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 "libcli/ldap/ldap.h"
  25 #include "auth/credentials/credentials.h"
  26 #include "auth/gensec/gensec.h"
  27 #include "param/param.h"
  28 #include "smbd/service_stream.h"
  29 #include "dsdb/samdb/samdb.h"
  30 #include "lib/ldb/include/ldb_errors.h"
  31 #include "lib/ldb_wrap.h"
  32
  33 #define VALID_DN_SYNTAX(dn) do {\
  34         if (!(dn)) {\
  35                 return NT_STATUS_NO_MEMORY;\
  36         } else if ( ! ldb_dn_validate(dn)) {\
  37                 result = LDAP_INVALID_DN_SYNTAX;\
  38                 map_ldb_error(local_ctx, LDB_ERR_INVALID_DN_SYNTAX, &errstr);\
  39                 goto reply;\
  40         }\
  41 } while(0)
  42
  43 static int map_ldb_error(TALLOC_CTX *mem_ctx, int ldb_err,
  44         const char **errstring)
  45 {
  46         WERROR err;
  47
  48         switch (ldb_err) {
  49         case LDB_SUCCESS:
  50                 err = WERR_OK;
  51         break;
  52         case LDB_ERR_OPERATIONS_ERROR:
  53                 err = WERR_DS_OPERATIONS_ERROR;
  54         break;
  55         case LDB_ERR_PROTOCOL_ERROR:
  56                 err = WERR_DS_PROTOCOL_ERROR;
  57         break;
  58         case LDB_ERR_TIME_LIMIT_EXCEEDED:
  59                 err = WERR_DS_TIMELIMIT_EXCEEDED;
  60         break;
  61         case LDB_ERR_SIZE_LIMIT_EXCEEDED:
  62                 err = WERR_DS_SIZE_LIMIT_EXCEEDED;
  63         break;
  64         case LDB_ERR_COMPARE_FALSE:
  65                 err = WERR_DS_COMPARE_FALSE;
  66         break;
  67         case LDB_ERR_COMPARE_TRUE:
  68                 err = WERR_DS_COMPARE_TRUE;
  69         break;
  70         case LDB_ERR_AUTH_METHOD_NOT_SUPPORTED:
  71                 err = WERR_DS_AUTH_METHOD_NOT_SUPPORTED;
  72         break;
  73         case LDB_ERR_STRONG_AUTH_REQUIRED:
  74                 err = WERR_DS_STRONG_AUTH_REQUIRED;
  75         break;
  76         case LDB_ERR_REFERRAL:
  77                 err = WERR_DS_REFERRAL;
  78         break;
  79         case LDB_ERR_ADMIN_LIMIT_EXCEEDED:
  80                 err = WERR_DS_ADMIN_LIMIT_EXCEEDED;
  81         break;
  82         case LDB_ERR_UNSUPPORTED_CRITICAL_EXTENSION:
  83                 err = WERR_DS_UNAVAILABLE_CRIT_EXTENSION;
  84         break;
  85         case LDB_ERR_CONFIDENTIALITY_REQUIRED:
  86                 err = WERR_DS_CONFIDENTIALITY_REQUIRED;
  87         break;
  88         case LDB_ERR_SASL_BIND_IN_PROGRESS:
  89                 err = WERR_DS_BUSY;
  90         break;
  91         case LDB_ERR_NO_SUCH_ATTRIBUTE:
  92                 err = WERR_DS_NO_ATTRIBUTE_OR_VALUE;
  93         break;
  94         case LDB_ERR_UNDEFINED_ATTRIBUTE_TYPE:
  95                 err = WERR_DS_ATTRIBUTE_TYPE_UNDEFINED;
  96         break;
  97         case LDB_ERR_INAPPROPRIATE_MATCHING:
  98                 err = WERR_DS_INAPPROPRIATE_MATCHING;
  99         break;
 100         case LDB_ERR_CONSTRAINT_VIOLATION:
 101                 err = WERR_DS_CONSTRAINT_VIOLATION;
 102         break;
 103         case LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS:
 104                 err = WERR_DS_ATTRIBUTE_OR_VALUE_EXISTS;
 105         break;
 106         case LDB_ERR_INVALID_ATTRIBUTE_SYNTAX:
 107                 err = WERR_DS_INVALID_ATTRIBUTE_SYNTAX;
 108         break;
 109         case LDB_ERR_NO_SUCH_OBJECT:
 110                 err = WERR_DS_NO_SUCH_OBJECT;
 111         break;
 112         case LDB_ERR_ALIAS_PROBLEM:
 113                 err = WERR_DS_ALIAS_PROBLEM;
 114         break;
 115         case LDB_ERR_INVALID_DN_SYNTAX:
 116                 err = WERR_DS_INVALID_DN_SYNTAX;
 117         break;
 118         case LDB_ERR_ALIAS_DEREFERENCING_PROBLEM:
 119                 err = WERR_DS_ALIAS_DEREF_PROBLEM;
 120         break;
 121         case LDB_ERR_INAPPROPRIATE_AUTHENTICATION:
 122                 err = WERR_DS_INAPPROPRIATE_AUTH;
 123         break;
 124         case LDB_ERR_INVALID_CREDENTIALS:
 125                 err = WERR_ACCESS_DENIED;
 126         break;
 127         case LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS:
 128                 err = WERR_DS_INSUFF_ACCESS_RIGHTS;
 129         break;
 130         case LDB_ERR_BUSY:
 131                 err = WERR_DS_BUSY;
 132         break;
 133         case LDB_ERR_UNAVAILABLE:
 134                 err = WERR_DS_UNAVAILABLE;
 135         break;
 136         case LDB_ERR_UNWILLING_TO_PERFORM:
 137                 err = WERR_DS_UNWILLING_TO_PERFORM;
 138         break;
 139         case LDB_ERR_LOOP_DETECT:
 140                 err = WERR_DS_LOOP_DETECT;
 141         break;
 142         case LDB_ERR_NAMING_VIOLATION:
 143                 err = WERR_DS_NAMING_VIOLATION;
 144         break;
 145         case LDB_ERR_OBJECT_CLASS_VIOLATION:
 146                 err = WERR_DS_OBJ_CLASS_VIOLATION;
 147         break;
 148         case LDB_ERR_NOT_ALLOWED_ON_NON_LEAF:
 149                 err = WERR_DS_CANT_ON_NON_LEAF;
 150         break;
 151         case LDB_ERR_NOT_ALLOWED_ON_RDN:
 152                 err = WERR_DS_CANT_ON_RDN;
 153         break;
 154         case LDB_ERR_ENTRY_ALREADY_EXISTS:
 155                 err = WERR_DS_OBJ_STRING_NAME_EXISTS;
 156         break;
 157         case LDB_ERR_OBJECT_CLASS_MODS_PROHIBITED:
 158                 err = WERR_DS_CANT_MOD_OBJ_CLASS;
 159         break;
 160         case LDB_ERR_AFFECTS_MULTIPLE_DSAS:
 161                 err = WERR_DS_AFFECTS_MULTIPLE_DSAS;
 162         break;
 163         default:
 164                 err = WERR_DS_GENERIC_ERROR;
 165         break;
 166         }
 167
 168         *errstring = talloc_asprintf(mem_ctx, "%08x: %s", W_ERROR_V(err),
 169                 ldb_strerror(ldb_err));
 170
 171         /* result is 1:1 for now */
 172         return ldb_err;
 173 }
 174 /* create and execute a modify request */
 175 static int ldb_mod_req_with_controls(struct ldb_context *ldb,
 176                                      const struct ldb_message *message,
 177                                      struct ldb_control **controls)
 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                                         NULL,
 191                                         ldb_op_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                 return ldb_transaction_commit(ldb);
 210         }
 211         ldb_transaction_cancel(ldb);
 212
 213         talloc_free(req);
 214         return ret;
 215 }
 216
 217 /*
 218   connect to the sam database
 219 */
 220 NTSTATUS ldapsrv_backend_Init(struct ldapsrv_connection *conn)
 221 {
 222         conn->ldb = ldb_wrap_connect(conn,
 223                                      conn->connection->event.ctx,
 224                                      conn->lp_ctx,
 225                                      lp_sam_url(conn->lp_ctx),
 226                                      conn->session_info,
 227                                      samdb_credentials(conn->connection->event.ctx, conn->lp_ctx),
 228                                      conn->global_catalog ? LDB_FLG_RDONLY : 0);
 229         if (conn->ldb == NULL) {
 230                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
 231         }
 232
 233         if (conn->server_credentials) {
 234                 char **sasl_mechs = NULL;
 235                 struct gensec_security_ops **backends = gensec_security_all();
 236                 struct gensec_security_ops **ops
 237                         = gensec_use_kerberos_mechs(conn, backends, conn->server_credentials);
 238                 int i, j = 0;
 239                 for (i = 0; ops && ops[i]; i++) {
 240                         if (!lp_parm_bool(conn->lp_ctx,  NULL, "gensec", ops[i]->name, ops[i]->enabled))
 241                                 continue;
 242
 243                         if (ops[i]->sasl_name && ops[i]->server_start) {
 244                                 char *sasl_name = talloc_strdup(conn, ops[i]->sasl_name);
 245
 246                                 if (!sasl_name) {
 247                                         return NT_STATUS_NO_MEMORY;
 248                                 }
 249                                 sasl_mechs = talloc_realloc(conn, sasl_mechs, char *, j + 2);
 250                                 if (!sasl_mechs) {
 251                                         return NT_STATUS_NO_MEMORY;
 252                                 }
 253                                 sasl_mechs[j] = sasl_name;
 254                                 talloc_steal(sasl_mechs, sasl_name);
 255                                 sasl_mechs[j+1] = NULL;
 256                                 j++;
 257                         }
 258                 }
 259                 talloc_unlink(conn, ops);
 260                 ldb_set_opaque(conn->ldb, "supportedSASLMechanims", sasl_mechs);
 261         }
 262
 263         return NT_STATUS_OK;
 264 }
 265
 266 struct ldapsrv_reply *ldapsrv_init_reply(struct ldapsrv_call *call, uint8_t type)
 267 {
 268         struct ldapsrv_reply *reply;
 269
 270         reply = talloc(call, struct ldapsrv_reply);
 271         if (!reply) {
 272                 return NULL;
 273         }
 274         reply->msg = talloc(reply, struct ldap_message);
 275         if (reply->msg == NULL) {
 276                 talloc_free(reply);
 277                 return NULL;
 278         }
 279
 280         reply->msg->messageid = call->request->messageid;
 281         reply->msg->type = type;
 282         reply->msg->controls = NULL;
 283
 284         return reply;
 285 }
 286
 287 void ldapsrv_queue_reply(struct ldapsrv_call *call, struct ldapsrv_reply *reply)
 288 {
 289         DLIST_ADD_END(call->replies, reply, struct ldapsrv_reply *);
 290 }
 291
 292 static NTSTATUS ldapsrv_unwilling(struct ldapsrv_call *call, int error)
 293 {
 294         struct ldapsrv_reply *reply;
 295         struct ldap_ExtendedResponse *r;
 296
 297         DEBUG(10,("Unwilling type[%d] id[%d]\n", call->request->type, call->request->messageid));
 298
 299         reply = ldapsrv_init_reply(call, LDAP_TAG_ExtendedResponse);
 300         if (!reply) {
 301                 return NT_STATUS_NO_MEMORY;
 302         }
 303
 304         r = &reply->msg->r.ExtendedResponse;
 305         r->response.resultcode = error;
 306         r->response.dn = NULL;
 307         r->response.errormessage = NULL;
 308         r->response.referral = NULL;
 309         r->oid = NULL;
 310         r->value = NULL;
 311
 312         ldapsrv_queue_reply(call, reply);
 313         return NT_STATUS_OK;
 314 }
 315
 316 static NTSTATUS ldapsrv_SearchRequest(struct ldapsrv_call *call)
 317 {
 318         struct ldap_SearchRequest *req = &call->request->r.SearchRequest;
 319         struct ldap_SearchResEntry *ent;
 320         struct ldap_Result *done;
 321         struct ldapsrv_reply *ent_r, *done_r;
 322         TALLOC_CTX *local_ctx;
 323         struct ldb_context *samdb = talloc_get_type(call->conn->ldb, struct ldb_context);
 324         struct ldb_dn *basedn;
 325         struct ldb_result *res = NULL;
 326         struct ldb_request *lreq;
 327         struct ldb_control *search_control;
 328         struct ldb_search_options_control *search_options;
 329         struct ldb_control *extended_dn_control;
 330         struct ldb_extended_dn_control *extended_dn_decoded = NULL;
 331         enum ldb_scope scope = LDB_SCOPE_DEFAULT;
 332         const char **attrs = NULL;
 333         const char *scope_str, *errstr = NULL;
 334         int success_limit = 1;
 335         int result = -1;
 336         int ldb_ret = -1;
 337         int i, j;
 338         int extended_type = 1;
 339
 340         DEBUG(10, ("SearchRequest"));
 341         DEBUGADD(10, (" basedn: %s", req->basedn));
 342         DEBUGADD(10, (" filter: %s\n", ldb_filter_from_tree(call, req->tree)));
 343
 344         local_ctx = talloc_new(call);
 345         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 346
 347         basedn = ldb_dn_new(local_ctx, samdb, req->basedn);
 348         VALID_DN_SYNTAX(basedn);
 349
 350         DEBUG(10, ("SearchRequest: basedn: [%s]\n", req->basedn));
 351         DEBUG(10, ("SearchRequest: filter: [%s]\n", ldb_filter_from_tree(call, req->tree)));
 352
 353         switch (req->scope) {
 354                 case LDAP_SEARCH_SCOPE_BASE:
 355                         scope_str = "BASE";
 356                         scope = LDB_SCOPE_BASE;
 357                         success_limit = 0;
 358                         break;
 359                 case LDAP_SEARCH_SCOPE_SINGLE:
 360                         scope_str = "ONE";
 361                         scope = LDB_SCOPE_ONELEVEL;
 362                         success_limit = 0;
 363                         break;
 364                 case LDAP_SEARCH_SCOPE_SUB:
 365                         scope_str = "SUB";
 366                         scope = LDB_SCOPE_SUBTREE;
 367                         success_limit = 0;
 368                         break;
 369                 default:
 370                         result = LDAP_PROTOCOL_ERROR;
 371                         map_ldb_error(local_ctx, LDB_ERR_PROTOCOL_ERROR,
 372                                 &errstr);
 373                         errstr = talloc_asprintf(local_ctx,
 374                                 "%s. Invalid scope", errstr);
 375                         goto reply;
 376         }
 377         DEBUG(10,("SearchRequest: scope: [%s]\n", scope_str));
 378
 379         if (req->num_attributes >= 1) {
 380                 attrs = talloc_array(local_ctx, const char *, req->num_attributes+1);
 381                 NT_STATUS_HAVE_NO_MEMORY(attrs);
 382
 383                 for (i=0; i < req->num_attributes; i++) {
 384                         DEBUG(10,("SearchRequest: attrs: [%s]\n",req->attributes[i]));
 385                         attrs[i] = req->attributes[i];
 386                 }
 387                 attrs[i] = NULL;
 388         }
 389
 390         DEBUG(5,("ldb_request %s dn=%s filter=%s\n",
 391                  scope_str, req->basedn, ldb_filter_from_tree(call, req->tree)));
 392
 393         res = talloc_zero(local_ctx, struct ldb_result);
 394         NT_STATUS_HAVE_NO_MEMORY(res);
 395
 396         ldb_ret = ldb_build_search_req_ex(&lreq, samdb, local_ctx,
 397                                           basedn, scope,
 398                                           req->tree, attrs,
 399                                           call->request->controls,
 400                                           res, ldb_search_default_callback,
 401                                           NULL);
 402
 403         if (ldb_ret != LDB_SUCCESS) {
 404                 goto reply;
 405         }
 406
 407         if (call->conn->global_catalog) {
 408                 search_control = ldb_request_get_control(lreq, LDB_CONTROL_SEARCH_OPTIONS_OID);
 409
 410                 search_options = NULL;
 411                 if (search_control) {
 412                         search_options = talloc_get_type(search_control->data, struct ldb_search_options_control);
 413                         search_options->search_options |= LDB_SEARCH_OPTION_PHANTOM_ROOT;
 414                 } else {
 415                         search_options = talloc(lreq, struct ldb_search_options_control);
 416                         NT_STATUS_HAVE_NO_MEMORY(search_options);
 417                         search_options->search_options = LDB_SEARCH_OPTION_PHANTOM_ROOT;
 418                         ldb_request_add_control(lreq, LDB_CONTROL_SEARCH_OPTIONS_OID, false, search_options);
 419                 }
 420         }
 421
 422         extended_dn_control = ldb_request_get_control(lreq, LDB_CONTROL_EXTENDED_DN_OID);
 423
 424         if (extended_dn_control) {
 425                 if (extended_dn_control->data) {
 426                         extended_dn_decoded = talloc_get_type(extended_dn_control->data, struct ldb_extended_dn_control);
 427                         extended_type = extended_dn_decoded->type;
 428                 } else {
 429                         extended_type = 0;
 430                 }
 431         }
 432
 433         ldb_set_timeout(samdb, lreq, req->timelimit);
 434
 435         ldb_ret = ldb_request(samdb, lreq);
 436
 437         if (ldb_ret != LDB_SUCCESS) {
 438                 goto reply;
 439         }
 440
 441         ldb_ret = ldb_wait(lreq->handle, LDB_WAIT_ALL);
 442
 443         if (ldb_ret == LDB_SUCCESS) {
 444                 for (i = 0; i < res->count; i++) {
 445                         ent_r = ldapsrv_init_reply(call, LDAP_TAG_SearchResultEntry);
 446                         NT_STATUS_HAVE_NO_MEMORY(ent_r);
 447
 448                         /* Better to have the whole message kept here,
 449                          * than to find someone further up didn't put
 450                          * a value in the right spot in the talloc tree */
 451                         talloc_steal(ent_r, res->msgs[i]);
 452
 453                         ent = &ent_r->msg->r.SearchResultEntry;
 454                         ent->dn = ldb_dn_get_extended_linearized(ent_r, res->msgs[i]->dn, extended_type);
 455                         ent->num_attributes = 0;
 456                         ent->attributes = NULL;
 457                         if (res->msgs[i]->num_elements == 0) {
 458                                 goto queue_reply;
 459                         }
 460                         ent->num_attributes = res->msgs[i]->num_elements;
 461                         ent->attributes = talloc_array(ent_r, struct ldb_message_element, ent->num_attributes);
 462                         NT_STATUS_HAVE_NO_MEMORY(ent->attributes);
 463                         for (j=0; j < ent->num_attributes; j++) {
 464                                 ent->attributes[j].name = res->msgs[i]->elements[j].name;
 465                                 ent->attributes[j].num_values = 0;
 466                                 ent->attributes[j].values = NULL;
 467                                 if (req->attributesonly && (res->msgs[i]->elements[j].num_values == 0)) {
 468                                         continue;
 469                                 }
 470                                 ent->attributes[j].num_values = res->msgs[i]->elements[j].num_values;
 471                                 ent->attributes[j].values = res->msgs[i]->elements[j].values;
 472                         }
 473 queue_reply:
 474                         ldapsrv_queue_reply(call, ent_r);
 475                 }
 476         }
 477
 478 reply:
 479         done_r = ldapsrv_init_reply(call, LDAP_TAG_SearchResultDone);
 480         NT_STATUS_HAVE_NO_MEMORY(done_r);
 481
 482         done = &done_r->msg->r.SearchResultDone;
 483         done->dn = NULL;
 484         done->referral = NULL;
 485
 486         if (result != -1) {
 487         } else if (ldb_ret == LDB_SUCCESS) {
 488                 if (res->count >= success_limit) {
 489                         DEBUG(10,("SearchRequest: results: [%d]\n", res->count));
 490                         result = LDAP_SUCCESS;
 491                         errstr = NULL;
 492                 }
 493                 if (res->controls) {
 494                         done_r->msg->controls = res->controls;
 495                         talloc_steal(done_r, res->controls);
 496                 }
 497         } else {
 498                 DEBUG(10,("SearchRequest: error\n"));
 499                 result = map_ldb_error(local_ctx, ldb_ret, &errstr);
 500         }
 501
 502         done->resultcode = result;
 503         done->errormessage = (errstr?talloc_strdup(done_r, errstr):NULL);
 504
 505         talloc_free(local_ctx);
 506
 507         ldapsrv_queue_reply(call, done_r);
 508         return NT_STATUS_OK;
 509 }
 510
 511 static NTSTATUS ldapsrv_ModifyRequest(struct ldapsrv_call *call)
 512 {
 513         struct ldap_ModifyRequest *req = &call->request->r.ModifyRequest;
 514         struct ldap_Result *modify_result;
 515         struct ldapsrv_reply *modify_reply;
 516         TALLOC_CTX *local_ctx;
 517         struct ldb_context *samdb = call->conn->ldb;
 518         struct ldb_message *msg = NULL;
 519         struct ldb_dn *dn;
 520         const char *errstr = NULL;
 521         int result = LDAP_SUCCESS;
 522         int ldb_ret;
 523         int i,j;
 524
 525         DEBUG(10, ("ModifyRequest"));
 526         DEBUGADD(10, (" dn: %s", req->dn));
 527
 528         local_ctx = talloc_named(call, 0, "ModifyRequest local memory context");
 529         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 530
 531         dn = ldb_dn_new(local_ctx, samdb, req->dn);
 532         VALID_DN_SYNTAX(dn);
 533
 534         DEBUG(10, ("ModifyRequest: dn: [%s]\n", req->dn));
 535
 536         msg = talloc(local_ctx, struct ldb_message);
 537         NT_STATUS_HAVE_NO_MEMORY(msg);
 538
 539         msg->dn = dn;
 540         msg->num_elements = 0;
 541         msg->elements = NULL;
 542
 543         if (req->num_mods > 0) {
 544                 msg->num_elements = req->num_mods;
 545                 msg->elements = talloc_array(msg, struct ldb_message_element, req->num_mods);
 546                 NT_STATUS_HAVE_NO_MEMORY(msg->elements);
 547
 548                 for (i=0; i < msg->num_elements; i++) {
 549                         msg->elements[i].name = discard_const_p(char, req->mods[i].attrib.name);
 550                         msg->elements[i].num_values = 0;
 551                         msg->elements[i].values = NULL;
 552
 553                         switch (req->mods[i].type) {
 554                         default:
 555                                 result = LDAP_PROTOCOL_ERROR;
 556                                 map_ldb_error(local_ctx,
 557                                         LDB_ERR_PROTOCOL_ERROR, &errstr);
 558                                 errstr = talloc_asprintf(local_ctx,
 559                                         "%s. Invalid LDAP_MODIFY_* type", errstr);
 560                                 goto reply;
 561                         case LDAP_MODIFY_ADD:
 562                                 msg->elements[i].flags = LDB_FLAG_MOD_ADD;
 563                                 break;
 564                         case LDAP_MODIFY_DELETE:
 565                                 msg->elements[i].flags = LDB_FLAG_MOD_DELETE;
 566                                 break;
 567                         case LDAP_MODIFY_REPLACE:
 568                                 msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
 569                                 break;
 570                         }
 571
 572                         msg->elements[i].num_values = req->mods[i].attrib.num_values;
 573                         if (msg->elements[i].num_values > 0) {
 574                                 msg->elements[i].values = talloc_array(msg->elements, struct ldb_val,
 575                                                                        msg->elements[i].num_values);
 576                                 NT_STATUS_HAVE_NO_MEMORY(msg->elements[i].values);
 577
 578                                 for (j=0; j < msg->elements[i].num_values; j++) {
 579                                         msg->elements[i].values[j].length = req->mods[i].attrib.values[j].length;
 580                                         msg->elements[i].values[j].data = req->mods[i].attrib.values[j].data;
 581                                 }
 582                         }
 583                 }
 584         }
 585
 586 reply:
 587         modify_reply = ldapsrv_init_reply(call, LDAP_TAG_ModifyResponse);
 588         NT_STATUS_HAVE_NO_MEMORY(modify_reply);
 589
 590         if (result == LDAP_SUCCESS) {
 591                 ldb_ret = ldb_mod_req_with_controls(samdb, msg, call->request->controls);
 592                 result = map_ldb_error(local_ctx, ldb_ret, &errstr);
 593         }
 594
 595         modify_result = &modify_reply->msg->r.AddResponse;
 596         modify_result->dn = NULL;
 597         modify_result->resultcode = result;
 598         modify_result->errormessage = (errstr?talloc_strdup(modify_reply, errstr):NULL);
 599         modify_result->referral = NULL;
 600
 601         talloc_free(local_ctx);
 602
 603         ldapsrv_queue_reply(call, modify_reply);
 604         return NT_STATUS_OK;
 605
 606 }
 607
 608 static NTSTATUS ldapsrv_AddRequest(struct ldapsrv_call *call)
 609 {
 610         struct ldap_AddRequest *req = &call->request->r.AddRequest;
 611         struct ldap_Result *add_result;
 612         struct ldapsrv_reply *add_reply;
 613         TALLOC_CTX *local_ctx;
 614         struct ldb_context *samdb = call->conn->ldb;
 615         struct ldb_message *msg = NULL;
 616         struct ldb_dn *dn;
 617         const char *errstr = NULL;
 618         int result = LDAP_SUCCESS;
 619         int ldb_ret;
 620         int i,j;
 621
 622         DEBUG(10, ("AddRequest"));
 623         DEBUGADD(10, (" dn: %s", req->dn));
 624
 625         local_ctx = talloc_named(call, 0, "AddRequest local memory context");
 626         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 627
 628         dn = ldb_dn_new(local_ctx, samdb, req->dn);
 629         VALID_DN_SYNTAX(dn);
 630
 631         DEBUG(10, ("AddRequest: dn: [%s]\n", req->dn));
 632
 633         msg = talloc(local_ctx, struct ldb_message);
 634         NT_STATUS_HAVE_NO_MEMORY(msg);
 635
 636         msg->dn = dn;
 637         msg->num_elements = 0;
 638         msg->elements = NULL;
 639
 640         if (req->num_attributes > 0) {
 641                 msg->num_elements = req->num_attributes;
 642                 msg->elements = talloc_array(msg, struct ldb_message_element, msg->num_elements);
 643                 NT_STATUS_HAVE_NO_MEMORY(msg->elements);
 644
 645                 for (i=0; i < msg->num_elements; i++) {
 646                         msg->elements[i].name = discard_const_p(char, req->attributes[i].name);
 647                         msg->elements[i].flags = 0;
 648                         msg->elements[i].num_values = 0;
 649                         msg->elements[i].values = NULL;
 650
 651                         if (req->attributes[i].num_values > 0) {
 652                                 msg->elements[i].num_values = req->attributes[i].num_values;
 653                                 msg->elements[i].values = talloc_array(msg->elements, struct ldb_val,
 654                                                                        msg->elements[i].num_values);
 655                                 NT_STATUS_HAVE_NO_MEMORY(msg->elements[i].values);
 656
 657                                 for (j=0; j < msg->elements[i].num_values; j++) {
 658                                         msg->elements[i].values[j].length = req->attributes[i].values[j].length;
 659                                         msg->elements[i].values[j].data = req->attributes[i].values[j].data;
 660                                 }
 661                         }
 662                 }
 663         }
 664
 665 reply:
 666         add_reply = ldapsrv_init_reply(call, LDAP_TAG_AddResponse);
 667         NT_STATUS_HAVE_NO_MEMORY(add_reply);
 668
 669         if (result == LDAP_SUCCESS) {
 670                 ldb_ret = ldb_add(samdb, msg);
 671                 result = map_ldb_error(local_ctx, ldb_ret, &errstr);
 672         }
 673
 674         add_result = &add_reply->msg->r.AddResponse;
 675         add_result->dn = NULL;
 676         add_result->resultcode = result;
 677         add_result->errormessage = (errstr?talloc_strdup(add_reply,errstr):NULL);
 678         add_result->referral = NULL;
 679
 680         talloc_free(local_ctx);
 681
 682         ldapsrv_queue_reply(call, add_reply);
 683         return NT_STATUS_OK;
 684
 685 }
 686
 687 static NTSTATUS ldapsrv_DelRequest(struct ldapsrv_call *call)
 688 {
 689         struct ldap_DelRequest *req = &call->request->r.DelRequest;
 690         struct ldap_Result *del_result;
 691         struct ldapsrv_reply *del_reply;
 692         TALLOC_CTX *local_ctx;
 693         struct ldb_context *samdb = call->conn->ldb;
 694         struct ldb_dn *dn;
 695         const char *errstr = NULL;
 696         int result = LDAP_SUCCESS;
 697         int ldb_ret;
 698
 699         DEBUG(10, ("DelRequest"));
 700         DEBUGADD(10, (" dn: %s", req->dn));
 701
 702         local_ctx = talloc_named(call, 0, "DelRequest local memory context");
 703         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 704
 705         dn = ldb_dn_new(local_ctx, samdb, req->dn);
 706         VALID_DN_SYNTAX(dn);
 707
 708         DEBUG(10, ("DelRequest: dn: [%s]\n", req->dn));
 709
 710 reply:
 711         del_reply = ldapsrv_init_reply(call, LDAP_TAG_DelResponse);
 712         NT_STATUS_HAVE_NO_MEMORY(del_reply);
 713
 714         if (result == LDAP_SUCCESS) {
 715                 ldb_ret = ldb_delete(samdb, dn);
 716                 result = map_ldb_error(local_ctx, ldb_ret, &errstr);
 717         }
 718
 719         del_result = &del_reply->msg->r.DelResponse;
 720         del_result->dn = NULL;
 721         del_result->resultcode = result;
 722         del_result->errormessage = (errstr?talloc_strdup(del_reply,errstr):NULL);
 723         del_result->referral = NULL;
 724
 725         talloc_free(local_ctx);
 726
 727         ldapsrv_queue_reply(call, del_reply);
 728         return NT_STATUS_OK;
 729 }
 730
 731 static NTSTATUS ldapsrv_ModifyDNRequest(struct ldapsrv_call *call)
 732 {
 733         struct ldap_ModifyDNRequest *req = &call->request->r.ModifyDNRequest;
 734         struct ldap_Result *modifydn;
 735         struct ldapsrv_reply *modifydn_r;
 736         TALLOC_CTX *local_ctx;
 737         struct ldb_context *samdb = call->conn->ldb;
 738         struct ldb_dn *olddn, *newdn=NULL, *newrdn;
 739         struct ldb_dn *parentdn = NULL;
 740         const char *errstr = NULL;
 741         int result = LDAP_SUCCESS;
 742         int ldb_ret;
 743
 744         DEBUG(10, ("ModifyDNRequest"));
 745         DEBUGADD(10, (" dn: %s", req->dn));
 746         DEBUGADD(10, (" newrdn: %s", req->newrdn));
 747
 748         local_ctx = talloc_named(call, 0, "ModifyDNRequest local memory context");
 749         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 750
 751         olddn = ldb_dn_new(local_ctx, samdb, req->dn);
 752         VALID_DN_SYNTAX(olddn);
 753
 754         newrdn = ldb_dn_new(local_ctx, samdb, req->newrdn);
 755         VALID_DN_SYNTAX(newrdn);
 756
 757         DEBUG(10, ("ModifyDNRequest: olddn: [%s]\n", req->dn));
 758         DEBUG(10, ("ModifyDNRequest: newrdn: [%s]\n", req->newrdn));
 759
 760         if (ldb_dn_get_comp_num(newrdn) != 1) {
 761                 result = LDAP_INVALID_DN_SYNTAX;
 762                 map_ldb_error(local_ctx, LDB_ERR_INVALID_DN_SYNTAX, &errstr);
 763                 goto reply;
 764         }
 765
 766         /* we can't handle the rename if we should not remove the old dn */
 767         if (!req->deleteolddn) {
 768                 result = LDAP_UNWILLING_TO_PERFORM;
 769                 map_ldb_error(local_ctx, LDB_ERR_UNWILLING_TO_PERFORM, &errstr);
 770                 errstr = talloc_asprintf(local_ctx,
 771                         "%s. Old RDN must be deleted", errstr);
 772                 goto reply;
 773         }
 774
 775         if (req->newsuperior) {
 776                 parentdn = ldb_dn_new(local_ctx, samdb, req->newsuperior);
 777                 VALID_DN_SYNTAX(parentdn);
 778                 DEBUG(10, ("ModifyDNRequest: newsuperior: [%s]\n", req->newsuperior));
 779
 780                 if (ldb_dn_get_comp_num(parentdn) < 1) {
 781                         result = LDAP_AFFECTS_MULTIPLE_DSAS;
 782                         map_ldb_error(local_ctx, LDB_ERR_AFFECTS_MULTIPLE_DSAS,
 783                                 &errstr);
 784                         errstr = talloc_asprintf(local_ctx,
 785                                 "%s. Error new Superior DN invalid", errstr);
 786                         goto reply;
 787                 }
 788         }
 789
 790         if (!parentdn) {
 791                 parentdn = ldb_dn_get_parent(local_ctx, olddn);
 792                 NT_STATUS_HAVE_NO_MEMORY(parentdn);
 793         }
 794
 795         if ( ! ldb_dn_add_child(parentdn, newrdn)) {
 796                 result = LDAP_OTHER;
 797                 goto reply;
 798         }
 799         newdn = parentdn;
 800
 801 reply:
 802         modifydn_r = ldapsrv_init_reply(call, LDAP_TAG_ModifyDNResponse);
 803         NT_STATUS_HAVE_NO_MEMORY(modifydn_r);
 804
 805         if (result == LDAP_SUCCESS) {
 806                 ldb_ret = ldb_rename(samdb, olddn, newdn);
 807                 result = map_ldb_error(local_ctx, ldb_ret, &errstr);
 808         }
 809
 810         modifydn = &modifydn_r->msg->r.ModifyDNResponse;
 811         modifydn->dn = NULL;
 812         modifydn->resultcode = result;
 813         modifydn->errormessage = (errstr?talloc_strdup(modifydn_r,errstr):NULL);
 814         modifydn->referral = NULL;
 815
 816         talloc_free(local_ctx);
 817
 818         ldapsrv_queue_reply(call, modifydn_r);
 819         return NT_STATUS_OK;
 820 }
 821
 822 static NTSTATUS ldapsrv_CompareRequest(struct ldapsrv_call *call)
 823 {
 824         struct ldap_CompareRequest *req = &call->request->r.CompareRequest;
 825         struct ldap_Result *compare;
 826         struct ldapsrv_reply *compare_r;
 827         TALLOC_CTX *local_ctx;
 828         struct ldb_context *samdb = call->conn->ldb;
 829         struct ldb_result *res = NULL;
 830         struct ldb_dn *dn;
 831         const char *attrs[1];
 832         const char *errstr = NULL;
 833         const char *filter = NULL;
 834         int result = LDAP_SUCCESS;
 835         int ldb_ret;
 836
 837         DEBUG(10, ("CompareRequest"));
 838         DEBUGADD(10, (" dn: %s", req->dn));
 839
 840         local_ctx = talloc_named(call, 0, "CompareRequest local_memory_context");
 841         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 842
 843         dn = ldb_dn_new(local_ctx, samdb, req->dn);
 844         VALID_DN_SYNTAX(dn);
 845
 846         DEBUG(10, ("CompareRequest: dn: [%s]\n", req->dn));
 847         filter = talloc_asprintf(local_ctx, "(%s=%*s)", req->attribute,
 848                                  (int)req->value.length, req->value.data);
 849         NT_STATUS_HAVE_NO_MEMORY(filter);
 850
 851         DEBUGADD(10, ("CompareRequest: attribute: [%s]\n", filter));
 852
 853         attrs[0] = NULL;
 854
 855 reply:
 856         compare_r = ldapsrv_init_reply(call, LDAP_TAG_CompareResponse);
 857         NT_STATUS_HAVE_NO_MEMORY(compare_r);
 858
 859         if (result == LDAP_SUCCESS) {
 860                 ldb_ret = ldb_search(samdb, local_ctx, &res,
 861                                      dn, LDB_SCOPE_BASE, attrs, "%s", filter);
 862                 if (ldb_ret != LDB_SUCCESS) {
 863                         result = map_ldb_error(local_ctx, ldb_ret, &errstr);
 864                         DEBUG(10,("CompareRequest: error: %s\n", errstr));
 865                 } else if (res->count == 0) {
 866                         DEBUG(10,("CompareRequest: doesn't matched\n"));
 867                         result = LDAP_COMPARE_FALSE;
 868                         errstr = NULL;
 869                 } else if (res->count == 1) {
 870                         DEBUG(10,("CompareRequest: matched\n"));
 871                         result = LDAP_COMPARE_TRUE;
 872                         errstr = NULL;
 873                 } else if (res->count > 1) {
 874                         result = LDAP_OTHER;
 875                         map_ldb_error(local_ctx, LDB_ERR_OTHER, &errstr);
 876                         errstr = talloc_asprintf(local_ctx,
 877                                 "%s. Too many objects match!", errstr);
 878                         DEBUG(10,("CompareRequest: %d results: %s\n", res->count, errstr));
 879                 }
 880         }
 881
 882         compare = &compare_r->msg->r.CompareResponse;
 883         compare->dn = NULL;
 884         compare->resultcode = result;
 885         compare->errormessage = (errstr?talloc_strdup(compare_r,errstr):NULL);
 886         compare->referral = NULL;
 887
 888         talloc_free(local_ctx);
 889
 890         ldapsrv_queue_reply(call, compare_r);
 891         return NT_STATUS_OK;
 892 }
 893
 894 static NTSTATUS ldapsrv_AbandonRequest(struct ldapsrv_call *call)
 895 {
 896 /*      struct ldap_AbandonRequest *req = &call->request.r.AbandonRequest;*/
 897         DEBUG(10, ("AbandonRequest\n"));
 898         return NT_STATUS_OK;
 899 }
 900
 901 NTSTATUS ldapsrv_do_call(struct ldapsrv_call *call)
 902 {
 903         int i;
 904         struct ldap_message *msg = call->request;
 905         /* Check for undecoded critical extensions */
 906         for (i=0; msg->controls && msg->controls[i]; i++) {
 907                 if (!msg->controls_decoded[i] &&
 908                     msg->controls[i]->critical) {
 909                         DEBUG(3, ("ldapsrv_do_call: Critical extension %s is not known to this server\n",
 910                                   msg->controls[i]->oid));
 911                         return ldapsrv_unwilling(call, LDAP_UNAVAILABLE_CRITICAL_EXTENSION);
 912                 }
 913         }
 914
 915         switch(call->request->type) {
 916         case LDAP_TAG_BindRequest:
 917                 return ldapsrv_BindRequest(call);
 918         case LDAP_TAG_UnbindRequest:
 919                 return ldapsrv_UnbindRequest(call);
 920         case LDAP_TAG_SearchRequest:
 921                 return ldapsrv_SearchRequest(call);
 922         case LDAP_TAG_ModifyRequest:
 923                 return ldapsrv_ModifyRequest(call);
 924         case LDAP_TAG_AddRequest:
 925                 return ldapsrv_AddRequest(call);
 926         case LDAP_TAG_DelRequest:
 927                 return ldapsrv_DelRequest(call);
 928         case LDAP_TAG_ModifyDNRequest:
 929                 return ldapsrv_ModifyDNRequest(call);
 930         case LDAP_TAG_CompareRequest:
 931                 return ldapsrv_CompareRequest(call);
 932         case LDAP_TAG_AbandonRequest:
 933                 return ldapsrv_AbandonRequest(call);
 934         case LDAP_TAG_ExtendedRequest:
 935                 return ldapsrv_ExtendedRequest(call);
 936         default:
 937                 return ldapsrv_unwilling(call, 2);
 938         }
 939 }