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r6334: revert 3.0.15pre1 changes. roll back to 3.0.14.
[Samba.git] / source / lib / smbldap.c
blob68084b04045e5b3f1c871758fd8bde1d7a4ce9d2
1 /*
2 Unix SMB/CIFS implementation.
3 LDAP protocol helper functions for SAMBA
4 Copyright (C) Jean François Micouleau 1998
5 Copyright (C) Gerald Carter 2001-2003
6 Copyright (C) Shahms King 2001
7 Copyright (C) Andrew Bartlett 2002-2003
8 Copyright (C) Stefan (metze) Metzmacher 2002-2003
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23
24 */
25
26 #include "includes.h"
27 #include "smbldap.h"
28
29 #ifndef LDAP_OPT_SUCCESS
30 #define LDAP_OPT_SUCCESS 0
31 #endif
32
33 /* Try not to hit the up or down server forever */
34
35 #define SMBLDAP_DONT_PING_TIME 10 /* ping only all 10 seconds */
36 #define SMBLDAP_NUM_RETRIES 8 /* retry only 8 times */
37
38 #define SMBLDAP_IDLE_TIME 150 /* After 2.5 minutes disconnect */
39
40
41 /* attributes used by Samba 2.2 */
42
43 ATTRIB_MAP_ENTRY attrib_map_v22[] = {
44 { LDAP_ATTR_UID, "uid" },
45 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
46 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
47 { LDAP_ATTR_UNIX_HOME, "homeDirectory" },
48 { LDAP_ATTR_PWD_LAST_SET, "pwdLastSet" },
49 { LDAP_ATTR_PWD_CAN_CHANGE, "pwdCanChange" },
50 { LDAP_ATTR_PWD_MUST_CHANGE, "pwdMustChange" },
51 { LDAP_ATTR_LOGON_TIME, "logonTime" },
52 { LDAP_ATTR_LOGOFF_TIME, "logoffTime" },
53 { LDAP_ATTR_KICKOFF_TIME, "kickoffTime" },
54 { LDAP_ATTR_CN, "cn" },
55 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
56 { LDAP_ATTR_HOME_PATH, "smbHome" },
57 { LDAP_ATTR_HOME_DRIVE, "homeDrive" },
58 { LDAP_ATTR_LOGON_SCRIPT, "scriptPath" },
59 { LDAP_ATTR_PROFILE_PATH, "profilePath" },
60 { LDAP_ATTR_DESC, "description" },
61 { LDAP_ATTR_USER_WKS, "userWorkstations"},
62 { LDAP_ATTR_USER_RID, "rid" },
63 { LDAP_ATTR_PRIMARY_GROUP_RID, "primaryGroupID"},
64 { LDAP_ATTR_LMPW, "lmPassword" },
65 { LDAP_ATTR_NTPW, "ntPassword" },
66 { LDAP_ATTR_DOMAIN, "domain" },
67 { LDAP_ATTR_OBJCLASS, "objectClass" },
68 { LDAP_ATTR_ACB_INFO, "acctFlags" },
69 { LDAP_ATTR_MOD_TIMESTAMP, "modifyTimestamp" },
70 { LDAP_ATTR_LIST_END, NULL }
71 };
72
73 ATTRIB_MAP_ENTRY attrib_map_to_delete_v22[] = {
74 { LDAP_ATTR_PWD_LAST_SET, "pwdLastSet" },
75 { LDAP_ATTR_PWD_CAN_CHANGE, "pwdCanChange" },
76 { LDAP_ATTR_PWD_MUST_CHANGE, "pwdMustChange" },
77 { LDAP_ATTR_LOGON_TIME, "logonTime" },
78 { LDAP_ATTR_LOGOFF_TIME, "logoffTime" },
79 { LDAP_ATTR_KICKOFF_TIME, "kickoffTime" },
80 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
81 { LDAP_ATTR_HOME_PATH, "smbHome" },
82 { LDAP_ATTR_HOME_DRIVE, "homeDrives" },
83 { LDAP_ATTR_LOGON_SCRIPT, "scriptPath" },
84 { LDAP_ATTR_PROFILE_PATH, "profilePath" },
85 { LDAP_ATTR_USER_WKS, "userWorkstations"},
86 { LDAP_ATTR_USER_RID, "rid" },
87 { LDAP_ATTR_PRIMARY_GROUP_RID, "primaryGroupID"},
88 { LDAP_ATTR_LMPW, "lmPassword" },
89 { LDAP_ATTR_NTPW, "ntPassword" },
90 { LDAP_ATTR_DOMAIN, "domain" },
91 { LDAP_ATTR_ACB_INFO, "acctFlags" },
92 { LDAP_ATTR_LIST_END, NULL }
93 };
94
95 /* attributes used by Samba 3.0's sambaSamAccount */
96
97 ATTRIB_MAP_ENTRY attrib_map_v30[] = {
98 { LDAP_ATTR_UID, "uid" },
99 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
100 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
101 { LDAP_ATTR_UNIX_HOME, "homeDirectory" },
102 { LDAP_ATTR_PWD_LAST_SET, "sambaPwdLastSet" },
103 { LDAP_ATTR_PWD_CAN_CHANGE, "sambaPwdCanChange" },
104 { LDAP_ATTR_PWD_MUST_CHANGE, "sambaPwdMustChange" },
105 { LDAP_ATTR_LOGON_TIME, "sambaLogonTime" },
106 { LDAP_ATTR_LOGOFF_TIME, "sambaLogoffTime" },
107 { LDAP_ATTR_KICKOFF_TIME, "sambaKickoffTime" },
108 { LDAP_ATTR_CN, "cn" },
109 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
110 { LDAP_ATTR_HOME_DRIVE, "sambaHomeDrive" },
111 { LDAP_ATTR_HOME_PATH, "sambaHomePath" },
112 { LDAP_ATTR_LOGON_SCRIPT, "sambaLogonScript" },
113 { LDAP_ATTR_PROFILE_PATH, "sambaProfilePath" },
114 { LDAP_ATTR_DESC, "description" },
115 { LDAP_ATTR_USER_WKS, "sambaUserWorkstations" },
116 { LDAP_ATTR_USER_SID, LDAP_ATTRIBUTE_SID },
117 { LDAP_ATTR_PRIMARY_GROUP_SID, "sambaPrimaryGroupSID" },
118 { LDAP_ATTR_LMPW, "sambaLMPassword" },
119 { LDAP_ATTR_NTPW, "sambaNTPassword" },
120 { LDAP_ATTR_DOMAIN, "sambaDomainName" },
121 { LDAP_ATTR_OBJCLASS, "objectClass" },
122 { LDAP_ATTR_ACB_INFO, "sambaAcctFlags" },
123 { LDAP_ATTR_MUNGED_DIAL, "sambaMungedDial" },
124 { LDAP_ATTR_BAD_PASSWORD_COUNT, "sambaBadPasswordCount" },
125 { LDAP_ATTR_BAD_PASSWORD_TIME, "sambaBadPasswordTime" },
126 { LDAP_ATTR_PWD_HISTORY, "sambaPasswordHistory" },
127 { LDAP_ATTR_MOD_TIMESTAMP, "modifyTimestamp" },
128 { LDAP_ATTR_LOGON_HOURS, "sambaLogonHours" },
129 { LDAP_ATTR_LIST_END, NULL }
130 };
131
132 ATTRIB_MAP_ENTRY attrib_map_to_delete_v30[] = {
133 { LDAP_ATTR_PWD_LAST_SET, "sambaPwdLastSet" },
134 { LDAP_ATTR_PWD_CAN_CHANGE, "sambaPwdCanChange" },
135 { LDAP_ATTR_PWD_MUST_CHANGE, "sambaPwdMustChange" },
136 { LDAP_ATTR_LOGON_TIME, "sambaLogonTime" },
137 { LDAP_ATTR_LOGOFF_TIME, "sambaLogoffTime" },
138 { LDAP_ATTR_KICKOFF_TIME, "sambaKickoffTime" },
139 { LDAP_ATTR_HOME_DRIVE, "sambaHomeDrive" },
140 { LDAP_ATTR_HOME_PATH, "sambaHomePath" },
141 { LDAP_ATTR_LOGON_SCRIPT, "sambaLogonScript" },
142 { LDAP_ATTR_PROFILE_PATH, "sambaProfilePath" },
143 { LDAP_ATTR_USER_WKS, "sambaUserWorkstations" },
144 { LDAP_ATTR_USER_SID, LDAP_ATTRIBUTE_SID },
145 { LDAP_ATTR_PRIMARY_GROUP_SID, "sambaPrimaryGroupSID" },
146 { LDAP_ATTR_LMPW, "sambaLMPassword" },
147 { LDAP_ATTR_NTPW, "sambaNTPassword" },
148 { LDAP_ATTR_DOMAIN, "sambaDomainName" },
149 { LDAP_ATTR_ACB_INFO, "sambaAcctFlags" },
150 { LDAP_ATTR_MUNGED_DIAL, "sambaMungedDial" },
151 { LDAP_ATTR_BAD_PASSWORD_COUNT, "sambaBadPasswordCount" },
152 { LDAP_ATTR_BAD_PASSWORD_TIME, "sambaBadPasswordTime" },
153 { LDAP_ATTR_PWD_HISTORY, "sambaPasswordHistory" },
154 { LDAP_ATTR_LOGON_HOURS, "sambaLogonHours" },
155 { LDAP_ATTR_LIST_END, NULL }
156 };
157
158 /* attributes used for allocating RIDs */
159
160 ATTRIB_MAP_ENTRY dominfo_attr_list[] = {
161 { LDAP_ATTR_DOMAIN, "sambaDomainName" },
162 { LDAP_ATTR_NEXT_RID, "sambaNextRid" },
163 { LDAP_ATTR_NEXT_USERRID, "sambaNextUserRid" },
164 { LDAP_ATTR_NEXT_GROUPRID, "sambaNextGroupRid" },
165 { LDAP_ATTR_DOM_SID, LDAP_ATTRIBUTE_SID },
166 { LDAP_ATTR_ALGORITHMIC_RID_BASE,"sambaAlgorithmicRidBase"},
167 { LDAP_ATTR_OBJCLASS, "objectClass" },
168 { LDAP_ATTR_LIST_END, NULL },
169 };
170
171 /* Samba 3.0 group mapping attributes */
172
173 ATTRIB_MAP_ENTRY groupmap_attr_list[] = {
174 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
175 { LDAP_ATTR_GROUP_SID, LDAP_ATTRIBUTE_SID },
176 { LDAP_ATTR_GROUP_TYPE, "sambaGroupType" },
177 { LDAP_ATTR_SID_LIST, "sambaSIDList" },
178 { LDAP_ATTR_DESC, "description" },
179 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
180 { LDAP_ATTR_CN, "cn" },
181 { LDAP_ATTR_OBJCLASS, "objectClass" },
182 { LDAP_ATTR_LIST_END, NULL }
183 };
184
185 ATTRIB_MAP_ENTRY groupmap_attr_list_to_delete[] = {
186 { LDAP_ATTR_GROUP_SID, LDAP_ATTRIBUTE_SID },
187 { LDAP_ATTR_GROUP_TYPE, "sambaGroupType" },
188 { LDAP_ATTR_DESC, "description" },
189 { LDAP_ATTR_DISPLAY_NAME, "displayName" },
190 { LDAP_ATTR_SID_LIST, "sambaSIDList" },
191 { LDAP_ATTR_LIST_END, NULL }
192 };
193
194 /* idmap_ldap sambaUnixIdPool */
195
196 ATTRIB_MAP_ENTRY idpool_attr_list[] = {
197 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
198 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
199 { LDAP_ATTR_OBJCLASS, "objectClass" },
200 { LDAP_ATTR_LIST_END, NULL }
201 };
202
203 ATTRIB_MAP_ENTRY sidmap_attr_list[] = {
204 { LDAP_ATTR_SID, LDAP_ATTRIBUTE_SID },
205 { LDAP_ATTR_UIDNUMBER, LDAP_ATTRIBUTE_UIDNUMBER},
206 { LDAP_ATTR_GIDNUMBER, LDAP_ATTRIBUTE_GIDNUMBER},
207 { LDAP_ATTR_OBJCLASS, "objectClass" },
208 { LDAP_ATTR_LIST_END, NULL }
209 };
210
211 /**********************************************************************
212 perform a simple table lookup and return the attribute name
213 **********************************************************************/
214
215 const char* get_attr_key2string( ATTRIB_MAP_ENTRY table[], int key )
216 {
217 int i = 0;
218
219 while ( table[i].attrib != LDAP_ATTR_LIST_END ) {
220 if ( table[i].attrib == key )
221 return table[i].name;
222 i++;
223 }
224
225 return NULL;
226 }
227
228
229 /**********************************************************************
230 Return the list of attribute names from a mapping table
231 **********************************************************************/
232
233 const char** get_attr_list( ATTRIB_MAP_ENTRY table[] )
234 {
235 const char **names;
236 int i = 0;
237
238 while ( table[i].attrib != LDAP_ATTR_LIST_END )
239 i++;
240 i++;
241
242 names = SMB_MALLOC_ARRAY( const char*, i );
243 if ( !names ) {
244 DEBUG(0,("get_attr_list: out of memory\n"));
245 return NULL;
246 }
247
248 i = 0;
249 while ( table[i].attrib != LDAP_ATTR_LIST_END ) {
250 names[i] = SMB_STRDUP( table[i].name );
251 i++;
252 }
253 names[i] = NULL;
254
255 return names;
256 }
257
258 /*********************************************************************
259 Cleanup
260 ********************************************************************/
261
262 void free_attr_list( const char **list )
263 {
264 int i = 0;
265
266 if ( !list )
267 return;
268
269 while ( list[i] ) {
270 SAFE_FREE( list[i] );
271 i+=1;
272 }
273
274 SAFE_FREE( list );
275 }
276
277 /*******************************************************************
278 find the ldap password
279 ******************************************************************/
280 static BOOL fetch_ldap_pw(char **dn, char** pw)
281 {
282 char *key = NULL;
283 size_t size;
284
285 *dn = smb_xstrdup(lp_ldap_admin_dn());
286
287 if (asprintf(&key, "%s/%s", SECRETS_LDAP_BIND_PW, *dn) < 0) {
288 SAFE_FREE(*dn);
289 DEBUG(0, ("fetch_ldap_pw: asprintf failed!\n"));
290 }
291
292 *pw=secrets_fetch(key, &size);
293 SAFE_FREE(key);
294
295 if (!size) {
296 /* Upgrade 2.2 style entry */
297 char *p;
298 char* old_style_key = SMB_STRDUP(*dn);
299 char *data;
300 fstring old_style_pw;
301
302 if (!old_style_key) {
303 DEBUG(0, ("fetch_ldap_pw: strdup failed!\n"));
304 return False;
305 }
306
307 for (p=old_style_key; *p; p++)
308 if (*p == ',') *p = '/';
309
310 data=secrets_fetch(old_style_key, &size);
311 if (!size && size < sizeof(old_style_pw)) {
312 DEBUG(0,("fetch_ldap_pw: neither ldap secret retrieved!\n"));
313 SAFE_FREE(old_style_key);
314 SAFE_FREE(*dn);
315 return False;
316 }
317
318 size = MIN(size, sizeof(fstring)-1);
319 strncpy(old_style_pw, data, size);
320 old_style_pw[size] = 0;
321
322 SAFE_FREE(data);
323
324 if (!secrets_store_ldap_pw(*dn, old_style_pw)) {
325 DEBUG(0,("fetch_ldap_pw: ldap secret could not be upgraded!\n"));
326 SAFE_FREE(old_style_key);
327 SAFE_FREE(*dn);
328 return False;
329 }
330 if (!secrets_delete(old_style_key)) {
331 DEBUG(0,("fetch_ldap_pw: old ldap secret could not be deleted!\n"));
332 }
333
334 SAFE_FREE(old_style_key);
335
336 *pw = smb_xstrdup(old_style_pw);
337 }
338
339 return True;
340 }
341
342 /*******************************************************************
343 Search an attribute and return the first value found.
344 ******************************************************************/
345
346 BOOL smbldap_get_single_attribute (LDAP * ldap_struct, LDAPMessage * entry,
347 const char *attribute, char *value,
348 int max_len)
349 {
350 char **values;
351
352 if ( !attribute )
353 return False;
354
355 value[0] = '\0';
356
357 if ((values = ldap_get_values (ldap_struct, entry, attribute)) == NULL) {
358 DEBUG (10, ("smbldap_get_single_attribute: [%s] = [<does not exist>]\n", attribute));
359
360 return False;
361 }
362
363 if (convert_string(CH_UTF8, CH_UNIX,values[0], -1, value, max_len, False) == (size_t)-1) {
364 DEBUG(1, ("smbldap_get_single_attribute: string conversion of [%s] = [%s] failed!\n",
365 attribute, values[0]));
366 ldap_value_free(values);
367 return False;
368 }
369
370 ldap_value_free(values);
371 #ifdef DEBUG_PASSWORDS
372 DEBUG (100, ("smbldap_get_single_attribute: [%s] = [%s]\n", attribute, value));
373 #endif
374 return True;
375 }
376
377 BOOL smbldap_get_single_pstring (LDAP * ldap_struct, LDAPMessage * entry,
378 const char *attribute, pstring value)
379 {
380 return smbldap_get_single_attribute(ldap_struct, entry,
381 attribute, value,
382 sizeof(pstring));
383 }
384
385 /************************************************************************
386 Routine to manage the LDAPMod structure array
387 manage memory used by the array, by each struct, and values
388 ***********************************************************************/
389
390 void smbldap_set_mod (LDAPMod *** modlist, int modop, const char *attribute, const char *value)
391 {
392 LDAPMod **mods;
393 int i;
394 int j;
395
396 mods = *modlist;
397
398 /* sanity checks on the mod values */
399
400 if (attribute == NULL || *attribute == '\0') {
401 return;
402 }
403
404 #if 0 /* commented out after discussion with abartlet. Do not reenable.
405 left here so other so re-add similar code --jerry */
406 if (value == NULL || *value == '\0')
407 return;
408 #endif
409
410 if (mods == NULL) {
411 mods = SMB_MALLOC_P(LDAPMod *);
412 if (mods == NULL) {
413 DEBUG(0, ("make_a_mod: out of memory!\n"));
414 return;
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 DEBUG(0, ("make_a_mod: out of memory!\n"));
428 return;
429 }
430 mods[i] = SMB_MALLOC_P(LDAPMod);
431 if (mods[i] == NULL) {
432 DEBUG(0, ("make_a_mod: out of memory!\n"));
433 return;
434 }
435 mods[i]->mod_op = modop;
436 mods[i]->mod_values = NULL;
437 mods[i]->mod_type = SMB_STRDUP(attribute);
438 mods[i + 1] = NULL;
439 }
440
441 if (value != NULL) {
442 char *utf8_value = NULL;
443
444 j = 0;
445 if (mods[i]->mod_values != NULL) {
446 for (; mods[i]->mod_values[j] != NULL; j++);
447 }
448 mods[i]->mod_values = SMB_REALLOC_ARRAY(mods[i]->mod_values, char *, j + 2);
449
450 if (mods[i]->mod_values == NULL) {
451 DEBUG (0, ("make_a_mod: Memory allocation failure!\n"));
452 return;
453 }
454
455 if (push_utf8_allocate(&utf8_value, value) == (size_t)-1) {
456 DEBUG (0, ("make_a_mod: String conversion failure!\n"));
457 return;
458 }
459
460 mods[i]->mod_values[j] = utf8_value;
461
462 mods[i]->mod_values[j + 1] = NULL;
463 }
464 *modlist = mods;
465 }
466
467 /**********************************************************************
468 Set attribute to newval in LDAP, regardless of what value the
469 attribute had in LDAP before.
470 *********************************************************************/
471
472 void smbldap_make_mod(LDAP *ldap_struct, LDAPMessage *existing,
473 LDAPMod ***mods,
474 const char *attribute, const char *newval)
475 {
476 char oldval[2048]; /* current largest allowed value is mungeddial */
477 BOOL existed;
478
479 if (attribute == NULL) {
480 /* This can actually happen for ldapsam_compat where we for
481 * example don't have a password history */
482 return;
483 }
484
485 if (existing != NULL) {
486 existed = smbldap_get_single_attribute(ldap_struct, existing, attribute, oldval, sizeof(oldval));
487 } else {
488 existed = False;
489 *oldval = '\0';
490 }
491
492 /* all of our string attributes are case insensitive */
493
494 if (existed && newval && (StrCaseCmp(oldval, newval) == 0)) {
495
496 /* Believe it or not, but LDAP will deny a delete and
497 an add at the same time if the values are the
498 same... */
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 smbldap_set_mod(mods, LDAP_MOD_DELETE, attribute, oldval);
515 }
516
517 /* Regardless of the real operation (add or modify)
518 we add the new value here. We rely on deleting
519 the old value, should it exist. */
520
521 if ((newval != NULL) && (strlen(newval) > 0)) {
522 smbldap_set_mod(mods, LDAP_MOD_ADD, attribute, newval);
523 }
524 }
525
526 /**********************************************************************
527 Some varients of the LDAP rebind code do not pass in the third 'arg'
528 pointer to a void*, so we try and work around it by assuming that the
529 value of the 'LDAP *' pointer is the same as the one we had passed in
530 **********************************************************************/
531
532 struct smbldap_state_lookup {
533 LDAP *ld;
534 struct smbldap_state *smbldap_state;
535 struct smbldap_state_lookup *prev, *next;
536 };
537
538 static struct smbldap_state_lookup *smbldap_state_lookup_list;
539
540 static struct smbldap_state *smbldap_find_state(LDAP *ld)
541 {
542 struct smbldap_state_lookup *t;
543
544 for (t = smbldap_state_lookup_list; t; t = t->next) {
545 if (t->ld == ld) {
546 return t->smbldap_state;
547 }
548 }
549 return NULL;
550 }
551
552 static void smbldap_delete_state(struct smbldap_state *smbldap_state)
553 {
554 struct smbldap_state_lookup *t;
555
556 for (t = smbldap_state_lookup_list; t; t = t->next) {
557 if (t->smbldap_state == smbldap_state) {
558 DLIST_REMOVE(smbldap_state_lookup_list, t);
559 SAFE_FREE(t);
560 return;
561 }
562 }
563 }
564
565 static void smbldap_store_state(LDAP *ld, struct smbldap_state *smbldap_state)
566 {
567 struct smbldap_state *tmp_ldap_state;
568 struct smbldap_state_lookup *t;
569 struct smbldap_state_lookup *tmp;
570
571 if ((tmp_ldap_state = smbldap_find_state(ld))) {
572 SMB_ASSERT(tmp_ldap_state == smbldap_state);
573 return;
574 }
575
576 t = SMB_XMALLOC_P(struct smbldap_state_lookup);
577 ZERO_STRUCTP(t);
578
579 DLIST_ADD_END(smbldap_state_lookup_list, t, tmp);
580 t->ld = ld;
581 t->smbldap_state = smbldap_state;
582 }
583
584 /*******************************************************************
585 open a connection to the ldap server.
586 ******************************************************************/
587 static int smbldap_open_connection (struct smbldap_state *ldap_state)
588
589 {
590 int rc = LDAP_SUCCESS;
591 int version;
592 BOOL ldap_v3 = False;
593 LDAP **ldap_struct = &ldap_state->ldap_struct;
594
595 #ifdef HAVE_LDAP_INITIALIZE
596 DEBUG(10, ("smbldap_open_connection: %s\n", ldap_state->uri));
597
598 if ((rc = ldap_initialize(ldap_struct, ldap_state->uri)) != LDAP_SUCCESS) {
599 DEBUG(0, ("ldap_initialize: %s\n", ldap_err2string(rc)));
600 return rc;
601 }
602 #else
603
604 /* Parse the string manually */
605
606 {
607 int port = 0;
608 fstring protocol;
609 fstring host;
610 const char *p = ldap_state->uri;
611 SMB_ASSERT(sizeof(protocol)>10 && sizeof(host)>254);
612
613 /* skip leading "URL:" (if any) */
614 if ( strnequal( p, "URL:", 4 ) ) {
615 p += 4;
616 }
617
618 sscanf(p, "%10[^:]://%254[^:/]:%d", protocol, host, &port);
619
620 if (port == 0) {
621 if (strequal(protocol, "ldap")) {
622 port = LDAP_PORT;
623 } else if (strequal(protocol, "ldaps")) {
624 port = LDAPS_PORT;
625 } else {
626 DEBUG(0, ("unrecognised protocol (%s)!\n", protocol));
627 }
628 }
629
630 if ((*ldap_struct = ldap_init(host, port)) == NULL) {
631 DEBUG(0, ("ldap_init failed !\n"));
632 return LDAP_OPERATIONS_ERROR;
633 }
634
635 if (strequal(protocol, "ldaps")) {
636 #ifdef LDAP_OPT_X_TLS
637 int tls = LDAP_OPT_X_TLS_HARD;
638 if (ldap_set_option (*ldap_struct, LDAP_OPT_X_TLS, &tls) != LDAP_SUCCESS)
639 {
640 DEBUG(0, ("Failed to setup a TLS session\n"));
641 }
642
643 DEBUG(3,("LDAPS option set...!\n"));
644 #else
645 DEBUG(0,("smbldap_open_connection: Secure connection not supported by LDAP client libraries!\n"));
646 return LDAP_OPERATIONS_ERROR;
647 #endif
648 }
649 }
650 #endif
651
652 /* Store the LDAP pointer in a lookup list */
653
654 smbldap_store_state(*ldap_struct, ldap_state);
655
656 /* Upgrade to LDAPv3 if possible */
657
658 if (ldap_get_option(*ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version) == LDAP_OPT_SUCCESS)
659 {
660 if (version != LDAP_VERSION3)
661 {
662 version = LDAP_VERSION3;
663 if (ldap_set_option (*ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version) == LDAP_OPT_SUCCESS) {
664 ldap_v3 = True;
665 }
666 } else {
667 ldap_v3 = True;
668 }
669 }
670
671 if (lp_ldap_ssl() == LDAP_SSL_START_TLS) {
672 #ifdef LDAP_OPT_X_TLS
673 if (ldap_v3) {
674 if ((rc = ldap_start_tls_s (*ldap_struct, NULL, NULL)) != LDAP_SUCCESS)
675 {
676 DEBUG(0,("Failed to issue the StartTLS instruction: %s\n",
677 ldap_err2string(rc)));
678 return rc;
679 }
680 DEBUG (3, ("StartTLS issued: using a TLS connection\n"));
681 } else {
682
683 DEBUG(0, ("Need LDAPv3 for Start TLS\n"));
684 return LDAP_OPERATIONS_ERROR;
685 }
686 #else
687 DEBUG(0,("smbldap_open_connection: StartTLS not supported by LDAP client libraries!\n"));
688 return LDAP_OPERATIONS_ERROR;
689 #endif
690 }
691
692 DEBUG(2, ("smbldap_open_connection: connection opened\n"));
693 return rc;
694 }
695
696
697 /*******************************************************************
698 a rebind function for authenticated referrals
699 This version takes a void* that we can shove useful stuff in :-)
700 ******************************************************************/
701 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
702 #else
703 static int rebindproc_with_state (LDAP * ld, char **whop, char **credp,
704 int *methodp, int freeit, void *arg)
705 {
706 struct smbldap_state *ldap_state = arg;
707
708 /** @TODO Should we be doing something to check what servers we rebind to?
709 Could we get a referral to a machine that we don't want to give our
710 username and password to? */
711
712 if (freeit) {
713 SAFE_FREE(*whop);
714 memset(*credp, '\0', strlen(*credp));
715 SAFE_FREE(*credp);
716 } else {
717 DEBUG(5,("rebind_proc_with_state: Rebinding as \"%s\"\n",
718 ldap_state->bind_dn));
719
720 *whop = SMB_STRDUP(ldap_state->bind_dn);
721 if (!*whop) {
722 return LDAP_NO_MEMORY;
723 }
724 *credp = SMB_STRDUP(ldap_state->bind_secret);
725 if (!*credp) {
726 SAFE_FREE(*whop);
727 return LDAP_NO_MEMORY;
728 }
729 *methodp = LDAP_AUTH_SIMPLE;
730 }
731
732 GetTimeOfDay(&ldap_state->last_rebind);
733
734 return 0;
735 }
736 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
737
738 /*******************************************************************
739 a rebind function for authenticated referrals
740 This version takes a void* that we can shove useful stuff in :-)
741 and actually does the connection.
742 ******************************************************************/
743 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
744 static int rebindproc_connect_with_state (LDAP *ldap_struct,
745 LDAP_CONST char *url,
746 ber_tag_t request,
747 ber_int_t msgid, void *arg)
748 {
749 struct smbldap_state *ldap_state = arg;
750 int rc;
751 DEBUG(5,("rebindproc_connect_with_state: Rebinding as \"%s\"\n",
752 ldap_state->bind_dn));
753
754 /** @TODO Should we be doing something to check what servers we rebind to?
755 Could we get a referral to a machine that we don't want to give our
756 username and password to? */
757
758 rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
759
760 GetTimeOfDay(&ldap_state->last_rebind);
761
762 return rc;
763 }
764 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
765
766 /*******************************************************************
767 Add a rebind function for authenticated referrals
768 ******************************************************************/
769 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
770 #else
771 # if LDAP_SET_REBIND_PROC_ARGS == 2
772 static int rebindproc (LDAP *ldap_struct, char **whop, char **credp,
773 int *method, int freeit )
774 {
775 struct smbldap_state *ldap_state = smbldap_find_state(ldap_struct);
776
777 return rebindproc_with_state(ldap_struct, whop, credp,
778 method, freeit, ldap_state);
779
780 }
781 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
782 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
783
784 /*******************************************************************
785 a rebind function for authenticated referrals
786 this also does the connection, but no void*.
787 ******************************************************************/
788 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
789 # if LDAP_SET_REBIND_PROC_ARGS == 2
790 static int rebindproc_connect (LDAP * ld, LDAP_CONST char *url, int request,
791 ber_int_t msgid)
792 {
793 struct smbldap_state *ldap_state = smbldap_find_state(ld);
794
795 return rebindproc_connect_with_state(ld, url, (ber_tag_t)request, msgid,
796 ldap_state);
797 }
798 # endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
799 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
800
801 /*******************************************************************
802 connect to the ldap server under system privilege.
803 ******************************************************************/
804 static int smbldap_connect_system(struct smbldap_state *ldap_state, LDAP * ldap_struct)
805 {
806 int rc;
807 char *ldap_dn;
808 char *ldap_secret;
809 int version;
810
811 /* get the password */
812 if (!fetch_ldap_pw(&ldap_dn, &ldap_secret)) {
813 DEBUG(0, ("ldap_connect_system: Failed to retrieve password from secrets.tdb\n"));
814 return LDAP_INVALID_CREDENTIALS;
815 }
816
817 ldap_state->bind_dn = ldap_dn;
818 ldap_state->bind_secret = ldap_secret;
819
820 /* removed the sasl_bind_s "EXTERNAL" stuff, as my testsuite
821 (OpenLDAP) doesnt' seem to support it */
822
823 DEBUG(10,("ldap_connect_system: Binding to ldap server %s as \"%s\"\n",
824 ldap_state->uri, ldap_dn));
825
826 #if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
827 # if LDAP_SET_REBIND_PROC_ARGS == 2
828 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect);
829 # endif
830 # if LDAP_SET_REBIND_PROC_ARGS == 3
831 ldap_set_rebind_proc(ldap_struct, &rebindproc_connect_with_state, (void *)ldap_state);
832 # endif
833 #else /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
834 # if LDAP_SET_REBIND_PROC_ARGS == 2
835 ldap_set_rebind_proc(ldap_struct, &rebindproc);
836 # endif
837 # if LDAP_SET_REBIND_PROC_ARGS == 3
838 ldap_set_rebind_proc(ldap_struct, &rebindproc_with_state, (void *)ldap_state);
839 # endif
840 #endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
841
842 rc = ldap_simple_bind_s(ldap_struct, ldap_dn, ldap_secret);
843
844 if (rc != LDAP_SUCCESS) {
845 char *ld_error = NULL;
846 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
847 &ld_error);
848 DEBUG(ldap_state->num_failures ? 2 : 0,
849 ("failed to bind to server %s with dn=\"%s\" Error: %s\n\t%s\n",
850 ldap_state->uri,
851 ldap_dn ? ldap_dn : "(unknown)", ldap_err2string(rc),
852 ld_error ? ld_error : "(unknown)"));
853 SAFE_FREE(ld_error);
854 ldap_state->num_failures++;
855 return rc;
856 }
857
858 ldap_state->num_failures = 0;
859
860 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
861
862 if (smbldap_has_control(ldap_state, ADS_PAGE_CTL_OID) && version == 3) {
863 ldap_state->paged_results = True;
864 }
865
866 DEBUG(3, ("ldap_connect_system: succesful connection to the LDAP server\n"));
867 DEBUGADD(3, ("ldap_connect_system: LDAP server %s support paged results\n", ldap_state->paged_results?"does":"does not"));
868 return rc;
869 }
870
871 /**********************************************************************
872 Connect to LDAP server (called before every ldap operation)
873 *********************************************************************/
874 static int smbldap_open(struct smbldap_state *ldap_state)
875 {
876 int rc, opt_rc;
877 BOOL reopen = False;
878
879 SMB_ASSERT(ldap_state);
880 #ifndef NO_LDAP_SECURITY
881 if (geteuid() != 0) {
882 DEBUG(0, ("smbldap_open: cannot access LDAP when not root..\n"));
883 return LDAP_INSUFFICIENT_ACCESS;
884 }
885 #endif
886
887 if ((ldap_state->ldap_struct != NULL) && ((ldap_state->last_ping + SMBLDAP_DONT_PING_TIME) < time(NULL))) {
888
889 struct sockaddr_un addr;
890 socklen_t len = sizeof(addr);
891 int sd;
892
893 opt_rc = ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_DESC, &sd);
894 if (opt_rc == 0 && (getpeername(sd, (struct sockaddr *) &addr, &len)) < 0 )
895 reopen = True;
896
897 #ifdef HAVE_UNIXSOCKET
898 if (opt_rc == 0 && addr.sun_family == AF_UNIX)
899 reopen = True;
900 #endif
901 if (reopen) {
902 /* the other end has died. reopen. */
903 ldap_unbind_ext(ldap_state->ldap_struct, NULL, NULL);
904 ldap_state->ldap_struct = NULL;
905 ldap_state->last_ping = (time_t)0;
906 } else {
907 ldap_state->last_ping = time(NULL);
908 }
909 }
910
911 if (ldap_state->ldap_struct != NULL) {
912 DEBUG(11,("smbldap_open: already connected to the LDAP server\n"));
913 return LDAP_SUCCESS;
914 }
915
916 if ((rc = smbldap_open_connection(ldap_state))) {
917 return rc;
918 }
919
920 if ((rc = smbldap_connect_system(ldap_state, ldap_state->ldap_struct))) {
921 ldap_unbind_ext(ldap_state->ldap_struct, NULL, NULL);
922 ldap_state->ldap_struct = NULL;
923 return rc;
924 }
925
926
927 ldap_state->last_ping = time(NULL);
928 ldap_state->pid = sys_getpid();
929 DEBUG(4,("The LDAP server is succesfully connected\n"));
930
931 return LDAP_SUCCESS;
932 }
933
934 /**********************************************************************
935 Disconnect from LDAP server
936 *********************************************************************/
937 static NTSTATUS smbldap_close(struct smbldap_state *ldap_state)
938 {
939 if (!ldap_state)
940 return NT_STATUS_INVALID_PARAMETER;
941
942 if (ldap_state->ldap_struct != NULL) {
943 ldap_unbind_ext(ldap_state->ldap_struct, NULL, NULL);
944 ldap_state->ldap_struct = NULL;
945 }
946
947 smbldap_delete_state(ldap_state);
948
949 DEBUG(5,("The connection to the LDAP server was closed\n"));
950 /* maybe free the results here --metze */
951
952
953
954 return NT_STATUS_OK;
955 }
956
957 static BOOL got_alarm;
958
959 static void (*old_handler)(int);
960
961 static void gotalarm_sig(int dummy)
962 {
963 got_alarm = True;
964 }
965
966 static int another_ldap_try(struct smbldap_state *ldap_state, int *rc,
967 int *attempts, time_t endtime)
968 {
969 time_t now = time(NULL);
970 int open_rc = LDAP_SERVER_DOWN;
971
972 if (*rc != LDAP_SERVER_DOWN)
973 goto no_next;
974
975 if (now >= endtime) {
976 smbldap_close(ldap_state);
977 *rc = LDAP_TIMEOUT;
978 goto no_next;
979 }
980
981 if (*attempts == 0) {
982 got_alarm = False;
983 old_handler = CatchSignal(SIGALRM, gotalarm_sig);
984 alarm(endtime - now);
985
986 if (ldap_state->pid != sys_getpid())
987 smbldap_close(ldap_state);
988 }
989
990 while (1) {
991
992 if (*attempts != 0)
993 smb_msleep(1000);
994
995 *attempts += 1;
996
997 open_rc = smbldap_open(ldap_state);
998
999 if (open_rc == LDAP_SUCCESS) {
1000 ldap_state->last_use = now;
1001 return True;
1002 }
1003
1004 if (got_alarm) {
1005 *rc = LDAP_TIMEOUT;
1006 break;
1007 }
1008
1009 if (open_rc != LDAP_SUCCESS) {
1010 DEBUG(1, ("Connection to LDAP server failed for the "
1011 "%d try!\n", *attempts));
1012 }
1013 }
1014
1015 no_next:
1016 CatchSignal(SIGALRM, old_handler);
1017 alarm(0);
1018 ldap_state->last_use = now;
1019 return False;
1020 }
1021
1022 /*********************************************************************
1023 ********************************************************************/
1024
1025 int smbldap_search(struct smbldap_state *ldap_state,
1026 const char *base, int scope, const char *filter,
1027 const char *attrs[], int attrsonly,
1028 LDAPMessage **res)
1029 {
1030 int rc = LDAP_SERVER_DOWN;
1031 int attempts = 0;
1032 char *utf8_filter;
1033 time_t endtime = time(NULL)+lp_ldap_timeout();
1034
1035 SMB_ASSERT(ldap_state);
1036
1037 DEBUG(5,("smbldap_search: base => [%s], filter => [%s], scope => [%d]\n",
1038 base, filter, scope));
1039
1040 if (ldap_state->last_rebind.tv_sec > 0) {
1041 struct timeval tval;
1042 SMB_BIG_INT tdiff = 0;
1043 int sleep_time = 0;
1044
1045 ZERO_STRUCT(tval);
1046 GetTimeOfDay(&tval);
1047
1048 tdiff = usec_time_diff(&tval, &ldap_state->last_rebind);
1049 tdiff /= 1000; /* Convert to milliseconds. */
1050
1051 sleep_time = lp_ldap_replication_sleep()-(int)tdiff;
1052 sleep_time = MIN(sleep_time, MAX_LDAP_REPLICATION_SLEEP_TIME);
1053
1054 if (sleep_time > 0) {
1055 /* we wait for the LDAP replication */
1056 DEBUG(5,("smbldap_search: waiting %d milliseconds for LDAP replication.\n",sleep_time));
1057 smb_msleep(sleep_time);
1058 DEBUG(5,("smbldap_search: go on!\n"));
1059 }
1060 ZERO_STRUCT(ldap_state->last_rebind);
1061 }
1062
1063 if (push_utf8_allocate(&utf8_filter, filter) == (size_t)-1) {
1064 return LDAP_NO_MEMORY;
1065 }
1066
1067 while (another_ldap_try(ldap_state, &rc, &attempts, endtime))
1068 rc = ldap_search_s(ldap_state->ldap_struct, base, scope,
1069 utf8_filter, attrs, attrsonly, res);
1070
1071 SAFE_FREE(utf8_filter);
1072 return rc;
1073 }
1074
1075 int smbldap_modify(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1076 {
1077 int rc = LDAP_SERVER_DOWN;
1078 int attempts = 0;
1079 char *utf8_dn;
1080 time_t endtime = time(NULL)+lp_ldap_timeout();
1081
1082 SMB_ASSERT(ldap_state);
1083
1084 DEBUG(5,("smbldap_modify: dn => [%s]\n", dn ));
1085
1086 if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1087 return LDAP_NO_MEMORY;
1088 }
1089
1090 while (another_ldap_try(ldap_state, &rc, &attempts, endtime))
1091 rc = ldap_modify_s(ldap_state->ldap_struct, utf8_dn, attrs);
1092
1093 SAFE_FREE(utf8_dn);
1094 return rc;
1095 }
1096
1097 int smbldap_add(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1098 {
1099 int rc = LDAP_SERVER_DOWN;
1100 int attempts = 0;
1101 char *utf8_dn;
1102 time_t endtime = time(NULL)+lp_ldap_timeout();
1103
1104 SMB_ASSERT(ldap_state);
1105
1106 DEBUG(5,("smbldap_add: dn => [%s]\n", dn ));
1107
1108 if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1109 return LDAP_NO_MEMORY;
1110 }
1111
1112 while (another_ldap_try(ldap_state, &rc, &attempts, endtime))
1113 rc = ldap_add_s(ldap_state->ldap_struct, utf8_dn, attrs);
1114
1115 SAFE_FREE(utf8_dn);
1116 return rc;
1117 }
1118
1119 int smbldap_delete(struct smbldap_state *ldap_state, const char *dn)
1120 {
1121 int rc = LDAP_SERVER_DOWN;
1122 int attempts = 0;
1123 char *utf8_dn;
1124 time_t endtime = time(NULL)+lp_ldap_timeout();
1125
1126 SMB_ASSERT(ldap_state);
1127
1128 DEBUG(5,("smbldap_delete: dn => [%s]\n", dn ));
1129
1130 if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1131 return LDAP_NO_MEMORY;
1132 }
1133
1134 while (another_ldap_try(ldap_state, &rc, &attempts, endtime))
1135 rc = ldap_delete_s(ldap_state->ldap_struct, utf8_dn);
1136
1137 SAFE_FREE(utf8_dn);
1138 return rc;
1139 }
1140
1141 int smbldap_extended_operation(struct smbldap_state *ldap_state,
1142 LDAP_CONST char *reqoid, struct berval *reqdata,
1143 LDAPControl **serverctrls, LDAPControl **clientctrls,
1144 char **retoidp, struct berval **retdatap)
1145 {
1146 int rc = LDAP_SERVER_DOWN;
1147 int attempts = 0;
1148 time_t endtime = time(NULL)+lp_ldap_timeout();
1149
1150 if (!ldap_state)
1151 return (-1);
1152
1153 while (another_ldap_try(ldap_state, &rc, &attempts, endtime))
1154 rc = ldap_extended_operation_s(ldap_state->ldap_struct, reqoid,
1155 reqdata, serverctrls,
1156 clientctrls, retoidp, retdatap);
1157 return rc;
1158 }
1159
1160 /*******************************************************************
1161 run the search by name.
1162 ******************************************************************/
1163 int smbldap_search_suffix (struct smbldap_state *ldap_state, const char *filter,
1164 const char **search_attr, LDAPMessage ** result)
1165 {
1166 int scope = LDAP_SCOPE_SUBTREE;
1167 int rc;
1168
1169 rc = smbldap_search(ldap_state, lp_ldap_suffix(), scope, filter, search_attr, 0, result);
1170
1171 if (rc != LDAP_SUCCESS) {
1172 char *ld_error = NULL;
1173 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
1174 &ld_error);
1175 DEBUG(0,("smbldap_search_suffix: Problem during the LDAP search: %s (%s)\n",
1176 ld_error?ld_error:"(unknown)", ldap_err2string (rc)));
1177 SAFE_FREE(ld_error);
1178 }
1179
1180 return rc;
1181 }
1182
1183 static void smbldap_idle_fn(void **data, time_t *interval, time_t now)
1184 {
1185 struct smbldap_state *state = (struct smbldap_state *)(*data);
1186
1187 if (state->ldap_struct == NULL) {
1188 DEBUG(10,("ldap connection not connected...\n"));
1189 return;
1190 }
1191
1192 if ((state->last_use+SMBLDAP_IDLE_TIME) > now) {
1193 DEBUG(10,("ldap connection not idle...\n"));
1194 return;
1195 }
1196
1197 DEBUG(7,("ldap connection idle...closing connection\n"));
1198 smbldap_close(state);
1199 }
1200
1201 /**********************************************************************
1202 Housekeeping
1203 *********************************************************************/
1204
1205 void smbldap_free_struct(struct smbldap_state **ldap_state)
1206 {
1207 smbldap_close(*ldap_state);
1208
1209 if ((*ldap_state)->bind_secret) {
1210 memset((*ldap_state)->bind_secret, '\0', strlen((*ldap_state)->bind_secret));
1211 }
1212
1213 SAFE_FREE((*ldap_state)->bind_dn);
1214 SAFE_FREE((*ldap_state)->bind_secret);
1215
1216 smb_unregister_idle_event((*ldap_state)->event_id);
1217
1218 *ldap_state = NULL;
1219
1220 /* No need to free any further, as it is talloc()ed */
1221 }
1222
1223
1224 /**********************************************************************
1225 Intitalise the 'general' ldap structures, on which ldap operations may be conducted
1226 *********************************************************************/
1227
1228 NTSTATUS smbldap_init(TALLOC_CTX *mem_ctx, const char *location, struct smbldap_state **smbldap_state)
1229 {
1230 *smbldap_state = TALLOC_ZERO_P(mem_ctx, struct smbldap_state);
1231 if (!*smbldap_state) {
1232 DEBUG(0, ("talloc() failed for ldapsam private_data!\n"));
1233 return NT_STATUS_NO_MEMORY;
1234 }
1235
1236 if (location) {
1237 (*smbldap_state)->uri = talloc_strdup(mem_ctx, location);
1238 } else {
1239 (*smbldap_state)->uri = "ldap://localhost";
1240 }
1241
1242 (*smbldap_state)->event_id =
1243 smb_register_idle_event(smbldap_idle_fn, (void *)(*smbldap_state),
1244 SMBLDAP_IDLE_TIME);
1245
1246 if ((*smbldap_state)->event_id == SMB_EVENT_ID_INVALID) {
1247 DEBUG(0,("Failed to register LDAP idle event!\n"));
1248 return NT_STATUS_INVALID_HANDLE;
1249 }
1250
1251 return NT_STATUS_OK;
1252 }
1253
1254 /**********************************************************************
1255 Add the sambaDomain to LDAP, so we don't have to search for this stuff
1256 again. This is a once-add operation for now.
1257
1258 TODO: Add other attributes, and allow modification.
1259 *********************************************************************/
1260 static NTSTATUS add_new_domain_info(struct smbldap_state *ldap_state,
1261 const char *domain_name)
1262 {
1263 fstring sid_string;
1264 fstring algorithmic_rid_base_string;
1265 pstring filter, dn;
1266 LDAPMod **mods = NULL;
1267 int rc;
1268 int ldap_op;
1269 LDAPMessage *result = NULL;
1270 int num_result;
1271 const char **attr_list;
1272 uid_t u_low, u_high;
1273 gid_t g_low, g_high;
1274 uint32 rid_low, rid_high;
1275
1276 slprintf (filter, sizeof (filter) - 1, "(&(%s=%s)(objectclass=%s))",
1277 get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOMAIN),
1278 domain_name, LDAP_OBJ_DOMINFO);
1279
1280 attr_list = get_attr_list( dominfo_attr_list );
1281 rc = smbldap_search_suffix(ldap_state, filter, attr_list, &result);
1282 free_attr_list( attr_list );
1283
1284 if (rc != LDAP_SUCCESS) {
1285 return NT_STATUS_UNSUCCESSFUL;
1286 }
1287
1288 num_result = ldap_count_entries(ldap_state->ldap_struct, result);
1289
1290 if (num_result > 1) {
1291 DEBUG (0, ("More than domain with that name exists: bailing out!\n"));
1292 ldap_msgfree(result);
1293 return NT_STATUS_UNSUCCESSFUL;
1294 }
1295
1296 /* Check if we need to add an entry */
1297 DEBUG(3,("Adding new domain\n"));
1298 ldap_op = LDAP_MOD_ADD;
1299
1300 pstr_sprintf(dn, "%s=%s,%s", get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOMAIN),
1301 domain_name, lp_ldap_suffix());
1302
1303 /* Free original search */
1304 ldap_msgfree(result);
1305
1306 /* make the changes - the entry *must* not already have samba attributes */
1307 smbldap_set_mod(&mods, LDAP_MOD_ADD, get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOMAIN),
1308 domain_name);
1309
1310 /* If we don't have an entry, then ask secrets.tdb for what it thinks.
1311 It may choose to make it up */
1312
1313 sid_to_string(sid_string, get_global_sam_sid());
1314 smbldap_set_mod(&mods, LDAP_MOD_ADD, get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOM_SID), sid_string);
1315
1316 slprintf(algorithmic_rid_base_string, sizeof(algorithmic_rid_base_string) - 1, "%i", algorithmic_rid_base());
1317 smbldap_set_mod(&mods, LDAP_MOD_ADD, get_attr_key2string(dominfo_attr_list, LDAP_ATTR_ALGORITHMIC_RID_BASE),
1318 algorithmic_rid_base_string);
1319 smbldap_set_mod(&mods, LDAP_MOD_ADD, "objectclass", LDAP_OBJ_DOMINFO);
1320
1321 /* add the sambaNext[User|Group]Rid attributes if the idmap ranges are set.
1322 TODO: fix all the places where the line between idmap and normal operations
1323 needed by smbd gets fuzzy --jerry 2003-08-11 */
1324
1325 if ( lp_idmap_uid(&u_low, &u_high) && lp_idmap_gid(&g_low, &g_high)
1326 && get_free_rid_range(&rid_low, &rid_high) )
1327 {
1328 fstring rid_str;
1329
1330 fstr_sprintf( rid_str, "%i", rid_high|USER_RID_TYPE );
1331 DEBUG(10,("setting next available user rid [%s]\n", rid_str));
1332 smbldap_set_mod(&mods, LDAP_MOD_ADD,
1333 get_attr_key2string(dominfo_attr_list, LDAP_ATTR_NEXT_USERRID),
1334 rid_str);
1335
1336 fstr_sprintf( rid_str, "%i", rid_high|GROUP_RID_TYPE );
1337 DEBUG(10,("setting next available group rid [%s]\n", rid_str));
1338 smbldap_set_mod(&mods, LDAP_MOD_ADD,
1339 get_attr_key2string(dominfo_attr_list, LDAP_ATTR_NEXT_GROUPRID),
1340 rid_str);
1341
1342 }
1343
1344
1345 switch(ldap_op)
1346 {
1347 case LDAP_MOD_ADD:
1348 rc = smbldap_add(ldap_state, dn, mods);
1349 break;
1350 case LDAP_MOD_REPLACE:
1351 rc = smbldap_modify(ldap_state, dn, mods);
1352 break;
1353 default:
1354 DEBUG(0,("Wrong LDAP operation type: %d!\n", ldap_op));
1355 return NT_STATUS_INVALID_PARAMETER;
1356 }
1357
1358 if (rc!=LDAP_SUCCESS) {
1359 char *ld_error = NULL;
1360 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING, &ld_error);
1361 DEBUG(1,("failed to %s domain dn= %s with: %s\n\t%s\n",
1362 ldap_op == LDAP_MOD_ADD ? "add" : "modify",
1363 dn, ldap_err2string(rc),
1364 ld_error?ld_error:"unknown"));
1365 SAFE_FREE(ld_error);
1366
1367 ldap_mods_free(mods, True);
1368 return NT_STATUS_UNSUCCESSFUL;
1369 }
1370
1371 DEBUG(2,("added: domain = %s in the LDAP database\n", domain_name));
1372 ldap_mods_free(mods, True);
1373 return NT_STATUS_OK;
1374 }
1375
1376 /**********************************************************************
1377 Search for the domain info entry
1378 *********************************************************************/
1379 NTSTATUS smbldap_search_domain_info(struct smbldap_state *ldap_state,
1380 LDAPMessage ** result, const char *domain_name,
1381 BOOL try_add)
1382 {
1383 NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
1384 pstring filter;
1385 int rc;
1386 const char **attr_list;
1387 int count;
1388
1389 pstr_sprintf(filter, "(&(objectClass=%s)(%s=%s))",
1390 LDAP_OBJ_DOMINFO,
1391 get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOMAIN),
1392 domain_name);
1393
1394 DEBUG(2, ("Searching for:[%s]\n", filter));
1395
1396
1397 attr_list = get_attr_list( dominfo_attr_list );
1398 rc = smbldap_search_suffix(ldap_state, filter, attr_list , result);
1399 free_attr_list( attr_list );
1400
1401 if (rc != LDAP_SUCCESS) {
1402 DEBUG(2,("Problem during LDAPsearch: %s\n", ldap_err2string (rc)));
1403 DEBUG(2,("Query was: %s, %s\n", lp_ldap_suffix(), filter));
1404 } else if (ldap_count_entries(ldap_state->ldap_struct, *result) < 1) {
1405 DEBUG(3, ("Got no domain info entries for domain\n"));
1406 ldap_msgfree(*result);
1407 *result = NULL;
1408 if (try_add && NT_STATUS_IS_OK(ret = add_new_domain_info(ldap_state, domain_name))) {
1409 return smbldap_search_domain_info(ldap_state, result, domain_name, False);
1410 }
1411 else {
1412 DEBUG(0, ("Adding domain info for %s failed with %s\n",
1413 domain_name, nt_errstr(ret)));
1414 return ret;
1415 }
1416 } else if ((count = ldap_count_entries(ldap_state->ldap_struct, *result)) > 1) {
1417 DEBUG(0, ("Got too many (%d) domain info entries for domain %s\n",
1418 count, domain_name));
1419 ldap_msgfree(*result);
1420 *result = NULL;
1421 return ret;
1422 } else {
1423 return NT_STATUS_OK;
1424 }
1425
1426 return ret;
1427 }
1428
1429 /*******************************************************************
1430 Return a copy of the DN for a LDAPMessage. Convert from utf8 to CH_UNIX.
1431 ********************************************************************/
1432
1433 char *smbldap_get_dn(LDAP *ld, LDAPMessage *entry)
1434 {
1435 char *utf8_dn, *unix_dn;
1436
1437 utf8_dn = ldap_get_dn(ld, entry);
1438 if (!utf8_dn) {
1439 DEBUG (5, ("smbldap_get_dn: ldap_get_dn failed\n"));
1440 return NULL;
1441 }
1442 if (pull_utf8_allocate(&unix_dn, utf8_dn) == (size_t)-1) {
1443 DEBUG (0, ("smbldap_get_dn: String conversion failure utf8 [%s]\n", utf8_dn));
1444 return NULL;
1445 }
1446 ldap_memfree(utf8_dn);
1447 return unix_dn;
1448 }
1449
1450 /*******************************************************************
1451 Check if root-dse has a certain Control or Extension
1452 ********************************************************************/
1453
1454 static BOOL smbldap_check_root_dse(struct smbldap_state *ldap_state, const char **attrs, const char *value)
1455 {
1456 LDAPMessage *msg = NULL;
1457 LDAPMessage *entry = NULL;
1458 char **values = NULL;
1459 int rc, num_result, num_values, i;
1460 BOOL result = False;
1461
1462 if (!attrs[0]) {
1463 DEBUG(3,("smbldap_check_root_dse: nothing to look for\n"));
1464 return False;
1465 }
1466
1467 if (!strequal(attrs[0], "supportedExtension") &&
1468 !strequal(attrs[0], "supportedControl")) {
1469 DEBUG(3,("smbldap_check_root_dse: no idea what to query root-dse for: %s ?\n", attrs[0]));
1470 return False;
1471 }
1472
1473 rc = ldap_search_s(ldap_state->ldap_struct, "", LDAP_SCOPE_BASE,
1474 "(objectclass=*)", attrs, 0 , &msg);
1475
1476 if (rc != LDAP_SUCCESS) {
1477 DEBUG(3,("smbldap_check_root_dse: Could not search rootDSE\n"));
1478 return False;
1479 }
1480
1481 num_result = ldap_count_entries(ldap_state->ldap_struct, msg);
1482
1483 if (num_result != 1) {
1484 DEBUG(3,("smbldap_check_root_dse: Expected one rootDSE, got %d\n", num_result));
1485 goto done;
1486 }
1487
1488 entry = ldap_first_entry(ldap_state->ldap_struct, msg);
1489
1490 if (entry == NULL) {
1491 DEBUG(3,("smbldap_check_root_dse: Could not retrieve rootDSE\n"));
1492 goto done;
1493 }
1494
1495 values = ldap_get_values(ldap_state->ldap_struct, entry, attrs[0]);
1496
1497 if (values == NULL) {
1498 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not support any %s\n", attrs[0]));
1499 goto done;
1500 }
1501
1502 num_values = ldap_count_values(values);
1503
1504 if (num_values == 0) {
1505 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not have any %s\n", attrs[0]));
1506 goto done;
1507 }
1508
1509 for (i=0; i<num_values; i++) {
1510 if (strcmp(values[i], value) == 0)
1511 result = True;
1512 }
1513
1514
1515 done:
1516 if (values != NULL)
1517 ldap_value_free(values);
1518 if (msg != NULL)
1519 ldap_msgfree(msg);
1520
1521 return result;
1522 }
1523
1524 /*******************************************************************
1525 Check if LDAP-Server supports a certain Control (OID in string format)
1526 ********************************************************************/
1527
1528 BOOL smbldap_has_control(struct smbldap_state *ldap_state, const char *control)
1529 {
1530 const char *attrs[] = { "supportedControl", NULL };
1531 return smbldap_check_root_dse(ldap_state, attrs, control);
1532 }
1533
1534 /*******************************************************************
1535 Check if LDAP-Server supports a certain Extension (OID in string format)
1536 ********************************************************************/
1537
1538 BOOL smbldap_has_extension(struct smbldap_state *ldap_state, const char *extension)
1539 {
1540 const char *attrs[] = { "supportedExtension", NULL };
1541 return smbldap_check_root_dse(ldap_state, attrs, extension);
1542 }
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