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 2003-2012 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 #ifdef ENABLE_REWRITE
  35 #include "rewrite.h"
  36 #define SUFFIXM_CTX     "<suffix massage>"
  37 #endif
  38
  39 struct nonpresent_entry {
  40         struct berval *npe_name;
  41         struct berval *npe_nname;
  42         LDAP_LIST_ENTRY(nonpresent_entry) npe_link;
  43 };
  44
  45 typedef struct cookie_state {
  46         ldap_pvt_thread_mutex_t cs_mutex;
  47         struct berval *cs_vals;
  48         int *cs_sids;
  49         int     cs_num;
  50         int cs_age;
  51         int cs_ref;
  52
  53         /* pending changes, not yet committed */
  54         ldap_pvt_thread_mutex_t cs_pmutex;
  55         struct berval *cs_pvals;
  56         int *cs_psids;
  57         int     cs_pnum;
  58 } cookie_state;
  59
  60 #define SYNCDATA_DEFAULT        0       /* entries are plain LDAP entries */
  61 #define SYNCDATA_ACCESSLOG      1       /* entries are accesslog format */
  62 #define SYNCDATA_CHANGELOG      2       /* entries are changelog format */
  63
  64 #define SYNCLOG_LOGGING         0       /* doing a log-based update */
  65 #define SYNCLOG_FALLBACK        1       /* doing a full refresh */
  66
  67 #define RETRYNUM_FOREVER        (-1)    /* retry forever */
  68 #define RETRYNUM_TAIL           (-2)    /* end of retrynum array */
  69 #define RETRYNUM_VALID(n)       ((n) >= RETRYNUM_FOREVER)       /* valid retrynum */
  70 #define RETRYNUM_FINITE(n)      ((n) > RETRYNUM_FOREVER)        /* not forever */
  71
  72 typedef struct syncinfo_s {
  73         struct syncinfo_s       *si_next;
  74         BackendDB               *si_be;
  75         BackendDB               *si_wbe;
  76         struct re_s             *si_re;
  77         int                     si_rid;
  78         char                    si_ridtxt[ STRLENOF("rid=999") + 1 ];
  79         slap_bindconf           si_bindconf;
  80         struct berval           si_base;
  81         struct berval           si_logbase;
  82         struct berval           si_filterstr;
  83         Filter                  *si_filter;
  84         struct berval           si_logfilterstr;
  85         struct berval           si_contextdn;
  86         int                     si_scope;
  87         int                     si_attrsonly;
  88         char                    *si_anfile;
  89         AttributeName           *si_anlist;
  90         AttributeName           *si_exanlist;
  91         char                    **si_attrs;
  92         char                    **si_exattrs;
  93         int                     si_allattrs;
  94         int                     si_allopattrs;
  95         int                     si_schemachecking;
  96         int                     si_type;        /* the active type */
  97         int                     si_ctype;       /* the configured type */
  98         time_t                  si_interval;
  99         time_t                  *si_retryinterval;
 100         int                     *si_retrynum_init;
 101         int                     *si_retrynum;
 102         struct sync_cookie      si_syncCookie;
 103         cookie_state            *si_cookieState;
 104         int                     si_cookieAge;
 105         int                     si_manageDSAit;
 106         int                     si_slimit;
 107         int                     si_tlimit;
 108         int                     si_refreshDelete;
 109         int                     si_refreshPresent;
 110         int                     si_refreshDone;
 111         int                     si_syncdata;
 112         int                     si_logstate;
 113         int                     si_got;
 114         int                     si_strict_refresh;      /* stop listening during fallback refresh */
 115         ber_int_t       si_msgid;
 116         Avlnode                 *si_presentlist;
 117         LDAP                    *si_ld;
 118         Connection              *si_conn;
 119         LDAP_LIST_HEAD(np, nonpresent_entry)    si_nonpresentlist;
 120 #ifdef ENABLE_REWRITE
 121         struct rewrite_info *si_rewrite;
 122         struct berval   si_suffixm;
 123 #endif
 124         ldap_pvt_thread_mutex_t si_mutex;
 125 } syncinfo_t;
 126
 127 static int syncuuid_cmp( const void *, const void * );
 128 static int avl_presentlist_insert( syncinfo_t* si, struct berval *syncUUID );
 129 static void syncrepl_del_nonpresent( Operation *, syncinfo_t *, BerVarray, struct sync_cookie *, int );
 130 static int syncrepl_message_to_op(
 131                                         syncinfo_t *, Operation *, LDAPMessage * );
 132 static int syncrepl_message_to_entry(
 133                                         syncinfo_t *, Operation *, LDAPMessage *,
 134                                         Modifications **, Entry **, int, struct berval* );
 135 static int syncrepl_entry(
 136                                         syncinfo_t *, Operation*, Entry*,
 137                                         Modifications**,int, struct berval*,
 138                                         struct berval *cookieCSN );
 139 static int syncrepl_updateCookie(
 140                                         syncinfo_t *, Operation *,
 141                                         struct sync_cookie * );
 142 static struct berval * slap_uuidstr_from_normalized(
 143                                         struct berval *, struct berval *, void * );
 144 static int syncrepl_add_glue_ancestors(
 145         Operation* op, Entry *e );
 146
 147 /* delta-mmr overlay handler */
 148 static int syncrepl_op_modify( Operation *op, SlapReply *rs );
 149
 150 /* callback functions */
 151 static int dn_callback( Operation *, SlapReply * );
 152 static int nonpresent_callback( Operation *, SlapReply * );
 153 static int null_callback( Operation *, SlapReply * );
 154
 155 static AttributeDescription *sync_descs[4];
 156
 157 /* delta-mmr */
 158 static AttributeDescription *ad_reqMod, *ad_reqDN;
 159
 160 typedef struct logschema {
 161         struct berval ls_dn;
 162         struct berval ls_req;
 163         struct berval ls_mod;
 164         struct berval ls_newRdn;
 165         struct berval ls_delRdn;
 166         struct berval ls_newSup;
 167 } logschema;
 168
 169 static logschema changelog_sc = {
 170         BER_BVC("targetDN"),
 171         BER_BVC("changeType"),
 172         BER_BVC("changes"),
 173         BER_BVC("newRDN"),
 174         BER_BVC("deleteOldRDN"),
 175         BER_BVC("newSuperior")
 176 };
 177
 178 static logschema accesslog_sc = {
 179         BER_BVC("reqDN"),
 180         BER_BVC("reqType"),
 181         BER_BVC("reqMod"),
 182         BER_BVC("reqNewRDN"),
 183         BER_BVC("reqDeleteOldRDN"),
 184         BER_BVC("reqNewSuperior")
 185 };
 186
 187 static const char *
 188 syncrepl_state2str( int state )
 189 {
 190         switch ( state ) {
 191         case LDAP_SYNC_PRESENT:
 192                 return "PRESENT";
 193
 194         case LDAP_SYNC_ADD:
 195                 return "ADD";
 196
 197         case LDAP_SYNC_MODIFY:
 198                 return "MODIFY";
 199
 200         case LDAP_SYNC_DELETE:
 201                 return "DELETE";
 202         }
 203
 204         return "UNKNOWN";
 205 }
 206
 207 static slap_overinst syncrepl_ov;
 208
 209 static void
 210 init_syncrepl(syncinfo_t *si)
 211 {
 212         int i, j, k, l, n;
 213         char **attrs, **exattrs;
 214
 215         if ( !syncrepl_ov.on_bi.bi_type ) {
 216                 syncrepl_ov.on_bi.bi_type = "syncrepl";
 217                 syncrepl_ov.on_bi.bi_op_modify = syncrepl_op_modify;
 218                 overlay_register( &syncrepl_ov );
 219         }
 220
 221         /* delta-MMR needs the overlay, nothing else does.
 222          * This must happen before accesslog overlay is configured.
 223          */
 224         if ( si->si_syncdata &&
 225                 !overlay_is_inst( si->si_be, syncrepl_ov.on_bi.bi_type )) {
 226                 overlay_config( si->si_be, syncrepl_ov.on_bi.bi_type, -1, NULL, NULL );
 227                 if ( !ad_reqMod ) {
 228                         const char *text;
 229                         logschema *ls = &accesslog_sc;
 230
 231                         slap_bv2ad( &ls->ls_mod, &ad_reqMod, &text );
 232                         slap_bv2ad( &ls->ls_dn, &ad_reqDN, &text );
 233                 }
 234         }
 235
 236         if ( !sync_descs[0] ) {
 237                 sync_descs[0] = slap_schema.si_ad_objectClass;
 238                 sync_descs[1] = slap_schema.si_ad_structuralObjectClass;
 239                 sync_descs[2] = slap_schema.si_ad_entryCSN;
 240                 sync_descs[3] = NULL;
 241         }
 242
 243         if ( si->si_allattrs && si->si_allopattrs )
 244                 attrs = NULL;
 245         else
 246                 attrs = anlist2attrs( si->si_anlist );
 247
 248         if ( attrs ) {
 249                 if ( si->si_allattrs ) {
 250                         i = 0;
 251                         while ( attrs[i] ) {
 252                                 if ( !is_at_operational( at_find( attrs[i] ) ) ) {
 253                                         for ( j = i; attrs[j] != NULL; j++ ) {
 254                                                 if ( j == i )
 255                                                         ch_free( attrs[i] );
 256                                                 attrs[j] = attrs[j+1];
 257                                         }
 258                                 } else {
 259                                         i++;
 260                                 }
 261                         }
 262                         attrs = ( char ** ) ch_realloc( attrs, (i + 2)*sizeof( char * ) );
 263                         attrs[i] = ch_strdup("*");
 264                         attrs[i + 1] = NULL;
 265
 266                 } else if ( si->si_allopattrs ) {
 267                         i = 0;
 268                         while ( attrs[i] ) {
 269                                 if ( is_at_operational( at_find( attrs[i] ) ) ) {
 270                                         for ( j = i; attrs[j] != NULL; j++ ) {
 271                                                 if ( j == i )
 272                                                         ch_free( attrs[i] );
 273                                                 attrs[j] = attrs[j+1];
 274                                         }
 275                                 } else {
 276                                         i++;
 277                                 }
 278                         }
 279                         attrs = ( char ** ) ch_realloc( attrs, (i + 2)*sizeof( char * ) );
 280                         attrs[i] = ch_strdup("+");
 281                         attrs[i + 1] = NULL;
 282                 }
 283
 284                 for ( i = 0; sync_descs[i] != NULL; i++ ) {
 285                         j = 0;
 286                         while ( attrs[j] ) {
 287                                 if ( !strcmp( attrs[j], sync_descs[i]->ad_cname.bv_val ) ) {
 288                                         for ( k = j; attrs[k] != NULL; k++ ) {
 289                                                 if ( k == j )
 290                                                         ch_free( attrs[k] );
 291                                                 attrs[k] = attrs[k+1];
 292                                         }
 293                                 } else {
 294                                         j++;
 295                                 }
 296                         }
 297                 }
 298
 299                 for ( n = 0; attrs[ n ] != NULL; n++ ) /* empty */;
 300
 301                 if ( si->si_allopattrs ) {
 302                         attrs = ( char ** ) ch_realloc( attrs, (n + 2)*sizeof( char * ) );
 303                 } else {
 304                         attrs = ( char ** ) ch_realloc( attrs, (n + 4)*sizeof( char * ) );
 305                 }
 306
 307                 /* Add Attributes */
 308                 if ( si->si_allopattrs ) {
 309                         attrs[n++] = ch_strdup( sync_descs[0]->ad_cname.bv_val );
 310                 } else {
 311                         for ( i = 0; sync_descs[ i ] != NULL; i++ ) {
 312                                 attrs[ n++ ] = ch_strdup ( sync_descs[i]->ad_cname.bv_val );
 313                         }
 314                 }
 315                 attrs[ n ] = NULL;
 316
 317         } else {
 318
 319                 i = 0;
 320                 if ( si->si_allattrs == si->si_allopattrs ) {
 321                         attrs = (char**) ch_malloc( 3 * sizeof(char*) );
 322                         attrs[i++] = ch_strdup( "*" );
 323                         attrs[i++] = ch_strdup( "+" );
 324                 } else if ( si->si_allattrs && !si->si_allopattrs ) {
 325                         for ( n = 0; sync_descs[ n ] != NULL; n++ ) ;
 326                         attrs = (char**) ch_malloc( (n+1)* sizeof(char*) );
 327                         attrs[i++] = ch_strdup( "*" );
 328                         for ( j = 1; sync_descs[ j ] != NULL; j++ ) {
 329                                 attrs[i++] = ch_strdup ( sync_descs[j]->ad_cname.bv_val );
 330                         }
 331                 } else if ( !si->si_allattrs && si->si_allopattrs ) {
 332                         attrs = (char**) ch_malloc( 3 * sizeof(char*) );
 333                         attrs[i++] = ch_strdup( "+" );
 334                         attrs[i++] = ch_strdup( sync_descs[0]->ad_cname.bv_val );
 335                 }
 336                 attrs[i] = NULL;
 337         }
 338
 339         si->si_attrs = attrs;
 340
 341         exattrs = anlist2attrs( si->si_exanlist );
 342
 343         if ( exattrs ) {
 344                 for ( n = 0; exattrs[n] != NULL; n++ ) ;
 345
 346                 for ( i = 0; sync_descs[i] != NULL; i++ ) {
 347                         j = 0;
 348                         while ( exattrs[j] != NULL ) {
 349                                 if ( !strcmp( exattrs[j], sync_descs[i]->ad_cname.bv_val ) ) {
 350                                         ch_free( exattrs[j] );
 351                                         for ( k = j; exattrs[k] != NULL; k++ ) {
 352                                                 exattrs[k] = exattrs[k+1];
 353                                         }
 354                                 } else {
 355                                         j++;
 356                                 }
 357                         }
 358                 }
 359
 360                 for ( i = 0; exattrs[i] != NULL; i++ ) {
 361                         for ( j = 0; si->si_anlist[j].an_name.bv_val; j++ ) {
 362                                 ObjectClass     *oc;
 363                                 if ( ( oc = si->si_anlist[j].an_oc ) ) {
 364                                         k = 0;
 365                                         while ( oc->soc_required[k] ) {
 366                                                 if ( !strcmp( exattrs[i],
 367                                                          oc->soc_required[k]->sat_cname.bv_val ) ) {
 368                                                         ch_free( exattrs[i] );
 369                                                         for ( l = i; exattrs[l]; l++ ) {
 370                                                                 exattrs[l] = exattrs[l+1];
 371                                                         }
 372                                                 } else {
 373                                                         k++;
 374                                                 }
 375                                         }
 376                                 }
 377                         }
 378                 }
 379
 380                 for ( i = 0; exattrs[i] != NULL; i++ ) ;
 381
 382                 if ( i != n )
 383                         exattrs = (char **) ch_realloc( exattrs, (i + 1)*sizeof(char *) );
 384         }
 385
 386         si->si_exattrs = exattrs;
 387 }
 388
 389 static int
 390 ldap_sync_search(
 391         syncinfo_t *si,
 392         void *ctx )
 393 {
 394         BerElementBuffer berbuf;
 395         BerElement *ber = (BerElement *)&berbuf;
 396         LDAPControl c[3], *ctrls[4];
 397         int rc;
 398         int rhint;
 399         char *base;
 400         char **attrs, *lattrs[8];
 401         char *filter;
 402         int attrsonly;
 403         int scope;
 404
 405         /* setup LDAP SYNC control */
 406         ber_init2( ber, NULL, LBER_USE_DER );
 407         ber_set_option( ber, LBER_OPT_BER_MEMCTX, &ctx );
 408
 409         /* If we're using a log but we have no state, then fallback to
 410          * normal mode for a full refresh.
 411          */
 412         if ( si->si_syncdata && !si->si_syncCookie.numcsns ) {
 413                 si->si_logstate = SYNCLOG_FALLBACK;
 414         }
 415
 416         /* Use the log parameters if we're in log mode */
 417         if ( si->si_syncdata && si->si_logstate == SYNCLOG_LOGGING ) {
 418                 logschema *ls;
 419                 if ( si->si_syncdata == SYNCDATA_ACCESSLOG )
 420                         ls = &accesslog_sc;
 421                 else
 422                         ls = &changelog_sc;
 423                 lattrs[0] = ls->ls_dn.bv_val;
 424                 lattrs[1] = ls->ls_req.bv_val;
 425                 lattrs[2] = ls->ls_mod.bv_val;
 426                 lattrs[3] = ls->ls_newRdn.bv_val;
 427                 lattrs[4] = ls->ls_delRdn.bv_val;
 428                 lattrs[5] = ls->ls_newSup.bv_val;
 429                 lattrs[6] = slap_schema.si_ad_entryCSN->ad_cname.bv_val;
 430                 lattrs[7] = NULL;
 431
 432                 rhint = 0;
 433                 base = si->si_logbase.bv_val;
 434                 filter = si->si_logfilterstr.bv_val;
 435                 attrs = lattrs;
 436                 attrsonly = 0;
 437                 scope = LDAP_SCOPE_SUBTREE;
 438         } else {
 439                 rhint = 1;
 440                 base = si->si_base.bv_val;
 441                 filter = si->si_filterstr.bv_val;
 442                 attrs = si->si_attrs;
 443                 attrsonly = si->si_attrsonly;
 444                 scope = si->si_scope;
 445         }
 446         if ( si->si_syncdata && si->si_logstate == SYNCLOG_FALLBACK ) {
 447                 si->si_type = LDAP_SYNC_REFRESH_ONLY;
 448         } else {
 449                 si->si_type = si->si_ctype;
 450         }
 451
 452         if ( !BER_BVISNULL( &si->si_syncCookie.octet_str ) )
 453         {
 454                 ber_printf( ber, "{eOb}",
 455                         abs(si->si_type), &si->si_syncCookie.octet_str, rhint );
 456         } else {
 457                 ber_printf( ber, "{eb}",
 458                         abs(si->si_type), rhint );
 459         }
 460
 461         if ( (rc = ber_flatten2( ber, &c[0].ldctl_value, 0 ) ) == -1 ) {
 462                 ber_free_buf( ber );
 463                 return rc;
 464         }
 465
 466         c[0].ldctl_oid = LDAP_CONTROL_SYNC;
 467         c[0].ldctl_iscritical = si->si_type < 0;
 468         ctrls[0] = &c[0];
 469
 470         c[1].ldctl_oid = LDAP_CONTROL_MANAGEDSAIT;
 471         BER_BVZERO( &c[1].ldctl_value );
 472         c[1].ldctl_iscritical = 1;
 473         ctrls[1] = &c[1];
 474
 475         if ( !BER_BVISNULL( &si->si_bindconf.sb_authzId ) ) {
 476                 c[2].ldctl_oid = LDAP_CONTROL_PROXY_AUTHZ;
 477                 c[2].ldctl_value = si->si_bindconf.sb_authzId;
 478                 c[2].ldctl_iscritical = 1;
 479                 ctrls[2] = &c[2];
 480                 ctrls[3] = NULL;
 481         } else {
 482                 ctrls[2] = NULL;
 483         }
 484
 485         rc = ldap_search_ext( si->si_ld, base, scope, filter, attrs, attrsonly,
 486                 ctrls, NULL, NULL, si->si_slimit, &si->si_msgid );
 487         ber_free_buf( ber );
 488         return rc;
 489 }
 490
 491 static int
 492 check_syncprov(
 493         Operation *op,
 494         syncinfo_t *si )
 495 {
 496         AttributeName at[2];
 497         Attribute a = {0};
 498         Entry e = {0};
 499         SlapReply rs = {REP_SEARCH};
 500         int i, j, changed = 0;
 501
 502         /* Look for contextCSN from syncprov overlay. If
 503          * there's no overlay, this will be a no-op. That means
 504          * this is a pure consumer, so local changes will not be
 505          * allowed, and all changes will already be reflected in
 506          * the cookieState.
 507          */
 508         a.a_desc = slap_schema.si_ad_contextCSN;
 509         e.e_attrs = &a;
 510         e.e_name = si->si_contextdn;
 511         e.e_nname = si->si_contextdn;
 512         at[0].an_name = a.a_desc->ad_cname;
 513         at[0].an_desc = a.a_desc;
 514         BER_BVZERO( &at[1].an_name );
 515         rs.sr_entry = &e;
 516         rs.sr_flags = REP_ENTRY_MODIFIABLE;
 517         rs.sr_attrs = at;
 518         op->o_req_dn = e.e_name;
 519         op->o_req_ndn = e.e_nname;
 520
 521         ldap_pvt_thread_mutex_lock( &si->si_cookieState->cs_mutex );
 522         i = backend_operational( op, &rs );
 523         if ( i == LDAP_SUCCESS && a.a_nvals ) {
 524                 int num = a.a_numvals;
 525                 /* check for differences */
 526                 if ( num != si->si_cookieState->cs_num ) {
 527                         changed = 1;
 528                 } else {
 529                         for ( i=0; i<num; i++ ) {
 530                                 if ( ber_bvcmp( &a.a_nvals[i],
 531                                         &si->si_cookieState->cs_vals[i] )) {
 532                                         changed = 1;
 533                                         break;
 534                                 }
 535                         }
 536                 }
 537                 if ( changed ) {
 538                         ber_bvarray_free( si->si_cookieState->cs_vals );
 539                         ch_free( si->si_cookieState->cs_sids );
 540                         si->si_cookieState->cs_num = num;
 541                         si->si_cookieState->cs_vals = a.a_nvals;
 542                         si->si_cookieState->cs_sids = slap_parse_csn_sids( a.a_nvals,
 543                                 num, NULL );
 544                         si->si_cookieState->cs_age++;
 545                 } else {
 546                         ber_bvarray_free( a.a_nvals );
 547                 }
 548                 ber_bvarray_free( a.a_vals );
 549         }
 550         /* See if the cookieState has changed due to anything outside
 551          * this particular consumer. That includes other consumers in
 552          * the same context, or local changes detected above.
 553          */
 554         if ( si->si_cookieState->cs_num > 0 && si->si_cookieAge !=
 555                 si->si_cookieState->cs_age ) {
 556                 if ( !si->si_syncCookie.numcsns ) {
 557                         ber_bvarray_free( si->si_syncCookie.ctxcsn );
 558                         ber_bvarray_dup_x( &si->si_syncCookie.ctxcsn,
 559                                 si->si_cookieState->cs_vals, NULL );
 560                         changed = 1;
 561                 } else {
 562                         for (i=0; !BER_BVISNULL( &si->si_syncCookie.ctxcsn[i] ); i++) {
 563                                 /* bogus, just dup everything */
 564                                 if ( si->si_syncCookie.sids[i] == -1 ) {
 565                                         ber_bvarray_free( si->si_syncCookie.ctxcsn );
 566                                         ber_bvarray_dup_x( &si->si_syncCookie.ctxcsn,
 567                                                 si->si_cookieState->cs_vals, NULL );
 568                                         changed = 1;
 569                                         break;
 570                                 }
 571                                 for (j=0; j<si->si_cookieState->cs_num; j++) {
 572                                         if ( si->si_syncCookie.sids[i] !=
 573                                                 si->si_cookieState->cs_sids[j] )
 574                                                 continue;
 575                                         if ( bvmatch( &si->si_syncCookie.ctxcsn[i],
 576                                                 &si->si_cookieState->cs_vals[j] ))
 577                                                 break;
 578                                         ber_bvreplace( &si->si_syncCookie.ctxcsn[i],
 579                                                 &si->si_cookieState->cs_vals[j] );
 580                                         changed = 1;
 581                                         break;
 582                                 }
 583                         }
 584                 }
 585         }
 586         if ( changed ) {
 587                 si->si_cookieAge = si->si_cookieState->cs_age;
 588                 ch_free( si->si_syncCookie.octet_str.bv_val );
 589                 slap_compose_sync_cookie( NULL, &si->si_syncCookie.octet_str,
 590                         si->si_syncCookie.ctxcsn, si->si_syncCookie.rid,
 591                         si->si_syncCookie.sid );
 592                 slap_parse_sync_cookie( &si->si_syncCookie, NULL );
 593         }
 594         ldap_pvt_thread_mutex_unlock( &si->si_cookieState->cs_mutex );
 595         return changed;
 596 }
 597
 598 static int
 599 do_syncrep1(
 600         Operation *op,
 601         syncinfo_t *si )
 602 {
 603         int     rc;
 604         int cmdline_cookie_found = 0;
 605
 606         struct sync_cookie      *sc = NULL;
 607 #ifdef HAVE_TLS
 608         void    *ssl;
 609 #endif
 610
 611         rc = slap_client_connect( &si->si_ld, &si->si_bindconf );
 612         if ( rc != LDAP_SUCCESS ) {
 613                 goto done;
 614         }
 615         op->o_protocol = LDAP_VERSION3;
 616
 617         /* Set SSF to strongest of TLS, SASL SSFs */
 618         op->o_sasl_ssf = 0;
 619         op->o_tls_ssf = 0;
 620         op->o_transport_ssf = 0;
 621 #ifdef HAVE_TLS
 622         if ( ldap_get_option( si->si_ld, LDAP_OPT_X_TLS_SSL_CTX, &ssl )
 623                 == LDAP_SUCCESS && ssl != NULL )
 624         {
 625                 op->o_tls_ssf = ldap_pvt_tls_get_strength( ssl );
 626         }
 627 #endif /* HAVE_TLS */
 628         {
 629                 ber_len_t ssf; /* ITS#5403, 3864 LDAP_OPT_X_SASL_SSF probably ought
 630                                                   to use sasl_ssf_t but currently uses ber_len_t */
 631                 if ( ldap_get_option( si->si_ld, LDAP_OPT_X_SASL_SSF, &ssf )
 632                         == LDAP_SUCCESS )
 633                         op->o_sasl_ssf = ssf;
 634         }
 635         op->o_ssf = ( op->o_sasl_ssf > op->o_tls_ssf )
 636                 ?  op->o_sasl_ssf : op->o_tls_ssf;
 637
 638         ldap_set_option( si->si_ld, LDAP_OPT_TIMELIMIT, &si->si_tlimit );
 639
 640         rc = LDAP_DEREF_NEVER;  /* actually could allow DEREF_FINDING */
 641         ldap_set_option( si->si_ld, LDAP_OPT_DEREF, &rc );
 642
 643         ldap_set_option( si->si_ld, LDAP_OPT_REFERRALS, LDAP_OPT_OFF );
 644
 645         si->si_syncCookie.rid = si->si_rid;
 646
 647         /* whenever there are multiple data sources possible, advertise sid */
 648         si->si_syncCookie.sid = ( SLAP_MULTIMASTER( si->si_be ) || si->si_be != si->si_wbe ) ?
 649                 slap_serverID : -1;
 650
 651         /* We've just started up, or the remote server hasn't sent us
 652          * any meaningful state.
 653          */
 654         if ( !si->si_syncCookie.ctxcsn ) {
 655                 int i;
 656
 657                 LDAP_STAILQ_FOREACH( sc, &slap_sync_cookie, sc_next ) {
 658                         if ( si->si_rid == sc->rid ) {
 659                                 cmdline_cookie_found = 1;
 660                                 break;
 661                         }
 662                 }
 663
 664                 if ( cmdline_cookie_found ) {
 665                         /* cookie is supplied in the command line */
 666
 667                         LDAP_STAILQ_REMOVE( &slap_sync_cookie, sc, sync_cookie, sc_next );
 668
 669                         /* ctxcsn wasn't parsed yet, do it now */
 670                         slap_parse_sync_cookie( sc, op->o_tmpmemctx );
 671                         slap_sync_cookie_free( &si->si_syncCookie, 0 );
 672                         slap_dup_sync_cookie( &si->si_syncCookie, sc );
 673                         slap_sync_cookie_free( sc, 1 );
 674                 } else {
 675                         ldap_pvt_thread_mutex_lock( &si->si_cookieState->cs_mutex );
 676                         if ( !si->si_cookieState->cs_num ) {
 677                                 /* get contextCSN shadow replica from database */
 678                                 BerVarray csn = NULL;
 679                                 void *ctx = op->o_tmpmemctx;
 680
 681                                 op->o_req_ndn = si->si_contextdn;
 682                                 op->o_req_dn = op->o_req_ndn;
 683
 684                                 /* try to read stored contextCSN */
 685                                 op->o_tmpmemctx = NULL;
 686                                 backend_attribute( op, NULL, &op->o_req_ndn,
 687                                         slap_schema.si_ad_contextCSN, &csn, ACL_READ );
 688                                 op->o_tmpmemctx = ctx;
 689                                 if ( csn ) {
 690                                         si->si_cookieState->cs_vals = csn;
 691                                         for (i=0; !BER_BVISNULL( &csn[i] ); i++);
 692                                         si->si_cookieState->cs_num = i;
 693                                         si->si_cookieState->cs_sids = slap_parse_csn_sids( csn, i, NULL );
 694                                         slap_sort_csn_sids( csn, si->si_cookieState->cs_sids, i, NULL );
 695                                 }
 696                         }
 697                         if ( si->si_cookieState->cs_num ) {
 698                                 ber_bvarray_free( si->si_syncCookie.ctxcsn );
 699                                 if ( ber_bvarray_dup_x( &si->si_syncCookie.ctxcsn,
 700                                         si->si_cookieState->cs_vals, NULL )) {
 701                                         rc = LDAP_NO_MEMORY;
 702                                         ldap_pvt_thread_mutex_unlock( &si->si_cookieState->cs_mutex );
 703                                         goto done;
 704                                 }
 705                                 si->si_syncCookie.numcsns = si->si_cookieState->cs_num;
 706                                 si->si_syncCookie.sids = ch_malloc( si->si_cookieState->cs_num *
 707                                         sizeof(int) );
 708                                 for ( i=0; i<si->si_syncCookie.numcsns; i++ )
 709                                         si->si_syncCookie.sids[i] = si->si_cookieState->cs_sids[i];
 710                         }
 711                         ldap_pvt_thread_mutex_unlock( &si->si_cookieState->cs_mutex );
 712                 }
 713
 714                 slap_compose_sync_cookie( NULL, &si->si_syncCookie.octet_str,
 715                         si->si_syncCookie.ctxcsn, si->si_syncCookie.rid,
 716                         si->si_syncCookie.sid );
 717         } else {
 718                 /* ITS#6367: recreate the cookie so it has our SID, not our peer's */
 719                 ch_free( si->si_syncCookie.octet_str.bv_val );
 720                 BER_BVZERO( &si->si_syncCookie.octet_str );
 721                 /* Look for contextCSN from syncprov overlay. */
 722                 check_syncprov( op, si );
 723                 if ( BER_BVISNULL( &si->si_syncCookie.octet_str ))
 724                         slap_compose_sync_cookie( NULL, &si->si_syncCookie.octet_str,
 725                                 si->si_syncCookie.ctxcsn, si->si_syncCookie.rid,
 726                                 si->si_syncCookie.sid );
 727         }
 728
 729         si->si_refreshDone = 0;
 730
 731         rc = ldap_sync_search( si, op->o_tmpmemctx );
 732
 733         if( rc != LDAP_SUCCESS ) {
 734                 Debug( LDAP_DEBUG_ANY, "do_syncrep1: %s "
 735                         "ldap_search_ext: %s (%d)\n",
 736                         si->si_ridtxt, ldap_err2string( rc ), rc );
 737         }
 738
 739 done:
 740         if ( rc ) {
 741                 if ( si->si_ld ) {
 742                         ldap_unbind_ext( si->si_ld, NULL, NULL );
 743                         si->si_ld = NULL;
 744                 }
 745         }
 746
 747         return rc;
 748 }
 749
 750 static int
 751 compare_csns( struct sync_cookie *sc1, struct sync_cookie *sc2, int *which )
 752 {
 753         int i, j, match = 0;
 754         const char *text;
 755
 756         *which = 0;
 757
 758         if ( sc1->numcsns < sc2->numcsns ) {
 759                 *which = sc1->numcsns;
 760                 return -1;
 761         }
 762
 763         for (j=0; j<sc2->numcsns; j++) {
 764                 for (i=0; i<sc1->numcsns; i++) {
 765                         if ( sc1->sids[i] != sc2->sids[j] )
 766                                 continue;
 767                         value_match( &match, slap_schema.si_ad_entryCSN,
 768                                 slap_schema.si_ad_entryCSN->ad_type->sat_ordering,
 769                                 SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
 770                                 &sc1->ctxcsn[i], &sc2->ctxcsn[j], &text );
 771                         if ( match < 0 ) {
 772                                 *which = j;
 773                                 return match;
 774                         }
 775                         break;
 776                 }
 777                 if ( i == sc1->numcsns ) {
 778                         /* sc2 has a sid sc1 lacks */
 779                         *which = j;
 780                         return -1;
 781                 }
 782         }
 783         return match;
 784 }
 785
 786 #define SYNC_PAUSED     -3
 787
 788 static int
 789 do_syncrep2(
 790         Operation *op,
 791         syncinfo_t *si )
 792 {
 793         BerElementBuffer berbuf;
 794         BerElement      *ber = (BerElement *)&berbuf;
 795
 796         LDAPMessage     *msg = NULL;
 797
 798         struct sync_cookie      syncCookie = { NULL };
 799         struct sync_cookie      syncCookie_req = { NULL };
 800
 801         int             rc,
 802                         err = LDAP_SUCCESS;
 803
 804         Modifications   *modlist = NULL;
 805
 806         int                             m;
 807
 808         struct timeval *tout_p = NULL;
 809         struct timeval tout = { 0, 0 };
 810
 811         int             refreshDeletes = 0;
 812         char empty[6] = "empty";
 813
 814         if ( slapd_shutdown ) {
 815                 rc = -2;
 816                 goto done;
 817         }
 818
 819         ber_init2( ber, NULL, LBER_USE_DER );
 820         ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
 821
 822         Debug( LDAP_DEBUG_TRACE, "=>do_syncrep2 %s\n", si->si_ridtxt, 0, 0 );
 823
 824         slap_dup_sync_cookie( &syncCookie_req, &si->si_syncCookie );
 825
 826         if ( abs(si->si_type) == LDAP_SYNC_REFRESH_AND_PERSIST && si->si_refreshDone ) {
 827                 tout_p = &tout;
 828         } else {
 829                 tout_p = NULL;
 830         }
 831
 832         while ( ( rc = ldap_result( si->si_ld, si->si_msgid, LDAP_MSG_ONE,
 833                 tout_p, &msg ) ) > 0 )
 834         {
 835                 int                             match, punlock, syncstate;
 836                 struct berval   *retdata, syncUUID[2], cookie = BER_BVNULL;
 837                 char                    *retoid;
 838                 LDAPControl             **rctrls = NULL, *rctrlp = NULL;
 839                 BerVarray               syncUUIDs;
 840                 ber_len_t               len;
 841                 ber_tag_t               si_tag;
 842                 Entry                   *entry;
 843                 struct berval   bdn;
 844
 845                 if ( slapd_shutdown ) {
 846                         rc = -2;
 847                         goto done;
 848                 }
 849                 switch( ldap_msgtype( msg ) ) {
 850                 case LDAP_RES_SEARCH_ENTRY:
 851                         ldap_get_entry_controls( si->si_ld, msg, &rctrls );
 852                         ldap_get_dn_ber( si->si_ld, msg, NULL, &bdn );
 853                         if (!bdn.bv_len) {
 854                                 bdn.bv_val = empty;
 855                                 bdn.bv_len = sizeof(empty)-1;
 856                         }
 857                         /* we can't work without the control */
 858                         if ( rctrls ) {
 859                                 LDAPControl **next = NULL;
 860                                 /* NOTE: make sure we use the right one;
 861                                  * a better approach would be to run thru
 862                                  * the whole list and take care of all */
 863                                 /* NOTE: since we issue the search request,
 864                                  * we should know what controls to expect,
 865                                  * and there should be none apart from the
 866                                  * sync-related control */
 867                                 rctrlp = ldap_control_find( LDAP_CONTROL_SYNC_STATE, rctrls, &next );
 868                                 if ( next && ldap_control_find( LDAP_CONTROL_SYNC_STATE, next, NULL ) )
 869                                 {
 870                                         bdn.bv_val[bdn.bv_len] = '\0';
 871                                         Debug( LDAP_DEBUG_ANY, "do_syncrep2: %s "
 872                                                 "got search entry with multiple "
 873                                                 "Sync State control (%s)\n", si->si_ridtxt, bdn.bv_val, 0 );
 874                                         ldap_controls_free( rctrls );
 875                                         rc = -1;
 876                                         goto done;
 877                                 }
 878                         }
 879                         if ( rctrlp == NULL ) {
 880                                 bdn.bv_val[bdn.bv_len] = '\0';
 881                                 Debug( LDAP_DEBUG_ANY, "do_syncrep2: %s "
 882                                         "got search entry without "
 883                                         "Sync State control (%s)\n", si->si_ridtxt, bdn.bv_val, 0 );
 884                                 rc = -1;
 885                                 goto done;
 886                         }
 887                         ber_init2( ber, &rctrlp->ldctl_value, LBER_USE_DER );
 888                         if ( ber_scanf( ber, "{em" /*"}"*/, &syncstate, &syncUUID[0] )
 889                                         == LBER_ERROR ) {
 890                                 bdn.bv_val[bdn.bv_len] = '\0';
 891                                 Debug( LDAP_DEBUG_ANY, "do_syncrep2: %s malformed message (%s)\n",
 892                                         si->si_ridtxt, bdn.bv_val, 0 );
 893                                 ldap_controls_free( rctrls );
 894                                 rc = -1;
 895                                 goto done;
 896                         }
 897                         /* FIXME: what if syncUUID is NULL or empty?
 898                          * (happens with back-sql...) */
 899                         if ( BER_BVISEMPTY( &syncUUID[0] ) ) {
 900                                 bdn.bv_val[bdn.bv_len] = '\0';
 901                                 Debug( LDAP_DEBUG_ANY, "do_syncrep2: %s "
 902                                         "got empty syncUUID with LDAP_SYNC_%s (%s)\n",
 903                                         si->si_ridtxt,
 904                                         syncrepl_state2str( syncstate ), bdn.bv_val );
 905                                 ldap_controls_free( rctrls );
 906                                 rc = -1;
 907                                 goto done;
 908                         }
 909                         punlock = -1;
 910                         if ( ber_peek_tag( ber, &len ) == LDAP_TAG_SYNC_COOKIE ) {
 911                                 ber_scanf( ber, /*"{"*/ "m}", &cookie );
 912
 913                                 Debug( LDAP_DEBUG_SYNC, "do_syncrep2: %s cookie=%s\n",
 914                                         si->si_ridtxt,
 915                                         BER_BVISNULL( &cookie ) ? "" : cookie.bv_val, 0 );
 916
 917                                 if ( !BER_BVISNULL( &cookie ) ) {
 918                                         ch_free( syncCookie.octet_str.bv_val );
 919                                         ber_dupbv( &syncCookie.octet_str, &cookie );
 920                                 }
 921                                 if ( !BER_BVISNULL( &syncCookie.octet_str ) )
 922                                 {
 923                                         slap_parse_sync_cookie( &syncCookie, NULL );
 924                                         if ( syncCookie.ctxcsn ) {
 925                                                 int i, sid = slap_parse_csn_sid( syncCookie.ctxcsn );
 926                                                 check_syncprov( op, si );
 927                                                 for ( i =0; i<si->si_cookieState->cs_num; i++ ) {
 928                                                         /* new SID */
 929                                                         if ( sid < si->si_cookieState->cs_sids[i] )
 930                                                                 break;
 931                                                         if ( si->si_cookieState->cs_sids[i] == sid ) {
 932                                                                 if ( ber_bvcmp( syncCookie.ctxcsn, &si->si_cookieState->cs_vals[i] ) <= 0 ) {
 933                                                                         bdn.bv_val[bdn.bv_len] = '\0';
 934                                                                         Debug( LDAP_DEBUG_SYNC, "do_syncrep2: %s CSN too old, ignoring %s (%s)\n",
 935                                                                                 si->si_ridtxt, syncCookie.ctxcsn->bv_val, bdn.bv_val );
 936                                                                         ldap_controls_free( rctrls );
 937                                                                         rc = 0;
 938                                                                         goto done;
 939                                                                 }
 940                                                                 break;
 941                                                         }
 942                                                 }
 943                                                 /* check pending CSNs too */
 944                                                 while ( ldap_pvt_thread_mutex_trylock( &si->si_cookieState->cs_pmutex )) {
 945                                                         if ( slapd_shutdown ) {
 946                                                                 rc = -2;
 947                                                                 goto done;
 948                                                         }
 949                                                         if ( !ldap_pvt_thread_pool_pausecheck( &connection_pool ))
 950                                                                 ldap_pvt_thread_yield();
 951                                                 }
 952                                                 for ( i =0; i<si->si_cookieState->cs_pnum; i++ ) {
 953                                                         if ( sid < si->si_cookieState->cs_psids[i] )
 954                                                                 break;
 955                                                         if ( si->si_cookieState->cs_psids[i] == sid ) {
 956                                                                 if ( ber_bvcmp( syncCookie.ctxcsn, &si->si_cookieState->cs_pvals[i] ) <= 0 ) {
 957                                                                         bdn.bv_val[bdn.bv_len] = '\0';
 958                                                                         Debug( LDAP_DEBUG_SYNC, "do_syncrep2: %s CSN pending, ignoring %s (%s)\n",
 959                                                                                 si->si_ridtxt, syncCookie.ctxcsn->bv_val, bdn.bv_val );
 960                                                                         ldap_controls_free( rctrls );
 961                                                                         rc = 0;
 962                                                                         ldap_pvt_thread_mutex_unlock( &si->si_cookieState->cs_pmutex );
 963                                                                         goto done;
 964                                                                 }
 965                                                                 ber_bvreplace( &si->si_cookieState->cs_pvals[i],
 966                                                                         syncCookie.ctxcsn );
 967                                                                 break;
 968                                                         }
 969                                                 }
 970                                                 /* new SID, add it */
 971                                                 if ( i == si->si_cookieState->cs_pnum ||
 972                                                         sid != si->si_cookieState->cs_psids[i] ) {
 973                                                         slap_insert_csn_sids(
 974                                                                 (struct sync_cookie *)&si->si_cookieState->cs_pvals,
 975                                                                 i, sid, syncCookie.ctxcsn );
 976                                                 }
 977                                                 assert( punlock < 0 );
 978                                                 punlock = i;
 979                                         }
 980                                         op->o_controls[slap_cids.sc_LDAPsync] = &syncCookie;
 981                                 }
 982                         }
 983                         rc = 0;
 984                         if ( si->si_syncdata && si->si_logstate == SYNCLOG_LOGGING ) {
 985                                 modlist = NULL;
 986                                 if ( ( rc = syncrepl_message_to_op( si, op, msg ) ) == LDAP_SUCCESS &&
 987                                         syncCookie.ctxcsn )
 988                                 {
 989                                         rc = syncrepl_updateCookie( si, op, &syncCookie );
 990                                 } else switch ( rc ) {
 991                                         case LDAP_ALREADY_EXISTS:
 992                                         case LDAP_NO_SUCH_OBJECT:
 993                                         case LDAP_NO_SUCH_ATTRIBUTE:
 994                                         case LDAP_TYPE_OR_VALUE_EXISTS:
 995                                                 rc = LDAP_SYNC_REFRESH_REQUIRED;
 996                                                 si->si_logstate = SYNCLOG_FALLBACK;
 997                                                 ldap_abandon_ext( si->si_ld, si->si_msgid, NULL, NULL );
 998                                                 bdn.bv_val[bdn.bv_len] = '\0';
 999                                                 Debug( LDAP_DEBUG_SYNC, "do_syncrep2: %s delta-sync lost sync on (%s), switching to REFRESH\n",
1000                                                         si->si_ridtxt, bdn.bv_val, 0 );
1001                                                 if (si->si_strict_refresh) {
1002                                                         slap_suspend_listeners();
1003                                                         connections_drop();
1004                                                 }
1005                                                 break;
1006                                         default:
1007                                                 break;
1008                                 }
1009                         } else if ( ( rc = syncrepl_message_to_entry( si, op, msg,
1010                                 &modlist, &entry, syncstate, syncUUID ) ) == LDAP_SUCCESS )
1011                         {
1012                                 if ( ( rc = syncrepl_entry( si, op, entry, &modlist,
1013                                         syncstate, syncUUID, syncCookie.ctxcsn ) ) == LDAP_SUCCESS &&
1014                                         syncCookie.ctxcsn )
1015                                 {
1016                                         rc = syncrepl_updateCookie( si, op, &syncCookie );
1017                                 }
1018                         }
1019                         if ( punlock >= 0 ) {
1020                                 /* on failure, revert pending CSN */
1021                                 if ( rc != LDAP_SUCCESS ) {
1022                                         int i;
1023                                         for ( i = 0; i<si->si_cookieState->cs_num; i++ ) {
1024                                                 if ( si->si_cookieState->cs_sids[i] == si->si_cookieState->cs_psids[punlock] ) {
1025                                                         ber_bvreplace( &si->si_cookieState->cs_pvals[punlock],
1026                                                                 &si->si_cookieState->cs_vals[i] );
1027                                                         break;
1028                                                 }
1029                                         }
1030                                         if ( i == si->si_cookieState->cs_num )
1031                                                 si->si_cookieState->cs_pvals[punlock].bv_val[0] = '\0';
1032                                 }
1033                                 ldap_pvt_thread_mutex_unlock( &si->si_cookieState->cs_pmutex );
1034                         }
1035                         ldap_controls_free( rctrls );
1036                         if ( modlist ) {
1037                                 slap_mods_free( modlist, 1 );
1038                         }
1039                         if ( rc )
1040                                 goto done;
1041                         break;
1042
1043                 case LDAP_RES_SEARCH_REFERENCE:
1044                         Debug( LDAP_DEBUG_ANY,
1045                                 "do_syncrep2: %s reference received error\n",
1046                                 si->si_ridtxt, 0, 0 );
1047                         break;
1048
1049                 case LDAP_RES_SEARCH_RESULT:
1050                         Debug( LDAP_DEBUG_SYNC,
1051                                 "do_syncrep2: %s LDAP_RES_SEARCH_RESULT\n",
1052                                 si->si_ridtxt, 0, 0 );
1053                         err = LDAP_OTHER; /* FIXME check parse result properly */
1054                         ldap_parse_result( si->si_ld, msg, &err, NULL, NULL, NULL,
1055                                 &rctrls, 0 );
1056 #ifdef LDAP_X_SYNC_REFRESH_REQUIRED
1057                         if ( err == LDAP_X_SYNC_REFRESH_REQUIRED ) {
1058                                 /* map old result code to registered code */
1059                                 err = LDAP_SYNC_REFRESH_REQUIRED;
1060                         }
1061 #endif
1062                         if ( err == LDAP_SYNC_REFRESH_REQUIRED ) {
1063                                 if ( si->si_logstate == SYNCLOG_LOGGING ) {
1064                                         si->si_logstate = SYNCLOG_FALLBACK;
1065                                         Debug( LDAP_DEBUG_SYNC, "do_syncrep2: %s delta-sync lost sync, switching to REFRESH\n",
1066                                                 si->si_ridtxt, 0, 0 );
1067                                         if (si->si_strict_refresh) {
1068                                                 slap_suspend_listeners();
1069                                                 connections_drop();
1070                                         }
1071                                 }
1072                                 rc = err;
1073                                 goto done;
1074                         }
1075                         if ( err ) {
1076                                 Debug( LDAP_DEBUG_ANY,
1077                                         "do_syncrep2: %s LDAP_RES_SEARCH_RESULT (%d) %s\n",
1078                                         si->si_ridtxt, err, ldap_err2string( err ) );
1079                         }
1080                         if ( rctrls ) {
1081                                 LDAPControl **next = NULL;
1082                                 /* NOTE: make sure we use the right one;
1083                                  * a better approach would be to run thru
1084                                  * the whole list and take care of all */
1085                                 /* NOTE: since we issue the search request,
1086                                  * we should know what controls to expect,
1087                                  * and there should be none apart from the
1088                                  * sync-related control */
1089                                 rctrlp = ldap_control_find( LDAP_CONTROL_SYNC_DONE, rctrls, &next );
1090                                 if ( next && ldap_control_find( LDAP_CONTROL_SYNC_DONE, next, NULL ) )
1091                                 {
1092                                         Debug( LDAP_DEBUG_ANY, "do_syncrep2: %s "
1093                                                 "got search result with multiple "
1094                                                 "Sync State control\n", si->si_ridtxt, 0, 0 );
1095                                         ldap_controls_free( rctrls );
1096                                         rc = -1;
1097                                         goto done;
1098                                 }
1099                         }
1100                         if ( rctrlp ) {
1101                                 ber_init2( ber, &rctrlp->ldctl_value, LBER_USE_DER );
1102
1103                                 ber_scanf( ber, "{" /*"}"*/);
1104                                 if ( ber_peek_tag( ber, &len ) == LDAP_TAG_SYNC_COOKIE ) {
1105                                         ber_scanf( ber, "m", &cookie );
1106
1107                                         Debug( LDAP_DEBUG_SYNC, "do_syncrep2: %s cookie=%s\n",
1108                                                 si->si_ridtxt,
1109                                                 BER_BVISNULL( &cookie ) ? "" : cookie.bv_val, 0 );
1110
1111                                         if ( !BER_BVISNULL( &cookie ) ) {
1112                                                 ch_free( syncCookie.octet_str.bv_val );
1113                                                 ber_dupbv( &syncCookie.octet_str, &cookie);
1114                                         }
1115                                         if ( !BER_BVISNULL( &syncCookie.octet_str ) )
1116                                         {
1117                                                 slap_parse_sync_cookie( &syncCookie, NULL );
1118                                                 op->o_controls[slap_cids.sc_LDAPsync] = &syncCookie;
1119                                         }
1120                                 }
1121                                 if ( ber_peek_tag( ber, &len ) == LDAP_TAG_REFRESHDELETES )
1122                                 {
1123                                         ber_scanf( ber, "b", &refreshDeletes );
1124                                 }
1125                                 ber_scanf( ber, /*"{"*/ "}" );
1126                         }
1127                         if ( SLAP_MULTIMASTER( op->o_bd ) && check_syncprov( op, si )) {
1128                                 slap_sync_cookie_free( &syncCookie_req, 0 );
1129                                 slap_dup_sync_cookie( &syncCookie_req, &si->si_syncCookie );
1130                         }
1131                         if ( !syncCookie.ctxcsn ) {
1132                                 match = 1;
1133                         } else if ( !syncCookie_req.ctxcsn ) {
1134                                 match = -1;
1135                                 m = 0;
1136                         } else {
1137                                 match = compare_csns( &syncCookie_req, &syncCookie, &m );
1138                         }
1139                         if ( rctrls ) {
1140                                 ldap_controls_free( rctrls );
1141                         }
1142                         if (si->si_type != LDAP_SYNC_REFRESH_AND_PERSIST) {
1143                                 /* FIXME : different error behaviors according to
1144                                  *      1) err code : LDAP_BUSY ...
1145                                  *      2) on err policy : stop service, stop sync, retry
1146                                  */
1147                                 if ( refreshDeletes == 0 && match < 0 &&
1148                                         err == LDAP_SUCCESS &&
1149                                         syncCookie_req.numcsns == syncCookie.numcsns )
1150                                 {
1151                                         syncrepl_del_nonpresent( op, si, NULL,
1152                                                 &syncCookie, m );
1153                                 } else {
1154                                         avl_free( si->si_presentlist, ch_free );
1155                                         si->si_presentlist = NULL;
1156                                 }
1157                         }
1158                         if ( syncCookie.ctxcsn && match < 0 && err == LDAP_SUCCESS )
1159                         {
1160                                 rc = syncrepl_updateCookie( si, op, &syncCookie );
1161                         }
1162                         if ( err == LDAP_SUCCESS
1163                                 && si->si_logstate == SYNCLOG_FALLBACK ) {
1164                                 si->si_logstate = SYNCLOG_LOGGING;
1165                                 rc = LDAP_SYNC_REFRESH_REQUIRED;
1166                                 slap_resume_listeners();
1167                         } else {
1168                                 rc = -2;
1169                         }
1170                         goto done;
1171
1172                 case LDAP_RES_INTERMEDIATE:
1173                         retoid = NULL;
1174                         retdata = NULL;
1175                         rc = ldap_parse_intermediate( si->si_ld, msg,
1176                                 &retoid, &retdata, NULL, 0 );
1177                         if ( !rc && !strcmp( retoid, LDAP_SYNC_INFO ) ) {
1178                                 ber_init2( ber, retdata, LBER_USE_DER );
1179
1180                                 switch ( si_tag = ber_peek_tag( ber, &len ) ) {
1181                                 ber_tag_t tag;
1182                                 case LDAP_TAG_SYNC_NEW_COOKIE:
1183                                         Debug( LDAP_DEBUG_SYNC,
1184                                                 "do_syncrep2: %s %s - %s\n",
1185                                                 si->si_ridtxt,
1186                                                 "LDAP_RES_INTERMEDIATE",
1187                                                 "NEW_COOKIE" );
1188                                         ber_scanf( ber, "tm", &tag, &cookie );
1189                                         Debug( LDAP_DEBUG_SYNC,
1190                                                 "do_syncrep2: %s NEW_COOKIE: %s\n",
1191                                                 si->si_ridtxt,
1192                                                 cookie.bv_val, 0);
1193                                         if ( !BER_BVISNULL( &cookie ) ) {
1194                                                 ch_free( syncCookie.octet_str.bv_val );
1195                                                 ber_dupbv( &syncCookie.octet_str, &cookie );
1196                                         }
1197                                         if (!BER_BVISNULL( &syncCookie.octet_str ) ) {
1198                                                 slap_parse_sync_cookie( &syncCookie, NULL );
1199                                                 op->o_controls[slap_cids.sc_LDAPsync] = &syncCookie;
1200                                         }
1201                                         break;
1202                                 case LDAP_TAG_SYNC_REFRESH_DELETE:
1203                                 case LDAP_TAG_SYNC_REFRESH_PRESENT:
1204                                         Debug( LDAP_DEBUG_SYNC,
1205                                                 "do_syncrep2: %s %s - %s\n",
1206                                                 si->si_ridtxt,
1207                                                 "LDAP_RES_INTERMEDIATE",
1208                                                 si_tag == LDAP_TAG_SYNC_REFRESH_PRESENT ?
1209                                                 "REFRESH_PRESENT" : "REFRESH_DELETE" );
1210                                         if ( si_tag == LDAP_TAG_SYNC_REFRESH_DELETE ) {
1211                                                 si->si_refreshDelete = 1;
1212                                         } else {
1213                                                 si->si_refreshPresent = 1;
1214                                         }
1215                                         ber_scanf( ber, "t{" /*"}"*/, &tag );
1216                                         if ( ber_peek_tag( ber, &len ) == LDAP_TAG_SYNC_COOKIE )
1217                                         {
1218                                                 ber_scanf( ber, "m", &cookie );
1219
1220                                                 Debug( LDAP_DEBUG_SYNC, "do_syncrep2: %s cookie=%s\n",
1221                                                         si->si_ridtxt,
1222                                                         BER_BVISNULL( &cookie ) ? "" : cookie.bv_val, 0 );
1223
1224                                                 if ( !BER_BVISNULL( &cookie ) ) {
1225                                                         ch_free( syncCookie.octet_str.bv_val );
1226                                                         ber_dupbv( &syncCookie.octet_str, &cookie );
1227                                                 }
1228                                                 if ( !BER_BVISNULL( &syncCookie.octet_str ) )
1229                                                 {
1230                                                         slap_parse_sync_cookie( &syncCookie, NULL );
1231                                                         op->o_controls[slap_cids.sc_LDAPsync] = &syncCookie;
1232                                                 }
1233                                         }
1234                                         /* Defaults to TRUE */
1235                                         if ( ber_peek_tag( ber, &len ) ==
1236                                                 LDAP_TAG_REFRESHDONE )
1237                                         {
1238                                                 ber_scanf( ber, "b", &si->si_refreshDone );
1239                                         } else
1240                                         {
1241                                                 si->si_refreshDone = 1;
1242                                         }
1243                                         ber_scanf( ber, /*"{"*/ "}" );
1244                                         if ( abs(si->si_type) == LDAP_SYNC_REFRESH_AND_PERSIST &&
1245                                                 si->si_refreshDone )
1246                                                 tout_p = &tout;
1247                                         break;
1248                                 case LDAP_TAG_SYNC_ID_SET:
1249                                         Debug( LDAP_DEBUG_SYNC,
1250                                                 "do_syncrep2: %s %s - %s\n",
1251                                                 si->si_ridtxt,
1252                                                 "LDAP_RES_INTERMEDIATE",
1253                                                 "SYNC_ID_SET" );
1254                                         ber_scanf( ber, "t{" /*"}"*/, &tag );
1255                                         if ( ber_peek_tag( ber, &len ) ==
1256                                                 LDAP_TAG_SYNC_COOKIE )
1257                                         {
1258                                                 ber_scanf( ber, "m", &cookie );
1259
1260                                                 Debug( LDAP_DEBUG_SYNC, "do_syncrep2: %s cookie=%s\n",
1261                                                         si->si_ridtxt,
1262                                                         BER_BVISNULL( &cookie ) ? "" : cookie.bv_val, 0 );
1263
1264                                                 if ( !BER_BVISNULL( &cookie ) ) {
1265                                                         ch_free( syncCookie.octet_str.bv_val );
1266                                                         ber_dupbv( &syncCookie.octet_str, &cookie );
1267                                                 }
1268                                                 if ( !BER_BVISNULL( &syncCookie.octet_str ) )
1269                                                 {
1270                                                         slap_parse_sync_cookie( &syncCookie, NULL );
1271                                                         op->o_controls[slap_cids.sc_LDAPsync] = &syncCookie;
1272                                                         compare_csns( &syncCookie_req, &syncCookie, &m );
1273                                                 }
1274                                         }
1275                                         if ( ber_peek_tag( ber, &len ) ==
1276                                                 LDAP_TAG_REFRESHDELETES )
1277                                         {
1278                                                 ber_scanf( ber, "b", &refreshDeletes );
1279                                         }
1280                                         syncUUIDs = NULL;
1281                                         ber_scanf( ber, "[W]", &syncUUIDs );
1282                                         ber_scanf( ber, /*"{"*/ "}" );
1283                                         if ( refreshDeletes ) {
1284                                                 syncrepl_del_nonpresent( op, si, syncUUIDs,
1285                                                         &syncCookie, m );
1286                                                 ber_bvarray_free_x( syncUUIDs, op->o_tmpmemctx );
1287                                         } else {
1288                                                 int i;
1289                                                 for ( i = 0; !BER_BVISNULL( &syncUUIDs[i] ); i++ ) {
1290                                                         (void)avl_presentlist_insert( si, &syncUUIDs[i] );
1291                                                         slap_sl_free( syncUUIDs[i].bv_val, op->o_tmpmemctx );
1292                                                 }
1293                                                 slap_sl_free( syncUUIDs, op->o_tmpmemctx );
1294                                         }
1295                                         slap_sync_cookie_free( &syncCookie, 0 );
1296                                         break;
1297                                 default:
1298                                         Debug( LDAP_DEBUG_ANY,
1299                                                 "do_syncrep2: %s unknown syncinfo tag (%ld)\n",
1300                                                 si->si_ridtxt, (long) si_tag, 0 );
1301                                         ldap_memfree( retoid );
1302                                         ber_bvfree( retdata );
1303                                         continue;
1304                                 }
1305
1306                                 if ( SLAP_MULTIMASTER( op->o_bd ) && check_syncprov( op, si )) {
1307                                         slap_sync_cookie_free( &syncCookie_req, 0 );
1308                                         slap_dup_sync_cookie( &syncCookie_req, &si->si_syncCookie );
1309                                 }
1310                                 if ( !syncCookie.ctxcsn ) {
1311                                         match = 1;
1312                                 } else if ( !syncCookie_req.ctxcsn ) {
1313                                         match = -1;
1314                                         m = 0;
1315                                 } else {
1316                                         match = compare_csns( &syncCookie_req, &syncCookie, &m );
1317                                 }
1318
1319                                 if ( match < 0 ) {
1320                                         if ( si->si_refreshPresent == 1 &&
1321                                                 si_tag != LDAP_TAG_SYNC_NEW_COOKIE &&
1322                                                 syncCookie_req.numcsns == syncCookie.numcsns ) {
1323                                                 syncrepl_del_nonpresent( op, si, NULL,
1324                                                         &syncCookie, m );
1325                                         }
1326
1327                                         if ( syncCookie.ctxcsn )
1328                                         {
1329                                                 rc = syncrepl_updateCookie( si, op, &syncCookie);
1330                                         }
1331                                 }
1332
1333                                 ldap_memfree( retoid );
1334                                 ber_bvfree( retdata );
1335
1336                         } else {
1337                                 Debug( LDAP_DEBUG_ANY, "do_syncrep2: %s "
1338                                         "unknown intermediate response (%d)\n",
1339                                         si->si_ridtxt, rc, 0 );
1340                                 ldap_memfree( retoid );
1341                                 ber_bvfree( retdata );
1342                         }
1343                         break;
1344
1345                 default:
1346                         Debug( LDAP_DEBUG_ANY, "do_syncrep2: %s "
1347                                 "unknown message (0x%02lx)\n",
1348                                 si->si_ridtxt,
1349                                 (unsigned long)ldap_msgtype( msg ), 0 );
1350                         break;
1351
1352                 }
1353                 if ( !BER_BVISNULL( &syncCookie.octet_str ) ) {
1354                         slap_sync_cookie_free( &syncCookie_req, 0 );
1355                         slap_dup_sync_cookie( &syncCookie_req, &syncCookie );
1356                         slap_sync_cookie_free( &syncCookie, 0 );
1357                 }
1358                 ldap_msgfree( msg );
1359                 msg = NULL;
1360                 if ( ldap_pvt_thread_pool_pausing( &connection_pool )) {
1361                         slap_sync_cookie_free( &syncCookie, 0 );
1362                         slap_sync_cookie_free( &syncCookie_req, 0 );
1363                         return SYNC_PAUSED;
1364                 }
1365         }
1366
1367         if ( rc == -1 ) {
1368                 rc = LDAP_OTHER;
1369                 ldap_get_option( si->si_ld, LDAP_OPT_ERROR_NUMBER, &rc );
1370                 err = rc;
1371         }
1372
1373 done:
1374         if ( err != LDAP_SUCCESS ) {
1375                 Debug( LDAP_DEBUG_ANY,
1376                         "do_syncrep2: %s (%d) %s\n",
1377                         si->si_ridtxt, err, ldap_err2string( err ) );
1378         }
1379
1380         slap_sync_cookie_free( &syncCookie, 0 );
1381         slap_sync_cookie_free( &syncCookie_req, 0 );
1382
1383         if ( msg ) ldap_msgfree( msg );
1384
1385         if ( rc && rc != LDAP_SYNC_REFRESH_REQUIRED && si->si_ld ) {
1386                 if ( si->si_conn ) {
1387                         connection_client_stop( si->si_conn );
1388                         si->si_conn = NULL;
1389                 }
1390                 ldap_unbind_ext( si->si_ld, NULL, NULL );
1391                 si->si_ld = NULL;
1392         }
1393
1394         return rc;
1395 }
1396
1397 static void *
1398 do_syncrepl(
1399         void    *ctx,
1400         void    *arg )
1401 {
1402         struct re_s* rtask = arg;
1403         syncinfo_t *si = ( syncinfo_t * ) rtask->arg;
1404         Connection conn = {0};
1405         OperationBuffer opbuf;
1406         Operation *op;
1407         int rc = LDAP_SUCCESS;
1408         int dostop = 0;
1409         ber_socket_t s;
1410         int i, defer = 1, fail = 0, freeinfo = 0;
1411         Backend *be;
1412
1413         if ( si == NULL )
1414                 return NULL;
1415         if ( slapd_shutdown )
1416                 return NULL;
1417
1418         Debug( LDAP_DEBUG_TRACE, "=>do_syncrepl %s\n", si->si_ridtxt, 0, 0 );
1419
1420         /* Don't get stuck here while a pause is initiated */
1421         while ( ldap_pvt_thread_mutex_trylock( &si->si_mutex )) {
1422                 if ( slapd_shutdown )
1423                         return NULL;
1424                 if ( !ldap_pvt_thread_pool_pausecheck( &connection_pool ))
1425                         ldap_pvt_thread_yield();
1426         }
1427
1428         if ( si->si_ctype < 1 ) {
1429                 goto deleted;
1430         }
1431
1432         switch( abs( si->si_type ) ) {
1433         case LDAP_SYNC_REFRESH_ONLY:
1434         case LDAP_SYNC_REFRESH_AND_PERSIST:
1435                 break;
1436         default:
1437                 ldap_pvt_thread_mutex_unlock( &si->si_mutex );
1438                 return NULL;
1439         }
1440
1441         if ( slapd_shutdown ) {
1442                 if ( si->si_ld ) {
1443                         if ( si->si_conn ) {
1444                                 connection_client_stop( si->si_conn );
1445                                 si->si_conn = NULL;
1446                         }
1447                         ldap_unbind_ext( si->si_ld, NULL, NULL );
1448                         si->si_ld = NULL;
1449                 }
1450                 ldap_pvt_thread_mutex_unlock( &si->si_mutex );
1451                 return NULL;
1452         }
1453
1454         connection_fake_init( &conn, &opbuf, ctx );
1455         op = &opbuf.ob_op;
1456         /* o_connids must be unique for slap_graduate_commit_csn */
1457         op->o_connid = SLAPD_SYNC_RID2SYNCCONN(si->si_rid);
1458
1459         op->o_managedsait = SLAP_CONTROL_NONCRITICAL;
1460         be = si->si_be;
1461
1462         /* Coordinate contextCSN updates with any syncprov overlays
1463          * in use. This may be complicated by the use of the glue
1464          * overlay.
1465          *
1466          * Typically there is a single syncprov mastering the entire
1467          * glued tree. In that case, our contextCSN updates should
1468          * go to the master DB. But if there is no syncprov on the
1469          * master DB, then nothing special is needed here.
1470          *
1471          * Alternatively, there may be individual syncprov overlays
1472          * on each glued branch. In that case, each syncprov only
1473          * knows about changes within its own branch. And so our
1474          * contextCSN updates should only go to the local DB.
1475          */
1476         if ( !si->si_wbe ) {
1477                 if ( SLAP_GLUE_SUBORDINATE( be ) && !overlay_is_inst( be, "syncprov" )) {
1478                         BackendDB * top_be = select_backend( &be->be_nsuffix[0], 1 );
1479                         if ( overlay_is_inst( top_be, "syncprov" ))
1480                                 si->si_wbe = top_be;
1481                         else
1482                                 si->si_wbe = be;
1483                 } else {
1484                         si->si_wbe = be;
1485                 }
1486                 if ( SLAP_SYNC_SUBENTRY( si->si_wbe )) {
1487                         build_new_dn( &si->si_contextdn, &si->si_wbe->be_nsuffix[0],
1488                                 (struct berval *)&slap_ldapsync_cn_bv, NULL );
1489                 } else {
1490                         si->si_contextdn = si->si_wbe->be_nsuffix[0];
1491                 }
1492         }
1493         if ( !si->si_schemachecking )
1494                 op->o_no_schema_check = 1;
1495
1496         /* Establish session, do search */
1497         if ( !si->si_ld ) {
1498                 si->si_refreshDelete = 0;
1499                 si->si_refreshPresent = 0;
1500
1501                 if ( si->si_presentlist ) {
1502                     avl_free( si->si_presentlist, ch_free );
1503                     si->si_presentlist = NULL;
1504                 }
1505
1506                 /* use main DB when retrieving contextCSN */
1507                 op->o_bd = si->si_wbe;
1508                 op->o_dn = op->o_bd->be_rootdn;
1509                 op->o_ndn = op->o_bd->be_rootndn;
1510                 rc = do_syncrep1( op, si );
1511         }
1512
1513 reload:
1514         /* Process results */
1515         if ( rc == LDAP_SUCCESS ) {
1516                 ldap_get_option( si->si_ld, LDAP_OPT_DESC, &s );
1517
1518                 /* use current DB */
1519                 op->o_bd = be;
1520                 op->o_dn = op->o_bd->be_rootdn;
1521                 op->o_ndn = op->o_bd->be_rootndn;
1522                 rc = do_syncrep2( op, si );
1523                 if ( rc == LDAP_SYNC_REFRESH_REQUIRED ) {
1524                         rc = ldap_sync_search( si, op->o_tmpmemctx );
1525                         goto reload;
1526                 }
1527
1528 deleted:
1529                 /* We got deleted while running on cn=config */
1530                 if ( si->si_ctype < 1 ) {
1531                         if ( si->si_ctype == -1 ) {
1532                                 si->si_ctype = 0;
1533                                 freeinfo = 1;
1534                         }
1535                         if ( si->si_conn )
1536                                 dostop = 1;
1537                         rc = -1;
1538                 }
1539
1540                 if ( rc != SYNC_PAUSED ) {
1541                         if ( abs(si->si_type) == LDAP_SYNC_REFRESH_AND_PERSIST ) {
1542                                 /* If we succeeded, enable the connection for further listening.
1543                                  * If we failed, tear down the connection and reschedule.
1544                                  */
1545                                 if ( rc == LDAP_SUCCESS ) {
1546                                         if ( si->si_conn ) {
1547                                                 connection_client_enable( si->si_conn );
1548                                         } else {
1549                                                 si->si_conn = connection_client_setup( s, do_syncrepl, arg );
1550                                         }
1551                                 } else if ( si->si_conn ) {
1552                                         dostop = 1;
1553                                 }
1554                         } else {
1555                                 if ( rc == -2 ) rc = 0;
1556                         }
1557                 }
1558         }
1559
1560         /* At this point, we have 5 cases:
1561          * 1) for any hard failure, give up and remove this task
1562          * 2) for ServerDown, reschedule this task to run later
1563          * 3) for threadpool pause, reschedule to run immediately
1564          * 4) for Refresh and Success, reschedule to run
1565          * 5) for Persist and Success, reschedule to defer
1566          */
1567         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
1568
1569         if ( ldap_pvt_runqueue_isrunning( &slapd_rq, rtask ) ) {
1570                 ldap_pvt_runqueue_stoptask( &slapd_rq, rtask );
1571         }
1572
1573         if ( dostop ) {
1574                 connection_client_stop( si->si_conn );
1575                 si->si_conn = NULL;
1576         }
1577
1578         if ( rc == SYNC_PAUSED ) {
1579                 rtask->interval.tv_sec = 0;
1580                 ldap_pvt_runqueue_resched( &slapd_rq, rtask, 0 );
1581                 rtask->interval.tv_sec = si->si_interval;
1582                 rc = 0;
1583         } else if ( rc == LDAP_SUCCESS ) {
1584                 if ( si->si_type == LDAP_SYNC_REFRESH_ONLY ) {
1585                         defer = 0;
1586                 }
1587                 rtask->interval.tv_sec = si->si_interval;
1588                 ldap_pvt_runqueue_resched( &slapd_rq, rtask, defer );
1589                 if ( si->si_retrynum ) {
1590                         for ( i = 0; si->si_retrynum_init[i] != RETRYNUM_TAIL; i++ ) {
1591                                 si->si_retrynum[i] = si->si_retrynum_init[i];
1592                         }
1593                         si->si_retrynum[i] = RETRYNUM_TAIL;
1594                 }
1595         } else {
1596                 for ( i = 0; si->si_retrynum && si->si_retrynum[i] <= 0; i++ ) {
1597                         if ( si->si_retrynum[i] == RETRYNUM_FOREVER || si->si_retrynum[i] == RETRYNUM_TAIL )
1598                                 break;
1599                 }
1600
1601                 if ( si->si_ctype < 1
1602                         || !si->si_retrynum || si->si_retrynum[i] == RETRYNUM_TAIL ) {
1603                         if ( si->si_re ) {
1604                                 ldap_pvt_runqueue_remove( &slapd_rq, rtask );
1605                                 si->si_re = NULL;
1606                         }
1607                         fail = RETRYNUM_TAIL;
1608                 } else if ( RETRYNUM_VALID( si->si_retrynum[i] ) ) {
1609                         if ( si->si_retrynum[i] > 0 )
1610                                 si->si_retrynum[i]--;
1611                         fail = si->si_retrynum[i];
1612                         rtask->interval.tv_sec = si->si_retryinterval[i];
1613                         ldap_pvt_runqueue_resched( &slapd_rq, rtask, 0 );
1614                         slap_wake_listener();
1615                 }
1616         }
1617
1618         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
1619         ldap_pvt_thread_mutex_unlock( &si->si_mutex );
1620
1621         if ( rc ) {
1622                 if ( fail == RETRYNUM_TAIL ) {
1623                         Debug( LDAP_DEBUG_ANY,
1624                                 "do_syncrepl: %s rc %d quitting\n",
1625                                 si->si_ridtxt, rc, 0 );
1626                 } else if ( fail > 0 ) {
1627                         Debug( LDAP_DEBUG_ANY,
1628                                 "do_syncrepl: %s rc %d retrying (%d retries left)\n",
1629                                 si->si_ridtxt, rc, fail );
1630                 } else {
1631                         Debug( LDAP_DEBUG_ANY,
1632                                 "do_syncrepl: %s rc %d retrying\n",
1633                                 si->si_ridtxt, rc, 0 );
1634                 }
1635         }
1636
1637         /* Do final delete cleanup */
1638         if ( freeinfo ) {
1639                 syncinfo_free( si, 0 );
1640         }
1641         return NULL;
1642 }
1643
1644 #ifdef ENABLE_REWRITE
1645 static int
1646 syncrepl_rewrite_dn(
1647         syncinfo_t *si,
1648         struct berval *dn,
1649         struct berval *sdn )
1650 {
1651         char nul;
1652         int rc;
1653
1654         nul = dn->bv_val[dn->bv_len];
1655         dn->bv_val[dn->bv_len] = 0;
1656         rc = rewrite( si->si_rewrite, SUFFIXM_CTX, dn->bv_val, &sdn->bv_val );
1657         dn->bv_val[dn->bv_len] = nul;
1658
1659         if ( sdn->bv_val == dn->bv_val )
1660                 sdn->bv_val = NULL;
1661         else if ( rc == REWRITE_REGEXEC_OK && sdn->bv_val )
1662                 sdn->bv_len = strlen( sdn->bv_val );
1663         return rc;
1664 }
1665 #define REWRITE_VAL(si, ad, bv, bv2)    \
1666         BER_BVZERO( &bv2 );     \
1667         if ( si->si_rewrite && ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName) \
1668                 syncrepl_rewrite_dn( si, &bv, &bv2); \
1669         if ( BER_BVISNULL( &bv2 ))  \
1670                 ber_dupbv( &bv2, &bv )
1671 #define REWRITE_DN(si, bv, bv2, dn, ndn) \
1672         BER_BVZERO( &bv2 );     \
1673         if (si->si_rewrite) \
1674                 syncrepl_rewrite_dn(si, &bv, &bv2); \
1675         rc = dnPrettyNormal( NULL, bv2.bv_val ? &bv2 : &bv, &dn, &ndn, op->o_tmpmemctx ); \
1676         ch_free(bv2.bv_val)
1677 #else
1678 #define REWRITE_VAL(si, ad, bv, bv2)    ber_dupbv(&bv2, &bv)
1679 #define REWRITE_DN(si, bv, bv2, dn, ndn) \
1680         rc = dnPrettyNormal( NULL, &bv, &dn, &ndn, op->o_tmpmemctx )
1681 #endif
1682
1683
1684 static slap_verbmasks modops[] = {
1685         { BER_BVC("add"), LDAP_REQ_ADD },
1686         { BER_BVC("delete"), LDAP_REQ_DELETE },
1687         { BER_BVC("modify"), LDAP_REQ_MODIFY },
1688         { BER_BVC("modrdn"), LDAP_REQ_MODRDN},
1689         { BER_BVNULL, 0 }
1690 };
1691
1692 static int
1693 syncrepl_accesslog_mods(
1694         syncinfo_t *si,
1695         struct berval *vals,
1696         struct Modifications **modres
1697 )
1698 {
1699         char *colon;
1700         const char *text;
1701         AttributeDescription *ad;
1702         struct berval bv, bv2;
1703         short op;
1704         Modifications *mod = NULL, *modlist = NULL, **modtail;
1705         int i, rc = 0;
1706
1707         modtail = &modlist;
1708
1709         for (i=0; !BER_BVISNULL( &vals[i] ); i++) {
1710                 ad = NULL;
1711                 bv = vals[i];
1712
1713                 colon = ber_bvchr( &bv, ':' );
1714                 if ( !colon ) {
1715                         /* Invalid */
1716                         continue;
1717                 }
1718
1719                 bv.bv_len = colon - bv.bv_val;
1720                 if ( slap_bv2ad( &bv, &ad, &text ) ) {
1721                         /* Invalid */
1722                         Debug( LDAP_DEBUG_ANY, "syncrepl_accesslog_mods: %s "
1723                                 "Invalid attribute %s, %s\n",
1724                                 si->si_ridtxt, bv.bv_val, text );
1725                         slap_mods_free( modlist, 1 );
1726                         modlist = NULL;
1727                         rc = -1;
1728                         break;
1729                 }
1730
1731                 /* Ignore dynamically generated attrs */
1732                 if ( ad->ad_type->sat_flags & SLAP_AT_DYNAMIC ) {
1733                         continue;
1734                 }
1735
1736                 /* Ignore excluded attrs */
1737                 if ( ldap_charray_inlist( si->si_exattrs,
1738                         ad->ad_type->sat_cname.bv_val ) )
1739                 {
1740                         continue;
1741                 }
1742
1743                 switch(colon[1]) {
1744                 case '+':       op = LDAP_MOD_ADD; break;
1745                 case '-':       op = LDAP_MOD_DELETE; break;
1746                 case '=':       op = LDAP_MOD_REPLACE; break;
1747                 case '#':       op = LDAP_MOD_INCREMENT; break;
1748                 default:        continue;
1749                 }
1750
1751                 if ( !mod || ad != mod->sml_desc || op != mod->sml_op ) {
1752                         mod = (Modifications *) ch_malloc( sizeof( Modifications ) );
1753                         mod->sml_flags = 0;
1754                         mod->sml_op = op;
1755                         mod->sml_next = NULL;
1756                         mod->sml_desc = ad;
1757                         mod->sml_type = ad->ad_cname;
1758                         mod->sml_values = NULL;
1759                         mod->sml_nvalues = NULL;
1760                         mod->sml_numvals = 0;
1761
1762                         *modtail = mod;
1763                         modtail = &mod->sml_next;
1764                 }
1765                 if ( colon[2] == ' ' ) {
1766                         bv.bv_val = colon + 3;
1767                         bv.bv_len = vals[i].bv_len - ( bv.bv_val - vals[i].bv_val );
1768                         REWRITE_VAL( si, ad, bv, bv2 );
1769                         ber_bvarray_add( &mod->sml_values, &bv2 );
1770                         mod->sml_numvals++;
1771                 }
1772         }
1773         *modres = modlist;
1774         return rc;
1775 }
1776
1777 static int
1778 syncrepl_changelog_mods(
1779         syncinfo_t *si,
1780         struct berval *vals,
1781         struct Modifications **modres
1782 )
1783 {
1784         return -1;      /* FIXME */
1785 }
1786
1787 typedef struct OpExtraSync {
1788         OpExtra oe;
1789         syncinfo_t *oe_si;
1790 } OpExtraSync;
1791
1792 /* Copy the original modlist, split Replace ops into Delete/Add,
1793  * and drop mod opattrs since this modification is in the past.
1794  */
1795 static Modifications *mods_dup( Operation *op, Modifications *modlist, int match )
1796 {
1797         Modifications *mod, *modnew = NULL, *modtail = NULL;
1798         int size;
1799         for ( ; modlist; modlist = modlist->sml_next ) {
1800                 /* older ops */
1801                 if ( match < 0 ) {
1802                         if ( modlist->sml_desc == slap_schema.si_ad_modifiersName ||
1803                                 modlist->sml_desc == slap_schema.si_ad_modifyTimestamp ||
1804                                 modlist->sml_desc == slap_schema.si_ad_entryCSN )
1805                                 continue;
1806                         if ( modlist->sml_op == LDAP_MOD_REPLACE ) {
1807                                 mod = op->o_tmpalloc( sizeof(Modifications), op->o_tmpmemctx );
1808                                 mod->sml_desc = modlist->sml_desc;
1809                                 mod->sml_values = NULL;
1810                                 mod->sml_nvalues = NULL;
1811                                 mod->sml_op = LDAP_MOD_DELETE;
1812                                 mod->sml_numvals = 0;
1813                                 mod->sml_flags = 0;
1814                                 if ( !modnew )
1815                                         modnew = mod;
1816                                 if ( modtail )
1817                                         modtail->sml_next = mod;
1818                                 modtail = mod;
1819                         }
1820                 }
1821                 if ( modlist->sml_numvals ) {
1822                         size = (modlist->sml_numvals+1) * sizeof(struct berval);
1823                         if ( modlist->sml_nvalues ) size *= 2;
1824                 } else {
1825                         size = 0;
1826                 }
1827                 size += sizeof(Modifications);
1828                 mod = op->o_tmpalloc( size, op->o_tmpmemctx );
1829                 if ( !modnew )
1830                         modnew = mod;
1831                 if ( modtail )
1832                         modtail->sml_next = mod;
1833                 modtail = mod;
1834                 mod->sml_desc = modlist->sml_desc;
1835                 mod->sml_numvals = modlist->sml_numvals;
1836                 mod->sml_flags = 0;
1837                 if ( modlist->sml_numvals ) {
1838                         int i;
1839                         mod->sml_values = (BerVarray)(mod+1);
1840                         for (i=0; i<mod->sml_numvals; i++)
1841                                 mod->sml_values[i] = modlist->sml_values[i];
1842                         BER_BVZERO(&mod->sml_values[i]);
1843                         if ( modlist->sml_nvalues ) {
1844                                 mod->sml_nvalues = mod->sml_values + mod->sml_numvals + 1;
1845                                 for (i=0; i<mod->sml_numvals; i++)
1846                                         mod->sml_nvalues[i] = modlist->sml_nvalues[i];
1847                                 BER_BVZERO(&mod->sml_nvalues[i]);
1848                         } else {
1849                                 mod->sml_nvalues = NULL;
1850                         }
1851                 } else {
1852                         mod->sml_values = NULL;
1853                         mod->sml_nvalues = NULL;
1854                 }
1855                 if ( match < 0 && modlist->sml_op == LDAP_MOD_REPLACE )
1856                         mod->sml_op = LDAP_MOD_ADD;
1857                 else
1858                         mod->sml_op = modlist->sml_op;
1859                 mod->sml_next = NULL;
1860         }
1861         return modnew;
1862 }
1863
1864 typedef struct resolve_ctxt {
1865         syncinfo_t *rx_si;
1866         Modifications *rx_mods;
1867 } resolve_ctxt;
1868
1869 static void
1870 compare_vals( Modifications *m1, Modifications *m2 )
1871 {
1872         int i, j;
1873         struct berval *bv1, *bv2;
1874
1875         if ( m2->sml_nvalues ) {
1876                 bv2 = m2->sml_nvalues;
1877                 bv1 = m1->sml_nvalues;
1878         } else {
1879                 bv2 = m2->sml_values;
1880                 bv1 = m1->sml_values;
1881         }
1882         for ( j=0; j<m2->sml_numvals; j++ ) {
1883                 for ( i=0; i<m1->sml_numvals; i++ ) {
1884                         if ( !ber_bvcmp( &bv1[i], &bv2[j] )) {
1885                                 int k;
1886                                 for ( k=i; k<m1->sml_numvals-1; k++ ) {
1887                                         m1->sml_values[k] = m1->sml_values[k+1];
1888                                         if ( m1->sml_nvalues )
1889                                                 m1->sml_nvalues[k] = m1->sml_nvalues[k+1];
1890                                 }
1891                                 BER_BVZERO(&m1->sml_values[k]);
1892                                 if ( m1->sml_nvalues ) {
1893                                         BER_BVZERO(&m1->sml_nvalues[k]);
1894                                 }
1895                                 m1->sml_numvals--;
1896                                 i--;
1897                         }
1898                 }
1899         }
1900 }
1901
1902 static int
1903 syncrepl_resolve_cb( Operation *op, SlapReply *rs )
1904 {
1905         if ( rs->sr_type == REP_SEARCH ) {
1906                 resolve_ctxt *rx = op->o_callback->sc_private;
1907                 Attribute *a = attr_find( rs->sr_entry->e_attrs, ad_reqMod );
1908                 if ( a ) {
1909                         Modifications *oldmods, *newmods, *m1, *m2, **prev;
1910                         oldmods = rx->rx_mods;
1911                         syncrepl_accesslog_mods( rx->rx_si, a->a_vals, &newmods );
1912                         for ( m2 = newmods; m2; m2=m2->sml_next ) {
1913                                 for ( prev = &oldmods, m1 = *prev; m1; m1 = *prev ) {
1914                                         if ( m1->sml_desc != m2->sml_desc ) {
1915                                                 prev = &m1->sml_next;
1916                                                 continue;
1917                                         }
1918                                         if ( m2->sml_op == LDAP_MOD_DELETE ||
1919                                                 m2->sml_op == LDAP_MOD_REPLACE ) {
1920                                                 int numvals = m2->sml_numvals;
1921                                                 if ( m2->sml_op == LDAP_MOD_REPLACE )
1922                                                         numvals = 0;
1923                                                 /* New delete All cancels everything */
1924                                                 if ( numvals == 0 ) {
1925 drop:
1926                                                         *prev = m1->sml_next;
1927                                                         op->o_tmpfree( m1, op->o_tmpmemctx );
1928                                                         continue;
1929                                                 }
1930                                                 if ( m1->sml_op == LDAP_MOD_DELETE ) {
1931                                                         if ( m1->sml_numvals == 0 ) {
1932                                                                 /* turn this to SOFTDEL later */
1933                                                                 m1->sml_flags = SLAP_MOD_INTERNAL;
1934                                                         } else {
1935                                                                 compare_vals( m1, m2 );
1936                                                                 if ( !m1->sml_numvals )
1937                                                                         goto drop;
1938                                                         }
1939                                                 } else if ( m1->sml_op == LDAP_MOD_ADD ) {
1940                                                         compare_vals( m1, m2 );
1941                                                         if ( !m1->sml_numvals )
1942                                                                 goto drop;
1943                                                 }
1944                                         }
1945
1946                                         if ( m2->sml_op == LDAP_MOD_ADD ||
1947                                                 m2->sml_op == LDAP_MOD_REPLACE ) {
1948                                                 if ( m1->sml_op == LDAP_MOD_DELETE ) {
1949                                                         if ( !m1->sml_numvals ) goto drop;
1950                                                         compare_vals( m1, m2 );
1951                                                         if ( !m1->sml_numvals )
1952                                                                 goto drop;
1953                                                 }
1954                                                 if ( m2->sml_desc->ad_type->sat_atype.at_single_value )
1955                                                         goto drop;
1956                                                 compare_vals( m1, m2 );
1957                                                 if ( !m1->sml_numvals )
1958                                                         goto drop;
1959                                         }
1960                                         prev = &m1->sml_next;
1961                                 }
1962                         }
1963                         slap_mods_free( newmods, 1 );
1964                 }
1965         }
1966         return LDAP_SUCCESS;
1967 }
1968
1969 typedef struct modify_ctxt {
1970         Modifications *mx_orig;
1971         Modifications *mx_free;
1972 } modify_ctxt;
1973
1974 static int
1975 syncrepl_modify_cb( Operation *op, SlapReply *rs )
1976 {
1977         slap_callback *sc = op->o_callback;
1978         modify_ctxt *mx = sc->sc_private;
1979         Modifications *ml;
1980
1981         op->orm_no_opattrs = 0;
1982         op->orm_modlist = mx->mx_orig;
1983         for ( ml = mx->mx_free; ml; ml = mx->mx_free ) {
1984                 mx->mx_free = ml->sml_next;
1985                 op->o_tmpfree( ml, op->o_tmpmemctx );
1986         }
1987         op->o_callback = sc->sc_next;
1988         op->o_tmpfree( sc, op->o_tmpmemctx );
1989         return SLAP_CB_CONTINUE;
1990 }
1991
1992 static int
1993 syncrepl_op_modify( Operation *op, SlapReply *rs )
1994 {
1995         slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1996         OpExtra *oex;
1997         syncinfo_t *si;
1998         Entry *e;
1999         int rc, match = 0;
2000         Modifications *mod, *newlist;
2001
2002         LDAP_SLIST_FOREACH( oex, &op->o_extra, oe_next ) {
2003                 if ( oex->oe_key == (void *)syncrepl_message_to_op )
2004                         break;
2005         }
2006         if ( !oex )
2007                 return SLAP_CB_CONTINUE;
2008
2009         si = ((OpExtraSync *)oex)->oe_si;
2010
2011         /* Check if entryCSN in modlist is newer than entryCSN in entry.
2012          * We do it here because the op has been serialized by accesslog
2013          * by the time we get here. If the CSN is new enough, just do the
2014          * mod. If not, we need to resolve conflicts.
2015          */
2016
2017         for ( mod = op->orm_modlist; mod; mod=mod->sml_next ) {
2018                 if ( mod->sml_desc == slap_schema.si_ad_entryCSN ) break;
2019         }
2020         /* FIXME: what should we do if entryCSN is missing from the mod? */
2021         if ( !mod )
2022                 return SLAP_CB_CONTINUE;
2023
2024         rc = overlay_entry_get_ov( op, &op->o_req_ndn, NULL, NULL, 0, &e, on );
2025         if ( rc == 0 ) {
2026                 Attribute *a;
2027                 const char *text;
2028                 a = attr_find( e->e_attrs, slap_schema.si_ad_entryCSN );
2029                 value_match( &match, slap_schema.si_ad_entryCSN,
2030                         slap_schema.si_ad_entryCSN->ad_type->sat_ordering,
2031                         SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
2032                         &mod->sml_nvalues[0], &a->a_nvals[0], &text );
2033                 overlay_entry_release_ov( op, e, 0, on );
2034         }
2035         /* equal? Should never happen */
2036         if ( match == 0 )
2037                 return LDAP_SUCCESS;
2038
2039         /* mod is older: resolve conflicts...
2040          * 1. Save/copy original modlist. Split Replace to Del/Add.
2041          * 2. Find all mods to this reqDN newer than the mod stamp.
2042          * 3. Resolve any mods in this request that affect attributes
2043          *    touched by newer mods.
2044          *    old         new
2045          *    delete all  delete all  drop
2046          *    delete all  delete X    SOFTDEL
2047          *    delete X    delete all  drop
2048          *    delete X    delete X    drop
2049          *    delete X    delete Y    OK
2050          *    delete all  add X       drop
2051          *    delete X    add X       drop
2052          *    delete X    add Y       OK
2053          *    add X       delete all  drop
2054          *    add X       delete X    drop
2055          *    add X       add X       drop
2056          *    add X       add Y       if SV, drop else OK
2057          *
2058          * 4. Swap original modlist back in response callback so
2059          *    that accesslog logs the original mod.
2060          *
2061          * Even if the mod is newer, other out-of-order changes may
2062          * have been committed, forcing us to tweak the modlist:
2063          * 1. Save/copy original modlist.
2064          * 2. Change deletes to soft deletes.
2065          * 3. Change Adds of single-valued attrs to Replace.
2066          */
2067
2068         newlist = mods_dup( op, op->orm_modlist, match );
2069
2070         /* mod is older */
2071         if ( match < 0 ) {
2072                 Operation op2 = *op;
2073                 AttributeName an[2];
2074                 const char *text;
2075                 struct berval bv;
2076                 char *ptr;
2077                 Modifications *ml;
2078                 int size, rc;
2079                 SlapReply rs1 = {0};
2080                 resolve_ctxt rx;
2081                 slap_callback cb = { NULL, syncrepl_resolve_cb, NULL, NULL };
2082
2083                 rx.rx_si = si;
2084                 rx.rx_mods = newlist;
2085                 cb.sc_private = &rx;
2086
2087                 op2.o_tag = LDAP_REQ_SEARCH;
2088                 op2.ors_scope = LDAP_SCOPE_SUBTREE;
2089                 op2.ors_deref = LDAP_DEREF_NEVER;
2090                 op2.o_req_dn = si->si_logbase;
2091                 op2.o_req_ndn = si->si_logbase;
2092                 op2.ors_tlimit = SLAP_NO_LIMIT;
2093                 op2.ors_slimit = SLAP_NO_LIMIT;
2094                 op2.ors_limit = NULL;
2095                 memset( an, 0, sizeof(an));
2096                 an[0].an_desc = ad_reqMod;
2097                 an[0].an_name = ad_reqMod->ad_cname;
2098                 op2.ors_attrs = an;
2099                 op2.ors_attrsonly = 0;
2100
2101                 bv = mod->sml_nvalues[0];
2102
2103                 size = sizeof("(&(entryCSN>=)(reqDN=))");
2104                 size += bv.bv_len + op->o_req_ndn.bv_len + si->si_logfilterstr.bv_len;
2105                 op2.ors_filterstr.bv_val = op->o_tmpalloc( size, op->o_tmpmemctx );
2106                 op2.ors_filterstr.bv_len = sprintf(op2.ors_filterstr.bv_val,
2107                         "(&(entryCSN>=%s)(reqDN=%s)%s)",
2108                         bv.bv_val, op->o_req_ndn.bv_val, si->si_logfilterstr.bv_val );
2109                 op2.ors_filter = str2filter_x( op, op2.ors_filterstr.bv_val );
2110
2111                 op2.o_callback = &cb;
2112                 op2.o_bd = select_backend( &op2.o_req_ndn, 1 );
2113                 op2.o_bd->be_search( &op2, &rs1 );
2114                 newlist = rx.rx_mods;
2115         }
2116
2117         {
2118                 slap_callback *sc = op->o_tmpalloc( sizeof(slap_callback) +
2119                         sizeof(modify_ctxt), op->o_tmpmemctx );
2120                 modify_ctxt *mx = (modify_ctxt *)(sc+1);
2121                 Modifications *ml;
2122
2123                 sc->sc_response = syncrepl_modify_cb;
2124                 sc->sc_private = mx;
2125                 sc->sc_next = op->o_callback;
2126                 sc->sc_cleanup = NULL;
2127                 op->o_callback = sc;
2128                 op->orm_no_opattrs = 1;
2129                 mx->mx_orig = op->orm_modlist;
2130                 mx->mx_free = newlist;
2131                 for ( ml = newlist; ml; ml=ml->sml_next ) {
2132                         if ( ml->sml_flags == SLAP_MOD_INTERNAL ) {
2133                                 ml->sml_flags = 0;
2134                                 ml->sml_op = SLAP_MOD_SOFTDEL;
2135                         }
2136                         else if ( ml->sml_op == LDAP_MOD_DELETE )
2137                                 ml->sml_op = SLAP_MOD_SOFTDEL;
2138                         else if ( ml->sml_op == LDAP_MOD_ADD &&
2139                                 ml->sml_desc->ad_type->sat_atype.at_single_value )
2140                                 ml->sml_op = LDAP_MOD_REPLACE;
2141                 }
2142                 op->orm_modlist = newlist;
2143                 op->o_csn = mod->sml_nvalues[0];
2144         }
2145         return SLAP_CB_CONTINUE;
2146 }
2147
2148 static int
2149 syncrepl_message_to_op(
2150         syncinfo_t      *si,
2151         Operation       *op,
2152         LDAPMessage     *msg
2153 )
2154 {
2155         BerElement      *ber = NULL;
2156         Modifications   *modlist = NULL;
2157         logschema *ls;
2158         SlapReply rs = { REP_RESULT };
2159         slap_callback cb = { NULL, null_callback, NULL, NULL };
2160
2161         const char      *text;
2162         char txtbuf[SLAP_TEXT_BUFLEN];
2163         size_t textlen = sizeof txtbuf;
2164
2165         struct berval   bdn, dn = BER_BVNULL, ndn;
2166         struct berval   bv, bv2, *bvals = NULL;
2167         struct berval   rdn = BER_BVNULL, sup = BER_BVNULL,
2168                 prdn = BER_BVNULL, nrdn = BER_BVNULL,
2169                 psup = BER_BVNULL, nsup = BER_BVNULL;
2170         int             rc, deleteOldRdn = 0, freeReqDn = 0;
2171         int             do_graduate = 0;
2172
2173         if ( ldap_msgtype( msg ) != LDAP_RES_SEARCH_ENTRY ) {
2174                 Debug( LDAP_DEBUG_ANY, "syncrepl_message_to_op: %s "
2175                         "Message type should be entry (%d)",
2176                         si->si_ridtxt, ldap_msgtype( msg ), 0 );
2177                 return -1;
2178         }
2179
2180         if ( si->si_syncdata == SYNCDATA_ACCESSLOG )
2181                 ls = &accesslog_sc;
2182         else
2183                 ls = &changelog_sc;
2184
2185         rc = ldap_get_dn_ber( si->si_ld, msg, &ber, &bdn );
2186
2187         if ( rc != LDAP_SUCCESS ) {
2188                 Debug( LDAP_DEBUG_ANY,
2189                         "syncrepl_message_to_op: %s dn get failed (%d)",
2190                         si->si_ridtxt, rc, 0 );
2191                 return rc;
2192         }
2193
2194         op->o_tag = LBER_DEFAULT;
2195         op->o_bd = si->si_wbe;
2196
2197         if ( BER_BVISEMPTY( &bdn )) {
2198                 Debug( LDAP_DEBUG_ANY,
2199                         "syncrepl_message_to_op: %s got empty dn",
2200                         si->si_ridtxt, 0, 0 );
2201                 return LDAP_OTHER;
2202         }
2203
2204         while (( rc = ldap_get_attribute_ber( si->si_ld, msg, ber, &bv, &bvals ) )
2205                 == LDAP_SUCCESS ) {
2206                 if ( bv.bv_val == NULL )
2207                         break;
2208
2209                 if ( !ber_bvstrcasecmp( &bv, &ls->ls_dn ) ) {
2210                         bdn = bvals[0];
2211                         REWRITE_DN( si, bdn, bv2, dn, ndn );
2212                         if ( rc != LDAP_SUCCESS ) {
2213                                 Debug( LDAP_DEBUG_ANY,
2214                                         "syncrepl_message_to_op: %s "
2215                                         "dn \"%s\" normalization failed (%d)",
2216                                         si->si_ridtxt, bdn.bv_val, rc );
2217                                 rc = -1;
2218                                 ch_free( bvals );
2219                                 goto done;
2220                         }
2221                         ber_dupbv( &op->o_req_dn, &dn );
2222                         ber_dupbv( &op->o_req_ndn, &ndn );
2223                         slap_sl_free( ndn.bv_val, op->o_tmpmemctx );
2224                         slap_sl_free( dn.bv_val, op->o_tmpmemctx );
2225                         freeReqDn = 1;
2226                 } else if ( !ber_bvstrcasecmp( &bv, &ls->ls_req ) ) {
2227                         int i = verb_to_mask( bvals[0].bv_val, modops );
2228                         if ( i < 0 ) {
2229                                 Debug( LDAP_DEBUG_ANY,
2230                                         "syncrepl_message_to_op: %s unknown op %s",
2231                                         si->si_ridtxt, bvals[0].bv_val, 0 );
2232                                 ch_free( bvals );
2233                                 rc = -1;
2234                                 goto done;
2235                         }
2236                         op->o_tag = modops[i].mask;
2237                 } else if ( !ber_bvstrcasecmp( &bv, &ls->ls_mod ) ) {
2238                         /* Parse attribute into modlist */
2239                         if ( si->si_syncdata == SYNCDATA_ACCESSLOG ) {
2240                                 rc = syncrepl_accesslog_mods( si, bvals, &modlist );
2241                         } else {
2242                                 rc = syncrepl_changelog_mods( si, bvals, &modlist );
2243                         }
2244                         if ( rc ) goto done;
2245                 } else if ( !ber_bvstrcasecmp( &bv, &ls->ls_newRdn ) ) {
2246                         rdn = bvals[0];
2247                 } else if ( !ber_bvstrcasecmp( &bv, &ls->ls_delRdn ) ) {
2248                         if ( !ber_bvstrcasecmp( &slap_true_bv, bvals ) ) {
2249                                 deleteOldRdn = 1;
2250                         }
2251                 } else if ( !ber_bvstrcasecmp( &bv, &ls->ls_newSup ) ) {
2252                         sup = bvals[0];
2253                 } else if ( !ber_bvstrcasecmp( &bv,
2254                         &slap_schema.si_ad_entryCSN->ad_cname ) )
2255                 {
2256                         slap_queue_csn( op, bvals );
2257                         do_graduate = 1;
2258                 }
2259                 ch_free( bvals );
2260         }
2261
2262         /* If we didn't get a mod type or a target DN, bail out */
2263         if ( op->o_tag == LBER_DEFAULT || BER_BVISNULL( &dn ) ) {
2264                 rc = -1;
2265                 goto done;
2266         }
2267
2268         op->o_callback = &cb;
2269         slap_op_time( &op->o_time, &op->o_tincr );
2270
2271         switch( op->o_tag ) {
2272         case LDAP_REQ_ADD:
2273         case LDAP_REQ_MODIFY:
2274                 /* If we didn't get required data, bail */
2275                 if ( !modlist ) goto done;
2276
2277                 rc = slap_mods_check( op, modlist, &text, txtbuf, textlen, NULL );
2278
2279                 if ( rc != LDAP_SUCCESS ) {
2280                         Debug( LDAP_DEBUG_ANY, "syncrepl_message_to_op: %s "
2281                                 "mods check (%s)\n",
2282                                 si->si_ridtxt, text, 0 );
2283                         goto done;
2284                 }
2285
2286                 if ( op->o_tag == LDAP_REQ_ADD ) {
2287                         Entry *e = entry_alloc();
2288                         op->ora_e = e;
2289                         op->ora_e->e_name = op->o_req_dn;
2290                         op->ora_e->e_nname = op->o_req_ndn;
2291                         freeReqDn = 0;
2292                         rc = slap_mods2entry( modlist, &op->ora_e, 1, 0, &text, txtbuf, textlen);
2293                         if( rc != LDAP_SUCCESS ) {
2294                                 Debug( LDAP_DEBUG_ANY, "syncrepl_message_to_op: %s "
2295                                 "mods2entry (%s)\n",
2296                                         si->si_ridtxt, text, 0 );
2297                         } else {
2298                                 rc = op->o_bd->be_add( op, &rs );
2299                                 Debug( LDAP_DEBUG_SYNC,
2300                                         "syncrepl_message_to_op: %s be_add %s (%d)\n",
2301                                         si->si_ridtxt, op->o_req_dn.bv_val, rc );
2302                                 do_graduate = 0;
2303                         }
2304                         if ( e == op->ora_e )
2305                                 be_entry_release_w( op, op->ora_e );
2306                 } else {
2307                         OpExtraSync oes;
2308                         op->orm_modlist = modlist;
2309                         op->o_bd = si->si_wbe;
2310                         /* delta-mmr needs additional checks in syncrepl_op_modify */
2311                         if ( SLAP_MULTIMASTER( op->o_bd )) {
2312                                 oes.oe.oe_key = (void *)syncrepl_message_to_op;
2313                                 oes.oe_si = si;
2314                                 LDAP_SLIST_INSERT_HEAD( &op->o_extra, &oes.oe, oe_next );
2315                         }
2316                         rc = op->o_bd->be_modify( op, &rs );
2317                         if ( SLAP_MULTIMASTER( op->o_bd )) {
2318                                 LDAP_SLIST_REMOVE( &op->o_extra, &oes.oe, OpExtra, oe_next );
2319                                 BER_BVZERO( &op->o_csn );
2320                         }
2321                         modlist = op->orm_modlist;
2322                         Debug( rc ? LDAP_DEBUG_ANY : LDAP_DEBUG_SYNC,
2323                                 "syncrepl_message_to_op: %s be_modify %s (%d)\n",
2324                                 si->si_ridtxt, op->o_req_dn.bv_val, rc );
2325                         op->o_bd = si->si_be;
2326                         do_graduate = 0;
2327                 }
2328                 break;
2329         case LDAP_REQ_MODRDN:
2330                 if ( BER_BVISNULL( &rdn ) ) goto done;
2331
2332                 if ( rdnPretty( NULL, &rdn, &prdn, NULL ) ) {
2333                         goto done;
2334                 }
2335                 if ( rdnNormalize( 0, NULL, NULL, &rdn, &nrdn, NULL ) ) {
2336                         goto done;
2337                 }
2338                 if ( !BER_BVISNULL( &sup ) ) {
2339                         REWRITE_DN( si, sup, bv2, psup, nsup );
2340                         if ( rc )
2341                                 goto done;
2342                         op->orr_newSup = &psup;
2343                         op->orr_nnewSup = &nsup;
2344                 } else {
2345                         op->orr_newSup = NULL;
2346                         op->orr_nnewSup = NULL;
2347                 }
2348                 op->orr_newrdn = prdn;
2349                 op->orr_nnewrdn = nrdn;
2350                 op->orr_deleteoldrdn = deleteOldRdn;
2351                 op->orr_modlist = NULL;
2352                 if ( slap_modrdn2mods( op, &rs ) ) {
2353                         goto done;
2354                 }
2355
2356                 /* Append modlist for operational attrs */
2357                 {
2358                         Modifications *m;
2359
2360                         for ( m = op->orr_modlist; m->sml_next; m = m->sml_next )
2361                                 ;
2362                         m->sml_next = modlist;
2363                         modlist = NULL;
2364                 }
2365                 rc = op->o_bd->be_modrdn( op, &rs );
2366                 slap_mods_free( op->orr_modlist, 1 );
2367                 Debug( rc ? LDAP_DEBUG_ANY : LDAP_DEBUG_SYNC,
2368                         "syncrepl_message_to_op: %s be_modrdn %s (%d)\n",
2369                         si->si_ridtxt, op->o_req_dn.bv_val, rc );
2370                 do_graduate = 0;
2371                 break;
2372         case LDAP_REQ_DELETE:
2373                 rc = op->o_bd->be_delete( op, &rs );
2374                 Debug( rc ? LDAP_DEBUG_ANY : LDAP_DEBUG_SYNC,
2375                         "syncrepl_message_to_op: %s be_delete %s (%d)\n",
2376                         si->si_ridtxt, op->o_req_dn.bv_val, rc );
2377                 do_graduate = 0;
2378                 break;
2379         }
2380 done:
2381         if ( do_graduate )
2382                 slap_graduate_commit_csn( op );
2383         op->o_bd = si->si_be;
2384         op->o_tmpfree( op->o_csn.bv_val, op->o_tmpmemctx );
2385         BER_BVZERO( &op->o_csn );
2386         if ( modlist ) {
2387                 slap_mods_free( modlist, op->o_tag != LDAP_REQ_ADD );
2388         }
2389         if ( !BER_BVISNULL( &rdn ) ) {
2390                 if ( !BER_BVISNULL( &nsup ) ) {
2391                         ch_free( nsup.bv_val );
2392                 }
2393                 if ( !BER_BVISNULL( &psup ) ) {
2394                         ch_free( psup.bv_val );
2395                 }
2396                 if ( !BER_BVISNULL( &nrdn ) ) {
2397                         ch_free( nrdn.bv_val );
2398                 }
2399                 if ( !BER_BVISNULL( &prdn ) ) {
2400                         ch_free( prdn.bv_val );
2401                 }
2402         }
2403         if ( freeReqDn ) {
2404                 ch_free( op->o_req_ndn.bv_val );
2405                 ch_free( op->o_req_dn.bv_val );
2406         }
2407         ber_free( ber, 0 );
2408         return rc;
2409 }
2410
2411 static int
2412 syncrepl_message_to_entry(
2413         syncinfo_t      *si,
2414         Operation       *op,
2415         LDAPMessage     *msg,
2416         Modifications   **modlist,
2417         Entry                   **entry,
2418         int             syncstate,
2419         struct berval   *syncUUID
2420 )
2421 {
2422         Entry           *e = NULL;
2423         BerElement      *ber = NULL;
2424         Modifications   tmp;
2425         Modifications   *mod;
2426         Modifications   **modtail = modlist;
2427
2428         const char      *text;
2429         char txtbuf[SLAP_TEXT_BUFLEN];
2430         size_t textlen = sizeof txtbuf;
2431
2432         struct berval   bdn = BER_BVNULL, dn, ndn, bv2;
2433         int             rc, is_ctx;
2434
2435         *modlist = NULL;
2436
2437         if ( ldap_msgtype( msg ) != LDAP_RES_SEARCH_ENTRY ) {
2438                 Debug( LDAP_DEBUG_ANY, "syncrepl_message_to_entry: %s "
2439                         "Message type should be entry (%d)",
2440                         si->si_ridtxt, ldap_msgtype( msg ), 0 );
2441                 return -1;
2442         }
2443
2444         op->o_tag = LDAP_REQ_ADD;
2445
2446         rc = ldap_get_dn_ber( si->si_ld, msg, &ber, &bdn );
2447         if ( rc != LDAP_SUCCESS ) {
2448                 Debug( LDAP_DEBUG_ANY,
2449                         "syncrepl_message_to_entry: %s dn get failed (%d)",
2450                         si->si_ridtxt, rc, 0 );
2451                 return rc;
2452         }
2453
2454         if ( BER_BVISEMPTY( &bdn ) && !BER_BVISEMPTY( &op->o_bd->be_nsuffix[0] ) ) {
2455                 Debug( LDAP_DEBUG_ANY,
2456                         "syncrepl_message_to_entry: %s got empty dn",
2457                         si->si_ridtxt, 0, 0 );
2458                 return LDAP_OTHER;
2459         }
2460
2461         /* syncUUID[0] is normalized UUID received over the wire
2462          * syncUUID[1] is denormalized UUID, generated here
2463          */
2464         (void)slap_uuidstr_from_normalized( &syncUUID[1], &syncUUID[0], op->o_tmpmemctx );
2465         Debug( LDAP_DEBUG_SYNC,
2466                 "syncrepl_message_to_entry: %s DN: %s, UUID: %s\n",
2467                 si->si_ridtxt, bdn.bv_val, syncUUID[1].bv_val );
2468
2469         if ( syncstate == LDAP_SYNC_PRESENT || syncstate == LDAP_SYNC_DELETE ) {
2470                 /* NOTE: this could be done even before decoding the DN,
2471                  * although encoding errors wouldn't be detected */
2472                 rc = LDAP_SUCCESS;
2473                 goto done;
2474         }
2475
2476         if ( entry == NULL ) {
2477                 return -1;
2478         }
2479
2480         REWRITE_DN( si, bdn, bv2, dn, ndn );
2481         if ( rc != LDAP_SUCCESS ) {
2482                 /* One of the things that could happen is that the schema
2483                  * is not lined-up; this could result in unknown attributes.
2484                  * A value non conformant to the syntax should be unlikely,
2485                  * except when replicating between different versions
2486                  * of the software, or when syntax validation bugs are fixed
2487                  */
2488                 Debug( LDAP_DEBUG_ANY,
2489                         "syncrepl_message_to_entry: "
2490                         "%s dn \"%s\" normalization failed (%d)",
2491                         si->si_ridtxt, bdn.bv_val, rc );
2492                 return rc;
2493         }
2494
2495         ber_dupbv( &op->o_req_dn, &dn );
2496         ber_dupbv( &op->o_req_ndn, &ndn );
2497         slap_sl_free( ndn.bv_val, op->o_tmpmemctx );
2498         slap_sl_free( dn.bv_val, op->o_tmpmemctx );
2499
2500         is_ctx = dn_match( &op->o_req_ndn, &op->o_bd->be_nsuffix[0] );
2501
2502         e = entry_alloc();
2503         e->e_name = op->o_req_dn;
2504         e->e_nname = op->o_req_ndn;
2505
2506         while ( ber_remaining( ber ) ) {
2507                 if ( (ber_scanf( ber, "{mW}", &tmp.sml_type, &tmp.sml_values ) ==
2508                         LBER_ERROR ) || BER_BVISNULL( &tmp.sml_type ) )
2509                 {
2510                         break;
2511                 }
2512
2513                 /* Drop all updates to the contextCSN of the context entry
2514                  * (ITS#4622, etc.)
2515                  */
2516                 if ( is_ctx && !strcasecmp( tmp.sml_type.bv_val,
2517                         slap_schema.si_ad_contextCSN->ad_cname.bv_val )) {
2518                         ber_bvarray_free( tmp.sml_values );
2519                         continue;
2520                 }
2521
2522                 mod  = (Modifications *) ch_malloc( sizeof( Modifications ) );
2523
2524                 mod->sml_op = LDAP_MOD_REPLACE;
2525                 mod->sml_flags = 0;
2526                 mod->sml_next = NULL;
2527                 mod->sml_desc = NULL;
2528                 mod->sml_type = tmp.sml_type;
2529                 mod->sml_values = tmp.sml_values;
2530                 mod->sml_nvalues = NULL;
2531                 mod->sml_numvals = 0;   /* slap_mods_check will set this */
2532
2533 #ifdef ENABLE_REWRITE
2534                 if (si->si_rewrite) {
2535                         AttributeDescription *ad = NULL;
2536                         slap_bv2ad( &tmp.sml_type, &ad, &text );
2537                         if ( ad ) {
2538                                 mod->sml_desc = ad;
2539                                 mod->sml_type = ad->ad_cname;
2540                                 if ( ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) {
2541                                         int i;
2542                                         for ( i = 0; tmp.sml_values[i].bv_val; i++ ) {
2543                                                 syncrepl_rewrite_dn( si, &tmp.sml_values[i], &bv2);
2544                                                 if ( !BER_BVISNULL( &bv2 )) {
2545                                                         ber_memfree( tmp.sml_values[i].bv_val );
2546                                                         tmp.sml_values[i] = bv2;
2547                                                 }
2548                                         }
2549                                 }
2550                         }
2551                 }
2552 #endif
2553                 *modtail = mod;
2554                 modtail = &mod->sml_next;
2555         }
2556
2557         if ( *modlist == NULL ) {
2558                 Debug( LDAP_DEBUG_ANY, "syncrepl_message_to_entry: %s no attributes\n",
2559                         si->si_ridtxt, 0, 0 );
2560                 rc = -1;
2561                 goto done;
2562         }
2563
2564         rc = slap_mods_check( op, *modlist, &text, txtbuf, textlen, NULL );
2565
2566         if ( rc != LDAP_SUCCESS ) {
2567                 Debug( LDAP_DEBUG_ANY, "syncrepl_message_to_entry: %s mods check (%s)\n",
2568                         si->si_ridtxt, text, 0 );
2569                 goto done;
2570         }
2571
2572         /* Strip out dynamically generated attrs */
2573         for ( modtail = modlist; *modtail ; ) {
2574                 mod = *modtail;
2575                 if ( mod->sml_desc->ad_type->sat_flags & SLAP_AT_DYNAMIC ) {
2576                         *modtail = mod->sml_next;
2577                         slap_mod_free( &mod->sml_mod, 0 );
2578                         ch_free( mod );
2579                 } else {
2580                         modtail = &mod->sml_next;
2581                 }
2582         }
2583
2584         /* Strip out attrs in exattrs list */
2585         for ( modtail = modlist; *modtail ; ) {
2586                 mod = *modtail;
2587                 if ( ldap_charray_inlist( si->si_exattrs,
2588                         mod->sml_desc->ad_type->sat_cname.bv_val ) )
2589                 {
2590                         *modtail = mod->sml_next;
2591                         slap_mod_free( &mod->sml_mod, 0 );
2592                         ch_free( mod );
2593                 } else {
2594                         modtail = &mod->sml_next;
2595                 }
2596         }
2597
2598         rc = slap_mods2entry( *modlist, &e, 1, 1, &text, txtbuf, textlen);
2599         if( rc != LDAP_SUCCESS ) {
2600                 Debug( LDAP_DEBUG_ANY, "syncrepl_message_to_entry: %s mods2entry (%s)\n",
2601                         si->si_ridtxt, text, 0 );
2602         }
2603
2604 done:
2605         ber_free( ber, 0 );
2606         if ( rc != LDAP_SUCCESS ) {
2607                 if ( e ) {
2608                         entry_free( e );
2609                         e = NULL;
2610                 }
2611         }
2612         if ( entry )
2613                 *entry = e;
2614
2615         return rc;
2616 }
2617
2618 static struct berval generic_filterstr = BER_BVC("(objectclass=*)");
2619
2620 /* During a refresh, we may get an LDAP_SYNC_ADD for an already existing
2621  * entry if a previous refresh was interrupted before sending us a new
2622  * context state. We try to compare the new entry to the existing entry
2623  * and ignore the new entry if they are the same.
2624  *
2625  * Also, we may get an update where the entryDN has changed, due to
2626  * a ModDn on the provider. We detect this as well, so we can issue
2627  * the corresponding operation locally.
2628  *
2629  * In the case of a modify, we get a list of all the attributes
2630  * in the original entry. Rather than deleting the entry and re-adding it,
2631  * we issue a Modify request that deletes all the attributes and adds all
2632  * the new ones. This avoids the issue of trying to delete/add a non-leaf
2633  * entry.
2634  *
2635  * We otherwise distinguish ModDN from Modify; in the case of
2636  * a ModDN we just use the CSN, modifyTimestamp and modifiersName
2637  * operational attributes from the entry, and do a regular ModDN.
2638  */
2639 typedef struct dninfo {
2640         Entry *new_entry;
2641         struct berval dn;
2642         struct berval ndn;
2643         struct berval nnewSup;
2644         int renamed;    /* Was an existing entry renamed? */
2645         int delOldRDN;  /* Was old RDN deleted? */
2646         Modifications **modlist;        /* the modlist we received */
2647         Modifications *mods;    /* the modlist we compared */
2648         int oldNcount;          /* #values of old naming attr */
2649         AttributeDescription *oldDesc;  /* for renames */
2650         AttributeDescription *newDesc;  /* for renames */
2651 } dninfo;
2652
2653 /* return 1 if inserted, 0 otherwise */
2654 static int
2655 avl_presentlist_insert(
2656         syncinfo_t* si,
2657         struct berval *syncUUID )
2658 {
2659         struct berval *syncuuid_bv = ch_malloc( sizeof( struct berval ) + syncUUID->bv_len + 1 );
2660
2661         syncuuid_bv->bv_len = syncUUID->bv_len;
2662         syncuuid_bv->bv_val = (char *)&syncuuid_bv[1];
2663         AC_MEMCPY( syncuuid_bv->bv_val, syncUUID->bv_val, syncUUID->bv_len );
2664         syncuuid_bv->bv_val[ syncuuid_bv->bv_len ] = '\0';
2665
2666         if ( avl_insert( &si->si_presentlist, (caddr_t) syncuuid_bv,
2667                 syncuuid_cmp, avl_dup_error ) )
2668         {
2669                 ch_free( syncuuid_bv );
2670                 return 0;
2671         }
2672
2673         return 1;
2674 }
2675
2676 static int
2677 syncrepl_entry(
2678         syncinfo_t* si,
2679         Operation *op,
2680         Entry* entry,
2681         Modifications** modlist,
2682         int syncstate,
2683         struct berval* syncUUID,
2684         struct berval* syncCSN )
2685 {
2686         Backend *be = op->o_bd;
2687         slap_callback   cb = { NULL, NULL, NULL, NULL };
2688         int syncuuid_inserted = 0;
2689
2690         SlapReply       rs_search = {REP_RESULT};
2691         Filter f = {0};
2692         AttributeAssertion ava = ATTRIBUTEASSERTION_INIT;
2693         int rc = LDAP_SUCCESS;
2694
2695         struct berval pdn = BER_BVNULL;
2696         dninfo dni = {0};
2697         int     retry = 1;
2698         int     freecsn = 1;
2699
2700         Debug( LDAP_DEBUG_SYNC,
2701                 "syncrepl_entry: %s LDAP_RES_SEARCH_ENTRY(LDAP_SYNC_%s)\n",
2702                 si->si_ridtxt, syncrepl_state2str( syncstate ), 0 );
2703
2704         if (( syncstate == LDAP_SYNC_PRESENT || syncstate == LDAP_SYNC_ADD ) ) {
2705                 if ( !si->si_refreshPresent && !si->si_refreshDone ) {
2706                         syncuuid_inserted = avl_presentlist_insert( si, syncUUID );
2707                 }
2708         }
2709
2710         if ( syncstate == LDAP_SYNC_PRESENT ) {
2711                 return 0;
2712         } else if ( syncstate != LDAP_SYNC_DELETE ) {
2713                 if ( entry == NULL ) {
2714                         return 0;
2715                 }
2716         }
2717
2718         if ( syncstate != LDAP_SYNC_DELETE ) {
2719                 Attribute       *a = attr_find( entry->e_attrs, slap_schema.si_ad_entryUUID );
2720
2721                 if ( a == NULL ) {
2722                         /* add if missing */
2723                         attr_merge_one( entry, slap_schema.si_ad_entryUUID,
2724                                 &syncUUID[1], syncUUID );
2725
2726                 } else if ( !bvmatch( &a->a_nvals[0], syncUUID ) ) {
2727                         /* replace only if necessary */
2728                         if ( a->a_nvals != a->a_vals ) {
2729                                 ber_memfree( a->a_nvals[0].bv_val );
2730                                 ber_dupbv( &a->a_nvals[0], syncUUID );
2731                         }
2732                         ber_memfree( a->a_vals[0].bv_val );
2733                         ber_dupbv( &a->a_vals[0], &syncUUID[1] );
2734                 }
2735         }
2736
2737         f.f_choice = LDAP_FILTER_EQUALITY;
2738         f.f_ava = &ava;
2739         ava.aa_desc = slap_schema.si_ad_entryUUID;
2740         ava.aa_value = *syncUUID;
2741
2742         if ( syncuuid_inserted ) {
2743                 Debug( LDAP_DEBUG_SYNC, "syncrepl_entry: %s inserted UUID %s\n",
2744                         si->si_ridtxt, syncUUID[1].bv_val, 0 );
2745         }
2746         op->ors_filter = &f;
2747
2748         op->ors_filterstr.bv_len = STRLENOF( "(entryUUID=)" ) + syncUUID[1].bv_len;
2749         op->ors_filterstr.bv_val = (char *) slap_sl_malloc(
2750                 op->ors_filterstr.bv_len + 1, op->o_tmpmemctx );
2751         AC_MEMCPY( op->ors_filterstr.bv_val, "(entryUUID=", STRLENOF( "(entryUUID=" ) );
2752         AC_MEMCPY( &op->ors_filterstr.bv_val[STRLENOF( "(entryUUID=" )],
2753                 syncUUID[1].bv_val, syncUUID[1].bv_len );
2754         op->ors_filterstr.bv_val[op->ors_filterstr.bv_len - 1] = ')';
2755         op->ors_filterstr.bv_val[op->ors_filterstr.bv_len] = '\0';
2756
2757         op->o_tag = LDAP_REQ_SEARCH;
2758         op->ors_scope = LDAP_SCOPE_SUBTREE;
2759         op->ors_deref = LDAP_DEREF_NEVER;
2760
2761         /* get the entry for this UUID */
2762 #ifdef ENABLE_REWRITE
2763         if ( si->si_rewrite ) {
2764                 op->o_req_dn = si->si_suffixm;
2765                 op->o_req_ndn = si->si_suffixm;
2766         } else
2767 #endif
2768         {
2769                 op->o_req_dn = si->si_base;
2770                 op->o_req_ndn = si->si_base;
2771         }
2772
2773         op->o_time = slap_get_time();
2774         op->ors_tlimit = SLAP_NO_LIMIT;
2775         op->ors_slimit = 1;
2776         op->ors_limit = NULL;
2777
2778         op->ors_attrs = slap_anlist_all_attributes;
2779         op->ors_attrsonly = 0;
2780
2781         /* set callback function */
2782         op->o_callback = &cb;
2783         cb.sc_response = dn_callback;
2784         cb.sc_private = &dni;
2785         dni.new_entry = entry;
2786         dni.modlist = modlist;
2787
2788         rc = be->be_search( op, &rs_search );
2789         Debug( LDAP_DEBUG_SYNC,
2790                         "syncrepl_entry: %s be_search (%d)\n",
2791                         si->si_ridtxt, rc, 0 );
2792
2793         if ( !BER_BVISNULL( &op->ors_filterstr ) ) {
2794                 slap_sl_free( op->ors_filterstr.bv_val, op->o_tmpmemctx );
2795         }
2796
2797         cb.sc_response = null_callback;
2798         cb.sc_private = si;
2799
2800         if ( entry && !BER_BVISNULL( &entry->e_name ) ) {
2801                 Debug( LDAP_DEBUG_SYNC,
2802                                 "syncrepl_entry: %s %s\n",
2803                                 si->si_ridtxt, entry->e_name.bv_val, 0 );
2804         } else {
2805                 Debug( LDAP_DEBUG_SYNC,
2806                                 "syncrepl_entry: %s %s\n",
2807                                 si->si_ridtxt, dni.dn.bv_val ? dni.dn.bv_val : "(null)", 0 );
2808         }
2809
2810         assert( BER_BVISNULL( &op->o_csn ) );
2811         if ( syncCSN ) {
2812                 slap_queue_csn( op, syncCSN );
2813         }
2814
2815         slap_op_time( &op->o_time, &op->o_tincr );
2816         switch ( syncstate ) {
2817         case LDAP_SYNC_ADD:
2818         case LDAP_SYNC_MODIFY:
2819                 if ( BER_BVISNULL( &op->o_csn ))
2820                 {
2821
2822                         Attribute *a = attr_find( entry->e_attrs, slap_schema.si_ad_entryCSN );
2823                         if ( a ) {
2824                                 /* FIXME: op->o_csn is assumed to be
2825                                  * on the thread's slab; this needs
2826                                  * to be cleared ASAP.
2827                                  */
2828                                 op->o_csn = a->a_vals[0];
2829                                 freecsn = 0;
2830                         }
2831                 }
2832 retry_add:;
2833                 if ( BER_BVISNULL( &dni.dn ) ) {
2834                         SlapReply       rs_add = {REP_RESULT};
2835
2836                         op->o_req_dn = entry->e_name;
2837                         op->o_req_ndn = entry->e_nname;
2838                         op->o_tag = LDAP_REQ_ADD;
2839                         op->ora_e = entry;
2840                         op->o_bd = si->si_wbe;
2841
2842                         rc = op->o_bd->be_add( op, &rs_add );
2843                         Debug( LDAP_DEBUG_SYNC,
2844                                         "syncrepl_entry: %s be_add %s (%d)\n",
2845                                         si->si_ridtxt, op->o_req_dn.bv_val, rc );
2846                         switch ( rs_add.sr_err ) {
2847                         case LDAP_SUCCESS:
2848                                 if ( op->ora_e == entry ) {
2849                                         be_entry_release_w( op, entry );
2850                                 }
2851                                 entry = NULL;
2852                                 break;
2853
2854                         case LDAP_REFERRAL:
2855                         /* we assume that LDAP_NO_SUCH_OBJECT is returned
2856                          * only if the suffix entry is not present.
2857                          * This should not happen during Persist phase.
2858                          */
2859                         case LDAP_NO_SUCH_OBJECT:
2860                                 if ( abs(si->si_type) == LDAP_SYNC_REFRESH_AND_PERSIST &&
2861                                         si->si_refreshDone ) {
2862                                         /* Something's wrong, start over */
2863                                         ber_bvarray_free( si->si_syncCookie.ctxcsn );
2864                                         si->si_syncCookie.ctxcsn = NULL;
2865                                         ldap_pvt_thread_mutex_lock( &si->si_cookieState->cs_mutex );
2866                                         ber_bvarray_free( si->si_cookieState->cs_vals );
2867                                         ch_free( si->si_cookieState->cs_sids );
2868                                         si->si_cookieState->cs_vals = NULL;
2869                                         si->si_cookieState->cs_sids = 0;
2870                                         si->si_cookieState->cs_num = 0;
2871                                         ldap_pvt_thread_mutex_unlock( &si->si_cookieState->cs_mutex );
2872                                         return LDAP_NO_SUCH_OBJECT;
2873                                 }
2874                                 rc = syncrepl_add_glue( op, entry );
2875                                 entry = NULL;
2876                                 break;
2877
2878                         /* if an entry was added via syncrepl_add_glue(),
2879                          * it likely has no entryUUID, so the previous
2880                          * be_search() doesn't find it.  In this case,
2881                          * give syncrepl a chance to modify it. Also
2882                          * allow for entries that were recreated with the
2883                          * same DN but a different entryUUID.
2884                          */
2885                         case LDAP_ALREADY_EXISTS:
2886                                 if ( retry ) {
2887                                         Operation       op2 = *op;
2888                                         SlapReply       rs2 = { REP_RESULT };
2889                                         slap_callback   cb2 = { 0 };
2890
2891                                         op2.o_bd = be;
2892                                         op2.o_tag = LDAP_REQ_SEARCH;
2893                                         op2.o_req_dn = entry->e_name;
2894                                         op2.o_req_ndn = entry->e_nname;
2895                                         op2.ors_scope = LDAP_SCOPE_BASE;
2896                                         op2.ors_deref = LDAP_DEREF_NEVER;
2897                                         op2.ors_attrs = slap_anlist_all_attributes;
2898                                         op2.ors_attrsonly = 0;
2899                                         op2.ors_limit = NULL;
2900                                         op2.ors_slimit = 1;
2901                                         op2.ors_tlimit = SLAP_NO_LIMIT;
2902
2903                                         f.f_choice = LDAP_FILTER_PRESENT;
2904                                         f.f_desc = slap_schema.si_ad_objectClass;
2905                                         op2.ors_filter = &f;
2906                                         op2.ors_filterstr = generic_filterstr;
2907
2908                                         op2.o_callback = &cb2;
2909                                         cb2.sc_response = dn_callback;
2910                                         cb2.sc_private = &dni;
2911
2912                                         rc = be->be_search( &op2, &rs2 );
2913                                         if ( rc ) goto done;
2914
2915                                         retry = 0;
2916                                         slap_op_time( &op->o_time, &op->o_tincr );
2917                                         goto retry_add;
2918                                 }
2919                                 /* FALLTHRU */
2920
2921                         default:
2922                                 Debug( LDAP_DEBUG_ANY,
2923                                         "syncrepl_entry: %s be_add %s failed (%d)\n",
2924                                         si->si_ridtxt, op->o_req_dn.bv_val, rs_add.sr_err );
2925                                 break;
2926                         }
2927                         syncCSN = NULL;
2928                         op->o_bd = be;
2929                         goto done;
2930                 }
2931                 /* FALLTHRU */
2932                 op->o_req_dn = dni.dn;
2933                 op->o_req_ndn = dni.ndn;
2934                 if ( dni.renamed ) {
2935                         struct berval noldp, newp;
2936                         Modifications *mod, **modtail, **ml, *m2;
2937                         int i, got_replace = 0, just_rename = 0;
2938                         SlapReply rs_modify = {REP_RESULT};
2939
2940                         op->o_tag = LDAP_REQ_MODRDN;
2941                         dnRdn( &entry->e_name, &op->orr_newrdn );
2942                         dnRdn( &entry->e_nname, &op->orr_nnewrdn );
2943
2944                         if ( !BER_BVISNULL( &dni.nnewSup )) {
2945                                 dnParent( &entry->e_name, &newp );
2946                                 op->orr_newSup = &newp;
2947                                 op->orr_nnewSup = &dni.nnewSup;
2948                         } else {
2949                                 op->orr_newSup = NULL;
2950                                 op->orr_nnewSup = NULL;
2951                         }
2952                         op->orr_deleteoldrdn = dni.delOldRDN;
2953                         op->orr_modlist = NULL;
2954                         if ( ( rc = slap_modrdn2mods( op, &rs_modify ) ) ) {
2955                                 goto done;
2956                         }
2957
2958                         /* Drop the RDN-related mods from this op, because their
2959                          * equivalents were just setup by slap_modrdn2mods.
2960                          *
2961                          * If delOldRDN is TRUE then we should see a delete modop
2962                          * for oldDesc. We might see a replace instead.
2963                          *  delete with no values: therefore newDesc != oldDesc.
2964                          *   if oldNcount == 1, then Drop this op.
2965                          *  delete with 1 value: can only be the oldRDN value. Drop op.
2966                          *  delete with N values: Drop oldRDN value, keep remainder.
2967                          *  replace with 1 value: if oldNcount == 1 and
2968                          *     newDesc == oldDesc, Drop this op.
2969                          * Any other cases must be left intact.
2970                          *
2971                          * We should also see an add modop for newDesc. (But not if
2972                          * we got a replace modop due to delOldRDN.) If it has
2973                          * multiple values, we'll have to drop the new RDN value.
2974                          */
2975                         modtail = &op->orr_modlist;
2976                         if ( dni.delOldRDN ) {
2977                                 for ( ml = &dni.mods; *ml; ml = &(*ml)->sml_next ) {
2978                                         if ( (*ml)->sml_desc == dni.oldDesc ) {
2979                                                 mod = *ml;
2980                                                 if ( mod->sml_op == LDAP_MOD_REPLACE &&
2981                                                         dni.oldDesc != dni.newDesc ) {
2982                                                         /* This Replace is due to other Mods.
2983                                                          * Just let it ride.
2984                                                          */
2985                                                         continue;
2986                                                 }
2987                                                 if ( mod->sml_numvals <= 1 &&
2988                                                         dni.oldNcount == 1 &&
2989                                                         ( mod->sml_op == LDAP_MOD_DELETE ||
2990                                                           mod->sml_op == LDAP_MOD_REPLACE )) {
2991                                                         if ( mod->sml_op == LDAP_MOD_REPLACE )
2992                                                                 got_replace = 1;
2993                                                         /* Drop this op */
2994                                                         *ml = mod->sml_next;
2995                                                         mod->sml_next = NULL;
2996                                                         slap_mods_free( mod, 1 );
2997                                                         break;
2998                                                 }
2999                                                 if ( mod->sml_op != LDAP_MOD_DELETE || mod->sml_numvals == 0 )
3000                                                         continue;
3001                                                 for ( m2 = op->orr_modlist; m2; m2=m2->sml_next ) {
3002                                                         if ( m2->sml_desc == dni.oldDesc &&
3003                                                                 m2->sml_op == LDAP_MOD_DELETE ) break;
3004                                                 }
3005                                                 for ( i=0; i<mod->sml_numvals; i++ ) {
3006                                                         if ( bvmatch( &mod->sml_values[i], &m2->sml_values[0] )) {
3007                                                                 mod->sml_numvals--;
3008                                                                 ch_free( mod->sml_values[i].bv_val );
3009                                                                 mod->sml_values[i] = mod->sml_values[mod->sml_numvals];
3010                                                                 BER_BVZERO( &mod->sml_values[mod->sml_numvals] );
3011                                                                 if ( mod->sml_nvalues ) {
3012                                                                         ch_free( mod->sml_nvalues[i].bv_val );
3013                                                                         mod->sml_nvalues[i] = mod->sml_nvalues[mod->sml_numvals];
3014                                                                         BER_BVZERO( &mod->sml_nvalues[mod->sml_numvals] );
3015                                                                 }
3016                                                                 break;
3017                                                         }
3018                                                 }
3019                                                 if ( !mod->sml_numvals ) {
3020                                                         /* Drop this op */
3021                                                         *ml = mod->sml_next;
3022                                                         mod->sml_next = NULL;
3023                                                         slap_mods_free( mod, 1 );
3024                                                 }
3025                                                 break;
3026                                         }
3027                                 }
3028                         }
3029                         if ( !got_replace ) {
3030                                 for ( ml = &dni.mods; *ml; ml = &(*ml)->sml_next ) {
3031                                         if ( (*ml)->sml_desc == dni.newDesc ) {
3032                                                 mod = *ml;
3033                                                 if ( mod->sml_op != LDAP_MOD_ADD )
3034                                                         continue;
3035                                                 if ( mod->sml_numvals == 1 ) {
3036                                                         /* Drop this op */
3037                                                         *ml = mod->sml_next;
3038                                                         mod->sml_next = NULL;
3039                                                         slap_mods_free( mod, 1 );
3040                                                         break;
3041                                                 }
3042                                                 for ( m2 = op->orr_modlist; m2; m2=m2->sml_next ) {
3043                                                         if ( m2->sml_desc == dni.oldDesc &&
3044                                                                 m2->sml_op == SLAP_MOD_SOFTADD ) break;
3045                                                 }
3046                                                 for ( i=0; i<mod->sml_numvals; i++ ) {
3047                                                         if ( bvmatch( &mod->sml_values[i], &m2->sml_values[0] )) {
3048                                                                 mod->sml_numvals--;
3049                                                                 ch_free( mod->sml_values[i].bv_val );
3050                                                                 mod->sml_values[i] = mod->sml_values[mod->sml_numvals];
3051                                                                 BER_BVZERO( &mod->sml_values[mod->sml_numvals] );
3052                                                                 if ( mod->sml_nvalues ) {
3053                                                                         ch_free( mod->sml_nvalues[i].bv_val );
3054                                                                         mod->sml_nvalues[i] = mod->sml_nvalues[mod->sml_numvals];
3055                                                                         BER_BVZERO( &mod->sml_nvalues[mod->sml_numvals] );
3056                                                                 }
3057                                                                 break;
3058                                                         }
3059                                                 }
3060                                                 break;
3061                                         }
3062                                 }
3063                         }
3064
3065                         /* RDNs must be NUL-terminated for back-ldap */
3066                         noldp = op->orr_newrdn;
3067                         ber_dupbv_x( &op->orr_newrdn, &noldp, op->o_tmpmemctx );
3068                         noldp = op->orr_nnewrdn;
3069                         ber_dupbv_x( &op->orr_nnewrdn, &noldp, op->o_tmpmemctx );
3070
3071                         /* Setup opattrs too */
3072                         {
3073                                 static AttributeDescription *nullattr = NULL;
3074                                 static AttributeDescription **const opattrs[] = {
3075                                         &slap_schema.si_ad_entryCSN,
3076                                         &slap_schema.si_ad_modifiersName,
3077                                         &slap_schema.si_ad_modifyTimestamp,
3078                                         &nullattr
3079                                 };
3080                                 AttributeDescription *opattr;
3081                                 int i;
3082
3083                                 modtail = &m2;
3084                                 /* pull mod off incoming modlist */
3085                                 for ( i = 0; (opattr = *opattrs[i]) != NULL; i++ ) {
3086                                         for ( ml = &dni.mods; *ml; ml = &(*ml)->sml_next )
3087                                         {
3088                                                 if ( (*ml)->sml_desc == opattr ) {
3089                                                         mod = *ml;
3090                                                         *ml = mod->sml_next;
3091                                                         mod->sml_next = NULL;
3092                                                         *modtail = mod;
3093                                                         modtail = &mod->sml_next;
3094                                                         break;
3095                                                 }
3096                                         }
3097                                 }
3098                                 /* If there are still Modifications left, put the opattrs
3099                                  * back, and let be_modify run. Otherwise, append the opattrs
3100                                  * to the orr_modlist.
3101                                  */
3102                                 if ( dni.mods ) {
3103                                         mod = dni.mods;
3104                                         /* don't set a CSN for the rename op */
3105                                         if ( syncCSN )
3106                                                 slap_graduate_commit_csn( op );
3107                                 } else {
3108                                         mod = op->orr_modlist;
3109                                         just_rename = 1;
3110                                 }
3111                                 for ( ; mod->sml_next; mod=mod->sml_next );
3112                                 mod->sml_next = m2;
3113                         }
3114                         op->o_bd = si->si_wbe;
3115 retry_modrdn:;
3116                         rs_reinit( &rs_modify, REP_RESULT );
3117                         rc = op->o_bd->be_modrdn( op, &rs_modify );
3118
3119                         /* NOTE: noSuchObject should result because the new superior
3120                          * has not been added yet (ITS#6472) */
3121                         if ( rc == LDAP_NO_SUCH_OBJECT && op->orr_nnewSup != NULL ) {
3122                                 Operation op2 = *op;
3123                                 rc = syncrepl_add_glue_ancestors( &op2, entry );
3124                                 if ( rc == LDAP_SUCCESS ) {
3125                                         goto retry_modrdn;
3126                                 }
3127                         }
3128
3129                         op->o_tmpfree( op->orr_nnewrdn.bv_val, op->o_tmpmemctx );
3130                         op->o_tmpfree( op->orr_newrdn.bv_val, op->o_tmpmemctx );
3131
3132                         slap_mods_free( op->orr_modlist, 1 );
3133                         Debug( LDAP_DEBUG_SYNC,
3134                                         "syncrepl_entry: %s be_modrdn %s (%d)\n",
3135                                         si->si_ridtxt, op->o_req_dn.bv_val, rc );
3136                         op->o_bd = be;
3137                         /* Renamed entries may still have other mods so just fallthru */
3138                         op->o_req_dn = entry->e_name;
3139                         op->o_req_ndn = entry->e_nname;
3140                         /* Use CSN on the modify */
3141                         if ( just_rename )
3142                                 syncCSN = NULL;
3143                         else if ( syncCSN )
3144                                 slap_queue_csn( op, syncCSN );
3145                 }
3146                 if ( dni.mods ) {
3147                         SlapReply rs_modify = {REP_RESULT};
3148
3149                         op->o_tag = LDAP_REQ_MODIFY;
3150                         op->orm_modlist = dni.mods;
3151                         op->orm_no_opattrs = 1;
3152                         op->o_bd = si->si_wbe;
3153
3154                         rc = op->o_bd->be_modify( op, &rs_modify );
3155                         slap_mods_free( op->orm_modlist, 1 );
3156                         op->orm_no_opattrs = 0;
3157                         Debug( LDAP_DEBUG_SYNC,
3158                                         "syncrepl_entry: %s be_modify %s (%d)\n",
3159                                         si->si_ridtxt, op->o_req_dn.bv_val, rc );
3160                         if ( rs_modify.sr_err != LDAP_SUCCESS ) {
3161                                 Debug( LDAP_DEBUG_ANY,
3162                                         "syncrepl_entry: %s be_modify failed (%d)\n",
3163                                         si->si_ridtxt, rs_modify.sr_err, 0 );
3164                         }
3165                         syncCSN = NULL;
3166                         op->o_bd = be;
3167                 } else if ( !dni.renamed ) {
3168                         Debug( LDAP_DEBUG_SYNC,
3169                                         "syncrepl_entry: %s entry unchanged, ignored (%s)\n",
3170                                         si->si_ridtxt, op->o_req_dn.bv_val, 0 );
3171                         if ( syncCSN ) {
3172                                 slap_graduate_commit_csn( op );
3173                                 syncCSN = NULL;
3174                         }
3175                 }
3176                 goto done;
3177         case LDAP_SYNC_DELETE :
3178                 if ( !BER_BVISNULL( &dni.dn ) ) {
3179                         SlapReply       rs_delete = {REP_RESULT};
3180                         op->o_req_dn = dni.dn;
3181                         op->o_req_ndn = dni.ndn;
3182                         op->o_tag = LDAP_REQ_DELETE;
3183                         op->o_bd = si->si_wbe;
3184                         if ( !syncCSN ) {
3185                                 slap_queue_csn( op, si->si_syncCookie.ctxcsn );
3186                         }
3187                         rc = op->o_bd->be_delete( op, &rs_delete );
3188                         Debug( LDAP_DEBUG_SYNC,
3189                                         "syncrepl_entry: %s be_delete %s (%d)\n",
3190                                         si->si_ridtxt, op->o_req_dn.bv_val, rc );
3191                         if ( rc == LDAP_NO_SUCH_OBJECT )
3192                                 rc = LDAP_SUCCESS;
3193
3194                         while ( rs_delete.sr_err == LDAP_SUCCESS
3195                                 && op->o_delete_glue_parent ) {
3196                                 op->o_delete_glue_parent = 0;
3197                                 if ( !be_issuffix( be, &op->o_req_ndn ) ) {
3198                                         slap_callback cb = { NULL };
3199                                         cb.sc_response = slap_null_cb;
3200                                         dnParent( &op->o_req_ndn, &pdn );
3201                                         op->o_req_dn = pdn;
3202                                         op->o_req_ndn = pdn;
3203                                         op->o_callback = &cb;
3204                                         rs_reinit( &rs_delete, REP_RESULT );
3205                                         op->o_bd->be_delete( op, &rs_delete );
3206                                 } else {
3207                                         break;
3208                                 }
3209                         }
3210                         syncCSN = NULL;
3211                         op->o_bd = be;
3212                 }
3213                 goto done;
3214
3215         default :
3216                 Debug( LDAP_DEBUG_ANY,
3217                         "syncrepl_entry: %s unknown syncstate\n", si->si_ridtxt, 0, 0 );
3218                 goto done;
3219         }
3220
3221 done:
3222         slap_sl_free( syncUUID[1].bv_val, op->o_tmpmemctx );
3223         BER_BVZERO( &syncUUID[1] );
3224         if ( !BER_BVISNULL( &dni.ndn ) ) {
3225                 op->o_tmpfree( dni.ndn.bv_val, op->o_tmpmemctx );
3226         }
3227         if ( !BER_BVISNULL( &dni.dn ) ) {
3228                 op->o_tmpfree( dni.dn.bv_val, op->o_tmpmemctx );
3229         }
3230         if ( entry ) {
3231                 entry_free( entry );
3232         }
3233         if ( syncCSN ) {
3234                 slap_graduate_commit_csn( op );
3235         }
3236         if ( !BER_BVISNULL( &op->o_csn ) && freecsn ) {
3237                 op->o_tmpfree( op->o_csn.bv_val, op->o_tmpmemctx );
3238         }
3239         BER_BVZERO( &op->o_csn );
3240         return rc;
3241 }
3242
3243 static struct berval gcbva[] = {
3244         BER_BVC("top"),
3245         BER_BVC("glue"),
3246         BER_BVNULL
3247 };
3248
3249 #define NP_DELETE_ONE   2
3250
3251 static void
3252 syncrepl_del_nonpresent(
3253         Operation *op,
3254         syncinfo_t *si,
3255         BerVarray uuids,
3256         struct sync_cookie *sc,
3257         int m )
3258 {
3259         Backend* be = op->o_bd;
3260         slap_callback   cb = { NULL };
3261         struct nonpresent_entry *np_list, *np_prev;
3262         int rc;
3263         AttributeName   an[2];
3264
3265         struct berval pdn = BER_BVNULL;
3266         struct berval csn;
3267
3268 #ifdef ENABLE_REWRITE
3269         if ( si->si_rewrite ) {
3270                 op->o_req_dn = si->si_suffixm;
3271                 op->o_req_ndn = si->si_suffixm;
3272         } else
3273 #endif
3274         {
3275                 op->o_req_dn = si->si_base;
3276                 op->o_req_ndn = si->si_base;
3277         }
3278
3279         cb.sc_response = nonpresent_callback;
3280         cb.sc_private = si;
3281
3282         op->o_callback = &cb;
3283         op->o_tag = LDAP_REQ_SEARCH;
3284         op->ors_scope = si->si_scope;
3285         op->ors_deref = LDAP_DEREF_NEVER;
3286         op->o_time = slap_get_time();
3287         op->ors_tlimit = SLAP_NO_LIMIT;
3288
3289
3290         if ( uuids ) {
3291                 Filter uf;
3292                 AttributeAssertion eq = ATTRIBUTEASSERTION_INIT;
3293                 int i;
3294
3295                 op->ors_attrsonly = 1;
3296                 op->ors_attrs = slap_anlist_no_attrs;
3297                 op->ors_limit = NULL;
3298                 op->ors_filter = &uf;
3299
3300                 uf.f_ava = &eq;
3301                 uf.f_av_desc = slap_schema.si_ad_entryUUID;
3302                 uf.f_next = NULL;
3303                 uf.f_choice = LDAP_FILTER_EQUALITY;
3304                 si->si_refreshDelete |= NP_DELETE_ONE;
3305
3306                 for (i=0; uuids[i].bv_val; i++) {
3307                         SlapReply rs_search = {REP_RESULT};
3308
3309                         op->ors_slimit = 1;
3310                         uf.f_av_value = uuids[i];
3311                         filter2bv_x( op, op->ors_filter, &op->ors_filterstr );
3312                         rc = be->be_search( op, &rs_search );
3313                         op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
3314                 }
3315                 si->si_refreshDelete ^= NP_DELETE_ONE;
3316         } else {
3317                 Filter *cf, *of;
3318                 Filter mmf[2];
3319                 AttributeAssertion mmaa;
3320                 SlapReply rs_search = {REP_RESULT};
3321
3322                 memset( &an[0], 0, 2 * sizeof( AttributeName ) );
3323                 an[0].an_name = slap_schema.si_ad_entryUUID->ad_cname;
3324                 an[0].an_desc = slap_schema.si_ad_entryUUID;
3325                 op->ors_attrs = an;
3326                 op->ors_slimit = SLAP_NO_LIMIT;
3327                 op->ors_tlimit = SLAP_NO_LIMIT;
3328                 op->ors_limit = NULL;
3329                 op->ors_attrsonly = 0;
3330                 op->ors_filter = filter_dup( si->si_filter, op->o_tmpmemctx );
3331                 /* In multimaster, updates can continue to arrive while
3332                  * we're searching. Limit the search result to entries
3333                  * older than our newest cookie CSN.
3334                  */
3335                 if ( SLAP_MULTIMASTER( op->o_bd )) {
3336                         Filter *f;
3337                         int i;
3338
3339                         f = mmf;
3340                         f->f_choice = LDAP_FILTER_AND;
3341                         f->f_next = op->ors_filter;
3342                         f->f_and = f+1;
3343                         of = f->f_and;
3344                         f = of;
3345                         f->f_choice = LDAP_FILTER_LE;
3346                         f->f_ava = &mmaa;
3347                         f->f_av_desc = slap_schema.si_ad_entryCSN;
3348                         f->f_next = NULL;
3349                         BER_BVZERO( &f->f_av_value );
3350                         for ( i=0; i<sc->numcsns; i++ ) {
3351                                 if ( ber_bvcmp( &sc->ctxcsn[i], &f->f_av_value ) > 0 )
3352                                         f->f_av_value = sc->ctxcsn[i];
3353                         }
3354                         of = op->ors_filter;
3355                         op->ors_filter = mmf;
3356                         filter2bv_x( op, op->ors_filter, &op->ors_filterstr );
3357                 } else {
3358                         cf = NULL;
3359                         op->ors_filterstr = si->si_filterstr;
3360                 }
3361                 op->o_nocaching = 1;
3362
3363
3364                 rc = be->be_search( op, &rs_search );
3365                 if ( SLAP_MULTIMASTER( op->o_bd )) {
3366                         op->ors_filter = of;
3367                 }
3368                 if ( op->ors_filter ) filter_free_x( op, op->ors_filter, 1 );
3369                 if ( op->ors_filterstr.bv_val != si->si_filterstr.bv_val ) {
3370                         op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
3371                 }
3372
3373         }
3374
3375         op->o_nocaching = 0;
3376
3377         if ( !LDAP_LIST_EMPTY( &si->si_nonpresentlist ) ) {
3378
3379                 if ( sc->ctxcsn && !BER_BVISNULL( &sc->ctxcsn[m] ) ) {
3380                         csn = sc->ctxcsn[m];
3381                 } else {
3382                         csn = si->si_syncCookie.ctxcsn[0];
3383                 }
3384
3385                 op->o_bd = si->si_wbe;
3386                 slap_queue_csn( op, &csn );
3387
3388                 np_list = LDAP_LIST_FIRST( &si->si_nonpresentlist );
3389                 while ( np_list != NULL ) {
3390                         SlapReply rs_delete = {REP_RESULT};
3391
3392                         LDAP_LIST_REMOVE( np_list, npe_link );
3393                         np_prev = np_list;
3394                         np_list = LDAP_LIST_NEXT( np_list, npe_link );
3395                         op->o_tag = LDAP_REQ_DELETE;
3396                         op->o_callback = &cb;
3397                         cb.sc_response = null_callback;
3398                         cb.sc_private = si;
3399                         op->o_req_dn = *np_prev->npe_name;
3400                         op->o_req_ndn = *np_prev->npe_nname;
3401                         rc = op->o_bd->be_delete( op, &rs_delete );
3402                         Debug( LDAP_DEBUG_SYNC,
3403                                 "syncrepl_del_nonpresent: %s be_delete %s (%d)\n",
3404                                 si->si_ridtxt, op->o_req_dn.bv_val, rc );
3405
3406                         if ( rs_delete.sr_err == LDAP_NOT_ALLOWED_ON_NONLEAF ) {
3407                                 SlapReply rs_modify = {REP_RESULT};
3408                                 Modifications mod1, mod2;
3409                                 mod1.sml_op = LDAP_MOD_REPLACE;
3410                                 mod1.sml_flags = 0;
3411                                 mod1.sml_desc = slap_schema.si_ad_objectClass;
3412                                 mod1.sml_type = mod1.sml_desc->ad_cname;
3413                                 mod1.sml_numvals = 2;
3414                                 mod1.sml_values = &gcbva[0];
3415                                 mod1.sml_nvalues = NULL;
3416                                 mod1.sml_next = &mod2;
3417
3418                                 mod2.sml_op = LDAP_MOD_REPLACE;
3419                                 mod2.sml_flags = 0;
3420                                 mod2.sml_desc = slap_schema.si_ad_structuralObjectClass;
3421                                 mod2.sml_type = mod2.sml_desc->ad_cname;
3422                                 mod2.sml_numvals = 1;
3423                                 mod2.sml_values = &gcbva[1];
3424                                 mod2.sml_nvalues = NULL;
3425                                 mod2.sml_next = NULL;
3426
3427                                 op->o_tag = LDAP_REQ_MODIFY;
3428                                 op->orm_modlist = &mod1;
3429
3430                                 rc = op->o_bd->be_modify( op, &rs_modify );
3431                                 if ( mod2.sml_next ) slap_mods_free( mod2.sml_next, 1 );
3432                         }
3433
3434                         while ( rs_delete.sr_err == LDAP_SUCCESS &&
3435                                         op->o_delete_glue_parent ) {
3436                                 op->o_delete_glue_parent = 0;
3437                                 if ( !be_issuffix( be, &op->o_req_ndn ) ) {
3438                                         slap_callback cb = { NULL };
3439                                         cb.sc_response = slap_null_cb;
3440                                         dnParent( &op->o_req_ndn, &pdn );
3441                                         op->o_req_dn = pdn;
3442                                         op->o_req_ndn = pdn;
3443                                         op->o_callback = &cb;
3444                                         rs_reinit( &rs_delete, REP_RESULT );
3445                                         /* give it a root privil ? */
3446                                         op->o_bd->be_delete( op, &rs_delete );
3447                                 } else {
3448                                         break;
3449                                 }
3450                         }
3451
3452                         op->o_delete_glue_parent = 0;
3453
3454                         ber_bvfree( np_prev->npe_name );
3455                         ber_bvfree( np_prev->npe_nname );
3456                         ch_free( np_prev );
3457
3458                         if ( slapd_shutdown ) {
3459                                 break;
3460                         }
3461                 }
3462
3463                 slap_graduate_commit_csn( op );
3464                 op->o_bd = be;
3465
3466                 op->o_tmpfree( op->o_csn.bv_val, op->o_tmpmemctx );
3467                 BER_BVZERO( &op->o_csn );
3468         }
3469
3470         return;
3471 }
3472
3473 static int
3474 syncrepl_add_glue_ancestors(
3475         Operation* op,
3476         Entry *e )
3477 {
3478         Backend *be = op->o_bd;
3479         slap_callback cb = { NULL };
3480         Attribute       *a;
3481         int     rc = LDAP_SUCCESS;
3482         int suffrdns;
3483         int i;
3484         struct berval dn = BER_BVNULL;
3485         struct berval ndn = BER_BVNULL;
3486         Entry   *glue;
3487         struct berval   ptr, nptr;
3488         char            *comma;
3489
3490         op->o_tag = LDAP_REQ_ADD;
3491         op->o_callback = &cb;
3492         cb.sc_response = null_callback;
3493         cb.sc_private = NULL;
3494
3495         dn = e->e_name;
3496         ndn = e->e_nname;
3497
3498         /* count RDNs in suffix */
3499         if ( !BER_BVISEMPTY( &be->be_nsuffix[0] ) ) {
3500                 for ( i = 0, ptr = be->be_nsuffix[0], comma = ptr.bv_val; comma != NULL; comma = ber_bvchr( &ptr, ',' ) ) {
3501                         comma++;
3502                         ptr.bv_len -= comma - ptr.bv_val;
3503                         ptr.bv_val = comma;
3504                         i++;
3505                 }
3506                 suffrdns = i;
3507         } else {
3508                 /* suffix is "" */
3509                 suffrdns = 0;
3510         }
3511
3512         /* Start with BE suffix */
3513         ptr = dn;
3514         for ( i = 0; i < suffrdns; i++ ) {
3515                 comma = ber_bvrchr( &ptr, ',' );
3516                 if ( comma != NULL ) {
3517                         ptr.bv_len = comma - ptr.bv_val;
3518                 } else {
3519                         ptr.bv_len = 0;
3520                         break;
3521                 }
3522         }
3523
3524         if ( !BER_BVISEMPTY( &ptr ) ) {
3525                 dn.bv_len -= ptr.bv_len + ( suffrdns != 0 );
3526                 dn.bv_val += ptr.bv_len + ( suffrdns != 0 );
3527         }
3528
3529         /* the normalizedDNs are always the same length, no counting
3530          * required.
3531          */
3532         nptr = ndn;
3533         if ( ndn.bv_len > be->be_nsuffix[0].bv_len ) {
3534                 ndn.bv_val += ndn.bv_len - be->be_nsuffix[0].bv_len;
3535                 ndn.bv_len = be->be_nsuffix[0].bv_len;
3536
3537                 nptr.bv_len = ndn.bv_val - nptr.bv_val - 1;
3538
3539         } else {
3540                 nptr.bv_len = 0;
3541         }
3542
3543         while ( ndn.bv_val > e->e_nname.bv_val ) {
3544                 SlapReply       rs_add = {REP_RESULT};
3545
3546                 glue = entry_alloc();
3547                 ber_dupbv( &glue->e_name, &dn );
3548                 ber_dupbv( &glue->e_nname, &ndn );
3549
3550                 a = attr_alloc( slap_schema.si_ad_objectClass );
3551
3552                 a->a_numvals = 2;
3553                 a->a_vals = ch_calloc( 3, sizeof( struct berval ) );
3554                 ber_dupbv( &a->a_vals[0], &gcbva[0] );
3555                 ber_dupbv( &a->a_vals[1], &gcbva[1] );
3556                 ber_dupbv( &a->a_vals[2], &gcbva[2] );
3557
3558                 a->a_nvals = a->a_vals;
3559
3560                 a->a_next = glue->e_attrs;
3561                 glue->e_attrs = a;
3562
3563                 a = attr_alloc( slap_schema.si_ad_structuralObjectClass );
3564
3565                 a->a_numvals = 1;
3566                 a->a_vals = ch_calloc( 2, sizeof( struct berval ) );
3567                 ber_dupbv( &a->a_vals[0], &gcbva[1] );
3568                 ber_dupbv( &a->a_vals[1], &gcbva[2] );
3569
3570                 a->a_nvals = a->a_vals;
3571
3572                 a->a_next = glue->e_attrs;
3573                 glue->e_attrs = a;
3574
3575                 op->o_req_dn = glue->e_name;
3576                 op->o_req_ndn = glue->e_nname;
3577                 op->ora_e = glue;
3578                 rc = be->be_add ( op, &rs_add );
3579                 if ( rs_add.sr_err == LDAP_SUCCESS ) {
3580                         if ( op->ora_e == glue )
3581                                 be_entry_release_w( op, glue );
3582                 } else {
3583                 /* incl. ALREADY EXIST */
3584                         entry_free( glue );
3585                         if ( rs_add.sr_err != LDAP_ALREADY_EXISTS ) {
3586                                 entry_free( e );
3587                                 return rc;
3588                         }
3589                 }
3590
3591                 /* Move to next child */
3592                 comma = ber_bvrchr( &ptr, ',' );
3593                 if ( comma == NULL ) {
3594                         break;
3595                 }
3596                 ptr.bv_len = comma - ptr.bv_val;
3597
3598                 dn.bv_val = ++comma;
3599                 dn.bv_len = e->e_name.bv_len - (dn.bv_val - e->e_name.bv_val);
3600
3601                 comma = ber_bvrchr( &nptr, ',' );
3602                 assert( comma != NULL );
3603                 nptr.bv_len = comma - nptr.bv_val;
3604
3605                 ndn.bv_val = ++comma;
3606                 ndn.bv_len = e->e_nname.bv_len - (ndn.bv_val - e->e_nname.bv_val);
3607         }
3608
3609         return rc;
3610 }
3611
3612 int
3613 syncrepl_add_glue(
3614         Operation* op,
3615         Entry *e )
3616 {
3617         slap_callback cb = { NULL };
3618         int     rc;
3619         Backend *be = op->o_bd;
3620         SlapReply       rs_add = {REP_RESULT};
3621
3622         rc = syncrepl_add_glue_ancestors( op, e );
3623         switch ( rc ) {
3624         case LDAP_SUCCESS:
3625         case LDAP_ALREADY_EXISTS:
3626                 break;
3627
3628         default:
3629                 return rc;
3630         }
3631
3632         op->o_tag = LDAP_REQ_ADD;
3633         op->o_callback = &cb;
3634         cb.sc_response = null_callback;
3635         cb.sc_private = NULL;
3636
3637         op->o_req_dn = e->e_name;
3638         op->o_req_ndn = e->e_nname;
3639         op->ora_e = e;
3640         rc = be->be_add ( op, &rs_add );
3641         if ( rs_add.sr_err == LDAP_SUCCESS ) {
3642                 if ( op->ora_e == e )
3643                         be_entry_release_w( op, e );
3644         } else {
3645                 entry_free( e );
3646         }
3647
3648         return rc;
3649 }
3650
3651 static int
3652 syncrepl_updateCookie(
3653         syncinfo_t *si,
3654         Operation *op,
3655         struct sync_cookie *syncCookie )
3656 {
3657         Backend *be = op->o_bd;
3658         Modifications mod;
3659         struct berval first = BER_BVNULL;
3660         struct sync_cookie sc;
3661 #ifdef CHECK_CSN
3662         Syntax *syn = slap_schema.si_ad_contextCSN->ad_type->sat_syntax;
3663 #endif
3664
3665         int rc, i, j, changed = 0;
3666         ber_len_t len;
3667
3668         slap_callback cb = { NULL };
3669         SlapReply       rs_modify = {REP_RESULT};
3670
3671         mod.sml_op = LDAP_MOD_REPLACE;
3672         mod.sml_desc = slap_schema.si_ad_contextCSN;
3673         mod.sml_type = mod.sml_desc->ad_cname;
3674         mod.sml_flags = SLAP_MOD_INTERNAL;
3675         mod.sml_nvalues = NULL;
3676         mod.sml_next = NULL;
3677
3678         ldap_pvt_thread_mutex_lock( &si->si_cookieState->cs_mutex );
3679
3680 #ifdef CHECK_CSN
3681         for ( i=0; i<syncCookie->numcsns; i++ ) {
3682                 assert( !syn->ssyn_validate( syn, syncCookie->ctxcsn+i ));
3683         }
3684         for ( i=0; i<si->si_cookieState->cs_num; i++ ) {
3685                 assert( !syn->ssyn_validate( syn, si->si_cookieState->cs_vals+i ));
3686         }
3687 #endif
3688
3689         /* clone the cookieState CSNs so we can Replace the whole thing */
3690         sc.numcsns = si->si_cookieState->cs_num;
3691         if ( sc.numcsns ) {
3692                 ber_bvarray_dup_x( &sc.ctxcsn, si->si_cookieState->cs_vals, NULL );
3693                 sc.sids = ch_malloc( sc.numcsns * sizeof(int));
3694                 for ( i=0; i<sc.numcsns; i++ )
3695                         sc.sids[i] = si->si_cookieState->cs_sids[i];
3696         } else {
3697                 sc.ctxcsn = NULL;
3698                 sc.sids = NULL;
3699         }
3700
3701         /* find any CSNs in the syncCookie that are newer than the cookieState */
3702         for ( i=0; i<syncCookie->numcsns; i++ ) {
3703                 for ( j=0; j<sc.numcsns; j++ ) {
3704                         if ( syncCookie->sids[i] < sc.sids[j] )
3705                                 break;
3706                         if ( syncCookie->sids[i] != sc.sids[j] )
3707                                 continue;
3708                         len = syncCookie->ctxcsn[i].bv_len;
3709                         if ( len > sc.ctxcsn[j].bv_len )
3710                                 len = sc.ctxcsn[j].bv_len;
3711                         if ( memcmp( syncCookie->ctxcsn[i].bv_val,
3712                                 sc.ctxcsn[j].bv_val, len ) > 0 ) {
3713                                 ber_bvreplace( &sc.ctxcsn[j], &syncCookie->ctxcsn[i] );
3714                                 changed = 1;
3715                                 if ( BER_BVISNULL( &first ) ||
3716                                         memcmp( syncCookie->ctxcsn[i].bv_val, first.bv_val, first.bv_len ) > 0 ) {
3717                                         first = syncCookie->ctxcsn[i];
3718                                 }
3719                         }
3720                         break;
3721                 }
3722                 /* there was no match for this SID, it's a new CSN */
3723                 if ( j == sc.numcsns ||
3724                         syncCookie->sids[i] != sc.sids[j] ) {
3725                         slap_insert_csn_sids( &sc, j, syncCookie->sids[i],
3726                                 &syncCookie->ctxcsn[i] );
3727                         if ( BER_BVISNULL( &first ) ||
3728                                 memcmp( syncCookie->ctxcsn[i].bv_val, first.bv_val, first.bv_len ) > 0 ) {
3729                                 first = syncCookie->ctxcsn[i];
3730                         }
3731                         changed = 1;
3732                 }
3733         }
3734         /* Should never happen, ITS#5065 */
3735         if ( BER_BVISNULL( &first ) || !changed ) {
3736                 ldap_pvt_thread_mutex_unlock( &si->si_cookieState->cs_mutex );
3737                 ber_bvarray_free( sc.ctxcsn );
3738                 ch_free( sc.sids );
3739                 return 0;
3740         }
3741         op->o_bd = si->si_wbe;
3742         slap_queue_csn( op, &first );
3743
3744         op->o_tag = LDAP_REQ_MODIFY;
3745
3746         cb.sc_response = null_callback;
3747         cb.sc_private = si;
3748
3749         op->o_callback = &cb;
3750         op->o_req_dn = si->si_contextdn;
3751         op->o_req_ndn = si->si_contextdn;
3752
3753         /* update contextCSN */
3754         op->o_dont_replicate = 1;
3755
3756         mod.sml_numvals = sc.numcsns;
3757         mod.sml_values = sc.ctxcsn;
3758
3759         op->orm_modlist = &mod;
3760         op->orm_no_opattrs = 1;
3761         rc = op->o_bd->be_modify( op, &rs_modify );
3762
3763         if ( rs_modify.sr_err == LDAP_NO_SUCH_OBJECT &&
3764                 SLAP_SYNC_SUBENTRY( op->o_bd )) {
3765                 const char      *text;
3766                 char txtbuf[SLAP_TEXT_BUFLEN];
3767                 size_t textlen = sizeof txtbuf;
3768                 Entry *e = slap_create_context_csn_entry( op->o_bd, NULL );
3769                 rs_reinit( &rs_modify, REP_RESULT );
3770                 rc = slap_mods2entry( &mod, &e, 0, 1, &text, txtbuf, textlen);
3771                 op->ora_e = e;
3772                 rc = op->o_bd->be_add( op, &rs_modify );
3773                 if ( e == op->ora_e )
3774                         be_entry_release_w( op, op->ora_e );
3775         }
3776
3777         op->orm_no_opattrs = 0;
3778         op->o_dont_replicate = 0;
3779
3780         if ( rs_modify.sr_err == LDAP_SUCCESS ) {
3781                 slap_sync_cookie_free( &si->si_syncCookie, 0 );
3782                 ber_bvarray_free( si->si_cookieState->cs_vals );
3783                 ch_free( si->si_cookieState->cs_sids );
3784                 si->si_cookieState->cs_vals = sc.ctxcsn;
3785                 si->si_cookieState->cs_sids = sc.sids;
3786                 si->si_cookieState->cs_num = sc.numcsns;
3787
3788                 /* Don't just dup the provider's cookie, recreate it */
3789                 si->si_syncCookie.numcsns = si->si_cookieState->cs_num;
3790                 ber_bvarray_dup_x( &si->si_syncCookie.ctxcsn, si->si_cookieState->cs_vals, NULL );
3791                 si->si_syncCookie.sids = ch_malloc( si->si_cookieState->cs_num * sizeof(int) );
3792                 for ( i=0; i<si->si_cookieState->cs_num; i++ )
3793                         si->si_syncCookie.sids[i] = si->si_cookieState->cs_sids[i];
3794
3795                 si->si_cookieState->cs_age++;
3796                 si->si_cookieAge = si->si_cookieState->cs_age;
3797         } else {
3798                 Debug( LDAP_DEBUG_ANY,
3799                         "syncrepl_updateCookie: %s be_modify failed (%d)\n",
3800                         si->si_ridtxt, rs_modify.sr_err, 0 );
3801                 ch_free( sc.sids );
3802                 ber_bvarray_free( sc.ctxcsn );
3803         }
3804         ldap_pvt_thread_mutex_unlock( &si->si_cookieState->cs_mutex );
3805
3806         op->o_bd = be;
3807         op->o_tmpfree( op->o_csn.bv_val, op->o_tmpmemctx );
3808         BER_BVZERO( &op->o_csn );
3809         if ( mod.sml_next ) slap_mods_free( mod.sml_next, 1 );
3810
3811 #ifdef CHECK_CSN
3812         for ( i=0; i<si->si_cookieState->cs_num; i++ ) {
3813                 assert( !syn->ssyn_validate( syn, si->si_cookieState->cs_vals+i ));
3814         }
3815 #endif
3816
3817         return rc;
3818 }
3819
3820 /* Compare the attribute from the old entry to the one in the new
3821  * entry. The Modifications from the new entry will either be left
3822  * in place, or changed to an Add or Delete as needed.
3823  */
3824 static void
3825 attr_cmp( Operation *op, Attribute *old, Attribute *new,
3826         Modifications ***mret, Modifications ***mcur )
3827 {
3828         int i, j;
3829         Modifications *mod, **modtail;
3830
3831         modtail = *mret;
3832
3833         if ( old ) {
3834                 int n, o, nn, no;
3835                 struct berval **adds, **dels;
3836                 /* count old and new */
3837                 for ( o=0; old->a_vals[o].bv_val; o++ ) ;
3838                 for ( n=0; new->a_vals[n].bv_val; n++ ) ;
3839
3840                 /* there MUST be both old and new values */
3841                 assert( o != 0 );
3842                 assert( n != 0 );
3843                 j = 0;
3844
3845                 adds = op->o_tmpalloc( sizeof(struct berval *) * n, op->o_tmpmemctx );
3846                 dels = op->o_tmpalloc( sizeof(struct berval *) * o, op->o_tmpmemctx );
3847
3848                 for ( i=0; i<o; i++ ) dels[i] = &old->a_vals[i];
3849                 for ( i=0; i<n; i++ ) adds[i] = &new->a_vals[i];
3850
3851                 nn = n; no = o;
3852
3853                 for ( i=0; i<o; i++ ) {
3854                         for ( j=0; j<n; j++ ) {
3855                                 if ( !adds[j] )
3856                                         continue;
3857                                 if ( bvmatch( dels[i], adds[j] ) ) {
3858                                         no--;
3859                                         nn--;
3860                                         adds[j] = NULL;
3861                                         dels[i] = NULL;
3862                                         break;
3863                                 }
3864                         }
3865                 }
3866
3867                 /* Don't delete/add an objectClass, always use the replace op.
3868                  * Modify would fail if provider has replaced entry with a new,
3869                  * and the new explicitly includes a superior of a class that was
3870                  * only included implicitly in the old entry.  Ref ITS#5517.
3871                  *
3872                  * Also use replace op if attr has no equality matching rule.
3873                  * (ITS#5781)
3874                  */
3875                 if ( ( nn || ( no > 0 && no < o ) ) &&
3876                         ( old->a_desc == slap_schema.si_ad_objectClass ||
3877                          !old->a_desc->ad_type->sat_equality ) )
3878                 {
3879                         no = o;
3880                 }
3881
3882                 i = j;
3883                 /* all old values were deleted, just use the replace op */
3884                 if ( no == o ) {
3885                         i = j-1;
3886                 } else if ( no ) {
3887                 /* delete some values */
3888                         mod = ch_malloc( sizeof( Modifications ) );
3889                         mod->sml_op = LDAP_MOD_DELETE;
3890                         mod->sml_flags = 0;
3891                         mod->sml_desc = old->a_desc;
3892                         mod->sml_type = mod->sml_desc->ad_cname;
3893                         mod->sml_numvals = no;
3894                         mod->sml_values = ch_malloc( ( no + 1 ) * sizeof(struct berval) );
3895                         if ( old->a_vals != old->a_nvals ) {
3896                                 mod->sml_nvalues = ch_malloc( ( no + 1 ) * sizeof(struct berval) );
3897                         } else {
3898                                 mod->sml_nvalues = NULL;
3899                         }
3900                         j = 0;
3901                         for ( i = 0; i < o; i++ ) {
3902                                 if ( !dels[i] ) continue;
3903                                 ber_dupbv( &mod->sml_values[j], &old->a_vals[i] );
3904                                 if ( mod->sml_nvalues ) {
3905                                         ber_dupbv( &mod->sml_nvalues[j], &old->a_nvals[i] );
3906                                 }
3907                                 j++;
3908                         }
3909                         BER_BVZERO( &mod->sml_values[j] );
3910                         if ( mod->sml_nvalues ) {
3911                                 BER_BVZERO( &mod->sml_nvalues[j] );
3912                         }
3913                         *modtail = mod;
3914                         modtail = &mod->sml_next;
3915                         i = j;
3916                 }
3917                 op->o_tmpfree( dels, op->o_tmpmemctx );
3918                 /* some values were added */
3919                 if ( nn && no < o ) {
3920                         mod = ch_malloc( sizeof( Modifications ) );
3921                         mod->sml_op = LDAP_MOD_ADD;
3922                         mod->sml_flags = 0;
3923                         mod->sml_desc = old->a_desc;
3924                         mod->sml_type = mod->sml_desc->ad_cname;
3925                         mod->sml_numvals = nn;
3926                         mod->sml_values = ch_malloc( ( nn + 1 ) * sizeof(struct berval) );
3927                         if ( old->a_vals != old->a_nvals ) {
3928                                 mod->sml_nvalues = ch_malloc( ( nn + 1 ) * sizeof(struct berval) );
3929                         } else {
3930                                 mod->sml_nvalues = NULL;
3931                         }
3932                         j = 0;
3933                         for ( i = 0; i < n; i++ ) {
3934                                 if ( !adds[i] ) continue;
3935                                 ber_dupbv( &mod->sml_values[j], &new->a_vals[i] );
3936                                 if ( mod->sml_nvalues ) {
3937                                         ber_dupbv( &mod->sml_nvalues[j], &new->a_nvals[i] );
3938                                 }
3939                                 j++;
3940                         }
3941                         BER_BVZERO( &mod->sml_values[j] );
3942                         if ( mod->sml_nvalues ) {
3943                                 BER_BVZERO( &mod->sml_nvalues[j] );
3944                         }
3945                         *modtail = mod;
3946                         modtail = &mod->sml_next;
3947                         i = j;
3948                 }
3949                 op->o_tmpfree( adds, op->o_tmpmemctx );
3950         } else {
3951                 /* new attr, just use the new mod */
3952                 i = 0;
3953                 j = 1;
3954         }
3955         /* advance to next element */
3956         mod = **mcur;
3957         if ( mod ) {
3958                 if ( i != j ) {
3959                         **mcur = mod->sml_next;
3960                         *modtail = mod;
3961                         modtail = &mod->sml_next;
3962                 } else {
3963                         *mcur = &mod->sml_next;
3964                 }
3965         }
3966         *mret = modtail;
3967 }
3968
3969 /* Generate a set of modifications to change the old entry into the
3970  * new one. On input ml is a list of modifications equivalent to
3971  * the new entry. It will be massaged and the result will be stored
3972  * in mods.
3973  */
3974 void syncrepl_diff_entry( Operation *op, Attribute *old, Attribute *new,
3975         Modifications **mods, Modifications **ml, int is_ctx)
3976 {
3977         Modifications **modtail = mods;
3978
3979         /* We assume that attributes are saved in the same order
3980          * in the remote and local databases. So if we walk through
3981          * the attributeDescriptions one by one they should match in
3982          * lock step. If not, look for an add or delete.
3983          */
3984         while ( old && new )
3985         {
3986                 /* If we've seen this before, use its mod now */
3987                 if ( new->a_flags & SLAP_ATTR_IXADD ) {
3988                         attr_cmp( op, NULL, new, &modtail, &ml );
3989                         new = new->a_next;
3990                         continue;
3991                 }
3992                 /* Skip contextCSN */
3993                 if ( is_ctx && old->a_desc ==
3994                         slap_schema.si_ad_contextCSN ) {
3995                         old = old->a_next;
3996                         continue;
3997                 }
3998
3999                 if ( old->a_desc != new->a_desc ) {
4000                         Modifications *mod;
4001                         Attribute *tmp;
4002
4003                         /* If it's just been re-added later,
4004                          * remember that we've seen it.
4005                          */
4006                         tmp = attr_find( new, old->a_desc );
4007                         if ( tmp ) {
4008                                 tmp->a_flags |= SLAP_ATTR_IXADD;
4009                         } else {
4010                                 /* If it's a new attribute, pull it in.
4011                                  */
4012                                 tmp = attr_find( old, new->a_desc );
4013                                 if ( !tmp ) {
4014                                         attr_cmp( op, NULL, new, &modtail, &ml );
4015                                         new = new->a_next;
4016                                         continue;
4017                                 }
4018                                 /* Delete old attr */
4019                                 mod = ch_malloc( sizeof( Modifications ) );
4020                                 mod->sml_op = LDAP_MOD_DELETE;
4021                                 mod->sml_flags = 0;
4022                                 mod->sml_desc = old->a_desc;
4023                                 mod->sml_type = mod->sml_desc->ad_cname;
4024                                 mod->sml_numvals = 0;
4025                                 mod->sml_values = NULL;
4026                                 mod->sml_nvalues = NULL;
4027                                 *modtail = mod;
4028                                 modtail = &mod->sml_next;
4029                         }
4030                         old = old->a_next;
4031                         continue;
4032                 }
4033                 /* kludge - always update modifiersName so that it
4034                  * stays co-located with the other mod opattrs. But only
4035                  * if we know there are other valid mods.
4036                  */
4037                 if ( *mods && ( old->a_desc == slap_schema.si_ad_modifiersName ||
4038                         old->a_desc == slap_schema.si_ad_modifyTimestamp ))
4039                         attr_cmp( op, NULL, new, &modtail, &ml );
4040                 else
4041                         attr_cmp( op, old, new, &modtail, &ml );
4042                 new = new->a_next;
4043                 old = old->a_next;
4044         }
4045         *modtail = *ml;
4046         *ml = NULL;
4047 }
4048
4049 static int
4050 dn_callback(
4051         Operation*      op,
4052         SlapReply*      rs )
4053 {
4054         dninfo *dni = op->o_callback->sc_private;
4055
4056         if ( rs->sr_type == REP_SEARCH ) {
4057                 if ( !BER_BVISNULL( &dni->dn ) ) {
4058                         Debug( LDAP_DEBUG_ANY,
4059                                 "dn_callback : consistency error - "
4060                                 "entryUUID is not unique\n", 0, 0, 0 );
4061                 } else {
4062                         ber_dupbv_x( &dni->dn, &rs->sr_entry->e_name, op->o_tmpmemctx );
4063                         ber_dupbv_x( &dni->ndn, &rs->sr_entry->e_nname, op->o_tmpmemctx );
4064                         /* If there is a new entry, see if it differs from the old.
4065                          * We compare the non-normalized values so that cosmetic changes
4066                          * in the provider are always propagated.
4067                          */
4068                         if ( dni->new_entry ) {
4069                                 Attribute *old, *new;
4070                                 struct berval old_rdn, new_rdn;
4071                                 struct berval old_p, new_p;
4072                                 int is_ctx, new_sup = 0;
4073
4074                                 /* If old entry is not a glue entry, make sure new entry
4075                                  * is actually newer than old entry
4076                                  */
4077                                 if ( !is_entry_glue( rs->sr_entry )) {
4078                                         old = attr_find( rs->sr_entry->e_attrs,
4079                                                 slap_schema.si_ad_entryCSN );
4080                                         new = attr_find( dni->new_entry->e_attrs,
4081                                                 slap_schema.si_ad_entryCSN );
4082                                         if ( new && old ) {
4083                                                 int rc;
4084                                                 ber_len_t len = old->a_vals[0].bv_len;
4085                                                 if ( len > new->a_vals[0].bv_len )
4086                                                         len = new->a_vals[0].bv_len;
4087                                                 rc = memcmp( old->a_vals[0].bv_val,
4088                                                         new->a_vals[0].bv_val, len );
4089                                                 if ( rc > 0 ) {
4090                                                         Debug( LDAP_DEBUG_SYNC,
4091                                                                 "dn_callback : new entry is older than ours "
4092                                                                 "%s ours %s, new %s\n",
4093                                                                 rs->sr_entry->e_name.bv_val,
4094                                                                 old->a_vals[0].bv_val,
4095                                                                 new->a_vals[0].bv_val );
4096                                                         return LDAP_SUCCESS;
4097                                                 } else if ( rc == 0 ) {
4098                                                         Debug( LDAP_DEBUG_SYNC,
4099                                                                 "dn_callback : entries have identical CSN "
4100                                                                 "%s %s\n",
4101                                                                 rs->sr_entry->e_name.bv_val,
4102                                                                 old->a_vals[0].bv_val, 0 );
4103                                                         return LDAP_SUCCESS;
4104                                                 }
4105                                         }
4106                                 }
4107
4108                                 is_ctx = dn_match( &rs->sr_entry->e_nname,
4109                                         &op->o_bd->be_nsuffix[0] );
4110
4111                                 /* Did the DN change?
4112                                  * case changes in the parent are ignored,
4113                                  * we only want to know if the RDN was
4114                                  * actually changed.
4115                                  */
4116                                 dnRdn( &rs->sr_entry->e_name, &old_rdn );
4117                                 dnRdn( &dni->new_entry->e_name, &new_rdn );
4118                                 dnParent( &rs->sr_entry->e_nname, &old_p );
4119                                 dnParent( &dni->new_entry->e_nname, &new_p );
4120
4121                                 new_sup = !dn_match( &old_p, &new_p );
4122                                 if ( !dn_match( &old_rdn, &new_rdn ) || new_sup )
4123                                 {
4124                                         struct berval oldRDN, oldVal;
4125                                         AttributeDescription *ad = NULL;
4126                                         int oldpos, newpos;
4127                                         Attribute *a;
4128
4129                                         dni->renamed = 1;
4130                                         if ( new_sup )
4131                                                 dni->nnewSup = new_p;
4132
4133                                         /* See if the oldRDN was deleted */
4134                                         dnRdn( &rs->sr_entry->e_nname, &oldRDN );
4135                                         oldVal.bv_val = strchr(oldRDN.bv_val, '=') + 1;
4136                                         oldVal.bv_len = oldRDN.bv_len - ( oldVal.bv_val -
4137                                                 oldRDN.bv_val );
4138                                         oldRDN.bv_len -= oldVal.bv_len + 1;
4139                                         slap_bv2ad( &oldRDN, &ad, &rs->sr_text );
4140                                         dni->oldDesc = ad;
4141                                         for ( oldpos=0, a=rs->sr_entry->e_attrs;
4142                                                 a && a->a_desc != ad; oldpos++, a=a->a_next );
4143                                         /* a should not be NULL but apparently it happens.
4144                                          * ITS#7144
4145                                          */
4146                                         dni->oldNcount = a ? a->a_numvals : 0;
4147                                         for ( newpos=0, a=dni->new_entry->e_attrs;
4148                                                 a && a->a_desc != ad; newpos++, a=a->a_next );
4149                                         if ( !a || oldpos != newpos || attr_valfind( a,
4150                                                 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH |
4151                                                 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
4152                                                 SLAP_MR_VALUE_OF_SYNTAX,
4153                                                 &oldVal, NULL, op->o_tmpmemctx ) != LDAP_SUCCESS )
4154                                         {
4155                                                 dni->delOldRDN = 1;
4156                                         }
4157                                         /* Get the newRDN's desc */
4158                                         dnRdn( &dni->new_entry->e_nname, &oldRDN );
4159                                         oldVal.bv_val = strchr(oldRDN.bv_val, '=');
4160                                         oldRDN.bv_len = oldVal.bv_val - oldRDN.bv_val;
4161                                         ad = NULL;
4162                                         slap_bv2ad( &oldRDN, &ad, &rs->sr_text );
4163                                         dni->newDesc = ad;
4164
4165                                         /* A ModDN has happened, but in Refresh mode other
4166                                          * changes may have occurred before we picked it up.
4167                                          * So fallthru to regular Modify processing.
4168                                          */
4169                                 }
4170
4171                                 syncrepl_diff_entry( op, rs->sr_entry->e_attrs,
4172                                         dni->new_entry->e_attrs, &dni->mods, dni->modlist,
4173                                         is_ctx );
4174                         }
4175                 }
4176         } else if ( rs->sr_type == REP_RESULT ) {
4177                 if ( rs->sr_err == LDAP_SIZELIMIT_EXCEEDED ) {
4178                         Debug( LDAP_DEBUG_ANY,
4179                                 "dn_callback : consistency error - "
4180                                 "entryUUID is not unique\n", 0, 0, 0 );
4181                 }
4182         }
4183
4184         return LDAP_SUCCESS;
4185 }
4186
4187 static int
4188 nonpresent_callback(
4189         Operation*      op,
4190         SlapReply*      rs )
4191 {
4192         syncinfo_t *si = op->o_callback->sc_private;
4193         Attribute *a;
4194         int count = 0;
4195         struct berval* present_uuid = NULL;
4196         struct nonpresent_entry *np_entry;
4197
4198         if ( rs->sr_type == REP_RESULT ) {
4199                 count = avl_free( si->si_presentlist, ch_free );
4200                 si->si_presentlist = NULL;
4201
4202         } else if ( rs->sr_type == REP_SEARCH ) {
4203                 if ( !( si->si_refreshDelete & NP_DELETE_ONE ) ) {
4204                         a = attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_entryUUID );
4205
4206                         if ( a ) {
4207                                 present_uuid = avl_find( si->si_presentlist, &a->a_nvals[0],
4208                                         syncuuid_cmp );
4209                         }
4210
4211                         if ( LogTest( LDAP_DEBUG_SYNC ) ) {
4212                                 char buf[sizeof("rid=999 non")];
4213
4214                                 snprintf( buf, sizeof(buf), "%s %s", si->si_ridtxt,
4215                                         present_uuid ? "" : "non" );
4216
4217                                 Debug( LDAP_DEBUG_SYNC, "nonpresent_callback: %spresent UUID %s, dn %s\n",
4218                                         buf, a ? a->a_vals[0].bv_val : "<missing>", rs->sr_entry->e_name.bv_val );
4219                         }
4220
4221                         if ( a == NULL ) return 0;
4222                 }
4223
4224                 if ( present_uuid == NULL ) {
4225                         np_entry = (struct nonpresent_entry *)
4226                                 ch_calloc( 1, sizeof( struct nonpresent_entry ) );
4227                         np_entry->npe_name = ber_dupbv( NULL, &rs->sr_entry->e_name );
4228                         np_entry->npe_nname = ber_dupbv( NULL, &rs->sr_entry->e_nname );
4229                         LDAP_LIST_INSERT_HEAD( &si->si_nonpresentlist, np_entry, npe_link );
4230
4231                 } else {
4232                         avl_delete( &si->si_presentlist,
4233                                 &a->a_nvals[0], syncuuid_cmp );
4234                         ch_free( present_uuid );
4235                 }
4236         }
4237         return LDAP_SUCCESS;
4238 }
4239
4240 static int
4241 null_callback(
4242         Operation*      op,
4243         SlapReply*      rs )
4244 {
4245         if ( rs->sr_err != LDAP_SUCCESS &&
4246                 rs->sr_err != LDAP_REFERRAL &&
4247                 rs->sr_err != LDAP_ALREADY_EXISTS &&
4248                 rs->sr_err != LDAP_NO_SUCH_OBJECT &&
4249                 rs->sr_err != LDAP_NOT_ALLOWED_ON_NONLEAF )
4250         {
4251                 Debug( LDAP_DEBUG_ANY,
4252                         "null_callback : error code 0x%x\n",
4253                         rs->sr_err, 0, 0 );
4254         }
4255         return LDAP_SUCCESS;
4256 }
4257
4258 static struct berval *
4259 slap_uuidstr_from_normalized(
4260         struct berval* uuidstr,
4261         struct berval* normalized,
4262         void *ctx )
4263 {
4264 #if 0
4265         struct berval *new;
4266         unsigned char nibble;
4267         int i, d = 0;
4268
4269         if ( normalized == NULL ) return NULL;
4270         if ( normalized->bv_len != 16 ) return NULL;
4271
4272         if ( uuidstr ) {
4273                 new = uuidstr;
4274         } else {
4275                 new = (struct berval *)slap_sl_malloc( sizeof(struct berval), ctx );
4276                 if ( new == NULL ) {
4277                         return NULL;
4278                 }
4279         }
4280
4281         new->bv_len = 36;
4282
4283         if ( ( new->bv_val = slap_sl_malloc( new->bv_len + 1, ctx ) ) == NULL ) {
4284                 if ( new != uuidstr ) {
4285                         slap_sl_free( new, ctx );
4286                 }
4287                 return NULL;
4288         }
4289
4290         for ( i = 0; i < 16; i++ ) {
4291                 if ( i == 4 || i == 6 || i == 8 || i == 10 ) {
4292                         new->bv_val[(i<<1)+d] = '-';
4293                         d += 1;
4294                 }
4295
4296                 nibble = (normalized->bv_val[i] >> 4) & 0xF;
4297                 if ( nibble < 10 ) {
4298                         new->bv_val[(i<<1)+d] = nibble + '0';
4299                 } else {
4300                         new->bv_val[(i<<1)+d] = nibble - 10 + 'a';
4301                 }
4302
4303                 nibble = (normalized->bv_val[i]) & 0xF;
4304                 if ( nibble < 10 ) {
4305                         new->bv_val[(i<<1)+d+1] = nibble + '0';
4306                 } else {
4307                         new->bv_val[(i<<1)+d+1] = nibble - 10 + 'a';
4308                 }
4309         }
4310
4311         new->bv_val[new->bv_len] = '\0';
4312         return new;
4313 #endif
4314
4315         struct berval   *new;
4316         int             rc = 0;
4317
4318         if ( normalized == NULL ) return NULL;
4319         if ( normalized->bv_len != 16 ) return NULL;
4320
4321         if ( uuidstr ) {
4322                 new = uuidstr;
4323
4324         } else {
4325                 new = (struct berval *)slap_sl_malloc( sizeof(struct berval), ctx );
4326                 if ( new == NULL ) {
4327                         return NULL;
4328                 }
4329         }
4330
4331         new->bv_len = 36;
4332
4333         if ( ( new->bv_val = slap_sl_malloc( new->bv_len + 1, ctx ) ) == NULL ) {
4334                 rc = 1;
4335                 goto done;
4336         }
4337
4338         rc = lutil_uuidstr_from_normalized( normalized->bv_val,
4339                 normalized->bv_len, new->bv_val, new->bv_len + 1 );
4340
4341 done:;
4342         if ( rc == -1 ) {
4343                 if ( new != NULL ) {
4344                         if ( new->bv_val != NULL ) {
4345                                 slap_sl_free( new->bv_val, ctx );
4346                         }
4347
4348                         if ( new != uuidstr ) {
4349                                 slap_sl_free( new, ctx );
4350                         }
4351                 }
4352                 new = NULL;
4353
4354         } else {
4355                 new->bv_len = rc;
4356         }
4357
4358         return new;
4359 }
4360
4361 static int
4362 syncuuid_cmp( const void* v_uuid1, const void* v_uuid2 )
4363 {
4364         const struct berval *uuid1 = v_uuid1;
4365         const struct berval *uuid2 = v_uuid2;
4366         int rc = uuid1->bv_len - uuid2->bv_len;
4367         if ( rc ) return rc;
4368         return ( memcmp( uuid1->bv_val, uuid2->bv_val, uuid1->bv_len ) );
4369 }
4370
4371 void
4372 syncinfo_free( syncinfo_t *sie, int free_all )
4373 {
4374         syncinfo_t *si_next;
4375
4376         Debug( LDAP_DEBUG_TRACE, "syncinfo_free: %s\n",
4377                 sie->si_ridtxt, 0, 0 );
4378
4379         do {
4380                 si_next = sie->si_next;
4381
4382                 if ( sie->si_ld ) {
4383                         if ( sie->si_conn ) {
4384                                 connection_client_stop( sie->si_conn );
4385                                 sie->si_conn = NULL;
4386                         }
4387                         ldap_unbind_ext( sie->si_ld, NULL, NULL );
4388                 }
4389
4390                 if ( sie->si_re ) {
4391                         struct re_s             *re = sie->si_re;
4392                         sie->si_re = NULL;
4393
4394                         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
4395                         if ( ldap_pvt_runqueue_isrunning( &slapd_rq, re ) )
4396                                 ldap_pvt_runqueue_stoptask( &slapd_rq, re );
4397                         ldap_pvt_runqueue_remove( &slapd_rq, re );
4398                         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
4399                 }
4400
4401                 ldap_pvt_thread_mutex_destroy( &sie->si_mutex );
4402
4403                 bindconf_free( &sie->si_bindconf );
4404
4405                 if ( sie->si_filterstr.bv_val ) {
4406                         ch_free( sie->si_filterstr.bv_val );
4407                 }
4408                 if ( sie->si_filter ) {
4409                         filter_free( sie->si_filter );
4410                 }
4411                 if ( sie->si_logfilterstr.bv_val ) {
4412                         ch_free( sie->si_logfilterstr.bv_val );
4413                 }
4414                 if ( sie->si_base.bv_val ) {
4415                         ch_free( sie->si_base.bv_val );
4416                 }
4417                 if ( sie->si_logbase.bv_val ) {
4418                         ch_free( sie->si_logbase.bv_val );
4419                 }
4420                 if ( sie->si_be && SLAP_SYNC_SUBENTRY( sie->si_be )) {
4421                         ch_free( sie->si_contextdn.bv_val );
4422                 }
4423                 if ( sie->si_attrs ) {
4424                         int i = 0;
4425                         while ( sie->si_attrs[i] != NULL ) {
4426                                 ch_free( sie->si_attrs[i] );
4427                                 i++;
4428                         }
4429                         ch_free( sie->si_attrs );
4430                 }
4431                 if ( sie->si_exattrs ) {
4432                         int i = 0;
4433                         while ( sie->si_exattrs[i] != NULL ) {
4434                                 ch_free( sie->si_exattrs[i] );
4435                                 i++;
4436                         }
4437                         ch_free( sie->si_exattrs );
4438                 }
4439                 if ( sie->si_anlist ) {
4440                         int i = 0;
4441                         while ( sie->si_anlist[i].an_name.bv_val != NULL ) {
4442                                 ch_free( sie->si_anlist[i].an_name.bv_val );
4443                                 i++;
4444                         }
4445                         ch_free( sie->si_anlist );
4446                 }
4447                 if ( sie->si_exanlist ) {
4448                         int i = 0;
4449                         while ( sie->si_exanlist[i].an_name.bv_val != NULL ) {
4450                                 ch_free( sie->si_exanlist[i].an_name.bv_val );
4451                                 i++;
4452                         }
4453                         ch_free( sie->si_exanlist );
4454                 }
4455                 if ( sie->si_retryinterval ) {
4456                         ch_free( sie->si_retryinterval );
4457                 }
4458                 if ( sie->si_retrynum ) {
4459                         ch_free( sie->si_retrynum );
4460                 }
4461                 if ( sie->si_retrynum_init ) {
4462                         ch_free( sie->si_retrynum_init );
4463                 }
4464                 slap_sync_cookie_free( &sie->si_syncCookie, 0 );
4465                 if ( sie->si_presentlist ) {
4466                     avl_free( sie->si_presentlist, ch_free );
4467                 }
4468                 while ( !LDAP_LIST_EMPTY( &sie->si_nonpresentlist ) ) {
4469                         struct nonpresent_entry* npe;
4470                         npe = LDAP_LIST_FIRST( &sie->si_nonpresentlist );
4471                         LDAP_LIST_REMOVE( npe, npe_link );
4472                         if ( npe->npe_name ) {
4473                                 if ( npe->npe_name->bv_val ) {
4474                                         ch_free( npe->npe_name->bv_val );
4475                                 }
4476                                 ch_free( npe->npe_name );
4477                         }
4478                         if ( npe->npe_nname ) {
4479                                 if ( npe->npe_nname->bv_val ) {
4480                                         ch_free( npe->npe_nname->bv_val );
4481                                 }
4482                                 ch_free( npe->npe_nname );
4483                         }
4484                         ch_free( npe );
4485                 }
4486                 if ( sie->si_cookieState ) {
4487                         sie->si_cookieState->cs_ref--;
4488                         if ( !sie->si_cookieState->cs_ref ) {
4489                                 ch_free( sie->si_cookieState->cs_sids );
4490                                 ber_bvarray_free( sie->si_cookieState->cs_vals );
4491                                 ldap_pvt_thread_mutex_destroy( &sie->si_cookieState->cs_mutex );
4492                                 ch_free( sie->si_cookieState->cs_psids );
4493                                 ber_bvarray_free( sie->si_cookieState->cs_pvals );
4494                                 ldap_pvt_thread_mutex_destroy( &sie->si_cookieState->cs_pmutex );
4495                                 ch_free( sie->si_cookieState );
4496                         }
4497                 }
4498 #ifdef ENABLE_REWRITE
4499                 if ( sie->si_rewrite )
4500                         rewrite_info_delete( &sie->si_rewrite );
4501                 if ( sie->si_suffixm.bv_val )
4502                         ch_free( sie->si_suffixm.bv_val );
4503 #endif
4504                 ch_free( sie );
4505                 sie = si_next;
4506         } while ( free_all && si_next );
4507 }
4508
4509 #ifdef ENABLE_REWRITE
4510 static int
4511 config_suffixm( ConfigArgs *c, syncinfo_t *si )
4512 {
4513         char *argvEngine[] = { "rewriteEngine", "on", NULL };
4514         char *argvContext[] = { "rewriteContext", SUFFIXM_CTX, NULL };
4515         char *argvRule[] = { "rewriteRule", NULL, NULL, ":", NULL };
4516         char *vnc, *rnc;
4517         int rc;
4518
4519         if ( si->si_rewrite )
4520                 rewrite_info_delete( &si->si_rewrite );
4521         si->si_rewrite = rewrite_info_init( REWRITE_MODE_USE_DEFAULT );
4522
4523         rc = rewrite_parse( si->si_rewrite, c->fname, c->lineno, 2, argvEngine );
4524         if ( rc != LDAP_SUCCESS )
4525                 return rc;
4526
4527         rc = rewrite_parse( si->si_rewrite, c->fname, c->lineno, 2, argvContext );
4528         if ( rc != LDAP_SUCCESS )
4529                 return rc;
4530
4531         vnc = ch_malloc( si->si_base.bv_len + 6 );
4532         strcpy( vnc, "(.*)" );
4533         lutil_strcopy( lutil_strcopy( vnc+4, si->si_base.bv_val ), "$" );
4534         argvRule[1] = vnc;
4535
4536         rnc = ch_malloc( si->si_suffixm.bv_len + 3 );
4537         strcpy( rnc, "%1" );
4538         strcpy( rnc+2, si->si_suffixm.bv_val );
4539         argvRule[2] = rnc;
4540
4541         rc = rewrite_parse( si->si_rewrite, c->fname, c->lineno, 4, argvRule );
4542         ch_free( vnc );
4543         ch_free( rnc );
4544         return rc;
4545 }
4546 #endif
4547
4548 /* NOTE: used & documented in slapd.conf(5) */
4549 #define IDSTR                   "rid"
4550 #define PROVIDERSTR             "provider"
4551 #define SCHEMASTR               "schemachecking"
4552 #define FILTERSTR               "filter"
4553 #define SEARCHBASESTR           "searchbase"
4554 #define SCOPESTR                "scope"
4555 #define ATTRSONLYSTR            "attrsonly"
4556 #define ATTRSSTR                "attrs"
4557 #define TYPESTR                 "type"
4558 #define INTERVALSTR             "interval"
4559 #define RETRYSTR                "retry"
4560 #define SLIMITSTR               "sizelimit"
4561 #define TLIMITSTR               "timelimit"
4562 #define SYNCDATASTR             "syncdata"
4563 #define LOGBASESTR              "logbase"
4564 #define LOGFILTERSTR    "logfilter"
4565 #define SUFFIXMSTR              "suffixmassage"
4566 #define STRICT_REFRESH  "strictrefresh"
4567
4568 /* FIXME: undocumented */
4569 #define EXATTRSSTR              "exattrs"
4570 #define MANAGEDSAITSTR          "manageDSAit"
4571
4572 /* mandatory */
4573 enum {
4574         GOT_RID                 = 0x00000001U,
4575         GOT_PROVIDER            = 0x00000002U,
4576         GOT_SCHEMACHECKING      = 0x00000004U,
4577         GOT_FILTER              = 0x00000008U,
4578         GOT_SEARCHBASE          = 0x00000010U,
4579         GOT_SCOPE               = 0x00000020U,
4580         GOT_ATTRSONLY           = 0x00000040U,
4581         GOT_ATTRS               = 0x00000080U,
4582         GOT_TYPE                = 0x00000100U,
4583         GOT_INTERVAL            = 0x00000200U,
4584         GOT_RETRY               = 0x00000400U,
4585         GOT_SLIMIT              = 0x00000800U,
4586         GOT_TLIMIT              = 0x00001000U,
4587         GOT_SYNCDATA            = 0x00002000U,
4588         GOT_LOGBASE             = 0x00004000U,
4589         GOT_LOGFILTER           = 0x00008000U,
4590         GOT_EXATTRS             = 0x00010000U,
4591         GOT_MANAGEDSAIT         = 0x00020000U,
4592         GOT_BINDCONF            = 0x00040000U,
4593         GOT_SUFFIXM             = 0x00080000U,
4594
4595 /* check */
4596         GOT_REQUIRED            = (GOT_RID|GOT_PROVIDER|GOT_SEARCHBASE)
4597 };
4598
4599 static slap_verbmasks datamodes[] = {
4600         { BER_BVC("default"), SYNCDATA_DEFAULT },
4601         { BER_BVC("accesslog"), SYNCDATA_ACCESSLOG },
4602         { BER_BVC("changelog"), SYNCDATA_CHANGELOG },
4603         { BER_BVNULL, 0 }
4604 };
4605
4606 static int
4607 parse_syncrepl_retry(
4608         ConfigArgs      *c,
4609         char            *arg,
4610         syncinfo_t      *si )
4611 {
4612         char **retry_list;
4613         int j, k, n;
4614         int use_default = 0;
4615
4616         char *val = arg + STRLENOF( RETRYSTR "=" );
4617         if ( strcasecmp( val, "undefined" ) == 0 ) {
4618                 val = "3600 +";
4619                 use_default = 1;
4620         }
4621
4622         retry_list = (char **) ch_calloc( 1, sizeof( char * ) );
4623         retry_list[0] = NULL;
4624
4625         slap_str2clist( &retry_list, val, " ,\t" );
4626
4627         for ( k = 0; retry_list && retry_list[k]; k++ ) ;
4628         n = k / 2;
4629         if ( k % 2 ) {
4630                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4631                         "Error: incomplete syncrepl retry list" );
4632                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4633                 for ( k = 0; retry_list && retry_list[k]; k++ ) {
4634                         ch_free( retry_list[k] );
4635                 }
4636                 ch_free( retry_list );
4637                 return 1;
4638         }
4639         si->si_retryinterval = (time_t *) ch_calloc( n + 1, sizeof( time_t ) );
4640         si->si_retrynum = (int *) ch_calloc( n + 1, sizeof( int ) );
4641         si->si_retrynum_init = (int *) ch_calloc( n + 1, sizeof( int ) );
4642         for ( j = 0; j < n; j++ ) {
4643                 unsigned long   t;
4644                 if ( lutil_atoul( &t, retry_list[j*2] ) != 0 ) {
4645                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
4646                                 "Error: invalid retry interval \"%s\" (#%d)",
4647                                 retry_list[j*2], j );
4648                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4649                         /* do some cleanup */
4650                         return 1;
4651                 }
4652                 si->si_retryinterval[j] = (time_t)t;
4653                 if ( *retry_list[j*2+1] == '+' ) {
4654                         si->si_retrynum_init[j] = RETRYNUM_FOREVER;
4655                         si->si_retrynum[j] = RETRYNUM_FOREVER;
4656                         j++;
4657                         break;
4658                 } else {
4659                         if ( lutil_atoi( &si->si_retrynum_init[j], retry_list[j*2+1] ) != 0
4660                                         || si->si_retrynum_init[j] <= 0 )
4661                         {
4662                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4663                                         "Error: invalid initial retry number \"%s\" (#%d)",
4664                                         retry_list[j*2+1], j );
4665                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4666                                 /* do some cleanup */
4667                                 return 1;
4668                         }
4669                         if ( lutil_atoi( &si->si_retrynum[j], retry_list[j*2+1] ) != 0
4670                                         || si->si_retrynum[j] <= 0 )
4671                         {
4672                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4673                                         "Error: invalid retry number \"%s\" (#%d)",
4674                                         retry_list[j*2+1], j );
4675                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4676                                 /* do some cleanup */
4677                                 return 1;
4678                         }
4679                 }
4680         }
4681         if ( j < 1 || si->si_retrynum_init[j-1] != RETRYNUM_FOREVER ) {
4682                 Debug( LDAP_DEBUG_CONFIG,
4683                         "%s: syncrepl will eventually stop retrying; the \"retry\" parameter should end with a '+'.\n",
4684                         c->log, 0, 0 );
4685         }
4686
4687         si->si_retrynum_init[j] = RETRYNUM_TAIL;
4688         si->si_retrynum[j] = RETRYNUM_TAIL;
4689         si->si_retryinterval[j] = 0;
4690
4691         for ( k = 0; retry_list && retry_list[k]; k++ ) {
4692                 ch_free( retry_list[k] );
4693         }
4694         ch_free( retry_list );
4695         if ( !use_default ) {
4696                 si->si_got |= GOT_RETRY;
4697         }
4698
4699         return 0;
4700 }
4701
4702 static int
4703 parse_syncrepl_line(
4704         ConfigArgs      *c,
4705         syncinfo_t      *si )
4706 {
4707         int     i;
4708         char    *val;
4709
4710         for ( i = 1; i < c->argc; i++ ) {
4711                 if ( !strncasecmp( c->argv[ i ], IDSTR "=",
4712                                         STRLENOF( IDSTR "=" ) ) )
4713                 {
4714                         int tmp;
4715                         /* '\0' string terminator accounts for '=' */
4716                         val = c->argv[ i ] + STRLENOF( IDSTR "=" );
4717                         if ( lutil_atoi( &tmp, val ) != 0 ) {
4718                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4719                                         "Error: parse_syncrepl_line: "
4720                                         "unable to parse syncrepl id \"%s\"", val );
4721                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4722                                 return -1;
4723                         }
4724                         if ( tmp > SLAP_SYNC_RID_MAX || tmp < 0 ) {
4725                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4726                                         "Error: parse_syncrepl_line: "
4727                                         "syncrepl id %d is out of range [0..%d]", tmp, SLAP_SYNC_RID_MAX );
4728                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4729                                 return -1;
4730                         }
4731                         si->si_rid = tmp;
4732                         sprintf( si->si_ridtxt, IDSTR "=%03d", si->si_rid );
4733                         si->si_got |= GOT_RID;
4734                 } else if ( !strncasecmp( c->argv[ i ], PROVIDERSTR "=",
4735                                         STRLENOF( PROVIDERSTR "=" ) ) )
4736                 {
4737                         val = c->argv[ i ] + STRLENOF( PROVIDERSTR "=" );
4738                         ber_str2bv( val, 0, 1, &si->si_bindconf.sb_uri );
4739 #ifdef HAVE_TLS
4740                         if ( ldap_is_ldaps_url( val ))
4741                                 si->si_bindconf.sb_tls_do_init = 1;
4742 #endif
4743                         si->si_got |= GOT_PROVIDER;
4744                 } else if ( !strncasecmp( c->argv[ i ], SCHEMASTR "=",
4745                                         STRLENOF( SCHEMASTR "=" ) ) )
4746                 {
4747                         val = c->argv[ i ] + STRLENOF( SCHEMASTR "=" );
4748                         if ( !strncasecmp( val, "on", STRLENOF( "on" ) ) ) {
4749                                 si->si_schemachecking = 1;
4750                         } else if ( !strncasecmp( val, "off", STRLENOF( "off" ) ) ) {
4751                                 si->si_schemachecking = 0;
4752                         } else {
4753                                 si->si_schemachecking = 1;
4754                         }
4755                         si->si_got |= GOT_SCHEMACHECKING;
4756                 } else if ( !strncasecmp( c->argv[ i ], FILTERSTR "=",
4757                                         STRLENOF( FILTERSTR "=" ) ) )
4758                 {
4759                         val = c->argv[ i ] + STRLENOF( FILTERSTR "=" );
4760                         if ( si->si_filterstr.bv_val )
4761                                 ch_free( si->si_filterstr.bv_val );
4762                         ber_str2bv( val, 0, 1, &si->si_filterstr );
4763                         si->si_got |= GOT_FILTER;
4764                 } else if ( !strncasecmp( c->argv[ i ], LOGFILTERSTR "=",
4765                                         STRLENOF( LOGFILTERSTR "=" ) ) )
4766                 {
4767                         val = c->argv[ i ] + STRLENOF( LOGFILTERSTR "=" );
4768                         if ( si->si_logfilterstr.bv_val )
4769                                 ch_free( si->si_logfilterstr.bv_val );
4770                         ber_str2bv( val, 0, 1, &si->si_logfilterstr );
4771                         si->si_got |= GOT_LOGFILTER;
4772                 } else if ( !strncasecmp( c->argv[ i ], SEARCHBASESTR "=",
4773                                         STRLENOF( SEARCHBASESTR "=" ) ) )
4774                 {
4775                         struct berval   bv;
4776                         int             rc;
4777
4778                         val = c->argv[ i ] + STRLENOF( SEARCHBASESTR "=" );
4779                         if ( si->si_base.bv_val ) {
4780                                 ch_free( si->si_base.bv_val );
4781                         }
4782                         ber_str2bv( val, 0, 0, &bv );
4783                         rc = dnNormalize( 0, NULL, NULL, &bv, &si->si_base, NULL );
4784                         if ( rc != LDAP_SUCCESS ) {
4785                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4786                                         "Invalid base DN \"%s\": %d (%s)",
4787                                         val, rc, ldap_err2string( rc ) );
4788                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4789                                 return -1;
4790                         }
4791                         si->si_got |= GOT_SEARCHBASE;
4792 #ifdef ENABLE_REWRITE
4793                 } else if ( !strncasecmp( c->argv[ i ], SUFFIXMSTR "=",
4794                                         STRLENOF( SUFFIXMSTR "=" ) ) )
4795                 {
4796                         struct berval   bv;
4797                         int             rc;
4798
4799                         val = c->argv[ i ] + STRLENOF( SUFFIXMSTR "=" );
4800                         if ( si->si_suffixm.bv_val ) {
4801                                 ch_free( si->si_suffixm.bv_val );
4802                         }
4803                         ber_str2bv( val, 0, 0, &bv );
4804                         rc = dnNormalize( 0, NULL, NULL, &bv, &si->si_suffixm, NULL );
4805                         if ( rc != LDAP_SUCCESS ) {
4806                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4807                                         "Invalid massage DN \"%s\": %d (%s)",
4808                                         val, rc, ldap_err2string( rc ) );
4809                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4810                                 return -1;
4811                         }
4812                         if ( !be_issubordinate( c->be, &si->si_suffixm )) {
4813                                 ch_free( si->si_suffixm.bv_val );
4814                                 BER_BVZERO( &si->si_suffixm );
4815                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4816                                         "Massage DN \"%s\" is not within the database naming context",
4817                                         val );
4818                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4819                                 return -1;
4820                         }
4821                         si->si_got |= GOT_SUFFIXM;
4822 #endif
4823                 } else if ( !strncasecmp( c->argv[ i ], LOGBASESTR "=",
4824                                         STRLENOF( LOGBASESTR "=" ) ) )
4825                 {
4826                         struct berval   bv;
4827                         int             rc;
4828
4829                         val = c->argv[ i ] + STRLENOF( LOGBASESTR "=" );
4830                         if ( si->si_logbase.bv_val ) {
4831                                 ch_free( si->si_logbase.bv_val );
4832                         }
4833                         ber_str2bv( val, 0, 0, &bv );
4834                         rc = dnNormalize( 0, NULL, NULL, &bv, &si->si_logbase, NULL );
4835                         if ( rc != LDAP_SUCCESS ) {
4836                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4837                                         "Invalid logbase DN \"%s\": %d (%s)",
4838                                         val, rc, ldap_err2string( rc ) );
4839                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4840                                 return -1;
4841                         }
4842                         si->si_got |= GOT_LOGBASE;
4843                 } else if ( !strncasecmp( c->argv[ i ], SCOPESTR "=",
4844                                         STRLENOF( SCOPESTR "=" ) ) )
4845                 {
4846                         int j;
4847                         val = c->argv[ i ] + STRLENOF( SCOPESTR "=" );
4848                         j = ldap_pvt_str2scope( val );
4849                         if ( j < 0 ) {
4850                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4851                                         "Error: parse_syncrepl_line: "
4852                                         "unknown scope \"%s\"", val);
4853                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4854                                 return -1;
4855                         }
4856                         si->si_scope = j;
4857                         si->si_got |= GOT_SCOPE;
4858                 } else if ( !strncasecmp( c->argv[ i ], ATTRSONLYSTR,
4859                                         STRLENOF( ATTRSONLYSTR ) ) )
4860                 {
4861                         si->si_attrsonly = 1;
4862                         si->si_got |= GOT_ATTRSONLY;
4863                 } else if ( !strncasecmp( c->argv[ i ], ATTRSSTR "=",
4864                                         STRLENOF( ATTRSSTR "=" ) ) )
4865                 {
4866                         val = c->argv[ i ] + STRLENOF( ATTRSSTR "=" );
4867                         if ( !strncasecmp( val, ":include:", STRLENOF(":include:") ) ) {
4868                                 char *attr_fname;
4869                                 attr_fname = ch_strdup( val + STRLENOF(":include:") );
4870                                 si->si_anlist = file2anlist( si->si_anlist, attr_fname, " ,\t" );
4871                                 if ( si->si_anlist == NULL ) {
4872                                         ch_free( attr_fname );
4873                                         return -1;
4874                                 }
4875                                 si->si_anfile = attr_fname;
4876                         } else {
4877                                 char *str, *s, *next;
4878                                 const char *delimstr = " ,\t";
4879                                 str = ch_strdup( val );
4880                                 for ( s = ldap_pvt_strtok( str, delimstr, &next );
4881                                                 s != NULL;
4882                                                 s = ldap_pvt_strtok( NULL, delimstr, &next ) )
4883                                 {
4884                                         if ( strlen(s) == 1 && *s == '*' ) {
4885                                                 si->si_allattrs = 1;
4886                                                 val[ s - str ] = delimstr[0];
4887                                         }
4888                                         if ( strlen(s) == 1 && *s == '+' ) {
4889                                                 si->si_allopattrs = 1;
4890                                                 val [ s - str ] = delimstr[0];
4891                                         }
4892                                 }
4893                                 ch_free( str );
4894                                 si->si_anlist = str2anlist( si->si_anlist, val, " ,\t" );
4895                                 if ( si->si_anlist == NULL ) {
4896                                         return -1;
4897                                 }
4898                         }
4899                         si->si_got |= GOT_ATTRS;
4900                 } else if ( !strncasecmp( c->argv[ i ], EXATTRSSTR "=",
4901                                         STRLENOF( EXATTRSSTR "=" ) ) )
4902                 {
4903                         val = c->argv[ i ] + STRLENOF( EXATTRSSTR "=" );
4904                         if ( !strncasecmp( val, ":include:", STRLENOF(":include:") ) ) {
4905                                 char *attr_fname;
4906                                 attr_fname = ch_strdup( val + STRLENOF(":include:") );
4907                                 si->si_exanlist = file2anlist(
4908                                         si->si_exanlist, attr_fname, " ,\t" );
4909                                 if ( si->si_exanlist == NULL ) {
4910                                         ch_free( attr_fname );
4911                                         return -1;
4912                                 }
4913                                 ch_free( attr_fname );
4914                         } else {
4915                                 si->si_exanlist = str2anlist( si->si_exanlist, val, " ,\t" );
4916                                 if ( si->si_exanlist == NULL ) {
4917                                         return -1;
4918                                 }
4919                         }
4920                         si->si_got |= GOT_EXATTRS;
4921                 } else if ( !strncasecmp( c->argv[ i ], TYPESTR "=",
4922                                         STRLENOF( TYPESTR "=" ) ) )
4923                 {
4924                         val = c->argv[ i ] + STRLENOF( TYPESTR "=" );
4925                         if ( !strncasecmp( val, "refreshOnly",
4926                                                 STRLENOF("refreshOnly") ) )
4927                         {
4928                                 si->si_type = si->si_ctype = LDAP_SYNC_REFRESH_ONLY;
4929                         } else if ( !strncasecmp( val, "refreshAndPersist",
4930                                                 STRLENOF("refreshAndPersist") ) )
4931                         {
4932                                 si->si_type = si->si_ctype = LDAP_SYNC_REFRESH_AND_PERSIST;
4933                                 si->si_interval = 60;
4934                         } else {
4935                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
4936                                         "Error: parse_syncrepl_line: "
4937                                         "unknown sync type \"%s\"", val);
4938                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4939                                 return -1;
4940                         }
4941                         si->si_got |= GOT_TYPE;
4942                 } else if ( !strncasecmp( c->argv[ i ], INTERVALSTR "=",
4943                                         STRLENOF( INTERVALSTR "=" ) ) )
4944                 {
4945                         val = c->argv[ i ] + STRLENOF( INTERVALSTR "=" );
4946                         if ( si->si_type == LDAP_SYNC_REFRESH_AND_PERSIST ) {
4947                                 si->si_interval = 0;
4948                         } else if ( strchr( val, ':' ) != NULL ) {
4949                                 char *next, *ptr = val;
4950                                 int dd, hh, mm, ss;
4951
4952                                 dd = strtol( ptr, &next, 10 );
4953                                 if ( next == ptr || next[0] != ':' || dd < 0 ) {
4954                                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
4955                                                 "Error: parse_syncrepl_line: "
4956                                                 "invalid interval \"%s\", unable to parse days", val );
4957                                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4958                                         return -1;
4959                                 }
4960                                 ptr = next + 1;
4961                                 hh = strtol( ptr, &next, 10 );
4962                                 if ( next == ptr || next[0] != ':' || hh < 0 || hh > 24 ) {
4963                                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
4964                                                 "Error: parse_syncrepl_line: "
4965                                                 "invalid interval \"%s\", unable to parse hours", val );
4966                                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4967                                         return -1;
4968                                 }
4969                                 ptr = next + 1;
4970                                 mm = strtol( ptr, &next, 10 );
4971                                 if ( next == ptr || next[0] != ':' || mm < 0 || mm > 60 ) {
4972                                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
4973                                                 "Error: parse_syncrepl_line: "
4974                                                 "invalid interval \"%s\", unable to parse minutes", val );
4975                                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4976                                         return -1;
4977                                 }
4978                                 ptr = next + 1;
4979                                 ss = strtol( ptr, &next, 10 );
4980                                 if ( next == ptr || next[0] != '\0' || ss < 0 || ss > 60 ) {
4981                                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
4982                                                 "Error: parse_syncrepl_line: "
4983                                                 "invalid interval \"%s\", unable to parse seconds", val );
4984                                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4985                                         return -1;
4986                                 }
4987                                 si->si_interval = (( dd * 24 + hh ) * 60 + mm ) * 60 + ss;
4988                         } else {
4989                                 unsigned long   t;
4990
4991                                 if ( lutil_parse_time( val, &t ) != 0 ) {
4992                                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
4993                                                 "Error: parse_syncrepl_line: "
4994                                                 "invalid interval \"%s\"", val );
4995                                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
4996                                         return -1;
4997                                 }
4998                                 si->si_interval = (time_t)t;
4999                         }
5000                         if ( si->si_interval < 0 ) {
5001                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
5002                                         "Error: parse_syncrepl_line: "
5003                                         "invalid interval \"%ld\"",
5004                                         (long) si->si_interval);
5005                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
5006                                 return -1;
5007                         }
5008                         si->si_got |= GOT_INTERVAL;
5009                 } else if ( !strncasecmp( c->argv[ i ], RETRYSTR "=",
5010                                         STRLENOF( RETRYSTR "=" ) ) )
5011                 {
5012                         if ( parse_syncrepl_retry( c, c->argv[ i ], si ) ) {
5013                                 return 1;
5014                         }
5015                 } else if ( !strncasecmp( c->argv[ i ], MANAGEDSAITSTR "=",
5016                                         STRLENOF( MANAGEDSAITSTR "=" ) ) )
5017                 {
5018                         val = c->argv[ i ] + STRLENOF( MANAGEDSAITSTR "=" );
5019                         if ( lutil_atoi( &si->si_manageDSAit, val ) != 0
5020                                 || si->si_manageDSAit < 0 || si->si_manageDSAit > 1 )
5021                         {
5022                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
5023                                         "invalid manageDSAit value \"%s\".\n",
5024                                         val );
5025                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
5026                                 return 1;
5027                         }
5028                         si->si_got |= GOT_MANAGEDSAIT;
5029                 } else if ( !strncasecmp( c->argv[ i ], SLIMITSTR "=",
5030                                         STRLENOF( SLIMITSTR "=") ) )
5031                 {
5032                         val = c->argv[ i ] + STRLENOF( SLIMITSTR "=" );
5033                         if ( strcasecmp( val, "unlimited" ) == 0 ) {
5034                                 si->si_slimit = 0;
5035
5036                         } else if ( lutil_atoi( &si->si_slimit, val ) != 0 || si->si_slimit < 0 ) {
5037                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
5038                                         "invalid size limit value \"%s\".\n",
5039                                         val );
5040                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
5041                                 return 1;
5042                         }
5043                         si->si_got |= GOT_SLIMIT;
5044                 } else if ( !strncasecmp( c->argv[ i ], TLIMITSTR "=",
5045                                         STRLENOF( TLIMITSTR "=" ) ) )
5046                 {
5047                         val = c->argv[ i ] + STRLENOF( TLIMITSTR "=" );
5048                         if ( strcasecmp( val, "unlimited" ) == 0 ) {
5049                                 si->si_tlimit = 0;
5050
5051                         } else if ( lutil_atoi( &si->si_tlimit, val ) != 0 || si->si_tlimit < 0 ) {
5052                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
5053                                         "invalid time limit value \"%s\".\n",
5054                                         val );
5055                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
5056                                 return 1;
5057                         }
5058                         si->si_got |= GOT_TLIMIT;
5059                 } else if ( !strncasecmp( c->argv[ i ], SYNCDATASTR "=",
5060                                         STRLENOF( SYNCDATASTR "=" ) ) )
5061                 {
5062                         val = c->argv[ i ] + STRLENOF( SYNCDATASTR "=" );
5063                         si->si_syncdata = verb_to_mask( val, datamodes );
5064                         si->si_got |= GOT_SYNCDATA;
5065                 } else if ( !strncasecmp( c->argv[ i ], STRICT_REFRESH,
5066                                         STRLENOF( STRICT_REFRESH ) ) )
5067                 {
5068                         si->si_strict_refresh = 1;
5069                 } else if ( bindconf_parse( c->argv[i], &si->si_bindconf ) ) {
5070                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
5071                                 "Error: parse_syncrepl_line: "
5072                                 "unable to parse \"%s\"\n", c->argv[ i ] );
5073                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
5074                         return -1;
5075                 }
5076                 si->si_got |= GOT_BINDCONF;
5077         }
5078
5079         if ( ( si->si_got & GOT_REQUIRED ) != GOT_REQUIRED ) {
5080                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
5081                         "Error: Malformed \"syncrepl\" line in slapd config file, missing%s%s%s",
5082                         si->si_got & GOT_RID ? "" : " "IDSTR,
5083                         si->si_got & GOT_PROVIDER ? "" : " "PROVIDERSTR,
5084                         si->si_got & GOT_SEARCHBASE ? "" : " "SEARCHBASESTR );
5085                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
5086                 return -1;
5087         }
5088
5089         if ( !be_issubordinate( c->be, &si->si_base ) && !( si->si_got & GOT_SUFFIXM )) {
5090                 ch_free( si->si_base.bv_val );
5091                 BER_BVZERO( &si->si_base );
5092                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
5093                         "Base DN \"%s\" is not within the database naming context",
5094                         val );
5095                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
5096                 return -1;
5097         }
5098
5099 #ifdef ENABLE_REWRITE
5100         if ( si->si_got & GOT_SUFFIXM ) {
5101                 if (config_suffixm( c, si )) {
5102                         ch_free( si->si_suffixm.bv_val );
5103                         BER_BVZERO( &si->si_suffixm );
5104                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
5105                                 "Error configuring rewrite engine" );
5106                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
5107                         return -1;
5108                 }
5109         }
5110 #endif
5111
5112         if ( !( si->si_got & GOT_RETRY ) ) {
5113                 Debug( LDAP_DEBUG_ANY, "syncrepl %s " SEARCHBASESTR "=\"%s\": no retry defined, using default\n",
5114                         si->si_ridtxt, c->be->be_suffix ? c->be->be_suffix[ 0 ].bv_val : "(null)", 0 );
5115                 if ( si->si_retryinterval == NULL ) {
5116                         if ( parse_syncrepl_retry( c, "retry=undefined", si ) ) {
5117                                 return 1;
5118                         }
5119                 }
5120         }
5121
5122         si->si_filter = str2filter( si->si_filterstr.bv_val );
5123         if ( si->si_filter == NULL ) {
5124                 Debug( LDAP_DEBUG_ANY, "syncrepl %s " SEARCHBASESTR "=\"%s\": unable to parse filter=\"%s\"\n",
5125                         si->si_ridtxt, c->be->be_suffix ? c->be->be_suffix[ 0 ].bv_val : "(null)", si->si_filterstr.bv_val );
5126                 return 1;
5127         }
5128
5129         return 0;
5130 }
5131
5132 static int
5133 add_syncrepl(
5134         ConfigArgs *c )
5135 {
5136         syncinfo_t *si;
5137         int     rc = 0;
5138
5139         if ( !( c->be->be_search && c->be->be_add && c->be->be_modify && c->be->be_delete ) ) {
5140                 snprintf( c->cr_msg, sizeof(c->cr_msg), "database %s does not support "
5141                         "operations required for syncrepl", c->be->be_type );
5142                 Debug( LDAP_DEBUG_ANY, "%s: %s\n", c->log, c->cr_msg, 0 );
5143                 return 1;
5144         }
5145         if ( BER_BVISEMPTY( &c->be->be_rootdn ) ) {
5146                 strcpy( c->cr_msg, "rootDN must be defined before syncrepl may be used" );
5147                 Debug( LDAP_DEBUG_ANY, "%s: %s\n", c->log, c->cr_msg, 0 );
5148                 return 1;
5149         }
5150         si = (syncinfo_t *) ch_calloc( 1, sizeof( syncinfo_t ) );
5151
5152         if ( si == NULL ) {
5153                 Debug( LDAP_DEBUG_ANY, "out of memory in add_syncrepl\n", 0, 0, 0 );
5154                 return 1;
5155         }
5156
5157         si->si_bindconf.sb_tls = SB_TLS_OFF;
5158         si->si_bindconf.sb_method = LDAP_AUTH_SIMPLE;
5159         si->si_schemachecking = 0;
5160         ber_str2bv( "(objectclass=*)", STRLENOF("(objectclass=*)"), 1,
5161                 &si->si_filterstr );
5162         si->si_base.bv_val = NULL;
5163         si->si_scope = LDAP_SCOPE_SUBTREE;
5164         si->si_attrsonly = 0;
5165         si->si_anlist = (AttributeName *) ch_calloc( 1, sizeof( AttributeName ) );
5166         si->si_exanlist = (AttributeName *) ch_calloc( 1, sizeof( AttributeName ) );
5167         si->si_attrs = NULL;
5168         si->si_allattrs = 0;
5169         si->si_allopattrs = 0;
5170         si->si_exattrs = NULL;
5171         si->si_type = si->si_ctype = LDAP_SYNC_REFRESH_ONLY;
5172         si->si_interval = 86400;
5173         si->si_retryinterval = NULL;
5174         si->si_retrynum_init = NULL;
5175         si->si_retrynum = NULL;
5176         si->si_manageDSAit = 0;
5177         si->si_tlimit = 0;
5178         si->si_slimit = 0;
5179
5180         si->si_presentlist = NULL;
5181         LDAP_LIST_INIT( &si->si_nonpresentlist );
5182         ldap_pvt_thread_mutex_init( &si->si_mutex );
5183
5184         rc = parse_syncrepl_line( c, si );
5185
5186         if ( rc == 0 ) {
5187                 LDAPURLDesc *lud;
5188
5189                 /* Must be LDAPv3 because we need controls */
5190                 switch ( si->si_bindconf.sb_version ) {
5191                 case 0:
5192                         /* not explicitly set */
5193                         si->si_bindconf.sb_version = LDAP_VERSION3;
5194                         break;
5195                 case 3:
5196                         /* explicitly set */
5197                         break;
5198                 default:
5199                         Debug( LDAP_DEBUG_ANY,
5200                                 "version %d incompatible with syncrepl\n",
5201                                 si->si_bindconf.sb_version, 0, 0 );
5202                         syncinfo_free( si, 0 );
5203                         return 1;
5204                 }
5205
5206                 if ( ldap_url_parse( si->si_bindconf.sb_uri.bv_val, &lud )) {
5207                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
5208                                 "<%s> invalid URL", c->argv[0] );
5209                         Debug( LDAP_DEBUG_ANY, "%s: %s %s\n",
5210                                 c->log, c->cr_msg, si->si_bindconf.sb_uri.bv_val );
5211                         return 1;
5212                 }
5213
5214                 si->si_be = c->be;
5215                 if ( slapMode & SLAP_SERVER_MODE ) {
5216                         int isMe = 0;
5217                         /* check if consumer points to current server and database.
5218                          * If so, ignore this configuration.
5219                          */
5220                         if ( !SLAP_DBHIDDEN( c->be ) ) {
5221                                 int i;
5222                                 /* if searchbase doesn't match current DB suffix,
5223                                  * assume it's different
5224                                  */
5225                                 for ( i=0; !BER_BVISNULL( &c->be->be_nsuffix[i] ); i++ ) {
5226                                         if ( bvmatch( &si->si_base, &c->be->be_nsuffix[i] )) {
5227                                                 isMe = 1;
5228                                                 break;
5229                                         }
5230                                 }
5231                                 /* if searchbase matches, see if URLs match */
5232                                 if ( isMe && config_check_my_url( si->si_bindconf.sb_uri.bv_val,
5233                                                 lud ) == NULL )
5234                                         isMe = 0;
5235                         }
5236
5237                         if ( !isMe ) {
5238                                 init_syncrepl( si );
5239                                 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
5240                                 si->si_re = ldap_pvt_runqueue_insert( &slapd_rq,
5241                                         si->si_interval, do_syncrepl, si, "do_syncrepl",
5242                                         si->si_ridtxt );
5243                                 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
5244                                 if ( si->si_re )
5245                                         rc = config_sync_shadow( c ) ? -1 : 0;
5246                                 else
5247                                         rc = -1;
5248                         }
5249                 } else {
5250                         /* mirrormode still needs to see this flag in tool mode */
5251                         rc = config_sync_shadow( c ) ? -1 : 0;
5252                 }
5253                 ldap_free_urldesc( lud );
5254         }
5255
5256 #ifdef HAVE_TLS
5257         /* Use main slapd defaults */
5258         bindconf_tls_defaults( &si->si_bindconf );
5259 #endif
5260         if ( rc < 0 ) {
5261                 Debug( LDAP_DEBUG_ANY, "failed to add syncinfo\n", 0, 0, 0 );
5262                 syncinfo_free( si, 0 );
5263                 return 1;
5264         } else {
5265                 Debug( LDAP_DEBUG_CONFIG,
5266                         "Config: ** successfully added syncrepl %s \"%s\"\n",
5267                         si->si_ridtxt,
5268                         BER_BVISNULL( &si->si_bindconf.sb_uri ) ?
5269                         "(null)" : si->si_bindconf.sb_uri.bv_val, 0 );
5270                 if ( c->be->be_syncinfo ) {
5271                         syncinfo_t *sip;
5272
5273                         si->si_cookieState = c->be->be_syncinfo->si_cookieState;
5274
5275                         /* add new syncrepl to end of list (same order as when deleting) */
5276                         for ( sip = c->be->be_syncinfo; sip->si_next; sip = sip->si_next );
5277                         sip->si_next = si;
5278                 } else {
5279                         si->si_cookieState = ch_calloc( 1, sizeof( cookie_state ));
5280                         ldap_pvt_thread_mutex_init( &si->si_cookieState->cs_mutex );
5281                         ldap_pvt_thread_mutex_init( &si->si_cookieState->cs_pmutex );
5282
5283                         c->be->be_syncinfo = si;
5284                 }
5285                 si->si_cookieState->cs_ref++;
5286
5287                 si->si_next = NULL;
5288
5289                 return 0;
5290         }
5291 }
5292
5293 static void
5294 syncrepl_unparse( syncinfo_t *si, struct berval *bv )
5295 {
5296         struct berval bc, uri, bs;
5297         char buf[BUFSIZ*2], *ptr;
5298         ber_len_t len;
5299         int i;
5300 #       define WHATSLEFT        ((ber_len_t) (&buf[sizeof( buf )] - ptr))
5301
5302         BER_BVZERO( bv );
5303
5304         /* temporarily inhibit bindconf from printing URI */
5305         uri = si->si_bindconf.sb_uri;
5306         BER_BVZERO( &si->si_bindconf.sb_uri );
5307         si->si_bindconf.sb_version = 0;
5308         bindconf_unparse( &si->si_bindconf, &bc );
5309         si->si_bindconf.sb_uri = uri;
5310         si->si_bindconf.sb_version = LDAP_VERSION3;
5311
5312         ptr = buf;
5313         assert( si->si_rid >= 0 && si->si_rid <= SLAP_SYNC_RID_MAX );
5314         len = snprintf( ptr, WHATSLEFT, IDSTR "=%03d " PROVIDERSTR "=%s",
5315                 si->si_rid, si->si_bindconf.sb_uri.bv_val );
5316         if ( len >= sizeof( buf ) ) return;
5317         ptr += len;
5318         if ( !BER_BVISNULL( &bc ) ) {
5319                 if ( WHATSLEFT <= bc.bv_len ) {
5320                         free( bc.bv_val );
5321                         return;
5322                 }
5323                 ptr = lutil_strcopy( ptr, bc.bv_val );
5324                 free( bc.bv_val );
5325         }
5326         if ( !BER_BVISEMPTY( &si->si_filterstr ) ) {
5327                 if ( WHATSLEFT <= STRLENOF( " " FILTERSTR "=\"" "\"" ) + si->si_filterstr.bv_len ) return;
5328                 ptr = lutil_strcopy( ptr, " " FILTERSTR "=\"" );
5329                 ptr = lutil_strcopy( ptr, si->si_filterstr.bv_val );
5330                 *ptr++ = '"';
5331         }
5332         if ( !BER_BVISNULL( &si->si_base ) ) {
5333                 if ( WHATSLEFT <= STRLENOF( " " SEARCHBASESTR "=\"" "\"" ) + si->si_base.bv_len ) return;
5334                 ptr = lutil_strcopy( ptr, " " SEARCHBASESTR "=\"" );
5335                 ptr = lutil_strcopy( ptr, si->si_base.bv_val );
5336                 *ptr++ = '"';
5337         }
5338 #ifdef ENABLE_REWRITE
5339         if ( !BER_BVISNULL( &si->si_suffixm ) ) {
5340                 if ( WHATSLEFT <= STRLENOF( " " SUFFIXMSTR "=\"" "\"" ) + si->si_suffixm.bv_len ) return;
5341                 ptr = lutil_strcopy( ptr, " " SUFFIXMSTR "=\"" );
5342                 ptr = lutil_strcopy( ptr, si->si_suffixm.bv_val );
5343                 *ptr++ = '"';
5344         }
5345 #endif
5346         if ( !BER_BVISEMPTY( &si->si_logfilterstr ) ) {
5347                 if ( WHATSLEFT <= STRLENOF( " " LOGFILTERSTR "=\"" "\"" ) + si->si_logfilterstr.bv_len ) return;
5348                 ptr = lutil_strcopy( ptr, " " LOGFILTERSTR "=\"" );
5349                 ptr = lutil_strcopy( ptr, si->si_logfilterstr.bv_val );
5350                 *ptr++ = '"';
5351         }
5352         if ( !BER_BVISNULL( &si->si_logbase ) ) {
5353                 if ( WHATSLEFT <= STRLENOF( " " LOGBASESTR "=\"" "\"" ) + si->si_logbase.bv_len ) return;
5354                 ptr = lutil_strcopy( ptr, " " LOGBASESTR "=\"" );
5355                 ptr = lutil_strcopy( ptr, si->si_logbase.bv_val );
5356                 *ptr++ = '"';
5357         }
5358         if ( ldap_pvt_scope2bv( si->si_scope, &bs ) == LDAP_SUCCESS ) {
5359                 if ( WHATSLEFT <= STRLENOF( " " SCOPESTR "=" ) + bs.bv_len ) return;
5360                 ptr = lutil_strcopy( ptr, " " SCOPESTR "=" );
5361                 ptr = lutil_strcopy( ptr, bs.bv_val );
5362         }
5363         if ( si->si_attrsonly ) {
5364                 if ( WHATSLEFT <= STRLENOF( " " ATTRSONLYSTR "=\"" "\"" ) ) return;
5365                 ptr = lutil_strcopy( ptr, " " ATTRSONLYSTR );
5366         }
5367         if ( si->si_anfile ) {
5368                 if ( WHATSLEFT <= STRLENOF( " " ATTRSSTR "=\":include:" "\"" ) + strlen( si->si_anfile ) ) return;
5369                 ptr = lutil_strcopy( ptr, " " ATTRSSTR "=:include:\"" );
5370                 ptr = lutil_strcopy( ptr, si->si_anfile );
5371                 *ptr++ = '"';
5372         } else if ( si->si_allattrs || si->si_allopattrs ||
5373                 ( si->si_anlist && !BER_BVISNULL(&si->si_anlist[0].an_name) ) )
5374         {
5375                 char *old;
5376
5377                 if ( WHATSLEFT <= STRLENOF( " " ATTRSONLYSTR "=\"" "\"" ) ) return;
5378                 ptr = lutil_strcopy( ptr, " " ATTRSSTR "=\"" );
5379                 old = ptr;
5380                 ptr = anlist_unparse( si->si_anlist, ptr, WHATSLEFT );
5381                 if ( ptr == NULL ) return;
5382                 if ( si->si_allattrs ) {
5383                         if ( WHATSLEFT <= STRLENOF( ",*\"" ) ) return;
5384                         if ( old != ptr ) *ptr++ = ',';
5385                         *ptr++ = '*';
5386                 }
5387                 if ( si->si_allopattrs ) {
5388                         if ( WHATSLEFT <= STRLENOF( ",+\"" ) ) return;
5389                         if ( old != ptr ) *ptr++ = ',';
5390                         *ptr++ = '+';
5391                 }
5392                 *ptr++ = '"';
5393         }
5394         if ( si->si_exanlist && !BER_BVISNULL(&si->si_exanlist[0].an_name) ) {
5395                 if ( WHATSLEFT <= STRLENOF( " " EXATTRSSTR "=" ) ) return;
5396                 ptr = lutil_strcopy( ptr, " " EXATTRSSTR "=" );
5397                 ptr = anlist_unparse( si->si_exanlist, ptr, WHATSLEFT );
5398                 if ( ptr == NULL ) return;
5399         }
5400         if ( WHATSLEFT <= STRLENOF( " " SCHEMASTR "=" ) + STRLENOF( "off" ) ) return;
5401         ptr = lutil_strcopy( ptr, " " SCHEMASTR "=" );
5402         ptr = lutil_strcopy( ptr, si->si_schemachecking ? "on" : "off" );
5403
5404         if ( WHATSLEFT <= STRLENOF( " " TYPESTR "=" ) + STRLENOF( "refreshAndPersist" ) ) return;
5405         ptr = lutil_strcopy( ptr, " " TYPESTR "=" );
5406         ptr = lutil_strcopy( ptr, si->si_type == LDAP_SYNC_REFRESH_AND_PERSIST ?
5407                 "refreshAndPersist" : "refreshOnly" );
5408
5409         if ( si->si_type == LDAP_SYNC_REFRESH_ONLY ) {
5410                 int dd, hh, mm, ss;
5411
5412                 dd = si->si_interval;
5413                 ss = dd % 60;
5414                 dd /= 60;
5415                 mm = dd % 60;
5416                 dd /= 60;
5417                 hh = dd % 24;
5418                 dd /= 24;
5419                 len = snprintf( ptr, WHATSLEFT, " %s=%02d:%02d:%02d:%02d",
5420                         INTERVALSTR, dd, hh, mm, ss );
5421                 if ( len >= WHATSLEFT ) return;
5422                 ptr += len;
5423         }
5424
5425         if ( si->si_got & GOT_RETRY ) {
5426                 const char *space = "";
5427                 if ( WHATSLEFT <= STRLENOF( " " RETRYSTR "=\"" "\"" ) ) return;
5428                 ptr = lutil_strcopy( ptr, " " RETRYSTR "=\"" );
5429                 for (i=0; si->si_retryinterval[i]; i++) {
5430                         len = snprintf( ptr, WHATSLEFT, "%s%ld ", space,
5431                                 (long) si->si_retryinterval[i] );
5432                         space = " ";
5433                         if ( WHATSLEFT - 1 <= len ) return;
5434                         ptr += len;
5435                         if ( si->si_retrynum_init[i] == RETRYNUM_FOREVER )
5436                                 *ptr++ = '+';
5437                         else {
5438                                 len = snprintf( ptr, WHATSLEFT, "%d", si->si_retrynum_init[i] );
5439                                 if ( WHATSLEFT <= len ) return;
5440                                 ptr += len;
5441                         }
5442                 }
5443                 if ( WHATSLEFT <= STRLENOF( "\"" ) ) return;
5444                 *ptr++ = '"';
5445         } else {
5446                 ptr = lutil_strcopy( ptr, " " RETRYSTR "=undefined" );
5447         }
5448
5449         if ( si->si_slimit ) {
5450                 len = snprintf( ptr, WHATSLEFT, " " SLIMITSTR "=%d", si->si_slimit );
5451                 if ( WHATSLEFT <= len ) return;
5452                 ptr += len;
5453         }
5454
5455         if ( si->si_tlimit ) {
5456                 len = snprintf( ptr, WHATSLEFT, " " TLIMITSTR "=%d", si->si_tlimit );
5457                 if ( WHATSLEFT <= len ) return;
5458                 ptr += len;
5459         }
5460
5461         if ( si->si_syncdata ) {
5462                 if ( enum_to_verb( datamodes, si->si_syncdata, &bc ) >= 0 ) {
5463                         if ( WHATSLEFT <= STRLENOF( " " SYNCDATASTR "=" ) + bc.bv_len ) return;
5464                         ptr = lutil_strcopy( ptr, " " SYNCDATASTR "=" );
5465                         ptr = lutil_strcopy( ptr, bc.bv_val );
5466                 }
5467         }
5468         bc.bv_len = ptr - buf;
5469         bc.bv_val = buf;
5470         ber_dupbv( bv, &bc );
5471 }
5472
5473 int
5474 syncrepl_config( ConfigArgs *c )
5475 {
5476         if (c->op == SLAP_CONFIG_EMIT) {
5477                 if ( c->be->be_syncinfo ) {
5478                         struct berval bv;
5479                         syncinfo_t *si;
5480
5481                         for ( si = c->be->be_syncinfo; si; si=si->si_next ) {
5482                                 syncrepl_unparse( si, &bv );
5483                                 ber_bvarray_add( &c->rvalue_vals, &bv );
5484                         }
5485                         return 0;
5486                 }
5487                 return 1;
5488         } else if ( c->op == LDAP_MOD_DELETE ) {
5489                 int isrunning = 0;
5490                 if ( c->be->be_syncinfo ) {
5491                         syncinfo_t *si, **sip;
5492                         int i;
5493
5494                         for ( sip = &c->be->be_syncinfo, i=0; *sip; i++ ) {
5495                                 si = *sip;
5496                                 if ( c->valx == -1 || i == c->valx ) {
5497                                         *sip = si->si_next;
5498                                         si->si_ctype = -1;
5499                                         si->si_next = NULL;
5500                                         /* If the task is currently active, we have to leave
5501                                          * it running. It will exit on its own. This will only
5502                                          * happen when running on the cn=config DB.
5503                                          */
5504                                         if ( si->si_re ) {
5505                                                 if ( ldap_pvt_thread_mutex_trylock( &si->si_mutex )) {
5506                                                         isrunning = 1;
5507                                                 } else {
5508                                                         /* There is no active thread, but we must still
5509                                                          * ensure that no thread is (or will be) queued
5510                                                          * while we removes the task.
5511                                                          */
5512                                                         struct re_s *re = si->si_re;
5513                                                         si->si_re = NULL;
5514
5515                                                         if ( si->si_conn ) {
5516                                                                 connection_client_stop( si->si_conn );
5517                                                                 si->si_conn = NULL;
5518                                                         }
5519
5520                                                         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
5521                                                         if ( ldap_pvt_runqueue_isrunning( &slapd_rq, re ) ) {
5522                                                                 ldap_pvt_runqueue_stoptask( &slapd_rq, re );
5523                                                                 isrunning = 1;
5524                                                         }
5525                                                         if ( ldap_pvt_thread_pool_retract( &connection_pool,
5526                                                                         re->routine, re ) > 0 )
5527                                                                 isrunning = 0;
5528
5529                                                         ldap_pvt_runqueue_remove( &slapd_rq, re );
5530                                                         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
5531
5532                                                         ldap_pvt_thread_mutex_unlock( &si->si_mutex );
5533                                                 }
5534                                         }
5535                                         if ( !isrunning ) {
5536                                                 syncinfo_free( si, 0 );
5537                                         }
5538                                         if ( i == c->valx )
5539                                                 break;
5540                                 } else {
5541                                         sip = &si->si_next;
5542                                 }
5543                         }
5544                 }
5545                 if ( !c->be->be_syncinfo ) {
5546                         SLAP_DBFLAGS( c->be ) &= ~SLAP_DBFLAG_SHADOW_MASK;
5547                 }
5548                 return 0;
5549         }
5550         if ( SLAP_SLURP_SHADOW( c->be ) ) {
5551                 Debug(LDAP_DEBUG_ANY, "%s: "
5552                         "syncrepl: database already shadowed.\n",
5553                         c->log, 0, 0);
5554                 return(1);
5555         } else {
5556                 return add_syncrepl( c );
5557         }
5558 }