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create-tarball: Adapt script to changed directory structure.
[Samba/gbeck.git] / source3 / lib / smbldap.c
blob93494d6dadbcf616dd6b962661aa6a7f59f24c9d
1 /*
2 Unix SMB/CIFS implementation.
3 LDAP protocol helper functions for SAMBA
4 Copyright (C) Jean François Micouleau 1998
5 Copyright (C) Gerald Carter 2001-2003
6 Copyright (C) Shahms King 2001
7 Copyright (C) Andrew Bartlett 2002-2003
8 Copyright (C) Stefan (metze) Metzmacher 2002-2003
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
22
23 */
24
25 #include "includes.h"
26 #include "smbldap.h"
27
28 #ifndef LDAP_OPT_SUCCESS
29 #define LDAP_OPT_SUCCESS 0
30 #endif
31
32 /* Try not to hit the up or down server forever */
33
34 #define SMBLDAP_DONT_PING_TIME 10 /* ping only all 10 seconds */
35 #define SMBLDAP_NUM_RETRIES 8 /* retry only 8 times */
36
37 #define SMBLDAP_IDLE_TIME 150 /* After 2.5 minutes disconnect */
38
39
40 /* attributes used by Samba 2.2 */
41
42 ATTRIB_MAP_ENTRY attrib_map_v22[] = {
43 { LDAP_ATTR_UID, "uid" },
44 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
45 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
46 { LDAP_ATTR_UNIX_HOME, "homeDirectory" },
47 { LDAP_ATTR_PWD_LAST_SET, "pwdLastSet" },
48 { LDAP_ATTR_PWD_CAN_CHANGE, "pwdCanChange" },
49 { LDAP_ATTR_PWD_MUST_CHANGE, "pwdMustChange" },
50 { LDAP_ATTR_LOGON_TIME, "logonTime" },
51 { LDAP_ATTR_LOGOFF_TIME, "logoffTime" },
52 { LDAP_ATTR_KICKOFF_TIME, "kickoffTime" },
53 { LDAP_ATTR_CN, "cn" },
54 { LDAP_ATTR_SN, "sn" },
55 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
56 { LDAP_ATTR_HOME_PATH, "smbHome" },
57 { LDAP_ATTR_HOME_DRIVE, "homeDrive" },
58 { LDAP_ATTR_LOGON_SCRIPT, "scriptPath" },
59 { LDAP_ATTR_PROFILE_PATH, "profilePath" },
60 { LDAP_ATTR_DESC, "description" },
61 { LDAP_ATTR_USER_WKS, "userWorkstations"},
62 { LDAP_ATTR_USER_RID, "rid" },
63 { LDAP_ATTR_PRIMARY_GROUP_RID, "primaryGroupID"},
64 { LDAP_ATTR_LMPW, "lmPassword" },
65 { LDAP_ATTR_NTPW, "ntPassword" },
66 { LDAP_ATTR_DOMAIN, "domain" },
67 { LDAP_ATTR_OBJCLASS, "objectClass" },
68 { LDAP_ATTR_ACB_INFO, "acctFlags" },
69 { LDAP_ATTR_MOD_TIMESTAMP, "modifyTimestamp" },
70 { LDAP_ATTR_LIST_END, NULL }
71 };
72
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_SN, "sn" },
110 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
111 { LDAP_ATTR_HOME_DRIVE, "sambaHomeDrive" },
112 { LDAP_ATTR_HOME_PATH, "sambaHomePath" },
113 { LDAP_ATTR_LOGON_SCRIPT, "sambaLogonScript" },
114 { LDAP_ATTR_PROFILE_PATH, "sambaProfilePath" },
115 { LDAP_ATTR_DESC, "description" },
116 { LDAP_ATTR_USER_WKS, "sambaUserWorkstations" },
117 { LDAP_ATTR_USER_SID, LDAP_ATTRIBUTE_SID },
118 { LDAP_ATTR_PRIMARY_GROUP_SID, "sambaPrimaryGroupSID" },
119 { LDAP_ATTR_LMPW, "sambaLMPassword" },
120 { LDAP_ATTR_NTPW, "sambaNTPassword" },
121 { LDAP_ATTR_DOMAIN, "sambaDomainName" },
122 { LDAP_ATTR_OBJCLASS, "objectClass" },
123 { LDAP_ATTR_ACB_INFO, "sambaAcctFlags" },
124 { LDAP_ATTR_MUNGED_DIAL, "sambaMungedDial" },
125 { LDAP_ATTR_BAD_PASSWORD_COUNT, "sambaBadPasswordCount" },
126 { LDAP_ATTR_BAD_PASSWORD_TIME, "sambaBadPasswordTime" },
127 { LDAP_ATTR_PWD_HISTORY, "sambaPasswordHistory" },
128 { LDAP_ATTR_MOD_TIMESTAMP, "modifyTimestamp" },
129 { LDAP_ATTR_LOGON_HOURS, "sambaLogonHours" },
130 { LDAP_ATTR_LIST_END, NULL }
131 };
132
133 ATTRIB_MAP_ENTRY attrib_map_to_delete_v30[] = {
134 { LDAP_ATTR_PWD_LAST_SET, "sambaPwdLastSet" },
135 { LDAP_ATTR_PWD_CAN_CHANGE, "sambaPwdCanChange" },
136 { LDAP_ATTR_PWD_MUST_CHANGE, "sambaPwdMustChange" },
137 { LDAP_ATTR_LOGON_TIME, "sambaLogonTime" },
138 { LDAP_ATTR_LOGOFF_TIME, "sambaLogoffTime" },
139 { LDAP_ATTR_KICKOFF_TIME, "sambaKickoffTime" },
140 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
141 { LDAP_ATTR_HOME_DRIVE, "sambaHomeDrive" },
142 { LDAP_ATTR_HOME_PATH, "sambaHomePath" },
143 { LDAP_ATTR_LOGON_SCRIPT, "sambaLogonScript" },
144 { LDAP_ATTR_PROFILE_PATH, "sambaProfilePath" },
145 { LDAP_ATTR_USER_WKS, "sambaUserWorkstations" },
146 { LDAP_ATTR_USER_SID, LDAP_ATTRIBUTE_SID },
147 { LDAP_ATTR_PRIMARY_GROUP_SID, "sambaPrimaryGroupSID" },
148 { LDAP_ATTR_LMPW, "sambaLMPassword" },
149 { LDAP_ATTR_NTPW, "sambaNTPassword" },
150 { LDAP_ATTR_DOMAIN, "sambaDomainName" },
151 { LDAP_ATTR_ACB_INFO, "sambaAcctFlags" },
152 { LDAP_ATTR_MUNGED_DIAL, "sambaMungedDial" },
153 { LDAP_ATTR_BAD_PASSWORD_COUNT, "sambaBadPasswordCount" },
154 { LDAP_ATTR_BAD_PASSWORD_TIME, "sambaBadPasswordTime" },
155 { LDAP_ATTR_PWD_HISTORY, "sambaPasswordHistory" },
156 { LDAP_ATTR_LOGON_HOURS, "sambaLogonHours" },
157 { LDAP_ATTR_LIST_END, NULL }
158 };
159
160 /* attributes used for allocating RIDs */
161
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 char * smbldap_talloc_single_attribute(LDAP *ldap_struct, LDAPMessage *entry,
296 const char *attribute,
297 TALLOC_CTX *mem_ctx)
298 {
299 char **values;
300 char *result;
301 size_t converted_size;
302
303 if (attribute == NULL) {
304 return NULL;
305 }
306
307 values = ldap_get_values(ldap_struct, entry, attribute);
308
309 if (values == NULL) {
310 DEBUG(10, ("attribute %s does not exist\n", attribute));
311 return NULL;
312 }
313
314 if (ldap_count_values(values) != 1) {
315 DEBUG(10, ("attribute %s has %d values, expected only one\n",
316 attribute, ldap_count_values(values)));
317 ldap_value_free(values);
318 return NULL;
319 }
320
321 if (!pull_utf8_talloc(mem_ctx, &result, values[0], &converted_size)) {
322 DEBUG(10, ("pull_utf8_talloc failed\n"));
323 ldap_value_free(values);
324 return NULL;
325 }
326
327 ldap_value_free(values);
328
329 #ifdef DEBUG_PASSWORDS
330 DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n",
331 attribute, result));
332 #endif
333 return result;
334 }
335
336 static int ldapmsg_destructor(LDAPMessage **result) {
337 ldap_msgfree(*result);
338 return 0;
339 }
340
341 void talloc_autofree_ldapmsg(TALLOC_CTX *mem_ctx, LDAPMessage *result)
342 {
343 LDAPMessage **handle;
344
345 if (result == NULL) {
346 return;
347 }
348
349 handle = TALLOC_P(mem_ctx, LDAPMessage *);
350 SMB_ASSERT(handle != NULL);
351
352 *handle = result;
353 talloc_set_destructor(handle, ldapmsg_destructor);
354 }
355
356 static int ldapmod_destructor(LDAPMod ***mod) {
357 ldap_mods_free(*mod, True);
358 return 0;
359 }
360
361 void talloc_autofree_ldapmod(TALLOC_CTX *mem_ctx, LDAPMod **mod)
362 {
363 LDAPMod ***handle;
364
365 if (mod == NULL) {
366 return;
367 }
368
369 handle = TALLOC_P(mem_ctx, LDAPMod **);
370 SMB_ASSERT(handle != NULL);
371
372 *handle = mod;
373 talloc_set_destructor(handle, ldapmod_destructor);
374 }
375
376 /************************************************************************
377 Routine to manage the LDAPMod structure array
378 manage memory used by the array, by each struct, and values
379 ***********************************************************************/
380
381 void smbldap_set_mod (LDAPMod *** modlist, int modop, const char *attribute, const char *value)
382 {
383 LDAPMod **mods;
384 int i;
385 int j;
386
387 mods = *modlist;
388
389 /* sanity checks on the mod values */
390
391 if (attribute == NULL || *attribute == '\0') {
392 return;
393 }
394
395 #if 0 /* commented out after discussion with abartlet. Do not reenable.
396 left here so other do not re-add similar code --jerry */
397 if (value == NULL || *value == '\0')
398 return;
399 #endif
400
401 if (mods == NULL) {
402 mods = SMB_MALLOC_P(LDAPMod *);
403 if (mods == NULL) {
404 smb_panic("smbldap_set_mod: out of memory!");
405 /* notreached. */
406 }
407 mods[0] = NULL;
408 }
409
410 for (i = 0; mods[i] != NULL; ++i) {
411 if (mods[i]->mod_op == modop && strequal(mods[i]->mod_type, attribute))
412 break;
413 }
414
415 if (mods[i] == NULL) {
416 mods = SMB_REALLOC_ARRAY (mods, LDAPMod *, i + 2);
417 if (mods == NULL) {
418 smb_panic("smbldap_set_mod: out of memory!");
419 /* notreached. */
420 }
421 mods[i] = SMB_MALLOC_P(LDAPMod);
422 if (mods[i] == NULL) {
423 smb_panic("smbldap_set_mod: out of memory!");
424 /* notreached. */
425 }
426 mods[i]->mod_op = modop;
427 mods[i]->mod_values = NULL;
428 mods[i]->mod_type = SMB_STRDUP(attribute);
429 mods[i + 1] = NULL;
430 }
431
432 if (value != NULL) {
433 char *utf8_value = NULL;
434 size_t converted_size;
435
436 j = 0;
437 if (mods[i]->mod_values != NULL) {
438 for (; mods[i]->mod_values[j] != NULL; j++);
439 }
440 mods[i]->mod_values = SMB_REALLOC_ARRAY(mods[i]->mod_values, char *, j + 2);
441
442 if (mods[i]->mod_values == NULL) {
443 smb_panic("smbldap_set_mod: out of memory!");
444 /* notreached. */
445 }
446
447 if (!push_utf8_allocate(&utf8_value, value, &converted_size)) {
448 smb_panic("smbldap_set_mod: String conversion failure!");
449 /* notreached. */
450 }
451
452 mods[i]->mod_values[j] = utf8_value;
453
454 mods[i]->mod_values[j + 1] = NULL;
455 }
456 *modlist = mods;
457 }
458
459 /**********************************************************************
460 Set attribute to newval in LDAP, regardless of what value the
461 attribute had in LDAP before.
462 *********************************************************************/
463
464 void smbldap_make_mod(LDAP *ldap_struct, LDAPMessage *existing,
465 LDAPMod ***mods,
466 const char *attribute, const char *newval)
467 {
468 char oldval[2048]; /* current largest allowed value is mungeddial */
469 bool existed;
470
471 if (attribute == NULL) {
472 /* This can actually happen for ldapsam_compat where we for
473 * example don't have a password history */
474 return;
475 }
476
477 if (existing != NULL) {
478 existed = smbldap_get_single_attribute(ldap_struct, existing, attribute, oldval, sizeof(oldval));
479 } else {
480 existed = False;
481 *oldval = '\0';
482 }
483
484 /* all of our string attributes are case insensitive */
485
486 if (existed && newval && (StrCaseCmp(oldval, newval) == 0)) {
487
488 /* Believe it or not, but LDAP will deny a delete and
489 an add at the same time if the values are the
490 same... */
491 DEBUG(10,("smbldap_make_mod: attribute |%s| not changed.\n", attribute));
492 return;
493 }
494
495 if (existed) {
496 /* There has been no value before, so don't delete it.
497 * Here's a possible race: We might end up with
498 * duplicate attributes */
499 /* By deleting exactly the value we found in the entry this
500 * should be race-free in the sense that the LDAP-Server will
501 * deny the complete operation if somebody changed the
502 * attribute behind our back. */
503 /* This will also allow modifying single valued attributes
504 * in Novell NDS. In NDS you have to first remove attribute and then
505 * you could add new value */
506
507 DEBUG(10,("smbldap_make_mod: deleting attribute |%s| values |%s|\n", attribute, oldval));
508 smbldap_set_mod(mods, LDAP_MOD_DELETE, attribute, oldval);
509 }
510
511 /* Regardless of the real operation (add or modify)
512 we add the new value here. We rely on deleting
513 the old value, should it exist. */
514
515 if ((newval != NULL) && (strlen(newval) > 0)) {
516 DEBUG(10,("smbldap_make_mod: adding attribute |%s| value |%s|\n", attribute, newval));
517 smbldap_set_mod(mods, LDAP_MOD_ADD, attribute, newval);
518 }
519 }
520
521 /**********************************************************************
522 Some varients of the LDAP rebind code do not pass in the third 'arg'
523 pointer to a void*, so we try and work around it by assuming that the
524 value of the 'LDAP *' pointer is the same as the one we had passed in
525 **********************************************************************/
526
527 struct smbldap_state_lookup {
528 LDAP *ld;
529 struct smbldap_state *smbldap_state;
530 struct smbldap_state_lookup *prev, *next;
531 };
532
533 static struct smbldap_state_lookup *smbldap_state_lookup_list;
534
535 static struct smbldap_state *smbldap_find_state(LDAP *ld)
536 {
537 struct smbldap_state_lookup *t;
538
539 for (t = smbldap_state_lookup_list; t; t = t->next) {
540 if (t->ld == ld) {
541 return t->smbldap_state;
542 }
543 }
544 return NULL;
545 }
546
547 static void smbldap_delete_state(struct smbldap_state *smbldap_state)
548 {
549 struct smbldap_state_lookup *t;
550
551 for (t = smbldap_state_lookup_list; t; t = t->next) {
552 if (t->smbldap_state == smbldap_state) {
553 DLIST_REMOVE(smbldap_state_lookup_list, t);
554 SAFE_FREE(t);
555 return;
556 }
557 }
558 }
559
560 static void smbldap_store_state(LDAP *ld, struct smbldap_state *smbldap_state)
561 {
562 struct smbldap_state *tmp_ldap_state;
563 struct smbldap_state_lookup *t;
564
565 if ((tmp_ldap_state = smbldap_find_state(ld))) {
566 SMB_ASSERT(tmp_ldap_state == smbldap_state);
567 return;
568 }
569
570 t = SMB_XMALLOC_P(struct smbldap_state_lookup);
571 ZERO_STRUCTP(t);
572
573 DLIST_ADD_END(smbldap_state_lookup_list, t, struct smbldap_state_lookup *);
574 t->ld = ld;
575 t->smbldap_state = smbldap_state;
576 }
577
578 /********************************************************************
579 start TLS on an existing LDAP connection
580 *******************************************************************/
581
582 int smb_ldap_start_tls(LDAP *ldap_struct, int version)
583 {
584 int rc;
585
586 if (lp_ldap_ssl() != LDAP_SSL_START_TLS) {
587 return LDAP_SUCCESS;
588 }
589
590 #ifdef LDAP_OPT_X_TLS
591 if (version != LDAP_VERSION3) {
592 DEBUG(0, ("Need LDAPv3 for Start TLS\n"));
593 return LDAP_OPERATIONS_ERROR;
594 }
595
596 if ((rc = ldap_start_tls_s (ldap_struct, NULL, NULL)) != LDAP_SUCCESS) {
597 DEBUG(0,("Failed to issue the StartTLS instruction: %s\n",
598 ldap_err2string(rc)));
599 return rc;
600 }
601
602 DEBUG (3, ("StartTLS issued: using a TLS connection\n"));
603 return LDAP_SUCCESS;
604 #else
605 DEBUG(0,("StartTLS not supported by LDAP client libraries!\n"));
606 return LDAP_OPERATIONS_ERROR;
607 #endif
608 }
609
610 /********************************************************************
611 setup a connection to the LDAP server based on a uri
612 *******************************************************************/
613
614 int smb_ldap_setup_conn(LDAP **ldap_struct, const char *uri)
615 {
616 int rc;
617
618 DEBUG(10, ("smb_ldap_setup_connection: %s\n", uri));
619
620 #ifdef HAVE_LDAP_INITIALIZE
621
622 rc = ldap_initialize(ldap_struct, uri);
623 if (rc) {
624 DEBUG(0, ("ldap_initialize: %s\n", ldap_err2string(rc)));
625 }
626
627 return rc;
628 #else
629
630 /* Parse the string manually */
631
632 {
633 int port = 0;
634 fstring protocol;
635 fstring host;
636 SMB_ASSERT(sizeof(protocol)>10 && sizeof(host)>254);
637
638
639 /* skip leading "URL:" (if any) */
640 if ( strnequal( uri, "URL:", 4 ) ) {
641 uri += 4;
642 }
643
644 sscanf(uri, "%10[^:]://%254[^:/]:%d", protocol, host, &port);
645
646 if (port == 0) {
647 if (strequal(protocol, "ldap")) {
648 port = LDAP_PORT;
649 } else if (strequal(protocol, "ldaps")) {
650 port = LDAPS_PORT;
651 } else {
652 DEBUG(0, ("unrecognised protocol (%s)!\n", protocol));
653 }
654 }
655
656 if ((*ldap_struct = ldap_init(host, port)) == NULL) {
657 DEBUG(0, ("ldap_init failed !\n"));
658 return LDAP_OPERATIONS_ERROR;
659 }
660
661 if (strequal(protocol, "ldaps")) {
662 #ifdef LDAP_OPT_X_TLS
663 int tls = LDAP_OPT_X_TLS_HARD;
664 if (ldap_set_option (*ldap_struct, LDAP_OPT_X_TLS, &tls) != LDAP_SUCCESS)
665 {
666 DEBUG(0, ("Failed to setup a TLS session\n"));
667 }
668
669 DEBUG(3,("LDAPS option set...!\n"));
670 #else
671 DEBUG(0,("smbldap_open_connection: Secure connection not supported by LDAP client libraries!\n"));
672 return LDAP_OPERATIONS_ERROR;
673 #endif /* LDAP_OPT_X_TLS */
674 }
675 }
676 #endif /* HAVE_LDAP_INITIALIZE */
677
678
679 /* now set connection timeout */
680 #ifdef LDAP_X_OPT_CONNECT_TIMEOUT /* Netscape */
681 {
682 int ct = lp_ldap_connection_timeout()*1000;
683 rc = ldap_set_option(*ldap_struct, LDAP_X_OPT_CONNECT_TIMEOUT, &ct);
684 if (rc != LDAP_SUCCESS) {
685 DEBUG(0,("Failed to setup an ldap connection timeout %d: %s\n",
686 ct, ldap_err2string(rc)));
687 }
688 }
689 #elif defined (LDAP_OPT_NETWORK_TIMEOUT) /* OpenLDAP */
690 {
691 struct timeval ct;
692 ct.tv_usec = 0;
693 ct.tv_sec = lp_ldap_connection_timeout();
694 rc = ldap_set_option(*ldap_struct, LDAP_OPT_NETWORK_TIMEOUT, &ct);
695 if (rc != LDAP_SUCCESS) {
696 DEBUG(0,("Failed to setup an ldap connection timeout %d: %s\n",
697 (int)ct.tv_sec, ldap_err2string(rc)));
698 }
699 }
700 #endif
701
702 return LDAP_SUCCESS;
703 }
704
705 /********************************************************************
706 try to upgrade to Version 3 LDAP if not already, in either case return current
707 version
708 *******************************************************************/
709
710 int smb_ldap_upgrade_conn(LDAP *ldap_struct, int *new_version)
711 {
712 int version;
713 int rc;
714
715 /* assume the worst */
716 *new_version = LDAP_VERSION2;
717
718 rc = ldap_get_option(ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
719 if (rc) {
720 return rc;
721 }
722
723 if (version == LDAP_VERSION3) {
724 *new_version = LDAP_VERSION3;
725 return LDAP_SUCCESS;
726 }
727
728 /* try upgrade */
729 version = LDAP_VERSION3;
730 rc = ldap_set_option (ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
731 if (rc) {
732 return rc;
733 }
734
735 *new_version = LDAP_VERSION3;
736 return LDAP_SUCCESS;
737 }
738
739 /*******************************************************************
740 open a connection to the ldap server (just until the bind)
741 ******************************************************************/
742
743 int smb_ldap_setup_full_conn(LDAP **ldap_struct, const char *uri)
744 {
745 int rc, version;
746
747 rc = smb_ldap_setup_conn(ldap_struct, uri);
748 if (rc) {
749 return rc;
750 }
751
752 rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
753 if (rc) {
754 return rc;
755 }
756
757 rc = smb_ldap_start_tls(*ldap_struct, version);
758 if (rc) {
759 return rc;
760 }
761
762 return LDAP_SUCCESS;
763 }
764
765 /*******************************************************************
766 open a connection to the ldap server.
767 ******************************************************************/
768 static int smbldap_open_connection (struct smbldap_state *ldap_state)
769
770 {
771 int rc = LDAP_SUCCESS;
772 int version;
773 LDAP **ldap_struct = &ldap_state->ldap_struct;
774
775 rc = smb_ldap_setup_conn(ldap_struct, ldap_state->uri);
776 if (rc) {
777 return rc;
778 }
779
780 /* Store the LDAP pointer in a lookup list */
781
782 smbldap_store_state(*ldap_struct, ldap_state);
783
784 /* Upgrade to LDAPv3 if possible */
785
786 rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
787 if (rc) {
788 return rc;
789 }
790
791 /* Start TLS if required */
792
793 rc = smb_ldap_start_tls(*ldap_struct, version);
794 if (rc) {
795 return rc;
796 }
797
798 DEBUG(2, ("smbldap_open_connection: connection opened\n"));
799 return rc;
800 }
801
802 /*******************************************************************
803 a rebind function for authenticated referrals
804 This version takes a void* that we can shove useful stuff in :-)
805 ******************************************************************/
806 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
807 #else
808 static int rebindproc_with_state (LDAP * ld, char **whop, char **credp,
809 int *methodp, int freeit, void *arg)
810 {
811 struct smbldap_state *ldap_state = arg;
812
813 /** @TODO Should we be doing something to check what servers we rebind to?
814 Could we get a referral to a machine that we don't want to give our
815 username and password to? */
816
817 if (freeit) {
818 SAFE_FREE(*whop);
819 if (*credp) {
820 memset(*credp, '\0', strlen(*credp));
821 }
822 SAFE_FREE(*credp);
823 } else {
824 DEBUG(5,("rebind_proc_with_state: Rebinding as \"%s\"\n",
825 ldap_state->bind_dn?ldap_state->bind_dn:"[Anonymous bind]"));
826
827 if (ldap_state->anonymous) {
828 *whop = NULL;
829 *credp = NULL;
830 } else {
831 *whop = SMB_STRDUP(ldap_state->bind_dn);
832 if (!*whop) {
833 return LDAP_NO_MEMORY;
834 }
835 *credp = SMB_STRDUP(ldap_state->bind_secret);
836 if (!*credp) {
837 SAFE_FREE(*whop);
838 return LDAP_NO_MEMORY;
839 }
840 }
841 *methodp = LDAP_AUTH_SIMPLE;
842 }
843
844 GetTimeOfDay(&ldap_state->last_rebind);
845
846 return 0;
847 }
848 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
849
850 /*******************************************************************
851 a rebind function for authenticated referrals
852 This version takes a void* that we can shove useful stuff in :-)
853 and actually does the connection.
854 ******************************************************************/
855 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
856 static int rebindproc_connect_with_state (LDAP *ldap_struct,
857 LDAP_CONST char *url,
858 ber_tag_t request,
859 ber_int_t msgid, void *arg)
860 {
861 struct smbldap_state *ldap_state =
862 (struct smbldap_state *)arg;
863 int rc;
864 int version;
865
866 DEBUG(5,("rebindproc_connect_with_state: Rebinding to %s as \"%s\"\n",
867 url, ldap_state->bind_dn?ldap_state->bind_dn:"[Anonymous bind]"));
868
869 /* call START_TLS again (ldaps:// is handled by the OpenLDAP library
870 * itself) before rebinding to another LDAP server to avoid to expose
871 * our credentials. At least *try* to secure the connection - Guenther */
872
873 smb_ldap_upgrade_conn(ldap_struct, &version);
874 smb_ldap_start_tls(ldap_struct, version);
875
876 /** @TODO Should we be doing something to check what servers we rebind to?
877 Could we get a referral to a machine that we don't want to give our
878 username and password to? */
879
880 rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
881
882 /* only set the last rebind timestamp when we did rebind after a
883 * non-read LDAP operation. That way we avoid the replication sleep
884 * after a simple redirected search operation - Guenther */
885
886 switch (request) {
887
888 case LDAP_REQ_MODIFY:
889 case LDAP_REQ_ADD:
890 case LDAP_REQ_DELETE:
891 case LDAP_REQ_MODDN:
892 case LDAP_REQ_EXTENDED:
893 DEBUG(10,("rebindproc_connect_with_state: "
894 "setting last_rebind timestamp "
895 "(req: 0x%02x)\n", (unsigned int)request));
896 GetTimeOfDay(&ldap_state->last_rebind);
897 break;
898 default:
899 ZERO_STRUCT(ldap_state->last_rebind);
900 break;
901 }
902
903 return rc;
904 }
905 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
906
907 /*******************************************************************
908 Add a rebind function for authenticated referrals
909 ******************************************************************/
910 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
911 #else
912 # if LDAP_SET_REBIND_PROC_ARGS == 2
913 static int rebindproc (LDAP *ldap_struct, char **whop, char **credp,
914 int *method, int freeit )
915 {
916 struct smbldap_state *ldap_state = smbldap_find_state(ldap_struct);
917
918 return rebindproc_with_state(ldap_struct, whop, credp,
919 method, freeit, ldap_state);
920
921 }
922 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
923 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
924
925 /*******************************************************************
926 a rebind function for authenticated referrals
927 this also does the connection, but no void*.
928 ******************************************************************/
929 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
930 # if LDAP_SET_REBIND_PROC_ARGS == 2
931 static int rebindproc_connect (LDAP * ld, LDAP_CONST char *url, int request,
932 ber_int_t msgid)
933 {
934 struct smbldap_state *ldap_state = smbldap_find_state(ld);
935
936 return rebindproc_connect_with_state(ld, url, (ber_tag_t)request, msgid,
937 ldap_state);
938 }
939 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
940 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
941
942 /*******************************************************************
943 connect to the ldap server under system privilege.
944 ******************************************************************/
945 static int smbldap_connect_system(struct smbldap_state *ldap_state, LDAP * ldap_struct)
946 {
947 int rc;
948 int version;
949
950 if (!ldap_state->anonymous && !ldap_state->bind_dn) {
951
952 /* get the default dn and password only if they are not set already */
953 if (!fetch_ldap_pw(&ldap_state->bind_dn, &ldap_state->bind_secret)) {
954 DEBUG(0, ("ldap_connect_system: Failed to retrieve password from secrets.tdb\n"));
955 return LDAP_INVALID_CREDENTIALS;
956 }
957 }
958
959 /* removed the sasl_bind_s "EXTERNAL" stuff, as my testsuite
960 (OpenLDAP) doesnt' seem to support it */
961
962 DEBUG(10,("ldap_connect_system: Binding to ldap server %s as \"%s\"\n",
963 ldap_state->uri, ldap_state->bind_dn));
964
965 #ifdef HAVE_LDAP_SET_REBIND_PROC
966 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
967 # if LDAP_SET_REBIND_PROC_ARGS == 2
968 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect);
969 # endif
970 # if LDAP_SET_REBIND_PROC_ARGS == 3
971 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect_with_state, (void *)ldap_state);
972 # endif
973 #else /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
974 # if LDAP_SET_REBIND_PROC_ARGS == 2
975 ldap_set_rebind_proc(ldap_struct, &rebindproc);
976 # endif
977 # if LDAP_SET_REBIND_PROC_ARGS == 3
978 ldap_set_rebind_proc(ldap_struct, &rebindproc_with_state, (void *)ldap_state);
979 # endif
980 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
981 #endif
982
983 rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
984
985 if (rc != LDAP_SUCCESS) {
986 char *ld_error = NULL;
987 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
988 &ld_error);
989 DEBUG(ldap_state->num_failures ? 2 : 0,
990 ("failed to bind to server %s with dn=\"%s\" Error: %s\n\t%s\n",
991 ldap_state->uri,
992 ldap_state->bind_dn ? ldap_state->bind_dn : "[Anonymous bind]",
993 ldap_err2string(rc),
994 ld_error ? ld_error : "(unknown)"));
995 SAFE_FREE(ld_error);
996 ldap_state->num_failures++;
997 return rc;
998 }
999
1000 ldap_state->num_failures = 0;
1001 ldap_state->paged_results = False;
1002
1003 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
1004
1005 if (smbldap_has_control(ldap_state->ldap_struct, ADS_PAGE_CTL_OID) && version == 3) {
1006 ldap_state->paged_results = True;
1007 }
1008
1009 DEBUG(3, ("ldap_connect_system: successful connection to the LDAP server\n"));
1010 DEBUGADD(10, ("ldap_connect_system: LDAP server %s support paged results\n",
1011 ldap_state->paged_results ? "does" : "does not"));
1012 return rc;
1013 }
1014
1015 static void smbldap_idle_fn(struct event_context *event_ctx,
1016 struct timed_event *te,
1017 const struct timeval *now,
1018 void *private_data);
1019
1020 /**********************************************************************
1021 Connect to LDAP server (called before every ldap operation)
1022 *********************************************************************/
1023 static int smbldap_open(struct smbldap_state *ldap_state)
1024 {
1025 int rc, opt_rc;
1026 bool reopen = False;
1027 SMB_ASSERT(ldap_state);
1028
1029 #ifndef NO_LDAP_SECURITY
1030 if (geteuid() != 0) {
1031 DEBUG(0, ("smbldap_open: cannot access LDAP when not root\n"));
1032 return LDAP_INSUFFICIENT_ACCESS;
1033 }
1034 #endif
1035
1036 if ((ldap_state->ldap_struct != NULL) && ((ldap_state->last_ping + SMBLDAP_DONT_PING_TIME) < time(NULL))) {
1037
1038 #ifdef HAVE_UNIXSOCKET
1039 struct sockaddr_un addr;
1040 #else
1041 struct sockaddr addr;
1042 #endif
1043 socklen_t len = sizeof(addr);
1044 int sd;
1045
1046 opt_rc = ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_DESC, &sd);
1047 if (opt_rc == 0 && (getpeername(sd, (struct sockaddr *) &addr, &len)) < 0 )
1048 reopen = True;
1049
1050 #ifdef HAVE_UNIXSOCKET
1051 if (opt_rc == 0 && addr.sun_family == AF_UNIX)
1052 reopen = True;
1053 #endif
1054 if (reopen) {
1055 /* the other end has died. reopen. */
1056 ldap_unbind(ldap_state->ldap_struct);
1057 ldap_state->ldap_struct = NULL;
1058 ldap_state->last_ping = (time_t)0;
1059 } else {
1060 ldap_state->last_ping = time(NULL);
1061 }
1062 }
1063
1064 if (ldap_state->ldap_struct != NULL) {
1065 DEBUG(11,("smbldap_open: already connected to the LDAP server\n"));
1066 return LDAP_SUCCESS;
1067 }
1068
1069 if ((rc = smbldap_open_connection(ldap_state))) {
1070 return rc;
1071 }
1072
1073 if ((rc = smbldap_connect_system(ldap_state, ldap_state->ldap_struct))) {
1074 ldap_unbind(ldap_state->ldap_struct);
1075 ldap_state->ldap_struct = NULL;
1076 return rc;
1077 }
1078
1079
1080 ldap_state->last_ping = time(NULL);
1081 ldap_state->pid = sys_getpid();
1082
1083 TALLOC_FREE(ldap_state->idle_event);
1084
1085 if (ldap_state->event_context != NULL) {
1086 ldap_state->idle_event = event_add_timed(
1087 ldap_state->event_context, NULL,
1088 timeval_current_ofs(SMBLDAP_IDLE_TIME, 0),
1089 "smbldap_idle_fn", smbldap_idle_fn, ldap_state);
1090 }
1091
1092 DEBUG(4,("The LDAP server is successfully connected\n"));
1093
1094 return LDAP_SUCCESS;
1095 }
1096
1097 /**********************************************************************
1098 Disconnect from LDAP server
1099 *********************************************************************/
1100 static NTSTATUS smbldap_close(struct smbldap_state *ldap_state)
1101 {
1102 if (!ldap_state)
1103 return NT_STATUS_INVALID_PARAMETER;
1104
1105 if (ldap_state->ldap_struct != NULL) {
1106 ldap_unbind(ldap_state->ldap_struct);
1107 ldap_state->ldap_struct = NULL;
1108 }
1109
1110 smbldap_delete_state(ldap_state);
1111
1112 DEBUG(5,("The connection to the LDAP server was closed\n"));
1113 /* maybe free the results here --metze */
1114
1115 return NT_STATUS_OK;
1116 }
1117
1118 static bool got_alarm;
1119
1120 static void (*old_handler)(int);
1121
1122 static void gotalarm_sig(int dummy)
1123 {
1124 got_alarm = True;
1125 }
1126
1127 static int another_ldap_try(struct smbldap_state *ldap_state, int *rc,
1128 int *attempts, time_t endtime)
1129 {
1130 time_t now = time(NULL);
1131 int open_rc = LDAP_SERVER_DOWN;
1132
1133 if (*rc != LDAP_SERVER_DOWN)
1134 goto no_next;
1135
1136 if (now >= endtime) {
1137 smbldap_close(ldap_state);
1138 *rc = LDAP_TIMEOUT;
1139 goto no_next;
1140 }
1141
1142 if (*attempts == 0) {
1143 got_alarm = False;
1144 old_handler = CatchSignal(SIGALRM, gotalarm_sig);
1145 alarm(endtime - now);
1146
1147 if (ldap_state->pid != sys_getpid())
1148 smbldap_close(ldap_state);
1149 }
1150
1151 while (1) {
1152
1153 if (*attempts != 0)
1154 smb_msleep(1000);
1155
1156 *attempts += 1;
1157
1158 open_rc = smbldap_open(ldap_state);
1159
1160 if (open_rc == LDAP_SUCCESS) {
1161 ldap_state->last_use = now;
1162 return True;
1163 }
1164
1165 if (open_rc == LDAP_INSUFFICIENT_ACCESS) {
1166 /* The fact that we are non-root or any other
1167 * access-denied condition will not change in the next
1168 * round of trying */
1169 *rc = open_rc;
1170 break;
1171 }
1172
1173 if (got_alarm) {
1174 *rc = LDAP_TIMEOUT;
1175 break;
1176 }
1177
1178 if (open_rc != LDAP_SUCCESS) {
1179 DEBUG(1, ("Connection to LDAP server failed for the "
1180 "%d try!\n", *attempts));
1181 }
1182 }
1183
1184 no_next:
1185 CatchSignal(SIGALRM, old_handler);
1186 alarm(0);
1187 ldap_state->last_use = now;
1188 return False;
1189 }
1190
1191 /*********************************************************************
1192 ********************************************************************/
1193
1194 static int smbldap_search_ext(struct smbldap_state *ldap_state,
1195 const char *base, int scope, const char *filter,
1196 const char *attrs[], int attrsonly,
1197 LDAPControl **sctrls, LDAPControl **cctrls,
1198 int sizelimit, LDAPMessage **res)
1199 {
1200 int rc = LDAP_SERVER_DOWN;
1201 int attempts = 0;
1202 char *utf8_filter;
1203 time_t endtime = time(NULL)+lp_ldap_timeout();
1204 struct timeval timeout;
1205 size_t converted_size;
1206
1207 SMB_ASSERT(ldap_state);
1208
1209 DEBUG(5,("smbldap_search_ext: base => [%s], filter => [%s], "
1210 "scope => [%d]\n", base, filter, scope));
1211
1212 if (ldap_state->last_rebind.tv_sec > 0) {
1213 struct timeval tval;
1214 SMB_BIG_INT tdiff = 0;
1215 int sleep_time = 0;
1216
1217 ZERO_STRUCT(tval);
1218 GetTimeOfDay(&tval);
1219
1220 tdiff = usec_time_diff(&tval, &ldap_state->last_rebind);
1221 tdiff /= 1000; /* Convert to milliseconds. */
1222
1223 sleep_time = lp_ldap_replication_sleep()-(int)tdiff;
1224 sleep_time = MIN(sleep_time, MAX_LDAP_REPLICATION_SLEEP_TIME);
1225
1226 if (sleep_time > 0) {
1227 /* we wait for the LDAP replication */
1228 DEBUG(5,("smbldap_search_ext: waiting %d milliseconds "
1229 "for LDAP replication.\n",sleep_time));
1230 smb_msleep(sleep_time);
1231 DEBUG(5,("smbldap_search_ext: go on!\n"));
1232 }
1233 ZERO_STRUCT(ldap_state->last_rebind);
1234 }
1235
1236 if (!push_utf8_allocate(&utf8_filter, filter, &converted_size)) {
1237 return LDAP_NO_MEMORY;
1238 }
1239
1240 /* Setup timeout for the ldap_search_ext_s call - local and remote. */
1241 timeout.tv_sec = lp_ldap_timeout();
1242 timeout.tv_usec = 0;
1243
1244 /* Setup alarm timeout.... Do we need both of these ? JRA.
1245 * Yes, I think we do need both of these. The server timeout only
1246 * covers the case where the server's operation takes too long. It
1247 * does not cover the case where the request hangs on its way to the
1248 * server. The server side timeout is not strictly necessary, it's
1249 * just a bit more kind to the server. VL. */
1250
1251 got_alarm = 0;
1252 CatchSignal(SIGALRM, SIGNAL_CAST gotalarm_sig);
1253 alarm(lp_ldap_timeout());
1254 /* End setup timeout. */
1255
1256 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1257 rc = ldap_search_ext_s(ldap_state->ldap_struct, base, scope,
1258 utf8_filter,
1259 CONST_DISCARD(char **, attrs),
1260 attrsonly, sctrls, cctrls, &timeout,
1261 sizelimit, res);
1262 if (rc != LDAP_SUCCESS) {
1263 char *ld_error = NULL;
1264 int ld_errno;
1265
1266 ldap_get_option(ldap_state->ldap_struct,
1267 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1268
1269 ldap_get_option(ldap_state->ldap_struct,
1270 LDAP_OPT_ERROR_STRING, &ld_error);
1271 DEBUG(10, ("Failed search for base: %s, error: %d (%s) "
1272 "(%s)\n", base, ld_errno,
1273 ldap_err2string(rc),
1274 ld_error ? ld_error : "unknown"));
1275 SAFE_FREE(ld_error);
1276
1277 if (ld_errno == LDAP_SERVER_DOWN) {
1278 ldap_unbind(ldap_state->ldap_struct);
1279 ldap_state->ldap_struct = NULL;
1280 }
1281 }
1282 }
1283
1284 SAFE_FREE(utf8_filter);
1285
1286 /* Teardown timeout. */
1287 CatchSignal(SIGALRM, SIGNAL_CAST SIG_IGN);
1288 alarm(0);
1289
1290 if (got_alarm != 0)
1291 return LDAP_TIMELIMIT_EXCEEDED;
1292
1293 return rc;
1294 }
1295
1296 int smbldap_search(struct smbldap_state *ldap_state,
1297 const char *base, int scope, const char *filter,
1298 const char *attrs[], int attrsonly,
1299 LDAPMessage **res)
1300 {
1301 return smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1302 attrsonly, NULL, NULL, LDAP_NO_LIMIT, res);
1303 }
1304
1305 int smbldap_search_paged(struct smbldap_state *ldap_state,
1306 const char *base, int scope, const char *filter,
1307 const char **attrs, int attrsonly, int pagesize,
1308 LDAPMessage **res, void **cookie)
1309 {
1310 LDAPControl pr;
1311 LDAPControl **rcontrols;
1312 LDAPControl *controls[2] = { NULL, NULL};
1313 BerElement *cookie_be = NULL;
1314 struct berval *cookie_bv = NULL;
1315 int tmp = 0, i, rc;
1316 bool critical = True;
1317
1318 *res = NULL;
1319
1320 DEBUG(3,("smbldap_search_paged: base => [%s], filter => [%s],"
1321 "scope => [%d], pagesize => [%d]\n",
1322 base, filter, scope, pagesize));
1323
1324 cookie_be = ber_alloc_t(LBER_USE_DER);
1325 if (cookie_be == NULL) {
1326 DEBUG(0,("smbldap_create_page_control: ber_alloc_t returns "
1327 "NULL\n"));
1328 return LDAP_NO_MEMORY;
1329 }
1330
1331 /* construct cookie */
1332 if (*cookie != NULL) {
1333 ber_printf(cookie_be, "{iO}", (ber_int_t) pagesize, *cookie);
1334 ber_bvfree((struct berval *)*cookie); /* don't need it from last time */
1335 *cookie = NULL;
1336 } else {
1337 ber_printf(cookie_be, "{io}", (ber_int_t) pagesize, "", 0);
1338 }
1339 ber_flatten(cookie_be, &cookie_bv);
1340
1341 pr.ldctl_oid = CONST_DISCARD(char *, ADS_PAGE_CTL_OID);
1342 pr.ldctl_iscritical = (char) critical;
1343 pr.ldctl_value.bv_len = cookie_bv->bv_len;
1344 pr.ldctl_value.bv_val = cookie_bv->bv_val;
1345
1346 controls[0] = &pr;
1347 controls[1] = NULL;
1348
1349 rc = smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1350 0, controls, NULL, LDAP_NO_LIMIT, res);
1351
1352 ber_free(cookie_be, 1);
1353 ber_bvfree(cookie_bv);
1354
1355 if (rc != 0) {
1356 DEBUG(3,("smbldap_search_paged: smbldap_search_ext(%s) "
1357 "failed with [%s]\n", filter, ldap_err2string(rc)));
1358 goto done;
1359 }
1360
1361 DEBUG(3,("smbldap_search_paged: search was successfull\n"));
1362
1363 rc = ldap_parse_result(ldap_state->ldap_struct, *res, NULL, NULL,
1364 NULL, NULL, &rcontrols, 0);
1365 if (rc != 0) {
1366 DEBUG(3,("smbldap_search_paged: ldap_parse_result failed " \
1367 "with [%s]\n", ldap_err2string(rc)));
1368 goto done;
1369 }
1370
1371 if (rcontrols == NULL)
1372 goto done;
1373
1374 for (i=0; rcontrols[i]; i++) {
1375
1376 if (strcmp(ADS_PAGE_CTL_OID, rcontrols[i]->ldctl_oid) != 0)
1377 continue;
1378
1379 cookie_be = ber_init(&rcontrols[i]->ldctl_value);
1380 ber_scanf(cookie_be,"{iO}", &tmp, &cookie_bv);
1381 /* the berval is the cookie, but must be freed when it is all
1382 done */
1383 if (cookie_bv->bv_len)
1384 *cookie=ber_bvdup(cookie_bv);
1385 else
1386 *cookie=NULL;
1387 ber_bvfree(cookie_bv);
1388 ber_free(cookie_be, 1);
1389 break;
1390 }
1391 ldap_controls_free(rcontrols);
1392 done:
1393 return rc;
1394 }
1395
1396 int smbldap_modify(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1397 {
1398 int rc = LDAP_SERVER_DOWN;
1399 int attempts = 0;
1400 char *utf8_dn;
1401 time_t endtime = time(NULL)+lp_ldap_timeout();
1402 size_t converted_size;
1403
1404 SMB_ASSERT(ldap_state);
1405
1406 DEBUG(5,("smbldap_modify: dn => [%s]\n", dn ));
1407
1408 if (!push_utf8_allocate(&utf8_dn, dn, &converted_size)) {
1409 return LDAP_NO_MEMORY;
1410 }
1411
1412 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1413 rc = ldap_modify_s(ldap_state->ldap_struct, utf8_dn, attrs);
1414 if (rc != LDAP_SUCCESS) {
1415 char *ld_error = NULL;
1416 int ld_errno;
1417
1418 ldap_get_option(ldap_state->ldap_struct,
1419 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1420
1421 ldap_get_option(ldap_state->ldap_struct,
1422 LDAP_OPT_ERROR_STRING, &ld_error);
1423 DEBUG(10, ("Failed to modify dn: %s, error: %d (%s) "
1424 "(%s)\n", dn, ld_errno,
1425 ldap_err2string(rc),
1426 ld_error ? ld_error : "unknown"));
1427 SAFE_FREE(ld_error);
1428
1429 if (ld_errno == LDAP_SERVER_DOWN) {
1430 ldap_unbind(ldap_state->ldap_struct);
1431 ldap_state->ldap_struct = NULL;
1432 }
1433 }
1434 }
1435
1436 SAFE_FREE(utf8_dn);
1437 return rc;
1438 }
1439
1440 int smbldap_add(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1441 {
1442 int rc = LDAP_SERVER_DOWN;
1443 int attempts = 0;
1444 char *utf8_dn;
1445 time_t endtime = time(NULL)+lp_ldap_timeout();
1446 size_t converted_size;
1447
1448 SMB_ASSERT(ldap_state);
1449
1450 DEBUG(5,("smbldap_add: dn => [%s]\n", dn ));
1451
1452 if (!push_utf8_allocate(&utf8_dn, dn, &converted_size)) {
1453 return LDAP_NO_MEMORY;
1454 }
1455
1456 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1457 rc = ldap_add_s(ldap_state->ldap_struct, utf8_dn, attrs);
1458 if (rc != LDAP_SUCCESS) {
1459 char *ld_error = NULL;
1460 int ld_errno;
1461
1462 ldap_get_option(ldap_state->ldap_struct,
1463 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1464
1465 ldap_get_option(ldap_state->ldap_struct,
1466 LDAP_OPT_ERROR_STRING, &ld_error);
1467 DEBUG(10, ("Failed to add dn: %s, error: %d (%s) "
1468 "(%s)\n", dn, ld_errno,
1469 ldap_err2string(rc),
1470 ld_error ? ld_error : "unknown"));
1471 SAFE_FREE(ld_error);
1472
1473 if (ld_errno == LDAP_SERVER_DOWN) {
1474 ldap_unbind(ldap_state->ldap_struct);
1475 ldap_state->ldap_struct = NULL;
1476 }
1477 }
1478 }
1479
1480 SAFE_FREE(utf8_dn);
1481 return rc;
1482 }
1483
1484 int smbldap_delete(struct smbldap_state *ldap_state, const char *dn)
1485 {
1486 int rc = LDAP_SERVER_DOWN;
1487 int attempts = 0;
1488 char *utf8_dn;
1489 time_t endtime = time(NULL)+lp_ldap_timeout();
1490 size_t converted_size;
1491
1492 SMB_ASSERT(ldap_state);
1493
1494 DEBUG(5,("smbldap_delete: dn => [%s]\n", dn ));
1495
1496 if (!push_utf8_allocate(&utf8_dn, dn, &converted_size)) {
1497 return LDAP_NO_MEMORY;
1498 }
1499
1500 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1501 rc = ldap_delete_s(ldap_state->ldap_struct, utf8_dn);
1502 if (rc != LDAP_SUCCESS) {
1503 char *ld_error = NULL;
1504 int ld_errno;
1505
1506 ldap_get_option(ldap_state->ldap_struct,
1507 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1508
1509 ldap_get_option(ldap_state->ldap_struct,
1510 LDAP_OPT_ERROR_STRING, &ld_error);
1511 DEBUG(10, ("Failed to delete dn: %s, error: %d (%s) "
1512 "(%s)\n", dn, ld_errno,
1513 ldap_err2string(rc),
1514 ld_error ? ld_error : "unknown"));
1515 SAFE_FREE(ld_error);
1516
1517 if (ld_errno == LDAP_SERVER_DOWN) {
1518 ldap_unbind(ldap_state->ldap_struct);
1519 ldap_state->ldap_struct = NULL;
1520 }
1521 }
1522 }
1523
1524 SAFE_FREE(utf8_dn);
1525 return rc;
1526 }
1527
1528 int smbldap_extended_operation(struct smbldap_state *ldap_state,
1529 LDAP_CONST char *reqoid, struct berval *reqdata,
1530 LDAPControl **serverctrls, LDAPControl **clientctrls,
1531 char **retoidp, struct berval **retdatap)
1532 {
1533 int rc = LDAP_SERVER_DOWN;
1534 int attempts = 0;
1535 time_t endtime = time(NULL)+lp_ldap_timeout();
1536
1537 if (!ldap_state)
1538 return (-1);
1539
1540 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1541 rc = ldap_extended_operation_s(ldap_state->ldap_struct, reqoid,
1542 reqdata, serverctrls,
1543 clientctrls, retoidp, retdatap);
1544 if (rc != LDAP_SUCCESS) {
1545 char *ld_error = NULL;
1546 int ld_errno;
1547
1548 ldap_get_option(ldap_state->ldap_struct,
1549 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1550
1551 ldap_get_option(ldap_state->ldap_struct,
1552 LDAP_OPT_ERROR_STRING, &ld_error);
1553 DEBUG(10, ("Extended operation failed with error: "
1554 "%d (%s) (%s)\n", ld_errno,
1555 ldap_err2string(rc),
1556 ld_error ? ld_error : "unknown"));
1557 SAFE_FREE(ld_error);
1558
1559 if (ld_errno == LDAP_SERVER_DOWN) {
1560 ldap_unbind(ldap_state->ldap_struct);
1561 ldap_state->ldap_struct = NULL;
1562 }
1563 }
1564 }
1565
1566 return rc;
1567 }
1568
1569 /*******************************************************************
1570 run the search by name.
1571 ******************************************************************/
1572 int smbldap_search_suffix (struct smbldap_state *ldap_state,
1573 const char *filter, const char **search_attr,
1574 LDAPMessage ** result)
1575 {
1576 return smbldap_search(ldap_state, lp_ldap_suffix(), LDAP_SCOPE_SUBTREE,
1577 filter, search_attr, 0, result);
1578 }
1579
1580 static void smbldap_idle_fn(struct event_context *event_ctx,
1581 struct timed_event *te,
1582 const struct timeval *now,
1583 void *private_data)
1584 {
1585 struct smbldap_state *state = (struct smbldap_state *)private_data;
1586
1587 TALLOC_FREE(state->idle_event);
1588
1589 if (state->ldap_struct == NULL) {
1590 DEBUG(10,("ldap connection not connected...\n"));
1591 return;
1592 }
1593
1594 if ((state->last_use+SMBLDAP_IDLE_TIME) > now->tv_sec) {
1595 DEBUG(10,("ldap connection not idle...\n"));
1596
1597 state->idle_event = event_add_timed(
1598 event_ctx, NULL,
1599 timeval_add(now, SMBLDAP_IDLE_TIME, 0),
1600 "smbldap_idle_fn", smbldap_idle_fn,
1601 private_data);
1602 return;
1603 }
1604
1605 DEBUG(7,("ldap connection idle...closing connection\n"));
1606 smbldap_close(state);
1607 }
1608
1609 /**********************************************************************
1610 Housekeeping
1611 *********************************************************************/
1612
1613 void smbldap_free_struct(struct smbldap_state **ldap_state)
1614 {
1615 smbldap_close(*ldap_state);
1616
1617 if ((*ldap_state)->bind_secret) {
1618 memset((*ldap_state)->bind_secret, '\0', strlen((*ldap_state)->bind_secret));
1619 }
1620
1621 SAFE_FREE((*ldap_state)->bind_dn);
1622 SAFE_FREE((*ldap_state)->bind_secret);
1623
1624 TALLOC_FREE((*ldap_state)->idle_event);
1625
1626 *ldap_state = NULL;
1627
1628 /* No need to free any further, as it is talloc()ed */
1629 }
1630
1631
1632 /**********************************************************************
1633 Intitalise the 'general' ldap structures, on which ldap operations may be conducted
1634 *********************************************************************/
1635
1636 NTSTATUS smbldap_init(TALLOC_CTX *mem_ctx, struct event_context *event_ctx,
1637 const char *location,
1638 struct smbldap_state **smbldap_state)
1639 {
1640 *smbldap_state = TALLOC_ZERO_P(mem_ctx, struct smbldap_state);
1641 if (!*smbldap_state) {
1642 DEBUG(0, ("talloc() failed for ldapsam private_data!\n"));
1643 return NT_STATUS_NO_MEMORY;
1644 }
1645
1646 if (location) {
1647 (*smbldap_state)->uri = talloc_strdup(mem_ctx, location);
1648 } else {
1649 (*smbldap_state)->uri = "ldap://localhost";
1650 }
1651
1652 (*smbldap_state)->event_context = event_ctx;
1653
1654 return NT_STATUS_OK;
1655 }
1656
1657 /*******************************************************************
1658 Return a copy of the DN for a LDAPMessage. Convert from utf8 to CH_UNIX.
1659 ********************************************************************/
1660 char *smbldap_get_dn(LDAP *ld, LDAPMessage *entry)
1661 {
1662 char *utf8_dn, *unix_dn;
1663 size_t converted_size;
1664
1665 utf8_dn = ldap_get_dn(ld, entry);
1666 if (!utf8_dn) {
1667 DEBUG (5, ("smbldap_get_dn: ldap_get_dn failed\n"));
1668 return NULL;
1669 }
1670 if (!pull_utf8_allocate(&unix_dn, utf8_dn, &converted_size)) {
1671 DEBUG (0, ("smbldap_get_dn: String conversion failure utf8 "
1672 "[%s]\n", utf8_dn));
1673 return NULL;
1674 }
1675 ldap_memfree(utf8_dn);
1676 return unix_dn;
1677 }
1678
1679 const char *smbldap_talloc_dn(TALLOC_CTX *mem_ctx, LDAP *ld,
1680 LDAPMessage *entry)
1681 {
1682 char *utf8_dn, *unix_dn;
1683 size_t converted_size;
1684
1685 utf8_dn = ldap_get_dn(ld, entry);
1686 if (!utf8_dn) {
1687 DEBUG (5, ("smbldap_get_dn: ldap_get_dn failed\n"));
1688 return NULL;
1689 }
1690 if (!pull_utf8_talloc(mem_ctx, &unix_dn, utf8_dn, &converted_size)) {
1691 DEBUG (0, ("smbldap_get_dn: String conversion failure utf8 "
1692 "[%s]\n", utf8_dn));
1693 return NULL;
1694 }
1695 ldap_memfree(utf8_dn);
1696 return unix_dn;
1697 }
1698
1699 /*******************************************************************
1700 Check if root-dse has a certain Control or Extension
1701 ********************************************************************/
1702
1703 static bool smbldap_check_root_dse(LDAP *ld, const char **attrs, const char *value)
1704 {
1705 LDAPMessage *msg = NULL;
1706 LDAPMessage *entry = NULL;
1707 char **values = NULL;
1708 int rc, num_result, num_values, i;
1709 bool result = False;
1710
1711 if (!attrs[0]) {
1712 DEBUG(3,("smbldap_check_root_dse: nothing to look for\n"));
1713 return False;
1714 }
1715
1716 if (!strequal(attrs[0], "supportedExtension") &&
1717 !strequal(attrs[0], "supportedControl") &&
1718 !strequal(attrs[0], "namingContexts")) {
1719 DEBUG(3,("smbldap_check_root_dse: no idea what to query root-dse for: %s ?\n", attrs[0]));
1720 return False;
1721 }
1722
1723 rc = ldap_search_s(ld, "", LDAP_SCOPE_BASE,
1724 "(objectclass=*)", CONST_DISCARD(char **, attrs), 0 , &msg);
1725
1726 if (rc != LDAP_SUCCESS) {
1727 DEBUG(3,("smbldap_check_root_dse: Could not search rootDSE\n"));
1728 return False;
1729 }
1730
1731 num_result = ldap_count_entries(ld, msg);
1732
1733 if (num_result != 1) {
1734 DEBUG(3,("smbldap_check_root_dse: Expected one rootDSE, got %d\n", num_result));
1735 goto done;
1736 }
1737
1738 entry = ldap_first_entry(ld, msg);
1739
1740 if (entry == NULL) {
1741 DEBUG(3,("smbldap_check_root_dse: Could not retrieve rootDSE\n"));
1742 goto done;
1743 }
1744
1745 values = ldap_get_values(ld, entry, attrs[0]);
1746
1747 if (values == NULL) {
1748 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not support any %s\n", attrs[0]));
1749 goto done;
1750 }
1751
1752 num_values = ldap_count_values(values);
1753
1754 if (num_values == 0) {
1755 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not have any %s\n", attrs[0]));
1756 goto done;
1757 }
1758
1759 for (i=0; i<num_values; i++) {
1760 if (strcmp(values[i], value) == 0)
1761 result = True;
1762 }
1763
1764
1765 done:
1766 if (values != NULL)
1767 ldap_value_free(values);
1768 if (msg != NULL)
1769 ldap_msgfree(msg);
1770
1771 return result;
1772
1773 }
1774
1775 /*******************************************************************
1776 Check if LDAP-Server supports a certain Control (OID in string format)
1777 ********************************************************************/
1778
1779 bool smbldap_has_control(LDAP *ld, const char *control)
1780 {
1781 const char *attrs[] = { "supportedControl", NULL };
1782 return smbldap_check_root_dse(ld, attrs, control);
1783 }
1784
1785 /*******************************************************************
1786 Check if LDAP-Server supports a certain Extension (OID in string format)
1787 ********************************************************************/
1788
1789 bool smbldap_has_extension(LDAP *ld, const char *extension)
1790 {
1791 const char *attrs[] = { "supportedExtension", NULL };
1792 return smbldap_check_root_dse(ld, attrs, extension);
1793 }
1794
1795 /*******************************************************************
1796 Check if LDAP-Server holds a given namingContext
1797 ********************************************************************/
1798
1799 bool smbldap_has_naming_context(LDAP *ld, const char *naming_context)
1800 {
1801 const char *attrs[] = { "namingContexts", NULL };
1802 return smbldap_check_root_dse(ld, attrs, naming_context);
1803 }
1804
1805 bool smbldap_set_creds(struct smbldap_state *ldap_state, bool anon, const char *dn, const char *secret)
1806 {
1807 ldap_state->anonymous = anon;
1808
1809 /* free any previously set credential */
1810
1811 SAFE_FREE(ldap_state->bind_dn);
1812 if (ldap_state->bind_secret) {
1813 /* make sure secrets are zeroed out of memory */
1814 memset(ldap_state->bind_secret, '\0', strlen(ldap_state->bind_secret));
1815 SAFE_FREE(ldap_state->bind_secret);
1816 }
1817
1818 if ( ! anon) {
1819 ldap_state->bind_dn = SMB_STRDUP(dn);
1820 ldap_state->bind_secret = SMB_STRDUP(secret);
1821 }
1822
1823 return True;
1824 }
WIP