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 2 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, write to the Free Software
  18    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  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 "lib/ldb/include/ldb.h"
  26 #include "lib/ldb/include/ldb_errors.h"
  27 #include "lib/db_wrap.h"
  28 #include "auth/credentials/credentials.h"
  29 #include "auth/gensec/gensec.h"
  30
  31 #define VALID_DN_SYNTAX(dn,i) do {\
  32         if (!(dn)) {\
  33                 return NT_STATUS_NO_MEMORY;\
  34         } else if (ldb_dn_get_comp_num(dn) < (i)) {\
  35                 result = LDAP_INVALID_DN_SYNTAX;\
  36                 errstr = "Invalid DN (" #i " components needed for '" #dn "')";\
  37                 goto reply;\
  38         }\
  39 } while(0)
  40
  41 static int map_ldb_error(struct ldb_context *ldb, int err, const char **errstring)
  42 {
  43         *errstring = ldb_errstring(ldb);
  44
  45         /* its 1:1 for now */
  46         return err;
  47 }
  48
  49 /*
  50   connect to the sam database
  51 */
  52 NTSTATUS ldapsrv_backend_Init(struct ldapsrv_connection *conn)
  53 {
  54         conn->ldb = ldb_wrap_connect(conn, lp_sam_url(), conn->session_info,
  55                                      NULL, conn->global_catalog ? LDB_FLG_RDONLY : 0, NULL);
  56         if (conn->ldb == NULL) {
  57                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
  58         }
  59
  60         if (conn->server_credentials) {
  61                 char **sasl_mechs = NULL;
  62                 struct gensec_security_ops **backends = gensec_security_all();
  63                 enum credentials_use_kerberos use_kerberos
  64                         = cli_credentials_get_kerberos_state(conn->server_credentials);
  65                 struct gensec_security_ops **ops
  66                         = gensec_use_kerberos_mechs(conn, backends, use_kerberos);
  67                 int i, j = 0;
  68                 for (i = 0; ops && ops[i]; i++) {
  69                         if (ops[i]->sasl_name && ops[i]->server_start) {
  70                                 char *sasl_name = talloc_strdup(conn, ops[i]->sasl_name);
  71
  72                                 if (!sasl_name) {
  73                                         return NT_STATUS_NO_MEMORY;
  74                                 }
  75                                 sasl_mechs = talloc_realloc(conn, sasl_mechs, char *, j + 2);
  76                                 if (!sasl_mechs) {
  77                                         return NT_STATUS_NO_MEMORY;
  78                                 }
  79                                 sasl_mechs[j] = sasl_name;
  80                                 talloc_steal(sasl_mechs, sasl_name);
  81                                 sasl_mechs[j+1] = NULL;
  82                                 j++;
  83                         }
  84                 }
  85                 talloc_free(ops);
  86                 ldb_set_opaque(conn->ldb, "supportedSASLMechanims", sasl_mechs);
  87         }
  88
  89         if (conn->global_catalog) {
  90                 ldb_set_opaque(conn->ldb, "global_catalog", (void *)(-1));
  91         }
  92
  93         return NT_STATUS_OK;
  94 }
  95
  96 struct ldapsrv_reply *ldapsrv_init_reply(struct ldapsrv_call *call, uint8_t type)
  97 {
  98         struct ldapsrv_reply *reply;
  99
 100         reply = talloc(call, struct ldapsrv_reply);
 101         if (!reply) {
 102                 return NULL;
 103         }
 104         reply->msg = talloc(reply, struct ldap_message);
 105         if (reply->msg == NULL) {
 106                 talloc_free(reply);
 107                 return NULL;
 108         }
 109
 110         reply->msg->messageid = call->request->messageid;
 111         reply->msg->type = type;
 112         reply->msg->controls = NULL;
 113
 114         return reply;
 115 }
 116
 117 void ldapsrv_queue_reply(struct ldapsrv_call *call, struct ldapsrv_reply *reply)
 118 {
 119         DLIST_ADD_END(call->replies, reply, struct ldapsrv_reply *);
 120 }
 121
 122 NTSTATUS ldapsrv_unwilling(struct ldapsrv_call *call, int error)
 123 {
 124         struct ldapsrv_reply *reply;
 125         struct ldap_ExtendedResponse *r;
 126
 127         DEBUG(10,("Unwilling type[%d] id[%d]\n", call->request->type, call->request->messageid));
 128
 129         reply = ldapsrv_init_reply(call, LDAP_TAG_ExtendedResponse);
 130         if (!reply) {
 131                 return NT_STATUS_NO_MEMORY;
 132         }
 133
 134         r = &reply->msg->r.ExtendedResponse;
 135         r->response.resultcode = error;
 136         r->response.dn = NULL;
 137         r->response.errormessage = NULL;
 138         r->response.referral = NULL;
 139         r->oid = NULL;
 140         r->value = NULL;
 141
 142         ldapsrv_queue_reply(call, reply);
 143         return NT_STATUS_OK;
 144 }
 145
 146 static NTSTATUS ldapsrv_SearchRequest(struct ldapsrv_call *call)
 147 {
 148         struct ldap_SearchRequest *req = &call->request->r.SearchRequest;
 149         struct ldap_SearchResEntry *ent;
 150         struct ldap_Result *done;
 151         struct ldapsrv_reply *ent_r, *done_r;
 152         void *local_ctx;
 153         struct ldb_context *samdb = talloc_get_type(call->conn->ldb, struct ldb_context);
 154         struct ldb_dn *basedn;
 155         struct ldb_result *res = NULL;
 156         struct ldb_request *lreq;
 157         enum ldb_scope scope = LDB_SCOPE_DEFAULT;
 158         const char **attrs = NULL;
 159         const char *errstr = NULL;
 160         int success_limit = 1;
 161         int result = -1;
 162         int ldb_ret = -1;
 163         int i, j;
 164
 165         DEBUG(10, ("SearchRequest"));
 166         DEBUGADD(10, (" basedn: %s", req->basedn));
 167         DEBUGADD(10, (" filter: %s\n", ldb_filter_from_tree(call, req->tree)));
 168
 169         local_ctx = talloc_new(call);
 170         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 171
 172         basedn = ldb_dn_explode(local_ctx, req->basedn);
 173         VALID_DN_SYNTAX(basedn, 0);
 174
 175         DEBUG(10, ("SearchRequest: basedn: [%s]\n", req->basedn));
 176         DEBUG(10, ("SearchRequest: filter: [%s]\n", ldb_filter_from_tree(call, req->tree)));
 177
 178         switch (req->scope) {
 179                 case LDAP_SEARCH_SCOPE_BASE:
 180                         DEBUG(10,("SearchRequest: scope: [BASE]\n"));
 181                         scope = LDB_SCOPE_BASE;
 182                         success_limit = 0;
 183                         break;
 184                 case LDAP_SEARCH_SCOPE_SINGLE:
 185                         DEBUG(10,("SearchRequest: scope: [ONE]\n"));
 186                         scope = LDB_SCOPE_ONELEVEL;
 187                         success_limit = 0;
 188                         break;
 189                 case LDAP_SEARCH_SCOPE_SUB:
 190                         DEBUG(10,("SearchRequest: scope: [SUB]\n"));
 191                         scope = LDB_SCOPE_SUBTREE;
 192                         success_limit = 0;
 193                         break;
 194                 default:
 195                         result = LDAP_PROTOCOL_ERROR;
 196                         errstr = "Invalid scope";
 197                         break;
 198         }
 199
 200         if (req->num_attributes >= 1) {
 201                 attrs = talloc_array(samdb, const char *, req->num_attributes+1);
 202                 NT_STATUS_HAVE_NO_MEMORY(attrs);
 203
 204                 for (i=0; i < req->num_attributes; i++) {
 205                         DEBUG(10,("SearchRequest: attrs: [%s]\n",req->attributes[i]));
 206                         attrs[i] = req->attributes[i];
 207                 }
 208                 attrs[i] = NULL;
 209         }
 210
 211         DEBUG(5,("ldb_request dn=%s filter=%s\n",
 212                  req->basedn, ldb_filter_from_tree(call, req->tree)));
 213
 214         lreq = talloc(local_ctx, struct ldb_request);
 215         NT_STATUS_HAVE_NO_MEMORY(lreq);
 216
 217         res = talloc_zero(local_ctx, struct ldb_result);
 218         NT_STATUS_HAVE_NO_MEMORY(res);
 219
 220         lreq->operation = LDB_SEARCH;
 221         lreq->op.search.base = basedn;
 222         lreq->op.search.scope = scope;
 223         lreq->op.search.tree = req->tree;
 224         lreq->op.search.attrs = attrs;
 225
 226         lreq->controls = call->request->controls;
 227
 228         lreq->context = res;
 229         lreq->callback = ldb_search_default_callback;
 230
 231         /* Copy the timeout from the incoming call */
 232         ldb_set_timeout(samdb, lreq, req->timelimit);
 233
 234         ldb_ret = ldb_request(samdb, lreq);
 235
 236         if (ldb_ret != LDB_SUCCESS) {
 237                 goto reply;
 238         }
 239
 240         ldb_ret = ldb_wait(lreq->handle, LDB_WAIT_ALL);
 241
 242         if (ldb_ret == LDB_SUCCESS) {
 243                 for (i = 0; i < res->count; i++) {
 244                         ent_r = ldapsrv_init_reply(call, LDAP_TAG_SearchResultEntry);
 245                         NT_STATUS_HAVE_NO_MEMORY(ent_r);
 246
 247                         ent = &ent_r->msg->r.SearchResultEntry;
 248                         ent->dn = ldb_dn_linearize(ent_r, res->msgs[i]->dn);
 249                         ent->num_attributes = 0;
 250                         ent->attributes = NULL;
 251                         if (res->msgs[i]->num_elements == 0) {
 252                                 goto queue_reply;
 253                         }
 254                         ent->num_attributes = res->msgs[i]->num_elements;
 255                         ent->attributes = talloc_array(ent_r, struct ldb_message_element, ent->num_attributes);
 256                         NT_STATUS_HAVE_NO_MEMORY(ent->attributes);
 257                         for (j=0; j < ent->num_attributes; j++) {
 258                                 ent->attributes[j].name = talloc_steal(ent->attributes, res->msgs[i]->elements[j].name);
 259                                 ent->attributes[j].num_values = 0;
 260                                 ent->attributes[j].values = NULL;
 261                                 if (req->attributesonly && (res->msgs[i]->elements[j].num_values == 0)) {
 262                                         continue;
 263                                 }
 264                                 ent->attributes[j].num_values = res->msgs[i]->elements[j].num_values;
 265                                 ent->attributes[j].values = res->msgs[i]->elements[j].values;
 266                                 talloc_steal(ent->attributes, res->msgs[i]->elements[j].values);
 267                         }
 268 queue_reply:
 269                         ldapsrv_queue_reply(call, ent_r);
 270                 }
 271         }
 272
 273 reply:
 274         done_r = ldapsrv_init_reply(call, LDAP_TAG_SearchResultDone);
 275         NT_STATUS_HAVE_NO_MEMORY(done_r);
 276
 277         done = &done_r->msg->r.SearchResultDone;
 278         done->dn = NULL;
 279         done->referral = NULL;
 280
 281         if (result != -1) {
 282         } else if (ldb_ret == LDB_SUCCESS) {
 283                 if (res->count >= success_limit) {
 284                         DEBUG(10,("SearchRequest: results: [%d]\n", res->count));
 285                         result = LDAP_SUCCESS;
 286                         errstr = NULL;
 287                 } else if (res->count == 0) {
 288                         DEBUG(10,("SearchRequest: no results\n"));
 289                         result = LDAP_NO_SUCH_OBJECT;
 290                         errstr = ldb_errstring(samdb);
 291                 }
 292                 if (res->controls) {
 293                         done_r->msg->controls = res->controls;
 294                         talloc_steal(done_r, res->controls);
 295                 }
 296         } else {
 297                 DEBUG(10,("SearchRequest: error\n"));
 298                 result = map_ldb_error(samdb, ldb_ret, &errstr);
 299         }
 300
 301         done->resultcode = result;
 302         done->errormessage = (errstr?talloc_strdup(done_r, errstr):NULL);
 303
 304         talloc_free(local_ctx);
 305
 306         ldapsrv_queue_reply(call, done_r);
 307         return NT_STATUS_OK;
 308 }
 309
 310 static NTSTATUS ldapsrv_ModifyRequest(struct ldapsrv_call *call)
 311 {
 312         struct ldap_ModifyRequest *req = &call->request->r.ModifyRequest;
 313         struct ldap_Result *modify_result;
 314         struct ldapsrv_reply *modify_reply;
 315         void *local_ctx;
 316         struct ldb_context *samdb = call->conn->ldb;
 317         struct ldb_message *msg = NULL;
 318         struct ldb_dn *dn;
 319         const char *errstr = NULL;
 320         int result = LDAP_SUCCESS;
 321         int ldb_ret;
 322         int i,j;
 323
 324         DEBUG(10, ("ModifyRequest"));
 325         DEBUGADD(10, (" dn: %s", req->dn));
 326
 327         local_ctx = talloc_named(call, 0, "ModifyRequest local memory context");
 328         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 329
 330         dn = ldb_dn_explode(local_ctx, req->dn);
 331         VALID_DN_SYNTAX(dn, 1);
 332
 333         DEBUG(10, ("ModifyRequest: dn: [%s]\n", req->dn));
 334
 335         msg = talloc(local_ctx, struct ldb_message);
 336         NT_STATUS_HAVE_NO_MEMORY(msg);
 337
 338         msg->dn = dn;
 339         msg->private_data = NULL;
 340         msg->num_elements = 0;
 341         msg->elements = NULL;
 342
 343         if (req->num_mods > 0) {
 344                 msg->num_elements = req->num_mods;
 345                 msg->elements = talloc_array(msg, struct ldb_message_element, req->num_mods);
 346                 NT_STATUS_HAVE_NO_MEMORY(msg->elements);
 347
 348                 for (i=0; i < msg->num_elements; i++) {
 349                         msg->elements[i].name = discard_const_p(char, req->mods[i].attrib.name);
 350                         msg->elements[i].num_values = 0;
 351                         msg->elements[i].values = NULL;
 352
 353                         switch (req->mods[i].type) {
 354                         default:
 355                                 result = LDAP_PROTOCOL_ERROR;
 356                                 errstr = "Invalid LDAP_MODIFY_* type";
 357                                 goto reply;
 358                         case LDAP_MODIFY_ADD:
 359                                 msg->elements[i].flags = LDB_FLAG_MOD_ADD;
 360                                 break;
 361                         case LDAP_MODIFY_DELETE:
 362                                 msg->elements[i].flags = LDB_FLAG_MOD_DELETE;
 363                                 break;
 364                         case LDAP_MODIFY_REPLACE:
 365                                 msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
 366                                 break;
 367                         }
 368
 369                         msg->elements[i].num_values = req->mods[i].attrib.num_values;
 370                         if (msg->elements[i].num_values > 0) {
 371                                 msg->elements[i].values = talloc_array(msg, struct ldb_val, msg->elements[i].num_values);
 372                                 NT_STATUS_HAVE_NO_MEMORY(msg->elements[i].values);
 373
 374                                 for (j=0; j < msg->elements[i].num_values; j++) {
 375                                         if (!(req->mods[i].attrib.values[j].length > 0)) {
 376                                                 result = LDAP_OTHER;
 377                                                 errstr = "Empty attribute values are not allowed";
 378                                                 goto reply;
 379                                         }
 380                                         msg->elements[i].values[j].length = req->mods[i].attrib.values[j].length;
 381                                         msg->elements[i].values[j].data = req->mods[i].attrib.values[j].data;
 382                                 }
 383                         }
 384                 }
 385         } else {
 386                 result = LDAP_OTHER;
 387                 errstr = "No mods are not allowed";
 388                 goto reply;
 389         }
 390
 391 reply:
 392         modify_reply = ldapsrv_init_reply(call, LDAP_TAG_ModifyResponse);
 393         NT_STATUS_HAVE_NO_MEMORY(modify_reply);
 394
 395         if (result == LDAP_SUCCESS) {
 396                 ldb_ret = ldb_modify(samdb, msg);
 397                 result = map_ldb_error(samdb, ldb_ret, &errstr);
 398         }
 399
 400         modify_result = &modify_reply->msg->r.AddResponse;
 401         modify_result->dn = NULL;
 402         modify_result->resultcode = result;
 403         modify_result->errormessage = (errstr?talloc_strdup(modify_reply, errstr):NULL);
 404         modify_result->referral = NULL;
 405
 406         talloc_free(local_ctx);
 407
 408         ldapsrv_queue_reply(call, modify_reply);
 409         return NT_STATUS_OK;
 410
 411 }
 412
 413 static NTSTATUS ldapsrv_AddRequest(struct ldapsrv_call *call)
 414 {
 415         struct ldap_AddRequest *req = &call->request->r.AddRequest;
 416         struct ldap_Result *add_result;
 417         struct ldapsrv_reply *add_reply;
 418         void *local_ctx;
 419         struct ldb_context *samdb = call->conn->ldb;
 420         struct ldb_message *msg = NULL;
 421         struct ldb_dn *dn;
 422         const char *errstr = NULL;
 423         int result = LDAP_SUCCESS;
 424         int ldb_ret;
 425         int i,j;
 426
 427         DEBUG(10, ("AddRequest"));
 428         DEBUGADD(10, (" dn: %s", req->dn));
 429
 430         local_ctx = talloc_named(call, 0, "AddRequest local memory context");
 431         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 432
 433         dn = ldb_dn_explode(local_ctx, req->dn);
 434         VALID_DN_SYNTAX(dn,1);
 435
 436         DEBUG(10, ("AddRequest: dn: [%s]\n", req->dn));
 437
 438         msg = talloc(local_ctx, struct ldb_message);
 439         NT_STATUS_HAVE_NO_MEMORY(msg);
 440
 441         msg->dn = dn;
 442         msg->private_data = NULL;
 443         msg->num_elements = 0;
 444         msg->elements = NULL;
 445
 446         if (req->num_attributes > 0) {
 447                 msg->num_elements = req->num_attributes;
 448                 msg->elements = talloc_array(msg, struct ldb_message_element, msg->num_elements);
 449                 NT_STATUS_HAVE_NO_MEMORY(msg->elements);
 450
 451                 for (i=0; i < msg->num_elements; i++) {
 452                         msg->elements[i].name = discard_const_p(char, req->attributes[i].name);
 453                         msg->elements[i].flags = 0;
 454                         msg->elements[i].num_values = 0;
 455                         msg->elements[i].values = NULL;
 456
 457                         if (req->attributes[i].num_values > 0) {
 458                                 msg->elements[i].num_values = req->attributes[i].num_values;
 459                                 msg->elements[i].values = talloc_array(msg, struct ldb_val, msg->elements[i].num_values);
 460                                 NT_STATUS_HAVE_NO_MEMORY(msg->elements[i].values);
 461
 462                                 for (j=0; j < msg->elements[i].num_values; j++) {
 463                                         if (!(req->attributes[i].values[j].length > 0)) {
 464                                                 result = LDAP_OTHER;
 465                                                 errstr = "Empty attribute values are not allowed";
 466                                                 goto reply;
 467                                         }
 468                                         msg->elements[i].values[j].length = req->attributes[i].values[j].length;
 469                                         msg->elements[i].values[j].data = req->attributes[i].values[j].data;
 470                                 }
 471                         } else {
 472                                 result = LDAP_OTHER;
 473                                 errstr = "No attribute values are not allowed";
 474                                 goto reply;
 475                         }
 476                 }
 477         } else {
 478                 result = LDAP_OTHER;
 479                 errstr = "No attributes are not allowed";
 480                 goto reply;
 481         }
 482
 483 reply:
 484         add_reply = ldapsrv_init_reply(call, LDAP_TAG_AddResponse);
 485         NT_STATUS_HAVE_NO_MEMORY(add_reply);
 486
 487         if (result == LDAP_SUCCESS) {
 488                 ldb_ret = ldb_add(samdb, msg);
 489                 result = map_ldb_error(samdb, ldb_ret, &errstr);
 490         }
 491
 492         add_result = &add_reply->msg->r.AddResponse;
 493         add_result->dn = NULL;
 494         add_result->resultcode = result;
 495         add_result->errormessage = (errstr?talloc_strdup(add_reply,errstr):NULL);
 496         add_result->referral = NULL;
 497
 498         talloc_free(local_ctx);
 499
 500         ldapsrv_queue_reply(call, add_reply);
 501         return NT_STATUS_OK;
 502
 503 }
 504
 505 static NTSTATUS ldapsrv_DelRequest(struct ldapsrv_call *call)
 506 {
 507         struct ldap_DelRequest *req = &call->request->r.DelRequest;
 508         struct ldap_Result *del_result;
 509         struct ldapsrv_reply *del_reply;
 510         void *local_ctx;
 511         struct ldb_context *samdb = call->conn->ldb;
 512         struct ldb_dn *dn;
 513         const char *errstr = NULL;
 514         int result = LDAP_SUCCESS;
 515         int ldb_ret;
 516
 517         DEBUG(10, ("DelRequest"));
 518         DEBUGADD(10, (" dn: %s", req->dn));
 519
 520         local_ctx = talloc_named(call, 0, "DelRequest local memory context");
 521         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 522
 523         dn = ldb_dn_explode(local_ctx, req->dn);
 524         VALID_DN_SYNTAX(dn,1);
 525
 526         DEBUG(10, ("DelRequest: dn: [%s]\n", req->dn));
 527
 528 reply:
 529         del_reply = ldapsrv_init_reply(call, LDAP_TAG_DelResponse);
 530         NT_STATUS_HAVE_NO_MEMORY(del_reply);
 531
 532         if (result == LDAP_SUCCESS) {
 533                 ldb_ret = ldb_delete(samdb, dn);
 534                 result = map_ldb_error(samdb, ldb_ret, &errstr);
 535         }
 536
 537         del_result = &del_reply->msg->r.DelResponse;
 538         del_result->dn = NULL;
 539         del_result->resultcode = result;
 540         del_result->errormessage = (errstr?talloc_strdup(del_reply,errstr):NULL);
 541         del_result->referral = NULL;
 542
 543         talloc_free(local_ctx);
 544
 545         ldapsrv_queue_reply(call, del_reply);
 546         return NT_STATUS_OK;
 547 }
 548
 549 static NTSTATUS ldapsrv_ModifyDNRequest(struct ldapsrv_call *call)
 550 {
 551         struct ldap_ModifyDNRequest *req = &call->request->r.ModifyDNRequest;
 552         struct ldap_Result *modifydn;
 553         struct ldapsrv_reply *modifydn_r;
 554         void *local_ctx;
 555         struct ldb_context *samdb = call->conn->ldb;
 556         struct ldb_dn *olddn, *newdn=NULL, *newrdn;
 557         struct ldb_dn *parentdn = NULL;
 558         const char *errstr = NULL;
 559         int result = LDAP_SUCCESS;
 560         int ldb_ret;
 561
 562         DEBUG(10, ("ModifyDNRequrest"));
 563         DEBUGADD(10, (" dn: %s", req->dn));
 564         DEBUGADD(10, (" newrdn: %s", req->newrdn));
 565
 566         local_ctx = talloc_named(call, 0, "ModifyDNRequest local memory context");
 567         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 568
 569         olddn = ldb_dn_explode(local_ctx, req->dn);
 570         VALID_DN_SYNTAX(olddn, 2);
 571
 572         newrdn = ldb_dn_explode(local_ctx, req->newrdn);
 573         VALID_DN_SYNTAX(newrdn, 1);
 574
 575         DEBUG(10, ("ModifyDNRequest: olddn: [%s]\n", req->dn));
 576         DEBUG(10, ("ModifyDNRequest: newrdn: [%s]\n", req->newrdn));
 577
 578         /* we can't handle the rename if we should not remove the old dn */
 579         if (!req->deleteolddn) {
 580                 result = LDAP_UNWILLING_TO_PERFORM;
 581                 errstr = "Old RDN must be deleted";
 582                 goto reply;
 583         }
 584
 585         if (ldb_dn_get_comp_num(newrdn) > 1) {
 586                 result = LDAP_NAMING_VIOLATION;
 587                 errstr = "Error new RDN invalid";
 588                 goto reply;
 589         }
 590
 591         if (req->newsuperior) {
 592                 parentdn = ldb_dn_explode(local_ctx, req->newsuperior);
 593                 VALID_DN_SYNTAX(parentdn, 0);
 594                 DEBUG(10, ("ModifyDNRequest: newsuperior: [%s]\n", req->newsuperior));
 595
 596                 if (ldb_dn_get_comp_num(parentdn) < 1) {
 597                         result = LDAP_AFFECTS_MULTIPLE_DSAS;
 598                         errstr = "Error new Superior DN invalid";
 599                         goto reply;
 600                 }
 601         }
 602
 603         if (!parentdn) {
 604                 parentdn = ldb_dn_get_parent(local_ctx, olddn);
 605                 NT_STATUS_HAVE_NO_MEMORY(parentdn);
 606         }
 607
 608         newdn = ldb_dn_build_child(local_ctx,
 609                                    ldb_dn_get_rdn_name(newrdn),
 610                                    (char *)ldb_dn_get_rdn_val(newrdn)->data,
 611                                    parentdn);
 612         NT_STATUS_HAVE_NO_MEMORY(newdn);
 613
 614 reply:
 615         modifydn_r = ldapsrv_init_reply(call, LDAP_TAG_ModifyDNResponse);
 616         NT_STATUS_HAVE_NO_MEMORY(modifydn_r);
 617
 618         if (result == LDAP_SUCCESS) {
 619                 ldb_ret = ldb_rename(samdb, olddn, newdn);
 620                 result = map_ldb_error(samdb, ldb_ret, &errstr);
 621         }
 622
 623         modifydn = &modifydn_r->msg->r.ModifyDNResponse;
 624         modifydn->dn = NULL;
 625         modifydn->resultcode = result;
 626         modifydn->errormessage = (errstr?talloc_strdup(modifydn_r,errstr):NULL);
 627         modifydn->referral = NULL;
 628
 629         talloc_free(local_ctx);
 630
 631         ldapsrv_queue_reply(call, modifydn_r);
 632         return NT_STATUS_OK;
 633 }
 634
 635 static NTSTATUS ldapsrv_CompareRequest(struct ldapsrv_call *call)
 636 {
 637         struct ldap_CompareRequest *req = &call->request->r.CompareRequest;
 638         struct ldap_Result *compare;
 639         struct ldapsrv_reply *compare_r;
 640         void *local_ctx;
 641         struct ldb_context *samdb = call->conn->ldb;
 642         struct ldb_result *res = NULL;
 643         struct ldb_dn *dn;
 644         const char *attrs[1];
 645         const char *errstr = NULL;
 646         const char *filter = NULL;
 647         int result = LDAP_SUCCESS;
 648         int ldb_ret;
 649
 650         DEBUG(10, ("CompareRequest"));
 651         DEBUGADD(10, (" dn: %s", req->dn));
 652
 653         local_ctx = talloc_named(call, 0, "CompareRequest local_memory_context");
 654         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 655
 656         dn = ldb_dn_explode(local_ctx, req->dn);
 657         VALID_DN_SYNTAX(dn, 1);
 658
 659         DEBUG(10, ("CompareRequest: dn: [%s]\n", req->dn));
 660         filter = talloc_asprintf(local_ctx, "(%s=%*s)", req->attribute,
 661                                  (int)req->value.length, req->value.data);
 662         NT_STATUS_HAVE_NO_MEMORY(filter);
 663
 664         DEBUGADD(10, ("CompareRequest: attribute: [%s]\n", filter));
 665
 666         attrs[0] = NULL;
 667
 668 reply:
 669         compare_r = ldapsrv_init_reply(call, LDAP_TAG_CompareResponse);
 670         NT_STATUS_HAVE_NO_MEMORY(compare_r);
 671
 672         if (result == LDAP_SUCCESS) {
 673                 ldb_ret = ldb_search(samdb, dn, LDB_SCOPE_BASE, filter, attrs, &res);
 674                 talloc_steal(samdb, res);
 675                 if (ldb_ret != LDB_SUCCESS) {
 676                         result = map_ldb_error(samdb, ldb_ret, &errstr);
 677                         DEBUG(10,("CompareRequest: error: %s\n", errstr));
 678                 } else if (res->count == 0) {
 679                         DEBUG(10,("CompareRequest: doesn't matched\n"));
 680                         result = LDAP_COMPARE_FALSE;
 681                         errstr = NULL;
 682                 } else if (res->count == 1) {
 683                         DEBUG(10,("CompareRequest: matched\n"));
 684                         result = LDAP_COMPARE_TRUE;
 685                         errstr = NULL;
 686                 } else if (res->count > 1) {
 687                         result = LDAP_OTHER;
 688                         errstr = "too many objects match";
 689                         DEBUG(10,("CompareRequest: %d results: %s\n", res->count, errstr));
 690                 }
 691         }
 692
 693         compare = &compare_r->msg->r.CompareResponse;
 694         compare->dn = NULL;
 695         compare->resultcode = result;
 696         compare->errormessage = (errstr?talloc_strdup(compare_r,errstr):NULL);
 697         compare->referral = NULL;
 698
 699         talloc_free(local_ctx);
 700
 701         ldapsrv_queue_reply(call, compare_r);
 702         return NT_STATUS_OK;
 703 }
 704
 705 static NTSTATUS ldapsrv_AbandonRequest(struct ldapsrv_call *call)
 706 {
 707 /*      struct ldap_AbandonRequest *req = &call->request.r.AbandonRequest;*/
 708         DEBUG(10, ("AbandonRequest\n"));
 709         return NT_STATUS_OK;
 710 }
 711
 712 NTSTATUS ldapsrv_do_call(struct ldapsrv_call *call)
 713 {
 714         switch(call->request->type) {
 715         case LDAP_TAG_BindRequest:
 716                 return ldapsrv_BindRequest(call);
 717         case LDAP_TAG_UnbindRequest:
 718                 return ldapsrv_UnbindRequest(call);
 719         case LDAP_TAG_SearchRequest:
 720                 return ldapsrv_SearchRequest(call);
 721         case LDAP_TAG_ModifyRequest:
 722                 return ldapsrv_ModifyRequest(call);
 723         case LDAP_TAG_AddRequest:
 724                 return ldapsrv_AddRequest(call);
 725         case LDAP_TAG_DelRequest:
 726                 return ldapsrv_DelRequest(call);
 727         case LDAP_TAG_ModifyDNRequest:
 728                 return ldapsrv_ModifyDNRequest(call);
 729         case LDAP_TAG_CompareRequest:
 730                 return ldapsrv_CompareRequest(call);
 731         case LDAP_TAG_AbandonRequest:
 732                 return ldapsrv_AbandonRequest(call);
 733         case LDAP_TAG_ExtendedRequest:
 734                 return ldapsrv_ExtendedRequest(call);
 735         default:
 736                 return ldapsrv_unwilling(call, 2);
 737         }
 738 }