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                                 rc = syncrepl_add_glue_ancestors( op, entry );
2574                                 if ( rc == LDAP_SUCCESS ) {
2575                                         goto retry_modrdn;
2576                                 }
2577                         }
2578
2579                         op->o_tmpfree( op->orr_nnewrdn.bv_val, op->o_tmpmemctx );
2580                         op->o_tmpfree( op->orr_newrdn.bv_val, op->o_tmpmemctx );
2581
2582                         slap_mods_free( op->orr_modlist, 1 );
2583                         Debug( LDAP_DEBUG_SYNC,
2584                                         "syncrepl_entry: %s be_modrdn %s (%d)\n",
2585                                         si->si_ridtxt, op->o_req_dn.bv_val, rc );
2586                         op->o_bd = be;
2587                         /* Renamed entries may still have other mods so just fallthru */
2588                         op->o_req_dn = entry->e_name;
2589                         op->o_req_ndn = entry->e_nname;
2590                         /* Use CSN on the modify */
2591                         if ( just_rename )
2592                                 syncCSN = NULL;
2593                         else if ( syncCSN )
2594                                 slap_queue_csn( op, syncCSN );
2595                 }
2596                 if ( dni.mods ) {
2597                         op->o_tag = LDAP_REQ_MODIFY;
2598                         op->orm_modlist = dni.mods;
2599                         op->orm_no_opattrs = 1;
2600                         op->o_bd = si->si_wbe;
2601
2602                         rc = op->o_bd->be_modify( op, &rs_modify );
2603                         slap_mods_free( op->orm_modlist, 1 );
2604                         op->orm_no_opattrs = 0;
2605                         Debug( LDAP_DEBUG_SYNC,
2606                                         "syncrepl_entry: %s be_modify %s (%d)\n",
2607                                         si->si_ridtxt, op->o_req_dn.bv_val, rc );
2608                         if ( rs_modify.sr_err != LDAP_SUCCESS ) {
2609                                 Debug( LDAP_DEBUG_ANY,
2610                                         "syncrepl_entry: %s be_modify failed (%d)\n",
2611                                         si->si_ridtxt, rs_modify.sr_err, 0 );
2612                         }
2613                         syncCSN = NULL;
2614                         op->o_bd = be;
2615                 } else if ( !dni.renamed ) {
2616                         Debug( LDAP_DEBUG_SYNC,
2617                                         "syncrepl_entry: %s entry unchanged, ignored (%s)\n",
2618                                         si->si_ridtxt, op->o_req_dn.bv_val, 0 );
2619                         if ( syncCSN ) {
2620                                 slap_graduate_commit_csn( op );
2621                                 syncCSN = NULL;
2622                         }
2623                 }
2624                 goto done;
2625         case LDAP_SYNC_DELETE :
2626                 if ( !BER_BVISNULL( &dni.dn ) ) {
2627                         op->o_req_dn = dni.dn;
2628                         op->o_req_ndn = dni.ndn;
2629                         op->o_tag = LDAP_REQ_DELETE;
2630                         op->o_bd = si->si_wbe;
2631                         rc = op->o_bd->be_delete( op, &rs_delete );
2632                         Debug( LDAP_DEBUG_SYNC,
2633                                         "syncrepl_entry: %s be_delete %s (%d)\n",
2634                                         si->si_ridtxt, op->o_req_dn.bv_val, rc );
2635
2636                         while ( rs_delete.sr_err == LDAP_SUCCESS
2637                                 && op->o_delete_glue_parent ) {
2638                                 op->o_delete_glue_parent = 0;
2639                                 if ( !be_issuffix( be, &op->o_req_ndn ) ) {
2640                                         slap_callback cb = { NULL };
2641                                         cb.sc_response = slap_null_cb;
2642                                         dnParent( &op->o_req_ndn, &pdn );
2643                                         op->o_req_dn = pdn;
2644                                         op->o_req_ndn = pdn;
2645                                         op->o_callback = &cb;
2646                                         op->o_bd->be_delete( op, &rs_delete );
2647                                 } else {
2648                                         break;
2649                                 }
2650                         }
2651                         syncCSN = NULL;
2652                         op->o_bd = be;
2653                 }
2654                 goto done;
2655
2656         default :
2657                 Debug( LDAP_DEBUG_ANY,
2658                         "syncrepl_entry: %s unknown syncstate\n", si->si_ridtxt, 0, 0 );
2659                 goto done;
2660         }
2661
2662 done:
2663         if ( !BER_BVISNULL( &syncUUID_strrep ) ) {
2664                 slap_sl_free( syncUUID_strrep.bv_val, op->o_tmpmemctx );
2665                 BER_BVZERO( &syncUUID_strrep );
2666         }
2667         if ( !BER_BVISNULL( &dni.ndn ) ) {
2668                 op->o_tmpfree( dni.ndn.bv_val, op->o_tmpmemctx );
2669         }
2670         if ( !BER_BVISNULL( &dni.dn ) ) {
2671                 op->o_tmpfree( dni.dn.bv_val, op->o_tmpmemctx );
2672         }
2673         if ( entry ) {
2674                 entry_free( entry );
2675         }
2676         if ( syncCSN ) {
2677                 slap_graduate_commit_csn( op );
2678         }
2679         if ( !BER_BVISNULL( &op->o_csn ) && freecsn ) {
2680                 op->o_tmpfree( op->o_csn.bv_val, op->o_tmpmemctx );
2681         }
2682         BER_BVZERO( &op->o_csn );
2683         return rc;
2684 }
2685
2686 static struct berval gcbva[] = {
2687         BER_BVC("top"),
2688         BER_BVC("glue"),
2689         BER_BVNULL
2690 };
2691
2692 #define NP_DELETE_ONE   2
2693
2694 static void
2695 syncrepl_del_nonpresent(
2696         Operation *op,
2697         syncinfo_t *si,
2698         BerVarray uuids,
2699         struct sync_cookie *sc,
2700         int m )
2701 {
2702         Backend* be = op->o_bd;
2703         slap_callback   cb = { NULL };
2704         SlapReply       rs_search = {REP_RESULT};
2705         SlapReply       rs_delete = {REP_RESULT};
2706         SlapReply       rs_modify = {REP_RESULT};
2707         struct nonpresent_entry *np_list, *np_prev;
2708         int rc;
2709         AttributeName   an[2];
2710
2711         struct berval pdn = BER_BVNULL;
2712         struct berval csn;
2713
2714         op->o_req_dn = si->si_base;
2715         op->o_req_ndn = si->si_base;
2716
2717         cb.sc_response = nonpresent_callback;
2718         cb.sc_private = si;
2719
2720         op->o_callback = &cb;
2721         op->o_tag = LDAP_REQ_SEARCH;
2722         op->ors_scope = si->si_scope;
2723         op->ors_deref = LDAP_DEREF_NEVER;
2724         op->o_time = slap_get_time();
2725         op->ors_tlimit = SLAP_NO_LIMIT;
2726
2727
2728         if ( uuids ) {
2729                 Filter uf;
2730                 AttributeAssertion eq = ATTRIBUTEASSERTION_INIT;
2731                 int i;
2732
2733                 op->ors_attrsonly = 1;
2734                 op->ors_attrs = slap_anlist_no_attrs;
2735                 op->ors_limit = NULL;
2736                 op->ors_filter = &uf;
2737
2738                 uf.f_ava = &eq;
2739                 uf.f_av_desc = slap_schema.si_ad_entryUUID;
2740                 uf.f_next = NULL;
2741                 uf.f_choice = LDAP_FILTER_EQUALITY;
2742                 si->si_refreshDelete |= NP_DELETE_ONE;
2743
2744                 for (i=0; uuids[i].bv_val; i++) {
2745                         op->ors_slimit = 1;
2746                         uf.f_av_value = uuids[i];
2747                         filter2bv_x( op, op->ors_filter, &op->ors_filterstr );
2748                         rc = be->be_search( op, &rs_search );
2749                         op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
2750                 }
2751                 si->si_refreshDelete ^= NP_DELETE_ONE;
2752         } else {
2753                 Filter *cf, *of;
2754                 Filter mmf[2];
2755                 AttributeAssertion mmaa;
2756
2757                 memset( &an[0], 0, 2 * sizeof( AttributeName ) );
2758                 an[0].an_name = slap_schema.si_ad_entryUUID->ad_cname;
2759                 an[0].an_desc = slap_schema.si_ad_entryUUID;
2760                 op->ors_attrs = an;
2761                 op->ors_slimit = SLAP_NO_LIMIT;
2762                 op->ors_tlimit = SLAP_NO_LIMIT;
2763                 op->ors_limit = NULL;
2764                 op->ors_attrsonly = 0;
2765                 op->ors_filter = filter_dup( si->si_filter, op->o_tmpmemctx );
2766                 /* In multimaster, updates can continue to arrive while
2767                  * we're searching. Limit the search result to entries
2768                  * older than our newest cookie CSN.
2769                  */
2770                 if ( SLAP_MULTIMASTER( op->o_bd )) {
2771                         Filter *f;
2772                         int i;
2773
2774                         f = mmf;
2775                         f->f_choice = LDAP_FILTER_AND;
2776                         f->f_next = op->ors_filter;
2777                         f->f_and = f+1;
2778                         of = f->f_and;
2779                         f = of;
2780                         f->f_choice = LDAP_FILTER_LE;
2781                         f->f_ava = &mmaa;
2782                         f->f_av_desc = slap_schema.si_ad_entryCSN;
2783                         f->f_next = NULL;
2784                         BER_BVZERO( &f->f_av_value );
2785                         for ( i=0; i<sc->numcsns; i++ ) {
2786                                 if ( ber_bvcmp( &sc->ctxcsn[i], &f->f_av_value ) > 0 )
2787                                         f->f_av_value = sc->ctxcsn[i];
2788                         }
2789                         of = op->ors_filter;
2790                         op->ors_filter = mmf;
2791                         filter2bv_x( op, op->ors_filter, &op->ors_filterstr );
2792                 } else {
2793                         cf = NULL;
2794                         op->ors_filterstr = si->si_filterstr;
2795                 }
2796                 op->o_nocaching = 1;
2797
2798
2799                 rc = be->be_search( op, &rs_search );
2800                 if ( SLAP_MULTIMASTER( op->o_bd )) {
2801                         op->ors_filter = of;
2802                 }
2803                 if ( op->ors_filter ) filter_free_x( op, op->ors_filter, 1 );
2804                 if ( op->ors_filterstr.bv_val != si->si_filterstr.bv_val ) {
2805                         op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
2806                 }
2807
2808         }
2809
2810         op->o_nocaching = 0;
2811
2812         if ( !LDAP_LIST_EMPTY( &si->si_nonpresentlist ) ) {
2813
2814                 if ( sc->ctxcsn && !BER_BVISNULL( &sc->ctxcsn[m] ) ) {
2815                         csn = sc->ctxcsn[m];
2816                 } else {
2817                         csn = si->si_syncCookie.ctxcsn[0];
2818                 }
2819
2820                 op->o_bd = si->si_wbe;
2821                 slap_queue_csn( op, &csn );
2822
2823                 np_list = LDAP_LIST_FIRST( &si->si_nonpresentlist );
2824                 while ( np_list != NULL ) {
2825                         LDAP_LIST_REMOVE( np_list, npe_link );
2826                         np_prev = np_list;
2827                         np_list = LDAP_LIST_NEXT( np_list, npe_link );
2828                         op->o_tag = LDAP_REQ_DELETE;
2829                         op->o_callback = &cb;
2830                         cb.sc_response = null_callback;
2831                         cb.sc_private = si;
2832                         op->o_req_dn = *np_prev->npe_name;
2833                         op->o_req_ndn = *np_prev->npe_nname;
2834                         rc = op->o_bd->be_delete( op, &rs_delete );
2835                         Debug( LDAP_DEBUG_SYNC,
2836                                 "syncrepl_del_nonpresent: %s be_delete %s (%d)\n",
2837                                 si->si_ridtxt, op->o_req_dn.bv_val, rc );
2838
2839                         if ( rs_delete.sr_err == LDAP_NOT_ALLOWED_ON_NONLEAF ) {
2840                                 Modifications mod1, mod2;
2841                                 mod1.sml_op = LDAP_MOD_REPLACE;
2842                                 mod1.sml_flags = 0;
2843                                 mod1.sml_desc = slap_schema.si_ad_objectClass;
2844                                 mod1.sml_type = mod1.sml_desc->ad_cname;
2845                                 mod1.sml_numvals = 2;
2846                                 mod1.sml_values = &gcbva[0];
2847                                 mod1.sml_nvalues = NULL;
2848                                 mod1.sml_next = &mod2;
2849
2850                                 mod2.sml_op = LDAP_MOD_REPLACE;
2851                                 mod2.sml_flags = 0;
2852                                 mod2.sml_desc = slap_schema.si_ad_structuralObjectClass;
2853                                 mod2.sml_type = mod2.sml_desc->ad_cname;
2854                                 mod2.sml_numvals = 1;
2855                                 mod2.sml_values = &gcbva[1];
2856                                 mod2.sml_nvalues = NULL;
2857                                 mod2.sml_next = NULL;
2858
2859                                 op->o_tag = LDAP_REQ_MODIFY;
2860                                 op->orm_modlist = &mod1;
2861
2862                                 rc = op->o_bd->be_modify( op, &rs_modify );
2863                                 if ( mod2.sml_next ) slap_mods_free( mod2.sml_next, 1 );
2864                         }
2865
2866                         while ( rs_delete.sr_err == LDAP_SUCCESS &&
2867                                         op->o_delete_glue_parent ) {
2868                                 op->o_delete_glue_parent = 0;
2869                                 if ( !be_issuffix( be, &op->o_req_ndn ) ) {
2870                                         slap_callback cb = { NULL };
2871                                         cb.sc_response = slap_null_cb;
2872                                         dnParent( &op->o_req_ndn, &pdn );
2873                                         op->o_req_dn = pdn;
2874                                         op->o_req_ndn = pdn;
2875                                         op->o_callback = &cb;
2876                                         /* give it a root privil ? */
2877                                         op->o_bd->be_delete( op, &rs_delete );
2878                                 } else {
2879                                         break;
2880                                 }
2881                         }
2882
2883                         op->o_delete_glue_parent = 0;
2884
2885                         ber_bvfree( np_prev->npe_name );
2886                         ber_bvfree( np_prev->npe_nname );
2887                         ch_free( np_prev );
2888
2889                         if ( slapd_shutdown ) {
2890                                 break;
2891                         }
2892                 }
2893
2894                 slap_graduate_commit_csn( op );
2895                 op->o_bd = be;
2896
2897                 op->o_tmpfree( op->o_csn.bv_val, op->o_tmpmemctx );
2898                 BER_BVZERO( &op->o_csn );
2899         }
2900
2901         return;
2902 }
2903
2904 static int
2905 syncrepl_add_glue_ancestors(
2906         Operation* o,
2907         Entry *e )
2908 {
2909         Operation op2 = *o, *op = &op2;
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* o,
3046         Entry *e )
3047 {
3048         Operation op2 = *o, *op = &op2;
3049         slap_callback cb = { NULL };
3050         int     rc;
3051         Backend *be = op->o_bd;
3052         SlapReply       rs_add = {REP_RESULT};
3053
3054         op->o_tag = LDAP_REQ_ADD;
3055         op->o_callback = &cb;
3056         cb.sc_response = null_callback;
3057         cb.sc_private = NULL;
3058
3059         rc = syncrepl_add_glue_ancestors( op, e );
3060         if ( rc != LDAP_SUCCESS ) {
3061                 return rc;
3062         }
3063
3064         op->o_req_dn = e->e_name;
3065         op->o_req_ndn = e->e_nname;
3066         op->ora_e = e;
3067         rc = be->be_add ( op, &rs_add );
3068         if ( rs_add.sr_err == LDAP_SUCCESS ) {
3069                 if ( op->ora_e == e )
3070                         be_entry_release_w( op, e );
3071         } else {
3072                 entry_free( e );
3073         }
3074
3075         return rc;
3076 }
3077
3078 static int
3079 syncrepl_updateCookie(
3080         syncinfo_t *si,
3081         Operation *op,
3082         struct sync_cookie *syncCookie )
3083 {
3084         Backend *be = op->o_bd;
3085         Modifications mod;
3086         struct berval first = BER_BVNULL;
3087 #ifdef CHECK_CSN
3088         Syntax *syn = slap_schema.si_ad_contextCSN->ad_type->sat_syntax;
3089 #endif
3090
3091         int rc, i, j, changed = 0;
3092         ber_len_t len;
3093
3094         slap_callback cb = { NULL };
3095         SlapReply       rs_modify = {REP_RESULT};
3096
3097         mod.sml_op = LDAP_MOD_REPLACE;
3098         mod.sml_desc = slap_schema.si_ad_contextCSN;
3099         mod.sml_type = mod.sml_desc->ad_cname;
3100         mod.sml_flags = SLAP_MOD_INTERNAL;
3101         mod.sml_nvalues = NULL;
3102         mod.sml_next = NULL;
3103
3104         ldap_pvt_thread_mutex_lock( &si->si_cookieState->cs_mutex );
3105
3106 #ifdef CHECK_CSN
3107         for ( i=0; i<syncCookie->numcsns; i++ ) {
3108                 assert( !syn->ssyn_validate( syn, syncCookie->ctxcsn+i ));
3109         }
3110         for ( i=0; i<si->si_cookieState->cs_num; i++ ) {
3111                 assert( !syn->ssyn_validate( syn, si->si_cookieState->cs_vals+i ));
3112         }
3113 #endif
3114
3115         /* clone the cookieState CSNs so we can Replace the whole thing */
3116         mod.sml_numvals = si->si_cookieState->cs_num;
3117         mod.sml_values = op->o_tmpalloc(( mod.sml_numvals+1 )*sizeof(struct berval), op->o_tmpmemctx );
3118         for ( i=0; i<mod.sml_numvals; i++ )
3119                 mod.sml_values[i] = si->si_cookieState->cs_vals[i];
3120         BER_BVZERO( &mod.sml_values[i] );
3121
3122         /* find any CSNs in the syncCookie that are newer than the cookieState */
3123         for ( i=0; i<syncCookie->numcsns; i++ ) {
3124                 for ( j=0; j<si->si_cookieState->cs_num; j++ ) {
3125                         if ( syncCookie->sids[i] != si->si_cookieState->cs_sids[j] )
3126                                 continue;
3127                         len = syncCookie->ctxcsn[i].bv_len;
3128                         if ( len > si->si_cookieState->cs_vals[j].bv_len )
3129                                 len = si->si_cookieState->cs_vals[j].bv_len;
3130                         if ( memcmp( syncCookie->ctxcsn[i].bv_val,
3131                                 si->si_cookieState->cs_vals[j].bv_val, len ) > 0 ) {
3132                                 mod.sml_values[j] = syncCookie->ctxcsn[i];
3133                                 changed = 1;
3134                                 if ( BER_BVISNULL( &first ) ) {
3135                                         first = syncCookie->ctxcsn[i];
3136
3137                                 } else if ( memcmp( syncCookie->ctxcsn[i].bv_val, first.bv_val, first.bv_len ) > 0 )
3138                                 {
3139                                         first = syncCookie->ctxcsn[i];
3140                                 }
3141                         }
3142                         break;
3143                 }
3144                 /* there was no match for this SID, it's a new CSN */
3145                 if ( j == si->si_cookieState->cs_num ) {
3146                         mod.sml_values = op->o_tmprealloc( mod.sml_values,
3147                                 ( mod.sml_numvals+2 )*sizeof(struct berval), op->o_tmpmemctx );
3148                         mod.sml_values[mod.sml_numvals++] = syncCookie->ctxcsn[i];
3149                         BER_BVZERO( &mod.sml_values[mod.sml_numvals] );
3150                         if ( BER_BVISNULL( &first ) ) {
3151                                 first = syncCookie->ctxcsn[i];
3152                         } else if ( memcmp( syncCookie->ctxcsn[i].bv_val, first.bv_val, first.bv_len ) > 0 )
3153                         {
3154                                 first = syncCookie->ctxcsn[i];
3155                         }
3156                         changed = 1;
3157                 }
3158         }
3159         /* Should never happen, ITS#5065 */
3160         if ( BER_BVISNULL( &first ) || !changed ) {
3161                 ldap_pvt_thread_mutex_unlock( &si->si_cookieState->cs_mutex );
3162                 op->o_tmpfree( mod.sml_values, op->o_tmpmemctx );
3163                 return 0;
3164         }
3165         op->o_bd = si->si_wbe;
3166         slap_queue_csn( op, &first );
3167
3168         op->o_tag = LDAP_REQ_MODIFY;
3169
3170         cb.sc_response = null_callback;
3171         cb.sc_private = si;
3172
3173         op->o_callback = &cb;
3174         op->o_req_dn = si->si_contextdn;
3175         op->o_req_ndn = si->si_contextdn;
3176
3177         /* update contextCSN */
3178         op->o_dont_replicate = 1;
3179
3180         op->orm_modlist = &mod;
3181         op->orm_no_opattrs = 1;
3182         rc = op->o_bd->be_modify( op, &rs_modify );
3183
3184         if ( rs_modify.sr_err == LDAP_NO_SUCH_OBJECT &&
3185                 SLAP_SYNC_SUBENTRY( op->o_bd )) {
3186                 const char      *text;
3187                 char txtbuf[SLAP_TEXT_BUFLEN];
3188                 size_t textlen = sizeof txtbuf;
3189                 Entry *e = slap_create_context_csn_entry( op->o_bd, NULL );
3190                 rc = slap_mods2entry( &mod, &e, 0, 1, &text, txtbuf, textlen);
3191                 op->ora_e = e;
3192                 rc = op->o_bd->be_add( op, &rs_modify );
3193                 if ( e == op->ora_e )
3194                         be_entry_release_w( op, op->ora_e );
3195         }
3196
3197         op->orm_no_opattrs = 0;
3198         op->o_dont_replicate = 0;
3199
3200         if ( rs_modify.sr_err == LDAP_SUCCESS ) {
3201                 slap_sync_cookie_free( &si->si_syncCookie, 0 );
3202                 slap_dup_sync_cookie( &si->si_syncCookie, syncCookie );
3203                 /* If we replaced any old values */
3204                 for ( i=0; i<si->si_cookieState->cs_num; i++ ) {
3205                         if ( mod.sml_values[i].bv_val != si->si_cookieState->cs_vals[i].bv_val )
3206                                         ber_bvreplace( &si->si_cookieState->cs_vals[i],
3207                                                 &mod.sml_values[i] );
3208                 }
3209                 /* Handle any added values */
3210                 if ( i < mod.sml_numvals ) {
3211                         si->si_cookieState->cs_num = mod.sml_numvals;
3212                         value_add( &si->si_cookieState->cs_vals, &mod.sml_values[i] );
3213                         free( si->si_cookieState->cs_sids );
3214                         si->si_cookieState->cs_sids = slap_parse_csn_sids(
3215                                 si->si_cookieState->cs_vals, si->si_cookieState->cs_num, NULL );
3216                 }
3217
3218                 si->si_cookieState->cs_age++;
3219                 si->si_cookieAge = si->si_cookieState->cs_age;
3220         } else {
3221                 Debug( LDAP_DEBUG_ANY,
3222                         "syncrepl_updateCookie: %s be_modify failed (%d)\n",
3223                         si->si_ridtxt, rs_modify.sr_err, 0 );
3224         }
3225         ldap_pvt_thread_mutex_unlock( &si->si_cookieState->cs_mutex );
3226
3227         op->o_bd = be;
3228         op->o_tmpfree( op->o_csn.bv_val, op->o_tmpmemctx );
3229         BER_BVZERO( &op->o_csn );
3230         if ( mod.sml_next ) slap_mods_free( mod.sml_next, 1 );
3231         op->o_tmpfree( mod.sml_values, op->o_tmpmemctx );
3232
3233 #ifdef CHECK_CSN
3234         for ( i=0; i<si->si_cookieState->cs_num; i++ ) {
3235                 assert( !syn->ssyn_validate( syn, si->si_cookieState->cs_vals+i ));
3236         }
3237 #endif
3238
3239         return rc;
3240 }
3241
3242 /* Compare the attribute from the old entry to the one in the new
3243  * entry. The Modifications from the new entry will either be left
3244  * in place, or changed to an Add or Delete as needed.
3245  */
3246 static void
3247 attr_cmp( Operation *op, Attribute *old, Attribute *new,
3248         Modifications ***mret, Modifications ***mcur )
3249 {
3250         int i, j;
3251         Modifications *mod, **modtail;
3252
3253         modtail = *mret;
3254
3255         if ( old ) {
3256                 int n, o, nn, no;
3257                 struct berval **adds, **dels;
3258                 /* count old and new */
3259                 for ( o=0; old->a_vals[o].bv_val; o++ ) ;
3260                 for ( n=0; new->a_vals[n].bv_val; n++ ) ;
3261
3262                 /* there MUST be both old and new values */
3263                 assert( o != 0 );
3264                 assert( n != 0 );
3265                 j = 0;
3266
3267                 adds = op->o_tmpalloc( sizeof(struct berval *) * n, op->o_tmpmemctx );
3268                 dels = op->o_tmpalloc( sizeof(struct berval *) * o, op->o_tmpmemctx );
3269
3270                 for ( i=0; i<o; i++ ) dels[i] = &old->a_vals[i];
3271                 for ( i=0; i<n; i++ ) adds[i] = &new->a_vals[i];
3272
3273                 nn = n; no = o;
3274
3275                 for ( i=0; i<o; i++ ) {
3276                         for ( j=0; j<n; j++ ) {
3277                                 if ( !adds[j] )
3278                                         continue;
3279                                 if ( bvmatch( dels[i], adds[j] ) ) {
3280                                         no--;
3281                                         nn--;
3282                                         adds[j] = NULL;
3283                                         dels[i] = NULL;
3284                                         break;
3285                                 }
3286                         }
3287                 }
3288
3289                 /* Don't delete/add an objectClass, always use the replace op.
3290                  * Modify would fail if provider has replaced entry with a new,
3291                  * and the new explicitly includes a superior of a class that was
3292                  * only included implicitly in the old entry.  Ref ITS#5517.
3293                  *
3294                  * Also use replace op if attr has no equality matching rule.
3295                  * (ITS#5781)
3296                  */
3297                 if ( ( nn || ( no > 0 && no < o ) ) &&
3298                         ( old->a_desc == slap_schema.si_ad_objectClass ||
3299                          !old->a_desc->ad_type->sat_equality ) )
3300                 {
3301                         no = o;
3302                 }
3303
3304                 i = j;
3305                 /* all old values were deleted, just use the replace op */
3306                 if ( no == o ) {
3307                         i = j-1;
3308                 } else if ( no ) {
3309                 /* delete some values */
3310                         mod = ch_malloc( sizeof( Modifications ) );
3311                         mod->sml_op = LDAP_MOD_DELETE;
3312                         mod->sml_flags = 0;
3313                         mod->sml_desc = old->a_desc;
3314                         mod->sml_type = mod->sml_desc->ad_cname;
3315                         mod->sml_numvals = no;
3316                         mod->sml_values = ch_malloc( ( no + 1 ) * sizeof(struct berval) );
3317                         if ( old->a_vals != old->a_nvals ) {
3318                                 mod->sml_nvalues = ch_malloc( ( no + 1 ) * sizeof(struct berval) );
3319                         } else {
3320                                 mod->sml_nvalues = NULL;
3321                         }
3322                         j = 0;
3323                         for ( i = 0; i < o; i++ ) {
3324                                 if ( !dels[i] ) continue;
3325                                 ber_dupbv( &mod->sml_values[j], &old->a_vals[i] );
3326                                 if ( mod->sml_nvalues ) {
3327                                         ber_dupbv( &mod->sml_nvalues[j], &old->a_nvals[i] );
3328                                 }
3329                                 j++;
3330                         }
3331                         BER_BVZERO( &mod->sml_values[j] );
3332                         if ( mod->sml_nvalues ) {
3333                                 BER_BVZERO( &mod->sml_nvalues[j] );
3334                         }
3335                         *modtail = mod;
3336                         modtail = &mod->sml_next;
3337                         i = j;
3338                 }
3339                 op->o_tmpfree( dels, op->o_tmpmemctx );
3340                 /* some values were added */
3341                 if ( nn && no < o ) {
3342                         mod = ch_malloc( sizeof( Modifications ) );
3343                         mod->sml_op = LDAP_MOD_ADD;
3344                         mod->sml_flags = 0;
3345                         mod->sml_desc = old->a_desc;
3346                         mod->sml_type = mod->sml_desc->ad_cname;
3347                         mod->sml_numvals = nn;
3348                         mod->sml_values = ch_malloc( ( nn + 1 ) * sizeof(struct berval) );
3349                         if ( old->a_vals != old->a_nvals ) {
3350                                 mod->sml_nvalues = ch_malloc( ( nn + 1 ) * sizeof(struct berval) );
3351                         } else {
3352                                 mod->sml_nvalues = NULL;
3353                         }
3354                         j = 0;
3355                         for ( i = 0; i < n; i++ ) {
3356                                 if ( !adds[i] ) continue;
3357                                 ber_dupbv( &mod->sml_values[j], &new->a_vals[i] );
3358                                 if ( mod->sml_nvalues ) {
3359                                         ber_dupbv( &mod->sml_nvalues[j], &new->a_nvals[i] );
3360                                 }
3361                                 j++;
3362                         }
3363                         BER_BVZERO( &mod->sml_values[j] );
3364                         if ( mod->sml_nvalues ) {
3365                                 BER_BVZERO( &mod->sml_nvalues[j] );
3366                         }
3367                         *modtail = mod;
3368                         modtail = &mod->sml_next;
3369                         i = j;
3370                 }
3371                 op->o_tmpfree( adds, op->o_tmpmemctx );
3372         } else {
3373                 /* new attr, just use the new mod */
3374                 i = 0;
3375                 j = 1;
3376         }
3377         /* advance to next element */
3378         mod = **mcur;
3379         if ( mod ) {
3380                 if ( i != j ) {
3381                         **mcur = mod->sml_next;
3382                         *modtail = mod;
3383                         modtail = &mod->sml_next;
3384                 } else {
3385                         *mcur = &mod->sml_next;
3386                 }
3387         }
3388         *mret = modtail;
3389 }
3390
3391 /* Generate a set of modifications to change the old entry into the
3392  * new one. On input ml is a list of modifications equivalent to
3393  * the new entry. It will be massaged and the result will be stored
3394  * in mods.
3395  */
3396 void syncrepl_diff_entry( Operation *op, Attribute *old, Attribute *new,
3397         Modifications **mods, Modifications **ml, int is_ctx)
3398 {
3399         Modifications **modtail = mods;
3400
3401         /* We assume that attributes are saved in the same order
3402          * in the remote and local databases. So if we walk through
3403          * the attributeDescriptions one by one they should match in
3404          * lock step. If not, look for an add or delete.
3405          */
3406         while ( old && new )
3407         {
3408                 /* If we've seen this before, use its mod now */
3409                 if ( new->a_flags & SLAP_ATTR_IXADD ) {
3410                         attr_cmp( op, NULL, new, &modtail, &ml );
3411                         new = new->a_next;
3412                         continue;
3413                 }
3414                 /* Skip contextCSN */
3415                 if ( is_ctx && old->a_desc ==
3416                         slap_schema.si_ad_contextCSN ) {
3417                         old = old->a_next;
3418                         continue;
3419                 }
3420
3421                 if ( old->a_desc != new->a_desc ) {
3422                         Modifications *mod;
3423                         Attribute *tmp;
3424
3425                         /* If it's just been re-added later,
3426                          * remember that we've seen it.
3427                          */
3428                         tmp = attr_find( new, old->a_desc );
3429                         if ( tmp ) {
3430                                 tmp->a_flags |= SLAP_ATTR_IXADD;
3431                         } else {
3432                                 /* If it's a new attribute, pull it in.
3433                                  */
3434                                 tmp = attr_find( old, new->a_desc );
3435                                 if ( !tmp ) {
3436                                         attr_cmp( op, NULL, new, &modtail, &ml );
3437                                         new = new->a_next;
3438                                         continue;
3439                                 }
3440                                 /* Delete old attr */
3441                                 mod = ch_malloc( sizeof( Modifications ) );
3442                                 mod->sml_op = LDAP_MOD_DELETE;
3443                                 mod->sml_flags = 0;
3444                                 mod->sml_desc = old->a_desc;
3445                                 mod->sml_type = mod->sml_desc->ad_cname;
3446                                 mod->sml_numvals = 0;
3447                                 mod->sml_values = NULL;
3448                                 mod->sml_nvalues = NULL;
3449                                 *modtail = mod;
3450                                 modtail = &mod->sml_next;
3451                         }
3452                         old = old->a_next;
3453                         continue;
3454                 }
3455                 /* kludge - always update modifiersName so that it
3456                  * stays co-located with the other mod opattrs. But only
3457                  * if we know there are other valid mods.
3458                  */
3459                 if ( *mods && ( old->a_desc == slap_schema.si_ad_modifiersName ||
3460                         old->a_desc == slap_schema.si_ad_modifyTimestamp ))
3461                         attr_cmp( op, NULL, new, &modtail, &ml );
3462                 else
3463                         attr_cmp( op, old, new, &modtail, &ml );
3464                 new = new->a_next;
3465                 old = old->a_next;
3466         }
3467         *modtail = *ml;
3468         *ml = NULL;
3469 }
3470
3471 static int
3472 dn_callback(
3473         Operation*      op,
3474         SlapReply*      rs )
3475 {
3476         dninfo *dni = op->o_callback->sc_private;
3477
3478         if ( rs->sr_type == REP_SEARCH ) {
3479                 if ( !BER_BVISNULL( &dni->dn ) ) {
3480                         Debug( LDAP_DEBUG_ANY,
3481                                 "dn_callback : consistency error - "
3482                                 "entryUUID is not unique\n", 0, 0, 0 );
3483                 } else {
3484                         ber_dupbv_x( &dni->dn, &rs->sr_entry->e_name, op->o_tmpmemctx );
3485                         ber_dupbv_x( &dni->ndn, &rs->sr_entry->e_nname, op->o_tmpmemctx );
3486                         /* If there is a new entry, see if it differs from the old.
3487                          * We compare the non-normalized values so that cosmetic changes
3488                          * in the provider are always propagated.
3489                          */
3490                         if ( dni->new_entry ) {
3491                                 Modifications **modtail, **ml;
3492                                 Attribute *old, *new;
3493                                 struct berval old_rdn, new_rdn;
3494                                 struct berval old_p, new_p;
3495                                 int is_ctx, new_sup = 0;
3496
3497                                 /* If old entry is not a glue entry, make sure new entry
3498                                  * is actually newer than old entry
3499                                  */
3500                                 if ( !is_entry_glue( rs->sr_entry )) {
3501                                         old = attr_find( rs->sr_entry->e_attrs,
3502                                                 slap_schema.si_ad_entryCSN );
3503                                         new = attr_find( dni->new_entry->e_attrs,
3504                                                 slap_schema.si_ad_entryCSN );
3505                                         if ( new && old ) {
3506                                                 int rc;
3507                                                 ber_len_t len = old->a_vals[0].bv_len;
3508                                                 if ( len > new->a_vals[0].bv_len )
3509                                                         len = new->a_vals[0].bv_len;
3510                                                 rc = memcmp( old->a_vals[0].bv_val,
3511                                                         new->a_vals[0].bv_val, len );
3512                                                 if ( rc > 0 ) {
3513                                                         Debug( LDAP_DEBUG_SYNC,
3514                                                                 "dn_callback : new entry is older than ours "
3515                                                                 "%s ours %s, new %s\n",
3516                                                                 rs->sr_entry->e_name.bv_val,
3517                                                                 old->a_vals[0].bv_val,
3518                                                                 new->a_vals[0].bv_val );
3519                                                         return LDAP_SUCCESS;
3520                                                 } else if ( rc == 0 ) {
3521                                                         Debug( LDAP_DEBUG_SYNC,
3522                                                                 "dn_callback : entries have identical CSN "
3523                                                                 "%s %s\n",
3524                                                                 rs->sr_entry->e_name.bv_val,
3525                                                                 old->a_vals[0].bv_val, 0 );
3526                                                         return LDAP_SUCCESS;
3527                                                 }
3528                                         }
3529                                 }
3530
3531                                 is_ctx = dn_match( &rs->sr_entry->e_nname,
3532                                         &op->o_bd->be_nsuffix[0] );
3533
3534                                 /* Did the DN change?
3535                                  * case changes in the parent are ignored,
3536                                  * we only want to know if the RDN was
3537                                  * actually changed.
3538                                  */
3539                                 dnRdn( &rs->sr_entry->e_name, &old_rdn );
3540                                 dnRdn( &dni->new_entry->e_name, &new_rdn );
3541                                 dnParent( &rs->sr_entry->e_nname, &old_p );
3542                                 dnParent( &dni->new_entry->e_nname, &new_p );
3543
3544                                 new_sup = !dn_match( &old_p, &new_p );
3545                                 if ( !dn_match( &old_rdn, &new_rdn ) || new_sup )
3546                                 {
3547                                         struct berval oldRDN, oldVal;
3548                                         AttributeDescription *ad = NULL;
3549                                         int oldpos, newpos;
3550                                         Attribute *a;
3551
3552                                         dni->renamed = 1;
3553                                         if ( new_sup )
3554                                                 dni->nnewSup = new_p;
3555
3556                                         /* See if the oldRDN was deleted */
3557                                         dnRdn( &rs->sr_entry->e_nname, &oldRDN );
3558                                         oldVal.bv_val = strchr(oldRDN.bv_val, '=') + 1;
3559                                         oldVal.bv_len = oldRDN.bv_len - ( oldVal.bv_val -
3560                                                 oldRDN.bv_val );
3561                                         oldRDN.bv_len -= oldVal.bv_len + 1;
3562                                         slap_bv2ad( &oldRDN, &ad, &rs->sr_text );
3563                                         dni->oldDesc = ad;
3564                                         for ( oldpos=0, a=rs->sr_entry->e_attrs;
3565                                                 a && a->a_desc != ad; oldpos++, a=a->a_next );
3566                                         dni->oldNattr = a;
3567                                         for ( newpos=0, a=dni->new_entry->e_attrs;
3568                                                 a && a->a_desc != ad; newpos++, a=a->a_next );
3569                                         if ( !a || oldpos != newpos || attr_valfind( a,
3570                                                 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH |
3571                                                 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
3572                                                 SLAP_MR_VALUE_OF_SYNTAX,
3573                                                 &oldVal, NULL, op->o_tmpmemctx ) != LDAP_SUCCESS )
3574                                         {
3575                                                 dni->delOldRDN = 1;
3576                                         }
3577                                         /* Get the newRDN's desc */
3578                                         dnRdn( &dni->new_entry->e_nname, &oldRDN );
3579                                         oldVal.bv_val = strchr(oldRDN.bv_val, '=');
3580                                         oldRDN.bv_len = oldVal.bv_val - oldRDN.bv_val;
3581                                         ad = NULL;
3582                                         slap_bv2ad( &oldRDN, &ad, &rs->sr_text );
3583                                         dni->newDesc = ad;
3584
3585                                         /* A ModDN has happened, but in Refresh mode other
3586                                          * changes may have occurred before we picked it up.
3587                                          * So fallthru to regular Modify processing.
3588                                          */
3589                                 }
3590
3591                                 syncrepl_diff_entry( op, rs->sr_entry->e_attrs,
3592                                         dni->new_entry->e_attrs, &dni->mods, dni->modlist,
3593                                         is_ctx );
3594                         }
3595                 }
3596         } else if ( rs->sr_type == REP_RESULT ) {
3597                 if ( rs->sr_err == LDAP_SIZELIMIT_EXCEEDED ) {
3598                         Debug( LDAP_DEBUG_ANY,
3599                                 "dn_callback : consistency error - "
3600                                 "entryUUID is not unique\n", 0, 0, 0 );
3601                 }
3602         }
3603
3604         return LDAP_SUCCESS;
3605 }
3606
3607 static int
3608 nonpresent_callback(
3609         Operation*      op,
3610         SlapReply*      rs )
3611 {
3612         syncinfo_t *si = op->o_callback->sc_private;
3613         Attribute *a;
3614         int count = 0;
3615         struct berval* present_uuid = NULL;
3616         struct nonpresent_entry *np_entry;
3617
3618         if ( rs->sr_type == REP_RESULT ) {
3619                 count = avl_free( si->si_presentlist, ch_free );
3620                 si->si_presentlist = NULL;
3621
3622         } else if ( rs->sr_type == REP_SEARCH ) {
3623                 if ( !( si->si_refreshDelete & NP_DELETE_ONE ) ) {
3624                         a = attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_entryUUID );
3625
3626                         if ( a ) {
3627                                 present_uuid = avl_find( si->si_presentlist, &a->a_nvals[0],
3628                                         syncuuid_cmp );
3629                         }
3630
3631                         if ( LogTest( LDAP_DEBUG_SYNC ) ) {
3632                                 char buf[sizeof("rid=999 non")];
3633
3634                                 snprintf( buf, sizeof(buf), "%s %s", si->si_ridtxt,
3635                                         present_uuid ? "" : "non" );
3636
3637                                 Debug( LDAP_DEBUG_SYNC, "nonpresent_callback: %spresent UUID %s, dn %s\n",
3638                                         buf, a ? a->a_vals[0].bv_val : "<missing>", rs->sr_entry->e_name.bv_val );
3639                         }
3640
3641                         if ( a == NULL ) return 0;
3642                 }
3643
3644                 if ( present_uuid == NULL ) {
3645                         np_entry = (struct nonpresent_entry *)
3646                                 ch_calloc( 1, sizeof( struct nonpresent_entry ) );
3647                         np_entry->npe_name = ber_dupbv( NULL, &rs->sr_entry->e_name );
3648                         np_entry->npe_nname = ber_dupbv( NULL, &rs->sr_entry->e_nname );
3649                         LDAP_LIST_INSERT_HEAD( &si->si_nonpresentlist, np_entry, npe_link );
3650
3651                 } else {
3652                         avl_delete( &si->si_presentlist,
3653                                 &a->a_nvals[0], syncuuid_cmp );
3654                         ch_free( present_uuid );
3655                 }
3656         }
3657         return LDAP_SUCCESS;
3658 }
3659
3660 static int
3661 null_callback(
3662         Operation*      op,
3663         SlapReply*      rs )
3664 {
3665         if ( rs->sr_err != LDAP_SUCCESS &&
3666                 rs->sr_err != LDAP_REFERRAL &&
3667                 rs->sr_err != LDAP_ALREADY_EXISTS &&
3668                 rs->sr_err != LDAP_NO_SUCH_OBJECT &&
3669                 rs->sr_err != LDAP_NOT_ALLOWED_ON_NONLEAF )
3670         {
3671                 Debug( LDAP_DEBUG_ANY,
3672                         "null_callback : error code 0x%x\n",
3673                         rs->sr_err, 0, 0 );
3674         }
3675         return LDAP_SUCCESS;
3676 }
3677
3678 static struct berval *
3679 slap_uuidstr_from_normalized(
3680         struct berval* uuidstr,
3681         struct berval* normalized,
3682         void *ctx )
3683 {
3684 #if 0
3685         struct berval *new;
3686         unsigned char nibble;
3687         int i, d = 0;
3688
3689         if ( normalized == NULL ) return NULL;
3690         if ( normalized->bv_len != 16 ) return NULL;
3691
3692         if ( uuidstr ) {
3693                 new = uuidstr;
3694         } else {
3695                 new = (struct berval *)slap_sl_malloc( sizeof(struct berval), ctx );
3696                 if ( new == NULL ) {
3697                         return NULL;
3698                 }
3699         }
3700
3701         new->bv_len = 36;
3702
3703         if ( ( new->bv_val = slap_sl_malloc( new->bv_len + 1, ctx ) ) == NULL ) {
3704                 if ( new != uuidstr ) {
3705                         slap_sl_free( new, ctx );
3706                 }
3707                 return NULL;
3708         }
3709
3710         for ( i = 0; i < 16; i++ ) {
3711                 if ( i == 4 || i == 6 || i == 8 || i == 10 ) {
3712                         new->bv_val[(i<<1)+d] = '-';
3713                         d += 1;
3714                 }
3715
3716                 nibble = (normalized->bv_val[i] >> 4) & 0xF;
3717                 if ( nibble < 10 ) {
3718                         new->bv_val[(i<<1)+d] = nibble + '0';
3719                 } else {
3720                         new->bv_val[(i<<1)+d] = nibble - 10 + 'a';
3721                 }
3722
3723                 nibble = (normalized->bv_val[i]) & 0xF;
3724                 if ( nibble < 10 ) {
3725                         new->bv_val[(i<<1)+d+1] = nibble + '0';
3726                 } else {
3727                         new->bv_val[(i<<1)+d+1] = nibble - 10 + 'a';
3728                 }
3729         }
3730
3731         new->bv_val[new->bv_len] = '\0';
3732         return new;
3733 #endif
3734
3735         struct berval   *new;
3736         int             rc = 0;
3737
3738         if ( normalized == NULL ) return NULL;
3739         if ( normalized->bv_len != 16 ) return NULL;
3740
3741         if ( uuidstr ) {
3742                 new = uuidstr;
3743
3744         } else {
3745                 new = (struct berval *)slap_sl_malloc( sizeof(struct berval), ctx );
3746                 if ( new == NULL ) {
3747                         return NULL;
3748                 }
3749         }
3750
3751         new->bv_len = 36;
3752
3753         if ( ( new->bv_val = slap_sl_malloc( new->bv_len + 1, ctx ) ) == NULL ) {
3754                 rc = 1;
3755                 goto done;
3756         }
3757
3758         rc = lutil_uuidstr_from_normalized( normalized->bv_val,
3759                 normalized->bv_len, new->bv_val, new->bv_len + 1 );
3760
3761 done:;
3762         if ( rc == -1 ) {
3763                 if ( new != NULL ) {
3764                         if ( new->bv_val != NULL ) {
3765                                 slap_sl_free( new->bv_val, ctx );
3766                         }
3767
3768                         if ( new != uuidstr ) {
3769                                 slap_sl_free( new, ctx );
3770                         }
3771                 }
3772                 new = NULL;
3773
3774         } else {
3775                 new->bv_len = rc;
3776         }
3777
3778         return new;
3779 }
3780
3781 static int
3782 syncuuid_cmp( const void* v_uuid1, const void* v_uuid2 )
3783 {
3784         const struct berval *uuid1 = v_uuid1;
3785         const struct berval *uuid2 = v_uuid2;
3786         int rc = uuid1->bv_len - uuid2->bv_len;
3787         if ( rc ) return rc;
3788         return ( memcmp( uuid1->bv_val, uuid2->bv_val, uuid1->bv_len ) );
3789 }
3790
3791 void
3792 syncinfo_free( syncinfo_t *sie, int free_all )
3793 {
3794         syncinfo_t *si_next;
3795
3796         Debug( LDAP_DEBUG_TRACE, "syncinfo_free: %s\n",
3797                 sie->si_ridtxt, 0, 0 );
3798
3799         do {
3800                 si_next = sie->si_next;
3801
3802                 if ( sie->si_ld ) {
3803                         if ( sie->si_conn ) {
3804                                 connection_client_stop( sie->si_conn );
3805                                 sie->si_conn = NULL;
3806                         }
3807                         ldap_unbind_ext( sie->si_ld, NULL, NULL );
3808                 }
3809
3810                 if ( sie->si_re ) {
3811                         struct re_s             *re = sie->si_re;
3812                         sie->si_re = NULL;
3813
3814                         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
3815                         if ( ldap_pvt_runqueue_isrunning( &slapd_rq, re ) )
3816                                 ldap_pvt_runqueue_stoptask( &slapd_rq, re );
3817                         ldap_pvt_runqueue_remove( &slapd_rq, re );
3818                         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
3819                 }
3820
3821                 ldap_pvt_thread_mutex_destroy( &sie->si_mutex );
3822
3823                 bindconf_free( &sie->si_bindconf );
3824
3825                 if ( sie->si_filterstr.bv_val ) {
3826                         ch_free( sie->si_filterstr.bv_val );
3827                 }
3828                 if ( sie->si_filter ) {
3829                         filter_free( sie->si_filter );
3830                 }
3831                 if ( sie->si_logfilterstr.bv_val ) {
3832                         ch_free( sie->si_logfilterstr.bv_val );
3833                 }
3834                 if ( sie->si_base.bv_val ) {
3835                         ch_free( sie->si_base.bv_val );
3836                 }
3837                 if ( sie->si_logbase.bv_val ) {
3838                         ch_free( sie->si_logbase.bv_val );
3839                 }
3840                 if ( sie->si_be && SLAP_SYNC_SUBENTRY( sie->si_be )) {
3841                         ch_free( sie->si_contextdn.bv_val );
3842                 }
3843                 if ( sie->si_attrs ) {
3844                         int i = 0;
3845                         while ( sie->si_attrs[i] != NULL ) {
3846                                 ch_free( sie->si_attrs[i] );
3847                                 i++;
3848                         }
3849                         ch_free( sie->si_attrs );
3850                 }
3851                 if ( sie->si_exattrs ) {
3852                         int i = 0;
3853                         while ( sie->si_exattrs[i] != NULL ) {
3854                                 ch_free( sie->si_exattrs[i] );
3855                                 i++;
3856                         }
3857                         ch_free( sie->si_exattrs );
3858                 }
3859                 if ( sie->si_anlist ) {
3860                         int i = 0;
3861                         while ( sie->si_anlist[i].an_name.bv_val != NULL ) {
3862                                 ch_free( sie->si_anlist[i].an_name.bv_val );
3863                                 i++;
3864                         }
3865                         ch_free( sie->si_anlist );
3866                 }
3867                 if ( sie->si_exanlist ) {
3868                         int i = 0;
3869                         while ( sie->si_exanlist[i].an_name.bv_val != NULL ) {
3870                                 ch_free( sie->si_exanlist[i].an_name.bv_val );
3871                                 i++;
3872                         }
3873                         ch_free( sie->si_exanlist );
3874                 }
3875                 if ( sie->si_retryinterval ) {
3876                         ch_free( sie->si_retryinterval );
3877                 }
3878                 if ( sie->si_retrynum ) {
3879                         ch_free( sie->si_retrynum );
3880                 }
3881                 if ( sie->si_retrynum_init ) {
3882                         ch_free( sie->si_retrynum_init );
3883                 }
3884                 slap_sync_cookie_free( &sie->si_syncCookie, 0 );
3885                 if ( sie->si_presentlist ) {
3886                     avl_free( sie->si_presentlist, ch_free );
3887                 }
3888                 while ( !LDAP_LIST_EMPTY( &sie->si_nonpresentlist ) ) {
3889                         struct nonpresent_entry* npe;
3890                         npe = LDAP_LIST_FIRST( &sie->si_nonpresentlist );
3891                         LDAP_LIST_REMOVE( npe, npe_link );
3892                         if ( npe->npe_name ) {
3893                                 if ( npe->npe_name->bv_val ) {
3894                                         ch_free( npe->npe_name->bv_val );
3895                                 }
3896                                 ch_free( npe->npe_name );
3897                         }
3898                         if ( npe->npe_nname ) {
3899                                 if ( npe->npe_nname->bv_val ) {
3900                                         ch_free( npe->npe_nname->bv_val );
3901                                 }
3902                                 ch_free( npe->npe_nname );
3903                         }
3904                         ch_free( npe );
3905                 }
3906                 if ( sie->si_cookieState ) {
3907                         sie->si_cookieState->cs_ref--;
3908                         if ( !sie->si_cookieState->cs_ref ) {
3909                                 ch_free( sie->si_cookieState->cs_sids );
3910                                 ber_bvarray_free( sie->si_cookieState->cs_vals );
3911                                 ldap_pvt_thread_mutex_destroy( &sie->si_cookieState->cs_mutex );
3912                                 ch_free( sie->si_cookieState->cs_psids );
3913                                 ber_bvarray_free( sie->si_cookieState->cs_pvals );
3914                                 ldap_pvt_thread_mutex_destroy( &sie->si_cookieState->cs_pmutex );
3915                                 ch_free( sie->si_cookieState );
3916                         }
3917                 }
3918                 ch_free( sie );
3919                 sie = si_next;
3920         } while ( free_all && si_next );
3921 }
3922
3923
3924
3925 /* NOTE: used & documented in slapd.conf(5) */
3926 #define IDSTR                   "rid"
3927 #define PROVIDERSTR             "provider"
3928 #define SCHEMASTR               "schemachecking"
3929 #define FILTERSTR               "filter"
3930 #define SEARCHBASESTR           "searchbase"
3931 #define SCOPESTR                "scope"
3932 #define ATTRSONLYSTR            "attrsonly"
3933 #define ATTRSSTR                "attrs"
3934 #define TYPESTR                 "type"
3935 #define INTERVALSTR             "interval"
3936 #define RETRYSTR                "retry"
3937 #define SLIMITSTR               "sizelimit"
3938 #define TLIMITSTR               "timelimit"
3939 #define SYNCDATASTR             "syncdata"
3940 #define LOGBASESTR              "logbase"
3941 #define LOGFILTERSTR    "logfilter"
3942
3943 /* FIXME: undocumented */
3944 #define EXATTRSSTR              "exattrs"
3945 #define MANAGEDSAITSTR          "manageDSAit"
3946
3947 /* mandatory */
3948 enum {
3949         GOT_RID                 = 0x00000001U,
3950         GOT_PROVIDER            = 0x00000002U,
3951         GOT_SCHEMACHECKING      = 0x00000004U,
3952         GOT_FILTER              = 0x00000008U,
3953         GOT_SEARCHBASE          = 0x00000010U,
3954         GOT_SCOPE               = 0x00000020U,
3955         GOT_ATTRSONLY           = 0x00000040U,
3956         GOT_ATTRS               = 0x00000080U,
3957         GOT_TYPE                = 0x00000100U,
3958         GOT_INTERVAL            = 0x00000200U,
3959         GOT_RETRY               = 0x00000400U,
3960         GOT_SLIMIT              = 0x00000800U,
3961         GOT_TLIMIT              = 0x00001000U,
3962         GOT_SYNCDATA            = 0x00002000U,
3963         GOT_LOGBASE             = 0x00004000U,
3964         GOT_LOGFILTER           = 0x00008000U,
3965         GOT_EXATTRS             = 0x00010000U,
3966         GOT_MANAGEDSAIT         = 0x00020000U,
3967         GOT_BINDCONF            = 0x00040000U,
3968
3969 /* check */
3970         GOT_REQUIRED            = (GOT_RID|GOT_PROVIDER|GOT_SEARCHBASE)
3971 };
3972
3973 static slap_verbmasks datamodes[] = {
3974         { BER_BVC("default"), SYNCDATA_DEFAULT },
3975         { BER_BVC("accesslog"), SYNCDATA_ACCESSLOG },
3976         { BER_BVC("changelog"), SYNCDATA_CHANGELOG },
3977         { BER_BVNULL, 0 }
3978 };
3979
3980 static int
3981 parse_syncrepl_retry(
3982         ConfigArgs      *c,
3983         char            *arg,
3984         syncinfo_t      *si )
3985 {
3986         char **retry_list;
3987         int j, k, n;
3988         int use_default = 0;
3989
3990         char *val = arg + STRLENOF( RETRYSTR "=" );
3991         if ( strcasecmp( val, "undefined" ) == 0 ) {
3992                 val = "3600 +";
3993                 use_default = 1;
3994         }
3995
3996         retry_list = (char **) ch_calloc( 1, sizeof( char * ) );
3997         retry_list[0] = NULL;
3998
3999         slap_str2clist( &retry_list, val, " ,\t" );
4000
4001         for ( k = 0; retry_list && retry_list[k]; k++ ) ;
4002         n = k / 2;
4003         if ( k % 2 ) {
4004                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4005                         "Error: incomplete syncrepl retry list" );
4006                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4007                 for ( k = 0; retry_list && retry_list[k]; k++ ) {
4008                         ch_free( retry_list[k] );
4009                 }
4010                 ch_free( retry_list );
4011                 return 1;
4012         }
4013         si->si_retryinterval = (time_t *) ch_calloc( n + 1, sizeof( time_t ) );
4014         si->si_retrynum = (int *) ch_calloc( n + 1, sizeof( int ) );
4015         si->si_retrynum_init = (int *) ch_calloc( n + 1, sizeof( int ) );
4016         for ( j = 0; j < n; j++ ) {
4017                 unsigned long   t;
4018                 if ( lutil_atoul( &t, retry_list[j*2] ) != 0 ) {
4019                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
4020                                 "Error: invalid retry interval \"%s\" (#%d)",
4021                                 retry_list[j*2], j );
4022                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4023                         /* do some cleanup */
4024                         return 1;
4025                 }
4026                 si->si_retryinterval[j] = (time_t)t;
4027                 if ( *retry_list[j*2+1] == '+' ) {
4028                         si->si_retrynum_init[j] = RETRYNUM_FOREVER;
4029                         si->si_retrynum[j] = RETRYNUM_FOREVER;
4030                         j++;
4031                         break;
4032                 } else {
4033                         if ( lutil_atoi( &si->si_retrynum_init[j], retry_list[j*2+1] ) != 0
4034                                         || si->si_retrynum_init[j] <= 0 )
4035                         {
4036                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4037                                         "Error: invalid initial retry number \"%s\" (#%d)",
4038                                         retry_list[j*2+1], j );
4039                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4040                                 /* do some cleanup */
4041                                 return 1;
4042                         }
4043                         if ( lutil_atoi( &si->si_retrynum[j], retry_list[j*2+1] ) != 0
4044                                         || si->si_retrynum[j] <= 0 )
4045                         {
4046                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4047                                         "Error: invalid retry number \"%s\" (#%d)",
4048                                         retry_list[j*2+1], j );
4049                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4050                                 /* do some cleanup */
4051                                 return 1;
4052                         }
4053                 }
4054         }
4055         if ( j < 1 || si->si_retrynum_init[j-1] != RETRYNUM_FOREVER ) {
4056                 Debug( LDAP_DEBUG_CONFIG,
4057                         "%s: syncrepl will eventually stop retrying; the \"retry\" parameter should end with a '+'.\n",
4058                         c->log, 0, 0 );
4059         }
4060
4061         si->si_retrynum_init[j] = RETRYNUM_TAIL;
4062         si->si_retrynum[j] = RETRYNUM_TAIL;
4063         si->si_retryinterval[j] = 0;
4064
4065         for ( k = 0; retry_list && retry_list[k]; k++ ) {
4066                 ch_free( retry_list[k] );
4067         }
4068         ch_free( retry_list );
4069         if ( !use_default ) {
4070                 si->si_got |= GOT_RETRY;
4071         }
4072
4073         return 0;
4074 }
4075
4076 static int
4077 parse_syncrepl_line(
4078         ConfigArgs      *c,
4079         syncinfo_t      *si )
4080 {
4081         int     i;
4082         char    *val;
4083
4084         for ( i = 1; i < c->argc; i++ ) {
4085                 if ( !strncasecmp( c->argv[ i ], IDSTR "=",
4086                                         STRLENOF( IDSTR "=" ) ) )
4087                 {
4088                         int tmp;
4089                         /* '\0' string terminator accounts for '=' */
4090                         val = c->argv[ i ] + STRLENOF( IDSTR "=" );
4091                         if ( lutil_atoi( &tmp, val ) != 0 ) {
4092                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4093                                         "Error: parse_syncrepl_line: "
4094                                         "unable to parse syncrepl id \"%s\"", val );
4095                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4096                                 return -1;
4097                         }
4098                         if ( tmp > SLAP_SYNC_RID_MAX || tmp < 0 ) {
4099                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4100                                         "Error: parse_syncrepl_line: "
4101                                         "syncrepl id %d is out of range [0..%d]", tmp, SLAP_SYNC_RID_MAX );
4102                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4103                                 return -1;
4104                         }
4105                         si->si_rid = tmp;
4106                         sprintf( si->si_ridtxt, IDSTR "=%03d", si->si_rid );
4107                         si->si_got |= GOT_RID;
4108                 } else if ( !strncasecmp( c->argv[ i ], PROVIDERSTR "=",
4109                                         STRLENOF( PROVIDERSTR "=" ) ) )
4110                 {
4111                         val = c->argv[ i ] + STRLENOF( PROVIDERSTR "=" );
4112                         ber_str2bv( val, 0, 1, &si->si_bindconf.sb_uri );
4113 #ifdef HAVE_TLS
4114                         if ( ldap_is_ldaps_url( val ))
4115                                 si->si_bindconf.sb_tls_do_init = 1;
4116 #endif
4117                         si->si_got |= GOT_PROVIDER;
4118                 } else if ( !strncasecmp( c->argv[ i ], SCHEMASTR "=",
4119                                         STRLENOF( SCHEMASTR "=" ) ) )
4120                 {
4121                         val = c->argv[ i ] + STRLENOF( SCHEMASTR "=" );
4122                         if ( !strncasecmp( val, "on", STRLENOF( "on" ) ) ) {
4123                                 si->si_schemachecking = 1;
4124                         } else if ( !strncasecmp( val, "off", STRLENOF( "off" ) ) ) {
4125                                 si->si_schemachecking = 0;
4126                         } else {
4127                                 si->si_schemachecking = 1;
4128                         }
4129                         si->si_got |= GOT_SCHEMACHECKING;
4130                 } else if ( !strncasecmp( c->argv[ i ], FILTERSTR "=",
4131                                         STRLENOF( FILTERSTR "=" ) ) )
4132                 {
4133                         val = c->argv[ i ] + STRLENOF( FILTERSTR "=" );
4134                         if ( si->si_filterstr.bv_val )
4135                                 ch_free( si->si_filterstr.bv_val );
4136                         ber_str2bv( val, 0, 1, &si->si_filterstr );
4137                         si->si_got |= GOT_FILTER;
4138                 } else if ( !strncasecmp( c->argv[ i ], LOGFILTERSTR "=",
4139                                         STRLENOF( LOGFILTERSTR "=" ) ) )
4140                 {
4141                         val = c->argv[ i ] + STRLENOF( LOGFILTERSTR "=" );
4142                         if ( si->si_logfilterstr.bv_val )
4143                                 ch_free( si->si_logfilterstr.bv_val );
4144                         ber_str2bv( val, 0, 1, &si->si_logfilterstr );
4145                         si->si_got |= GOT_LOGFILTER;
4146                 } else if ( !strncasecmp( c->argv[ i ], SEARCHBASESTR "=",
4147                                         STRLENOF( SEARCHBASESTR "=" ) ) )
4148                 {
4149                         struct berval   bv;
4150                         int             rc;
4151
4152                         val = c->argv[ i ] + STRLENOF( SEARCHBASESTR "=" );
4153                         if ( si->si_base.bv_val ) {
4154                                 ch_free( si->si_base.bv_val );
4155                         }
4156                         ber_str2bv( val, 0, 0, &bv );
4157                         rc = dnNormalize( 0, NULL, NULL, &bv, &si->si_base, NULL );
4158                         if ( rc != LDAP_SUCCESS ) {
4159                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4160                                         "Invalid base DN \"%s\": %d (%s)",
4161                                         val, rc, ldap_err2string( rc ) );
4162                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4163                                 return -1;
4164                         }
4165                         if ( !be_issubordinate( c->be, &si->si_base ) ) {
4166                                 ch_free( si->si_base.bv_val );
4167                                 BER_BVZERO( &si->si_base );
4168                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4169                                         "Base DN \"%s\" is not within the database naming context",
4170                                         val );
4171                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4172                                 return -1;
4173                         }
4174                         si->si_got |= GOT_SEARCHBASE;
4175                 } else if ( !strncasecmp( c->argv[ i ], LOGBASESTR "=",
4176                                         STRLENOF( LOGBASESTR "=" ) ) )
4177                 {
4178                         struct berval   bv;
4179                         int             rc;
4180
4181                         val = c->argv[ i ] + STRLENOF( LOGBASESTR "=" );
4182                         if ( si->si_logbase.bv_val ) {
4183                                 ch_free( si->si_logbase.bv_val );
4184                         }
4185                         ber_str2bv( val, 0, 0, &bv );
4186                         rc = dnNormalize( 0, NULL, NULL, &bv, &si->si_logbase, NULL );
4187                         if ( rc != LDAP_SUCCESS ) {
4188                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4189                                         "Invalid logbase DN \"%s\": %d (%s)",
4190                                         val, rc, ldap_err2string( rc ) );
4191                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4192                                 return -1;
4193                         }
4194                         si->si_got |= GOT_LOGBASE;
4195                 } else if ( !strncasecmp( c->argv[ i ], SCOPESTR "=",
4196                                         STRLENOF( SCOPESTR "=" ) ) )
4197                 {
4198                         int j;
4199                         val = c->argv[ i ] + STRLENOF( SCOPESTR "=" );
4200                         j = ldap_pvt_str2scope( val );
4201                         if ( j < 0 ) {
4202                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4203                                         "Error: parse_syncrepl_line: "
4204                                         "unknown scope \"%s\"", val);
4205                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4206                                 return -1;
4207                         }
4208                         si->si_scope = j;
4209                         si->si_got |= GOT_SCOPE;
4210                 } else if ( !strncasecmp( c->argv[ i ], ATTRSONLYSTR,
4211                                         STRLENOF( ATTRSONLYSTR ) ) )
4212                 {
4213                         si->si_attrsonly = 1;
4214                         si->si_got |= GOT_ATTRSONLY;
4215                 } else if ( !strncasecmp( c->argv[ i ], ATTRSSTR "=",
4216                                         STRLENOF( ATTRSSTR "=" ) ) )
4217                 {
4218                         val = c->argv[ i ] + STRLENOF( ATTRSSTR "=" );
4219                         if ( !strncasecmp( val, ":include:", STRLENOF(":include:") ) ) {
4220                                 char *attr_fname;
4221                                 attr_fname = ch_strdup( val + STRLENOF(":include:") );
4222                                 si->si_anlist = file2anlist( si->si_anlist, attr_fname, " ,\t" );
4223                                 if ( si->si_anlist == NULL ) {
4224                                         ch_free( attr_fname );
4225                                         return -1;
4226                                 }
4227                                 si->si_anfile = attr_fname;
4228                         } else {
4229                                 char *str, *s, *next;
4230                                 const char *delimstr = " ,\t";
4231                                 str = ch_strdup( val );
4232                                 for ( s = ldap_pvt_strtok( str, delimstr, &next );
4233                                                 s != NULL;
4234                                                 s = ldap_pvt_strtok( NULL, delimstr, &next ) )
4235                                 {
4236                                         if ( strlen(s) == 1 && *s == '*' ) {
4237                                                 si->si_allattrs = 1;
4238                                                 val[ s - str ] = delimstr[0];
4239                                         }
4240                                         if ( strlen(s) == 1 && *s == '+' ) {
4241                                                 si->si_allopattrs = 1;
4242                                                 val [ s - str ] = delimstr[0];
4243                                         }
4244                                 }
4245                                 ch_free( str );
4246                                 si->si_anlist = str2anlist( si->si_anlist, val, " ,\t" );
4247                                 if ( si->si_anlist == NULL ) {
4248                                         return -1;
4249                                 }
4250                         }
4251                         si->si_got |= GOT_ATTRS;
4252                 } else if ( !strncasecmp( c->argv[ i ], EXATTRSSTR "=",
4253                                         STRLENOF( EXATTRSSTR "=" ) ) )
4254                 {
4255                         val = c->argv[ i ] + STRLENOF( EXATTRSSTR "=" );
4256                         if ( !strncasecmp( val, ":include:", STRLENOF(":include:") ) ) {
4257                                 char *attr_fname;
4258                                 attr_fname = ch_strdup( val + STRLENOF(":include:") );
4259                                 si->si_exanlist = file2anlist(
4260                                         si->si_exanlist, attr_fname, " ,\t" );
4261                                 if ( si->si_exanlist == NULL ) {
4262                                         ch_free( attr_fname );
4263                                         return -1;
4264                                 }
4265                                 ch_free( attr_fname );
4266                         } else {
4267                                 si->si_exanlist = str2anlist( si->si_exanlist, val, " ,\t" );
4268                                 if ( si->si_exanlist == NULL ) {
4269                                         return -1;
4270                                 }
4271                         }
4272                         si->si_got |= GOT_EXATTRS;
4273                 } else if ( !strncasecmp( c->argv[ i ], TYPESTR "=",
4274                                         STRLENOF( TYPESTR "=" ) ) )
4275                 {
4276                         val = c->argv[ i ] + STRLENOF( TYPESTR "=" );
4277                         if ( !strncasecmp( val, "refreshOnly",
4278                                                 STRLENOF("refreshOnly") ) )
4279                         {
4280                                 si->si_type = si->si_ctype = LDAP_SYNC_REFRESH_ONLY;
4281                         } else if ( !strncasecmp( val, "refreshAndPersist",
4282                                                 STRLENOF("refreshAndPersist") ) )
4283                         {
4284                                 si->si_type = si->si_ctype = LDAP_SYNC_REFRESH_AND_PERSIST;
4285                                 si->si_interval = 60;
4286                         } else {
4287                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4288                                         "Error: parse_syncrepl_line: "
4289                                         "unknown sync type \"%s\"", val);
4290                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4291                                 return -1;
4292                         }
4293                         si->si_got |= GOT_TYPE;
4294                 } else if ( !strncasecmp( c->argv[ i ], INTERVALSTR "=",
4295                                         STRLENOF( INTERVALSTR "=" ) ) )
4296                 {
4297                         val = c->argv[ i ] + STRLENOF( INTERVALSTR "=" );
4298                         if ( si->si_type == LDAP_SYNC_REFRESH_AND_PERSIST ) {
4299                                 si->si_interval = 0;
4300                         } else if ( strchr( val, ':' ) != NULL ) {
4301                                 char *next, *ptr = val;
4302                                 int dd, hh, mm, ss;
4303
4304                                 dd = strtol( ptr, &next, 10 );
4305                                 if ( next == ptr || next[0] != ':' || dd < 0 ) {
4306                                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
4307                                                 "Error: parse_syncrepl_line: "
4308                                                 "invalid interval \"%s\", unable to parse days", val );
4309                                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4310                                         return -1;
4311                                 }
4312                                 ptr = next + 1;
4313                                 hh = strtol( ptr, &next, 10 );
4314                                 if ( next == ptr || next[0] != ':' || hh < 0 || hh > 24 ) {
4315                                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
4316                                                 "Error: parse_syncrepl_line: "
4317                                                 "invalid interval \"%s\", unable to parse hours", val );
4318                                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4319                                         return -1;
4320                                 }
4321                                 ptr = next + 1;
4322                                 mm = strtol( ptr, &next, 10 );
4323                                 if ( next == ptr || next[0] != ':' || mm < 0 || mm > 60 ) {
4324                                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
4325                                                 "Error: parse_syncrepl_line: "
4326                                                 "invalid interval \"%s\", unable to parse minutes", val );
4327                                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4328                                         return -1;
4329                                 }
4330                                 ptr = next + 1;
4331                                 ss = strtol( ptr, &next, 10 );
4332                                 if ( next == ptr || next[0] != '\0' || ss < 0 || ss > 60 ) {
4333                                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
4334                                                 "Error: parse_syncrepl_line: "
4335                                                 "invalid interval \"%s\", unable to parse seconds", val );
4336                                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4337                                         return -1;
4338                                 }
4339                                 si->si_interval = (( dd * 24 + hh ) * 60 + mm ) * 60 + ss;
4340                         } else {
4341                                 unsigned long   t;
4342
4343                                 if ( lutil_parse_time( val, &t ) != 0 ) {
4344                                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
4345                                                 "Error: parse_syncrepl_line: "
4346                                                 "invalid interval \"%s\"", val );
4347                                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4348                                         return -1;
4349                                 }
4350                                 si->si_interval = (time_t)t;
4351                         }
4352                         if ( si->si_interval < 0 ) {
4353                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4354                                         "Error: parse_syncrepl_line: "
4355                                         "invalid interval \"%ld\"",
4356                                         (long) si->si_interval);
4357                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4358                                 return -1;
4359                         }
4360                         si->si_got |= GOT_INTERVAL;
4361                 } else if ( !strncasecmp( c->argv[ i ], RETRYSTR "=",
4362                                         STRLENOF( RETRYSTR "=" ) ) )
4363                 {
4364                         if ( parse_syncrepl_retry( c, c->argv[ i ], si ) ) {
4365                                 return 1;
4366                         }
4367                 } else if ( !strncasecmp( c->argv[ i ], MANAGEDSAITSTR "=",
4368                                         STRLENOF( MANAGEDSAITSTR "=" ) ) )
4369                 {
4370                         val = c->argv[ i ] + STRLENOF( MANAGEDSAITSTR "=" );
4371                         if ( lutil_atoi( &si->si_manageDSAit, val ) != 0
4372                                 || si->si_manageDSAit < 0 || si->si_manageDSAit > 1 )
4373                         {
4374                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4375                                         "invalid manageDSAit value \"%s\".\n",
4376                                         val );
4377                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4378                                 return 1;
4379                         }
4380                         si->si_got |= GOT_MANAGEDSAIT;
4381                 } else if ( !strncasecmp( c->argv[ i ], SLIMITSTR "=",
4382                                         STRLENOF( SLIMITSTR "=") ) )
4383                 {
4384                         val = c->argv[ i ] + STRLENOF( SLIMITSTR "=" );
4385                         if ( strcasecmp( val, "unlimited" ) == 0 ) {
4386                                 si->si_slimit = 0;
4387
4388                         } else if ( lutil_atoi( &si->si_slimit, val ) != 0 || si->si_slimit < 0 ) {
4389                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4390                                         "invalid size limit value \"%s\".\n",
4391                                         val );
4392                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4393                                 return 1;
4394                         }
4395                         si->si_got |= GOT_SLIMIT;
4396                 } else if ( !strncasecmp( c->argv[ i ], TLIMITSTR "=",
4397                                         STRLENOF( TLIMITSTR "=" ) ) )
4398                 {
4399                         val = c->argv[ i ] + STRLENOF( TLIMITSTR "=" );
4400                         if ( strcasecmp( val, "unlimited" ) == 0 ) {
4401                                 si->si_tlimit = 0;
4402
4403                         } else if ( lutil_atoi( &si->si_tlimit, val ) != 0 || si->si_tlimit < 0 ) {
4404                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4405                                         "invalid time limit value \"%s\".\n",
4406                                         val );
4407                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4408                                 return 1;
4409                         }
4410                         si->si_got |= GOT_TLIMIT;
4411                 } else if ( !strncasecmp( c->argv[ i ], SYNCDATASTR "=",
4412                                         STRLENOF( SYNCDATASTR "=" ) ) )
4413                 {
4414                         val = c->argv[ i ] + STRLENOF( SYNCDATASTR "=" );
4415                         si->si_syncdata = verb_to_mask( val, datamodes );
4416                         si->si_got |= GOT_SYNCDATA;
4417                 } else if ( bindconf_parse( c->argv[i], &si->si_bindconf ) ) {
4418                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
4419                                 "Error: parse_syncrepl_line: "
4420                                 "unable to parse \"%s\"\n", c->argv[ i ] );
4421                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4422                         return -1;
4423                 }
4424                 si->si_got |= GOT_BINDCONF;
4425         }
4426
4427         if ( ( si->si_got & GOT_REQUIRED ) != GOT_REQUIRED ) {
4428                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4429                         "Error: Malformed \"syncrepl\" line in slapd config file, missing%s%s%s",
4430                         si->si_got & GOT_RID ? "" : " "IDSTR,
4431                         si->si_got & GOT_PROVIDER ? "" : " "PROVIDERSTR,
4432                         si->si_got & GOT_SEARCHBASE ? "" : " "SEARCHBASESTR );
4433                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4434                 return -1;
4435         }
4436
4437         if ( !( si->si_got & GOT_RETRY ) ) {
4438                 Debug( LDAP_DEBUG_ANY, "syncrepl %s " SEARCHBASESTR "=\"%s\": no retry defined, using default\n",
4439                         si->si_ridtxt, c->be->be_suffix ? c->be->be_suffix[ 0 ].bv_val : "(null)", 0 );
4440                 if ( si->si_retryinterval == NULL ) {
4441                         if ( parse_syncrepl_retry( c, "retry=undefined", si ) ) {
4442                                 return 1;
4443                         }
4444                 }
4445         }
4446
4447         si->si_filter = str2filter( si->si_filterstr.bv_val );
4448         if ( si->si_filter == NULL ) {
4449                 Debug( LDAP_DEBUG_ANY, "syncrepl %s " SEARCHBASESTR "=\"%s\": unable to parse filter=\"%s\"\n",
4450                         si->si_ridtxt, c->be->be_suffix ? c->be->be_suffix[ 0 ].bv_val : "(null)", si->si_filterstr.bv_val );
4451                 return 1;
4452         }
4453
4454         return 0;
4455 }
4456
4457 static int
4458 add_syncrepl(
4459         ConfigArgs *c )
4460 {
4461         syncinfo_t *si;
4462         int     rc = 0;
4463
4464         if ( !( c->be->be_search && c->be->be_add && c->be->be_modify && c->be->be_delete ) ) {
4465                 snprintf( c->cr_msg, sizeof(c->cr_msg), "database %s does not support "
4466                         "operations required for syncrepl", c->be->be_type );
4467                 Debug( LDAP_DEBUG_ANY, "%s: %s\n", c->log, c->cr_msg, 0 );
4468                 return 1;
4469         }
4470         if ( BER_BVISEMPTY( &c->be->be_rootdn ) ) {
4471                 strcpy( c->cr_msg, "rootDN must be defined before syncrepl may be used" );
4472                 Debug( LDAP_DEBUG_ANY, "%s: %s\n", c->log, c->cr_msg, 0 );
4473                 return 1;
4474         }
4475         si = (syncinfo_t *) ch_calloc( 1, sizeof( syncinfo_t ) );
4476
4477         if ( si == NULL ) {
4478                 Debug( LDAP_DEBUG_ANY, "out of memory in add_syncrepl\n", 0, 0, 0 );
4479                 return 1;
4480         }
4481
4482         si->si_bindconf.sb_tls = SB_TLS_OFF;
4483         si->si_bindconf.sb_method = LDAP_AUTH_SIMPLE;
4484         si->si_schemachecking = 0;
4485         ber_str2bv( "(objectclass=*)", STRLENOF("(objectclass=*)"), 1,
4486                 &si->si_filterstr );
4487         si->si_base.bv_val = NULL;
4488         si->si_scope = LDAP_SCOPE_SUBTREE;
4489         si->si_attrsonly = 0;
4490         si->si_anlist = (AttributeName *) ch_calloc( 1, sizeof( AttributeName ) );
4491         si->si_exanlist = (AttributeName *) ch_calloc( 1, sizeof( AttributeName ) );
4492         si->si_attrs = NULL;
4493         si->si_allattrs = 0;
4494         si->si_allopattrs = 0;
4495         si->si_exattrs = NULL;
4496         si->si_type = si->si_ctype = LDAP_SYNC_REFRESH_ONLY;
4497         si->si_interval = 86400;
4498         si->si_retryinterval = NULL;
4499         si->si_retrynum_init = NULL;
4500         si->si_retrynum = NULL;
4501         si->si_manageDSAit = 0;
4502         si->si_tlimit = 0;
4503         si->si_slimit = 0;
4504
4505         si->si_presentlist = NULL;
4506         LDAP_LIST_INIT( &si->si_nonpresentlist );
4507         ldap_pvt_thread_mutex_init( &si->si_mutex );
4508
4509         rc = parse_syncrepl_line( c, si );
4510
4511         if ( rc == 0 ) {
4512                 LDAPURLDesc *lud;
4513
4514                 /* Must be LDAPv3 because we need controls */
4515                 switch ( si->si_bindconf.sb_version ) {
4516                 case 0:
4517                         /* not explicitly set */
4518                         si->si_bindconf.sb_version = LDAP_VERSION3;
4519                         break;
4520                 case 3:
4521                         /* explicitly set */
4522                         break;
4523                 default:
4524                         Debug( LDAP_DEBUG_ANY,
4525                                 "version %d incompatible with syncrepl\n",
4526                                 si->si_bindconf.sb_version, 0, 0 );
4527                         syncinfo_free( si, 0 );
4528                         return 1;
4529                 }
4530
4531                 if ( ldap_url_parse( si->si_bindconf.sb_uri.bv_val, &lud )) {
4532                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
4533                                 "<%s> invalid URL", c->argv[0] );
4534                         Debug( LDAP_DEBUG_ANY, "%s: %s %s\n",
4535                                 c->log, c->cr_msg, si->si_bindconf.sb_uri.bv_val );
4536                         return 1;
4537                 }
4538
4539                 si->si_be = c->be;
4540                 if ( slapMode & SLAP_SERVER_MODE ) {
4541                         int isMe = 0;
4542                         /* check if consumer points to current server and database.
4543                          * If so, ignore this configuration.
4544                          */
4545                         if ( !SLAP_DBHIDDEN( c->be ) ) {
4546                                 int i;
4547                                 /* if searchbase doesn't match current DB suffix,
4548                                  * assume it's different
4549                                  */
4550                                 for ( i=0; !BER_BVISNULL( &c->be->be_nsuffix[i] ); i++ ) {
4551                                         if ( bvmatch( &si->si_base, &c->be->be_nsuffix[i] )) {
4552                                                 isMe = 1;
4553                                                 break;
4554                                         }
4555                                 }
4556                                 /* if searchbase matches, see if URLs match */
4557                                 if ( isMe && config_check_my_url( si->si_bindconf.sb_uri.bv_val,
4558                                                 lud ) == NULL )
4559                                         isMe = 0;
4560                         }
4561
4562                         if ( !isMe ) {
4563                                 init_syncrepl( si );
4564                                 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
4565                                 si->si_re = ldap_pvt_runqueue_insert( &slapd_rq,
4566                                         si->si_interval, do_syncrepl, si, "do_syncrepl",
4567                                         si->si_ridtxt );
4568                                 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
4569                                 if ( si->si_re )
4570                                         rc = config_sync_shadow( c ) ? -1 : 0;
4571                                 else
4572                                         rc = -1;
4573                         }
4574                 } else {
4575                         /* mirrormode still needs to see this flag in tool mode */
4576                         rc = config_sync_shadow( c ) ? -1 : 0;
4577                 }
4578                 ldap_free_urldesc( lud );
4579         }
4580
4581 #ifdef HAVE_TLS
4582         /* Use main slapd defaults */
4583         bindconf_tls_defaults( &si->si_bindconf );
4584 #endif
4585         if ( rc < 0 ) {
4586                 Debug( LDAP_DEBUG_ANY, "failed to add syncinfo\n", 0, 0, 0 );
4587                 syncinfo_free( si, 0 );
4588                 return 1;
4589         } else {
4590                 Debug( LDAP_DEBUG_CONFIG,
4591                         "Config: ** successfully added syncrepl \"%s\"\n",
4592                         BER_BVISNULL( &si->si_bindconf.sb_uri ) ?
4593                         "(null)" : si->si_bindconf.sb_uri.bv_val, 0, 0 );
4594                 if ( c->be->be_syncinfo ) {
4595                         syncinfo_t *sip;
4596
4597                         si->si_cookieState = c->be->be_syncinfo->si_cookieState;
4598
4599                         /* add new syncrepl to end of list (same order as when deleting) */
4600                         for ( sip = c->be->be_syncinfo; sip->si_next; sip = sip->si_next );
4601                         sip->si_next = si;
4602                 } else {
4603                         si->si_cookieState = ch_calloc( 1, sizeof( cookie_state ));
4604                         ldap_pvt_thread_mutex_init( &si->si_cookieState->cs_mutex );
4605                         ldap_pvt_thread_mutex_init( &si->si_cookieState->cs_pmutex );
4606
4607                         c->be->be_syncinfo = si;
4608                 }
4609                 si->si_cookieState->cs_ref++;
4610
4611                 si->si_next = NULL;
4612
4613                 return 0;
4614         }
4615 }
4616
4617 static void
4618 syncrepl_unparse( syncinfo_t *si, struct berval *bv )
4619 {
4620         struct berval bc, uri, bs;
4621         char buf[BUFSIZ*2], *ptr;
4622         ber_len_t len;
4623         int i;
4624 #       define WHATSLEFT        ((ber_len_t) (&buf[sizeof( buf )] - ptr))
4625
4626         BER_BVZERO( bv );
4627
4628         /* temporarily inhibit bindconf from printing URI */
4629         uri = si->si_bindconf.sb_uri;
4630         BER_BVZERO( &si->si_bindconf.sb_uri );
4631         si->si_bindconf.sb_version = 0;
4632         bindconf_unparse( &si->si_bindconf, &bc );
4633         si->si_bindconf.sb_uri = uri;
4634         si->si_bindconf.sb_version = LDAP_VERSION3;
4635
4636         ptr = buf;
4637         assert( si->si_rid >= 0 && si->si_rid <= SLAP_SYNC_RID_MAX );
4638         len = snprintf( ptr, WHATSLEFT, IDSTR "=%03d " PROVIDERSTR "=%s",
4639                 si->si_rid, si->si_bindconf.sb_uri.bv_val );
4640         if ( len >= sizeof( buf ) ) return;
4641         ptr += len;
4642         if ( !BER_BVISNULL( &bc ) ) {
4643                 if ( WHATSLEFT <= bc.bv_len ) {
4644                         free( bc.bv_val );
4645                         return;
4646                 }
4647                 ptr = lutil_strcopy( ptr, bc.bv_val );
4648                 free( bc.bv_val );
4649         }
4650         if ( !BER_BVISEMPTY( &si->si_filterstr ) ) {
4651                 if ( WHATSLEFT <= STRLENOF( " " FILTERSTR "=\"" "\"" ) + si->si_filterstr.bv_len ) return;
4652                 ptr = lutil_strcopy( ptr, " " FILTERSTR "=\"" );
4653                 ptr = lutil_strcopy( ptr, si->si_filterstr.bv_val );
4654                 *ptr++ = '"';
4655         }
4656         if ( !BER_BVISNULL( &si->si_base ) ) {
4657                 if ( WHATSLEFT <= STRLENOF( " " SEARCHBASESTR "=\"" "\"" ) + si->si_base.bv_len ) return;
4658                 ptr = lutil_strcopy( ptr, " " SEARCHBASESTR "=\"" );
4659                 ptr = lutil_strcopy( ptr, si->si_base.bv_val );
4660                 *ptr++ = '"';
4661         }
4662         if ( !BER_BVISEMPTY( &si->si_logfilterstr ) ) {
4663                 if ( WHATSLEFT <= STRLENOF( " " LOGFILTERSTR "=\"" "\"" ) + si->si_logfilterstr.bv_len ) return;
4664                 ptr = lutil_strcopy( ptr, " " LOGFILTERSTR "=\"" );
4665                 ptr = lutil_strcopy( ptr, si->si_logfilterstr.bv_val );
4666                 *ptr++ = '"';
4667         }
4668         if ( !BER_BVISNULL( &si->si_logbase ) ) {
4669                 if ( WHATSLEFT <= STRLENOF( " " LOGBASESTR "=\"" "\"" ) + si->si_logbase.bv_len ) return;
4670                 ptr = lutil_strcopy( ptr, " " LOGBASESTR "=\"" );
4671                 ptr = lutil_strcopy( ptr, si->si_logbase.bv_val );
4672                 *ptr++ = '"';
4673         }
4674         if ( ldap_pvt_scope2bv( si->si_scope, &bs ) == LDAP_SUCCESS ) {
4675                 if ( WHATSLEFT <= STRLENOF( " " SCOPESTR "=" ) + bs.bv_len ) return;
4676                 ptr = lutil_strcopy( ptr, " " SCOPESTR "=" );
4677                 ptr = lutil_strcopy( ptr, bs.bv_val );
4678         }
4679         if ( si->si_attrsonly ) {
4680                 if ( WHATSLEFT <= STRLENOF( " " ATTRSONLYSTR "=\"" "\"" ) ) return;
4681                 ptr = lutil_strcopy( ptr, " " ATTRSONLYSTR );
4682         }
4683         if ( si->si_anfile ) {
4684                 if ( WHATSLEFT <= STRLENOF( " " ATTRSSTR "=\":include:" "\"" ) + strlen( si->si_anfile ) ) return;
4685                 ptr = lutil_strcopy( ptr, " " ATTRSSTR "=:include:\"" );
4686                 ptr = lutil_strcopy( ptr, si->si_anfile );
4687                 *ptr++ = '"';
4688         } else if ( si->si_allattrs || si->si_allopattrs ||
4689                 ( si->si_anlist && !BER_BVISNULL(&si->si_anlist[0].an_name) ) )
4690         {
4691                 char *old;
4692
4693                 if ( WHATSLEFT <= STRLENOF( " " ATTRSONLYSTR "=\"" "\"" ) ) return;
4694                 ptr = lutil_strcopy( ptr, " " ATTRSSTR "=\"" );
4695                 old = ptr;
4696                 ptr = anlist_unparse( si->si_anlist, ptr, WHATSLEFT );
4697                 if ( ptr == NULL ) return;
4698                 if ( si->si_allattrs ) {
4699                         if ( WHATSLEFT <= STRLENOF( ",*\"" ) ) return;
4700                         if ( old != ptr ) *ptr++ = ',';
4701                         *ptr++ = '*';
4702                 }
4703                 if ( si->si_allopattrs ) {
4704                         if ( WHATSLEFT <= STRLENOF( ",+\"" ) ) return;
4705                         if ( old != ptr ) *ptr++ = ',';
4706                         *ptr++ = '+';
4707                 }
4708                 *ptr++ = '"';
4709         }
4710         if ( si->si_exanlist && !BER_BVISNULL(&si->si_exanlist[0].an_name) ) {
4711                 if ( WHATSLEFT <= STRLENOF( " " EXATTRSSTR "=" ) ) return;
4712                 ptr = lutil_strcopy( ptr, " " EXATTRSSTR "=" );
4713                 ptr = anlist_unparse( si->si_exanlist, ptr, WHATSLEFT );
4714                 if ( ptr == NULL ) return;
4715         }
4716         if ( WHATSLEFT <= STRLENOF( " " SCHEMASTR "=" ) + STRLENOF( "off" ) ) return;
4717         ptr = lutil_strcopy( ptr, " " SCHEMASTR "=" );
4718         ptr = lutil_strcopy( ptr, si->si_schemachecking ? "on" : "off" );
4719
4720         if ( WHATSLEFT <= STRLENOF( " " TYPESTR "=" ) + STRLENOF( "refreshAndPersist" ) ) return;
4721         ptr = lutil_strcopy( ptr, " " TYPESTR "=" );
4722         ptr = lutil_strcopy( ptr, si->si_type == LDAP_SYNC_REFRESH_AND_PERSIST ?
4723                 "refreshAndPersist" : "refreshOnly" );
4724
4725         if ( si->si_type == LDAP_SYNC_REFRESH_ONLY ) {
4726                 int dd, hh, mm, ss;
4727
4728                 dd = si->si_interval;
4729                 ss = dd % 60;
4730                 dd /= 60;
4731                 mm = dd % 60;
4732                 dd /= 60;
4733                 hh = dd % 24;
4734                 dd /= 24;
4735                 len = snprintf( ptr, WHATSLEFT, " %s=%02d:%02d:%02d:%02d",
4736                         INTERVALSTR, dd, hh, mm, ss );
4737                 if ( len >= WHATSLEFT ) return;
4738                 ptr += len;
4739         }
4740
4741         if ( si->si_got & GOT_RETRY ) {
4742                 const char *space = "";
4743                 if ( WHATSLEFT <= STRLENOF( " " RETRYSTR "=\"" "\"" ) ) return;
4744                 ptr = lutil_strcopy( ptr, " " RETRYSTR "=\"" );
4745                 for (i=0; si->si_retryinterval[i]; i++) {
4746                         len = snprintf( ptr, WHATSLEFT, "%s%ld ", space,
4747                                 (long) si->si_retryinterval[i] );
4748                         space = " ";
4749                         if ( WHATSLEFT - 1 <= len ) return;
4750                         ptr += len;
4751                         if ( si->si_retrynum_init[i] == RETRYNUM_FOREVER )
4752                                 *ptr++ = '+';
4753                         else {
4754                                 len = snprintf( ptr, WHATSLEFT, "%d", si->si_retrynum_init[i] );
4755                                 if ( WHATSLEFT <= len ) return;
4756                                 ptr += len;
4757                         }
4758                 }
4759                 if ( WHATSLEFT <= STRLENOF( "\"" ) ) return;
4760                 *ptr++ = '"';
4761         } else {
4762                 ptr = lutil_strcopy( ptr, " " RETRYSTR "=undefined" );
4763         }
4764
4765         if ( si->si_slimit ) {
4766                 len = snprintf( ptr, WHATSLEFT, " " SLIMITSTR "=%d", si->si_slimit );
4767                 if ( WHATSLEFT <= len ) return;
4768                 ptr += len;
4769         }
4770
4771         if ( si->si_tlimit ) {
4772                 len = snprintf( ptr, WHATSLEFT, " " TLIMITSTR "=%d", si->si_tlimit );
4773                 if ( WHATSLEFT <= len ) return;
4774                 ptr += len;
4775         }
4776
4777         if ( si->si_syncdata ) {
4778                 if ( enum_to_verb( datamodes, si->si_syncdata, &bc ) >= 0 ) {
4779                         if ( WHATSLEFT <= STRLENOF( " " SYNCDATASTR "=" ) + bc.bv_len ) return;
4780                         ptr = lutil_strcopy( ptr, " " SYNCDATASTR "=" );
4781                         ptr = lutil_strcopy( ptr, bc.bv_val );
4782                 }
4783         }
4784         bc.bv_len = ptr - buf;
4785         bc.bv_val = buf;
4786         ber_dupbv( bv, &bc );
4787 }
4788
4789 int
4790 syncrepl_config( ConfigArgs *c )
4791 {
4792         if (c->op == SLAP_CONFIG_EMIT) {
4793                 if ( c->be->be_syncinfo ) {
4794                         struct berval bv;
4795                         syncinfo_t *si;
4796
4797                         for ( si = c->be->be_syncinfo; si; si=si->si_next ) {
4798                                 syncrepl_unparse( si, &bv );
4799                                 ber_bvarray_add( &c->rvalue_vals, &bv );
4800                         }
4801                         return 0;
4802                 }
4803                 return 1;
4804         } else if ( c->op == LDAP_MOD_DELETE ) {
4805                 int isrunning = 0;
4806                 if ( c->be->be_syncinfo ) {
4807                         syncinfo_t *si, **sip;
4808                         int i;
4809
4810                         for ( sip = &c->be->be_syncinfo, i=0; *sip; i++ ) {
4811                                 si = *sip;
4812                                 if ( c->valx == -1 || i == c->valx ) {
4813                                         *sip = si->si_next;
4814                                         si->si_ctype = -1;
4815                                         si->si_next = NULL;
4816                                         /* If the task is currently active, we have to leave
4817                                          * it running. It will exit on its own. This will only
4818                                          * happen when running on the cn=config DB.
4819                                          */
4820                                         if ( si->si_re ) {
4821                                                 if ( ldap_pvt_thread_mutex_trylock( &si->si_mutex )) {
4822                                                         isrunning = 1;
4823                                                 } else {
4824                                                         /* There is no active thread, but we must still
4825                                                          * ensure that no thread is (or will be) queued
4826                                                          * while we removes the task.
4827                                                          */
4828                                                         struct re_s *re = si->si_re;
4829                                                         si->si_re = NULL;
4830
4831                                                         if ( si->si_conn ) {
4832                                                                 connection_client_stop( si->si_conn );
4833                                                                 si->si_conn = NULL;
4834                                                         }
4835
4836                                                         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
4837                                                         if ( ldap_pvt_runqueue_isrunning( &slapd_rq, re ) ) {
4838                                                                 ldap_pvt_runqueue_stoptask( &slapd_rq, re );
4839                                                                 isrunning = 1;
4840                                                         }
4841                                                         ldap_pvt_runqueue_remove( &slapd_rq, re );
4842                                                         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
4843
4844                                                         if ( ldap_pvt_thread_pool_retract( &connection_pool,
4845                                                                         re->routine, re ) > 0 )
4846                                                                 isrunning = 0;
4847
4848                                                         ldap_pvt_thread_mutex_unlock( &si->si_mutex );
4849                                                 }
4850                                         }
4851                                         if ( !isrunning ) {
4852                                                 syncinfo_free( si, 0 );
4853                                         }
4854                                         if ( i == c->valx )
4855                                                 break;
4856                                 } else {
4857                                         sip = &si->si_next;
4858                                 }
4859                         }
4860                 }
4861                 if ( !c->be->be_syncinfo ) {
4862                         SLAP_DBFLAGS( c->be ) &= ~SLAP_DBFLAG_SHADOW_MASK;
4863                 }
4864                 return 0;
4865         }
4866         if ( SLAP_SLURP_SHADOW( c->be ) ) {
4867                 Debug(LDAP_DEBUG_ANY, "%s: "
4868                         "syncrepl: database already shadowed.\n",
4869                         c->log, 0, 0);
4870                 return(1);
4871         } else {
4872                 return add_syncrepl( c );
4873         }
4874 }