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s3: Fix bug #9085.
[Samba.git] / source3 / lib / smbldap.c
blobc2ac343273750c7ed87cba624498d66004c01d0a
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_first_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
344 if (attribute == NULL) {
345 return NULL;
346 }
347
348 values = ldap_get_values(ldap_struct, entry, attribute);
349
350 if (values == NULL) {
351 DEBUG(10, ("attribute %s does not exist\n", attribute));
352 return NULL;
353 }
354
355 if (!pull_utf8_talloc(mem_ctx, &result, values[0], &converted_size)) {
356 DEBUG(10, ("pull_utf8_talloc failed\n"));
357 ldap_value_free(values);
358 return NULL;
359 }
360
361 ldap_value_free(values);
362
363 #ifdef DEBUG_PASSWORDS
364 DEBUG (100, ("smbldap_get_first_attribute: [%s] = [%s]\n",
365 attribute, result));
366 #endif
367 return result;
368 }
369
370 char * smbldap_talloc_smallest_attribute(LDAP *ldap_struct, LDAPMessage *entry,
371 const char *attribute,
372 TALLOC_CTX *mem_ctx)
373 {
374 char **values;
375 char *result;
376 size_t converted_size;
377 int i, num_values;
378
379 if (attribute == NULL) {
380 return NULL;
381 }
382
383 values = ldap_get_values(ldap_struct, entry, attribute);
384
385 if (values == NULL) {
386 DEBUG(10, ("attribute %s does not exist\n", attribute));
387 return NULL;
388 }
389
390 if (!pull_utf8_talloc(mem_ctx, &result, values[0], &converted_size)) {
391 DEBUG(10, ("pull_utf8_talloc failed\n"));
392 ldap_value_free(values);
393 return NULL;
394 }
395
396 num_values = ldap_count_values(values);
397
398 for (i=1; i<num_values; i++) {
399 char *tmp;
400
401 if (!pull_utf8_talloc(mem_ctx, &tmp, values[i],
402 &converted_size)) {
403 DEBUG(10, ("pull_utf8_talloc failed\n"));
404 TALLOC_FREE(result);
405 ldap_value_free(values);
406 return NULL;
407 }
408
409 if (StrCaseCmp(tmp, result) < 0) {
410 TALLOC_FREE(result);
411 result = tmp;
412 } else {
413 TALLOC_FREE(tmp);
414 }
415 }
416
417 ldap_value_free(values);
418
419 #ifdef DEBUG_PASSWORDS
420 DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n",
421 attribute, result));
422 #endif
423 return result;
424 }
425
426 bool smbldap_talloc_single_blob(TALLOC_CTX *mem_ctx, LDAP *ld,
427 LDAPMessage *msg, const char *attrib,
428 DATA_BLOB *blob)
429 {
430 struct berval **values;
431
432 values = ldap_get_values_len(ld, msg, attrib);
433 if (!values) {
434 return false;
435 }
436
437 if (ldap_count_values_len(values) != 1) {
438 DEBUG(10, ("Expected one value for %s, got %d\n", attrib,
439 ldap_count_values_len(values)));
440 return false;
441 }
442
443 *blob = data_blob_talloc(mem_ctx, values[0]->bv_val,
444 values[0]->bv_len);
445 ldap_value_free_len(values);
446
447 return (blob->data != NULL);
448 }
449
450 bool smbldap_pull_sid(LDAP *ld, LDAPMessage *msg, const char *attrib,
451 struct dom_sid *sid)
452 {
453 DATA_BLOB blob;
454 bool ret;
455
456 if (!smbldap_talloc_single_blob(talloc_tos(), ld, msg, attrib,
457 &blob)) {
458 return false;
459 }
460 ret = sid_parse((char *)blob.data, blob.length, sid);
461 TALLOC_FREE(blob.data);
462 return ret;
463 }
464
465 static int ldapmsg_destructor(LDAPMessage **result) {
466 ldap_msgfree(*result);
467 return 0;
468 }
469
470 void talloc_autofree_ldapmsg(TALLOC_CTX *mem_ctx, LDAPMessage *result)
471 {
472 LDAPMessage **handle;
473
474 if (result == NULL) {
475 return;
476 }
477
478 handle = TALLOC_P(mem_ctx, LDAPMessage *);
479 SMB_ASSERT(handle != NULL);
480
481 *handle = result;
482 talloc_set_destructor(handle, ldapmsg_destructor);
483 }
484
485 static int ldapmod_destructor(LDAPMod ***mod) {
486 ldap_mods_free(*mod, True);
487 return 0;
488 }
489
490 void talloc_autofree_ldapmod(TALLOC_CTX *mem_ctx, LDAPMod **mod)
491 {
492 LDAPMod ***handle;
493
494 if (mod == NULL) {
495 return;
496 }
497
498 handle = TALLOC_P(mem_ctx, LDAPMod **);
499 SMB_ASSERT(handle != NULL);
500
501 *handle = mod;
502 talloc_set_destructor(handle, ldapmod_destructor);
503 }
504
505 /************************************************************************
506 Routine to manage the LDAPMod structure array
507 manage memory used by the array, by each struct, and values
508 ***********************************************************************/
509
510 void smbldap_set_mod (LDAPMod *** modlist, int modop, const char *attribute, const char *value)
511 {
512 LDAPMod **mods;
513 int i;
514 int j;
515
516 mods = *modlist;
517
518 /* sanity checks on the mod values */
519
520 if (attribute == NULL || *attribute == '\0') {
521 return;
522 }
523
524 #if 0 /* commented out after discussion with abartlet. Do not reenable.
525 left here so other do not re-add similar code --jerry */
526 if (value == NULL || *value == '\0')
527 return;
528 #endif
529
530 if (mods == NULL) {
531 mods = SMB_MALLOC_P(LDAPMod *);
532 if (mods == NULL) {
533 smb_panic("smbldap_set_mod: out of memory!");
534 /* notreached. */
535 }
536 mods[0] = NULL;
537 }
538
539 for (i = 0; mods[i] != NULL; ++i) {
540 if (mods[i]->mod_op == modop && strequal(mods[i]->mod_type, attribute))
541 break;
542 }
543
544 if (mods[i] == NULL) {
545 mods = SMB_REALLOC_ARRAY (mods, LDAPMod *, i + 2);
546 if (mods == NULL) {
547 smb_panic("smbldap_set_mod: out of memory!");
548 /* notreached. */
549 }
550 mods[i] = SMB_MALLOC_P(LDAPMod);
551 if (mods[i] == NULL) {
552 smb_panic("smbldap_set_mod: out of memory!");
553 /* notreached. */
554 }
555 mods[i]->mod_op = modop;
556 mods[i]->mod_values = NULL;
557 mods[i]->mod_type = SMB_STRDUP(attribute);
558 mods[i + 1] = NULL;
559 }
560
561 if (value != NULL) {
562 char *utf8_value = NULL;
563 size_t converted_size;
564
565 j = 0;
566 if (mods[i]->mod_values != NULL) {
567 for (; mods[i]->mod_values[j] != NULL; j++);
568 }
569 mods[i]->mod_values = SMB_REALLOC_ARRAY(mods[i]->mod_values, char *, j + 2);
570
571 if (mods[i]->mod_values == NULL) {
572 smb_panic("smbldap_set_mod: out of memory!");
573 /* notreached. */
574 }
575
576 if (!push_utf8_talloc(talloc_tos(), &utf8_value, value, &converted_size)) {
577 smb_panic("smbldap_set_mod: String conversion failure!");
578 /* notreached. */
579 }
580
581 mods[i]->mod_values[j] = SMB_STRDUP(utf8_value);
582 TALLOC_FREE(utf8_value);
583 SMB_ASSERT(mods[i]->mod_values[j] != NULL);
584
585 mods[i]->mod_values[j + 1] = NULL;
586 }
587 *modlist = mods;
588 }
589
590 /**********************************************************************
591 Set attribute to newval in LDAP, regardless of what value the
592 attribute had in LDAP before.
593 *********************************************************************/
594
595 void smbldap_make_mod(LDAP *ldap_struct, LDAPMessage *existing,
596 LDAPMod ***mods,
597 const char *attribute, const char *newval)
598 {
599 char oldval[2048]; /* current largest allowed value is mungeddial */
600 bool existed;
601
602 if (attribute == NULL) {
603 /* This can actually happen for ldapsam_compat where we for
604 * example don't have a password history */
605 return;
606 }
607
608 if (existing != NULL) {
609 existed = smbldap_get_single_attribute(ldap_struct, existing, attribute, oldval, sizeof(oldval));
610 } else {
611 existed = False;
612 *oldval = '\0';
613 }
614
615 /* all of our string attributes are case insensitive */
616
617 if (existed && newval && (StrCaseCmp(oldval, newval) == 0)) {
618
619 /* Believe it or not, but LDAP will deny a delete and
620 an add at the same time if the values are the
621 same... */
622 DEBUG(10,("smbldap_make_mod: attribute |%s| not changed.\n", attribute));
623 return;
624 }
625
626 if (existed) {
627 /* There has been no value before, so don't delete it.
628 * Here's a possible race: We might end up with
629 * duplicate attributes */
630 /* By deleting exactly the value we found in the entry this
631 * should be race-free in the sense that the LDAP-Server will
632 * deny the complete operation if somebody changed the
633 * attribute behind our back. */
634 /* This will also allow modifying single valued attributes
635 * in Novell NDS. In NDS you have to first remove attribute and then
636 * you could add new value */
637
638 DEBUG(10,("smbldap_make_mod: deleting attribute |%s| values |%s|\n", attribute, oldval));
639 smbldap_set_mod(mods, LDAP_MOD_DELETE, attribute, oldval);
640 }
641
642 /* Regardless of the real operation (add or modify)
643 we add the new value here. We rely on deleting
644 the old value, should it exist. */
645
646 if ((newval != NULL) && (strlen(newval) > 0)) {
647 DEBUG(10,("smbldap_make_mod: adding attribute |%s| value |%s|\n", attribute, newval));
648 smbldap_set_mod(mods, LDAP_MOD_ADD, attribute, newval);
649 }
650 }
651
652 /**********************************************************************
653 Some varients of the LDAP rebind code do not pass in the third 'arg'
654 pointer to a void*, so we try and work around it by assuming that the
655 value of the 'LDAP *' pointer is the same as the one we had passed in
656 **********************************************************************/
657
658 struct smbldap_state_lookup {
659 LDAP *ld;
660 struct smbldap_state *smbldap_state;
661 struct smbldap_state_lookup *prev, *next;
662 };
663
664 static struct smbldap_state_lookup *smbldap_state_lookup_list;
665
666 static struct smbldap_state *smbldap_find_state(LDAP *ld)
667 {
668 struct smbldap_state_lookup *t;
669
670 for (t = smbldap_state_lookup_list; t; t = t->next) {
671 if (t->ld == ld) {
672 return t->smbldap_state;
673 }
674 }
675 return NULL;
676 }
677
678 static void smbldap_delete_state(struct smbldap_state *smbldap_state)
679 {
680 struct smbldap_state_lookup *t;
681
682 for (t = smbldap_state_lookup_list; t; t = t->next) {
683 if (t->smbldap_state == smbldap_state) {
684 DLIST_REMOVE(smbldap_state_lookup_list, t);
685 SAFE_FREE(t);
686 return;
687 }
688 }
689 }
690
691 static void smbldap_store_state(LDAP *ld, struct smbldap_state *smbldap_state)
692 {
693 struct smbldap_state *tmp_ldap_state;
694 struct smbldap_state_lookup *t;
695
696 if ((tmp_ldap_state = smbldap_find_state(ld))) {
697 SMB_ASSERT(tmp_ldap_state == smbldap_state);
698 return;
699 }
700
701 t = SMB_XMALLOC_P(struct smbldap_state_lookup);
702 ZERO_STRUCTP(t);
703
704 DLIST_ADD_END(smbldap_state_lookup_list, t, struct smbldap_state_lookup *);
705 t->ld = ld;
706 t->smbldap_state = smbldap_state;
707 }
708
709 /********************************************************************
710 start TLS on an existing LDAP connection
711 *******************************************************************/
712
713 int smb_ldap_start_tls(LDAP *ldap_struct, int version)
714 {
715 #ifdef LDAP_OPT_X_TLS
716 int rc;
717 #endif
718
719 if (lp_ldap_ssl() != LDAP_SSL_START_TLS) {
720 return LDAP_SUCCESS;
721 }
722
723 #ifdef LDAP_OPT_X_TLS
724 if (version != LDAP_VERSION3) {
725 DEBUG(0, ("Need LDAPv3 for Start TLS\n"));
726 return LDAP_OPERATIONS_ERROR;
727 }
728
729 if ((rc = ldap_start_tls_s (ldap_struct, NULL, NULL)) != LDAP_SUCCESS) {
730 DEBUG(0,("Failed to issue the StartTLS instruction: %s\n",
731 ldap_err2string(rc)));
732 return rc;
733 }
734
735 DEBUG (3, ("StartTLS issued: using a TLS connection\n"));
736 return LDAP_SUCCESS;
737 #else
738 DEBUG(0,("StartTLS not supported by LDAP client libraries!\n"));
739 return LDAP_OPERATIONS_ERROR;
740 #endif
741 }
742
743 /********************************************************************
744 setup a connection to the LDAP server based on a uri
745 *******************************************************************/
746
747 int smb_ldap_setup_conn(LDAP **ldap_struct, const char *uri)
748 {
749 int rc;
750
751 DEBUG(10, ("smb_ldap_setup_connection: %s\n", uri));
752
753 #ifdef HAVE_LDAP_INITIALIZE
754
755 rc = ldap_initialize(ldap_struct, uri);
756 if (rc) {
757 DEBUG(0, ("ldap_initialize: %s\n", ldap_err2string(rc)));
758 return rc;
759 }
760
761 if (lp_ldap_follow_referral() != Auto) {
762 rc = ldap_set_option(*ldap_struct, LDAP_OPT_REFERRALS,
763 lp_ldap_follow_referral() ? LDAP_OPT_ON : LDAP_OPT_OFF);
764 if (rc != LDAP_SUCCESS)
765 DEBUG(0, ("Failed to set LDAP_OPT_REFERRALS: %s\n",
766 ldap_err2string(rc)));
767 }
768
769 return LDAP_SUCCESS;
770 #else
771
772 /* Parse the string manually */
773
774 {
775 int port = 0;
776 fstring protocol;
777 fstring host;
778 SMB_ASSERT(sizeof(protocol)>10 && sizeof(host)>254);
779
780
781 /* skip leading "URL:" (if any) */
782 if ( strnequal( uri, "URL:", 4 ) ) {
783 uri += 4;
784 }
785
786 sscanf(uri, "%10[^:]://%254[^:/]:%d", protocol, host, &port);
787
788 if (port == 0) {
789 if (strequal(protocol, "ldap")) {
790 port = LDAP_PORT;
791 } else if (strequal(protocol, "ldaps")) {
792 port = LDAPS_PORT;
793 } else {
794 DEBUG(0, ("unrecognised protocol (%s)!\n", protocol));
795 }
796 }
797
798 if ((*ldap_struct = ldap_init(host, port)) == NULL) {
799 DEBUG(0, ("ldap_init failed !\n"));
800 return LDAP_OPERATIONS_ERROR;
801 }
802
803 if (strequal(protocol, "ldaps")) {
804 #ifdef LDAP_OPT_X_TLS
805 int tls = LDAP_OPT_X_TLS_HARD;
806 if (ldap_set_option (*ldap_struct, LDAP_OPT_X_TLS, &tls) != LDAP_SUCCESS)
807 {
808 DEBUG(0, ("Failed to setup a TLS session\n"));
809 }
810
811 DEBUG(3,("LDAPS option set...!\n"));
812 #else
813 DEBUG(0,("smbldap_open_connection: Secure connection not supported by LDAP client libraries!\n"));
814 return LDAP_OPERATIONS_ERROR;
815 #endif /* LDAP_OPT_X_TLS */
816 }
817 }
818 #endif /* HAVE_LDAP_INITIALIZE */
819
820 /* now set connection timeout */
821 #ifdef LDAP_X_OPT_CONNECT_TIMEOUT /* Netscape */
822 {
823 int ct = lp_ldap_connection_timeout()*1000;
824 rc = ldap_set_option(*ldap_struct, LDAP_X_OPT_CONNECT_TIMEOUT, &ct);
825 if (rc != LDAP_SUCCESS) {
826 DEBUG(0,("Failed to setup an ldap connection timeout %d: %s\n",
827 ct, ldap_err2string(rc)));
828 }
829 }
830 #elif defined (LDAP_OPT_NETWORK_TIMEOUT) /* OpenLDAP */
831 {
832 struct timeval ct;
833 ct.tv_usec = 0;
834 ct.tv_sec = lp_ldap_connection_timeout();
835 rc = ldap_set_option(*ldap_struct, LDAP_OPT_NETWORK_TIMEOUT, &ct);
836 if (rc != LDAP_SUCCESS) {
837 DEBUG(0,("Failed to setup an ldap connection timeout %d: %s\n",
838 (int)ct.tv_sec, ldap_err2string(rc)));
839 }
840 }
841 #endif
842
843 return LDAP_SUCCESS;
844 }
845
846 /********************************************************************
847 try to upgrade to Version 3 LDAP if not already, in either case return current
848 version
849 *******************************************************************/
850
851 int smb_ldap_upgrade_conn(LDAP *ldap_struct, int *new_version)
852 {
853 int version;
854 int rc;
855
856 /* assume the worst */
857 *new_version = LDAP_VERSION2;
858
859 rc = ldap_get_option(ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
860 if (rc) {
861 return rc;
862 }
863
864 if (version == LDAP_VERSION3) {
865 *new_version = LDAP_VERSION3;
866 return LDAP_SUCCESS;
867 }
868
869 /* try upgrade */
870 version = LDAP_VERSION3;
871 rc = ldap_set_option (ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
872 if (rc) {
873 return rc;
874 }
875
876 *new_version = LDAP_VERSION3;
877 return LDAP_SUCCESS;
878 }
879
880 /*******************************************************************
881 open a connection to the ldap server (just until the bind)
882 ******************************************************************/
883
884 int smb_ldap_setup_full_conn(LDAP **ldap_struct, const char *uri)
885 {
886 int rc, version;
887
888 rc = smb_ldap_setup_conn(ldap_struct, uri);
889 if (rc) {
890 return rc;
891 }
892
893 rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
894 if (rc) {
895 return rc;
896 }
897
898 rc = smb_ldap_start_tls(*ldap_struct, version);
899 if (rc) {
900 return rc;
901 }
902
903 return LDAP_SUCCESS;
904 }
905
906 /*******************************************************************
907 open a connection to the ldap server.
908 ******************************************************************/
909 static int smbldap_open_connection (struct smbldap_state *ldap_state)
910
911 {
912 int rc = LDAP_SUCCESS;
913 int version;
914 int deref;
915 LDAP **ldap_struct = &ldap_state->ldap_struct;
916
917 rc = smb_ldap_setup_conn(ldap_struct, ldap_state->uri);
918 if (rc) {
919 return rc;
920 }
921
922 /* Store the LDAP pointer in a lookup list */
923
924 smbldap_store_state(*ldap_struct, ldap_state);
925
926 /* Upgrade to LDAPv3 if possible */
927
928 rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
929 if (rc) {
930 return rc;
931 }
932
933 /* Start TLS if required */
934
935 rc = smb_ldap_start_tls(*ldap_struct, version);
936 if (rc) {
937 return rc;
938 }
939
940 /* Set alias dereferencing method */
941 deref = lp_ldap_deref();
942 if (deref != -1) {
943 if (ldap_set_option (*ldap_struct, LDAP_OPT_DEREF, &deref) != LDAP_OPT_SUCCESS) {
944 DEBUG(1,("smbldap_open_connection: Failed to set dereferencing method: %d\n", deref));
945 } else {
946 DEBUG(5,("Set dereferencing method: %d\n", deref));
947 }
948 }
949
950 DEBUG(2, ("smbldap_open_connection: connection opened\n"));
951 return rc;
952 }
953
954 /*******************************************************************
955 a rebind function for authenticated referrals
956 This version takes a void* that we can shove useful stuff in :-)
957 ******************************************************************/
958 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
959 #else
960 static int rebindproc_with_state (LDAP * ld, char **whop, char **credp,
961 int *methodp, int freeit, void *arg)
962 {
963 struct smbldap_state *ldap_state = arg;
964
965 /** @TODO Should we be doing something to check what servers we rebind to?
966 Could we get a referral to a machine that we don't want to give our
967 username and password to? */
968
969 if (freeit) {
970 SAFE_FREE(*whop);
971 if (*credp) {
972 memset(*credp, '\0', strlen(*credp));
973 }
974 SAFE_FREE(*credp);
975 } else {
976 DEBUG(5,("rebind_proc_with_state: Rebinding as \"%s\"\n",
977 ldap_state->bind_dn?ldap_state->bind_dn:"[Anonymous bind]"));
978
979 if (ldap_state->anonymous) {
980 *whop = NULL;
981 *credp = NULL;
982 } else {
983 *whop = SMB_STRDUP(ldap_state->bind_dn);
984 if (!*whop) {
985 return LDAP_NO_MEMORY;
986 }
987 *credp = SMB_STRDUP(ldap_state->bind_secret);
988 if (!*credp) {
989 SAFE_FREE(*whop);
990 return LDAP_NO_MEMORY;
991 }
992 }
993 *methodp = LDAP_AUTH_SIMPLE;
994 }
995
996 GetTimeOfDay(&ldap_state->last_rebind);
997
998 return 0;
999 }
1000 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1001
1002 /*******************************************************************
1003 a rebind function for authenticated referrals
1004 This version takes a void* that we can shove useful stuff in :-)
1005 and actually does the connection.
1006 ******************************************************************/
1007 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
1008 static int rebindproc_connect_with_state (LDAP *ldap_struct,
1009 LDAP_CONST char *url,
1010 ber_tag_t request,
1011 ber_int_t msgid, void *arg)
1012 {
1013 struct smbldap_state *ldap_state =
1014 (struct smbldap_state *)arg;
1015 int rc;
1016 int version;
1017
1018 DEBUG(5,("rebindproc_connect_with_state: Rebinding to %s as \"%s\"\n",
1019 url, ldap_state->bind_dn?ldap_state->bind_dn:"[Anonymous bind]"));
1020
1021 /* call START_TLS again (ldaps:// is handled by the OpenLDAP library
1022 * itself) before rebinding to another LDAP server to avoid to expose
1023 * our credentials. At least *try* to secure the connection - Guenther */
1024
1025 smb_ldap_upgrade_conn(ldap_struct, &version);
1026 smb_ldap_start_tls(ldap_struct, version);
1027
1028 /** @TODO Should we be doing something to check what servers we rebind to?
1029 Could we get a referral to a machine that we don't want to give our
1030 username and password to? */
1031
1032 rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
1033
1034 /* only set the last rebind timestamp when we did rebind after a
1035 * non-read LDAP operation. That way we avoid the replication sleep
1036 * after a simple redirected search operation - Guenther */
1037
1038 switch (request) {
1039
1040 case LDAP_REQ_MODIFY:
1041 case LDAP_REQ_ADD:
1042 case LDAP_REQ_DELETE:
1043 case LDAP_REQ_MODDN:
1044 case LDAP_REQ_EXTENDED:
1045 DEBUG(10,("rebindproc_connect_with_state: "
1046 "setting last_rebind timestamp "
1047 "(req: 0x%02x)\n", (unsigned int)request));
1048 GetTimeOfDay(&ldap_state->last_rebind);
1049 break;
1050 default:
1051 ZERO_STRUCT(ldap_state->last_rebind);
1052 break;
1053 }
1054
1055 return rc;
1056 }
1057 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1058
1059 /*******************************************************************
1060 Add a rebind function for authenticated referrals
1061 ******************************************************************/
1062 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
1063 #else
1064 # if LDAP_SET_REBIND_PROC_ARGS == 2
1065 static int rebindproc (LDAP *ldap_struct, char **whop, char **credp,
1066 int *method, int freeit )
1067 {
1068 struct smbldap_state *ldap_state = smbldap_find_state(ldap_struct);
1069
1070 return rebindproc_with_state(ldap_struct, whop, credp,
1071 method, freeit, ldap_state);
1072 }
1073 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
1074 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1075
1076 /*******************************************************************
1077 a rebind function for authenticated referrals
1078 this also does the connection, but no void*.
1079 ******************************************************************/
1080 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
1081 # if LDAP_SET_REBIND_PROC_ARGS == 2
1082 static int rebindproc_connect (LDAP * ld, LDAP_CONST char *url, int request,
1083 ber_int_t msgid)
1084 {
1085 struct smbldap_state *ldap_state = smbldap_find_state(ld);
1086
1087 return rebindproc_connect_with_state(ld, url, (ber_tag_t)request, msgid,
1088 ldap_state);
1089 }
1090 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
1091 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1092
1093 /*******************************************************************
1094 connect to the ldap server under system privilege.
1095 ******************************************************************/
1096 static int smbldap_connect_system(struct smbldap_state *ldap_state)
1097 {
1098 LDAP *ldap_struct = ldap_state->ldap_struct;
1099 int rc;
1100 int version;
1101
1102 if (!ldap_state->anonymous && !ldap_state->bind_dn) {
1103 char *bind_dn = NULL;
1104 char *bind_secret = NULL;
1105
1106 /* get the default dn and password only if they are not set already */
1107 if (!fetch_ldap_pw(&bind_dn, &bind_secret)) {
1108 DEBUG(0, ("ldap_connect_system: Failed to retrieve password from secrets.tdb\n"));
1109 rc = LDAP_INVALID_CREDENTIALS;
1110 goto done;
1111 }
1112 smbldap_set_creds(ldap_state, false, bind_dn, bind_secret);
1113 SAFE_FREE(bind_dn);
1114 memset(bind_secret, '\0', strlen(bind_secret));
1115 SAFE_FREE(bind_secret);
1116 }
1117
1118 /* removed the sasl_bind_s "EXTERNAL" stuff, as my testsuite
1119 (OpenLDAP) doesnt' seem to support it */
1120
1121 DEBUG(10,("ldap_connect_system: Binding to ldap server %s as \"%s\"\n",
1122 ldap_state->uri, ldap_state->bind_dn));
1123
1124 #ifdef HAVE_LDAP_SET_REBIND_PROC
1125 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
1126 # if LDAP_SET_REBIND_PROC_ARGS == 2
1127 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect);
1128 # endif
1129 # if LDAP_SET_REBIND_PROC_ARGS == 3
1130 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect_with_state, (void *)ldap_state);
1131 # endif
1132 #else /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1133 # if LDAP_SET_REBIND_PROC_ARGS == 2
1134 ldap_set_rebind_proc(ldap_struct, &rebindproc);
1135 # endif
1136 # if LDAP_SET_REBIND_PROC_ARGS == 3
1137 ldap_set_rebind_proc(ldap_struct, &rebindproc_with_state, (void *)ldap_state);
1138 # endif
1139 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1140 #endif
1141
1142 rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
1143
1144 if (rc != LDAP_SUCCESS) {
1145 char *ld_error = NULL;
1146 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
1147 &ld_error);
1148 DEBUG(ldap_state->num_failures ? 2 : 0,
1149 ("failed to bind to server %s with dn=\"%s\" Error: %s\n\t%s\n",
1150 ldap_state->uri,
1151 ldap_state->bind_dn ? ldap_state->bind_dn : "[Anonymous bind]",
1152 ldap_err2string(rc),
1153 ld_error ? ld_error : "(unknown)"));
1154 SAFE_FREE(ld_error);
1155 ldap_state->num_failures++;
1156 goto done;
1157 }
1158
1159 ldap_state->num_failures = 0;
1160 ldap_state->paged_results = False;
1161
1162 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
1163
1164 if (smbldap_has_control(ldap_state->ldap_struct, ADS_PAGE_CTL_OID) && version == 3) {
1165 ldap_state->paged_results = True;
1166 }
1167
1168 DEBUG(3, ("ldap_connect_system: successful connection to the LDAP server\n"));
1169 DEBUGADD(10, ("ldap_connect_system: LDAP server %s support paged results\n",
1170 ldap_state->paged_results ? "does" : "does not"));
1171 done:
1172 if (rc != 0) {
1173 ldap_unbind(ldap_struct);
1174 ldap_state->ldap_struct = NULL;
1175 }
1176 return rc;
1177 }
1178
1179 static void smbldap_idle_fn(struct event_context *event_ctx,
1180 struct timed_event *te,
1181 struct timeval now,
1182 void *private_data);
1183
1184 /**********************************************************************
1185 Connect to LDAP server (called before every ldap operation)
1186 *********************************************************************/
1187 static int smbldap_open(struct smbldap_state *ldap_state)
1188 {
1189 int rc, opt_rc;
1190 bool reopen = False;
1191 SMB_ASSERT(ldap_state);
1192
1193 if ((ldap_state->ldap_struct != NULL) && ((ldap_state->last_ping + SMBLDAP_DONT_PING_TIME) < time(NULL))) {
1194
1195 #ifdef HAVE_UNIXSOCKET
1196 struct sockaddr_un addr;
1197 #else
1198 struct sockaddr addr;
1199 #endif
1200 socklen_t len = sizeof(addr);
1201 int sd;
1202
1203 opt_rc = ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_DESC, &sd);
1204 if (opt_rc == 0 && (getpeername(sd, (struct sockaddr *) &addr, &len)) < 0 )
1205 reopen = True;
1206
1207 #ifdef HAVE_UNIXSOCKET
1208 if (opt_rc == 0 && addr.sun_family == AF_UNIX)
1209 reopen = True;
1210 #endif
1211 if (reopen) {
1212 /* the other end has died. reopen. */
1213 ldap_unbind(ldap_state->ldap_struct);
1214 ldap_state->ldap_struct = NULL;
1215 ldap_state->last_ping = (time_t)0;
1216 } else {
1217 ldap_state->last_ping = time(NULL);
1218 }
1219 }
1220
1221 if (ldap_state->ldap_struct != NULL) {
1222 DEBUG(11,("smbldap_open: already connected to the LDAP server\n"));
1223 return LDAP_SUCCESS;
1224 }
1225
1226 if ((rc = smbldap_open_connection(ldap_state))) {
1227 return rc;
1228 }
1229
1230 if ((rc = smbldap_connect_system(ldap_state))) {
1231 return rc;
1232 }
1233
1234
1235 ldap_state->last_ping = time(NULL);
1236 ldap_state->pid = sys_getpid();
1237
1238 TALLOC_FREE(ldap_state->idle_event);
1239
1240 if (ldap_state->event_context != NULL) {
1241 ldap_state->idle_event = event_add_timed(
1242 ldap_state->event_context, ldap_state,
1243 timeval_current_ofs(SMBLDAP_IDLE_TIME, 0),
1244 smbldap_idle_fn, ldap_state);
1245 }
1246
1247 DEBUG(4,("The LDAP server is successfully connected\n"));
1248
1249 return LDAP_SUCCESS;
1250 }
1251
1252 /**********************************************************************
1253 Disconnect from LDAP server
1254 *********************************************************************/
1255 static NTSTATUS smbldap_close(struct smbldap_state *ldap_state)
1256 {
1257 if (!ldap_state)
1258 return NT_STATUS_INVALID_PARAMETER;
1259
1260 if (ldap_state->ldap_struct != NULL) {
1261 ldap_unbind(ldap_state->ldap_struct);
1262 ldap_state->ldap_struct = NULL;
1263 }
1264
1265 smbldap_delete_state(ldap_state);
1266
1267 TALLOC_FREE(ldap_state->idle_event);
1268
1269 DEBUG(5,("The connection to the LDAP server was closed\n"));
1270 /* maybe free the results here --metze */
1271
1272 return NT_STATUS_OK;
1273 }
1274
1275 static bool got_alarm;
1276
1277 static void (*old_handler)(int);
1278
1279 static void gotalarm_sig(int dummy)
1280 {
1281 got_alarm = True;
1282 }
1283
1284 static int another_ldap_try(struct smbldap_state *ldap_state, int *rc,
1285 int *attempts, time_t endtime)
1286 {
1287 time_t now = time(NULL);
1288 int open_rc = LDAP_SERVER_DOWN;
1289
1290 if (*rc != LDAP_SERVER_DOWN)
1291 goto no_next;
1292
1293 if (now >= endtime) {
1294 smbldap_close(ldap_state);
1295 *rc = LDAP_TIMEOUT;
1296 goto no_next;
1297 }
1298
1299 if (*attempts == 0) {
1300 got_alarm = False;
1301 old_handler = CatchSignal(SIGALRM, gotalarm_sig);
1302 alarm(endtime - now);
1303
1304 if (ldap_state->pid != sys_getpid())
1305 smbldap_close(ldap_state);
1306 }
1307
1308 while (1) {
1309
1310 if (*attempts != 0)
1311 smb_msleep(1000);
1312
1313 *attempts += 1;
1314
1315 open_rc = smbldap_open(ldap_state);
1316
1317 if (open_rc == LDAP_SUCCESS) {
1318 ldap_state->last_use = now;
1319 return True;
1320 }
1321
1322 if (open_rc == LDAP_INSUFFICIENT_ACCESS) {
1323 /* The fact that we are non-root or any other
1324 * access-denied condition will not change in the next
1325 * round of trying */
1326 *rc = open_rc;
1327 break;
1328 }
1329
1330 if (got_alarm) {
1331 *rc = LDAP_TIMEOUT;
1332 break;
1333 }
1334
1335 if (open_rc != LDAP_SUCCESS) {
1336 DEBUG(1, ("Connection to LDAP server failed for the "
1337 "%d try!\n", *attempts));
1338 }
1339 }
1340
1341 no_next:
1342 CatchSignal(SIGALRM, old_handler);
1343 alarm(0);
1344 ldap_state->last_use = now;
1345 return False;
1346 }
1347
1348 /*********************************************************************
1349 ********************************************************************/
1350
1351 static int smbldap_search_ext(struct smbldap_state *ldap_state,
1352 const char *base, int scope, const char *filter,
1353 const char *attrs[], int attrsonly,
1354 LDAPControl **sctrls, LDAPControl **cctrls,
1355 int sizelimit, LDAPMessage **res)
1356 {
1357 int rc = LDAP_SERVER_DOWN;
1358 int attempts = 0;
1359 char *utf8_filter;
1360 time_t endtime = time(NULL)+lp_ldap_timeout();
1361 struct timeval timeout;
1362 size_t converted_size;
1363
1364 SMB_ASSERT(ldap_state);
1365
1366 DEBUG(5,("smbldap_search_ext: base => [%s], filter => [%s], "
1367 "scope => [%d]\n", base, filter, scope));
1368
1369 if (ldap_state->last_rebind.tv_sec > 0) {
1370 struct timeval tval;
1371 int64_t tdiff = 0;
1372 int sleep_time = 0;
1373
1374 ZERO_STRUCT(tval);
1375 GetTimeOfDay(&tval);
1376
1377 tdiff = usec_time_diff(&tval, &ldap_state->last_rebind);
1378 tdiff /= 1000; /* Convert to milliseconds. */
1379
1380 sleep_time = lp_ldap_replication_sleep()-(int)tdiff;
1381 sleep_time = MIN(sleep_time, MAX_LDAP_REPLICATION_SLEEP_TIME);
1382
1383 if (sleep_time > 0) {
1384 /* we wait for the LDAP replication */
1385 DEBUG(5,("smbldap_search_ext: waiting %d milliseconds "
1386 "for LDAP replication.\n",sleep_time));
1387 smb_msleep(sleep_time);
1388 DEBUG(5,("smbldap_search_ext: go on!\n"));
1389 }
1390 ZERO_STRUCT(ldap_state->last_rebind);
1391 }
1392
1393 if (!push_utf8_talloc(talloc_tos(), &utf8_filter, filter, &converted_size)) {
1394 return LDAP_NO_MEMORY;
1395 }
1396
1397 /* Setup timeout for the ldap_search_ext_s call - local and remote. */
1398 timeout.tv_sec = lp_ldap_timeout();
1399 timeout.tv_usec = 0;
1400
1401 /* Setup alarm timeout.... Do we need both of these ? JRA.
1402 * Yes, I think we do need both of these. The server timeout only
1403 * covers the case where the server's operation takes too long. It
1404 * does not cover the case where the request hangs on its way to the
1405 * server. The server side timeout is not strictly necessary, it's
1406 * just a bit more kind to the server. VL. */
1407
1408 got_alarm = 0;
1409 CatchSignal(SIGALRM, SIGNAL_CAST gotalarm_sig);
1410 alarm(lp_ldap_timeout());
1411 /* End setup timeout. */
1412
1413 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1414 rc = ldap_search_ext_s(ldap_state->ldap_struct, base, scope,
1415 utf8_filter,
1416 CONST_DISCARD(char **, attrs),
1417 attrsonly, sctrls, cctrls, &timeout,
1418 sizelimit, res);
1419 if (rc != LDAP_SUCCESS) {
1420 char *ld_error = NULL;
1421 int ld_errno;
1422
1423 ldap_get_option(ldap_state->ldap_struct,
1424 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1425
1426 ldap_get_option(ldap_state->ldap_struct,
1427 LDAP_OPT_ERROR_STRING, &ld_error);
1428 DEBUG(10, ("Failed search for base: %s, error: %d (%s) "
1429 "(%s)\n", base, ld_errno,
1430 ldap_err2string(rc),
1431 ld_error ? ld_error : "unknown"));
1432 SAFE_FREE(ld_error);
1433
1434 if (ld_errno == LDAP_SERVER_DOWN) {
1435 ldap_unbind(ldap_state->ldap_struct);
1436 ldap_state->ldap_struct = NULL;
1437 }
1438 }
1439 }
1440
1441 TALLOC_FREE(utf8_filter);
1442
1443 /* Teardown timeout. */
1444 CatchSignal(SIGALRM, SIGNAL_CAST SIG_IGN);
1445 alarm(0);
1446
1447 if (got_alarm != 0)
1448 return LDAP_TIMELIMIT_EXCEEDED;
1449
1450 return rc;
1451 }
1452
1453 int smbldap_search(struct smbldap_state *ldap_state,
1454 const char *base, int scope, const char *filter,
1455 const char *attrs[], int attrsonly,
1456 LDAPMessage **res)
1457 {
1458 return smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1459 attrsonly, NULL, NULL, LDAP_NO_LIMIT, res);
1460 }
1461
1462 int smbldap_search_paged(struct smbldap_state *ldap_state,
1463 const char *base, int scope, const char *filter,
1464 const char **attrs, int attrsonly, int pagesize,
1465 LDAPMessage **res, void **cookie)
1466 {
1467 LDAPControl pr;
1468 LDAPControl **rcontrols;
1469 LDAPControl *controls[2] = { NULL, NULL};
1470 BerElement *cookie_be = NULL;
1471 struct berval *cookie_bv = NULL;
1472 int tmp = 0, i, rc;
1473 bool critical = True;
1474
1475 *res = NULL;
1476
1477 DEBUG(3,("smbldap_search_paged: base => [%s], filter => [%s],"
1478 "scope => [%d], pagesize => [%d]\n",
1479 base, filter, scope, pagesize));
1480
1481 cookie_be = ber_alloc_t(LBER_USE_DER);
1482 if (cookie_be == NULL) {
1483 DEBUG(0,("smbldap_create_page_control: ber_alloc_t returns "
1484 "NULL\n"));
1485 return LDAP_NO_MEMORY;
1486 }
1487
1488 /* construct cookie */
1489 if (*cookie != NULL) {
1490 ber_printf(cookie_be, "{iO}", (ber_int_t) pagesize, *cookie);
1491 ber_bvfree((struct berval *)*cookie); /* don't need it from last time */
1492 *cookie = NULL;
1493 } else {
1494 ber_printf(cookie_be, "{io}", (ber_int_t) pagesize, "", 0);
1495 }
1496 ber_flatten(cookie_be, &cookie_bv);
1497
1498 pr.ldctl_oid = CONST_DISCARD(char *, ADS_PAGE_CTL_OID);
1499 pr.ldctl_iscritical = (char) critical;
1500 pr.ldctl_value.bv_len = cookie_bv->bv_len;
1501 pr.ldctl_value.bv_val = cookie_bv->bv_val;
1502
1503 controls[0] = &pr;
1504 controls[1] = NULL;
1505
1506 rc = smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1507 0, controls, NULL, LDAP_NO_LIMIT, res);
1508
1509 ber_free(cookie_be, 1);
1510 ber_bvfree(cookie_bv);
1511
1512 if (rc != 0) {
1513 DEBUG(3,("smbldap_search_paged: smbldap_search_ext(%s) "
1514 "failed with [%s]\n", filter, ldap_err2string(rc)));
1515 goto done;
1516 }
1517
1518 DEBUG(3,("smbldap_search_paged: search was successful\n"));
1519
1520 rc = ldap_parse_result(ldap_state->ldap_struct, *res, NULL, NULL,
1521 NULL, NULL, &rcontrols, 0);
1522 if (rc != 0) {
1523 DEBUG(3,("smbldap_search_paged: ldap_parse_result failed " \
1524 "with [%s]\n", ldap_err2string(rc)));
1525 goto done;
1526 }
1527
1528 if (rcontrols == NULL)
1529 goto done;
1530
1531 for (i=0; rcontrols[i]; i++) {
1532
1533 if (strcmp(ADS_PAGE_CTL_OID, rcontrols[i]->ldctl_oid) != 0)
1534 continue;
1535
1536 cookie_be = ber_init(&rcontrols[i]->ldctl_value);
1537 ber_scanf(cookie_be,"{iO}", &tmp, &cookie_bv);
1538 /* the berval is the cookie, but must be freed when it is all
1539 done */
1540 if (cookie_bv->bv_len)
1541 *cookie=ber_bvdup(cookie_bv);
1542 else
1543 *cookie=NULL;
1544 ber_bvfree(cookie_bv);
1545 ber_free(cookie_be, 1);
1546 break;
1547 }
1548 ldap_controls_free(rcontrols);
1549 done:
1550 return rc;
1551 }
1552
1553 int smbldap_modify(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1554 {
1555 int rc = LDAP_SERVER_DOWN;
1556 int attempts = 0;
1557 char *utf8_dn;
1558 time_t endtime = time(NULL)+lp_ldap_timeout();
1559 size_t converted_size;
1560
1561 SMB_ASSERT(ldap_state);
1562
1563 DEBUG(5,("smbldap_modify: dn => [%s]\n", dn ));
1564
1565 if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
1566 return LDAP_NO_MEMORY;
1567 }
1568
1569 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1570 rc = ldap_modify_s(ldap_state->ldap_struct, utf8_dn, attrs);
1571 if (rc != LDAP_SUCCESS) {
1572 char *ld_error = NULL;
1573 int ld_errno;
1574
1575 ldap_get_option(ldap_state->ldap_struct,
1576 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1577
1578 ldap_get_option(ldap_state->ldap_struct,
1579 LDAP_OPT_ERROR_STRING, &ld_error);
1580 DEBUG(10, ("Failed to modify dn: %s, error: %d (%s) "
1581 "(%s)\n", dn, ld_errno,
1582 ldap_err2string(rc),
1583 ld_error ? ld_error : "unknown"));
1584 SAFE_FREE(ld_error);
1585
1586 if (ld_errno == LDAP_SERVER_DOWN) {
1587 ldap_unbind(ldap_state->ldap_struct);
1588 ldap_state->ldap_struct = NULL;
1589 }
1590 }
1591 }
1592
1593 TALLOC_FREE(utf8_dn);
1594 return rc;
1595 }
1596
1597 int smbldap_add(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1598 {
1599 int rc = LDAP_SERVER_DOWN;
1600 int attempts = 0;
1601 char *utf8_dn;
1602 time_t endtime = time(NULL)+lp_ldap_timeout();
1603 size_t converted_size;
1604
1605 SMB_ASSERT(ldap_state);
1606
1607 DEBUG(5,("smbldap_add: dn => [%s]\n", dn ));
1608
1609 if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
1610 return LDAP_NO_MEMORY;
1611 }
1612
1613 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1614 rc = ldap_add_s(ldap_state->ldap_struct, utf8_dn, attrs);
1615 if (rc != LDAP_SUCCESS) {
1616 char *ld_error = NULL;
1617 int ld_errno;
1618
1619 ldap_get_option(ldap_state->ldap_struct,
1620 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1621
1622 ldap_get_option(ldap_state->ldap_struct,
1623 LDAP_OPT_ERROR_STRING, &ld_error);
1624 DEBUG(10, ("Failed to add dn: %s, error: %d (%s) "
1625 "(%s)\n", dn, ld_errno,
1626 ldap_err2string(rc),
1627 ld_error ? ld_error : "unknown"));
1628 SAFE_FREE(ld_error);
1629
1630 if (ld_errno == LDAP_SERVER_DOWN) {
1631 ldap_unbind(ldap_state->ldap_struct);
1632 ldap_state->ldap_struct = NULL;
1633 }
1634 }
1635 }
1636
1637 TALLOC_FREE(utf8_dn);
1638 return rc;
1639 }
1640
1641 int smbldap_delete(struct smbldap_state *ldap_state, const char *dn)
1642 {
1643 int rc = LDAP_SERVER_DOWN;
1644 int attempts = 0;
1645 char *utf8_dn;
1646 time_t endtime = time(NULL)+lp_ldap_timeout();
1647 size_t converted_size;
1648
1649 SMB_ASSERT(ldap_state);
1650
1651 DEBUG(5,("smbldap_delete: dn => [%s]\n", dn ));
1652
1653 if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
1654 return LDAP_NO_MEMORY;
1655 }
1656
1657 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1658 rc = ldap_delete_s(ldap_state->ldap_struct, utf8_dn);
1659 if (rc != LDAP_SUCCESS) {
1660 char *ld_error = NULL;
1661 int ld_errno;
1662
1663 ldap_get_option(ldap_state->ldap_struct,
1664 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1665
1666 ldap_get_option(ldap_state->ldap_struct,
1667 LDAP_OPT_ERROR_STRING, &ld_error);
1668 DEBUG(10, ("Failed to delete dn: %s, error: %d (%s) "
1669 "(%s)\n", dn, ld_errno,
1670 ldap_err2string(rc),
1671 ld_error ? ld_error : "unknown"));
1672 SAFE_FREE(ld_error);
1673
1674 if (ld_errno == LDAP_SERVER_DOWN) {
1675 ldap_unbind(ldap_state->ldap_struct);
1676 ldap_state->ldap_struct = NULL;
1677 }
1678 }
1679 }
1680
1681 TALLOC_FREE(utf8_dn);
1682 return rc;
1683 }
1684
1685 int smbldap_extended_operation(struct smbldap_state *ldap_state,
1686 LDAP_CONST char *reqoid, struct berval *reqdata,
1687 LDAPControl **serverctrls, LDAPControl **clientctrls,
1688 char **retoidp, struct berval **retdatap)
1689 {
1690 int rc = LDAP_SERVER_DOWN;
1691 int attempts = 0;
1692 time_t endtime = time(NULL)+lp_ldap_timeout();
1693
1694 if (!ldap_state)
1695 return (-1);
1696
1697 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1698 rc = ldap_extended_operation_s(ldap_state->ldap_struct, reqoid,
1699 reqdata, serverctrls,
1700 clientctrls, retoidp, retdatap);
1701 if (rc != LDAP_SUCCESS) {
1702 char *ld_error = NULL;
1703 int ld_errno;
1704
1705 ldap_get_option(ldap_state->ldap_struct,
1706 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1707
1708 ldap_get_option(ldap_state->ldap_struct,
1709 LDAP_OPT_ERROR_STRING, &ld_error);
1710 DEBUG(10, ("Extended operation failed with error: "
1711 "%d (%s) (%s)\n", ld_errno,
1712 ldap_err2string(rc),
1713 ld_error ? ld_error : "unknown"));
1714 SAFE_FREE(ld_error);
1715
1716 if (ld_errno == LDAP_SERVER_DOWN) {
1717 ldap_unbind(ldap_state->ldap_struct);
1718 ldap_state->ldap_struct = NULL;
1719 }
1720 }
1721 }
1722
1723 return rc;
1724 }
1725
1726 /*******************************************************************
1727 run the search by name.
1728 ******************************************************************/
1729 int smbldap_search_suffix (struct smbldap_state *ldap_state,
1730 const char *filter, const char **search_attr,
1731 LDAPMessage ** result)
1732 {
1733 return smbldap_search(ldap_state, lp_ldap_suffix(), LDAP_SCOPE_SUBTREE,
1734 filter, search_attr, 0, result);
1735 }
1736
1737 static void smbldap_idle_fn(struct event_context *event_ctx,
1738 struct timed_event *te,
1739 struct timeval now,
1740 void *private_data)
1741 {
1742 struct smbldap_state *state = (struct smbldap_state *)private_data;
1743
1744 TALLOC_FREE(state->idle_event);
1745
1746 if (state->ldap_struct == NULL) {
1747 DEBUG(10,("ldap connection not connected...\n"));
1748 return;
1749 }
1750
1751 if ((state->last_use+SMBLDAP_IDLE_TIME) > now.tv_sec) {
1752 DEBUG(10,("ldap connection not idle...\n"));
1753
1754 state->idle_event = event_add_timed(
1755 event_ctx, state,
1756 timeval_add(&now, SMBLDAP_IDLE_TIME, 0),
1757 smbldap_idle_fn,
1758 private_data);
1759 return;
1760 }
1761
1762 DEBUG(7,("ldap connection idle...closing connection\n"));
1763 smbldap_close(state);
1764 }
1765
1766 /**********************************************************************
1767 Housekeeping
1768 *********************************************************************/
1769
1770 void smbldap_free_struct(struct smbldap_state **ldap_state)
1771 {
1772 smbldap_close(*ldap_state);
1773
1774 if ((*ldap_state)->bind_secret) {
1775 memset((*ldap_state)->bind_secret, '\0', strlen((*ldap_state)->bind_secret));
1776 }
1777
1778 SAFE_FREE((*ldap_state)->bind_dn);
1779 SAFE_FREE((*ldap_state)->bind_secret);
1780
1781 TALLOC_FREE(*ldap_state);
1782
1783 /* No need to free any further, as it is talloc()ed */
1784 }
1785
1786 static int smbldap_state_destructor(struct smbldap_state *state)
1787 {
1788 smbldap_free_struct(&state);
1789 return 0;
1790 }
1791
1792
1793 /**********************************************************************
1794 Intitalise the 'general' ldap structures, on which ldap operations may be conducted
1795 *********************************************************************/
1796
1797 NTSTATUS smbldap_init(TALLOC_CTX *mem_ctx, struct event_context *event_ctx,
1798 const char *location,
1799 struct smbldap_state **smbldap_state)
1800 {
1801 *smbldap_state = TALLOC_ZERO_P(mem_ctx, struct smbldap_state);
1802 if (!*smbldap_state) {
1803 DEBUG(0, ("talloc() failed for ldapsam private_data!\n"));
1804 return NT_STATUS_NO_MEMORY;
1805 }
1806
1807 if (location) {
1808 (*smbldap_state)->uri = talloc_strdup(mem_ctx, location);
1809 } else {
1810 (*smbldap_state)->uri = "ldap://localhost";
1811 }
1812
1813 (*smbldap_state)->event_context = event_ctx;
1814
1815 talloc_set_destructor(*smbldap_state, smbldap_state_destructor);
1816 return NT_STATUS_OK;
1817 }
1818
1819 char *smbldap_talloc_dn(TALLOC_CTX *mem_ctx, LDAP *ld,
1820 LDAPMessage *entry)
1821 {
1822 char *utf8_dn, *unix_dn;
1823 size_t converted_size;
1824
1825 utf8_dn = ldap_get_dn(ld, entry);
1826 if (!utf8_dn) {
1827 DEBUG (5, ("smbldap_talloc_dn: ldap_get_dn failed\n"));
1828 return NULL;
1829 }
1830 if (!pull_utf8_talloc(mem_ctx, &unix_dn, utf8_dn, &converted_size)) {
1831 DEBUG (0, ("smbldap_talloc_dn: String conversion failure utf8 "
1832 "[%s]\n", utf8_dn));
1833 return NULL;
1834 }
1835 ldap_memfree(utf8_dn);
1836 return unix_dn;
1837 }
1838
1839 /*******************************************************************
1840 Check if root-dse has a certain Control or Extension
1841 ********************************************************************/
1842
1843 static bool smbldap_check_root_dse(LDAP *ld, const char **attrs, const char *value)
1844 {
1845 LDAPMessage *msg = NULL;
1846 LDAPMessage *entry = NULL;
1847 char **values = NULL;
1848 int rc, num_result, num_values, i;
1849 bool result = False;
1850
1851 if (!attrs[0]) {
1852 DEBUG(3,("smbldap_check_root_dse: nothing to look for\n"));
1853 return False;
1854 }
1855
1856 if (!strequal(attrs[0], "supportedExtension") &&
1857 !strequal(attrs[0], "supportedControl") &&
1858 !strequal(attrs[0], "namingContexts")) {
1859 DEBUG(3,("smbldap_check_root_dse: no idea what to query root-dse for: %s ?\n", attrs[0]));
1860 return False;
1861 }
1862
1863 rc = ldap_search_s(ld, "", LDAP_SCOPE_BASE,
1864 "(objectclass=*)", CONST_DISCARD(char **, attrs), 0 , &msg);
1865
1866 if (rc != LDAP_SUCCESS) {
1867 DEBUG(3,("smbldap_check_root_dse: Could not search rootDSE\n"));
1868 return False;
1869 }
1870
1871 num_result = ldap_count_entries(ld, msg);
1872
1873 if (num_result != 1) {
1874 DEBUG(3,("smbldap_check_root_dse: Expected one rootDSE, got %d\n", num_result));
1875 goto done;
1876 }
1877
1878 entry = ldap_first_entry(ld, msg);
1879
1880 if (entry == NULL) {
1881 DEBUG(3,("smbldap_check_root_dse: Could not retrieve rootDSE\n"));
1882 goto done;
1883 }
1884
1885 values = ldap_get_values(ld, entry, attrs[0]);
1886
1887 if (values == NULL) {
1888 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not support any %s\n", attrs[0]));
1889 goto done;
1890 }
1891
1892 num_values = ldap_count_values(values);
1893
1894 if (num_values == 0) {
1895 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not have any %s\n", attrs[0]));
1896 goto done;
1897 }
1898
1899 for (i=0; i<num_values; i++) {
1900 if (strcmp(values[i], value) == 0)
1901 result = True;
1902 }
1903
1904
1905 done:
1906 if (values != NULL)
1907 ldap_value_free(values);
1908 if (msg != NULL)
1909 ldap_msgfree(msg);
1910
1911 return result;
1912
1913 }
1914
1915 /*******************************************************************
1916 Check if LDAP-Server supports a certain Control (OID in string format)
1917 ********************************************************************/
1918
1919 bool smbldap_has_control(LDAP *ld, const char *control)
1920 {
1921 const char *attrs[] = { "supportedControl", NULL };
1922 return smbldap_check_root_dse(ld, attrs, control);
1923 }
1924
1925 /*******************************************************************
1926 Check if LDAP-Server supports a certain Extension (OID in string format)
1927 ********************************************************************/
1928
1929 bool smbldap_has_extension(LDAP *ld, const char *extension)
1930 {
1931 const char *attrs[] = { "supportedExtension", NULL };
1932 return smbldap_check_root_dse(ld, attrs, extension);
1933 }
1934
1935 /*******************************************************************
1936 Check if LDAP-Server holds a given namingContext
1937 ********************************************************************/
1938
1939 bool smbldap_has_naming_context(LDAP *ld, const char *naming_context)
1940 {
1941 const char *attrs[] = { "namingContexts", NULL };
1942 return smbldap_check_root_dse(ld, attrs, naming_context);
1943 }
1944
1945 bool smbldap_set_creds(struct smbldap_state *ldap_state, bool anon, const char *dn, const char *secret)
1946 {
1947 ldap_state->anonymous = anon;
1948
1949 /* free any previously set credential */
1950
1951 SAFE_FREE(ldap_state->bind_dn);
1952 if (ldap_state->bind_secret) {
1953 /* make sure secrets are zeroed out of memory */
1954 memset(ldap_state->bind_secret, '\0', strlen(ldap_state->bind_secret));
1955 SAFE_FREE(ldap_state->bind_secret);
1956 }
1957
1958 if ( ! anon) {
1959 ldap_state->bind_dn = SMB_STRDUP(dn);
1960 ldap_state->bind_secret = SMB_STRDUP(secret);
1961 }
1962
1963 return True;
1964 }
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