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,
 326                         si->si_bindconf.sb_saslmech.bv_val,
 327                         si->si_bindconf.sb_realm.bv_val,
 328                         si->si_bindconf.sb_authcId.bv_val,
 329                         si->si_bindconf.sb_cred.bv_val,
 330                         si->si_bindconf.sb_authzId.bv_val );
 331
 332                 rc = ldap_sasl_interactive_bind_s( si->si_ld,
 333                                 si->si_bindconf.sb_binddn.bv_val,
 334                                 si->si_bindconf.sb_saslmech.bv_val,
 335                                 NULL, NULL,
 336                                 LDAP_SASL_QUIET,
 337                                 lutil_sasl_interact,
 338                                 defaults );
 339
 340                 lutil_sasl_freedefs( defaults );
 341
 342                 /* FIXME: different error behaviors according to
 343                  *      1) return code
 344                  *      2) on err policy : exit, retry, backoff ...
 345                  */
 346                 if ( rc != LDAP_SUCCESS ) {
 347                         static struct berval bv_GSSAPI = BER_BVC( "GSSAPI" );
 348
 349                         Debug( LDAP_DEBUG_ANY, "do_syncrep1: "
 350                                 "ldap_sasl_interactive_bind_s failed (%d)\n",
 351                                 rc, 0, 0 );
 352
 353                         /* FIXME (see above comment) */
 354                         /* if Kerberos credentials cache is not active, retry */
 355                         if ( ber_bvcmp( &si->si_bindconf.sb_saslmech, &bv_GSSAPI ) == 0 &&
 356                                 rc == LDAP_LOCAL_ERROR )
 357                         {
 358                                 rc = LDAP_SERVER_DOWN;
 359                         }
 360
 361                         goto done;
 362                 }
 363 #else /* HAVE_CYRUS_SASL */
 364                 /* Should never get here, we trapped this at config time */
 365                 assert(0);
 366                 fprintf( stderr, "not compiled with SASL support\n" );
 367                 rc = LDAP_OTHER;
 368                 goto done;
 369 #endif
 370
 371         } else if ( si->si_bindconf.sb_method == LDAP_AUTH_SIMPLE ) {
 372                 rc = ldap_sasl_bind_s( si->si_ld,
 373                         si->si_bindconf.sb_binddn.bv_val, LDAP_SASL_SIMPLE,
 374                         &si->si_bindconf.sb_cred, NULL, NULL, NULL );
 375                 if ( rc != LDAP_SUCCESS ) {
 376                         Debug( LDAP_DEBUG_ANY, "do_syncrep1: "
 377                                 "ldap_sasl_bind_s failed (%d)\n", rc, 0, 0 );
 378                         goto done;
 379                 }
 380         }
 381
 382         /* Set SSF to strongest of TLS, SASL SSFs */
 383         op->o_sasl_ssf = 0;
 384         op->o_tls_ssf = 0;
 385         op->o_transport_ssf = 0;
 386 #ifdef HAVE_TLS
 387         if ( ldap_get_option( si->si_ld, LDAP_OPT_X_TLS_SSL_CTX, &ssl )
 388                 == LDAP_SUCCESS && ssl != NULL )
 389         {
 390                 op->o_tls_ssf = ldap_pvt_tls_get_strength( ssl );
 391         }
 392 #endif /* HAVE_TLS */
 393         ldap_get_option( si->si_ld, LDAP_OPT_X_SASL_SSF, &op->o_sasl_ssf );
 394         op->o_ssf = ( op->o_sasl_ssf > op->o_tls_ssf )
 395                 ?  op->o_sasl_ssf : op->o_tls_ssf;
 396
 397
 398         if ( BER_BVISNULL( &si->si_syncCookie.octet_str )) {
 399                 /* get contextCSN shadow replica from database */
 400                 BerVarray csn = NULL;
 401
 402                 assert( si->si_rid < 1000 );
 403                 op->o_req_ndn = op->o_bd->be_nsuffix[0];
 404                 op->o_req_dn = op->o_req_ndn;
 405
 406                 /* try to read stored contextCSN */
 407                 backend_attribute( op, NULL, &op->o_req_ndn,
 408                         slap_schema.si_ad_contextCSN, &csn, ACL_READ );
 409                 if ( csn ) {
 410                         ch_free( si->si_syncCookie.ctxcsn.bv_val );
 411                         ber_dupbv( &si->si_syncCookie.ctxcsn, csn );
 412                         ber_bvarray_free_x( csn, op->o_tmpmemctx );
 413                 }
 414
 415                 si->si_syncCookie.rid = si->si_rid;
 416
 417                 LDAP_STAILQ_FOREACH( sc, &slap_sync_cookie, sc_next ) {
 418                         if ( si->si_rid == sc->rid ) {
 419                                 cmdline_cookie_found = 1;
 420                                 break;
 421                         }
 422                 }
 423
 424                 if ( cmdline_cookie_found ) {
 425                         /* cookie is supplied in the command line */
 426
 427                         LDAP_STAILQ_REMOVE( &slap_sync_cookie, sc, sync_cookie, sc_next );
 428
 429                         if ( BER_BVISNULL( &sc->ctxcsn ) ) {
 430                                 /* if cmdline cookie does not have ctxcsn */
 431                                 /* component, set it to an initial value */
 432                                 slap_init_sync_cookie_ctxcsn( sc );
 433                         }
 434                         slap_sync_cookie_free( &si->si_syncCookie, 0 );
 435                         slap_dup_sync_cookie( &si->si_syncCookie, sc );
 436                         slap_sync_cookie_free( sc, 1 );
 437                 }
 438
 439                 slap_compose_sync_cookie( NULL, &si->si_syncCookie.octet_str,
 440                         &si->si_syncCookie.ctxcsn, si->si_syncCookie.rid );
 441         }
 442
 443         rc = ldap_sync_search( si, op->o_tmpmemctx );
 444
 445         if( rc != LDAP_SUCCESS ) {
 446                 Debug( LDAP_DEBUG_ANY, "do_syncrep1: "
 447                         "ldap_search_ext: %s (%d)\n", ldap_err2string( rc ), rc, 0 );
 448         }
 449
 450 done:
 451         if ( rc ) {
 452                 if ( si->si_ld ) {
 453                         ldap_unbind_ext( si->si_ld, NULL, NULL );
 454                         si->si_ld = NULL;
 455                 }
 456         }
 457
 458         return rc;
 459 }
 460
 461 static int
 462 do_syncrep2(
 463         Operation *op,
 464         syncinfo_t *si )
 465 {
 466         LDAPControl     **rctrls = NULL;
 467         LDAPControl     *rctrlp;
 468
 469         BerElementBuffer berbuf;
 470         BerElement      *ber = (BerElement *)&berbuf;
 471
 472         LDAPMessage     *res = NULL;
 473         LDAPMessage     *msg = NULL;
 474
 475         char            *retoid = NULL;
 476         struct berval   *retdata = NULL;
 477
 478         Entry           *entry = NULL;
 479
 480         int             syncstate;
 481         struct berval   syncUUID = BER_BVNULL;
 482         struct sync_cookie      syncCookie = { 0 };
 483         struct sync_cookie      syncCookie_req = { 0 };
 484         struct berval           cookie = BER_BVNULL;
 485
 486         int     rc, err, i;
 487         ber_len_t       len;
 488
 489         int rc_efree = 1;
 490
 491         struct berval   *psub;
 492         Modifications   *modlist = NULL;
 493
 494         const char              *text;
 495         int                             match;
 496
 497         struct timeval *tout_p = NULL;
 498         struct timeval tout = { 0, 0 };
 499
 500         int             refreshDeletes = 0;
 501         int             refreshDone = 1;
 502         BerVarray syncUUIDs = NULL;
 503         ber_tag_t si_tag;
 504
 505         if ( slapd_shutdown ) {
 506                 rc = -2;
 507                 goto done;
 508         }
 509
 510         ber_init2( ber, NULL, LBER_USE_DER );
 511         ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
 512
 513         Debug( LDAP_DEBUG_TRACE, "=>do_syncrep2\n", 0, 0, 0 );
 514
 515         psub = &si->si_be->be_nsuffix[0];
 516
 517         slap_dup_sync_cookie( &syncCookie_req, &si->si_syncCookie );
 518
 519         if ( abs(si->si_type) == LDAP_SYNC_REFRESH_AND_PERSIST ) {
 520                 tout_p = &tout;
 521         } else {
 522                 tout_p = NULL;
 523         }
 524
 525         while (( rc = ldap_result( si->si_ld, LDAP_RES_ANY, LDAP_MSG_ONE,
 526                 tout_p, &res )) > 0 )
 527         {
 528                 if ( slapd_shutdown ) {
 529                         rc = -2;
 530                         goto done;
 531                 }
 532                 for( msg = ldap_first_message( si->si_ld, res );
 533                         msg != NULL;
 534                         msg = ldap_next_message( si->si_ld, msg ) )
 535                 {
 536                         if ( slapd_shutdown ) {
 537                                 rc = -2;
 538                                 goto done;
 539                         }
 540                         switch( ldap_msgtype( msg ) ) {
 541                         case LDAP_RES_SEARCH_ENTRY:
 542                                 ldap_get_entry_controls( si->si_ld, msg, &rctrls );
 543                                 /* we can't work without the control */
 544                                 if ( !rctrls ) {
 545                                         Debug( LDAP_DEBUG_ANY, "do_syncrep2: "
 546                                                 "got search entry without "
 547                                                 "control\n", 0, 0, 0 );
 548                                         rc = -1;
 549                                         goto done;
 550                                 }
 551                                 rctrlp = *rctrls;
 552                                 ber_init2( ber, &rctrlp->ldctl_value, LBER_USE_DER );
 553                                 ber_scanf( ber, "{em" /*"}"*/, &syncstate, &syncUUID );
 554                                 if ( ber_peek_tag( ber, &len ) == LDAP_TAG_SYNC_COOKIE ) {
 555                                         ber_scanf( ber, /*"{"*/ "m}", &cookie );
 556                                         if ( !BER_BVISNULL( &cookie ) ) {
 557                                                 ch_free( syncCookie.octet_str.bv_val );
 558                                                 ber_dupbv( &syncCookie.octet_str, &cookie );
 559                                         }
 560                                         if ( !BER_BVISNULL( &syncCookie.octet_str ) )
 561                                         {
 562                                                 slap_parse_sync_cookie( &syncCookie );
 563                                         }
 564                                 }
 565                                 if ( syncrepl_message_to_entry( si, op, msg,
 566                                         &modlist, &entry, syncstate ) == LDAP_SUCCESS ) {
 567                                         rc_efree = syncrepl_entry( si, op, entry, &modlist,
 568                                                 syncstate, &syncUUID, &syncCookie_req, &syncCookie.ctxcsn );
 569                                         if ( !BER_BVISNULL( &syncCookie.octet_str ) )
 570                                         {
 571                                                 syncrepl_updateCookie( si, op, psub, &syncCookie );
 572                                         }
 573                                 }
 574                                 ldap_controls_free( rctrls );
 575                                 if ( modlist ) {
 576                                         slap_mods_free( modlist );
 577                                 }
 578                                 if ( rc_efree && entry ) {
 579                                         entry_free( entry );
 580                                 }
 581                                 entry = NULL;
 582                                 break;
 583
 584                         case LDAP_RES_SEARCH_REFERENCE:
 585                                 Debug( LDAP_DEBUG_ANY,
 586                                         "do_syncrep2: reference received error\n", 0, 0, 0 );
 587                                 break;
 588
 589                         case LDAP_RES_SEARCH_RESULT:
 590                                 Debug( LDAP_DEBUG_SYNC,
 591                                         "do_syncrep2: LDAP_RES_SEARCH_RESULT\n", 0, 0, 0 );
 592                                 ldap_parse_result( si->si_ld, msg, &err, NULL, NULL, NULL,
 593                                         &rctrls, 0 );
 594                                 if ( rctrls ) {
 595                                         rctrlp = *rctrls;
 596                                         ber_init2( ber, &rctrlp->ldctl_value, LBER_USE_DER );
 597
 598                                         ber_scanf( ber, "{" /*"}"*/);
 599                                         if ( ber_peek_tag( ber, &len ) == LDAP_TAG_SYNC_COOKIE ) {
 600                                                 ber_scanf( ber, "m", &cookie );
 601                                                 if ( !BER_BVISNULL( &cookie ) ) {
 602                                                         ch_free( syncCookie.octet_str.bv_val );
 603                                                         ber_dupbv( &syncCookie.octet_str, &cookie);
 604                                                 }
 605                                                 if ( !BER_BVISNULL( &syncCookie.octet_str ) )
 606                                                 {
 607                                                         slap_parse_sync_cookie( &syncCookie );
 608                                                 }
 609                                         }
 610                                         if ( ber_peek_tag( ber, &len ) == LDAP_TAG_REFRESHDELETES )
 611                                         {
 612                                                 ber_scanf( ber, "b", &refreshDeletes );
 613                                         }
 614                                         ber_scanf( ber, /*"{"*/ "}" );
 615                                 }
 616                                 if ( BER_BVISNULL( &syncCookie_req.ctxcsn )) {
 617                                         match = -1;
 618                                 } else if ( BER_BVISNULL( &syncCookie.ctxcsn )) {
 619                                         match = 1;
 620                                 } else {
 621                                         value_match( &match, slap_schema.si_ad_entryCSN,
 622                                                 slap_schema.si_ad_entryCSN->ad_type->sat_ordering,
 623                                                 SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
 624                                                 &syncCookie_req.ctxcsn, &syncCookie.ctxcsn,
 625                                                 &text );
 626                                 }
 627                                 if ( !BER_BVISNULL( &syncCookie.octet_str ) &&
 628                                         match < 0 && err == LDAP_SUCCESS )
 629                                 {
 630                                         syncrepl_updateCookie( si, op, psub, &syncCookie );
 631                                 }
 632                                 if ( rctrls ) {
 633                                         ldap_controls_free( rctrls );
 634                                 }
 635                                 if (si->si_type != LDAP_SYNC_REFRESH_AND_PERSIST) {
 636                                         /* FIXME : different error behaviors according to
 637                                          *      1) err code : LDAP_BUSY ...
 638                                          *      2) on err policy : stop service, stop sync, retry
 639                                          */
 640                                         if ( refreshDeletes == 0 && match < 0 &&
 641                                                 err == LDAP_SUCCESS )
 642                                         {
 643                                                 syncrepl_del_nonpresent( op, si, NULL );
 644                                         } else {
 645                                                 avl_free( si->si_presentlist, avl_ber_bvfree );
 646                                                 si->si_presentlist = NULL;
 647                                         }
 648                                 }
 649                                 rc = -2;
 650                                 goto done;
 651                                 break;
 652
 653                         case LDAP_RES_INTERMEDIATE:
 654                                 rc = ldap_parse_intermediate( si->si_ld, msg,
 655                                         &retoid, &retdata, NULL, 0 );
 656                                 if ( !rc && !strcmp( retoid, LDAP_SYNC_INFO ) ) {
 657                                         ber_init2( ber, retdata, LBER_USE_DER );
 658
 659                                         switch ( si_tag = ber_peek_tag( ber, &len )) {
 660                                         ber_tag_t tag;
 661                                         case LDAP_TAG_SYNC_NEW_COOKIE:
 662                                                 Debug( LDAP_DEBUG_SYNC,
 663                                                         "do_syncrep2: %s - %s%s\n",
 664                                                         "LDAP_RES_INTERMEDIATE",
 665                                                         "NEW_COOKIE", "\n" );
 666                                                 ber_scanf( ber, "tm", &tag, &cookie );
 667                                                 break;
 668                                         case LDAP_TAG_SYNC_REFRESH_DELETE:
 669                                         case LDAP_TAG_SYNC_REFRESH_PRESENT:
 670                                                 Debug( LDAP_DEBUG_SYNC,
 671                                                         "do_syncrep2: %s - %s%s\n",
 672                                                         "LDAP_RES_INTERMEDIATE",
 673                                                         si_tag == LDAP_TAG_SYNC_REFRESH_PRESENT ?
 674                                                         "REFRESH_PRESENT" : "REFRESH_DELETE",
 675                                                         "\n" );
 676                                                 if ( si_tag == LDAP_TAG_SYNC_REFRESH_DELETE ) {
 677                                                         si->si_refreshDelete = 1;
 678                                                 } else {
 679                                                         si->si_refreshPresent = 1;
 680                                                 }
 681                                                 ber_scanf( ber, "t{" /*"}"*/, &tag );
 682                                                 if ( ber_peek_tag( ber, &len ) == LDAP_TAG_SYNC_COOKIE )
 683                                                 {
 684                                                         ber_scanf( ber, "m", &cookie );
 685                                                         if ( !BER_BVISNULL( &cookie ) ) {
 686                                                                 ch_free( syncCookie.octet_str.bv_val );
 687                                                                 ber_dupbv( &syncCookie.octet_str, &cookie );
 688                                                         }
 689                                                         if ( !BER_BVISNULL( &syncCookie.octet_str ) )
 690                                                         {
 691                                                                 slap_parse_sync_cookie( &syncCookie );
 692                                                         }
 693                                                 }
 694                                                 if ( ber_peek_tag( ber, &len ) ==
 695                                                         LDAP_TAG_REFRESHDONE )
 696                                                 {
 697                                                         ber_scanf( ber, "b", &refreshDone );
 698                                                 }
 699                                                 ber_scanf( ber, /*"{"*/ "}" );
 700                                                 break;
 701                                         case LDAP_TAG_SYNC_ID_SET:
 702                                                 Debug( LDAP_DEBUG_SYNC,
 703                                                         "do_syncrep2: %s - %s%s\n",
 704                                                         "LDAP_RES_INTERMEDIATE",
 705                                                         "SYNC_ID_SET",
 706                                                         "\n" );
 707                                                 ber_scanf( ber, "t{" /*"}"*/, &tag );
 708                                                 if ( ber_peek_tag( ber, &len ) ==
 709                                                         LDAP_TAG_SYNC_COOKIE )
 710                                                 {
 711                                                         ber_scanf( ber, "m", &cookie );
 712                                                         if ( !BER_BVISNULL( &cookie ) ) {
 713                                                                 ch_free( syncCookie.octet_str.bv_val );
 714                                                                 ber_dupbv( &syncCookie.octet_str, &cookie );
 715                                                         }
 716                                                         if ( !BER_BVISNULL( &syncCookie.octet_str ) )
 717                                                         {
 718                                                                 slap_parse_sync_cookie( &syncCookie );
 719                                                         }
 720                                                 }
 721                                                 if ( ber_peek_tag( ber, &len ) ==
 722                                                         LDAP_TAG_REFRESHDELETES )
 723                                                 {
 724                                                         ber_scanf( ber, "b", &refreshDeletes );
 725                                                 }
 726                                                 ber_scanf( ber, "[W]", &syncUUIDs );
 727                                                 ber_scanf( ber, /*"{"*/ "}" );
 728                                                 if ( refreshDeletes ) {
 729                                                         syncrepl_del_nonpresent( op, si, syncUUIDs );
 730                                                         ber_bvarray_free_x( syncUUIDs, op->o_tmpmemctx );
 731                                                 } else {
 732                                                         for ( i = 0; !BER_BVISNULL( &syncUUIDs[i] ); i++ ) {
 733                                                                 struct berval *syncuuid_bv;
 734                                                                 syncuuid_bv = ber_dupbv( NULL, &syncUUIDs[i] );
 735                                                                 slap_sl_free( syncUUIDs[i].bv_val,op->o_tmpmemctx );
 736                                                                 avl_insert( &si->si_presentlist,
 737                                                                         (caddr_t) syncuuid_bv,
 738                                                                         syncuuid_cmp, avl_dup_error );
 739                                                         }
 740                                                         slap_sl_free( syncUUIDs, op->o_tmpmemctx );
 741                                                 }
 742                                                 break;
 743                                         default:
 744                                                 Debug( LDAP_DEBUG_ANY,
 745                                                         "do_syncrep2 : unknown syncinfo tag (%ld)\n",
 746                                                 (long) si_tag, 0, 0 );
 747                                                 ldap_memfree( retoid );
 748                                                 ber_bvfree( retdata );
 749                                                 continue;
 750                                         }
 751
 752                                         if ( BER_BVISNULL( &syncCookie_req.ctxcsn )) {
 753                                                 match = -1;
 754                                         } else if ( BER_BVISNULL( &syncCookie.ctxcsn )) {
 755                                                 match = 1;
 756                                         } else {
 757                                                 value_match( &match, slap_schema.si_ad_entryCSN,
 758                                                         slap_schema.si_ad_entryCSN->ad_type->sat_ordering,
 759                                                         SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
 760                                                         &syncCookie_req.ctxcsn,
 761                                                         &syncCookie.ctxcsn, &text );
 762                                         }
 763
 764                                         if ( !BER_BVISNULL( &syncCookie.ctxcsn ) &&
 765                                                 match < 0 )
 766                                         {
 767                                                 syncrepl_updateCookie( si, op, psub, &syncCookie);
 768                                         }
 769
 770                                         if ( si->si_refreshPresent == 1 ) {
 771                                                 if ( match < 0 ) {
 772                                                         syncrepl_del_nonpresent( op, si, NULL );
 773                                                 }
 774                                         }
 775
 776                                         ldap_memfree( retoid );
 777                                         ber_bvfree( retdata );
 778                                         break;
 779
 780                                 } else {
 781                                         Debug( LDAP_DEBUG_ANY, "do_syncrep2 : "
 782                                                 "unknown intermediate response (%d)\n",
 783                                                 rc, 0, 0 );
 784                                         ldap_memfree( retoid );
 785                                         ber_bvfree( retdata );
 786                                         break;
 787                                 }
 788                                 break;
 789
 790                         default:
 791                                 Debug( LDAP_DEBUG_ANY, "do_syncrep2 : "
 792                                         "unknown message\n", 0, 0, 0 );
 793                                 break;
 794
 795                         }
 796                         if ( !BER_BVISNULL( &syncCookie.octet_str )) {
 797                                 slap_sync_cookie_free( &syncCookie_req, 0 );
 798                                 slap_dup_sync_cookie( &syncCookie_req, &syncCookie );
 799                                 slap_sync_cookie_free( &syncCookie, 0 );
 800                         }
 801                 }
 802                 ldap_msgfree( res );
 803                 res = NULL;
 804         }
 805
 806         if ( rc == -1 ) {
 807                 const char *errstr;
 808
 809                 ldap_get_option( si->si_ld, LDAP_OPT_ERROR_NUMBER, &rc );
 810                 errstr = ldap_err2string( rc );
 811
 812                 Debug( LDAP_DEBUG_ANY,
 813                         "do_syncrep2 : %s\n", errstr, 0, 0 );
 814         }
 815
 816 done:
 817         slap_sync_cookie_free( &syncCookie, 0 );
 818         slap_sync_cookie_free( &syncCookie_req, 0 );
 819
 820         if ( res ) ldap_msgfree( res );
 821
 822         if ( rc && si->si_ld ) {
 823                 ldap_unbind_ext( si->si_ld, NULL, NULL );
 824                 si->si_ld = NULL;
 825         }
 826
 827         return rc;
 828 }
 829
 830 void *
 831 do_syncrepl(
 832         void    *ctx,
 833         void    *arg )
 834 {
 835         struct re_s* rtask = arg;
 836         syncinfo_t *si = ( syncinfo_t * ) rtask->arg;
 837         Connection conn = {0};
 838         char opbuf[OPERATION_BUFFER_SIZE];
 839         Operation *op;
 840         int rc = LDAP_SUCCESS;
 841         int first = 0;
 842         int dostop = 0;
 843         ber_socket_t s;
 844         int i, defer = 1;
 845         Backend *be;
 846
 847         Debug( LDAP_DEBUG_TRACE, "=>do_syncrepl\n", 0, 0, 0 );
 848
 849         if ( si == NULL )
 850                 return NULL;
 851
 852         ldap_pvt_thread_mutex_lock( &si->si_mutex );
 853
 854         switch( abs( si->si_type )) {
 855         case LDAP_SYNC_REFRESH_ONLY:
 856         case LDAP_SYNC_REFRESH_AND_PERSIST:
 857                 break;
 858         default:
 859                 ldap_pvt_thread_mutex_unlock( &si->si_mutex );
 860                 return NULL;
 861         }
 862
 863         if ( slapd_shutdown ) {
 864                 if ( si->si_ld ) {
 865                         ldap_get_option( si->si_ld, LDAP_OPT_DESC, &s );
 866                         connection_client_stop( s );
 867                         ldap_unbind_ext( si->si_ld, NULL, NULL );
 868                         si->si_ld = NULL;
 869                 }
 870                 ldap_pvt_thread_mutex_unlock( &si->si_mutex );
 871                 return NULL;
 872         }
 873
 874         op = (Operation *)opbuf;
 875         connection_fake_init( &conn, op, ctx );
 876
 877         /* use global malloc for now */
 878         op->o_tmpmemctx = NULL;
 879         op->o_tmpmfuncs = &ch_mfuncs;
 880
 881         op->o_managedsait = SLAP_CONTROL_NONCRITICAL;
 882         op->o_bd = be = si->si_be;
 883         op->o_dn = op->o_bd->be_rootdn;
 884         op->o_ndn = op->o_bd->be_rootndn;
 885
 886         /* Establish session, do search */
 887         if ( !si->si_ld ) {
 888                 first = 1;
 889                 si->si_refreshDelete = 0;
 890                 si->si_refreshPresent = 0;
 891                 rc = do_syncrep1( op, si );
 892         }
 893
 894         /* Process results */
 895         if ( rc == LDAP_SUCCESS ) {
 896                 ldap_get_option( si->si_ld, LDAP_OPT_DESC, &s );
 897
 898                 rc = do_syncrep2( op, si );
 899
 900                 if ( abs(si->si_type) == LDAP_SYNC_REFRESH_AND_PERSIST ) {
 901                         /* If we succeeded, enable the connection for further listening.
 902                          * If we failed, tear down the connection and reschedule.
 903                          */
 904                         if ( rc == LDAP_SUCCESS ) {
 905                                 if ( first ) {
 906                                         rc = connection_client_setup( s, do_syncrepl, arg );
 907                                 } else {
 908                                         connection_client_enable( s );
 909                                 }
 910                         } else if ( !first ) {
 911                                 dostop = 1;
 912                         }
 913                 } else {
 914                         if ( rc == -2 ) rc = 0;
 915                 }
 916         }
 917
 918         /* At this point, we have 4 cases:
 919          * 1) for any hard failure, give up and remove this task
 920          * 2) for ServerDown, reschedule this task to run
 921          * 3) for Refresh and Success, reschedule to run
 922          * 4) for Persist and Success, reschedule to defer
 923          */
 924         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 925
 926         if ( ldap_pvt_runqueue_isrunning( &slapd_rq, rtask )) {
 927                 ldap_pvt_runqueue_stoptask( &slapd_rq, rtask );
 928         }
 929
 930         if ( dostop ) {
 931                 connection_client_stop( s );
 932         }
 933
 934         if ( rc == LDAP_SUCCESS ) {
 935                 if ( si->si_type == LDAP_SYNC_REFRESH_ONLY ) {
 936                         defer = 0;
 937                 }
 938                 rtask->interval.tv_sec = si->si_interval;
 939                 ldap_pvt_runqueue_resched( &slapd_rq, rtask, defer );
 940                 if ( si->si_retrynum ) {
 941                         for ( i = 0; si->si_retrynum_init[i] != -2; i++ ) {
 942                                 si->si_retrynum[i] = si->si_retrynum_init[i];
 943                         }
 944                         si->si_retrynum[i] = -2;
 945                 }
 946         } else {
 947                 for ( i = 0; si->si_retrynum && si->si_retrynum[i] <= 0; i++ ) {
 948                         if ( si->si_retrynum[i] == -1  || si->si_retrynum[i] == -2 )
 949                                 break;
 950                 }
 951
 952                 if ( !si->si_retrynum || si->si_retrynum[i] == -2 ) {
 953                         ldap_pvt_runqueue_remove( &slapd_rq, rtask );
 954                 } else if ( si->si_retrynum[i] >= -1 ) {
 955                         if ( si->si_retrynum[i] > 0 )
 956                                 si->si_retrynum[i]--;
 957                         rtask->interval.tv_sec = si->si_retryinterval[i];
 958                         ldap_pvt_runqueue_resched( &slapd_rq, rtask, 0 );
 959                         slap_wake_listener();
 960                 }
 961         }
 962
 963         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 964         ldap_pvt_thread_mutex_unlock( &si->si_mutex );
 965
 966         return NULL;
 967 }
 968
 969 int
 970 syncrepl_message_to_entry(
 971         syncinfo_t      *si,
 972         Operation       *op,
 973         LDAPMessage     *msg,
 974         Modifications   **modlist,
 975         Entry                   **entry,
 976         int             syncstate
 977 )
 978 {
 979         Entry           *e = NULL;
 980         BerElement      *ber = NULL;
 981         Modifications   tmp;
 982         Modifications   *mod;
 983         Modifications   **modtail = modlist;
 984
 985         const char      *text;
 986         char txtbuf[SLAP_TEXT_BUFLEN];
 987         size_t textlen = sizeof txtbuf;
 988
 989         struct berval   bdn = {0, NULL}, dn, ndn;
 990         int             rc;
 991
 992         *modlist = NULL;
 993
 994         if ( ldap_msgtype( msg ) != LDAP_RES_SEARCH_ENTRY ) {
 995                 Debug( LDAP_DEBUG_ANY,
 996                         "Message type should be entry (%d)", ldap_msgtype( msg ), 0, 0 );
 997                 return -1;
 998         }
 999
1000         op->o_tag = LDAP_REQ_ADD;
1001
1002         rc = ldap_get_dn_ber( si->si_ld, msg, &ber, &bdn );
1003
1004         if ( rc != LDAP_SUCCESS ) {
1005                 Debug( LDAP_DEBUG_ANY,
1006                         "syncrepl_message_to_entry : dn get failed (%d)", rc, 0, 0 );
1007                 return rc;
1008         }
1009
1010         dnPrettyNormal( NULL, &bdn, &dn, &ndn, op->o_tmpmemctx );
1011         ber_dupbv( &op->o_req_dn, &dn );
1012         ber_dupbv( &op->o_req_ndn, &ndn );
1013         slap_sl_free( ndn.bv_val, op->o_tmpmemctx );
1014         slap_sl_free( dn.bv_val, op->o_tmpmemctx );
1015
1016         if ( syncstate == LDAP_SYNC_PRESENT || syncstate == LDAP_SYNC_DELETE ) {
1017                 if ( entry )
1018                         *entry = NULL;
1019                 return LDAP_SUCCESS;
1020         }
1021
1022         if ( entry == NULL ) {
1023                 return -1;
1024         }
1025
1026         e = ( Entry * ) ch_calloc( 1, sizeof( Entry ) );
1027         *entry = e;
1028         e->e_name = op->o_req_dn;
1029         e->e_nname = op->o_req_ndn;
1030
1031         while ( ber_remaining( ber ) ) {
1032                 if ( (ber_scanf( ber, "{mW}", &tmp.sml_type, &tmp.sml_values ) ==
1033                         LBER_ERROR ) || BER_BVISNULL( &tmp.sml_type ) )
1034                 {
1035                         break;
1036                 }
1037
1038                 mod  = (Modifications *) ch_malloc( sizeof( Modifications ));
1039
1040                 mod->sml_op = LDAP_MOD_REPLACE;
1041                 mod->sml_next = NULL;
1042                 mod->sml_desc = NULL;
1043                 mod->sml_type = tmp.sml_type;
1044                 mod->sml_values = tmp.sml_values;
1045                 mod->sml_nvalues = NULL;
1046
1047                 *modtail = mod;
1048                 modtail = &mod->sml_next;
1049         }
1050
1051         if ( *modlist == NULL ) {
1052                 Debug( LDAP_DEBUG_ANY, "syncrepl_message_to_entry: no attributes\n",
1053                         0, 0, 0 );
1054                 rc = -1;
1055                 goto done;
1056         }
1057
1058         rc = slap_mods_check( *modlist, &text, txtbuf, textlen, NULL );
1059
1060         if ( rc != LDAP_SUCCESS ) {
1061                 Debug( LDAP_DEBUG_ANY, "syncrepl_message_to_entry: mods check (%s)\n",
1062                         text, 0, 0 );
1063                 goto done;
1064         }
1065
1066         /* Strip out dynamically generated attrs */
1067         for ( modtail = modlist; *modtail ; ) {
1068                 mod = *modtail;
1069                 if ( mod->sml_desc->ad_type->sat_flags & SLAP_AT_DYNAMIC ) {
1070                         *modtail = mod->sml_next;
1071                         slap_mod_free( &mod->sml_mod, 0 );
1072                         ch_free( mod );
1073                 } else {
1074                         modtail = &mod->sml_next;
1075                 }
1076         }
1077
1078         /* Strip out attrs in exattrs list */
1079         for ( modtail = modlist; *modtail ; ) {
1080                 mod = *modtail;
1081                 if ( ldap_charray_inlist( si->si_exattrs,
1082                                         mod->sml_desc->ad_type->sat_cname.bv_val )) {
1083                         *modtail = mod->sml_next;
1084                         slap_mod_free( &mod->sml_mod, 0 );
1085                         ch_free( mod );
1086                 } else {
1087                         modtail = &mod->sml_next;
1088                 }
1089         }
1090
1091         rc = slap_mods2entry( *modlist, &e, 1, 1, &text, txtbuf, textlen);
1092         if( rc != LDAP_SUCCESS ) {
1093                 Debug( LDAP_DEBUG_ANY, "syncrepl_message_to_entry: mods2entry (%s)\n",
1094                         text, 0, 0 );
1095         }
1096
1097 done:
1098         ber_free ( ber, 0 );
1099         if ( rc != LDAP_SUCCESS ) {
1100                 if ( e ) {
1101                         entry_free( e );
1102                         *entry = e = NULL;
1103                 }
1104         }
1105
1106         return rc;
1107 }
1108
1109 static struct berval generic_filterstr = BER_BVC("(objectclass=*)");
1110
1111 /* During a refresh, we may get an LDAP_SYNC_ADD for an already existing
1112  * entry if a previous refresh was interrupted before sending us a new
1113  * context state. We try to compare the new entry to the existing entry
1114  * and ignore the new entry if they are the same.
1115  *
1116  * Also, we may get an update where the entryDN has changed, due to
1117  * a ModDn on the provider. We detect this as well, so we can issue
1118  * the corresponding operation locally.
1119  *
1120  * In the case of a modify, we get a list of all the attributes
1121  * in the original entry. Rather than deleting the entry and re-adding it,
1122  * we issue a Modify request that deletes all the attributes and adds all
1123  * the new ones. This avoids the issue of trying to delete/add a non-leaf
1124  * entry.
1125  *
1126  * We don't try to otherwise distinguish ModDN from Modify; in the case of
1127  * a ModDN we will issue both operations on the local database.
1128  */
1129 typedef struct dninfo {
1130         Entry *new_entry;
1131         struct berval dn;
1132         struct berval ndn;
1133         int renamed;    /* Was an existing entry renamed? */
1134         int wasChanged; /* are the attributes changed? */
1135         int attrs;              /* how many attribute types are in the ads list */
1136         AttributeDescription **ads;
1137 } dninfo;
1138
1139 int
1140 syncrepl_entry(
1141         syncinfo_t* si,
1142         Operation *op,
1143         Entry* entry,
1144         Modifications** modlist,
1145         int syncstate,
1146         struct berval* syncUUID,
1147         struct sync_cookie* syncCookie_req,
1148         struct berval* syncCSN )
1149 {
1150         Backend *be = op->o_bd;
1151         slap_callback   cb = { NULL };
1152         struct berval   *syncuuid_bv = NULL;
1153         struct berval   syncUUID_strrep = BER_BVNULL;
1154         struct berval   uuid_bv = BER_BVNULL;
1155
1156         SlapReply       rs_search = {REP_RESULT};
1157         SlapReply       rs_delete = {REP_RESULT};
1158         SlapReply       rs_add = {REP_RESULT};
1159         SlapReply       rs_modify = {REP_RESULT};
1160         Filter f = {0};
1161 #ifdef LDAP_COMP_MATCH
1162         AttributeAssertion ava = { NULL, BER_BVNULL, NULL };
1163 #else
1164         AttributeAssertion ava = { NULL, BER_BVNULL };
1165 #endif
1166         int rc = LDAP_SUCCESS;
1167         int ret = LDAP_SUCCESS;
1168
1169         struct berval pdn = BER_BVNULL;
1170         dninfo dni = {0};
1171         int     retry = 1;
1172
1173         switch( syncstate ) {
1174         case LDAP_SYNC_PRESENT:
1175                 Debug( LDAP_DEBUG_SYNC, "%s: %s\n",
1176                                         "syncrepl_entry",
1177                                         "LDAP_RES_SEARCH_ENTRY(LDAP_SYNC_PRESENT)", 0 );
1178                 break;
1179         case LDAP_SYNC_ADD:
1180                 Debug( LDAP_DEBUG_SYNC, "%s: %s\n",
1181                                         "syncrepl_entry",
1182                                         "LDAP_RES_SEARCH_ENTRY(LDAP_SYNC_ADD)", 0 );
1183                 break;
1184         case LDAP_SYNC_DELETE:
1185                 Debug( LDAP_DEBUG_SYNC, "%s: %s\n",
1186                                         "syncrepl_entry",
1187                                         "LDAP_RES_SEARCH_ENTRY(LDAP_SYNC_DELETE)", 0 );
1188                 break;
1189         case LDAP_SYNC_MODIFY:
1190                 Debug( LDAP_DEBUG_SYNC, "%s: %s\n",
1191                                         "syncrepl_entry",
1192                                         "LDAP_RES_SEARCH_ENTRY(LDAP_SYNC_MODIFY)", 0 );
1193                 break;
1194         default:
1195                 Debug( LDAP_DEBUG_ANY, "%s: %s\n",
1196                                         "syncrepl_entry",
1197                                         "LDAP_RES_SEARCH_ENTRY(UNKNOWN syncstate)", 0 );
1198         }
1199
1200         if (( syncstate == LDAP_SYNC_PRESENT || syncstate == LDAP_SYNC_ADD )) {
1201                 if ( !si->si_refreshPresent ) {
1202                         syncuuid_bv = ber_dupbv( NULL, syncUUID );
1203                         avl_insert( &si->si_presentlist, (caddr_t) syncuuid_bv,
1204                                 syncuuid_cmp, avl_dup_error );
1205                 }
1206         }
1207
1208         if ( syncstate == LDAP_SYNC_PRESENT ) {
1209                 return 0;
1210         } else if ( syncstate != LDAP_SYNC_DELETE ) {
1211                 if ( entry == NULL ) {
1212                         return 0;
1213                 }
1214         }
1215
1216         f.f_choice = LDAP_FILTER_EQUALITY;
1217         f.f_ava = &ava;
1218         ava.aa_desc = slap_schema.si_ad_entryUUID;
1219         (void)slap_uuidstr_from_normalized( &syncUUID_strrep, syncUUID, op->o_tmpmemctx );
1220         ava.aa_value = *syncUUID;
1221         op->ors_filter = &f;
1222
1223         op->ors_filterstr.bv_len = STRLENOF( "(entryUUID=)" ) + syncUUID->bv_len;
1224         op->ors_filterstr.bv_val = (char *) slap_sl_malloc(
1225                 op->ors_filterstr.bv_len + 1, op->o_tmpmemctx );
1226         AC_MEMCPY( op->ors_filterstr.bv_val, "(entryUUID=", STRLENOF( "(entryUUID=" ) );
1227         AC_MEMCPY( &op->ors_filterstr.bv_val[STRLENOF( "(entryUUID=" )],
1228                 syncUUID->bv_val, syncUUID->bv_len );
1229         op->ors_filterstr.bv_val[op->ors_filterstr.bv_len - 1] = ')';
1230         op->ors_filterstr.bv_val[op->ors_filterstr.bv_len] = '\0';
1231
1232         op->o_tag = LDAP_REQ_SEARCH;
1233         op->ors_scope = LDAP_SCOPE_SUBTREE;
1234
1235         /* get the entry for this UUID */
1236         op->o_req_dn = si->si_base;
1237         op->o_req_ndn = si->si_base;
1238
1239         op->o_time = slap_get_time();
1240         op->ors_tlimit = SLAP_NO_LIMIT;
1241         op->ors_slimit = 1;
1242
1243         op->ors_attrs = slap_anlist_all_attributes;
1244         op->ors_attrsonly = 0;
1245
1246         /* set callback function */
1247         op->o_callback = &cb;
1248         cb.sc_response = dn_callback;
1249         cb.sc_private = &dni;
1250         dni.new_entry = entry;
1251
1252         if ( limits_check( op, &rs_search ) == 0 ) {
1253                 rc = be->be_search( op, &rs_search );
1254                 Debug( LDAP_DEBUG_SYNC,
1255                                 "syncrepl_entry: %s (%d)\n",
1256                                 "be_search", rc, 0 );
1257         }
1258
1259         if ( !BER_BVISNULL( &op->ors_filterstr ) ) {
1260                 slap_sl_free( op->ors_filterstr.bv_val, op->o_tmpmemctx );
1261         }
1262
1263         cb.sc_response = null_callback;
1264         cb.sc_private = si;
1265
1266         if ( entry && !BER_BVISNULL( &entry->e_name ) ) {
1267                 Debug( LDAP_DEBUG_SYNC,
1268                                 "syncrepl_entry: %s\n",
1269                                 entry->e_name.bv_val, 0, 0 );
1270         } else {
1271                 Debug( LDAP_DEBUG_SYNC,
1272                                 "syncrepl_entry: %s\n",
1273                                 dni.dn.bv_val ? dni.dn.bv_val : "(null)", 0, 0 );
1274         }
1275
1276         if ( syncstate != LDAP_SYNC_DELETE ) {
1277                 Attribute       *a = attr_find( entry->e_attrs, slap_schema.si_ad_entryUUID );
1278
1279                 if ( a == NULL ) {
1280                         /* add if missing */
1281                         attr_merge_one( entry, slap_schema.si_ad_entryUUID,
1282                                 &syncUUID_strrep, syncUUID );
1283
1284                 } else if ( !bvmatch( &a->a_nvals[0], syncUUID ) ) {
1285                         /* replace only if necessary */
1286                         if ( a->a_nvals != a->a_vals ) {
1287                                 ber_memfree( a->a_nvals[0].bv_val );
1288                                 ber_dupbv( &a->a_nvals[0], syncUUID );
1289                         }
1290                         ber_memfree( a->a_vals[0].bv_val );
1291                         ber_dupbv( &a->a_vals[0], &syncUUID_strrep );
1292                 }
1293         }
1294
1295         switch ( syncstate ) {
1296         case LDAP_SYNC_ADD:
1297         case LDAP_SYNC_MODIFY:
1298 retry_add:;
1299                 if ( BER_BVISNULL( &dni.dn )) {
1300
1301                         op->o_req_dn = entry->e_name;
1302                         op->o_req_ndn = entry->e_nname;
1303                         op->o_tag = LDAP_REQ_ADD;
1304                         op->ora_e = entry;
1305
1306                         rc = be->be_add( op, &rs_add );
1307                         Debug( LDAP_DEBUG_SYNC,
1308                                         "syncrepl_entry: %s (%d)\n",
1309                                         "be_add", rc, 0 );
1310                         switch ( rs_add.sr_err ) {
1311                         case LDAP_SUCCESS:
1312                                 be_entry_release_w( op, entry );
1313                                 ret = 0;
1314                                 break;
1315
1316                         case LDAP_REFERRAL:
1317                         /* we assume that LDAP_NO_SUCH_OBJECT is returned
1318                          * only if the suffix entry is not present */
1319                         case LDAP_NO_SUCH_OBJECT:
1320                                 syncrepl_add_glue( op, entry );
1321                                 ret = 0;
1322                                 break;
1323
1324                         /* if an entry was added via syncrepl_add_glue(),
1325                          * it likely has no entryUUID, so the previous
1326                          * be_search() doesn't find it.  In this case,
1327                          * give syncrepl a chance to modify it. Also
1328                          * allow for entries that were recreated with the
1329                          * same DN but a different entryUUID.
1330                          */
1331                         case LDAP_ALREADY_EXISTS:
1332                                 if ( retry ) {
1333                                         Operation       op2 = *op;
1334                                         SlapReply       rs2 = { 0 };
1335                                         slap_callback   cb2 = { 0 };
1336
1337                                         op2.o_tag = LDAP_REQ_SEARCH;
1338                                         op2.o_req_dn = entry->e_name;
1339                                         op2.o_req_ndn = entry->e_nname;
1340                                         op2.ors_scope = LDAP_SCOPE_BASE;
1341                                         op2.ors_attrs = slap_anlist_all_attributes;
1342                                         op2.ors_attrsonly = 0;
1343                                         op2.ors_limit = NULL;
1344                                         op2.ors_slimit = 1;
1345                                         op2.ors_tlimit = SLAP_NO_LIMIT;
1346
1347                                         f.f_choice = LDAP_FILTER_PRESENT;
1348                                         f.f_desc = slap_schema.si_ad_objectClass;
1349                                         op2.ors_filter = &f;
1350                                         op2.ors_filterstr = generic_filterstr;
1351
1352                                         op2.o_callback = &cb2;
1353                                         cb2.sc_response = dn_callback;
1354                                         cb2.sc_private = &dni;
1355
1356                                         be->be_search( &op2, &rs2 );
1357
1358                                         retry = 0;
1359                                         goto retry_add;
1360                                 }
1361                                 /* FALLTHRU */
1362
1363                         default:
1364                                 Debug( LDAP_DEBUG_ANY,
1365                                         "syncrepl_entry : be_add failed (%d)\n",
1366                                         rs_add.sr_err, 0, 0 );
1367                                 ret = 1;
1368                                 break;
1369                         }
1370                         goto done;
1371                 }
1372                 /* FALLTHRU */
1373                 op->o_req_dn = dni.dn;
1374                 op->o_req_ndn = dni.ndn;
1375                 if ( dni.renamed ) {
1376                         struct berval noldp, newp, nnewp;
1377
1378                         op->o_tag = LDAP_REQ_MODRDN;
1379                         dnRdn( &entry->e_name, &op->orr_newrdn );
1380                         dnRdn( &entry->e_nname, &op->orr_nnewrdn );
1381
1382                         dnParent( &dni.ndn, &noldp );
1383                         dnParent( &entry->e_nname, &nnewp );
1384                         if ( !dn_match( &noldp, &newp )) {
1385                                 dnParent( &entry->e_name, &newp );
1386                                 op->orr_newSup = &newp;
1387                                 op->orr_nnewSup = &nnewp;
1388                         }
1389                         op->orr_deleteoldrdn = 0;
1390                         rc = be->be_modrdn( op, &rs_modify );
1391                         Debug( LDAP_DEBUG_SYNC,
1392                                         "syncrepl_entry: %s (%d)\n",
1393                                         "be_modrdn", rc, 0 );
1394                         if ( rs_modify.sr_err == LDAP_SUCCESS ) {
1395                                 op->o_req_dn = entry->e_name;
1396                                 op->o_req_ndn = entry->e_nname;
1397                         } else {
1398                                 ret = 1;
1399                                 goto done;
1400                         }
1401                 }
1402                 if ( dni.wasChanged ) {
1403                         Modifications *mod, *modhead = NULL;
1404                         Modifications *modtail = NULL;
1405                         int i;
1406
1407                         op->o_tag = LDAP_REQ_MODIFY;
1408
1409                         assert( *modlist );
1410
1411                         /* Delete all the old attrs */
1412                         for ( i = 0; i < dni.attrs; i++ ) {
1413                                 mod = ch_malloc( sizeof( Modifications ) );
1414                                 mod->sml_op = LDAP_MOD_DELETE;
1415                                 mod->sml_desc = dni.ads[i];
1416                                 mod->sml_type = mod->sml_desc->ad_cname;
1417                                 mod->sml_values = NULL;
1418                                 mod->sml_nvalues = NULL;
1419                                 if ( !modhead ) modhead = mod;
1420                                 if ( modtail ) {
1421                                         modtail->sml_next = mod;
1422                                 }
1423                                 modtail = mod;
1424                         }
1425
1426                         /* Append passed in list to ours */
1427                         if ( modtail ) {
1428                                 modtail->sml_next = *modlist;
1429                                 *modlist = modhead;
1430                         } else {
1431                                 mod = *modlist;
1432                         }
1433
1434                         /* Find end of this list */
1435                         for ( ; mod != NULL; mod = mod->sml_next ) {
1436                                 modtail = mod;
1437                         }
1438
1439                         mod = (Modifications *)ch_calloc(1, sizeof(Modifications));
1440                         mod->sml_op = LDAP_MOD_REPLACE;
1441                         mod->sml_desc = slap_schema.si_ad_entryUUID;
1442                         mod->sml_type = mod->sml_desc->ad_cname;
1443                         ber_dupbv( &uuid_bv, &syncUUID_strrep );
1444                         ber_bvarray_add( &mod->sml_values, &uuid_bv );
1445                         ber_dupbv( &uuid_bv, syncUUID );
1446                         ber_bvarray_add( &mod->sml_nvalues, &uuid_bv );
1447                         modtail->sml_next = mod;
1448
1449                         op->o_tag = LDAP_REQ_MODIFY;
1450                         op->orm_modlist = *modlist;
1451
1452                         rc = be->be_modify( op, &rs_modify );
1453                         Debug( LDAP_DEBUG_SYNC,
1454                                         "syncrepl_entry: %s (%d)\n",
1455                                         "be_modify", rc, 0 );
1456                         if ( rs_modify.sr_err != LDAP_SUCCESS ) {
1457                                 Debug( LDAP_DEBUG_ANY,
1458                                         "syncrepl_entry : be_modify failed (%d)\n",
1459                                         rs_modify.sr_err, 0, 0 );
1460                         }
1461                 }
1462                 ret = 1;
1463                 goto done;
1464         case LDAP_SYNC_DELETE :
1465                 if ( !BER_BVISNULL( &dni.dn )) {
1466                         op->o_req_dn = dni.dn;
1467                         op->o_req_ndn = dni.ndn;
1468                         op->o_tag = LDAP_REQ_DELETE;
1469                         rc = be->be_delete( op, &rs_delete );
1470                         Debug( LDAP_DEBUG_SYNC,
1471                                         "syncrepl_entry: %s (%d)\n",
1472                                         "be_delete", rc, 0 );
1473
1474                         while ( rs_delete.sr_err == LDAP_SUCCESS
1475                                 && op->o_delete_glue_parent ) {
1476                                 op->o_delete_glue_parent = 0;
1477                                 if ( !be_issuffix( op->o_bd, &op->o_req_ndn )) {
1478                                         slap_callback cb = { NULL };
1479                                         cb.sc_response = slap_null_cb;
1480                                         dnParent( &op->o_req_ndn, &pdn );
1481                                         op->o_req_dn = pdn;
1482                                         op->o_req_ndn = pdn;
1483                                         op->o_callback = &cb;
1484                                         op->o_bd->be_delete( op, &rs_delete );
1485                                 } else {
1486                                         break;
1487                                 }
1488                         }
1489                 }
1490                 ret = 0;
1491                 goto done;
1492
1493         default :
1494                 Debug( LDAP_DEBUG_ANY,
1495                         "syncrepl_entry : unknown syncstate\n", 0, 0, 0 );
1496                 ret = 1;
1497                 goto done;
1498         }
1499
1500 done :
1501         if ( !BER_BVISNULL( &syncUUID_strrep ) ) {
1502                 slap_sl_free( syncUUID_strrep.bv_val, op->o_tmpmemctx );
1503                 BER_BVZERO( &syncUUID_strrep );
1504         }
1505         if ( dni.ads ) {
1506                 op->o_tmpfree( dni.ads, op->o_tmpmemctx );
1507         }
1508         if ( !BER_BVISNULL( &dni.ndn ) ) {
1509                 op->o_tmpfree( dni.ndn.bv_val, op->o_tmpmemctx );
1510         }
1511         if ( !BER_BVISNULL( &dni.dn ) ) {
1512                 op->o_tmpfree( dni.dn.bv_val, op->o_tmpmemctx );
1513         }
1514         return ret;
1515 }
1516
1517 static struct berval gcbva[] = {
1518         BER_BVC("top"),
1519         BER_BVC("glue"),
1520         BER_BVNULL
1521 };
1522
1523 #define NP_DELETE_ONE   2
1524
1525 static void
1526 syncrepl_del_nonpresent(
1527         Operation *op,
1528         syncinfo_t *si,
1529         BerVarray uuids )
1530 {
1531         Backend* be = op->o_bd;
1532         slap_callback   cb = { NULL };
1533         SlapReply       rs_search = {REP_RESULT};
1534         SlapReply       rs_delete = {REP_RESULT};
1535         SlapReply       rs_modify = {REP_RESULT};
1536         struct nonpresent_entry *np_list, *np_prev;
1537         int rc;
1538         AttributeName   an[2];
1539
1540         struct berval pdn = BER_BVNULL;
1541
1542         op->o_req_dn = si->si_base;
1543         op->o_req_ndn = si->si_base;
1544
1545         cb.sc_response = nonpresent_callback;
1546         cb.sc_private = si;
1547
1548         op->o_callback = &cb;
1549         op->o_tag = LDAP_REQ_SEARCH;
1550         op->ors_scope = si->si_scope;
1551         op->ors_deref = LDAP_DEREF_NEVER;
1552         op->o_time = slap_get_time();
1553         op->ors_tlimit = SLAP_NO_LIMIT;
1554
1555
1556         if ( uuids ) {
1557                 Filter uf;
1558 #ifdef LDAP_COMP_MATCH
1559                 AttributeAssertion eq = { NULL, BER_BVNULL, NULL };
1560 #else
1561                 AttributeAssertion eq = { NULL, BER_BVNULL };
1562 #endif
1563                 int i;
1564
1565                 op->ors_attrsonly = 1;
1566                 op->ors_attrs = slap_anlist_no_attrs;
1567                 op->ors_limit = NULL;
1568                 op->ors_filter = &uf;
1569
1570                 uf.f_ava = &eq;
1571                 uf.f_av_desc = slap_schema.si_ad_entryUUID;
1572                 uf.f_next = NULL;
1573                 uf.f_choice = LDAP_FILTER_EQUALITY;
1574                 si->si_refreshDelete |= NP_DELETE_ONE;
1575
1576                 for (i=0; uuids[i].bv_val; i++) {
1577                         op->ors_slimit = 1;
1578                         uf.f_av_value = uuids[i];
1579                         rc = be->be_search( op, &rs_search );
1580                 }
1581                 si->si_refreshDelete ^= NP_DELETE_ONE;
1582         } else {
1583                 memset( &an[0], 0, 2 * sizeof( AttributeName ) );
1584                 an[0].an_name = slap_schema.si_ad_entryUUID->ad_cname;
1585                 an[0].an_desc = slap_schema.si_ad_entryUUID;
1586                 op->ors_attrs = an;
1587                 op->ors_slimit = SLAP_NO_LIMIT;
1588                 op->ors_attrsonly = 0;
1589                 op->ors_filter = str2filter_x( op, si->si_filterstr.bv_val );
1590                 op->ors_filterstr = si->si_filterstr;
1591                 op->o_nocaching = 1;
1592
1593                 if ( limits_check( op, &rs_search ) == 0 ) {
1594                         rc = be->be_search( op, &rs_search );
1595                 }
1596                 if ( op->ors_filter ) filter_free_x( op, op->ors_filter );
1597         }
1598
1599         op->o_nocaching = 0;
1600
1601         if ( !LDAP_LIST_EMPTY( &si->si_nonpresentlist ) ) {
1602
1603                 slap_queue_csn( op, &si->si_syncCookie.ctxcsn );
1604
1605                 np_list = LDAP_LIST_FIRST( &si->si_nonpresentlist );
1606                 while ( np_list != NULL ) {
1607                         LDAP_LIST_REMOVE( np_list, npe_link );
1608                         np_prev = np_list;
1609                         np_list = LDAP_LIST_NEXT( np_list, npe_link );
1610                         op->o_tag = LDAP_REQ_DELETE;
1611                         op->o_callback = &cb;
1612                         cb.sc_response = null_callback;
1613                         cb.sc_private = si;
1614                         op->o_req_dn = *np_prev->npe_name;
1615                         op->o_req_ndn = *np_prev->npe_nname;
1616                         rc = op->o_bd->be_delete( op, &rs_delete );
1617
1618                         if ( rs_delete.sr_err == LDAP_NOT_ALLOWED_ON_NONLEAF ) {
1619                                 Modifications mod1, mod2;
1620                                 mod1.sml_op = LDAP_MOD_REPLACE;
1621                                 mod1.sml_desc = slap_schema.si_ad_objectClass;
1622                                 mod1.sml_type = mod1.sml_desc->ad_cname;
1623                                 mod1.sml_values = &gcbva[0];
1624                                 mod1.sml_nvalues = NULL;
1625                                 mod1.sml_next = &mod2;
1626
1627                                 mod2.sml_op = LDAP_MOD_REPLACE;
1628                                 mod2.sml_desc = slap_schema.si_ad_structuralObjectClass;
1629                                 mod2.sml_type = mod2.sml_desc->ad_cname;
1630                                 mod2.sml_values = &gcbva[1];
1631                                 mod2.sml_nvalues = NULL;
1632                                 mod2.sml_next = NULL;
1633
1634                                 op->o_tag = LDAP_REQ_MODIFY;
1635                                 op->orm_modlist = &mod1;
1636
1637                                 rc = be->be_modify( op, &rs_modify );
1638                         }
1639
1640                         while ( rs_delete.sr_err == LDAP_SUCCESS &&
1641                                         op->o_delete_glue_parent ) {
1642                                 op->o_delete_glue_parent = 0;
1643                                 if ( !be_issuffix( op->o_bd, &op->o_req_ndn )) {
1644                                         slap_callback cb = { NULL };
1645                                         cb.sc_response = slap_null_cb;
1646                                         dnParent( &op->o_req_ndn, &pdn );
1647                                         op->o_req_dn = pdn;
1648                                         op->o_req_ndn = pdn;
1649                                         op->o_callback = &cb;
1650                                         /* give it a root privil ? */
1651                                         op->o_bd->be_delete( op, &rs_delete );
1652                                 } else {
1653                                         break;
1654                             }
1655                         }
1656
1657                         op->o_delete_glue_parent = 0;
1658
1659                         ber_bvfree( np_prev->npe_name );
1660                         ber_bvfree( np_prev->npe_nname );
1661                         ch_free( np_prev );
1662                 }
1663
1664                 slap_graduate_commit_csn( op );
1665         }
1666
1667         return;
1668 }
1669
1670 void
1671 syncrepl_add_glue(
1672         Operation* op,
1673         Entry *e )
1674 {
1675         Backend *be = op->o_bd;
1676         slap_callback cb = { NULL };
1677         Attribute       *a;
1678         int     rc;
1679         int suffrdns;
1680         int i;
1681         struct berval dn = {0, NULL};
1682         struct berval ndn = {0, NULL};
1683         Entry   *glue;
1684         SlapReply       rs_add = {REP_RESULT};
1685         char    *ptr, *comma;
1686
1687         op->o_tag = LDAP_REQ_ADD;
1688         op->o_callback = &cb;
1689         cb.sc_response = null_callback;
1690         cb.sc_private = NULL;
1691
1692         dn = e->e_name;
1693         ndn = e->e_nname;
1694
1695         /* count RDNs in suffix */
1696         if ( !BER_BVISEMPTY( &be->be_nsuffix[0] ) ) {
1697                 for ( i = 0, ptr = be->be_nsuffix[0].bv_val; ptr; ptr = strchr( ptr, ',' ) ) {
1698                         ptr++;
1699                         i++;
1700                 }
1701                 suffrdns = i;
1702         } else {
1703                 /* suffix is "" */
1704                 suffrdns = 0;
1705         }
1706
1707         /* Start with BE suffix */
1708         for ( i = 0, ptr = NULL; i < suffrdns; i++ ) {
1709                 comma = strrchr( dn.bv_val, ',' );
1710                 if ( ptr ) *ptr = ',';
1711                 if ( comma ) *comma = '\0';
1712                 ptr = comma;
1713         }
1714         if ( ptr ) {
1715                 *ptr++ = ',';
1716                 dn.bv_len -= ptr - dn.bv_val;
1717                 dn.bv_val = ptr;
1718         }
1719         /* the normalizedDNs are always the same length, no counting
1720          * required.
1721          */
1722         if ( ndn.bv_len > be->be_nsuffix[0].bv_len ) {
1723                 ndn.bv_val += ndn.bv_len - be->be_nsuffix[0].bv_len;
1724                 ndn.bv_len = be->be_nsuffix[0].bv_len;
1725         }
1726
1727         while ( ndn.bv_val > e->e_nname.bv_val ) {
1728                 glue = (Entry *) ch_calloc( 1, sizeof(Entry) );
1729                 ber_dupbv( &glue->e_name, &dn );
1730                 ber_dupbv( &glue->e_nname, &ndn );
1731
1732                 a = ch_calloc( 1, sizeof( Attribute ));
1733                 a->a_desc = slap_schema.si_ad_objectClass;
1734
1735                 a->a_vals = ch_calloc( 3, sizeof( struct berval ));
1736                 ber_dupbv( &a->a_vals[0], &gcbva[0] );
1737                 ber_dupbv( &a->a_vals[1], &gcbva[1] );
1738                 ber_dupbv( &a->a_vals[2], &gcbva[2] );
1739
1740                 a->a_nvals = a->a_vals;
1741
1742                 a->a_next = glue->e_attrs;
1743                 glue->e_attrs = a;
1744
1745                 a = ch_calloc( 1, sizeof( Attribute ));
1746                 a->a_desc = slap_schema.si_ad_structuralObjectClass;
1747
1748                 a->a_vals = ch_calloc( 2, sizeof( struct berval ));
1749                 ber_dupbv( &a->a_vals[0], &gcbva[1] );
1750                 ber_dupbv( &a->a_vals[1], &gcbva[2] );
1751
1752                 a->a_nvals = a->a_vals;
1753
1754                 a->a_next = glue->e_attrs;
1755                 glue->e_attrs = a;
1756
1757                 op->o_req_dn = glue->e_name;
1758                 op->o_req_ndn = glue->e_nname;
1759                 op->ora_e = glue;
1760                 rc = be->be_add ( op, &rs_add );
1761                 if ( rs_add.sr_err == LDAP_SUCCESS ) {
1762                         be_entry_release_w( op, glue );
1763                 } else {
1764                 /* incl. ALREADY EXIST */
1765                         entry_free( glue );
1766                 }
1767
1768                 /* Move to next child */
1769                 for (ptr = dn.bv_val-2; ptr > e->e_name.bv_val && *ptr != ','; ptr--) {
1770                         /* empty */
1771                 }
1772                 if ( ptr == e->e_name.bv_val ) break;
1773                 dn.bv_val = ++ptr;
1774                 dn.bv_len = e->e_name.bv_len - (ptr-e->e_name.bv_val);
1775                 for( ptr = ndn.bv_val-2;
1776                         ptr > e->e_nname.bv_val && *ptr != ',';
1777                         ptr--)
1778                 {
1779                         /* empty */
1780                 }
1781                 ndn.bv_val = ++ptr;
1782                 ndn.bv_len = e->e_nname.bv_len - (ptr-e->e_nname.bv_val);
1783         }
1784
1785         op->o_req_dn = e->e_name;
1786         op->o_req_ndn = e->e_nname;
1787         op->ora_e = e;
1788         rc = be->be_add ( op, &rs_add );
1789         if ( rs_add.sr_err == LDAP_SUCCESS ) {
1790                 be_entry_release_w( op, e );
1791         } else {
1792                 entry_free( e );
1793         }
1794
1795         return;
1796 }
1797
1798 void
1799 syncrepl_updateCookie(
1800         syncinfo_t *si,
1801         Operation *op,
1802         struct berval *pdn,
1803         struct sync_cookie *syncCookie )
1804 {
1805         Backend *be = op->o_bd;
1806         Modifications mod = {0};
1807         struct berval vals[2];
1808
1809         int rc;
1810
1811         slap_callback cb = { NULL };
1812         SlapReply       rs_modify = {REP_RESULT};
1813
1814         slap_sync_cookie_free( &si->si_syncCookie, 0 );
1815         slap_dup_sync_cookie( &si->si_syncCookie, syncCookie );
1816
1817         mod.sml_op = LDAP_MOD_REPLACE;
1818         mod.sml_desc = slap_schema.si_ad_contextCSN;
1819         mod.sml_type = mod.sml_desc->ad_cname;
1820         mod.sml_values = vals;
1821         vals[0] = si->si_syncCookie.ctxcsn;
1822         vals[1].bv_val = NULL;
1823         vals[1].bv_len = 0;
1824
1825         slap_queue_csn( op, &si->si_syncCookie.ctxcsn );
1826
1827         op->o_tag = LDAP_REQ_MODIFY;
1828
1829         assert( si->si_rid < 1000 );
1830
1831         cb.sc_response = null_callback;
1832         cb.sc_private = si;
1833
1834         op->o_callback = &cb;
1835         op->o_req_dn = op->o_bd->be_suffix[0];
1836         op->o_req_ndn = op->o_bd->be_nsuffix[0];
1837
1838         /* update contextCSN */
1839         op->o_msgid = SLAP_SYNC_UPDATE_MSGID;
1840         op->orm_modlist = &mod;
1841         rc = be->be_modify( op, &rs_modify );
1842         op->o_msgid = 0;
1843
1844         if ( rs_modify.sr_err != LDAP_SUCCESS ) {
1845                 Debug( LDAP_DEBUG_ANY,
1846                         "be_modify failed (%d)\n", rs_modify.sr_err, 0, 0 );
1847         }
1848
1849         slap_graduate_commit_csn( op );
1850
1851         return;
1852 }
1853
1854 static int
1855 dn_callback(
1856         Operation*      op,
1857         SlapReply*      rs )
1858 {
1859         dninfo *dni = op->o_callback->sc_private;
1860
1861         if ( rs->sr_type == REP_SEARCH ) {
1862                 if ( !BER_BVISNULL( &dni->dn ) ) {
1863                         Debug( LDAP_DEBUG_ANY,
1864                                 "dn_callback : consistency error - "
1865                                 "entryUUID is not unique\n", 0, 0, 0 );
1866                 } else {
1867                         ber_dupbv_x( &dni->dn, &rs->sr_entry->e_name, op->o_tmpmemctx );
1868                         ber_dupbv_x( &dni->ndn, &rs->sr_entry->e_nname, op->o_tmpmemctx );
1869                         /* If there is a new entry, see if it differs from the old.
1870                          * We compare the non-normalized values so that cosmetic changes
1871                          * in the provider are always propagated.
1872                          */
1873                         if ( dni->new_entry ) {
1874                                 Attribute *old, *new;
1875                                 int i;
1876
1877                                 /* Did the DN change? Note that we don't explicitly try to
1878                                  * discover if the deleteOldRdn argument applies here. It
1879                                  * would save an unnecessary Modify if we detected it, but
1880                                  * that's a fair amount of trouble to compare the two attr
1881                                  * lists in detail.
1882                                  */
1883                                 if ( !dn_match( &rs->sr_entry->e_name,
1884                                                 &dni->new_entry->e_name ) )
1885                                 {
1886                                         dni->renamed = 1;
1887                                 }
1888
1889                                 for ( i = 0, old = rs->sr_entry->e_attrs;
1890                                                 old;
1891                                                 i++, old = old->a_next )
1892                                         ;
1893
1894                                 dni->attrs = i;
1895
1896                                 /* We assume that attributes are saved in the same order
1897                                  * in the remote and local databases. So if we walk through
1898                                  * the attributeDescriptions one by one they should match in
1899                                  * lock step. If not, we signal a change. Otherwise we test
1900                                  * all the values...
1901                                  */
1902                                 for ( old = rs->sr_entry->e_attrs, new = dni->new_entry->e_attrs;
1903                                                 old && new;
1904                                                 old = old->a_next, new = new->a_next )
1905                                 {
1906                                         if ( old->a_desc != new->a_desc ) {
1907                                                 dni->wasChanged = 1;
1908                                                 break;
1909                                         }
1910                                         for ( i = 0; ; i++ ) {
1911                                                 int nold, nnew;
1912                                                 nold = BER_BVISNULL( &old->a_vals[i] );
1913                                                 nnew = BER_BVISNULL( &new->a_vals[i] );
1914                                                 /* If both are empty, stop looking */
1915                                                 if ( nold && nnew ) {
1916                                                         break;
1917                                                 }
1918                                                 /* If they are different, stop looking */
1919                                                 if ( nold != nnew ) {
1920                                                         dni->wasChanged = 1;
1921                                                         break;
1922                                                 }
1923                                                 if ( ber_bvcmp( &old->a_vals[i], &new->a_vals[i] )) {
1924                                                         dni->wasChanged = 1;
1925                                                         break;
1926                                                 }
1927                                         }
1928                                         if ( dni->wasChanged ) break;
1929                                 }
1930                                 if ( dni->wasChanged ) {
1931                                         dni->ads = op->o_tmpalloc( dni->attrs *
1932                                                 sizeof(AttributeDescription *), op->o_tmpmemctx );
1933                                         i = 0;
1934                                         for ( old = rs->sr_entry->e_attrs; old; old = old->a_next ) {
1935                                                 dni->ads[i] = old->a_desc;
1936                                                 i++;
1937                                         }
1938                                 }
1939                         }
1940                 }
1941         } else if ( rs->sr_type == REP_RESULT ) {
1942                 if ( rs->sr_err == LDAP_SIZELIMIT_EXCEEDED ) {
1943                         Debug( LDAP_DEBUG_ANY,
1944                                 "dn_callback : consistency error - "
1945                                 "entryUUID is not unique\n", 0, 0, 0 );
1946                 }
1947         }
1948
1949         return LDAP_SUCCESS;
1950 }
1951
1952 static int
1953 nonpresent_callback(
1954         Operation*      op,
1955         SlapReply*      rs )
1956 {
1957         syncinfo_t *si = op->o_callback->sc_private;
1958         Attribute *a;
1959         int count = 0;
1960         struct berval* present_uuid = NULL;
1961         struct nonpresent_entry *np_entry;
1962
1963         if ( rs->sr_type == REP_RESULT ) {
1964                 count = avl_free( si->si_presentlist, avl_ber_bvfree );
1965                 si->si_presentlist = NULL;
1966
1967         } else if ( rs->sr_type == REP_SEARCH ) {
1968                 if ( !(si->si_refreshDelete & NP_DELETE_ONE )) {
1969                         a = attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_entryUUID );
1970
1971                         if ( a == NULL ) return 0;
1972
1973                         present_uuid = avl_find( si->si_presentlist, &a->a_nvals[0],
1974                                 syncuuid_cmp );
1975                 }
1976
1977                 if ( present_uuid == NULL ) {
1978                         np_entry = (struct nonpresent_entry *)
1979                                 ch_calloc( 1, sizeof( struct nonpresent_entry ));
1980                         np_entry->npe_name = ber_dupbv( NULL, &rs->sr_entry->e_name );
1981                         np_entry->npe_nname = ber_dupbv( NULL, &rs->sr_entry->e_nname );
1982                         LDAP_LIST_INSERT_HEAD( &si->si_nonpresentlist, np_entry, npe_link );
1983
1984                 } else {
1985                         avl_delete( &si->si_presentlist,
1986                                         &a->a_nvals[0], syncuuid_cmp );
1987                         ch_free( present_uuid->bv_val );
1988                         ch_free( present_uuid );
1989                 }
1990         }
1991         return LDAP_SUCCESS;
1992 }
1993
1994 static int
1995 null_callback(
1996         Operation*      op,
1997         SlapReply*      rs )
1998 {
1999         if ( rs->sr_err != LDAP_SUCCESS &&
2000                 rs->sr_err != LDAP_REFERRAL &&
2001                 rs->sr_err != LDAP_ALREADY_EXISTS &&
2002                 rs->sr_err != LDAP_NO_SUCH_OBJECT &&
2003                 rs->sr_err != LDAP_NOT_ALLOWED_ON_NONLEAF )
2004         {
2005                 Debug( LDAP_DEBUG_ANY,
2006                         "null_callback : error code 0x%x\n",
2007                         rs->sr_err, 0, 0 );
2008         }
2009         return LDAP_SUCCESS;
2010 }
2011
2012 struct berval *
2013 slap_uuidstr_from_normalized(
2014         struct berval* uuidstr,
2015         struct berval* normalized,
2016         void *ctx )
2017 {
2018         struct berval *new;
2019         unsigned char nibble;
2020         int i, d = 0;
2021
2022         if ( normalized == NULL ) return NULL;
2023         if ( normalized->bv_len != 16 ) return NULL;
2024
2025         if ( uuidstr ) {
2026                 new = uuidstr;
2027         } else {
2028                 new = (struct berval *)slap_sl_malloc( sizeof(struct berval), ctx );
2029                 if ( new == NULL ) {
2030                         return NULL;
2031                 }
2032         }
2033
2034         new->bv_len = 36;
2035
2036         if ( ( new->bv_val = slap_sl_malloc( new->bv_len + 1, ctx ) ) == NULL ) {
2037                 if ( new != uuidstr ) {
2038                         slap_sl_free( new, ctx );
2039                 }
2040                 return NULL;
2041         }
2042
2043         for ( i = 0; i < 16; i++ ) {
2044                 if ( i == 4 || i == 6 || i == 8 || i == 10 ) {
2045                         new->bv_val[(i<<1)+d] = '-';
2046                         d += 1;
2047                 }
2048
2049                 nibble = (normalized->bv_val[i] >> 4) & 0xF;
2050                 if ( nibble < 10 ) {
2051                         new->bv_val[(i<<1)+d] = nibble + '0';
2052                 } else {
2053                         new->bv_val[(i<<1)+d] = nibble - 10 + 'a';
2054                 }
2055
2056                 nibble = (normalized->bv_val[i]) & 0xF;
2057                 if ( nibble < 10 ) {
2058                         new->bv_val[(i<<1)+d+1] = nibble + '0';
2059                 } else {
2060                         new->bv_val[(i<<1)+d+1] = nibble - 10 + 'a';
2061                 }
2062         }
2063
2064         new->bv_val[new->bv_len] = '\0';
2065         return new;
2066 }
2067
2068 static int
2069 syncuuid_cmp( const void* v_uuid1, const void* v_uuid2 )
2070 {
2071         const struct berval *uuid1 = v_uuid1;
2072         const struct berval *uuid2 = v_uuid2;
2073         int rc = uuid1->bv_len - uuid2->bv_len;
2074         if ( rc ) return rc;
2075         return ( memcmp( uuid1->bv_val, uuid2->bv_val, uuid1->bv_len ) );
2076 }
2077
2078 static void
2079 avl_ber_bvfree( void *v_bv )
2080 {
2081         struct berval   *bv = (struct berval *)v_bv;
2082
2083         if( v_bv == NULL ) return;
2084         if ( !BER_BVISNULL( bv ) ) {
2085                 ch_free( bv->bv_val );
2086         }
2087         ch_free( (char *) bv );
2088 }
2089
2090 void
2091 syncinfo_free( syncinfo_t *sie )
2092 {
2093         ldap_pvt_thread_mutex_destroy( &sie->si_mutex );
2094         if ( !BER_BVISNULL( &sie->si_provideruri ) ) {
2095                 ch_free( sie->si_provideruri.bv_val );
2096         }
2097
2098         bindconf_free( &sie->si_bindconf );
2099
2100         if ( sie->si_filterstr.bv_val ) {
2101                 ch_free( sie->si_filterstr.bv_val );
2102         }
2103         if ( sie->si_base.bv_val ) {
2104                 ch_free( sie->si_base.bv_val );
2105         }
2106         if ( sie->si_attrs ) {
2107                 int i = 0;
2108                 while ( sie->si_attrs[i] != NULL ) {
2109                         ch_free( sie->si_attrs[i] );
2110                         i++;
2111                 }
2112                 ch_free( sie->si_attrs );
2113         }
2114         if ( sie->si_exattrs ) {
2115                 int i = 0;
2116                 while ( sie->si_exattrs[i] != NULL ) {
2117                         ch_free( sie->si_exattrs[i] );
2118                         i++;
2119                 }
2120                 ch_free( sie->si_exattrs );
2121         }
2122         if ( sie->si_anlist ) {
2123                 int i = 0;
2124                 while ( sie->si_anlist[i].an_name.bv_val != NULL ) {
2125                         ch_free( sie->si_anlist[i].an_name.bv_val );
2126                         i++;
2127                 }
2128                 ch_free( sie->si_anlist );
2129         }
2130         if ( sie->si_exanlist ) {
2131                 int i = 0;
2132                 while ( sie->si_exanlist[i].an_name.bv_val != NULL ) {
2133                         ch_free( sie->si_exanlist[i].an_name.bv_val );
2134                         i++;
2135                 }
2136                 ch_free( sie->si_exanlist );
2137         }
2138         if ( sie->si_retryinterval ) {
2139                 ch_free( sie->si_retryinterval );
2140         }
2141         if ( sie->si_retrynum ) {
2142                 ch_free( sie->si_retrynum );
2143         }
2144         if ( sie->si_retrynum_init ) {
2145                 ch_free( sie->si_retrynum_init );
2146         }
2147         slap_sync_cookie_free( &sie->si_syncCookie, 0 );
2148         if ( sie->si_presentlist ) {
2149             avl_free( sie->si_presentlist, avl_ber_bvfree );
2150         }
2151         if ( sie->si_ld ) {
2152                 ldap_ld_free( sie->si_ld, 1, NULL, NULL );
2153         }
2154         while ( !LDAP_LIST_EMPTY( &sie->si_nonpresentlist )) {
2155                 struct nonpresent_entry* npe;
2156                 npe = LDAP_LIST_FIRST( &sie->si_nonpresentlist );
2157                 LDAP_LIST_REMOVE( npe, npe_link );
2158                 if ( npe->npe_name ) {
2159                         if ( npe->npe_name->bv_val ) {
2160                                 ch_free( npe->npe_name->bv_val );
2161                         }
2162                         ch_free( npe->npe_name );
2163                 }
2164                 if ( npe->npe_nname ) {
2165                         if ( npe->npe_nname->bv_val ) {
2166                                 ch_free( npe->npe_nname->bv_val );
2167                         }
2168                         ch_free( npe->npe_nname );
2169                 }
2170                 ch_free( npe );
2171         }
2172         ch_free( sie );
2173 }