3 Copyright Andrew Tridgell <tridge@samba.org> 2000
4 Copyright Tim Potter <tpot@samba.org> 2000
5 Copyright Andrew Bartlett <abartlet@samba.org> 2002
6 Copyright Guenther Deschner <gd@samba.org> 2005-2008
8 largely based on pam_userdb by Cristian Gafton <gafton@redhat.com> also
9 contains large slabs of code from pam_unix by Elliot Lee
10 <sopwith@redhat.com> (see copyright below for full details)
13 #include "pam_winbind.h"
15 enum pam_winbind_request_type
17 PAM_WINBIND_AUTHENTICATE
,
19 PAM_WINBIND_ACCT_MGMT
,
20 PAM_WINBIND_OPEN_SESSION
,
21 PAM_WINBIND_CLOSE_SESSION
,
22 PAM_WINBIND_CHAUTHTOK
,
26 static int wbc_error_to_pam_error(wbcErr status
)
31 case WBC_ERR_NOT_IMPLEMENTED
:
32 return PAM_SERVICE_ERR
;
33 case WBC_ERR_UNKNOWN_FAILURE
:
35 case WBC_ERR_NO_MEMORY
:
37 case WBC_ERR_INVALID_SID
:
38 case WBC_ERR_INVALID_PARAM
:
40 case WBC_ERR_WINBIND_NOT_AVAILABLE
:
41 return PAM_AUTHINFO_UNAVAIL
;
42 case WBC_ERR_DOMAIN_NOT_FOUND
:
43 return PAM_AUTHINFO_UNAVAIL
;
44 case WBC_ERR_INVALID_RESPONSE
:
46 case WBC_ERR_NSS_ERROR
:
47 return PAM_USER_UNKNOWN
;
48 case WBC_ERR_AUTH_ERROR
:
50 case WBC_ERR_UNKNOWN_USER
:
51 return PAM_USER_UNKNOWN
;
52 case WBC_ERR_UNKNOWN_GROUP
:
53 return PAM_USER_UNKNOWN
;
54 case WBC_ERR_PWD_CHANGE_FAILED
:
62 static const char *_pam_error_code_str(int err
)
68 return "PAM_OPEN_ERR";
70 return "PAM_SYMBOL_ERR";
72 return "PAM_SERVICE_ERR";
74 return "PAM_SYSTEM_ERR";
78 return "PAM_PERM_DENIED";
80 return "PAM_AUTH_ERR";
81 case PAM_CRED_INSUFFICIENT
:
82 return "PAM_CRED_INSUFFICIENT";
83 case PAM_AUTHINFO_UNAVAIL
:
84 return "PAM_AUTHINFO_UNAVAIL";
85 case PAM_USER_UNKNOWN
:
86 return "PAM_USER_UNKNOWN";
88 return "PAM_MAXTRIES";
89 case PAM_NEW_AUTHTOK_REQD
:
90 return "PAM_NEW_AUTHTOK_REQD";
91 case PAM_ACCT_EXPIRED
:
92 return "PAM_ACCT_EXPIRED";
94 return "PAM_SESSION_ERR";
95 case PAM_CRED_UNAVAIL
:
96 return "PAM_CRED_UNAVAIL";
97 case PAM_CRED_EXPIRED
:
98 return "PAM_CRED_EXPIRED";
100 return "PAM_CRED_ERR";
101 case PAM_NO_MODULE_DATA
:
102 return "PAM_NO_MODULE_DATA";
104 return "PAM_CONV_ERR";
105 case PAM_AUTHTOK_ERR
:
106 return "PAM_AUTHTOK_ERR";
107 case PAM_AUTHTOK_RECOVER_ERR
:
108 return "PAM_AUTHTOK_RECOVER_ERR";
109 case PAM_AUTHTOK_LOCK_BUSY
:
110 return "PAM_AUTHTOK_LOCK_BUSY";
111 case PAM_AUTHTOK_DISABLE_AGING
:
112 return "PAM_AUTHTOK_DISABLE_AGING";
114 return "PAM_TRY_AGAIN";
119 case PAM_AUTHTOK_EXPIRED
:
120 return "PAM_AUTHTOK_EXPIRED";
121 #ifdef PAM_MODULE_UNKNOWN
122 case PAM_MODULE_UNKNOWN
:
123 return "PAM_MODULE_UNKNOWN";
127 return "PAM_BAD_ITEM";
129 #ifdef PAM_CONV_AGAIN
131 return "PAM_CONV_AGAIN";
133 #ifdef PAM_INCOMPLETE
135 return "PAM_INCOMPLETE";
142 #define _PAM_LOG_FUNCTION_ENTER(function, ctx) \
144 _pam_log_debug(ctx, LOG_DEBUG, "[pamh: %p] ENTER: " \
145 function " (flags: 0x%04x)", ctx->pamh, ctx->flags); \
146 _pam_log_state(ctx); \
149 #define _PAM_LOG_FUNCTION_LEAVE(function, ctx, retval) \
151 _pam_log_debug(ctx, LOG_DEBUG, "[pamh: %p] LEAVE: " \
152 function " returning %d (%s)", ctx ? ctx->pamh : NULL, retval, \
153 _pam_error_code_str(retval)); \
154 _pam_log_state(ctx); \
159 #define MAX_PASSWD_TRIES 3
162 static char initialized
= 0;
164 static inline void textdomain_init(void);
165 static inline void textdomain_init(void)
168 bindtextdomain(MODULE_NAME
, LOCALEDIR
);
176 /* some syslogging */
178 #ifdef HAVE_PAM_VSYSLOG
179 static void _pam_log_int(const pam_handle_t
*pamh
,
184 pam_vsyslog(pamh
, err
, format
, args
);
187 static void _pam_log_int(const pam_handle_t
*pamh
,
192 char *format2
= NULL
;
196 pam_get_item(pamh
, PAM_SERVICE
, (const void **) &service
);
198 ret
= asprintf(&format2
, "%s(%s): %s", MODULE_NAME
, service
, format
);
200 /* what else todo ? */
201 vsyslog(err
, format
, args
);
205 vsyslog(err
, format2
, args
);
208 #endif /* HAVE_PAM_VSYSLOG */
210 static bool _pam_log_is_silent(int ctrl
)
212 return on(ctrl
, WINBIND_SILENT
);
215 static void _pam_log(struct pwb_context
*r
, int err
, const char *format
, ...) PRINTF_ATTRIBUTE(3,4);
216 static void _pam_log(struct pwb_context
*r
, int err
, const char *format
, ...)
220 if (_pam_log_is_silent(r
->ctrl
)) {
224 va_start(args
, format
);
225 _pam_log_int(r
->pamh
, err
, format
, args
);
228 static void __pam_log(const pam_handle_t
*pamh
, int ctrl
, int err
, const char *format
, ...) PRINTF_ATTRIBUTE(4,5);
229 static void __pam_log(const pam_handle_t
*pamh
, int ctrl
, int err
, const char *format
, ...)
233 if (_pam_log_is_silent(ctrl
)) {
237 va_start(args
, format
);
238 _pam_log_int(pamh
, err
, format
, args
);
242 static bool _pam_log_is_debug_enabled(int ctrl
)
248 if (_pam_log_is_silent(ctrl
)) {
252 if (!(ctrl
& WINBIND_DEBUG_ARG
)) {
259 static bool _pam_log_is_debug_state_enabled(int ctrl
)
261 if (!(ctrl
& WINBIND_DEBUG_STATE
)) {
265 return _pam_log_is_debug_enabled(ctrl
);
268 static void _pam_log_debug(struct pwb_context
*r
, int err
, const char *format
, ...) PRINTF_ATTRIBUTE(3,4);
269 static void _pam_log_debug(struct pwb_context
*r
, int err
, const char *format
, ...)
273 if (!r
|| !_pam_log_is_debug_enabled(r
->ctrl
)) {
277 va_start(args
, format
);
278 _pam_log_int(r
->pamh
, err
, format
, args
);
281 static void __pam_log_debug(const pam_handle_t
*pamh
, int ctrl
, int err
, const char *format
, ...) PRINTF_ATTRIBUTE(4,5);
282 static void __pam_log_debug(const pam_handle_t
*pamh
, int ctrl
, int err
, const char *format
, ...)
286 if (!_pam_log_is_debug_enabled(ctrl
)) {
290 va_start(args
, format
);
291 _pam_log_int(pamh
, err
, format
, args
);
295 static void _pam_log_state_datum(struct pwb_context
*ctx
,
300 const void *data
= NULL
;
301 if (item_type
!= 0) {
302 pam_get_item(ctx
->pamh
, item_type
, &data
);
304 pam_get_data(ctx
->pamh
, key
, &data
);
307 const char *type
= (item_type
!= 0) ? "ITEM" : "DATA";
308 if (is_string
!= 0) {
309 _pam_log_debug(ctx
, LOG_DEBUG
,
310 "[pamh: %p] STATE: %s(%s) = \"%s\" (%p)",
311 ctx
->pamh
, type
, key
, (const char *)data
,
314 _pam_log_debug(ctx
, LOG_DEBUG
,
315 "[pamh: %p] STATE: %s(%s) = %p",
316 ctx
->pamh
, type
, key
, data
);
321 #define _PAM_LOG_STATE_DATA_POINTER(ctx, module_data_name) \
322 _pam_log_state_datum(ctx, 0, module_data_name, 0)
324 #define _PAM_LOG_STATE_DATA_STRING(ctx, module_data_name) \
325 _pam_log_state_datum(ctx, 0, module_data_name, 1)
327 #define _PAM_LOG_STATE_ITEM_POINTER(ctx, item_type) \
328 _pam_log_state_datum(ctx, item_type, #item_type, 0)
330 #define _PAM_LOG_STATE_ITEM_STRING(ctx, item_type) \
331 _pam_log_state_datum(ctx, item_type, #item_type, 1)
333 #ifdef DEBUG_PASSWORD
334 #define _LOG_PASSWORD_AS_STRING 1
336 #define _LOG_PASSWORD_AS_STRING 0
339 #define _PAM_LOG_STATE_ITEM_PASSWORD(ctx, item_type) \
340 _pam_log_state_datum(ctx, item_type, #item_type, \
341 _LOG_PASSWORD_AS_STRING)
343 * wrapper to preserve old behaviour of iniparser which ignored
344 * key values that had no value assigned like
346 * for a key like above newer iniparser will return a zero-length
347 * string, previously iniparser would return NULL
349 * JRA: For compatibility, tiniparser behaves like iniparser.
351 static const char *tiniparser_getstring_nonempty(struct tiniparser_dictionary
*d
,
355 const char *ret
= tiniparser_getstring(d
, key
, def
);
356 if (ret
&& strlen(ret
) == 0) {
362 static void _pam_log_state(struct pwb_context
*ctx
)
364 if (!ctx
|| !_pam_log_is_debug_state_enabled(ctx
->ctrl
)) {
368 _PAM_LOG_STATE_ITEM_STRING(ctx
, PAM_SERVICE
);
369 _PAM_LOG_STATE_ITEM_STRING(ctx
, PAM_USER
);
370 _PAM_LOG_STATE_ITEM_STRING(ctx
, PAM_TTY
);
371 _PAM_LOG_STATE_ITEM_STRING(ctx
, PAM_RHOST
);
372 _PAM_LOG_STATE_ITEM_STRING(ctx
, PAM_RUSER
);
373 _PAM_LOG_STATE_ITEM_PASSWORD(ctx
, PAM_OLDAUTHTOK
);
374 _PAM_LOG_STATE_ITEM_PASSWORD(ctx
, PAM_AUTHTOK
);
375 _PAM_LOG_STATE_ITEM_STRING(ctx
, PAM_USER_PROMPT
);
376 _PAM_LOG_STATE_ITEM_POINTER(ctx
, PAM_CONV
);
377 #ifdef PAM_FAIL_DELAY
378 _PAM_LOG_STATE_ITEM_POINTER(ctx
, PAM_FAIL_DELAY
);
380 #ifdef PAM_REPOSITORY
381 _PAM_LOG_STATE_ITEM_POINTER(ctx
, PAM_REPOSITORY
);
384 _PAM_LOG_STATE_DATA_STRING(ctx
, PAM_WINBIND_HOMEDIR
);
385 _PAM_LOG_STATE_DATA_STRING(ctx
, PAM_WINBIND_LOGONSCRIPT
);
386 _PAM_LOG_STATE_DATA_STRING(ctx
, PAM_WINBIND_LOGONSERVER
);
387 _PAM_LOG_STATE_DATA_STRING(ctx
, PAM_WINBIND_PROFILEPATH
);
388 _PAM_LOG_STATE_DATA_STRING(ctx
,
389 PAM_WINBIND_NEW_AUTHTOK_REQD
);
390 /* Use atoi to get PAM result code */
391 _PAM_LOG_STATE_DATA_STRING(ctx
,
392 PAM_WINBIND_NEW_AUTHTOK_REQD_DURING_AUTH
);
393 _PAM_LOG_STATE_DATA_POINTER(ctx
, PAM_WINBIND_PWD_LAST_SET
);
396 static int _pam_parse(const pam_handle_t
*pamh
,
400 enum pam_winbind_request_type type
,
401 struct tiniparser_dictionary
**result_d
)
404 const char *config_file
= NULL
;
407 struct tiniparser_dictionary
*d
= NULL
;
409 if (flags
& PAM_SILENT
) {
410 ctrl
|= WINBIND_SILENT
;
413 for (i
=argc
,v
=argv
; i
-- > 0; ++v
) {
414 if (!strncasecmp(*v
, "config", strlen("config"))) {
415 ctrl
|= WINBIND_CONFIG_FILE
;
421 if (config_file
== NULL
) {
422 config_file
= PAM_WINBIND_CONFIG_FILE
;
425 d
= tiniparser_load(config_file
);
427 goto config_from_pam
;
430 if (tiniparser_getboolean(d
, "global:debug", false)) {
431 ctrl
|= WINBIND_DEBUG_ARG
;
434 if (tiniparser_getboolean(d
, "global:debug_state", false)) {
435 ctrl
|= WINBIND_DEBUG_STATE
;
438 if (tiniparser_getboolean(d
, "global:cached_login", false)) {
439 ctrl
|= WINBIND_CACHED_LOGIN
;
442 if (tiniparser_getboolean(d
, "global:krb5_auth", false)) {
443 ctrl
|= WINBIND_KRB5_AUTH
;
446 if (tiniparser_getboolean(d
, "global:silent", false)) {
447 ctrl
|= WINBIND_SILENT
;
450 if (tiniparser_getstring_nonempty(d
, "global:krb5_ccache_type", NULL
) != NULL
) {
451 ctrl
|= WINBIND_KRB5_CCACHE_TYPE
;
454 if ((tiniparser_getstring_nonempty(d
, "global:require-membership-of", NULL
)
456 (tiniparser_getstring_nonempty(d
, "global:require_membership_of", NULL
)
458 ctrl
|= WINBIND_REQUIRED_MEMBERSHIP
;
461 if (tiniparser_getboolean(d
, "global:try_first_pass", false)) {
462 ctrl
|= WINBIND_TRY_FIRST_PASS_ARG
;
465 if (tiniparser_getint(d
, "global:warn_pwd_expire", 0)) {
466 ctrl
|= WINBIND_WARN_PWD_EXPIRE
;
469 if (tiniparser_getboolean(d
, "global:mkhomedir", false)) {
470 ctrl
|= WINBIND_MKHOMEDIR
;
474 /* step through arguments */
475 for (i
=argc
,v
=argv
; i
-- > 0; ++v
) {
477 /* generic options */
478 if (!strcmp(*v
,"debug"))
479 ctrl
|= WINBIND_DEBUG_ARG
;
480 else if (!strcasecmp(*v
, "debug_state"))
481 ctrl
|= WINBIND_DEBUG_STATE
;
482 else if (!strcasecmp(*v
, "silent"))
483 ctrl
|= WINBIND_SILENT
;
484 else if (!strcasecmp(*v
, "use_authtok"))
485 ctrl
|= WINBIND_USE_AUTHTOK_ARG
;
486 else if (!strcasecmp(*v
, "use_first_pass"))
487 ctrl
|= WINBIND_USE_FIRST_PASS_ARG
;
488 else if (!strcasecmp(*v
, "try_first_pass"))
489 ctrl
|= WINBIND_TRY_FIRST_PASS_ARG
;
490 else if (!strcasecmp(*v
, "unknown_ok"))
491 ctrl
|= WINBIND_UNKNOWN_OK_ARG
;
492 else if ((type
== PAM_WINBIND_AUTHENTICATE
493 || type
== PAM_WINBIND_SETCRED
)
494 && !strncasecmp(*v
, "require_membership_of",
495 strlen("require_membership_of")))
496 ctrl
|= WINBIND_REQUIRED_MEMBERSHIP
;
497 else if ((type
== PAM_WINBIND_AUTHENTICATE
498 || type
== PAM_WINBIND_SETCRED
)
499 && !strncasecmp(*v
, "require-membership-of",
500 strlen("require-membership-of")))
501 ctrl
|= WINBIND_REQUIRED_MEMBERSHIP
;
502 else if (!strcasecmp(*v
, "krb5_auth"))
503 ctrl
|= WINBIND_KRB5_AUTH
;
504 else if (!strncasecmp(*v
, "krb5_ccache_type",
505 strlen("krb5_ccache_type")))
506 ctrl
|= WINBIND_KRB5_CCACHE_TYPE
;
507 else if (!strcasecmp(*v
, "cached_login"))
508 ctrl
|= WINBIND_CACHED_LOGIN
;
509 else if (!strcasecmp(*v
, "mkhomedir"))
510 ctrl
|= WINBIND_MKHOMEDIR
;
511 else if (!strncasecmp(*v
, "warn_pwd_expire",
512 strlen("warn_pwd_expire")))
513 ctrl
|= WINBIND_WARN_PWD_EXPIRE
;
514 else if (type
!= PAM_WINBIND_CLEANUP
) {
515 __pam_log(pamh
, ctrl
, LOG_ERR
,
516 "pam_parse: unknown option: %s", *v
);
526 tiniparser_freedict(d
);
533 static int _pam_winbind_free_context(struct pwb_context
*ctx
)
540 tiniparser_freedict(ctx
->dict
);
543 wbcCtxFree(ctx
->wbc_ctx
);
548 static int _pam_winbind_init_context(pam_handle_t
*pamh
,
552 enum pam_winbind_request_type type
,
553 struct pwb_context
**ctx_p
)
555 struct pwb_context
*r
= NULL
;
562 r
= talloc_zero(NULL
, struct pwb_context
);
567 talloc_set_destructor(r
, _pam_winbind_free_context
);
573 ctrl_code
= _pam_parse(pamh
, flags
, argc
, argv
, type
, &r
->dict
);
574 if (ctrl_code
== -1) {
576 return PAM_SYSTEM_ERR
;
580 r
->wbc_ctx
= wbcCtxCreate();
581 if (r
->wbc_ctx
== NULL
) {
583 return PAM_SYSTEM_ERR
;
591 static void _pam_winbind_cleanup_func(pam_handle_t
*pamh
,
595 int ctrl
= _pam_parse(pamh
, 0, 0, NULL
, PAM_WINBIND_CLEANUP
, NULL
);
596 if (_pam_log_is_debug_state_enabled(ctrl
)) {
597 __pam_log_debug(pamh
, ctrl
, LOG_DEBUG
,
598 "[pamh: %p] CLEAN: cleaning up PAM data %p "
599 "(error_status = %d)", pamh
, data
,
606 static const struct ntstatus_errors
{
607 const char *ntstatus_string
;
608 const char *error_string
;
609 } ntstatus_errors
[] = {
612 {"NT_STATUS_BACKUP_CONTROLLER",
613 N_("No primary Domain Controller available")},
614 {"NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND",
615 N_("No domain controllers found")},
616 {"NT_STATUS_NO_LOGON_SERVERS",
617 N_("No logon servers")},
618 {"NT_STATUS_PWD_TOO_SHORT",
619 N_("Password too short")},
620 {"NT_STATUS_PWD_TOO_RECENT",
621 N_("The password of this user is too recent to change")},
622 {"NT_STATUS_PWD_HISTORY_CONFLICT",
623 N_("Password is already in password history")},
624 {"NT_STATUS_PASSWORD_EXPIRED",
625 N_("Your password has expired")},
626 {"NT_STATUS_PASSWORD_MUST_CHANGE",
627 N_("You need to change your password now")},
628 {"NT_STATUS_INVALID_WORKSTATION",
629 N_("You are not allowed to logon from this workstation")},
630 {"NT_STATUS_INVALID_LOGON_HOURS",
631 N_("You are not allowed to logon at this time")},
632 {"NT_STATUS_ACCOUNT_EXPIRED",
633 N_("Your account has expired. "
634 "Please contact your System administrator")}, /* SCNR */
635 {"NT_STATUS_ACCOUNT_DISABLED",
636 N_("Your account is disabled. "
637 "Please contact your System administrator")}, /* SCNR */
638 {"NT_STATUS_ACCOUNT_LOCKED_OUT",
639 N_("Your account has been locked. "
640 "Please contact your System administrator")}, /* SCNR */
641 {"NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT",
642 N_("Invalid Trust Account")},
643 {"NT_STATUS_NOLOGON_SERVER_TRUST_ACCOUNT",
644 N_("Invalid Trust Account")},
645 {"NT_STATUS_NOLOGON_INTERDOMAIN_TRUST_ACCOUNT",
646 N_("Invalid Trust Account")},
647 {"NT_STATUS_ACCESS_DENIED",
648 N_("Access is denied")},
652 static const char *_get_ntstatus_error_string(const char *nt_status_string
)
655 for (i
=0; ntstatus_errors
[i
].ntstatus_string
!= NULL
; i
++) {
656 if (!strcasecmp(ntstatus_errors
[i
].ntstatus_string
,
658 return _(ntstatus_errors
[i
].error_string
);
664 /* --- authentication management functions --- */
666 /* Attempt a conversation */
668 static int converse(const pam_handle_t
*pamh
,
670 const struct pam_message
**message
,
671 struct pam_response
**response
)
674 struct pam_conv
*conv
;
676 retval
= pam_get_item(pamh
, PAM_CONV
, (const void **) &conv
);
677 if (retval
== PAM_SUCCESS
) {
678 retval
= conv
->conv(nargs
,
679 discard_const_p(const struct pam_message
*, message
),
680 response
, conv
->appdata_ptr
);
683 return retval
; /* propagate error status */
687 static int _make_remark(struct pwb_context
*ctx
,
691 int retval
= PAM_SUCCESS
;
693 const struct pam_message
*pmsg
[1];
694 struct pam_message msg
[1];
695 struct pam_response
*resp
;
697 if (ctx
->flags
& WINBIND_SILENT
) {
702 msg
[0].msg
= discard_const_p(char, text
);
703 msg
[0].msg_style
= type
;
706 retval
= converse(ctx
->pamh
, 1, pmsg
, &resp
);
709 _pam_drop_reply(resp
, 1);
714 static int _make_remark_v(struct pwb_context
*ctx
,
722 ret
= vasprintf(&var
, format
, args
);
724 _pam_log(ctx
, LOG_ERR
, "memory allocation failure");
728 ret
= _make_remark(ctx
, type
, var
);
733 static int _make_remark_format(struct pwb_context
*ctx
, int type
, const char *format
, ...) PRINTF_ATTRIBUTE(3,4);
734 static int _make_remark_format(struct pwb_context
*ctx
, int type
, const char *format
, ...)
739 va_start(args
, format
);
740 ret
= _make_remark_v(ctx
, type
, format
, args
);
745 static int pam_winbind_request_log(struct pwb_context
*ctx
,
752 /* incorrect password */
753 _pam_log(ctx
, LOG_WARNING
, "user '%s' denied access "
754 "(incorrect password or invalid membership)", user
);
756 case PAM_ACCT_EXPIRED
:
757 /* account expired */
758 _pam_log(ctx
, LOG_WARNING
, "user '%s' account expired",
761 case PAM_AUTHTOK_EXPIRED
:
762 /* password expired */
763 _pam_log(ctx
, LOG_WARNING
, "user '%s' password expired",
766 case PAM_NEW_AUTHTOK_REQD
:
767 /* new password required */
768 _pam_log(ctx
, LOG_WARNING
, "user '%s' new password "
771 case PAM_USER_UNKNOWN
:
772 /* the user does not exist */
773 _pam_log_debug(ctx
, LOG_NOTICE
, "user '%s' not found",
775 if (ctx
->ctrl
& WINBIND_UNKNOWN_OK_ARG
) {
779 case PAM_AUTHTOK_ERR
:
780 /* Authentication token manipulation error */
781 _pam_log(ctx
, LOG_WARNING
, "user `%s' authentication token change failed "
782 "(pwd complexity/history/min_age not met?)", user
);
785 /* Otherwise, the authentication looked good */
786 if (strcmp(fn
, "wbcLogonUser") == 0) {
787 _pam_log(ctx
, LOG_NOTICE
,
788 "user '%s' granted access", user
);
790 _pam_log(ctx
, LOG_NOTICE
,
791 "user '%s' OK", user
);
795 /* we don't know anything about this return value */
796 _pam_log(ctx
, LOG_ERR
,
797 "internal module error (retval = %s(%d), user = '%s')",
798 _pam_error_code_str(retval
), retval
, user
);
803 static int wbc_auth_error_to_pam_error(struct pwb_context
*ctx
,
804 struct wbcAuthErrorInfo
*e
,
806 const char *username
,
809 int ret
= PAM_AUTH_ERR
;
811 if (WBC_ERROR_IS_OK(status
)) {
812 _pam_log_debug(ctx
, LOG_DEBUG
, "request %s succeeded",
815 return pam_winbind_request_log(ctx
, ret
, username
, fn
);
819 if (e
->pam_error
!= PAM_SUCCESS
) {
820 _pam_log(ctx
, LOG_ERR
,
821 "request %s failed: %s, "
822 "PAM error: %s (%d), NTSTATUS: %s, "
823 "Error message was: %s",
825 wbcErrorString(status
),
826 _pam_error_code_str(e
->pam_error
),
831 return pam_winbind_request_log(ctx
, ret
, username
, fn
);
834 _pam_log(ctx
, LOG_ERR
, "request %s failed, but PAM error 0!", fn
);
836 ret
= PAM_SERVICE_ERR
;
837 return pam_winbind_request_log(ctx
, ret
, username
, fn
);
840 ret
= wbc_error_to_pam_error(status
);
841 return pam_winbind_request_log(ctx
, ret
, username
, fn
);
844 #if defined(HAVE_PAM_RADIO_TYPE)
845 static bool _pam_winbind_change_pwd(struct pwb_context
*ctx
)
847 struct pam_message msg
;
848 const struct pam_message
*pmsg
;
849 struct pam_response
*resp
= NULL
;
853 msg
.msg_style
= PAM_RADIO_TYPE
;
854 msg
.msg
= _("Do you want to change your password now?");
855 ret
= converse(ctx
->pamh
, 1, &pmsg
, &resp
);
857 if (ret
== PAM_SUCCESS
) {
858 _pam_log(ctx
, LOG_CRIT
, "pam_winbind: system error!\n");
862 if (ret
!= PAM_SUCCESS
) {
865 _pam_log(ctx
, LOG_CRIT
, "Received [%s] reply from application.\n", resp
->resp
);
867 if ((resp
->resp
!= NULL
) && (strcasecmp(resp
->resp
, "yes") == 0)) {
871 _pam_drop_reply(resp
, 1);
875 static bool _pam_winbind_change_pwd(struct pwb_context
*ctx
)
882 * send a password expiry message if required
884 * @param ctx PAM winbind context.
885 * @param next_change expected (calculated) next expiry date.
886 * @param already_expired pointer to a boolean to indicate if the password is
889 * @return boolean Returns true if message has been sent, false if not.
892 static bool _pam_send_password_expiry_message(struct pwb_context
*ctx
,
896 bool *already_expired
,
900 struct tm tm_now
, tm_next_change
;
904 if (already_expired
) {
905 *already_expired
= false;
912 if (next_change
<= now
) {
913 PAM_WB_REMARK_DIRECT(ctx
, "NT_STATUS_PASSWORD_EXPIRED");
914 if (already_expired
) {
915 *already_expired
= true;
920 if ((next_change
< 0) ||
921 (next_change
> now
+ warn_pwd_expire
* SECONDS_PER_DAY
)) {
925 if ((localtime_r(&now
, &tm_now
) == NULL
) ||
926 (localtime_r(&next_change
, &tm_next_change
) == NULL
)) {
930 days
= (tm_next_change
.tm_yday
+tm_next_change
.tm_year
*365) -
931 (tm_now
.tm_yday
+tm_now
.tm_year
*365);
934 ret
= _make_remark(ctx
, PAM_TEXT_INFO
,
935 _("Your password expires today.\n"));
938 * If change_pwd and already_expired is null.
939 * We are just sending a notification message.
940 * We don't expect any response in this case.
943 if (!change_pwd
&& !already_expired
) {
948 * successfully sent the warning message.
949 * Give the user a chance to change pwd.
951 if (ret
== PAM_SUCCESS
) {
953 retval
= _pam_winbind_change_pwd(ctx
);
962 if (days
> 0 && days
< warn_pwd_expire
) {
964 ret
= _make_remark_format(ctx
, PAM_TEXT_INFO
,
965 _("Your password will expire in %d %s.\n"),
966 days
, (days
> 1) ? _("days"):_("day"));
968 * If change_pwd and already_expired is null.
969 * We are just sending a notification message.
970 * We don't expect any response in this case.
973 if (!change_pwd
&& !already_expired
) {
978 * successfully sent the warning message.
979 * Give the user a chance to change pwd.
981 if (ret
== PAM_SUCCESS
) {
983 retval
= _pam_winbind_change_pwd(ctx
);
996 * Send a warning if the password expires in the near future
998 * @param ctx PAM winbind context.
999 * @param response The full authentication response structure.
1000 * @param already_expired boolean, is the pwd already expired?
1005 static void _pam_warn_password_expiry(struct pwb_context
*ctx
,
1006 const struct wbcAuthUserInfo
*info
,
1007 const struct wbcUserPasswordPolicyInfo
*policy
,
1008 int warn_pwd_expire
,
1009 bool *already_expired
,
1012 time_t now
= time(NULL
);
1013 time_t next_change
= 0;
1015 if (!info
|| !policy
) {
1019 if (already_expired
) {
1020 *already_expired
= false;
1024 *change_pwd
= false;
1027 /* accounts with WBC_ACB_PWNOEXP set never receive a warning */
1028 if (info
->acct_flags
& WBC_ACB_PWNOEXP
) {
1032 /* no point in sending a warning if this is a grace logon */
1033 if (PAM_WB_GRACE_LOGON(info
->user_flags
)) {
1037 /* check if the info3 must change timestamp has been set */
1038 next_change
= info
->pass_must_change_time
;
1040 if (_pam_send_password_expiry_message(ctx
, next_change
, now
,
1047 /* now check for the global password policy */
1048 /* good catch from Ralf Haferkamp: an expiry of "never" is translated
1050 if ((policy
->expire
== (int64_t)-1) ||
1051 (policy
->expire
== 0)) {
1055 next_change
= info
->pass_last_set_time
+ policy
->expire
;
1057 if (_pam_send_password_expiry_message(ctx
, next_change
, now
,
1064 /* no warning sent */
1067 #define IS_SID_STRING(name) (strncmp("S-", name, 2) == 0)
1070 * Append a string, making sure not to overflow and to always return a
1071 * NULL-terminated string.
1073 * @param dest Destination string buffer (must already be NULL-terminated).
1074 * @param src Source string buffer.
1075 * @param dest_buffer_size Size of dest buffer in bytes.
1077 * @return false if dest buffer is not big enough (no bytes copied), true on
1081 static bool safe_append_string(char *dest
,
1083 int dest_buffer_size
)
1086 len
= strlcat(dest
, src
, dest_buffer_size
);
1087 return (len
< dest_buffer_size
);
1091 * Convert a names into a SID string, appending it to a buffer.
1093 * @param ctx PAM winbind context.
1094 * @param user User in PAM request.
1095 * @param name Name to convert.
1096 * @param sid_list_buffer Where to append the string sid.
1097 * @param sid_list_buffer Size of sid_list_buffer (in bytes).
1099 * @return false on failure, true on success.
1101 static bool winbind_name_to_sid_string(struct pwb_context
*ctx
,
1104 char *sid_list_buffer
,
1105 int sid_list_buffer_size
)
1107 char sid_string
[WBC_SID_STRING_BUFLEN
];
1110 if (IS_SID_STRING(name
)) {
1111 strlcpy(sid_string
, name
, sizeof(sid_string
));
1114 struct wbcDomainSid sid
;
1115 enum wbcSidType type
;
1117 _pam_log_debug(ctx
, LOG_DEBUG
,
1118 "no sid given, looking up: %s\n", name
);
1120 wbc_status
= wbcCtxLookupName(ctx
->wbc_ctx
,
1125 if (!WBC_ERROR_IS_OK(wbc_status
)) {
1126 _pam_log(ctx
, LOG_INFO
,
1127 "could not lookup name: %s\n", name
);
1131 wbcSidToStringBuf(&sid
, sid_string
, sizeof(sid_string
));
1134 if (!safe_append_string(sid_list_buffer
, sid_string
,
1135 sid_list_buffer_size
)) {
1142 * Convert a list of names into a list of sids.
1144 * @param ctx PAM winbind context.
1145 * @param user User in PAM request.
1146 * @param name_list List of names or string sids, separated by commas.
1147 * @param sid_list_buffer Where to put the list of string sids.
1148 * @param sid_list_buffer Size of sid_list_buffer (in bytes).
1150 * @return false on failure, true on success.
1152 static bool winbind_name_list_to_sid_string_list(struct pwb_context
*ctx
,
1154 const char *name_list
,
1155 char *sid_list_buffer
,
1156 int sid_list_buffer_size
)
1158 bool result
= false;
1159 char *current_name
= NULL
;
1160 const char *search_location
;
1164 if (sid_list_buffer_size
> 0) {
1165 sid_list_buffer
[0] = 0;
1168 search_location
= name_list
;
1169 while ((comma
= strchr(search_location
, ',')) != NULL
) {
1170 current_name
= strndup(search_location
,
1171 comma
- search_location
);
1172 if (NULL
== current_name
) {
1176 if (!winbind_name_to_sid_string(ctx
, user
,
1179 sid_list_buffer_size
)) {
1181 * If one group name failed, we must not fail
1182 * the authentication totally, continue with
1183 * the following group names. If user belongs to
1184 * one of the valid groups, we must allow it
1188 _pam_log(ctx
, LOG_INFO
, "cannot convert group %s to sid, "
1189 "check if group %s is valid group.", current_name
,
1191 _make_remark_format(ctx
, PAM_TEXT_INFO
, _("Cannot convert group %s "
1192 "to sid, please contact your administrator to see "
1193 "if group %s is valid."), current_name
, current_name
);
1194 SAFE_FREE(current_name
);
1195 search_location
= comma
+ 1;
1199 SAFE_FREE(current_name
);
1201 if (!safe_append_string(sid_list_buffer
, ",",
1202 sid_list_buffer_size
)) {
1206 search_location
= comma
+ 1;
1209 if (!winbind_name_to_sid_string(ctx
, user
, search_location
,
1211 sid_list_buffer_size
)) {
1212 _pam_log(ctx
, LOG_INFO
, "cannot convert group %s to sid, "
1213 "check if group %s is valid group.", search_location
,
1215 _make_remark_format(ctx
, PAM_TEXT_INFO
, _("Cannot convert group %s "
1216 "to sid, please contact your administrator to see "
1217 "if group %s is valid."), search_location
, search_location
);
1219 /* If no valid groups were converted we should fail outright */
1220 if (name_list
!= NULL
&& strlen(sid_list_buffer
) == 0) {
1225 * The lookup of the last name failed..
1226 * It results in require_member_of_sid ends with ','
1227 * It is malformated parameter here, overwrite the last ','.
1229 len
= strlen(sid_list_buffer
);
1230 if ((len
!= 0) && (sid_list_buffer
[len
- 1] == ',')) {
1231 sid_list_buffer
[len
- 1] = '\0';
1238 SAFE_FREE(current_name
);
1243 * put krb5ccname variable into environment
1245 * @param ctx PAM winbind context.
1246 * @param krb5ccname env variable retrieved from winbindd.
1251 static void _pam_setup_krb5_env(struct pwb_context
*ctx
,
1252 struct wbcLogonUserInfo
*info
)
1257 const char *krb5ccname
= NULL
;
1259 if (off(ctx
->ctrl
, WINBIND_KRB5_AUTH
)) {
1267 for (i
=0; i
< info
->num_blobs
; i
++) {
1268 if (strcasecmp(info
->blobs
[i
].name
, "krb5ccname") == 0) {
1269 krb5ccname
= (const char *)info
->blobs
[i
].blob
.data
;
1274 if (!krb5ccname
|| (strlen(krb5ccname
) == 0)) {
1278 _pam_log_debug(ctx
, LOG_DEBUG
,
1279 "request returned KRB5CCNAME: %s", krb5ccname
);
1281 if (asprintf(&var
, "KRB5CCNAME=%s", krb5ccname
) == -1) {
1285 ret
= pam_putenv(ctx
->pamh
, var
);
1286 if (ret
!= PAM_SUCCESS
) {
1287 _pam_log(ctx
, LOG_ERR
,
1288 "failed to set KRB5CCNAME to %s: %s",
1289 var
, pam_strerror(ctx
->pamh
, ret
));
1295 * Copy unix username if available (further processed in PAM).
1297 * @param ctx PAM winbind context
1298 * @param user_ret A pointer that holds a pointer to a string
1299 * @param unix_username A username
1304 static void _pam_setup_unix_username(struct pwb_context
*ctx
,
1306 struct wbcLogonUserInfo
*info
)
1308 const char *unix_username
= NULL
;
1311 if (!user_ret
|| !info
) {
1315 for (i
=0; i
< info
->num_blobs
; i
++) {
1316 if (strcasecmp(info
->blobs
[i
].name
, "unix_username") == 0) {
1317 unix_username
= (const char *)info
->blobs
[i
].blob
.data
;
1322 if (!unix_username
|| !unix_username
[0]) {
1326 *user_ret
= strdup(unix_username
);
1330 * Set string into the PAM stack.
1332 * @param ctx PAM winbind context.
1333 * @param data_name Key name for pam_set_data.
1334 * @param value String value.
1339 static void _pam_set_data_string(struct pwb_context
*ctx
,
1340 const char *data_name
,
1345 if (!data_name
|| !value
|| (strlen(data_name
) == 0) ||
1346 (strlen(value
) == 0)) {
1350 ret
= pam_set_data(ctx
->pamh
, data_name
, talloc_strdup(NULL
, value
),
1351 _pam_winbind_cleanup_func
);
1352 if (ret
!= PAM_SUCCESS
) {
1353 _pam_log_debug(ctx
, LOG_DEBUG
,
1354 "Could not set data %s: %s\n",
1355 data_name
, pam_strerror(ctx
->pamh
, ret
));
1360 * Set info3 strings into the PAM stack.
1362 * @param ctx PAM winbind context.
1363 * @param data_name Key name for pam_set_data.
1364 * @param value String value.
1369 static void _pam_set_data_info3(struct pwb_context
*ctx
,
1370 const struct wbcAuthUserInfo
*info
)
1372 _pam_set_data_string(ctx
, PAM_WINBIND_HOMEDIR
,
1373 info
->home_directory
);
1374 _pam_set_data_string(ctx
, PAM_WINBIND_LOGONSCRIPT
,
1375 info
->logon_script
);
1376 _pam_set_data_string(ctx
, PAM_WINBIND_LOGONSERVER
,
1377 info
->logon_server
);
1378 _pam_set_data_string(ctx
, PAM_WINBIND_PROFILEPATH
,
1379 info
->profile_path
);
1383 * Free info3 strings in the PAM stack.
1385 * @param pamh PAM handle
1390 static void _pam_free_data_info3(pam_handle_t
*pamh
)
1392 pam_set_data(pamh
, PAM_WINBIND_HOMEDIR
, NULL
, NULL
);
1393 pam_set_data(pamh
, PAM_WINBIND_LOGONSCRIPT
, NULL
, NULL
);
1394 pam_set_data(pamh
, PAM_WINBIND_LOGONSERVER
, NULL
, NULL
);
1395 pam_set_data(pamh
, PAM_WINBIND_PROFILEPATH
, NULL
, NULL
);
1399 * Send PAM_ERROR_MSG for cached or grace logons.
1401 * @param ctx PAM winbind context.
1402 * @param username User in PAM request.
1403 * @param info3_user_flgs Info3 flags containing logon type bits.
1408 static void _pam_warn_logon_type(struct pwb_context
*ctx
,
1409 const char *username
,
1410 uint32_t info3_user_flgs
)
1412 /* inform about logon type */
1413 if (PAM_WB_GRACE_LOGON(info3_user_flgs
)) {
1415 _make_remark(ctx
, PAM_ERROR_MSG
,
1417 "Please change your password as soon you're "
1419 _pam_log_debug(ctx
, LOG_DEBUG
,
1420 "User %s logged on using grace logon\n",
1423 } else if (PAM_WB_CACHED_LOGON(info3_user_flgs
)) {
1425 _make_remark(ctx
, PAM_ERROR_MSG
,
1426 _("Domain Controller unreachable, "
1427 "using cached credentials instead. "
1428 "Network resources may be unavailable"));
1429 _pam_log_debug(ctx
, LOG_DEBUG
,
1430 "User %s logged on using cached credentials\n",
1436 * Send PAM_ERROR_MSG for krb5 errors.
1438 * @param ctx PAM winbind context.
1439 * @param username User in PAM request.
1440 * @param info3_user_flgs Info3 flags containing logon type bits.
1445 static void _pam_warn_krb5_failure(struct pwb_context
*ctx
,
1446 const char *username
,
1447 uint32_t info3_user_flgs
)
1449 if (PAM_WB_KRB5_CLOCK_SKEW(info3_user_flgs
)) {
1450 _make_remark(ctx
, PAM_ERROR_MSG
,
1451 _("Failed to establish your Kerberos Ticket cache "
1452 "due time differences\n"
1453 "with the domain controller. "
1454 "Please verify the system time.\n"));
1455 _pam_log_debug(ctx
, LOG_DEBUG
,
1456 "User %s: Clock skew when getting Krb5 TGT\n",
1461 static bool _pam_check_remark_auth_err(struct pwb_context
*ctx
,
1462 const struct wbcAuthErrorInfo
*e
,
1463 const char *nt_status_string
,
1466 const char *ntstatus
= NULL
;
1467 const char *error_string
= NULL
;
1469 if (!e
|| !pam_err
) {
1473 ntstatus
= e
->nt_string
;
1478 if (strcasecmp(ntstatus
, nt_status_string
) == 0) {
1480 error_string
= _get_ntstatus_error_string(nt_status_string
);
1482 _make_remark(ctx
, PAM_ERROR_MSG
, error_string
);
1483 *pam_err
= e
->pam_error
;
1487 if (e
->display_string
) {
1488 _make_remark(ctx
, PAM_ERROR_MSG
, _(e
->display_string
));
1489 *pam_err
= e
->pam_error
;
1493 _make_remark(ctx
, PAM_ERROR_MSG
, nt_status_string
);
1494 *pam_err
= e
->pam_error
;
1503 * Compose Password Restriction String for a PAM_ERROR_MSG conversation.
1505 * @param i The wbcUserPasswordPolicyInfo struct.
1507 * @return string (caller needs to talloc_free).
1510 static char *_pam_compose_pwd_restriction_string(struct pwb_context
*ctx
,
1511 struct wbcUserPasswordPolicyInfo
*i
)
1519 str
= talloc_asprintf(ctx
, _("Your password "));
1524 if (i
->min_length_password
> 0) {
1525 str
= talloc_asprintf_append(str
,
1526 _("must be at least %d characters; "),
1527 i
->min_length_password
);
1533 if (i
->password_history
> 0) {
1534 str
= talloc_asprintf_append(str
,
1535 _("cannot repeat any of your previous %d "
1537 i
->password_history
);
1543 if (i
->password_properties
& WBC_DOMAIN_PASSWORD_COMPLEX
) {
1544 str
= talloc_asprintf_append(str
,
1545 _("must contain capitals, numerals "
1547 "and cannot contain your account "
1554 str
= talloc_asprintf_append(str
,
1555 _("Please type a different password. "
1556 "Type a password which meets these requirements in "
1557 "both text boxes."));
1569 static int _pam_create_homedir(struct pwb_context
*ctx
,
1570 const char *dirname
,
1575 if (stat(dirname
, &sbuf
) == 0) {
1579 if (mkdir(dirname
, mode
) != 0) {
1581 _make_remark_format(ctx
, PAM_TEXT_INFO
,
1582 _("Creating directory: %s failed: %s"),
1583 dirname
, strerror(errno
));
1584 _pam_log(ctx
, LOG_ERR
, "could not create dir: %s (%s)",
1585 dirname
, strerror(errno
));
1586 return PAM_PERM_DENIED
;
1592 static int _pam_chown_homedir(struct pwb_context
*ctx
,
1593 const char *dirname
,
1597 if (chown(dirname
, uid
, gid
) != 0) {
1598 _pam_log(ctx
, LOG_ERR
, "failed to chown user homedir: %s (%s)",
1599 dirname
, strerror(errno
));
1600 return PAM_PERM_DENIED
;
1606 static int _pam_mkhomedir(struct pwb_context
*ctx
)
1608 struct passwd
*pwd
= NULL
;
1610 char *create_dir
= NULL
;
1611 char *user_dir
= NULL
;
1613 const char *username
;
1615 char *safe_ptr
= NULL
;
1618 /* Get the username */
1619 ret
= pam_get_user(ctx
->pamh
, &username
, NULL
);
1620 if ((ret
!= PAM_SUCCESS
) || (!username
)) {
1621 _pam_log_debug(ctx
, LOG_DEBUG
, "can not get the username");
1622 return PAM_SERVICE_ERR
;
1625 pwd
= getpwnam(username
);
1627 _pam_log_debug(ctx
, LOG_DEBUG
, "can not get the username");
1628 return PAM_USER_UNKNOWN
;
1630 _pam_log_debug(ctx
, LOG_DEBUG
, "homedir is: %s", pwd
->pw_dir
);
1632 ret
= _pam_create_homedir(ctx
, pwd
->pw_dir
, 0700);
1633 if (ret
== PAM_SUCCESS
) {
1634 ret
= _pam_chown_homedir(ctx
, pwd
->pw_dir
,
1639 if (ret
== PAM_SUCCESS
) {
1643 /* maybe we need to create parent dirs */
1644 create_dir
= talloc_strdup(ctx
, "/");
1649 /* find final directory */
1650 user_dir
= strrchr(pwd
->pw_dir
, '/');
1656 _pam_log(ctx
, LOG_DEBUG
, "final directory: %s", user_dir
);
1660 while ((token
= strtok_r(p
, "/", &safe_ptr
)) != NULL
) {
1666 _pam_log_debug(ctx
, LOG_DEBUG
, "token is %s", token
);
1668 create_dir
= talloc_asprintf_append(create_dir
, "%s/", token
);
1672 _pam_log_debug(ctx
, LOG_DEBUG
, "current_dir is %s", create_dir
);
1674 if (strcmp(token
, user_dir
) == 0) {
1675 _pam_log_debug(ctx
, LOG_DEBUG
, "assuming last directory: %s", token
);
1679 ret
= _pam_create_homedir(ctx
, create_dir
, mode
);
1680 if (ret
!= PAM_SUCCESS
) {
1685 return _pam_chown_homedir(ctx
, create_dir
,
1690 /* talk to winbindd */
1691 static int winbind_auth_request(struct pwb_context
*ctx
,
1696 const int warn_pwd_expire
,
1697 struct wbcAuthErrorInfo
**p_error
,
1698 struct wbcLogonUserInfo
**p_info
,
1699 struct wbcUserPasswordPolicyInfo
**p_policy
,
1700 time_t *pwd_last_set
,
1705 struct wbcLogonUserParams logon
;
1706 char membership_of
[1024];
1707 uid_t user_uid
= -1;
1708 uint32_t flags
= WBFLAG_PAM_INFO3_TEXT
|
1709 WBFLAG_PAM_GET_PWD_POLICY
;
1711 struct wbcLogonUserInfo
*info
= NULL
;
1712 struct wbcAuthUserInfo
*user_info
= NULL
;
1713 struct wbcAuthErrorInfo
*error
= NULL
;
1714 struct wbcUserPasswordPolicyInfo
*policy
= NULL
;
1716 int ret
= PAM_AUTH_ERR
;
1718 const char *codes
[] = {
1719 "NT_STATUS_PASSWORD_EXPIRED",
1720 "NT_STATUS_PASSWORD_MUST_CHANGE",
1721 "NT_STATUS_INVALID_WORKSTATION",
1722 "NT_STATUS_INVALID_LOGON_HOURS",
1723 "NT_STATUS_ACCOUNT_EXPIRED",
1724 "NT_STATUS_ACCOUNT_DISABLED",
1725 "NT_STATUS_ACCOUNT_LOCKED_OUT",
1726 "NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT",
1727 "NT_STATUS_NOLOGON_SERVER_TRUST_ACCOUNT",
1728 "NT_STATUS_NOLOGON_INTERDOMAIN_TRUST_ACCOUNT",
1729 "NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND",
1730 "NT_STATUS_NO_LOGON_SERVERS",
1731 "NT_STATUS_WRONG_PASSWORD",
1732 "NT_STATUS_ACCESS_DENIED"
1739 /* Krb5 auth always has to go against the KDC of the user's realm */
1741 if (ctx
->ctrl
& WINBIND_KRB5_AUTH
) {
1742 flags
|= WBFLAG_PAM_CONTACT_TRUSTDOM
;
1745 if (ctx
->ctrl
& (WINBIND_KRB5_AUTH
|WINBIND_CACHED_LOGIN
)) {
1746 struct passwd
*pwd
= NULL
;
1748 pwd
= getpwnam(user
);
1750 return PAM_USER_UNKNOWN
;
1752 user_uid
= pwd
->pw_uid
;
1755 if (ctx
->ctrl
& WINBIND_KRB5_AUTH
) {
1757 _pam_log_debug(ctx
, LOG_DEBUG
,
1758 "enabling krb5 login flag\n");
1760 flags
|= WBFLAG_PAM_KRB5
|
1761 WBFLAG_PAM_FALLBACK_AFTER_KRB5
;
1764 if (ctx
->ctrl
& WINBIND_CACHED_LOGIN
) {
1765 _pam_log_debug(ctx
, LOG_DEBUG
,
1766 "enabling cached login flag\n");
1767 flags
|= WBFLAG_PAM_CACHED_LOGIN
;
1772 flags
|= WBFLAG_PAM_UNIX_NAME
;
1775 if (cctype
!= NULL
) {
1776 _pam_log_debug(ctx
, LOG_DEBUG
,
1777 "enabling request for a %s krb5 ccache\n",
1781 if (member
!= NULL
) {
1783 ZERO_STRUCT(membership_of
);
1785 if (!winbind_name_list_to_sid_string_list(ctx
, user
, member
,
1787 sizeof(membership_of
))) {
1788 _pam_log_debug(ctx
, LOG_ERR
,
1789 "failed to serialize membership of sid "
1790 "\"%s\"\n", member
);
1791 return PAM_AUTH_ERR
;
1797 logon
.username
= user
;
1798 logon
.password
= pass
;
1801 wbc_status
= wbcAddNamedBlob(&logon
.num_blobs
,
1805 discard_const_p(uint8_t, cctype
),
1807 if (!WBC_ERROR_IS_OK(wbc_status
)) {
1812 wbc_status
= wbcAddNamedBlob(&logon
.num_blobs
,
1818 if (!WBC_ERROR_IS_OK(wbc_status
)) {
1822 wbc_status
= wbcAddNamedBlob(&logon
.num_blobs
,
1826 (uint8_t *)&user_uid
,
1828 if (!WBC_ERROR_IS_OK(wbc_status
)) {
1833 wbc_status
= wbcAddNamedBlob(&logon
.num_blobs
,
1837 (uint8_t *)membership_of
,
1838 sizeof(membership_of
));
1839 if (!WBC_ERROR_IS_OK(wbc_status
)) {
1844 wbc_status
= wbcCtxLogonUser(ctx
->wbc_ctx
,
1849 ret
= wbc_auth_error_to_pam_error(ctx
, error
, wbc_status
,
1850 user
, "wbcLogonUser");
1851 wbcFreeMemory(logon
.blobs
);
1854 if (info
&& info
->info
) {
1855 user_info
= info
->info
;
1858 if (pwd_last_set
&& user_info
) {
1859 *pwd_last_set
= user_info
->pass_last_set_time
;
1862 if (p_info
&& info
) {
1866 if (p_policy
&& policy
) {
1870 if (p_error
&& error
) {
1871 /* We want to process the error in the caller. */
1876 for (i
=0; i
<ARRAY_SIZE(codes
); i
++) {
1878 if (_pam_check_remark_auth_err(ctx
, error
, codes
[i
], &_ret
)) {
1884 if ((ret
== PAM_SUCCESS
) && user_info
&& policy
&& info
) {
1886 bool already_expired
= false;
1887 bool change_pwd
= false;
1889 /* warn a user if the password is about to expire soon */
1890 _pam_warn_password_expiry(ctx
, user_info
, policy
,
1895 if (already_expired
== true) {
1897 SMB_TIME_T last_set
= user_info
->pass_last_set_time
;
1899 _pam_log_debug(ctx
, LOG_DEBUG
,
1900 "Password has expired "
1901 "(Password was last set: %lld, "
1902 "the policy says it should expire here "
1903 "%lld (now it's: %ld))\n",
1904 (long long int)last_set
,
1905 (long long int)last_set
+
1909 return PAM_AUTHTOK_EXPIRED
;
1913 ret
= PAM_NEW_AUTHTOK_REQD
;
1917 /* inform about logon type */
1918 _pam_warn_logon_type(ctx
, user
, user_info
->user_flags
);
1920 /* inform about krb5 failures */
1921 _pam_warn_krb5_failure(ctx
, user
, user_info
->user_flags
);
1923 /* set some info3 info for other modules in the stack */
1924 _pam_set_data_info3(ctx
, user_info
);
1926 /* put krb5ccname into env */
1927 _pam_setup_krb5_env(ctx
, info
);
1929 /* If winbindd returned a username, return the pointer to it
1931 _pam_setup_unix_username(ctx
, user_ret
, info
);
1935 wbcFreeMemory(logon
.blobs
);
1936 if (info
&& info
->blobs
&& !p_info
) {
1937 wbcFreeMemory(info
->blobs
);
1939 if (error
&& !p_error
) {
1940 wbcFreeMemory(error
);
1942 if (info
&& !p_info
) {
1943 wbcFreeMemory(info
);
1945 if (policy
&& !p_policy
) {
1946 wbcFreeMemory(policy
);
1952 /* talk to winbindd */
1953 static int winbind_chauthtok_request(struct pwb_context
*ctx
,
1955 const char *oldpass
,
1956 const char *newpass
,
1957 time_t pwd_last_set
)
1960 struct wbcChangePasswordParams params
;
1961 struct wbcAuthErrorInfo
*error
= NULL
;
1962 struct wbcUserPasswordPolicyInfo
*policy
= NULL
;
1963 enum wbcPasswordChangeRejectReason reject_reason
= -1;
1967 const char *codes
[] = {
1968 "NT_STATUS_BACKUP_CONTROLLER",
1969 "NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND",
1970 "NT_STATUS_NO_LOGON_SERVERS",
1971 "NT_STATUS_ACCESS_DENIED",
1972 "NT_STATUS_PWD_TOO_SHORT", /* TODO: tell the min pwd length ? */
1973 "NT_STATUS_PWD_TOO_RECENT", /* TODO: tell the minage ? */
1974 "NT_STATUS_PWD_HISTORY_CONFLICT" /* TODO: tell the history length ? */
1976 int ret
= PAM_AUTH_ERR
;
1978 ZERO_STRUCT(params
);
1980 if (ctx
->ctrl
& WINBIND_KRB5_AUTH
) {
1981 flags
|= WBFLAG_PAM_KRB5
|
1982 WBFLAG_PAM_CONTACT_TRUSTDOM
;
1985 if (ctx
->ctrl
& WINBIND_CACHED_LOGIN
) {
1986 flags
|= WBFLAG_PAM_CACHED_LOGIN
;
1989 params
.account_name
= user
;
1990 params
.level
= WBC_CHANGE_PASSWORD_LEVEL_PLAIN
;
1991 params
.old_password
.plaintext
= oldpass
;
1992 params
.new_password
.plaintext
= newpass
;
1993 params
.flags
= flags
;
1995 wbc_status
= wbcCtxChangeUserPasswordEx(ctx
->wbc_ctx
,
2000 ret
= wbc_auth_error_to_pam_error(ctx
, error
, wbc_status
,
2001 user
, "wbcChangeUserPasswordEx");
2003 if (WBC_ERROR_IS_OK(wbc_status
)) {
2004 _pam_log(ctx
, LOG_NOTICE
,
2005 "user '%s' password changed", user
);
2010 wbcFreeMemory(policy
);
2014 for (i
=0; i
<ARRAY_SIZE(codes
); i
++) {
2016 if (_pam_check_remark_auth_err(ctx
, error
, codes
[i
], &_ret
)) {
2022 if (!strcasecmp(error
->nt_string
,
2023 "NT_STATUS_PASSWORD_RESTRICTION")) {
2025 char *pwd_restriction_string
= NULL
;
2026 SMB_TIME_T min_pwd_age
= 0;
2029 min_pwd_age
= policy
->min_passwordage
;
2032 /* FIXME: avoid to send multiple PAM messages after another */
2033 switch ((int)reject_reason
) {
2036 case WBC_PWD_CHANGE_NO_ERROR
:
2037 if ((min_pwd_age
> 0) &&
2038 (pwd_last_set
+ min_pwd_age
> time(NULL
))) {
2039 PAM_WB_REMARK_DIRECT(ctx
,
2040 "NT_STATUS_PWD_TOO_RECENT");
2043 case WBC_PWD_CHANGE_PASSWORD_TOO_SHORT
:
2044 PAM_WB_REMARK_DIRECT(ctx
,
2045 "NT_STATUS_PWD_TOO_SHORT");
2047 case WBC_PWD_CHANGE_PWD_IN_HISTORY
:
2048 PAM_WB_REMARK_DIRECT(ctx
,
2049 "NT_STATUS_PWD_HISTORY_CONFLICT");
2051 case WBC_PWD_CHANGE_NOT_COMPLEX
:
2052 _make_remark(ctx
, PAM_ERROR_MSG
,
2053 _("Password does not meet "
2054 "complexity requirements"));
2057 _pam_log_debug(ctx
, LOG_DEBUG
,
2058 "unknown password change "
2059 "reject reason: %d",
2064 pwd_restriction_string
=
2065 _pam_compose_pwd_restriction_string(ctx
, policy
);
2066 if (pwd_restriction_string
) {
2067 _make_remark(ctx
, PAM_ERROR_MSG
,
2068 pwd_restriction_string
);
2069 TALLOC_FREE(pwd_restriction_string
);
2073 wbcFreeMemory(error
);
2074 wbcFreeMemory(policy
);
2080 * Checks if a user has an account
2083 * 1 = User not found
2087 static int valid_user(struct pwb_context
*ctx
,
2090 /* check not only if the user is available over NSS calls, also make
2091 * sure it's really a winbind user, this is important when stacking PAM
2092 * modules in the 'account' or 'password' facility. */
2095 struct passwd
*pwd
= NULL
;
2096 struct passwd
*wb_pwd
= NULL
;
2098 pwd
= getpwnam(user
);
2103 wbc_status
= wbcCtxGetpwnam(ctx
->wbc_ctx
, user
, &wb_pwd
);
2104 wbcFreeMemory(wb_pwd
);
2105 if (!WBC_ERROR_IS_OK(wbc_status
)) {
2106 _pam_log(ctx
, LOG_DEBUG
, "valid_user: wbcGetpwnam gave %s\n",
2107 wbcErrorString(wbc_status
));
2110 switch (wbc_status
) {
2111 case WBC_ERR_UNKNOWN_USER
:
2112 /* match other insane libwbclient return codes */
2113 case WBC_ERR_WINBIND_NOT_AVAILABLE
:
2114 case WBC_ERR_DOMAIN_NOT_FOUND
:
2116 case WBC_ERR_SUCCESS
:
2124 static char *_pam_delete(register char *xx
)
2132 * obtain a password from the user
2135 static int _winbind_read_password(struct pwb_context
*ctx
,
2137 const char *comment
,
2138 const char *prompt1
,
2139 const char *prompt2
,
2147 _pam_log(ctx
, LOG_DEBUG
, "getting password (0x%08x)", ctrl
);
2150 * make sure nothing inappropriate gets returned
2153 *pass
= token
= NULL
;
2156 * which authentication token are we getting?
2159 if (on(WINBIND__OLD_PASSWORD
, ctrl
)) {
2160 authtok_flag
= PAM_OLDAUTHTOK
;
2162 authtok_flag
= PAM_AUTHTOK
;
2166 * should we obtain the password from a PAM item ?
2169 if (on(WINBIND_TRY_FIRST_PASS_ARG
, ctrl
) ||
2170 on(WINBIND_USE_FIRST_PASS_ARG
, ctrl
)) {
2171 retval
= pam_get_item(ctx
->pamh
,
2173 (const void **) &item
);
2174 if (retval
!= PAM_SUCCESS
) {
2176 _pam_log(ctx
, LOG_ALERT
,
2177 "pam_get_item returned error "
2178 "to unix-read-password");
2180 } else if (item
!= NULL
) { /* we have a password! */
2183 _pam_log(ctx
, LOG_DEBUG
,
2184 "pam_get_item returned a password");
2186 } else if (on(WINBIND_USE_FIRST_PASS_ARG
, ctrl
)) {
2187 return PAM_AUTHTOK_RECOVER_ERR
; /* didn't work */
2188 } else if (on(WINBIND_USE_AUTHTOK_ARG
, ctrl
)
2189 && off(WINBIND__OLD_PASSWORD
, ctrl
)) {
2190 return PAM_AUTHTOK_RECOVER_ERR
;
2194 * getting here implies we will have to get the password from the
2199 struct pam_message msg
[3];
2200 const struct pam_message
*pmsg
[3];
2201 struct pam_response
*resp
;
2204 /* prepare to converse */
2206 if (comment
!= NULL
&& off(ctrl
, WINBIND_SILENT
)) {
2208 msg
[0].msg_style
= PAM_TEXT_INFO
;
2209 msg
[0].msg
= discard_const_p(char, comment
);
2216 msg
[i
].msg_style
= PAM_PROMPT_ECHO_OFF
;
2217 msg
[i
++].msg
= discard_const_p(char, prompt1
);
2220 if (prompt2
!= NULL
) {
2222 msg
[i
].msg_style
= PAM_PROMPT_ECHO_OFF
;
2223 msg
[i
++].msg
= discard_const_p(char, prompt2
);
2226 /* so call the conversation expecting i responses */
2228 retval
= converse(ctx
->pamh
, i
, pmsg
, &resp
);
2230 if (retval
== PAM_SUCCESS
) {
2231 retval
= PAM_AUTHTOK_RECOVER_ERR
;
2235 if (retval
!= PAM_SUCCESS
) {
2236 _pam_drop_reply(resp
, i
);
2240 /* interpret the response */
2242 token
= x_strdup(resp
[i
- replies
].resp
);
2244 _pam_log(ctx
, LOG_NOTICE
,
2245 "could not recover "
2246 "authentication token");
2247 retval
= PAM_AUTHTOK_RECOVER_ERR
;
2252 /* verify that password entered correctly */
2253 if (!resp
[i
- 1].resp
||
2254 strcmp(token
, resp
[i
- 1].resp
)) {
2255 _pam_delete(token
); /* mistyped */
2256 retval
= PAM_AUTHTOK_RECOVER_ERR
;
2257 _make_remark(ctx
, PAM_ERROR_MSG
,
2263 * tidy up the conversation (resp_retcode) is ignored
2264 * -- what is it for anyway? AGM
2266 _pam_drop_reply(resp
, i
);
2270 if (retval
!= PAM_SUCCESS
) {
2271 _pam_log_debug(ctx
, LOG_DEBUG
,
2272 "unable to obtain a password");
2275 /* 'token' is the entered password */
2277 /* we store this password as an item */
2279 retval
= pam_set_item(ctx
->pamh
, authtok_flag
, token
);
2280 _pam_delete(token
); /* clean it up */
2281 if (retval
!= PAM_SUCCESS
||
2282 (retval
= pam_get_item(ctx
->pamh
, authtok_flag
, (const void **) &item
)) != PAM_SUCCESS
) {
2284 _pam_log(ctx
, LOG_CRIT
, "error manipulating password");
2290 item
= NULL
; /* break link to password */
2295 static const char *get_conf_item_string(struct pwb_context
*ctx
,
2300 const char *parm_opt
= NULL
;
2302 if (!(ctx
->ctrl
& config_flag
)) {
2306 /* let the pam opt take precedence over the pam_winbind.conf option */
2307 for (i
=0; i
<ctx
->argc
; i
++) {
2309 if ((strncmp(ctx
->argv
[i
], item
, strlen(item
)) == 0)) {
2312 if ((p
= strchr(ctx
->argv
[i
], '=')) == NULL
) {
2313 _pam_log(ctx
, LOG_INFO
,
2314 "no \"=\" delimiter for \"%s\" found\n",
2318 _pam_log_debug(ctx
, LOG_INFO
,
2319 "PAM config: %s '%s'\n", item
, p
+1);
2327 key
= talloc_asprintf(ctx
, "global:%s", item
);
2332 parm_opt
= tiniparser_getstring_nonempty(ctx
->dict
, key
, NULL
);
2335 _pam_log_debug(ctx
, LOG_INFO
, "CONFIG file: %s '%s'\n",
2342 static int get_config_item_int(struct pwb_context
*ctx
,
2346 int i
, parm_opt
= -1;
2348 if (!(ctx
->ctrl
& config_flag
)) {
2352 /* let the pam opt take precedence over the pam_winbind.conf option */
2353 for (i
= 0; i
< ctx
->argc
; i
++) {
2355 if ((strncmp(ctx
->argv
[i
], item
, strlen(item
)) == 0)) {
2358 if ((p
= strchr(ctx
->argv
[i
], '=')) == NULL
) {
2359 _pam_log(ctx
, LOG_INFO
,
2360 "no \"=\" delimiter for \"%s\" found\n",
2364 parm_opt
= atoi(p
+ 1);
2365 _pam_log_debug(ctx
, LOG_INFO
,
2366 "PAM config: %s '%d'\n",
2375 key
= talloc_asprintf(ctx
, "global:%s", item
);
2380 parm_opt
= tiniparser_getint(ctx
->dict
, key
, -1);
2383 _pam_log_debug(ctx
, LOG_INFO
,
2384 "CONFIG file: %s '%d'\n",
2391 static const char *get_krb5_cc_type_from_config(struct pwb_context
*ctx
)
2393 return get_conf_item_string(ctx
, "krb5_ccache_type",
2394 WINBIND_KRB5_CCACHE_TYPE
);
2397 static const char *get_member_from_config(struct pwb_context
*ctx
)
2399 const char *ret
= NULL
;
2400 ret
= get_conf_item_string(ctx
, "require_membership_of",
2401 WINBIND_REQUIRED_MEMBERSHIP
);
2405 return get_conf_item_string(ctx
, "require-membership-of",
2406 WINBIND_REQUIRED_MEMBERSHIP
);
2409 static int get_warn_pwd_expire_from_config(struct pwb_context
*ctx
)
2412 ret
= get_config_item_int(ctx
, "warn_pwd_expire",
2413 WINBIND_WARN_PWD_EXPIRE
);
2414 /* no or broken setting */
2416 return DEFAULT_DAYS_TO_WARN_BEFORE_PWD_EXPIRES
;
2422 * Retrieve the winbind separator.
2424 * @param ctx PAM winbind context.
2426 * @return string separator character. NULL on failure.
2429 static char winbind_get_separator(struct pwb_context
*ctx
)
2432 static struct wbcInterfaceDetails
*details
= NULL
;
2434 wbc_status
= wbcCtxInterfaceDetails(ctx
->wbc_ctx
, &details
);
2435 if (!WBC_ERROR_IS_OK(wbc_status
)) {
2436 _pam_log(ctx
, LOG_ERR
,
2437 "Could not retrieve winbind interface details: %s",
2438 wbcErrorString(wbc_status
));
2446 return details
->winbind_separator
;
2451 * Convert a upn to a name.
2453 * @param ctx PAM winbind context.
2454 * @param upn User UPN to be translated.
2456 * @return converted name. NULL pointer on failure. Caller needs to free.
2459 static char* winbind_upn_to_username(struct pwb_context
*ctx
,
2463 wbcErr wbc_status
= WBC_ERR_UNKNOWN_FAILURE
;
2464 struct wbcDomainSid sid
;
2465 enum wbcSidType type
;
2466 char *domain
= NULL
;
2471 /* This cannot work when the winbind separator = @ */
2473 sep
= winbind_get_separator(ctx
);
2474 if (!sep
|| sep
== '@') {
2478 name
= talloc_strdup(ctx
, upn
);
2483 p
= strchr(name
, '@');
2491 /* Convert the UPN to a SID */
2493 wbc_status
= wbcCtxLookupName(ctx
->wbc_ctx
, domain
, name
, &sid
, &type
);
2494 if (!WBC_ERROR_IS_OK(wbc_status
)) {
2498 /* Convert the the SID back to the sAMAccountName */
2500 wbc_status
= wbcCtxLookupSid(ctx
->wbc_ctx
, &sid
, &domain
, &name
, &type
);
2501 if (!WBC_ERROR_IS_OK(wbc_status
)) {
2505 result
= talloc_asprintf(ctx
, "%s%c%s", domain
, sep
, name
);
2506 wbcFreeMemory(domain
);
2507 wbcFreeMemory(name
);
2511 static int _pam_delete_cred(pam_handle_t
*pamh
, int flags
,
2512 int argc
, enum pam_winbind_request_type type
,
2515 int retval
= PAM_SUCCESS
;
2516 struct pwb_context
*ctx
= NULL
;
2517 struct wbcLogoffUserParams logoff
;
2518 struct wbcAuthErrorInfo
*error
= NULL
;
2520 wbcErr wbc_status
= WBC_ERR_SUCCESS
;
2522 ZERO_STRUCT(logoff
);
2524 retval
= _pam_winbind_init_context(pamh
, flags
, argc
, argv
, type
, &ctx
);
2525 if (retval
!= PAM_SUCCESS
) {
2529 _PAM_LOG_FUNCTION_ENTER("_pam_delete_cred", ctx
);
2531 if (ctx
->ctrl
& WINBIND_KRB5_AUTH
) {
2533 /* destroy the ccache here */
2535 uint32_t wbc_flags
= 0;
2536 const char *ccname
= NULL
;
2537 struct passwd
*pwd
= NULL
;
2539 retval
= pam_get_user(pamh
, &user
, _("Username: "));
2540 if (retval
!= PAM_SUCCESS
) {
2541 _pam_log(ctx
, LOG_ERR
,
2542 "could not identify user");
2547 _pam_log(ctx
, LOG_ERR
,
2548 "username was NULL!");
2549 retval
= PAM_USER_UNKNOWN
;
2553 _pam_log_debug(ctx
, LOG_DEBUG
,
2554 "username [%s] obtained", user
);
2556 ccname
= pam_getenv(pamh
, "KRB5CCNAME");
2557 if (ccname
== NULL
) {
2558 _pam_log_debug(ctx
, LOG_DEBUG
,
2559 "user has no KRB5CCNAME environment");
2562 pwd
= getpwnam(user
);
2564 retval
= PAM_USER_UNKNOWN
;
2568 wbc_flags
= WBFLAG_PAM_KRB5
|
2569 WBFLAG_PAM_CONTACT_TRUSTDOM
;
2571 logoff
.username
= user
;
2574 wbc_status
= wbcAddNamedBlob(&logoff
.num_blobs
,
2578 discard_const_p(uint8_t, ccname
),
2580 if (!WBC_ERROR_IS_OK(wbc_status
)) {
2585 wbc_status
= wbcAddNamedBlob(&logoff
.num_blobs
,
2589 (uint8_t *)&wbc_flags
,
2591 if (!WBC_ERROR_IS_OK(wbc_status
)) {
2595 wbc_status
= wbcAddNamedBlob(&logoff
.num_blobs
,
2599 (uint8_t *)&pwd
->pw_uid
,
2600 sizeof(pwd
->pw_uid
));
2601 if (!WBC_ERROR_IS_OK(wbc_status
)) {
2605 wbc_status
= wbcCtxLogoffUserEx(ctx
->wbc_ctx
, &logoff
, &error
);
2606 retval
= wbc_auth_error_to_pam_error(ctx
, error
, wbc_status
,
2607 user
, "wbcLogoffUser");
2608 wbcFreeMemory(error
);
2609 wbcFreeMemory(logoff
.blobs
);
2610 logoff
.blobs
= NULL
;
2612 if (!WBC_ERROR_IS_OK(wbc_status
)) {
2613 _pam_log(ctx
, LOG_INFO
,
2614 "failed to logoff user %s: %s\n",
2615 user
, wbcErrorString(wbc_status
));
2621 wbcFreeMemory(logoff
.blobs
);
2624 if (!WBC_ERROR_IS_OK(wbc_status
)) {
2625 retval
= wbc_auth_error_to_pam_error(ctx
, error
, wbc_status
,
2626 user
, "wbcLogoffUser");
2630 * Delete the krb5 ccname variable from the PAM environment
2631 * if it was set by winbind.
2633 if ((ctx
->ctrl
& WINBIND_KRB5_AUTH
) && pam_getenv(pamh
, "KRB5CCNAME")) {
2634 pam_putenv(pamh
, "KRB5CCNAME");
2637 _PAM_LOG_FUNCTION_LEAVE("_pam_delete_cred", ctx
, retval
);
2645 int pam_sm_authenticate(pam_handle_t
*pamh
, int flags
,
2646 int argc
, const char **argv
)
2648 const char *username
;
2649 const char *password
;
2650 const char *member
= NULL
;
2651 const char *cctype
= NULL
;
2652 int warn_pwd_expire
;
2653 int retval
= PAM_AUTH_ERR
;
2654 char *username_ret
= NULL
;
2655 char *new_authtok_required
= NULL
;
2656 char *real_username
= NULL
;
2657 struct pwb_context
*ctx
= NULL
;
2659 retval
= _pam_winbind_init_context(pamh
, flags
, argc
, argv
,
2660 PAM_WINBIND_AUTHENTICATE
, &ctx
);
2661 if (retval
!= PAM_SUCCESS
) {
2665 _PAM_LOG_FUNCTION_ENTER("pam_sm_authenticate", ctx
);
2667 /* Get the username */
2668 retval
= pam_get_user(pamh
, &username
, NULL
);
2669 if ((retval
!= PAM_SUCCESS
) || (!username
)) {
2670 _pam_log_debug(ctx
, LOG_DEBUG
,
2671 "can not get the username");
2672 retval
= PAM_SERVICE_ERR
;
2678 /* Decode the user name since AIX does not support logn user
2679 names by default. The name is encoded as _#uid. */
2681 if (username
[0] == '_') {
2682 uid_t id
= atoi(&username
[1]);
2683 struct passwd
*pw
= NULL
;
2685 if ((id
!=0) && ((pw
= getpwuid(id
)) != NULL
)) {
2686 real_username
= strdup(pw
->pw_name
);
2691 if (!real_username
) {
2692 /* Just making a copy of the username we got from PAM */
2693 if ((real_username
= strdup(username
)) == NULL
) {
2694 _pam_log_debug(ctx
, LOG_DEBUG
,
2695 "memory allocation failure when copying "
2697 retval
= PAM_SERVICE_ERR
;
2702 /* Maybe this was a UPN */
2704 if (strchr(real_username
, '@') != NULL
) {
2705 char *samaccountname
= NULL
;
2707 samaccountname
= winbind_upn_to_username(ctx
,
2709 if (samaccountname
) {
2710 free(real_username
);
2711 real_username
= strdup(samaccountname
);
2715 retval
= _winbind_read_password(ctx
, ctx
->ctrl
, NULL
,
2716 _("Password: "), NULL
,
2719 if (retval
!= PAM_SUCCESS
) {
2720 _pam_log(ctx
, LOG_ERR
,
2721 "Could not retrieve user's password");
2722 retval
= PAM_AUTHTOK_ERR
;
2726 /* Let's not give too much away in the log file */
2728 #ifdef DEBUG_PASSWORD
2729 _pam_log_debug(ctx
, LOG_INFO
,
2730 "Verify user '%s' with password '%s'",
2731 real_username
, password
);
2733 _pam_log_debug(ctx
, LOG_INFO
,
2734 "Verify user '%s'", real_username
);
2737 member
= get_member_from_config(ctx
);
2738 cctype
= get_krb5_cc_type_from_config(ctx
);
2739 warn_pwd_expire
= get_warn_pwd_expire_from_config(ctx
);
2741 /* Now use the username to look up password */
2742 retval
= winbind_auth_request(ctx
, real_username
, password
,
2743 member
, cctype
, warn_pwd_expire
,
2745 NULL
, &username_ret
);
2747 if (retval
== PAM_NEW_AUTHTOK_REQD
||
2748 retval
== PAM_AUTHTOK_EXPIRED
) {
2750 char *new_authtok_required_during_auth
= NULL
;
2752 new_authtok_required
= talloc_asprintf(NULL
, "%d", retval
);
2753 if (!new_authtok_required
) {
2754 retval
= PAM_BUF_ERR
;
2758 pam_set_data(pamh
, PAM_WINBIND_NEW_AUTHTOK_REQD
,
2759 new_authtok_required
,
2760 _pam_winbind_cleanup_func
);
2762 retval
= PAM_SUCCESS
;
2764 new_authtok_required_during_auth
= talloc_asprintf(NULL
, "%d", true);
2765 if (!new_authtok_required_during_auth
) {
2766 retval
= PAM_BUF_ERR
;
2770 pam_set_data(pamh
, PAM_WINBIND_NEW_AUTHTOK_REQD_DURING_AUTH
,
2771 new_authtok_required_during_auth
,
2772 _pam_winbind_cleanup_func
);
2779 pam_set_item (pamh
, PAM_USER
, username_ret
);
2780 _pam_log_debug(ctx
, LOG_INFO
,
2781 "Returned user was '%s'", username_ret
);
2785 if (real_username
) {
2786 free(real_username
);
2789 if (!new_authtok_required
) {
2790 pam_set_data(pamh
, PAM_WINBIND_NEW_AUTHTOK_REQD
, NULL
, NULL
);
2793 if (retval
!= PAM_SUCCESS
) {
2794 _pam_free_data_info3(pamh
);
2797 _PAM_LOG_FUNCTION_LEAVE("pam_sm_authenticate", ctx
, retval
);
2805 int pam_sm_setcred(pam_handle_t
*pamh
, int flags
,
2806 int argc
, const char **argv
)
2808 int ret
= PAM_SYSTEM_ERR
;
2809 struct pwb_context
*ctx
= NULL
;
2811 ret
= _pam_winbind_init_context(pamh
, flags
, argc
, argv
,
2812 PAM_WINBIND_SETCRED
, &ctx
);
2813 if (ret
!= PAM_SUCCESS
) {
2817 _PAM_LOG_FUNCTION_ENTER("pam_sm_setcred", ctx
);
2819 switch (flags
& ~PAM_SILENT
) {
2821 case PAM_DELETE_CRED
:
2822 ret
= _pam_delete_cred(pamh
, flags
, argc
,
2823 PAM_WINBIND_SETCRED
, argv
);
2825 case PAM_REFRESH_CRED
:
2826 _pam_log_debug(ctx
, LOG_WARNING
,
2827 "PAM_REFRESH_CRED not implemented");
2830 case PAM_REINITIALIZE_CRED
:
2831 _pam_log_debug(ctx
, LOG_WARNING
,
2832 "PAM_REINITIALIZE_CRED not implemented");
2835 case PAM_ESTABLISH_CRED
:
2836 _pam_log_debug(ctx
, LOG_WARNING
,
2837 "PAM_ESTABLISH_CRED not implemented");
2841 ret
= PAM_SYSTEM_ERR
;
2845 _PAM_LOG_FUNCTION_LEAVE("pam_sm_setcred", ctx
, ret
);
2853 * Account management. We want to verify that the account exists
2854 * before returning PAM_SUCCESS
2857 int pam_sm_acct_mgmt(pam_handle_t
*pamh
, int flags
,
2858 int argc
, const char **argv
)
2860 const char *username
;
2861 int ret
= PAM_USER_UNKNOWN
;
2862 const char *tmp
= NULL
;
2863 struct pwb_context
*ctx
= NULL
;
2865 ret
= _pam_winbind_init_context(pamh
, flags
, argc
, argv
,
2866 PAM_WINBIND_ACCT_MGMT
, &ctx
);
2867 if (ret
!= PAM_SUCCESS
) {
2871 _PAM_LOG_FUNCTION_ENTER("pam_sm_acct_mgmt", ctx
);
2874 /* Get the username */
2875 ret
= pam_get_user(pamh
, &username
, NULL
);
2876 if ((ret
!= PAM_SUCCESS
) || (!username
)) {
2877 _pam_log_debug(ctx
, LOG_DEBUG
,
2878 "can not get the username");
2879 ret
= PAM_SERVICE_ERR
;
2883 /* Verify the username */
2884 ret
= valid_user(ctx
, username
);
2887 /* some sort of system error. The log was already printed */
2888 ret
= PAM_SERVICE_ERR
;
2891 /* the user does not exist */
2892 _pam_log_debug(ctx
, LOG_NOTICE
, "user '%s' not found",
2894 if (ctx
->ctrl
& WINBIND_UNKNOWN_OK_ARG
) {
2898 ret
= PAM_USER_UNKNOWN
;
2901 pam_get_data(pamh
, PAM_WINBIND_NEW_AUTHTOK_REQD
,
2902 (const void **)&tmp
);
2906 case PAM_AUTHTOK_EXPIRED
:
2907 /* fall through, since new token is required in this case */
2908 case PAM_NEW_AUTHTOK_REQD
:
2909 _pam_log(ctx
, LOG_WARNING
,
2910 "pam_sm_acct_mgmt success but %s is set",
2911 PAM_WINBIND_NEW_AUTHTOK_REQD
);
2912 _pam_log(ctx
, LOG_NOTICE
,
2913 "user '%s' needs new password",
2915 /* PAM_AUTHTOKEN_REQD does not exist, but is documented in the manpage */
2916 ret
= PAM_NEW_AUTHTOK_REQD
;
2919 _pam_log(ctx
, LOG_WARNING
,
2920 "pam_sm_acct_mgmt success");
2921 _pam_log(ctx
, LOG_NOTICE
,
2922 "user '%s' granted access", username
);
2928 /* Otherwise, the authentication looked good */
2929 _pam_log(ctx
, LOG_NOTICE
,
2930 "user '%s' granted access", username
);
2934 /* we don't know anything about this return value */
2935 _pam_log(ctx
, LOG_ERR
,
2936 "internal module error (ret = %d, user = '%s')",
2938 ret
= PAM_SERVICE_ERR
;
2942 /* should not be reached */
2947 _PAM_LOG_FUNCTION_LEAVE("pam_sm_acct_mgmt", ctx
, ret
);
2955 int pam_sm_open_session(pam_handle_t
*pamh
, int flags
,
2956 int argc
, const char **argv
)
2958 int ret
= PAM_SUCCESS
;
2959 struct pwb_context
*ctx
= NULL
;
2961 ret
= _pam_winbind_init_context(pamh
, flags
, argc
, argv
,
2962 PAM_WINBIND_OPEN_SESSION
, &ctx
);
2963 if (ret
!= PAM_SUCCESS
) {
2967 _PAM_LOG_FUNCTION_ENTER("pam_sm_open_session", ctx
);
2969 if (ctx
->ctrl
& WINBIND_MKHOMEDIR
) {
2970 /* check and create homedir */
2971 ret
= _pam_mkhomedir(ctx
);
2974 _PAM_LOG_FUNCTION_LEAVE("pam_sm_open_session", ctx
, ret
);
2982 int pam_sm_close_session(pam_handle_t
*pamh
, int flags
,
2983 int argc
, const char **argv
)
2985 int ret
= PAM_SUCCESS
;
2986 struct pwb_context
*ctx
= NULL
;
2988 ret
= _pam_winbind_init_context(pamh
, flags
, argc
, argv
,
2989 PAM_WINBIND_CLOSE_SESSION
, &ctx
);
2990 if (ret
!= PAM_SUCCESS
) {
2994 _PAM_LOG_FUNCTION_ENTER("pam_sm_close_session", ctx
);
2996 _PAM_LOG_FUNCTION_LEAVE("pam_sm_close_session", ctx
, ret
);
3004 * evaluate whether we need to re-authenticate with kerberos after a
3007 * @param ctx PAM winbind context.
3008 * @param user The username
3010 * @return boolean Returns true if required, false if not.
3013 static bool _pam_require_krb5_auth_after_chauthtok(struct pwb_context
*ctx
,
3017 /* Make sure that we only do this if a) the chauthtok got initiated
3018 * during a logon attempt (authenticate->acct_mgmt->chauthtok) b) any
3019 * later password change via the "passwd" command if done by the user
3021 * NB. If we login from gdm or xdm and the password expires,
3022 * we change the password, but there is no memory cache.
3023 * Thus, even for passthrough login, we should do the
3024 * authentication again to update memory cache.
3028 char *new_authtok_reqd_during_auth
= NULL
;
3029 struct passwd
*pwd
= NULL
;
3031 pam_get_data(ctx
->pamh
, PAM_WINBIND_NEW_AUTHTOK_REQD_DURING_AUTH
,
3032 (const void **) &new_authtok_reqd_during_auth
);
3033 pam_set_data(ctx
->pamh
, PAM_WINBIND_NEW_AUTHTOK_REQD_DURING_AUTH
,
3036 if (new_authtok_reqd_during_auth
) {
3040 pwd
= getpwnam(user
);
3045 if (getuid() == pwd
->pw_uid
) {
3054 int pam_sm_chauthtok(pam_handle_t
* pamh
, int flags
,
3055 int argc
, const char **argv
)
3059 bool cached_login
= false;
3061 /* <DO NOT free() THESE> */
3063 const char *pass_old
;
3064 const char *pass_new
;
3065 /* </DO NOT free() THESE> */
3070 char *username_ret
= NULL
;
3071 struct wbcAuthErrorInfo
*error
= NULL
;
3072 struct pwb_context
*ctx
= NULL
;
3074 ret
= _pam_winbind_init_context(pamh
, flags
, argc
, argv
,
3075 PAM_WINBIND_CHAUTHTOK
, &ctx
);
3076 if (ret
!= PAM_SUCCESS
) {
3080 _PAM_LOG_FUNCTION_ENTER("pam_sm_chauthtok", ctx
);
3082 cached_login
= (ctx
->ctrl
& WINBIND_CACHED_LOGIN
);
3084 /* clearing offline bit for auth */
3085 ctx
->ctrl
&= ~WINBIND_CACHED_LOGIN
;
3088 * First get the name of a user
3090 ret
= pam_get_user(pamh
, &user
, _("Username: "));
3091 if (ret
!= PAM_SUCCESS
) {
3092 _pam_log(ctx
, LOG_ERR
,
3093 "password - could not identify user");
3098 _pam_log(ctx
, LOG_ERR
, "username was NULL!");
3099 ret
= PAM_USER_UNKNOWN
;
3103 _pam_log_debug(ctx
, LOG_DEBUG
, "username [%s] obtained", user
);
3105 /* check if this is really a user in winbindd, not only in NSS */
3106 ret
= valid_user(ctx
, user
);
3109 ret
= PAM_USER_UNKNOWN
;
3112 ret
= PAM_SYSTEM_ERR
;
3119 * obtain and verify the current password (OLDAUTHTOK) for
3123 if (flags
& PAM_PRELIM_CHECK
) {
3124 time_t pwdlastset_prelim
= 0;
3126 /* instruct user what is happening */
3128 #define greeting _("Changing password for")
3129 Announce
= talloc_asprintf(ctx
, "%s %s", greeting
, user
);
3131 _pam_log(ctx
, LOG_CRIT
,
3132 "password - out of memory");
3138 lctrl
= ctx
->ctrl
| WINBIND__OLD_PASSWORD
;
3139 ret
= _winbind_read_password(ctx
, lctrl
,
3141 _("(current) NT password: "),
3143 (const char **) &pass_old
);
3144 TALLOC_FREE(Announce
);
3145 if (ret
!= PAM_SUCCESS
) {
3146 _pam_log(ctx
, LOG_NOTICE
,
3147 "password - (old) token not obtained");
3151 /* verify that this is the password for this user */
3153 ret
= winbind_auth_request(ctx
, user
, pass_old
,
3156 &pwdlastset_prelim
, NULL
);
3158 if (ret
!= PAM_ACCT_EXPIRED
&&
3159 ret
!= PAM_AUTHTOK_EXPIRED
&&
3160 ret
!= PAM_NEW_AUTHTOK_REQD
&&
3161 ret
!= PAM_SUCCESS
) {
3166 pam_set_data(pamh
, PAM_WINBIND_PWD_LAST_SET
,
3167 (void *)pwdlastset_prelim
, NULL
);
3169 ret
= pam_set_item(pamh
, PAM_OLDAUTHTOK
,
3170 (const void *) pass_old
);
3172 if (ret
!= PAM_SUCCESS
) {
3173 _pam_log(ctx
, LOG_CRIT
,
3174 "failed to set PAM_OLDAUTHTOK");
3176 } else if (flags
& PAM_UPDATE_AUTHTOK
) {
3178 time_t pwdlastset_update
= 0;
3181 * obtain the proposed password
3185 * get the old token back.
3188 ret
= pam_get_item(pamh
, PAM_OLDAUTHTOK
, (const void **) &pass_old
);
3190 if (ret
!= PAM_SUCCESS
) {
3191 _pam_log(ctx
, LOG_NOTICE
,
3192 "user not authenticated");
3196 lctrl
= ctx
->ctrl
& ~WINBIND_TRY_FIRST_PASS_ARG
;
3198 if (on(WINBIND_USE_AUTHTOK_ARG
, lctrl
)) {
3199 lctrl
|= WINBIND_USE_FIRST_PASS_ARG
;
3202 ret
= PAM_AUTHTOK_ERR
;
3203 while ((ret
!= PAM_SUCCESS
) && (retry
++ < MAX_PASSWD_TRIES
)) {
3205 * use_authtok is to force the use of a previously entered
3206 * password -- needed for pluggable password strength checking
3209 ret
= _winbind_read_password(ctx
, lctrl
,
3211 _("Enter new NT password: "),
3212 _("Retype new NT password: "),
3213 (const char **)&pass_new
);
3215 if (ret
!= PAM_SUCCESS
) {
3216 _pam_log_debug(ctx
, LOG_ALERT
,
3218 "new password not obtained");
3219 pass_old
= NULL
;/* tidy up */
3224 * At this point we know who the user is and what they
3225 * propose as their new password. Verify that the new
3226 * password is acceptable.
3229 if (pass_new
[0] == '\0') {/* "\0" password = NULL */
3235 * By reaching here we have approved the passwords and must now
3236 * rebuild the password database file.
3238 pam_get_data(pamh
, PAM_WINBIND_PWD_LAST_SET
,
3239 (const void **) &pwdlastset_update
);
3242 * if cached creds were enabled, make sure to set the
3243 * WINBIND_CACHED_LOGIN bit here in order to have winbindd
3244 * update the cached creds storage - gd
3247 ctx
->ctrl
|= WINBIND_CACHED_LOGIN
;
3250 ret
= winbind_chauthtok_request(ctx
, user
, pass_old
,
3251 pass_new
, pwdlastset_update
);
3252 if (ret
!= PAM_SUCCESS
) {
3253 pass_old
= pass_new
= NULL
;
3257 if (_pam_require_krb5_auth_after_chauthtok(ctx
, user
)) {
3259 const char *member
= NULL
;
3260 const char *cctype
= NULL
;
3261 int warn_pwd_expire
;
3262 struct wbcLogonUserInfo
*info
= NULL
;
3263 struct wbcUserPasswordPolicyInfo
*policy
= NULL
;
3265 member
= get_member_from_config(ctx
);
3266 cctype
= get_krb5_cc_type_from_config(ctx
);
3267 warn_pwd_expire
= get_warn_pwd_expire_from_config(ctx
);
3269 /* Keep WINBIND_CACHED_LOGIN bit for
3270 * authentication after changing the password.
3271 * This will update the cached credentials in case
3272 * that winbindd_dual_pam_chauthtok() fails
3277 ret
= winbind_auth_request(ctx
, user
, pass_new
,
3279 &error
, &info
, &policy
,
3280 NULL
, &username_ret
);
3281 pass_old
= pass_new
= NULL
;
3283 if (ret
== PAM_SUCCESS
) {
3285 struct wbcAuthUserInfo
*user_info
= NULL
;
3287 if (info
&& info
->info
) {
3288 user_info
= info
->info
;
3291 /* warn a user if the password is about to
3293 _pam_warn_password_expiry(ctx
, user_info
, policy
,
3297 /* set some info3 info for other modules in the
3299 _pam_set_data_info3(ctx
, user_info
);
3301 /* put krb5ccname into env */
3302 _pam_setup_krb5_env(ctx
, info
);
3305 pam_set_item(pamh
, PAM_USER
,
3307 _pam_log_debug(ctx
, LOG_INFO
,
3308 "Returned user was '%s'",
3315 if (info
&& info
->blobs
) {
3316 wbcFreeMemory(info
->blobs
);
3318 wbcFreeMemory(info
);
3319 wbcFreeMemory(policy
);
3324 ret
= PAM_SERVICE_ERR
;
3329 /* Deal with offline errors. */
3331 const char *codes
[] = {
3332 "NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND",
3333 "NT_STATUS_NO_LOGON_SERVERS",
3334 "NT_STATUS_ACCESS_DENIED"
3337 for (i
=0; i
<ARRAY_SIZE(codes
); i
++) {
3339 if (_pam_check_remark_auth_err(ctx
, error
, codes
[i
], &_ret
)) {
3345 wbcFreeMemory(error
);
3347 _PAM_LOG_FUNCTION_LEAVE("pam_sm_chauthtok", ctx
, ret
);
3356 /* static module data */
3358 struct pam_module _pam_winbind_modstruct
= {
3360 pam_sm_authenticate
,
3363 pam_sm_open_session
,
3364 pam_sm_close_session
,
3371 * Copyright (c) Andrew Tridgell <tridge@samba.org> 2000
3372 * Copyright (c) Tim Potter <tpot@samba.org> 2000
3373 * Copyright (c) Andrew Bartlettt <abartlet@samba.org> 2002
3374 * Copyright (c) Guenther Deschner <gd@samba.org> 2005-2008
3375 * Copyright (c) Jan Rêkorajski 1999.
3376 * Copyright (c) Andrew G. Morgan 1996-8.
3377 * Copyright (c) Alex O. Yuriev, 1996.
3378 * Copyright (c) Cristian Gafton 1996.
3379 * Copyright (C) Elliot Lee <sopwith@redhat.com> 1996, Red Hat Software.
3381 * Redistribution and use in source and binary forms, with or without
3382 * modification, are permitted provided that the following conditions
3384 * 1. Redistributions of source code must retain the above copyright
3385 * notice, and the entire permission notice in its entirety,
3386 * including the disclaimer of warranties.
3387 * 2. Redistributions in binary form must reproduce the above copyright
3388 * notice, this list of conditions and the following disclaimer in the
3389 * documentation and/or other materials provided with the distribution.
3390 * 3. The name of the author may not be used to endorse or promote
3391 * products derived from this software without specific prior
3392 * written permission.
3394 * ALTERNATIVELY, this product may be distributed under the terms of
3395 * the GNU Public License, in which case the provisions of the GPL are
3396 * required INSTEAD OF the above restrictions. (This clause is
3397 * necessary due to a potential bad interaction between the GPL and
3398 * the restrictions contained in a BSD-style copyright.)
3400 * THIS SOFTWARE IS PROVIDED `AS IS'' AND ANY EXPRESS OR IMPLIED
3401 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
3402 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
3403 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
3404 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
3405 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
3406 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
3407 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
3408 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
3409 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
3410 * OF THE POSSIBILITY OF SUCH DAMAGE.