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r14060: Only set the last rebind timestamp when we did rebind after a non-read
[Samba/nascimento.git] / source3 / lib / smbldap.c
blob327c5a7c4de6a5ed12121cd4d71d91e713d12802
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( TALLOC_CTX *mem_ctx, ATTRIB_MAP_ENTRY table[] )
234 {
235 const char **names;
236 int i = 0;
237
238 while ( table[i].attrib != LDAP_ATTR_LIST_END )
239 i++;
240 i++;
241
242 names = TALLOC_ARRAY( mem_ctx, const char*, i );
243 if ( !names ) {
244 DEBUG(0,("get_attr_list: out of memory\n"));
245 return NULL;
246 }
247
248 i = 0;
249 while ( table[i].attrib != LDAP_ATTR_LIST_END ) {
250 names[i] = talloc_strdup( names, table[i].name );
251 i++;
252 }
253 names[i] = NULL;
254
255 return names;
256 }
257
258 /*******************************************************************
259 Search an attribute and return the first value found.
260 ******************************************************************/
261
262 BOOL smbldap_get_single_attribute (LDAP * ldap_struct, LDAPMessage * entry,
263 const char *attribute, char *value,
264 int max_len)
265 {
266 char **values;
267
268 if ( !attribute )
269 return False;
270
271 value[0] = '\0';
272
273 if ((values = ldap_get_values (ldap_struct, entry, attribute)) == NULL) {
274 DEBUG (10, ("smbldap_get_single_attribute: [%s] = [<does not exist>]\n", attribute));
275
276 return False;
277 }
278
279 if (convert_string(CH_UTF8, CH_UNIX,values[0], -1, value, max_len, False) == (size_t)-1) {
280 DEBUG(1, ("smbldap_get_single_attribute: string conversion of [%s] = [%s] failed!\n",
281 attribute, values[0]));
282 ldap_value_free(values);
283 return False;
284 }
285
286 ldap_value_free(values);
287 #ifdef DEBUG_PASSWORDS
288 DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n", attribute, value));
289 #endif
290 return True;
291 }
292
293 BOOL smbldap_get_single_pstring (LDAP * ldap_struct, LDAPMessage * entry,
294 const char *attribute, pstring value)
295 {
296 return smbldap_get_single_attribute(ldap_struct, entry,
297 attribute, value,
298 sizeof(pstring));
299 }
300
301 char * smbldap_talloc_single_attribute(LDAP *ldap_struct, LDAPMessage *entry,
302 const char *attribute,
303 TALLOC_CTX *mem_ctx)
304 {
305 char **values;
306 char *result;
307
308 if (attribute == NULL) {
309 return NULL;
310 }
311
312 values = ldap_get_values(ldap_struct, entry, attribute);
313
314 if (values == NULL) {
315 DEBUG(10, ("attribute %s does not exist\n", attribute));
316 return NULL;
317 }
318
319 if (ldap_count_values(values) != 1) {
320 DEBUG(10, ("attribute %s has %d values, expected only one\n",
321 attribute, ldap_count_values(values)));
322 ldap_value_free(values);
323 return NULL;
324 }
325
326 if (pull_utf8_talloc(mem_ctx, &result, values[0]) < 0) {
327 DEBUG(10, ("pull_utf8_talloc failed\n"));
328 ldap_value_free(values);
329 return NULL;
330 }
331
332 ldap_value_free(values);
333
334 #ifdef DEBUG_PASSWORDS
335 DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n",
336 attribute, result));
337 #endif
338 return result;
339 }
340
341 static int ldapmsg_destructor(void *p) {
342 LDAPMessage **result = talloc_get_type_abort(p, LDAPMessage *);
343 ldap_msgfree(*result);
344 return 0;
345 }
346
347 void talloc_autofree_ldapmsg(TALLOC_CTX *mem_ctx, LDAPMessage *result)
348 {
349 LDAPMessage **handle;
350
351 if (result == NULL) {
352 return;
353 }
354
355 handle = TALLOC_P(mem_ctx, LDAPMessage *);
356 SMB_ASSERT(handle != NULL);
357
358 *handle = result;
359 talloc_set_destructor(handle, ldapmsg_destructor);
360 }
361
362 static int ldapmod_destructor(void *p) {
363 LDAPMod ***result = talloc_get_type_abort(p, LDAPMod **);
364 ldap_mods_free(*result, True);
365 return 0;
366 }
367
368 void talloc_autofree_ldapmod(TALLOC_CTX *mem_ctx, LDAPMod **mod)
369 {
370 LDAPMod ***handle;
371
372 if (mod == NULL) {
373 return;
374 }
375
376 handle = TALLOC_P(mem_ctx, LDAPMod **);
377 SMB_ASSERT(handle != NULL);
378
379 *handle = mod;
380 talloc_set_destructor(handle, ldapmod_destructor);
381 }
382
383 /************************************************************************
384 Routine to manage the LDAPMod structure array
385 manage memory used by the array, by each struct, and values
386 ***********************************************************************/
387
388 void smbldap_set_mod (LDAPMod *** modlist, int modop, const char *attribute, const char *value)
389 {
390 LDAPMod **mods;
391 int i;
392 int j;
393
394 mods = *modlist;
395
396 /* sanity checks on the mod values */
397
398 if (attribute == NULL || *attribute == '\0') {
399 return;
400 }
401
402 #if 0 /* commented out after discussion with abartlet. Do not reenable.
403 left here so other do not re-add similar code --jerry */
404 if (value == NULL || *value == '\0')
405 return;
406 #endif
407
408 if (mods == NULL) {
409 mods = SMB_MALLOC_P(LDAPMod *);
410 if (mods == NULL) {
411 DEBUG(0, ("make_a_mod: out of memory!\n"));
412 return;
413 }
414 mods[0] = NULL;
415 }
416
417 for (i = 0; mods[i] != NULL; ++i) {
418 if (mods[i]->mod_op == modop && strequal(mods[i]->mod_type, attribute))
419 break;
420 }
421
422 if (mods[i] == NULL) {
423 mods = SMB_REALLOC_ARRAY (mods, LDAPMod *, i + 2);
424 if (mods == NULL) {
425 DEBUG(0, ("make_a_mod: out of memory!\n"));
426 return;
427 }
428 mods[i] = SMB_MALLOC_P(LDAPMod);
429 if (mods[i] == NULL) {
430 DEBUG(0, ("make_a_mod: out of memory!\n"));
431 return;
432 }
433 mods[i]->mod_op = modop;
434 mods[i]->mod_values = NULL;
435 mods[i]->mod_type = SMB_STRDUP(attribute);
436 mods[i + 1] = NULL;
437 }
438
439 if (value != NULL) {
440 char *utf8_value = NULL;
441
442 j = 0;
443 if (mods[i]->mod_values != NULL) {
444 for (; mods[i]->mod_values[j] != NULL; j++);
445 }
446 mods[i]->mod_values = SMB_REALLOC_ARRAY(mods[i]->mod_values, char *, j + 2);
447
448 if (mods[i]->mod_values == NULL) {
449 DEBUG (0, ("make_a_mod: Memory allocation failure!\n"));
450 return;
451 }
452
453 if (push_utf8_allocate(&utf8_value, value) == (size_t)-1) {
454 DEBUG (0, ("make_a_mod: String conversion failure!\n"));
455 return;
456 }
457
458 mods[i]->mod_values[j] = utf8_value;
459
460 mods[i]->mod_values[j + 1] = NULL;
461 }
462 *modlist = mods;
463 }
464
465 /**********************************************************************
466 Set attribute to newval in LDAP, regardless of what value the
467 attribute had in LDAP before.
468 *********************************************************************/
469
470 void smbldap_make_mod(LDAP *ldap_struct, LDAPMessage *existing,
471 LDAPMod ***mods,
472 const char *attribute, const char *newval)
473 {
474 char oldval[2048]; /* current largest allowed value is mungeddial */
475 BOOL existed;
476
477 if (attribute == NULL) {
478 /* This can actually happen for ldapsam_compat where we for
479 * example don't have a password history */
480 return;
481 }
482
483 if (existing != NULL) {
484 existed = smbldap_get_single_attribute(ldap_struct, existing, attribute, oldval, sizeof(oldval));
485 } else {
486 existed = False;
487 *oldval = '\0';
488 }
489
490 /* all of our string attributes are case insensitive */
491
492 if (existed && newval && (StrCaseCmp(oldval, newval) == 0)) {
493
494 /* Believe it or not, but LDAP will deny a delete and
495 an add at the same time if the values are the
496 same... */
497 DEBUG(10,("smbldap_make_mod: attribute |%s| not changed.\n", attribute));
498 return;
499 }
500
501 if (existed) {
502 /* There has been no value before, so don't delete it.
503 * Here's a possible race: We might end up with
504 * duplicate attributes */
505 /* By deleting exactly the value we found in the entry this
506 * should be race-free in the sense that the LDAP-Server will
507 * deny the complete operation if somebody changed the
508 * attribute behind our back. */
509 /* This will also allow modifying single valued attributes
510 * in Novell NDS. In NDS you have to first remove attribute and then
511 * you could add new value */
512
513 DEBUG(10,("smbldap_make_mod: deleting attribute |%s| values |%s|\n", attribute, oldval));
514 smbldap_set_mod(mods, LDAP_MOD_DELETE, attribute, oldval);
515 }
516
517 /* Regardless of the real operation (add or modify)
518 we add the new value here. We rely on deleting
519 the old value, should it exist. */
520
521 if ((newval != NULL) && (strlen(newval) > 0)) {
522 DEBUG(10,("smbldap_make_mod: adding attribute |%s| value |%s|\n", attribute, newval));
523 smbldap_set_mod(mods, LDAP_MOD_ADD, attribute, newval);
524 }
525 }
526
527 /**********************************************************************
528 Some varients of the LDAP rebind code do not pass in the third 'arg'
529 pointer to a void*, so we try and work around it by assuming that the
530 value of the 'LDAP *' pointer is the same as the one we had passed in
531 **********************************************************************/
532
533 struct smbldap_state_lookup {
534 LDAP *ld;
535 struct smbldap_state *smbldap_state;
536 struct smbldap_state_lookup *prev, *next;
537 };
538
539 static struct smbldap_state_lookup *smbldap_state_lookup_list;
540
541 static struct smbldap_state *smbldap_find_state(LDAP *ld)
542 {
543 struct smbldap_state_lookup *t;
544
545 for (t = smbldap_state_lookup_list; t; t = t->next) {
546 if (t->ld == ld) {
547 return t->smbldap_state;
548 }
549 }
550 return NULL;
551 }
552
553 static void smbldap_delete_state(struct smbldap_state *smbldap_state)
554 {
555 struct smbldap_state_lookup *t;
556
557 for (t = smbldap_state_lookup_list; t; t = t->next) {
558 if (t->smbldap_state == smbldap_state) {
559 DLIST_REMOVE(smbldap_state_lookup_list, t);
560 SAFE_FREE(t);
561 return;
562 }
563 }
564 }
565
566 static void smbldap_store_state(LDAP *ld, struct smbldap_state *smbldap_state)
567 {
568 struct smbldap_state *tmp_ldap_state;
569 struct smbldap_state_lookup *t;
570 struct smbldap_state_lookup *tmp;
571
572 if ((tmp_ldap_state = smbldap_find_state(ld))) {
573 SMB_ASSERT(tmp_ldap_state == smbldap_state);
574 return;
575 }
576
577 t = SMB_XMALLOC_P(struct smbldap_state_lookup);
578 ZERO_STRUCTP(t);
579
580 DLIST_ADD_END(smbldap_state_lookup_list, t, tmp);
581 t->ld = ld;
582 t->smbldap_state = smbldap_state;
583 }
584
585 /********************************************************************
586 start TLS on an existing LDAP connection
587 *******************************************************************/
588
589 int smb_ldap_start_tls(LDAP *ldap_struct, int version)
590 {
591 int rc;
592
593 if (lp_ldap_ssl() != LDAP_SSL_START_TLS) {
594 return LDAP_SUCCESS;
595 }
596
597 #ifdef LDAP_OPT_X_TLS
598 if (version != LDAP_VERSION3) {
599 DEBUG(0, ("Need LDAPv3 for Start TLS\n"));
600 return LDAP_OPERATIONS_ERROR;
601 }
602
603 if ((rc = ldap_start_tls_s (ldap_struct, NULL, NULL)) != LDAP_SUCCESS) {
604 DEBUG(0,("Failed to issue the StartTLS instruction: %s\n",
605 ldap_err2string(rc)));
606 return rc;
607 }
608
609 DEBUG (3, ("StartTLS issued: using a TLS connection\n"));
610 return LDAP_SUCCESS;
611 #else
612 DEBUG(0,("StartTLS not supported by LDAP client libraries!\n"));
613 return LDAP_OPERATIONS_ERROR;
614 #endif
615 }
616
617 /********************************************************************
618 setup a connection to the LDAP server based on a uri
619 *******************************************************************/
620
621 int smb_ldap_setup_conn(LDAP **ldap_struct, const char *uri)
622 {
623 int rc;
624
625 DEBUG(10, ("smb_ldap_setup_connection: %s\n", uri));
626
627 #ifdef HAVE_LDAP_INITIALIZE
628
629 rc = ldap_initialize(ldap_struct, uri);
630 if (rc) {
631 DEBUG(0, ("ldap_initialize: %s\n", ldap_err2string(rc)));
632 }
633
634 return rc;
635 #else
636
637 /* Parse the string manually */
638
639 {
640 int port = 0;
641 fstring protocol;
642 fstring host;
643 SMB_ASSERT(sizeof(protocol)>10 && sizeof(host)>254);
644
645
646 /* skip leading "URL:" (if any) */
647 if ( strnequal( uri, "URL:", 4 ) ) {
648 uri += 4;
649 }
650
651 sscanf(uri, "%10[^:]://%254[^:/]:%d", protocol, host, &port);
652
653 if (port == 0) {
654 if (strequal(protocol, "ldap")) {
655 port = LDAP_PORT;
656 } else if (strequal(protocol, "ldaps")) {
657 port = LDAPS_PORT;
658 } else {
659 DEBUG(0, ("unrecognised protocol (%s)!\n", protocol));
660 }
661 }
662
663 if ((*ldap_struct = ldap_init(host, port)) == NULL) {
664 DEBUG(0, ("ldap_init failed !\n"));
665 return LDAP_OPERATIONS_ERROR;
666 }
667
668 if (strequal(protocol, "ldaps")) {
669 #ifdef LDAP_OPT_X_TLS
670 int tls = LDAP_OPT_X_TLS_HARD;
671 if (ldap_set_option (*ldap_struct, LDAP_OPT_X_TLS, &tls) != LDAP_SUCCESS)
672 {
673 DEBUG(0, ("Failed to setup a TLS session\n"));
674 }
675
676 DEBUG(3,("LDAPS option set...!\n"));
677 #else
678 DEBUG(0,("smbldap_open_connection: Secure connection not supported by LDAP client libraries!\n"));
679 return LDAP_OPERATIONS_ERROR;
680 #endif /* LDAP_OPT_X_TLS */
681 }
682
683 }
684 #endif /* HAVE_LDAP_INITIALIZE */
685 return LDAP_SUCCESS;
686 }
687
688 /********************************************************************
689 try to upgrade to Version 3 LDAP if not already, in either case return current
690 version
691 *******************************************************************/
692
693 int smb_ldap_upgrade_conn(LDAP *ldap_struct, int *new_version)
694 {
695 int version;
696 int rc;
697
698 /* assume the worst */
699 *new_version = LDAP_VERSION2;
700
701 rc = ldap_get_option(ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
702 if (rc) {
703 return rc;
704 }
705
706 if (version == LDAP_VERSION3) {
707 *new_version = LDAP_VERSION3;
708 return LDAP_SUCCESS;
709 }
710
711 /* try upgrade */
712 version = LDAP_VERSION3;
713 rc = ldap_set_option (ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
714 if (rc) {
715 return rc;
716 }
717
718 *new_version = LDAP_VERSION3;
719 return LDAP_SUCCESS;
720 }
721
722 /*******************************************************************
723 open a connection to the ldap server (just until the bind)
724 ******************************************************************/
725
726 int smb_ldap_setup_full_conn(LDAP **ldap_struct, const char *uri)
727 {
728 int rc, version;
729
730 rc = smb_ldap_setup_conn(ldap_struct, uri);
731 if (rc) {
732 return rc;
733 }
734
735 rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
736 if (rc) {
737 return rc;
738 }
739
740 rc = smb_ldap_start_tls(*ldap_struct, version);
741 if (rc) {
742 return rc;
743 }
744
745 return LDAP_SUCCESS;
746 }
747
748 /*******************************************************************
749 open a connection to the ldap server.
750 ******************************************************************/
751 static int smbldap_open_connection (struct smbldap_state *ldap_state)
752
753 {
754 int rc = LDAP_SUCCESS;
755 int version;
756 LDAP **ldap_struct = &ldap_state->ldap_struct;
757
758 rc = smb_ldap_setup_conn(ldap_struct, ldap_state->uri);
759 if (rc) {
760 return rc;
761 }
762
763 /* Store the LDAP pointer in a lookup list */
764
765 smbldap_store_state(*ldap_struct, ldap_state);
766
767 /* Upgrade to LDAPv3 if possible */
768
769 rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
770 if (rc) {
771 return rc;
772 }
773
774 /* Start TLS if required */
775
776 rc = smb_ldap_start_tls(*ldap_struct, version);
777 if (rc) {
778 return rc;
779 }
780
781 DEBUG(2, ("smbldap_open_connection: connection opened\n"));
782 return rc;
783 }
784
785 /*******************************************************************
786 a rebind function for authenticated referrals
787 This version takes a void* that we can shove useful stuff in :-)
788 ******************************************************************/
789 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
790 #else
791 static int rebindproc_with_state (LDAP * ld, char **whop, char **credp,
792 int *methodp, int freeit, void *arg)
793 {
794 struct smbldap_state *ldap_state = arg;
795
796 /** @TODO Should we be doing something to check what servers we rebind to?
797 Could we get a referral to a machine that we don't want to give our
798 username and password to? */
799
800 if (freeit) {
801 SAFE_FREE(*whop);
802 memset(*credp, '\0', strlen(*credp));
803 SAFE_FREE(*credp);
804 } else {
805 DEBUG(5,("rebind_proc_with_state: Rebinding as \"%s\"\n",
806 ldap_state->bind_dn));
807
808 *whop = SMB_STRDUP(ldap_state->bind_dn);
809 if (!*whop) {
810 return LDAP_NO_MEMORY;
811 }
812 *credp = SMB_STRDUP(ldap_state->bind_secret);
813 if (!*credp) {
814 SAFE_FREE(*whop);
815 return LDAP_NO_MEMORY;
816 }
817 *methodp = LDAP_AUTH_SIMPLE;
818 }
819
820 GetTimeOfDay(&ldap_state->last_rebind);
821
822 return 0;
823 }
824 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
825
826 /*******************************************************************
827 a rebind function for authenticated referrals
828 This version takes a void* that we can shove useful stuff in :-)
829 and actually does the connection.
830 ******************************************************************/
831 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
832 static int rebindproc_connect_with_state (LDAP *ldap_struct,
833 LDAP_CONST char *url,
834 ber_tag_t request,
835 ber_int_t msgid, void *arg)
836 {
837 struct smbldap_state *ldap_state = arg;
838 int rc;
839 int version;
840
841 DEBUG(5,("rebindproc_connect_with_state: Rebinding to %s as \"%s\"\n",
842 url, ldap_state->bind_dn));
843
844 /* call START_TLS again (ldaps:// is handled by the OpenLDAP library
845 * itself) before rebinding to another LDAP server to avoid to expose
846 * our credentials. At least *try* to secure the connection - Guenther */
847
848 smb_ldap_upgrade_conn(ldap_struct, &version);
849 smb_ldap_start_tls(ldap_struct, version);
850
851 /** @TODO Should we be doing something to check what servers we rebind to?
852 Could we get a referral to a machine that we don't want to give our
853 username and password to? */
854
855 rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
856
857 /* only set the last rebind timestamp when we did rebind after a
858 * non-read LDAP operation. That way we avoid the replication sleep
859 * after a simple redirected search operation - Guenther */
860
861 switch (request) {
862
863 case LDAP_REQ_MODIFY:
864 case LDAP_REQ_ADD:
865 case LDAP_REQ_DELETE:
866 case LDAP_REQ_MODDN:
867 case LDAP_REQ_EXTENDED:
868 DEBUG(10,("rebindproc_connect_with_state: "
869 "setting last_rebind timestamp "
870 "(req: 0x%02x)\n", request));
871 GetTimeOfDay(&ldap_state->last_rebind);
872 break;
873 default:
874 ZERO_STRUCT(ldap_state->last_rebind);
875 break;
876 }
877
878 return rc;
879 }
880 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
881
882 /*******************************************************************
883 Add a rebind function for authenticated referrals
884 ******************************************************************/
885 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
886 #else
887 # if LDAP_SET_REBIND_PROC_ARGS == 2
888 static int rebindproc (LDAP *ldap_struct, char **whop, char **credp,
889 int *method, int freeit )
890 {
891 struct smbldap_state *ldap_state = smbldap_find_state(ldap_struct);
892
893 return rebindproc_with_state(ldap_struct, whop, credp,
894 method, freeit, ldap_state);
895
896 }
897 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
898 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
899
900 /*******************************************************************
901 a rebind function for authenticated referrals
902 this also does the connection, but no void*.
903 ******************************************************************/
904 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
905 # if LDAP_SET_REBIND_PROC_ARGS == 2
906 static int rebindproc_connect (LDAP * ld, LDAP_CONST char *url, int request,
907 ber_int_t msgid)
908 {
909 struct smbldap_state *ldap_state = smbldap_find_state(ld);
910
911 return rebindproc_connect_with_state(ld, url, (ber_tag_t)request, msgid,
912 ldap_state);
913 }
914 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
915 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
916
917 /*******************************************************************
918 connect to the ldap server under system privilege.
919 ******************************************************************/
920 static int smbldap_connect_system(struct smbldap_state *ldap_state, LDAP * ldap_struct)
921 {
922 int rc;
923 char *ldap_dn;
924 char *ldap_secret;
925 int version;
926
927 /* get the password */
928 if (!fetch_ldap_pw(&ldap_dn, &ldap_secret)) {
929 DEBUG(0, ("ldap_connect_system: Failed to retrieve password from secrets.tdb\n"));
930 return LDAP_INVALID_CREDENTIALS;
931 }
932
933 ldap_state->bind_dn = ldap_dn;
934 ldap_state->bind_secret = ldap_secret;
935
936 /* removed the sasl_bind_s "EXTERNAL" stuff, as my testsuite
937 (OpenLDAP) doesnt' seem to support it */
938
939 DEBUG(10,("ldap_connect_system: Binding to ldap server %s as \"%s\"\n",
940 ldap_state->uri, ldap_dn));
941
942 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
943 # if LDAP_SET_REBIND_PROC_ARGS == 2
944 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect);
945 # endif
946 # if LDAP_SET_REBIND_PROC_ARGS == 3
947 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect_with_state, (void *)ldap_state);
948 # endif
949 #else /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
950 # if LDAP_SET_REBIND_PROC_ARGS == 2
951 ldap_set_rebind_proc(ldap_struct, &rebindproc);
952 # endif
953 # if LDAP_SET_REBIND_PROC_ARGS == 3
954 ldap_set_rebind_proc(ldap_struct, &rebindproc_with_state, (void *)ldap_state);
955 # endif
956 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
957
958 rc = ldap_simple_bind_s(ldap_struct, ldap_dn, ldap_secret);
959
960 if (rc != LDAP_SUCCESS) {
961 char *ld_error = NULL;
962 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
963 &ld_error);
964 DEBUG(ldap_state->num_failures ? 2 : 0,
965 ("failed to bind to server %s with dn=\"%s\" Error: %s\n\t%s\n",
966 ldap_state->uri,
967 ldap_dn ? ldap_dn : "(unknown)", ldap_err2string(rc),
968 ld_error ? ld_error : "(unknown)"));
969 SAFE_FREE(ld_error);
970 ldap_state->num_failures++;
971 return rc;
972 }
973
974 ldap_state->num_failures = 0;
975 ldap_state->paged_results = False;
976
977 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
978
979 if (smbldap_has_control(ldap_state, ADS_PAGE_CTL_OID) && version == 3) {
980 ldap_state->paged_results = True;
981 }
982
983 DEBUG(3, ("ldap_connect_system: succesful connection to the LDAP server\n"));
984 DEBUGADD(10, ("ldap_connect_system: LDAP server %s support paged results\n",
985 ldap_state->paged_results ? "does" : "does not"));
986 return rc;
987 }
988
989 /**********************************************************************
990 Connect to LDAP server (called before every ldap operation)
991 *********************************************************************/
992 static int smbldap_open(struct smbldap_state *ldap_state)
993 {
994 int rc, opt_rc;
995 BOOL reopen = False;
996 SMB_ASSERT(ldap_state);
997
998 #ifndef NO_LDAP_SECURITY
999 if (geteuid() != 0) {
1000 DEBUG(0, ("smbldap_open: cannot access LDAP when not root..\n"));
1001 return LDAP_INSUFFICIENT_ACCESS;
1002 }
1003 #endif
1004
1005 if ((ldap_state->ldap_struct != NULL) && ((ldap_state->last_ping + SMBLDAP_DONT_PING_TIME) < time(NULL))) {
1006
1007 struct sockaddr_un addr;
1008 socklen_t len = sizeof(addr);
1009 int sd;
1010
1011 opt_rc = ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_DESC, &sd);
1012 if (opt_rc == 0 && (getpeername(sd, (struct sockaddr *) &addr, &len)) < 0 )
1013 reopen = True;
1014
1015 #ifdef HAVE_UNIXSOCKET
1016 if (opt_rc == 0 && addr.sun_family == AF_UNIX)
1017 reopen = True;
1018 #endif
1019 if (reopen) {
1020 /* the other end has died. reopen. */
1021 ldap_unbind(ldap_state->ldap_struct);
1022 ldap_state->ldap_struct = NULL;
1023 ldap_state->last_ping = (time_t)0;
1024 } else {
1025 ldap_state->last_ping = time(NULL);
1026 }
1027 }
1028
1029 if (ldap_state->ldap_struct != NULL) {
1030 DEBUG(11,("smbldap_open: already connected to the LDAP server\n"));
1031 return LDAP_SUCCESS;
1032 }
1033
1034 if ((rc = smbldap_open_connection(ldap_state))) {
1035 return rc;
1036 }
1037
1038 if ((rc = smbldap_connect_system(ldap_state, ldap_state->ldap_struct))) {
1039 ldap_unbind(ldap_state->ldap_struct);
1040 ldap_state->ldap_struct = NULL;
1041 return rc;
1042 }
1043
1044
1045 ldap_state->last_ping = time(NULL);
1046 ldap_state->pid = sys_getpid();
1047 DEBUG(4,("The LDAP server is succesfully connected\n"));
1048
1049 return LDAP_SUCCESS;
1050 }
1051
1052 /**********************************************************************
1053 Disconnect from LDAP server
1054 *********************************************************************/
1055 static NTSTATUS smbldap_close(struct smbldap_state *ldap_state)
1056 {
1057 if (!ldap_state)
1058 return NT_STATUS_INVALID_PARAMETER;
1059
1060 if (ldap_state->ldap_struct != NULL) {
1061 ldap_unbind(ldap_state->ldap_struct);
1062 ldap_state->ldap_struct = NULL;
1063 }
1064
1065 smbldap_delete_state(ldap_state);
1066
1067 DEBUG(5,("The connection to the LDAP server was closed\n"));
1068 /* maybe free the results here --metze */
1069
1070
1071
1072 return NT_STATUS_OK;
1073 }
1074
1075 static BOOL got_alarm;
1076
1077 static void (*old_handler)(int);
1078
1079 static void gotalarm_sig(int dummy)
1080 {
1081 got_alarm = True;
1082 }
1083
1084 static int another_ldap_try(struct smbldap_state *ldap_state, int *rc,
1085 int *attempts, time_t endtime)
1086 {
1087 time_t now = time(NULL);
1088 int open_rc = LDAP_SERVER_DOWN;
1089
1090 if (*rc != LDAP_SERVER_DOWN)
1091 goto no_next;
1092
1093 if (now >= endtime) {
1094 smbldap_close(ldap_state);
1095 *rc = LDAP_TIMEOUT;
1096 goto no_next;
1097 }
1098
1099 if (*attempts == 0) {
1100 got_alarm = False;
1101 old_handler = CatchSignal(SIGALRM, gotalarm_sig);
1102 alarm(endtime - now);
1103
1104 if (ldap_state->pid != sys_getpid())
1105 smbldap_close(ldap_state);
1106 }
1107
1108 while (1) {
1109
1110 if (*attempts != 0)
1111 smb_msleep(1000);
1112
1113 *attempts += 1;
1114
1115 open_rc = smbldap_open(ldap_state);
1116
1117 if (open_rc == LDAP_SUCCESS) {
1118 ldap_state->last_use = now;
1119 return True;
1120 }
1121
1122 if (open_rc == LDAP_INSUFFICIENT_ACCESS) {
1123 /* The fact that we are non-root or any other
1124 * access-denied condition will not change in the next
1125 * round of trying */
1126 *rc = open_rc;
1127 break;
1128 }
1129
1130 if (got_alarm) {
1131 *rc = LDAP_TIMEOUT;
1132 break;
1133 }
1134
1135 if (open_rc != LDAP_SUCCESS) {
1136 DEBUG(1, ("Connection to LDAP server failed for the "
1137 "%d try!\n", *attempts));
1138 }
1139 }
1140
1141 no_next:
1142 CatchSignal(SIGALRM, old_handler);
1143 alarm(0);
1144 ldap_state->last_use = now;
1145 return False;
1146 }
1147
1148 /*********************************************************************
1149 ********************************************************************/
1150
1151 static int smbldap_search_ext(struct smbldap_state *ldap_state,
1152 const char *base, int scope, const char *filter,
1153 const char *attrs[], int attrsonly,
1154 LDAPControl **sctrls, LDAPControl **cctrls,
1155 int sizelimit, LDAPMessage **res)
1156 {
1157 int rc = LDAP_SERVER_DOWN;
1158 int attempts = 0;
1159 char *utf8_filter;
1160 time_t endtime = time(NULL)+lp_ldap_timeout();
1161 struct timeval timeout;
1162
1163 SMB_ASSERT(ldap_state);
1164
1165 DEBUG(5,("smbldap_search_ext: base => [%s], filter => [%s], "
1166 "scope => [%d]\n", base, filter, scope));
1167
1168 if (ldap_state->last_rebind.tv_sec > 0) {
1169 struct timeval tval;
1170 SMB_BIG_INT tdiff = 0;
1171 int sleep_time = 0;
1172
1173 ZERO_STRUCT(tval);
1174 GetTimeOfDay(&tval);
1175
1176 tdiff = usec_time_diff(&tval, &ldap_state->last_rebind);
1177 tdiff /= 1000; /* Convert to milliseconds. */
1178
1179 sleep_time = lp_ldap_replication_sleep()-(int)tdiff;
1180 sleep_time = MIN(sleep_time, MAX_LDAP_REPLICATION_SLEEP_TIME);
1181
1182 if (sleep_time > 0) {
1183 /* we wait for the LDAP replication */
1184 DEBUG(5,("smbldap_search_ext: waiting %d milliseconds "
1185 "for LDAP replication.\n",sleep_time));
1186 smb_msleep(sleep_time);
1187 DEBUG(5,("smbldap_search_ext: go on!\n"));
1188 }
1189 ZERO_STRUCT(ldap_state->last_rebind);
1190 }
1191
1192 if (push_utf8_allocate(&utf8_filter, filter) == (size_t)-1) {
1193 return LDAP_NO_MEMORY;
1194 }
1195
1196 /* Setup timeout for the ldap_search_ext_s call - local and remote. */
1197 timeout.tv_sec = lp_ldap_timeout();
1198 timeout.tv_usec = 0;
1199
1200 /* Setup alarm timeout.... Do we need both of these ? JRA.
1201 * Yes, I think we do need both of these. The server timeout only
1202 * covers the case where the server's operation takes too long. It
1203 * does not cover the case where the request hangs on its way to the
1204 * server. The server side timeout is not strictly necessary, it's
1205 * just a bit more kind to the server. VL. */
1206
1207 got_alarm = 0;
1208 CatchSignal(SIGALRM, SIGNAL_CAST gotalarm_sig);
1209 alarm(lp_ldap_timeout());
1210 /* End setup timeout. */
1211
1212 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1213 rc = ldap_search_ext_s(ldap_state->ldap_struct, base, scope,
1214 utf8_filter,
1215 CONST_DISCARD(char **, attrs),
1216 attrsonly, sctrls, cctrls, &timeout,
1217 sizelimit, res);
1218 if (rc != LDAP_SUCCESS) {
1219 char *ld_error = NULL;
1220 ldap_get_option(ldap_state->ldap_struct,
1221 LDAP_OPT_ERROR_STRING, &ld_error);
1222 DEBUG(10,("Failed search for base: %s, error: %s "
1223 "(%s)\n", base, ldap_err2string(rc),
1224 ld_error ? ld_error : "unknown"));
1225 SAFE_FREE(ld_error);
1226 }
1227 }
1228
1229 SAFE_FREE(utf8_filter);
1230
1231 /* Teardown timeout. */
1232 CatchSignal(SIGALRM, SIGNAL_CAST SIG_IGN);
1233 alarm(0);
1234
1235 if (got_alarm != 0)
1236 return LDAP_TIMELIMIT_EXCEEDED;
1237
1238 return rc;
1239 }
1240
1241 int smbldap_search(struct smbldap_state *ldap_state,
1242 const char *base, int scope, const char *filter,
1243 const char *attrs[], int attrsonly,
1244 LDAPMessage **res)
1245 {
1246 return smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1247 attrsonly, NULL, NULL, LDAP_NO_LIMIT, res);
1248 }
1249
1250 int smbldap_search_paged(struct smbldap_state *ldap_state,
1251 const char *base, int scope, const char *filter,
1252 const char **attrs, int attrsonly, int pagesize,
1253 LDAPMessage **res, void **cookie)
1254 {
1255 LDAPControl pr;
1256 LDAPControl **rcontrols;
1257 LDAPControl *controls[2] = { NULL, NULL};
1258 BerElement *cookie_be = NULL;
1259 struct berval *cookie_bv = NULL;
1260 int tmp = 0, i, rc;
1261 BOOL critical = True;
1262
1263 *res = NULL;
1264
1265 DEBUG(3,("smbldap_search_paged: base => [%s], filter => [%s],"
1266 "scope => [%d], pagesize => [%d]\n",
1267 base, filter, scope, pagesize));
1268
1269 cookie_be = ber_alloc_t(LBER_USE_DER);
1270 if (cookie_be == NULL) {
1271 DEBUG(0,("smbldap_create_page_control: ber_alloc_t returns "
1272 "NULL\n"));
1273 return LDAP_NO_MEMORY;
1274 }
1275
1276 /* construct cookie */
1277 if (*cookie != NULL) {
1278 ber_printf(cookie_be, "{iO}", (ber_int_t) pagesize, *cookie);
1279 ber_bvfree(*cookie); /* don't need it from last time */
1280 *cookie = NULL;
1281 } else {
1282 ber_printf(cookie_be, "{io}", (ber_int_t) pagesize, "", 0);
1283 }
1284 ber_flatten(cookie_be, &cookie_bv);
1285
1286 pr.ldctl_oid = CONST_DISCARD(char *, ADS_PAGE_CTL_OID);
1287 pr.ldctl_iscritical = (char) critical;
1288 pr.ldctl_value.bv_len = cookie_bv->bv_len;
1289 pr.ldctl_value.bv_val = cookie_bv->bv_val;
1290
1291 controls[0] = &pr;
1292 controls[1] = NULL;
1293
1294 rc = smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1295 0, controls, NULL, LDAP_NO_LIMIT, res);
1296
1297 ber_free(cookie_be, 1);
1298 ber_bvfree(cookie_bv);
1299
1300 if (rc != 0) {
1301 DEBUG(3,("smbldap_search_paged: smbldap_search_ext(%s) "
1302 "failed with [%s]\n", filter, ldap_err2string(rc)));
1303 goto done;
1304 }
1305
1306 DEBUG(3,("smbldap_search_paged: search was successfull\n"));
1307
1308 rc = ldap_parse_result(ldap_state->ldap_struct, *res, NULL, NULL,
1309 NULL, NULL, &rcontrols, 0);
1310 if (rc != 0) {
1311 DEBUG(3,("smbldap_search_paged: ldap_parse_result failed " \
1312 "with [%s]\n", ldap_err2string(rc)));
1313 goto done;
1314 }
1315
1316 if (rcontrols == NULL)
1317 goto done;
1318
1319 for (i=0; rcontrols[i]; i++) {
1320
1321 if (strcmp(ADS_PAGE_CTL_OID, rcontrols[i]->ldctl_oid) != 0)
1322 continue;
1323
1324 cookie_be = ber_init(&rcontrols[i]->ldctl_value);
1325 ber_scanf(cookie_be,"{iO}", &tmp, &cookie_bv);
1326 /* the berval is the cookie, but must be freed when it is all
1327 done */
1328 if (cookie_bv->bv_len)
1329 *cookie=ber_bvdup(cookie_bv);
1330 else
1331 *cookie=NULL;
1332 ber_bvfree(cookie_bv);
1333 ber_free(cookie_be, 1);
1334 break;
1335 }
1336 ldap_controls_free(rcontrols);
1337 done:
1338 return rc;
1339 }
1340
1341 int smbldap_modify(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1342 {
1343 int rc = LDAP_SERVER_DOWN;
1344 int attempts = 0;
1345 char *utf8_dn;
1346 time_t endtime = time(NULL)+lp_ldap_timeout();
1347
1348 SMB_ASSERT(ldap_state);
1349
1350 DEBUG(5,("smbldap_modify: dn => [%s]\n", dn ));
1351
1352 if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1353 return LDAP_NO_MEMORY;
1354 }
1355
1356 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1357 rc = ldap_modify_s(ldap_state->ldap_struct, utf8_dn, attrs);
1358 if (rc != LDAP_SUCCESS) {
1359 char *ld_error = NULL;
1360 ldap_get_option(ldap_state->ldap_struct,
1361 LDAP_OPT_ERROR_STRING, &ld_error);
1362 DEBUG(10,("Failed to modify dn: %s, error: %s "
1363 "(%s)\n", dn, ldap_err2string(rc),
1364 ld_error ? ld_error : "unknown"));
1365 SAFE_FREE(ld_error);
1366 }
1367 }
1368
1369 SAFE_FREE(utf8_dn);
1370 return rc;
1371 }
1372
1373 int smbldap_add(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1374 {
1375 int rc = LDAP_SERVER_DOWN;
1376 int attempts = 0;
1377 char *utf8_dn;
1378 time_t endtime = time(NULL)+lp_ldap_timeout();
1379
1380 SMB_ASSERT(ldap_state);
1381
1382 DEBUG(5,("smbldap_add: dn => [%s]\n", dn ));
1383
1384 if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1385 return LDAP_NO_MEMORY;
1386 }
1387
1388 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1389 rc = ldap_add_s(ldap_state->ldap_struct, utf8_dn, attrs);
1390 if (rc != LDAP_SUCCESS) {
1391 char *ld_error = NULL;
1392 ldap_get_option(ldap_state->ldap_struct,
1393 LDAP_OPT_ERROR_STRING, &ld_error);
1394 DEBUG(10,("Failed to add dn: %s, error: %s "
1395 "(%s)\n", dn, ldap_err2string(rc),
1396 ld_error ? ld_error : "unknown"));
1397 SAFE_FREE(ld_error);
1398 }
1399 }
1400
1401 SAFE_FREE(utf8_dn);
1402 return rc;
1403 }
1404
1405 int smbldap_delete(struct smbldap_state *ldap_state, const char *dn)
1406 {
1407 int rc = LDAP_SERVER_DOWN;
1408 int attempts = 0;
1409 char *utf8_dn;
1410 time_t endtime = time(NULL)+lp_ldap_timeout();
1411
1412 SMB_ASSERT(ldap_state);
1413
1414 DEBUG(5,("smbldap_delete: dn => [%s]\n", dn ));
1415
1416 if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1417 return LDAP_NO_MEMORY;
1418 }
1419
1420 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1421 rc = ldap_delete_s(ldap_state->ldap_struct, utf8_dn);
1422 if (rc != LDAP_SUCCESS) {
1423 char *ld_error = NULL;
1424 ldap_get_option(ldap_state->ldap_struct,
1425 LDAP_OPT_ERROR_STRING, &ld_error);
1426 DEBUG(10,("Failed to delete dn: %s, error: %s "
1427 "(%s)\n", dn, ldap_err2string(rc),
1428 ld_error ? ld_error : "unknown"));
1429 SAFE_FREE(ld_error);
1430 }
1431 }
1432
1433 SAFE_FREE(utf8_dn);
1434 return rc;
1435 }
1436
1437 int smbldap_extended_operation(struct smbldap_state *ldap_state,
1438 LDAP_CONST char *reqoid, struct berval *reqdata,
1439 LDAPControl **serverctrls, LDAPControl **clientctrls,
1440 char **retoidp, struct berval **retdatap)
1441 {
1442 int rc = LDAP_SERVER_DOWN;
1443 int attempts = 0;
1444 time_t endtime = time(NULL)+lp_ldap_timeout();
1445
1446 if (!ldap_state)
1447 return (-1);
1448
1449 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1450 rc = ldap_extended_operation_s(ldap_state->ldap_struct, reqoid,
1451 reqdata, serverctrls,
1452 clientctrls, retoidp, retdatap);
1453 if (rc != LDAP_SUCCESS) {
1454 char *ld_error = NULL;
1455 ldap_get_option(ldap_state->ldap_struct,
1456 LDAP_OPT_ERROR_STRING, &ld_error);
1457 DEBUG(10,("Extended operation failed with error: %s "
1458 "(%s)\n", ldap_err2string(rc),
1459 ld_error ? ld_error : "unknown"));
1460 SAFE_FREE(ld_error);
1461 }
1462 }
1463
1464 return rc;
1465 }
1466
1467 /*******************************************************************
1468 run the search by name.
1469 ******************************************************************/
1470 int smbldap_search_suffix (struct smbldap_state *ldap_state,
1471 const char *filter, const char **search_attr,
1472 LDAPMessage ** result)
1473 {
1474 return smbldap_search(ldap_state, lp_ldap_suffix(), LDAP_SCOPE_SUBTREE,
1475 filter, search_attr, 0, result);
1476 }
1477
1478 static void smbldap_idle_fn(void **data, time_t *interval, time_t now)
1479 {
1480 struct smbldap_state *state = (struct smbldap_state *)(*data);
1481
1482 if (state->ldap_struct == NULL) {
1483 DEBUG(10,("ldap connection not connected...\n"));
1484 return;
1485 }
1486
1487 if ((state->last_use+SMBLDAP_IDLE_TIME) > now) {
1488 DEBUG(10,("ldap connection not idle...\n"));
1489 return;
1490 }
1491
1492 DEBUG(7,("ldap connection idle...closing connection\n"));
1493 smbldap_close(state);
1494 }
1495
1496 /**********************************************************************
1497 Housekeeping
1498 *********************************************************************/
1499
1500 void smbldap_free_struct(struct smbldap_state **ldap_state)
1501 {
1502 smbldap_close(*ldap_state);
1503
1504 if ((*ldap_state)->bind_secret) {
1505 memset((*ldap_state)->bind_secret, '\0', strlen((*ldap_state)->bind_secret));
1506 }
1507
1508 SAFE_FREE((*ldap_state)->bind_dn);
1509 SAFE_FREE((*ldap_state)->bind_secret);
1510
1511 smb_unregister_idle_event((*ldap_state)->event_id);
1512
1513 *ldap_state = NULL;
1514
1515 /* No need to free any further, as it is talloc()ed */
1516 }
1517
1518
1519 /**********************************************************************
1520 Intitalise the 'general' ldap structures, on which ldap operations may be conducted
1521 *********************************************************************/
1522
1523 NTSTATUS smbldap_init(TALLOC_CTX *mem_ctx, const char *location, struct smbldap_state **smbldap_state)
1524 {
1525 *smbldap_state = TALLOC_ZERO_P(mem_ctx, struct smbldap_state);
1526 if (!*smbldap_state) {
1527 DEBUG(0, ("talloc() failed for ldapsam private_data!\n"));
1528 return NT_STATUS_NO_MEMORY;
1529 }
1530
1531 if (location) {
1532 (*smbldap_state)->uri = talloc_strdup(mem_ctx, location);
1533 } else {
1534 (*smbldap_state)->uri = "ldap://localhost";
1535 }
1536
1537 (*smbldap_state)->event_id =
1538 smb_register_idle_event(smbldap_idle_fn, (void *)(*smbldap_state),
1539 SMBLDAP_IDLE_TIME);
1540
1541 if ((*smbldap_state)->event_id == SMB_EVENT_ID_INVALID) {
1542 DEBUG(0,("Failed to register LDAP idle event!\n"));
1543 return NT_STATUS_INVALID_HANDLE;
1544 }
1545
1546 return NT_STATUS_OK;
1547 }
1548
1549 /*******************************************************************
1550 Return a copy of the DN for a LDAPMessage. Convert from utf8 to CH_UNIX.
1551 ********************************************************************/
1552
1553 char *smbldap_get_dn(LDAP *ld, LDAPMessage *entry)
1554 {
1555 char *utf8_dn, *unix_dn;
1556
1557 utf8_dn = ldap_get_dn(ld, entry);
1558 if (!utf8_dn) {
1559 DEBUG (5, ("smbldap_get_dn: ldap_get_dn failed\n"));
1560 return NULL;
1561 }
1562 if (pull_utf8_allocate(&unix_dn, utf8_dn) == (size_t)-1) {
1563 DEBUG (0, ("smbldap_get_dn: String conversion failure utf8 [%s]\n", utf8_dn));
1564 return NULL;
1565 }
1566 ldap_memfree(utf8_dn);
1567 return unix_dn;
1568 }
1569
1570 const char *smbldap_talloc_dn(TALLOC_CTX *mem_ctx, LDAP *ld,
1571 LDAPMessage *entry)
1572 {
1573 char *utf8_dn, *unix_dn;
1574
1575 utf8_dn = ldap_get_dn(ld, entry);
1576 if (!utf8_dn) {
1577 DEBUG (5, ("smbldap_get_dn: ldap_get_dn failed\n"));
1578 return NULL;
1579 }
1580 if (pull_utf8_talloc(mem_ctx, &unix_dn, utf8_dn) == (size_t)-1) {
1581 DEBUG (0, ("smbldap_get_dn: String conversion failure utf8 "
1582 "[%s]\n", utf8_dn));
1583 return NULL;
1584 }
1585 ldap_memfree(utf8_dn);
1586 return unix_dn;
1587 }
1588
1589 /*******************************************************************
1590 Check if root-dse has a certain Control or Extension
1591 ********************************************************************/
1592
1593 static BOOL smbldap_check_root_dse(struct smbldap_state *ldap_state, const char **attrs, const char *value)
1594 {
1595 LDAPMessage *msg = NULL;
1596 LDAPMessage *entry = NULL;
1597 char **values = NULL;
1598 int rc, num_result, num_values, i;
1599 BOOL result = False;
1600
1601 if (!attrs[0]) {
1602 DEBUG(3,("smbldap_check_root_dse: nothing to look for\n"));
1603 return False;
1604 }
1605
1606 if (!strequal(attrs[0], "supportedExtension") &&
1607 !strequal(attrs[0], "supportedControl") &&
1608 !strequal(attrs[0], "namingContexts")) {
1609 DEBUG(3,("smbldap_check_root_dse: no idea what to query root-dse for: %s ?\n", attrs[0]));
1610 return False;
1611 }
1612
1613 rc = ldap_search_s(ldap_state->ldap_struct, "", LDAP_SCOPE_BASE,
1614 "(objectclass=*)", CONST_DISCARD(char **, attrs), 0 , &msg);
1615
1616 if (rc != LDAP_SUCCESS) {
1617 DEBUG(3,("smbldap_check_root_dse: Could not search rootDSE\n"));
1618 return False;
1619 }
1620
1621 num_result = ldap_count_entries(ldap_state->ldap_struct, msg);
1622
1623 if (num_result != 1) {
1624 DEBUG(3,("smbldap_check_root_dse: Expected one rootDSE, got %d\n", num_result));
1625 goto done;
1626 }
1627
1628 entry = ldap_first_entry(ldap_state->ldap_struct, msg);
1629
1630 if (entry == NULL) {
1631 DEBUG(3,("smbldap_check_root_dse: Could not retrieve rootDSE\n"));
1632 goto done;
1633 }
1634
1635 values = ldap_get_values(ldap_state->ldap_struct, entry, attrs[0]);
1636
1637 if (values == NULL) {
1638 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not support any %s\n", attrs[0]));
1639 goto done;
1640 }
1641
1642 num_values = ldap_count_values(values);
1643
1644 if (num_values == 0) {
1645 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not have any %s\n", attrs[0]));
1646 goto done;
1647 }
1648
1649 for (i=0; i<num_values; i++) {
1650 if (strcmp(values[i], value) == 0)
1651 result = True;
1652 }
1653
1654
1655 done:
1656 if (values != NULL)
1657 ldap_value_free(values);
1658 if (msg != NULL)
1659 ldap_msgfree(msg);
1660
1661 return result;
1662
1663 }
1664
1665 /*******************************************************************
1666 Check if LDAP-Server supports a certain Control (OID in string format)
1667 ********************************************************************/
1668
1669 BOOL smbldap_has_control(struct smbldap_state *ldap_state, const char *control)
1670 {
1671 const char *attrs[] = { "supportedControl", NULL };
1672 return smbldap_check_root_dse(ldap_state, attrs, control);
1673 }
1674
1675 /*******************************************************************
1676 Check if LDAP-Server supports a certain Extension (OID in string format)
1677 ********************************************************************/
1678
1679 BOOL smbldap_has_extension(struct smbldap_state *ldap_state, const char *extension)
1680 {
1681 const char *attrs[] = { "supportedExtension", NULL };
1682 return smbldap_check_root_dse(ldap_state, attrs, extension);
1683 }
1684
1685 /*******************************************************************
1686 Check if LDAP-Server holds a given namingContext
1687 ********************************************************************/
1688
1689 BOOL smbldap_has_naming_context(struct smbldap_state *ldap_state, const char *naming_context)
1690 {
1691 const char *attrs[] = { "namingContexts", NULL };
1692 return smbldap_check_root_dse(ldap_state, attrs, naming_context);
1693 }