source4/ldap_server/ldap_backend.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    LDAP server
   4    Copyright (C) Stefan Metzmacher 2004
   5    Copyright (C) Matthias Dieter Wallnöfer 2009
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "includes.h"
  22 #include "ldap_server/ldap_server.h"
  23 #include "../lib/util/dlinklist.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                 map_ldb_error(local_ctx, LDB_ERR_INVALID_DN_SYNTAX, &errstr);\
  38                 goto reply;\
  39         }\
  40 } while(0)
  41
  42 static int map_ldb_error(TALLOC_CTX *mem_ctx, int ldb_err,
  43         const char **errstring)
  44 {
  45         WERROR err;
  46
  47         switch (ldb_err) {
  48         case LDB_SUCCESS:
  49                 err = WERR_OK;
  50         break;
  51         case LDB_ERR_OPERATIONS_ERROR:
  52                 err = WERR_DS_OPERATIONS_ERROR;
  53         break;
  54         case LDB_ERR_PROTOCOL_ERROR:
  55                 err = WERR_DS_PROTOCOL_ERROR;
  56         break;
  57         case LDB_ERR_TIME_LIMIT_EXCEEDED:
  58                 err = WERR_DS_TIMELIMIT_EXCEEDED;
  59         break;
  60         case LDB_ERR_SIZE_LIMIT_EXCEEDED:
  61                 err = WERR_DS_SIZE_LIMIT_EXCEEDED;
  62         break;
  63         case LDB_ERR_COMPARE_FALSE:
  64                 err = WERR_DS_COMPARE_FALSE;
  65         break;
  66         case LDB_ERR_COMPARE_TRUE:
  67                 err = WERR_DS_COMPARE_TRUE;
  68         break;
  69         case LDB_ERR_AUTH_METHOD_NOT_SUPPORTED:
  70                 err = WERR_DS_AUTH_METHOD_NOT_SUPPORTED;
  71         break;
  72         case LDB_ERR_STRONG_AUTH_REQUIRED:
  73                 err = WERR_DS_STRONG_AUTH_REQUIRED;
  74         break;
  75         case LDB_ERR_REFERRAL:
  76                 err = WERR_DS_REFERRAL;
  77         break;
  78         case LDB_ERR_ADMIN_LIMIT_EXCEEDED:
  79                 err = WERR_DS_ADMIN_LIMIT_EXCEEDED;
  80         break;
  81         case LDB_ERR_UNSUPPORTED_CRITICAL_EXTENSION:
  82                 err = WERR_DS_UNAVAILABLE_CRIT_EXTENSION;
  83         break;
  84         case LDB_ERR_CONFIDENTIALITY_REQUIRED:
  85                 err = WERR_DS_CONFIDENTIALITY_REQUIRED;
  86         break;
  87         case LDB_ERR_SASL_BIND_IN_PROGRESS:
  88                 err = WERR_DS_BUSY;
  89         break;
  90         case LDB_ERR_NO_SUCH_ATTRIBUTE:
  91                 err = WERR_DS_NO_ATTRIBUTE_OR_VALUE;
  92         break;
  93         case LDB_ERR_UNDEFINED_ATTRIBUTE_TYPE:
  94                 err = WERR_DS_ATTRIBUTE_TYPE_UNDEFINED;
  95         break;
  96         case LDB_ERR_INAPPROPRIATE_MATCHING:
  97                 err = WERR_DS_INAPPROPRIATE_MATCHING;
  98         break;
  99         case LDB_ERR_CONSTRAINT_VIOLATION:
 100                 err = WERR_DS_CONSTRAINT_VIOLATION;
 101         break;
 102         case LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS:
 103                 err = WERR_DS_ATTRIBUTE_OR_VALUE_EXISTS;
 104         break;
 105         case LDB_ERR_INVALID_ATTRIBUTE_SYNTAX:
 106                 err = WERR_DS_INVALID_ATTRIBUTE_SYNTAX;
 107         break;
 108         case LDB_ERR_NO_SUCH_OBJECT:
 109                 err = WERR_DS_NO_SUCH_OBJECT;
 110         break;
 111         case LDB_ERR_ALIAS_PROBLEM:
 112                 err = WERR_DS_ALIAS_PROBLEM;
 113         break;
 114         case LDB_ERR_INVALID_DN_SYNTAX:
 115                 err = WERR_DS_INVALID_DN_SYNTAX;
 116         break;
 117         case LDB_ERR_ALIAS_DEREFERENCING_PROBLEM:
 118                 err = WERR_DS_ALIAS_DEREF_PROBLEM;
 119         break;
 120         case LDB_ERR_INAPPROPRIATE_AUTHENTICATION:
 121                 err = WERR_DS_INAPPROPRIATE_AUTH;
 122         break;
 123         case LDB_ERR_INVALID_CREDENTIALS:
 124                 err = WERR_ACCESS_DENIED;
 125         break;
 126         case LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS:
 127                 err = WERR_DS_INSUFF_ACCESS_RIGHTS;
 128         break;
 129         case LDB_ERR_BUSY:
 130                 err = WERR_DS_BUSY;
 131         break;
 132         case LDB_ERR_UNAVAILABLE:
 133                 err = WERR_DS_UNAVAILABLE;
 134         break;
 135         case LDB_ERR_UNWILLING_TO_PERFORM:
 136                 err = WERR_DS_UNWILLING_TO_PERFORM;
 137         break;
 138         case LDB_ERR_LOOP_DETECT:
 139                 err = WERR_DS_LOOP_DETECT;
 140         break;
 141         case LDB_ERR_NAMING_VIOLATION:
 142                 err = WERR_DS_NAMING_VIOLATION;
 143         break;
 144         case LDB_ERR_OBJECT_CLASS_VIOLATION:
 145                 err = WERR_DS_OBJ_CLASS_VIOLATION;
 146         break;
 147         case LDB_ERR_NOT_ALLOWED_ON_NON_LEAF:
 148                 err = WERR_DS_CANT_ON_NON_LEAF;
 149         break;
 150         case LDB_ERR_NOT_ALLOWED_ON_RDN:
 151                 err = WERR_DS_CANT_ON_RDN;
 152         break;
 153         case LDB_ERR_ENTRY_ALREADY_EXISTS:
 154                 err = WERR_DS_OBJ_STRING_NAME_EXISTS;
 155         break;
 156         case LDB_ERR_OBJECT_CLASS_MODS_PROHIBITED:
 157                 err = WERR_DS_CANT_MOD_OBJ_CLASS;
 158         break;
 159         case LDB_ERR_AFFECTS_MULTIPLE_DSAS:
 160                 err = WERR_DS_AFFECTS_MULTIPLE_DSAS;
 161         break;
 162         default:
 163                 err = WERR_DS_GENERIC_ERROR;
 164         break;
 165         }
 166
 167         *errstring = talloc_asprintf(mem_ctx, "%08x: %s", W_ERROR_V(err),
 168                 ldb_strerror(ldb_err));
 169
 170         /* result is 1:1 for now */
 171         return ldb_err;
 172 }
 173 /* create and execute a modify request */
 174 static int ldb_mod_req_with_controls(struct ldb_context *ldb,
 175                                      const struct ldb_message *message,
 176                                      struct ldb_control **controls,
 177                                      void *context)
 178 {
 179         struct ldb_request *req;
 180         int ret;
 181
 182         ret = ldb_msg_sanity_check(ldb, message);
 183         if (ret != LDB_SUCCESS) {
 184                 return ret;
 185         }
 186
 187         ret = ldb_build_mod_req(&req, ldb, ldb,
 188                                         message,
 189                                         controls,
 190                                         context,
 191                                         ldb_modify_default_callback,
 192                                         NULL);
 193
 194         if (ret != LDB_SUCCESS) {
 195                 return ret;
 196         }
 197
 198         ret = ldb_transaction_start(ldb);
 199         if (ret != LDB_SUCCESS) {
 200                 return ret;
 201         }
 202
 203         ret = ldb_request(ldb, req);
 204         if (ret == LDB_SUCCESS) {
 205                 ret = ldb_wait(req->handle, LDB_WAIT_ALL);
 206         }
 207
 208         if (ret == LDB_SUCCESS) {
 209                 ret = ldb_transaction_commit(ldb);
 210         }
 211         else {
 212                 ldb_transaction_cancel(ldb);
 213         }
 214
 215         talloc_free(req);
 216         return ret;
 217 }
 218
 219 /*
 220   connect to the sam database
 221 */
 222 NTSTATUS ldapsrv_backend_Init(struct ldapsrv_connection *conn)
 223 {
 224         conn->ldb = ldb_wrap_connect(conn,
 225                                      conn->connection->event.ctx,
 226                                      conn->lp_ctx,
 227                                      lp_sam_url(conn->lp_ctx),
 228                                      conn->session_info,
 229                                      samdb_credentials(conn->connection->event.ctx, conn->lp_ctx),
 230                                      conn->global_catalog ? LDB_FLG_RDONLY : 0);
 231         if (conn->ldb == NULL) {
 232                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
 233         }
 234
 235         if (conn->server_credentials) {
 236                 char **sasl_mechs = NULL;
 237                 struct gensec_security_ops **backends = gensec_security_all();
 238                 struct gensec_security_ops **ops
 239                         = gensec_use_kerberos_mechs(conn, backends, conn->server_credentials);
 240                 unsigned int i, j = 0;
 241                 for (i = 0; ops && ops[i]; i++) {
 242                         if (!lp_parm_bool(conn->lp_ctx,  NULL, "gensec", ops[i]->name, ops[i]->enabled))
 243                                 continue;
 244
 245                         if (ops[i]->sasl_name && ops[i]->server_start) {
 246                                 char *sasl_name = talloc_strdup(conn, ops[i]->sasl_name);
 247
 248                                 if (!sasl_name) {
 249                                         return NT_STATUS_NO_MEMORY;
 250                                 }
 251                                 sasl_mechs = talloc_realloc(conn, sasl_mechs, char *, j + 2);
 252                                 if (!sasl_mechs) {
 253                                         return NT_STATUS_NO_MEMORY;
 254                                 }
 255                                 sasl_mechs[j] = sasl_name;
 256                                 talloc_steal(sasl_mechs, sasl_name);
 257                                 sasl_mechs[j+1] = NULL;
 258                                 j++;
 259                         }
 260                 }
 261                 talloc_unlink(conn, ops);
 262                 ldb_set_opaque(conn->ldb, "supportedSASLMechanims", sasl_mechs);
 263         }
 264
 265         return NT_STATUS_OK;
 266 }
 267
 268 struct ldapsrv_reply *ldapsrv_init_reply(struct ldapsrv_call *call, uint8_t type)
 269 {
 270         struct ldapsrv_reply *reply;
 271
 272         reply = talloc(call, struct ldapsrv_reply);
 273         if (!reply) {
 274                 return NULL;
 275         }
 276         reply->msg = talloc(reply, struct ldap_message);
 277         if (reply->msg == NULL) {
 278                 talloc_free(reply);
 279                 return NULL;
 280         }
 281
 282         reply->msg->messageid = call->request->messageid;
 283         reply->msg->type = type;
 284         reply->msg->controls = NULL;
 285
 286         return reply;
 287 }
 288
 289 void ldapsrv_queue_reply(struct ldapsrv_call *call, struct ldapsrv_reply *reply)
 290 {
 291         DLIST_ADD_END(call->replies, reply, struct ldapsrv_reply *);
 292 }
 293
 294 static NTSTATUS ldapsrv_unwilling(struct ldapsrv_call *call, int error)
 295 {
 296         struct ldapsrv_reply *reply;
 297         struct ldap_ExtendedResponse *r;
 298
 299         DEBUG(10,("Unwilling type[%d] id[%d]\n", call->request->type, call->request->messageid));
 300
 301         reply = ldapsrv_init_reply(call, LDAP_TAG_ExtendedResponse);
 302         if (!reply) {
 303                 return NT_STATUS_NO_MEMORY;
 304         }
 305
 306         r = &reply->msg->r.ExtendedResponse;
 307         r->response.resultcode = error;
 308         r->response.dn = NULL;
 309         r->response.errormessage = NULL;
 310         r->response.referral = NULL;
 311         r->oid = NULL;
 312         r->value = NULL;
 313
 314         ldapsrv_queue_reply(call, reply);
 315         return NT_STATUS_OK;
 316 }
 317
 318 int ldb_add_with_context(struct ldb_context *ldb,
 319                          const struct ldb_message *message,
 320                          void *context)
 321 {
 322         struct ldb_request *req;
 323         int ret;
 324
 325         ret = ldb_msg_sanity_check(ldb, message);
 326         if (ret != LDB_SUCCESS) {
 327                 return ret;
 328         }
 329
 330         ret = ldb_build_add_req(&req, ldb, ldb,
 331                                         message,
 332                                         NULL,
 333                                         context,
 334                                         ldb_modify_default_callback,
 335                                         NULL);
 336
 337         if (ret != LDB_SUCCESS) return ret;
 338
 339         ret = ldb_transaction_start(ldb);
 340         if (ret != LDB_SUCCESS) {
 341                 return ret;
 342         }
 343
 344         ret = ldb_request(ldb, req);
 345         if (ret == LDB_SUCCESS) {
 346                 ret = ldb_wait(req->handle, LDB_WAIT_ALL);
 347         }
 348
 349         if (ret == LDB_SUCCESS) {
 350                 ret = ldb_transaction_commit(ldb);
 351         }
 352         else {
 353                 ldb_transaction_cancel(ldb);
 354         }
 355
 356         talloc_free(req);
 357         return ret;
 358 }
 359
 360 int ldb_delete_with_context(struct ldb_context *ldb,
 361                             struct ldb_dn *dn,
 362                             void *context)
 363 {
 364         struct ldb_request *req;
 365         int ret;
 366
 367         ret = ldb_build_del_req(&req, ldb, ldb,
 368                                         dn,
 369                                         NULL,
 370                                         context,
 371                                         ldb_modify_default_callback,
 372                                         NULL);
 373
 374         if (ret != LDB_SUCCESS) return ret;
 375
 376         ret = ldb_transaction_start(ldb);
 377         if (ret != LDB_SUCCESS) {
 378                 return ret;
 379         }
 380
 381         ret = ldb_request(ldb, req);
 382         if (ret == LDB_SUCCESS) {
 383                 ret = ldb_wait(req->handle, LDB_WAIT_ALL);
 384         }
 385
 386         if (ret == LDB_SUCCESS) {
 387                 ret = ldb_transaction_commit(ldb);
 388         }
 389         else {
 390                 ldb_transaction_cancel(ldb);
 391         }
 392
 393         talloc_free(req);
 394         return ret;
 395 }
 396
 397 int ldb_rename_with_context(struct ldb_context *ldb,
 398                struct ldb_dn *olddn,
 399                struct ldb_dn *newdn,
 400                void *context)
 401 {
 402         struct ldb_request *req;
 403         int ret;
 404
 405         ret = ldb_build_rename_req(&req, ldb, ldb,
 406                                         olddn,
 407                                         newdn,
 408                                         NULL,
 409                                         context,
 410                                         ldb_modify_default_callback,
 411                                         NULL);
 412
 413         if (ret != LDB_SUCCESS) return ret;
 414
 415         ret = ldb_transaction_start(ldb);
 416         if (ret != LDB_SUCCESS) {
 417                 return ret;
 418         }
 419
 420         ret = ldb_request(ldb, req);
 421         if (ret == LDB_SUCCESS) {
 422                 ret = ldb_wait(req->handle, LDB_WAIT_ALL);
 423         }
 424
 425         if (ret == LDB_SUCCESS) {
 426                 ret = ldb_transaction_commit(ldb);
 427         }
 428         else {
 429                 ldb_transaction_cancel(ldb);
 430         }
 431
 432         talloc_free(req);
 433         return ret;
 434 }
 435
 436 static NTSTATUS ldapsrv_SearchRequest(struct ldapsrv_call *call)
 437 {
 438         struct ldap_SearchRequest *req = &call->request->r.SearchRequest;
 439         struct ldap_SearchResEntry *ent;
 440         struct ldap_Result *done;
 441         struct ldapsrv_reply *ent_r, *done_r;
 442         TALLOC_CTX *local_ctx;
 443         struct ldb_context *samdb = talloc_get_type(call->conn->ldb, struct ldb_context);
 444         struct ldb_dn *basedn;
 445         struct ldb_result *res = NULL;
 446         struct ldb_request *lreq;
 447         struct ldb_control *search_control;
 448         struct ldb_search_options_control *search_options;
 449         struct ldb_control *extended_dn_control;
 450         struct ldb_extended_dn_control *extended_dn_decoded = NULL;
 451         enum ldb_scope scope = LDB_SCOPE_DEFAULT;
 452         const char **attrs = NULL;
 453         const char *scope_str, *errstr = NULL;
 454         int success_limit = 1;
 455         int result = -1;
 456         int ldb_ret = -1;
 457         unsigned int i, j;
 458         int extended_type = 1;
 459
 460         DEBUG(10, ("SearchRequest"));
 461         DEBUGADD(10, (" basedn: %s", req->basedn));
 462         DEBUGADD(10, (" filter: %s\n", ldb_filter_from_tree(call, req->tree)));
 463
 464         local_ctx = talloc_new(call);
 465         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 466
 467         basedn = ldb_dn_new(local_ctx, samdb, req->basedn);
 468         VALID_DN_SYNTAX(basedn);
 469
 470         DEBUG(10, ("SearchRequest: basedn: [%s]\n", req->basedn));
 471         DEBUG(10, ("SearchRequest: filter: [%s]\n", ldb_filter_from_tree(call, req->tree)));
 472
 473         switch (req->scope) {
 474                 case LDAP_SEARCH_SCOPE_BASE:
 475                         scope_str = "BASE";
 476                         scope = LDB_SCOPE_BASE;
 477                         success_limit = 0;
 478                         break;
 479                 case LDAP_SEARCH_SCOPE_SINGLE:
 480                         scope_str = "ONE";
 481                         scope = LDB_SCOPE_ONELEVEL;
 482                         success_limit = 0;
 483                         break;
 484                 case LDAP_SEARCH_SCOPE_SUB:
 485                         scope_str = "SUB";
 486                         scope = LDB_SCOPE_SUBTREE;
 487                         success_limit = 0;
 488                         break;
 489                 default:
 490                         result = LDAP_PROTOCOL_ERROR;
 491                         map_ldb_error(local_ctx, LDB_ERR_PROTOCOL_ERROR,
 492                                 &errstr);
 493                         errstr = talloc_asprintf(local_ctx,
 494                                 "%s. Invalid scope", errstr);
 495                         goto reply;
 496         }
 497         DEBUG(10,("SearchRequest: scope: [%s]\n", scope_str));
 498
 499         if (req->num_attributes >= 1) {
 500                 attrs = talloc_array(local_ctx, const char *, req->num_attributes+1);
 501                 NT_STATUS_HAVE_NO_MEMORY(attrs);
 502
 503                 for (i=0; i < req->num_attributes; i++) {
 504                         DEBUG(10,("SearchRequest: attrs: [%s]\n",req->attributes[i]));
 505                         attrs[i] = req->attributes[i];
 506                 }
 507                 attrs[i] = NULL;
 508         }
 509
 510         DEBUG(5,("ldb_request %s dn=%s filter=%s\n",
 511                  scope_str, req->basedn, ldb_filter_from_tree(call, req->tree)));
 512
 513         res = talloc_zero(local_ctx, struct ldb_result);
 514         NT_STATUS_HAVE_NO_MEMORY(res);
 515
 516         ldb_ret = ldb_build_search_req_ex(&lreq, samdb, local_ctx,
 517                                           basedn, scope,
 518                                           req->tree, attrs,
 519                                           call->request->controls,
 520                                           res, ldb_search_default_callback,
 521                                           NULL);
 522
 523         if (ldb_ret != LDB_SUCCESS) {
 524                 goto reply;
 525         }
 526
 527         if (call->conn->global_catalog) {
 528                 search_control = ldb_request_get_control(lreq, LDB_CONTROL_SEARCH_OPTIONS_OID);
 529
 530                 search_options = NULL;
 531                 if (search_control) {
 532                         search_options = talloc_get_type(search_control->data, struct ldb_search_options_control);
 533                         search_options->search_options |= LDB_SEARCH_OPTION_PHANTOM_ROOT;
 534                 } else {
 535                         search_options = talloc(lreq, struct ldb_search_options_control);
 536                         NT_STATUS_HAVE_NO_MEMORY(search_options);
 537                         search_options->search_options = LDB_SEARCH_OPTION_PHANTOM_ROOT;
 538                         ldb_request_add_control(lreq, LDB_CONTROL_SEARCH_OPTIONS_OID, false, search_options);
 539                 }
 540         }
 541
 542         extended_dn_control = ldb_request_get_control(lreq, LDB_CONTROL_EXTENDED_DN_OID);
 543
 544         if (extended_dn_control) {
 545                 if (extended_dn_control->data) {
 546                         extended_dn_decoded = talloc_get_type(extended_dn_control->data, struct ldb_extended_dn_control);
 547                         extended_type = extended_dn_decoded->type;
 548                 } else {
 549                         extended_type = 0;
 550                 }
 551         }
 552
 553         ldb_set_timeout(samdb, lreq, req->timelimit);
 554
 555         ldb_ret = ldb_request(samdb, lreq);
 556
 557         if (ldb_ret != LDB_SUCCESS) {
 558                 goto reply;
 559         }
 560
 561         ldb_ret = ldb_wait(lreq->handle, LDB_WAIT_ALL);
 562
 563         if (ldb_ret == LDB_SUCCESS) {
 564                 for (i = 0; i < res->count; i++) {
 565                         ent_r = ldapsrv_init_reply(call, LDAP_TAG_SearchResultEntry);
 566                         NT_STATUS_HAVE_NO_MEMORY(ent_r);
 567
 568                         /* Better to have the whole message kept here,
 569                          * than to find someone further up didn't put
 570                          * a value in the right spot in the talloc tree */
 571                         talloc_steal(ent_r, res->msgs[i]);
 572
 573                         ent = &ent_r->msg->r.SearchResultEntry;
 574                         ent->dn = ldb_dn_get_extended_linearized(ent_r, res->msgs[i]->dn, extended_type);
 575                         ent->num_attributes = 0;
 576                         ent->attributes = NULL;
 577                         if (res->msgs[i]->num_elements == 0) {
 578                                 goto queue_reply;
 579                         }
 580                         ent->num_attributes = res->msgs[i]->num_elements;
 581                         ent->attributes = talloc_array(ent_r, struct ldb_message_element, ent->num_attributes);
 582                         NT_STATUS_HAVE_NO_MEMORY(ent->attributes);
 583                         for (j=0; j < ent->num_attributes; j++) {
 584                                 ent->attributes[j].name = res->msgs[i]->elements[j].name;
 585                                 ent->attributes[j].num_values = 0;
 586                                 ent->attributes[j].values = NULL;
 587                                 if (req->attributesonly && (res->msgs[i]->elements[j].num_values == 0)) {
 588                                         continue;
 589                                 }
 590                                 ent->attributes[j].num_values = res->msgs[i]->elements[j].num_values;
 591                                 ent->attributes[j].values = res->msgs[i]->elements[j].values;
 592                         }
 593 queue_reply:
 594                         ldapsrv_queue_reply(call, ent_r);
 595                 }
 596
 597                 /* Send back referrals if they do exist (search operations) */
 598                 if (res->refs != NULL) {
 599                         char **ref;
 600                         struct ldap_SearchResRef *ent_ref;
 601
 602                         for (ref = res->refs; *ref != NULL; ++ref) {
 603                                 ent_r = ldapsrv_init_reply(call, LDAP_TAG_SearchResultReference);
 604                                 NT_STATUS_HAVE_NO_MEMORY(ent_r);
 605
 606                                 /* Better to have the whole referrals kept here,
 607                                  * than to find someone further up didn't put
 608                                  * a value in the right spot in the talloc tree
 609                                  */
 610                                 talloc_steal(ent_r, *ref);
 611
 612                                 ent_ref = &ent_r->msg->r.SearchResultReference;
 613                                 ent_ref->referral = *ref;
 614
 615                                 ldapsrv_queue_reply(call, ent_r);
 616                         }
 617                 }
 618         }
 619
 620 reply:
 621         done_r = ldapsrv_init_reply(call, LDAP_TAG_SearchResultDone);
 622         NT_STATUS_HAVE_NO_MEMORY(done_r);
 623
 624         done = &done_r->msg->r.SearchResultDone;
 625         done->dn = NULL;
 626         done->referral = NULL;
 627
 628         if (result != -1) {
 629         } else if (ldb_ret == LDB_SUCCESS) {
 630                 if (res->count >= success_limit) {
 631                         DEBUG(10,("SearchRequest: results: [%d]\n", res->count));
 632                         result = LDAP_SUCCESS;
 633                         errstr = NULL;
 634                 }
 635                 if (res->controls) {
 636                         done_r->msg->controls = res->controls;
 637                         talloc_steal(done_r, res->controls);
 638                 }
 639         } else {
 640                 DEBUG(10,("SearchRequest: error\n"));
 641                 result = map_ldb_error(local_ctx, ldb_ret, &errstr);
 642         }
 643
 644         done->resultcode = result;
 645         done->errormessage = (errstr?talloc_strdup(done_r, errstr):NULL);
 646
 647         talloc_free(local_ctx);
 648
 649         ldapsrv_queue_reply(call, done_r);
 650         return NT_STATUS_OK;
 651 }
 652
 653 static NTSTATUS ldapsrv_ModifyRequest(struct ldapsrv_call *call)
 654 {
 655         struct ldap_ModifyRequest *req = &call->request->r.ModifyRequest;
 656         struct ldap_Result *modify_result;
 657         struct ldapsrv_reply *modify_reply;
 658         TALLOC_CTX *local_ctx;
 659         struct ldb_context *samdb = call->conn->ldb;
 660         struct ldb_message *msg = NULL;
 661         struct ldb_dn *dn;
 662         const char *errstr = NULL;
 663         int result = LDAP_SUCCESS;
 664         int ldb_ret;
 665         unsigned int i,j;
 666         struct ldb_result *res = NULL;
 667
 668         DEBUG(10, ("ModifyRequest"));
 669         DEBUGADD(10, (" dn: %s", req->dn));
 670
 671         local_ctx = talloc_named(call, 0, "ModifyRequest local memory context");
 672         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 673
 674         dn = ldb_dn_new(local_ctx, samdb, req->dn);
 675         VALID_DN_SYNTAX(dn);
 676
 677         DEBUG(10, ("ModifyRequest: dn: [%s]\n", req->dn));
 678
 679         msg = talloc(local_ctx, struct ldb_message);
 680         NT_STATUS_HAVE_NO_MEMORY(msg);
 681
 682         msg->dn = dn;
 683         msg->num_elements = 0;
 684         msg->elements = NULL;
 685
 686         if (req->num_mods > 0) {
 687                 msg->num_elements = req->num_mods;
 688                 msg->elements = talloc_array(msg, struct ldb_message_element, req->num_mods);
 689                 NT_STATUS_HAVE_NO_MEMORY(msg->elements);
 690
 691                 for (i=0; i < msg->num_elements; i++) {
 692                         msg->elements[i].name = discard_const_p(char, req->mods[i].attrib.name);
 693                         msg->elements[i].num_values = 0;
 694                         msg->elements[i].values = NULL;
 695
 696                         switch (req->mods[i].type) {
 697                         default:
 698                                 result = LDAP_PROTOCOL_ERROR;
 699                                 map_ldb_error(local_ctx,
 700                                         LDB_ERR_PROTOCOL_ERROR, &errstr);
 701                                 errstr = talloc_asprintf(local_ctx,
 702                                         "%s. Invalid LDAP_MODIFY_* type", errstr);
 703                                 goto reply;
 704                         case LDAP_MODIFY_ADD:
 705                                 msg->elements[i].flags = LDB_FLAG_MOD_ADD;
 706                                 break;
 707                         case LDAP_MODIFY_DELETE:
 708                                 msg->elements[i].flags = LDB_FLAG_MOD_DELETE;
 709                                 break;
 710                         case LDAP_MODIFY_REPLACE:
 711                                 msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
 712                                 break;
 713                         }
 714
 715                         msg->elements[i].num_values = req->mods[i].attrib.num_values;
 716                         if (msg->elements[i].num_values > 0) {
 717                                 msg->elements[i].values = talloc_array(msg->elements, struct ldb_val,
 718                                                                        msg->elements[i].num_values);
 719                                 NT_STATUS_HAVE_NO_MEMORY(msg->elements[i].values);
 720
 721                                 for (j=0; j < msg->elements[i].num_values; j++) {
 722                                         msg->elements[i].values[j].length = req->mods[i].attrib.values[j].length;
 723                                         msg->elements[i].values[j].data = req->mods[i].attrib.values[j].data;
 724                                 }
 725                         }
 726                 }
 727         }
 728
 729 reply:
 730         modify_reply = ldapsrv_init_reply(call, LDAP_TAG_ModifyResponse);
 731         NT_STATUS_HAVE_NO_MEMORY(modify_reply);
 732
 733         if (result == LDAP_SUCCESS) {
 734                 res = talloc_zero(local_ctx, struct ldb_result);
 735                 NT_STATUS_HAVE_NO_MEMORY(res);
 736                 ldb_ret = ldb_mod_req_with_controls(samdb, msg, call->request->controls, res);
 737                 result = map_ldb_error(local_ctx, ldb_ret, &errstr);
 738         }
 739
 740         modify_result = &modify_reply->msg->r.AddResponse;
 741         modify_result->dn = NULL;
 742
 743         if (res->refs != NULL) {
 744                 modify_result->resultcode = map_ldb_error(local_ctx, LDB_ERR_REFERRAL, &errstr);
 745                 modify_result->errormessage = (errstr?talloc_strdup(modify_reply, errstr):NULL);
 746                 modify_result->referral = talloc_strdup(call, *res->refs);
 747         } else {
 748                 modify_result->resultcode = result;
 749                 modify_result->errormessage = (errstr?talloc_strdup(modify_reply, errstr):NULL);
 750                 modify_result->referral = NULL;
 751         }
 752         talloc_free(local_ctx);
 753
 754         ldapsrv_queue_reply(call, modify_reply);
 755         return NT_STATUS_OK;
 756
 757 }
 758
 759 static NTSTATUS ldapsrv_AddRequest(struct ldapsrv_call *call)
 760 {
 761         struct ldap_AddRequest *req = &call->request->r.AddRequest;
 762         struct ldap_Result *add_result;
 763         struct ldapsrv_reply *add_reply;
 764         TALLOC_CTX *local_ctx;
 765         struct ldb_context *samdb = call->conn->ldb;
 766         struct ldb_message *msg = NULL;
 767         struct ldb_dn *dn;
 768         const char *errstr = NULL;
 769         int result = LDAP_SUCCESS;
 770         int ldb_ret;
 771         unsigned int i,j;
 772         struct ldb_result *res = NULL;
 773
 774         DEBUG(10, ("AddRequest"));
 775         DEBUGADD(10, (" dn: %s", req->dn));
 776
 777         local_ctx = talloc_named(call, 0, "AddRequest local memory context");
 778         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 779
 780         dn = ldb_dn_new(local_ctx, samdb, req->dn);
 781         VALID_DN_SYNTAX(dn);
 782
 783         DEBUG(10, ("AddRequest: dn: [%s]\n", req->dn));
 784
 785         msg = talloc(local_ctx, struct ldb_message);
 786         NT_STATUS_HAVE_NO_MEMORY(msg);
 787
 788         msg->dn = dn;
 789         msg->num_elements = 0;
 790         msg->elements = NULL;
 791
 792         if (req->num_attributes > 0) {
 793                 msg->num_elements = req->num_attributes;
 794                 msg->elements = talloc_array(msg, struct ldb_message_element, msg->num_elements);
 795                 NT_STATUS_HAVE_NO_MEMORY(msg->elements);
 796
 797                 for (i=0; i < msg->num_elements; i++) {
 798                         msg->elements[i].name = discard_const_p(char, req->attributes[i].name);
 799                         msg->elements[i].flags = 0;
 800                         msg->elements[i].num_values = 0;
 801                         msg->elements[i].values = NULL;
 802
 803                         if (req->attributes[i].num_values > 0) {
 804                                 msg->elements[i].num_values = req->attributes[i].num_values;
 805                                 msg->elements[i].values = talloc_array(msg->elements, struct ldb_val,
 806                                                                        msg->elements[i].num_values);
 807                                 NT_STATUS_HAVE_NO_MEMORY(msg->elements[i].values);
 808
 809                                 for (j=0; j < msg->elements[i].num_values; j++) {
 810                                         msg->elements[i].values[j].length = req->attributes[i].values[j].length;
 811                                         msg->elements[i].values[j].data = req->attributes[i].values[j].data;
 812                                 }
 813                         }
 814                 }
 815         }
 816
 817 reply:
 818         add_reply = ldapsrv_init_reply(call, LDAP_TAG_AddResponse);
 819         NT_STATUS_HAVE_NO_MEMORY(add_reply);
 820
 821         if (result == LDAP_SUCCESS) {
 822                 res = talloc_zero(local_ctx, struct ldb_result);
 823                 NT_STATUS_HAVE_NO_MEMORY(res);
 824                 ldb_ret = ldb_add_with_context(samdb, msg, res);
 825                 result = map_ldb_error(local_ctx, ldb_ret, &errstr);
 826         }
 827
 828         add_result = &add_reply->msg->r.AddResponse;
 829         add_result->dn = NULL;
 830         if (res->refs != NULL) {
 831                 add_result->resultcode =  map_ldb_error(local_ctx, LDB_ERR_REFERRAL, &errstr);
 832                 add_result->errormessage = (errstr?talloc_strdup(add_reply,errstr):NULL);
 833                 add_result->referral = talloc_strdup(call, *res->refs);
 834         } else {
 835                 add_result->resultcode = result;
 836                 add_result->errormessage = (errstr?talloc_strdup(add_reply,errstr):NULL);
 837                 add_result->referral = NULL;
 838         }
 839         talloc_free(local_ctx);
 840
 841         ldapsrv_queue_reply(call, add_reply);
 842         return NT_STATUS_OK;
 843
 844 }
 845
 846 static NTSTATUS ldapsrv_DelRequest(struct ldapsrv_call *call)
 847 {
 848         struct ldap_DelRequest *req = &call->request->r.DelRequest;
 849         struct ldap_Result *del_result;
 850         struct ldapsrv_reply *del_reply;
 851         TALLOC_CTX *local_ctx;
 852         struct ldb_context *samdb = call->conn->ldb;
 853         struct ldb_dn *dn;
 854         const char *errstr = NULL;
 855         int result = LDAP_SUCCESS;
 856         int ldb_ret;
 857         struct ldb_result *res = NULL;
 858
 859         DEBUG(10, ("DelRequest"));
 860         DEBUGADD(10, (" dn: %s", req->dn));
 861
 862         local_ctx = talloc_named(call, 0, "DelRequest local memory context");
 863         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 864
 865         dn = ldb_dn_new(local_ctx, samdb, req->dn);
 866         VALID_DN_SYNTAX(dn);
 867
 868         DEBUG(10, ("DelRequest: dn: [%s]\n", req->dn));
 869
 870 reply:
 871         del_reply = ldapsrv_init_reply(call, LDAP_TAG_DelResponse);
 872         NT_STATUS_HAVE_NO_MEMORY(del_reply);
 873
 874         if (result == LDAP_SUCCESS) {
 875                 res = talloc_zero(local_ctx, struct ldb_result);
 876                 NT_STATUS_HAVE_NO_MEMORY(res);
 877                 ldb_ret = ldb_delete_with_context(samdb, dn, res);
 878                 result = map_ldb_error(local_ctx, ldb_ret, &errstr);
 879         }
 880
 881         del_result = &del_reply->msg->r.DelResponse;
 882         del_result->dn = NULL;
 883         if (res->refs != NULL) {
 884                 del_result->resultcode = map_ldb_error(local_ctx, LDB_ERR_REFERRAL, &errstr);
 885                 del_result->errormessage = (errstr?talloc_strdup(del_reply,errstr):NULL);
 886                 del_result->referral = talloc_strdup(call, *res->refs);
 887         } else {
 888                 del_result->resultcode = result;
 889                 del_result->errormessage = (errstr?talloc_strdup(del_reply,errstr):NULL);
 890                 del_result->referral = NULL;
 891         }
 892
 893         talloc_free(local_ctx);
 894
 895         ldapsrv_queue_reply(call, del_reply);
 896         return NT_STATUS_OK;
 897 }
 898
 899 static NTSTATUS ldapsrv_ModifyDNRequest(struct ldapsrv_call *call)
 900 {
 901         struct ldap_ModifyDNRequest *req = &call->request->r.ModifyDNRequest;
 902         struct ldap_Result *modifydn;
 903         struct ldapsrv_reply *modifydn_r;
 904         TALLOC_CTX *local_ctx;
 905         struct ldb_context *samdb = call->conn->ldb;
 906         struct ldb_dn *olddn, *newdn=NULL, *newrdn;
 907         struct ldb_dn *parentdn = NULL;
 908         const char *errstr = NULL;
 909         int result = LDAP_SUCCESS;
 910         int ldb_ret;
 911         struct ldb_result *res = NULL;
 912
 913         DEBUG(10, ("ModifyDNRequest"));
 914         DEBUGADD(10, (" dn: %s", req->dn));
 915         DEBUGADD(10, (" newrdn: %s", req->newrdn));
 916
 917         local_ctx = talloc_named(call, 0, "ModifyDNRequest local memory context");
 918         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 919
 920         olddn = ldb_dn_new(local_ctx, samdb, req->dn);
 921         VALID_DN_SYNTAX(olddn);
 922
 923         newrdn = ldb_dn_new(local_ctx, samdb, req->newrdn);
 924         VALID_DN_SYNTAX(newrdn);
 925
 926         DEBUG(10, ("ModifyDNRequest: olddn: [%s]\n", req->dn));
 927         DEBUG(10, ("ModifyDNRequest: newrdn: [%s]\n", req->newrdn));
 928
 929         if (ldb_dn_get_comp_num(newrdn) != 1) {
 930                 result = LDAP_INVALID_DN_SYNTAX;
 931                 map_ldb_error(local_ctx, LDB_ERR_INVALID_DN_SYNTAX, &errstr);
 932                 goto reply;
 933         }
 934
 935         /* we can't handle the rename if we should not remove the old dn */
 936         if (!req->deleteolddn) {
 937                 result = LDAP_UNWILLING_TO_PERFORM;
 938                 map_ldb_error(local_ctx, LDB_ERR_UNWILLING_TO_PERFORM, &errstr);
 939                 errstr = talloc_asprintf(local_ctx,
 940                         "%s. Old RDN must be deleted", errstr);
 941                 goto reply;
 942         }
 943
 944         if (req->newsuperior) {
 945                 parentdn = ldb_dn_new(local_ctx, samdb, req->newsuperior);
 946                 VALID_DN_SYNTAX(parentdn);
 947                 DEBUG(10, ("ModifyDNRequest: newsuperior: [%s]\n", req->newsuperior));
 948
 949                 if (ldb_dn_get_comp_num(parentdn) < 1) {
 950                         result = LDAP_AFFECTS_MULTIPLE_DSAS;
 951                         map_ldb_error(local_ctx, LDB_ERR_AFFECTS_MULTIPLE_DSAS,
 952                                 &errstr);
 953                         errstr = talloc_asprintf(local_ctx,
 954                                 "%s. Error new Superior DN invalid", errstr);
 955                         goto reply;
 956                 }
 957         }
 958
 959         if (!parentdn) {
 960                 parentdn = ldb_dn_get_parent(local_ctx, olddn);
 961                 NT_STATUS_HAVE_NO_MEMORY(parentdn);
 962         }
 963
 964         if ( ! ldb_dn_add_child(parentdn, newrdn)) {
 965                 result = LDAP_OTHER;
 966                 goto reply;
 967         }
 968         newdn = parentdn;
 969
 970 reply:
 971         modifydn_r = ldapsrv_init_reply(call, LDAP_TAG_ModifyDNResponse);
 972         NT_STATUS_HAVE_NO_MEMORY(modifydn_r);
 973
 974         if (result == LDAP_SUCCESS) {
 975                 res = talloc_zero(local_ctx, struct ldb_result);
 976                 NT_STATUS_HAVE_NO_MEMORY(res);
 977                 ldb_ret = ldb_rename_with_context(samdb, olddn, newdn, res);
 978                 result = map_ldb_error(local_ctx, ldb_ret, &errstr);
 979         }
 980
 981         modifydn = &modifydn_r->msg->r.ModifyDNResponse;
 982         modifydn->dn = NULL;
 983         if (res->refs != NULL) {
 984                 modifydn->resultcode = map_ldb_error(local_ctx, LDB_ERR_REFERRAL, &errstr);;
 985                 modifydn->errormessage = (errstr?talloc_strdup(modifydn_r,errstr):NULL);
 986                 modifydn->referral = talloc_strdup(call, *res->refs);
 987         } else {
 988                 modifydn->resultcode = result;
 989                 modifydn->errormessage = (errstr?talloc_strdup(modifydn_r,errstr):NULL);
 990                 modifydn->referral = NULL;
 991         }
 992
 993         talloc_free(local_ctx);
 994
 995         ldapsrv_queue_reply(call, modifydn_r);
 996         return NT_STATUS_OK;
 997 }
 998
 999 static NTSTATUS ldapsrv_CompareRequest(struct ldapsrv_call *call)
1000 {
1001         struct ldap_CompareRequest *req = &call->request->r.CompareRequest;
1002         struct ldap_Result *compare;
1003         struct ldapsrv_reply *compare_r;
1004         TALLOC_CTX *local_ctx;
1005         struct ldb_context *samdb = call->conn->ldb;
1006         struct ldb_result *res = NULL;
1007         struct ldb_dn *dn;
1008         const char *attrs[1];
1009         const char *errstr = NULL;
1010         const char *filter = NULL;
1011         int result = LDAP_SUCCESS;
1012         int ldb_ret;
1013
1014         DEBUG(10, ("CompareRequest"));
1015         DEBUGADD(10, (" dn: %s", req->dn));
1016
1017         local_ctx = talloc_named(call, 0, "CompareRequest local_memory_context");
1018         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
1019
1020         dn = ldb_dn_new(local_ctx, samdb, req->dn);
1021         VALID_DN_SYNTAX(dn);
1022
1023         DEBUG(10, ("CompareRequest: dn: [%s]\n", req->dn));
1024         filter = talloc_asprintf(local_ctx, "(%s=%*s)", req->attribute,
1025                                  (int)req->value.length, req->value.data);
1026         NT_STATUS_HAVE_NO_MEMORY(filter);
1027
1028         DEBUGADD(10, ("CompareRequest: attribute: [%s]\n", filter));
1029
1030         attrs[0] = NULL;
1031
1032 reply:
1033         compare_r = ldapsrv_init_reply(call, LDAP_TAG_CompareResponse);
1034         NT_STATUS_HAVE_NO_MEMORY(compare_r);
1035
1036         if (result == LDAP_SUCCESS) {
1037                 ldb_ret = ldb_search(samdb, local_ctx, &res,
1038                                      dn, LDB_SCOPE_BASE, attrs, "%s", filter);
1039                 if (ldb_ret != LDB_SUCCESS) {
1040                         result = map_ldb_error(local_ctx, ldb_ret, &errstr);
1041                         DEBUG(10,("CompareRequest: error: %s\n", errstr));
1042                 } else if (res->count == 0) {
1043                         DEBUG(10,("CompareRequest: doesn't matched\n"));
1044                         result = LDAP_COMPARE_FALSE;
1045                         errstr = NULL;
1046                 } else if (res->count == 1) {
1047                         DEBUG(10,("CompareRequest: matched\n"));
1048                         result = LDAP_COMPARE_TRUE;
1049                         errstr = NULL;
1050                 } else if (res->count > 1) {
1051                         result = LDAP_OTHER;
1052                         map_ldb_error(local_ctx, LDB_ERR_OTHER, &errstr);
1053                         errstr = talloc_asprintf(local_ctx,
1054                                 "%s. Too many objects match!", errstr);
1055                         DEBUG(10,("CompareRequest: %d results: %s\n", res->count, errstr));
1056                 }
1057         }
1058
1059         compare = &compare_r->msg->r.CompareResponse;
1060         compare->dn = NULL;
1061         compare->resultcode = result;
1062         compare->errormessage = (errstr?talloc_strdup(compare_r,errstr):NULL);
1063         compare->referral = NULL;
1064
1065         talloc_free(local_ctx);
1066
1067         ldapsrv_queue_reply(call, compare_r);
1068         return NT_STATUS_OK;
1069 }
1070
1071 static NTSTATUS ldapsrv_AbandonRequest(struct ldapsrv_call *call)
1072 {
1073 /*      struct ldap_AbandonRequest *req = &call->request.r.AbandonRequest;*/
1074         DEBUG(10, ("AbandonRequest\n"));
1075         return NT_STATUS_OK;
1076 }
1077
1078 NTSTATUS ldapsrv_do_call(struct ldapsrv_call *call)
1079 {
1080         unsigned int i;
1081         struct ldap_message *msg = call->request;
1082         /* Check for undecoded critical extensions */
1083         for (i=0; msg->controls && msg->controls[i]; i++) {
1084                 if (!msg->controls_decoded[i] &&
1085                     msg->controls[i]->critical) {
1086                         DEBUG(3, ("ldapsrv_do_call: Critical extension %s is not known to this server\n",
1087                                   msg->controls[i]->oid));
1088                         return ldapsrv_unwilling(call, LDAP_UNAVAILABLE_CRITICAL_EXTENSION);
1089                 }
1090         }
1091
1092         switch(call->request->type) {
1093         case LDAP_TAG_BindRequest:
1094                 return ldapsrv_BindRequest(call);
1095         case LDAP_TAG_UnbindRequest:
1096                 return ldapsrv_UnbindRequest(call);
1097         case LDAP_TAG_SearchRequest:
1098                 return ldapsrv_SearchRequest(call);
1099         case LDAP_TAG_ModifyRequest:
1100                 return ldapsrv_ModifyRequest(call);
1101         case LDAP_TAG_AddRequest:
1102                 return ldapsrv_AddRequest(call);
1103         case LDAP_TAG_DelRequest:
1104                 return ldapsrv_DelRequest(call);
1105         case LDAP_TAG_ModifyDNRequest:
1106                 return ldapsrv_ModifyDNRequest(call);
1107         case LDAP_TAG_CompareRequest:
1108                 return ldapsrv_CompareRequest(call);
1109         case LDAP_TAG_AbandonRequest:
1110                 return ldapsrv_AbandonRequest(call);
1111         case LDAP_TAG_ExtendedRequest:
1112                 return ldapsrv_ExtendedRequest(call);
1113         default:
1114                 return ldapsrv_unwilling(call, 2);
1115         }
1116 }