git.sur5r.net Git - openldap/blob - servers/slapd/syncrepl.c

   1 /* syncrepl.c -- Replication Engine which uses the LDAP Sync protocol */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2003-2005 The OpenLDAP Foundation.
   6  * Portions Copyright 2003 by IBM Corporation.
   7  * Portions Copyright 2003 by Howard Chu, Symas Corporation.
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted only as authorized by the OpenLDAP
  12  * Public License.
  13  *
  14  * A copy of this license is available in the file LICENSE in the
  15  * top-level directory of the distribution or, alternatively, at
  16  * <http://www.OpenLDAP.org/license.html>.
  17  */
  18
  19 #include "portable.h"
  20
  21 #include <stdio.h>
  22
  23 #include <ac/string.h>
  24 #include <ac/socket.h>
  25
  26 #include "lutil.h"
  27 #include "slap.h"
  28 #include "lutil_ldap.h"
  29
  30 #include "ldap_rq.h"
  31
  32 /* FIXME: for ldap_ld_free() */
  33 #undef ldap_debug
  34 #include "../../libraries/libldap/ldap-int.h"
  35
  36 static int syncuuid_cmp( const void *, const void * );
  37 static void avl_ber_bvfree( void * );
  38 static void syncrepl_del_nonpresent( Operation *, syncinfo_t *, BerVarray );
  39
  40 /* callback functions */
  41 static int dn_callback( struct slap_op *, struct slap_rep * );
  42 static int nonpresent_callback( struct slap_op *, struct slap_rep * );
  43 static int null_callback( struct slap_op *, struct slap_rep * );
  44
  45 static AttributeDescription *sync_descs[4];
  46
  47 void
  48 init_syncrepl(syncinfo_t *si)
  49 {
  50         int i, j, k, l, n;
  51         char **attrs, **exattrs;
  52
  53         if ( !sync_descs[0] ) {
  54                 sync_descs[0] = slap_schema.si_ad_objectClass;
  55                 sync_descs[1] = slap_schema.si_ad_structuralObjectClass;
  56                 sync_descs[2] = slap_schema.si_ad_entryCSN;
  57                 sync_descs[3] = NULL;
  58         }
  59
  60         if ( si->si_allattrs && si->si_allopattrs )
  61                 attrs = NULL;
  62         else
  63                 attrs = anlist2attrs( si->si_anlist );
  64
  65         if ( attrs ) {
  66                 if ( si->si_allattrs ) {
  67                         i = 0;
  68                         while ( attrs[i] ) {
  69                                 if ( !is_at_operational( at_find( attrs[i] ))) {
  70                                         for ( j = i; attrs[j] != NULL; j++ ) {
  71                                                 if ( j == i )
  72                                                         ch_free( attrs[i] );
  73                                                 attrs[j] = attrs[j+1];
  74                                         }
  75                                 } else {
  76                                         i++;
  77                                 }
  78                         }
  79                         attrs = ( char ** ) ch_realloc( attrs, (i + 2)*sizeof( char * ) );
  80                         attrs[i] = ch_strdup("*");
  81                         attrs[i + 1] = NULL;
  82
  83                 } else if ( si->si_allopattrs ) {
  84                         i = 0;
  85                         while ( attrs[i] ) {
  86                                 if ( is_at_operational( at_find( attrs[i] ))) {
  87                                         for ( j = i; attrs[j] != NULL; j++ ) {
  88                                                 if ( j == i )
  89                                                         ch_free( attrs[i] );
  90                                                 attrs[j] = attrs[j+1];
  91                                         }
  92                                 } else {
  93                                         i++;
  94                                 }
  95                         }
  96                         attrs = ( char ** ) ch_realloc( attrs, (i + 2)*sizeof( char * ) );
  97                         attrs[i] = ch_strdup("+");
  98                         attrs[i + 1] = NULL;
  99                 }
 100
 101                 for ( i = 0; sync_descs[i] != NULL; i++ ) {
 102                         j = 0;
 103                         while ( attrs[j] ) {
 104                                 if ( !strcmp( attrs[j], sync_descs[i]->ad_cname.bv_val )) {
 105                                         for ( k = j; attrs[k] != NULL; k++ ) {
 106                                                 if ( k == j )
 107                                                         ch_free( attrs[k] );
 108                                                 attrs[k] = attrs[k+1];
 109                                         }
 110                                 } else {
 111                                         j++;
 112                                 }
 113                         }
 114                 }
 115
 116                 for ( n = 0; attrs[ n ] != NULL; n++ ) /* empty */;
 117
 118                 if ( si->si_allopattrs ) {
 119                         attrs = ( char ** ) ch_realloc( attrs, (n + 2)*sizeof( char * ));
 120                 } else {
 121                         attrs = ( char ** ) ch_realloc( attrs, (n + 4)*sizeof( char * ));
 122                 }
 123
 124                 if ( attrs == NULL ) {
 125                         Debug( LDAP_DEBUG_ANY, "out of memory\n", 0,0,0 );
 126                 }
 127
 128                 /* Add Attributes */
 129                 if ( si->si_allopattrs ) {
 130                         attrs[n++] = ch_strdup( sync_descs[0]->ad_cname.bv_val );
 131                 } else {
 132                         for ( i = 0; sync_descs[ i ] != NULL; i++ ) {
 133                                 attrs[ n++ ] = ch_strdup ( sync_descs[i]->ad_cname.bv_val );
 134                         }
 135                 }
 136                 attrs[ n ] = NULL;
 137
 138         } else {
 139
 140                 i = 0;
 141                 if ( si->si_allattrs == si->si_allopattrs ) {
 142                         attrs = (char**) ch_malloc( 3 * sizeof(char*) );
 143                         attrs[i++] = ch_strdup( "*" );
 144                         attrs[i++] = ch_strdup( "+" );
 145                 } else if ( si->si_allattrs && !si->si_allopattrs ) {
 146                         for ( n = 0; sync_descs[ n ] != NULL; n++ ) ;
 147                         attrs = (char**) ch_malloc( (n+1)* sizeof(char*) );
 148                         attrs[i++] = ch_strdup( "*" );
 149                         for ( j = 1; sync_descs[ j ] != NULL; j++ ) {
 150                                 attrs[i++] = ch_strdup ( sync_descs[j]->ad_cname.bv_val );
 151                         }
 152                 } else if ( !si->si_allattrs && si->si_allopattrs ) {
 153                         attrs = (char**) ch_malloc( 3 * sizeof(char*) );
 154                         attrs[i++] = ch_strdup( "+" );
 155                         attrs[i++] = ch_strdup( sync_descs[0]->ad_cname.bv_val );
 156                 }
 157                 attrs[i] = NULL;
 158         }
 159
 160         si->si_attrs = attrs;
 161
 162         exattrs = anlist2attrs( si->si_exanlist );
 163
 164         if ( exattrs ) {
 165                 for ( n = 0; exattrs[n] != NULL; n++ ) ;
 166
 167                 for ( i = 0; sync_descs[i] != NULL; i++ ) {
 168                         j = 0;
 169                         while ( exattrs[j] != NULL ) {
 170                                 if ( !strcmp( exattrs[j], sync_descs[i]->ad_cname.bv_val )) {
 171                                         for ( k = j; exattrs[k] != NULL; k++ ) {
 172                                                 if ( k == j )
 173                                                         ch_free( exattrs[k] );
 174                                                 exattrs[k] = exattrs[k+1];
 175                                         }
 176                                 } else {
 177                                         j++;
 178                                 }
 179                         }
 180                 }
 181
 182                 for ( i = 0; exattrs[i] != NULL; i++ ) {
 183                         for ( j = 0; si->si_anlist[j].an_name.bv_val; j++ ) {
 184                                 ObjectClass     *oc;
 185                                 if ( ( oc = si->si_anlist[j].an_oc ) ) {
 186                                         k = 0;
 187                                         while ( oc->soc_required[k] ) {
 188                                                 if ( !strcmp( exattrs[i],
 189                                                          oc->soc_required[k]->sat_cname.bv_val )) {
 190                                                         for ( l = i; exattrs[l]; l++ ) {
 191                                                                 if ( l == i )
 192                                                                         ch_free( exattrs[i] );
 193                                                                 exattrs[l] = exattrs[l+1];
 194                                                         }
 195                                                 } else {
 196                                                         k++;
 197                                                 }
 198                                         }
 199                                 }
 200                         }
 201                 }
 202
 203                 for ( i = 0; exattrs[i] != NULL; i++ ) ;
 204
 205                 if ( i != n )
 206                         exattrs = (char **) ch_realloc( exattrs, (i + 1)*sizeof(char *));
 207         }
 208
 209         si->si_exattrs = exattrs;
 210 }
 211
 212 static int
 213 ldap_sync_search(
 214         syncinfo_t *si,
 215         void *ctx )
 216 {
 217         BerElementBuffer berbuf;
 218         BerElement *ber = (BerElement *)&berbuf;
 219         LDAPControl c[2], *ctrls[3];
 220         struct timeval timeout;
 221         ber_int_t       msgid;
 222         int rc;
 223
 224         /* setup LDAP SYNC control */
 225         ber_init2( ber, NULL, LBER_USE_DER );
 226         ber_set_option( ber, LBER_OPT_BER_MEMCTX, &ctx );
 227
 228         if ( !BER_BVISNULL( &si->si_syncCookie.octet_str ) )
 229         {
 230                 ber_printf( ber, "{eO}",
 231                         abs(si->si_type),
 232                         &si->si_syncCookie.octet_str );
 233         } else {
 234                 ber_printf( ber, "{e}",
 235                         abs(si->si_type) );
 236         }
 237
 238         if ( (rc = ber_flatten2( ber, &c[0].ldctl_value, 0 )) == LBER_ERROR ) {
 239                 ber_free_buf( ber );
 240                 return rc;
 241         }
 242
 243         c[0].ldctl_oid = LDAP_CONTROL_SYNC;
 244         c[0].ldctl_iscritical = si->si_type < 0;
 245         ctrls[0] = &c[0];
 246
 247         if ( !BER_BVISNULL( &si->si_bindconf.sb_authzId ) ) {
 248                 c[1].ldctl_oid = LDAP_CONTROL_PROXY_AUTHZ;
 249                 c[1].ldctl_value = si->si_bindconf.sb_authzId;
 250                 c[1].ldctl_iscritical = 1;
 251                 ctrls[1] = &c[1];
 252                 ctrls[2] = NULL;
 253         } else {
 254                 ctrls[1] = NULL;
 255         }
 256
 257         timeout.tv_sec = si->si_tlimit;
 258         timeout.tv_usec = 0;
 259
 260         rc = ldap_search_ext( si->si_ld, si->si_base.bv_val, si->si_scope,
 261                 si->si_filterstr.bv_val, si->si_attrs, si->si_attrsonly,
 262                 ctrls, NULL, si->si_tlimit > 0 ? &timeout : NULL,
 263                 si->si_slimit, &msgid );
 264         ber_free_buf( ber );
 265         return rc;
 266 }
 267
 268 static int
 269 do_syncrep1(
 270         Operation *op,
 271         syncinfo_t *si )
 272 {
 273         int     rc;
 274         int cmdline_cookie_found = 0;
 275
 276         struct sync_cookie      *sc = NULL;
 277         struct berval   *psub;
 278 #ifdef HAVE_TLS
 279         void    *ssl;
 280 #endif
 281
 282         psub = &si->si_be->be_nsuffix[0];
 283
 284         /* Init connection to master */
 285         rc = ldap_initialize( &si->si_ld, si->si_provideruri.bv_val );
 286         if ( rc != LDAP_SUCCESS ) {
 287                 Debug( LDAP_DEBUG_ANY,
 288                         "do_syncrep1: ldap_initialize failed (%s)\n",
 289                         si->si_provideruri.bv_val, 0, 0 );
 290                 return rc;
 291         }
 292
 293         op->o_protocol = LDAP_VERSION3;
 294         ldap_set_option( si->si_ld, LDAP_OPT_PROTOCOL_VERSION, &op->o_protocol );
 295
 296         /* Bind to master */
 297
 298         if ( si->si_bindconf.sb_tls ) {
 299                 rc = ldap_start_tls_s( si->si_ld, NULL, NULL );
 300                 if( rc != LDAP_SUCCESS ) {
 301                         Debug( LDAP_DEBUG_ANY,
 302                                 "%s: ldap_start_tls failed (%d)\n",
 303                                 si->si_bindconf.sb_tls == SB_TLS_CRITICAL ? "Error" : "Warning",
 304                                 rc, 0 );
 305                         if( si->si_bindconf.sb_tls == SB_TLS_CRITICAL ) goto done;
 306                 }
 307         }
 308
 309         if ( si->si_bindconf.sb_method == LDAP_AUTH_SASL ) {
 310 #ifdef HAVE_CYRUS_SASL
 311                 void *defaults;
 312
 313                 if ( si->si_bindconf.sb_secprops != NULL ) {
 314                         rc = ldap_set_option( si->si_ld,
 315                                 LDAP_OPT_X_SASL_SECPROPS, si->si_bindconf.sb_secprops);
 316
 317                         if( rc != LDAP_OPT_SUCCESS ) {
 318                                 Debug( LDAP_DEBUG_ANY, "Error: ldap_set_option "
 319                                         "(%s,SECPROPS,\"%s\") failed!\n",
 320                                         si->si_provideruri.bv_val, si->si_bindconf.sb_secprops, 0 );
 321                                 goto done;
 322                         }
 323                 }
 324
 325                 defaults = lutil_sasl_defaults( si->si_ld, si->si_bindconf.sb_saslmech,
 326                         si->si_bindconf.sb_realm, si->si_bindconf.sb_authcId,
 327                         si->si_bindconf.sb_cred.bv_val, si->si_bindconf.sb_authzId.bv_val );
 328
 329                 rc = ldap_sasl_interactive_bind_s( si->si_ld,
 330                                 si->si_bindconf.sb_binddn.bv_val,
 331                                 si->si_bindconf.sb_saslmech,
 332                                 NULL, NULL,
 333                                 LDAP_SASL_QUIET,
 334                                 lutil_sasl_interact,
 335                                 defaults );
 336
 337                 lutil_sasl_freedefs( defaults );
 338
 339                 /* FIXME: different error behaviors according to
 340                  *      1) return code
 341                  *      2) on err policy : exit, retry, backoff ...
 342                  */
 343                 if ( rc != LDAP_SUCCESS ) {
 344                         Debug( LDAP_DEBUG_ANY, "do_syncrep1: "
 345                                 "ldap_sasl_interactive_bind_s failed (%d)\n",
 346                                 rc, 0, 0 );
 347
 348                         /* FIXME (see above comment) */
 349                         /* if Kerberos credentials cache is not active, retry */
 350                         if ( strcmp( si->si_bindconf.sb_saslmech, "GSSAPI" ) == 0 &&
 351                                 rc == LDAP_LOCAL_ERROR )
 352                         {
 353                                 rc = LDAP_SERVER_DOWN;
 354                         }
 355
 356                         goto done;
 357                 }
 358 #else /* HAVE_CYRUS_SASL */
 359                 /* Should never get here, we trapped this at config time */
 360                 assert(0);
 361                 fprintf( stderr, "not compiled with SASL support\n" );
 362                 rc = LDAP_OTHER;
 363                 goto done;
 364 #endif
 365
 366         } else if ( si->si_bindconf.sb_method == LDAP_AUTH_SIMPLE ) {
 367                 rc = ldap_sasl_bind_s( si->si_ld,
 368                         si->si_bindconf.sb_binddn.bv_val, LDAP_SASL_SIMPLE,
 369                         &si->si_bindconf.sb_cred, NULL, NULL, NULL );
 370                 if ( rc != LDAP_SUCCESS ) {
 371                         Debug( LDAP_DEBUG_ANY, "do_syncrep1: "
 372                                 "ldap_sasl_bind_s failed (%d)\n", rc, 0, 0 );
 373                         goto done;
 374                 }
 375         }
 376
 377         /* Set SSF to strongest of TLS, SASL SSFs */
 378         op->o_sasl_ssf = 0;
 379         op->o_tls_ssf = 0;
 380         op->o_transport_ssf = 0;
 381 #ifdef HAVE_TLS
 382         if ( ldap_get_option( si->si_ld, LDAP_OPT_X_TLS_SSL_CTX, &ssl )
 383                 == LDAP_SUCCESS && ssl != NULL )
 384         {
 385                 op->o_tls_ssf = ldap_pvt_tls_get_strength( ssl );
 386         }
 387 #endif /* HAVE_TLS */
 388         ldap_get_option( si->si_ld, LDAP_OPT_X_SASL_SSF, &op->o_sasl_ssf );
 389         op->o_ssf = ( op->o_sasl_ssf > op->o_tls_ssf )
 390                 ?  op->o_sasl_ssf : op->o_tls_ssf;
 391
 392
 393         if ( BER_BVISNULL( &si->si_syncCookie.octet_str )) {
 394                 /* get contextCSN shadow replica from database */
 395                 BerVarray csn = NULL;
 396
 397                 assert( si->si_rid < 1000 );
 398                 op->o_req_ndn = op->o_bd->be_nsuffix[0];
 399                 op->o_req_dn = op->o_req_ndn;
 400
 401                 /* try to read stored contextCSN */
 402                 backend_attribute( op, NULL, &op->o_req_ndn,
 403                         slap_schema.si_ad_contextCSN, &csn, ACL_READ );
 404                 if ( csn ) {
 405                         ch_free( si->si_syncCookie.ctxcsn.bv_val );
 406                         ber_dupbv( &si->si_syncCookie.ctxcsn, csn );
 407                         ber_bvarray_free_x( csn, op->o_tmpmemctx );
 408                 }
 409
 410                 si->si_syncCookie.rid = si->si_rid;
 411
 412                 LDAP_STAILQ_FOREACH( sc, &slap_sync_cookie, sc_next ) {
 413                         if ( si->si_rid == sc->rid ) {
 414                                 cmdline_cookie_found = 1;
 415                                 break;
 416                         }
 417                 }
 418
 419                 if ( cmdline_cookie_found ) {
 420                         /* cookie is supplied in the command line */
 421
 422                         LDAP_STAILQ_REMOVE( &slap_sync_cookie, sc, sync_cookie, sc_next );
 423
 424                         if ( BER_BVISNULL( &sc->ctxcsn ) ) {
 425                                 /* if cmdline cookie does not have ctxcsn */
 426                                 /* component, set it to an initial value */
 427                                 slap_init_sync_cookie_ctxcsn( sc );
 428                         }
 429                         slap_sync_cookie_free( &si->si_syncCookie, 0 );
 430                         slap_dup_sync_cookie( &si->si_syncCookie, sc );
 431                         slap_sync_cookie_free( sc, 1 );
 432                 }
 433
 434                 slap_compose_sync_cookie( NULL, &si->si_syncCookie.octet_str,
 435                         &si->si_syncCookie.ctxcsn, si->si_syncCookie.rid );
 436         }
 437
 438         rc = ldap_sync_search( si, op->o_tmpmemctx );
 439
 440         if( rc != LDAP_SUCCESS ) {
 441                 Debug( LDAP_DEBUG_ANY, "do_syncrep1: "
 442                         "ldap_search_ext: %s (%d)\n", ldap_err2string( rc ), rc, 0 );
 443         }
 444
 445 done:
 446         if ( rc ) {
 447                 if ( si->si_ld ) {
 448                         ldap_unbind_ext( si->si_ld, NULL, NULL );
 449                         si->si_ld = NULL;
 450                 }
 451         }
 452
 453         return rc;
 454 }
 455
 456 static int
 457 do_syncrep2(
 458         Operation *op,
 459         syncinfo_t *si )
 460 {
 461         LDAPControl     **rctrls = NULL;
 462         LDAPControl     *rctrlp;
 463
 464         BerElementBuffer berbuf;
 465         BerElement      *ber = (BerElement *)&berbuf;
 466
 467         LDAPMessage     *res = NULL;
 468         LDAPMessage     *msg = NULL;
 469
 470         char            *retoid = NULL;
 471         struct berval   *retdata = NULL;
 472
 473         Entry           *entry = NULL;
 474
 475         int             syncstate;
 476         struct berval   syncUUID = BER_BVNULL;
 477         struct sync_cookie      syncCookie = { 0 };
 478         struct sync_cookie      syncCookie_req = { 0 };
 479         struct berval           cookie = BER_BVNULL;
 480
 481         int     rc, err, i;
 482         ber_len_t       len;
 483
 484         int rc_efree = 1;
 485
 486         struct berval   *psub;
 487         Modifications   *modlist = NULL;
 488
 489         const char              *text;
 490         int                             match;
 491
 492         struct timeval *tout_p = NULL;
 493         struct timeval tout = { 0, 0 };
 494
 495         int             refreshDeletes = 0;
 496         int             refreshDone = 1;
 497         BerVarray syncUUIDs = NULL;
 498         ber_tag_t si_tag;
 499
 500         if ( slapd_shutdown ) {
 501                 rc = -2;
 502                 goto done;
 503         }
 504
 505         ber_init2( ber, NULL, LBER_USE_DER );
 506         ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
 507
 508         Debug( LDAP_DEBUG_TRACE, "=>do_syncrep2\n", 0, 0, 0 );
 509
 510         psub = &si->si_be->be_nsuffix[0];
 511
 512         slap_dup_sync_cookie( &syncCookie_req, &si->si_syncCookie );
 513
 514         if ( abs(si->si_type) == LDAP_SYNC_REFRESH_AND_PERSIST ) {
 515                 tout_p = &tout;
 516         } else {
 517                 tout_p = NULL;
 518         }
 519
 520         while (( rc = ldap_result( si->si_ld, LDAP_RES_ANY, LDAP_MSG_ONE,
 521                 tout_p, &res )) > 0 )
 522         {
 523                 if ( slapd_shutdown ) {
 524                         rc = -2;
 525                         goto done;
 526                 }
 527                 for( msg = ldap_first_message( si->si_ld, res );
 528                         msg != NULL;
 529                         msg = ldap_next_message( si->si_ld, msg ) )
 530                 {
 531                         if ( slapd_shutdown ) {
 532                                 rc = -2;
 533                                 goto done;
 534                         }
 535                         switch( ldap_msgtype( msg ) ) {
 536                         case LDAP_RES_SEARCH_ENTRY:
 537                                 ldap_get_entry_controls( si->si_ld, msg, &rctrls );
 538                                 /* we can't work without the control */
 539                                 if ( !rctrls ) {
 540                                         Debug( LDAP_DEBUG_ANY, "do_syncrep2: "
 541                                                 "got search entry without "
 542                                                 "control\n", 0, 0, 0 );
 543                                         rc = -1;
 544                                         goto done;
 545                                 }
 546                                 rctrlp = *rctrls;
 547                                 ber_init2( ber, &rctrlp->ldctl_value, LBER_USE_DER );
 548                                 ber_scanf( ber, "{em" /*"}"*/, &syncstate, &syncUUID );
 549                                 if ( ber_peek_tag( ber, &len ) == LDAP_TAG_SYNC_COOKIE ) {
 550                                         ber_scanf( ber, /*"{"*/ "m}", &cookie );
 551                                         if ( !BER_BVISNULL( &cookie ) ) {
 552                                                 ch_free( syncCookie.octet_str.bv_val );
 553                                                 ber_dupbv( &syncCookie.octet_str, &cookie );
 554                                         }
 555                                         if ( !BER_BVISNULL( &syncCookie.octet_str ) )
 556                                         {
 557                                                 slap_parse_sync_cookie( &syncCookie );
 558                                         }
 559                                 }
 560                                 if ( syncrepl_message_to_entry( si, op, msg,
 561                                         &modlist, &entry, syncstate ) == LDAP_SUCCESS ) {
 562                                         rc_efree = syncrepl_entry( si, op, entry, &modlist,
 563                                                 syncstate, &syncUUID, &syncCookie_req, &syncCookie.ctxcsn );
 564                                         if ( !BER_BVISNULL( &syncCookie.octet_str ) )
 565                                         {
 566                                                 syncrepl_updateCookie( si, op, psub, &syncCookie );
 567                                         }
 568                                 }
 569                                 ldap_controls_free( rctrls );
 570                                 if ( modlist ) {
 571                                         slap_mods_free( modlist );
 572                                 }
 573                                 if ( rc_efree && entry ) {
 574                                         entry_free( entry );
 575                                 }
 576                                 entry = NULL;
 577                                 break;
 578
 579                         case LDAP_RES_SEARCH_REFERENCE:
 580                                 Debug( LDAP_DEBUG_ANY,
 581                                         "do_syncrep2: reference received error\n", 0, 0, 0 );
 582                                 break;
 583
 584                         case LDAP_RES_SEARCH_RESULT:
 585                                 Debug( LDAP_DEBUG_SYNC,
 586                                         "do_syncrep2: LDAP_RES_SEARCH_RESULT\n", 0, 0, 0 );
 587                                 ldap_parse_result( si->si_ld, msg, &err, NULL, NULL, NULL,
 588                                         &rctrls, 0 );
 589                                 if ( rctrls ) {
 590                                         rctrlp = *rctrls;
 591                                         ber_init2( ber, &rctrlp->ldctl_value, LBER_USE_DER );
 592
 593                                         ber_scanf( ber, "{" /*"}"*/);
 594                                         if ( ber_peek_tag( ber, &len ) == LDAP_TAG_SYNC_COOKIE ) {
 595                                                 ber_scanf( ber, "m", &cookie );
 596                                                 if ( !BER_BVISNULL( &cookie ) ) {
 597                                                         ch_free( syncCookie.octet_str.bv_val );
 598                                                         ber_dupbv( &syncCookie.octet_str, &cookie);
 599                                                 }
 600                                                 if ( !BER_BVISNULL( &syncCookie.octet_str ) )
 601                                                 {
 602                                                         slap_parse_sync_cookie( &syncCookie );
 603                                                 }
 604                                         }
 605                                         if ( ber_peek_tag( ber, &len ) == LDAP_TAG_REFRESHDELETES )
 606                                         {
 607                                                 ber_scanf( ber, "b", &refreshDeletes );
 608                                         }
 609                                         ber_scanf( ber, /*"{"*/ "}" );
 610                                 }
 611                                 if ( BER_BVISNULL( &syncCookie_req.ctxcsn )) {
 612                                         match = -1;
 613                                 } else if ( BER_BVISNULL( &syncCookie.ctxcsn )) {
 614                                         match = 1;
 615                                 } else {
 616                                         value_match( &match, slap_schema.si_ad_entryCSN,
 617                                                 slap_schema.si_ad_entryCSN->ad_type->sat_ordering,
 618                                                 SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
 619                                                 &syncCookie_req.ctxcsn, &syncCookie.ctxcsn,
 620                                                 &text );
 621                                 }
 622                                 if ( !BER_BVISNULL( &syncCookie.octet_str ) &&
 623                                         match < 0 && err == LDAP_SUCCESS )
 624                                 {
 625                                         syncrepl_updateCookie( si, op, psub, &syncCookie );
 626                                 }
 627                                 if ( rctrls ) {
 628                                         ldap_controls_free( rctrls );
 629                                 }
 630                                 if (si->si_type != LDAP_SYNC_REFRESH_AND_PERSIST) {
 631                                         /* FIXME : different error behaviors according to
 632                                          *      1) err code : LDAP_BUSY ...
 633                                          *      2) on err policy : stop service, stop sync, retry
 634                                          */
 635                                         if ( refreshDeletes == 0 && match < 0 &&
 636                                                 err == LDAP_SUCCESS )
 637                                         {
 638                                                 syncrepl_del_nonpresent( op, si, NULL );
 639                                         } else {
 640                                                 avl_free( si->si_presentlist, avl_ber_bvfree );
 641                                                 si->si_presentlist = NULL;
 642                                         }
 643                                 }
 644                                 rc = -2;
 645                                 goto done;
 646                                 break;
 647
 648                         case LDAP_RES_INTERMEDIATE:
 649                                 rc = ldap_parse_intermediate( si->si_ld, msg,
 650                                         &retoid, &retdata, NULL, 0 );
 651                                 if ( !rc && !strcmp( retoid, LDAP_SYNC_INFO ) ) {
 652                                         ber_init2( ber, retdata, LBER_USE_DER );
 653
 654                                         switch ( si_tag = ber_peek_tag( ber, &len )) {
 655                                         ber_tag_t tag;
 656                                         case LDAP_TAG_SYNC_NEW_COOKIE:
 657                                                 Debug( LDAP_DEBUG_SYNC,
 658                                                         "do_syncrep2: %s - %s%s\n",
 659                                                         "LDAP_RES_INTERMEDIATE",
 660                                                         "NEW_COOKIE", "\n" );
 661                                                 ber_scanf( ber, "tm", &tag, &cookie );
 662                                                 break;
 663                                         case LDAP_TAG_SYNC_REFRESH_DELETE:
 664                                         case LDAP_TAG_SYNC_REFRESH_PRESENT:
 665                                                 Debug( LDAP_DEBUG_SYNC,
 666                                                         "do_syncrep2: %s - %s%s\n",
 667                                                         "LDAP_RES_INTERMEDIATE",
 668                                                         si_tag == LDAP_TAG_SYNC_REFRESH_PRESENT ?
 669                                                         "REFRESH_PRESENT" : "REFRESH_DELETE",
 670                                                         "\n" );
 671                                                 if ( si_tag == LDAP_TAG_SYNC_REFRESH_DELETE ) {
 672                                                         si->si_refreshDelete = 1;
 673                                                 } else {
 674                                                         si->si_refreshPresent = 1;
 675                                                 }
 676                                                 ber_scanf( ber, "t{" /*"}"*/, &tag );
 677                                                 if ( ber_peek_tag( ber, &len ) == LDAP_TAG_SYNC_COOKIE )
 678                                                 {
 679                                                         ber_scanf( ber, "m", &cookie );
 680                                                         if ( !BER_BVISNULL( &cookie ) ) {
 681                                                                 ch_free( syncCookie.octet_str.bv_val );
 682                                                                 ber_dupbv( &syncCookie.octet_str, &cookie );
 683                                                         }
 684                                                         if ( !BER_BVISNULL( &syncCookie.octet_str ) )
 685                                                         {
 686                                                                 slap_parse_sync_cookie( &syncCookie );
 687                                                         }
 688                                                 }
 689                                                 if ( ber_peek_tag( ber, &len ) ==
 690                                                         LDAP_TAG_REFRESHDONE )
 691                                                 {
 692                                                         ber_scanf( ber, "b", &refreshDone );
 693                                                 }
 694                                                 ber_scanf( ber, /*"{"*/ "}" );
 695                                                 break;
 696                                         case LDAP_TAG_SYNC_ID_SET:
 697                                                 Debug( LDAP_DEBUG_SYNC,
 698                                                         "do_syncrep2: %s - %s%s\n",
 699                                                         "LDAP_RES_INTERMEDIATE",
 700                                                         "SYNC_ID_SET",
 701                                                         "\n" );
 702                                                 ber_scanf( ber, "t{" /*"}"*/, &tag );
 703                                                 if ( ber_peek_tag( ber, &len ) ==
 704                                                         LDAP_TAG_SYNC_COOKIE )
 705                                                 {
 706                                                         ber_scanf( ber, "m", &cookie );
 707                                                         if ( !BER_BVISNULL( &cookie ) ) {
 708                                                                 ch_free( syncCookie.octet_str.bv_val );
 709                                                                 ber_dupbv( &syncCookie.octet_str, &cookie );
 710                                                         }
 711                                                         if ( !BER_BVISNULL( &syncCookie.octet_str ) )
 712                                                         {
 713                                                                 slap_parse_sync_cookie( &syncCookie );
 714                                                         }
 715                                                 }
 716                                                 if ( ber_peek_tag( ber, &len ) ==
 717                                                         LDAP_TAG_REFRESHDELETES )
 718                                                 {
 719                                                         ber_scanf( ber, "b", &refreshDeletes );
 720                                                 }
 721                                                 ber_scanf( ber, "[W]", &syncUUIDs );
 722                                                 ber_scanf( ber, /*"{"*/ "}" );
 723                                                 if ( refreshDeletes ) {
 724                                                         syncrepl_del_nonpresent( op, si, syncUUIDs );
 725                                                         ber_bvarray_free_x( syncUUIDs, op->o_tmpmemctx );
 726                                                 } else {
 727                                                         for ( i = 0; !BER_BVISNULL( &syncUUIDs[i] ); i++ ) {
 728                                                                 struct berval *syncuuid_bv;
 729                                                                 syncuuid_bv = ber_dupbv( NULL, &syncUUIDs[i] );
 730                                                                 slap_sl_free( syncUUIDs[i].bv_val,op->o_tmpmemctx );
 731                                                                 avl_insert( &si->si_presentlist,
 732                                                                         (caddr_t) syncuuid_bv,
 733                                                                         syncuuid_cmp, avl_dup_error );
 734                                                         }
 735                                                         slap_sl_free( syncUUIDs, op->o_tmpmemctx );
 736                                                 }
 737                                                 break;
 738                                         default:
 739                                                 Debug( LDAP_DEBUG_ANY,
 740                                                         "do_syncrep2 : unknown syncinfo tag (%ld)\n",
 741                                                 (long) si_tag, 0, 0 );
 742                                                 ldap_memfree( retoid );
 743                                                 ber_bvfree( retdata );
 744                                                 continue;
 745                                         }
 746
 747                                         if ( BER_BVISNULL( &syncCookie_req.ctxcsn )) {
 748                                                 match = -1;
 749                                         } else if ( BER_BVISNULL( &syncCookie.ctxcsn )) {
 750                                                 match = 1;
 751                                         } else {
 752                                                 value_match( &match, slap_schema.si_ad_entryCSN,
 753                                                         slap_schema.si_ad_entryCSN->ad_type->sat_ordering,
 754                                                         SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
 755                                                         &syncCookie_req.ctxcsn,
 756                                                         &syncCookie.ctxcsn, &text );
 757                                         }
 758
 759                                         if ( !BER_BVISNULL( &syncCookie.ctxcsn ) &&
 760                                                 match < 0 )
 761                                         {
 762                                                 syncrepl_updateCookie( si, op, psub, &syncCookie);
 763                                         }
 764
 765                                         if ( si->si_refreshPresent == 1 ) {
 766                                                 if ( match < 0 ) {
 767                                                         syncrepl_del_nonpresent( op, si, NULL );
 768                                                 }
 769                                         }
 770
 771                                         ldap_memfree( retoid );
 772                                         ber_bvfree( retdata );
 773                                         break;
 774
 775                                 } else {
 776                                         Debug( LDAP_DEBUG_ANY, "do_syncrep2 : "
 777                                                 "unknown intermediate response (%d)\n",
 778                                                 rc, 0, 0 );
 779                                         ldap_memfree( retoid );
 780                                         ber_bvfree( retdata );
 781                                         break;
 782                                 }
 783                                 break;
 784
 785                         default:
 786                                 Debug( LDAP_DEBUG_ANY, "do_syncrep2 : "
 787                                         "unknown message\n", 0, 0, 0 );
 788                                 break;
 789
 790                         }
 791                         if ( !BER_BVISNULL( &syncCookie.octet_str )) {
 792                                 slap_sync_cookie_free( &syncCookie_req, 0 );
 793                                 slap_dup_sync_cookie( &syncCookie_req, &syncCookie );
 794                                 slap_sync_cookie_free( &syncCookie, 0 );
 795                         }
 796                 }
 797                 ldap_msgfree( res );
 798                 res = NULL;
 799         }
 800
 801         if ( rc == -1 ) {
 802                 const char *errstr;
 803
 804                 ldap_get_option( si->si_ld, LDAP_OPT_ERROR_NUMBER, &rc );
 805                 errstr = ldap_err2string( rc );
 806
 807                 Debug( LDAP_DEBUG_ANY,
 808                         "do_syncrep2 : %s\n", errstr, 0, 0 );
 809         }
 810
 811 done:
 812         slap_sync_cookie_free( &syncCookie, 0 );
 813         slap_sync_cookie_free( &syncCookie_req, 0 );
 814
 815         if ( res ) ldap_msgfree( res );
 816
 817         if ( rc && si->si_ld ) {
 818                 ldap_unbind_ext( si->si_ld, NULL, NULL );
 819                 si->si_ld = NULL;
 820         }
 821
 822         return rc;
 823 }
 824
 825 void *
 826 do_syncrepl(
 827         void    *ctx,
 828         void    *arg )
 829 {
 830         struct re_s* rtask = arg;
 831         syncinfo_t *si = ( syncinfo_t * ) rtask->arg;
 832         Connection conn = {0};
 833         char opbuf[OPERATION_BUFFER_SIZE];
 834         Operation *op;
 835         int rc = LDAP_SUCCESS;
 836         int first = 0;
 837         int dostop = 0;
 838         ber_socket_t s;
 839         int i, defer = 1;
 840         Backend *be;
 841
 842         Debug( LDAP_DEBUG_TRACE, "=>do_syncrepl\n", 0, 0, 0 );
 843
 844         if ( si == NULL )
 845                 return NULL;
 846
 847         ldap_pvt_thread_mutex_lock( &si->si_mutex );
 848
 849         switch( abs( si->si_type )) {
 850         case LDAP_SYNC_REFRESH_ONLY:
 851         case LDAP_SYNC_REFRESH_AND_PERSIST:
 852                 break;
 853         default:
 854                 ldap_pvt_thread_mutex_unlock( &si->si_mutex );
 855                 return NULL;
 856         }
 857
 858         if ( slapd_shutdown ) {
 859                 if ( si->si_ld ) {
 860                         ldap_get_option( si->si_ld, LDAP_OPT_DESC, &s );
 861                         connection_client_stop( s );
 862                         ldap_unbind_ext( si->si_ld, NULL, NULL );
 863                         si->si_ld = NULL;
 864                 }
 865                 ldap_pvt_thread_mutex_unlock( &si->si_mutex );
 866                 return NULL;
 867         }
 868
 869         op = (Operation *)opbuf;
 870         connection_fake_init( &conn, op, ctx );
 871
 872         /* use global malloc for now */
 873         op->o_tmpmemctx = NULL;
 874         op->o_tmpmfuncs = &ch_mfuncs;
 875
 876         op->o_managedsait = SLAP_CONTROL_NONCRITICAL;
 877         op->o_bd = be = si->si_be;
 878         op->o_dn = op->o_bd->be_rootdn;
 879         op->o_ndn = op->o_bd->be_rootndn;
 880
 881         /* Establish session, do search */
 882         if ( !si->si_ld ) {
 883                 first = 1;
 884                 si->si_refreshDelete = 0;
 885                 si->si_refreshPresent = 0;
 886                 rc = do_syncrep1( op, si );
 887         }
 888
 889         /* Process results */
 890         if ( rc == LDAP_SUCCESS ) {
 891                 ldap_get_option( si->si_ld, LDAP_OPT_DESC, &s );
 892
 893                 rc = do_syncrep2( op, si );
 894
 895                 if ( abs(si->si_type) == LDAP_SYNC_REFRESH_AND_PERSIST ) {
 896                         /* If we succeeded, enable the connection for further listening.
 897                          * If we failed, tear down the connection and reschedule.
 898                          */
 899                         if ( rc == LDAP_SUCCESS ) {
 900                                 if ( first ) {
 901                                         rc = connection_client_setup( s, do_syncrepl, arg );
 902                                 } else {
 903                                         connection_client_enable( s );
 904                                 }
 905                         } else if ( !first ) {
 906                                 dostop = 1;
 907                         }
 908                 } else {
 909                         if ( rc == -2 ) rc = 0;
 910                 }
 911         }
 912
 913         /* At this point, we have 4 cases:
 914          * 1) for any hard failure, give up and remove this task
 915          * 2) for ServerDown, reschedule this task to run
 916          * 3) for Refresh and Success, reschedule to run
 917          * 4) for Persist and Success, reschedule to defer
 918          */
 919         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 920
 921         if ( ldap_pvt_runqueue_isrunning( &slapd_rq, rtask )) {
 922                 ldap_pvt_runqueue_stoptask( &slapd_rq, rtask );
 923         }
 924
 925         if ( dostop ) {
 926                 connection_client_stop( s );
 927         }
 928
 929         if ( rc == LDAP_SUCCESS ) {
 930                 if ( si->si_type == LDAP_SYNC_REFRESH_ONLY ) {
 931                         defer = 0;
 932                 }
 933                 rtask->interval.tv_sec = si->si_interval;
 934                 ldap_pvt_runqueue_resched( &slapd_rq, rtask, defer );
 935                 if ( si->si_retrynum ) {
 936                         for ( i = 0; si->si_retrynum_init[i] != -2; i++ ) {
 937                                 si->si_retrynum[i] = si->si_retrynum_init[i];
 938                         }
 939                         si->si_retrynum[i] = -2;
 940                 }
 941         } else {
 942                 for ( i = 0; si->si_retrynum && si->si_retrynum[i] <= 0; i++ ) {
 943                         if ( si->si_retrynum[i] == -1  || si->si_retrynum[i] == -2 )
 944                                 break;
 945                 }
 946
 947                 if ( !si->si_retrynum || si->si_retrynum[i] == -2 ) {
 948                         ldap_pvt_runqueue_remove( &slapd_rq, rtask );
 949                 } else if ( si->si_retrynum[i] >= -1 ) {
 950                         if ( si->si_retrynum[i] > 0 )
 951                                 si->si_retrynum[i]--;
 952                         rtask->interval.tv_sec = si->si_retryinterval[i];
 953                         ldap_pvt_runqueue_resched( &slapd_rq, rtask, 0 );
 954                         slap_wake_listener();
 955                 }
 956         }
 957
 958         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 959         ldap_pvt_thread_mutex_unlock( &si->si_mutex );
 960
 961         return NULL;
 962 }
 963
 964 int
 965 syncrepl_message_to_entry(
 966         syncinfo_t      *si,
 967         Operation       *op,
 968         LDAPMessage     *msg,
 969         Modifications   **modlist,
 970         Entry                   **entry,
 971         int             syncstate
 972 )
 973 {
 974         Entry           *e = NULL;
 975         BerElement      *ber = NULL;
 976         Modifications   tmp;
 977         Modifications   *mod;
 978         Modifications   **modtail = modlist;
 979
 980         const char      *text;
 981         char txtbuf[SLAP_TEXT_BUFLEN];
 982         size_t textlen = sizeof txtbuf;
 983
 984         struct berval   bdn = {0, NULL}, dn, ndn;
 985         int             rc;
 986
 987         *modlist = NULL;
 988
 989         if ( ldap_msgtype( msg ) != LDAP_RES_SEARCH_ENTRY ) {
 990                 Debug( LDAP_DEBUG_ANY,
 991                         "Message type should be entry (%d)", ldap_msgtype( msg ), 0, 0 );
 992                 return -1;
 993         }
 994
 995         op->o_tag = LDAP_REQ_ADD;
 996
 997         rc = ldap_get_dn_ber( si->si_ld, msg, &ber, &bdn );
 998
 999         if ( rc != LDAP_SUCCESS ) {
1000                 Debug( LDAP_DEBUG_ANY,
1001                         "syncrepl_message_to_entry : dn get failed (%d)", rc, 0, 0 );
1002                 return rc;
1003         }
1004
1005         dnPrettyNormal( NULL, &bdn, &dn, &ndn, op->o_tmpmemctx );
1006         ber_dupbv( &op->o_req_dn, &dn );
1007         ber_dupbv( &op->o_req_ndn, &ndn );
1008         slap_sl_free( ndn.bv_val, op->o_tmpmemctx );
1009         slap_sl_free( dn.bv_val, op->o_tmpmemctx );
1010
1011         if ( syncstate == LDAP_SYNC_PRESENT || syncstate == LDAP_SYNC_DELETE ) {
1012                 if ( entry )
1013                         *entry = NULL;
1014                 return LDAP_SUCCESS;
1015         }
1016
1017         if ( entry == NULL ) {
1018                 return -1;
1019         }
1020
1021         e = ( Entry * ) ch_calloc( 1, sizeof( Entry ) );
1022         *entry = e;
1023         e->e_name = op->o_req_dn;
1024         e->e_nname = op->o_req_ndn;
1025
1026         while ( ber_remaining( ber ) ) {
1027                 if ( (ber_scanf( ber, "{mW}", &tmp.sml_type, &tmp.sml_values ) ==
1028                         LBER_ERROR ) || BER_BVISNULL( &tmp.sml_type ) )
1029                 {
1030                         break;
1031                 }
1032
1033                 mod  = (Modifications *) ch_malloc( sizeof( Modifications ));
1034
1035                 mod->sml_op = LDAP_MOD_REPLACE;
1036                 mod->sml_next = NULL;
1037                 mod->sml_desc = NULL;
1038                 mod->sml_type = tmp.sml_type;
1039                 mod->sml_values = tmp.sml_values;
1040                 mod->sml_nvalues = NULL;
1041
1042                 *modtail = mod;
1043                 modtail = &mod->sml_next;
1044         }
1045
1046         if ( *modlist == NULL ) {
1047                 Debug( LDAP_DEBUG_ANY, "syncrepl_message_to_entry: no attributes\n",
1048                         0, 0, 0 );
1049                 rc = -1;
1050                 goto done;
1051         }
1052
1053         rc = slap_mods_check( *modlist, &text, txtbuf, textlen, NULL );
1054
1055         if ( rc != LDAP_SUCCESS ) {
1056                 Debug( LDAP_DEBUG_ANY, "syncrepl_message_to_entry: mods check (%s)\n",
1057                         text, 0, 0 );
1058                 goto done;
1059         }
1060
1061         /* Strip out dynamically generated attrs */
1062         for ( modtail = modlist; *modtail ; ) {
1063                 mod = *modtail;
1064                 if ( mod->sml_desc->ad_type->sat_flags & SLAP_AT_DYNAMIC ) {
1065                         *modtail = mod->sml_next;
1066                         slap_mod_free( &mod->sml_mod, 0 );
1067                         ch_free( mod );
1068                 } else {
1069                         modtail = &mod->sml_next;
1070                 }
1071         }
1072
1073         /* Strip out attrs in exattrs list */
1074         for ( modtail = modlist; *modtail ; ) {
1075                 mod = *modtail;
1076                 if ( ldap_charray_inlist( si->si_exattrs,
1077                                         mod->sml_desc->ad_type->sat_cname.bv_val )) {
1078                         *modtail = mod->sml_next;
1079                         slap_mod_free( &mod->sml_mod, 0 );
1080                         ch_free( mod );
1081                 } else {
1082                         modtail = &mod->sml_next;
1083                 }
1084         }
1085
1086         rc = slap_mods2entry( *modlist, &e, 1, 1, &text, txtbuf, textlen);
1087         if( rc != LDAP_SUCCESS ) {
1088                 Debug( LDAP_DEBUG_ANY, "syncrepl_message_to_entry: mods2entry (%s)\n",
1089                         text, 0, 0 );
1090         }
1091
1092 done:
1093         ber_free ( ber, 0 );
1094         if ( rc != LDAP_SUCCESS ) {
1095                 if ( e ) {
1096                         entry_free( e );
1097                         *entry = e = NULL;
1098                 }
1099         }
1100
1101         return rc;
1102 }
1103
1104 static struct berval generic_filterstr = BER_BVC("(objectclass=*)");
1105
1106 /* During a refresh, we may get an LDAP_SYNC_ADD for an already existing
1107  * entry if a previous refresh was interrupted before sending us a new
1108  * context state. We try to compare the new entry to the existing entry
1109  * and ignore the new entry if they are the same.
1110  *
1111  * Also, we may get an update where the entryDN has changed, due to
1112  * a ModDn on the provider. We detect this as well, so we can issue
1113  * the corresponding operation locally.
1114  *
1115  * In the case of a modify, we get a list of all the attributes
1116  * in the original entry. Rather than deleting the entry and re-adding it,
1117  * we issue a Modify request that deletes all the attributes and adds all
1118  * the new ones. This avoids the issue of trying to delete/add a non-leaf
1119  * entry.
1120  *
1121  * We don't try to otherwise distinguish ModDN from Modify; in the case of
1122  * a ModDN we will issue both operations on the local database.
1123  */
1124 typedef struct dninfo {
1125         Entry *new_entry;
1126         struct berval dn;
1127         struct berval ndn;
1128         int renamed;    /* Was an existing entry renamed? */
1129         int wasChanged; /* are the attributes changed? */
1130         int attrs;              /* how many attribute types are in the ads list */
1131         AttributeDescription **ads;
1132 } dninfo;
1133
1134 int
1135 syncrepl_entry(
1136         syncinfo_t* si,
1137         Operation *op,
1138         Entry* entry,
1139         Modifications** modlist,
1140         int syncstate,
1141         struct berval* syncUUID,
1142         struct sync_cookie* syncCookie_req,
1143         struct berval* syncCSN )
1144 {
1145         Backend *be = op->o_bd;
1146         slap_callback   cb = { NULL };
1147         struct berval   *syncuuid_bv = NULL;
1148         struct berval   syncUUID_strrep = BER_BVNULL;
1149         struct berval   uuid_bv = BER_BVNULL;
1150
1151         SlapReply       rs_search = {REP_RESULT};
1152         SlapReply       rs_delete = {REP_RESULT};
1153         SlapReply       rs_add = {REP_RESULT};
1154         SlapReply       rs_modify = {REP_RESULT};
1155         Filter f = {0};
1156 #ifdef LDAP_COMP_MATCH
1157         AttributeAssertion ava = { NULL, BER_BVNULL, NULL };
1158 #else
1159         AttributeAssertion ava = { NULL, BER_BVNULL };
1160 #endif
1161         int rc = LDAP_SUCCESS;
1162         int ret = LDAP_SUCCESS;
1163
1164         struct berval pdn = BER_BVNULL;
1165         dninfo dni = {0};
1166         int     retry = 1;
1167
1168         switch( syncstate ) {
1169         case LDAP_SYNC_PRESENT:
1170                 Debug( LDAP_DEBUG_SYNC, "%s: %s\n",
1171                                         "syncrepl_entry",
1172                                         "LDAP_RES_SEARCH_ENTRY(LDAP_SYNC_PRESENT)", 0 );
1173                 break;
1174         case LDAP_SYNC_ADD:
1175                 Debug( LDAP_DEBUG_SYNC, "%s: %s\n",
1176                                         "syncrepl_entry",
1177                                         "LDAP_RES_SEARCH_ENTRY(LDAP_SYNC_ADD)", 0 );
1178                 break;
1179         case LDAP_SYNC_DELETE:
1180                 Debug( LDAP_DEBUG_SYNC, "%s: %s\n",
1181                                         "syncrepl_entry",
1182                                         "LDAP_RES_SEARCH_ENTRY(LDAP_SYNC_DELETE)", 0 );
1183                 break;
1184         case LDAP_SYNC_MODIFY:
1185                 Debug( LDAP_DEBUG_SYNC, "%s: %s\n",
1186                                         "syncrepl_entry",
1187                                         "LDAP_RES_SEARCH_ENTRY(LDAP_SYNC_MODIFY)", 0 );
1188                 break;
1189         default:
1190                 Debug( LDAP_DEBUG_ANY, "%s: %s\n",
1191                                         "syncrepl_entry",
1192                                         "LDAP_RES_SEARCH_ENTRY(UNKNOWN syncstate)", 0 );
1193         }
1194
1195         if (( syncstate == LDAP_SYNC_PRESENT || syncstate == LDAP_SYNC_ADD )) {
1196                 if ( !si->si_refreshPresent ) {
1197                         syncuuid_bv = ber_dupbv( NULL, syncUUID );
1198                         avl_insert( &si->si_presentlist, (caddr_t) syncuuid_bv,
1199                                 syncuuid_cmp, avl_dup_error );
1200                 }
1201         }
1202
1203         if ( syncstate == LDAP_SYNC_PRESENT ) {
1204                 return 0;
1205         } else if ( syncstate != LDAP_SYNC_DELETE ) {
1206                 if ( entry == NULL ) {
1207                         return 0;
1208                 }
1209         }
1210
1211         f.f_choice = LDAP_FILTER_EQUALITY;
1212         f.f_ava = &ava;
1213         ava.aa_desc = slap_schema.si_ad_entryUUID;
1214         (void)slap_uuidstr_from_normalized( &syncUUID_strrep, syncUUID, op->o_tmpmemctx );
1215         ava.aa_value = *syncUUID;
1216         op->ors_filter = &f;
1217
1218         op->ors_filterstr.bv_len = STRLENOF( "(entryUUID=)" ) + syncUUID->bv_len;
1219         op->ors_filterstr.bv_val = (char *) slap_sl_malloc(
1220                 op->ors_filterstr.bv_len + 1, op->o_tmpmemctx );
1221         AC_MEMCPY( op->ors_filterstr.bv_val, "(entryUUID=", STRLENOF( "(entryUUID=" ) );
1222         AC_MEMCPY( &op->ors_filterstr.bv_val[STRLENOF( "(entryUUID=" )],
1223                 syncUUID->bv_val, syncUUID->bv_len );
1224         op->ors_filterstr.bv_val[op->ors_filterstr.bv_len - 1] = ')';
1225         op->ors_filterstr.bv_val[op->ors_filterstr.bv_len] = '\0';
1226
1227         op->o_tag = LDAP_REQ_SEARCH;
1228         op->ors_scope = LDAP_SCOPE_SUBTREE;
1229
1230         /* get the entry for this UUID */
1231         op->o_req_dn = si->si_base;
1232         op->o_req_ndn = si->si_base;
1233
1234         op->o_time = slap_get_time();
1235         op->ors_tlimit = SLAP_NO_LIMIT;
1236         op->ors_slimit = 1;
1237
1238         op->ors_attrs = slap_anlist_all_attributes;
1239         op->ors_attrsonly = 0;
1240
1241         /* set callback function */
1242         op->o_callback = &cb;
1243         cb.sc_response = dn_callback;
1244         cb.sc_private = &dni;
1245         dni.new_entry = entry;
1246
1247         if ( limits_check( op, &rs_search ) == 0 ) {
1248                 rc = be->be_search( op, &rs_search );
1249                 Debug( LDAP_DEBUG_SYNC,
1250                                 "syncrepl_entry: %s (%d)\n",
1251                                 "be_search", rc, 0 );
1252         }
1253
1254         if ( !BER_BVISNULL( &op->ors_filterstr ) ) {
1255                 slap_sl_free( op->ors_filterstr.bv_val, op->o_tmpmemctx );
1256         }
1257
1258         cb.sc_response = null_callback;
1259         cb.sc_private = si;
1260
1261         if ( entry && !BER_BVISNULL( &entry->e_name ) ) {
1262                 Debug( LDAP_DEBUG_SYNC,
1263                                 "syncrepl_entry: %s\n",
1264                                 entry->e_name.bv_val, 0, 0 );
1265         } else {
1266                 Debug( LDAP_DEBUG_SYNC,
1267                                 "syncrepl_entry: %s\n",
1268                                 dni.dn.bv_val ? dni.dn.bv_val : "(null)", 0, 0 );
1269         }
1270
1271         if ( syncstate != LDAP_SYNC_DELETE ) {
1272                 Attribute       *a = attr_find( entry->e_attrs, slap_schema.si_ad_entryUUID );
1273
1274                 if ( a == NULL ) {
1275                         /* add if missing */
1276                         attr_merge_one( entry, slap_schema.si_ad_entryUUID,
1277                                 &syncUUID_strrep, syncUUID );
1278
1279                 } else if ( !bvmatch( &a->a_nvals[0], syncUUID ) ) {
1280                         /* replace only if necessary */
1281                         if ( a->a_nvals != a->a_vals ) {
1282                                 ber_memfree( a->a_nvals[0].bv_val );
1283                                 ber_dupbv( &a->a_nvals[0], syncUUID );
1284                         }
1285                         ber_memfree( a->a_vals[0].bv_val );
1286                         ber_dupbv( &a->a_vals[0], &syncUUID_strrep );
1287                 }
1288         }
1289
1290         switch ( syncstate ) {
1291         case LDAP_SYNC_ADD:
1292         case LDAP_SYNC_MODIFY:
1293 retry_add:;
1294                 if ( BER_BVISNULL( &dni.dn )) {
1295
1296                         op->o_req_dn = entry->e_name;
1297                         op->o_req_ndn = entry->e_nname;
1298                         op->o_tag = LDAP_REQ_ADD;
1299                         op->ora_e = entry;
1300
1301                         rc = be->be_add( op, &rs_add );
1302                         Debug( LDAP_DEBUG_SYNC,
1303                                         "syncrepl_entry: %s (%d)\n",
1304                                         "be_add", rc, 0 );
1305                         switch ( rs_add.sr_err ) {
1306                         case LDAP_SUCCESS:
1307                                 be_entry_release_w( op, entry );
1308                                 ret = 0;
1309                                 break;
1310
1311                         case LDAP_REFERRAL:
1312                         /* we assume that LDAP_NO_SUCH_OBJECT is returned
1313                          * only if the suffix entry is not present */
1314                         case LDAP_NO_SUCH_OBJECT:
1315                                 syncrepl_add_glue( op, entry );
1316                                 ret = 0;
1317                                 break;
1318
1319                         /* if an entry was added via syncrepl_add_glue(),
1320                          * it likely has no entryUUID, so the previous
1321                          * be_search() doesn't find it.  In this case,
1322                          * give syncrepl a chance to modify it. Also
1323                          * allow for entries that were recreated with the
1324                          * same DN but a different entryUUID.
1325                          */
1326                         case LDAP_ALREADY_EXISTS:
1327                                 if ( retry ) {
1328                                         Operation       op2 = *op;
1329                                         SlapReply       rs2 = { 0 };
1330                                         slap_callback   cb2 = { 0 };
1331
1332                                         op2.o_tag = LDAP_REQ_SEARCH;
1333                                         op2.o_req_dn = entry->e_name;
1334                                         op2.o_req_ndn = entry->e_nname;
1335                                         op2.ors_scope = LDAP_SCOPE_BASE;
1336                                         op2.ors_attrs = slap_anlist_all_attributes;
1337                                         op2.ors_attrsonly = 0;
1338                                         op2.ors_limit = NULL;
1339                                         op2.ors_slimit = 1;
1340                                         op2.ors_tlimit = SLAP_NO_LIMIT;
1341
1342                                         f.f_choice = LDAP_FILTER_PRESENT;
1343                                         f.f_desc = slap_schema.si_ad_objectClass;
1344                                         op2.ors_filter = &f;
1345                                         op2.ors_filterstr = generic_filterstr;
1346
1347                                         op2.o_callback = &cb2;
1348                                         cb2.sc_response = dn_callback;
1349                                         cb2.sc_private = &dni;
1350
1351                                         be->be_search( &op2, &rs2 );
1352
1353                                         retry = 0;
1354                                         goto retry_add;
1355                                 }
1356                                 /* FALLTHRU */
1357
1358                         default:
1359                                 Debug( LDAP_DEBUG_ANY,
1360                                         "syncrepl_entry : be_add failed (%d)\n",
1361                                         rs_add.sr_err, 0, 0 );
1362                                 ret = 1;
1363                                 break;
1364                         }
1365                         goto done;
1366                 }
1367                 /* FALLTHRU */
1368                 op->o_req_dn = dni.dn;
1369                 op->o_req_ndn = dni.ndn;
1370                 if ( dni.renamed ) {
1371                         struct berval noldp, newp, nnewp;
1372
1373                         op->o_tag = LDAP_REQ_MODRDN;
1374                         dnRdn( &entry->e_name, &op->orr_newrdn );
1375                         dnRdn( &entry->e_nname, &op->orr_nnewrdn );
1376
1377                         dnParent( &dni.ndn, &noldp );
1378                         dnParent( &entry->e_nname, &nnewp );
1379                         if ( !dn_match( &noldp, &newp )) {
1380                                 dnParent( &entry->e_name, &newp );
1381                                 op->orr_newSup = &newp;
1382                                 op->orr_nnewSup = &nnewp;
1383                         }
1384                         op->orr_deleteoldrdn = 0;
1385                         rc = be->be_modrdn( op, &rs_modify );
1386                         Debug( LDAP_DEBUG_SYNC,
1387                                         "syncrepl_entry: %s (%d)\n",
1388                                         "be_modrdn", rc, 0 );
1389                         if ( rs_modify.sr_err == LDAP_SUCCESS ) {
1390                                 op->o_req_dn = entry->e_name;
1391                                 op->o_req_ndn = entry->e_nname;
1392                         } else {
1393                                 ret = 1;
1394                                 goto done;
1395                         }
1396                 }
1397                 if ( dni.wasChanged ) {
1398                         Modifications *mod, *modhead = NULL;
1399                         Modifications *modtail = NULL;
1400                         int i;
1401
1402                         op->o_tag = LDAP_REQ_MODIFY;
1403
1404                         assert( *modlist );
1405
1406                         /* Delete all the old attrs */
1407                         for ( i = 0; i < dni.attrs; i++ ) {
1408                                 mod = ch_malloc( sizeof( Modifications ) );
1409                                 mod->sml_op = LDAP_MOD_DELETE;
1410                                 mod->sml_desc = dni.ads[i];
1411                                 mod->sml_type = mod->sml_desc->ad_cname;
1412                                 mod->sml_values = NULL;
1413                                 mod->sml_nvalues = NULL;
1414                                 if ( !modhead ) modhead = mod;
1415                                 if ( modtail ) {
1416                                         modtail->sml_next = mod;
1417                                 }
1418                                 modtail = mod;
1419                         }
1420
1421                         /* Append passed in list to ours */
1422                         if ( modtail ) {
1423                                 modtail->sml_next = *modlist;
1424                                 *modlist = modhead;
1425                         } else {
1426                                 mod = *modlist;
1427                         }
1428
1429                         /* Find end of this list */
1430                         for ( ; mod != NULL; mod = mod->sml_next ) {
1431                                 modtail = mod;
1432                         }
1433
1434                         mod = (Modifications *)ch_calloc(1, sizeof(Modifications));
1435                         mod->sml_op = LDAP_MOD_REPLACE;
1436                         mod->sml_desc = slap_schema.si_ad_entryUUID;
1437                         mod->sml_type = mod->sml_desc->ad_cname;
1438                         ber_dupbv( &uuid_bv, &syncUUID_strrep );
1439                         ber_bvarray_add( &mod->sml_values, &uuid_bv );
1440                         ber_dupbv( &uuid_bv, syncUUID );
1441                         ber_bvarray_add( &mod->sml_nvalues, &uuid_bv );
1442                         modtail->sml_next = mod;
1443
1444                         op->o_tag = LDAP_REQ_MODIFY;
1445                         op->orm_modlist = *modlist;
1446
1447                         rc = be->be_modify( op, &rs_modify );
1448                         Debug( LDAP_DEBUG_SYNC,
1449                                         "syncrepl_entry: %s (%d)\n",
1450                                         "be_modify", rc, 0 );
1451                         if ( rs_modify.sr_err != LDAP_SUCCESS ) {
1452                                 Debug( LDAP_DEBUG_ANY,
1453                                         "syncrepl_entry : be_modify failed (%d)\n",
1454                                         rs_modify.sr_err, 0, 0 );
1455                         }
1456                 }
1457                 ret = 1;
1458                 goto done;
1459         case LDAP_SYNC_DELETE :
1460                 if ( !BER_BVISNULL( &dni.dn )) {
1461                         op->o_req_dn = dni.dn;
1462                         op->o_req_ndn = dni.ndn;
1463                         op->o_tag = LDAP_REQ_DELETE;
1464                         rc = be->be_delete( op, &rs_delete );
1465                         Debug( LDAP_DEBUG_SYNC,
1466                                         "syncrepl_entry: %s (%d)\n",
1467                                         "be_delete", rc, 0 );
1468
1469                         while ( rs_delete.sr_err == LDAP_SUCCESS
1470                                 && op->o_delete_glue_parent ) {
1471                                 op->o_delete_glue_parent = 0;
1472                                 if ( !be_issuffix( op->o_bd, &op->o_req_ndn )) {
1473                                         slap_callback cb = { NULL };
1474                                         cb.sc_response = slap_null_cb;
1475                                         dnParent( &op->o_req_ndn, &pdn );
1476                                         op->o_req_dn = pdn;
1477                                         op->o_req_ndn = pdn;
1478                                         op->o_callback = &cb;
1479                                         op->o_bd->be_delete( op, &rs_delete );
1480                                 } else {
1481                                         break;
1482                                 }
1483                         }
1484                 }
1485                 ret = 0;
1486                 goto done;
1487
1488         default :
1489                 Debug( LDAP_DEBUG_ANY,
1490                         "syncrepl_entry : unknown syncstate\n", 0, 0, 0 );
1491                 ret = 1;
1492                 goto done;
1493         }
1494
1495 done :
1496         if ( !BER_BVISNULL( &syncUUID_strrep ) ) {
1497                 slap_sl_free( syncUUID_strrep.bv_val, op->o_tmpmemctx );
1498                 BER_BVZERO( &syncUUID_strrep );
1499         }
1500         if ( dni.ads ) {
1501                 op->o_tmpfree( dni.ads, op->o_tmpmemctx );
1502         }
1503         if ( !BER_BVISNULL( &dni.ndn ) ) {
1504                 op->o_tmpfree( dni.ndn.bv_val, op->o_tmpmemctx );
1505         }
1506         if ( !BER_BVISNULL( &dni.dn ) ) {
1507                 op->o_tmpfree( dni.dn.bv_val, op->o_tmpmemctx );
1508         }
1509         return ret;
1510 }
1511
1512 static struct berval gcbva[] = {
1513         BER_BVC("top"),
1514         BER_BVC("glue"),
1515         BER_BVNULL
1516 };
1517
1518 #define NP_DELETE_ONE   2
1519
1520 static void
1521 syncrepl_del_nonpresent(
1522         Operation *op,
1523         syncinfo_t *si,
1524         BerVarray uuids )
1525 {
1526         Backend* be = op->o_bd;
1527         slap_callback   cb = { NULL };
1528         SlapReply       rs_search = {REP_RESULT};
1529         SlapReply       rs_delete = {REP_RESULT};
1530         SlapReply       rs_modify = {REP_RESULT};
1531         struct nonpresent_entry *np_list, *np_prev;
1532         int rc;
1533         AttributeName   an[2];
1534
1535         struct berval pdn = BER_BVNULL;
1536
1537         op->o_req_dn = si->si_base;
1538         op->o_req_ndn = si->si_base;
1539
1540         cb.sc_response = nonpresent_callback;
1541         cb.sc_private = si;
1542
1543         op->o_callback = &cb;
1544         op->o_tag = LDAP_REQ_SEARCH;
1545         op->ors_scope = si->si_scope;
1546         op->ors_deref = LDAP_DEREF_NEVER;
1547         op->o_time = slap_get_time();
1548         op->ors_tlimit = SLAP_NO_LIMIT;
1549
1550
1551         if ( uuids ) {
1552                 Filter uf;
1553 #ifdef LDAP_COMP_MATCH
1554                 AttributeAssertion eq = { NULL, BER_BVNULL, NULL };
1555 #else
1556                 AttributeAssertion eq = { NULL, BER_BVNULL };
1557 #endif
1558                 int i;
1559
1560                 op->ors_attrsonly = 1;
1561                 op->ors_attrs = slap_anlist_no_attrs;
1562                 op->ors_limit = NULL;
1563                 op->ors_filter = &uf;
1564
1565                 uf.f_ava = &eq;
1566                 uf.f_av_desc = slap_schema.si_ad_entryUUID;
1567                 uf.f_next = NULL;
1568                 uf.f_choice = LDAP_FILTER_EQUALITY;
1569                 si->si_refreshDelete |= NP_DELETE_ONE;
1570
1571                 for (i=0; uuids[i].bv_val; i++) {
1572                         op->ors_slimit = 1;
1573                         uf.f_av_value = uuids[i];
1574                         rc = be->be_search( op, &rs_search );
1575                 }
1576                 si->si_refreshDelete ^= NP_DELETE_ONE;
1577         } else {
1578                 memset( &an[0], 0, 2 * sizeof( AttributeName ) );
1579                 an[0].an_name = slap_schema.si_ad_entryUUID->ad_cname;
1580                 an[0].an_desc = slap_schema.si_ad_entryUUID;
1581                 op->ors_attrs = an;
1582                 op->ors_slimit = SLAP_NO_LIMIT;
1583                 op->ors_attrsonly = 0;
1584                 op->ors_filter = str2filter_x( op, si->si_filterstr.bv_val );
1585                 op->ors_filterstr = si->si_filterstr;
1586                 op->o_nocaching = 1;
1587
1588                 if ( limits_check( op, &rs_search ) == 0 ) {
1589                         rc = be->be_search( op, &rs_search );
1590                 }
1591                 if ( op->ors_filter ) filter_free_x( op, op->ors_filter );
1592         }
1593
1594         op->o_nocaching = 0;
1595
1596         if ( !LDAP_LIST_EMPTY( &si->si_nonpresentlist ) ) {
1597
1598                 slap_queue_csn( op, &si->si_syncCookie.ctxcsn );
1599
1600                 np_list = LDAP_LIST_FIRST( &si->si_nonpresentlist );
1601                 while ( np_list != NULL ) {
1602                         LDAP_LIST_REMOVE( np_list, npe_link );
1603                         np_prev = np_list;
1604                         np_list = LDAP_LIST_NEXT( np_list, npe_link );
1605                         op->o_tag = LDAP_REQ_DELETE;
1606                         op->o_callback = &cb;
1607                         cb.sc_response = null_callback;
1608                         cb.sc_private = si;
1609                         op->o_req_dn = *np_prev->npe_name;
1610                         op->o_req_ndn = *np_prev->npe_nname;
1611                         rc = op->o_bd->be_delete( op, &rs_delete );
1612
1613                         if ( rs_delete.sr_err == LDAP_NOT_ALLOWED_ON_NONLEAF ) {
1614                                 Modifications mod1, mod2;
1615                                 mod1.sml_op = LDAP_MOD_REPLACE;
1616                                 mod1.sml_desc = slap_schema.si_ad_objectClass;
1617                                 mod1.sml_type = mod1.sml_desc->ad_cname;
1618                                 mod1.sml_values = &gcbva[0];
1619                                 mod1.sml_nvalues = NULL;
1620                                 mod1.sml_next = &mod2;
1621
1622                                 mod2.sml_op = LDAP_MOD_REPLACE;
1623                                 mod2.sml_desc = slap_schema.si_ad_structuralObjectClass;
1624                                 mod2.sml_type = mod2.sml_desc->ad_cname;
1625                                 mod2.sml_values = &gcbva[1];
1626                                 mod2.sml_nvalues = NULL;
1627                                 mod2.sml_next = NULL;
1628
1629                                 op->o_tag = LDAP_REQ_MODIFY;
1630                                 op->orm_modlist = &mod1;
1631
1632                                 rc = be->be_modify( op, &rs_modify );
1633                         }
1634
1635                         while ( rs_delete.sr_err == LDAP_SUCCESS &&
1636                                         op->o_delete_glue_parent ) {
1637                                 op->o_delete_glue_parent = 0;
1638                                 if ( !be_issuffix( op->o_bd, &op->o_req_ndn )) {
1639                                         slap_callback cb = { NULL };
1640                                         cb.sc_response = slap_null_cb;
1641                                         dnParent( &op->o_req_ndn, &pdn );
1642                                         op->o_req_dn = pdn;
1643                                         op->o_req_ndn = pdn;
1644                                         op->o_callback = &cb;
1645                                         /* give it a root privil ? */
1646                                         op->o_bd->be_delete( op, &rs_delete );
1647                                 } else {
1648                                         break;
1649                             }
1650                         }
1651
1652                         op->o_delete_glue_parent = 0;
1653
1654                         ber_bvfree( np_prev->npe_name );
1655                         ber_bvfree( np_prev->npe_nname );
1656                         ch_free( np_prev );
1657                 }
1658
1659                 slap_graduate_commit_csn( op );
1660         }
1661
1662         return;
1663 }
1664
1665 void
1666 syncrepl_add_glue(
1667         Operation* op,
1668         Entry *e )
1669 {
1670         Backend *be = op->o_bd;
1671         slap_callback cb = { NULL };
1672         Attribute       *a;
1673         int     rc;
1674         int suffrdns;
1675         int i;
1676         struct berval dn = {0, NULL};
1677         struct berval ndn = {0, NULL};
1678         Entry   *glue;
1679         SlapReply       rs_add = {REP_RESULT};
1680         char    *ptr, *comma;
1681
1682         op->o_tag = LDAP_REQ_ADD;
1683         op->o_callback = &cb;
1684         cb.sc_response = null_callback;
1685         cb.sc_private = NULL;
1686
1687         dn = e->e_name;
1688         ndn = e->e_nname;
1689
1690         /* count RDNs in suffix */
1691         if ( !BER_BVISEMPTY( &be->be_nsuffix[0] ) ) {
1692                 for ( i = 0, ptr = be->be_nsuffix[0].bv_val; ptr; ptr = strchr( ptr, ',' ) ) {
1693                         ptr++;
1694                         i++;
1695                 }
1696                 suffrdns = i;
1697         } else {
1698                 /* suffix is "" */
1699                 suffrdns = 0;
1700         }
1701
1702         /* Start with BE suffix */
1703         for ( i = 0, ptr = NULL; i < suffrdns; i++ ) {
1704                 comma = strrchr( dn.bv_val, ',' );
1705                 if ( ptr ) *ptr = ',';
1706                 if ( comma ) *comma = '\0';
1707                 ptr = comma;
1708         }
1709         if ( ptr ) {
1710                 *ptr++ = ',';
1711                 dn.bv_len -= ptr - dn.bv_val;
1712                 dn.bv_val = ptr;
1713         }
1714         /* the normalizedDNs are always the same length, no counting
1715          * required.
1716          */
1717         if ( ndn.bv_len > be->be_nsuffix[0].bv_len ) {
1718                 ndn.bv_val += ndn.bv_len - be->be_nsuffix[0].bv_len;
1719                 ndn.bv_len = be->be_nsuffix[0].bv_len;
1720         }
1721
1722         while ( ndn.bv_val > e->e_nname.bv_val ) {
1723                 glue = (Entry *) ch_calloc( 1, sizeof(Entry) );
1724                 ber_dupbv( &glue->e_name, &dn );
1725                 ber_dupbv( &glue->e_nname, &ndn );
1726
1727                 a = ch_calloc( 1, sizeof( Attribute ));
1728                 a->a_desc = slap_schema.si_ad_objectClass;
1729
1730                 a->a_vals = ch_calloc( 3, sizeof( struct berval ));
1731                 ber_dupbv( &a->a_vals[0], &gcbva[0] );
1732                 ber_dupbv( &a->a_vals[1], &gcbva[1] );
1733                 ber_dupbv( &a->a_vals[2], &gcbva[2] );
1734
1735                 a->a_nvals = a->a_vals;
1736
1737                 a->a_next = glue->e_attrs;
1738                 glue->e_attrs = a;
1739
1740                 a = ch_calloc( 1, sizeof( Attribute ));
1741                 a->a_desc = slap_schema.si_ad_structuralObjectClass;
1742
1743                 a->a_vals = ch_calloc( 2, sizeof( struct berval ));
1744                 ber_dupbv( &a->a_vals[0], &gcbva[1] );
1745                 ber_dupbv( &a->a_vals[1], &gcbva[2] );
1746
1747                 a->a_nvals = a->a_vals;
1748
1749                 a->a_next = glue->e_attrs;
1750                 glue->e_attrs = a;
1751
1752                 op->o_req_dn = glue->e_name;
1753                 op->o_req_ndn = glue->e_nname;
1754                 op->ora_e = glue;
1755                 rc = be->be_add ( op, &rs_add );
1756                 if ( rs_add.sr_err == LDAP_SUCCESS ) {
1757                         be_entry_release_w( op, glue );
1758                 } else {
1759                 /* incl. ALREADY EXIST */
1760                         entry_free( glue );
1761                 }
1762
1763                 /* Move to next child */
1764                 for (ptr = dn.bv_val-2; ptr > e->e_name.bv_val && *ptr != ','; ptr--) {
1765                         /* empty */
1766                 }
1767                 if ( ptr == e->e_name.bv_val ) break;
1768                 dn.bv_val = ++ptr;
1769                 dn.bv_len = e->e_name.bv_len - (ptr-e->e_name.bv_val);
1770                 for( ptr = ndn.bv_val-2;
1771                         ptr > e->e_nname.bv_val && *ptr != ',';
1772                         ptr--)
1773                 {
1774                         /* empty */
1775                 }
1776                 ndn.bv_val = ++ptr;
1777                 ndn.bv_len = e->e_nname.bv_len - (ptr-e->e_nname.bv_val);
1778         }
1779
1780         op->o_req_dn = e->e_name;
1781         op->o_req_ndn = e->e_nname;
1782         op->ora_e = e;
1783         rc = be->be_add ( op, &rs_add );
1784         if ( rs_add.sr_err == LDAP_SUCCESS ) {
1785                 be_entry_release_w( op, e );
1786         } else {
1787                 entry_free( e );
1788         }
1789
1790         return;
1791 }
1792
1793 void
1794 syncrepl_updateCookie(
1795         syncinfo_t *si,
1796         Operation *op,
1797         struct berval *pdn,
1798         struct sync_cookie *syncCookie )
1799 {
1800         Backend *be = op->o_bd;
1801         Modifications mod = {0};
1802         struct berval vals[2];
1803
1804         int rc;
1805
1806         slap_callback cb = { NULL };
1807         SlapReply       rs_modify = {REP_RESULT};
1808
1809         slap_sync_cookie_free( &si->si_syncCookie, 0 );
1810         slap_dup_sync_cookie( &si->si_syncCookie, syncCookie );
1811
1812         mod.sml_op = LDAP_MOD_REPLACE;
1813         mod.sml_desc = slap_schema.si_ad_contextCSN;
1814         mod.sml_type = mod.sml_desc->ad_cname;
1815         mod.sml_values = vals;
1816         vals[0] = si->si_syncCookie.ctxcsn;
1817         vals[1].bv_val = NULL;
1818         vals[1].bv_len = 0;
1819
1820         slap_queue_csn( op, &si->si_syncCookie.ctxcsn );
1821
1822         op->o_tag = LDAP_REQ_MODIFY;
1823
1824         assert( si->si_rid < 1000 );
1825
1826         cb.sc_response = null_callback;
1827         cb.sc_private = si;
1828
1829         op->o_callback = &cb;
1830         op->o_req_dn = op->o_bd->be_suffix[0];
1831         op->o_req_ndn = op->o_bd->be_nsuffix[0];
1832
1833         /* update contextCSN */
1834         op->o_msgid = SLAP_SYNC_UPDATE_MSGID;
1835         op->orm_modlist = &mod;
1836         rc = be->be_modify( op, &rs_modify );
1837         op->o_msgid = 0;
1838
1839         if ( rs_modify.sr_err != LDAP_SUCCESS ) {
1840                 Debug( LDAP_DEBUG_ANY,
1841                         "be_modify failed (%d)\n", rs_modify.sr_err, 0, 0 );
1842         }
1843
1844         slap_graduate_commit_csn( op );
1845
1846         return;
1847 }
1848
1849 static int
1850 dn_callback(
1851         Operation*      op,
1852         SlapReply*      rs )
1853 {
1854         dninfo *dni = op->o_callback->sc_private;
1855
1856         if ( rs->sr_type == REP_SEARCH ) {
1857                 if ( !BER_BVISNULL( &dni->dn ) ) {
1858                         Debug( LDAP_DEBUG_ANY,
1859                                 "dn_callback : consistency error - "
1860                                 "entryUUID is not unique\n", 0, 0, 0 );
1861                 } else {
1862                         ber_dupbv_x( &dni->dn, &rs->sr_entry->e_name, op->o_tmpmemctx );
1863                         ber_dupbv_x( &dni->ndn, &rs->sr_entry->e_nname, op->o_tmpmemctx );
1864                         /* If there is a new entry, see if it differs from the old.
1865                          * We compare the non-normalized values so that cosmetic changes
1866                          * in the provider are always propagated.
1867                          */
1868                         if ( dni->new_entry ) {
1869                                 Attribute *old, *new;
1870                                 int i;
1871
1872                                 /* Did the DN change? Note that we don't explicitly try to
1873                                  * discover if the deleteOldRdn argument applies here. It
1874                                  * would save an unnecessary Modify if we detected it, but
1875                                  * that's a fair amount of trouble to compare the two attr
1876                                  * lists in detail.
1877                                  */
1878                                 if ( !dn_match( &rs->sr_entry->e_name,
1879                                                 &dni->new_entry->e_name ) )
1880                                 {
1881                                         dni->renamed = 1;
1882                                 }
1883
1884                                 for ( i = 0, old = rs->sr_entry->e_attrs;
1885                                                 old;
1886                                                 i++, old = old->a_next )
1887                                         ;
1888
1889                                 dni->attrs = i;
1890
1891                                 /* We assume that attributes are saved in the same order
1892                                  * in the remote and local databases. So if we walk through
1893                                  * the attributeDescriptions one by one they should match in
1894                                  * lock step. If not, we signal a change. Otherwise we test
1895                                  * all the values...
1896                                  */
1897                                 for ( old = rs->sr_entry->e_attrs, new = dni->new_entry->e_attrs;
1898                                                 old && new;
1899                                                 old = old->a_next, new = new->a_next )
1900                                 {
1901                                         if ( old->a_desc != new->a_desc ) {
1902                                                 dni->wasChanged = 1;
1903                                                 break;
1904                                         }
1905                                         for ( i = 0; ; i++ ) {
1906                                                 int nold, nnew;
1907                                                 nold = BER_BVISNULL( &old->a_vals[i] );
1908                                                 nnew = BER_BVISNULL( &new->a_vals[i] );
1909                                                 /* If both are empty, stop looking */
1910                                                 if ( nold && nnew ) {
1911                                                         break;
1912                                                 }
1913                                                 /* If they are different, stop looking */
1914                                                 if ( nold != nnew ) {
1915                                                         dni->wasChanged = 1;
1916                                                         break;
1917                                                 }
1918                                                 if ( ber_bvcmp( &old->a_vals[i], &new->a_vals[i] )) {
1919                                                         dni->wasChanged = 1;
1920                                                         break;
1921                                                 }
1922                                         }
1923                                         if ( dni->wasChanged ) break;
1924                                 }
1925                                 if ( dni->wasChanged ) {
1926                                         dni->ads = op->o_tmpalloc( dni->attrs *
1927                                                 sizeof(AttributeDescription *), op->o_tmpmemctx );
1928                                         i = 0;
1929                                         for ( old = rs->sr_entry->e_attrs; old; old = old->a_next ) {
1930                                                 dni->ads[i] = old->a_desc;
1931                                                 i++;
1932                                         }
1933                                 }
1934                         }
1935                 }
1936         } else if ( rs->sr_type == REP_RESULT ) {
1937                 if ( rs->sr_err == LDAP_SIZELIMIT_EXCEEDED ) {
1938                         Debug( LDAP_DEBUG_ANY,
1939                                 "dn_callback : consistency error - "
1940                                 "entryUUID is not unique\n", 0, 0, 0 );
1941                 }
1942         }
1943
1944         return LDAP_SUCCESS;
1945 }
1946
1947 static int
1948 nonpresent_callback(
1949         Operation*      op,
1950         SlapReply*      rs )
1951 {
1952         syncinfo_t *si = op->o_callback->sc_private;
1953         Attribute *a;
1954         int count = 0;
1955         struct berval* present_uuid = NULL;
1956         struct nonpresent_entry *np_entry;
1957
1958         if ( rs->sr_type == REP_RESULT ) {
1959                 count = avl_free( si->si_presentlist, avl_ber_bvfree );
1960                 si->si_presentlist = NULL;
1961
1962         } else if ( rs->sr_type == REP_SEARCH ) {
1963                 if ( !(si->si_refreshDelete & NP_DELETE_ONE )) {
1964                         a = attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_entryUUID );
1965
1966                         if ( a == NULL ) return 0;
1967
1968                         present_uuid = avl_find( si->si_presentlist, &a->a_nvals[0],
1969                                 syncuuid_cmp );
1970                 }
1971
1972                 if ( present_uuid == NULL ) {
1973                         np_entry = (struct nonpresent_entry *)
1974                                 ch_calloc( 1, sizeof( struct nonpresent_entry ));
1975                         np_entry->npe_name = ber_dupbv( NULL, &rs->sr_entry->e_name );
1976                         np_entry->npe_nname = ber_dupbv( NULL, &rs->sr_entry->e_nname );
1977                         LDAP_LIST_INSERT_HEAD( &si->si_nonpresentlist, np_entry, npe_link );
1978
1979                 } else {
1980                         avl_delete( &si->si_presentlist,
1981                                         &a->a_nvals[0], syncuuid_cmp );
1982                         ch_free( present_uuid->bv_val );
1983                         ch_free( present_uuid );
1984                 }
1985         }
1986         return LDAP_SUCCESS;
1987 }
1988
1989 static int
1990 null_callback(
1991         Operation*      op,
1992         SlapReply*      rs )
1993 {
1994         if ( rs->sr_err != LDAP_SUCCESS &&
1995                 rs->sr_err != LDAP_REFERRAL &&
1996                 rs->sr_err != LDAP_ALREADY_EXISTS &&
1997                 rs->sr_err != LDAP_NO_SUCH_OBJECT &&
1998                 rs->sr_err != LDAP_NOT_ALLOWED_ON_NONLEAF )
1999         {
2000                 Debug( LDAP_DEBUG_ANY,
2001                         "null_callback : error code 0x%x\n",
2002                         rs->sr_err, 0, 0 );
2003         }
2004         return LDAP_SUCCESS;
2005 }
2006
2007 struct berval *
2008 slap_uuidstr_from_normalized(
2009         struct berval* uuidstr,
2010         struct berval* normalized,
2011         void *ctx )
2012 {
2013         struct berval *new;
2014         unsigned char nibble;
2015         int i, d = 0;
2016
2017         if ( normalized == NULL ) return NULL;
2018         if ( normalized->bv_len != 16 ) return NULL;
2019
2020         if ( uuidstr ) {
2021                 new = uuidstr;
2022         } else {
2023                 new = (struct berval *)slap_sl_malloc( sizeof(struct berval), ctx );
2024                 if ( new == NULL ) {
2025                         return NULL;
2026                 }
2027         }
2028
2029         new->bv_len = 36;
2030
2031         if ( ( new->bv_val = slap_sl_malloc( new->bv_len + 1, ctx ) ) == NULL ) {
2032                 if ( new != uuidstr ) {
2033                         slap_sl_free( new, ctx );
2034                 }
2035                 return NULL;
2036         }
2037
2038         for ( i = 0; i < 16; i++ ) {
2039                 if ( i == 4 || i == 6 || i == 8 || i == 10 ) {
2040                         new->bv_val[(i<<1)+d] = '-';
2041                         d += 1;
2042                 }
2043
2044                 nibble = (normalized->bv_val[i] >> 4) & 0xF;
2045                 if ( nibble < 10 ) {
2046                         new->bv_val[(i<<1)+d] = nibble + '0';
2047                 } else {
2048                         new->bv_val[(i<<1)+d] = nibble - 10 + 'a';
2049                 }
2050
2051                 nibble = (normalized->bv_val[i]) & 0xF;
2052                 if ( nibble < 10 ) {
2053                         new->bv_val[(i<<1)+d+1] = nibble + '0';
2054                 } else {
2055                         new->bv_val[(i<<1)+d+1] = nibble - 10 + 'a';
2056                 }
2057         }
2058
2059         new->bv_val[new->bv_len] = '\0';
2060         return new;
2061 }
2062
2063 static int
2064 syncuuid_cmp( const void* v_uuid1, const void* v_uuid2 )
2065 {
2066         const struct berval *uuid1 = v_uuid1;
2067         const struct berval *uuid2 = v_uuid2;
2068         int rc = uuid1->bv_len - uuid2->bv_len;
2069         if ( rc ) return rc;
2070         return ( memcmp( uuid1->bv_val, uuid2->bv_val, uuid1->bv_len ) );
2071 }
2072
2073 static void
2074 avl_ber_bvfree( void *v_bv )
2075 {
2076         struct berval   *bv = (struct berval *)v_bv;
2077
2078         if( v_bv == NULL ) return;
2079         if ( !BER_BVISNULL( bv ) ) {
2080                 ch_free( bv->bv_val );
2081         }
2082         ch_free( (char *) bv );
2083 }
2084
2085 void
2086 syncinfo_free( syncinfo_t *sie )
2087 {
2088         ldap_pvt_thread_mutex_destroy( &sie->si_mutex );
2089         if ( !BER_BVISNULL( &sie->si_provideruri ) ) {
2090                 ch_free( sie->si_provideruri.bv_val );
2091         }
2092
2093         bindconf_free( &sie->si_bindconf );
2094
2095         if ( sie->si_filterstr.bv_val ) {
2096                 ch_free( sie->si_filterstr.bv_val );
2097         }
2098         if ( sie->si_base.bv_val ) {
2099                 ch_free( sie->si_base.bv_val );
2100         }
2101         if ( sie->si_attrs ) {
2102                 int i = 0;
2103                 while ( sie->si_attrs[i] != NULL ) {
2104                         ch_free( sie->si_attrs[i] );
2105                         i++;
2106                 }
2107                 ch_free( sie->si_attrs );
2108         }
2109         if ( sie->si_exattrs ) {
2110                 int i = 0;
2111                 while ( sie->si_exattrs[i] != NULL ) {
2112                         ch_free( sie->si_exattrs[i] );
2113                         i++;
2114                 }
2115                 ch_free( sie->si_exattrs );
2116         }
2117         if ( sie->si_anlist ) {
2118                 int i = 0;
2119                 while ( sie->si_anlist[i].an_name.bv_val != NULL ) {
2120                         ch_free( sie->si_anlist[i].an_name.bv_val );
2121                         i++;
2122                 }
2123                 ch_free( sie->si_anlist );
2124         }
2125         if ( sie->si_exanlist ) {
2126                 int i = 0;
2127                 while ( sie->si_exanlist[i].an_name.bv_val != NULL ) {
2128                         ch_free( sie->si_exanlist[i].an_name.bv_val );
2129                         i++;
2130                 }
2131                 ch_free( sie->si_exanlist );
2132         }
2133         if ( sie->si_retryinterval ) {
2134                 ch_free( sie->si_retryinterval );
2135         }
2136         if ( sie->si_retrynum ) {
2137                 ch_free( sie->si_retrynum );
2138         }
2139         if ( sie->si_retrynum_init ) {
2140                 ch_free( sie->si_retrynum_init );
2141         }
2142         slap_sync_cookie_free( &sie->si_syncCookie, 0 );
2143         if ( sie->si_presentlist ) {
2144             avl_free( sie->si_presentlist, avl_ber_bvfree );
2145         }
2146         if ( sie->si_ld ) {
2147                 ldap_ld_free( sie->si_ld, 1, NULL, NULL );
2148         }
2149         while ( !LDAP_LIST_EMPTY( &sie->si_nonpresentlist )) {
2150                 struct nonpresent_entry* npe;
2151                 npe = LDAP_LIST_FIRST( &sie->si_nonpresentlist );
2152                 LDAP_LIST_REMOVE( npe, npe_link );
2153                 if ( npe->npe_name ) {
2154                         if ( npe->npe_name->bv_val ) {
2155                                 ch_free( npe->npe_name->bv_val );
2156                         }
2157                         ch_free( npe->npe_name );
2158                 }
2159                 if ( npe->npe_nname ) {
2160                         if ( npe->npe_nname->bv_val ) {
2161                                 ch_free( npe->npe_nname->bv_val );
2162                         }
2163                         ch_free( npe->npe_nname );
2164                 }
2165                 ch_free( npe );
2166         }
2167         ch_free( sie );
2168 }