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,i) 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         } else if (ldb_dn_get_comp_num(dn) < (i)) {\
  40                 result = LDAP_INVALID_DN_SYNTAX;\
  41                 errstr = "Invalid DN (" #i " components needed for '" #dn "')";\
  42                 goto reply;\
  43         }\
  44 } while(0)
  45
  46 static int map_ldb_error(struct ldb_context *ldb, int err, const char **errstring)
  47 {
  48         *errstring = ldb_errstring(ldb);
  49
  50         /* its 1:1 for now */
  51         return err;
  52 }
  53
  54 /*
  55   connect to the sam database
  56 */
  57 NTSTATUS ldapsrv_backend_Init(struct ldapsrv_connection *conn)
  58 {
  59         conn->ldb = ldb_wrap_connect(conn,
  60                                      conn->connection->event.ctx,
  61                                      conn->lp_ctx,
  62                                      lp_sam_url(conn->lp_ctx),
  63                                      conn->session_info,
  64                                      samdb_credentials(conn, conn->connection->event.ctx, conn->lp_ctx),
  65                                      conn->global_catalog ? LDB_FLG_RDONLY : 0, NULL);
  66         if (conn->ldb == NULL) {
  67                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
  68         }
  69
  70         if (conn->server_credentials) {
  71                 char **sasl_mechs = NULL;
  72                 struct gensec_security_ops **backends = gensec_security_all();
  73                 struct gensec_security_ops **ops
  74                         = gensec_use_kerberos_mechs(conn, backends, conn->server_credentials);
  75                 int i, j = 0;
  76                 for (i = 0; ops && ops[i]; i++) {
  77                         if (ops[i]->sasl_name && ops[i]->server_start) {
  78                                 char *sasl_name = talloc_strdup(conn, ops[i]->sasl_name);
  79
  80                                 if (!sasl_name) {
  81                                         return NT_STATUS_NO_MEMORY;
  82                                 }
  83                                 sasl_mechs = talloc_realloc(conn, sasl_mechs, char *, j + 2);
  84                                 if (!sasl_mechs) {
  85                                         return NT_STATUS_NO_MEMORY;
  86                                 }
  87                                 sasl_mechs[j] = sasl_name;
  88                                 talloc_steal(sasl_mechs, sasl_name);
  89                                 sasl_mechs[j+1] = NULL;
  90                                 j++;
  91                         }
  92                 }
  93                 talloc_free(ops);
  94                 ldb_set_opaque(conn->ldb, "supportedSASLMechanims", sasl_mechs);
  95         }
  96
  97         return NT_STATUS_OK;
  98 }
  99
 100 struct ldapsrv_reply *ldapsrv_init_reply(struct ldapsrv_call *call, uint8_t type)
 101 {
 102         struct ldapsrv_reply *reply;
 103
 104         reply = talloc(call, struct ldapsrv_reply);
 105         if (!reply) {
 106                 return NULL;
 107         }
 108         reply->msg = talloc(reply, struct ldap_message);
 109         if (reply->msg == NULL) {
 110                 talloc_free(reply);
 111                 return NULL;
 112         }
 113
 114         reply->msg->messageid = call->request->messageid;
 115         reply->msg->type = type;
 116         reply->msg->controls = NULL;
 117
 118         return reply;
 119 }
 120
 121 void ldapsrv_queue_reply(struct ldapsrv_call *call, struct ldapsrv_reply *reply)
 122 {
 123         DLIST_ADD_END(call->replies, reply, struct ldapsrv_reply *);
 124 }
 125
 126 static NTSTATUS ldapsrv_unwilling(struct ldapsrv_call *call, int error)
 127 {
 128         struct ldapsrv_reply *reply;
 129         struct ldap_ExtendedResponse *r;
 130
 131         DEBUG(10,("Unwilling type[%d] id[%d]\n", call->request->type, call->request->messageid));
 132
 133         reply = ldapsrv_init_reply(call, LDAP_TAG_ExtendedResponse);
 134         if (!reply) {
 135                 return NT_STATUS_NO_MEMORY;
 136         }
 137
 138         r = &reply->msg->r.ExtendedResponse;
 139         r->response.resultcode = error;
 140         r->response.dn = NULL;
 141         r->response.errormessage = NULL;
 142         r->response.referral = NULL;
 143         r->oid = NULL;
 144         r->value = NULL;
 145
 146         ldapsrv_queue_reply(call, reply);
 147         return NT_STATUS_OK;
 148 }
 149
 150 static NTSTATUS ldapsrv_SearchRequest(struct ldapsrv_call *call)
 151 {
 152         struct ldap_SearchRequest *req = &call->request->r.SearchRequest;
 153         struct ldap_SearchResEntry *ent;
 154         struct ldap_Result *done;
 155         struct ldapsrv_reply *ent_r, *done_r;
 156         void *local_ctx;
 157         struct ldb_context *samdb = talloc_get_type(call->conn->ldb, struct ldb_context);
 158         struct ldb_dn *basedn;
 159         struct ldb_result *res = NULL;
 160         struct ldb_request *lreq;
 161         struct ldb_control *search_control;
 162         struct ldb_search_options_control *search_options;
 163         enum ldb_scope scope = LDB_SCOPE_DEFAULT;
 164         const char **attrs = NULL;
 165         const char *scope_str, *errstr = NULL;
 166         int success_limit = 1;
 167         int result = -1;
 168         int ldb_ret = -1;
 169         int i, j;
 170
 171         DEBUG(10, ("SearchRequest"));
 172         DEBUGADD(10, (" basedn: %s", req->basedn));
 173         DEBUGADD(10, (" filter: %s\n", ldb_filter_from_tree(call, req->tree)));
 174
 175         local_ctx = talloc_new(call);
 176         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 177
 178         basedn = ldb_dn_new(local_ctx, samdb, req->basedn);
 179         VALID_DN_SYNTAX(basedn, 0);
 180
 181         DEBUG(10, ("SearchRequest: basedn: [%s]\n", req->basedn));
 182         DEBUG(10, ("SearchRequest: filter: [%s]\n", ldb_filter_from_tree(call, req->tree)));
 183
 184         switch (req->scope) {
 185                 case LDAP_SEARCH_SCOPE_BASE:
 186                         scope_str = "BASE";
 187                         scope = LDB_SCOPE_BASE;
 188                         success_limit = 0;
 189                         break;
 190                 case LDAP_SEARCH_SCOPE_SINGLE:
 191                         scope_str = "ONE";
 192                         scope = LDB_SCOPE_ONELEVEL;
 193                         success_limit = 0;
 194                         break;
 195                 case LDAP_SEARCH_SCOPE_SUB:
 196                         scope_str = "SUB";
 197                         scope = LDB_SCOPE_SUBTREE;
 198                         success_limit = 0;
 199                         break;
 200                 default:
 201                         result = LDAP_PROTOCOL_ERROR;
 202                         errstr = "Invalid scope";
 203                         goto reply;
 204         }
 205         DEBUG(10,("SearchRequest: scope: [%s]\n", scope_str));
 206
 207         if (req->num_attributes >= 1) {
 208                 attrs = talloc_array(local_ctx, const char *, req->num_attributes+1);
 209                 NT_STATUS_HAVE_NO_MEMORY(attrs);
 210
 211                 for (i=0; i < req->num_attributes; i++) {
 212                         DEBUG(10,("SearchRequest: attrs: [%s]\n",req->attributes[i]));
 213                         attrs[i] = req->attributes[i];
 214                 }
 215                 attrs[i] = NULL;
 216         }
 217
 218         DEBUG(5,("ldb_request %s dn=%s filter=%s\n",
 219                  scope_str, req->basedn, ldb_filter_from_tree(call, req->tree)));
 220
 221         res = talloc_zero(local_ctx, struct ldb_result);
 222         NT_STATUS_HAVE_NO_MEMORY(res);
 223
 224         ldb_ret = ldb_build_search_req_ex(&lreq, samdb, local_ctx,
 225                                           basedn, scope,
 226                                           req->tree, attrs,
 227                                           call->request->controls,
 228                                           res, ldb_search_default_callback,
 229                                           NULL);
 230
 231         if (ldb_ret != LDB_SUCCESS) {
 232                 goto reply;
 233         }
 234
 235         if (call->conn->global_catalog) {
 236                 search_control = ldb_request_get_control(lreq, LDB_CONTROL_SEARCH_OPTIONS_OID);
 237
 238                 search_options = NULL;
 239                 if (search_control) {
 240                         search_options = talloc_get_type(search_control->data, struct ldb_search_options_control);
 241                         search_options->search_options |= LDB_SEARCH_OPTION_PHANTOM_ROOT;
 242                 } else {
 243                         search_options = talloc(lreq, struct ldb_search_options_control);
 244                         NT_STATUS_HAVE_NO_MEMORY(search_options);
 245                         search_options->search_options = LDB_SEARCH_OPTION_PHANTOM_ROOT;
 246                         ldb_request_add_control(lreq, LDB_CONTROL_SEARCH_OPTIONS_OID, false, search_options);
 247                 }
 248         }
 249         ldb_set_timeout(samdb, lreq, req->timelimit);
 250
 251         ldb_ret = ldb_request(samdb, lreq);
 252
 253         if (ldb_ret != LDB_SUCCESS) {
 254                 goto reply;
 255         }
 256
 257         ldb_ret = ldb_wait(lreq->handle, LDB_WAIT_ALL);
 258
 259         if (ldb_ret == LDB_SUCCESS) {
 260                 for (i = 0; i < res->count; i++) {
 261                         ent_r = ldapsrv_init_reply(call, LDAP_TAG_SearchResultEntry);
 262                         NT_STATUS_HAVE_NO_MEMORY(ent_r);
 263
 264                         /* Better to have the whole message kept here,
 265                          * than to find someone further up didn't put
 266                          * a value in the right spot in the talloc tree */
 267                         talloc_steal(ent_r, res->msgs[i]);
 268
 269                         ent = &ent_r->msg->r.SearchResultEntry;
 270                         ent->dn = ldb_dn_alloc_linearized(ent_r, res->msgs[i]->dn);
 271                         ent->num_attributes = 0;
 272                         ent->attributes = NULL;
 273                         if (res->msgs[i]->num_elements == 0) {
 274                                 goto queue_reply;
 275                         }
 276                         ent->num_attributes = res->msgs[i]->num_elements;
 277                         ent->attributes = talloc_array(ent_r, struct ldb_message_element, ent->num_attributes);
 278                         NT_STATUS_HAVE_NO_MEMORY(ent->attributes);
 279                         for (j=0; j < ent->num_attributes; j++) {
 280                                 ent->attributes[j].name = talloc_steal(ent->attributes, res->msgs[i]->elements[j].name);
 281                                 ent->attributes[j].num_values = 0;
 282                                 ent->attributes[j].values = NULL;
 283                                 if (req->attributesonly && (res->msgs[i]->elements[j].num_values == 0)) {
 284                                         continue;
 285                                 }
 286                                 ent->attributes[j].num_values = res->msgs[i]->elements[j].num_values;
 287                                 ent->attributes[j].values = res->msgs[i]->elements[j].values;
 288                                 talloc_steal(ent->attributes, res->msgs[i]->elements[j].values);
 289                         }
 290 queue_reply:
 291                         ldapsrv_queue_reply(call, ent_r);
 292                 }
 293         }
 294
 295 reply:
 296         done_r = ldapsrv_init_reply(call, LDAP_TAG_SearchResultDone);
 297         NT_STATUS_HAVE_NO_MEMORY(done_r);
 298
 299         done = &done_r->msg->r.SearchResultDone;
 300         done->dn = NULL;
 301         done->referral = NULL;
 302
 303         if (result != -1) {
 304         } else if (ldb_ret == LDB_SUCCESS) {
 305                 if (res->count >= success_limit) {
 306                         DEBUG(10,("SearchRequest: results: [%d]\n", res->count));
 307                         result = LDAP_SUCCESS;
 308                         errstr = NULL;
 309                 }
 310                 if (res->controls) {
 311                         done_r->msg->controls = res->controls;
 312                         talloc_steal(done_r, res->controls);
 313                 }
 314         } else {
 315                 DEBUG(10,("SearchRequest: error\n"));
 316                 result = map_ldb_error(samdb, ldb_ret, &errstr);
 317         }
 318
 319         done->resultcode = result;
 320         done->errormessage = (errstr?talloc_strdup(done_r, errstr):NULL);
 321
 322         talloc_free(local_ctx);
 323
 324         ldapsrv_queue_reply(call, done_r);
 325         return NT_STATUS_OK;
 326 }
 327
 328 static NTSTATUS ldapsrv_ModifyRequest(struct ldapsrv_call *call)
 329 {
 330         struct ldap_ModifyRequest *req = &call->request->r.ModifyRequest;
 331         struct ldap_Result *modify_result;
 332         struct ldapsrv_reply *modify_reply;
 333         void *local_ctx;
 334         struct ldb_context *samdb = call->conn->ldb;
 335         struct ldb_message *msg = NULL;
 336         struct ldb_dn *dn;
 337         const char *errstr = NULL;
 338         int result = LDAP_SUCCESS;
 339         int ldb_ret;
 340         int i,j;
 341
 342         DEBUG(10, ("ModifyRequest"));
 343         DEBUGADD(10, (" dn: %s", req->dn));
 344
 345         local_ctx = talloc_named(call, 0, "ModifyRequest local memory context");
 346         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 347
 348         dn = ldb_dn_new(local_ctx, samdb, req->dn);
 349         VALID_DN_SYNTAX(dn, 0);
 350
 351         DEBUG(10, ("ModifyRequest: dn: [%s]\n", req->dn));
 352
 353         msg = talloc(local_ctx, struct ldb_message);
 354         NT_STATUS_HAVE_NO_MEMORY(msg);
 355
 356         msg->dn = dn;
 357         msg->num_elements = 0;
 358         msg->elements = NULL;
 359
 360         if (req->num_mods > 0) {
 361                 msg->num_elements = req->num_mods;
 362                 msg->elements = talloc_array(msg, struct ldb_message_element, req->num_mods);
 363                 NT_STATUS_HAVE_NO_MEMORY(msg->elements);
 364
 365                 for (i=0; i < msg->num_elements; i++) {
 366                         msg->elements[i].name = discard_const_p(char, req->mods[i].attrib.name);
 367                         msg->elements[i].num_values = 0;
 368                         msg->elements[i].values = NULL;
 369
 370                         switch (req->mods[i].type) {
 371                         default:
 372                                 result = LDAP_PROTOCOL_ERROR;
 373                                 errstr = "Invalid LDAP_MODIFY_* type";
 374                                 goto reply;
 375                         case LDAP_MODIFY_ADD:
 376                                 msg->elements[i].flags = LDB_FLAG_MOD_ADD;
 377                                 break;
 378                         case LDAP_MODIFY_DELETE:
 379                                 msg->elements[i].flags = LDB_FLAG_MOD_DELETE;
 380                                 break;
 381                         case LDAP_MODIFY_REPLACE:
 382                                 msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
 383                                 break;
 384                         }
 385
 386                         msg->elements[i].num_values = req->mods[i].attrib.num_values;
 387                         if (msg->elements[i].num_values > 0) {
 388                                 msg->elements[i].values = talloc_array(msg->elements, struct ldb_val,
 389                                                                        msg->elements[i].num_values);
 390                                 NT_STATUS_HAVE_NO_MEMORY(msg->elements[i].values);
 391
 392                                 for (j=0; j < msg->elements[i].num_values; j++) {
 393                                         if (!(req->mods[i].attrib.values[j].length > 0)) {
 394                                                 result = LDAP_OTHER;
 395                                                 errstr = "Empty attribute values are not allowed";
 396                                                 goto reply;
 397                                         }
 398                                         msg->elements[i].values[j].length = req->mods[i].attrib.values[j].length;
 399                                         msg->elements[i].values[j].data = req->mods[i].attrib.values[j].data;
 400                                 }
 401                         }
 402                 }
 403         } else {
 404                 result = LDAP_OTHER;
 405                 errstr = "No mods are not allowed";
 406                 goto reply;
 407         }
 408
 409 reply:
 410         modify_reply = ldapsrv_init_reply(call, LDAP_TAG_ModifyResponse);
 411         NT_STATUS_HAVE_NO_MEMORY(modify_reply);
 412
 413         if (result == LDAP_SUCCESS) {
 414                 ldb_ret = ldb_modify(samdb, msg);
 415                 result = map_ldb_error(samdb, ldb_ret, &errstr);
 416         }
 417
 418         modify_result = &modify_reply->msg->r.AddResponse;
 419         modify_result->dn = NULL;
 420         modify_result->resultcode = result;
 421         modify_result->errormessage = (errstr?talloc_strdup(modify_reply, errstr):NULL);
 422         modify_result->referral = NULL;
 423
 424         talloc_free(local_ctx);
 425
 426         ldapsrv_queue_reply(call, modify_reply);
 427         return NT_STATUS_OK;
 428
 429 }
 430
 431 static NTSTATUS ldapsrv_AddRequest(struct ldapsrv_call *call)
 432 {
 433         struct ldap_AddRequest *req = &call->request->r.AddRequest;
 434         struct ldap_Result *add_result;
 435         struct ldapsrv_reply *add_reply;
 436         void *local_ctx;
 437         struct ldb_context *samdb = call->conn->ldb;
 438         struct ldb_message *msg = NULL;
 439         struct ldb_dn *dn;
 440         const char *errstr = NULL;
 441         int result = LDAP_SUCCESS;
 442         int ldb_ret;
 443         int i,j;
 444
 445         DEBUG(10, ("AddRequest"));
 446         DEBUGADD(10, (" dn: %s", req->dn));
 447
 448         local_ctx = talloc_named(call, 0, "AddRequest local memory context");
 449         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 450
 451         dn = ldb_dn_new(local_ctx, samdb, req->dn);
 452         VALID_DN_SYNTAX(dn,1);
 453
 454         DEBUG(10, ("AddRequest: dn: [%s]\n", req->dn));
 455
 456         msg = talloc(local_ctx, struct ldb_message);
 457         NT_STATUS_HAVE_NO_MEMORY(msg);
 458
 459         msg->dn = dn;
 460         msg->num_elements = 0;
 461         msg->elements = NULL;
 462
 463         if (req->num_attributes > 0) {
 464                 msg->num_elements = req->num_attributes;
 465                 msg->elements = talloc_array(msg, struct ldb_message_element, msg->num_elements);
 466                 NT_STATUS_HAVE_NO_MEMORY(msg->elements);
 467
 468                 for (i=0; i < msg->num_elements; i++) {
 469                         msg->elements[i].name = discard_const_p(char, req->attributes[i].name);
 470                         msg->elements[i].flags = 0;
 471                         msg->elements[i].num_values = 0;
 472                         msg->elements[i].values = NULL;
 473
 474                         if (req->attributes[i].num_values > 0) {
 475                                 msg->elements[i].num_values = req->attributes[i].num_values;
 476                                 msg->elements[i].values = talloc_array(msg->elements, struct ldb_val,
 477                                                                        msg->elements[i].num_values);
 478                                 NT_STATUS_HAVE_NO_MEMORY(msg->elements[i].values);
 479
 480                                 for (j=0; j < msg->elements[i].num_values; j++) {
 481                                         if (!(req->attributes[i].values[j].length > 0)) {
 482                                                 result = LDAP_OTHER;
 483                                                 errstr = "Empty attribute values are not allowed";
 484                                                 goto reply;
 485                                         }
 486                                         msg->elements[i].values[j].length = req->attributes[i].values[j].length;
 487                                         msg->elements[i].values[j].data = req->attributes[i].values[j].data;
 488                                 }
 489                         } else {
 490                                 result = LDAP_OTHER;
 491                                 errstr = "No attribute values are not allowed";
 492                                 goto reply;
 493                         }
 494                 }
 495         } else {
 496                 result = LDAP_OTHER;
 497                 errstr = "No attributes are not allowed";
 498                 goto reply;
 499         }
 500
 501 reply:
 502         add_reply = ldapsrv_init_reply(call, LDAP_TAG_AddResponse);
 503         NT_STATUS_HAVE_NO_MEMORY(add_reply);
 504
 505         if (result == LDAP_SUCCESS) {
 506                 ldb_ret = ldb_add(samdb, msg);
 507                 result = map_ldb_error(samdb, ldb_ret, &errstr);
 508         }
 509
 510         add_result = &add_reply->msg->r.AddResponse;
 511         add_result->dn = NULL;
 512         add_result->resultcode = result;
 513         add_result->errormessage = (errstr?talloc_strdup(add_reply,errstr):NULL);
 514         add_result->referral = NULL;
 515
 516         talloc_free(local_ctx);
 517
 518         ldapsrv_queue_reply(call, add_reply);
 519         return NT_STATUS_OK;
 520
 521 }
 522
 523 static NTSTATUS ldapsrv_DelRequest(struct ldapsrv_call *call)
 524 {
 525         struct ldap_DelRequest *req = &call->request->r.DelRequest;
 526         struct ldap_Result *del_result;
 527         struct ldapsrv_reply *del_reply;
 528         void *local_ctx;
 529         struct ldb_context *samdb = call->conn->ldb;
 530         struct ldb_dn *dn;
 531         const char *errstr = NULL;
 532         int result = LDAP_SUCCESS;
 533         int ldb_ret;
 534
 535         DEBUG(10, ("DelRequest"));
 536         DEBUGADD(10, (" dn: %s", req->dn));
 537
 538         local_ctx = talloc_named(call, 0, "DelRequest local memory context");
 539         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 540
 541         dn = ldb_dn_new(local_ctx, samdb, req->dn);
 542         VALID_DN_SYNTAX(dn,1);
 543
 544         DEBUG(10, ("DelRequest: dn: [%s]\n", req->dn));
 545
 546 reply:
 547         del_reply = ldapsrv_init_reply(call, LDAP_TAG_DelResponse);
 548         NT_STATUS_HAVE_NO_MEMORY(del_reply);
 549
 550         if (result == LDAP_SUCCESS) {
 551                 ldb_ret = ldb_delete(samdb, dn);
 552                 result = map_ldb_error(samdb, ldb_ret, &errstr);
 553         }
 554
 555         del_result = &del_reply->msg->r.DelResponse;
 556         del_result->dn = NULL;
 557         del_result->resultcode = result;
 558         del_result->errormessage = (errstr?talloc_strdup(del_reply,errstr):NULL);
 559         del_result->referral = NULL;
 560
 561         talloc_free(local_ctx);
 562
 563         ldapsrv_queue_reply(call, del_reply);
 564         return NT_STATUS_OK;
 565 }
 566
 567 static NTSTATUS ldapsrv_ModifyDNRequest(struct ldapsrv_call *call)
 568 {
 569         struct ldap_ModifyDNRequest *req = &call->request->r.ModifyDNRequest;
 570         struct ldap_Result *modifydn;
 571         struct ldapsrv_reply *modifydn_r;
 572         void *local_ctx;
 573         struct ldb_context *samdb = call->conn->ldb;
 574         struct ldb_dn *olddn, *newdn=NULL, *newrdn;
 575         struct ldb_dn *parentdn = NULL;
 576         const char *errstr = NULL;
 577         int result = LDAP_SUCCESS;
 578         int ldb_ret;
 579
 580         DEBUG(10, ("ModifyDNRequrest"));
 581         DEBUGADD(10, (" dn: %s", req->dn));
 582         DEBUGADD(10, (" newrdn: %s", req->newrdn));
 583
 584         local_ctx = talloc_named(call, 0, "ModifyDNRequest local memory context");
 585         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 586
 587         olddn = ldb_dn_new(local_ctx, samdb, req->dn);
 588         VALID_DN_SYNTAX(olddn, 2);
 589
 590         newrdn = ldb_dn_new(local_ctx, samdb, req->newrdn);
 591         VALID_DN_SYNTAX(newrdn, 1);
 592
 593         DEBUG(10, ("ModifyDNRequest: olddn: [%s]\n", req->dn));
 594         DEBUG(10, ("ModifyDNRequest: newrdn: [%s]\n", req->newrdn));
 595
 596         /* we can't handle the rename if we should not remove the old dn */
 597         if (!req->deleteolddn) {
 598                 result = LDAP_UNWILLING_TO_PERFORM;
 599                 errstr = "Old RDN must be deleted";
 600                 goto reply;
 601         }
 602
 603         if (req->newsuperior) {
 604                 parentdn = ldb_dn_new(local_ctx, samdb, req->newsuperior);
 605                 VALID_DN_SYNTAX(parentdn, 0);
 606                 DEBUG(10, ("ModifyDNRequest: newsuperior: [%s]\n", req->newsuperior));
 607
 608                 if (ldb_dn_get_comp_num(parentdn) < 1) {
 609                         result = LDAP_AFFECTS_MULTIPLE_DSAS;
 610                         errstr = "Error new Superior DN invalid";
 611                         goto reply;
 612                 }
 613         }
 614
 615         if (!parentdn) {
 616                 parentdn = ldb_dn_get_parent(local_ctx, olddn);
 617                 NT_STATUS_HAVE_NO_MEMORY(parentdn);
 618         }
 619
 620         if ( ! ldb_dn_add_child_fmt(parentdn,
 621                                 "%s=%s",
 622                                 ldb_dn_get_rdn_name(newrdn),
 623                                 (char *)ldb_dn_get_rdn_val(newrdn)->data)) {
 624                 result = LDAP_OTHER;
 625                 goto reply;
 626         }
 627         newdn = parentdn;
 628
 629 reply:
 630         modifydn_r = ldapsrv_init_reply(call, LDAP_TAG_ModifyDNResponse);
 631         NT_STATUS_HAVE_NO_MEMORY(modifydn_r);
 632
 633         if (result == LDAP_SUCCESS) {
 634                 ldb_ret = ldb_rename(samdb, olddn, newdn);
 635                 result = map_ldb_error(samdb, ldb_ret, &errstr);
 636         }
 637
 638         modifydn = &modifydn_r->msg->r.ModifyDNResponse;
 639         modifydn->dn = NULL;
 640         modifydn->resultcode = result;
 641         modifydn->errormessage = (errstr?talloc_strdup(modifydn_r,errstr):NULL);
 642         modifydn->referral = NULL;
 643
 644         talloc_free(local_ctx);
 645
 646         ldapsrv_queue_reply(call, modifydn_r);
 647         return NT_STATUS_OK;
 648 }
 649
 650 static NTSTATUS ldapsrv_CompareRequest(struct ldapsrv_call *call)
 651 {
 652         struct ldap_CompareRequest *req = &call->request->r.CompareRequest;
 653         struct ldap_Result *compare;
 654         struct ldapsrv_reply *compare_r;
 655         void *local_ctx;
 656         struct ldb_context *samdb = call->conn->ldb;
 657         struct ldb_result *res = NULL;
 658         struct ldb_dn *dn;
 659         const char *attrs[1];
 660         const char *errstr = NULL;
 661         const char *filter = NULL;
 662         int result = LDAP_SUCCESS;
 663         int ldb_ret;
 664
 665         DEBUG(10, ("CompareRequest"));
 666         DEBUGADD(10, (" dn: %s", req->dn));
 667
 668         local_ctx = talloc_named(call, 0, "CompareRequest local_memory_context");
 669         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 670
 671         dn = ldb_dn_new(local_ctx, samdb, req->dn);
 672         VALID_DN_SYNTAX(dn, 1);
 673
 674         DEBUG(10, ("CompareRequest: dn: [%s]\n", req->dn));
 675         filter = talloc_asprintf(local_ctx, "(%s=%*s)", req->attribute,
 676                                  (int)req->value.length, req->value.data);
 677         NT_STATUS_HAVE_NO_MEMORY(filter);
 678
 679         DEBUGADD(10, ("CompareRequest: attribute: [%s]\n", filter));
 680
 681         attrs[0] = NULL;
 682
 683 reply:
 684         compare_r = ldapsrv_init_reply(call, LDAP_TAG_CompareResponse);
 685         NT_STATUS_HAVE_NO_MEMORY(compare_r);
 686
 687         if (result == LDAP_SUCCESS) {
 688                 ldb_ret = ldb_search(samdb, local_ctx, &res,
 689                                      dn, LDB_SCOPE_BASE, attrs, "%s", filter);
 690                 if (ldb_ret != LDB_SUCCESS) {
 691                         result = map_ldb_error(samdb, ldb_ret, &errstr);
 692                         DEBUG(10,("CompareRequest: error: %s\n", errstr));
 693                 } else if (res->count == 0) {
 694                         DEBUG(10,("CompareRequest: doesn't matched\n"));
 695                         result = LDAP_COMPARE_FALSE;
 696                         errstr = NULL;
 697                 } else if (res->count == 1) {
 698                         DEBUG(10,("CompareRequest: matched\n"));
 699                         result = LDAP_COMPARE_TRUE;
 700                         errstr = NULL;
 701                 } else if (res->count > 1) {
 702                         result = LDAP_OTHER;
 703                         errstr = "too many objects match";
 704                         DEBUG(10,("CompareRequest: %d results: %s\n", res->count, errstr));
 705                 }
 706         }
 707
 708         compare = &compare_r->msg->r.CompareResponse;
 709         compare->dn = NULL;
 710         compare->resultcode = result;
 711         compare->errormessage = (errstr?talloc_strdup(compare_r,errstr):NULL);
 712         compare->referral = NULL;
 713
 714         talloc_free(local_ctx);
 715
 716         ldapsrv_queue_reply(call, compare_r);
 717         return NT_STATUS_OK;
 718 }
 719
 720 static NTSTATUS ldapsrv_AbandonRequest(struct ldapsrv_call *call)
 721 {
 722 /*      struct ldap_AbandonRequest *req = &call->request.r.AbandonRequest;*/
 723         DEBUG(10, ("AbandonRequest\n"));
 724         return NT_STATUS_OK;
 725 }
 726
 727 NTSTATUS ldapsrv_do_call(struct ldapsrv_call *call)
 728 {
 729         int i;
 730         struct ldap_message *msg = call->request;
 731         /* Check for undecoded critical extensions */
 732         for (i=0; msg->controls && msg->controls[i]; i++) {
 733                 if (!msg->controls_decoded[i] &&
 734                     msg->controls[i]->critical) {
 735                         DEBUG(3, ("ldapsrv_do_call: Critical extension %s is not known to this server\n",
 736                                   msg->controls[i]->oid));
 737                         return ldapsrv_unwilling(call, LDAP_UNAVAILABLE_CRITICAL_EXTENSION);
 738                 }
 739         }
 740
 741         switch(call->request->type) {
 742         case LDAP_TAG_BindRequest:
 743                 return ldapsrv_BindRequest(call);
 744         case LDAP_TAG_UnbindRequest:
 745                 return ldapsrv_UnbindRequest(call);
 746         case LDAP_TAG_SearchRequest:
 747                 return ldapsrv_SearchRequest(call);
 748         case LDAP_TAG_ModifyRequest:
 749                 return ldapsrv_ModifyRequest(call);
 750         case LDAP_TAG_AddRequest:
 751                 return ldapsrv_AddRequest(call);
 752         case LDAP_TAG_DelRequest:
 753                 return ldapsrv_DelRequest(call);
 754         case LDAP_TAG_ModifyDNRequest:
 755                 return ldapsrv_ModifyDNRequest(call);
 756         case LDAP_TAG_CompareRequest:
 757                 return ldapsrv_CompareRequest(call);
 758         case LDAP_TAG_AbandonRequest:
 759                 return ldapsrv_AbandonRequest(call);
 760         case LDAP_TAG_ExtendedRequest:
 761                 return ldapsrv_ExtendedRequest(call);
 762         default:
 763                 return ldapsrv_unwilling(call, 2);
 764         }
 765 }