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Diffstat (limited to 'doc/man/pam_get_authtok.3')
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diff --git a/doc/man/pam_get_authtok.3 b/doc/man/pam_get_authtok.3 new file mode 100644 index 00000000..9127a22c --- /dev/null +++ b/doc/man/pam_get_authtok.3 @@ -0,0 +1,321 @@ +.\" Title: pam_get_authtok +.\" Author: [FIXME: author] [see http://docbook.sf.net/el/author] +.\" Generator: DocBook XSL Stylesheets v1.74.0 <http://docbook.sf.net/> +.\" Date: 04/01/2010 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" Language: English +.\" +.TH "PAM_GET_AUTHTOK" "3" "04/01/2010" "Linux-PAM Manual" "Linux-PAM Manual" +.\" ----------------------------------------------------------------- +.\" * (re)Define some macros +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" toupper - uppercase a string (locale-aware) +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de toupper +.tr aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ +\\$* +.tr aabbccddeeffgghhiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz +.. +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" SH-xref - format a cross-reference to an SH section +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de SH-xref +.ie n \{\ +.\} +.toupper \\$* +.el \{\ +\\$* +.\} +.. +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" SH - level-one heading that works better for non-TTY output +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de1 SH +.\" put an extra blank line of space above the head in non-TTY output +.if t \{\ +.sp 1 +.\} +.sp \\n[PD]u +.nr an-level 1 +.set-an-margin +.nr an-prevailing-indent \\n[IN] +.fi +.in \\n[an-margin]u +.ti 0 +.HTML-TAG ".NH \\n[an-level]" +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +\." make the size of the head bigger +.ps +3 +.ft B +.ne (2v + 1u) +.ie n \{\ +.\" if n (TTY output), use uppercase +.toupper \\$* +.\} +.el \{\ +.nr an-break-flag 0 +.\" if not n (not TTY), use normal case (not uppercase) +\\$1 +.in \\n[an-margin]u +.ti 0 +.\" if not n (not TTY), put a border/line under subheading +.sp -.6 +\l'\n(.lu' +.\} +.. +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" SS - level-two heading that works better for non-TTY output +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de1 SS +.sp \\n[PD]u +.nr an-level 1 +.set-an-margin +.nr an-prevailing-indent \\n[IN] +.fi +.in \\n[IN]u +.ti \\n[SN]u +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.ps \\n[PS-SS]u +\." make the size of the head bigger +.ps +2 +.ft B +.ne (2v + 1u) +.if \\n[.$] \&\\$* +.. +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" BB/BE - put background/screen (filled box) around block of text +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de BB +.if t \{\ +.sp -.5 +.br +.in +2n +.ll -2n +.gcolor red +.di BX +.\} +.. +.de EB +.if t \{\ +.if "\\$2"adjust-for-leading-newline" \{\ +.sp -1 +.\} +.br +.di +.in +.ll +.gcolor +.nr BW \\n(.lu-\\n(.i +.nr BH \\n(dn+.5v +.ne \\n(BHu+.5v +.ie "\\$2"adjust-for-leading-newline" \{\ +\M[\\$1]\h'1n'\v'+.5v'\D'P \\n(BWu 0 0 \\n(BHu -\\n(BWu 0 0 -\\n(BHu'\M[] +.\} +.el \{\ +\M[\\$1]\h'1n'\v'-.5v'\D'P \\n(BWu 0 0 \\n(BHu -\\n(BWu 0 0 -\\n(BHu'\M[] +.\} +.in 0 +.sp -.5v +.nf +.BX +.in +.sp .5v +.fi +.\} +.. +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" BM/EM - put colored marker in margin next to block of text +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de BM +.if t \{\ +.br +.ll -2n +.gcolor red +.di BX +.\} +.. +.de EM +.if t \{\ +.br +.di +.ll +.gcolor +.nr BH \\n(dn +.ne \\n(BHu +\M[\\$1]\D'P -.75n 0 0 \\n(BHu -(\\n[.i]u - \\n(INu - .75n) 0 0 -\\n(BHu'\M[] +.in 0 +.nf +.BX +.in +.fi +.\} +.. +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "Name" +pam_get_authtok \- get authentication token +.SH "Synopsis" +.sp +.ft B +.fam C +.ps -1 +.nf +#include <security/pam_ext\&.h> +.fi +.fam +.ps +1 +.ft +.fam C +.HP \w'int\ pam_get_authtok('u +.BI "int pam_get_authtok(pam_handle_t\ *" "pamh" ", int\ " "item" ", const\ char\ **" "authtok" ", const\ char\ *" "prompt" ");" +.fam +.fam C +.HP \w'int\ pam_get_authtok_noverify('u +.BI "int pam_get_authtok_noverify(pam_handle_t\ *" "pamh" ", const\ char\ **" "authtok" ", const\ char\ *" "prompt" ");" +.fam +.fam C +.HP \w'int\ pam_get_authtok_verify('u +.BI "int pam_get_authtok_verify(pam_handle_t\ *" "pamh" ", const\ char\ **" "authtok" ", const\ char\ *" "prompt" ");" +.fam +.SH "DESCRIPTION" +.PP +The +\fBpam_get_authtok\fR +function returns the cached authentication token, or prompts the user if no token is currently cached\&. It is intended for internal use by Linux\-PAM and PAM service modules\&. Upon successful return, +\fIauthtok\fR +contains a pointer to the value of the authentication token\&. Note, this is a pointer to the +\fIactual\fR +data and should +\fBnot\fR +be +\fIfree()\fR\'ed or over\-written! +.PP +The +\fIprompt\fR +argument specifies a prompt to use if no token is cached\&. If a NULL pointer is given, +\fBpam_get_authtok\fR +uses pre\-defined prompts\&. +.PP +The following values are supported for +\fIitem\fR: +.PP +PAM_AUTHTOK +.RS 4 +Returns the current authentication token\&. Called from +\fBpam_sm_chauthtok\fR(3) +\fBpam_get_authtok\fR +will ask the user to confirm the new token by retyping it\&. If a prompt was specified, "Retype" will be used as prefix\&. +.RE +.PP +PAM_OLDAUTHTOK +.RS 4 +Returns the previous authentication token when changing authentication tokens\&. +.RE +.PP +The +\fBpam_get_authtok_noverify\fR +function can only be used for changing the password (from +\fBpam_sm_chauthtok\fR(3))\&. It returns the cached authentication token, or prompts the user if no token is currently cached\&. The difference to +\fBpam_get_authtok\fR +is, that this function does not ask a second time for the password to verify it\&. Upon successful return, +\fIauthtok\fR +contains a pointer to the value of the authentication token\&. Note, this is a pointer to the +\fIactual\fR +data and should +\fBnot\fR +be +\fIfree()\fR\'ed or over\-written! +.PP +The +\fBpam_get_authtok_verify\fR +function can only be used to verify a password for mistypes gotten by +\fBpam_get_authtok_noverify\fR(3)\&. This function asks a second time for the password and verify it with the password provided by +\fIauthtok\fR +argument\&. In case of an error, the value of +\fIauthtok\fR +is undefined\&. Else this argument will point to the +\fIactual\fR +data and should +\fBnot\fR +be +\fIfree()\fR\'ed or over\-written! +.SH "OPTIONS" +.PP + +\fBpam_get_authtok\fR +honours the following module options: +.PP +\fBtry_first_pass\fR +.RS 4 +Before prompting the user for their password, the module first tries the previous stacked module\'s password in case that satisfies this module as well\&. +.RE +.PP +\fBuse_first_pass\fR +.RS 4 +The argument +\fBuse_first_pass\fR +forces the module to use a previous stacked modules password and will never prompt the user \- if no password is available or the password is not appropriate, the user will be denied access\&. +.RE +.PP +\fBuse_authtok\fR +.RS 4 +When password changing enforce the module to set the new token to the one provided by a previously stacked +\fBpassword\fR +module\&. If no token is available token changing will fail\&. +.RE +.PP +\fBauthtok_type=\fR\fB\fIXXX\fR\fR +.RS 4 +The default action is for the module to use the following prompts when requesting passwords: "New UNIX password: " and "Retype UNIX password: "\&. The example word +\fIUNIX\fR +can be replaced with this option, by default it is empty\&. +.RE +.SH "RETURN VALUES" +.PP +PAM_AUTH_ERR +.RS 4 +Authentication token could not be retrieved\&. +.RE +.PP +PAM_AUTHTOK_ERR +.RS 4 +New authentication could not be retrieved\&. +.RE +.PP +PAM_SUCCESS +.RS 4 +Authentication token was successfully retrieved\&. +.RE +.PP +PAM_SYSTEM_ERR +.RS 4 +No space for an authentication token was provided\&. +.RE +.PP +PAM_TRY_AGAIN +.RS 4 +New authentication tokens mismatch\&. +.RE +.SH "SEE ALSO" +.PP + +\fBpam\fR(8) +.SH "STANDARDS" +.PP +The +\fBpam_get_authtok\fR +function is a Linux\-PAM extensions\&. |