diff options
Diffstat (limited to 'usr/src/lib/pam_modules/smb/smb_passwd.c')
| -rw-r--r-- | usr/src/lib/pam_modules/smb/smb_passwd.c | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/usr/src/lib/pam_modules/smb/smb_passwd.c b/usr/src/lib/pam_modules/smb/smb_passwd.c new file mode 100644 index 0000000000..9167d093a6 --- /dev/null +++ b/usr/src/lib/pam_modules/smb/smb_passwd.c @@ -0,0 +1,202 @@ +/* + * 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 2007 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); + } + + res = smb_pwd_setpasswd(user, newpw); + + /* + * 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); +} |