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 2003-2010 The OpenLDAP Foundation.
   6  * Portions Copyright 2003 by IBM Corporation.
   7  * Portions Copyright 2003-2008 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 "config.h"
  31
  32 #include "ldap_rq.h"
  33
  34 struct nonpresent_entry {
  35         struct berval *npe_name;
  36         struct berval *npe_nname;
  37         LDAP_LIST_ENTRY(nonpresent_entry) npe_link;
  38 };
  39
  40 typedef struct cookie_state {
  41         ldap_pvt_thread_mutex_t cs_mutex;
  42         int     cs_num;
  43         int cs_age;
  44         int cs_ref;
  45         struct berval *cs_vals;
  46         int *cs_sids;
  47
  48         /* pending changes, not yet committed */
  49         ldap_pvt_thread_mutex_t cs_pmutex;
  50         int     cs_pnum;
  51         struct berval *cs_pvals;
  52         int *cs_psids;
  53 } cookie_state;
  54
  55 #define SYNCDATA_DEFAULT        0       /* entries are plain LDAP entries */
  56 #define SYNCDATA_ACCESSLOG      1       /* entries are accesslog format */
  57 #define SYNCDATA_CHANGELOG      2       /* entries are changelog format */
  58
  59 #define SYNCLOG_LOGGING         0       /* doing a log-based update */
  60 #define SYNCLOG_FALLBACK        1       /* doing a full refresh */
  61
  62 #define RETRYNUM_FOREVER        (-1)    /* retry forever */
  63 #define RETRYNUM_TAIL           (-2)    /* end of retrynum array */
  64 #define RETRYNUM_VALID(n)       ((n) >= RETRYNUM_FOREVER)       /* valid retrynum */
  65 #define RETRYNUM_FINITE(n)      ((n) > RETRYNUM_FOREVER)        /* not forever */
  66
  67 typedef struct syncinfo_s {
  68         struct syncinfo_s       *si_next;
  69         BackendDB               *si_be;
  70         BackendDB               *si_wbe;
  71         struct re_s             *si_re;
  72         int                     si_rid;
  73         char                    si_ridtxt[ STRLENOF("rid=999") + 1 ];
  74         slap_bindconf           si_bindconf;
  75         struct berval           si_base;
  76         struct berval           si_logbase;
  77         struct berval           si_filterstr;
  78         Filter                  *si_filter;
  79         struct berval           si_logfilterstr;
  80         struct berval           si_contextdn;
  81         int                     si_scope;
  82         int                     si_attrsonly;
  83         char                    *si_anfile;
  84         AttributeName           *si_anlist;
  85         AttributeName           *si_exanlist;
  86         char                    **si_attrs;
  87         char                    **si_exattrs;
  88         int                     si_allattrs;
  89         int                     si_allopattrs;
  90         int                     si_schemachecking;
  91         int                     si_type;        /* the active type */
  92         int                     si_ctype;       /* the configured type */
  93         time_t                  si_interval;
  94         time_t                  *si_retryinterval;
  95         int                     *si_retrynum_init;
  96         int                     *si_retrynum;
  97         struct sync_cookie      si_syncCookie;
  98         cookie_state            *si_cookieState;
  99         int                     si_cookieAge;
 100         int                     si_manageDSAit;
 101         int                     si_slimit;
 102         int                     si_tlimit;
 103         int                     si_refreshDelete;
 104         int                     si_refreshPresent;
 105         int                     si_refreshDone;
 106         int                     si_syncdata;
 107         int                     si_logstate;
 108         int                     si_got;
 109         ber_int_t       si_msgid;
 110         Avlnode                 *si_presentlist;
 111         LDAP                    *si_ld;
 112         Connection              *si_conn;
 113         LDAP_LIST_HEAD(np, nonpresent_entry)    si_nonpresentlist;
 114         ldap_pvt_thread_mutex_t si_mutex;
 115 } syncinfo_t;
 116
 117 static int syncuuid_cmp( const void *, const void * );
 118 static int avl_presentlist_insert( syncinfo_t* si, struct berval *syncUUID );
 119 static void syncrepl_del_nonpresent( Operation *, syncinfo_t *, BerVarray, struct sync_cookie *, int );
 120 static int syncrepl_message_to_op(
 121                                         syncinfo_t *, Operation *, LDAPMessage * );
 122 static int syncrepl_message_to_entry(
 123                                         syncinfo_t *, Operation *, LDAPMessage *,
 124                                         Modifications **, Entry **, int );
 125 static int syncrepl_entry(
 126                                         syncinfo_t *, Operation*, Entry*,
 127                                         Modifications**,int, struct berval*,
 128                                         struct berval *cookieCSN );
 129 static int syncrepl_updateCookie(
 130                                         syncinfo_t *, Operation *,
 131                                         struct sync_cookie * );
 132 static struct berval * slap_uuidstr_from_normalized(
 133                                         struct berval *, struct berval *, void * );
 134 static int syncrepl_add_glue_ancestors(
 135         Operation* op, Entry *e );
 136
 137 /* callback functions */
 138 static int dn_callback( Operation *, SlapReply * );
 139 static int nonpresent_callback( Operation *, SlapReply * );
 140 static int null_callback( Operation *, SlapReply * );
 141
 142 static AttributeDescription *sync_descs[4];
 143
 144 static const char *
 145 syncrepl_state2str( int state )
 146 {
 147         switch ( state ) {
 148         case LDAP_SYNC_PRESENT:
 149                 return "PRESENT";
 150
 151         case LDAP_SYNC_ADD:
 152                 return "ADD";
 153
 154         case LDAP_SYNC_MODIFY:
 155                 return "MODIFY";
 156
 157         case LDAP_SYNC_DELETE:
 158                 return "DELETE";
 159         }
 160
 161         return "UNKNOWN";
 162 }
 163
 164 static void
 165 init_syncrepl(syncinfo_t *si)
 166 {
 167         int i, j, k, l, n;
 168         char **attrs, **exattrs;
 169
 170         if ( !sync_descs[0] ) {
 171                 sync_descs[0] = slap_schema.si_ad_objectClass;
 172                 sync_descs[1] = slap_schema.si_ad_structuralObjectClass;
 173                 sync_descs[2] = slap_schema.si_ad_entryCSN;
 174                 sync_descs[3] = NULL;
 175         }
 176
 177         if ( si->si_allattrs && si->si_allopattrs )
 178                 attrs = NULL;
 179         else
 180                 attrs = anlist2attrs( si->si_anlist );
 181
 182         if ( attrs ) {
 183                 if ( si->si_allattrs ) {
 184                         i = 0;
 185                         while ( attrs[i] ) {
 186                                 if ( !is_at_operational( at_find( attrs[i] ) ) ) {
 187                                         for ( j = i; attrs[j] != NULL; j++ ) {
 188                                                 if ( j == i )
 189                                                         ch_free( attrs[i] );
 190                                                 attrs[j] = attrs[j+1];
 191                                         }
 192                                 } else {
 193                                         i++;
 194                                 }
 195                         }
 196                         attrs = ( char ** ) ch_realloc( attrs, (i + 2)*sizeof( char * ) );
 197                         attrs[i] = ch_strdup("*");
 198                         attrs[i + 1] = NULL;
 199
 200                 } else if ( si->si_allopattrs ) {
 201                         i = 0;
 202                         while ( attrs[i] ) {
 203                                 if ( is_at_operational( at_find( attrs[i] ) ) ) {
 204                                         for ( j = i; attrs[j] != NULL; j++ ) {
 205                                                 if ( j == i )
 206                                                         ch_free( attrs[i] );
 207                                                 attrs[j] = attrs[j+1];
 208                                         }
 209                                 } else {
 210                                         i++;
 211                                 }
 212                         }
 213                         attrs = ( char ** ) ch_realloc( attrs, (i + 2)*sizeof( char * ) );
 214                         attrs[i] = ch_strdup("+");
 215                         attrs[i + 1] = NULL;
 216                 }
 217
 218                 for ( i = 0; sync_descs[i] != NULL; i++ ) {
 219                         j = 0;
 220                         while ( attrs[j] ) {
 221                                 if ( !strcmp( attrs[j], sync_descs[i]->ad_cname.bv_val ) ) {
 222                                         for ( k = j; attrs[k] != NULL; k++ ) {
 223                                                 if ( k == j )
 224                                                         ch_free( attrs[k] );
 225                                                 attrs[k] = attrs[k+1];
 226                                         }
 227                                 } else {
 228                                         j++;
 229                                 }
 230                         }
 231                 }
 232
 233                 for ( n = 0; attrs[ n ] != NULL; n++ ) /* empty */;
 234
 235                 if ( si->si_allopattrs ) {
 236                         attrs = ( char ** ) ch_realloc( attrs, (n + 2)*sizeof( char * ) );
 237                 } else {
 238                         attrs = ( char ** ) ch_realloc( attrs, (n + 4)*sizeof( char * ) );
 239                 }
 240
 241                 /* Add Attributes */
 242                 if ( si->si_allopattrs ) {
 243                         attrs[n++] = ch_strdup( sync_descs[0]->ad_cname.bv_val );
 244                 } else {
 245                         for ( i = 0; sync_descs[ i ] != NULL; i++ ) {
 246                                 attrs[ n++ ] = ch_strdup ( sync_descs[i]->ad_cname.bv_val );
 247                         }
 248                 }
 249                 attrs[ n ] = NULL;
 250
 251         } else {
 252
 253                 i = 0;
 254                 if ( si->si_allattrs == si->si_allopattrs ) {
 255                         attrs = (char**) ch_malloc( 3 * sizeof(char*) );
 256                         attrs[i++] = ch_strdup( "*" );
 257                         attrs[i++] = ch_strdup( "+" );
 258                 } else if ( si->si_allattrs && !si->si_allopattrs ) {
 259                         for ( n = 0; sync_descs[ n ] != NULL; n++ ) ;
 260                         attrs = (char**) ch_malloc( (n+1)* sizeof(char*) );
 261                         attrs[i++] = ch_strdup( "*" );
 262                         for ( j = 1; sync_descs[ j ] != NULL; j++ ) {
 263                                 attrs[i++] = ch_strdup ( sync_descs[j]->ad_cname.bv_val );
 264                         }
 265                 } else if ( !si->si_allattrs && si->si_allopattrs ) {
 266                         attrs = (char**) ch_malloc( 3 * sizeof(char*) );
 267                         attrs[i++] = ch_strdup( "+" );
 268                         attrs[i++] = ch_strdup( sync_descs[0]->ad_cname.bv_val );
 269                 }
 270                 attrs[i] = NULL;
 271         }
 272
 273         si->si_attrs = attrs;
 274
 275         exattrs = anlist2attrs( si->si_exanlist );
 276
 277         if ( exattrs ) {
 278                 for ( n = 0; exattrs[n] != NULL; n++ ) ;
 279
 280                 for ( i = 0; sync_descs[i] != NULL; i++ ) {
 281                         j = 0;
 282                         while ( exattrs[j] != NULL ) {
 283                                 if ( !strcmp( exattrs[j], sync_descs[i]->ad_cname.bv_val ) ) {
 284                                         ch_free( exattrs[j] );
 285                                         for ( k = j; exattrs[k] != NULL; k++ ) {
 286                                                 exattrs[k] = exattrs[k+1];
 287                                         }
 288                                 } else {
 289                                         j++;
 290                                 }
 291                         }
 292                 }
 293
 294                 for ( i = 0; exattrs[i] != NULL; i++ ) {
 295                         for ( j = 0; si->si_anlist[j].an_name.bv_val; j++ ) {
 296                                 ObjectClass     *oc;
 297                                 if ( ( oc = si->si_anlist[j].an_oc ) ) {
 298                                         k = 0;
 299                                         while ( oc->soc_required[k] ) {
 300                                                 if ( !strcmp( exattrs[i],
 301                                                          oc->soc_required[k]->sat_cname.bv_val ) ) {
 302                                                         ch_free( exattrs[i] );
 303                                                         for ( l = i; exattrs[l]; l++ ) {
 304                                                                 exattrs[l] = exattrs[l+1];
 305                                                         }
 306                                                 } else {
 307                                                         k++;
 308                                                 }
 309                                         }
 310                                 }
 311                         }
 312                 }
 313
 314                 for ( i = 0; exattrs[i] != NULL; i++ ) ;
 315
 316                 if ( i != n )
 317                         exattrs = (char **) ch_realloc( exattrs, (i + 1)*sizeof(char *) );
 318         }
 319
 320         si->si_exattrs = exattrs;
 321 }
 322
 323 typedef struct logschema {
 324         struct berval ls_dn;
 325         struct berval ls_req;
 326         struct berval ls_mod;
 327         struct berval ls_newRdn;
 328         struct berval ls_delRdn;
 329         struct berval ls_newSup;
 330 } logschema;
 331
 332 static logschema changelog_sc = {
 333         BER_BVC("targetDN"),
 334         BER_BVC("changeType"),
 335         BER_BVC("changes"),
 336         BER_BVC("newRDN"),
 337         BER_BVC("deleteOldRDN"),
 338         BER_BVC("newSuperior")
 339 };
 340
 341 static logschema accesslog_sc = {
 342         BER_BVC("reqDN"),
 343         BER_BVC("reqType"),
 344         BER_BVC("reqMod"),
 345         BER_BVC("reqNewRDN"),
 346         BER_BVC("reqDeleteOldRDN"),
 347         BER_BVC("reqNewSuperior")
 348 };
 349
 350 static int
 351 ldap_sync_search(
 352         syncinfo_t *si,
 353         void *ctx )
 354 {
 355         BerElementBuffer berbuf;
 356         BerElement *ber = (BerElement *)&berbuf;
 357         LDAPControl c[3], *ctrls[4];
 358         int rc;
 359         int rhint;
 360         char *base;
 361         char **attrs, *lattrs[8];
 362         char *filter;
 363         int attrsonly;
 364         int scope;
 365
 366         /* setup LDAP SYNC control */
 367         ber_init2( ber, NULL, LBER_USE_DER );
 368         ber_set_option( ber, LBER_OPT_BER_MEMCTX, &ctx );
 369
 370         /* If we're using a log but we have no state, then fallback to
 371          * normal mode for a full refresh.
 372          */
 373         if ( si->si_syncdata && !si->si_syncCookie.numcsns ) {
 374                 si->si_logstate = SYNCLOG_FALLBACK;
 375         }
 376
 377         /* Use the log parameters if we're in log mode */
 378         if ( si->si_syncdata && si->si_logstate == SYNCLOG_LOGGING ) {
 379                 logschema *ls;
 380                 if ( si->si_syncdata == SYNCDATA_ACCESSLOG )
 381                         ls = &accesslog_sc;
 382                 else
 383                         ls = &changelog_sc;
 384                 lattrs[0] = ls->ls_dn.bv_val;
 385                 lattrs[1] = ls->ls_req.bv_val;
 386                 lattrs[2] = ls->ls_mod.bv_val;
 387                 lattrs[3] = ls->ls_newRdn.bv_val;
 388                 lattrs[4] = ls->ls_delRdn.bv_val;
 389                 lattrs[5] = ls->ls_newSup.bv_val;
 390                 lattrs[6] = slap_schema.si_ad_entryCSN->ad_cname.bv_val;
 391                 lattrs[7] = NULL;
 392
 393                 rhint = 0;
 394                 base = si->si_logbase.bv_val;
 395                 filter = si->si_logfilterstr.bv_val;
 396                 attrs = lattrs;
 397                 attrsonly = 0;
 398                 scope = LDAP_SCOPE_SUBTREE;
 399         } else {
 400                 rhint = 1;
 401                 base = si->si_base.bv_val;
 402                 filter = si->si_filterstr.bv_val;
 403                 attrs = si->si_attrs;
 404                 attrsonly = si->si_attrsonly;
 405                 scope = si->si_scope;
 406         }
 407         if ( si->si_syncdata && si->si_logstate == SYNCLOG_FALLBACK ) {
 408                 si->si_type = LDAP_SYNC_REFRESH_ONLY;
 409         } else {
 410                 si->si_type = si->si_ctype;
 411         }
 412
 413         if ( !BER_BVISNULL( &si->si_syncCookie.octet_str ) )
 414         {
 415                 ber_printf( ber, "{eOb}",
 416                         abs(si->si_type), &si->si_syncCookie.octet_str, rhint );
 417         } else {
 418                 ber_printf( ber, "{eb}",
 419                         abs(si->si_type), rhint );
 420         }
 421
 422         if ( (rc = ber_flatten2( ber, &c[0].ldctl_value, 0 ) ) == -1 ) {
 423                 ber_free_buf( ber );
 424                 return rc;
 425         }
 426
 427         c[0].ldctl_oid = LDAP_CONTROL_SYNC;
 428         c[0].ldctl_iscritical = si->si_type < 0;
 429         ctrls[0] = &c[0];
 430
 431         c[1].ldctl_oid = LDAP_CONTROL_MANAGEDSAIT;
 432         BER_BVZERO( &c[1].ldctl_value );
 433         c[1].ldctl_iscritical = 1;
 434         ctrls[1] = &c[1];
 435
 436         if ( !BER_BVISNULL( &si->si_bindconf.sb_authzId ) ) {
 437                 c[2].ldctl_oid = LDAP_CONTROL_PROXY_AUTHZ;
 438                 c[2].ldctl_value = si->si_bindconf.sb_authzId;
 439                 c[2].ldctl_iscritical = 1;
 440                 ctrls[2] = &c[2];
 441                 ctrls[3] = NULL;
 442         } else {
 443                 ctrls[2] = NULL;
 444         }
 445
 446         rc = ldap_search_ext( si->si_ld, base, scope, filter, attrs, attrsonly,
 447                 ctrls, NULL, NULL, si->si_slimit, &si->si_msgid );
 448         ber_free_buf( ber );
 449         return rc;
 450 }
 451
 452 static int
 453 check_syncprov(
 454         Operation *op,
 455         syncinfo_t *si )
 456 {
 457         AttributeName at[2];
 458         Attribute a = {0};
 459         Entry e = {0};
 460         SlapReply rs = {0};
 461         int i, j, changed = 0;
 462
 463         /* Look for contextCSN from syncprov overlay. If
 464          * there's no overlay, this will be a no-op. That means
 465          * this is a pure consumer, so local changes will not be
 466          * allowed, and all changes will already be reflected in
 467          * the cookieState.
 468          */
 469         a.a_desc = slap_schema.si_ad_contextCSN;
 470         e.e_attrs = &a;
 471         e.e_name = si->si_contextdn;
 472         e.e_nname = si->si_contextdn;
 473         at[0].an_name = a.a_desc->ad_cname;
 474         at[0].an_desc = a.a_desc;
 475         BER_BVZERO( &at[1].an_name );
 476         rs.sr_entry = &e;
 477         rs.sr_flags = REP_ENTRY_MODIFIABLE;
 478         rs.sr_attrs = at;
 479         op->o_req_dn = e.e_name;
 480         op->o_req_ndn = e.e_nname;
 481
 482         ldap_pvt_thread_mutex_lock( &si->si_cookieState->cs_mutex );
 483         i = backend_operational( op, &rs );
 484         if ( i == LDAP_SUCCESS && a.a_nvals ) {
 485                 int num = a.a_numvals;
 486                 /* check for differences */
 487                 if ( num != si->si_cookieState->cs_num ) {
 488                         changed = 1;
 489                 } else {
 490                         for ( i=0; i<num; i++ ) {
 491                                 if ( ber_bvcmp( &a.a_nvals[i],
 492                                         &si->si_cookieState->cs_vals[i] )) {
 493                                         changed = 1;
 494                                         break;
 495                                 }
 496                         }
 497                 }
 498                 if ( changed ) {
 499                         ber_bvarray_free( si->si_cookieState->cs_vals );
 500                         ch_free( si->si_cookieState->cs_sids );
 501                         si->si_cookieState->cs_num = num;
 502                         si->si_cookieState->cs_vals = a.a_nvals;
 503                         si->si_cookieState->cs_sids = slap_parse_csn_sids( a.a_nvals,
 504                                 num, NULL );
 505                         si->si_cookieState->cs_age++;
 506                 } else {
 507                         ber_bvarray_free( a.a_nvals );
 508                 }
 509                 ber_bvarray_free( a.a_vals );
 510         }
 511         /* See if the cookieState has changed due to anything outside
 512          * this particular consumer. That includes other consumers in
 513          * the same context, or local changes detected above.
 514          */
 515         if ( si->si_cookieState->cs_num > 0 && si->si_cookieAge !=
 516                 si->si_cookieState->cs_age ) {
 517                 if ( !si->si_syncCookie.numcsns ) {
 518                         ber_bvarray_free( si->si_syncCookie.ctxcsn );
 519                         ber_bvarray_dup_x( &si->si_syncCookie.ctxcsn,
 520                                 si->si_cookieState->cs_vals, NULL );
 521                         changed = 1;
 522                 } else {
 523                         for (i=0; !BER_BVISNULL( &si->si_syncCookie.ctxcsn[i] ); i++) {
 524                                 /* bogus, just dup everything */
 525                                 if ( si->si_syncCookie.sids[i] == -1 ) {
 526                                         ber_bvarray_free( si->si_syncCookie.ctxcsn );
 527                                         ber_bvarray_dup_x( &si->si_syncCookie.ctxcsn,
 528                                                 si->si_cookieState->cs_vals, NULL );
 529                                         changed = 1;
 530                                         break;
 531                                 }
 532                                 for (j=0; j<si->si_cookieState->cs_num; j++) {
 533                                         if ( si->si_syncCookie.sids[i] !=
 534                                                 si->si_cookieState->cs_sids[j] )
 535                                                 continue;
 536                                         if ( bvmatch( &si->si_syncCookie.ctxcsn[i],
 537                                                 &si->si_cookieState->cs_vals[j] ))
 538                                                 break;
 539                                         ber_bvreplace( &si->si_syncCookie.ctxcsn[i],
 540                                                 &si->si_cookieState->cs_vals[j] );
 541                                         changed = 1;
 542                                         break;
 543                                 }
 544                         }
 545                 }
 546         }
 547         if ( changed ) {
 548                 si->si_cookieAge = si->si_cookieState->cs_age;
 549                 ch_free( si->si_syncCookie.octet_str.bv_val );
 550                 slap_compose_sync_cookie( NULL, &si->si_syncCookie.octet_str,
 551                         si->si_syncCookie.ctxcsn, si->si_syncCookie.rid,
 552                         si->si_syncCookie.sid );
 553         }
 554         ldap_pvt_thread_mutex_unlock( &si->si_cookieState->cs_mutex );
 555         return changed;
 556 }
 557
 558 static int
 559 do_syncrep1(
 560         Operation *op,
 561         syncinfo_t *si )
 562 {
 563         int     rc;
 564         int cmdline_cookie_found = 0;
 565
 566         struct sync_cookie      *sc = NULL;
 567 #ifdef HAVE_TLS
 568         void    *ssl;
 569 #endif
 570
 571         rc = slap_client_connect( &si->si_ld, &si->si_bindconf );
 572         if ( rc != LDAP_SUCCESS ) {
 573                 goto done;
 574         }
 575         op->o_protocol = LDAP_VERSION3;
 576
 577         /* Set SSF to strongest of TLS, SASL SSFs */
 578         op->o_sasl_ssf = 0;
 579         op->o_tls_ssf = 0;
 580         op->o_transport_ssf = 0;
 581 #ifdef HAVE_TLS
 582         if ( ldap_get_option( si->si_ld, LDAP_OPT_X_TLS_SSL_CTX, &ssl )
 583                 == LDAP_SUCCESS && ssl != NULL )
 584         {
 585                 op->o_tls_ssf = ldap_pvt_tls_get_strength( ssl );
 586         }
 587 #endif /* HAVE_TLS */
 588         {
 589                 ber_len_t ssf; /* ITS#5403, 3864 LDAP_OPT_X_SASL_SSF probably ought
 590                                                   to use sasl_ssf_t but currently uses ber_len_t */
 591                 if ( ldap_get_option( si->si_ld, LDAP_OPT_X_SASL_SSF, &ssf )
 592                         == LDAP_SUCCESS )
 593                         op->o_sasl_ssf = ssf;
 594         }
 595         op->o_ssf = ( op->o_sasl_ssf > op->o_tls_ssf )
 596                 ?  op->o_sasl_ssf : op->o_tls_ssf;
 597
 598         ldap_set_option( si->si_ld, LDAP_OPT_TIMELIMIT, &si->si_tlimit );
 599
 600         rc = LDAP_DEREF_NEVER;  /* actually could allow DEREF_FINDING */
 601         ldap_set_option( si->si_ld, LDAP_OPT_DEREF, &rc );
 602
 603         ldap_set_option( si->si_ld, LDAP_OPT_REFERRALS, LDAP_OPT_OFF );
 604
 605         si->si_syncCookie.rid = si->si_rid;
 606
 607         /* whenever there are multiple data sources possible, advertise sid */
 608         si->si_syncCookie.sid = ( SLAP_MULTIMASTER( si->si_be ) || si->si_be != si->si_wbe ) ?
 609                 slap_serverID : -1;
 610
 611         /* We've just started up, or the remote server hasn't sent us
 612          * any meaningful state.
 613          */
 614         if ( BER_BVISNULL( &si->si_syncCookie.octet_str ) ) {
 615                 int i;
 616
 617                 LDAP_STAILQ_FOREACH( sc, &slap_sync_cookie, sc_next ) {
 618                         if ( si->si_rid == sc->rid ) {
 619                                 cmdline_cookie_found = 1;
 620                                 break;
 621                         }
 622                 }
 623
 624                 if ( cmdline_cookie_found ) {
 625                         /* cookie is supplied in the command line */
 626
 627                         LDAP_STAILQ_REMOVE( &slap_sync_cookie, sc, sync_cookie, sc_next );
 628
 629                         /* ctxcsn wasn't parsed yet, do it now */
 630                         slap_parse_sync_cookie( sc, op->o_tmpmemctx );
 631                         slap_sync_cookie_free( &si->si_syncCookie, 0 );
 632                         slap_dup_sync_cookie( &si->si_syncCookie, sc );
 633                         slap_sync_cookie_free( sc, 1 );
 634                 } else {
 635                         ldap_pvt_thread_mutex_lock( &si->si_cookieState->cs_mutex );
 636                         if ( !si->si_cookieState->cs_num ) {
 637                                 /* get contextCSN shadow replica from database */
 638                                 BerVarray csn = NULL;
 639                                 void *ctx = op->o_tmpmemctx;
 640
 641                                 op->o_req_ndn = si->si_contextdn;
 642                                 op->o_req_dn = op->o_req_ndn;
 643
 644                                 /* try to read stored contextCSN */
 645                                 op->o_tmpmemctx = NULL;
 646                                 backend_attribute( op, NULL, &op->o_req_ndn,
 647                                         slap_schema.si_ad_contextCSN, &csn, ACL_READ );
 648                                 op->o_tmpmemctx = ctx;
 649                                 if ( csn ) {
 650                                         si->si_cookieState->cs_vals = csn;
 651                                         for (i=0; !BER_BVISNULL( &csn[i] ); i++);
 652                                         si->si_cookieState->cs_num = i;
 653                                         si->si_cookieState->cs_sids = slap_parse_csn_sids( csn, i, NULL );
 654                                 }
 655                         }
 656                         if ( si->si_cookieState->cs_num ) {
 657                                 ber_bvarray_free( si->si_syncCookie.ctxcsn );
 658                                 if ( ber_bvarray_dup_x( &si->si_syncCookie.ctxcsn,
 659                                         si->si_cookieState->cs_vals, NULL )) {
 660                                         rc = LDAP_NO_MEMORY;
 661                                         ldap_pvt_thread_mutex_unlock( &si->si_cookieState->cs_mutex );
 662                                         goto done;
 663                                 }
 664                                 si->si_syncCookie.numcsns = si->si_cookieState->cs_num;
 665                                 si->si_syncCookie.sids = ch_malloc( si->si_cookieState->cs_num *
 666                                         sizeof(int) );
 667                                 for ( i=0; i<si->si_syncCookie.numcsns; i++ )
 668                                         si->si_syncCookie.sids[i] = si->si_cookieState->cs_sids[i];
 669                         }
 670                         ldap_pvt_thread_mutex_unlock( &si->si_cookieState->cs_mutex );
 671                 }
 672
 673                 slap_compose_sync_cookie( NULL, &si->si_syncCookie.octet_str,
 674                         si->si_syncCookie.ctxcsn, si->si_syncCookie.rid,
 675                         si->si_syncCookie.sid );
 676         } else {
 677                 /* ITS#6367: recreate the cookie so it has our SID, not our peer's */
 678                 ch_free( si->si_syncCookie.octet_str.bv_val );
 679                 slap_compose_sync_cookie( NULL, &si->si_syncCookie.octet_str,
 680                         si->si_syncCookie.ctxcsn, si->si_syncCookie.rid,
 681                         si->si_syncCookie.sid );
 682                 /* Look for contextCSN from syncprov overlay. */
 683                 check_syncprov( op, si );
 684         }
 685
 686         si->si_refreshDone = 0;
 687
 688         rc = ldap_sync_search( si, op->o_tmpmemctx );
 689
 690         if( rc != LDAP_SUCCESS ) {
 691                 Debug( LDAP_DEBUG_ANY, "do_syncrep1: %s "
 692                         "ldap_search_ext: %s (%d)\n",
 693                         si->si_ridtxt, ldap_err2string( rc ), rc );
 694         }
 695
 696 done:
 697         if ( rc ) {
 698                 if ( si->si_ld ) {
 699                         ldap_unbind_ext( si->si_ld, NULL, NULL );
 700                         si->si_ld = NULL;
 701                 }
 702         }
 703
 704         return rc;
 705 }
 706
 707 static int
 708 compare_csns( struct sync_cookie *sc1, struct sync_cookie *sc2, int *which )
 709 {
 710         int i, j, match = 0;
 711         const char *text;
 712
 713         *which = 0;
 714
 715         if ( sc1->numcsns < sc2->numcsns ) {
 716                 *which = sc1->numcsns;
 717                 return -1;
 718         }
 719
 720         for (j=0; j<sc2->numcsns; j++) {
 721                 for (i=0; i<sc1->numcsns; i++) {
 722                         if ( sc1->sids[i] != sc2->sids[j] )
 723                                 continue;
 724                         value_match( &match, slap_schema.si_ad_entryCSN,
 725                                 slap_schema.si_ad_entryCSN->ad_type->sat_ordering,
 726                                 SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
 727                                 &sc1->ctxcsn[i], &sc2->ctxcsn[j], &text );
 728                         if ( match < 0 ) {
 729                                 *which = j;
 730                                 return match;
 731                         }
 732                         break;
 733                 }
 734                 if ( i == sc1->numcsns ) {
 735                         /* sc2 has a sid sc1 lacks */
 736                         *which = j;
 737                         return -1;
 738                 }
 739         }
 740         return match;
 741 }
 742
 743 #define SYNC_PAUSED     -3
 744
 745 static int
 746 do_syncrep2(
 747         Operation *op,
 748         syncinfo_t *si )
 749 {
 750         LDAPControl     **rctrls = NULL;
 751
 752         BerElementBuffer berbuf;
 753         BerElement      *ber = (BerElement *)&berbuf;
 754
 755         LDAPMessage     *msg = NULL;
 756
 757         char            *retoid = NULL;
 758         struct berval   *retdata = NULL;
 759
 760         Entry           *entry = NULL;
 761
 762         int             syncstate;
 763         struct berval   syncUUID = BER_BVNULL;
 764         struct sync_cookie      syncCookie = { NULL };
 765         struct sync_cookie      syncCookie_req = { NULL };
 766         struct berval           cookie = BER_BVNULL;
 767
 768         int             rc,
 769                         err = LDAP_SUCCESS;
 770         ber_len_t       len;
 771
 772         Modifications   *modlist = NULL;
 773
 774         int                             match, m, punlock = -1;
 775
 776         struct timeval *tout_p = NULL;
 777         struct timeval tout = { 0, 0 };
 778
 779         int             refreshDeletes = 0;
 780         BerVarray syncUUIDs = NULL;
 781         ber_tag_t si_tag;
 782
 783         if ( slapd_shutdown ) {
 784                 rc = -2;
 785                 goto done;
 786         }
 787
 788         ber_init2( ber, NULL, LBER_USE_DER );
 789         ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
 790
 791         Debug( LDAP_DEBUG_TRACE, "=>do_syncrep2 %s\n", si->si_ridtxt, 0, 0 );
 792
 793         slap_dup_sync_cookie( &syncCookie_req, &si->si_syncCookie );
 794
 795         if ( abs(si->si_type) == LDAP_SYNC_REFRESH_AND_PERSIST ) {
 796                 tout_p = &tout;
 797         } else {
 798                 tout_p = NULL;
 799         }
 800
 801         while ( ( rc = ldap_result( si->si_ld, si->si_msgid, LDAP_MSG_ONE,
 802                 tout_p, &msg ) ) > 0 )
 803         {
 804                 LDAPControl     *rctrlp = NULL;
 805
 806                 if ( slapd_shutdown ) {
 807                         rc = -2;
 808                         goto done;
 809                 }
 810                 switch( ldap_msgtype( msg ) ) {
 811                 case LDAP_RES_SEARCH_ENTRY:
 812                         ldap_get_entry_controls( si->si_ld, msg, &rctrls );
 813                         /* we can't work without the control */
 814                         if ( rctrls ) {
 815                                 LDAPControl **next = NULL;
 816                                 /* NOTE: make sure we use the right one;
 817                                  * a better approach would be to run thru
 818                                  * the whole list and take care of all */
 819                                 /* NOTE: since we issue the search request,
 820                                  * we should know what controls to expect,
 821                                  * and there should be none apart from the
 822                                  * sync-related control */
 823                                 rctrlp = ldap_control_find( LDAP_CONTROL_SYNC_STATE, rctrls, &next );
 824                                 if ( next && ldap_control_find( LDAP_CONTROL_SYNC_STATE, next, NULL ) )
 825                                 {
 826                                         Debug( LDAP_DEBUG_ANY, "do_syncrep2: %s "
 827                                                 "got search entry with multiple "
 828                                                 "Sync State control\n", si->si_ridtxt, 0, 0 );
 829                                         ldap_controls_free( rctrls );
 830                                         rc = -1;
 831                                         goto done;
 832                                 }
 833                         }
 834                         if ( rctrlp == NULL ) {
 835                                 Debug( LDAP_DEBUG_ANY, "do_syncrep2: %s "
 836                                         "got search entry without "
 837                                         "Sync State control\n", si->si_ridtxt, 0, 0 );
 838                                 rc = -1;
 839                                 goto done;
 840                         }
 841                         ber_init2( ber, &rctrlp->ldctl_value, LBER_USE_DER );
 842                         ber_scanf( ber, "{em" /*"}"*/, &syncstate, &syncUUID );
 843                         /* FIXME: what if syncUUID is NULL or empty?
 844                          * (happens with back-sql...) */
 845                         if ( BER_BVISEMPTY( &syncUUID ) ) {
 846                                 Debug( LDAP_DEBUG_ANY, "do_syncrep2: %s "
 847                                         "got empty syncUUID with LDAP_SYNC_%s\n",
 848                                         si->si_ridtxt,
 849                                         syncrepl_state2str( syncstate ), 0 );
 850                                 ldap_controls_free( rctrls );
 851                                 rc = -1;
 852                                 goto done;
 853                         }
 854                         if ( ber_peek_tag( ber, &len ) == LDAP_TAG_SYNC_COOKIE ) {
 855                                 ber_scanf( ber, /*"{"*/ "m}", &cookie );
 856
 857                                 Debug( LDAP_DEBUG_SYNC, "do_syncrep2: %s cookie=%s\n",
 858                                         si->si_ridtxt,
 859                                         BER_BVISNULL( &cookie ) ? "" : cookie.bv_val, 0 );
 860
 861                                 if ( !BER_BVISNULL( &cookie ) ) {
 862                                         ch_free( syncCookie.octet_str.bv_val );
 863                                         ber_dupbv( &syncCookie.octet_str, &cookie );
 864                                 }
 865                                 if ( !BER_BVISNULL( &syncCookie.octet_str ) )
 866                                 {
 867                                         slap_parse_sync_cookie( &syncCookie, NULL );
 868                                         if ( syncCookie.ctxcsn ) {
 869                                                 int i, sid = slap_parse_csn_sid( syncCookie.ctxcsn );
 870                                                 check_syncprov( op, si );
 871                                                 for ( i =0; i<si->si_cookieState->cs_num; i++ ) {
 872                                                         if ( si->si_cookieState->cs_sids[i] == sid ) {
 873                                                                 if ( ber_bvcmp( syncCookie.ctxcsn, &si->si_cookieState->cs_vals[i] ) <= 0 ) {
 874                                                                         Debug( LDAP_DEBUG_SYNC, "do_syncrep2: %s CSN too old, ignoring %s\n",
 875                                                                                 si->si_ridtxt, syncCookie.ctxcsn->bv_val, 0 );
 876                                                                         ldap_controls_free( rctrls );
 877                                                                         rc = 0;
 878                                                                         goto done;
 879                                                                 }
 880                                                                 break;
 881                                                         }
 882                                                 }
 883                                                 /* check pending CSNs too */
 884                                                 while ( ldap_pvt_thread_mutex_trylock( &si->si_cookieState->cs_pmutex )) {
 885                                                         if ( slapd_shutdown ) {
 886                                                                 rc = -2;
 887                                                                 goto done;
 888                                                         }
 889                                                         if ( !ldap_pvt_thread_pool_pausecheck( &connection_pool ))
 890                                                                 ldap_pvt_thread_yield();
 891                                                 }
 892                                                 for ( i =0; i<si->si_cookieState->cs_pnum; i++ ) {
 893                                                         if ( si->si_cookieState->cs_psids[i] == sid ) {
 894                                                                 if ( ber_bvcmp( syncCookie.ctxcsn, &si->si_cookieState->cs_pvals[i] ) <= 0 ) {
 895                                                                         Debug( LDAP_DEBUG_SYNC, "do_syncrep2: %s CSN pending, ignoring %s\n",
 896                                                                                 si->si_ridtxt, syncCookie.ctxcsn->bv_val, 0 );
 897                                                                         ldap_controls_free( rctrls );
 898                                                                         rc = 0;
 899                                                                         ldap_pvt_thread_mutex_unlock( &si->si_cookieState->cs_pmutex );
 900                                                                         goto done;
 901                                                                 }
 902                                                                 ber_bvreplace( &si->si_cookieState->cs_pvals[i],
 903                                                                         syncCookie.ctxcsn );
 904                                                                 break;
 905                                                         }
 906                                                 }
 907                                                 /* new SID, add it */
 908                                                 if ( i == si->si_cookieState->cs_pnum ) {
 909                                                         value_add( &si->si_cookieState->cs_pvals, syncCookie.ctxcsn );
 910                                                         si->si_cookieState->cs_pnum++;
 911                                                         si->si_cookieState->cs_psids = ch_realloc( si->si_cookieState->cs_psids, si->si_cookieState->cs_pnum * sizeof(int));
 912                                                         si->si_cookieState->cs_psids[i] = sid;
 913                                                 }
 914                                                 punlock = i;
 915                                         }
 916                                         op->o_controls[slap_cids.sc_LDAPsync] = &syncCookie;
 917                                 }
 918                         }
 919                         rc = 0;
 920                         if ( si->si_syncdata && si->si_logstate == SYNCLOG_LOGGING ) {
 921                                 modlist = NULL;
 922                                 if ( ( rc = syncrepl_message_to_op( si, op, msg ) ) == LDAP_SUCCESS &&
 923                                         syncCookie.ctxcsn )
 924                                 {
 925                                         rc = syncrepl_updateCookie( si, op, &syncCookie );
 926                                 } else switch ( rc ) {
 927                                         case LDAP_ALREADY_EXISTS:
 928                                         case LDAP_NO_SUCH_OBJECT:
 929                                         case LDAP_NO_SUCH_ATTRIBUTE:
 930                                         case LDAP_TYPE_OR_VALUE_EXISTS:
 931                                                 rc = LDAP_SYNC_REFRESH_REQUIRED;
 932                                                 si->si_logstate = SYNCLOG_FALLBACK;
 933                                                 ldap_abandon_ext( si->si_ld, si->si_msgid, NULL, NULL );
 934                                                 break;
 935                                         default:
 936                                                 break;
 937                                 }
 938                         } else if ( ( rc = syncrepl_message_to_entry( si, op, msg,
 939                                 &modlist, &entry, syncstate ) ) == LDAP_SUCCESS )
 940                         {
 941                                 if ( ( rc = syncrepl_entry( si, op, entry, &modlist,
 942                                         syncstate, &syncUUID, syncCookie.ctxcsn ) ) == LDAP_SUCCESS &&
 943                                         syncCookie.ctxcsn )
 944                                 {
 945                                         rc = syncrepl_updateCookie( si, op, &syncCookie );
 946                                 }
 947                         }
 948                         if ( punlock >= 0 ) {
 949                                 /* on failure, revert pending CSN */
 950                                 if ( rc != LDAP_SUCCESS ) {
 951                                         int i;
 952                                         for ( i = 0; i<si->si_cookieState->cs_num; i++ ) {
 953                                                 if ( si->si_cookieState->cs_sids[i] == si->si_cookieState->cs_psids[punlock] ) {
 954                                                         ber_bvreplace( &si->si_cookieState->cs_pvals[punlock],
 955                                                                 &si->si_cookieState->cs_vals[i] );
 956                                                         break;
 957                                                 }
 958                                         }
 959                                         if ( i == si->si_cookieState->cs_num )
 960                                                 si->si_cookieState->cs_pvals[punlock].bv_val[0] = '\0';
 961                                 }
 962                                 ldap_pvt_thread_mutex_unlock( &si->si_cookieState->cs_pmutex );
 963                         }
 964                         ldap_controls_free( rctrls );
 965                         if ( modlist ) {
 966                                 slap_mods_free( modlist, 1 );
 967                         }
 968                         if ( rc )
 969                                 goto done;
 970                         break;
 971
 972                 case LDAP_RES_SEARCH_REFERENCE:
 973                         Debug( LDAP_DEBUG_ANY,
 974                                 "do_syncrep2: %s reference received error\n",
 975                                 si->si_ridtxt, 0, 0 );
 976                         break;
 977
 978                 case LDAP_RES_SEARCH_RESULT:
 979                         Debug( LDAP_DEBUG_SYNC,
 980                                 "do_syncrep2: %s LDAP_RES_SEARCH_RESULT\n",
 981                                 si->si_ridtxt, 0, 0 );
 982                         ldap_parse_result( si->si_ld, msg, &err, NULL, NULL, NULL,
 983                                 &rctrls, 0 );
 984 #ifdef LDAP_X_SYNC_REFRESH_REQUIRED
 985                         if ( err == LDAP_X_SYNC_REFRESH_REQUIRED ) {
 986                                 /* map old result code to registered code */
 987                                 err = LDAP_SYNC_REFRESH_REQUIRED;
 988                         }
 989 #endif
 990                         if ( err == LDAP_SYNC_REFRESH_REQUIRED ) {
 991                                 if ( si->si_logstate == SYNCLOG_LOGGING ) {
 992                                         si->si_logstate = SYNCLOG_FALLBACK;
 993                                 }
 994                                 rc = err;
 995                                 goto done;
 996                         }
 997                         if ( err ) {
 998                                 Debug( LDAP_DEBUG_ANY,
 999                                         "do_syncrep2: %s LDAP_RES_SEARCH_RESULT (%d) %s\n",
1000                                         si->si_ridtxt, err, ldap_err2string( err ) );
1001                         }
1002                         if ( rctrls ) {
1003                                 LDAPControl **next = NULL;
1004                                 /* NOTE: make sure we use the right one;
1005                                  * a better approach would be to run thru
1006                                  * the whole list and take care of all */
1007                                 /* NOTE: since we issue the search request,
1008                                  * we should know what controls to expect,
1009                                  * and there should be none apart from the
1010                                  * sync-related control */
1011                                 rctrlp = ldap_control_find( LDAP_CONTROL_SYNC_DONE, rctrls, &next );
1012                                 if ( next && ldap_control_find( LDAP_CONTROL_SYNC_DONE, next, NULL ) )
1013                                 {
1014                                         Debug( LDAP_DEBUG_ANY, "do_syncrep2: %s "
1015                                                 "got search result with multiple "
1016                                                 "Sync State control\n", si->si_ridtxt, 0, 0 );
1017                                         ldap_controls_free( rctrls );
1018                                         rc = -1;
1019                                         goto done;
1020                                 }
1021                         }
1022                         if ( rctrlp ) {
1023                                 ber_init2( ber, &rctrlp->ldctl_value, LBER_USE_DER );
1024
1025                                 ber_scanf( ber, "{" /*"}"*/);
1026                                 if ( ber_peek_tag( ber, &len ) == LDAP_TAG_SYNC_COOKIE ) {
1027                                         ber_scanf( ber, "m", &cookie );
1028
1029                                         Debug( LDAP_DEBUG_SYNC, "do_syncrep2: %s cookie=%s\n",
1030                                                 si->si_ridtxt,
1031                                                 BER_BVISNULL( &cookie ) ? "" : cookie.bv_val, 0 );
1032
1033                                         if ( !BER_BVISNULL( &cookie ) ) {
1034                                                 ch_free( syncCookie.octet_str.bv_val );
1035                                                 ber_dupbv( &syncCookie.octet_str, &cookie);
1036                                         }
1037                                         if ( !BER_BVISNULL( &syncCookie.octet_str ) )
1038                                         {
1039                                                 slap_parse_sync_cookie( &syncCookie, NULL );
1040                                                 op->o_controls[slap_cids.sc_LDAPsync] = &syncCookie;
1041                                         }
1042                                 }
1043                                 if ( ber_peek_tag( ber, &len ) == LDAP_TAG_REFRESHDELETES )
1044                                 {
1045                                         ber_scanf( ber, "b", &refreshDeletes );
1046                                 }
1047                                 ber_scanf( ber, /*"{"*/ "}" );
1048                         }
1049                         if ( SLAP_MULTIMASTER( op->o_bd ) && check_syncprov( op, si )) {
1050                                 slap_sync_cookie_free( &syncCookie_req, 0 );
1051                                 slap_dup_sync_cookie( &syncCookie_req, &si->si_syncCookie );
1052                         }
1053                         if ( !syncCookie.ctxcsn ) {
1054                                 match = 1;
1055                         } else if ( !syncCookie_req.ctxcsn ) {
1056                                 match = -1;
1057                                 m = 0;
1058                         } else {
1059                                 match = compare_csns( &syncCookie_req, &syncCookie, &m );
1060                         }
1061                         if ( rctrls ) {
1062                                 ldap_controls_free( rctrls );
1063                         }
1064                         if (si->si_type != LDAP_SYNC_REFRESH_AND_PERSIST) {
1065                                 /* FIXME : different error behaviors according to
1066                                  *      1) err code : LDAP_BUSY ...
1067                                  *      2) on err policy : stop service, stop sync, retry
1068                                  */
1069                                 if ( refreshDeletes == 0 && match < 0 &&
1070                                         err == LDAP_SUCCESS &&
1071                                         syncCookie_req.numcsns == syncCookie.numcsns )
1072                                 {
1073                                         syncrepl_del_nonpresent( op, si, NULL,
1074                                                 &syncCookie, m );
1075                                 } else {
1076                                         avl_free( si->si_presentlist, ch_free );
1077                                         si->si_presentlist = NULL;
1078                                 }
1079                         }
1080                         if ( syncCookie.ctxcsn && match < 0 && err == LDAP_SUCCESS )
1081                         {
1082                                 rc = syncrepl_updateCookie( si, op, &syncCookie );
1083                         }
1084                         if ( err == LDAP_SUCCESS
1085                                 && si->si_logstate == SYNCLOG_FALLBACK ) {
1086                                 si->si_logstate = SYNCLOG_LOGGING;
1087                                 rc = LDAP_SYNC_REFRESH_REQUIRED;
1088                         } else {
1089                                 rc = -2;
1090                         }
1091                         goto done;
1092                         break;
1093
1094                 case LDAP_RES_INTERMEDIATE:
1095                         rc = ldap_parse_intermediate( si->si_ld, msg,
1096                                 &retoid, &retdata, NULL, 0 );
1097                         if ( !rc && !strcmp( retoid, LDAP_SYNC_INFO ) ) {
1098                                 ber_init2( ber, retdata, LBER_USE_DER );
1099
1100                                 switch ( si_tag = ber_peek_tag( ber, &len ) ) {
1101                                 ber_tag_t tag;
1102                                 case LDAP_TAG_SYNC_NEW_COOKIE:
1103                                         Debug( LDAP_DEBUG_SYNC,
1104                                                 "do_syncrep2: %s %s - %s\n",
1105                                                 si->si_ridtxt,
1106                                                 "LDAP_RES_INTERMEDIATE",
1107                                                 "NEW_COOKIE" );
1108                                         ber_scanf( ber, "tm", &tag, &cookie );
1109                                         Debug( LDAP_DEBUG_SYNC,
1110                                                 "do_syncrep2: %s NEW_COOKIE: %s\n",
1111                                                 si->si_ridtxt,
1112                                                 cookie.bv_val, 0);
1113                                         if ( !BER_BVISNULL( &cookie ) ) {
1114                                                 ch_free( syncCookie.octet_str.bv_val );
1115                                                 ber_dupbv( &syncCookie.octet_str, &cookie );
1116                                         }
1117                                         if (!BER_BVISNULL( &syncCookie.octet_str ) ) {
1118                                                 slap_parse_sync_cookie( &syncCookie, NULL );
1119                                                 op->o_controls[slap_cids.sc_LDAPsync] = &syncCookie;
1120                                         }
1121                                         break;
1122                                 case LDAP_TAG_SYNC_REFRESH_DELETE:
1123                                 case LDAP_TAG_SYNC_REFRESH_PRESENT:
1124                                         Debug( LDAP_DEBUG_SYNC,
1125                                                 "do_syncrep2: %s %s - %s\n",
1126                                                 si->si_ridtxt,
1127                                                 "LDAP_RES_INTERMEDIATE",
1128                                                 si_tag == LDAP_TAG_SYNC_REFRESH_PRESENT ?
1129                                                 "REFRESH_PRESENT" : "REFRESH_DELETE" );
1130                                         if ( si_tag == LDAP_TAG_SYNC_REFRESH_DELETE ) {
1131                                                 si->si_refreshDelete = 1;
1132                                         } else {
1133                                                 si->si_refreshPresent = 1;
1134                                         }
1135                                         ber_scanf( ber, "t{" /*"}"*/, &tag );
1136                                         if ( ber_peek_tag( ber, &len ) == LDAP_TAG_SYNC_COOKIE )
1137                                         {
1138                                                 ber_scanf( ber, "m", &cookie );
1139
1140                                                 Debug( LDAP_DEBUG_SYNC, "do_syncrep2: %s cookie=%s\n",
1141                                                         si->si_ridtxt,
1142                                                         BER_BVISNULL( &cookie ) ? "" : cookie.bv_val, 0 );
1143
1144                                                 if ( !BER_BVISNULL( &cookie ) ) {
1145                                                         ch_free( syncCookie.octet_str.bv_val );
1146                                                         ber_dupbv( &syncCookie.octet_str, &cookie );
1147                                                 }
1148                                                 if ( !BER_BVISNULL( &syncCookie.octet_str ) )
1149                                                 {
1150                                                         slap_parse_sync_cookie( &syncCookie, NULL );
1151                                                         op->o_controls[slap_cids.sc_LDAPsync] = &syncCookie;
1152                                                 }
1153                                         }
1154                                         /* Defaults to TRUE */
1155                                         if ( ber_peek_tag( ber, &len ) ==
1156                                                 LDAP_TAG_REFRESHDONE )
1157                                         {
1158                                                 ber_scanf( ber, "b", &si->si_refreshDone );
1159                                         } else
1160                                         {
1161                                                 si->si_refreshDone = 1;
1162                                         }
1163                                         ber_scanf( ber, /*"{"*/ "}" );
1164                                         break;
1165                                 case LDAP_TAG_SYNC_ID_SET:
1166                                         Debug( LDAP_DEBUG_SYNC,
1167                                                 "do_syncrep2: %s %s - %s\n",
1168                                                 si->si_ridtxt,
1169                                                 "LDAP_RES_INTERMEDIATE",
1170                                                 "SYNC_ID_SET" );
1171                                         ber_scanf( ber, "t{" /*"}"*/, &tag );
1172                                         if ( ber_peek_tag( ber, &len ) ==
1173                                                 LDAP_TAG_SYNC_COOKIE )
1174                                         {
1175                                                 ber_scanf( ber, "m", &cookie );
1176
1177                                                 Debug( LDAP_DEBUG_SYNC, "do_syncrep2: %s cookie=%s\n",
1178                                                         si->si_ridtxt,
1179                                                         BER_BVISNULL( &cookie ) ? "" : cookie.bv_val, 0 );
1180
1181                                                 if ( !BER_BVISNULL( &cookie ) ) {
1182                                                         ch_free( syncCookie.octet_str.bv_val );
1183                                                         ber_dupbv( &syncCookie.octet_str, &cookie );
1184                                                 }
1185                                                 if ( !BER_BVISNULL( &syncCookie.octet_str ) )
1186                                                 {
1187                                                         slap_parse_sync_cookie( &syncCookie, NULL );
1188                                                         op->o_controls[slap_cids.sc_LDAPsync] = &syncCookie;
1189                                                         compare_csns( &syncCookie_req, &syncCookie, &m );
1190                                                 }
1191                                         }
1192                                         if ( ber_peek_tag( ber, &len ) ==
1193                                                 LDAP_TAG_REFRESHDELETES )
1194                                         {
1195                                                 ber_scanf( ber, "b", &refreshDeletes );
1196                                         }
1197                                         ber_scanf( ber, "[W]", &syncUUIDs );
1198                                         ber_scanf( ber, /*"{"*/ "}" );
1199                                         if ( refreshDeletes ) {
1200                                                 syncrepl_del_nonpresent( op, si, syncUUIDs,
1201                                                         &syncCookie, m );
1202                                                 ber_bvarray_free_x( syncUUIDs, op->o_tmpmemctx );
1203                                         } else {
1204                                                 int i;
1205                                                 for ( i = 0; !BER_BVISNULL( &syncUUIDs[i] ); i++ ) {
1206                                                         (void)avl_presentlist_insert( si, &syncUUIDs[i] );
1207                                                         slap_sl_free( syncUUIDs[i].bv_val, op->o_tmpmemctx );
1208                                                 }
1209                                                 slap_sl_free( syncUUIDs, op->o_tmpmemctx );
1210                                         }
1211                                         slap_sync_cookie_free( &syncCookie, 0 );
1212                                         break;
1213                                 default:
1214                                         Debug( LDAP_DEBUG_ANY,
1215                                                 "do_syncrep2: %s unknown syncinfo tag (%ld)\n",
1216                                                 si->si_ridtxt, (long) si_tag, 0 );
1217                                         ldap_memfree( retoid );
1218                                         ber_bvfree( retdata );
1219                                         continue;
1220                                 }
1221
1222                                 if ( SLAP_MULTIMASTER( op->o_bd ) && check_syncprov( op, si )) {
1223                                         slap_sync_cookie_free( &syncCookie_req, 0 );
1224                                         slap_dup_sync_cookie( &syncCookie_req, &si->si_syncCookie );
1225                                 }
1226                                 if ( !syncCookie.ctxcsn ) {
1227                                         match = 1;
1228                                 } else if ( !syncCookie_req.ctxcsn ) {
1229                                         match = -1;
1230                                         m = 0;
1231                                 } else {
1232                                         match = compare_csns( &syncCookie_req, &syncCookie, &m );
1233                                 }
1234
1235                                 if ( match < 0 ) {
1236                                         if ( si->si_refreshPresent == 1 &&
1237                                                 si_tag != LDAP_TAG_SYNC_NEW_COOKIE &&
1238                                                 syncCookie_req.numcsns == syncCookie.numcsns ) {
1239                                                 syncrepl_del_nonpresent( op, si, NULL,
1240                                                         &syncCookie, m );
1241                                         }
1242
1243                                         if ( syncCookie.ctxcsn )
1244                                         {
1245                                                 rc = syncrepl_updateCookie( si, op, &syncCookie);
1246                                         }
1247                                 }
1248
1249                                 ldap_memfree( retoid );
1250                                 ber_bvfree( retdata );
1251                                 break;
1252
1253                         } else {
1254                                 Debug( LDAP_DEBUG_ANY, "do_syncrep2: %s "
1255                                         "unknown intermediate response (%d)\n",
1256                                         si->si_ridtxt, rc, 0 );
1257                                 ldap_memfree( retoid );
1258                                 ber_bvfree( retdata );
1259                                 break;
1260                         }
1261                         break;
1262
1263                 default:
1264                         Debug( LDAP_DEBUG_ANY, "do_syncrep2: %s "
1265                                 "unknown message (0x%02lx)\n",
1266                                 si->si_ridtxt,
1267                                 (unsigned long)ldap_msgtype( msg ), 0 );
1268                         break;
1269
1270                 }
1271                 if ( !BER_BVISNULL( &syncCookie.octet_str ) ) {
1272                         slap_sync_cookie_free( &syncCookie_req, 0 );
1273                         slap_dup_sync_cookie( &syncCookie_req, &syncCookie );
1274                         slap_sync_cookie_free( &syncCookie, 0 );
1275                 }
1276                 ldap_msgfree( msg );
1277                 msg = NULL;
1278                 if ( ldap_pvt_thread_pool_pausing( &connection_pool )) {
1279                         slap_sync_cookie_free( &syncCookie, 0 );
1280                         slap_sync_cookie_free( &syncCookie_req, 0 );
1281                         return SYNC_PAUSED;
1282                 }
1283         }
1284
1285         if ( rc == -1 ) {
1286                 ldap_get_option( si->si_ld, LDAP_OPT_ERROR_NUMBER, &rc );
1287                 err = rc;
1288         }
1289
1290 done:
1291         if ( err != LDAP_SUCCESS ) {
1292                 Debug( LDAP_DEBUG_ANY,
1293                         "do_syncrep2: %s (%d) %s\n",
1294                         si->si_ridtxt, err, ldap_err2string( err ) );
1295         }
1296
1297         slap_sync_cookie_free( &syncCookie, 0 );
1298         slap_sync_cookie_free( &syncCookie_req, 0 );
1299
1300         if ( msg ) ldap_msgfree( msg );
1301
1302         if ( rc && rc != LDAP_SYNC_REFRESH_REQUIRED && si->si_ld ) {
1303                 if ( si->si_conn ) {
1304                         connection_client_stop( si->si_conn );
1305                         si->si_conn = NULL;
1306                 }
1307                 ldap_unbind_ext( si->si_ld, NULL, NULL );
1308                 si->si_ld = NULL;
1309         }
1310
1311         return rc;
1312 }
1313
1314 static void *
1315 do_syncrepl(
1316         void    *ctx,
1317         void    *arg )
1318 {
1319         struct re_s* rtask = arg;
1320         syncinfo_t *si = ( syncinfo_t * ) rtask->arg;
1321         Connection conn = {0};
1322         OperationBuffer opbuf;
1323         Operation *op;
1324         int rc = LDAP_SUCCESS;
1325         int dostop = 0;
1326         ber_socket_t s;
1327         int i, defer = 1, fail = 0, freeinfo = 0;
1328         Backend *be;
1329
1330         if ( si == NULL )
1331                 return NULL;
1332         if ( slapd_shutdown )
1333                 return NULL;
1334
1335         Debug( LDAP_DEBUG_TRACE, "=>do_syncrepl %s\n", si->si_ridtxt, 0, 0 );
1336
1337         /* Don't get stuck here while a pause is initiated */
1338         while ( ldap_pvt_thread_mutex_trylock( &si->si_mutex )) {
1339                 if ( slapd_shutdown )
1340                         return NULL;
1341                 if ( !ldap_pvt_thread_pool_pausecheck( &connection_pool ))
1342                         ldap_pvt_thread_yield();
1343         }
1344
1345         if ( si->si_ctype < 1 ) {
1346                 goto deleted;
1347         }
1348
1349         switch( abs( si->si_type ) ) {
1350         case LDAP_SYNC_REFRESH_ONLY:
1351         case LDAP_SYNC_REFRESH_AND_PERSIST:
1352                 break;
1353         default:
1354                 ldap_pvt_thread_mutex_unlock( &si->si_mutex );
1355                 return NULL;
1356         }
1357
1358         if ( slapd_shutdown ) {
1359                 if ( si->si_ld ) {
1360                         if ( si->si_conn ) {
1361                                 connection_client_stop( si->si_conn );
1362                                 si->si_conn = NULL;
1363                         }
1364                         ldap_unbind_ext( si->si_ld, NULL, NULL );
1365                         si->si_ld = NULL;
1366                 }
1367                 ldap_pvt_thread_mutex_unlock( &si->si_mutex );
1368                 return NULL;
1369         }
1370
1371         connection_fake_init( &conn, &opbuf, ctx );
1372         op = &opbuf.ob_op;
1373         /* o_connids must be unique for slap_graduate_commit_csn */
1374         op->o_connid = SLAPD_SYNC_RID2SYNCCONN(si->si_rid);
1375
1376         op->o_managedsait = SLAP_CONTROL_NONCRITICAL;
1377         be = si->si_be;
1378
1379         /* Coordinate contextCSN updates with any syncprov overlays
1380          * in use. This may be complicated by the use of the glue
1381          * overlay.
1382          *
1383          * Typically there is a single syncprov mastering the entire
1384          * glued tree. In that case, our contextCSN updates should
1385          * go to the master DB. But if there is no syncprov on the
1386          * master DB, then nothing special is needed here.
1387          *
1388          * Alternatively, there may be individual syncprov overlays
1389          * on each glued branch. In that case, each syncprov only
1390          * knows about changes within its own branch. And so our
1391          * contextCSN updates should only go to the local DB.
1392          */
1393         if ( !si->si_wbe ) {
1394                 if ( SLAP_GLUE_SUBORDINATE( be ) && !overlay_is_inst( be, "syncprov" )) {
1395                         BackendDB * top_be = select_backend( &be->be_nsuffix[0], 1 );
1396                         if ( overlay_is_inst( top_be, "syncprov" ))
1397                                 si->si_wbe = top_be;
1398                         else
1399                                 si->si_wbe = be;
1400                 } else {
1401                         si->si_wbe = be;
1402                 }
1403                 if ( SLAP_SYNC_SUBENTRY( si->si_wbe )) {
1404                         build_new_dn( &si->si_contextdn, &si->si_wbe->be_nsuffix[0],
1405                                 (struct berval *)&slap_ldapsync_cn_bv, NULL );
1406                 } else {
1407                         si->si_contextdn = si->si_wbe->be_nsuffix[0];
1408                 }
1409         }
1410         if ( !si->si_schemachecking )
1411                 op->o_no_schema_check = 1;
1412
1413         /* Establish session, do search */
1414         if ( !si->si_ld ) {
1415                 si->si_refreshDelete = 0;
1416                 si->si_refreshPresent = 0;
1417
1418                 /* use main DB when retrieving contextCSN */
1419                 op->o_bd = si->si_wbe;
1420                 op->o_dn = op->o_bd->be_rootdn;
1421                 op->o_ndn = op->o_bd->be_rootndn;
1422                 rc = do_syncrep1( op, si );
1423         }
1424
1425 reload:
1426         /* Process results */
1427         if ( rc == LDAP_SUCCESS ) {
1428                 ldap_get_option( si->si_ld, LDAP_OPT_DESC, &s );
1429
1430                 /* use current DB */
1431                 op->o_bd = be;
1432                 op->o_dn = op->o_bd->be_rootdn;
1433                 op->o_ndn = op->o_bd->be_rootndn;
1434                 rc = do_syncrep2( op, si );
1435                 if ( rc == LDAP_SYNC_REFRESH_REQUIRED ) {
1436                         rc = ldap_sync_search( si, op->o_tmpmemctx );
1437                         goto reload;
1438                 }
1439
1440 deleted:
1441                 /* We got deleted while running on cn=config */
1442                 if ( si->si_ctype < 1 ) {
1443                         if ( si->si_ctype == -1 ) {
1444                                 si->si_ctype = 0;
1445                                 freeinfo = 1;
1446                         }
1447                         if ( si->si_conn )
1448                                 dostop = 1;
1449                         rc = -1;
1450                 }
1451
1452                 if ( rc != SYNC_PAUSED ) {
1453                         if ( abs(si->si_type) == LDAP_SYNC_REFRESH_AND_PERSIST ) {
1454                                 /* If we succeeded, enable the connection for further listening.
1455                                  * If we failed, tear down the connection and reschedule.
1456                                  */
1457                                 if ( rc == LDAP_SUCCESS ) {
1458                                         if ( si->si_conn ) {
1459                                                 connection_client_enable( si->si_conn );
1460                                         } else {
1461                                                 si->si_conn = connection_client_setup( s, do_syncrepl, arg );
1462                                         }
1463                                 } else if ( si->si_conn ) {
1464                                         dostop = 1;
1465                                 }
1466                         } else {
1467                                 if ( rc == -2 ) rc = 0;
1468                         }
1469                 }
1470         }
1471
1472         /* At this point, we have 5 cases:
1473          * 1) for any hard failure, give up and remove this task
1474          * 2) for ServerDown, reschedule this task to run later
1475          * 3) for threadpool pause, reschedule to run immediately
1476          * 4) for Refresh and Success, reschedule to run
1477          * 5) for Persist and Success, reschedule to defer
1478          */
1479         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
1480
1481         if ( ldap_pvt_runqueue_isrunning( &slapd_rq, rtask ) ) {
1482                 ldap_pvt_runqueue_stoptask( &slapd_rq, rtask );
1483         }
1484
1485         if ( dostop ) {
1486                 connection_client_stop( si->si_conn );
1487                 si->si_conn = NULL;
1488         }
1489
1490         if ( rc == SYNC_PAUSED ) {
1491                 rtask->interval.tv_sec = 0;
1492                 ldap_pvt_runqueue_resched( &slapd_rq, rtask, 0 );
1493                 rtask->interval.tv_sec = si->si_interval;
1494                 rc = 0;
1495         } else if ( rc == LDAP_SUCCESS ) {
1496                 if ( si->si_type == LDAP_SYNC_REFRESH_ONLY ) {
1497                         defer = 0;
1498                 }
1499                 rtask->interval.tv_sec = si->si_interval;
1500                 ldap_pvt_runqueue_resched( &slapd_rq, rtask, defer );
1501                 if ( si->si_retrynum ) {
1502                         for ( i = 0; si->si_retrynum_init[i] != RETRYNUM_TAIL; i++ ) {
1503                                 si->si_retrynum[i] = si->si_retrynum_init[i];
1504                         }
1505                         si->si_retrynum[i] = RETRYNUM_TAIL;
1506                 }
1507         } else {
1508                 for ( i = 0; si->si_retrynum && si->si_retrynum[i] <= 0; i++ ) {
1509                         if ( si->si_retrynum[i] == RETRYNUM_FOREVER || si->si_retrynum[i] == RETRYNUM_TAIL )
1510                                 break;
1511                 }
1512
1513                 if ( si->si_ctype < 1
1514                         || !si->si_retrynum || si->si_retrynum[i] == RETRYNUM_TAIL ) {
1515                         if ( si->si_re ) {
1516                                 ldap_pvt_runqueue_remove( &slapd_rq, rtask );
1517                                 si->si_re = NULL;
1518                         }
1519                         fail = RETRYNUM_TAIL;
1520                 } else if ( RETRYNUM_VALID( si->si_retrynum[i] ) ) {
1521                         if ( si->si_retrynum[i] > 0 )
1522                                 si->si_retrynum[i]--;
1523                         fail = si->si_retrynum[i];
1524                         rtask->interval.tv_sec = si->si_retryinterval[i];
1525                         ldap_pvt_runqueue_resched( &slapd_rq, rtask, 0 );
1526                         slap_wake_listener();
1527                 }
1528         }
1529
1530         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
1531         ldap_pvt_thread_mutex_unlock( &si->si_mutex );
1532
1533         if ( rc ) {
1534                 if ( fail == RETRYNUM_TAIL ) {
1535                         Debug( LDAP_DEBUG_ANY,
1536                                 "do_syncrepl: %s rc %d quitting\n",
1537                                 si->si_ridtxt, rc, 0 );
1538                 } else if ( fail > 0 ) {
1539                         Debug( LDAP_DEBUG_ANY,
1540                                 "do_syncrepl: %s rc %d retrying (%d retries left)\n",
1541                                 si->si_ridtxt, rc, fail );
1542                 } else {
1543                         Debug( LDAP_DEBUG_ANY,
1544                                 "do_syncrepl: %s rc %d retrying\n",
1545                                 si->si_ridtxt, rc, 0 );
1546                 }
1547         }
1548
1549         /* Do final delete cleanup */
1550         if ( freeinfo ) {
1551                 syncinfo_free( si, 0 );
1552         }
1553         return NULL;
1554 }
1555
1556 static slap_verbmasks modops[] = {
1557         { BER_BVC("add"), LDAP_REQ_ADD },
1558         { BER_BVC("delete"), LDAP_REQ_DELETE },
1559         { BER_BVC("modify"), LDAP_REQ_MODIFY },
1560         { BER_BVC("modrdn"), LDAP_REQ_MODRDN},
1561         { BER_BVNULL, 0 }
1562 };
1563
1564 static int
1565 syncrepl_accesslog_mods(
1566         syncinfo_t *si,
1567         struct berval *vals,
1568         struct Modifications **modres
1569 )
1570 {
1571         char *colon;
1572         const char *text;
1573         AttributeDescription *ad;
1574         struct berval bv, bv2;
1575         short op;
1576         Modifications *mod = NULL, *modlist = NULL, **modtail;
1577         int i, rc = 0;
1578
1579         modtail = &modlist;
1580
1581         for (i=0; !BER_BVISNULL( &vals[i] ); i++) {
1582                 ad = NULL;
1583                 bv = vals[i];
1584
1585                 colon = ber_bvchr( &bv, ':' );
1586                 if ( !colon ) {
1587                         /* Invalid */
1588                         continue;
1589                 }
1590
1591                 bv.bv_len = colon - bv.bv_val;
1592                 if ( slap_bv2ad( &bv, &ad, &text ) ) {
1593                         /* Invalid */
1594                         Debug( LDAP_DEBUG_ANY, "syncrepl_accesslog_mods: %s "
1595                                 "Invalid attribute %s, %s\n",
1596                                 si->si_ridtxt, bv.bv_val, text );
1597                         slap_mods_free( modlist, 1 );
1598                         modlist = NULL;
1599                         rc = -1;
1600                         break;
1601                 }
1602
1603                 /* Ignore dynamically generated attrs */
1604                 if ( ad->ad_type->sat_flags & SLAP_AT_DYNAMIC ) {
1605                         continue;
1606                 }
1607
1608                 /* Ignore excluded attrs */
1609                 if ( ldap_charray_inlist( si->si_exattrs,
1610                         ad->ad_type->sat_cname.bv_val ) )
1611                 {
1612                         continue;
1613                 }
1614
1615                 switch(colon[1]) {
1616                 case '+':       op = LDAP_MOD_ADD; break;
1617                 case '-':       op = LDAP_MOD_DELETE; break;
1618                 case '=':       op = LDAP_MOD_REPLACE; break;
1619                 case '#':       op = LDAP_MOD_INCREMENT; break;
1620                 default:        continue;
1621                 }
1622
1623                 if ( !mod || ad != mod->sml_desc || op != mod->sml_op ) {
1624                         mod = (Modifications *) ch_malloc( sizeof( Modifications ) );
1625                         mod->sml_flags = 0;
1626                         mod->sml_op = op;
1627                         mod->sml_next = NULL;
1628                         mod->sml_desc = ad;
1629                         mod->sml_type = ad->ad_cname;
1630                         mod->sml_values = NULL;
1631                         mod->sml_nvalues = NULL;
1632                         mod->sml_numvals = 0;
1633
1634                         *modtail = mod;
1635                         modtail = &mod->sml_next;
1636                 }
1637                 if ( colon[2] == ' ' ) {
1638                         bv.bv_val = colon + 3;
1639                         bv.bv_len = vals[i].bv_len - ( bv.bv_val - vals[i].bv_val );
1640                         ber_dupbv( &bv2, &bv );
1641                         ber_bvarray_add( &mod->sml_values, &bv2 );
1642                         mod->sml_numvals++;
1643                 }
1644         }
1645         *modres = modlist;
1646         return rc;
1647 }
1648
1649 static int
1650 syncrepl_changelog_mods(
1651         syncinfo_t *si,
1652         struct berval *vals,
1653         struct Modifications **modres
1654 )
1655 {
1656         return -1;      /* FIXME */
1657 }
1658
1659 static int
1660 syncrepl_message_to_op(
1661         syncinfo_t      *si,
1662         Operation       *op,
1663         LDAPMessage     *msg
1664 )
1665 {
1666         BerElement      *ber = NULL;
1667         Modifications   *modlist = NULL;
1668         logschema *ls;
1669         SlapReply rs = { REP_RESULT };
1670         slap_callback cb = { NULL, null_callback, NULL, NULL };
1671
1672         const char      *text;
1673         char txtbuf[SLAP_TEXT_BUFLEN];
1674         size_t textlen = sizeof txtbuf;
1675
1676         struct berval   bdn, dn = BER_BVNULL, ndn;
1677         struct berval   bv, *bvals = NULL;
1678         struct berval   rdn = BER_BVNULL, sup = BER_BVNULL,
1679                 prdn = BER_BVNULL, nrdn = BER_BVNULL,
1680                 psup = BER_BVNULL, nsup = BER_BVNULL;
1681         int             rc, deleteOldRdn = 0, freeReqDn = 0;
1682         int             do_graduate = 0;
1683
1684         if ( ldap_msgtype( msg ) != LDAP_RES_SEARCH_ENTRY ) {
1685                 Debug( LDAP_DEBUG_ANY, "syncrepl_message_to_op: %s "
1686                         "Message type should be entry (%d)",
1687                         si->si_ridtxt, ldap_msgtype( msg ), 0 );
1688                 return -1;
1689         }
1690
1691         if ( si->si_syncdata == SYNCDATA_ACCESSLOG )
1692                 ls = &accesslog_sc;
1693         else
1694                 ls = &changelog_sc;
1695
1696         rc = ldap_get_dn_ber( si->si_ld, msg, &ber, &bdn );
1697
1698         if ( rc != LDAP_SUCCESS ) {
1699                 Debug( LDAP_DEBUG_ANY,
1700                         "syncrepl_message_to_op: %s dn get failed (%d)",
1701                         si->si_ridtxt, rc, 0 );
1702                 return rc;
1703         }
1704
1705         op->o_tag = LBER_DEFAULT;
1706         op->o_bd = si->si_wbe;
1707
1708         if ( BER_BVISEMPTY( &bdn ) && !BER_BVISEMPTY( &op->o_bd->be_nsuffix[0] ) ) {
1709                 Debug( LDAP_DEBUG_ANY,
1710                         "syncrepl_message_to_op: %s got empty dn",
1711                         si->si_ridtxt, 0, 0 );
1712                 return LDAP_OTHER;
1713         }
1714
1715         while (( rc = ldap_get_attribute_ber( si->si_ld, msg, ber, &bv, &bvals ) )
1716                 == LDAP_SUCCESS ) {
1717                 if ( bv.bv_val == NULL )
1718                         break;
1719
1720                 if ( !ber_bvstrcasecmp( &bv, &ls->ls_dn ) ) {
1721                         bdn = bvals[0];
1722                         rc = dnPrettyNormal( NULL, &bdn, &dn, &ndn, op->o_tmpmemctx );
1723                         if ( rc != LDAP_SUCCESS ) {
1724                                 Debug( LDAP_DEBUG_ANY,
1725                                         "syncrepl_message_to_op: %s "
1726                                         "dn \"%s\" normalization failed (%d)",
1727                                         si->si_ridtxt, bdn.bv_val, rc );
1728                                 rc = -1;
1729                                 ch_free( bvals );
1730                                 goto done;
1731                         }
1732                         ber_dupbv( &op->o_req_dn, &dn );
1733                         ber_dupbv( &op->o_req_ndn, &ndn );
1734                         slap_sl_free( ndn.bv_val, op->o_tmpmemctx );
1735                         slap_sl_free( dn.bv_val, op->o_tmpmemctx );
1736                         freeReqDn = 1;
1737                 } else if ( !ber_bvstrcasecmp( &bv, &ls->ls_req ) ) {
1738                         int i = verb_to_mask( bvals[0].bv_val, modops );
1739                         if ( i < 0 ) {
1740                                 Debug( LDAP_DEBUG_ANY,
1741                                         "syncrepl_message_to_op: %s unknown op %s",
1742                                         si->si_ridtxt, bvals[0].bv_val, 0 );
1743                                 ch_free( bvals );
1744                                 rc = -1;
1745                                 goto done;
1746                         }
1747                         op->o_tag = modops[i].mask;
1748                 } else if ( !ber_bvstrcasecmp( &bv, &ls->ls_mod ) ) {
1749                         /* Parse attribute into modlist */
1750                         if ( si->si_syncdata == SYNCDATA_ACCESSLOG ) {
1751                                 rc = syncrepl_accesslog_mods( si, bvals, &modlist );
1752                         } else {
1753                                 rc = syncrepl_changelog_mods( si, bvals, &modlist );
1754                         }
1755                         if ( rc ) goto done;
1756                 } else if ( !ber_bvstrcasecmp( &bv, &ls->ls_newRdn ) ) {
1757                         rdn = bvals[0];
1758                 } else if ( !ber_bvstrcasecmp( &bv, &ls->ls_delRdn ) ) {
1759                         if ( !ber_bvstrcasecmp( &slap_true_bv, bvals ) ) {
1760                                 deleteOldRdn = 1;
1761                         }
1762                 } else if ( !ber_bvstrcasecmp( &bv, &ls->ls_newSup ) ) {
1763                         sup = bvals[0];
1764                 } else if ( !ber_bvstrcasecmp( &bv,
1765                         &slap_schema.si_ad_entryCSN->ad_cname ) )
1766                 {
1767                         slap_queue_csn( op, bvals );
1768                         do_graduate = 1;
1769                 }
1770                 ch_free( bvals );
1771         }
1772
1773         /* If we didn't get a mod type or a target DN, bail out */
1774         if ( op->o_tag == LBER_DEFAULT || BER_BVISNULL( &dn ) ) {
1775                 rc = -1;
1776                 goto done;
1777         }
1778
1779         op->o_callback = &cb;
1780         slap_op_time( &op->o_time, &op->o_tincr );
1781
1782         switch( op->o_tag ) {
1783         case LDAP_REQ_ADD:
1784         case LDAP_REQ_MODIFY:
1785                 /* If we didn't get required data, bail */
1786                 if ( !modlist ) goto done;
1787
1788                 rc = slap_mods_check( op, modlist, &text, txtbuf, textlen, NULL );
1789
1790                 if ( rc != LDAP_SUCCESS ) {
1791                         Debug( LDAP_DEBUG_ANY, "syncrepl_message_to_op: %s "
1792                                 "mods check (%s)\n",
1793                                 si->si_ridtxt, text, 0 );
1794                         goto done;
1795                 }
1796
1797                 if ( op->o_tag == LDAP_REQ_ADD ) {
1798                         Entry *e = entry_alloc();
1799                         op->ora_e = e;
1800                         op->ora_e->e_name = op->o_req_dn;
1801                         op->ora_e->e_nname = op->o_req_ndn;
1802                         freeReqDn = 0;
1803                         rc = slap_mods2entry( modlist, &op->ora_e, 1, 0, &text, txtbuf, textlen);
1804                         if( rc != LDAP_SUCCESS ) {
1805                                 Debug( LDAP_DEBUG_ANY, "syncrepl_message_to_op: %s "
1806                                 "mods2entry (%s)\n",
1807                                         si->si_ridtxt, text, 0 );
1808                         } else {
1809                                 rc = op->o_bd->be_add( op, &rs );
1810                                 Debug( LDAP_DEBUG_SYNC,
1811                                         "syncrepl_message_to_op: %s be_add %s (%d)\n",
1812                                         si->si_ridtxt, op->o_req_dn.bv_val, rc );
1813                                 do_graduate = 0;
1814                         }
1815                         if ( e == op->ora_e )
1816                                 be_entry_release_w( op, op->ora_e );
1817                 } else {
1818                         op->orm_modlist = modlist;
1819                         op->o_bd = si->si_wbe;
1820                         rc = op->o_bd->be_modify( op, &rs );
1821                         modlist = op->orm_modlist;
1822                         Debug( rc ? LDAP_DEBUG_ANY : LDAP_DEBUG_SYNC,
1823                                 "syncrepl_message_to_op: %s be_modify %s (%d)\n",
1824                                 si->si_ridtxt, op->o_req_dn.bv_val, rc );
1825                         op->o_bd = si->si_be;
1826                         do_graduate = 0;
1827                 }
1828                 break;
1829         case LDAP_REQ_MODRDN:
1830                 if ( BER_BVISNULL( &rdn ) ) goto done;
1831
1832                 if ( rdnPretty( NULL, &rdn, &prdn, NULL ) ) {
1833                         goto done;
1834                 }
1835                 if ( rdnNormalize( 0, NULL, NULL, &rdn, &nrdn, NULL ) ) {
1836                         goto done;
1837                 }
1838                 if ( !BER_BVISNULL( &sup ) ) {
1839                         if ( dnPrettyNormal( NULL, &sup, &psup, &nsup, NULL ) ) {
1840                                 goto done;
1841                         }
1842                         op->orr_newSup = &psup;
1843                         op->orr_nnewSup = &nsup;
1844                 } else {
1845                         op->orr_newSup = NULL;
1846                         op->orr_nnewSup = NULL;
1847                 }
1848                 op->orr_newrdn = prdn;
1849                 op->orr_nnewrdn = nrdn;
1850                 op->orr_deleteoldrdn = deleteOldRdn;
1851                 op->orr_modlist = NULL;
1852                 if ( slap_modrdn2mods( op, &rs ) ) {
1853                         goto done;
1854                 }
1855
1856                 /* Append modlist for operational attrs */
1857                 {
1858                         Modifications *m;
1859
1860                         for ( m = op->orr_modlist; m->sml_next; m = m->sml_next )
1861                                 ;
1862                         m->sml_next = modlist;
1863                         modlist = NULL;
1864                 }
1865                 rc = op->o_bd->be_modrdn( op, &rs );
1866                 slap_mods_free( op->orr_modlist, 1 );
1867                 Debug( rc ? LDAP_DEBUG_ANY : LDAP_DEBUG_SYNC,
1868                         "syncrepl_message_to_op: %s be_modrdn %s (%d)\n",
1869                         si->si_ridtxt, op->o_req_dn.bv_val, rc );
1870                 do_graduate = 0;
1871                 break;
1872         case LDAP_REQ_DELETE:
1873                 rc = op->o_bd->be_delete( op, &rs );
1874                 Debug( rc ? LDAP_DEBUG_ANY : LDAP_DEBUG_SYNC,
1875                         "syncrepl_message_to_op: %s be_delete %s (%d)\n",
1876                         si->si_ridtxt, op->o_req_dn.bv_val, rc );
1877                 do_graduate = 0;
1878                 break;
1879         }
1880 done:
1881         if ( do_graduate )
1882                 slap_graduate_commit_csn( op );
1883         op->o_bd = si->si_be;
1884         op->o_tmpfree( op->o_csn.bv_val, op->o_tmpmemctx );
1885         BER_BVZERO( &op->o_csn );
1886         if ( modlist ) {
1887                 slap_mods_free( modlist, op->o_tag != LDAP_REQ_ADD );
1888         }
1889         if ( !BER_BVISNULL( &rdn ) ) {
1890                 if ( !BER_BVISNULL( &nsup ) ) {
1891                         ch_free( nsup.bv_val );
1892                 }
1893                 if ( !BER_BVISNULL( &psup ) ) {
1894                         ch_free( psup.bv_val );
1895                 }
1896                 if ( !BER_BVISNULL( &nrdn ) ) {
1897                         ch_free( nrdn.bv_val );
1898                 }
1899                 if ( !BER_BVISNULL( &prdn ) ) {
1900                         ch_free( prdn.bv_val );
1901                 }
1902         }
1903         if ( freeReqDn ) {
1904                 ch_free( op->o_req_ndn.bv_val );
1905                 ch_free( op->o_req_dn.bv_val );
1906         }
1907         ber_free( ber, 0 );
1908         return rc;
1909 }
1910
1911 static int
1912 syncrepl_message_to_entry(
1913         syncinfo_t      *si,
1914         Operation       *op,
1915         LDAPMessage     *msg,
1916         Modifications   **modlist,
1917         Entry                   **entry,
1918         int             syncstate
1919 )
1920 {
1921         Entry           *e = NULL;
1922         BerElement      *ber = NULL;
1923         Modifications   tmp;
1924         Modifications   *mod;
1925         Modifications   **modtail = modlist;
1926
1927         const char      *text;
1928         char txtbuf[SLAP_TEXT_BUFLEN];
1929         size_t textlen = sizeof txtbuf;
1930
1931         struct berval   bdn = BER_BVNULL, dn, ndn;
1932         int             rc, is_ctx;
1933
1934         *modlist = NULL;
1935
1936         if ( ldap_msgtype( msg ) != LDAP_RES_SEARCH_ENTRY ) {
1937                 Debug( LDAP_DEBUG_ANY, "syncrepl_message_to_entry: %s "
1938                         "Message type should be entry (%d)",
1939                         si->si_ridtxt, ldap_msgtype( msg ), 0 );
1940                 return -1;
1941         }
1942
1943         op->o_tag = LDAP_REQ_ADD;
1944
1945         rc = ldap_get_dn_ber( si->si_ld, msg, &ber, &bdn );
1946         if ( rc != LDAP_SUCCESS ) {
1947                 Debug( LDAP_DEBUG_ANY,
1948                         "syncrepl_message_to_entry: %s dn get failed (%d)",
1949                         si->si_ridtxt, rc, 0 );
1950                 return rc;
1951         }
1952
1953         if ( BER_BVISEMPTY( &bdn ) && !BER_BVISEMPTY( &op->o_bd->be_nsuffix[0] ) ) {
1954                 Debug( LDAP_DEBUG_ANY,
1955                         "syncrepl_message_to_entry: %s got empty dn",
1956                         si->si_ridtxt, 0, 0 );
1957                 return LDAP_OTHER;
1958         }
1959
1960         if ( syncstate == LDAP_SYNC_PRESENT || syncstate == LDAP_SYNC_DELETE ) {
1961                 /* NOTE: this could be done even before decoding the DN,
1962                  * although encoding errors wouldn't be detected */
1963                 rc = LDAP_SUCCESS;
1964                 goto done;
1965         }
1966
1967         if ( entry == NULL ) {
1968                 return -1;
1969         }
1970
1971         rc = dnPrettyNormal( NULL, &bdn, &dn, &ndn, op->o_tmpmemctx );
1972         if ( rc != LDAP_SUCCESS ) {
1973                 /* One of the things that could happen is that the schema
1974                  * is not lined-up; this could result in unknown attributes.
1975                  * A value non conformant to the syntax should be unlikely,
1976                  * except when replicating between different versions
1977                  * of the software, or when syntax validation bugs are fixed
1978                  */
1979                 Debug( LDAP_DEBUG_ANY,
1980                         "syncrepl_message_to_entry: "
1981                         "%s dn \"%s\" normalization failed (%d)",
1982                         si->si_ridtxt, bdn.bv_val, rc );
1983                 return rc;
1984         }
1985
1986         ber_dupbv( &op->o_req_dn, &dn );
1987         ber_dupbv( &op->o_req_ndn, &ndn );
1988         slap_sl_free( ndn.bv_val, op->o_tmpmemctx );
1989         slap_sl_free( dn.bv_val, op->o_tmpmemctx );
1990
1991         is_ctx = dn_match( &op->o_req_ndn, &op->o_bd->be_nsuffix[0] );
1992
1993         e = entry_alloc();
1994         e->e_name = op->o_req_dn;
1995         e->e_nname = op->o_req_ndn;
1996
1997         while ( ber_remaining( ber ) ) {
1998                 if ( (ber_scanf( ber, "{mW}", &tmp.sml_type, &tmp.sml_values ) ==
1999                         LBER_ERROR ) || BER_BVISNULL( &tmp.sml_type ) )
2000                 {
2001                         break;
2002                 }
2003
2004                 /* Drop all updates to the contextCSN of the context entry
2005                  * (ITS#4622, etc.)
2006                  */
2007                 if ( is_ctx && !strcasecmp( tmp.sml_type.bv_val,
2008                         slap_schema.si_ad_contextCSN->ad_cname.bv_val )) {
2009                         ber_bvarray_free( tmp.sml_values );
2010                         continue;
2011                 }
2012
2013                 mod  = (Modifications *) ch_malloc( sizeof( Modifications ) );
2014
2015                 mod->sml_op = LDAP_MOD_REPLACE;
2016                 mod->sml_flags = 0;
2017                 mod->sml_next = NULL;
2018                 mod->sml_desc = NULL;
2019                 mod->sml_type = tmp.sml_type;
2020                 mod->sml_values = tmp.sml_values;
2021                 mod->sml_nvalues = NULL;
2022                 mod->sml_numvals = 0;   /* slap_mods_check will set this */
2023
2024                 *modtail = mod;
2025                 modtail = &mod->sml_next;
2026         }
2027
2028         if ( *modlist == NULL ) {
2029                 Debug( LDAP_DEBUG_ANY, "syncrepl_message_to_entry: %s no attributes\n",
2030                         si->si_ridtxt, 0, 0 );
2031                 rc = -1;
2032                 goto done;
2033         }
2034
2035         rc = slap_mods_check( op, *modlist, &text, txtbuf, textlen, NULL );
2036
2037         if ( rc != LDAP_SUCCESS ) {
2038                 Debug( LDAP_DEBUG_ANY, "syncrepl_message_to_entry: %s mods check (%s)\n",
2039                         si->si_ridtxt, text, 0 );
2040                 goto done;
2041         }
2042
2043         /* Strip out dynamically generated attrs */
2044         for ( modtail = modlist; *modtail ; ) {
2045                 mod = *modtail;
2046                 if ( mod->sml_desc->ad_type->sat_flags & SLAP_AT_DYNAMIC ) {
2047                         *modtail = mod->sml_next;
2048                         slap_mod_free( &mod->sml_mod, 0 );
2049                         ch_free( mod );
2050                 } else {
2051                         modtail = &mod->sml_next;
2052                 }
2053         }
2054
2055         /* Strip out attrs in exattrs list */
2056         for ( modtail = modlist; *modtail ; ) {
2057                 mod = *modtail;
2058                 if ( ldap_charray_inlist( si->si_exattrs,
2059                         mod->sml_desc->ad_type->sat_cname.bv_val ) )
2060                 {
2061                         *modtail = mod->sml_next;
2062                         slap_mod_free( &mod->sml_mod, 0 );
2063                         ch_free( mod );
2064                 } else {
2065                         modtail = &mod->sml_next;
2066                 }
2067         }
2068
2069         rc = slap_mods2entry( *modlist, &e, 1, 1, &text, txtbuf, textlen);
2070         if( rc != LDAP_SUCCESS ) {
2071                 Debug( LDAP_DEBUG_ANY, "syncrepl_message_to_entry: %s mods2entry (%s)\n",
2072                         si->si_ridtxt, text, 0 );
2073         }
2074
2075 done:
2076         ber_free( ber, 0 );
2077         if ( rc != LDAP_SUCCESS ) {
2078                 if ( e ) {
2079                         entry_free( e );
2080                         e = NULL;
2081                 }
2082         }
2083         if ( entry )
2084                 *entry = e;
2085
2086         return rc;
2087 }
2088
2089 static struct berval generic_filterstr = BER_BVC("(objectclass=*)");
2090
2091 /* During a refresh, we may get an LDAP_SYNC_ADD for an already existing
2092  * entry if a previous refresh was interrupted before sending us a new
2093  * context state. We try to compare the new entry to the existing entry
2094  * and ignore the new entry if they are the same.
2095  *
2096  * Also, we may get an update where the entryDN has changed, due to
2097  * a ModDn on the provider. We detect this as well, so we can issue
2098  * the corresponding operation locally.
2099  *
2100  * In the case of a modify, we get a list of all the attributes
2101  * in the original entry. Rather than deleting the entry and re-adding it,
2102  * we issue a Modify request that deletes all the attributes and adds all
2103  * the new ones. This avoids the issue of trying to delete/add a non-leaf
2104  * entry.
2105  *
2106  * We otherwise distinguish ModDN from Modify; in the case of
2107  * a ModDN we just use the CSN, modifyTimestamp and modifiersName
2108  * operational attributes from the entry, and do a regular ModDN.
2109  */
2110 typedef struct dninfo {
2111         Entry *new_entry;
2112         struct berval dn;
2113         struct berval ndn;
2114         struct berval nnewSup;
2115         int renamed;    /* Was an existing entry renamed? */
2116         int delOldRDN;  /* Was old RDN deleted? */
2117         Modifications **modlist;        /* the modlist we received */
2118         Modifications *mods;    /* the modlist we compared */
2119         Attribute *oldNattr;    /* old naming attr */
2120         AttributeDescription *oldDesc;  /* for renames */
2121         AttributeDescription *newDesc;  /* for renames */
2122 } dninfo;
2123
2124 /* return 1 if inserted, 0 otherwise */
2125 static int
2126 avl_presentlist_insert(
2127         syncinfo_t* si,
2128         struct berval *syncUUID )
2129 {
2130         struct berval *syncuuid_bv = ch_malloc( sizeof( struct berval ) + syncUUID->bv_len + 1 );
2131
2132         syncuuid_bv->bv_len = syncUUID->bv_len;
2133         syncuuid_bv->bv_val = (char *)&syncuuid_bv[1];
2134         AC_MEMCPY( syncuuid_bv->bv_val, syncUUID->bv_val, syncUUID->bv_len );
2135         syncuuid_bv->bv_val[ syncuuid_bv->bv_len ] = '\0';
2136
2137         if ( avl_insert( &si->si_presentlist, (caddr_t) syncuuid_bv,
2138                 syncuuid_cmp, avl_dup_error ) )
2139         {
2140                 ch_free( syncuuid_bv );
2141                 return 0;
2142         }
2143
2144         return 1;
2145 }
2146
2147 static int
2148 syncrepl_entry(
2149         syncinfo_t* si,
2150         Operation *op,
2151         Entry* entry,
2152         Modifications** modlist,
2153         int syncstate,
2154         struct berval* syncUUID,
2155         struct berval* syncCSN )
2156 {
2157         Backend *be = op->o_bd;
2158         slap_callback   cb = { NULL, NULL, NULL, NULL };
2159         int syncuuid_inserted = 0;
2160         struct berval   syncUUID_strrep = BER_BVNULL;
2161
2162         SlapReply       rs_search = {REP_RESULT};
2163         SlapReply       rs_delete = {REP_RESULT};
2164         SlapReply       rs_add = {REP_RESULT};
2165         SlapReply       rs_modify = {REP_RESULT};
2166         Filter f = {0};
2167         AttributeAssertion ava = ATTRIBUTEASSERTION_INIT;
2168         int rc = LDAP_SUCCESS;
2169
2170         struct berval pdn = BER_BVNULL;
2171         dninfo dni = {0};
2172         int     retry = 1;
2173         int     freecsn = 1;
2174
2175         Debug( LDAP_DEBUG_SYNC,
2176                 "syncrepl_entry: %s LDAP_RES_SEARCH_ENTRY(LDAP_SYNC_%s)\n",
2177                 si->si_ridtxt, syncrepl_state2str( syncstate ), 0 );
2178
2179         if (( syncstate == LDAP_SYNC_PRESENT || syncstate == LDAP_SYNC_ADD ) ) {
2180                 if ( !si->si_refreshPresent && !si->si_refreshDone ) {
2181                         syncuuid_inserted = avl_presentlist_insert( si, syncUUID );
2182                 }
2183         }
2184
2185         if ( syncstate == LDAP_SYNC_PRESENT ) {
2186                 return 0;
2187         } else if ( syncstate != LDAP_SYNC_DELETE ) {
2188                 if ( entry == NULL ) {
2189                         return 0;
2190                 }
2191         }
2192
2193         (void)slap_uuidstr_from_normalized( &syncUUID_strrep, syncUUID, op->o_tmpmemctx );
2194         if ( syncstate != LDAP_SYNC_DELETE ) {
2195                 Attribute       *a = attr_find( entry->e_attrs, slap_schema.si_ad_entryUUID );
2196
2197                 if ( a == NULL ) {
2198                         /* add if missing */
2199                         attr_merge_one( entry, slap_schema.si_ad_entryUUID,
2200                                 &syncUUID_strrep, syncUUID );
2201
2202                 } else if ( !bvmatch( &a->a_nvals[0], syncUUID ) ) {
2203                         /* replace only if necessary */
2204                         if ( a->a_nvals != a->a_vals ) {
2205                                 ber_memfree( a->a_nvals[0].bv_val );
2206                                 ber_dupbv( &a->a_nvals[0], syncUUID );
2207                         }
2208                         ber_memfree( a->a_vals[0].bv_val );
2209                         ber_dupbv( &a->a_vals[0], &syncUUID_strrep );
2210                 }
2211         }
2212
2213         f.f_choice = LDAP_FILTER_EQUALITY;
2214         f.f_ava = &ava;
2215         ava.aa_desc = slap_schema.si_ad_entryUUID;
2216         ava.aa_value = *syncUUID;
2217
2218         if ( syncuuid_inserted ) {
2219                 Debug( LDAP_DEBUG_SYNC, "syncrepl_entry: %s inserted UUID %s\n",
2220                         si->si_ridtxt, syncUUID_strrep.bv_val, 0 );
2221         }
2222         op->ors_filter = &f;
2223
2224         op->ors_filterstr.bv_len = STRLENOF( "(entryUUID=)" ) + syncUUID_strrep.bv_len;
2225         op->ors_filterstr.bv_val = (char *) slap_sl_malloc(
2226                 op->ors_filterstr.bv_len + 1, op->o_tmpmemctx );
2227         AC_MEMCPY( op->ors_filterstr.bv_val, "(entryUUID=", STRLENOF( "(entryUUID=" ) );
2228         AC_MEMCPY( &op->ors_filterstr.bv_val[STRLENOF( "(entryUUID=" )],
2229                 syncUUID_strrep.bv_val, syncUUID_strrep.bv_len );
2230         op->ors_filterstr.bv_val[op->ors_filterstr.bv_len - 1] = ')';
2231         op->ors_filterstr.bv_val[op->ors_filterstr.bv_len] = '\0';
2232
2233         op->o_tag = LDAP_REQ_SEARCH;
2234         op->ors_scope = LDAP_SCOPE_SUBTREE;
2235         op->ors_deref = LDAP_DEREF_NEVER;
2236
2237         /* get the entry for this UUID */
2238         op->o_req_dn = si->si_base;
2239         op->o_req_ndn = si->si_base;
2240
2241         op->o_time = slap_get_time();
2242         op->ors_tlimit = SLAP_NO_LIMIT;
2243         op->ors_slimit = 1;
2244         op->ors_limit = NULL;
2245
2246         op->ors_attrs = slap_anlist_all_attributes;
2247         op->ors_attrsonly = 0;
2248
2249         /* set callback function */
2250         op->o_callback = &cb;
2251         cb.sc_response = dn_callback;
2252         cb.sc_private = &dni;
2253         dni.new_entry = entry;
2254         dni.modlist = modlist;
2255
2256         rc = be->be_search( op, &rs_search );
2257         Debug( LDAP_DEBUG_SYNC,
2258                         "syncrepl_entry: %s be_search (%d)\n",
2259                         si->si_ridtxt, rc, 0 );
2260
2261         if ( !BER_BVISNULL( &op->ors_filterstr ) ) {
2262                 slap_sl_free( op->ors_filterstr.bv_val, op->o_tmpmemctx );
2263         }
2264
2265         cb.sc_response = null_callback;
2266         cb.sc_private = si;
2267
2268         if ( entry && !BER_BVISNULL( &entry->e_name ) ) {
2269                 Debug( LDAP_DEBUG_SYNC,
2270                                 "syncrepl_entry: %s %s\n",
2271                                 si->si_ridtxt, entry->e_name.bv_val, 0 );
2272         } else {
2273                 Debug( LDAP_DEBUG_SYNC,
2274                                 "syncrepl_entry: %s %s\n",
2275                                 si->si_ridtxt, dni.dn.bv_val ? dni.dn.bv_val : "(null)", 0 );
2276         }
2277
2278         assert( BER_BVISNULL( &op->o_csn ) );
2279         if ( syncCSN ) {
2280                 slap_queue_csn( op, syncCSN );
2281         }
2282
2283         slap_op_time( &op->o_time, &op->o_tincr );
2284         switch ( syncstate ) {
2285         case LDAP_SYNC_ADD:
2286         case LDAP_SYNC_MODIFY:
2287                 if ( BER_BVISNULL( &op->o_csn ))
2288                 {
2289
2290                         Attribute *a = attr_find( entry->e_attrs, slap_schema.si_ad_entryCSN );
2291                         if ( a ) {
2292                                 /* FIXME: op->o_csn is assumed to be
2293                                  * on the thread's slab; this needs
2294                                  * to be cleared ASAP.
2295                                  * What happens if already present?
2296                                  */
2297                                 assert( BER_BVISNULL( &op->o_csn ) );
2298                                 op->o_csn = a->a_vals[0];
2299                                 freecsn = 0;
2300                         }
2301                 }
2302 retry_add:;
2303                 if ( BER_BVISNULL( &dni.dn ) ) {
2304
2305                         op->o_req_dn = entry->e_name;
2306                         op->o_req_ndn = entry->e_nname;
2307                         op->o_tag = LDAP_REQ_ADD;
2308                         op->ora_e = entry;
2309                         op->o_bd = si->si_wbe;
2310
2311                         rc = op->o_bd->be_add( op, &rs_add );
2312                         Debug( LDAP_DEBUG_SYNC,
2313                                         "syncrepl_entry: %s be_add %s (%d)\n",
2314                                         si->si_ridtxt, op->o_req_dn.bv_val, rc );
2315                         switch ( rs_add.sr_err ) {
2316                         case LDAP_SUCCESS:
2317                                 if ( op->ora_e == entry ) {
2318                                         be_entry_release_w( op, entry );
2319                                 }
2320                                 entry = NULL;
2321                                 break;
2322
2323                         case LDAP_REFERRAL:
2324                         /* we assume that LDAP_NO_SUCH_OBJECT is returned
2325                          * only if the suffix entry is not present */
2326                         case LDAP_NO_SUCH_OBJECT:
2327                                 rc = syncrepl_add_glue( op, entry );
2328                                 entry = NULL;
2329                                 break;
2330
2331                         /* if an entry was added via syncrepl_add_glue(),
2332                          * it likely has no entryUUID, so the previous
2333                          * be_search() doesn't find it.  In this case,
2334                          * give syncrepl a chance to modify it. Also
2335                          * allow for entries that were recreated with the
2336                          * same DN but a different entryUUID.
2337                          */
2338                         case LDAP_ALREADY_EXISTS:
2339                                 if ( retry ) {
2340                                         Operation       op2 = *op;
2341                                         SlapReply       rs2 = { 0 };
2342                                         slap_callback   cb2 = { 0 };
2343
2344                                         op2.o_bd = be;
2345                                         op2.o_tag = LDAP_REQ_SEARCH;
2346                                         op2.o_req_dn = entry->e_name;
2347                                         op2.o_req_ndn = entry->e_nname;
2348                                         op2.ors_scope = LDAP_SCOPE_BASE;
2349                                         op2.ors_deref = LDAP_DEREF_NEVER;
2350                                         op2.ors_attrs = slap_anlist_all_attributes;
2351                                         op2.ors_attrsonly = 0;
2352                                         op2.ors_limit = NULL;
2353                                         op2.ors_slimit = 1;
2354                                         op2.ors_tlimit = SLAP_NO_LIMIT;
2355
2356                                         f.f_choice = LDAP_FILTER_PRESENT;
2357                                         f.f_desc = slap_schema.si_ad_objectClass;
2358                                         op2.ors_filter = &f;
2359                                         op2.ors_filterstr = generic_filterstr;
2360
2361                                         op2.o_callback = &cb2;
2362                                         cb2.sc_response = dn_callback;
2363                                         cb2.sc_private = &dni;
2364
2365                                         rc = be->be_search( &op2, &rs2 );
2366                                         if ( rc ) goto done;
2367
2368                                         retry = 0;
2369                                         slap_op_time( &op->o_time, &op->o_tincr );
2370                                         goto retry_add;
2371                                 }
2372                                 /* FALLTHRU */
2373
2374                         default:
2375                                 Debug( LDAP_DEBUG_ANY,
2376                                         "syncrepl_entry: %s be_add %s failed (%d)\n",
2377                                         si->si_ridtxt, op->o_req_dn.bv_val, rs_add.sr_err );
2378                                 break;
2379                         }
2380                         syncCSN = NULL;
2381                         op->o_bd = be;
2382                         goto done;
2383                 }
2384                 /* FALLTHRU */
2385                 op->o_req_dn = dni.dn;
2386                 op->o_req_ndn = dni.ndn;
2387                 if ( dni.renamed ) {
2388                         struct berval noldp, newp;
2389                         Modifications *mod, **modtail, **ml, *m2;
2390                         int i, got_replace = 0, just_rename = 0;
2391
2392                         op->o_tag = LDAP_REQ_MODRDN;
2393                         dnRdn( &entry->e_name, &op->orr_newrdn );
2394                         dnRdn( &entry->e_nname, &op->orr_nnewrdn );
2395
2396                         if ( !BER_BVISNULL( &dni.nnewSup )) {
2397                                 dnParent( &entry->e_name, &newp );
2398                                 op->orr_newSup = &newp;
2399                                 op->orr_nnewSup = &dni.nnewSup;
2400                         } else {
2401                                 op->orr_newSup = NULL;
2402                                 op->orr_nnewSup = NULL;
2403                         }
2404                         op->orr_deleteoldrdn = dni.delOldRDN;
2405                         op->orr_modlist = NULL;
2406                         if ( ( rc = slap_modrdn2mods( op, &rs_modify ) ) ) {
2407                                 goto done;
2408                         }
2409
2410                         /* Drop the RDN-related mods from this op, because their
2411                          * equivalents were just setup by slap_modrdn2mods.
2412                          *
2413                          * If delOldRDN is TRUE then we should see a delete modop
2414                          * for oldDesc. We might see a replace instead.
2415                          *  delete with no values: therefore newDesc != oldDesc.
2416                          *   if oldNattr had only one value, then Drop this op.
2417                          *  delete with 1 value: can only be the oldRDN value. Drop op.
2418                          *  delete with N values: Drop oldRDN value, keep remainder.
2419                          *  replace with 1 value: if oldNattr had only one value and
2420                          *     newDesc == oldDesc, Drop this op.
2421                          * Any other cases must be left intact.
2422                          *
2423                          * We should also see an add modop for newDesc. (But not if
2424                          * we got a replace modop due to delOldRDN.) If it has
2425                          * multiple values, we'll have to drop the new RDN value.
2426                          */
2427                         modtail = &op->orr_modlist;
2428                         if ( dni.delOldRDN ) {
2429                                 for ( ml = &dni.mods; *ml; ml = &(*ml)->sml_next ) {
2430                                         if ( (*ml)->sml_desc == dni.oldDesc ) {
2431                                                 mod = *ml;
2432                                                 if ( mod->sml_op == LDAP_MOD_REPLACE &&
2433                                                         dni.oldDesc != dni.newDesc ) {
2434                                                         /* This Replace is due to other Mods.
2435                                                          * Just let it ride.
2436                                                          */
2437                                                         continue;
2438                                                 }
2439                                                 if ( mod->sml_numvals <= 1 &&
2440                                                         dni.oldNattr->a_numvals == 1 &&
2441                                                         ( mod->sml_op == LDAP_MOD_DELETE ||
2442                                                           mod->sml_op == LDAP_MOD_REPLACE )) {
2443                                                         if ( mod->sml_op == LDAP_MOD_REPLACE )
2444                                                                 got_replace = 1;
2445                                                         /* Drop this op */
2446                                                         *ml = mod->sml_next;
2447                                                         mod->sml_next = NULL;
2448                                                         slap_mods_free( mod, 1 );
2449                                                         break;
2450                                                 }
2451                                                 if ( mod->sml_op != LDAP_MOD_DELETE || mod->sml_numvals == 0 )
2452                                                         continue;
2453                                                 for ( m2 = op->orr_modlist; m2; m2=m2->sml_next ) {
2454                                                         if ( m2->sml_desc == dni.oldDesc &&
2455                                                                 m2->sml_op == LDAP_MOD_DELETE ) break;
2456                                                 }
2457                                                 for ( i=0; i<mod->sml_numvals; i++ ) {
2458                                                         if ( bvmatch( &mod->sml_values[i], &m2->sml_values[0] )) {
2459                                                                 mod->sml_numvals--;
2460                                                                 ch_free( mod->sml_values[i].bv_val );
2461                                                                 mod->sml_values[i] = mod->sml_values[mod->sml_numvals];
2462                                                                 BER_BVZERO( &mod->sml_values[mod->sml_numvals] );
2463                                                                 if ( mod->sml_nvalues ) {
2464                                                                         ch_free( mod->sml_nvalues[i].bv_val );
2465                                                                         mod->sml_nvalues[i] = mod->sml_nvalues[mod->sml_numvals];
2466                                                                         BER_BVZERO( &mod->sml_nvalues[mod->sml_numvals] );
2467                                                                 }
2468                                                                 break;
2469                                                         }
2470                                                 }
2471                                                 if ( !mod->sml_numvals ) {
2472                                                         /* Drop this op */
2473                                                         *ml = mod->sml_next;
2474                                                         mod->sml_next = NULL;
2475                                                         slap_mods_free( mod, 1 );
2476                                                 }
2477                                                 break;
2478                                         }
2479                                 }
2480                         }
2481                         if ( !got_replace ) {
2482                                 for ( ml = &dni.mods; *ml; ml = &(*ml)->sml_next ) {
2483                                         if ( (*ml)->sml_desc == dni.newDesc ) {
2484                                                 mod = *ml;
2485                                                 if ( mod->sml_op != LDAP_MOD_ADD )
2486                                                         continue;
2487                                                 if ( mod->sml_numvals == 1 ) {
2488                                                         /* Drop this op */
2489                                                         *ml = mod->sml_next;
2490                                                         mod->sml_next = NULL;
2491                                                         slap_mods_free( mod, 1 );
2492                                                         break;
2493                                                 }
2494                                                 for ( m2 = op->orr_modlist; m2; m2=m2->sml_next ) {
2495                                                         if ( m2->sml_desc == dni.oldDesc &&
2496                                                                 m2->sml_op == SLAP_MOD_SOFTADD ) break;
2497                                                 }
2498                                                 for ( i=0; i<mod->sml_numvals; i++ ) {
2499                                                         if ( bvmatch( &mod->sml_values[i], &m2->sml_values[0] )) {
2500                                                                 mod->sml_numvals--;
2501                                                                 ch_free( mod->sml_values[i].bv_val );
2502                                                                 mod->sml_values[i] = mod->sml_values[mod->sml_numvals];
2503                                                                 BER_BVZERO( &mod->sml_values[mod->sml_numvals] );
2504                                                                 if ( mod->sml_nvalues ) {
2505                                                                         ch_free( mod->sml_nvalues[i].bv_val );
2506                                                                         mod->sml_nvalues[i] = mod->sml_nvalues[mod->sml_numvals];
2507                                                                         BER_BVZERO( &mod->sml_nvalues[mod->sml_numvals] );
2508                                                                 }
2509                                                                 break;
2510                                                         }
2511                                                 }
2512                                                 break;
2513                                         }
2514                                 }
2515                         }
2516
2517                         /* RDNs must be NUL-terminated for back-ldap */
2518                         noldp = op->orr_newrdn;
2519                         ber_dupbv_x( &op->orr_newrdn, &noldp, op->o_tmpmemctx );
2520                         noldp = op->orr_nnewrdn;
2521                         ber_dupbv_x( &op->orr_nnewrdn, &noldp, op->o_tmpmemctx );
2522
2523                         /* Setup opattrs too */
2524                         {
2525                                 static AttributeDescription *nullattr = NULL;
2526                                 static AttributeDescription **const opattrs[] = {
2527                                         &slap_schema.si_ad_entryCSN,
2528                                         &slap_schema.si_ad_modifiersName,
2529                                         &slap_schema.si_ad_modifyTimestamp,
2530                                         &nullattr
2531                                 };
2532                                 AttributeDescription *opattr;
2533                                 int i;
2534
2535                                 modtail = &m2;
2536                                 /* pull mod off incoming modlist */
2537                                 for ( i = 0; (opattr = *opattrs[i]) != NULL; i++ ) {
2538                                         for ( ml = &dni.mods; *ml; ml = &(*ml)->sml_next )
2539                                         {
2540                                                 if ( (*ml)->sml_desc == opattr ) {
2541                                                         mod = *ml;
2542                                                         *ml = mod->sml_next;
2543                                                         mod->sml_next = NULL;
2544                                                         *modtail = mod;
2545                                                         modtail = &mod->sml_next;
2546                                                         break;
2547                                                 }
2548                                         }
2549                                 }
2550                                 /* If there are still Modifications left, put the opattrs
2551                                  * back, and let be_modify run. Otherwise, append the opattrs
2552                                  * to the orr_modlist.
2553                                  */
2554                                 if ( dni.mods ) {
2555                                         mod = dni.mods;
2556                                         /* don't set a CSN for the rename op */
2557                                         if ( syncCSN )
2558                                                 slap_graduate_commit_csn( op );
2559                                 } else {
2560                                         mod = op->orr_modlist;
2561                                         just_rename = 1;
2562                                 }
2563                                 for ( ; mod->sml_next; mod=mod->sml_next );
2564                                 mod->sml_next = m2;
2565                         }
2566                         op->o_bd = si->si_wbe;
2567 retry_modrdn:;
2568                         rc = op->o_bd->be_modrdn( op, &rs_modify );
2569
2570                         /* NOTE: noSuchObject should result because the new superior
2571                          * has not been added yet (ITS#6472) */
2572                         if ( rc == LDAP_NO_SUCH_OBJECT && !BER_BVISNULL( op->orr_nnewSup )) {
2573                                 Operation op2 = *op;
2574                                 rc = syncrepl_add_glue_ancestors( &op2, entry );
2575                                 if ( rc == LDAP_SUCCESS ) {
2576                                         goto retry_modrdn;
2577                                 }
2578                         }
2579
2580                         op->o_tmpfree( op->orr_nnewrdn.bv_val, op->o_tmpmemctx );
2581                         op->o_tmpfree( op->orr_newrdn.bv_val, op->o_tmpmemctx );
2582
2583                         slap_mods_free( op->orr_modlist, 1 );
2584                         Debug( LDAP_DEBUG_SYNC,
2585                                         "syncrepl_entry: %s be_modrdn %s (%d)\n",
2586                                         si->si_ridtxt, op->o_req_dn.bv_val, rc );
2587                         op->o_bd = be;
2588                         /* Renamed entries may still have other mods so just fallthru */
2589                         op->o_req_dn = entry->e_name;
2590                         op->o_req_ndn = entry->e_nname;
2591                         /* Use CSN on the modify */
2592                         if ( just_rename )
2593                                 syncCSN = NULL;
2594                         else if ( syncCSN )
2595                                 slap_queue_csn( op, syncCSN );
2596                 }
2597                 if ( dni.mods ) {
2598                         op->o_tag = LDAP_REQ_MODIFY;
2599                         op->orm_modlist = dni.mods;
2600                         op->orm_no_opattrs = 1;
2601                         op->o_bd = si->si_wbe;
2602
2603                         rc = op->o_bd->be_modify( op, &rs_modify );
2604                         slap_mods_free( op->orm_modlist, 1 );
2605                         op->orm_no_opattrs = 0;
2606                         Debug( LDAP_DEBUG_SYNC,
2607                                         "syncrepl_entry: %s be_modify %s (%d)\n",
2608                                         si->si_ridtxt, op->o_req_dn.bv_val, rc );
2609                         if ( rs_modify.sr_err != LDAP_SUCCESS ) {
2610                                 Debug( LDAP_DEBUG_ANY,
2611                                         "syncrepl_entry: %s be_modify failed (%d)\n",
2612                                         si->si_ridtxt, rs_modify.sr_err, 0 );
2613                         }
2614                         syncCSN = NULL;
2615                         op->o_bd = be;
2616                 } else if ( !dni.renamed ) {
2617                         Debug( LDAP_DEBUG_SYNC,
2618                                         "syncrepl_entry: %s entry unchanged, ignored (%s)\n",
2619                                         si->si_ridtxt, op->o_req_dn.bv_val, 0 );
2620                         if ( syncCSN ) {
2621                                 slap_graduate_commit_csn( op );
2622                                 syncCSN = NULL;
2623                         }
2624                 }
2625                 goto done;
2626         case LDAP_SYNC_DELETE :
2627                 if ( !BER_BVISNULL( &dni.dn ) ) {
2628                         op->o_req_dn = dni.dn;
2629                         op->o_req_ndn = dni.ndn;
2630                         op->o_tag = LDAP_REQ_DELETE;
2631                         op->o_bd = si->si_wbe;
2632                         rc = op->o_bd->be_delete( op, &rs_delete );
2633                         Debug( LDAP_DEBUG_SYNC,
2634                                         "syncrepl_entry: %s be_delete %s (%d)\n",
2635                                         si->si_ridtxt, op->o_req_dn.bv_val, rc );
2636
2637                         while ( rs_delete.sr_err == LDAP_SUCCESS
2638                                 && op->o_delete_glue_parent ) {
2639                                 op->o_delete_glue_parent = 0;
2640                                 if ( !be_issuffix( be, &op->o_req_ndn ) ) {
2641                                         slap_callback cb = { NULL };
2642                                         cb.sc_response = slap_null_cb;
2643                                         dnParent( &op->o_req_ndn, &pdn );
2644                                         op->o_req_dn = pdn;
2645                                         op->o_req_ndn = pdn;
2646                                         op->o_callback = &cb;
2647                                         op->o_bd->be_delete( op, &rs_delete );
2648                                 } else {
2649                                         break;
2650                                 }
2651                         }
2652                         syncCSN = NULL;
2653                         op->o_bd = be;
2654                 }
2655                 goto done;
2656
2657         default :
2658                 Debug( LDAP_DEBUG_ANY,
2659                         "syncrepl_entry: %s unknown syncstate\n", si->si_ridtxt, 0, 0 );
2660                 goto done;
2661         }
2662
2663 done:
2664         if ( !BER_BVISNULL( &syncUUID_strrep ) ) {
2665                 slap_sl_free( syncUUID_strrep.bv_val, op->o_tmpmemctx );
2666                 BER_BVZERO( &syncUUID_strrep );
2667         }
2668         if ( !BER_BVISNULL( &dni.ndn ) ) {
2669                 op->o_tmpfree( dni.ndn.bv_val, op->o_tmpmemctx );
2670         }
2671         if ( !BER_BVISNULL( &dni.dn ) ) {
2672                 op->o_tmpfree( dni.dn.bv_val, op->o_tmpmemctx );
2673         }
2674         if ( entry ) {
2675                 entry_free( entry );
2676         }
2677         if ( syncCSN ) {
2678                 slap_graduate_commit_csn( op );
2679         }
2680         if ( !BER_BVISNULL( &op->o_csn ) && freecsn ) {
2681                 op->o_tmpfree( op->o_csn.bv_val, op->o_tmpmemctx );
2682         }
2683         BER_BVZERO( &op->o_csn );
2684         return rc;
2685 }
2686
2687 static struct berval gcbva[] = {
2688         BER_BVC("top"),
2689         BER_BVC("glue"),
2690         BER_BVNULL
2691 };
2692
2693 #define NP_DELETE_ONE   2
2694
2695 static void
2696 syncrepl_del_nonpresent(
2697         Operation *op,
2698         syncinfo_t *si,
2699         BerVarray uuids,
2700         struct sync_cookie *sc,
2701         int m )
2702 {
2703         Backend* be = op->o_bd;
2704         slap_callback   cb = { NULL };
2705         SlapReply       rs_search = {REP_RESULT};
2706         SlapReply       rs_delete = {REP_RESULT};
2707         SlapReply       rs_modify = {REP_RESULT};
2708         struct nonpresent_entry *np_list, *np_prev;
2709         int rc;
2710         AttributeName   an[2];
2711
2712         struct berval pdn = BER_BVNULL;
2713         struct berval csn;
2714
2715         op->o_req_dn = si->si_base;
2716         op->o_req_ndn = si->si_base;
2717
2718         cb.sc_response = nonpresent_callback;
2719         cb.sc_private = si;
2720
2721         op->o_callback = &cb;
2722         op->o_tag = LDAP_REQ_SEARCH;
2723         op->ors_scope = si->si_scope;
2724         op->ors_deref = LDAP_DEREF_NEVER;
2725         op->o_time = slap_get_time();
2726         op->ors_tlimit = SLAP_NO_LIMIT;
2727
2728
2729         if ( uuids ) {
2730                 Filter uf;
2731                 AttributeAssertion eq = ATTRIBUTEASSERTION_INIT;
2732                 int i;
2733
2734                 op->ors_attrsonly = 1;
2735                 op->ors_attrs = slap_anlist_no_attrs;
2736                 op->ors_limit = NULL;
2737                 op->ors_filter = &uf;
2738
2739                 uf.f_ava = &eq;
2740                 uf.f_av_desc = slap_schema.si_ad_entryUUID;
2741                 uf.f_next = NULL;
2742                 uf.f_choice = LDAP_FILTER_EQUALITY;
2743                 si->si_refreshDelete |= NP_DELETE_ONE;
2744
2745                 for (i=0; uuids[i].bv_val; i++) {
2746                         op->ors_slimit = 1;
2747                         uf.f_av_value = uuids[i];
2748                         filter2bv_x( op, op->ors_filter, &op->ors_filterstr );
2749                         rc = be->be_search( op, &rs_search );
2750                         op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
2751                 }
2752                 si->si_refreshDelete ^= NP_DELETE_ONE;
2753         } else {
2754                 Filter *cf, *of;
2755                 Filter mmf[2];
2756                 AttributeAssertion mmaa;
2757
2758                 memset( &an[0], 0, 2 * sizeof( AttributeName ) );
2759                 an[0].an_name = slap_schema.si_ad_entryUUID->ad_cname;
2760                 an[0].an_desc = slap_schema.si_ad_entryUUID;
2761                 op->ors_attrs = an;
2762                 op->ors_slimit = SLAP_NO_LIMIT;
2763                 op->ors_tlimit = SLAP_NO_LIMIT;
2764                 op->ors_limit = NULL;
2765                 op->ors_attrsonly = 0;
2766                 op->ors_filter = filter_dup( si->si_filter, op->o_tmpmemctx );
2767                 /* In multimaster, updates can continue to arrive while
2768                  * we're searching. Limit the search result to entries
2769                  * older than our newest cookie CSN.
2770                  */
2771                 if ( SLAP_MULTIMASTER( op->o_bd )) {
2772                         Filter *f;
2773                         int i;
2774
2775                         f = mmf;
2776                         f->f_choice = LDAP_FILTER_AND;
2777                         f->f_next = op->ors_filter;
2778                         f->f_and = f+1;
2779                         of = f->f_and;
2780                         f = of;
2781                         f->f_choice = LDAP_FILTER_LE;
2782                         f->f_ava = &mmaa;
2783                         f->f_av_desc = slap_schema.si_ad_entryCSN;
2784                         f->f_next = NULL;
2785                         BER_BVZERO( &f->f_av_value );
2786                         for ( i=0; i<sc->numcsns; i++ ) {
2787                                 if ( ber_bvcmp( &sc->ctxcsn[i], &f->f_av_value ) > 0 )
2788                                         f->f_av_value = sc->ctxcsn[i];
2789                         }
2790                         of = op->ors_filter;
2791                         op->ors_filter = mmf;
2792                         filter2bv_x( op, op->ors_filter, &op->ors_filterstr );
2793                 } else {
2794                         cf = NULL;
2795                         op->ors_filterstr = si->si_filterstr;
2796                 }
2797                 op->o_nocaching = 1;
2798
2799
2800                 rc = be->be_search( op, &rs_search );
2801                 if ( SLAP_MULTIMASTER( op->o_bd )) {
2802                         op->ors_filter = of;
2803                 }
2804                 if ( op->ors_filter ) filter_free_x( op, op->ors_filter, 1 );
2805                 if ( op->ors_filterstr.bv_val != si->si_filterstr.bv_val ) {
2806                         op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
2807                 }
2808
2809         }
2810
2811         op->o_nocaching = 0;
2812
2813         if ( !LDAP_LIST_EMPTY( &si->si_nonpresentlist ) ) {
2814
2815                 if ( sc->ctxcsn && !BER_BVISNULL( &sc->ctxcsn[m] ) ) {
2816                         csn = sc->ctxcsn[m];
2817                 } else {
2818                         csn = si->si_syncCookie.ctxcsn[0];
2819                 }
2820
2821                 op->o_bd = si->si_wbe;
2822                 slap_queue_csn( op, &csn );
2823
2824                 np_list = LDAP_LIST_FIRST( &si->si_nonpresentlist );
2825                 while ( np_list != NULL ) {
2826                         LDAP_LIST_REMOVE( np_list, npe_link );
2827                         np_prev = np_list;
2828                         np_list = LDAP_LIST_NEXT( np_list, npe_link );
2829                         op->o_tag = LDAP_REQ_DELETE;
2830                         op->o_callback = &cb;
2831                         cb.sc_response = null_callback;
2832                         cb.sc_private = si;
2833                         op->o_req_dn = *np_prev->npe_name;
2834                         op->o_req_ndn = *np_prev->npe_nname;
2835                         rc = op->o_bd->be_delete( op, &rs_delete );
2836                         Debug( LDAP_DEBUG_SYNC,
2837                                 "syncrepl_del_nonpresent: %s be_delete %s (%d)\n",
2838                                 si->si_ridtxt, op->o_req_dn.bv_val, rc );
2839
2840                         if ( rs_delete.sr_err == LDAP_NOT_ALLOWED_ON_NONLEAF ) {
2841                                 Modifications mod1, mod2;
2842                                 mod1.sml_op = LDAP_MOD_REPLACE;
2843                                 mod1.sml_flags = 0;
2844                                 mod1.sml_desc = slap_schema.si_ad_objectClass;
2845                                 mod1.sml_type = mod1.sml_desc->ad_cname;
2846                                 mod1.sml_numvals = 2;
2847                                 mod1.sml_values = &gcbva[0];
2848                                 mod1.sml_nvalues = NULL;
2849                                 mod1.sml_next = &mod2;
2850
2851                                 mod2.sml_op = LDAP_MOD_REPLACE;
2852                                 mod2.sml_flags = 0;
2853                                 mod2.sml_desc = slap_schema.si_ad_structuralObjectClass;
2854                                 mod2.sml_type = mod2.sml_desc->ad_cname;
2855                                 mod2.sml_numvals = 1;
2856                                 mod2.sml_values = &gcbva[1];
2857                                 mod2.sml_nvalues = NULL;
2858                                 mod2.sml_next = NULL;
2859
2860                                 op->o_tag = LDAP_REQ_MODIFY;
2861                                 op->orm_modlist = &mod1;
2862
2863                                 rc = op->o_bd->be_modify( op, &rs_modify );
2864                                 if ( mod2.sml_next ) slap_mods_free( mod2.sml_next, 1 );
2865                         }
2866
2867                         while ( rs_delete.sr_err == LDAP_SUCCESS &&
2868                                         op->o_delete_glue_parent ) {
2869                                 op->o_delete_glue_parent = 0;
2870                                 if ( !be_issuffix( be, &op->o_req_ndn ) ) {
2871                                         slap_callback cb = { NULL };
2872                                         cb.sc_response = slap_null_cb;
2873                                         dnParent( &op->o_req_ndn, &pdn );
2874                                         op->o_req_dn = pdn;
2875                                         op->o_req_ndn = pdn;
2876                                         op->o_callback = &cb;
2877                                         /* give it a root privil ? */
2878                                         op->o_bd->be_delete( op, &rs_delete );
2879                                 } else {
2880                                         break;
2881                                 }
2882                         }
2883
2884                         op->o_delete_glue_parent = 0;
2885
2886                         ber_bvfree( np_prev->npe_name );
2887                         ber_bvfree( np_prev->npe_nname );
2888                         ch_free( np_prev );
2889
2890                         if ( slapd_shutdown ) {
2891                                 break;
2892                         }
2893                 }
2894
2895                 slap_graduate_commit_csn( op );
2896                 op->o_bd = be;
2897
2898                 op->o_tmpfree( op->o_csn.bv_val, op->o_tmpmemctx );
2899                 BER_BVZERO( &op->o_csn );
2900         }
2901
2902         return;
2903 }
2904
2905 static int
2906 syncrepl_add_glue_ancestors(
2907         Operation* op,
2908         Entry *e )
2909 {
2910         Backend *be = op->o_bd;
2911         slap_callback cb = { NULL };
2912         Attribute       *a;
2913         int     rc;
2914         int suffrdns;
2915         int i;
2916         struct berval dn = BER_BVNULL;
2917         struct berval ndn = BER_BVNULL;
2918         Entry   *glue;
2919         SlapReply       rs_add = {REP_RESULT};
2920         struct berval   ptr, nptr;
2921         char            *comma;
2922
2923         op->o_tag = LDAP_REQ_ADD;
2924         op->o_callback = &cb;
2925         cb.sc_response = null_callback;
2926         cb.sc_private = NULL;
2927
2928         dn = e->e_name;
2929         ndn = e->e_nname;
2930
2931         /* count RDNs in suffix */
2932         if ( !BER_BVISEMPTY( &be->be_nsuffix[0] ) ) {
2933                 for ( i = 0, ptr = be->be_nsuffix[0], comma = ptr.bv_val; comma != NULL; comma = ber_bvchr( &ptr, ',' ) ) {
2934                         comma++;
2935                         ptr.bv_len -= comma - ptr.bv_val;
2936                         ptr.bv_val = comma;
2937                         i++;
2938                 }
2939                 suffrdns = i;
2940         } else {
2941                 /* suffix is "" */
2942                 suffrdns = 0;
2943         }
2944
2945         /* Start with BE suffix */
2946         ptr = dn;
2947         for ( i = 0; i < suffrdns; i++ ) {
2948                 comma = ber_bvrchr( &ptr, ',' );
2949                 if ( comma != NULL ) {
2950                         ptr.bv_len = comma - ptr.bv_val;
2951                 } else {
2952                         ptr.bv_len = 0;
2953                         break;
2954                 }
2955         }
2956
2957         if ( !BER_BVISEMPTY( &ptr ) ) {
2958                 dn.bv_len -= ptr.bv_len + 1;
2959                 dn.bv_val += ptr.bv_len + 1;
2960         }
2961
2962         /* the normalizedDNs are always the same length, no counting
2963          * required.
2964          */
2965         nptr = ndn;
2966         if ( ndn.bv_len > be->be_nsuffix[0].bv_len ) {
2967                 ndn.bv_val += ndn.bv_len - be->be_nsuffix[0].bv_len;
2968                 ndn.bv_len = be->be_nsuffix[0].bv_len;
2969
2970                 nptr.bv_len = ndn.bv_val - nptr.bv_val - 1;
2971
2972         } else {
2973                 nptr.bv_len = 0;
2974         }
2975
2976         while ( ndn.bv_val > e->e_nname.bv_val ) {
2977                 glue = entry_alloc();
2978                 ber_dupbv( &glue->e_name, &dn );
2979                 ber_dupbv( &glue->e_nname, &ndn );
2980
2981                 a = attr_alloc( slap_schema.si_ad_objectClass );
2982
2983                 a->a_numvals = 2;
2984                 a->a_vals = ch_calloc( 3, sizeof( struct berval ) );
2985                 ber_dupbv( &a->a_vals[0], &gcbva[0] );
2986                 ber_dupbv( &a->a_vals[1], &gcbva[1] );
2987                 ber_dupbv( &a->a_vals[2], &gcbva[2] );
2988
2989                 a->a_nvals = a->a_vals;
2990
2991                 a->a_next = glue->e_attrs;
2992                 glue->e_attrs = a;
2993
2994                 a = attr_alloc( slap_schema.si_ad_structuralObjectClass );
2995
2996                 a->a_numvals = 1;
2997                 a->a_vals = ch_calloc( 2, sizeof( struct berval ) );
2998                 ber_dupbv( &a->a_vals[0], &gcbva[1] );
2999                 ber_dupbv( &a->a_vals[1], &gcbva[2] );
3000
3001                 a->a_nvals = a->a_vals;
3002
3003                 a->a_next = glue->e_attrs;
3004                 glue->e_attrs = a;
3005
3006                 op->o_req_dn = glue->e_name;
3007                 op->o_req_ndn = glue->e_nname;
3008                 op->ora_e = glue;
3009                 rc = be->be_add ( op, &rs_add );
3010                 if ( rs_add.sr_err == LDAP_SUCCESS ) {
3011                         if ( op->ora_e == glue )
3012                                 be_entry_release_w( op, glue );
3013                 } else {
3014                 /* incl. ALREADY EXIST */
3015                         entry_free( glue );
3016                         if ( rs_add.sr_err != LDAP_ALREADY_EXISTS ) {
3017                                 entry_free( e );
3018                                 return rc;
3019                         }
3020                 }
3021
3022                 /* Move to next child */
3023                 comma = ber_bvrchr( &ptr, ',' );
3024                 if ( comma == NULL ) {
3025                         break;
3026                 }
3027                 ptr.bv_len = comma - ptr.bv_val;
3028
3029                 dn.bv_val = ++comma;
3030                 dn.bv_len = e->e_name.bv_len - (dn.bv_val - e->e_name.bv_val);
3031
3032                 comma = ber_bvrchr( &nptr, ',' );
3033                 assert( comma != NULL );
3034                 nptr.bv_len = comma - nptr.bv_val;
3035
3036                 ndn.bv_val = ++comma;
3037                 ndn.bv_len = e->e_nname.bv_len - (ndn.bv_val - e->e_nname.bv_val);
3038         }
3039
3040         return rc;
3041 }
3042
3043 int
3044 syncrepl_add_glue(
3045         Operation* op,
3046         Entry *e )
3047 {
3048         slap_callback cb = { NULL };
3049         int     rc;
3050         Backend *be = op->o_bd;
3051         SlapReply       rs_add = {REP_RESULT};
3052
3053         rc = syncrepl_add_glue_ancestors( op, e );
3054         switch ( rc ) {
3055         case LDAP_SUCCESS:
3056         case LDAP_ALREADY_EXISTS:
3057                 break;
3058
3059         default:
3060                 return rc;
3061         }
3062
3063         op->o_tag = LDAP_REQ_ADD;
3064         op->o_callback = &cb;
3065         cb.sc_response = null_callback;
3066         cb.sc_private = NULL;
3067
3068         op->o_req_dn = e->e_name;
3069         op->o_req_ndn = e->e_nname;
3070         op->ora_e = e;
3071         rc = be->be_add ( op, &rs_add );
3072         if ( rs_add.sr_err == LDAP_SUCCESS ) {
3073                 if ( op->ora_e == e )
3074                         be_entry_release_w( op, e );
3075         } else {
3076                 entry_free( e );
3077         }
3078
3079         return rc;
3080 }
3081
3082 static int
3083 syncrepl_updateCookie(
3084         syncinfo_t *si,
3085         Operation *op,
3086         struct sync_cookie *syncCookie )
3087 {
3088         Backend *be = op->o_bd;
3089         Modifications mod;
3090         struct berval first = BER_BVNULL;
3091 #ifdef CHECK_CSN
3092         Syntax *syn = slap_schema.si_ad_contextCSN->ad_type->sat_syntax;
3093 #endif
3094
3095         int rc, i, j, changed = 0;
3096         ber_len_t len;
3097
3098         slap_callback cb = { NULL };
3099         SlapReply       rs_modify = {REP_RESULT};
3100
3101         mod.sml_op = LDAP_MOD_REPLACE;
3102         mod.sml_desc = slap_schema.si_ad_contextCSN;
3103         mod.sml_type = mod.sml_desc->ad_cname;
3104         mod.sml_flags = SLAP_MOD_INTERNAL;
3105         mod.sml_nvalues = NULL;
3106         mod.sml_next = NULL;
3107
3108         ldap_pvt_thread_mutex_lock( &si->si_cookieState->cs_mutex );
3109
3110 #ifdef CHECK_CSN
3111         for ( i=0; i<syncCookie->numcsns; i++ ) {
3112                 assert( !syn->ssyn_validate( syn, syncCookie->ctxcsn+i ));
3113         }
3114         for ( i=0; i<si->si_cookieState->cs_num; i++ ) {
3115                 assert( !syn->ssyn_validate( syn, si->si_cookieState->cs_vals+i ));
3116         }
3117 #endif
3118
3119         /* clone the cookieState CSNs so we can Replace the whole thing */
3120         mod.sml_numvals = si->si_cookieState->cs_num;
3121         mod.sml_values = op->o_tmpalloc(( mod.sml_numvals+1 )*sizeof(struct berval), op->o_tmpmemctx );
3122         for ( i=0; i<mod.sml_numvals; i++ )
3123                 mod.sml_values[i] = si->si_cookieState->cs_vals[i];
3124         BER_BVZERO( &mod.sml_values[i] );
3125
3126         /* find any CSNs in the syncCookie that are newer than the cookieState */
3127         for ( i=0; i<syncCookie->numcsns; i++ ) {
3128                 for ( j=0; j<si->si_cookieState->cs_num; j++ ) {
3129                         if ( syncCookie->sids[i] != si->si_cookieState->cs_sids[j] )
3130                                 continue;
3131                         len = syncCookie->ctxcsn[i].bv_len;
3132                         if ( len > si->si_cookieState->cs_vals[j].bv_len )
3133                                 len = si->si_cookieState->cs_vals[j].bv_len;
3134                         if ( memcmp( syncCookie->ctxcsn[i].bv_val,
3135                                 si->si_cookieState->cs_vals[j].bv_val, len ) > 0 ) {
3136                                 mod.sml_values[j] = syncCookie->ctxcsn[i];
3137                                 changed = 1;
3138                                 if ( BER_BVISNULL( &first ) ) {
3139                                         first = syncCookie->ctxcsn[i];
3140
3141                                 } else if ( memcmp( syncCookie->ctxcsn[i].bv_val, first.bv_val, first.bv_len ) > 0 )
3142                                 {
3143                                         first = syncCookie->ctxcsn[i];
3144                                 }
3145                         }
3146                         break;
3147                 }
3148                 /* there was no match for this SID, it's a new CSN */
3149                 if ( j == si->si_cookieState->cs_num ) {
3150                         mod.sml_values = op->o_tmprealloc( mod.sml_values,
3151                                 ( mod.sml_numvals+2 )*sizeof(struct berval), op->o_tmpmemctx );
3152                         mod.sml_values[mod.sml_numvals++] = syncCookie->ctxcsn[i];
3153                         BER_BVZERO( &mod.sml_values[mod.sml_numvals] );
3154                         if ( BER_BVISNULL( &first ) ) {
3155                                 first = syncCookie->ctxcsn[i];
3156                         } else if ( memcmp( syncCookie->ctxcsn[i].bv_val, first.bv_val, first.bv_len ) > 0 )
3157                         {
3158                                 first = syncCookie->ctxcsn[i];
3159                         }
3160                         changed = 1;
3161                 }
3162         }
3163         /* Should never happen, ITS#5065 */
3164         if ( BER_BVISNULL( &first ) || !changed ) {
3165                 ldap_pvt_thread_mutex_unlock( &si->si_cookieState->cs_mutex );
3166                 op->o_tmpfree( mod.sml_values, op->o_tmpmemctx );
3167                 return 0;
3168         }
3169         op->o_bd = si->si_wbe;
3170         slap_queue_csn( op, &first );
3171
3172         op->o_tag = LDAP_REQ_MODIFY;
3173
3174         cb.sc_response = null_callback;
3175         cb.sc_private = si;
3176
3177         op->o_callback = &cb;
3178         op->o_req_dn = si->si_contextdn;
3179         op->o_req_ndn = si->si_contextdn;
3180
3181         /* update contextCSN */
3182         op->o_dont_replicate = 1;
3183
3184         op->orm_modlist = &mod;
3185         op->orm_no_opattrs = 1;
3186         rc = op->o_bd->be_modify( op, &rs_modify );
3187
3188         if ( rs_modify.sr_err == LDAP_NO_SUCH_OBJECT &&
3189                 SLAP_SYNC_SUBENTRY( op->o_bd )) {
3190                 const char      *text;
3191                 char txtbuf[SLAP_TEXT_BUFLEN];
3192                 size_t textlen = sizeof txtbuf;
3193                 Entry *e = slap_create_context_csn_entry( op->o_bd, NULL );
3194                 rc = slap_mods2entry( &mod, &e, 0, 1, &text, txtbuf, textlen);
3195                 op->ora_e = e;
3196                 rc = op->o_bd->be_add( op, &rs_modify );
3197                 if ( e == op->ora_e )
3198                         be_entry_release_w( op, op->ora_e );
3199         }
3200
3201         op->orm_no_opattrs = 0;
3202         op->o_dont_replicate = 0;
3203
3204         if ( rs_modify.sr_err == LDAP_SUCCESS ) {
3205                 slap_sync_cookie_free( &si->si_syncCookie, 0 );
3206                 slap_dup_sync_cookie( &si->si_syncCookie, syncCookie );
3207                 /* If we replaced any old values */
3208                 for ( i=0; i<si->si_cookieState->cs_num; i++ ) {
3209                         if ( mod.sml_values[i].bv_val != si->si_cookieState->cs_vals[i].bv_val )
3210                                         ber_bvreplace( &si->si_cookieState->cs_vals[i],
3211                                                 &mod.sml_values[i] );
3212                 }
3213                 /* Handle any added values */
3214                 if ( i < mod.sml_numvals ) {
3215                         si->si_cookieState->cs_num = mod.sml_numvals;
3216                         value_add( &si->si_cookieState->cs_vals, &mod.sml_values[i] );
3217                         free( si->si_cookieState->cs_sids );
3218                         si->si_cookieState->cs_sids = slap_parse_csn_sids(
3219                                 si->si_cookieState->cs_vals, si->si_cookieState->cs_num, NULL );
3220                 }
3221
3222                 si->si_cookieState->cs_age++;
3223                 si->si_cookieAge = si->si_cookieState->cs_age;
3224         } else {
3225                 Debug( LDAP_DEBUG_ANY,
3226                         "syncrepl_updateCookie: %s be_modify failed (%d)\n",
3227                         si->si_ridtxt, rs_modify.sr_err, 0 );
3228         }
3229         ldap_pvt_thread_mutex_unlock( &si->si_cookieState->cs_mutex );
3230
3231         op->o_bd = be;
3232         op->o_tmpfree( op->o_csn.bv_val, op->o_tmpmemctx );
3233         BER_BVZERO( &op->o_csn );
3234         if ( mod.sml_next ) slap_mods_free( mod.sml_next, 1 );
3235         op->o_tmpfree( mod.sml_values, op->o_tmpmemctx );
3236
3237 #ifdef CHECK_CSN
3238         for ( i=0; i<si->si_cookieState->cs_num; i++ ) {
3239                 assert( !syn->ssyn_validate( syn, si->si_cookieState->cs_vals+i ));
3240         }
3241 #endif
3242
3243         return rc;
3244 }
3245
3246 /* Compare the attribute from the old entry to the one in the new
3247  * entry. The Modifications from the new entry will either be left
3248  * in place, or changed to an Add or Delete as needed.
3249  */
3250 static void
3251 attr_cmp( Operation *op, Attribute *old, Attribute *new,
3252         Modifications ***mret, Modifications ***mcur )
3253 {
3254         int i, j;
3255         Modifications *mod, **modtail;
3256
3257         modtail = *mret;
3258
3259         if ( old ) {
3260                 int n, o, nn, no;
3261                 struct berval **adds, **dels;
3262                 /* count old and new */
3263                 for ( o=0; old->a_vals[o].bv_val; o++ ) ;
3264                 for ( n=0; new->a_vals[n].bv_val; n++ ) ;
3265
3266                 /* there MUST be both old and new values */
3267                 assert( o != 0 );
3268                 assert( n != 0 );
3269                 j = 0;
3270
3271                 adds = op->o_tmpalloc( sizeof(struct berval *) * n, op->o_tmpmemctx );
3272                 dels = op->o_tmpalloc( sizeof(struct berval *) * o, op->o_tmpmemctx );
3273
3274                 for ( i=0; i<o; i++ ) dels[i] = &old->a_vals[i];
3275                 for ( i=0; i<n; i++ ) adds[i] = &new->a_vals[i];
3276
3277                 nn = n; no = o;
3278
3279                 for ( i=0; i<o; i++ ) {
3280                         for ( j=0; j<n; j++ ) {
3281                                 if ( !adds[j] )
3282                                         continue;
3283                                 if ( bvmatch( dels[i], adds[j] ) ) {
3284                                         no--;
3285                                         nn--;
3286                                         adds[j] = NULL;
3287                                         dels[i] = NULL;
3288                                         break;
3289                                 }
3290                         }
3291                 }
3292
3293                 /* Don't delete/add an objectClass, always use the replace op.
3294                  * Modify would fail if provider has replaced entry with a new,
3295                  * and the new explicitly includes a superior of a class that was
3296                  * only included implicitly in the old entry.  Ref ITS#5517.
3297                  *
3298                  * Also use replace op if attr has no equality matching rule.
3299                  * (ITS#5781)
3300                  */
3301                 if ( ( nn || ( no > 0 && no < o ) ) &&
3302                         ( old->a_desc == slap_schema.si_ad_objectClass ||
3303                          !old->a_desc->ad_type->sat_equality ) )
3304                 {
3305                         no = o;
3306                 }
3307
3308                 i = j;
3309                 /* all old values were deleted, just use the replace op */
3310                 if ( no == o ) {
3311                         i = j-1;
3312                 } else if ( no ) {
3313                 /* delete some values */
3314                         mod = ch_malloc( sizeof( Modifications ) );
3315                         mod->sml_op = LDAP_MOD_DELETE;
3316                         mod->sml_flags = 0;
3317                         mod->sml_desc = old->a_desc;
3318                         mod->sml_type = mod->sml_desc->ad_cname;
3319                         mod->sml_numvals = no;
3320                         mod->sml_values = ch_malloc( ( no + 1 ) * sizeof(struct berval) );
3321                         if ( old->a_vals != old->a_nvals ) {
3322                                 mod->sml_nvalues = ch_malloc( ( no + 1 ) * sizeof(struct berval) );
3323                         } else {
3324                                 mod->sml_nvalues = NULL;
3325                         }
3326                         j = 0;
3327                         for ( i = 0; i < o; i++ ) {
3328                                 if ( !dels[i] ) continue;
3329                                 ber_dupbv( &mod->sml_values[j], &old->a_vals[i] );
3330                                 if ( mod->sml_nvalues ) {
3331                                         ber_dupbv( &mod->sml_nvalues[j], &old->a_nvals[i] );
3332                                 }
3333                                 j++;
3334                         }
3335                         BER_BVZERO( &mod->sml_values[j] );
3336                         if ( mod->sml_nvalues ) {
3337                                 BER_BVZERO( &mod->sml_nvalues[j] );
3338                         }
3339                         *modtail = mod;
3340                         modtail = &mod->sml_next;
3341                         i = j;
3342                 }
3343                 op->o_tmpfree( dels, op->o_tmpmemctx );
3344                 /* some values were added */
3345                 if ( nn && no < o ) {
3346                         mod = ch_malloc( sizeof( Modifications ) );
3347                         mod->sml_op = LDAP_MOD_ADD;
3348                         mod->sml_flags = 0;
3349                         mod->sml_desc = old->a_desc;
3350                         mod->sml_type = mod->sml_desc->ad_cname;
3351                         mod->sml_numvals = nn;
3352                         mod->sml_values = ch_malloc( ( nn + 1 ) * sizeof(struct berval) );
3353                         if ( old->a_vals != old->a_nvals ) {
3354                                 mod->sml_nvalues = ch_malloc( ( nn + 1 ) * sizeof(struct berval) );
3355                         } else {
3356                                 mod->sml_nvalues = NULL;
3357                         }
3358                         j = 0;
3359                         for ( i = 0; i < n; i++ ) {
3360                                 if ( !adds[i] ) continue;
3361                                 ber_dupbv( &mod->sml_values[j], &new->a_vals[i] );
3362                                 if ( mod->sml_nvalues ) {
3363                                         ber_dupbv( &mod->sml_nvalues[j], &new->a_nvals[i] );
3364                                 }
3365                                 j++;
3366                         }
3367                         BER_BVZERO( &mod->sml_values[j] );
3368                         if ( mod->sml_nvalues ) {
3369                                 BER_BVZERO( &mod->sml_nvalues[j] );
3370                         }
3371                         *modtail = mod;
3372                         modtail = &mod->sml_next;
3373                         i = j;
3374                 }
3375                 op->o_tmpfree( adds, op->o_tmpmemctx );
3376         } else {
3377                 /* new attr, just use the new mod */
3378                 i = 0;
3379                 j = 1;
3380         }
3381         /* advance to next element */
3382         mod = **mcur;
3383         if ( mod ) {
3384                 if ( i != j ) {
3385                         **mcur = mod->sml_next;
3386                         *modtail = mod;
3387                         modtail = &mod->sml_next;
3388                 } else {
3389                         *mcur = &mod->sml_next;
3390                 }
3391         }
3392         *mret = modtail;
3393 }
3394
3395 /* Generate a set of modifications to change the old entry into the
3396  * new one. On input ml is a list of modifications equivalent to
3397  * the new entry. It will be massaged and the result will be stored
3398  * in mods.
3399  */
3400 void syncrepl_diff_entry( Operation *op, Attribute *old, Attribute *new,
3401         Modifications **mods, Modifications **ml, int is_ctx)
3402 {
3403         Modifications **modtail = mods;
3404
3405         /* We assume that attributes are saved in the same order
3406          * in the remote and local databases. So if we walk through
3407          * the attributeDescriptions one by one they should match in
3408          * lock step. If not, look for an add or delete.
3409          */
3410         while ( old && new )
3411         {
3412                 /* If we've seen this before, use its mod now */
3413                 if ( new->a_flags & SLAP_ATTR_IXADD ) {
3414                         attr_cmp( op, NULL, new, &modtail, &ml );
3415                         new = new->a_next;
3416                         continue;
3417                 }
3418                 /* Skip contextCSN */
3419                 if ( is_ctx && old->a_desc ==
3420                         slap_schema.si_ad_contextCSN ) {
3421                         old = old->a_next;
3422                         continue;
3423                 }
3424
3425                 if ( old->a_desc != new->a_desc ) {
3426                         Modifications *mod;
3427                         Attribute *tmp;
3428
3429                         /* If it's just been re-added later,
3430                          * remember that we've seen it.
3431                          */
3432                         tmp = attr_find( new, old->a_desc );
3433                         if ( tmp ) {
3434                                 tmp->a_flags |= SLAP_ATTR_IXADD;
3435                         } else {
3436                                 /* If it's a new attribute, pull it in.
3437                                  */
3438                                 tmp = attr_find( old, new->a_desc );
3439                                 if ( !tmp ) {
3440                                         attr_cmp( op, NULL, new, &modtail, &ml );
3441                                         new = new->a_next;
3442                                         continue;
3443                                 }
3444                                 /* Delete old attr */
3445                                 mod = ch_malloc( sizeof( Modifications ) );
3446                                 mod->sml_op = LDAP_MOD_DELETE;
3447                                 mod->sml_flags = 0;
3448                                 mod->sml_desc = old->a_desc;
3449                                 mod->sml_type = mod->sml_desc->ad_cname;
3450                                 mod->sml_numvals = 0;
3451                                 mod->sml_values = NULL;
3452                                 mod->sml_nvalues = NULL;
3453                                 *modtail = mod;
3454                                 modtail = &mod->sml_next;
3455                         }
3456                         old = old->a_next;
3457                         continue;
3458                 }
3459                 /* kludge - always update modifiersName so that it
3460                  * stays co-located with the other mod opattrs. But only
3461                  * if we know there are other valid mods.
3462                  */
3463                 if ( *mods && ( old->a_desc == slap_schema.si_ad_modifiersName ||
3464                         old->a_desc == slap_schema.si_ad_modifyTimestamp ))
3465                         attr_cmp( op, NULL, new, &modtail, &ml );
3466                 else
3467                         attr_cmp( op, old, new, &modtail, &ml );
3468                 new = new->a_next;
3469                 old = old->a_next;
3470         }
3471         *modtail = *ml;
3472         *ml = NULL;
3473 }
3474
3475 static int
3476 dn_callback(
3477         Operation*      op,
3478         SlapReply*      rs )
3479 {
3480         dninfo *dni = op->o_callback->sc_private;
3481
3482         if ( rs->sr_type == REP_SEARCH ) {
3483                 if ( !BER_BVISNULL( &dni->dn ) ) {
3484                         Debug( LDAP_DEBUG_ANY,
3485                                 "dn_callback : consistency error - "
3486                                 "entryUUID is not unique\n", 0, 0, 0 );
3487                 } else {
3488                         ber_dupbv_x( &dni->dn, &rs->sr_entry->e_name, op->o_tmpmemctx );
3489                         ber_dupbv_x( &dni->ndn, &rs->sr_entry->e_nname, op->o_tmpmemctx );
3490                         /* If there is a new entry, see if it differs from the old.
3491                          * We compare the non-normalized values so that cosmetic changes
3492                          * in the provider are always propagated.
3493                          */
3494                         if ( dni->new_entry ) {
3495                                 Modifications **modtail, **ml;
3496                                 Attribute *old, *new;
3497                                 struct berval old_rdn, new_rdn;
3498                                 struct berval old_p, new_p;
3499                                 int is_ctx, new_sup = 0;
3500
3501                                 /* If old entry is not a glue entry, make sure new entry
3502                                  * is actually newer than old entry
3503                                  */
3504                                 if ( !is_entry_glue( rs->sr_entry )) {
3505                                         old = attr_find( rs->sr_entry->e_attrs,
3506                                                 slap_schema.si_ad_entryCSN );
3507                                         new = attr_find( dni->new_entry->e_attrs,
3508                                                 slap_schema.si_ad_entryCSN );
3509                                         if ( new && old ) {
3510                                                 int rc;
3511                                                 ber_len_t len = old->a_vals[0].bv_len;
3512                                                 if ( len > new->a_vals[0].bv_len )
3513                                                         len = new->a_vals[0].bv_len;
3514                                                 rc = memcmp( old->a_vals[0].bv_val,
3515                                                         new->a_vals[0].bv_val, len );
3516                                                 if ( rc > 0 ) {
3517                                                         Debug( LDAP_DEBUG_SYNC,
3518                                                                 "dn_callback : new entry is older than ours "
3519                                                                 "%s ours %s, new %s\n",
3520                                                                 rs->sr_entry->e_name.bv_val,
3521                                                                 old->a_vals[0].bv_val,
3522                                                                 new->a_vals[0].bv_val );
3523                                                         return LDAP_SUCCESS;
3524                                                 } else if ( rc == 0 ) {
3525                                                         Debug( LDAP_DEBUG_SYNC,
3526                                                                 "dn_callback : entries have identical CSN "
3527                                                                 "%s %s\n",
3528                                                                 rs->sr_entry->e_name.bv_val,
3529                                                                 old->a_vals[0].bv_val, 0 );
3530                                                         return LDAP_SUCCESS;
3531                                                 }
3532                                         }
3533                                 }
3534
3535                                 is_ctx = dn_match( &rs->sr_entry->e_nname,
3536                                         &op->o_bd->be_nsuffix[0] );
3537
3538                                 /* Did the DN change?
3539                                  * case changes in the parent are ignored,
3540                                  * we only want to know if the RDN was
3541                                  * actually changed.
3542                                  */
3543                                 dnRdn( &rs->sr_entry->e_name, &old_rdn );
3544                                 dnRdn( &dni->new_entry->e_name, &new_rdn );
3545                                 dnParent( &rs->sr_entry->e_nname, &old_p );
3546                                 dnParent( &dni->new_entry->e_nname, &new_p );
3547
3548                                 new_sup = !dn_match( &old_p, &new_p );
3549                                 if ( !dn_match( &old_rdn, &new_rdn ) || new_sup )
3550                                 {
3551                                         struct berval oldRDN, oldVal;
3552                                         AttributeDescription *ad = NULL;
3553                                         int oldpos, newpos;
3554                                         Attribute *a;
3555
3556                                         dni->renamed = 1;
3557                                         if ( new_sup )
3558                                                 dni->nnewSup = new_p;
3559
3560                                         /* See if the oldRDN was deleted */
3561                                         dnRdn( &rs->sr_entry->e_nname, &oldRDN );
3562                                         oldVal.bv_val = strchr(oldRDN.bv_val, '=') + 1;
3563                                         oldVal.bv_len = oldRDN.bv_len - ( oldVal.bv_val -
3564                                                 oldRDN.bv_val );
3565                                         oldRDN.bv_len -= oldVal.bv_len + 1;
3566                                         slap_bv2ad( &oldRDN, &ad, &rs->sr_text );
3567                                         dni->oldDesc = ad;
3568                                         for ( oldpos=0, a=rs->sr_entry->e_attrs;
3569                                                 a && a->a_desc != ad; oldpos++, a=a->a_next );
3570                                         dni->oldNattr = a;
3571                                         for ( newpos=0, a=dni->new_entry->e_attrs;
3572                                                 a && a->a_desc != ad; newpos++, a=a->a_next );
3573                                         if ( !a || oldpos != newpos || attr_valfind( a,
3574                                                 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH |
3575                                                 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
3576                                                 SLAP_MR_VALUE_OF_SYNTAX,
3577                                                 &oldVal, NULL, op->o_tmpmemctx ) != LDAP_SUCCESS )
3578                                         {
3579                                                 dni->delOldRDN = 1;
3580                                         }
3581                                         /* Get the newRDN's desc */
3582                                         dnRdn( &dni->new_entry->e_nname, &oldRDN );
3583                                         oldVal.bv_val = strchr(oldRDN.bv_val, '=');
3584                                         oldRDN.bv_len = oldVal.bv_val - oldRDN.bv_val;
3585                                         ad = NULL;
3586                                         slap_bv2ad( &oldRDN, &ad, &rs->sr_text );
3587                                         dni->newDesc = ad;
3588
3589                                         /* A ModDN has happened, but in Refresh mode other
3590                                          * changes may have occurred before we picked it up.
3591                                          * So fallthru to regular Modify processing.
3592                                          */
3593                                 }
3594
3595                                 syncrepl_diff_entry( op, rs->sr_entry->e_attrs,
3596                                         dni->new_entry->e_attrs, &dni->mods, dni->modlist,
3597                                         is_ctx );
3598                         }
3599                 }
3600         } else if ( rs->sr_type == REP_RESULT ) {
3601                 if ( rs->sr_err == LDAP_SIZELIMIT_EXCEEDED ) {
3602                         Debug( LDAP_DEBUG_ANY,
3603                                 "dn_callback : consistency error - "
3604                                 "entryUUID is not unique\n", 0, 0, 0 );
3605                 }
3606         }
3607
3608         return LDAP_SUCCESS;
3609 }
3610
3611 static int
3612 nonpresent_callback(
3613         Operation*      op,
3614         SlapReply*      rs )
3615 {
3616         syncinfo_t *si = op->o_callback->sc_private;
3617         Attribute *a;
3618         int count = 0;
3619         struct berval* present_uuid = NULL;
3620         struct nonpresent_entry *np_entry;
3621
3622         if ( rs->sr_type == REP_RESULT ) {
3623                 count = avl_free( si->si_presentlist, ch_free );
3624                 si->si_presentlist = NULL;
3625
3626         } else if ( rs->sr_type == REP_SEARCH ) {
3627                 if ( !( si->si_refreshDelete & NP_DELETE_ONE ) ) {
3628                         a = attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_entryUUID );
3629
3630                         if ( a ) {
3631                                 present_uuid = avl_find( si->si_presentlist, &a->a_nvals[0],
3632                                         syncuuid_cmp );
3633                         }
3634
3635                         if ( LogTest( LDAP_DEBUG_SYNC ) ) {
3636                                 char buf[sizeof("rid=999 non")];
3637
3638                                 snprintf( buf, sizeof(buf), "%s %s", si->si_ridtxt,
3639                                         present_uuid ? "" : "non" );
3640
3641                                 Debug( LDAP_DEBUG_SYNC, "nonpresent_callback: %spresent UUID %s, dn %s\n",
3642                                         buf, a ? a->a_vals[0].bv_val : "<missing>", rs->sr_entry->e_name.bv_val );
3643                         }
3644
3645                         if ( a == NULL ) return 0;
3646                 }
3647
3648                 if ( present_uuid == NULL ) {
3649                         np_entry = (struct nonpresent_entry *)
3650                                 ch_calloc( 1, sizeof( struct nonpresent_entry ) );
3651                         np_entry->npe_name = ber_dupbv( NULL, &rs->sr_entry->e_name );
3652                         np_entry->npe_nname = ber_dupbv( NULL, &rs->sr_entry->e_nname );
3653                         LDAP_LIST_INSERT_HEAD( &si->si_nonpresentlist, np_entry, npe_link );
3654
3655                 } else {
3656                         avl_delete( &si->si_presentlist,
3657                                 &a->a_nvals[0], syncuuid_cmp );
3658                         ch_free( present_uuid );
3659                 }
3660         }
3661         return LDAP_SUCCESS;
3662 }
3663
3664 static int
3665 null_callback(
3666         Operation*      op,
3667         SlapReply*      rs )
3668 {
3669         if ( rs->sr_err != LDAP_SUCCESS &&
3670                 rs->sr_err != LDAP_REFERRAL &&
3671                 rs->sr_err != LDAP_ALREADY_EXISTS &&
3672                 rs->sr_err != LDAP_NO_SUCH_OBJECT &&
3673                 rs->sr_err != LDAP_NOT_ALLOWED_ON_NONLEAF )
3674         {
3675                 Debug( LDAP_DEBUG_ANY,
3676                         "null_callback : error code 0x%x\n",
3677                         rs->sr_err, 0, 0 );
3678         }
3679         return LDAP_SUCCESS;
3680 }
3681
3682 static struct berval *
3683 slap_uuidstr_from_normalized(
3684         struct berval* uuidstr,
3685         struct berval* normalized,
3686         void *ctx )
3687 {
3688 #if 0
3689         struct berval *new;
3690         unsigned char nibble;
3691         int i, d = 0;
3692
3693         if ( normalized == NULL ) return NULL;
3694         if ( normalized->bv_len != 16 ) return NULL;
3695
3696         if ( uuidstr ) {
3697                 new = uuidstr;
3698         } else {
3699                 new = (struct berval *)slap_sl_malloc( sizeof(struct berval), ctx );
3700                 if ( new == NULL ) {
3701                         return NULL;
3702                 }
3703         }
3704
3705         new->bv_len = 36;
3706
3707         if ( ( new->bv_val = slap_sl_malloc( new->bv_len + 1, ctx ) ) == NULL ) {
3708                 if ( new != uuidstr ) {
3709                         slap_sl_free( new, ctx );
3710                 }
3711                 return NULL;
3712         }
3713
3714         for ( i = 0; i < 16; i++ ) {
3715                 if ( i == 4 || i == 6 || i == 8 || i == 10 ) {
3716                         new->bv_val[(i<<1)+d] = '-';
3717                         d += 1;
3718                 }
3719
3720                 nibble = (normalized->bv_val[i] >> 4) & 0xF;
3721                 if ( nibble < 10 ) {
3722                         new->bv_val[(i<<1)+d] = nibble + '0';
3723                 } else {
3724                         new->bv_val[(i<<1)+d] = nibble - 10 + 'a';
3725                 }
3726
3727                 nibble = (normalized->bv_val[i]) & 0xF;
3728                 if ( nibble < 10 ) {
3729                         new->bv_val[(i<<1)+d+1] = nibble + '0';
3730                 } else {
3731                         new->bv_val[(i<<1)+d+1] = nibble - 10 + 'a';
3732                 }
3733         }
3734
3735         new->bv_val[new->bv_len] = '\0';
3736         return new;
3737 #endif
3738
3739         struct berval   *new;
3740         int             rc = 0;
3741
3742         if ( normalized == NULL ) return NULL;
3743         if ( normalized->bv_len != 16 ) return NULL;
3744
3745         if ( uuidstr ) {
3746                 new = uuidstr;
3747
3748         } else {
3749                 new = (struct berval *)slap_sl_malloc( sizeof(struct berval), ctx );
3750                 if ( new == NULL ) {
3751                         return NULL;
3752                 }
3753         }
3754
3755         new->bv_len = 36;
3756
3757         if ( ( new->bv_val = slap_sl_malloc( new->bv_len + 1, ctx ) ) == NULL ) {
3758                 rc = 1;
3759                 goto done;
3760         }
3761
3762         rc = lutil_uuidstr_from_normalized( normalized->bv_val,
3763                 normalized->bv_len, new->bv_val, new->bv_len + 1 );
3764
3765 done:;
3766         if ( rc == -1 ) {
3767                 if ( new != NULL ) {
3768                         if ( new->bv_val != NULL ) {
3769                                 slap_sl_free( new->bv_val, ctx );
3770                         }
3771
3772                         if ( new != uuidstr ) {
3773                                 slap_sl_free( new, ctx );
3774                         }
3775                 }
3776                 new = NULL;
3777
3778         } else {
3779                 new->bv_len = rc;
3780         }
3781
3782         return new;
3783 }
3784
3785 static int
3786 syncuuid_cmp( const void* v_uuid1, const void* v_uuid2 )
3787 {
3788         const struct berval *uuid1 = v_uuid1;
3789         const struct berval *uuid2 = v_uuid2;
3790         int rc = uuid1->bv_len - uuid2->bv_len;
3791         if ( rc ) return rc;
3792         return ( memcmp( uuid1->bv_val, uuid2->bv_val, uuid1->bv_len ) );
3793 }
3794
3795 void
3796 syncinfo_free( syncinfo_t *sie, int free_all )
3797 {
3798         syncinfo_t *si_next;
3799
3800         Debug( LDAP_DEBUG_TRACE, "syncinfo_free: %s\n",
3801                 sie->si_ridtxt, 0, 0 );
3802
3803         do {
3804                 si_next = sie->si_next;
3805
3806                 if ( sie->si_ld ) {
3807                         if ( sie->si_conn ) {
3808                                 connection_client_stop( sie->si_conn );
3809                                 sie->si_conn = NULL;
3810                         }
3811                         ldap_unbind_ext( sie->si_ld, NULL, NULL );
3812                 }
3813
3814                 if ( sie->si_re ) {
3815                         struct re_s             *re = sie->si_re;
3816                         sie->si_re = NULL;
3817
3818                         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
3819                         if ( ldap_pvt_runqueue_isrunning( &slapd_rq, re ) )
3820                                 ldap_pvt_runqueue_stoptask( &slapd_rq, re );
3821                         ldap_pvt_runqueue_remove( &slapd_rq, re );
3822                         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
3823                 }
3824
3825                 ldap_pvt_thread_mutex_destroy( &sie->si_mutex );
3826
3827                 bindconf_free( &sie->si_bindconf );
3828
3829                 if ( sie->si_filterstr.bv_val ) {
3830                         ch_free( sie->si_filterstr.bv_val );
3831                 }
3832                 if ( sie->si_filter ) {
3833                         filter_free( sie->si_filter );
3834                 }
3835                 if ( sie->si_logfilterstr.bv_val ) {
3836                         ch_free( sie->si_logfilterstr.bv_val );
3837                 }
3838                 if ( sie->si_base.bv_val ) {
3839                         ch_free( sie->si_base.bv_val );
3840                 }
3841                 if ( sie->si_logbase.bv_val ) {
3842                         ch_free( sie->si_logbase.bv_val );
3843                 }
3844                 if ( sie->si_be && SLAP_SYNC_SUBENTRY( sie->si_be )) {
3845                         ch_free( sie->si_contextdn.bv_val );
3846                 }
3847                 if ( sie->si_attrs ) {
3848                         int i = 0;
3849                         while ( sie->si_attrs[i] != NULL ) {
3850                                 ch_free( sie->si_attrs[i] );
3851                                 i++;
3852                         }
3853                         ch_free( sie->si_attrs );
3854                 }
3855                 if ( sie->si_exattrs ) {
3856                         int i = 0;
3857                         while ( sie->si_exattrs[i] != NULL ) {
3858                                 ch_free( sie->si_exattrs[i] );
3859                                 i++;
3860                         }
3861                         ch_free( sie->si_exattrs );
3862                 }
3863                 if ( sie->si_anlist ) {
3864                         int i = 0;
3865                         while ( sie->si_anlist[i].an_name.bv_val != NULL ) {
3866                                 ch_free( sie->si_anlist[i].an_name.bv_val );
3867                                 i++;
3868                         }
3869                         ch_free( sie->si_anlist );
3870                 }
3871                 if ( sie->si_exanlist ) {
3872                         int i = 0;
3873                         while ( sie->si_exanlist[i].an_name.bv_val != NULL ) {
3874                                 ch_free( sie->si_exanlist[i].an_name.bv_val );
3875                                 i++;
3876                         }
3877                         ch_free( sie->si_exanlist );
3878                 }
3879                 if ( sie->si_retryinterval ) {
3880                         ch_free( sie->si_retryinterval );
3881                 }
3882                 if ( sie->si_retrynum ) {
3883                         ch_free( sie->si_retrynum );
3884                 }
3885                 if ( sie->si_retrynum_init ) {
3886                         ch_free( sie->si_retrynum_init );
3887                 }
3888                 slap_sync_cookie_free( &sie->si_syncCookie, 0 );
3889                 if ( sie->si_presentlist ) {
3890                     avl_free( sie->si_presentlist, ch_free );
3891                 }
3892                 while ( !LDAP_LIST_EMPTY( &sie->si_nonpresentlist ) ) {
3893                         struct nonpresent_entry* npe;
3894                         npe = LDAP_LIST_FIRST( &sie->si_nonpresentlist );
3895                         LDAP_LIST_REMOVE( npe, npe_link );
3896                         if ( npe->npe_name ) {
3897                                 if ( npe->npe_name->bv_val ) {
3898                                         ch_free( npe->npe_name->bv_val );
3899                                 }
3900                                 ch_free( npe->npe_name );
3901                         }
3902                         if ( npe->npe_nname ) {
3903                                 if ( npe->npe_nname->bv_val ) {
3904                                         ch_free( npe->npe_nname->bv_val );
3905                                 }
3906                                 ch_free( npe->npe_nname );
3907                         }
3908                         ch_free( npe );
3909                 }
3910                 if ( sie->si_cookieState ) {
3911                         sie->si_cookieState->cs_ref--;
3912                         if ( !sie->si_cookieState->cs_ref ) {
3913                                 ch_free( sie->si_cookieState->cs_sids );
3914                                 ber_bvarray_free( sie->si_cookieState->cs_vals );
3915                                 ldap_pvt_thread_mutex_destroy( &sie->si_cookieState->cs_mutex );
3916                                 ch_free( sie->si_cookieState->cs_psids );
3917                                 ber_bvarray_free( sie->si_cookieState->cs_pvals );
3918                                 ldap_pvt_thread_mutex_destroy( &sie->si_cookieState->cs_pmutex );
3919                                 ch_free( sie->si_cookieState );
3920                         }
3921                 }
3922                 ch_free( sie );
3923                 sie = si_next;
3924         } while ( free_all && si_next );
3925 }
3926
3927
3928
3929 /* NOTE: used & documented in slapd.conf(5) */
3930 #define IDSTR                   "rid"
3931 #define PROVIDERSTR             "provider"
3932 #define SCHEMASTR               "schemachecking"
3933 #define FILTERSTR               "filter"
3934 #define SEARCHBASESTR           "searchbase"
3935 #define SCOPESTR                "scope"
3936 #define ATTRSONLYSTR            "attrsonly"
3937 #define ATTRSSTR                "attrs"
3938 #define TYPESTR                 "type"
3939 #define INTERVALSTR             "interval"
3940 #define RETRYSTR                "retry"
3941 #define SLIMITSTR               "sizelimit"
3942 #define TLIMITSTR               "timelimit"
3943 #define SYNCDATASTR             "syncdata"
3944 #define LOGBASESTR              "logbase"
3945 #define LOGFILTERSTR    "logfilter"
3946
3947 /* FIXME: undocumented */
3948 #define EXATTRSSTR              "exattrs"
3949 #define MANAGEDSAITSTR          "manageDSAit"
3950
3951 /* mandatory */
3952 enum {
3953         GOT_RID                 = 0x00000001U,
3954         GOT_PROVIDER            = 0x00000002U,
3955         GOT_SCHEMACHECKING      = 0x00000004U,
3956         GOT_FILTER              = 0x00000008U,
3957         GOT_SEARCHBASE          = 0x00000010U,
3958         GOT_SCOPE               = 0x00000020U,
3959         GOT_ATTRSONLY           = 0x00000040U,
3960         GOT_ATTRS               = 0x00000080U,
3961         GOT_TYPE                = 0x00000100U,
3962         GOT_INTERVAL            = 0x00000200U,
3963         GOT_RETRY               = 0x00000400U,
3964         GOT_SLIMIT              = 0x00000800U,
3965         GOT_TLIMIT              = 0x00001000U,
3966         GOT_SYNCDATA            = 0x00002000U,
3967         GOT_LOGBASE             = 0x00004000U,
3968         GOT_LOGFILTER           = 0x00008000U,
3969         GOT_EXATTRS             = 0x00010000U,
3970         GOT_MANAGEDSAIT         = 0x00020000U,
3971         GOT_BINDCONF            = 0x00040000U,
3972
3973 /* check */
3974         GOT_REQUIRED            = (GOT_RID|GOT_PROVIDER|GOT_SEARCHBASE)
3975 };
3976
3977 static slap_verbmasks datamodes[] = {
3978         { BER_BVC("default"), SYNCDATA_DEFAULT },
3979         { BER_BVC("accesslog"), SYNCDATA_ACCESSLOG },
3980         { BER_BVC("changelog"), SYNCDATA_CHANGELOG },
3981         { BER_BVNULL, 0 }
3982 };
3983
3984 static int
3985 parse_syncrepl_retry(
3986         ConfigArgs      *c,
3987         char            *arg,
3988         syncinfo_t      *si )
3989 {
3990         char **retry_list;
3991         int j, k, n;
3992         int use_default = 0;
3993
3994         char *val = arg + STRLENOF( RETRYSTR "=" );
3995         if ( strcasecmp( val, "undefined" ) == 0 ) {
3996                 val = "3600 +";
3997                 use_default = 1;
3998         }
3999
4000         retry_list = (char **) ch_calloc( 1, sizeof( char * ) );
4001         retry_list[0] = NULL;
4002
4003         slap_str2clist( &retry_list, val, " ,\t" );
4004
4005         for ( k = 0; retry_list && retry_list[k]; k++ ) ;
4006         n = k / 2;
4007         if ( k % 2 ) {
4008                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4009                         "Error: incomplete syncrepl retry list" );
4010                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4011                 for ( k = 0; retry_list && retry_list[k]; k++ ) {
4012                         ch_free( retry_list[k] );
4013                 }
4014                 ch_free( retry_list );
4015                 return 1;
4016         }
4017         si->si_retryinterval = (time_t *) ch_calloc( n + 1, sizeof( time_t ) );
4018         si->si_retrynum = (int *) ch_calloc( n + 1, sizeof( int ) );
4019         si->si_retrynum_init = (int *) ch_calloc( n + 1, sizeof( int ) );
4020         for ( j = 0; j < n; j++ ) {
4021                 unsigned long   t;
4022                 if ( lutil_atoul( &t, retry_list[j*2] ) != 0 ) {
4023                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
4024                                 "Error: invalid retry interval \"%s\" (#%d)",
4025                                 retry_list[j*2], j );
4026                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4027                         /* do some cleanup */
4028                         return 1;
4029                 }
4030                 si->si_retryinterval[j] = (time_t)t;
4031                 if ( *retry_list[j*2+1] == '+' ) {
4032                         si->si_retrynum_init[j] = RETRYNUM_FOREVER;
4033                         si->si_retrynum[j] = RETRYNUM_FOREVER;
4034                         j++;
4035                         break;
4036                 } else {
4037                         if ( lutil_atoi( &si->si_retrynum_init[j], retry_list[j*2+1] ) != 0
4038                                         || si->si_retrynum_init[j] <= 0 )
4039                         {
4040                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4041                                         "Error: invalid initial retry number \"%s\" (#%d)",
4042                                         retry_list[j*2+1], j );
4043                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4044                                 /* do some cleanup */
4045                                 return 1;
4046                         }
4047                         if ( lutil_atoi( &si->si_retrynum[j], retry_list[j*2+1] ) != 0
4048                                         || si->si_retrynum[j] <= 0 )
4049                         {
4050                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4051                                         "Error: invalid retry number \"%s\" (#%d)",
4052                                         retry_list[j*2+1], j );
4053                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4054                                 /* do some cleanup */
4055                                 return 1;
4056                         }
4057                 }
4058         }
4059         if ( j < 1 || si->si_retrynum_init[j-1] != RETRYNUM_FOREVER ) {
4060                 Debug( LDAP_DEBUG_CONFIG,
4061                         "%s: syncrepl will eventually stop retrying; the \"retry\" parameter should end with a '+'.\n",
4062                         c->log, 0, 0 );
4063         }
4064
4065         si->si_retrynum_init[j] = RETRYNUM_TAIL;
4066         si->si_retrynum[j] = RETRYNUM_TAIL;
4067         si->si_retryinterval[j] = 0;
4068
4069         for ( k = 0; retry_list && retry_list[k]; k++ ) {
4070                 ch_free( retry_list[k] );
4071         }
4072         ch_free( retry_list );
4073         if ( !use_default ) {
4074                 si->si_got |= GOT_RETRY;
4075         }
4076
4077         return 0;
4078 }
4079
4080 static int
4081 parse_syncrepl_line(
4082         ConfigArgs      *c,
4083         syncinfo_t      *si )
4084 {
4085         int     i;
4086         char    *val;
4087
4088         for ( i = 1; i < c->argc; i++ ) {
4089                 if ( !strncasecmp( c->argv[ i ], IDSTR "=",
4090                                         STRLENOF( IDSTR "=" ) ) )
4091                 {
4092                         int tmp;
4093                         /* '\0' string terminator accounts for '=' */
4094                         val = c->argv[ i ] + STRLENOF( IDSTR "=" );
4095                         if ( lutil_atoi( &tmp, val ) != 0 ) {
4096                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4097                                         "Error: parse_syncrepl_line: "
4098                                         "unable to parse syncrepl id \"%s\"", val );
4099                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4100                                 return -1;
4101                         }
4102                         if ( tmp > SLAP_SYNC_RID_MAX || tmp < 0 ) {
4103                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4104                                         "Error: parse_syncrepl_line: "
4105                                         "syncrepl id %d is out of range [0..%d]", tmp, SLAP_SYNC_RID_MAX );
4106                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4107                                 return -1;
4108                         }
4109                         si->si_rid = tmp;
4110                         sprintf( si->si_ridtxt, IDSTR "=%03d", si->si_rid );
4111                         si->si_got |= GOT_RID;
4112                 } else if ( !strncasecmp( c->argv[ i ], PROVIDERSTR "=",
4113                                         STRLENOF( PROVIDERSTR "=" ) ) )
4114                 {
4115                         val = c->argv[ i ] + STRLENOF( PROVIDERSTR "=" );
4116                         ber_str2bv( val, 0, 1, &si->si_bindconf.sb_uri );
4117 #ifdef HAVE_TLS
4118                         if ( ldap_is_ldaps_url( val ))
4119                                 si->si_bindconf.sb_tls_do_init = 1;
4120 #endif
4121                         si->si_got |= GOT_PROVIDER;
4122                 } else if ( !strncasecmp( c->argv[ i ], SCHEMASTR "=",
4123                                         STRLENOF( SCHEMASTR "=" ) ) )
4124                 {
4125                         val = c->argv[ i ] + STRLENOF( SCHEMASTR "=" );
4126                         if ( !strncasecmp( val, "on", STRLENOF( "on" ) ) ) {
4127                                 si->si_schemachecking = 1;
4128                         } else if ( !strncasecmp( val, "off", STRLENOF( "off" ) ) ) {
4129                                 si->si_schemachecking = 0;
4130                         } else {
4131                                 si->si_schemachecking = 1;
4132                         }
4133                         si->si_got |= GOT_SCHEMACHECKING;
4134                 } else if ( !strncasecmp( c->argv[ i ], FILTERSTR "=",
4135                                         STRLENOF( FILTERSTR "=" ) ) )
4136                 {
4137                         val = c->argv[ i ] + STRLENOF( FILTERSTR "=" );
4138                         if ( si->si_filterstr.bv_val )
4139                                 ch_free( si->si_filterstr.bv_val );
4140                         ber_str2bv( val, 0, 1, &si->si_filterstr );
4141                         si->si_got |= GOT_FILTER;
4142                 } else if ( !strncasecmp( c->argv[ i ], LOGFILTERSTR "=",
4143                                         STRLENOF( LOGFILTERSTR "=" ) ) )
4144                 {
4145                         val = c->argv[ i ] + STRLENOF( LOGFILTERSTR "=" );
4146                         if ( si->si_logfilterstr.bv_val )
4147                                 ch_free( si->si_logfilterstr.bv_val );
4148                         ber_str2bv( val, 0, 1, &si->si_logfilterstr );
4149                         si->si_got |= GOT_LOGFILTER;
4150                 } else if ( !strncasecmp( c->argv[ i ], SEARCHBASESTR "=",
4151                                         STRLENOF( SEARCHBASESTR "=" ) ) )
4152                 {
4153                         struct berval   bv;
4154                         int             rc;
4155
4156                         val = c->argv[ i ] + STRLENOF( SEARCHBASESTR "=" );
4157                         if ( si->si_base.bv_val ) {
4158                                 ch_free( si->si_base.bv_val );
4159                         }
4160                         ber_str2bv( val, 0, 0, &bv );
4161                         rc = dnNormalize( 0, NULL, NULL, &bv, &si->si_base, NULL );
4162                         if ( rc != LDAP_SUCCESS ) {
4163                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4164                                         "Invalid base DN \"%s\": %d (%s)",
4165                                         val, rc, ldap_err2string( rc ) );
4166                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4167                                 return -1;
4168                         }
4169                         if ( !be_issubordinate( c->be, &si->si_base ) ) {
4170                                 ch_free( si->si_base.bv_val );
4171                                 BER_BVZERO( &si->si_base );
4172                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4173                                         "Base DN \"%s\" is not within the database naming context",
4174                                         val );
4175                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4176                                 return -1;
4177                         }
4178                         si->si_got |= GOT_SEARCHBASE;
4179                 } else if ( !strncasecmp( c->argv[ i ], LOGBASESTR "=",
4180                                         STRLENOF( LOGBASESTR "=" ) ) )
4181                 {
4182                         struct berval   bv;
4183                         int             rc;
4184
4185                         val = c->argv[ i ] + STRLENOF( LOGBASESTR "=" );
4186                         if ( si->si_logbase.bv_val ) {
4187                                 ch_free( si->si_logbase.bv_val );
4188                         }
4189                         ber_str2bv( val, 0, 0, &bv );
4190                         rc = dnNormalize( 0, NULL, NULL, &bv, &si->si_logbase, NULL );
4191                         if ( rc != LDAP_SUCCESS ) {
4192                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4193                                         "Invalid logbase DN \"%s\": %d (%s)",
4194                                         val, rc, ldap_err2string( rc ) );
4195                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4196                                 return -1;
4197                         }
4198                         si->si_got |= GOT_LOGBASE;
4199                 } else if ( !strncasecmp( c->argv[ i ], SCOPESTR "=",
4200                                         STRLENOF( SCOPESTR "=" ) ) )
4201                 {
4202                         int j;
4203                         val = c->argv[ i ] + STRLENOF( SCOPESTR "=" );
4204                         j = ldap_pvt_str2scope( val );
4205                         if ( j < 0 ) {
4206                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4207                                         "Error: parse_syncrepl_line: "
4208                                         "unknown scope \"%s\"", val);
4209                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4210                                 return -1;
4211                         }
4212                         si->si_scope = j;
4213                         si->si_got |= GOT_SCOPE;
4214                 } else if ( !strncasecmp( c->argv[ i ], ATTRSONLYSTR,
4215                                         STRLENOF( ATTRSONLYSTR ) ) )
4216                 {
4217                         si->si_attrsonly = 1;
4218                         si->si_got |= GOT_ATTRSONLY;
4219                 } else if ( !strncasecmp( c->argv[ i ], ATTRSSTR "=",
4220                                         STRLENOF( ATTRSSTR "=" ) ) )
4221                 {
4222                         val = c->argv[ i ] + STRLENOF( ATTRSSTR "=" );
4223                         if ( !strncasecmp( val, ":include:", STRLENOF(":include:") ) ) {
4224                                 char *attr_fname;
4225                                 attr_fname = ch_strdup( val + STRLENOF(":include:") );
4226                                 si->si_anlist = file2anlist( si->si_anlist, attr_fname, " ,\t" );
4227                                 if ( si->si_anlist == NULL ) {
4228                                         ch_free( attr_fname );
4229                                         return -1;
4230                                 }
4231                                 si->si_anfile = attr_fname;
4232                         } else {
4233                                 char *str, *s, *next;
4234                                 const char *delimstr = " ,\t";
4235                                 str = ch_strdup( val );
4236                                 for ( s = ldap_pvt_strtok( str, delimstr, &next );
4237                                                 s != NULL;
4238                                                 s = ldap_pvt_strtok( NULL, delimstr, &next ) )
4239                                 {
4240                                         if ( strlen(s) == 1 && *s == '*' ) {
4241                                                 si->si_allattrs = 1;
4242                                                 val[ s - str ] = delimstr[0];
4243                                         }
4244                                         if ( strlen(s) == 1 && *s == '+' ) {
4245                                                 si->si_allopattrs = 1;
4246                                                 val [ s - str ] = delimstr[0];
4247                                         }
4248                                 }
4249                                 ch_free( str );
4250                                 si->si_anlist = str2anlist( si->si_anlist, val, " ,\t" );
4251                                 if ( si->si_anlist == NULL ) {
4252                                         return -1;
4253                                 }
4254                         }
4255                         si->si_got |= GOT_ATTRS;
4256                 } else if ( !strncasecmp( c->argv[ i ], EXATTRSSTR "=",
4257                                         STRLENOF( EXATTRSSTR "=" ) ) )
4258                 {
4259                         val = c->argv[ i ] + STRLENOF( EXATTRSSTR "=" );
4260                         if ( !strncasecmp( val, ":include:", STRLENOF(":include:") ) ) {
4261                                 char *attr_fname;
4262                                 attr_fname = ch_strdup( val + STRLENOF(":include:") );
4263                                 si->si_exanlist = file2anlist(
4264                                         si->si_exanlist, attr_fname, " ,\t" );
4265                                 if ( si->si_exanlist == NULL ) {
4266                                         ch_free( attr_fname );
4267                                         return -1;
4268                                 }
4269                                 ch_free( attr_fname );
4270                         } else {
4271                                 si->si_exanlist = str2anlist( si->si_exanlist, val, " ,\t" );
4272                                 if ( si->si_exanlist == NULL ) {
4273                                         return -1;
4274                                 }
4275                         }
4276                         si->si_got |= GOT_EXATTRS;
4277                 } else if ( !strncasecmp( c->argv[ i ], TYPESTR "=",
4278                                         STRLENOF( TYPESTR "=" ) ) )
4279                 {
4280                         val = c->argv[ i ] + STRLENOF( TYPESTR "=" );
4281                         if ( !strncasecmp( val, "refreshOnly",
4282                                                 STRLENOF("refreshOnly") ) )
4283                         {
4284                                 si->si_type = si->si_ctype = LDAP_SYNC_REFRESH_ONLY;
4285                         } else if ( !strncasecmp( val, "refreshAndPersist",
4286                                                 STRLENOF("refreshAndPersist") ) )
4287                         {
4288                                 si->si_type = si->si_ctype = LDAP_SYNC_REFRESH_AND_PERSIST;
4289                                 si->si_interval = 60;
4290                         } else {
4291                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4292                                         "Error: parse_syncrepl_line: "
4293                                         "unknown sync type \"%s\"", val);
4294                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4295                                 return -1;
4296                         }
4297                         si->si_got |= GOT_TYPE;
4298                 } else if ( !strncasecmp( c->argv[ i ], INTERVALSTR "=",
4299                                         STRLENOF( INTERVALSTR "=" ) ) )
4300                 {
4301                         val = c->argv[ i ] + STRLENOF( INTERVALSTR "=" );
4302                         if ( si->si_type == LDAP_SYNC_REFRESH_AND_PERSIST ) {
4303                                 si->si_interval = 0;
4304                         } else if ( strchr( val, ':' ) != NULL ) {
4305                                 char *next, *ptr = val;
4306                                 int dd, hh, mm, ss;
4307
4308                                 dd = strtol( ptr, &next, 10 );
4309                                 if ( next == ptr || next[0] != ':' || dd < 0 ) {
4310                                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
4311                                                 "Error: parse_syncrepl_line: "
4312                                                 "invalid interval \"%s\", unable to parse days", val );
4313                                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4314                                         return -1;
4315                                 }
4316                                 ptr = next + 1;
4317                                 hh = strtol( ptr, &next, 10 );
4318                                 if ( next == ptr || next[0] != ':' || hh < 0 || hh > 24 ) {
4319                                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
4320                                                 "Error: parse_syncrepl_line: "
4321                                                 "invalid interval \"%s\", unable to parse hours", val );
4322                                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4323                                         return -1;
4324                                 }
4325                                 ptr = next + 1;
4326                                 mm = strtol( ptr, &next, 10 );
4327                                 if ( next == ptr || next[0] != ':' || mm < 0 || mm > 60 ) {
4328                                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
4329                                                 "Error: parse_syncrepl_line: "
4330                                                 "invalid interval \"%s\", unable to parse minutes", val );
4331                                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4332                                         return -1;
4333                                 }
4334                                 ptr = next + 1;
4335                                 ss = strtol( ptr, &next, 10 );
4336                                 if ( next == ptr || next[0] != '\0' || ss < 0 || ss > 60 ) {
4337                                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
4338                                                 "Error: parse_syncrepl_line: "
4339                                                 "invalid interval \"%s\", unable to parse seconds", val );
4340                                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4341                                         return -1;
4342                                 }
4343                                 si->si_interval = (( dd * 24 + hh ) * 60 + mm ) * 60 + ss;
4344                         } else {
4345                                 unsigned long   t;
4346
4347                                 if ( lutil_parse_time( val, &t ) != 0 ) {
4348                                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
4349                                                 "Error: parse_syncrepl_line: "
4350                                                 "invalid interval \"%s\"", val );
4351                                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4352                                         return -1;
4353                                 }
4354                                 si->si_interval = (time_t)t;
4355                         }
4356                         if ( si->si_interval < 0 ) {
4357                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4358                                         "Error: parse_syncrepl_line: "
4359                                         "invalid interval \"%ld\"",
4360                                         (long) si->si_interval);
4361                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4362                                 return -1;
4363                         }
4364                         si->si_got |= GOT_INTERVAL;
4365                 } else if ( !strncasecmp( c->argv[ i ], RETRYSTR "=",
4366                                         STRLENOF( RETRYSTR "=" ) ) )
4367                 {
4368                         if ( parse_syncrepl_retry( c, c->argv[ i ], si ) ) {
4369                                 return 1;
4370                         }
4371                 } else if ( !strncasecmp( c->argv[ i ], MANAGEDSAITSTR "=",
4372                                         STRLENOF( MANAGEDSAITSTR "=" ) ) )
4373                 {
4374                         val = c->argv[ i ] + STRLENOF( MANAGEDSAITSTR "=" );
4375                         if ( lutil_atoi( &si->si_manageDSAit, val ) != 0
4376                                 || si->si_manageDSAit < 0 || si->si_manageDSAit > 1 )
4377                         {
4378                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4379                                         "invalid manageDSAit value \"%s\".\n",
4380                                         val );
4381                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4382                                 return 1;
4383                         }
4384                         si->si_got |= GOT_MANAGEDSAIT;
4385                 } else if ( !strncasecmp( c->argv[ i ], SLIMITSTR "=",
4386                                         STRLENOF( SLIMITSTR "=") ) )
4387                 {
4388                         val = c->argv[ i ] + STRLENOF( SLIMITSTR "=" );
4389                         if ( strcasecmp( val, "unlimited" ) == 0 ) {
4390                                 si->si_slimit = 0;
4391
4392                         } else if ( lutil_atoi( &si->si_slimit, val ) != 0 || si->si_slimit < 0 ) {
4393                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4394                                         "invalid size limit value \"%s\".\n",
4395                                         val );
4396                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4397                                 return 1;
4398                         }
4399                         si->si_got |= GOT_SLIMIT;
4400                 } else if ( !strncasecmp( c->argv[ i ], TLIMITSTR "=",
4401                                         STRLENOF( TLIMITSTR "=" ) ) )
4402                 {
4403                         val = c->argv[ i ] + STRLENOF( TLIMITSTR "=" );
4404                         if ( strcasecmp( val, "unlimited" ) == 0 ) {
4405                                 si->si_tlimit = 0;
4406
4407                         } else if ( lutil_atoi( &si->si_tlimit, val ) != 0 || si->si_tlimit < 0 ) {
4408                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4409                                         "invalid time limit value \"%s\".\n",
4410                                         val );
4411                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4412                                 return 1;
4413                         }
4414                         si->si_got |= GOT_TLIMIT;
4415                 } else if ( !strncasecmp( c->argv[ i ], SYNCDATASTR "=",
4416                                         STRLENOF( SYNCDATASTR "=" ) ) )
4417                 {
4418                         val = c->argv[ i ] + STRLENOF( SYNCDATASTR "=" );
4419                         si->si_syncdata = verb_to_mask( val, datamodes );
4420                         si->si_got |= GOT_SYNCDATA;
4421                 } else if ( bindconf_parse( c->argv[i], &si->si_bindconf ) ) {
4422                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
4423                                 "Error: parse_syncrepl_line: "
4424                                 "unable to parse \"%s\"\n", c->argv[ i ] );
4425                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4426                         return -1;
4427                 }
4428                 si->si_got |= GOT_BINDCONF;
4429         }
4430
4431         if ( ( si->si_got & GOT_REQUIRED ) != GOT_REQUIRED ) {
4432                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4433                         "Error: Malformed \"syncrepl\" line in slapd config file, missing%s%s%s",
4434                         si->si_got & GOT_RID ? "" : " "IDSTR,
4435                         si->si_got & GOT_PROVIDER ? "" : " "PROVIDERSTR,
4436                         si->si_got & GOT_SEARCHBASE ? "" : " "SEARCHBASESTR );
4437                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4438                 return -1;
4439         }
4440
4441         if ( !( si->si_got & GOT_RETRY ) ) {
4442                 Debug( LDAP_DEBUG_ANY, "syncrepl %s " SEARCHBASESTR "=\"%s\": no retry defined, using default\n",
4443                         si->si_ridtxt, c->be->be_suffix ? c->be->be_suffix[ 0 ].bv_val : "(null)", 0 );
4444                 if ( si->si_retryinterval == NULL ) {
4445                         if ( parse_syncrepl_retry( c, "retry=undefined", si ) ) {
4446                                 return 1;
4447                         }
4448                 }
4449         }
4450
4451         si->si_filter = str2filter( si->si_filterstr.bv_val );
4452         if ( si->si_filter == NULL ) {
4453                 Debug( LDAP_DEBUG_ANY, "syncrepl %s " SEARCHBASESTR "=\"%s\": unable to parse filter=\"%s\"\n",
4454                         si->si_ridtxt, c->be->be_suffix ? c->be->be_suffix[ 0 ].bv_val : "(null)", si->si_filterstr.bv_val );
4455                 return 1;
4456         }
4457
4458         return 0;
4459 }
4460
4461 static int
4462 add_syncrepl(
4463         ConfigArgs *c )
4464 {
4465         syncinfo_t *si;
4466         int     rc = 0;
4467
4468         if ( !( c->be->be_search && c->be->be_add && c->be->be_modify && c->be->be_delete ) ) {
4469                 snprintf( c->cr_msg, sizeof(c->cr_msg), "database %s does not support "
4470                         "operations required for syncrepl", c->be->be_type );
4471                 Debug( LDAP_DEBUG_ANY, "%s: %s\n", c->log, c->cr_msg, 0 );
4472                 return 1;
4473         }
4474         if ( BER_BVISEMPTY( &c->be->be_rootdn ) ) {
4475                 strcpy( c->cr_msg, "rootDN must be defined before syncrepl may be used" );
4476                 Debug( LDAP_DEBUG_ANY, "%s: %s\n", c->log, c->cr_msg, 0 );
4477                 return 1;
4478         }
4479         si = (syncinfo_t *) ch_calloc( 1, sizeof( syncinfo_t ) );
4480
4481         if ( si == NULL ) {
4482                 Debug( LDAP_DEBUG_ANY, "out of memory in add_syncrepl\n", 0, 0, 0 );
4483                 return 1;
4484         }
4485
4486         si->si_bindconf.sb_tls = SB_TLS_OFF;
4487         si->si_bindconf.sb_method = LDAP_AUTH_SIMPLE;
4488         si->si_schemachecking = 0;
4489         ber_str2bv( "(objectclass=*)", STRLENOF("(objectclass=*)"), 1,
4490                 &si->si_filterstr );
4491         si->si_base.bv_val = NULL;
4492         si->si_scope = LDAP_SCOPE_SUBTREE;
4493         si->si_attrsonly = 0;
4494         si->si_anlist = (AttributeName *) ch_calloc( 1, sizeof( AttributeName ) );
4495         si->si_exanlist = (AttributeName *) ch_calloc( 1, sizeof( AttributeName ) );
4496         si->si_attrs = NULL;
4497         si->si_allattrs = 0;
4498         si->si_allopattrs = 0;
4499         si->si_exattrs = NULL;
4500         si->si_type = si->si_ctype = LDAP_SYNC_REFRESH_ONLY;
4501         si->si_interval = 86400;
4502         si->si_retryinterval = NULL;
4503         si->si_retrynum_init = NULL;
4504         si->si_retrynum = NULL;
4505         si->si_manageDSAit = 0;
4506         si->si_tlimit = 0;
4507         si->si_slimit = 0;
4508
4509         si->si_presentlist = NULL;
4510         LDAP_LIST_INIT( &si->si_nonpresentlist );
4511         ldap_pvt_thread_mutex_init( &si->si_mutex );
4512
4513         rc = parse_syncrepl_line( c, si );
4514
4515         if ( rc == 0 ) {
4516                 LDAPURLDesc *lud;
4517
4518                 /* Must be LDAPv3 because we need controls */
4519                 switch ( si->si_bindconf.sb_version ) {
4520                 case 0:
4521                         /* not explicitly set */
4522                         si->si_bindconf.sb_version = LDAP_VERSION3;
4523                         break;
4524                 case 3:
4525                         /* explicitly set */
4526                         break;
4527                 default:
4528                         Debug( LDAP_DEBUG_ANY,
4529                                 "version %d incompatible with syncrepl\n",
4530                                 si->si_bindconf.sb_version, 0, 0 );
4531                         syncinfo_free( si, 0 );
4532                         return 1;
4533                 }
4534
4535                 if ( ldap_url_parse( si->si_bindconf.sb_uri.bv_val, &lud )) {
4536                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
4537                                 "<%s> invalid URL", c->argv[0] );
4538                         Debug( LDAP_DEBUG_ANY, "%s: %s %s\n",
4539                                 c->log, c->cr_msg, si->si_bindconf.sb_uri.bv_val );
4540                         return 1;
4541                 }
4542
4543                 si->si_be = c->be;
4544                 if ( slapMode & SLAP_SERVER_MODE ) {
4545                         int isMe = 0;
4546                         /* check if consumer points to current server and database.
4547                          * If so, ignore this configuration.
4548                          */
4549                         if ( !SLAP_DBHIDDEN( c->be ) ) {
4550                                 int i;
4551                                 /* if searchbase doesn't match current DB suffix,
4552                                  * assume it's different
4553                                  */
4554                                 for ( i=0; !BER_BVISNULL( &c->be->be_nsuffix[i] ); i++ ) {
4555                                         if ( bvmatch( &si->si_base, &c->be->be_nsuffix[i] )) {
4556                                                 isMe = 1;
4557                                                 break;
4558                                         }
4559                                 }
4560                                 /* if searchbase matches, see if URLs match */
4561                                 if ( isMe && config_check_my_url( si->si_bindconf.sb_uri.bv_val,
4562                                                 lud ) == NULL )
4563                                         isMe = 0;
4564                         }
4565
4566                         if ( !isMe ) {
4567                                 init_syncrepl( si );
4568                                 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
4569                                 si->si_re = ldap_pvt_runqueue_insert( &slapd_rq,
4570                                         si->si_interval, do_syncrepl, si, "do_syncrepl",
4571                                         si->si_ridtxt );
4572                                 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
4573                                 if ( si->si_re )
4574                                         rc = config_sync_shadow( c ) ? -1 : 0;
4575                                 else
4576                                         rc = -1;
4577                         }
4578                 } else {
4579                         /* mirrormode still needs to see this flag in tool mode */
4580                         rc = config_sync_shadow( c ) ? -1 : 0;
4581                 }
4582                 ldap_free_urldesc( lud );
4583         }
4584
4585 #ifdef HAVE_TLS
4586         /* Use main slapd defaults */
4587         bindconf_tls_defaults( &si->si_bindconf );
4588 #endif
4589         if ( rc < 0 ) {
4590                 Debug( LDAP_DEBUG_ANY, "failed to add syncinfo\n", 0, 0, 0 );
4591                 syncinfo_free( si, 0 );
4592                 return 1;
4593         } else {
4594                 Debug( LDAP_DEBUG_CONFIG,
4595                         "Config: ** successfully added syncrepl %s \"%s\"\n",
4596                         si->si_ridtxt,
4597                         BER_BVISNULL( &si->si_bindconf.sb_uri ) ?
4598                         "(null)" : si->si_bindconf.sb_uri.bv_val, 0 );
4599                 if ( c->be->be_syncinfo ) {
4600                         syncinfo_t *sip;
4601
4602                         si->si_cookieState = c->be->be_syncinfo->si_cookieState;
4603
4604                         /* add new syncrepl to end of list (same order as when deleting) */
4605                         for ( sip = c->be->be_syncinfo; sip->si_next; sip = sip->si_next );
4606                         sip->si_next = si;
4607                 } else {
4608                         si->si_cookieState = ch_calloc( 1, sizeof( cookie_state ));
4609                         ldap_pvt_thread_mutex_init( &si->si_cookieState->cs_mutex );
4610                         ldap_pvt_thread_mutex_init( &si->si_cookieState->cs_pmutex );
4611
4612                         c->be->be_syncinfo = si;
4613                 }
4614                 si->si_cookieState->cs_ref++;
4615
4616                 si->si_next = NULL;
4617
4618                 return 0;
4619         }
4620 }
4621
4622 static void
4623 syncrepl_unparse( syncinfo_t *si, struct berval *bv )
4624 {
4625         struct berval bc, uri, bs;
4626         char buf[BUFSIZ*2], *ptr;
4627         ber_len_t len;
4628         int i;
4629 #       define WHATSLEFT        ((ber_len_t) (&buf[sizeof( buf )] - ptr))
4630
4631         BER_BVZERO( bv );
4632
4633         /* temporarily inhibit bindconf from printing URI */
4634         uri = si->si_bindconf.sb_uri;
4635         BER_BVZERO( &si->si_bindconf.sb_uri );
4636         si->si_bindconf.sb_version = 0;
4637         bindconf_unparse( &si->si_bindconf, &bc );
4638         si->si_bindconf.sb_uri = uri;
4639         si->si_bindconf.sb_version = LDAP_VERSION3;
4640
4641         ptr = buf;
4642         assert( si->si_rid >= 0 && si->si_rid <= SLAP_SYNC_RID_MAX );
4643         len = snprintf( ptr, WHATSLEFT, IDSTR "=%03d " PROVIDERSTR "=%s",
4644                 si->si_rid, si->si_bindconf.sb_uri.bv_val );
4645         if ( len >= sizeof( buf ) ) return;
4646         ptr += len;
4647         if ( !BER_BVISNULL( &bc ) ) {
4648                 if ( WHATSLEFT <= bc.bv_len ) {
4649                         free( bc.bv_val );
4650                         return;
4651                 }
4652                 ptr = lutil_strcopy( ptr, bc.bv_val );
4653                 free( bc.bv_val );
4654         }
4655         if ( !BER_BVISEMPTY( &si->si_filterstr ) ) {
4656                 if ( WHATSLEFT <= STRLENOF( " " FILTERSTR "=\"" "\"" ) + si->si_filterstr.bv_len ) return;
4657                 ptr = lutil_strcopy( ptr, " " FILTERSTR "=\"" );
4658                 ptr = lutil_strcopy( ptr, si->si_filterstr.bv_val );
4659                 *ptr++ = '"';
4660         }
4661         if ( !BER_BVISNULL( &si->si_base ) ) {
4662                 if ( WHATSLEFT <= STRLENOF( " " SEARCHBASESTR "=\"" "\"" ) + si->si_base.bv_len ) return;
4663                 ptr = lutil_strcopy( ptr, " " SEARCHBASESTR "=\"" );
4664                 ptr = lutil_strcopy( ptr, si->si_base.bv_val );
4665                 *ptr++ = '"';
4666         }
4667         if ( !BER_BVISEMPTY( &si->si_logfilterstr ) ) {
4668                 if ( WHATSLEFT <= STRLENOF( " " LOGFILTERSTR "=\"" "\"" ) + si->si_logfilterstr.bv_len ) return;
4669                 ptr = lutil_strcopy( ptr, " " LOGFILTERSTR "=\"" );
4670                 ptr = lutil_strcopy( ptr, si->si_logfilterstr.bv_val );
4671                 *ptr++ = '"';
4672         }
4673         if ( !BER_BVISNULL( &si->si_logbase ) ) {
4674                 if ( WHATSLEFT <= STRLENOF( " " LOGBASESTR "=\"" "\"" ) + si->si_logbase.bv_len ) return;
4675                 ptr = lutil_strcopy( ptr, " " LOGBASESTR "=\"" );
4676                 ptr = lutil_strcopy( ptr, si->si_logbase.bv_val );
4677                 *ptr++ = '"';
4678         }
4679         if ( ldap_pvt_scope2bv( si->si_scope, &bs ) == LDAP_SUCCESS ) {
4680                 if ( WHATSLEFT <= STRLENOF( " " SCOPESTR "=" ) + bs.bv_len ) return;
4681                 ptr = lutil_strcopy( ptr, " " SCOPESTR "=" );
4682                 ptr = lutil_strcopy( ptr, bs.bv_val );
4683         }
4684         if ( si->si_attrsonly ) {
4685                 if ( WHATSLEFT <= STRLENOF( " " ATTRSONLYSTR "=\"" "\"" ) ) return;
4686                 ptr = lutil_strcopy( ptr, " " ATTRSONLYSTR );
4687         }
4688         if ( si->si_anfile ) {
4689                 if ( WHATSLEFT <= STRLENOF( " " ATTRSSTR "=\":include:" "\"" ) + strlen( si->si_anfile ) ) return;
4690                 ptr = lutil_strcopy( ptr, " " ATTRSSTR "=:include:\"" );
4691                 ptr = lutil_strcopy( ptr, si->si_anfile );
4692                 *ptr++ = '"';
4693         } else if ( si->si_allattrs || si->si_allopattrs ||
4694                 ( si->si_anlist && !BER_BVISNULL(&si->si_anlist[0].an_name) ) )
4695         {
4696                 char *old;
4697
4698                 if ( WHATSLEFT <= STRLENOF( " " ATTRSONLYSTR "=\"" "\"" ) ) return;
4699                 ptr = lutil_strcopy( ptr, " " ATTRSSTR "=\"" );
4700                 old = ptr;
4701                 ptr = anlist_unparse( si->si_anlist, ptr, WHATSLEFT );
4702                 if ( ptr == NULL ) return;
4703                 if ( si->si_allattrs ) {
4704                         if ( WHATSLEFT <= STRLENOF( ",*\"" ) ) return;
4705                         if ( old != ptr ) *ptr++ = ',';
4706                         *ptr++ = '*';
4707                 }
4708                 if ( si->si_allopattrs ) {
4709                         if ( WHATSLEFT <= STRLENOF( ",+\"" ) ) return;
4710                         if ( old != ptr ) *ptr++ = ',';
4711                         *ptr++ = '+';
4712                 }
4713                 *ptr++ = '"';
4714         }
4715         if ( si->si_exanlist && !BER_BVISNULL(&si->si_exanlist[0].an_name) ) {
4716                 if ( WHATSLEFT <= STRLENOF( " " EXATTRSSTR "=" ) ) return;
4717                 ptr = lutil_strcopy( ptr, " " EXATTRSSTR "=" );
4718                 ptr = anlist_unparse( si->si_exanlist, ptr, WHATSLEFT );
4719                 if ( ptr == NULL ) return;
4720         }
4721         if ( WHATSLEFT <= STRLENOF( " " SCHEMASTR "=" ) + STRLENOF( "off" ) ) return;
4722         ptr = lutil_strcopy( ptr, " " SCHEMASTR "=" );
4723         ptr = lutil_strcopy( ptr, si->si_schemachecking ? "on" : "off" );
4724
4725         if ( WHATSLEFT <= STRLENOF( " " TYPESTR "=" ) + STRLENOF( "refreshAndPersist" ) ) return;
4726         ptr = lutil_strcopy( ptr, " " TYPESTR "=" );
4727         ptr = lutil_strcopy( ptr, si->si_type == LDAP_SYNC_REFRESH_AND_PERSIST ?
4728                 "refreshAndPersist" : "refreshOnly" );
4729
4730         if ( si->si_type == LDAP_SYNC_REFRESH_ONLY ) {
4731                 int dd, hh, mm, ss;
4732
4733                 dd = si->si_interval;
4734                 ss = dd % 60;
4735                 dd /= 60;
4736                 mm = dd % 60;
4737                 dd /= 60;
4738                 hh = dd % 24;
4739                 dd /= 24;
4740                 len = snprintf( ptr, WHATSLEFT, " %s=%02d:%02d:%02d:%02d",
4741                         INTERVALSTR, dd, hh, mm, ss );
4742                 if ( len >= WHATSLEFT ) return;
4743                 ptr += len;
4744         }
4745
4746         if ( si->si_got & GOT_RETRY ) {
4747                 const char *space = "";
4748                 if ( WHATSLEFT <= STRLENOF( " " RETRYSTR "=\"" "\"" ) ) return;
4749                 ptr = lutil_strcopy( ptr, " " RETRYSTR "=\"" );
4750                 for (i=0; si->si_retryinterval[i]; i++) {
4751                         len = snprintf( ptr, WHATSLEFT, "%s%ld ", space,
4752                                 (long) si->si_retryinterval[i] );
4753                         space = " ";
4754                         if ( WHATSLEFT - 1 <= len ) return;
4755                         ptr += len;
4756                         if ( si->si_retrynum_init[i] == RETRYNUM_FOREVER )
4757                                 *ptr++ = '+';
4758                         else {
4759                                 len = snprintf( ptr, WHATSLEFT, "%d", si->si_retrynum_init[i] );
4760                                 if ( WHATSLEFT <= len ) return;
4761                                 ptr += len;
4762                         }
4763                 }
4764                 if ( WHATSLEFT <= STRLENOF( "\"" ) ) return;
4765                 *ptr++ = '"';
4766         } else {
4767                 ptr = lutil_strcopy( ptr, " " RETRYSTR "=undefined" );
4768         }
4769
4770         if ( si->si_slimit ) {
4771                 len = snprintf( ptr, WHATSLEFT, " " SLIMITSTR "=%d", si->si_slimit );
4772                 if ( WHATSLEFT <= len ) return;
4773                 ptr += len;
4774         }
4775
4776         if ( si->si_tlimit ) {
4777                 len = snprintf( ptr, WHATSLEFT, " " TLIMITSTR "=%d", si->si_tlimit );
4778                 if ( WHATSLEFT <= len ) return;
4779                 ptr += len;
4780         }
4781
4782         if ( si->si_syncdata ) {
4783                 if ( enum_to_verb( datamodes, si->si_syncdata, &bc ) >= 0 ) {
4784                         if ( WHATSLEFT <= STRLENOF( " " SYNCDATASTR "=" ) + bc.bv_len ) return;
4785                         ptr = lutil_strcopy( ptr, " " SYNCDATASTR "=" );
4786                         ptr = lutil_strcopy( ptr, bc.bv_val );
4787                 }
4788         }
4789         bc.bv_len = ptr - buf;
4790         bc.bv_val = buf;
4791         ber_dupbv( bv, &bc );
4792 }
4793
4794 int
4795 syncrepl_config( ConfigArgs *c )
4796 {
4797         if (c->op == SLAP_CONFIG_EMIT) {
4798                 if ( c->be->be_syncinfo ) {
4799                         struct berval bv;
4800                         syncinfo_t *si;
4801
4802                         for ( si = c->be->be_syncinfo; si; si=si->si_next ) {
4803                                 syncrepl_unparse( si, &bv );
4804                                 ber_bvarray_add( &c->rvalue_vals, &bv );
4805                         }
4806                         return 0;
4807                 }
4808                 return 1;
4809         } else if ( c->op == LDAP_MOD_DELETE ) {
4810                 int isrunning = 0;
4811                 if ( c->be->be_syncinfo ) {
4812                         syncinfo_t *si, **sip;
4813                         int i;
4814
4815                         for ( sip = &c->be->be_syncinfo, i=0; *sip; i++ ) {
4816                                 si = *sip;
4817                                 if ( c->valx == -1 || i == c->valx ) {
4818                                         *sip = si->si_next;
4819                                         si->si_ctype = -1;
4820                                         si->si_next = NULL;
4821                                         /* If the task is currently active, we have to leave
4822                                          * it running. It will exit on its own. This will only
4823                                          * happen when running on the cn=config DB.
4824                                          */
4825                                         if ( si->si_re ) {
4826                                                 if ( ldap_pvt_thread_mutex_trylock( &si->si_mutex )) {
4827                                                         isrunning = 1;
4828                                                 } else {
4829                                                         /* There is no active thread, but we must still
4830                                                          * ensure that no thread is (or will be) queued
4831                                                          * while we removes the task.
4832                                                          */
4833                                                         struct re_s *re = si->si_re;
4834                                                         si->si_re = NULL;
4835
4836                                                         if ( si->si_conn ) {
4837                                                                 connection_client_stop( si->si_conn );
4838                                                                 si->si_conn = NULL;
4839                                                         }
4840
4841                                                         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
4842                                                         if ( ldap_pvt_runqueue_isrunning( &slapd_rq, re ) ) {
4843                                                                 ldap_pvt_runqueue_stoptask( &slapd_rq, re );
4844                                                                 isrunning = 1;
4845                                                         }
4846                                                         ldap_pvt_runqueue_remove( &slapd_rq, re );
4847                                                         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
4848
4849                                                         if ( ldap_pvt_thread_pool_retract( &connection_pool,
4850                                                                         re->routine, re ) > 0 )
4851                                                                 isrunning = 0;
4852
4853                                                         ldap_pvt_thread_mutex_unlock( &si->si_mutex );
4854                                                 }
4855                                         }
4856                                         if ( !isrunning ) {
4857                                                 syncinfo_free( si, 0 );
4858                                         }
4859                                         if ( i == c->valx )
4860                                                 break;
4861                                 } else {
4862                                         sip = &si->si_next;
4863                                 }
4864                         }
4865                 }
4866                 if ( !c->be->be_syncinfo ) {
4867                         SLAP_DBFLAGS( c->be ) &= ~SLAP_DBFLAG_SHADOW_MASK;
4868                 }
4869                 return 0;
4870         }
4871         if ( SLAP_SLURP_SHADOW( c->be ) ) {
4872                 Debug(LDAP_DEBUG_ANY, "%s: "
4873                         "syncrepl: database already shadowed.\n",
4874                         c->log, 0, 0);
4875                 return(1);
4876         } else {
4877                 return add_syncrepl( c );
4878         }
4879 }