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[GLUE] Rsync SAMBA_3_0 SVN r25598 in order to create the v3-0-test branch.
[Samba.git] / source / lib / smbldap.c
blobc09e0968c5258512228c59ae43c625f9d925d5a3
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_DISPLAY_NAME, "displayName" },
142 { LDAP_ATTR_HOME_DRIVE, "sambaHomeDrive" },
143 { LDAP_ATTR_HOME_PATH, "sambaHomePath" },
144 { LDAP_ATTR_LOGON_SCRIPT, "sambaLogonScript" },
145 { LDAP_ATTR_PROFILE_PATH, "sambaProfilePath" },
146 { LDAP_ATTR_USER_WKS, "sambaUserWorkstations" },
147 { LDAP_ATTR_USER_SID, LDAP_ATTRIBUTE_SID },
148 { LDAP_ATTR_PRIMARY_GROUP_SID, "sambaPrimaryGroupSID" },
149 { LDAP_ATTR_LMPW, "sambaLMPassword" },
150 { LDAP_ATTR_NTPW, "sambaNTPassword" },
151 { LDAP_ATTR_DOMAIN, "sambaDomainName" },
152 { LDAP_ATTR_ACB_INFO, "sambaAcctFlags" },
153 { LDAP_ATTR_MUNGED_DIAL, "sambaMungedDial" },
154 { LDAP_ATTR_BAD_PASSWORD_COUNT, "sambaBadPasswordCount" },
155 { LDAP_ATTR_BAD_PASSWORD_TIME, "sambaBadPasswordTime" },
156 { LDAP_ATTR_PWD_HISTORY, "sambaPasswordHistory" },
157 { LDAP_ATTR_LOGON_HOURS, "sambaLogonHours" },
158 { LDAP_ATTR_LIST_END, NULL }
159 };
160
161 /* attributes used for allocating RIDs */
162
163 ATTRIB_MAP_ENTRY dominfo_attr_list[] = {
164 { LDAP_ATTR_DOMAIN, "sambaDomainName" },
165 { LDAP_ATTR_NEXT_RID, "sambaNextRid" },
166 { LDAP_ATTR_NEXT_USERRID, "sambaNextUserRid" },
167 { LDAP_ATTR_NEXT_GROUPRID, "sambaNextGroupRid" },
168 { LDAP_ATTR_DOM_SID, LDAP_ATTRIBUTE_SID },
169 { LDAP_ATTR_ALGORITHMIC_RID_BASE,"sambaAlgorithmicRidBase"},
170 { LDAP_ATTR_OBJCLASS, "objectClass" },
171 { LDAP_ATTR_LIST_END, NULL },
172 };
173
174 /* Samba 3.0 group mapping attributes */
175
176 ATTRIB_MAP_ENTRY groupmap_attr_list[] = {
177 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
178 { LDAP_ATTR_GROUP_SID, LDAP_ATTRIBUTE_SID },
179 { LDAP_ATTR_GROUP_TYPE, "sambaGroupType" },
180 { LDAP_ATTR_SID_LIST, "sambaSIDList" },
181 { LDAP_ATTR_DESC, "description" },
182 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
183 { LDAP_ATTR_CN, "cn" },
184 { LDAP_ATTR_OBJCLASS, "objectClass" },
185 { LDAP_ATTR_LIST_END, NULL }
186 };
187
188 ATTRIB_MAP_ENTRY groupmap_attr_list_to_delete[] = {
189 { LDAP_ATTR_GROUP_SID, LDAP_ATTRIBUTE_SID },
190 { LDAP_ATTR_GROUP_TYPE, "sambaGroupType" },
191 { LDAP_ATTR_DESC, "description" },
192 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
193 { LDAP_ATTR_SID_LIST, "sambaSIDList" },
194 { LDAP_ATTR_LIST_END, NULL }
195 };
196
197 /* idmap_ldap sambaUnixIdPool */
198
199 ATTRIB_MAP_ENTRY idpool_attr_list[] = {
200 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
201 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
202 { LDAP_ATTR_OBJCLASS, "objectClass" },
203 { LDAP_ATTR_LIST_END, NULL }
204 };
205
206 ATTRIB_MAP_ENTRY sidmap_attr_list[] = {
207 { LDAP_ATTR_SID, LDAP_ATTRIBUTE_SID },
208 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
209 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
210 { LDAP_ATTR_OBJCLASS, "objectClass" },
211 { LDAP_ATTR_LIST_END, NULL }
212 };
213
214 /**********************************************************************
215 perform a simple table lookup and return the attribute name
216 **********************************************************************/
217
218 const char* get_attr_key2string( ATTRIB_MAP_ENTRY table[], int key )
219 {
220 int i = 0;
221
222 while ( table[i].attrib != LDAP_ATTR_LIST_END ) {
223 if ( table[i].attrib == key )
224 return table[i].name;
225 i++;
226 }
227
228 return NULL;
229 }
230
231
232 /**********************************************************************
233 Return the list of attribute names from a mapping table
234 **********************************************************************/
235
236 const char** get_attr_list( TALLOC_CTX *mem_ctx, ATTRIB_MAP_ENTRY table[] )
237 {
238 const char **names;
239 int i = 0;
240
241 while ( table[i].attrib != LDAP_ATTR_LIST_END )
242 i++;
243 i++;
244
245 names = TALLOC_ARRAY( mem_ctx, const char*, i );
246 if ( !names ) {
247 DEBUG(0,("get_attr_list: out of memory\n"));
248 return NULL;
249 }
250
251 i = 0;
252 while ( table[i].attrib != LDAP_ATTR_LIST_END ) {
253 names[i] = talloc_strdup( names, table[i].name );
254 i++;
255 }
256 names[i] = NULL;
257
258 return names;
259 }
260
261 /*******************************************************************
262 Search an attribute and return the first value found.
263 ******************************************************************/
264
265 BOOL smbldap_get_single_attribute (LDAP * ldap_struct, LDAPMessage * entry,
266 const char *attribute, char *value,
267 int max_len)
268 {
269 char **values;
270
271 if ( !attribute )
272 return False;
273
274 value[0] = '\0';
275
276 if ((values = ldap_get_values (ldap_struct, entry, attribute)) == NULL) {
277 DEBUG (10, ("smbldap_get_single_attribute: [%s] = [<does not exist>]\n", attribute));
278
279 return False;
280 }
281
282 if (convert_string(CH_UTF8, CH_UNIX,values[0], -1, value, max_len, False) == (size_t)-1) {
283 DEBUG(1, ("smbldap_get_single_attribute: string conversion of [%s] = [%s] failed!\n",
284 attribute, values[0]));
285 ldap_value_free(values);
286 return False;
287 }
288
289 ldap_value_free(values);
290 #ifdef DEBUG_PASSWORDS
291 DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n", attribute, value));
292 #endif
293 return True;
294 }
295
296 BOOL smbldap_get_single_pstring (LDAP * ldap_struct, LDAPMessage * entry,
297 const char *attribute, pstring value)
298 {
299 return smbldap_get_single_attribute(ldap_struct, entry,
300 attribute, value,
301 sizeof(pstring));
302 }
303
304 char * smbldap_talloc_single_attribute(LDAP *ldap_struct, LDAPMessage *entry,
305 const char *attribute,
306 TALLOC_CTX *mem_ctx)
307 {
308 char **values;
309 char *result;
310
311 if (attribute == NULL) {
312 return NULL;
313 }
314
315 values = ldap_get_values(ldap_struct, entry, attribute);
316
317 if (values == NULL) {
318 DEBUG(10, ("attribute %s does not exist\n", attribute));
319 return NULL;
320 }
321
322 if (ldap_count_values(values) != 1) {
323 DEBUG(10, ("attribute %s has %d values, expected only one\n",
324 attribute, ldap_count_values(values)));
325 ldap_value_free(values);
326 return NULL;
327 }
328
329 if (pull_utf8_talloc(mem_ctx, &result, values[0]) == (size_t)-1) {
330 DEBUG(10, ("pull_utf8_talloc failed\n"));
331 ldap_value_free(values);
332 return NULL;
333 }
334
335 ldap_value_free(values);
336
337 #ifdef DEBUG_PASSWORDS
338 DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n",
339 attribute, result));
340 #endif
341 return result;
342 }
343
344 static int ldapmsg_destructor(LDAPMessage **result) {
345 ldap_msgfree(*result);
346 return 0;
347 }
348
349 void talloc_autofree_ldapmsg(TALLOC_CTX *mem_ctx, LDAPMessage *result)
350 {
351 LDAPMessage **handle;
352
353 if (result == NULL) {
354 return;
355 }
356
357 handle = TALLOC_P(mem_ctx, LDAPMessage *);
358 SMB_ASSERT(handle != NULL);
359
360 *handle = result;
361 talloc_set_destructor(handle, ldapmsg_destructor);
362 }
363
364 static int ldapmod_destructor(LDAPMod ***mod) {
365 ldap_mods_free(*mod, True);
366 return 0;
367 }
368
369 void talloc_autofree_ldapmod(TALLOC_CTX *mem_ctx, LDAPMod **mod)
370 {
371 LDAPMod ***handle;
372
373 if (mod == NULL) {
374 return;
375 }
376
377 handle = TALLOC_P(mem_ctx, LDAPMod **);
378 SMB_ASSERT(handle != NULL);
379
380 *handle = mod;
381 talloc_set_destructor(handle, ldapmod_destructor);
382 }
383
384 /************************************************************************
385 Routine to manage the LDAPMod structure array
386 manage memory used by the array, by each struct, and values
387 ***********************************************************************/
388
389 void smbldap_set_mod (LDAPMod *** modlist, int modop, const char *attribute, const char *value)
390 {
391 LDAPMod **mods;
392 int i;
393 int j;
394
395 mods = *modlist;
396
397 /* sanity checks on the mod values */
398
399 if (attribute == NULL || *attribute == '\0') {
400 return;
401 }
402
403 #if 0 /* commented out after discussion with abartlet. Do not reenable.
404 left here so other do not re-add similar code --jerry */
405 if (value == NULL || *value == '\0')
406 return;
407 #endif
408
409 if (mods == NULL) {
410 mods = SMB_MALLOC_P(LDAPMod *);
411 if (mods == NULL) {
412 smb_panic("smbldap_set_mod: out of memory!\n");
413 /* notreached. */
414 abort();
415 }
416 mods[0] = NULL;
417 }
418
419 for (i = 0; mods[i] != NULL; ++i) {
420 if (mods[i]->mod_op == modop && strequal(mods[i]->mod_type, attribute))
421 break;
422 }
423
424 if (mods[i] == NULL) {
425 mods = SMB_REALLOC_ARRAY (mods, LDAPMod *, i + 2);
426 if (mods == NULL) {
427 smb_panic("smbldap_set_mod: out of memory!\n");
428 /* notreached. */
429 abort();
430 }
431 mods[i] = SMB_MALLOC_P(LDAPMod);
432 if (mods[i] == NULL) {
433 smb_panic("smbldap_set_mod: out of memory!\n");
434 /* notreached. */
435 abort();
436 }
437 mods[i]->mod_op = modop;
438 mods[i]->mod_values = NULL;
439 mods[i]->mod_type = SMB_STRDUP(attribute);
440 mods[i + 1] = NULL;
441 }
442
443 if (value != NULL) {
444 char *utf8_value = NULL;
445
446 j = 0;
447 if (mods[i]->mod_values != NULL) {
448 for (; mods[i]->mod_values[j] != NULL; j++);
449 }
450 mods[i]->mod_values = SMB_REALLOC_ARRAY(mods[i]->mod_values, char *, j + 2);
451
452 if (mods[i]->mod_values == NULL) {
453 smb_panic("smbldap_set_mod: out of memory!\n");
454 /* notreached. */
455 abort();
456 }
457
458 if (push_utf8_allocate(&utf8_value, value) == (size_t)-1) {
459 smb_panic("smbldap_set_mod: String conversion failure!\n");
460 /* notreached. */
461 abort();
462 }
463
464 mods[i]->mod_values[j] = utf8_value;
465
466 mods[i]->mod_values[j + 1] = NULL;
467 }
468 *modlist = mods;
469 }
470
471 /**********************************************************************
472 Set attribute to newval in LDAP, regardless of what value the
473 attribute had in LDAP before.
474 *********************************************************************/
475
476 void smbldap_make_mod(LDAP *ldap_struct, LDAPMessage *existing,
477 LDAPMod ***mods,
478 const char *attribute, const char *newval)
479 {
480 char oldval[2048]; /* current largest allowed value is mungeddial */
481 BOOL existed;
482
483 if (attribute == NULL) {
484 /* This can actually happen for ldapsam_compat where we for
485 * example don't have a password history */
486 return;
487 }
488
489 if (existing != NULL) {
490 existed = smbldap_get_single_attribute(ldap_struct, existing, attribute, oldval, sizeof(oldval));
491 } else {
492 existed = False;
493 *oldval = '\0';
494 }
495
496 /* all of our string attributes are case insensitive */
497
498 if (existed && newval && (StrCaseCmp(oldval, newval) == 0)) {
499
500 /* Believe it or not, but LDAP will deny a delete and
501 an add at the same time if the values are the
502 same... */
503 DEBUG(10,("smbldap_make_mod: attribute |%s| not changed.\n", attribute));
504 return;
505 }
506
507 if (existed) {
508 /* There has been no value before, so don't delete it.
509 * Here's a possible race: We might end up with
510 * duplicate attributes */
511 /* By deleting exactly the value we found in the entry this
512 * should be race-free in the sense that the LDAP-Server will
513 * deny the complete operation if somebody changed the
514 * attribute behind our back. */
515 /* This will also allow modifying single valued attributes
516 * in Novell NDS. In NDS you have to first remove attribute and then
517 * you could add new value */
518
519 DEBUG(10,("smbldap_make_mod: deleting attribute |%s| values |%s|\n", attribute, oldval));
520 smbldap_set_mod(mods, LDAP_MOD_DELETE, attribute, oldval);
521 }
522
523 /* Regardless of the real operation (add or modify)
524 we add the new value here. We rely on deleting
525 the old value, should it exist. */
526
527 if ((newval != NULL) && (strlen(newval) > 0)) {
528 DEBUG(10,("smbldap_make_mod: adding attribute |%s| value |%s|\n", attribute, newval));
529 smbldap_set_mod(mods, LDAP_MOD_ADD, attribute, newval);
530 }
531 }
532
533 /**********************************************************************
534 Some varients of the LDAP rebind code do not pass in the third 'arg'
535 pointer to a void*, so we try and work around it by assuming that the
536 value of the 'LDAP *' pointer is the same as the one we had passed in
537 **********************************************************************/
538
539 struct smbldap_state_lookup {
540 LDAP *ld;
541 struct smbldap_state *smbldap_state;
542 struct smbldap_state_lookup *prev, *next;
543 };
544
545 static struct smbldap_state_lookup *smbldap_state_lookup_list;
546
547 static struct smbldap_state *smbldap_find_state(LDAP *ld)
548 {
549 struct smbldap_state_lookup *t;
550
551 for (t = smbldap_state_lookup_list; t; t = t->next) {
552 if (t->ld == ld) {
553 return t->smbldap_state;
554 }
555 }
556 return NULL;
557 }
558
559 static void smbldap_delete_state(struct smbldap_state *smbldap_state)
560 {
561 struct smbldap_state_lookup *t;
562
563 for (t = smbldap_state_lookup_list; t; t = t->next) {
564 if (t->smbldap_state == smbldap_state) {
565 DLIST_REMOVE(smbldap_state_lookup_list, t);
566 SAFE_FREE(t);
567 return;
568 }
569 }
570 }
571
572 static void smbldap_store_state(LDAP *ld, struct smbldap_state *smbldap_state)
573 {
574 struct smbldap_state *tmp_ldap_state;
575 struct smbldap_state_lookup *t;
576
577 if ((tmp_ldap_state = smbldap_find_state(ld))) {
578 SMB_ASSERT(tmp_ldap_state == smbldap_state);
579 return;
580 }
581
582 t = SMB_XMALLOC_P(struct smbldap_state_lookup);
583 ZERO_STRUCTP(t);
584
585 DLIST_ADD_END(smbldap_state_lookup_list, t, struct smbldap_state_lookup *);
586 t->ld = ld;
587 t->smbldap_state = smbldap_state;
588 }
589
590 /********************************************************************
591 start TLS on an existing LDAP connection
592 *******************************************************************/
593
594 int smb_ldap_start_tls(LDAP *ldap_struct, int version)
595 {
596 int rc;
597
598 if (lp_ldap_ssl() != LDAP_SSL_START_TLS) {
599 return LDAP_SUCCESS;
600 }
601
602 #ifdef LDAP_OPT_X_TLS
603 if (version != LDAP_VERSION3) {
604 DEBUG(0, ("Need LDAPv3 for Start TLS\n"));
605 return LDAP_OPERATIONS_ERROR;
606 }
607
608 if ((rc = ldap_start_tls_s (ldap_struct, NULL, NULL)) != LDAP_SUCCESS) {
609 DEBUG(0,("Failed to issue the StartTLS instruction: %s\n",
610 ldap_err2string(rc)));
611 return rc;
612 }
613
614 DEBUG (3, ("StartTLS issued: using a TLS connection\n"));
615 return LDAP_SUCCESS;
616 #else
617 DEBUG(0,("StartTLS not supported by LDAP client libraries!\n"));
618 return LDAP_OPERATIONS_ERROR;
619 #endif
620 }
621
622 /********************************************************************
623 setup a connection to the LDAP server based on a uri
624 *******************************************************************/
625
626 int smb_ldap_setup_conn(LDAP **ldap_struct, const char *uri)
627 {
628 int rc;
629
630 DEBUG(10, ("smb_ldap_setup_connection: %s\n", uri));
631
632 #ifdef HAVE_LDAP_INITIALIZE
633
634 rc = ldap_initialize(ldap_struct, uri);
635 if (rc) {
636 DEBUG(0, ("ldap_initialize: %s\n", ldap_err2string(rc)));
637 }
638
639 return rc;
640 #else
641
642 /* Parse the string manually */
643
644 {
645 int port = 0;
646 fstring protocol;
647 fstring host;
648 SMB_ASSERT(sizeof(protocol)>10 && sizeof(host)>254);
649
650
651 /* skip leading "URL:" (if any) */
652 if ( strnequal( uri, "URL:", 4 ) ) {
653 uri += 4;
654 }
655
656 sscanf(uri, "%10[^:]://%254[^:/]:%d", protocol, host, &port);
657
658 if (port == 0) {
659 if (strequal(protocol, "ldap")) {
660 port = LDAP_PORT;
661 } else if (strequal(protocol, "ldaps")) {
662 port = LDAPS_PORT;
663 } else {
664 DEBUG(0, ("unrecognised protocol (%s)!\n", protocol));
665 }
666 }
667
668 if ((*ldap_struct = ldap_init(host, port)) == NULL) {
669 DEBUG(0, ("ldap_init failed !\n"));
670 return LDAP_OPERATIONS_ERROR;
671 }
672
673 if (strequal(protocol, "ldaps")) {
674 #ifdef LDAP_OPT_X_TLS
675 int tls = LDAP_OPT_X_TLS_HARD;
676 if (ldap_set_option (*ldap_struct, LDAP_OPT_X_TLS, &tls) != LDAP_SUCCESS)
677 {
678 DEBUG(0, ("Failed to setup a TLS session\n"));
679 }
680
681 DEBUG(3,("LDAPS option set...!\n"));
682 #else
683 DEBUG(0,("smbldap_open_connection: Secure connection not supported by LDAP client libraries!\n"));
684 return LDAP_OPERATIONS_ERROR;
685 #endif /* LDAP_OPT_X_TLS */
686 }
687
688 }
689 #endif /* HAVE_LDAP_INITIALIZE */
690 return LDAP_SUCCESS;
691 }
692
693 /********************************************************************
694 try to upgrade to Version 3 LDAP if not already, in either case return current
695 version
696 *******************************************************************/
697
698 int smb_ldap_upgrade_conn(LDAP *ldap_struct, int *new_version)
699 {
700 int version;
701 int rc;
702
703 /* assume the worst */
704 *new_version = LDAP_VERSION2;
705
706 rc = ldap_get_option(ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
707 if (rc) {
708 return rc;
709 }
710
711 if (version == LDAP_VERSION3) {
712 *new_version = LDAP_VERSION3;
713 return LDAP_SUCCESS;
714 }
715
716 /* try upgrade */
717 version = LDAP_VERSION3;
718 rc = ldap_set_option (ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
719 if (rc) {
720 return rc;
721 }
722
723 *new_version = LDAP_VERSION3;
724 return LDAP_SUCCESS;
725 }
726
727 /*******************************************************************
728 open a connection to the ldap server (just until the bind)
729 ******************************************************************/
730
731 int smb_ldap_setup_full_conn(LDAP **ldap_struct, const char *uri)
732 {
733 int rc, version;
734
735 rc = smb_ldap_setup_conn(ldap_struct, uri);
736 if (rc) {
737 return rc;
738 }
739
740 rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
741 if (rc) {
742 return rc;
743 }
744
745 rc = smb_ldap_start_tls(*ldap_struct, version);
746 if (rc) {
747 return rc;
748 }
749
750 return LDAP_SUCCESS;
751 }
752
753 /*******************************************************************
754 open a connection to the ldap server.
755 ******************************************************************/
756 static int smbldap_open_connection (struct smbldap_state *ldap_state)
757
758 {
759 int rc = LDAP_SUCCESS;
760 int version;
761 LDAP **ldap_struct = &ldap_state->ldap_struct;
762
763 rc = smb_ldap_setup_conn(ldap_struct, ldap_state->uri);
764 if (rc) {
765 return rc;
766 }
767
768 /* Store the LDAP pointer in a lookup list */
769
770 smbldap_store_state(*ldap_struct, ldap_state);
771
772 /* Upgrade to LDAPv3 if possible */
773
774 rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
775 if (rc) {
776 return rc;
777 }
778
779 /* Start TLS if required */
780
781 rc = smb_ldap_start_tls(*ldap_struct, version);
782 if (rc) {
783 return rc;
784 }
785
786 DEBUG(2, ("smbldap_open_connection: connection opened\n"));
787 return rc;
788 }
789
790 /*******************************************************************
791 a rebind function for authenticated referrals
792 This version takes a void* that we can shove useful stuff in :-)
793 ******************************************************************/
794 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
795 #else
796 static int rebindproc_with_state (LDAP * ld, char **whop, char **credp,
797 int *methodp, int freeit, void *arg)
798 {
799 struct smbldap_state *ldap_state = arg;
800
801 /** @TODO Should we be doing something to check what servers we rebind to?
802 Could we get a referral to a machine that we don't want to give our
803 username and password to? */
804
805 if (freeit) {
806 SAFE_FREE(*whop);
807 if (*credp) {
808 memset(*credp, '\0', strlen(*credp));
809 }
810 SAFE_FREE(*credp);
811 } else {
812 DEBUG(5,("rebind_proc_with_state: Rebinding as \"%s\"\n",
813 ldap_state->bind_dn?ldap_state->bind_dn:"[Anonymous bind]"));
814
815 if (ldap_state->anonymous) {
816 *whop = NULL;
817 *credp = NULL;
818 } else {
819 *whop = SMB_STRDUP(ldap_state->bind_dn);
820 if (!*whop) {
821 return LDAP_NO_MEMORY;
822 }
823 *credp = SMB_STRDUP(ldap_state->bind_secret);
824 if (!*credp) {
825 SAFE_FREE(*whop);
826 return LDAP_NO_MEMORY;
827 }
828 }
829 *methodp = LDAP_AUTH_SIMPLE;
830 }
831
832 GetTimeOfDay(&ldap_state->last_rebind);
833
834 return 0;
835 }
836 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
837
838 /*******************************************************************
839 a rebind function for authenticated referrals
840 This version takes a void* that we can shove useful stuff in :-)
841 and actually does the connection.
842 ******************************************************************/
843 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
844 static int rebindproc_connect_with_state (LDAP *ldap_struct,
845 LDAP_CONST char *url,
846 ber_tag_t request,
847 ber_int_t msgid, void *arg)
848 {
849 struct smbldap_state *ldap_state =
850 (struct smbldap_state *)arg;
851 int rc;
852 int version;
853
854 DEBUG(5,("rebindproc_connect_with_state: Rebinding to %s as \"%s\"\n",
855 url, ldap_state->bind_dn?ldap_state->bind_dn:"[Anonymous bind]"));
856
857 /* call START_TLS again (ldaps:// is handled by the OpenLDAP library
858 * itself) before rebinding to another LDAP server to avoid to expose
859 * our credentials. At least *try* to secure the connection - Guenther */
860
861 smb_ldap_upgrade_conn(ldap_struct, &version);
862 smb_ldap_start_tls(ldap_struct, version);
863
864 /** @TODO Should we be doing something to check what servers we rebind to?
865 Could we get a referral to a machine that we don't want to give our
866 username and password to? */
867
868 rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
869
870 /* only set the last rebind timestamp when we did rebind after a
871 * non-read LDAP operation. That way we avoid the replication sleep
872 * after a simple redirected search operation - Guenther */
873
874 switch (request) {
875
876 case LDAP_REQ_MODIFY:
877 case LDAP_REQ_ADD:
878 case LDAP_REQ_DELETE:
879 case LDAP_REQ_MODDN:
880 case LDAP_REQ_EXTENDED:
881 DEBUG(10,("rebindproc_connect_with_state: "
882 "setting last_rebind timestamp "
883 "(req: 0x%02x)\n", (unsigned int)request));
884 GetTimeOfDay(&ldap_state->last_rebind);
885 break;
886 default:
887 ZERO_STRUCT(ldap_state->last_rebind);
888 break;
889 }
890
891 return rc;
892 }
893 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
894
895 /*******************************************************************
896 Add a rebind function for authenticated referrals
897 ******************************************************************/
898 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
899 #else
900 # if LDAP_SET_REBIND_PROC_ARGS == 2
901 static int rebindproc (LDAP *ldap_struct, char **whop, char **credp,
902 int *method, int freeit )
903 {
904 struct smbldap_state *ldap_state = smbldap_find_state(ldap_struct);
905
906 return rebindproc_with_state(ldap_struct, whop, credp,
907 method, freeit, ldap_state);
908
909 }
910 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
911 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
912
913 /*******************************************************************
914 a rebind function for authenticated referrals
915 this also does the connection, but no void*.
916 ******************************************************************/
917 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
918 # if LDAP_SET_REBIND_PROC_ARGS == 2
919 static int rebindproc_connect (LDAP * ld, LDAP_CONST char *url, int request,
920 ber_int_t msgid)
921 {
922 struct smbldap_state *ldap_state = smbldap_find_state(ld);
923
924 return rebindproc_connect_with_state(ld, url, (ber_tag_t)request, msgid,
925 ldap_state);
926 }
927 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
928 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
929
930 /*******************************************************************
931 connect to the ldap server under system privilege.
932 ******************************************************************/
933 static int smbldap_connect_system(struct smbldap_state *ldap_state, LDAP * ldap_struct)
934 {
935 int rc;
936 int version;
937
938 if (!ldap_state->anonymous && !ldap_state->bind_dn) {
939
940 /* get the default dn and password only if they are not set already */
941 if (!fetch_ldap_pw(&ldap_state->bind_dn, &ldap_state->bind_secret)) {
942 DEBUG(0, ("ldap_connect_system: Failed to retrieve password from secrets.tdb\n"));
943 return LDAP_INVALID_CREDENTIALS;
944 }
945 }
946
947 /* removed the sasl_bind_s "EXTERNAL" stuff, as my testsuite
948 (OpenLDAP) doesnt' seem to support it */
949
950 DEBUG(10,("ldap_connect_system: Binding to ldap server %s as \"%s\"\n",
951 ldap_state->uri, ldap_state->bind_dn));
952
953 #ifdef HAVE_LDAP_SET_REBIND_PROC
954 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
955 # if LDAP_SET_REBIND_PROC_ARGS == 2
956 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect);
957 # endif
958 # if LDAP_SET_REBIND_PROC_ARGS == 3
959 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect_with_state, (void *)ldap_state);
960 # endif
961 #else /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
962 # if LDAP_SET_REBIND_PROC_ARGS == 2
963 ldap_set_rebind_proc(ldap_struct, &rebindproc);
964 # endif
965 # if LDAP_SET_REBIND_PROC_ARGS == 3
966 ldap_set_rebind_proc(ldap_struct, &rebindproc_with_state, (void *)ldap_state);
967 # endif
968 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
969 #endif
970
971 rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
972
973 if (rc != LDAP_SUCCESS) {
974 char *ld_error = NULL;
975 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
976 &ld_error);
977 DEBUG(ldap_state->num_failures ? 2 : 0,
978 ("failed to bind to server %s with dn=\"%s\" Error: %s\n\t%s\n",
979 ldap_state->uri,
980 ldap_state->bind_dn ? ldap_state->bind_dn : "[Anonymous bind]",
981 ldap_err2string(rc),
982 ld_error ? ld_error : "(unknown)"));
983 SAFE_FREE(ld_error);
984 ldap_state->num_failures++;
985 return rc;
986 }
987
988 ldap_state->num_failures = 0;
989 ldap_state->paged_results = False;
990
991 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
992
993 if (smbldap_has_control(ldap_state->ldap_struct, ADS_PAGE_CTL_OID) && version == 3) {
994 ldap_state->paged_results = True;
995 }
996
997 DEBUG(3, ("ldap_connect_system: succesful connection to the LDAP server\n"));
998 DEBUGADD(10, ("ldap_connect_system: LDAP server %s support paged results\n",
999 ldap_state->paged_results ? "does" : "does not"));
1000 return rc;
1001 }
1002
1003 /**********************************************************************
1004 Connect to LDAP server (called before every ldap operation)
1005 *********************************************************************/
1006 static int smbldap_open(struct smbldap_state *ldap_state)
1007 {
1008 int rc, opt_rc;
1009 BOOL reopen = False;
1010 SMB_ASSERT(ldap_state);
1011
1012 #ifndef NO_LDAP_SECURITY
1013 if (geteuid() != 0) {
1014 DEBUG(0, ("smbldap_open: cannot access LDAP when not root..\n"));
1015 return LDAP_INSUFFICIENT_ACCESS;
1016 }
1017 #endif
1018
1019 if ((ldap_state->ldap_struct != NULL) && ((ldap_state->last_ping + SMBLDAP_DONT_PING_TIME) < time(NULL))) {
1020
1021 #ifdef HAVE_UNIXSOCKET
1022 struct sockaddr_un addr;
1023 #else
1024 struct sockaddr addr;
1025 #endif
1026 socklen_t len = sizeof(addr);
1027 int sd;
1028
1029 opt_rc = ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_DESC, &sd);
1030 if (opt_rc == 0 && (getpeername(sd, (struct sockaddr *) &addr, &len)) < 0 )
1031 reopen = True;
1032
1033 #ifdef HAVE_UNIXSOCKET
1034 if (opt_rc == 0 && addr.sun_family == AF_UNIX)
1035 reopen = True;
1036 #endif
1037 if (reopen) {
1038 /* the other end has died. reopen. */
1039 ldap_unbind(ldap_state->ldap_struct);
1040 ldap_state->ldap_struct = NULL;
1041 ldap_state->last_ping = (time_t)0;
1042 } else {
1043 ldap_state->last_ping = time(NULL);
1044 }
1045 }
1046
1047 if (ldap_state->ldap_struct != NULL) {
1048 DEBUG(11,("smbldap_open: already connected to the LDAP server\n"));
1049 return LDAP_SUCCESS;
1050 }
1051
1052 if ((rc = smbldap_open_connection(ldap_state))) {
1053 return rc;
1054 }
1055
1056 if ((rc = smbldap_connect_system(ldap_state, ldap_state->ldap_struct))) {
1057 ldap_unbind(ldap_state->ldap_struct);
1058 ldap_state->ldap_struct = NULL;
1059 return rc;
1060 }
1061
1062
1063 ldap_state->last_ping = time(NULL);
1064 ldap_state->pid = sys_getpid();
1065 DEBUG(4,("The LDAP server is succesfully connected\n"));
1066
1067 return LDAP_SUCCESS;
1068 }
1069
1070 /**********************************************************************
1071 Disconnect from LDAP server
1072 *********************************************************************/
1073 static NTSTATUS smbldap_close(struct smbldap_state *ldap_state)
1074 {
1075 if (!ldap_state)
1076 return NT_STATUS_INVALID_PARAMETER;
1077
1078 if (ldap_state->ldap_struct != NULL) {
1079 ldap_unbind(ldap_state->ldap_struct);
1080 ldap_state->ldap_struct = NULL;
1081 }
1082
1083 smbldap_delete_state(ldap_state);
1084
1085 DEBUG(5,("The connection to the LDAP server was closed\n"));
1086 /* maybe free the results here --metze */
1087
1088 return NT_STATUS_OK;
1089 }
1090
1091 static BOOL got_alarm;
1092
1093 static void (*old_handler)(int);
1094
1095 static void gotalarm_sig(int dummy)
1096 {
1097 got_alarm = True;
1098 }
1099
1100 static int another_ldap_try(struct smbldap_state *ldap_state, int *rc,
1101 int *attempts, time_t endtime)
1102 {
1103 time_t now = time(NULL);
1104 int open_rc = LDAP_SERVER_DOWN;
1105
1106 if (*rc != LDAP_SERVER_DOWN)
1107 goto no_next;
1108
1109 if (now >= endtime) {
1110 smbldap_close(ldap_state);
1111 *rc = LDAP_TIMEOUT;
1112 goto no_next;
1113 }
1114
1115 if (*attempts == 0) {
1116 got_alarm = False;
1117 old_handler = CatchSignal(SIGALRM, gotalarm_sig);
1118 alarm(endtime - now);
1119
1120 if (ldap_state->pid != sys_getpid())
1121 smbldap_close(ldap_state);
1122 }
1123
1124 while (1) {
1125
1126 if (*attempts != 0)
1127 smb_msleep(1000);
1128
1129 *attempts += 1;
1130
1131 open_rc = smbldap_open(ldap_state);
1132
1133 if (open_rc == LDAP_SUCCESS) {
1134 ldap_state->last_use = now;
1135 return True;
1136 }
1137
1138 if (open_rc == LDAP_INSUFFICIENT_ACCESS) {
1139 /* The fact that we are non-root or any other
1140 * access-denied condition will not change in the next
1141 * round of trying */
1142 *rc = open_rc;
1143 break;
1144 }
1145
1146 if (got_alarm) {
1147 *rc = LDAP_TIMEOUT;
1148 break;
1149 }
1150
1151 if (open_rc != LDAP_SUCCESS) {
1152 DEBUG(1, ("Connection to LDAP server failed for the "
1153 "%d try!\n", *attempts));
1154 }
1155 }
1156
1157 no_next:
1158 CatchSignal(SIGALRM, old_handler);
1159 alarm(0);
1160 ldap_state->last_use = now;
1161 return False;
1162 }
1163
1164 /*********************************************************************
1165 ********************************************************************/
1166
1167 static int smbldap_search_ext(struct smbldap_state *ldap_state,
1168 const char *base, int scope, const char *filter,
1169 const char *attrs[], int attrsonly,
1170 LDAPControl **sctrls, LDAPControl **cctrls,
1171 int sizelimit, LDAPMessage **res)
1172 {
1173 int rc = LDAP_SERVER_DOWN;
1174 int attempts = 0;
1175 char *utf8_filter;
1176 time_t endtime = time(NULL)+lp_ldap_timeout();
1177 struct timeval timeout;
1178
1179 SMB_ASSERT(ldap_state);
1180
1181 DEBUG(5,("smbldap_search_ext: base => [%s], filter => [%s], "
1182 "scope => [%d]\n", base, filter, scope));
1183
1184 if (ldap_state->last_rebind.tv_sec > 0) {
1185 struct timeval tval;
1186 SMB_BIG_INT tdiff = 0;
1187 int sleep_time = 0;
1188
1189 ZERO_STRUCT(tval);
1190 GetTimeOfDay(&tval);
1191
1192 tdiff = usec_time_diff(&tval, &ldap_state->last_rebind);
1193 tdiff /= 1000; /* Convert to milliseconds. */
1194
1195 sleep_time = lp_ldap_replication_sleep()-(int)tdiff;
1196 sleep_time = MIN(sleep_time, MAX_LDAP_REPLICATION_SLEEP_TIME);
1197
1198 if (sleep_time > 0) {
1199 /* we wait for the LDAP replication */
1200 DEBUG(5,("smbldap_search_ext: waiting %d milliseconds "
1201 "for LDAP replication.\n",sleep_time));
1202 smb_msleep(sleep_time);
1203 DEBUG(5,("smbldap_search_ext: go on!\n"));
1204 }
1205 ZERO_STRUCT(ldap_state->last_rebind);
1206 }
1207
1208 if (push_utf8_allocate(&utf8_filter, filter) == (size_t)-1) {
1209 return LDAP_NO_MEMORY;
1210 }
1211
1212 /* Setup timeout for the ldap_search_ext_s call - local and remote. */
1213 timeout.tv_sec = lp_ldap_timeout();
1214 timeout.tv_usec = 0;
1215
1216 /* Setup alarm timeout.... Do we need both of these ? JRA.
1217 * Yes, I think we do need both of these. The server timeout only
1218 * covers the case where the server's operation takes too long. It
1219 * does not cover the case where the request hangs on its way to the
1220 * server. The server side timeout is not strictly necessary, it's
1221 * just a bit more kind to the server. VL. */
1222
1223 got_alarm = 0;
1224 CatchSignal(SIGALRM, SIGNAL_CAST gotalarm_sig);
1225 alarm(lp_ldap_timeout());
1226 /* End setup timeout. */
1227
1228 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1229 rc = ldap_search_ext_s(ldap_state->ldap_struct, base, scope,
1230 utf8_filter,
1231 CONST_DISCARD(char **, attrs),
1232 attrsonly, sctrls, cctrls, &timeout,
1233 sizelimit, res);
1234 if (rc != LDAP_SUCCESS) {
1235 char *ld_error = NULL;
1236 int ld_errno;
1237
1238 ldap_get_option(ldap_state->ldap_struct,
1239 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1240
1241 ldap_get_option(ldap_state->ldap_struct,
1242 LDAP_OPT_ERROR_STRING, &ld_error);
1243 DEBUG(10, ("Failed search for base: %s, error: %d (%s) "
1244 "(%s)\n", base, ld_errno,
1245 ldap_err2string(rc),
1246 ld_error ? ld_error : "unknown"));
1247 SAFE_FREE(ld_error);
1248
1249 if (ld_errno == LDAP_SERVER_DOWN) {
1250 ldap_unbind(ldap_state->ldap_struct);
1251 ldap_state->ldap_struct = NULL;
1252 }
1253 }
1254 }
1255
1256 SAFE_FREE(utf8_filter);
1257
1258 /* Teardown timeout. */
1259 CatchSignal(SIGALRM, SIGNAL_CAST SIG_IGN);
1260 alarm(0);
1261
1262 if (got_alarm != 0)
1263 return LDAP_TIMELIMIT_EXCEEDED;
1264
1265 return rc;
1266 }
1267
1268 int smbldap_search(struct smbldap_state *ldap_state,
1269 const char *base, int scope, const char *filter,
1270 const char *attrs[], int attrsonly,
1271 LDAPMessage **res)
1272 {
1273 return smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1274 attrsonly, NULL, NULL, LDAP_NO_LIMIT, res);
1275 }
1276
1277 int smbldap_search_paged(struct smbldap_state *ldap_state,
1278 const char *base, int scope, const char *filter,
1279 const char **attrs, int attrsonly, int pagesize,
1280 LDAPMessage **res, void **cookie)
1281 {
1282 LDAPControl pr;
1283 LDAPControl **rcontrols;
1284 LDAPControl *controls[2] = { NULL, NULL};
1285 BerElement *cookie_be = NULL;
1286 struct berval *cookie_bv = NULL;
1287 int tmp = 0, i, rc;
1288 BOOL critical = True;
1289
1290 *res = NULL;
1291
1292 DEBUG(3,("smbldap_search_paged: base => [%s], filter => [%s],"
1293 "scope => [%d], pagesize => [%d]\n",
1294 base, filter, scope, pagesize));
1295
1296 cookie_be = ber_alloc_t(LBER_USE_DER);
1297 if (cookie_be == NULL) {
1298 DEBUG(0,("smbldap_create_page_control: ber_alloc_t returns "
1299 "NULL\n"));
1300 return LDAP_NO_MEMORY;
1301 }
1302
1303 /* construct cookie */
1304 if (*cookie != NULL) {
1305 ber_printf(cookie_be, "{iO}", (ber_int_t) pagesize, *cookie);
1306 ber_bvfree((struct berval *)*cookie); /* don't need it from last time */
1307 *cookie = NULL;
1308 } else {
1309 ber_printf(cookie_be, "{io}", (ber_int_t) pagesize, "", 0);
1310 }
1311 ber_flatten(cookie_be, &cookie_bv);
1312
1313 pr.ldctl_oid = CONST_DISCARD(char *, ADS_PAGE_CTL_OID);
1314 pr.ldctl_iscritical = (char) critical;
1315 pr.ldctl_value.bv_len = cookie_bv->bv_len;
1316 pr.ldctl_value.bv_val = cookie_bv->bv_val;
1317
1318 controls[0] = &pr;
1319 controls[1] = NULL;
1320
1321 rc = smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1322 0, controls, NULL, LDAP_NO_LIMIT, res);
1323
1324 ber_free(cookie_be, 1);
1325 ber_bvfree(cookie_bv);
1326
1327 if (rc != 0) {
1328 DEBUG(3,("smbldap_search_paged: smbldap_search_ext(%s) "
1329 "failed with [%s]\n", filter, ldap_err2string(rc)));
1330 goto done;
1331 }
1332
1333 DEBUG(3,("smbldap_search_paged: search was successfull\n"));
1334
1335 rc = ldap_parse_result(ldap_state->ldap_struct, *res, NULL, NULL,
1336 NULL, NULL, &rcontrols, 0);
1337 if (rc != 0) {
1338 DEBUG(3,("smbldap_search_paged: ldap_parse_result failed " \
1339 "with [%s]\n", ldap_err2string(rc)));
1340 goto done;
1341 }
1342
1343 if (rcontrols == NULL)
1344 goto done;
1345
1346 for (i=0; rcontrols[i]; i++) {
1347
1348 if (strcmp(ADS_PAGE_CTL_OID, rcontrols[i]->ldctl_oid) != 0)
1349 continue;
1350
1351 cookie_be = ber_init(&rcontrols[i]->ldctl_value);
1352 ber_scanf(cookie_be,"{iO}", &tmp, &cookie_bv);
1353 /* the berval is the cookie, but must be freed when it is all
1354 done */
1355 if (cookie_bv->bv_len)
1356 *cookie=ber_bvdup(cookie_bv);
1357 else
1358 *cookie=NULL;
1359 ber_bvfree(cookie_bv);
1360 ber_free(cookie_be, 1);
1361 break;
1362 }
1363 ldap_controls_free(rcontrols);
1364 done:
1365 return rc;
1366 }
1367
1368 int smbldap_modify(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1369 {
1370 int rc = LDAP_SERVER_DOWN;
1371 int attempts = 0;
1372 char *utf8_dn;
1373 time_t endtime = time(NULL)+lp_ldap_timeout();
1374
1375 SMB_ASSERT(ldap_state);
1376
1377 DEBUG(5,("smbldap_modify: dn => [%s]\n", dn ));
1378
1379 if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1380 return LDAP_NO_MEMORY;
1381 }
1382
1383 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1384 rc = ldap_modify_s(ldap_state->ldap_struct, utf8_dn, attrs);
1385 if (rc != LDAP_SUCCESS) {
1386 char *ld_error = NULL;
1387 int ld_errno;
1388
1389 ldap_get_option(ldap_state->ldap_struct,
1390 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1391
1392 ldap_get_option(ldap_state->ldap_struct,
1393 LDAP_OPT_ERROR_STRING, &ld_error);
1394 DEBUG(10, ("Failed to modify dn: %s, error: %d (%s) "
1395 "(%s)\n", dn, ld_errno,
1396 ldap_err2string(rc),
1397 ld_error ? ld_error : "unknown"));
1398 SAFE_FREE(ld_error);
1399
1400 if (ld_errno == LDAP_SERVER_DOWN) {
1401 ldap_unbind(ldap_state->ldap_struct);
1402 ldap_state->ldap_struct = NULL;
1403 }
1404 }
1405 }
1406
1407 SAFE_FREE(utf8_dn);
1408 return rc;
1409 }
1410
1411 int smbldap_add(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1412 {
1413 int rc = LDAP_SERVER_DOWN;
1414 int attempts = 0;
1415 char *utf8_dn;
1416 time_t endtime = time(NULL)+lp_ldap_timeout();
1417
1418 SMB_ASSERT(ldap_state);
1419
1420 DEBUG(5,("smbldap_add: dn => [%s]\n", dn ));
1421
1422 if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1423 return LDAP_NO_MEMORY;
1424 }
1425
1426 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1427 rc = ldap_add_s(ldap_state->ldap_struct, utf8_dn, attrs);
1428 if (rc != LDAP_SUCCESS) {
1429 char *ld_error = NULL;
1430 int ld_errno;
1431
1432 ldap_get_option(ldap_state->ldap_struct,
1433 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1434
1435 ldap_get_option(ldap_state->ldap_struct,
1436 LDAP_OPT_ERROR_STRING, &ld_error);
1437 DEBUG(10, ("Failed to add dn: %s, error: %d (%s) "
1438 "(%s)\n", dn, ld_errno,
1439 ldap_err2string(rc),
1440 ld_error ? ld_error : "unknown"));
1441 SAFE_FREE(ld_error);
1442
1443 if (ld_errno == LDAP_SERVER_DOWN) {
1444 ldap_unbind(ldap_state->ldap_struct);
1445 ldap_state->ldap_struct = NULL;
1446 }
1447 }
1448 }
1449
1450 SAFE_FREE(utf8_dn);
1451 return rc;
1452 }
1453
1454 int smbldap_delete(struct smbldap_state *ldap_state, const char *dn)
1455 {
1456 int rc = LDAP_SERVER_DOWN;
1457 int attempts = 0;
1458 char *utf8_dn;
1459 time_t endtime = time(NULL)+lp_ldap_timeout();
1460
1461 SMB_ASSERT(ldap_state);
1462
1463 DEBUG(5,("smbldap_delete: dn => [%s]\n", dn ));
1464
1465 if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1466 return LDAP_NO_MEMORY;
1467 }
1468
1469 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1470 rc = ldap_delete_s(ldap_state->ldap_struct, utf8_dn);
1471 if (rc != LDAP_SUCCESS) {
1472 char *ld_error = NULL;
1473 int ld_errno;
1474
1475 ldap_get_option(ldap_state->ldap_struct,
1476 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1477
1478 ldap_get_option(ldap_state->ldap_struct,
1479 LDAP_OPT_ERROR_STRING, &ld_error);
1480 DEBUG(10, ("Failed to delete dn: %s, error: %d (%s) "
1481 "(%s)\n", dn, ld_errno,
1482 ldap_err2string(rc),
1483 ld_error ? ld_error : "unknown"));
1484 SAFE_FREE(ld_error);
1485
1486 if (ld_errno == LDAP_SERVER_DOWN) {
1487 ldap_unbind(ldap_state->ldap_struct);
1488 ldap_state->ldap_struct = NULL;
1489 }
1490 }
1491 }
1492
1493 SAFE_FREE(utf8_dn);
1494 return rc;
1495 }
1496
1497 int smbldap_extended_operation(struct smbldap_state *ldap_state,
1498 LDAP_CONST char *reqoid, struct berval *reqdata,
1499 LDAPControl **serverctrls, LDAPControl **clientctrls,
1500 char **retoidp, struct berval **retdatap)
1501 {
1502 int rc = LDAP_SERVER_DOWN;
1503 int attempts = 0;
1504 time_t endtime = time(NULL)+lp_ldap_timeout();
1505
1506 if (!ldap_state)
1507 return (-1);
1508
1509 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1510 rc = ldap_extended_operation_s(ldap_state->ldap_struct, reqoid,
1511 reqdata, serverctrls,
1512 clientctrls, retoidp, retdatap);
1513 if (rc != LDAP_SUCCESS) {
1514 char *ld_error = NULL;
1515 int ld_errno;
1516
1517 ldap_get_option(ldap_state->ldap_struct,
1518 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1519
1520 ldap_get_option(ldap_state->ldap_struct,
1521 LDAP_OPT_ERROR_STRING, &ld_error);
1522 DEBUG(10, ("Extended operation failed with error: "
1523 "%d (%s) (%s)\n", ld_errno,
1524 ldap_err2string(rc),
1525 ld_error ? ld_error : "unknown"));
1526 SAFE_FREE(ld_error);
1527
1528 if (ld_errno == LDAP_SERVER_DOWN) {
1529 ldap_unbind(ldap_state->ldap_struct);
1530 ldap_state->ldap_struct = NULL;
1531 }
1532 }
1533 }
1534
1535 return rc;
1536 }
1537
1538 /*******************************************************************
1539 run the search by name.
1540 ******************************************************************/
1541 int smbldap_search_suffix (struct smbldap_state *ldap_state,
1542 const char *filter, const char **search_attr,
1543 LDAPMessage ** result)
1544 {
1545 return smbldap_search(ldap_state, lp_ldap_suffix(), LDAP_SCOPE_SUBTREE,
1546 filter, search_attr, 0, result);
1547 }
1548
1549 static void smbldap_idle_fn(void **data, time_t *interval, time_t now)
1550 {
1551 struct smbldap_state *state = (struct smbldap_state *)(*data);
1552
1553 if (state->ldap_struct == NULL) {
1554 DEBUG(10,("ldap connection not connected...\n"));
1555 return;
1556 }
1557
1558 if ((state->last_use+SMBLDAP_IDLE_TIME) > now) {
1559 DEBUG(10,("ldap connection not idle...\n"));
1560 return;
1561 }
1562
1563 DEBUG(7,("ldap connection idle...closing connection\n"));
1564 smbldap_close(state);
1565 }
1566
1567 /**********************************************************************
1568 Housekeeping
1569 *********************************************************************/
1570
1571 void smbldap_free_struct(struct smbldap_state **ldap_state)
1572 {
1573 smbldap_close(*ldap_state);
1574
1575 if ((*ldap_state)->bind_secret) {
1576 memset((*ldap_state)->bind_secret, '\0', strlen((*ldap_state)->bind_secret));
1577 }
1578
1579 SAFE_FREE((*ldap_state)->bind_dn);
1580 SAFE_FREE((*ldap_state)->bind_secret);
1581
1582 smb_unregister_idle_event((*ldap_state)->event_id);
1583
1584 *ldap_state = NULL;
1585
1586 /* No need to free any further, as it is talloc()ed */
1587 }
1588
1589
1590 /**********************************************************************
1591 Intitalise the 'general' ldap structures, on which ldap operations may be conducted
1592 *********************************************************************/
1593
1594 NTSTATUS smbldap_init(TALLOC_CTX *mem_ctx, const char *location, struct smbldap_state **smbldap_state)
1595 {
1596 *smbldap_state = TALLOC_ZERO_P(mem_ctx, struct smbldap_state);
1597 if (!*smbldap_state) {
1598 DEBUG(0, ("talloc() failed for ldapsam private_data!\n"));
1599 return NT_STATUS_NO_MEMORY;
1600 }
1601
1602 if (location) {
1603 (*smbldap_state)->uri = talloc_strdup(mem_ctx, location);
1604 } else {
1605 (*smbldap_state)->uri = "ldap://localhost";
1606 }
1607
1608 (*smbldap_state)->event_id =
1609 smb_register_idle_event(smbldap_idle_fn, (void *)(*smbldap_state),
1610 SMBLDAP_IDLE_TIME);
1611
1612 if ((*smbldap_state)->event_id == SMB_EVENT_ID_INVALID) {
1613 DEBUG(0,("Failed to register LDAP idle event!\n"));
1614 return NT_STATUS_INVALID_HANDLE;
1615 }
1616
1617 return NT_STATUS_OK;
1618 }
1619
1620 /*******************************************************************
1621 Return a copy of the DN for a LDAPMessage. Convert from utf8 to CH_UNIX.
1622 ********************************************************************/
1623 char *smbldap_get_dn(LDAP *ld, LDAPMessage *entry)
1624 {
1625 char *utf8_dn, *unix_dn;
1626
1627 utf8_dn = ldap_get_dn(ld, entry);
1628 if (!utf8_dn) {
1629 DEBUG (5, ("smbldap_get_dn: ldap_get_dn failed\n"));
1630 return NULL;
1631 }
1632 if (pull_utf8_allocate(&unix_dn, utf8_dn) == (size_t)-1) {
1633 DEBUG (0, ("smbldap_get_dn: String conversion failure utf8 [%s]\n", utf8_dn));
1634 return NULL;
1635 }
1636 ldap_memfree(utf8_dn);
1637 return unix_dn;
1638 }
1639
1640 const char *smbldap_talloc_dn(TALLOC_CTX *mem_ctx, LDAP *ld,
1641 LDAPMessage *entry)
1642 {
1643 char *utf8_dn, *unix_dn;
1644
1645 utf8_dn = ldap_get_dn(ld, entry);
1646 if (!utf8_dn) {
1647 DEBUG (5, ("smbldap_get_dn: ldap_get_dn failed\n"));
1648 return NULL;
1649 }
1650 if (pull_utf8_talloc(mem_ctx, &unix_dn, utf8_dn) == (size_t)-1) {
1651 DEBUG (0, ("smbldap_get_dn: String conversion failure utf8 "
1652 "[%s]\n", utf8_dn));
1653 return NULL;
1654 }
1655 ldap_memfree(utf8_dn);
1656 return unix_dn;
1657 }
1658
1659 /*******************************************************************
1660 Check if root-dse has a certain Control or Extension
1661 ********************************************************************/
1662
1663 static BOOL smbldap_check_root_dse(LDAP *ld, const char **attrs, const char *value)
1664 {
1665 LDAPMessage *msg = NULL;
1666 LDAPMessage *entry = NULL;
1667 char **values = NULL;
1668 int rc, num_result, num_values, i;
1669 BOOL result = False;
1670
1671 if (!attrs[0]) {
1672 DEBUG(3,("smbldap_check_root_dse: nothing to look for\n"));
1673 return False;
1674 }
1675
1676 if (!strequal(attrs[0], "supportedExtension") &&
1677 !strequal(attrs[0], "supportedControl") &&
1678 !strequal(attrs[0], "namingContexts")) {
1679 DEBUG(3,("smbldap_check_root_dse: no idea what to query root-dse for: %s ?\n", attrs[0]));
1680 return False;
1681 }
1682
1683 rc = ldap_search_s(ld, "", LDAP_SCOPE_BASE,
1684 "(objectclass=*)", CONST_DISCARD(char **, attrs), 0 , &msg);
1685
1686 if (rc != LDAP_SUCCESS) {
1687 DEBUG(3,("smbldap_check_root_dse: Could not search rootDSE\n"));
1688 return False;
1689 }
1690
1691 num_result = ldap_count_entries(ld, msg);
1692
1693 if (num_result != 1) {
1694 DEBUG(3,("smbldap_check_root_dse: Expected one rootDSE, got %d\n", num_result));
1695 goto done;
1696 }
1697
1698 entry = ldap_first_entry(ld, msg);
1699
1700 if (entry == NULL) {
1701 DEBUG(3,("smbldap_check_root_dse: Could not retrieve rootDSE\n"));
1702 goto done;
1703 }
1704
1705 values = ldap_get_values(ld, entry, attrs[0]);
1706
1707 if (values == NULL) {
1708 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not support any %s\n", attrs[0]));
1709 goto done;
1710 }
1711
1712 num_values = ldap_count_values(values);
1713
1714 if (num_values == 0) {
1715 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not have any %s\n", attrs[0]));
1716 goto done;
1717 }
1718
1719 for (i=0; i<num_values; i++) {
1720 if (strcmp(values[i], value) == 0)
1721 result = True;
1722 }
1723
1724
1725 done:
1726 if (values != NULL)
1727 ldap_value_free(values);
1728 if (msg != NULL)
1729 ldap_msgfree(msg);
1730
1731 return result;
1732
1733 }
1734
1735 /*******************************************************************
1736 Check if LDAP-Server supports a certain Control (OID in string format)
1737 ********************************************************************/
1738
1739 BOOL smbldap_has_control(LDAP *ld, const char *control)
1740 {
1741 const char *attrs[] = { "supportedControl", NULL };
1742 return smbldap_check_root_dse(ld, attrs, control);
1743 }
1744
1745 /*******************************************************************
1746 Check if LDAP-Server supports a certain Extension (OID in string format)
1747 ********************************************************************/
1748
1749 BOOL smbldap_has_extension(LDAP *ld, const char *extension)
1750 {
1751 const char *attrs[] = { "supportedExtension", NULL };
1752 return smbldap_check_root_dse(ld, attrs, extension);
1753 }
1754
1755 /*******************************************************************
1756 Check if LDAP-Server holds a given namingContext
1757 ********************************************************************/
1758
1759 BOOL smbldap_has_naming_context(LDAP *ld, const char *naming_context)
1760 {
1761 const char *attrs[] = { "namingContexts", NULL };
1762 return smbldap_check_root_dse(ld, attrs, naming_context);
1763 }
1764
1765 BOOL smbldap_set_creds(struct smbldap_state *ldap_state, BOOL anon, const char *dn, const char *secret)
1766 {
1767 ldap_state->anonymous = anon;
1768
1769 /* free any previously set credential */
1770
1771 SAFE_FREE(ldap_state->bind_dn);
1772 if (ldap_state->bind_secret) {
1773 /* make sure secrets are zeroed out of memory */
1774 memset(ldap_state->bind_secret, '\0', strlen(ldap_state->bind_secret));
1775 SAFE_FREE(ldap_state->bind_secret);
1776 }
1777
1778 if ( ! anon) {
1779 ldap_state->bind_dn = SMB_STRDUP(dn);
1780 ldap_state->bind_secret = SMB_STRDUP(secret);
1781 }
1782
1783 return True;
1784 }
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