source: branches/samba-3.2.x/source/lib/smbldap.c@ 198

Last change on this file since 198 was 141, checked in by Paul Smedley, 17 years ago

Update trunk to 3.2.1
File size: 52.4 KB
Line 
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
28#ifndef LDAP_OPT_SUCCESS
29#define LDAP_OPT_SUCCESS 0
30#endif
31
32/* Try not to hit the up or down server forever */
33
34#define SMBLDAP_DONT_PING_TIME 10 /* ping only all 10 seconds */
35#define SMBLDAP_NUM_RETRIES 8 /* retry only 8 times */
36
37#define SMBLDAP_IDLE_TIME 150 /* After 2.5 minutes disconnect */
38
39
40/* attributes used by Samba 2.2 */
41
42ATTRIB_MAP_ENTRY attrib_map_v22[] = {
43 { LDAP_ATTR_UID, "uid" },
44 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
45 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
46 { LDAP_ATTR_UNIX_HOME, "homeDirectory" },
47 { LDAP_ATTR_PWD_LAST_SET, "pwdLastSet" },
48 { LDAP_ATTR_PWD_CAN_CHANGE, "pwdCanChange" },
49 { LDAP_ATTR_PWD_MUST_CHANGE, "pwdMustChange" },
50 { LDAP_ATTR_LOGON_TIME, "logonTime" },
51 { LDAP_ATTR_LOGOFF_TIME, "logoffTime" },
52 { LDAP_ATTR_KICKOFF_TIME, "kickoffTime" },
53 { LDAP_ATTR_CN, "cn" },
54 { LDAP_ATTR_SN, "sn" },
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
73ATTRIB_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
97ATTRIB_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_SN, "sn" },
110 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
111 { LDAP_ATTR_HOME_DRIVE, "sambaHomeDrive" },
112 { LDAP_ATTR_HOME_PATH, "sambaHomePath" },
113 { LDAP_ATTR_LOGON_SCRIPT, "sambaLogonScript" },
114 { LDAP_ATTR_PROFILE_PATH, "sambaProfilePath" },
115 { LDAP_ATTR_DESC, "description" },
116 { LDAP_ATTR_USER_WKS, "sambaUserWorkstations" },
117 { LDAP_ATTR_USER_SID, LDAP_ATTRIBUTE_SID },
118 { LDAP_ATTR_PRIMARY_GROUP_SID, "sambaPrimaryGroupSID" },
119 { LDAP_ATTR_LMPW, "sambaLMPassword" },
120 { LDAP_ATTR_NTPW, "sambaNTPassword" },
121 { LDAP_ATTR_DOMAIN, "sambaDomainName" },
122 { LDAP_ATTR_OBJCLASS, "objectClass" },
123 { LDAP_ATTR_ACB_INFO, "sambaAcctFlags" },
124 { LDAP_ATTR_MUNGED_DIAL, "sambaMungedDial" },
125 { LDAP_ATTR_BAD_PASSWORD_COUNT, "sambaBadPasswordCount" },
126 { LDAP_ATTR_BAD_PASSWORD_TIME, "sambaBadPasswordTime" },
127 { LDAP_ATTR_PWD_HISTORY, "sambaPasswordHistory" },
128 { LDAP_ATTR_MOD_TIMESTAMP, "modifyTimestamp" },
129 { LDAP_ATTR_LOGON_HOURS, "sambaLogonHours" },
130 { LDAP_ATTR_LIST_END, NULL }
131};
132
133ATTRIB_MAP_ENTRY attrib_map_to_delete_v30[] = {
134 { LDAP_ATTR_PWD_LAST_SET, "sambaPwdLastSet" },
135 { LDAP_ATTR_PWD_CAN_CHANGE, "sambaPwdCanChange" },
136 { LDAP_ATTR_PWD_MUST_CHANGE, "sambaPwdMustChange" },
137 { LDAP_ATTR_LOGON_TIME, "sambaLogonTime" },
138 { LDAP_ATTR_LOGOFF_TIME, "sambaLogoffTime" },
139 { LDAP_ATTR_KICKOFF_TIME, "sambaKickoffTime" },
140 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
141 { LDAP_ATTR_HOME_DRIVE, "sambaHomeDrive" },
142 { LDAP_ATTR_HOME_PATH, "sambaHomePath" },
143 { LDAP_ATTR_LOGON_SCRIPT, "sambaLogonScript" },
144 { LDAP_ATTR_PROFILE_PATH, "sambaProfilePath" },
145 { LDAP_ATTR_USER_WKS, "sambaUserWorkstations" },
146 { LDAP_ATTR_USER_SID, LDAP_ATTRIBUTE_SID },
147 { LDAP_ATTR_PRIMARY_GROUP_SID, "sambaPrimaryGroupSID" },
148 { LDAP_ATTR_LMPW, "sambaLMPassword" },
149 { LDAP_ATTR_NTPW, "sambaNTPassword" },
150 { LDAP_ATTR_DOMAIN, "sambaDomainName" },
151 { LDAP_ATTR_ACB_INFO, "sambaAcctFlags" },
152 { LDAP_ATTR_MUNGED_DIAL, "sambaMungedDial" },
153 { LDAP_ATTR_BAD_PASSWORD_COUNT, "sambaBadPasswordCount" },
154 { LDAP_ATTR_BAD_PASSWORD_TIME, "sambaBadPasswordTime" },
155 { LDAP_ATTR_PWD_HISTORY, "sambaPasswordHistory" },
156 { LDAP_ATTR_LOGON_HOURS, "sambaLogonHours" },
157 { LDAP_ATTR_LIST_END, NULL }
158};
159
160/* attributes used for allocating RIDs */
161
162ATTRIB_MAP_ENTRY dominfo_attr_list[] = {
163 { LDAP_ATTR_DOMAIN, "sambaDomainName" },
164 { LDAP_ATTR_NEXT_RID, "sambaNextRid" },
165 { LDAP_ATTR_NEXT_USERRID, "sambaNextUserRid" },
166 { LDAP_ATTR_NEXT_GROUPRID, "sambaNextGroupRid" },
167 { LDAP_ATTR_DOM_SID, LDAP_ATTRIBUTE_SID },
168 { LDAP_ATTR_ALGORITHMIC_RID_BASE,"sambaAlgorithmicRidBase"},
169 { LDAP_ATTR_OBJCLASS, "objectClass" },
170 { LDAP_ATTR_LIST_END, NULL },
171};
172
173/* Samba 3.0 group mapping attributes */
174
175ATTRIB_MAP_ENTRY groupmap_attr_list[] = {
176 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
177 { LDAP_ATTR_GROUP_SID, LDAP_ATTRIBUTE_SID },
178 { LDAP_ATTR_GROUP_TYPE, "sambaGroupType" },
179 { LDAP_ATTR_SID_LIST, "sambaSIDList" },
180 { LDAP_ATTR_DESC, "description" },
181 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
182 { LDAP_ATTR_CN, "cn" },
183 { LDAP_ATTR_OBJCLASS, "objectClass" },
184 { LDAP_ATTR_LIST_END, NULL }
185};
186
187ATTRIB_MAP_ENTRY groupmap_attr_list_to_delete[] = {
188 { LDAP_ATTR_GROUP_SID, LDAP_ATTRIBUTE_SID },
189 { LDAP_ATTR_GROUP_TYPE, "sambaGroupType" },
190 { LDAP_ATTR_DESC, "description" },
191 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
192 { LDAP_ATTR_SID_LIST, "sambaSIDList" },
193 { LDAP_ATTR_LIST_END, NULL }
194};
195
196/* idmap_ldap sambaUnixIdPool */
197
198ATTRIB_MAP_ENTRY idpool_attr_list[] = {
199 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
200 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
201 { LDAP_ATTR_OBJCLASS, "objectClass" },
202 { LDAP_ATTR_LIST_END, NULL }
203};
204
205ATTRIB_MAP_ENTRY sidmap_attr_list[] = {
206 { LDAP_ATTR_SID, LDAP_ATTRIBUTE_SID },
207 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
208 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
209 { LDAP_ATTR_OBJCLASS, "objectClass" },
210 { LDAP_ATTR_LIST_END, NULL }
211};
212
213/**********************************************************************
214 perform a simple table lookup and return the attribute name
215 **********************************************************************/
216
217 const char* get_attr_key2string( ATTRIB_MAP_ENTRY table[], int key )
218{
219 int i = 0;
220
221 while ( table[i].attrib != LDAP_ATTR_LIST_END ) {
222 if ( table[i].attrib == key )
223 return table[i].name;
224 i++;
225 }
226
227 return NULL;
228}
229
230
231/**********************************************************************
232 Return the list of attribute names from a mapping table
233 **********************************************************************/
234
235 const char** get_attr_list( TALLOC_CTX *mem_ctx, ATTRIB_MAP_ENTRY table[] )
236{
237 const char **names;
238 int i = 0;
239
240 while ( table[i].attrib != LDAP_ATTR_LIST_END )
241 i++;
242 i++;
243
244 names = TALLOC_ARRAY( mem_ctx, const char*, i );
245 if ( !names ) {
246 DEBUG(0,("get_attr_list: out of memory\n"));
247 return NULL;
248 }
249
250 i = 0;
251 while ( table[i].attrib != LDAP_ATTR_LIST_END ) {
252 names[i] = talloc_strdup( names, table[i].name );
253 i++;
254 }
255 names[i] = NULL;
256
257 return names;
258}
259
260/*******************************************************************
261 Search an attribute and return the first value found.
262******************************************************************/
263
264 bool smbldap_get_single_attribute (LDAP * ldap_struct, LDAPMessage * entry,
265 const char *attribute, char *value,
266 int max_len)
267{
268 char **values;
269
270 if ( !attribute )
271 return False;
272
273 value[0] = '\0';
274
275 if ((values = ldap_get_values (ldap_struct, entry, attribute)) == NULL) {
276 DEBUG (10, ("smbldap_get_single_attribute: [%s] = [<does not exist>]\n", attribute));
277
278 return False;
279 }
280
281 if (convert_string(CH_UTF8, CH_UNIX,values[0], -1, value, max_len, False) == (size_t)-1) {
282 DEBUG(1, ("smbldap_get_single_attribute: string conversion of [%s] = [%s] failed!\n",
283 attribute, values[0]));
284 ldap_value_free(values);
285 return False;
286 }
287
288 ldap_value_free(values);
289#ifdef DEBUG_PASSWORDS
290 DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n", attribute, value));
291#endif
292 return True;
293}
294
295 char * smbldap_talloc_single_attribute(LDAP *ldap_struct, LDAPMessage *entry,
296 const char *attribute,
297 TALLOC_CTX *mem_ctx)
298{
299 char **values;
300 char *result;
301
302 if (attribute == NULL) {
303 return NULL;
304 }
305
306 values = ldap_get_values(ldap_struct, entry, attribute);
307
308 if (values == NULL) {
309 DEBUG(10, ("attribute %s does not exist\n", attribute));
310 return NULL;
311 }
312
313 if (ldap_count_values(values) != 1) {
314 DEBUG(10, ("attribute %s has %d values, expected only one\n",
315 attribute, ldap_count_values(values)));
316 ldap_value_free(values);
317 return NULL;
318 }
319
320 if (pull_utf8_talloc(mem_ctx, &result, values[0]) == (size_t)-1) {
321 DEBUG(10, ("pull_utf8_talloc failed\n"));
322 ldap_value_free(values);
323 return NULL;
324 }
325
326 ldap_value_free(values);
327
328#ifdef DEBUG_PASSWORDS
329 DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n",
330 attribute, result));
331#endif
332 return result;
333}
334
335 static int ldapmsg_destructor(LDAPMessage **result) {
336 ldap_msgfree(*result);
337 return 0;
338}
339
340 void talloc_autofree_ldapmsg(TALLOC_CTX *mem_ctx, LDAPMessage *result)
341{
342 LDAPMessage **handle;
343
344 if (result == NULL) {
345 return;
346 }
347
348 handle = TALLOC_P(mem_ctx, LDAPMessage *);
349 SMB_ASSERT(handle != NULL);
350
351 *handle = result;
352 talloc_set_destructor(handle, ldapmsg_destructor);
353}
354
355 static int ldapmod_destructor(LDAPMod ***mod) {
356 ldap_mods_free(*mod, True);
357 return 0;
358}
359
360 void talloc_autofree_ldapmod(TALLOC_CTX *mem_ctx, LDAPMod **mod)
361{
362 LDAPMod ***handle;
363
364 if (mod == NULL) {
365 return;
366 }
367
368 handle = TALLOC_P(mem_ctx, LDAPMod **);
369 SMB_ASSERT(handle != NULL);
370
371 *handle = mod;
372 talloc_set_destructor(handle, ldapmod_destructor);
373}
374
375/************************************************************************
376 Routine to manage the LDAPMod structure array
377 manage memory used by the array, by each struct, and values
378 ***********************************************************************/
379
380 void smbldap_set_mod (LDAPMod *** modlist, int modop, const char *attribute, const char *value)
381{
382 LDAPMod **mods;
383 int i;
384 int j;
385
386 mods = *modlist;
387
388 /* sanity checks on the mod values */
389
390 if (attribute == NULL || *attribute == '\0') {
391 return;
392 }
393
394#if 0 /* commented out after discussion with abartlet. Do not reenable.
395 left here so other do not re-add similar code --jerry */
396 if (value == NULL || *value == '\0')
397 return;
398#endif
399
400 if (mods == NULL) {
401 mods = SMB_MALLOC_P(LDAPMod *);
402 if (mods == NULL) {
403 smb_panic("smbldap_set_mod: out of memory!");
404 /* notreached. */
405 }
406 mods[0] = NULL;
407 }
408
409 for (i = 0; mods[i] != NULL; ++i) {
410 if (mods[i]->mod_op == modop && strequal(mods[i]->mod_type, attribute))
411 break;
412 }
413
414 if (mods[i] == NULL) {
415 mods = SMB_REALLOC_ARRAY (mods, LDAPMod *, i + 2);
416 if (mods == NULL) {
417 smb_panic("smbldap_set_mod: out of memory!");
418 /* notreached. */
419 }
420 mods[i] = SMB_MALLOC_P(LDAPMod);
421 if (mods[i] == NULL) {
422 smb_panic("smbldap_set_mod: out of memory!");
423 /* notreached. */
424 }
425 mods[i]->mod_op = modop;
426 mods[i]->mod_values = NULL;
427 mods[i]->mod_type = SMB_STRDUP(attribute);
428 mods[i + 1] = NULL;
429 }
430
431 if (value != NULL) {
432 char *utf8_value = NULL;
433
434 j = 0;
435 if (mods[i]->mod_values != NULL) {
436 for (; mods[i]->mod_values[j] != NULL; j++);
437 }
438 mods[i]->mod_values = SMB_REALLOC_ARRAY(mods[i]->mod_values, char *, j + 2);
439
440 if (mods[i]->mod_values == NULL) {
441 smb_panic("smbldap_set_mod: out of memory!");
442 /* notreached. */
443 }
444
445 if (push_utf8_allocate(&utf8_value, value) == (size_t)-1) {
446 smb_panic("smbldap_set_mod: String conversion failure!");
447 /* notreached. */
448 }
449
450 mods[i]->mod_values[j] = utf8_value;
451
452 mods[i]->mod_values[j + 1] = NULL;
453 }
454 *modlist = mods;
455}
456
457/**********************************************************************
458 Set attribute to newval in LDAP, regardless of what value the
459 attribute had in LDAP before.
460*********************************************************************/
461
462 void smbldap_make_mod(LDAP *ldap_struct, LDAPMessage *existing,
463 LDAPMod ***mods,
464 const char *attribute, const char *newval)
465{
466 char oldval[2048]; /* current largest allowed value is mungeddial */
467 bool existed;
468
469 if (attribute == NULL) {
470 /* This can actually happen for ldapsam_compat where we for
471 * example don't have a password history */
472 return;
473 }
474
475 if (existing != NULL) {
476 existed = smbldap_get_single_attribute(ldap_struct, existing, attribute, oldval, sizeof(oldval));
477 } else {
478 existed = False;
479 *oldval = '\0';
480 }
481
482 /* all of our string attributes are case insensitive */
483
484 if (existed && newval && (StrCaseCmp(oldval, newval) == 0)) {
485
486 /* Believe it or not, but LDAP will deny a delete and
487 an add at the same time if the values are the
488 same... */
489 DEBUG(10,("smbldap_make_mod: attribute |%s| not changed.\n", attribute));
490 return;
491 }
492
493 if (existed) {
494 /* There has been no value before, so don't delete it.
495 * Here's a possible race: We might end up with
496 * duplicate attributes */
497 /* By deleting exactly the value we found in the entry this
498 * should be race-free in the sense that the LDAP-Server will
499 * deny the complete operation if somebody changed the
500 * attribute behind our back. */
501 /* This will also allow modifying single valued attributes
502 * in Novell NDS. In NDS you have to first remove attribute and then
503 * you could add new value */
504
505 DEBUG(10,("smbldap_make_mod: deleting attribute |%s| values |%s|\n", attribute, oldval));
506 smbldap_set_mod(mods, LDAP_MOD_DELETE, attribute, oldval);
507 }
508
509 /* Regardless of the real operation (add or modify)
510 we add the new value here. We rely on deleting
511 the old value, should it exist. */
512
513 if ((newval != NULL) && (strlen(newval) > 0)) {
514 DEBUG(10,("smbldap_make_mod: adding attribute |%s| value |%s|\n", attribute, newval));
515 smbldap_set_mod(mods, LDAP_MOD_ADD, attribute, newval);
516 }
517}
518
519/**********************************************************************
520 Some varients of the LDAP rebind code do not pass in the third 'arg'
521 pointer to a void*, so we try and work around it by assuming that the
522 value of the 'LDAP *' pointer is the same as the one we had passed in
523 **********************************************************************/
524
525struct smbldap_state_lookup {
526 LDAP *ld;
527 struct smbldap_state *smbldap_state;
528 struct smbldap_state_lookup *prev, *next;
529};
530
531static struct smbldap_state_lookup *smbldap_state_lookup_list;
532
533static struct smbldap_state *smbldap_find_state(LDAP *ld)
534{
535 struct smbldap_state_lookup *t;
536
537 for (t = smbldap_state_lookup_list; t; t = t->next) {
538 if (t->ld == ld) {
539 return t->smbldap_state;
540 }
541 }
542 return NULL;
543}
544
545static void smbldap_delete_state(struct smbldap_state *smbldap_state)
546{
547 struct smbldap_state_lookup *t;
548
549 for (t = smbldap_state_lookup_list; t; t = t->next) {
550 if (t->smbldap_state == smbldap_state) {
551 DLIST_REMOVE(smbldap_state_lookup_list, t);
552 SAFE_FREE(t);
553 return;
554 }
555 }
556}
557
558static void smbldap_store_state(LDAP *ld, struct smbldap_state *smbldap_state)
559{
560 struct smbldap_state *tmp_ldap_state;
561 struct smbldap_state_lookup *t;
562
563 if ((tmp_ldap_state = smbldap_find_state(ld))) {
564 SMB_ASSERT(tmp_ldap_state == smbldap_state);
565 return;
566 }
567
568 t = SMB_XMALLOC_P(struct smbldap_state_lookup);
569 ZERO_STRUCTP(t);
570
571 DLIST_ADD_END(smbldap_state_lookup_list, t, struct smbldap_state_lookup *);
572 t->ld = ld;
573 t->smbldap_state = smbldap_state;
574}
575
576/********************************************************************
577 start TLS on an existing LDAP connection
578*******************************************************************/
579
580int smb_ldap_start_tls(LDAP *ldap_struct, int version)
581{
582 int rc;
583
584 if (lp_ldap_ssl() != LDAP_SSL_START_TLS) {
585 return LDAP_SUCCESS;
586 }
587
588#ifdef LDAP_OPT_X_TLS
589 if (version != LDAP_VERSION3) {
590 DEBUG(0, ("Need LDAPv3 for Start TLS\n"));
591 return LDAP_OPERATIONS_ERROR;
592 }
593
594 if ((rc = ldap_start_tls_s (ldap_struct, NULL, NULL)) != LDAP_SUCCESS) {
595 DEBUG(0,("Failed to issue the StartTLS instruction: %s\n",
596 ldap_err2string(rc)));
597 return rc;
598 }
599
600 DEBUG (3, ("StartTLS issued: using a TLS connection\n"));
601 return LDAP_SUCCESS;
602#else
603 DEBUG(0,("StartTLS not supported by LDAP client libraries!\n"));
604 return LDAP_OPERATIONS_ERROR;
605#endif
606}
607
608/********************************************************************
609 setup a connection to the LDAP server based on a uri
610*******************************************************************/
611
612int smb_ldap_setup_conn(LDAP **ldap_struct, const char *uri)
613{
614 int rc;
615
616 DEBUG(10, ("smb_ldap_setup_connection: %s\n", uri));
617
618#ifdef HAVE_LDAP_INITIALIZE
619
620 rc = ldap_initialize(ldap_struct, uri);
621 if (rc) {
622 DEBUG(0, ("ldap_initialize: %s\n", ldap_err2string(rc)));
623 }
624
625 return rc;
626#else
627
628 /* Parse the string manually */
629
630 {
631 int port = 0;
632 fstring protocol;
633 fstring host;
634 SMB_ASSERT(sizeof(protocol)>10 && sizeof(host)>254);
635
636
637 /* skip leading "URL:" (if any) */
638 if ( strnequal( uri, "URL:", 4 ) ) {
639 uri += 4;
640 }
641
642 sscanf(uri, "%10[^:]://%254[^:/]:%d", protocol, host, &port);
643
644 if (port == 0) {
645 if (strequal(protocol, "ldap")) {
646 port = LDAP_PORT;
647 } else if (strequal(protocol, "ldaps")) {
648 port = LDAPS_PORT;
649 } else {
650 DEBUG(0, ("unrecognised protocol (%s)!\n", protocol));
651 }
652 }
653
654 if ((*ldap_struct = ldap_init(host, port)) == NULL) {
655 DEBUG(0, ("ldap_init failed !\n"));
656 return LDAP_OPERATIONS_ERROR;
657 }
658
659 if (strequal(protocol, "ldaps")) {
660#ifdef LDAP_OPT_X_TLS
661 int tls = LDAP_OPT_X_TLS_HARD;
662 if (ldap_set_option (*ldap_struct, LDAP_OPT_X_TLS, &tls) != LDAP_SUCCESS)
663 {
664 DEBUG(0, ("Failed to setup a TLS session\n"));
665 }
666
667 DEBUG(3,("LDAPS option set...!\n"));
668#else
669 DEBUG(0,("smbldap_open_connection: Secure connection not supported by LDAP client libraries!\n"));
670 return LDAP_OPERATIONS_ERROR;
671#endif /* LDAP_OPT_X_TLS */
672 }
673 }
674#endif /* HAVE_LDAP_INITIALIZE */
675
676
677 /* now set connection timeout */
678#ifdef LDAP_X_OPT_CONNECT_TIMEOUT /* Netscape */
679 {
680 int ct = lp_ldap_connection_timeout()*1000;
681 rc = ldap_set_option(*ldap_struct, LDAP_X_OPT_CONNECT_TIMEOUT, &ct);
682 if (rc != LDAP_SUCCESS) {
683 DEBUG(0,("Failed to setup an ldap connection timeout %d: %s\n",
684 ct, ldap_err2string(rc)));
685 }
686 }
687#elif defined (LDAP_OPT_NETWORK_TIMEOUT) /* OpenLDAP */
688 {
689 struct timeval ct;
690 ct.tv_usec = 0;
691 ct.tv_sec = lp_ldap_connection_timeout();
692 rc = ldap_set_option(*ldap_struct, LDAP_OPT_NETWORK_TIMEOUT, &ct);
693 if (rc != LDAP_SUCCESS) {
694 DEBUG(0,("Failed to setup an ldap connection timeout %d: %s\n",
695 (int)ct.tv_sec, ldap_err2string(rc)));
696 }
697 }
698#endif
699
700 return LDAP_SUCCESS;
701}
702
703/********************************************************************
704 try to upgrade to Version 3 LDAP if not already, in either case return current
705 version
706 *******************************************************************/
707
708int smb_ldap_upgrade_conn(LDAP *ldap_struct, int *new_version)
709{
710 int version;
711 int rc;
712
713 /* assume the worst */
714 *new_version = LDAP_VERSION2;
715
716 rc = ldap_get_option(ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
717 if (rc) {
718 return rc;
719 }
720
721 if (version == LDAP_VERSION3) {
722 *new_version = LDAP_VERSION3;
723 return LDAP_SUCCESS;
724 }
725
726 /* try upgrade */
727 version = LDAP_VERSION3;
728 rc = ldap_set_option (ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
729 if (rc) {
730 return rc;
731 }
732
733 *new_version = LDAP_VERSION3;
734 return LDAP_SUCCESS;
735}
736
737/*******************************************************************
738 open a connection to the ldap server (just until the bind)
739 ******************************************************************/
740
741int smb_ldap_setup_full_conn(LDAP **ldap_struct, const char *uri)
742{
743 int rc, version;
744
745 rc = smb_ldap_setup_conn(ldap_struct, uri);
746 if (rc) {
747 return rc;
748 }
749
750 rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
751 if (rc) {
752 return rc;
753 }
754
755 rc = smb_ldap_start_tls(*ldap_struct, version);
756 if (rc) {
757 return rc;
758 }
759
760 return LDAP_SUCCESS;
761}
762
763/*******************************************************************
764 open a connection to the ldap server.
765******************************************************************/
766static int smbldap_open_connection (struct smbldap_state *ldap_state)
767
768{
769 int rc = LDAP_SUCCESS;
770 int version;
771 LDAP **ldap_struct = &ldap_state->ldap_struct;
772
773 rc = smb_ldap_setup_conn(ldap_struct, ldap_state->uri);
774 if (rc) {
775 return rc;
776 }
777
778 /* Store the LDAP pointer in a lookup list */
779
780 smbldap_store_state(*ldap_struct, ldap_state);
781
782 /* Upgrade to LDAPv3 if possible */
783
784 rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
785 if (rc) {
786 return rc;
787 }
788
789 /* Start TLS if required */
790
791 rc = smb_ldap_start_tls(*ldap_struct, version);
792 if (rc) {
793 return rc;
794 }
795
796 DEBUG(2, ("smbldap_open_connection: connection opened\n"));
797 return rc;
798}
799
800/*******************************************************************
801 a rebind function for authenticated referrals
802 This version takes a void* that we can shove useful stuff in :-)
803******************************************************************/
804#if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
805#else
806static int rebindproc_with_state (LDAP * ld, char **whop, char **credp,
807 int *methodp, int freeit, void *arg)
808{
809 struct smbldap_state *ldap_state = arg;
810
811 /** @TODO Should we be doing something to check what servers we rebind to?
812 Could we get a referral to a machine that we don't want to give our
813 username and password to? */
814
815 if (freeit) {
816 SAFE_FREE(*whop);
817 if (*credp) {
818 memset(*credp, '\0', strlen(*credp));
819 }
820 SAFE_FREE(*credp);
821 } else {
822 DEBUG(5,("rebind_proc_with_state: Rebinding as \"%s\"\n",
823 ldap_state->bind_dn?ldap_state->bind_dn:"[Anonymous bind]"));
824
825 if (ldap_state->anonymous) {
826 *whop = NULL;
827 *credp = NULL;
828 } else {
829 *whop = SMB_STRDUP(ldap_state->bind_dn);
830 if (!*whop) {
831 return LDAP_NO_MEMORY;
832 }
833 *credp = SMB_STRDUP(ldap_state->bind_secret);
834 if (!*credp) {
835 SAFE_FREE(*whop);
836 return LDAP_NO_MEMORY;
837 }
838 }
839 *methodp = LDAP_AUTH_SIMPLE;
840 }
841
842 GetTimeOfDay(&ldap_state->last_rebind);
843
844 return 0;
845}
846#endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
847
848/*******************************************************************
849 a rebind function for authenticated referrals
850 This version takes a void* that we can shove useful stuff in :-)
851 and actually does the connection.
852******************************************************************/
853#if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
854static int rebindproc_connect_with_state (LDAP *ldap_struct,
855 LDAP_CONST char *url,
856 ber_tag_t request,
857 ber_int_t msgid, void *arg)
858{
859 struct smbldap_state *ldap_state =
860 (struct smbldap_state *)arg;
861 int rc;
862 int version;
863
864 DEBUG(5,("rebindproc_connect_with_state: Rebinding to %s as \"%s\"\n",
865 url, ldap_state->bind_dn?ldap_state->bind_dn:"[Anonymous bind]"));
866
867 /* call START_TLS again (ldaps:// is handled by the OpenLDAP library
868 * itself) before rebinding to another LDAP server to avoid to expose
869 * our credentials. At least *try* to secure the connection - Guenther */
870
871 smb_ldap_upgrade_conn(ldap_struct, &version);
872 smb_ldap_start_tls(ldap_struct, version);
873
874 /** @TODO Should we be doing something to check what servers we rebind to?
875 Could we get a referral to a machine that we don't want to give our
876 username and password to? */
877
878 rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
879
880 /* only set the last rebind timestamp when we did rebind after a
881 * non-read LDAP operation. That way we avoid the replication sleep
882 * after a simple redirected search operation - Guenther */
883
884 switch (request) {
885
886 case LDAP_REQ_MODIFY:
887 case LDAP_REQ_ADD:
888 case LDAP_REQ_DELETE:
889 case LDAP_REQ_MODDN:
890 case LDAP_REQ_EXTENDED:
891 DEBUG(10,("rebindproc_connect_with_state: "
892 "setting last_rebind timestamp "
893 "(req: 0x%02x)\n", (unsigned int)request));
894 GetTimeOfDay(&ldap_state->last_rebind);
895 break;
896 default:
897 ZERO_STRUCT(ldap_state->last_rebind);
898 break;
899 }
900
901 return rc;
902}
903#endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
904
905/*******************************************************************
906 Add a rebind function for authenticated referrals
907******************************************************************/
908#if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
909#else
910# if LDAP_SET_REBIND_PROC_ARGS == 2
911static int rebindproc (LDAP *ldap_struct, char **whop, char **credp,
912 int *method, int freeit )
913{
914 struct smbldap_state *ldap_state = smbldap_find_state(ldap_struct);
915
916 return rebindproc_with_state(ldap_struct, whop, credp,
917 method, freeit, ldap_state);
918
919}
920# endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
921#endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
922
923/*******************************************************************
924 a rebind function for authenticated referrals
925 this also does the connection, but no void*.
926******************************************************************/
927#if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
928# if LDAP_SET_REBIND_PROC_ARGS == 2
929static int rebindproc_connect (LDAP * ld, LDAP_CONST char *url, int request,
930 ber_int_t msgid)
931{
932 struct smbldap_state *ldap_state = smbldap_find_state(ld);
933
934 return rebindproc_connect_with_state(ld, url, (ber_tag_t)request, msgid,
935 ldap_state);
936}
937# endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
938#endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
939
940/*******************************************************************
941 connect to the ldap server under system privilege.
942******************************************************************/
943static int smbldap_connect_system(struct smbldap_state *ldap_state, LDAP * ldap_struct)
944{
945 int rc;
946 int version;
947
948 if (!ldap_state->anonymous && !ldap_state->bind_dn) {
949
950 /* get the default dn and password only if they are not set already */
951 if (!fetch_ldap_pw(&ldap_state->bind_dn, &ldap_state->bind_secret)) {
952 DEBUG(0, ("ldap_connect_system: Failed to retrieve password from secrets.tdb\n"));
953 return LDAP_INVALID_CREDENTIALS;
954 }
955 }
956
957 /* removed the sasl_bind_s "EXTERNAL" stuff, as my testsuite
958 (OpenLDAP) doesnt' seem to support it */
959
960 DEBUG(10,("ldap_connect_system: Binding to ldap server %s as \"%s\"\n",
961 ldap_state->uri, ldap_state->bind_dn));
962
963#ifdef HAVE_LDAP_SET_REBIND_PROC
964#if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
965# if LDAP_SET_REBIND_PROC_ARGS == 2
966 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect);
967# endif
968# if LDAP_SET_REBIND_PROC_ARGS == 3
969 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect_with_state, (void *)ldap_state);
970# endif
971#else /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
972# if LDAP_SET_REBIND_PROC_ARGS == 2
973 ldap_set_rebind_proc(ldap_struct, &rebindproc);
974# endif
975# if LDAP_SET_REBIND_PROC_ARGS == 3
976 ldap_set_rebind_proc(ldap_struct, &rebindproc_with_state, (void *)ldap_state);
977# endif
978#endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
979#endif
980
981 rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
982
983 if (rc != LDAP_SUCCESS) {
984 char *ld_error = NULL;
985 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
986 &ld_error);
987 DEBUG(ldap_state->num_failures ? 2 : 0,
988 ("failed to bind to server %s with dn=\"%s\" Error: %s\n\t%s\n",
989 ldap_state->uri,
990 ldap_state->bind_dn ? ldap_state->bind_dn : "[Anonymous bind]",
991 ldap_err2string(rc),
992 ld_error ? ld_error : "(unknown)"));
993 SAFE_FREE(ld_error);
994 ldap_state->num_failures++;
995 return rc;
996 }
997
998 ldap_state->num_failures = 0;
999 ldap_state->paged_results = False;
1000
1001 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
1002
1003 if (smbldap_has_control(ldap_state->ldap_struct, ADS_PAGE_CTL_OID) && version == 3) {
1004 ldap_state->paged_results = True;
1005 }
1006
1007 DEBUG(3, ("ldap_connect_system: successful connection to the LDAP server\n"));
1008 DEBUGADD(10, ("ldap_connect_system: LDAP server %s support paged results\n",
1009 ldap_state->paged_results ? "does" : "does not"));
1010 return rc;
1011}
1012
1013static void smbldap_idle_fn(struct event_context *event_ctx,
1014 struct timed_event *te,
1015 const struct timeval *now,
1016 void *private_data);
1017
1018/**********************************************************************
1019 Connect to LDAP server (called before every ldap operation)
1020*********************************************************************/
1021static int smbldap_open(struct smbldap_state *ldap_state)
1022{
1023 int rc, opt_rc;
1024 bool reopen = False;
1025 SMB_ASSERT(ldap_state);
1026
1027#ifndef NO_LDAP_SECURITY
1028 if (geteuid() != 0) {
1029 DEBUG(0, ("smbldap_open: cannot access LDAP when not root\n"));
1030 return LDAP_INSUFFICIENT_ACCESS;
1031 }
1032#endif
1033
1034 if ((ldap_state->ldap_struct != NULL) && ((ldap_state->last_ping + SMBLDAP_DONT_PING_TIME) < time(NULL))) {
1035
1036#ifdef HAVE_UNIXSOCKET
1037 struct sockaddr_un addr;
1038#else
1039 struct sockaddr addr;
1040#endif
1041 socklen_t len = sizeof(addr);
1042 int sd;
1043
1044 opt_rc = ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_DESC, &sd);
1045 if (opt_rc == 0 && (getpeername(sd, (struct sockaddr *) &addr, &len)) < 0 )
1046 reopen = True;
1047
1048#ifdef HAVE_UNIXSOCKET
1049 if (opt_rc == 0 && addr.sun_family == AF_UNIX)
1050 reopen = True;
1051#endif
1052 if (reopen) {
1053 /* the other end has died. reopen. */
1054 ldap_unbind(ldap_state->ldap_struct);
1055 ldap_state->ldap_struct = NULL;
1056 ldap_state->last_ping = (time_t)0;
1057 } else {
1058 ldap_state->last_ping = time(NULL);
1059 }
1060 }
1061
1062 if (ldap_state->ldap_struct != NULL) {
1063 DEBUG(11,("smbldap_open: already connected to the LDAP server\n"));
1064 return LDAP_SUCCESS;
1065 }
1066
1067 if ((rc = smbldap_open_connection(ldap_state))) {
1068 return rc;
1069 }
1070
1071 if ((rc = smbldap_connect_system(ldap_state, ldap_state->ldap_struct))) {
1072 ldap_unbind(ldap_state->ldap_struct);
1073 ldap_state->ldap_struct = NULL;
1074 return rc;
1075 }
1076
1077
1078 ldap_state->last_ping = time(NULL);
1079 ldap_state->pid = sys_getpid();
1080
1081 TALLOC_FREE(ldap_state->idle_event);
1082
1083 if (ldap_state->event_context != NULL) {
1084 ldap_state->idle_event = event_add_timed(
1085 ldap_state->event_context, NULL,
1086 timeval_current_ofs(SMBLDAP_IDLE_TIME, 0),
1087 "smbldap_idle_fn", smbldap_idle_fn, ldap_state);
1088 }
1089
1090 DEBUG(4,("The LDAP server is successfully connected\n"));
1091
1092 return LDAP_SUCCESS;
1093}
1094
1095/**********************************************************************
1096Disconnect from LDAP server
1097*********************************************************************/
1098static NTSTATUS smbldap_close(struct smbldap_state *ldap_state)
1099{
1100 if (!ldap_state)
1101 return NT_STATUS_INVALID_PARAMETER;
1102
1103 if (ldap_state->ldap_struct != NULL) {
1104 ldap_unbind(ldap_state->ldap_struct);
1105 ldap_state->ldap_struct = NULL;
1106 }
1107
1108 smbldap_delete_state(ldap_state);
1109
1110 DEBUG(5,("The connection to the LDAP server was closed\n"));
1111 /* maybe free the results here --metze */
1112
1113 return NT_STATUS_OK;
1114}
1115
1116static bool got_alarm;
1117
1118static void (*old_handler)(int);
1119
1120static void gotalarm_sig(int dummy)
1121{
1122 got_alarm = True;
1123}
1124
1125static int another_ldap_try(struct smbldap_state *ldap_state, int *rc,
1126 int *attempts, time_t endtime)
1127{
1128 time_t now = time(NULL);
1129 int open_rc = LDAP_SERVER_DOWN;
1130
1131 if (*rc != LDAP_SERVER_DOWN)
1132 goto no_next;
1133
1134 if (now >= endtime) {
1135 smbldap_close(ldap_state);
1136 *rc = LDAP_TIMEOUT;
1137 goto no_next;
1138 }
1139
1140 if (*attempts == 0) {
1141 got_alarm = False;
1142 old_handler = CatchSignal(SIGALRM, gotalarm_sig);
1143 alarm(endtime - now);
1144
1145 if (ldap_state->pid != sys_getpid())
1146 smbldap_close(ldap_state);
1147 }
1148
1149 while (1) {
1150
1151 if (*attempts != 0)
1152 smb_msleep(1000);
1153
1154 *attempts += 1;
1155
1156 open_rc = smbldap_open(ldap_state);
1157
1158 if (open_rc == LDAP_SUCCESS) {
1159 ldap_state->last_use = now;
1160 return True;
1161 }
1162
1163 if (open_rc == LDAP_INSUFFICIENT_ACCESS) {
1164 /* The fact that we are non-root or any other
1165 * access-denied condition will not change in the next
1166 * round of trying */
1167 *rc = open_rc;
1168 break;
1169 }
1170
1171 if (got_alarm) {
1172 *rc = LDAP_TIMEOUT;
1173 break;
1174 }
1175
1176 if (open_rc != LDAP_SUCCESS) {
1177 DEBUG(1, ("Connection to LDAP server failed for the "
1178 "%d try!\n", *attempts));
1179 }
1180 }
1181
1182 no_next:
1183 CatchSignal(SIGALRM, old_handler);
1184 alarm(0);
1185 ldap_state->last_use = now;
1186 return False;
1187}
1188
1189/*********************************************************************
1190 ********************************************************************/
1191
1192static int smbldap_search_ext(struct smbldap_state *ldap_state,
1193 const char *base, int scope, const char *filter,
1194 const char *attrs[], int attrsonly,
1195 LDAPControl **sctrls, LDAPControl **cctrls,
1196 int sizelimit, LDAPMessage **res)
1197{
1198 int rc = LDAP_SERVER_DOWN;
1199 int attempts = 0;
1200 char *utf8_filter;
1201 time_t endtime = time(NULL)+lp_ldap_timeout();
1202 struct timeval timeout;
1203
1204 SMB_ASSERT(ldap_state);
1205
1206 DEBUG(5,("smbldap_search_ext: base => [%s], filter => [%s], "
1207 "scope => [%d]\n", base, filter, scope));
1208
1209 if (ldap_state->last_rebind.tv_sec > 0) {
1210 struct timeval tval;
1211 SMB_BIG_INT tdiff = 0;
1212 int sleep_time = 0;
1213
1214 ZERO_STRUCT(tval);
1215 GetTimeOfDay(&tval);
1216
1217 tdiff = usec_time_diff(&tval, &ldap_state->last_rebind);
1218 tdiff /= 1000; /* Convert to milliseconds. */
1219
1220 sleep_time = lp_ldap_replication_sleep()-(int)tdiff;
1221 sleep_time = MIN(sleep_time, MAX_LDAP_REPLICATION_SLEEP_TIME);
1222
1223 if (sleep_time > 0) {
1224 /* we wait for the LDAP replication */
1225 DEBUG(5,("smbldap_search_ext: waiting %d milliseconds "
1226 "for LDAP replication.\n",sleep_time));
1227 smb_msleep(sleep_time);
1228 DEBUG(5,("smbldap_search_ext: go on!\n"));
1229 }
1230 ZERO_STRUCT(ldap_state->last_rebind);
1231 }
1232
1233 if (push_utf8_allocate(&utf8_filter, filter) == (size_t)-1) {
1234 return LDAP_NO_MEMORY;
1235 }
1236
1237 /* Setup timeout for the ldap_search_ext_s call - local and remote. */
1238 timeout.tv_sec = lp_ldap_timeout();
1239 timeout.tv_usec = 0;
1240
1241 /* Setup alarm timeout.... Do we need both of these ? JRA.
1242 * Yes, I think we do need both of these. The server timeout only
1243 * covers the case where the server's operation takes too long. It
1244 * does not cover the case where the request hangs on its way to the
1245 * server. The server side timeout is not strictly necessary, it's
1246 * just a bit more kind to the server. VL. */
1247
1248 got_alarm = 0;
1249 CatchSignal(SIGALRM, SIGNAL_CAST gotalarm_sig);
1250 alarm(lp_ldap_timeout());
1251 /* End setup timeout. */
1252
1253 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1254 rc = ldap_search_ext_s(ldap_state->ldap_struct, base, scope,
1255 utf8_filter,
1256 CONST_DISCARD(char **, attrs),
1257 attrsonly, sctrls, cctrls, &timeout,
1258 sizelimit, res);
1259 if (rc != LDAP_SUCCESS) {
1260 char *ld_error = NULL;
1261 int ld_errno;
1262
1263 ldap_get_option(ldap_state->ldap_struct,
1264 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1265
1266 ldap_get_option(ldap_state->ldap_struct,
1267 LDAP_OPT_ERROR_STRING, &ld_error);
1268 DEBUG(10, ("Failed search for base: %s, error: %d (%s) "
1269 "(%s)\n", base, ld_errno,
1270 ldap_err2string(rc),
1271 ld_error ? ld_error : "unknown"));
1272 SAFE_FREE(ld_error);
1273
1274 if (ld_errno == LDAP_SERVER_DOWN) {
1275 ldap_unbind(ldap_state->ldap_struct);
1276 ldap_state->ldap_struct = NULL;
1277 }
1278 }
1279 }
1280
1281 SAFE_FREE(utf8_filter);
1282
1283 /* Teardown timeout. */
1284 CatchSignal(SIGALRM, SIGNAL_CAST SIG_IGN);
1285 alarm(0);
1286
1287 if (got_alarm != 0)
1288 return LDAP_TIMELIMIT_EXCEEDED;
1289
1290 return rc;
1291}
1292
1293int smbldap_search(struct smbldap_state *ldap_state,
1294 const char *base, int scope, const char *filter,
1295 const char *attrs[], int attrsonly,
1296 LDAPMessage **res)
1297{
1298 return smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1299 attrsonly, NULL, NULL, LDAP_NO_LIMIT, res);
1300}
1301
1302int smbldap_search_paged(struct smbldap_state *ldap_state,
1303 const char *base, int scope, const char *filter,
1304 const char **attrs, int attrsonly, int pagesize,
1305 LDAPMessage **res, void **cookie)
1306{
1307 LDAPControl pr;
1308 LDAPControl **rcontrols;
1309 LDAPControl *controls[2] = { NULL, NULL};
1310 BerElement *cookie_be = NULL;
1311 struct berval *cookie_bv = NULL;
1312 int tmp = 0, i, rc;
1313 bool critical = True;
1314
1315 *res = NULL;
1316
1317 DEBUG(3,("smbldap_search_paged: base => [%s], filter => [%s],"
1318 "scope => [%d], pagesize => [%d]\n",
1319 base, filter, scope, pagesize));
1320
1321 cookie_be = ber_alloc_t(LBER_USE_DER);
1322 if (cookie_be == NULL) {
1323 DEBUG(0,("smbldap_create_page_control: ber_alloc_t returns "
1324 "NULL\n"));
1325 return LDAP_NO_MEMORY;
1326 }
1327
1328 /* construct cookie */
1329 if (*cookie != NULL) {
1330 ber_printf(cookie_be, "{iO}", (ber_int_t) pagesize, *cookie);
1331 ber_bvfree((struct berval *)*cookie); /* don't need it from last time */
1332 *cookie = NULL;
1333 } else {
1334 ber_printf(cookie_be, "{io}", (ber_int_t) pagesize, "", 0);
1335 }
1336 ber_flatten(cookie_be, &cookie_bv);
1337
1338 pr.ldctl_oid = CONST_DISCARD(char *, ADS_PAGE_CTL_OID);
1339 pr.ldctl_iscritical = (char) critical;
1340 pr.ldctl_value.bv_len = cookie_bv->bv_len;
1341 pr.ldctl_value.bv_val = cookie_bv->bv_val;
1342
1343 controls[0] = &pr;
1344 controls[1] = NULL;
1345
1346 rc = smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1347 0, controls, NULL, LDAP_NO_LIMIT, res);
1348
1349 ber_free(cookie_be, 1);
1350 ber_bvfree(cookie_bv);
1351
1352 if (rc != 0) {
1353 DEBUG(3,("smbldap_search_paged: smbldap_search_ext(%s) "
1354 "failed with [%s]\n", filter, ldap_err2string(rc)));
1355 goto done;
1356 }
1357
1358 DEBUG(3,("smbldap_search_paged: search was successfull\n"));
1359
1360 rc = ldap_parse_result(ldap_state->ldap_struct, *res, NULL, NULL,
1361 NULL, NULL, &rcontrols, 0);
1362 if (rc != 0) {
1363 DEBUG(3,("smbldap_search_paged: ldap_parse_result failed " \
1364 "with [%s]\n", ldap_err2string(rc)));
1365 goto done;
1366 }
1367
1368 if (rcontrols == NULL)
1369 goto done;
1370
1371 for (i=0; rcontrols[i]; i++) {
1372
1373 if (strcmp(ADS_PAGE_CTL_OID, rcontrols[i]->ldctl_oid) != 0)
1374 continue;
1375
1376 cookie_be = ber_init(&rcontrols[i]->ldctl_value);
1377 ber_scanf(cookie_be,"{iO}", &tmp, &cookie_bv);
1378 /* the berval is the cookie, but must be freed when it is all
1379 done */
1380 if (cookie_bv->bv_len)
1381 *cookie=ber_bvdup(cookie_bv);
1382 else
1383 *cookie=NULL;
1384 ber_bvfree(cookie_bv);
1385 ber_free(cookie_be, 1);
1386 break;
1387 }
1388 ldap_controls_free(rcontrols);
1389done:
1390 return rc;
1391}
1392
1393int smbldap_modify(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1394{
1395 int rc = LDAP_SERVER_DOWN;
1396 int attempts = 0;
1397 char *utf8_dn;
1398 time_t endtime = time(NULL)+lp_ldap_timeout();
1399
1400 SMB_ASSERT(ldap_state);
1401
1402 DEBUG(5,("smbldap_modify: dn => [%s]\n", dn ));
1403
1404 if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1405 return LDAP_NO_MEMORY;
1406 }
1407
1408 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1409 rc = ldap_modify_s(ldap_state->ldap_struct, utf8_dn, attrs);
1410 if (rc != LDAP_SUCCESS) {
1411 char *ld_error = NULL;
1412 int ld_errno;
1413
1414 ldap_get_option(ldap_state->ldap_struct,
1415 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1416
1417 ldap_get_option(ldap_state->ldap_struct,
1418 LDAP_OPT_ERROR_STRING, &ld_error);
1419 DEBUG(10, ("Failed to modify dn: %s, error: %d (%s) "
1420 "(%s)\n", dn, ld_errno,
1421 ldap_err2string(rc),
1422 ld_error ? ld_error : "unknown"));
1423 SAFE_FREE(ld_error);
1424
1425 if (ld_errno == LDAP_SERVER_DOWN) {
1426 ldap_unbind(ldap_state->ldap_struct);
1427 ldap_state->ldap_struct = NULL;
1428 }
1429 }
1430 }
1431
1432 SAFE_FREE(utf8_dn);
1433 return rc;
1434}
1435
1436int smbldap_add(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1437{
1438 int rc = LDAP_SERVER_DOWN;
1439 int attempts = 0;
1440 char *utf8_dn;
1441 time_t endtime = time(NULL)+lp_ldap_timeout();
1442
1443 SMB_ASSERT(ldap_state);
1444
1445 DEBUG(5,("smbldap_add: dn => [%s]\n", dn ));
1446
1447 if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1448 return LDAP_NO_MEMORY;
1449 }
1450
1451 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1452 rc = ldap_add_s(ldap_state->ldap_struct, utf8_dn, attrs);
1453 if (rc != LDAP_SUCCESS) {
1454 char *ld_error = NULL;
1455 int ld_errno;
1456
1457 ldap_get_option(ldap_state->ldap_struct,
1458 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1459
1460 ldap_get_option(ldap_state->ldap_struct,
1461 LDAP_OPT_ERROR_STRING, &ld_error);
1462 DEBUG(10, ("Failed to add dn: %s, error: %d (%s) "
1463 "(%s)\n", dn, ld_errno,
1464 ldap_err2string(rc),
1465 ld_error ? ld_error : "unknown"));
1466 SAFE_FREE(ld_error);
1467
1468 if (ld_errno == LDAP_SERVER_DOWN) {
1469 ldap_unbind(ldap_state->ldap_struct);
1470 ldap_state->ldap_struct = NULL;
1471 }
1472 }
1473 }
1474
1475 SAFE_FREE(utf8_dn);
1476 return rc;
1477}
1478
1479int smbldap_delete(struct smbldap_state *ldap_state, const char *dn)
1480{
1481 int rc = LDAP_SERVER_DOWN;
1482 int attempts = 0;
1483 char *utf8_dn;
1484 time_t endtime = time(NULL)+lp_ldap_timeout();
1485
1486 SMB_ASSERT(ldap_state);
1487
1488 DEBUG(5,("smbldap_delete: dn => [%s]\n", dn ));
1489
1490 if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1491 return LDAP_NO_MEMORY;
1492 }
1493
1494 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1495 rc = ldap_delete_s(ldap_state->ldap_struct, utf8_dn);
1496 if (rc != LDAP_SUCCESS) {
1497 char *ld_error = NULL;
1498 int ld_errno;
1499
1500 ldap_get_option(ldap_state->ldap_struct,
1501 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1502
1503 ldap_get_option(ldap_state->ldap_struct,
1504 LDAP_OPT_ERROR_STRING, &ld_error);
1505 DEBUG(10, ("Failed to delete dn: %s, error: %d (%s) "
1506 "(%s)\n", dn, ld_errno,
1507 ldap_err2string(rc),
1508 ld_error ? ld_error : "unknown"));
1509 SAFE_FREE(ld_error);
1510
1511 if (ld_errno == LDAP_SERVER_DOWN) {
1512 ldap_unbind(ldap_state->ldap_struct);
1513 ldap_state->ldap_struct = NULL;
1514 }
1515 }
1516 }
1517
1518 SAFE_FREE(utf8_dn);
1519 return rc;
1520}
1521
1522int smbldap_extended_operation(struct smbldap_state *ldap_state,
1523 LDAP_CONST char *reqoid, struct berval *reqdata,
1524 LDAPControl **serverctrls, LDAPControl **clientctrls,
1525 char **retoidp, struct berval **retdatap)
1526{
1527 int rc = LDAP_SERVER_DOWN;
1528 int attempts = 0;
1529 time_t endtime = time(NULL)+lp_ldap_timeout();
1530
1531 if (!ldap_state)
1532 return (-1);
1533
1534 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1535 rc = ldap_extended_operation_s(ldap_state->ldap_struct, reqoid,
1536 reqdata, serverctrls,
1537 clientctrls, retoidp, retdatap);
1538 if (rc != LDAP_SUCCESS) {
1539 char *ld_error = NULL;
1540 int ld_errno;
1541
1542 ldap_get_option(ldap_state->ldap_struct,
1543 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1544
1545 ldap_get_option(ldap_state->ldap_struct,
1546 LDAP_OPT_ERROR_STRING, &ld_error);
1547 DEBUG(10, ("Extended operation failed with error: "
1548 "%d (%s) (%s)\n", ld_errno,
1549 ldap_err2string(rc),
1550 ld_error ? ld_error : "unknown"));
1551 SAFE_FREE(ld_error);
1552
1553 if (ld_errno == LDAP_SERVER_DOWN) {
1554 ldap_unbind(ldap_state->ldap_struct);
1555 ldap_state->ldap_struct = NULL;
1556 }
1557 }
1558 }
1559
1560 return rc;
1561}
1562
1563/*******************************************************************
1564 run the search by name.
1565******************************************************************/
1566int smbldap_search_suffix (struct smbldap_state *ldap_state,
1567 const char *filter, const char **search_attr,
1568 LDAPMessage ** result)
1569{
1570 return smbldap_search(ldap_state, lp_ldap_suffix(), LDAP_SCOPE_SUBTREE,
1571 filter, search_attr, 0, result);
1572}
1573
1574static void smbldap_idle_fn(struct event_context *event_ctx,
1575 struct timed_event *te,
1576 const struct timeval *now,
1577 void *private_data)
1578{
1579 struct smbldap_state *state = (struct smbldap_state *)private_data;
1580
1581 TALLOC_FREE(state->idle_event);
1582
1583 if (state->ldap_struct == NULL) {
1584 DEBUG(10,("ldap connection not connected...\n"));
1585 return;
1586 }
1587
1588 if ((state->last_use+SMBLDAP_IDLE_TIME) > now->tv_sec) {
1589 DEBUG(10,("ldap connection not idle...\n"));
1590
1591 state->idle_event = event_add_timed(
1592 event_ctx, NULL,
1593 timeval_add(now, SMBLDAP_IDLE_TIME, 0),
1594 "smbldap_idle_fn", smbldap_idle_fn,
1595 private_data);
1596 return;
1597 }
1598
1599 DEBUG(7,("ldap connection idle...closing connection\n"));
1600 smbldap_close(state);
1601}
1602
1603/**********************************************************************
1604 Housekeeping
1605 *********************************************************************/
1606
1607void smbldap_free_struct(struct smbldap_state **ldap_state)
1608{
1609 smbldap_close(*ldap_state);
1610
1611 if ((*ldap_state)->bind_secret) {
1612 memset((*ldap_state)->bind_secret, '\0', strlen((*ldap_state)->bind_secret));
1613 }
1614
1615 SAFE_FREE((*ldap_state)->bind_dn);
1616 SAFE_FREE((*ldap_state)->bind_secret);
1617
1618 TALLOC_FREE((*ldap_state)->idle_event);
1619
1620 *ldap_state = NULL;
1621
1622 /* No need to free any further, as it is talloc()ed */
1623}
1624
1625
1626/**********************************************************************
1627 Intitalise the 'general' ldap structures, on which ldap operations may be conducted
1628 *********************************************************************/
1629
1630NTSTATUS smbldap_init(TALLOC_CTX *mem_ctx, struct event_context *event_ctx,
1631 const char *location,
1632 struct smbldap_state **smbldap_state)
1633{
1634 *smbldap_state = TALLOC_ZERO_P(mem_ctx, struct smbldap_state);
1635 if (!*smbldap_state) {
1636 DEBUG(0, ("talloc() failed for ldapsam private_data!\n"));
1637 return NT_STATUS_NO_MEMORY;
1638 }
1639
1640 if (location) {
1641 (*smbldap_state)->uri = talloc_strdup(mem_ctx, location);
1642 } else {
1643 (*smbldap_state)->uri = "ldap://localhost";
1644 }
1645
1646 (*smbldap_state)->event_context = event_ctx;
1647
1648 return NT_STATUS_OK;
1649}
1650
1651/*******************************************************************
1652 Return a copy of the DN for a LDAPMessage. Convert from utf8 to CH_UNIX.
1653********************************************************************/
1654char *smbldap_get_dn(LDAP *ld, LDAPMessage *entry)
1655{
1656 char *utf8_dn, *unix_dn;
1657
1658 utf8_dn = ldap_get_dn(ld, entry);
1659 if (!utf8_dn) {
1660 DEBUG (5, ("smbldap_get_dn: ldap_get_dn failed\n"));
1661 return NULL;
1662 }
1663 if (pull_utf8_allocate(&unix_dn, utf8_dn) == (size_t)-1) {
1664 DEBUG (0, ("smbldap_get_dn: String conversion failure utf8 [%s]\n", utf8_dn));
1665 return NULL;
1666 }
1667 ldap_memfree(utf8_dn);
1668 return unix_dn;
1669}
1670
1671 const char *smbldap_talloc_dn(TALLOC_CTX *mem_ctx, LDAP *ld,
1672 LDAPMessage *entry)
1673{
1674 char *utf8_dn, *unix_dn;
1675
1676 utf8_dn = ldap_get_dn(ld, entry);
1677 if (!utf8_dn) {
1678 DEBUG (5, ("smbldap_get_dn: ldap_get_dn failed\n"));
1679 return NULL;
1680 }
1681 if (pull_utf8_talloc(mem_ctx, &unix_dn, utf8_dn) == (size_t)-1) {
1682 DEBUG (0, ("smbldap_get_dn: String conversion failure utf8 "
1683 "[%s]\n", utf8_dn));
1684 return NULL;
1685 }
1686 ldap_memfree(utf8_dn);
1687 return unix_dn;
1688}
1689
1690/*******************************************************************
1691 Check if root-dse has a certain Control or Extension
1692********************************************************************/
1693
1694static bool smbldap_check_root_dse(LDAP *ld, const char **attrs, const char *value)
1695{
1696 LDAPMessage *msg = NULL;
1697 LDAPMessage *entry = NULL;
1698 char **values = NULL;
1699 int rc, num_result, num_values, i;
1700 bool result = False;
1701
1702 if (!attrs[0]) {
1703 DEBUG(3,("smbldap_check_root_dse: nothing to look for\n"));
1704 return False;
1705 }
1706
1707 if (!strequal(attrs[0], "supportedExtension") &&
1708 !strequal(attrs[0], "supportedControl") &&
1709 !strequal(attrs[0], "namingContexts")) {
1710 DEBUG(3,("smbldap_check_root_dse: no idea what to query root-dse for: %s ?\n", attrs[0]));
1711 return False;
1712 }
1713
1714 rc = ldap_search_s(ld, "", LDAP_SCOPE_BASE,
1715 "(objectclass=*)", CONST_DISCARD(char **, attrs), 0 , &msg);
1716
1717 if (rc != LDAP_SUCCESS) {
1718 DEBUG(3,("smbldap_check_root_dse: Could not search rootDSE\n"));
1719 return False;
1720 }
1721
1722 num_result = ldap_count_entries(ld, msg);
1723
1724 if (num_result != 1) {
1725 DEBUG(3,("smbldap_check_root_dse: Expected one rootDSE, got %d\n", num_result));
1726 goto done;
1727 }
1728
1729 entry = ldap_first_entry(ld, msg);
1730
1731 if (entry == NULL) {
1732 DEBUG(3,("smbldap_check_root_dse: Could not retrieve rootDSE\n"));
1733 goto done;
1734 }
1735
1736 values = ldap_get_values(ld, entry, attrs[0]);
1737
1738 if (values == NULL) {
1739 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not support any %s\n", attrs[0]));
1740 goto done;
1741 }
1742
1743 num_values = ldap_count_values(values);
1744
1745 if (num_values == 0) {
1746 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not have any %s\n", attrs[0]));
1747 goto done;
1748 }
1749
1750 for (i=0; i<num_values; i++) {
1751 if (strcmp(values[i], value) == 0)
1752 result = True;
1753 }
1754
1755
1756 done:
1757 if (values != NULL)
1758 ldap_value_free(values);
1759 if (msg != NULL)
1760 ldap_msgfree(msg);
1761
1762 return result;
1763
1764}
1765
1766/*******************************************************************
1767 Check if LDAP-Server supports a certain Control (OID in string format)
1768********************************************************************/
1769
1770bool smbldap_has_control(LDAP *ld, const char *control)
1771{
1772 const char *attrs[] = { "supportedControl", NULL };
1773 return smbldap_check_root_dse(ld, attrs, control);
1774}
1775
1776/*******************************************************************
1777 Check if LDAP-Server supports a certain Extension (OID in string format)
1778********************************************************************/
1779
1780bool smbldap_has_extension(LDAP *ld, const char *extension)
1781{
1782 const char *attrs[] = { "supportedExtension", NULL };
1783 return smbldap_check_root_dse(ld, attrs, extension);
1784}
1785
1786/*******************************************************************
1787 Check if LDAP-Server holds a given namingContext
1788********************************************************************/
1789
1790bool smbldap_has_naming_context(LDAP *ld, const char *naming_context)
1791{
1792 const char *attrs[] = { "namingContexts", NULL };
1793 return smbldap_check_root_dse(ld, attrs, naming_context);
1794}
1795
1796bool smbldap_set_creds(struct smbldap_state *ldap_state, bool anon, const char *dn, const char *secret)
1797{
1798 ldap_state->anonymous = anon;
1799
1800 /* free any previously set credential */
1801
1802 SAFE_FREE(ldap_state->bind_dn);
1803 if (ldap_state->bind_secret) {
1804 /* make sure secrets are zeroed out of memory */
1805 memset(ldap_state->bind_secret, '\0', strlen(ldap_state->bind_secret));
1806 SAFE_FREE(ldap_state->bind_secret);
1807 }
1808
1809 if ( ! anon) {
1810 ldap_state->bind_dn = SMB_STRDUP(dn);
1811 ldap_state->bind_secret = SMB_STRDUP(secret);
1812 }
1813
1814 return True;
1815}
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