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_validate(dn)) {\
  35                 result = LDAP_INVALID_DN_SYNTAX;\
  36                 errstr = "Invalid DN format";\
  37                 goto reply;\
  38         } else if (ldb_dn_get_comp_num(dn) < (i)) {\
  39                 result = LDAP_INVALID_DN_SYNTAX;\
  40                 errstr = "Invalid DN (" #i " components needed for '" #dn "')";\
  41                 goto reply;\
  42         }\
  43 } while(0)
  44
  45 static int map_ldb_error(struct ldb_context *ldb, int err, const char **errstring)
  46 {
  47         *errstring = ldb_errstring(ldb);
  48
  49         /* its 1:1 for now */
  50         return err;
  51 }
  52
  53 /*
  54   connect to the sam database
  55 */
  56 NTSTATUS ldapsrv_backend_Init(struct ldapsrv_connection *conn)
  57 {
  58         conn->ldb = ldb_wrap_connect(conn, lp_sam_url(), conn->session_info,
  59                                      NULL, conn->global_catalog ? LDB_FLG_RDONLY : 0, NULL);
  60         if (conn->ldb == NULL) {
  61                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
  62         }
  63
  64         if (conn->server_credentials) {
  65                 char **sasl_mechs = NULL;
  66                 struct gensec_security_ops **backends = gensec_security_all();
  67                 enum credentials_use_kerberos use_kerberos
  68                         = cli_credentials_get_kerberos_state(conn->server_credentials);
  69                 struct gensec_security_ops **ops
  70                         = gensec_use_kerberos_mechs(conn, backends, use_kerberos);
  71                 int i, j = 0;
  72                 for (i = 0; ops && ops[i]; i++) {
  73                         if (ops[i]->sasl_name && ops[i]->server_start) {
  74                                 char *sasl_name = talloc_strdup(conn, ops[i]->sasl_name);
  75
  76                                 if (!sasl_name) {
  77                                         return NT_STATUS_NO_MEMORY;
  78                                 }
  79                                 sasl_mechs = talloc_realloc(conn, sasl_mechs, char *, j + 2);
  80                                 if (!sasl_mechs) {
  81                                         return NT_STATUS_NO_MEMORY;
  82                                 }
  83                                 sasl_mechs[j] = sasl_name;
  84                                 talloc_steal(sasl_mechs, sasl_name);
  85                                 sasl_mechs[j+1] = NULL;
  86                                 j++;
  87                         }
  88                 }
  89                 talloc_free(ops);
  90                 ldb_set_opaque(conn->ldb, "supportedSASLMechanims", sasl_mechs);
  91         }
  92
  93         if (conn->global_catalog) {
  94                 ldb_set_opaque(conn->ldb, "global_catalog", (void *)(-1));
  95         }
  96
  97         return NT_STATUS_OK;
  98 }
  99
 100 struct ldapsrv_reply *ldapsrv_init_reply(struct ldapsrv_call *call, uint8_t type)
 101 {
 102         struct ldapsrv_reply *reply;
 103
 104         reply = talloc(call, struct ldapsrv_reply);
 105         if (!reply) {
 106                 return NULL;
 107         }
 108         reply->msg = talloc(reply, struct ldap_message);
 109         if (reply->msg == NULL) {
 110                 talloc_free(reply);
 111                 return NULL;
 112         }
 113
 114         reply->msg->messageid = call->request->messageid;
 115         reply->msg->type = type;
 116         reply->msg->controls = NULL;
 117
 118         return reply;
 119 }
 120
 121 void ldapsrv_queue_reply(struct ldapsrv_call *call, struct ldapsrv_reply *reply)
 122 {
 123         DLIST_ADD_END(call->replies, reply, struct ldapsrv_reply *);
 124 }
 125
 126 NTSTATUS ldapsrv_unwilling(struct ldapsrv_call *call, int error)
 127 {
 128         struct ldapsrv_reply *reply;
 129         struct ldap_ExtendedResponse *r;
 130
 131         DEBUG(10,("Unwilling type[%d] id[%d]\n", call->request->type, call->request->messageid));
 132
 133         reply = ldapsrv_init_reply(call, LDAP_TAG_ExtendedResponse);
 134         if (!reply) {
 135                 return NT_STATUS_NO_MEMORY;
 136         }
 137
 138         r = &reply->msg->r.ExtendedResponse;
 139         r->response.resultcode = error;
 140         r->response.dn = NULL;
 141         r->response.errormessage = NULL;
 142         r->response.referral = NULL;
 143         r->oid = NULL;
 144         r->value = NULL;
 145
 146         ldapsrv_queue_reply(call, reply);
 147         return NT_STATUS_OK;
 148 }
 149
 150 static NTSTATUS ldapsrv_SearchRequest(struct ldapsrv_call *call)
 151 {
 152         struct ldap_SearchRequest *req = &call->request->r.SearchRequest;
 153         struct ldap_SearchResEntry *ent;
 154         struct ldap_Result *done;
 155         struct ldapsrv_reply *ent_r, *done_r;
 156         void *local_ctx;
 157         struct ldb_context *samdb = talloc_get_type(call->conn->ldb, struct ldb_context);
 158         struct ldb_dn *basedn;
 159         struct ldb_result *res = NULL;
 160         struct ldb_request *lreq;
 161         enum ldb_scope scope = LDB_SCOPE_DEFAULT;
 162         const char **attrs = NULL;
 163         const char *errstr = NULL;
 164         int success_limit = 1;
 165         int result = -1;
 166         int ldb_ret = -1;
 167         int i, j;
 168
 169         DEBUG(10, ("SearchRequest"));
 170         DEBUGADD(10, (" basedn: %s", req->basedn));
 171         DEBUGADD(10, (" filter: %s\n", ldb_filter_from_tree(call, req->tree)));
 172
 173         local_ctx = talloc_new(call);
 174         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 175
 176         basedn = ldb_dn_new(local_ctx, samdb, req->basedn);
 177         VALID_DN_SYNTAX(basedn, 0);
 178
 179         DEBUG(10, ("SearchRequest: basedn: [%s]\n", req->basedn));
 180         DEBUG(10, ("SearchRequest: filter: [%s]\n", ldb_filter_from_tree(call, req->tree)));
 181
 182         switch (req->scope) {
 183                 case LDAP_SEARCH_SCOPE_BASE:
 184                         DEBUG(10,("SearchRequest: scope: [BASE]\n"));
 185                         scope = LDB_SCOPE_BASE;
 186                         success_limit = 0;
 187                         break;
 188                 case LDAP_SEARCH_SCOPE_SINGLE:
 189                         DEBUG(10,("SearchRequest: scope: [ONE]\n"));
 190                         scope = LDB_SCOPE_ONELEVEL;
 191                         success_limit = 0;
 192                         break;
 193                 case LDAP_SEARCH_SCOPE_SUB:
 194                         DEBUG(10,("SearchRequest: scope: [SUB]\n"));
 195                         scope = LDB_SCOPE_SUBTREE;
 196                         success_limit = 0;
 197                         break;
 198                 default:
 199                         result = LDAP_PROTOCOL_ERROR;
 200                         errstr = "Invalid scope";
 201                         break;
 202         }
 203
 204         if (req->num_attributes >= 1) {
 205                 attrs = talloc_array(local_ctx, const char *, req->num_attributes+1);
 206                 NT_STATUS_HAVE_NO_MEMORY(attrs);
 207
 208                 for (i=0; i < req->num_attributes; i++) {
 209                         DEBUG(10,("SearchRequest: attrs: [%s]\n",req->attributes[i]));
 210                         attrs[i] = req->attributes[i];
 211                 }
 212                 attrs[i] = NULL;
 213         }
 214
 215         DEBUG(5,("ldb_request dn=%s filter=%s\n",
 216                  req->basedn, ldb_filter_from_tree(call, req->tree)));
 217
 218         lreq = talloc(local_ctx, struct ldb_request);
 219         NT_STATUS_HAVE_NO_MEMORY(lreq);
 220
 221         res = talloc_zero(local_ctx, struct ldb_result);
 222         NT_STATUS_HAVE_NO_MEMORY(res);
 223
 224         lreq->operation = LDB_SEARCH;
 225         lreq->op.search.base = basedn;
 226         lreq->op.search.scope = scope;
 227         lreq->op.search.tree = req->tree;
 228         lreq->op.search.attrs = attrs;
 229
 230         lreq->controls = call->request->controls;
 231
 232         lreq->context = res;
 233         lreq->callback = ldb_search_default_callback;
 234
 235         /* Copy the timeout from the incoming call */
 236         ldb_set_timeout(samdb, lreq, req->timelimit);
 237
 238         ldb_ret = ldb_request(samdb, lreq);
 239
 240         if (ldb_ret != LDB_SUCCESS) {
 241                 goto reply;
 242         }
 243
 244         ldb_ret = ldb_wait(lreq->handle, LDB_WAIT_ALL);
 245
 246         if (ldb_ret == LDB_SUCCESS) {
 247                 for (i = 0; i < res->count; i++) {
 248                         ent_r = ldapsrv_init_reply(call, LDAP_TAG_SearchResultEntry);
 249                         NT_STATUS_HAVE_NO_MEMORY(ent_r);
 250
 251                         ent = &ent_r->msg->r.SearchResultEntry;
 252                         ent->dn = ldb_dn_linearize(ent_r, res->msgs[i]->dn);
 253                         ent->num_attributes = 0;
 254                         ent->attributes = NULL;
 255                         if (res->msgs[i]->num_elements == 0) {
 256                                 goto queue_reply;
 257                         }
 258                         ent->num_attributes = res->msgs[i]->num_elements;
 259                         ent->attributes = talloc_array(ent_r, struct ldb_message_element, ent->num_attributes);
 260                         NT_STATUS_HAVE_NO_MEMORY(ent->attributes);
 261                         for (j=0; j < ent->num_attributes; j++) {
 262                                 ent->attributes[j].name = talloc_steal(ent->attributes, res->msgs[i]->elements[j].name);
 263                                 ent->attributes[j].num_values = 0;
 264                                 ent->attributes[j].values = NULL;
 265                                 if (req->attributesonly && (res->msgs[i]->elements[j].num_values == 0)) {
 266                                         continue;
 267                                 }
 268                                 ent->attributes[j].num_values = res->msgs[i]->elements[j].num_values;
 269                                 ent->attributes[j].values = res->msgs[i]->elements[j].values;
 270                                 talloc_steal(ent->attributes, res->msgs[i]->elements[j].values);
 271                         }
 272 queue_reply:
 273                         ldapsrv_queue_reply(call, ent_r);
 274                 }
 275         }
 276
 277 reply:
 278         done_r = ldapsrv_init_reply(call, LDAP_TAG_SearchResultDone);
 279         NT_STATUS_HAVE_NO_MEMORY(done_r);
 280
 281         done = &done_r->msg->r.SearchResultDone;
 282         done->dn = NULL;
 283         done->referral = NULL;
 284
 285         if (result != -1) {
 286         } else if (ldb_ret == LDB_SUCCESS) {
 287                 if (res->count >= success_limit) {
 288                         DEBUG(10,("SearchRequest: results: [%d]\n", res->count));
 289                         result = LDAP_SUCCESS;
 290                         errstr = NULL;
 291                 } else if (res->count == 0) {
 292                         DEBUG(10,("SearchRequest: no results\n"));
 293                         result = LDAP_NO_SUCH_OBJECT;
 294                         errstr = ldb_errstring(samdb);
 295                 }
 296                 if (res->controls) {
 297                         done_r->msg->controls = res->controls;
 298                         talloc_steal(done_r, res->controls);
 299                 }
 300         } else {
 301                 DEBUG(10,("SearchRequest: error\n"));
 302                 result = map_ldb_error(samdb, ldb_ret, &errstr);
 303         }
 304
 305         done->resultcode = result;
 306         done->errormessage = (errstr?talloc_strdup(done_r, errstr):NULL);
 307
 308         talloc_free(local_ctx);
 309
 310         ldapsrv_queue_reply(call, done_r);
 311         return NT_STATUS_OK;
 312 }
 313
 314 static NTSTATUS ldapsrv_ModifyRequest(struct ldapsrv_call *call)
 315 {
 316         struct ldap_ModifyRequest *req = &call->request->r.ModifyRequest;
 317         struct ldap_Result *modify_result;
 318         struct ldapsrv_reply *modify_reply;
 319         void *local_ctx;
 320         struct ldb_context *samdb = call->conn->ldb;
 321         struct ldb_message *msg = NULL;
 322         struct ldb_dn *dn;
 323         const char *errstr = NULL;
 324         int result = LDAP_SUCCESS;
 325         int ldb_ret;
 326         int i,j;
 327
 328         DEBUG(10, ("ModifyRequest"));
 329         DEBUGADD(10, (" dn: %s", req->dn));
 330
 331         local_ctx = talloc_named(call, 0, "ModifyRequest local memory context");
 332         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 333
 334         dn = ldb_dn_new(local_ctx, samdb, req->dn);
 335         VALID_DN_SYNTAX(dn, 1);
 336
 337         DEBUG(10, ("ModifyRequest: dn: [%s]\n", req->dn));
 338
 339         msg = talloc(local_ctx, struct ldb_message);
 340         NT_STATUS_HAVE_NO_MEMORY(msg);
 341
 342         msg->dn = dn;
 343         msg->private_data = NULL;
 344         msg->num_elements = 0;
 345         msg->elements = NULL;
 346
 347         if (req->num_mods > 0) {
 348                 msg->num_elements = req->num_mods;
 349                 msg->elements = talloc_array(msg, struct ldb_message_element, req->num_mods);
 350                 NT_STATUS_HAVE_NO_MEMORY(msg->elements);
 351
 352                 for (i=0; i < msg->num_elements; i++) {
 353                         msg->elements[i].name = discard_const_p(char, req->mods[i].attrib.name);
 354                         msg->elements[i].num_values = 0;
 355                         msg->elements[i].values = NULL;
 356
 357                         switch (req->mods[i].type) {
 358                         default:
 359                                 result = LDAP_PROTOCOL_ERROR;
 360                                 errstr = "Invalid LDAP_MODIFY_* type";
 361                                 goto reply;
 362                         case LDAP_MODIFY_ADD:
 363                                 msg->elements[i].flags = LDB_FLAG_MOD_ADD;
 364                                 break;
 365                         case LDAP_MODIFY_DELETE:
 366                                 msg->elements[i].flags = LDB_FLAG_MOD_DELETE;
 367                                 break;
 368                         case LDAP_MODIFY_REPLACE:
 369                                 msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
 370                                 break;
 371                         }
 372
 373                         msg->elements[i].num_values = req->mods[i].attrib.num_values;
 374                         if (msg->elements[i].num_values > 0) {
 375                                 msg->elements[i].values = talloc_array(msg->elements, struct ldb_val,
 376                                                                        msg->elements[i].num_values);
 377                                 NT_STATUS_HAVE_NO_MEMORY(msg->elements[i].values);
 378
 379                                 for (j=0; j < msg->elements[i].num_values; j++) {
 380                                         if (!(req->mods[i].attrib.values[j].length > 0)) {
 381                                                 result = LDAP_OTHER;
 382                                                 errstr = "Empty attribute values are not allowed";
 383                                                 goto reply;
 384                                         }
 385                                         msg->elements[i].values[j].length = req->mods[i].attrib.values[j].length;
 386                                         msg->elements[i].values[j].data = req->mods[i].attrib.values[j].data;
 387                                 }
 388                         }
 389                 }
 390         } else {
 391                 result = LDAP_OTHER;
 392                 errstr = "No mods are not allowed";
 393                 goto reply;
 394         }
 395
 396 reply:
 397         modify_reply = ldapsrv_init_reply(call, LDAP_TAG_ModifyResponse);
 398         NT_STATUS_HAVE_NO_MEMORY(modify_reply);
 399
 400         if (result == LDAP_SUCCESS) {
 401                 ldb_ret = ldb_modify(samdb, msg);
 402                 result = map_ldb_error(samdb, ldb_ret, &errstr);
 403         }
 404
 405         modify_result = &modify_reply->msg->r.AddResponse;
 406         modify_result->dn = NULL;
 407         modify_result->resultcode = result;
 408         modify_result->errormessage = (errstr?talloc_strdup(modify_reply, errstr):NULL);
 409         modify_result->referral = NULL;
 410
 411         talloc_free(local_ctx);
 412
 413         ldapsrv_queue_reply(call, modify_reply);
 414         return NT_STATUS_OK;
 415
 416 }
 417
 418 static NTSTATUS ldapsrv_AddRequest(struct ldapsrv_call *call)
 419 {
 420         struct ldap_AddRequest *req = &call->request->r.AddRequest;
 421         struct ldap_Result *add_result;
 422         struct ldapsrv_reply *add_reply;
 423         void *local_ctx;
 424         struct ldb_context *samdb = call->conn->ldb;
 425         struct ldb_message *msg = NULL;
 426         struct ldb_dn *dn;
 427         const char *errstr = NULL;
 428         int result = LDAP_SUCCESS;
 429         int ldb_ret;
 430         int i,j;
 431
 432         DEBUG(10, ("AddRequest"));
 433         DEBUGADD(10, (" dn: %s", req->dn));
 434
 435         local_ctx = talloc_named(call, 0, "AddRequest local memory context");
 436         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 437
 438         dn = ldb_dn_new(local_ctx, samdb, req->dn);
 439         VALID_DN_SYNTAX(dn,1);
 440
 441         DEBUG(10, ("AddRequest: dn: [%s]\n", req->dn));
 442
 443         msg = talloc(local_ctx, struct ldb_message);
 444         NT_STATUS_HAVE_NO_MEMORY(msg);
 445
 446         msg->dn = dn;
 447         msg->private_data = NULL;
 448         msg->num_elements = 0;
 449         msg->elements = NULL;
 450
 451         if (req->num_attributes > 0) {
 452                 msg->num_elements = req->num_attributes;
 453                 msg->elements = talloc_array(msg, struct ldb_message_element, msg->num_elements);
 454                 NT_STATUS_HAVE_NO_MEMORY(msg->elements);
 455
 456                 for (i=0; i < msg->num_elements; i++) {
 457                         msg->elements[i].name = discard_const_p(char, req->attributes[i].name);
 458                         msg->elements[i].flags = 0;
 459                         msg->elements[i].num_values = 0;
 460                         msg->elements[i].values = NULL;
 461
 462                         if (req->attributes[i].num_values > 0) {
 463                                 msg->elements[i].num_values = req->attributes[i].num_values;
 464                                 msg->elements[i].values = talloc_array(msg->elements, struct ldb_val,
 465                                                                        msg->elements[i].num_values);
 466                                 NT_STATUS_HAVE_NO_MEMORY(msg->elements[i].values);
 467
 468                                 for (j=0; j < msg->elements[i].num_values; j++) {
 469                                         if (!(req->attributes[i].values[j].length > 0)) {
 470                                                 result = LDAP_OTHER;
 471                                                 errstr = "Empty attribute values are not allowed";
 472                                                 goto reply;
 473                                         }
 474                                         msg->elements[i].values[j].length = req->attributes[i].values[j].length;
 475                                         msg->elements[i].values[j].data = req->attributes[i].values[j].data;
 476                                 }
 477                         } else {
 478                                 result = LDAP_OTHER;
 479                                 errstr = "No attribute values are not allowed";
 480                                 goto reply;
 481                         }
 482                 }
 483         } else {
 484                 result = LDAP_OTHER;
 485                 errstr = "No attributes are not allowed";
 486                 goto reply;
 487         }
 488
 489 reply:
 490         add_reply = ldapsrv_init_reply(call, LDAP_TAG_AddResponse);
 491         NT_STATUS_HAVE_NO_MEMORY(add_reply);
 492
 493         if (result == LDAP_SUCCESS) {
 494                 ldb_ret = ldb_add(samdb, msg);
 495                 result = map_ldb_error(samdb, ldb_ret, &errstr);
 496         }
 497
 498         add_result = &add_reply->msg->r.AddResponse;
 499         add_result->dn = NULL;
 500         add_result->resultcode = result;
 501         add_result->errormessage = (errstr?talloc_strdup(add_reply,errstr):NULL);
 502         add_result->referral = NULL;
 503
 504         talloc_free(local_ctx);
 505
 506         ldapsrv_queue_reply(call, add_reply);
 507         return NT_STATUS_OK;
 508
 509 }
 510
 511 static NTSTATUS ldapsrv_DelRequest(struct ldapsrv_call *call)
 512 {
 513         struct ldap_DelRequest *req = &call->request->r.DelRequest;
 514         struct ldap_Result *del_result;
 515         struct ldapsrv_reply *del_reply;
 516         void *local_ctx;
 517         struct ldb_context *samdb = call->conn->ldb;
 518         struct ldb_dn *dn;
 519         const char *errstr = NULL;
 520         int result = LDAP_SUCCESS;
 521         int ldb_ret;
 522
 523         DEBUG(10, ("DelRequest"));
 524         DEBUGADD(10, (" dn: %s", req->dn));
 525
 526         local_ctx = talloc_named(call, 0, "DelRequest local memory context");
 527         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 528
 529         dn = ldb_dn_new(local_ctx, samdb, req->dn);
 530         VALID_DN_SYNTAX(dn,1);
 531
 532         DEBUG(10, ("DelRequest: dn: [%s]\n", req->dn));
 533
 534 reply:
 535         del_reply = ldapsrv_init_reply(call, LDAP_TAG_DelResponse);
 536         NT_STATUS_HAVE_NO_MEMORY(del_reply);
 537
 538         if (result == LDAP_SUCCESS) {
 539                 ldb_ret = ldb_delete(samdb, dn);
 540                 result = map_ldb_error(samdb, ldb_ret, &errstr);
 541         }
 542
 543         del_result = &del_reply->msg->r.DelResponse;
 544         del_result->dn = NULL;
 545         del_result->resultcode = result;
 546         del_result->errormessage = (errstr?talloc_strdup(del_reply,errstr):NULL);
 547         del_result->referral = NULL;
 548
 549         talloc_free(local_ctx);
 550
 551         ldapsrv_queue_reply(call, del_reply);
 552         return NT_STATUS_OK;
 553 }
 554
 555 static NTSTATUS ldapsrv_ModifyDNRequest(struct ldapsrv_call *call)
 556 {
 557         struct ldap_ModifyDNRequest *req = &call->request->r.ModifyDNRequest;
 558         struct ldap_Result *modifydn;
 559         struct ldapsrv_reply *modifydn_r;
 560         void *local_ctx;
 561         struct ldb_context *samdb = call->conn->ldb;
 562         struct ldb_dn *olddn, *newdn=NULL, *newrdn;
 563         struct ldb_dn *parentdn = NULL;
 564         const char *errstr = NULL;
 565         int result = LDAP_SUCCESS;
 566         int ldb_ret;
 567
 568         DEBUG(10, ("ModifyDNRequrest"));
 569         DEBUGADD(10, (" dn: %s", req->dn));
 570         DEBUGADD(10, (" newrdn: %s", req->newrdn));
 571
 572         local_ctx = talloc_named(call, 0, "ModifyDNRequest local memory context");
 573         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 574
 575         olddn = ldb_dn_new(local_ctx, samdb, req->dn);
 576         VALID_DN_SYNTAX(olddn, 2);
 577
 578         newrdn = ldb_dn_new(local_ctx, samdb, req->newrdn);
 579         VALID_DN_SYNTAX(newrdn, 1);
 580
 581         DEBUG(10, ("ModifyDNRequest: olddn: [%s]\n", req->dn));
 582         DEBUG(10, ("ModifyDNRequest: newrdn: [%s]\n", req->newrdn));
 583
 584         /* we can't handle the rename if we should not remove the old dn */
 585         if (!req->deleteolddn) {
 586                 result = LDAP_UNWILLING_TO_PERFORM;
 587                 errstr = "Old RDN must be deleted";
 588                 goto reply;
 589         }
 590
 591         if (req->newsuperior) {
 592                 parentdn = ldb_dn_new(local_ctx, samdb, 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         if ( ! ldb_dn_add_child_fmt(parentdn,
 609                                 "%s=%s",
 610                                 ldb_dn_get_rdn_name(newrdn),
 611                                 (char *)ldb_dn_get_rdn_val(newrdn)->data)) {
 612                 result = LDAP_OTHER;
 613                 goto reply;
 614         }
 615
 616 reply:
 617         modifydn_r = ldapsrv_init_reply(call, LDAP_TAG_ModifyDNResponse);
 618         NT_STATUS_HAVE_NO_MEMORY(modifydn_r);
 619
 620         if (result == LDAP_SUCCESS) {
 621                 ldb_ret = ldb_rename(samdb, olddn, newdn);
 622                 result = map_ldb_error(samdb, ldb_ret, &errstr);
 623         }
 624
 625         modifydn = &modifydn_r->msg->r.ModifyDNResponse;
 626         modifydn->dn = NULL;
 627         modifydn->resultcode = result;
 628         modifydn->errormessage = (errstr?talloc_strdup(modifydn_r,errstr):NULL);
 629         modifydn->referral = NULL;
 630
 631         talloc_free(local_ctx);
 632
 633         ldapsrv_queue_reply(call, modifydn_r);
 634         return NT_STATUS_OK;
 635 }
 636
 637 static NTSTATUS ldapsrv_CompareRequest(struct ldapsrv_call *call)
 638 {
 639         struct ldap_CompareRequest *req = &call->request->r.CompareRequest;
 640         struct ldap_Result *compare;
 641         struct ldapsrv_reply *compare_r;
 642         void *local_ctx;
 643         struct ldb_context *samdb = call->conn->ldb;
 644         struct ldb_result *res = NULL;
 645         struct ldb_dn *dn;
 646         const char *attrs[1];
 647         const char *errstr = NULL;
 648         const char *filter = NULL;
 649         int result = LDAP_SUCCESS;
 650         int ldb_ret;
 651
 652         DEBUG(10, ("CompareRequest"));
 653         DEBUGADD(10, (" dn: %s", req->dn));
 654
 655         local_ctx = talloc_named(call, 0, "CompareRequest local_memory_context");
 656         NT_STATUS_HAVE_NO_MEMORY(local_ctx);
 657
 658         dn = ldb_dn_new(local_ctx, samdb, req->dn);
 659         VALID_DN_SYNTAX(dn, 1);
 660
 661         DEBUG(10, ("CompareRequest: dn: [%s]\n", req->dn));
 662         filter = talloc_asprintf(local_ctx, "(%s=%*s)", req->attribute,
 663                                  (int)req->value.length, req->value.data);
 664         NT_STATUS_HAVE_NO_MEMORY(filter);
 665
 666         DEBUGADD(10, ("CompareRequest: attribute: [%s]\n", filter));
 667
 668         attrs[0] = NULL;
 669
 670 reply:
 671         compare_r = ldapsrv_init_reply(call, LDAP_TAG_CompareResponse);
 672         NT_STATUS_HAVE_NO_MEMORY(compare_r);
 673
 674         if (result == LDAP_SUCCESS) {
 675                 ldb_ret = ldb_search(samdb, dn, LDB_SCOPE_BASE, filter, attrs, &res);
 676                 talloc_steal(local_ctx, res);
 677                 if (ldb_ret != LDB_SUCCESS) {
 678                         result = map_ldb_error(samdb, ldb_ret, &errstr);
 679                         DEBUG(10,("CompareRequest: error: %s\n", errstr));
 680                 } else if (res->count == 0) {
 681                         DEBUG(10,("CompareRequest: doesn't matched\n"));
 682                         result = LDAP_COMPARE_FALSE;
 683                         errstr = NULL;
 684                 } else if (res->count == 1) {
 685                         DEBUG(10,("CompareRequest: matched\n"));
 686                         result = LDAP_COMPARE_TRUE;
 687                         errstr = NULL;
 688                 } else if (res->count > 1) {
 689                         result = LDAP_OTHER;
 690                         errstr = "too many objects match";
 691                         DEBUG(10,("CompareRequest: %d results: %s\n", res->count, errstr));
 692                 }
 693         }
 694
 695         compare = &compare_r->msg->r.CompareResponse;
 696         compare->dn = NULL;
 697         compare->resultcode = result;
 698         compare->errormessage = (errstr?talloc_strdup(compare_r,errstr):NULL);
 699         compare->referral = NULL;
 700
 701         talloc_free(local_ctx);
 702
 703         ldapsrv_queue_reply(call, compare_r);
 704         return NT_STATUS_OK;
 705 }
 706
 707 static NTSTATUS ldapsrv_AbandonRequest(struct ldapsrv_call *call)
 708 {
 709 /*      struct ldap_AbandonRequest *req = &call->request.r.AbandonRequest;*/
 710         DEBUG(10, ("AbandonRequest\n"));
 711         return NT_STATUS_OK;
 712 }
 713
 714 NTSTATUS ldapsrv_do_call(struct ldapsrv_call *call)
 715 {
 716         switch(call->request->type) {
 717         case LDAP_TAG_BindRequest:
 718                 return ldapsrv_BindRequest(call);
 719         case LDAP_TAG_UnbindRequest:
 720                 return ldapsrv_UnbindRequest(call);
 721         case LDAP_TAG_SearchRequest:
 722                 return ldapsrv_SearchRequest(call);
 723         case LDAP_TAG_ModifyRequest:
 724                 return ldapsrv_ModifyRequest(call);
 725         case LDAP_TAG_AddRequest:
 726                 return ldapsrv_AddRequest(call);
 727         case LDAP_TAG_DelRequest:
 728                 return ldapsrv_DelRequest(call);
 729         case LDAP_TAG_ModifyDNRequest:
 730                 return ldapsrv_ModifyDNRequest(call);
 731         case LDAP_TAG_CompareRequest:
 732                 return ldapsrv_CompareRequest(call);
 733         case LDAP_TAG_AbandonRequest:
 734                 return ldapsrv_AbandonRequest(call);
 735         case LDAP_TAG_ExtendedRequest:
 736                 return ldapsrv_ExtendedRequest(call);
 737         default:
 738                 return ldapsrv_unwilling(call, 2);
 739         }
 740 }