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 1999-2005 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
  37 static LDAP_REBIND_PROC meta_back_default_rebind;
  38
  39 /*
  40  * a module could register a replacement for this function
  41  */
  42 LDAP_REBIND_PROC        *meta_back_rebind_f = meta_back_default_rebind;
  43
  44 static int
  45 meta_back_single_bind(
  46         Operation               *op,
  47         SlapReply               *rs,
  48         metaconn_t              *mc,
  49         int                     candidate );
  50
  51 int
  52 meta_back_bind( Operation *op, SlapReply *rs )
  53 {
  54         metainfo_t      *mi = ( metainfo_t * )op->o_bd->be_private;
  55         metaconn_t      *mc = NULL;
  56
  57         int             rc = LDAP_OTHER,
  58                         i,
  59                         gotit = 0,
  60                         isroot = 0;
  61
  62         SlapReply       *candidates = meta_back_candidates_get( op );
  63
  64         rs->sr_err = LDAP_SUCCESS;
  65
  66         Debug( LDAP_DEBUG_ARGS, "%s meta_back_bind: dn=\"%s\".\n",
  67                 op->o_log_prefix, op->o_req_dn.bv_val, 0 );
  68
  69         /* the test on the bind method should be superfluous */
  70         if ( op->orb_method == LDAP_AUTH_SIMPLE
  71                 && be_isroot_dn( op->o_bd, &op->o_req_ndn ) )
  72         {
  73                 if ( !be_isroot_pw( op ) ) {
  74                         rs->sr_err = LDAP_INVALID_CREDENTIALS;
  75                         rs->sr_text = NULL;
  76                         send_ldap_result( op, rs );
  77                         return rs->sr_err;
  78                 }
  79
  80                 if ( META_BACK_DEFER_ROOTDN_BIND( mi ) ) {
  81                         rs->sr_err = LDAP_SUCCESS;
  82                         rs->sr_text = NULL;
  83                         /* frontend will return success */
  84                         return rs->sr_err;
  85                 }
  86
  87                 isroot = 1;
  88         }
  89
  90         /* we need meta_back_getconn() not send result even on error,
  91          * because we want to intercept the error and make it
  92          * invalidCredentials */
  93         mc = meta_back_getconn( op, rs, NULL, LDAP_BACK_DONTSEND );
  94         if ( !mc ) {
  95                 char    buf[ SLAP_TEXT_BUFLEN ];
  96
  97                 snprintf( buf, sizeof( buf ),
  98                         "meta_back_bind: no target "
  99                         "for dn \"%s\" (%d%s%s).",
 100                         op->o_req_dn.bv_val, rs->sr_err,
 101                         rs->sr_text ? ". " : "",
 102                         rs->sr_text ? rs->sr_text : "" );
 103                 Debug( LDAP_DEBUG_ANY,
 104                         "%s %s\n",
 105                         op->o_log_prefix, buf, 0 );
 106
 107                 /* FIXME: there might be cases where we don't want
 108                  * to map the error onto invalidCredentials */
 109                 switch ( rs->sr_err ) {
 110                 case LDAP_NO_SUCH_OBJECT:
 111                 case LDAP_UNWILLING_TO_PERFORM:
 112                         rs->sr_err = LDAP_INVALID_CREDENTIALS;
 113                         rs->sr_text = NULL;
 114                         break;
 115                 }
 116                 send_ldap_result( op, rs );
 117                 return rs->sr_err;
 118         }
 119
 120         /*
 121          * Each target is scanned ...
 122          */
 123         mc->mc_authz_target = META_BOUND_NONE;
 124         for ( i = 0; i < mi->mi_ntargets; i++ ) {
 125                 int             lerr;
 126                 Operation       op2 = *op;
 127
 128                 /*
 129                  * Skip non-candidates
 130                  */
 131                 if ( candidates[ i ].sr_tag != META_CANDIDATE ) {
 132                         continue;
 133                 }
 134
 135                 if ( gotit == 0 ) {
 136                         /* set rc to LDAP_SUCCESS only if at least
 137                          * one candidate has been tried */
 138                         rc = LDAP_SUCCESS;
 139                         gotit = 1;
 140
 141                 } else if ( isroot == 0 ) {
 142                         /*
 143                          * A bind operation is expected to have
 144                          * ONE CANDIDATE ONLY!
 145                          */
 146                         Debug( LDAP_DEBUG_ANY,
 147                                 "### %s meta_back_bind: more than one"
 148                                 " candidate is trying to bind...\n",
 149                                 op->o_log_prefix, 0, 0 );
 150                 }
 151
 152                 if ( isroot ) {
 153                         if ( BER_BVISNULL( &mi->mi_targets[ i ].mt_pseudorootdn ) )
 154                         {
 155                                 metasingleconn_t        *msc = &mc->mc_conns[ i ];
 156
 157                                 /* skip the target if no pseudorootdn is provided */
 158                                 if ( !BER_BVISNULL( &msc->msc_bound_ndn ) ) {
 159                                         ch_free( msc->msc_bound_ndn.bv_val );
 160                                         BER_BVZERO( &msc->msc_bound_ndn );
 161                                 }
 162
 163                                 if ( LDAP_BACK_SAVECRED( mi ) &&
 164                                         !BER_BVISNULL( &msc->msc_cred ) )
 165                                 {
 166                                         /* destroy sensitive data */
 167                                         memset( msc->msc_cred.bv_val, 0,
 168                                                 msc->msc_cred.bv_len );
 169                                         ch_free( msc->msc_cred.bv_val );
 170                                         BER_BVZERO( &msc->msc_cred );
 171                                 }
 172
 173                                 continue;
 174                         }
 175
 176                         op2.o_req_dn = mi->mi_targets[ i ].mt_pseudorootdn;
 177                         op2.o_req_ndn = mi->mi_targets[ i ].mt_pseudorootdn;
 178                         op2.orb_cred = mi->mi_targets[ i ].mt_pseudorootpw;
 179                         op2.orb_method = LDAP_AUTH_SIMPLE;
 180                 }
 181
 182                 lerr = meta_back_single_bind( &op2, rs, mc, i );
 183                 if ( lerr != LDAP_SUCCESS ) {
 184                         rs->sr_err = lerr;
 185                         candidates[ i ].sr_tag = META_NOT_CANDIDATE;
 186
 187                         rc = rs->sr_err;
 188                         break;
 189                 }
 190         }
 191
 192         /* must re-insert if local DN changed as result of bind */
 193         if ( rc == LDAP_SUCCESS ) {
 194                 if ( isroot ) {
 195                         mc->mc_authz_target = META_BOUND_ALL;
 196                         ber_dupbv( &op->orb_edn, be_root_dn( op->o_bd ) );
 197                 }
 198
 199                 if ( !dn_match( &op->o_req_ndn, &mc->mc_local_ndn ) ) {
 200                         int             lerr;
 201
 202                         /* wait for all other ops to release the connection */
 203 retry_lock:;
 204                         ldap_pvt_thread_mutex_lock( &mi->mi_conn_mutex );
 205                         if ( mc->mc_refcnt > 1 ) {
 206                                 ldap_pvt_thread_mutex_unlock( &mi->mi_conn_mutex );
 207                                 ldap_pvt_thread_yield();
 208                                 goto retry_lock;
 209                         }
 210
 211                         assert( mc->mc_refcnt == 1 );
 212                         mc = avl_delete( &mi->mi_conntree, (caddr_t)mc,
 213                                 meta_back_conn_cmp );
 214                         assert( mc != NULL );
 215
 216                         ber_bvreplace( &mc->mc_local_ndn, &op->o_req_ndn );
 217                         lerr = avl_insert( &mi->mi_conntree, (caddr_t)mc,
 218                                 meta_back_conn_cmp, meta_back_conn_dup );
 219                         ldap_pvt_thread_mutex_unlock( &mi->mi_conn_mutex );
 220                         if ( lerr == -1 ) {
 221                                 for ( i = 0; i < mi->mi_ntargets; ++i ) {
 222                                         if ( mc->mc_conns[ i ].msc_ld != NULL ) {
 223                                                 meta_clear_one_candidate( &mc->mc_conns[ i ] );
 224                                         }
 225                                 }
 226
 227                                 /* we can do this because mc_refcnt == 1 */
 228                                 mc->mc_refcnt = 0;
 229                                 meta_back_conn_free( mc );
 230                                 mc = NULL;
 231                         }
 232                 }
 233         }
 234
 235         if ( mc != NULL ) {
 236                 meta_back_release_conn( op, mc );
 237         }
 238
 239         /*
 240          * rc is LDAP_SUCCESS if at least one bind succeeded,
 241          * err is the last error that occurred during a bind;
 242          * if at least (and at most?) one bind succeeds, fine.
 243          */
 244         if ( rc != LDAP_SUCCESS ) {
 245
 246                 /*
 247                  * deal with bind failure ...
 248                  */
 249
 250                 /*
 251                  * no target was found within the naming context,
 252                  * so bind must fail with invalid credentials
 253                  */
 254                 if ( rs->sr_err == LDAP_SUCCESS && gotit == 0 ) {
 255                         rs->sr_err = LDAP_INVALID_CREDENTIALS;
 256                 } else {
 257                         rs->sr_err = slap_map_api2result( rs );
 258                 }
 259                 send_ldap_result( op, rs );
 260                 return rs->sr_err;
 261
 262         }
 263
 264         return LDAP_SUCCESS;
 265 }
 266
 267 /*
 268  * meta_back_single_bind
 269  *
 270  * attempts to perform a bind with creds
 271  */
 272 static int
 273 meta_back_single_bind(
 274         Operation               *op,
 275         SlapReply               *rs,
 276         metaconn_t              *mc,
 277         int                     candidate )
 278 {
 279         metainfo_t              *mi = ( metainfo_t * )op->o_bd->be_private;
 280         metatarget_t            *mt = &mi->mi_targets[ candidate ];
 281         struct berval           mdn = BER_BVNULL;
 282         dncookie                dc;
 283         metasingleconn_t        *msc = &mc->mc_conns[ candidate ];
 284         int                     msgid,
 285                                 rebinding = 0;
 286
 287
 288         if ( !BER_BVISNULL( &msc->msc_bound_ndn ) ) {
 289                 ch_free( msc->msc_bound_ndn.bv_val );
 290                 BER_BVZERO( &msc->msc_bound_ndn );
 291         }
 292
 293         if ( LDAP_BACK_SAVECRED( mi ) && !BER_BVISNULL( &msc->msc_cred ) ) {
 294                 /* destroy sensitive data */
 295                 memset( msc->msc_cred.bv_val, 0, msc->msc_cred.bv_len );
 296                 ch_free( msc->msc_cred.bv_val );
 297                 BER_BVZERO( &msc->msc_cred );
 298         }
 299
 300         /*
 301          * Rewrite the bind dn if needed
 302          */
 303         dc.target = mt;
 304         dc.conn = op->o_conn;
 305         dc.rs = rs;
 306         dc.ctx = "bindDN";
 307
 308         if ( ldap_back_dn_massage( &dc, &op->o_req_dn, &mdn ) ) {
 309                 send_ldap_result( op, rs );
 310                 return -1;
 311         }
 312
 313         /* FIXME: this fixes the bind problem right now; we need
 314          * to use the asynchronous version to get the "matched"
 315          * and more in case of failure ... */
 316         /* FIXME: should we check if at least some of the op->o_ctrls
 317          * can/should be passed? */
 318 rebind:;
 319         rs->sr_err = ldap_sasl_bind( msc->msc_ld, mdn.bv_val,
 320                         LDAP_SASL_SIMPLE, &op->orb_cred,
 321                         op->o_ctrls, NULL, &msgid );
 322         if ( rs->sr_err == LDAP_SUCCESS ) {
 323                 LDAPMessage     *res;
 324                 struct timeval  tv;
 325                 int             rc;
 326                 int             nretries = mt->mt_nretries;
 327
 328                 LDAP_BACK_TV_SET( &tv );
 329
 330                 /*
 331                  * handle response!!!
 332                  */
 333 retry:;
 334                 tv.tv_sec = 0;
 335                 tv.tv_usec = META_BIND_TIMEOUT;
 336                 switch ( ldap_result( msc->msc_ld, msgid, 0, &tv, &res ) ) {
 337                 case 0:
 338                         Debug( LDAP_DEBUG_ANY,
 339                                 "%s meta_back_single_bind: "
 340                                 "ldap_result=0 nretries=%d%s\n",
 341                                 op->o_log_prefix, nretries,
 342                                 rebinding ? " rebinding" : "" );
 343
 344                         if ( nretries != META_RETRY_NEVER ) {
 345                                 ldap_pvt_thread_yield();
 346                                 if ( nretries > 0 ) {
 347                                         nretries--;
 348                                 }
 349                                 LDAP_BACK_TV_SET( &tv );
 350                                 goto retry;
 351                         }
 352                         rs->sr_err = LDAP_BUSY;
 353                         if ( rebinding ) {
 354                                 ldap_abandon_ext( msc->msc_ld, msgid, NULL, NULL );
 355                                 break;
 356                         }
 357
 358                         /* FIXME: some times the request times out
 359                          * while the other party is not willing to
 360                          * send a response any more.  Give it a second
 361                          * chance with a freshly bound connection */
 362                         rebinding = 1;
 363                         nretries = mt->mt_nretries;
 364                         /* fallthru */
 365
 366                 case -1:
 367                         ldap_get_option( msc->msc_ld, LDAP_OPT_ERROR_NUMBER,
 368                                         &rs->sr_err );
 369
 370                         if ( rebinding ) {
 371                                 ldap_abandon_ext( msc->msc_ld, msgid, NULL, NULL );
 372                         }
 373
 374                         Debug( LDAP_DEBUG_ANY,
 375                                 "### %s meta_back_single_bind: "
 376                                 "err=%d nretries=%d\n",
 377                                 op->o_log_prefix, rs->sr_err, nretries );
 378
 379                         rc = slap_map_api2result( rs );
 380                         if ( rs->sr_err == LDAP_UNAVAILABLE && nretries != META_RETRY_NEVER ) {
 381                                 ldap_pvt_thread_mutex_lock( &mi->mi_conn_mutex );
 382                                 if ( mc->mc_refcnt == 1 ) {
 383                                         ldap_unbind_ext_s( msc->msc_ld, NULL, NULL );
 384                                         msc->msc_ld = NULL;
 385                                         LDAP_BACK_CONN_ISBOUND_CLEAR( msc );
 386
 387                                         ( void )rewrite_session_delete( mt->mt_rwmap.rwm_rw, op->o_conn );
 388
 389                                         /* mc here must be the regular mc,
 390                                          * reset and ready for init */
 391                                         rc = meta_back_init_one_conn( op, rs,
 392                                                 mt, mc, msc, LDAP_BACK_CONN_ISPRIV( mc ),
 393                                                 candidate == mc->mc_authz_target,
 394                                                 LDAP_BACK_DONTSEND );
 395
 396                                 } else {
 397                                         /* can't do anything about it */
 398                                         rc = 0;
 399                                 }
 400
 401                                 ldap_pvt_thread_mutex_unlock( &mi->mi_conn_mutex );
 402
 403                                 if ( rc ) {
 404                                         if ( nretries > 0 ) {
 405                                                 nretries--;
 406                                         }
 407                                         ldap_pvt_thread_yield();
 408                                         goto rebind;
 409                                 }
 410                         }
 411                         break;
 412
 413                 default:
 414                         rc = ldap_parse_result( msc->msc_ld, res, &rs->sr_err,
 415                                         NULL, NULL, NULL, NULL, 1 );
 416                         if ( rc != LDAP_SUCCESS ) {
 417                                 rs->sr_err = rc;
 418                         }
 419                         break;
 420                 }
 421         }
 422
 423         if ( rs->sr_err != LDAP_SUCCESS ) {
 424                 rs->sr_err = slap_map_api2result( rs );
 425                 goto return_results;
 426         }
 427
 428         ber_bvreplace( &msc->msc_bound_ndn, &op->o_req_dn );
 429         LDAP_BACK_CONN_ISBOUND_SET( msc );
 430         mc->mc_authz_target = candidate;
 431
 432         if ( LDAP_BACK_SAVECRED( mi ) ) {
 433                 ber_bvreplace( &msc->msc_cred, &op->orb_cred );
 434                 ldap_set_rebind_proc( msc->msc_ld, meta_back_rebind_f, msc );
 435         }
 436
 437         if ( mi->mi_cache.ttl != META_DNCACHE_DISABLED
 438                         && op->o_req_ndn.bv_len != 0 )
 439         {
 440                 ( void )meta_dncache_update_entry( &mi->mi_cache,
 441                                 &op->o_req_ndn, candidate );
 442         }
 443
 444 return_results:;
 445         if ( mdn.bv_val != op->o_req_dn.bv_val ) {
 446                 free( mdn.bv_val );
 447         }
 448
 449         return rs->sr_err;
 450 }
 451
 452 /*
 453  * meta_back_single_dobind
 454  */
 455 int
 456 meta_back_single_dobind(
 457         Operation               *op,
 458         SlapReply               *rs,
 459         metaconn_t              *mc,
 460         int                     candidate,
 461         ldap_back_send_t        sendok,
 462         int                     nretries,
 463         int                     dolock )
 464 {
 465         metainfo_t              *mi = ( metainfo_t * )op->o_bd->be_private;
 466         metatarget_t            *mt = &mi->mi_targets[ candidate ];
 467         metasingleconn_t        *msc = &mc->mc_conns[ candidate ];
 468         int                     rc;
 469         static struct berval    cred = BER_BVC( "" );
 470         int                     msgid,
 471                                 rebinding = 0,
 472                                 save_nretries = nretries;
 473
 474         assert( !LDAP_BACK_CONN_ISBOUND( msc ) );
 475
 476         /*
 477          * Otherwise an anonymous bind is performed
 478          * (note: if the target was already bound, the anonymous
 479          * bind clears the previous bind).
 480          */
 481         if ( !BER_BVISNULL( &msc->msc_bound_ndn ) ) {
 482                 ber_memfree( msc->msc_bound_ndn.bv_val );
 483                 BER_BVZERO( &msc->msc_bound_ndn );
 484         }
 485
 486         if ( LDAP_BACK_SAVECRED( mi ) && !BER_BVISNULL( &msc->msc_cred ) ) {
 487                 /* destroy sensitive data */
 488                 memset( msc->msc_cred.bv_val, 0, msc->msc_cred.bv_len );
 489                 ber_memfree( msc->msc_cred.bv_val );
 490                 BER_BVZERO( &msc->msc_cred );
 491         }
 492
 493         /* FIXME: should we check if at least some of the op->o_ctrls
 494          * can/should be passed? */
 495 rebind:;
 496         rc = ldap_sasl_bind( msc->msc_ld, "", LDAP_SASL_SIMPLE, &cred,
 497                         NULL, NULL, &msgid );
 498         if ( rc == LDAP_SUCCESS ) {
 499                 LDAPMessage     *res;
 500                 struct timeval  tv;
 501
 502                 LDAP_BACK_TV_SET( &tv );
 503
 504                 /*
 505                  * handle response!!!
 506                  */
 507 retry:;
 508                 tv.tv_sec = 0;
 509                 tv.tv_usec = META_BIND_TIMEOUT;
 510                 switch ( ldap_result( msc->msc_ld, msgid, 0, &tv, &res ) ) {
 511                 case 0:
 512                         Debug( LDAP_DEBUG_ANY,
 513                                 "%s meta_back_single_dobind: "
 514                                 "ldap_result=0 nretries=%d%s\n",
 515                                 op->o_log_prefix, nretries,
 516                                 rebinding ? " rebinding" : "" );
 517
 518                         if ( nretries != META_RETRY_NEVER ) {
 519                                 ldap_pvt_thread_yield();
 520                                 if ( nretries > 0 ) {
 521                                         nretries--;
 522                                 }
 523                                 LDAP_BACK_TV_SET( &tv );
 524                                 goto retry;
 525                         }
 526
 527                         rc = LDAP_BUSY;
 528                         if ( rebinding ) {
 529                                 ldap_abandon_ext( msc->msc_ld, msgid, NULL, NULL );
 530                                 break;
 531                         }
 532
 533                         /* FIXME: some times the request times out
 534                          * while the other party is not willing to
 535                          * send a response any more.  Give it a second
 536                          * chance with a freshly bound connection */
 537                         rebinding = 1;
 538                         nretries = save_nretries;
 539                         /* fallthru */
 540
 541                 case -1:
 542                         ldap_get_option( msc->msc_ld,
 543                                         LDAP_OPT_ERROR_NUMBER, &rs->sr_err );
 544
 545                         if ( rebinding ) {
 546                                 ldap_abandon_ext( msc->msc_ld, msgid, NULL, NULL );
 547                         }
 548
 549                         Debug( LDAP_DEBUG_ANY,
 550                                 "### %s meta_back_single_dobind: "
 551                                 "err=%d nretries=%d\n",
 552                                 op->o_log_prefix, rs->sr_err, nretries );
 553
 554                         rc = slap_map_api2result( rs );
 555                         if ( rc == LDAP_UNAVAILABLE && nretries != META_RETRY_NEVER ) {
 556                                 if ( dolock ) {
 557                                         ldap_pvt_thread_mutex_lock( &mi->mi_conn_mutex );
 558                                 }
 559
 560                                 if ( mc->mc_refcnt == 1 ) {
 561                                         ldap_unbind_ext_s( msc->msc_ld, NULL, NULL );
 562                                         msc->msc_ld = NULL;
 563                                         LDAP_BACK_CONN_ISBOUND_CLEAR( msc );
 564
 565                                         ( void )rewrite_session_delete( mt->mt_rwmap.rwm_rw, op->o_conn );
 566
 567                                         /* mc here must be the regular mc,
 568                                          * reset and ready for init */
 569                                         rc = meta_back_init_one_conn( op, rs,
 570                                                 mt, mc, msc,
 571                                                 LDAP_BACK_CONN_ISPRIV( mc ),
 572                                                 candidate == mc->mc_authz_target,
 573                                                 LDAP_BACK_DONTSEND );
 574
 575
 576                                 } else {
 577                                         /* can't do anything about it */
 578                                         rc = LDAP_UNAVAILABLE;
 579                                 }
 580
 581                                 if ( dolock ) {
 582                                         ldap_pvt_thread_mutex_unlock( &mi->mi_conn_mutex );
 583                                 }
 584
 585                                 if ( rc == LDAP_SUCCESS ) {
 586                                         ldap_pvt_thread_yield();
 587                                         if ( nretries > 0 ) {
 588                                                 nretries--;
 589                                         }
 590                                         goto rebind;
 591                                 }
 592                         }
 593                         break;
 594
 595                 default:
 596                         rc = ldap_parse_result( msc->msc_ld, res, &rs->sr_err,
 597                                         NULL, NULL, NULL, NULL, 1 );
 598                         if ( rc == LDAP_SUCCESS ) {
 599                                 rc = slap_map_api2result( rs );
 600                         }
 601                         break;
 602                 }
 603
 604         } else {
 605                 rs->sr_err = rc;
 606                 rc = slap_map_api2result( rs );
 607         }
 608
 609         rs->sr_err = rc;
 610         if ( rc != LDAP_SUCCESS && ( sendok & LDAP_BACK_SENDERR ) ) {
 611                 send_ldap_result( op, rs );
 612         }
 613
 614         return rc;
 615 }
 616
 617 /*
 618  * meta_back_dobind
 619  */
 620 int
 621 meta_back_dobind(
 622         Operation               *op,
 623         SlapReply               *rs,
 624         metaconn_t              *mc,
 625         ldap_back_send_t        sendok )
 626 {
 627         metainfo_t              *mi = ( metainfo_t * )op->o_bd->be_private;
 628
 629         int                     bound = 0,
 630                                 i,
 631                                 isroot = 0;
 632
 633         SlapReply               *candidates = meta_back_candidates_get( op );
 634
 635         if ( be_isroot( op ) ) {
 636                 isroot = 1;
 637         }
 638
 639         Debug( LDAP_DEBUG_TRACE,
 640                 "%s meta_back_dobind: conn=%ld%s\n",
 641                 op->o_log_prefix,
 642                 LDAP_BACK_PCONN_ID( mc->mc_conn ),
 643                 isroot ? " (isroot)" : "" );
 644
 645         ldap_pvt_thread_mutex_lock( &mc->mc_mutex );
 646
 647         /*
 648          * all the targets are bound as pseudoroot
 649          */
 650         if ( mc->mc_authz_target == META_BOUND_ALL ) {
 651                 bound = 1;
 652                 goto done;
 653         }
 654
 655         for ( i = 0; i < mi->mi_ntargets; i++ ) {
 656                 metatarget_t            *mt = &mi->mi_targets[ i ];
 657                 metasingleconn_t        *msc = &mc->mc_conns[ i ];
 658                 int                     rc;
 659                 char                    *rootdn = NULL;
 660
 661                 /*
 662                  * Not a candidate
 663                  */
 664                 if ( candidates[ i ].sr_tag != META_CANDIDATE ) {
 665                         continue;
 666                 }
 667
 668                 assert( msc->msc_ld != NULL );
 669
 670                 /*
 671                  * If the target is already bound it is skipped
 672                  */
 673                 if ( LDAP_BACK_CONN_ISBOUND( msc ) || LDAP_BACK_CONN_ISANON( msc ) ) {
 674                         ++bound;
 675                         continue;
 676                 }
 677
 678                 if ( isroot && !BER_BVISNULL( &mi->mi_targets[ i ].mt_pseudorootdn ) )
 679                 {
 680                         Operation       op2 = *op;
 681
 682                         op2.o_tag = LDAP_REQ_BIND;
 683                         op2.o_req_dn = mi->mi_targets[ i ].mt_pseudorootdn;
 684                         op2.o_req_ndn = mi->mi_targets[ i ].mt_pseudorootdn;
 685                         op2.orb_cred = mi->mi_targets[ i ].mt_pseudorootpw;
 686                         op2.orb_method = LDAP_AUTH_SIMPLE;
 687
 688                         rootdn = mi->mi_targets[ i ].mt_pseudorootdn.bv_val;
 689
 690                         rc = meta_back_single_bind( &op2, rs, mc, i );
 691
 692                 } else {
 693                         rc = meta_back_single_dobind( op, rs, mc, i,
 694                                 LDAP_BACK_DONTSEND, mt->mt_nretries, 1 );
 695                 }
 696
 697                 if ( rc != LDAP_SUCCESS ) {
 698                         char            buf[ SLAP_TEXT_BUFLEN ];
 699
 700                         snprintf( buf, sizeof( buf ),
 701                                 "meta_back_dobind[%d]: (%s) err=%d.",
 702                                 i, rootdn ? rootdn : "anonymous", rc );
 703                         Debug( LDAP_DEBUG_ANY,
 704                                 "%s %s\n",
 705                                 op->o_log_prefix, buf, 0 );
 706
 707                         /*
 708                          * null cred bind should always succeed
 709                          * as anonymous, so a failure means
 710                          * the target is no longer candidate possibly
 711                          * due to technical reasons (remote host down?)
 712                          * so better clear the handle
 713                          */
 714                         /* leave the target candidate, but record the error for later use */
 715                         candidates[ i ].sr_err = rc;
 716                         if ( META_BACK_ONERR_STOP( mi ) ) {
 717                                 bound = 0;
 718                                 goto done;
 719                         }
 720                         continue;
 721                 } /* else */
 722
 723                 Debug( LDAP_DEBUG_TRACE,
 724                         "%s meta_back_dobind[%d]: "
 725                         "(%s)\n",
 726                         op->o_log_prefix, i,
 727                         rootdn ? rootdn : "anonymous" );
 728
 729                 if ( rootdn ) {
 730                         LDAP_BACK_CONN_ISBOUND_SET( msc );
 731                 } else {
 732                         LDAP_BACK_CONN_ISANON_SET( msc );
 733                 }
 734                 ++bound;
 735         }
 736
 737 done:;
 738         ldap_pvt_thread_mutex_unlock( &mc->mc_mutex );
 739
 740         Debug( LDAP_DEBUG_TRACE,
 741                 "%s meta_back_dobind: conn=%ld bound=%d\n",
 742                 op->o_log_prefix, LDAP_BACK_PCONN_ID( mc->mc_conn ), bound );
 743
 744         if ( bound == 0 ) {
 745                 meta_back_release_conn( op, mc );
 746
 747                 if ( sendok & LDAP_BACK_SENDERR ) {
 748                         if ( rs->sr_err == LDAP_SUCCESS ) {
 749                                 rs->sr_err = LDAP_BUSY;
 750                         }
 751                         send_ldap_result( op, rs );
 752                 }
 753         }
 754
 755         return( bound > 0 );
 756 }
 757
 758 /*
 759  * meta_back_default_rebind
 760  *
 761  * This is a callback used for chasing referrals using the same
 762  * credentials as the original user on this session.
 763  */
 764 static int
 765 meta_back_default_rebind(
 766         LDAP                    *ld,
 767         LDAP_CONST char         *url,
 768         ber_tag_t               request,
 769         ber_int_t               msgid,
 770         void                    *params )
 771 {
 772         metasingleconn_t        *msc = ( metasingleconn_t * )params;
 773
 774         return ldap_sasl_bind_s( ld, msc->msc_bound_ndn.bv_val,
 775                         LDAP_SASL_SIMPLE, &msc->msc_cred,
 776                         NULL, NULL, NULL );
 777 }
 778
 779 /*
 780  * FIXME: error return must be handled in a cleaner way ...
 781  */
 782 int
 783 meta_back_op_result(
 784         metaconn_t      *mc,
 785         Operation       *op,
 786         SlapReply       *rs,
 787         int             candidate )
 788 {
 789         metainfo_t              *mi = ( metainfo_t * )op->o_bd->be_private;
 790
 791         int                     i,
 792                                 rerr = LDAP_SUCCESS;
 793         char                    *rmsg = NULL,
 794                                 *rmatch = NULL;
 795         const char              *save_rmsg = NULL,
 796                                 *save_rmatch = NULL;
 797         void                    *rmatch_ctx = NULL;
 798
 799         if ( candidate != META_TARGET_NONE ) {
 800                 metasingleconn_t        *msc = &mc->mc_conns[ candidate ];
 801
 802                 rs->sr_err = LDAP_SUCCESS;
 803
 804                 ldap_get_option( msc->msc_ld, LDAP_OPT_ERROR_NUMBER, &rs->sr_err );
 805                 if ( rs->sr_err != LDAP_SUCCESS ) {
 806                         /*
 807                          * better check the type of error. In some cases
 808                          * (search ?) it might be better to return a
 809                          * success if at least one of the targets gave
 810                          * positive result ...
 811                          */
 812                         ldap_get_option( msc->msc_ld,
 813                                         LDAP_OPT_ERROR_STRING, &rmsg );
 814                         if ( rmsg != NULL && rmsg[ 0 ] == '\0' ) {
 815                                 ldap_memfree( rmsg );
 816                                 rmsg = NULL;
 817                         }
 818
 819                         ldap_get_option( msc->msc_ld,
 820                                         LDAP_OPT_MATCHED_DN, &rmatch );
 821                         if ( rmatch != NULL && rmatch[ 0 ] == '\0' ) {
 822                                 ldap_memfree( rmatch );
 823                                 rmatch = NULL;
 824                         }
 825
 826                         rerr = rs->sr_err = slap_map_api2result( rs );
 827
 828                         Debug(LDAP_DEBUG_ANY,
 829                                         "==> meta_back_op_result: target"
 830                                         " <%d> sending msg \"%s\""
 831                                         " (matched \"%s\")\n",
 832                                         candidate, ( rmsg ? rmsg : "" ),
 833                                         ( rmatch ? rmatch : "" ) );
 834                 }
 835
 836         } else {
 837                 for ( i = 0; i < mi->mi_ntargets; i++ ) {
 838                         metasingleconn_t        *msc = &mc->mc_conns[ i ];
 839                         char                    *msg = NULL;
 840                         char                    *match = NULL;
 841
 842                         rs->sr_err = LDAP_SUCCESS;
 843
 844                         ldap_get_option( msc->msc_ld, LDAP_OPT_ERROR_NUMBER, &rs->sr_err );
 845                         if ( rs->sr_err != LDAP_SUCCESS ) {
 846                                 /*
 847                                  * better check the type of error. In some cases
 848                                  * (search ?) it might be better to return a
 849                                  * success if at least one of the targets gave
 850                                  * positive result ...
 851                                  */
 852                                 ldap_get_option( msc->msc_ld,
 853                                                 LDAP_OPT_ERROR_STRING, &msg );
 854                                 if ( msg != NULL && msg[ 0 ] == '\0' ) {
 855                                         ldap_memfree( msg );
 856                                         msg = NULL;
 857                                 }
 858
 859                                 ldap_get_option( msc->msc_ld,
 860                                                 LDAP_OPT_MATCHED_DN, &match );
 861                                 if ( match != NULL && match[ 0 ] == '\0' ) {
 862                                         ldap_memfree( match );
 863                                         match = NULL;
 864                                 }
 865
 866                                 rs->sr_err = slap_map_api2result( rs );
 867
 868                                 Debug(LDAP_DEBUG_ANY,
 869                                                 "==> meta_back_op_result: target"
 870                                                 " <%d> sending msg \"%s\""
 871                                                 " (matched \"%s\")\n",
 872                                                 i, ( msg ? msg : "" ),
 873                                                 ( match ? match : "" ) );
 874
 875                                 /*
 876                                  * FIXME: need to rewrite "match" (need rwinfo)
 877                                  */
 878                                 switch ( rs->sr_err ) {
 879                                 default:
 880                                         rerr = rs->sr_err;
 881                                         if ( msg != NULL ) {
 882                                                 if ( rmsg ) {
 883                                                         ldap_memfree( rmsg );
 884                                                 }
 885                                                 rmsg = msg;
 886                                                 msg = NULL;
 887                                         }
 888                                         if ( match != NULL ) {
 889                                                 if ( rmatch ) {
 890                                                         ldap_memfree( rmatch );
 891                                                 }
 892                                                 rmatch = match;
 893                                                 match = NULL;
 894                                         }
 895                                         break;
 896                                 }
 897
 898                                 if ( msg ) {
 899                                         ldap_memfree( msg );
 900                                 }
 901
 902                                 if ( match ) {
 903                                         ldap_memfree( match );
 904                                 }
 905                         }
 906                 }
 907         }
 908
 909         rs->sr_err = rerr;
 910         if ( rmsg != NULL ) {
 911                 save_rmsg = rs->sr_text;
 912                 rs->sr_text = rmsg;
 913         }
 914         if ( rmatch != NULL ) {
 915                 struct berval   dn, pdn;
 916
 917                 ber_str2bv( rmatch, 0, 0, &dn );
 918                 if ( dnPretty( NULL, &dn, &pdn, op->o_tmpmemctx ) == LDAP_SUCCESS ) {
 919                         ldap_memfree( rmatch );
 920                         rmatch_ctx = op->o_tmpmemctx;
 921                         rmatch = pdn.bv_val;
 922                 }
 923                 save_rmatch = rs->sr_matched;
 924                 rs->sr_matched = rmatch;
 925         }
 926         send_ldap_result( op, rs );
 927         if ( rmsg != NULL ) {
 928                 ber_memfree( rmsg );
 929                 rs->sr_text = save_rmsg;
 930         }
 931         if ( rmatch != NULL ) {
 932                 ber_memfree_x( rmatch, rmatch_ctx );
 933                 rs->sr_matched = save_rmatch;
 934         }
 935
 936         return ( ( rerr == LDAP_SUCCESS ) ? 0 : -1 );
 937 }
 938