Remove restrictions on number of DN components in LDAP server
[kai/samba.git] / source4 / ldap_server / ldap_backend.c
1 /* 
2    Unix SMB/CIFS implementation.
3    LDAP server
4    Copyright (C) Stefan Metzmacher 2004
5    
6    This program is free software; you can redistribute it and/or modify
7    it under the terms of the GNU General Public License as published by
8    the Free Software Foundation; either version 3 of the License, or
9    (at your option) any later version.
10    
11    This program is distributed in the hope that it will be useful,
12    but WITHOUT ANY WARRANTY; without even the implied warranty of
13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14    GNU General Public License for more details.
15    
16    You should have received a copy of the GNU General Public License
17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
18 */
19
20 #include "includes.h"
21 #include "ldap_server/ldap_server.h"
22 #include "../lib/util/dlinklist.h"
23 #include "libcli/ldap/ldap.h"
24 #include "auth/credentials/credentials.h"
25 #include "auth/gensec/gensec.h"
26 #include "param/param.h"
27 #include "smbd/service_stream.h"
28 #include "dsdb/samdb/samdb.h"
29 #include "lib/ldb/include/ldb_errors.h"
30 #include "lib/ldb_wrap.h"
31
32 #define VALID_DN_SYNTAX(dn) do {\
33         if (!(dn)) {\
34                 return NT_STATUS_NO_MEMORY;\
35         } else if ( ! ldb_dn_validate(dn)) {\
36                 result = LDAP_INVALID_DN_SYNTAX;\
37                 errstr = "Invalid DN format";\
38                 goto reply;\
39         }\
40 } while(0)
41
42 static int map_ldb_error(struct ldb_context *ldb, int err, const char **errstring)
43 {
44         *errstring = ldb_errstring(ldb);
45         
46         /* its 1:1 for now */
47         return err;
48 }
49
50 /*
51   connect to the sam database
52 */
53 NTSTATUS ldapsrv_backend_Init(struct ldapsrv_connection *conn) 
54 {
55         conn->ldb = ldb_wrap_connect(conn, 
56                                      conn->connection->event.ctx,
57                                      conn->lp_ctx,
58                                      lp_sam_url(conn->lp_ctx), 
59                                      conn->session_info,
60                                      samdb_credentials(conn, conn->connection->event.ctx, conn->lp_ctx), 
61                                      conn->global_catalog ? LDB_FLG_RDONLY : 0, NULL);
62         if (conn->ldb == NULL) {
63                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
64         }
65
66         if (conn->server_credentials) {
67                 char **sasl_mechs = NULL;
68                 struct gensec_security_ops **backends = gensec_security_all();
69                 struct gensec_security_ops **ops
70                         = gensec_use_kerberos_mechs(conn, backends, conn->server_credentials);
71                 int i, j = 0;
72                 for (i = 0; ops && ops[i]; i++) {
73                         if (!gensec_security_ops_enabled(ops[i], conn->lp_ctx))
74                                 continue;
75
76                         if (ops[i]->sasl_name && ops[i]->server_start) {
77                                 char *sasl_name = talloc_strdup(conn, ops[i]->sasl_name);
78
79                                 if (!sasl_name) {
80                                         return NT_STATUS_NO_MEMORY;
81                                 }
82                                 sasl_mechs = talloc_realloc(conn, sasl_mechs, char *, j + 2);
83                                 if (!sasl_mechs) {
84                                         return NT_STATUS_NO_MEMORY;
85                                 }
86                                 sasl_mechs[j] = sasl_name;
87                                 talloc_steal(sasl_mechs, sasl_name);
88                                 sasl_mechs[j+1] = NULL;
89                                 j++;
90                         }
91                 }
92                 talloc_free(ops);
93                 ldb_set_opaque(conn->ldb, "supportedSASLMechanims", sasl_mechs);
94         }
95
96         return NT_STATUS_OK;
97 }
98
99 struct ldapsrv_reply *ldapsrv_init_reply(struct ldapsrv_call *call, uint8_t type)
100 {
101         struct ldapsrv_reply *reply;
102
103         reply = talloc(call, struct ldapsrv_reply);
104         if (!reply) {
105                 return NULL;
106         }
107         reply->msg = talloc(reply, struct ldap_message);
108         if (reply->msg == NULL) {
109                 talloc_free(reply);
110                 return NULL;
111         }
112
113         reply->msg->messageid = call->request->messageid;
114         reply->msg->type = type;
115         reply->msg->controls = NULL;
116
117         return reply;
118 }
119
120 void ldapsrv_queue_reply(struct ldapsrv_call *call, struct ldapsrv_reply *reply)
121 {
122         DLIST_ADD_END(call->replies, reply, struct ldapsrv_reply *);
123 }
124
125 static NTSTATUS ldapsrv_unwilling(struct ldapsrv_call *call, int error)
126 {
127         struct ldapsrv_reply *reply;
128         struct ldap_ExtendedResponse *r;
129
130         DEBUG(10,("Unwilling type[%d] id[%d]\n", call->request->type, call->request->messageid));
131
132         reply = ldapsrv_init_reply(call, LDAP_TAG_ExtendedResponse);
133         if (!reply) {
134                 return NT_STATUS_NO_MEMORY;
135         }
136
137         r = &reply->msg->r.ExtendedResponse;
138         r->response.resultcode = error;
139         r->response.dn = NULL;
140         r->response.errormessage = NULL;
141         r->response.referral = NULL;
142         r->oid = NULL;
143         r->value = NULL;
144
145         ldapsrv_queue_reply(call, reply);
146         return NT_STATUS_OK;
147 }
148
149 static NTSTATUS ldapsrv_SearchRequest(struct ldapsrv_call *call)
150 {
151         struct ldap_SearchRequest *req = &call->request->r.SearchRequest;
152         struct ldap_SearchResEntry *ent;
153         struct ldap_Result *done;
154         struct ldapsrv_reply *ent_r, *done_r;
155         void *local_ctx;
156         struct ldb_context *samdb = talloc_get_type(call->conn->ldb, struct ldb_context);
157         struct ldb_dn *basedn;
158         struct ldb_result *res = NULL;
159         struct ldb_request *lreq;
160         struct ldb_control *search_control;
161         struct ldb_search_options_control *search_options;
162         enum ldb_scope scope = LDB_SCOPE_DEFAULT;
163         const char **attrs = NULL;
164         const char *scope_str, *errstr = NULL;
165         int success_limit = 1;
166         int result = -1;
167         int ldb_ret = -1;
168         int i, j;
169
170         DEBUG(10, ("SearchRequest"));
171         DEBUGADD(10, (" basedn: %s", req->basedn));
172         DEBUGADD(10, (" filter: %s\n", ldb_filter_from_tree(call, req->tree)));
173
174         local_ctx = talloc_new(call);
175         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
176
177         basedn = ldb_dn_new(local_ctx, samdb, req->basedn);
178         VALID_DN_SYNTAX(basedn);
179
180         DEBUG(10, ("SearchRequest: basedn: [%s]\n", req->basedn));
181         DEBUG(10, ("SearchRequest: filter: [%s]\n", ldb_filter_from_tree(call, req->tree)));
182
183         switch (req->scope) {
184                 case LDAP_SEARCH_SCOPE_BASE:
185                         scope_str = "BASE";
186                         scope = LDB_SCOPE_BASE;
187                         success_limit = 0;
188                         break;
189                 case LDAP_SEARCH_SCOPE_SINGLE:
190                         scope_str = "ONE";
191                         scope = LDB_SCOPE_ONELEVEL;
192                         success_limit = 0;
193                         break;
194                 case LDAP_SEARCH_SCOPE_SUB:
195                         scope_str = "SUB";
196                         scope = LDB_SCOPE_SUBTREE;
197                         success_limit = 0;
198                         break;
199                 default:
200                         result = LDAP_PROTOCOL_ERROR;
201                         errstr = "Invalid scope";
202                         goto reply;
203         }
204         DEBUG(10,("SearchRequest: scope: [%s]\n", scope_str));
205
206         if (req->num_attributes >= 1) {
207                 attrs = talloc_array(local_ctx, const char *, req->num_attributes+1);
208                 NT_STATUS_HAVE_NO_MEMORY(attrs);
209
210                 for (i=0; i < req->num_attributes; i++) {
211                         DEBUG(10,("SearchRequest: attrs: [%s]\n",req->attributes[i]));
212                         attrs[i] = req->attributes[i];
213                 }
214                 attrs[i] = NULL;
215         }
216
217         DEBUG(5,("ldb_request %s dn=%s filter=%s\n", 
218                  scope_str, req->basedn, ldb_filter_from_tree(call, req->tree)));
219
220         res = talloc_zero(local_ctx, struct ldb_result);
221         NT_STATUS_HAVE_NO_MEMORY(res);
222
223         ldb_ret = ldb_build_search_req_ex(&lreq, samdb, local_ctx,
224                                           basedn, scope,
225                                           req->tree, attrs,
226                                           call->request->controls,
227                                           res, ldb_search_default_callback,
228                                           NULL);
229
230         if (ldb_ret != LDB_SUCCESS) {
231                 goto reply;
232         }
233
234         if (call->conn->global_catalog) {
235                 search_control = ldb_request_get_control(lreq, LDB_CONTROL_SEARCH_OPTIONS_OID);
236
237                 search_options = NULL;
238                 if (search_control) {
239                         search_options = talloc_get_type(search_control->data, struct ldb_search_options_control);
240                         search_options->search_options |= LDB_SEARCH_OPTION_PHANTOM_ROOT;
241                 } else {
242                         search_options = talloc(lreq, struct ldb_search_options_control);
243                         NT_STATUS_HAVE_NO_MEMORY(search_options);
244                         search_options->search_options = LDB_SEARCH_OPTION_PHANTOM_ROOT;
245                         ldb_request_add_control(lreq, LDB_CONTROL_SEARCH_OPTIONS_OID, false, search_options);
246                 }
247         }
248         ldb_set_timeout(samdb, lreq, req->timelimit);
249
250         ldb_ret = ldb_request(samdb, lreq);
251
252         if (ldb_ret != LDB_SUCCESS) {
253                 goto reply;
254         }
255
256         ldb_ret = ldb_wait(lreq->handle, LDB_WAIT_ALL);
257
258         if (ldb_ret == LDB_SUCCESS) {
259                 for (i = 0; i < res->count; i++) {
260                         ent_r = ldapsrv_init_reply(call, LDAP_TAG_SearchResultEntry);
261                         NT_STATUS_HAVE_NO_MEMORY(ent_r);
262
263                         /* Better to have the whole message kept here,
264                          * than to find someone further up didn't put
265                          * a value in the right spot in the talloc tree */
266                         talloc_steal(ent_r, res->msgs[i]);
267                         
268                         ent = &ent_r->msg->r.SearchResultEntry;
269                         ent->dn = ldb_dn_alloc_linearized(ent_r, res->msgs[i]->dn);
270                         ent->num_attributes = 0;
271                         ent->attributes = NULL;
272                         if (res->msgs[i]->num_elements == 0) {
273                                 goto queue_reply;
274                         }
275                         ent->num_attributes = res->msgs[i]->num_elements;
276                         ent->attributes = talloc_array(ent_r, struct ldb_message_element, ent->num_attributes);
277                         NT_STATUS_HAVE_NO_MEMORY(ent->attributes);
278                         for (j=0; j < ent->num_attributes; j++) {
279                                 ent->attributes[j].name = talloc_steal(ent->attributes, res->msgs[i]->elements[j].name);
280                                 ent->attributes[j].num_values = 0;
281                                 ent->attributes[j].values = NULL;
282                                 if (req->attributesonly && (res->msgs[i]->elements[j].num_values == 0)) {
283                                         continue;
284                                 }
285                                 ent->attributes[j].num_values = res->msgs[i]->elements[j].num_values;
286                                 ent->attributes[j].values = res->msgs[i]->elements[j].values;
287                                 talloc_steal(ent->attributes, res->msgs[i]->elements[j].values);
288                         }
289 queue_reply:
290                         ldapsrv_queue_reply(call, ent_r);
291                 }
292         }
293
294 reply:
295         done_r = ldapsrv_init_reply(call, LDAP_TAG_SearchResultDone);
296         NT_STATUS_HAVE_NO_MEMORY(done_r);
297
298         done = &done_r->msg->r.SearchResultDone;
299         done->dn = NULL;
300         done->referral = NULL;
301
302         if (result != -1) {
303         } else if (ldb_ret == LDB_SUCCESS) {
304                 if (res->count >= success_limit) {
305                         DEBUG(10,("SearchRequest: results: [%d]\n", res->count));
306                         result = LDAP_SUCCESS;
307                         errstr = NULL;
308                 }
309                 if (res->controls) {
310                         done_r->msg->controls = res->controls;
311                         talloc_steal(done_r, res->controls);
312                 }
313         } else {
314                 DEBUG(10,("SearchRequest: error\n"));
315                 result = map_ldb_error(samdb, ldb_ret, &errstr);
316         }
317
318         done->resultcode = result;
319         done->errormessage = (errstr?talloc_strdup(done_r, errstr):NULL);
320
321         talloc_free(local_ctx);
322
323         ldapsrv_queue_reply(call, done_r);
324         return NT_STATUS_OK;
325 }
326
327 static NTSTATUS ldapsrv_ModifyRequest(struct ldapsrv_call *call)
328 {
329         struct ldap_ModifyRequest *req = &call->request->r.ModifyRequest;
330         struct ldap_Result *modify_result;
331         struct ldapsrv_reply *modify_reply;
332         void *local_ctx;
333         struct ldb_context *samdb = call->conn->ldb;
334         struct ldb_message *msg = NULL;
335         struct ldb_dn *dn;
336         const char *errstr = NULL;
337         int result = LDAP_SUCCESS;
338         int ldb_ret;
339         int i,j;
340
341         DEBUG(10, ("ModifyRequest"));
342         DEBUGADD(10, (" dn: %s", req->dn));
343
344         local_ctx = talloc_named(call, 0, "ModifyRequest local memory context");
345         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
346
347         dn = ldb_dn_new(local_ctx, samdb, req->dn);
348         VALID_DN_SYNTAX(dn);
349
350         DEBUG(10, ("ModifyRequest: dn: [%s]\n", req->dn));
351
352         msg = talloc(local_ctx, struct ldb_message);
353         NT_STATUS_HAVE_NO_MEMORY(msg);
354
355         msg->dn = dn;
356         msg->num_elements = 0;
357         msg->elements = NULL;
358
359         if (req->num_mods > 0) {
360                 msg->num_elements = req->num_mods;
361                 msg->elements = talloc_array(msg, struct ldb_message_element, req->num_mods);
362                 NT_STATUS_HAVE_NO_MEMORY(msg->elements);
363
364                 for (i=0; i < msg->num_elements; i++) {
365                         msg->elements[i].name = discard_const_p(char, req->mods[i].attrib.name);
366                         msg->elements[i].num_values = 0;
367                         msg->elements[i].values = NULL;
368
369                         switch (req->mods[i].type) {
370                         default:
371                                 result = LDAP_PROTOCOL_ERROR;
372                                 errstr = "Invalid LDAP_MODIFY_* type";
373                                 goto reply;
374                         case LDAP_MODIFY_ADD:
375                                 msg->elements[i].flags = LDB_FLAG_MOD_ADD;
376                                 break;
377                         case LDAP_MODIFY_DELETE:
378                                 msg->elements[i].flags = LDB_FLAG_MOD_DELETE;
379                                 break;
380                         case LDAP_MODIFY_REPLACE:
381                                 msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
382                                 break;
383                         }
384
385                         msg->elements[i].num_values = req->mods[i].attrib.num_values;
386                         if (msg->elements[i].num_values > 0) {
387                                 msg->elements[i].values = talloc_array(msg->elements, struct ldb_val,
388                                                                        msg->elements[i].num_values);
389                                 NT_STATUS_HAVE_NO_MEMORY(msg->elements[i].values);
390
391                                 for (j=0; j < msg->elements[i].num_values; j++) {
392                                         if (!(req->mods[i].attrib.values[j].length > 0)) {
393                                                 result = LDAP_OTHER;
394                                                 errstr = "Empty attribute values are not allowed";
395                                                 goto reply;
396                                         }
397                                         msg->elements[i].values[j].length = req->mods[i].attrib.values[j].length;
398                                         msg->elements[i].values[j].data = req->mods[i].attrib.values[j].data;                   
399                                 }
400                         }
401                 }
402         } else {
403                 result = LDAP_OTHER;
404                 errstr = "No mods are not allowed";
405                 goto reply;
406         }
407
408 reply:
409         modify_reply = ldapsrv_init_reply(call, LDAP_TAG_ModifyResponse);
410         NT_STATUS_HAVE_NO_MEMORY(modify_reply);
411
412         if (result == LDAP_SUCCESS) {
413                 ldb_ret = ldb_modify(samdb, msg);
414                 result = map_ldb_error(samdb, ldb_ret, &errstr);
415         }
416
417         modify_result = &modify_reply->msg->r.AddResponse;
418         modify_result->dn = NULL;
419         modify_result->resultcode = result;
420         modify_result->errormessage = (errstr?talloc_strdup(modify_reply, errstr):NULL);
421         modify_result->referral = NULL;
422
423         talloc_free(local_ctx);
424
425         ldapsrv_queue_reply(call, modify_reply);
426         return NT_STATUS_OK;
427
428 }
429
430 static NTSTATUS ldapsrv_AddRequest(struct ldapsrv_call *call)
431 {
432         struct ldap_AddRequest *req = &call->request->r.AddRequest;
433         struct ldap_Result *add_result;
434         struct ldapsrv_reply *add_reply;
435         void *local_ctx;
436         struct ldb_context *samdb = call->conn->ldb;
437         struct ldb_message *msg = NULL;
438         struct ldb_dn *dn;
439         const char *errstr = NULL;
440         int result = LDAP_SUCCESS;
441         int ldb_ret;
442         int i,j;
443
444         DEBUG(10, ("AddRequest"));
445         DEBUGADD(10, (" dn: %s", req->dn));
446
447         local_ctx = talloc_named(call, 0, "AddRequest local memory context");
448         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
449
450         dn = ldb_dn_new(local_ctx, samdb, req->dn);
451         VALID_DN_SYNTAX(dn);
452
453         DEBUG(10, ("AddRequest: dn: [%s]\n", req->dn));
454
455         msg = talloc(local_ctx, struct ldb_message);
456         NT_STATUS_HAVE_NO_MEMORY(msg);
457
458         msg->dn = dn;
459         msg->num_elements = 0;
460         msg->elements = NULL;
461
462         if (req->num_attributes > 0) {
463                 msg->num_elements = req->num_attributes;
464                 msg->elements = talloc_array(msg, struct ldb_message_element, msg->num_elements);
465                 NT_STATUS_HAVE_NO_MEMORY(msg->elements);
466
467                 for (i=0; i < msg->num_elements; i++) {
468                         msg->elements[i].name = discard_const_p(char, req->attributes[i].name);
469                         msg->elements[i].flags = 0;
470                         msg->elements[i].num_values = 0;
471                         msg->elements[i].values = NULL;
472                         
473                         if (req->attributes[i].num_values > 0) {
474                                 msg->elements[i].num_values = req->attributes[i].num_values;
475                                 msg->elements[i].values = talloc_array(msg->elements, struct ldb_val,
476                                                                        msg->elements[i].num_values);
477                                 NT_STATUS_HAVE_NO_MEMORY(msg->elements[i].values);
478
479                                 for (j=0; j < msg->elements[i].num_values; j++) {
480                                         if (!(req->attributes[i].values[j].length > 0)) {
481                                                 result = LDAP_OTHER;
482                                                 errstr = "Empty attribute values are not allowed";
483                                                 goto reply;
484                                         }
485                                         msg->elements[i].values[j].length = req->attributes[i].values[j].length;
486                                         msg->elements[i].values[j].data = req->attributes[i].values[j].data;                    
487                                 }
488                         } else {
489                                 result = LDAP_OTHER;
490                                 errstr = "No attribute values are not allowed";
491                                 goto reply;
492                         }
493                 }
494         } else {
495                 result = LDAP_OTHER;
496                 errstr = "No attributes are not allowed";
497                 goto reply;
498         }
499
500 reply:
501         add_reply = ldapsrv_init_reply(call, LDAP_TAG_AddResponse);
502         NT_STATUS_HAVE_NO_MEMORY(add_reply);
503
504         if (result == LDAP_SUCCESS) {
505                 ldb_ret = ldb_add(samdb, msg);
506                 result = map_ldb_error(samdb, ldb_ret, &errstr);
507         }
508
509         add_result = &add_reply->msg->r.AddResponse;
510         add_result->dn = NULL;
511         add_result->resultcode = result;
512         add_result->errormessage = (errstr?talloc_strdup(add_reply,errstr):NULL);
513         add_result->referral = NULL;
514
515         talloc_free(local_ctx);
516
517         ldapsrv_queue_reply(call, add_reply);
518         return NT_STATUS_OK;
519
520 }
521
522 static NTSTATUS ldapsrv_DelRequest(struct ldapsrv_call *call)
523 {
524         struct ldap_DelRequest *req = &call->request->r.DelRequest;
525         struct ldap_Result *del_result;
526         struct ldapsrv_reply *del_reply;
527         void *local_ctx;
528         struct ldb_context *samdb = call->conn->ldb;
529         struct ldb_dn *dn;
530         const char *errstr = NULL;
531         int result = LDAP_SUCCESS;
532         int ldb_ret;
533
534         DEBUG(10, ("DelRequest"));
535         DEBUGADD(10, (" dn: %s", req->dn));
536
537         local_ctx = talloc_named(call, 0, "DelRequest local memory context");
538         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
539
540         dn = ldb_dn_new(local_ctx, samdb, req->dn);
541         VALID_DN_SYNTAX(dn);
542
543         DEBUG(10, ("DelRequest: dn: [%s]\n", req->dn));
544
545 reply:
546         del_reply = ldapsrv_init_reply(call, LDAP_TAG_DelResponse);
547         NT_STATUS_HAVE_NO_MEMORY(del_reply);
548
549         if (result == LDAP_SUCCESS) {
550                 ldb_ret = ldb_delete(samdb, dn);
551                 result = map_ldb_error(samdb, ldb_ret, &errstr);
552         }
553
554         del_result = &del_reply->msg->r.DelResponse;
555         del_result->dn = NULL;
556         del_result->resultcode = result;
557         del_result->errormessage = (errstr?talloc_strdup(del_reply,errstr):NULL);
558         del_result->referral = NULL;
559
560         talloc_free(local_ctx);
561
562         ldapsrv_queue_reply(call, del_reply);
563         return NT_STATUS_OK;
564 }
565
566 static NTSTATUS ldapsrv_ModifyDNRequest(struct ldapsrv_call *call)
567 {
568         struct ldap_ModifyDNRequest *req = &call->request->r.ModifyDNRequest;
569         struct ldap_Result *modifydn;
570         struct ldapsrv_reply *modifydn_r;
571         void *local_ctx;
572         struct ldb_context *samdb = call->conn->ldb;
573         struct ldb_dn *olddn, *newdn=NULL, *newrdn;
574         struct ldb_dn *parentdn = NULL;
575         const char *errstr = NULL;
576         int result = LDAP_SUCCESS;
577         int ldb_ret;
578
579         DEBUG(10, ("ModifyDNRequrest"));
580         DEBUGADD(10, (" dn: %s", req->dn));
581         DEBUGADD(10, (" newrdn: %s", req->newrdn));
582
583         local_ctx = talloc_named(call, 0, "ModifyDNRequest local memory context");
584         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
585
586         olddn = ldb_dn_new(local_ctx, samdb, req->dn);
587         VALID_DN_SYNTAX(olddn);
588
589         newrdn = ldb_dn_new(local_ctx, samdb, req->newrdn);
590         VALID_DN_SYNTAX(newrdn);
591
592         DEBUG(10, ("ModifyDNRequest: olddn: [%s]\n", req->dn));
593         DEBUG(10, ("ModifyDNRequest: newrdn: [%s]\n", req->newrdn));
594
595         /* we can't handle the rename if we should not remove the old dn */
596         if (!req->deleteolddn) {
597                 result = LDAP_UNWILLING_TO_PERFORM;
598                 errstr = "Old RDN must be deleted";
599                 goto reply;
600         }
601
602         if (req->newsuperior) {
603                 parentdn = ldb_dn_new(local_ctx, samdb, req->newsuperior);
604                 VALID_DN_SYNTAX(parentdn);
605                 DEBUG(10, ("ModifyDNRequest: newsuperior: [%s]\n", req->newsuperior));
606                 
607                 if (ldb_dn_get_comp_num(parentdn) < 1) {
608                         result = LDAP_AFFECTS_MULTIPLE_DSAS;
609                         errstr = "Error new Superior DN invalid";
610                         goto reply;
611                 }
612         }
613
614         if (!parentdn) {
615                 parentdn = ldb_dn_get_parent(local_ctx, olddn);
616                 NT_STATUS_HAVE_NO_MEMORY(parentdn);
617         }
618
619         if ( ! ldb_dn_add_child_fmt(parentdn,
620                                 "%s=%s",
621                                 ldb_dn_get_rdn_name(newrdn),
622                                 (char *)ldb_dn_get_rdn_val(newrdn)->data)) {
623                 result = LDAP_OTHER;
624                 goto reply;
625         }
626         newdn = parentdn;
627
628 reply:
629         modifydn_r = ldapsrv_init_reply(call, LDAP_TAG_ModifyDNResponse);
630         NT_STATUS_HAVE_NO_MEMORY(modifydn_r);
631
632         if (result == LDAP_SUCCESS) {
633                 ldb_ret = ldb_rename(samdb, olddn, newdn);
634                 result = map_ldb_error(samdb, ldb_ret, &errstr);
635         }
636
637         modifydn = &modifydn_r->msg->r.ModifyDNResponse;
638         modifydn->dn = NULL;
639         modifydn->resultcode = result;
640         modifydn->errormessage = (errstr?talloc_strdup(modifydn_r,errstr):NULL);
641         modifydn->referral = NULL;
642
643         talloc_free(local_ctx);
644
645         ldapsrv_queue_reply(call, modifydn_r);
646         return NT_STATUS_OK;
647 }
648
649 static NTSTATUS ldapsrv_CompareRequest(struct ldapsrv_call *call)
650 {
651         struct ldap_CompareRequest *req = &call->request->r.CompareRequest;
652         struct ldap_Result *compare;
653         struct ldapsrv_reply *compare_r;
654         void *local_ctx;
655         struct ldb_context *samdb = call->conn->ldb;
656         struct ldb_result *res = NULL;
657         struct ldb_dn *dn;
658         const char *attrs[1];
659         const char *errstr = NULL;
660         const char *filter = NULL;
661         int result = LDAP_SUCCESS;
662         int ldb_ret;
663
664         DEBUG(10, ("CompareRequest"));
665         DEBUGADD(10, (" dn: %s", req->dn));
666
667         local_ctx = talloc_named(call, 0, "CompareRequest local_memory_context");
668         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
669
670         dn = ldb_dn_new(local_ctx, samdb, req->dn);
671         VALID_DN_SYNTAX(dn);
672
673         DEBUG(10, ("CompareRequest: dn: [%s]\n", req->dn));
674         filter = talloc_asprintf(local_ctx, "(%s=%*s)", req->attribute, 
675                                  (int)req->value.length, req->value.data);
676         NT_STATUS_HAVE_NO_MEMORY(filter);
677
678         DEBUGADD(10, ("CompareRequest: attribute: [%s]\n", filter));
679
680         attrs[0] = NULL;
681
682 reply:
683         compare_r = ldapsrv_init_reply(call, LDAP_TAG_CompareResponse);
684         NT_STATUS_HAVE_NO_MEMORY(compare_r);
685
686         if (result == LDAP_SUCCESS) {
687                 ldb_ret = ldb_search(samdb, local_ctx, &res,
688                                      dn, LDB_SCOPE_BASE, attrs, "%s", filter);
689                 if (ldb_ret != LDB_SUCCESS) {
690                         result = map_ldb_error(samdb, ldb_ret, &errstr);
691                         DEBUG(10,("CompareRequest: error: %s\n", errstr));
692                 } else if (res->count == 0) {
693                         DEBUG(10,("CompareRequest: doesn't matched\n"));
694                         result = LDAP_COMPARE_FALSE;
695                         errstr = NULL;
696                 } else if (res->count == 1) {
697                         DEBUG(10,("CompareRequest: matched\n"));
698                         result = LDAP_COMPARE_TRUE;
699                         errstr = NULL;
700                 } else if (res->count > 1) {
701                         result = LDAP_OTHER;
702                         errstr = "too many objects match";
703                         DEBUG(10,("CompareRequest: %d results: %s\n", res->count, errstr));
704                 }
705         }
706
707         compare = &compare_r->msg->r.CompareResponse;
708         compare->dn = NULL;
709         compare->resultcode = result;
710         compare->errormessage = (errstr?talloc_strdup(compare_r,errstr):NULL);
711         compare->referral = NULL;
712
713         talloc_free(local_ctx);
714
715         ldapsrv_queue_reply(call, compare_r);
716         return NT_STATUS_OK;
717 }
718
719 static NTSTATUS ldapsrv_AbandonRequest(struct ldapsrv_call *call)
720 {
721 /*      struct ldap_AbandonRequest *req = &call->request.r.AbandonRequest;*/
722         DEBUG(10, ("AbandonRequest\n"));
723         return NT_STATUS_OK;
724 }
725
726 NTSTATUS ldapsrv_do_call(struct ldapsrv_call *call)
727 {
728         int i;
729         struct ldap_message *msg = call->request;
730         /* Check for undecoded critical extensions */
731         for (i=0; msg->controls && msg->controls[i]; i++) {
732                 if (!msg->controls_decoded[i] && 
733                     msg->controls[i]->critical) {
734                         DEBUG(3, ("ldapsrv_do_call: Critical extension %s is not known to this server\n",
735                                   msg->controls[i]->oid));
736                         return ldapsrv_unwilling(call, LDAP_UNAVAILABLE_CRITICAL_EXTENSION);
737                 }
738         }
739
740         switch(call->request->type) {
741         case LDAP_TAG_BindRequest:
742                 return ldapsrv_BindRequest(call);
743         case LDAP_TAG_UnbindRequest:
744                 return ldapsrv_UnbindRequest(call);
745         case LDAP_TAG_SearchRequest:
746                 return ldapsrv_SearchRequest(call);
747         case LDAP_TAG_ModifyRequest:
748                 return ldapsrv_ModifyRequest(call);
749         case LDAP_TAG_AddRequest:
750                 return ldapsrv_AddRequest(call);
751         case LDAP_TAG_DelRequest:
752                 return ldapsrv_DelRequest(call);
753         case LDAP_TAG_ModifyDNRequest:
754                 return ldapsrv_ModifyDNRequest(call);
755         case LDAP_TAG_CompareRequest:
756                 return ldapsrv_CompareRequest(call);
757         case LDAP_TAG_AbandonRequest:
758                 return ldapsrv_AbandonRequest(call);
759         case LDAP_TAG_ExtendedRequest:
760                 return ldapsrv_ExtendedRequest(call);
761         default:
762                 return ldapsrv_unwilling(call, 2);
763         }
764 }