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
 175 /*
 176   connect to the sam database
 177 */
 178 NTSTATUS ldapsrv_backend_Init(struct ldapsrv_connection *conn)
 179 {
 180         conn->ldb = ldb_wrap_connect(conn,
 181                                      conn->connection->event.ctx,
 182                                      conn->lp_ctx,
 183                                      lp_sam_url(conn->lp_ctx),
 184                                      conn->session_info,
 185                                      samdb_credentials(conn, conn->connection->event.ctx, conn->lp_ctx),
 186                                      conn->global_catalog ? LDB_FLG_RDONLY : 0, NULL);
 187         if (conn->ldb == NULL) {
 188                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
 189         }
 190
 191         if (conn->server_credentials) {
 192                 char **sasl_mechs = NULL;
 193                 struct gensec_security_ops **backends = gensec_security_all();
 194                 struct gensec_security_ops **ops
 195                         = gensec_use_kerberos_mechs(conn, backends, conn->server_credentials);
 196                 int i, j = 0;
 197                 for (i = 0; ops && ops[i]; i++) {
 198                         if (!lp_parm_bool(conn->lp_ctx,  NULL, "gensec", ops[i]->name, ops[i]->enabled))
 199                                 continue;
 200
 201                         if (ops[i]->sasl_name && ops[i]->server_start) {
 202                                 char *sasl_name = talloc_strdup(conn, ops[i]->sasl_name);
 203
 204                                 if (!sasl_name) {
 205                                         return NT_STATUS_NO_MEMORY;
 206                                 }
 207                                 sasl_mechs = talloc_realloc(conn, sasl_mechs, char *, j + 2);
 208                                 if (!sasl_mechs) {
 209                                         return NT_STATUS_NO_MEMORY;
 210                                 }
 211                                 sasl_mechs[j] = sasl_name;
 212                                 talloc_steal(sasl_mechs, sasl_name);
 213                                 sasl_mechs[j+1] = NULL;
 214                                 j++;
 215                         }
 216                 }
 217                 talloc_unlink(conn, ops);
 218                 ldb_set_opaque(conn->ldb, "supportedSASLMechanims", sasl_mechs);
 219         }
 220
 221         return NT_STATUS_OK;
 222 }
 223
 224 struct ldapsrv_reply *ldapsrv_init_reply(struct ldapsrv_call *call, uint8_t type)
 225 {
 226         struct ldapsrv_reply *reply;
 227
 228         reply = talloc(call, struct ldapsrv_reply);
 229         if (!reply) {
 230                 return NULL;
 231         }
 232         reply->msg = talloc(reply, struct ldap_message);
 233         if (reply->msg == NULL) {
 234                 talloc_free(reply);
 235                 return NULL;
 236         }
 237
 238         reply->msg->messageid = call->request->messageid;
 239         reply->msg->type = type;
 240         reply->msg->controls = NULL;
 241
 242         return reply;
 243 }
 244
 245 void ldapsrv_queue_reply(struct ldapsrv_call *call, struct ldapsrv_reply *reply)
 246 {
 247         DLIST_ADD_END(call->replies, reply, struct ldapsrv_reply *);
 248 }
 249
 250 static NTSTATUS ldapsrv_unwilling(struct ldapsrv_call *call, int error)
 251 {
 252         struct ldapsrv_reply *reply;
 253         struct ldap_ExtendedResponse *r;
 254
 255         DEBUG(10,("Unwilling type[%d] id[%d]\n", call->request->type, call->request->messageid));
 256
 257         reply = ldapsrv_init_reply(call, LDAP_TAG_ExtendedResponse);
 258         if (!reply) {
 259                 return NT_STATUS_NO_MEMORY;
 260         }
 261
 262         r = &reply->msg->r.ExtendedResponse;
 263         r->response.resultcode = error;
 264         r->response.dn = NULL;
 265         r->response.errormessage = NULL;
 266         r->response.referral = NULL;
 267         r->oid = NULL;
 268         r->value = NULL;
 269
 270         ldapsrv_queue_reply(call, reply);
 271         return NT_STATUS_OK;
 272 }
 273
 274 static NTSTATUS ldapsrv_SearchRequest(struct ldapsrv_call *call)
 275 {
 276         struct ldap_SearchRequest *req = &call->request->r.SearchRequest;
 277         struct ldap_SearchResEntry *ent;
 278         struct ldap_Result *done;
 279         struct ldapsrv_reply *ent_r, *done_r;
 280         TALLOC_CTX *local_ctx;
 281         struct ldb_context *samdb = talloc_get_type(call->conn->ldb, struct ldb_context);
 282         struct ldb_dn *basedn;
 283         struct ldb_result *res = NULL;
 284         struct ldb_request *lreq;
 285         struct ldb_control *search_control;
 286         struct ldb_search_options_control *search_options;
 287         struct ldb_control *extended_dn_control;
 288         struct ldb_extended_dn_control *extended_dn_decoded = NULL;
 289         enum ldb_scope scope = LDB_SCOPE_DEFAULT;
 290         const char **attrs = NULL;
 291         const char *scope_str, *errstr = NULL;
 292         int success_limit = 1;
 293         int result = -1;
 294         int ldb_ret = -1;
 295         int i, j;
 296         int extended_type = 1;
 297
 298         DEBUG(10, ("SearchRequest"));
 299         DEBUGADD(10, (" basedn: %s", req->basedn));
 300         DEBUGADD(10, (" filter: %s\n", ldb_filter_from_tree(call, req->tree)));
 301
 302         local_ctx = talloc_new(call);
 303         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 304
 305         basedn = ldb_dn_new(local_ctx, samdb, req->basedn);
 306         VALID_DN_SYNTAX(basedn);
 307
 308         DEBUG(10, ("SearchRequest: basedn: [%s]\n", req->basedn));
 309         DEBUG(10, ("SearchRequest: filter: [%s]\n", ldb_filter_from_tree(call, req->tree)));
 310
 311         switch (req->scope) {
 312                 case LDAP_SEARCH_SCOPE_BASE:
 313                         scope_str = "BASE";
 314                         scope = LDB_SCOPE_BASE;
 315                         success_limit = 0;
 316                         break;
 317                 case LDAP_SEARCH_SCOPE_SINGLE:
 318                         scope_str = "ONE";
 319                         scope = LDB_SCOPE_ONELEVEL;
 320                         success_limit = 0;
 321                         break;
 322                 case LDAP_SEARCH_SCOPE_SUB:
 323                         scope_str = "SUB";
 324                         scope = LDB_SCOPE_SUBTREE;
 325                         success_limit = 0;
 326                         break;
 327                 default:
 328                         result = LDAP_PROTOCOL_ERROR;
 329                         map_ldb_error(local_ctx, LDB_ERR_PROTOCOL_ERROR,
 330                                 &errstr);
 331                         errstr = talloc_asprintf(local_ctx,
 332                                 "%s. Invalid scope", errstr);
 333                         goto reply;
 334         }
 335         DEBUG(10,("SearchRequest: scope: [%s]\n", scope_str));
 336
 337         if (req->num_attributes >= 1) {
 338                 attrs = talloc_array(local_ctx, const char *, req->num_attributes+1);
 339                 NT_STATUS_HAVE_NO_MEMORY(attrs);
 340
 341                 for (i=0; i < req->num_attributes; i++) {
 342                         DEBUG(10,("SearchRequest: attrs: [%s]\n",req->attributes[i]));
 343                         attrs[i] = req->attributes[i];
 344                 }
 345                 attrs[i] = NULL;
 346         }
 347
 348         DEBUG(5,("ldb_request %s dn=%s filter=%s\n",
 349                  scope_str, req->basedn, ldb_filter_from_tree(call, req->tree)));
 350
 351         res = talloc_zero(local_ctx, struct ldb_result);
 352         NT_STATUS_HAVE_NO_MEMORY(res);
 353
 354         ldb_ret = ldb_build_search_req_ex(&lreq, samdb, local_ctx,
 355                                           basedn, scope,
 356                                           req->tree, attrs,
 357                                           call->request->controls,
 358                                           res, ldb_search_default_callback,
 359                                           NULL);
 360
 361         if (ldb_ret != LDB_SUCCESS) {
 362                 goto reply;
 363         }
 364
 365         if (call->conn->global_catalog) {
 366                 search_control = ldb_request_get_control(lreq, LDB_CONTROL_SEARCH_OPTIONS_OID);
 367
 368                 search_options = NULL;
 369                 if (search_control) {
 370                         search_options = talloc_get_type(search_control->data, struct ldb_search_options_control);
 371                         search_options->search_options |= LDB_SEARCH_OPTION_PHANTOM_ROOT;
 372                 } else {
 373                         search_options = talloc(lreq, struct ldb_search_options_control);
 374                         NT_STATUS_HAVE_NO_MEMORY(search_options);
 375                         search_options->search_options = LDB_SEARCH_OPTION_PHANTOM_ROOT;
 376                         ldb_request_add_control(lreq, LDB_CONTROL_SEARCH_OPTIONS_OID, false, search_options);
 377                 }
 378         }
 379
 380         extended_dn_control = ldb_request_get_control(lreq, LDB_CONTROL_EXTENDED_DN_OID);
 381
 382         if (extended_dn_control) {
 383                 if (extended_dn_control->data) {
 384                         extended_dn_decoded = talloc_get_type(extended_dn_control->data, struct ldb_extended_dn_control);
 385                         extended_type = extended_dn_decoded->type;
 386                 } else {
 387                         extended_type = 0;
 388                 }
 389         }
 390
 391         ldb_set_timeout(samdb, lreq, req->timelimit);
 392
 393         ldb_ret = ldb_request(samdb, lreq);
 394
 395         if (ldb_ret != LDB_SUCCESS) {
 396                 goto reply;
 397         }
 398
 399         ldb_ret = ldb_wait(lreq->handle, LDB_WAIT_ALL);
 400
 401         if (ldb_ret == LDB_SUCCESS) {
 402                 for (i = 0; i < res->count; i++) {
 403                         ent_r = ldapsrv_init_reply(call, LDAP_TAG_SearchResultEntry);
 404                         NT_STATUS_HAVE_NO_MEMORY(ent_r);
 405
 406                         /* Better to have the whole message kept here,
 407                          * than to find someone further up didn't put
 408                          * a value in the right spot in the talloc tree */
 409                         talloc_steal(ent_r, res->msgs[i]);
 410
 411                         ent = &ent_r->msg->r.SearchResultEntry;
 412                         ent->dn = ldb_dn_get_extended_linearized(ent_r, res->msgs[i]->dn, extended_type);
 413                         ent->num_attributes = 0;
 414                         ent->attributes = NULL;
 415                         if (res->msgs[i]->num_elements == 0) {
 416                                 goto queue_reply;
 417                         }
 418                         ent->num_attributes = res->msgs[i]->num_elements;
 419                         ent->attributes = talloc_array(ent_r, struct ldb_message_element, ent->num_attributes);
 420                         NT_STATUS_HAVE_NO_MEMORY(ent->attributes);
 421                         for (j=0; j < ent->num_attributes; j++) {
 422                                 ent->attributes[j].name = res->msgs[i]->elements[j].name;
 423                                 ent->attributes[j].num_values = 0;
 424                                 ent->attributes[j].values = NULL;
 425                                 if (req->attributesonly && (res->msgs[i]->elements[j].num_values == 0)) {
 426                                         continue;
 427                                 }
 428                                 ent->attributes[j].num_values = res->msgs[i]->elements[j].num_values;
 429                                 ent->attributes[j].values = res->msgs[i]->elements[j].values;
 430                         }
 431 queue_reply:
 432                         ldapsrv_queue_reply(call, ent_r);
 433                 }
 434         }
 435
 436 reply:
 437         done_r = ldapsrv_init_reply(call, LDAP_TAG_SearchResultDone);
 438         NT_STATUS_HAVE_NO_MEMORY(done_r);
 439
 440         done = &done_r->msg->r.SearchResultDone;
 441         done->dn = NULL;
 442         done->referral = NULL;
 443
 444         if (result != -1) {
 445         } else if (ldb_ret == LDB_SUCCESS) {
 446                 if (res->count >= success_limit) {
 447                         DEBUG(10,("SearchRequest: results: [%d]\n", res->count));
 448                         result = LDAP_SUCCESS;
 449                         errstr = NULL;
 450                 }
 451                 if (res->controls) {
 452                         done_r->msg->controls = res->controls;
 453                         talloc_steal(done_r, res->controls);
 454                 }
 455         } else {
 456                 DEBUG(10,("SearchRequest: error\n"));
 457                 result = map_ldb_error(local_ctx, ldb_ret, &errstr);
 458         }
 459
 460         done->resultcode = result;
 461         done->errormessage = (errstr?talloc_strdup(done_r, errstr):NULL);
 462
 463         talloc_free(local_ctx);
 464
 465         ldapsrv_queue_reply(call, done_r);
 466         return NT_STATUS_OK;
 467 }
 468
 469 static NTSTATUS ldapsrv_ModifyRequest(struct ldapsrv_call *call)
 470 {
 471         struct ldap_ModifyRequest *req = &call->request->r.ModifyRequest;
 472         struct ldap_Result *modify_result;
 473         struct ldapsrv_reply *modify_reply;
 474         TALLOC_CTX *local_ctx;
 475         struct ldb_context *samdb = call->conn->ldb;
 476         struct ldb_message *msg = NULL;
 477         struct ldb_dn *dn;
 478         const char *errstr = NULL;
 479         int result = LDAP_SUCCESS;
 480         int ldb_ret;
 481         int i,j;
 482
 483         DEBUG(10, ("ModifyRequest"));
 484         DEBUGADD(10, (" dn: %s", req->dn));
 485
 486         local_ctx = talloc_named(call, 0, "ModifyRequest local memory context");
 487         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 488
 489         dn = ldb_dn_new(local_ctx, samdb, req->dn);
 490         VALID_DN_SYNTAX(dn);
 491
 492         DEBUG(10, ("ModifyRequest: dn: [%s]\n", req->dn));
 493
 494         msg = talloc(local_ctx, struct ldb_message);
 495         NT_STATUS_HAVE_NO_MEMORY(msg);
 496
 497         msg->dn = dn;
 498         msg->num_elements = 0;
 499         msg->elements = NULL;
 500
 501         if (req->num_mods > 0) {
 502                 msg->num_elements = req->num_mods;
 503                 msg->elements = talloc_array(msg, struct ldb_message_element, req->num_mods);
 504                 NT_STATUS_HAVE_NO_MEMORY(msg->elements);
 505
 506                 for (i=0; i < msg->num_elements; i++) {
 507                         msg->elements[i].name = discard_const_p(char, req->mods[i].attrib.name);
 508                         msg->elements[i].num_values = 0;
 509                         msg->elements[i].values = NULL;
 510
 511                         switch (req->mods[i].type) {
 512                         default:
 513                                 result = LDAP_PROTOCOL_ERROR;
 514                                 map_ldb_error(local_ctx,
 515                                         LDB_ERR_PROTOCOL_ERROR, &errstr);
 516                                 errstr = talloc_asprintf(local_ctx,
 517                                         "%s. Invalid LDAP_MODIFY_* type", errstr);
 518                                 goto reply;
 519                         case LDAP_MODIFY_ADD:
 520                                 msg->elements[i].flags = LDB_FLAG_MOD_ADD;
 521                                 break;
 522                         case LDAP_MODIFY_DELETE:
 523                                 msg->elements[i].flags = LDB_FLAG_MOD_DELETE;
 524                                 break;
 525                         case LDAP_MODIFY_REPLACE:
 526                                 msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
 527                                 break;
 528                         }
 529
 530                         msg->elements[i].num_values = req->mods[i].attrib.num_values;
 531                         if (msg->elements[i].num_values > 0) {
 532                                 msg->elements[i].values = talloc_array(msg->elements, struct ldb_val,
 533                                                                        msg->elements[i].num_values);
 534                                 NT_STATUS_HAVE_NO_MEMORY(msg->elements[i].values);
 535
 536                                 for (j=0; j < msg->elements[i].num_values; j++) {
 537                                         if (!(req->mods[i].attrib.values[j].length > 0)) {
 538                                                 result = LDAP_OTHER;
 539
 540                                                 map_ldb_error(local_ctx,
 541                                                         LDB_ERR_OTHER, &errstr);
 542                                                 errstr = talloc_asprintf(local_ctx,
 543                                                         "%s. Empty attribute values not allowed", errstr);
 544                                                 goto reply;
 545                                         }
 546                                         msg->elements[i].values[j].length = req->mods[i].attrib.values[j].length;
 547                                         msg->elements[i].values[j].data = req->mods[i].attrib.values[j].data;
 548                                 }
 549                         }
 550                 }
 551         } else {
 552                 result = LDAP_OTHER;
 553                 map_ldb_error(local_ctx, LDB_ERR_OTHER, &errstr);
 554                 errstr = talloc_asprintf(local_ctx,
 555                         "%s. No mods are not allowed", errstr);
 556                 goto reply;
 557         }
 558
 559 reply:
 560         modify_reply = ldapsrv_init_reply(call, LDAP_TAG_ModifyResponse);
 561         NT_STATUS_HAVE_NO_MEMORY(modify_reply);
 562
 563         if (result == LDAP_SUCCESS) {
 564                 ldb_ret = ldb_modify(samdb, msg);
 565                 result = map_ldb_error(local_ctx, ldb_ret, &errstr);
 566         }
 567
 568         modify_result = &modify_reply->msg->r.AddResponse;
 569         modify_result->dn = NULL;
 570         modify_result->resultcode = result;
 571         modify_result->errormessage = (errstr?talloc_strdup(modify_reply, errstr):NULL);
 572         modify_result->referral = NULL;
 573
 574         talloc_free(local_ctx);
 575
 576         ldapsrv_queue_reply(call, modify_reply);
 577         return NT_STATUS_OK;
 578
 579 }
 580
 581 static NTSTATUS ldapsrv_AddRequest(struct ldapsrv_call *call)
 582 {
 583         struct ldap_AddRequest *req = &call->request->r.AddRequest;
 584         struct ldap_Result *add_result;
 585         struct ldapsrv_reply *add_reply;
 586         TALLOC_CTX *local_ctx;
 587         struct ldb_context *samdb = call->conn->ldb;
 588         struct ldb_message *msg = NULL;
 589         struct ldb_dn *dn;
 590         const char *errstr = NULL;
 591         int result = LDAP_SUCCESS;
 592         int ldb_ret;
 593         int i,j;
 594
 595         DEBUG(10, ("AddRequest"));
 596         DEBUGADD(10, (" dn: %s", req->dn));
 597
 598         local_ctx = talloc_named(call, 0, "AddRequest local memory context");
 599         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 600
 601         dn = ldb_dn_new(local_ctx, samdb, req->dn);
 602         VALID_DN_SYNTAX(dn);
 603
 604         DEBUG(10, ("AddRequest: dn: [%s]\n", req->dn));
 605
 606         msg = talloc(local_ctx, struct ldb_message);
 607         NT_STATUS_HAVE_NO_MEMORY(msg);
 608
 609         msg->dn = dn;
 610         msg->num_elements = 0;
 611         msg->elements = NULL;
 612
 613         if (req->num_attributes > 0) {
 614                 msg->num_elements = req->num_attributes;
 615                 msg->elements = talloc_array(msg, struct ldb_message_element, msg->num_elements);
 616                 NT_STATUS_HAVE_NO_MEMORY(msg->elements);
 617
 618                 for (i=0; i < msg->num_elements; i++) {
 619                         msg->elements[i].name = discard_const_p(char, req->attributes[i].name);
 620                         msg->elements[i].flags = 0;
 621                         msg->elements[i].num_values = 0;
 622                         msg->elements[i].values = NULL;
 623
 624                         if (req->attributes[i].num_values > 0) {
 625                                 msg->elements[i].num_values = req->attributes[i].num_values;
 626                                 msg->elements[i].values = talloc_array(msg->elements, struct ldb_val,
 627                                                                        msg->elements[i].num_values);
 628                                 NT_STATUS_HAVE_NO_MEMORY(msg->elements[i].values);
 629
 630                                 for (j=0; j < msg->elements[i].num_values; j++) {
 631                                         if (!(req->attributes[i].values[j].length > 0)) {
 632                                                 result = LDAP_OTHER;
 633                                                 map_ldb_error(local_ctx,
 634                                                         LDB_ERR_OTHER, &errstr);
 635                                                 errstr = talloc_asprintf(local_ctx,
 636                                                         "%s. Empty attribute values not allowed", errstr);
 637                                                 goto reply;
 638                                         }
 639                                         msg->elements[i].values[j].length = req->attributes[i].values[j].length;
 640                                         msg->elements[i].values[j].data = req->attributes[i].values[j].data;
 641                                 }
 642                         } else {
 643                                 result = LDAP_OTHER;
 644                                 map_ldb_error(local_ctx, LDB_ERR_OTHER, &errstr);
 645                                 errstr = talloc_asprintf(local_ctx,
 646                                         "%s. No attribute values are not allowed", errstr);
 647                                 goto reply;
 648                         }
 649                 }
 650         } else {
 651                 result = LDAP_OTHER;
 652                 map_ldb_error(local_ctx, LDB_ERR_OTHER, &errstr);
 653                 errstr = talloc_asprintf(local_ctx,
 654                         "%s. No attributes are not allowed", errstr);
 655                 goto reply;
 656         }
 657
 658 reply:
 659         add_reply = ldapsrv_init_reply(call, LDAP_TAG_AddResponse);
 660         NT_STATUS_HAVE_NO_MEMORY(add_reply);
 661
 662         if (result == LDAP_SUCCESS) {
 663                 ldb_ret = ldb_add(samdb, msg);
 664                 result = map_ldb_error(local_ctx, ldb_ret, &errstr);
 665         }
 666
 667         add_result = &add_reply->msg->r.AddResponse;
 668         add_result->dn = NULL;
 669         add_result->resultcode = result;
 670         add_result->errormessage = (errstr?talloc_strdup(add_reply,errstr):NULL);
 671         add_result->referral = NULL;
 672
 673         talloc_free(local_ctx);
 674
 675         ldapsrv_queue_reply(call, add_reply);
 676         return NT_STATUS_OK;
 677
 678 }
 679
 680 static NTSTATUS ldapsrv_DelRequest(struct ldapsrv_call *call)
 681 {
 682         struct ldap_DelRequest *req = &call->request->r.DelRequest;
 683         struct ldap_Result *del_result;
 684         struct ldapsrv_reply *del_reply;
 685         TALLOC_CTX *local_ctx;
 686         struct ldb_context *samdb = call->conn->ldb;
 687         struct ldb_dn *dn;
 688         const char *errstr = NULL;
 689         int result = LDAP_SUCCESS;
 690         int ldb_ret;
 691
 692         DEBUG(10, ("DelRequest"));
 693         DEBUGADD(10, (" dn: %s", req->dn));
 694
 695         local_ctx = talloc_named(call, 0, "DelRequest local memory context");
 696         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 697
 698         dn = ldb_dn_new(local_ctx, samdb, req->dn);
 699         VALID_DN_SYNTAX(dn);
 700
 701         DEBUG(10, ("DelRequest: dn: [%s]\n", req->dn));
 702
 703 reply:
 704         del_reply = ldapsrv_init_reply(call, LDAP_TAG_DelResponse);
 705         NT_STATUS_HAVE_NO_MEMORY(del_reply);
 706
 707         if (result == LDAP_SUCCESS) {
 708                 ldb_ret = ldb_delete(samdb, dn);
 709                 result = map_ldb_error(local_ctx, ldb_ret, &errstr);
 710         }
 711
 712         del_result = &del_reply->msg->r.DelResponse;
 713         del_result->dn = NULL;
 714         del_result->resultcode = result;
 715         del_result->errormessage = (errstr?talloc_strdup(del_reply,errstr):NULL);
 716         del_result->referral = NULL;
 717
 718         talloc_free(local_ctx);
 719
 720         ldapsrv_queue_reply(call, del_reply);
 721         return NT_STATUS_OK;
 722 }
 723
 724 static NTSTATUS ldapsrv_ModifyDNRequest(struct ldapsrv_call *call)
 725 {
 726         struct ldap_ModifyDNRequest *req = &call->request->r.ModifyDNRequest;
 727         struct ldap_Result *modifydn;
 728         struct ldapsrv_reply *modifydn_r;
 729         TALLOC_CTX *local_ctx;
 730         struct ldb_context *samdb = call->conn->ldb;
 731         struct ldb_dn *olddn, *newdn=NULL, *newrdn;
 732         struct ldb_dn *parentdn = NULL;
 733         const char *errstr = NULL;
 734         int result = LDAP_SUCCESS;
 735         int ldb_ret;
 736
 737         DEBUG(10, ("ModifyDNRequest"));
 738         DEBUGADD(10, (" dn: %s", req->dn));
 739         DEBUGADD(10, (" newrdn: %s", req->newrdn));
 740
 741         local_ctx = talloc_named(call, 0, "ModifyDNRequest local memory context");
 742         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 743
 744         olddn = ldb_dn_new(local_ctx, samdb, req->dn);
 745         VALID_DN_SYNTAX(olddn);
 746
 747         newrdn = ldb_dn_new(local_ctx, samdb, req->newrdn);
 748         VALID_DN_SYNTAX(newrdn);
 749
 750         DEBUG(10, ("ModifyDNRequest: olddn: [%s]\n", req->dn));
 751         DEBUG(10, ("ModifyDNRequest: newrdn: [%s]\n", req->newrdn));
 752
 753         /* we can't handle the rename if we should not remove the old dn */
 754         if (!req->deleteolddn) {
 755                 result = LDAP_UNWILLING_TO_PERFORM;
 756                 map_ldb_error(local_ctx, LDB_ERR_UNWILLING_TO_PERFORM, &errstr);
 757                 errstr = talloc_asprintf(local_ctx,
 758                         "%s. Old RDN must be deleted", errstr);
 759                 goto reply;
 760         }
 761
 762         if (req->newsuperior) {
 763                 parentdn = ldb_dn_new(local_ctx, samdb, req->newsuperior);
 764                 VALID_DN_SYNTAX(parentdn);
 765                 DEBUG(10, ("ModifyDNRequest: newsuperior: [%s]\n", req->newsuperior));
 766
 767                 if (ldb_dn_get_comp_num(parentdn) < 1) {
 768                         result = LDAP_AFFECTS_MULTIPLE_DSAS;
 769                         map_ldb_error(local_ctx, LDB_ERR_AFFECTS_MULTIPLE_DSAS,
 770                                 &errstr);
 771                         errstr = talloc_asprintf(local_ctx,
 772                                 "%s. Error new Superior DN invalid", errstr);
 773                         goto reply;
 774                 }
 775         }
 776
 777         if (!parentdn) {
 778                 parentdn = ldb_dn_get_parent(local_ctx, olddn);
 779                 NT_STATUS_HAVE_NO_MEMORY(parentdn);
 780         }
 781
 782         if ( ! ldb_dn_add_child_fmt(parentdn,
 783                                 "%s=%s",
 784                                 ldb_dn_get_rdn_name(newrdn),
 785                                 (char *)ldb_dn_get_rdn_val(newrdn)->data)) {
 786                 result = LDAP_OTHER;
 787                 goto reply;
 788         }
 789         newdn = parentdn;
 790
 791 reply:
 792         modifydn_r = ldapsrv_init_reply(call, LDAP_TAG_ModifyDNResponse);
 793         NT_STATUS_HAVE_NO_MEMORY(modifydn_r);
 794
 795         if (result == LDAP_SUCCESS) {
 796                 ldb_ret = ldb_rename(samdb, olddn, newdn);
 797                 result = map_ldb_error(local_ctx, ldb_ret, &errstr);
 798         }
 799
 800         modifydn = &modifydn_r->msg->r.ModifyDNResponse;
 801         modifydn->dn = NULL;
 802         modifydn->resultcode = result;
 803         modifydn->errormessage = (errstr?talloc_strdup(modifydn_r,errstr):NULL);
 804         modifydn->referral = NULL;
 805
 806         talloc_free(local_ctx);
 807
 808         ldapsrv_queue_reply(call, modifydn_r);
 809         return NT_STATUS_OK;
 810 }
 811
 812 static NTSTATUS ldapsrv_CompareRequest(struct ldapsrv_call *call)
 813 {
 814         struct ldap_CompareRequest *req = &call->request->r.CompareRequest;
 815         struct ldap_Result *compare;
 816         struct ldapsrv_reply *compare_r;
 817         TALLOC_CTX *local_ctx;
 818         struct ldb_context *samdb = call->conn->ldb;
 819         struct ldb_result *res = NULL;
 820         struct ldb_dn *dn;
 821         const char *attrs[1];
 822         const char *errstr = NULL;
 823         const char *filter = NULL;
 824         int result = LDAP_SUCCESS;
 825         int ldb_ret;
 826
 827         DEBUG(10, ("CompareRequest"));
 828         DEBUGADD(10, (" dn: %s", req->dn));
 829
 830         local_ctx = talloc_named(call, 0, "CompareRequest local_memory_context");
 831         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 832
 833         dn = ldb_dn_new(local_ctx, samdb, req->dn);
 834         VALID_DN_SYNTAX(dn);
 835
 836         DEBUG(10, ("CompareRequest: dn: [%s]\n", req->dn));
 837         filter = talloc_asprintf(local_ctx, "(%s=%*s)", req->attribute,
 838                                  (int)req->value.length, req->value.data);
 839         NT_STATUS_HAVE_NO_MEMORY(filter);
 840
 841         DEBUGADD(10, ("CompareRequest: attribute: [%s]\n", filter));
 842
 843         attrs[0] = NULL;
 844
 845 reply:
 846         compare_r = ldapsrv_init_reply(call, LDAP_TAG_CompareResponse);
 847         NT_STATUS_HAVE_NO_MEMORY(compare_r);
 848
 849         if (result == LDAP_SUCCESS) {
 850                 ldb_ret = ldb_search(samdb, local_ctx, &res,
 851                                      dn, LDB_SCOPE_BASE, attrs, "%s", filter);
 852                 if (ldb_ret != LDB_SUCCESS) {
 853                         result = map_ldb_error(local_ctx, ldb_ret, &errstr);
 854                         DEBUG(10,("CompareRequest: error: %s\n", errstr));
 855                 } else if (res->count == 0) {
 856                         DEBUG(10,("CompareRequest: doesn't matched\n"));
 857                         result = LDAP_COMPARE_FALSE;
 858                         errstr = NULL;
 859                 } else if (res->count == 1) {
 860                         DEBUG(10,("CompareRequest: matched\n"));
 861                         result = LDAP_COMPARE_TRUE;
 862                         errstr = NULL;
 863                 } else if (res->count > 1) {
 864                         result = LDAP_OTHER;
 865                         map_ldb_error(local_ctx, LDB_ERR_OTHER, &errstr);
 866                         errstr = talloc_asprintf(local_ctx,
 867                                 "%s. Too many objects match!", errstr);
 868                         DEBUG(10,("CompareRequest: %d results: %s\n", res->count, errstr));
 869                 }
 870         }
 871
 872         compare = &compare_r->msg->r.CompareResponse;
 873         compare->dn = NULL;
 874         compare->resultcode = result;
 875         compare->errormessage = (errstr?talloc_strdup(compare_r,errstr):NULL);
 876         compare->referral = NULL;
 877
 878         talloc_free(local_ctx);
 879
 880         ldapsrv_queue_reply(call, compare_r);
 881         return NT_STATUS_OK;
 882 }
 883
 884 static NTSTATUS ldapsrv_AbandonRequest(struct ldapsrv_call *call)
 885 {
 886 /*      struct ldap_AbandonRequest *req = &call->request.r.AbandonRequest;*/
 887         DEBUG(10, ("AbandonRequest\n"));
 888         return NT_STATUS_OK;
 889 }
 890
 891 NTSTATUS ldapsrv_do_call(struct ldapsrv_call *call)
 892 {
 893         int i;
 894         struct ldap_message *msg = call->request;
 895         /* Check for undecoded critical extensions */
 896         for (i=0; msg->controls && msg->controls[i]; i++) {
 897                 if (!msg->controls_decoded[i] &&
 898                     msg->controls[i]->critical) {
 899                         DEBUG(3, ("ldapsrv_do_call: Critical extension %s is not known to this server\n",
 900                                   msg->controls[i]->oid));
 901                         return ldapsrv_unwilling(call, LDAP_UNAVAILABLE_CRITICAL_EXTENSION);
 902                 }
 903         }
 904
 905         switch(call->request->type) {
 906         case LDAP_TAG_BindRequest:
 907                 return ldapsrv_BindRequest(call);
 908         case LDAP_TAG_UnbindRequest:
 909                 return ldapsrv_UnbindRequest(call);
 910         case LDAP_TAG_SearchRequest:
 911                 return ldapsrv_SearchRequest(call);
 912         case LDAP_TAG_ModifyRequest:
 913                 return ldapsrv_ModifyRequest(call);
 914         case LDAP_TAG_AddRequest:
 915                 return ldapsrv_AddRequest(call);
 916         case LDAP_TAG_DelRequest:
 917                 return ldapsrv_DelRequest(call);
 918         case LDAP_TAG_ModifyDNRequest:
 919                 return ldapsrv_ModifyDNRequest(call);
 920         case LDAP_TAG_CompareRequest:
 921                 return ldapsrv_CompareRequest(call);
 922         case LDAP_TAG_AbandonRequest:
 923                 return ldapsrv_AbandonRequest(call);
 924         case LDAP_TAG_ExtendedRequest:
 925                 return ldapsrv_ExtendedRequest(call);
 926         default:
 927                 return ldapsrv_unwilling(call, 2);
 928         }
 929 }