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r4904: sync up with 3.0 for 3.0.11pre2
[Samba.git] / source / lib / smbldap.c
blob7908bc254dac23ba77bbf4931909e84edc6b6760
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 char** get_attr_list( ATTRIB_MAP_ENTRY table[] )
234 {
235 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( 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( 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 with dn= %s Error: %s\n\t%s\n",
850 ldap_dn ? ldap_dn : "(unknown)", ldap_err2string(rc),
851 ld_error ? ld_error : "(unknown)"));
852 SAFE_FREE(ld_error);
853 ldap_state->num_failures++;
854 return rc;
855 }
856
857 ldap_state->num_failures = 0;
858
859 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version);
860
861 if (smbldap_has_control(ldap_state, ADS_PAGE_CTL_OID) && version == 3) {
862 ldap_state->paged_results = True;
863 }
864
865 DEBUG(3, ("ldap_connect_system: succesful connection to the LDAP server\n"));
866 DEBUGADD(3, ("ldap_connect_system: LDAP server %s support paged results\n", ldap_state->paged_results?"does":"does not"));
867 return rc;
868 }
869
870 /**********************************************************************
871 Connect to LDAP server (called before every ldap operation)
872 *********************************************************************/
873 static int smbldap_open(struct smbldap_state *ldap_state)
874 {
875 int rc;
876 SMB_ASSERT(ldap_state);
877
878 #ifndef NO_LDAP_SECURITY
879 if (geteuid() != 0) {
880 DEBUG(0, ("smbldap_open: cannot access LDAP when not root..\n"));
881 return LDAP_INSUFFICIENT_ACCESS;
882 }
883 #endif
884
885 if ((ldap_state->ldap_struct != NULL) && ((ldap_state->last_ping + SMBLDAP_DONT_PING_TIME) < time(NULL))) {
886 struct sockaddr_un addr;
887 socklen_t len = sizeof(addr);
888 int sd;
889 if (ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_DESC, &sd) == 0 &&
890 getpeername(sd, (struct sockaddr *) &addr, &len) < 0) {
891 /* the other end has died. reopen. */
892 ldap_unbind_ext(ldap_state->ldap_struct, NULL, NULL);
893 ldap_state->ldap_struct = NULL;
894 ldap_state->last_ping = (time_t)0;
895 } else {
896 ldap_state->last_ping = time(NULL);
897 }
898 }
899
900 if (ldap_state->ldap_struct != NULL) {
901 DEBUG(11,("smbldap_open: already connected to the LDAP server\n"));
902 return LDAP_SUCCESS;
903 }
904
905 if ((rc = smbldap_open_connection(ldap_state))) {
906 return rc;
907 }
908
909 if ((rc = smbldap_connect_system(ldap_state, ldap_state->ldap_struct))) {
910 ldap_unbind_ext(ldap_state->ldap_struct, NULL, NULL);
911 ldap_state->ldap_struct = NULL;
912 return rc;
913 }
914
915
916 ldap_state->last_ping = time(NULL);
917 ldap_state->pid = sys_getpid();
918 DEBUG(4,("The LDAP server is succesfully connected\n"));
919
920 return LDAP_SUCCESS;
921 }
922
923 /**********************************************************************
924 Disconnect from LDAP server
925 *********************************************************************/
926 static NTSTATUS smbldap_close(struct smbldap_state *ldap_state)
927 {
928 if (!ldap_state)
929 return NT_STATUS_INVALID_PARAMETER;
930
931 if (ldap_state->ldap_struct != NULL) {
932 ldap_unbind_ext(ldap_state->ldap_struct, NULL, NULL);
933 ldap_state->ldap_struct = NULL;
934 }
935
936 smbldap_delete_state(ldap_state);
937
938 DEBUG(5,("The connection to the LDAP server was closed\n"));
939 /* maybe free the results here --metze */
940
941
942
943 return NT_STATUS_OK;
944 }
945
946 static BOOL got_alarm;
947
948 static void (*old_handler)(int);
949
950 static void gotalarm_sig(int dummy)
951 {
952 got_alarm = True;
953 }
954
955 static int another_ldap_try(struct smbldap_state *ldap_state, int *rc,
956 int *attempts, time_t endtime)
957 {
958 time_t now = time(NULL);
959 int open_rc = LDAP_SERVER_DOWN;
960
961 if (*rc != LDAP_SERVER_DOWN)
962 goto no_next;
963
964 now = time(NULL);
965
966 if (now >= endtime) {
967 smbldap_close(ldap_state);
968 *rc = LDAP_TIMEOUT;
969 goto no_next;
970 }
971
972 if (*attempts == 0) {
973 got_alarm = False;
974 old_handler = CatchSignal(SIGALRM, gotalarm_sig);
975 alarm(endtime - now);
976
977 if (ldap_state->pid != sys_getpid())
978 smbldap_close(ldap_state);
979 }
980
981 while (1) {
982
983 if (*attempts != 0)
984 smb_msleep(1000);
985
986 *attempts += 1;
987
988 smbldap_close(ldap_state);
989 open_rc = smbldap_open(ldap_state);
990
991 if (open_rc == LDAP_SUCCESS) {
992 ldap_state->last_use = now;
993 return True;
994 }
995
996 if (got_alarm) {
997 *rc = LDAP_TIMEOUT;
998 break;
999 }
1000
1001 if (open_rc != LDAP_SUCCESS) {
1002 DEBUG(1, ("Connection to LDAP server failed for the "
1003 "%d try!\n", *attempts));
1004 }
1005 }
1006
1007 no_next:
1008 CatchSignal(SIGALRM, old_handler);
1009 alarm(0);
1010 ldap_state->last_use = now;
1011 return False;
1012 }
1013
1014 /*********************************************************************
1015 ********************************************************************/
1016
1017 int smbldap_search(struct smbldap_state *ldap_state,
1018 const char *base, int scope, const char *filter,
1019 char *attrs[], int attrsonly,
1020 LDAPMessage **res)
1021 {
1022 int rc = LDAP_SERVER_DOWN;
1023 int attempts = 0;
1024 char *utf8_filter;
1025 time_t endtime = time(NULL)+lp_ldap_timeout();
1026
1027 SMB_ASSERT(ldap_state);
1028
1029 DEBUG(5,("smbldap_search: base => [%s], filter => [%s], scope => [%d]\n",
1030 base, filter, scope));
1031
1032 if (ldap_state->last_rebind.tv_sec > 0) {
1033 struct timeval tval;
1034 SMB_BIG_INT tdiff = 0;
1035 int sleep_time = 0;
1036
1037 ZERO_STRUCT(tval);
1038 GetTimeOfDay(&tval);
1039
1040 tdiff = usec_time_diff(&tval, &ldap_state->last_rebind);
1041 tdiff /= 1000; /* Convert to milliseconds. */
1042
1043 sleep_time = lp_ldap_replication_sleep()-(int)tdiff;
1044 sleep_time = MIN(sleep_time, MAX_LDAP_REPLICATION_SLEEP_TIME);
1045
1046 if (sleep_time > 0) {
1047 /* we wait for the LDAP replication */
1048 DEBUG(5,("smbldap_search: waiting %d milliseconds for LDAP replication.\n",sleep_time));
1049 smb_msleep(sleep_time);
1050 DEBUG(5,("smbldap_search: go on!\n"));
1051 }
1052 ZERO_STRUCT(ldap_state->last_rebind);
1053 }
1054
1055 if (push_utf8_allocate(&utf8_filter, filter) == (size_t)-1) {
1056 return LDAP_NO_MEMORY;
1057 }
1058
1059 while (another_ldap_try(ldap_state, &rc, &attempts, endtime))
1060 rc = ldap_search_s(ldap_state->ldap_struct, base, scope,
1061 utf8_filter, attrs, attrsonly, res);
1062
1063 SAFE_FREE(utf8_filter);
1064 return rc;
1065 }
1066
1067 int smbldap_modify(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1068 {
1069 int rc = LDAP_SERVER_DOWN;
1070 int attempts = 0;
1071 char *utf8_dn;
1072 time_t endtime = time(NULL)+lp_ldap_timeout();
1073
1074 SMB_ASSERT(ldap_state);
1075
1076 DEBUG(5,("smbldap_modify: dn => [%s]\n", dn ));
1077
1078 if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1079 return LDAP_NO_MEMORY;
1080 }
1081
1082 while (another_ldap_try(ldap_state, &rc, &attempts, endtime))
1083 rc = ldap_modify_s(ldap_state->ldap_struct, utf8_dn, attrs);
1084
1085 SAFE_FREE(utf8_dn);
1086 return rc;
1087 }
1088
1089 int smbldap_add(struct smbldap_state *ldap_state, const char *dn, LDAPMod *attrs[])
1090 {
1091 int rc = LDAP_SERVER_DOWN;
1092 int attempts = 0;
1093 char *utf8_dn;
1094 time_t endtime = time(NULL)+lp_ldap_timeout();
1095
1096 SMB_ASSERT(ldap_state);
1097
1098 DEBUG(5,("smbldap_add: dn => [%s]\n", dn ));
1099
1100 if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1101 return LDAP_NO_MEMORY;
1102 }
1103
1104 while (another_ldap_try(ldap_state, &rc, &attempts, endtime))
1105 rc = ldap_add_s(ldap_state->ldap_struct, utf8_dn, attrs);
1106
1107 SAFE_FREE(utf8_dn);
1108 return rc;
1109 }
1110
1111 int smbldap_delete(struct smbldap_state *ldap_state, const char *dn)
1112 {
1113 int rc = LDAP_SERVER_DOWN;
1114 int attempts = 0;
1115 char *utf8_dn;
1116 time_t endtime = time(NULL)+lp_ldap_timeout();
1117
1118 SMB_ASSERT(ldap_state);
1119
1120 DEBUG(5,("smbldap_delete: dn => [%s]\n", dn ));
1121
1122 if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
1123 return LDAP_NO_MEMORY;
1124 }
1125
1126 while (another_ldap_try(ldap_state, &rc, &attempts, endtime))
1127 rc = ldap_delete_s(ldap_state->ldap_struct, utf8_dn);
1128
1129 SAFE_FREE(utf8_dn);
1130 return rc;
1131 }
1132
1133 int smbldap_extended_operation(struct smbldap_state *ldap_state,
1134 LDAP_CONST char *reqoid, struct berval *reqdata,
1135 LDAPControl **serverctrls, LDAPControl **clientctrls,
1136 char **retoidp, struct berval **retdatap)
1137 {
1138 int rc = LDAP_SERVER_DOWN;
1139 int attempts = 0;
1140 time_t endtime = time(NULL)+lp_ldap_timeout();
1141
1142 if (!ldap_state)
1143 return (-1);
1144
1145 while (another_ldap_try(ldap_state, &rc, &attempts, endtime))
1146 rc = ldap_extended_operation_s(ldap_state->ldap_struct, reqoid,
1147 reqdata, serverctrls,
1148 clientctrls, retoidp, retdatap);
1149 return rc;
1150 }
1151
1152 /*******************************************************************
1153 run the search by name.
1154 ******************************************************************/
1155 int smbldap_search_suffix (struct smbldap_state *ldap_state, const char *filter,
1156 char **search_attr, LDAPMessage ** result)
1157 {
1158 int scope = LDAP_SCOPE_SUBTREE;
1159 int rc;
1160
1161 rc = smbldap_search(ldap_state, lp_ldap_suffix(), scope, filter, search_attr, 0, result);
1162
1163 if (rc != LDAP_SUCCESS) {
1164 char *ld_error = NULL;
1165 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
1166 &ld_error);
1167 DEBUG(0,("smbldap_search_suffix: Problem during the LDAP search: %s (%s)\n",
1168 ld_error?ld_error:"(unknown)", ldap_err2string (rc)));
1169 SAFE_FREE(ld_error);
1170 }
1171
1172 return rc;
1173 }
1174
1175 static void smbldap_idle_fn(void **data, time_t *interval, time_t now)
1176 {
1177 struct smbldap_state *state = (struct smbldap_state *)(*data);
1178
1179 if (state->ldap_struct == NULL) {
1180 DEBUG(10,("ldap connection not connected...\n"));
1181 return;
1182 }
1183
1184 if ((state->last_use+SMBLDAP_IDLE_TIME) > now) {
1185 DEBUG(10,("ldap connection not idle...\n"));
1186 return;
1187 }
1188
1189 DEBUG(7,("ldap connection idle...closing connection\n"));
1190 smbldap_close(state);
1191 }
1192
1193 /**********************************************************************
1194 Housekeeping
1195 *********************************************************************/
1196
1197 void smbldap_free_struct(struct smbldap_state **ldap_state)
1198 {
1199 smbldap_close(*ldap_state);
1200
1201 if ((*ldap_state)->bind_secret) {
1202 memset((*ldap_state)->bind_secret, '\0', strlen((*ldap_state)->bind_secret));
1203 }
1204
1205 SAFE_FREE((*ldap_state)->bind_dn);
1206 SAFE_FREE((*ldap_state)->bind_secret);
1207
1208 smb_unregister_idle_event((*ldap_state)->event_id);
1209
1210 *ldap_state = NULL;
1211
1212 /* No need to free any further, as it is talloc()ed */
1213 }
1214
1215
1216 /**********************************************************************
1217 Intitalise the 'general' ldap structures, on which ldap operations may be conducted
1218 *********************************************************************/
1219
1220 NTSTATUS smbldap_init(TALLOC_CTX *mem_ctx, const char *location, struct smbldap_state **smbldap_state)
1221 {
1222 *smbldap_state = TALLOC_ZERO_P(mem_ctx, struct smbldap_state);
1223 if (!*smbldap_state) {
1224 DEBUG(0, ("talloc() failed for ldapsam private_data!\n"));
1225 return NT_STATUS_NO_MEMORY;
1226 }
1227
1228 if (location) {
1229 (*smbldap_state)->uri = talloc_strdup(mem_ctx, location);
1230 } else {
1231 (*smbldap_state)->uri = "ldap://localhost";
1232 }
1233
1234 (*smbldap_state)->event_id =
1235 smb_register_idle_event(smbldap_idle_fn, (void *)(*smbldap_state),
1236 SMBLDAP_IDLE_TIME);
1237
1238 if ((*smbldap_state)->event_id == SMB_EVENT_ID_INVALID) {
1239 DEBUG(0,("Failed to register LDAP idle event!\n"));
1240 return NT_STATUS_INVALID_HANDLE;
1241 }
1242
1243 return NT_STATUS_OK;
1244 }
1245
1246 /**********************************************************************
1247 Add the sambaDomain to LDAP, so we don't have to search for this stuff
1248 again. This is a once-add operation for now.
1249
1250 TODO: Add other attributes, and allow modification.
1251 *********************************************************************/
1252 static NTSTATUS add_new_domain_info(struct smbldap_state *ldap_state,
1253 const char *domain_name)
1254 {
1255 fstring sid_string;
1256 fstring algorithmic_rid_base_string;
1257 pstring filter, dn;
1258 LDAPMod **mods = NULL;
1259 int rc;
1260 int ldap_op;
1261 LDAPMessage *result = NULL;
1262 int num_result;
1263 char **attr_list;
1264 uid_t u_low, u_high;
1265 gid_t g_low, g_high;
1266 uint32 rid_low, rid_high;
1267
1268 slprintf (filter, sizeof (filter) - 1, "(&(%s=%s)(objectclass=%s))",
1269 get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOMAIN),
1270 domain_name, LDAP_OBJ_DOMINFO);
1271
1272 attr_list = get_attr_list( dominfo_attr_list );
1273 rc = smbldap_search_suffix(ldap_state, filter, attr_list, &result);
1274 free_attr_list( attr_list );
1275
1276 if (rc != LDAP_SUCCESS) {
1277 return NT_STATUS_UNSUCCESSFUL;
1278 }
1279
1280 num_result = ldap_count_entries(ldap_state->ldap_struct, result);
1281
1282 if (num_result > 1) {
1283 DEBUG (0, ("More than domain with that name exists: bailing out!\n"));
1284 ldap_msgfree(result);
1285 return NT_STATUS_UNSUCCESSFUL;
1286 }
1287
1288 /* Check if we need to add an entry */
1289 DEBUG(3,("Adding new domain\n"));
1290 ldap_op = LDAP_MOD_ADD;
1291
1292 pstr_sprintf(dn, "%s=%s,%s", get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOMAIN),
1293 domain_name, lp_ldap_suffix());
1294
1295 /* Free original search */
1296 ldap_msgfree(result);
1297
1298 /* make the changes - the entry *must* not already have samba attributes */
1299 smbldap_set_mod(&mods, LDAP_MOD_ADD, get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOMAIN),
1300 domain_name);
1301
1302 /* If we don't have an entry, then ask secrets.tdb for what it thinks.
1303 It may choose to make it up */
1304
1305 sid_to_string(sid_string, get_global_sam_sid());
1306 smbldap_set_mod(&mods, LDAP_MOD_ADD, get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOM_SID), sid_string);
1307
1308 slprintf(algorithmic_rid_base_string, sizeof(algorithmic_rid_base_string) - 1, "%i", algorithmic_rid_base());
1309 smbldap_set_mod(&mods, LDAP_MOD_ADD, get_attr_key2string(dominfo_attr_list, LDAP_ATTR_ALGORITHMIC_RID_BASE),
1310 algorithmic_rid_base_string);
1311 smbldap_set_mod(&mods, LDAP_MOD_ADD, "objectclass", LDAP_OBJ_DOMINFO);
1312
1313 /* add the sambaNext[User|Group]Rid attributes if the idmap ranges are set.
1314 TODO: fix all the places where the line between idmap and normal operations
1315 needed by smbd gets fuzzy --jerry 2003-08-11 */
1316
1317 if ( lp_idmap_uid(&u_low, &u_high) && lp_idmap_gid(&g_low, &g_high)
1318 && get_free_rid_range(&rid_low, &rid_high) )
1319 {
1320 fstring rid_str;
1321
1322 fstr_sprintf( rid_str, "%i", rid_high|USER_RID_TYPE );
1323 DEBUG(10,("setting next available user rid [%s]\n", rid_str));
1324 smbldap_set_mod(&mods, LDAP_MOD_ADD,
1325 get_attr_key2string(dominfo_attr_list, LDAP_ATTR_NEXT_USERRID),
1326 rid_str);
1327
1328 fstr_sprintf( rid_str, "%i", rid_high|GROUP_RID_TYPE );
1329 DEBUG(10,("setting next available group rid [%s]\n", rid_str));
1330 smbldap_set_mod(&mods, LDAP_MOD_ADD,
1331 get_attr_key2string(dominfo_attr_list, LDAP_ATTR_NEXT_GROUPRID),
1332 rid_str);
1333
1334 }
1335
1336
1337 switch(ldap_op)
1338 {
1339 case LDAP_MOD_ADD:
1340 rc = smbldap_add(ldap_state, dn, mods);
1341 break;
1342 case LDAP_MOD_REPLACE:
1343 rc = smbldap_modify(ldap_state, dn, mods);
1344 break;
1345 default:
1346 DEBUG(0,("Wrong LDAP operation type: %d!\n", ldap_op));
1347 return NT_STATUS_INVALID_PARAMETER;
1348 }
1349
1350 if (rc!=LDAP_SUCCESS) {
1351 char *ld_error = NULL;
1352 ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING, &ld_error);
1353 DEBUG(1,("failed to %s domain dn= %s with: %s\n\t%s\n",
1354 ldap_op == LDAP_MOD_ADD ? "add" : "modify",
1355 dn, ldap_err2string(rc),
1356 ld_error?ld_error:"unknown"));
1357 SAFE_FREE(ld_error);
1358
1359 ldap_mods_free(mods, True);
1360 return NT_STATUS_UNSUCCESSFUL;
1361 }
1362
1363 DEBUG(2,("added: domain = %s in the LDAP database\n", domain_name));
1364 ldap_mods_free(mods, True);
1365 return NT_STATUS_OK;
1366 }
1367
1368 /**********************************************************************
1369 Search for the domain info entry
1370 *********************************************************************/
1371 NTSTATUS smbldap_search_domain_info(struct smbldap_state *ldap_state,
1372 LDAPMessage ** result, const char *domain_name,
1373 BOOL try_add)
1374 {
1375 NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
1376 pstring filter;
1377 int rc;
1378 char **attr_list;
1379 int count;
1380
1381 pstr_sprintf(filter, "(&(objectClass=%s)(%s=%s))",
1382 LDAP_OBJ_DOMINFO,
1383 get_attr_key2string(dominfo_attr_list, LDAP_ATTR_DOMAIN),
1384 domain_name);
1385
1386 DEBUG(2, ("Searching for:[%s]\n", filter));
1387
1388
1389 attr_list = get_attr_list( dominfo_attr_list );
1390 rc = smbldap_search_suffix(ldap_state, filter, attr_list , result);
1391 free_attr_list( attr_list );
1392
1393 if (rc != LDAP_SUCCESS) {
1394 DEBUG(2,("Problem during LDAPsearch: %s\n", ldap_err2string (rc)));
1395 DEBUG(2,("Query was: %s, %s\n", lp_ldap_suffix(), filter));
1396 } else if (ldap_count_entries(ldap_state->ldap_struct, *result) < 1) {
1397 DEBUG(3, ("Got no domain info entries for domain\n"));
1398 ldap_msgfree(*result);
1399 *result = NULL;
1400 if (try_add && NT_STATUS_IS_OK(ret = add_new_domain_info(ldap_state, domain_name))) {
1401 return smbldap_search_domain_info(ldap_state, result, domain_name, False);
1402 }
1403 else {
1404 DEBUG(0, ("Adding domain info for %s failed with %s\n",
1405 domain_name, nt_errstr(ret)));
1406 return ret;
1407 }
1408 } else if ((count = ldap_count_entries(ldap_state->ldap_struct, *result)) > 1) {
1409 DEBUG(0, ("Got too many (%d) domain info entries for domain %s\n",
1410 count, domain_name));
1411 ldap_msgfree(*result);
1412 *result = NULL;
1413 return ret;
1414 } else {
1415 return NT_STATUS_OK;
1416 }
1417
1418 return ret;
1419 }
1420
1421 /*******************************************************************
1422 Return a copy of the DN for a LDAPMessage. Convert from utf8 to CH_UNIX.
1423 ********************************************************************/
1424
1425 char *smbldap_get_dn(LDAP *ld, LDAPMessage *entry)
1426 {
1427 char *utf8_dn, *unix_dn;
1428
1429 utf8_dn = ldap_get_dn(ld, entry);
1430 if (!utf8_dn) {
1431 DEBUG (5, ("smbldap_get_dn: ldap_get_dn failed\n"));
1432 return NULL;
1433 }
1434 if (pull_utf8_allocate(&unix_dn, utf8_dn) == (size_t)-1) {
1435 DEBUG (0, ("smbldap_get_dn: String conversion failure utf8 [%s]\n", utf8_dn));
1436 return NULL;
1437 }
1438 ldap_memfree(utf8_dn);
1439 return unix_dn;
1440 }
1441
1442 /*******************************************************************
1443 Check if root-dse has a certain Control or Extension
1444 ********************************************************************/
1445
1446 static BOOL smbldap_check_root_dse(struct smbldap_state *ldap_state, const char **attrs, const char *value)
1447 {
1448 LDAPMessage *msg = NULL;
1449 LDAPMessage *entry = NULL;
1450 char **values = NULL;
1451 int rc, num_result, num_values, i;
1452 BOOL result = False;
1453
1454 if (!attrs[0]) {
1455 DEBUG(3,("smbldap_check_root_dse: nothing to look for\n"));
1456 return False;
1457 }
1458
1459 if (!strequal(attrs[0], "supportedExtension") &&
1460 !strequal(attrs[0], "supportedControl")) {
1461 DEBUG(3,("smbldap_check_root_dse: no idea what to query root-dse for: %s ?\n", attrs[0]));
1462 return False;
1463 }
1464
1465 rc = ldap_search_s(ldap_state->ldap_struct, "", LDAP_SCOPE_BASE,
1466 "(objectclass=*)", attrs, 0 , &msg);
1467
1468 if (rc != LDAP_SUCCESS) {
1469 DEBUG(3,("smbldap_check_root_dse: Could not search rootDSE\n"));
1470 return False;
1471 }
1472
1473 num_result = ldap_count_entries(ldap_state->ldap_struct, msg);
1474
1475 if (num_result != 1) {
1476 DEBUG(3,("smbldap_check_root_dse: Expected one rootDSE, got %d\n", num_result));
1477 goto done;
1478 }
1479
1480 entry = ldap_first_entry(ldap_state->ldap_struct, msg);
1481
1482 if (entry == NULL) {
1483 DEBUG(3,("smbldap_check_root_dse: Could not retrieve rootDSE\n"));
1484 goto done;
1485 }
1486
1487 values = ldap_get_values(ldap_state->ldap_struct, entry, attrs[0]);
1488
1489 if (values == NULL) {
1490 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not support any %s\n", attrs[0]));
1491 goto done;
1492 }
1493
1494 num_values = ldap_count_values(values);
1495
1496 if (num_values == 0) {
1497 DEBUG(5,("smbldap_check_root_dse: LDAP Server does not have any %s\n", attrs[0]));
1498 goto done;
1499 }
1500
1501 for (i=0; i<num_values; i++) {
1502 if (strcmp(values[i], value) == 0)
1503 result = True;
1504 }
1505
1506
1507 done:
1508 if (values != NULL)
1509 ldap_value_free(values);
1510 if (msg != NULL)
1511 ldap_msgfree(msg);
1512
1513 return result;
1514 }
1515
1516 /*******************************************************************
1517 Check if LDAP-Server supports a certain Control (OID in string format)
1518 ********************************************************************/
1519
1520 BOOL smbldap_has_control(struct smbldap_state *ldap_state, const char *control)
1521 {
1522 const char *attrs[] = { "supportedControl", NULL };
1523 return smbldap_check_root_dse(ldap_state, attrs, control);
1524 }
1525
1526 /*******************************************************************
1527 Check if LDAP-Server supports a certain Extension (OID in string format)
1528 ********************************************************************/
1529
1530 BOOL smbldap_has_extension(struct smbldap_state *ldap_state, const char *extension)
1531 {
1532 const char *attrs[] = { "supportedExtension", NULL };
1533 return smbldap_check_root_dse(ldap_state, attrs, extension);
1534 }
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