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)));
71 if (NT_STATUS_EQUAL(ads_ntstatus(status), NT_STATUS_IO_TIMEOUT) && ads->config.ldap_page_size >= 250) {
72 int new_page_size = (ads->config.ldap_page_size / 2);
73 DEBUG(1, ("Reducing LDAP page size from %d to %d due to IO_TIMEOUT\n",
74 ads->config.ldap_page_size, new_page_size));
75 ads->config.ldap_page_size = new_page_size;
79 ads_msgfree(ads, *res);
82 DEBUG(3,("Reopening ads connection to realm '%s' after error %s\n",
83 ads->config.realm, ads_errstr(status)));
86 status = ads_connect(ads);
88 if (!ADS_ERR_OK(status)) {
89 DEBUG(1,("ads_search_retry: failed to reconnect (%s)\n",
98 /* when binding anonymously, we cannot use the paged search LDAP
99 * control - Guenther */
101 if (ads->auth.flags & ADS_AUTH_ANON_BIND) {
102 status = ads_do_search(ads, bp, scope, expr, attrs, res);
104 status = ads_do_search_all_args(ads, bp, scope, expr, attrs, args, res);
107 if (ADS_ERR_OK(status)) {
108 DEBUG(5,("Search for filter: %s, base: %s gave %d replies\n",
109 expr, bp, ads_count_replies(ads, *res)));
116 if (!ADS_ERR_OK(status)) {
117 DEBUG(1,("ads reopen failed after error %s\n",
118 ads_errstr(status)));
123 ADS_STATUS ads_do_search_retry(ADS_STRUCT *ads, const char *bind_path,
124 int scope, const char *expr,
125 const char **attrs, LDAPMessage **res)
127 return ads_do_search_retry_internal(ads, bind_path, scope, expr, attrs, NULL, res);
130 ADS_STATUS ads_do_search_retry_args(ADS_STRUCT *ads, const char *bind_path,
131 int scope, const char *expr,
132 const char **attrs, void *args,
135 return ads_do_search_retry_internal(ads, bind_path, scope, expr, attrs, args, res);
139 ADS_STATUS ads_search_retry(ADS_STRUCT *ads, LDAPMessage **res,
140 const char *expr, const char **attrs)
142 return ads_do_search_retry(ads, ads->config.bind_path, LDAP_SCOPE_SUBTREE,
146 ADS_STATUS ads_search_retry_dn(ADS_STRUCT *ads, LDAPMessage **res,
150 return ads_do_search_retry(ads, dn, LDAP_SCOPE_BASE,
151 "(objectclass=*)", attrs, res);
154 ADS_STATUS ads_search_retry_extended_dn(ADS_STRUCT *ads, LDAPMessage **res,
157 enum ads_extended_dn_flags flags)
161 args.control = ADS_EXTENDED_DN_OID;
163 args.critical = True;
165 return ads_do_search_retry_args(ads, dn, LDAP_SCOPE_BASE,
166 "(objectclass=*)", attrs, &args, res);
169 ADS_STATUS ads_search_retry_dn_sd_flags(ADS_STRUCT *ads, LDAPMessage **res,
176 args.control = ADS_SD_FLAGS_OID;
178 args.critical = True;
180 return ads_do_search_retry_args(ads, dn, LDAP_SCOPE_BASE,
181 "(objectclass=*)", attrs, &args, res);
184 ADS_STATUS ads_search_retry_extended_dn_ranged(ADS_STRUCT *ads, TALLOC_CTX *mem_ctx,
187 enum ads_extended_dn_flags flags,
193 args.control = ADS_EXTENDED_DN_OID;
195 args.critical = True;
197 /* we can only range process one attribute */
198 if (!attrs || !attrs[0] || attrs[1]) {
199 return ADS_ERROR_NT(NT_STATUS_INVALID_PARAMETER);
202 return ads_ranged_search(ads, mem_ctx, LDAP_SCOPE_BASE, dn,
203 "(objectclass=*)", &args, attrs[0],
204 strings, num_strings);
208 ADS_STATUS ads_search_retry_sid(ADS_STRUCT *ads, LDAPMessage **res,
212 char *dn, *sid_string;
215 sid_string = sid_binstring_hex(sid);
216 if (sid_string == NULL) {
217 return ADS_ERROR(LDAP_NO_MEMORY);
220 if (!asprintf(&dn, "<SID=%s>", sid_string)) {
221 SAFE_FREE(sid_string);
222 return ADS_ERROR(LDAP_NO_MEMORY);
225 status = ads_do_search_retry(ads, dn, LDAP_SCOPE_BASE,
226 "(objectclass=*)", attrs, res);
228 SAFE_FREE(sid_string);
232 ADS_STATUS ads_ranged_search(ADS_STRUCT *ads,
238 const char *range_attr,
246 bool more_values = False;
251 attrs = TALLOC_ARRAY(mem_ctx, const char *, 3);
252 ADS_ERROR_HAVE_NO_MEMORY(attrs);
254 attrs[0] = talloc_strdup(mem_ctx, range_attr);
255 attrs[1] = talloc_strdup(mem_ctx, "usnChanged");
258 ADS_ERROR_HAVE_NO_MEMORY(attrs[0]);
259 ADS_ERROR_HAVE_NO_MEMORY(attrs[1]);
262 status = ads_ranged_search_internal(ads, mem_ctx,
264 attrs, args, range_attr,
265 strings, num_strings,
266 &first_usn, &num_retries,
269 if (NT_STATUS_EQUAL(STATUS_MORE_ENTRIES, ads_ntstatus(status))) {
273 if (!ADS_ERR_OK(status)) {
279 } while (more_values);
282 DEBUG(10,("returning with %d strings\n", (int)*num_strings));
287 ADS_STATUS ads_ranged_search_internal(ADS_STRUCT *ads,
294 const char *range_attr,
301 LDAPMessage *res = NULL;
306 DEBUG(10, ("Searching for attrs[0] = %s, attrs[1] = %s\n", attrs[0], attrs[1]));
308 *more_values = False;
310 status = ads_do_search_retry_internal(ads, base, scope, filter, attrs, args, &res);
312 if (!ADS_ERR_OK(status)) {
313 DEBUG(1,("ads_search: %s\n",
314 ads_errstr(status)));
319 return ADS_ERROR(LDAP_NO_MEMORY);
322 count = ads_count_replies(ads, res);
324 ads_msgfree(ads, res);
325 return ADS_ERROR(LDAP_SUCCESS);
328 if (*num_strings == 0) {
329 if (!ads_pull_uint32(ads, res, "usnChanged", first_usn)) {
330 DEBUG(1, ("could not pull first usnChanged!\n"));
331 ads_msgfree(ads, res);
332 return ADS_ERROR(LDAP_NO_MEMORY);
336 if (!ads_pull_uint32(ads, res, "usnChanged", ¤t_usn)) {
337 DEBUG(1, ("could not pull current usnChanged!\n"));
338 ads_msgfree(ads, res);
339 return ADS_ERROR(LDAP_NO_MEMORY);
342 if (*first_usn != current_usn) {
343 DEBUG(5, ("USN on this record changed"
344 " - restarting search\n"));
345 if (*num_retries < 5) {
348 ads_msgfree(ads, res);
349 return ADS_ERROR_NT(STATUS_MORE_ENTRIES);
351 DEBUG(5, ("USN on this record changed"
352 " - restarted search too many times, aborting!\n"));
353 ads_msgfree(ads, res);
354 return ADS_ERROR(LDAP_NO_MEMORY);
358 *strings = ads_pull_strings_range(ads, mem_ctx, res,
365 ads_msgfree(ads, res);
367 /* paranoia checks */
368 if (*strings == NULL && *more_values) {
369 DEBUG(0,("no strings found but more values???\n"));
370 return ADS_ERROR(LDAP_NO_MEMORY);
372 if (*num_strings == 0 && *more_values) {
373 DEBUG(0,("no strings found but more values???\n"));
374 return ADS_ERROR(LDAP_NO_MEMORY);
377 return (*more_values) ? ADS_ERROR_NT(STATUS_MORE_ENTRIES) : ADS_ERROR(LDAP_SUCCESS);