git.sur5r.net Git - openldap/blob - servers/slapd/bind.c

   1 /* bind.c - decode an ldap bind operation and pass it to a backend db */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
   5  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   6  */
   7
   8 /*
   9  * Copyright (c) 1995 Regents of the University of Michigan.
  10  * All rights reserved.
  11  *
  12  * Redistribution and use in source and binary forms are permitted
  13  * provided that this notice is preserved and that due credit is given
  14  * to the University of Michigan at Ann Arbor. The name of the University
  15  * may not be used to endorse or promote products derived from this
  16  * software without specific prior written permission. This software
  17  * is provided ``as is'' without express or implied warranty.
  18  */
  19
  20 #include "portable.h"
  21
  22 #include <stdio.h>
  23
  24 #include <ac/string.h>
  25 #include <ac/socket.h>
  26
  27 #include "ldap_pvt.h"
  28 #include "slap.h"
  29
  30 int
  31 do_bind(
  32     Connection  *conn,
  33     Operation   *op
  34 )
  35 {
  36         BerElement *ber = op->o_ber;
  37         ber_int_t version;
  38         ber_tag_t method;
  39         struct berval mech = { 0, NULL };
  40         struct berval dn = { 0, NULL };
  41         struct berval pdn = { 0, NULL };
  42         struct berval ndn = { 0, NULL };
  43         struct berval edn = { 0, NULL };
  44         ber_tag_t tag;
  45         int     rc = LDAP_SUCCESS;
  46         const char *text;
  47         struct berval cred = { 0, NULL };
  48         Backend *be = NULL;
  49
  50 #ifdef NEW_LOGGING
  51         LDAP_LOG( OPERATION, ENTRY, "do_bind: conn %d\n", conn->c_connid, 0, 0 );
  52 #else
  53         Debug( LDAP_DEBUG_TRACE, "do_bind\n", 0, 0, 0 );
  54 #endif
  55
  56         /*
  57          * Force to connection to "anonymous" until bind succeeds.
  58          */
  59         ldap_pvt_thread_mutex_lock( &conn->c_mutex );
  60         if ( conn->c_sasl_bind_in_progress ) be = conn->c_authz_backend;
  61         connection2anonymous( conn );
  62         if ( conn->c_sasl_bind_in_progress ) conn->c_authz_backend = be;
  63         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
  64
  65         if ( op->o_dn.bv_val != NULL ) {
  66                 free( op->o_dn.bv_val );
  67                 op->o_dn.bv_val = ch_strdup( "" );
  68                 op->o_dn.bv_len = 0;
  69         }
  70
  71         if ( op->o_ndn.bv_val != NULL ) {
  72                 free( op->o_ndn.bv_val );
  73                 op->o_ndn.bv_val = ch_strdup( "" );
  74                 op->o_ndn.bv_len = 0;
  75         }
  76
  77         /*
  78          * Parse the bind request.  It looks like this:
  79          *
  80          *      BindRequest ::= SEQUENCE {
  81          *              version         INTEGER,                 -- version
  82          *              name            DistinguishedName,       -- dn
  83          *              authentication  CHOICE {
  84          *                      simple          [0] OCTET STRING -- passwd
  85          *                      krbv42ldap      [1] OCTET STRING
  86          *                      krbv42dsa       [2] OCTET STRING
  87          *                      SASL            [3] SaslCredentials
  88          *              }
  89          *      }
  90          *
  91          *      SaslCredentials ::= SEQUENCE {
  92      *          mechanism           LDAPString,
  93      *          credentials         OCTET STRING OPTIONAL
  94          *      }
  95          */
  96
  97         tag = ber_scanf( ber, "{imt" /*}*/, &version, &dn, &method );
  98
  99         if ( tag == LBER_ERROR ) {
 100 #ifdef NEW_LOGGING
 101                 LDAP_LOG( OPERATION, ERR,
 102                         "do_bind: conn %d  ber_scanf failed\n", conn->c_connid, 0, 0 );
 103 #else
 104                 Debug( LDAP_DEBUG_ANY, "bind: ber_scanf failed\n", 0, 0, 0 );
 105 #endif
 106                 send_ldap_disconnect( conn, op,
 107                         LDAP_PROTOCOL_ERROR, "decoding error" );
 108                 rc = -1;
 109                 goto cleanup;
 110         }
 111
 112         op->o_protocol = version;
 113
 114         if( method != LDAP_AUTH_SASL ) {
 115                 tag = ber_scanf( ber, /*{*/ "m}", &cred );
 116
 117         } else {
 118                 tag = ber_scanf( ber, "{o" /*}*/, &mech );
 119
 120                 if ( tag != LBER_ERROR ) {
 121                         ber_len_t len;
 122                         tag = ber_peek_tag( ber, &len );
 123
 124                         if ( tag == LDAP_TAG_LDAPCRED ) {
 125                                 tag = ber_scanf( ber, "m", &cred );
 126                         } else {
 127                                 tag = LDAP_TAG_LDAPCRED;
 128                                 cred.bv_val = NULL;
 129                                 cred.bv_len = 0;
 130                         }
 131
 132                         if ( tag != LBER_ERROR ) {
 133                                 tag = ber_scanf( ber, /*{{*/ "}}" );
 134                         }
 135                 }
 136         }
 137
 138         if ( tag == LBER_ERROR ) {
 139                 send_ldap_disconnect( conn, op,
 140                         LDAP_PROTOCOL_ERROR,
 141                 "decoding error" );
 142                 rc = SLAPD_DISCONNECT;
 143                 goto cleanup;
 144         }
 145
 146         if( (rc = get_ctrls( conn, op, 1 )) != LDAP_SUCCESS ) {
 147 #ifdef NEW_LOGGING
 148                 LDAP_LOG( OPERATION, INFO,
 149                         "do_bind: conn %d  get_ctrls failed\n", conn->c_connid, 0, 0 );
 150 #else
 151                 Debug( LDAP_DEBUG_ANY, "do_bind: get_ctrls failed\n", 0, 0, 0 );
 152 #endif
 153                 goto cleanup;
 154         }
 155
 156         rc = dnPrettyNormal( NULL, &dn, &pdn, &ndn );
 157         if ( rc != LDAP_SUCCESS ) {
 158 #ifdef NEW_LOGGING
 159                 LDAP_LOG( OPERATION, INFO,
 160                         "do_bind: conn %d  invalid dn (%s)\n",
 161                         conn->c_connid, dn.bv_val, 0 );
 162 #else
 163                 Debug( LDAP_DEBUG_ANY, "bind: invalid dn (%s)\n",
 164                         dn.bv_val, 0, 0 );
 165 #endif
 166                 send_ldap_result( conn, op, rc = LDAP_INVALID_DN_SYNTAX, NULL,
 167                     "invalid DN", NULL, NULL );
 168                 goto cleanup;
 169         }
 170
 171         if( method == LDAP_AUTH_SASL ) {
 172 #ifdef NEW_LOGGING
 173                 LDAP_LOG( OPERATION,     DETAIL1,
 174                         "do_sasl_bind: conn %d  dn (%s) mech %s\n",
 175                         conn->c_connid, pdn.bv_val, mech.bv_val );
 176 #else
 177                 Debug( LDAP_DEBUG_TRACE, "do_sasl_bind: dn (%s) mech %s\n",
 178                         pdn.bv_val, mech.bv_val, NULL );
 179 #endif
 180
 181         } else {
 182 #ifdef NEW_LOGGING
 183                 LDAP_LOG( OPERATION, DETAIL1,
 184                         "do_bind: version=%ld dn=\"%s\" method=%ld\n",
 185                         (unsigned long) version, pdn.bv_val, (unsigned long)method );
 186 #else
 187                 Debug( LDAP_DEBUG_TRACE,
 188                         "do_bind: version=%ld dn=\"%s\" method=%ld\n",
 189                         (unsigned long) version,
 190                         pdn.bv_val, (unsigned long) method );
 191 #endif
 192         }
 193
 194         Statslog( LDAP_DEBUG_STATS, "conn=%lu op=%lu BIND dn=\"%s\" method=%ld\n",
 195             op->o_connid, op->o_opid, pdn.bv_val, (unsigned long) method, 0 );
 196
 197         if ( version < LDAP_VERSION_MIN || version > LDAP_VERSION_MAX ) {
 198 #ifdef NEW_LOGGING
 199                 LDAP_LOG( OPERATION, INFO,
 200                         "do_bind: conn %d  unknown version = %ld\n",
 201                         conn->c_connid, (unsigned long)version, 0 );
 202 #else
 203                 Debug( LDAP_DEBUG_ANY, "do_bind: unknown version=%ld\n",
 204                         (unsigned long) version, 0, 0 );
 205 #endif
 206                 send_ldap_result( conn, op, rc = LDAP_PROTOCOL_ERROR,
 207                         NULL, "requested protocol version not supported", NULL, NULL );
 208                 goto cleanup;
 209
 210         } else if (!( global_allows & SLAP_ALLOW_BIND_V2 ) &&
 211                 version < LDAP_VERSION3 )
 212         {
 213                 send_ldap_result( conn, op, rc = LDAP_PROTOCOL_ERROR,
 214                         NULL, "requested protocol version not allowed", NULL, NULL );
 215                 goto cleanup;
 216         }
 217
 218         /* we set connection version regardless of whether bind succeeds
 219          * or not.
 220          */
 221         ldap_pvt_thread_mutex_lock( &conn->c_mutex );
 222         conn->c_protocol = version;
 223         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 224
 225         /* check for inappropriate controls */
 226         if( get_manageDSAit( op ) == SLAP_CRITICAL_CONTROL ) {
 227                 send_ldap_result( conn, op,
 228                         rc = LDAP_UNAVAILABLE_CRITICAL_EXTENSION,
 229                         NULL, "manageDSAit control inappropriate",
 230                         NULL, NULL );
 231                 goto cleanup;
 232         }
 233
 234         /* Set the bindop for the benefit of in-directory SASL lookups */
 235         ldap_pvt_thread_mutex_lock( &conn->c_sasl_bindmutex );
 236         conn->c_sasl_bindop = op;
 237
 238         if ( method == LDAP_AUTH_SASL ) {
 239                 slap_ssf_t ssf = 0;
 240
 241                 if ( version < LDAP_VERSION3 ) {
 242 #ifdef NEW_LOGGING
 243                         LDAP_LOG( OPERATION, INFO,
 244                                 "do_bind: conn %d  sasl with LDAPv%ld\n",
 245                                 conn->c_connid, (unsigned long)version , 0 );
 246 #else
 247                         Debug( LDAP_DEBUG_ANY, "do_bind: sasl with LDAPv%ld\n",
 248                                 (unsigned long) version, 0, 0 );
 249 #endif
 250                         send_ldap_disconnect( conn, op,
 251                                 LDAP_PROTOCOL_ERROR, "SASL bind requires LDAPv3" );
 252                         rc = SLAPD_DISCONNECT;
 253                         goto cleanup;
 254                 }
 255
 256                 if( mech.bv_len == 0 ) {
 257 #ifdef NEW_LOGGING
 258                         LDAP_LOG( OPERATION, INFO,
 259                                    "do_bind: conn %d  no SASL mechanism provided\n",
 260                                    conn->c_connid, 0, 0 );
 261 #else
 262                         Debug( LDAP_DEBUG_ANY,
 263                                 "do_bind: no sasl mechanism provided\n",
 264                                 0, 0, 0 );
 265 #endif
 266                         send_ldap_result( conn, op, rc = LDAP_AUTH_METHOD_NOT_SUPPORTED,
 267                                 NULL, "no SASL mechanism provided", NULL, NULL );
 268                         goto cleanup;
 269                 }
 270
 271                 /* check restrictions */
 272                 rc = backend_check_restrictions( NULL, conn, op, &mech, &text );
 273                 if( rc != LDAP_SUCCESS ) {
 274                         send_ldap_result( conn, op, rc,
 275                                 NULL, text, NULL, NULL );
 276                         goto cleanup;
 277                 }
 278
 279                 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
 280                 if ( conn->c_sasl_bind_in_progress ) {
 281                         if((ber_bvcmp(&conn->c_sasl_bind_mech, &mech) != 0)) {
 282                                 /* mechanism changed between bind steps */
 283                                 slap_sasl_reset(conn);
 284                         }
 285                 } else {
 286                         conn->c_sasl_bind_mech = mech;
 287                         mech.bv_val = NULL;
 288                         mech.bv_len = 0;
 289                 }
 290                 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 291
 292                 rc = slap_sasl_bind( conn, op,
 293                         &pdn, &ndn,
 294                         &cred, &edn, &ssf );
 295
 296                 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
 297                 if( rc == LDAP_SUCCESS ) {
 298                         conn->c_dn = edn;
 299                         if( edn.bv_len != 0 ) {
 300                                 /* edn is always normalized already */
 301                                 ber_dupbv( &conn->c_ndn, &conn->c_dn );
 302                         }
 303                         conn->c_authmech = conn->c_sasl_bind_mech;
 304                         conn->c_sasl_bind_mech.bv_val = NULL;
 305                         conn->c_sasl_bind_mech.bv_len = 0;
 306                         conn->c_sasl_bind_in_progress = 0;
 307
 308                         conn->c_sasl_ssf = ssf;
 309                         if( ssf > conn->c_ssf ) {
 310                                 conn->c_ssf = ssf;
 311                         }
 312
 313                         if( conn->c_dn.bv_len != 0 ) {
 314                                 ber_len_t max = sockbuf_max_incoming;
 315                                 ber_sockbuf_ctrl( conn->c_sb,
 316                                         LBER_SB_OPT_SET_MAX_INCOMING, &max );
 317                         }
 318
 319 #ifdef NEW_LOGGING
 320                         LDAP_LOG( OPERATION, DETAIL1,
 321                                 "do_bind: SASL/%s bind: dn=\"%s\" ssf=%d\n",
 322                                 conn->c_authmech.bv_val, conn->c_dn.bv_val, ssf );
 323 #else
 324                         Debug( LDAP_DEBUG_TRACE,
 325                                 "do_bind: SASL/%s bind: dn=\"%s\" ssf=%d\n",
 326                                 conn->c_authmech.bv_val, conn->c_dn.bv_val, ssf );
 327 #endif
 328
 329                 } else if ( rc == LDAP_SASL_BIND_IN_PROGRESS ) {
 330                         conn->c_sasl_bind_in_progress = 1;
 331
 332                 } else {
 333                         if ( conn->c_sasl_bind_mech.bv_val ) {
 334                                 free( conn->c_sasl_bind_mech.bv_val );
 335                                 conn->c_sasl_bind_mech.bv_val = NULL;
 336                                 conn->c_sasl_bind_mech.bv_len = 0;
 337                         }
 338                         conn->c_sasl_bind_in_progress = 0;
 339                 }
 340                 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 341
 342                 goto cleanup;
 343
 344         } else {
 345                 /* Not SASL, cancel any in-progress bind */
 346                 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
 347
 348                 if ( conn->c_sasl_bind_mech.bv_val != NULL ) {
 349                         free(conn->c_sasl_bind_mech.bv_val);
 350                         conn->c_sasl_bind_mech.bv_val = NULL;
 351                         conn->c_sasl_bind_mech.bv_len = 0;
 352                 }
 353                 conn->c_sasl_bind_in_progress = 0;
 354
 355                 slap_sasl_reset( conn );
 356                 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 357         }
 358
 359         if ( method == LDAP_AUTH_SIMPLE ) {
 360                 /* accept "anonymous" binds */
 361                 if ( cred.bv_len == 0 || ndn.bv_len == 0 ) {
 362                         rc = LDAP_SUCCESS;
 363                         text = NULL;
 364
 365                         if( cred.bv_len &&
 366                                 !( global_allows & SLAP_ALLOW_BIND_ANON_CRED ))
 367                         {
 368                                 /* cred is not empty, disallow */
 369                                 rc = LDAP_INVALID_CREDENTIALS;
 370
 371                         } else if ( ndn.bv_len &&
 372                                 !( global_allows & SLAP_ALLOW_BIND_ANON_DN ))
 373                         {
 374                                 /* DN is not empty, disallow */
 375                                 rc = LDAP_UNWILLING_TO_PERFORM;
 376                                 text = "unwilling to allow anonymous bind with non-empty DN";
 377
 378                         } else if ( global_disallows & SLAP_DISALLOW_BIND_ANON ) {
 379                                 /* disallow */
 380                                 rc = LDAP_INAPPROPRIATE_AUTH;
 381                                 text = "anonymous bind disallowed";
 382
 383                         } else {
 384                                 rc = backend_check_restrictions( NULL, conn, op,
 385                                         &mech, &text );
 386                         }
 387
 388                         /*
 389                          * we already forced connection to "anonymous",
 390                          * just need to send success
 391                          */
 392                         send_ldap_result( conn, op, rc,
 393                                 NULL, text, NULL, NULL );
 394 #ifdef NEW_LOGGING
 395                         LDAP_LOG( OPERATION, DETAIL1,
 396                                    "do_bind: conn %d  v%d anonymous bind\n",
 397                                    conn->c_connid, version , 0 );
 398 #else
 399                         Debug( LDAP_DEBUG_TRACE, "do_bind: v%d anonymous bind\n",
 400                                 version, 0, 0 );
 401 #endif
 402                         goto cleanup;
 403
 404                 } else if ( global_disallows & SLAP_DISALLOW_BIND_SIMPLE ) {
 405                         /* disallow simple authentication */
 406                         rc = LDAP_UNWILLING_TO_PERFORM;
 407                         text = "unwilling to perform simple authentication";
 408
 409                         send_ldap_result( conn, op, rc,
 410                                 NULL, text, NULL, NULL );
 411 #ifdef NEW_LOGGING
 412                         LDAP_LOG( OPERATION, INFO,
 413                                    "do_bind: conn %d  v%d simple bind(%s) disallowed\n",
 414                                    conn->c_connid, version, ndn.bv_val );
 415 #else
 416                         Debug( LDAP_DEBUG_TRACE,
 417                                 "do_bind: v%d simple bind(%s) disallowed\n",
 418                                 version, ndn.bv_val, 0 );
 419 #endif
 420                         goto cleanup;
 421
 422                 } else if (( global_disallows & SLAP_DISALLOW_BIND_SIMPLE_UNPROTECTED )
 423                         && ( op->o_ssf < global_ssf_set.sss_ssf ))
 424                 {
 425                         rc = LDAP_CONFIDENTIALITY_REQUIRED;
 426                         text = "unwilling to perform simple authentication "
 427                                 "without confidentilty protection";
 428
 429                         send_ldap_result( conn, op, rc,
 430                                 NULL, text, NULL, NULL );
 431
 432 #ifdef NEW_LOGGING
 433                         LDAP_LOG( OPERATION, INFO, "do_bind: conn %d  "
 434                                 "v%d unprotected simple bind(%s) disallowed\n",
 435                                 conn->c_connid, version, ndn.bv_val );
 436 #else
 437                         Debug( LDAP_DEBUG_TRACE,
 438                                 "do_bind: v%d unprotected simple bind(%s) disallowed\n",
 439                                 version, ndn.bv_val, 0 );
 440 #endif
 441                         goto cleanup;
 442                 }
 443
 444 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND
 445         } else if ( method == LDAP_AUTH_KRBV41 || method == LDAP_AUTH_KRBV42 ) {
 446                 if ( global_disallows & SLAP_DISALLOW_BIND_KRBV4 ) {
 447                         /* disallow simple authentication */
 448                         rc = LDAP_UNWILLING_TO_PERFORM;
 449                         text = "unwilling to perform Kerberos V4 bind";
 450
 451                         send_ldap_result( conn, op, rc,
 452                                 NULL, text, NULL, NULL );
 453 #ifdef NEW_LOGGING
 454                         LDAP_LOG( OPERATION, DETAIL1,
 455                                    "do_bind: conn %d  v%d Kerberos V4 bind\n",
 456                                    conn->c_connid, version , 0 );
 457 #else
 458                         Debug( LDAP_DEBUG_TRACE, "do_bind: v%d Kerberos V4 bind\n",
 459                                 version, 0, 0 );
 460 #endif
 461                         goto cleanup;
 462                 }
 463 #endif
 464
 465         } else {
 466                 rc = LDAP_AUTH_METHOD_NOT_SUPPORTED;
 467                 text = "unknown authentication method";
 468
 469                 send_ldap_result( conn, op, rc,
 470                         NULL, text, NULL, NULL );
 471 #ifdef NEW_LOGGING
 472                 LDAP_LOG( OPERATION, INFO,
 473                            "do_bind: conn %ld  v%d unknown authentication method (%ld)\n",
 474                            conn->c_connid, version, method );
 475 #else
 476                 Debug( LDAP_DEBUG_TRACE,
 477                         "do_bind: v%d unknown authentication method (%ld)\n",
 478                         version, method, 0 );
 479 #endif
 480                 goto cleanup;
 481         }
 482
 483         /*
 484          * We could be serving multiple database backends.  Select the
 485          * appropriate one, or send a referral to our "referral server"
 486          * if we don't hold it.
 487          */
 488
 489         if ( (be = select_backend( &ndn, 0, 0 )) == NULL ) {
 490                 if ( default_referral ) {
 491                         BerVarray ref = referral_rewrite( default_referral,
 492                                 NULL, &pdn, LDAP_SCOPE_DEFAULT );
 493
 494                         send_ldap_result( conn, op, rc = LDAP_REFERRAL,
 495                                 NULL, NULL, ref ? ref : default_referral, NULL );
 496
 497                         ber_bvarray_free( ref );
 498
 499                 } else {
 500                         /* noSuchObject is not allowed to be returned by bind */
 501                         send_ldap_result( conn, op, rc = LDAP_INVALID_CREDENTIALS,
 502                                 NULL, NULL, NULL, NULL );
 503                 }
 504
 505                 goto cleanup;
 506         }
 507
 508         /* check restrictions */
 509         rc = backend_check_restrictions( be, conn, op, NULL, &text );
 510         if( rc != LDAP_SUCCESS ) {
 511                 send_ldap_result( conn, op, rc,
 512                         NULL, text, NULL, NULL );
 513                 goto cleanup;
 514         }
 515
 516         if ( be->be_bind ) {
 517                 int ret;
 518
 519                 /* deref suffix alias if appropriate */
 520                 suffix_alias( be, &ndn );
 521
 522                 ret = (*be->be_bind)( be, conn, op,
 523                         &pdn, &ndn, method, &cred, &edn );
 524
 525                 if ( ret == 0 ) {
 526                         ldap_pvt_thread_mutex_lock( &conn->c_mutex );
 527
 528                         if( conn->c_authz_backend == NULL ) {
 529                                 conn->c_authz_backend = be;
 530                         }
 531
 532                         if(edn.bv_len) {
 533                                 conn->c_dn = edn;
 534                         } else {
 535                                 conn->c_dn = pdn;
 536                                 pdn.bv_val = NULL;
 537                                 pdn.bv_len = 0;
 538                         }
 539
 540                         conn->c_ndn = ndn;
 541                         ndn.bv_val = NULL;
 542                         ndn.bv_len = 0;
 543
 544                         if( conn->c_dn.bv_len != 0 ) {
 545                                 ber_len_t max = sockbuf_max_incoming;
 546                                 ber_sockbuf_ctrl( conn->c_sb,
 547                                         LBER_SB_OPT_SET_MAX_INCOMING, &max );
 548                         }
 549
 550 #ifdef NEW_LOGGING
 551                         LDAP_LOG( OPERATION, DETAIL1,
 552                                 "do_bind: v%d bind: \"%s\" to \"%s\" \n",
 553                                 version, conn->c_dn.bv_val, conn->c_dn.bv_val );
 554 #else
 555                         Debug( LDAP_DEBUG_TRACE,
 556                                 "do_bind: v%d bind: \"%s\" to \"%s\"\n",
 557                                 version, dn.bv_val, conn->c_dn.bv_val );
 558 #endif
 559
 560                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 561
 562                         /* send this here to avoid a race condition */
 563                         send_ldap_result( conn, op, LDAP_SUCCESS,
 564                                 NULL, NULL, NULL, NULL );
 565
 566                 } else if (edn.bv_val != NULL) {
 567                         free( edn.bv_val );
 568                 }
 569
 570         } else {
 571                 send_ldap_result( conn, op, rc = LDAP_UNWILLING_TO_PERFORM,
 572                         NULL, "operation not supported within namingContext",
 573                         NULL, NULL );
 574         }
 575
 576 cleanup:
 577         if( conn->c_sasl_bindop != NULL ) {
 578                 ldap_pvt_thread_mutex_unlock( &conn->c_sasl_bindmutex );
 579                 conn->c_sasl_bindop = NULL;
 580         }
 581
 582         if( pdn.bv_val != NULL ) {
 583                 free( pdn.bv_val );
 584         }
 585         if( ndn.bv_val != NULL ) {
 586                 free( ndn.bv_val );
 587         }
 588         if ( mech.bv_val != NULL ) {
 589                 free( mech.bv_val );
 590         }
 591
 592         return rc;
 593 }