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->ldap.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)));
79 status = ads_connect(ads);
81 if (!ADS_ERR_OK(status)) {
82 DEBUG(1,("ads_search_retry: failed to reconnect (%s)\n",
91 /* when binding anonymously, we cannot use the paged search LDAP
92 * control - Guenther */
94 if (ads->auth.flags & ADS_AUTH_ANON_BIND) {
95 status = ads_do_search(ads, bp, scope, expr, attrs, res);
97 status = ads_do_search_all_args(ads, bp, scope, expr, attrs, args, res);
100 if (ADS_ERR_OK(status)) {
101 DEBUG(5,("Search for filter: %s, base: %s gave %d replies\n",
102 expr, bp, ads_count_replies(ads, *res)));
109 if (!ADS_ERR_OK(status)) {
110 DEBUG(1,("ads reopen failed after error %s\n",
111 ads_errstr(status)));
116 ADS_STATUS ads_do_search_retry(ADS_STRUCT *ads, const char *bind_path,
117 int scope, const char *expr,
118 const char **attrs, LDAPMessage **res)
120 return ads_do_search_retry_internal(ads, bind_path, scope, expr, attrs, NULL, res);
123 ADS_STATUS ads_do_search_retry_args(ADS_STRUCT *ads, const char *bind_path,
124 int scope, const char *expr,
125 const char **attrs, void *args,
128 return ads_do_search_retry_internal(ads, bind_path, scope, expr, attrs, args, res);
132 ADS_STATUS ads_search_retry(ADS_STRUCT *ads, LDAPMessage **res,
133 const char *expr, const char **attrs)
135 return ads_do_search_retry(ads, ads->config.bind_path, LDAP_SCOPE_SUBTREE,
139 ADS_STATUS ads_search_retry_dn(ADS_STRUCT *ads, LDAPMessage **res,
143 return ads_do_search_retry(ads, dn, LDAP_SCOPE_BASE,
144 "(objectclass=*)", attrs, res);
147 ADS_STATUS ads_search_retry_extended_dn(ADS_STRUCT *ads, LDAPMessage **res,
150 enum ads_extended_dn_flags flags)
154 args.control = ADS_EXTENDED_DN_OID;
156 args.critical = True;
158 return ads_do_search_retry_args(ads, dn, LDAP_SCOPE_BASE,
159 "(objectclass=*)", attrs, &args, res);
162 ADS_STATUS ads_search_retry_dn_sd_flags(ADS_STRUCT *ads, LDAPMessage **res,
169 args.control = ADS_SD_FLAGS_OID;
171 args.critical = True;
173 return ads_do_search_retry_args(ads, dn, LDAP_SCOPE_BASE,
174 "(objectclass=*)", attrs, &args, res);
177 ADS_STATUS ads_search_retry_extended_dn_ranged(ADS_STRUCT *ads, TALLOC_CTX *mem_ctx,
180 enum ads_extended_dn_flags flags,
186 args.control = ADS_EXTENDED_DN_OID;
188 args.critical = True;
190 /* we can only range process one attribute */
191 if (!attrs || !attrs[0] || attrs[1]) {
192 return ADS_ERROR_NT(NT_STATUS_INVALID_PARAMETER);
195 return ads_ranged_search(ads, mem_ctx, LDAP_SCOPE_BASE, dn,
196 "(objectclass=*)", &args, attrs[0],
197 strings, num_strings);
201 ADS_STATUS ads_search_retry_sid(ADS_STRUCT *ads, LDAPMessage **res,
205 char *dn, *sid_string;
208 sid_string = sid_binstring_hex(sid);
209 if (sid_string == NULL) {
210 return ADS_ERROR(LDAP_NO_MEMORY);
213 if (!asprintf(&dn, "<SID=%s>", sid_string)) {
214 SAFE_FREE(sid_string);
215 return ADS_ERROR(LDAP_NO_MEMORY);
218 status = ads_do_search_retry(ads, dn, LDAP_SCOPE_BASE,
219 "(objectclass=*)", attrs, res);
221 SAFE_FREE(sid_string);
225 ADS_STATUS ads_ranged_search(ADS_STRUCT *ads,
231 const char *range_attr,
239 bool more_values = False;
244 attrs = TALLOC_ARRAY(mem_ctx, const char *, 3);
245 ADS_ERROR_HAVE_NO_MEMORY(attrs);
247 attrs[0] = talloc_strdup(mem_ctx, range_attr);
248 attrs[1] = talloc_strdup(mem_ctx, "usnChanged");
251 ADS_ERROR_HAVE_NO_MEMORY(attrs[0]);
252 ADS_ERROR_HAVE_NO_MEMORY(attrs[1]);
255 status = ads_ranged_search_internal(ads, mem_ctx,
257 attrs, args, range_attr,
258 strings, num_strings,
259 &first_usn, &num_retries,
262 if (NT_STATUS_EQUAL(STATUS_MORE_ENTRIES, ads_ntstatus(status))) {
266 if (!ADS_ERR_OK(status)) {
272 } while (more_values);
275 DEBUG(10,("returning with %d strings\n", (int)*num_strings));
280 ADS_STATUS ads_ranged_search_internal(ADS_STRUCT *ads,
287 const char *range_attr,
294 LDAPMessage *res = NULL;
299 DEBUG(10, ("Searching for attrs[0] = %s, attrs[1] = %s\n", attrs[0], attrs[1]));
301 *more_values = False;
303 status = ads_do_search_retry_internal(ads, base, scope, filter, attrs, args, &res);
305 if (!ADS_ERR_OK(status)) {
306 DEBUG(1,("ads_search: %s\n",
307 ads_errstr(status)));
312 return ADS_ERROR(LDAP_NO_MEMORY);
315 count = ads_count_replies(ads, res);
317 ads_msgfree(ads, res);
318 return ADS_ERROR(LDAP_SUCCESS);
321 if (*num_strings == 0) {
322 if (!ads_pull_uint32(ads, res, "usnChanged", first_usn)) {
323 DEBUG(1, ("could not pull first usnChanged!\n"));
324 ads_msgfree(ads, res);
325 return ADS_ERROR(LDAP_NO_MEMORY);
329 if (!ads_pull_uint32(ads, res, "usnChanged", ¤t_usn)) {
330 DEBUG(1, ("could not pull current usnChanged!\n"));
331 ads_msgfree(ads, res);
332 return ADS_ERROR(LDAP_NO_MEMORY);
335 if (*first_usn != current_usn) {
336 DEBUG(5, ("USN on this record changed"
337 " - restarting search\n"));
338 if (*num_retries < 5) {
341 ads_msgfree(ads, res);
342 return ADS_ERROR_NT(STATUS_MORE_ENTRIES);
344 DEBUG(5, ("USN on this record changed"
345 " - restarted search too many times, aborting!\n"));
346 ads_msgfree(ads, res);
347 return ADS_ERROR(LDAP_NO_MEMORY);
351 *strings = ads_pull_strings_range(ads, mem_ctx, res,
358 ads_msgfree(ads, res);
360 /* paranoia checks */
361 if (*strings == NULL && *more_values) {
362 DEBUG(0,("no strings found but more values???\n"));
363 return ADS_ERROR(LDAP_NO_MEMORY);
365 if (*num_strings == 0 && *more_values) {
366 DEBUG(0,("no strings found but more values???\n"));
367 return ADS_ERROR(LDAP_NO_MEMORY);
370 return (*more_values) ? ADS_ERROR_NT(STATUS_MORE_ENTRIES) : ADS_ERROR(LDAP_SUCCESS);