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Second part of fix for bug 8953 - winbind can hang as nbt_getdc() has no timeout.
[Samba.git] / source3 / lib / smbldap.c
blob1d507fb69633ded5cf04d96710e2a75eac5a9e6e
1 /*
2 Unix SMB/CIFS implementation.
3 LDAP protocol helper functions for SAMBA
4 Copyright (C) Jean François Micouleau 1998
5 Copyright (C) Gerald Carter 2001-2003
6 Copyright (C) Shahms King 2001
7 Copyright (C) Andrew Bartlett 2002-2003
8 Copyright (C) Stefan (metze) Metzmacher 2002-2003
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
22
23 */
24
25 #include "includes.h"
26 #include "smbldap.h"
27 #include "secrets.h"
28 #include "../libcli/security/security.h"
29
30 /* Try not to hit the up or down server forever */
31
32 #define SMBLDAP_DONT_PING_TIME 10 /* ping only all 10 seconds */
33 #define SMBLDAP_NUM_RETRIES 8 /* retry only 8 times */
34
35 #define SMBLDAP_IDLE_TIME 150 /* After 2.5 minutes disconnect */
36
37
38 /* attributes used by Samba 2.2 */
39
40 ATTRIB_MAP_ENTRY attrib_map_v22[] = {
41 { LDAP_ATTR_UID, "uid" },
42 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
43 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
44 { LDAP_ATTR_UNIX_HOME, "homeDirectory" },
45 { LDAP_ATTR_PWD_LAST_SET, "pwdLastSet" },
46 { LDAP_ATTR_PWD_CAN_CHANGE, "pwdCanChange" },
47 { LDAP_ATTR_PWD_MUST_CHANGE, "pwdMustChange" },
48 { LDAP_ATTR_LOGON_TIME, "logonTime" },
49 { LDAP_ATTR_LOGOFF_TIME, "logoffTime" },
50 { LDAP_ATTR_KICKOFF_TIME, "kickoffTime" },
51 { LDAP_ATTR_CN, "cn" },
52 { LDAP_ATTR_SN, "sn" },
53 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
54 { LDAP_ATTR_HOME_PATH, "smbHome" },
55 { LDAP_ATTR_HOME_DRIVE, "homeDrive" },
56 { LDAP_ATTR_LOGON_SCRIPT, "scriptPath" },
57 { LDAP_ATTR_PROFILE_PATH, "profilePath" },
58 { LDAP_ATTR_DESC, "description" },
59 { LDAP_ATTR_USER_WKS, "userWorkstations"},
60 { LDAP_ATTR_USER_RID, "rid" },
61 { LDAP_ATTR_PRIMARY_GROUP_RID, "primaryGroupID"},
62 { LDAP_ATTR_LMPW, "lmPassword" },
63 { LDAP_ATTR_NTPW, "ntPassword" },
64 { LDAP_ATTR_DOMAIN, "domain" },
65 { LDAP_ATTR_OBJCLASS, "objectClass" },
66 { LDAP_ATTR_ACB_INFO, "acctFlags" },
67 { LDAP_ATTR_MOD_TIMESTAMP, "modifyTimestamp" },
68 { LDAP_ATTR_LIST_END, NULL }
69 };
70
71 ATTRIB_MAP_ENTRY attrib_map_to_delete_v22[] = {
72 { LDAP_ATTR_PWD_LAST_SET, "pwdLastSet" },
73 { LDAP_ATTR_PWD_CAN_CHANGE, "pwdCanChange" },
74 { LDAP_ATTR_PWD_MUST_CHANGE, "pwdMustChange" },
75 { LDAP_ATTR_LOGON_TIME, "logonTime" },
76 { LDAP_ATTR_LOGOFF_TIME, "logoffTime" },
77 { LDAP_ATTR_KICKOFF_TIME, "kickoffTime" },
78 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
79 { LDAP_ATTR_HOME_PATH, "smbHome" },
80 { LDAP_ATTR_HOME_DRIVE, "homeDrives" },
81 { LDAP_ATTR_LOGON_SCRIPT, "scriptPath" },
82 { LDAP_ATTR_PROFILE_PATH, "profilePath" },
83 { LDAP_ATTR_USER_WKS, "userWorkstations"},
84 { LDAP_ATTR_USER_RID, "rid" },
85 { LDAP_ATTR_PRIMARY_GROUP_RID, "primaryGroupID"},
86 { LDAP_ATTR_LMPW, "lmPassword" },
87 { LDAP_ATTR_NTPW, "ntPassword" },
88 { LDAP_ATTR_DOMAIN, "domain" },
89 { LDAP_ATTR_ACB_INFO, "acctFlags" },
90 { LDAP_ATTR_LIST_END, NULL }
91 };
92
93 /* attributes used by Samba 3.0's sambaSamAccount */
94
95 ATTRIB_MAP_ENTRY attrib_map_v30[] = {
96 { LDAP_ATTR_UID, "uid" },
97 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
98 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
99 { LDAP_ATTR_UNIX_HOME, "homeDirectory" },
100 { LDAP_ATTR_PWD_LAST_SET, "sambaPwdLastSet" },
101 { LDAP_ATTR_PWD_CAN_CHANGE, "sambaPwdCanChange" },
102 { LDAP_ATTR_PWD_MUST_CHANGE, "sambaPwdMustChange" },
103 { LDAP_ATTR_LOGON_TIME, "sambaLogonTime" },
104 { LDAP_ATTR_LOGOFF_TIME, "sambaLogoffTime" },
105 { LDAP_ATTR_KICKOFF_TIME, "sambaKickoffTime" },
106 { LDAP_ATTR_CN, "cn" },
107 { LDAP_ATTR_SN, "sn" },
108 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
109 { LDAP_ATTR_HOME_DRIVE, "sambaHomeDrive" },
110 { LDAP_ATTR_HOME_PATH, "sambaHomePath" },
111 { LDAP_ATTR_LOGON_SCRIPT, "sambaLogonScript" },
112 { LDAP_ATTR_PROFILE_PATH, "sambaProfilePath" },
113 { LDAP_ATTR_DESC, "description" },
114 { LDAP_ATTR_USER_WKS, "sambaUserWorkstations" },
115 { LDAP_ATTR_USER_SID, LDAP_ATTRIBUTE_SID },
116 { LDAP_ATTR_PRIMARY_GROUP_SID, "sambaPrimaryGroupSID" },
117 { LDAP_ATTR_LMPW, "sambaLMPassword" },
118 { LDAP_ATTR_NTPW, "sambaNTPassword" },
119 { LDAP_ATTR_DOMAIN, "sambaDomainName" },
120 { LDAP_ATTR_OBJCLASS, "objectClass" },
121 { LDAP_ATTR_ACB_INFO, "sambaAcctFlags" },
122 { LDAP_ATTR_MUNGED_DIAL, "sambaMungedDial" },
123 { LDAP_ATTR_BAD_PASSWORD_COUNT, "sambaBadPasswordCount" },
124 { LDAP_ATTR_BAD_PASSWORD_TIME, "sambaBadPasswordTime" },
125 { LDAP_ATTR_PWD_HISTORY, "sambaPasswordHistory" },
126 { LDAP_ATTR_MOD_TIMESTAMP, "modifyTimestamp" },
127 { LDAP_ATTR_LOGON_HOURS, "sambaLogonHours" },
128 { LDAP_ATTR_LIST_END, NULL }
129 };
130
131 ATTRIB_MAP_ENTRY attrib_map_to_delete_v30[] = {
132 { LDAP_ATTR_PWD_LAST_SET, "sambaPwdLastSet" },
133 { LDAP_ATTR_PWD_CAN_CHANGE, "sambaPwdCanChange" },
134 { LDAP_ATTR_PWD_MUST_CHANGE, "sambaPwdMustChange" },
135 { LDAP_ATTR_LOGON_TIME, "sambaLogonTime" },
136 { LDAP_ATTR_LOGOFF_TIME, "sambaLogoffTime" },
137 { LDAP_ATTR_KICKOFF_TIME, "sambaKickoffTime" },
138 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
139 { LDAP_ATTR_HOME_DRIVE, "sambaHomeDrive" },
140 { LDAP_ATTR_HOME_PATH, "sambaHomePath" },
141 { LDAP_ATTR_LOGON_SCRIPT, "sambaLogonScript" },
142 { LDAP_ATTR_PROFILE_PATH, "sambaProfilePath" },
143 { LDAP_ATTR_USER_WKS, "sambaUserWorkstations" },
144 { LDAP_ATTR_USER_SID, LDAP_ATTRIBUTE_SID },
145 { LDAP_ATTR_PRIMARY_GROUP_SID, "sambaPrimaryGroupSID" },
146 { LDAP_ATTR_LMPW, "sambaLMPassword" },
147 { LDAP_ATTR_NTPW, "sambaNTPassword" },
148 { LDAP_ATTR_DOMAIN, "sambaDomainName" },
149 { LDAP_ATTR_ACB_INFO, "sambaAcctFlags" },
150 { LDAP_ATTR_MUNGED_DIAL, "sambaMungedDial" },
151 { LDAP_ATTR_BAD_PASSWORD_COUNT, "sambaBadPasswordCount" },
152 { LDAP_ATTR_BAD_PASSWORD_TIME, "sambaBadPasswordTime" },
153 { LDAP_ATTR_PWD_HISTORY, "sambaPasswordHistory" },
154 { LDAP_ATTR_LOGON_HOURS, "sambaLogonHours" },
155 { LDAP_ATTR_LIST_END, NULL }
156 };
157
158 /* attributes used for allocating RIDs */
159
160 ATTRIB_MAP_ENTRY dominfo_attr_list[] = {
161 { LDAP_ATTR_DOMAIN, "sambaDomainName" },
162 { LDAP_ATTR_NEXT_RID, "sambaNextRid" },
163 { LDAP_ATTR_NEXT_USERRID, "sambaNextUserRid" },
164 { LDAP_ATTR_NEXT_GROUPRID, "sambaNextGroupRid" },
165 { LDAP_ATTR_DOM_SID, LDAP_ATTRIBUTE_SID },
166 { LDAP_ATTR_ALGORITHMIC_RID_BASE,"sambaAlgorithmicRidBase"},
167 { LDAP_ATTR_OBJCLASS, "objectClass" },
168 { LDAP_ATTR_LIST_END, NULL },
169 };
170
171 /* Samba 3.0 group mapping attributes */
172
173 ATTRIB_MAP_ENTRY groupmap_attr_list[] = {
174 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
175 { LDAP_ATTR_GROUP_SID, LDAP_ATTRIBUTE_SID },
176 { LDAP_ATTR_GROUP_TYPE, "sambaGroupType" },
177 { LDAP_ATTR_SID_LIST, "sambaSIDList" },
178 { LDAP_ATTR_DESC, "description" },
179 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
180 { LDAP_ATTR_CN, "cn" },
181 { LDAP_ATTR_OBJCLASS, "objectClass" },
182 { LDAP_ATTR_LIST_END, NULL }
183 };
184
185 ATTRIB_MAP_ENTRY groupmap_attr_list_to_delete[] = {
186 { LDAP_ATTR_GROUP_SID, LDAP_ATTRIBUTE_SID },
187 { LDAP_ATTR_GROUP_TYPE, "sambaGroupType" },
188 { LDAP_ATTR_DESC, "description" },
189 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
190 { LDAP_ATTR_SID_LIST, "sambaSIDList" },
191 { LDAP_ATTR_LIST_END, NULL }
192 };
193
194 /* idmap_ldap sambaUnixIdPool */
195
196 ATTRIB_MAP_ENTRY idpool_attr_list[] = {
197 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
198 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
199 { LDAP_ATTR_OBJCLASS, "objectClass" },
200 { LDAP_ATTR_LIST_END, NULL }
201 };
202
203 ATTRIB_MAP_ENTRY sidmap_attr_list[] = {
204 { LDAP_ATTR_SID, LDAP_ATTRIBUTE_SID },
205 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
206 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
207 { LDAP_ATTR_OBJCLASS, "objectClass" },
208 { LDAP_ATTR_LIST_END, NULL }
209 };
210
211 /**********************************************************************
212 perform a simple table lookup and return the attribute name
213 **********************************************************************/
214
215 const char* get_attr_key2string( ATTRIB_MAP_ENTRY table[], int key )
216 {
217 int i = 0;
218
219 while ( table[i].attrib != LDAP_ATTR_LIST_END ) {
220 if ( table[i].attrib == key )
221 return table[i].name;
222 i++;
223 }
224
225 return NULL;
226 }
227
228
229 /**********************************************************************
230 Return the list of attribute names from a mapping table
231 **********************************************************************/
232
233 const char** get_attr_list( TALLOC_CTX *mem_ctx, ATTRIB_MAP_ENTRY table[] )
234 {
235 const char **names;
236 int i = 0;
237
238 while ( table[i].attrib != LDAP_ATTR_LIST_END )
239 i++;
240 i++;
241
242 names = TALLOC_ARRAY( mem_ctx, const char*, i );
243 if ( !names ) {
244 DEBUG(0,("get_attr_list: out of memory\n"));
245 return NULL;
246 }
247
248 i = 0;
249 while ( table[i].attrib != LDAP_ATTR_LIST_END ) {
250 names[i] = talloc_strdup( names, table[i].name );
251 i++;
252 }
253 names[i] = NULL;
254
255 return names;
256 }
257
258 /*******************************************************************
259 Search an attribute and return the first value found.
260 ******************************************************************/
261
262 bool smbldap_get_single_attribute (LDAP * ldap_struct, LDAPMessage * entry,
263 const char *attribute, char *value,
264 int max_len)
265 {
266 char **values;
267
268 if ( !attribute )
269 return False;
270
271 value[0] = '\0';
272
273 if ((values = ldap_get_values (ldap_struct, entry, attribute)) == NULL) {
274 DEBUG (10, ("smbldap_get_single_attribute: [%s] = [<does not exist>]\n", attribute));
275
276 return False;
277 }
278
279 if (convert_string(CH_UTF8, CH_UNIX,values[0], -1, value, max_len, False) == (size_t)-1) {
280 DEBUG(1, ("smbldap_get_single_attribute: string conversion of [%s] = [%s] failed!\n",
281 attribute, values[0]));
282 ldap_value_free(values);
283 return False;
284 }
285
286 ldap_value_free(values);
287 #ifdef DEBUG_PASSWORDS
288 DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n", attribute, value));
289 #endif
290 return True;
291 }
292
293 char * smbldap_talloc_single_attribute(LDAP *ldap_struct, LDAPMessage *entry,
294 const char *attribute,
295 TALLOC_CTX *mem_ctx)
296 {
297 char **values;
298 char *result;
299 size_t converted_size;
300
301 if (attribute == NULL) {
302 return NULL;
303 }
304
305 values = ldap_get_values(ldap_struct, entry, attribute);
306
307 if (values == NULL) {
308 DEBUG(10, ("attribute %s does not exist\n", attribute));
309 return NULL;
310 }
311
312 if (ldap_count_values(values) != 1) {
313 DEBUG(10, ("attribute %s has %d values, expected only one\n",
314 attribute, ldap_count_values(values)));
315 ldap_value_free(values);
316 return NULL;
317 }
318
319 if (!pull_utf8_talloc(mem_ctx, &result, values[0], &converted_size)) {
320 DEBUG(10, ("pull_utf8_talloc failed\n"));
321 ldap_value_free(values);
322 return NULL;
323 }
324
325 ldap_value_free(values);
326
327 #ifdef DEBUG_PASSWORDS
328 DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n",
329 attribute, result));
330 #endif
331 return result;
332 }
333
334 char * smbldap_talloc_first_attribute(LDAP *ldap_struct, LDAPMessage *entry,
335 const char *attribute,
336 TALLOC_CTX *mem_ctx)
337 {
338 char **values;
339 char *result;
340 size_t converted_size;
341
342 if (attribute == NULL) {
343 return NULL;
344 }
345
346 values = ldap_get_values(ldap_struct, entry, attribute);
347
348 if (values == NULL) {
349 DEBUG(10, ("attribute %s does not exist\n", attribute));
350 return NULL;
351 }
352
353 if (!pull_utf8_talloc(mem_ctx, &result, values[0], &converted_size)) {
354 DEBUG(10, ("pull_utf8_talloc failed\n"));
355 ldap_value_free(values);
356 return NULL;
357 }
358
359 ldap_value_free(values);
360
361 #ifdef DEBUG_PASSWORDS
362 DEBUG (100, ("smbldap_get_first_attribute: [%s] = [%s]\n",
363 attribute, result));
364 #endif
365 return result;
366 }
367
368 char * smbldap_talloc_smallest_attribute(LDAP *ldap_struct, LDAPMessage *entry,
369 const char *attribute,
370 TALLOC_CTX *mem_ctx)
371 {
372 char **values;
373 char *result;
374 size_t converted_size;
375 int i, num_values;
376
377 if (attribute == NULL) {
378 return NULL;
379 }
380
381 values = ldap_get_values(ldap_struct, entry, attribute);
382
383 if (values == NULL) {
384 DEBUG(10, ("attribute %s does not exist\n", attribute));
385 return NULL;
386 }
387
388 if (!pull_utf8_talloc(mem_ctx, &result, values[0], &converted_size)) {
389 DEBUG(10, ("pull_utf8_talloc failed\n"));
390 ldap_value_free(values);
391 return NULL;
392 }
393
394 num_values = ldap_count_values(values);
395
396 for (i=1; i<num_values; i++) {
397 char *tmp;
398
399 if (!pull_utf8_talloc(mem_ctx, &tmp, values[i],
400 &converted_size)) {
401 DEBUG(10, ("pull_utf8_talloc failed\n"));
402 TALLOC_FREE(result);
403 ldap_value_free(values);
404 return NULL;
405 }
406
407 if (StrCaseCmp(tmp, result) < 0) {
408 TALLOC_FREE(result);
409 result = tmp;
410 } else {
411 TALLOC_FREE(tmp);
412 }
413 }
414
415 ldap_value_free(values);
416
417 #ifdef DEBUG_PASSWORDS
418 DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n",
419 attribute, result));
420 #endif
421 return result;
422 }
423
424 bool smbldap_talloc_single_blob(TALLOC_CTX *mem_ctx, LDAP *ld,
425 LDAPMessage *msg, const char *attrib,
426 DATA_BLOB *blob)
427 {
428 struct berval **values;
429
430 values = ldap_get_values_len(ld, msg, attrib);
431 if (!values) {
432 return false;
433 }
434
435 if (ldap_count_values_len(values) != 1) {
436 DEBUG(10, ("Expected one value for %s, got %d\n", attrib,
437 ldap_count_values_len(values)));
438 return false;
439 }
440
441 *blob = data_blob_talloc(mem_ctx, values[0]->bv_val,
442 values[0]->bv_len);
443 ldap_value_free_len(values);
444
445 return (blob->data != NULL);
446 }
447
448 bool smbldap_pull_sid(LDAP *ld, LDAPMessage *msg, const char *attrib,
449 struct dom_sid *sid)
450 {
451 DATA_BLOB blob;
452 bool ret;
453
454 if (!smbldap_talloc_single_blob(talloc_tos(), ld, msg, attrib,
455 &blob)) {
456 return false;
457 }
458 ret = sid_parse((char *)blob.data, blob.length, sid);
459 TALLOC_FREE(blob.data);
460 return ret;
461 }
462
463 static int ldapmsg_destructor(LDAPMessage **result) {
464 ldap_msgfree(*result);
465 return 0;
466 }
467
468 void talloc_autofree_ldapmsg(TALLOC_CTX *mem_ctx, LDAPMessage *result)
469 {
470 LDAPMessage **handle;
471
472 if (result == NULL) {
473 return;
474 }
475
476 handle = TALLOC_P(mem_ctx, LDAPMessage *);
477 SMB_ASSERT(handle != NULL);
478
479 *handle = result;
480 talloc_set_destructor(handle, ldapmsg_destructor);
481 }
482
483 static int ldapmod_destructor(LDAPMod ***mod) {
484 ldap_mods_free(*mod, True);
485 return 0;
486 }
487
488 void talloc_autofree_ldapmod(TALLOC_CTX *mem_ctx, LDAPMod **mod)
489 {
490 LDAPMod ***handle;
491
492 if (mod == NULL) {
493 return;
494 }
495
496 handle = TALLOC_P(mem_ctx, LDAPMod **);
497 SMB_ASSERT(handle != NULL);
498
499 *handle = mod;
500 talloc_set_destructor(handle, ldapmod_destructor);
501 }
502
503 /************************************************************************
504 Routine to manage the LDAPMod structure array
505 manage memory used by the array, by each struct, and values
506 ***********************************************************************/
507
508 static void smbldap_set_mod_internal(LDAPMod *** modlist, int modop, const char *attribute, const char *value, const DATA_BLOB *blob)
509 {
510 LDAPMod **mods;
511 int i;
512 int j;
513
514 mods = *modlist;
515
516 /* sanity checks on the mod values */
517
518 if (attribute == NULL || *attribute == '\0') {
519 return;
520 }
521
522 #if 0 /* commented out after discussion with abartlet. Do not reenable.
523 left here so other do not re-add similar code --jerry */
524 if (value == NULL || *value == '\0')
525 return;
526 #endif
527
528 if (mods == NULL) {
529 mods = SMB_MALLOC_P(LDAPMod *);
530 if (mods == NULL) {
531 smb_panic("smbldap_set_mod: out of memory!");
532 /* notreached. */
533 }
534 mods[0] = NULL;
535 }
536
537 for (i = 0; mods[i] != NULL; ++i) {
538 if (mods[i]->mod_op == modop && strequal(mods[i]->mod_type, attribute))
539 break;
540 }
541
542 if (mods[i] == NULL) {
543 mods = SMB_REALLOC_ARRAY (mods, LDAPMod *, i + 2);
544 if (mods == NULL) {
545 smb_panic("smbldap_set_mod: out of memory!");
546 /* notreached. */
547 }
548 mods[i] = SMB_MALLOC_P(LDAPMod);
549 if (mods[i] == NULL) {
550 smb_panic("smbldap_set_mod: out of memory!");
551 /* notreached. */
552 }
553 mods[i]->mod_op = modop;
554 mods[i]->mod_values = NULL;
555 mods[i]->mod_type = SMB_STRDUP(attribute);
556 mods[i + 1] = NULL;
557 }
558
559 if (blob && (modop & LDAP_MOD_BVALUES)) {
560 j = 0;
561 if (mods[i]->mod_bvalues != NULL) {
562 for (; mods[i]->mod_bvalues[j] != NULL; j++);
563 }
564 mods[i]->mod_bvalues = SMB_REALLOC_ARRAY(mods[i]->mod_bvalues, struct berval *, j + 2);
565
566 if (mods[i]->mod_bvalues == NULL) {
567 smb_panic("smbldap_set_mod: out of memory!");
568 /* notreached. */
569 }
570
571 mods[i]->mod_bvalues[j] = SMB_MALLOC_P(struct berval);
572 SMB_ASSERT(mods[i]->mod_bvalues[j] != NULL);
573
574 mods[i]->mod_bvalues[j]->bv_val = (char *)memdup(blob->data, blob->length);
575 SMB_ASSERT(mods[i]->mod_bvalues[j]->bv_val != NULL);
576 mods[i]->mod_bvalues[j]->bv_len = blob->length;
577
578 mods[i]->mod_bvalues[j + 1] = NULL;
579 } else if (value != NULL) {
580 char *utf8_value = NULL;
581 size_t converted_size;
582
583 j = 0;
584 if (mods[i]->mod_values != NULL) {
585 for (; mods[i]->mod_values[j] != NULL; j++);
586 }
587 mods[i]->mod_values = SMB_REALLOC_ARRAY(mods[i]->mod_values, char *, j + 2);
588
589 if (mods[i]->mod_values == NULL) {
590 smb_panic("smbldap_set_mod: out of memory!");
591 /* notreached. */
592 }
593
594 if (!push_utf8_talloc(talloc_tos(), &utf8_value, value, &converted_size)) {
595 smb_panic("smbldap_set_mod: String conversion failure!");
596 /* notreached. */
597 }
598
599 mods[i]->mod_values[j] = SMB_STRDUP(utf8_value);
600 TALLOC_FREE(utf8_value);
601 SMB_ASSERT(mods[i]->mod_values[j] != NULL);
602
603 mods[i]->mod_values[j + 1] = NULL;
604 }
605 *modlist = mods;
606 }
607
608 void smbldap_set_mod (LDAPMod *** modlist, int modop, const char *attribute, const char *value)
609 {
610 smbldap_set_mod_internal(modlist, modop, attribute, value, NULL);
611 }
612
613 void smbldap_set_mod_blob(LDAPMod *** modlist, int modop, const char *attribute, const DATA_BLOB *value)
614 {
615 smbldap_set_mod_internal(modlist, modop | LDAP_MOD_BVALUES, attribute, NULL, value);
616 }
617
618 /**********************************************************************
619 Set attribute to newval in LDAP, regardless of what value the
620 attribute had in LDAP before.
621 *********************************************************************/
622
623 static void smbldap_make_mod_internal(LDAP *ldap_struct, LDAPMessage *existing,
624 LDAPMod ***mods,
625 const char *attribute, int op,
626 const char *newval,
627 const DATA_BLOB *newblob)
628 {
629 char oldval[2048]; /* current largest allowed value is mungeddial */
630 bool existed;
631 DATA_BLOB oldblob = data_blob_null;
632
633 if (attribute == NULL) {
634 /* This can actually happen for ldapsam_compat where we for
635 * example don't have a password history */
636 return;
637 }
638
639 if (existing != NULL) {
640 if (op & LDAP_MOD_BVALUES) {
641 existed = smbldap_talloc_single_blob(talloc_tos(), ldap_struct, existing, attribute, &oldblob);
642 } else {
643 existed = smbldap_get_single_attribute(ldap_struct, existing, attribute, oldval, sizeof(oldval));
644 }
645 } else {
646 existed = False;
647 *oldval = '\0';
648 }
649
650 if (existed) {
651 bool equal = false;
652 if (op & LDAP_MOD_BVALUES) {
653 equal = (newblob && (data_blob_cmp(&oldblob, newblob) == 0));
654 } else {
655 /* all of our string attributes are case insensitive */
656 equal = (newval && (StrCaseCmp(oldval, newval) == 0));
657 }
658
659 if (equal) {
660 /* Believe it or not, but LDAP will deny a delete and
661 an add at the same time if the values are the
662 same... */
663 DEBUG(10,("smbldap_make_mod: attribute |%s| not changed.\n", attribute));
664 return;
665 }
666
667 /* There has been no value before, so don't delete it.
668 * Here's a possible race: We might end up with
669 * duplicate attributes */
670 /* By deleting exactly the value we found in the entry this
671 * should be race-free in the sense that the LDAP-Server will
672 * deny the complete operation if somebody changed the
673 * attribute behind our back. */
674 /* This will also allow modifying single valued attributes
675 * in Novell NDS. In NDS you have to first remove attribute and then
676 * you could add new value */
677
678 if (op & LDAP_MOD_BVALUES) {
679 DEBUG(10,("smbldap_make_mod: deleting attribute |%s| blob\n", attribute));
680 smbldap_set_mod_blob(mods, LDAP_MOD_DELETE, attribute, &oldblob);
681 } else {
682 DEBUG(10,("smbldap_make_mod: deleting attribute |%s| values |%s|\n", attribute, oldval));
683 smbldap_set_mod(mods, LDAP_MOD_DELETE, attribute, oldval);
684 }
685 }
686
687 /* Regardless of the real operation (add or modify)
688 we add the new value here. We rely on deleting
689 the old value, should it exist. */
690
691 if (op & LDAP_MOD_BVALUES) {
692 if (newblob && newblob->length) {
693 DEBUG(10,("smbldap_make_mod: adding attribute |%s| blob\n", attribute));
694 smbldap_set_mod_blob(mods, LDAP_MOD_ADD, attribute, newblob);
695 }
696 } else {
697 if ((newval != NULL) && (strlen(newval) > 0)) {
698 DEBUG(10,("smbldap_make_mod: adding attribute |%s| value |%s|\n", attribute, newval));
699 smbldap_set_mod(mods, LDAP_MOD_ADD, attribute, newval);
700 }
701 }
702 }
703
704 void smbldap_make_mod(LDAP *ldap_struct, LDAPMessage *existing,
705 LDAPMod ***mods,
706 const char *attribute, const char *newval)
707 {
708 smbldap_make_mod_internal(ldap_struct, existing, mods, attribute,
709 0, newval, NULL);
710 }
711
712 void smbldap_make_mod_blob(LDAP *ldap_struct, LDAPMessage *existing,
713 LDAPMod ***mods,
714 const char *attribute, const DATA_BLOB *newblob)
715 {
716 smbldap_make_mod_internal(ldap_struct, existing, mods, attribute,
717 LDAP_MOD_BVALUES, NULL, newblob);
718 }
719
720 /**********************************************************************
721 Some varients of the LDAP rebind code do not pass in the third 'arg'
722 pointer to a void*, so we try and work around it by assuming that the
723 value of the 'LDAP *' pointer is the same as the one we had passed in
724 **********************************************************************/
725
726 struct smbldap_state_lookup {
727 LDAP *ld;
728 struct smbldap_state *smbldap_state;
729 struct smbldap_state_lookup *prev, *next;
730 };
731
732 static struct smbldap_state_lookup *smbldap_state_lookup_list;
733
734 static struct smbldap_state *smbldap_find_state(LDAP *ld)
735 {
736 struct smbldap_state_lookup *t;
737
738 for (t = smbldap_state_lookup_list; t; t = t->next) {
739 if (t->ld == ld) {
740 return t->smbldap_state;
741 }
742 }
743 return NULL;
744 }
745
746 static void smbldap_delete_state(struct smbldap_state *smbldap_state)
747 {
748 struct smbldap_state_lookup *t;
749
750 for (t = smbldap_state_lookup_list; t; t = t->next) {
751 if (t->smbldap_state == smbldap_state) {
752 DLIST_REMOVE(smbldap_state_lookup_list, t);
753 SAFE_FREE(t);
754 return;
755 }
756 }
757 }
758
759 static void smbldap_store_state(LDAP *ld, struct smbldap_state *smbldap_state)
760 {
761 struct smbldap_state *tmp_ldap_state;
762 struct smbldap_state_lookup *t;
763
764 if ((tmp_ldap_state = smbldap_find_state(ld))) {
765 SMB_ASSERT(tmp_ldap_state == smbldap_state);
766 return;
767 }
768
769 t = SMB_XMALLOC_P(struct smbldap_state_lookup);
770 ZERO_STRUCTP(t);
771
772 DLIST_ADD_END(smbldap_state_lookup_list, t, struct smbldap_state_lookup *);
773 t->ld = ld;
774 t->smbldap_state = smbldap_state;
775 }
776
777 /********************************************************************
778 start TLS on an existing LDAP connection
779 *******************************************************************/
780
781 int smb_ldap_start_tls(LDAP *ldap_struct, int version)
782 {
783 #ifdef LDAP_OPT_X_TLS
784 int rc;
785 #endif
786
787 if (lp_ldap_ssl() != LDAP_SSL_START_TLS) {
788 return LDAP_SUCCESS;
789 }
790
791 #ifdef LDAP_OPT_X_TLS
792 if (version != LDAP_VERSION3) {
793 DEBUG(0, ("Need LDAPv3 for Start TLS\n"));
794 return LDAP_OPERATIONS_ERROR;
795 }
796
797 if ((rc = ldap_start_tls_s (ldap_struct, NULL, NULL)) != LDAP_SUCCESS) {
798 DEBUG(0,("Failed to issue the StartTLS instruction: %s\n",
799 ldap_err2string(rc)));
800 return rc;
801 }
802
803 DEBUG (3, ("StartTLS issued: using a TLS connection\n"));
804 return LDAP_SUCCESS;
805 #else
806 DEBUG(0,("StartTLS not supported by LDAP client libraries!\n"));
807 return LDAP_OPERATIONS_ERROR;
808 #endif
809 }
810
811 /********************************************************************
812 setup a connection to the LDAP server based on a uri
813 *******************************************************************/
814
815 static int smb_ldap_setup_conn(LDAP **ldap_struct, const char *uri)
816 {
817 int rc;
818
819 DEBUG(10, ("smb_ldap_setup_connection: %s\n", uri));
820
821 #ifdef HAVE_LDAP_INITIALIZE
822
823 rc = ldap_initialize(ldap_struct, uri);
824 if (rc) {
825 DEBUG(0, ("ldap_initialize: %s\n", ldap_err2string(rc)));
826 return rc;
827 }
828
829 if (lp_ldap_follow_referral() != Auto) {
830 rc = ldap_set_option(*ldap_struct, LDAP_OPT_REFERRALS,
831 lp_ldap_follow_referral() ? LDAP_OPT_ON : LDAP_OPT_OFF);
832 if (rc != LDAP_SUCCESS)
833 DEBUG(0, ("Failed to set LDAP_OPT_REFERRALS: %s\n",
834 ldap_err2string(rc)));
835 }
836
837 return LDAP_SUCCESS;
838 #else
839
840 /* Parse the string manually */
841
842 {
843 int port = 0;
844 fstring protocol;
845 fstring host;
846 SMB_ASSERT(sizeof(protocol)>10 && sizeof(host)>254);
847
848
849 /* skip leading "URL:" (if any) */
850 if ( strnequal( uri, "URL:", 4 ) ) {
851 uri += 4;
852 }
853
854 sscanf(uri, "%10[^:]://%254[^:/]:%d", protocol, host, &port);
855
856 if (port == 0) {
857 if (strequal(protocol, "ldap")) {
858 port = LDAP_PORT;
859 } else if (strequal(protocol, "ldaps")) {
860 port = LDAPS_PORT;
861 } else {
862 DEBUG(0, ("unrecognised protocol (%s)!\n", protocol));
863 }
864 }
865
866 if ((*ldap_struct = ldap_init(host, port)) == NULL) {
867 DEBUG(0, ("ldap_init failed !\n"));
868 return LDAP_OPERATIONS_ERROR;
869 }
870
871 if (strequal(protocol, "ldaps")) {
872 #ifdef LDAP_OPT_X_TLS
873 int tls = LDAP_OPT_X_TLS_HARD;
874 if (ldap_set_option (*ldap_struct, LDAP_OPT_X_TLS, &tls) != LDAP_SUCCESS)
875 {
876 DEBUG(0, ("Failed to setup a TLS session\n"));
877 }
878
879 DEBUG(3,("LDAPS option set...!\n"));
880 #else
881 DEBUG(0,("smbldap_open_connection: Secure connection not supported by LDAP client libraries!\n"));
882 return LDAP_OPERATIONS_ERROR;
883 #endif /* LDAP_OPT_X_TLS */
884 }
885 }
886 #endif /* HAVE_LDAP_INITIALIZE */
887
888 /* now set connection timeout */
889 #ifdef LDAP_X_OPT_CONNECT_TIMEOUT /* Netscape */
890 {
891 int ct = lp_ldap_connection_timeout()*1000;
892 rc = ldap_set_option(*ldap_struct, LDAP_X_OPT_CONNECT_TIMEOUT, &ct);
893 if (rc != LDAP_SUCCESS) {
894 DEBUG(0,("Failed to setup an ldap connection timeout %d: %s\n",
895 ct, ldap_err2string(rc)));
896 }
897 }
898 #elif defined (LDAP_OPT_NETWORK_TIMEOUT) /* OpenLDAP */
899 {
900 struct timeval ct;
901 ct.tv_usec = 0;
902 ct.tv_sec = lp_ldap_connection_timeout();
903 rc = ldap_set_option(*ldap_struct, LDAP_OPT_NETWORK_TIMEOUT, &ct);
904 if (rc != LDAP_SUCCESS) {
905 DEBUG(0,("Failed to setup an ldap connection timeout %d: %s\n",
906 (int)ct.tv_sec, ldap_err2string(rc)));
907 }
908 }
909 #endif
910
911 return LDAP_SUCCESS;
912 }
913
914 /********************************************************************
915 try to upgrade to Version 3 LDAP if not already, in either case return current
916 version
917 *******************************************************************/
918
919 static int smb_ldap_upgrade_conn(LDAP *ldap_struct, int *new_version)
920 {
921 int version;
922 int rc;
923
924 /* assume the worst */
925 *new_version = LDAP_VERSION2;
926
927 rc = ldap_get_option(ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
928 if (rc) {
929 return rc;
930 }
931
932 if (version == LDAP_VERSION3) {
933 *new_version = LDAP_VERSION3;
934 return LDAP_SUCCESS;
935 }
936
937 /* try upgrade */
938 version = LDAP_VERSION3;
939 rc = ldap_set_option (ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
940 if (rc) {
941 return rc;
942 }
943
944 *new_version = LDAP_VERSION3;
945 return LDAP_SUCCESS;
946 }
947
948 /*******************************************************************
949 open a connection to the ldap server (just until the bind)
950 ******************************************************************/
951
952 int smb_ldap_setup_full_conn(LDAP **ldap_struct, const char *uri)
953 {
954 int rc, version;
955
956 rc = smb_ldap_setup_conn(ldap_struct, uri);
957 if (rc) {
958 return rc;
959 }
960
961 rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
962 if (rc) {
963 return rc;
964 }
965
966 rc = smb_ldap_start_tls(*ldap_struct, version);
967 if (rc) {
968 return rc;
969 }
970
971 return LDAP_SUCCESS;
972 }
973
974 /*******************************************************************
975 open a connection to the ldap server.
976 ******************************************************************/
977 static int smbldap_open_connection (struct smbldap_state *ldap_state)
978
979 {
980 int rc = LDAP_SUCCESS;
981 int version;
982 int deref;
983 LDAP **ldap_struct = &ldap_state->ldap_struct;
984
985 rc = smb_ldap_setup_conn(ldap_struct, ldap_state->uri);
986 if (rc) {
987 return rc;
988 }
989
990 /* Store the LDAP pointer in a lookup list */
991
992 smbldap_store_state(*ldap_struct, ldap_state);
993
994 /* Upgrade to LDAPv3 if possible */
995
996 rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
997 if (rc) {
998 return rc;
999 }
1000
1001 /* Start TLS if required */
1002
1003 rc = smb_ldap_start_tls(*ldap_struct, version);
1004 if (rc) {
1005 return rc;
1006 }
1007
1008 /* Set alias dereferencing method */
1009 deref = lp_ldap_deref();
1010 if (deref != -1) {
1011 if (ldap_set_option (*ldap_struct, LDAP_OPT_DEREF, &deref) != LDAP_OPT_SUCCESS) {
1012 DEBUG(1,("smbldap_open_connection: Failed to set dereferencing method: %d\n", deref));
1013 } else {
1014 DEBUG(5,("Set dereferencing method: %d\n", deref));
1015 }
1016 }
1017
1018 DEBUG(2, ("smbldap_open_connection: connection opened\n"));
1019 return rc;
1020 }
1021
1022 /*******************************************************************
1023 a rebind function for authenticated referrals
1024 This version takes a void* that we can shove useful stuff in :-)
1025 ******************************************************************/
1026 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
1027 #else
1028 static int rebindproc_with_state (LDAP * ld, char **whop, char **credp,
1029 int *methodp, int freeit, void *arg)
1030 {
1031 struct smbldap_state *ldap_state = arg;
1032 struct timespec ts;
1033
1034 /** @TODO Should we be doing something to check what servers we rebind to?
1035 Could we get a referral to a machine that we don't want to give our
1036 username and password to? */
1037
1038 if (freeit) {
1039 SAFE_FREE(*whop);
1040 if (*credp) {
1041 memset(*credp, '\0', strlen(*credp));
1042 }
1043 SAFE_FREE(*credp);
1044 } else {
1045 DEBUG(5,("rebind_proc_with_state: Rebinding as \"%s\"\n",
1046 ldap_state->bind_dn?ldap_state->bind_dn:"[Anonymous bind]"));
1047
1048 if (ldap_state->anonymous) {
1049 *whop = NULL;
1050 *credp = NULL;
1051 } else {
1052 *whop = SMB_STRDUP(ldap_state->bind_dn);
1053 if (!*whop) {
1054 return LDAP_NO_MEMORY;
1055 }
1056 *credp = SMB_STRDUP(ldap_state->bind_secret);
1057 if (!*credp) {
1058 SAFE_FREE(*whop);
1059 return LDAP_NO_MEMORY;
1060 }
1061 }
1062 *methodp = LDAP_AUTH_SIMPLE;
1063 }
1064
1065 clock_gettime_mono(&ts);
1066 ldap_state->last_rebind = convert_timespec_to_timeval(ts);
1067
1068 return 0;
1069 }
1070 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1071
1072 /*******************************************************************
1073 a rebind function for authenticated referrals
1074 This version takes a void* that we can shove useful stuff in :-)
1075 and actually does the connection.
1076 ******************************************************************/
1077 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
1078 static int rebindproc_connect_with_state (LDAP *ldap_struct,
1079 LDAP_CONST char *url,
1080 ber_tag_t request,
1081 ber_int_t msgid, void *arg)
1082 {
1083 struct smbldap_state *ldap_state =
1084 (struct smbldap_state *)arg;
1085 int rc;
1086 struct timespec ts;
1087 int version;
1088
1089 DEBUG(5,("rebindproc_connect_with_state: Rebinding to %s as \"%s\"\n",
1090 url, ldap_state->bind_dn?ldap_state->bind_dn:"[Anonymous bind]"));
1091
1092 /* call START_TLS again (ldaps:// is handled by the OpenLDAP library
1093 * itself) before rebinding to another LDAP server to avoid to expose
1094 * our credentials. At least *try* to secure the connection - Guenther */
1095
1096 smb_ldap_upgrade_conn(ldap_struct, &version);
1097 smb_ldap_start_tls(ldap_struct, version);
1098
1099 /** @TODO Should we be doing something to check what servers we rebind to?
1100 Could we get a referral to a machine that we don't want to give our
1101 username and password to? */
1102
1103 rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
1104
1105 /* only set the last rebind timestamp when we did rebind after a
1106 * non-read LDAP operation. That way we avoid the replication sleep
1107 * after a simple redirected search operation - Guenther */
1108
1109 switch (request) {
1110
1111 case LDAP_REQ_MODIFY:
1112 case LDAP_REQ_ADD:
1113 case LDAP_REQ_DELETE:
1114 case LDAP_REQ_MODDN:
1115 case LDAP_REQ_EXTENDED:
1116 DEBUG(10,("rebindproc_connect_with_state: "
1117 "setting last_rebind timestamp "
1118 "(req: 0x%02x)\n", (unsigned int)request));
1119 clock_gettime_mono(&ts);
1120 ldap_state->last_rebind = convert_timespec_to_timeval(ts);
1121 break;
1122 default:
1123 ZERO_STRUCT(ldap_state->last_rebind);
1124 break;
1125 }
1126
1127 return rc;
1128 }
1129 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1130
1131 /*******************************************************************
1132 Add a rebind function for authenticated referrals
1133 ******************************************************************/
1134 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
1135 #else
1136 # if LDAP_SET_REBIND_PROC_ARGS == 2
1137 static int rebindproc (LDAP *ldap_struct, char **whop, char **credp,
1138 int *method, int freeit )
1139 {
1140 struct smbldap_state *ldap_state = smbldap_find_state(ldap_struct);
1141
1142 return rebindproc_with_state(ldap_struct, whop, credp,
1143 method, freeit, ldap_state);
1144 }
1145 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
1146 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1147
1148 /*******************************************************************
1149 a rebind function for authenticated referrals
1150 this also does the connection, but no void*.
1151 ******************************************************************/
1152 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
1153 # if LDAP_SET_REBIND_PROC_ARGS == 2
1154 static int rebindproc_connect (LDAP * ld, LDAP_CONST char *url, int request,
1155 ber_int_t msgid)
1156 {
1157 struct smbldap_state *ldap_state = smbldap_find_state(ld);
1158
1159 return rebindproc_connect_with_state(ld, url, (ber_tag_t)request, msgid,
1160 ldap_state);
1161 }
1162 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
1163 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1164
1165 /*******************************************************************
1166 connect to the ldap server under system privilege.
1167 ******************************************************************/
1168 static int smbldap_connect_system(struct smbldap_state *ldap_state)
1169 {
1170 LDAP *ldap_struct = ldap_state->ldap_struct;
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 rc = LDAP_INVALID_CREDENTIALS;
1182 goto done;
1183 }
1184 smbldap_set_creds(ldap_state, false, bind_dn, bind_secret);
1185 SAFE_FREE(bind_dn);
1186 memset(bind_secret, '\0', strlen(bind_secret));
1187 SAFE_FREE(bind_secret);
1188 }
1189
1190 /* removed the sasl_bind_s "EXTERNAL" stuff, as my testsuite
1191 (OpenLDAP) doesnt' seem to support it */
1192
1193 DEBUG(10,("ldap_connect_system: Binding to ldap server %s as \"%s\"\n",
1194 ldap_state->uri, ldap_state->bind_dn));
1195
1196 #ifdef HAVE_LDAP_SET_REBIND_PROC
1197 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
1198 # if LDAP_SET_REBIND_PROC_ARGS == 2
1199 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect);
1200 # endif
1201 # if LDAP_SET_REBIND_PROC_ARGS == 3
1202 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect_with_state, (void *)ldap_state);
1203 # endif
1204 #else /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1205 # if LDAP_SET_REBIND_PROC_ARGS == 2
1206 ldap_set_rebind_proc(ldap_struct, &rebindproc);
1207 # endif
1208 # if LDAP_SET_REBIND_PROC_ARGS == 3
1209 ldap_set_rebind_proc(ldap_struct, &rebindproc_with_state, (void *)ldap_state);
1210 # endif
1211 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
1212 #endif
1213
1214 rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
1215
1216 if (rc != LDAP_SUCCESS) {
1217 char *ld_error = NULL;
1218 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
1219 &ld_error);
1220 DEBUG(ldap_state->num_failures ? 2 : 0,
1221 ("failed to bind to server %s with dn=\"%s\" Error: %s\n\t%s\n",
1222 ldap_state->uri,
1223 ldap_state->bind_dn ? ldap_state->bind_dn : "[Anonymous bind]",
1224 ldap_err2string(rc),
1225 ld_error ? ld_error : "(unknown)"));
1226 SAFE_FREE(ld_error);
1227 ldap_state->num_failures++;
1228 goto done;
1229 }
1230
1231 ldap_state->num_failures = 0;
1232 ldap_state->paged_results = False;
1233
1234 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
1235
1236 if (smbldap_has_control(ldap_state->ldap_struct, ADS_PAGE_CTL_OID) && version == 3) {
1237 ldap_state->paged_results = True;
1238 }
1239
1240 DEBUG(3, ("ldap_connect_system: successful connection to the LDAP server\n"));
1241 DEBUGADD(10, ("ldap_connect_system: LDAP server %s support paged results\n",
1242 ldap_state->paged_results ? "does" : "does not"));
1243 done:
1244 if (rc != 0) {
1245 ldap_unbind(ldap_struct);
1246 ldap_state->ldap_struct = NULL;
1247 }
1248 return rc;
1249 }
1250
1251 static void smbldap_idle_fn(struct event_context *event_ctx,
1252 struct timed_event *te,
1253 struct timeval now_abs,
1254 void *private_data);
1255
1256 /**********************************************************************
1257 Connect to LDAP server (called before every ldap operation)
1258 *********************************************************************/
1259 static int smbldap_open(struct smbldap_state *ldap_state)
1260 {
1261 int rc, opt_rc;
1262 bool reopen = False;
1263 SMB_ASSERT(ldap_state);
1264
1265 if ((ldap_state->ldap_struct != NULL) && ((ldap_state->last_ping + SMBLDAP_DONT_PING_TIME) < time_mono(NULL))) {
1266
1267 #ifdef HAVE_UNIXSOCKET
1268 struct sockaddr_un addr;
1269 #else
1270 struct sockaddr addr;
1271 #endif
1272 socklen_t len = sizeof(addr);
1273 int sd;
1274
1275 opt_rc = ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_DESC, &sd);
1276 if (opt_rc == 0 && (getpeername(sd, (struct sockaddr *) &addr, &len)) < 0 )
1277 reopen = True;
1278
1279 #ifdef HAVE_UNIXSOCKET
1280 if (opt_rc == 0 && addr.sun_family == AF_UNIX)
1281 reopen = True;
1282 #endif
1283 if (reopen) {
1284 /* the other end has died. reopen. */
1285 ldap_unbind(ldap_state->ldap_struct);
1286 ldap_state->ldap_struct = NULL;
1287 ldap_state->last_ping = (time_t)0;
1288 } else {
1289 ldap_state->last_ping = time_mono(NULL);
1290 }
1291 }
1292
1293 if (ldap_state->ldap_struct != NULL) {
1294 DEBUG(11,("smbldap_open: already connected to the LDAP server\n"));
1295 return LDAP_SUCCESS;
1296 }
1297
1298 if ((rc = smbldap_open_connection(ldap_state))) {
1299 return rc;
1300 }
1301
1302 if ((rc = smbldap_connect_system(ldap_state))) {
1303 return rc;
1304 }
1305
1306
1307 ldap_state->last_ping = time_mono(NULL);
1308 ldap_state->pid = sys_getpid();
1309
1310 TALLOC_FREE(ldap_state->idle_event);
1311
1312 if (ldap_state->event_context != NULL) {
1313 ldap_state->idle_event = event_add_timed(
1314 ldap_state->event_context, ldap_state,
1315 timeval_current_ofs(SMBLDAP_IDLE_TIME, 0),
1316 smbldap_idle_fn, ldap_state);
1317 }
1318
1319 DEBUG(4,("The LDAP server is successfully connected\n"));
1320
1321 return LDAP_SUCCESS;
1322 }
1323
1324 /**********************************************************************
1325 Disconnect from LDAP server
1326 *********************************************************************/
1327 static NTSTATUS smbldap_close(struct smbldap_state *ldap_state)
1328 {
1329 if (!ldap_state)
1330 return NT_STATUS_INVALID_PARAMETER;
1331
1332 if (ldap_state->ldap_struct != NULL) {
1333 ldap_unbind(ldap_state->ldap_struct);
1334 ldap_state->ldap_struct = NULL;
1335 }
1336
1337 smbldap_delete_state(ldap_state);
1338
1339 TALLOC_FREE(ldap_state->idle_event);
1340
1341 DEBUG(5,("The connection to the LDAP server was closed\n"));
1342 /* maybe free the results here --metze */
1343
1344 return NT_STATUS_OK;
1345 }
1346
1347 static bool got_alarm;
1348
1349 static void (*old_handler)(int);
1350
1351 static void gotalarm_sig(int dummy)
1352 {
1353 got_alarm = True;
1354 }
1355
1356 static int another_ldap_try(struct smbldap_state *ldap_state, int *rc,
1357 int *attempts, time_t endtime)
1358 {
1359 time_t now = time_mono(NULL);
1360 int open_rc = LDAP_SERVER_DOWN;
1361
1362 if (*rc != LDAP_SERVER_DOWN)
1363 goto no_next;
1364
1365 if (now >= endtime) {
1366 smbldap_close(ldap_state);
1367 *rc = LDAP_TIMEOUT;
1368 goto no_next;
1369 }
1370
1371 if (*attempts == 0) {
1372 got_alarm = False;
1373 old_handler = CatchSignal(SIGALRM, gotalarm_sig);
1374 alarm(endtime - now);
1375
1376 if (ldap_state->pid != sys_getpid())
1377 smbldap_close(ldap_state);
1378 }
1379
1380 while (1) {
1381
1382 if (*attempts != 0)
1383 smb_msleep(1000);
1384
1385 *attempts += 1;
1386
1387 open_rc = smbldap_open(ldap_state);
1388
1389 if (open_rc == LDAP_SUCCESS) {
1390 ldap_state->last_use = now;
1391 return True;
1392 }
1393
1394 if (open_rc == LDAP_INSUFFICIENT_ACCESS) {
1395 /* The fact that we are non-root or any other
1396 * access-denied condition will not change in the next
1397 * round of trying */
1398 *rc = open_rc;
1399 break;
1400 }
1401
1402 if (got_alarm) {
1403 *rc = LDAP_TIMEOUT;
1404 break;
1405 }
1406
1407 if (open_rc != LDAP_SUCCESS) {
1408 DEBUG(1, ("Connection to LDAP server failed for the "
1409 "%d try!\n", *attempts));
1410 }
1411 }
1412
1413 no_next:
1414 CatchSignal(SIGALRM, old_handler);
1415 alarm(0);
1416 ldap_state->last_use = now;
1417 return False;
1418 }
1419
1420 /*********************************************************************
1421 ********************************************************************/
1422
1423 static int smbldap_search_ext(struct smbldap_state *ldap_state,
1424 const char *base, int scope, const char *filter,
1425 const char *attrs[], int attrsonly,
1426 LDAPControl **sctrls, LDAPControl **cctrls,
1427 int sizelimit, LDAPMessage **res)
1428 {
1429 int rc = LDAP_SERVER_DOWN;
1430 int attempts = 0;
1431 char *utf8_filter;
1432 time_t endtime = time_mono(NULL)+lp_ldap_timeout();
1433 struct timeval timeout;
1434 size_t converted_size;
1435
1436 SMB_ASSERT(ldap_state);
1437
1438 DEBUG(5,("smbldap_search_ext: base => [%s], filter => [%s], "
1439 "scope => [%d]\n", base, filter, scope));
1440
1441 if (ldap_state->last_rebind.tv_sec > 0) {
1442 struct timeval tval;
1443 struct timespec ts;
1444 int64_t tdiff = 0;
1445 int sleep_time = 0;
1446
1447 clock_gettime_mono(&ts);
1448 tval = convert_timespec_to_timeval(ts);
1449
1450 tdiff = usec_time_diff(&tval, &ldap_state->last_rebind);
1451 tdiff /= 1000; /* Convert to milliseconds. */
1452
1453 sleep_time = lp_ldap_replication_sleep()-(int)tdiff;
1454 sleep_time = MIN(sleep_time, MAX_LDAP_REPLICATION_SLEEP_TIME);
1455
1456 if (sleep_time > 0) {
1457 /* we wait for the LDAP replication */
1458 DEBUG(5,("smbldap_search_ext: waiting %d milliseconds "
1459 "for LDAP replication.\n",sleep_time));
1460 smb_msleep(sleep_time);
1461 DEBUG(5,("smbldap_search_ext: go on!\n"));
1462 }
1463 ZERO_STRUCT(ldap_state->last_rebind);
1464 }
1465
1466 if (!push_utf8_talloc(talloc_tos(), &utf8_filter, filter, &converted_size)) {
1467 return LDAP_NO_MEMORY;
1468 }
1469
1470 /* Setup timeout for the ldap_search_ext_s call - local and remote. */
1471 timeout.tv_sec = lp_ldap_timeout();
1472 timeout.tv_usec = 0;
1473
1474 /* Setup alarm timeout.... Do we need both of these ? JRA.
1475 * Yes, I think we do need both of these. The server timeout only
1476 * covers the case where the server's operation takes too long. It
1477 * does not cover the case where the request hangs on its way to the
1478 * server. The server side timeout is not strictly necessary, it's
1479 * just a bit more kind to the server. VL. */
1480
1481 got_alarm = 0;
1482 CatchSignal(SIGALRM, gotalarm_sig);
1483 alarm(lp_ldap_timeout());
1484 /* End setup timeout. */
1485
1486 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1487 rc = ldap_search_ext_s(ldap_state->ldap_struct, base, scope,
1488 utf8_filter,
1489 CONST_DISCARD(char **, attrs),
1490 attrsonly, sctrls, cctrls, &timeout,
1491 sizelimit, res);
1492 if (rc != LDAP_SUCCESS) {
1493 char *ld_error = NULL;
1494 int ld_errno;
1495
1496 ldap_get_option(ldap_state->ldap_struct,
1497 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1498
1499 ldap_get_option(ldap_state->ldap_struct,
1500 LDAP_OPT_ERROR_STRING, &ld_error);
1501 DEBUG(10, ("Failed search for base: %s, error: %d (%s) "
1502 "(%s)\n", base, ld_errno,
1503 ldap_err2string(rc),
1504 ld_error ? ld_error : "unknown"));
1505 SAFE_FREE(ld_error);
1506
1507 if (ld_errno == LDAP_SERVER_DOWN) {
1508 ldap_unbind(ldap_state->ldap_struct);
1509 ldap_state->ldap_struct = NULL;
1510 }
1511 }
1512 }
1513
1514 TALLOC_FREE(utf8_filter);
1515
1516 /* Teardown timeout. */
1517 CatchSignal(SIGALRM, SIG_IGN);
1518 alarm(0);
1519
1520 if (got_alarm != 0)
1521 return LDAP_TIMELIMIT_EXCEEDED;
1522
1523 return rc;
1524 }
1525
1526 int smbldap_search(struct smbldap_state *ldap_state,
1527 const char *base, int scope, const char *filter,
1528 const char *attrs[], int attrsonly,
1529 LDAPMessage **res)
1530 {
1531 return smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1532 attrsonly, NULL, NULL, LDAP_NO_LIMIT, res);
1533 }
1534
1535 int smbldap_search_paged(struct smbldap_state *ldap_state,
1536 const char *base, int scope, const char *filter,
1537 const char **attrs, int attrsonly, int pagesize,
1538 LDAPMessage **res, void **cookie)
1539 {
1540 LDAPControl pr;
1541 LDAPControl **rcontrols;
1542 LDAPControl *controls[2] = { NULL, NULL};
1543 BerElement *cookie_be = NULL;
1544 struct berval *cookie_bv = NULL;
1545 int tmp = 0, i, rc;
1546 bool critical = True;
1547
1548 *res = NULL;
1549
1550 DEBUG(3,("smbldap_search_paged: base => [%s], filter => [%s],"
1551 "scope => [%d], pagesize => [%d]\n",
1552 base, filter, scope, pagesize));
1553
1554 cookie_be = ber_alloc_t(LBER_USE_DER);
1555 if (cookie_be == NULL) {
1556 DEBUG(0,("smbldap_create_page_control: ber_alloc_t returns "
1557 "NULL\n"));
1558 return LDAP_NO_MEMORY;
1559 }
1560
1561 /* construct cookie */
1562 if (*cookie != NULL) {
1563 ber_printf(cookie_be, "{iO}", (ber_int_t) pagesize, *cookie);
1564 ber_bvfree((struct berval *)*cookie); /* don't need it from last time */
1565 *cookie = NULL;
1566 } else {
1567 ber_printf(cookie_be, "{io}", (ber_int_t) pagesize, "", 0);
1568 }
1569 ber_flatten(cookie_be, &cookie_bv);
1570
1571 pr.ldctl_oid = CONST_DISCARD(char *, ADS_PAGE_CTL_OID);
1572 pr.ldctl_iscritical = (char) critical;
1573 pr.ldctl_value.bv_len = cookie_bv->bv_len;
1574 pr.ldctl_value.bv_val = cookie_bv->bv_val;
1575
1576 controls[0] = &pr;
1577 controls[1] = NULL;
1578
1579 rc = smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1580 0, controls, NULL, LDAP_NO_LIMIT, res);
1581
1582 ber_free(cookie_be, 1);
1583 ber_bvfree(cookie_bv);
1584
1585 if (rc != 0) {
1586 DEBUG(3,("smbldap_search_paged: smbldap_search_ext(%s) "
1587 "failed with [%s]\n", filter, ldap_err2string(rc)));
1588 goto done;
1589 }
1590
1591 DEBUG(3,("smbldap_search_paged: search was successful\n"));
1592
1593 rc = ldap_parse_result(ldap_state->ldap_struct, *res, NULL, NULL,
1594 NULL, NULL, &rcontrols, 0);
1595 if (rc != 0) {
1596 DEBUG(3,("smbldap_search_paged: ldap_parse_result failed " \
1597 "with [%s]\n", ldap_err2string(rc)));
1598 goto done;
1599 }
1600
1601 if (rcontrols == NULL)
1602 goto done;
1603
1604 for (i=0; rcontrols[i]; i++) {
1605
1606 if (strcmp(ADS_PAGE_CTL_OID, rcontrols[i]->ldctl_oid) != 0)
1607 continue;
1608
1609 cookie_be = ber_init(&rcontrols[i]->ldctl_value);
1610 ber_scanf(cookie_be,"{iO}", &tmp, &cookie_bv);
1611 /* the berval is the cookie, but must be freed when it is all
1612 done */
1613 if (cookie_bv->bv_len)
1614 *cookie=ber_bvdup(cookie_bv);
1615 else
1616 *cookie=NULL;
1617 ber_bvfree(cookie_bv);
1618 ber_free(cookie_be, 1);
1619 break;
1620 }
1621 ldap_controls_free(rcontrols);
1622 done:
1623 return rc;
1624 }
1625
1626 int smbldap_modify(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1627 {
1628 int rc = LDAP_SERVER_DOWN;
1629 int attempts = 0;
1630 char *utf8_dn;
1631 time_t endtime = time_mono(NULL)+lp_ldap_timeout();
1632 size_t converted_size;
1633
1634 SMB_ASSERT(ldap_state);
1635
1636 DEBUG(5,("smbldap_modify: dn => [%s]\n", dn ));
1637
1638 if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
1639 return LDAP_NO_MEMORY;
1640 }
1641
1642 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1643 rc = ldap_modify_s(ldap_state->ldap_struct, utf8_dn, attrs);
1644 if (rc != LDAP_SUCCESS) {
1645 char *ld_error = NULL;
1646 int ld_errno;
1647
1648 ldap_get_option(ldap_state->ldap_struct,
1649 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1650
1651 ldap_get_option(ldap_state->ldap_struct,
1652 LDAP_OPT_ERROR_STRING, &ld_error);
1653 DEBUG(10, ("Failed to modify dn: %s, error: %d (%s) "
1654 "(%s)\n", dn, ld_errno,
1655 ldap_err2string(rc),
1656 ld_error ? ld_error : "unknown"));
1657 SAFE_FREE(ld_error);
1658
1659 if (ld_errno == LDAP_SERVER_DOWN) {
1660 ldap_unbind(ldap_state->ldap_struct);
1661 ldap_state->ldap_struct = NULL;
1662 }
1663 }
1664 }
1665
1666 TALLOC_FREE(utf8_dn);
1667 return rc;
1668 }
1669
1670 int smbldap_add(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1671 {
1672 int rc = LDAP_SERVER_DOWN;
1673 int attempts = 0;
1674 char *utf8_dn;
1675 time_t endtime = time_mono(NULL)+lp_ldap_timeout();
1676 size_t converted_size;
1677
1678 SMB_ASSERT(ldap_state);
1679
1680 DEBUG(5,("smbldap_add: dn => [%s]\n", dn ));
1681
1682 if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
1683 return LDAP_NO_MEMORY;
1684 }
1685
1686 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1687 rc = ldap_add_s(ldap_state->ldap_struct, utf8_dn, attrs);
1688 if (rc != LDAP_SUCCESS) {
1689 char *ld_error = NULL;
1690 int ld_errno;
1691
1692 ldap_get_option(ldap_state->ldap_struct,
1693 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1694
1695 ldap_get_option(ldap_state->ldap_struct,
1696 LDAP_OPT_ERROR_STRING, &ld_error);
1697 DEBUG(10, ("Failed to add dn: %s, error: %d (%s) "
1698 "(%s)\n", dn, ld_errno,
1699 ldap_err2string(rc),
1700 ld_error ? ld_error : "unknown"));
1701 SAFE_FREE(ld_error);
1702
1703 if (ld_errno == LDAP_SERVER_DOWN) {
1704 ldap_unbind(ldap_state->ldap_struct);
1705 ldap_state->ldap_struct = NULL;
1706 }
1707 }
1708 }
1709
1710 TALLOC_FREE(utf8_dn);
1711 return rc;
1712 }
1713
1714 int smbldap_delete(struct smbldap_state *ldap_state, const char *dn)
1715 {
1716 int rc = LDAP_SERVER_DOWN;
1717 int attempts = 0;
1718 char *utf8_dn;
1719 time_t endtime = time_mono(NULL)+lp_ldap_timeout();
1720 size_t converted_size;
1721
1722 SMB_ASSERT(ldap_state);
1723
1724 DEBUG(5,("smbldap_delete: dn => [%s]\n", dn ));
1725
1726 if (!push_utf8_talloc(talloc_tos(), &utf8_dn, dn, &converted_size)) {
1727 return LDAP_NO_MEMORY;
1728 }
1729
1730 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1731 rc = ldap_delete_s(ldap_state->ldap_struct, utf8_dn);
1732 if (rc != LDAP_SUCCESS) {
1733 char *ld_error = NULL;
1734 int ld_errno;
1735
1736 ldap_get_option(ldap_state->ldap_struct,
1737 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1738
1739 ldap_get_option(ldap_state->ldap_struct,
1740 LDAP_OPT_ERROR_STRING, &ld_error);
1741 DEBUG(10, ("Failed to delete dn: %s, error: %d (%s) "
1742 "(%s)\n", dn, ld_errno,
1743 ldap_err2string(rc),
1744 ld_error ? ld_error : "unknown"));
1745 SAFE_FREE(ld_error);
1746
1747 if (ld_errno == LDAP_SERVER_DOWN) {
1748 ldap_unbind(ldap_state->ldap_struct);
1749 ldap_state->ldap_struct = NULL;
1750 }
1751 }
1752 }
1753
1754 TALLOC_FREE(utf8_dn);
1755 return rc;
1756 }
1757
1758 int smbldap_extended_operation(struct smbldap_state *ldap_state,
1759 LDAP_CONST char *reqoid, struct berval *reqdata,
1760 LDAPControl **serverctrls, LDAPControl **clientctrls,
1761 char **retoidp, struct berval **retdatap)
1762 {
1763 int rc = LDAP_SERVER_DOWN;
1764 int attempts = 0;
1765 time_t endtime = time_mono(NULL)+lp_ldap_timeout();
1766
1767 if (!ldap_state)
1768 return (-1);
1769
1770 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1771 rc = ldap_extended_operation_s(ldap_state->ldap_struct, reqoid,
1772 reqdata, serverctrls,
1773 clientctrls, retoidp, retdatap);
1774 if (rc != LDAP_SUCCESS) {
1775 char *ld_error = NULL;
1776 int ld_errno;
1777
1778 ldap_get_option(ldap_state->ldap_struct,
1779 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1780
1781 ldap_get_option(ldap_state->ldap_struct,
1782 LDAP_OPT_ERROR_STRING, &ld_error);
1783 DEBUG(10, ("Extended operation failed with error: "
1784 "%d (%s) (%s)\n", ld_errno,
1785 ldap_err2string(rc),
1786 ld_error ? ld_error : "unknown"));
1787 SAFE_FREE(ld_error);
1788
1789 if (ld_errno == LDAP_SERVER_DOWN) {
1790 ldap_unbind(ldap_state->ldap_struct);
1791 ldap_state->ldap_struct = NULL;
1792 }
1793 }
1794 }
1795
1796 return rc;
1797 }
1798
1799 /*******************************************************************
1800 run the search by name.
1801 ******************************************************************/
1802 int smbldap_search_suffix (struct smbldap_state *ldap_state,
1803 const char *filter, const char **search_attr,
1804 LDAPMessage ** result)
1805 {
1806 return smbldap_search(ldap_state, lp_ldap_suffix(), LDAP_SCOPE_SUBTREE,
1807 filter, search_attr, 0, result);
1808 }
1809
1810 static void smbldap_idle_fn(struct event_context *event_ctx,
1811 struct timed_event *te,
1812 struct timeval now_abs,
1813 void *private_data)
1814 {
1815 struct smbldap_state *state = (struct smbldap_state *)private_data;
1816
1817 TALLOC_FREE(state->idle_event);
1818
1819 if (state->ldap_struct == NULL) {
1820 DEBUG(10,("ldap connection not connected...\n"));
1821 return;
1822 }
1823
1824 if ((state->last_use+SMBLDAP_IDLE_TIME) > time_mono(NULL)) {
1825 DEBUG(10,("ldap connection not idle...\n"));
1826
1827 /* this needs to be made monotonic clock aware inside tevent: */
1828 state->idle_event = event_add_timed(
1829 event_ctx, state,
1830 timeval_add(&now_abs, SMBLDAP_IDLE_TIME, 0),
1831 smbldap_idle_fn,
1832 private_data);
1833 return;
1834 }
1835
1836 DEBUG(7,("ldap connection idle...closing connection\n"));
1837 smbldap_close(state);
1838 }
1839
1840 /**********************************************************************
1841 Housekeeping
1842 *********************************************************************/
1843
1844 void smbldap_free_struct(struct smbldap_state **ldap_state)
1845 {
1846 smbldap_close(*ldap_state);
1847
1848 if ((*ldap_state)->bind_secret) {
1849 memset((*ldap_state)->bind_secret, '\0', strlen((*ldap_state)->bind_secret));
1850 }
1851
1852 SAFE_FREE((*ldap_state)->bind_dn);
1853 SAFE_FREE((*ldap_state)->bind_secret);
1854
1855 TALLOC_FREE(*ldap_state);
1856
1857 /* No need to free any further, as it is talloc()ed */
1858 }
1859
1860 static int smbldap_state_destructor(struct smbldap_state *state)
1861 {
1862 smbldap_free_struct(&state);
1863 return 0;
1864 }
1865
1866
1867 /**********************************************************************
1868 Intitalise the 'general' ldap structures, on which ldap operations may be conducted
1869 *********************************************************************/
1870
1871 NTSTATUS smbldap_init(TALLOC_CTX *mem_ctx, struct event_context *event_ctx,
1872 const char *location,
1873 struct smbldap_state **smbldap_state)
1874 {
1875 *smbldap_state = TALLOC_ZERO_P(mem_ctx, struct smbldap_state);
1876 if (!*smbldap_state) {
1877 DEBUG(0, ("talloc() failed for ldapsam private_data!\n"));
1878 return NT_STATUS_NO_MEMORY;
1879 }
1880
1881 if (location) {
1882 (*smbldap_state)->uri = talloc_strdup(mem_ctx, location);
1883 } else {
1884 (*smbldap_state)->uri = "ldap://localhost";
1885 }
1886
1887 (*smbldap_state)->event_context = event_ctx;
1888
1889 talloc_set_destructor(*smbldap_state, smbldap_state_destructor);
1890 return NT_STATUS_OK;
1891 }
1892
1893 char *smbldap_talloc_dn(TALLOC_CTX *mem_ctx, LDAP *ld,
1894 LDAPMessage *entry)
1895 {
1896 char *utf8_dn, *unix_dn;
1897 size_t converted_size;
1898
1899 utf8_dn = ldap_get_dn(ld, entry);
1900 if (!utf8_dn) {
1901 DEBUG (5, ("smbldap_talloc_dn: ldap_get_dn failed\n"));
1902 return NULL;
1903 }
1904 if (!pull_utf8_talloc(mem_ctx, &unix_dn, utf8_dn, &converted_size)) {
1905 DEBUG (0, ("smbldap_talloc_dn: String conversion failure utf8 "
1906 "[%s]\n", utf8_dn));
1907 return NULL;
1908 }
1909 ldap_memfree(utf8_dn);
1910 return unix_dn;
1911 }
1912
1913 /*******************************************************************
1914 Check if root-dse has a certain Control or Extension
1915 ********************************************************************/
1916
1917 static bool smbldap_check_root_dse(LDAP *ld, const char **attrs, const char *value)
1918 {
1919 LDAPMessage *msg = NULL;
1920 LDAPMessage *entry = NULL;
1921 char **values = NULL;
1922 int rc, num_result, num_values, i;
1923 bool result = False;
1924
1925 if (!attrs[0]) {
1926 DEBUG(3,("smbldap_check_root_dse: nothing to look for\n"));
1927 return False;
1928 }
1929
1930 if (!strequal(attrs[0], "supportedExtension") &&
1931 !strequal(attrs[0], "supportedControl") &&
1932 !strequal(attrs[0], "namingContexts")) {
1933 DEBUG(3,("smbldap_check_root_dse: no idea what to query root-dse for: %s ?\n", attrs[0]));
1934 return False;
1935 }
1936
1937 rc = ldap_search_s(ld, "", LDAP_SCOPE_BASE,
1938 "(objectclass=*)", CONST_DISCARD(char **, attrs), 0 , &msg);
1939
1940 if (rc != LDAP_SUCCESS) {
1941 DEBUG(3,("smbldap_check_root_dse: Could not search rootDSE\n"));
1942 return False;
1943 }
1944
1945 num_result = ldap_count_entries(ld, msg);
1946
1947 if (num_result != 1) {
1948 DEBUG(3,("smbldap_check_root_dse: Expected one rootDSE, got %d\n", num_result));
1949 goto done;
1950 }
1951
1952 entry = ldap_first_entry(ld, msg);
1953
1954 if (entry == NULL) {
1955 DEBUG(3,("smbldap_check_root_dse: Could not retrieve rootDSE\n"));
1956 goto done;
1957 }
1958
1959 values = ldap_get_values(ld, entry, attrs[0]);
1960
1961 if (values == NULL) {
1962 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not support any %s\n", attrs[0]));
1963 goto done;
1964 }
1965
1966 num_values = ldap_count_values(values);
1967
1968 if (num_values == 0) {
1969 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not have any %s\n", attrs[0]));
1970 goto done;
1971 }
1972
1973 for (i=0; i<num_values; i++) {
1974 if (strcmp(values[i], value) == 0)
1975 result = True;
1976 }
1977
1978
1979 done:
1980 if (values != NULL)
1981 ldap_value_free(values);
1982 if (msg != NULL)
1983 ldap_msgfree(msg);
1984
1985 return result;
1986
1987 }
1988
1989 /*******************************************************************
1990 Check if LDAP-Server supports a certain Control (OID in string format)
1991 ********************************************************************/
1992
1993 bool smbldap_has_control(LDAP *ld, const char *control)
1994 {
1995 const char *attrs[] = { "supportedControl", NULL };
1996 return smbldap_check_root_dse(ld, attrs, control);
1997 }
1998
1999 /*******************************************************************
2000 Check if LDAP-Server supports a certain Extension (OID in string format)
2001 ********************************************************************/
2002
2003 bool smbldap_has_extension(LDAP *ld, const char *extension)
2004 {
2005 const char *attrs[] = { "supportedExtension", NULL };
2006 return smbldap_check_root_dse(ld, attrs, extension);
2007 }
2008
2009 /*******************************************************************
2010 Check if LDAP-Server holds a given namingContext
2011 ********************************************************************/
2012
2013 bool smbldap_has_naming_context(LDAP *ld, const char *naming_context)
2014 {
2015 const char *attrs[] = { "namingContexts", NULL };
2016 return smbldap_check_root_dse(ld, attrs, naming_context);
2017 }
2018
2019 bool smbldap_set_creds(struct smbldap_state *ldap_state, bool anon, const char *dn, const char *secret)
2020 {
2021 ldap_state->anonymous = anon;
2022
2023 /* free any previously set credential */
2024
2025 SAFE_FREE(ldap_state->bind_dn);
2026 if (ldap_state->bind_secret) {
2027 /* make sure secrets are zeroed out of memory */
2028 memset(ldap_state->bind_secret, '\0', strlen(ldap_state->bind_secret));
2029 SAFE_FREE(ldap_state->bind_secret);
2030 }
2031
2032 if ( ! anon) {
2033 ldap_state->bind_dn = SMB_STRDUP(dn);
2034 ldap_state->bind_secret = SMB_STRDUP(secret);
2035 }
2036
2037 return True;
2038 }
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