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         BerElement *ber = op->o_ber;
  47         ber_int_t version;
  48         ber_tag_t method;
  49         struct berval mech = BER_BVNULL;
  50         struct berval dn = BER_BVNULL;
  51         ber_tag_t tag;
  52         Backend *be = NULL;
  53
  54 #ifdef NEW_LOGGING
  55         LDAP_LOG( OPERATION, ENTRY, "do_bind: conn %d\n", op->o_connid, 0, 0 );
  56 #else
  57         Debug( LDAP_DEBUG_TRACE, "do_bind\n", 0, 0, 0 );
  58 #endif
  59
  60         /*
  61          * Force to connection to "anonymous" until bind succeeds.
  62          */
  63         ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
  64         if ( op->o_conn->c_sasl_bind_in_progress ) {
  65                 be = op->o_conn->c_authz_backend;
  66         }
  67         if ( op->o_conn->c_dn.bv_len ) {
  68                 /* log authorization identity demotion */
  69                 Statslog( LDAP_DEBUG_STATS,
  70                         "conn=%lu op=%lu BIND anonymous mech=implicit ssf=0\n",
  71                         op->o_connid, op->o_opid, 0, 0, 0 );
  72         }
  73         connection2anonymous( op->o_conn );
  74         if ( op->o_conn->c_sasl_bind_in_progress ) {
  75                 op->o_conn->c_authz_backend = be;
  76         }
  77         ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
  78         if ( op->o_dn.bv_val != NULL ) {
  79                 free( op->o_dn.bv_val );
  80                 op->o_dn.bv_val = ch_strdup( "" );
  81                 op->o_dn.bv_len = 0;
  82         }
  83         if ( op->o_ndn.bv_val != NULL ) {
  84                 free( op->o_ndn.bv_val );
  85                 op->o_ndn.bv_val = ch_strdup( "" );
  86                 op->o_ndn.bv_len = 0;
  87         }
  88
  89         /*
  90          * Parse the bind request.  It looks like this:
  91          *
  92          *      BindRequest ::= SEQUENCE {
  93          *              version         INTEGER,                 -- version
  94          *              name            DistinguishedName,       -- dn
  95          *              authentication  CHOICE {
  96          *                      simple          [0] OCTET STRING -- passwd
  97          *                      krbv42ldap      [1] OCTET STRING
  98          *                      krbv42dsa       [2] OCTET STRING
  99          *                      SASL            [3] SaslCredentials
 100          *              }
 101          *      }
 102          *
 103          *      SaslCredentials ::= SEQUENCE {
 104          *              mechanism           LDAPString,
 105          *              credentials         OCTET STRING OPTIONAL
 106          *      }
 107          */
 108
 109         tag = ber_scanf( ber, "{imt" /*}*/, &version, &dn, &method );
 110
 111         if ( tag == LBER_ERROR ) {
 112 #ifdef NEW_LOGGING
 113                 LDAP_LOG( OPERATION, ERR,
 114                         "do_bind: conn %d  ber_scanf failed\n", op->o_connid, 0, 0 );
 115 #else
 116                 Debug( LDAP_DEBUG_ANY, "bind: ber_scanf failed\n", 0, 0, 0 );
 117 #endif
 118                 send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
 119                 rs->sr_err = SLAPD_DISCONNECT;
 120                 goto cleanup;
 121         }
 122
 123         op->o_protocol = version;
 124         op->orb_method = method;
 125
 126         if( op->orb_method != LDAP_AUTH_SASL ) {
 127                 tag = ber_scanf( ber, /*{*/ "m}", &op->orb_cred );
 128
 129         } else {
 130                 tag = ber_scanf( ber, "{m" /*}*/, &mech );
 131
 132                 if ( tag != LBER_ERROR ) {
 133                         ber_len_t len;
 134                         tag = ber_peek_tag( ber, &len );
 135
 136                         if ( tag == LDAP_TAG_LDAPCRED ) {
 137                                 tag = ber_scanf( ber, "m", &op->orb_cred );
 138                         } else {
 139                                 tag = LDAP_TAG_LDAPCRED;
 140                                 BER_BVZERO( &op->orb_cred );
 141                         }
 142
 143                         if ( tag != LBER_ERROR ) {
 144                                 tag = ber_scanf( ber, /*{{*/ "}}" );
 145                         }
 146                 }
 147         }
 148
 149         if ( tag == LBER_ERROR ) {
 150                 send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
 151                 rs->sr_err = SLAPD_DISCONNECT;
 152                 goto cleanup;
 153         }
 154
 155         if( get_ctrls( op, rs, 1 ) != LDAP_SUCCESS ) {
 156 #ifdef NEW_LOGGING
 157                 LDAP_LOG( OPERATION, INFO,
 158                         "do_bind: conn %d  get_ctrls failed\n", op->o_connid, 0, 0 );
 159 #else
 160                 Debug( LDAP_DEBUG_ANY, "do_bind: get_ctrls failed\n", 0, 0, 0 );
 161 #endif
 162                 goto cleanup;
 163         }
 164
 165         /* We use the tmpmemctx here because it speeds up normalization.
 166          * However, we must dup with regular malloc when storing any
 167          * resulting DNs in the op or conn structures.
 168          */
 169         rs->sr_err = dnPrettyNormal( NULL, &dn, &op->o_req_dn, &op->o_req_ndn,
 170                 op->o_tmpmemctx );
 171         if ( rs->sr_err != LDAP_SUCCESS ) {
 172 #ifdef NEW_LOGGING
 173                 LDAP_LOG( OPERATION, INFO,
 174                         "do_bind: conn %d  invalid dn (%s)\n",
 175                         op->o_connid, dn.bv_val, 0 );
 176 #else
 177                 Debug( LDAP_DEBUG_ANY, "bind: invalid dn (%s)\n",
 178                         dn.bv_val, 0, 0 );
 179 #endif
 180                 send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid DN" );
 181                 goto cleanup;
 182         }
 183
 184         if( op->orb_method == LDAP_AUTH_SASL ) {
 185 #ifdef NEW_LOGGING
 186                 LDAP_LOG( OPERATION,     DETAIL1,
 187                         "do_sasl_bind: conn %d  dn (%s) mech %s\n",
 188                         op->o_connid, op->o_req_dn.bv_val, mech.bv_val );
 189 #else
 190                 Debug( LDAP_DEBUG_TRACE, "do_sasl_bind: dn (%s) mech %s\n",
 191                         op->o_req_dn.bv_val, mech.bv_val, NULL );
 192 #endif
 193
 194         } else {
 195 #ifdef NEW_LOGGING
 196                 LDAP_LOG( OPERATION, DETAIL1,
 197                         "do_bind: version=%ld dn=\"%s\" method=%ld\n",
 198                         (unsigned long) version, op->o_req_dn.bv_val,
 199                         (unsigned long) op->orb_method );
 200 #else
 201                 Debug( LDAP_DEBUG_TRACE,
 202                         "do_bind: version=%ld dn=\"%s\" method=%ld\n",
 203                         (unsigned long) version, op->o_req_dn.bv_val,
 204                         (unsigned long) op->orb_method );
 205 #endif
 206         }
 207
 208         Statslog( LDAP_DEBUG_STATS, "conn=%lu op=%lu BIND dn=\"%s\" method=%ld\n",
 209             op->o_connid, op->o_opid, op->o_req_dn.bv_val,
 210                 (unsigned long) op->orb_method, 0 );
 211
 212         if ( version < LDAP_VERSION_MIN || version > LDAP_VERSION_MAX ) {
 213 #ifdef NEW_LOGGING
 214                 LDAP_LOG( OPERATION, INFO,
 215                         "do_bind: conn %d  unknown version = %ld\n",
 216                         op->o_connid, (unsigned long)version, 0 );
 217 #else
 218                 Debug( LDAP_DEBUG_ANY, "do_bind: unknown version=%ld\n",
 219                         (unsigned long) version, 0, 0 );
 220 #endif
 221                 send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR,
 222                         "requested protocol version not supported" );
 223                 goto cleanup;
 224
 225         } else if (!( global_allows & SLAP_ALLOW_BIND_V2 ) &&
 226                 version < LDAP_VERSION3 )
 227         {
 228                 send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR,
 229                         "historical protocol version requested, use LDAPv3 instead" );
 230                 goto cleanup;
 231         }
 232
 233         /*
 234          * we set connection version regardless of whether bind succeeds or not.
 235          */
 236         ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
 237         op->o_conn->c_protocol = version;
 238         ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 239
 240         op->orb_tmp_mech = mech;
 241
 242         op->o_bd = frontendDB;
 243         rs->sr_err = frontendDB->be_bind( op, rs );
 244
 245 cleanup:
 246         if ( rs->sr_err == LDAP_SUCCESS ) {
 247                 if ( op->orb_method != LDAP_AUTH_SASL ) {
 248                         ber_dupbv( &op->o_conn->c_authmech, &mech );
 249                 }
 250                 op->o_conn->c_authtype = op->orb_method;
 251         }
 252
 253         op->o_conn->c_sasl_bindop = NULL;
 254
 255         if( op->o_req_dn.bv_val != NULL ) {
 256                 slap_sl_free( op->o_req_dn.bv_val, op->o_tmpmemctx );
 257                 BER_BVZERO( &op->o_req_dn );
 258         }
 259         if( op->o_req_ndn.bv_val != NULL ) {
 260                 slap_sl_free( op->o_req_ndn.bv_val, op->o_tmpmemctx );
 261                 BER_BVZERO( &op->o_req_ndn );
 262         }
 263
 264         return rs->sr_err;
 265 }
 266
 267 int
 268 fe_op_bind( Operation *op, SlapReply *rs )
 269 {
 270         struct berval   mech = op->orb_tmp_mech;
 271
 272         /* check for inappropriate controls */
 273         if( get_manageDSAit( op ) == SLAP_CRITICAL_CONTROL ) {
 274                 send_ldap_error( op, rs,
 275                         LDAP_UNAVAILABLE_CRITICAL_EXTENSION,
 276                         "manageDSAit control inappropriate" );
 277                 goto cleanup;
 278         }
 279
 280         /* Set the bindop for the benefit of in-directory SASL lookups */
 281         op->o_conn->c_sasl_bindop = op;
 282
 283         if ( op->orb_method == LDAP_AUTH_SASL ) {
 284                 if ( op->o_protocol < LDAP_VERSION3 ) {
 285 #ifdef NEW_LOGGING
 286                         LDAP_LOG( OPERATION, INFO,
 287                                 "do_bind: conn %d  sasl with LDAPv%ld\n",
 288                                 op->o_connid, (unsigned long)op->o_protocol, 0 );
 289 #else
 290                         Debug( LDAP_DEBUG_ANY, "do_bind: sasl with LDAPv%ld\n",
 291                                 (unsigned long)op->o_protocol, 0, 0 );
 292 #endif
 293                         send_ldap_discon( op, rs,
 294                                 LDAP_PROTOCOL_ERROR, "SASL bind requires LDAPv3" );
 295                         rs->sr_err = SLAPD_DISCONNECT;
 296                         goto cleanup;
 297                 }
 298
 299                 if( mech.bv_len == 0 ) {
 300 #ifdef NEW_LOGGING
 301                         LDAP_LOG( OPERATION, INFO,
 302                                    "do_bind: conn %d  no SASL mechanism provided\n",
 303                                    op->o_connid, 0, 0 );
 304 #else
 305                         Debug( LDAP_DEBUG_ANY,
 306                                 "do_bind: no sasl mechanism provided\n",
 307                                 0, 0, 0 );
 308 #endif
 309                         send_ldap_error( op, rs, LDAP_AUTH_METHOD_NOT_SUPPORTED,
 310                                 "no SASL mechanism provided" );
 311                         goto cleanup;
 312                 }
 313
 314                 /* check restrictions */
 315                 if( backend_check_restrictions( op, rs, &mech ) != LDAP_SUCCESS ) {
 316                         send_ldap_result( op, rs );
 317                         goto cleanup;
 318                 }
 319
 320                 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
 321                 if ( op->o_conn->c_sasl_bind_in_progress ) {
 322                         if( !bvmatch( &op->o_conn->c_sasl_bind_mech, &mech ) ) {
 323                                 /* mechanism changed between bind steps */
 324                                 slap_sasl_reset(op->o_conn);
 325                         }
 326                 } else {
 327                         ber_dupbv(&op->o_conn->c_sasl_bind_mech, &mech);
 328                 }
 329                 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 330
 331                 rs->sr_err = slap_sasl_bind( op, rs );
 332
 333                 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
 334                 if( rs->sr_err == LDAP_SUCCESS ) {
 335                         ber_dupbv(&op->o_conn->c_dn, &op->orb_edn);
 336                         if( op->orb_edn.bv_len != 0 ) {
 337                                 /* edn is always normalized already */
 338                                 ber_dupbv( &op->o_conn->c_ndn, &op->o_conn->c_dn );
 339                         }
 340                         op->o_tmpfree( op->orb_edn.bv_val, op->o_tmpmemctx );
 341                         BER_BVZERO( &op->orb_edn );
 342                         op->o_conn->c_authmech = op->o_conn->c_sasl_bind_mech;
 343                         BER_BVZERO( &op->o_conn->c_sasl_bind_mech );
 344                         op->o_conn->c_sasl_bind_in_progress = 0;
 345
 346                         op->o_conn->c_sasl_ssf = op->orb_ssf;
 347                         if( op->orb_ssf > op->o_conn->c_ssf ) {
 348                                 op->o_conn->c_ssf = op->orb_ssf;
 349                         }
 350
 351                         if( op->o_conn->c_dn.bv_len != 0 ) {
 352                                 ber_len_t max = sockbuf_max_incoming_auth;
 353                                 ber_sockbuf_ctrl( op->o_conn->c_sb,
 354                                         LBER_SB_OPT_SET_MAX_INCOMING, &max );
 355                         }
 356
 357                         /* log authorization identity */
 358                         Statslog( LDAP_DEBUG_STATS,
 359                                 "conn=%lu op=%lu BIND dn=\"%s\" mech=%s ssf=%d\n",
 360                                 op->o_connid, op->o_opid,
 361                                 op->o_conn->c_dn.bv_val ? op->o_conn->c_dn.bv_val : "<empty>",
 362                                 op->o_conn->c_authmech.bv_val, op->orb_ssf );
 363
 364 #ifdef NEW_LOGGING
 365                         LDAP_LOG( OPERATION, DETAIL1,
 366                                 "do_bind: SASL/%s bind: dn=\"%s\" ssf=%d\n",
 367                                 op->o_conn->c_authmech.bv_val,
 368                                 op->o_conn->c_dn.bv_val ? op->o_conn->c_dn.bv_val : "<empty>",
 369                                 op->orb_ssf );
 370 #else
 371                         Debug( LDAP_DEBUG_TRACE,
 372                                 "do_bind: SASL/%s bind: dn=\"%s\" ssf=%d\n",
 373                                 op->o_conn->c_authmech.bv_val,
 374                                 op->o_conn->c_dn.bv_val ? op->o_conn->c_dn.bv_val : "<empty>",
 375                                 op->orb_ssf );
 376 #endif
 377
 378                 } else if ( rs->sr_err == LDAP_SASL_BIND_IN_PROGRESS ) {
 379                         op->o_conn->c_sasl_bind_in_progress = 1;
 380
 381                 } else {
 382                         if ( op->o_conn->c_sasl_bind_mech.bv_val ) {
 383                                 free( op->o_conn->c_sasl_bind_mech.bv_val );
 384                                 BER_BVZERO( &op->o_conn->c_sasl_bind_mech );
 385                         }
 386                         op->o_conn->c_sasl_bind_in_progress = 0;
 387                 }
 388
 389 #ifdef LDAP_SLAPI
 390 #define pb      op->o_pb
 391                 /*
 392                  * Normally post-operation plugins are called only after the
 393                  * backend operation. Because the front-end performs SASL
 394                  * binds on behalf of the backend, we'll make a special
 395                  * exception to call the post-operation plugins after a
 396                  * SASL bind.
 397                  */
 398                 if ( pb ) {
 399                         slapi_int_pblock_set_operation( pb, op );
 400                         slapi_pblock_set( pb, SLAPI_BIND_TARGET, (void *)op->o_req_dn.bv_val );
 401                         slapi_pblock_set( pb, SLAPI_BIND_METHOD, (void *)op->orb_method );
 402                         slapi_pblock_set( pb,
 403                                 SLAPI_BIND_CREDENTIALS, (void *)&op->orb_cred );
 404                         slapi_pblock_set( pb, SLAPI_MANAGEDSAIT, (void *)(0) );
 405                         (void) slapi_int_call_plugins( op->o_bd,
 406                                 SLAPI_PLUGIN_POST_BIND_FN, pb );
 407                 }
 408 #endif /* LDAP_SLAPI */
 409
 410                 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 411
 412                 goto cleanup;
 413
 414         } else {
 415                 /* Not SASL, cancel any in-progress bind */
 416                 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
 417
 418                 if ( op->o_conn->c_sasl_bind_mech.bv_val != NULL ) {
 419                         free(op->o_conn->c_sasl_bind_mech.bv_val);
 420                         BER_BVZERO( &op->o_conn->c_sasl_bind_mech );
 421                 }
 422                 op->o_conn->c_sasl_bind_in_progress = 0;
 423
 424                 slap_sasl_reset( op->o_conn );
 425                 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 426         }
 427
 428         if ( op->orb_method == LDAP_AUTH_SIMPLE ) {
 429                 ber_str2bv( "SIMPLE", sizeof("SIMPLE")-1, 0, &mech );
 430                 /* accept "anonymous" binds */
 431                 if ( op->orb_cred.bv_len == 0 || op->o_req_ndn.bv_len == 0 ) {
 432                         rs->sr_err = LDAP_SUCCESS;
 433
 434                         if( op->orb_cred.bv_len &&
 435                                 !( global_allows & SLAP_ALLOW_BIND_ANON_CRED ))
 436                         {
 437                                 /* cred is not empty, disallow */
 438                                 rs->sr_err = LDAP_INVALID_CREDENTIALS;
 439
 440                         } else if ( op->o_req_ndn.bv_len &&
 441                                 !( global_allows & SLAP_ALLOW_BIND_ANON_DN ))
 442                         {
 443                                 /* DN is not empty, disallow */
 444                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
 445                                 rs->sr_text =
 446                                         "unauthenticated bind (DN with no password) disallowed";
 447
 448                         } else if ( global_disallows & SLAP_DISALLOW_BIND_ANON ) {
 449                                 /* disallow */
 450                                 rs->sr_err = LDAP_INAPPROPRIATE_AUTH;
 451                                 rs->sr_text = "anonymous bind disallowed";
 452
 453                         } else {
 454                                 backend_check_restrictions( op, rs, &mech );
 455                         }
 456
 457                         /*
 458                          * we already forced connection to "anonymous",
 459                          * just need to send success
 460                          */
 461                         send_ldap_result( op, rs );
 462 #ifdef NEW_LOGGING
 463                         LDAP_LOG( OPERATION, DETAIL1,
 464                                 "do_bind: conn %d  v%d anonymous bind\n",
 465                                 op->o_connid, op->o_protocol, 0 );
 466 #else
 467                         Debug( LDAP_DEBUG_TRACE, "do_bind: v%d anonymous bind\n",
 468                                 op->o_protocol, 0, 0 );
 469 #endif
 470                         goto cleanup;
 471
 472                 } else if ( global_disallows & SLAP_DISALLOW_BIND_SIMPLE ) {
 473                         /* disallow simple authentication */
 474                         rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
 475                         rs->sr_text = "unwilling to perform simple authentication";
 476
 477                         send_ldap_result( op, rs );
 478 #ifdef NEW_LOGGING
 479                         LDAP_LOG( OPERATION, INFO,
 480                                 "do_bind: conn %d  v%d simple bind(%s) disallowed\n",
 481                                 op->o_connid, op->o_protocol, op->o_req_ndn.bv_val );
 482 #else
 483                         Debug( LDAP_DEBUG_TRACE,
 484                                 "do_bind: v%d simple bind(%s) disallowed\n",
 485                                 op->o_protocol, op->o_req_ndn.bv_val, 0 );
 486 #endif
 487                         goto cleanup;
 488                 }
 489
 490 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND
 491         } else if ( op->orb_method == LDAP_AUTH_KRBV41 ) {
 492                 if ( global_disallows & SLAP_DISALLOW_BIND_KRBV4 ) {
 493                         /* disallow krbv4 authentication */
 494                         rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
 495                         rs->sr_text = "unwilling to perform Kerberos V4 bind";
 496
 497                         send_ldap_result( op, rs );
 498
 499 #ifdef NEW_LOGGING
 500                         LDAP_LOG( OPERATION, DETAIL1,
 501                                 "do_bind: conn %d  v%d Kerberos V4 (step 1) bind refused\n",
 502                                 op->o_connid, op->o_protocol, 0 );
 503 #else
 504                         Debug( LDAP_DEBUG_TRACE,
 505                                 "do_bind: v%d Kerberos V4 (step 1) bind refused\n",
 506                                 op->o_protocol, 0, 0 );
 507 #endif
 508                         goto cleanup;
 509                 }
 510                 ber_str2bv( "KRBV4", sizeof("KRBV4")-1, 0, &mech );
 511
 512         } else if ( op->orb_method == LDAP_AUTH_KRBV42 ) {
 513                 rs->sr_err = LDAP_AUTH_METHOD_NOT_SUPPORTED;
 514                 rs->sr_text = "Kerberos V4 (step 2) bind not supported";
 515                 send_ldap_result( op, rs );
 516
 517 #ifdef NEW_LOGGING
 518                 LDAP_LOG( OPERATION, DETAIL1,
 519                         "do_bind: conn %d  v%d Kerberos V4 (step 2) bind refused\n",
 520                         op->o_connid, op->o_protocol, 0 );
 521 #else
 522                 Debug( LDAP_DEBUG_TRACE,
 523                         "do_bind: v%d Kerberos V4 (step 2) bind refused\n",
 524                         op->o_protocol, 0, 0 );
 525 #endif
 526                 goto cleanup;
 527 #endif
 528
 529         } else {
 530                 rs->sr_err = LDAP_AUTH_METHOD_NOT_SUPPORTED;
 531                 rs->sr_text = "unknown authentication method";
 532
 533                 send_ldap_result( op, rs );
 534 #ifdef NEW_LOGGING
 535                 LDAP_LOG( OPERATION, INFO,
 536                         "do_bind: conn %ld  v%d unknown authentication method (%ld)\n",
 537                         op->o_connid, op->o_protocol, op->orb_method );
 538 #else
 539                 Debug( LDAP_DEBUG_TRACE,
 540                         "do_bind: v%d unknown authentication method (%ld)\n",
 541                         op->o_protocol, op->orb_method, 0 );
 542 #endif
 543                 goto cleanup;
 544         }
 545
 546         /*
 547          * We could be serving multiple database backends.  Select the
 548          * appropriate one, or send a referral to our "referral server"
 549          * if we don't hold it.
 550          */
 551
 552         if ( (op->o_bd = select_backend( &op->o_req_ndn, 0, 0 )) == NULL ) {
 553                 if ( default_referral ) {
 554                         rs->sr_ref = referral_rewrite( default_referral,
 555                                 NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 556                         if (!rs->sr_ref) rs->sr_ref = default_referral;
 557
 558                         rs->sr_err = LDAP_REFERRAL;
 559                         send_ldap_result( op, rs );
 560
 561                         if (rs->sr_ref != default_referral) ber_bvarray_free( rs->sr_ref );
 562
 563                 } else {
 564                         /* noSuchObject is not allowed to be returned by bind */
 565                         rs->sr_err = LDAP_INVALID_CREDENTIALS;
 566                         send_ldap_result( op, rs );
 567                 }
 568
 569                 goto cleanup;
 570         }
 571
 572         /* check restrictions */
 573         if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
 574                 send_ldap_result( op, rs );
 575                 goto cleanup;
 576         }
 577
 578 #ifdef LDAP_SLAPI
 579         if ( pb ) {
 580                 int rc;
 581                 slapi_int_pblock_set_operation( pb, op );
 582                 slapi_pblock_set( pb, SLAPI_BIND_TARGET, (void *)op->o_req_dn.bv_val );
 583                 slapi_pblock_set( pb, SLAPI_BIND_METHOD, (void *)op->orb_method );
 584                 slapi_pblock_set( pb, SLAPI_BIND_CREDENTIALS, (void *)&op->orb_cred );
 585                 slapi_pblock_set( pb, SLAPI_MANAGEDSAIT, (void *)(0) );
 586                 slapi_pblock_set( pb, SLAPI_CONN_DN, (void *)(0) );
 587
 588                 rc = slapi_int_call_plugins( op->o_bd, SLAPI_PLUGIN_PRE_BIND_FN, pb );
 589
 590 #ifdef NEW_LOGGING
 591                 LDAP_LOG( OPERATION, INFO,
 592                         "do_bind: Bind preoperation plugin returned %d\n",
 593                         rs->sr_err, 0, 0);
 594 #else
 595                 Debug(LDAP_DEBUG_TRACE,
 596                         "do_bind: Bind preoperation plugin returned %d.\n",
 597                         rs->sr_err, 0, 0);
 598 #endif
 599
 600                 switch ( rc ) {
 601                 case SLAPI_BIND_SUCCESS:
 602                         /* Continue with backend processing */
 603                         break;
 604                 case SLAPI_BIND_FAIL:
 605                         /* Failure, server sends result */
 606                         rs->sr_err = LDAP_INVALID_CREDENTIALS;
 607                         send_ldap_result( op, rs );
 608                         goto cleanup;
 609                         break;
 610                 case SLAPI_BIND_ANONYMOUS:
 611                         /* SLAPI_BIND_ANONYMOUS is undocumented XXX */
 612                 default:
 613                         /* Authoritative, plugin sent result, or no plugins called. */
 614                         if ( slapi_pblock_get( op->o_pb, SLAPI_RESULT_CODE,
 615                                 (void *)&rs->sr_err) != 0 )
 616                         {
 617                                 rs->sr_err = LDAP_OTHER;
 618                         }
 619
 620                         BER_BVZERO( &op->orb_edn );
 621
 622                         if ( rs->sr_err == LDAP_SUCCESS ) {
 623                                 slapi_pblock_get( pb, SLAPI_CONN_DN,
 624                                         (void *)&op->orb_edn.bv_val );
 625                                 if ( BER_BVISNULL( &op->orb_edn ) ) {
 626                                         if ( rc == 1 ) {
 627                                                 /* No plugins were called; continue. */
 628                                                 break;
 629                                         }
 630                                 } else {
 631                                         op->orb_edn.bv_len = strlen( op->orb_edn.bv_val );
 632                                 }
 633                                 rs->sr_err = dnPrettyNormal( NULL, &op->orb_edn,
 634                                         &op->o_req_dn, &op->o_req_ndn, op->o_tmpmemctx );
 635                                 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
 636                                 ber_dupbv(&op->o_conn->c_dn, &op->o_req_dn);
 637                                 ber_dupbv(&op->o_conn->c_ndn, &op->o_req_ndn);
 638                                 op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx );
 639                                 BER_BVZERO( &op->o_req_dn );
 640                                 op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
 641                                 BER_BVZERO( &op->o_req_ndn );
 642                                 if ( op->o_conn->c_dn.bv_len != 0 ) {
 643                                         ber_len_t max = sockbuf_max_incoming_auth;
 644                                         ber_sockbuf_ctrl( op->o_conn->c_sb,
 645                                                 LBER_SB_OPT_SET_MAX_INCOMING, &max );
 646                                 }
 647                                 /* log authorization identity */
 648                                 Statslog( LDAP_DEBUG_STATS,
 649                                         "conn=%lu op=%lu BIND dn=\"%s\" mech=%s (SLAPI) ssf=0\n",
 650                                         op->o_connid, op->o_opid,
 651                                         op->o_conn->c_dn.bv_val
 652                                                 ? op->o_conn->c_dn.bv_val : "<empty>",
 653                                         mech.bv_val, 0 );
 654                                 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 655                         }
 656                         goto cleanup;
 657                         break;
 658                 }
 659         }
 660 #endif /* LDAP_SLAPI */
 661
 662         if( op->o_bd->be_bind ) {
 663                 rs->sr_err = (op->o_bd->be_bind)( op, rs );
 664
 665                 if ( rs->sr_err == 0 ) {
 666                         ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
 667
 668                         if( op->o_conn->c_authz_backend == NULL ) {
 669                                 op->o_conn->c_authz_backend = op->o_bd;
 670                         }
 671
 672                         /* be_bind returns regular/global edn */
 673                         if( op->orb_edn.bv_len ) {
 674                                 op->o_conn->c_dn = op->orb_edn;
 675                         } else {
 676                                 ber_dupbv(&op->o_conn->c_dn, &op->o_req_dn);
 677                         }
 678
 679                         ber_dupbv( &op->o_conn->c_ndn, &op->o_req_ndn );
 680
 681                         if( op->o_conn->c_dn.bv_len != 0 ) {
 682                                 ber_len_t max = sockbuf_max_incoming_auth;
 683                                 ber_sockbuf_ctrl( op->o_conn->c_sb,
 684                                         LBER_SB_OPT_SET_MAX_INCOMING, &max );
 685                         }
 686
 687                         /* log authorization identity */
 688                         Statslog( LDAP_DEBUG_STATS,
 689                                 "conn=%lu op=%lu BIND dn=\"%s\" mech=%s ssf=0\n",
 690                                 op->o_connid, op->o_opid,
 691                                 op->o_conn->c_dn.bv_val, mech.bv_val, 0 );
 692
 693 #ifdef NEW_LOGGING
 694                         LDAP_LOG( OPERATION, DETAIL1,
 695                                 "do_bind: v%d bind: \"%s\" to \"%s\" \n",
 696                                 op->o_protocol, op->o_conn->c_dn.bv_val, op->o_conn->c_dn.bv_val );
 697 #else
 698                         Debug( LDAP_DEBUG_TRACE,
 699                                 "do_bind: v%d bind: \"%s\" to \"%s\"\n",
 700                                 op->o_protocol, op->o_req_dn.bv_val, op->o_conn->c_dn.bv_val );
 701 #endif
 702
 703                         ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 704
 705                         /* send this here to avoid a race condition */
 706                         send_ldap_result( op, rs );
 707
 708                 } else if (op->orb_edn.bv_val != NULL) {
 709                         free( op->orb_edn.bv_val );
 710                 }
 711
 712         } else {
 713                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 714                         "operation not supported within naming context" );
 715         }
 716
 717 #ifdef LDAP_SLAPI
 718         if ( pb != NULL &&
 719                 slapi_int_call_plugins( op->o_bd, SLAPI_PLUGIN_POST_BIND_FN, pb ) < 0 )
 720         {
 721 #ifdef NEW_LOGGING
 722                 LDAP_LOG( OPERATION, INFO,
 723                         "do_bind: Bind postoperation plugins failed\n",
 724                         0, 0, 0);
 725 #else
 726                 Debug(LDAP_DEBUG_TRACE,
 727                         "do_bind: Bind postoperation plugins failed.\n",
 728                         0, 0, 0);
 729 #endif
 730         }
 731 #endif /* LDAP_SLAPI */
 732
 733 cleanup:;
 734         return rs->sr_err;
 735 }
 736