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 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2004 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
  17  * All rights reserved.
  18  *
  19  * Redistribution and use in source and binary forms are permitted
  20  * provided that this notice is preserved and that due credit is given
  21  * to the University of Michigan at Ann Arbor. The name of the University
  22  * may not be used to endorse or promote products derived from this
  23  * software without specific prior written permission. This software
  24  * is provided ``as is'' without express or implied warranty.
  25  */
  26
  27 #include "portable.h"
  28
  29 #include <stdio.h>
  30
  31 #include <ac/string.h>
  32 #include <ac/socket.h>
  33
  34 #include "ldap_pvt.h"
  35 #include "slap.h"
  36 #ifdef LDAP_SLAPI
  37 #include "slapi/slapi.h"
  38 #endif
  39
  40
  41 int
  42 do_bind(
  43     Operation   *op,
  44     SlapReply   *rs
  45 )
  46 {
  47         BerElement *ber = op->o_ber;
  48         ber_int_t version;
  49         ber_tag_t method;
  50         struct berval mech = BER_BVNULL;
  51         struct berval dn = BER_BVNULL;
  52         ber_tag_t tag;
  53         Backend *be = NULL;
  54
  55 #ifdef NEW_LOGGING
  56         LDAP_LOG( OPERATION, ENTRY, "do_bind: conn %d\n", op->o_connid, 0, 0 );
  57 #else
  58         Debug( LDAP_DEBUG_TRACE, "do_bind\n", 0, 0, 0 );
  59 #endif
  60
  61         /*
  62          * Force to connection to "anonymous" until bind succeeds.
  63          */
  64         ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
  65         if ( op->o_conn->c_sasl_bind_in_progress ) {
  66                 be = op->o_conn->c_authz_backend;
  67         }
  68         if ( op->o_conn->c_dn.bv_len ) {
  69                 /* log authorization identity demotion */
  70                 Statslog( LDAP_DEBUG_STATS,
  71                         "conn=%lu op=%lu BIND anonymous mech=implicit ssf=0\n",
  72                         op->o_connid, op->o_opid, 0, 0, 0 );
  73         }
  74         connection2anonymous( op->o_conn );
  75         if ( op->o_conn->c_sasl_bind_in_progress ) {
  76                 op->o_conn->c_authz_backend = be;
  77         }
  78         ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
  79         if ( op->o_dn.bv_val != NULL ) {
  80                 free( op->o_dn.bv_val );
  81                 op->o_dn.bv_val = ch_strdup( "" );
  82                 op->o_dn.bv_len = 0;
  83         }
  84         if ( op->o_ndn.bv_val != NULL ) {
  85                 free( op->o_ndn.bv_val );
  86                 op->o_ndn.bv_val = ch_strdup( "" );
  87                 op->o_ndn.bv_len = 0;
  88         }
  89
  90         /*
  91          * Parse the bind request.  It looks like this:
  92          *
  93          *      BindRequest ::= SEQUENCE {
  94          *              version         INTEGER,                 -- version
  95          *              name            DistinguishedName,       -- dn
  96          *              authentication  CHOICE {
  97          *                      simple          [0] OCTET STRING -- passwd
  98          *                      krbv42ldap      [1] OCTET STRING
  99          *                      krbv42dsa       [2] OCTET STRING
 100          *                      SASL            [3] SaslCredentials
 101          *              }
 102          *      }
 103          *
 104          *      SaslCredentials ::= SEQUENCE {
 105          *              mechanism           LDAPString,
 106          *              credentials         OCTET STRING OPTIONAL
 107          *      }
 108          */
 109
 110         tag = ber_scanf( ber, "{imt" /*}*/, &version, &dn, &method );
 111
 112         if ( tag == LBER_ERROR ) {
 113 #ifdef NEW_LOGGING
 114                 LDAP_LOG( OPERATION, ERR,
 115                         "do_bind: conn %d  ber_scanf failed\n", op->o_connid, 0, 0 );
 116 #else
 117                 Debug( LDAP_DEBUG_ANY, "bind: ber_scanf failed\n", 0, 0, 0 );
 118 #endif
 119                 send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
 120                 rs->sr_err = -1;
 121                 goto cleanup;
 122         }
 123
 124         op->o_protocol = version;
 125         op->orb_method = method;
 126
 127         if( op->orb_method != LDAP_AUTH_SASL ) {
 128                 tag = ber_scanf( ber, /*{*/ "m}", &op->orb_cred );
 129
 130         } else {
 131                 tag = ber_scanf( ber, "{m" /*}*/, &mech );
 132
 133                 if ( tag != LBER_ERROR ) {
 134                         ber_len_t len;
 135                         tag = ber_peek_tag( ber, &len );
 136
 137                         if ( tag == LDAP_TAG_LDAPCRED ) {
 138                                 tag = ber_scanf( ber, "m", &op->orb_cred );
 139                         } else {
 140                                 tag = LDAP_TAG_LDAPCRED;
 141                                 op->orb_cred.bv_val = NULL;
 142                                 op->orb_cred.bv_len = 0;
 143                         }
 144
 145                         if ( tag != LBER_ERROR ) {
 146                                 tag = ber_scanf( ber, /*{{*/ "}}" );
 147                         }
 148                 }
 149         }
 150
 151         if ( tag == LBER_ERROR ) {
 152                 send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
 153                 rs->sr_err = SLAPD_DISCONNECT;
 154                 goto cleanup;
 155         }
 156
 157         if( get_ctrls( op, rs, 1 ) != LDAP_SUCCESS ) {
 158 #ifdef NEW_LOGGING
 159                 LDAP_LOG( OPERATION, INFO,
 160                         "do_bind: conn %d  get_ctrls failed\n", op->o_connid, 0, 0 );
 161 #else
 162                 Debug( LDAP_DEBUG_ANY, "do_bind: get_ctrls failed\n", 0, 0, 0 );
 163 #endif
 164                 goto cleanup;
 165         }
 166
 167         /* We use the tmpmemctx here because it speeds up normalization.
 168          * However, we must dup with regular malloc when storing any
 169          * resulting DNs in the op or conn structures.
 170          */
 171         rs->sr_err = dnPrettyNormal( NULL, &dn, &op->o_req_dn, &op->o_req_ndn,
 172                 op->o_tmpmemctx );
 173         if ( rs->sr_err != LDAP_SUCCESS ) {
 174 #ifdef NEW_LOGGING
 175                 LDAP_LOG( OPERATION, INFO,
 176                         "do_bind: conn %d  invalid dn (%s)\n",
 177                         op->o_connid, dn.bv_val, 0 );
 178 #else
 179                 Debug( LDAP_DEBUG_ANY, "bind: invalid dn (%s)\n",
 180                         dn.bv_val, 0, 0 );
 181 #endif
 182                 send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid DN" );
 183                 goto cleanup;
 184         }
 185
 186         if( op->orb_method == LDAP_AUTH_SASL ) {
 187 #ifdef NEW_LOGGING
 188                 LDAP_LOG( OPERATION,     DETAIL1,
 189                         "do_sasl_bind: conn %d  dn (%s) mech %s\n",
 190                         op->o_connid, op->o_req_dn.bv_val, mech.bv_val );
 191 #else
 192                 Debug( LDAP_DEBUG_TRACE, "do_sasl_bind: dn (%s) mech %s\n",
 193                         op->o_req_dn.bv_val, mech.bv_val, NULL );
 194 #endif
 195
 196         } else {
 197 #ifdef NEW_LOGGING
 198                 LDAP_LOG( OPERATION, DETAIL1,
 199                         "do_bind: version=%ld dn=\"%s\" method=%ld\n",
 200                         (unsigned long) version, op->o_req_dn.bv_val,
 201                         (unsigned long) op->orb_method );
 202 #else
 203                 Debug( LDAP_DEBUG_TRACE,
 204                         "do_bind: version=%ld dn=\"%s\" method=%ld\n",
 205                         (unsigned long) version, op->o_req_dn.bv_val,
 206                         (unsigned long) op->orb_method );
 207 #endif
 208         }
 209
 210         Statslog( LDAP_DEBUG_STATS, "conn=%lu op=%lu BIND dn=\"%s\" method=%ld\n",
 211             op->o_connid, op->o_opid, op->o_req_dn.bv_val,
 212                 (unsigned long) op->orb_method, 0 );
 213
 214         if ( version < LDAP_VERSION_MIN || version > LDAP_VERSION_MAX ) {
 215 #ifdef NEW_LOGGING
 216                 LDAP_LOG( OPERATION, INFO,
 217                         "do_bind: conn %d  unknown version = %ld\n",
 218                         op->o_connid, (unsigned long)version, 0 );
 219 #else
 220                 Debug( LDAP_DEBUG_ANY, "do_bind: unknown version=%ld\n",
 221                         (unsigned long) version, 0, 0 );
 222 #endif
 223                 send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR,
 224                         "requested protocol version not supported" );
 225                 goto cleanup;
 226
 227         } else if (!( global_allows & SLAP_ALLOW_BIND_V2 ) &&
 228                 version < LDAP_VERSION3 )
 229         {
 230                 send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR,
 231                         "historical protocol version requested, use LDAPv3 instead" );
 232                 goto cleanup;
 233         }
 234
 235         /*
 236          * we set connection version regardless of whether bind succeeds or not.
 237          */
 238         ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
 239         op->o_conn->c_protocol = version;
 240         ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 241
 242         /* check for inappropriate controls */
 243         if( get_manageDSAit( op ) == SLAP_CRITICAL_CONTROL ) {
 244                 send_ldap_error( op, rs,
 245                         LDAP_UNAVAILABLE_CRITICAL_EXTENSION,
 246                         "manageDSAit control inappropriate" );
 247                 goto cleanup;
 248         }
 249
 250         /* Set the bindop for the benefit of in-directory SASL lookups */
 251         op->o_conn->c_sasl_bindop = op;
 252
 253         if ( op->orb_method == LDAP_AUTH_SASL ) {
 254                 if ( version < LDAP_VERSION3 ) {
 255 #ifdef NEW_LOGGING
 256                         LDAP_LOG( OPERATION, INFO,
 257                                 "do_bind: conn %d  sasl with LDAPv%ld\n",
 258                                 op->o_connid, (unsigned long)version , 0 );
 259 #else
 260                         Debug( LDAP_DEBUG_ANY, "do_bind: sasl with LDAPv%ld\n",
 261                                 (unsigned long) version, 0, 0 );
 262 #endif
 263                         send_ldap_discon( op, rs,
 264                                 LDAP_PROTOCOL_ERROR, "SASL bind requires LDAPv3" );
 265                         rs->sr_err = SLAPD_DISCONNECT;
 266                         goto cleanup;
 267                 }
 268
 269                 if( mech.bv_len == 0 ) {
 270 #ifdef NEW_LOGGING
 271                         LDAP_LOG( OPERATION, INFO,
 272                                    "do_bind: conn %d  no SASL mechanism provided\n",
 273                                    op->o_connid, 0, 0 );
 274 #else
 275                         Debug( LDAP_DEBUG_ANY,
 276                                 "do_bind: no sasl mechanism provided\n",
 277                                 0, 0, 0 );
 278 #endif
 279                         send_ldap_error( op, rs, LDAP_AUTH_METHOD_NOT_SUPPORTED,
 280                                 "no SASL mechanism provided" );
 281                         goto cleanup;
 282                 }
 283
 284                 /* check restrictions */
 285                 if( backend_check_restrictions( op, rs, &mech ) != LDAP_SUCCESS ) {
 286                         send_ldap_result( op, rs );
 287                         goto cleanup;
 288                 }
 289
 290                 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
 291                 if ( op->o_conn->c_sasl_bind_in_progress ) {
 292                         if( !bvmatch( &op->o_conn->c_sasl_bind_mech, &mech ) ) {
 293                                 /* mechanism changed between bind steps */
 294                                 slap_sasl_reset(op->o_conn);
 295                         }
 296                 } else {
 297                         ber_dupbv(&op->o_conn->c_sasl_bind_mech, &mech);
 298                 }
 299                 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 300
 301                 rs->sr_err = slap_sasl_bind( op, rs );
 302
 303                 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
 304                 if( rs->sr_err == LDAP_SUCCESS ) {
 305                         ber_dupbv(&op->o_conn->c_dn, &op->orb_edn);
 306                         if( op->orb_edn.bv_len != 0 ) {
 307                                 /* edn is always normalized already */
 308                                 ber_dupbv( &op->o_conn->c_ndn, &op->o_conn->c_dn );
 309                         }
 310                         op->o_tmpfree( op->orb_edn.bv_val, op->o_tmpmemctx );
 311                         BER_BVZERO( &op->orb_edn );
 312                         op->o_conn->c_authmech = op->o_conn->c_sasl_bind_mech;
 313                         BER_BVZERO( &op->o_conn->c_sasl_bind_mech );
 314                         op->o_conn->c_sasl_bind_in_progress = 0;
 315
 316                         op->o_conn->c_sasl_ssf = op->orb_ssf;
 317                         if( op->orb_ssf > op->o_conn->c_ssf ) {
 318                                 op->o_conn->c_ssf = op->orb_ssf;
 319                         }
 320
 321                         if( op->o_conn->c_dn.bv_len != 0 ) {
 322                                 ber_len_t max = sockbuf_max_incoming_auth;
 323                                 ber_sockbuf_ctrl( op->o_conn->c_sb,
 324                                         LBER_SB_OPT_SET_MAX_INCOMING, &max );
 325                         }
 326
 327                         /* log authorization identity */
 328                         Statslog( LDAP_DEBUG_STATS,
 329                                 "conn=%lu op=%lu BIND dn=\"%s\" mech=%s ssf=%d\n",
 330                                 op->o_connid, op->o_opid,
 331                                 op->o_conn->c_dn.bv_val ? op->o_conn->c_dn.bv_val : "<empty>",
 332                                 op->o_conn->c_authmech.bv_val, op->orb_ssf );
 333
 334 #ifdef NEW_LOGGING
 335                         LDAP_LOG( OPERATION, DETAIL1,
 336                                 "do_bind: SASL/%s bind: dn=\"%s\" ssf=%d\n",
 337                                 op->o_conn->c_authmech.bv_val,
 338                                 op->o_conn->c_dn.bv_val ? op->o_conn->c_dn.bv_val : "<empty>",
 339                                 op->orb_ssf );
 340 #else
 341                         Debug( LDAP_DEBUG_TRACE,
 342                                 "do_bind: SASL/%s bind: dn=\"%s\" ssf=%d\n",
 343                                 op->o_conn->c_authmech.bv_val,
 344                                 op->o_conn->c_dn.bv_val ? op->o_conn->c_dn.bv_val : "<empty>",
 345                                 op->orb_ssf );
 346 #endif
 347
 348                 } else if ( rs->sr_err == LDAP_SASL_BIND_IN_PROGRESS ) {
 349                         op->o_conn->c_sasl_bind_in_progress = 1;
 350
 351                 } else {
 352                         if ( op->o_conn->c_sasl_bind_mech.bv_val ) {
 353                                 free( op->o_conn->c_sasl_bind_mech.bv_val );
 354                                 op->o_conn->c_sasl_bind_mech.bv_val = NULL;
 355                                 op->o_conn->c_sasl_bind_mech.bv_len = 0;
 356                         }
 357                         op->o_conn->c_sasl_bind_in_progress = 0;
 358                 }
 359
 360 #ifdef LDAP_SLAPI
 361 #define pb      op->o_pb
 362                 /*
 363                  * Normally post-operation plugins are called only after the
 364                  * backend operation. Because the front-end performs SASL
 365                  * binds on behalf of the backend, we'll make a special
 366                  * exception to call the post-operation plugins after a
 367                  * SASL bind.
 368                  */
 369                 if ( pb ) {
 370                         slapi_int_pblock_set_operation( pb, op );
 371                         slapi_pblock_set( pb, SLAPI_BIND_TARGET, (void *)dn.bv_val );
 372                         slapi_pblock_set( pb, SLAPI_BIND_METHOD, (void *)op->orb_method );
 373                         slapi_pblock_set( pb, SLAPI_BIND_CREDENTIALS, (void *)&op->orb_cred );
 374                         slapi_pblock_set( pb, SLAPI_MANAGEDSAIT, (void *)(0) );
 375                         (void) slapi_int_call_plugins( op->o_bd, SLAPI_PLUGIN_POST_BIND_FN, pb );
 376                 }
 377 #endif /* LDAP_SLAPI */
 378
 379                 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 380
 381                 goto cleanup;
 382
 383         } else {
 384                 /* Not SASL, cancel any in-progress bind */
 385                 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
 386
 387                 if ( op->o_conn->c_sasl_bind_mech.bv_val != NULL ) {
 388                         free(op->o_conn->c_sasl_bind_mech.bv_val);
 389                         op->o_conn->c_sasl_bind_mech.bv_val = NULL;
 390                         op->o_conn->c_sasl_bind_mech.bv_len = 0;
 391                 }
 392                 op->o_conn->c_sasl_bind_in_progress = 0;
 393
 394                 slap_sasl_reset( op->o_conn );
 395                 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 396         }
 397
 398         if ( op->orb_method == LDAP_AUTH_SIMPLE ) {
 399                 ber_str2bv( "SIMPLE", sizeof("SIMPLE")-1, 0, &mech );
 400                 /* accept "anonymous" binds */
 401                 if ( op->orb_cred.bv_len == 0 || op->o_req_ndn.bv_len == 0 ) {
 402                         rs->sr_err = LDAP_SUCCESS;
 403
 404                         if( op->orb_cred.bv_len &&
 405                                 !( global_allows & SLAP_ALLOW_BIND_ANON_CRED ))
 406                         {
 407                                 /* cred is not empty, disallow */
 408                                 rs->sr_err = LDAP_INVALID_CREDENTIALS;
 409
 410                         } else if ( op->o_req_ndn.bv_len &&
 411                                 !( global_allows & SLAP_ALLOW_BIND_ANON_DN ))
 412                         {
 413                                 /* DN is not empty, disallow */
 414                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
 415                                 rs->sr_text =
 416                                         "unauthenticated bind (DN with no password) disallowed";
 417
 418                         } else if ( global_disallows & SLAP_DISALLOW_BIND_ANON ) {
 419                                 /* disallow */
 420                                 rs->sr_err = LDAP_INAPPROPRIATE_AUTH;
 421                                 rs->sr_text = "anonymous bind disallowed";
 422
 423                         } else {
 424                                 backend_check_restrictions( op, rs, &mech );
 425                         }
 426
 427                         /*
 428                          * we already forced connection to "anonymous",
 429                          * just need to send success
 430                          */
 431                         send_ldap_result( op, rs );
 432 #ifdef NEW_LOGGING
 433                         LDAP_LOG( OPERATION, DETAIL1,
 434                                 "do_bind: conn %d  v%d anonymous bind\n",
 435                                 op->o_connid, version , 0 );
 436 #else
 437                         Debug( LDAP_DEBUG_TRACE, "do_bind: v%d anonymous bind\n",
 438                                 version, 0, 0 );
 439 #endif
 440                         goto cleanup;
 441
 442                 } else if ( global_disallows & SLAP_DISALLOW_BIND_SIMPLE ) {
 443                         /* disallow simple authentication */
 444                         rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
 445                         rs->sr_text = "unwilling to perform simple authentication";
 446
 447                         send_ldap_result( op, rs );
 448 #ifdef NEW_LOGGING
 449                         LDAP_LOG( OPERATION, INFO,
 450                                 "do_bind: conn %d  v%d simple bind(%s) disallowed\n",
 451                                 op->o_connid, version, op->o_req_ndn.bv_val );
 452 #else
 453                         Debug( LDAP_DEBUG_TRACE,
 454                                 "do_bind: v%d simple bind(%s) disallowed\n",
 455                                 version, op->o_req_ndn.bv_val, 0 );
 456 #endif
 457                         goto cleanup;
 458                 }
 459
 460 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND
 461         } else if ( op->orb_method == LDAP_AUTH_KRBV41 ) {
 462                 if ( global_disallows & SLAP_DISALLOW_BIND_KRBV4 ) {
 463                         /* disallow krbv4 authentication */
 464                         rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
 465                         rs->sr_text = "unwilling to perform Kerberos V4 bind";
 466
 467                         send_ldap_result( op, rs );
 468
 469 #ifdef NEW_LOGGING
 470                         LDAP_LOG( OPERATION, DETAIL1,
 471                                 "do_bind: conn %d  v%d Kerberos V4 (step 1) bind refused\n",
 472                                 op->o_connid, version , 0 );
 473 #else
 474                         Debug( LDAP_DEBUG_TRACE,
 475                                 "do_bind: v%d Kerberos V4 (step 1) bind refused\n",
 476                                 version, 0, 0 );
 477 #endif
 478                         goto cleanup;
 479                 }
 480                 ber_str2bv( "KRBV4", sizeof("KRBV4")-1, 0, &mech );
 481
 482         } else if ( op->orb_method == LDAP_AUTH_KRBV42 ) {
 483                 rs->sr_err = LDAP_AUTH_METHOD_NOT_SUPPORTED;
 484                 rs->sr_text = "Kerberos V4 (step 2) bind not supported";
 485                 send_ldap_result( op, rs );
 486
 487 #ifdef NEW_LOGGING
 488                 LDAP_LOG( OPERATION, DETAIL1,
 489                         "do_bind: conn %d  v%d Kerberos V4 (step 2) bind refused\n",
 490                         op->o_connid, version , 0 );
 491 #else
 492                 Debug( LDAP_DEBUG_TRACE,
 493                         "do_bind: v%d Kerberos V4 (step 2) bind refused\n",
 494                         version, 0, 0 );
 495 #endif
 496                 goto cleanup;
 497 #endif
 498
 499         } else {
 500                 rs->sr_err = LDAP_AUTH_METHOD_NOT_SUPPORTED;
 501                 rs->sr_text = "unknown authentication method";
 502
 503                 send_ldap_result( op, rs );
 504 #ifdef NEW_LOGGING
 505                 LDAP_LOG( OPERATION, INFO,
 506                         "do_bind: conn %ld  v%d unknown authentication method (%ld)\n",
 507                         op->o_connid, version, op->orb_method );
 508 #else
 509                 Debug( LDAP_DEBUG_TRACE,
 510                         "do_bind: v%d unknown authentication method (%ld)\n",
 511                         version, op->orb_method, 0 );
 512 #endif
 513                 goto cleanup;
 514         }
 515
 516         /*
 517          * We could be serving multiple database backends.  Select the
 518          * appropriate one, or send a referral to our "referral server"
 519          * if we don't hold it.
 520          */
 521
 522         if ( (op->o_bd = select_backend( &op->o_req_ndn, 0, 0 )) == NULL ) {
 523                 if ( default_referral ) {
 524                         rs->sr_ref = referral_rewrite( default_referral,
 525                                 NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 526                         if (!rs->sr_ref) rs->sr_ref = default_referral;
 527
 528                         rs->sr_err = LDAP_REFERRAL;
 529                         send_ldap_result( op, rs );
 530
 531                         if (rs->sr_ref != default_referral) ber_bvarray_free( rs->sr_ref );
 532
 533                 } else {
 534                         /* noSuchObject is not allowed to be returned by bind */
 535                         rs->sr_err = LDAP_INVALID_CREDENTIALS;
 536                         send_ldap_result( op, rs );
 537                 }
 538
 539                 goto cleanup;
 540         }
 541
 542         /* check restrictions */
 543         if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
 544                 send_ldap_result( op, rs );
 545                 goto cleanup;
 546         }
 547
 548 #ifdef LDAP_SLAPI
 549         if ( pb ) {
 550                 int rc;
 551                 slapi_int_pblock_set_operation( pb, op );
 552                 slapi_pblock_set( pb, SLAPI_BIND_TARGET, (void *)dn.bv_val );
 553                 slapi_pblock_set( pb, SLAPI_BIND_METHOD, (void *)op->orb_method );
 554                 slapi_pblock_set( pb, SLAPI_BIND_CREDENTIALS, (void *)&op->orb_cred );
 555                 slapi_pblock_set( pb, SLAPI_MANAGEDSAIT, (void *)(0) );
 556                 slapi_pblock_set( pb, SLAPI_CONN_DN, (void *)(0) );
 557
 558                 rc = slapi_int_call_plugins( op->o_bd, SLAPI_PLUGIN_PRE_BIND_FN, pb );
 559
 560 #ifdef NEW_LOGGING
 561                 LDAP_LOG( OPERATION, INFO,
 562                         "do_bind: Bind preoperation plugin returned %d\n",
 563                         rs->sr_err, 0, 0);
 564 #else
 565                 Debug(LDAP_DEBUG_TRACE,
 566                         "do_bind: Bind preoperation plugin returned %d.\n",
 567                         rs->sr_err, 0, 0);
 568 #endif
 569
 570                 switch ( rc ) {
 571                 case SLAPI_BIND_SUCCESS:
 572                         /* Continue with backend processing */
 573                         break;
 574                 case SLAPI_BIND_FAIL:
 575                         /* Failure, server sends result */
 576                         rs->sr_err = LDAP_INVALID_CREDENTIALS;
 577                         send_ldap_result( op, rs );
 578                         goto cleanup;
 579                         break;
 580                 case SLAPI_BIND_ANONYMOUS:
 581                         /* SLAPI_BIND_ANONYMOUS is undocumented XXX */
 582                 default:
 583                         /* Authoritative, plugin sent result, or no plugins called. */
 584                         if ( slapi_pblock_get( op->o_pb, SLAPI_RESULT_CODE,
 585                                 (void *)&rs->sr_err) != 0 )
 586                         {
 587                                 rs->sr_err = LDAP_OTHER;
 588                         }
 589
 590                         op->orb_edn.bv_val = NULL;
 591                         op->orb_edn.bv_len = 0;
 592
 593                         if ( rs->sr_err == LDAP_SUCCESS ) {
 594                                 slapi_pblock_get( pb, SLAPI_CONN_DN,
 595                                         (void *)&op->orb_edn.bv_val );
 596                                 if ( op->orb_edn.bv_val == NULL ) {
 597                                         if ( rc == 1 ) {
 598                                                 /* No plugins were called; continue. */
 599                                                 break;
 600                                         }
 601                                 } else {
 602                                         op->orb_edn.bv_len = strlen( op->orb_edn.bv_val );
 603                                 }
 604                                 rs->sr_err = dnPrettyNormal( NULL, &op->orb_edn,
 605                                         &op->o_req_dn, &op->o_req_ndn, op->o_tmpmemctx );
 606                                 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
 607                                 ber_dupbv(&op->o_conn->c_dn, &op->o_req_dn);
 608                                 ber_dupbv(&op->o_conn->c_ndn, &op->o_req_ndn);
 609                                 op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx );
 610                                 op->o_req_dn.bv_val = NULL;
 611                                 op->o_req_dn.bv_len = 0;
 612                                 op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
 613                                 op->o_req_ndn.bv_val = NULL;
 614                                 op->o_req_ndn.bv_len = 0;
 615                                 if ( op->o_conn->c_dn.bv_len != 0 ) {
 616                                         ber_len_t max = sockbuf_max_incoming_auth;
 617                                         ber_sockbuf_ctrl( op->o_conn->c_sb,
 618                                                 LBER_SB_OPT_SET_MAX_INCOMING, &max );
 619                                 }
 620                                 /* log authorization identity */
 621                                 Statslog( LDAP_DEBUG_STATS,
 622                                         "conn=%lu op=%lu BIND dn=\"%s\" mech=%s (SLAPI) ssf=0\n",
 623                                         op->o_connid, op->o_opid,
 624                                         op->o_conn->c_dn.bv_val ? op->o_conn->c_dn.bv_val : "<empty>",
 625                                         mech.bv_val, 0 );
 626                                 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 627                         }
 628                         goto cleanup;
 629                         break;
 630                 }
 631         }
 632 #endif /* LDAP_SLAPI */
 633
 634         if( op->o_bd->be_bind ) {
 635                 rs->sr_err = (op->o_bd->be_bind)( op, rs );
 636
 637                 if ( rs->sr_err == 0 ) {
 638                         ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
 639
 640                         if( op->o_conn->c_authz_backend == NULL ) {
 641                                 op->o_conn->c_authz_backend = op->o_bd;
 642                         }
 643
 644                         /* be_bind returns regular/global edn */
 645                         if( op->orb_edn.bv_len ) {
 646                                 op->o_conn->c_dn = op->orb_edn;
 647                         } else {
 648                                 ber_dupbv(&op->o_conn->c_dn, &op->o_req_dn);
 649                         }
 650
 651                         ber_dupbv( &op->o_conn->c_ndn, &op->o_req_ndn );
 652
 653                         if( op->o_conn->c_dn.bv_len != 0 ) {
 654                                 ber_len_t max = sockbuf_max_incoming_auth;
 655                                 ber_sockbuf_ctrl( op->o_conn->c_sb,
 656                                         LBER_SB_OPT_SET_MAX_INCOMING, &max );
 657                         }
 658
 659                         /* log authorization identity */
 660                         Statslog( LDAP_DEBUG_STATS,
 661                                 "conn=%lu op=%lu BIND dn=\"%s\" mech=%s ssf=0\n",
 662                                 op->o_connid, op->o_opid,
 663                                 op->o_conn->c_dn.bv_val, mech.bv_val, 0 );
 664
 665 #ifdef NEW_LOGGING
 666                         LDAP_LOG( OPERATION, DETAIL1,
 667                                 "do_bind: v%d bind: \"%s\" to \"%s\" \n",
 668                                 version, op->o_conn->c_dn.bv_val, op->o_conn->c_dn.bv_val );
 669 #else
 670                         Debug( LDAP_DEBUG_TRACE,
 671                                 "do_bind: v%d bind: \"%s\" to \"%s\"\n",
 672                                 version, dn.bv_val, op->o_conn->c_dn.bv_val );
 673 #endif
 674
 675                         ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 676
 677                         /* send this here to avoid a race condition */
 678                         send_ldap_result( op, rs );
 679
 680                 } else if (op->orb_edn.bv_val != NULL) {
 681                         free( op->orb_edn.bv_val );
 682                 }
 683
 684         } else {
 685                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 686                         "operation not supported within naming context" );
 687         }
 688
 689 #ifdef LDAP_SLAPI
 690         if ( pb != NULL &&
 691                 slapi_int_call_plugins( op->o_bd, SLAPI_PLUGIN_POST_BIND_FN, pb ) < 0 )
 692         {
 693 #ifdef NEW_LOGGING
 694                 LDAP_LOG( OPERATION, INFO,
 695                         "do_bind: Bind postoperation plugins failed\n",
 696                         0, 0, 0);
 697 #else
 698                 Debug(LDAP_DEBUG_TRACE,
 699                         "do_bind: Bind postoperation plugins failed.\n",
 700                         0, 0, 0);
 701 #endif
 702         }
 703 #endif /* LDAP_SLAPI */
 704
 705 cleanup:
 706         if ( rs->sr_err == LDAP_SUCCESS ) {
 707                 if ( op->orb_method != LDAP_AUTH_SASL ) {
 708                         ber_dupbv( &op->o_conn->c_authmech, &mech );
 709                 }
 710                 op->o_conn->c_authtype = op->orb_method;
 711         }
 712
 713         op->o_conn->c_sasl_bindop = NULL;
 714
 715         if( op->o_req_dn.bv_val != NULL ) {
 716                 slap_sl_free( op->o_req_dn.bv_val, op->o_tmpmemctx );
 717                 op->o_req_dn.bv_val = NULL;
 718         }
 719         if( op->o_req_ndn.bv_val != NULL ) {
 720                 slap_sl_free( op->o_req_ndn.bv_val, op->o_tmpmemctx );
 721                 op->o_req_ndn.bv_val = NULL;
 722         }
 723
 724         return rs->sr_err;
 725 }