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 "lib/ldb/include/ldb.h"
  25 #include "lib/ldb/include/ldb_errors.h"
  26 #include "lib/ldb_wrap.h"
  27 #include "auth/credentials/credentials.h"
  28 #include "auth/gensec/gensec.h"
  29 #include "param/param.h"
  30 #include "smbd/service_stream.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                                      NULL, conn->global_catalog ? LDB_FLG_RDONLY : 0, NULL);
  65         if (conn->ldb == NULL) {
  66                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
  67         }
  68
  69         if (conn->server_credentials) {
  70                 char **sasl_mechs = NULL;
  71                 struct gensec_security_ops **backends = gensec_security_all();
  72                 struct gensec_security_ops **ops
  73                         = gensec_use_kerberos_mechs(conn, backends, conn->server_credentials);
  74                 int i, j = 0;
  75                 for (i = 0; ops && ops[i]; i++) {
  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         enum ldb_scope scope = LDB_SCOPE_DEFAULT;
 161         const char **attrs = NULL;
 162         const char *scope_str, *errstr = NULL;
 163         int success_limit = 1;
 164         int result = -1;
 165         int ldb_ret = -1;
 166         int i, j;
 167
 168         DEBUG(10, ("SearchRequest"));
 169         DEBUGADD(10, (" basedn: %s", req->basedn));
 170         DEBUGADD(10, (" filter: %s\n", ldb_filter_from_tree(call, req->tree)));
 171
 172         local_ctx = talloc_new(call);
 173         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 174
 175         basedn = ldb_dn_new(local_ctx, samdb, req->basedn);
 176         VALID_DN_SYNTAX(basedn, 0);
 177
 178         DEBUG(10, ("SearchRequest: basedn: [%s]\n", req->basedn));
 179         DEBUG(10, ("SearchRequest: filter: [%s]\n", ldb_filter_from_tree(call, req->tree)));
 180
 181         switch (req->scope) {
 182                 case LDAP_SEARCH_SCOPE_BASE:
 183                         scope_str = "BASE";
 184                         scope = LDB_SCOPE_BASE;
 185                         success_limit = 0;
 186                         break;
 187                 case LDAP_SEARCH_SCOPE_SINGLE:
 188                         scope_str = "ONE";
 189                         scope = LDB_SCOPE_ONELEVEL;
 190                         success_limit = 0;
 191                         break;
 192                 case LDAP_SEARCH_SCOPE_SUB:
 193                         scope_str = "SUB";
 194                         scope = LDB_SCOPE_SUBTREE;
 195                         success_limit = 0;
 196                         break;
 197                 default:
 198                         result = LDAP_PROTOCOL_ERROR;
 199                         errstr = "Invalid scope";
 200                         goto reply;
 201         }
 202         DEBUG(10,("SearchRequest: scope: [%s]\n", scope_str));
 203
 204         if (req->num_attributes >= 1) {
 205                 attrs = talloc_array(local_ctx, const char *, req->num_attributes+1);
 206                 NT_STATUS_HAVE_NO_MEMORY(attrs);
 207
 208                 for (i=0; i < req->num_attributes; i++) {
 209                         DEBUG(10,("SearchRequest: attrs: [%s]\n",req->attributes[i]));
 210                         attrs[i] = req->attributes[i];
 211                 }
 212                 attrs[i] = NULL;
 213         }
 214
 215         DEBUG(5,("ldb_request %s dn=%s filter=%s\n",
 216                  scope_str, req->basedn, ldb_filter_from_tree(call, req->tree)));
 217
 218         lreq = talloc(local_ctx, struct ldb_request);
 219         NT_STATUS_HAVE_NO_MEMORY(lreq);
 220
 221         lreq->operation = LDB_SEARCH;
 222         lreq->op.search.base = basedn;
 223         lreq->op.search.scope = scope;
 224         lreq->op.search.tree = req->tree;
 225         lreq->op.search.attrs = attrs;
 226
 227         lreq->controls = call->request->controls;
 228
 229         if (call->conn->global_catalog) {
 230                 struct ldb_control *search_control = ldb_request_get_control(lreq, LDB_CONTROL_SEARCH_OPTIONS_OID);
 231
 232                 struct ldb_search_options_control *search_options = NULL;
 233                 if (search_control) {
 234                         search_options = talloc_get_type(search_control->data, struct ldb_search_options_control);
 235                         search_options->search_options |= LDB_SEARCH_OPTION_PHANTOM_ROOT;
 236                 } else {
 237                         search_options = talloc(lreq, struct ldb_search_options_control);
 238                         NT_STATUS_HAVE_NO_MEMORY(search_options);
 239                         search_options->search_options = LDB_SEARCH_OPTION_PHANTOM_ROOT;
 240                         ldb_request_add_control(lreq, LDB_CONTROL_SEARCH_OPTIONS_OID, false, search_options);
 241                 }
 242         }
 243
 244         res = talloc_zero(lreq, struct ldb_result);
 245         NT_STATUS_HAVE_NO_MEMORY(res);
 246
 247         lreq->context = res;
 248         lreq->callback = ldb_search_default_callback;
 249
 250         /* Copy the timeout from the incoming call */
 251         ldb_set_timeout(samdb, lreq, req->timelimit);
 252
 253         ldb_ret = ldb_request(samdb, lreq);
 254
 255         if (ldb_ret != LDB_SUCCESS) {
 256                 goto reply;
 257         }
 258
 259         ldb_ret = ldb_wait(lreq->handle, LDB_WAIT_ALL);
 260
 261         if (ldb_ret == LDB_SUCCESS) {
 262                 for (i = 0; i < res->count; i++) {
 263                         ent_r = ldapsrv_init_reply(call, LDAP_TAG_SearchResultEntry);
 264                         NT_STATUS_HAVE_NO_MEMORY(ent_r);
 265
 266                         /* Better to have the whole message kept here,
 267                          * than to find someone further up didn't put
 268                          * a value in the right spot in the talloc tree */
 269                         talloc_steal(ent_r, res->msgs[i]);
 270
 271                         ent = &ent_r->msg->r.SearchResultEntry;
 272                         ent->dn = ldb_dn_alloc_linearized(ent_r, res->msgs[i]->dn);
 273                         ent->num_attributes = 0;
 274                         ent->attributes = NULL;
 275                         if (res->msgs[i]->num_elements == 0) {
 276                                 goto queue_reply;
 277                         }
 278                         ent->num_attributes = res->msgs[i]->num_elements;
 279                         ent->attributes = talloc_array(ent_r, struct ldb_message_element, ent->num_attributes);
 280                         NT_STATUS_HAVE_NO_MEMORY(ent->attributes);
 281                         for (j=0; j < ent->num_attributes; j++) {
 282                                 ent->attributes[j].name = talloc_steal(ent->attributes, res->msgs[i]->elements[j].name);
 283                                 ent->attributes[j].num_values = 0;
 284                                 ent->attributes[j].values = NULL;
 285                                 if (req->attributesonly && (res->msgs[i]->elements[j].num_values == 0)) {
 286                                         continue;
 287                                 }
 288                                 ent->attributes[j].num_values = res->msgs[i]->elements[j].num_values;
 289                                 ent->attributes[j].values = res->msgs[i]->elements[j].values;
 290                                 talloc_steal(ent->attributes, res->msgs[i]->elements[j].values);
 291                         }
 292 queue_reply:
 293                         ldapsrv_queue_reply(call, ent_r);
 294                 }
 295         }
 296
 297 reply:
 298         done_r = ldapsrv_init_reply(call, LDAP_TAG_SearchResultDone);
 299         NT_STATUS_HAVE_NO_MEMORY(done_r);
 300
 301         done = &done_r->msg->r.SearchResultDone;
 302         done->dn = NULL;
 303         done->referral = NULL;
 304
 305         if (result != -1) {
 306         } else if (ldb_ret == LDB_SUCCESS) {
 307                 if (res->count >= success_limit) {
 308                         DEBUG(10,("SearchRequest: results: [%d]\n", res->count));
 309                         result = LDAP_SUCCESS;
 310                         errstr = NULL;
 311                 }
 312                 if (res->controls) {
 313                         done_r->msg->controls = res->controls;
 314                         talloc_steal(done_r, res->controls);
 315                 }
 316         } else {
 317                 DEBUG(10,("SearchRequest: error\n"));
 318                 result = map_ldb_error(samdb, ldb_ret, &errstr);
 319         }
 320
 321         done->resultcode = result;
 322         done->errormessage = (errstr?talloc_strdup(done_r, errstr):NULL);
 323
 324         talloc_free(local_ctx);
 325
 326         ldapsrv_queue_reply(call, done_r);
 327         return NT_STATUS_OK;
 328 }
 329
 330 static NTSTATUS ldapsrv_ModifyRequest(struct ldapsrv_call *call)
 331 {
 332         struct ldap_ModifyRequest *req = &call->request->r.ModifyRequest;
 333         struct ldap_Result *modify_result;
 334         struct ldapsrv_reply *modify_reply;
 335         void *local_ctx;
 336         struct ldb_context *samdb = call->conn->ldb;
 337         struct ldb_message *msg = NULL;
 338         struct ldb_dn *dn;
 339         const char *errstr = NULL;
 340         int result = LDAP_SUCCESS;
 341         int ldb_ret;
 342         int i,j;
 343
 344         DEBUG(10, ("ModifyRequest"));
 345         DEBUGADD(10, (" dn: %s", req->dn));
 346
 347         local_ctx = talloc_named(call, 0, "ModifyRequest local memory context");
 348         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 349
 350         dn = ldb_dn_new(local_ctx, samdb, req->dn);
 351         VALID_DN_SYNTAX(dn, 1);
 352
 353         DEBUG(10, ("ModifyRequest: dn: [%s]\n", req->dn));
 354
 355         msg = talloc(local_ctx, struct ldb_message);
 356         NT_STATUS_HAVE_NO_MEMORY(msg);
 357
 358         msg->dn = dn;
 359         msg->num_elements = 0;
 360         msg->elements = NULL;
 361
 362         if (req->num_mods > 0) {
 363                 msg->num_elements = req->num_mods;
 364                 msg->elements = talloc_array(msg, struct ldb_message_element, req->num_mods);
 365                 NT_STATUS_HAVE_NO_MEMORY(msg->elements);
 366
 367                 for (i=0; i < msg->num_elements; i++) {
 368                         msg->elements[i].name = discard_const_p(char, req->mods[i].attrib.name);
 369                         msg->elements[i].num_values = 0;
 370                         msg->elements[i].values = NULL;
 371
 372                         switch (req->mods[i].type) {
 373                         default:
 374                                 result = LDAP_PROTOCOL_ERROR;
 375                                 errstr = "Invalid LDAP_MODIFY_* type";
 376                                 goto reply;
 377                         case LDAP_MODIFY_ADD:
 378                                 msg->elements[i].flags = LDB_FLAG_MOD_ADD;
 379                                 break;
 380                         case LDAP_MODIFY_DELETE:
 381                                 msg->elements[i].flags = LDB_FLAG_MOD_DELETE;
 382                                 break;
 383                         case LDAP_MODIFY_REPLACE:
 384                                 msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
 385                                 break;
 386                         }
 387
 388                         msg->elements[i].num_values = req->mods[i].attrib.num_values;
 389                         if (msg->elements[i].num_values > 0) {
 390                                 msg->elements[i].values = talloc_array(msg->elements, struct ldb_val,
 391                                                                        msg->elements[i].num_values);
 392                                 NT_STATUS_HAVE_NO_MEMORY(msg->elements[i].values);
 393
 394                                 for (j=0; j < msg->elements[i].num_values; j++) {
 395                                         if (!(req->mods[i].attrib.values[j].length > 0)) {
 396                                                 result = LDAP_OTHER;
 397                                                 errstr = "Empty attribute values are not allowed";
 398                                                 goto reply;
 399                                         }
 400                                         msg->elements[i].values[j].length = req->mods[i].attrib.values[j].length;
 401                                         msg->elements[i].values[j].data = req->mods[i].attrib.values[j].data;
 402                                 }
 403                         }
 404                 }
 405         } else {
 406                 result = LDAP_OTHER;
 407                 errstr = "No mods are not allowed";
 408                 goto reply;
 409         }
 410
 411 reply:
 412         modify_reply = ldapsrv_init_reply(call, LDAP_TAG_ModifyResponse);
 413         NT_STATUS_HAVE_NO_MEMORY(modify_reply);
 414
 415         if (result == LDAP_SUCCESS) {
 416                 ldb_ret = ldb_modify(samdb, msg);
 417                 result = map_ldb_error(samdb, ldb_ret, &errstr);
 418         }
 419
 420         modify_result = &modify_reply->msg->r.AddResponse;
 421         modify_result->dn = NULL;
 422         modify_result->resultcode = result;
 423         modify_result->errormessage = (errstr?talloc_strdup(modify_reply, errstr):NULL);
 424         modify_result->referral = NULL;
 425
 426         talloc_free(local_ctx);
 427
 428         ldapsrv_queue_reply(call, modify_reply);
 429         return NT_STATUS_OK;
 430
 431 }
 432
 433 static NTSTATUS ldapsrv_AddRequest(struct ldapsrv_call *call)
 434 {
 435         struct ldap_AddRequest *req = &call->request->r.AddRequest;
 436         struct ldap_Result *add_result;
 437         struct ldapsrv_reply *add_reply;
 438         void *local_ctx;
 439         struct ldb_context *samdb = call->conn->ldb;
 440         struct ldb_message *msg = NULL;
 441         struct ldb_dn *dn;
 442         const char *errstr = NULL;
 443         int result = LDAP_SUCCESS;
 444         int ldb_ret;
 445         int i,j;
 446
 447         DEBUG(10, ("AddRequest"));
 448         DEBUGADD(10, (" dn: %s", req->dn));
 449
 450         local_ctx = talloc_named(call, 0, "AddRequest local memory context");
 451         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 452
 453         dn = ldb_dn_new(local_ctx, samdb, req->dn);
 454         VALID_DN_SYNTAX(dn,1);
 455
 456         DEBUG(10, ("AddRequest: dn: [%s]\n", req->dn));
 457
 458         msg = talloc(local_ctx, struct ldb_message);
 459         NT_STATUS_HAVE_NO_MEMORY(msg);
 460
 461         msg->dn = dn;
 462         msg->num_elements = 0;
 463         msg->elements = NULL;
 464
 465         if (req->num_attributes > 0) {
 466                 msg->num_elements = req->num_attributes;
 467                 msg->elements = talloc_array(msg, struct ldb_message_element, msg->num_elements);
 468                 NT_STATUS_HAVE_NO_MEMORY(msg->elements);
 469
 470                 for (i=0; i < msg->num_elements; i++) {
 471                         msg->elements[i].name = discard_const_p(char, req->attributes[i].name);
 472                         msg->elements[i].flags = 0;
 473                         msg->elements[i].num_values = 0;
 474                         msg->elements[i].values = NULL;
 475
 476                         if (req->attributes[i].num_values > 0) {
 477                                 msg->elements[i].num_values = req->attributes[i].num_values;
 478                                 msg->elements[i].values = talloc_array(msg->elements, struct ldb_val,
 479                                                                        msg->elements[i].num_values);
 480                                 NT_STATUS_HAVE_NO_MEMORY(msg->elements[i].values);
 481
 482                                 for (j=0; j < msg->elements[i].num_values; j++) {
 483                                         if (!(req->attributes[i].values[j].length > 0)) {
 484                                                 result = LDAP_OTHER;
 485                                                 errstr = "Empty attribute values are not allowed";
 486                                                 goto reply;
 487                                         }
 488                                         msg->elements[i].values[j].length = req->attributes[i].values[j].length;
 489                                         msg->elements[i].values[j].data = req->attributes[i].values[j].data;
 490                                 }
 491                         } else {
 492                                 result = LDAP_OTHER;
 493                                 errstr = "No attribute values are not allowed";
 494                                 goto reply;
 495                         }
 496                 }
 497         } else {
 498                 result = LDAP_OTHER;
 499                 errstr = "No attributes are not allowed";
 500                 goto reply;
 501         }
 502
 503 reply:
 504         add_reply = ldapsrv_init_reply(call, LDAP_TAG_AddResponse);
 505         NT_STATUS_HAVE_NO_MEMORY(add_reply);
 506
 507         if (result == LDAP_SUCCESS) {
 508                 ldb_ret = ldb_add(samdb, msg);
 509                 result = map_ldb_error(samdb, ldb_ret, &errstr);
 510         }
 511
 512         add_result = &add_reply->msg->r.AddResponse;
 513         add_result->dn = NULL;
 514         add_result->resultcode = result;
 515         add_result->errormessage = (errstr?talloc_strdup(add_reply,errstr):NULL);
 516         add_result->referral = NULL;
 517
 518         talloc_free(local_ctx);
 519
 520         ldapsrv_queue_reply(call, add_reply);
 521         return NT_STATUS_OK;
 522
 523 }
 524
 525 static NTSTATUS ldapsrv_DelRequest(struct ldapsrv_call *call)
 526 {
 527         struct ldap_DelRequest *req = &call->request->r.DelRequest;
 528         struct ldap_Result *del_result;
 529         struct ldapsrv_reply *del_reply;
 530         void *local_ctx;
 531         struct ldb_context *samdb = call->conn->ldb;
 532         struct ldb_dn *dn;
 533         const char *errstr = NULL;
 534         int result = LDAP_SUCCESS;
 535         int ldb_ret;
 536
 537         DEBUG(10, ("DelRequest"));
 538         DEBUGADD(10, (" dn: %s", req->dn));
 539
 540         local_ctx = talloc_named(call, 0, "DelRequest local memory context");
 541         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 542
 543         dn = ldb_dn_new(local_ctx, samdb, req->dn);
 544         VALID_DN_SYNTAX(dn,1);
 545
 546         DEBUG(10, ("DelRequest: dn: [%s]\n", req->dn));
 547
 548 reply:
 549         del_reply = ldapsrv_init_reply(call, LDAP_TAG_DelResponse);
 550         NT_STATUS_HAVE_NO_MEMORY(del_reply);
 551
 552         if (result == LDAP_SUCCESS) {
 553                 ldb_ret = ldb_delete(samdb, dn);
 554                 result = map_ldb_error(samdb, ldb_ret, &errstr);
 555         }
 556
 557         del_result = &del_reply->msg->r.DelResponse;
 558         del_result->dn = NULL;
 559         del_result->resultcode = result;
 560         del_result->errormessage = (errstr?talloc_strdup(del_reply,errstr):NULL);
 561         del_result->referral = NULL;
 562
 563         talloc_free(local_ctx);
 564
 565         ldapsrv_queue_reply(call, del_reply);
 566         return NT_STATUS_OK;
 567 }
 568
 569 static NTSTATUS ldapsrv_ModifyDNRequest(struct ldapsrv_call *call)
 570 {
 571         struct ldap_ModifyDNRequest *req = &call->request->r.ModifyDNRequest;
 572         struct ldap_Result *modifydn;
 573         struct ldapsrv_reply *modifydn_r;
 574         void *local_ctx;
 575         struct ldb_context *samdb = call->conn->ldb;
 576         struct ldb_dn *olddn, *newdn=NULL, *newrdn;
 577         struct ldb_dn *parentdn = NULL;
 578         const char *errstr = NULL;
 579         int result = LDAP_SUCCESS;
 580         int ldb_ret;
 581
 582         DEBUG(10, ("ModifyDNRequrest"));
 583         DEBUGADD(10, (" dn: %s", req->dn));
 584         DEBUGADD(10, (" newrdn: %s", req->newrdn));
 585
 586         local_ctx = talloc_named(call, 0, "ModifyDNRequest local memory context");
 587         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 588
 589         olddn = ldb_dn_new(local_ctx, samdb, req->dn);
 590         VALID_DN_SYNTAX(olddn, 2);
 591
 592         newrdn = ldb_dn_new(local_ctx, samdb, req->newrdn);
 593         VALID_DN_SYNTAX(newrdn, 1);
 594
 595         DEBUG(10, ("ModifyDNRequest: olddn: [%s]\n", req->dn));
 596         DEBUG(10, ("ModifyDNRequest: newrdn: [%s]\n", req->newrdn));
 597
 598         /* we can't handle the rename if we should not remove the old dn */
 599         if (!req->deleteolddn) {
 600                 result = LDAP_UNWILLING_TO_PERFORM;
 601                 errstr = "Old RDN must be deleted";
 602                 goto reply;
 603         }
 604
 605         if (req->newsuperior) {
 606                 parentdn = ldb_dn_new(local_ctx, samdb, req->newsuperior);
 607                 VALID_DN_SYNTAX(parentdn, 0);
 608                 DEBUG(10, ("ModifyDNRequest: newsuperior: [%s]\n", req->newsuperior));
 609
 610                 if (ldb_dn_get_comp_num(parentdn) < 1) {
 611                         result = LDAP_AFFECTS_MULTIPLE_DSAS;
 612                         errstr = "Error new Superior DN invalid";
 613                         goto reply;
 614                 }
 615         }
 616
 617         if (!parentdn) {
 618                 parentdn = ldb_dn_get_parent(local_ctx, olddn);
 619                 NT_STATUS_HAVE_NO_MEMORY(parentdn);
 620         }
 621
 622         if ( ! ldb_dn_add_child_fmt(parentdn,
 623                                 "%s=%s",
 624                                 ldb_dn_get_rdn_name(newrdn),
 625                                 (char *)ldb_dn_get_rdn_val(newrdn)->data)) {
 626                 result = LDAP_OTHER;
 627                 goto reply;
 628         }
 629         newdn = parentdn;
 630
 631 reply:
 632         modifydn_r = ldapsrv_init_reply(call, LDAP_TAG_ModifyDNResponse);
 633         NT_STATUS_HAVE_NO_MEMORY(modifydn_r);
 634
 635         if (result == LDAP_SUCCESS) {
 636                 ldb_ret = ldb_rename(samdb, olddn, newdn);
 637                 result = map_ldb_error(samdb, ldb_ret, &errstr);
 638         }
 639
 640         modifydn = &modifydn_r->msg->r.ModifyDNResponse;
 641         modifydn->dn = NULL;
 642         modifydn->resultcode = result;
 643         modifydn->errormessage = (errstr?talloc_strdup(modifydn_r,errstr):NULL);
 644         modifydn->referral = NULL;
 645
 646         talloc_free(local_ctx);
 647
 648         ldapsrv_queue_reply(call, modifydn_r);
 649         return NT_STATUS_OK;
 650 }
 651
 652 static NTSTATUS ldapsrv_CompareRequest(struct ldapsrv_call *call)
 653 {
 654         struct ldap_CompareRequest *req = &call->request->r.CompareRequest;
 655         struct ldap_Result *compare;
 656         struct ldapsrv_reply *compare_r;
 657         void *local_ctx;
 658         struct ldb_context *samdb = call->conn->ldb;
 659         struct ldb_result *res = NULL;
 660         struct ldb_dn *dn;
 661         const char *attrs[1];
 662         const char *errstr = NULL;
 663         const char *filter = NULL;
 664         int result = LDAP_SUCCESS;
 665         int ldb_ret;
 666
 667         DEBUG(10, ("CompareRequest"));
 668         DEBUGADD(10, (" dn: %s", req->dn));
 669
 670         local_ctx = talloc_named(call, 0, "CompareRequest local_memory_context");
 671         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 672
 673         dn = ldb_dn_new(local_ctx, samdb, req->dn);
 674         VALID_DN_SYNTAX(dn, 1);
 675
 676         DEBUG(10, ("CompareRequest: dn: [%s]\n", req->dn));
 677         filter = talloc_asprintf(local_ctx, "(%s=%*s)", req->attribute,
 678                                  (int)req->value.length, req->value.data);
 679         NT_STATUS_HAVE_NO_MEMORY(filter);
 680
 681         DEBUGADD(10, ("CompareRequest: attribute: [%s]\n", filter));
 682
 683         attrs[0] = NULL;
 684
 685 reply:
 686         compare_r = ldapsrv_init_reply(call, LDAP_TAG_CompareResponse);
 687         NT_STATUS_HAVE_NO_MEMORY(compare_r);
 688
 689         if (result == LDAP_SUCCESS) {
 690                 ldb_ret = ldb_search(samdb, dn, LDB_SCOPE_BASE, filter, attrs, &res);
 691                 talloc_steal(local_ctx, res);
 692                 if (ldb_ret != LDB_SUCCESS) {
 693                         result = map_ldb_error(samdb, ldb_ret, &errstr);
 694                         DEBUG(10,("CompareRequest: error: %s\n", errstr));
 695                 } else if (res->count == 0) {
 696                         DEBUG(10,("CompareRequest: doesn't matched\n"));
 697                         result = LDAP_COMPARE_FALSE;
 698                         errstr = NULL;
 699                 } else if (res->count == 1) {
 700                         DEBUG(10,("CompareRequest: matched\n"));
 701                         result = LDAP_COMPARE_TRUE;
 702                         errstr = NULL;
 703                 } else if (res->count > 1) {
 704                         result = LDAP_OTHER;
 705                         errstr = "too many objects match";
 706                         DEBUG(10,("CompareRequest: %d results: %s\n", res->count, errstr));
 707                 }
 708         }
 709
 710         compare = &compare_r->msg->r.CompareResponse;
 711         compare->dn = NULL;
 712         compare->resultcode = result;
 713         compare->errormessage = (errstr?talloc_strdup(compare_r,errstr):NULL);
 714         compare->referral = NULL;
 715
 716         talloc_free(local_ctx);
 717
 718         ldapsrv_queue_reply(call, compare_r);
 719         return NT_STATUS_OK;
 720 }
 721
 722 static NTSTATUS ldapsrv_AbandonRequest(struct ldapsrv_call *call)
 723 {
 724 /*      struct ldap_AbandonRequest *req = &call->request.r.AbandonRequest;*/
 725         DEBUG(10, ("AbandonRequest\n"));
 726         return NT_STATUS_OK;
 727 }
 728
 729 NTSTATUS ldapsrv_do_call(struct ldapsrv_call *call)
 730 {
 731         int i;
 732         struct ldap_message *msg = call->request;
 733         /* Check for undecoded critical extensions */
 734         for (i=0; msg->controls && msg->controls[i]; i++) {
 735                 if (!msg->controls_decoded[i] &&
 736                     msg->controls[i]->critical) {
 737                         DEBUG(3, ("ldapsrv_do_call: Critical extension %s is not known to this server\n",
 738                                   msg->controls[i]->oid));
 739                         return ldapsrv_unwilling(call, LDAP_UNAVAILABLE_CRITICAL_EXTENSION);
 740                 }
 741         }
 742
 743         switch(call->request->type) {
 744         case LDAP_TAG_BindRequest:
 745                 return ldapsrv_BindRequest(call);
 746         case LDAP_TAG_UnbindRequest:
 747                 return ldapsrv_UnbindRequest(call);
 748         case LDAP_TAG_SearchRequest:
 749                 return ldapsrv_SearchRequest(call);
 750         case LDAP_TAG_ModifyRequest:
 751                 return ldapsrv_ModifyRequest(call);
 752         case LDAP_TAG_AddRequest:
 753                 return ldapsrv_AddRequest(call);
 754         case LDAP_TAG_DelRequest:
 755                 return ldapsrv_DelRequest(call);
 756         case LDAP_TAG_ModifyDNRequest:
 757                 return ldapsrv_ModifyDNRequest(call);
 758         case LDAP_TAG_CompareRequest:
 759                 return ldapsrv_CompareRequest(call);
 760         case LDAP_TAG_AbandonRequest:
 761                 return ldapsrv_AbandonRequest(call);
 762         case LDAP_TAG_ExtendedRequest:
 763                 return ldapsrv_ExtendedRequest(call);
 764         default:
 765                 return ldapsrv_unwilling(call, 2);
 766         }
 767 }