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r19801: grabbing minor changes (some missing pieces from jmcd's SAMR work as well)
[Samba.git] / source / lib / smbldap.c
blob85dd5fa3d67c15877f57e35359bb47e14f6e4880
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_SN, "sn" },
56 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
57 { LDAP_ATTR_HOME_PATH, "smbHome" },
58 { LDAP_ATTR_HOME_DRIVE, "homeDrive" },
59 { LDAP_ATTR_LOGON_SCRIPT, "scriptPath" },
60 { LDAP_ATTR_PROFILE_PATH, "profilePath" },
61 { LDAP_ATTR_DESC, "description" },
62 { LDAP_ATTR_USER_WKS, "userWorkstations"},
63 { LDAP_ATTR_USER_RID, "rid" },
64 { LDAP_ATTR_PRIMARY_GROUP_RID, "primaryGroupID"},
65 { LDAP_ATTR_LMPW, "lmPassword" },
66 { LDAP_ATTR_NTPW, "ntPassword" },
67 { LDAP_ATTR_DOMAIN, "domain" },
68 { LDAP_ATTR_OBJCLASS, "objectClass" },
69 { LDAP_ATTR_ACB_INFO, "acctFlags" },
70 { LDAP_ATTR_MOD_TIMESTAMP, "modifyTimestamp" },
71 { LDAP_ATTR_LIST_END, NULL }
72 };
73
74 ATTRIB_MAP_ENTRY attrib_map_to_delete_v22[] = {
75 { LDAP_ATTR_PWD_LAST_SET, "pwdLastSet" },
76 { LDAP_ATTR_PWD_CAN_CHANGE, "pwdCanChange" },
77 { LDAP_ATTR_PWD_MUST_CHANGE, "pwdMustChange" },
78 { LDAP_ATTR_LOGON_TIME, "logonTime" },
79 { LDAP_ATTR_LOGOFF_TIME, "logoffTime" },
80 { LDAP_ATTR_KICKOFF_TIME, "kickoffTime" },
81 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
82 { LDAP_ATTR_HOME_PATH, "smbHome" },
83 { LDAP_ATTR_HOME_DRIVE, "homeDrives" },
84 { LDAP_ATTR_LOGON_SCRIPT, "scriptPath" },
85 { LDAP_ATTR_PROFILE_PATH, "profilePath" },
86 { LDAP_ATTR_USER_WKS, "userWorkstations"},
87 { LDAP_ATTR_USER_RID, "rid" },
88 { LDAP_ATTR_PRIMARY_GROUP_RID, "primaryGroupID"},
89 { LDAP_ATTR_LMPW, "lmPassword" },
90 { LDAP_ATTR_NTPW, "ntPassword" },
91 { LDAP_ATTR_DOMAIN, "domain" },
92 { LDAP_ATTR_ACB_INFO, "acctFlags" },
93 { LDAP_ATTR_LIST_END, NULL }
94 };
95
96 /* attributes used by Samba 3.0's sambaSamAccount */
97
98 ATTRIB_MAP_ENTRY attrib_map_v30[] = {
99 { LDAP_ATTR_UID, "uid" },
100 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
101 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
102 { LDAP_ATTR_UNIX_HOME, "homeDirectory" },
103 { LDAP_ATTR_PWD_LAST_SET, "sambaPwdLastSet" },
104 { LDAP_ATTR_PWD_CAN_CHANGE, "sambaPwdCanChange" },
105 { LDAP_ATTR_PWD_MUST_CHANGE, "sambaPwdMustChange" },
106 { LDAP_ATTR_LOGON_TIME, "sambaLogonTime" },
107 { LDAP_ATTR_LOGOFF_TIME, "sambaLogoffTime" },
108 { LDAP_ATTR_KICKOFF_TIME, "sambaKickoffTime" },
109 { LDAP_ATTR_CN, "cn" },
110 { LDAP_ATTR_SN, "sn" },
111 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
112 { LDAP_ATTR_HOME_DRIVE, "sambaHomeDrive" },
113 { LDAP_ATTR_HOME_PATH, "sambaHomePath" },
114 { LDAP_ATTR_LOGON_SCRIPT, "sambaLogonScript" },
115 { LDAP_ATTR_PROFILE_PATH, "sambaProfilePath" },
116 { LDAP_ATTR_DESC, "description" },
117 { LDAP_ATTR_USER_WKS, "sambaUserWorkstations" },
118 { LDAP_ATTR_USER_SID, LDAP_ATTRIBUTE_SID },
119 { LDAP_ATTR_PRIMARY_GROUP_SID, "sambaPrimaryGroupSID" },
120 { LDAP_ATTR_LMPW, "sambaLMPassword" },
121 { LDAP_ATTR_NTPW, "sambaNTPassword" },
122 { LDAP_ATTR_DOMAIN, "sambaDomainName" },
123 { LDAP_ATTR_OBJCLASS, "objectClass" },
124 { LDAP_ATTR_ACB_INFO, "sambaAcctFlags" },
125 { LDAP_ATTR_MUNGED_DIAL, "sambaMungedDial" },
126 { LDAP_ATTR_BAD_PASSWORD_COUNT, "sambaBadPasswordCount" },
127 { LDAP_ATTR_BAD_PASSWORD_TIME, "sambaBadPasswordTime" },
128 { LDAP_ATTR_PWD_HISTORY, "sambaPasswordHistory" },
129 { LDAP_ATTR_MOD_TIMESTAMP, "modifyTimestamp" },
130 { LDAP_ATTR_LOGON_HOURS, "sambaLogonHours" },
131 { LDAP_ATTR_LIST_END, NULL }
132 };
133
134 ATTRIB_MAP_ENTRY attrib_map_to_delete_v30[] = {
135 { LDAP_ATTR_PWD_LAST_SET, "sambaPwdLastSet" },
136 { LDAP_ATTR_PWD_CAN_CHANGE, "sambaPwdCanChange" },
137 { LDAP_ATTR_PWD_MUST_CHANGE, "sambaPwdMustChange" },
138 { LDAP_ATTR_LOGON_TIME, "sambaLogonTime" },
139 { LDAP_ATTR_LOGOFF_TIME, "sambaLogoffTime" },
140 { LDAP_ATTR_KICKOFF_TIME, "sambaKickoffTime" },
141 { LDAP_ATTR_HOME_DRIVE, "sambaHomeDrive" },
142 { LDAP_ATTR_HOME_PATH, "sambaHomePath" },
143 { LDAP_ATTR_LOGON_SCRIPT, "sambaLogonScript" },
144 { LDAP_ATTR_PROFILE_PATH, "sambaProfilePath" },
145 { LDAP_ATTR_USER_WKS, "sambaUserWorkstations" },
146 { LDAP_ATTR_USER_SID, LDAP_ATTRIBUTE_SID },
147 { LDAP_ATTR_PRIMARY_GROUP_SID, "sambaPrimaryGroupSID" },
148 { LDAP_ATTR_LMPW, "sambaLMPassword" },
149 { LDAP_ATTR_NTPW, "sambaNTPassword" },
150 { LDAP_ATTR_DOMAIN, "sambaDomainName" },
151 { LDAP_ATTR_ACB_INFO, "sambaAcctFlags" },
152 { LDAP_ATTR_MUNGED_DIAL, "sambaMungedDial" },
153 { LDAP_ATTR_BAD_PASSWORD_COUNT, "sambaBadPasswordCount" },
154 { LDAP_ATTR_BAD_PASSWORD_TIME, "sambaBadPasswordTime" },
155 { LDAP_ATTR_PWD_HISTORY, "sambaPasswordHistory" },
156 { LDAP_ATTR_LOGON_HOURS, "sambaLogonHours" },
157 { LDAP_ATTR_LIST_END, NULL }
158 };
159
160 /* attributes used for allocating RIDs */
161
162 ATTRIB_MAP_ENTRY dominfo_attr_list[] = {
163 { LDAP_ATTR_DOMAIN, "sambaDomainName" },
164 { LDAP_ATTR_NEXT_RID, "sambaNextRid" },
165 { LDAP_ATTR_NEXT_USERRID, "sambaNextUserRid" },
166 { LDAP_ATTR_NEXT_GROUPRID, "sambaNextGroupRid" },
167 { LDAP_ATTR_DOM_SID, LDAP_ATTRIBUTE_SID },
168 { LDAP_ATTR_ALGORITHMIC_RID_BASE,"sambaAlgorithmicRidBase"},
169 { LDAP_ATTR_OBJCLASS, "objectClass" },
170 { LDAP_ATTR_LIST_END, NULL },
171 };
172
173 /* Samba 3.0 group mapping attributes */
174
175 ATTRIB_MAP_ENTRY groupmap_attr_list[] = {
176 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
177 { LDAP_ATTR_GROUP_SID, LDAP_ATTRIBUTE_SID },
178 { LDAP_ATTR_GROUP_TYPE, "sambaGroupType" },
179 { LDAP_ATTR_SID_LIST, "sambaSIDList" },
180 { LDAP_ATTR_DESC, "description" },
181 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
182 { LDAP_ATTR_CN, "cn" },
183 { LDAP_ATTR_OBJCLASS, "objectClass" },
184 { LDAP_ATTR_LIST_END, NULL }
185 };
186
187 ATTRIB_MAP_ENTRY groupmap_attr_list_to_delete[] = {
188 { LDAP_ATTR_GROUP_SID, LDAP_ATTRIBUTE_SID },
189 { LDAP_ATTR_GROUP_TYPE, "sambaGroupType" },
190 { LDAP_ATTR_DESC, "description" },
191 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
192 { LDAP_ATTR_SID_LIST, "sambaSIDList" },
193 { LDAP_ATTR_LIST_END, NULL }
194 };
195
196 /* idmap_ldap sambaUnixIdPool */
197
198 ATTRIB_MAP_ENTRY idpool_attr_list[] = {
199 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
200 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
201 { LDAP_ATTR_OBJCLASS, "objectClass" },
202 { LDAP_ATTR_LIST_END, NULL }
203 };
204
205 ATTRIB_MAP_ENTRY sidmap_attr_list[] = {
206 { LDAP_ATTR_SID, LDAP_ATTRIBUTE_SID },
207 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
208 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
209 { LDAP_ATTR_OBJCLASS, "objectClass" },
210 { LDAP_ATTR_LIST_END, NULL }
211 };
212
213 /**********************************************************************
214 perform a simple table lookup and return the attribute name
215 **********************************************************************/
216
217 const char* get_attr_key2string( ATTRIB_MAP_ENTRY table[], int key )
218 {
219 int i = 0;
220
221 while ( table[i].attrib != LDAP_ATTR_LIST_END ) {
222 if ( table[i].attrib == key )
223 return table[i].name;
224 i++;
225 }
226
227 return NULL;
228 }
229
230
231 /**********************************************************************
232 Return the list of attribute names from a mapping table
233 **********************************************************************/
234
235 const char** get_attr_list( TALLOC_CTX *mem_ctx, ATTRIB_MAP_ENTRY table[] )
236 {
237 const char **names;
238 int i = 0;
239
240 while ( table[i].attrib != LDAP_ATTR_LIST_END )
241 i++;
242 i++;
243
244 names = TALLOC_ARRAY( mem_ctx, const char*, i );
245 if ( !names ) {
246 DEBUG(0,("get_attr_list: out of memory\n"));
247 return NULL;
248 }
249
250 i = 0;
251 while ( table[i].attrib != LDAP_ATTR_LIST_END ) {
252 names[i] = talloc_strdup( names, table[i].name );
253 i++;
254 }
255 names[i] = NULL;
256
257 return names;
258 }
259
260 /*******************************************************************
261 Search an attribute and return the first value found.
262 ******************************************************************/
263
264 BOOL smbldap_get_single_attribute (LDAP * ldap_struct, LDAPMessage * entry,
265 const char *attribute, char *value,
266 int max_len)
267 {
268 char **values;
269
270 if ( !attribute )
271 return False;
272
273 value[0] = '\0';
274
275 if ((values = ldap_get_values (ldap_struct, entry, attribute)) == NULL) {
276 DEBUG (10, ("smbldap_get_single_attribute: [%s] = [<does not exist>]\n", attribute));
277
278 return False;
279 }
280
281 if (convert_string(CH_UTF8, CH_UNIX,values[0], -1, value, max_len, False) == (size_t)-1) {
282 DEBUG(1, ("smbldap_get_single_attribute: string conversion of [%s] = [%s] failed!\n",
283 attribute, values[0]));
284 ldap_value_free(values);
285 return False;
286 }
287
288 ldap_value_free(values);
289 #ifdef DEBUG_PASSWORDS
290 DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n", attribute, value));
291 #endif
292 return True;
293 }
294
295 BOOL smbldap_get_single_pstring (LDAP * ldap_struct, LDAPMessage * entry,
296 const char *attribute, pstring value)
297 {
298 return smbldap_get_single_attribute(ldap_struct, entry,
299 attribute, value,
300 sizeof(pstring));
301 }
302
303 char * smbldap_talloc_single_attribute(LDAP *ldap_struct, LDAPMessage *entry,
304 const char *attribute,
305 TALLOC_CTX *mem_ctx)
306 {
307 char **values;
308 char *result;
309
310 if (attribute == NULL) {
311 return NULL;
312 }
313
314 values = ldap_get_values(ldap_struct, entry, attribute);
315
316 if (values == NULL) {
317 DEBUG(10, ("attribute %s does not exist\n", attribute));
318 return NULL;
319 }
320
321 if (ldap_count_values(values) != 1) {
322 DEBUG(10, ("attribute %s has %d values, expected only one\n",
323 attribute, ldap_count_values(values)));
324 ldap_value_free(values);
325 return NULL;
326 }
327
328 if (pull_utf8_talloc(mem_ctx, &result, values[0]) == (size_t)-1) {
329 DEBUG(10, ("pull_utf8_talloc failed\n"));
330 ldap_value_free(values);
331 return NULL;
332 }
333
334 ldap_value_free(values);
335
336 #ifdef DEBUG_PASSWORDS
337 DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n",
338 attribute, result));
339 #endif
340 return result;
341 }
342
343 static int ldapmsg_destructor(LDAPMessage **result) {
344 ldap_msgfree(*result);
345 return 0;
346 }
347
348 void talloc_autofree_ldapmsg(TALLOC_CTX *mem_ctx, LDAPMessage *result)
349 {
350 LDAPMessage **handle;
351
352 if (result == NULL) {
353 return;
354 }
355
356 handle = TALLOC_P(mem_ctx, LDAPMessage *);
357 SMB_ASSERT(handle != NULL);
358
359 *handle = result;
360 talloc_set_destructor(handle, ldapmsg_destructor);
361 }
362
363 static int ldapmod_destructor(LDAPMod ***mod) {
364 ldap_mods_free(*mod, 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
576 if ((tmp_ldap_state = smbldap_find_state(ld))) {
577 SMB_ASSERT(tmp_ldap_state == smbldap_state);
578 return;
579 }
580
581 t = SMB_XMALLOC_P(struct smbldap_state_lookup);
582 ZERO_STRUCTP(t);
583
584 DLIST_ADD_END(smbldap_state_lookup_list, t, struct smbldap_state_lookup *);
585 t->ld = ld;
586 t->smbldap_state = smbldap_state;
587 }
588
589 /********************************************************************
590 start TLS on an existing LDAP connection
591 *******************************************************************/
592
593 int smb_ldap_start_tls(LDAP *ldap_struct, int version)
594 {
595 int rc;
596
597 if (lp_ldap_ssl() != LDAP_SSL_START_TLS) {
598 return LDAP_SUCCESS;
599 }
600
601 #ifdef LDAP_OPT_X_TLS
602 if (version != LDAP_VERSION3) {
603 DEBUG(0, ("Need LDAPv3 for Start TLS\n"));
604 return LDAP_OPERATIONS_ERROR;
605 }
606
607 if ((rc = ldap_start_tls_s (ldap_struct, NULL, NULL)) != LDAP_SUCCESS) {
608 DEBUG(0,("Failed to issue the StartTLS instruction: %s\n",
609 ldap_err2string(rc)));
610 return rc;
611 }
612
613 DEBUG (3, ("StartTLS issued: using a TLS connection\n"));
614 return LDAP_SUCCESS;
615 #else
616 DEBUG(0,("StartTLS not supported by LDAP client libraries!\n"));
617 return LDAP_OPERATIONS_ERROR;
618 #endif
619 }
620
621 /********************************************************************
622 setup a connection to the LDAP server based on a uri
623 *******************************************************************/
624
625 int smb_ldap_setup_conn(LDAP **ldap_struct, const char *uri)
626 {
627 int rc;
628
629 DEBUG(10, ("smb_ldap_setup_connection: %s\n", uri));
630
631 #ifdef HAVE_LDAP_INITIALIZE
632
633 rc = ldap_initialize(ldap_struct, uri);
634 if (rc) {
635 DEBUG(0, ("ldap_initialize: %s\n", ldap_err2string(rc)));
636 }
637
638 return rc;
639 #else
640
641 /* Parse the string manually */
642
643 {
644 int port = 0;
645 fstring protocol;
646 fstring host;
647 SMB_ASSERT(sizeof(protocol)>10 && sizeof(host)>254);
648
649
650 /* skip leading "URL:" (if any) */
651 if ( strnequal( uri, "URL:", 4 ) ) {
652 uri += 4;
653 }
654
655 sscanf(uri, "%10[^:]://%254[^:/]:%d", protocol, host, &port);
656
657 if (port == 0) {
658 if (strequal(protocol, "ldap")) {
659 port = LDAP_PORT;
660 } else if (strequal(protocol, "ldaps")) {
661 port = LDAPS_PORT;
662 } else {
663 DEBUG(0, ("unrecognised protocol (%s)!\n", protocol));
664 }
665 }
666
667 if ((*ldap_struct = ldap_init(host, port)) == NULL) {
668 DEBUG(0, ("ldap_init failed !\n"));
669 return LDAP_OPERATIONS_ERROR;
670 }
671
672 if (strequal(protocol, "ldaps")) {
673 #ifdef LDAP_OPT_X_TLS
674 int tls = LDAP_OPT_X_TLS_HARD;
675 if (ldap_set_option (*ldap_struct, LDAP_OPT_X_TLS, &tls) != LDAP_SUCCESS)
676 {
677 DEBUG(0, ("Failed to setup a TLS session\n"));
678 }
679
680 DEBUG(3,("LDAPS option set...!\n"));
681 #else
682 DEBUG(0,("smbldap_open_connection: Secure connection not supported by LDAP client libraries!\n"));
683 return LDAP_OPERATIONS_ERROR;
684 #endif /* LDAP_OPT_X_TLS */
685 }
686
687 }
688 #endif /* HAVE_LDAP_INITIALIZE */
689 return LDAP_SUCCESS;
690 }
691
692 /********************************************************************
693 try to upgrade to Version 3 LDAP if not already, in either case return current
694 version
695 *******************************************************************/
696
697 int smb_ldap_upgrade_conn(LDAP *ldap_struct, int *new_version)
698 {
699 int version;
700 int rc;
701
702 /* assume the worst */
703 *new_version = LDAP_VERSION2;
704
705 rc = ldap_get_option(ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
706 if (rc) {
707 return rc;
708 }
709
710 if (version == LDAP_VERSION3) {
711 *new_version = LDAP_VERSION3;
712 return LDAP_SUCCESS;
713 }
714
715 /* try upgrade */
716 version = LDAP_VERSION3;
717 rc = ldap_set_option (ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
718 if (rc) {
719 return rc;
720 }
721
722 *new_version = LDAP_VERSION3;
723 return LDAP_SUCCESS;
724 }
725
726 /*******************************************************************
727 open a connection to the ldap server (just until the bind)
728 ******************************************************************/
729
730 int smb_ldap_setup_full_conn(LDAP **ldap_struct, const char *uri)
731 {
732 int rc, version;
733
734 rc = smb_ldap_setup_conn(ldap_struct, uri);
735 if (rc) {
736 return rc;
737 }
738
739 rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
740 if (rc) {
741 return rc;
742 }
743
744 rc = smb_ldap_start_tls(*ldap_struct, version);
745 if (rc) {
746 return rc;
747 }
748
749 return LDAP_SUCCESS;
750 }
751
752 /*******************************************************************
753 open a connection to the ldap server.
754 ******************************************************************/
755 static int smbldap_open_connection (struct smbldap_state *ldap_state)
756
757 {
758 int rc = LDAP_SUCCESS;
759 int version;
760 LDAP **ldap_struct = &ldap_state->ldap_struct;
761
762 rc = smb_ldap_setup_conn(ldap_struct, ldap_state->uri);
763 if (rc) {
764 return rc;
765 }
766
767 /* Store the LDAP pointer in a lookup list */
768
769 smbldap_store_state(*ldap_struct, ldap_state);
770
771 /* Upgrade to LDAPv3 if possible */
772
773 rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
774 if (rc) {
775 return rc;
776 }
777
778 /* Start TLS if required */
779
780 rc = smb_ldap_start_tls(*ldap_struct, version);
781 if (rc) {
782 return rc;
783 }
784
785 DEBUG(2, ("smbldap_open_connection: connection opened\n"));
786 return rc;
787 }
788
789 /*******************************************************************
790 a rebind function for authenticated referrals
791 This version takes a void* that we can shove useful stuff in :-)
792 ******************************************************************/
793 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
794 #else
795 static int rebindproc_with_state (LDAP * ld, char **whop, char **credp,
796 int *methodp, int freeit, void *arg)
797 {
798 struct smbldap_state *ldap_state = arg;
799
800 /** @TODO Should we be doing something to check what servers we rebind to?
801 Could we get a referral to a machine that we don't want to give our
802 username and password to? */
803
804 if (freeit) {
805 SAFE_FREE(*whop);
806 memset(*credp, '\0', strlen(*credp));
807 SAFE_FREE(*credp);
808 } else {
809 DEBUG(5,("rebind_proc_with_state: Rebinding as \"%s\"\n",
810 ldap_state->bind_dn));
811
812 *whop = SMB_STRDUP(ldap_state->bind_dn);
813 if (!*whop) {
814 return LDAP_NO_MEMORY;
815 }
816 *credp = SMB_STRDUP(ldap_state->bind_secret);
817 if (!*credp) {
818 SAFE_FREE(*whop);
819 return LDAP_NO_MEMORY;
820 }
821 *methodp = LDAP_AUTH_SIMPLE;
822 }
823
824 GetTimeOfDay(&ldap_state->last_rebind);
825
826 return 0;
827 }
828 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
829
830 /*******************************************************************
831 a rebind function for authenticated referrals
832 This version takes a void* that we can shove useful stuff in :-)
833 and actually does the connection.
834 ******************************************************************/
835 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
836 static int rebindproc_connect_with_state (LDAP *ldap_struct,
837 LDAP_CONST char *url,
838 ber_tag_t request,
839 ber_int_t msgid, void *arg)
840 {
841 struct smbldap_state *ldap_state =
842 (struct smbldap_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", (unsigned int)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 #ifdef HAVE_LDAP_SET_REBIND_PROC
948 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
949 # if LDAP_SET_REBIND_PROC_ARGS == 2
950 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect);
951 # endif
952 # if LDAP_SET_REBIND_PROC_ARGS == 3
953 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect_with_state, (void *)ldap_state);
954 # endif
955 #else /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
956 # if LDAP_SET_REBIND_PROC_ARGS == 2
957 ldap_set_rebind_proc(ldap_struct, &rebindproc);
958 # endif
959 # if LDAP_SET_REBIND_PROC_ARGS == 3
960 ldap_set_rebind_proc(ldap_struct, &rebindproc_with_state, (void *)ldap_state);
961 # endif
962 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
963 #endif
964
965 rc = ldap_simple_bind_s(ldap_struct, ldap_dn, ldap_secret);
966
967 if (rc != LDAP_SUCCESS) {
968 char *ld_error = NULL;
969 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
970 &ld_error);
971 DEBUG(ldap_state->num_failures ? 2 : 0,
972 ("failed to bind to server %s with dn=\"%s\" Error: %s\n\t%s\n",
973 ldap_state->uri,
974 ldap_dn ? ldap_dn : "(unknown)", ldap_err2string(rc),
975 ld_error ? ld_error : "(unknown)"));
976 SAFE_FREE(ld_error);
977 ldap_state->num_failures++;
978 return rc;
979 }
980
981 ldap_state->num_failures = 0;
982 ldap_state->paged_results = False;
983
984 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
985
986 if (smbldap_has_control(ldap_state->ldap_struct, ADS_PAGE_CTL_OID) && version == 3) {
987 ldap_state->paged_results = True;
988 }
989
990 DEBUG(3, ("ldap_connect_system: succesful connection to the LDAP server\n"));
991 DEBUGADD(10, ("ldap_connect_system: LDAP server %s support paged results\n",
992 ldap_state->paged_results ? "does" : "does not"));
993 return rc;
994 }
995
996 /**********************************************************************
997 Connect to LDAP server (called before every ldap operation)
998 *********************************************************************/
999 static int smbldap_open(struct smbldap_state *ldap_state)
1000 {
1001 int rc, opt_rc;
1002 BOOL reopen = False;
1003 SMB_ASSERT(ldap_state);
1004
1005 #ifndef NO_LDAP_SECURITY
1006 if (geteuid() != 0) {
1007 DEBUG(0, ("smbldap_open: cannot access LDAP when not root..\n"));
1008 return LDAP_INSUFFICIENT_ACCESS;
1009 }
1010 #endif
1011
1012 if ((ldap_state->ldap_struct != NULL) && ((ldap_state->last_ping + SMBLDAP_DONT_PING_TIME) < time(NULL))) {
1013
1014 #ifdef HAVE_UNIXSOCKET
1015 struct sockaddr_un addr;
1016 #else
1017 struct sockaddr addr;
1018 #endif
1019 socklen_t len = sizeof(addr);
1020 int sd;
1021
1022 opt_rc = ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_DESC, &sd);
1023 if (opt_rc == 0 && (getpeername(sd, (struct sockaddr *) &addr, &len)) < 0 )
1024 reopen = True;
1025
1026 #ifdef HAVE_UNIXSOCKET
1027 if (opt_rc == 0 && addr.sun_family == AF_UNIX)
1028 reopen = True;
1029 #endif
1030 if (reopen) {
1031 /* the other end has died. reopen. */
1032 ldap_unbind(ldap_state->ldap_struct);
1033 ldap_state->ldap_struct = NULL;
1034 ldap_state->last_ping = (time_t)0;
1035 } else {
1036 ldap_state->last_ping = time(NULL);
1037 }
1038 }
1039
1040 if (ldap_state->ldap_struct != NULL) {
1041 DEBUG(11,("smbldap_open: already connected to the LDAP server\n"));
1042 return LDAP_SUCCESS;
1043 }
1044
1045 if ((rc = smbldap_open_connection(ldap_state))) {
1046 return rc;
1047 }
1048
1049 if ((rc = smbldap_connect_system(ldap_state, ldap_state->ldap_struct))) {
1050 ldap_unbind(ldap_state->ldap_struct);
1051 ldap_state->ldap_struct = NULL;
1052 return rc;
1053 }
1054
1055
1056 ldap_state->last_ping = time(NULL);
1057 ldap_state->pid = sys_getpid();
1058 DEBUG(4,("The LDAP server is succesfully connected\n"));
1059
1060 return LDAP_SUCCESS;
1061 }
1062
1063 /**********************************************************************
1064 Disconnect from LDAP server
1065 *********************************************************************/
1066 static NTSTATUS smbldap_close(struct smbldap_state *ldap_state)
1067 {
1068 if (!ldap_state)
1069 return NT_STATUS_INVALID_PARAMETER;
1070
1071 if (ldap_state->ldap_struct != NULL) {
1072 ldap_unbind(ldap_state->ldap_struct);
1073 ldap_state->ldap_struct = NULL;
1074 }
1075
1076 smbldap_delete_state(ldap_state);
1077
1078 DEBUG(5,("The connection to the LDAP server was closed\n"));
1079 /* maybe free the results here --metze */
1080
1081
1082
1083 return NT_STATUS_OK;
1084 }
1085
1086 static BOOL got_alarm;
1087
1088 static void (*old_handler)(int);
1089
1090 static void gotalarm_sig(int dummy)
1091 {
1092 got_alarm = True;
1093 }
1094
1095 static int another_ldap_try(struct smbldap_state *ldap_state, int *rc,
1096 int *attempts, time_t endtime)
1097 {
1098 time_t now = time(NULL);
1099 int open_rc = LDAP_SERVER_DOWN;
1100
1101 if (*rc != LDAP_SERVER_DOWN)
1102 goto no_next;
1103
1104 if (now >= endtime) {
1105 smbldap_close(ldap_state);
1106 *rc = LDAP_TIMEOUT;
1107 goto no_next;
1108 }
1109
1110 if (*attempts == 0) {
1111 got_alarm = False;
1112 old_handler = CatchSignal(SIGALRM, gotalarm_sig);
1113 alarm(endtime - now);
1114
1115 if (ldap_state->pid != sys_getpid())
1116 smbldap_close(ldap_state);
1117 }
1118
1119 while (1) {
1120
1121 if (*attempts != 0)
1122 smb_msleep(1000);
1123
1124 *attempts += 1;
1125
1126 open_rc = smbldap_open(ldap_state);
1127
1128 if (open_rc == LDAP_SUCCESS) {
1129 ldap_state->last_use = now;
1130 return True;
1131 }
1132
1133 if (open_rc == LDAP_INSUFFICIENT_ACCESS) {
1134 /* The fact that we are non-root or any other
1135 * access-denied condition will not change in the next
1136 * round of trying */
1137 *rc = open_rc;
1138 break;
1139 }
1140
1141 if (got_alarm) {
1142 *rc = LDAP_TIMEOUT;
1143 break;
1144 }
1145
1146 if (open_rc != LDAP_SUCCESS) {
1147 DEBUG(1, ("Connection to LDAP server failed for the "
1148 "%d try!\n", *attempts));
1149 }
1150 }
1151
1152 no_next:
1153 CatchSignal(SIGALRM, old_handler);
1154 alarm(0);
1155 ldap_state->last_use = now;
1156 return False;
1157 }
1158
1159 /*********************************************************************
1160 ********************************************************************/
1161
1162 static int smbldap_search_ext(struct smbldap_state *ldap_state,
1163 const char *base, int scope, const char *filter,
1164 const char *attrs[], int attrsonly,
1165 LDAPControl **sctrls, LDAPControl **cctrls,
1166 int sizelimit, LDAPMessage **res)
1167 {
1168 int rc = LDAP_SERVER_DOWN;
1169 int attempts = 0;
1170 char *utf8_filter;
1171 time_t endtime = time(NULL)+lp_ldap_timeout();
1172 struct timeval timeout;
1173
1174 SMB_ASSERT(ldap_state);
1175
1176 DEBUG(5,("smbldap_search_ext: base => [%s], filter => [%s], "
1177 "scope => [%d]\n", base, filter, scope));
1178
1179 if (ldap_state->last_rebind.tv_sec > 0) {
1180 struct timeval tval;
1181 SMB_BIG_INT tdiff = 0;
1182 int sleep_time = 0;
1183
1184 ZERO_STRUCT(tval);
1185 GetTimeOfDay(&tval);
1186
1187 tdiff = usec_time_diff(&tval, &ldap_state->last_rebind);
1188 tdiff /= 1000; /* Convert to milliseconds. */
1189
1190 sleep_time = lp_ldap_replication_sleep()-(int)tdiff;
1191 sleep_time = MIN(sleep_time, MAX_LDAP_REPLICATION_SLEEP_TIME);
1192
1193 if (sleep_time > 0) {
1194 /* we wait for the LDAP replication */
1195 DEBUG(5,("smbldap_search_ext: waiting %d milliseconds "
1196 "for LDAP replication.\n",sleep_time));
1197 smb_msleep(sleep_time);
1198 DEBUG(5,("smbldap_search_ext: go on!\n"));
1199 }
1200 ZERO_STRUCT(ldap_state->last_rebind);
1201 }
1202
1203 if (push_utf8_allocate(&utf8_filter, filter) == (size_t)-1) {
1204 return LDAP_NO_MEMORY;
1205 }
1206
1207 /* Setup timeout for the ldap_search_ext_s call - local and remote. */
1208 timeout.tv_sec = lp_ldap_timeout();
1209 timeout.tv_usec = 0;
1210
1211 /* Setup alarm timeout.... Do we need both of these ? JRA.
1212 * Yes, I think we do need both of these. The server timeout only
1213 * covers the case where the server's operation takes too long. It
1214 * does not cover the case where the request hangs on its way to the
1215 * server. The server side timeout is not strictly necessary, it's
1216 * just a bit more kind to the server. VL. */
1217
1218 got_alarm = 0;
1219 CatchSignal(SIGALRM, SIGNAL_CAST gotalarm_sig);
1220 alarm(lp_ldap_timeout());
1221 /* End setup timeout. */
1222
1223 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1224 rc = ldap_search_ext_s(ldap_state->ldap_struct, base, scope,
1225 utf8_filter,
1226 CONST_DISCARD(char **, attrs),
1227 attrsonly, sctrls, cctrls, &timeout,
1228 sizelimit, res);
1229 if (rc != LDAP_SUCCESS) {
1230 char *ld_error = NULL;
1231 ldap_get_option(ldap_state->ldap_struct,
1232 LDAP_OPT_ERROR_STRING, &ld_error);
1233 DEBUG(10,("Failed search for base: %s, error: %s "
1234 "(%s)\n", base, ldap_err2string(rc),
1235 ld_error ? ld_error : "unknown"));
1236 SAFE_FREE(ld_error);
1237 }
1238 }
1239
1240 SAFE_FREE(utf8_filter);
1241
1242 /* Teardown timeout. */
1243 CatchSignal(SIGALRM, SIGNAL_CAST SIG_IGN);
1244 alarm(0);
1245
1246 if (got_alarm != 0)
1247 return LDAP_TIMELIMIT_EXCEEDED;
1248
1249 return rc;
1250 }
1251
1252 int smbldap_search(struct smbldap_state *ldap_state,
1253 const char *base, int scope, const char *filter,
1254 const char *attrs[], int attrsonly,
1255 LDAPMessage **res)
1256 {
1257 return smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1258 attrsonly, NULL, NULL, LDAP_NO_LIMIT, res);
1259 }
1260
1261 int smbldap_search_paged(struct smbldap_state *ldap_state,
1262 const char *base, int scope, const char *filter,
1263 const char **attrs, int attrsonly, int pagesize,
1264 LDAPMessage **res, void **cookie)
1265 {
1266 LDAPControl pr;
1267 LDAPControl **rcontrols;
1268 LDAPControl *controls[2] = { NULL, NULL};
1269 BerElement *cookie_be = NULL;
1270 struct berval *cookie_bv = NULL;
1271 int tmp = 0, i, rc;
1272 BOOL critical = True;
1273
1274 *res = NULL;
1275
1276 DEBUG(3,("smbldap_search_paged: base => [%s], filter => [%s],"
1277 "scope => [%d], pagesize => [%d]\n",
1278 base, filter, scope, pagesize));
1279
1280 cookie_be = ber_alloc_t(LBER_USE_DER);
1281 if (cookie_be == NULL) {
1282 DEBUG(0,("smbldap_create_page_control: ber_alloc_t returns "
1283 "NULL\n"));
1284 return LDAP_NO_MEMORY;
1285 }
1286
1287 /* construct cookie */
1288 if (*cookie != NULL) {
1289 ber_printf(cookie_be, "{iO}", (ber_int_t) pagesize, *cookie);
1290 ber_bvfree((struct berval *)*cookie); /* don't need it from last time */
1291 *cookie = NULL;
1292 } else {
1293 ber_printf(cookie_be, "{io}", (ber_int_t) pagesize, "", 0);
1294 }
1295 ber_flatten(cookie_be, &cookie_bv);
1296
1297 pr.ldctl_oid = CONST_DISCARD(char *, ADS_PAGE_CTL_OID);
1298 pr.ldctl_iscritical = (char) critical;
1299 pr.ldctl_value.bv_len = cookie_bv->bv_len;
1300 pr.ldctl_value.bv_val = cookie_bv->bv_val;
1301
1302 controls[0] = &pr;
1303 controls[1] = NULL;
1304
1305 rc = smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1306 0, controls, NULL, LDAP_NO_LIMIT, res);
1307
1308 ber_free(cookie_be, 1);
1309 ber_bvfree(cookie_bv);
1310
1311 if (rc != 0) {
1312 DEBUG(3,("smbldap_search_paged: smbldap_search_ext(%s) "
1313 "failed with [%s]\n", filter, ldap_err2string(rc)));
1314 goto done;
1315 }
1316
1317 DEBUG(3,("smbldap_search_paged: search was successfull\n"));
1318
1319 rc = ldap_parse_result(ldap_state->ldap_struct, *res, NULL, NULL,
1320 NULL, NULL, &rcontrols, 0);
1321 if (rc != 0) {
1322 DEBUG(3,("smbldap_search_paged: ldap_parse_result failed " \
1323 "with [%s]\n", ldap_err2string(rc)));
1324 goto done;
1325 }
1326
1327 if (rcontrols == NULL)
1328 goto done;
1329
1330 for (i=0; rcontrols[i]; i++) {
1331
1332 if (strcmp(ADS_PAGE_CTL_OID, rcontrols[i]->ldctl_oid) != 0)
1333 continue;
1334
1335 cookie_be = ber_init(&rcontrols[i]->ldctl_value);
1336 ber_scanf(cookie_be,"{iO}", &tmp, &cookie_bv);
1337 /* the berval is the cookie, but must be freed when it is all
1338 done */
1339 if (cookie_bv->bv_len)
1340 *cookie=ber_bvdup(cookie_bv);
1341 else
1342 *cookie=NULL;
1343 ber_bvfree(cookie_bv);
1344 ber_free(cookie_be, 1);
1345 break;
1346 }
1347 ldap_controls_free(rcontrols);
1348 done:
1349 return rc;
1350 }
1351
1352 int smbldap_modify(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1353 {
1354 int rc = LDAP_SERVER_DOWN;
1355 int attempts = 0;
1356 char *utf8_dn;
1357 time_t endtime = time(NULL)+lp_ldap_timeout();
1358
1359 SMB_ASSERT(ldap_state);
1360
1361 DEBUG(5,("smbldap_modify: dn => [%s]\n", dn ));
1362
1363 if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1364 return LDAP_NO_MEMORY;
1365 }
1366
1367 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1368 rc = ldap_modify_s(ldap_state->ldap_struct, utf8_dn, attrs);
1369 if (rc != LDAP_SUCCESS) {
1370 char *ld_error = NULL;
1371 ldap_get_option(ldap_state->ldap_struct,
1372 LDAP_OPT_ERROR_STRING, &ld_error);
1373 DEBUG(10,("Failed to modify dn: %s, error: %s "
1374 "(%s)\n", dn, ldap_err2string(rc),
1375 ld_error ? ld_error : "unknown"));
1376 SAFE_FREE(ld_error);
1377 }
1378 }
1379
1380 SAFE_FREE(utf8_dn);
1381 return rc;
1382 }
1383
1384 int smbldap_add(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1385 {
1386 int rc = LDAP_SERVER_DOWN;
1387 int attempts = 0;
1388 char *utf8_dn;
1389 time_t endtime = time(NULL)+lp_ldap_timeout();
1390
1391 SMB_ASSERT(ldap_state);
1392
1393 DEBUG(5,("smbldap_add: dn => [%s]\n", dn ));
1394
1395 if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1396 return LDAP_NO_MEMORY;
1397 }
1398
1399 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1400 rc = ldap_add_s(ldap_state->ldap_struct, utf8_dn, attrs);
1401 if (rc != LDAP_SUCCESS) {
1402 char *ld_error = NULL;
1403 ldap_get_option(ldap_state->ldap_struct,
1404 LDAP_OPT_ERROR_STRING, &ld_error);
1405 DEBUG(10,("Failed to add dn: %s, error: %s "
1406 "(%s)\n", dn, ldap_err2string(rc),
1407 ld_error ? ld_error : "unknown"));
1408 SAFE_FREE(ld_error);
1409 }
1410 }
1411
1412 SAFE_FREE(utf8_dn);
1413 return rc;
1414 }
1415
1416 int smbldap_delete(struct smbldap_state *ldap_state, const char *dn)
1417 {
1418 int rc = LDAP_SERVER_DOWN;
1419 int attempts = 0;
1420 char *utf8_dn;
1421 time_t endtime = time(NULL)+lp_ldap_timeout();
1422
1423 SMB_ASSERT(ldap_state);
1424
1425 DEBUG(5,("smbldap_delete: dn => [%s]\n", dn ));
1426
1427 if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1428 return LDAP_NO_MEMORY;
1429 }
1430
1431 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1432 rc = ldap_delete_s(ldap_state->ldap_struct, utf8_dn);
1433 if (rc != LDAP_SUCCESS) {
1434 char *ld_error = NULL;
1435 ldap_get_option(ldap_state->ldap_struct,
1436 LDAP_OPT_ERROR_STRING, &ld_error);
1437 DEBUG(10,("Failed to delete dn: %s, error: %s "
1438 "(%s)\n", dn, ldap_err2string(rc),
1439 ld_error ? ld_error : "unknown"));
1440 SAFE_FREE(ld_error);
1441 }
1442 }
1443
1444 SAFE_FREE(utf8_dn);
1445 return rc;
1446 }
1447
1448 int smbldap_extended_operation(struct smbldap_state *ldap_state,
1449 LDAP_CONST char *reqoid, struct berval *reqdata,
1450 LDAPControl **serverctrls, LDAPControl **clientctrls,
1451 char **retoidp, struct berval **retdatap)
1452 {
1453 int rc = LDAP_SERVER_DOWN;
1454 int attempts = 0;
1455 time_t endtime = time(NULL)+lp_ldap_timeout();
1456
1457 if (!ldap_state)
1458 return (-1);
1459
1460 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1461 rc = ldap_extended_operation_s(ldap_state->ldap_struct, reqoid,
1462 reqdata, serverctrls,
1463 clientctrls, retoidp, retdatap);
1464 if (rc != LDAP_SUCCESS) {
1465 char *ld_error = NULL;
1466 ldap_get_option(ldap_state->ldap_struct,
1467 LDAP_OPT_ERROR_STRING, &ld_error);
1468 DEBUG(10,("Extended operation failed with error: %s "
1469 "(%s)\n", ldap_err2string(rc),
1470 ld_error ? ld_error : "unknown"));
1471 SAFE_FREE(ld_error);
1472 }
1473 }
1474
1475 return rc;
1476 }
1477
1478 /*******************************************************************
1479 run the search by name.
1480 ******************************************************************/
1481 int smbldap_search_suffix (struct smbldap_state *ldap_state,
1482 const char *filter, const char **search_attr,
1483 LDAPMessage ** result)
1484 {
1485 return smbldap_search(ldap_state, lp_ldap_suffix(), LDAP_SCOPE_SUBTREE,
1486 filter, search_attr, 0, result);
1487 }
1488
1489 static void smbldap_idle_fn(void **data, time_t *interval, time_t now)
1490 {
1491 struct smbldap_state *state = (struct smbldap_state *)(*data);
1492
1493 if (state->ldap_struct == NULL) {
1494 DEBUG(10,("ldap connection not connected...\n"));
1495 return;
1496 }
1497
1498 if ((state->last_use+SMBLDAP_IDLE_TIME) > now) {
1499 DEBUG(10,("ldap connection not idle...\n"));
1500 return;
1501 }
1502
1503 DEBUG(7,("ldap connection idle...closing connection\n"));
1504 smbldap_close(state);
1505 }
1506
1507 /**********************************************************************
1508 Housekeeping
1509 *********************************************************************/
1510
1511 void smbldap_free_struct(struct smbldap_state **ldap_state)
1512 {
1513 smbldap_close(*ldap_state);
1514
1515 if ((*ldap_state)->bind_secret) {
1516 memset((*ldap_state)->bind_secret, '\0', strlen((*ldap_state)->bind_secret));
1517 }
1518
1519 SAFE_FREE((*ldap_state)->bind_dn);
1520 SAFE_FREE((*ldap_state)->bind_secret);
1521
1522 smb_unregister_idle_event((*ldap_state)->event_id);
1523
1524 *ldap_state = NULL;
1525
1526 /* No need to free any further, as it is talloc()ed */
1527 }
1528
1529
1530 /**********************************************************************
1531 Intitalise the 'general' ldap structures, on which ldap operations may be conducted
1532 *********************************************************************/
1533
1534 NTSTATUS smbldap_init(TALLOC_CTX *mem_ctx, const char *location, struct smbldap_state **smbldap_state)
1535 {
1536 *smbldap_state = TALLOC_ZERO_P(mem_ctx, struct smbldap_state);
1537 if (!*smbldap_state) {
1538 DEBUG(0, ("talloc() failed for ldapsam private_data!\n"));
1539 return NT_STATUS_NO_MEMORY;
1540 }
1541
1542 if (location) {
1543 (*smbldap_state)->uri = talloc_strdup(mem_ctx, location);
1544 } else {
1545 (*smbldap_state)->uri = "ldap://localhost";
1546 }
1547
1548 (*smbldap_state)->event_id =
1549 smb_register_idle_event(smbldap_idle_fn, (void *)(*smbldap_state),
1550 SMBLDAP_IDLE_TIME);
1551
1552 if ((*smbldap_state)->event_id == SMB_EVENT_ID_INVALID) {
1553 DEBUG(0,("Failed to register LDAP idle event!\n"));
1554 return NT_STATUS_INVALID_HANDLE;
1555 }
1556
1557 return NT_STATUS_OK;
1558 }
1559
1560 /*******************************************************************
1561 Return a copy of the DN for a LDAPMessage. Convert from utf8 to CH_UNIX.
1562 ********************************************************************/
1563 char *smbldap_get_dn(LDAP *ld, LDAPMessage *entry)
1564 {
1565 char *utf8_dn, *unix_dn;
1566
1567 utf8_dn = ldap_get_dn(ld, entry);
1568 if (!utf8_dn) {
1569 DEBUG (5, ("smbldap_get_dn: ldap_get_dn failed\n"));
1570 return NULL;
1571 }
1572 if (pull_utf8_allocate(&unix_dn, utf8_dn) == (size_t)-1) {
1573 DEBUG (0, ("smbldap_get_dn: String conversion failure utf8 [%s]\n", utf8_dn));
1574 return NULL;
1575 }
1576 ldap_memfree(utf8_dn);
1577 return unix_dn;
1578 }
1579
1580 const char *smbldap_talloc_dn(TALLOC_CTX *mem_ctx, LDAP *ld,
1581 LDAPMessage *entry)
1582 {
1583 char *utf8_dn, *unix_dn;
1584
1585 utf8_dn = ldap_get_dn(ld, entry);
1586 if (!utf8_dn) {
1587 DEBUG (5, ("smbldap_get_dn: ldap_get_dn failed\n"));
1588 return NULL;
1589 }
1590 if (pull_utf8_talloc(mem_ctx, &unix_dn, utf8_dn) == (size_t)-1) {
1591 DEBUG (0, ("smbldap_get_dn: String conversion failure utf8 "
1592 "[%s]\n", utf8_dn));
1593 return NULL;
1594 }
1595 ldap_memfree(utf8_dn);
1596 return unix_dn;
1597 }
1598
1599 /*******************************************************************
1600 Check if root-dse has a certain Control or Extension
1601 ********************************************************************/
1602
1603 static BOOL smbldap_check_root_dse(LDAP *ld, const char **attrs, const char *value)
1604 {
1605 LDAPMessage *msg = NULL;
1606 LDAPMessage *entry = NULL;
1607 char **values = NULL;
1608 int rc, num_result, num_values, i;
1609 BOOL result = False;
1610
1611 if (!attrs[0]) {
1612 DEBUG(3,("smbldap_check_root_dse: nothing to look for\n"));
1613 return False;
1614 }
1615
1616 if (!strequal(attrs[0], "supportedExtension") &&
1617 !strequal(attrs[0], "supportedControl") &&
1618 !strequal(attrs[0], "namingContexts")) {
1619 DEBUG(3,("smbldap_check_root_dse: no idea what to query root-dse for: %s ?\n", attrs[0]));
1620 return False;
1621 }
1622
1623 rc = ldap_search_s(ld, "", LDAP_SCOPE_BASE,
1624 "(objectclass=*)", CONST_DISCARD(char **, attrs), 0 , &msg);
1625
1626 if (rc != LDAP_SUCCESS) {
1627 DEBUG(3,("smbldap_check_root_dse: Could not search rootDSE\n"));
1628 return False;
1629 }
1630
1631 num_result = ldap_count_entries(ld, msg);
1632
1633 if (num_result != 1) {
1634 DEBUG(3,("smbldap_check_root_dse: Expected one rootDSE, got %d\n", num_result));
1635 goto done;
1636 }
1637
1638 entry = ldap_first_entry(ld, msg);
1639
1640 if (entry == NULL) {
1641 DEBUG(3,("smbldap_check_root_dse: Could not retrieve rootDSE\n"));
1642 goto done;
1643 }
1644
1645 values = ldap_get_values(ld, entry, attrs[0]);
1646
1647 if (values == NULL) {
1648 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not support any %s\n", attrs[0]));
1649 goto done;
1650 }
1651
1652 num_values = ldap_count_values(values);
1653
1654 if (num_values == 0) {
1655 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not have any %s\n", attrs[0]));
1656 goto done;
1657 }
1658
1659 for (i=0; i<num_values; i++) {
1660 if (strcmp(values[i], value) == 0)
1661 result = True;
1662 }
1663
1664
1665 done:
1666 if (values != NULL)
1667 ldap_value_free(values);
1668 if (msg != NULL)
1669 ldap_msgfree(msg);
1670
1671 return result;
1672
1673 }
1674
1675 /*******************************************************************
1676 Check if LDAP-Server supports a certain Control (OID in string format)
1677 ********************************************************************/
1678
1679 BOOL smbldap_has_control(LDAP *ld, const char *control)
1680 {
1681 const char *attrs[] = { "supportedControl", NULL };
1682 return smbldap_check_root_dse(ld, attrs, control);
1683 }
1684
1685 /*******************************************************************
1686 Check if LDAP-Server supports a certain Extension (OID in string format)
1687 ********************************************************************/
1688
1689 BOOL smbldap_has_extension(LDAP *ld, const char *extension)
1690 {
1691 const char *attrs[] = { "supportedExtension", NULL };
1692 return smbldap_check_root_dse(ld, attrs, extension);
1693 }
1694
1695 /*******************************************************************
1696 Check if LDAP-Server holds a given namingContext
1697 ********************************************************************/
1698
1699 BOOL smbldap_has_naming_context(LDAP *ld, const char *naming_context)
1700 {
1701 const char *attrs[] = { "namingContexts", NULL };
1702 return smbldap_check_root_dse(ld, attrs, naming_context);
1703 }
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