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r25068: Older samba3 DCs will return DCERPC_FAULT_OP_RNG_ERROR for every opcode on the
[Samba.git] / source / lib / smbldap.c
blob1cfb5f89a7054e75192331fbedeb87463108765a
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!");
413 /* notreached. */
414 }
415 mods[0] = NULL;
416 }
417
418 for (i = 0; mods[i] != NULL; ++i) {
419 if (mods[i]->mod_op == modop && strequal(mods[i]->mod_type, attribute))
420 break;
421 }
422
423 if (mods[i] == NULL) {
424 mods = SMB_REALLOC_ARRAY (mods, LDAPMod *, i + 2);
425 if (mods == NULL) {
426 smb_panic("smbldap_set_mod: out of memory!");
427 /* notreached. */
428 }
429 mods[i] = SMB_MALLOC_P(LDAPMod);
430 if (mods[i] == NULL) {
431 smb_panic("smbldap_set_mod: out of memory!");
432 /* notreached. */
433 }
434 mods[i]->mod_op = modop;
435 mods[i]->mod_values = NULL;
436 mods[i]->mod_type = SMB_STRDUP(attribute);
437 mods[i + 1] = NULL;
438 }
439
440 if (value != NULL) {
441 char *utf8_value = NULL;
442
443 j = 0;
444 if (mods[i]->mod_values != NULL) {
445 for (; mods[i]->mod_values[j] != NULL; j++);
446 }
447 mods[i]->mod_values = SMB_REALLOC_ARRAY(mods[i]->mod_values, char *, j + 2);
448
449 if (mods[i]->mod_values == NULL) {
450 smb_panic("smbldap_set_mod: out of memory!");
451 /* notreached. */
452 }
453
454 if (push_utf8_allocate(&utf8_value, value) == (size_t)-1) {
455 smb_panic("smbldap_set_mod: String conversion failure!");
456 /* notreached. */
457 }
458
459 mods[i]->mod_values[j] = utf8_value;
460
461 mods[i]->mod_values[j + 1] = NULL;
462 }
463 *modlist = mods;
464 }
465
466 /**********************************************************************
467 Set attribute to newval in LDAP, regardless of what value the
468 attribute had in LDAP before.
469 *********************************************************************/
470
471 void smbldap_make_mod(LDAP *ldap_struct, LDAPMessage *existing,
472 LDAPMod ***mods,
473 const char *attribute, const char *newval)
474 {
475 char oldval[2048]; /* current largest allowed value is mungeddial */
476 BOOL existed;
477
478 if (attribute == NULL) {
479 /* This can actually happen for ldapsam_compat where we for
480 * example don't have a password history */
481 return;
482 }
483
484 if (existing != NULL) {
485 existed = smbldap_get_single_attribute(ldap_struct, existing, attribute, oldval, sizeof(oldval));
486 } else {
487 existed = False;
488 *oldval = '\0';
489 }
490
491 /* all of our string attributes are case insensitive */
492
493 if (existed && newval && (StrCaseCmp(oldval, newval) == 0)) {
494
495 /* Believe it or not, but LDAP will deny a delete and
496 an add at the same time if the values are the
497 same... */
498 DEBUG(10,("smbldap_make_mod: attribute |%s| not changed.\n", attribute));
499 return;
500 }
501
502 if (existed) {
503 /* There has been no value before, so don't delete it.
504 * Here's a possible race: We might end up with
505 * duplicate attributes */
506 /* By deleting exactly the value we found in the entry this
507 * should be race-free in the sense that the LDAP-Server will
508 * deny the complete operation if somebody changed the
509 * attribute behind our back. */
510 /* This will also allow modifying single valued attributes
511 * in Novell NDS. In NDS you have to first remove attribute and then
512 * you could add new value */
513
514 DEBUG(10,("smbldap_make_mod: deleting attribute |%s| values |%s|\n", attribute, oldval));
515 smbldap_set_mod(mods, LDAP_MOD_DELETE, attribute, oldval);
516 }
517
518 /* Regardless of the real operation (add or modify)
519 we add the new value here. We rely on deleting
520 the old value, should it exist. */
521
522 if ((newval != NULL) && (strlen(newval) > 0)) {
523 DEBUG(10,("smbldap_make_mod: adding attribute |%s| value |%s|\n", attribute, newval));
524 smbldap_set_mod(mods, LDAP_MOD_ADD, attribute, newval);
525 }
526 }
527
528 /**********************************************************************
529 Some varients of the LDAP rebind code do not pass in the third 'arg'
530 pointer to a void*, so we try and work around it by assuming that the
531 value of the 'LDAP *' pointer is the same as the one we had passed in
532 **********************************************************************/
533
534 struct smbldap_state_lookup {
535 LDAP *ld;
536 struct smbldap_state *smbldap_state;
537 struct smbldap_state_lookup *prev, *next;
538 };
539
540 static struct smbldap_state_lookup *smbldap_state_lookup_list;
541
542 static struct smbldap_state *smbldap_find_state(LDAP *ld)
543 {
544 struct smbldap_state_lookup *t;
545
546 for (t = smbldap_state_lookup_list; t; t = t->next) {
547 if (t->ld == ld) {
548 return t->smbldap_state;
549 }
550 }
551 return NULL;
552 }
553
554 static void smbldap_delete_state(struct smbldap_state *smbldap_state)
555 {
556 struct smbldap_state_lookup *t;
557
558 for (t = smbldap_state_lookup_list; t; t = t->next) {
559 if (t->smbldap_state == smbldap_state) {
560 DLIST_REMOVE(smbldap_state_lookup_list, t);
561 SAFE_FREE(t);
562 return;
563 }
564 }
565 }
566
567 static void smbldap_store_state(LDAP *ld, struct smbldap_state *smbldap_state)
568 {
569 struct smbldap_state *tmp_ldap_state;
570 struct smbldap_state_lookup *t;
571
572 if ((tmp_ldap_state = smbldap_find_state(ld))) {
573 SMB_ASSERT(tmp_ldap_state == smbldap_state);
574 return;
575 }
576
577 t = SMB_XMALLOC_P(struct smbldap_state_lookup);
578 ZERO_STRUCTP(t);
579
580 DLIST_ADD_END(smbldap_state_lookup_list, t, struct smbldap_state_lookup *);
581 t->ld = ld;
582 t->smbldap_state = smbldap_state;
583 }
584
585 /********************************************************************
586 start TLS on an existing LDAP connection
587 *******************************************************************/
588
589 int smb_ldap_start_tls(LDAP *ldap_struct, int version)
590 {
591 int rc;
592
593 if (lp_ldap_ssl() != LDAP_SSL_START_TLS) {
594 return LDAP_SUCCESS;
595 }
596
597 #ifdef LDAP_OPT_X_TLS
598 if (version != LDAP_VERSION3) {
599 DEBUG(0, ("Need LDAPv3 for Start TLS\n"));
600 return LDAP_OPERATIONS_ERROR;
601 }
602
603 if ((rc = ldap_start_tls_s (ldap_struct, NULL, NULL)) != LDAP_SUCCESS) {
604 DEBUG(0,("Failed to issue the StartTLS instruction: %s\n",
605 ldap_err2string(rc)));
606 return rc;
607 }
608
609 DEBUG (3, ("StartTLS issued: using a TLS connection\n"));
610 return LDAP_SUCCESS;
611 #else
612 DEBUG(0,("StartTLS not supported by LDAP client libraries!\n"));
613 return LDAP_OPERATIONS_ERROR;
614 #endif
615 }
616
617 /********************************************************************
618 setup a connection to the LDAP server based on a uri
619 *******************************************************************/
620
621 int smb_ldap_setup_conn(LDAP **ldap_struct, const char *uri)
622 {
623 int rc;
624
625 DEBUG(10, ("smb_ldap_setup_connection: %s\n", uri));
626
627 #ifdef HAVE_LDAP_INITIALIZE
628
629 rc = ldap_initialize(ldap_struct, uri);
630 if (rc) {
631 DEBUG(0, ("ldap_initialize: %s\n", ldap_err2string(rc)));
632 }
633
634 return rc;
635 #else
636
637 /* Parse the string manually */
638
639 {
640 int port = 0;
641 fstring protocol;
642 fstring host;
643 SMB_ASSERT(sizeof(protocol)>10 && sizeof(host)>254);
644
645
646 /* skip leading "URL:" (if any) */
647 if ( strnequal( uri, "URL:", 4 ) ) {
648 uri += 4;
649 }
650
651 sscanf(uri, "%10[^:]://%254[^:/]:%d", protocol, host, &port);
652
653 if (port == 0) {
654 if (strequal(protocol, "ldap")) {
655 port = LDAP_PORT;
656 } else if (strequal(protocol, "ldaps")) {
657 port = LDAPS_PORT;
658 } else {
659 DEBUG(0, ("unrecognised protocol (%s)!\n", protocol));
660 }
661 }
662
663 if ((*ldap_struct = ldap_init(host, port)) == NULL) {
664 DEBUG(0, ("ldap_init failed !\n"));
665 return LDAP_OPERATIONS_ERROR;
666 }
667
668 if (strequal(protocol, "ldaps")) {
669 #ifdef LDAP_OPT_X_TLS
670 int tls = LDAP_OPT_X_TLS_HARD;
671 if (ldap_set_option (*ldap_struct, LDAP_OPT_X_TLS, &tls) != LDAP_SUCCESS)
672 {
673 DEBUG(0, ("Failed to setup a TLS session\n"));
674 }
675
676 DEBUG(3,("LDAPS option set...!\n"));
677 #else
678 DEBUG(0,("smbldap_open_connection: Secure connection not supported by LDAP client libraries!\n"));
679 return LDAP_OPERATIONS_ERROR;
680 #endif /* LDAP_OPT_X_TLS */
681 }
682
683 }
684 #endif /* HAVE_LDAP_INITIALIZE */
685 return LDAP_SUCCESS;
686 }
687
688 /********************************************************************
689 try to upgrade to Version 3 LDAP if not already, in either case return current
690 version
691 *******************************************************************/
692
693 int smb_ldap_upgrade_conn(LDAP *ldap_struct, int *new_version)
694 {
695 int version;
696 int rc;
697
698 /* assume the worst */
699 *new_version = LDAP_VERSION2;
700
701 rc = ldap_get_option(ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
702 if (rc) {
703 return rc;
704 }
705
706 if (version == LDAP_VERSION3) {
707 *new_version = LDAP_VERSION3;
708 return LDAP_SUCCESS;
709 }
710
711 /* try upgrade */
712 version = LDAP_VERSION3;
713 rc = ldap_set_option (ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
714 if (rc) {
715 return rc;
716 }
717
718 *new_version = LDAP_VERSION3;
719 return LDAP_SUCCESS;
720 }
721
722 /*******************************************************************
723 open a connection to the ldap server (just until the bind)
724 ******************************************************************/
725
726 int smb_ldap_setup_full_conn(LDAP **ldap_struct, const char *uri)
727 {
728 int rc, version;
729
730 rc = smb_ldap_setup_conn(ldap_struct, uri);
731 if (rc) {
732 return rc;
733 }
734
735 rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
736 if (rc) {
737 return rc;
738 }
739
740 rc = smb_ldap_start_tls(*ldap_struct, version);
741 if (rc) {
742 return rc;
743 }
744
745 return LDAP_SUCCESS;
746 }
747
748 /*******************************************************************
749 open a connection to the ldap server.
750 ******************************************************************/
751 static int smbldap_open_connection (struct smbldap_state *ldap_state)
752
753 {
754 int rc = LDAP_SUCCESS;
755 int version;
756 LDAP **ldap_struct = &ldap_state->ldap_struct;
757
758 rc = smb_ldap_setup_conn(ldap_struct, ldap_state->uri);
759 if (rc) {
760 return rc;
761 }
762
763 /* Store the LDAP pointer in a lookup list */
764
765 smbldap_store_state(*ldap_struct, ldap_state);
766
767 /* Upgrade to LDAPv3 if possible */
768
769 rc = smb_ldap_upgrade_conn(*ldap_struct, &version);
770 if (rc) {
771 return rc;
772 }
773
774 /* Start TLS if required */
775
776 rc = smb_ldap_start_tls(*ldap_struct, version);
777 if (rc) {
778 return rc;
779 }
780
781 DEBUG(2, ("smbldap_open_connection: connection opened\n"));
782 return rc;
783 }
784
785 /*******************************************************************
786 a rebind function for authenticated referrals
787 This version takes a void* that we can shove useful stuff in :-)
788 ******************************************************************/
789 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
790 #else
791 static int rebindproc_with_state (LDAP * ld, char **whop, char **credp,
792 int *methodp, int freeit, void *arg)
793 {
794 struct smbldap_state *ldap_state = arg;
795
796 /** @TODO Should we be doing something to check what servers we rebind to?
797 Could we get a referral to a machine that we don't want to give our
798 username and password to? */
799
800 if (freeit) {
801 SAFE_FREE(*whop);
802 if (*credp) {
803 memset(*credp, '\0', strlen(*credp));
804 }
805 SAFE_FREE(*credp);
806 } else {
807 DEBUG(5,("rebind_proc_with_state: Rebinding as \"%s\"\n",
808 ldap_state->bind_dn?ldap_state->bind_dn:"[Anonymous bind]"));
809
810 if (ldap_state->anonymous) {
811 *whop = NULL;
812 *credp = NULL;
813 } else {
814 *whop = SMB_STRDUP(ldap_state->bind_dn);
815 if (!*whop) {
816 return LDAP_NO_MEMORY;
817 }
818 *credp = SMB_STRDUP(ldap_state->bind_secret);
819 if (!*credp) {
820 SAFE_FREE(*whop);
821 return LDAP_NO_MEMORY;
822 }
823 }
824 *methodp = LDAP_AUTH_SIMPLE;
825 }
826
827 GetTimeOfDay(&ldap_state->last_rebind);
828
829 return 0;
830 }
831 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
832
833 /*******************************************************************
834 a rebind function for authenticated referrals
835 This version takes a void* that we can shove useful stuff in :-)
836 and actually does the connection.
837 ******************************************************************/
838 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
839 static int rebindproc_connect_with_state (LDAP *ldap_struct,
840 LDAP_CONST char *url,
841 ber_tag_t request,
842 ber_int_t msgid, void *arg)
843 {
844 struct smbldap_state *ldap_state =
845 (struct smbldap_state *)arg;
846 int rc;
847 int version;
848
849 DEBUG(5,("rebindproc_connect_with_state: Rebinding to %s as \"%s\"\n",
850 url, ldap_state->bind_dn?ldap_state->bind_dn:"[Anonymous bind]"));
851
852 /* call START_TLS again (ldaps:// is handled by the OpenLDAP library
853 * itself) before rebinding to another LDAP server to avoid to expose
854 * our credentials. At least *try* to secure the connection - Guenther */
855
856 smb_ldap_upgrade_conn(ldap_struct, &version);
857 smb_ldap_start_tls(ldap_struct, version);
858
859 /** @TODO Should we be doing something to check what servers we rebind to?
860 Could we get a referral to a machine that we don't want to give our
861 username and password to? */
862
863 rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
864
865 /* only set the last rebind timestamp when we did rebind after a
866 * non-read LDAP operation. That way we avoid the replication sleep
867 * after a simple redirected search operation - Guenther */
868
869 switch (request) {
870
871 case LDAP_REQ_MODIFY:
872 case LDAP_REQ_ADD:
873 case LDAP_REQ_DELETE:
874 case LDAP_REQ_MODDN:
875 case LDAP_REQ_EXTENDED:
876 DEBUG(10,("rebindproc_connect_with_state: "
877 "setting last_rebind timestamp "
878 "(req: 0x%02x)\n", (unsigned int)request));
879 GetTimeOfDay(&ldap_state->last_rebind);
880 break;
881 default:
882 ZERO_STRUCT(ldap_state->last_rebind);
883 break;
884 }
885
886 return rc;
887 }
888 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
889
890 /*******************************************************************
891 Add a rebind function for authenticated referrals
892 ******************************************************************/
893 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
894 #else
895 # if LDAP_SET_REBIND_PROC_ARGS == 2
896 static int rebindproc (LDAP *ldap_struct, char **whop, char **credp,
897 int *method, int freeit )
898 {
899 struct smbldap_state *ldap_state = smbldap_find_state(ldap_struct);
900
901 return rebindproc_with_state(ldap_struct, whop, credp,
902 method, freeit, ldap_state);
903
904 }
905 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
906 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
907
908 /*******************************************************************
909 a rebind function for authenticated referrals
910 this also does the connection, but no void*.
911 ******************************************************************/
912 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
913 # if LDAP_SET_REBIND_PROC_ARGS == 2
914 static int rebindproc_connect (LDAP * ld, LDAP_CONST char *url, int request,
915 ber_int_t msgid)
916 {
917 struct smbldap_state *ldap_state = smbldap_find_state(ld);
918
919 return rebindproc_connect_with_state(ld, url, (ber_tag_t)request, msgid,
920 ldap_state);
921 }
922 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
923 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
924
925 /*******************************************************************
926 connect to the ldap server under system privilege.
927 ******************************************************************/
928 static int smbldap_connect_system(struct smbldap_state *ldap_state, LDAP * ldap_struct)
929 {
930 int rc;
931 int version;
932
933 if (!ldap_state->anonymous && !ldap_state->bind_dn) {
934
935 /* get the default dn and password only if they are not set already */
936 if (!fetch_ldap_pw(&ldap_state->bind_dn, &ldap_state->bind_secret)) {
937 DEBUG(0, ("ldap_connect_system: Failed to retrieve password from secrets.tdb\n"));
938 return LDAP_INVALID_CREDENTIALS;
939 }
940 }
941
942 /* removed the sasl_bind_s "EXTERNAL" stuff, as my testsuite
943 (OpenLDAP) doesnt' seem to support it */
944
945 DEBUG(10,("ldap_connect_system: Binding to ldap server %s as \"%s\"\n",
946 ldap_state->uri, ldap_state->bind_dn));
947
948 #ifdef HAVE_LDAP_SET_REBIND_PROC
949 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
950 # if LDAP_SET_REBIND_PROC_ARGS == 2
951 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect);
952 # endif
953 # if LDAP_SET_REBIND_PROC_ARGS == 3
954 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect_with_state, (void *)ldap_state);
955 # endif
956 #else /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
957 # if LDAP_SET_REBIND_PROC_ARGS == 2
958 ldap_set_rebind_proc(ldap_struct, &rebindproc);
959 # endif
960 # if LDAP_SET_REBIND_PROC_ARGS == 3
961 ldap_set_rebind_proc(ldap_struct, &rebindproc_with_state, (void *)ldap_state);
962 # endif
963 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
964 #endif
965
966 rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
967
968 if (rc != LDAP_SUCCESS) {
969 char *ld_error = NULL;
970 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
971 &ld_error);
972 DEBUG(ldap_state->num_failures ? 2 : 0,
973 ("failed to bind to server %s with dn=\"%s\" Error: %s\n\t%s\n",
974 ldap_state->uri,
975 ldap_state->bind_dn ? ldap_state->bind_dn : "[Anonymous bind]",
976 ldap_err2string(rc),
977 ld_error ? ld_error : "(unknown)"));
978 SAFE_FREE(ld_error);
979 ldap_state->num_failures++;
980 return rc;
981 }
982
983 ldap_state->num_failures = 0;
984 ldap_state->paged_results = False;
985
986 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
987
988 if (smbldap_has_control(ldap_state->ldap_struct, ADS_PAGE_CTL_OID) && version == 3) {
989 ldap_state->paged_results = True;
990 }
991
992 DEBUG(3, ("ldap_connect_system: succesful connection to the LDAP server\n"));
993 DEBUGADD(10, ("ldap_connect_system: LDAP server %s support paged results\n",
994 ldap_state->paged_results ? "does" : "does not"));
995 return rc;
996 }
997
998 static void smbldap_idle_fn(struct event_context *event_ctx,
999 struct timed_event *te,
1000 const struct timeval *now,
1001 void *private_data);
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
1066 TALLOC_FREE(ldap_state->idle_event);
1067
1068 if (ldap_state->event_context != NULL) {
1069 ldap_state->idle_event = event_add_timed(
1070 ldap_state->event_context, NULL,
1071 timeval_current_ofs(SMBLDAP_IDLE_TIME, 0),
1072 "smbldap_idle_fn", smbldap_idle_fn, ldap_state);
1073 }
1074
1075 DEBUG(4,("The LDAP server is succesfully connected\n"));
1076
1077 return LDAP_SUCCESS;
1078 }
1079
1080 /**********************************************************************
1081 Disconnect from LDAP server
1082 *********************************************************************/
1083 static NTSTATUS smbldap_close(struct smbldap_state *ldap_state)
1084 {
1085 if (!ldap_state)
1086 return NT_STATUS_INVALID_PARAMETER;
1087
1088 if (ldap_state->ldap_struct != NULL) {
1089 ldap_unbind(ldap_state->ldap_struct);
1090 ldap_state->ldap_struct = NULL;
1091 }
1092
1093 smbldap_delete_state(ldap_state);
1094
1095 DEBUG(5,("The connection to the LDAP server was closed\n"));
1096 /* maybe free the results here --metze */
1097
1098 return NT_STATUS_OK;
1099 }
1100
1101 static BOOL got_alarm;
1102
1103 static void (*old_handler)(int);
1104
1105 static void gotalarm_sig(int dummy)
1106 {
1107 got_alarm = True;
1108 }
1109
1110 static int another_ldap_try(struct smbldap_state *ldap_state, int *rc,
1111 int *attempts, time_t endtime)
1112 {
1113 time_t now = time(NULL);
1114 int open_rc = LDAP_SERVER_DOWN;
1115
1116 if (*rc != LDAP_SERVER_DOWN)
1117 goto no_next;
1118
1119 if (now >= endtime) {
1120 smbldap_close(ldap_state);
1121 *rc = LDAP_TIMEOUT;
1122 goto no_next;
1123 }
1124
1125 if (*attempts == 0) {
1126 got_alarm = False;
1127 old_handler = CatchSignal(SIGALRM, gotalarm_sig);
1128 alarm(endtime - now);
1129
1130 if (ldap_state->pid != sys_getpid())
1131 smbldap_close(ldap_state);
1132 }
1133
1134 while (1) {
1135
1136 if (*attempts != 0)
1137 smb_msleep(1000);
1138
1139 *attempts += 1;
1140
1141 open_rc = smbldap_open(ldap_state);
1142
1143 if (open_rc == LDAP_SUCCESS) {
1144 ldap_state->last_use = now;
1145 return True;
1146 }
1147
1148 if (open_rc == LDAP_INSUFFICIENT_ACCESS) {
1149 /* The fact that we are non-root or any other
1150 * access-denied condition will not change in the next
1151 * round of trying */
1152 *rc = open_rc;
1153 break;
1154 }
1155
1156 if (got_alarm) {
1157 *rc = LDAP_TIMEOUT;
1158 break;
1159 }
1160
1161 if (open_rc != LDAP_SUCCESS) {
1162 DEBUG(1, ("Connection to LDAP server failed for the "
1163 "%d try!\n", *attempts));
1164 }
1165 }
1166
1167 no_next:
1168 CatchSignal(SIGALRM, old_handler);
1169 alarm(0);
1170 ldap_state->last_use = now;
1171 return False;
1172 }
1173
1174 /*********************************************************************
1175 ********************************************************************/
1176
1177 static int smbldap_search_ext(struct smbldap_state *ldap_state,
1178 const char *base, int scope, const char *filter,
1179 const char *attrs[], int attrsonly,
1180 LDAPControl **sctrls, LDAPControl **cctrls,
1181 int sizelimit, LDAPMessage **res)
1182 {
1183 int rc = LDAP_SERVER_DOWN;
1184 int attempts = 0;
1185 char *utf8_filter;
1186 time_t endtime = time(NULL)+lp_ldap_timeout();
1187 struct timeval timeout;
1188
1189 SMB_ASSERT(ldap_state);
1190
1191 DEBUG(5,("smbldap_search_ext: base => [%s], filter => [%s], "
1192 "scope => [%d]\n", base, filter, scope));
1193
1194 if (ldap_state->last_rebind.tv_sec > 0) {
1195 struct timeval tval;
1196 SMB_BIG_INT tdiff = 0;
1197 int sleep_time = 0;
1198
1199 ZERO_STRUCT(tval);
1200 GetTimeOfDay(&tval);
1201
1202 tdiff = usec_time_diff(&tval, &ldap_state->last_rebind);
1203 tdiff /= 1000; /* Convert to milliseconds. */
1204
1205 sleep_time = lp_ldap_replication_sleep()-(int)tdiff;
1206 sleep_time = MIN(sleep_time, MAX_LDAP_REPLICATION_SLEEP_TIME);
1207
1208 if (sleep_time > 0) {
1209 /* we wait for the LDAP replication */
1210 DEBUG(5,("smbldap_search_ext: waiting %d milliseconds "
1211 "for LDAP replication.\n",sleep_time));
1212 smb_msleep(sleep_time);
1213 DEBUG(5,("smbldap_search_ext: go on!\n"));
1214 }
1215 ZERO_STRUCT(ldap_state->last_rebind);
1216 }
1217
1218 if (push_utf8_allocate(&utf8_filter, filter) == (size_t)-1) {
1219 return LDAP_NO_MEMORY;
1220 }
1221
1222 /* Setup timeout for the ldap_search_ext_s call - local and remote. */
1223 timeout.tv_sec = lp_ldap_timeout();
1224 timeout.tv_usec = 0;
1225
1226 /* Setup alarm timeout.... Do we need both of these ? JRA.
1227 * Yes, I think we do need both of these. The server timeout only
1228 * covers the case where the server's operation takes too long. It
1229 * does not cover the case where the request hangs on its way to the
1230 * server. The server side timeout is not strictly necessary, it's
1231 * just a bit more kind to the server. VL. */
1232
1233 got_alarm = 0;
1234 CatchSignal(SIGALRM, SIGNAL_CAST gotalarm_sig);
1235 alarm(lp_ldap_timeout());
1236 /* End setup timeout. */
1237
1238 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1239 rc = ldap_search_ext_s(ldap_state->ldap_struct, base, scope,
1240 utf8_filter,
1241 CONST_DISCARD(char **, attrs),
1242 attrsonly, sctrls, cctrls, &timeout,
1243 sizelimit, res);
1244 if (rc != LDAP_SUCCESS) {
1245 char *ld_error = NULL;
1246 int ld_errno;
1247
1248 ldap_get_option(ldap_state->ldap_struct,
1249 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1250
1251 ldap_get_option(ldap_state->ldap_struct,
1252 LDAP_OPT_ERROR_STRING, &ld_error);
1253 DEBUG(10, ("Failed search for base: %s, error: %d (%s) "
1254 "(%s)\n", base, ld_errno,
1255 ldap_err2string(rc),
1256 ld_error ? ld_error : "unknown"));
1257 SAFE_FREE(ld_error);
1258
1259 if (ld_errno == LDAP_SERVER_DOWN) {
1260 ldap_unbind(ldap_state->ldap_struct);
1261 ldap_state->ldap_struct = NULL;
1262 }
1263 }
1264 }
1265
1266 SAFE_FREE(utf8_filter);
1267
1268 /* Teardown timeout. */
1269 CatchSignal(SIGALRM, SIGNAL_CAST SIG_IGN);
1270 alarm(0);
1271
1272 if (got_alarm != 0)
1273 return LDAP_TIMELIMIT_EXCEEDED;
1274
1275 return rc;
1276 }
1277
1278 int smbldap_search(struct smbldap_state *ldap_state,
1279 const char *base, int scope, const char *filter,
1280 const char *attrs[], int attrsonly,
1281 LDAPMessage **res)
1282 {
1283 return smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1284 attrsonly, NULL, NULL, LDAP_NO_LIMIT, res);
1285 }
1286
1287 int smbldap_search_paged(struct smbldap_state *ldap_state,
1288 const char *base, int scope, const char *filter,
1289 const char **attrs, int attrsonly, int pagesize,
1290 LDAPMessage **res, void **cookie)
1291 {
1292 LDAPControl pr;
1293 LDAPControl **rcontrols;
1294 LDAPControl *controls[2] = { NULL, NULL};
1295 BerElement *cookie_be = NULL;
1296 struct berval *cookie_bv = NULL;
1297 int tmp = 0, i, rc;
1298 BOOL critical = True;
1299
1300 *res = NULL;
1301
1302 DEBUG(3,("smbldap_search_paged: base => [%s], filter => [%s],"
1303 "scope => [%d], pagesize => [%d]\n",
1304 base, filter, scope, pagesize));
1305
1306 cookie_be = ber_alloc_t(LBER_USE_DER);
1307 if (cookie_be == NULL) {
1308 DEBUG(0,("smbldap_create_page_control: ber_alloc_t returns "
1309 "NULL\n"));
1310 return LDAP_NO_MEMORY;
1311 }
1312
1313 /* construct cookie */
1314 if (*cookie != NULL) {
1315 ber_printf(cookie_be, "{iO}", (ber_int_t) pagesize, *cookie);
1316 ber_bvfree((struct berval *)*cookie); /* don't need it from last time */
1317 *cookie = NULL;
1318 } else {
1319 ber_printf(cookie_be, "{io}", (ber_int_t) pagesize, "", 0);
1320 }
1321 ber_flatten(cookie_be, &cookie_bv);
1322
1323 pr.ldctl_oid = CONST_DISCARD(char *, ADS_PAGE_CTL_OID);
1324 pr.ldctl_iscritical = (char) critical;
1325 pr.ldctl_value.bv_len = cookie_bv->bv_len;
1326 pr.ldctl_value.bv_val = cookie_bv->bv_val;
1327
1328 controls[0] = &pr;
1329 controls[1] = NULL;
1330
1331 rc = smbldap_search_ext(ldap_state, base, scope, filter, attrs,
1332 0, controls, NULL, LDAP_NO_LIMIT, res);
1333
1334 ber_free(cookie_be, 1);
1335 ber_bvfree(cookie_bv);
1336
1337 if (rc != 0) {
1338 DEBUG(3,("smbldap_search_paged: smbldap_search_ext(%s) "
1339 "failed with [%s]\n", filter, ldap_err2string(rc)));
1340 goto done;
1341 }
1342
1343 DEBUG(3,("smbldap_search_paged: search was successfull\n"));
1344
1345 rc = ldap_parse_result(ldap_state->ldap_struct, *res, NULL, NULL,
1346 NULL, NULL, &rcontrols, 0);
1347 if (rc != 0) {
1348 DEBUG(3,("smbldap_search_paged: ldap_parse_result failed " \
1349 "with [%s]\n", ldap_err2string(rc)));
1350 goto done;
1351 }
1352
1353 if (rcontrols == NULL)
1354 goto done;
1355
1356 for (i=0; rcontrols[i]; i++) {
1357
1358 if (strcmp(ADS_PAGE_CTL_OID, rcontrols[i]->ldctl_oid) != 0)
1359 continue;
1360
1361 cookie_be = ber_init(&rcontrols[i]->ldctl_value);
1362 ber_scanf(cookie_be,"{iO}", &tmp, &cookie_bv);
1363 /* the berval is the cookie, but must be freed when it is all
1364 done */
1365 if (cookie_bv->bv_len)
1366 *cookie=ber_bvdup(cookie_bv);
1367 else
1368 *cookie=NULL;
1369 ber_bvfree(cookie_bv);
1370 ber_free(cookie_be, 1);
1371 break;
1372 }
1373 ldap_controls_free(rcontrols);
1374 done:
1375 return rc;
1376 }
1377
1378 int smbldap_modify(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1379 {
1380 int rc = LDAP_SERVER_DOWN;
1381 int attempts = 0;
1382 char *utf8_dn;
1383 time_t endtime = time(NULL)+lp_ldap_timeout();
1384
1385 SMB_ASSERT(ldap_state);
1386
1387 DEBUG(5,("smbldap_modify: dn => [%s]\n", dn ));
1388
1389 if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1390 return LDAP_NO_MEMORY;
1391 }
1392
1393 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1394 rc = ldap_modify_s(ldap_state->ldap_struct, utf8_dn, attrs);
1395 if (rc != LDAP_SUCCESS) {
1396 char *ld_error = NULL;
1397 int ld_errno;
1398
1399 ldap_get_option(ldap_state->ldap_struct,
1400 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1401
1402 ldap_get_option(ldap_state->ldap_struct,
1403 LDAP_OPT_ERROR_STRING, &ld_error);
1404 DEBUG(10, ("Failed to modify dn: %s, error: %d (%s) "
1405 "(%s)\n", dn, ld_errno,
1406 ldap_err2string(rc),
1407 ld_error ? ld_error : "unknown"));
1408 SAFE_FREE(ld_error);
1409
1410 if (ld_errno == LDAP_SERVER_DOWN) {
1411 ldap_unbind(ldap_state->ldap_struct);
1412 ldap_state->ldap_struct = NULL;
1413 }
1414 }
1415 }
1416
1417 SAFE_FREE(utf8_dn);
1418 return rc;
1419 }
1420
1421 int smbldap_add(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1422 {
1423 int rc = LDAP_SERVER_DOWN;
1424 int attempts = 0;
1425 char *utf8_dn;
1426 time_t endtime = time(NULL)+lp_ldap_timeout();
1427
1428 SMB_ASSERT(ldap_state);
1429
1430 DEBUG(5,("smbldap_add: dn => [%s]\n", dn ));
1431
1432 if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1433 return LDAP_NO_MEMORY;
1434 }
1435
1436 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1437 rc = ldap_add_s(ldap_state->ldap_struct, utf8_dn, attrs);
1438 if (rc != LDAP_SUCCESS) {
1439 char *ld_error = NULL;
1440 int ld_errno;
1441
1442 ldap_get_option(ldap_state->ldap_struct,
1443 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1444
1445 ldap_get_option(ldap_state->ldap_struct,
1446 LDAP_OPT_ERROR_STRING, &ld_error);
1447 DEBUG(10, ("Failed to add dn: %s, error: %d (%s) "
1448 "(%s)\n", dn, ld_errno,
1449 ldap_err2string(rc),
1450 ld_error ? ld_error : "unknown"));
1451 SAFE_FREE(ld_error);
1452
1453 if (ld_errno == LDAP_SERVER_DOWN) {
1454 ldap_unbind(ldap_state->ldap_struct);
1455 ldap_state->ldap_struct = NULL;
1456 }
1457 }
1458 }
1459
1460 SAFE_FREE(utf8_dn);
1461 return rc;
1462 }
1463
1464 int smbldap_delete(struct smbldap_state *ldap_state, const char *dn)
1465 {
1466 int rc = LDAP_SERVER_DOWN;
1467 int attempts = 0;
1468 char *utf8_dn;
1469 time_t endtime = time(NULL)+lp_ldap_timeout();
1470
1471 SMB_ASSERT(ldap_state);
1472
1473 DEBUG(5,("smbldap_delete: dn => [%s]\n", dn ));
1474
1475 if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1476 return LDAP_NO_MEMORY;
1477 }
1478
1479 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1480 rc = ldap_delete_s(ldap_state->ldap_struct, utf8_dn);
1481 if (rc != LDAP_SUCCESS) {
1482 char *ld_error = NULL;
1483 int ld_errno;
1484
1485 ldap_get_option(ldap_state->ldap_struct,
1486 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1487
1488 ldap_get_option(ldap_state->ldap_struct,
1489 LDAP_OPT_ERROR_STRING, &ld_error);
1490 DEBUG(10, ("Failed to delete dn: %s, error: %d (%s) "
1491 "(%s)\n", dn, ld_errno,
1492 ldap_err2string(rc),
1493 ld_error ? ld_error : "unknown"));
1494 SAFE_FREE(ld_error);
1495
1496 if (ld_errno == LDAP_SERVER_DOWN) {
1497 ldap_unbind(ldap_state->ldap_struct);
1498 ldap_state->ldap_struct = NULL;
1499 }
1500 }
1501 }
1502
1503 SAFE_FREE(utf8_dn);
1504 return rc;
1505 }
1506
1507 int smbldap_extended_operation(struct smbldap_state *ldap_state,
1508 LDAP_CONST char *reqoid, struct berval *reqdata,
1509 LDAPControl **serverctrls, LDAPControl **clientctrls,
1510 char **retoidp, struct berval **retdatap)
1511 {
1512 int rc = LDAP_SERVER_DOWN;
1513 int attempts = 0;
1514 time_t endtime = time(NULL)+lp_ldap_timeout();
1515
1516 if (!ldap_state)
1517 return (-1);
1518
1519 while (another_ldap_try(ldap_state, &rc, &attempts, endtime)) {
1520 rc = ldap_extended_operation_s(ldap_state->ldap_struct, reqoid,
1521 reqdata, serverctrls,
1522 clientctrls, retoidp, retdatap);
1523 if (rc != LDAP_SUCCESS) {
1524 char *ld_error = NULL;
1525 int ld_errno;
1526
1527 ldap_get_option(ldap_state->ldap_struct,
1528 LDAP_OPT_ERROR_NUMBER, &ld_errno);
1529
1530 ldap_get_option(ldap_state->ldap_struct,
1531 LDAP_OPT_ERROR_STRING, &ld_error);
1532 DEBUG(10, ("Extended operation failed with error: "
1533 "%d (%s) (%s)\n", ld_errno,
1534 ldap_err2string(rc),
1535 ld_error ? ld_error : "unknown"));
1536 SAFE_FREE(ld_error);
1537
1538 if (ld_errno == LDAP_SERVER_DOWN) {
1539 ldap_unbind(ldap_state->ldap_struct);
1540 ldap_state->ldap_struct = NULL;
1541 }
1542 }
1543 }
1544
1545 return rc;
1546 }
1547
1548 /*******************************************************************
1549 run the search by name.
1550 ******************************************************************/
1551 int smbldap_search_suffix (struct smbldap_state *ldap_state,
1552 const char *filter, const char **search_attr,
1553 LDAPMessage ** result)
1554 {
1555 return smbldap_search(ldap_state, lp_ldap_suffix(), LDAP_SCOPE_SUBTREE,
1556 filter, search_attr, 0, result);
1557 }
1558
1559 static void smbldap_idle_fn(struct event_context *event_ctx,
1560 struct timed_event *te,
1561 const struct timeval *now,
1562 void *private_data)
1563 {
1564 struct smbldap_state *state = (struct smbldap_state *)private_data;
1565
1566 TALLOC_FREE(state->idle_event);
1567
1568 if (state->ldap_struct == NULL) {
1569 DEBUG(10,("ldap connection not connected...\n"));
1570 return;
1571 }
1572
1573 if ((state->last_use+SMBLDAP_IDLE_TIME) > now->tv_sec) {
1574 DEBUG(10,("ldap connection not idle...\n"));
1575
1576 state->idle_event = event_add_timed(
1577 event_ctx, NULL,
1578 timeval_add(now, SMBLDAP_IDLE_TIME, 0),
1579 "smbldap_idle_fn", smbldap_idle_fn,
1580 private_data);
1581 return;
1582 }
1583
1584 DEBUG(7,("ldap connection idle...closing connection\n"));
1585 smbldap_close(state);
1586 }
1587
1588 /**********************************************************************
1589 Housekeeping
1590 *********************************************************************/
1591
1592 void smbldap_free_struct(struct smbldap_state **ldap_state)
1593 {
1594 smbldap_close(*ldap_state);
1595
1596 if ((*ldap_state)->bind_secret) {
1597 memset((*ldap_state)->bind_secret, '\0', strlen((*ldap_state)->bind_secret));
1598 }
1599
1600 SAFE_FREE((*ldap_state)->bind_dn);
1601 SAFE_FREE((*ldap_state)->bind_secret);
1602
1603 TALLOC_FREE((*ldap_state)->idle_event);
1604
1605 *ldap_state = NULL;
1606
1607 /* No need to free any further, as it is talloc()ed */
1608 }
1609
1610
1611 /**********************************************************************
1612 Intitalise the 'general' ldap structures, on which ldap operations may be conducted
1613 *********************************************************************/
1614
1615 NTSTATUS smbldap_init(TALLOC_CTX *mem_ctx, struct event_context *event_ctx,
1616 const char *location,
1617 struct smbldap_state **smbldap_state)
1618 {
1619 *smbldap_state = TALLOC_ZERO_P(mem_ctx, struct smbldap_state);
1620 if (!*smbldap_state) {
1621 DEBUG(0, ("talloc() failed for ldapsam private_data!\n"));
1622 return NT_STATUS_NO_MEMORY;
1623 }
1624
1625 if (location) {
1626 (*smbldap_state)->uri = talloc_strdup(mem_ctx, location);
1627 } else {
1628 (*smbldap_state)->uri = "ldap://localhost";
1629 }
1630
1631 (*smbldap_state)->event_context = event_ctx;
1632
1633 return NT_STATUS_OK;
1634 }
1635
1636 /*******************************************************************
1637 Return a copy of the DN for a LDAPMessage. Convert from utf8 to CH_UNIX.
1638 ********************************************************************/
1639 char *smbldap_get_dn(LDAP *ld, LDAPMessage *entry)
1640 {
1641 char *utf8_dn, *unix_dn;
1642
1643 utf8_dn = ldap_get_dn(ld, entry);
1644 if (!utf8_dn) {
1645 DEBUG (5, ("smbldap_get_dn: ldap_get_dn failed\n"));
1646 return NULL;
1647 }
1648 if (pull_utf8_allocate(&unix_dn, utf8_dn) == (size_t)-1) {
1649 DEBUG (0, ("smbldap_get_dn: String conversion failure utf8 [%s]\n", utf8_dn));
1650 return NULL;
1651 }
1652 ldap_memfree(utf8_dn);
1653 return unix_dn;
1654 }
1655
1656 const char *smbldap_talloc_dn(TALLOC_CTX *mem_ctx, LDAP *ld,
1657 LDAPMessage *entry)
1658 {
1659 char *utf8_dn, *unix_dn;
1660
1661 utf8_dn = ldap_get_dn(ld, entry);
1662 if (!utf8_dn) {
1663 DEBUG (5, ("smbldap_get_dn: ldap_get_dn failed\n"));
1664 return NULL;
1665 }
1666 if (pull_utf8_talloc(mem_ctx, &unix_dn, utf8_dn) == (size_t)-1) {
1667 DEBUG (0, ("smbldap_get_dn: String conversion failure utf8 "
1668 "[%s]\n", utf8_dn));
1669 return NULL;
1670 }
1671 ldap_memfree(utf8_dn);
1672 return unix_dn;
1673 }
1674
1675 /*******************************************************************
1676 Check if root-dse has a certain Control or Extension
1677 ********************************************************************/
1678
1679 static BOOL smbldap_check_root_dse(LDAP *ld, const char **attrs, const char *value)
1680 {
1681 LDAPMessage *msg = NULL;
1682 LDAPMessage *entry = NULL;
1683 char **values = NULL;
1684 int rc, num_result, num_values, i;
1685 BOOL result = False;
1686
1687 if (!attrs[0]) {
1688 DEBUG(3,("smbldap_check_root_dse: nothing to look for\n"));
1689 return False;
1690 }
1691
1692 if (!strequal(attrs[0], "supportedExtension") &&
1693 !strequal(attrs[0], "supportedControl") &&
1694 !strequal(attrs[0], "namingContexts")) {
1695 DEBUG(3,("smbldap_check_root_dse: no idea what to query root-dse for: %s ?\n", attrs[0]));
1696 return False;
1697 }
1698
1699 rc = ldap_search_s(ld, "", LDAP_SCOPE_BASE,
1700 "(objectclass=*)", CONST_DISCARD(char **, attrs), 0 , &msg);
1701
1702 if (rc != LDAP_SUCCESS) {
1703 DEBUG(3,("smbldap_check_root_dse: Could not search rootDSE\n"));
1704 return False;
1705 }
1706
1707 num_result = ldap_count_entries(ld, msg);
1708
1709 if (num_result != 1) {
1710 DEBUG(3,("smbldap_check_root_dse: Expected one rootDSE, got %d\n", num_result));
1711 goto done;
1712 }
1713
1714 entry = ldap_first_entry(ld, msg);
1715
1716 if (entry == NULL) {
1717 DEBUG(3,("smbldap_check_root_dse: Could not retrieve rootDSE\n"));
1718 goto done;
1719 }
1720
1721 values = ldap_get_values(ld, entry, attrs[0]);
1722
1723 if (values == NULL) {
1724 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not support any %s\n", attrs[0]));
1725 goto done;
1726 }
1727
1728 num_values = ldap_count_values(values);
1729
1730 if (num_values == 0) {
1731 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not have any %s\n", attrs[0]));
1732 goto done;
1733 }
1734
1735 for (i=0; i<num_values; i++) {
1736 if (strcmp(values[i], value) == 0)
1737 result = True;
1738 }
1739
1740
1741 done:
1742 if (values != NULL)
1743 ldap_value_free(values);
1744 if (msg != NULL)
1745 ldap_msgfree(msg);
1746
1747 return result;
1748
1749 }
1750
1751 /*******************************************************************
1752 Check if LDAP-Server supports a certain Control (OID in string format)
1753 ********************************************************************/
1754
1755 BOOL smbldap_has_control(LDAP *ld, const char *control)
1756 {
1757 const char *attrs[] = { "supportedControl", NULL };
1758 return smbldap_check_root_dse(ld, attrs, control);
1759 }
1760
1761 /*******************************************************************
1762 Check if LDAP-Server supports a certain Extension (OID in string format)
1763 ********************************************************************/
1764
1765 BOOL smbldap_has_extension(LDAP *ld, const char *extension)
1766 {
1767 const char *attrs[] = { "supportedExtension", NULL };
1768 return smbldap_check_root_dse(ld, attrs, extension);
1769 }
1770
1771 /*******************************************************************
1772 Check if LDAP-Server holds a given namingContext
1773 ********************************************************************/
1774
1775 BOOL smbldap_has_naming_context(LDAP *ld, const char *naming_context)
1776 {
1777 const char *attrs[] = { "namingContexts", NULL };
1778 return smbldap_check_root_dse(ld, attrs, naming_context);
1779 }
1780
1781 BOOL smbldap_set_creds(struct smbldap_state *ldap_state, BOOL anon, const char *dn, const char *secret)
1782 {
1783 ldap_state->anonymous = anon;
1784
1785 /* free any previously set credential */
1786
1787 SAFE_FREE(ldap_state->bind_dn);
1788 if (ldap_state->bind_secret) {
1789 /* make sure secrets are zeroed out of memory */
1790 memset(ldap_state->bind_secret, '\0', strlen(ldap_state->bind_secret));
1791 SAFE_FREE(ldap_state->bind_secret);
1792 }
1793
1794 if ( ! anon) {
1795 ldap_state->bind_dn = SMB_STRDUP(dn);
1796 ldap_state->bind_secret = SMB_STRDUP(secret);
1797 }
1798
1799 return True;
1800 }
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