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Fix valgrind memory leak in bug #6814 - Fixes for problems reported by valgrind
[Samba.git] / source3 / lib / smbldap.c
blob7287e3d9986a7698a0d40350a1eac71788edac70
1 /*
2 Unix SMB/CIFS implementation.
3 LDAP protocol helper functions for SAMBA
4 Copyright (C) Jean François Micouleau 1998
5 Copyright (C) Gerald Carter 2001-2003
6 Copyright (C) Shahms King 2001
7 Copyright (C) Andrew Bartlett 2002-2003
8 Copyright (C) Stefan (metze) Metzmacher 2002-2003
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
22
23 */
24
25 #include "includes.h"
26 #include "smbldap.h"
27
28 #ifndef LDAP_OPT_SUCCESS
29 #define LDAP_OPT_SUCCESS 0
30 #endif
31
32 /* Try not to hit the up or down server forever */
33
34 #define SMBLDAP_DONT_PING_TIME 10 /* ping only all 10 seconds */
35 #define SMBLDAP_NUM_RETRIES 8 /* retry only 8 times */
36
37 #define SMBLDAP_IDLE_TIME 150 /* After 2.5 minutes disconnect */
38
39
40 /* attributes used by Samba 2.2 */
41
42 ATTRIB_MAP_ENTRY attrib_map_v22[] = {
43 { LDAP_ATTR_UID, "uid" },
44 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
45 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
46 { LDAP_ATTR_UNIX_HOME, "homeDirectory" },
47 { LDAP_ATTR_PWD_LAST_SET, "pwdLastSet" },
48 { LDAP_ATTR_PWD_CAN_CHANGE, "pwdCanChange" },
49 { LDAP_ATTR_PWD_MUST_CHANGE, "pwdMustChange" },
50 { LDAP_ATTR_LOGON_TIME, "logonTime" },
51 { LDAP_ATTR_LOGOFF_TIME, "logoffTime" },
52 { LDAP_ATTR_KICKOFF_TIME, "kickoffTime" },
53 { LDAP_ATTR_CN, "cn" },
54 { LDAP_ATTR_SN, "sn" },
55 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
56 { LDAP_ATTR_HOME_PATH, "smbHome" },
57 { LDAP_ATTR_HOME_DRIVE, "homeDrive" },
58 { LDAP_ATTR_LOGON_SCRIPT, "scriptPath" },
59 { LDAP_ATTR_PROFILE_PATH, "profilePath" },
60 { LDAP_ATTR_DESC, "description" },
61 { LDAP_ATTR_USER_WKS, "userWorkstations"},
62 { LDAP_ATTR_USER_RID, "rid" },
63 { LDAP_ATTR_PRIMARY_GROUP_RID, "primaryGroupID"},
64 { LDAP_ATTR_LMPW, "lmPassword" },
65 { LDAP_ATTR_NTPW, "ntPassword" },
66 { LDAP_ATTR_DOMAIN, "domain" },
67 { LDAP_ATTR_OBJCLASS, "objectClass" },
68 { LDAP_ATTR_ACB_INFO, "acctFlags" },
69 { LDAP_ATTR_MOD_TIMESTAMP, "modifyTimestamp" },
70 { LDAP_ATTR_LIST_END, NULL }
71 };
72
73 ATTRIB_MAP_ENTRY attrib_map_to_delete_v22[] = {
74 { LDAP_ATTR_PWD_LAST_SET, "pwdLastSet" },
75 { LDAP_ATTR_PWD_CAN_CHANGE, "pwdCanChange" },
76 { LDAP_ATTR_PWD_MUST_CHANGE, "pwdMustChange" },
77 { LDAP_ATTR_LOGON_TIME, "logonTime" },
78 { LDAP_ATTR_LOGOFF_TIME, "logoffTime" },
79 { LDAP_ATTR_KICKOFF_TIME, "kickoffTime" },
80 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
81 { LDAP_ATTR_HOME_PATH, "smbHome" },
82 { LDAP_ATTR_HOME_DRIVE, "homeDrives" },
83 { LDAP_ATTR_LOGON_SCRIPT, "scriptPath" },
84 { LDAP_ATTR_PROFILE_PATH, "profilePath" },
85 { LDAP_ATTR_USER_WKS, "userWorkstations"},
86 { LDAP_ATTR_USER_RID, "rid" },
87 { LDAP_ATTR_PRIMARY_GROUP_RID, "primaryGroupID"},
88 { LDAP_ATTR_LMPW, "lmPassword" },
89 { LDAP_ATTR_NTPW, "ntPassword" },
90 { LDAP_ATTR_DOMAIN, "domain" },
91 { LDAP_ATTR_ACB_INFO, "acctFlags" },
92 { LDAP_ATTR_LIST_END, NULL }
93 };
94
95 /* attributes used by Samba 3.0's sambaSamAccount */
96
97 ATTRIB_MAP_ENTRY attrib_map_v30[] = {
98 { LDAP_ATTR_UID, "uid" },
99 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
100 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
101 { LDAP_ATTR_UNIX_HOME, "homeDirectory" },
102 { LDAP_ATTR_PWD_LAST_SET, "sambaPwdLastSet" },
103 { LDAP_ATTR_PWD_CAN_CHANGE, "sambaPwdCanChange" },
104 { LDAP_ATTR_PWD_MUST_CHANGE, "sambaPwdMustChange" },
105 { LDAP_ATTR_LOGON_TIME, "sambaLogonTime" },
106 { LDAP_ATTR_LOGOFF_TIME, "sambaLogoffTime" },
107 { LDAP_ATTR_KICKOFF_TIME, "sambaKickoffTime" },
108 { LDAP_ATTR_CN, "cn" },
109 { LDAP_ATTR_SN, "sn" },
110 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
111 { LDAP_ATTR_HOME_DRIVE, "sambaHomeDrive" },
112 { LDAP_ATTR_HOME_PATH, "sambaHomePath" },
113 { LDAP_ATTR_LOGON_SCRIPT, "sambaLogonScript" },
114 { LDAP_ATTR_PROFILE_PATH, "sambaProfilePath" },
115 { LDAP_ATTR_DESC, "description" },
116 { LDAP_ATTR_USER_WKS, "sambaUserWorkstations" },
117 { LDAP_ATTR_USER_SID, LDAP_ATTRIBUTE_SID },
118 { LDAP_ATTR_PRIMARY_GROUP_SID, "sambaPrimaryGroupSID" },
119 { LDAP_ATTR_LMPW, "sambaLMPassword" },
120 { LDAP_ATTR_NTPW, "sambaNTPassword" },
121 { LDAP_ATTR_DOMAIN, "sambaDomainName" },
122 { LDAP_ATTR_OBJCLASS, "objectClass" },
123 { LDAP_ATTR_ACB_INFO, "sambaAcctFlags" },
124 { LDAP_ATTR_MUNGED_DIAL, "sambaMungedDial" },
125 { LDAP_ATTR_BAD_PASSWORD_COUNT, "sambaBadPasswordCount" },
126 { LDAP_ATTR_BAD_PASSWORD_TIME, "sambaBadPasswordTime" },
127 { LDAP_ATTR_PWD_HISTORY, "sambaPasswordHistory" },
128 { LDAP_ATTR_MOD_TIMESTAMP, "modifyTimestamp" },
129 { LDAP_ATTR_LOGON_HOURS, "sambaLogonHours" },
130 { LDAP_ATTR_LIST_END, NULL }
131 };
132
133 ATTRIB_MAP_ENTRY attrib_map_to_delete_v30[] = {
134 { LDAP_ATTR_PWD_LAST_SET, "sambaPwdLastSet" },
135 { LDAP_ATTR_PWD_CAN_CHANGE, "sambaPwdCanChange" },
136 { LDAP_ATTR_PWD_MUST_CHANGE, "sambaPwdMustChange" },
137 { LDAP_ATTR_LOGON_TIME, "sambaLogonTime" },
138 { LDAP_ATTR_LOGOFF_TIME, "sambaLogoffTime" },
139 { LDAP_ATTR_KICKOFF_TIME, "sambaKickoffTime" },
140 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
141 { LDAP_ATTR_HOME_DRIVE, "sambaHomeDrive" },
142 { LDAP_ATTR_HOME_PATH, "sambaHomePath" },
143 { LDAP_ATTR_LOGON_SCRIPT, "sambaLogonScript" },
144 { LDAP_ATTR_PROFILE_PATH, "sambaProfilePath" },
145 { LDAP_ATTR_USER_WKS, "sambaUserWorkstations" },
146 { LDAP_ATTR_USER_SID, LDAP_ATTRIBUTE_SID },
147 { LDAP_ATTR_PRIMARY_GROUP_SID, "sambaPrimaryGroupSID" },
148 { LDAP_ATTR_LMPW, "sambaLMPassword" },
149 { LDAP_ATTR_NTPW, "sambaNTPassword" },
150 { LDAP_ATTR_DOMAIN, "sambaDomainName" },
151 { LDAP_ATTR_ACB_INFO, "sambaAcctFlags" },
152 { LDAP_ATTR_MUNGED_DIAL, "sambaMungedDial" },
153 { LDAP_ATTR_BAD_PASSWORD_COUNT, "sambaBadPasswordCount" },
154 { LDAP_ATTR_BAD_PASSWORD_TIME, "sambaBadPasswordTime" },
155 { LDAP_ATTR_PWD_HISTORY, "sambaPasswordHistory" },
156 { LDAP_ATTR_LOGON_HOURS, "sambaLogonHours" },
157 { LDAP_ATTR_LIST_END, NULL }
158 };
159
160 /* attributes used for allocating RIDs */
161
162 ATTRIB_MAP_ENTRY dominfo_attr_list[] = {
163 { LDAP_ATTR_DOMAIN, "sambaDomainName" },
164 { LDAP_ATTR_NEXT_RID, "sambaNextRid" },
165 { LDAP_ATTR_NEXT_USERRID, "sambaNextUserRid" },
166 { LDAP_ATTR_NEXT_GROUPRID, "sambaNextGroupRid" },
167 { LDAP_ATTR_DOM_SID, LDAP_ATTRIBUTE_SID },
168 { LDAP_ATTR_ALGORITHMIC_RID_BASE,"sambaAlgorithmicRidBase"},
169 { LDAP_ATTR_OBJCLASS, "objectClass" },
170 { LDAP_ATTR_LIST_END, NULL },
171 };
172
173 /* Samba 3.0 group mapping attributes */
174
175 ATTRIB_MAP_ENTRY groupmap_attr_list[] = {
176 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
177 { LDAP_ATTR_GROUP_SID, LDAP_ATTRIBUTE_SID },
178 { LDAP_ATTR_GROUP_TYPE, "sambaGroupType" },
179 { LDAP_ATTR_SID_LIST, "sambaSIDList" },
180 { LDAP_ATTR_DESC, "description" },
181 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
182 { LDAP_ATTR_CN, "cn" },
183 { LDAP_ATTR_OBJCLASS, "objectClass" },
184 { LDAP_ATTR_LIST_END, NULL }
185 };
186
187 ATTRIB_MAP_ENTRY groupmap_attr_list_to_delete[] = {
188 { LDAP_ATTR_GROUP_SID, LDAP_ATTRIBUTE_SID },
189 { LDAP_ATTR_GROUP_TYPE, "sambaGroupType" },
190 { LDAP_ATTR_DESC, "description" },
191 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
192 { LDAP_ATTR_SID_LIST, "sambaSIDList" },
193 { LDAP_ATTR_LIST_END, NULL }
194 };
195
196 /* idmap_ldap sambaUnixIdPool */
197
198 ATTRIB_MAP_ENTRY idpool_attr_list[] = {
199 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
200 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
201 { LDAP_ATTR_OBJCLASS, "objectClass" },
202 { LDAP_ATTR_LIST_END, NULL }
203 };
204
205 ATTRIB_MAP_ENTRY sidmap_attr_list[] = {
206 { LDAP_ATTR_SID, LDAP_ATTRIBUTE_SID },
207 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
208 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
209 { LDAP_ATTR_OBJCLASS, "objectClass" },
210 { LDAP_ATTR_LIST_END, NULL }
211 };
212
213 /**********************************************************************
214 perform a simple table lookup and return the attribute name
215 **********************************************************************/
216
217 const char* get_attr_key2string( ATTRIB_MAP_ENTRY table[], int key )
218 {
219 int i = 0;
220
221 while ( table[i].attrib != LDAP_ATTR_LIST_END ) {
222 if ( table[i].attrib == key )
223 return table[i].name;
224 i++;
225 }
226
227 return NULL;
228 }
229
230
231 /**********************************************************************
232 Return the list of attribute names from a mapping table
233 **********************************************************************/
234
235 const char** get_attr_list( TALLOC_CTX *mem_ctx, ATTRIB_MAP_ENTRY table[] )
236 {
237 const char **names;
238 int i = 0;
239
240 while ( table[i].attrib != LDAP_ATTR_LIST_END )
241 i++;
242 i++;
243
244 names = TALLOC_ARRAY( mem_ctx, const char*, i );
245 if ( !names ) {
246 DEBUG(0,("get_attr_list: out of memory\n"));
247 return NULL;
248 }
249
250 i = 0;
251 while ( table[i].attrib != LDAP_ATTR_LIST_END ) {
252 names[i] = talloc_strdup( names, table[i].name );
253 i++;
254 }
255 names[i] = NULL;
256
257 return names;
258 }
259
260 /*******************************************************************
261 Search an attribute and return the first value found.
262 ******************************************************************/
263
264 bool smbldap_get_single_attribute (LDAP * ldap_struct, LDAPMessage * entry,
265 const char *attribute, char *value,
266 int max_len)
267 {
268 char **values;
269
270 if ( !attribute )
271 return False;
272
273 value[0] = '\0';
274
275 if ((values = ldap_get_values (ldap_struct, entry, attribute)) == NULL) {
276 DEBUG (10, ("smbldap_get_single_attribute: [%s] = [<does not exist>]\n", attribute));
277
278 return False;
279 }
280
281 if (convert_string(CH_UTF8, CH_UNIX,values[0], -1, value, max_len, False) == (size_t)-1) {
282 DEBUG(1, ("smbldap_get_single_attribute: string conversion of [%s] = [%s] failed!\n",
283 attribute, values[0]));
284 ldap_value_free(values);
285 return False;
286 }
287
288 ldap_value_free(values);
289 #ifdef DEBUG_PASSWORDS
290 DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n", attribute, value));
291 #endif
292 return True;
293 }
294
295 char * smbldap_talloc_single_attribute(LDAP *ldap_struct, LDAPMessage *entry,
296 const char *attribute,
297 TALLOC_CTX *mem_ctx)
298 {
299 char **values;
300 char *result;
301 size_t converted_size;
302
303 if (attribute == NULL) {
304 return NULL;
305 }
306
307 values = ldap_get_values(ldap_struct, entry, attribute);
308
309 if (values == NULL) {
310 DEBUG(10, ("attribute %s does not exist\n", attribute));
311 return NULL;
312 }
313
314 if (ldap_count_values(values) != 1) {
315 DEBUG(10, ("attribute %s has %d values, expected only one\n",
316 attribute, ldap_count_values(values)));
317 ldap_value_free(values);
318 return NULL;
319 }
320
321 if (!pull_utf8_talloc(mem_ctx, &result, values[0], &converted_size)) {
322 DEBUG(10, ("pull_utf8_talloc failed\n"));
323 ldap_value_free(values);
324 return NULL;
325 }
326
327 ldap_value_free(values);
328
329 #ifdef DEBUG_PASSWORDS
330 DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n",
331 attribute, result));
332 #endif
333 return result;
334 }
335
336 char * smbldap_talloc_smallest_attribute(LDAP *ldap_struct, LDAPMessage *entry,
337 const char *attribute,
338 TALLOC_CTX *mem_ctx)
339 {
340 char **values;
341 char *result;
342 size_t converted_size;
343 int i, num_values;
344
345 if (attribute == NULL) {
346 return NULL;
347 }
348
349 values = ldap_get_values(ldap_struct, entry, attribute);
350
351 if (values == NULL) {
352 DEBUG(10, ("attribute %s does not exist\n", attribute));
353 return NULL;
354 }
355
356 if (!pull_utf8_talloc(mem_ctx, &result, values[0], &converted_size)) {
357 DEBUG(10, ("pull_utf8_talloc failed\n"));
358 ldap_value_free(values);
359 return NULL;
360 }
361
362 num_values = ldap_count_values(values);
363
364 for (i=1; i<num_values; i++) {
365 char *tmp;
366
367 if (!pull_utf8_talloc(mem_ctx, &tmp, values[i],
368 &converted_size)) {
369 DEBUG(10, ("pull_utf8_talloc failed\n"));
370 TALLOC_FREE(result);
371 ldap_value_free(values);
372 return NULL;
373 }
374
375 if (StrCaseCmp(tmp, result) < 0) {
376 TALLOC_FREE(result);
377 result = tmp;
378 } else {
379 TALLOC_FREE(tmp);
380 }
381 }
382
383 ldap_value_free(values);
384
385 #ifdef DEBUG_PASSWORDS
386 DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n",
387 attribute, result));
388 #endif
389 return result;
390 }
391
392 bool smbldap_talloc_single_blob(TALLOC_CTX *mem_ctx, LDAP *ld,
393 LDAPMessage *msg, const char *attrib,
394 DATA_BLOB *blob)
395 {
396 struct berval **values;
397
398 values = ldap_get_values_len(ld, msg, attrib);
399 if (!values) {
400 return false;
401 }
402
403 if (ldap_count_values_len(values) != 1) {
404 DEBUG(10, ("Expected one value for %s, got %d\n", attrib,
405 ldap_count_values_len(values)));
406 return false;
407 }
408
409 *blob = data_blob_talloc(mem_ctx, values[0]->bv_val,
410 values[0]->bv_len);
411 ldap_value_free_len(values);
412
413 return (blob->data != NULL);
414 }
415
416 bool smbldap_pull_sid(LDAP *ld, LDAPMessage *msg, const char *attrib,
417 struct dom_sid *sid)
418 {
419 DATA_BLOB blob;
420 bool ret;
421
422 if (!smbldap_talloc_single_blob(talloc_tos(), ld, msg, attrib,
423 &blob)) {
424 return false;
425 }
426 ret = sid_parse((char *)blob.data, blob.length, sid);
427 TALLOC_FREE(blob.data);
428 return ret;
429 }
430
431 static int ldapmsg_destructor(LDAPMessage **result) {
432 ldap_msgfree(*result);
433 return 0;
434 }
435
436 void talloc_autofree_ldapmsg(TALLOC_CTX *mem_ctx, LDAPMessage *result)
437 {
438 LDAPMessage **handle;
439
440 if (result == NULL) {
441 return;
442 }
443
444 handle = TALLOC_P(mem_ctx, LDAPMessage *);
445 SMB_ASSERT(handle != NULL);
446
447 *handle = result;
448 talloc_set_destructor(handle, ldapmsg_destructor);
449 }
450
451 static int ldapmod_destructor(LDAPMod ***mod) {
452 ldap_mods_free(*mod, True);
453 return 0;
454 }
455
456 void talloc_autofree_ldapmod(TALLOC_CTX *mem_ctx, LDAPMod **mod)
457 {
458 LDAPMod ***handle;
459
460 if (mod == NULL) {
461 return;
462 }
463
464 handle = TALLOC_P(mem_ctx, LDAPMod **);
465 SMB_ASSERT(handle != NULL);
466
467 *handle = mod;
468 talloc_set_destructor(handle, ldapmod_destructor);
469 }
470
471 /************************************************************************
472 Routine to manage the LDAPMod structure array
473 manage memory used by the array, by each struct, and values
474 ***********************************************************************/
475
476 void smbldap_set_mod (LDAPMod *** modlist, int modop, const char *attribute, const char *value)
477 {
478 LDAPMod **mods;
479 int i;
480 int j;
481
482 mods = *modlist;
483
484 /* sanity checks on the mod values */
485
486 if (attribute == NULL || *attribute == '\0') {
487 return;
488 }
489
490 #if 0 /* commented out after discussion with abartlet. Do not reenable.
491 left here so other do not re-add similar code --jerry */
492 if (value == NULL || *value == '\0')
493 return;
494 #endif
495
496 if (mods == NULL) {
497 mods = SMB_MALLOC_P(LDAPMod *);
498 if (mods == NULL) {
499 smb_panic("smbldap_set_mod: out of memory!");
500 /* notreached. */
501 }
502 mods[0] = NULL;
503 }
504
505 for (i = 0; mods[i] != NULL; ++i) {
506 if (mods[i]->mod_op == modop && strequal(mods[i]->mod_type, attribute))
507 break;
508 }
509
510 if (mods[i] == NULL) {
511 mods = SMB_REALLOC_ARRAY (mods, LDAPMod *, i + 2);
512 if (mods == NULL) {
513 smb_panic("smbldap_set_mod: out of memory!");
514 /* notreached. */
515 }
516 mods[i] = SMB_MALLOC_P(LDAPMod);
517 if (mods[i] == NULL) {
518 smb_panic("smbldap_set_mod: out of memory!");
519 /* notreached. */
520 }
521 mods[i]->mod_op = modop;
522 mods[i]->mod_values = NULL;
523 mods[i]->mod_type = SMB_STRDUP(attribute);
524 mods[i + 1] = NULL;
525 }
526
527 if (value != NULL) {
528 char *utf8_value = NULL;
529 size_t converted_size;
530
531 j = 0;
532 if (mods[i]->mod_values != NULL) {
533 for (; mods[i]->mod_values[j] != NULL; j++);
534 }
535 mods[i]->mod_values = SMB_REALLOC_ARRAY(mods[i]->mod_values, char *, j + 2);
536
537 if (mods[i]->mod_values == NULL) {
538 smb_panic("smbldap_set_mod: out of memory!");
539 /* notreached. */
540 }
541
542 if (!push_utf8_talloc(talloc_tos(), &utf8_value, value, &converted_size)) {
543 smb_panic("smbldap_set_mod: String conversion failure!");
544 /* notreached. */
545 }
546
547 mods[i]->mod_values[j] = SMB_STRDUP(utf8_value);
548 TALLOC_FREE(utf8_value);
549 SMB_ASSERT(mods[i]->mod_values[j] != NULL);
550
551 mods[i]->mod_values[j + 1] = NULL;
552 }
553 *modlist = mods;
554 }
555
556 /**********************************************************************
557 Set attribute to newval in LDAP, regardless of what value the
558 attribute had in LDAP before.
559 *********************************************************************/
560
561 void smbldap_make_mod(LDAP *ldap_struct, LDAPMessage *existing,
562 LDAPMod ***mods,
563 const char *attribute, const char *newval)
564 {
565 char oldval[2048]; /* current largest allowed value is mungeddial */
566 bool existed;
567
568 if (attribute == NULL) {
569 /* This can actually happen for ldapsam_compat where we for
570 * example don't have a password history */
571 return;
572 }
573
574 if (existing != NULL) {
575 existed = smbldap_get_single_attribute(ldap_struct, existing, attribute, oldval, sizeof(oldval));
576 } else {
577 existed = False;
578 *oldval = '\0';
579 }
580
581 /* all of our string attributes are case insensitive */
582
583 if (existed && newval && (StrCaseCmp(oldval, newval) == 0)) {
584
585 /* Believe it or not, but LDAP will deny a delete and
586 an add at the same time if the values are the
587 same... */
588 DEBUG(10,("smbldap_make_mod: attribute |%s| not changed.\n", attribute));
589 return;
590 }
591
592 if (existed) {
593 /* There has been no value before, so don't delete it.
594 * Here's a possible race: We might end up with
595 * duplicate attributes */
596 /* By deleting exactly the value we found in the entry this
597 * should be race-free in the sense that the LDAP-Server will
598 * deny the complete operation if somebody changed the
599 * attribute behind our back. */
600 /* This will also allow modifying single valued attributes
601 * in Novell NDS. In NDS you have to first remove attribute and then
602 * you could add new value */
603
604 DEBUG(10,("smbldap_make_mod: deleting attribute |%s| values |%s|\n", attribute, oldval));
605 smbldap_set_mod(mods, LDAP_MOD_DELETE, attribute, oldval);
606 }
607
608 /* Regardless of the real operation (add or modify)
609 we add the new value here. We rely on deleting
610 the old value, should it exist. */
611
612 if ((newval != NULL) && (strlen(newval) > 0)) {
613 DEBUG(10,("smbldap_make_mod: adding attribute |%s| value |%s|\n", attribute, newval));
614 smbldap_set_mod(mods, LDAP_MOD_ADD, attribute, newval);
615 }
616 }
617
618 /**********************************************************************
619 Some varients of the LDAP rebind code do not pass in the third 'arg'
620 pointer to a void*, so we try and work around it by assuming that the
621 value of the 'LDAP *' pointer is the same as the one we had passed in
622 **********************************************************************/
623
624 struct smbldap_state_lookup {
625 LDAP *ld;
626 struct smbldap_state *smbldap_state;
627 struct smbldap_state_lookup *prev, *next;
628 };
629
630 static struct smbldap_state_lookup *smbldap_state_lookup_list;
631
632 static struct smbldap_state *smbldap_find_state(LDAP *ld)
633 {
634 struct smbldap_state_lookup *t;
635
636 for (t = smbldap_state_lookup_list; t; t = t->next) {
637 if (t->ld == ld) {
638 return t->smbldap_state;
639 }
640 }
641 return NULL;
642 }
643
644 static void smbldap_delete_state(struct smbldap_state *smbldap_state)
645 {
646 struct smbldap_state_lookup *t;
647
648 for (t = smbldap_state_lookup_list; t; t = t->next) {
649 if (t->smbldap_state == smbldap_state) {
650 DLIST_REMOVE(smbldap_state_lookup_list, t);
651 SAFE_FREE(t);
652 return;
653 }
654 }
655 }
656
657 static void smbldap_store_state(LDAP *ld, struct smbldap_state *smbldap_state)
658 {
659 struct smbldap_state *tmp_ldap_state;
660 struct smbldap_state_lookup *t;
661
662 if ((tmp_ldap_state = smbldap_find_state(ld))) {
663 SMB_ASSERT(tmp_ldap_state == smbldap_state);
664 return;
665 }
666
667 t = SMB_XMALLOC_P(struct smbldap_state_lookup);
668 ZERO_STRUCTP(t);
669
670 DLIST_ADD_END(smbldap_state_lookup_list, t, struct smbldap_state_lookup *);
671 t->ld = ld;
672 t->smbldap_state = smbldap_state;
673 }
674
675 /********************************************************************
676 start TLS on an existing LDAP connection
677 *******************************************************************/
678
679 int smb_ldap_start_tls(LDAP *ldap_struct, int version)
680 {
681 #ifdef LDAP_OPT_X_TLS
682 int rc;
683 #endif
684
685 if (lp_ldap_ssl() != LDAP_SSL_START_TLS) {
686 return LDAP_SUCCESS;
687 }
688
689 #ifdef LDAP_OPT_X_TLS
690 if (version != LDAP_VERSION3) {
691 DEBUG(0, ("Need LDAPv3 for Start TLS\n"));
692 return LDAP_OPERATIONS_ERROR;
693 }
694
695 if ((rc = ldap_start_tls_s (ldap_struct, NULL, NULL)) != LDAP_SUCCESS) {
696 DEBUG(0,("Failed to issue the StartTLS instruction: %s\n",
697 ldap_err2string(rc)));
698 return rc;
699 }
700
701 DEBUG (3, ("StartTLS issued: using a TLS connection\n"));
702 return LDAP_SUCCESS;
703 #else
704 DEBUG(0,("StartTLS not supported by LDAP client libraries!\n"));
705 return LDAP_OPERATIONS_ERROR;
706 #endif
707 }
708
709 /********************************************************************
710 setup a connection to the LDAP server based on a uri
711 *******************************************************************/
712
713 int smb_ldap_setup_conn(LDAP **ldap_struct, const char *uri)
714 {
715 int rc;
716
717 DEBUG(10, ("smb_ldap_setup_connection: %s\n", uri));
718
719 #ifdef HAVE_LDAP_INITIALIZE
720
721 rc = ldap_initialize(ldap_struct, uri);
722 if (rc) {
723 DEBUG(0, ("ldap_initialize: %s\n", ldap_err2string(rc)));
724 return rc;
725 }
726
727 if (lp_ldap_ref_follow() != Auto) {
728 rc = ldap_set_option(*ldap_struct, LDAP_OPT_REFERRALS,
729 lp_ldap_ref_follow() ? LDAP_OPT_ON : LDAP_OPT_OFF);
730 if (rc != LDAP_SUCCESS)
731 DEBUG(0, ("Failed to set LDAP_OPT_REFERRALS: %s\n",
732 ldap_err2string(rc)));
733 }
734
735 return LDAP_SUCCESS;
736 #else
737
738 /* Parse the string manually */
739
740 {
741 int port = 0;
742 fstring protocol;
743 fstring host;
744 SMB_ASSERT(sizeof(protocol)>10 && sizeof(host)>254);
745
746
747 /* skip leading "URL:" (if any) */
748 if ( strnequal( uri, "URL:", 4 ) ) {
749 uri += 4;
750 }
751
752 sscanf(uri, "%10[^:]://%254[^:/]:%d", protocol, host, &port);
753
754 if (port == 0) {
755 if (strequal(protocol, "ldap")) {
756 port = LDAP_PORT;
757 } else if (strequal(protocol, "ldaps")) {
758 port = LDAPS_PORT;
759 } else {
760 DEBUG(0, ("unrecognised protocol (%s)!\n", protocol));
761 }
762 }
763
764 if ((*ldap_struct = ldap_init(host, port)) == NULL) {
765 DEBUG(0, ("ldap_init failed !\n"));
766 return LDAP_OPERATIONS_ERROR;
767 }
768
769 if (strequal(protocol, "ldaps")) {
770 #ifdef LDAP_OPT_X_TLS
771 int tls = LDAP_OPT_X_TLS_HARD;
772 if (ldap_set_option (*ldap_struct, LDAP_OPT_X_TLS, &tls) != LDAP_SUCCESS)
773 {
774 DEBUG(0, ("Failed to setup a TLS session\n"));
775 }
776
777 DEBUG(3,("LDAPS option set...!\n"));
778 #else
779 DEBUG(0,("smbldap_open_connection: Secure connection not supported by LDAP client libraries!\n"));
780 return LDAP_OPERATIONS_ERROR;
781 #endif /* LDAP_OPT_X_TLS */
782 }
783 }
784 #endif /* HAVE_LDAP_INITIALIZE */
785
786 /* now set connection timeout */
787 #ifdef LDAP_X_OPT_CONNECT_TIMEOUT /* Netscape */
788 {
789 int ct = lp_ldap_connection_timeout()*1000;
790 rc = ldap_set_option(*ldap_struct, LDAP_X_OPT_CONNECT_TIMEOUT, &ct);
791 if (rc != LDAP_SUCCESS) {
792 DEBUG(0,("Failed to setup an ldap connection timeout %d: %s\n",
793 ct, ldap_err2string(rc)));
794 }
795 }
796 #elif defined (LDAP_OPT_NETWORK_TIMEOUT) /* OpenLDAP */
797 {
798 struct timeval ct;
799 ct.tv_usec = 0;
800 ct.tv_sec = lp_ldap_connection_timeout();
801 rc = ldap_set_option(*ldap_struct, LDAP_OPT_NETWORK_TIMEOUT, &ct);
802 if (rc != LDAP_SUCCESS) {
803 DEBUG(0,("Failed to setup an ldap connection timeout %d: %s\n",
804 (int)ct.tv_sec, ldap_err2string(rc)));
805 }
806 }
807 #endif
808
809 return LDAP_SUCCESS;
810 }
811
812 /********************************************************************
813 try to upgrade to Version 3 LDAP if not already, in either case return current
814 version
815 *******************************************************************/
816
817 int smb_ldap_upgrade_conn(LDAP *ldap_struct, int *new_version)
818 {
819 int version;
820 int rc;
821
822 /* assume the worst */
823 *new_version = LDAP_VERSION2;
824
825 rc = ldap_get_option(ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
826 if (rc) {
827 return rc;
828 }
829
830 if (version == LDAP_VERSION3) {
831 *new_version = LDAP_VERSION3;
832 return LDAP_SUCCESS;
833 }
834
835 /* try upgrade */
836 version = LDAP_VERSION3;
837 rc = ldap_set_option (ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
838 if (rc) {
839 return rc;
840 }
841
842 *new_version = LDAP_VERSION3;
843 return LDAP_SUCCESS;
844 }
845
846 /*******************************************************************
847 open a connection to the ldap server (just until the bind)
848 ******************************************************************/
849
850 int smb_ldap_setup_full_conn(LDAP **ldap_struct, const char *uri)
851 {
852 int rc, version;
853
854 rc = smb_ldap_setup_conn(ldap_struct, uri);
855 if (rc) {
856 return rc;
857 }
858
859 rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
860 if (rc) {
861 return rc;
862 }
863
864 rc = smb_ldap_start_tls(*ldap_struct, version);
865 if (rc) {
866 return rc;
867 }
868
869 return LDAP_SUCCESS;
870 }
871
872 /*******************************************************************
873 open a connection to the ldap server.
874 ******************************************************************/
875 static int smbldap_open_connection (struct smbldap_state *ldap_state)
876
877 {
878 int rc = LDAP_SUCCESS;
879 int version;
880 LDAP **ldap_struct = &ldap_state->ldap_struct;
881
882 rc = smb_ldap_setup_conn(ldap_struct, ldap_state->uri);
883 if (rc) {
884 return rc;
885 }
886
887 /* Store the LDAP pointer in a lookup list */
888
889 smbldap_store_state(*ldap_struct, ldap_state);
890
891 /* Upgrade to LDAPv3 if possible */
892
893 rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
894 if (rc) {
895 return rc;
896 }
897
898 /* Start TLS if required */
899
900 rc = smb_ldap_start_tls(*ldap_struct, version);
901 if (rc) {
902 return rc;
903 }
904
905 DEBUG(2, ("smbldap_open_connection: connection opened\n"));
906 return rc;
907 }
908
909 /*******************************************************************
910 a rebind function for authenticated referrals
911 This version takes a void* that we can shove useful stuff in :-)
912 ******************************************************************/
913 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
914 #else
915 static int rebindproc_with_state (LDAP * ld, char **whop, char **credp,
916 int *methodp, int freeit, void *arg)
917 {
918 struct smbldap_state *ldap_state = arg;
919
920 /** @TODO Should we be doing something to check what servers we rebind to?
921 Could we get a referral to a machine that we don't want to give our
922 username and password to? */
923
924 if (freeit) {
925 SAFE_FREE(*whop);
926 if (*credp) {
927 memset(*credp, '\0', strlen(*credp));
928 }
929 SAFE_FREE(*credp);
930 } else {
931 DEBUG(5,("rebind_proc_with_state: Rebinding as \"%s\"\n",
932 ldap_state->bind_dn?ldap_state->bind_dn:"[Anonymous bind]"));
933
934 if (ldap_state->anonymous) {
935 *whop = NULL;
936 *credp = NULL;
937 } else {
938 *whop = SMB_STRDUP(ldap_state->bind_dn);
939 if (!*whop) {
940 return LDAP_NO_MEMORY;
941 }
942 *credp = SMB_STRDUP(ldap_state->bind_secret);
943 if (!*credp) {
944 SAFE_FREE(*whop);
945 return LDAP_NO_MEMORY;
946 }
947 }
948 *methodp = LDAP_AUTH_SIMPLE;
949 }
950
951 GetTimeOfDay(&ldap_state->last_rebind);
952
953 return 0;
954 }
955 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
956
957 /*******************************************************************
958 a rebind function for authenticated referrals
959 This version takes a void* that we can shove useful stuff in :-)
960 and actually does the connection.
961 ******************************************************************/
962 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
963 static int rebindproc_connect_with_state (LDAP *ldap_struct,
964 LDAP_CONST char *url,
965 ber_tag_t request,
966 ber_int_t msgid, void *arg)
967 {
968 struct smbldap_state *ldap_state =
969 (struct smbldap_state *)arg;
970 int rc;
971 int version;
972
973 DEBUG(5,("rebindproc_connect_with_state: Rebinding to %s as \"%s\"\n",
974 url, ldap_state->bind_dn?ldap_state->bind_dn:"[Anonymous bind]"));
975
976 /* call START_TLS again (ldaps:// is handled by the OpenLDAP library
977 * itself) before rebinding to another LDAP server to avoid to expose
978 * our credentials. At least *try* to secure the connection - Guenther */
979
980 smb_ldap_upgrade_conn(ldap_struct, &version);
981 smb_ldap_start_tls(ldap_struct, version);
982
983 /** @TODO Should we be doing something to check what servers we rebind to?
984 Could we get a referral to a machine that we don't want to give our
985 username and password to? */
986
987 rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
988
989 /* only set the last rebind timestamp when we did rebind after a
990 * non-read LDAP operation. That way we avoid the replication sleep
991 * after a simple redirected search operation - Guenther */
992
993 switch (request) {
994
995 case LDAP_REQ_MODIFY:
996 case LDAP_REQ_ADD:
997 case LDAP_REQ_DELETE:
998 case LDAP_REQ_MODDN:
999 case LDAP_REQ_EXTENDED:
1000 DEBUG(10,("rebindproc_connect_with_state: "
1001 "setting last_rebind timestamp "
1002 "(req: 0x%02x)\n", (unsigned int)request));
1003 GetTimeOfDay(&ldap_state->last_rebind);
1004 break;
1005 default:
1006 ZERO_STRUCT(ldap_state->last_rebind);
1007 break;
1008 }
1009
1010 return rc;
1011 }
1012 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1013
1014 /*******************************************************************
1015 Add a rebind function for authenticated referrals
1016 ******************************************************************/
1017 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
1018 #else
1019 # if LDAP_SET_REBIND_PROC_ARGS == 2
1020 static int rebindproc (LDAP *ldap_struct, char **whop, char **credp,
1021 int *method, int freeit )
1022 {
1023 struct smbldap_state *ldap_state = smbldap_find_state(ldap_struct);
1024
1025 return rebindproc_with_state(ldap_struct, whop, credp,
1026 method, freeit, ldap_state);
1027 }
1028 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
1029 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1030
1031 /*******************************************************************
1032 a rebind function for authenticated referrals
1033 this also does the connection, but no void*.
1034 ******************************************************************/
1035 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
1036 # if LDAP_SET_REBIND_PROC_ARGS == 2
1037 static int rebindproc_connect (LDAP * ld, LDAP_CONST char *url, int request,
1038 ber_int_t msgid)
1039 {
1040 struct smbldap_state *ldap_state = smbldap_find_state(ld);
1041
1042 return rebindproc_connect_with_state(ld, url, (ber_tag_t)request, msgid,
1043 ldap_state);
1044 }
1045 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
1046 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1047
1048 /*******************************************************************
1049 connect to the ldap server under system privilege.
1050 ******************************************************************/
1051 static int smbldap_connect_system(struct smbldap_state *ldap_state, LDAP * ldap_struct)
1052 {
1053 int rc;
1054 int version;
1055
1056 if (!ldap_state->anonymous && !ldap_state->bind_dn) {
1057 char *bind_dn = NULL;
1058 char *bind_secret = NULL;
1059
1060 /* get the default dn and password only if they are not set already */
1061 if (!fetch_ldap_pw(&bind_dn, &bind_secret)) {
1062 DEBUG(0, ("ldap_connect_system: Failed to retrieve password from secrets.tdb\n"));
1063 return LDAP_INVALID_CREDENTIALS;
1064 }
1065 smbldap_set_creds(ldap_state, false, bind_dn, bind_secret);
1066 SAFE_FREE(bind_dn);
1067 memset(bind_secret, '\0', strlen(bind_secret));
1068 SAFE_FREE(bind_secret);
1069 }
1070
1071 /* removed the sasl_bind_s "EXTERNAL" stuff, as my testsuite
1072 (OpenLDAP) doesnt' seem to support it */
1073
1074 DEBUG(10,("ldap_connect_system: Binding to ldap server %s as \"%s\"\n",
1075 ldap_state->uri, ldap_state->bind_dn));
1076
1077 #ifdef HAVE_LDAP_SET_REBIND_PROC
1078 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
1079 # if LDAP_SET_REBIND_PROC_ARGS == 2
1080 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect);
1081 # endif
1082 # if LDAP_SET_REBIND_PROC_ARGS == 3
1083 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect_with_state, (void *)ldap_state);
1084 # endif
1085 #else /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1086 # if LDAP_SET_REBIND_PROC_ARGS == 2
1087 ldap_set_rebind_proc(ldap_struct, &rebindproc);
1088 # endif
1089 # if LDAP_SET_REBIND_PROC_ARGS == 3
1090 ldap_set_rebind_proc(ldap_struct, &rebindproc_with_state, (void *)ldap_state);
1091 # endif
1092 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1093 #endif
1094
1095 rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
1096
1097 if (rc != LDAP_SUCCESS) {
1098 char *ld_error = NULL;
1099 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
1100 &ld_error);
1101 DEBUG(ldap_state->num_failures ? 2 : 0,
1102 ("failed to bind to server %s with dn=\"%s\" Error: %s\n\t%s\n",
1103 ldap_state->uri,
1104 ldap_state->bind_dn ? ldap_state->bind_dn : "[Anonymous bind]",
1105 ldap_err2string(rc),
1106 ld_error ? ld_error : "(unknown)"));
1107 SAFE_FREE(ld_error);
1108 ldap_state->num_failures++;
1109 return rc;
1110 }
1111
1112 ldap_state->num_failures = 0;
1113 ldap_state->paged_results = False;
1114
1115 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
1116
1117 if (smbldap_has_control(ldap_state->ldap_struct, ADS_PAGE_CTL_OID) && version == 3) {
1118 ldap_state->paged_results = True;
1119 }
1120
1121 DEBUG(3, ("ldap_connect_system: successful connection to the LDAP server\n"));
1122 DEBUGADD(10, ("ldap_connect_system: LDAP server %s support paged results\n",
1123 ldap_state->paged_results ? "does" : "does not"));
1124 return rc;
1125 }
1126
1127 static void smbldap_idle_fn(struct event_context *event_ctx,
1128 struct timed_event *te,
1129 struct timeval now,
1130 void *private_data);
1131
1132 /**********************************************************************
1133 Connect to LDAP server (called before every ldap operation)
1134 *********************************************************************/
1135 static int smbldap_open(struct smbldap_state *ldap_state)
1136 {
1137 int rc, opt_rc;
1138 bool reopen = False;
1139 SMB_ASSERT(ldap_state);
1140
1141 if ((ldap_state->ldap_struct != NULL) && ((ldap_state->last_ping + SMBLDAP_DONT_PING_TIME) < time(NULL))) {
1142
1143 #ifdef HAVE_UNIXSOCKET
1144 struct sockaddr_un addr;
1145 #else
1146 struct sockaddr addr;
1147 #endif
1148 socklen_t len = sizeof(addr);
1149 int sd;
1150
1151 opt_rc = ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_DESC, &sd);
1152 if (opt_rc == 0 && (getpeername(sd, (struct sockaddr *) &addr, &len)) < 0 )
1153 reopen = True;
1154
1155 #ifdef HAVE_UNIXSOCKET
1156 if (opt_rc == 0 && addr.sun_family == AF_UNIX)
1157 reopen = True;
1158 #endif
1159 if (reopen) {
1160 /* the other end has died. reopen. */
1161 ldap_unbind(ldap_state->ldap_struct);
1162 ldap_state->ldap_struct = NULL;
1163 ldap_state->last_ping = (time_t)0;
1164 } else {
1165 ldap_state->last_ping = time(NULL);
1166 }
1167 }
1168
1169 if (ldap_state->ldap_struct != NULL) {
1170 DEBUG(11,("smbldap_open: already connected to the LDAP server\n"));
1171 return LDAP_SUCCESS;
1172 }
1173
1174 if ((rc = smbldap_open_connection(ldap_state))) {
1175 return rc;
1176 }
1177
1178 if ((rc = smbldap_connect_system(ldap_state, ldap_state->ldap_struct))) {
1179 ldap_unbind(ldap_state->ldap_struct);
1180 ldap_state->ldap_struct = NULL;
1181 return rc;
1182 }
1183
1184
1185 ldap_state->last_ping = time(NULL);
1186 ldap_state->pid = sys_getpid();
1187
1188 TALLOC_FREE(ldap_state->idle_event);
1189
1190 if (ldap_state->event_context != NULL) {
1191 ldap_state->idle_event = event_add_timed(
1192 ldap_state->event_context, NULL,
1193 timeval_current_ofs(SMBLDAP_IDLE_TIME, 0),
1194 smbldap_idle_fn, ldap_state);
1195 }
1196
1197 DEBUG(4,("The LDAP server is successfully connected\n"));
1198
1199 return LDAP_SUCCESS;
1200 }
1201
1202 /**********************************************************************
1203 Disconnect from LDAP server
1204 *********************************************************************/
1205 static NTSTATUS smbldap_close(struct smbldap_state *ldap_state)
1206 {
1207 if (!ldap_state)
1208 return NT_STATUS_INVALID_PARAMETER;
1209
1210 if (ldap_state->ldap_struct != NULL) {
1211 ldap_unbind(ldap_state->ldap_struct);
1212 ldap_state->ldap_struct = NULL;
1213 }
1214
1215 smbldap_delete_state(ldap_state);
1216
1217 DEBUG(5,("The connection to the LDAP server was closed\n"));
1218 /* maybe free the results here --metze */
1219
1220 return NT_STATUS_OK;
1221 }
1222
1223 static bool got_alarm;
1224
1225 static void (*old_handler)(int);
1226
1227 static void gotalarm_sig(int dummy)
1228 {
1229 got_alarm = True;
1230 }
1231
1232 static int another_ldap_try(struct smbldap_state *ldap_state, int *rc,
1233 int *attempts, time_t endtime)
1234 {
1235 time_t now = time(NULL);
1236 int open_rc = LDAP_SERVER_DOWN;
1237
1238 if (*rc != LDAP_SERVER_DOWN)
1239 goto no_next;
1240
1241 if (now >= endtime) {
1242 smbldap_close(ldap_state);
1243 *rc = LDAP_TIMEOUT;
1244 goto no_next;
1245 }
1246
1247 if (*attempts == 0) {
1248 got_alarm = False;
1249 old_handler = CatchSignal(SIGALRM, gotalarm_sig);
1250 alarm(endtime - now);
1251
1252 if (ldap_state->pid != sys_getpid())
1253 smbldap_close(ldap_state);
1254 }
1255
1256 while (1) {
1257
1258 if (*attempts != 0)
1259 smb_msleep(1000);
1260
1261 *attempts += 1;
1262
1263 open_rc = smbldap_open(ldap_state);
1264
1265 if (open_rc == LDAP_SUCCESS) {
1266 ldap_state->last_use = now;
1267 return True;
1268 }
1269
1270 if (open_rc == LDAP_INSUFFICIENT_ACCESS) {
1271 /* The fact that we are non-root or any other
1272 * access-denied condition will not change in the next
1273 * round of trying */
1274 *rc = open_rc;
1275 break;
1276 }
1277
1278 if (got_alarm) {
1279 *rc = LDAP_TIMEOUT;
1280 break;
1281 }
1282
1283 if (open_rc != LDAP_SUCCESS) {
1284 DEBUG(1, ("Connection to LDAP server failed for the "
1285 "%d try!\n", *attempts));
1286 }
1287 }
1288
1289 no_next:
1290 CatchSignal(SIGALRM, old_handler);
1291 alarm(0);
1292 ldap_state->last_use = now;
1293 return False;
1294 }
1295
1296 /*********************************************************************
1297 ********************************************************************/
1298
1299 static int smbldap_search_ext(struct smbldap_state *ldap_state,
1300 const char *base, int scope, const char *filter,
1301 const char *attrs[], int attrsonly,
1302 LDAPControl **sctrls, LDAPControl **cctrls,
1303 int sizelimit, LDAPMessage **res)
1304 {
1305 int rc = LDAP_SERVER_DOWN;
1306 int attempts = 0;
1307 char *utf8_filter;
1308 time_t endtime = time(NULL)+lp_ldap_timeout();
1309 struct timeval timeout;
1310 size_t converted_size;
1311
1312 SMB_ASSERT(ldap_state);
1313
1314 DEBUG(5,("smbldap_search_ext: base => [%s], filter => [%s], "
1315 "scope => [%d]\n", base, filter, scope));
1316
1317 if (ldap_state->last_rebind.tv_sec > 0) {
1318 struct timeval tval;
1319 int64_t tdiff = 0;
1320 int sleep_time = 0;
1321
1322 ZERO_STRUCT(tval);
1323 GetTimeOfDay(&tval);
1324
1325 tdiff = usec_time_diff(&tval, &ldap_state->last_rebind);
1326 tdiff /= 1000; /* Convert to milliseconds. */
1327
1328 sleep_time = lp_ldap_replication_sleep()-(int)tdiff;
1329 sleep_time = MIN(sleep_time, MAX_LDAP_REPLICATION_SLEEP_TIME);
1330
1331 if (sleep_time > 0) {
1332 /* we wait for the LDAP replication */
1333 DEBUG(5,("smbldap_search_ext: waiting %d milliseconds "
1334 "for LDAP replication.\n",sleep_time));
1335 smb_msleep(sleep_time);
1336 DEBUG(5,("smbldap_search_ext: go on!\n"));
1337 }
1338 ZERO_STRUCT(ldap_state->last_rebind);
1339 }
1340
1341 if (!push_utf8_talloc(talloc_tos(), &utf8_filter, filter, &converted_size)) {
1342 return LDAP_NO_MEMORY;
1343 }
1344
1345 /* Setup timeout for the ldap_search_ext_s call - local and remote. */
1346 timeout.tv_sec = lp_ldap_timeout();
1347 timeout.tv_usec = 0;
1348
1349 /* Setup alarm timeout.... Do we need both of these ? JRA.
1350 * Yes, I think we do need both of these. The server timeout only
1351 * covers the case where the server's operation takes too long. It
1352 * does not cover the case where the request hangs on its way to the
1353 * server. The server side timeout is not strictly necessary, it's
1354 * just a bit more kind to the server. VL. */
1355
1356 got_alarm = 0;
1357 CatchSignal(SIGALRM, SIGNAL_CAST gotalarm_sig);
1358 alarm(lp_ldap_timeout());
1359 /* End setup timeout. */
1360
1361 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1362 rc = ldap_search_ext_s(ldap_state->ldap_struct, base, scope,
1363 utf8_filter,
1364 CONST_DISCARD(char **, attrs),
1365 attrsonly, sctrls, cctrls, &timeout,
1366 sizelimit, res);
1367 if (rc != LDAP_SUCCESS) {
1368 char *ld_error = NULL;
1369 int ld_errno;
1370
1371 ldap_get_option(ldap_state->ldap_struct,
1372 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1373
1374 ldap_get_option(ldap_state->ldap_struct,
1375 LDAP_OPT_ERROR_STRING, &ld_error);
1376 DEBUG(10, ("Failed search for base: %s, error: %d (%s) "
1377 "(%s)\n", base, ld_errno,
1378 ldap_err2string(rc),
1379 ld_error ? ld_error : "unknown"));
1380 SAFE_FREE(ld_error);
1381
1382 if (ld_errno == LDAP_SERVER_DOWN) {
1383 ldap_unbind(ldap_state->ldap_struct);
1384 ldap_state->ldap_struct = NULL;
1385 }
1386 }
1387 }
1388
1389 TALLOC_FREE(utf8_filter);
1390
1391 /* Teardown timeout. */
1392 CatchSignal(SIGALRM, SIGNAL_CAST SIG_IGN);
1393 alarm(0);
1394
1395 if (got_alarm != 0)
1396 return LDAP_TIMELIMIT_EXCEEDED;
1397
1398 return rc;
1399 }
1400
1401 int smbldap_search(struct smbldap_state *ldap_state,
1402 const char *base, int scope, const char *filter,
1403 const char *attrs[], int attrsonly,
1404 LDAPMessage **res)
1405 {
1406 return smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1407 attrsonly, NULL, NULL, LDAP_NO_LIMIT, res);
1408 }
1409
1410 int smbldap_search_paged(struct smbldap_state *ldap_state,
1411 const char *base, int scope, const char *filter,
1412 const char **attrs, int attrsonly, int pagesize,
1413 LDAPMessage **res, void **cookie)
1414 {
1415 LDAPControl pr;
1416 LDAPControl **rcontrols;
1417 LDAPControl *controls[2] = { NULL, NULL};
1418 BerElement *cookie_be = NULL;
1419 struct berval *cookie_bv = NULL;
1420 int tmp = 0, i, rc;
1421 bool critical = True;
1422
1423 *res = NULL;
1424
1425 DEBUG(3,("smbldap_search_paged: base => [%s], filter => [%s],"
1426 "scope => [%d], pagesize => [%d]\n",
1427 base, filter, scope, pagesize));
1428
1429 cookie_be = ber_alloc_t(LBER_USE_DER);
1430 if (cookie_be == NULL) {
1431 DEBUG(0,("smbldap_create_page_control: ber_alloc_t returns "
1432 "NULL\n"));
1433 return LDAP_NO_MEMORY;
1434 }
1435
1436 /* construct cookie */
1437 if (*cookie != NULL) {
1438 ber_printf(cookie_be, "{iO}", (ber_int_t) pagesize, *cookie);
1439 ber_bvfree((struct berval *)*cookie); /* don't need it from last time */
1440 *cookie = NULL;
1441 } else {
1442 ber_printf(cookie_be, "{io}", (ber_int_t) pagesize, "", 0);
1443 }
1444 ber_flatten(cookie_be, &cookie_bv);
1445
1446 pr.ldctl_oid = CONST_DISCARD(char *, ADS_PAGE_CTL_OID);
1447 pr.ldctl_iscritical = (char) critical;
1448 pr.ldctl_value.bv_len = cookie_bv->bv_len;
1449 pr.ldctl_value.bv_val = cookie_bv->bv_val;
1450
1451 controls[0] = &pr;
1452 controls[1] = NULL;
1453
1454 rc = smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1455 0, controls, NULL, LDAP_NO_LIMIT, res);
1456
1457 ber_free(cookie_be, 1);
1458 ber_bvfree(cookie_bv);
1459
1460 if (rc != 0) {
1461 DEBUG(3,("smbldap_search_paged: smbldap_search_ext(%s) "
1462 "failed with [%s]\n", filter, ldap_err2string(rc)));
1463 goto done;
1464 }
1465
1466 DEBUG(3,("smbldap_search_paged: search was successful\n"));
1467
1468 rc = ldap_parse_result(ldap_state->ldap_struct, *res, NULL, NULL,
1469 NULL, NULL, &rcontrols, 0);
1470 if (rc != 0) {
1471 DEBUG(3,("smbldap_search_paged: ldap_parse_result failed " \
1472 "with [%s]\n", ldap_err2string(rc)));
1473 goto done;
1474 }
1475
1476 if (rcontrols == NULL)
1477 goto done;
1478
1479 for (i=0; rcontrols[i]; i++) {
1480
1481 if (strcmp(ADS_PAGE_CTL_OID, rcontrols[i]->ldctl_oid) != 0)
1482 continue;
1483
1484 cookie_be = ber_init(&rcontrols[i]->ldctl_value);
1485 ber_scanf(cookie_be,"{iO}", &tmp, &cookie_bv);
1486 /* the berval is the cookie, but must be freed when it is all
1487 done */
1488 if (cookie_bv->bv_len)
1489 *cookie=ber_bvdup(cookie_bv);
1490 else
1491 *cookie=NULL;
1492 ber_bvfree(cookie_bv);
1493 ber_free(cookie_be, 1);
1494 break;
1495 }
1496 ldap_controls_free(rcontrols);
1497 done:
1498 return rc;
1499 }
1500
1501 int smbldap_modify(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1502 {
1503 int rc = LDAP_SERVER_DOWN;
1504 int attempts = 0;
1505 char *utf8_dn;
1506 time_t endtime = time(NULL)+lp_ldap_timeout();
1507 size_t converted_size;
1508
1509 SMB_ASSERT(ldap_state);
1510
1511 DEBUG(5,("smbldap_modify: dn => [%s]\n", dn ));
1512
1513 if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
1514 return LDAP_NO_MEMORY;
1515 }
1516
1517 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1518 rc = ldap_modify_s(ldap_state->ldap_struct, utf8_dn, attrs);
1519 if (rc != LDAP_SUCCESS) {
1520 char *ld_error = NULL;
1521 int ld_errno;
1522
1523 ldap_get_option(ldap_state->ldap_struct,
1524 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1525
1526 ldap_get_option(ldap_state->ldap_struct,
1527 LDAP_OPT_ERROR_STRING, &ld_error);
1528 DEBUG(10, ("Failed to modify dn: %s, error: %d (%s) "
1529 "(%s)\n", dn, ld_errno,
1530 ldap_err2string(rc),
1531 ld_error ? ld_error : "unknown"));
1532 SAFE_FREE(ld_error);
1533
1534 if (ld_errno == LDAP_SERVER_DOWN) {
1535 ldap_unbind(ldap_state->ldap_struct);
1536 ldap_state->ldap_struct = NULL;
1537 }
1538 }
1539 }
1540
1541 TALLOC_FREE(utf8_dn);
1542 return rc;
1543 }
1544
1545 int smbldap_add(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1546 {
1547 int rc = LDAP_SERVER_DOWN;
1548 int attempts = 0;
1549 char *utf8_dn;
1550 time_t endtime = time(NULL)+lp_ldap_timeout();
1551 size_t converted_size;
1552
1553 SMB_ASSERT(ldap_state);
1554
1555 DEBUG(5,("smbldap_add: dn => [%s]\n", dn ));
1556
1557 if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
1558 return LDAP_NO_MEMORY;
1559 }
1560
1561 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1562 rc = ldap_add_s(ldap_state->ldap_struct, utf8_dn, attrs);
1563 if (rc != LDAP_SUCCESS) {
1564 char *ld_error = NULL;
1565 int ld_errno;
1566
1567 ldap_get_option(ldap_state->ldap_struct,
1568 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1569
1570 ldap_get_option(ldap_state->ldap_struct,
1571 LDAP_OPT_ERROR_STRING, &ld_error);
1572 DEBUG(10, ("Failed to add dn: %s, error: %d (%s) "
1573 "(%s)\n", dn, ld_errno,
1574 ldap_err2string(rc),
1575 ld_error ? ld_error : "unknown"));
1576 SAFE_FREE(ld_error);
1577
1578 if (ld_errno == LDAP_SERVER_DOWN) {
1579 ldap_unbind(ldap_state->ldap_struct);
1580 ldap_state->ldap_struct = NULL;
1581 }
1582 }
1583 }
1584
1585 TALLOC_FREE(utf8_dn);
1586 return rc;
1587 }
1588
1589 int smbldap_delete(struct smbldap_state *ldap_state, const char *dn)
1590 {
1591 int rc = LDAP_SERVER_DOWN;
1592 int attempts = 0;
1593 char *utf8_dn;
1594 time_t endtime = time(NULL)+lp_ldap_timeout();
1595 size_t converted_size;
1596
1597 SMB_ASSERT(ldap_state);
1598
1599 DEBUG(5,("smbldap_delete: dn => [%s]\n", dn ));
1600
1601 if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
1602 return LDAP_NO_MEMORY;
1603 }
1604
1605 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1606 rc = ldap_delete_s(ldap_state->ldap_struct, utf8_dn);
1607 if (rc != LDAP_SUCCESS) {
1608 char *ld_error = NULL;
1609 int ld_errno;
1610
1611 ldap_get_option(ldap_state->ldap_struct,
1612 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1613
1614 ldap_get_option(ldap_state->ldap_struct,
1615 LDAP_OPT_ERROR_STRING, &ld_error);
1616 DEBUG(10, ("Failed to delete dn: %s, error: %d (%s) "
1617 "(%s)\n", dn, ld_errno,
1618 ldap_err2string(rc),
1619 ld_error ? ld_error : "unknown"));
1620 SAFE_FREE(ld_error);
1621
1622 if (ld_errno == LDAP_SERVER_DOWN) {
1623 ldap_unbind(ldap_state->ldap_struct);
1624 ldap_state->ldap_struct = NULL;
1625 }
1626 }
1627 }
1628
1629 TALLOC_FREE(utf8_dn);
1630 return rc;
1631 }
1632
1633 int smbldap_extended_operation(struct smbldap_state *ldap_state,
1634 LDAP_CONST char *reqoid, struct berval *reqdata,
1635 LDAPControl **serverctrls, LDAPControl **clientctrls,
1636 char **retoidp, struct berval **retdatap)
1637 {
1638 int rc = LDAP_SERVER_DOWN;
1639 int attempts = 0;
1640 time_t endtime = time(NULL)+lp_ldap_timeout();
1641
1642 if (!ldap_state)
1643 return (-1);
1644
1645 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1646 rc = ldap_extended_operation_s(ldap_state->ldap_struct, reqoid,
1647 reqdata, serverctrls,
1648 clientctrls, retoidp, retdatap);
1649 if (rc != LDAP_SUCCESS) {
1650 char *ld_error = NULL;
1651 int ld_errno;
1652
1653 ldap_get_option(ldap_state->ldap_struct,
1654 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1655
1656 ldap_get_option(ldap_state->ldap_struct,
1657 LDAP_OPT_ERROR_STRING, &ld_error);
1658 DEBUG(10, ("Extended operation failed with error: "
1659 "%d (%s) (%s)\n", ld_errno,
1660 ldap_err2string(rc),
1661 ld_error ? ld_error : "unknown"));
1662 SAFE_FREE(ld_error);
1663
1664 if (ld_errno == LDAP_SERVER_DOWN) {
1665 ldap_unbind(ldap_state->ldap_struct);
1666 ldap_state->ldap_struct = NULL;
1667 }
1668 }
1669 }
1670
1671 return rc;
1672 }
1673
1674 /*******************************************************************
1675 run the search by name.
1676 ******************************************************************/
1677 int smbldap_search_suffix (struct smbldap_state *ldap_state,
1678 const char *filter, const char **search_attr,
1679 LDAPMessage ** result)
1680 {
1681 return smbldap_search(ldap_state, lp_ldap_suffix(), LDAP_SCOPE_SUBTREE,
1682 filter, search_attr, 0, result);
1683 }
1684
1685 static void smbldap_idle_fn(struct event_context *event_ctx,
1686 struct timed_event *te,
1687 struct timeval now,
1688 void *private_data)
1689 {
1690 struct smbldap_state *state = (struct smbldap_state *)private_data;
1691
1692 TALLOC_FREE(state->idle_event);
1693
1694 if (state->ldap_struct == NULL) {
1695 DEBUG(10,("ldap connection not connected...\n"));
1696 return;
1697 }
1698
1699 if ((state->last_use+SMBLDAP_IDLE_TIME) > now.tv_sec) {
1700 DEBUG(10,("ldap connection not idle...\n"));
1701
1702 state->idle_event = event_add_timed(
1703 event_ctx, NULL,
1704 timeval_add(&now, SMBLDAP_IDLE_TIME, 0),
1705 smbldap_idle_fn,
1706 private_data);
1707 return;
1708 }
1709
1710 DEBUG(7,("ldap connection idle...closing connection\n"));
1711 smbldap_close(state);
1712 }
1713
1714 /**********************************************************************
1715 Housekeeping
1716 *********************************************************************/
1717
1718 void smbldap_free_struct(struct smbldap_state **ldap_state)
1719 {
1720 smbldap_close(*ldap_state);
1721
1722 if ((*ldap_state)->bind_secret) {
1723 memset((*ldap_state)->bind_secret, '\0', strlen((*ldap_state)->bind_secret));
1724 }
1725
1726 SAFE_FREE((*ldap_state)->bind_dn);
1727 SAFE_FREE((*ldap_state)->bind_secret);
1728
1729 TALLOC_FREE((*ldap_state)->idle_event);
1730
1731 *ldap_state = NULL;
1732
1733 /* No need to free any further, as it is talloc()ed */
1734 }
1735
1736
1737 /**********************************************************************
1738 Intitalise the 'general' ldap structures, on which ldap operations may be conducted
1739 *********************************************************************/
1740
1741 NTSTATUS smbldap_init(TALLOC_CTX *mem_ctx, struct event_context *event_ctx,
1742 const char *location,
1743 struct smbldap_state **smbldap_state)
1744 {
1745 *smbldap_state = TALLOC_ZERO_P(mem_ctx, struct smbldap_state);
1746 if (!*smbldap_state) {
1747 DEBUG(0, ("talloc() failed for ldapsam private_data!\n"));
1748 return NT_STATUS_NO_MEMORY;
1749 }
1750
1751 if (location) {
1752 (*smbldap_state)->uri = talloc_strdup(mem_ctx, location);
1753 } else {
1754 (*smbldap_state)->uri = "ldap://localhost";
1755 }
1756
1757 (*smbldap_state)->event_context = event_ctx;
1758
1759 return NT_STATUS_OK;
1760 }
1761
1762 char *smbldap_talloc_dn(TALLOC_CTX *mem_ctx, LDAP *ld,
1763 LDAPMessage *entry)
1764 {
1765 char *utf8_dn, *unix_dn;
1766 size_t converted_size;
1767
1768 utf8_dn = ldap_get_dn(ld, entry);
1769 if (!utf8_dn) {
1770 DEBUG (5, ("smbldap_talloc_dn: ldap_get_dn failed\n"));
1771 return NULL;
1772 }
1773 if (!pull_utf8_talloc(mem_ctx, &unix_dn, utf8_dn, &converted_size)) {
1774 DEBUG (0, ("smbldap_talloc_dn: String conversion failure utf8 "
1775 "[%s]\n", utf8_dn));
1776 return NULL;
1777 }
1778 ldap_memfree(utf8_dn);
1779 return unix_dn;
1780 }
1781
1782 /*******************************************************************
1783 Check if root-dse has a certain Control or Extension
1784 ********************************************************************/
1785
1786 static bool smbldap_check_root_dse(LDAP *ld, const char **attrs, const char *value)
1787 {
1788 LDAPMessage *msg = NULL;
1789 LDAPMessage *entry = NULL;
1790 char **values = NULL;
1791 int rc, num_result, num_values, i;
1792 bool result = False;
1793
1794 if (!attrs[0]) {
1795 DEBUG(3,("smbldap_check_root_dse: nothing to look for\n"));
1796 return False;
1797 }
1798
1799 if (!strequal(attrs[0], "supportedExtension") &&
1800 !strequal(attrs[0], "supportedControl") &&
1801 !strequal(attrs[0], "namingContexts")) {
1802 DEBUG(3,("smbldap_check_root_dse: no idea what to query root-dse for: %s ?\n", attrs[0]));
1803 return False;
1804 }
1805
1806 rc = ldap_search_s(ld, "", LDAP_SCOPE_BASE,
1807 "(objectclass=*)", CONST_DISCARD(char **, attrs), 0 , &msg);
1808
1809 if (rc != LDAP_SUCCESS) {
1810 DEBUG(3,("smbldap_check_root_dse: Could not search rootDSE\n"));
1811 return False;
1812 }
1813
1814 num_result = ldap_count_entries(ld, msg);
1815
1816 if (num_result != 1) {
1817 DEBUG(3,("smbldap_check_root_dse: Expected one rootDSE, got %d\n", num_result));
1818 goto done;
1819 }
1820
1821 entry = ldap_first_entry(ld, msg);
1822
1823 if (entry == NULL) {
1824 DEBUG(3,("smbldap_check_root_dse: Could not retrieve rootDSE\n"));
1825 goto done;
1826 }
1827
1828 values = ldap_get_values(ld, entry, attrs[0]);
1829
1830 if (values == NULL) {
1831 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not support any %s\n", attrs[0]));
1832 goto done;
1833 }
1834
1835 num_values = ldap_count_values(values);
1836
1837 if (num_values == 0) {
1838 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not have any %s\n", attrs[0]));
1839 goto done;
1840 }
1841
1842 for (i=0; i<num_values; i++) {
1843 if (strcmp(values[i], value) == 0)
1844 result = True;
1845 }
1846
1847
1848 done:
1849 if (values != NULL)
1850 ldap_value_free(values);
1851 if (msg != NULL)
1852 ldap_msgfree(msg);
1853
1854 return result;
1855
1856 }
1857
1858 /*******************************************************************
1859 Check if LDAP-Server supports a certain Control (OID in string format)
1860 ********************************************************************/
1861
1862 bool smbldap_has_control(LDAP *ld, const char *control)
1863 {
1864 const char *attrs[] = { "supportedControl", NULL };
1865 return smbldap_check_root_dse(ld, attrs, control);
1866 }
1867
1868 /*******************************************************************
1869 Check if LDAP-Server supports a certain Extension (OID in string format)
1870 ********************************************************************/
1871
1872 bool smbldap_has_extension(LDAP *ld, const char *extension)
1873 {
1874 const char *attrs[] = { "supportedExtension", NULL };
1875 return smbldap_check_root_dse(ld, attrs, extension);
1876 }
1877
1878 /*******************************************************************
1879 Check if LDAP-Server holds a given namingContext
1880 ********************************************************************/
1881
1882 bool smbldap_has_naming_context(LDAP *ld, const char *naming_context)
1883 {
1884 const char *attrs[] = { "namingContexts", NULL };
1885 return smbldap_check_root_dse(ld, attrs, naming_context);
1886 }
1887
1888 bool smbldap_set_creds(struct smbldap_state *ldap_state, bool anon, const char *dn, const char *secret)
1889 {
1890 ldap_state->anonymous = anon;
1891
1892 /* free any previously set credential */
1893
1894 SAFE_FREE(ldap_state->bind_dn);
1895 if (ldap_state->bind_secret) {
1896 /* make sure secrets are zeroed out of memory */
1897 memset(ldap_state->bind_secret, '\0', strlen(ldap_state->bind_secret));
1898 SAFE_FREE(ldap_state->bind_secret);
1899 }
1900
1901 if ( ! anon) {
1902 ldap_state->bind_dn = SMB_STRDUP(dn);
1903 ldap_state->bind_secret = SMB_STRDUP(secret);
1904 }
1905
1906 return True;
1907 }
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