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kerberos - set the memory to "0"s before freeing the password to prevent security...
[Samba/nascimento.git] / source3 / lib / smbldap.c
blob118f89169b912bb1c2252317a713a78ca6ff8d25
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, LDAP * ldap_struct)
1097 {
1098 int rc;
1099 int version;
1100
1101 if (!ldap_state->anonymous && !ldap_state->bind_dn) {
1102 char *bind_dn = NULL;
1103 char *bind_secret = NULL;
1104
1105 /* get the default dn and password only if they are not set already */
1106 if (!fetch_ldap_pw(&bind_dn, &bind_secret)) {
1107 DEBUG(0, ("ldap_connect_system: Failed to retrieve password from secrets.tdb\n"));
1108 return LDAP_INVALID_CREDENTIALS;
1109 }
1110 smbldap_set_creds(ldap_state, false, bind_dn, bind_secret);
1111 SAFE_FREE(bind_dn);
1112 memset(bind_secret, '\0', strlen(bind_secret));
1113 SAFE_FREE(bind_secret);
1114 }
1115
1116 /* removed the sasl_bind_s "EXTERNAL" stuff, as my testsuite
1117 (OpenLDAP) doesnt' seem to support it */
1118
1119 DEBUG(10,("ldap_connect_system: Binding to ldap server %s as \"%s\"\n",
1120 ldap_state->uri, ldap_state->bind_dn));
1121
1122 #ifdef HAVE_LDAP_SET_REBIND_PROC
1123 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
1124 # if LDAP_SET_REBIND_PROC_ARGS == 2
1125 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect);
1126 # endif
1127 # if LDAP_SET_REBIND_PROC_ARGS == 3
1128 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect_with_state, (void *)ldap_state);
1129 # endif
1130 #else /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1131 # if LDAP_SET_REBIND_PROC_ARGS == 2
1132 ldap_set_rebind_proc(ldap_struct, &rebindproc);
1133 # endif
1134 # if LDAP_SET_REBIND_PROC_ARGS == 3
1135 ldap_set_rebind_proc(ldap_struct, &rebindproc_with_state, (void *)ldap_state);
1136 # endif
1137 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1138 #endif
1139
1140 rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
1141
1142 if (rc != LDAP_SUCCESS) {
1143 char *ld_error = NULL;
1144 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
1145 &ld_error);
1146 DEBUG(ldap_state->num_failures ? 2 : 0,
1147 ("failed to bind to server %s with dn=\"%s\" Error: %s\n\t%s\n",
1148 ldap_state->uri,
1149 ldap_state->bind_dn ? ldap_state->bind_dn : "[Anonymous bind]",
1150 ldap_err2string(rc),
1151 ld_error ? ld_error : "(unknown)"));
1152 SAFE_FREE(ld_error);
1153 ldap_state->num_failures++;
1154 return rc;
1155 }
1156
1157 ldap_state->num_failures = 0;
1158 ldap_state->paged_results = False;
1159
1160 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
1161
1162 if (smbldap_has_control(ldap_state->ldap_struct, ADS_PAGE_CTL_OID) && version == 3) {
1163 ldap_state->paged_results = True;
1164 }
1165
1166 DEBUG(3, ("ldap_connect_system: successful connection to the LDAP server\n"));
1167 DEBUGADD(10, ("ldap_connect_system: LDAP server %s support paged results\n",
1168 ldap_state->paged_results ? "does" : "does not"));
1169 return rc;
1170 }
1171
1172 static void smbldap_idle_fn(struct event_context *event_ctx,
1173 struct timed_event *te,
1174 struct timeval now,
1175 void *private_data);
1176
1177 /**********************************************************************
1178 Connect to LDAP server (called before every ldap operation)
1179 *********************************************************************/
1180 static int smbldap_open(struct smbldap_state *ldap_state)
1181 {
1182 int rc, opt_rc;
1183 bool reopen = False;
1184 SMB_ASSERT(ldap_state);
1185
1186 if ((ldap_state->ldap_struct != NULL) && ((ldap_state->last_ping + SMBLDAP_DONT_PING_TIME) < time(NULL))) {
1187
1188 #ifdef HAVE_UNIXSOCKET
1189 struct sockaddr_un addr;
1190 #else
1191 struct sockaddr addr;
1192 #endif
1193 socklen_t len = sizeof(addr);
1194 int sd;
1195
1196 opt_rc = ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_DESC, &sd);
1197 if (opt_rc == 0 && (getpeername(sd, (struct sockaddr *) &addr, &len)) < 0 )
1198 reopen = True;
1199
1200 #ifdef HAVE_UNIXSOCKET
1201 if (opt_rc == 0 && addr.sun_family == AF_UNIX)
1202 reopen = True;
1203 #endif
1204 if (reopen) {
1205 /* the other end has died. reopen. */
1206 ldap_unbind(ldap_state->ldap_struct);
1207 ldap_state->ldap_struct = NULL;
1208 ldap_state->last_ping = (time_t)0;
1209 } else {
1210 ldap_state->last_ping = time(NULL);
1211 }
1212 }
1213
1214 if (ldap_state->ldap_struct != NULL) {
1215 DEBUG(11,("smbldap_open: already connected to the LDAP server\n"));
1216 return LDAP_SUCCESS;
1217 }
1218
1219 if ((rc = smbldap_open_connection(ldap_state))) {
1220 return rc;
1221 }
1222
1223 if ((rc = smbldap_connect_system(ldap_state, ldap_state->ldap_struct))) {
1224 ldap_unbind(ldap_state->ldap_struct);
1225 ldap_state->ldap_struct = NULL;
1226 return rc;
1227 }
1228
1229
1230 ldap_state->last_ping = time(NULL);
1231 ldap_state->pid = sys_getpid();
1232
1233 TALLOC_FREE(ldap_state->idle_event);
1234
1235 if (ldap_state->event_context != NULL) {
1236 ldap_state->idle_event = event_add_timed(
1237 ldap_state->event_context, NULL,
1238 timeval_current_ofs(SMBLDAP_IDLE_TIME, 0),
1239 smbldap_idle_fn, ldap_state);
1240 }
1241
1242 DEBUG(4,("The LDAP server is successfully connected\n"));
1243
1244 return LDAP_SUCCESS;
1245 }
1246
1247 /**********************************************************************
1248 Disconnect from LDAP server
1249 *********************************************************************/
1250 static NTSTATUS smbldap_close(struct smbldap_state *ldap_state)
1251 {
1252 if (!ldap_state)
1253 return NT_STATUS_INVALID_PARAMETER;
1254
1255 if (ldap_state->ldap_struct != NULL) {
1256 ldap_unbind(ldap_state->ldap_struct);
1257 ldap_state->ldap_struct = NULL;
1258 }
1259
1260 smbldap_delete_state(ldap_state);
1261
1262 DEBUG(5,("The connection to the LDAP server was closed\n"));
1263 /* maybe free the results here --metze */
1264
1265 return NT_STATUS_OK;
1266 }
1267
1268 static bool got_alarm;
1269
1270 static void (*old_handler)(int);
1271
1272 static void gotalarm_sig(int dummy)
1273 {
1274 got_alarm = True;
1275 }
1276
1277 static int another_ldap_try(struct smbldap_state *ldap_state, int *rc,
1278 int *attempts, time_t endtime)
1279 {
1280 time_t now = time(NULL);
1281 int open_rc = LDAP_SERVER_DOWN;
1282
1283 if (*rc != LDAP_SERVER_DOWN)
1284 goto no_next;
1285
1286 if (now >= endtime) {
1287 smbldap_close(ldap_state);
1288 *rc = LDAP_TIMEOUT;
1289 goto no_next;
1290 }
1291
1292 if (*attempts == 0) {
1293 got_alarm = False;
1294 old_handler = CatchSignal(SIGALRM, gotalarm_sig);
1295 alarm(endtime - now);
1296
1297 if (ldap_state->pid != sys_getpid())
1298 smbldap_close(ldap_state);
1299 }
1300
1301 while (1) {
1302
1303 if (*attempts != 0)
1304 smb_msleep(1000);
1305
1306 *attempts += 1;
1307
1308 open_rc = smbldap_open(ldap_state);
1309
1310 if (open_rc == LDAP_SUCCESS) {
1311 ldap_state->last_use = now;
1312 return True;
1313 }
1314
1315 if (open_rc == LDAP_INSUFFICIENT_ACCESS) {
1316 /* The fact that we are non-root or any other
1317 * access-denied condition will not change in the next
1318 * round of trying */
1319 *rc = open_rc;
1320 break;
1321 }
1322
1323 if (got_alarm) {
1324 *rc = LDAP_TIMEOUT;
1325 break;
1326 }
1327
1328 if (open_rc != LDAP_SUCCESS) {
1329 DEBUG(1, ("Connection to LDAP server failed for the "
1330 "%d try!\n", *attempts));
1331 }
1332 }
1333
1334 no_next:
1335 CatchSignal(SIGALRM, old_handler);
1336 alarm(0);
1337 ldap_state->last_use = now;
1338 return False;
1339 }
1340
1341 /*********************************************************************
1342 ********************************************************************/
1343
1344 static int smbldap_search_ext(struct smbldap_state *ldap_state,
1345 const char *base, int scope, const char *filter,
1346 const char *attrs[], int attrsonly,
1347 LDAPControl **sctrls, LDAPControl **cctrls,
1348 int sizelimit, LDAPMessage **res)
1349 {
1350 int rc = LDAP_SERVER_DOWN;
1351 int attempts = 0;
1352 char *utf8_filter;
1353 time_t endtime = time(NULL)+lp_ldap_timeout();
1354 struct timeval timeout;
1355 size_t converted_size;
1356
1357 SMB_ASSERT(ldap_state);
1358
1359 DEBUG(5,("smbldap_search_ext: base => [%s], filter => [%s], "
1360 "scope => [%d]\n", base, filter, scope));
1361
1362 if (ldap_state->last_rebind.tv_sec > 0) {
1363 struct timeval tval;
1364 int64_t tdiff = 0;
1365 int sleep_time = 0;
1366
1367 ZERO_STRUCT(tval);
1368 GetTimeOfDay(&tval);
1369
1370 tdiff = usec_time_diff(&tval, &ldap_state->last_rebind);
1371 tdiff /= 1000; /* Convert to milliseconds. */
1372
1373 sleep_time = lp_ldap_replication_sleep()-(int)tdiff;
1374 sleep_time = MIN(sleep_time, MAX_LDAP_REPLICATION_SLEEP_TIME);
1375
1376 if (sleep_time > 0) {
1377 /* we wait for the LDAP replication */
1378 DEBUG(5,("smbldap_search_ext: waiting %d milliseconds "
1379 "for LDAP replication.\n",sleep_time));
1380 smb_msleep(sleep_time);
1381 DEBUG(5,("smbldap_search_ext: go on!\n"));
1382 }
1383 ZERO_STRUCT(ldap_state->last_rebind);
1384 }
1385
1386 if (!push_utf8_talloc(talloc_tos(), &utf8_filter, filter, &converted_size)) {
1387 return LDAP_NO_MEMORY;
1388 }
1389
1390 /* Setup timeout for the ldap_search_ext_s call - local and remote. */
1391 timeout.tv_sec = lp_ldap_timeout();
1392 timeout.tv_usec = 0;
1393
1394 /* Setup alarm timeout.... Do we need both of these ? JRA.
1395 * Yes, I think we do need both of these. The server timeout only
1396 * covers the case where the server's operation takes too long. It
1397 * does not cover the case where the request hangs on its way to the
1398 * server. The server side timeout is not strictly necessary, it's
1399 * just a bit more kind to the server. VL. */
1400
1401 got_alarm = 0;
1402 CatchSignal(SIGALRM, gotalarm_sig);
1403 alarm(lp_ldap_timeout());
1404 /* End setup timeout. */
1405
1406 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1407 rc = ldap_search_ext_s(ldap_state->ldap_struct, base, scope,
1408 utf8_filter,
1409 CONST_DISCARD(char **, attrs),
1410 attrsonly, sctrls, cctrls, &timeout,
1411 sizelimit, res);
1412 if (rc != LDAP_SUCCESS) {
1413 char *ld_error = NULL;
1414 int ld_errno;
1415
1416 ldap_get_option(ldap_state->ldap_struct,
1417 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1418
1419 ldap_get_option(ldap_state->ldap_struct,
1420 LDAP_OPT_ERROR_STRING, &ld_error);
1421 DEBUG(10, ("Failed search for base: %s, error: %d (%s) "
1422 "(%s)\n", base, ld_errno,
1423 ldap_err2string(rc),
1424 ld_error ? ld_error : "unknown"));
1425 SAFE_FREE(ld_error);
1426
1427 if (ld_errno == LDAP_SERVER_DOWN) {
1428 ldap_unbind(ldap_state->ldap_struct);
1429 ldap_state->ldap_struct = NULL;
1430 }
1431 }
1432 }
1433
1434 TALLOC_FREE(utf8_filter);
1435
1436 /* Teardown timeout. */
1437 CatchSignal(SIGALRM, SIG_IGN);
1438 alarm(0);
1439
1440 if (got_alarm != 0)
1441 return LDAP_TIMELIMIT_EXCEEDED;
1442
1443 return rc;
1444 }
1445
1446 int smbldap_search(struct smbldap_state *ldap_state,
1447 const char *base, int scope, const char *filter,
1448 const char *attrs[], int attrsonly,
1449 LDAPMessage **res)
1450 {
1451 return smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1452 attrsonly, NULL, NULL, LDAP_NO_LIMIT, res);
1453 }
1454
1455 int smbldap_search_paged(struct smbldap_state *ldap_state,
1456 const char *base, int scope, const char *filter,
1457 const char **attrs, int attrsonly, int pagesize,
1458 LDAPMessage **res, void **cookie)
1459 {
1460 LDAPControl pr;
1461 LDAPControl **rcontrols;
1462 LDAPControl *controls[2] = { NULL, NULL};
1463 BerElement *cookie_be = NULL;
1464 struct berval *cookie_bv = NULL;
1465 int tmp = 0, i, rc;
1466 bool critical = True;
1467
1468 *res = NULL;
1469
1470 DEBUG(3,("smbldap_search_paged: base => [%s], filter => [%s],"
1471 "scope => [%d], pagesize => [%d]\n",
1472 base, filter, scope, pagesize));
1473
1474 cookie_be = ber_alloc_t(LBER_USE_DER);
1475 if (cookie_be == NULL) {
1476 DEBUG(0,("smbldap_create_page_control: ber_alloc_t returns "
1477 "NULL\n"));
1478 return LDAP_NO_MEMORY;
1479 }
1480
1481 /* construct cookie */
1482 if (*cookie != NULL) {
1483 ber_printf(cookie_be, "{iO}", (ber_int_t) pagesize, *cookie);
1484 ber_bvfree((struct berval *)*cookie); /* don't need it from last time */
1485 *cookie = NULL;
1486 } else {
1487 ber_printf(cookie_be, "{io}", (ber_int_t) pagesize, "", 0);
1488 }
1489 ber_flatten(cookie_be, &cookie_bv);
1490
1491 pr.ldctl_oid = CONST_DISCARD(char *, ADS_PAGE_CTL_OID);
1492 pr.ldctl_iscritical = (char) critical;
1493 pr.ldctl_value.bv_len = cookie_bv->bv_len;
1494 pr.ldctl_value.bv_val = cookie_bv->bv_val;
1495
1496 controls[0] = &pr;
1497 controls[1] = NULL;
1498
1499 rc = smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1500 0, controls, NULL, LDAP_NO_LIMIT, res);
1501
1502 ber_free(cookie_be, 1);
1503 ber_bvfree(cookie_bv);
1504
1505 if (rc != 0) {
1506 DEBUG(3,("smbldap_search_paged: smbldap_search_ext(%s) "
1507 "failed with [%s]\n", filter, ldap_err2string(rc)));
1508 goto done;
1509 }
1510
1511 DEBUG(3,("smbldap_search_paged: search was successful\n"));
1512
1513 rc = ldap_parse_result(ldap_state->ldap_struct, *res, NULL, NULL,
1514 NULL, NULL, &rcontrols, 0);
1515 if (rc != 0) {
1516 DEBUG(3,("smbldap_search_paged: ldap_parse_result failed " \
1517 "with [%s]\n", ldap_err2string(rc)));
1518 goto done;
1519 }
1520
1521 if (rcontrols == NULL)
1522 goto done;
1523
1524 for (i=0; rcontrols[i]; i++) {
1525
1526 if (strcmp(ADS_PAGE_CTL_OID, rcontrols[i]->ldctl_oid) != 0)
1527 continue;
1528
1529 cookie_be = ber_init(&rcontrols[i]->ldctl_value);
1530 ber_scanf(cookie_be,"{iO}", &tmp, &cookie_bv);
1531 /* the berval is the cookie, but must be freed when it is all
1532 done */
1533 if (cookie_bv->bv_len)
1534 *cookie=ber_bvdup(cookie_bv);
1535 else
1536 *cookie=NULL;
1537 ber_bvfree(cookie_bv);
1538 ber_free(cookie_be, 1);
1539 break;
1540 }
1541 ldap_controls_free(rcontrols);
1542 done:
1543 return rc;
1544 }
1545
1546 int smbldap_modify(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1547 {
1548 int rc = LDAP_SERVER_DOWN;
1549 int attempts = 0;
1550 char *utf8_dn;
1551 time_t endtime = time(NULL)+lp_ldap_timeout();
1552 size_t converted_size;
1553
1554 SMB_ASSERT(ldap_state);
1555
1556 DEBUG(5,("smbldap_modify: dn => [%s]\n", dn ));
1557
1558 if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
1559 return LDAP_NO_MEMORY;
1560 }
1561
1562 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1563 rc = ldap_modify_s(ldap_state->ldap_struct, utf8_dn, attrs);
1564 if (rc != LDAP_SUCCESS) {
1565 char *ld_error = NULL;
1566 int ld_errno;
1567
1568 ldap_get_option(ldap_state->ldap_struct,
1569 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1570
1571 ldap_get_option(ldap_state->ldap_struct,
1572 LDAP_OPT_ERROR_STRING, &ld_error);
1573 DEBUG(10, ("Failed to modify dn: %s, error: %d (%s) "
1574 "(%s)\n", dn, ld_errno,
1575 ldap_err2string(rc),
1576 ld_error ? ld_error : "unknown"));
1577 SAFE_FREE(ld_error);
1578
1579 if (ld_errno == LDAP_SERVER_DOWN) {
1580 ldap_unbind(ldap_state->ldap_struct);
1581 ldap_state->ldap_struct = NULL;
1582 }
1583 }
1584 }
1585
1586 TALLOC_FREE(utf8_dn);
1587 return rc;
1588 }
1589
1590 int smbldap_add(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1591 {
1592 int rc = LDAP_SERVER_DOWN;
1593 int attempts = 0;
1594 char *utf8_dn;
1595 time_t endtime = time(NULL)+lp_ldap_timeout();
1596 size_t converted_size;
1597
1598 SMB_ASSERT(ldap_state);
1599
1600 DEBUG(5,("smbldap_add: dn => [%s]\n", dn ));
1601
1602 if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
1603 return LDAP_NO_MEMORY;
1604 }
1605
1606 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1607 rc = ldap_add_s(ldap_state->ldap_struct, utf8_dn, attrs);
1608 if (rc != LDAP_SUCCESS) {
1609 char *ld_error = NULL;
1610 int ld_errno;
1611
1612 ldap_get_option(ldap_state->ldap_struct,
1613 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1614
1615 ldap_get_option(ldap_state->ldap_struct,
1616 LDAP_OPT_ERROR_STRING, &ld_error);
1617 DEBUG(10, ("Failed to add dn: %s, error: %d (%s) "
1618 "(%s)\n", dn, ld_errno,
1619 ldap_err2string(rc),
1620 ld_error ? ld_error : "unknown"));
1621 SAFE_FREE(ld_error);
1622
1623 if (ld_errno == LDAP_SERVER_DOWN) {
1624 ldap_unbind(ldap_state->ldap_struct);
1625 ldap_state->ldap_struct = NULL;
1626 }
1627 }
1628 }
1629
1630 TALLOC_FREE(utf8_dn);
1631 return rc;
1632 }
1633
1634 int smbldap_delete(struct smbldap_state *ldap_state, const char *dn)
1635 {
1636 int rc = LDAP_SERVER_DOWN;
1637 int attempts = 0;
1638 char *utf8_dn;
1639 time_t endtime = time(NULL)+lp_ldap_timeout();
1640 size_t converted_size;
1641
1642 SMB_ASSERT(ldap_state);
1643
1644 DEBUG(5,("smbldap_delete: dn => [%s]\n", dn ));
1645
1646 if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
1647 return LDAP_NO_MEMORY;
1648 }
1649
1650 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1651 rc = ldap_delete_s(ldap_state->ldap_struct, utf8_dn);
1652 if (rc != LDAP_SUCCESS) {
1653 char *ld_error = NULL;
1654 int ld_errno;
1655
1656 ldap_get_option(ldap_state->ldap_struct,
1657 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1658
1659 ldap_get_option(ldap_state->ldap_struct,
1660 LDAP_OPT_ERROR_STRING, &ld_error);
1661 DEBUG(10, ("Failed to delete dn: %s, error: %d (%s) "
1662 "(%s)\n", dn, ld_errno,
1663 ldap_err2string(rc),
1664 ld_error ? ld_error : "unknown"));
1665 SAFE_FREE(ld_error);
1666
1667 if (ld_errno == LDAP_SERVER_DOWN) {
1668 ldap_unbind(ldap_state->ldap_struct);
1669 ldap_state->ldap_struct = NULL;
1670 }
1671 }
1672 }
1673
1674 TALLOC_FREE(utf8_dn);
1675 return rc;
1676 }
1677
1678 int smbldap_extended_operation(struct smbldap_state *ldap_state,
1679 LDAP_CONST char *reqoid, struct berval *reqdata,
1680 LDAPControl **serverctrls, LDAPControl **clientctrls,
1681 char **retoidp, struct berval **retdatap)
1682 {
1683 int rc = LDAP_SERVER_DOWN;
1684 int attempts = 0;
1685 time_t endtime = time(NULL)+lp_ldap_timeout();
1686
1687 if (!ldap_state)
1688 return (-1);
1689
1690 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1691 rc = ldap_extended_operation_s(ldap_state->ldap_struct, reqoid,
1692 reqdata, serverctrls,
1693 clientctrls, retoidp, retdatap);
1694 if (rc != LDAP_SUCCESS) {
1695 char *ld_error = NULL;
1696 int ld_errno;
1697
1698 ldap_get_option(ldap_state->ldap_struct,
1699 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1700
1701 ldap_get_option(ldap_state->ldap_struct,
1702 LDAP_OPT_ERROR_STRING, &ld_error);
1703 DEBUG(10, ("Extended operation failed with error: "
1704 "%d (%s) (%s)\n", ld_errno,
1705 ldap_err2string(rc),
1706 ld_error ? ld_error : "unknown"));
1707 SAFE_FREE(ld_error);
1708
1709 if (ld_errno == LDAP_SERVER_DOWN) {
1710 ldap_unbind(ldap_state->ldap_struct);
1711 ldap_state->ldap_struct = NULL;
1712 }
1713 }
1714 }
1715
1716 return rc;
1717 }
1718
1719 /*******************************************************************
1720 run the search by name.
1721 ******************************************************************/
1722 int smbldap_search_suffix (struct smbldap_state *ldap_state,
1723 const char *filter, const char **search_attr,
1724 LDAPMessage ** result)
1725 {
1726 return smbldap_search(ldap_state, lp_ldap_suffix(), LDAP_SCOPE_SUBTREE,
1727 filter, search_attr, 0, result);
1728 }
1729
1730 static void smbldap_idle_fn(struct event_context *event_ctx,
1731 struct timed_event *te,
1732 struct timeval now,
1733 void *private_data)
1734 {
1735 struct smbldap_state *state = (struct smbldap_state *)private_data;
1736
1737 TALLOC_FREE(state->idle_event);
1738
1739 if (state->ldap_struct == NULL) {
1740 DEBUG(10,("ldap connection not connected...\n"));
1741 return;
1742 }
1743
1744 if ((state->last_use+SMBLDAP_IDLE_TIME) > now.tv_sec) {
1745 DEBUG(10,("ldap connection not idle...\n"));
1746
1747 state->idle_event = event_add_timed(
1748 event_ctx, NULL,
1749 timeval_add(&now, SMBLDAP_IDLE_TIME, 0),
1750 smbldap_idle_fn,
1751 private_data);
1752 return;
1753 }
1754
1755 DEBUG(7,("ldap connection idle...closing connection\n"));
1756 smbldap_close(state);
1757 }
1758
1759 /**********************************************************************
1760 Housekeeping
1761 *********************************************************************/
1762
1763 void smbldap_free_struct(struct smbldap_state **ldap_state)
1764 {
1765 smbldap_close(*ldap_state);
1766
1767 if ((*ldap_state)->bind_secret) {
1768 memset((*ldap_state)->bind_secret, '\0', strlen((*ldap_state)->bind_secret));
1769 }
1770
1771 SAFE_FREE((*ldap_state)->bind_dn);
1772 SAFE_FREE((*ldap_state)->bind_secret);
1773
1774 TALLOC_FREE((*ldap_state)->idle_event);
1775
1776 *ldap_state = NULL;
1777
1778 /* No need to free any further, as it is talloc()ed */
1779 }
1780
1781
1782 /**********************************************************************
1783 Intitalise the 'general' ldap structures, on which ldap operations may be conducted
1784 *********************************************************************/
1785
1786 NTSTATUS smbldap_init(TALLOC_CTX *mem_ctx, struct event_context *event_ctx,
1787 const char *location,
1788 struct smbldap_state **smbldap_state)
1789 {
1790 *smbldap_state = TALLOC_ZERO_P(mem_ctx, struct smbldap_state);
1791 if (!*smbldap_state) {
1792 DEBUG(0, ("talloc() failed for ldapsam private_data!\n"));
1793 return NT_STATUS_NO_MEMORY;
1794 }
1795
1796 if (location) {
1797 (*smbldap_state)->uri = talloc_strdup(mem_ctx, location);
1798 } else {
1799 (*smbldap_state)->uri = "ldap://localhost";
1800 }
1801
1802 (*smbldap_state)->event_context = event_ctx;
1803
1804 return NT_STATUS_OK;
1805 }
1806
1807 char *smbldap_talloc_dn(TALLOC_CTX *mem_ctx, LDAP *ld,
1808 LDAPMessage *entry)
1809 {
1810 char *utf8_dn, *unix_dn;
1811 size_t converted_size;
1812
1813 utf8_dn = ldap_get_dn(ld, entry);
1814 if (!utf8_dn) {
1815 DEBUG (5, ("smbldap_talloc_dn: ldap_get_dn failed\n"));
1816 return NULL;
1817 }
1818 if (!pull_utf8_talloc(mem_ctx, &unix_dn, utf8_dn, &converted_size)) {
1819 DEBUG (0, ("smbldap_talloc_dn: String conversion failure utf8 "
1820 "[%s]\n", utf8_dn));
1821 return NULL;
1822 }
1823 ldap_memfree(utf8_dn);
1824 return unix_dn;
1825 }
1826
1827 /*******************************************************************
1828 Check if root-dse has a certain Control or Extension
1829 ********************************************************************/
1830
1831 static bool smbldap_check_root_dse(LDAP *ld, const char **attrs, const char *value)
1832 {
1833 LDAPMessage *msg = NULL;
1834 LDAPMessage *entry = NULL;
1835 char **values = NULL;
1836 int rc, num_result, num_values, i;
1837 bool result = False;
1838
1839 if (!attrs[0]) {
1840 DEBUG(3,("smbldap_check_root_dse: nothing to look for\n"));
1841 return False;
1842 }
1843
1844 if (!strequal(attrs[0], "supportedExtension") &&
1845 !strequal(attrs[0], "supportedControl") &&
1846 !strequal(attrs[0], "namingContexts")) {
1847 DEBUG(3,("smbldap_check_root_dse: no idea what to query root-dse for: %s ?\n", attrs[0]));
1848 return False;
1849 }
1850
1851 rc = ldap_search_s(ld, "", LDAP_SCOPE_BASE,
1852 "(objectclass=*)", CONST_DISCARD(char **, attrs), 0 , &msg);
1853
1854 if (rc != LDAP_SUCCESS) {
1855 DEBUG(3,("smbldap_check_root_dse: Could not search rootDSE\n"));
1856 return False;
1857 }
1858
1859 num_result = ldap_count_entries(ld, msg);
1860
1861 if (num_result != 1) {
1862 DEBUG(3,("smbldap_check_root_dse: Expected one rootDSE, got %d\n", num_result));
1863 goto done;
1864 }
1865
1866 entry = ldap_first_entry(ld, msg);
1867
1868 if (entry == NULL) {
1869 DEBUG(3,("smbldap_check_root_dse: Could not retrieve rootDSE\n"));
1870 goto done;
1871 }
1872
1873 values = ldap_get_values(ld, entry, attrs[0]);
1874
1875 if (values == NULL) {
1876 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not support any %s\n", attrs[0]));
1877 goto done;
1878 }
1879
1880 num_values = ldap_count_values(values);
1881
1882 if (num_values == 0) {
1883 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not have any %s\n", attrs[0]));
1884 goto done;
1885 }
1886
1887 for (i=0; i<num_values; i++) {
1888 if (strcmp(values[i], value) == 0)
1889 result = True;
1890 }
1891
1892
1893 done:
1894 if (values != NULL)
1895 ldap_value_free(values);
1896 if (msg != NULL)
1897 ldap_msgfree(msg);
1898
1899 return result;
1900
1901 }
1902
1903 /*******************************************************************
1904 Check if LDAP-Server supports a certain Control (OID in string format)
1905 ********************************************************************/
1906
1907 bool smbldap_has_control(LDAP *ld, const char *control)
1908 {
1909 const char *attrs[] = { "supportedControl", NULL };
1910 return smbldap_check_root_dse(ld, attrs, control);
1911 }
1912
1913 /*******************************************************************
1914 Check if LDAP-Server supports a certain Extension (OID in string format)
1915 ********************************************************************/
1916
1917 bool smbldap_has_extension(LDAP *ld, const char *extension)
1918 {
1919 const char *attrs[] = { "supportedExtension", NULL };
1920 return smbldap_check_root_dse(ld, attrs, extension);
1921 }
1922
1923 /*******************************************************************
1924 Check if LDAP-Server holds a given namingContext
1925 ********************************************************************/
1926
1927 bool smbldap_has_naming_context(LDAP *ld, const char *naming_context)
1928 {
1929 const char *attrs[] = { "namingContexts", NULL };
1930 return smbldap_check_root_dse(ld, attrs, naming_context);
1931 }
1932
1933 bool smbldap_set_creds(struct smbldap_state *ldap_state, bool anon, const char *dn, const char *secret)
1934 {
1935 ldap_state->anonymous = anon;
1936
1937 /* free any previously set credential */
1938
1939 SAFE_FREE(ldap_state->bind_dn);
1940 if (ldap_state->bind_secret) {
1941 /* make sure secrets are zeroed out of memory */
1942 memset(ldap_state->bind_secret, '\0', strlen(ldap_state->bind_secret));
1943 SAFE_FREE(ldap_state->bind_secret);
1944 }
1945
1946 if ( ! anon) {
1947 ldap_state->bind_dn = SMB_STRDUP(dn);
1948 ldap_state->bind_secret = SMB_STRDUP(secret);
1949 }
1950
1951 return True;
1952 }