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r14345: Fix Coverity #71. We don't currently propagate *any*
[Samba/nascimento.git] / source3 / lib / smbldap.c
bloba81829b3313a801ba9a025a9d61bafba2f47e258
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 smb_panic("smbldap_set_mod: out of memory!\n");
412 /* notreached. */
413 abort();
414 }
415 mods[0] = NULL;
416 }
417
418 for (i = 0; mods[i] != NULL; ++i) {
419 if (mods[i]->mod_op == modop && strequal(mods[i]->mod_type, attribute))
420 break;
421 }
422
423 if (mods[i] == NULL) {
424 mods = SMB_REALLOC_ARRAY (mods, LDAPMod *, i + 2);
425 if (mods == NULL) {
426 smb_panic("smbldap_set_mod: out of memory!\n");
427 /* notreached. */
428 abort();
429 }
430 mods[i] = SMB_MALLOC_P(LDAPMod);
431 if (mods[i] == NULL) {
432 smb_panic("smbldap_set_mod: out of memory!\n");
433 /* notreached. */
434 abort();
435 }
436 mods[i]->mod_op = modop;
437 mods[i]->mod_values = NULL;
438 mods[i]->mod_type = SMB_STRDUP(attribute);
439 mods[i + 1] = NULL;
440 }
441
442 if (value != NULL) {
443 char *utf8_value = NULL;
444
445 j = 0;
446 if (mods[i]->mod_values != NULL) {
447 for (; mods[i]->mod_values[j] != NULL; j++);
448 }
449 mods[i]->mod_values = SMB_REALLOC_ARRAY(mods[i]->mod_values, char *, j + 2);
450
451 if (mods[i]->mod_values == NULL) {
452 smb_panic("smbldap_set_mod: out of memory!\n");
453 /* notreached. */
454 abort();
455 }
456
457 if (push_utf8_allocate(&utf8_value, value) == (size_t)-1) {
458 smb_panic("smbldap_set_mod: String conversion failure!\n");
459 /* notreached. */
460 abort();
461 }
462
463 mods[i]->mod_values[j] = utf8_value;
464
465 mods[i]->mod_values[j + 1] = NULL;
466 }
467 *modlist = mods;
468 }
469
470 /**********************************************************************
471 Set attribute to newval in LDAP, regardless of what value the
472 attribute had in LDAP before.
473 *********************************************************************/
474
475 void smbldap_make_mod(LDAP *ldap_struct, LDAPMessage *existing,
476 LDAPMod ***mods,
477 const char *attribute, const char *newval)
478 {
479 char oldval[2048]; /* current largest allowed value is mungeddial */
480 BOOL existed;
481
482 if (attribute == NULL) {
483 /* This can actually happen for ldapsam_compat where we for
484 * example don't have a password history */
485 return;
486 }
487
488 if (existing != NULL) {
489 existed = smbldap_get_single_attribute(ldap_struct, existing, attribute, oldval, sizeof(oldval));
490 } else {
491 existed = False;
492 *oldval = '\0';
493 }
494
495 /* all of our string attributes are case insensitive */
496
497 if (existed && newval && (StrCaseCmp(oldval, newval) == 0)) {
498
499 /* Believe it or not, but LDAP will deny a delete and
500 an add at the same time if the values are the
501 same... */
502 DEBUG(10,("smbldap_make_mod: attribute |%s| not changed.\n", attribute));
503 return;
504 }
505
506 if (existed) {
507 /* There has been no value before, so don't delete it.
508 * Here's a possible race: We might end up with
509 * duplicate attributes */
510 /* By deleting exactly the value we found in the entry this
511 * should be race-free in the sense that the LDAP-Server will
512 * deny the complete operation if somebody changed the
513 * attribute behind our back. */
514 /* This will also allow modifying single valued attributes
515 * in Novell NDS. In NDS you have to first remove attribute and then
516 * you could add new value */
517
518 DEBUG(10,("smbldap_make_mod: deleting attribute |%s| values |%s|\n", attribute, oldval));
519 smbldap_set_mod(mods, LDAP_MOD_DELETE, attribute, oldval);
520 }
521
522 /* Regardless of the real operation (add or modify)
523 we add the new value here. We rely on deleting
524 the old value, should it exist. */
525
526 if ((newval != NULL) && (strlen(newval) > 0)) {
527 DEBUG(10,("smbldap_make_mod: adding attribute |%s| value |%s|\n", attribute, newval));
528 smbldap_set_mod(mods, LDAP_MOD_ADD, attribute, newval);
529 }
530 }
531
532 /**********************************************************************
533 Some varients of the LDAP rebind code do not pass in the third 'arg'
534 pointer to a void*, so we try and work around it by assuming that the
535 value of the 'LDAP *' pointer is the same as the one we had passed in
536 **********************************************************************/
537
538 struct smbldap_state_lookup {
539 LDAP *ld;
540 struct smbldap_state *smbldap_state;
541 struct smbldap_state_lookup *prev, *next;
542 };
543
544 static struct smbldap_state_lookup *smbldap_state_lookup_list;
545
546 static struct smbldap_state *smbldap_find_state(LDAP *ld)
547 {
548 struct smbldap_state_lookup *t;
549
550 for (t = smbldap_state_lookup_list; t; t = t->next) {
551 if (t->ld == ld) {
552 return t->smbldap_state;
553 }
554 }
555 return NULL;
556 }
557
558 static void smbldap_delete_state(struct smbldap_state *smbldap_state)
559 {
560 struct smbldap_state_lookup *t;
561
562 for (t = smbldap_state_lookup_list; t; t = t->next) {
563 if (t->smbldap_state == smbldap_state) {
564 DLIST_REMOVE(smbldap_state_lookup_list, t);
565 SAFE_FREE(t);
566 return;
567 }
568 }
569 }
570
571 static void smbldap_store_state(LDAP *ld, struct smbldap_state *smbldap_state)
572 {
573 struct smbldap_state *tmp_ldap_state;
574 struct smbldap_state_lookup *t;
575 struct smbldap_state_lookup *tmp;
576
577 if ((tmp_ldap_state = smbldap_find_state(ld))) {
578 SMB_ASSERT(tmp_ldap_state == smbldap_state);
579 return;
580 }
581
582 t = SMB_XMALLOC_P(struct smbldap_state_lookup);
583 ZERO_STRUCTP(t);
584
585 DLIST_ADD_END(smbldap_state_lookup_list, t, tmp);
586 t->ld = ld;
587 t->smbldap_state = smbldap_state;
588 }
589
590 /********************************************************************
591 start TLS on an existing LDAP connection
592 *******************************************************************/
593
594 int smb_ldap_start_tls(LDAP *ldap_struct, int version)
595 {
596 int rc;
597
598 if (lp_ldap_ssl() != LDAP_SSL_START_TLS) {
599 return LDAP_SUCCESS;
600 }
601
602 #ifdef LDAP_OPT_X_TLS
603 if (version != LDAP_VERSION3) {
604 DEBUG(0, ("Need LDAPv3 for Start TLS\n"));
605 return LDAP_OPERATIONS_ERROR;
606 }
607
608 if ((rc = ldap_start_tls_s (ldap_struct, NULL, NULL)) != LDAP_SUCCESS) {
609 DEBUG(0,("Failed to issue the StartTLS instruction: %s\n",
610 ldap_err2string(rc)));
611 return rc;
612 }
613
614 DEBUG (3, ("StartTLS issued: using a TLS connection\n"));
615 return LDAP_SUCCESS;
616 #else
617 DEBUG(0,("StartTLS not supported by LDAP client libraries!\n"));
618 return LDAP_OPERATIONS_ERROR;
619 #endif
620 }
621
622 /********************************************************************
623 setup a connection to the LDAP server based on a uri
624 *******************************************************************/
625
626 int smb_ldap_setup_conn(LDAP **ldap_struct, const char *uri)
627 {
628 int rc;
629
630 DEBUG(10, ("smb_ldap_setup_connection: %s\n", uri));
631
632 #ifdef HAVE_LDAP_INITIALIZE
633
634 rc = ldap_initialize(ldap_struct, uri);
635 if (rc) {
636 DEBUG(0, ("ldap_initialize: %s\n", ldap_err2string(rc)));
637 }
638
639 return rc;
640 #else
641
642 /* Parse the string manually */
643
644 {
645 int port = 0;
646 fstring protocol;
647 fstring host;
648 SMB_ASSERT(sizeof(protocol)>10 && sizeof(host)>254);
649
650
651 /* skip leading "URL:" (if any) */
652 if ( strnequal( uri, "URL:", 4 ) ) {
653 uri += 4;
654 }
655
656 sscanf(uri, "%10[^:]://%254[^:/]:%d", protocol, host, &port);
657
658 if (port == 0) {
659 if (strequal(protocol, "ldap")) {
660 port = LDAP_PORT;
661 } else if (strequal(protocol, "ldaps")) {
662 port = LDAPS_PORT;
663 } else {
664 DEBUG(0, ("unrecognised protocol (%s)!\n", protocol));
665 }
666 }
667
668 if ((*ldap_struct = ldap_init(host, port)) == NULL) {
669 DEBUG(0, ("ldap_init failed !\n"));
670 return LDAP_OPERATIONS_ERROR;
671 }
672
673 if (strequal(protocol, "ldaps")) {
674 #ifdef LDAP_OPT_X_TLS
675 int tls = LDAP_OPT_X_TLS_HARD;
676 if (ldap_set_option (*ldap_struct, LDAP_OPT_X_TLS, &tls) != LDAP_SUCCESS)
677 {
678 DEBUG(0, ("Failed to setup a TLS session\n"));
679 }
680
681 DEBUG(3,("LDAPS option set...!\n"));
682 #else
683 DEBUG(0,("smbldap_open_connection: Secure connection not supported by LDAP client libraries!\n"));
684 return LDAP_OPERATIONS_ERROR;
685 #endif /* LDAP_OPT_X_TLS */
686 }
687
688 }
689 #endif /* HAVE_LDAP_INITIALIZE */
690 return LDAP_SUCCESS;
691 }
692
693 /********************************************************************
694 try to upgrade to Version 3 LDAP if not already, in either case return current
695 version
696 *******************************************************************/
697
698 int smb_ldap_upgrade_conn(LDAP *ldap_struct, int *new_version)
699 {
700 int version;
701 int rc;
702
703 /* assume the worst */
704 *new_version = LDAP_VERSION2;
705
706 rc = ldap_get_option(ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
707 if (rc) {
708 return rc;
709 }
710
711 if (version == LDAP_VERSION3) {
712 *new_version = LDAP_VERSION3;
713 return LDAP_SUCCESS;
714 }
715
716 /* try upgrade */
717 version = LDAP_VERSION3;
718 rc = ldap_set_option (ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
719 if (rc) {
720 return rc;
721 }
722
723 *new_version = LDAP_VERSION3;
724 return LDAP_SUCCESS;
725 }
726
727 /*******************************************************************
728 open a connection to the ldap server (just until the bind)
729 ******************************************************************/
730
731 int smb_ldap_setup_full_conn(LDAP **ldap_struct, const char *uri)
732 {
733 int rc, version;
734
735 rc = smb_ldap_setup_conn(ldap_struct, uri);
736 if (rc) {
737 return rc;
738 }
739
740 rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
741 if (rc) {
742 return rc;
743 }
744
745 rc = smb_ldap_start_tls(*ldap_struct, version);
746 if (rc) {
747 return rc;
748 }
749
750 return LDAP_SUCCESS;
751 }
752
753 /*******************************************************************
754 open a connection to the ldap server.
755 ******************************************************************/
756 static int smbldap_open_connection (struct smbldap_state *ldap_state)
757
758 {
759 int rc = LDAP_SUCCESS;
760 int version;
761 LDAP **ldap_struct = &ldap_state->ldap_struct;
762
763 rc = smb_ldap_setup_conn(ldap_struct, ldap_state->uri);
764 if (rc) {
765 return rc;
766 }
767
768 /* Store the LDAP pointer in a lookup list */
769
770 smbldap_store_state(*ldap_struct, ldap_state);
771
772 /* Upgrade to LDAPv3 if possible */
773
774 rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
775 if (rc) {
776 return rc;
777 }
778
779 /* Start TLS if required */
780
781 rc = smb_ldap_start_tls(*ldap_struct, version);
782 if (rc) {
783 return rc;
784 }
785
786 DEBUG(2, ("smbldap_open_connection: connection opened\n"));
787 return rc;
788 }
789
790 /*******************************************************************
791 a rebind function for authenticated referrals
792 This version takes a void* that we can shove useful stuff in :-)
793 ******************************************************************/
794 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
795 #else
796 static int rebindproc_with_state (LDAP * ld, char **whop, char **credp,
797 int *methodp, int freeit, void *arg)
798 {
799 struct smbldap_state *ldap_state = arg;
800
801 /** @TODO Should we be doing something to check what servers we rebind to?
802 Could we get a referral to a machine that we don't want to give our
803 username and password to? */
804
805 if (freeit) {
806 SAFE_FREE(*whop);
807 memset(*credp, '\0', strlen(*credp));
808 SAFE_FREE(*credp);
809 } else {
810 DEBUG(5,("rebind_proc_with_state: Rebinding as \"%s\"\n",
811 ldap_state->bind_dn));
812
813 *whop = SMB_STRDUP(ldap_state->bind_dn);
814 if (!*whop) {
815 return LDAP_NO_MEMORY;
816 }
817 *credp = SMB_STRDUP(ldap_state->bind_secret);
818 if (!*credp) {
819 SAFE_FREE(*whop);
820 return LDAP_NO_MEMORY;
821 }
822 *methodp = LDAP_AUTH_SIMPLE;
823 }
824
825 GetTimeOfDay(&ldap_state->last_rebind);
826
827 return 0;
828 }
829 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
830
831 /*******************************************************************
832 a rebind function for authenticated referrals
833 This version takes a void* that we can shove useful stuff in :-)
834 and actually does the connection.
835 ******************************************************************/
836 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
837 static int rebindproc_connect_with_state (LDAP *ldap_struct,
838 LDAP_CONST char *url,
839 ber_tag_t request,
840 ber_int_t msgid, void *arg)
841 {
842 struct smbldap_state *ldap_state = arg;
843 int rc;
844 int version;
845
846 DEBUG(5,("rebindproc_connect_with_state: Rebinding to %s as \"%s\"\n",
847 url, ldap_state->bind_dn));
848
849 /* call START_TLS again (ldaps:// is handled by the OpenLDAP library
850 * itself) before rebinding to another LDAP server to avoid to expose
851 * our credentials. At least *try* to secure the connection - Guenther */
852
853 smb_ldap_upgrade_conn(ldap_struct, &version);
854 smb_ldap_start_tls(ldap_struct, version);
855
856 /** @TODO Should we be doing something to check what servers we rebind to?
857 Could we get a referral to a machine that we don't want to give our
858 username and password to? */
859
860 rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
861
862 /* only set the last rebind timestamp when we did rebind after a
863 * non-read LDAP operation. That way we avoid the replication sleep
864 * after a simple redirected search operation - Guenther */
865
866 switch (request) {
867
868 case LDAP_REQ_MODIFY:
869 case LDAP_REQ_ADD:
870 case LDAP_REQ_DELETE:
871 case LDAP_REQ_MODDN:
872 case LDAP_REQ_EXTENDED:
873 DEBUG(10,("rebindproc_connect_with_state: "
874 "setting last_rebind timestamp "
875 "(req: 0x%02x)\n", request));
876 GetTimeOfDay(&ldap_state->last_rebind);
877 break;
878 default:
879 ZERO_STRUCT(ldap_state->last_rebind);
880 break;
881 }
882
883 return rc;
884 }
885 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
886
887 /*******************************************************************
888 Add a rebind function for authenticated referrals
889 ******************************************************************/
890 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
891 #else
892 # if LDAP_SET_REBIND_PROC_ARGS == 2
893 static int rebindproc (LDAP *ldap_struct, char **whop, char **credp,
894 int *method, int freeit )
895 {
896 struct smbldap_state *ldap_state = smbldap_find_state(ldap_struct);
897
898 return rebindproc_with_state(ldap_struct, whop, credp,
899 method, freeit, ldap_state);
900
901 }
902 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
903 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
904
905 /*******************************************************************
906 a rebind function for authenticated referrals
907 this also does the connection, but no void*.
908 ******************************************************************/
909 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
910 # if LDAP_SET_REBIND_PROC_ARGS == 2
911 static int rebindproc_connect (LDAP * ld, LDAP_CONST char *url, int request,
912 ber_int_t msgid)
913 {
914 struct smbldap_state *ldap_state = smbldap_find_state(ld);
915
916 return rebindproc_connect_with_state(ld, url, (ber_tag_t)request, msgid,
917 ldap_state);
918 }
919 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
920 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
921
922 /*******************************************************************
923 connect to the ldap server under system privilege.
924 ******************************************************************/
925 static int smbldap_connect_system(struct smbldap_state *ldap_state, LDAP * ldap_struct)
926 {
927 int rc;
928 char *ldap_dn;
929 char *ldap_secret;
930 int version;
931
932 /* get the password */
933 if (!fetch_ldap_pw(&ldap_dn, &ldap_secret)) {
934 DEBUG(0, ("ldap_connect_system: Failed to retrieve password from secrets.tdb\n"));
935 return LDAP_INVALID_CREDENTIALS;
936 }
937
938 ldap_state->bind_dn = ldap_dn;
939 ldap_state->bind_secret = ldap_secret;
940
941 /* removed the sasl_bind_s "EXTERNAL" stuff, as my testsuite
942 (OpenLDAP) doesnt' seem to support it */
943
944 DEBUG(10,("ldap_connect_system: Binding to ldap server %s as \"%s\"\n",
945 ldap_state->uri, ldap_dn));
946
947 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
948 # if LDAP_SET_REBIND_PROC_ARGS == 2
949 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect);
950 # endif
951 # if LDAP_SET_REBIND_PROC_ARGS == 3
952 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect_with_state, (void *)ldap_state);
953 # endif
954 #else /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
955 # if LDAP_SET_REBIND_PROC_ARGS == 2
956 ldap_set_rebind_proc(ldap_struct, &rebindproc);
957 # endif
958 # if LDAP_SET_REBIND_PROC_ARGS == 3
959 ldap_set_rebind_proc(ldap_struct, &rebindproc_with_state, (void *)ldap_state);
960 # endif
961 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
962
963 rc = ldap_simple_bind_s(ldap_struct, ldap_dn, ldap_secret);
964
965 if (rc != LDAP_SUCCESS) {
966 char *ld_error = NULL;
967 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
968 &ld_error);
969 DEBUG(ldap_state->num_failures ? 2 : 0,
970 ("failed to bind to server %s with dn=\"%s\" Error: %s\n\t%s\n",
971 ldap_state->uri,
972 ldap_dn ? ldap_dn : "(unknown)", ldap_err2string(rc),
973 ld_error ? ld_error : "(unknown)"));
974 SAFE_FREE(ld_error);
975 ldap_state->num_failures++;
976 return rc;
977 }
978
979 ldap_state->num_failures = 0;
980 ldap_state->paged_results = False;
981
982 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
983
984 if (smbldap_has_control(ldap_state, ADS_PAGE_CTL_OID) && version == 3) {
985 ldap_state->paged_results = True;
986 }
987
988 DEBUG(3, ("ldap_connect_system: succesful connection to the LDAP server\n"));
989 DEBUGADD(10, ("ldap_connect_system: LDAP server %s support paged results\n",
990 ldap_state->paged_results ? "does" : "does not"));
991 return rc;
992 }
993
994 /**********************************************************************
995 Connect to LDAP server (called before every ldap operation)
996 *********************************************************************/
997 static int smbldap_open(struct smbldap_state *ldap_state)
998 {
999 int rc, opt_rc;
1000 BOOL reopen = False;
1001 SMB_ASSERT(ldap_state);
1002
1003 #ifndef NO_LDAP_SECURITY
1004 if (geteuid() != 0) {
1005 DEBUG(0, ("smbldap_open: cannot access LDAP when not root..\n"));
1006 return LDAP_INSUFFICIENT_ACCESS;
1007 }
1008 #endif
1009
1010 if ((ldap_state->ldap_struct != NULL) && ((ldap_state->last_ping + SMBLDAP_DONT_PING_TIME) < time(NULL))) {
1011
1012 struct sockaddr_un addr;
1013 socklen_t len = sizeof(addr);
1014 int sd;
1015
1016 opt_rc = ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_DESC, &sd);
1017 if (opt_rc == 0 && (getpeername(sd, (struct sockaddr *) &addr, &len)) < 0 )
1018 reopen = True;
1019
1020 #ifdef HAVE_UNIXSOCKET
1021 if (opt_rc == 0 && addr.sun_family == AF_UNIX)
1022 reopen = True;
1023 #endif
1024 if (reopen) {
1025 /* the other end has died. reopen. */
1026 ldap_unbind(ldap_state->ldap_struct);
1027 ldap_state->ldap_struct = NULL;
1028 ldap_state->last_ping = (time_t)0;
1029 } else {
1030 ldap_state->last_ping = time(NULL);
1031 }
1032 }
1033
1034 if (ldap_state->ldap_struct != NULL) {
1035 DEBUG(11,("smbldap_open: already connected to the LDAP server\n"));
1036 return LDAP_SUCCESS;
1037 }
1038
1039 if ((rc = smbldap_open_connection(ldap_state))) {
1040 return rc;
1041 }
1042
1043 if ((rc = smbldap_connect_system(ldap_state, ldap_state->ldap_struct))) {
1044 ldap_unbind(ldap_state->ldap_struct);
1045 ldap_state->ldap_struct = NULL;
1046 return rc;
1047 }
1048
1049
1050 ldap_state->last_ping = time(NULL);
1051 ldap_state->pid = sys_getpid();
1052 DEBUG(4,("The LDAP server is succesfully connected\n"));
1053
1054 return LDAP_SUCCESS;
1055 }
1056
1057 /**********************************************************************
1058 Disconnect from LDAP server
1059 *********************************************************************/
1060 static NTSTATUS smbldap_close(struct smbldap_state *ldap_state)
1061 {
1062 if (!ldap_state)
1063 return NT_STATUS_INVALID_PARAMETER;
1064
1065 if (ldap_state->ldap_struct != NULL) {
1066 ldap_unbind(ldap_state->ldap_struct);
1067 ldap_state->ldap_struct = NULL;
1068 }
1069
1070 smbldap_delete_state(ldap_state);
1071
1072 DEBUG(5,("The connection to the LDAP server was closed\n"));
1073 /* maybe free the results here --metze */
1074
1075
1076
1077 return NT_STATUS_OK;
1078 }
1079
1080 static BOOL got_alarm;
1081
1082 static void (*old_handler)(int);
1083
1084 static void gotalarm_sig(int dummy)
1085 {
1086 got_alarm = True;
1087 }
1088
1089 static int another_ldap_try(struct smbldap_state *ldap_state, int *rc,
1090 int *attempts, time_t endtime)
1091 {
1092 time_t now = time(NULL);
1093 int open_rc = LDAP_SERVER_DOWN;
1094
1095 if (*rc != LDAP_SERVER_DOWN)
1096 goto no_next;
1097
1098 if (now >= endtime) {
1099 smbldap_close(ldap_state);
1100 *rc = LDAP_TIMEOUT;
1101 goto no_next;
1102 }
1103
1104 if (*attempts == 0) {
1105 got_alarm = False;
1106 old_handler = CatchSignal(SIGALRM, gotalarm_sig);
1107 alarm(endtime - now);
1108
1109 if (ldap_state->pid != sys_getpid())
1110 smbldap_close(ldap_state);
1111 }
1112
1113 while (1) {
1114
1115 if (*attempts != 0)
1116 smb_msleep(1000);
1117
1118 *attempts += 1;
1119
1120 open_rc = smbldap_open(ldap_state);
1121
1122 if (open_rc == LDAP_SUCCESS) {
1123 ldap_state->last_use = now;
1124 return True;
1125 }
1126
1127 if (open_rc == LDAP_INSUFFICIENT_ACCESS) {
1128 /* The fact that we are non-root or any other
1129 * access-denied condition will not change in the next
1130 * round of trying */
1131 *rc = open_rc;
1132 break;
1133 }
1134
1135 if (got_alarm) {
1136 *rc = LDAP_TIMEOUT;
1137 break;
1138 }
1139
1140 if (open_rc != LDAP_SUCCESS) {
1141 DEBUG(1, ("Connection to LDAP server failed for the "
1142 "%d try!\n", *attempts));
1143 }
1144 }
1145
1146 no_next:
1147 CatchSignal(SIGALRM, old_handler);
1148 alarm(0);
1149 ldap_state->last_use = now;
1150 return False;
1151 }
1152
1153 /*********************************************************************
1154 ********************************************************************/
1155
1156 static int smbldap_search_ext(struct smbldap_state *ldap_state,
1157 const char *base, int scope, const char *filter,
1158 const char *attrs[], int attrsonly,
1159 LDAPControl **sctrls, LDAPControl **cctrls,
1160 int sizelimit, LDAPMessage **res)
1161 {
1162 int rc = LDAP_SERVER_DOWN;
1163 int attempts = 0;
1164 char *utf8_filter;
1165 time_t endtime = time(NULL)+lp_ldap_timeout();
1166 struct timeval timeout;
1167
1168 SMB_ASSERT(ldap_state);
1169
1170 DEBUG(5,("smbldap_search_ext: base => [%s], filter => [%s], "
1171 "scope => [%d]\n", base, filter, scope));
1172
1173 if (ldap_state->last_rebind.tv_sec > 0) {
1174 struct timeval tval;
1175 SMB_BIG_INT tdiff = 0;
1176 int sleep_time = 0;
1177
1178 ZERO_STRUCT(tval);
1179 GetTimeOfDay(&tval);
1180
1181 tdiff = usec_time_diff(&tval, &ldap_state->last_rebind);
1182 tdiff /= 1000; /* Convert to milliseconds. */
1183
1184 sleep_time = lp_ldap_replication_sleep()-(int)tdiff;
1185 sleep_time = MIN(sleep_time, MAX_LDAP_REPLICATION_SLEEP_TIME);
1186
1187 if (sleep_time > 0) {
1188 /* we wait for the LDAP replication */
1189 DEBUG(5,("smbldap_search_ext: waiting %d milliseconds "
1190 "for LDAP replication.\n",sleep_time));
1191 smb_msleep(sleep_time);
1192 DEBUG(5,("smbldap_search_ext: go on!\n"));
1193 }
1194 ZERO_STRUCT(ldap_state->last_rebind);
1195 }
1196
1197 if (push_utf8_allocate(&utf8_filter, filter) == (size_t)-1) {
1198 return LDAP_NO_MEMORY;
1199 }
1200
1201 /* Setup timeout for the ldap_search_ext_s call - local and remote. */
1202 timeout.tv_sec = lp_ldap_timeout();
1203 timeout.tv_usec = 0;
1204
1205 /* Setup alarm timeout.... Do we need both of these ? JRA.
1206 * Yes, I think we do need both of these. The server timeout only
1207 * covers the case where the server's operation takes too long. It
1208 * does not cover the case where the request hangs on its way to the
1209 * server. The server side timeout is not strictly necessary, it's
1210 * just a bit more kind to the server. VL. */
1211
1212 got_alarm = 0;
1213 CatchSignal(SIGALRM, SIGNAL_CAST gotalarm_sig);
1214 alarm(lp_ldap_timeout());
1215 /* End setup timeout. */
1216
1217 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1218 rc = ldap_search_ext_s(ldap_state->ldap_struct, base, scope,
1219 utf8_filter,
1220 CONST_DISCARD(char **, attrs),
1221 attrsonly, sctrls, cctrls, &timeout,
1222 sizelimit, res);
1223 if (rc != LDAP_SUCCESS) {
1224 char *ld_error = NULL;
1225 ldap_get_option(ldap_state->ldap_struct,
1226 LDAP_OPT_ERROR_STRING, &ld_error);
1227 DEBUG(10,("Failed search for base: %s, error: %s "
1228 "(%s)\n", base, ldap_err2string(rc),
1229 ld_error ? ld_error : "unknown"));
1230 SAFE_FREE(ld_error);
1231 }
1232 }
1233
1234 SAFE_FREE(utf8_filter);
1235
1236 /* Teardown timeout. */
1237 CatchSignal(SIGALRM, SIGNAL_CAST SIG_IGN);
1238 alarm(0);
1239
1240 if (got_alarm != 0)
1241 return LDAP_TIMELIMIT_EXCEEDED;
1242
1243 return rc;
1244 }
1245
1246 int smbldap_search(struct smbldap_state *ldap_state,
1247 const char *base, int scope, const char *filter,
1248 const char *attrs[], int attrsonly,
1249 LDAPMessage **res)
1250 {
1251 return smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1252 attrsonly, NULL, NULL, LDAP_NO_LIMIT, res);
1253 }
1254
1255 int smbldap_search_paged(struct smbldap_state *ldap_state,
1256 const char *base, int scope, const char *filter,
1257 const char **attrs, int attrsonly, int pagesize,
1258 LDAPMessage **res, void **cookie)
1259 {
1260 LDAPControl pr;
1261 LDAPControl **rcontrols;
1262 LDAPControl *controls[2] = { NULL, NULL};
1263 BerElement *cookie_be = NULL;
1264 struct berval *cookie_bv = NULL;
1265 int tmp = 0, i, rc;
1266 BOOL critical = True;
1267
1268 *res = NULL;
1269
1270 DEBUG(3,("smbldap_search_paged: base => [%s], filter => [%s],"
1271 "scope => [%d], pagesize => [%d]\n",
1272 base, filter, scope, pagesize));
1273
1274 cookie_be = ber_alloc_t(LBER_USE_DER);
1275 if (cookie_be == NULL) {
1276 DEBUG(0,("smbldap_create_page_control: ber_alloc_t returns "
1277 "NULL\n"));
1278 return LDAP_NO_MEMORY;
1279 }
1280
1281 /* construct cookie */
1282 if (*cookie != NULL) {
1283 ber_printf(cookie_be, "{iO}", (ber_int_t) pagesize, *cookie);
1284 ber_bvfree(*cookie); /* don't need it from last time */
1285 *cookie = NULL;
1286 } else {
1287 ber_printf(cookie_be, "{io}", (ber_int_t) pagesize, "", 0);
1288 }
1289 ber_flatten(cookie_be, &cookie_bv);
1290
1291 pr.ldctl_oid = CONST_DISCARD(char *, ADS_PAGE_CTL_OID);
1292 pr.ldctl_iscritical = (char) critical;
1293 pr.ldctl_value.bv_len = cookie_bv->bv_len;
1294 pr.ldctl_value.bv_val = cookie_bv->bv_val;
1295
1296 controls[0] = &pr;
1297 controls[1] = NULL;
1298
1299 rc = smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1300 0, controls, NULL, LDAP_NO_LIMIT, res);
1301
1302 ber_free(cookie_be, 1);
1303 ber_bvfree(cookie_bv);
1304
1305 if (rc != 0) {
1306 DEBUG(3,("smbldap_search_paged: smbldap_search_ext(%s) "
1307 "failed with [%s]\n", filter, ldap_err2string(rc)));
1308 goto done;
1309 }
1310
1311 DEBUG(3,("smbldap_search_paged: search was successfull\n"));
1312
1313 rc = ldap_parse_result(ldap_state->ldap_struct, *res, NULL, NULL,
1314 NULL, NULL, &rcontrols, 0);
1315 if (rc != 0) {
1316 DEBUG(3,("smbldap_search_paged: ldap_parse_result failed " \
1317 "with [%s]\n", ldap_err2string(rc)));
1318 goto done;
1319 }
1320
1321 if (rcontrols == NULL)
1322 goto done;
1323
1324 for (i=0; rcontrols[i]; i++) {
1325
1326 if (strcmp(ADS_PAGE_CTL_OID, rcontrols[i]->ldctl_oid) != 0)
1327 continue;
1328
1329 cookie_be = ber_init(&rcontrols[i]->ldctl_value);
1330 ber_scanf(cookie_be,"{iO}", &tmp, &cookie_bv);
1331 /* the berval is the cookie, but must be freed when it is all
1332 done */
1333 if (cookie_bv->bv_len)
1334 *cookie=ber_bvdup(cookie_bv);
1335 else
1336 *cookie=NULL;
1337 ber_bvfree(cookie_bv);
1338 ber_free(cookie_be, 1);
1339 break;
1340 }
1341 ldap_controls_free(rcontrols);
1342 done:
1343 return rc;
1344 }
1345
1346 int smbldap_modify(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1347 {
1348 int rc = LDAP_SERVER_DOWN;
1349 int attempts = 0;
1350 char *utf8_dn;
1351 time_t endtime = time(NULL)+lp_ldap_timeout();
1352
1353 SMB_ASSERT(ldap_state);
1354
1355 DEBUG(5,("smbldap_modify: dn => [%s]\n", dn ));
1356
1357 if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1358 return LDAP_NO_MEMORY;
1359 }
1360
1361 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1362 rc = ldap_modify_s(ldap_state->ldap_struct, utf8_dn, attrs);
1363 if (rc != LDAP_SUCCESS) {
1364 char *ld_error = NULL;
1365 ldap_get_option(ldap_state->ldap_struct,
1366 LDAP_OPT_ERROR_STRING, &ld_error);
1367 DEBUG(10,("Failed to modify dn: %s, error: %s "
1368 "(%s)\n", dn, ldap_err2string(rc),
1369 ld_error ? ld_error : "unknown"));
1370 SAFE_FREE(ld_error);
1371 }
1372 }
1373
1374 SAFE_FREE(utf8_dn);
1375 return rc;
1376 }
1377
1378 int smbldap_add(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1379 {
1380 int rc = LDAP_SERVER_DOWN;
1381 int attempts = 0;
1382 char *utf8_dn;
1383 time_t endtime = time(NULL)+lp_ldap_timeout();
1384
1385 SMB_ASSERT(ldap_state);
1386
1387 DEBUG(5,("smbldap_add: dn => [%s]\n", dn ));
1388
1389 if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1390 return LDAP_NO_MEMORY;
1391 }
1392
1393 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1394 rc = ldap_add_s(ldap_state->ldap_struct, utf8_dn, attrs);
1395 if (rc != LDAP_SUCCESS) {
1396 char *ld_error = NULL;
1397 ldap_get_option(ldap_state->ldap_struct,
1398 LDAP_OPT_ERROR_STRING, &ld_error);
1399 DEBUG(10,("Failed to add dn: %s, error: %s "
1400 "(%s)\n", dn, ldap_err2string(rc),
1401 ld_error ? ld_error : "unknown"));
1402 SAFE_FREE(ld_error);
1403 }
1404 }
1405
1406 SAFE_FREE(utf8_dn);
1407 return rc;
1408 }
1409
1410 int smbldap_delete(struct smbldap_state *ldap_state, const char *dn)
1411 {
1412 int rc = LDAP_SERVER_DOWN;
1413 int attempts = 0;
1414 char *utf8_dn;
1415 time_t endtime = time(NULL)+lp_ldap_timeout();
1416
1417 SMB_ASSERT(ldap_state);
1418
1419 DEBUG(5,("smbldap_delete: dn => [%s]\n", dn ));
1420
1421 if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1422 return LDAP_NO_MEMORY;
1423 }
1424
1425 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1426 rc = ldap_delete_s(ldap_state->ldap_struct, utf8_dn);
1427 if (rc != LDAP_SUCCESS) {
1428 char *ld_error = NULL;
1429 ldap_get_option(ldap_state->ldap_struct,
1430 LDAP_OPT_ERROR_STRING, &ld_error);
1431 DEBUG(10,("Failed to delete dn: %s, error: %s "
1432 "(%s)\n", dn, ldap_err2string(rc),
1433 ld_error ? ld_error : "unknown"));
1434 SAFE_FREE(ld_error);
1435 }
1436 }
1437
1438 SAFE_FREE(utf8_dn);
1439 return rc;
1440 }
1441
1442 int smbldap_extended_operation(struct smbldap_state *ldap_state,
1443 LDAP_CONST char *reqoid, struct berval *reqdata,
1444 LDAPControl **serverctrls, LDAPControl **clientctrls,
1445 char **retoidp, struct berval **retdatap)
1446 {
1447 int rc = LDAP_SERVER_DOWN;
1448 int attempts = 0;
1449 time_t endtime = time(NULL)+lp_ldap_timeout();
1450
1451 if (!ldap_state)
1452 return (-1);
1453
1454 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1455 rc = ldap_extended_operation_s(ldap_state->ldap_struct, reqoid,
1456 reqdata, serverctrls,
1457 clientctrls, retoidp, retdatap);
1458 if (rc != LDAP_SUCCESS) {
1459 char *ld_error = NULL;
1460 ldap_get_option(ldap_state->ldap_struct,
1461 LDAP_OPT_ERROR_STRING, &ld_error);
1462 DEBUG(10,("Extended operation failed with error: %s "
1463 "(%s)\n", ldap_err2string(rc),
1464 ld_error ? ld_error : "unknown"));
1465 SAFE_FREE(ld_error);
1466 }
1467 }
1468
1469 return rc;
1470 }
1471
1472 /*******************************************************************
1473 run the search by name.
1474 ******************************************************************/
1475 int smbldap_search_suffix (struct smbldap_state *ldap_state,
1476 const char *filter, const char **search_attr,
1477 LDAPMessage ** result)
1478 {
1479 return smbldap_search(ldap_state, lp_ldap_suffix(), LDAP_SCOPE_SUBTREE,
1480 filter, search_attr, 0, result);
1481 }
1482
1483 static void smbldap_idle_fn(void **data, time_t *interval, time_t now)
1484 {
1485 struct smbldap_state *state = (struct smbldap_state *)(*data);
1486
1487 if (state->ldap_struct == NULL) {
1488 DEBUG(10,("ldap connection not connected...\n"));
1489 return;
1490 }
1491
1492 if ((state->last_use+SMBLDAP_IDLE_TIME) > now) {
1493 DEBUG(10,("ldap connection not idle...\n"));
1494 return;
1495 }
1496
1497 DEBUG(7,("ldap connection idle...closing connection\n"));
1498 smbldap_close(state);
1499 }
1500
1501 /**********************************************************************
1502 Housekeeping
1503 *********************************************************************/
1504
1505 void smbldap_free_struct(struct smbldap_state **ldap_state)
1506 {
1507 smbldap_close(*ldap_state);
1508
1509 if ((*ldap_state)->bind_secret) {
1510 memset((*ldap_state)->bind_secret, '\0', strlen((*ldap_state)->bind_secret));
1511 }
1512
1513 SAFE_FREE((*ldap_state)->bind_dn);
1514 SAFE_FREE((*ldap_state)->bind_secret);
1515
1516 smb_unregister_idle_event((*ldap_state)->event_id);
1517
1518 *ldap_state = NULL;
1519
1520 /* No need to free any further, as it is talloc()ed */
1521 }
1522
1523
1524 /**********************************************************************
1525 Intitalise the 'general' ldap structures, on which ldap operations may be conducted
1526 *********************************************************************/
1527
1528 NTSTATUS smbldap_init(TALLOC_CTX *mem_ctx, const char *location, struct smbldap_state **smbldap_state)
1529 {
1530 *smbldap_state = TALLOC_ZERO_P(mem_ctx, struct smbldap_state);
1531 if (!*smbldap_state) {
1532 DEBUG(0, ("talloc() failed for ldapsam private_data!\n"));
1533 return NT_STATUS_NO_MEMORY;
1534 }
1535
1536 if (location) {
1537 (*smbldap_state)->uri = talloc_strdup(mem_ctx, location);
1538 } else {
1539 (*smbldap_state)->uri = "ldap://localhost";
1540 }
1541
1542 (*smbldap_state)->event_id =
1543 smb_register_idle_event(smbldap_idle_fn, (void *)(*smbldap_state),
1544 SMBLDAP_IDLE_TIME);
1545
1546 if ((*smbldap_state)->event_id == SMB_EVENT_ID_INVALID) {
1547 DEBUG(0,("Failed to register LDAP idle event!\n"));
1548 return NT_STATUS_INVALID_HANDLE;
1549 }
1550
1551 return NT_STATUS_OK;
1552 }
1553
1554 /*******************************************************************
1555 Return a copy of the DN for a LDAPMessage. Convert from utf8 to CH_UNIX.
1556 ********************************************************************/
1557
1558 char *smbldap_get_dn(LDAP *ld, LDAPMessage *entry)
1559 {
1560 char *utf8_dn, *unix_dn;
1561
1562 utf8_dn = ldap_get_dn(ld, entry);
1563 if (!utf8_dn) {
1564 DEBUG (5, ("smbldap_get_dn: ldap_get_dn failed\n"));
1565 return NULL;
1566 }
1567 if (pull_utf8_allocate(&unix_dn, utf8_dn) == (size_t)-1) {
1568 DEBUG (0, ("smbldap_get_dn: String conversion failure utf8 [%s]\n", utf8_dn));
1569 return NULL;
1570 }
1571 ldap_memfree(utf8_dn);
1572 return unix_dn;
1573 }
1574
1575 const char *smbldap_talloc_dn(TALLOC_CTX *mem_ctx, LDAP *ld,
1576 LDAPMessage *entry)
1577 {
1578 char *utf8_dn, *unix_dn;
1579
1580 utf8_dn = ldap_get_dn(ld, entry);
1581 if (!utf8_dn) {
1582 DEBUG (5, ("smbldap_get_dn: ldap_get_dn failed\n"));
1583 return NULL;
1584 }
1585 if (pull_utf8_talloc(mem_ctx, &unix_dn, utf8_dn) == (size_t)-1) {
1586 DEBUG (0, ("smbldap_get_dn: String conversion failure utf8 "
1587 "[%s]\n", utf8_dn));
1588 return NULL;
1589 }
1590 ldap_memfree(utf8_dn);
1591 return unix_dn;
1592 }
1593
1594 /*******************************************************************
1595 Check if root-dse has a certain Control or Extension
1596 ********************************************************************/
1597
1598 static BOOL smbldap_check_root_dse(struct smbldap_state *ldap_state, const char **attrs, const char *value)
1599 {
1600 LDAPMessage *msg = NULL;
1601 LDAPMessage *entry = NULL;
1602 char **values = NULL;
1603 int rc, num_result, num_values, i;
1604 BOOL result = False;
1605
1606 if (!attrs[0]) {
1607 DEBUG(3,("smbldap_check_root_dse: nothing to look for\n"));
1608 return False;
1609 }
1610
1611 if (!strequal(attrs[0], "supportedExtension") &&
1612 !strequal(attrs[0], "supportedControl") &&
1613 !strequal(attrs[0], "namingContexts")) {
1614 DEBUG(3,("smbldap_check_root_dse: no idea what to query root-dse for: %s ?\n", attrs[0]));
1615 return False;
1616 }
1617
1618 rc = ldap_search_s(ldap_state->ldap_struct, "", LDAP_SCOPE_BASE,
1619 "(objectclass=*)", CONST_DISCARD(char **, attrs), 0 , &msg);
1620
1621 if (rc != LDAP_SUCCESS) {
1622 DEBUG(3,("smbldap_check_root_dse: Could not search rootDSE\n"));
1623 return False;
1624 }
1625
1626 num_result = ldap_count_entries(ldap_state->ldap_struct, msg);
1627
1628 if (num_result != 1) {
1629 DEBUG(3,("smbldap_check_root_dse: Expected one rootDSE, got %d\n", num_result));
1630 goto done;
1631 }
1632
1633 entry = ldap_first_entry(ldap_state->ldap_struct, msg);
1634
1635 if (entry == NULL) {
1636 DEBUG(3,("smbldap_check_root_dse: Could not retrieve rootDSE\n"));
1637 goto done;
1638 }
1639
1640 values = ldap_get_values(ldap_state->ldap_struct, entry, attrs[0]);
1641
1642 if (values == NULL) {
1643 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not support any %s\n", attrs[0]));
1644 goto done;
1645 }
1646
1647 num_values = ldap_count_values(values);
1648
1649 if (num_values == 0) {
1650 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not have any %s\n", attrs[0]));
1651 goto done;
1652 }
1653
1654 for (i=0; i<num_values; i++) {
1655 if (strcmp(values[i], value) == 0)
1656 result = True;
1657 }
1658
1659
1660 done:
1661 if (values != NULL)
1662 ldap_value_free(values);
1663 if (msg != NULL)
1664 ldap_msgfree(msg);
1665
1666 return result;
1667
1668 }
1669
1670 /*******************************************************************
1671 Check if LDAP-Server supports a certain Control (OID in string format)
1672 ********************************************************************/
1673
1674 BOOL smbldap_has_control(struct smbldap_state *ldap_state, const char *control)
1675 {
1676 const char *attrs[] = { "supportedControl", NULL };
1677 return smbldap_check_root_dse(ldap_state, attrs, control);
1678 }
1679
1680 /*******************************************************************
1681 Check if LDAP-Server supports a certain Extension (OID in string format)
1682 ********************************************************************/
1683
1684 BOOL smbldap_has_extension(struct smbldap_state *ldap_state, const char *extension)
1685 {
1686 const char *attrs[] = { "supportedExtension", NULL };
1687 return smbldap_check_root_dse(ldap_state, attrs, extension);
1688 }
1689
1690 /*******************************************************************
1691 Check if LDAP-Server holds a given namingContext
1692 ********************************************************************/
1693
1694 BOOL smbldap_has_naming_context(struct smbldap_state *ldap_state, const char *naming_context)
1695 {
1696 const char *attrs[] = { "namingContexts", NULL };
1697 return smbldap_check_root_dse(ldap_state, attrs, naming_context);
1698 }