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r11876: When we are using START_TLS to secure the LDAP connection, we *have* to
[Samba/nascimento.git] / source3 / lib / smbldap.c
bloba3ebe72df219dcf286508a9ae942d76ddf3eeaa5
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 2 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, write to the Free Software
22 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23
24 */
25
26 #include "includes.h"
27 #include "smbldap.h"
28
29 #ifndef LDAP_OPT_SUCCESS
30 #define LDAP_OPT_SUCCESS 0
31 #endif
32
33 /* Try not to hit the up or down server forever */
34
35 #define SMBLDAP_DONT_PING_TIME 10 /* ping only all 10 seconds */
36 #define SMBLDAP_NUM_RETRIES 8 /* retry only 8 times */
37
38 #define SMBLDAP_IDLE_TIME 150 /* After 2.5 minutes disconnect */
39
40
41 /* attributes used by Samba 2.2 */
42
43 ATTRIB_MAP_ENTRY attrib_map_v22[] = {
44 { LDAP_ATTR_UID, "uid" },
45 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
46 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
47 { LDAP_ATTR_UNIX_HOME, "homeDirectory" },
48 { LDAP_ATTR_PWD_LAST_SET, "pwdLastSet" },
49 { LDAP_ATTR_PWD_CAN_CHANGE, "pwdCanChange" },
50 { LDAP_ATTR_PWD_MUST_CHANGE, "pwdMustChange" },
51 { LDAP_ATTR_LOGON_TIME, "logonTime" },
52 { LDAP_ATTR_LOGOFF_TIME, "logoffTime" },
53 { LDAP_ATTR_KICKOFF_TIME, "kickoffTime" },
54 { LDAP_ATTR_CN, "cn" },
55 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
56 { LDAP_ATTR_HOME_PATH, "smbHome" },
57 { LDAP_ATTR_HOME_DRIVE, "homeDrive" },
58 { LDAP_ATTR_LOGON_SCRIPT, "scriptPath" },
59 { LDAP_ATTR_PROFILE_PATH, "profilePath" },
60 { LDAP_ATTR_DESC, "description" },
61 { LDAP_ATTR_USER_WKS, "userWorkstations"},
62 { LDAP_ATTR_USER_RID, "rid" },
63 { LDAP_ATTR_PRIMARY_GROUP_RID, "primaryGroupID"},
64 { LDAP_ATTR_LMPW, "lmPassword" },
65 { LDAP_ATTR_NTPW, "ntPassword" },
66 { LDAP_ATTR_DOMAIN, "domain" },
67 { LDAP_ATTR_OBJCLASS, "objectClass" },
68 { LDAP_ATTR_ACB_INFO, "acctFlags" },
69 { LDAP_ATTR_MOD_TIMESTAMP, "modifyTimestamp" },
70 { LDAP_ATTR_LIST_END, NULL }
71 };
72
73 ATTRIB_MAP_ENTRY attrib_map_to_delete_v22[] = {
74 { LDAP_ATTR_PWD_LAST_SET, "pwdLastSet" },
75 { LDAP_ATTR_PWD_CAN_CHANGE, "pwdCanChange" },
76 { LDAP_ATTR_PWD_MUST_CHANGE, "pwdMustChange" },
77 { LDAP_ATTR_LOGON_TIME, "logonTime" },
78 { LDAP_ATTR_LOGOFF_TIME, "logoffTime" },
79 { LDAP_ATTR_KICKOFF_TIME, "kickoffTime" },
80 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
81 { LDAP_ATTR_HOME_PATH, "smbHome" },
82 { LDAP_ATTR_HOME_DRIVE, "homeDrives" },
83 { LDAP_ATTR_LOGON_SCRIPT, "scriptPath" },
84 { LDAP_ATTR_PROFILE_PATH, "profilePath" },
85 { LDAP_ATTR_USER_WKS, "userWorkstations"},
86 { LDAP_ATTR_USER_RID, "rid" },
87 { LDAP_ATTR_PRIMARY_GROUP_RID, "primaryGroupID"},
88 { LDAP_ATTR_LMPW, "lmPassword" },
89 { LDAP_ATTR_NTPW, "ntPassword" },
90 { LDAP_ATTR_DOMAIN, "domain" },
91 { LDAP_ATTR_ACB_INFO, "acctFlags" },
92 { LDAP_ATTR_LIST_END, NULL }
93 };
94
95 /* attributes used by Samba 3.0's sambaSamAccount */
96
97 ATTRIB_MAP_ENTRY attrib_map_v30[] = {
98 { LDAP_ATTR_UID, "uid" },
99 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
100 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
101 { LDAP_ATTR_UNIX_HOME, "homeDirectory" },
102 { LDAP_ATTR_PWD_LAST_SET, "sambaPwdLastSet" },
103 { LDAP_ATTR_PWD_CAN_CHANGE, "sambaPwdCanChange" },
104 { LDAP_ATTR_PWD_MUST_CHANGE, "sambaPwdMustChange" },
105 { LDAP_ATTR_LOGON_TIME, "sambaLogonTime" },
106 { LDAP_ATTR_LOGOFF_TIME, "sambaLogoffTime" },
107 { LDAP_ATTR_KICKOFF_TIME, "sambaKickoffTime" },
108 { LDAP_ATTR_CN, "cn" },
109 { LDAP_ATTR_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_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( 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 = SMB_MALLOC_ARRAY( 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] = SMB_STRDUP( table[i].name );
251 i++;
252 }
253 names[i] = NULL;
254
255 return names;
256 }
257
258 /*********************************************************************
259 Cleanup
260 ********************************************************************/
261
262 void free_attr_list( const char **list )
263 {
264 int i = 0;
265
266 if ( !list )
267 return;
268
269 while ( list[i] ) {
270 /* SAFE_FREE generates a warning here that can't be gotten rid
271 * of with CONST_DISCARD */
272 if (list[i] != NULL) {
273 free(CONST_DISCARD(char *, list[i]));
274 }
275 i+=1;
276 }
277
278 SAFE_FREE( list );
279 }
280
281 /*******************************************************************
282 Search an attribute and return the first value found.
283 ******************************************************************/
284
285 BOOL smbldap_get_single_attribute (LDAP * ldap_struct, LDAPMessage * entry,
286 const char *attribute, char *value,
287 int max_len)
288 {
289 char **values;
290
291 if ( !attribute )
292 return False;
293
294 value[0] = '\0';
295
296 if ((values = ldap_get_values (ldap_struct, entry, attribute)) == NULL) {
297 DEBUG (10, ("smbldap_get_single_attribute: [%s] = [<does not exist>]\n", attribute));
298
299 return False;
300 }
301
302 if (convert_string(CH_UTF8, CH_UNIX,values[0], -1, value, max_len, False) == (size_t)-1) {
303 DEBUG(1, ("smbldap_get_single_attribute: string conversion of [%s] = [%s] failed!\n",
304 attribute, values[0]));
305 ldap_value_free(values);
306 return False;
307 }
308
309 ldap_value_free(values);
310 #ifdef DEBUG_PASSWORDS
311 DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n", attribute, value));
312 #endif
313 return True;
314 }
315
316 BOOL smbldap_get_single_pstring (LDAP * ldap_struct, LDAPMessage * entry,
317 const char *attribute, pstring value)
318 {
319 return smbldap_get_single_attribute(ldap_struct, entry,
320 attribute, value,
321 sizeof(pstring));
322 }
323
324 /************************************************************************
325 Routine to manage the LDAPMod structure array
326 manage memory used by the array, by each struct, and values
327 ***********************************************************************/
328
329 void smbldap_set_mod (LDAPMod *** modlist, int modop, const char *attribute, const char *value)
330 {
331 LDAPMod **mods;
332 int i;
333 int j;
334
335 mods = *modlist;
336
337 /* sanity checks on the mod values */
338
339 if (attribute == NULL || *attribute == '\0') {
340 return;
341 }
342
343 #if 0 /* commented out after discussion with abartlet. Do not reenable.
344 left here so other do not re-add similar code --jerry */
345 if (value == NULL || *value == '\0')
346 return;
347 #endif
348
349 if (mods == NULL) {
350 mods = SMB_MALLOC_P(LDAPMod *);
351 if (mods == NULL) {
352 DEBUG(0, ("make_a_mod: out of memory!\n"));
353 return;
354 }
355 mods[0] = NULL;
356 }
357
358 for (i = 0; mods[i] != NULL; ++i) {
359 if (mods[i]->mod_op == modop && strequal(mods[i]->mod_type, attribute))
360 break;
361 }
362
363 if (mods[i] == NULL) {
364 mods = SMB_REALLOC_ARRAY (mods, LDAPMod *, i + 2);
365 if (mods == NULL) {
366 DEBUG(0, ("make_a_mod: out of memory!\n"));
367 return;
368 }
369 mods[i] = SMB_MALLOC_P(LDAPMod);
370 if (mods[i] == NULL) {
371 DEBUG(0, ("make_a_mod: out of memory!\n"));
372 return;
373 }
374 mods[i]->mod_op = modop;
375 mods[i]->mod_values = NULL;
376 mods[i]->mod_type = SMB_STRDUP(attribute);
377 mods[i + 1] = NULL;
378 }
379
380 if (value != NULL) {
381 char *utf8_value = NULL;
382
383 j = 0;
384 if (mods[i]->mod_values != NULL) {
385 for (; mods[i]->mod_values[j] != NULL; j++);
386 }
387 mods[i]->mod_values = SMB_REALLOC_ARRAY(mods[i]->mod_values, char *, j + 2);
388
389 if (mods[i]->mod_values == NULL) {
390 DEBUG (0, ("make_a_mod: Memory allocation failure!\n"));
391 return;
392 }
393
394 if (push_utf8_allocate(&utf8_value, value) == (size_t)-1) {
395 DEBUG (0, ("make_a_mod: String conversion failure!\n"));
396 return;
397 }
398
399 mods[i]->mod_values[j] = utf8_value;
400
401 mods[i]->mod_values[j + 1] = NULL;
402 }
403 *modlist = mods;
404 }
405
406 /**********************************************************************
407 Set attribute to newval in LDAP, regardless of what value the
408 attribute had in LDAP before.
409 *********************************************************************/
410
411 void smbldap_make_mod(LDAP *ldap_struct, LDAPMessage *existing,
412 LDAPMod ***mods,
413 const char *attribute, const char *newval)
414 {
415 char oldval[2048]; /* current largest allowed value is mungeddial */
416 BOOL existed;
417
418 if (attribute == NULL) {
419 /* This can actually happen for ldapsam_compat where we for
420 * example don't have a password history */
421 return;
422 }
423
424 if (existing != NULL) {
425 existed = smbldap_get_single_attribute(ldap_struct, existing, attribute, oldval, sizeof(oldval));
426 } else {
427 existed = False;
428 *oldval = '\0';
429 }
430
431 /* all of our string attributes are case insensitive */
432
433 if (existed && newval && (StrCaseCmp(oldval, newval) == 0)) {
434
435 /* Believe it or not, but LDAP will deny a delete and
436 an add at the same time if the values are the
437 same... */
438 DEBUG(10,("smbldap_make_mod: attribute |%s| not changed.\n", attribute));
439 return;
440 }
441
442 if (existed) {
443 /* There has been no value before, so don't delete it.
444 * Here's a possible race: We might end up with
445 * duplicate attributes */
446 /* By deleting exactly the value we found in the entry this
447 * should be race-free in the sense that the LDAP-Server will
448 * deny the complete operation if somebody changed the
449 * attribute behind our back. */
450 /* This will also allow modifying single valued attributes
451 * in Novell NDS. In NDS you have to first remove attribute and then
452 * you could add new value */
453
454 DEBUG(10,("smbldap_make_mod: deleting attribute |%s| values |%s|\n", attribute, oldval));
455 smbldap_set_mod(mods, LDAP_MOD_DELETE, attribute, oldval);
456 }
457
458 /* Regardless of the real operation (add or modify)
459 we add the new value here. We rely on deleting
460 the old value, should it exist. */
461
462 if ((newval != NULL) && (strlen(newval) > 0)) {
463 DEBUG(10,("smbldap_make_mod: adding attribute |%s| value |%s|\n", attribute, newval));
464 smbldap_set_mod(mods, LDAP_MOD_ADD, attribute, newval);
465 }
466 }
467
468 /**********************************************************************
469 Some varients of the LDAP rebind code do not pass in the third 'arg'
470 pointer to a void*, so we try and work around it by assuming that the
471 value of the 'LDAP *' pointer is the same as the one we had passed in
472 **********************************************************************/
473
474 struct smbldap_state_lookup {
475 LDAP *ld;
476 struct smbldap_state *smbldap_state;
477 struct smbldap_state_lookup *prev, *next;
478 };
479
480 static struct smbldap_state_lookup *smbldap_state_lookup_list;
481
482 static struct smbldap_state *smbldap_find_state(LDAP *ld)
483 {
484 struct smbldap_state_lookup *t;
485
486 for (t = smbldap_state_lookup_list; t; t = t->next) {
487 if (t->ld == ld) {
488 return t->smbldap_state;
489 }
490 }
491 return NULL;
492 }
493
494 static void smbldap_delete_state(struct smbldap_state *smbldap_state)
495 {
496 struct smbldap_state_lookup *t;
497
498 for (t = smbldap_state_lookup_list; t; t = t->next) {
499 if (t->smbldap_state == smbldap_state) {
500 DLIST_REMOVE(smbldap_state_lookup_list, t);
501 SAFE_FREE(t);
502 return;
503 }
504 }
505 }
506
507 static void smbldap_store_state(LDAP *ld, struct smbldap_state *smbldap_state)
508 {
509 struct smbldap_state *tmp_ldap_state;
510 struct smbldap_state_lookup *t;
511 struct smbldap_state_lookup *tmp;
512
513 if ((tmp_ldap_state = smbldap_find_state(ld))) {
514 SMB_ASSERT(tmp_ldap_state == smbldap_state);
515 return;
516 }
517
518 t = SMB_XMALLOC_P(struct smbldap_state_lookup);
519 ZERO_STRUCTP(t);
520
521 DLIST_ADD_END(smbldap_state_lookup_list, t, tmp);
522 t->ld = ld;
523 t->smbldap_state = smbldap_state;
524 }
525
526 /********************************************************************
527 start TLS on an existing LDAP connection
528 *******************************************************************/
529
530 int smb_ldap_start_tls(LDAP *ldap_struct, int version)
531 {
532 int rc;
533
534 if (lp_ldap_ssl() != LDAP_SSL_START_TLS) {
535 return LDAP_SUCCESS;
536 }
537
538 #ifdef LDAP_OPT_X_TLS
539 if (version != LDAP_VERSION3) {
540 DEBUG(0, ("Need LDAPv3 for Start TLS\n"));
541 return LDAP_OPERATIONS_ERROR;
542 }
543
544 if ((rc = ldap_start_tls_s (ldap_struct, NULL, NULL)) != LDAP_SUCCESS) {
545 DEBUG(0,("Failed to issue the StartTLS instruction: %s\n",
546 ldap_err2string(rc)));
547 return rc;
548 }
549
550 DEBUG (3, ("StartTLS issued: using a TLS connection\n"));
551 return LDAP_SUCCESS;
552 #else
553 DEBUG(0,("StartTLS not supported by LDAP client libraries!\n"));
554 return LDAP_OPERATIONS_ERROR;
555 #endif
556 }
557
558 /********************************************************************
559 setup a connection to the LDAP server based on a uri
560 *******************************************************************/
561
562 int smb_ldap_setup_conn(LDAP **ldap_struct, const char *uri)
563 {
564 int rc;
565
566 DEBUG(10, ("smb_ldap_setup_connection: %s\n", uri));
567
568 #ifdef HAVE_LDAP_INITIALIZE
569
570 rc = ldap_initialize(ldap_struct, uri);
571 if (rc) {
572 DEBUG(0, ("ldap_initialize: %s\n", ldap_err2string(rc)));
573 }
574
575 return rc;
576 #else
577
578 /* Parse the string manually */
579
580 {
581 int port = 0;
582 fstring protocol;
583 fstring host;
584 SMB_ASSERT(sizeof(protocol)>10 && sizeof(host)>254);
585
586
587 /* skip leading "URL:" (if any) */
588 if ( strnequal( uri, "URL:", 4 ) ) {
589 uri += 4;
590 }
591
592 sscanf(uri, "%10[^:]://%254[^:/]:%d", protocol, host, &port);
593
594 if (port == 0) {
595 if (strequal(protocol, "ldap")) {
596 port = LDAP_PORT;
597 } else if (strequal(protocol, "ldaps")) {
598 port = LDAPS_PORT;
599 } else {
600 DEBUG(0, ("unrecognised protocol (%s)!\n", protocol));
601 }
602 }
603
604 if ((*ldap_struct = ldap_init(host, port)) == NULL) {
605 DEBUG(0, ("ldap_init failed !\n"));
606 return LDAP_OPERATIONS_ERROR;
607 }
608
609 if (strequal(protocol, "ldaps")) {
610 #ifdef LDAP_OPT_X_TLS
611 int tls = LDAP_OPT_X_TLS_HARD;
612 if (ldap_set_option (*ldap_struct, LDAP_OPT_X_TLS, &tls) != LDAP_SUCCESS)
613 {
614 DEBUG(0, ("Failed to setup a TLS session\n"));
615 }
616
617 DEBUG(3,("LDAPS option set...!\n"));
618 #else
619 DEBUG(0,("smbldap_open_connection: Secure connection not supported by LDAP client libraries!\n"));
620 return LDAP_OPERATIONS_ERROR;
621 #endif /* LDAP_OPT_X_TLS */
622 }
623
624 }
625 #endif /* HAVE_LDAP_INITIALIZE */
626 return LDAP_SUCCESS;
627 }
628
629 /********************************************************************
630 try to upgrade to Version 3 LDAP if not already, in either case return current
631 version
632 *******************************************************************/
633
634 int smb_ldap_upgrade_conn(LDAP *ldap_struct, int *new_version)
635 {
636 int version;
637 int rc;
638
639 /* assume the worst */
640 *new_version = LDAP_VERSION2;
641
642 rc = ldap_get_option(ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
643 if (rc) {
644 return rc;
645 }
646
647 if (version == LDAP_VERSION3) {
648 *new_version = LDAP_VERSION3;
649 return LDAP_SUCCESS;
650 }
651
652 /* try upgrade */
653 version = LDAP_VERSION3;
654 rc = ldap_set_option (ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
655 if (rc) {
656 return rc;
657 }
658
659 *new_version = LDAP_VERSION3;
660 return LDAP_SUCCESS;
661 }
662
663 /*******************************************************************
664 open a connection to the ldap server (just until the bind)
665 ******************************************************************/
666
667 int smb_ldap_setup_full_conn(LDAP *ldap_struct, const char *uri)
668 {
669 int rc, version;
670
671 rc = smb_ldap_setup_conn(&ldap_struct, uri);
672 if (rc) {
673 return rc;
674 }
675
676 rc = smb_ldap_upgrade_conn(ldap_struct, &version);
677 if (rc) {
678 return rc;
679 }
680
681 rc = smb_ldap_start_tls(ldap_struct, version);
682 if (rc) {
683 return rc;
684 }
685
686 return LDAP_SUCCESS;
687 }
688
689 /*******************************************************************
690 open a connection to the ldap server.
691 ******************************************************************/
692 static int smbldap_open_connection (struct smbldap_state *ldap_state)
693
694 {
695 int rc = LDAP_SUCCESS;
696 int version;
697 LDAP **ldap_struct = &ldap_state->ldap_struct;
698
699 rc = smb_ldap_setup_conn(ldap_struct, ldap_state->uri);
700 if (rc) {
701 return rc;
702 }
703
704 /* Store the LDAP pointer in a lookup list */
705
706 smbldap_store_state(*ldap_struct, ldap_state);
707
708 /* Upgrade to LDAPv3 if possible */
709
710 rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
711 if (rc) {
712 return rc;
713 }
714
715 /* Start TLS if required */
716
717 rc = smb_ldap_start_tls(*ldap_struct, version);
718 if (rc) {
719 return rc;
720 }
721
722 DEBUG(2, ("smbldap_open_connection: connection opened\n"));
723 return rc;
724 }
725
726 /*******************************************************************
727 a rebind function for authenticated referrals
728 This version takes a void* that we can shove useful stuff in :-)
729 ******************************************************************/
730 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
731 #else
732 static int rebindproc_with_state (LDAP * ld, char **whop, char **credp,
733 int *methodp, int freeit, void *arg)
734 {
735 struct smbldap_state *ldap_state = arg;
736
737 /** @TODO Should we be doing something to check what servers we rebind to?
738 Could we get a referral to a machine that we don't want to give our
739 username and password to? */
740
741 if (freeit) {
742 SAFE_FREE(*whop);
743 memset(*credp, '\0', strlen(*credp));
744 SAFE_FREE(*credp);
745 } else {
746 DEBUG(5,("rebind_proc_with_state: Rebinding as \"%s\"\n",
747 ldap_state->bind_dn));
748
749 *whop = SMB_STRDUP(ldap_state->bind_dn);
750 if (!*whop) {
751 return LDAP_NO_MEMORY;
752 }
753 *credp = SMB_STRDUP(ldap_state->bind_secret);
754 if (!*credp) {
755 SAFE_FREE(*whop);
756 return LDAP_NO_MEMORY;
757 }
758 *methodp = LDAP_AUTH_SIMPLE;
759 }
760
761 GetTimeOfDay(&ldap_state->last_rebind);
762
763 return 0;
764 }
765 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
766
767 /*******************************************************************
768 a rebind function for authenticated referrals
769 This version takes a void* that we can shove useful stuff in :-)
770 and actually does the connection.
771 ******************************************************************/
772 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
773 static int rebindproc_connect_with_state (LDAP *ldap_struct,
774 LDAP_CONST char *url,
775 ber_tag_t request,
776 ber_int_t msgid, void *arg)
777 {
778 struct smbldap_state *ldap_state = arg;
779 int rc;
780 int version;
781
782 DEBUG(5,("rebindproc_connect_with_state: Rebinding to %s as \"%s\"\n",
783 url, ldap_state->bind_dn));
784
785 /* call START_TLS again (ldaps:// is handled by the OpenLDAP library
786 * itself) before rebinding to another LDAP server to avoid to expose
787 * our credentials. At least *try* to secure the connection - Guenther */
788
789 smb_ldap_upgrade_conn(ldap_struct, &version);
790 smb_ldap_start_tls(ldap_struct, version);
791
792 /** @TODO Should we be doing something to check what servers we rebind to?
793 Could we get a referral to a machine that we don't want to give our
794 username and password to? */
795
796 rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
797
798 GetTimeOfDay(&ldap_state->last_rebind);
799
800 return rc;
801 }
802 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
803
804 /*******************************************************************
805 Add a rebind function for authenticated referrals
806 ******************************************************************/
807 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
808 #else
809 # if LDAP_SET_REBIND_PROC_ARGS == 2
810 static int rebindproc (LDAP *ldap_struct, char **whop, char **credp,
811 int *method, int freeit )
812 {
813 struct smbldap_state *ldap_state = smbldap_find_state(ldap_struct);
814
815 return rebindproc_with_state(ldap_struct, whop, credp,
816 method, freeit, ldap_state);
817
818 }
819 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
820 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
821
822 /*******************************************************************
823 a rebind function for authenticated referrals
824 this also does the connection, but no void*.
825 ******************************************************************/
826 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
827 # if LDAP_SET_REBIND_PROC_ARGS == 2
828 static int rebindproc_connect (LDAP * ld, LDAP_CONST char *url, int request,
829 ber_int_t msgid)
830 {
831 struct smbldap_state *ldap_state = smbldap_find_state(ld);
832
833 return rebindproc_connect_with_state(ld, url, (ber_tag_t)request, msgid,
834 ldap_state);
835 }
836 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
837 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
838
839 /*******************************************************************
840 connect to the ldap server under system privilege.
841 ******************************************************************/
842 static int smbldap_connect_system(struct smbldap_state *ldap_state, LDAP * ldap_struct)
843 {
844 int rc;
845 char *ldap_dn;
846 char *ldap_secret;
847 int version;
848
849 /* get the password */
850 if (!fetch_ldap_pw(&ldap_dn, &ldap_secret)) {
851 DEBUG(0, ("ldap_connect_system: Failed to retrieve password from secrets.tdb\n"));
852 return LDAP_INVALID_CREDENTIALS;
853 }
854
855 ldap_state->bind_dn = ldap_dn;
856 ldap_state->bind_secret = ldap_secret;
857
858 /* removed the sasl_bind_s "EXTERNAL" stuff, as my testsuite
859 (OpenLDAP) doesnt' seem to support it */
860
861 DEBUG(10,("ldap_connect_system: Binding to ldap server %s as \"%s\"\n",
862 ldap_state->uri, ldap_dn));
863
864 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
865 # if LDAP_SET_REBIND_PROC_ARGS == 2
866 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect);
867 # endif
868 # if LDAP_SET_REBIND_PROC_ARGS == 3
869 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect_with_state, (void *)ldap_state);
870 # endif
871 #else /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
872 # if LDAP_SET_REBIND_PROC_ARGS == 2
873 ldap_set_rebind_proc(ldap_struct, &rebindproc);
874 # endif
875 # if LDAP_SET_REBIND_PROC_ARGS == 3
876 ldap_set_rebind_proc(ldap_struct, &rebindproc_with_state, (void *)ldap_state);
877 # endif
878 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
879
880 rc = ldap_simple_bind_s(ldap_struct, ldap_dn, ldap_secret);
881
882 if (rc != LDAP_SUCCESS) {
883 char *ld_error = NULL;
884 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
885 &ld_error);
886 DEBUG(ldap_state->num_failures ? 2 : 0,
887 ("failed to bind to server %s with dn=\"%s\" Error: %s\n\t%s\n",
888 ldap_state->uri,
889 ldap_dn ? ldap_dn : "(unknown)", ldap_err2string(rc),
890 ld_error ? ld_error : "(unknown)"));
891 SAFE_FREE(ld_error);
892 ldap_state->num_failures++;
893 return rc;
894 }
895
896 ldap_state->num_failures = 0;
897 ldap_state->paged_results = False;
898
899 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
900
901 if (smbldap_has_control(ldap_state, ADS_PAGE_CTL_OID) && version == 3) {
902 ldap_state->paged_results = True;
903 }
904
905 DEBUG(3, ("ldap_connect_system: succesful connection to the LDAP server\n"));
906 DEBUGADD(10, ("ldap_connect_system: LDAP server %s support paged results\n",
907 ldap_state->paged_results ? "does" : "does not"));
908 return rc;
909 }
910
911 /**********************************************************************
912 Connect to LDAP server (called before every ldap operation)
913 *********************************************************************/
914 static int smbldap_open(struct smbldap_state *ldap_state)
915 {
916 int rc, opt_rc;
917 BOOL reopen = False;
918 SMB_ASSERT(ldap_state);
919
920 #ifndef NO_LDAP_SECURITY
921 if (geteuid() != 0) {
922 DEBUG(0, ("smbldap_open: cannot access LDAP when not root..\n"));
923 return LDAP_INSUFFICIENT_ACCESS;
924 }
925 #endif
926
927 if ((ldap_state->ldap_struct != NULL) && ((ldap_state->last_ping + SMBLDAP_DONT_PING_TIME) < time(NULL))) {
928
929 struct sockaddr_un addr;
930 socklen_t len = sizeof(addr);
931 int sd;
932
933 opt_rc = ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_DESC, &sd);
934 if (opt_rc == 0 && (getpeername(sd, (struct sockaddr *) &addr, &len)) < 0 )
935 reopen = True;
936
937 #ifdef HAVE_UNIXSOCKET
938 if (opt_rc == 0 && addr.sun_family == AF_UNIX)
939 reopen = True;
940 #endif
941 if (reopen) {
942 /* the other end has died. reopen. */
943 ldap_unbind_ext(ldap_state->ldap_struct, NULL, NULL);
944 ldap_state->ldap_struct = NULL;
945 ldap_state->last_ping = (time_t)0;
946 } else {
947 ldap_state->last_ping = time(NULL);
948 }
949 }
950
951 if (ldap_state->ldap_struct != NULL) {
952 DEBUG(11,("smbldap_open: already connected to the LDAP server\n"));
953 return LDAP_SUCCESS;
954 }
955
956 if ((rc = smbldap_open_connection(ldap_state))) {
957 return rc;
958 }
959
960 if ((rc = smbldap_connect_system(ldap_state, ldap_state->ldap_struct))) {
961 ldap_unbind_ext(ldap_state->ldap_struct, NULL, NULL);
962 ldap_state->ldap_struct = NULL;
963 return rc;
964 }
965
966
967 ldap_state->last_ping = time(NULL);
968 ldap_state->pid = sys_getpid();
969 DEBUG(4,("The LDAP server is succesfully connected\n"));
970
971 return LDAP_SUCCESS;
972 }
973
974 /**********************************************************************
975 Disconnect from LDAP server
976 *********************************************************************/
977 static NTSTATUS smbldap_close(struct smbldap_state *ldap_state)
978 {
979 if (!ldap_state)
980 return NT_STATUS_INVALID_PARAMETER;
981
982 if (ldap_state->ldap_struct != NULL) {
983 ldap_unbind_ext(ldap_state->ldap_struct, NULL, NULL);
984 ldap_state->ldap_struct = NULL;
985 }
986
987 smbldap_delete_state(ldap_state);
988
989 DEBUG(5,("The connection to the LDAP server was closed\n"));
990 /* maybe free the results here --metze */
991
992
993
994 return NT_STATUS_OK;
995 }
996
997 static BOOL got_alarm;
998
999 static void (*old_handler)(int);
1000
1001 static void gotalarm_sig(int dummy)
1002 {
1003 got_alarm = True;
1004 }
1005
1006 static int another_ldap_try(struct smbldap_state *ldap_state, int *rc,
1007 int *attempts, time_t endtime)
1008 {
1009 time_t now = time(NULL);
1010 int open_rc = LDAP_SERVER_DOWN;
1011
1012 if (*rc != LDAP_SERVER_DOWN)
1013 goto no_next;
1014
1015 if (now >= endtime) {
1016 smbldap_close(ldap_state);
1017 *rc = LDAP_TIMEOUT;
1018 goto no_next;
1019 }
1020
1021 if (*attempts == 0) {
1022 got_alarm = False;
1023 old_handler = CatchSignal(SIGALRM, gotalarm_sig);
1024 alarm(endtime - now);
1025
1026 if (ldap_state->pid != sys_getpid())
1027 smbldap_close(ldap_state);
1028 }
1029
1030 while (1) {
1031
1032 if (*attempts != 0)
1033 smb_msleep(1000);
1034
1035 *attempts += 1;
1036
1037 open_rc = smbldap_open(ldap_state);
1038
1039 if (open_rc == LDAP_SUCCESS) {
1040 ldap_state->last_use = now;
1041 return True;
1042 }
1043
1044 if (got_alarm) {
1045 *rc = LDAP_TIMEOUT;
1046 break;
1047 }
1048
1049 if (open_rc != LDAP_SUCCESS) {
1050 DEBUG(1, ("Connection to LDAP server failed for the "
1051 "%d try!\n", *attempts));
1052 }
1053 }
1054
1055 no_next:
1056 CatchSignal(SIGALRM, old_handler);
1057 alarm(0);
1058 ldap_state->last_use = now;
1059 return False;
1060 }
1061
1062 /*********************************************************************
1063 ********************************************************************/
1064
1065 static int smbldap_search_ext(struct smbldap_state *ldap_state,
1066 const char *base, int scope, const char *filter,
1067 const char *attrs[], int attrsonly,
1068 LDAPControl **sctrls, LDAPControl **cctrls,
1069 int sizelimit, LDAPMessage **res)
1070 {
1071 int rc = LDAP_SERVER_DOWN;
1072 int attempts = 0;
1073 char *utf8_filter;
1074 time_t endtime = time(NULL)+lp_ldap_timeout();
1075 struct timeval timeout;
1076
1077 SMB_ASSERT(ldap_state);
1078
1079 DEBUG(5,("smbldap_search_ext: base => [%s], filter => [%s], "
1080 "scope => [%d]\n", base, filter, scope));
1081
1082 if (ldap_state->last_rebind.tv_sec > 0) {
1083 struct timeval tval;
1084 SMB_BIG_INT tdiff = 0;
1085 int sleep_time = 0;
1086
1087 ZERO_STRUCT(tval);
1088 GetTimeOfDay(&tval);
1089
1090 tdiff = usec_time_diff(&tval, &ldap_state->last_rebind);
1091 tdiff /= 1000; /* Convert to milliseconds. */
1092
1093 sleep_time = lp_ldap_replication_sleep()-(int)tdiff;
1094 sleep_time = MIN(sleep_time, MAX_LDAP_REPLICATION_SLEEP_TIME);
1095
1096 if (sleep_time > 0) {
1097 /* we wait for the LDAP replication */
1098 DEBUG(5,("smbldap_search_ext: waiting %d milliseconds "
1099 "for LDAP replication.\n",sleep_time));
1100 smb_msleep(sleep_time);
1101 DEBUG(5,("smbldap_search_ext: go on!\n"));
1102 }
1103 ZERO_STRUCT(ldap_state->last_rebind);
1104 }
1105
1106 if (push_utf8_allocate(&utf8_filter, filter) == (size_t)-1) {
1107 return LDAP_NO_MEMORY;
1108 }
1109
1110 /* Setup timeout for the ldap_search_ext_s call - local and remote. */
1111 timeout.tv_sec = lp_ldap_timeout();
1112 timeout.tv_usec = 0;
1113
1114 /* Setup alarm timeout.... Do we need both of these ? JRA.
1115 * Yes, I think we do need both of these. The server timeout only
1116 * covers the case where the server's operation takes too long. It
1117 * does not cover the case where the request hangs on its way to the
1118 * server. The server side timeout is not strictly necessary, it's
1119 * just a bit more kind to the server. VL. */
1120
1121 got_alarm = 0;
1122 CatchSignal(SIGALRM, SIGNAL_CAST gotalarm_sig);
1123 alarm(lp_ldap_timeout());
1124 /* End setup timeout. */
1125
1126 while (another_ldap_try(ldap_state, &rc, &attempts, endtime))
1127 rc = ldap_search_ext_s(ldap_state->ldap_struct, base, scope,
1128 utf8_filter,
1129 CONST_DISCARD(char **, attrs),
1130 attrsonly, sctrls, cctrls, &timeout,
1131 sizelimit, res);
1132
1133 SAFE_FREE(utf8_filter);
1134
1135 /* Teardown timeout. */
1136 CatchSignal(SIGALRM, SIGNAL_CAST SIG_IGN);
1137 alarm(0);
1138
1139 if (got_alarm != 0)
1140 return LDAP_TIMELIMIT_EXCEEDED;
1141
1142 return rc;
1143 }
1144
1145 int smbldap_search(struct smbldap_state *ldap_state,
1146 const char *base, int scope, const char *filter,
1147 const char *attrs[], int attrsonly,
1148 LDAPMessage **res)
1149 {
1150 return smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1151 attrsonly, NULL, NULL, LDAP_NO_LIMIT, res);
1152 }
1153
1154 int smbldap_search_paged(struct smbldap_state *ldap_state,
1155 const char *base, int scope, const char *filter,
1156 const char **attrs, int attrsonly, int pagesize,
1157 LDAPMessage **res, void **cookie)
1158 {
1159 LDAPControl pr;
1160 LDAPControl **rcontrols;
1161 LDAPControl *controls[2] = { NULL, NULL};
1162 BerElement *cookie_be = NULL;
1163 struct berval *cookie_bv = NULL;
1164 int tmp = 0, i, rc;
1165 BOOL critical = True;
1166
1167 *res = NULL;
1168
1169 DEBUG(3,("smbldap_search_paged: base => [%s], filter => [%s],"
1170 "scope => [%d], pagesize => [%d]\n",
1171 base, filter, scope, pagesize));
1172
1173 cookie_be = ber_alloc_t(LBER_USE_DER);
1174 if (cookie_be == NULL) {
1175 DEBUG(0,("smbldap_create_page_control: ber_alloc_t returns "
1176 "NULL\n"));
1177 return LDAP_NO_MEMORY;
1178 }
1179
1180 /* construct cookie */
1181 if (*cookie != NULL) {
1182 ber_printf(cookie_be, "{iO}", (ber_int_t) pagesize, *cookie);
1183 ber_bvfree(*cookie); /* don't need it from last time */
1184 *cookie = NULL;
1185 } else {
1186 ber_printf(cookie_be, "{io}", (ber_int_t) pagesize, "", 0);
1187 }
1188 ber_flatten(cookie_be, &cookie_bv);
1189
1190 pr.ldctl_oid = CONST_DISCARD(char *, ADS_PAGE_CTL_OID);
1191 pr.ldctl_iscritical = (char) critical;
1192 pr.ldctl_value.bv_len = cookie_bv->bv_len;
1193 pr.ldctl_value.bv_val = cookie_bv->bv_val;
1194
1195 controls[0] = &pr;
1196 controls[1] = NULL;
1197
1198 rc = smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1199 0, controls, NULL, LDAP_NO_LIMIT, res);
1200
1201 ber_free(cookie_be, 1);
1202 ber_bvfree(cookie_bv);
1203
1204 if (rc != 0) {
1205 DEBUG(3,("smbldap_search_paged: smbldap_search_ext(%s) "
1206 "failed with [%s]\n", filter, ldap_err2string(rc)));
1207 goto done;
1208 }
1209
1210 DEBUG(3,("smbldap_search_paged: search was successfull\n"));
1211
1212 rc = ldap_parse_result(ldap_state->ldap_struct, *res, NULL, NULL,
1213 NULL, NULL, &rcontrols, 0);
1214 if (rc != 0) {
1215 DEBUG(3,("smbldap_search_paged: ldap_parse_result failed " \
1216 "with [%s]\n", ldap_err2string(rc)));
1217 goto done;
1218 }
1219
1220 if (rcontrols == NULL)
1221 goto done;
1222
1223 for (i=0; rcontrols[i]; i++) {
1224
1225 if (strcmp(ADS_PAGE_CTL_OID, rcontrols[i]->ldctl_oid) != 0)
1226 continue;
1227
1228 cookie_be = ber_init(&rcontrols[i]->ldctl_value);
1229 ber_scanf(cookie_be,"{iO}", &tmp, &cookie_bv);
1230 /* the berval is the cookie, but must be freed when it is all
1231 done */
1232 if (cookie_bv->bv_len)
1233 *cookie=ber_bvdup(cookie_bv);
1234 else
1235 *cookie=NULL;
1236 ber_bvfree(cookie_bv);
1237 ber_free(cookie_be, 1);
1238 break;
1239 }
1240 ldap_controls_free(rcontrols);
1241 done:
1242 return rc;
1243 }
1244
1245 int smbldap_modify(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1246 {
1247 int rc = LDAP_SERVER_DOWN;
1248 int attempts = 0;
1249 char *utf8_dn;
1250 time_t endtime = time(NULL)+lp_ldap_timeout();
1251
1252 SMB_ASSERT(ldap_state);
1253
1254 DEBUG(5,("smbldap_modify: dn => [%s]\n", dn ));
1255
1256 if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1257 return LDAP_NO_MEMORY;
1258 }
1259
1260 while (another_ldap_try(ldap_state, &rc, &attempts, endtime))
1261 rc = ldap_modify_s(ldap_state->ldap_struct, utf8_dn, attrs);
1262
1263 SAFE_FREE(utf8_dn);
1264 return rc;
1265 }
1266
1267 int smbldap_add(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1268 {
1269 int rc = LDAP_SERVER_DOWN;
1270 int attempts = 0;
1271 char *utf8_dn;
1272 time_t endtime = time(NULL)+lp_ldap_timeout();
1273
1274 SMB_ASSERT(ldap_state);
1275
1276 DEBUG(5,("smbldap_add: dn => [%s]\n", dn ));
1277
1278 if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1279 return LDAP_NO_MEMORY;
1280 }
1281
1282 while (another_ldap_try(ldap_state, &rc, &attempts, endtime))
1283 rc = ldap_add_s(ldap_state->ldap_struct, utf8_dn, attrs);
1284
1285 SAFE_FREE(utf8_dn);
1286 return rc;
1287 }
1288
1289 int smbldap_delete(struct smbldap_state *ldap_state, const char *dn)
1290 {
1291 int rc = LDAP_SERVER_DOWN;
1292 int attempts = 0;
1293 char *utf8_dn;
1294 time_t endtime = time(NULL)+lp_ldap_timeout();
1295
1296 SMB_ASSERT(ldap_state);
1297
1298 DEBUG(5,("smbldap_delete: dn => [%s]\n", dn ));
1299
1300 if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1301 return LDAP_NO_MEMORY;
1302 }
1303
1304 while (another_ldap_try(ldap_state, &rc, &attempts, endtime))
1305 rc = ldap_delete_s(ldap_state->ldap_struct, utf8_dn);
1306
1307 SAFE_FREE(utf8_dn);
1308 return rc;
1309 }
1310
1311 int smbldap_extended_operation(struct smbldap_state *ldap_state,
1312 LDAP_CONST char *reqoid, struct berval *reqdata,
1313 LDAPControl **serverctrls, LDAPControl **clientctrls,
1314 char **retoidp, struct berval **retdatap)
1315 {
1316 int rc = LDAP_SERVER_DOWN;
1317 int attempts = 0;
1318 time_t endtime = time(NULL)+lp_ldap_timeout();
1319
1320 if (!ldap_state)
1321 return (-1);
1322
1323 while (another_ldap_try(ldap_state, &rc, &attempts, endtime))
1324 rc = ldap_extended_operation_s(ldap_state->ldap_struct, reqoid,
1325 reqdata, serverctrls,
1326 clientctrls, retoidp, retdatap);
1327 return rc;
1328 }
1329
1330 /*******************************************************************
1331 run the search by name.
1332 ******************************************************************/
1333 int smbldap_search_suffix (struct smbldap_state *ldap_state, const char *filter,
1334 const char **search_attr, LDAPMessage ** result)
1335 {
1336 int scope = LDAP_SCOPE_SUBTREE;
1337 int rc;
1338
1339 rc = smbldap_search(ldap_state, lp_ldap_suffix(), scope, filter, search_attr, 0, result);
1340
1341 if (rc != LDAP_SUCCESS) {
1342 char *ld_error = NULL;
1343 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
1344 &ld_error);
1345 DEBUG(0,("smbldap_search_suffix: Problem during the LDAP search: %s (%s)\n",
1346 ld_error?ld_error:"(unknown)", ldap_err2string (rc)));
1347 SAFE_FREE(ld_error);
1348 }
1349
1350 return rc;
1351 }
1352
1353 static void smbldap_idle_fn(void **data, time_t *interval, time_t now)
1354 {
1355 struct smbldap_state *state = (struct smbldap_state *)(*data);
1356
1357 if (state->ldap_struct == NULL) {
1358 DEBUG(10,("ldap connection not connected...\n"));
1359 return;
1360 }
1361
1362 if ((state->last_use+SMBLDAP_IDLE_TIME) > now) {
1363 DEBUG(10,("ldap connection not idle...\n"));
1364 return;
1365 }
1366
1367 DEBUG(7,("ldap connection idle...closing connection\n"));
1368 smbldap_close(state);
1369 }
1370
1371 /**********************************************************************
1372 Housekeeping
1373 *********************************************************************/
1374
1375 void smbldap_free_struct(struct smbldap_state **ldap_state)
1376 {
1377 smbldap_close(*ldap_state);
1378
1379 if ((*ldap_state)->bind_secret) {
1380 memset((*ldap_state)->bind_secret, '\0', strlen((*ldap_state)->bind_secret));
1381 }
1382
1383 SAFE_FREE((*ldap_state)->bind_dn);
1384 SAFE_FREE((*ldap_state)->bind_secret);
1385
1386 smb_unregister_idle_event((*ldap_state)->event_id);
1387
1388 *ldap_state = NULL;
1389
1390 /* No need to free any further, as it is talloc()ed */
1391 }
1392
1393
1394 /**********************************************************************
1395 Intitalise the 'general' ldap structures, on which ldap operations may be conducted
1396 *********************************************************************/
1397
1398 NTSTATUS smbldap_init(TALLOC_CTX *mem_ctx, const char *location, struct smbldap_state **smbldap_state)
1399 {
1400 *smbldap_state = TALLOC_ZERO_P(mem_ctx, struct smbldap_state);
1401 if (!*smbldap_state) {
1402 DEBUG(0, ("talloc() failed for ldapsam private_data!\n"));
1403 return NT_STATUS_NO_MEMORY;
1404 }
1405
1406 if (location) {
1407 (*smbldap_state)->uri = talloc_strdup(mem_ctx, location);
1408 } else {
1409 (*smbldap_state)->uri = "ldap://localhost";
1410 }
1411
1412 (*smbldap_state)->event_id =
1413 smb_register_idle_event(smbldap_idle_fn, (void *)(*smbldap_state),
1414 SMBLDAP_IDLE_TIME);
1415
1416 if ((*smbldap_state)->event_id == SMB_EVENT_ID_INVALID) {
1417 DEBUG(0,("Failed to register LDAP idle event!\n"));
1418 return NT_STATUS_INVALID_HANDLE;
1419 }
1420
1421 return NT_STATUS_OK;
1422 }
1423
1424 /*******************************************************************
1425 Return a copy of the DN for a LDAPMessage. Convert from utf8 to CH_UNIX.
1426 ********************************************************************/
1427
1428 char *smbldap_get_dn(LDAP *ld, LDAPMessage *entry)
1429 {
1430 char *utf8_dn, *unix_dn;
1431
1432 utf8_dn = ldap_get_dn(ld, entry);
1433 if (!utf8_dn) {
1434 DEBUG (5, ("smbldap_get_dn: ldap_get_dn failed\n"));
1435 return NULL;
1436 }
1437 if (pull_utf8_allocate(&unix_dn, utf8_dn) == (size_t)-1) {
1438 DEBUG (0, ("smbldap_get_dn: String conversion failure utf8 [%s]\n", utf8_dn));
1439 return NULL;
1440 }
1441 ldap_memfree(utf8_dn);
1442 return unix_dn;
1443 }
1444
1445 /*******************************************************************
1446 Check if root-dse has a certain Control or Extension
1447 ********************************************************************/
1448
1449 static BOOL smbldap_check_root_dse(struct smbldap_state *ldap_state, const char **attrs, const char *value)
1450 {
1451 LDAPMessage *msg = NULL;
1452 LDAPMessage *entry = NULL;
1453 char **values = NULL;
1454 int rc, num_result, num_values, i;
1455 BOOL result = False;
1456
1457 if (!attrs[0]) {
1458 DEBUG(3,("smbldap_check_root_dse: nothing to look for\n"));
1459 return False;
1460 }
1461
1462 if (!strequal(attrs[0], "supportedExtension") &&
1463 !strequal(attrs[0], "supportedControl") &&
1464 !strequal(attrs[0], "namingContexts")) {
1465 DEBUG(3,("smbldap_check_root_dse: no idea what to query root-dse for: %s ?\n", attrs[0]));
1466 return False;
1467 }
1468
1469 rc = ldap_search_s(ldap_state->ldap_struct, "", LDAP_SCOPE_BASE,
1470 "(objectclass=*)", CONST_DISCARD(char **, attrs), 0 , &msg);
1471
1472 if (rc != LDAP_SUCCESS) {
1473 DEBUG(3,("smbldap_check_root_dse: Could not search rootDSE\n"));
1474 return False;
1475 }
1476
1477 num_result = ldap_count_entries(ldap_state->ldap_struct, msg);
1478
1479 if (num_result != 1) {
1480 DEBUG(3,("smbldap_check_root_dse: Expected one rootDSE, got %d\n", num_result));
1481 goto done;
1482 }
1483
1484 entry = ldap_first_entry(ldap_state->ldap_struct, msg);
1485
1486 if (entry == NULL) {
1487 DEBUG(3,("smbldap_check_root_dse: Could not retrieve rootDSE\n"));
1488 goto done;
1489 }
1490
1491 values = ldap_get_values(ldap_state->ldap_struct, entry, attrs[0]);
1492
1493 if (values == NULL) {
1494 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not support any %s\n", attrs[0]));
1495 goto done;
1496 }
1497
1498 num_values = ldap_count_values(values);
1499
1500 if (num_values == 0) {
1501 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not have any %s\n", attrs[0]));
1502 goto done;
1503 }
1504
1505 for (i=0; i<num_values; i++) {
1506 if (strcmp(values[i], value) == 0)
1507 result = True;
1508 }
1509
1510
1511 done:
1512 if (values != NULL)
1513 ldap_value_free(values);
1514 if (msg != NULL)
1515 ldap_msgfree(msg);
1516
1517 return result;
1518
1519 }
1520
1521 /*******************************************************************
1522 Check if LDAP-Server supports a certain Control (OID in string format)
1523 ********************************************************************/
1524
1525 BOOL smbldap_has_control(struct smbldap_state *ldap_state, const char *control)
1526 {
1527 const char *attrs[] = { "supportedControl", NULL };
1528 return smbldap_check_root_dse(ldap_state, attrs, control);
1529 }
1530
1531 /*******************************************************************
1532 Check if LDAP-Server supports a certain Extension (OID in string format)
1533 ********************************************************************/
1534
1535 BOOL smbldap_has_extension(struct smbldap_state *ldap_state, const char *extension)
1536 {
1537 const char *attrs[] = { "supportedExtension", NULL };
1538 return smbldap_check_root_dse(ldap_state, attrs, extension);
1539 }
1540
1541 /*******************************************************************
1542 Check if LDAP-Server holds a given namingContext
1543 ********************************************************************/
1544
1545 BOOL smbldap_has_naming_context(struct smbldap_state *ldap_state, const char *naming_context)
1546 {
1547 const char *attrs[] = { "namingContexts", NULL };
1548 return smbldap_check_root_dse(ldap_state, attrs, naming_context);
1549 }