source4/ldap_server/ldap_backend.c

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