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/*
* pam_localuser module
*
* Copyright 2001, 2004 Red Hat, Inc.
* Copyright (c) 2020 Dmitry V. Levin <ldv@altlinux.org>
*
* 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.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <unistd.h>
#include <security/pam_modules.h>
#include <security/pam_modutil.h>
#include <security/pam_ext.h>
#include "pam_inline.h"
int
pam_sm_authenticate(pam_handle_t *pamh, int flags UNUSED,
int argc, const char **argv)
{
int i;
int rc;
int debug = 0;
const char *file_name = NULL;
const char *user_name = NULL;
/* Process arguments. */
for (i = 0; i < argc; ++i) {
if (strcmp("debug", argv[i]) == 0) {
debug = 1;
}
}
for (i = 0; i < argc; ++i) {
const char *str;
if (strcmp("debug", argv[i]) == 0) {
/* Already processed. */
continue;
}
if ((str = pam_str_skip_prefix(argv[i], "file=")) != NULL) {
file_name = str;
if (debug) {
pam_syslog(pamh, LOG_DEBUG,
"set filename to %s", file_name);
}
} else {
pam_syslog(pamh, LOG_ERR, "unrecognized option: %s",
argv[i]);
}
}
/* Obtain the user name. */
if ((rc = pam_get_user(pamh, &user_name, NULL)) != PAM_SUCCESS) {
pam_syslog(pamh, LOG_NOTICE, "cannot determine user name: %s",
pam_strerror(pamh, rc));
return rc == PAM_CONV_AGAIN ? PAM_INCOMPLETE : rc;
}
return pam_modutil_check_user_in_passwd(pamh, user_name, file_name);
}
int
pam_sm_setcred(pam_handle_t *pamh UNUSED, int flags UNUSED,
int argc UNUSED, const char **argv UNUSED)
{
return PAM_SUCCESS;
}
int
pam_sm_acct_mgmt(pam_handle_t *pamh, int flags, int argc, const char **argv)
{
return pam_sm_authenticate(pamh, flags, argc, argv);
}
int
pam_sm_open_session(pam_handle_t *pamh, int flags, int argc, const char **argv)
{
return pam_sm_authenticate(pamh, flags, argc, argv);
}
int
pam_sm_close_session(pam_handle_t *pamh, int flags, int argc, const char **argv)
{
return pam_sm_authenticate(pamh, flags, argc, argv);
}
int
pam_sm_chauthtok(pam_handle_t *pamh, int flags, int argc, const char **argv)
{
return pam_sm_authenticate(pamh, flags, argc, argv);
}
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