78d0de951c54bd15b22e07a9068bad776af74fb4
[samba.git] / source4 / ldap_server / ldap_backend.c
1 /* 
2    Unix SMB/CIFS implementation.
3    LDAP server
4    Copyright (C) Stefan Metzmacher 2004
5    Copyright (C) Matthias Dieter Wallnöfer 2009
6    
7    This program is free software; you can redistribute it and/or modify
8    it under the terms of the GNU General Public License as published by
9    the Free Software Foundation; either version 3 of the License, or
10    (at your option) any later version.
11    
12    This program is distributed in the hope that it will be useful,
13    but WITHOUT ANY WARRANTY; without even the implied warranty of
14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15    GNU General Public License for more details.
16    
17    You should have received a copy of the GNU General Public License
18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
19 */
20
21 #include "includes.h"
22 #include "ldap_server/ldap_server.h"
23 #include "../lib/util/dlinklist.h"
24 #include "auth/credentials/credentials.h"
25 #include "auth/gensec/gensec.h"
26 #include "auth/gensec/gensec_internal.h" /* TODO: remove this */
27 #include "auth/common_auth.h"
28 #include "param/param.h"
29 #include "samba/service_stream.h"
30 #include "dsdb/samdb/samdb.h"
31 #include <ldb_errors.h>
32 #include <ldb_module.h>
33 #include "ldb_wrap.h"
34 #include "lib/tsocket/tsocket.h"
35 #include "libcli/ldap/ldap_proto.h"
36 #include "source4/auth/auth.h"
37
38 static int map_ldb_error(TALLOC_CTX *mem_ctx, int ldb_err,
39         const char *add_err_string, const char **errstring)
40 {
41         WERROR err;
42
43         /* Certain LDB modules need to return very special WERROR codes. Proof
44          * for them here and if they exist skip the rest of the mapping. */
45         if (add_err_string != NULL) {
46                 char *endptr;
47                 strtol(add_err_string, &endptr, 16);
48                 if (endptr != add_err_string) {
49                         *errstring = add_err_string;
50                         return ldb_err;
51                 }
52         }
53
54         /* Otherwise we calculate here a generic, but appropriate WERROR. */
55
56         switch (ldb_err) {
57         case LDB_SUCCESS:
58                 err = WERR_OK;
59         break;
60         case LDB_ERR_OPERATIONS_ERROR:
61                 err = WERR_DS_OPERATIONS_ERROR;
62         break;
63         case LDB_ERR_PROTOCOL_ERROR:
64                 err = WERR_DS_PROTOCOL_ERROR;
65         break;
66         case LDB_ERR_TIME_LIMIT_EXCEEDED:
67                 err = WERR_DS_TIMELIMIT_EXCEEDED;
68         break;
69         case LDB_ERR_SIZE_LIMIT_EXCEEDED:
70                 err = WERR_DS_SIZELIMIT_EXCEEDED;
71         break;
72         case LDB_ERR_COMPARE_FALSE:
73                 err = WERR_DS_COMPARE_FALSE;
74         break;
75         case LDB_ERR_COMPARE_TRUE:
76                 err = WERR_DS_COMPARE_TRUE;
77         break;
78         case LDB_ERR_AUTH_METHOD_NOT_SUPPORTED:
79                 err = WERR_DS_AUTH_METHOD_NOT_SUPPORTED;
80         break;
81         case LDB_ERR_STRONG_AUTH_REQUIRED:
82                 err = WERR_DS_STRONG_AUTH_REQUIRED;
83         break;
84         case LDB_ERR_REFERRAL:
85                 err = WERR_DS_REFERRAL;
86         break;
87         case LDB_ERR_ADMIN_LIMIT_EXCEEDED:
88                 err = WERR_DS_ADMIN_LIMIT_EXCEEDED;
89         break;
90         case LDB_ERR_UNSUPPORTED_CRITICAL_EXTENSION:
91                 err = WERR_DS_UNAVAILABLE_CRIT_EXTENSION;
92         break;
93         case LDB_ERR_CONFIDENTIALITY_REQUIRED:
94                 err = WERR_DS_CONFIDENTIALITY_REQUIRED;
95         break;
96         case LDB_ERR_SASL_BIND_IN_PROGRESS:
97                 err = WERR_DS_BUSY;
98         break;
99         case LDB_ERR_NO_SUCH_ATTRIBUTE:
100                 err = WERR_DS_NO_ATTRIBUTE_OR_VALUE;
101         break;
102         case LDB_ERR_UNDEFINED_ATTRIBUTE_TYPE:
103                 err = WERR_DS_ATTRIBUTE_TYPE_UNDEFINED;
104         break;
105         case LDB_ERR_INAPPROPRIATE_MATCHING:
106                 err = WERR_DS_INAPPROPRIATE_MATCHING;
107         break;
108         case LDB_ERR_CONSTRAINT_VIOLATION:
109                 err = WERR_DS_CONSTRAINT_VIOLATION;
110         break;
111         case LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS:
112                 err = WERR_DS_ATTRIBUTE_OR_VALUE_EXISTS;
113         break;
114         case LDB_ERR_INVALID_ATTRIBUTE_SYNTAX:
115                 err = WERR_DS_INVALID_ATTRIBUTE_SYNTAX;
116         break;
117         case LDB_ERR_NO_SUCH_OBJECT:
118                 err = WERR_DS_NO_SUCH_OBJECT;
119         break;
120         case LDB_ERR_ALIAS_PROBLEM:
121                 err = WERR_DS_ALIAS_PROBLEM;
122         break;
123         case LDB_ERR_INVALID_DN_SYNTAX:
124                 err = WERR_DS_INVALID_DN_SYNTAX;
125         break;
126         case LDB_ERR_ALIAS_DEREFERENCING_PROBLEM:
127                 err = WERR_DS_ALIAS_DEREF_PROBLEM;
128         break;
129         case LDB_ERR_INAPPROPRIATE_AUTHENTICATION:
130                 err = WERR_DS_INAPPROPRIATE_AUTH;
131         break;
132         case LDB_ERR_INVALID_CREDENTIALS:
133                 err = WERR_ACCESS_DENIED;
134         break;
135         case LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS:
136                 err = WERR_DS_INSUFF_ACCESS_RIGHTS;
137         break;
138         case LDB_ERR_BUSY:
139                 err = WERR_DS_BUSY;
140         break;
141         case LDB_ERR_UNAVAILABLE:
142                 err = WERR_DS_UNAVAILABLE;
143         break;
144         case LDB_ERR_UNWILLING_TO_PERFORM:
145                 err = WERR_DS_UNWILLING_TO_PERFORM;
146         break;
147         case LDB_ERR_LOOP_DETECT:
148                 err = WERR_DS_LOOP_DETECT;
149         break;
150         case LDB_ERR_NAMING_VIOLATION:
151                 err = WERR_DS_NAMING_VIOLATION;
152         break;
153         case LDB_ERR_OBJECT_CLASS_VIOLATION:
154                 err = WERR_DS_OBJ_CLASS_VIOLATION;
155         break;
156         case LDB_ERR_NOT_ALLOWED_ON_NON_LEAF:
157                 err = WERR_DS_CANT_ON_NON_LEAF;
158         break;
159         case LDB_ERR_NOT_ALLOWED_ON_RDN:
160                 err = WERR_DS_CANT_ON_RDN;
161         break;
162         case LDB_ERR_ENTRY_ALREADY_EXISTS:
163                 err = WERR_DS_OBJ_STRING_NAME_EXISTS;
164         break;
165         case LDB_ERR_OBJECT_CLASS_MODS_PROHIBITED:
166                 err = WERR_DS_CANT_MOD_OBJ_CLASS;
167         break;
168         case LDB_ERR_AFFECTS_MULTIPLE_DSAS:
169                 err = WERR_DS_AFFECTS_MULTIPLE_DSAS;
170         break;
171         default:
172                 err = WERR_DS_GENERIC_ERROR;
173         break;
174         }
175
176         *errstring = talloc_asprintf(mem_ctx, "%08X: %s", W_ERROR_V(err),
177                 add_err_string != NULL ? add_err_string : ldb_strerror(ldb_err));
178
179         /* result is 1:1 for now */
180         return ldb_err;
181 }
182
183 /*
184   connect to the sam database
185 */
186 int ldapsrv_backend_Init(struct ldapsrv_connection *conn,
187                               char **errstring)
188 {
189         int ret = samdb_connect_url(conn,
190                                     conn->connection->event.ctx,
191                                     conn->lp_ctx,
192                                     conn->session_info,
193                                     conn->global_catalog ? LDB_FLG_RDONLY : 0,
194                                     "sam.ldb",
195                                     conn->connection->remote_address,
196                                     &conn->ldb,
197                                     errstring);
198         if (ret != LDB_SUCCESS) {
199                 return ret;
200         }
201
202         if (conn->server_credentials) {
203                 struct gensec_security *gensec_security = NULL;
204                 const char **sasl_mechs = NULL;
205                 NTSTATUS status;
206
207                 status = samba_server_gensec_start(conn,
208                                                    conn->connection->event.ctx,
209                                                    conn->connection->msg_ctx,
210                                                    conn->lp_ctx,
211                                                    conn->server_credentials,
212                                                    "ldap",
213                                                    &gensec_security);
214                 if (!NT_STATUS_IS_OK(status)) {
215                         DBG_ERR("samba_server_gensec_start failed: %s\n",
216                                 nt_errstr(status));
217                         return LDB_ERR_OPERATIONS_ERROR;
218                 }
219
220                 /* ldb can have a different lifetime to conn, so we
221                    need to ensure that sasl_mechs lives as long as the
222                    ldb does */
223                 sasl_mechs = gensec_security_sasl_names(gensec_security,
224                                                         conn->ldb);
225                 TALLOC_FREE(gensec_security);
226                 if (sasl_mechs == NULL) {
227                         DBG_ERR("Failed to get sasl mechs!\n");
228                         return LDB_ERR_OPERATIONS_ERROR;
229                 }
230
231                 ldb_set_opaque(conn->ldb, "supportedSASLMechanisms", sasl_mechs);
232         }
233
234         return LDB_SUCCESS;
235 }
236
237 struct ldapsrv_reply *ldapsrv_init_reply(struct ldapsrv_call *call, uint8_t type)
238 {
239         struct ldapsrv_reply *reply;
240
241         reply = talloc_zero(call, struct ldapsrv_reply);
242         if (!reply) {
243                 return NULL;
244         }
245         reply->msg = talloc_zero(reply, struct ldap_message);
246         if (reply->msg == NULL) {
247                 talloc_free(reply);
248                 return NULL;
249         }
250
251         reply->msg->messageid = call->request->messageid;
252         reply->msg->type = type;
253         reply->msg->controls = NULL;
254
255         return reply;
256 }
257
258 /*
259  * Encode a reply to an LDAP client as ASN.1, free the original memory
260  */
261 static NTSTATUS ldapsrv_encode(TALLOC_CTX *mem_ctx,
262                                struct ldapsrv_reply *reply)
263 {
264         bool bret = ldap_encode(reply->msg,
265                                 samba_ldap_control_handlers(),
266                                 &reply->blob,
267                                 mem_ctx);
268         TALLOC_FREE(reply->msg);
269         if (!bret) {
270                 DEBUG(0,("Failed to encode ldap reply of type %d: "
271                          "ldap_encode() failed\n",
272                          reply->msg->type));
273                 return NT_STATUS_NO_MEMORY;
274         }
275
276         talloc_set_name_const(reply->blob.data,
277                               "Outgoing, encoded single LDAP reply");
278
279         return NT_STATUS_OK;
280 }
281
282 /*
283  * Queue a reply (encoding it also), even if it would exceed the
284  * limit.  This allows the error packet with LDAP_SIZE_LIMIT_EXCEEDED
285  * to be sent
286  */
287 static NTSTATUS ldapsrv_queue_reply_forced(struct ldapsrv_call *call,
288                                            struct ldapsrv_reply *reply)
289 {
290         NTSTATUS status = ldapsrv_encode(call, reply);
291
292         if (NT_STATUS_IS_OK(status)) {
293                 DLIST_ADD_END(call->replies, reply);
294         }
295         return status;
296 }
297
298 /*
299  * Queue a reply (encoding it also) but check we do not send more than
300  * LDAP_SERVER_MAX_REPLY_SIZE of responses as a way to limit the
301  * amount of data a client can make us allocate.
302  */
303 NTSTATUS ldapsrv_queue_reply(struct ldapsrv_call *call, struct ldapsrv_reply *reply)
304 {
305         NTSTATUS status = ldapsrv_encode(call, reply);
306
307         if (!NT_STATUS_IS_OK(status)) {
308                 return status;
309         }
310
311         if (call->reply_size > call->reply_size + reply->blob.length
312             || call->reply_size + reply->blob.length > LDAP_SERVER_MAX_REPLY_SIZE) {
313                 DBG_WARNING("Refusing to queue LDAP search response size "
314                             "of more than %zu bytes\n",
315                             LDAP_SERVER_MAX_REPLY_SIZE);
316                 TALLOC_FREE(reply->blob.data);
317                 return NT_STATUS_FILE_TOO_LARGE;
318         }
319
320         call->reply_size += reply->blob.length;
321
322         DLIST_ADD_END(call->replies, reply);
323
324         return status;
325 }
326
327 static NTSTATUS ldapsrv_unwilling(struct ldapsrv_call *call, int error)
328 {
329         struct ldapsrv_reply *reply;
330         struct ldap_ExtendedResponse *r;
331
332         DEBUG(10,("Unwilling type[%d] id[%d]\n", call->request->type, call->request->messageid));
333
334         reply = ldapsrv_init_reply(call, LDAP_TAG_ExtendedResponse);
335         if (!reply) {
336                 return NT_STATUS_NO_MEMORY;
337         }
338
339         r = &reply->msg->r.ExtendedResponse;
340         r->response.resultcode = error;
341         r->response.dn = NULL;
342         r->response.errormessage = NULL;
343         r->response.referral = NULL;
344         r->oid = NULL;
345         r->value = NULL;
346
347         ldapsrv_queue_reply(call, reply);
348         return NT_STATUS_OK;
349 }
350
351 static int ldapsrv_add_with_controls(struct ldapsrv_call *call,
352                                      const struct ldb_message *message,
353                                      struct ldb_control **controls,
354                                      struct ldb_result *res)
355 {
356         struct ldb_context *ldb = call->conn->ldb;
357         struct ldb_request *req;
358         int ret;
359
360         ret = ldb_msg_sanity_check(ldb, message);
361         if (ret != LDB_SUCCESS) {
362                 return ret;
363         }
364
365         ret = ldb_build_add_req(&req, ldb, ldb,
366                                         message,
367                                         controls,
368                                         res,
369                                         ldb_modify_default_callback,
370                                         NULL);
371
372         if (ret != LDB_SUCCESS) return ret;
373
374         if (call->conn->global_catalog) {
375                 return ldb_error(ldb, LDB_ERR_UNWILLING_TO_PERFORM, "modify forbidden on global catalog port");
376         }
377         ldb_request_add_control(req, DSDB_CONTROL_NO_GLOBAL_CATALOG, false, NULL);
378
379         ret = ldb_transaction_start(ldb);
380         if (ret != LDB_SUCCESS) {
381                 return ret;
382         }
383
384         if (!call->conn->is_privileged) {
385                 ldb_req_mark_untrusted(req);
386         }
387
388         LDB_REQ_SET_LOCATION(req);
389
390         ret = ldb_request(ldb, req);
391         if (ret == LDB_SUCCESS) {
392                 ret = ldb_wait(req->handle, LDB_WAIT_ALL);
393         }
394
395         if (ret == LDB_SUCCESS) {
396                 ret = ldb_transaction_commit(ldb);
397         }
398         else {
399                 ldb_transaction_cancel(ldb);
400         }
401
402         talloc_free(req);
403         return ret;
404 }
405
406 /* create and execute a modify request */
407 static int ldapsrv_mod_with_controls(struct ldapsrv_call *call,
408                                      const struct ldb_message *message,
409                                      struct ldb_control **controls,
410                                      struct ldb_result *res)
411 {
412         struct ldb_context *ldb = call->conn->ldb;
413         struct ldb_request *req;
414         int ret;
415
416         ret = ldb_msg_sanity_check(ldb, message);
417         if (ret != LDB_SUCCESS) {
418                 return ret;
419         }
420
421         ret = ldb_build_mod_req(&req, ldb, ldb,
422                                         message,
423                                         controls,
424                                         res,
425                                         ldb_modify_default_callback,
426                                         NULL);
427
428         if (ret != LDB_SUCCESS) {
429                 return ret;
430         }
431
432         if (call->conn->global_catalog) {
433                 return ldb_error(ldb, LDB_ERR_UNWILLING_TO_PERFORM, "modify forbidden on global catalog port");
434         }
435         ldb_request_add_control(req, DSDB_CONTROL_NO_GLOBAL_CATALOG, false, NULL);
436
437         ret = ldb_transaction_start(ldb);
438         if (ret != LDB_SUCCESS) {
439                 return ret;
440         }
441
442         if (!call->conn->is_privileged) {
443                 ldb_req_mark_untrusted(req);
444         }
445
446         LDB_REQ_SET_LOCATION(req);
447
448         ret = ldb_request(ldb, req);
449         if (ret == LDB_SUCCESS) {
450                 ret = ldb_wait(req->handle, LDB_WAIT_ALL);
451         }
452
453         if (ret == LDB_SUCCESS) {
454                 ret = ldb_transaction_commit(ldb);
455         }
456         else {
457                 ldb_transaction_cancel(ldb);
458         }
459
460         talloc_free(req);
461         return ret;
462 }
463
464 /* create and execute a delete request */
465 static int ldapsrv_del_with_controls(struct ldapsrv_call *call,
466                                      struct ldb_dn *dn,
467                                      struct ldb_control **controls,
468                                      struct ldb_result *res)
469 {
470         struct ldb_context *ldb = call->conn->ldb;
471         struct ldb_request *req;
472         int ret;
473
474         ret = ldb_build_del_req(&req, ldb, ldb,
475                                         dn,
476                                         controls,
477                                         res,
478                                         ldb_modify_default_callback,
479                                         NULL);
480
481         if (ret != LDB_SUCCESS) return ret;
482
483         if (call->conn->global_catalog) {
484                 return ldb_error(ldb, LDB_ERR_UNWILLING_TO_PERFORM, "modify forbidden on global catalog port");
485         }
486         ldb_request_add_control(req, DSDB_CONTROL_NO_GLOBAL_CATALOG, false, NULL);
487
488         ret = ldb_transaction_start(ldb);
489         if (ret != LDB_SUCCESS) {
490                 return ret;
491         }
492
493         if (!call->conn->is_privileged) {
494                 ldb_req_mark_untrusted(req);
495         }
496
497         LDB_REQ_SET_LOCATION(req);
498
499         ret = ldb_request(ldb, req);
500         if (ret == LDB_SUCCESS) {
501                 ret = ldb_wait(req->handle, LDB_WAIT_ALL);
502         }
503
504         if (ret == LDB_SUCCESS) {
505                 ret = ldb_transaction_commit(ldb);
506         }
507         else {
508                 ldb_transaction_cancel(ldb);
509         }
510
511         talloc_free(req);
512         return ret;
513 }
514
515 static int ldapsrv_rename_with_controls(struct ldapsrv_call *call,
516                                         struct ldb_dn *olddn,
517                                         struct ldb_dn *newdn,
518                                         struct ldb_control **controls,
519                                         struct ldb_result *res)
520 {
521         struct ldb_context *ldb = call->conn->ldb;
522         struct ldb_request *req;
523         int ret;
524
525         ret = ldb_build_rename_req(&req, ldb, ldb,
526                                         olddn,
527                                         newdn,
528                                         controls,
529                                         res,
530                                         ldb_modify_default_callback,
531                                         NULL);
532
533         if (ret != LDB_SUCCESS) return ret;
534
535         if (call->conn->global_catalog) {
536                 return ldb_error(ldb, LDB_ERR_UNWILLING_TO_PERFORM, "modify forbidden on global catalog port");
537         }
538         ldb_request_add_control(req, DSDB_CONTROL_NO_GLOBAL_CATALOG, false, NULL);
539
540         ret = ldb_transaction_start(ldb);
541         if (ret != LDB_SUCCESS) {
542                 return ret;
543         }
544
545         if (!call->conn->is_privileged) {
546                 ldb_req_mark_untrusted(req);
547         }
548
549         LDB_REQ_SET_LOCATION(req);
550
551         ret = ldb_request(ldb, req);
552         if (ret == LDB_SUCCESS) {
553                 ret = ldb_wait(req->handle, LDB_WAIT_ALL);
554         }
555
556         if (ret == LDB_SUCCESS) {
557                 ret = ldb_transaction_commit(ldb);
558         }
559         else {
560                 ldb_transaction_cancel(ldb);
561         }
562
563         talloc_free(req);
564         return ret;
565 }
566
567
568
569 struct ldapsrv_context {
570         struct ldapsrv_call *call;
571         int extended_type;
572         bool attributesonly;
573         struct ldb_control **controls;
574         size_t count; /* For notificaiton only */
575 };
576
577 static int ldap_server_search_callback(struct ldb_request *req, struct ldb_reply *ares)
578 {
579         struct ldapsrv_context *ctx = talloc_get_type(req->context, struct ldapsrv_context);
580         struct ldapsrv_call *call = ctx->call;
581         struct ldb_context *ldb = call->conn->ldb;
582         unsigned int j;
583         struct ldapsrv_reply *ent_r = NULL;
584         struct ldap_SearchResEntry *ent;
585         int ret;
586         NTSTATUS status;
587
588         if (!ares) {
589                 return ldb_request_done(req, LDB_ERR_OPERATIONS_ERROR);
590         }
591         if (ares->error != LDB_SUCCESS) {
592                 return ldb_request_done(req, ares->error);
593         }
594
595         switch (ares->type) {
596         case LDB_REPLY_ENTRY:
597         {
598                 struct ldb_message *msg = ares->message;
599                 ent_r = ldapsrv_init_reply(call, LDAP_TAG_SearchResultEntry);
600                 if (ent_r == NULL) {
601                         return ldb_oom(ldb);
602                 }
603
604                 ctx->count++;
605
606                 /*
607                  * Put the LDAP search response data under ent_r->msg
608                  * so we can free that later once encoded
609                  */
610                 talloc_steal(ent_r->msg, msg);
611
612                 ent = &ent_r->msg->r.SearchResultEntry;
613                 ent->dn = ldb_dn_get_extended_linearized(ent_r, msg->dn,
614                                                          ctx->extended_type);
615                 ent->num_attributes = 0;
616                 ent->attributes = NULL;
617                 if (msg->num_elements == 0) {
618                         goto queue_reply;
619                 }
620                 ent->num_attributes = msg->num_elements;
621                 ent->attributes = talloc_array(ent_r, struct ldb_message_element, ent->num_attributes);
622                 if (ent->attributes == NULL) {
623                         return ldb_oom(ldb);
624                 }
625
626                 for (j=0; j < ent->num_attributes; j++) {
627                         ent->attributes[j].name = msg->elements[j].name;
628                         ent->attributes[j].num_values = 0;
629                         ent->attributes[j].values = NULL;
630                         if (ctx->attributesonly && (msg->elements[j].num_values == 0)) {
631                                 continue;
632                         }
633                         ent->attributes[j].num_values = msg->elements[j].num_values;
634                         ent->attributes[j].values = msg->elements[j].values;
635                 }
636 queue_reply:
637                 status = ldapsrv_queue_reply(call, ent_r);
638                 if (NT_STATUS_EQUAL(status, NT_STATUS_FILE_TOO_LARGE)) {
639                         ret = ldb_request_done(req,
640                                                LDB_ERR_SIZE_LIMIT_EXCEEDED);
641                         ldb_asprintf_errstring(ldb,
642                                                "LDAP search response size "
643                                                "limited to %zu bytes\n",
644                                                LDAP_SERVER_MAX_REPLY_SIZE);
645                 } else if (!NT_STATUS_IS_OK(status)) {
646                         ret = ldb_request_done(req,
647                                                ldb_operr(ldb));
648                 } else {
649                         ret = LDB_SUCCESS;
650                 }
651                 break;
652         }
653         case LDB_REPLY_REFERRAL:
654         {
655                 struct ldap_SearchResRef *ent_ref;
656
657                 /*
658                  * TODO: This should be handled by the notification
659                  * module not here
660                  */
661                 if (call->notification.busy) {
662                         ret = LDB_SUCCESS;
663                         break;
664                 }
665
666                 ent_r = ldapsrv_init_reply(call, LDAP_TAG_SearchResultReference);
667                 if (ent_r == NULL) {
668                         return ldb_oom(ldb);
669                 }
670
671                 /*
672                  * Put the LDAP referral data under ent_r->msg
673                  * so we can free that later once encoded
674                  */
675                 talloc_steal(ent_r->msg, ares->referral);
676
677                 ent_ref = &ent_r->msg->r.SearchResultReference;
678                 ent_ref->referral = ares->referral;
679
680                 status = ldapsrv_queue_reply(call, ent_r);
681                 if (!NT_STATUS_IS_OK(status)) {
682                         ret = LDB_ERR_OPERATIONS_ERROR;
683                 } else {
684                         ret = LDB_SUCCESS;
685                 }
686                 break;
687         }
688         case LDB_REPLY_DONE:
689         {
690                 /*
691                  * We don't queue the reply for this one, we let that
692                  * happen outside
693                  */
694                 ctx->controls = talloc_move(ctx, &ares->controls);
695
696                 TALLOC_FREE(ares);
697                 return ldb_request_done(req, LDB_SUCCESS);
698         }
699         default:
700                 /* Doesn't happen */
701                 ret = LDB_ERR_OPERATIONS_ERROR;
702         }
703         TALLOC_FREE(ares);
704
705         return ret;
706 }
707
708
709 static NTSTATUS ldapsrv_SearchRequest(struct ldapsrv_call *call)
710 {
711         struct ldap_SearchRequest *req = &call->request->r.SearchRequest;
712         struct ldap_Result *done;
713         struct ldapsrv_reply *done_r;
714         TALLOC_CTX *local_ctx;
715         struct ldapsrv_context *callback_ctx = NULL;
716         struct ldb_context *samdb = talloc_get_type(call->conn->ldb, struct ldb_context);
717         struct ldb_dn *basedn;
718         struct ldb_request *lreq;
719         struct ldb_control *search_control;
720         struct ldb_search_options_control *search_options;
721         struct ldb_control *extended_dn_control;
722         struct ldb_extended_dn_control *extended_dn_decoded = NULL;
723         struct ldb_control *notification_control = NULL;
724         enum ldb_scope scope = LDB_SCOPE_DEFAULT;
725         const char **attrs = NULL;
726         const char *scope_str, *errstr = NULL;
727         int result = -1;
728         int ldb_ret = -1;
729         unsigned int i;
730         int extended_type = 1;
731
732
733         local_ctx = talloc_new(call);
734         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
735
736         basedn = ldb_dn_new(local_ctx, samdb, req->basedn);
737         NT_STATUS_HAVE_NO_MEMORY(basedn);
738
739         DEBUG(10, ("SearchRequest: basedn: [%s]\n", req->basedn));
740         DEBUG(10, ("SearchRequest: filter: [%s]\n", ldb_filter_from_tree(call, req->tree)));
741
742         switch (req->scope) {
743                 case LDAP_SEARCH_SCOPE_BASE:
744                         scope_str = "BASE";
745                         scope = LDB_SCOPE_BASE;
746                         break;
747                 case LDAP_SEARCH_SCOPE_SINGLE:
748                         scope_str = "ONE";
749                         scope = LDB_SCOPE_ONELEVEL;
750                         break;
751                 case LDAP_SEARCH_SCOPE_SUB:
752                         scope_str = "SUB";
753                         scope = LDB_SCOPE_SUBTREE;
754                         break;
755                 default:
756                         result = LDAP_PROTOCOL_ERROR;
757                         map_ldb_error(local_ctx, LDB_ERR_PROTOCOL_ERROR, NULL,
758                                 &errstr);
759                         errstr = talloc_asprintf(local_ctx,
760                                 "%s. Invalid scope", errstr);
761                         goto reply;
762         }
763         DEBUG(10,("SearchRequest: scope: [%s]\n", scope_str));
764
765         if (req->num_attributes >= 1) {
766                 attrs = talloc_array(local_ctx, const char *, req->num_attributes+1);
767                 NT_STATUS_HAVE_NO_MEMORY(attrs);
768
769                 for (i=0; i < req->num_attributes; i++) {
770                         DEBUG(10,("SearchRequest: attrs: [%s]\n",req->attributes[i]));
771                         attrs[i] = req->attributes[i];
772                 }
773                 attrs[i] = NULL;
774         }
775
776         DEBUG(5,("ldb_request %s dn=%s filter=%s\n", 
777                  scope_str, req->basedn, ldb_filter_from_tree(call, req->tree)));
778
779         callback_ctx = talloc_zero(local_ctx, struct ldapsrv_context);
780         NT_STATUS_HAVE_NO_MEMORY(callback_ctx);
781         callback_ctx->call = call;
782         callback_ctx->extended_type = extended_type;
783         callback_ctx->attributesonly = req->attributesonly;
784
785         ldb_ret = ldb_build_search_req_ex(&lreq, samdb, local_ctx,
786                                           basedn, scope,
787                                           req->tree, attrs,
788                                           call->request->controls,
789                                           callback_ctx,
790                                           ldap_server_search_callback,
791                                           NULL);
792
793         if (ldb_ret != LDB_SUCCESS) {
794                 goto reply;
795         }
796
797         if (call->conn->global_catalog) {
798                 search_control = ldb_request_get_control(lreq, LDB_CONTROL_SEARCH_OPTIONS_OID);
799
800                 search_options = NULL;
801                 if (search_control) {
802                         search_options = talloc_get_type(search_control->data, struct ldb_search_options_control);
803                         search_options->search_options |= LDB_SEARCH_OPTION_PHANTOM_ROOT;
804                 } else {
805                         search_options = talloc(lreq, struct ldb_search_options_control);
806                         NT_STATUS_HAVE_NO_MEMORY(search_options);
807                         search_options->search_options = LDB_SEARCH_OPTION_PHANTOM_ROOT;
808                         ldb_request_add_control(lreq, LDB_CONTROL_SEARCH_OPTIONS_OID, false, search_options);
809                 }
810         } else {
811                 ldb_request_add_control(lreq, DSDB_CONTROL_NO_GLOBAL_CATALOG, false, NULL);
812         }
813
814         extended_dn_control = ldb_request_get_control(lreq, LDB_CONTROL_EXTENDED_DN_OID);
815
816         if (extended_dn_control) {
817                 if (extended_dn_control->data) {
818                         extended_dn_decoded = talloc_get_type(extended_dn_control->data, struct ldb_extended_dn_control);
819                         extended_type = extended_dn_decoded->type;
820                 } else {
821                         extended_type = 0;
822                 }
823                 callback_ctx->extended_type = extended_type;
824         }
825
826         notification_control = ldb_request_get_control(lreq, LDB_CONTROL_NOTIFICATION_OID);
827         if (notification_control != NULL) {
828                 const struct ldapsrv_call *pc = NULL;
829                 size_t count = 0;
830
831                 for (pc = call->conn->pending_calls; pc != NULL; pc = pc->next) {
832                         count += 1;
833                 }
834
835                 if (count >= call->conn->limits.max_notifications) {
836                         DEBUG(10,("SearchRequest: error MaxNotificationPerConn\n"));
837                         result = map_ldb_error(local_ctx,
838                                                LDB_ERR_ADMIN_LIMIT_EXCEEDED,
839                                                "MaxNotificationPerConn reached",
840                                                &errstr);
841                         goto reply;
842                 }
843
844                 /*
845                  * For now we need to do periodic retries on our own.
846                  * As the dsdb_notification module will return after each run.
847                  */
848                 call->notification.busy = true;
849         }
850
851         {
852                 const char *scheme = NULL;
853                 switch (call->conn->referral_scheme) {
854                 case LDAP_REFERRAL_SCHEME_LDAPS:
855                         scheme = "ldaps";
856                         break;
857                 default:
858                         scheme = "ldap";
859                 }
860                 ldb_ret = ldb_set_opaque(
861                         samdb,
862                         LDAP_REFERRAL_SCHEME_OPAQUE,
863                         discard_const_p(char *, scheme));
864                 if (ldb_ret != LDB_SUCCESS) {
865                         goto reply;
866                 }
867         }
868
869         {
870                 time_t timeout = call->conn->limits.search_timeout;
871
872                 if (timeout == 0
873                     || (req->timelimit != 0
874                         && req->timelimit < timeout))
875                 {
876                         timeout = req->timelimit;
877                 }
878                 ldb_set_timeout(samdb, lreq, timeout);
879         }
880
881         if (!call->conn->is_privileged) {
882                 ldb_req_mark_untrusted(lreq);
883         }
884
885         LDB_REQ_SET_LOCATION(lreq);
886
887         ldb_ret = ldb_request(samdb, lreq);
888
889         if (ldb_ret != LDB_SUCCESS) {
890                 goto reply;
891         }
892
893         ldb_ret = ldb_wait(lreq->handle, LDB_WAIT_ALL);
894
895         if (ldb_ret == LDB_SUCCESS) {
896                 if (call->notification.busy) {
897                         /* Move/Add it to the end */
898                         DLIST_DEMOTE(call->conn->pending_calls, call);
899                         call->notification.generation =
900                                 call->conn->service->notification.generation;
901
902                         if (callback_ctx->count != 0) {
903                                 call->notification.generation += 1;
904                                 ldapsrv_notification_retry_setup(call->conn->service,
905                                                                  true);
906                         }
907
908                         talloc_free(local_ctx);
909                         return NT_STATUS_OK;
910                 }
911         }
912
913 reply:
914         DLIST_REMOVE(call->conn->pending_calls, call);
915         call->notification.busy = false;
916
917         done_r = ldapsrv_init_reply(call, LDAP_TAG_SearchResultDone);
918         NT_STATUS_HAVE_NO_MEMORY(done_r);
919
920         done = &done_r->msg->r.SearchResultDone;
921         done->dn = NULL;
922         done->referral = NULL;
923
924         if (result != -1) {
925         } else if (ldb_ret == LDB_SUCCESS) {
926                 if (callback_ctx->controls) {
927                         done_r->msg->controls = callback_ctx->controls;
928                         talloc_steal(done_r->msg, callback_ctx->controls);
929                 }
930                 result = LDB_SUCCESS;
931         } else {
932                 DEBUG(10,("SearchRequest: error\n"));
933                 result = map_ldb_error(local_ctx, ldb_ret, ldb_errstring(samdb),
934                                        &errstr);
935         }
936
937         done->resultcode = result;
938         done->errormessage = (errstr?talloc_strdup(done_r, errstr):NULL);
939
940         talloc_free(local_ctx);
941
942         return ldapsrv_queue_reply_forced(call, done_r);
943 }
944
945 static NTSTATUS ldapsrv_ModifyRequest(struct ldapsrv_call *call)
946 {
947         struct ldap_ModifyRequest *req = &call->request->r.ModifyRequest;
948         struct ldap_Result *modify_result;
949         struct ldapsrv_reply *modify_reply;
950         TALLOC_CTX *local_ctx;
951         struct ldb_context *samdb = call->conn->ldb;
952         struct ldb_message *msg = NULL;
953         struct ldb_dn *dn;
954         const char *errstr = NULL;
955         int result = LDAP_SUCCESS;
956         int ldb_ret;
957         unsigned int i,j;
958         struct ldb_result *res = NULL;
959
960         DEBUG(10, ("ModifyRequest"));
961         DEBUGADD(10, (" dn: %s\n", req->dn));
962
963         local_ctx = talloc_named(call, 0, "ModifyRequest local memory context");
964         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
965
966         dn = ldb_dn_new(local_ctx, samdb, req->dn);
967         NT_STATUS_HAVE_NO_MEMORY(dn);
968
969         DEBUG(10, ("ModifyRequest: dn: [%s]\n", req->dn));
970
971         msg = ldb_msg_new(local_ctx);
972         NT_STATUS_HAVE_NO_MEMORY(msg);
973
974         msg->dn = dn;
975
976         if (req->num_mods > 0) {
977                 msg->num_elements = req->num_mods;
978                 msg->elements = talloc_array(msg, struct ldb_message_element, req->num_mods);
979                 NT_STATUS_HAVE_NO_MEMORY(msg->elements);
980
981                 for (i=0; i < msg->num_elements; i++) {
982                         msg->elements[i].name = discard_const_p(char, req->mods[i].attrib.name);
983                         msg->elements[i].num_values = 0;
984                         msg->elements[i].values = NULL;
985
986                         switch (req->mods[i].type) {
987                         default:
988                                 result = LDAP_PROTOCOL_ERROR;
989                                 map_ldb_error(local_ctx,
990                                         LDB_ERR_PROTOCOL_ERROR, NULL, &errstr);
991                                 errstr = talloc_asprintf(local_ctx,
992                                         "%s. Invalid LDAP_MODIFY_* type", errstr);
993                                 goto reply;
994                         case LDAP_MODIFY_ADD:
995                                 msg->elements[i].flags = LDB_FLAG_MOD_ADD;
996                                 break;
997                         case LDAP_MODIFY_DELETE:
998                                 msg->elements[i].flags = LDB_FLAG_MOD_DELETE;
999                                 break;
1000                         case LDAP_MODIFY_REPLACE:
1001                                 msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
1002                                 break;
1003                         }
1004
1005                         msg->elements[i].num_values = req->mods[i].attrib.num_values;
1006                         if (msg->elements[i].num_values > 0) {
1007                                 msg->elements[i].values = talloc_array(msg->elements, struct ldb_val,
1008                                                                        msg->elements[i].num_values);
1009                                 NT_STATUS_HAVE_NO_MEMORY(msg->elements[i].values);
1010
1011                                 for (j=0; j < msg->elements[i].num_values; j++) {
1012                                         msg->elements[i].values[j].length = req->mods[i].attrib.values[j].length;
1013                                         msg->elements[i].values[j].data = req->mods[i].attrib.values[j].data;                   
1014                                 }
1015                         }
1016                 }
1017         }
1018
1019 reply:
1020         modify_reply = ldapsrv_init_reply(call, LDAP_TAG_ModifyResponse);
1021         NT_STATUS_HAVE_NO_MEMORY(modify_reply);
1022
1023         if (result == LDAP_SUCCESS) {
1024                 res = talloc_zero(local_ctx, struct ldb_result);
1025                 NT_STATUS_HAVE_NO_MEMORY(res);
1026                 ldb_ret = ldapsrv_mod_with_controls(call, msg, call->request->controls, res);
1027                 result = map_ldb_error(local_ctx, ldb_ret, ldb_errstring(samdb),
1028                                        &errstr);
1029         }
1030
1031         modify_result = &modify_reply->msg->r.ModifyResponse;
1032         modify_result->dn = NULL;
1033         if ((res != NULL) && (res->refs != NULL)) {
1034                 modify_result->resultcode = map_ldb_error(local_ctx,
1035                                                           LDB_ERR_REFERRAL,
1036                                                           NULL, &errstr);
1037                 modify_result->errormessage = (errstr?talloc_strdup(modify_reply, errstr):NULL);
1038                 modify_result->referral = talloc_strdup(call, *res->refs);
1039         } else {
1040                 modify_result->resultcode = result;
1041                 modify_result->errormessage = (errstr?talloc_strdup(modify_reply, errstr):NULL);
1042                 modify_result->referral = NULL;
1043         }
1044         talloc_free(local_ctx);
1045
1046         return ldapsrv_queue_reply(call, modify_reply);
1047
1048 }
1049
1050 static NTSTATUS ldapsrv_AddRequest(struct ldapsrv_call *call)
1051 {
1052         struct ldap_AddRequest *req = &call->request->r.AddRequest;
1053         struct ldap_Result *add_result;
1054         struct ldapsrv_reply *add_reply;
1055         TALLOC_CTX *local_ctx;
1056         struct ldb_context *samdb = call->conn->ldb;
1057         struct ldb_message *msg = NULL;
1058         struct ldb_dn *dn;
1059         const char *errstr = NULL;
1060         int result = LDAP_SUCCESS;
1061         int ldb_ret;
1062         unsigned int i,j;
1063         struct ldb_result *res = NULL;
1064
1065         DEBUG(10, ("AddRequest"));
1066         DEBUGADD(10, (" dn: %s\n", req->dn));
1067
1068         local_ctx = talloc_named(call, 0, "AddRequest local memory context");
1069         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
1070
1071         dn = ldb_dn_new(local_ctx, samdb, req->dn);
1072         NT_STATUS_HAVE_NO_MEMORY(dn);
1073
1074         DEBUG(10, ("AddRequest: dn: [%s]\n", req->dn));
1075
1076         msg = talloc(local_ctx, struct ldb_message);
1077         NT_STATUS_HAVE_NO_MEMORY(msg);
1078
1079         msg->dn = dn;
1080         msg->num_elements = 0;
1081         msg->elements = NULL;
1082
1083         if (req->num_attributes > 0) {
1084                 msg->num_elements = req->num_attributes;
1085                 msg->elements = talloc_array(msg, struct ldb_message_element, msg->num_elements);
1086                 NT_STATUS_HAVE_NO_MEMORY(msg->elements);
1087
1088                 for (i=0; i < msg->num_elements; i++) {
1089                         msg->elements[i].name = discard_const_p(char, req->attributes[i].name);
1090                         msg->elements[i].flags = 0;
1091                         msg->elements[i].num_values = 0;
1092                         msg->elements[i].values = NULL;
1093                         
1094                         if (req->attributes[i].num_values > 0) {
1095                                 msg->elements[i].num_values = req->attributes[i].num_values;
1096                                 msg->elements[i].values = talloc_array(msg->elements, struct ldb_val,
1097                                                                        msg->elements[i].num_values);
1098                                 NT_STATUS_HAVE_NO_MEMORY(msg->elements[i].values);
1099
1100                                 for (j=0; j < msg->elements[i].num_values; j++) {
1101                                         msg->elements[i].values[j].length = req->attributes[i].values[j].length;
1102                                         msg->elements[i].values[j].data = req->attributes[i].values[j].data;                    
1103                                 }
1104                         }
1105                 }
1106         }
1107
1108         add_reply = ldapsrv_init_reply(call, LDAP_TAG_AddResponse);
1109         NT_STATUS_HAVE_NO_MEMORY(add_reply);
1110
1111         if (result == LDAP_SUCCESS) {
1112                 res = talloc_zero(local_ctx, struct ldb_result);
1113                 NT_STATUS_HAVE_NO_MEMORY(res);
1114                 ldb_ret = ldapsrv_add_with_controls(call, msg, call->request->controls, res);
1115                 result = map_ldb_error(local_ctx, ldb_ret, ldb_errstring(samdb),
1116                                        &errstr);
1117         }
1118
1119         add_result = &add_reply->msg->r.AddResponse;
1120         add_result->dn = NULL;
1121         if ((res != NULL) && (res->refs != NULL)) {
1122                 add_result->resultcode =  map_ldb_error(local_ctx,
1123                                                         LDB_ERR_REFERRAL, NULL,
1124                                                         &errstr);
1125                 add_result->errormessage = (errstr?talloc_strdup(add_reply,errstr):NULL);
1126                 add_result->referral = talloc_strdup(call, *res->refs);
1127         } else {
1128                 add_result->resultcode = result;
1129                 add_result->errormessage = (errstr?talloc_strdup(add_reply,errstr):NULL);
1130                 add_result->referral = NULL;
1131         }
1132         talloc_free(local_ctx);
1133
1134         return ldapsrv_queue_reply(call, add_reply);
1135
1136 }
1137
1138 static NTSTATUS ldapsrv_DelRequest(struct ldapsrv_call *call)
1139 {
1140         struct ldap_DelRequest *req = &call->request->r.DelRequest;
1141         struct ldap_Result *del_result;
1142         struct ldapsrv_reply *del_reply;
1143         TALLOC_CTX *local_ctx;
1144         struct ldb_context *samdb = call->conn->ldb;
1145         struct ldb_dn *dn;
1146         const char *errstr = NULL;
1147         int result = LDAP_SUCCESS;
1148         int ldb_ret;
1149         struct ldb_result *res = NULL;
1150
1151         DEBUG(10, ("DelRequest"));
1152         DEBUGADD(10, (" dn: %s\n", req->dn));
1153
1154         local_ctx = talloc_named(call, 0, "DelRequest local memory context");
1155         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
1156
1157         dn = ldb_dn_new(local_ctx, samdb, req->dn);
1158         NT_STATUS_HAVE_NO_MEMORY(dn);
1159
1160         DEBUG(10, ("DelRequest: dn: [%s]\n", req->dn));
1161
1162         del_reply = ldapsrv_init_reply(call, LDAP_TAG_DelResponse);
1163         NT_STATUS_HAVE_NO_MEMORY(del_reply);
1164
1165         if (result == LDAP_SUCCESS) {
1166                 res = talloc_zero(local_ctx, struct ldb_result);
1167                 NT_STATUS_HAVE_NO_MEMORY(res);
1168                 ldb_ret = ldapsrv_del_with_controls(call, dn, call->request->controls, res);
1169                 result = map_ldb_error(local_ctx, ldb_ret, ldb_errstring(samdb),
1170                                        &errstr);
1171         }
1172
1173         del_result = &del_reply->msg->r.DelResponse;
1174         del_result->dn = NULL;
1175         if ((res != NULL) && (res->refs != NULL)) {
1176                 del_result->resultcode = map_ldb_error(local_ctx,
1177                                                        LDB_ERR_REFERRAL, NULL,
1178                                                        &errstr);
1179                 del_result->errormessage = (errstr?talloc_strdup(del_reply,errstr):NULL);
1180                 del_result->referral = talloc_strdup(call, *res->refs);
1181         } else {
1182                 del_result->resultcode = result;
1183                 del_result->errormessage = (errstr?talloc_strdup(del_reply,errstr):NULL);
1184                 del_result->referral = NULL;
1185         }
1186
1187         talloc_free(local_ctx);
1188
1189         return ldapsrv_queue_reply(call, del_reply);
1190 }
1191
1192 static NTSTATUS ldapsrv_ModifyDNRequest(struct ldapsrv_call *call)
1193 {
1194         struct ldap_ModifyDNRequest *req = &call->request->r.ModifyDNRequest;
1195         struct ldap_Result *modifydn;
1196         struct ldapsrv_reply *modifydn_r;
1197         TALLOC_CTX *local_ctx;
1198         struct ldb_context *samdb = call->conn->ldb;
1199         struct ldb_dn *olddn, *newdn=NULL, *newrdn;
1200         struct ldb_dn *parentdn = NULL;
1201         const char *errstr = NULL;
1202         int result = LDAP_SUCCESS;
1203         int ldb_ret;
1204         struct ldb_result *res = NULL;
1205
1206         DEBUG(10, ("ModifyDNRequest"));
1207         DEBUGADD(10, (" dn: %s", req->dn));
1208         DEBUGADD(10, (" newrdn: %s\n", req->newrdn));
1209
1210         local_ctx = talloc_named(call, 0, "ModifyDNRequest local memory context");
1211         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
1212
1213         olddn = ldb_dn_new(local_ctx, samdb, req->dn);
1214         NT_STATUS_HAVE_NO_MEMORY(olddn);
1215
1216         newrdn = ldb_dn_new(local_ctx, samdb, req->newrdn);
1217         NT_STATUS_HAVE_NO_MEMORY(newrdn);
1218
1219         DEBUG(10, ("ModifyDNRequest: olddn: [%s]\n", req->dn));
1220         DEBUG(10, ("ModifyDNRequest: newrdn: [%s]\n", req->newrdn));
1221
1222         if (ldb_dn_get_comp_num(newrdn) == 0) {
1223                 result = LDAP_PROTOCOL_ERROR;
1224                 map_ldb_error(local_ctx, LDB_ERR_PROTOCOL_ERROR, NULL,
1225                               &errstr);
1226                 goto reply;
1227         }
1228
1229         if (ldb_dn_get_comp_num(newrdn) > 1) {
1230                 result = LDAP_NAMING_VIOLATION;
1231                 map_ldb_error(local_ctx, LDB_ERR_NAMING_VIOLATION, NULL,
1232                               &errstr);
1233                 goto reply;
1234         }
1235
1236         /* we can't handle the rename if we should not remove the old dn */
1237         if (!req->deleteolddn) {
1238                 result = LDAP_UNWILLING_TO_PERFORM;
1239                 map_ldb_error(local_ctx, LDB_ERR_UNWILLING_TO_PERFORM, NULL,
1240                               &errstr);
1241                 errstr = talloc_asprintf(local_ctx,
1242                         "%s. Old RDN must be deleted", errstr);
1243                 goto reply;
1244         }
1245
1246         if (req->newsuperior) {
1247                 DEBUG(10, ("ModifyDNRequest: newsuperior: [%s]\n", req->newsuperior));
1248                 parentdn = ldb_dn_new(local_ctx, samdb, req->newsuperior);
1249         }
1250
1251         if (!parentdn) {
1252                 parentdn = ldb_dn_get_parent(local_ctx, olddn);
1253         }
1254         if (!parentdn) {
1255                 result = LDAP_NO_SUCH_OBJECT;
1256                 map_ldb_error(local_ctx, LDB_ERR_NO_SUCH_OBJECT, NULL, &errstr);
1257                 goto reply;
1258         }
1259
1260         if ( ! ldb_dn_add_child(parentdn, newrdn)) {
1261                 result = LDAP_OTHER;
1262                 map_ldb_error(local_ctx, LDB_ERR_OTHER, NULL, &errstr);
1263                 goto reply;
1264         }
1265         newdn = parentdn;
1266
1267 reply:
1268         modifydn_r = ldapsrv_init_reply(call, LDAP_TAG_ModifyDNResponse);
1269         NT_STATUS_HAVE_NO_MEMORY(modifydn_r);
1270
1271         if (result == LDAP_SUCCESS) {
1272                 res = talloc_zero(local_ctx, struct ldb_result);
1273                 NT_STATUS_HAVE_NO_MEMORY(res);
1274                 ldb_ret = ldapsrv_rename_with_controls(call, olddn, newdn, call->request->controls, res);
1275                 result = map_ldb_error(local_ctx, ldb_ret, ldb_errstring(samdb),
1276                                        &errstr);
1277         }
1278
1279         modifydn = &modifydn_r->msg->r.ModifyDNResponse;
1280         modifydn->dn = NULL;
1281         if ((res != NULL) && (res->refs != NULL)) {
1282                 modifydn->resultcode = map_ldb_error(local_ctx,
1283                                                      LDB_ERR_REFERRAL, NULL,
1284                                                      &errstr);;
1285                 modifydn->errormessage = (errstr?talloc_strdup(modifydn_r,errstr):NULL);
1286                 modifydn->referral = talloc_strdup(call, *res->refs);
1287         } else {
1288                 modifydn->resultcode = result;
1289                 modifydn->errormessage = (errstr?talloc_strdup(modifydn_r,errstr):NULL);
1290                 modifydn->referral = NULL;
1291         }
1292
1293         talloc_free(local_ctx);
1294
1295         return ldapsrv_queue_reply(call, modifydn_r);
1296 }
1297
1298 static NTSTATUS ldapsrv_CompareRequest(struct ldapsrv_call *call)
1299 {
1300         struct ldap_CompareRequest *req = &call->request->r.CompareRequest;
1301         struct ldap_Result *compare;
1302         struct ldapsrv_reply *compare_r;
1303         TALLOC_CTX *local_ctx;
1304         struct ldb_context *samdb = call->conn->ldb;
1305         struct ldb_result *res = NULL;
1306         struct ldb_dn *dn;
1307         const char *attrs[1];
1308         const char *errstr = NULL;
1309         const char *filter = NULL;
1310         int result = LDAP_SUCCESS;
1311         int ldb_ret;
1312
1313         DEBUG(10, ("CompareRequest"));
1314         DEBUGADD(10, (" dn: %s\n", req->dn));
1315
1316         local_ctx = talloc_named(call, 0, "CompareRequest local_memory_context");
1317         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
1318
1319         dn = ldb_dn_new(local_ctx, samdb, req->dn);
1320         NT_STATUS_HAVE_NO_MEMORY(dn);
1321
1322         DEBUG(10, ("CompareRequest: dn: [%s]\n", req->dn));
1323         filter = talloc_asprintf(local_ctx, "(%s=%*s)", req->attribute, 
1324                                  (int)req->value.length, req->value.data);
1325         NT_STATUS_HAVE_NO_MEMORY(filter);
1326
1327         DEBUGADD(10, ("CompareRequest: attribute: [%s]\n", filter));
1328
1329         attrs[0] = NULL;
1330
1331         compare_r = ldapsrv_init_reply(call, LDAP_TAG_CompareResponse);
1332         NT_STATUS_HAVE_NO_MEMORY(compare_r);
1333
1334         if (result == LDAP_SUCCESS) {
1335                 ldb_ret = ldb_search(samdb, local_ctx, &res,
1336                                      dn, LDB_SCOPE_BASE, attrs, "%s", filter);
1337                 if (ldb_ret != LDB_SUCCESS) {
1338                         result = map_ldb_error(local_ctx, ldb_ret,
1339                                                ldb_errstring(samdb), &errstr);
1340                         DEBUG(10,("CompareRequest: error: %s\n", errstr));
1341                 } else if (res->count == 0) {
1342                         DEBUG(10,("CompareRequest: doesn't matched\n"));
1343                         result = LDAP_COMPARE_FALSE;
1344                         errstr = NULL;
1345                 } else if (res->count == 1) {
1346                         DEBUG(10,("CompareRequest: matched\n"));
1347                         result = LDAP_COMPARE_TRUE;
1348                         errstr = NULL;
1349                 } else if (res->count > 1) {
1350                         result = LDAP_OTHER;
1351                         map_ldb_error(local_ctx, LDB_ERR_OTHER, NULL, &errstr);
1352                         errstr = talloc_asprintf(local_ctx,
1353                                 "%s. Too many objects match!", errstr);
1354                         DEBUG(10,("CompareRequest: %d results: %s\n", res->count, errstr));
1355                 }
1356         }
1357
1358         compare = &compare_r->msg->r.CompareResponse;
1359         compare->dn = NULL;
1360         compare->resultcode = result;
1361         compare->errormessage = (errstr?talloc_strdup(compare_r,errstr):NULL);
1362         compare->referral = NULL;
1363
1364         talloc_free(local_ctx);
1365
1366         return ldapsrv_queue_reply(call, compare_r);
1367 }
1368
1369 static NTSTATUS ldapsrv_AbandonRequest(struct ldapsrv_call *call)
1370 {
1371         struct ldap_AbandonRequest *req = &call->request->r.AbandonRequest;
1372         struct ldapsrv_call *c = NULL;
1373         struct ldapsrv_call *n = NULL;
1374
1375         DEBUG(10, ("AbandonRequest\n"));
1376
1377         for (c = call->conn->pending_calls; c != NULL; c = n) {
1378                 n = c->next;
1379
1380                 if (c->request->messageid != req->messageid) {
1381                         continue;
1382                 }
1383
1384                 DLIST_REMOVE(call->conn->pending_calls, c);
1385                 TALLOC_FREE(c);
1386         }
1387
1388         return NT_STATUS_OK;
1389 }
1390
1391 static NTSTATUS ldapsrv_expired(struct ldapsrv_call *call)
1392 {
1393         struct ldapsrv_reply *reply = NULL;
1394         struct ldap_ExtendedResponse *r = NULL;
1395
1396         DBG_DEBUG("Sending connection expired message\n");
1397
1398         reply = ldapsrv_init_reply(call, LDAP_TAG_ExtendedResponse);
1399         if (reply == NULL) {
1400                 return NT_STATUS_NO_MEMORY;
1401         }
1402
1403         /*
1404          * According to RFC4511 section 4.4.1 this has a msgid of 0
1405          */
1406         reply->msg->messageid = 0;
1407
1408         r = &reply->msg->r.ExtendedResponse;
1409         r->response.resultcode = LDB_ERR_UNAVAILABLE;
1410         r->response.errormessage = "The server has timed out this connection";
1411         r->oid = "1.3.6.1.4.1.1466.20036"; /* see rfc4511 section 4.4.1 */
1412
1413         ldapsrv_queue_reply(call, reply);
1414         return NT_STATUS_OK;
1415 }
1416
1417 NTSTATUS ldapsrv_do_call(struct ldapsrv_call *call)
1418 {
1419         unsigned int i;
1420         struct ldap_message *msg = call->request;
1421         struct ldapsrv_connection *conn = call->conn;
1422         NTSTATUS status;
1423         bool expired;
1424
1425         expired = timeval_expired(&conn->limits.expire_time);
1426         if (expired) {
1427                 status = ldapsrv_expired(call);
1428                 if (!NT_STATUS_IS_OK(status)) {
1429                         return status;
1430                 }
1431                 return NT_STATUS_NETWORK_SESSION_EXPIRED;
1432         }
1433
1434         /* Check for undecoded critical extensions */
1435         for (i=0; msg->controls && msg->controls[i]; i++) {
1436                 if (!msg->controls_decoded[i] && 
1437                     msg->controls[i]->critical) {
1438                         DEBUG(3, ("ldapsrv_do_call: Critical extension %s is not known to this server\n",
1439                                   msg->controls[i]->oid));
1440                         return ldapsrv_unwilling(call, LDAP_UNAVAILABLE_CRITICAL_EXTENSION);
1441                 }
1442         }
1443
1444         if (call->conn->authz_logged == false) {
1445                 bool log = true;
1446
1447                 /*
1448                  * We do not want to log anonymous access if the query
1449                  * is just for the rootDSE, or it is a startTLS or a
1450                  * Bind.
1451                  *
1452                  * A rootDSE search could also be done over
1453                  * CLDAP anonymously for example, so these don't
1454                  * really count.
1455                  * Essentially we want to know about
1456                  * access beyond that normally done prior to a
1457                  * bind.
1458                  */
1459
1460                 switch(call->request->type) {
1461                 case LDAP_TAG_BindRequest:
1462                 case LDAP_TAG_UnbindRequest:
1463                 case LDAP_TAG_AbandonRequest:
1464                         log = false;
1465                         break;
1466                 case LDAP_TAG_ExtendedResponse: {
1467                         struct ldap_ExtendedRequest *req = &call->request->r.ExtendedRequest;
1468                         if (strcmp(req->oid, LDB_EXTENDED_START_TLS_OID) == 0) {
1469                                 log = false;
1470                         }
1471                         break;
1472                 }
1473                 case LDAP_TAG_SearchRequest: {
1474                         struct ldap_SearchRequest *req = &call->request->r.SearchRequest;
1475                         if (req->scope == LDAP_SEARCH_SCOPE_BASE) {
1476                                 if (req->basedn[0] == '\0') {
1477                                         log = false;
1478                                 }
1479                         }
1480                         break;
1481                 }
1482                 default:
1483                         break;
1484                 }
1485
1486                 if (log) {
1487                         const char *transport_protection = AUTHZ_TRANSPORT_PROTECTION_NONE;
1488                         if (call->conn->sockets.active == call->conn->sockets.tls) {
1489                                 transport_protection = AUTHZ_TRANSPORT_PROTECTION_TLS;
1490                         }
1491
1492                         log_successful_authz_event(call->conn->connection->msg_ctx,
1493                                                    call->conn->connection->lp_ctx,
1494                                                    call->conn->connection->remote_address,
1495                                                    call->conn->connection->local_address,
1496                                                    "LDAP",
1497                                                    "no bind",
1498                                                    transport_protection,
1499                                                    call->conn->session_info);
1500
1501                         call->conn->authz_logged = true;
1502                 }
1503         }
1504
1505         switch(call->request->type) {
1506         case LDAP_TAG_BindRequest:
1507                 return ldapsrv_BindRequest(call);
1508         case LDAP_TAG_UnbindRequest:
1509                 return ldapsrv_UnbindRequest(call);
1510         case LDAP_TAG_SearchRequest:
1511                 return ldapsrv_SearchRequest(call);
1512         case LDAP_TAG_ModifyRequest:
1513                 status = ldapsrv_ModifyRequest(call);
1514                 break;
1515         case LDAP_TAG_AddRequest:
1516                 status = ldapsrv_AddRequest(call);
1517                 break;
1518         case LDAP_TAG_DelRequest:
1519                 status = ldapsrv_DelRequest(call);
1520                 break;
1521         case LDAP_TAG_ModifyDNRequest:
1522                 status = ldapsrv_ModifyDNRequest(call);
1523                 break;
1524         case LDAP_TAG_CompareRequest:
1525                 return ldapsrv_CompareRequest(call);
1526         case LDAP_TAG_AbandonRequest:
1527                 return ldapsrv_AbandonRequest(call);
1528         case LDAP_TAG_ExtendedRequest:
1529                 status = ldapsrv_ExtendedRequest(call);
1530                 break;
1531         default:
1532                 return ldapsrv_unwilling(call, LDAP_PROTOCOL_ERROR);
1533         }
1534
1535         if (NT_STATUS_IS_OK(status)) {
1536                 ldapsrv_notification_retry_setup(call->conn->service, true);
1537         }
1538
1539         return status;
1540 }