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Fixup build without --with-aio.
[Samba/gbeck.git] / source3 / lib / smbldap.c
blobfe43237464161095b86e327429047a54a8c63160
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 size_t size = 0;
268
269 if ( !attribute )
270 return False;
271
272 value[0] = '\0';
273
274 if ((values = ldap_get_values (ldap_struct, entry, attribute)) == NULL) {
275 DEBUG (10, ("smbldap_get_single_attribute: [%s] = [<does not exist>]\n", attribute));
276
277 return False;
278 }
279
280 if (!convert_string(CH_UTF8, CH_UNIX,values[0], -1, value, max_len, &size)) {
281 DEBUG(1, ("smbldap_get_single_attribute: string conversion of [%s] = [%s] failed!\n",
282 attribute, values[0]));
283 ldap_value_free(values);
284 return False;
285 }
286
287 ldap_value_free(values);
288 #ifdef DEBUG_PASSWORDS
289 DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n", attribute, value));
290 #endif
291 return True;
292 }
293
294 char * smbldap_talloc_single_attribute(LDAP *ldap_struct, LDAPMessage *entry,
295 const char *attribute,
296 TALLOC_CTX *mem_ctx)
297 {
298 char **values;
299 char *result;
300 size_t converted_size;
301
302 if (attribute == NULL) {
303 return NULL;
304 }
305
306 values = ldap_get_values(ldap_struct, entry, attribute);
307
308 if (values == NULL) {
309 DEBUG(10, ("attribute %s does not exist\n", attribute));
310 return NULL;
311 }
312
313 if (ldap_count_values(values) != 1) {
314 DEBUG(10, ("attribute %s has %d values, expected only one\n",
315 attribute, ldap_count_values(values)));
316 ldap_value_free(values);
317 return NULL;
318 }
319
320 if (!pull_utf8_talloc(mem_ctx, &result, values[0], &converted_size)) {
321 DEBUG(10, ("pull_utf8_talloc failed\n"));
322 ldap_value_free(values);
323 return NULL;
324 }
325
326 ldap_value_free(values);
327
328 #ifdef DEBUG_PASSWORDS
329 DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n",
330 attribute, result));
331 #endif
332 return result;
333 }
334
335 char * smbldap_talloc_first_attribute(LDAP *ldap_struct, LDAPMessage *entry,
336 const char *attribute,
337 TALLOC_CTX *mem_ctx)
338 {
339 char **values;
340 char *result;
341 size_t converted_size;
342
343 if (attribute == NULL) {
344 return NULL;
345 }
346
347 values = ldap_get_values(ldap_struct, entry, attribute);
348
349 if (values == NULL) {
350 DEBUG(10, ("attribute %s does not exist\n", attribute));
351 return NULL;
352 }
353
354 if (!pull_utf8_talloc(mem_ctx, &result, values[0], &converted_size)) {
355 DEBUG(10, ("pull_utf8_talloc failed\n"));
356 ldap_value_free(values);
357 return NULL;
358 }
359
360 ldap_value_free(values);
361
362 #ifdef DEBUG_PASSWORDS
363 DEBUG (100, ("smbldap_get_first_attribute: [%s] = [%s]\n",
364 attribute, result));
365 #endif
366 return result;
367 }
368
369 char * smbldap_talloc_smallest_attribute(LDAP *ldap_struct, LDAPMessage *entry,
370 const char *attribute,
371 TALLOC_CTX *mem_ctx)
372 {
373 char **values;
374 char *result;
375 size_t converted_size;
376 int i, num_values;
377
378 if (attribute == NULL) {
379 return NULL;
380 }
381
382 values = ldap_get_values(ldap_struct, entry, attribute);
383
384 if (values == NULL) {
385 DEBUG(10, ("attribute %s does not exist\n", attribute));
386 return NULL;
387 }
388
389 if (!pull_utf8_talloc(mem_ctx, &result, values[0], &converted_size)) {
390 DEBUG(10, ("pull_utf8_talloc failed\n"));
391 ldap_value_free(values);
392 return NULL;
393 }
394
395 num_values = ldap_count_values(values);
396
397 for (i=1; i<num_values; i++) {
398 char *tmp;
399
400 if (!pull_utf8_talloc(mem_ctx, &tmp, values[i],
401 &converted_size)) {
402 DEBUG(10, ("pull_utf8_talloc failed\n"));
403 TALLOC_FREE(result);
404 ldap_value_free(values);
405 return NULL;
406 }
407
408 if (StrCaseCmp(tmp, result) < 0) {
409 TALLOC_FREE(result);
410 result = tmp;
411 } else {
412 TALLOC_FREE(tmp);
413 }
414 }
415
416 ldap_value_free(values);
417
418 #ifdef DEBUG_PASSWORDS
419 DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n",
420 attribute, result));
421 #endif
422 return result;
423 }
424
425 bool smbldap_talloc_single_blob(TALLOC_CTX *mem_ctx, LDAP *ld,
426 LDAPMessage *msg, const char *attrib,
427 DATA_BLOB *blob)
428 {
429 struct berval **values;
430
431 values = ldap_get_values_len(ld, msg, attrib);
432 if (!values) {
433 return false;
434 }
435
436 if (ldap_count_values_len(values) != 1) {
437 DEBUG(10, ("Expected one value for %s, got %d\n", attrib,
438 ldap_count_values_len(values)));
439 return false;
440 }
441
442 *blob = data_blob_talloc(mem_ctx, values[0]->bv_val,
443 values[0]->bv_len);
444 ldap_value_free_len(values);
445
446 return (blob->data != NULL);
447 }
448
449 bool smbldap_pull_sid(LDAP *ld, LDAPMessage *msg, const char *attrib,
450 struct dom_sid *sid)
451 {
452 DATA_BLOB blob;
453 bool ret;
454
455 if (!smbldap_talloc_single_blob(talloc_tos(), ld, msg, attrib,
456 &blob)) {
457 return false;
458 }
459 ret = sid_parse((char *)blob.data, blob.length, sid);
460 TALLOC_FREE(blob.data);
461 return ret;
462 }
463
464 static int ldapmsg_destructor(LDAPMessage **result) {
465 ldap_msgfree(*result);
466 return 0;
467 }
468
469 void talloc_autofree_ldapmsg(TALLOC_CTX *mem_ctx, LDAPMessage *result)
470 {
471 LDAPMessage **handle;
472
473 if (result == NULL) {
474 return;
475 }
476
477 handle = TALLOC_P(mem_ctx, LDAPMessage *);
478 SMB_ASSERT(handle != NULL);
479
480 *handle = result;
481 talloc_set_destructor(handle, ldapmsg_destructor);
482 }
483
484 static int ldapmod_destructor(LDAPMod ***mod) {
485 ldap_mods_free(*mod, True);
486 return 0;
487 }
488
489 void talloc_autofree_ldapmod(TALLOC_CTX *mem_ctx, LDAPMod **mod)
490 {
491 LDAPMod ***handle;
492
493 if (mod == NULL) {
494 return;
495 }
496
497 handle = TALLOC_P(mem_ctx, LDAPMod **);
498 SMB_ASSERT(handle != NULL);
499
500 *handle = mod;
501 talloc_set_destructor(handle, ldapmod_destructor);
502 }
503
504 /************************************************************************
505 Routine to manage the LDAPMod structure array
506 manage memory used by the array, by each struct, and values
507 ***********************************************************************/
508
509 static void smbldap_set_mod_internal(LDAPMod *** modlist, int modop, const char *attribute, const char *value, const DATA_BLOB *blob)
510 {
511 LDAPMod **mods;
512 int i;
513 int j;
514
515 mods = *modlist;
516
517 /* sanity checks on the mod values */
518
519 if (attribute == NULL || *attribute == '\0') {
520 return;
521 }
522
523 #if 0 /* commented out after discussion with abartlet. Do not reenable.
524 left here so other do not re-add similar code --jerry */
525 if (value == NULL || *value == '\0')
526 return;
527 #endif
528
529 if (mods == NULL) {
530 mods = SMB_MALLOC_P(LDAPMod *);
531 if (mods == NULL) {
532 smb_panic("smbldap_set_mod: out of memory!");
533 /* notreached. */
534 }
535 mods[0] = NULL;
536 }
537
538 for (i = 0; mods[i] != NULL; ++i) {
539 if (mods[i]->mod_op == modop && strequal(mods[i]->mod_type, attribute))
540 break;
541 }
542
543 if (mods[i] == NULL) {
544 mods = SMB_REALLOC_ARRAY (mods, LDAPMod *, i + 2);
545 if (mods == NULL) {
546 smb_panic("smbldap_set_mod: out of memory!");
547 /* notreached. */
548 }
549 mods[i] = SMB_MALLOC_P(LDAPMod);
550 if (mods[i] == NULL) {
551 smb_panic("smbldap_set_mod: out of memory!");
552 /* notreached. */
553 }
554 mods[i]->mod_op = modop;
555 mods[i]->mod_values = NULL;
556 mods[i]->mod_type = SMB_STRDUP(attribute);
557 mods[i + 1] = NULL;
558 }
559
560 if (blob && (modop & LDAP_MOD_BVALUES)) {
561 j = 0;
562 if (mods[i]->mod_bvalues != NULL) {
563 for (; mods[i]->mod_bvalues[j] != NULL; j++);
564 }
565 mods[i]->mod_bvalues = SMB_REALLOC_ARRAY(mods[i]->mod_bvalues, struct berval *, j + 2);
566
567 if (mods[i]->mod_bvalues == NULL) {
568 smb_panic("smbldap_set_mod: out of memory!");
569 /* notreached. */
570 }
571
572 mods[i]->mod_bvalues[j] = SMB_MALLOC_P(struct berval);
573 SMB_ASSERT(mods[i]->mod_bvalues[j] != NULL);
574
575 mods[i]->mod_bvalues[j]->bv_val = (char *)memdup(blob->data, blob->length);
576 SMB_ASSERT(mods[i]->mod_bvalues[j]->bv_val != NULL);
577 mods[i]->mod_bvalues[j]->bv_len = blob->length;
578
579 mods[i]->mod_bvalues[j + 1] = NULL;
580 } else if (value != NULL) {
581 char *utf8_value = NULL;
582 size_t converted_size;
583
584 j = 0;
585 if (mods[i]->mod_values != NULL) {
586 for (; mods[i]->mod_values[j] != NULL; j++);
587 }
588 mods[i]->mod_values = SMB_REALLOC_ARRAY(mods[i]->mod_values, char *, j + 2);
589
590 if (mods[i]->mod_values == NULL) {
591 smb_panic("smbldap_set_mod: out of memory!");
592 /* notreached. */
593 }
594
595 if (!push_utf8_talloc(talloc_tos(), &utf8_value, value, &converted_size)) {
596 smb_panic("smbldap_set_mod: String conversion failure!");
597 /* notreached. */
598 }
599
600 mods[i]->mod_values[j] = SMB_STRDUP(utf8_value);
601 TALLOC_FREE(utf8_value);
602 SMB_ASSERT(mods[i]->mod_values[j] != NULL);
603
604 mods[i]->mod_values[j + 1] = NULL;
605 }
606 *modlist = mods;
607 }
608
609 void smbldap_set_mod (LDAPMod *** modlist, int modop, const char *attribute, const char *value)
610 {
611 smbldap_set_mod_internal(modlist, modop, attribute, value, NULL);
612 }
613
614 void smbldap_set_mod_blob(LDAPMod *** modlist, int modop, const char *attribute, const DATA_BLOB *value)
615 {
616 smbldap_set_mod_internal(modlist, modop | LDAP_MOD_BVALUES, attribute, NULL, value);
617 }
618
619 /**********************************************************************
620 Set attribute to newval in LDAP, regardless of what value the
621 attribute had in LDAP before.
622 *********************************************************************/
623
624 static void smbldap_make_mod_internal(LDAP *ldap_struct, LDAPMessage *existing,
625 LDAPMod ***mods,
626 const char *attribute, int op,
627 const char *newval,
628 const DATA_BLOB *newblob)
629 {
630 char oldval[2048]; /* current largest allowed value is mungeddial */
631 bool existed;
632 DATA_BLOB oldblob = data_blob_null;
633
634 if (attribute == NULL) {
635 /* This can actually happen for ldapsam_compat where we for
636 * example don't have a password history */
637 return;
638 }
639
640 if (existing != NULL) {
641 if (op & LDAP_MOD_BVALUES) {
642 existed = smbldap_talloc_single_blob(talloc_tos(), ldap_struct, existing, attribute, &oldblob);
643 } else {
644 existed = smbldap_get_single_attribute(ldap_struct, existing, attribute, oldval, sizeof(oldval));
645 }
646 } else {
647 existed = False;
648 *oldval = '\0';
649 }
650
651 if (existed) {
652 bool equal = false;
653 if (op & LDAP_MOD_BVALUES) {
654 equal = (newblob && (data_blob_cmp(&oldblob, newblob) == 0));
655 } else {
656 /* all of our string attributes are case insensitive */
657 equal = (newval && (StrCaseCmp(oldval, newval) == 0));
658 }
659
660 if (equal) {
661 /* Believe it or not, but LDAP will deny a delete and
662 an add at the same time if the values are the
663 same... */
664 DEBUG(10,("smbldap_make_mod: attribute |%s| not changed.\n", attribute));
665 return;
666 }
667
668 /* There has been no value before, so don't delete it.
669 * Here's a possible race: We might end up with
670 * duplicate attributes */
671 /* By deleting exactly the value we found in the entry this
672 * should be race-free in the sense that the LDAP-Server will
673 * deny the complete operation if somebody changed the
674 * attribute behind our back. */
675 /* This will also allow modifying single valued attributes
676 * in Novell NDS. In NDS you have to first remove attribute and then
677 * you could add new value */
678
679 if (op & LDAP_MOD_BVALUES) {
680 DEBUG(10,("smbldap_make_mod: deleting attribute |%s| blob\n", attribute));
681 smbldap_set_mod_blob(mods, LDAP_MOD_DELETE, attribute, &oldblob);
682 } else {
683 DEBUG(10,("smbldap_make_mod: deleting attribute |%s| values |%s|\n", attribute, oldval));
684 smbldap_set_mod(mods, LDAP_MOD_DELETE, attribute, oldval);
685 }
686 }
687
688 /* Regardless of the real operation (add or modify)
689 we add the new value here. We rely on deleting
690 the old value, should it exist. */
691
692 if (op & LDAP_MOD_BVALUES) {
693 if (newblob && newblob->length) {
694 DEBUG(10,("smbldap_make_mod: adding attribute |%s| blob\n", attribute));
695 smbldap_set_mod_blob(mods, LDAP_MOD_ADD, attribute, newblob);
696 }
697 } else {
698 if ((newval != NULL) && (strlen(newval) > 0)) {
699 DEBUG(10,("smbldap_make_mod: adding attribute |%s| value |%s|\n", attribute, newval));
700 smbldap_set_mod(mods, LDAP_MOD_ADD, attribute, newval);
701 }
702 }
703 }
704
705 void smbldap_make_mod(LDAP *ldap_struct, LDAPMessage *existing,
706 LDAPMod ***mods,
707 const char *attribute, const char *newval)
708 {
709 smbldap_make_mod_internal(ldap_struct, existing, mods, attribute,
710 0, newval, NULL);
711 }
712
713 void smbldap_make_mod_blob(LDAP *ldap_struct, LDAPMessage *existing,
714 LDAPMod ***mods,
715 const char *attribute, const DATA_BLOB *newblob)
716 {
717 smbldap_make_mod_internal(ldap_struct, existing, mods, attribute,
718 LDAP_MOD_BVALUES, NULL, newblob);
719 }
720
721 /**********************************************************************
722 Some varients of the LDAP rebind code do not pass in the third 'arg'
723 pointer to a void*, so we try and work around it by assuming that the
724 value of the 'LDAP *' pointer is the same as the one we had passed in
725 **********************************************************************/
726
727 struct smbldap_state_lookup {
728 LDAP *ld;
729 struct smbldap_state *smbldap_state;
730 struct smbldap_state_lookup *prev, *next;
731 };
732
733 static struct smbldap_state_lookup *smbldap_state_lookup_list;
734
735 static struct smbldap_state *smbldap_find_state(LDAP *ld)
736 {
737 struct smbldap_state_lookup *t;
738
739 for (t = smbldap_state_lookup_list; t; t = t->next) {
740 if (t->ld == ld) {
741 return t->smbldap_state;
742 }
743 }
744 return NULL;
745 }
746
747 static void smbldap_delete_state(struct smbldap_state *smbldap_state)
748 {
749 struct smbldap_state_lookup *t;
750
751 for (t = smbldap_state_lookup_list; t; t = t->next) {
752 if (t->smbldap_state == smbldap_state) {
753 DLIST_REMOVE(smbldap_state_lookup_list, t);
754 SAFE_FREE(t);
755 return;
756 }
757 }
758 }
759
760 static void smbldap_store_state(LDAP *ld, struct smbldap_state *smbldap_state)
761 {
762 struct smbldap_state *tmp_ldap_state;
763 struct smbldap_state_lookup *t;
764
765 if ((tmp_ldap_state = smbldap_find_state(ld))) {
766 SMB_ASSERT(tmp_ldap_state == smbldap_state);
767 return;
768 }
769
770 t = SMB_XMALLOC_P(struct smbldap_state_lookup);
771 ZERO_STRUCTP(t);
772
773 DLIST_ADD_END(smbldap_state_lookup_list, t, struct smbldap_state_lookup *);
774 t->ld = ld;
775 t->smbldap_state = smbldap_state;
776 }
777
778 /********************************************************************
779 start TLS on an existing LDAP connection
780 *******************************************************************/
781
782 int smb_ldap_start_tls(LDAP *ldap_struct, int version)
783 {
784 #ifdef LDAP_OPT_X_TLS
785 int rc;
786 #endif
787
788 if (lp_ldap_ssl() != LDAP_SSL_START_TLS) {
789 return LDAP_SUCCESS;
790 }
791
792 #ifdef LDAP_OPT_X_TLS
793 if (version != LDAP_VERSION3) {
794 DEBUG(0, ("Need LDAPv3 for Start TLS\n"));
795 return LDAP_OPERATIONS_ERROR;
796 }
797
798 if ((rc = ldap_start_tls_s (ldap_struct, NULL, NULL)) != LDAP_SUCCESS) {
799 DEBUG(0,("Failed to issue the StartTLS instruction: %s\n",
800 ldap_err2string(rc)));
801 return rc;
802 }
803
804 DEBUG (3, ("StartTLS issued: using a TLS connection\n"));
805 return LDAP_SUCCESS;
806 #else
807 DEBUG(0,("StartTLS not supported by LDAP client libraries!\n"));
808 return LDAP_OPERATIONS_ERROR;
809 #endif
810 }
811
812 /********************************************************************
813 setup a connection to the LDAP server based on a uri
814 *******************************************************************/
815
816 static int smb_ldap_setup_conn(LDAP **ldap_struct, const char *uri)
817 {
818 int rc;
819
820 DEBUG(10, ("smb_ldap_setup_connection: %s\n", uri));
821
822 #ifdef HAVE_LDAP_INITIALIZE
823
824 rc = ldap_initialize(ldap_struct, uri);
825 if (rc) {
826 DEBUG(0, ("ldap_initialize: %s\n", ldap_err2string(rc)));
827 return rc;
828 }
829
830 if (lp_ldap_follow_referral() != Auto) {
831 rc = ldap_set_option(*ldap_struct, LDAP_OPT_REFERRALS,
832 lp_ldap_follow_referral() ? LDAP_OPT_ON : LDAP_OPT_OFF);
833 if (rc != LDAP_SUCCESS)
834 DEBUG(0, ("Failed to set LDAP_OPT_REFERRALS: %s\n",
835 ldap_err2string(rc)));
836 }
837
838 return LDAP_SUCCESS;
839 #else
840
841 /* Parse the string manually */
842
843 {
844 int port = 0;
845 fstring protocol;
846 fstring host;
847 SMB_ASSERT(sizeof(protocol)>10 && sizeof(host)>254);
848
849
850 /* skip leading "URL:" (if any) */
851 if ( strnequal( uri, "URL:", 4 ) ) {
852 uri += 4;
853 }
854
855 sscanf(uri, "%10[^:]://%254[^:/]:%d", protocol, host, &port);
856
857 if (port == 0) {
858 if (strequal(protocol, "ldap")) {
859 port = LDAP_PORT;
860 } else if (strequal(protocol, "ldaps")) {
861 port = LDAPS_PORT;
862 } else {
863 DEBUG(0, ("unrecognised protocol (%s)!\n", protocol));
864 }
865 }
866
867 if ((*ldap_struct = ldap_init(host, port)) == NULL) {
868 DEBUG(0, ("ldap_init failed !\n"));
869 return LDAP_OPERATIONS_ERROR;
870 }
871
872 if (strequal(protocol, "ldaps")) {
873 #ifdef LDAP_OPT_X_TLS
874 int tls = LDAP_OPT_X_TLS_HARD;
875 if (ldap_set_option (*ldap_struct, LDAP_OPT_X_TLS, &tls) != LDAP_SUCCESS)
876 {
877 DEBUG(0, ("Failed to setup a TLS session\n"));
878 }
879
880 DEBUG(3,("LDAPS option set...!\n"));
881 #else
882 DEBUG(0,("smbldap_open_connection: Secure connection not supported by LDAP client libraries!\n"));
883 return LDAP_OPERATIONS_ERROR;
884 #endif /* LDAP_OPT_X_TLS */
885 }
886 }
887 #endif /* HAVE_LDAP_INITIALIZE */
888
889 /* now set connection timeout */
890 #ifdef LDAP_X_OPT_CONNECT_TIMEOUT /* Netscape */
891 {
892 int ct = lp_ldap_connection_timeout()*1000;
893 rc = ldap_set_option(*ldap_struct, LDAP_X_OPT_CONNECT_TIMEOUT, &ct);
894 if (rc != LDAP_SUCCESS) {
895 DEBUG(0,("Failed to setup an ldap connection timeout %d: %s\n",
896 ct, ldap_err2string(rc)));
897 }
898 }
899 #elif defined (LDAP_OPT_NETWORK_TIMEOUT) /* OpenLDAP */
900 {
901 struct timeval ct;
902 ct.tv_usec = 0;
903 ct.tv_sec = lp_ldap_connection_timeout();
904 rc = ldap_set_option(*ldap_struct, LDAP_OPT_NETWORK_TIMEOUT, &ct);
905 if (rc != LDAP_SUCCESS) {
906 DEBUG(0,("Failed to setup an ldap connection timeout %d: %s\n",
907 (int)ct.tv_sec, ldap_err2string(rc)));
908 }
909 }
910 #endif
911
912 return LDAP_SUCCESS;
913 }
914
915 /********************************************************************
916 try to upgrade to Version 3 LDAP if not already, in either case return current
917 version
918 *******************************************************************/
919
920 static int smb_ldap_upgrade_conn(LDAP *ldap_struct, int *new_version)
921 {
922 int version;
923 int rc;
924
925 /* assume the worst */
926 *new_version = LDAP_VERSION2;
927
928 rc = ldap_get_option(ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
929 if (rc) {
930 return rc;
931 }
932
933 if (version == LDAP_VERSION3) {
934 *new_version = LDAP_VERSION3;
935 return LDAP_SUCCESS;
936 }
937
938 /* try upgrade */
939 version = LDAP_VERSION3;
940 rc = ldap_set_option (ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
941 if (rc) {
942 return rc;
943 }
944
945 *new_version = LDAP_VERSION3;
946 return LDAP_SUCCESS;
947 }
948
949 /*******************************************************************
950 open a connection to the ldap server (just until the bind)
951 ******************************************************************/
952
953 int smb_ldap_setup_full_conn(LDAP **ldap_struct, const char *uri)
954 {
955 int rc, version;
956
957 rc = smb_ldap_setup_conn(ldap_struct, uri);
958 if (rc) {
959 return rc;
960 }
961
962 rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
963 if (rc) {
964 return rc;
965 }
966
967 rc = smb_ldap_start_tls(*ldap_struct, version);
968 if (rc) {
969 return rc;
970 }
971
972 return LDAP_SUCCESS;
973 }
974
975 /*******************************************************************
976 open a connection to the ldap server.
977 ******************************************************************/
978 static int smbldap_open_connection (struct smbldap_state *ldap_state)
979
980 {
981 int rc = LDAP_SUCCESS;
982 int version;
983 int deref;
984 LDAP **ldap_struct = &ldap_state->ldap_struct;
985
986 rc = smb_ldap_setup_conn(ldap_struct, ldap_state->uri);
987 if (rc) {
988 return rc;
989 }
990
991 /* Store the LDAP pointer in a lookup list */
992
993 smbldap_store_state(*ldap_struct, ldap_state);
994
995 /* Upgrade to LDAPv3 if possible */
996
997 rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
998 if (rc) {
999 return rc;
1000 }
1001
1002 /* Start TLS if required */
1003
1004 rc = smb_ldap_start_tls(*ldap_struct, version);
1005 if (rc) {
1006 return rc;
1007 }
1008
1009 /* Set alias dereferencing method */
1010 deref = lp_ldap_deref();
1011 if (deref != -1) {
1012 if (ldap_set_option (*ldap_struct, LDAP_OPT_DEREF, &deref) != LDAP_OPT_SUCCESS) {
1013 DEBUG(1,("smbldap_open_connection: Failed to set dereferencing method: %d\n", deref));
1014 } else {
1015 DEBUG(5,("Set dereferencing method: %d\n", deref));
1016 }
1017 }
1018
1019 DEBUG(2, ("smbldap_open_connection: connection opened\n"));
1020 return rc;
1021 }
1022
1023 /*******************************************************************
1024 a rebind function for authenticated referrals
1025 This version takes a void* that we can shove useful stuff in :-)
1026 ******************************************************************/
1027 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
1028 #else
1029 static int rebindproc_with_state (LDAP * ld, char **whop, char **credp,
1030 int *methodp, int freeit, void *arg)
1031 {
1032 struct smbldap_state *ldap_state = arg;
1033 struct timespec ts;
1034
1035 /** @TODO Should we be doing something to check what servers we rebind to?
1036 Could we get a referral to a machine that we don't want to give our
1037 username and password to? */
1038
1039 if (freeit) {
1040 SAFE_FREE(*whop);
1041 if (*credp) {
1042 memset(*credp, '\0', strlen(*credp));
1043 }
1044 SAFE_FREE(*credp);
1045 } else {
1046 DEBUG(5,("rebind_proc_with_state: Rebinding as \"%s\"\n",
1047 ldap_state->bind_dn?ldap_state->bind_dn:"[Anonymous bind]"));
1048
1049 if (ldap_state->anonymous) {
1050 *whop = NULL;
1051 *credp = NULL;
1052 } else {
1053 *whop = SMB_STRDUP(ldap_state->bind_dn);
1054 if (!*whop) {
1055 return LDAP_NO_MEMORY;
1056 }
1057 *credp = SMB_STRDUP(ldap_state->bind_secret);
1058 if (!*credp) {
1059 SAFE_FREE(*whop);
1060 return LDAP_NO_MEMORY;
1061 }
1062 }
1063 *methodp = LDAP_AUTH_SIMPLE;
1064 }
1065
1066 clock_gettime_mono(&ts);
1067 ldap_state->last_rebind = convert_timespec_to_timeval(ts);
1068
1069 return 0;
1070 }
1071 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1072
1073 /*******************************************************************
1074 a rebind function for authenticated referrals
1075 This version takes a void* that we can shove useful stuff in :-)
1076 and actually does the connection.
1077 ******************************************************************/
1078 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
1079 static int rebindproc_connect_with_state (LDAP *ldap_struct,
1080 LDAP_CONST char *url,
1081 ber_tag_t request,
1082 ber_int_t msgid, void *arg)
1083 {
1084 struct smbldap_state *ldap_state =
1085 (struct smbldap_state *)arg;
1086 int rc;
1087 struct timespec ts;
1088 int version;
1089
1090 DEBUG(5,("rebindproc_connect_with_state: Rebinding to %s as \"%s\"\n",
1091 url, ldap_state->bind_dn?ldap_state->bind_dn:"[Anonymous bind]"));
1092
1093 /* call START_TLS again (ldaps:// is handled by the OpenLDAP library
1094 * itself) before rebinding to another LDAP server to avoid to expose
1095 * our credentials. At least *try* to secure the connection - Guenther */
1096
1097 smb_ldap_upgrade_conn(ldap_struct, &version);
1098 smb_ldap_start_tls(ldap_struct, version);
1099
1100 /** @TODO Should we be doing something to check what servers we rebind to?
1101 Could we get a referral to a machine that we don't want to give our
1102 username and password to? */
1103
1104 rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
1105
1106 /* only set the last rebind timestamp when we did rebind after a
1107 * non-read LDAP operation. That way we avoid the replication sleep
1108 * after a simple redirected search operation - Guenther */
1109
1110 switch (request) {
1111
1112 case LDAP_REQ_MODIFY:
1113 case LDAP_REQ_ADD:
1114 case LDAP_REQ_DELETE:
1115 case LDAP_REQ_MODDN:
1116 case LDAP_REQ_EXTENDED:
1117 DEBUG(10,("rebindproc_connect_with_state: "
1118 "setting last_rebind timestamp "
1119 "(req: 0x%02x)\n", (unsigned int)request));
1120 clock_gettime_mono(&ts);
1121 ldap_state->last_rebind = convert_timespec_to_timeval(ts);
1122 break;
1123 default:
1124 ZERO_STRUCT(ldap_state->last_rebind);
1125 break;
1126 }
1127
1128 return rc;
1129 }
1130 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1131
1132 /*******************************************************************
1133 Add a rebind function for authenticated referrals
1134 ******************************************************************/
1135 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
1136 #else
1137 # if LDAP_SET_REBIND_PROC_ARGS == 2
1138 static int rebindproc (LDAP *ldap_struct, char **whop, char **credp,
1139 int *method, int freeit )
1140 {
1141 struct smbldap_state *ldap_state = smbldap_find_state(ldap_struct);
1142
1143 return rebindproc_with_state(ldap_struct, whop, credp,
1144 method, freeit, ldap_state);
1145 }
1146 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
1147 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1148
1149 /*******************************************************************
1150 a rebind function for authenticated referrals
1151 this also does the connection, but no void*.
1152 ******************************************************************/
1153 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
1154 # if LDAP_SET_REBIND_PROC_ARGS == 2
1155 static int rebindproc_connect (LDAP * ld, LDAP_CONST char *url, int request,
1156 ber_int_t msgid)
1157 {
1158 struct smbldap_state *ldap_state = smbldap_find_state(ld);
1159
1160 return rebindproc_connect_with_state(ld, url, (ber_tag_t)request, msgid,
1161 ldap_state);
1162 }
1163 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
1164 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1165
1166 /*******************************************************************
1167 connect to the ldap server under system privilege.
1168 ******************************************************************/
1169 static int smbldap_connect_system(struct smbldap_state *ldap_state, LDAP * ldap_struct)
1170 {
1171 int rc;
1172 int version;
1173
1174 if (!ldap_state->anonymous && !ldap_state->bind_dn) {
1175 char *bind_dn = NULL;
1176 char *bind_secret = NULL;
1177
1178 /* get the default dn and password only if they are not set already */
1179 if (!fetch_ldap_pw(&bind_dn, &bind_secret)) {
1180 DEBUG(0, ("ldap_connect_system: Failed to retrieve password from secrets.tdb\n"));
1181 return LDAP_INVALID_CREDENTIALS;
1182 }
1183 smbldap_set_creds(ldap_state, false, bind_dn, bind_secret);
1184 SAFE_FREE(bind_dn);
1185 memset(bind_secret, '\0', strlen(bind_secret));
1186 SAFE_FREE(bind_secret);
1187 }
1188
1189 /* removed the sasl_bind_s "EXTERNAL" stuff, as my testsuite
1190 (OpenLDAP) doesnt' seem to support it */
1191
1192 DEBUG(10,("ldap_connect_system: Binding to ldap server %s as \"%s\"\n",
1193 ldap_state->uri, ldap_state->bind_dn));
1194
1195 #ifdef HAVE_LDAP_SET_REBIND_PROC
1196 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
1197 # if LDAP_SET_REBIND_PROC_ARGS == 2
1198 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect);
1199 # endif
1200 # if LDAP_SET_REBIND_PROC_ARGS == 3
1201 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect_with_state, (void *)ldap_state);
1202 # endif
1203 #else /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1204 # if LDAP_SET_REBIND_PROC_ARGS == 2
1205 ldap_set_rebind_proc(ldap_struct, &rebindproc);
1206 # endif
1207 # if LDAP_SET_REBIND_PROC_ARGS == 3
1208 ldap_set_rebind_proc(ldap_struct, &rebindproc_with_state, (void *)ldap_state);
1209 # endif
1210 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1211 #endif
1212
1213 rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
1214
1215 if (rc != LDAP_SUCCESS) {
1216 char *ld_error = NULL;
1217 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
1218 &ld_error);
1219 DEBUG(ldap_state->num_failures ? 2 : 0,
1220 ("failed to bind to server %s with dn=\"%s\" Error: %s\n\t%s\n",
1221 ldap_state->uri,
1222 ldap_state->bind_dn ? ldap_state->bind_dn : "[Anonymous bind]",
1223 ldap_err2string(rc),
1224 ld_error ? ld_error : "(unknown)"));
1225 SAFE_FREE(ld_error);
1226 ldap_state->num_failures++;
1227 return rc;
1228 }
1229
1230 ldap_state->num_failures = 0;
1231 ldap_state->paged_results = False;
1232
1233 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
1234
1235 if (smbldap_has_control(ldap_state->ldap_struct, ADS_PAGE_CTL_OID) && version == 3) {
1236 ldap_state->paged_results = True;
1237 }
1238
1239 DEBUG(3, ("ldap_connect_system: successful connection to the LDAP server\n"));
1240 DEBUGADD(10, ("ldap_connect_system: LDAP server %s support paged results\n",
1241 ldap_state->paged_results ? "does" : "does not"));
1242 return rc;
1243 }
1244
1245 static void smbldap_idle_fn(struct event_context *event_ctx,
1246 struct timed_event *te,
1247 struct timeval now_abs,
1248 void *private_data);
1249
1250 /**********************************************************************
1251 Connect to LDAP server (called before every ldap operation)
1252 *********************************************************************/
1253 static int smbldap_open(struct smbldap_state *ldap_state)
1254 {
1255 int rc, opt_rc;
1256 bool reopen = False;
1257 SMB_ASSERT(ldap_state);
1258
1259 if ((ldap_state->ldap_struct != NULL) && ((ldap_state->last_ping + SMBLDAP_DONT_PING_TIME) < time_mono(NULL))) {
1260
1261 #ifdef HAVE_UNIXSOCKET
1262 struct sockaddr_un addr;
1263 #else
1264 struct sockaddr addr;
1265 #endif
1266 socklen_t len = sizeof(addr);
1267 int sd;
1268
1269 opt_rc = ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_DESC, &sd);
1270 if (opt_rc == 0 && (getpeername(sd, (struct sockaddr *) &addr, &len)) < 0 )
1271 reopen = True;
1272
1273 #ifdef HAVE_UNIXSOCKET
1274 if (opt_rc == 0 && addr.sun_family == AF_UNIX)
1275 reopen = True;
1276 #endif
1277 if (reopen) {
1278 /* the other end has died. reopen. */
1279 ldap_unbind(ldap_state->ldap_struct);
1280 ldap_state->ldap_struct = NULL;
1281 ldap_state->last_ping = (time_t)0;
1282 } else {
1283 ldap_state->last_ping = time_mono(NULL);
1284 }
1285 }
1286
1287 if (ldap_state->ldap_struct != NULL) {
1288 DEBUG(11,("smbldap_open: already connected to the LDAP server\n"));
1289 return LDAP_SUCCESS;
1290 }
1291
1292 if ((rc = smbldap_open_connection(ldap_state))) {
1293 return rc;
1294 }
1295
1296 if ((rc = smbldap_connect_system(ldap_state, ldap_state->ldap_struct))) {
1297 ldap_unbind(ldap_state->ldap_struct);
1298 ldap_state->ldap_struct = NULL;
1299 return rc;
1300 }
1301
1302
1303 ldap_state->last_ping = time_mono(NULL);
1304 ldap_state->pid = sys_getpid();
1305
1306 TALLOC_FREE(ldap_state->idle_event);
1307
1308 if (ldap_state->event_context != NULL) {
1309 ldap_state->idle_event = event_add_timed(
1310 ldap_state->event_context, NULL,
1311 timeval_current_ofs(SMBLDAP_IDLE_TIME, 0),
1312 smbldap_idle_fn, ldap_state);
1313 }
1314
1315 DEBUG(4,("The LDAP server is successfully connected\n"));
1316
1317 return LDAP_SUCCESS;
1318 }
1319
1320 /**********************************************************************
1321 Disconnect from LDAP server
1322 *********************************************************************/
1323 static NTSTATUS smbldap_close(struct smbldap_state *ldap_state)
1324 {
1325 if (!ldap_state)
1326 return NT_STATUS_INVALID_PARAMETER;
1327
1328 if (ldap_state->ldap_struct != NULL) {
1329 ldap_unbind(ldap_state->ldap_struct);
1330 ldap_state->ldap_struct = NULL;
1331 }
1332
1333 smbldap_delete_state(ldap_state);
1334
1335 DEBUG(5,("The connection to the LDAP server was closed\n"));
1336 /* maybe free the results here --metze */
1337
1338 return NT_STATUS_OK;
1339 }
1340
1341 static bool got_alarm;
1342
1343 static void (*old_handler)(int);
1344
1345 static void gotalarm_sig(int dummy)
1346 {
1347 got_alarm = True;
1348 }
1349
1350 static int another_ldap_try(struct smbldap_state *ldap_state, int *rc,
1351 int *attempts, time_t endtime)
1352 {
1353 time_t now = time_mono(NULL);
1354 int open_rc = LDAP_SERVER_DOWN;
1355
1356 if (*rc != LDAP_SERVER_DOWN)
1357 goto no_next;
1358
1359 if (now >= endtime) {
1360 smbldap_close(ldap_state);
1361 *rc = LDAP_TIMEOUT;
1362 goto no_next;
1363 }
1364
1365 if (*attempts == 0) {
1366 got_alarm = False;
1367 old_handler = CatchSignal(SIGALRM, gotalarm_sig);
1368 alarm(endtime - now);
1369
1370 if (ldap_state->pid != sys_getpid())
1371 smbldap_close(ldap_state);
1372 }
1373
1374 while (1) {
1375
1376 if (*attempts != 0)
1377 smb_msleep(1000);
1378
1379 *attempts += 1;
1380
1381 open_rc = smbldap_open(ldap_state);
1382
1383 if (open_rc == LDAP_SUCCESS) {
1384 ldap_state->last_use = now;
1385 return True;
1386 }
1387
1388 if (open_rc == LDAP_INSUFFICIENT_ACCESS) {
1389 /* The fact that we are non-root or any other
1390 * access-denied condition will not change in the next
1391 * round of trying */
1392 *rc = open_rc;
1393 break;
1394 }
1395
1396 if (got_alarm) {
1397 *rc = LDAP_TIMEOUT;
1398 break;
1399 }
1400
1401 if (open_rc != LDAP_SUCCESS) {
1402 DEBUG(1, ("Connection to LDAP server failed for the "
1403 "%d try!\n", *attempts));
1404 }
1405 }
1406
1407 no_next:
1408 CatchSignal(SIGALRM, old_handler);
1409 alarm(0);
1410 ldap_state->last_use = now;
1411 return False;
1412 }
1413
1414 /*********************************************************************
1415 ********************************************************************/
1416
1417 static int smbldap_search_ext(struct smbldap_state *ldap_state,
1418 const char *base, int scope, const char *filter,
1419 const char *attrs[], int attrsonly,
1420 LDAPControl **sctrls, LDAPControl **cctrls,
1421 int sizelimit, LDAPMessage **res)
1422 {
1423 int rc = LDAP_SERVER_DOWN;
1424 int attempts = 0;
1425 char *utf8_filter;
1426 time_t endtime = time_mono(NULL)+lp_ldap_timeout();
1427 struct timeval timeout;
1428 size_t converted_size;
1429
1430 SMB_ASSERT(ldap_state);
1431
1432 DEBUG(5,("smbldap_search_ext: base => [%s], filter => [%s], "
1433 "scope => [%d]\n", base, filter, scope));
1434
1435 if (ldap_state->last_rebind.tv_sec > 0) {
1436 struct timeval tval;
1437 struct timespec ts;
1438 int64_t tdiff = 0;
1439 int sleep_time = 0;
1440
1441 clock_gettime_mono(&ts);
1442 tval = convert_timespec_to_timeval(ts);
1443
1444 tdiff = usec_time_diff(&tval, &ldap_state->last_rebind);
1445 tdiff /= 1000; /* Convert to milliseconds. */
1446
1447 sleep_time = lp_ldap_replication_sleep()-(int)tdiff;
1448 sleep_time = MIN(sleep_time, MAX_LDAP_REPLICATION_SLEEP_TIME);
1449
1450 if (sleep_time > 0) {
1451 /* we wait for the LDAP replication */
1452 DEBUG(5,("smbldap_search_ext: waiting %d milliseconds "
1453 "for LDAP replication.\n",sleep_time));
1454 smb_msleep(sleep_time);
1455 DEBUG(5,("smbldap_search_ext: go on!\n"));
1456 }
1457 ZERO_STRUCT(ldap_state->last_rebind);
1458 }
1459
1460 if (!push_utf8_talloc(talloc_tos(), &utf8_filter, filter, &converted_size)) {
1461 return LDAP_NO_MEMORY;
1462 }
1463
1464 /* Setup timeout for the ldap_search_ext_s call - local and remote. */
1465 timeout.tv_sec = lp_ldap_timeout();
1466 timeout.tv_usec = 0;
1467
1468 /* Setup alarm timeout.... Do we need both of these ? JRA.
1469 * Yes, I think we do need both of these. The server timeout only
1470 * covers the case where the server's operation takes too long. It
1471 * does not cover the case where the request hangs on its way to the
1472 * server. The server side timeout is not strictly necessary, it's
1473 * just a bit more kind to the server. VL. */
1474
1475 got_alarm = 0;
1476 CatchSignal(SIGALRM, gotalarm_sig);
1477 alarm(lp_ldap_timeout());
1478 /* End setup timeout. */
1479
1480 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1481 rc = ldap_search_ext_s(ldap_state->ldap_struct, base, scope,
1482 utf8_filter,
1483 CONST_DISCARD(char **, attrs),
1484 attrsonly, sctrls, cctrls, &timeout,
1485 sizelimit, res);
1486 if (rc != LDAP_SUCCESS) {
1487 char *ld_error = NULL;
1488 int ld_errno;
1489
1490 ldap_get_option(ldap_state->ldap_struct,
1491 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1492
1493 ldap_get_option(ldap_state->ldap_struct,
1494 LDAP_OPT_ERROR_STRING, &ld_error);
1495 DEBUG(10, ("Failed search for base: %s, error: %d (%s) "
1496 "(%s)\n", base, ld_errno,
1497 ldap_err2string(rc),
1498 ld_error ? ld_error : "unknown"));
1499 SAFE_FREE(ld_error);
1500
1501 if (ld_errno == LDAP_SERVER_DOWN) {
1502 ldap_unbind(ldap_state->ldap_struct);
1503 ldap_state->ldap_struct = NULL;
1504 }
1505 }
1506 }
1507
1508 TALLOC_FREE(utf8_filter);
1509
1510 /* Teardown timeout. */
1511 CatchSignal(SIGALRM, SIG_IGN);
1512 alarm(0);
1513
1514 if (got_alarm != 0)
1515 return LDAP_TIMELIMIT_EXCEEDED;
1516
1517 return rc;
1518 }
1519
1520 int smbldap_search(struct smbldap_state *ldap_state,
1521 const char *base, int scope, const char *filter,
1522 const char *attrs[], int attrsonly,
1523 LDAPMessage **res)
1524 {
1525 return smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1526 attrsonly, NULL, NULL, LDAP_NO_LIMIT, res);
1527 }
1528
1529 int smbldap_search_paged(struct smbldap_state *ldap_state,
1530 const char *base, int scope, const char *filter,
1531 const char **attrs, int attrsonly, int pagesize,
1532 LDAPMessage **res, void **cookie)
1533 {
1534 LDAPControl pr;
1535 LDAPControl **rcontrols;
1536 LDAPControl *controls[2] = { NULL, NULL};
1537 BerElement *cookie_be = NULL;
1538 struct berval *cookie_bv = NULL;
1539 int tmp = 0, i, rc;
1540 bool critical = True;
1541
1542 *res = NULL;
1543
1544 DEBUG(3,("smbldap_search_paged: base => [%s], filter => [%s],"
1545 "scope => [%d], pagesize => [%d]\n",
1546 base, filter, scope, pagesize));
1547
1548 cookie_be = ber_alloc_t(LBER_USE_DER);
1549 if (cookie_be == NULL) {
1550 DEBUG(0,("smbldap_create_page_control: ber_alloc_t returns "
1551 "NULL\n"));
1552 return LDAP_NO_MEMORY;
1553 }
1554
1555 /* construct cookie */
1556 if (*cookie != NULL) {
1557 ber_printf(cookie_be, "{iO}", (ber_int_t) pagesize, *cookie);
1558 ber_bvfree((struct berval *)*cookie); /* don't need it from last time */
1559 *cookie = NULL;
1560 } else {
1561 ber_printf(cookie_be, "{io}", (ber_int_t) pagesize, "", 0);
1562 }
1563 ber_flatten(cookie_be, &cookie_bv);
1564
1565 pr.ldctl_oid = CONST_DISCARD(char *, ADS_PAGE_CTL_OID);
1566 pr.ldctl_iscritical = (char) critical;
1567 pr.ldctl_value.bv_len = cookie_bv->bv_len;
1568 pr.ldctl_value.bv_val = cookie_bv->bv_val;
1569
1570 controls[0] = &pr;
1571 controls[1] = NULL;
1572
1573 rc = smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1574 0, controls, NULL, LDAP_NO_LIMIT, res);
1575
1576 ber_free(cookie_be, 1);
1577 ber_bvfree(cookie_bv);
1578
1579 if (rc != 0) {
1580 DEBUG(3,("smbldap_search_paged: smbldap_search_ext(%s) "
1581 "failed with [%s]\n", filter, ldap_err2string(rc)));
1582 goto done;
1583 }
1584
1585 DEBUG(3,("smbldap_search_paged: search was successful\n"));
1586
1587 rc = ldap_parse_result(ldap_state->ldap_struct, *res, NULL, NULL,
1588 NULL, NULL, &rcontrols, 0);
1589 if (rc != 0) {
1590 DEBUG(3,("smbldap_search_paged: ldap_parse_result failed " \
1591 "with [%s]\n", ldap_err2string(rc)));
1592 goto done;
1593 }
1594
1595 if (rcontrols == NULL)
1596 goto done;
1597
1598 for (i=0; rcontrols[i]; i++) {
1599
1600 if (strcmp(ADS_PAGE_CTL_OID, rcontrols[i]->ldctl_oid) != 0)
1601 continue;
1602
1603 cookie_be = ber_init(&rcontrols[i]->ldctl_value);
1604 ber_scanf(cookie_be,"{iO}", &tmp, &cookie_bv);
1605 /* the berval is the cookie, but must be freed when it is all
1606 done */
1607 if (cookie_bv->bv_len)
1608 *cookie=ber_bvdup(cookie_bv);
1609 else
1610 *cookie=NULL;
1611 ber_bvfree(cookie_bv);
1612 ber_free(cookie_be, 1);
1613 break;
1614 }
1615 ldap_controls_free(rcontrols);
1616 done:
1617 return rc;
1618 }
1619
1620 int smbldap_modify(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1621 {
1622 int rc = LDAP_SERVER_DOWN;
1623 int attempts = 0;
1624 char *utf8_dn;
1625 time_t endtime = time_mono(NULL)+lp_ldap_timeout();
1626 size_t converted_size;
1627
1628 SMB_ASSERT(ldap_state);
1629
1630 DEBUG(5,("smbldap_modify: dn => [%s]\n", dn ));
1631
1632 if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
1633 return LDAP_NO_MEMORY;
1634 }
1635
1636 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1637 rc = ldap_modify_s(ldap_state->ldap_struct, utf8_dn, attrs);
1638 if (rc != LDAP_SUCCESS) {
1639 char *ld_error = NULL;
1640 int ld_errno;
1641
1642 ldap_get_option(ldap_state->ldap_struct,
1643 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1644
1645 ldap_get_option(ldap_state->ldap_struct,
1646 LDAP_OPT_ERROR_STRING, &ld_error);
1647 DEBUG(10, ("Failed to modify dn: %s, error: %d (%s) "
1648 "(%s)\n", dn, ld_errno,
1649 ldap_err2string(rc),
1650 ld_error ? ld_error : "unknown"));
1651 SAFE_FREE(ld_error);
1652
1653 if (ld_errno == LDAP_SERVER_DOWN) {
1654 ldap_unbind(ldap_state->ldap_struct);
1655 ldap_state->ldap_struct = NULL;
1656 }
1657 }
1658 }
1659
1660 TALLOC_FREE(utf8_dn);
1661 return rc;
1662 }
1663
1664 int smbldap_add(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1665 {
1666 int rc = LDAP_SERVER_DOWN;
1667 int attempts = 0;
1668 char *utf8_dn;
1669 time_t endtime = time_mono(NULL)+lp_ldap_timeout();
1670 size_t converted_size;
1671
1672 SMB_ASSERT(ldap_state);
1673
1674 DEBUG(5,("smbldap_add: dn => [%s]\n", dn ));
1675
1676 if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
1677 return LDAP_NO_MEMORY;
1678 }
1679
1680 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1681 rc = ldap_add_s(ldap_state->ldap_struct, utf8_dn, attrs);
1682 if (rc != LDAP_SUCCESS) {
1683 char *ld_error = NULL;
1684 int ld_errno;
1685
1686 ldap_get_option(ldap_state->ldap_struct,
1687 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1688
1689 ldap_get_option(ldap_state->ldap_struct,
1690 LDAP_OPT_ERROR_STRING, &ld_error);
1691 DEBUG(10, ("Failed to add dn: %s, error: %d (%s) "
1692 "(%s)\n", dn, ld_errno,
1693 ldap_err2string(rc),
1694 ld_error ? ld_error : "unknown"));
1695 SAFE_FREE(ld_error);
1696
1697 if (ld_errno == LDAP_SERVER_DOWN) {
1698 ldap_unbind(ldap_state->ldap_struct);
1699 ldap_state->ldap_struct = NULL;
1700 }
1701 }
1702 }
1703
1704 TALLOC_FREE(utf8_dn);
1705 return rc;
1706 }
1707
1708 int smbldap_delete(struct smbldap_state *ldap_state, const char *dn)
1709 {
1710 int rc = LDAP_SERVER_DOWN;
1711 int attempts = 0;
1712 char *utf8_dn;
1713 time_t endtime = time_mono(NULL)+lp_ldap_timeout();
1714 size_t converted_size;
1715
1716 SMB_ASSERT(ldap_state);
1717
1718 DEBUG(5,("smbldap_delete: dn => [%s]\n", dn ));
1719
1720 if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
1721 return LDAP_NO_MEMORY;
1722 }
1723
1724 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1725 rc = ldap_delete_s(ldap_state->ldap_struct, utf8_dn);
1726 if (rc != LDAP_SUCCESS) {
1727 char *ld_error = NULL;
1728 int ld_errno;
1729
1730 ldap_get_option(ldap_state->ldap_struct,
1731 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1732
1733 ldap_get_option(ldap_state->ldap_struct,
1734 LDAP_OPT_ERROR_STRING, &ld_error);
1735 DEBUG(10, ("Failed to delete dn: %s, error: %d (%s) "
1736 "(%s)\n", dn, ld_errno,
1737 ldap_err2string(rc),
1738 ld_error ? ld_error : "unknown"));
1739 SAFE_FREE(ld_error);
1740
1741 if (ld_errno == LDAP_SERVER_DOWN) {
1742 ldap_unbind(ldap_state->ldap_struct);
1743 ldap_state->ldap_struct = NULL;
1744 }
1745 }
1746 }
1747
1748 TALLOC_FREE(utf8_dn);
1749 return rc;
1750 }
1751
1752 int smbldap_extended_operation(struct smbldap_state *ldap_state,
1753 LDAP_CONST char *reqoid, struct berval *reqdata,
1754 LDAPControl **serverctrls, LDAPControl **clientctrls,
1755 char **retoidp, struct berval **retdatap)
1756 {
1757 int rc = LDAP_SERVER_DOWN;
1758 int attempts = 0;
1759 time_t endtime = time_mono(NULL)+lp_ldap_timeout();
1760
1761 if (!ldap_state)
1762 return (-1);
1763
1764 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1765 rc = ldap_extended_operation_s(ldap_state->ldap_struct, reqoid,
1766 reqdata, serverctrls,
1767 clientctrls, retoidp, retdatap);
1768 if (rc != LDAP_SUCCESS) {
1769 char *ld_error = NULL;
1770 int ld_errno;
1771
1772 ldap_get_option(ldap_state->ldap_struct,
1773 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1774
1775 ldap_get_option(ldap_state->ldap_struct,
1776 LDAP_OPT_ERROR_STRING, &ld_error);
1777 DEBUG(10, ("Extended operation failed with error: "
1778 "%d (%s) (%s)\n", ld_errno,
1779 ldap_err2string(rc),
1780 ld_error ? ld_error : "unknown"));
1781 SAFE_FREE(ld_error);
1782
1783 if (ld_errno == LDAP_SERVER_DOWN) {
1784 ldap_unbind(ldap_state->ldap_struct);
1785 ldap_state->ldap_struct = NULL;
1786 }
1787 }
1788 }
1789
1790 return rc;
1791 }
1792
1793 /*******************************************************************
1794 run the search by name.
1795 ******************************************************************/
1796 int smbldap_search_suffix (struct smbldap_state *ldap_state,
1797 const char *filter, const char **search_attr,
1798 LDAPMessage ** result)
1799 {
1800 return smbldap_search(ldap_state, lp_ldap_suffix(), LDAP_SCOPE_SUBTREE,
1801 filter, search_attr, 0, result);
1802 }
1803
1804 static void smbldap_idle_fn(struct event_context *event_ctx,
1805 struct timed_event *te,
1806 struct timeval now_abs,
1807 void *private_data)
1808 {
1809 struct smbldap_state *state = (struct smbldap_state *)private_data;
1810
1811 TALLOC_FREE(state->idle_event);
1812
1813 if (state->ldap_struct == NULL) {
1814 DEBUG(10,("ldap connection not connected...\n"));
1815 return;
1816 }
1817
1818 if ((state->last_use+SMBLDAP_IDLE_TIME) > time_mono(NULL)) {
1819 DEBUG(10,("ldap connection not idle...\n"));
1820
1821 /* this needs to be made monotonic clock aware inside tevent: */
1822 state->idle_event = event_add_timed(
1823 event_ctx, NULL,
1824 timeval_add(&now_abs, SMBLDAP_IDLE_TIME, 0),
1825 smbldap_idle_fn,
1826 private_data);
1827 return;
1828 }
1829
1830 DEBUG(7,("ldap connection idle...closing connection\n"));
1831 smbldap_close(state);
1832 }
1833
1834 /**********************************************************************
1835 Housekeeping
1836 *********************************************************************/
1837
1838 void smbldap_free_struct(struct smbldap_state **ldap_state)
1839 {
1840 smbldap_close(*ldap_state);
1841
1842 if ((*ldap_state)->bind_secret) {
1843 memset((*ldap_state)->bind_secret, '\0', strlen((*ldap_state)->bind_secret));
1844 }
1845
1846 SAFE_FREE((*ldap_state)->bind_dn);
1847 SAFE_FREE((*ldap_state)->bind_secret);
1848
1849 TALLOC_FREE((*ldap_state)->idle_event);
1850
1851 *ldap_state = NULL;
1852
1853 /* No need to free any further, as it is talloc()ed */
1854 }
1855
1856
1857 /**********************************************************************
1858 Intitalise the 'general' ldap structures, on which ldap operations may be conducted
1859 *********************************************************************/
1860
1861 NTSTATUS smbldap_init(TALLOC_CTX *mem_ctx, struct event_context *event_ctx,
1862 const char *location,
1863 struct smbldap_state **smbldap_state)
1864 {
1865 *smbldap_state = TALLOC_ZERO_P(mem_ctx, struct smbldap_state);
1866 if (!*smbldap_state) {
1867 DEBUG(0, ("talloc() failed for ldapsam private_data!\n"));
1868 return NT_STATUS_NO_MEMORY;
1869 }
1870
1871 if (location) {
1872 (*smbldap_state)->uri = talloc_strdup(mem_ctx, location);
1873 } else {
1874 (*smbldap_state)->uri = "ldap://localhost";
1875 }
1876
1877 (*smbldap_state)->event_context = event_ctx;
1878
1879 return NT_STATUS_OK;
1880 }
1881
1882 char *smbldap_talloc_dn(TALLOC_CTX *mem_ctx, LDAP *ld,
1883 LDAPMessage *entry)
1884 {
1885 char *utf8_dn, *unix_dn;
1886 size_t converted_size;
1887
1888 utf8_dn = ldap_get_dn(ld, entry);
1889 if (!utf8_dn) {
1890 DEBUG (5, ("smbldap_talloc_dn: ldap_get_dn failed\n"));
1891 return NULL;
1892 }
1893 if (!pull_utf8_talloc(mem_ctx, &unix_dn, utf8_dn, &converted_size)) {
1894 DEBUG (0, ("smbldap_talloc_dn: String conversion failure utf8 "
1895 "[%s]\n", utf8_dn));
1896 return NULL;
1897 }
1898 ldap_memfree(utf8_dn);
1899 return unix_dn;
1900 }
1901
1902 /*******************************************************************
1903 Check if root-dse has a certain Control or Extension
1904 ********************************************************************/
1905
1906 static bool smbldap_check_root_dse(LDAP *ld, const char **attrs, const char *value)
1907 {
1908 LDAPMessage *msg = NULL;
1909 LDAPMessage *entry = NULL;
1910 char **values = NULL;
1911 int rc, num_result, num_values, i;
1912 bool result = False;
1913
1914 if (!attrs[0]) {
1915 DEBUG(3,("smbldap_check_root_dse: nothing to look for\n"));
1916 return False;
1917 }
1918
1919 if (!strequal(attrs[0], "supportedExtension") &&
1920 !strequal(attrs[0], "supportedControl") &&
1921 !strequal(attrs[0], "namingContexts")) {
1922 DEBUG(3,("smbldap_check_root_dse: no idea what to query root-dse for: %s ?\n", attrs[0]));
1923 return False;
1924 }
1925
1926 rc = ldap_search_s(ld, "", LDAP_SCOPE_BASE,
1927 "(objectclass=*)", CONST_DISCARD(char **, attrs), 0 , &msg);
1928
1929 if (rc != LDAP_SUCCESS) {
1930 DEBUG(3,("smbldap_check_root_dse: Could not search rootDSE\n"));
1931 return False;
1932 }
1933
1934 num_result = ldap_count_entries(ld, msg);
1935
1936 if (num_result != 1) {
1937 DEBUG(3,("smbldap_check_root_dse: Expected one rootDSE, got %d\n", num_result));
1938 goto done;
1939 }
1940
1941 entry = ldap_first_entry(ld, msg);
1942
1943 if (entry == NULL) {
1944 DEBUG(3,("smbldap_check_root_dse: Could not retrieve rootDSE\n"));
1945 goto done;
1946 }
1947
1948 values = ldap_get_values(ld, entry, attrs[0]);
1949
1950 if (values == NULL) {
1951 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not support any %s\n", attrs[0]));
1952 goto done;
1953 }
1954
1955 num_values = ldap_count_values(values);
1956
1957 if (num_values == 0) {
1958 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not have any %s\n", attrs[0]));
1959 goto done;
1960 }
1961
1962 for (i=0; i<num_values; i++) {
1963 if (strcmp(values[i], value) == 0)
1964 result = True;
1965 }
1966
1967
1968 done:
1969 if (values != NULL)
1970 ldap_value_free(values);
1971 if (msg != NULL)
1972 ldap_msgfree(msg);
1973
1974 return result;
1975
1976 }
1977
1978 /*******************************************************************
1979 Check if LDAP-Server supports a certain Control (OID in string format)
1980 ********************************************************************/
1981
1982 bool smbldap_has_control(LDAP *ld, const char *control)
1983 {
1984 const char *attrs[] = { "supportedControl", NULL };
1985 return smbldap_check_root_dse(ld, attrs, control);
1986 }
1987
1988 /*******************************************************************
1989 Check if LDAP-Server supports a certain Extension (OID in string format)
1990 ********************************************************************/
1991
1992 bool smbldap_has_extension(LDAP *ld, const char *extension)
1993 {
1994 const char *attrs[] = { "supportedExtension", NULL };
1995 return smbldap_check_root_dse(ld, attrs, extension);
1996 }
1997
1998 /*******************************************************************
1999 Check if LDAP-Server holds a given namingContext
2000 ********************************************************************/
2001
2002 bool smbldap_has_naming_context(LDAP *ld, const char *naming_context)
2003 {
2004 const char *attrs[] = { "namingContexts", NULL };
2005 return smbldap_check_root_dse(ld, attrs, naming_context);
2006 }
2007
2008 bool smbldap_set_creds(struct smbldap_state *ldap_state, bool anon, const char *dn, const char *secret)
2009 {
2010 ldap_state->anonymous = anon;
2011
2012 /* free any previously set credential */
2013
2014 SAFE_FREE(ldap_state->bind_dn);
2015 if (ldap_state->bind_secret) {
2016 /* make sure secrets are zeroed out of memory */
2017 memset(ldap_state->bind_secret, '\0', strlen(ldap_state->bind_secret));
2018 SAFE_FREE(ldap_state->bind_secret);
2019 }
2020
2021 if ( ! anon) {
2022 ldap_state->bind_dn = SMB_STRDUP(dn);
2023 ldap_state->bind_secret = SMB_STRDUP(secret);
2024 }
2025
2026 return True;
2027 }
WIP