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s3-waf: use SAMBA3_*() build rules in source3/build
[Samba.git] / source3 / lib / smbldap.c
blob568a7ee6b93a959fe8af6c9765bf5c57f41e18ee
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 #include "secrets.h"
28 #include "../libcli/security/security.h"
29
30 /* Try not to hit the up or down server forever */
31
32 #define SMBLDAP_DONT_PING_TIME 10 /* ping only all 10 seconds */
33 #define SMBLDAP_NUM_RETRIES 8 /* retry only 8 times */
34
35 #define SMBLDAP_IDLE_TIME 150 /* After 2.5 minutes disconnect */
36
37
38 /* attributes used by Samba 2.2 */
39
40 ATTRIB_MAP_ENTRY attrib_map_v22[] = {
41 { LDAP_ATTR_UID, "uid" },
42 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
43 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
44 { LDAP_ATTR_UNIX_HOME, "homeDirectory" },
45 { LDAP_ATTR_PWD_LAST_SET, "pwdLastSet" },
46 { LDAP_ATTR_PWD_CAN_CHANGE, "pwdCanChange" },
47 { LDAP_ATTR_PWD_MUST_CHANGE, "pwdMustChange" },
48 { LDAP_ATTR_LOGON_TIME, "logonTime" },
49 { LDAP_ATTR_LOGOFF_TIME, "logoffTime" },
50 { LDAP_ATTR_KICKOFF_TIME, "kickoffTime" },
51 { LDAP_ATTR_CN, "cn" },
52 { LDAP_ATTR_SN, "sn" },
53 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
54 { LDAP_ATTR_HOME_PATH, "smbHome" },
55 { LDAP_ATTR_HOME_DRIVE, "homeDrive" },
56 { LDAP_ATTR_LOGON_SCRIPT, "scriptPath" },
57 { LDAP_ATTR_PROFILE_PATH, "profilePath" },
58 { LDAP_ATTR_DESC, "description" },
59 { LDAP_ATTR_USER_WKS, "userWorkstations"},
60 { LDAP_ATTR_USER_RID, "rid" },
61 { LDAP_ATTR_PRIMARY_GROUP_RID, "primaryGroupID"},
62 { LDAP_ATTR_LMPW, "lmPassword" },
63 { LDAP_ATTR_NTPW, "ntPassword" },
64 { LDAP_ATTR_DOMAIN, "domain" },
65 { LDAP_ATTR_OBJCLASS, "objectClass" },
66 { LDAP_ATTR_ACB_INFO, "acctFlags" },
67 { LDAP_ATTR_MOD_TIMESTAMP, "modifyTimestamp" },
68 { LDAP_ATTR_LIST_END, NULL }
69 };
70
71 ATTRIB_MAP_ENTRY attrib_map_to_delete_v22[] = {
72 { LDAP_ATTR_PWD_LAST_SET, "pwdLastSet" },
73 { LDAP_ATTR_PWD_CAN_CHANGE, "pwdCanChange" },
74 { LDAP_ATTR_PWD_MUST_CHANGE, "pwdMustChange" },
75 { LDAP_ATTR_LOGON_TIME, "logonTime" },
76 { LDAP_ATTR_LOGOFF_TIME, "logoffTime" },
77 { LDAP_ATTR_KICKOFF_TIME, "kickoffTime" },
78 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
79 { LDAP_ATTR_HOME_PATH, "smbHome" },
80 { LDAP_ATTR_HOME_DRIVE, "homeDrives" },
81 { LDAP_ATTR_LOGON_SCRIPT, "scriptPath" },
82 { LDAP_ATTR_PROFILE_PATH, "profilePath" },
83 { LDAP_ATTR_USER_WKS, "userWorkstations"},
84 { LDAP_ATTR_USER_RID, "rid" },
85 { LDAP_ATTR_PRIMARY_GROUP_RID, "primaryGroupID"},
86 { LDAP_ATTR_LMPW, "lmPassword" },
87 { LDAP_ATTR_NTPW, "ntPassword" },
88 { LDAP_ATTR_DOMAIN, "domain" },
89 { LDAP_ATTR_ACB_INFO, "acctFlags" },
90 { LDAP_ATTR_LIST_END, NULL }
91 };
92
93 /* attributes used by Samba 3.0's sambaSamAccount */
94
95 ATTRIB_MAP_ENTRY attrib_map_v30[] = {
96 { LDAP_ATTR_UID, "uid" },
97 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
98 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
99 { LDAP_ATTR_UNIX_HOME, "homeDirectory" },
100 { LDAP_ATTR_PWD_LAST_SET, "sambaPwdLastSet" },
101 { LDAP_ATTR_PWD_CAN_CHANGE, "sambaPwdCanChange" },
102 { LDAP_ATTR_PWD_MUST_CHANGE, "sambaPwdMustChange" },
103 { LDAP_ATTR_LOGON_TIME, "sambaLogonTime" },
104 { LDAP_ATTR_LOGOFF_TIME, "sambaLogoffTime" },
105 { LDAP_ATTR_KICKOFF_TIME, "sambaKickoffTime" },
106 { LDAP_ATTR_CN, "cn" },
107 { LDAP_ATTR_SN, "sn" },
108 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
109 { LDAP_ATTR_HOME_DRIVE, "sambaHomeDrive" },
110 { LDAP_ATTR_HOME_PATH, "sambaHomePath" },
111 { LDAP_ATTR_LOGON_SCRIPT, "sambaLogonScript" },
112 { LDAP_ATTR_PROFILE_PATH, "sambaProfilePath" },
113 { LDAP_ATTR_DESC, "description" },
114 { LDAP_ATTR_USER_WKS, "sambaUserWorkstations" },
115 { LDAP_ATTR_USER_SID, LDAP_ATTRIBUTE_SID },
116 { LDAP_ATTR_PRIMARY_GROUP_SID, "sambaPrimaryGroupSID" },
117 { LDAP_ATTR_LMPW, "sambaLMPassword" },
118 { LDAP_ATTR_NTPW, "sambaNTPassword" },
119 { LDAP_ATTR_DOMAIN, "sambaDomainName" },
120 { LDAP_ATTR_OBJCLASS, "objectClass" },
121 { LDAP_ATTR_ACB_INFO, "sambaAcctFlags" },
122 { LDAP_ATTR_MUNGED_DIAL, "sambaMungedDial" },
123 { LDAP_ATTR_BAD_PASSWORD_COUNT, "sambaBadPasswordCount" },
124 { LDAP_ATTR_BAD_PASSWORD_TIME, "sambaBadPasswordTime" },
125 { LDAP_ATTR_PWD_HISTORY, "sambaPasswordHistory" },
126 { LDAP_ATTR_MOD_TIMESTAMP, "modifyTimestamp" },
127 { LDAP_ATTR_LOGON_HOURS, "sambaLogonHours" },
128 { LDAP_ATTR_LIST_END, NULL }
129 };
130
131 ATTRIB_MAP_ENTRY attrib_map_to_delete_v30[] = {
132 { LDAP_ATTR_PWD_LAST_SET, "sambaPwdLastSet" },
133 { LDAP_ATTR_PWD_CAN_CHANGE, "sambaPwdCanChange" },
134 { LDAP_ATTR_PWD_MUST_CHANGE, "sambaPwdMustChange" },
135 { LDAP_ATTR_LOGON_TIME, "sambaLogonTime" },
136 { LDAP_ATTR_LOGOFF_TIME, "sambaLogoffTime" },
137 { LDAP_ATTR_KICKOFF_TIME, "sambaKickoffTime" },
138 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
139 { LDAP_ATTR_HOME_DRIVE, "sambaHomeDrive" },
140 { LDAP_ATTR_HOME_PATH, "sambaHomePath" },
141 { LDAP_ATTR_LOGON_SCRIPT, "sambaLogonScript" },
142 { LDAP_ATTR_PROFILE_PATH, "sambaProfilePath" },
143 { LDAP_ATTR_USER_WKS, "sambaUserWorkstations" },
144 { LDAP_ATTR_USER_SID, LDAP_ATTRIBUTE_SID },
145 { LDAP_ATTR_PRIMARY_GROUP_SID, "sambaPrimaryGroupSID" },
146 { LDAP_ATTR_LMPW, "sambaLMPassword" },
147 { LDAP_ATTR_NTPW, "sambaNTPassword" },
148 { LDAP_ATTR_DOMAIN, "sambaDomainName" },
149 { LDAP_ATTR_ACB_INFO, "sambaAcctFlags" },
150 { LDAP_ATTR_MUNGED_DIAL, "sambaMungedDial" },
151 { LDAP_ATTR_BAD_PASSWORD_COUNT, "sambaBadPasswordCount" },
152 { LDAP_ATTR_BAD_PASSWORD_TIME, "sambaBadPasswordTime" },
153 { LDAP_ATTR_PWD_HISTORY, "sambaPasswordHistory" },
154 { LDAP_ATTR_LOGON_HOURS, "sambaLogonHours" },
155 { LDAP_ATTR_LIST_END, NULL }
156 };
157
158 /* attributes used for allocating RIDs */
159
160 ATTRIB_MAP_ENTRY dominfo_attr_list[] = {
161 { LDAP_ATTR_DOMAIN, "sambaDomainName" },
162 { LDAP_ATTR_NEXT_RID, "sambaNextRid" },
163 { LDAP_ATTR_NEXT_USERRID, "sambaNextUserRid" },
164 { LDAP_ATTR_NEXT_GROUPRID, "sambaNextGroupRid" },
165 { LDAP_ATTR_DOM_SID, LDAP_ATTRIBUTE_SID },
166 { LDAP_ATTR_ALGORITHMIC_RID_BASE,"sambaAlgorithmicRidBase"},
167 { LDAP_ATTR_OBJCLASS, "objectClass" },
168 { LDAP_ATTR_LIST_END, NULL },
169 };
170
171 /* Samba 3.0 group mapping attributes */
172
173 ATTRIB_MAP_ENTRY groupmap_attr_list[] = {
174 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
175 { LDAP_ATTR_GROUP_SID, LDAP_ATTRIBUTE_SID },
176 { LDAP_ATTR_GROUP_TYPE, "sambaGroupType" },
177 { LDAP_ATTR_SID_LIST, "sambaSIDList" },
178 { LDAP_ATTR_DESC, "description" },
179 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
180 { LDAP_ATTR_CN, "cn" },
181 { LDAP_ATTR_OBJCLASS, "objectClass" },
182 { LDAP_ATTR_LIST_END, NULL }
183 };
184
185 ATTRIB_MAP_ENTRY groupmap_attr_list_to_delete[] = {
186 { LDAP_ATTR_GROUP_SID, LDAP_ATTRIBUTE_SID },
187 { LDAP_ATTR_GROUP_TYPE, "sambaGroupType" },
188 { LDAP_ATTR_DESC, "description" },
189 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
190 { LDAP_ATTR_SID_LIST, "sambaSIDList" },
191 { LDAP_ATTR_LIST_END, NULL }
192 };
193
194 /* idmap_ldap sambaUnixIdPool */
195
196 ATTRIB_MAP_ENTRY idpool_attr_list[] = {
197 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
198 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
199 { LDAP_ATTR_OBJCLASS, "objectClass" },
200 { LDAP_ATTR_LIST_END, NULL }
201 };
202
203 ATTRIB_MAP_ENTRY sidmap_attr_list[] = {
204 { LDAP_ATTR_SID, LDAP_ATTRIBUTE_SID },
205 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
206 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
207 { LDAP_ATTR_OBJCLASS, "objectClass" },
208 { LDAP_ATTR_LIST_END, NULL }
209 };
210
211 /**********************************************************************
212 perform a simple table lookup and return the attribute name
213 **********************************************************************/
214
215 const char* get_attr_key2string( ATTRIB_MAP_ENTRY table[], int key )
216 {
217 int i = 0;
218
219 while ( table[i].attrib != LDAP_ATTR_LIST_END ) {
220 if ( table[i].attrib == key )
221 return table[i].name;
222 i++;
223 }
224
225 return NULL;
226 }
227
228
229 /**********************************************************************
230 Return the list of attribute names from a mapping table
231 **********************************************************************/
232
233 const char** get_attr_list( TALLOC_CTX *mem_ctx, ATTRIB_MAP_ENTRY table[] )
234 {
235 const char **names;
236 int i = 0;
237
238 while ( table[i].attrib != LDAP_ATTR_LIST_END )
239 i++;
240 i++;
241
242 names = TALLOC_ARRAY( mem_ctx, const char*, i );
243 if ( !names ) {
244 DEBUG(0,("get_attr_list: out of memory\n"));
245 return NULL;
246 }
247
248 i = 0;
249 while ( table[i].attrib != LDAP_ATTR_LIST_END ) {
250 names[i] = talloc_strdup( names, table[i].name );
251 i++;
252 }
253 names[i] = NULL;
254
255 return names;
256 }
257
258 /*******************************************************************
259 Search an attribute and return the first value found.
260 ******************************************************************/
261
262 bool smbldap_get_single_attribute (LDAP * ldap_struct, LDAPMessage * entry,
263 const char *attribute, char *value,
264 int max_len)
265 {
266 char **values;
267
268 if ( !attribute )
269 return False;
270
271 value[0] = '\0';
272
273 if ((values = ldap_get_values (ldap_struct, entry, attribute)) == NULL) {
274 DEBUG (10, ("smbldap_get_single_attribute: [%s] = [<does not exist>]\n", attribute));
275
276 return False;
277 }
278
279 if (convert_string(CH_UTF8, CH_UNIX,values[0], -1, value, max_len, False) == (size_t)-1) {
280 DEBUG(1, ("smbldap_get_single_attribute: string conversion of [%s] = [%s] failed!\n",
281 attribute, values[0]));
282 ldap_value_free(values);
283 return False;
284 }
285
286 ldap_value_free(values);
287 #ifdef DEBUG_PASSWORDS
288 DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n", attribute, value));
289 #endif
290 return True;
291 }
292
293 char * smbldap_talloc_single_attribute(LDAP *ldap_struct, LDAPMessage *entry,
294 const char *attribute,
295 TALLOC_CTX *mem_ctx)
296 {
297 char **values;
298 char *result;
299 size_t converted_size;
300
301 if (attribute == NULL) {
302 return NULL;
303 }
304
305 values = ldap_get_values(ldap_struct, entry, attribute);
306
307 if (values == NULL) {
308 DEBUG(10, ("attribute %s does not exist\n", attribute));
309 return NULL;
310 }
311
312 if (ldap_count_values(values) != 1) {
313 DEBUG(10, ("attribute %s has %d values, expected only one\n",
314 attribute, ldap_count_values(values)));
315 ldap_value_free(values);
316 return NULL;
317 }
318
319 if (!pull_utf8_talloc(mem_ctx, &result, values[0], &converted_size)) {
320 DEBUG(10, ("pull_utf8_talloc failed\n"));
321 ldap_value_free(values);
322 return NULL;
323 }
324
325 ldap_value_free(values);
326
327 #ifdef DEBUG_PASSWORDS
328 DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n",
329 attribute, result));
330 #endif
331 return result;
332 }
333
334 char * smbldap_talloc_first_attribute(LDAP *ldap_struct, LDAPMessage *entry,
335 const char *attribute,
336 TALLOC_CTX *mem_ctx)
337 {
338 char **values;
339 char *result;
340 size_t converted_size;
341
342 if (attribute == NULL) {
343 return NULL;
344 }
345
346 values = ldap_get_values(ldap_struct, entry, attribute);
347
348 if (values == NULL) {
349 DEBUG(10, ("attribute %s does not exist\n", attribute));
350 return NULL;
351 }
352
353 if (!pull_utf8_talloc(mem_ctx, &result, values[0], &converted_size)) {
354 DEBUG(10, ("pull_utf8_talloc failed\n"));
355 ldap_value_free(values);
356 return NULL;
357 }
358
359 ldap_value_free(values);
360
361 #ifdef DEBUG_PASSWORDS
362 DEBUG (100, ("smbldap_get_first_attribute: [%s] = [%s]\n",
363 attribute, result));
364 #endif
365 return result;
366 }
367
368 char * smbldap_talloc_smallest_attribute(LDAP *ldap_struct, LDAPMessage *entry,
369 const char *attribute,
370 TALLOC_CTX *mem_ctx)
371 {
372 char **values;
373 char *result;
374 size_t converted_size;
375 int i, num_values;
376
377 if (attribute == NULL) {
378 return NULL;
379 }
380
381 values = ldap_get_values(ldap_struct, entry, attribute);
382
383 if (values == NULL) {
384 DEBUG(10, ("attribute %s does not exist\n", attribute));
385 return NULL;
386 }
387
388 if (!pull_utf8_talloc(mem_ctx, &result, values[0], &converted_size)) {
389 DEBUG(10, ("pull_utf8_talloc failed\n"));
390 ldap_value_free(values);
391 return NULL;
392 }
393
394 num_values = ldap_count_values(values);
395
396 for (i=1; i<num_values; i++) {
397 char *tmp;
398
399 if (!pull_utf8_talloc(mem_ctx, &tmp, values[i],
400 &converted_size)) {
401 DEBUG(10, ("pull_utf8_talloc failed\n"));
402 TALLOC_FREE(result);
403 ldap_value_free(values);
404 return NULL;
405 }
406
407 if (StrCaseCmp(tmp, result) < 0) {
408 TALLOC_FREE(result);
409 result = tmp;
410 } else {
411 TALLOC_FREE(tmp);
412 }
413 }
414
415 ldap_value_free(values);
416
417 #ifdef DEBUG_PASSWORDS
418 DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n",
419 attribute, result));
420 #endif
421 return result;
422 }
423
424 bool smbldap_talloc_single_blob(TALLOC_CTX *mem_ctx, LDAP *ld,
425 LDAPMessage *msg, const char *attrib,
426 DATA_BLOB *blob)
427 {
428 struct berval **values;
429
430 values = ldap_get_values_len(ld, msg, attrib);
431 if (!values) {
432 return false;
433 }
434
435 if (ldap_count_values_len(values) != 1) {
436 DEBUG(10, ("Expected one value for %s, got %d\n", attrib,
437 ldap_count_values_len(values)));
438 return false;
439 }
440
441 *blob = data_blob_talloc(mem_ctx, values[0]->bv_val,
442 values[0]->bv_len);
443 ldap_value_free_len(values);
444
445 return (blob->data != NULL);
446 }
447
448 bool smbldap_pull_sid(LDAP *ld, LDAPMessage *msg, const char *attrib,
449 struct dom_sid *sid)
450 {
451 DATA_BLOB blob;
452 bool ret;
453
454 if (!smbldap_talloc_single_blob(talloc_tos(), ld, msg, attrib,
455 &blob)) {
456 return false;
457 }
458 ret = sid_parse((char *)blob.data, blob.length, sid);
459 TALLOC_FREE(blob.data);
460 return ret;
461 }
462
463 static int ldapmsg_destructor(LDAPMessage **result) {
464 ldap_msgfree(*result);
465 return 0;
466 }
467
468 void talloc_autofree_ldapmsg(TALLOC_CTX *mem_ctx, LDAPMessage *result)
469 {
470 LDAPMessage **handle;
471
472 if (result == NULL) {
473 return;
474 }
475
476 handle = TALLOC_P(mem_ctx, LDAPMessage *);
477 SMB_ASSERT(handle != NULL);
478
479 *handle = result;
480 talloc_set_destructor(handle, ldapmsg_destructor);
481 }
482
483 static int ldapmod_destructor(LDAPMod ***mod) {
484 ldap_mods_free(*mod, True);
485 return 0;
486 }
487
488 void talloc_autofree_ldapmod(TALLOC_CTX *mem_ctx, LDAPMod **mod)
489 {
490 LDAPMod ***handle;
491
492 if (mod == NULL) {
493 return;
494 }
495
496 handle = TALLOC_P(mem_ctx, LDAPMod **);
497 SMB_ASSERT(handle != NULL);
498
499 *handle = mod;
500 talloc_set_destructor(handle, ldapmod_destructor);
501 }
502
503 /************************************************************************
504 Routine to manage the LDAPMod structure array
505 manage memory used by the array, by each struct, and values
506 ***********************************************************************/
507
508 void smbldap_set_mod (LDAPMod *** modlist, int modop, const char *attribute, const char *value)
509 {
510 LDAPMod **mods;
511 int i;
512 int j;
513
514 mods = *modlist;
515
516 /* sanity checks on the mod values */
517
518 if (attribute == NULL || *attribute == '\0') {
519 return;
520 }
521
522 #if 0 /* commented out after discussion with abartlet. Do not reenable.
523 left here so other do not re-add similar code --jerry */
524 if (value == NULL || *value == '\0')
525 return;
526 #endif
527
528 if (mods == NULL) {
529 mods = SMB_MALLOC_P(LDAPMod *);
530 if (mods == NULL) {
531 smb_panic("smbldap_set_mod: out of memory!");
532 /* notreached. */
533 }
534 mods[0] = NULL;
535 }
536
537 for (i = 0; mods[i] != NULL; ++i) {
538 if (mods[i]->mod_op == modop && strequal(mods[i]->mod_type, attribute))
539 break;
540 }
541
542 if (mods[i] == NULL) {
543 mods = SMB_REALLOC_ARRAY (mods, LDAPMod *, i + 2);
544 if (mods == NULL) {
545 smb_panic("smbldap_set_mod: out of memory!");
546 /* notreached. */
547 }
548 mods[i] = SMB_MALLOC_P(LDAPMod);
549 if (mods[i] == NULL) {
550 smb_panic("smbldap_set_mod: out of memory!");
551 /* notreached. */
552 }
553 mods[i]->mod_op = modop;
554 mods[i]->mod_values = NULL;
555 mods[i]->mod_type = SMB_STRDUP(attribute);
556 mods[i + 1] = NULL;
557 }
558
559 if (value != NULL) {
560 char *utf8_value = NULL;
561 size_t converted_size;
562
563 j = 0;
564 if (mods[i]->mod_values != NULL) {
565 for (; mods[i]->mod_values[j] != NULL; j++);
566 }
567 mods[i]->mod_values = SMB_REALLOC_ARRAY(mods[i]->mod_values, char *, j + 2);
568
569 if (mods[i]->mod_values == NULL) {
570 smb_panic("smbldap_set_mod: out of memory!");
571 /* notreached. */
572 }
573
574 if (!push_utf8_talloc(talloc_tos(), &utf8_value, value, &converted_size)) {
575 smb_panic("smbldap_set_mod: String conversion failure!");
576 /* notreached. */
577 }
578
579 mods[i]->mod_values[j] = SMB_STRDUP(utf8_value);
580 TALLOC_FREE(utf8_value);
581 SMB_ASSERT(mods[i]->mod_values[j] != NULL);
582
583 mods[i]->mod_values[j + 1] = NULL;
584 }
585 *modlist = mods;
586 }
587
588 /**********************************************************************
589 Set attribute to newval in LDAP, regardless of what value the
590 attribute had in LDAP before.
591 *********************************************************************/
592
593 void smbldap_make_mod(LDAP *ldap_struct, LDAPMessage *existing,
594 LDAPMod ***mods,
595 const char *attribute, const char *newval)
596 {
597 char oldval[2048]; /* current largest allowed value is mungeddial */
598 bool existed;
599
600 if (attribute == NULL) {
601 /* This can actually happen for ldapsam_compat where we for
602 * example don't have a password history */
603 return;
604 }
605
606 if (existing != NULL) {
607 existed = smbldap_get_single_attribute(ldap_struct, existing, attribute, oldval, sizeof(oldval));
608 } else {
609 existed = False;
610 *oldval = '\0';
611 }
612
613 /* all of our string attributes are case insensitive */
614
615 if (existed && newval && (StrCaseCmp(oldval, newval) == 0)) {
616
617 /* Believe it or not, but LDAP will deny a delete and
618 an add at the same time if the values are the
619 same... */
620 DEBUG(10,("smbldap_make_mod: attribute |%s| not changed.\n", attribute));
621 return;
622 }
623
624 if (existed) {
625 /* There has been no value before, so don't delete it.
626 * Here's a possible race: We might end up with
627 * duplicate attributes */
628 /* By deleting exactly the value we found in the entry this
629 * should be race-free in the sense that the LDAP-Server will
630 * deny the complete operation if somebody changed the
631 * attribute behind our back. */
632 /* This will also allow modifying single valued attributes
633 * in Novell NDS. In NDS you have to first remove attribute and then
634 * you could add new value */
635
636 DEBUG(10,("smbldap_make_mod: deleting attribute |%s| values |%s|\n", attribute, oldval));
637 smbldap_set_mod(mods, LDAP_MOD_DELETE, attribute, oldval);
638 }
639
640 /* Regardless of the real operation (add or modify)
641 we add the new value here. We rely on deleting
642 the old value, should it exist. */
643
644 if ((newval != NULL) && (strlen(newval) > 0)) {
645 DEBUG(10,("smbldap_make_mod: adding attribute |%s| value |%s|\n", attribute, newval));
646 smbldap_set_mod(mods, LDAP_MOD_ADD, attribute, newval);
647 }
648 }
649
650 /**********************************************************************
651 Some varients of the LDAP rebind code do not pass in the third 'arg'
652 pointer to a void*, so we try and work around it by assuming that the
653 value of the 'LDAP *' pointer is the same as the one we had passed in
654 **********************************************************************/
655
656 struct smbldap_state_lookup {
657 LDAP *ld;
658 struct smbldap_state *smbldap_state;
659 struct smbldap_state_lookup *prev, *next;
660 };
661
662 static struct smbldap_state_lookup *smbldap_state_lookup_list;
663
664 static struct smbldap_state *smbldap_find_state(LDAP *ld)
665 {
666 struct smbldap_state_lookup *t;
667
668 for (t = smbldap_state_lookup_list; t; t = t->next) {
669 if (t->ld == ld) {
670 return t->smbldap_state;
671 }
672 }
673 return NULL;
674 }
675
676 static void smbldap_delete_state(struct smbldap_state *smbldap_state)
677 {
678 struct smbldap_state_lookup *t;
679
680 for (t = smbldap_state_lookup_list; t; t = t->next) {
681 if (t->smbldap_state == smbldap_state) {
682 DLIST_REMOVE(smbldap_state_lookup_list, t);
683 SAFE_FREE(t);
684 return;
685 }
686 }
687 }
688
689 static void smbldap_store_state(LDAP *ld, struct smbldap_state *smbldap_state)
690 {
691 struct smbldap_state *tmp_ldap_state;
692 struct smbldap_state_lookup *t;
693
694 if ((tmp_ldap_state = smbldap_find_state(ld))) {
695 SMB_ASSERT(tmp_ldap_state == smbldap_state);
696 return;
697 }
698
699 t = SMB_XMALLOC_P(struct smbldap_state_lookup);
700 ZERO_STRUCTP(t);
701
702 DLIST_ADD_END(smbldap_state_lookup_list, t, struct smbldap_state_lookup *);
703 t->ld = ld;
704 t->smbldap_state = smbldap_state;
705 }
706
707 /********************************************************************
708 start TLS on an existing LDAP connection
709 *******************************************************************/
710
711 int smb_ldap_start_tls(LDAP *ldap_struct, int version)
712 {
713 #ifdef LDAP_OPT_X_TLS
714 int rc;
715 #endif
716
717 if (lp_ldap_ssl() != LDAP_SSL_START_TLS) {
718 return LDAP_SUCCESS;
719 }
720
721 #ifdef LDAP_OPT_X_TLS
722 if (version != LDAP_VERSION3) {
723 DEBUG(0, ("Need LDAPv3 for Start TLS\n"));
724 return LDAP_OPERATIONS_ERROR;
725 }
726
727 if ((rc = ldap_start_tls_s (ldap_struct, NULL, NULL)) != LDAP_SUCCESS) {
728 DEBUG(0,("Failed to issue the StartTLS instruction: %s\n",
729 ldap_err2string(rc)));
730 return rc;
731 }
732
733 DEBUG (3, ("StartTLS issued: using a TLS connection\n"));
734 return LDAP_SUCCESS;
735 #else
736 DEBUG(0,("StartTLS not supported by LDAP client libraries!\n"));
737 return LDAP_OPERATIONS_ERROR;
738 #endif
739 }
740
741 /********************************************************************
742 setup a connection to the LDAP server based on a uri
743 *******************************************************************/
744
745 static int smb_ldap_setup_conn(LDAP **ldap_struct, const char *uri)
746 {
747 int rc;
748
749 DEBUG(10, ("smb_ldap_setup_connection: %s\n", uri));
750
751 #ifdef HAVE_LDAP_INITIALIZE
752
753 rc = ldap_initialize(ldap_struct, uri);
754 if (rc) {
755 DEBUG(0, ("ldap_initialize: %s\n", ldap_err2string(rc)));
756 return rc;
757 }
758
759 if (lp_ldap_follow_referral() != Auto) {
760 rc = ldap_set_option(*ldap_struct, LDAP_OPT_REFERRALS,
761 lp_ldap_follow_referral() ? LDAP_OPT_ON : LDAP_OPT_OFF);
762 if (rc != LDAP_SUCCESS)
763 DEBUG(0, ("Failed to set LDAP_OPT_REFERRALS: %s\n",
764 ldap_err2string(rc)));
765 }
766
767 return LDAP_SUCCESS;
768 #else
769
770 /* Parse the string manually */
771
772 {
773 int port = 0;
774 fstring protocol;
775 fstring host;
776 SMB_ASSERT(sizeof(protocol)>10 && sizeof(host)>254);
777
778
779 /* skip leading "URL:" (if any) */
780 if ( strnequal( uri, "URL:", 4 ) ) {
781 uri += 4;
782 }
783
784 sscanf(uri, "%10[^:]://%254[^:/]:%d", protocol, host, &port);
785
786 if (port == 0) {
787 if (strequal(protocol, "ldap")) {
788 port = LDAP_PORT;
789 } else if (strequal(protocol, "ldaps")) {
790 port = LDAPS_PORT;
791 } else {
792 DEBUG(0, ("unrecognised protocol (%s)!\n", protocol));
793 }
794 }
795
796 if ((*ldap_struct = ldap_init(host, port)) == NULL) {
797 DEBUG(0, ("ldap_init failed !\n"));
798 return LDAP_OPERATIONS_ERROR;
799 }
800
801 if (strequal(protocol, "ldaps")) {
802 #ifdef LDAP_OPT_X_TLS
803 int tls = LDAP_OPT_X_TLS_HARD;
804 if (ldap_set_option (*ldap_struct, LDAP_OPT_X_TLS, &tls) != LDAP_SUCCESS)
805 {
806 DEBUG(0, ("Failed to setup a TLS session\n"));
807 }
808
809 DEBUG(3,("LDAPS option set...!\n"));
810 #else
811 DEBUG(0,("smbldap_open_connection: Secure connection not supported by LDAP client libraries!\n"));
812 return LDAP_OPERATIONS_ERROR;
813 #endif /* LDAP_OPT_X_TLS */
814 }
815 }
816 #endif /* HAVE_LDAP_INITIALIZE */
817
818 /* now set connection timeout */
819 #ifdef LDAP_X_OPT_CONNECT_TIMEOUT /* Netscape */
820 {
821 int ct = lp_ldap_connection_timeout()*1000;
822 rc = ldap_set_option(*ldap_struct, LDAP_X_OPT_CONNECT_TIMEOUT, &ct);
823 if (rc != LDAP_SUCCESS) {
824 DEBUG(0,("Failed to setup an ldap connection timeout %d: %s\n",
825 ct, ldap_err2string(rc)));
826 }
827 }
828 #elif defined (LDAP_OPT_NETWORK_TIMEOUT) /* OpenLDAP */
829 {
830 struct timeval ct;
831 ct.tv_usec = 0;
832 ct.tv_sec = lp_ldap_connection_timeout();
833 rc = ldap_set_option(*ldap_struct, LDAP_OPT_NETWORK_TIMEOUT, &ct);
834 if (rc != LDAP_SUCCESS) {
835 DEBUG(0,("Failed to setup an ldap connection timeout %d: %s\n",
836 (int)ct.tv_sec, ldap_err2string(rc)));
837 }
838 }
839 #endif
840
841 return LDAP_SUCCESS;
842 }
843
844 /********************************************************************
845 try to upgrade to Version 3 LDAP if not already, in either case return current
846 version
847 *******************************************************************/
848
849 static int smb_ldap_upgrade_conn(LDAP *ldap_struct, int *new_version)
850 {
851 int version;
852 int rc;
853
854 /* assume the worst */
855 *new_version = LDAP_VERSION2;
856
857 rc = ldap_get_option(ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
858 if (rc) {
859 return rc;
860 }
861
862 if (version == LDAP_VERSION3) {
863 *new_version = LDAP_VERSION3;
864 return LDAP_SUCCESS;
865 }
866
867 /* try upgrade */
868 version = LDAP_VERSION3;
869 rc = ldap_set_option (ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
870 if (rc) {
871 return rc;
872 }
873
874 *new_version = LDAP_VERSION3;
875 return LDAP_SUCCESS;
876 }
877
878 /*******************************************************************
879 open a connection to the ldap server (just until the bind)
880 ******************************************************************/
881
882 int smb_ldap_setup_full_conn(LDAP **ldap_struct, const char *uri)
883 {
884 int rc, version;
885
886 rc = smb_ldap_setup_conn(ldap_struct, uri);
887 if (rc) {
888 return rc;
889 }
890
891 rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
892 if (rc) {
893 return rc;
894 }
895
896 rc = smb_ldap_start_tls(*ldap_struct, version);
897 if (rc) {
898 return rc;
899 }
900
901 return LDAP_SUCCESS;
902 }
903
904 /*******************************************************************
905 open a connection to the ldap server.
906 ******************************************************************/
907 static int smbldap_open_connection (struct smbldap_state *ldap_state)
908
909 {
910 int rc = LDAP_SUCCESS;
911 int version;
912 int deref;
913 LDAP **ldap_struct = &ldap_state->ldap_struct;
914
915 rc = smb_ldap_setup_conn(ldap_struct, ldap_state->uri);
916 if (rc) {
917 return rc;
918 }
919
920 /* Store the LDAP pointer in a lookup list */
921
922 smbldap_store_state(*ldap_struct, ldap_state);
923
924 /* Upgrade to LDAPv3 if possible */
925
926 rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
927 if (rc) {
928 return rc;
929 }
930
931 /* Start TLS if required */
932
933 rc = smb_ldap_start_tls(*ldap_struct, version);
934 if (rc) {
935 return rc;
936 }
937
938 /* Set alias dereferencing method */
939 deref = lp_ldap_deref();
940 if (deref != -1) {
941 if (ldap_set_option (*ldap_struct, LDAP_OPT_DEREF, &deref) != LDAP_OPT_SUCCESS) {
942 DEBUG(1,("smbldap_open_connection: Failed to set dereferencing method: %d\n", deref));
943 } else {
944 DEBUG(5,("Set dereferencing method: %d\n", deref));
945 }
946 }
947
948 DEBUG(2, ("smbldap_open_connection: connection opened\n"));
949 return rc;
950 }
951
952 /*******************************************************************
953 a rebind function for authenticated referrals
954 This version takes a void* that we can shove useful stuff in :-)
955 ******************************************************************/
956 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
957 #else
958 static int rebindproc_with_state (LDAP * ld, char **whop, char **credp,
959 int *methodp, int freeit, void *arg)
960 {
961 struct smbldap_state *ldap_state = arg;
962 struct timespec ts;
963
964 /** @TODO Should we be doing something to check what servers we rebind to?
965 Could we get a referral to a machine that we don't want to give our
966 username and password to? */
967
968 if (freeit) {
969 SAFE_FREE(*whop);
970 if (*credp) {
971 memset(*credp, '\0', strlen(*credp));
972 }
973 SAFE_FREE(*credp);
974 } else {
975 DEBUG(5,("rebind_proc_with_state: Rebinding as \"%s\"\n",
976 ldap_state->bind_dn?ldap_state->bind_dn:"[Anonymous bind]"));
977
978 if (ldap_state->anonymous) {
979 *whop = NULL;
980 *credp = NULL;
981 } else {
982 *whop = SMB_STRDUP(ldap_state->bind_dn);
983 if (!*whop) {
984 return LDAP_NO_MEMORY;
985 }
986 *credp = SMB_STRDUP(ldap_state->bind_secret);
987 if (!*credp) {
988 SAFE_FREE(*whop);
989 return LDAP_NO_MEMORY;
990 }
991 }
992 *methodp = LDAP_AUTH_SIMPLE;
993 }
994
995 clock_gettime_mono(&ts);
996 ldap_state->last_rebind = convert_timespec_to_timeval(ts);
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 struct timespec ts;
1017 int version;
1018
1019 DEBUG(5,("rebindproc_connect_with_state: Rebinding to %s as \"%s\"\n",
1020 url, ldap_state->bind_dn?ldap_state->bind_dn:"[Anonymous bind]"));
1021
1022 /* call START_TLS again (ldaps:// is handled by the OpenLDAP library
1023 * itself) before rebinding to another LDAP server to avoid to expose
1024 * our credentials. At least *try* to secure the connection - Guenther */
1025
1026 smb_ldap_upgrade_conn(ldap_struct, &version);
1027 smb_ldap_start_tls(ldap_struct, version);
1028
1029 /** @TODO Should we be doing something to check what servers we rebind to?
1030 Could we get a referral to a machine that we don't want to give our
1031 username and password to? */
1032
1033 rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
1034
1035 /* only set the last rebind timestamp when we did rebind after a
1036 * non-read LDAP operation. That way we avoid the replication sleep
1037 * after a simple redirected search operation - Guenther */
1038
1039 switch (request) {
1040
1041 case LDAP_REQ_MODIFY:
1042 case LDAP_REQ_ADD:
1043 case LDAP_REQ_DELETE:
1044 case LDAP_REQ_MODDN:
1045 case LDAP_REQ_EXTENDED:
1046 DEBUG(10,("rebindproc_connect_with_state: "
1047 "setting last_rebind timestamp "
1048 "(req: 0x%02x)\n", (unsigned int)request));
1049 clock_gettime_mono(&ts);
1050 ldap_state->last_rebind = convert_timespec_to_timeval(ts);
1051 break;
1052 default:
1053 ZERO_STRUCT(ldap_state->last_rebind);
1054 break;
1055 }
1056
1057 return rc;
1058 }
1059 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1060
1061 /*******************************************************************
1062 Add a rebind function for authenticated referrals
1063 ******************************************************************/
1064 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
1065 #else
1066 # if LDAP_SET_REBIND_PROC_ARGS == 2
1067 static int rebindproc (LDAP *ldap_struct, char **whop, char **credp,
1068 int *method, int freeit )
1069 {
1070 struct smbldap_state *ldap_state = smbldap_find_state(ldap_struct);
1071
1072 return rebindproc_with_state(ldap_struct, whop, credp,
1073 method, freeit, ldap_state);
1074 }
1075 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
1076 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1077
1078 /*******************************************************************
1079 a rebind function for authenticated referrals
1080 this also does the connection, but no void*.
1081 ******************************************************************/
1082 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
1083 # if LDAP_SET_REBIND_PROC_ARGS == 2
1084 static int rebindproc_connect (LDAP * ld, LDAP_CONST char *url, int request,
1085 ber_int_t msgid)
1086 {
1087 struct smbldap_state *ldap_state = smbldap_find_state(ld);
1088
1089 return rebindproc_connect_with_state(ld, url, (ber_tag_t)request, msgid,
1090 ldap_state);
1091 }
1092 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
1093 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1094
1095 /*******************************************************************
1096 connect to the ldap server under system privilege.
1097 ******************************************************************/
1098 static int smbldap_connect_system(struct smbldap_state *ldap_state, LDAP * ldap_struct)
1099 {
1100 int rc;
1101 int version;
1102
1103 if (!ldap_state->anonymous && !ldap_state->bind_dn) {
1104 char *bind_dn = NULL;
1105 char *bind_secret = NULL;
1106
1107 /* get the default dn and password only if they are not set already */
1108 if (!fetch_ldap_pw(&bind_dn, &bind_secret)) {
1109 DEBUG(0, ("ldap_connect_system: Failed to retrieve password from secrets.tdb\n"));
1110 return LDAP_INVALID_CREDENTIALS;
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 return rc;
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 return rc;
1172 }
1173
1174 static void smbldap_idle_fn(struct event_context *event_ctx,
1175 struct timed_event *te,
1176 struct timeval now_abs,
1177 void *private_data);
1178
1179 /**********************************************************************
1180 Connect to LDAP server (called before every ldap operation)
1181 *********************************************************************/
1182 static int smbldap_open(struct smbldap_state *ldap_state)
1183 {
1184 int rc, opt_rc;
1185 bool reopen = False;
1186 SMB_ASSERT(ldap_state);
1187
1188 if ((ldap_state->ldap_struct != NULL) && ((ldap_state->last_ping + SMBLDAP_DONT_PING_TIME) < time_mono(NULL))) {
1189
1190 #ifdef HAVE_UNIXSOCKET
1191 struct sockaddr_un addr;
1192 #else
1193 struct sockaddr addr;
1194 #endif
1195 socklen_t len = sizeof(addr);
1196 int sd;
1197
1198 opt_rc = ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_DESC, &sd);
1199 if (opt_rc == 0 && (getpeername(sd, (struct sockaddr *) &addr, &len)) < 0 )
1200 reopen = True;
1201
1202 #ifdef HAVE_UNIXSOCKET
1203 if (opt_rc == 0 && addr.sun_family == AF_UNIX)
1204 reopen = True;
1205 #endif
1206 if (reopen) {
1207 /* the other end has died. reopen. */
1208 ldap_unbind(ldap_state->ldap_struct);
1209 ldap_state->ldap_struct = NULL;
1210 ldap_state->last_ping = (time_t)0;
1211 } else {
1212 ldap_state->last_ping = time_mono(NULL);
1213 }
1214 }
1215
1216 if (ldap_state->ldap_struct != NULL) {
1217 DEBUG(11,("smbldap_open: already connected to the LDAP server\n"));
1218 return LDAP_SUCCESS;
1219 }
1220
1221 if ((rc = smbldap_open_connection(ldap_state))) {
1222 return rc;
1223 }
1224
1225 if ((rc = smbldap_connect_system(ldap_state, ldap_state->ldap_struct))) {
1226 ldap_unbind(ldap_state->ldap_struct);
1227 ldap_state->ldap_struct = NULL;
1228 return rc;
1229 }
1230
1231
1232 ldap_state->last_ping = time_mono(NULL);
1233 ldap_state->pid = sys_getpid();
1234
1235 TALLOC_FREE(ldap_state->idle_event);
1236
1237 if (ldap_state->event_context != NULL) {
1238 ldap_state->idle_event = event_add_timed(
1239 ldap_state->event_context, NULL,
1240 timeval_current_ofs(SMBLDAP_IDLE_TIME, 0),
1241 smbldap_idle_fn, ldap_state);
1242 }
1243
1244 DEBUG(4,("The LDAP server is successfully connected\n"));
1245
1246 return LDAP_SUCCESS;
1247 }
1248
1249 /**********************************************************************
1250 Disconnect from LDAP server
1251 *********************************************************************/
1252 static NTSTATUS smbldap_close(struct smbldap_state *ldap_state)
1253 {
1254 if (!ldap_state)
1255 return NT_STATUS_INVALID_PARAMETER;
1256
1257 if (ldap_state->ldap_struct != NULL) {
1258 ldap_unbind(ldap_state->ldap_struct);
1259 ldap_state->ldap_struct = NULL;
1260 }
1261
1262 smbldap_delete_state(ldap_state);
1263
1264 DEBUG(5,("The connection to the LDAP server was closed\n"));
1265 /* maybe free the results here --metze */
1266
1267 return NT_STATUS_OK;
1268 }
1269
1270 static bool got_alarm;
1271
1272 static void (*old_handler)(int);
1273
1274 static void gotalarm_sig(int dummy)
1275 {
1276 got_alarm = True;
1277 }
1278
1279 static int another_ldap_try(struct smbldap_state *ldap_state, int *rc,
1280 int *attempts, time_t endtime)
1281 {
1282 time_t now = time_mono(NULL);
1283 int open_rc = LDAP_SERVER_DOWN;
1284
1285 if (*rc != LDAP_SERVER_DOWN)
1286 goto no_next;
1287
1288 if (now >= endtime) {
1289 smbldap_close(ldap_state);
1290 *rc = LDAP_TIMEOUT;
1291 goto no_next;
1292 }
1293
1294 if (*attempts == 0) {
1295 got_alarm = False;
1296 old_handler = CatchSignal(SIGALRM, gotalarm_sig);
1297 alarm(endtime - now);
1298
1299 if (ldap_state->pid != sys_getpid())
1300 smbldap_close(ldap_state);
1301 }
1302
1303 while (1) {
1304
1305 if (*attempts != 0)
1306 smb_msleep(1000);
1307
1308 *attempts += 1;
1309
1310 open_rc = smbldap_open(ldap_state);
1311
1312 if (open_rc == LDAP_SUCCESS) {
1313 ldap_state->last_use = now;
1314 return True;
1315 }
1316
1317 if (open_rc == LDAP_INSUFFICIENT_ACCESS) {
1318 /* The fact that we are non-root or any other
1319 * access-denied condition will not change in the next
1320 * round of trying */
1321 *rc = open_rc;
1322 break;
1323 }
1324
1325 if (got_alarm) {
1326 *rc = LDAP_TIMEOUT;
1327 break;
1328 }
1329
1330 if (open_rc != LDAP_SUCCESS) {
1331 DEBUG(1, ("Connection to LDAP server failed for the "
1332 "%d try!\n", *attempts));
1333 }
1334 }
1335
1336 no_next:
1337 CatchSignal(SIGALRM, old_handler);
1338 alarm(0);
1339 ldap_state->last_use = now;
1340 return False;
1341 }
1342
1343 /*********************************************************************
1344 ********************************************************************/
1345
1346 static int smbldap_search_ext(struct smbldap_state *ldap_state,
1347 const char *base, int scope, const char *filter,
1348 const char *attrs[], int attrsonly,
1349 LDAPControl **sctrls, LDAPControl **cctrls,
1350 int sizelimit, LDAPMessage **res)
1351 {
1352 int rc = LDAP_SERVER_DOWN;
1353 int attempts = 0;
1354 char *utf8_filter;
1355 time_t endtime = time_mono(NULL)+lp_ldap_timeout();
1356 struct timeval timeout;
1357 size_t converted_size;
1358
1359 SMB_ASSERT(ldap_state);
1360
1361 DEBUG(5,("smbldap_search_ext: base => [%s], filter => [%s], "
1362 "scope => [%d]\n", base, filter, scope));
1363
1364 if (ldap_state->last_rebind.tv_sec > 0) {
1365 struct timeval tval;
1366 struct timespec ts;
1367 int64_t tdiff = 0;
1368 int sleep_time = 0;
1369
1370 clock_gettime_mono(&ts);
1371 tval = convert_timespec_to_timeval(ts);
1372
1373 tdiff = usec_time_diff(&tval, &ldap_state->last_rebind);
1374 tdiff /= 1000; /* Convert to milliseconds. */
1375
1376 sleep_time = lp_ldap_replication_sleep()-(int)tdiff;
1377 sleep_time = MIN(sleep_time, MAX_LDAP_REPLICATION_SLEEP_TIME);
1378
1379 if (sleep_time > 0) {
1380 /* we wait for the LDAP replication */
1381 DEBUG(5,("smbldap_search_ext: waiting %d milliseconds "
1382 "for LDAP replication.\n",sleep_time));
1383 smb_msleep(sleep_time);
1384 DEBUG(5,("smbldap_search_ext: go on!\n"));
1385 }
1386 ZERO_STRUCT(ldap_state->last_rebind);
1387 }
1388
1389 if (!push_utf8_talloc(talloc_tos(), &utf8_filter, filter, &converted_size)) {
1390 return LDAP_NO_MEMORY;
1391 }
1392
1393 /* Setup timeout for the ldap_search_ext_s call - local and remote. */
1394 timeout.tv_sec = lp_ldap_timeout();
1395 timeout.tv_usec = 0;
1396
1397 /* Setup alarm timeout.... Do we need both of these ? JRA.
1398 * Yes, I think we do need both of these. The server timeout only
1399 * covers the case where the server's operation takes too long. It
1400 * does not cover the case where the request hangs on its way to the
1401 * server. The server side timeout is not strictly necessary, it's
1402 * just a bit more kind to the server. VL. */
1403
1404 got_alarm = 0;
1405 CatchSignal(SIGALRM, gotalarm_sig);
1406 alarm(lp_ldap_timeout());
1407 /* End setup timeout. */
1408
1409 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1410 rc = ldap_search_ext_s(ldap_state->ldap_struct, base, scope,
1411 utf8_filter,
1412 CONST_DISCARD(char **, attrs),
1413 attrsonly, sctrls, cctrls, &timeout,
1414 sizelimit, res);
1415 if (rc != LDAP_SUCCESS) {
1416 char *ld_error = NULL;
1417 int ld_errno;
1418
1419 ldap_get_option(ldap_state->ldap_struct,
1420 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1421
1422 ldap_get_option(ldap_state->ldap_struct,
1423 LDAP_OPT_ERROR_STRING, &ld_error);
1424 DEBUG(10, ("Failed search for base: %s, error: %d (%s) "
1425 "(%s)\n", base, ld_errno,
1426 ldap_err2string(rc),
1427 ld_error ? ld_error : "unknown"));
1428 SAFE_FREE(ld_error);
1429
1430 if (ld_errno == LDAP_SERVER_DOWN) {
1431 ldap_unbind(ldap_state->ldap_struct);
1432 ldap_state->ldap_struct = NULL;
1433 }
1434 }
1435 }
1436
1437 TALLOC_FREE(utf8_filter);
1438
1439 /* Teardown timeout. */
1440 CatchSignal(SIGALRM, SIG_IGN);
1441 alarm(0);
1442
1443 if (got_alarm != 0)
1444 return LDAP_TIMELIMIT_EXCEEDED;
1445
1446 return rc;
1447 }
1448
1449 int smbldap_search(struct smbldap_state *ldap_state,
1450 const char *base, int scope, const char *filter,
1451 const char *attrs[], int attrsonly,
1452 LDAPMessage **res)
1453 {
1454 return smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1455 attrsonly, NULL, NULL, LDAP_NO_LIMIT, res);
1456 }
1457
1458 int smbldap_search_paged(struct smbldap_state *ldap_state,
1459 const char *base, int scope, const char *filter,
1460 const char **attrs, int attrsonly, int pagesize,
1461 LDAPMessage **res, void **cookie)
1462 {
1463 LDAPControl pr;
1464 LDAPControl **rcontrols;
1465 LDAPControl *controls[2] = { NULL, NULL};
1466 BerElement *cookie_be = NULL;
1467 struct berval *cookie_bv = NULL;
1468 int tmp = 0, i, rc;
1469 bool critical = True;
1470
1471 *res = NULL;
1472
1473 DEBUG(3,("smbldap_search_paged: base => [%s], filter => [%s],"
1474 "scope => [%d], pagesize => [%d]\n",
1475 base, filter, scope, pagesize));
1476
1477 cookie_be = ber_alloc_t(LBER_USE_DER);
1478 if (cookie_be == NULL) {
1479 DEBUG(0,("smbldap_create_page_control: ber_alloc_t returns "
1480 "NULL\n"));
1481 return LDAP_NO_MEMORY;
1482 }
1483
1484 /* construct cookie */
1485 if (*cookie != NULL) {
1486 ber_printf(cookie_be, "{iO}", (ber_int_t) pagesize, *cookie);
1487 ber_bvfree((struct berval *)*cookie); /* don't need it from last time */
1488 *cookie = NULL;
1489 } else {
1490 ber_printf(cookie_be, "{io}", (ber_int_t) pagesize, "", 0);
1491 }
1492 ber_flatten(cookie_be, &cookie_bv);
1493
1494 pr.ldctl_oid = CONST_DISCARD(char *, ADS_PAGE_CTL_OID);
1495 pr.ldctl_iscritical = (char) critical;
1496 pr.ldctl_value.bv_len = cookie_bv->bv_len;
1497 pr.ldctl_value.bv_val = cookie_bv->bv_val;
1498
1499 controls[0] = &pr;
1500 controls[1] = NULL;
1501
1502 rc = smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1503 0, controls, NULL, LDAP_NO_LIMIT, res);
1504
1505 ber_free(cookie_be, 1);
1506 ber_bvfree(cookie_bv);
1507
1508 if (rc != 0) {
1509 DEBUG(3,("smbldap_search_paged: smbldap_search_ext(%s) "
1510 "failed with [%s]\n", filter, ldap_err2string(rc)));
1511 goto done;
1512 }
1513
1514 DEBUG(3,("smbldap_search_paged: search was successful\n"));
1515
1516 rc = ldap_parse_result(ldap_state->ldap_struct, *res, NULL, NULL,
1517 NULL, NULL, &rcontrols, 0);
1518 if (rc != 0) {
1519 DEBUG(3,("smbldap_search_paged: ldap_parse_result failed " \
1520 "with [%s]\n", ldap_err2string(rc)));
1521 goto done;
1522 }
1523
1524 if (rcontrols == NULL)
1525 goto done;
1526
1527 for (i=0; rcontrols[i]; i++) {
1528
1529 if (strcmp(ADS_PAGE_CTL_OID, rcontrols[i]->ldctl_oid) != 0)
1530 continue;
1531
1532 cookie_be = ber_init(&rcontrols[i]->ldctl_value);
1533 ber_scanf(cookie_be,"{iO}", &tmp, &cookie_bv);
1534 /* the berval is the cookie, but must be freed when it is all
1535 done */
1536 if (cookie_bv->bv_len)
1537 *cookie=ber_bvdup(cookie_bv);
1538 else
1539 *cookie=NULL;
1540 ber_bvfree(cookie_bv);
1541 ber_free(cookie_be, 1);
1542 break;
1543 }
1544 ldap_controls_free(rcontrols);
1545 done:
1546 return rc;
1547 }
1548
1549 int smbldap_modify(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1550 {
1551 int rc = LDAP_SERVER_DOWN;
1552 int attempts = 0;
1553 char *utf8_dn;
1554 time_t endtime = time_mono(NULL)+lp_ldap_timeout();
1555 size_t converted_size;
1556
1557 SMB_ASSERT(ldap_state);
1558
1559 DEBUG(5,("smbldap_modify: dn => [%s]\n", dn ));
1560
1561 if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
1562 return LDAP_NO_MEMORY;
1563 }
1564
1565 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1566 rc = ldap_modify_s(ldap_state->ldap_struct, utf8_dn, attrs);
1567 if (rc != LDAP_SUCCESS) {
1568 char *ld_error = NULL;
1569 int ld_errno;
1570
1571 ldap_get_option(ldap_state->ldap_struct,
1572 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1573
1574 ldap_get_option(ldap_state->ldap_struct,
1575 LDAP_OPT_ERROR_STRING, &ld_error);
1576 DEBUG(10, ("Failed to modify dn: %s, error: %d (%s) "
1577 "(%s)\n", dn, ld_errno,
1578 ldap_err2string(rc),
1579 ld_error ? ld_error : "unknown"));
1580 SAFE_FREE(ld_error);
1581
1582 if (ld_errno == LDAP_SERVER_DOWN) {
1583 ldap_unbind(ldap_state->ldap_struct);
1584 ldap_state->ldap_struct = NULL;
1585 }
1586 }
1587 }
1588
1589 TALLOC_FREE(utf8_dn);
1590 return rc;
1591 }
1592
1593 int smbldap_add(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1594 {
1595 int rc = LDAP_SERVER_DOWN;
1596 int attempts = 0;
1597 char *utf8_dn;
1598 time_t endtime = time_mono(NULL)+lp_ldap_timeout();
1599 size_t converted_size;
1600
1601 SMB_ASSERT(ldap_state);
1602
1603 DEBUG(5,("smbldap_add: dn => [%s]\n", dn ));
1604
1605 if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
1606 return LDAP_NO_MEMORY;
1607 }
1608
1609 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1610 rc = ldap_add_s(ldap_state->ldap_struct, utf8_dn, attrs);
1611 if (rc != LDAP_SUCCESS) {
1612 char *ld_error = NULL;
1613 int ld_errno;
1614
1615 ldap_get_option(ldap_state->ldap_struct,
1616 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1617
1618 ldap_get_option(ldap_state->ldap_struct,
1619 LDAP_OPT_ERROR_STRING, &ld_error);
1620 DEBUG(10, ("Failed to add dn: %s, error: %d (%s) "
1621 "(%s)\n", dn, ld_errno,
1622 ldap_err2string(rc),
1623 ld_error ? ld_error : "unknown"));
1624 SAFE_FREE(ld_error);
1625
1626 if (ld_errno == LDAP_SERVER_DOWN) {
1627 ldap_unbind(ldap_state->ldap_struct);
1628 ldap_state->ldap_struct = NULL;
1629 }
1630 }
1631 }
1632
1633 TALLOC_FREE(utf8_dn);
1634 return rc;
1635 }
1636
1637 int smbldap_delete(struct smbldap_state *ldap_state, const char *dn)
1638 {
1639 int rc = LDAP_SERVER_DOWN;
1640 int attempts = 0;
1641 char *utf8_dn;
1642 time_t endtime = time_mono(NULL)+lp_ldap_timeout();
1643 size_t converted_size;
1644
1645 SMB_ASSERT(ldap_state);
1646
1647 DEBUG(5,("smbldap_delete: dn => [%s]\n", dn ));
1648
1649 if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
1650 return LDAP_NO_MEMORY;
1651 }
1652
1653 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1654 rc = ldap_delete_s(ldap_state->ldap_struct, utf8_dn);
1655 if (rc != LDAP_SUCCESS) {
1656 char *ld_error = NULL;
1657 int ld_errno;
1658
1659 ldap_get_option(ldap_state->ldap_struct,
1660 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1661
1662 ldap_get_option(ldap_state->ldap_struct,
1663 LDAP_OPT_ERROR_STRING, &ld_error);
1664 DEBUG(10, ("Failed to delete dn: %s, error: %d (%s) "
1665 "(%s)\n", dn, ld_errno,
1666 ldap_err2string(rc),
1667 ld_error ? ld_error : "unknown"));
1668 SAFE_FREE(ld_error);
1669
1670 if (ld_errno == LDAP_SERVER_DOWN) {
1671 ldap_unbind(ldap_state->ldap_struct);
1672 ldap_state->ldap_struct = NULL;
1673 }
1674 }
1675 }
1676
1677 TALLOC_FREE(utf8_dn);
1678 return rc;
1679 }
1680
1681 int smbldap_extended_operation(struct smbldap_state *ldap_state,
1682 LDAP_CONST char *reqoid, struct berval *reqdata,
1683 LDAPControl **serverctrls, LDAPControl **clientctrls,
1684 char **retoidp, struct berval **retdatap)
1685 {
1686 int rc = LDAP_SERVER_DOWN;
1687 int attempts = 0;
1688 time_t endtime = time_mono(NULL)+lp_ldap_timeout();
1689
1690 if (!ldap_state)
1691 return (-1);
1692
1693 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1694 rc = ldap_extended_operation_s(ldap_state->ldap_struct, reqoid,
1695 reqdata, serverctrls,
1696 clientctrls, retoidp, retdatap);
1697 if (rc != LDAP_SUCCESS) {
1698 char *ld_error = NULL;
1699 int ld_errno;
1700
1701 ldap_get_option(ldap_state->ldap_struct,
1702 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1703
1704 ldap_get_option(ldap_state->ldap_struct,
1705 LDAP_OPT_ERROR_STRING, &ld_error);
1706 DEBUG(10, ("Extended operation failed with error: "
1707 "%d (%s) (%s)\n", ld_errno,
1708 ldap_err2string(rc),
1709 ld_error ? ld_error : "unknown"));
1710 SAFE_FREE(ld_error);
1711
1712 if (ld_errno == LDAP_SERVER_DOWN) {
1713 ldap_unbind(ldap_state->ldap_struct);
1714 ldap_state->ldap_struct = NULL;
1715 }
1716 }
1717 }
1718
1719 return rc;
1720 }
1721
1722 /*******************************************************************
1723 run the search by name.
1724 ******************************************************************/
1725 int smbldap_search_suffix (struct smbldap_state *ldap_state,
1726 const char *filter, const char **search_attr,
1727 LDAPMessage ** result)
1728 {
1729 return smbldap_search(ldap_state, lp_ldap_suffix(), LDAP_SCOPE_SUBTREE,
1730 filter, search_attr, 0, result);
1731 }
1732
1733 static void smbldap_idle_fn(struct event_context *event_ctx,
1734 struct timed_event *te,
1735 struct timeval now_abs,
1736 void *private_data)
1737 {
1738 struct smbldap_state *state = (struct smbldap_state *)private_data;
1739
1740 TALLOC_FREE(state->idle_event);
1741
1742 if (state->ldap_struct == NULL) {
1743 DEBUG(10,("ldap connection not connected...\n"));
1744 return;
1745 }
1746
1747 if ((state->last_use+SMBLDAP_IDLE_TIME) > time_mono(NULL)) {
1748 DEBUG(10,("ldap connection not idle...\n"));
1749
1750 /* this needs to be made monotonic clock aware inside tevent: */
1751 state->idle_event = event_add_timed(
1752 event_ctx, NULL,
1753 timeval_add(&now_abs, SMBLDAP_IDLE_TIME, 0),
1754 smbldap_idle_fn,
1755 private_data);
1756 return;
1757 }
1758
1759 DEBUG(7,("ldap connection idle...closing connection\n"));
1760 smbldap_close(state);
1761 }
1762
1763 /**********************************************************************
1764 Housekeeping
1765 *********************************************************************/
1766
1767 void smbldap_free_struct(struct smbldap_state **ldap_state)
1768 {
1769 smbldap_close(*ldap_state);
1770
1771 if ((*ldap_state)->bind_secret) {
1772 memset((*ldap_state)->bind_secret, '\0', strlen((*ldap_state)->bind_secret));
1773 }
1774
1775 SAFE_FREE((*ldap_state)->bind_dn);
1776 SAFE_FREE((*ldap_state)->bind_secret);
1777
1778 TALLOC_FREE((*ldap_state)->idle_event);
1779
1780 *ldap_state = NULL;
1781
1782 /* No need to free any further, as it is talloc()ed */
1783 }
1784
1785
1786 /**********************************************************************
1787 Intitalise the 'general' ldap structures, on which ldap operations may be conducted
1788 *********************************************************************/
1789
1790 NTSTATUS smbldap_init(TALLOC_CTX *mem_ctx, struct event_context *event_ctx,
1791 const char *location,
1792 struct smbldap_state **smbldap_state)
1793 {
1794 *smbldap_state = TALLOC_ZERO_P(mem_ctx, struct smbldap_state);
1795 if (!*smbldap_state) {
1796 DEBUG(0, ("talloc() failed for ldapsam private_data!\n"));
1797 return NT_STATUS_NO_MEMORY;
1798 }
1799
1800 if (location) {
1801 (*smbldap_state)->uri = talloc_strdup(mem_ctx, location);
1802 } else {
1803 (*smbldap_state)->uri = "ldap://localhost";
1804 }
1805
1806 (*smbldap_state)->event_context = event_ctx;
1807
1808 return NT_STATUS_OK;
1809 }
1810
1811 char *smbldap_talloc_dn(TALLOC_CTX *mem_ctx, LDAP *ld,
1812 LDAPMessage *entry)
1813 {
1814 char *utf8_dn, *unix_dn;
1815 size_t converted_size;
1816
1817 utf8_dn = ldap_get_dn(ld, entry);
1818 if (!utf8_dn) {
1819 DEBUG (5, ("smbldap_talloc_dn: ldap_get_dn failed\n"));
1820 return NULL;
1821 }
1822 if (!pull_utf8_talloc(mem_ctx, &unix_dn, utf8_dn, &converted_size)) {
1823 DEBUG (0, ("smbldap_talloc_dn: String conversion failure utf8 "
1824 "[%s]\n", utf8_dn));
1825 return NULL;
1826 }
1827 ldap_memfree(utf8_dn);
1828 return unix_dn;
1829 }
1830
1831 /*******************************************************************
1832 Check if root-dse has a certain Control or Extension
1833 ********************************************************************/
1834
1835 static bool smbldap_check_root_dse(LDAP *ld, const char **attrs, const char *value)
1836 {
1837 LDAPMessage *msg = NULL;
1838 LDAPMessage *entry = NULL;
1839 char **values = NULL;
1840 int rc, num_result, num_values, i;
1841 bool result = False;
1842
1843 if (!attrs[0]) {
1844 DEBUG(3,("smbldap_check_root_dse: nothing to look for\n"));
1845 return False;
1846 }
1847
1848 if (!strequal(attrs[0], "supportedExtension") &&
1849 !strequal(attrs[0], "supportedControl") &&
1850 !strequal(attrs[0], "namingContexts")) {
1851 DEBUG(3,("smbldap_check_root_dse: no idea what to query root-dse for: %s ?\n", attrs[0]));
1852 return False;
1853 }
1854
1855 rc = ldap_search_s(ld, "", LDAP_SCOPE_BASE,
1856 "(objectclass=*)", CONST_DISCARD(char **, attrs), 0 , &msg);
1857
1858 if (rc != LDAP_SUCCESS) {
1859 DEBUG(3,("smbldap_check_root_dse: Could not search rootDSE\n"));
1860 return False;
1861 }
1862
1863 num_result = ldap_count_entries(ld, msg);
1864
1865 if (num_result != 1) {
1866 DEBUG(3,("smbldap_check_root_dse: Expected one rootDSE, got %d\n", num_result));
1867 goto done;
1868 }
1869
1870 entry = ldap_first_entry(ld, msg);
1871
1872 if (entry == NULL) {
1873 DEBUG(3,("smbldap_check_root_dse: Could not retrieve rootDSE\n"));
1874 goto done;
1875 }
1876
1877 values = ldap_get_values(ld, entry, attrs[0]);
1878
1879 if (values == NULL) {
1880 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not support any %s\n", attrs[0]));
1881 goto done;
1882 }
1883
1884 num_values = ldap_count_values(values);
1885
1886 if (num_values == 0) {
1887 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not have any %s\n", attrs[0]));
1888 goto done;
1889 }
1890
1891 for (i=0; i<num_values; i++) {
1892 if (strcmp(values[i], value) == 0)
1893 result = True;
1894 }
1895
1896
1897 done:
1898 if (values != NULL)
1899 ldap_value_free(values);
1900 if (msg != NULL)
1901 ldap_msgfree(msg);
1902
1903 return result;
1904
1905 }
1906
1907 /*******************************************************************
1908 Check if LDAP-Server supports a certain Control (OID in string format)
1909 ********************************************************************/
1910
1911 bool smbldap_has_control(LDAP *ld, const char *control)
1912 {
1913 const char *attrs[] = { "supportedControl", NULL };
1914 return smbldap_check_root_dse(ld, attrs, control);
1915 }
1916
1917 /*******************************************************************
1918 Check if LDAP-Server supports a certain Extension (OID in string format)
1919 ********************************************************************/
1920
1921 bool smbldap_has_extension(LDAP *ld, const char *extension)
1922 {
1923 const char *attrs[] = { "supportedExtension", NULL };
1924 return smbldap_check_root_dse(ld, attrs, extension);
1925 }
1926
1927 /*******************************************************************
1928 Check if LDAP-Server holds a given namingContext
1929 ********************************************************************/
1930
1931 bool smbldap_has_naming_context(LDAP *ld, const char *naming_context)
1932 {
1933 const char *attrs[] = { "namingContexts", NULL };
1934 return smbldap_check_root_dse(ld, attrs, naming_context);
1935 }
1936
1937 bool smbldap_set_creds(struct smbldap_state *ldap_state, bool anon, const char *dn, const char *secret)
1938 {
1939 ldap_state->anonymous = anon;
1940
1941 /* free any previously set credential */
1942
1943 SAFE_FREE(ldap_state->bind_dn);
1944 if (ldap_state->bind_secret) {
1945 /* make sure secrets are zeroed out of memory */
1946 memset(ldap_state->bind_secret, '\0', strlen(ldap_state->bind_secret));
1947 SAFE_FREE(ldap_state->bind_secret);
1948 }
1949
1950 if ( ! anon) {
1951 ldap_state->bind_dn = SMB_STRDUP(dn);
1952 ldap_state->bind_secret = SMB_STRDUP(secret);
1953 }
1954
1955 return True;
1956 }
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