source4/ldap_server/ldap_backend.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    LDAP server
   4    Copyright (C) Stefan Metzmacher 2004
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "includes.h"
  21 #include "ldap_server/ldap_server.h"
  22 #include "../lib/util/dlinklist.h"
  23 #include "libcli/ldap/ldap.h"
  24 #include "auth/credentials/credentials.h"
  25 #include "auth/gensec/gensec.h"
  26 #include "param/param.h"
  27 #include "smbd/service_stream.h"
  28 #include "dsdb/samdb/samdb.h"
  29 #include "lib/ldb/include/ldb_errors.h"
  30 #include "lib/ldb_wrap.h"
  31
  32 #define VALID_DN_SYNTAX(dn,i) do {\
  33         if (!(dn)) {\
  34                 return NT_STATUS_NO_MEMORY;\
  35         } else if ( ! ldb_dn_validate(dn)) {\
  36                 result = LDAP_INVALID_DN_SYNTAX;\
  37                 errstr = "Invalid DN format";\
  38                 goto reply;\
  39         } else if (ldb_dn_get_comp_num(dn) < (i)) {\
  40                 result = LDAP_INVALID_DN_SYNTAX;\
  41                 errstr = "Invalid DN (" #i " components needed for '" #dn "')";\
  42                 goto reply;\
  43         }\
  44 } while(0)
  45
  46 static int map_ldb_error(struct ldb_context *ldb, int err, const char **errstring)
  47 {
  48         *errstring = ldb_errstring(ldb);
  49
  50         /* its 1:1 for now */
  51         return err;
  52 }
  53
  54 /*
  55   connect to the sam database
  56 */
  57 NTSTATUS ldapsrv_backend_Init(struct ldapsrv_connection *conn)
  58 {
  59         conn->ldb = ldb_wrap_connect(conn,
  60                                      conn->connection->event.ctx,
  61                                      conn->lp_ctx,
  62                                      lp_sam_url(conn->lp_ctx),
  63                                      conn->session_info,
  64                                      samdb_credentials(conn, conn->connection->event.ctx, conn->lp_ctx),
  65                                      conn->global_catalog ? LDB_FLG_RDONLY : 0, NULL);
  66         if (conn->ldb == NULL) {
  67                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
  68         }
  69
  70         if (conn->server_credentials) {
  71                 char **sasl_mechs = NULL;
  72                 struct gensec_security_ops **backends = gensec_security_all();
  73                 struct gensec_security_ops **ops
  74                         = gensec_use_kerberos_mechs(conn, backends, conn->server_credentials);
  75                 int i, j = 0;
  76                 for (i = 0; ops && ops[i]; i++) {
  77                         if (!gensec_security_ops_enabled(ops[i], conn->lp_ctx))
  78                                 continue;
  79
  80                         if (ops[i]->sasl_name && ops[i]->server_start) {
  81                                 char *sasl_name = talloc_strdup(conn, ops[i]->sasl_name);
  82
  83                                 if (!sasl_name) {
  84                                         return NT_STATUS_NO_MEMORY;
  85                                 }
  86                                 sasl_mechs = talloc_realloc(conn, sasl_mechs, char *, j + 2);
  87                                 if (!sasl_mechs) {
  88                                         return NT_STATUS_NO_MEMORY;
  89                                 }
  90                                 sasl_mechs[j] = sasl_name;
  91                                 talloc_steal(sasl_mechs, sasl_name);
  92                                 sasl_mechs[j+1] = NULL;
  93                                 j++;
  94                         }
  95                 }
  96                 talloc_free(ops);
  97                 ldb_set_opaque(conn->ldb, "supportedSASLMechanims", sasl_mechs);
  98         }
  99
 100         return NT_STATUS_OK;
 101 }
 102
 103 struct ldapsrv_reply *ldapsrv_init_reply(struct ldapsrv_call *call, uint8_t type)
 104 {
 105         struct ldapsrv_reply *reply;
 106
 107         reply = talloc(call, struct ldapsrv_reply);
 108         if (!reply) {
 109                 return NULL;
 110         }
 111         reply->msg = talloc(reply, struct ldap_message);
 112         if (reply->msg == NULL) {
 113                 talloc_free(reply);
 114                 return NULL;
 115         }
 116
 117         reply->msg->messageid = call->request->messageid;
 118         reply->msg->type = type;
 119         reply->msg->controls = NULL;
 120
 121         return reply;
 122 }
 123
 124 void ldapsrv_queue_reply(struct ldapsrv_call *call, struct ldapsrv_reply *reply)
 125 {
 126         DLIST_ADD_END(call->replies, reply, struct ldapsrv_reply *);
 127 }
 128
 129 static NTSTATUS ldapsrv_unwilling(struct ldapsrv_call *call, int error)
 130 {
 131         struct ldapsrv_reply *reply;
 132         struct ldap_ExtendedResponse *r;
 133
 134         DEBUG(10,("Unwilling type[%d] id[%d]\n", call->request->type, call->request->messageid));
 135
 136         reply = ldapsrv_init_reply(call, LDAP_TAG_ExtendedResponse);
 137         if (!reply) {
 138                 return NT_STATUS_NO_MEMORY;
 139         }
 140
 141         r = &reply->msg->r.ExtendedResponse;
 142         r->response.resultcode = error;
 143         r->response.dn = NULL;
 144         r->response.errormessage = NULL;
 145         r->response.referral = NULL;
 146         r->oid = NULL;
 147         r->value = NULL;
 148
 149         ldapsrv_queue_reply(call, reply);
 150         return NT_STATUS_OK;
 151 }
 152
 153 static NTSTATUS ldapsrv_SearchRequest(struct ldapsrv_call *call)
 154 {
 155         struct ldap_SearchRequest *req = &call->request->r.SearchRequest;
 156         struct ldap_SearchResEntry *ent;
 157         struct ldap_Result *done;
 158         struct ldapsrv_reply *ent_r, *done_r;
 159         void *local_ctx;
 160         struct ldb_context *samdb = talloc_get_type(call->conn->ldb, struct ldb_context);
 161         struct ldb_dn *basedn;
 162         struct ldb_result *res = NULL;
 163         struct ldb_request *lreq;
 164         struct ldb_control *search_control;
 165         struct ldb_search_options_control *search_options;
 166         enum ldb_scope scope = LDB_SCOPE_DEFAULT;
 167         const char **attrs = NULL;
 168         const char *scope_str, *errstr = NULL;
 169         int success_limit = 1;
 170         int result = -1;
 171         int ldb_ret = -1;
 172         int i, j;
 173
 174         DEBUG(10, ("SearchRequest"));
 175         DEBUGADD(10, (" basedn: %s", req->basedn));
 176         DEBUGADD(10, (" filter: %s\n", ldb_filter_from_tree(call, req->tree)));
 177
 178         local_ctx = talloc_new(call);
 179         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 180
 181         basedn = ldb_dn_new(local_ctx, samdb, req->basedn);
 182         VALID_DN_SYNTAX(basedn, 0);
 183
 184         DEBUG(10, ("SearchRequest: basedn: [%s]\n", req->basedn));
 185         DEBUG(10, ("SearchRequest: filter: [%s]\n", ldb_filter_from_tree(call, req->tree)));
 186
 187         switch (req->scope) {
 188                 case LDAP_SEARCH_SCOPE_BASE:
 189                         scope_str = "BASE";
 190                         scope = LDB_SCOPE_BASE;
 191                         success_limit = 0;
 192                         break;
 193                 case LDAP_SEARCH_SCOPE_SINGLE:
 194                         scope_str = "ONE";
 195                         scope = LDB_SCOPE_ONELEVEL;
 196                         success_limit = 0;
 197                         break;
 198                 case LDAP_SEARCH_SCOPE_SUB:
 199                         scope_str = "SUB";
 200                         scope = LDB_SCOPE_SUBTREE;
 201                         success_limit = 0;
 202                         break;
 203                 default:
 204                         result = LDAP_PROTOCOL_ERROR;
 205                         errstr = "Invalid scope";
 206                         goto reply;
 207         }
 208         DEBUG(10,("SearchRequest: scope: [%s]\n", scope_str));
 209
 210         if (req->num_attributes >= 1) {
 211                 attrs = talloc_array(local_ctx, const char *, req->num_attributes+1);
 212                 NT_STATUS_HAVE_NO_MEMORY(attrs);
 213
 214                 for (i=0; i < req->num_attributes; i++) {
 215                         DEBUG(10,("SearchRequest: attrs: [%s]\n",req->attributes[i]));
 216                         attrs[i] = req->attributes[i];
 217                 }
 218                 attrs[i] = NULL;
 219         }
 220
 221         DEBUG(5,("ldb_request %s dn=%s filter=%s\n",
 222                  scope_str, req->basedn, ldb_filter_from_tree(call, req->tree)));
 223
 224         res = talloc_zero(local_ctx, struct ldb_result);
 225         NT_STATUS_HAVE_NO_MEMORY(res);
 226
 227         ldb_ret = ldb_build_search_req_ex(&lreq, samdb, local_ctx,
 228                                           basedn, scope,
 229                                           req->tree, attrs,
 230                                           call->request->controls,
 231                                           res, ldb_search_default_callback,
 232                                           NULL);
 233
 234         if (ldb_ret != LDB_SUCCESS) {
 235                 goto reply;
 236         }
 237
 238         if (call->conn->global_catalog) {
 239                 search_control = ldb_request_get_control(lreq, LDB_CONTROL_SEARCH_OPTIONS_OID);
 240
 241                 search_options = NULL;
 242                 if (search_control) {
 243                         search_options = talloc_get_type(search_control->data, struct ldb_search_options_control);
 244                         search_options->search_options |= LDB_SEARCH_OPTION_PHANTOM_ROOT;
 245                 } else {
 246                         search_options = talloc(lreq, struct ldb_search_options_control);
 247                         NT_STATUS_HAVE_NO_MEMORY(search_options);
 248                         search_options->search_options = LDB_SEARCH_OPTION_PHANTOM_ROOT;
 249                         ldb_request_add_control(lreq, LDB_CONTROL_SEARCH_OPTIONS_OID, false, search_options);
 250                 }
 251         }
 252         ldb_set_timeout(samdb, lreq, req->timelimit);
 253
 254         ldb_ret = ldb_request(samdb, lreq);
 255
 256         if (ldb_ret != LDB_SUCCESS) {
 257                 goto reply;
 258         }
 259
 260         ldb_ret = ldb_wait(lreq->handle, LDB_WAIT_ALL);
 261
 262         if (ldb_ret == LDB_SUCCESS) {
 263                 for (i = 0; i < res->count; i++) {
 264                         ent_r = ldapsrv_init_reply(call, LDAP_TAG_SearchResultEntry);
 265                         NT_STATUS_HAVE_NO_MEMORY(ent_r);
 266
 267                         /* Better to have the whole message kept here,
 268                          * than to find someone further up didn't put
 269                          * a value in the right spot in the talloc tree */
 270                         talloc_steal(ent_r, res->msgs[i]);
 271
 272                         ent = &ent_r->msg->r.SearchResultEntry;
 273                         ent->dn = ldb_dn_alloc_linearized(ent_r, res->msgs[i]->dn);
 274                         ent->num_attributes = 0;
 275                         ent->attributes = NULL;
 276                         if (res->msgs[i]->num_elements == 0) {
 277                                 goto queue_reply;
 278                         }
 279                         ent->num_attributes = res->msgs[i]->num_elements;
 280                         ent->attributes = talloc_array(ent_r, struct ldb_message_element, ent->num_attributes);
 281                         NT_STATUS_HAVE_NO_MEMORY(ent->attributes);
 282                         for (j=0; j < ent->num_attributes; j++) {
 283                                 ent->attributes[j].name = talloc_steal(ent->attributes, res->msgs[i]->elements[j].name);
 284                                 ent->attributes[j].num_values = 0;
 285                                 ent->attributes[j].values = NULL;
 286                                 if (req->attributesonly && (res->msgs[i]->elements[j].num_values == 0)) {
 287                                         continue;
 288                                 }
 289                                 ent->attributes[j].num_values = res->msgs[i]->elements[j].num_values;
 290                                 ent->attributes[j].values = res->msgs[i]->elements[j].values;
 291                                 talloc_steal(ent->attributes, res->msgs[i]->elements[j].values);
 292                         }
 293 queue_reply:
 294                         ldapsrv_queue_reply(call, ent_r);
 295                 }
 296         }
 297
 298 reply:
 299         done_r = ldapsrv_init_reply(call, LDAP_TAG_SearchResultDone);
 300         NT_STATUS_HAVE_NO_MEMORY(done_r);
 301
 302         done = &done_r->msg->r.SearchResultDone;
 303         done->dn = NULL;
 304         done->referral = NULL;
 305
 306         if (result != -1) {
 307         } else if (ldb_ret == LDB_SUCCESS) {
 308                 if (res->count >= success_limit) {
 309                         DEBUG(10,("SearchRequest: results: [%d]\n", res->count));
 310                         result = LDAP_SUCCESS;
 311                         errstr = NULL;
 312                 }
 313                 if (res->controls) {
 314                         done_r->msg->controls = res->controls;
 315                         talloc_steal(done_r, res->controls);
 316                 }
 317         } else {
 318                 DEBUG(10,("SearchRequest: error\n"));
 319                 result = map_ldb_error(samdb, ldb_ret, &errstr);
 320         }
 321
 322         done->resultcode = result;
 323         done->errormessage = (errstr?talloc_strdup(done_r, errstr):NULL);
 324
 325         talloc_free(local_ctx);
 326
 327         ldapsrv_queue_reply(call, done_r);
 328         return NT_STATUS_OK;
 329 }
 330
 331 static NTSTATUS ldapsrv_ModifyRequest(struct ldapsrv_call *call)
 332 {
 333         struct ldap_ModifyRequest *req = &call->request->r.ModifyRequest;
 334         struct ldap_Result *modify_result;
 335         struct ldapsrv_reply *modify_reply;
 336         void *local_ctx;
 337         struct ldb_context *samdb = call->conn->ldb;
 338         struct ldb_message *msg = NULL;
 339         struct ldb_dn *dn;
 340         const char *errstr = NULL;
 341         int result = LDAP_SUCCESS;
 342         int ldb_ret;
 343         int i,j;
 344
 345         DEBUG(10, ("ModifyRequest"));
 346         DEBUGADD(10, (" dn: %s", req->dn));
 347
 348         local_ctx = talloc_named(call, 0, "ModifyRequest local memory context");
 349         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 350
 351         dn = ldb_dn_new(local_ctx, samdb, req->dn);
 352         VALID_DN_SYNTAX(dn, 0);
 353
 354         DEBUG(10, ("ModifyRequest: dn: [%s]\n", req->dn));
 355
 356         msg = talloc(local_ctx, struct ldb_message);
 357         NT_STATUS_HAVE_NO_MEMORY(msg);
 358
 359         msg->dn = dn;
 360         msg->num_elements = 0;
 361         msg->elements = NULL;
 362
 363         if (req->num_mods > 0) {
 364                 msg->num_elements = req->num_mods;
 365                 msg->elements = talloc_array(msg, struct ldb_message_element, req->num_mods);
 366                 NT_STATUS_HAVE_NO_MEMORY(msg->elements);
 367
 368                 for (i=0; i < msg->num_elements; i++) {
 369                         msg->elements[i].name = discard_const_p(char, req->mods[i].attrib.name);
 370                         msg->elements[i].num_values = 0;
 371                         msg->elements[i].values = NULL;
 372
 373                         switch (req->mods[i].type) {
 374                         default:
 375                                 result = LDAP_PROTOCOL_ERROR;
 376                                 errstr = "Invalid LDAP_MODIFY_* type";
 377                                 goto reply;
 378                         case LDAP_MODIFY_ADD:
 379                                 msg->elements[i].flags = LDB_FLAG_MOD_ADD;
 380                                 break;
 381                         case LDAP_MODIFY_DELETE:
 382                                 msg->elements[i].flags = LDB_FLAG_MOD_DELETE;
 383                                 break;
 384                         case LDAP_MODIFY_REPLACE:
 385                                 msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
 386                                 break;
 387                         }
 388
 389                         msg->elements[i].num_values = req->mods[i].attrib.num_values;
 390                         if (msg->elements[i].num_values > 0) {
 391                                 msg->elements[i].values = talloc_array(msg->elements, struct ldb_val,
 392                                                                        msg->elements[i].num_values);
 393                                 NT_STATUS_HAVE_NO_MEMORY(msg->elements[i].values);
 394
 395                                 for (j=0; j < msg->elements[i].num_values; j++) {
 396                                         if (!(req->mods[i].attrib.values[j].length > 0)) {
 397                                                 result = LDAP_OTHER;
 398                                                 errstr = "Empty attribute values are not allowed";
 399                                                 goto reply;
 400                                         }
 401                                         msg->elements[i].values[j].length = req->mods[i].attrib.values[j].length;
 402                                         msg->elements[i].values[j].data = req->mods[i].attrib.values[j].data;
 403                                 }
 404                         }
 405                 }
 406         } else {
 407                 result = LDAP_OTHER;
 408                 errstr = "No mods are not allowed";
 409                 goto reply;
 410         }
 411
 412 reply:
 413         modify_reply = ldapsrv_init_reply(call, LDAP_TAG_ModifyResponse);
 414         NT_STATUS_HAVE_NO_MEMORY(modify_reply);
 415
 416         if (result == LDAP_SUCCESS) {
 417                 ldb_ret = ldb_modify(samdb, msg);
 418                 result = map_ldb_error(samdb, ldb_ret, &errstr);
 419         }
 420
 421         modify_result = &modify_reply->msg->r.AddResponse;
 422         modify_result->dn = NULL;
 423         modify_result->resultcode = result;
 424         modify_result->errormessage = (errstr?talloc_strdup(modify_reply, errstr):NULL);
 425         modify_result->referral = NULL;
 426
 427         talloc_free(local_ctx);
 428
 429         ldapsrv_queue_reply(call, modify_reply);
 430         return NT_STATUS_OK;
 431
 432 }
 433
 434 static NTSTATUS ldapsrv_AddRequest(struct ldapsrv_call *call)
 435 {
 436         struct ldap_AddRequest *req = &call->request->r.AddRequest;
 437         struct ldap_Result *add_result;
 438         struct ldapsrv_reply *add_reply;
 439         void *local_ctx;
 440         struct ldb_context *samdb = call->conn->ldb;
 441         struct ldb_message *msg = NULL;
 442         struct ldb_dn *dn;
 443         const char *errstr = NULL;
 444         int result = LDAP_SUCCESS;
 445         int ldb_ret;
 446         int i,j;
 447
 448         DEBUG(10, ("AddRequest"));
 449         DEBUGADD(10, (" dn: %s", req->dn));
 450
 451         local_ctx = talloc_named(call, 0, "AddRequest local memory context");
 452         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 453
 454         dn = ldb_dn_new(local_ctx, samdb, req->dn);
 455         VALID_DN_SYNTAX(dn,1);
 456
 457         DEBUG(10, ("AddRequest: dn: [%s]\n", req->dn));
 458
 459         msg = talloc(local_ctx, struct ldb_message);
 460         NT_STATUS_HAVE_NO_MEMORY(msg);
 461
 462         msg->dn = dn;
 463         msg->num_elements = 0;
 464         msg->elements = NULL;
 465
 466         if (req->num_attributes > 0) {
 467                 msg->num_elements = req->num_attributes;
 468                 msg->elements = talloc_array(msg, struct ldb_message_element, msg->num_elements);
 469                 NT_STATUS_HAVE_NO_MEMORY(msg->elements);
 470
 471                 for (i=0; i < msg->num_elements; i++) {
 472                         msg->elements[i].name = discard_const_p(char, req->attributes[i].name);
 473                         msg->elements[i].flags = 0;
 474                         msg->elements[i].num_values = 0;
 475                         msg->elements[i].values = NULL;
 476
 477                         if (req->attributes[i].num_values > 0) {
 478                                 msg->elements[i].num_values = req->attributes[i].num_values;
 479                                 msg->elements[i].values = talloc_array(msg->elements, struct ldb_val,
 480                                                                        msg->elements[i].num_values);
 481                                 NT_STATUS_HAVE_NO_MEMORY(msg->elements[i].values);
 482
 483                                 for (j=0; j < msg->elements[i].num_values; j++) {
 484                                         if (!(req->attributes[i].values[j].length > 0)) {
 485                                                 result = LDAP_OTHER;
 486                                                 errstr = "Empty attribute values are not allowed";
 487                                                 goto reply;
 488                                         }
 489                                         msg->elements[i].values[j].length = req->attributes[i].values[j].length;
 490                                         msg->elements[i].values[j].data = req->attributes[i].values[j].data;
 491                                 }
 492                         } else {
 493                                 result = LDAP_OTHER;
 494                                 errstr = "No attribute values are not allowed";
 495                                 goto reply;
 496                         }
 497                 }
 498         } else {
 499                 result = LDAP_OTHER;
 500                 errstr = "No attributes are not allowed";
 501                 goto reply;
 502         }
 503
 504 reply:
 505         add_reply = ldapsrv_init_reply(call, LDAP_TAG_AddResponse);
 506         NT_STATUS_HAVE_NO_MEMORY(add_reply);
 507
 508         if (result == LDAP_SUCCESS) {
 509                 ldb_ret = ldb_add(samdb, msg);
 510                 result = map_ldb_error(samdb, ldb_ret, &errstr);
 511         }
 512
 513         add_result = &add_reply->msg->r.AddResponse;
 514         add_result->dn = NULL;
 515         add_result->resultcode = result;
 516         add_result->errormessage = (errstr?talloc_strdup(add_reply,errstr):NULL);
 517         add_result->referral = NULL;
 518
 519         talloc_free(local_ctx);
 520
 521         ldapsrv_queue_reply(call, add_reply);
 522         return NT_STATUS_OK;
 523
 524 }
 525
 526 static NTSTATUS ldapsrv_DelRequest(struct ldapsrv_call *call)
 527 {
 528         struct ldap_DelRequest *req = &call->request->r.DelRequest;
 529         struct ldap_Result *del_result;
 530         struct ldapsrv_reply *del_reply;
 531         void *local_ctx;
 532         struct ldb_context *samdb = call->conn->ldb;
 533         struct ldb_dn *dn;
 534         const char *errstr = NULL;
 535         int result = LDAP_SUCCESS;
 536         int ldb_ret;
 537
 538         DEBUG(10, ("DelRequest"));
 539         DEBUGADD(10, (" dn: %s", req->dn));
 540
 541         local_ctx = talloc_named(call, 0, "DelRequest local memory context");
 542         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 543
 544         dn = ldb_dn_new(local_ctx, samdb, req->dn);
 545         VALID_DN_SYNTAX(dn,1);
 546
 547         DEBUG(10, ("DelRequest: dn: [%s]\n", req->dn));
 548
 549 reply:
 550         del_reply = ldapsrv_init_reply(call, LDAP_TAG_DelResponse);
 551         NT_STATUS_HAVE_NO_MEMORY(del_reply);
 552
 553         if (result == LDAP_SUCCESS) {
 554                 ldb_ret = ldb_delete(samdb, dn);
 555                 result = map_ldb_error(samdb, ldb_ret, &errstr);
 556         }
 557
 558         del_result = &del_reply->msg->r.DelResponse;
 559         del_result->dn = NULL;
 560         del_result->resultcode = result;
 561         del_result->errormessage = (errstr?talloc_strdup(del_reply,errstr):NULL);
 562         del_result->referral = NULL;
 563
 564         talloc_free(local_ctx);
 565
 566         ldapsrv_queue_reply(call, del_reply);
 567         return NT_STATUS_OK;
 568 }
 569
 570 static NTSTATUS ldapsrv_ModifyDNRequest(struct ldapsrv_call *call)
 571 {
 572         struct ldap_ModifyDNRequest *req = &call->request->r.ModifyDNRequest;
 573         struct ldap_Result *modifydn;
 574         struct ldapsrv_reply *modifydn_r;
 575         void *local_ctx;
 576         struct ldb_context *samdb = call->conn->ldb;
 577         struct ldb_dn *olddn, *newdn=NULL, *newrdn;
 578         struct ldb_dn *parentdn = NULL;
 579         const char *errstr = NULL;
 580         int result = LDAP_SUCCESS;
 581         int ldb_ret;
 582
 583         DEBUG(10, ("ModifyDNRequrest"));
 584         DEBUGADD(10, (" dn: %s", req->dn));
 585         DEBUGADD(10, (" newrdn: %s", req->newrdn));
 586
 587         local_ctx = talloc_named(call, 0, "ModifyDNRequest local memory context");
 588         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 589
 590         olddn = ldb_dn_new(local_ctx, samdb, req->dn);
 591         VALID_DN_SYNTAX(olddn, 2);
 592
 593         newrdn = ldb_dn_new(local_ctx, samdb, req->newrdn);
 594         VALID_DN_SYNTAX(newrdn, 1);
 595
 596         DEBUG(10, ("ModifyDNRequest: olddn: [%s]\n", req->dn));
 597         DEBUG(10, ("ModifyDNRequest: newrdn: [%s]\n", req->newrdn));
 598
 599         /* we can't handle the rename if we should not remove the old dn */
 600         if (!req->deleteolddn) {
 601                 result = LDAP_UNWILLING_TO_PERFORM;
 602                 errstr = "Old RDN must be deleted";
 603                 goto reply;
 604         }
 605
 606         if (req->newsuperior) {
 607                 parentdn = ldb_dn_new(local_ctx, samdb, req->newsuperior);
 608                 VALID_DN_SYNTAX(parentdn, 0);
 609                 DEBUG(10, ("ModifyDNRequest: newsuperior: [%s]\n", req->newsuperior));
 610
 611                 if (ldb_dn_get_comp_num(parentdn) < 1) {
 612                         result = LDAP_AFFECTS_MULTIPLE_DSAS;
 613                         errstr = "Error new Superior DN invalid";
 614                         goto reply;
 615                 }
 616         }
 617
 618         if (!parentdn) {
 619                 parentdn = ldb_dn_get_parent(local_ctx, olddn);
 620                 NT_STATUS_HAVE_NO_MEMORY(parentdn);
 621         }
 622
 623         if ( ! ldb_dn_add_child_fmt(parentdn,
 624                                 "%s=%s",
 625                                 ldb_dn_get_rdn_name(newrdn),
 626                                 (char *)ldb_dn_get_rdn_val(newrdn)->data)) {
 627                 result = LDAP_OTHER;
 628                 goto reply;
 629         }
 630         newdn = parentdn;
 631
 632 reply:
 633         modifydn_r = ldapsrv_init_reply(call, LDAP_TAG_ModifyDNResponse);
 634         NT_STATUS_HAVE_NO_MEMORY(modifydn_r);
 635
 636         if (result == LDAP_SUCCESS) {
 637                 ldb_ret = ldb_rename(samdb, olddn, newdn);
 638                 result = map_ldb_error(samdb, ldb_ret, &errstr);
 639         }
 640
 641         modifydn = &modifydn_r->msg->r.ModifyDNResponse;
 642         modifydn->dn = NULL;
 643         modifydn->resultcode = result;
 644         modifydn->errormessage = (errstr?talloc_strdup(modifydn_r,errstr):NULL);
 645         modifydn->referral = NULL;
 646
 647         talloc_free(local_ctx);
 648
 649         ldapsrv_queue_reply(call, modifydn_r);
 650         return NT_STATUS_OK;
 651 }
 652
 653 static NTSTATUS ldapsrv_CompareRequest(struct ldapsrv_call *call)
 654 {
 655         struct ldap_CompareRequest *req = &call->request->r.CompareRequest;
 656         struct ldap_Result *compare;
 657         struct ldapsrv_reply *compare_r;
 658         void *local_ctx;
 659         struct ldb_context *samdb = call->conn->ldb;
 660         struct ldb_result *res = NULL;
 661         struct ldb_dn *dn;
 662         const char *attrs[1];
 663         const char *errstr = NULL;
 664         const char *filter = NULL;
 665         int result = LDAP_SUCCESS;
 666         int ldb_ret;
 667
 668         DEBUG(10, ("CompareRequest"));
 669         DEBUGADD(10, (" dn: %s", req->dn));
 670
 671         local_ctx = talloc_named(call, 0, "CompareRequest 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, 1);
 676
 677         DEBUG(10, ("CompareRequest: dn: [%s]\n", req->dn));
 678         filter = talloc_asprintf(local_ctx, "(%s=%*s)", req->attribute,
 679                                  (int)req->value.length, req->value.data);
 680         NT_STATUS_HAVE_NO_MEMORY(filter);
 681
 682         DEBUGADD(10, ("CompareRequest: attribute: [%s]\n", filter));
 683
 684         attrs[0] = NULL;
 685
 686 reply:
 687         compare_r = ldapsrv_init_reply(call, LDAP_TAG_CompareResponse);
 688         NT_STATUS_HAVE_NO_MEMORY(compare_r);
 689
 690         if (result == LDAP_SUCCESS) {
 691                 ldb_ret = ldb_search(samdb, local_ctx, &res,
 692                                      dn, LDB_SCOPE_BASE, attrs, "%s", filter);
 693                 if (ldb_ret != LDB_SUCCESS) {
 694                         result = map_ldb_error(samdb, ldb_ret, &errstr);
 695                         DEBUG(10,("CompareRequest: error: %s\n", errstr));
 696                 } else if (res->count == 0) {
 697                         DEBUG(10,("CompareRequest: doesn't matched\n"));
 698                         result = LDAP_COMPARE_FALSE;
 699                         errstr = NULL;
 700                 } else if (res->count == 1) {
 701                         DEBUG(10,("CompareRequest: matched\n"));
 702                         result = LDAP_COMPARE_TRUE;
 703                         errstr = NULL;
 704                 } else if (res->count > 1) {
 705                         result = LDAP_OTHER;
 706                         errstr = "too many objects match";
 707                         DEBUG(10,("CompareRequest: %d results: %s\n", res->count, errstr));
 708                 }
 709         }
 710
 711         compare = &compare_r->msg->r.CompareResponse;
 712         compare->dn = NULL;
 713         compare->resultcode = result;
 714         compare->errormessage = (errstr?talloc_strdup(compare_r,errstr):NULL);
 715         compare->referral = NULL;
 716
 717         talloc_free(local_ctx);
 718
 719         ldapsrv_queue_reply(call, compare_r);
 720         return NT_STATUS_OK;
 721 }
 722
 723 static NTSTATUS ldapsrv_AbandonRequest(struct ldapsrv_call *call)
 724 {
 725 /*      struct ldap_AbandonRequest *req = &call->request.r.AbandonRequest;*/
 726         DEBUG(10, ("AbandonRequest\n"));
 727         return NT_STATUS_OK;
 728 }
 729
 730 NTSTATUS ldapsrv_do_call(struct ldapsrv_call *call)
 731 {
 732         int i;
 733         struct ldap_message *msg = call->request;
 734         /* Check for undecoded critical extensions */
 735         for (i=0; msg->controls && msg->controls[i]; i++) {
 736                 if (!msg->controls_decoded[i] &&
 737                     msg->controls[i]->critical) {
 738                         DEBUG(3, ("ldapsrv_do_call: Critical extension %s is not known to this server\n",
 739                                   msg->controls[i]->oid));
 740                         return ldapsrv_unwilling(call, LDAP_UNAVAILABLE_CRITICAL_EXTENSION);
 741                 }
 742         }
 743
 744         switch(call->request->type) {
 745         case LDAP_TAG_BindRequest:
 746                 return ldapsrv_BindRequest(call);
 747         case LDAP_TAG_UnbindRequest:
 748                 return ldapsrv_UnbindRequest(call);
 749         case LDAP_TAG_SearchRequest:
 750                 return ldapsrv_SearchRequest(call);
 751         case LDAP_TAG_ModifyRequest:
 752                 return ldapsrv_ModifyRequest(call);
 753         case LDAP_TAG_AddRequest:
 754                 return ldapsrv_AddRequest(call);
 755         case LDAP_TAG_DelRequest:
 756                 return ldapsrv_DelRequest(call);
 757         case LDAP_TAG_ModifyDNRequest:
 758                 return ldapsrv_ModifyDNRequest(call);
 759         case LDAP_TAG_CompareRequest:
 760                 return ldapsrv_CompareRequest(call);
 761         case LDAP_TAG_AbandonRequest:
 762                 return ldapsrv_AbandonRequest(call);
 763         case LDAP_TAG_ExtendedRequest:
 764                 return ldapsrv_ExtendedRequest(call);
 765         default:
 766                 return ldapsrv_unwilling(call, 2);
 767         }
 768 }