s4:ldap_server: return the extended dn to the LDAP client if available
[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         struct ldb_control *extended_dn_control;
163         struct ldb_extended_dn_control *extended_dn_decoded = NULL;
164         enum ldb_scope scope = LDB_SCOPE_DEFAULT;
165         const char **attrs = NULL;
166         const char *scope_str, *errstr = NULL;
167         int success_limit = 1;
168         int result = -1;
169         int ldb_ret = -1;
170         int i, j;
171         int extended_type = 1;
172
173         DEBUG(10, ("SearchRequest"));
174         DEBUGADD(10, (" basedn: %s", req->basedn));
175         DEBUGADD(10, (" filter: %s\n", ldb_filter_from_tree(call, req->tree)));
176
177         local_ctx = talloc_new(call);
178         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
179
180         basedn = ldb_dn_new(local_ctx, samdb, req->basedn);
181         VALID_DN_SYNTAX(basedn);
182
183         DEBUG(10, ("SearchRequest: basedn: [%s]\n", req->basedn));
184         DEBUG(10, ("SearchRequest: filter: [%s]\n", ldb_filter_from_tree(call, req->tree)));
185
186         switch (req->scope) {
187                 case LDAP_SEARCH_SCOPE_BASE:
188                         scope_str = "BASE";
189                         scope = LDB_SCOPE_BASE;
190                         success_limit = 0;
191                         break;
192                 case LDAP_SEARCH_SCOPE_SINGLE:
193                         scope_str = "ONE";
194                         scope = LDB_SCOPE_ONELEVEL;
195                         success_limit = 0;
196                         break;
197                 case LDAP_SEARCH_SCOPE_SUB:
198                         scope_str = "SUB";
199                         scope = LDB_SCOPE_SUBTREE;
200                         success_limit = 0;
201                         break;
202                 default:
203                         result = LDAP_PROTOCOL_ERROR;
204                         errstr = "Invalid scope";
205                         goto reply;
206         }
207         DEBUG(10,("SearchRequest: scope: [%s]\n", scope_str));
208
209         if (req->num_attributes >= 1) {
210                 attrs = talloc_array(local_ctx, const char *, req->num_attributes+1);
211                 NT_STATUS_HAVE_NO_MEMORY(attrs);
212
213                 for (i=0; i < req->num_attributes; i++) {
214                         DEBUG(10,("SearchRequest: attrs: [%s]\n",req->attributes[i]));
215                         attrs[i] = req->attributes[i];
216                 }
217                 attrs[i] = NULL;
218         }
219
220         DEBUG(5,("ldb_request %s dn=%s filter=%s\n", 
221                  scope_str, req->basedn, ldb_filter_from_tree(call, req->tree)));
222
223         res = talloc_zero(local_ctx, struct ldb_result);
224         NT_STATUS_HAVE_NO_MEMORY(res);
225
226         ldb_ret = ldb_build_search_req_ex(&lreq, samdb, local_ctx,
227                                           basedn, scope,
228                                           req->tree, attrs,
229                                           call->request->controls,
230                                           res, ldb_search_default_callback,
231                                           NULL);
232
233         if (ldb_ret != LDB_SUCCESS) {
234                 goto reply;
235         }
236
237         if (call->conn->global_catalog) {
238                 search_control = ldb_request_get_control(lreq, LDB_CONTROL_SEARCH_OPTIONS_OID);
239
240                 search_options = NULL;
241                 if (search_control) {
242                         search_options = talloc_get_type(search_control->data, struct ldb_search_options_control);
243                         search_options->search_options |= LDB_SEARCH_OPTION_PHANTOM_ROOT;
244                 } else {
245                         search_options = talloc(lreq, struct ldb_search_options_control);
246                         NT_STATUS_HAVE_NO_MEMORY(search_options);
247                         search_options->search_options = LDB_SEARCH_OPTION_PHANTOM_ROOT;
248                         ldb_request_add_control(lreq, LDB_CONTROL_SEARCH_OPTIONS_OID, false, search_options);
249                 }
250         }
251
252         extended_dn_control = ldb_request_get_control(lreq, LDB_CONTROL_EXTENDED_DN_OID);
253
254         if (extended_dn_control) {
255                 if (extended_dn_control->data) {
256                         extended_dn_decoded = talloc_get_type(extended_dn_control->data, struct ldb_extended_dn_control);
257                         extended_type = extended_dn_decoded->type;
258                 } else {
259                         extended_type = 0;
260                 }
261         }
262
263         ldb_set_timeout(samdb, lreq, req->timelimit);
264
265         ldb_ret = ldb_request(samdb, lreq);
266
267         if (ldb_ret != LDB_SUCCESS) {
268                 goto reply;
269         }
270
271         ldb_ret = ldb_wait(lreq->handle, LDB_WAIT_ALL);
272
273         if (ldb_ret == LDB_SUCCESS) {
274                 for (i = 0; i < res->count; i++) {
275                         ent_r = ldapsrv_init_reply(call, LDAP_TAG_SearchResultEntry);
276                         NT_STATUS_HAVE_NO_MEMORY(ent_r);
277
278                         /* Better to have the whole message kept here,
279                          * than to find someone further up didn't put
280                          * a value in the right spot in the talloc tree */
281                         talloc_steal(ent_r, res->msgs[i]);
282                         
283                         ent = &ent_r->msg->r.SearchResultEntry;
284                         ent->dn = ldb_dn_get_extended_linearized(ent_r, res->msgs[i]->dn, extended_type);
285                         ent->num_attributes = 0;
286                         ent->attributes = NULL;
287                         if (res->msgs[i]->num_elements == 0) {
288                                 goto queue_reply;
289                         }
290                         ent->num_attributes = res->msgs[i]->num_elements;
291                         ent->attributes = talloc_array(ent_r, struct ldb_message_element, ent->num_attributes);
292                         NT_STATUS_HAVE_NO_MEMORY(ent->attributes);
293                         for (j=0; j < ent->num_attributes; j++) {
294                                 ent->attributes[j].name = talloc_steal(ent->attributes, res->msgs[i]->elements[j].name);
295                                 ent->attributes[j].num_values = 0;
296                                 ent->attributes[j].values = NULL;
297                                 if (req->attributesonly && (res->msgs[i]->elements[j].num_values == 0)) {
298                                         continue;
299                                 }
300                                 ent->attributes[j].num_values = res->msgs[i]->elements[j].num_values;
301                                 ent->attributes[j].values = res->msgs[i]->elements[j].values;
302                                 talloc_steal(ent->attributes, res->msgs[i]->elements[j].values);
303                         }
304 queue_reply:
305                         ldapsrv_queue_reply(call, ent_r);
306                 }
307         }
308
309 reply:
310         done_r = ldapsrv_init_reply(call, LDAP_TAG_SearchResultDone);
311         NT_STATUS_HAVE_NO_MEMORY(done_r);
312
313         done = &done_r->msg->r.SearchResultDone;
314         done->dn = NULL;
315         done->referral = NULL;
316
317         if (result != -1) {
318         } else if (ldb_ret == LDB_SUCCESS) {
319                 if (res->count >= success_limit) {
320                         DEBUG(10,("SearchRequest: results: [%d]\n", res->count));
321                         result = LDAP_SUCCESS;
322                         errstr = NULL;
323                 }
324                 if (res->controls) {
325                         done_r->msg->controls = res->controls;
326                         talloc_steal(done_r, res->controls);
327                 }
328         } else {
329                 DEBUG(10,("SearchRequest: error\n"));
330                 result = map_ldb_error(samdb, ldb_ret, &errstr);
331         }
332
333         done->resultcode = result;
334         done->errormessage = (errstr?talloc_strdup(done_r, errstr):NULL);
335
336         talloc_free(local_ctx);
337
338         ldapsrv_queue_reply(call, done_r);
339         return NT_STATUS_OK;
340 }
341
342 static NTSTATUS ldapsrv_ModifyRequest(struct ldapsrv_call *call)
343 {
344         struct ldap_ModifyRequest *req = &call->request->r.ModifyRequest;
345         struct ldap_Result *modify_result;
346         struct ldapsrv_reply *modify_reply;
347         void *local_ctx;
348         struct ldb_context *samdb = call->conn->ldb;
349         struct ldb_message *msg = NULL;
350         struct ldb_dn *dn;
351         const char *errstr = NULL;
352         int result = LDAP_SUCCESS;
353         int ldb_ret;
354         int i,j;
355
356         DEBUG(10, ("ModifyRequest"));
357         DEBUGADD(10, (" dn: %s", req->dn));
358
359         local_ctx = talloc_named(call, 0, "ModifyRequest local memory context");
360         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
361
362         dn = ldb_dn_new(local_ctx, samdb, req->dn);
363         VALID_DN_SYNTAX(dn);
364
365         DEBUG(10, ("ModifyRequest: dn: [%s]\n", req->dn));
366
367         msg = talloc(local_ctx, struct ldb_message);
368         NT_STATUS_HAVE_NO_MEMORY(msg);
369
370         msg->dn = dn;
371         msg->num_elements = 0;
372         msg->elements = NULL;
373
374         if (req->num_mods > 0) {
375                 msg->num_elements = req->num_mods;
376                 msg->elements = talloc_array(msg, struct ldb_message_element, req->num_mods);
377                 NT_STATUS_HAVE_NO_MEMORY(msg->elements);
378
379                 for (i=0; i < msg->num_elements; i++) {
380                         msg->elements[i].name = discard_const_p(char, req->mods[i].attrib.name);
381                         msg->elements[i].num_values = 0;
382                         msg->elements[i].values = NULL;
383
384                         switch (req->mods[i].type) {
385                         default:
386                                 result = LDAP_PROTOCOL_ERROR;
387                                 errstr = "Invalid LDAP_MODIFY_* type";
388                                 goto reply;
389                         case LDAP_MODIFY_ADD:
390                                 msg->elements[i].flags = LDB_FLAG_MOD_ADD;
391                                 break;
392                         case LDAP_MODIFY_DELETE:
393                                 msg->elements[i].flags = LDB_FLAG_MOD_DELETE;
394                                 break;
395                         case LDAP_MODIFY_REPLACE:
396                                 msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
397                                 break;
398                         }
399
400                         msg->elements[i].num_values = req->mods[i].attrib.num_values;
401                         if (msg->elements[i].num_values > 0) {
402                                 msg->elements[i].values = talloc_array(msg->elements, struct ldb_val,
403                                                                        msg->elements[i].num_values);
404                                 NT_STATUS_HAVE_NO_MEMORY(msg->elements[i].values);
405
406                                 for (j=0; j < msg->elements[i].num_values; j++) {
407                                         if (!(req->mods[i].attrib.values[j].length > 0)) {
408                                                 result = LDAP_OTHER;
409                                                 errstr = "Empty attribute values are not allowed";
410                                                 goto reply;
411                                         }
412                                         msg->elements[i].values[j].length = req->mods[i].attrib.values[j].length;
413                                         msg->elements[i].values[j].data = req->mods[i].attrib.values[j].data;                   
414                                 }
415                         }
416                 }
417         } else {
418                 result = LDAP_OTHER;
419                 errstr = "No mods are not allowed";
420                 goto reply;
421         }
422
423 reply:
424         modify_reply = ldapsrv_init_reply(call, LDAP_TAG_ModifyResponse);
425         NT_STATUS_HAVE_NO_MEMORY(modify_reply);
426
427         if (result == LDAP_SUCCESS) {
428                 ldb_ret = ldb_modify(samdb, msg);
429                 result = map_ldb_error(samdb, ldb_ret, &errstr);
430         }
431
432         modify_result = &modify_reply->msg->r.AddResponse;
433         modify_result->dn = NULL;
434         modify_result->resultcode = result;
435         modify_result->errormessage = (errstr?talloc_strdup(modify_reply, errstr):NULL);
436         modify_result->referral = NULL;
437
438         talloc_free(local_ctx);
439
440         ldapsrv_queue_reply(call, modify_reply);
441         return NT_STATUS_OK;
442
443 }
444
445 static NTSTATUS ldapsrv_AddRequest(struct ldapsrv_call *call)
446 {
447         struct ldap_AddRequest *req = &call->request->r.AddRequest;
448         struct ldap_Result *add_result;
449         struct ldapsrv_reply *add_reply;
450         void *local_ctx;
451         struct ldb_context *samdb = call->conn->ldb;
452         struct ldb_message *msg = NULL;
453         struct ldb_dn *dn;
454         const char *errstr = NULL;
455         int result = LDAP_SUCCESS;
456         int ldb_ret;
457         int i,j;
458
459         DEBUG(10, ("AddRequest"));
460         DEBUGADD(10, (" dn: %s", req->dn));
461
462         local_ctx = talloc_named(call, 0, "AddRequest local memory context");
463         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
464
465         dn = ldb_dn_new(local_ctx, samdb, req->dn);
466         VALID_DN_SYNTAX(dn);
467
468         DEBUG(10, ("AddRequest: dn: [%s]\n", req->dn));
469
470         msg = talloc(local_ctx, struct ldb_message);
471         NT_STATUS_HAVE_NO_MEMORY(msg);
472
473         msg->dn = dn;
474         msg->num_elements = 0;
475         msg->elements = NULL;
476
477         if (req->num_attributes > 0) {
478                 msg->num_elements = req->num_attributes;
479                 msg->elements = talloc_array(msg, struct ldb_message_element, msg->num_elements);
480                 NT_STATUS_HAVE_NO_MEMORY(msg->elements);
481
482                 for (i=0; i < msg->num_elements; i++) {
483                         msg->elements[i].name = discard_const_p(char, req->attributes[i].name);
484                         msg->elements[i].flags = 0;
485                         msg->elements[i].num_values = 0;
486                         msg->elements[i].values = NULL;
487                         
488                         if (req->attributes[i].num_values > 0) {
489                                 msg->elements[i].num_values = req->attributes[i].num_values;
490                                 msg->elements[i].values = talloc_array(msg->elements, struct ldb_val,
491                                                                        msg->elements[i].num_values);
492                                 NT_STATUS_HAVE_NO_MEMORY(msg->elements[i].values);
493
494                                 for (j=0; j < msg->elements[i].num_values; j++) {
495                                         if (!(req->attributes[i].values[j].length > 0)) {
496                                                 result = LDAP_OTHER;
497                                                 errstr = "Empty attribute values are not allowed";
498                                                 goto reply;
499                                         }
500                                         msg->elements[i].values[j].length = req->attributes[i].values[j].length;
501                                         msg->elements[i].values[j].data = req->attributes[i].values[j].data;                    
502                                 }
503                         } else {
504                                 result = LDAP_OTHER;
505                                 errstr = "No attribute values are not allowed";
506                                 goto reply;
507                         }
508                 }
509         } else {
510                 result = LDAP_OTHER;
511                 errstr = "No attributes are not allowed";
512                 goto reply;
513         }
514
515 reply:
516         add_reply = ldapsrv_init_reply(call, LDAP_TAG_AddResponse);
517         NT_STATUS_HAVE_NO_MEMORY(add_reply);
518
519         if (result == LDAP_SUCCESS) {
520                 ldb_ret = ldb_add(samdb, msg);
521                 result = map_ldb_error(samdb, ldb_ret, &errstr);
522         }
523
524         add_result = &add_reply->msg->r.AddResponse;
525         add_result->dn = NULL;
526         add_result->resultcode = result;
527         add_result->errormessage = (errstr?talloc_strdup(add_reply,errstr):NULL);
528         add_result->referral = NULL;
529
530         talloc_free(local_ctx);
531
532         ldapsrv_queue_reply(call, add_reply);
533         return NT_STATUS_OK;
534
535 }
536
537 static NTSTATUS ldapsrv_DelRequest(struct ldapsrv_call *call)
538 {
539         struct ldap_DelRequest *req = &call->request->r.DelRequest;
540         struct ldap_Result *del_result;
541         struct ldapsrv_reply *del_reply;
542         void *local_ctx;
543         struct ldb_context *samdb = call->conn->ldb;
544         struct ldb_dn *dn;
545         const char *errstr = NULL;
546         int result = LDAP_SUCCESS;
547         int ldb_ret;
548
549         DEBUG(10, ("DelRequest"));
550         DEBUGADD(10, (" dn: %s", req->dn));
551
552         local_ctx = talloc_named(call, 0, "DelRequest local memory context");
553         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
554
555         dn = ldb_dn_new(local_ctx, samdb, req->dn);
556         VALID_DN_SYNTAX(dn);
557
558         DEBUG(10, ("DelRequest: dn: [%s]\n", req->dn));
559
560 reply:
561         del_reply = ldapsrv_init_reply(call, LDAP_TAG_DelResponse);
562         NT_STATUS_HAVE_NO_MEMORY(del_reply);
563
564         if (result == LDAP_SUCCESS) {
565                 ldb_ret = ldb_delete(samdb, dn);
566                 result = map_ldb_error(samdb, ldb_ret, &errstr);
567         }
568
569         del_result = &del_reply->msg->r.DelResponse;
570         del_result->dn = NULL;
571         del_result->resultcode = result;
572         del_result->errormessage = (errstr?talloc_strdup(del_reply,errstr):NULL);
573         del_result->referral = NULL;
574
575         talloc_free(local_ctx);
576
577         ldapsrv_queue_reply(call, del_reply);
578         return NT_STATUS_OK;
579 }
580
581 static NTSTATUS ldapsrv_ModifyDNRequest(struct ldapsrv_call *call)
582 {
583         struct ldap_ModifyDNRequest *req = &call->request->r.ModifyDNRequest;
584         struct ldap_Result *modifydn;
585         struct ldapsrv_reply *modifydn_r;
586         void *local_ctx;
587         struct ldb_context *samdb = call->conn->ldb;
588         struct ldb_dn *olddn, *newdn=NULL, *newrdn;
589         struct ldb_dn *parentdn = NULL;
590         const char *errstr = NULL;
591         int result = LDAP_SUCCESS;
592         int ldb_ret;
593
594         DEBUG(10, ("ModifyDNRequrest"));
595         DEBUGADD(10, (" dn: %s", req->dn));
596         DEBUGADD(10, (" newrdn: %s", req->newrdn));
597
598         local_ctx = talloc_named(call, 0, "ModifyDNRequest local memory context");
599         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
600
601         olddn = ldb_dn_new(local_ctx, samdb, req->dn);
602         VALID_DN_SYNTAX(olddn);
603
604         newrdn = ldb_dn_new(local_ctx, samdb, req->newrdn);
605         VALID_DN_SYNTAX(newrdn);
606
607         DEBUG(10, ("ModifyDNRequest: olddn: [%s]\n", req->dn));
608         DEBUG(10, ("ModifyDNRequest: newrdn: [%s]\n", req->newrdn));
609
610         /* we can't handle the rename if we should not remove the old dn */
611         if (!req->deleteolddn) {
612                 result = LDAP_UNWILLING_TO_PERFORM;
613                 errstr = "Old RDN must be deleted";
614                 goto reply;
615         }
616
617         if (req->newsuperior) {
618                 parentdn = ldb_dn_new(local_ctx, samdb, req->newsuperior);
619                 VALID_DN_SYNTAX(parentdn);
620                 DEBUG(10, ("ModifyDNRequest: newsuperior: [%s]\n", req->newsuperior));
621                 
622                 if (ldb_dn_get_comp_num(parentdn) < 1) {
623                         result = LDAP_AFFECTS_MULTIPLE_DSAS;
624                         errstr = "Error new Superior DN invalid";
625                         goto reply;
626                 }
627         }
628
629         if (!parentdn) {
630                 parentdn = ldb_dn_get_parent(local_ctx, olddn);
631                 NT_STATUS_HAVE_NO_MEMORY(parentdn);
632         }
633
634         if ( ! ldb_dn_add_child_fmt(parentdn,
635                                 "%s=%s",
636                                 ldb_dn_get_rdn_name(newrdn),
637                                 (char *)ldb_dn_get_rdn_val(newrdn)->data)) {
638                 result = LDAP_OTHER;
639                 goto reply;
640         }
641         newdn = parentdn;
642
643 reply:
644         modifydn_r = ldapsrv_init_reply(call, LDAP_TAG_ModifyDNResponse);
645         NT_STATUS_HAVE_NO_MEMORY(modifydn_r);
646
647         if (result == LDAP_SUCCESS) {
648                 ldb_ret = ldb_rename(samdb, olddn, newdn);
649                 result = map_ldb_error(samdb, ldb_ret, &errstr);
650         }
651
652         modifydn = &modifydn_r->msg->r.ModifyDNResponse;
653         modifydn->dn = NULL;
654         modifydn->resultcode = result;
655         modifydn->errormessage = (errstr?talloc_strdup(modifydn_r,errstr):NULL);
656         modifydn->referral = NULL;
657
658         talloc_free(local_ctx);
659
660         ldapsrv_queue_reply(call, modifydn_r);
661         return NT_STATUS_OK;
662 }
663
664 static NTSTATUS ldapsrv_CompareRequest(struct ldapsrv_call *call)
665 {
666         struct ldap_CompareRequest *req = &call->request->r.CompareRequest;
667         struct ldap_Result *compare;
668         struct ldapsrv_reply *compare_r;
669         void *local_ctx;
670         struct ldb_context *samdb = call->conn->ldb;
671         struct ldb_result *res = NULL;
672         struct ldb_dn *dn;
673         const char *attrs[1];
674         const char *errstr = NULL;
675         const char *filter = NULL;
676         int result = LDAP_SUCCESS;
677         int ldb_ret;
678
679         DEBUG(10, ("CompareRequest"));
680         DEBUGADD(10, (" dn: %s", req->dn));
681
682         local_ctx = talloc_named(call, 0, "CompareRequest local_memory_context");
683         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
684
685         dn = ldb_dn_new(local_ctx, samdb, req->dn);
686         VALID_DN_SYNTAX(dn);
687
688         DEBUG(10, ("CompareRequest: dn: [%s]\n", req->dn));
689         filter = talloc_asprintf(local_ctx, "(%s=%*s)", req->attribute, 
690                                  (int)req->value.length, req->value.data);
691         NT_STATUS_HAVE_NO_MEMORY(filter);
692
693         DEBUGADD(10, ("CompareRequest: attribute: [%s]\n", filter));
694
695         attrs[0] = NULL;
696
697 reply:
698         compare_r = ldapsrv_init_reply(call, LDAP_TAG_CompareResponse);
699         NT_STATUS_HAVE_NO_MEMORY(compare_r);
700
701         if (result == LDAP_SUCCESS) {
702                 ldb_ret = ldb_search(samdb, local_ctx, &res,
703                                      dn, LDB_SCOPE_BASE, attrs, "%s", filter);
704                 if (ldb_ret != LDB_SUCCESS) {
705                         result = map_ldb_error(samdb, ldb_ret, &errstr);
706                         DEBUG(10,("CompareRequest: error: %s\n", errstr));
707                 } else if (res->count == 0) {
708                         DEBUG(10,("CompareRequest: doesn't matched\n"));
709                         result = LDAP_COMPARE_FALSE;
710                         errstr = NULL;
711                 } else if (res->count == 1) {
712                         DEBUG(10,("CompareRequest: matched\n"));
713                         result = LDAP_COMPARE_TRUE;
714                         errstr = NULL;
715                 } else if (res->count > 1) {
716                         result = LDAP_OTHER;
717                         errstr = "too many objects match";
718                         DEBUG(10,("CompareRequest: %d results: %s\n", res->count, errstr));
719                 }
720         }
721
722         compare = &compare_r->msg->r.CompareResponse;
723         compare->dn = NULL;
724         compare->resultcode = result;
725         compare->errormessage = (errstr?talloc_strdup(compare_r,errstr):NULL);
726         compare->referral = NULL;
727
728         talloc_free(local_ctx);
729
730         ldapsrv_queue_reply(call, compare_r);
731         return NT_STATUS_OK;
732 }
733
734 static NTSTATUS ldapsrv_AbandonRequest(struct ldapsrv_call *call)
735 {
736 /*      struct ldap_AbandonRequest *req = &call->request.r.AbandonRequest;*/
737         DEBUG(10, ("AbandonRequest\n"));
738         return NT_STATUS_OK;
739 }
740
741 NTSTATUS ldapsrv_do_call(struct ldapsrv_call *call)
742 {
743         int i;
744         struct ldap_message *msg = call->request;
745         /* Check for undecoded critical extensions */
746         for (i=0; msg->controls && msg->controls[i]; i++) {
747                 if (!msg->controls_decoded[i] && 
748                     msg->controls[i]->critical) {
749                         DEBUG(3, ("ldapsrv_do_call: Critical extension %s is not known to this server\n",
750                                   msg->controls[i]->oid));
751                         return ldapsrv_unwilling(call, LDAP_UNAVAILABLE_CRITICAL_EXTENSION);
752                 }
753         }
754
755         switch(call->request->type) {
756         case LDAP_TAG_BindRequest:
757                 return ldapsrv_BindRequest(call);
758         case LDAP_TAG_UnbindRequest:
759                 return ldapsrv_UnbindRequest(call);
760         case LDAP_TAG_SearchRequest:
761                 return ldapsrv_SearchRequest(call);
762         case LDAP_TAG_ModifyRequest:
763                 return ldapsrv_ModifyRequest(call);
764         case LDAP_TAG_AddRequest:
765                 return ldapsrv_AddRequest(call);
766         case LDAP_TAG_DelRequest:
767                 return ldapsrv_DelRequest(call);
768         case LDAP_TAG_ModifyDNRequest:
769                 return ldapsrv_ModifyDNRequest(call);
770         case LDAP_TAG_CompareRequest:
771                 return ldapsrv_CompareRequest(call);
772         case LDAP_TAG_AbandonRequest:
773                 return ldapsrv_AbandonRequest(call);
774         case LDAP_TAG_ExtendedRequest:
775                 return ldapsrv_ExtendedRequest(call);
776         default:
777                 return ldapsrv_unwilling(call, 2);
778         }
779 }