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s4:smb_server: s/SMB_SIGNING_SUPPORTED/SMB_SIGNING_IF_REQUIRED/
[Samba/vl.git] / source3 / lib / smbldap.c
blobbb98d44419f20efbdf5e3e7b1e8501d0d2f5a0c3
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 #include <tevent.h>
30
31 /* Try not to hit the up or down server forever */
32
33 #define SMBLDAP_DONT_PING_TIME 10 /* ping only all 10 seconds */
34 #define SMBLDAP_NUM_RETRIES 8 /* retry only 8 times */
35
36 #define SMBLDAP_IDLE_TIME 150 /* After 2.5 minutes disconnect */
37
38
39 /* attributes used by Samba 2.2 */
40
41 ATTRIB_MAP_ENTRY attrib_map_v22[] = {
42 { LDAP_ATTR_UID, "uid" },
43 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
44 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
45 { LDAP_ATTR_UNIX_HOME, "homeDirectory" },
46 { LDAP_ATTR_PWD_LAST_SET, "pwdLastSet" },
47 { LDAP_ATTR_PWD_CAN_CHANGE, "pwdCanChange" },
48 { LDAP_ATTR_PWD_MUST_CHANGE, "pwdMustChange" },
49 { LDAP_ATTR_LOGON_TIME, "logonTime" },
50 { LDAP_ATTR_LOGOFF_TIME, "logoffTime" },
51 { LDAP_ATTR_KICKOFF_TIME, "kickoffTime" },
52 { LDAP_ATTR_CN, "cn" },
53 { LDAP_ATTR_SN, "sn" },
54 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
55 { LDAP_ATTR_HOME_PATH, "smbHome" },
56 { LDAP_ATTR_HOME_DRIVE, "homeDrive" },
57 { LDAP_ATTR_LOGON_SCRIPT, "scriptPath" },
58 { LDAP_ATTR_PROFILE_PATH, "profilePath" },
59 { LDAP_ATTR_DESC, "description" },
60 { LDAP_ATTR_USER_WKS, "userWorkstations"},
61 { LDAP_ATTR_USER_RID, "rid" },
62 { LDAP_ATTR_PRIMARY_GROUP_RID, "primaryGroupID"},
63 { LDAP_ATTR_LMPW, "lmPassword" },
64 { LDAP_ATTR_NTPW, "ntPassword" },
65 { LDAP_ATTR_DOMAIN, "domain" },
66 { LDAP_ATTR_OBJCLASS, "objectClass" },
67 { LDAP_ATTR_ACB_INFO, "acctFlags" },
68 { LDAP_ATTR_MOD_TIMESTAMP, "modifyTimestamp" },
69 { LDAP_ATTR_LIST_END, NULL }
70 };
71
72 ATTRIB_MAP_ENTRY attrib_map_to_delete_v22[] = {
73 { LDAP_ATTR_PWD_LAST_SET, "pwdLastSet" },
74 { LDAP_ATTR_PWD_CAN_CHANGE, "pwdCanChange" },
75 { LDAP_ATTR_PWD_MUST_CHANGE, "pwdMustChange" },
76 { LDAP_ATTR_LOGON_TIME, "logonTime" },
77 { LDAP_ATTR_LOGOFF_TIME, "logoffTime" },
78 { LDAP_ATTR_KICKOFF_TIME, "kickoffTime" },
79 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
80 { LDAP_ATTR_HOME_PATH, "smbHome" },
81 { LDAP_ATTR_HOME_DRIVE, "homeDrives" },
82 { LDAP_ATTR_LOGON_SCRIPT, "scriptPath" },
83 { LDAP_ATTR_PROFILE_PATH, "profilePath" },
84 { LDAP_ATTR_USER_WKS, "userWorkstations"},
85 { LDAP_ATTR_USER_RID, "rid" },
86 { LDAP_ATTR_PRIMARY_GROUP_RID, "primaryGroupID"},
87 { LDAP_ATTR_LMPW, "lmPassword" },
88 { LDAP_ATTR_NTPW, "ntPassword" },
89 { LDAP_ATTR_DOMAIN, "domain" },
90 { LDAP_ATTR_ACB_INFO, "acctFlags" },
91 { LDAP_ATTR_LIST_END, NULL }
92 };
93
94 /* attributes used by Samba 3.0's sambaSamAccount */
95
96 ATTRIB_MAP_ENTRY attrib_map_v30[] = {
97 { LDAP_ATTR_UID, "uid" },
98 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
99 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
100 { LDAP_ATTR_UNIX_HOME, "homeDirectory" },
101 { LDAP_ATTR_PWD_LAST_SET, "sambaPwdLastSet" },
102 { LDAP_ATTR_PWD_CAN_CHANGE, "sambaPwdCanChange" },
103 { LDAP_ATTR_PWD_MUST_CHANGE, "sambaPwdMustChange" },
104 { LDAP_ATTR_LOGON_TIME, "sambaLogonTime" },
105 { LDAP_ATTR_LOGOFF_TIME, "sambaLogoffTime" },
106 { LDAP_ATTR_KICKOFF_TIME, "sambaKickoffTime" },
107 { LDAP_ATTR_CN, "cn" },
108 { LDAP_ATTR_SN, "sn" },
109 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
110 { LDAP_ATTR_HOME_DRIVE, "sambaHomeDrive" },
111 { LDAP_ATTR_HOME_PATH, "sambaHomePath" },
112 { LDAP_ATTR_LOGON_SCRIPT, "sambaLogonScript" },
113 { LDAP_ATTR_PROFILE_PATH, "sambaProfilePath" },
114 { LDAP_ATTR_DESC, "description" },
115 { LDAP_ATTR_USER_WKS, "sambaUserWorkstations" },
116 { LDAP_ATTR_USER_SID, LDAP_ATTRIBUTE_SID },
117 { LDAP_ATTR_PRIMARY_GROUP_SID, "sambaPrimaryGroupSID" },
118 { LDAP_ATTR_LMPW, "sambaLMPassword" },
119 { LDAP_ATTR_NTPW, "sambaNTPassword" },
120 { LDAP_ATTR_DOMAIN, "sambaDomainName" },
121 { LDAP_ATTR_OBJCLASS, "objectClass" },
122 { LDAP_ATTR_ACB_INFO, "sambaAcctFlags" },
123 { LDAP_ATTR_MUNGED_DIAL, "sambaMungedDial" },
124 { LDAP_ATTR_BAD_PASSWORD_COUNT, "sambaBadPasswordCount" },
125 { LDAP_ATTR_BAD_PASSWORD_TIME, "sambaBadPasswordTime" },
126 { LDAP_ATTR_PWD_HISTORY, "sambaPasswordHistory" },
127 { LDAP_ATTR_MOD_TIMESTAMP, "modifyTimestamp" },
128 { LDAP_ATTR_LOGON_HOURS, "sambaLogonHours" },
129 { LDAP_ATTR_LIST_END, NULL }
130 };
131
132 ATTRIB_MAP_ENTRY attrib_map_to_delete_v30[] = {
133 { LDAP_ATTR_PWD_LAST_SET, "sambaPwdLastSet" },
134 { LDAP_ATTR_PWD_CAN_CHANGE, "sambaPwdCanChange" },
135 { LDAP_ATTR_PWD_MUST_CHANGE, "sambaPwdMustChange" },
136 { LDAP_ATTR_LOGON_TIME, "sambaLogonTime" },
137 { LDAP_ATTR_LOGOFF_TIME, "sambaLogoffTime" },
138 { LDAP_ATTR_KICKOFF_TIME, "sambaKickoffTime" },
139 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
140 { LDAP_ATTR_HOME_DRIVE, "sambaHomeDrive" },
141 { LDAP_ATTR_HOME_PATH, "sambaHomePath" },
142 { LDAP_ATTR_LOGON_SCRIPT, "sambaLogonScript" },
143 { LDAP_ATTR_PROFILE_PATH, "sambaProfilePath" },
144 { LDAP_ATTR_USER_WKS, "sambaUserWorkstations" },
145 { LDAP_ATTR_USER_SID, LDAP_ATTRIBUTE_SID },
146 { LDAP_ATTR_PRIMARY_GROUP_SID, "sambaPrimaryGroupSID" },
147 { LDAP_ATTR_LMPW, "sambaLMPassword" },
148 { LDAP_ATTR_NTPW, "sambaNTPassword" },
149 { LDAP_ATTR_DOMAIN, "sambaDomainName" },
150 { LDAP_ATTR_ACB_INFO, "sambaAcctFlags" },
151 { LDAP_ATTR_MUNGED_DIAL, "sambaMungedDial" },
152 { LDAP_ATTR_BAD_PASSWORD_COUNT, "sambaBadPasswordCount" },
153 { LDAP_ATTR_BAD_PASSWORD_TIME, "sambaBadPasswordTime" },
154 { LDAP_ATTR_PWD_HISTORY, "sambaPasswordHistory" },
155 { LDAP_ATTR_LOGON_HOURS, "sambaLogonHours" },
156 { LDAP_ATTR_LIST_END, NULL }
157 };
158
159 /* attributes used for allocating RIDs */
160
161 ATTRIB_MAP_ENTRY dominfo_attr_list[] = {
162 { LDAP_ATTR_DOMAIN, "sambaDomainName" },
163 { LDAP_ATTR_NEXT_RID, "sambaNextRid" },
164 { LDAP_ATTR_NEXT_USERRID, "sambaNextUserRid" },
165 { LDAP_ATTR_NEXT_GROUPRID, "sambaNextGroupRid" },
166 { LDAP_ATTR_DOM_SID, LDAP_ATTRIBUTE_SID },
167 { LDAP_ATTR_ALGORITHMIC_RID_BASE,"sambaAlgorithmicRidBase"},
168 { LDAP_ATTR_OBJCLASS, "objectClass" },
169 { LDAP_ATTR_LIST_END, NULL },
170 };
171
172 /* Samba 3.0 group mapping attributes */
173
174 ATTRIB_MAP_ENTRY groupmap_attr_list[] = {
175 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
176 { LDAP_ATTR_GROUP_SID, LDAP_ATTRIBUTE_SID },
177 { LDAP_ATTR_GROUP_TYPE, "sambaGroupType" },
178 { LDAP_ATTR_SID_LIST, "sambaSIDList" },
179 { LDAP_ATTR_DESC, "description" },
180 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
181 { LDAP_ATTR_CN, "cn" },
182 { LDAP_ATTR_OBJCLASS, "objectClass" },
183 { LDAP_ATTR_LIST_END, NULL }
184 };
185
186 ATTRIB_MAP_ENTRY groupmap_attr_list_to_delete[] = {
187 { LDAP_ATTR_GROUP_SID, LDAP_ATTRIBUTE_SID },
188 { LDAP_ATTR_GROUP_TYPE, "sambaGroupType" },
189 { LDAP_ATTR_DESC, "description" },
190 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
191 { LDAP_ATTR_SID_LIST, "sambaSIDList" },
192 { LDAP_ATTR_LIST_END, NULL }
193 };
194
195 /* idmap_ldap sambaUnixIdPool */
196
197 ATTRIB_MAP_ENTRY idpool_attr_list[] = {
198 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
199 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
200 { LDAP_ATTR_OBJCLASS, "objectClass" },
201 { LDAP_ATTR_LIST_END, NULL }
202 };
203
204 ATTRIB_MAP_ENTRY sidmap_attr_list[] = {
205 { LDAP_ATTR_SID, LDAP_ATTRIBUTE_SID },
206 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
207 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
208 { LDAP_ATTR_OBJCLASS, "objectClass" },
209 { LDAP_ATTR_LIST_END, NULL }
210 };
211
212 /**********************************************************************
213 perform a simple table lookup and return the attribute name
214 **********************************************************************/
215
216 const char* get_attr_key2string( ATTRIB_MAP_ENTRY table[], int key )
217 {
218 int i = 0;
219
220 while ( table[i].attrib != LDAP_ATTR_LIST_END ) {
221 if ( table[i].attrib == key )
222 return table[i].name;
223 i++;
224 }
225
226 return NULL;
227 }
228
229
230 /**********************************************************************
231 Return the list of attribute names from a mapping table
232 **********************************************************************/
233
234 const char** get_attr_list( TALLOC_CTX *mem_ctx, ATTRIB_MAP_ENTRY table[] )
235 {
236 const char **names;
237 int i = 0;
238
239 while ( table[i].attrib != LDAP_ATTR_LIST_END )
240 i++;
241 i++;
242
243 names = talloc_array( mem_ctx, const char*, i );
244 if ( !names ) {
245 DEBUG(0,("get_attr_list: out of memory\n"));
246 return NULL;
247 }
248
249 i = 0;
250 while ( table[i].attrib != LDAP_ATTR_LIST_END ) {
251 names[i] = talloc_strdup( names, table[i].name );
252 i++;
253 }
254 names[i] = NULL;
255
256 return names;
257 }
258
259 /*******************************************************************
260 Search an attribute and return the first value found.
261 ******************************************************************/
262
263 bool smbldap_get_single_attribute (LDAP * ldap_struct, LDAPMessage * entry,
264 const char *attribute, char *value,
265 int max_len)
266 {
267 char **values;
268 size_t size = 0;
269
270 if ( !attribute )
271 return False;
272
273 value[0] = '\0';
274
275 if ((values = ldap_get_values (ldap_struct, entry, attribute)) == NULL) {
276 DEBUG (10, ("smbldap_get_single_attribute: [%s] = [<does not exist>]\n", attribute));
277
278 return False;
279 }
280
281 if (!convert_string(CH_UTF8, CH_UNIX,values[0], -1, value, max_len, &size)) {
282 DEBUG(1, ("smbldap_get_single_attribute: string conversion of [%s] = [%s] failed!\n",
283 attribute, values[0]));
284 ldap_value_free(values);
285 return False;
286 }
287
288 ldap_value_free(values);
289 #ifdef DEBUG_PASSWORDS
290 DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n", attribute, value));
291 #endif
292 return True;
293 }
294
295 char * smbldap_talloc_single_attribute(LDAP *ldap_struct, LDAPMessage *entry,
296 const char *attribute,
297 TALLOC_CTX *mem_ctx)
298 {
299 char **values;
300 char *result;
301 size_t converted_size;
302
303 if (attribute == NULL) {
304 return NULL;
305 }
306
307 values = ldap_get_values(ldap_struct, entry, attribute);
308
309 if (values == NULL) {
310 DEBUG(10, ("attribute %s does not exist\n", attribute));
311 return NULL;
312 }
313
314 if (ldap_count_values(values) != 1) {
315 DEBUG(10, ("attribute %s has %d values, expected only one\n",
316 attribute, ldap_count_values(values)));
317 ldap_value_free(values);
318 return NULL;
319 }
320
321 if (!pull_utf8_talloc(mem_ctx, &result, values[0], &converted_size)) {
322 DEBUG(10, ("pull_utf8_talloc failed\n"));
323 ldap_value_free(values);
324 return NULL;
325 }
326
327 ldap_value_free(values);
328
329 #ifdef DEBUG_PASSWORDS
330 DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n",
331 attribute, result));
332 #endif
333 return result;
334 }
335
336 char * smbldap_talloc_first_attribute(LDAP *ldap_struct, LDAPMessage *entry,
337 const char *attribute,
338 TALLOC_CTX *mem_ctx)
339 {
340 char **values;
341 char *result;
342 size_t converted_size;
343
344 if (attribute == NULL) {
345 return NULL;
346 }
347
348 values = ldap_get_values(ldap_struct, entry, attribute);
349
350 if (values == NULL) {
351 DEBUG(10, ("attribute %s does not exist\n", attribute));
352 return NULL;
353 }
354
355 if (!pull_utf8_talloc(mem_ctx, &result, values[0], &converted_size)) {
356 DEBUG(10, ("pull_utf8_talloc failed\n"));
357 ldap_value_free(values);
358 return NULL;
359 }
360
361 ldap_value_free(values);
362
363 #ifdef DEBUG_PASSWORDS
364 DEBUG (100, ("smbldap_get_first_attribute: [%s] = [%s]\n",
365 attribute, result));
366 #endif
367 return result;
368 }
369
370 char * smbldap_talloc_smallest_attribute(LDAP *ldap_struct, LDAPMessage *entry,
371 const char *attribute,
372 TALLOC_CTX *mem_ctx)
373 {
374 char **values;
375 char *result;
376 size_t converted_size;
377 int i, num_values;
378
379 if (attribute == NULL) {
380 return NULL;
381 }
382
383 values = ldap_get_values(ldap_struct, entry, attribute);
384
385 if (values == NULL) {
386 DEBUG(10, ("attribute %s does not exist\n", attribute));
387 return NULL;
388 }
389
390 if (!pull_utf8_talloc(mem_ctx, &result, values[0], &converted_size)) {
391 DEBUG(10, ("pull_utf8_talloc failed\n"));
392 ldap_value_free(values);
393 return NULL;
394 }
395
396 num_values = ldap_count_values(values);
397
398 for (i=1; i<num_values; i++) {
399 char *tmp;
400
401 if (!pull_utf8_talloc(mem_ctx, &tmp, values[i],
402 &converted_size)) {
403 DEBUG(10, ("pull_utf8_talloc failed\n"));
404 TALLOC_FREE(result);
405 ldap_value_free(values);
406 return NULL;
407 }
408
409 if (strcasecmp_m(tmp, result) < 0) {
410 TALLOC_FREE(result);
411 result = tmp;
412 } else {
413 TALLOC_FREE(tmp);
414 }
415 }
416
417 ldap_value_free(values);
418
419 #ifdef DEBUG_PASSWORDS
420 DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n",
421 attribute, result));
422 #endif
423 return result;
424 }
425
426 bool smbldap_talloc_single_blob(TALLOC_CTX *mem_ctx, LDAP *ld,
427 LDAPMessage *msg, const char *attrib,
428 DATA_BLOB *blob)
429 {
430 struct berval **values;
431
432 values = ldap_get_values_len(ld, msg, attrib);
433 if (!values) {
434 return false;
435 }
436
437 if (ldap_count_values_len(values) != 1) {
438 DEBUG(10, ("Expected one value for %s, got %d\n", attrib,
439 ldap_count_values_len(values)));
440 return false;
441 }
442
443 *blob = data_blob_talloc(mem_ctx, values[0]->bv_val,
444 values[0]->bv_len);
445 ldap_value_free_len(values);
446
447 return (blob->data != NULL);
448 }
449
450 bool smbldap_pull_sid(LDAP *ld, LDAPMessage *msg, const char *attrib,
451 struct dom_sid *sid)
452 {
453 DATA_BLOB blob;
454 bool ret;
455
456 if (!smbldap_talloc_single_blob(talloc_tos(), ld, msg, attrib,
457 &blob)) {
458 return false;
459 }
460 ret = sid_parse((char *)blob.data, blob.length, sid);
461 TALLOC_FREE(blob.data);
462 return ret;
463 }
464
465 static int ldapmsg_destructor(LDAPMessage **result) {
466 ldap_msgfree(*result);
467 return 0;
468 }
469
470 void talloc_autofree_ldapmsg(TALLOC_CTX *mem_ctx, LDAPMessage *result)
471 {
472 LDAPMessage **handle;
473
474 if (result == NULL) {
475 return;
476 }
477
478 handle = talloc(mem_ctx, LDAPMessage *);
479 SMB_ASSERT(handle != NULL);
480
481 *handle = result;
482 talloc_set_destructor(handle, ldapmsg_destructor);
483 }
484
485 static int ldapmod_destructor(LDAPMod ***mod) {
486 ldap_mods_free(*mod, True);
487 return 0;
488 }
489
490 void talloc_autofree_ldapmod(TALLOC_CTX *mem_ctx, LDAPMod **mod)
491 {
492 LDAPMod ***handle;
493
494 if (mod == NULL) {
495 return;
496 }
497
498 handle = talloc(mem_ctx, LDAPMod **);
499 SMB_ASSERT(handle != NULL);
500
501 *handle = mod;
502 talloc_set_destructor(handle, ldapmod_destructor);
503 }
504
505 /************************************************************************
506 Routine to manage the LDAPMod structure array
507 manage memory used by the array, by each struct, and values
508 ***********************************************************************/
509
510 static void smbldap_set_mod_internal(LDAPMod *** modlist, int modop, const char *attribute, const char *value, const DATA_BLOB *blob)
511 {
512 LDAPMod **mods;
513 int i;
514 int j;
515
516 mods = *modlist;
517
518 /* sanity checks on the mod values */
519
520 if (attribute == NULL || *attribute == '\0') {
521 return;
522 }
523
524 #if 0 /* commented out after discussion with abartlet. Do not reenable.
525 left here so other do not re-add similar code --jerry */
526 if (value == NULL || *value == '\0')
527 return;
528 #endif
529
530 if (mods == NULL) {
531 mods = SMB_MALLOC_P(LDAPMod *);
532 if (mods == NULL) {
533 smb_panic("smbldap_set_mod: out of memory!");
534 /* notreached. */
535 }
536 mods[0] = NULL;
537 }
538
539 for (i = 0; mods[i] != NULL; ++i) {
540 if (mods[i]->mod_op == modop && strequal(mods[i]->mod_type, attribute))
541 break;
542 }
543
544 if (mods[i] == NULL) {
545 mods = SMB_REALLOC_ARRAY (mods, LDAPMod *, i + 2);
546 if (mods == NULL) {
547 smb_panic("smbldap_set_mod: out of memory!");
548 /* notreached. */
549 }
550 mods[i] = SMB_MALLOC_P(LDAPMod);
551 if (mods[i] == NULL) {
552 smb_panic("smbldap_set_mod: out of memory!");
553 /* notreached. */
554 }
555 mods[i]->mod_op = modop;
556 mods[i]->mod_values = NULL;
557 mods[i]->mod_type = SMB_STRDUP(attribute);
558 mods[i + 1] = NULL;
559 }
560
561 if (blob && (modop & LDAP_MOD_BVALUES)) {
562 j = 0;
563 if (mods[i]->mod_bvalues != NULL) {
564 for (; mods[i]->mod_bvalues[j] != NULL; j++);
565 }
566 mods[i]->mod_bvalues = SMB_REALLOC_ARRAY(mods[i]->mod_bvalues, struct berval *, j + 2);
567
568 if (mods[i]->mod_bvalues == NULL) {
569 smb_panic("smbldap_set_mod: out of memory!");
570 /* notreached. */
571 }
572
573 mods[i]->mod_bvalues[j] = SMB_MALLOC_P(struct berval);
574 SMB_ASSERT(mods[i]->mod_bvalues[j] != NULL);
575
576 mods[i]->mod_bvalues[j]->bv_val = (char *)memdup(blob->data, blob->length);
577 SMB_ASSERT(mods[i]->mod_bvalues[j]->bv_val != NULL);
578 mods[i]->mod_bvalues[j]->bv_len = blob->length;
579
580 mods[i]->mod_bvalues[j + 1] = NULL;
581 } else if (value != NULL) {
582 char *utf8_value = NULL;
583 size_t converted_size;
584
585 j = 0;
586 if (mods[i]->mod_values != NULL) {
587 for (; mods[i]->mod_values[j] != NULL; j++);
588 }
589 mods[i]->mod_values = SMB_REALLOC_ARRAY(mods[i]->mod_values, char *, j + 2);
590
591 if (mods[i]->mod_values == NULL) {
592 smb_panic("smbldap_set_mod: out of memory!");
593 /* notreached. */
594 }
595
596 if (!push_utf8_talloc(talloc_tos(), &utf8_value, value, &converted_size)) {
597 smb_panic("smbldap_set_mod: String conversion failure!");
598 /* notreached. */
599 }
600
601 mods[i]->mod_values[j] = SMB_STRDUP(utf8_value);
602 TALLOC_FREE(utf8_value);
603 SMB_ASSERT(mods[i]->mod_values[j] != NULL);
604
605 mods[i]->mod_values[j + 1] = NULL;
606 }
607 *modlist = mods;
608 }
609
610 void smbldap_set_mod (LDAPMod *** modlist, int modop, const char *attribute, const char *value)
611 {
612 smbldap_set_mod_internal(modlist, modop, attribute, value, NULL);
613 }
614
615 void smbldap_set_mod_blob(LDAPMod *** modlist, int modop, const char *attribute, const DATA_BLOB *value)
616 {
617 smbldap_set_mod_internal(modlist, modop | LDAP_MOD_BVALUES, attribute, NULL, value);
618 }
619
620 /**********************************************************************
621 Set attribute to newval in LDAP, regardless of what value the
622 attribute had in LDAP before.
623 *********************************************************************/
624
625 static void smbldap_make_mod_internal(LDAP *ldap_struct, LDAPMessage *existing,
626 LDAPMod ***mods,
627 const char *attribute, int op,
628 const char *newval,
629 const DATA_BLOB *newblob)
630 {
631 char oldval[2048]; /* current largest allowed value is mungeddial */
632 bool existed;
633 DATA_BLOB oldblob = data_blob_null;
634
635 if (attribute == NULL) {
636 /* This can actually happen for ldapsam_compat where we for
637 * example don't have a password history */
638 return;
639 }
640
641 if (existing != NULL) {
642 if (op & LDAP_MOD_BVALUES) {
643 existed = smbldap_talloc_single_blob(talloc_tos(), ldap_struct, existing, attribute, &oldblob);
644 } else {
645 existed = smbldap_get_single_attribute(ldap_struct, existing, attribute, oldval, sizeof(oldval));
646 }
647 } else {
648 existed = False;
649 *oldval = '\0';
650 }
651
652 if (existed) {
653 bool equal = false;
654 if (op & LDAP_MOD_BVALUES) {
655 equal = (newblob && (data_blob_cmp(&oldblob, newblob) == 0));
656 } else {
657 /* all of our string attributes are case insensitive */
658 equal = (newval && (strcasecmp_m(oldval, newval) == 0));
659 }
660
661 if (equal) {
662 /* Believe it or not, but LDAP will deny a delete and
663 an add at the same time if the values are the
664 same... */
665 DEBUG(10,("smbldap_make_mod: attribute |%s| not changed.\n", attribute));
666 return;
667 }
668
669 /* There has been no value before, so don't delete it.
670 * Here's a possible race: We might end up with
671 * duplicate attributes */
672 /* By deleting exactly the value we found in the entry this
673 * should be race-free in the sense that the LDAP-Server will
674 * deny the complete operation if somebody changed the
675 * attribute behind our back. */
676 /* This will also allow modifying single valued attributes
677 * in Novell NDS. In NDS you have to first remove attribute and then
678 * you could add new value */
679
680 if (op & LDAP_MOD_BVALUES) {
681 DEBUG(10,("smbldap_make_mod: deleting attribute |%s| blob\n", attribute));
682 smbldap_set_mod_blob(mods, LDAP_MOD_DELETE, attribute, &oldblob);
683 } else {
684 DEBUG(10,("smbldap_make_mod: deleting attribute |%s| values |%s|\n", attribute, oldval));
685 smbldap_set_mod(mods, LDAP_MOD_DELETE, attribute, oldval);
686 }
687 }
688
689 /* Regardless of the real operation (add or modify)
690 we add the new value here. We rely on deleting
691 the old value, should it exist. */
692
693 if (op & LDAP_MOD_BVALUES) {
694 if (newblob && newblob->length) {
695 DEBUG(10,("smbldap_make_mod: adding attribute |%s| blob\n", attribute));
696 smbldap_set_mod_blob(mods, LDAP_MOD_ADD, attribute, newblob);
697 }
698 } else {
699 if ((newval != NULL) && (strlen(newval) > 0)) {
700 DEBUG(10,("smbldap_make_mod: adding attribute |%s| value |%s|\n", attribute, newval));
701 smbldap_set_mod(mods, LDAP_MOD_ADD, attribute, newval);
702 }
703 }
704 }
705
706 void smbldap_make_mod(LDAP *ldap_struct, LDAPMessage *existing,
707 LDAPMod ***mods,
708 const char *attribute, const char *newval)
709 {
710 smbldap_make_mod_internal(ldap_struct, existing, mods, attribute,
711 0, newval, NULL);
712 }
713
714 void smbldap_make_mod_blob(LDAP *ldap_struct, LDAPMessage *existing,
715 LDAPMod ***mods,
716 const char *attribute, const DATA_BLOB *newblob)
717 {
718 smbldap_make_mod_internal(ldap_struct, existing, mods, attribute,
719 LDAP_MOD_BVALUES, NULL, newblob);
720 }
721
722 /**********************************************************************
723 Some varients of the LDAP rebind code do not pass in the third 'arg'
724 pointer to a void*, so we try and work around it by assuming that the
725 value of the 'LDAP *' pointer is the same as the one we had passed in
726 **********************************************************************/
727
728 struct smbldap_state_lookup {
729 LDAP *ld;
730 struct smbldap_state *smbldap_state;
731 struct smbldap_state_lookup *prev, *next;
732 };
733
734 static struct smbldap_state_lookup *smbldap_state_lookup_list;
735
736 static struct smbldap_state *smbldap_find_state(LDAP *ld)
737 {
738 struct smbldap_state_lookup *t;
739
740 for (t = smbldap_state_lookup_list; t; t = t->next) {
741 if (t->ld == ld) {
742 return t->smbldap_state;
743 }
744 }
745 return NULL;
746 }
747
748 static void smbldap_delete_state(struct smbldap_state *smbldap_state)
749 {
750 struct smbldap_state_lookup *t;
751
752 for (t = smbldap_state_lookup_list; t; t = t->next) {
753 if (t->smbldap_state == smbldap_state) {
754 DLIST_REMOVE(smbldap_state_lookup_list, t);
755 SAFE_FREE(t);
756 return;
757 }
758 }
759 }
760
761 static void smbldap_store_state(LDAP *ld, struct smbldap_state *smbldap_state)
762 {
763 struct smbldap_state *tmp_ldap_state;
764 struct smbldap_state_lookup *t;
765
766 if ((tmp_ldap_state = smbldap_find_state(ld))) {
767 SMB_ASSERT(tmp_ldap_state == smbldap_state);
768 return;
769 }
770
771 t = SMB_XMALLOC_P(struct smbldap_state_lookup);
772 ZERO_STRUCTP(t);
773
774 DLIST_ADD_END(smbldap_state_lookup_list, t, struct smbldap_state_lookup *);
775 t->ld = ld;
776 t->smbldap_state = smbldap_state;
777 }
778
779 /********************************************************************
780 start TLS on an existing LDAP connection
781 *******************************************************************/
782
783 int smb_ldap_start_tls(LDAP *ldap_struct, int version)
784 {
785 #ifdef LDAP_OPT_X_TLS
786 int rc;
787 #endif
788
789 if (lp_ldap_ssl() != LDAP_SSL_START_TLS) {
790 return LDAP_SUCCESS;
791 }
792
793 #ifdef LDAP_OPT_X_TLS
794 if (version != LDAP_VERSION3) {
795 DEBUG(0, ("Need LDAPv3 for Start TLS\n"));
796 return LDAP_OPERATIONS_ERROR;
797 }
798
799 if ((rc = ldap_start_tls_s (ldap_struct, NULL, NULL)) != LDAP_SUCCESS) {
800 DEBUG(0,("Failed to issue the StartTLS instruction: %s\n",
801 ldap_err2string(rc)));
802 return rc;
803 }
804
805 DEBUG (3, ("StartTLS issued: using a TLS connection\n"));
806 return LDAP_SUCCESS;
807 #else
808 DEBUG(0,("StartTLS not supported by LDAP client libraries!\n"));
809 return LDAP_OPERATIONS_ERROR;
810 #endif
811 }
812
813 /********************************************************************
814 setup a connection to the LDAP server based on a uri
815 *******************************************************************/
816
817 static int smb_ldap_setup_conn(LDAP **ldap_struct, const char *uri)
818 {
819 int rc;
820
821 DEBUG(10, ("smb_ldap_setup_connection: %s\n", uri));
822
823 #ifdef HAVE_LDAP_INITIALIZE
824
825 rc = ldap_initialize(ldap_struct, uri);
826 if (rc) {
827 DEBUG(0, ("ldap_initialize: %s\n", ldap_err2string(rc)));
828 return rc;
829 }
830
831 if (lp_ldap_follow_referral() != Auto) {
832 rc = ldap_set_option(*ldap_struct, LDAP_OPT_REFERRALS,
833 lp_ldap_follow_referral() ? LDAP_OPT_ON : LDAP_OPT_OFF);
834 if (rc != LDAP_SUCCESS)
835 DEBUG(0, ("Failed to set LDAP_OPT_REFERRALS: %s\n",
836 ldap_err2string(rc)));
837 }
838
839 return LDAP_SUCCESS;
840 #else
841
842 /* Parse the string manually */
843
844 {
845 int port = 0;
846 fstring protocol;
847 fstring host;
848 SMB_ASSERT(sizeof(protocol)>10 && sizeof(host)>254);
849
850
851 /* skip leading "URL:" (if any) */
852 if ( strnequal( uri, "URL:", 4 ) ) {
853 uri += 4;
854 }
855
856 sscanf(uri, "%10[^:]://%254[^:/]:%d", protocol, host, &port);
857
858 if (port == 0) {
859 if (strequal(protocol, "ldap")) {
860 port = LDAP_PORT;
861 } else if (strequal(protocol, "ldaps")) {
862 port = LDAPS_PORT;
863 } else {
864 DEBUG(0, ("unrecognised protocol (%s)!\n", protocol));
865 }
866 }
867
868 if ((*ldap_struct = ldap_init(host, port)) == NULL) {
869 DEBUG(0, ("ldap_init failed !\n"));
870 return LDAP_OPERATIONS_ERROR;
871 }
872
873 if (strequal(protocol, "ldaps")) {
874 #ifdef LDAP_OPT_X_TLS
875 int tls = LDAP_OPT_X_TLS_HARD;
876 if (ldap_set_option (*ldap_struct, LDAP_OPT_X_TLS, &tls) != LDAP_SUCCESS)
877 {
878 DEBUG(0, ("Failed to setup a TLS session\n"));
879 }
880
881 DEBUG(3,("LDAPS option set...!\n"));
882 #else
883 DEBUG(0,("smbldap_open_connection: Secure connection not supported by LDAP client libraries!\n"));
884 return LDAP_OPERATIONS_ERROR;
885 #endif /* LDAP_OPT_X_TLS */
886 }
887 }
888 #endif /* HAVE_LDAP_INITIALIZE */
889
890 /* now set connection timeout */
891 #ifdef LDAP_X_OPT_CONNECT_TIMEOUT /* Netscape */
892 {
893 int ct = lp_ldap_connection_timeout()*1000;
894 rc = ldap_set_option(*ldap_struct, LDAP_X_OPT_CONNECT_TIMEOUT, &ct);
895 if (rc != LDAP_SUCCESS) {
896 DEBUG(0,("Failed to setup an ldap connection timeout %d: %s\n",
897 ct, ldap_err2string(rc)));
898 }
899 }
900 #elif defined (LDAP_OPT_NETWORK_TIMEOUT) /* OpenLDAP */
901 {
902 struct timeval ct;
903 ct.tv_usec = 0;
904 ct.tv_sec = lp_ldap_connection_timeout();
905 rc = ldap_set_option(*ldap_struct, LDAP_OPT_NETWORK_TIMEOUT, &ct);
906 if (rc != LDAP_SUCCESS) {
907 DEBUG(0,("Failed to setup an ldap connection timeout %d: %s\n",
908 (int)ct.tv_sec, ldap_err2string(rc)));
909 }
910 }
911 #endif
912
913 return LDAP_SUCCESS;
914 }
915
916 /********************************************************************
917 try to upgrade to Version 3 LDAP if not already, in either case return current
918 version
919 *******************************************************************/
920
921 static int smb_ldap_upgrade_conn(LDAP *ldap_struct, int *new_version)
922 {
923 int version;
924 int rc;
925
926 /* assume the worst */
927 *new_version = LDAP_VERSION2;
928
929 rc = ldap_get_option(ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
930 if (rc) {
931 return rc;
932 }
933
934 if (version == LDAP_VERSION3) {
935 *new_version = LDAP_VERSION3;
936 return LDAP_SUCCESS;
937 }
938
939 /* try upgrade */
940 version = LDAP_VERSION3;
941 rc = ldap_set_option (ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
942 if (rc) {
943 return rc;
944 }
945
946 *new_version = LDAP_VERSION3;
947 return LDAP_SUCCESS;
948 }
949
950 /*******************************************************************
951 open a connection to the ldap server (just until the bind)
952 ******************************************************************/
953
954 int smb_ldap_setup_full_conn(LDAP **ldap_struct, const char *uri)
955 {
956 int rc, version;
957
958 rc = smb_ldap_setup_conn(ldap_struct, uri);
959 if (rc) {
960 return rc;
961 }
962
963 rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
964 if (rc) {
965 return rc;
966 }
967
968 rc = smb_ldap_start_tls(*ldap_struct, version);
969 if (rc) {
970 return rc;
971 }
972
973 return LDAP_SUCCESS;
974 }
975
976 /*******************************************************************
977 open a connection to the ldap server.
978 ******************************************************************/
979 static int smbldap_open_connection (struct smbldap_state *ldap_state)
980
981 {
982 int rc = LDAP_SUCCESS;
983 int version;
984 int deref;
985 LDAP **ldap_struct = &ldap_state->ldap_struct;
986
987 rc = smb_ldap_setup_conn(ldap_struct, ldap_state->uri);
988 if (rc) {
989 return rc;
990 }
991
992 /* Store the LDAP pointer in a lookup list */
993
994 smbldap_store_state(*ldap_struct, ldap_state);
995
996 /* Upgrade to LDAPv3 if possible */
997
998 rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
999 if (rc) {
1000 return rc;
1001 }
1002
1003 /* Start TLS if required */
1004
1005 rc = smb_ldap_start_tls(*ldap_struct, version);
1006 if (rc) {
1007 return rc;
1008 }
1009
1010 /* Set alias dereferencing method */
1011 deref = lp_ldap_deref();
1012 if (deref != -1) {
1013 if (ldap_set_option (*ldap_struct, LDAP_OPT_DEREF, &deref) != LDAP_OPT_SUCCESS) {
1014 DEBUG(1,("smbldap_open_connection: Failed to set dereferencing method: %d\n", deref));
1015 } else {
1016 DEBUG(5,("Set dereferencing method: %d\n", deref));
1017 }
1018 }
1019
1020 DEBUG(2, ("smbldap_open_connection: connection opened\n"));
1021 return rc;
1022 }
1023
1024 /*******************************************************************
1025 a rebind function for authenticated referrals
1026 This version takes a void* that we can shove useful stuff in :-)
1027 ******************************************************************/
1028 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
1029 #else
1030 static int rebindproc_with_state (LDAP * ld, char **whop, char **credp,
1031 int *methodp, int freeit, void *arg)
1032 {
1033 struct smbldap_state *ldap_state = arg;
1034 struct timespec ts;
1035
1036 /** @TODO Should we be doing something to check what servers we rebind to?
1037 Could we get a referral to a machine that we don't want to give our
1038 username and password to? */
1039
1040 if (freeit) {
1041 SAFE_FREE(*whop);
1042 if (*credp) {
1043 memset(*credp, '\0', strlen(*credp));
1044 }
1045 SAFE_FREE(*credp);
1046 } else {
1047 DEBUG(5,("rebind_proc_with_state: Rebinding as \"%s\"\n",
1048 ldap_state->bind_dn?ldap_state->bind_dn:"[Anonymous bind]"));
1049
1050 if (ldap_state->anonymous) {
1051 *whop = NULL;
1052 *credp = NULL;
1053 } else {
1054 *whop = SMB_STRDUP(ldap_state->bind_dn);
1055 if (!*whop) {
1056 return LDAP_NO_MEMORY;
1057 }
1058 *credp = SMB_STRDUP(ldap_state->bind_secret);
1059 if (!*credp) {
1060 SAFE_FREE(*whop);
1061 return LDAP_NO_MEMORY;
1062 }
1063 }
1064 *methodp = LDAP_AUTH_SIMPLE;
1065 }
1066
1067 clock_gettime_mono(&ts);
1068 ldap_state->last_rebind = convert_timespec_to_timeval(ts);
1069
1070 return 0;
1071 }
1072 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1073
1074 /*******************************************************************
1075 a rebind function for authenticated referrals
1076 This version takes a void* that we can shove useful stuff in :-)
1077 and actually does the connection.
1078 ******************************************************************/
1079 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
1080 static int rebindproc_connect_with_state (LDAP *ldap_struct,
1081 LDAP_CONST char *url,
1082 ber_tag_t request,
1083 ber_int_t msgid, void *arg)
1084 {
1085 struct smbldap_state *ldap_state =
1086 (struct smbldap_state *)arg;
1087 int rc;
1088 struct timespec ts;
1089 int version;
1090
1091 DEBUG(5,("rebindproc_connect_with_state: Rebinding to %s as \"%s\"\n",
1092 url, ldap_state->bind_dn?ldap_state->bind_dn:"[Anonymous bind]"));
1093
1094 /* call START_TLS again (ldaps:// is handled by the OpenLDAP library
1095 * itself) before rebinding to another LDAP server to avoid to expose
1096 * our credentials. At least *try* to secure the connection - Guenther */
1097
1098 smb_ldap_upgrade_conn(ldap_struct, &version);
1099 smb_ldap_start_tls(ldap_struct, version);
1100
1101 /** @TODO Should we be doing something to check what servers we rebind to?
1102 Could we get a referral to a machine that we don't want to give our
1103 username and password to? */
1104
1105 rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
1106
1107 /* only set the last rebind timestamp when we did rebind after a
1108 * non-read LDAP operation. That way we avoid the replication sleep
1109 * after a simple redirected search operation - Guenther */
1110
1111 switch (request) {
1112
1113 case LDAP_REQ_MODIFY:
1114 case LDAP_REQ_ADD:
1115 case LDAP_REQ_DELETE:
1116 case LDAP_REQ_MODDN:
1117 case LDAP_REQ_EXTENDED:
1118 DEBUG(10,("rebindproc_connect_with_state: "
1119 "setting last_rebind timestamp "
1120 "(req: 0x%02x)\n", (unsigned int)request));
1121 clock_gettime_mono(&ts);
1122 ldap_state->last_rebind = convert_timespec_to_timeval(ts);
1123 break;
1124 default:
1125 ZERO_STRUCT(ldap_state->last_rebind);
1126 break;
1127 }
1128
1129 return rc;
1130 }
1131 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1132
1133 /*******************************************************************
1134 Add a rebind function for authenticated referrals
1135 ******************************************************************/
1136 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
1137 #else
1138 # if LDAP_SET_REBIND_PROC_ARGS == 2
1139 static int rebindproc (LDAP *ldap_struct, char **whop, char **credp,
1140 int *method, int freeit )
1141 {
1142 struct smbldap_state *ldap_state = smbldap_find_state(ldap_struct);
1143
1144 return rebindproc_with_state(ldap_struct, whop, credp,
1145 method, freeit, ldap_state);
1146 }
1147 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
1148 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1149
1150 /*******************************************************************
1151 a rebind function for authenticated referrals
1152 this also does the connection, but no void*.
1153 ******************************************************************/
1154 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
1155 # if LDAP_SET_REBIND_PROC_ARGS == 2
1156 static int rebindproc_connect (LDAP * ld, LDAP_CONST char *url, int request,
1157 ber_int_t msgid)
1158 {
1159 struct smbldap_state *ldap_state = smbldap_find_state(ld);
1160
1161 return rebindproc_connect_with_state(ld, url, (ber_tag_t)request, msgid,
1162 ldap_state);
1163 }
1164 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
1165 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1166
1167 /*******************************************************************
1168 connect to the ldap server under system privilege.
1169 ******************************************************************/
1170 static int smbldap_connect_system(struct smbldap_state *ldap_state)
1171 {
1172 LDAP *ldap_struct = ldap_state->ldap_struct;
1173 int rc;
1174 int version;
1175
1176 if (!ldap_state->anonymous && !ldap_state->bind_dn) {
1177 char *bind_dn = NULL;
1178 char *bind_secret = NULL;
1179
1180 /* get the default dn and password only if they are not set already */
1181 if (!fetch_ldap_pw(&bind_dn, &bind_secret)) {
1182 DEBUG(0, ("ldap_connect_system: Failed to retrieve password from secrets.tdb\n"));
1183 rc = LDAP_INVALID_CREDENTIALS;
1184 goto done;
1185 }
1186 smbldap_set_creds(ldap_state, false, bind_dn, bind_secret);
1187 SAFE_FREE(bind_dn);
1188 memset(bind_secret, '\0', strlen(bind_secret));
1189 SAFE_FREE(bind_secret);
1190 }
1191
1192 /* removed the sasl_bind_s "EXTERNAL" stuff, as my testsuite
1193 (OpenLDAP) doesnt' seem to support it */
1194
1195 DEBUG(10,("ldap_connect_system: Binding to ldap server %s as \"%s\"\n",
1196 ldap_state->uri, ldap_state->bind_dn));
1197
1198 #ifdef HAVE_LDAP_SET_REBIND_PROC
1199 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
1200 # if LDAP_SET_REBIND_PROC_ARGS == 2
1201 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect);
1202 # endif
1203 # if LDAP_SET_REBIND_PROC_ARGS == 3
1204 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect_with_state, (void *)ldap_state);
1205 # endif
1206 #else /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1207 # if LDAP_SET_REBIND_PROC_ARGS == 2
1208 ldap_set_rebind_proc(ldap_struct, &rebindproc);
1209 # endif
1210 # if LDAP_SET_REBIND_PROC_ARGS == 3
1211 ldap_set_rebind_proc(ldap_struct, &rebindproc_with_state, (void *)ldap_state);
1212 # endif
1213 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1214 #endif
1215
1216 rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
1217
1218 if (rc != LDAP_SUCCESS) {
1219 char *ld_error = NULL;
1220 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
1221 &ld_error);
1222 DEBUG(ldap_state->num_failures ? 2 : 0,
1223 ("failed to bind to server %s with dn=\"%s\" Error: %s\n\t%s\n",
1224 ldap_state->uri,
1225 ldap_state->bind_dn ? ldap_state->bind_dn : "[Anonymous bind]",
1226 ldap_err2string(rc),
1227 ld_error ? ld_error : "(unknown)"));
1228 SAFE_FREE(ld_error);
1229 ldap_state->num_failures++;
1230 goto done;
1231 }
1232
1233 ldap_state->num_failures = 0;
1234 ldap_state->paged_results = False;
1235
1236 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
1237
1238 if (smbldap_has_control(ldap_state->ldap_struct, ADS_PAGE_CTL_OID) && version == 3) {
1239 ldap_state->paged_results = True;
1240 }
1241
1242 DEBUG(3, ("ldap_connect_system: successful connection to the LDAP server\n"));
1243 DEBUGADD(10, ("ldap_connect_system: LDAP server %s support paged results\n",
1244 ldap_state->paged_results ? "does" : "does not"));
1245 done:
1246 if (rc != 0) {
1247 ldap_unbind(ldap_struct);
1248 ldap_state->ldap_struct = NULL;
1249 }
1250 return rc;
1251 }
1252
1253 static void smbldap_idle_fn(struct tevent_context *tevent_ctx,
1254 struct timed_event *te,
1255 struct timeval now_abs,
1256 void *private_data);
1257
1258 /**********************************************************************
1259 Connect to LDAP server (called before every ldap operation)
1260 *********************************************************************/
1261 static int smbldap_open(struct smbldap_state *ldap_state)
1262 {
1263 int rc, opt_rc;
1264 bool reopen = False;
1265 SMB_ASSERT(ldap_state);
1266
1267 if ((ldap_state->ldap_struct != NULL) && ((ldap_state->last_ping + SMBLDAP_DONT_PING_TIME) < time_mono(NULL))) {
1268
1269 #ifdef HAVE_UNIXSOCKET
1270 struct sockaddr_un addr;
1271 #else
1272 struct sockaddr addr;
1273 #endif
1274 socklen_t len = sizeof(addr);
1275 int sd;
1276
1277 opt_rc = ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_DESC, &sd);
1278 if (opt_rc == 0 && (getpeername(sd, (struct sockaddr *) &addr, &len)) < 0 )
1279 reopen = True;
1280
1281 #ifdef HAVE_UNIXSOCKET
1282 if (opt_rc == 0 && addr.sun_family == AF_UNIX)
1283 reopen = True;
1284 #endif
1285 if (reopen) {
1286 /* the other end has died. reopen. */
1287 ldap_unbind(ldap_state->ldap_struct);
1288 ldap_state->ldap_struct = NULL;
1289 ldap_state->last_ping = (time_t)0;
1290 } else {
1291 ldap_state->last_ping = time_mono(NULL);
1292 }
1293 }
1294
1295 if (ldap_state->ldap_struct != NULL) {
1296 DEBUG(11,("smbldap_open: already connected to the LDAP server\n"));
1297 return LDAP_SUCCESS;
1298 }
1299
1300 if ((rc = smbldap_open_connection(ldap_state))) {
1301 return rc;
1302 }
1303
1304 if ((rc = smbldap_connect_system(ldap_state))) {
1305 return rc;
1306 }
1307
1308
1309 ldap_state->last_ping = time_mono(NULL);
1310 ldap_state->pid = sys_getpid();
1311
1312 TALLOC_FREE(ldap_state->idle_event);
1313
1314 if (ldap_state->tevent_context != NULL) {
1315 ldap_state->idle_event = tevent_add_timer(
1316 ldap_state->tevent_context, ldap_state,
1317 timeval_current_ofs(SMBLDAP_IDLE_TIME, 0),
1318 smbldap_idle_fn, ldap_state);
1319 }
1320
1321 DEBUG(4,("The LDAP server is successfully connected\n"));
1322
1323 return LDAP_SUCCESS;
1324 }
1325
1326 /**********************************************************************
1327 Disconnect from LDAP server
1328 *********************************************************************/
1329 static NTSTATUS smbldap_close(struct smbldap_state *ldap_state)
1330 {
1331 if (!ldap_state)
1332 return NT_STATUS_INVALID_PARAMETER;
1333
1334 if (ldap_state->ldap_struct != NULL) {
1335 ldap_unbind(ldap_state->ldap_struct);
1336 ldap_state->ldap_struct = NULL;
1337 }
1338
1339 smbldap_delete_state(ldap_state);
1340
1341 TALLOC_FREE(ldap_state->idle_event);
1342
1343 DEBUG(5,("The connection to the LDAP server was closed\n"));
1344 /* maybe free the results here --metze */
1345
1346 return NT_STATUS_OK;
1347 }
1348
1349 static SIG_ATOMIC_T got_alarm;
1350
1351 static void gotalarm_sig(int dummy)
1352 {
1353 got_alarm = 1;
1354 }
1355
1356 static time_t calc_ldap_abs_endtime(int ldap_to)
1357 {
1358 if (ldap_to == 0) {
1359 /* No timeout - don't
1360 return a value for
1361 the alarm. */
1362 return (time_t)0;
1363 }
1364
1365 /* Make the alarm time one second beyond
1366 the timout we're setting for the
1367 remote search timeout, to allow that
1368 to fire in preference. */
1369
1370 return time_mono(NULL)+ldap_to+1;
1371 }
1372
1373 static int end_ldap_local_alarm(time_t absolute_endtime, int rc)
1374 {
1375 if (absolute_endtime) {
1376 alarm(0);
1377 CatchSignal(SIGALRM, SIG_IGN);
1378 if (got_alarm) {
1379 /* Client timeout error code. */
1380 got_alarm = 0;
1381 return LDAP_TIMEOUT;
1382 }
1383 }
1384 return rc;
1385 }
1386
1387 static void setup_ldap_local_alarm(struct smbldap_state *ldap_state, time_t absolute_endtime)
1388 {
1389 time_t now = time_mono(NULL);
1390
1391 if (absolute_endtime) {
1392 got_alarm = 0;
1393 CatchSignal(SIGALRM, gotalarm_sig);
1394 alarm(absolute_endtime - now);
1395 }
1396
1397 if (ldap_state->pid != sys_getpid()) {
1398 smbldap_close(ldap_state);
1399 }
1400 }
1401
1402 static void get_ldap_errs(struct smbldap_state *ldap_state, char **pp_ld_error, int *p_ld_errno)
1403 {
1404 ldap_get_option(ldap_state->ldap_struct,
1405 LDAP_OPT_ERROR_NUMBER, p_ld_errno);
1406
1407 ldap_get_option(ldap_state->ldap_struct,
1408 LDAP_OPT_ERROR_STRING, pp_ld_error);
1409 }
1410
1411 static int get_cached_ldap_connect(struct smbldap_state *ldap_state, time_t abs_endtime)
1412 {
1413 int attempts = 0;
1414
1415 while (1) {
1416 int rc;
1417 time_t now;
1418
1419 now = time_mono(NULL);
1420 ldap_state->last_use = now;
1421
1422 if (abs_endtime && now > abs_endtime) {
1423 smbldap_close(ldap_state);
1424 return LDAP_TIMEOUT;
1425 }
1426
1427 rc = smbldap_open(ldap_state);
1428
1429 if (rc == LDAP_SUCCESS) {
1430 return LDAP_SUCCESS;
1431 }
1432
1433 attempts++;
1434 DEBUG(1, ("Connection to LDAP server failed for the "
1435 "%d try!\n", attempts));
1436
1437 if (rc == LDAP_INSUFFICIENT_ACCESS) {
1438 /* The fact that we are non-root or any other
1439 * access-denied condition will not change in the next
1440 * round of trying */
1441 return rc;
1442 }
1443
1444 if (got_alarm) {
1445 smbldap_close(ldap_state);
1446 return LDAP_TIMEOUT;
1447 }
1448
1449 smb_msleep(1000);
1450
1451 if (got_alarm) {
1452 smbldap_close(ldap_state);
1453 return LDAP_TIMEOUT;
1454 }
1455 }
1456 }
1457
1458 /*********************************************************************
1459 ********************************************************************/
1460
1461 static int smbldap_search_ext(struct smbldap_state *ldap_state,
1462 const char *base, int scope, const char *filter,
1463 const char *attrs[], int attrsonly,
1464 LDAPControl **sctrls, LDAPControl **cctrls,
1465 int sizelimit, LDAPMessage **res)
1466 {
1467 int rc = LDAP_SERVER_DOWN;
1468 char *utf8_filter;
1469 int to = lp_ldap_timeout();
1470 time_t abs_endtime = calc_ldap_abs_endtime(to);
1471 struct timeval timeout;
1472 struct timeval *timeout_ptr = NULL;
1473 size_t converted_size;
1474
1475 SMB_ASSERT(ldap_state);
1476
1477 DEBUG(5,("smbldap_search_ext: base => [%s], filter => [%s], "
1478 "scope => [%d]\n", base, filter, scope));
1479
1480 if (ldap_state->last_rebind.tv_sec > 0) {
1481 struct timeval tval;
1482 struct timespec ts;
1483 int64_t tdiff = 0;
1484 int sleep_time = 0;
1485
1486 clock_gettime_mono(&ts);
1487 tval = convert_timespec_to_timeval(ts);
1488
1489 tdiff = usec_time_diff(&tval, &ldap_state->last_rebind);
1490 tdiff /= 1000; /* Convert to milliseconds. */
1491
1492 sleep_time = lp_ldap_replication_sleep()-(int)tdiff;
1493 sleep_time = MIN(sleep_time, MAX_LDAP_REPLICATION_SLEEP_TIME);
1494
1495 if (sleep_time > 0) {
1496 /* we wait for the LDAP replication */
1497 DEBUG(5,("smbldap_search_ext: waiting %d milliseconds "
1498 "for LDAP replication.\n",sleep_time));
1499 smb_msleep(sleep_time);
1500 DEBUG(5,("smbldap_search_ext: go on!\n"));
1501 }
1502 ZERO_STRUCT(ldap_state->last_rebind);
1503 }
1504
1505 if (!push_utf8_talloc(talloc_tos(), &utf8_filter, filter, &converted_size)) {
1506 return LDAP_NO_MEMORY;
1507 }
1508
1509 /* Setup remote timeout for the ldap_search_ext_s call. */
1510 if (to) {
1511 timeout.tv_sec = to;
1512 timeout.tv_usec = 0;
1513 timeout_ptr = &timeout;
1514 }
1515
1516 setup_ldap_local_alarm(ldap_state, abs_endtime);
1517
1518 while (1) {
1519 char *ld_error = NULL;
1520 int ld_errno;
1521
1522 rc = get_cached_ldap_connect(ldap_state, abs_endtime);
1523 if (rc != LDAP_SUCCESS) {
1524 break;
1525 }
1526
1527 rc = ldap_search_ext_s(ldap_state->ldap_struct, base, scope,
1528 utf8_filter,
1529 discard_const_p(char *, attrs),
1530 attrsonly, sctrls, cctrls, timeout_ptr,
1531 sizelimit, res);
1532 if (rc == LDAP_SUCCESS) {
1533 break;
1534 }
1535
1536 get_ldap_errs(ldap_state, &ld_error, &ld_errno);
1537
1538 DEBUG(10, ("Failed search for base: %s, error: %d (%s) "
1539 "(%s)\n", base, ld_errno,
1540 ldap_err2string(rc),
1541 ld_error ? ld_error : "unknown"));
1542 SAFE_FREE(ld_error);
1543
1544 if (ld_errno != LDAP_SERVER_DOWN) {
1545 break;
1546 }
1547 ldap_unbind(ldap_state->ldap_struct);
1548 ldap_state->ldap_struct = NULL;
1549 }
1550
1551 TALLOC_FREE(utf8_filter);
1552 return end_ldap_local_alarm(abs_endtime, rc);
1553 }
1554
1555 int smbldap_search(struct smbldap_state *ldap_state,
1556 const char *base, int scope, const char *filter,
1557 const char *attrs[], int attrsonly,
1558 LDAPMessage **res)
1559 {
1560 return smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1561 attrsonly, NULL, NULL, LDAP_NO_LIMIT, res);
1562 }
1563
1564 int smbldap_search_paged(struct smbldap_state *ldap_state,
1565 const char *base, int scope, const char *filter,
1566 const char **attrs, int attrsonly, int pagesize,
1567 LDAPMessage **res, void **cookie)
1568 {
1569 LDAPControl pr;
1570 LDAPControl **rcontrols;
1571 LDAPControl *controls[2] = { NULL, NULL};
1572 BerElement *cookie_be = NULL;
1573 struct berval *cookie_bv = NULL;
1574 int tmp = 0, i, rc;
1575 bool critical = True;
1576
1577 *res = NULL;
1578
1579 DEBUG(3,("smbldap_search_paged: base => [%s], filter => [%s],"
1580 "scope => [%d], pagesize => [%d]\n",
1581 base, filter, scope, pagesize));
1582
1583 cookie_be = ber_alloc_t(LBER_USE_DER);
1584 if (cookie_be == NULL) {
1585 DEBUG(0,("smbldap_create_page_control: ber_alloc_t returns "
1586 "NULL\n"));
1587 return LDAP_NO_MEMORY;
1588 }
1589
1590 /* construct cookie */
1591 if (*cookie != NULL) {
1592 ber_printf(cookie_be, "{iO}", (ber_int_t) pagesize, *cookie);
1593 ber_bvfree((struct berval *)*cookie); /* don't need it from last time */
1594 *cookie = NULL;
1595 } else {
1596 ber_printf(cookie_be, "{io}", (ber_int_t) pagesize, "", 0);
1597 }
1598 ber_flatten(cookie_be, &cookie_bv);
1599
1600 pr.ldctl_oid = discard_const_p(char, ADS_PAGE_CTL_OID);
1601 pr.ldctl_iscritical = (char) critical;
1602 pr.ldctl_value.bv_len = cookie_bv->bv_len;
1603 pr.ldctl_value.bv_val = cookie_bv->bv_val;
1604
1605 controls[0] = &pr;
1606 controls[1] = NULL;
1607
1608 rc = smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1609 0, controls, NULL, LDAP_NO_LIMIT, res);
1610
1611 ber_free(cookie_be, 1);
1612 ber_bvfree(cookie_bv);
1613
1614 if (rc != 0) {
1615 DEBUG(3,("smbldap_search_paged: smbldap_search_ext(%s) "
1616 "failed with [%s]\n", filter, ldap_err2string(rc)));
1617 goto done;
1618 }
1619
1620 DEBUG(3,("smbldap_search_paged: search was successful\n"));
1621
1622 rc = ldap_parse_result(ldap_state->ldap_struct, *res, NULL, NULL,
1623 NULL, NULL, &rcontrols, 0);
1624 if (rc != 0) {
1625 DEBUG(3,("smbldap_search_paged: ldap_parse_result failed " \
1626 "with [%s]\n", ldap_err2string(rc)));
1627 goto done;
1628 }
1629
1630 if (rcontrols == NULL)
1631 goto done;
1632
1633 for (i=0; rcontrols[i]; i++) {
1634
1635 if (strcmp(ADS_PAGE_CTL_OID, rcontrols[i]->ldctl_oid) != 0)
1636 continue;
1637
1638 cookie_be = ber_init(&rcontrols[i]->ldctl_value);
1639 ber_scanf(cookie_be,"{iO}", &tmp, &cookie_bv);
1640 /* the berval is the cookie, but must be freed when it is all
1641 done */
1642 if (cookie_bv->bv_len)
1643 *cookie=ber_bvdup(cookie_bv);
1644 else
1645 *cookie=NULL;
1646 ber_bvfree(cookie_bv);
1647 ber_free(cookie_be, 1);
1648 break;
1649 }
1650 ldap_controls_free(rcontrols);
1651 done:
1652 return rc;
1653 }
1654
1655 int smbldap_modify(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1656 {
1657 int rc = LDAP_SERVER_DOWN;
1658 char *utf8_dn;
1659 time_t abs_endtime = calc_ldap_abs_endtime(lp_ldap_timeout());
1660 size_t converted_size;
1661
1662 SMB_ASSERT(ldap_state);
1663
1664 DEBUG(5,("smbldap_modify: dn => [%s]\n", dn ));
1665
1666 if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
1667 return LDAP_NO_MEMORY;
1668 }
1669
1670 setup_ldap_local_alarm(ldap_state, abs_endtime);
1671
1672 while (1) {
1673 char *ld_error = NULL;
1674 int ld_errno;
1675
1676 rc = get_cached_ldap_connect(ldap_state, abs_endtime);
1677 if (rc != LDAP_SUCCESS) {
1678 break;
1679 }
1680
1681 rc = ldap_modify_s(ldap_state->ldap_struct, utf8_dn, attrs);
1682 if (rc == LDAP_SUCCESS) {
1683 break;
1684 }
1685
1686 get_ldap_errs(ldap_state, &ld_error, &ld_errno);
1687
1688 DEBUG(10, ("Failed to modify dn: %s, error: %d (%s) "
1689 "(%s)\n", dn, ld_errno,
1690 ldap_err2string(rc),
1691 ld_error ? ld_error : "unknown"));
1692 SAFE_FREE(ld_error);
1693
1694 if (ld_errno != LDAP_SERVER_DOWN) {
1695 break;
1696 }
1697 ldap_unbind(ldap_state->ldap_struct);
1698 ldap_state->ldap_struct = NULL;
1699 }
1700
1701 TALLOC_FREE(utf8_dn);
1702 return end_ldap_local_alarm(abs_endtime, rc);
1703 }
1704
1705 int smbldap_add(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1706 {
1707 int rc = LDAP_SERVER_DOWN;
1708 char *utf8_dn;
1709 time_t abs_endtime = calc_ldap_abs_endtime(lp_ldap_timeout());
1710 size_t converted_size;
1711
1712 SMB_ASSERT(ldap_state);
1713
1714 DEBUG(5,("smbldap_add: dn => [%s]\n", dn ));
1715
1716 if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
1717 return LDAP_NO_MEMORY;
1718 }
1719
1720 setup_ldap_local_alarm(ldap_state, abs_endtime);
1721
1722 while (1) {
1723 char *ld_error = NULL;
1724 int ld_errno;
1725
1726 rc = get_cached_ldap_connect(ldap_state, abs_endtime);
1727 if (rc != LDAP_SUCCESS) {
1728 break;
1729 }
1730
1731 rc = ldap_add_s(ldap_state->ldap_struct, utf8_dn, attrs);
1732 if (rc == LDAP_SUCCESS) {
1733 break;
1734 }
1735
1736 get_ldap_errs(ldap_state, &ld_error, &ld_errno);
1737
1738 DEBUG(10, ("Failed to add dn: %s, error: %d (%s) "
1739 "(%s)\n", dn, ld_errno,
1740 ldap_err2string(rc),
1741 ld_error ? ld_error : "unknown"));
1742 SAFE_FREE(ld_error);
1743
1744 if (ld_errno != LDAP_SERVER_DOWN) {
1745 break;
1746 }
1747 ldap_unbind(ldap_state->ldap_struct);
1748 ldap_state->ldap_struct = NULL;
1749 }
1750
1751 TALLOC_FREE(utf8_dn);
1752 return end_ldap_local_alarm(abs_endtime, rc);
1753 }
1754
1755 int smbldap_delete(struct smbldap_state *ldap_state, const char *dn)
1756 {
1757 int rc = LDAP_SERVER_DOWN;
1758 char *utf8_dn;
1759 time_t abs_endtime = calc_ldap_abs_endtime(lp_ldap_timeout());
1760 size_t converted_size;
1761
1762 SMB_ASSERT(ldap_state);
1763
1764 DEBUG(5,("smbldap_delete: dn => [%s]\n", dn ));
1765
1766 if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
1767 return LDAP_NO_MEMORY;
1768 }
1769
1770 setup_ldap_local_alarm(ldap_state, abs_endtime);
1771
1772 while (1) {
1773 char *ld_error = NULL;
1774 int ld_errno;
1775
1776 rc = get_cached_ldap_connect(ldap_state, abs_endtime);
1777 if (rc != LDAP_SUCCESS) {
1778 break;
1779 }
1780
1781 rc = ldap_delete_s(ldap_state->ldap_struct, utf8_dn);
1782 if (rc == LDAP_SUCCESS) {
1783 break;
1784 }
1785
1786 get_ldap_errs(ldap_state, &ld_error, &ld_errno);
1787
1788 DEBUG(10, ("Failed to delete dn: %s, error: %d (%s) "
1789 "(%s)\n", dn, ld_errno,
1790 ldap_err2string(rc),
1791 ld_error ? ld_error : "unknown"));
1792 SAFE_FREE(ld_error);
1793
1794 if (ld_errno != LDAP_SERVER_DOWN) {
1795 break;
1796 }
1797 ldap_unbind(ldap_state->ldap_struct);
1798 ldap_state->ldap_struct = NULL;
1799 }
1800
1801 TALLOC_FREE(utf8_dn);
1802 return end_ldap_local_alarm(abs_endtime, rc);
1803 }
1804
1805 int smbldap_extended_operation(struct smbldap_state *ldap_state,
1806 LDAP_CONST char *reqoid, struct berval *reqdata,
1807 LDAPControl **serverctrls, LDAPControl **clientctrls,
1808 char **retoidp, struct berval **retdatap)
1809 {
1810 int rc = LDAP_SERVER_DOWN;
1811 time_t abs_endtime = calc_ldap_abs_endtime(lp_ldap_timeout());
1812
1813 if (!ldap_state)
1814 return (-1);
1815
1816 setup_ldap_local_alarm(ldap_state, abs_endtime);
1817
1818 while (1) {
1819 char *ld_error = NULL;
1820 int ld_errno;
1821
1822 rc = get_cached_ldap_connect(ldap_state, abs_endtime);
1823 if (rc != LDAP_SUCCESS) {
1824 break;
1825 }
1826
1827 rc = ldap_extended_operation_s(ldap_state->ldap_struct, reqoid,
1828 reqdata, serverctrls,
1829 clientctrls, retoidp, retdatap);
1830 if (rc == LDAP_SUCCESS) {
1831 break;
1832 }
1833
1834 get_ldap_errs(ldap_state, &ld_error, &ld_errno);
1835
1836 DEBUG(10, ("Extended operation failed with error: "
1837 "%d (%s) (%s)\n", ld_errno,
1838 ldap_err2string(rc),
1839 ld_error ? ld_error : "unknown"));
1840 SAFE_FREE(ld_error);
1841
1842 if (ld_errno != LDAP_SERVER_DOWN) {
1843 break;
1844 }
1845 ldap_unbind(ldap_state->ldap_struct);
1846 ldap_state->ldap_struct = NULL;
1847 }
1848
1849 return end_ldap_local_alarm(abs_endtime, rc);
1850 }
1851
1852 /*******************************************************************
1853 run the search by name.
1854 ******************************************************************/
1855 int smbldap_search_suffix (struct smbldap_state *ldap_state,
1856 const char *filter, const char **search_attr,
1857 LDAPMessage ** result)
1858 {
1859 return smbldap_search(ldap_state, lp_ldap_suffix(), LDAP_SCOPE_SUBTREE,
1860 filter, search_attr, 0, result);
1861 }
1862
1863 static void smbldap_idle_fn(struct tevent_context *tevent_ctx,
1864 struct timed_event *te,
1865 struct timeval now_abs,
1866 void *private_data)
1867 {
1868 struct smbldap_state *state = (struct smbldap_state *)private_data;
1869
1870 TALLOC_FREE(state->idle_event);
1871
1872 if (state->ldap_struct == NULL) {
1873 DEBUG(10,("ldap connection not connected...\n"));
1874 return;
1875 }
1876
1877 if ((state->last_use+SMBLDAP_IDLE_TIME) > time_mono(NULL)) {
1878 DEBUG(10,("ldap connection not idle...\n"));
1879
1880 /* this needs to be made monotonic clock aware inside tevent: */
1881 state->idle_event = tevent_add_timer(
1882 tevent_ctx, state,
1883 timeval_add(&now_abs, SMBLDAP_IDLE_TIME, 0),
1884 smbldap_idle_fn,
1885 private_data);
1886 return;
1887 }
1888
1889 DEBUG(7,("ldap connection idle...closing connection\n"));
1890 smbldap_close(state);
1891 }
1892
1893 /**********************************************************************
1894 Housekeeping
1895 *********************************************************************/
1896
1897 void smbldap_free_struct(struct smbldap_state **ldap_state)
1898 {
1899 smbldap_close(*ldap_state);
1900
1901 if ((*ldap_state)->bind_secret) {
1902 memset((*ldap_state)->bind_secret, '\0', strlen((*ldap_state)->bind_secret));
1903 }
1904
1905 SAFE_FREE((*ldap_state)->bind_dn);
1906 SAFE_FREE((*ldap_state)->bind_secret);
1907
1908 TALLOC_FREE(*ldap_state);
1909
1910 /* No need to free any further, as it is talloc()ed */
1911 }
1912
1913 static int smbldap_state_destructor(struct smbldap_state *state)
1914 {
1915 smbldap_free_struct(&state);
1916 return 0;
1917 }
1918
1919
1920 /**********************************************************************
1921 Intitalise the 'general' ldap structures, on which ldap operations may be conducted
1922 *********************************************************************/
1923
1924 NTSTATUS smbldap_init(TALLOC_CTX *mem_ctx, struct tevent_context *tevent_ctx,
1925 const char *location,
1926 struct smbldap_state **smbldap_state)
1927 {
1928 *smbldap_state = talloc_zero(mem_ctx, struct smbldap_state);
1929 if (!*smbldap_state) {
1930 DEBUG(0, ("talloc() failed for ldapsam private_data!\n"));
1931 return NT_STATUS_NO_MEMORY;
1932 }
1933
1934 if (location) {
1935 (*smbldap_state)->uri = talloc_strdup(mem_ctx, location);
1936 } else {
1937 (*smbldap_state)->uri = "ldap://localhost";
1938 }
1939
1940 (*smbldap_state)->tevent_context = tevent_ctx;
1941
1942 talloc_set_destructor(*smbldap_state, smbldap_state_destructor);
1943 return NT_STATUS_OK;
1944 }
1945
1946 char *smbldap_talloc_dn(TALLOC_CTX *mem_ctx, LDAP *ld,
1947 LDAPMessage *entry)
1948 {
1949 char *utf8_dn, *unix_dn;
1950 size_t converted_size;
1951
1952 utf8_dn = ldap_get_dn(ld, entry);
1953 if (!utf8_dn) {
1954 DEBUG (5, ("smbldap_talloc_dn: ldap_get_dn failed\n"));
1955 return NULL;
1956 }
1957 if (!pull_utf8_talloc(mem_ctx, &unix_dn, utf8_dn, &converted_size)) {
1958 DEBUG (0, ("smbldap_talloc_dn: String conversion failure utf8 "
1959 "[%s]\n", utf8_dn));
1960 return NULL;
1961 }
1962 ldap_memfree(utf8_dn);
1963 return unix_dn;
1964 }
1965
1966 /*******************************************************************
1967 Check if root-dse has a certain Control or Extension
1968 ********************************************************************/
1969
1970 static bool smbldap_check_root_dse(LDAP *ld, const char **attrs, const char *value)
1971 {
1972 LDAPMessage *msg = NULL;
1973 LDAPMessage *entry = NULL;
1974 char **values = NULL;
1975 int rc, num_result, num_values, i;
1976 bool result = False;
1977
1978 if (!attrs[0]) {
1979 DEBUG(3,("smbldap_check_root_dse: nothing to look for\n"));
1980 return False;
1981 }
1982
1983 if (!strequal(attrs[0], "supportedExtension") &&
1984 !strequal(attrs[0], "supportedControl") &&
1985 !strequal(attrs[0], "namingContexts")) {
1986 DEBUG(3,("smbldap_check_root_dse: no idea what to query root-dse for: %s ?\n", attrs[0]));
1987 return False;
1988 }
1989
1990 rc = ldap_search_s(ld, "", LDAP_SCOPE_BASE,
1991 "(objectclass=*)", discard_const_p(char *, attrs), 0 , &msg);
1992
1993 if (rc != LDAP_SUCCESS) {
1994 DEBUG(3,("smbldap_check_root_dse: Could not search rootDSE\n"));
1995 return False;
1996 }
1997
1998 num_result = ldap_count_entries(ld, msg);
1999
2000 if (num_result != 1) {
2001 DEBUG(3,("smbldap_check_root_dse: Expected one rootDSE, got %d\n", num_result));
2002 goto done;
2003 }
2004
2005 entry = ldap_first_entry(ld, msg);
2006
2007 if (entry == NULL) {
2008 DEBUG(3,("smbldap_check_root_dse: Could not retrieve rootDSE\n"));
2009 goto done;
2010 }
2011
2012 values = ldap_get_values(ld, entry, attrs[0]);
2013
2014 if (values == NULL) {
2015 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not support any %s\n", attrs[0]));
2016 goto done;
2017 }
2018
2019 num_values = ldap_count_values(values);
2020
2021 if (num_values == 0) {
2022 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not have any %s\n", attrs[0]));
2023 goto done;
2024 }
2025
2026 for (i=0; i<num_values; i++) {
2027 if (strcmp(values[i], value) == 0)
2028 result = True;
2029 }
2030
2031
2032 done:
2033 if (values != NULL)
2034 ldap_value_free(values);
2035 if (msg != NULL)
2036 ldap_msgfree(msg);
2037
2038 return result;
2039
2040 }
2041
2042 /*******************************************************************
2043 Check if LDAP-Server supports a certain Control (OID in string format)
2044 ********************************************************************/
2045
2046 bool smbldap_has_control(LDAP *ld, const char *control)
2047 {
2048 const char *attrs[] = { "supportedControl", NULL };
2049 return smbldap_check_root_dse(ld, attrs, control);
2050 }
2051
2052 /*******************************************************************
2053 Check if LDAP-Server supports a certain Extension (OID in string format)
2054 ********************************************************************/
2055
2056 bool smbldap_has_extension(LDAP *ld, const char *extension)
2057 {
2058 const char *attrs[] = { "supportedExtension", NULL };
2059 return smbldap_check_root_dse(ld, attrs, extension);
2060 }
2061
2062 /*******************************************************************
2063 Check if LDAP-Server holds a given namingContext
2064 ********************************************************************/
2065
2066 bool smbldap_has_naming_context(LDAP *ld, const char *naming_context)
2067 {
2068 const char *attrs[] = { "namingContexts", NULL };
2069 return smbldap_check_root_dse(ld, attrs, naming_context);
2070 }
2071
2072 bool smbldap_set_creds(struct smbldap_state *ldap_state, bool anon, const char *dn, const char *secret)
2073 {
2074 ldap_state->anonymous = anon;
2075
2076 /* free any previously set credential */
2077
2078 SAFE_FREE(ldap_state->bind_dn);
2079 if (ldap_state->bind_secret) {
2080 /* make sure secrets are zeroed out of memory */
2081 memset(ldap_state->bind_secret, '\0', strlen(ldap_state->bind_secret));
2082 SAFE_FREE(ldap_state->bind_secret);
2083 }
2084
2085 if ( ! anon) {
2086 ldap_state->bind_dn = SMB_STRDUP(dn);
2087 ldap_state->bind_secret = SMB_STRDUP(secret);
2088 }
2089
2090 return True;
2091 }