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);