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Diffstat (limited to 'doc')
184 files changed, 23563 insertions, 0 deletions
diff --git a/doc/Makefile.am b/doc/Makefile.am new file mode 100644 index 00000000..4a300e15 --- /dev/null +++ b/doc/Makefile.am @@ -0,0 +1,22 @@ +# +# Copyright (c) 2005, 2006 Thorsten Kukuk <kukuk@suse.de> +# + +SUBDIRS = man specs sag adg mwg + +CLEANFILES = *~ + +dist_html_DATA = index.html + +####################################################### + +releasedocs: all + $(mkinstalldirs) $(top_builddir)/Linux-PAM-$(VERSION)/doc/specs + cp -av specs/draft-morgan-pam-current.txt \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/specs/ + cp -av $(srcdir)/specs/rfc86.0.txt \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/specs/ + make -C sag releasedocs + make -C adg releasedocs + make -C mwg releasedocs + diff --git a/doc/Makefile.in b/doc/Makefile.in new file mode 100644 index 00000000..2949d469 --- /dev/null +++ b/doc/Makefile.in @@ -0,0 +1,591 @@ +# Makefile.in generated by automake 1.10.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. +# This Makefile.in is free software; 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April 2008</releaseinfo> + <abstract> + <para> + This manual documents what an application developer needs to know + about the <emphasis remap='B'>Linux-PAM</emphasis> library. It + describes how an application might use the + <emphasis remap='B'>Linux-PAM</emphasis> library to authenticate + users. In addition it contains a description of the funtions + to be found in <filename>libpam_misc</filename> library, that can + be used in general applications. Finally, it contains some comments + on PAM related security issues for the application developer. + </para> + </abstract> + </bookinfo> + + <chapter id="adg-introduction"> + <title>Introduction</title> + <section id="adg-introduction-description"> + <title>Description</title> + <para> + <emphasis remap='B'>Linux-PAM</emphasis> + (Pluggable Authentication Modules for Linux) is a library that enables + the local system administrator to choose how individual applications + authenticate users. For an overview of the + <emphasis remap='B'>Linux-PAM</emphasis> library see the + <emphasis>Linux-PAM System Administrators' Guide</emphasis>. + </para> + <para> + It is the purpose of the <emphasis remap='B'>Linux-PAM</emphasis> + project to liberate the development of privilege granting software + from the development of secure and appropriate authentication schemes. + This is accomplished by providing a documented library of functions + that an application may use for all forms of user authentication + management. This library dynamically loads locally configured + authentication modules that actually perform the authentication tasks. + </para> + <para> + From the perspective of an application developer the information + contained in the local configuration of the PAM library should not be + important. Indeed it is intended that an application treat the + functions documented here as a 'black box' that will deal with all + aspects of user authentication. 'All aspects' includes user + verification, account management, session initialization/termination + and also the resetting of passwords + (<emphasis>authentication tokens</emphasis>). + </para> + </section> + + <section id="adg-introduction-synopsis"> + <title>Synopsis</title> + <para> + For general applications that wish to use the services provided by + <emphasis remap='B'>Linux-PAM</emphasis> the following is a summary + of the relevant linking information: + <programlisting> +#include <security/pam_appl.h> + +cc -o application .... -lpam + </programlisting> + </para> + <para> + In addition to <command>libpam</command>, there is a library of + miscellaneous functions that make the job of writing + <emphasis>PAM-aware</emphasis> applications easier (this library is not + covered in the DCE-RFC for PAM and is specific to the Linux-PAM + distribution): + <programlisting> +#include <security/pam_appl.h> +#include <security/pam_misc.h> + +cc -o application .... -lpam -lpam_misc + </programlisting> + </para> + </section> + </chapter> + + <chapter id="adg-overview"> + <title>Overview</title> + <para> + Most service-giving applications are restricted. In other words, + their service is not available to all and every prospective client. + Instead, the applying client must jump through a number of hoops to + convince the serving application that they are authorized to obtain + service. + </para> + <para> + The process of <emphasis>authenticating</emphasis> a client is what + PAM is designed to manage. In addition to authentication, PAM provides + account management, credential management, session management and + authentication-token (password changing) management services. It is + important to realize when writing a PAM based application that these + services are provided in a manner that is + <emphasis remap='B'>transparent</emphasis> to the application. That is + to say, when the application is written, no assumptions can be made + about <emphasis>how</emphasis> the client will be authenticated. + </para> + <para> + The process of authentication is performed by the PAM library via a + call to <function>pam_authenticate()</function>. The return value + of this function will indicate whether a named client (the + <emphasis>user</emphasis>) has been authenticated. If the PAM library + needs to prompt the user for any information, such as their + <emphasis>name</emphasis> or a <emphasis>password</emphasis> + then it will do so. If the PAM library is configured to authenticate + the user using some silent protocol, it will do this too. (This + latter case might be via some hardware interface for example.) + </para> + <para> + It is important to note that the application must leave all decisions + about when to prompt the user at the discretion of the PAM library. + </para> + <para> + The PAM library, however, must work equally well for different styles + of application. Some applications, like the familiar + <command>login</command> and <command>passwd</command> are terminal + based applications, exchanges of information with the client in + these cases is as plain text messages. Graphically based applications, + however, have a more sophisticated interface. They generally interact + with the user via specially constructed dialogue boxes. Additionally, + network based services require that text messages exchanged with the + client are specially formatted for automated processing: one such + example is <command>ftpd</command> which prefixes each exchanged + message with a numeric identifier. + </para> + <para> + The presentation of simple requests to a client is thus something very + dependent on the protocol that the serving application will use. In + spite of the fact that PAM demands that it drives the whole + authentication process, it is not possible to leave such protocol + subtleties up to the PAM library. To overcome this potential problem, + the application provides the PAM library with a + <emphasis>conversation</emphasis> function. This function is called + from <emphasis>within</emphasis> the PAM library and enables the PAM + to directly interact with the client. The sorts of things that this + conversation function must be able to do are prompt the user with + text and/or obtain textual input from the user for processing by the + PAM library. The details of this function are provided in a later + section. + </para> + <para> + For example, the conversation function may be called by the PAM + library with a request to prompt the user for a password. Its job is + to reformat the prompt request into a form that the client will + understand. In the case of <command>ftpd</command>, this might involve + prefixing the string with the number <command>331</command> and sending + the request over the network to a connected client. The conversation + function will then obtain any reply and, after extracting the typed + password, will return this string of text to the PAM library. Similar + concerns need to be addressed in the case of an X-based graphical + server. + </para> + <para> + There are a number of issues that need to be addressed when one is + porting an existing application to become PAM compliant. A section + below has been devoted to this: Porting legacy applications. + </para> + <para> + Besides authentication, PAM provides other forms of management. + Session management is provided with calls to + <function>pam_open_session()</function> and + <function>pam_close_session()</function>. What these functions + actually do is up to the local administrator. But typically, they + could be used to log entry and exit from the system or for mounting + and unmounting the user's home directory. If an application provides + continuous service for a period of time, it should probably call + these functions, first open after the user is authenticated and then + close when the service is terminated. + </para> + <para> + Account management is another area that an application developer + should include with a call to <function>pam_acct_mgmt()</function>. + This call will perform checks on the good health of the user's account + (has it expired etc.). One of the things this function may check is + whether the user's authentication token has expired - in such a case the + application may choose to attempt to update it with a call to + <function>pam_chauthtok()</function>, although some applications + are not suited to this task (<command>ftp</command> for example) + and in this case the application should deny access to the user. + </para> + <para> + PAM is also capable of setting and deleting the users credentials with + the call <function>pam_setcred()</function>. This function should + always be called after the user is authenticated and before service + is offered to the user. By convention, this should be the last call + to the PAM library before the PAM session is opened. What exactly a + credential is, is not well defined. However, some examples are given + in the glossary below. + </para> + </chapter> + + <chapter id="adg-interface"> + <title> + The public interface to <emphasis remap='B'>Linux-PAM</emphasis> + </title> + <para> + Firstly, the relevant include file for the + <emphasis remap='B'>Linux-PAM</emphasis> library is + <function><security/pam_appl.h></function>. + It contains the definitions for a number of functions. After + listing these functions, we collect some guiding remarks for + programmers. + </para> + <section id="adg-interface-by-app-expected"> + <title>What can be expected by the application</title> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_start.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_end.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_set_item.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_get_item.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_strerror.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_fail_delay.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_authenticate.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_setcred.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_acct_mgmt.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_chauthtok.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_open_session.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_close_session.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_putenv.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_getenv.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_getenvlist.xml"/> + </section> + <section id="adg-interface-of-app-expected"> + <title>What is expected of an application</title> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_conv.xml"/> + </section> + <section id="adg-interface-programming-notes"> + <title>Programming notes</title> + <para> + Note, all of the authentication service function calls accept the + token <emphasis remap='B'>PAM_SILENT</emphasis>, which instructs + the modules to not send messages to the application. This token + can be logically OR'd with any one of the permitted tokens specific + to the individual function calls. + <emphasis remap='B'>PAM_SILENT</emphasis> does not override the + prompting of the user for passwords etc., it only stops informative + messages from being generated. + </para> + </section> + </chapter> + + <chapter id="adg-security"> + <title> + Security issues of <emphasis remap='B'>Linux-PAM</emphasis> + </title> + <para> + PAM, from the perspective of an application, is a convenient API for + authenticating users. PAM modules generally have no increased + privilege over that possessed by the application that is making use of + it. For this reason, the application must take ultimate responsibility + for protecting the environment in which PAM operates. + </para> + <para> + A poorly (or maliciously) written application can defeat any + <emphasis remap='B'>Linux-PAM</emphasis> module's authentication + mechanisms by simply ignoring it's return values. It is the + applications task and responsibility to grant privileges and access + to services. The <emphasis remap='B'>Linux-PAM</emphasis> library + simply assumes the responsibility of <emphasis>authenticating</emphasis> + the user; ascertaining that the user <emphasis>is</emphasis> who they + say they are. Care should be taken to anticipate all of the documented + behavior of the <emphasis remap='B'>Linux-PAM</emphasis> library + functions. A failure to do this will most certainly lead to a future + security breach. + </para> + + <section id="adg-security-library-calls"> + <title>Care about standard library calls</title> + <para> + In general, writers of authorization-granting applications should + assume that each module is likely to call any or + <emphasis>all</emphasis> 'libc' functions. For 'libc' functions + that return pointers to static/dynamically allocated structures + (ie. the library allocates the memory and the user is not expected + to '<function>free()</function>' it) any module call to this + function is likely to corrupt a pointer previously + obtained by the application. The application programmer should + either re-call such a 'libc' function after a call to the + <emphasis remap='B'>Linux-PAM</emphasis> library, or copy the + structure contents to some safe area of memory before passing + control to the <emphasis remap='B'>Linux-PAM</emphasis> library. + </para> + <para> + Two important function classes that fall into this category are + <citerefentry> + <refentrytitle>getpwnam</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> and <citerefentry> + <refentrytitle>syslog</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>. + </para> + </section> + + <section id="adg-security-service-name"> + <title>Choice of a service name</title> + <para> + When picking the <emphasis>service-name</emphasis> that + corresponds to the first entry in the + <emphasis remap='B'>Linux-PAM</emphasis> configuration file, + the application programmer should <emphasis>avoid</emphasis> + the temptation of choosing something related to + <varname>argv[0]</varname>. It is a trivial matter for any user + to invoke any application on a system under a different name and + this should not be permitted to cause a security breach. + </para> + <para> + In general, this is always the right advice if the program is + setuid, or otherwise more privileged than the user that invokes + it. In some cases, avoiding this advice is convenient, but as an + author of such an application, you should consider well the ways + in which your program will be installed and used. (Its often the + case that programs are not intended to be setuid, but end up + being installed that way for convenience. If your program falls + into this category, don't fall into the trap of making this mistake.) + </para> + <para> + To invoke some <emphasis>target</emphasis> application by + another name, the user may symbolically link the target application + with the desired name. To be precise all the user need do is, + <command>ln -s /target/application ./preferred_name</command> + and then run <command>./preferred_name</command>. + </para> + <para> + By studying the <emphasis remap='B'>Linux-PAM</emphasis> + configuration file(s), an attacker can choose the + <command>preferred_name</command> to be that of a service enjoying + minimal protection; for example a game which uses + <emphasis remap='B'>Linux-PAM</emphasis> to restrict access to + certain hours of the day. If the service-name were to be linked + to the filename under which the service was invoked, it + is clear that the user is effectively in the position of + dictating which authentication scheme the service uses. Needless + to say, this is not a secure situation. + </para> + <para> + The conclusion is that the application developer should carefully + define the service-name of an application. The safest thing is to + make it a single hard-wired name. + </para> + </section> + + <section id="adg-security-conv-function"> + <title>The conversation function</title> + <para> + Care should be taken to ensure that the <function>conv()</function> + function is robust. Such a function is provided in the library + <command>libpam_misc</command> (see + <link linkend="adg-libpam-functions">below</link>). + </para> + </section> + + <section id="adg-security-usre-identity"> + <title>The identity of the user</title> + <para> + The <emphasis remap='B'>Linux-PAM</emphasis> modules will need + to determine the identity of the user who requests a service, + and the identity of the user who grants the service. These two + users will seldom be the same. Indeed there is generally a third + user identity to be considered, the new (assumed) identity of + the user once the service is granted. + </para> + <para> + The need for keeping tabs on these identities is clearly an + issue of security. One convention that is actively used by + some modules is that the identity of the user requesting a + service should be the current <emphasis>UID</emphasis> + (userid) of the running process; the identity of the + privilege granting user is the <emphasis>EUID</emphasis> + (effective userid) of the running process; the identity of + the user, under whose name the service will be executed, is + given by the contents of the <emphasis>PAM_USER</emphasis> + <citerefentry> + <refentrytitle>pam_get_item</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>. Note, modules can change the values of + <emphasis>PAM_USER</emphasis> and <emphasis>PAM_RUSER</emphasis> + during any of the <function>pam_*()</function> library calls. + For this reason, the application should take care to use the + <function>pam_get_item()</function> every time it wishes to + establish who the authenticated user is (or will currently be). + </para> + <para> + For network-serving databases and other applications that provide + their own security model (independent of the OS kernel) the above + scheme is insufficient to identify the requesting user. + </para> + <para> + A more portable solution to storing the identity of the requesting + user is to use the <emphasis>PAM_RUSER</emphasis> <citerefentry> + <refentrytitle>pam_get_item</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>. The application should supply this value before + attempting to authenticate the user with + <function>pam_authenticate()</function>. How well this name can be + trusted will ultimately be at the discretion of the local + administrator (who configures PAM for your application) and a + selected module may attempt to override the value where it can + obtain more reliable data. If an application is unable to determine + the identity of the requesting entity/user, it should not call + <citerefentry> + <refentrytitle>pam_set_item</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> to set <emphasis>PAM_RUSER</emphasis>. + </para> + <para> + In addition to the <emphasis>PAM_RUSER</emphasis> item, the + application should supply the <emphasis>PAM_RHOST</emphasis> + (<emphasis>requesting host</emphasis>) item. As a general rule, + the following convention for its value can be assumed: + NULL = unknown; localhost = invoked directly from the local system; + <emphasis>other.place.xyz</emphasis> = some component of the + user's connection originates from this remote/requesting host. At + present, PAM has no established convention for indicating whether + the application supports a trusted path to communication from + this host. + </para> + </section> + + <section id="adg-security-resources"> + <title>Sufficient resources</title> + <para> + Care should be taken to ensure that the proper execution of an + application is not compromised by a lack of system resources. If an + application is unable to open sufficient files to perform its service, + it should fail gracefully, or request additional resources. + Specifically, the quantities manipulated by the <citerefentry> + <refentrytitle>setrlimit</refentrytitle><manvolnum>2</manvolnum> + </citerefentry> family of commands should be taken into consideration. + </para> + <para> + This is also true of conversation prompts. The application should not + accept prompts of arbitrary length with out checking for resource + allocation failure and dealing with such extreme conditions gracefully + and in a mannor that preserves the PAM API. Such tolerance may be + especially important when attempting to track a malicious adversary. + </para> + </section> + </chapter> + + <chapter id='adg-libpam_misc'> + <title>A library of miscellaneous helper functions</title> + <para> + To aid the work of the application developer a library of + miscellaneous functions is provided. It is called + <command>libpam_miscy</command>, and contains a text based + conversation function, and routines for enhancing the standard + PAM-environment variable support. + </para> + <para> + The functions, structures and macros, made available by this + library can be defined by including + <function><security/pam_misc.h></function>. It should be + noted that this library is specific to + <emphasis remap='B'>Linux-PAM</emphasis> and is not referred to in + the defining DCE-RFC (see <link linkend="adg-see-also">See also</link>) + below. + </para> + <section id='adg-libpam-functions'> + <title>Functions supplied</title> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_misc_conv.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_misc_paste_env.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_misc_drop_env.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_misc_setenv.xml"/> + </section> + </chapter> + + <chapter id='adg-porting'> + <title>Porting legacy applications</title> + <para> + The point of PAM is that the application is not supposed to + have any idea how the attached authentication modules will choose + to authenticate the user. So all they can do is provide a conversation + function that will talk directly to the user(client) on the modules' + behalf. + </para> + <para> + Consider the case that you plug a retinal scanner into the login + program. In this situation the user would be prompted: "please look + into the scanner". No username or password would be needed - all this + information could be deduced from the scan and a database lookup. The + point is that the retinal scanner is an ideal task for a "module". + </para> + <para> + While it is true that a pop-daemon program is designed with the POP + protocol in mind and no-one ever considered attaching a retinal + scanner to it, it is also the case that the "clean" PAM'ification of + such a daemon would allow for the possibility of a scanner module + being be attached to it. The point being that the "standard" + pop-authentication protocol(s) [which will be needed to satisfy + inflexible/legacy clients] would be supported by inserting an + appropriate pam_qpopper module(s). However, having rewritten popd + once in this way any new protocols can be implemented in-situ. + </para> + <para> + One simple test of a ported application would be to insert the + <command>pam_permit</command> module and see if the application + demands you type a password... In such a case, <command>xlock</command> + would fail to lock the terminal - or would at best be a screen-saver, + ftp would give password free access to all etc.. Neither of + these is a very secure thing to do, but they do illustrate how + much flexibility PAM puts in the hands of the local admin. + </para> + <para> + The key issue, in doing things correctly, is identifying what is part + of the authentication procedure (how many passwords etc..) the + exchange protocol (prefixes to prompts etc., numbers like 331 in the + case of ftpd) and what is part of the service that the application + delivers. PAM really needs to have total control in the + authentication "procedure", the conversation function should only + deal with reformatting user prompts and extracting responses from raw + input. + </para> + </chapter> + + <chapter id='adg-glossary'> + <title>Glossary of PAM related terms</title> + <para> + The following are a list of terms used within this document. + </para> + <variablelist> + <varlistentry> + <term>Authentication token</term> + <listitem> + <para> + Generally, this is a password. However, a user can authenticate + him/herself in a variety of ways. Updating the user's + authentication token thus corresponds to + <emphasis>refreshing</emphasis> the object they use to + authenticate themself with the system. The word password is + avoided to keep open the possibility that the authentication + involves a retinal scan or other non-textual mode of + challenge/response. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>Credentials</term> + <listitem> + <para> + Having successfully authenticated the user, PAM is able to + establish certain characteristics/attributes of the user. + These are termed <emphasis>credentials</emphasis>. Examples + of which are group memberships to perform privileged tasks + with, and <emphasis>tickets</emphasis> in the form of + environment variables etc. . Some user-credentials, such as + the user's UID and GID (plus default group memberships) are + not deemed to be PAM-credentials. It is the responsibility + of the application to grant these directly. + </para> + </listitem> + </varlistentry> + </variablelist> + </chapter> + + <chapter id='adg-example'> + <title>An example application</title> + <para> + To get a flavor of the way a <emphasis remap='B'>Linux-PAM</emphasis> + application is written we include the following example. It prompts + the user for their password and indicates whether their account + is valid on the standard output, its return code also indicates + the success (<returnvalue>0</returnvalue> for success; + <returnvalue>1</returnvalue> for failure). + </para> + <programlisting><![CDATA[ +/* + This program was contributed by Shane Watts + [modifications by AGM and kukuk] + + You need to add the following (or equivalent) to the + /etc/pam.d/check_user file: + # check authorization + auth required pam_unix.so + account required pam_unix.so + */ + +#include <security/pam_appl.h> +#include <security/pam_misc.h> +#include <stdio.h> + +static struct pam_conv conv = { + misc_conv, + NULL +}; + +int main(int argc, char *argv[]) +{ + pam_handle_t *pamh=NULL; + int retval; + const char *user="nobody"; + + if(argc == 2) { + user = argv[1]; + } + + if(argc > 2) { + fprintf(stderr, "Usage: check_user [username]\n"); + exit(1); + } + + retval = pam_start("check_user", user, &conv, &pamh); + + if (retval == PAM_SUCCESS) + retval = pam_authenticate(pamh, 0); /* is user really user? */ + + if (retval == PAM_SUCCESS) + retval = pam_acct_mgmt(pamh, 0); /* permitted access? */ + + /* This is where we have been authorized or not. */ + + if (retval == PAM_SUCCESS) { + fprintf(stdout, "Authenticated\n"); + } else { + fprintf(stdout, "Not Authenticated\n"); + } + + if (pam_end(pamh,retval) != PAM_SUCCESS) { /* close Linux-PAM */ + pamh = NULL; + fprintf(stderr, "check_user: failed to release authenticator\n"); + exit(1); + } + + return ( retval == PAM_SUCCESS ? 0:1 ); /* indicate success */ +} +]]> + </programlisting> + </chapter> + + <chapter id='adg-files'> + <title>Files</title> + <variablelist> + <varlistentry> + <term><filename>/usr/include/security/pam_appl.h</filename></term> + <listitem> + <para> + Header file with interfaces for + <emphasis remap='B'>Linux-PAM</emphasis> applications. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term><filename>/usr/include/security/pam_misc.h</filename></term> + <listitem> + <para> + Header file for useful library functions for making + applications easier to write. + </para> + </listitem> + </varlistentry> + </variablelist> + </chapter> + + <chapter id="adg-see-also"> + <title>See also</title> + <itemizedlist> + <listitem> + <para> + The Linux-PAM System Administrators' Guide. + </para> + </listitem> + <listitem> + <para> + The Linux-PAM Module Writers' Guide. + </para> + </listitem> + <listitem> + <para> + The V. Samar and R. Schemers (SunSoft), ``UNIFIED LOGIN WITH + PLUGGABLE AUTHENTICATION MODULES'', Open Software Foundation + Request For Comments 86.0, October 1995. + </para> + </listitem> + </itemizedlist> + </chapter> + + <chapter id='adg-author'> + <title>Author/acknowledgments</title> + <para> + This document was written by Andrew G. Morgan (morgan@kernel.org) + with many contributions from + Chris Adams, Peter Allgeyer, Tim Baverstock, Tim Berger, Craig S. Bell, + Derrick J. Brashear, Ben Buxton, Seth Chaiklin, Oliver Crow, Chris Dent, + Marc Ewing, Cristian Gafton, Emmanuel Galanos, Brad M. Garcia, + Eric Hester, Roger Hu, Eric Jacksch, Michael K. Johnson, David Kinchlea, + Olaf Kirch, Marcin Korzonek, Thorsten Kukuk, Stephen Langasek, + Nicolai Langfeldt, Elliot Lee, Luke Kenneth Casson Leighton, + Al Longyear, Ingo Luetkebohle, Marek Michalkiewicz, Robert Milkowski, + Aleph One, Martin Pool, Sean Reifschneider, Jan Rekorajski, Erik Troan, + Theodore Ts'o, Jeff Uphoff, Myles Uyema, Savochkin Andrey Vladimirovich, + Ronald Wahl, David Wood, John Wilmes, Joseph S. D. Yao + and Alex O. Yuriev. + </para> + <para> + Thanks are also due to Sun Microsystems, especially to Vipin Samar and + Charlie Lai for their advice. At an early stage in the development of + <emphasis remap='B'>Linux-PAM</emphasis>, Sun graciously made the + documentation for their implementation of PAM available. This act + greatly accelerated the development of + <emphasis remap='B'>Linux-PAM</emphasis>. + </para> + </chapter> + + <chapter id='adg-copyright'> + <title>Copyright information for this document</title> + <programlisting> +Copyright (c) 2006 Thorsten Kukuk <kukuk@thkukuk.de> +Copyright (c) 1996-2002 Andrew G. Morgan <morgan@kernel.org> + </programlisting> + <para> + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are + met: + </para> + <programlisting> +1. Redistributions of source code must retain the above copyright + notice, and the entire permission notice in its entirety, + including the disclaimer of warranties. + +2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + +3. The name of the author may not be used to endorse or promote + products derived from this software without specific prior + written permission. + </programlisting> + <para> + Alternatively, this product may be distributed under the terms of + the GNU General Public License (GPL), in which case the provisions + of the GNU GPL are required instead of the above restrictions. + (This clause is necessary due to a potential bad interaction between + the GNU GPL and the restrictions contained in a BSD-style copyright.) + </para> + <programlisting> +THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED +WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF +MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, +BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS +OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND +ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR +TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE +USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH + </programlisting> + </chapter> +</book> diff --git a/doc/adg/Makefile.am b/doc/adg/Makefile.am new file mode 100644 index 00000000..03d0c871 --- /dev/null +++ b/doc/adg/Makefile.am @@ -0,0 +1,97 @@ +# +# Copyright (c) 2006 Thorsten Kukuk <kukuk@thkukuk.de> +# + +CLEANFILES = Linux-PAM_ADG.fo *~ + +EXTRA_DIST = $(XMLS) + +XMLS = Linux-PAM_ADG.xml $(shell ls $(srcdir)/pam_*.xml) +DEP_XMLS = $(shell ls $(top_srcdir)/doc/man/pam_*.xml) + +if ENABLE_REGENERATE_MAN +MAINTAINERCLEANFILES = Linux-PAM_ADG.txt Linux-PAM_ADG.pdf html/*.html + +all: Linux-PAM_ADG.txt html/Linux-PAM_ADG.html Linux-PAM_ADG.pdf + +Linux-PAM_ADG.pdf: $(XMLS) $(DEP_XMLS) +if ENABLE_GENERATE_PDF + $(XMLLINT) --nonet --xinclude --postvalid --noent --noout $< + $(XSLTPROC) --stringparam generate.toc "book toc" \ + --stringparam section.autolabel 1 \ + --stringparam section.label.includes.component.label 1 \ + --stringparam toc.max.depth 3 --xinclude --nonet \ + http://docbook.sourceforge.net/release/xsl/current/fo/docbook.xsl $< > Linux-PAM_ADG.fo + $(FO2PDF) Linux-PAM_ADG.fo $@ +else + echo "No fo2pdf processor installed, skip PDF generation" +endif + +Linux-PAM_ADG.txt: $(XMLS) $(DEP_XMLS) + $(XMLLINT) --nonet --xinclude --postvalid --noent --noout $< + $(XSLTPROC) --stringparam generate.toc "book toc" \ + --stringparam section.autolabel 1 \ + --stringparam section.label.includes.component.label 1 \ + --stringparam toc.max.depth 3 --xinclude --nonet \ + http://docbook.sourceforge.net/release/xsl/current/html/docbook.xsl $< | $(BROWSER) > $@ + +html/Linux-PAM_ADG.html: $(XMLS) $(DEP_XMLS) + @test -d html || mkdir -p html + $(XMLLINT) --nonet --xinclude --postvalid --noent --noout $< + $(XSLTPROC) --stringparam base.dir html/ \ + --stringparam root.filename Linux-PAM_ADG \ + --stringparam use.id.as.filename 1 \ + --stringparam chunk.first.sections 1 \ + --stringparam section.autolabel 1 \ + --stringparam section.label.includes.component.label 1 \ + --stringparam toc.max.depth 3 --xinclude --nonet \ + http://docbook.sourceforge.net/release/xsl/current/html/chunk.xsl $< + +distclean-local: + -rm -rf html Linux-PAM_ADG.txt Linux-PAM_ADG.pdf + +endif + +install-data-local: + $(mkinstalldirs) $(DESTDIR)$(docdir) + $(mkinstalldirs) $(DESTDIR)$(pdfdir) + $(mkinstalldirs) $(DESTDIR)$(htmldir) + test -f html/Linux-PAM_ADG.html || exit 0; \ + $(install_sh_DATA) html/Linux-PAM_ADG.html html/adg-*.html \ + $(DESTDIR)$(htmldir)/ || \ + $(install_sh_DATA) $(srcdir)/html/Linux-PAM_ADG.html \ + $(srcdir)/html/sag-*.html \ + $(DESTDIR)$(htmldir)/ + test -f Linux-PAM_ADG.txt || exit 0; \ + $(install_sh_DATA) Linux-PAM_ADG.txt $(DESTDIR)$(docdir)/ || \ + $(install_sh_DATA) $(srcdir)/Linux-PAM_ADG.txt \ + $(DESTDIR)$(docdir)/ + test -f 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+@ENABLE_REGENERATE_MAN_TRUE@ --stringparam toc.max.depth 3 --xinclude --nonet \ +@ENABLE_REGENERATE_MAN_TRUE@ http://docbook.sourceforge.net/release/xsl/current/html/docbook.xsl $< | $(BROWSER) > $@ + +@ENABLE_REGENERATE_MAN_TRUE@html/Linux-PAM_ADG.html: $(XMLS) $(DEP_XMLS) +@ENABLE_REGENERATE_MAN_TRUE@ @test -d html || mkdir -p html +@ENABLE_REGENERATE_MAN_TRUE@ $(XMLLINT) --nonet --xinclude --postvalid --noent --noout $< +@ENABLE_REGENERATE_MAN_TRUE@ $(XSLTPROC) --stringparam base.dir html/ \ +@ENABLE_REGENERATE_MAN_TRUE@ --stringparam root.filename Linux-PAM_ADG \ +@ENABLE_REGENERATE_MAN_TRUE@ --stringparam use.id.as.filename 1 \ +@ENABLE_REGENERATE_MAN_TRUE@ --stringparam chunk.first.sections 1 \ +@ENABLE_REGENERATE_MAN_TRUE@ --stringparam section.autolabel 1 \ +@ENABLE_REGENERATE_MAN_TRUE@ --stringparam section.label.includes.component.label 1 \ +@ENABLE_REGENERATE_MAN_TRUE@ --stringparam toc.max.depth 3 --xinclude --nonet \ +@ENABLE_REGENERATE_MAN_TRUE@ http://docbook.sourceforge.net/release/xsl/current/html/chunk.xsl $< + +@ENABLE_REGENERATE_MAN_TRUE@distclean-local: +@ENABLE_REGENERATE_MAN_TRUE@ -rm -rf html Linux-PAM_ADG.txt Linux-PAM_ADG.pdf + +install-data-local: + $(mkinstalldirs) $(DESTDIR)$(docdir) + $(mkinstalldirs) $(DESTDIR)$(pdfdir) + $(mkinstalldirs) $(DESTDIR)$(htmldir) + test -f html/Linux-PAM_ADG.html || exit 0; \ + $(install_sh_DATA) html/Linux-PAM_ADG.html html/adg-*.html \ + $(DESTDIR)$(htmldir)/ || \ + $(install_sh_DATA) $(srcdir)/html/Linux-PAM_ADG.html \ + $(srcdir)/html/sag-*.html \ + $(DESTDIR)$(htmldir)/ + test -f Linux-PAM_ADG.txt || exit 0; \ + $(install_sh_DATA) Linux-PAM_ADG.txt $(DESTDIR)$(docdir)/ || \ + $(install_sh_DATA) $(srcdir)/Linux-PAM_ADG.txt \ + $(DESTDIR)$(docdir)/ + test -f Linux-PAM_ADG.pdf || exit 0; \ + $(install_sh_DATA) Linux-PAM_ADG.pdf $(DESTDIR)$(pdfdir)/ || \ + $(install_sh_DATA) $(srcdir)/Linux-PAM_ADG.pdf \ + $(DESTDIR)$(pdfdir)/ + +uninstall-local: + -rm $(DESTDIR)$(htmldir)/Linux-PAM_ADG.html + -rm $(DESTDIR)$(htmldir)/adg-*.html + -rm $(DESTDIR)$(docdir)/Linux-PAM_ADG.txt + -rm $(DESTDIR)$(pdfdir)/Linux-PAM_ADG.pdf + +releasedocs: all + $(mkinstalldirs) $(top_builddir)/Linux-PAM-$(VERSION)/doc/adg/html + test -f html/Linux-PAM_ADG.html || exit 0; \ + cp -ap html/Linux-PAM_ADG.html html/adg-*.html \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/adg/html/ || \ + cp -ap $(srcdir)/html/Linux-PAM_ADG.html \ + $(srcdir)/html/adg-*.html \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/adg/html/ + test -f Linux-PAM_ADG.txt || exit 0; \ + cp -p Linux-PAM_ADG.txt \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/adg/ || \ + cp -p $(srcdir)/Linux-PAM_ADG.txt \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/adg/ + test -f Linux-PAM_ADG.pdf || exit 0; \ + cp -p Linux-PAM_ADG.pdf \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/adg/ || \ + cp -p $(srcdir)/Linux-PAM_ADG.pdf \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/adg/ +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/doc/adg/pam_acct_mgmt.xml b/doc/adg/pam_acct_mgmt.xml new file mode 100644 index 00000000..6a3a37d2 --- /dev/null +++ b/doc/adg/pam_acct_mgmt.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='adg-pam_acct_mgmt'> + <title>Account validation management</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_acct_mgmt.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_acct_mgmt-synopsis"]/*)'/> + </funcsynopsis> + <section id='adg-pam_acct_mgmt-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_acct_mgmt.3.xml" xpointer='xpointer(//refsect1[@id = "pam_acct_mgmt-description"]/*)'/> + </section> + <section id='adg-pam_acct_mgmt-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_acct_mgmt.3.xml" xpointer='xpointer(//refsect1[@id = "pam_acct_mgmt-return_values"]/*)'/> + </section> +</section> diff --git a/doc/adg/pam_authenticate.xml b/doc/adg/pam_authenticate.xml new file mode 100644 index 00000000..2ca9b540 --- /dev/null +++ b/doc/adg/pam_authenticate.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='adg-pam_authenticate'> + <title>Authenticating the user</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_authenticate.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_authenticate-synopsis"]/*)'/> + </funcsynopsis> + <section id='adg-pam_authenticate-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_authenticate.3.xml" xpointer='xpointer(//refsect1[@id = "pam_authenticate-description"]/*)'/> + </section> + <section id='adg-pam_authenticate-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_authenticate.3.xml" xpointer='xpointer(//refsect1[@id = "pam_authenticate-return_values"]/*)'/> + </section> +</section> diff --git a/doc/adg/pam_chauthtok.xml b/doc/adg/pam_chauthtok.xml new file mode 100644 index 00000000..1c613da7 --- /dev/null +++ b/doc/adg/pam_chauthtok.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='adg-pam_chauthtok'> + <title>Updating authentication tokens</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_chauthtok.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_chauthtok-synopsis"]/*)'/> + </funcsynopsis> + <section id='adg-pam_chauthtok-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_chauthtok.3.xml" xpointer='xpointer(//refsect1[@id = "pam_chauthtok-description"]/*)'/> + </section> + <section id='adg-pam_chauthtok-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_chauthtok.3.xml" xpointer='xpointer(//refsect1[@id = "pam_chauthtok-return_values"]/*)'/> + </section> +</section> diff --git a/doc/adg/pam_close_session.xml b/doc/adg/pam_close_session.xml new file mode 100644 index 00000000..4b93fc3a --- /dev/null +++ b/doc/adg/pam_close_session.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='adg-pam_close_session'> + <title>terminating PAM session management</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_close_session.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_close_session-synopsis"]/*)'/> + </funcsynopsis> + <section id='adg-pam_close_session-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_close_session.3.xml" xpointer='xpointer(//refsect1[@id = "pam_close_session-description"]/*)'/> + </section> + <section id='adg-pam_close_session-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_close_session.3.xml" xpointer='xpointer(//refsect1[@id = "pam_close_session-return_values"]/*)'/> + </section> +</section> diff --git a/doc/adg/pam_conv.xml b/doc/adg/pam_conv.xml new file mode 100644 index 00000000..01b75127 --- /dev/null +++ b/doc/adg/pam_conv.xml @@ -0,0 +1,35 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='adg-pam_conv'> + <title>The conversation function</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_conv.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_conv-synopsis"]/*)'/> + </funcsynopsis> + <programlisting> +struct pam_message { + int msg_style; + const char *msg; +}; + +struct pam_response { + char *resp; + int resp_retcode; +}; + +struct pam_conv { + int (*conv)(int num_msg, const struct pam_message **msg, + struct pam_response **resp, void *appdata_ptr); + void *appdata_ptr; +}; + </programlisting> + <section id='adg-pam_conv-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_conv.3.xml" xpointer='xpointer(//refsect1[@id = "pam_conv-description"]/*)'/> + </section> + <section id='adg-pam_conv-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_conv.3.xml" xpointer='xpointer(//refsect1[@id = "pam_conv-return_values"]/*)'/> + </section> +</section> diff --git a/doc/adg/pam_end.xml b/doc/adg/pam_end.xml new file mode 100644 index 00000000..efa328be --- /dev/null +++ b/doc/adg/pam_end.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='adg-pam_end'> + <title>Termination of PAM transaction</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_end.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_end-synopsis"]/*)'/> + </funcsynopsis> + <section id='adg-pam_end-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_end.3.xml" xpointer='xpointer(//refsect1[@id = "pam_end-description"]/*)'/> + </section> + <section id='adg-pam_end-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_end.3.xml" xpointer='xpointer(//refsect1[@id = "pam_end-return_values"]/*)'/> + </section> +</section> diff --git a/doc/adg/pam_fail_delay.xml b/doc/adg/pam_fail_delay.xml new file mode 100644 index 00000000..589e1148 --- /dev/null +++ b/doc/adg/pam_fail_delay.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='adg-pam_fail_delay'> + <title>Request a delay on failure</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_fail_delay.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_fail_delay-synopsis"]/*)'/> + </funcsynopsis> + <section id='adg-pam_fail_delay-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_fail_delay.3.xml" xpointer='xpointer(//refsect1[@id = "pam_fail_delay-description"]/*)'/> + </section> + <section id='adg-pam_fail_delay-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_fail_delay.3.xml" xpointer='xpointer(//refsect1[@id = "pam_fail_delay-return_values"]/*)'/> + </section> +</section> diff --git a/doc/adg/pam_get_item.xml b/doc/adg/pam_get_item.xml new file mode 100644 index 00000000..f23c734b --- /dev/null +++ b/doc/adg/pam_get_item.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='adg-pam_get_item'> + <title>Getting PAM items</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_get_item.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_get_item-synopsis"]/*)'/> + </funcsynopsis> + <section id='adg-pam_get_item-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_get_item.3.xml" xpointer='xpointer(//refsect1[@id = "pam_get_item-description"]/*)'/> + </section> + <section id='adg-pam_get_item-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_get_item.3.xml" xpointer='xpointer(//refsect1[@id = "pam_get_item-return_values"]/*)'/> + </section> +</section> diff --git a/doc/adg/pam_getenv.xml b/doc/adg/pam_getenv.xml new file mode 100644 index 00000000..61d69c33 --- /dev/null +++ b/doc/adg/pam_getenv.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='adg-pam_getenv'> + <title>Get a PAM environment variable</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_getenv.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_getenv-synopsis"]/*)'/> + </funcsynopsis> + <section id='adg-pam_getenv-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_getenv.3.xml" xpointer='xpointer(//refsect1[@id = "pam_getenv-description"]/*)'/> + </section> + <section id='adg-pam_getenv-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_getenv.3.xml" xpointer='xpointer(//refsect1[@id = "pam_getenv-return_values"]/*)'/> + </section> +</section> diff --git a/doc/adg/pam_getenvlist.xml b/doc/adg/pam_getenvlist.xml new file mode 100644 index 00000000..d3c2fcd3 --- /dev/null +++ b/doc/adg/pam_getenvlist.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='adg-pam_getenvlist'> + <title>Getting the PAM environment</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_getenvlist.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_getenvlist-synopsis"]/*)'/> + </funcsynopsis> + <section id='adg-pam_getenvlist-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_getenvlist.3.xml" xpointer='xpointer(//refsect1[@id = "pam_getenvlist-description"]/*)'/> + </section> + <section id='adg-pam_getenvlist-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_getenvlist.3.xml" xpointer='xpointer(//refsect1[@id = "pam_getenvlist-return_values"]/*)'/> + </section> +</section> diff --git a/doc/adg/pam_misc_conv.xml b/doc/adg/pam_misc_conv.xml new file mode 100644 index 00000000..2dc760cc --- /dev/null +++ b/doc/adg/pam_misc_conv.xml @@ -0,0 +1,14 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='adg-misc_conv'> + <title>Text based conversation function</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/misc_conv.3.xml" xpointer='xpointer(//funcsynopsis[@id = "misc_conv-synopsis"]/*)'/> + </funcsynopsis> + <section id='adg-misc_conv-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/misc_conv.3.xml" xpointer='xpointer(//refsect1[@id = "misc_conv-description"]/*)'/> + </section> +</section> diff --git a/doc/adg/pam_misc_drop_env.xml b/doc/adg/pam_misc_drop_env.xml new file mode 100644 index 00000000..956d4815 --- /dev/null +++ b/doc/adg/pam_misc_drop_env.xml @@ -0,0 +1,14 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='adg-pam_misc_drop_env'> + <title>Liberating a locally saved environment</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_misc_drop_env.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_misc_drop_env-synopsis"]/*)'/> + </funcsynopsis> + <section id='adg-pam_misc_drop_env-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_misc_drop_env.3.xml" xpointer='xpointer(//refsect1[@id = "pam_misc_drop_env-description"]/*)'/> + </section> +</section> diff --git a/doc/adg/pam_misc_paste_env.xml b/doc/adg/pam_misc_paste_env.xml new file mode 100644 index 00000000..c6d3856b --- /dev/null +++ b/doc/adg/pam_misc_paste_env.xml @@ -0,0 +1,14 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='adg-pam_misc_paste_env'> + <title>Transcribing an environment to that of PAM</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_misc_paste_env.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_misc_paste_env-synopsis"]/*)'/> + </funcsynopsis> + <section id='adg-pam_misc_paste_env-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_misc_paste_env.3.xml" xpointer='xpointer(//refsect1[@id = "pam_misc_paste_env-description"]/*)'/> + </section> +</section> diff --git a/doc/adg/pam_misc_setenv.xml b/doc/adg/pam_misc_setenv.xml new file mode 100644 index 00000000..3b1a32e4 --- /dev/null +++ b/doc/adg/pam_misc_setenv.xml @@ -0,0 +1,14 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='adg-pam_misc_setenv'> + <title>BSD like PAM environment variable setting</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_misc_setenv.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_misc_setenv-synopsis"]/*)'/> + </funcsynopsis> + <section id='adg-pam_misc_setenv-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_misc_setenv.3.xml" xpointer='xpointer(//refsect1[@id = "pam_misc_setenv-description"]/*)'/> + </section> +</section> diff --git a/doc/adg/pam_open_session.xml b/doc/adg/pam_open_session.xml new file mode 100644 index 00000000..ba738a55 --- /dev/null +++ b/doc/adg/pam_open_session.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='adg-pam_open_session'> + <title>Start PAM session management</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_open_session.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_open_session-synopsis"]/*)'/> + </funcsynopsis> + <section id='adg-pam_open_session-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_open_session.3.xml" xpointer='xpointer(//refsect1[@id = "pam_open_session-description"]/*)'/> + </section> + <section id='adg-pam_open_session-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_open_session.3.xml" xpointer='xpointer(//refsect1[@id = "pam_open_session-return_values"]/*)'/> + </section> +</section> diff --git a/doc/adg/pam_putenv.xml b/doc/adg/pam_putenv.xml new file mode 100644 index 00000000..e55f1a42 --- /dev/null +++ b/doc/adg/pam_putenv.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='adg-pam_putenv'> + <title>Set or change PAM environment variable</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_putenv.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_putenv-synopsis"]/*)'/> + </funcsynopsis> + <section id='adg-pam_putenv-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_putenv.3.xml" xpointer='xpointer(//refsect1[@id = "pam_putenv-description"]/*)'/> + </section> + <section id='adg-pam_putenv-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_putenv.3.xml" xpointer='xpointer(//refsect1[@id = "pam_putenv-return_values"]/*)'/> + </section> +</section> diff --git a/doc/adg/pam_set_item.xml b/doc/adg/pam_set_item.xml new file mode 100644 index 00000000..41169387 --- /dev/null +++ b/doc/adg/pam_set_item.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='adg-pam_set_item'> + <title>Setting PAM items</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_set_item.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_set_item-synopsis"]/*)'/> + </funcsynopsis> + <section id='adg-pam_set_item-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_set_item.3.xml" xpointer='xpointer(//refsect1[@id = "pam_set_item-description"]/*)'/> + </section> + <section id='adg-pam_set_item-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_set_item.3.xml" xpointer='xpointer(//refsect1[@id = "pam_set_item-return_values"]/*)'/> + </section> +</section> diff --git a/doc/adg/pam_setcred.xml b/doc/adg/pam_setcred.xml new file mode 100644 index 00000000..1d3d23cd --- /dev/null +++ b/doc/adg/pam_setcred.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='adg-pam_setcred'> + <title>Setting user credentials</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_setcred.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_setcred-synopsis"]/*)'/> + </funcsynopsis> + <section id='adg-pam_setcred-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_setcred.3.xml" xpointer='xpointer(//refsect1[@id = "pam_setcred-description"]/*)'/> + </section> + <section id='adg-pam_setcred-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_setcred.3.xml" xpointer='xpointer(//refsect1[@id = "pam_setcred-return_values"]/*)'/> + </section> +</section> diff --git a/doc/adg/pam_start.xml b/doc/adg/pam_start.xml new file mode 100644 index 00000000..e5ec8481 --- /dev/null +++ b/doc/adg/pam_start.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='adg-pam_start'> + <title>Initialization of PAM transaction</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_start.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_start-synopsis"]/*)'/> + </funcsynopsis> + <section id='adg-pam_start-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_start.3.xml" xpointer='xpointer(//refsect1[@id = "pam_start-description"]/*)'/> + </section> + <section id='adg-pam_start-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_start.3.xml" xpointer='xpointer(//refsect1[@id = "pam_start-return_values"]/*)'/> + </section> +</section> diff --git a/doc/adg/pam_strerror.xml b/doc/adg/pam_strerror.xml new file mode 100644 index 00000000..35b08a27 --- /dev/null +++ b/doc/adg/pam_strerror.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='adg-pam_strerror'> + <title>Strings describing PAM error codes</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_strerror.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_strerror-synopsis"]/*)'/> + </funcsynopsis> + <section id='adg-pam_strerror-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_strerror.3.xml" xpointer='xpointer(//refsect1[@id = "pam_strerror-description"]/*)'/> + </section> + <section id='adg-pam_strerror-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_strerror.3.xml" xpointer='xpointer(//refsect1[@id = "pam_strerror-return_values"]/*)'/> + </section> +</section> diff --git a/doc/index.html b/doc/index.html new file mode 100644 index 00000000..9afc8b79 --- /dev/null +++ b/doc/index.html @@ -0,0 +1,21 @@ +<html> + <head> + <title>The Linux-PAM Administration and Developer Guides</title> + </head> + <body> + <center> + <h1>The Linux-PAM Guides</h1> + </center> + <hr> + <p> + Here is the documentation for Linux-PAM. As you will see it is + currently not complete. + <p> + <ul> + <li> <a href="Linux-PAM_SAG.html">The System Administrators' Guide</a> + <li> <a href="Linux-PAM_MWG.html">The Module Writers' Guide</a> + <li> <a href="Linux-PAM_ADG.html">The Application Developers' Guide</a> + </ul> + <hr> + </body> +</html>
\ No newline at end of file diff --git a/doc/man/Makefile.am b/doc/man/Makefile.am new file mode 100644 index 00000000..52e5caab --- /dev/null +++ b/doc/man/Makefile.am @@ -0,0 +1,56 @@ +# +# Copyright (c) 2006, 2007 Thorsten Kukuk <kukuk@thkukuk.de> +# + +CLEANFILES = *~ +MAINTAINERCLEANFILES = $(MANS) + +EXTRA_DIST = $(MANS) $(XMLS) + +man_MANS = pam.3 PAM.8 pam.8 pam.conf.5 pam.d.5 \ + pam_acct_mgmt.3 pam_authenticate.3 \ + pam_chauthtok.3 pam_close_session.3 pam_conv.3 \ + pam_end.3 pam_error.3 \ + pam_fail_delay.3 pam_xauth_data.3 \ + pam_get_data.3 pam_get_item.3 pam_get_user.3 pam_getenv.3 \ + pam_getenvlist.3 \ + pam_info.3 \ + pam_open_session.3 \ + pam_prompt.3 pam_putenv.3 \ + pam_set_data.3 pam_set_item.3 pam_syslog.3 \ + pam_setcred.3 pam_sm_acct_mgmt.3 pam_sm_authenticate.3 \ + pam_sm_close_session.3 pam_sm_open_session.3 pam_sm_setcred.3 \ + pam_sm_chauthtok.3 pam_start.3 pam_strerror.3 \ + pam_verror.3 pam_vinfo.3 pam_vprompt.3 pam_vsyslog.3 \ + misc_conv.3 pam_misc_paste_env.3 pam_misc_drop_env.3 \ + pam_misc_setenv.3 +XMLS = pam.3.xml pam.8.xml \ + pam_acct_mgmt.3.xml pam_authenticate.3.xml \ + pam_chauthtok.3.xml pam_close_session.3.xml pam_conv.3.xml \ + pam_end.3.xml pam_error.3.xml \ + pam_fail_delay.3.xml pam_xauth_data.3 \ + pam_get_data.3.xml pam_get_item.3.xml pam_get_user.3.xml \ + pam_getenv.3.xml pam_getenvlist.3.xml \ + pam_info.3.xml \ + pam_open_session.3.xml \ + pam_prompt.3.xml pam_putenv.3.xml \ + pam_set_data.3.xml pam_set_item.3.xml pam_syslog.3.xml \ + pam_setcred.3.xml pam_sm_acct_mgmt.3.xml pam_sm_authenticate.3.xml \ + pam_sm_close_session.3.xml pam_sm_open_session.3.xml \ + pam_sm_setcred.3.xml pam_start.3.xml pam_strerror.3.xml \ + pam_sm_chauthtok.3.xml \ + pam_item_types_std.inc.xml pam_item_types_ext.inc.xml \ + pam.conf-desc.xml pam.conf-dir.xml pam.conf-syntax.xml \ + misc_conv.3.xml pam_misc_paste_env.3.xml pam_misc_drop_env.3.xml \ + pam_misc_setenv.3.xml + +if ENABLE_REGENERATE_MAN +PAM.8: pam.8 +pam.d.5: pam.conf.5 + test -f $(srcdir)/pam\\.d.5 && mv $(srcdir)/pam\\.d.5 $(srcdir)/pam.d.5 ||: + +pam_get_item.3: pam_item_types_std.inc.xml pam_item_types_ext.inc.xml +pam_set_data.3: pam_item_types_std.inc.xml pam_item_types_ext.inc.xml +pam.conf.5: pam.conf-desc.xml pam.conf-dir.xml pam.conf-syntax.xml +-include $(top_srcdir)/Make.xml.rules +endif diff --git a/doc/man/Makefile.in b/doc/man/Makefile.in new file mode 100644 index 00000000..c4e6beb7 --- /dev/null +++ b/doc/man/Makefile.in @@ -0,0 +1,586 @@ +# Makefile.in generated by automake 1.10.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +# +# Copyright (c) 2006, 2007 Thorsten Kukuk <kukuk@thkukuk.de> +# +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = @build@ +host_triplet = @host@ +subdir = doc/man +DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in +ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 +am__aclocal_m4_deps = $(top_srcdir)/m4/gettext.m4 \ + $(top_srcdir)/m4/iconv.m4 \ + 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$(XMLS) +man_MANS = pam.3 PAM.8 pam.8 pam.conf.5 pam.d.5 \ + pam_acct_mgmt.3 pam_authenticate.3 \ + pam_chauthtok.3 pam_close_session.3 pam_conv.3 \ + pam_end.3 pam_error.3 \ + pam_fail_delay.3 pam_xauth_data.3 \ + pam_get_data.3 pam_get_item.3 pam_get_user.3 pam_getenv.3 \ + pam_getenvlist.3 \ + pam_info.3 \ + pam_open_session.3 \ + pam_prompt.3 pam_putenv.3 \ + pam_set_data.3 pam_set_item.3 pam_syslog.3 \ + pam_setcred.3 pam_sm_acct_mgmt.3 pam_sm_authenticate.3 \ + pam_sm_close_session.3 pam_sm_open_session.3 pam_sm_setcred.3 \ + pam_sm_chauthtok.3 pam_start.3 pam_strerror.3 \ + pam_verror.3 pam_vinfo.3 pam_vprompt.3 pam_vsyslog.3 \ + misc_conv.3 pam_misc_paste_env.3 pam_misc_drop_env.3 \ + pam_misc_setenv.3 + +XMLS = pam.3.xml pam.8.xml \ + pam_acct_mgmt.3.xml pam_authenticate.3.xml \ + pam_chauthtok.3.xml pam_close_session.3.xml pam_conv.3.xml \ + pam_end.3.xml pam_error.3.xml \ + pam_fail_delay.3.xml pam_xauth_data.3 \ + pam_get_data.3.xml pam_get_item.3.xml pam_get_user.3.xml \ + 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test -f $(srcdir)/pam\\.d.5 && mv $(srcdir)/pam\\.d.5 $(srcdir)/pam.d.5 ||: + +@ENABLE_REGENERATE_MAN_TRUE@pam_get_item.3: pam_item_types_std.inc.xml pam_item_types_ext.inc.xml +@ENABLE_REGENERATE_MAN_TRUE@pam_set_data.3: pam_item_types_std.inc.xml pam_item_types_ext.inc.xml +@ENABLE_REGENERATE_MAN_TRUE@pam.conf.5: pam.conf-desc.xml pam.conf-dir.xml pam.conf-syntax.xml +@ENABLE_REGENERATE_MAN_TRUE@-include $(top_srcdir)/Make.xml.rules +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/doc/man/PAM.8 b/doc/man/PAM.8 new file mode 100644 index 00000000..1872d09a --- /dev/null +++ b/doc/man/PAM.8 @@ -0,0 +1,107 @@ +.\" Title: pam +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM" "8" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +PAM, pam - Pluggable Authentication Modules for Linux +.SH "DESCRIPTION" +.PP +This manual is intended to offer a quick introduction to +\fBLinux\-PAM\fR\. For more information the reader is directed to the +\fBLinux\-PAM system administrators\' guide\fR\. +.PP + +\fBLinux\-PAM\fR +is a system of libraries that handle the authentication tasks of applications (services) on the system\. The library provides a stable general interface (Application Programming Interface \- API) that privilege granting programs (such as +\fBlogin\fR(1) +and +\fBsu\fR(1)) defer to to perform standard authentication tasks\. +.PP +The principal feature of the PAM approach is that the nature of the authentication is dynamically configurable\. In other words, the system administrator is free to choose how individual service\-providing applications will authenticate users\. This dynamic configuration is set by the contents of the single +\fBLinux\-PAM\fR +configuration file +\fI/etc/pam\.conf\fR\. Alternatively, the configuration can be set by individual configuration files located in the +\fI/etc/pam\.d/\fR +directory\. The presence of this directory will cause +\fBLinux\-PAM\fR +to +\fIignore\fR +\fI/etc/pam\.conf\fR\. +.PP +From the point of view of the system administrator, for whom this manual is provided, it is not of primary importance to understand the internal behavior of the +\fBLinux\-PAM\fR +library\. The important point to recognize is that the configuration file(s) +\fIdefine\fR +the connection between applications +(\fBservices\fR) and the pluggable authentication modules +(\fBPAM\fRs) that perform the actual authentication tasks\. +.PP +\fBLinux\-PAM\fR +separates the tasks of +\fIauthentication\fR +into four independent management groups: +\fBaccount\fR +management; +\fBauth\fRentication management; +\fBpassword\fR +management; and +\fBsession\fR +management\. (We highlight the abbreviations used for these groups in the configuration file\.) +.PP +Simply put, these groups take care of different aspects of a typical user\'s request for a restricted service: +.PP +\fBaccount\fR +\- provide account verification types of service: has the user\'s password expired?; is this user permitted access to the requested service? +.PP +\fBauth\fRentication \- authenticate a user and set up user credentials\. Typically this is via some challenge\-response request that the user must satisfy: if you are who you claim to be please enter your password\. Not all authentications are of this type, there exist hardware based authentication schemes (such as the use of smart\-cards and biometric devices), with suitable modules, these may be substituted seamlessly for more standard approaches to authentication \- such is the flexibility of +\fBLinux\-PAM\fR\. +.PP +\fBpassword\fR +\- this group\'s responsibility is the task of updating authentication mechanisms\. Typically, such services are strongly coupled to those of the +\fBauth\fR +group\. Some authentication mechanisms lend themselves well to being updated with such a function\. Standard UN*X password\-based access is the obvious example: please enter a replacement password\. +.PP +\fBsession\fR +\- this group of tasks cover things that should be done prior to a service being given and after it is withdrawn\. Such tasks include the maintenance of audit trails and the mounting of the user\'s home directory\. The +\fBsession\fR +management group is important as it provides both an opening and closing hook for modules to affect the services available to a user\. +.SH "FILES" +.PP +\fI/etc/pam\.conf\fR +.RS 4 +the configuration file +.RE +.PP +\fI/etc/pam\.d\fR +.RS 4 +the +\fBLinux\-PAM\fR +configuration directory\. Generally, if this directory is present, the +\fI/etc/pam\.conf\fR +file is ignored\. +.RE +.SH "ERRORS" +.PP +Typically errors generated by the +\fBLinux\-PAM\fR +system of libraries, will be written to +\fBsyslog\fR(3)\. +.SH "CONFORMING TO" +.PP +DCE\-RFC 86\.0, October 1995\. Contains additional features, but remains backwardly compatible with this RFC\. +.SH "SEE ALSO" +.PP + +\fBpam\fR(3), +\fBpam_authenticate\fR(3), +\fBpam_sm_setcred\fR(3), +\fBpam_strerror\fR(3), +\fBPAM\fR(8) diff --git a/doc/man/misc_conv.3 b/doc/man/misc_conv.3 new file mode 100644 index 00000000..f8b33dff --- /dev/null +++ b/doc/man/misc_conv.3 @@ -0,0 +1,111 @@ +.\" Title: misc_conv +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "MISC_CONV" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +misc_conv - text based conversation function +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <security/pam_misc\.h> +.fi +.ft +.HP 15 +.BI "void misc_conv(int\ " "num_msg" ", const\ struct\ pam_message\ **" "msgm" ", struct\ pam_response\ **" "response" ", void\ *" "appdata_ptr" ");" +.SH "DESCRIPTION" +.PP +The +\fBmisc_conv\fR +function is part of +\fBlibpam_misc\fR +and not of the standard +\fBlibpam\fR +library\. This function will prompt the user with the appropriate comments and obtain the appropriate inputs as directed by authentication modules\. +.PP +In addition to simply slotting into the appropriate +\fBpam_conv\fR(3), this function provides some time\-out facilities\. The function exports five variables that can be used by an application programmer to limit the amount of time this conversation function will spend waiting for the user to type something\. The five variabls are as follows: +.PP +\fBtime_t\fR \fIpam_misc_conv_warn_time\fR; +.RS 4 +This variable contains the +\fItime\fR +(as returned by +\fBtime\fR(2)) that the user should be first warned that the clock is ticking\. By default it has the value +0, which indicates that no such warning will be given\. The application may set its value to sometime in the future, but this should be done prior to passing control to the +\fILinux\-PAM\fR +library\. +.RE +.PP +\fBconst char *\fR\fIpam_misc_conv_warn_line\fR; +.RS 4 +Used in conjuction with +\fIpam_misc_conv_warn_time\fR, this variable is a pointer to the string that will be displayed when it becomes time to warn the user that the timeout is approaching\. Its default value is a translated version of +\(lq\.\.\.Time is running out\.\.\.\(rq, but this can be changed by the application prior to passing control to +\fILinux\-PAM\fR\. +.RE +.PP +\fBtime_t\fR \fIpam_misc_conv_die_time\fR; +.RS 4 +This variable contains the +\fItime\fR +(as returned by +\fBtime\fR(2)) that the will time out\. By default it has the value +0, which indicates that the conversation function will not timeout\. The application may set its value to sometime in the future, but this should be done prior to passing control to the +\fILinux\-PAM\fR +library\. +.RE +.PP +\fBconst char *\fR\fIpam_misc_conv_die_line\fR; +.RS 4 +Used in conjuction with +\fIpam_misc_conv_die_time\fR, this variable is a pointer to the string that will be displayed when the conversation times out\. Its default value is a translated version of +\(lq\.\.\.Sorry, your time is up!\(rq, but this can be changed by the application prior to passing control to +\fILinux\-PAM\fR\. +.RE +.PP +\fBint\fR \fIpam_misc_conv_died\fR; +.RS 4 +Following a return from the +\fILinux\-PAM\fR +libraray, the value of this variable indicates whether the conversation has timed out\. A value of +1 +indicates the time\-out occurred\. +.RE +.PP +The following two function pointers are available for supporting binary prompts in the conversation function\. They are optimized for the current incarnation of the +\fBlibpamc\fR +library and are subject to change\. +.PP +\fBint\fR \fI(*pam_binary_handler_fn)\fR(\fBvoid *\fR\fIappdata\fR, \fBpamc_bp_t *\fR\fIprompt_p\fR); +.RS 4 +This function pointer is initialized to +NULL +but can be filled with a function that provides machine\-machine (hidden) message exchange\. It is intended for use with hidden authentication protocols such as RSA or Diffie\-Hellman key exchanges\. (This is still under development\.) +.RE +.PP +\fBint\fR \fI(*pam_binary_handler_free)\fR(\fBvoid *\fR\fIappdata\fR, \fBpamc_bp_t *\fR\fIdelete_me\fR); +.RS 4 +This function pointer is initialized to +\fBPAM_BP_RENEW(delete_me, 0, 0)\fR, but can be redefined as desired by the application\. +.RE +.SH "SEE ALSO" +.PP + +\fBpam_conv\fR(3), +\fBpam\fR(8) +.SH "STANDARDS" +.PP +The +\fBmisc_conv\fR +function is part of the +\fBlibpam_misc\fR +Library and not defined in any standard\. diff --git a/doc/man/misc_conv.3.xml b/doc/man/misc_conv.3.xml new file mode 100644 index 00000000..825dd10c --- /dev/null +++ b/doc/man/misc_conv.3.xml @@ -0,0 +1,188 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> + +<refentry id="misc_conv"> + + <refmeta> + <refentrytitle>misc_conv</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="misc_conv-name"> + <refname>misc_conv</refname> + <refpurpose>text based conversation function</refpurpose> + </refnamediv> + +<!-- body begins here --> + + <refsynopsisdiv> + <funcsynopsis id="misc_conv-synopsis"> + <funcsynopsisinfo>#include <security/pam_misc.h></funcsynopsisinfo> + <funcprototype> + <funcdef>void <function>misc_conv</function></funcdef> + <paramdef>int <parameter>num_msg</parameter></paramdef> + <paramdef>const struct pam_message **<parameter>msgm</parameter></paramdef> + <paramdef>struct pam_response **<parameter>response</parameter></paramdef> + <paramdef>void *<parameter>appdata_ptr</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + <refsect1 id='misc_conv-description'> + <title>DESCRIPTION</title> + <para> + The <function>misc_conv</function> function is part of + <command>libpam_misc</command> and not of the standard + <command>libpam</command> library. This function will prompt + the user with the appropriate comments and obtain the appropriate + inputs as directed by authentication modules. + </para> + <para> + In addition to simply slotting into the appropriate <citerefentry> + <refentrytitle>pam_conv</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, this function provides some time-out facilities. + The function exports five variables that can be used by an + application programmer to limit the amount of time this conversation + function will spend waiting for the user to type something. The + five variabls are as follows: + </para> + <variablelist> + <varlistentry> + <term><type>time_t</type> <varname>pam_misc_conv_warn_time</varname>;</term> + <listitem> + <para> + This variable contains the <emphasis>time</emphasis> (as + returned by <citerefentry> + <refentrytitle>time</refentrytitle><manvolnum>2</manvolnum> + </citerefentry>) that the user should be first warned that + the clock is ticking. By default it has the value + <returnvalue>0</returnvalue>, which indicates that no such + warning will be given. The application may set its value to + sometime in the future, but this should be done prior to + passing control to the <emphasis>Linux-PAM</emphasis> library. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term><type>const char *</type><varname>pam_misc_conv_warn_line</varname>;</term> + <listitem> + <para> + Used in conjuction with + <varname>pam_misc_conv_warn_time</varname>, this variable is + a pointer to the string that will be displayed when it becomes + time to warn the user that the timeout is approaching. Its + default value is a translated version of + <quote>...Time is running out...</quote>, but this can be + changed by the application prior to passing control to + <emphasis>Linux-PAM</emphasis>. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term><type>time_t</type> <varname>pam_misc_conv_die_time</varname>;</term> + <listitem> + <para> + This variable contains the <emphasis>time</emphasis> (as + returned by <citerefentry> + <refentrytitle>time</refentrytitle><manvolnum>2</manvolnum> + </citerefentry>) that the will time out. By default it has + the value <returnvalue>0</returnvalue>, which indicates that + the conversation function will not timeout. The application + may set its value to sometime in the future, but this should + be done prior to passing control to the + <emphasis>Linux-PAM</emphasis> library. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term><type>const char *</type><varname>pam_misc_conv_die_line</varname>;</term> + <listitem> + <para> + Used in conjuction with + <varname>pam_misc_conv_die_time</varname>, this variable is + a pointer to the string that will be displayed when the + conversation times out. Its default value is a translated + version of + <quote>...Sorry, your time is up!</quote>, but this can be + changed by the application prior to passing control to + <emphasis>Linux-PAM</emphasis>. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term><type>int</type> <varname>pam_misc_conv_died</varname>;</term> + <listitem> + <para> + Following a return from the <emphasis>Linux-PAM</emphasis> + libraray, the value of this variable indicates whether the + conversation has timed out. A value of + <returnvalue>1</returnvalue> indicates the time-out occurred. + </para> + </listitem> + </varlistentry> + </variablelist> + <para> + The following two function pointers are available for supporting + binary prompts in the conversation function. They are optimized + for the current incarnation of the <command>libpamc</command> + library and are subject to change. + </para> + <variablelist> + <varlistentry> + <term> + <type>int</type> <varname>(*pam_binary_handler_fn)</varname>(<type>void *</type><varname>appdata</varname>, <type>pamc_bp_t *</type><varname>prompt_p</varname>); + </term> + <listitem> + <para> + This function pointer is initialized to + <returnvalue>NULL</returnvalue> but can be filled with a + function that provides machine-machine (hidden) message + exchange. It is intended for use with hidden authentication + protocols such as RSA or Diffie-Hellman key exchanges. + (This is still under development.) + </para> + </listitem> + </varlistentry> + <varlistentry> + <term> + <type>int</type> <varname>(*pam_binary_handler_free)</varname>(<type>void *</type><varname>appdata</varname>, <type>pamc_bp_t *</type><varname>delete_me</varname>); + </term> + <listitem> + <para> + This function pointer is initialized to + <function>PAM_BP_RENEW(delete_me, 0, 0)</function>, but can be + redefined as desired by the application. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id='misc_conv-see_also'> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam_conv</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam</refentrytitle><manvolnum>8</manvolnum> + </citerefentry> + </para> + </refsect1> + + <refsect1 id='misc_conv-standards'> + <title>STANDARDS</title> + <para> + The <function>misc_conv</function> function is part of the + <command>libpam_misc</command> Library and not defined in any + standard. + </para> + </refsect1> + +</refentry> diff --git a/doc/man/pam.3 b/doc/man/pam.3 new file mode 100644 index 00000000..9de478e5 --- /dev/null +++ b/doc/man/pam.3 @@ -0,0 +1,282 @@ +.\" Title: pam +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam - Pluggable Authentication Modules Library +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <security/pam_appl\.h> +.fi +.ft +.sp +.ft B +.nf +#include <security/pam_modules\.h> +.fi +.ft +.sp +.ft B +.nf +#include <security/pam_ext\.h> +.fi +.ft +.SH "DESCRIPTION" +.PP + +\fBPAM\fR +is a system of libraries that handle the authentication tasks of applications (services) on the system\. The library provides a stable general interface (Application Programming Interface \- API) that privilege granting programs (such as +\fBlogin\fR(1) +and +\fBsu\fR(1)) defer to to perform standard authentication tasks\. +.SS "Initialization and Cleanup" +.PP +The +\fBpam_start\fR(3) +function creates the PAM context and initiates the PAM transaction\. It is the first of the PAM functions that needs to be called by an application\. The transaction state is contained entirely within the structure identified by this handle, so it is possible to have multiple transactions in parallel\. But it is not possible to use the same handle for different transactions, a new one is needed for every new context\. +.PP +The +\fBpam_end\fR(3) +function terminates the PAM transaction and is the last function an application should call in the PAM context\. Upon return the handle pamh is no longer valid and all memory associated with it will be invalid\. It can be called at any time to terminate a PAM transaction\. +.SS "Authentication" +.PP +The +\fBpam_authenticate\fR(3) +function is used to authenticate the user\. The user is required to provide an authentication token depending upon the authentication service, usually this is a password, but could also be a finger print\. +.PP +The +\fBpam_setcred\fR(3) +function manages the userscredentials\. +.SS "Account Management" +.PP +The +\fBpam_acct_mgmt\fR(3) +function is used to determine if the users account is valid\. It checks for authentication token and account expiration and verifies access restrictions\. It is typically called after the user has been authenticated\. +.SS "Password Management" +.PP +The +\fBpam_chauthtok\fR(3) +function is used to change the authentication token for a given user on request or because the token has expired\. +.SS "Session Management" +.PP +The +\fBpam_open_session\fR(3) +function sets up a user session for a previously successful authenticated user\. The session should later be terminated with a call to +\fBpam_close_session\fR(3)\. +.SS "Conversation" +.PP +The PAM library uses an application\-defined callback to allow a direct communication between a loaded module and the application\. This callback is specified by the +\fIstruct pam_conv\fR +passed to +\fBpam_start\fR(3) +at the start of the transaction\. See +\fBpam_conv\fR(3) +for details\. +.SS "Data Objects" +.PP +The +\fBpam_set_item\fR(3) +and +\fBpam_get_item\fR(3) +functions allows applications and PAM service modules to set and retrieve PAM informations\. +.PP +The +\fBpam_get_user\fR(3) +function is the preferred method to obtain the username\. +.PP +The +\fBpam_set_data\fR(3) +and +\fBpam_get_data\fR(3) +functions allows PAM service modules to set and retrieve free\-form data from one invocation to another\. +.SS "Environment and Error Management" +.PP +The +\fBpam_putenv\fR(3), +\fBpam_getenv\fR(3) +and +\fBpam_getenvlist\fR(3) +functions are for maintaining a set of private environment variables\. +.PP +The +\fBpam_strerror\fR(3) +function returns a pointer to a string describing the given PAM error code\. +.SH "RETURN VALUES" +.PP +The following return codes are known by PAM: +.PP +PAM_ABORT +.RS 4 +Critical error, immediate abort\. +.RE +.PP +PAM_ACCT_EXPIRED +.RS 4 +User account has expired\. +.RE +.PP +PAM_AUTHINFO_UNAVAIL +.RS 4 +Authentication service cannot retrieve authentication info\. +.RE +.PP +PAM_AUTHTOK_DISABLE_AGING +.RS 4 +Authentication token aging disabled\. +.RE +.PP +PAM_AUTHTOK_ERR +.RS 4 +Authentication token manipulation error\. +.RE +.PP +PAM_AUTHTOK_EXPIRED +.RS 4 +Authentication token expired\. +.RE +.PP +PAM_AUTHTOK_LOCK_BUSY +.RS 4 +Authentication token lock busy\. +.RE +.PP +PAM_AUTHTOK_RECOVERY_ERR +.RS 4 +Authentication information cannot be recovered\. +.RE +.PP +PAM_AUTH_ERR +.RS 4 +Authentication failure\. +.RE +.PP +PAM_BUF_ERR +.RS 4 +Memory buffer error\. +.RE +.PP +PAM_CONV_ERR +.RS 4 +Conversation failure\. +.RE +.PP +PAM_CRED_ERR +.RS 4 +Failure setting user credentials\. +.RE +.PP +PAM_CRED_EXPIRED +.RS 4 +User credentials expired\. +.RE +.PP +PAM_CRED_INSUFFICIENT +.RS 4 +Insufficient credentials to access authentication data\. +.RE +.PP +PAM_CRED_UNAVAIL +.RS 4 +Authentication service cannot retrieve user credentials\. +.RE +.PP +PAM_IGNORE +.RS 4 +The return value should be ignored by PAM dispatch\. +.RE +.PP +PAM_MAXTRIES +.RS 4 +Have exhausted maximum number of retries for service\. +.RE +.PP +PAM_MODULE_UNKNOWN +.RS 4 +Module is unknown\. +.RE +.PP +PAM_NEW_AUTHTOK_REQD +.RS 4 +Authentication token is no longer valid; new one required\. +.RE +.PP +PAM_NO_MODULE_DATA +.RS 4 +No module specific data is present\. +.RE +.PP +PAM_OPEN_ERR +.RS 4 +Failed to load module\. +.RE +.PP +PAM_PERM_DENIED +.RS 4 +Permission denied\. +.RE +.PP +PAM_SERVICE_ERR +.RS 4 +Error in service module\. +.RE +.PP +PAM_SESSION_ERR +.RS 4 +Cannot make/remove an entry for the specified session\. +.RE +.PP +PAM_SUCCESS +.RS 4 +Success\. +.RE +.PP +PAM_SYMBOL_ERR +.RS 4 +Symbol not found\. +.RE +.PP +PAM_SYSTEM_ERR +.RS 4 +System error\. +.RE +.PP +PAM_TRY_AGAIN +.RS 4 +Failed preliminary check by password service\. +.RE +.PP +PAM_USER_UNKNOWN +.RS 4 +User not known to the underlying authentication module\. +.RE +.SH "SEE ALSO" +.PP + +\fBpam_acct_mgmt\fR(3), +\fBpam_authenticate\fR(3), +\fBpam_chauthtok\fR(3), +\fBpam_close_session\fR(3), +\fBpam_conv\fR(3), +\fBpam_end\fR(3), +\fBpam_get_data\fR(3), +\fBpam_getenv\fR(3), +\fBpam_getenvlist\fR(3), +\fBpam_get_item\fR(3), +\fBpam_get_user\fR(3), +\fBpam_open_session\fR(3), +\fBpam_putenv\fR(3), +\fBpam_set_data\fR(3), +\fBpam_set_item\fR(3), +\fBpam_setcred\fR(3), +\fBpam_start\fR(3), +\fBpam_strerror\fR(3) diff --git a/doc/man/pam.3.xml b/doc/man/pam.3.xml new file mode 100644 index 00000000..3cf71b2d --- /dev/null +++ b/doc/man/pam.3.xml @@ -0,0 +1,433 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> +<refentry id='pam3'> + + <refmeta> + <refentrytitle>pam</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id='pam3-name'> + <refname>pam</refname> + <refpurpose>Pluggable Authentication Modules Library</refpurpose> + </refnamediv> + + <refsynopsisdiv id='pam3-synopsis'> + <funcsynopsis> + <funcsynopsisinfo>#include <security/pam_appl.h></funcsynopsisinfo> + <funcsynopsisinfo>#include <security/pam_modules.h></funcsynopsisinfo> + <funcsynopsisinfo>#include <security/pam_ext.h></funcsynopsisinfo> + </funcsynopsis> + </refsynopsisdiv> + + <refsect1 id='pam3-description'> + <title>DESCRIPTION</title> + <para> + <emphasis remap='B'>PAM</emphasis> is a system of libraries + that handle the authentication tasks of applications (services) + on the system. The library provides a stable general interface + (Application Programming Interface - API) that privilege granting + programs (such as + <citerefentry> + <refentrytitle>login</refentrytitle><manvolnum>1</manvolnum> + </citerefentry> and <citerefentry> + <refentrytitle>su</refentrytitle><manvolnum>1</manvolnum> + </citerefentry>) + defer to to perform standard authentication tasks. + </para> + + <refsect2 id='pam3-initialization_and_cleanup'> + <title>Initialization and Cleanup</title> + <para> + The + <citerefentry> + <refentrytitle>pam_start</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> function creates the PAM context and initiates the + PAM transaction. It is the first of the PAM functions that needs to + be called by an application. The transaction state is contained + entirely within the structure identified by this handle, so it is + possible to have multiple transactions in parallel. But it is not + possible to use the same handle for different transactions, a new + one is needed for every new context. + </para> + <para> + The + <citerefentry> + <refentrytitle>pam_end</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> function terminates the PAM transaction and is the last + function an application should call in the PAM context. Upon return + the handle pamh is no longer valid and all memory associated with it + will be invalid. It can be called at any time to terminate a PAM + transaction. + </para> + </refsect2> + + <refsect2 id='pam3-authentication'> + <title>Authentication</title> + <para> + The + <citerefentry> + <refentrytitle>pam_authenticate</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> + function is used to + authenticate the user. The user is required to provide an + authentication token depending upon the authentication service, + usually this is a password, but could also be a finger print. + </para> + <para> + The + <citerefentry> + <refentrytitle>pam_setcred</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> + function manages the userscredentials. + </para> + </refsect2> + + <refsect2 id='pam3-account_management'> + <title>Account Management</title> + <para> + The + <citerefentry> + <refentrytitle>pam_acct_mgmt</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> function is used to determine if the users account is + valid. It checks for authentication token and account expiration and + verifies access restrictions. It is typically called after the user + has been authenticated. + </para> + </refsect2> + + <refsect2 id='pam3-password_management'> + <title>Password Management</title> + <para> + The + <citerefentry> + <refentrytitle>pam_chauthtok</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> function is used to change the authentication token + for a given user on request or because the token has expired. + </para> + </refsect2> + + <refsect2 id='pam3-session_management'> + <title>Session Management</title> + <para> + The + <citerefentry> + <refentrytitle>pam_open_session</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> function sets up a user session for a previously + successful authenticated user. The session should later be terminated + with a call to + <citerefentry> + <refentrytitle>pam_close_session</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>. + </para> + </refsect2> + + <refsect2 id='pam3-conversation'> + <title>Conversation</title> + <para> + The PAM library uses an application-defined callback to allow + a direct communication between a loaded module and the application. + This callback is specified by the + <emphasis>struct pam_conv</emphasis> passed to + <citerefentry> + <refentrytitle>pam_start</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> at the start of the transaction. See + <citerefentry> + <refentrytitle>pam_conv</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> + for details. + </para> + </refsect2> + + <refsect2 id='pam3-data'> + <title>Data Objects</title> + <para> + The + <citerefentry> + <refentrytitle>pam_set_item</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> + and + <citerefentry> + <refentrytitle>pam_get_item</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> + functions allows applications and PAM service modules to set and + retrieve PAM informations. + </para> + <para> + The + <citerefentry> + <refentrytitle>pam_get_user</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> + function is the preferred method to obtain the username. + </para> + <para> + The + <citerefentry> + <refentrytitle>pam_set_data</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> + and + <citerefentry> + <refentrytitle>pam_get_data</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> + functions allows PAM service modules to set and retrieve free-form + data from one invocation to another. + </para> + </refsect2> + + <refsect2 id='pam3-miscellaneous'> + <title>Environment and Error Management</title> + <para> + The + <citerefentry> + <refentrytitle>pam_putenv</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_getenv</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> and + <citerefentry> + <refentrytitle>pam_getenvlist</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> + functions are for maintaining a set of private environment variables. + </para> + + <para> + The + <citerefentry> + <refentrytitle>pam_strerror</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> function returns a pointer to a string describing the + given PAM error code. + </para> + </refsect2> + </refsect1> + + <refsect1 id='pam3-return_values'> + <title>RETURN VALUES</title> + <para> + The following return codes are known by PAM: + </para> + <variablelist> + <varlistentry> + <term>PAM_ABORT</term> + <listitem> + <para>Critical error, immediate abort.</para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_ACCT_EXPIRED</term> + <listitem> + <para>User account has expired.</para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_AUTHINFO_UNAVAIL</term> + <listitem> + <para> + Authentication service cannot retrieve authentication info. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_AUTHTOK_DISABLE_AGING</term> + <listitem> + <para>Authentication token aging disabled.</para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_AUTHTOK_ERR</term> + <listitem> + <para>Authentication token manipulation error.</para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_AUTHTOK_EXPIRED</term> + <listitem> + <para>Authentication token expired.</para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_AUTHTOK_LOCK_BUSY</term> + <listitem> + <para>Authentication token lock busy.</para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_AUTHTOK_RECOVERY_ERR</term> + <listitem> + <para>Authentication information cannot be recovered.</para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_AUTH_ERR</term> + <listitem> + <para>Authentication failure.</para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_BUF_ERR</term> + <listitem> + <para>Memory buffer error.</para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_CONV_ERR</term> + <listitem> + <para>Conversation failure.</para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_CRED_ERR</term> + <listitem> + <para>Failure setting user credentials.</para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_CRED_EXPIRED</term> + <listitem> + <para>User credentials expired.</para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_CRED_INSUFFICIENT</term> + <listitem> + <para>Insufficient credentials to access authentication data.</para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_CRED_UNAVAIL</term> + <listitem> + <para>Authentication service cannot retrieve user credentials.</para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_IGNORE</term> + <listitem> + <para>The return value should be ignored by PAM dispatch.</para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_MAXTRIES</term> + <listitem> + <para>Have exhausted maximum number of retries for service.</para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_MODULE_UNKNOWN</term> + <listitem> + <para>Module is unknown.</para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_NEW_AUTHTOK_REQD</term> + <listitem> + <para> + Authentication token is no longer valid; new one required. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_NO_MODULE_DATA</term> + <listitem> + <para>No module specific data is present.</para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_OPEN_ERR</term> + <listitem> + <para>Failed to load module.</para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_PERM_DENIED</term> + <listitem> + <para>Permission denied.</para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SERVICE_ERR</term> + <listitem> + <para>Error in service module.</para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SESSION_ERR</term> + <listitem> + <para>Cannot make/remove an entry for the specified session.</para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para>Success.</para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SYMBOL_ERR</term> + <listitem> + <para>Symbol not found.</para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SYSTEM_ERR</term> + <listitem> + <para>System error.</para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_TRY_AGAIN</term> + <listitem> + <para>Failed preliminary check by password service.</para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_USER_UNKNOWN</term> + <listitem> + <para>User not known to the underlying authentication module.</para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id='see_also'><title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam_acct_mgmt</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, <citerefentry> + <refentrytitle>pam_authenticate</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, <citerefentry> + <refentrytitle>pam_chauthtok</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, <citerefentry> + <refentrytitle>pam_close_session</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, <citerefentry> + <refentrytitle>pam_conv</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, <citerefentry> + <refentrytitle>pam_end</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, <citerefentry> + <refentrytitle>pam_get_data</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, <citerefentry> + <refentrytitle>pam_getenv</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, <citerefentry> + <refentrytitle>pam_getenvlist</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, <citerefentry> + <refentrytitle>pam_get_item</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, <citerefentry> + <refentrytitle>pam_get_user</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, <citerefentry> + <refentrytitle>pam_open_session</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, <citerefentry> + <refentrytitle>pam_putenv</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, <citerefentry> + <refentrytitle>pam_set_data</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, <citerefentry> + <refentrytitle>pam_set_item</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, <citerefentry> + <refentrytitle>pam_setcred</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, <citerefentry> + <refentrytitle>pam_start</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, <citerefentry> + <refentrytitle>pam_strerror</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> + </para> + </refsect1> +</refentry> diff --git a/doc/man/pam.8 b/doc/man/pam.8 new file mode 100644 index 00000000..da9773b9 --- /dev/null +++ b/doc/man/pam.8 @@ -0,0 +1 @@ +.so man8/PAM.8 diff --git a/doc/man/pam.8.xml b/doc/man/pam.8.xml new file mode 100644 index 00000000..1267f01c --- /dev/null +++ b/doc/man/pam.8.xml @@ -0,0 +1,186 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> + +<refentry id='pam8'> + + <refmeta> + <refentrytitle>pam</refentrytitle> + <manvolnum>8</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id='pam8-name'> + <refname>PAM</refname> + <refname>pam</refname> + <refpurpose>Pluggable Authentication Modules for Linux</refpurpose> + </refnamediv> + + <refsect1 id='pam8-description'> + <title>DESCRIPTION</title> + <para> + This manual is intended to offer a quick introduction to + <emphasis remap='B'>Linux-PAM</emphasis>. For more information + the reader is directed to the + <emphasis remap='B'>Linux-PAM system administrators' guide</emphasis>. + </para> + + <para> + <emphasis remap='B'>Linux-PAM</emphasis> is a system of libraries + that handle the authentication tasks of applications (services) on + the system. The library provides a stable general interface + (Application Programming Interface - API) that privilege granting + programs (such as <citerefentry> + <refentrytitle>login</refentrytitle><manvolnum>1</manvolnum> + </citerefentry> and <citerefentry> + <refentrytitle>su</refentrytitle><manvolnum>1</manvolnum> + </citerefentry>) defer to to perform standard authentication tasks. + </para> + + <para> + The principal feature of the PAM approach is that the nature of the + authentication is dynamically configurable. In other words, the + system administrator is free to choose how individual + service-providing applications will authenticate users. This dynamic + configuration is set by the contents of the single + <emphasis remap='B'>Linux-PAM</emphasis> configuration file + <filename>/etc/pam.conf</filename>. Alternatively, the configuration + can be set by individual configuration files located in the + <filename>/etc/pam.d/</filename> directory. The presence of this + directory will cause <emphasis remap='B'>Linux-PAM</emphasis> to + <emphasis remap='I'>ignore</emphasis> + <filename>/etc/pam.conf</filename>. + </para> + + +<para>From the point of view of the system administrator, for whom this +manual is provided, it is not of primary importance to understand the +internal behavior of the +<emphasis remap='B'>Linux-PAM</emphasis> +library. The important point to recognize is that the configuration +file(s) +<emphasis remap='I'>define</emphasis> +the connection between applications +<emphasis remap='B'></emphasis>(<emphasis remap='B'>services</emphasis>) +and the pluggable authentication modules +<emphasis remap='B'></emphasis>(<emphasis remap='B'>PAM</emphasis>s) +that perform the actual authentication tasks.</para> + + +<para><emphasis remap='B'>Linux-PAM</emphasis> +separates the tasks of +<emphasis remap='I'>authentication</emphasis> +into four independent management groups: +<emphasis remap='B'>account</emphasis> management; +<emphasis remap='B'>auth</emphasis>entication management; +<emphasis remap='B'>password</emphasis> management; +and +<emphasis remap='B'>session</emphasis> management. +(We highlight the abbreviations used for these groups in the +configuration file.)</para> + + +<para>Simply put, these groups take care of different aspects of a typical +user's request for a restricted service:</para> + + +<para><emphasis remap='B'>account</emphasis> - +provide account verification types of service: has the user's password +expired?; is this user permitted access to the requested service?</para> + +<!-- .br --> +<para><emphasis remap='B'>auth</emphasis>entication - +authenticate a user and set up user credentials. Typically this is via +some challenge-response request that the user must satisfy: if you are +who you claim to be please enter your password. Not all authentications +are of this type, there exist hardware based authentication schemes +(such as the use of smart-cards and biometric devices), with suitable +modules, these may be substituted seamlessly for more standard +approaches to authentication - such is the flexibility of +<emphasis remap='B'>Linux-PAM</emphasis>.</para> + +<!-- .br --> +<para><emphasis remap='B'>password</emphasis> - +this group's responsibility is the task of updating authentication +mechanisms. Typically, such services are strongly coupled to those of +the +<emphasis remap='B'>auth</emphasis> +group. Some authentication mechanisms lend themselves well to being +updated with such a function. Standard UN*X password-based access is +the obvious example: please enter a replacement password.</para> + +<!-- .br --> +<para><emphasis remap='B'>session</emphasis> - +this group of tasks cover things that should be done prior to a +service being given and after it is withdrawn. Such tasks include the +maintenance of audit trails and the mounting of the user's home +directory. The +<emphasis remap='B'>session</emphasis> +management group is important as it provides both an opening and +closing hook for modules to affect the services available to a user.</para> + +</refsect1> + + <refsect1 id='pam8-files'> + <title>FILES</title> + <variablelist> + <varlistentry> + <term><filename>/etc/pam.conf</filename></term> + <listitem> + <para>the configuration file</para> + </listitem> + </varlistentry> + <varlistentry> + <term><filename>/etc/pam.d</filename></term> + <listitem> + <para> + the <emphasis remap='B'>Linux-PAM</emphasis> configuration + directory. Generally, if this directory is present, the + <filename>/etc/pam.conf</filename> file is ignored. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id='pam8-errors'> + <title>ERRORS</title> + <para> + Typically errors generated by the + <emphasis remap='B'>Linux-PAM</emphasis> system of libraries, will + be written to <citerefentry> + <refentrytitle>syslog</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>. + </para> + </refsect1> + + <refsect1 id='pam8-conforming_to'> + <title>CONFORMING TO</title> + <para> + DCE-RFC 86.0, October 1995. + Contains additional features, but remains backwardly compatible + with this RFC. + </para> + </refsect1> + + <refsect1 id='pam8-see_also'> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_authenticate</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_sm_setcred</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_strerror</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>PAM</refentrytitle><manvolnum>8</manvolnum> + </citerefentry> + </para> + </refsect1> +</refentry> diff --git a/doc/man/pam.conf-desc.xml b/doc/man/pam.conf-desc.xml new file mode 100644 index 00000000..909dcdbe --- /dev/null +++ b/doc/man/pam.conf-desc.xml @@ -0,0 +1,21 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> +<section id='pam.conf-desc'> + <para> + When a <emphasis>PAM</emphasis> aware privilege granting application + is started, it activates its attachment to the PAM-API. This + activation performs a number of tasks, the most important being the + reading of the configuration file(s): <filename>/etc/pam.conf</filename>. + Alternatively, this may be the contents of the + <filename>/etc/pam.d/</filename> directory. The presence of this + directory will cause Linux-PAM to ignore + <filename>/etc/pam.conf</filename>. + </para> + <para> + These files list the <emphasis>PAM</emphasis>s that will do the + authentication tasks required by this service, and the appropriate + behavior of the PAM-API in the event that individual + <emphasis>PAM</emphasis>s fail. + </para> +</section> diff --git a/doc/man/pam.conf-dir.xml b/doc/man/pam.conf-dir.xml new file mode 100644 index 00000000..8446cf35 --- /dev/null +++ b/doc/man/pam.conf-dir.xml @@ -0,0 +1,30 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> +<section id='pam.conf-dir'> + <para> + More flexible than the single configuration file is it to + configure libpam via the contents of the + <filename>/etc/pam.d/</filename> directory. In this case the + directory is filled with files each of which has a filename + equal to a service-name (in lower-case): it is the personal + configuration file for the named service. + </para> + + <para> + The syntax of each file in /etc/pam.d/ is similar to that of the + <filename>/etc/pam.conf</filename> file and is made up of lines + of the following form: + </para> + + <programlisting> +type control module-path module-arguments + </programlisting> + + <para> + The only difference being that the service-name is not present. The + service-name is of course the name of the given configuration file. + For example, <filename>/etc/pam.d/login</filename> contains the + configuration for the <emphasis remap='B'>login</emphasis> service. + </para> +</section> diff --git a/doc/man/pam.conf-syntax.xml b/doc/man/pam.conf-syntax.xml new file mode 100644 index 00000000..1460c6f6 --- /dev/null +++ b/doc/man/pam.conf-syntax.xml @@ -0,0 +1,393 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> + +<section id='pam.conf-syntax'> + <para> + The syntax of the <filename>/etc/pam.conf</filename> + configuration file is as follows. The file is made up of a list + of rules, each rule is typically placed on a single line, + but may be extended with an escaped end of line: `\<LF>'. + Comments are preceded with `#' marks and extend to the next end of + line. + </para> + + <para> + The format of each rule is a space separated collection of tokens, + the first three being case-insensitive: + </para> + + <para> + <emphasis remap='B'> service type control module-path module-arguments</emphasis> + </para> + + <para> + The syntax of files contained in the <filename>/etc/pam.d/</filename> + directory, are identical except for the absence of any + <emphasis>service</emphasis> field. In this case, the + <emphasis>service</emphasis> is the name of the file in the + <filename>/etc/pam.d/</filename> directory. This filename must be + in lower case. + </para> + + <para> + An important feature of <emphasis>PAM</emphasis>, is that a + number of rules may be <emphasis>stacked</emphasis> to combine + the services of a number of PAMs for a given authentication task. + </para> + + <para> + The <emphasis>service</emphasis> is typically the familiar name of + the corresponding application: <emphasis>login</emphasis> and + <emphasis>su</emphasis> are good examples. The + <emphasis>service</emphasis>-name, <emphasis>other</emphasis>, + is reserved for giving <emphasis>default</emphasis> rules. + Only lines that mention the current service (or in the absence + of such, the <emphasis>other</emphasis> entries) will be associated + with the given service-application. + </para> + + <para> + The <emphasis>type</emphasis> is the management group that the rule + corresponds to. It is used to specify which of the management groups + the subsequent module is to be associated with. Valid entries are: + </para> + <variablelist> + <varlistentry> + <term>account</term> + <listitem> + <para> + this module type performs non-authentication based account + management. It is typically used to restrict/permit access + to a service based on the time of day, currently available + system resources (maximum number of users) or perhaps the + location of the applicant user -- 'root' login only on the + console. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>auth</term> + <listitem> + <para> + this module type provides two aspects of authenticating + the user. Firstly, it establishes that the user is who they + claim to be, by instructing the application to prompt the user + for a password or other means of identification. Secondly, the + module can grant group membership or other privileges through + its credential granting properties. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>password</term> + <listitem> + <para> + this module type is required for updating the authentication + token associated with the user. Typically, there is one module + for each 'challenge/response' based authentication (auth) type. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>session</term> + <listitem> + <para> + this module type is associated with doing things that need to + be done for the user before/after they can be given service. + Such things include the logging of information concerning the + opening/closing of some data exchange with a user, mounting + directories, etc. + </para> + </listitem> + </varlistentry> + </variablelist> + + <para> + The third field, <emphasis>control</emphasis>, indicates the + behavior of the PAM-API should the module fail to succeed in its + authentication task. There are two types of syntax for this control + field: the simple one has a single simple keyword; the more + complicated one involves a square-bracketed selection of + <emphasis>value=action</emphasis> pairs. + </para> + + <para> + For the simple (historical) syntax valid <emphasis>control</emphasis> + values are: + </para> + <variablelist> + <varlistentry> + <term>required</term> + <listitem> + <para> + failure of such a PAM will ultimately lead to the PAM-API + returning failure but only after the remaining + <emphasis>stacked</emphasis> modules (for this + <emphasis>service</emphasis> and <emphasis>type</emphasis>) + have been invoked. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>requisite</term> + <listitem> + <para> + like <emphasis>required</emphasis>, however, in the case that + such a module returns a failure, control is directly returned + to the application. The return value is that associated with + the first required or requisite module to fail. Note, this flag + can be used to protect against the possibility of a user getting + the opportunity to enter a password over an unsafe medium. It is + conceivable that such behavior might inform an attacker of valid + accounts on a system. This possibility should be weighed against + the not insignificant concerns of exposing a sensitive password + in a hostile environment. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>sufficient</term> + <listitem> + <para> + success of such a module is enough to satisfy the + authentication requirements of the stack of modules (if a + prior <emphasis>required</emphasis> module has failed the + success of this one is <emphasis>ignored</emphasis>). A failure + of this module is not deemed as fatal to satisfying the + application that this type has succeeded. If the module succeeds + the PAM framework returns success to the application immediately + without trying any other modules. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>optional</term> + <listitem> + <para> + the success or failure of this module is only important if + it is the only module in the stack associated with this + <emphasis>service</emphasis>+<emphasis>type</emphasis>. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>include</term> + <listitem> + <para> + include all lines of given type from the configuration + file specified as an argument to this control. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>substack</term> + <listitem> + <para> + include all lines of given type from the configuration + file specified as an argument to this control. This differs from + <emphasis>include</emphasis> in that evaluation of the + <emphasis>done</emphasis> and <emphasis>die</emphasis> actions + in a substack does not cause skipping the rest of the complete + module stack, but only of the substack. Jumps in a substack + also can not make evaluation jump out of it, and the whole substack + is counted as one module when the jump is done in a parent stack. + The <emphasis>reset</emphasis> action will reset the state of a + module stack to the state it was in as of beginning of the substack + evaluation. + </para> + </listitem> + </varlistentry> + </variablelist> + + <para> + For the more complicated syntax valid <emphasis>control</emphasis> + values have the following form: + </para> + <programlisting> + [value1=action1 value2=action2 ...] + </programlisting> + + <para> + Where <emphasis>valueN</emphasis> corresponds to the return code + from the function invoked in the module for which the line is + defined. It is selected from one of these: + <emphasis>success</emphasis>, <emphasis>open_err</emphasis>, + <emphasis>symbol_err</emphasis>, <emphasis>service_err</emphasis>, + <emphasis>system_err</emphasis>, <emphasis>buf_err</emphasis>, + <emphasis>perm_denied</emphasis>, <emphasis>auth_err</emphasis>, + <emphasis>cred_insufficient</emphasis>, + <emphasis>authinfo_unavail</emphasis>, + <emphasis>user_unknown</emphasis>, <emphasis>maxtries</emphasis>, + <emphasis>new_authtok_reqd</emphasis>, + <emphasis>acct_expired</emphasis>, <emphasis>session_err</emphasis>, + <emphasis>cred_unavail</emphasis>, <emphasis>cred_expired</emphasis>, + <emphasis>cred_err</emphasis>, <emphasis>no_module_data</emphasis>, + <emphasis>conv_err</emphasis>, <emphasis>authtok_err</emphasis>, + <emphasis>authtok_recover_err</emphasis>, + <emphasis>authtok_lock_busy</emphasis>, + <emphasis>authtok_disable_aging</emphasis>, + <emphasis>try_again</emphasis>, <emphasis>ignore</emphasis>, + <emphasis>abort</emphasis>, <emphasis>authtok_expired</emphasis>, + <emphasis>module_unknown</emphasis>, <emphasis>bad_item</emphasis>, + <emphasis>conv_again</emphasis>, <emphasis>incomplete</emphasis>, + and <emphasis>default</emphasis>. + </para> + <para> + The last of these, <emphasis>default</emphasis>, implies 'all + <emphasis>valueN</emphasis>'s not mentioned explicitly. Note, the + full list of PAM errors is available in + <filename>/usr/include/security/_pam_types.h</filename>. The + <emphasis>actionN</emphasis> can be: an unsigned integer, + <emphasis>n</emphasis>, signifying an action of 'jump over the + next <emphasis>n</emphasis> modules in the stack'; or take one + of the following forms: + </para> + <variablelist> + <varlistentry> + <term>ignore</term> + <listitem> + <para> + when used with a stack of modules, the module's return + status will not contribute to the return code the application + obtains. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>bad</term> + <listitem> + <para> + this action indicates that the return code should be thought + of as indicative of the module failing. If this module is the + first in the stack to fail, its status value will be used for + that of the whole stack. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>die</term> + <listitem> + <para> + equivalent to bad with the side effect of terminating the + module stack and PAM immediately returning to the application. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>ok</term> + <listitem> + <para> + this tells PAM that the administrator thinks this return code + should contribute directly to the return code of the full + stack of modules. In other words, if the former state of the + stack would lead to a return of <emphasis>PAM_SUCCESS</emphasis>, + the module's return code will override this value. Note, if + the former state of the stack holds some value that is + indicative of a modules failure, this 'ok' value will not be + used to override that value. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>done</term> + <listitem> + <para> + equivalent to ok with the side effect of terminating the module + stack and PAM immediately returning to the application. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>reset</term> + <listitem> + <para> + clear all memory of the state of the module stack and + start again with the next stacked module. + </para> + </listitem> + </varlistentry> + </variablelist> + + <para> + Each of the four keywords: required; requisite; sufficient; and + optional, have an equivalent expression in terms of the [...] + syntax. They are as follows: + </para> + <variablelist> + <varlistentry> + <term>required</term> + <listitem> + <para> + [success=ok new_authtok_reqd=ok ignore=ignore default=bad] + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>requisite</term> + <listitem> + <para> + [success=ok new_authtok_reqd=ok ignore=ignore default=die] + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>sufficient</term> + <listitem> + <para> + [success=done new_authtok_reqd=done default=ignore] + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>optional</term> + <listitem> + <para> + [success=ok new_authtok_reqd=ok default=ignore] + </para> + </listitem> + </varlistentry> + </variablelist> + + <para> + <emphasis>module-path</emphasis> is either the full filename + of the PAM to be used by the application (it begins with a '/'), + or a relative pathname from the default module location: + <filename>/lib/security/</filename> or + <filename>/lib64/security/</filename>, depending on the architecture. + </para> + + <para> + <emphasis>module-arguments</emphasis> are a space separated list + of tokens that can be used to modify the specific behavior of the + given PAM. Such arguments will be documented for each individual + module. Note, if you wish to include spaces in an argument, you + should surround that argument with square brackets. + </para> + <programlisting> + squid auth required pam_mysql.so user=passwd_query passwd=mada \ + db=eminence [query=select user_name from internet_service \ + where user_name='%u' and password=PASSWORD('%p') and \ + service='web_proxy'] + </programlisting> + <para> + When using this convention, you can include `[' characters + inside the string, and if you wish to include a `]' character + inside the string that will survive the argument parsing, you + should use `\]'. In other words: + </para> + <programlisting> + [..[..\]..] --> ..[..].. + </programlisting> + + <para> + Any line in (one of) the configuration file(s), that is not formatted + correctly, will generally tend (erring on the side of caution) to make + the authentication process fail. A corresponding error is written to + the system log files with a call to + <citerefentry> + <refentrytitle>syslog</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>. + </para> + +</section> diff --git a/doc/man/pam.conf.5 b/doc/man/pam.conf.5 new file mode 100644 index 00000000..669739a0 --- /dev/null +++ b/doc/man/pam.conf.5 @@ -0,0 +1,317 @@ +.\" Title: pam.conf +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM\.CONF" "5" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam.conf, pam.d - PAM configuration files +.SH "DESCRIPTION" +.PP +When a +\fIPAM\fR +aware privilege granting application is started, it activates its attachment to the PAM\-API\. This activation performs a number of tasks, the most important being the reading of the configuration file(s): +\fI/etc/pam\.conf\fR\. Alternatively, this may be the contents of the +\fI/etc/pam\.d/\fR +directory\. The presence of this directory will cause Linux\-PAM to ignore +\fI/etc/pam\.conf\fR\. +.PP +These files list the +\fIPAM\fRs that will do the authentication tasks required by this service, and the appropriate behavior of the PAM\-API in the event that individual +\fIPAM\fRs fail\. +.PP +The syntax of the +\fI/etc/pam\.conf\fR +configuration file is as follows\. The file is made up of a list of rules, each rule is typically placed on a single line, but may be extended with an escaped end of line: `\e<LF>\'\. Comments are preceded with `#\' marks and extend to the next end of line\. +.PP +The format of each rule is a space separated collection of tokens, the first three being case\-insensitive: +.PP + +\fB service type control module\-path module\-arguments\fR +.PP +The syntax of files contained in the +\fI/etc/pam\.d/\fR +directory, are identical except for the absence of any +\fIservice\fR +field\. In this case, the +\fIservice\fR +is the name of the file in the +\fI/etc/pam\.d/\fR +directory\. This filename must be in lower case\. +.PP +An important feature of +\fIPAM\fR, is that a number of rules may be +\fIstacked\fR +to combine the services of a number of PAMs for a given authentication task\. +.PP +The +\fIservice\fR +is typically the familiar name of the corresponding application: +\fIlogin\fR +and +\fIsu\fR +are good examples\. The +\fIservice\fR\-name, +\fIother\fR, is reserved for giving +\fIdefault\fR +rules\. Only lines that mention the current service (or in the absence of such, the +\fIother\fR +entries) will be associated with the given service\-application\. +.PP +The +\fItype\fR +is the management group that the rule corresponds to\. It is used to specify which of the management groups the subsequent module is to be associated with\. Valid entries are: +.PP +account +.RS 4 +this module type performs non\-authentication based account management\. It is typically used to restrict/permit access to a service based on the time of day, currently available system resources (maximum number of users) or perhaps the location of the applicant user \-\- \'root\' login only on the console\. +.RE +.PP +auth +.RS 4 +this module type provides two aspects of authenticating the user\. Firstly, it establishes that the user is who they claim to be, by instructing the application to prompt the user for a password or other means of identification\. Secondly, the module can grant group membership or other privileges through its credential granting properties\. +.RE +.PP +password +.RS 4 +this module type is required for updating the authentication token associated with the user\. Typically, there is one module for each \'challenge/response\' based authentication (auth) type\. +.RE +.PP +session +.RS 4 +this module type is associated with doing things that need to be done for the user before/after they can be given service\. Such things include the logging of information concerning the opening/closing of some data exchange with a user, mounting directories, etc\. +.RE +.PP +The third field, +\fIcontrol\fR, indicates the behavior of the PAM\-API should the module fail to succeed in its authentication task\. There are two types of syntax for this control field: the simple one has a single simple keyword; the more complicated one involves a square\-bracketed selection of +\fIvalue=action\fR +pairs\. +.PP +For the simple (historical) syntax valid +\fIcontrol\fR +values are: +.PP +required +.RS 4 +failure of such a PAM will ultimately lead to the PAM\-API returning failure but only after the remaining +\fIstacked\fR +modules (for this +\fIservice\fR +and +\fItype\fR) have been invoked\. +.RE +.PP +requisite +.RS 4 +like +\fIrequired\fR, however, in the case that such a module returns a failure, control is directly returned to the application\. The return value is that associated with the first required or requisite module to fail\. Note, this flag can be used to protect against the possibility of a user getting the opportunity to enter a password over an unsafe medium\. It is conceivable that such behavior might inform an attacker of valid accounts on a system\. This possibility should be weighed against the not insignificant concerns of exposing a sensitive password in a hostile environment\. +.RE +.PP +sufficient +.RS 4 +success of such a module is enough to satisfy the authentication requirements of the stack of modules (if a prior +\fIrequired\fR +module has failed the success of this one is +\fIignored\fR)\. A failure of this module is not deemed as fatal to satisfying the application that this type has succeeded\. If the module succeeds the PAM framework returns success to the application immediately without trying any other modules\. +.RE +.PP +optional +.RS 4 +the success or failure of this module is only important if it is the only module in the stack associated with this +\fIservice\fR+\fItype\fR\. +.RE +.PP +include +.RS 4 +include all lines of given type from the configuration file specified as an argument to this control\. +.RE +.PP +substack +.RS 4 +include all lines of given type from the configuration file specified as an argument to this control\. This differs from +\fIinclude\fR +in that evaluation of the +\fIdone\fR +and +\fIdie\fR +actions in a substack does not cause skipping the rest of the complete module stack, but only of the substack\. Jumps in a substack also can not make evaluation jump out of it, and the whole substack is counted as one module when the jump is done in a parent stack\. The +\fIreset\fR +action will reset the state of a module stack to the state it was in as of beginning of the substack evaluation\. +.RE +.PP +For the more complicated syntax valid +\fIcontrol\fR +values have the following form: +.sp +.RS 4 +.nf + [value1=action1 value2=action2 \.\.\.] + +.fi +.RE +.PP +Where +\fIvalueN\fR +corresponds to the return code from the function invoked in the module for which the line is defined\. It is selected from one of these: +\fIsuccess\fR, +\fIopen_err\fR, +\fIsymbol_err\fR, +\fIservice_err\fR, +\fIsystem_err\fR, +\fIbuf_err\fR, +\fIperm_denied\fR, +\fIauth_err\fR, +\fIcred_insufficient\fR, +\fIauthinfo_unavail\fR, +\fIuser_unknown\fR, +\fImaxtries\fR, +\fInew_authtok_reqd\fR, +\fIacct_expired\fR, +\fIsession_err\fR, +\fIcred_unavail\fR, +\fIcred_expired\fR, +\fIcred_err\fR, +\fIno_module_data\fR, +\fIconv_err\fR, +\fIauthtok_err\fR, +\fIauthtok_recover_err\fR, +\fIauthtok_lock_busy\fR, +\fIauthtok_disable_aging\fR, +\fItry_again\fR, +\fIignore\fR, +\fIabort\fR, +\fIauthtok_expired\fR, +\fImodule_unknown\fR, +\fIbad_item\fR, +\fIconv_again\fR, +\fIincomplete\fR, and +\fIdefault\fR\. +.PP +The last of these, +\fIdefault\fR, implies \'all +\fIvalueN\fR\'s not mentioned explicitly\. Note, the full list of PAM errors is available in +\fI/usr/include/security/_pam_types\.h\fR\. The +\fIactionN\fR +can be: an unsigned integer, +\fIn\fR, signifying an action of \'jump over the next +\fIn\fR +modules in the stack\'; or take one of the following forms: +.PP +ignore +.RS 4 +when used with a stack of modules, the module\'s return status will not contribute to the return code the application obtains\. +.RE +.PP +bad +.RS 4 +this action indicates that the return code should be thought of as indicative of the module failing\. If this module is the first in the stack to fail, its status value will be used for that of the whole stack\. +.RE +.PP +die +.RS 4 +equivalent to bad with the side effect of terminating the module stack and PAM immediately returning to the application\. +.RE +.PP +ok +.RS 4 +this tells PAM that the administrator thinks this return code should contribute directly to the return code of the full stack of modules\. In other words, if the former state of the stack would lead to a return of +\fIPAM_SUCCESS\fR, the module\'s return code will override this value\. Note, if the former state of the stack holds some value that is indicative of a modules failure, this \'ok\' value will not be used to override that value\. +.RE +.PP +done +.RS 4 +equivalent to ok with the side effect of terminating the module stack and PAM immediately returning to the application\. +.RE +.PP +reset +.RS 4 +clear all memory of the state of the module stack and start again with the next stacked module\. +.RE +.PP +Each of the four keywords: required; requisite; sufficient; and optional, have an equivalent expression in terms of the [\.\.\.] syntax\. They are as follows: +.PP +required +.RS 4 +[success=ok new_authtok_reqd=ok ignore=ignore default=bad] +.RE +.PP +requisite +.RS 4 +[success=ok new_authtok_reqd=ok ignore=ignore default=die] +.RE +.PP +sufficient +.RS 4 +[success=done new_authtok_reqd=done default=ignore] +.RE +.PP +optional +.RS 4 +[success=ok new_authtok_reqd=ok default=ignore] +.RE +.PP + +\fImodule\-path\fR +is either the full filename of the PAM to be used by the application (it begins with a \'/\'), or a relative pathname from the default module location: +\fI/lib/security/\fR +or +\fI/lib64/security/\fR, depending on the architecture\. +.PP + +\fImodule\-arguments\fR +are a space separated list of tokens that can be used to modify the specific behavior of the given PAM\. Such arguments will be documented for each individual module\. Note, if you wish to include spaces in an argument, you should surround that argument with square brackets\. +.sp +.RS 4 +.nf + squid auth required pam_mysql\.so user=passwd_query passwd=mada \e + db=eminence [query=select user_name from internet_service \e + where user_name=\'%u\' and password=PASSWORD(\'%p\') and \e + service=\'web_proxy\'] + +.fi +.RE +.PP +When using this convention, you can include `[\' characters inside the string, and if you wish to include a `]\' character inside the string that will survive the argument parsing, you should use `\e]\'\. In other words: +.sp +.RS 4 +.nf + [\.\.[\.\.\e]\.\.] \-\-> \.\.[\.\.]\.\. + +.fi +.RE +.PP +Any line in (one of) the configuration file(s), that is not formatted correctly, will generally tend (erring on the side of caution) to make the authentication process fail\. A corresponding error is written to the system log files with a call to +\fBsyslog\fR(3)\. +.PP +More flexible than the single configuration file is it to configure libpam via the contents of the +\fI/etc/pam\.d/\fR +directory\. In this case the directory is filled with files each of which has a filename equal to a service\-name (in lower\-case): it is the personal configuration file for the named service\. +.PP +The syntax of each file in /etc/pam\.d/ is similar to that of the +\fI/etc/pam\.conf\fR +file and is made up of lines of the following form: +.sp +.RS 4 +.nf +type control module\-path module\-arguments + +.fi +.RE +.PP +The only difference being that the service\-name is not present\. The service\-name is of course the name of the given configuration file\. For example, +\fI/etc/pam\.d/login\fR +contains the configuration for the +\fBlogin\fR +service\. +.SH "SEE ALSO" +.PP + +\fBpam\fR(3), +\fBPAM\fR(8), +\fBpam_start\fR(3) diff --git a/doc/man/pam.d.5 b/doc/man/pam.d.5 new file mode 100644 index 00000000..e4606aed --- /dev/null +++ b/doc/man/pam.d.5 @@ -0,0 +1 @@ +.so man5/pam.conf.5 diff --git a/doc/man/pam_acct_mgmt.3 b/doc/man/pam_acct_mgmt.3 new file mode 100644 index 00000000..072cf189 --- /dev/null +++ b/doc/man/pam_acct_mgmt.3 @@ -0,0 +1,84 @@ +.\" Title: pam_acct_mgmt +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_ACCT_MGMT" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_acct_mgmt - PAM account validation management +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <security/pam_appl\.h> +.fi +.ft +.HP 18 +.BI "int pam_acct_mgmt(pam_handle_t\ *" "pamh" ", int\ " "flags" ");" +.SH "DESCRIPTION" +.PP +The +\fBpam_acct_mgmt\fR +function is used to determine if the users account is valid\. It checks for authentication token and account expiration and verifies access restrictions\. It is typically called after the user has been authenticated\. +.PP +The +\fIpamh\fR +argument is an authentication handle obtained by a prior call to pam_start()\. The flags argument is the binary or of zero or more of the following values: +.PP +PAM_SILENT +.RS 4 +Do not emit any messages\. +.RE +.PP +PAM_DISALLOW_NULL_AUTHTOK +.RS 4 +The PAM module service should return PAM_NEW_AUTHTOK_REQD if the user has a null authentication token\. +.RE +.SH "RETURN VALUES" +.PP +PAM_ACCT_EXPIRED +.RS 4 +User account has expired\. +.RE +.PP +PAM_AUTH_ERR +.RS 4 +Authentication failure\. +.RE +.PP +PAM_NEW_AUTHTOK_REQD +.RS 4 +The user account is valid but their authentication token is +\fIexpired\fR\. The correct response to this return\-value is to require that the user satisfies the +\fBpam_chauthtok()\fR +function before obtaining service\. It may not be possible for some applications to do this\. In such cases, the user should be denied access until such time as they can update their password\. +.RE +.PP +PAM_PERM_DENIED +.RS 4 +Permission denied\. +.RE +.PP +PAM_SUCCESS +.RS 4 +The authentication token was successfully updated\. +.RE +.PP +PAM_USER_UNKNOWN +.RS 4 +User unknown to password service\. +.RE +.SH "SEE ALSO" +.PP + +\fBpam_start\fR(3), +\fBpam_authenticate\fR(3), +\fBpam_chauthtok\fR(3), +\fBpam_strerror\fR(3), +\fBpam\fR(8) diff --git a/doc/man/pam_acct_mgmt.3.xml b/doc/man/pam_acct_mgmt.3.xml new file mode 100644 index 00000000..72274d1e --- /dev/null +++ b/doc/man/pam_acct_mgmt.3.xml @@ -0,0 +1,145 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> +<refentry id='pam_acct_mgmt'> + <refmeta> + <refentrytitle>pam_acct_mgmt</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_acct_mgmt-name"> + <refname>pam_acct_mgmt</refname> + <refpurpose>PAM account validation management</refpurpose> + </refnamediv> + +<!-- body begins here --> + + <refsynopsisdiv> + <funcsynopsis id='pam_acct_mgmt-synopsis'> + <funcsynopsisinfo>#include <security/pam_appl.h></funcsynopsisinfo> + <funcprototype> + <funcdef>int <function>pam_acct_mgmt</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>int <parameter>flags</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + + <refsect1 id='pam_acct_mgmt-description'> + <title>DESCRIPTION</title> + <para> + The <function>pam_acct_mgmt</function> function is used to determine + if the users account is valid. It checks for authentication token + and account expiration and verifies access restrictions. It is + typically called after the user has been authenticated. + </para> + <para> + The <emphasis>pamh</emphasis> argument is an authentication + handle obtained by a prior call to pam_start(). + The flags argument is the binary or of zero or more of the + following values: + </para> + <variablelist> + <varlistentry> + <term>PAM_SILENT</term> + <listitem> + <para> + Do not emit any messages. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_DISALLOW_NULL_AUTHTOK</term> + <listitem> + <para> + The PAM module service should return PAM_NEW_AUTHTOK_REQD + if the user has a null authentication token. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id="pam_acct_mgmt-return_values"> + <title>RETURN VALUES</title> + <variablelist> + <varlistentry> + <term>PAM_ACCT_EXPIRED</term> + <listitem> + <para> + User account has expired. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_AUTH_ERR</term> + <listitem> + <para> + Authentication failure. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_NEW_AUTHTOK_REQD</term> + <listitem> + <para> + The user account is valid but their authentication token + is <emphasis>expired</emphasis>. The correct response to + this return-value is to require that the user satisfies + the <function>pam_chauthtok()</function> function before + obtaining service. It may not be possible for some + applications to do this. In such cases, the user should be + denied access until such time as they can update their password. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_PERM_DENIED</term> + <listitem> + <para> + Permission denied. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + The authentication token was successfully updated. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_USER_UNKNOWN</term> + <listitem> + <para> + User unknown to password service. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id='pam_acct_mgmt-see_also'> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam_start</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_authenticate</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_chauthtok</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_strerror</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam</refentrytitle><manvolnum>8</manvolnum> + </citerefentry> + </para> + </refsect1> +</refentry> diff --git a/doc/man/pam_authenticate.3 b/doc/man/pam_authenticate.3 new file mode 100644 index 00000000..49a540cc --- /dev/null +++ b/doc/man/pam_authenticate.3 @@ -0,0 +1,94 @@ +.\" Title: pam_authenticate +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_AUTHENTICATE" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_authenticate - account authentication +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <security/pam_appl\.h> +.fi +.ft +.HP 21 +.BI "int pam_authenticate(pam_handle_t\ *" "pamh" ", int\ " "flags" ");" +.SH "DESCRIPTION" +.PP +The +\fBpam_authenticate\fR +function is used to authenticate the user\. The user is required to provide an authentication token depending upon the authentication service, usually this is a password, but could also be a finger print\. +.PP +The PAM service module may request that the user enter their username vio the the conversation mechanism (see +\fBpam_start\fR(3) +and +\fBpam_conv\fR(3))\. The name of the authenticated user will be present in the PAM item PAM_USER\. This item may be recovered with a call to +\fBpam_get_item\fR(3)\. +.PP +The +\fIpamh\fR +argument is an authentication handle obtained by a prior call to pam_start()\. The flags argument is the binary or of zero or more of the following values: +.PP +PAM_SILENT +.RS 4 +Do not emit any messages\. +.RE +.PP +PAM_DISALLOW_NULL_AUTHTOK +.RS 4 +The PAM module service should return PAM_AUTH_ERR if the user does not have a registered authentication token\. +.RE +.SH "RETURN VALUES" +.PP +PAM_ABORT +.RS 4 +The application should exit immediately after calling +\fBpam_end\fR(3) +first\. +.RE +.PP +PAM_AUTH_ERR +.RS 4 +The user was not authenticated\. +.RE +.PP +PAM_CRED_INSUFFICIENT +.RS 4 +For some reason the application does not have sufficient credentials to authenticate the user\. +.RE +.PP +PAM_AUTHINFO_UNVAIL +.RS 4 +The modules were not able to access the authentication information\. This might be due to a network or hardware failure etc\. +.RE +.PP +PAM_MAXTRIES +.RS 4 +One or more of the authentication modules has reached its limit of tries authenticating the user\. Do not try again\. +.RE +.PP +PAM_SUCCESS +.RS 4 +The user was successfully authenticated\. +.RE +.PP +PAM_USER_UNKNOWN +.RS 4 +User unknown to authentication service\. +.RE +.SH "SEE ALSO" +.PP + +\fBpam_start\fR(3), +\fBpam_setcred\fR(3), +\fBpam_chauthtok\fR(3), +\fBpam_strerror\fR(3), +\fBpam\fR(8) diff --git a/doc/man/pam_authenticate.3.xml b/doc/man/pam_authenticate.3.xml new file mode 100644 index 00000000..8ddc38c9 --- /dev/null +++ b/doc/man/pam_authenticate.3.xml @@ -0,0 +1,169 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> +<refentry id='pam_authenticate'> + <refmeta> + <refentrytitle>pam_authenticate</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_authenticate-name"> + <refname>pam_authenticate</refname> + <refpurpose>account authentication</refpurpose> + </refnamediv> + +<!-- body begins here --> + + <refsynopsisdiv> + <funcsynopsis id='pam_authenticate-synopsis'> + <funcsynopsisinfo>#include <security/pam_appl.h></funcsynopsisinfo> + <funcprototype> + <funcdef>int <function>pam_authenticate</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>int <parameter>flags</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + + <refsect1 id='pam_authenticate-description'> + <title>DESCRIPTION</title> + <para> + The <function>pam_authenticate</function> function is used to + authenticate the user. The user is required to provide an + authentication token depending upon the authentication service, + usually this is a password, but could also be a finger print. + </para> + <para> + The PAM service module may request that the user enter their + username vio the the conversation mechanism (see + <citerefentry> + <refentrytitle>pam_start</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> and + <citerefentry> + <refentrytitle>pam_conv</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>). The name of the authenticated user + will be present in the PAM item PAM_USER. This item may be + recovered with a call to + <citerefentry> + <refentrytitle>pam_get_item</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>. + </para> + <para> + The <emphasis>pamh</emphasis> argument is an authentication + handle obtained by a prior call to pam_start(). + The flags argument is the binary or of zero or more of the + following values: + </para> + <variablelist> + <varlistentry> + <term>PAM_SILENT</term> + <listitem> + <para> + Do not emit any messages. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_DISALLOW_NULL_AUTHTOK</term> + <listitem> + <para> + The PAM module service should return PAM_AUTH_ERR + if the user does not have a registered authentication token. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id="pam_authenticate-return_values"> + <title>RETURN VALUES</title> + <variablelist> + <varlistentry> + <term>PAM_ABORT</term> + <listitem> + <para> + The application should exit immediately after calling + <citerefentry> + <refentrytitle>pam_end</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> first. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_AUTH_ERR</term> + <listitem> + <para> + The user was not authenticated. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_CRED_INSUFFICIENT</term> + <listitem> + <para> + For some reason the application does not have sufficient + credentials to authenticate the user. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_AUTHINFO_UNVAIL</term> + <listitem> + <para> + The modules were not able to access the authentication + information. This might be due to a network or hardware + failure etc. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_MAXTRIES</term> + <listitem> + <para> + One or more of the authentication modules has reached its + limit of tries authenticating the user. Do not try again. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + The user was successfully authenticated. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_USER_UNKNOWN</term> + <listitem> + <para> + User unknown to authentication service. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id='pam_authenticate-see_also'> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam_start</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_setcred</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_chauthtok</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_strerror</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam</refentrytitle><manvolnum>8</manvolnum> + </citerefentry> + </para> + </refsect1> +</refentry> diff --git a/doc/man/pam_chauthtok.3 b/doc/man/pam_chauthtok.3 new file mode 100644 index 00000000..4580ae9b --- /dev/null +++ b/doc/man/pam_chauthtok.3 @@ -0,0 +1,93 @@ +.\" Title: pam_chauthtok +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_CHAUTHTOK" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_chauthtok - updating authentication tokens +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <security/pam_appl\.h> +.fi +.ft +.HP 18 +.BI "int pam_chauthtok(pam_handle_t\ *" "pamh" ", int\ " "flags" ");" +.SH "DESCRIPTION" +.PP +The +\fBpam_chauthtok\fR +function is used to change the authentication token for a given user (as indicated by the state associated with the handle +\fIpamh\fR)\. +.PP +The +\fIpamh\fR +argument is an authentication handle obtained by a prior call to pam_start()\. The flags argument is the binary or of zero or more of the following values: +.PP +PAM_SILENT +.RS 4 +Do not emit any messages\. +.RE +.PP +PAM_CHANGE_EXPIRED_AUTHTOK +.RS 4 +This argument indicates to the modules that the users authentication token (password) should only be changed if it has expired\. If this argument is not passed, the application requires that all authentication tokens are to be changed\. +.RE +.SH "RETURN VALUES" +.PP +PAM_AUTHTOK_ERR +.RS 4 +A module was unable to obtain the new authentication token\. +.RE +.PP +PAM_AUTHTOK_RECOVERY_ERR +.RS 4 +A module was unable to obtain the old authentication token\. +.RE +.PP +PAM_AUTHTOK_LOCK_BUSY +.RS 4 +One or more of the modules was unable to change the authentication token since it is currently locked\. +.RE +.PP +PAM_AUTHTOK_DISABLE_AGING +.RS 4 +Authentication token aging has been disabled for at least one of the modules\. +.RE +.PP +PAM_PERM_DENIED +.RS 4 +Permission denied\. +.RE +.PP +PAM_SUCCESS +.RS 4 +The authentication token was successfully updated\. +.RE +.PP +PAM_TRY_AGAIN +.RS 4 +Not all of the modules were in a position to update the authentication token(s)\. In such a case none of the user\'s authentication tokens are updated\. +.RE +.PP +PAM_USER_UNKNOWN +.RS 4 +User unknown to password service\. +.RE +.SH "SEE ALSO" +.PP + +\fBpam_start\fR(3), +\fBpam_authenticate\fR(3), +\fBpam_setcred\fR(3), +\fBpam_get_item\fR(3), +\fBpam_strerror\fR(3), +\fBpam\fR(8) diff --git a/doc/man/pam_chauthtok.3.xml b/doc/man/pam_chauthtok.3.xml new file mode 100644 index 00000000..7e20070b --- /dev/null +++ b/doc/man/pam_chauthtok.3.xml @@ -0,0 +1,164 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> +<refentry id='pam_chauthtok'> + <refmeta> + <refentrytitle>pam_chauthtok</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_chauthtok-name"> + <refname>pam_chauthtok</refname> + <refpurpose>updating authentication tokens</refpurpose> + </refnamediv> + +<!-- body begins here --> + + <refsynopsisdiv> + <funcsynopsis id='pam_chauthtok-synopsis'> + <funcsynopsisinfo>#include <security/pam_appl.h></funcsynopsisinfo> + <funcprototype> + <funcdef>int <function>pam_chauthtok</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>int <parameter>flags</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + + <refsect1 id='pam_chauthtok-description'> + <title>DESCRIPTION</title> + <para> + The <function>pam_chauthtok</function> function is used to change the + authentication token for a given user (as indicated by the state + associated with the handle <emphasis>pamh</emphasis>). + </para> + <para> + The <emphasis>pamh</emphasis> argument is an authentication + handle obtained by a prior call to pam_start(). + The flags argument is the binary or of zero or more of the + following values: + </para> + <variablelist> + <varlistentry> + <term>PAM_SILENT</term> + <listitem> + <para> + Do not emit any messages. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_CHANGE_EXPIRED_AUTHTOK</term> + <listitem> + <para> + This argument indicates to the modules that the users + authentication token (password) should only be changed + if it has expired. + If this argument is not passed, the application requires + that all authentication tokens are to be changed. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id="pam_chauthtok-return_values"> + <title>RETURN VALUES</title> + <variablelist> + <varlistentry> + <term>PAM_AUTHTOK_ERR</term> + <listitem> + <para> + A module was unable to obtain the new authentication token. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_AUTHTOK_RECOVERY_ERR</term> + <listitem> + <para> + A module was unable to obtain the old authentication token. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_AUTHTOK_LOCK_BUSY</term> + <listitem> + <para> + One or more of the modules was unable to change the + authentication token since it is currently locked. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_AUTHTOK_DISABLE_AGING</term> + <listitem> + <para> + Authentication token aging has been disabled for at least + one of the modules. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_PERM_DENIED</term> + <listitem> + <para> + Permission denied. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + The authentication token was successfully updated. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_TRY_AGAIN</term> + <listitem> + <para> + Not all of the modules were in a position to update the + authentication token(s). In such a case none of the user's + authentication tokens are updated. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_USER_UNKNOWN</term> + <listitem> + <para> + User unknown to password service. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id='pam_chauthtok-see_also'> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam_start</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_authenticate</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_setcred</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_get_item</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_strerror</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam</refentrytitle><manvolnum>8</manvolnum> + </citerefentry> + </para> + </refsect1> +</refentry> diff --git a/doc/man/pam_close_session.3 b/doc/man/pam_close_session.3 new file mode 100644 index 00000000..8088c5dc --- /dev/null +++ b/doc/man/pam_close_session.3 @@ -0,0 +1,65 @@ +.\" Title: pam_close_session +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_CLOSE_SESSION" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_close_session - terminate PAM session management +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <security/pam_appl\.h> +.fi +.ft +.HP 22 +.BI "int pam_close_session(pam_handle_t\ *" "pamh" ", int\ " "flags" ");" +.SH "DESCRIPTION" +.PP +The +\fBpam_close_session\fR +function is used to indicate that an authenticated session has ended\. The session should have been created with a call to +\fBpam_open_session\fR(3)\. +.PP +It should be noted that the effective uid, +\fBgeteuid\fR(2)\. of the application should be of sufficient privilege to perform such tasks as unmounting the user\'s home directory for example\. +.PP +The flags argument is the binary or of zero or more of the following values: +.PP +PAM_SILENT +.RS 4 +Do not emit any messages\. +.RE +.SH "RETURN VALUES" +.PP +PAM_ABORT +.RS 4 +General failure\. +.RE +.PP +PAM_BUF_ERR +.RS 4 +Memory buffer error\. +.RE +.PP +PAM_SESSION_ERR +.RS 4 +Session failure\. +.RE +.PP +PAM_SUCCESS +.RS 4 +Session was successful terminated\. +.RE +.SH "SEE ALSO" +.PP + +\fBpam_open_session\fR(3), +\fBpam_strerror\fR(3) diff --git a/doc/man/pam_close_session.3.xml b/doc/man/pam_close_session.3.xml new file mode 100644 index 00000000..db549bda --- /dev/null +++ b/doc/man/pam_close_session.3.xml @@ -0,0 +1,115 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> + +<refentry id='pam_send'> + + <refmeta> + <refentrytitle>pam_close_session</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_close_session-name"> + <refname>pam_close_session</refname> + <refpurpose>terminate PAM session management</refpurpose> + </refnamediv> + +<!-- body begins here --> + + <refsynopsisdiv> + <funcsynopsis id="pam_close_session-synopsis"> + <funcsynopsisinfo>#include <security/pam_appl.h></funcsynopsisinfo> + <funcprototype> + <funcdef>int <function>pam_close_session</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>int <parameter>flags</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + + <refsect1 id="pam_close_session-description"> + <title>DESCRIPTION</title> + <para> + The <function>pam_close_session</function> function is used + to indicate that an authenticated session has ended. + The session should have been created with a call to + <citerefentry> + <refentrytitle>pam_open_session</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>. + </para> + <para> + It should be noted that the effective uid, + <citerefentry> + <refentrytitle>geteuid</refentrytitle><manvolnum>2</manvolnum> + </citerefentry>. of the application should be of sufficient + privilege to perform such tasks as unmounting the + user's home directory for example. + </para> + <para> + The flags argument is the binary or of zero or more of the + following values: + </para> + <variablelist> + <varlistentry> + <term>PAM_SILENT</term> + <listitem> + <para> + Do not emit any messages. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id="pam_close_session-return_values"> + <title>RETURN VALUES</title> + <variablelist> + <varlistentry> + <term>PAM_ABORT</term> + <listitem> + <para> + General failure. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_BUF_ERR</term> + <listitem> + <para> + Memory buffer error. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SESSION_ERR</term> + <listitem> + <para> + Session failure. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + Session was successful terminated. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id="pam_close_session-see_also"> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam_open_session</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_strerror</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> + </para> + </refsect1> +</refentry> diff --git a/doc/man/pam_conv.3 b/doc/man/pam_conv.3 new file mode 100644 index 00000000..626d47af --- /dev/null +++ b/doc/man/pam_conv.3 @@ -0,0 +1,145 @@ +.\" Title: pam_conv +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_CONV" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_conv - PAM conversation function +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <security/pam_appl\.h> +.fi +.ft +.sp +.RS 4 +.nf +struct pam_message { + int msg_style; + const char *msg; +}; + +struct pam_response { + char *resp; + int resp_retcode; +}; + +struct pam_conv { + int (*conv)(int num_msg, const struct pam_message **msg, + struct pam_response **resp, void *appdata_ptr); + void *appdata_ptr; +}; + +.fi +.RE +.SH "DESCRIPTION" +.PP +The PAM library uses an application\-defined callback to allow a direct communication between a loaded module and the application\. This callback is specified by the +\fIstruct pam_conv\fR +passed to +\fBpam_start\fR(3) +at the start of the transaction\. +.PP +When a module calls the referenced conv() function, the argument +\fIappdata_ptr\fR +is set to the second element of this structure\. +.PP +The other arguments of a call to conv() concern the information exchanged by module and application\. That is to say, +\fInum_msg\fR +holds the length of the array of pointers, +\fImsg\fR\. After a successful return, the pointer +\fIresp\fR +points to an array of pam_response structures, holding the application supplied text\. The +\fIresp_retcode\fR +member of this struct is unused and should be set to zero\. It is the caller\'s responsibility to release both, this array and the responses themselves, using +\fBfree\fR(3)\. Note, +\fI*resp\fR +is a +\fIstruct pam_response\fR +array and not an array of pointers\. +.PP +The number of responses is always equal to the +\fInum_msg\fR +conversation function argument\. This does require that the response array is +\fBfree\fR(3)\'d after every call to the conversation function\. The index of the responses corresponds directly to the prompt index in the pam_message array\. +.PP +On failure, the conversation function should release any resources it has allocated, and return one of the predefined PAM error codes\. +.PP +Each message can have one of four types, specified by the +\fImsg_style\fR +member of +\fIstruct pam_message\fR: +.PP +PAM_PROMPT_ECHO_OFF +.RS 4 +Obtain a string without echoing any text\. +.RE +.PP +PAM_PROMPT_ECHO_ON +.RS 4 +Obtain a string whilst echoing text\. +.RE +.PP +PAM_ERROR_MSG +.RS 4 +Display an error message\. +.RE +.PP +PAM_TEXT_INFO +.RS 4 +Display some text\. +.RE +.PP +The point of having an array of messages is that it becomes possible to pass a number of things to the application in a single call from the module\. It can also be convenient for the application that related things come at once: a windows based application can then present a single form with many messages/prompts on at once\. +.PP +In passing, it is worth noting that there is a descrepency between the way Linux\-PAM handles the const struct pam_message **msg conversation function argument from the way that Solaris\' PAM (and derivitives, known to include HP/UX, are there others?) does\. Linux\-PAM interprets the msg argument as entirely equivalent to the following prototype const struct pam_message *msg[] (which, in spirit, is consistent with the commonly used prototypes for argv argument to the familiar main() function: char **argv; and char *argv[])\. Said another way Linux\-PAM interprets the msg argument as a pointer to an array of num_msg read only \'struct pam_message\' pointers\. Solaris\' PAM implementation interprets this argument as a pointer to a pointer to an array of num_msg pam_message structures\. Fortunately, perhaps, for most module/application developers when num_msg has a value of one these two definitions are entirely equivalent\. Unfortunately, casually raising this number to two has led to unanticipated compatibility problems\. +.PP +For what its worth the two known module writer work\-arounds for trying to maintain source level compatibility with both PAM implementations are: +.sp +.RS 4 +\h'-04'\(bu\h'+03'never call the conversation function with num_msg greater than one\. +.RE +.sp +.RS 4 +\h'-04'\(bu\h'+03'set up msg as doubly referenced so both types of conversation function can find the messages\. That is, make +.sp +.RS 4 +.nf + msg[n] = & (( *msg )[n]) + +.fi +.RE +.RE +.SH "RETURN VALUES" +.PP +PAM_BUF_ERR +.RS 4 +Memory buffer error\. +.RE +.PP +PAM_CONV_ERR +.RS 4 +Conversation failure\. The application should not set +\fI*resp\fR\. +.RE +.PP +PAM_SUCCESS +.RS 4 +Success\. +.RE +.SH "SEE ALSO" +.PP + +\fBpam_start\fR(3), +\fBpam_set_item\fR(3), +\fBpam_get_item\fR(3), +\fBpam_strerror\fR(3), +\fBpam\fR(8) diff --git a/doc/man/pam_conv.3.xml b/doc/man/pam_conv.3.xml new file mode 100644 index 00000000..0098ff94 --- /dev/null +++ b/doc/man/pam_conv.3.xml @@ -0,0 +1,228 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> +<refentry id='pam_conv'> + <refmeta> + <refentrytitle>pam_conv</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_conv-name"> + <refname>pam_conv</refname> + <refpurpose>PAM conversation function</refpurpose> + </refnamediv> + +<!-- body begins here --> + + <refsynopsisdiv> + <funcsynopsis id="pam_conv-synopsis"> + <funcsynopsisinfo>#include <security/pam_appl.h></funcsynopsisinfo> + </funcsynopsis> + <programlisting> +struct pam_message { + int msg_style; + const char *msg; +}; + +struct pam_response { + char *resp; + int resp_retcode; +}; + +struct pam_conv { + int (*conv)(int num_msg, const struct pam_message **msg, + struct pam_response **resp, void *appdata_ptr); + void *appdata_ptr; +}; + </programlisting> + </refsynopsisdiv> + + <refsect1 id='pam_conv-description'> + <title>DESCRIPTION</title> + <para> + The PAM library uses an application-defined callback to allow + a direct communication between a loaded module and the application. + This callback is specified by the + <emphasis>struct pam_conv</emphasis> passed to + <citerefentry> + <refentrytitle>pam_start</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> + at the start of the transaction. + </para> + <para> + When a module calls the referenced conv() function, the argument + <emphasis>appdata_ptr</emphasis> is set to the second element of + this structure. + </para> + <para> + The other arguments of a call to conv() concern the information + exchanged by module and application. That is to say, + <emphasis>num_msg</emphasis> holds the length of the array of + pointers, <emphasis>msg</emphasis>. After a successful return, the + pointer <emphasis>resp</emphasis> points to an array of pam_response + structures, holding the application supplied text. The + <emphasis>resp_retcode</emphasis> member of this struct is unused and + should be set to zero. It is the caller's responsibility to release + both, this array and the responses themselves, using + <citerefentry> + <refentrytitle>free</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>. Note, <emphasis>*resp</emphasis> is a + <emphasis>struct pam_response</emphasis> array and not an array of + pointers. + </para> + <para> + The number of responses is always equal to the + <emphasis>num_msg</emphasis> conversation function argument. + This does require that the response array is + <citerefentry> + <refentrytitle>free</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>'d after + every call to the conversation function. The index of the + responses corresponds directly to the prompt index in the + pam_message array. + </para> + <para> + On failure, the conversation function should release any resources + it has allocated, and return one of the predefined PAM error codes. + </para> + <para> + Each message can have one of four types, specified by the + <emphasis>msg_style</emphasis> member of + <emphasis>struct pam_message</emphasis>: + </para> + <variablelist> + <varlistentry> + <term>PAM_PROMPT_ECHO_OFF</term> + <listitem> + <para> + Obtain a string without echoing any text. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_PROMPT_ECHO_ON</term> + <listitem> + <para> + Obtain a string whilst echoing text. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_ERROR_MSG</term> + <listitem> + <para> + Display an error message. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_TEXT_INFO</term> + <listitem> + <para> + Display some text. + </para> + </listitem> + </varlistentry> + </variablelist> + <para> + The point of having an array of messages is that it becomes possible + to pass a number of things to the application in a single call from + the module. It can also be convenient for the application that related + things come at once: a windows based application can then present a + single form with many messages/prompts on at once. + </para> + <para> + In passing, it is worth noting that there is a descrepency between + the way Linux-PAM handles the const struct pam_message **msg + conversation function argument from the way that Solaris' PAM + (and derivitives, known to include HP/UX, are there others?) does. + Linux-PAM interprets the msg argument as entirely equivalent to the + following prototype + const struct pam_message *msg[] (which, in spirit, is consistent with + the commonly used prototypes for argv argument to the familiar main() + function: char **argv; and char *argv[]). Said another way Linux-PAM + interprets the msg argument as a pointer to an array of num_msg read + only 'struct pam_message' pointers. Solaris' PAM implementation + interprets this argument as a pointer to a pointer to an array of + num_msg pam_message structures. Fortunately, perhaps, for most + module/application developers when num_msg has a value of one these + two definitions are entirely equivalent. Unfortunately, casually + raising this number to two has led to unanticipated compatibility + problems. + </para> + <para> + For what its worth the two known module writer work-arounds for trying + to maintain source level compatibility with both PAM implementations + are: + </para> + <itemizedlist> + <listitem> + <para> + never call the conversation function with num_msg greater than one. + </para> + </listitem> + <listitem> + <para> + set up msg as doubly referenced so both types of conversation + function can find the messages. That is, make + </para> + <programlisting> + msg[n] = & (( *msg )[n]) + </programlisting> + </listitem> + </itemizedlist> + </refsect1> + + <refsect1 id="pam_conv-return_values"> + <title>RETURN VALUES</title> + <variablelist> + <varlistentry> + <term>PAM_BUF_ERR</term> + <listitem> + <para> + Memory buffer error. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_CONV_ERR</term> + <listitem> + <para> + Conversation failure. The application should not set + <emphasis>*resp</emphasis>. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + Success. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id='pam_conv-see_also'> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam_start</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_set_item</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_get_item</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_strerror</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam</refentrytitle><manvolnum>8</manvolnum> + </citerefentry> + </para> + </refsect1> +</refentry> diff --git a/doc/man/pam_end.3 b/doc/man/pam_end.3 new file mode 100644 index 00000000..10893944 --- /dev/null +++ b/doc/man/pam_end.3 @@ -0,0 +1,73 @@ +.\" Title: pam_end +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_END" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_end - termination of PAM transaction +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <security/pam_appl\.h> +.fi +.ft +.HP 12 +.BI "int pam_end(pam_handle_t\ *" "pamh" ", int\ " "pam_status" ");" +.SH "DESCRIPTION" +.PP +The +\fBpam_end\fR +function terminates the PAM transaction and is the last function an application should call in the PAM context\. Upon return the handle +\fIpamh\fR +is no longer valid and all memory associated with it will be invalid\. +.PP +The +\fIpam_status\fR +argument should be set to the value returned to the application by the last PAM library call\. +.PP +The value taken by +\fIpam_status\fR +is used as an argument to the module specific callback function, +\fBcleanup()\fR +(See +\fBpam_set_data\fR(3) +and +\fBpam_get_data\fR(3))\. In this way the module can be given notification of the pass/fail nature of the tear\-down process, and perform any last minute tasks that are appropriate to the module before it is unlinked\. This argument can be logically OR\'d with +\fIPAM_DATA_SILENT\fR +to indicate to indicate that the module should not treat the call too seriously\. It is generally used to indicate that the current closing of the library is in a +\fBfork\fR(2)ed process, and that the parent will take care of cleaning up things that exist outside of the current process space (files etc\.)\. +.PP +This function +\fIfree\fR\'s all memory for items associated with the +\fBpam_set_item\fR(3) +and +\fBpam_get_item\fR(3) +functions\. Pointers associated with such objects are not valid anymore after +\fBpam_end\fR +was called\. +.SH "RETURN VALUES" +.PP +PAM_SUCCESS +.RS 4 +Transaction was successful terminated\. +.RE +.PP +PAM_SYSTEM_ERR +.RS 4 +System error, for example a NULL pointer was submitted as PAM handle or the function was called by a module\. +.RE +.SH "SEE ALSO" +.PP + +\fBpam_get_data\fR(3), +\fBpam_set_data\fR(3), +\fBpam_start\fR(3), +\fBpam_strerror\fR(3) diff --git a/doc/man/pam_end.3.xml b/doc/man/pam_end.3.xml new file mode 100644 index 00000000..039bb3cd --- /dev/null +++ b/doc/man/pam_end.3.xml @@ -0,0 +1,122 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> + +<refentry id='pam_end'> + + <refmeta> + <refentrytitle>pam_end</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_end-name"> + <refname>pam_end</refname> + <refpurpose>termination of PAM transaction</refpurpose> + </refnamediv> + +<!-- body begins here --> + + <refsynopsisdiv> + <funcsynopsis id="pam_end-synopsis"> + <funcsynopsisinfo>#include <security/pam_appl.h></funcsynopsisinfo> + <funcprototype> + <funcdef>int <function>pam_end</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>int <parameter>pam_status</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + + <refsect1 id="pam_end-description"> + <title>DESCRIPTION</title> + <para> + The <function>pam_end</function> function terminates the PAM + transaction and is the last function an application should call + in the PAM context. Upon return the handle <emphasis>pamh</emphasis> + is no longer valid and all memory associated with it will be + invalid. + </para> + <para> + The <emphasis>pam_status</emphasis> argument should be set to + the value returned to the application by the last PAM + library call. + </para> + <para> + The value taken by <emphasis>pam_status</emphasis> is used as + an argument to the module specific callback function, + <function>cleanup()</function> + (See <citerefentry> + <refentrytitle>pam_set_data</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> and + <citerefentry> + <refentrytitle>pam_get_data</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>). In this way the module can be given notification + of the pass/fail nature of the tear-down process, and perform any + last minute tasks that are appropriate to the module before it is + unlinked. This argument can be logically OR'd with + <emphasis>PAM_DATA_SILENT</emphasis> to indicate to indicate that + the module should not treat the call too seriously. It is generally + used to indicate that the current closing of the library is in a + <citerefentry> + <refentrytitle>fork</refentrytitle><manvolnum>2</manvolnum> + </citerefentry>ed + process, and that the parent will take care of cleaning up things + that exist outside of the current process space (files etc.). + </para> + + <para> + This function <emphasis>free</emphasis>'s all memory for items + associated with the + <citerefentry> + <refentrytitle>pam_set_item</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> and + <citerefentry> + <refentrytitle>pam_get_item</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> functions. Pointers associated with such objects + are not valid anymore after <function>pam_end</function> was called. + </para> + + </refsect1> + <refsect1 id="pam_end-return_values"> + <title>RETURN VALUES</title> + <variablelist> + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + Transaction was successful terminated. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SYSTEM_ERR</term> + <listitem> + <para> + System error, for example a NULL pointer was submitted + as PAM handle or the function was called by a module. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id="pam_end-see_also"> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam_get_data</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_set_data</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_start</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_strerror</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> + </para> + </refsect1> +</refentry> diff --git a/doc/man/pam_error.3 b/doc/man/pam_error.3 new file mode 100644 index 00000000..a211e4a5 --- /dev/null +++ b/doc/man/pam_error.3 @@ -0,0 +1,74 @@ +.\" Title: pam_error +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_ERROR" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_error, pam_verror - display error messages to the user +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <security/pam_ext\.h> +.fi +.ft +.HP 14 +.BI "int pam_error(pam_handle_t\ *" "pamh" ", const\ char\ *" "fmt" ", " "\.\.\." ");" +.HP 15 +.BI "int pam_verror(pam_handle_t\ *" "pamh" ", const\ char\ *" "fmt" ", va_list\ " "args" ");" +.SH "DESCRIPTION" +.PP +The +\fBpam_error\fR +function prints error messages through the conversation function to the user\. +.PP +The +\fBpam_verror\fR +function performs the same task as +\fBpam_error()\fR +with the difference that it takes a set of arguments which have been obtained using the +\fBstdarg\fR(3) +variable argument list macros\. +.SH "RETURN VALUES" +.PP +PAM_BUF_ERR +.RS 4 +Memory buffer error\. +.RE +.PP +PAM_CONV_ERR +.RS 4 +Conversation failure\. +.RE +.PP +PAM_SUCCESS +.RS 4 +Error message was displayed\. +.RE +.PP +PAM_SYSTEM_ERR +.RS 4 +System error\. +.RE +.SH "SEE ALSO" +.PP + +\fBpam_info\fR(3), +\fBpam_vinfo\fR(3), +\fBpam_prompt\fR(3), +\fBpam_vprompt\fR(3), +\fBpam\fR(8) +.SH "STANDARDS" +.PP +The +\fBpam_error\fR +and +\fBpam_verror\fR +functions are Linux\-PAM extensions\. diff --git a/doc/man/pam_error.3.xml b/doc/man/pam_error.3.xml new file mode 100644 index 00000000..de167f2c --- /dev/null +++ b/doc/man/pam_error.3.xml @@ -0,0 +1,121 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> + +<refentry id="pam_error"> + + <refmeta> + <refentrytitle>pam_error</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_error-name"> + <refname>pam_error</refname> + <refname>pam_verror</refname> + <refpurpose>display error messages to the user</refpurpose> + </refnamediv> + +<!-- body begins here --> + + <refsynopsisdiv id="pam_error-synopsis"> + <funcsynopsis> + <funcsynopsisinfo>#include <security/pam_ext.h></funcsynopsisinfo> + <funcprototype> + <funcdef>int <function>pam_error</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>const char *<parameter>fmt</parameter></paramdef> + <paramdef><parameter>...</parameter></paramdef> + </funcprototype> + <funcprototype> + <funcdef>int <function>pam_verror</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>const char *<parameter>fmt</parameter></paramdef> + <paramdef>va_list <parameter>args</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + <refsect1 id='pam_error-description'> + <title>DESCRIPTION</title> + <para> + The <function>pam_error</function> function prints error messages + through the conversation function to the user. + </para> + <para> + The <function>pam_verror</function> function performs the same + task as <function>pam_error()</function> with the difference + that it takes a set of arguments which have been obtained using + the <citerefentry> + <refentrytitle>stdarg</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> variable argument list macros. + </para> + </refsect1> + <refsect1 id="pam_error-return_values"> + <title>RETURN VALUES</title> + <variablelist> + <varlistentry> + <term>PAM_BUF_ERR</term> + <listitem> + <para> + Memory buffer error. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_CONV_ERR</term> + <listitem> + <para> + Conversation failure. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + Error message was displayed. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SYSTEM_ERR</term> + <listitem> + <para> + System error. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id='pam_error-see_also'> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam_info</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_vinfo</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_prompt</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_vprompt</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam</refentrytitle><manvolnum>8</manvolnum> + </citerefentry> + </para> + </refsect1> + + <refsect1 id='pam_error-standards'> + <title>STANDARDS</title> + <para> + The <function>pam_error</function> and <function>pam_verror</function> + functions are Linux-PAM extensions. + </para> + </refsect1> + +</refentry> diff --git a/doc/man/pam_fail_delay.3 b/doc/man/pam_fail_delay.3 new file mode 100644 index 00000000..865659ed --- /dev/null +++ b/doc/man/pam_fail_delay.3 @@ -0,0 +1,134 @@ +.\" Title: pam_fail_delay +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_FAIL_DELAY" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_fail_delay - request a delay on failure +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <security/pam_appl\.h> +.fi +.ft +.HP 19 +.BI "int pam_fail_delay(pam_handle_t\ *" "pamh" ", unsigned\ int\ " "usec" ");" +.SH "DESCRIPTION" +.PP +The +\fBpam_fail_delay\fR +function provides a mechanism by which an application or module can suggest a minimum delay of +\fIusec\fR +micro\-seconds\. The function keeps a record of the longest time requested with this function\. Should +\fBpam_authenticate\fR(3) +fail, the failing return to the application is delayed by an amount of time randomly distributed (by up to 25%) about this longest value\. +.PP +Independent of success, the delay time is reset to its zero default value when the PAM service module returns control to the application\. The delay occurs +\fIafter\fR +all authentication modules have been called, but +\fIbefore\fR +control is returned to the service application\. +.PP +When using this function the programmer should check if it is available with: +.sp +.RS 4 +.nf +#ifdef HAVE_PAM_FAIL_DELAY + \.\.\.\. +#endif /* HAVE_PAM_FAIL_DELAY */ + +.fi +.RE +.PP +For applications written with a single thread that are event driven in nature, generating this delay may be undesirable\. Instead, the application may want to register the delay in some other way\. For example, in a single threaded server that serves multiple authentication requests from a single event loop, the application might want to simply mark a given connection as blocked until an application timer expires\. For this reason the delay function can be changed with the +\fIPAM_FAIL_DELAY\fR +item\. It can be queried and set with +\fBpam_get_item\fR(3) +and +\fBpam_set_item \fR(3) +respectively\. The value used to set it should be a function pointer of the following prototype: +.sp +.RS 4 +.nf +void (*delay_fn)(int retval, unsigned usec_delay, void *appdata_ptr); + +.fi +.RE +.sp +The arguments being the +\fIretval\fR +return code of the module stack, the +\fIusec_delay\fR +micro\-second delay that libpam is requesting and the +\fIappdata_ptr\fR +that the application has associated with the current +\fIpamh\fR\. This last value was set by the application when it called +\fBpam_start\fR(3) +or explicitly with +\fBpam_set_item\fR(3)\. Note, if PAM_FAIL_DELAY item is unset (or set to NULL), then no delay will be performed\. +.SH "RATIONALE" +.PP +It is often possible to attack an authentication scheme by exploiting the time it takes the scheme to deny access to an applicant user\. In cases of +\fIshort\fR +timeouts, it may prove possible to attempt a +\fIbrute force\fR +dictionary attack \-\- with an automated process, the attacker tries all possible passwords to gain access to the system\. In other cases, where individual failures can take measurable amounts of time (indicating the nature of the failure), an attacker can obtain useful information about the authentication process\. These latter attacks make use of procedural delays that constitute a +\fIcovert channel\fR +of useful information\. +.PP +To minimize the effectiveness of such attacks, it is desirable to introduce a random delay in a failed authentication process\. Preferable this value should be set by the application or a special PAM module\. Standard PAM modules should not modify the delay unconditional\. +.SH "EXAMPLE" +.PP +For example, a login application may require a failure delay of roughly 3 seconds\. It will contain the following code: +.sp +.RS 4 +.nf + pam_fail_delay (pamh, 3000000 /* micro\-seconds */ ); + pam_authenticate (pamh, 0); + +.fi +.RE +.PP +if the modules do not request a delay, the failure delay will be between 2\.25 and 3\.75 seconds\. +.PP +However, the modules, invoked in the authentication process, may also request delays: +.sp +.RS 4 +.nf +module #1: pam_fail_delay (pamh, 2000000); +module #2: pam_fail_delay (pamh, 4000000); + +.fi +.RE +.PP +in this case, it is the largest requested value that is used to compute the actual failed delay: here between 3 and 5 seconds\. +.SH "RETURN VALUES" +.PP +PAM_SUCCESS +.RS 4 +Delay was successful adjusted\. +.RE +.PP +PAM_SYSTEM_ERR +.RS 4 +A NULL pointer was submitted as PAM handle\. +.RE +.SH "SEE ALSO" +.PP + +\fBpam_start\fR(3), +\fBpam_get_item\fR(3), +\fBpam_strerror\fR(3) +.SH "STANDARDS" +.PP +The +\fBpam_fail_delay\fR +function is an Linux\-PAM extension\. diff --git a/doc/man/pam_fail_delay.3.xml b/doc/man/pam_fail_delay.3.xml new file mode 100644 index 00000000..a101cf39 --- /dev/null +++ b/doc/man/pam_fail_delay.3.xml @@ -0,0 +1,202 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> + +<refentry id="pam_fail_delay"> + + <refmeta> + <refentrytitle>pam_fail_delay</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_fail_delay-name"> + <refname>pam_fail_delay</refname> + <refpurpose>request a delay on failure</refpurpose> + </refnamediv> + +<!-- body begins here --> + + <refsynopsisdiv> + <funcsynopsis id="pam_fail_delay-synopsis"> + <funcsynopsisinfo>#include <security/pam_appl.h></funcsynopsisinfo> + <funcprototype> + <funcdef>int <function>pam_fail_delay</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>unsigned int <parameter>usec</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + <refsect1 id='pam_fail_delay-description'> + <title>DESCRIPTION</title> + <para> + The <function>pam_fail_delay</function> function provides a + mechanism by which an application or module can suggest a minimum + delay of <emphasis>usec</emphasis> micro-seconds. The + function keeps a record of the longest time requested with this + function. Should + <citerefentry> + <refentrytitle>pam_authenticate</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> fail, the failing return to the application is + delayed by an amount of time randomly distributed (by up to 25%) + about this longest value. + </para> + <para> + Independent of success, the delay time is reset to its zero + default value when the PAM service module returns control to + the application. The delay occurs <emphasis>after</emphasis> all + authentication modules have been called, but <emphasis>before</emphasis> + control is returned to the service application. + </para> + <para> + When using this function the programmer should check if it is + available with: + </para> + <programlisting> +#ifdef HAVE_PAM_FAIL_DELAY + .... +#endif /* HAVE_PAM_FAIL_DELAY */ + </programlisting> + + <para> + For applications written with a single thread that are event + driven in nature, generating this delay may be undesirable. + Instead, the application may want to register the delay in some + other way. For example, in a single threaded server that serves + multiple authentication requests from a single event loop, the + application might want to simply mark a given connection as + blocked until an application timer expires. For this reason + the delay function can be changed with the + <emphasis>PAM_FAIL_DELAY</emphasis> item. It can be queried and + set with + <citerefentry> + <refentrytitle>pam_get_item</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> + and + <citerefentry> + <refentrytitle>pam_set_item </refentrytitle><manvolnum>3</manvolnum> + </citerefentry> respectively. The value used to set it should be + a function pointer of the following prototype: + <programlisting> +void (*delay_fn)(int retval, unsigned usec_delay, void *appdata_ptr); + </programlisting> + The arguments being the <emphasis>retval</emphasis> return code + of the module stack, the <emphasis>usec_delay</emphasis> + micro-second delay that libpam is requesting and the + <emphasis>appdata_ptr</emphasis> that the application has associated + with the current <emphasis>pamh</emphasis>. This last value was set + by the application when it called + <citerefentry> + <refentrytitle>pam_start</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> or explicitly with + <citerefentry> + <refentrytitle>pam_set_item</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>. + Note, if PAM_FAIL_DELAY item is unset (or set to NULL), then no delay + will be performed. + </para> + </refsect1> + + <refsect1 id='pam_fail_delay-rationale'> + <title>RATIONALE</title> + <para> + It is often possible to attack an authentication scheme by exploiting + the time it takes the scheme to deny access to an applicant user. In + cases of <emphasis>short</emphasis> timeouts, it may prove possible + to attempt a <emphasis>brute force</emphasis> dictionary attack -- + with an automated process, the attacker tries all possible passwords + to gain access to the system. In other cases, where individual + failures can take measurable amounts of time (indicating the nature + of the failure), an attacker can obtain useful information about the + authentication process. These latter attacks make use of procedural + delays that constitute a <emphasis>covert channel</emphasis> + of useful information. + </para> + <para> + To minimize the effectiveness of such attacks, it is desirable to + introduce a random delay in a failed authentication process. + Preferable this value should be set by the application or a special + PAM module. Standard PAM modules should not modify the delay + unconditional. + </para> + </refsect1> + + <refsect1 id='pam_fail_delay-example'> + <title>EXAMPLE</title> + <para> + For example, a login application may require a failure delay of + roughly 3 seconds. It will contain the following code: + </para> + <programlisting> + pam_fail_delay (pamh, 3000000 /* micro-seconds */ ); + pam_authenticate (pamh, 0); + </programlisting> + + <para> + if the modules do not request a delay, the failure delay will be + between 2.25 and 3.75 seconds. + </para> + + <para> + However, the modules, invoked in the authentication process, may + also request delays: + </para> + + <programlisting> +module #1: pam_fail_delay (pamh, 2000000); +module #2: pam_fail_delay (pamh, 4000000); + </programlisting> + + <para> + in this case, it is the largest requested value that is used to + compute the actual failed delay: here between 3 and 5 seconds. + </para> + </refsect1> + + <refsect1 id='pam_fail_delay-return_values'> + <title>RETURN VALUES</title> + <variablelist> + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + Delay was successful adjusted. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SYSTEM_ERR</term> + <listitem> + <para> + A NULL pointer was submitted as PAM handle. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id='pam_fail_delay-see_also'> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam_start</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_get_item</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_strerror</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> + </para> + </refsect1> + + <refsect1 id='pam_fail_delay-standards'> + <title>STANDARDS</title> + <para> + The <function>pam_fail_delay</function> function is an + Linux-PAM extension. + </para> + </refsect1> + +</refentry> diff --git a/doc/man/pam_get_data.3 b/doc/man/pam_get_data.3 new file mode 100644 index 00000000..3364eafe --- /dev/null +++ b/doc/man/pam_get_data.3 @@ -0,0 +1,66 @@ +.\" Title: pam_get_data +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_GET_DATA" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_get_data - get module internal data +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <security/pam_modules\.h> +.fi +.ft +.HP 17 +.BI "int pam_get_data(const\ pam_handle_t\ *" "pamh" ", const\ char\ *" "module_data_name" ", const\ void\ **" "data" ");" +.SH "DESCRIPTION" +.PP +This function together with the +\fBpam_set_data\fR(3) +function is useful to manage module\-specific data meaningful only to the calling PAM module\. +.PP +The +\fBpam_get_data\fR +function looks up the object associated with the (hopefully) unique string +\fImodule_data_name\fR +in the PAM context specified by the +\fIpamh\fR +argument\. A successful call to +\fBpam_get_data\fR +will result in +\fIdata\fR +pointing to the object\. Note, this data is +\fInot\fR +a copy and should be treated as +\fIconstant\fR +by the module\. +.SH "RETURN VALUES" +.PP +PAM_SUCCESS +.RS 4 +Data was successful retrieved\. +.RE +.PP +PAM_SYSTEM_ERR +.RS 4 +A NULL pointer was submitted as PAM handle or the function was called by an application\. +.RE +.PP +PAM_NO_MODULE_DATA +.RS 4 +Module data not found or there is an entry, but it has the value NULL\. +.RE +.SH "SEE ALSO" +.PP + +\fBpam_end\fR(3), +\fBpam_set_data\fR(3), +\fBpam_strerror\fR(3) diff --git a/doc/man/pam_get_data.3.xml b/doc/man/pam_get_data.3.xml new file mode 100644 index 00000000..e84e5a4c --- /dev/null +++ b/doc/man/pam_get_data.3.xml @@ -0,0 +1,108 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> + +<refentry id='pam_get_data'> + + <refmeta> + <refentrytitle>pam_get_data</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id='pam_get_data-name'> + <refname>pam_get_data</refname> + <refpurpose> + get module internal data + </refpurpose> + </refnamediv> + + +<!-- body begins here --> + + <refsynopsisdiv> + + <funcsynopsis id="pam_get_data-synopsis"> + <funcsynopsisinfo>#include <security/pam_modules.h></funcsynopsisinfo> + <funcprototype> + <funcdef>int <function>pam_get_data</function></funcdef> + <paramdef>const pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>const char *<parameter>module_data_name</parameter></paramdef> + <paramdef>const void **<parameter>data</parameter></paramdef> + </funcprototype> + </funcsynopsis> + + </refsynopsisdiv> + + + <refsect1 id="pam_get_data-description"> + <title>DESCRIPTION</title> + <para> + This function together with the + <citerefentry> + <refentrytitle>pam_set_data</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> function + is useful to manage module-specific data meaningful only to + the calling PAM module. + </para> + <para> + The <function>pam_get_data</function> function looks up the + object associated with the (hopefully) unique string + <emphasis>module_data_name</emphasis> in the PAM context + specified by the <emphasis>pamh</emphasis> argument. + A successful call to + <function>pam_get_data</function> will result in + <emphasis>data</emphasis> pointing to the object. Note, + this data is <emphasis>not</emphasis> a copy and should be + treated as <emphasis>constant</emphasis> by the module. + </para> + </refsect1> + + <refsect1 id="pam_get_data-return_values"> + <title>RETURN VALUES</title> + <variablelist> + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + Data was successful retrieved. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SYSTEM_ERR</term> + <listitem> + <para> + A NULL pointer was submitted as PAM handle or the + function was called by an application. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_NO_MODULE_DATA</term> + <listitem> + <para> + Module data not found or there is an entry, but it has + the value NULL. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id="pam_get_data-see_also"> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam_end</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_set_data</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_strerror</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> + </para> + </refsect1> + +</refentry> diff --git a/doc/man/pam_get_item.3 b/doc/man/pam_get_item.3 new file mode 100644 index 00000000..550cafcd --- /dev/null +++ b/doc/man/pam_get_item.3 @@ -0,0 +1,173 @@ +.\" Title: pam_get_item +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_GET_ITEM" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_get_item - getting PAM informations +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <security/pam_modules\.h> +.fi +.ft +.HP 17 +.BI "int pam_get_item(const\ pam_handle_t\ *" "pamh" ", int\ " "item_type" ", const\ void\ **" "item" ");" +.SH "DESCRIPTION" +.PP +The +\fBpam_get_item\fR +function allows applications and PAM service modules to access and retrieve PAM informations of +\fIitem_type\fR\. Upon successful return, +\fIitem\fR +contains a pointer to the value of the corresponding item\. Note, this is a pointer to the +\fIactual\fR +data and should +\fBnot\fR +be +\fIfree()\fR\'ed or over\-written! The following values are supported for +\fIitem_type\fR: +.PP +PAM_SERVICE +.RS 4 +The service name (which identifies that PAM stack that the PAM functions will use to authenticate the program)\. +.RE +.PP +PAM_USER +.RS 4 +The username of the entity under whose identity service will be given\. That is, following authentication, +\fIPAM_USER\fR +identifies the local entity that gets to use the service\. Note, this value can be mapped from something (eg\., "anonymous") to something else (eg\. "guest119") by any module in the PAM stack\. As such an application should consult the value of +\fIPAM_USER\fR +after each call to a PAM function\. +.RE +.PP +PAM_USER_PROMPT +.RS 4 +The string used when prompting for a user\'s name\. The default value for this string is a localized version of "login: "\. +.RE +.PP +PAM_TTY +.RS 4 +The terminal name: prefixed by +\fI/dev/\fR +if it is a device file; for graphical, X\-based, applications the value for this item should be the +\fI$DISPLAY\fR +variable\. +.RE +.PP +PAM_RUSER +.RS 4 +The requesting user name: local name for a locally requesting user or a remote user name for a remote requesting user\. +.sp +Generally an application or module will attempt to supply the value that is most strongly authenticated (a local account before a remote one\. The level of trust in this value is embodied in the actual authentication stack associated with the application, so it is ultimately at the discretion of the system administrator\. +.sp + +\fIPAM_RUSER@PAM_RHOST\fR +should always identify the requesting user\. In some cases, +\fIPAM_RUSER\fR +may be NULL\. In such situations, it is unclear who the requesting entity is\. +.RE +.PP +PAM_RHOST +.RS 4 +The requesting hostname (the hostname of the machine from which the +\fIPAM_RUSER\fR +entity is requesting service)\. That is +\fIPAM_RUSER@PAM_RHOST\fR +does identify the requesting user\. In some applications, +\fIPAM_RHOST\fR +may be NULL\. In such situations, it is unclear where the authentication request is originating from\. +.RE +.PP +PAM_AUTHTOK +.RS 4 +The authentication token (often a password)\. This token should be ignored by all module functions besides +\fBpam_sm_authenticate\fR(3) +and +\fBpam_sm_chauthtok\fR(3)\. In the former function it is used to pass the most recent authentication token from one stacked module to another\. In the latter function the token is used for another purpose\. It contains the currently active authentication token\. +.RE +.PP +PAM_OLDAUTHTOK +.RS 4 +The old authentication token\. This token should be ignored by all module functions except +\fBpam_sm_chauthtok\fR(3)\. +.RE +.PP +PAM_CONV +.RS 4 +The pam_conv structure\. See +\fBpam_conv\fR(3)\. +.RE +.PP +The following additional items are specific to Linux\-PAM and should not be used in portable applications: +.PP +PAM_FAIL_DELAY +.RS 4 +A function pointer to redirect centrally managed failure delays\. See +\fBpam_fail_delay\fR(3)\. +.RE +.PP +PAM_XDISPLAY +.RS 4 +The name of the X display\. For graphical, X\-based applications the value for this item should be the +\fI$DISPLAY\fR +variable\. This value may be used independently of +\fIPAM_TTY\fR +for passing the name of the display\. +.RE +.PP +PAM_XAUTHDATA +.RS 4 +A pointer to a structure containing the X authentication data required to make a connection to the display specified by +\fIPAM_XDISPLAY\fR, if such information is necessary\. See +\fBpam_xauth_data\fR(3)\. +.RE +.PP +If a service module wishes to obtain the name of the user, it should not use this function, but instead perform a call to +\fBpam_get_user\fR(3)\. +.PP +Only a service module is privileged to read the authentication tokens, PAM_AUTHTOK and PAM_OLDAUTHTOK\. +.SH "RETURN VALUES" +.PP +PAM_BAD_ITEM +.RS 4 +The application attempted to set an undefined or inaccessible item\. +.RE +.PP +PAM_BUF_ERR +.RS 4 +Memory buffer error\. +.RE +.PP +PAM_PERM_DENIED +.RS 4 +The value of +\fIitem\fR +was NULL\. +.RE +.PP +PAM_SUCCESS +.RS 4 +Data was successful updated\. +.RE +.PP +PAM_SYSTEM_ERR +.RS 4 +The +\fIpam_handle_t\fR +passed as first argument was invalid\. +.RE +.SH "SEE ALSO" +.PP + +\fBpam_set_item\fR(3), +\fBpam_strerror\fR(3) diff --git a/doc/man/pam_get_item.3.xml b/doc/man/pam_get_item.3.xml new file mode 100644 index 00000000..d07862e0 --- /dev/null +++ b/doc/man/pam_get_item.3.xml @@ -0,0 +1,143 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" +[ +<!-- +<!ENTITY accessconf SYSTEM "pam_item_types_std.inc.xml"> +<!ENTITY accessconf SYSTEM "pam_item_types_ext.inc.xml"> +--> +]> + +<refentry id='pam_get_item'> + + <refmeta> + <refentrytitle>pam_get_item</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id='pam_get_item-name'> + <refname>pam_get_item</refname> + <refpurpose> + getting PAM informations + </refpurpose> + </refnamediv> + + +<!-- body begins here --> + + <refsynopsisdiv> + + <funcsynopsis id="pam_get_item-synopsis"> + <funcsynopsisinfo>#include <security/pam_modules.h></funcsynopsisinfo> + <funcprototype> + <funcdef>int <function>pam_get_item</function></funcdef> + <paramdef>const pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>int <parameter>item_type</parameter></paramdef> + <paramdef>const void **<parameter>item</parameter></paramdef> + </funcprototype> + </funcsynopsis> + + </refsynopsisdiv> + + + <refsect1 id="pam_get_item-description"> + <title>DESCRIPTION</title> + <para> + The <function>pam_get_item</function> function allows applications + and PAM service modules to access and retrieve PAM informations + of <emphasis>item_type</emphasis>. Upon successful return, + <emphasis>item</emphasis> contains a pointer to the value of the + corresponding item. Note, this is a pointer to the + <emphasis>actual</emphasis> data and should + <emphasis remap="B">not</emphasis> be <emphasis>free()</emphasis>'ed or + over-written! The following values are supported for + <emphasis>item_type</emphasis>: + </para> + + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_item_types_std.inc.xml"/> + + <para> + The following additional items are specific to Linux-PAM and should not be used in + portable applications: + </para> + + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_item_types_ext.inc.xml"/> + + <para> + If a service module wishes to obtain the name of the user, + it should not use this function, but instead perform a call to + <citerefentry> + <refentrytitle>pam_get_user</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>. + </para> + <para> + Only a service module is privileged to read the + authentication tokens, PAM_AUTHTOK and PAM_OLDAUTHTOK. + </para> + + </refsect1> + + <refsect1 id="pam_get_item-return_values"> + <title>RETURN VALUES</title> + <variablelist> + <varlistentry> + <term>PAM_BAD_ITEM</term> + <listitem> + <para> + The application attempted to set an undefined or inaccessible + item. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_BUF_ERR</term> + <listitem> + <para> + Memory buffer error. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_PERM_DENIED</term> + <listitem> + <para> + The value of <emphasis>item</emphasis> was NULL. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + Data was successful updated. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SYSTEM_ERR</term> + <listitem> + <para> + The <emphasis>pam_handle_t</emphasis> passed as first + argument was invalid. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id="pam_get_item-see_also"> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam_set_item</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_strerror</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> + </para> + </refsect1> + +</refentry> diff --git a/doc/man/pam_get_user.3 b/doc/man/pam_get_user.3 new file mode 100644 index 00000000..c4333cc9 --- /dev/null +++ b/doc/man/pam_get_user.3 @@ -0,0 +1,86 @@ +.\" Title: pam_get_user +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_GET_USER" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_get_user - get user name +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <security/pam_modules\.h> +.fi +.ft +.HP 17 +.BI "int pam_get_user(const\ pam_handle_t\ *" "pamh" ", const\ char\ **" "user" ", const\ char\ *" "prompt" ");" +.SH "DESCRIPTION" +.PP +The +\fBpam_get_user\fR +function returns the name of the user specified by +\fBpam_start\fR(3)\. If no user was specified it what +\fBpam_get_item (pamh, PAM_USER, \.\.\. );\fR +would have returned\. If this is NULL it obtains the username via the +\fBpam_conv\fR(3) +mechanism, it prompts the user with the first non\-NULL string in the following list: +.sp +.RS 4 +\h'-04'\(bu\h'+03'The +\fIprompt\fR +argument passed to the function\. +.RE +.sp +.RS 4 +\h'-04'\(bu\h'+03'What is returned by pam_get_item (pamh, PAM_USER_PROMPT, \.\.\. ); +.RE +.sp +.RS 4 +\h'-04'\(bu\h'+03'The default prompt: "login: " +.RE +.PP +By whatever means the username is obtained, a pointer to it is returned as the contents of +\fI*user\fR\. Note, this memory should +\fBnot\fR +be +\fIfree()\fR\'d or +\fImodified\fR +by the module\. +.PP +This function sets the +\fIPAM_USER\fR +item associated with the +\fBpam_set_item\fR(3) +and +\fBpam_get_item\fR(3) +functions\. +.SH "RETURN VALUES" +.PP +PAM_SUCCESS +.RS 4 +User name was successful retrieved\. +.RE +.PP +PAM_SYSTEM_ERR +.RS 4 +A NULL pointer was submitted\. +.RE +.PP +PAM_CONV_ERR +.RS 4 +The conversation method supplied by the application failed to obtain the username\. +.RE +.SH "SEE ALSO" +.PP + +\fBpam_end\fR(3), +\fBpam_get_item\fR(3), +\fBpam_set_item\fR(3), +\fBpam_strerror\fR(3) diff --git a/doc/man/pam_get_user.3.xml b/doc/man/pam_get_user.3.xml new file mode 100644 index 00000000..ff8be694 --- /dev/null +++ b/doc/man/pam_get_user.3.xml @@ -0,0 +1,139 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> + +<refentry id='pam_get_user'> + + <refmeta> + <refentrytitle>pam_get_user</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id='pam_get_user-name'> + <refname>pam_get_user</refname> + <refpurpose> + get user name + </refpurpose> + </refnamediv> + + +<!-- body begins here --> + + <refsynopsisdiv> + + <funcsynopsis id="pam_get_user-synopsis"> + <funcsynopsisinfo>#include <security/pam_modules.h></funcsynopsisinfo> + <funcprototype> + <funcdef>int <function>pam_get_user</function></funcdef> + <paramdef>const pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>const char **<parameter>user</parameter></paramdef> + <paramdef>const char *<parameter>prompt</parameter></paramdef> + </funcprototype> + </funcsynopsis> + + </refsynopsisdiv> + + + <refsect1 id="pam_get_user-description"> + <title>DESCRIPTION</title> + <para> + The <function>pam_get_user</function> function returns the + name of the user specified by + <citerefentry> + <refentrytitle>pam_start</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>. If no user was specified it what + <function>pam_get_item (pamh, PAM_USER, ... );</function> would + have returned. If this is NULL it obtains the username via the + <citerefentry> + <refentrytitle>pam_conv</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> mechanism, it prompts the user with the first + non-NULL string in the following list: + </para> + + <itemizedlist> + <listitem> + <para> + The <emphasis>prompt</emphasis> argument passed to the function. + </para> + </listitem> + <listitem> + <para> + What is returned by pam_get_item (pamh, PAM_USER_PROMPT, ... ); + </para> + </listitem> + <listitem> + <para> + The default prompt: "login: " + </para> + </listitem> + </itemizedlist> + <para> + By whatever means the username is obtained, a pointer to it is + returned as the contents of <emphasis>*user</emphasis>. Note, + this memory should <emphasis remap="B">not</emphasis> be + <emphasis>free()</emphasis>'d or <emphasis>modified</emphasis> + by the module. + </para> + <para> + This function sets the <emphasis>PAM_USER</emphasis> item + associated with the + <citerefentry> + <refentrytitle>pam_set_item</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> and + <citerefentry> + <refentrytitle>pam_get_item</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> functions. + </para> + </refsect1> + + <refsect1 id="pam_get_user-return_values"> + <title>RETURN VALUES</title> + <variablelist> + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + User name was successful retrieved. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SYSTEM_ERR</term> + <listitem> + <para> + A NULL pointer was submitted. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_CONV_ERR</term> + <listitem> + <para> + The conversation method supplied by the + application failed to obtain the username. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id="pam_get_user-see_also"> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam_end</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_get_item</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_set_item</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_strerror</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> + </para> + </refsect1> + +</refentry> diff --git a/doc/man/pam_getenv.3 b/doc/man/pam_getenv.3 new file mode 100644 index 00000000..f5ab262d --- /dev/null +++ b/doc/man/pam_getenv.3 @@ -0,0 +1,43 @@ +.\" Title: pam_getenv +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_GETENV" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_getenv - get a PAM environment variable +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <security/pam_appl\.h> +.fi +.ft +.HP 23 +.BI "const char *pam_getenv(pam_handle_t\ *" "pamh" ", const\ char\ *" "name" ");" +.SH "DESCRIPTION" +.PP +The +\fBpam_getenv\fR +function searches the PAM environment list as associated with the handle +\fIpamh\fR +for a string that matches the string pointed to by +\fIname\fR\. The return values are of the form: "\fIname=value\fR"\. +.SH "RETURN VALUES" +.PP +The +\fBpam_getenv\fR +function returns NULL on failure\. +.SH "SEE ALSO" +.PP + +\fBpam_start\fR(3), +\fBpam_getenvlist\fR(3), +\fBpam_putenv\fR(3), +\fBpam\fR(8) diff --git a/doc/man/pam_getenv.3.xml b/doc/man/pam_getenv.3.xml new file mode 100644 index 00000000..e78aa3c2 --- /dev/null +++ b/doc/man/pam_getenv.3.xml @@ -0,0 +1,66 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> +<refentry id='pam_getenv'> + <refmeta> + <refentrytitle>pam_getenv</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_getenv-name"> + <refname>pam_getenv</refname> + <refpurpose>get a PAM environment variable</refpurpose> + </refnamediv> + +<!-- body begins here --> + + <refsynopsisdiv> + <funcsynopsis id='pam_getenv-synopsis'> + <funcsynopsisinfo>#include <security/pam_appl.h></funcsynopsisinfo> + <funcprototype> + <funcdef>const char *<function>pam_getenv</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>const char *<parameter>name</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + + <refsect1 id='pam_getenv-description'> + <title>DESCRIPTION</title> + <para> + The <function>pam_getenv</function> function searches the + PAM environment list as associated with the handle + <emphasis>pamh</emphasis> for a string that matches the string + pointed to by <emphasis>name</emphasis>. The return values are + of the form: "<emphasis>name=value</emphasis>". + </para> + </refsect1> + + <refsect1 id="pam_getenv-return_values"> + <title>RETURN VALUES</title> + <para> + The <function>pam_getenv</function> function returns NULL + on failure. + </para> + </refsect1> + + <refsect1 id='pam_getenv-see_also'> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam_start</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_getenvlist</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_putenv</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam</refentrytitle><manvolnum>8</manvolnum> + </citerefentry> + </para> + </refsect1> +</refentry> diff --git a/doc/man/pam_getenvlist.3 b/doc/man/pam_getenvlist.3 new file mode 100644 index 00000000..2c74f581 --- /dev/null +++ b/doc/man/pam_getenvlist.3 @@ -0,0 +1,50 @@ +.\" Title: pam_getenvlist +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_GETENVLIST" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_getenvlist - getting the PAM environment +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <security/pam_appl\.h> +.fi +.ft +.HP 22 +.BI "char **pam_getenvlist(pam_handle_t\ *" "pamh" ");" +.SH "DESCRIPTION" +.PP +The +\fBpam_getenvlist\fR +function returns a complete copy of the PAM environment as associated with the handle +\fIpamh\fR\. The PAM environment variables represent the contents of the regular environment variables of the authenticated user when service is granted\. +.PP +The format of the memory is a malloc()\'d array of char pointers, the last element of which is set to NULL\. Each of the non\-NULL entries in this array point to a NUL terminated and malloc()\'d char string of the form: "\fIname=value\fR"\. +.PP +It should be noted that this memory will never be free()\'d by libpam\. Once obtained by a call to +\fBpam_getenvlist\fR, it is the responsibility of the calling application to free() this memory\. +.PP +It is by design, and not a coincidence, that the format and contents of the returned array matches that required for the third argument of the +\fBexecle\fR(3) +function call\. +.SH "RETURN VALUES" +.PP +The +\fBpam_getenvlist\fR +function returns NULL on failure\. +.SH "SEE ALSO" +.PP + +\fBpam_start\fR(3), +\fBpam_getenv\fR(3), +\fBpam_putenv\fR(3), +\fBpam\fR(8) diff --git a/doc/man/pam_getenvlist.3.xml b/doc/man/pam_getenvlist.3.xml new file mode 100644 index 00000000..1c29b737 --- /dev/null +++ b/doc/man/pam_getenvlist.3.xml @@ -0,0 +1,85 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> +<refentry id='pam_getenvlist'> + <refmeta> + <refentrytitle>pam_getenvlist</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_getenvlist-name"> + <refname>pam_getenvlist</refname> + <refpurpose>getting the PAM environment</refpurpose> + </refnamediv> + +<!-- body begins here --> + + <refsynopsisdiv> + <funcsynopsis id='pam_getenvlist-synopsis'> + <funcsynopsisinfo>#include <security/pam_appl.h></funcsynopsisinfo> + <funcprototype> + <funcdef>char **<function>pam_getenvlist</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + + <refsect1 id='pam_getenvlist-description'> + <title>DESCRIPTION</title> + <para> + The <function>pam_getenvlist</function> function returns a complete + copy of the PAM environment as associated with the handle + <emphasis>pamh</emphasis>. The PAM environment variables + represent the contents of the regular environment variables of the + authenticated user when service is granted. + </para> + <para> + The format of the memory is a malloc()'d array of char pointers, + the last element of which is set to NULL. Each of the non-NULL + entries in this array point to a NUL terminated and malloc()'d + char string of the form: "<emphasis>name=value</emphasis>". + </para> + <para> + It should be noted that this memory will never be free()'d by + libpam. Once obtained by a call to + <function>pam_getenvlist</function>, it is the responsibility of + the calling application to free() this memory. + </para> + <para> + It is by design, and not a coincidence, that the format and contents + of the returned array matches that required for the third argument of + the + <citerefentry> + <refentrytitle>execle</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> function call. + </para> + </refsect1> + + <refsect1 id="pam_getenvlist-return_values"> + <title>RETURN VALUES</title> + <para> + The <function>pam_getenvlist</function> function returns NULL + on failure. + </para> + </refsect1> + + <refsect1 id='pam_getenvlist-see_also'> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam_start</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_getenv</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_putenv</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam</refentrytitle><manvolnum>8</manvolnum> + </citerefentry> + </para> + </refsect1> +</refentry> diff --git a/doc/man/pam_info.3 b/doc/man/pam_info.3 new file mode 100644 index 00000000..7fb5e28b --- /dev/null +++ b/doc/man/pam_info.3 @@ -0,0 +1,70 @@ +.\" Title: pam_info +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_INFO" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_info, pam_vinfo - display messages to the user +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <security/pam_ext\.h> +.fi +.ft +.HP 13 +.BI "int pam_info(pam_handle_t\ *" "pamh" ", const\ char\ *" "fmt" ", " "\.\.\." ");" +.HP 14 +.BI "int pam_vinfo(pam_handle_t\ *" "pamh" ", const\ char\ *" "fmt" ", va_list\ " "args" ");" +.SH "DESCRIPTION" +.PP +The +\fBpam_info\fR +function prints messages through the conversation function to the user\. +.PP +The +\fBpam_vinfo\fR +function performs the same task as +\fBpam_info()\fR +with the difference that it takes a set of arguments which have been obtained using the +\fBstdarg\fR(3) +variable argument list macros\. +.SH "RETURN VALUES" +.PP +PAM_BUF_ERR +.RS 4 +Memory buffer error\. +.RE +.PP +PAM_CONV_ERR +.RS 4 +Conversation failure\. +.RE +.PP +PAM_SUCCESS +.RS 4 +Transaction was successful created\. +.RE +.PP +PAM_SYSTEM_ERR +.RS 4 +System error\. +.RE +.SH "SEE ALSO" +.PP + +\fBpam\fR(8) +.SH "STANDARDS" +.PP +The +\fBpam_info\fR +and +\fBpam_vinfo\fR +functions are Linux\-PAM extensions\. diff --git a/doc/man/pam_info.3.xml b/doc/man/pam_info.3.xml new file mode 100644 index 00000000..88e671c7 --- /dev/null +++ b/doc/man/pam_info.3.xml @@ -0,0 +1,109 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> + +<refentry id="pam_info"> + + <refmeta> + <refentrytitle>pam_info</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_info-name"> + <refname>pam_info</refname> + <refname>pam_vinfo</refname> + <refpurpose>display messages to the user</refpurpose> + </refnamediv> + +<!-- body begins here --> + + <refsynopsisdiv id="pam_info-synopsis"> + <funcsynopsis> + <funcsynopsisinfo>#include <security/pam_ext.h></funcsynopsisinfo> + <funcprototype> + <funcdef>int <function>pam_info</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>const char *<parameter>fmt</parameter></paramdef> + <paramdef><parameter>...</parameter></paramdef> + </funcprototype> + <funcprototype> + <funcdef>int <function>pam_vinfo</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>const char *<parameter>fmt</parameter></paramdef> + <paramdef>va_list <parameter>args</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + <refsect1 id='pam_info-description'> + <title>DESCRIPTION</title> + <para> + The <function>pam_info</function> function prints messages + through the conversation function to the user. + </para> + <para> + The <function>pam_vinfo</function> function performs the same + task as <function>pam_info()</function> with the difference + that it takes a set of arguments which have been obtained using + the <citerefentry> + <refentrytitle>stdarg</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> variable argument list macros. + </para> + </refsect1> + <refsect1 id="pam_info-return_values"> + <title>RETURN VALUES</title> + <variablelist> + <varlistentry> + <term>PAM_BUF_ERR</term> + <listitem> + <para> + Memory buffer error. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_CONV_ERR</term> + <listitem> + <para> + Conversation failure. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + Transaction was successful created. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SYSTEM_ERR</term> + <listitem> + <para> + System error. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id='pam_info-see_also'> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam</refentrytitle><manvolnum>8</manvolnum> + </citerefentry> + </para> + </refsect1> + + <refsect1 id='pam_info-standards'> + <title>STANDARDS</title> + <para> + The <function>pam_info</function> and <function>pam_vinfo</function> + functions are Linux-PAM extensions. + </para> + </refsect1> + +</refentry> diff --git a/doc/man/pam_item_types_ext.inc.xml b/doc/man/pam_item_types_ext.inc.xml new file mode 100644 index 00000000..89f19875 --- /dev/null +++ b/doc/man/pam_item_types_ext.inc.xml @@ -0,0 +1,45 @@ +<!-- this file is included by pam_set_item and pam_get_item --> + + <variablelist> + <varlistentry> + <term>PAM_FAIL_DELAY</term> + <listitem> + <para> + A function pointer to redirect centrally managed + failure delays. See + <citerefentry> + <refentrytitle>pam_fail_delay</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term>PAM_XDISPLAY</term> + <listitem> + <para> + The name of the X display. For graphical, X-based applications the + value for this item should be the <emphasis>$DISPLAY</emphasis> + variable. This value may be used independently of + <emphasis>PAM_TTY</emphasis> for passing the + name of the display. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term>PAM_XAUTHDATA</term> + <listitem> + <para> + A pointer to a structure containing the X authentication data + required to make a connection to the display specified by + <emphasis>PAM_XDISPLAY</emphasis>, if such information is + necessary. See + <citerefentry> + <refentrytitle>pam_xauth_data</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>. + </para> + </listitem> + </varlistentry> + + </variablelist> diff --git a/doc/man/pam_item_types_std.inc.xml b/doc/man/pam_item_types_std.inc.xml new file mode 100644 index 00000000..81f240b0 --- /dev/null +++ b/doc/man/pam_item_types_std.inc.xml @@ -0,0 +1,138 @@ +<!-- this file is included by pam_set_item and pam_get_item --> + + <variablelist> + <varlistentry> + <term>PAM_SERVICE</term> + <listitem> + <para> + The service name (which identifies that PAM stack that + the PAM functions will use to authenticate the program). + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term>PAM_USER</term> + <listitem> + <para> + The username of the entity under whose identity service + will be given. That is, following authentication, + <emphasis>PAM_USER</emphasis> identifies the local entity + that gets to use the service. Note, this value can be mapped + from something (eg., "anonymous") to something else (eg. + "guest119") by any module in the PAM stack. As such an + application should consult the value of + <emphasis>PAM_USER</emphasis> after each call to a PAM function. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term>PAM_USER_PROMPT</term> + <listitem> + <para> + The string used when prompting for a user's name. The default + value for this string is a localized version of "login: ". + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term>PAM_TTY</term> + <listitem> + <para> + The terminal name: prefixed by <filename>/dev/</filename> if + it is a device file; for graphical, X-based, applications the + value for this item should be the + <emphasis>$DISPLAY</emphasis> variable. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term>PAM_RUSER</term> + <listitem> + <para> + The requesting user name: local name for a locally + requesting user or a remote user name for a remote + requesting user. + </para> + <para> + Generally an application or module will attempt to supply + the value that is most strongly authenticated (a local account + before a remote one. The level of trust in this value is + embodied in the actual authentication stack associated with + the application, so it is ultimately at the discretion of the + system administrator. + </para> + <para> + <emphasis>PAM_RUSER@PAM_RHOST</emphasis> should always identify + the requesting user. In some cases, + <emphasis>PAM_RUSER</emphasis> may be NULL. In such situations, + it is unclear who the requesting entity is. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term>PAM_RHOST</term> + <listitem> + <para> + The requesting hostname (the hostname of the machine from + which the <emphasis>PAM_RUSER</emphasis> entity is requesting + service). That is <emphasis>PAM_RUSER@PAM_RHOST</emphasis> + does identify the requesting user. In some applications, + <emphasis>PAM_RHOST</emphasis> may be NULL. In such situations, + it is unclear where the authentication request is originating + from. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term>PAM_AUTHTOK</term> + <listitem> + <para> + The authentication token (often a password). This token + should be ignored by all module functions besides + <citerefentry> + <refentrytitle>pam_sm_authenticate</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> and + <citerefentry> + <refentrytitle>pam_sm_chauthtok</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>. + In the former function it is used to pass the most recent + authentication token from one stacked module to another. In + the latter function the token is used for another purpose. + It contains the currently active authentication token. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term>PAM_OLDAUTHTOK</term> + <listitem> + <para> + The old authentication token. This token should be ignored + by all module functions except + <citerefentry> + <refentrytitle>pam_sm_chauthtok</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>. + </para> + </listitem> + </varlistentry> + + + <varlistentry> + <term>PAM_CONV</term> + <listitem> + <para> + The pam_conv structure. See + <citerefentry> + <refentrytitle>pam_conv</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>. + </para> + </listitem> + </varlistentry> + + </variablelist> diff --git a/doc/man/pam_misc_drop_env.3 b/doc/man/pam_misc_drop_env.3 new file mode 100644 index 00000000..c79e3bb2 --- /dev/null +++ b/doc/man/pam_misc_drop_env.3 @@ -0,0 +1,46 @@ +.\" Title: pam_misc_drop_env +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_MISC_DROP_ENV" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_misc_drop_env - liberating a locally saved environment +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <security/pam_misc\.h> +.fi +.ft +.HP 22 +.BI "int pam_misc_drop_env(char\ **" "env" ");" +.SH "DESCRIPTION" +.PP +This function is defined to complement the +\fBpam_getenvlist\fR(3) +function\. It liberates the memory associated with +\fIenv\fR, +\fIoverwriting\fR +with +\fI0\fR +all memory before +\fBfree()\fRing it\. +.SH "SEE ALSO" +.PP + +\fBpam_getenvlist\fR(3), +\fBpam\fR(8) +.SH "STANDARDS" +.PP +The +\fBpam_misc_drop_env\fR +function is part of the +\fBlibpam_misc\fR +Library and not defined in any standard\. diff --git a/doc/man/pam_misc_drop_env.3.xml b/doc/man/pam_misc_drop_env.3.xml new file mode 100644 index 00000000..1941f589 --- /dev/null +++ b/doc/man/pam_misc_drop_env.3.xml @@ -0,0 +1,63 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> + +<refentry id="pam_misc_drop_env"> + + <refmeta> + <refentrytitle>pam_misc_drop_env</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_misc_drop_env-name"> + <refname>pam_misc_drop_env</refname> + <refpurpose>liberating a locally saved environment</refpurpose> + </refnamediv> + +<!-- body begins here --> + + <refsynopsisdiv> + <funcsynopsis id="pam_misc_drop_env-synopsis"> + <funcsynopsisinfo>#include <security/pam_misc.h></funcsynopsisinfo> + <funcprototype> + <funcdef>int <function>pam_misc_drop_env</function></funcdef> + <paramdef>char **<parameter>env</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + <refsect1 id='pam_misc_drop_env-description'> + <title>DESCRIPTION</title> + <para> + This function is defined to complement the <citerefentry> + <refentrytitle>pam_getenvlist</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> function. It liberates the memory associated + with <parameter>env</parameter>, <emphasis>overwriting</emphasis> + with <emphasis>0</emphasis> all memory before + <function>free()</function>ing it. + </para> + </refsect1> + + <refsect1 id='pam_misc_drop_env-see_also'> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam_getenvlist</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam</refentrytitle><manvolnum>8</manvolnum> + </citerefentry> + </para> + </refsect1> + + <refsect1 id='pam_misc_drop_env-standards'> + <title>STANDARDS</title> + <para> + The <function>pam_misc_drop_env</function> function is part of the + <command>libpam_misc</command> Library and not defined in any + standard. + </para> + </refsect1> + +</refentry> diff --git a/doc/man/pam_misc_paste_env.3 b/doc/man/pam_misc_paste_env.3 new file mode 100644 index 00000000..c157301b --- /dev/null +++ b/doc/man/pam_misc_paste_env.3 @@ -0,0 +1,41 @@ +.\" Title: pam_misc_paste_env +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_MISC_PASTE_ENV" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_misc_paste_env - transcribing an environment to that of PAM +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <security/pam_misc\.h> +.fi +.ft +.HP 23 +.BI "int pam_misc_paste_env(pam_handle_t\ *" "pamh" ", const\ char\ *\ const\ *" "user" ");" +.SH "DESCRIPTION" +.PP +This function takes the supplied list of environment pointers and +\fIuploads\fR +its contents to the PAM environment\. Success is indicated by +PAM_SUCCESS\. +.SH "SEE ALSO" +.PP + +\fBpam_putenv\fR(3), +\fBpam\fR(8) +.SH "STANDARDS" +.PP +The +\fBpam_misc_paste_env\fR +function is part of the +\fBlibpam_misc\fR +Library and not defined in any standard\. diff --git a/doc/man/pam_misc_paste_env.3.xml b/doc/man/pam_misc_paste_env.3.xml new file mode 100644 index 00000000..d9a282c0 --- /dev/null +++ b/doc/man/pam_misc_paste_env.3.xml @@ -0,0 +1,61 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> + +<refentry id="pam_misc_paste_env"> + + <refmeta> + <refentrytitle>pam_misc_paste_env</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_misc_paste_env-name"> + <refname>pam_misc_paste_env</refname> + <refpurpose>transcribing an environment to that of PAM</refpurpose> + </refnamediv> + +<!-- body begins here --> + + <refsynopsisdiv> + <funcsynopsis id="pam_misc_paste_env-synopsis"> + <funcsynopsisinfo>#include <security/pam_misc.h></funcsynopsisinfo> + <funcprototype> + <funcdef>int <function>pam_misc_paste_env</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>const char * const *<parameter>user</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + <refsect1 id='pam_misc_paste_env-description'> + <title>DESCRIPTION</title> + <para> + This function takes the supplied list of environment pointers and + <emphasis>uploads</emphasis> its contents to the PAM environment. + Success is indicated by <errorname>PAM_SUCCESS</errorname>. + </para> + </refsect1> + + <refsect1 id='pam_misc_paste_env-see_also'> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam_putenv</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam</refentrytitle><manvolnum>8</manvolnum> + </citerefentry> + </para> + </refsect1> + + <refsect1 id='pam_misc_paste_env-standards'> + <title>STANDARDS</title> + <para> + The <function>pam_misc_paste_env</function> function is part of the + <command>libpam_misc</command> Library and not defined in any + standard. + </para> + </refsect1> + +</refentry> diff --git a/doc/man/pam_misc_setenv.3 b/doc/man/pam_misc_setenv.3 new file mode 100644 index 00000000..e6f2e6c1 --- /dev/null +++ b/doc/man/pam_misc_setenv.3 @@ -0,0 +1,46 @@ +.\" Title: pam_misc_setenv +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_MISC_SETENV" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_misc_setenv - BSD like PAM environment variable setting +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <security/pam_misc\.h> +.fi +.ft +.HP 20 +.BI "int pam_misc_setenv(pam_handle_t\ *" "pamh" ", const\ char\ *" "name" ", const\ char\ *" "value" ", int" "readonly" ");" +.SH "DESCRIPTION" +.PP +This function performs a task equivalent to +\fBpam_putenv\fR(3), its syntax is, however, more like the BSD style function; +\fBsetenv()\fR\. The +\fIname\fR +and +\fIvalue\fR +are concatenated with an \'=\' to form a name=value and passed to +\fBpam_putenv()\fR\. If, however, the PAM variable is already set, the replacement will only be applied if the last argument, +\fIreadonly\fR, is zero\. +.SH "SEE ALSO" +.PP + +\fBpam_putenv\fR(3), +\fBpam\fR(8) +.SH "STANDARDS" +.PP +The +\fBpam_misc_setenv\fR +function is part of the +\fBlibpam_misc\fR +Library and not defined in any standard\. diff --git a/doc/man/pam_misc_setenv.3.xml b/doc/man/pam_misc_setenv.3.xml new file mode 100644 index 00000000..fdc8f33d --- /dev/null +++ b/doc/man/pam_misc_setenv.3.xml @@ -0,0 +1,68 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> + +<refentry id="pam_misc_setenv"> + + <refmeta> + <refentrytitle>pam_misc_setenv</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + <refnamediv id="pam_misc_setenv-name"> + <refname>pam_misc_setenv</refname> + <refpurpose>BSD like PAM environment variable setting</refpurpose> + </refnamediv> + +<!-- body begins here --> + + <refsynopsisdiv> + <funcsynopsis id="pam_misc_setenv-synopsis"> + <funcsynopsisinfo>#include <security/pam_misc.h></funcsynopsisinfo> + <funcprototype> + <funcdef>int <function>pam_misc_setenv</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>const char *<parameter>name</parameter></paramdef> + <paramdef>const char *<parameter>value</parameter></paramdef> + <paramdef>int<parameter>readonly</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + <refsect1 id='pam_misc_setenv-description'> + <title>DESCRIPTION</title> + <para> + This function performs a task equivalent to <citerefentry> + <refentrytitle>pam_putenv</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, its syntax is, however, more like the BSD style + function; <function>setenv()</function>. The <parameter>name</parameter> + and <parameter>value</parameter> are concatenated with an '=' to + form a name=value and passed to <function>pam_putenv()</function>. + If, however, the PAM variable is already set, the replacement will + only be applied if the last argument, <parameter>readonly</parameter>, + is zero. + </para> + </refsect1> + + <refsect1 id='pam_misc_setenv-see_also'> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam_putenv</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam</refentrytitle><manvolnum>8</manvolnum> + </citerefentry> + </para> + </refsect1> + + <refsect1 id='pam_misc_setenv-standards'> + <title>STANDARDS</title> + <para> + The <function>pam_misc_setenv</function> function is part of the + <command>libpam_misc</command> Library and not defined in any + standard. + </para> + </refsect1> + +</refentry> diff --git a/doc/man/pam_open_session.3 b/doc/man/pam_open_session.3 new file mode 100644 index 00000000..7105a056 --- /dev/null +++ b/doc/man/pam_open_session.3 @@ -0,0 +1,65 @@ +.\" Title: pam_open_session +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_OPEN_SESSION" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_open_session - start PAM session management +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <security/pam_appl\.h> +.fi +.ft +.HP 21 +.BI "int pam_open_session(pam_handle_t\ *" "pamh" ", int\ " "flags" ");" +.SH "DESCRIPTION" +.PP +The +\fBpam_open_session\fR +function sets up a user session for a previously successful authenticated user\. The session should later be terminated with a call to +\fBpam_close_session\fR(3)\. +.PP +It should be noted that the effective uid, +\fBgeteuid\fR(2)\. of the application should be of sufficient privilege to perform such tasks as creating or mounting the user\'s home directory for example\. +.PP +The flags argument is the binary or of zero or more of the following values: +.PP +PAM_SILENT +.RS 4 +Do not emit any messages\. +.RE +.SH "RETURN VALUES" +.PP +PAM_ABORT +.RS 4 +General failure\. +.RE +.PP +PAM_BUF_ERR +.RS 4 +Memory buffer error\. +.RE +.PP +PAM_SESSION_ERR +.RS 4 +Session failure\. +.RE +.PP +PAM_SUCCESS +.RS 4 +Session was successful created\. +.RE +.SH "SEE ALSO" +.PP + +\fBpam_close_session\fR(3), +\fBpam_strerror\fR(3) diff --git a/doc/man/pam_open_session.3.xml b/doc/man/pam_open_session.3.xml new file mode 100644 index 00000000..eba0bc01 --- /dev/null +++ b/doc/man/pam_open_session.3.xml @@ -0,0 +1,115 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> + +<refentry id='pam_send'> + + <refmeta> + <refentrytitle>pam_open_session</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_open_session-name"> + <refname>pam_open_session</refname> + <refpurpose>start PAM session management</refpurpose> + </refnamediv> + +<!-- body begins here --> + + <refsynopsisdiv> + <funcsynopsis id="pam_open_session-synopsis"> + <funcsynopsisinfo>#include <security/pam_appl.h></funcsynopsisinfo> + <funcprototype> + <funcdef>int <function>pam_open_session</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>int <parameter>flags</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + + <refsect1 id="pam_open_session-description"> + <title>DESCRIPTION</title> + <para> + The <function>pam_open_session</function> function sets up a + user session for a previously successful authenticated user. + The session should later be terminated with a call to + <citerefentry> + <refentrytitle>pam_close_session</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>. + </para> + <para> + It should be noted that the effective uid, + <citerefentry> + <refentrytitle>geteuid</refentrytitle><manvolnum>2</manvolnum> + </citerefentry>. of the application should be of sufficient + privilege to perform such tasks as creating or mounting the + user's home directory for example. + </para> + <para> + The flags argument is the binary or of zero or more of the + following values: + </para> + <variablelist> + <varlistentry> + <term>PAM_SILENT</term> + <listitem> + <para> + Do not emit any messages. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id="pam_open_session-return_values"> + <title>RETURN VALUES</title> + <variablelist> + <varlistentry> + <term>PAM_ABORT</term> + <listitem> + <para> + General failure. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_BUF_ERR</term> + <listitem> + <para> + Memory buffer error. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SESSION_ERR</term> + <listitem> + <para> + Session failure. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + Session was successful created. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id="pam_open_session-see_also"> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam_close_session</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_strerror</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> + </para> + </refsect1> +</refentry> diff --git a/doc/man/pam_prompt.3 b/doc/man/pam_prompt.3 new file mode 100644 index 00000000..fa3d96b4 --- /dev/null +++ b/doc/man/pam_prompt.3 @@ -0,0 +1,63 @@ +.\" Title: pam_prompt +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_PROMPT" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_prompt, pam_vprompt - interface to conversation function +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <security/pam_ext\.h> +.fi +.ft +.HP 16 +.BI "void pam_prompt(pam_handle_t\ *" "pamh" ", int\ " "style" ", char\ **" "response" ", const\ char\ *" "fmt" ", " "\.\.\." ");" +.HP 17 +.BI "void pam_vprompt(pam_handle_t\ *" "pamh" ", int\ " "style" ", char\ **" "response" ", const\ char\ *" "fmt" ", va_list\ " "args" ");" +.SH "DESCRIPTION" +.PP +The +\fBpam_prompt\fR +function constructs a message from the specified format string and arguments and passes it to +.SH "RETURN VALUES" +.PP +PAM_BUF_ERR +.RS 4 +Memory buffer error\. +.RE +.PP +PAM_CONV_ERR +.RS 4 +Conversation failure\. +.RE +.PP +PAM_SUCCESS +.RS 4 +Transaction was successful created\. +.RE +.PP +PAM_SYSTEM_ERR +.RS 4 +System error\. +.RE +.SH "SEE ALSO" +.PP + +\fBpam\fR(8), +\fBpam_conv\fR(3) +.SH "STANDARDS" +.PP +The +\fBpam_prompt\fR +and +\fBpam_vprompt\fR +functions are Linux\-PAM extensions\. diff --git a/doc/man/pam_prompt.3.xml b/doc/man/pam_prompt.3.xml new file mode 100644 index 00000000..d0824131 --- /dev/null +++ b/doc/man/pam_prompt.3.xml @@ -0,0 +1,110 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> + +<refentry id="pam_prompt"> + + <refmeta> + <refentrytitle>pam_prompt</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_prompt-name"> + <refname>pam_prompt</refname> + <refname>pam_vprompt</refname> + <refpurpose>interface to conversation function</refpurpose> + </refnamediv> + +<!-- body begins here --> + + <refsynopsisdiv id="pam_prompt-synopsis"> + <funcsynopsis> + <funcsynopsisinfo>#include <security/pam_ext.h></funcsynopsisinfo> + <funcprototype> + <funcdef>void <function>pam_prompt</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>int <parameter>style</parameter></paramdef> + <paramdef>char **<parameter>response</parameter></paramdef> + <paramdef>const char *<parameter>fmt</parameter></paramdef> + <paramdef><parameter>...</parameter></paramdef> + </funcprototype> + <funcprototype> + <funcdef>void <function>pam_vprompt</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>int <parameter>style</parameter></paramdef> + <paramdef>char **<parameter>response</parameter></paramdef> + <paramdef>const char *<parameter>fmt</parameter></paramdef> + <paramdef>va_list <parameter>args</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + <refsect1 id='pam_prompt-description'> + <title>DESCRIPTION</title> + <para> + The <function>pam_prompt</function> function constructs a message + from the specified format string and arguments and passes it to + </para> + </refsect1> + + <refsect1 id="pam_prompt-return_values"> + <title>RETURN VALUES</title> + <variablelist> + <varlistentry> + <term>PAM_BUF_ERR</term> + <listitem> + <para> + Memory buffer error. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_CONV_ERR</term> + <listitem> + <para> + Conversation failure. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + Transaction was successful created. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SYSTEM_ERR</term> + <listitem> + <para> + System error. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + + <refsect1 id='pam_prompt-see_also'> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam</refentrytitle><manvolnum>8</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_conv</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> + </para> + </refsect1> + + <refsect1 id='pam_prompt-standards'> + <title>STANDARDS</title> + <para> + The <function>pam_prompt</function> and <function>pam_vprompt</function> + functions are Linux-PAM extensions. + </para> + </refsect1> + +</refentry> diff --git a/doc/man/pam_putenv.3 b/doc/man/pam_putenv.3 new file mode 100644 index 00000000..58844701 --- /dev/null +++ b/doc/man/pam_putenv.3 @@ -0,0 +1,96 @@ +.\" Title: pam_putenv +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_PUTENV" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_putenv - set or change PAM environment variable +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <security/pam_appl\.h> +.fi +.ft +.HP 15 +.BI "int pam_putenv(pam_handle_t\ *" "pamh" ", const\ char\ *" "name_value" ");" +.SH "DESCRIPTION" +.PP +The +\fBpam_putenv\fR +function is used to add or change the value of PAM environment variables as associated with the +\fIpamh\fR +handle\. +.PP +The +\fIpamh\fR +argument is an authentication handle obtained by a prior call to pam_start()\. The +\fIname_value\fR +argument is a single NUL terminated string of one of the following forms: +.PP +NAME=value of variable +.RS 4 +In this case the environment variable of the given NAME is set to the indicated value: +\fIvalue of variable\fR\. If this variable is already known, it is overwritten\. Otherwise it is added to the PAM environment\. +.RE +.PP +NAME= +.RS 4 +This function sets the variable to an empty value\. It is listed separately to indicate that this is the correct way to achieve such a setting\. +.RE +.PP +NAME +.RS 4 +Without an \'=\' the +\fBpam_putenv\fR() function will delete the corresponding variable from the PAM environment\. +.RE +.PP + +\fBpam_putenv\fR() operates on a copy of +\fIname_value\fR, which means in contrast to +\fBputenv\fR(3), the application is responsible to free the data\. +.SH "RETURN VALUES" +.PP +PAM_PERM_DENIED +.RS 4 +Argument +\fIname_value\fR +given is a NULL pointer\. +.RE +.PP +PAM_BAD_ITEM +.RS 4 +Variable requested (for deletion) is not currently set\. +.RE +.PP +PAM_ABORT +.RS 4 +The +\fIpamh\fR +handle is corrupt\. +.RE +.PP +PAM_BUF_ERR +.RS 4 +Memory buffer error\. +.RE +.PP +PAM_SUCCESS +.RS 4 +The environment variable was successfully updated\. +.RE +.SH "SEE ALSO" +.PP + +\fBpam_start\fR(3), +\fBpam_getenv\fR(3), +\fBpam_getenvlist\fR(3), +\fBpam_strerror\fR(3), +\fBpam\fR(8) diff --git a/doc/man/pam_putenv.3.xml b/doc/man/pam_putenv.3.xml new file mode 100644 index 00000000..619b218a --- /dev/null +++ b/doc/man/pam_putenv.3.xml @@ -0,0 +1,152 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> +<refentry id='pam_putenv'> + <refmeta> + <refentrytitle>pam_putenv</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_putenv-name"> + <refname>pam_putenv</refname> + <refpurpose>set or change PAM environment variable</refpurpose> + </refnamediv> + +<!-- body begins here --> + + <refsynopsisdiv> + <funcsynopsis id='pam_putenv-synopsis'> + <funcsynopsisinfo>#include <security/pam_appl.h></funcsynopsisinfo> + <funcprototype> + <funcdef>int <function>pam_putenv</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>const char *<parameter>name_value</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + + <refsect1 id='pam_putenv-description'> + <title>DESCRIPTION</title> + <para> + The <function>pam_putenv</function> function is used to + add or change the value of PAM environment variables as + associated with the <emphasis>pamh</emphasis> handle. + </para> + <para> + The <emphasis>pamh</emphasis> argument is an authentication + handle obtained by a prior call to pam_start(). + The <emphasis>name_value</emphasis> argument is a single NUL + terminated string of one of the following forms: + </para> + <variablelist> + <varlistentry> + <term>NAME=value of variable</term> + <listitem> + <para> + In this case the environment variable of the given NAME + is set to the indicated value: + <emphasis>value of variable</emphasis>. If this variable + is already known, it is overwritten. Otherwise it is added + to the PAM environment. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>NAME=</term> + <listitem> + <para> + This function sets the variable to an empty value. It is + listed separately to indicate that this is the correct way + to achieve such a setting. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>NAME</term> + <listitem> + <para> + Without an '=' the <function>pam_putenv</function>() function + will delete the + corresponding variable from the PAM environment. + </para> + </listitem> + </varlistentry> + </variablelist> + <para> + <function>pam_putenv</function>() operates on a copy of + <emphasis>name_value</emphasis>, which means in contrast to + <citerefentry> + <refentrytitle>putenv</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, the application is responsible to free the data. + </para> + </refsect1> + + <refsect1 id="pam_putenv-return_values"> + <title>RETURN VALUES</title> + <variablelist> + <varlistentry> + <term>PAM_PERM_DENIED</term> + <listitem> + <para> + Argument <emphasis>name_value</emphasis> given is a NULL pointer. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_BAD_ITEM</term> + <listitem> + <para> + Variable requested (for deletion) is not currently set. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_ABORT</term> + <listitem> + <para> + The <emphasis>pamh</emphasis> handle is corrupt. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_BUF_ERR</term> + <listitem> + <para> + Memory buffer error. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + The environment variable was successfully updated. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id='pam_putenv-see_also'> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam_start</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_getenv</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_getenvlist</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_strerror</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam</refentrytitle><manvolnum>8</manvolnum> + </citerefentry> + </para> + </refsect1> +</refentry> diff --git a/doc/man/pam_set_data.3 b/doc/man/pam_set_data.3 new file mode 100644 index 00000000..f8ac607c --- /dev/null +++ b/doc/man/pam_set_data.3 @@ -0,0 +1,103 @@ +.\" Title: pam_set_data +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_SET_DATA" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_set_data - set module internal data +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <security/pam_modules\.h> +.fi +.ft +.HP 17 +.BI "int pam_set_data(pam_handle_t\ *" "pamh" ", const\ char\ *" "module_data_name" ", void\ *" "data" ", void\ " "(*cleanup)(pam_handle_t\ *pamh,\ void\ *data,\ int\ error_status)" ");" +.SH "DESCRIPTION" +.PP +The +\fBpam_set_data\fR +function associates a pointer to an object with the (hopefully) unique string +\fImodule_data_name\fR +in the PAM context specified by the +\fIpamh\fR +argument\. +.PP +PAM modules may be dynamically loadable objects\. In general such files should not contain +\fIstatic\fR +variables\. This function and its counterpart +\fBpam_get_data\fR(3), provide a mechanism for a module to associate some data with the handle +\fIpamh\fR\. Typically a module will call the +\fBpam_set_data\fR +function to register some data under a (hopefully) unique +\fImodule_data_name\fR\. The data is available for use by other modules too but +\fInot\fR +by an application\. Since this functions stores only a pointer to the +\fIdata\fR, the module should not modify or free the content of it\. +.PP +The function +\fBcleanup()\fR +is associated with the +\fIdata\fR +and, if non\-NULL, it is called when this data is over\-written or following a call to +\fBpam_end\fR(3)\. +.PP +The +\fIerror_status\fR +argument is used to indicate to the module the sort of action it is to take in cleaning this data item\. As an example, Kerberos creates a ticket file during the authentication phase, this file might be associated with a data item\. When +\fBpam_end\fR(3) +is called by the module, the +\fIerror_status\fR +carries the return value of the +\fBpam_authenticate\fR(3) +or other +\fIlibpam\fR +function as appropriate\. Based on this value the Kerberos module may choose to delete the ticket file (\fIauthentication failure\fR) or leave it in place\. +.PP +The +\fIerror_status\fR +may have been logically OR\'d with either of the following two values: +.PP +PAM_DATA_REPLACE +.RS 4 +When a data item is being replaced (through a second call to +\fBpam_set_data\fR) this mask is used\. Otherwise, the call is assumed to be from +\fBpam_end\fR(3)\. +.RE +.PP +PAM_DATA_SILENT +.RS 4 +Which indicates that the process would prefer to perform the +\fBcleanup()\fR +quietly\. That is, discourages logging/messages to the user\. +.RE +.SH "RETURN VALUES" +.PP +PAM_BUF_ERR +.RS 4 +Memory buffer error\. +.RE +.PP +PAM_SUCCESS +.RS 4 +Data was successful stored\. +.RE +.PP +PAM_SYSTEM_ERR +.RS 4 +A NULL pointer was submitted as PAM handle or the function was called by an application\. +.RE +.SH "SEE ALSO" +.PP + +\fBpam_end\fR(3), +\fBpam_get_data\fR(3), +\fBpam_strerror\fR(3) diff --git a/doc/man/pam_set_data.3.xml b/doc/man/pam_set_data.3.xml new file mode 100644 index 00000000..d6d224e7 --- /dev/null +++ b/doc/man/pam_set_data.3.xml @@ -0,0 +1,172 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> + +<refentry id='pam_set_data'> + + <refmeta> + <refentrytitle>pam_set_data</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id='pam_set_data-name'> + <refname>pam_set_data</refname> + <refpurpose> + set module internal data + </refpurpose> + </refnamediv> + + +<!-- body begins here --> + + <refsynopsisdiv> + + <funcsynopsis id="pam_set_data-synopsis"> + <funcsynopsisinfo>#include <security/pam_modules.h></funcsynopsisinfo> + <funcprototype> + <funcdef>int <function>pam_set_data</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>const char *<parameter>module_data_name</parameter></paramdef> + <paramdef>void *<parameter>data</parameter></paramdef> + <paramdef>void <parameter>(*cleanup)(pam_handle_t *pamh, void *data, int error_status)</parameter></paramdef> + </funcprototype> + </funcsynopsis> + + </refsynopsisdiv> + + + <refsect1 id="pam_set_data-description"> + <title>DESCRIPTION</title> + <para> + The <function>pam_set_data</function> function associates a pointer + to an object with the (hopefully) unique string + <emphasis>module_data_name</emphasis> in the PAM context specified + by the <emphasis>pamh</emphasis> argument. + </para> + + <para> + PAM modules may be dynamically loadable objects. In general such files + should not contain <emphasis>static</emphasis> variables. This function + and its counterpart + <citerefentry> + <refentrytitle>pam_get_data</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + provide a mechanism for a module to associate some data with + the handle <emphasis>pamh</emphasis>. Typically a module will call the + <function>pam_set_data</function> function to register some data + under a (hopefully) unique <emphasis>module_data_name</emphasis>. + The data is available for use by other modules too but + <emphasis>not</emphasis> by an application. Since this functions + stores only a pointer to the <emphasis>data</emphasis>, the module + should not modify or free the content of it. + </para> + + <para> + The function <function>cleanup()</function> is associated with the + <emphasis>data</emphasis> and, if non-NULL, it is called when this + data is over-written or following a call to + <citerefentry> + <refentrytitle>pam_end</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>. + </para> + + <para> + The <emphasis>error_status</emphasis> argument is used to indicate + to the module the sort of action it is to take in cleaning this data + item. As an example, Kerberos creates a ticket file during the + authentication phase, this file might be associated with a data item. + When + <citerefentry> + <refentrytitle>pam_end</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> + is called by the module, the <emphasis>error_status</emphasis> + carries the return value of the + <citerefentry> + <refentrytitle>pam_authenticate</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> + or other <emphasis>libpam</emphasis> function as appropriate. Based + on this value the Kerberos module may choose to delete the ticket file + (<emphasis>authentication failure</emphasis>) or leave it in place. + </para> + + <para> + The <emphasis>error_status</emphasis> may have been logically + OR'd with either of the following two values: + </para> + + <variablelist> + <varlistentry> + <term>PAM_DATA_REPLACE</term> + <listitem> + <para> + When a data item is being replaced (through a second call to + <function>pam_set_data</function>) this mask is used. + Otherwise, the call is assumed to be from + <citerefentry> + <refentrytitle>pam_end</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term>PAM_DATA_SILENT</term> + <listitem> + <para> + Which indicates that the process would prefer to perform the + <function>cleanup()</function> quietly. That is, discourages + logging/messages to the user. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id="pam_set_data-return_values"> + <title>RETURN VALUES</title> + <variablelist> + <varlistentry> + <term>PAM_BUF_ERR</term> + <listitem> + <para> + Memory buffer error. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + Data was successful stored. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SYSTEM_ERR</term> + <listitem> + <para> + A NULL pointer was submitted as PAM handle or the + function was called by an application. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id="pam_set_data-see_also"> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam_end</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_get_data</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_strerror</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> + </para> + </refsect1> + +</refentry> diff --git a/doc/man/pam_set_item.3 b/doc/man/pam_set_item.3 new file mode 100644 index 00000000..015cc8e4 --- /dev/null +++ b/doc/man/pam_set_item.3 @@ -0,0 +1,170 @@ +.\" Title: pam_set_item +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_SET_ITEM" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_set_item - set and update PAM informations +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <security/pam_modules\.h> +.fi +.ft +.HP 17 +.BI "int pam_set_item(pam_handle_t\ *" "pamh" ", int\ " "item_type" ", const\ void\ *" "item" ");" +.SH "DESCRIPTION" +.PP +The +\fBpam_set_item\fR +function allows applications and PAM service modules to access and to update PAM informations of +\fIitem_type\fR\. For this a copy of the object pointed to by the +\fIitem\fR +argument is created\. The following +\fIitem_type\fRs are supported: +.PP +PAM_SERVICE +.RS 4 +The service name (which identifies that PAM stack that the PAM functions will use to authenticate the program)\. +.RE +.PP +PAM_USER +.RS 4 +The username of the entity under whose identity service will be given\. That is, following authentication, +\fIPAM_USER\fR +identifies the local entity that gets to use the service\. Note, this value can be mapped from something (eg\., "anonymous") to something else (eg\. "guest119") by any module in the PAM stack\. As such an application should consult the value of +\fIPAM_USER\fR +after each call to a PAM function\. +.RE +.PP +PAM_USER_PROMPT +.RS 4 +The string used when prompting for a user\'s name\. The default value for this string is a localized version of "login: "\. +.RE +.PP +PAM_TTY +.RS 4 +The terminal name: prefixed by +\fI/dev/\fR +if it is a device file; for graphical, X\-based, applications the value for this item should be the +\fI$DISPLAY\fR +variable\. +.RE +.PP +PAM_RUSER +.RS 4 +The requesting user name: local name for a locally requesting user or a remote user name for a remote requesting user\. +.sp +Generally an application or module will attempt to supply the value that is most strongly authenticated (a local account before a remote one\. The level of trust in this value is embodied in the actual authentication stack associated with the application, so it is ultimately at the discretion of the system administrator\. +.sp + +\fIPAM_RUSER@PAM_RHOST\fR +should always identify the requesting user\. In some cases, +\fIPAM_RUSER\fR +may be NULL\. In such situations, it is unclear who the requesting entity is\. +.RE +.PP +PAM_RHOST +.RS 4 +The requesting hostname (the hostname of the machine from which the +\fIPAM_RUSER\fR +entity is requesting service)\. That is +\fIPAM_RUSER@PAM_RHOST\fR +does identify the requesting user\. In some applications, +\fIPAM_RHOST\fR +may be NULL\. In such situations, it is unclear where the authentication request is originating from\. +.RE +.PP +PAM_AUTHTOK +.RS 4 +The authentication token (often a password)\. This token should be ignored by all module functions besides +\fBpam_sm_authenticate\fR(3) +and +\fBpam_sm_chauthtok\fR(3)\. In the former function it is used to pass the most recent authentication token from one stacked module to another\. In the latter function the token is used for another purpose\. It contains the currently active authentication token\. +.RE +.PP +PAM_OLDAUTHTOK +.RS 4 +The old authentication token\. This token should be ignored by all module functions except +\fBpam_sm_chauthtok\fR(3)\. +.RE +.PP +PAM_CONV +.RS 4 +The pam_conv structure\. See +\fBpam_conv\fR(3)\. +.RE +.PP +The following additional items are specific to Linux\-PAM and should not be used in portable applications: +.PP +PAM_FAIL_DELAY +.RS 4 +A function pointer to redirect centrally managed failure delays\. See +\fBpam_fail_delay\fR(3)\. +.RE +.PP +PAM_XDISPLAY +.RS 4 +The name of the X display\. For graphical, X\-based applications the value for this item should be the +\fI$DISPLAY\fR +variable\. This value may be used independently of +\fIPAM_TTY\fR +for passing the name of the display\. +.RE +.PP +PAM_XAUTHDATA +.RS 4 +A pointer to a structure containing the X authentication data required to make a connection to the display specified by +\fIPAM_XDISPLAY\fR, if such information is necessary\. See +\fBpam_xauth_data\fR(3)\. +.RE +.PP +For all +\fIitem_type\fRs, other than PAM_CONV and PAM_FAIL_DELAY, +\fIitem\fR +is a pointer to a <NUL> terminated character string\. In the case of PAM_CONV, +\fIitem\fR +points to an initialized +\fIpam_conv\fR +structure\. In the case of PAM_FAIL_DELAY, +\fIitem\fR +is a function pointer: +\fBvoid (*delay_fn)(int retval, unsigned usec_delay, void *appdata_ptr)\fR +.PP +Both, PAM_AUTHTOK and PAM_OLDAUTHTOK, will be reseted before returning to the application\. Which means an application is not able to access the authentication tokens\. +.SH "RETURN VALUES" +.PP +PAM_BAD_ITEM +.RS 4 +The application attempted to set an undefined or inaccessible item\. +.RE +.PP +PAM_BUF_ERR +.RS 4 +Memory buffer error\. +.RE +.PP +PAM_SUCCESS +.RS 4 +Data was successful updated\. +.RE +.PP +PAM_SYSTEM_ERR +.RS 4 +The +\fIpam_handle_t\fR +passed as first argument was invalid\. +.RE +.SH "SEE ALSO" +.PP + +\fBpam_get_item\fR(3), +\fBpam_strerror\fR(3) diff --git a/doc/man/pam_set_item.3.xml b/doc/man/pam_set_item.3.xml new file mode 100644 index 00000000..39758313 --- /dev/null +++ b/doc/man/pam_set_item.3.xml @@ -0,0 +1,136 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" +[ +<!-- +<!ENTITY accessconf SYSTEM "pam_item_types_std.inc.xml"> +<!ENTITY accessconf SYSTEM "pam_item_types_ext.inc.xml"> +--> +]> + +<refentry id='pam_set_item'> + + <refmeta> + <refentrytitle>pam_set_item</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id='pam_set_item-name'> + <refname>pam_set_item</refname> + <refpurpose> + set and update PAM informations + </refpurpose> + </refnamediv> + + +<!-- body begins here --> + + <refsynopsisdiv> + + <funcsynopsis id="pam_set_item-synopsis"> + <funcsynopsisinfo>#include <security/pam_modules.h></funcsynopsisinfo> + <funcprototype> + <funcdef>int <function>pam_set_item</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>int <parameter>item_type</parameter></paramdef> + <paramdef>const void *<parameter>item</parameter></paramdef> + </funcprototype> + </funcsynopsis> + + </refsynopsisdiv> + + + <refsect1 id="pam_set_item-description"> + <title>DESCRIPTION</title> + <para> + The <function>pam_set_item</function> function allows applications + and PAM service modules to access and to update PAM informations + of <emphasis>item_type</emphasis>. For this a copy + of the object pointed to by the <emphasis>item</emphasis> argument + is created. The following <emphasis>item_type</emphasis>s are + supported: + </para> + + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_item_types_std.inc.xml"/> + + <para> + The following additional items are specific to Linux-PAM and should not be used in + portable applications: + </para> + + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_item_types_ext.inc.xml"/> + + <para> + For all <emphasis>item_type</emphasis>s, other than PAM_CONV and + PAM_FAIL_DELAY, <emphasis>item</emphasis> is a pointer to a <NUL> + terminated character string. In the case of PAM_CONV, + <emphasis>item</emphasis> points to an initialized + <emphasis>pam_conv</emphasis> structure. In the case of + PAM_FAIL_DELAY, <emphasis>item</emphasis> is a function pointer: + <function>void (*delay_fn)(int retval, unsigned usec_delay, void *appdata_ptr)</function> + </para> + + <para> + Both, PAM_AUTHTOK and PAM_OLDAUTHTOK, will be reseted before + returning to the application. Which means an application is not + able to access the authentication tokens. + </para> + + </refsect1> + + <refsect1 id="pam_set_item-return_values"> + <title>RETURN VALUES</title> + <variablelist> + <varlistentry> + <term>PAM_BAD_ITEM</term> + <listitem> + <para> + The application attempted to set an undefined or inaccessible + item. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_BUF_ERR</term> + <listitem> + <para> + Memory buffer error. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + Data was successful updated. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SYSTEM_ERR</term> + <listitem> + <para> + The <emphasis>pam_handle_t</emphasis> passed as first + argument was invalid. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id="pam_set_item-see_also"> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam_get_item</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_strerror</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> + </para> + </refsect1> + +</refentry> diff --git a/doc/man/pam_setcred.3 b/doc/man/pam_setcred.3 new file mode 100644 index 00000000..10bcae8a --- /dev/null +++ b/doc/man/pam_setcred.3 @@ -0,0 +1,104 @@ +.\" Title: pam_setcred +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_SETCRED" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_setcred - establish / delete user credentials +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <security/pam_appl\.h> +.fi +.ft +.HP 16 +.BI "int pam_setcred(pam_handle_t\ *" "pamh" ", int\ " "flags" ");" +.SH "DESCRIPTION" +.PP +The +\fBpam_setcred\fR +function is used to establish, maintain and delete the credentials of a user\. It should be called after a user has been authenticated and before a session is opened for the user (with +\fBpam_open_session\fR(3))\. +.PP +A credential is something that the user possesses\. It is some property, such as a +\fIKerberos\fR +ticket, or a supplementary group membership that make up the uniqueness of a given user\. On a Linux system the user\'s +\fIUID\fR +and +\fIGID\fR\'s are credentials too\. However, it has been decided that these properties (along with the default supplementary groups of which the user is a member) are credentials that should be set directly by the application and not by PAM\. Such credentials should be established, by the application, prior to a call to this function\. For example, +\fBinitgroups\fR(2) +(or equivalent) should have been performed\. +.PP +Valid +\fIflags\fR, any one of which, may be logically OR\'d with +\fBPAM_SILENT\fR, are: +.PP +PAM_ESTABLISH_CRED +.RS 4 +Initialize the credentials for the user\. +.RE +.PP +PAM_DELETE_CRED +.RS 4 +Delete the user\'s credentials\. +.RE +.PP +PAM_REINITIALIZE_CRED +.RS 4 +Fully reinitialize the user\'s credentials\. +.RE +.PP +PAM_REFRESH_CRED +.RS 4 +Extend the lifetime of the existing credentials\. +.RE +.SH "RETURN VALUES" +.PP +PAM_BUF_ERR +.RS 4 +Memory buffer error\. +.RE +.PP +PAM_CRED_ERR +.RS 4 +Failed to set user credentials\. +.RE +.PP +PAM_CRED_EXPIRED +.RS 4 +User credentials are expired\. +.RE +.PP +PAM_CRED_UNAVAIL +.RS 4 +Failed to retrieve user credentials\. +.RE +.PP +PAM_SUCCESS +.RS 4 +Data was successful stored\. +.RE +.PP +PAM_SYSTEM_ERR +.RS 4 +A NULL pointer was submitted as PAM handle, the function was called by a module or another system error occured\. +.RE +.PP +PAM_USER_UNKNOWN +.RS 4 +User is not known to an authentication module\. +.RE +.SH "SEE ALSO" +.PP + +\fBpam_authenticate\fR(3), +\fBpam_open_session\fR(3), +\fBpam_strerror\fR(3) diff --git a/doc/man/pam_setcred.3.xml b/doc/man/pam_setcred.3.xml new file mode 100644 index 00000000..90e23b5c --- /dev/null +++ b/doc/man/pam_setcred.3.xml @@ -0,0 +1,173 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> + +<refentry id="pam_setcred"> + + <refmeta> + <refentrytitle>pam_setcred</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_setcred-name"> + <refname>pam_setcred</refname> + <refpurpose> + establish / delete user credentials + </refpurpose> + </refnamediv> + + <!-- body begins here --> + <refsynopsisdiv> + <funcsynopsis id='pam_setcred-synopsis'> + <funcsynopsisinfo>#include <security/pam_appl.h></funcsynopsisinfo> + <funcprototype> + <funcdef>int <function>pam_setcred</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>int <parameter>flags</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + + <refsect1 id='pam_setcred-description'> + <title>DESCRIPTION</title> + <para> + The <function>pam_setcred</function> function is used to establish, + maintain and delete the credentials of a user. It should be called + after a user has been authenticated and before a session is opened + for the user (with + <citerefentry> + <refentrytitle>pam_open_session</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>). + </para> + + <para> + A credential is something that the user possesses. It is some + property, such as a <emphasis>Kerberos</emphasis> ticket, or a + supplementary group membership that make up the uniqueness of a + given user. On a Linux system the user's <emphasis>UID</emphasis> + and <emphasis>GID</emphasis>'s are credentials too. However, it + has been decided that these properties (along with the default + supplementary groups of which the user is a member) are credentials + that should be set directly by the application and not by PAM. + Such credentials should be established, by the application, prior + to a call to this function. For example, + <citerefentry> + <refentrytitle>initgroups</refentrytitle><manvolnum>2</manvolnum> + </citerefentry> (or equivalent) should have been performed. + </para> + + <para> + Valid <emphasis>flags</emphasis>, any one of which, may be + logically OR'd with <option>PAM_SILENT</option>, are: + </para> + + <variablelist> + <varlistentry> + <term>PAM_ESTABLISH_CRED</term> + <listitem> + <para>Initialize the credentials for the user.</para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_DELETE_CRED</term> + <listitem> + <para>Delete the user's credentials.</para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_REINITIALIZE_CRED</term> + <listitem> + <para>Fully reinitialize the user's credentials.</para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_REFRESH_CRED</term> + <listitem> + <para>Extend the lifetime of the existing credentials.</para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id='pam_setcred-return_values'> + <title>RETURN VALUES</title> + <variablelist> + <varlistentry> + <term>PAM_BUF_ERR</term> + <listitem> + <para> + Memory buffer error. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_CRED_ERR</term> + <listitem> + <para> + Failed to set user credentials. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_CRED_EXPIRED</term> + <listitem> + <para> + User credentials are expired. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_CRED_UNAVAIL</term> + <listitem> + <para> + Failed to retrieve user credentials. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + Data was successful stored. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SYSTEM_ERR</term> + <listitem> + <para> + A NULL pointer was submitted as PAM handle, the + function was called by a module or another system + error occured. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_USER_UNKNOWN</term> + <listitem> + <para> + User is not known to an authentication module. + </para> + </listitem> + </varlistentry> + + </variablelist> + </refsect1> + + <refsect1 id="pam_set_data-see_also"> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam_authenticate</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_open_session</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_strerror</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> + </para> + </refsect1> +</refentry> diff --git a/doc/man/pam_sm_acct_mgmt.3 b/doc/man/pam_sm_acct_mgmt.3 new file mode 100644 index 00000000..563b1239 --- /dev/null +++ b/doc/man/pam_sm_acct_mgmt.3 @@ -0,0 +1,95 @@ +.\" Title: pam_sm_acct_mgmt +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_SM_ACCT_MGMT" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_sm_acct_mgmt - PAM service function for account management +.SH "SYNOPSIS" +.sp +.ft B +.nf +#define PAM_SM_ACCOUNT +.fi +.ft +.sp +.ft B +.nf +#include <security/pam_modules\.h> +.fi +.ft +.HP 32 +.BI "PAM_EXTERN int pam_sm_acct_mgmt(pam_handle_t\ *" "pamh" ", int\ " "flags" ", int\ " "argc" ", const\ char\ **" "argv" ");" +.SH "DESCRIPTION" +.PP +The +\fBpam_sm_acct_mgmt\fR +function is the service module\'s implementation of the +\fBpam_acct_mgmt\fR(3) +interface\. +.PP +This function performs the task of establishing whether the user is permitted to gain access at this time\. It should be understood that the user has previously been validated by an authentication module\. This function checks for other things\. Such things might be: the time of day or the date, the terminal line, remote hostname, etc\. This function may also determine things like the expiration on passwords, and respond that the user change it before continuing\. +.PP +Valid flags, which may be logically OR\'d with +\fIPAM_SILENT\fR, are: +.PP +PAM_SILENT +.RS 4 +Do not emit any messages\. +.RE +.PP +PAM_DISALLOW_NULL_AUTHTOK +.RS 4 +Return +\fBPAM_AUTH_ERR\fR +if the database of authentication tokens for this authentication mechanism has a +\fINULL\fR +entry for the user\. +.RE +.SH "RETURN VALUES" +.PP +PAM_ACCT_EXPIRED +.RS 4 +User account has expired\. +.RE +.PP +PAM_AUTH_ERR +.RS 4 +Authentication failure\. +.RE +.PP +PAM_NEW_AUTHTOK_REQD +.RS 4 +The user\'s authentication token has expired\. Before calling this function again the application will arrange for a new one to be given\. This will likely result in a call to +\fBpam_sm_chauthtok()\fR\. +.RE +.PP +PAM_PERM_DENIED +.RS 4 +Permission denied\. +.RE +.PP +PAM_SUCCESS +.RS 4 +The authentication token was successfully updated\. +.RE +.PP +PAM_USER_UNKNOWN +.RS 4 +User unknown to password service\. +.RE +.SH "SEE ALSO" +.PP + +\fBpam\fR(3), +\fBpam_acct_mgmt\fR(3), +\fBpam_sm_chauthtok\fR(3), +\fBpam_strerror\fR(3), +\fBPAM\fR(8) diff --git a/doc/man/pam_sm_acct_mgmt.3.xml b/doc/man/pam_sm_acct_mgmt.3.xml new file mode 100644 index 00000000..35aa28a8 --- /dev/null +++ b/doc/man/pam_sm_acct_mgmt.3.xml @@ -0,0 +1,155 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> +<refentry id='pam_sm_acct_mgmt'> + <refmeta> + <refentrytitle>pam_sm_acct_mgmt</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_sm_acct_mgmt-name"> + <refname>pam_sm_acct_mgmt</refname> + <refpurpose>PAM service function for account management</refpurpose> + </refnamediv> + +<!-- body begins here --> + + <refsynopsisdiv> + <funcsynopsis id='pam_sm_acct_mgmt-synopsis'> + <funcsynopsisinfo>#define PAM_SM_ACCOUNT</funcsynopsisinfo> + <funcsynopsisinfo>#include <security/pam_modules.h></funcsynopsisinfo> + <funcprototype> + <funcdef>PAM_EXTERN int <function>pam_sm_acct_mgmt</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>int <parameter>flags</parameter></paramdef> + <paramdef>int <parameter>argc</parameter></paramdef> + <paramdef>const char **<parameter>argv</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + + <refsect1 id='pam_sm_acct_mgmt-description'> + <title>DESCRIPTION</title> + <para> + The <function>pam_sm_acct_mgmt</function> function is the service + module's implementation of the + <citerefentry> + <refentrytitle>pam_acct_mgmt</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> interface. + </para> + <para> + This function performs the task of establishing whether the user is + permitted to gain access at this time. It should be understood that + the user has previously been validated by an authentication + module. This function checks for other things. Such things might be: + the time of day or the date, the terminal line, remote hostname, etc. + This function may also determine things like the expiration on + passwords, and respond that the user change it before continuing. + </para> + <para> + Valid flags, which may be logically OR'd with + <emphasis>PAM_SILENT</emphasis>, are: + </para> + <variablelist> + <varlistentry> + <term>PAM_SILENT</term> + <listitem> + <para> + Do not emit any messages. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_DISALLOW_NULL_AUTHTOK</term> + <listitem> + <para> + Return <emphasis remap='B'>PAM_AUTH_ERR</emphasis> if the + database of authentication tokens for this authentication + mechanism has a <emphasis>NULL</emphasis> entry for the user. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id="pam_sm_acct_mgmt-return_values"> + <title>RETURN VALUES</title> + <variablelist> + <varlistentry> + <term>PAM_ACCT_EXPIRED</term> + <listitem> + <para> + User account has expired. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_AUTH_ERR</term> + <listitem> + <para> + Authentication failure. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_NEW_AUTHTOK_REQD</term> + <listitem> + <para> + The user's authentication token has expired. Before calling + this function again the application will arrange for a new + one to be given. This will likely result in a call to + <function>pam_sm_chauthtok()</function>. + + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_PERM_DENIED</term> + <listitem> + <para> + Permission denied. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + The authentication token was successfully updated. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_USER_UNKNOWN</term> + <listitem> + <para> + User unknown to password service. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id='pam_sm_acct_mgmt-see_also'> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_acct_mgmt</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_sm_chauthtok</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_strerror</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>PAM</refentrytitle><manvolnum>8</manvolnum> + </citerefentry> + </para> + </refsect1> +</refentry> diff --git a/doc/man/pam_sm_authenticate.3 b/doc/man/pam_sm_authenticate.3 new file mode 100644 index 00000000..2c262261 --- /dev/null +++ b/doc/man/pam_sm_authenticate.3 @@ -0,0 +1,96 @@ +.\" Title: pam_sm_authenticate +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_SM_AUTHENTICATE" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_sm_authenticate - PAM service function for user authentication +.SH "SYNOPSIS" +.sp +.ft B +.nf +#define PAM_SM_AUTH +.fi +.ft +.sp +.ft B +.nf +#include <security/pam_modules\.h> +.fi +.ft +.HP 35 +.BI "PAM_EXTERN int pam_sm_authenticate(pam_handle_t\ *" "pamh" ", int\ " "flags" ", int\ " "argc" ", const\ char\ **" "argv" ");" +.SH "DESCRIPTION" +.PP +The +\fBpam_sm_authenticate\fR +function is the service module\'s implementation of the +\fBpam_authenticate\fR(3) +interface\. +.PP +This function performs the task of authenticating the user\. +.PP +Valid flags, which may be logically OR\'d with +\fIPAM_SILENT\fR, are: +.PP +PAM_SILENT +.RS 4 +Do not emit any messages\. +.RE +.PP +PAM_DISALLOW_NULL_AUTHTOK +.RS 4 +Return +\fBPAM_AUTH_ERR\fR +if the database of authentication tokens for this authentication mechanism has a +\fINULL\fR +entry for the user\. Without this flag, such a +\fINULL\fR +token will lead to a success without the user being prompted\. +.RE +.SH "RETURN VALUES" +.PP +PAM_AUTH_ERR +.RS 4 +Authentication failure\. +.RE +.PP +PAM_CRED_INSUFFICIENT +.RS 4 +For some reason the application does not have sufficient credentials to authenticate the user\. +.RE +.PP +PAM_AUTHINFO_UNAVAIL +.RS 4 +The modules were not able to access the authentication information\. This might be due to a network or hardware failure etc\. +.RE +.PP +PAM_SUCCESS +.RS 4 +The authentication token was successfully updated\. +.RE +.PP +PAM_USER_UNKNOWN +.RS 4 +The supplied username is not known to the authentication service\. +.RE +.PP +PAM_MAXTRIES +.RS 4 +One or more of the authentication modules has reached its limit of tries authenticating the user\. Do not try again\. +.RE +.SH "SEE ALSO" +.PP + +\fBpam\fR(3), +\fBpam_authenticate\fR(3), +\fBpam_sm_setcred\fR(3), +\fBpam_strerror\fR(3), +\fBPAM\fR(8) diff --git a/doc/man/pam_sm_authenticate.3.xml b/doc/man/pam_sm_authenticate.3.xml new file mode 100644 index 00000000..37c77576 --- /dev/null +++ b/doc/man/pam_sm_authenticate.3.xml @@ -0,0 +1,152 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> +<refentry id='pam_sm_authenticate'> + <refmeta> + <refentrytitle>pam_sm_authenticate</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_sm_authenticate-name"> + <refname>pam_sm_authenticate</refname> + <refpurpose>PAM service function for user authentication</refpurpose> + </refnamediv> + +<!-- body begins here --> + + <refsynopsisdiv> + <funcsynopsis id='pam_sm_authenticate-synopsis'> + <funcsynopsisinfo>#define PAM_SM_AUTH</funcsynopsisinfo> + <funcsynopsisinfo>#include <security/pam_modules.h></funcsynopsisinfo> + <funcprototype> + <funcdef>PAM_EXTERN int <function>pam_sm_authenticate</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>int <parameter>flags</parameter></paramdef> + <paramdef>int <parameter>argc</parameter></paramdef> + <paramdef>const char **<parameter>argv</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + + <refsect1 id='pam_sm_authenticate-description'> + <title>DESCRIPTION</title> + <para> + The <function>pam_sm_authenticate</function> function is the service + module's implementation of the + <citerefentry> + <refentrytitle>pam_authenticate</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> interface. + </para> + <para> + This function performs the task of authenticating the user. + </para> + <para> + Valid flags, which may be logically OR'd with + <emphasis>PAM_SILENT</emphasis>, are: + </para> + <variablelist> + <varlistentry> + <term>PAM_SILENT</term> + <listitem> + <para> + Do not emit any messages. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_DISALLOW_NULL_AUTHTOK</term> + <listitem> + <para> + Return <emphasis remap='B'>PAM_AUTH_ERR</emphasis> if the + database of authentication tokens for this authentication + mechanism has a <emphasis>NULL</emphasis> entry for the user. + Without this flag, such a <emphasis>NULL</emphasis> token + will lead to a success without the user being prompted. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id="pam_sm_authenticate-return_values"> + <title>RETURN VALUES</title> + <variablelist> + <varlistentry> + <term>PAM_AUTH_ERR</term> + <listitem> + <para> + Authentication failure. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_CRED_INSUFFICIENT</term> + <listitem> + <para> + For some reason the application does not have sufficient + credentials to authenticate the user. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_AUTHINFO_UNAVAIL</term> + <listitem> + <para> + The modules were not able to access the authentication + information. This might be due to a network or hardware + failure etc. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + The authentication token was successfully updated. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_USER_UNKNOWN</term> + <listitem> + <para> + The supplied username is not known to the authentication + service. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_MAXTRIES</term> + <listitem> + <para> + One or more of the authentication modules has reached its + limit of tries authenticating the user. Do not try again. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id='pam_sm_authenticate-see_also'> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_authenticate</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_sm_setcred</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_strerror</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>PAM</refentrytitle><manvolnum>8</manvolnum> + </citerefentry> + </para> + </refsect1> +</refentry> diff --git a/doc/man/pam_sm_chauthtok.3 b/doc/man/pam_sm_chauthtok.3 new file mode 100644 index 00000000..57e7c4ed --- /dev/null +++ b/doc/man/pam_sm_chauthtok.3 @@ -0,0 +1,121 @@ +.\" Title: pam_sm_chauthtok +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_SM_CHAUTHTOK" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_sm_chauthtok - PAM service function for authentication token management +.SH "SYNOPSIS" +.sp +.ft B +.nf +#define PAM_SM_PASSWORD +.fi +.ft +.sp +.ft B +.nf +#include <security/pam_modules\.h> +.fi +.ft +.HP 32 +.BI "PAM_EXTERN int pam_sm_chauthtok(pam_handle_t\ *" "pamh" ", int\ " "flags" ", int\ " "argc" ", const\ char\ **" "argv" ");" +.SH "DESCRIPTION" +.PP +The +\fBpam_sm_chauthtok\fR +function is the service module\'s implementation of the +\fBpam_chauthtok\fR(3) +interface\. +.PP +This function is used to (re\-)set the authentication token of the user\. +.PP +Valid flags, which may be logically OR\'d with +\fIPAM_SILENT\fR, are: +.PP +PAM_SILENT +.RS 4 +Do not emit any messages\. +.RE +.PP +PAM_CHANGE_EXPIRED_AUTHTOK +.RS 4 +This argument indicates to the module that the users authentication token (password) should only be changed if it has expired\. This flag is optional and +\fImust\fR +be combined with one of the following two flags\. Note, however, the following two options are +\fImutually exclusive\fR\. +.RE +.PP +PAM_PRELIM_CHECK +.RS 4 +This indicates that the modules are being probed as to their ready status for altering the user\'s authentication token\. If the module requires access to another system over some network it should attempt to verify it can connect to this system on receiving this flag\. If a module cannot establish it is ready to update the user\'s authentication token it should return +\fBPAM_TRY_AGAIN\fR, this information will be passed back to the application\. +.RE +.PP +PAM_UPDATE_AUTHTOK +.RS 4 +This informs the module that this is the call it should change the authorization tokens\. If the flag is logically OR\'d with +\fBPAM_CHANGE_EXPIRED_AUTHTOK\fR, the token is only changed if it has actually expired\. +.RE +.PP +The PAM library calls this function twice in succession\. The first time with +\fBPAM_PRELIM_CHECK\fR +and then, if the module does not return +\fBPAM_TRY_AGAIN\fR, subsequently with +\fBPAM_UPDATE_AUTHTOK\fR\. It is only on the second call that the authorization token is (possibly) changed\. +.SH "RETURN VALUES" +.PP +PAM_AUTHTOK_ERR +.RS 4 +The module was unable to obtain the new authentication token\. +.RE +.PP +PAM_AUTHTOK_RECOVERY_ERR +.RS 4 +The module was unable to obtain the old authentication token\. +.RE +.PP +PAM_AUTHTOK_LOCK_BUSY +.RS 4 +Cannot change the authentication token since it is currently locked\. +.RE +.PP +PAM_AUTHTOK_DISABLE_AGING +.RS 4 +Authentication token aging has been disabled\. +.RE +.PP +PAM_PERM_DENIED +.RS 4 +Permission denied\. +.RE +.PP +PAM_TRY_AGAIN +.RS 4 +Preliminary check was unsuccessful\. Signals an immediate return to the application is desired\. +.RE +.PP +PAM_SUCCESS +.RS 4 +The authentication token was successfully updated\. +.RE +.PP +PAM_USER_UNKNOWN +.RS 4 +User unknown to password service\. +.RE +.SH "SEE ALSO" +.PP + +\fBpam\fR(3), +\fBpam_chauthtok\fR(3), +\fBpam_sm_chauthtok\fR(3), +\fBpam_strerror\fR(3), +\fBPAM\fR(8) diff --git a/doc/man/pam_sm_chauthtok.3.xml b/doc/man/pam_sm_chauthtok.3.xml new file mode 100644 index 00000000..c36a0baf --- /dev/null +++ b/doc/man/pam_sm_chauthtok.3.xml @@ -0,0 +1,200 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> +<refentry id='pam_sm_chauthtok'> + <refmeta> + <refentrytitle>pam_sm_chauthtok</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_sm_chauthtok-name"> + <refname>pam_sm_chauthtok</refname> + <refpurpose>PAM service function for authentication token management</refpurpose> + </refnamediv> + +<!-- body begins here --> + + <refsynopsisdiv> + <funcsynopsis id='pam_sm_chauthtok-synopsis'> + <funcsynopsisinfo>#define PAM_SM_PASSWORD</funcsynopsisinfo> + <funcsynopsisinfo>#include <security/pam_modules.h></funcsynopsisinfo> + <funcprototype> + <funcdef>PAM_EXTERN int <function>pam_sm_chauthtok</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>int <parameter>flags</parameter></paramdef> + <paramdef>int <parameter>argc</parameter></paramdef> + <paramdef>const char **<parameter>argv</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + + <refsect1 id='pam_sm_chauthtok-description'> + <title>DESCRIPTION</title> + <para> + The <function>pam_sm_chauthtok</function> function is the service + module's implementation of the + <citerefentry> + <refentrytitle>pam_chauthtok</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> interface. + </para> + <para> + This function is used to (re-)set the authentication token of the user. + </para> + <para> + Valid flags, which may be logically OR'd with + <emphasis>PAM_SILENT</emphasis>, are: + </para> + <variablelist> + <varlistentry> + <term>PAM_SILENT</term> + <listitem> + <para> + Do not emit any messages. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_CHANGE_EXPIRED_AUTHTOK</term> + <listitem> + <para> + This argument indicates to the module that the users + authentication token (password) should only be changed if + it has expired. This flag is optional and + <emphasis>must</emphasis> be combined with one of the + following two flags. Note, however, the following two options + are <emphasis>mutually exclusive</emphasis>. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_PRELIM_CHECK</term> + <listitem> + <para> + This indicates that the modules are being probed as to + their ready status for altering the user's authentication + token. If the module requires access to another system over + some network it should attempt to verify it can connect to + this system on receiving this flag. If a module cannot establish + it is ready to update the user's authentication token it should + return <emphasis remap='B'>PAM_TRY_AGAIN</emphasis>, this + information will be passed back to the application. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_UPDATE_AUTHTOK</term> + <listitem> + <para> + This informs the module that this is the call it should change + the authorization tokens. If the flag is logically OR'd with + <emphasis remap='B'>PAM_CHANGE_EXPIRED_AUTHTOK</emphasis>, the + token is only changed if it has actually expired. + </para> + </listitem> + </varlistentry> + </variablelist> + <para> + The PAM library calls this function twice in succession. The first + time with <emphasis remap='B'>PAM_PRELIM_CHECK</emphasis> and then, + if the module does not return + <emphasis remap='B'>PAM_TRY_AGAIN</emphasis>, subsequently with + <emphasis remap='B'>PAM_UPDATE_AUTHTOK</emphasis>. It is only on + the second call that the authorization token is (possibly) changed. + </para> + </refsect1> + + <refsect1 id="pam_sm_chauthtok-return_values"> + <title>RETURN VALUES</title> + <variablelist> + <varlistentry> + <term>PAM_AUTHTOK_ERR</term> + <listitem> + <para> + The module was unable to obtain the new authentication token. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_AUTHTOK_RECOVERY_ERR</term> + <listitem> + <para> + The module was unable to obtain the old authentication token. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_AUTHTOK_LOCK_BUSY</term> + <listitem> + <para> + Cannot change the authentication token since it is currently + locked. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_AUTHTOK_DISABLE_AGING</term> + <listitem> + <para> + Authentication token aging has been disabled. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_PERM_DENIED</term> + <listitem> + <para> + Permission denied. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_TRY_AGAIN</term> + <listitem> + <para> + Preliminary check was unsuccessful. Signals an immediate + return to the application is desired. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + The authentication token was successfully updated. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_USER_UNKNOWN</term> + <listitem> + <para> + User unknown to password service. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id='pam_sm_chauthtok-see_also'> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_chauthtok</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_sm_chauthtok</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_strerror</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>PAM</refentrytitle><manvolnum>8</manvolnum> + </citerefentry> + </para> + </refsect1> +</refentry> diff --git a/doc/man/pam_sm_close_session.3 b/doc/man/pam_sm_close_session.3 new file mode 100644 index 00000000..1078d5aa --- /dev/null +++ b/doc/man/pam_sm_close_session.3 @@ -0,0 +1,64 @@ +.\" Title: pam_sm_close_session +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_SM_CLOSE_SESSION" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_sm_close_session - PAM service function to terminate session management +.SH "SYNOPSIS" +.sp +.ft B +.nf +#define PAM_SM_SESSION +.fi +.ft +.sp +.ft B +.nf +#include <security/pam_modules\.h> +.fi +.ft +.HP 36 +.BI "PAM_EXTERN int pam_sm_close_session(pam_handle_t\ *" "pamh" ", int\ " "flags" ", int\ " "argc" ", const\ char\ **" "argv" ");" +.SH "DESCRIPTION" +.PP +The +\fBpam_sm_close_session\fR +function is the service module\'s implementation of the +\fBpam_close_session\fR(3) +interface\. +.PP +This function is called to terminate a session\. The only valid value for +\fIflags\fR +is zero or: +.PP +PAM_SILENT +.RS 4 +Do not emit any messages\. +.RE +.SH "RETURN VALUES" +.PP +PAM_SESSION_ERR +.RS 4 +Cannot make/remove an entry for the specified session\. +.RE +.PP +PAM_SUCCESS +.RS 4 +The session was successfully terminated\. +.RE +.SH "SEE ALSO" +.PP + +\fBpam\fR(3), +\fBpam_close_session\fR(3), +\fBpam_sm_close_session\fR(3), +\fBpam_strerror\fR(3), +\fBPAM\fR(8) diff --git a/doc/man/pam_sm_close_session.3.xml b/doc/man/pam_sm_close_session.3.xml new file mode 100644 index 00000000..f2e67185 --- /dev/null +++ b/doc/man/pam_sm_close_session.3.xml @@ -0,0 +1,100 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-close.org/docbook/xml/4.1.2/docbookx.dtd"> +<refentry id='pam_sm_close_session'> + <refmeta> + <refentrytitle>pam_sm_close_session</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_sm_close_session-name"> + <refname>pam_sm_close_session</refname> + <refpurpose>PAM service function to terminate session management</refpurpose> + </refnamediv> + +<!-- body begins here --> + + <refsynopsisdiv> + <funcsynopsis id='pam_sm_close_session-synopsis'> + <funcsynopsisinfo>#define PAM_SM_SESSION</funcsynopsisinfo> + <funcsynopsisinfo>#include <security/pam_modules.h></funcsynopsisinfo> + <funcprototype> + <funcdef>PAM_EXTERN int <function>pam_sm_close_session</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>int <parameter>flags</parameter></paramdef> + <paramdef>int <parameter>argc</parameter></paramdef> + <paramdef>const char **<parameter>argv</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + + <refsect1 id='pam_sm_close_session-description'> + <title>DESCRIPTION</title> + <para> + The <function>pam_sm_close_session</function> function is the service + module's implementation of the + <citerefentry> + <refentrytitle>pam_close_session</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> interface. + </para> + <para> + This function is called to terminate a session. The only valid + value for <varname role='parameter'>flags</varname> is zero or: + </para> + <variablelist> + <varlistentry> + <term>PAM_SILENT</term> + <listitem> + <para> + Do not emit any messages. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id="pam_sm_close_session-return_values"> + <title>RETURN VALUES</title> + <variablelist> + <varlistentry> + <term>PAM_SESSION_ERR</term> + <listitem> + <para> + Cannot make/remove an entry for the specified session. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + The session was successfully terminated. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id='pam_sm_close_session-see_also'> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_close_session</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_sm_close_session</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_strerror</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>PAM</refentrytitle><manvolnum>8</manvolnum> + </citerefentry> + </para> + </refsect1> +</refentry> diff --git a/doc/man/pam_sm_open_session.3 b/doc/man/pam_sm_open_session.3 new file mode 100644 index 00000000..ccaf403e --- /dev/null +++ b/doc/man/pam_sm_open_session.3 @@ -0,0 +1,64 @@ +.\" Title: pam_sm_open_session +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_SM_OPEN_SESSION" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_sm_open_session - PAM service function to start session management +.SH "SYNOPSIS" +.sp +.ft B +.nf +#define PAM_SM_SESSION +.fi +.ft +.sp +.ft B +.nf +#include <security/pam_modules\.h> +.fi +.ft +.HP 35 +.BI "PAM_EXTERN int pam_sm_open_session(pam_handle_t\ *" "pamh" ", int\ " "flags" ", int\ " "argc" ", const\ char\ **" "argv" ");" +.SH "DESCRIPTION" +.PP +The +\fBpam_sm_open_session\fR +function is the service module\'s implementation of the +\fBpam_open_session\fR(3) +interface\. +.PP +This function is called to commence a session\. The only valid value for +\fIflags\fR +is zero or: +.PP +PAM_SILENT +.RS 4 +Do not emit any messages\. +.RE +.SH "RETURN VALUES" +.PP +PAM_SESSION_ERR +.RS 4 +Cannot make/remove an entry for the specified session\. +.RE +.PP +PAM_SUCCESS +.RS 4 +The session was successfully started\. +.RE +.SH "SEE ALSO" +.PP + +\fBpam\fR(3), +\fBpam_open_session\fR(3), +\fBpam_sm_close_session\fR(3), +\fBpam_strerror\fR(3), +\fBPAM\fR(8) diff --git a/doc/man/pam_sm_open_session.3.xml b/doc/man/pam_sm_open_session.3.xml new file mode 100644 index 00000000..0851c345 --- /dev/null +++ b/doc/man/pam_sm_open_session.3.xml @@ -0,0 +1,100 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> +<refentry id='pam_sm_open_session'> + <refmeta> + <refentrytitle>pam_sm_open_session</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_sm_open_session-name"> + <refname>pam_sm_open_session</refname> + <refpurpose>PAM service function to start session management</refpurpose> + </refnamediv> + +<!-- body begins here --> + + <refsynopsisdiv> + <funcsynopsis id='pam_sm_open_session-synopsis'> + <funcsynopsisinfo>#define PAM_SM_SESSION</funcsynopsisinfo> + <funcsynopsisinfo>#include <security/pam_modules.h></funcsynopsisinfo> + <funcprototype> + <funcdef>PAM_EXTERN int <function>pam_sm_open_session</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>int <parameter>flags</parameter></paramdef> + <paramdef>int <parameter>argc</parameter></paramdef> + <paramdef>const char **<parameter>argv</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + + <refsect1 id='pam_sm_open_session-description'> + <title>DESCRIPTION</title> + <para> + The <function>pam_sm_open_session</function> function is the service + module's implementation of the + <citerefentry> + <refentrytitle>pam_open_session</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> interface. + </para> + <para> + This function is called to commence a session. The only valid + value for <varname role='parameter'>flags</varname> is zero or: + </para> + <variablelist> + <varlistentry> + <term>PAM_SILENT</term> + <listitem> + <para> + Do not emit any messages. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id="pam_sm_open_session-return_values"> + <title>RETURN VALUES</title> + <variablelist> + <varlistentry> + <term>PAM_SESSION_ERR</term> + <listitem> + <para> + Cannot make/remove an entry for the specified session. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + The session was successfully started. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id='pam_sm_open_session-see_also'> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_open_session</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_sm_close_session</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_strerror</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>PAM</refentrytitle><manvolnum>8</manvolnum> + </citerefentry> + </para> + </refsect1> +</refentry> diff --git a/doc/man/pam_sm_setcred.3 b/doc/man/pam_sm_setcred.3 new file mode 100644 index 00000000..ce875631 --- /dev/null +++ b/doc/man/pam_sm_setcred.3 @@ -0,0 +1,113 @@ +.\" Title: pam_sm_setcred +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_SM_SETCRED" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_sm_setcred - PAM service function to alter credentials +.SH "SYNOPSIS" +.sp +.ft B +.nf +#define PAM_SM_AUTH +.fi +.ft +.sp +.ft B +.nf +#include <security/pam_modules\.h> +.fi +.ft +.HP 30 +.BI "PAM_EXTERN int pam_sm_setcred(pam_handle_t\ *" "pamh" ", int\ " "flags" ", int\ " "argc" ", const\ char\ **" "argv" ");" +.SH "DESCRIPTION" +.PP +The +\fBpam_sm_setcred\fR +function is the service module\'s implementation of the +\fBpam_setcred\fR(3) +interface\. +.PP +This function performs the task of altering the credentials of the user with respect to the corresponding authorization scheme\. Generally, an authentication module may have access to more information about a user than their authentication token\. This function is used to make such information available to the application\. It should only be called +\fIafter\fR +the user has been authenticated but before a session has been established\. +.PP +Valid flags, which may be logically OR\'d with +\fIPAM_SILENT\fR, are: +.PP +PAM_SILENT +.RS 4 +Do not emit any messages\. +.RE +.PP +PAM_DELETE_CRED +.RS 4 +Delete the credentials associated with the authentication service\. +.RE +.PP +PAM_REINITIALIZE_CRED +.RS 4 +Reinitialize the user credentials\. +.RE +.PP +PAM_REFRESH_CRED +.RS 4 +Extend the lifetime of the user credentials\. +.RE +.PP +The way the +\fBauth\fR +stack is navigated in order to evaluate the +\fBpam_setcred\fR() function call, independent of the +\fBpam_sm_setcred\fR() return codes, is exactly the same way that it was navigated when evaluating the +\fBpam_authenticate\fR() library call\. Typically, if a stack entry was ignored in evaluating +\fBpam_authenticate\fR(), it will be ignored when libpam evaluates the +\fBpam_setcred\fR() function call\. Otherwise, the return codes from each module specific +\fBpam_sm_setcred\fR() call are treated as +\fBrequired\fR\. +.SH "RETURN VALUES" +.PP +PAM_CRED_UNAVAIL +.RS 4 +This module cannot retrieve the user\'s credentials\. +.RE +.PP +PAM_CRED_EXPIRED +.RS 4 +The user\'s credentials have expired\. +.RE +.PP +PAM_CRED_ERR +.RS 4 +This module was unable to set the credentials of the user\. +.RE +.PP +PAM_SUCCESS +.RS 4 +The user credential was successfully set\. +.RE +.PP +PAM_USER_UNKNOWN +.RS 4 +The user is not known to this authentication module\. +.RE +.PP +These, non\-\fIPAM_SUCCESS\fR, return values will typically lead to the credential stack +\fIfailing\fR\. The first such error will dominate in the return value of +\fBpam_setcred\fR()\. +.SH "SEE ALSO" +.PP + +\fBpam\fR(3), +\fBpam_authenticate\fR(3), +\fBpam_setcred\fR(3), +\fBpam_sm_authenticate\fR(3), +\fBpam_strerror\fR(3), +\fBPAM\fR(8) diff --git a/doc/man/pam_sm_setcred.3.xml b/doc/man/pam_sm_setcred.3.xml new file mode 100644 index 00000000..e4809ad7 --- /dev/null +++ b/doc/man/pam_sm_setcred.3.xml @@ -0,0 +1,179 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> +<refentry id='pam_sm_setcred'> + <refmeta> + <refentrytitle>pam_sm_setcred</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_sm_setcred-name"> + <refname>pam_sm_setcred</refname> + <refpurpose>PAM service function to alter credentials</refpurpose> + </refnamediv> + +<!-- body begins here --> + + <refsynopsisdiv> + <funcsynopsis id='pam_sm_setcred-synopsis'> + <funcsynopsisinfo>#define PAM_SM_AUTH</funcsynopsisinfo> + <funcsynopsisinfo>#include <security/pam_modules.h></funcsynopsisinfo> + <funcprototype> + <funcdef>PAM_EXTERN int <function>pam_sm_setcred</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>int <parameter>flags</parameter></paramdef> + <paramdef>int <parameter>argc</parameter></paramdef> + <paramdef>const char **<parameter>argv</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + + <refsect1 id='pam_sm_setcred-description'> + <title>DESCRIPTION</title> + <para> + The <function>pam_sm_setcred</function> function is the service + module's implementation of the + <citerefentry> + <refentrytitle>pam_setcred</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> interface. + </para> + <para> + This function performs the task of altering the credentials of the + user with respect to the corresponding authorization + scheme. Generally, an authentication module may have access to more + information about a user than their authentication token. This + function is used to make such information available to the + application. It should only be called <emphasis>after</emphasis> the + user has been authenticated but before a session has been established. + </para> + <para> + Valid flags, which may be logically OR'd with + <emphasis>PAM_SILENT</emphasis>, are: + </para> + <variablelist> + <varlistentry> + <term>PAM_SILENT</term> + <listitem> + <para> + Do not emit any messages. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_DELETE_CRED</term> + <listitem> + <para> + Delete the credentials associated with the authentication service. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_REINITIALIZE_CRED</term> + <listitem> + <para> + Reinitialize the user credentials. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_REFRESH_CRED</term> + <listitem> + <para> + Extend the lifetime of the user credentials. + </para> + </listitem> + </varlistentry> + </variablelist> + <para> + The way the <emphasis remap='B'>auth</emphasis> stack is + navigated in order to evaluate the <function>pam_setcred</function>() + function call, independent of the <function>pam_sm_setcred</function>() + return codes, is exactly the same way that it was navigated when + evaluating the <function>pam_authenticate</function>() library + call. Typically, if a stack entry was ignored in evaluating + <function>pam_authenticate</function>(), it will be ignored when + libpam evaluates the <function>pam_setcred</function>() function + call. Otherwise, the return codes from each module specific + <function>pam_sm_setcred</function>() call are treated as + <emphasis remap='B'>required</emphasis>. + </para> + </refsect1> + + <refsect1 id="pam_sm_setcred-return_values"> + <title>RETURN VALUES</title> + <variablelist> + <varlistentry> + <term>PAM_CRED_UNAVAIL</term> + <listitem> + <para> + This module cannot retrieve the user's credentials. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_CRED_EXPIRED</term> + <listitem> + <para> + The user's credentials have expired. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_CRED_ERR</term> + <listitem> + <para> + This module was unable to set the credentials of the user. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + The user credential was successfully set. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_USER_UNKNOWN</term> + <listitem> + <para> + The user is not known to this authentication module. + </para> + </listitem> + </varlistentry> + </variablelist> + <para> + These, non-<emphasis>PAM_SUCCESS</emphasis>, return values will + typically lead to the credential stack <emphasis>failing</emphasis>. + The first such error will dominate in the return value of + <function>pam_setcred</function>(). + </para> + </refsect1> + + <refsect1 id='pam_sm_setcred-see_also'> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_authenticate</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_setcred</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_sm_authenticate</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_strerror</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>PAM</refentrytitle><manvolnum>8</manvolnum> + </citerefentry> + </para> + </refsect1> +</refentry> diff --git a/doc/man/pam_start.3 b/doc/man/pam_start.3 new file mode 100644 index 00000000..c2273b63 --- /dev/null +++ b/doc/man/pam_start.3 @@ -0,0 +1,88 @@ +.\" Title: pam_start +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_START" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_start - initialization of PAM transaction +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <security/pam_appl\.h> +.fi +.ft +.HP 14 +.BI "int pam_start(const\ char\ *" "service_name" ", const\ char\ *" "user" ", const\ struct\ pam_conv\ *" "pam_conversation" ", pam_handle_t\ **" "pamh" ");" +.SH "DESCRIPTION" +.PP +The +\fBpam_start\fR +function creates the PAM context and initiates the PAM transaction\. It is the first of the PAM functions that needs to be called by an application\. The transaction state is contained entirely within the structure identified by this handle, so it is possible to have multiple transactions in parallel\. But it is not possible to use the same handle for different transactions, a new one is needed for every new context\. +.PP +The +\fIservice_name\fR +argument specifies the name of the service to apply and will be stored as PAM_SERVICE item in the new context\. The policy for the service will be read from the file +\fI/etc/pam\.d/service_name\fR +or, if that file does not exist, from +\fI/etc/pam\.conf\fR\. +.PP +The +\fIuser\fR +argument can specify the name of the target user and will be stored as PAM_USER item\. If the argument is NULL, the module has to ask for this item if necessary\. +.PP +The +\fIpam_conversation\fR +argument points to a +\fIstruct pam_conv\fR +describing the conversation function to use\. An application must provide this for direct communication between a loaded module and the application\. +.PP +Following a successful return (PAM_SUCCESS) the contents of +\fIpamh\fR +is a handle that contains the PAM context for successive calls to the PAM functions\. In an error case is the content of +\fIpamh\fR +undefined\. +.PP +The +\fIpam_handle_t\fR +is a blind structure and the application should not attempt to probe it directly for information\. Instead the PAM library provides the functions +\fBpam_set_item\fR(3) +and +\fBpam_get_item\fR(3)\. The PAM handle cannot be used for mulitiple authentications at the same time as long as +\fBpam_end\fR +was not called on it before\. +.SH "RETURN VALUES" +.PP +PAM_ABORT +.RS 4 +General failure\. +.RE +.PP +PAM_BUF_ERR +.RS 4 +Memory buffer error\. +.RE +.PP +PAM_SUCCESS +.RS 4 +Transaction was successful created\. +.RE +.PP +PAM_SYSTEM_ERR +.RS 4 +System error, for example a NULL pointer was submitted instead of a pointer to data\. +.RE +.SH "SEE ALSO" +.PP + +\fBpam_get_data\fR(3), +\fBpam_set_data\fR(3), +\fBpam_end\fR(3), +\fBpam_strerror\fR(3) diff --git a/doc/man/pam_start.3.xml b/doc/man/pam_start.3.xml new file mode 100644 index 00000000..9b370f52 --- /dev/null +++ b/doc/man/pam_start.3.xml @@ -0,0 +1,147 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> + +<refentry id='pam_start'> + + <refmeta> + <refentrytitle>pam_start</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_start-name"> + <refname>pam_start</refname> + <refpurpose>initialization of PAM transaction</refpurpose> + </refnamediv> + +<!-- body begins here --> + + <refsynopsisdiv> + <funcsynopsis id="pam_start-synopsis"> + <funcsynopsisinfo>#include <security/pam_appl.h></funcsynopsisinfo> + <funcprototype> + <funcdef>int <function>pam_start</function></funcdef> + <paramdef>const char *<parameter>service_name</parameter></paramdef> + <paramdef>const char *<parameter>user</parameter></paramdef> + <paramdef>const struct pam_conv *<parameter>pam_conversation</parameter></paramdef> + <paramdef>pam_handle_t **<parameter>pamh</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + + <refsect1 id="pam_start-description"> + <title>DESCRIPTION</title> + <para> + The <function>pam_start</function> function creates the PAM context + and initiates the PAM transaction. It is the first of the PAM + functions that needs to be called by an application. The transaction + state is contained entirely within the structure identified by this + handle, so it is possible to have multiple transactions in parallel. + But it is not possible to use the same handle for different + transactions, a new one is needed for every new context. + </para> + + <para> + The <emphasis>service_name</emphasis> argument specifies the name + of the service to apply and will be stored as PAM_SERVICE item in + the new context. The policy for the service will be read from the + file <filename>/etc/pam.d/service_name</filename> or, if that file + does not exist, from <filename>/etc/pam.conf</filename>. + </para> + + <para> + The <emphasis>user</emphasis> argument can specify the name + of the target user and will be stored as PAM_USER item. If + the argument is NULL, the module has to ask for this item if + necessary. + </para> + + <para> + The <emphasis>pam_conversation</emphasis> argument points to + a <emphasis>struct pam_conv</emphasis> describing the + conversation function to use. An application must provide this + for direct communication between a loaded module and the + application. + </para> + + <para> + Following a successful return (PAM_SUCCESS) the contents of + <emphasis>pamh</emphasis> is a handle that contains the PAM + context for successive calls to the PAM functions. In an error + case is the content of <emphasis>pamh</emphasis> undefined. + </para> + + <para> + The <emphasis>pam_handle_t</emphasis> is a blind structure and + the application should not attempt to probe it directly for + information. Instead the PAM library provides the functions + <citerefentry> + <refentrytitle>pam_set_item</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> and + <citerefentry> + <refentrytitle>pam_get_item</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>. + The PAM handle cannot be used for mulitiple authentications at the + same time as long as <function>pam_end</function> was not called on + it before. + </para> + </refsect1> + <refsect1 id="pam_start-return_values"> + <title>RETURN VALUES</title> + <variablelist> + <varlistentry> + <term>PAM_ABORT</term> + <listitem> + <para> + General failure. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_BUF_ERR</term> + <listitem> + <para> + Memory buffer error. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + Transaction was successful created. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SYSTEM_ERR</term> + <listitem> + <para> + System error, for example a NULL pointer was submitted + instead of a pointer to data. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id="pam_start-see_also"> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam_get_data</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_set_data</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_end</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_strerror</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> + </para> + </refsect1> +</refentry> diff --git a/doc/man/pam_strerror.3 b/doc/man/pam_strerror.3 new file mode 100644 index 00000000..785cd69e --- /dev/null +++ b/doc/man/pam_strerror.3 @@ -0,0 +1,36 @@ +.\" Title: pam_strerror +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_STRERROR" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_strerror - return string describing PAM error code +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <security/pam_appl\.h> +.fi +.ft +.HP 25 +.BI "const char *pam_strerror(pam_handle_t\ *" "pamh" ", int\ " "errnum" ");" +.SH "DESCRIPTION" +.PP +The +\fBpam_strerror\fR +function returns a pointer to a string describing the error code passed in the argument +\fIerrnum\fR, possibly using the LC_MESSAGES part of the current locale to select the appropriate language\. This string must not be modified by the application\. No library function will modify this string\. +.SH "RETURN VALUES" +.PP +This function returns always a pointer to a string\. +.SH "SEE ALSO" +.PP + +\fBpam\fR(8) diff --git a/doc/man/pam_strerror.3.xml b/doc/man/pam_strerror.3.xml new file mode 100644 index 00000000..954e131d --- /dev/null +++ b/doc/man/pam_strerror.3.xml @@ -0,0 +1,58 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> + +<refentry id='pam_strerror'> + + <refmeta> + <refentrytitle>pam_strerror</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_strerror-name"> + <refname>pam_strerror</refname> + <refpurpose>return string describing PAM error code</refpurpose> + </refnamediv> + +<!-- body begins here --> + + <refsynopsisdiv> + <funcsynopsis id="pam_strerror-synopsis"> + <funcsynopsisinfo>#include <security/pam_appl.h></funcsynopsisinfo> + <funcprototype> + <funcdef>const char *<function>pam_strerror</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>int <parameter>errnum</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + + <refsect1 id="pam_strerror-description"> + <title>DESCRIPTION</title> + <para> + The <function>pam_strerror</function> function returns a pointer to + a string describing the error code passed in the argument + <emphasis>errnum</emphasis>, possibly using the LC_MESSAGES part of + the current locale to select the appropriate language. This string + must not be modified by the application. No library function will + modify this string. + </para> + </refsect1> + <refsect1 id="pam_strerror-return_values"> + <title>RETURN VALUES</title> + <para> + This function returns always a pointer to a string. + </para> + </refsect1> + + <refsect1 id="pam_strerror-see_also"> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam</refentrytitle><manvolnum>8</manvolnum> + </citerefentry> + </para> + </refsect1> +</refentry> diff --git a/doc/man/pam_syslog.3 b/doc/man/pam_syslog.3 new file mode 100644 index 00000000..d606746a --- /dev/null +++ b/doc/man/pam_syslog.3 @@ -0,0 +1,61 @@ +.\" Title: pam_syslog +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_SYSLOG" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_syslog, pam_vsyslog - send messages to the system logger +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <syslog\.h> +.fi +.ft +.sp +.ft B +.nf +#include <security/pam_ext\.h> +.fi +.ft +.HP 16 +.BI "void pam_syslog(pam_handle_t\ *" "pamh" ", int\ " "priority" ", const\ char\ *" "fmt" ", " "\.\.\." ");" +.HP 17 +.BI "void pam_vsyslog(pam_handle_t\ *" "pamh" ", int\ " "priority" ", const\ char\ *" "fmt" ", va_list\ " "args" ");" +.SH "DESCRIPTION" +.PP +The +\fBpam_syslog\fR +function logs messages using +\fBsyslog\fR(3) +and is intended for internal use by Linux\-PAM and PAM service modules\. The +\fIpriority\fR +argument is formed by ORing the facility and the level values as documented in the +\fBsyslog\fR(3) +manual page\. +.PP +The +\fBpam_vsyslog\fR +function performs the same task as +\fBpam_syslog()\fR +with the difference that it takes a set of arguments which have been obtained using the +\fBstdarg\fR(3) +variable argument list macros\. +.SH "SEE ALSO" +.PP + +\fBpam\fR(8) +.SH "STANDARDS" +.PP +The +\fBpam_syslog\fR +and +\fBpam_vsyslog\fR +functions are Linux\-PAM extensions\. diff --git a/doc/man/pam_syslog.3.xml b/doc/man/pam_syslog.3.xml new file mode 100644 index 00000000..7c5b166a --- /dev/null +++ b/doc/man/pam_syslog.3.xml @@ -0,0 +1,82 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" + "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> + +<refentry id="pam_syslog"> + + <refmeta> + <refentrytitle>pam_syslog</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_syslog-name"> + <refname>pam_syslog</refname> + <refname>pam_vsyslog</refname> + <refpurpose>send messages to the system logger</refpurpose> + </refnamediv> + +<!-- body begins here --> + + <refsynopsisdiv id="pam_syslog-synopsis"> + <funcsynopsis> + <funcsynopsisinfo>#include <syslog.h></funcsynopsisinfo> + <funcsynopsisinfo>#include <security/pam_ext.h></funcsynopsisinfo> + <funcprototype> + <funcdef>void <function>pam_syslog</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>int <parameter>priority</parameter></paramdef> + <paramdef>const char *<parameter>fmt</parameter></paramdef> + <paramdef><parameter>...</parameter></paramdef> + </funcprototype> + <funcprototype> + <funcdef>void <function>pam_vsyslog</function></funcdef> + <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef> + <paramdef>int <parameter>priority</parameter></paramdef> + <paramdef>const char *<parameter>fmt</parameter></paramdef> + <paramdef>va_list <parameter>args</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + <refsect1 id='pam_syslog-description'> + <title>DESCRIPTION</title> + <para> + The <function>pam_syslog</function> function logs messages using + <citerefentry> + <refentrytitle>syslog</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> and is intended for internal use by Linux-PAM and + PAM service modules. The <emphasis>priority</emphasis> argument is + formed by ORing the facility and the level values as documented + in the <citerefentry> + <refentrytitle>syslog</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> manual page. + </para> + <para> + The <function>pam_vsyslog</function> function performs the same + task as <function>pam_syslog()</function> with the difference + that it takes a set of arguments which have been obtained using + the <citerefentry> + <refentrytitle>stdarg</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> variable argument list macros. + </para> + </refsect1> + + <refsect1 id='pam_syslog-see_also'> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam</refentrytitle><manvolnum>8</manvolnum> + </citerefentry> + </para> + </refsect1> + + <refsect1 id='pam_syslog-standards'> + <title>STANDARDS</title> + <para> + The <function>pam_syslog</function> and <function>pam_vsyslog</function> + functions are Linux-PAM extensions. + </para> + </refsect1> + +</refentry> diff --git a/doc/man/pam_verror.3 b/doc/man/pam_verror.3 new file mode 100644 index 00000000..6e052ef6 --- /dev/null +++ b/doc/man/pam_verror.3 @@ -0,0 +1 @@ +.so man3/pam_error.3 diff --git a/doc/man/pam_vinfo.3 b/doc/man/pam_vinfo.3 new file mode 100644 index 00000000..79f3a153 --- /dev/null +++ b/doc/man/pam_vinfo.3 @@ -0,0 +1 @@ +.so man3/pam_info.3 diff --git a/doc/man/pam_vprompt.3 b/doc/man/pam_vprompt.3 new file mode 100644 index 00000000..bba0b1d3 --- /dev/null +++ b/doc/man/pam_vprompt.3 @@ -0,0 +1 @@ +.so man3/pam_prompt.3 diff --git a/doc/man/pam_vsyslog.3 b/doc/man/pam_vsyslog.3 new file mode 100644 index 00000000..b987b067 --- /dev/null +++ b/doc/man/pam_vsyslog.3 @@ -0,0 +1 @@ +.so man3/pam_syslog.3 diff --git a/doc/man/pam_xauth_data.3 b/doc/man/pam_xauth_data.3 new file mode 100644 index 00000000..5c4b58fa --- /dev/null +++ b/doc/man/pam_xauth_data.3 @@ -0,0 +1,70 @@ +.\" Title: pam_xauth_data +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "PAM_XAUTH_DATA" "3" "04/16/2008" "Linux-PAM Manual" "Linux-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.SH "NAME" +pam_xauth_data - structure containing X authentication data +.SH "SYNOPSIS" +.sp +.ft B +.nf +#include <security/pam_appl\.h> +.fi +.ft +.sp +.RS 4 +.nf +struct pam_xauth_data { + int namelen; + char *name; + int datalen; + char *data; +}; + +.fi +.RE +.SH "DESCRIPTION" +.PP +The +\fBpam_xauth_data\fR +structure contains X authentication data used to make a connection to an X display\. Using this mechanism, an application can communicate X authentication data to PAM service modules\. This allows modules to make a connection to the user\'s X display in order to label the user\'s session on login, display visual feedback or for other purposes\. +.PP +The +\fIname\fR +field contains the name of the authentication method, such as "MIT\-MAGIC\-COOKIE\-1"\. The +\fInamelen\fR +field contains the length of this string, not including the trailing NUL character\. +.PP +The +\fIdata\fR +field contains the authentication method\-specific data corresponding to the specified name\. The +\fIdatalen\fR +field contains its length in bytes\. +.PP +The X authentication data can be changed with the +\fIPAM_XAUTH_DATA\fR +item\. It can be queried and set with +\fBpam_get_item\fR(3) +and +\fBpam_set_item \fR(3) +respectively\. The value used to set it should be a pointer to a pam_xauth_data structure\. An internal copy of both the structure itself and its fields is made by PAM when setting the item\. +.SH "SEE ALSO" +.PP + +\fBpam_start\fR(3), +\fBpam_get_item\fR(3), +.SH "STANDARDS" +.PP +The +\fBpam_xauth_data\fR +structure and +\fIPAM_XAUTH_DATA\fR +item are Linux\-PAM extensions\. diff --git a/doc/mwg/Linux-PAM_MWG.xml b/doc/mwg/Linux-PAM_MWG.xml new file mode 100644 index 00000000..5a09a7cf --- /dev/null +++ b/doc/mwg/Linux-PAM_MWG.xml @@ -0,0 +1,656 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<book id="mwg"> + <bookinfo> + <title>The Linux-PAM Module Writers' Guide</title> + <authorgroup> + <author> + <firstname>Andrew G.</firstname> + <surname>Morgan</surname> + <email>morgan@kernel.org</email> + </author> + <author> + <firstname>Thorsten</firstname> + <surname>Kukuk</surname> + <email>kukuk@thkukuk.de</email> + </author> + </authorgroup> + <releaseinfo>Version 1.0, 3. April 2008</releaseinfo> + <abstract> + <para> + This manual documents what a programmer needs to know in order + to write a module that conforms to the + <emphasis remap='B'>Linux-PAM</emphasis> standard.It also + discusses some security issues from the point of view of the + module programmer. + </para> + </abstract> + </bookinfo> + + <chapter id="mwg-introduction"> + <title>Introduction</title> + <section id="mwg-introduction-description"> + <title>Description</title> + <para> + <emphasis remap='B'>Linux-PAM</emphasis> (Pluggable Authentication + Modules for Linux) is a library that enables the local system + administrator to choose how individual applications authenticate + users. For an overview of the + <emphasis remap='B'>Linux-PAM</emphasis> library see the + <emphasis>Linux-PAM System Administrators' Guide</emphasis>. + </para> + <para> + A <emphasis remap='B'>Linux-PAM</emphasis> module is a single + executable binary file that can be loaded by the + <emphasis remap='B'>Linux-PAM</emphasis> interface library. + This PAM library is configured locally with a system file, + <filename>/etc/pam.conf</filename>, to authenticate a user + request via the locally available authentication modules. The + modules themselves will usually be located in the directory + <filename>/lib/security</filename> (or + <filename>/lib64/security</filename>, depending on the architecture) + and take the form of dynamically loadable object files (see + <citerefentry> + <refentrytitle>dlopen</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>. Alternatively, the modules can be statically + linked into the <emphasis remap='B'>Linux-PAM</emphasis> library; + this is mostly to allow <emphasis remap='B'>Linux-PAM</emphasis> to + be used on platforms without dynamic linking available, but this is + a <emphasis>deprecated</emphasis> functionality. It is the + <emphasis remap='B'>Linux-PAM</emphasis> interface that is called + by an application and it is the responsibility of the library to + locate, load and call the appropriate functions in a + <emphasis remap='B'>Linux-PAM</emphasis>-module. + </para> + <para> + Except for the immediate purpose of interacting with the user + (entering a password etc..) the module should never call the + application directly. This exception requires a "conversation + mechanism" which is documented below. + </para> + </section> + + <section id="mwg-introducton-synopsis"> + <title>Synopsis</title> + <programlisting> +#include <security/pam_modules.h> + +gcc -fPIC -c pam_module.c +gcc -shared -o pam_module.so pam_module.o -lpam + </programlisting> + </section> + </chapter> + + <chapter id="mwg-expected-by-module"> + <title>What can be expected by the module</title> + <para> + Here we list the interface that the conventions that all + <emphasis remap='B'>Linux-PAM</emphasis> modules must adhere to. + </para> + <section id="mwg-expected-by-module-item"> + <title> + Getting and setting <emphasis>PAM_ITEM</emphasis>s and + <emphasis>data</emphasis> + </title> + <para> + First, we cover what the module should expect from the + <emphasis remap='B'>Linux-PAM</emphasis> library and a + <emphasis remap='B'>Linux-PAM</emphasis> aware application. + Essesntially this is the <filename>libpam.*</filename> library. + </para> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_set_data.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_get_data.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_set_item.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_get_item.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_get_user.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_conv.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_putenv.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_getenv.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_getenvlist.xml"/> + </section> + <section id="mwg-expected-by-module-other"> + <title> + Other functions provided by <filename>libpam</filename> + </title> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_strerror.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_fail_delay.xml"/> + </section> + </chapter> + + <chapter id="mwg-expected-of-module"> + <title>What is expected of a module</title> + <para> + The module must supply a sub-set of the six functions listed + below. Together they define the function of a + <emphasis remap='B'>Linux-PAM module</emphasis>. Module developers + are strongly urged to read the comments on security that follow + this list. + </para> + <section id="mwg-expected-of-module-overview"> + <title>Overview</title> + <para> + The six module functions are grouped into four independent + management groups. These groups are as follows: + <emphasis>authentication</emphasis>, <emphasis>account</emphasis>, + <emphasis>session</emphasis> and <emphasis>password</emphasis>. + To be properly defined, a module must define all functions within + at least one of these groups. A single module may contain the + necessary functions for <emphasis>all</emphasis> four groups. + </para> + <section id="mwg-expected-of-module-overview-1"> + <title>Functional independence</title> + <para> + The independence of the four groups of service a module can + offer means that the module should allow for the possibility + that any one of these four services may legitimately be called + in any order. Thus, the module writer should consider the + appropriateness of performing a service without the prior + success of some other part of the module. + </para> + <para> + As an informative example, consider the possibility that an + application applies to change a user's authentication token, + without having first requested that + <emphasis remap='B'>Linux-PAM</emphasis> authenticate the + user. In some cases this may be deemed appropriate: when + <command>root</command> wants to change the authentication + token of some lesser user. In other cases it may not be + appropriate: when <command>joe</command> maliciously wants + to reset <command>alice</command>'s password; or when anyone + other than the user themself wishes to reset their + <emphasis>KERBEROS</emphasis> authentication token. A policy + for this action should be defined by any reasonable + authentication scheme, the module writer should consider + this when implementing a given module. + </para> + </section> + <section id="mwg-expected-of-module-overview-2"> + <title>Minimizing administration problems</title> + <para> + To avoid system administration problems and the poor + construction of a <filename>/etc/pam.conf</filename> file, + the module developer may define all six of the following + functions. For those functions that would not be called, + the module should return <errorname>PAM_SERVICE_ERR</errorname> + and write an appropriate message to the system log. When + this action is deemed inappropriate, the function would + simply return <errorname>PAM_IGNORE</errorname>. + </para> + </section> + <section id="mwg-expected-of-module-overview-3"> + <title>Arguments supplied to the module</title> + <para> + The <parameter>flags</parameter> argument of each of + the following functions can be logically OR'd with + <parameter>PAM_SILENT</parameter>, which is used to inform the + module to not pass any <emphasis>text</emphasis> (errors or + warnings) application. + </para> + <para> + The <parameter>argc</parameter> and <parameter>argv</parameter> + arguments are taken from the line appropriate to this + module---that is, with the <emphasis>service_name</emphasis> + matching that of the application---in the configuration file + (see the <emphasis remap='B'>Linux-PAM</emphasis> + System Administrators' Guide). Together these two parameters + provide the number of arguments and an array of pointers to + the individual argument tokens. This will be familiar to C + programmers as the ubiquitous method of passing command arguments + to the function <function>main()</function>. Note, however, that + the first argument (<parameter>argv[0]</parameter>) is a true + argument and <emphasis>not</emphasis> the name of the module. + </para> + </section> + </section> + <section id="mwg-expected-of-module-auth"> + <title>Authentication management</title> + <para> + To be correctly initialized, <parameter>PAM_SM_AUTH</parameter> + must be <command>#define</command>'d prior to including + <function><security/pam_modules.h></function>. This will + ensure that the prototypes for static modules are properly declared. + </para> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_sm_authenticate.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_sm_setcred.xml"/> + </section> + <section id="mwg-expected-of-module-acct"> + <title>Account management</title> + <para> + To be correctly initialized, <parameter>PAM_SM_ACCOUNT</parameter> + must be <command>#define</command>'d prior to including + <function><security/pam_modules.h></function>. This will + ensure that the prototypes for static modules are properly declared. + </para> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_sm_acct_mgmt.xml"/> + </section> + <section id="mwg-expected-of-module-session"> + <title>Session management</title> + <para> + To be correctly initialized, <parameter>PAM_SM_SESSION</parameter> + must be <command>#define</command>'d prior to including + <function><security/pam_modules.h></function>. This will + ensure that the prototypes for static modules are properly declared. + </para> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_sm_open_session.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_sm_close_session.xml"/> + </section> + <section id="mwg-expected-of-module-chauthtok"> + <title>Authentication token management</title> + <para> + To be correctly initialized, <parameter>PAM_SM_PASSWORD</parameter> + must be <command>#define</command>'d prior to including + <function><security/pam_modules.h></function>. This will + ensure that the prototypes for static modules are properly declared. + </para> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_sm_chauthtok.xml"/> + </section> + </chapter> + + <chapter id="mwg-see-options"> + <title>Generic optional arguments</title> + <para> + Here we list the generic arguments that all modules can expect to + be passed. They are not mandatory, and their absence should be + accepted without comment by the module. + </para> + <variablelist> + <varlistentry> + <term>debug</term> + <listitem> + <para> + Use the <citerefentry> + <refentrytitle>pam_syslog</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> call to log debugging information to the system + log files. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>use_first_pass</term> + <listitem> + <para> + The module should not prompt the user for a password. + Instead, it should obtain the previously typed password + (by a call to <function>pam_get_item()</function> for the + <parameter>PAM_AUTHTOK</parameter> item), and use that. If + that doesn't work, then the user will not be authenticated. + (This option is intended for <command>auth</command> and + <command>passwd</command> modules only). + </para> + </listitem> + </varlistentry> + </variablelist> + </chapter> + + <chapter id="mwg-see-programming"> + <title>Programming notes</title> + <para> + Here we collect some pointers for the module writer to bear in mind + when writing/developing a <emphasis remap='B'>Linux-PAM</emphasis> + compatible module. + </para> + + <section id="mwg-see-programming-sec"> + <title>Security issues for module creation</title> + <section id="mwg-see-programming-sec-res"> + <title>Sufficient resources</title> + <para> + Care should be taken to ensure that the proper execution + of a module is not compromised by a lack of system resources. + If a module is unable to open sufficient files to perform its + task, it should fail gracefully, or request additional resources. + Specifically, the quantities manipulated by the <citerefentry> + <refentrytitle>setrlimit</refentrytitle><manvolnum>2</manvolnum> + </citerefentry> family of commands should be taken into + consideration. + </para> + </section> + <section id="mwg-see-programming-sec-who"> + <title>Who´s who?</title> + <para> + Generally, the module may wish to establish the identity of + the user requesting a service. This may not be the same as + the username returned by <function>pam_get_user()</function>. + Indeed, that is only going to be the name of the user under + whose identity the service will be given. This is not + necessarily the user that requests the service. + </para> + <para> + In other words, user X runs a program that is setuid-Y, it + grants the user to have the permissions of Z. A specific example + of this sort of service request is the <command>su</command> + program: user <command>joe</command> executes + <command>su</command> to become the user <command>jane</command>. + In this situation X=<command>joe</command>, Y=<command>root</command> + and Z=<command>jane</command>. Clearly, it is important that + the module does not confuse these different users and grant an + inappropriate level of privilege. + </para> + <para> + The following is the convention to be adhered to when juggling + user-identities. + </para> + <itemizedlist> + <listitem> + <para> + X, the identity of the user invoking the service request. + This is the user identifier; returned by the function + <citerefentry> + <refentrytitle>getuid</refentrytitle><manvolnum>2</manvolnum> + </citerefentry>. + </para> + </listitem> + <listitem> + <para> + Y, the privileged identity of the application used to + grant the requested service. This is the + <emphasis>effective</emphasis> user identifier; + returned by the function <citerefentry> + <refentrytitle>geteuid</refentrytitle><manvolnum>2</manvolnum> + </citerefentry>. + </para> + </listitem> + <listitem> + <para> + Z, the user under whose identity the service will be granted. + This is the username returned by + <function>pam_get_user()</function> and also stored in the + <emphasis remap='B'>Linux-PAM</emphasis> item, + <emphasis>PAM_USER</emphasis>. + </para> + </listitem> + <listitem> + <para> + <emphasis remap='B'>Linux-PAM</emphasis> has a place for + an additional user identity that a module may care to make + use of. This is the <emphasis>PAM_RUSER</emphasis> item. + Generally, network sensitive modules/applications may wish + to set/read this item to establish the identity of the user + requesting a service from a remote location. + </para> + </listitem> + </itemizedlist> + <para> + Note, if a module wishes to modify the identity of either the + <emphasis>uid</emphasis> or <emphasis>euid</emphasis> of the + running process, it should take care to restore the original + values prior to returning control to the + <emphasis remap='B'>Linux-PAM</emphasis> library. + </para> + </section> + <section id="mwg-see-programming-sec-conv"> + <title>Using the conversation function</title> + <para> + Prior to calling the conversation function, the module should + reset the contents of the pointer that will return the applications + response. This is a good idea since the application may fail + to fill the pointer and the module should be in a position to + notice! + </para> + <para> + The module should be prepared for a failure from the + conversation. The generic error would be + <emphasis>PAM_CONV_ERR</emphasis>, but anything other than + <emphasis>PAM_SUCCESS</emphasis> should be treated as + indicating failure. + </para> + </section> + <section id="mwg-see-programming-sec-token"> + <title>Authentication tokens</title> + <para> + To ensure that the authentication tokens are not left lying + around the items, <emphasis>PAM_AUTHTOK</emphasis> and + <emphasis>PAM_OLDAUTHTOK</emphasis>, are not available to + the application: they are defined in + <filename><security/pam_modules.h></filename>. This + is ostensibly for security reasons, but a maliciously + programmed application will always have access to all memory + of the process, so it is only superficially enforced. As a + general rule the module should overwrite authentication tokens + as soon as they are no longer needed. Especially before + <function>free()</function>'ing them. The + <emphasis remap='B'>Linux-PAM</emphasis> library is + required to do this when either of these authentication + token items are (re)set. + </para> + <para> + Not to dwell too little on this concern; should the module + store the authentication tokens either as (automatic) function + variables or using <function>pam_[gs]et_data()</function> the + associated memory should be over-written explicitly before it + is released. In the case of the latter storage mechanism, the + associated <function>cleanup()</function> function should + explicitly overwrite the <varname>*data</varname> before + <function>free()</function>'ing it: for example, + <programlisting> +/* + * An example cleanup() function for releasing memory that was used to + * store a password. + */ + +int cleanup(pam_handle_t *pamh, void *data, int error_status) +{ + char *xx; + + if ((xx = data)) { + while (*xx) + *xx++ = '\0'; + free(data); + } + return PAM_SUCCESS; +} + </programlisting> + </para> + </section> + </section> + <section id="mwg-see-programming-syslog"> + <title>Use of <citerefentry> + <refentrytitle>syslog</refentrytitle><manvolnum>3</manvolnum> + </citerefentry></title> + <para> + Only rarely should error information be directed to the user. + Usually, this is to be limited to + <quote><emphasis>sorry you cannot login now</emphasis></quote> + type messages. Information concerning errors in the configuration + file, <filename>/etc/pam.conf</filename>, or due to some system + failure encountered by the module, should be written to + <citerefentry> + <refentrytitle>syslog</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> with <emphasis>facility-type</emphasis> + <emphasis remap='B'>LOG_AUTHPRIV</emphasis>. + </para> + <para> + With a few exceptions, the level of logging is, at the discretion + of the module developer. Here is the recommended usage of different + logging levels: + </para> + <itemizedlist> + <listitem> + <para> + As a general rule, errors encountered by a module should be + logged at the <emphasis>LOG_ERR</emphasis> level. However, + information regarding an unrecognized argument, passed to a + module from an entry in the <filename>/etc/pam.conf</filename> + file, is <emphasis>required</emphasis> to be logged at the + <emphasis>LOG_ERR</emphasis> level. + </para> + </listitem> + <listitem> + <para> + Debugging information, as activated by the + <command>debug</command> argument to the module in + <filename>/etc/pam.conf</filename>, should be logged + at the <emphasis>LOG_DEBUG</emphasis> level. + </para> + </listitem> + <listitem> + <para> + If a module discovers that its personal configuration + file or some system file it uses for information is + corrupted or somehow unusable, it should indicate this + by logging messages at level, <emphasis>LOG_ALERT</emphasis>. + </para> + </listitem> + <listitem> + <para> + Shortages of system resources, such as a failure to + manipulate a file or <function>malloc()</function> failures + should be logged at level <emphasis>LOG_CRIT</emphasis>. + </para> + </listitem> + <listitem> + <para> + Authentication failures, associated with an incorrectly + typed password should be logged at level, + <emphasis>LOG_NOTICE</emphasis>. + </para> + </listitem> + </itemizedlist> + </section> + <section id="mwg-see-programming-libs"> + <title>Modules that require system libraries</title> + <para> + Writing a module is much like writing an application. You + have to provide the "conventional hooks" for it to work + correctly, like <function>pam_sm_authenticate()</function> + etc., which would correspond to the <function>main()</function> + function in a normal function. + </para> + <para> + Typically, the author may want to link against some standard system + libraries. As when one compiles a normal program, this can be + done for modules too: you simply append the + <parameter>-l</parameter><emphasis>XXX</emphasis> arguments + for the desired libraries when you create the shared module object. + To make sure a module is linked to the + <command>libwhatever.so</command> library + when it is <function>dlopen()</function>ed, try: + <programlisting> +% gcc -shared -o pam_module.so pam_module.o -lwhatever + </programlisting> + </para> + </section> + </chapter> + + <chapter id="mwg-example"> + <title>An example module</title> + <para> + At some point, we may include a fully commented example of a module in + this document. For now, please look at the modules directory of the + <emphasis remap='B'>Linux-PAM</emphasis> sources. + </para> + </chapter> + + <chapter id="mwg-see-also"> + <title>See also</title> + <itemizedlist> + <listitem> + <para> + The Linux-PAM System Administrators' Guide. + </para> + </listitem> + <listitem> + <para> + The Linux-PAM Application Developers' Guide. + </para> + </listitem> + <listitem> + <para> + The V. Samar and R. Schemers (SunSoft), ``UNIFIED LOGIN WITH + PLUGGABLE AUTHENTICATION MODULES'', Open Software Foundation + Request For Comments 86.0, October 1995. + </para> + </listitem> + </itemizedlist> + </chapter> + + <chapter id='mwg-author'> + <title>Author/acknowledgments</title> + <para> + This document was written by Andrew G. Morgan (morgan@kernel.org) + with many contributions from + Chris Adams, Peter Allgeyer, Tim Baverstock, Tim Berger, Craig S. Bell, + Derrick J. Brashear, Ben Buxton, Seth Chaiklin, Oliver Crow, Chris Dent, + Marc Ewing, Cristian Gafton, Emmanuel Galanos, Brad M. Garcia, + Eric Hester, Roger Hu, Eric Jacksch, Michael K. Johnson, David Kinchlea, + Olaf Kirch, Marcin Korzonek, Thorsten Kukuk, Stephen Langasek, + Nicolai Langfeldt, Elliot Lee, Luke Kenneth Casson Leighton, + Al Longyear, Ingo Luetkebohle, Marek Michalkiewicz, Robert Milkowski, + Aleph One, Martin Pool, Sean Reifschneider, Jan Rekorajski, Erik Troan, + Theodore Ts'o, Jeff Uphoff, Myles Uyema, Savochkin Andrey Vladimirovich, + Ronald Wahl, David Wood, John Wilmes, Joseph S. D. Yao + and Alex O. Yuriev. + </para> + <para> + Thanks are also due to Sun Microsystems, especially to Vipin Samar and + Charlie Lai for their advice. At an early stage in the development of + <emphasis remap='B'>Linux-PAM</emphasis>, Sun graciously made the + documentation for their implementation of PAM available. This act + greatly accelerated the development of + <emphasis remap='B'>Linux-PAM</emphasis>. + </para> + </chapter> + + <chapter id='mwg-copyright'> + <title>Copyright information for this document</title> + <programlisting> +Copyright (c) 2006 Thorsten Kukuk <kukuk@thkukuk.de> +Copyright (c) 1996-2002 Andrew G. Morgan <morgan@kernel.org> + </programlisting> + <para> + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are + met: + </para> + <programlisting> +1. Redistributions of source code must retain the above copyright + notice, and the entire permission notice in its entirety, + including the disclaimer of warranties. + +2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + +3. The name of the author may not be used to endorse or promote + products derived from this software without specific prior + written permission. + </programlisting> + <para> + Alternatively, this product may be distributed under the terms of + the GNU General Public License (GPL), in which case the provisions + of the GNU GPL are required instead of the above restrictions. + (This clause is necessary due to a potential bad interaction between + the GNU GPL and the restrictions contained in a BSD-style copyright.) + </para> + <programlisting> +THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED +WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF +MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, +BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS +OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND +ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR +TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE +USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH + </programlisting> + </chapter> +</book> diff --git a/doc/mwg/Makefile.am b/doc/mwg/Makefile.am new file mode 100644 index 00000000..77296189 --- /dev/null +++ b/doc/mwg/Makefile.am @@ -0,0 +1,97 @@ +# +# Copyright (c) 2006 Thorsten Kukuk <kukuk@thkukuk.de> +# + +CLEANFILES = Linux-PAM_MWG.fo *~ + +EXTRA_DIST = $(XMLS) + +XMLS = Linux-PAM_MWG.xml $(shell ls $(srcdir)/pam_*.xml) +DEP_XMLS = $(shell ls $(top_srcdir)/doc/man/pam_*.xml) + +if ENABLE_REGENERATE_MAN +MAINTAINERCLEANFILES = Linux-PAM_MWG.txt Linux-PAM_MWG.pdf html/*.html + +all: Linux-PAM_MWG.txt html/Linux-PAM_MWG.html Linux-PAM_MWG.pdf + +Linux-PAM_MWG.pdf: $(XMLS) $(DEP_XMLS) +if ENABLE_GENERATE_PDF + $(XMLLINT) --nonet --xinclude --postvalid --noent --noout $< + $(XSLTPROC) --stringparam generate.toc "book toc" \ + --stringparam section.autolabel 1 \ + --stringparam section.label.includes.component.label 1 \ + --stringparam toc.max.depth 3 --xinclude --nonet \ + http://docbook.sourceforge.net/release/xsl/current/fo/docbook.xsl $< > Linux-PAM_MWG.fo + $(FO2PDF) Linux-PAM_MWG.fo $@ +else + echo "No fo2pdf processor installed, skip PDF generation" +endif + +Linux-PAM_MWG.txt: $(XMLS) $(DEP_XMLS) + $(XMLLINT) --nonet --xinclude --postvalid --noent --noout $< + $(XSLTPROC) --stringparam generate.toc "book toc" \ + --stringparam section.autolabel 1 \ + --stringparam section.label.includes.component.label 1 \ + --stringparam toc.max.depth 3 --xinclude --nonet \ + http://docbook.sourceforge.net/release/xsl/current/html/docbook.xsl $< | $(BROWSER) > $@ + +html/Linux-PAM_MWG.html: $(XMLS) $(DEP_XMLS) + @test -d html || mkdir -p html + $(XMLLINT) --nonet --xinclude --postvalid --noent --noout $< + $(XSLTPROC) --stringparam base.dir html/ \ + --stringparam root.filename Linux-PAM_MWG \ + --stringparam use.id.as.filename 1 \ + --stringparam chunk.first.sections 1 \ + --stringparam section.autolabel 1 \ + --stringparam section.label.includes.component.label 1 \ + --stringparam toc.max.depth 3 --xinclude --nonet \ + http://docbook.sourceforge.net/release/xsl/current/html/chunk.xsl $< + +distclean-local: + -rm -rf html Linux-PAM_MWG.txt Linux-PAM_MWG.pdf + +endif + +install-data-local: + $(mkinstalldirs) $(DESTDIR)$(docdir) + $(mkinstalldirs) $(DESTDIR)$(pdfdir) + $(mkinstalldirs) $(DESTDIR)$(htmldir) + test -f html/Linux-PAM_MWG.html || exit 0; \ + $(install_sh_DATA) html/Linux-PAM_MWG.html html/mwg-*.html \ + $(DESTDIR)$(htmldir)/ || \ + $(install_sh_DATA) $(srcdir)/html/Linux-PAM_MWG.html \ + $(srcdir)/html/sag-*.html \ + $(DESTDIR)$(htmldir)/ + test -f Linux-PAM_MWG.txt || exit 0; \ + $(install_sh_DATA) Linux-PAM_MWG.txt $(DESTDIR)$(docdir)/ || \ + $(install_sh_DATA) $(srcdir)/Linux-PAM_MWG.txt \ + $(DESTDIR)$(docdir)/ + test -f Linux-PAM_MWG.pdf || exit 0; \ + $(install_sh_DATA) Linux-PAM_MWG.pdf $(DESTDIR)$(pdfdir)/ || \ + $(install_sh_DATA) $(srcdir)/Linux-PAM_MWG.pdf \ + $(DESTDIR)$(pdfdir)/ + +uninstall-local: + -rm $(DESTDIR)$(htmldir)/Linux-PAM_MWG.html + -rm $(DESTDIR)$(htmldir)/mwg-*.html + -rm $(DESTDIR)$(docdir)/Linux-PAM_MWG.txt + -rm $(DESTDIR)$(pdfdir)/Linux-PAM_MWG.pdf + +releasedocs: all + $(mkinstalldirs) $(top_builddir)/Linux-PAM-$(VERSION)/doc/mwg/html + test -f html/Linux-PAM_MWG.html || exit 0; \ + cp -ap html/Linux-PAM_MWG.html html/mwg-*.html \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/mwg/html/ || \ + cp -ap $(srcdir)/html/Linux-PAM_MWG.html \ + $(srcdir)/html/mwg-*.html \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/mwg/html/ + test -f Linux-PAM_MWG.txt || exit 0; \ + cp -p Linux-PAM_MWG.txt \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/mwg/ || \ + cp -p $(srcdir)/Linux-PAM_MWG.txt \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/mwg/ + test -f Linux-PAM_MWG.pdf || exit 0; \ + cp -p Linux-PAM_MWG.pdf \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/mwg/ || \ + cp -p $(srcdir)/Linux-PAM_MWG.pdf \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/mwg/ diff --git a/doc/mwg/Makefile.in b/doc/mwg/Makefile.in new file mode 100644 index 00000000..748c06fa --- /dev/null +++ b/doc/mwg/Makefile.in @@ -0,0 +1,473 @@ +# Makefile.in generated by automake 1.10.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +# +# Copyright (c) 2006 Thorsten Kukuk <kukuk@thkukuk.de> +# +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = @build@ +host_triplet = @host@ +subdir = doc/mwg +DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in +ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 +am__aclocal_m4_deps = $(top_srcdir)/m4/gettext.m4 \ + $(top_srcdir)/m4/iconv.m4 \ + $(top_srcdir)/m4/jh_path_xml_catalog.m4 \ + $(top_srcdir)/m4/ld-O1.m4 $(top_srcdir)/m4/ld-as-needed.m4 \ + $(top_srcdir)/m4/lib-ld.m4 $(top_srcdir)/m4/lib-link.m4 \ + $(top_srcdir)/m4/lib-prefix.m4 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+@ENABLE_REGENERATE_MAN_TRUE@ --stringparam toc.max.depth 3 --xinclude --nonet \ +@ENABLE_REGENERATE_MAN_TRUE@ http://docbook.sourceforge.net/release/xsl/current/html/docbook.xsl $< | $(BROWSER) > $@ + +@ENABLE_REGENERATE_MAN_TRUE@html/Linux-PAM_MWG.html: $(XMLS) $(DEP_XMLS) +@ENABLE_REGENERATE_MAN_TRUE@ @test -d html || mkdir -p html +@ENABLE_REGENERATE_MAN_TRUE@ $(XMLLINT) --nonet --xinclude --postvalid --noent --noout $< +@ENABLE_REGENERATE_MAN_TRUE@ $(XSLTPROC) --stringparam base.dir html/ \ +@ENABLE_REGENERATE_MAN_TRUE@ --stringparam root.filename Linux-PAM_MWG \ +@ENABLE_REGENERATE_MAN_TRUE@ --stringparam use.id.as.filename 1 \ +@ENABLE_REGENERATE_MAN_TRUE@ --stringparam chunk.first.sections 1 \ +@ENABLE_REGENERATE_MAN_TRUE@ --stringparam section.autolabel 1 \ +@ENABLE_REGENERATE_MAN_TRUE@ --stringparam section.label.includes.component.label 1 \ +@ENABLE_REGENERATE_MAN_TRUE@ --stringparam toc.max.depth 3 --xinclude --nonet \ +@ENABLE_REGENERATE_MAN_TRUE@ http://docbook.sourceforge.net/release/xsl/current/html/chunk.xsl $< + +@ENABLE_REGENERATE_MAN_TRUE@distclean-local: +@ENABLE_REGENERATE_MAN_TRUE@ -rm -rf html Linux-PAM_MWG.txt Linux-PAM_MWG.pdf + +install-data-local: + $(mkinstalldirs) $(DESTDIR)$(docdir) + $(mkinstalldirs) $(DESTDIR)$(pdfdir) + $(mkinstalldirs) $(DESTDIR)$(htmldir) + test -f html/Linux-PAM_MWG.html || exit 0; \ + $(install_sh_DATA) html/Linux-PAM_MWG.html html/mwg-*.html \ + $(DESTDIR)$(htmldir)/ || \ + $(install_sh_DATA) $(srcdir)/html/Linux-PAM_MWG.html \ + $(srcdir)/html/sag-*.html \ + $(DESTDIR)$(htmldir)/ + test -f Linux-PAM_MWG.txt || exit 0; \ + $(install_sh_DATA) Linux-PAM_MWG.txt $(DESTDIR)$(docdir)/ || \ + $(install_sh_DATA) $(srcdir)/Linux-PAM_MWG.txt \ + $(DESTDIR)$(docdir)/ + test -f Linux-PAM_MWG.pdf || exit 0; \ + $(install_sh_DATA) Linux-PAM_MWG.pdf $(DESTDIR)$(pdfdir)/ || \ + $(install_sh_DATA) $(srcdir)/Linux-PAM_MWG.pdf \ + $(DESTDIR)$(pdfdir)/ + +uninstall-local: + -rm $(DESTDIR)$(htmldir)/Linux-PAM_MWG.html + -rm $(DESTDIR)$(htmldir)/mwg-*.html + -rm $(DESTDIR)$(docdir)/Linux-PAM_MWG.txt + -rm $(DESTDIR)$(pdfdir)/Linux-PAM_MWG.pdf + +releasedocs: all + $(mkinstalldirs) $(top_builddir)/Linux-PAM-$(VERSION)/doc/mwg/html + test -f html/Linux-PAM_MWG.html || exit 0; \ + cp -ap html/Linux-PAM_MWG.html html/mwg-*.html \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/mwg/html/ || \ + cp -ap $(srcdir)/html/Linux-PAM_MWG.html \ + $(srcdir)/html/mwg-*.html \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/mwg/html/ + test -f Linux-PAM_MWG.txt || exit 0; \ + cp -p Linux-PAM_MWG.txt \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/mwg/ || \ + cp -p $(srcdir)/Linux-PAM_MWG.txt \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/mwg/ + test -f Linux-PAM_MWG.pdf || exit 0; \ + cp -p Linux-PAM_MWG.pdf \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/mwg/ || \ + cp -p $(srcdir)/Linux-PAM_MWG.pdf \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/mwg/ +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/doc/mwg/pam_conv.xml b/doc/mwg/pam_conv.xml new file mode 100644 index 00000000..a2b470af --- /dev/null +++ b/doc/mwg/pam_conv.xml @@ -0,0 +1,35 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='mwg-pam_conv'> + <title>The conversation function</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_conv.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_conv-synopsis"]/*)'/> + </funcsynopsis> + <programlisting> +struct pam_message { + int msg_style; + const char *msg; +}; + +struct pam_response { + char *resp; + int resp_retcode; +}; + +struct pam_conv { + int (*conv)(int num_msg, const struct pam_message **msg, + struct pam_response **resp, void *appdata_ptr); + void *appdata_ptr; +}; + </programlisting> + <section id='mwg-pam_conv-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_conv.3.xml" xpointer='xpointer(//refsect1[@id = "pam_conv-description"]/*)'/> + </section> + <section id='mwg-pam_conv-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_conv.3.xml" xpointer='xpointer(//refsect1[@id = "pam_conv-return_values"]/*)'/> + </section> +</section> diff --git a/doc/mwg/pam_fail_delay.xml b/doc/mwg/pam_fail_delay.xml new file mode 100644 index 00000000..589e1148 --- /dev/null +++ b/doc/mwg/pam_fail_delay.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='adg-pam_fail_delay'> + <title>Request a delay on failure</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_fail_delay.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_fail_delay-synopsis"]/*)'/> + </funcsynopsis> + <section id='adg-pam_fail_delay-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_fail_delay.3.xml" xpointer='xpointer(//refsect1[@id = "pam_fail_delay-description"]/*)'/> + </section> + <section id='adg-pam_fail_delay-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_fail_delay.3.xml" xpointer='xpointer(//refsect1[@id = "pam_fail_delay-return_values"]/*)'/> + </section> +</section> diff --git a/doc/mwg/pam_get_data.xml b/doc/mwg/pam_get_data.xml new file mode 100644 index 00000000..b1afdb3f --- /dev/null +++ b/doc/mwg/pam_get_data.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='mwg-pam_get_data'> + <title>Get module internal data</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_get_data.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_get_data-synopsis"]/*)'/> + </funcsynopsis> + <section id='mwg-pam_get_data-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_get_data.3.xml" xpointer='xpointer(//refsect1[@id = "pam_get_data-description"]/*)'/> + </section> + <section id='mwg-pam_get_data-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_get_data.3.xml" xpointer='xpointer(//refsect1[@id = "pam_get_data-return_values"]/*)'/> + </section> +</section> diff --git a/doc/mwg/pam_get_item.xml b/doc/mwg/pam_get_item.xml new file mode 100644 index 00000000..370a10a1 --- /dev/null +++ b/doc/mwg/pam_get_item.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='mwg-pam_get_item'> + <title>Getting PAM items</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_get_item.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_get_item-synopsis"]/*)'/> + </funcsynopsis> + <section id='mwg-pam_get_item-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_get_item.3.xml" xpointer='xpointer(//refsect1[@id = "pam_get_item-description"]/*)'/> + </section> + <section id='mwg-pam_get_item-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_get_item.3.xml" xpointer='xpointer(//refsect1[@id = "pam_get_item-return_values"]/*)'/> + </section> +</section> diff --git a/doc/mwg/pam_get_user.xml b/doc/mwg/pam_get_user.xml new file mode 100644 index 00000000..1cb7fdf3 --- /dev/null +++ b/doc/mwg/pam_get_user.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='mwg-pam_get_user'> + <title>Get user name</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_get_user.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_get_user-synopsis"]/*)'/> + </funcsynopsis> + <section id='mwg-pam_get_user-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_get_user.3.xml" xpointer='xpointer(//refsect1[@id = "pam_get_user-description"]/*)'/> + </section> + <section id='mwg-pam_get_user-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_get_user.3.xml" xpointer='xpointer(//refsect1[@id = "pam_get_user-return_values"]/*)'/> + </section> +</section> diff --git a/doc/mwg/pam_getenv.xml b/doc/mwg/pam_getenv.xml new file mode 100644 index 00000000..61d69c33 --- /dev/null +++ b/doc/mwg/pam_getenv.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='adg-pam_getenv'> + <title>Get a PAM environment variable</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_getenv.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_getenv-synopsis"]/*)'/> + </funcsynopsis> + <section id='adg-pam_getenv-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_getenv.3.xml" xpointer='xpointer(//refsect1[@id = "pam_getenv-description"]/*)'/> + </section> + <section id='adg-pam_getenv-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_getenv.3.xml" xpointer='xpointer(//refsect1[@id = "pam_getenv-return_values"]/*)'/> + </section> +</section> diff --git a/doc/mwg/pam_getenvlist.xml b/doc/mwg/pam_getenvlist.xml new file mode 100644 index 00000000..d3c2fcd3 --- /dev/null +++ b/doc/mwg/pam_getenvlist.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='adg-pam_getenvlist'> + <title>Getting the PAM environment</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_getenvlist.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_getenvlist-synopsis"]/*)'/> + </funcsynopsis> + <section id='adg-pam_getenvlist-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_getenvlist.3.xml" xpointer='xpointer(//refsect1[@id = "pam_getenvlist-description"]/*)'/> + </section> + <section id='adg-pam_getenvlist-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_getenvlist.3.xml" xpointer='xpointer(//refsect1[@id = "pam_getenvlist-return_values"]/*)'/> + </section> +</section> diff --git a/doc/mwg/pam_putenv.xml b/doc/mwg/pam_putenv.xml new file mode 100644 index 00000000..e55f1a42 --- /dev/null +++ b/doc/mwg/pam_putenv.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='adg-pam_putenv'> + <title>Set or change PAM environment variable</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_putenv.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_putenv-synopsis"]/*)'/> + </funcsynopsis> + <section id='adg-pam_putenv-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_putenv.3.xml" xpointer='xpointer(//refsect1[@id = "pam_putenv-description"]/*)'/> + </section> + <section id='adg-pam_putenv-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_putenv.3.xml" xpointer='xpointer(//refsect1[@id = "pam_putenv-return_values"]/*)'/> + </section> +</section> diff --git a/doc/mwg/pam_set_data.xml b/doc/mwg/pam_set_data.xml new file mode 100644 index 00000000..18b2711b --- /dev/null +++ b/doc/mwg/pam_set_data.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='mwg-pam_set_data'> + <title>Set module internal data</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_set_data.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_set_data-synopsis"]/*)'/> + </funcsynopsis> + <section id='mwg-pam_set_data-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_set_data.3.xml" xpointer='xpointer(//refsect1[@id = "pam_set_data-description"]/*)'/> + </section> + <section id='mwg-pam_set_data-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_set_data.3.xml" xpointer='xpointer(//refsect1[@id = "pam_set_data-return_values"]/*)'/> + </section> +</section> diff --git a/doc/mwg/pam_set_item.xml b/doc/mwg/pam_set_item.xml new file mode 100644 index 00000000..7d19925e --- /dev/null +++ b/doc/mwg/pam_set_item.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='mwg-pam_set_item'> + <title>Setting PAM items</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_set_item.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_set_item-synopsis"]/*)'/> + </funcsynopsis> + <section id='mwg-pam_set_item-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_set_item.3.xml" xpointer='xpointer(//refsect1[@id = "pam_set_item-description"]/*)'/> + </section> + <section id='mwg-pam_set_item-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_set_item.3.xml" xpointer='xpointer(//refsect1[@id = "pam_set_item-return_values"]/*)'/> + </section> +</section> diff --git a/doc/mwg/pam_sm_acct_mgmt.xml b/doc/mwg/pam_sm_acct_mgmt.xml new file mode 100644 index 00000000..10b3c9e9 --- /dev/null +++ b/doc/mwg/pam_sm_acct_mgmt.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='mwg-pam_sm_acct_mgmt'> + <title>Service function for account management</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_sm_acct_mgmt.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_sm_acct_mgmt-synopsis"]/*)'/> + </funcsynopsis> + <section id='mwg-pam_sm_acct_mgmt-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_sm_acct_mgmt.3.xml" xpointer='xpointer(//refsect1[@id = "pam_sm_acct_mgmt-description"]/*)'/> + </section> + <section id='mwg-pam_sm_acct_mgmt-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_sm_acct_mgmt.3.xml" xpointer='xpointer(//refsect1[@id = "pam_sm_acct_mgmt-return_values"]/*)'/> + </section> +</section> diff --git a/doc/mwg/pam_sm_authenticate.xml b/doc/mwg/pam_sm_authenticate.xml new file mode 100644 index 00000000..54c79af6 --- /dev/null +++ b/doc/mwg/pam_sm_authenticate.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='mwg-pam_sm_authenticate'> + <title>Service function for user authentication</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_sm_authenticate.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_sm_authenticate-synopsis"]/*)'/> + </funcsynopsis> + <section id='mwg-pam_sm_authenticate-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_sm_authenticate.3.xml" xpointer='xpointer(//refsect1[@id = "pam_sm_authenticate-description"]/*)'/> + </section> + <section id='mwg-pam_sm_authenticate-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_sm_authenticate.3.xml" xpointer='xpointer(//refsect1[@id = "pam_sm_authenticate-return_values"]/*)'/> + </section> +</section> diff --git a/doc/mwg/pam_sm_chauthtok.xml b/doc/mwg/pam_sm_chauthtok.xml new file mode 100644 index 00000000..a1364315 --- /dev/null +++ b/doc/mwg/pam_sm_chauthtok.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='mwg-pam_sm_chauthtok'> + <title>Service function to alter authentication token</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_sm_chauthtok.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_sm_chauthtok-synopsis"]/*)'/> + </funcsynopsis> + <section id='mwg-pam_sm_chauthtok-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_sm_chauthtok.3.xml" xpointer='xpointer(//refsect1[@id = "pam_sm_chauthtok-description"]/*)'/> + </section> + <section id='mwg-pam_sm_chauthtok-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_sm_chauthtok.3.xml" xpointer='xpointer(//refsect1[@id = "pam_sm_chauthtok-return_values"]/*)'/> + </section> +</section> diff --git a/doc/mwg/pam_sm_close_session.xml b/doc/mwg/pam_sm_close_session.xml new file mode 100644 index 00000000..9346c506 --- /dev/null +++ b/doc/mwg/pam_sm_close_session.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-close.org/docbook/xml/4.4/docbookx.dtd"> +<section id='mwg-pam_sm_close_session'> + <title>Service function to terminate session management</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_sm_close_session.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_sm_close_session-synopsis"]/*)'/> + </funcsynopsis> + <section id='mwg-pam_sm_close_session-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_sm_close_session.3.xml" xpointer='xpointer(//refsect1[@id = "pam_sm_close_session-description"]/*)'/> + </section> + <section id='mwg-pam_sm_close_session-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_sm_close_session.3.xml" xpointer='xpointer(//refsect1[@id = "pam_sm_close_session-return_values"]/*)'/> + </section> +</section> diff --git a/doc/mwg/pam_sm_open_session.xml b/doc/mwg/pam_sm_open_session.xml new file mode 100644 index 00000000..b8e3fa90 --- /dev/null +++ b/doc/mwg/pam_sm_open_session.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='mwg-pam_sm_open_session'> + <title>Service function to start session management</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_sm_open_session.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_sm_open_session-synopsis"]/*)'/> + </funcsynopsis> + <section id='mwg-pam_sm_open_session-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_sm_open_session.3.xml" xpointer='xpointer(//refsect1[@id = "pam_sm_open_session-description"]/*)'/> + </section> + <section id='mwg-pam_sm_open_session-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_sm_open_session.3.xml" xpointer='xpointer(//refsect1[@id = "pam_sm_open_session-return_values"]/*)'/> + </section> +</section> diff --git a/doc/mwg/pam_sm_setcred.xml b/doc/mwg/pam_sm_setcred.xml new file mode 100644 index 00000000..eee8e1d6 --- /dev/null +++ b/doc/mwg/pam_sm_setcred.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='mwg-pam_sm_setcred'> + <title>Service function to alter credentials</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_sm_setcred.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_sm_setcred-synopsis"]/*)'/> + </funcsynopsis> + <section id='mwg-pam_sm_setcred-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_sm_setcred.3.xml" xpointer='xpointer(//refsect1[@id = "pam_sm_setcred-description"]/*)'/> + </section> + <section id='mwg-pam_sm_setcred-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_sm_setcred.3.xml" xpointer='xpointer(//refsect1[@id = "pam_sm_setcred-return_values"]/*)'/> + </section> +</section> diff --git a/doc/mwg/pam_strerror.xml b/doc/mwg/pam_strerror.xml new file mode 100644 index 00000000..35b08a27 --- /dev/null +++ b/doc/mwg/pam_strerror.xml @@ -0,0 +1,18 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='adg-pam_strerror'> + <title>Strings describing PAM error codes</title> + <funcsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_strerror.3.xml" xpointer='xpointer(//funcsynopsis[@id = "pam_strerror-synopsis"]/*)'/> + </funcsynopsis> + <section id='adg-pam_strerror-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_strerror.3.xml" xpointer='xpointer(//refsect1[@id = "pam_strerror-description"]/*)'/> + </section> + <section id='adg-pam_strerror-return_values'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam_strerror.3.xml" xpointer='xpointer(//refsect1[@id = "pam_strerror-return_values"]/*)'/> + </section> +</section> diff --git a/doc/sag/Linux-PAM_SAG.xml b/doc/sag/Linux-PAM_SAG.xml new file mode 100644 index 00000000..eef2b71f --- /dev/null +++ b/doc/sag/Linux-PAM_SAG.xml @@ -0,0 +1,570 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<book id="sag"> + <bookinfo> + <title>The Linux-PAM System Administrators' Guide</title> + <authorgroup> + <author> + <firstname>Andrew G.</firstname> + <surname>Morgan</surname> + <email>morgan@kernel.org</email> + </author> + <author> + <firstname>Thorsten</firstname> + <surname>Kukuk</surname> + <email>kukuk@thkukuk.de</email> + </author> + </authorgroup> + <releaseinfo>Version 1.0, 3. April 2008</releaseinfo> + <abstract> + <para> + This manual documents what a system-administrator needs to know about + the <emphasis remap='B'>Linux-PAM</emphasis> library. It covers the + correct syntax of the PAM configuration file and discusses strategies + for maintaining a secure system. + </para> + </abstract> + </bookinfo> + + <chapter id='sag-introductoin'> + <title>Introduction</title> + <para> + <emphasis remap='B'>Linux-PAM</emphasis> (Pluggable Authentication + Modules for Linux) is a suite of shared libraries that enable the + local system administrator to choose how applications authenticate users. + </para> + <para> + In other words, without (rewriting and) recompiling a PAM-aware + application, it is possible to switch between the authentication + mechanism(s) it uses. Indeed, one may entirely upgrade the local + authentication system without touching the applications themselves. + </para> + <para> + Historically an application that has required a given user to be + authenticated, has had to be compiled to use a specific authentication + mechanism. For example, in the case of traditional UN*X systems, the + identity of the user is verified by the user entering a correct + password. This password, after being prefixed by a two character + ``salt'', is encrypted (with crypt(3)). The user is then authenticated + if this encrypted password is identical to the second field of the + user's entry in the system password database (the + <filename>/etc/passwd</filename> file). On such systems, most if + not all forms of privileges are granted based on this single + authentication scheme. Privilege comes in the form of a personal + user-identifier (UID) and membership of various groups. Services and + applications are available based on the personal and group identity + of the user. Traditionally, group membership has been assigned based + on entries in the <filename>/etc/group</filename> file. + </para> + <para> + It is the purpose of the <emphasis remap='B'>Linux-PAM</emphasis> + project to separate the development of privilege granting software + from the development of secure and appropriate authentication schemes. + This is accomplished by providing a library of functions that an + application may use to request that a user be authenticated. This + PAM library is configured locally with a system file, + <filename>/etc/pam.conf</filename> (or a series of configuration + files located in <filename>/etc/pam.d/</filename>) to authenticate a + user request via the locally available authentication modules. The + modules themselves will usually be located in the directory + <filename>/lib/security</filename> or + <filename>/lib64/security</filename> and take the form of dynamically + loadable object files (see <citerefentry> + <refentrytitle>dlopen</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>). + </para> + </chapter> + + <chapter id="sag-text-conventions"> + <title>Some comments on the text</title> + <para> + Before proceeding to read the rest of this document, it should be + noted that the text assumes that certain files are placed in certain + directories. Where they have been specified, the conventions we adopt + here for locating these files are those of the relevant RFC (RFC-86.0, + see <link linkend="sag-see-also">bibliography"</link>). If you are + using a distribution of Linux (or some other operating system) that + supports PAM but chooses to distribute these files in a diferent way + you should be careful when copying examples directly from the text. + </para> + <para> + As an example of the above, where it is explicit, the text assumes + that PAM loadable object files (the + <emphasis remap='B'>modules</emphasis>) are to be located in + the following directory: <filename>/lib/security/</filename> or + <filename>/lib64/security</filename> depending on the architecture. + This is generally the location that seems to be compatible with the + Filesystem Hierarchy Standard (FHS). On Solaris, which has its own + licensed version of PAM, and some other implementations of UN*X, + these files can be found in <filename>/usr/lib/security</filename>. + Please be careful to perform the necessary transcription when using + the examples from the text. + </para> + </chapter> + + <chapter id="sag-overview"> + <title>Overview</title> + <para> + For the uninitiated, we begin by considering an example. We take an + application that grants some service to users; + <command>login</command> is one such program. + <command>Login</command> does two things, it first establishes that + the requesting user is whom they claim to be and second provides + them with the requested service: in the case of + <command>login</command> the service is a command shell + (bash, tcsh, zsh, etc.) running with the identity of the user. + </para> + <para> + Traditionally, the former step is achieved by the + <command>login</command> application prompting the user for a + password and then verifying that it agrees with that located on + the system; hence verifying that as far as the system is concerned + the user is who they claim to be. This is the task that is delegated + to <emphasis remap='B'>Linux-PAM</emphasis>. + </para> + <para> + From the perspective of the application programmer (in this case + the person that wrote the <command>login</command> application), + <emphasis remap='B'>Linux-PAM</emphasis> takes care of this + authentication task -- verifying the identity of the user. + </para> + <para> + The flexibility of <emphasis remap='B'>Linux-PAM</emphasis> is + that <emphasis>you</emphasis>, the system administrator, have + the freedom to stipulate which authentication scheme is to be + used. You have the freedom to set the scheme for any/all + PAM-aware applications on your Linux system. That is, you can + authenticate from anything as naive as + <emphasis>simple trust</emphasis> (<command>pam_permit</command>) + to something as paranoid as a combination of a retinal scan, a + voice print and a one-time password! + </para> + <para> + To illustrate the flexibility you face, consider the following + situation: a system administrator (parent) wishes to improve the + mathematical ability of her users (children). She can configure + their favorite ``Shoot 'em up game'' (PAM-aware of course) to + authenticate them with a request for the product of a couple of + random numbers less than 12. It is clear that if the game is any + good they will soon learn their + <emphasis>multiplication tables</emphasis>. As they mature, the + authentication can be upgraded to include (long) division! + </para> + <para> + <emphasis remap='B'>Linux-PAM</emphasis> deals with four + separate types of (management) task. These are: + <emphasis>authentication management</emphasis>; + <emphasis>account management</emphasis>; + <emphasis>session management</emphasis>; and + <emphasis>password management</emphasis>. + The association of the preferred management scheme with the behavior + of an application is made with entries in the relevant + <emphasis remap='B'>Linux-PAM</emphasis> configuration file. + The management functions are performed by <emphasis>modules</emphasis> + specified in the configuration file. The syntax for this + file is discussed in the section + <link linkend="sag-configuration">below</link>. + </para> + <para> + Here is a figure that describes the overall organization of + <emphasis remap='B'>Linux-PAM</emphasis>: + <programlisting> + +----------------+ + | application: X | + +----------------+ / +----------+ +================+ + | authentication-[---->--\--] Linux- |--<--| PAM config file| + | + [----<--/--] PAM | |================| + |[conversation()][--+ \ | | | X auth .. a.so | + +----------------+ | / +-n--n-----+ | X auth .. b.so | + | | | __| | | _____/ + | service user | A | | |____,-----' + | | | V A + +----------------+ +------|-----|---------+ -----+------+ + +---u-----u----+ | | | + | auth.... |--[ a ]--[ b ]--[ c ] + +--------------+ + | acct.... |--[ b ]--[ d ] + +--------------+ + | password |--[ b ]--[ c ] + +--------------+ + | session |--[ e ]--[ c ] + +--------------+ + </programlisting> + By way of explanation, the left of the figure represents the + application; application X. Such an application interfaces with the + <emphasis remap='B'>Linux-PAM</emphasis> library and knows none of + the specifics of its configured authentication method. The + <emphasis remap='B'>Linux-PAM</emphasis> library (in the center) + consults the contents of the PAM configuration file and loads the + modules that are appropriate for application-X. These modules fall + into one of four management groups (lower-center) and are stacked in + the order they appear in the configuration file. These modules, when + called by <emphasis remap='B'>Linux-PAM</emphasis>, perform the + various authentication tasks for the application. Textual information, + required from/or offered to the user, can be exchanged through the + use of the application-supplied <emphasis>conversation</emphasis> + function. + </para> + <para> + If a program is going to use PAM, then it has to have PAM + functions explicitly coded into the program. If you have + access to the source code you can add the appropriate PAM + functions. If you do not have accessto the source code, and + the binary does not have the PAM functions included, then + it is not possible to use PAM. + </para> + </chapter> + + <chapter id="sag-configuration"> + <title>The Linux-PAM configuration file</title> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam.conf-desc.xml" + xpointer='xpointer(//section[@id = "pam.conf-desc"]/*)' /> + <section id='sag-configuration-file'> + <title>Configuration file syntax</title> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam.conf-syntax.xml" + xpointer='xpointer(//section[@id = "pam.conf-syntax"]/*)' /> + </section> + <section id='sag-configuratin-dirctory'> + <title>Directory based configuration</title> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../man/pam.conf-dir.xml" + xpointer='xpointer(//section[@id = "pam.conf-dir"]/*)' /> + </section> + <section id='sag-configuration-example'> + <title>Example configuration file entries</title> + <para> + In this section, we give some examples of entries that can + be present in the <emphasis remap='B'>Linux-PAM</emphasis> + configuration file. As a first attempt at configuring your + system you could do worse than to implement these. + </para> + <para> + If a system is to be considered secure, it had better have a + reasonably secure '<emphasis remap='B'>other</emphasis> entry. + The following is a paranoid setting (which is not a bad place + to start!): + </para> + <programlisting> +# +# default; deny access +# +other auth required pam_deny.so +other account required pam_deny.so +other password required pam_deny.so +other session required pam_deny.so + </programlisting> + <para> + Whilst fundamentally a secure default, this is not very + sympathetic to a misconfigured system. For example, such + a system is vulnerable to locking everyone out should the + rest of the file become badly written. + </para> + <para> + The module <command>pam_deny</command> (documented in a + <link linkend="sag-pam_deny">later section</link>) is not very + sophisticated. For example, it logs no information when it + is invoked so unless the users of a system contact the + administrator when failing to execute a service application, + the administrator may go for a long while in ignorance of the + fact that his system is misconfigured. + </para> + <para> + The addition of the following line before those in the above + example would provide a suitable warning to the administrator. + </para> + <programlisting> +# +# default; wake up! This application is not configured +# +other auth required pam_warn.so +other password required pam_warn.so + </programlisting> + <para> + Having two '<command>other auth</command>' lines is an + example of stacking. + </para> + <para> + On a system that uses the <filename>/etc/pam.d/</filename> + configuration, the corresponding default setup would be + achieved with the following file: + </para> + <programlisting> +# +# default configuration: /etc/pam.d/other +# +auth required pam_warn.so +auth required pam_deny.so +account required pam_deny.so +password required pam_warn.so +password required pam_deny.so +session required pam_deny.so + </programlisting> + <para> + This is the only explicit example we give for an + <filename>/etc/pam.d/</filename> file. In general, it + should be clear how to transpose the remaining examples + to this configuration scheme. + </para> + <para> + On a less sensitive computer, one on which the system + administrator wishes to remain ignorant of much of the + power of <emphasis remap='B'>Linux-PAM</emphasis>, the + following selection of lines (in + <filename>/etc/pam.d/other</filename>) is likely to + mimic the historically familiar Linux setup. + </para> + <programlisting> +# +# default; standard UN*X access +# +auth required pam_unix.so +account required pam_unix.so +password required pam_unix.so +session required pam_unix.so + </programlisting> + <para> + In general this will provide a starting place for most applications. + </para> + </section> + </chapter> + + <chapter id='sag-security-issues'> + <title>Security issues</title> + <section id='sag-scurity-issues-wrong'> + <title>If something goes wrong</title> + <para> + <emphasis remap='B'>Linux-PAM</emphasis> has the potential + to seriously change the security of your system. You can + choose to have no security or absolute security (no access + permitted). In general, <emphasis remap='B'>Linux-PAM</emphasis> + errs towards the latter. Any number of configuration errors + can dissable access to your system partially, or completely. + </para> + <para> + The most dramatic problem that is likely to be encountered when + configuring <emphasis remap='B'>Linux-PAM</emphasis> is that of + <emphasis>deleting</emphasis> the configuration file(s): + <filename>/etc/pam.d/*</filename> and/or + <filename>/etc/pam.conf</filename>. This will lock you out of + your own system! + </para> + <para> + To recover, your best bet is to restore the system from a + backup or boot the system into a rescue system and correct + things from there. + </para> + </section> + <section id='sag-security-issues-other'> + <title>Avoid having a weak `other' configuration</title> + <para> + It is not a good thing to have a weak default + (<emphasis remap='B'>other</emphasis>) entry. + This service is the default configuration for all PAM aware + applications and if it is weak, your system is likely to be + vulnerable to attack. + </para> + <para> + Here is a sample "other" configuration file. The + <command>pam_deny</command> module will deny access and the + <command>pam_warn</command> module will send a syslog message + to <emphasis>auth.notice</emphasis>: + </para> + <programlisting> +# +# The PAM configuration file for the `other' service +# +auth required pam_deny.so +auth required pam_warn.so +account required pam_deny.so +account required pam_warn.so +password required pam_deny.so +password required pam_warn.so +session required pam_deny.so +session required pam_warn.so + </programlisting> + </section> + </chapter> + + <chapter id='sag-module-reference'> + <title>A reference guide for available modules</title> + <para> + Here, we collect together the descriptions of the various modules + coming with Linux-PAM. + </para> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_access.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_cracklib.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_debug.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_deny.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_echo.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_env.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_exec.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_faildelay.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_filter.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_ftp.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_group.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_issue.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_keyinit.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_lastlog.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_limits.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_listfile.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_localuser.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_loginuid.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_mail.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_mkhomedir.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_motd.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_namespace.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_nologin.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_permit.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_rhosts.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_rootok.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_securetty.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_selinux.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_shells.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_succeed_if.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_tally.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_time.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_umask.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_unix.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_userdb.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_warn.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_wheel.xml"/> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="pam_xauth.xml"/> + </chapter> + + <chapter id="sag-see-also"> + <title>See also</title> + <itemizedlist> + <listitem> + <para> + The Linux-PAM Application Writers' Guide. + </para> + </listitem> + <listitem> + <para> + The Linux-PAM Module Writers' Guide. + </para> + </listitem> + <listitem> + <para> + The V. Samar and R. Schemers (SunSoft), ``UNIFIED LOGIN WITH + PLUGGABLE AUTHENTICATION MODULES'', Open Software Foundation + Request For Comments 86.0, October 1995. + </para> + </listitem> + </itemizedlist> + </chapter> + + <chapter id='sag-author'> + <title>Author/acknowledgments</title> + <para> + This document was written by Andrew G. Morgan (morgan@kernel.org) + with many contributions from + Chris Adams, Peter Allgeyer, Tim Baverstock, Tim Berger, + Craig S. Bell, Derrick J. Brashear, Ben Buxton, Seth Chaiklin, + Oliver Crow, Chris Dent, Marc Ewing, Cristian Gafton, + Emmanuel Galanos, Brad M. Garcia, Eric Hester, Michel D'Hooge, + Roger Hu, Eric Jacksch, Michael K. Johnson, David Kinchlea, + Olaf Kirch, Marcin Korzonek, Thorsten Kukuk, Stephen Langasek, + Nicolai Langfeldt, Elliot Lee, Luke Kenneth Casson Leighton, + Al Longyear, Ingo Luetkebohle, Marek Michalkiewicz, + Robert Milkowski, Aleph One, Martin Pool, Sean Reifschneider, + Jan Rekorajski, Erik Troan, Theodore Ts'o, Jeff Uphoff, Myles Uyema, + Savochkin Andrey Vladimirovich, Ronald Wahl, David Wood, John Wilmes, + Joseph S. D. Yao and Alex O. Yuriev. + </para> + <para> + Thanks are also due to Sun Microsystems, especially to Vipin Samar and + Charlie Lai for their advice. At an early stage in the development of + <emphasis remap='B'>Linux-PAM</emphasis>, Sun graciously made the + documentation for their implementation of PAM available. This act + greatly accelerated the development of + <emphasis remap='B'>Linux-PAM</emphasis>. + </para> + </chapter> + + <chapter id='sag-copyright'> + <title>Copyright information for this document</title> + <programlisting> +Copyright (c) 2006 Thorsten Kukuk <kukuk@thkukuk.de> +Copyright (c) 1996-2002 Andrew G. Morgan <morgan@kernel.org> + </programlisting> + <para> + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are + met: + </para> + <programlisting> +1. Redistributions of source code must retain the above copyright + notice, and the entire permission notice in its entirety, + including the disclaimer of warranties. + +2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + +3. The name of the author may not be used to endorse or promote + products derived from this software without specific prior + written permission. + </programlisting> + <para> + Alternatively, this product may be distributed under the terms of + the GNU General Public License (GPL), in which case the provisions + of the GNU GPL are required instead of the above restrictions. + (This clause is necessary due to a potential bad interaction between + the GNU GPL and the restrictions contained in a BSD-style copyright.) + </para> + <programlisting> +THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED +WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF +MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, +BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS +OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND +ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR +TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE +USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH + </programlisting> + </chapter> +</book> diff --git a/doc/sag/Makefile.am b/doc/sag/Makefile.am new file mode 100644 index 00000000..26b5f5b8 --- /dev/null +++ b/doc/sag/Makefile.am @@ -0,0 +1,97 @@ +# +# Copyright (c) 2006 Thorsten Kukuk <kukuk@thkukuk.de> +# + +CLEANFILES = Linux-PAM_SAG.fo *~ + +EXTRA_DIST = $(XMLS) + +XMLS = Linux-PAM_SAG.xml $(shell ls $(srcdir)/pam_*.xml) + +DEP_XMLS = $(shell ls $(top_srcdir)/modules/pam_*/pam_*.xml) + +if ENABLE_REGENERATE_MAN +MAINTAINERCLEANFILES = Linux-PAM_SAG.txt Linux-PAM_SAG.pdf html/*.html + +all: Linux-PAM_SAG.txt html/Linux-PAM_SAG.html Linux-PAM_SAG.pdf + +Linux-PAM_SAG.pdf: $(XMLS) $(DEP_XMLS) +if ENABLE_GENERATE_PDF + $(XMLLINT) --nonet --xinclude --postvalid --noent --noout $< + $(XSLTPROC) --stringparam generate.toc "book toc" \ + --stringparam section.autolabel 1 \ + --stringparam section.label.includes.component.label 1 \ + --stringparam toc.max.depth 2 --xinclude --nonet \ + http://docbook.sourceforge.net/release/xsl/current/fo/docbook.xsl $< > Linux-PAM_SAG.fo + $(FO2PDF) Linux-PAM_SAG.fo $@ +else + echo "No fo2pdf processor installed, skip PDF generation" +endif + +Linux-PAM_SAG.txt: $(XMLS) $(DEP_XMLS) + $(XMLLINT) --nonet --xinclude --postvalid --noent --noout $< + $(XSLTPROC) --stringparam generate.toc "book toc" \ + --stringparam section.autolabel 1 \ + --stringparam section.label.includes.component.label 1 \ + --stringparam toc.max.depth 2 --xinclude --nonet \ + http://docbook.sourceforge.net/release/xsl/current/html/docbook.xsl $< | $(BROWSER) > $@ + +html/Linux-PAM_SAG.html: $(XMLS) $(DEP_XMLS) + @test -d html || mkdir -p html + $(XMLLINT) --nonet --xinclude --postvalid --noent --noout $< + $(XSLTPROC) --stringparam base.dir html/ \ + --stringparam root.filename Linux-PAM_SAG \ + --stringparam use.id.as.filename 1 \ + --stringparam chunk.first.sections 1 \ + --stringparam section.autolabel 1 \ + --stringparam section.label.includes.component.label 1 \ + --stringparam toc.max.depth 2 --xinclude --nonet \ + http://docbook.sourceforge.net/release/xsl/current/html/chunk.xsl $< + +distclean-local: + -rm -rf html Linux-PAM_SAG.txt Linux-PAM_SAG.pdf +endif + +install-data-local: + $(mkinstalldirs) $(DESTDIR)$(docdir) + $(mkinstalldirs) $(DESTDIR)$(pdfdir) + $(mkinstalldirs) $(DESTDIR)$(htmldir) + test -f html/Linux-PAM_SAG.html || exit 0; \ + $(install_sh_DATA) html/Linux-PAM_SAG.html html/sag-*.html \ + $(DESTDIR)$(htmldir)/ || \ + $(install_sh_DATA) $(srcdir)/html/Linux-PAM_SAG.html \ + $(srcdir)/html/sag-*.html \ + $(DESTDIR)$(htmldir)/ + test -f Linux-PAM_SAG.txt || exit 0; \ + $(install_sh_DATA) Linux-PAM_SAG.txt $(DESTDIR)$(docdir)/ || \ + $(install_sh_DATA) $(srcdir)/Linux-PAM_SAG.txt \ + $(DESTDIR)$(docdir)/ + test -f Linux-PAM_SAG.pdf || exit 0; \ + $(install_sh_DATA) Linux-PAM_SAG.pdf $(DESTDIR)$(pdfdir)/ || \ + $(install_sh_DATA) $(srcdir)/Linux-PAM_SAG.pdf \ + $(DESTDIR)$(pdfdir)/ + +uninstall-local: + -rm $(DESTDIR)$(htmldir)/Linux-PAM_SAG.html + -rm $(DESTDIR)$(htmldir)/sag-*.html + -rm $(DESTDIR)$(docdir)/Linux-PAM_SAG.txt + -rm $(DESTDIR)$(pdfdir)/Linux-PAM_SAG.pdf + +releasedocs: all + $(mkinstalldirs) $(top_builddir)/Linux-PAM-$(VERSION)/doc/sag/html + test -f html/Linux-PAM_SAG.html || exit 0; \ + cp -ap html/Linux-PAM_SAG.html html/sag-*.html \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/sag/html/ || \ + cp -ap $(srcdir)/html/Linux-PAM_SAG.html \ + $(srcdir)/html/sag-*.html \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/sag/html/ + test -f Linux-PAM_SAG.txt || exit 0; \ + cp -p Linux-PAM_SAG.txt \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/sag/ || \ + cp -p $(srcdir)/Linux-PAM_SAG.txt \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/sag/ + test -f Linux-PAM_SAG.pdf || exit 0; \ + cp -p Linux-PAM_SAG.pdf \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/sag/ || \ + cp -p $(srcdir)/Linux-PAM_SAG.pdf \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/sag/ diff --git a/doc/sag/Makefile.in b/doc/sag/Makefile.in new file mode 100644 index 00000000..fac5e721 --- /dev/null +++ b/doc/sag/Makefile.in @@ -0,0 +1,473 @@ +# Makefile.in generated by automake 1.10.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +# +# Copyright (c) 2006 Thorsten Kukuk <kukuk@thkukuk.de> +# +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = @build@ +host_triplet = @host@ +subdir = doc/sag +DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in +ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 +am__aclocal_m4_deps = $(top_srcdir)/m4/gettext.m4 \ + $(top_srcdir)/m4/iconv.m4 \ + $(top_srcdir)/m4/jh_path_xml_catalog.m4 \ + $(top_srcdir)/m4/ld-O1.m4 $(top_srcdir)/m4/ld-as-needed.m4 \ + $(top_srcdir)/m4/lib-ld.m4 $(top_srcdir)/m4/lib-link.m4 \ + $(top_srcdir)/m4/lib-prefix.m4 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http://docbook.sourceforge.net/release/xsl/current/html/chunk.xsl $< + +@ENABLE_REGENERATE_MAN_TRUE@distclean-local: +@ENABLE_REGENERATE_MAN_TRUE@ -rm -rf html Linux-PAM_SAG.txt Linux-PAM_SAG.pdf + +install-data-local: + $(mkinstalldirs) $(DESTDIR)$(docdir) + $(mkinstalldirs) $(DESTDIR)$(pdfdir) + $(mkinstalldirs) $(DESTDIR)$(htmldir) + test -f html/Linux-PAM_SAG.html || exit 0; \ + $(install_sh_DATA) html/Linux-PAM_SAG.html html/sag-*.html \ + $(DESTDIR)$(htmldir)/ || \ + $(install_sh_DATA) $(srcdir)/html/Linux-PAM_SAG.html \ + $(srcdir)/html/sag-*.html \ + $(DESTDIR)$(htmldir)/ + test -f Linux-PAM_SAG.txt || exit 0; \ + $(install_sh_DATA) Linux-PAM_SAG.txt $(DESTDIR)$(docdir)/ || \ + $(install_sh_DATA) $(srcdir)/Linux-PAM_SAG.txt \ + $(DESTDIR)$(docdir)/ + test -f Linux-PAM_SAG.pdf || exit 0; \ + $(install_sh_DATA) Linux-PAM_SAG.pdf $(DESTDIR)$(pdfdir)/ || \ + $(install_sh_DATA) $(srcdir)/Linux-PAM_SAG.pdf \ + $(DESTDIR)$(pdfdir)/ + +uninstall-local: + -rm $(DESTDIR)$(htmldir)/Linux-PAM_SAG.html + -rm $(DESTDIR)$(htmldir)/sag-*.html + -rm $(DESTDIR)$(docdir)/Linux-PAM_SAG.txt + -rm $(DESTDIR)$(pdfdir)/Linux-PAM_SAG.pdf + +releasedocs: all + $(mkinstalldirs) $(top_builddir)/Linux-PAM-$(VERSION)/doc/sag/html + test -f html/Linux-PAM_SAG.html || exit 0; \ + cp -ap html/Linux-PAM_SAG.html html/sag-*.html \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/sag/html/ || \ + cp -ap $(srcdir)/html/Linux-PAM_SAG.html \ + $(srcdir)/html/sag-*.html \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/sag/html/ + test -f Linux-PAM_SAG.txt || exit 0; \ + cp -p Linux-PAM_SAG.txt \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/sag/ || \ + cp -p $(srcdir)/Linux-PAM_SAG.txt \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/sag/ + test -f Linux-PAM_SAG.pdf || exit 0; \ + cp -p Linux-PAM_SAG.pdf \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/sag/ || \ + cp -p $(srcdir)/Linux-PAM_SAG.pdf \ + $(top_builddir)/Linux-PAM-$(VERSION)/doc/sag/ +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/doc/sag/pam_access.xml b/doc/sag/pam_access.xml new file mode 100644 index 00000000..9e2837ca --- /dev/null +++ b/doc/sag/pam_access.xml @@ -0,0 +1,42 @@ +<?xml version='1.0' encoding='UTF-8'?> +<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" + "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<section id='sag-pam_access'> + <title>pam_access - logdaemon style login access control</title> + <cmdsynopsis> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../../modules/pam_access/pam_access.8.xml" xpointer='xpointer(//cmdsynopsis[@id = "pam_access-cmdsynopsis"]/*)'/> + </cmdsynopsis> + <section id='sag-pam_access-description'> + <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" + href="../../modules/pam_access/pam_access.8.xml" xpointer='xpointer(//refsect1[@id = "pam_access-description"]/*)'/> + </section> + <section id='sag-access.conf |