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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#include <sys/varargs.h>
#include <string.h>
#include <syslog.h>
#include <stdlib.h>
#include <security/pam_appl.h>
#include <security/pam_modules.h>
#include <security/pam_impl.h>
#include <libintl.h>
#include <passwdutil.h>
#include <smbsrv/libsmb.h>
/*PRINTFLIKE3*/
static void
error(boolean_t nowarn, pam_handle_t *pamh, char *fmt, ...)
{
va_list ap;
char message[PAM_MAX_MSG_SIZE];
if (nowarn)
return;
va_start(ap, fmt);
(void) vsnprintf(message, sizeof (message), fmt, ap);
(void) __pam_display_msg(pamh, PAM_ERROR_MSG, 1, &message,
NULL);
va_end(ap);
}
/*PRINTFLIKE3*/
static void
info(boolean_t nowarn, pam_handle_t *pamh, char *fmt, ...)
{
va_list ap;
char message[PAM_MAX_MSG_SIZE];
if (nowarn)
return;
va_start(ap, fmt);
(void) vsnprintf(message, sizeof (message), fmt, ap);
(void) __pam_display_msg(pamh, PAM_TEXT_INFO, 1, &message,
NULL);
va_end(ap);
}
int
pam_sm_chauthtok(pam_handle_t *pamh, int flags, int argc, const char **argv)
{
boolean_t debug = B_FALSE;
boolean_t nowarn = B_FALSE;
pwu_repository_t files_rep;
char *user, *local_user;
char *newpw;
char *service;
int privileged;
int res;
int i;
for (i = 0; i < argc; i++) {
if (strcmp(argv[i], "debug") == 0)
debug = B_TRUE;
else if (strcmp(argv[i], "nowarn") == 0)
nowarn = B_TRUE;
}
if ((flags & PAM_PRELIM_CHECK) != 0)
return (PAM_IGNORE);
if ((flags & PAM_UPDATE_AUTHTOK) == 0)
return (PAM_SYSTEM_ERR);
if ((flags & PAM_SILENT) != 0)
nowarn = B_TRUE;
if (debug)
__pam_log(LOG_AUTH | LOG_DEBUG,
"pam_smb_passwd: storing authtok");
(void) pam_get_item(pamh, PAM_SERVICE, (void **)&service);
(void) pam_get_item(pamh, PAM_USER, (void **)&user);
if (user == NULL || *user == '\0') {
__pam_log(LOG_AUTH | LOG_ERR,
"pam_smb_passwd: username is empty");
return (PAM_USER_UNKNOWN);
}
(void) pam_get_item(pamh, PAM_AUTHTOK, (void **)&newpw);
if (newpw == NULL) {
/*
* A module on the stack has removed PAM_AUTHTOK. We fail
*/
return (PAM_AUTHTOK_ERR);
}
/* Check to see if this is a local user */
files_rep.type = "files";
files_rep.scope = NULL;
files_rep.scope_len = 0;
res = __user_to_authenticate(user, &files_rep, &local_user,
&privileged);
if (res != PWU_SUCCESS) {
switch (res) {
case PWU_NOT_FOUND:
/* if not a local user, ignore */
if (debug) {
__pam_log(LOG_AUTH | LOG_DEBUG,
"pam_smb_passwd: %s is not local", user);
}
return (PAM_IGNORE);
case PWU_DENIED:
return (PAM_PERM_DENIED);
}
return (PAM_SYSTEM_ERR);
}
smb_pwd_init(B_FALSE);
res = smb_pwd_setpasswd(user, newpw);
smb_pwd_fini();
/*
* now map the various return states to user messages
* and PAM return codes.
*/
switch (res) {
case SMB_PWE_SUCCESS:
info(nowarn, pamh, dgettext(TEXT_DOMAIN,
"%s: SMB password successfully changed for %s"),
service, user);
return (PAM_SUCCESS);
case SMB_PWE_STAT_FAILED:
__pam_log(LOG_AUTH | LOG_ERR,
"%s: stat of SMB password file failed", service);
return (PAM_SYSTEM_ERR);
case SMB_PWE_OPEN_FAILED:
case SMB_PWE_WRITE_FAILED:
case SMB_PWE_CLOSE_FAILED:
case SMB_PWE_UPDATE_FAILED:
error(nowarn, pamh, dgettext(TEXT_DOMAIN,
"%s: Unexpected failure. SMB password database unchanged."),
service);
return (PAM_SYSTEM_ERR);
case SMB_PWE_BUSY:
error(nowarn, pamh, dgettext(TEXT_DOMAIN,
"%s: SMB password database busy. Try again later."),
service);
return (PAM_AUTHTOK_LOCK_BUSY);
case SMB_PWE_USER_UNKNOWN:
error(nowarn, pamh, dgettext(TEXT_DOMAIN,
"%s: %s does not exist."), service, user);
return (PAM_USER_UNKNOWN);
case SMB_PWE_USER_DISABLE:
error(nowarn, pamh, dgettext(TEXT_DOMAIN,
"%s: %s is disable. SMB password database unchanged."),
service, user);
return (PAM_IGNORE);
case SMB_PWE_DENIED:
return (PAM_PERM_DENIED);
default:
res = PAM_SYSTEM_ERR;
break;
}
return (res);
}
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