2 Unix SMB/CIFS implementation.
4 Some Helpful wrappers on LDAP
6 Copyright (C) Andrew Tridgell 2001
7 Copyright (C) Guenther Deschner 2006,2007
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>.
27 a wrapper around ldap_search_s that retries depending on the error code
28 this is supposed to catch dropped connections and auto-reconnect
30 static ADS_STATUS
ads_do_search_retry_internal(ADS_STRUCT
*ads
, const char *bind_path
, int scope
,
32 const char **attrs
, void *args
,
35 ADS_STATUS status
= ADS_SUCCESS
;
42 time(NULL
) - ads
->last_attempt
< ADS_RECONNECT_TIME
) {
43 return ADS_ERROR(LDAP_SERVER_DOWN
);
46 bp
= SMB_STRDUP(bind_path
);
49 return ADS_ERROR(LDAP_NO_MEMORY
);
54 /* when binding anonymously, we cannot use the paged search LDAP
55 * control - Guenther */
57 if (ads
->auth
.flags
& ADS_AUTH_ANON_BIND
) {
58 status
= ads_do_search(ads
, bp
, scope
, expr
, attrs
, res
);
60 status
= ads_do_search_all_args(ads
, bp
, scope
, expr
, attrs
, args
, res
);
62 if (ADS_ERR_OK(status
)) {
63 DEBUG(5,("Search for %s in <%s> gave %d replies\n",
64 expr
, bp
, ads_count_replies(ads
, *res
)));
72 ads_msgfree(ads
, *res
);
75 DEBUG(3,("Reopening ads connection to realm '%s' after error %s\n",
76 ads
->config
.realm
, ads_errstr(status
)));
83 status
= ads_connect(ads
);
85 if (!ADS_ERR_OK(status
)) {
86 DEBUG(1,("ads_search_retry: failed to reconnect (%s)\n",
95 /* when binding anonymously, we cannot use the paged search LDAP
96 * control - Guenther */
98 if (ads
->auth
.flags
& ADS_AUTH_ANON_BIND
) {
99 status
= ads_do_search(ads
, bp
, scope
, expr
, attrs
, res
);
101 status
= ads_do_search_all_args(ads
, bp
, scope
, expr
, attrs
, args
, res
);
104 if (ADS_ERR_OK(status
)) {
105 DEBUG(5,("Search for filter: %s, base: %s gave %d replies\n",
106 expr
, bp
, ads_count_replies(ads
, *res
)));
113 if (!ADS_ERR_OK(status
)) {
114 DEBUG(1,("ads reopen failed after error %s\n",
115 ads_errstr(status
)));
120 ADS_STATUS
ads_do_search_retry(ADS_STRUCT
*ads
, const char *bind_path
,
121 int scope
, const char *expr
,
122 const char **attrs
, LDAPMessage
**res
)
124 return ads_do_search_retry_internal(ads
, bind_path
, scope
, expr
, attrs
, NULL
, res
);
127 ADS_STATUS
ads_do_search_retry_args(ADS_STRUCT
*ads
, const char *bind_path
,
128 int scope
, const char *expr
,
129 const char **attrs
, void *args
,
132 return ads_do_search_retry_internal(ads
, bind_path
, scope
, expr
, attrs
, args
, res
);
136 ADS_STATUS
ads_search_retry(ADS_STRUCT
*ads
, LDAPMessage
**res
,
137 const char *expr
, const char **attrs
)
139 return ads_do_search_retry(ads
, ads
->config
.bind_path
, LDAP_SCOPE_SUBTREE
,
143 ADS_STATUS
ads_search_retry_dn(ADS_STRUCT
*ads
, LDAPMessage
**res
,
147 return ads_do_search_retry(ads
, dn
, LDAP_SCOPE_BASE
,
148 "(objectclass=*)", attrs
, res
);
151 ADS_STATUS
ads_search_retry_extended_dn(ADS_STRUCT
*ads
, LDAPMessage
**res
,
154 enum ads_extended_dn_flags flags
)
158 args
.control
= ADS_EXTENDED_DN_OID
;
160 args
.critical
= True
;
162 return ads_do_search_retry_args(ads
, dn
, LDAP_SCOPE_BASE
,
163 "(objectclass=*)", attrs
, &args
, res
);
166 ADS_STATUS
ads_search_retry_extended_dn_ranged(ADS_STRUCT
*ads
, TALLOC_CTX
*mem_ctx
,
169 enum ads_extended_dn_flags flags
,
175 args
.control
= ADS_EXTENDED_DN_OID
;
177 args
.critical
= True
;
179 /* we can only range process one attribute */
180 if (!attrs
|| !attrs
[0] || attrs
[1]) {
181 return ADS_ERROR_NT(NT_STATUS_INVALID_PARAMETER
);
184 return ads_ranged_search(ads
, mem_ctx
, LDAP_SCOPE_BASE
, dn
,
185 "(objectclass=*)", &args
, attrs
[0],
186 strings
, num_strings
);
190 ADS_STATUS
ads_search_retry_dn_sd_flags(ADS_STRUCT
*ads
, LDAPMessage
**res
,
197 args
.control
= ADS_SD_FLAGS_OID
;
199 args
.critical
= True
;
201 return ads_do_search_retry_args(ads
, dn
, LDAP_SCOPE_BASE
,
202 "(objectclass=*)", attrs
, &args
, res
);
205 ADS_STATUS
ads_search_retry_sid(ADS_STRUCT
*ads
, LDAPMessage
**res
,
209 char *dn
, *sid_string
;
212 sid_string
= sid_binstring_hex(sid
);
213 if (sid_string
== NULL
) {
214 return ADS_ERROR(LDAP_NO_MEMORY
);
217 if (!asprintf(&dn
, "<SID=%s>", sid_string
)) {
218 SAFE_FREE(sid_string
);
219 return ADS_ERROR(LDAP_NO_MEMORY
);
222 status
= ads_do_search_retry(ads
, dn
, LDAP_SCOPE_BASE
,
223 "(objectclass=*)", attrs
, res
);
225 SAFE_FREE(sid_string
);
229 ADS_STATUS
ads_ranged_search(ADS_STRUCT
*ads
,
235 const char *range_attr
,
243 BOOL more_values
= False
;
248 attrs
= TALLOC_ARRAY(mem_ctx
, const char *, 3);
249 ADS_ERROR_HAVE_NO_MEMORY(attrs
);
251 attrs
[0] = talloc_strdup(mem_ctx
, range_attr
);
252 attrs
[1] = talloc_strdup(mem_ctx
, "usnChanged");
255 ADS_ERROR_HAVE_NO_MEMORY(attrs
[0]);
256 ADS_ERROR_HAVE_NO_MEMORY(attrs
[1]);
259 status
= ads_ranged_search_internal(ads
, mem_ctx
,
261 attrs
, args
, range_attr
,
262 strings
, num_strings
,
263 &first_usn
, &num_retries
,
266 if (NT_STATUS_EQUAL(STATUS_MORE_ENTRIES
, ads_ntstatus(status
))) {
270 if (!ADS_ERR_OK(status
)) {
276 } while (more_values
);
279 DEBUG(10,("returning with %d strings\n", (int)*num_strings
));
284 ADS_STATUS
ads_ranged_search_internal(ADS_STRUCT
*ads
,
291 const char *range_attr
,
298 LDAPMessage
*res
= NULL
;
303 DEBUG(10, ("Searching for attrs[0] = %s, attrs[1] = %s\n", attrs
[0], attrs
[1]));
305 *more_values
= False
;
307 status
= ads_do_search_retry_internal(ads
, base
, scope
, filter
, attrs
, args
, &res
);
309 if (!ADS_ERR_OK(status
)) {
310 DEBUG(1,("ads_search: %s\n",
311 ads_errstr(status
)));
316 return ADS_ERROR(LDAP_NO_MEMORY
);
319 count
= ads_count_replies(ads
, res
);
321 ads_msgfree(ads
, res
);
322 return ADS_ERROR(LDAP_SUCCESS
);
325 if (*num_strings
== 0) {
326 if (!ads_pull_uint32(ads
, res
, "usnChanged", first_usn
)) {
327 DEBUG(1, ("could not pull first usnChanged!\n"));
328 ads_msgfree(ads
, res
);
329 return ADS_ERROR(LDAP_NO_MEMORY
);
333 if (!ads_pull_uint32(ads
, res
, "usnChanged", ¤t_usn
)) {
334 DEBUG(1, ("could not pull current usnChanged!\n"));
335 ads_msgfree(ads
, res
);
336 return ADS_ERROR(LDAP_NO_MEMORY
);
339 if (*first_usn
!= current_usn
) {
340 DEBUG(5, ("USN on this record changed"
341 " - restarting search\n"));
342 if (*num_retries
< 5) {
345 ads_msgfree(ads
, res
);
346 return ADS_ERROR_NT(STATUS_MORE_ENTRIES
);
348 DEBUG(5, ("USN on this record changed"
349 " - restarted search too many times, aborting!\n"));
350 ads_msgfree(ads
, res
);
351 return ADS_ERROR(LDAP_NO_MEMORY
);
355 *strings
= ads_pull_strings_range(ads
, mem_ctx
, res
,
362 ads_msgfree(ads
, res
);
364 /* paranoia checks */
365 if (*strings
== NULL
&& *more_values
) {
366 DEBUG(0,("no strings found but more values???\n"));
367 return ADS_ERROR(LDAP_NO_MEMORY
);
369 if (*num_strings
== 0 && *more_values
) {
370 DEBUG(0,("no strings found but more values???\n"));
371 return ADS_ERROR(LDAP_NO_MEMORY
);
374 return (*more_values
) ? ADS_ERROR_NT(STATUS_MORE_ENTRIES
) : ADS_ERROR(LDAP_SUCCESS
);