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         struct berval mech = { 0, NULL };
  50         struct berval dn = { 0, NULL };
  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, &op->orb_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 = -1;
 120                 goto cleanup;
 121         }
 122
 123         op->o_protocol = version;
 124
 125         if( op->orb_method != LDAP_AUTH_SASL ) {
 126                 tag = ber_scanf( ber, /*{*/ "m}", &op->orb_cred );
 127
 128         } else {
 129                 tag = ber_scanf( ber, "{m" /*}*/, &mech );
 130
 131                 if ( tag != LBER_ERROR ) {
 132                         ber_len_t len;
 133                         tag = ber_peek_tag( ber, &len );
 134
 135                         if ( tag == LDAP_TAG_LDAPCRED ) {
 136                                 tag = ber_scanf( ber, "m", &op->orb_cred );
 137                         } else {
 138                                 tag = LDAP_TAG_LDAPCRED;
 139                                 op->orb_cred.bv_val = NULL;
 140                                 op->orb_cred.bv_len = 0;
 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         /* check for inappropriate controls */
 241         if( get_manageDSAit( op ) == SLAP_CRITICAL_CONTROL ) {
 242                 send_ldap_error( op, rs,
 243                         LDAP_UNAVAILABLE_CRITICAL_EXTENSION,
 244                         "manageDSAit control inappropriate" );
 245                 goto cleanup;
 246         }
 247
 248         /* Set the bindop for the benefit of in-directory SASL lookups */
 249         op->o_conn->c_sasl_bindop = op;
 250
 251         if ( op->orb_method == LDAP_AUTH_SASL ) {
 252                 if ( version < LDAP_VERSION3 ) {
 253 #ifdef NEW_LOGGING
 254                         LDAP_LOG( OPERATION, INFO,
 255                                 "do_bind: conn %d  sasl with LDAPv%ld\n",
 256                                 op->o_connid, (unsigned long)version , 0 );
 257 #else
 258                         Debug( LDAP_DEBUG_ANY, "do_bind: sasl with LDAPv%ld\n",
 259                                 (unsigned long) version, 0, 0 );
 260 #endif
 261                         send_ldap_discon( op, rs,
 262                                 LDAP_PROTOCOL_ERROR, "SASL bind requires LDAPv3" );
 263                         rs->sr_err = SLAPD_DISCONNECT;
 264                         goto cleanup;
 265                 }
 266
 267                 if( mech.bv_len == 0 ) {
 268 #ifdef NEW_LOGGING
 269                         LDAP_LOG( OPERATION, INFO,
 270                                    "do_bind: conn %d  no SASL mechanism provided\n",
 271                                    op->o_connid, 0, 0 );
 272 #else
 273                         Debug( LDAP_DEBUG_ANY,
 274                                 "do_bind: no sasl mechanism provided\n",
 275                                 0, 0, 0 );
 276 #endif
 277                         send_ldap_error( op, rs, LDAP_AUTH_METHOD_NOT_SUPPORTED,
 278                                 "no SASL mechanism provided" );
 279                         goto cleanup;
 280                 }
 281
 282                 /* check restrictions */
 283                 if( backend_check_restrictions( op, rs, &mech ) != LDAP_SUCCESS ) {
 284                         send_ldap_result( op, rs );
 285                         goto cleanup;
 286                 }
 287
 288                 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
 289                 if ( op->o_conn->c_sasl_bind_in_progress ) {
 290                         if( !bvmatch( &op->o_conn->c_sasl_bind_mech, &mech ) ) {
 291                                 /* mechanism changed between bind steps */
 292                                 slap_sasl_reset(op->o_conn);
 293                         }
 294                 } else {
 295                         ber_dupbv(&op->o_conn->c_sasl_bind_mech, &mech);
 296                 }
 297                 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 298
 299                 rs->sr_err = slap_sasl_bind( op, rs );
 300
 301                 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
 302                 if( rs->sr_err == LDAP_SUCCESS ) {
 303                         ber_dupbv(&op->o_conn->c_dn, &op->orb_edn);
 304                         if( op->orb_edn.bv_len != 0 ) {
 305                                 /* edn is always normalized already */
 306                                 ber_dupbv( &op->o_conn->c_ndn, &op->o_conn->c_dn );
 307                         }
 308                         op->o_tmpfree( op->orb_edn.bv_val, op->o_tmpmemctx );
 309                         op->orb_edn.bv_val = NULL;
 310                         op->orb_edn.bv_len = 0;
 311                         op->o_conn->c_authmech = op->o_conn->c_sasl_bind_mech;
 312                         op->o_conn->c_sasl_bind_mech.bv_val = NULL;
 313                         op->o_conn->c_sasl_bind_mech.bv_len = 0;
 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                 op->orb_method == LDAP_AUTH_KRBV42 )
 463         {
 464                 if ( global_disallows & SLAP_DISALLOW_BIND_KRBV4 ) {
 465                         /* disallow simple authentication */
 466                         rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
 467                         rs->sr_text = "unwilling to perform Kerberos V4 bind";
 468
 469                         send_ldap_result( op, rs );
 470 #ifdef NEW_LOGGING
 471                         LDAP_LOG( OPERATION, DETAIL1,
 472                                 "do_bind: conn %d  v%d Kerberos V4 bind\n",
 473                                 op->o_connid, version , 0 );
 474 #else
 475                         Debug( LDAP_DEBUG_TRACE, "do_bind: v%d Kerberos V4 bind\n",
 476                                 version, 0, 0 );
 477 #endif
 478                         goto cleanup;
 479                 }
 480                 ber_str2bv( "KRBV4", sizeof("KRBV4")-1, 0, &mech );
 481 #endif
 482
 483         } else {
 484                 rs->sr_err = LDAP_AUTH_METHOD_NOT_SUPPORTED;
 485                 rs->sr_text = "unknown authentication method";
 486
 487                 send_ldap_result( op, rs );
 488 #ifdef NEW_LOGGING
 489                 LDAP_LOG( OPERATION, INFO,
 490                         "do_bind: conn %ld  v%d unknown authentication method (%ld)\n",
 491                         op->o_connid, version, op->orb_method );
 492 #else
 493                 Debug( LDAP_DEBUG_TRACE,
 494                         "do_bind: v%d unknown authentication method (%ld)\n",
 495                         version, op->orb_method, 0 );
 496 #endif
 497                 goto cleanup;
 498         }
 499
 500         /*
 501          * We could be serving multiple database backends.  Select the
 502          * appropriate one, or send a referral to our "referral server"
 503          * if we don't hold it.
 504          */
 505
 506         if ( (op->o_bd = select_backend( &op->o_req_ndn, 0, 0 )) == NULL ) {
 507                 if ( default_referral ) {
 508                         rs->sr_ref = referral_rewrite( default_referral,
 509                                 NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 510                         if (!rs->sr_ref) rs->sr_ref = default_referral;
 511
 512                         rs->sr_err = LDAP_REFERRAL;
 513                         send_ldap_result( op, rs );
 514
 515                         if (rs->sr_ref != default_referral) ber_bvarray_free( rs->sr_ref );
 516
 517                 } else {
 518                         /* noSuchObject is not allowed to be returned by bind */
 519                         rs->sr_err = LDAP_INVALID_CREDENTIALS;
 520                         send_ldap_result( op, rs );
 521                 }
 522
 523                 goto cleanup;
 524         }
 525
 526         /* check restrictions */
 527         if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
 528                 send_ldap_result( op, rs );
 529                 goto cleanup;
 530         }
 531
 532 #if defined( LDAP_SLAPI )
 533         if ( pb ) {
 534                 int rc;
 535                 slapi_int_pblock_set_operation( pb, op );
 536                 slapi_pblock_set( pb, SLAPI_BIND_TARGET, (void *)dn.bv_val );
 537                 slapi_pblock_set( pb, SLAPI_BIND_METHOD, (void *)op->orb_method );
 538                 slapi_pblock_set( pb, SLAPI_BIND_CREDENTIALS, (void *)&op->orb_cred );
 539                 slapi_pblock_set( pb, SLAPI_MANAGEDSAIT, (void *)(0) );
 540                 slapi_pblock_set( pb, SLAPI_CONN_DN, (void *)(0) );
 541
 542                 rc = slapi_int_call_plugins( op->o_bd, SLAPI_PLUGIN_PRE_BIND_FN, pb );
 543
 544 #ifdef NEW_LOGGING
 545                 LDAP_LOG( OPERATION, INFO,
 546                         "do_bind: Bind preoperation plugin returned %d\n",
 547                         rs->sr_err, 0, 0);
 548 #else
 549                 Debug(LDAP_DEBUG_TRACE,
 550                         "do_bind: Bind preoperation plugin returned %d.\n",
 551                         rs->sr_err, 0, 0);
 552 #endif
 553
 554                 switch ( rc ) {
 555                 case SLAPI_BIND_SUCCESS:
 556                         /* Continue with backend processing */
 557                         break;
 558                 case SLAPI_BIND_FAIL:
 559                         /* Failure, server sends result */
 560                         rs->sr_err = LDAP_INVALID_CREDENTIALS;
 561                         send_ldap_result( op, rs );
 562                         goto cleanup;
 563                         break;
 564                 case SLAPI_BIND_ANONYMOUS:
 565                         /* SLAPI_BIND_ANONYMOUS is undocumented XXX */
 566                 default:
 567                         /* Authoritative, plugin sent result, or no plugins called. */
 568                         if ( slapi_pblock_get( op->o_pb, SLAPI_RESULT_CODE,
 569                                 (void *)&rs->sr_err) != 0 )
 570                         {
 571                                 rs->sr_err = LDAP_OTHER;
 572                         }
 573
 574                         op->orb_edn.bv_val = NULL;
 575                         op->orb_edn.bv_len = 0;
 576
 577                         if ( rs->sr_err == LDAP_SUCCESS ) {
 578                                 slapi_pblock_get( pb, SLAPI_CONN_DN, (void *)&op->orb_edn.bv_val );
 579                                 if ( op->orb_edn.bv_val == NULL ) {
 580                                         if ( rc == 1 ) {
 581                                                 /* No plugins were called; continue. */
 582                                                 break;
 583                                         }
 584                                 } else {
 585                                         op->orb_edn.bv_len = strlen( op->orb_edn.bv_val );
 586                                 }
 587                                 rs->sr_err = dnPrettyNormal( NULL, &op->orb_edn,
 588                                         &op->o_req_dn, &op->o_req_ndn, op->o_tmpmemctx );
 589                                 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
 590                                 ber_dupbv(&op->o_conn->c_dn, &op->o_req_dn);
 591                                 ber_dupbv(&op->o_conn->c_ndn, &op->o_req_ndn);
 592                                 op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx );
 593                                 op->o_req_dn.bv_val = NULL;
 594                                 op->o_req_dn.bv_len = 0;
 595                                 op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
 596                                 op->o_req_ndn.bv_val = NULL;
 597                                 op->o_req_ndn.bv_len = 0;
 598                                 if ( op->o_conn->c_dn.bv_len != 0 ) {
 599                                         ber_len_t max = sockbuf_max_incoming_auth;
 600                                         ber_sockbuf_ctrl( op->o_conn->c_sb,
 601                                                 LBER_SB_OPT_SET_MAX_INCOMING, &max );
 602                                 }
 603                                 /* log authorization identity */
 604                                 Statslog( LDAP_DEBUG_STATS,
 605                                         "conn=%lu op=%lu BIND dn=\"%s\" mech=%s (SLAPI) ssf=0\n",
 606                                         op->o_connid, op->o_opid,
 607                                         op->o_conn->c_dn.bv_val ? op->o_conn->c_dn.bv_val : "<empty>",
 608                                         mech.bv_val, 0 );
 609                                 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 610                         }
 611                         goto cleanup;
 612                         break;
 613                 }
 614         }
 615 #endif /* defined( LDAP_SLAPI ) */
 616
 617         if( op->o_bd->be_bind ) {
 618                 rs->sr_err = (op->o_bd->be_bind)( op, rs );
 619
 620                 if ( rs->sr_err == 0 ) {
 621                         ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
 622
 623                         if( op->o_conn->c_authz_backend == NULL ) {
 624                                 op->o_conn->c_authz_backend = op->o_bd;
 625                         }
 626
 627                         /* be_bind returns regular/global edn */
 628                         if( op->orb_edn.bv_len ) {
 629                                 op->o_conn->c_dn = op->orb_edn;
 630                         } else {
 631                                 ber_dupbv(&op->o_conn->c_dn, &op->o_req_dn);
 632                         }
 633
 634                         ber_dupbv( &op->o_conn->c_ndn, &op->o_req_ndn );
 635
 636                         if( op->o_conn->c_dn.bv_len != 0 ) {
 637                                 ber_len_t max = sockbuf_max_incoming_auth;
 638                                 ber_sockbuf_ctrl( op->o_conn->c_sb,
 639                                         LBER_SB_OPT_SET_MAX_INCOMING, &max );
 640                         }
 641
 642                         /* log authorization identity */
 643                         Statslog( LDAP_DEBUG_STATS,
 644                                 "conn=%lu op=%lu BIND dn=\"%s\" mech=%s ssf=0\n",
 645                                 op->o_connid, op->o_opid,
 646                                 op->o_conn->c_dn.bv_val, mech.bv_val, 0 );
 647
 648 #ifdef NEW_LOGGING
 649                         LDAP_LOG( OPERATION, DETAIL1,
 650                                 "do_bind: v%d bind: \"%s\" to \"%s\" \n",
 651                                 version, op->o_conn->c_dn.bv_val, op->o_conn->c_dn.bv_val );
 652 #else
 653                         Debug( LDAP_DEBUG_TRACE,
 654                                 "do_bind: v%d bind: \"%s\" to \"%s\"\n",
 655                                 version, dn.bv_val, op->o_conn->c_dn.bv_val );
 656 #endif
 657
 658                         ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 659
 660                         /* send this here to avoid a race condition */
 661                         send_ldap_result( op, rs );
 662
 663                 } else if (op->orb_edn.bv_val != NULL) {
 664                         free( op->orb_edn.bv_val );
 665                 }
 666
 667         } else {
 668                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 669                         "operation not supported within naming context" );
 670         }
 671
 672 #if defined( LDAP_SLAPI )
 673         if ( pb != NULL && slapi_int_call_plugins( op->o_bd, SLAPI_PLUGIN_POST_BIND_FN, pb ) < 0 ) {
 674 #ifdef NEW_LOGGING
 675                 LDAP_LOG( OPERATION, INFO,
 676                         "do_bind: Bind postoperation plugins failed\n",
 677                         0, 0, 0);
 678 #else
 679                 Debug(LDAP_DEBUG_TRACE,
 680                         "do_bind: Bind postoperation plugins failed.\n",
 681                         0, 0, 0);
 682 #endif
 683         }
 684 #endif /* defined( LDAP_SLAPI ) */
 685
 686 cleanup:
 687         if ( rs->sr_err == LDAP_SUCCESS ) {
 688                 if ( op->orb_method != LDAP_AUTH_SASL ) {
 689                         ber_dupbv( &op->o_conn->c_authmech, &mech );
 690                 }
 691                 op->o_conn->c_authtype = op->orb_method;
 692         }
 693
 694         op->o_conn->c_sasl_bindop = NULL;
 695
 696         if( op->o_req_dn.bv_val != NULL ) {
 697                 sl_free( op->o_req_dn.bv_val, op->o_tmpmemctx );
 698                 op->o_req_dn.bv_val = NULL;
 699         }
 700         if( op->o_req_ndn.bv_val != NULL ) {
 701                 sl_free( op->o_req_ndn.bv_val, op->o_tmpmemctx );
 702                 op->o_req_ndn.bv_val = NULL;
 703         }
 704
 705         return rs->sr_err;
 706 }