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Diffstat (limited to 'modules/pam_userdb/pam_userdb.c')
-rw-r--r--modules/pam_userdb/pam_userdb.c307
1 files changed, 0 insertions, 307 deletions
diff --git a/modules/pam_userdb/pam_userdb.c b/modules/pam_userdb/pam_userdb.c
deleted file mode 100644
index 519ee898..00000000
--- a/modules/pam_userdb/pam_userdb.c
+++ /dev/null
@@ -1,307 +0,0 @@
-/* pam_userdb module */
-
-/*
- * $Id$
- * Written by Cristian Gafton <gafton@redhat.com> 1996/09/10
- * See the end of the file for Copyright Information
- */
-
-#include <security/_pam_aconf.h>
-
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <syslog.h>
-#include <stdarg.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <errno.h>
-
-#include "pam_userdb.h"
-
-#ifdef HAVE_NDBM_H
-# include <ndbm.h>
-#else
-# ifdef HAVE_DB_H
-# define DB_DBM_HSEARCH 1 /* use the dbm interface */
-# include <db.h>
-# else
-# error "failed to find a libdb or equivalent"
-# endif
-#endif
-
-/*
- * here, we make a definition for the externally accessible function
- * in this file (this definition is required for static a module
- * but strongly encouraged generally) it is used to instruct the
- * modules include file to define the function prototypes.
- */
-
-#define PAM_SM_AUTH
-#define PAM_SM_ACCOUNT
-
-#include <security/pam_modules.h>
-
-/* some syslogging */
-
-static void _pam_log(int err, const char *format, ...)
-{
- va_list args;
-
- va_start(args, format);
- openlog(MODULE_NAME, LOG_CONS|LOG_PID, LOG_AUTH);
- vsyslog(err, format, args);
- va_end(args);
- closelog();
-}
-
-char * database = NULL;
-static int ctrl = 0;
-
-static int _pam_parse(int argc, const char **argv)
-{
- /* step through arguments */
- for (ctrl = 0; argc-- > 0; ++argv) {
-
- /* generic options */
-
- if (!strcmp(*argv,"debug"))
- ctrl |= PAM_DEBUG_ARG;
- else if (!strcasecmp(*argv, "icase"))
- ctrl |= PAM_ICASE_ARG;
- else if (!strcasecmp(*argv, "dump"))
- ctrl |= PAM_DUMP_ARG;
- else if (!strncasecmp(*argv,"db=", 3)) {
- database = strdup((*argv) + 3);
- if (database == NULL)
- _pam_log(LOG_ERR, "pam_parse: could not parse argument \"%s\"",
- *argv);
- } else {
- _pam_log(LOG_ERR, "pam_parse: unknown option; %s", *argv);
- }
- }
-
- return ctrl;
-}
-
-
-/*
- * Looks up an user name in a database and checks the password
- *
- * return values:
- * 1 = User not found
- * 0 = OK
- * -1 = Password incorrect
- * -2 = System error
- */
-static int user_lookup(const char *user, const char *pass)
-{
- DBM *dbm;
- datum key, data;
-
- /* Open the DB file. */
- dbm = dbm_open(database, O_RDONLY, 0644);
- if (dbm == NULL) {
- _pam_log(LOG_ERR, "user_lookup: could not open database `%s'",
- database);
- return -2;
- }
-
- if (ctrl &PAM_DUMP_ARG) {
- _pam_log(LOG_INFO, "Database dump:");
- for (key = dbm_firstkey(dbm); key.dptr != NULL;
- key = dbm_nextkey(dbm)) {
- data = dbm_fetch(dbm, key);
- _pam_log(LOG_INFO, "key[len=%d] = `%s', data[len=%d] = `%s'",
- key.dsize, key.dptr, data.dsize, data.dptr);
- }
- }
- /* do some more init work */
-
- memset(&key, 0, sizeof(key));
- memset(&data, 0, sizeof(data));
- key.dptr = x_strdup(user);
- key.dsize = strlen(user);
- user = NULL;
-
- if (key.dptr) {
- data = dbm_fetch(dbm, key);
- memset(key.dptr, 0, key.dsize);
- free(key.dptr);
- }
-
- if (ctrl & PAM_DEBUG_ARG) {
- _pam_log(LOG_INFO, "password in database is [%p]`%s', len is %d",
- data.dptr, (char *) data.dptr, data.dsize);
- }
-
- if (data.dptr != NULL) {
- int compare = 0;
-
- if (strlen(pass) != data.dsize) {
- compare = 1;
- } else if (ctrl & PAM_ICASE_ARG) {
- compare = strncasecmp(data.dptr, pass, data.dsize);
- } else {
- compare = strncmp(data.dptr, pass, data.dsize);
- }
- dbm_close(dbm);
- if (compare == 0)
- return 0; /* match */
- else
- return -1; /* wrong */
- } else {
- if (ctrl & PAM_DEBUG_ARG) {
- _pam_log(LOG_INFO, "error returned by dbm_fetch: %s",
- strerror(errno));
- }
- dbm_close(dbm);
- /* probably we should check dbm_error() here */
- return 1; /* not found */
- }
-
- /* NOT REACHED */
- return -2;
-}
-
-/* --- authentication management functions (only) --- */
-
-PAM_EXTERN
-int pam_sm_authenticate(pam_handle_t *pamh, int flags,
- int argc, const char **argv)
-{
- const char *username;
- const char *password;
- int retval = PAM_AUTH_ERR;
-
- /* parse arguments */
- ctrl = _pam_parse(argc, argv);
-
- /* Get the username */
- retval = pam_get_user(pamh, &username, NULL);
- if ((retval != PAM_SUCCESS) || (!username)) {
- if (ctrl & PAM_DEBUG_ARG)
- _pam_log(LOG_DEBUG,"can not get the username");
- return PAM_SERVICE_ERR;
- }
-
- /* Converse just to be sure we have the password */
- retval = conversation(pamh);
- if (retval != PAM_SUCCESS) {
- _pam_log(LOG_ERR, "could not obtain password for `%s'",
- username);
- return -2;
- }
-
- /* Get the password */
- retval = pam_get_item(pamh, PAM_AUTHTOK, (const void **)&password);
- if (retval != PAM_SUCCESS) {
- _pam_log(LOG_ERR, "Could not retrive user's password");
- return -2;
- }
-
- if (ctrl & PAM_DEBUG_ARG)
- _pam_log(LOG_INFO, "Verify user `%s' with password `%s'",
- username, password);
-
- /* Now use the username to look up password in the database file */
- retval = user_lookup(username, password);
- switch (retval) {
- case -2:
- /* some sort of system error. The log was already printed */
- return PAM_SERVICE_ERR;
- case -1:
- /* incorrect password */
- _pam_log(LOG_WARNING,
- "user `%s' denied access (incorrect password)",
- username);
- return PAM_AUTH_ERR;
- case 1:
- /* the user does not exist in the database */
- if (ctrl & PAM_DEBUG_ARG)
- _pam_log(LOG_NOTICE, "user `%s' not found in the database",
- username);
- return PAM_USER_UNKNOWN;
- case 0:
- /* Otherwise, the authentication looked good */
- _pam_log(LOG_NOTICE, "user '%s' granted acces", username);
- return PAM_SUCCESS;
- default:
- /* we don't know anything about this return value */
- _pam_log(LOG_ERR,
- "internal module error (retval = %d, user = `%s'",
- retval, username);
- return PAM_SERVICE_ERR;
- }
-
- /* should not be reached */
- return PAM_IGNORE;
-}
-
-PAM_EXTERN
-int pam_sm_setcred(pam_handle_t *pamh, int flags,
- int argc, const char **argv)
-{
- return PAM_SUCCESS;
-}
-
-PAM_EXTERN
-int pam_sm_acct_mgmt(pam_handle_t *pamh, int flags,
- int argc, const char **argv)
-{
- return PAM_SUCCESS;
-}
-
-
-#ifdef PAM_STATIC
-
-/* static module data */
-
-struct pam_module _pam_userdb_modstruct = {
- "pam_userdb",
- pam_sm_authenticate,
- pam_sm_setcred,
- NULL,
- NULL,
- NULL,
- NULL,
-};
-
-#endif
-
-/*
- * Copyright (c) Cristian Gafton <gafton@redhat.com>, 1999
- * All rights reserved
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 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.
- *
- * ALTERNATIVELY, this product may be distributed under the terms of
- * the GNU Public License, in which case the provisions of the GPL are
- * required INSTEAD OF the above restrictions. (This clause is
- * necessary due to a potential bad interaction between the GPL and
- * the restrictions contained in a BSD-style copyright.)
- *
- * 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 DAMAGE.
- */
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