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

   1 /* $OpenLDAP$ */
   2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   3  *
   4  * Copyright 1999-2007 The OpenLDAP Foundation.
   5  * Portions Copyright 2001-2003 Pierangelo Masarati.
   6  * Portions Copyright 1999-2003 Howard Chu.
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted only as authorized by the OpenLDAP
  11  * Public License.
  12  *
  13  * A copy of this license is available in the file LICENSE in the
  14  * top-level directory of the distribution or, alternatively, at
  15  * <http://www.OpenLDAP.org/license.html>.
  16  */
  17 /* ACKNOWLEDGEMENTS:
  18  * This work was initially developed by the Howard Chu for inclusion
  19  * in OpenLDAP Software and subsequently enhanced by Pierangelo
  20  * Masarati.
  21  */
  22
  23 #include "portable.h"
  24
  25 #include <stdio.h>
  26
  27 #include <ac/errno.h>
  28 #include <ac/socket.h>
  29 #include <ac/string.h>
  30
  31
  32 #define AVL_INTERNAL
  33 #include "slap.h"
  34 #include "../back-ldap/back-ldap.h"
  35 #include "back-meta.h"
  36 #undef ldap_debug       /* silence a warning in ldap-int.h */
  37 #include "../../../libraries/libldap/ldap-int.h"
  38
  39 #include "lutil_ldap.h"
  40
  41 static int
  42 meta_back_proxy_authz_bind(
  43         metaconn_t              *mc,
  44         int                     candidate,
  45         Operation               *op,
  46         SlapReply               *rs,
  47         ldap_back_send_t        sendok );
  48
  49 static int
  50 meta_back_single_bind(
  51         Operation               *op,
  52         SlapReply               *rs,
  53         metaconn_t              *mc,
  54         int                     candidate );
  55
  56 int
  57 meta_back_bind( Operation *op, SlapReply *rs )
  58 {
  59         metainfo_t      *mi = ( metainfo_t * )op->o_bd->be_private;
  60         metaconn_t      *mc = NULL;
  61
  62         int             rc = LDAP_OTHER,
  63                         i,
  64                         gotit = 0,
  65                         isroot = 0;
  66
  67         SlapReply       *candidates = meta_back_candidates_get( op );
  68
  69         rs->sr_err = LDAP_SUCCESS;
  70
  71         Debug( LDAP_DEBUG_ARGS, "%s meta_back_bind: dn=\"%s\".\n",
  72                 op->o_log_prefix, op->o_req_dn.bv_val, 0 );
  73
  74         /* the test on the bind method should be superfluous */
  75         if ( op->orb_method == LDAP_AUTH_SIMPLE
  76                 && be_isroot_dn( op->o_bd, &op->o_req_ndn ) )
  77         {
  78                 if ( !be_isroot_pw( op ) ) {
  79                         rs->sr_err = LDAP_INVALID_CREDENTIALS;
  80                         rs->sr_text = NULL;
  81                         send_ldap_result( op, rs );
  82                         return rs->sr_err;
  83                 }
  84
  85                 if ( META_BACK_DEFER_ROOTDN_BIND( mi ) ) {
  86                         rs->sr_err = LDAP_SUCCESS;
  87                         rs->sr_text = NULL;
  88                         /* frontend will return success */
  89                         return rs->sr_err;
  90                 }
  91
  92                 isroot = 1;
  93         }
  94
  95         /* we need meta_back_getconn() not send result even on error,
  96          * because we want to intercept the error and make it
  97          * invalidCredentials */
  98         mc = meta_back_getconn( op, rs, NULL, LDAP_BACK_BIND_DONTSEND );
  99         if ( !mc ) {
 100                 if ( StatslogTest( LDAP_DEBUG_ANY ) ) {
 101                         char    buf[ SLAP_TEXT_BUFLEN ];
 102
 103                         snprintf( buf, sizeof( buf ),
 104                                 "meta_back_bind: no target "
 105                                 "for dn \"%s\" (%d%s%s).",
 106                                 op->o_req_dn.bv_val, rs->sr_err,
 107                                 rs->sr_text ? ". " : "",
 108                                 rs->sr_text ? rs->sr_text : "" );
 109                         Debug( LDAP_DEBUG_ANY,
 110                                 "%s %s\n",
 111                                 op->o_log_prefix, buf, 0 );
 112                 }
 113
 114                 /* FIXME: there might be cases where we don't want
 115                  * to map the error onto invalidCredentials */
 116                 switch ( rs->sr_err ) {
 117                 case LDAP_NO_SUCH_OBJECT:
 118                 case LDAP_UNWILLING_TO_PERFORM:
 119                         rs->sr_err = LDAP_INVALID_CREDENTIALS;
 120                         rs->sr_text = NULL;
 121                         break;
 122                 }
 123                 send_ldap_result( op, rs );
 124                 return rs->sr_err;
 125         }
 126
 127         /*
 128          * Each target is scanned ...
 129          */
 130         mc->mc_authz_target = META_BOUND_NONE;
 131         for ( i = 0; i < mi->mi_ntargets; i++ ) {
 132                 metatarget_t    *mt = mi->mi_targets[ i ];
 133                 int             lerr;
 134
 135                 /*
 136                  * Skip non-candidates
 137                  */
 138                 if ( !META_IS_CANDIDATE( &candidates[ i ] ) ) {
 139                         continue;
 140                 }
 141
 142                 if ( gotit == 0 ) {
 143                         /* set rc to LDAP_SUCCESS only if at least
 144                          * one candidate has been tried */
 145                         rc = LDAP_SUCCESS;
 146                         gotit = 1;
 147
 148                 } else if ( isroot == 0 ) {
 149                         /*
 150                          * A bind operation is expected to have
 151                          * ONE CANDIDATE ONLY!
 152                          */
 153                         Debug( LDAP_DEBUG_ANY,
 154                                 "### %s meta_back_bind: more than one"
 155                                 " candidate selected...\n",
 156                                 op->o_log_prefix, 0, 0 );
 157                 }
 158
 159                 if ( isroot ) {
 160                         if ( mt->mt_idassert_authmethod == LDAP_AUTH_NONE
 161                                 || BER_BVISNULL( &mt->mt_idassert_authcDN ) )
 162                         {
 163                                 metasingleconn_t        *msc = &mc->mc_conns[ i ];
 164
 165                                 /* skip the target if no pseudorootdn is provided */
 166                                 if ( !BER_BVISNULL( &msc->msc_bound_ndn ) ) {
 167                                         ch_free( msc->msc_bound_ndn.bv_val );
 168                                         BER_BVZERO( &msc->msc_bound_ndn );
 169                                 }
 170
 171                                 if ( !BER_BVISNULL( &msc->msc_cred ) ) {
 172                                         /* destroy sensitive data */
 173                                         memset( msc->msc_cred.bv_val, 0,
 174                                                 msc->msc_cred.bv_len );
 175                                         ch_free( msc->msc_cred.bv_val );
 176                                         BER_BVZERO( &msc->msc_cred );
 177                                 }
 178
 179                                 continue;
 180                         }
 181
 182
 183                         (void)meta_back_proxy_authz_bind( mc, i, op, rs, LDAP_BACK_DONTSEND );
 184                         lerr = rs->sr_err;
 185
 186                 } else {
 187                         lerr = meta_back_single_bind( op, rs, mc, i );
 188                 }
 189
 190                 if ( lerr != LDAP_SUCCESS ) {
 191                         rc = rs->sr_err = lerr;
 192                         /* FIXME: in some cases (e.g. unavailable)
 193                          * do not assume it's not candidate; rather
 194                          * mark this as an error to be eventually
 195                          * reported to client */
 196                         META_CANDIDATE_CLEAR( &candidates[ i ] );
 197                         break;
 198                 }
 199         }
 200
 201         /* must re-insert if local DN changed as result of bind */
 202         if ( rc == LDAP_SUCCESS ) {
 203                 if ( isroot ) {
 204                         mc->mc_authz_target = META_BOUND_ALL;
 205                         ber_dupbv( &op->orb_edn, be_root_dn( op->o_bd ) );
 206                 }
 207
 208                 if ( !LDAP_BACK_PCONN_ISPRIV( mc )
 209                         && !dn_match( &op->o_req_ndn, &mc->mc_local_ndn ) )
 210                 {
 211                         metaconn_t      *tmpmc;
 212                         int             lerr;
 213
 214                         /* wait for all other ops to release the connection */
 215 retry_lock:;
 216                         ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
 217                         if ( mc->mc_refcnt > 1 ) {
 218                                 ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
 219                                 ldap_pvt_thread_yield();
 220                                 goto retry_lock;
 221                         }
 222
 223                         assert( mc->mc_refcnt == 1 );
 224 #if META_BACK_PRINT_CONNTREE > 0
 225                         meta_back_print_conntree( mi, ">>> meta_back_bind" );
 226 #endif /* META_BACK_PRINT_CONNTREE */
 227                         tmpmc = avl_delete( &mi->mi_conninfo.lai_tree, (caddr_t)mc,
 228                                 meta_back_conndn_cmp );
 229                         assert( tmpmc == mc );
 230
 231                         /* delete all cached connections with the current connection */
 232                         if ( LDAP_BACK_SINGLECONN( mi ) ) {
 233                                 while ( ( tmpmc = avl_delete( &mi->mi_conninfo.lai_tree, (caddr_t)mc, meta_back_conn_cmp ) ) != NULL )
 234                                 {
 235                                         Debug( LDAP_DEBUG_TRACE,
 236                                                 "=>meta_back_bind: destroying conn %ld (refcnt=%u)\n",
 237                                                 LDAP_BACK_PCONN_ID( mc ), mc->mc_refcnt, 0 );
 238
 239                                         if ( tmpmc->mc_refcnt != 0 ) {
 240                                                 /* taint it */
 241                                                 LDAP_BACK_CONN_TAINTED_SET( tmpmc );
 242
 243                                         } else {
 244                                                 /*
 245                                                  * Needs a test because the handler may be corrupted,
 246                                                  * and calling ldap_unbind on a corrupted header results
 247                                                  * in a segmentation fault
 248                                                  */
 249                                                 meta_back_conn_free( tmpmc );
 250                                         }
 251                                 }
 252                         }
 253
 254                         ber_bvreplace( &mc->mc_local_ndn, &op->o_req_ndn );
 255                         if ( isroot ) {
 256                                 LDAP_BACK_CONN_ISPRIV_SET( mc );
 257                                 LDAP_BACK_PCONN_SET( mc, op );
 258                         }
 259                         lerr = avl_insert( &mi->mi_conninfo.lai_tree, (caddr_t)mc,
 260                                 meta_back_conndn_cmp, meta_back_conndn_dup );
 261 #if META_BACK_PRINT_CONNTREE > 0
 262                         meta_back_print_conntree( mi, "<<< meta_back_bind" );
 263 #endif /* META_BACK_PRINT_CONNTREE */
 264                         ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
 265                         if ( lerr == -1 ) {
 266                                 /* we can do this because mc_refcnt == 1 */
 267                                 assert( mc->mc_refcnt == 1 );
 268                                 mc->mc_refcnt = 0;
 269                                 meta_back_conn_free( mc );
 270                                 mc = NULL;
 271                         }
 272                 }
 273         }
 274
 275         if ( mc != NULL ) {
 276                 meta_back_release_conn( mi, mc );
 277         }
 278
 279         /*
 280          * rc is LDAP_SUCCESS if at least one bind succeeded,
 281          * err is the last error that occurred during a bind;
 282          * if at least (and at most?) one bind succeeds, fine.
 283          */
 284         if ( rc != LDAP_SUCCESS ) {
 285
 286                 /*
 287                  * deal with bind failure ...
 288                  */
 289
 290                 /*
 291                  * no target was found within the naming context,
 292                  * so bind must fail with invalid credentials
 293                  */
 294                 if ( rs->sr_err == LDAP_SUCCESS && gotit == 0 ) {
 295                         rs->sr_err = LDAP_INVALID_CREDENTIALS;
 296                 } else {
 297                         rs->sr_err = slap_map_api2result( rs );
 298                 }
 299                 send_ldap_result( op, rs );
 300                 return rs->sr_err;
 301
 302         }
 303
 304         return LDAP_SUCCESS;
 305 }
 306
 307 static int
 308 meta_back_bind_op_result(
 309         Operation               *op,
 310         SlapReply               *rs,
 311         metaconn_t              *mc,
 312         int                     candidate,
 313         int                     msgid,
 314         ldap_back_send_t        sendok )
 315 {
 316         metainfo_t              *mi = ( metainfo_t * )op->o_bd->be_private;
 317         metatarget_t            *mt = mi->mi_targets[ candidate ];
 318         metasingleconn_t        *msc = &mc->mc_conns[ candidate ];
 319         LDAPMessage             *res;
 320         struct timeval          tv;
 321         int                     rc;
 322         int                     nretries = mt->mt_nretries;
 323         char                    buf[ SLAP_TEXT_BUFLEN ];
 324
 325         Debug( LDAP_DEBUG_TRACE,
 326                 ">>> %s meta_back_bind_op_result[%d]\n",
 327                 op->o_log_prefix, candidate, 0 );
 328
 329         if ( rs->sr_err == LDAP_SUCCESS ) {
 330                 time_t          stoptime = (time_t)(-1),
 331                                 timeout;
 332                 int             timeout_err = op->o_protocol >= LDAP_VERSION3 ?
 333                                 LDAP_ADMINLIMIT_EXCEEDED : LDAP_OTHER;
 334                 const char      *timeout_text = "Operation timed out";
 335                 slap_op_t       opidx = slap_req2op( op->o_tag );
 336
 337                 /* since timeout is not specified, compute and use
 338                  * the one specific to the ongoing operation */
 339                 if ( opidx == LDAP_REQ_SEARCH ) {
 340                         if ( op->ors_tlimit <= 0 ) {
 341                                 timeout = 0;
 342
 343                         } else {
 344                                 timeout = op->ors_tlimit;
 345                                 timeout_err = LDAP_TIMELIMIT_EXCEEDED;
 346                                 timeout_text = NULL;
 347                         }
 348
 349                 } else {
 350                         timeout = mt->mt_timeout[ opidx ];
 351                 }
 352
 353                 /* better than nothing :) */
 354                 if ( timeout == 0 ) {
 355                         if ( mi->mi_idle_timeout ) {
 356                                 timeout = mi->mi_idle_timeout;
 357
 358                         } else if ( mi->mi_conn_ttl ) {
 359                                 timeout = mi->mi_conn_ttl;
 360                         }
 361                 }
 362
 363                 if ( timeout ) {
 364                         stoptime = op->o_time + timeout;
 365                 }
 366
 367                 LDAP_BACK_TV_SET( &tv );
 368
 369                 /*
 370                  * handle response!!!
 371                  */
 372 retry:;
 373                 rc = ldap_result( msc->msc_ld, msgid, LDAP_MSG_ALL, &tv, &res );
 374                 switch ( rc ) {
 375                 case 0:
 376                         if ( nretries != META_RETRY_NEVER
 377                                 || ( timeout && slap_get_time() <= stoptime ) )
 378                         {
 379                                 ldap_pvt_thread_yield();
 380                                 if ( nretries > 0 ) {
 381                                         nretries--;
 382                                 }
 383                                 tv = mt->mt_bind_timeout;
 384                                 goto retry;
 385                         }
 386
 387                         /* don't let anyone else use this handler,
 388                          * because there's a pending bind that will not
 389                          * be acknowledged */
 390                         ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
 391                         assert( LDAP_BACK_CONN_BINDING( msc ) );
 392
 393 #ifdef DEBUG_205
 394                         Debug( LDAP_DEBUG_ANY, "### %s meta_back_bind_op_result ldap_unbind_ext[%d] ld=%p\n",
 395                                 op->o_log_prefix, candidate, (void *)msc->msc_ld );
 396 #endif /* DEBUG_205 */
 397
 398                         meta_clear_one_candidate( op, mc, candidate );
 399                         ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
 400
 401                         rs->sr_err = timeout_err;
 402                         rs->sr_text = timeout_text;
 403                         break;
 404
 405                 case -1:
 406                         ldap_get_option( msc->msc_ld, LDAP_OPT_RESULT_CODE,
 407                                 &rs->sr_err );
 408
 409                         snprintf( buf, sizeof( buf ),
 410                                 "err=%d (%s) nretries=%d",
 411                                 rs->sr_err, ldap_err2string( rs->sr_err ), nretries );
 412                         Debug( LDAP_DEBUG_ANY,
 413                                 "### %s meta_back_bind_op_result[%d]: %s.\n",
 414                                 op->o_log_prefix, candidate, buf );
 415                         break;
 416
 417                 default:
 418                         /* only touch when activity actually took place... */
 419                         if ( mi->mi_idle_timeout != 0 && msc->msc_time < op->o_time ) {
 420                                 msc->msc_time = op->o_time;
 421                         }
 422
 423                         /* FIXME: matched? referrals? response controls? */
 424                         rc = ldap_parse_result( msc->msc_ld, res, &rs->sr_err,
 425                                         NULL, NULL, NULL, NULL, 1 );
 426                         if ( rc != LDAP_SUCCESS ) {
 427                                 rs->sr_err = rc;
 428                         }
 429                         break;
 430                 }
 431         }
 432
 433         rs->sr_err = slap_map_api2result( rs );
 434
 435         Debug( LDAP_DEBUG_TRACE,
 436                 "<<< %s meta_back_bind_op_result[%d] err=%d\n",
 437                 op->o_log_prefix, candidate, rs->sr_err );
 438
 439         return rs->sr_err;
 440 }
 441
 442 /*
 443  * meta_back_single_bind
 444  *
 445  * attempts to perform a bind with creds
 446  */
 447 static int
 448 meta_back_single_bind(
 449         Operation               *op,
 450         SlapReply               *rs,
 451         metaconn_t              *mc,
 452         int                     candidate )
 453 {
 454         metainfo_t              *mi = ( metainfo_t * )op->o_bd->be_private;
 455         metatarget_t            *mt = mi->mi_targets[ candidate ];
 456         struct berval           mdn = BER_BVNULL;
 457         metasingleconn_t        *msc = &mc->mc_conns[ candidate ];
 458         int                     msgid;
 459         dncookie                dc;
 460
 461         if ( !BER_BVISNULL( &msc->msc_bound_ndn ) ) {
 462                 ch_free( msc->msc_bound_ndn.bv_val );
 463                 BER_BVZERO( &msc->msc_bound_ndn );
 464         }
 465
 466         if ( !BER_BVISNULL( &msc->msc_cred ) ) {
 467                 /* destroy sensitive data */
 468                 memset( msc->msc_cred.bv_val, 0, msc->msc_cred.bv_len );
 469                 ch_free( msc->msc_cred.bv_val );
 470                 BER_BVZERO( &msc->msc_cred );
 471         }
 472
 473         /*
 474          * Rewrite the bind dn if needed
 475          */
 476         dc.target = mt;
 477         dc.conn = op->o_conn;
 478         dc.rs = rs;
 479         dc.ctx = "bindDN";
 480
 481         if ( ldap_back_dn_massage( &dc, &op->o_req_dn, &mdn ) ) {
 482                 rs->sr_text = "DN rewrite error";
 483                 rs->sr_err = LDAP_OTHER;
 484                 return rs->sr_err;
 485         }
 486
 487         /* FIXME: this fixes the bind problem right now; we need
 488          * to use the asynchronous version to get the "matched"
 489          * and more in case of failure ... */
 490         /* FIXME: should we check if at least some of the op->o_ctrls
 491          * can/should be passed? */
 492         rs->sr_err = ldap_sasl_bind( msc->msc_ld, mdn.bv_val,
 493                         LDAP_SASL_SIMPLE, &op->orb_cred,
 494                         op->o_ctrls, NULL, &msgid );
 495         meta_back_bind_op_result( op, rs, mc, candidate, msgid, LDAP_BACK_DONTSEND );
 496         if ( rs->sr_err != LDAP_SUCCESS ) {
 497                 goto return_results;
 498         }
 499
 500         /* If defined, proxyAuthz will be used also when
 501          * back-ldap is the authorizing backend; for this
 502          * purpose, a successful bind is followed by a
 503          * bind with the configured identity assertion */
 504         /* NOTE: use with care */
 505         if ( mt->mt_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) {
 506                 meta_back_proxy_authz_bind( mc, candidate, op, rs, LDAP_BACK_SENDERR );
 507                 if ( !LDAP_BACK_CONN_ISBOUND( msc ) ) {
 508                         goto return_results;
 509                 }
 510                 goto cache_refresh;
 511         }
 512
 513         ber_bvreplace( &msc->msc_bound_ndn, &op->o_req_ndn );
 514         LDAP_BACK_CONN_ISBOUND_SET( msc );
 515         mc->mc_authz_target = candidate;
 516
 517         if ( LDAP_BACK_SAVECRED( mi ) ) {
 518                 if ( !BER_BVISNULL( &msc->msc_cred ) ) {
 519                         memset( msc->msc_cred.bv_val, 0,
 520                                 msc->msc_cred.bv_len );
 521                 }
 522                 ber_bvreplace( &msc->msc_cred, &op->orb_cred );
 523                 ldap_set_rebind_proc( msc->msc_ld, mt->mt_rebind_f, msc );
 524         }
 525
 526 cache_refresh:;
 527         if ( mi->mi_cache.ttl != META_DNCACHE_DISABLED
 528                         && !BER_BVISEMPTY( &op->o_req_ndn ) )
 529         {
 530                 ( void )meta_dncache_update_entry( &mi->mi_cache,
 531                                 &op->o_req_ndn, candidate );
 532         }
 533
 534 return_results:;
 535         if ( mdn.bv_val != op->o_req_dn.bv_val ) {
 536                 free( mdn.bv_val );
 537         }
 538
 539         if ( META_BACK_TGT_QUARANTINE( mt ) ) {
 540                 meta_back_quarantine( op, rs, candidate );
 541         }
 542
 543         return rs->sr_err;
 544 }
 545
 546 /*
 547  * meta_back_single_dobind
 548  */
 549 int
 550 meta_back_single_dobind(
 551         Operation               *op,
 552         SlapReply               *rs,
 553         metaconn_t              **mcp,
 554         int                     candidate,
 555         ldap_back_send_t        sendok,
 556         int                     nretries,
 557         int                     dolock )
 558 {
 559         metainfo_t              *mi = ( metainfo_t * )op->o_bd->be_private;
 560         metatarget_t            *mt = mi->mi_targets[ candidate ];
 561         metaconn_t              *mc = *mcp;
 562         metasingleconn_t        *msc = &mc->mc_conns[ candidate ];
 563         static struct berval    cred = BER_BVC( "" );
 564         int                     msgid;
 565
 566         assert( !LDAP_BACK_CONN_ISBOUND( msc ) );
 567
 568         /* NOTE: this obsoletes pseudorootdn */
 569         if ( op->o_conn != NULL &&
 570                 !op->o_do_not_cache &&
 571                 ( BER_BVISNULL( &msc->msc_bound_ndn ) ||
 572                         BER_BVISEMPTY( &msc->msc_bound_ndn ) ||
 573                         ( LDAP_BACK_CONN_ISPRIV( mc ) && dn_match( &msc->msc_bound_ndn, &mt->mt_idassert_authcDN ) ) ||
 574                         ( mt->mt_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) ) )
 575         {
 576                 (void)meta_back_proxy_authz_bind( mc, candidate, op, rs, sendok );
 577
 578         } else {
 579
 580                 /* FIXME: should we check if at least some of the op->o_ctrls
 581                  * can/should be passed? */
 582                 rs->sr_err = ldap_sasl_bind( msc->msc_ld,
 583                         "", LDAP_SASL_SIMPLE, &cred,
 584                         NULL, NULL, &msgid );
 585                 rs->sr_err = meta_back_bind_op_result( op, rs, mc, candidate, msgid, sendok );
 586         }
 587
 588         if ( rs->sr_err != LDAP_SUCCESS ) {
 589                 if ( dolock ) {
 590                         ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
 591                 }
 592                 LDAP_BACK_CONN_BINDING_CLEAR( msc );
 593                 if ( META_BACK_ONERR_STOP( mi ) ) {
 594                         LDAP_BACK_CONN_TAINTED_SET( mc );
 595                         meta_back_release_conn_lock( mi, mc, 0 );
 596                         *mcp = NULL;
 597                 }
 598                 if ( dolock ) {
 599                         ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
 600                 }
 601         }
 602
 603         if ( META_BACK_TGT_QUARANTINE( mt ) ) {
 604                 meta_back_quarantine( op, rs, candidate );
 605         }
 606
 607         return rs->sr_err;
 608 }
 609
 610 /*
 611  * meta_back_dobind
 612  */
 613 int
 614 meta_back_dobind(
 615         Operation               *op,
 616         SlapReply               *rs,
 617         metaconn_t              *mc,
 618         ldap_back_send_t        sendok )
 619 {
 620         metainfo_t              *mi = ( metainfo_t * )op->o_bd->be_private;
 621
 622         int                     bound = 0,
 623                                 i,
 624                                 isroot = 0;
 625
 626         SlapReply               *candidates = meta_back_candidates_get( op );
 627
 628         if ( be_isroot( op ) ) {
 629                 isroot = 1;
 630         }
 631
 632         Debug( LDAP_DEBUG_TRACE,
 633                 "%s meta_back_dobind: conn=%ld%s\n",
 634                 op->o_log_prefix,
 635                 LDAP_BACK_PCONN_ID( mc ),
 636                 isroot ? " (isroot)" : "" );
 637
 638         /*
 639          * all the targets are bound as pseudoroot
 640          */
 641         if ( mc->mc_authz_target == META_BOUND_ALL ) {
 642                 bound = 1;
 643                 goto done;
 644         }
 645
 646         for ( i = 0; i < mi->mi_ntargets; i++ ) {
 647                 metatarget_t            *mt = mi->mi_targets[ i ];
 648                 metasingleconn_t        *msc = &mc->mc_conns[ i ];
 649                 int                     rc;
 650
 651                 /*
 652                  * Not a candidate
 653                  */
 654                 if ( !META_IS_CANDIDATE( &candidates[ i ] ) ) {
 655                         continue;
 656                 }
 657
 658                 assert( msc->msc_ld != NULL );
 659
 660                 /*
 661                  * If the target is already bound it is skipped
 662                  */
 663
 664 retry_binding:;
 665                 ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
 666                 if ( LDAP_BACK_CONN_ISBOUND( msc )
 667                         || ( LDAP_BACK_CONN_ISANON( msc )
 668                                 && mt->mt_idassert_authmethod == LDAP_AUTH_NONE ) )
 669                 {
 670                         ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
 671                         ++bound;
 672                         continue;
 673
 674                 } else if ( META_BACK_CONN_CREATING( msc ) || LDAP_BACK_CONN_BINDING( msc ) )
 675                 {
 676                         ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
 677                         ldap_pvt_thread_yield();
 678                         goto retry_binding;
 679
 680                 }
 681
 682                 LDAP_BACK_CONN_BINDING_SET( msc );
 683                 ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
 684
 685                 rc = meta_back_single_dobind( op, rs, &mc, i,
 686                         LDAP_BACK_DONTSEND, mt->mt_nretries, 1 );
 687                 /*
 688                  * NOTE: meta_back_single_dobind() already retries;
 689                  * in case of failure, it resets mc...
 690                  */
 691                 if ( rc != LDAP_SUCCESS ) {
 692                         char            buf[ SLAP_TEXT_BUFLEN ];
 693
 694                         if ( mc == NULL ) {
 695                                 /* meta_back_single_dobind() already sent
 696                                  * response and released connection */
 697                                 goto send_err;
 698                         }
 699
 700
 701                         if ( rc == LDAP_UNAVAILABLE ) {
 702                                 /* FIXME: meta_back_retry() already re-calls
 703                                  * meta_back_single_dobind() */
 704                                 if ( meta_back_retry( op, rs, &mc, i, sendok ) ) {
 705                                         goto retry_ok;
 706                                 }
 707
 708                                 if ( mc != NULL ) {
 709                                         ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
 710                                         LDAP_BACK_CONN_BINDING_CLEAR( msc );
 711                                         ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
 712                                         meta_back_release_conn( mi, mc );
 713                                 }
 714
 715                                 return 0;
 716                         }
 717
 718                         ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
 719                         LDAP_BACK_CONN_BINDING_CLEAR( msc );
 720                         ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
 721
 722                         snprintf( buf, sizeof( buf ),
 723                                 "meta_back_dobind[%d]: (%s) err=%d (%s).",
 724                                 i, isroot ? op->o_bd->be_rootdn.bv_val : "anonymous",
 725                                 rc, ldap_err2string( rc ) );
 726                         Debug( LDAP_DEBUG_ANY,
 727                                 "%s %s\n",
 728                                 op->o_log_prefix, buf, 0 );
 729
 730                         /*
 731                          * null cred bind should always succeed
 732                          * as anonymous, so a failure means
 733                          * the target is no longer candidate possibly
 734                          * due to technical reasons (remote host down?)
 735                          * so better clear the handle
 736                          */
 737                         /* leave the target candidate, but record the error for later use */
 738                         candidates[ i ].sr_err = rc;
 739                         if ( META_BACK_ONERR_STOP( mi ) ) {
 740                                 bound = 0;
 741                                 goto done;
 742                         }
 743
 744                         continue;
 745                 } /* else */
 746
 747 retry_ok:;
 748                 Debug( LDAP_DEBUG_TRACE,
 749                         "%s meta_back_dobind[%d]: "
 750                         "(%s)\n",
 751                         op->o_log_prefix, i,
 752                         isroot ? op->o_bd->be_rootdn.bv_val : "anonymous" );
 753
 754                 ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
 755                 LDAP_BACK_CONN_BINDING_CLEAR( msc );
 756                 if ( isroot ) {
 757                         LDAP_BACK_CONN_ISBOUND_SET( msc );
 758                 } else {
 759                         LDAP_BACK_CONN_ISANON_SET( msc );
 760                 }
 761                 ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
 762                 ++bound;
 763         }
 764
 765 done:;
 766         Debug( LDAP_DEBUG_TRACE,
 767                 "%s meta_back_dobind: conn=%ld bound=%d\n",
 768                 op->o_log_prefix, LDAP_BACK_PCONN_ID( mc ), bound );
 769
 770         if ( bound == 0 ) {
 771                 meta_back_release_conn( mi, mc );
 772
 773 send_err:;
 774                 if ( sendok & LDAP_BACK_SENDERR ) {
 775                         if ( rs->sr_err == LDAP_SUCCESS ) {
 776                                 rs->sr_err = LDAP_BUSY;
 777                         }
 778                         send_ldap_result( op, rs );
 779                 }
 780
 781                 return 0;
 782         }
 783
 784         return ( bound > 0 );
 785 }
 786
 787 /*
 788  * meta_back_default_rebind
 789  *
 790  * This is a callback used for chasing referrals using the same
 791  * credentials as the original user on this session.
 792  */
 793 int
 794 meta_back_default_rebind(
 795         LDAP                    *ld,
 796         LDAP_CONST char         *url,
 797         ber_tag_t               request,
 798         ber_int_t               msgid,
 799         void                    *params )
 800 {
 801         metasingleconn_t        *msc = ( metasingleconn_t * )params;
 802
 803         return ldap_sasl_bind_s( ld, msc->msc_bound_ndn.bv_val,
 804                         LDAP_SASL_SIMPLE, &msc->msc_cred,
 805                         NULL, NULL, NULL );
 806 }
 807
 808 int
 809 meta_back_cancel(
 810         metaconn_t              *mc,
 811         Operation               *op,
 812         SlapReply               *rs,
 813         ber_int_t               msgid,
 814         int                     candidate,
 815         ldap_back_send_t        sendok )
 816 {
 817         metainfo_t              *mi = (metainfo_t *)op->o_bd->be_private;
 818
 819         metatarget_t            *mt = mi->mi_targets[ candidate ];
 820         metasingleconn_t        *msc = &mc->mc_conns[ candidate ];
 821
 822         int                     rc = LDAP_OTHER;
 823
 824         Debug( LDAP_DEBUG_TRACE, ">>> %s meta_back_cancel[%d] msgid=%d\n",
 825                 op->o_log_prefix, candidate, msgid );
 826
 827         /* default behavior */
 828         if ( META_BACK_TGT_ABANDON( mt ) ) {
 829                 rc = ldap_abandon_ext( msc->msc_ld, msgid, NULL, NULL );
 830
 831         } else if ( META_BACK_TGT_CANCEL( mt ) ) {
 832                 rc = ldap_cancel_s( msc->msc_ld, msgid, NULL, NULL );
 833
 834         } else {
 835                 assert( 0 );
 836         }
 837
 838         Debug( LDAP_DEBUG_TRACE, "<<< %s meta_back_cancel[%d] err=%d\n",
 839                 op->o_log_prefix, candidate, rc );
 840
 841         return rc;
 842 }
 843
 844
 845
 846 /*
 847  * FIXME: error return must be handled in a cleaner way ...
 848  */
 849 int
 850 meta_back_op_result(
 851         metaconn_t              *mc,
 852         Operation               *op,
 853         SlapReply               *rs,
 854         int                     candidate,
 855         ber_int_t               msgid,
 856         time_t                  timeout,
 857         ldap_back_send_t        sendok )
 858 {
 859         metainfo_t      *mi = ( metainfo_t * )op->o_bd->be_private;
 860
 861         const char      *save_text = rs->sr_text,
 862                         *save_matched = rs->sr_matched;
 863         BerVarray       save_ref = rs->sr_ref;
 864         LDAPControl     **save_ctrls = rs->sr_ctrls;
 865         void            *matched_ctx = NULL;
 866
 867         char            *matched = NULL;
 868         char            *text = NULL;
 869         char            **refs = NULL;
 870         LDAPControl     **ctrls = NULL;
 871
 872         assert( mc != NULL );
 873
 874         rs->sr_text = NULL;
 875         rs->sr_matched = NULL;
 876         rs->sr_ref = NULL;
 877         rs->sr_ctrls = NULL;
 878
 879         if ( candidate != META_TARGET_NONE ) {
 880                 metatarget_t            *mt = mi->mi_targets[ candidate ];
 881                 metasingleconn_t        *msc = &mc->mc_conns[ candidate ];
 882
 883 #define ERR_OK(err) ((err) == LDAP_SUCCESS || (err) == LDAP_COMPARE_FALSE || (err) == LDAP_COMPARE_TRUE)
 884
 885                 if ( ERR_OK( rs->sr_err ) ) {
 886                         int             rc;
 887                         struct timeval  tv;
 888                         LDAPMessage     *res = NULL;
 889                         time_t          stoptime = (time_t)(-1);
 890                         int             timeout_err = op->o_protocol >= LDAP_VERSION3 ?
 891                                                 LDAP_ADMINLIMIT_EXCEEDED : LDAP_OTHER;
 892                         const char      *timeout_text = "Operation timed out";
 893
 894                         /* if timeout is not specified, compute and use
 895                          * the one specific to the ongoing operation */
 896                         if ( timeout == (time_t)(-1) ) {
 897                                 slap_op_t       opidx = slap_req2op( op->o_tag );
 898
 899                                 if ( opidx == SLAP_OP_SEARCH ) {
 900                                         if ( op->ors_tlimit <= 0 ) {
 901                                                 timeout = 0;
 902
 903                                         } else {
 904                                                 timeout = op->ors_tlimit;
 905                                                 timeout_err = LDAP_TIMELIMIT_EXCEEDED;
 906                                                 timeout_text = NULL;
 907                                         }
 908
 909                                 } else {
 910                                         timeout = mt->mt_timeout[ opidx ];
 911                                 }
 912                         }
 913
 914                         /* better than nothing :) */
 915                         if ( timeout == 0 ) {
 916                                 if ( mi->mi_idle_timeout ) {
 917                                         timeout = mi->mi_idle_timeout;
 918
 919                                 } else if ( mi->mi_conn_ttl ) {
 920                                         timeout = mi->mi_conn_ttl;
 921                                 }
 922                         }
 923
 924                         if ( timeout ) {
 925                                 stoptime = op->o_time + timeout;
 926                         }
 927
 928                         LDAP_BACK_TV_SET( &tv );
 929
 930 retry:;
 931                         rc = ldap_result( msc->msc_ld, msgid, LDAP_MSG_ALL, &tv, &res );
 932                         switch ( rc ) {
 933                         case 0:
 934                                 if ( timeout && slap_get_time() > stoptime ) {
 935                                         (void)meta_back_cancel( mc, op, rs, msgid, candidate, sendok );
 936                                         rs->sr_err = timeout_err;
 937                                         rs->sr_text = timeout_text;
 938                                         break;
 939                                 }
 940
 941                                 LDAP_BACK_TV_SET( &tv );
 942                                 ldap_pvt_thread_yield();
 943                                 goto retry;
 944
 945                         case -1:
 946                                 ldap_get_option( msc->msc_ld, LDAP_OPT_RESULT_CODE,
 947                                                 &rs->sr_err );
 948                                 break;
 949
 950
 951                         /* otherwise get the result; if it is not
 952                          * LDAP_SUCCESS, record it in the reply
 953                          * structure (this includes
 954                          * LDAP_COMPARE_{TRUE|FALSE}) */
 955                         default:
 956                                 /* only touch when activity actually took place... */
 957                                 if ( mi->mi_idle_timeout != 0 && msc->msc_time < op->o_time ) {
 958                                         msc->msc_time = op->o_time;
 959                                 }
 960
 961                                 rc = ldap_parse_result( msc->msc_ld, res, &rs->sr_err,
 962                                                 &matched, &text, &refs, &ctrls, 1 );
 963                                 res = NULL;
 964                                 rs->sr_text = text;
 965                                 if ( rc != LDAP_SUCCESS ) {
 966                                         rs->sr_err = rc;
 967                                 }
 968                                 if ( refs != NULL ) {
 969                                         int     i;
 970
 971                                         for ( i = 0; refs[ i ] != NULL; i++ )
 972                                                 /* count */ ;
 973                                         rs->sr_ref = op->o_tmpalloc( sizeof( struct berval ) * ( i + 1 ),
 974                                                 op->o_tmpmemctx );
 975                                         for ( i = 0; refs[ i ] != NULL; i++ ) {
 976                                                 ber_str2bv( refs[ i ], 0, 0, &rs->sr_ref[ i ] );
 977                                         }
 978                                         BER_BVZERO( &rs->sr_ref[ i ] );
 979                                 }
 980                                 if ( ctrls != NULL ) {
 981                                         rs->sr_ctrls = ctrls;
 982                                 }
 983                         }
 984
 985                         assert( res == NULL );
 986                 }
 987
 988                 /* if the error in the reply structure is not
 989                  * LDAP_SUCCESS, try to map it from client
 990                  * to server error */
 991                 if ( !ERR_OK( rs->sr_err ) ) {
 992                         rs->sr_err = slap_map_api2result( rs );
 993
 994                         /* internal ops ( op->o_conn == NULL )
 995                          * must not reply to client */
 996                         if ( op->o_conn && !op->o_do_not_cache && matched ) {
 997
 998                                 /* record the (massaged) matched
 999                                  * DN into the reply structure */
1000                                 rs->sr_matched = matched;
1001                         }
1002                 }
1003
1004                 if ( META_BACK_TGT_QUARANTINE( mt ) ) {
1005                         meta_back_quarantine( op, rs, candidate );
1006                 }
1007
1008         } else {
1009                 int     i,
1010                         err = rs->sr_err;
1011
1012                 for ( i = 0; i < mi->mi_ntargets; i++ ) {
1013                         metasingleconn_t        *msc = &mc->mc_conns[ i ];
1014                         char                    *xtext = NULL;
1015                         char                    *xmatched = NULL;
1016
1017                         rs->sr_err = LDAP_SUCCESS;
1018
1019                         ldap_get_option( msc->msc_ld, LDAP_OPT_ERROR_NUMBER, &rs->sr_err );
1020                         if ( rs->sr_err != LDAP_SUCCESS ) {
1021                                 /*
1022                                  * better check the type of error. In some cases
1023                                  * (search ?) it might be better to return a
1024                                  * success if at least one of the targets gave
1025                                  * positive result ...
1026                                  */
1027                                 ldap_get_option( msc->msc_ld,
1028                                                 LDAP_OPT_ERROR_STRING, &xtext );
1029                                 if ( xtext != NULL && xtext [ 0 ] == '\0' ) {
1030                                         ldap_memfree( xtext );
1031                                         xtext = NULL;
1032                                 }
1033
1034                                 ldap_get_option( msc->msc_ld,
1035                                                 LDAP_OPT_MATCHED_DN, &xmatched );
1036                                 if ( xmatched != NULL && xmatched[ 0 ] == '\0' ) {
1037                                         ldap_memfree( xmatched );
1038                                         xmatched = NULL;
1039                                 }
1040
1041                                 rs->sr_err = slap_map_api2result( rs );
1042
1043                                 if ( StatslogTest( LDAP_DEBUG_ANY ) ) {
1044                                         char    buf[ SLAP_TEXT_BUFLEN ];
1045
1046                                         snprintf( buf, sizeof( buf ),
1047                                                 "meta_back_op_result[%d] "
1048                                                 "err=%d text=\"%s\" matched=\"%s\"",
1049                                                 i, rs->sr_err,
1050                                                 ( xtext ? xtext : "" ),
1051                                                 ( xmatched ? xmatched : "" ) );
1052                                         Debug( LDAP_DEBUG_ANY, "%s %s.\n",
1053                                                 op->o_log_prefix, buf, 0 );
1054                                 }
1055
1056                                 /*
1057                                  * FIXME: need to rewrite "match" (need rwinfo)
1058                                  */
1059                                 switch ( rs->sr_err ) {
1060                                 default:
1061                                         err = rs->sr_err;
1062                                         if ( xtext != NULL ) {
1063                                                 if ( text ) {
1064                                                         ldap_memfree( text );
1065                                                 }
1066                                                 text = xtext;
1067                                                 xtext = NULL;
1068                                         }
1069                                         if ( xmatched != NULL ) {
1070                                                 if ( matched ) {
1071                                                         ldap_memfree( matched );
1072                                                 }
1073                                                 matched = xmatched;
1074                                                 xmatched = NULL;
1075                                         }
1076                                         break;
1077                                 }
1078
1079                                 if ( xtext ) {
1080                                         ldap_memfree( xtext );
1081                                 }
1082
1083                                 if ( xmatched ) {
1084                                         ldap_memfree( xmatched );
1085                                 }
1086                         }
1087
1088                         if ( META_BACK_TGT_QUARANTINE( mi->mi_targets[ i ] ) ) {
1089                                 meta_back_quarantine( op, rs, i );
1090                         }
1091                 }
1092
1093                 if ( err != LDAP_SUCCESS ) {
1094                         rs->sr_err = err;
1095                 }
1096         }
1097
1098         if ( matched != NULL ) {
1099                 struct berval   dn, pdn;
1100
1101                 ber_str2bv( matched, 0, 0, &dn );
1102                 if ( dnPretty( NULL, &dn, &pdn, op->o_tmpmemctx ) == LDAP_SUCCESS ) {
1103                         ldap_memfree( matched );
1104                         matched_ctx = op->o_tmpmemctx;
1105                         matched = pdn.bv_val;
1106                 }
1107                 rs->sr_matched = matched;
1108         }
1109
1110         if ( op->o_conn &&
1111                 ( ( sendok & LDAP_BACK_SENDOK )
1112                         || ( ( sendok & LDAP_BACK_SENDERR ) && rs->sr_err != LDAP_SUCCESS ) ) )
1113         {
1114                 send_ldap_result( op, rs );
1115         }
1116         if ( matched ) {
1117                 op->o_tmpfree( (char *)rs->sr_matched, matched_ctx );
1118         }
1119         if ( text ) {
1120                 ldap_memfree( text );
1121         }
1122         if ( rs->sr_ref ) {
1123                 assert( refs != NULL );
1124                 ber_memvfree( (void **)refs );
1125                 op->o_tmpfree( rs->sr_ref, op->o_tmpmemctx );
1126         }
1127         if ( ctrls ) {
1128                 assert( rs->sr_ctrls != NULL );
1129                 ldap_controls_free( ctrls );
1130         }
1131
1132         rs->sr_text = save_text;
1133         rs->sr_matched = save_matched;
1134         rs->sr_ref = save_ref;
1135         rs->sr_ctrls = save_ctrls;
1136
1137         return( ERR_OK( rs->sr_err ) ? LDAP_SUCCESS : rs->sr_err );
1138 }
1139
1140 /*
1141  * meta_back_proxy_authz_cred()
1142  *
1143  * prepares credentials & method for meta_back_proxy_authz_bind();
1144  * or, if method is SASL, performs the SASL bind directly.
1145  */
1146 int
1147 meta_back_proxy_authz_cred(
1148         metaconn_t              *mc,
1149         int                     candidate,
1150         Operation               *op,
1151         SlapReply               *rs,
1152         ldap_back_send_t        sendok,
1153         struct berval           *binddn,
1154         struct berval           *bindcred,
1155         int                     *method )
1156 {
1157         metainfo_t              *mi = (metainfo_t *)op->o_bd->be_private;
1158         metatarget_t            *mt = mi->mi_targets[ candidate ];
1159         metasingleconn_t        *msc = &mc->mc_conns[ candidate ];
1160         struct berval           ndn;
1161         int                     dobind = 0;
1162
1163         /* don't proxyAuthz if protocol is not LDAPv3 */
1164         switch ( mt->mt_version ) {
1165         case LDAP_VERSION3:
1166                 break;
1167
1168         case 0:
1169                 if ( op->o_protocol == 0 || op->o_protocol == LDAP_VERSION3 ) {
1170                         break;
1171                 }
1172                 /* fall thru */
1173
1174         default:
1175                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1176                 if ( sendok & LDAP_BACK_SENDERR ) {
1177                         send_ldap_result( op, rs );
1178                 }
1179                 LDAP_BACK_CONN_ISBOUND_CLEAR( msc );
1180                 goto done;
1181         }
1182
1183         if ( op->o_tag == LDAP_REQ_BIND ) {
1184                 ndn = op->o_req_ndn;
1185
1186         } else if ( !BER_BVISNULL( &op->o_conn->c_ndn ) ) {
1187                 ndn = op->o_conn->c_ndn;
1188
1189         } else {
1190                 ndn = op->o_ndn;
1191         }
1192
1193         /*
1194          * FIXME: we need to let clients use proxyAuthz
1195          * otherwise we cannot do symmetric pools of servers;
1196          * we have to live with the fact that a user can
1197          * authorize itself as any ID that is allowed
1198          * by the authzTo directive of the "proxyauthzdn".
1199          */
1200         /*
1201          * NOTE: current Proxy Authorization specification
1202          * and implementation do not allow proxy authorization
1203          * control to be provided with Bind requests
1204          */
1205         /*
1206          * if no bind took place yet, but the connection is bound
1207          * and the "proxyauthzdn" is set, then bind as
1208          * "proxyauthzdn" and explicitly add the proxyAuthz
1209          * control to every operation with the dn bound
1210          * to the connection as control value.
1211          */
1212
1213         /* bind as proxyauthzdn only if no idassert mode
1214          * is requested, or if the client's identity
1215          * is authorized */
1216         switch ( mt->mt_idassert_mode ) {
1217         case LDAP_BACK_IDASSERT_LEGACY:
1218                 if ( !BER_BVISNULL( &ndn ) && !BER_BVISEMPTY( &ndn ) ) {
1219                         if ( !BER_BVISNULL( &mt->mt_idassert_authcDN ) && !BER_BVISEMPTY( &mt->mt_idassert_authcDN ) )
1220                         {
1221                                 *binddn = mt->mt_idassert_authcDN;
1222                                 *bindcred = mt->mt_idassert_passwd;
1223                                 dobind = 1;
1224                         }
1225                 }
1226                 break;
1227
1228         default:
1229                 /* NOTE: rootdn can always idassert */
1230                 if ( BER_BVISNULL( &ndn )
1231                         && mt->mt_idassert_authz == NULL
1232                         && !( mt->mt_idassert_flags & LDAP_BACK_AUTH_AUTHZ_ALL ) )
1233                 {
1234                         if ( mt->mt_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
1235                                 rs->sr_err = LDAP_INAPPROPRIATE_AUTH;
1236                                 if ( sendok & LDAP_BACK_SENDERR ) {
1237                                         send_ldap_result( op, rs );
1238                                 }
1239                                 LDAP_BACK_CONN_ISBOUND_CLEAR( msc );
1240                                 goto done;
1241
1242                         }
1243
1244                         rs->sr_err = LDAP_SUCCESS;
1245                         *binddn = slap_empty_bv;
1246                         *bindcred = slap_empty_bv;
1247                         break;
1248
1249                 } else if ( mt->mt_idassert_authz && !be_isroot( op ) ) {
1250                         struct berval authcDN;
1251
1252                         if ( BER_BVISNULL( &ndn ) ) {
1253                                 authcDN = slap_empty_bv;
1254
1255                         } else {
1256                                 authcDN = ndn;
1257                         }
1258                         rs->sr_err = slap_sasl_matches( op, mt->mt_idassert_authz,
1259                                         &authcDN, &authcDN );
1260                         if ( rs->sr_err != LDAP_SUCCESS ) {
1261                                 if ( mt->mt_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
1262                                         if ( sendok & LDAP_BACK_SENDERR ) {
1263                                                 send_ldap_result( op, rs );
1264                                         }
1265                                         LDAP_BACK_CONN_ISBOUND_CLEAR( msc );
1266                                         goto done;
1267                                 }
1268
1269                                 rs->sr_err = LDAP_SUCCESS;
1270                                 *binddn = slap_empty_bv;
1271                                 *bindcred = slap_empty_bv;
1272                                 break;
1273                         }
1274                 }
1275
1276                 *binddn = mt->mt_idassert_authcDN;
1277                 *bindcred = mt->mt_idassert_passwd;
1278                 dobind = 1;
1279                 break;
1280         }
1281
1282         if ( dobind && mt->mt_idassert_authmethod == LDAP_AUTH_SASL ) {
1283 #ifdef HAVE_CYRUS_SASL
1284                 void            *defaults = NULL;
1285                 struct berval   authzID = BER_BVNULL;
1286                 int             freeauthz = 0;
1287
1288                 /* if SASL supports native authz, prepare for it */
1289                 if ( ( !op->o_do_not_cache || !op->o_is_auth_check ) &&
1290                                 ( mt->mt_idassert_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ ) )
1291                 {
1292                         switch ( mt->mt_idassert_mode ) {
1293                         case LDAP_BACK_IDASSERT_OTHERID:
1294                         case LDAP_BACK_IDASSERT_OTHERDN:
1295                                 authzID = mt->mt_idassert_authzID;
1296                                 break;
1297
1298                         case LDAP_BACK_IDASSERT_ANONYMOUS:
1299                                 BER_BVSTR( &authzID, "dn:" );
1300                                 break;
1301
1302                         case LDAP_BACK_IDASSERT_SELF:
1303                                 if ( BER_BVISNULL( &ndn ) ) {
1304                                         /* connection is not authc'd, so don't idassert */
1305                                         BER_BVSTR( &authzID, "dn:" );
1306                                         break;
1307                                 }
1308                                 authzID.bv_len = STRLENOF( "dn:" ) + ndn.bv_len;
1309                                 authzID.bv_val = slap_sl_malloc( authzID.bv_len + 1, op->o_tmpmemctx );
1310                                 AC_MEMCPY( authzID.bv_val, "dn:", STRLENOF( "dn:" ) );
1311                                 AC_MEMCPY( authzID.bv_val + STRLENOF( "dn:" ),
1312                                                 ndn.bv_val, ndn.bv_len + 1 );
1313                                 freeauthz = 1;
1314                                 break;
1315
1316                         default:
1317                                 break;
1318                         }
1319                 }
1320
1321                 if ( mt->mt_idassert_secprops != NULL ) {
1322                         rs->sr_err = ldap_set_option( msc->msc_ld,
1323                                 LDAP_OPT_X_SASL_SECPROPS,
1324                                 (void *)mt->mt_idassert_secprops );
1325
1326                         if ( rs->sr_err != LDAP_OPT_SUCCESS ) {
1327                                 rs->sr_err = LDAP_OTHER;
1328                                 if ( sendok & LDAP_BACK_SENDERR ) {
1329                                         send_ldap_result( op, rs );
1330                                 }
1331                                 LDAP_BACK_CONN_ISBOUND_CLEAR( msc );
1332                                 goto done;
1333                         }
1334                 }
1335
1336                 defaults = lutil_sasl_defaults( msc->msc_ld,
1337                                 mt->mt_idassert_sasl_mech.bv_val,
1338                                 mt->mt_idassert_sasl_realm.bv_val,
1339                                 mt->mt_idassert_authcID.bv_val,
1340                                 mt->mt_idassert_passwd.bv_val,
1341                                 authzID.bv_val );
1342
1343                 rs->sr_err = ldap_sasl_interactive_bind_s( msc->msc_ld, binddn->bv_val,
1344                                 mt->mt_idassert_sasl_mech.bv_val, NULL, NULL,
1345                                 LDAP_SASL_QUIET, lutil_sasl_interact,
1346                                 defaults );
1347
1348                 rs->sr_err = slap_map_api2result( rs );
1349                 if ( rs->sr_err != LDAP_SUCCESS ) {
1350                         LDAP_BACK_CONN_ISBOUND_CLEAR( msc );
1351                         if ( sendok & LDAP_BACK_SENDERR ) {
1352                                 send_ldap_result( op, rs );
1353                         }
1354
1355                 } else {
1356                         LDAP_BACK_CONN_ISBOUND_SET( msc );
1357                 }
1358
1359                 lutil_sasl_freedefs( defaults );
1360                 if ( freeauthz ) {
1361                         slap_sl_free( authzID.bv_val, op->o_tmpmemctx );
1362                 }
1363
1364                 goto done;
1365 #endif /* HAVE_CYRUS_SASL */
1366         }
1367
1368         *method = mt->mt_idassert_authmethod;
1369         switch ( mt->mt_idassert_authmethod ) {
1370         case LDAP_AUTH_NONE:
1371                 BER_BVSTR( binddn, "" );
1372                 BER_BVSTR( bindcred, "" );
1373                 /* fallthru */
1374
1375         case LDAP_AUTH_SIMPLE:
1376                 break;
1377
1378         default:
1379                 /* unsupported! */
1380                 LDAP_BACK_CONN_ISBOUND_CLEAR( msc );
1381                 rs->sr_err = LDAP_AUTH_METHOD_NOT_SUPPORTED;
1382                 if ( sendok & LDAP_BACK_SENDERR ) {
1383                         send_ldap_result( op, rs );
1384                 }
1385                 break;
1386         }
1387
1388 done:;
1389         return rs->sr_err;
1390 }
1391
1392 static int
1393 meta_back_proxy_authz_bind( metaconn_t *mc, int candidate, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
1394 {
1395         metainfo_t              *mi = (metainfo_t *)op->o_bd->be_private;
1396         metatarget_t            *mt = mi->mi_targets[ candidate ];
1397         metasingleconn_t        *msc = &mc->mc_conns[ candidate ];
1398         struct berval           binddn = BER_BVC( "" ),
1399                                 cred = BER_BVC( "" );
1400         int                     method = LDAP_AUTH_NONE,
1401                                 rc;
1402
1403         rc = meta_back_proxy_authz_cred( mc, candidate, op, rs, sendok, &binddn, &cred, &method );
1404         if ( rc == LDAP_SUCCESS && !LDAP_BACK_CONN_ISBOUND( msc ) ) {
1405                 int     msgid;
1406
1407                 switch ( method ) {
1408                 case LDAP_AUTH_NONE:
1409                 case LDAP_AUTH_SIMPLE:
1410                         rs->sr_err = ldap_sasl_bind( msc->msc_ld,
1411                                         binddn.bv_val, LDAP_SASL_SIMPLE,
1412                                         &cred, NULL, NULL, &msgid );
1413                         rc = meta_back_bind_op_result( op, rs, mc, candidate, msgid, sendok );
1414                         if ( rc == LDAP_SUCCESS ) {
1415                                 /* set rebind stuff in case of successful proxyAuthz bind,
1416                                  * so that referral chasing is attempted using the right
1417                                  * identity */
1418                                 LDAP_BACK_CONN_ISBOUND_SET( msc );
1419                                 ber_bvreplace( &msc->msc_bound_ndn, &binddn );
1420
1421                                 if ( LDAP_BACK_SAVECRED( mi ) ) {
1422                                         if ( !BER_BVISNULL( &msc->msc_cred ) ) {
1423                                                 memset( msc->msc_cred.bv_val, 0,
1424                                                         msc->msc_cred.bv_len );
1425                                         }
1426                                         ber_bvreplace( &msc->msc_cred, &cred );
1427                                         ldap_set_rebind_proc( msc->msc_ld, mt->mt_rebind_f, msc );
1428                                 }
1429                         }
1430                         break;
1431
1432                 default:
1433                         assert( 0 );
1434                         break;
1435                 }
1436         }
1437
1438         return LDAP_BACK_CONN_ISBOUND( msc );
1439 }