git.sur5r.net Git - openldap/blob - servers/slapd/back-monitor/database.c

   1 /* database.c - deals with database subsystem */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2001-2009 The OpenLDAP Foundation.
   6  * Portions Copyright 2001-2003 Pierangelo Masarati.
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted only as authorized by the OpenLDAP
  11  * Public License.
  12  *
  13  * A copy of this license is available in file LICENSE in the
  14  * top-level directory of the distribution or, alternatively, at
  15  * <http://www.OpenLDAP.org/license.html>.
  16  */
  17 /* ACKNOWLEDGEMENTS:
  18  * This work was initially developed by Pierangelo Masarati for inclusion
  19  * in OpenLDAP Software.
  20  */
  21
  22 #include "portable.h"
  23
  24 #include <stdio.h>
  25 #include <ac/string.h>
  26 #include <ac/unistd.h>
  27
  28 #include "slap.h"
  29 #include "back-monitor.h"
  30
  31 #if defined(LDAP_SLAPI)
  32 #include "slapi.h"
  33 static int monitor_back_add_plugin( monitor_info_t *mi, Backend *be, Entry *e );
  34 #endif /* defined(LDAP_SLAPI) */
  35
  36 static int
  37 monitor_subsys_database_modify(
  38         Operation       *op,
  39         SlapReply       *rs,
  40         Entry           *e );
  41
  42 static struct restricted_ops_t {
  43         struct berval   op;
  44         unsigned int    tag;
  45 } restricted_ops[] = {
  46         { BER_BVC( "add" ),                     SLAP_RESTRICT_OP_ADD },
  47         { BER_BVC( "bind" ),                    SLAP_RESTRICT_OP_BIND },
  48         { BER_BVC( "compare" ),                 SLAP_RESTRICT_OP_COMPARE },
  49         { BER_BVC( "delete" ),                  SLAP_RESTRICT_OP_DELETE },
  50         { BER_BVC( "extended" ),                SLAP_RESTRICT_OP_EXTENDED },
  51         { BER_BVC( "modify" ),                  SLAP_RESTRICT_OP_MODIFY },
  52         { BER_BVC( "rename" ),                  SLAP_RESTRICT_OP_RENAME },
  53         { BER_BVC( "search" ),                  SLAP_RESTRICT_OP_SEARCH },
  54         { BER_BVNULL,                           0 }
  55 }, restricted_exops[] = {
  56         { BER_BVC( LDAP_EXOP_START_TLS ),       SLAP_RESTRICT_EXOP_START_TLS },
  57         { BER_BVC( LDAP_EXOP_MODIFY_PASSWD ),   SLAP_RESTRICT_EXOP_MODIFY_PASSWD },
  58         { BER_BVC( LDAP_EXOP_WHO_AM_I ),        SLAP_RESTRICT_EXOP_WHOAMI },
  59         { BER_BVC( LDAP_EXOP_CANCEL ),  SLAP_RESTRICT_EXOP_CANCEL },
  60         { BER_BVNULL,                           0 }
  61 };
  62
  63 static int
  64 init_readOnly( monitor_info_t *mi, Entry *e, slap_mask_t restrictops )
  65 {
  66         struct berval   *tf = ( ( restrictops & SLAP_RESTRICT_OP_MASK ) == SLAP_RESTRICT_OP_WRITES ) ?
  67                 (struct berval *)&slap_true_bv : (struct berval *)&slap_false_bv;
  68
  69         return attr_merge_one( e, mi->mi_ad_readOnly, tf, NULL );
  70 }
  71
  72 static int
  73 init_restrictedOperation( monitor_info_t *mi, Entry *e, slap_mask_t restrictops )
  74 {
  75         int     i, rc;
  76
  77         for ( i = 0; restricted_ops[ i ].op.bv_val; i++ ) {
  78                 if ( restrictops & restricted_ops[ i ].tag ) {
  79                         rc = attr_merge_one( e, mi->mi_ad_restrictedOperation,
  80                                         &restricted_ops[ i ].op,
  81                                         &restricted_ops[ i ].op );
  82                         if ( rc ) {
  83                                 return rc;
  84                         }
  85                 }
  86         }
  87
  88         for ( i = 0; restricted_exops[ i ].op.bv_val; i++ ) {
  89                 if ( restrictops & restricted_exops[ i ].tag ) {
  90                         rc = attr_merge_one( e, mi->mi_ad_restrictedOperation,
  91                                         &restricted_exops[ i ].op,
  92                                         &restricted_exops[ i ].op );
  93                         if ( rc ) {
  94                                 return rc;
  95                         }
  96                 }
  97         }
  98
  99         return LDAP_SUCCESS;
 100 }
 101
 102 static int
 103 monitor_subsys_database_init_one(
 104         monitor_info_t          *mi,
 105         BackendDB               *be,
 106         monitor_subsys_t        *ms,
 107         monitor_subsys_t        *ms_backend,
 108         monitor_subsys_t        *ms_overlay,
 109         struct berval           *rdn,
 110         Entry                   *e_database,
 111         Entry                   ***epp )
 112 {
 113         char                    buf[ BACKMONITOR_BUFSIZE ];
 114         int                     j;
 115         slap_overinfo           *oi = NULL;
 116         BackendInfo             *bi, *bi2;
 117         Entry                   *e;
 118         monitor_entry_t         *mp;
 119         char                    *rdnval = strchr( rdn->bv_val, '=' ) + 1;
 120         struct berval           bv;
 121
 122         bi = be->bd_info;
 123
 124         if ( overlay_is_over( be ) ) {
 125                 oi = (slap_overinfo *)be->bd_info->bi_private;
 126                 bi = oi->oi_orig;
 127         }
 128
 129         e = monitor_entry_stub( &ms->mss_dn, &ms->mss_ndn, rdn,
 130                 mi->mi_oc_monitoredObject, mi, NULL, NULL );
 131
 132         if ( e == NULL ) {
 133                 Debug( LDAP_DEBUG_ANY,
 134                         "monitor_subsys_database_init: "
 135                         "unable to create entry \"%s,%s\"\n",
 136                         rdn->bv_val, ms->mss_dn.bv_val, 0 );
 137                 return( -1 );
 138         }
 139
 140         ber_str2bv( bi->bi_type, 0, 0, &bv );
 141         attr_merge_normalize_one( e, mi->mi_ad_monitoredInfo, &bv, NULL );
 142         attr_merge_one( e, mi->mi_ad_monitorIsShadow,
 143                 SLAP_SHADOW( be ) ? (struct berval *)&slap_true_bv :
 144                         (struct berval *)&slap_false_bv, NULL );
 145
 146         if ( SLAP_MONITOR( be ) ) {
 147                 attr_merge( e, slap_schema.si_ad_monitorContext,
 148                                 be->be_suffix, be->be_nsuffix );
 149                 attr_merge( e_database, slap_schema.si_ad_monitorContext,
 150                                 be->be_suffix, be->be_nsuffix );
 151
 152         } else {
 153                 if ( be->be_suffix == NULL ) {
 154                         Debug( LDAP_DEBUG_ANY,
 155                                 "monitor_subsys_database_init: "
 156                                 "missing suffix for %s\n",
 157                                 rdnval, 0, 0 );
 158                 } else {
 159                         attr_merge( e, slap_schema.si_ad_namingContexts,
 160                                 be->be_suffix, NULL );
 161                         attr_merge( e_database, slap_schema.si_ad_namingContexts,
 162                                 be->be_suffix, NULL );
 163                 }
 164
 165                 if ( SLAP_GLUE_SUBORDINATE( be ) ) {
 166                         BackendDB *sup_be = select_backend( &be->be_nsuffix[ 0 ], 1 );
 167                         if ( sup_be == NULL ) {
 168                                 Debug( LDAP_DEBUG_ANY,
 169                                         "monitor_subsys_database_init: "
 170                                         "unable to get superior for %s\n",
 171                                         be->be_suffix[ 0 ].bv_val, 0, 0 );
 172
 173                         } else {
 174                                 attr_merge( e, mi->mi_ad_monitorSuperiorDN,
 175                                         sup_be->be_suffix, sup_be->be_nsuffix );
 176                         }
 177                 }
 178         }
 179
 180         (void)init_readOnly( mi, e, be->be_restrictops );
 181         (void)init_restrictedOperation( mi, e, be->be_restrictops );
 182
 183         if ( SLAP_SHADOW( be ) && be->be_update_refs ) {
 184                 attr_merge_normalize( e, mi->mi_ad_monitorUpdateRef,
 185                                 be->be_update_refs, NULL );
 186         }
 187
 188         if ( oi != NULL ) {
 189                 slap_overinst   *on = oi->oi_list,
 190                                 *on1 = on;
 191
 192                 for ( ; on; on = on->on_next ) {
 193                         slap_overinst           *on2;
 194
 195                         for ( on2 = on1; on2 != on; on2 = on2->on_next ) {
 196                                 if ( on2->on_bi.bi_type == on->on_bi.bi_type ) {
 197                                         break;
 198                                 }
 199                         }
 200
 201                         if ( on2 != on ) {
 202                                 break;
 203                         }
 204
 205                         ber_str2bv( on->on_bi.bi_type, 0, 0, &bv );
 206                         attr_merge_normalize_one( e, mi->mi_ad_monitorOverlay,
 207                                         &bv, NULL );
 208
 209                         /* find the overlay number, j */
 210                         for ( on2 = overlay_next( NULL ), j = 0; on2; on2 = overlay_next( on2 ), j++ ) {
 211                                 if ( on2->on_bi.bi_type == on->on_bi.bi_type ) {
 212                                         break;
 213                                 }
 214                         }
 215                         assert( on2 != NULL );
 216
 217                         snprintf( buf, sizeof( buf ),
 218                                 "cn=Overlay %d,%s",
 219                                 j, ms_overlay->mss_dn.bv_val );
 220                         ber_str2bv( buf, 0, 0, &bv );
 221                         attr_merge_normalize_one( e,
 222                                         slap_schema.si_ad_seeAlso,
 223                                         &bv, NULL );
 224                 }
 225         }
 226
 227         j = -1;
 228         LDAP_STAILQ_FOREACH( bi2, &backendInfo, bi_next ) {
 229                 j++;
 230                 if ( bi2->bi_type == bi->bi_type ) {
 231                         snprintf( buf, sizeof( buf ),
 232                                 "cn=Backend %d,%s",
 233                                 j, ms_backend->mss_dn.bv_val );
 234                         bv.bv_val = buf;
 235                         bv.bv_len = strlen( buf );
 236                         attr_merge_normalize_one( e,
 237                                         slap_schema.si_ad_seeAlso,
 238                                         &bv, NULL );
 239                         break;
 240                 }
 241         }
 242         /* we must find it! */
 243         assert( j >= 0 );
 244
 245         mp = monitor_entrypriv_create();
 246         if ( mp == NULL ) {
 247                 return -1;
 248         }
 249         e->e_private = ( void * )mp;
 250         mp->mp_info = ms;
 251         mp->mp_flags = ms->mss_flags
 252                 | MONITOR_F_SUB;
 253
 254         if ( monitor_cache_add( mi, e ) ) {
 255                 Debug( LDAP_DEBUG_ANY,
 256                         "monitor_subsys_database_init: "
 257                         "unable to add entry \"%s,%s\"\n",
 258                         rdn->bv_val, ms->mss_dn.bv_val, 0 );
 259                 return( -1 );
 260         }
 261
 262 #if defined(LDAP_SLAPI)
 263         monitor_back_add_plugin( mi, be, e );
 264 #endif /* defined(LDAP_SLAPI) */
 265
 266         if ( oi != NULL ) {
 267                 Entry           **ep_overlay = &mp->mp_children;
 268                 monitor_entry_t *mp_overlay;
 269                 slap_overinst   *on = oi->oi_list;
 270                 int             o;
 271
 272                 for ( o = 0; on; o++, on = on->on_next ) {
 273                         Entry                   *e_overlay;
 274                         slap_overinst           *on2;
 275
 276                         /* find the overlay number, j */
 277                         for ( on2 = overlay_next( NULL ), j = 0; on2; on2 = overlay_next( on2 ), j++ ) {
 278                                 if ( on2->on_bi.bi_type == on->on_bi.bi_type ) {
 279                                         break;
 280                                 }
 281                         }
 282                         assert( on2 != NULL );
 283
 284                         bv.bv_len = snprintf( buf, sizeof( buf ), "cn=Overlay %d", o );
 285                         bv.bv_val = buf;
 286
 287                         e_overlay = monitor_entry_stub( &e->e_name, &e->e_nname, &bv,
 288                                 mi->mi_oc_monitoredObject, mi, NULL, NULL );
 289
 290                         if ( e_overlay == NULL ) {
 291                                 Debug( LDAP_DEBUG_ANY,
 292                                         "monitor_subsys_database_init: "
 293                                         "unable to create entry "
 294                                         "\"cn=Overlay %d,%s,%s\"\n",
 295                                         o, rdn->bv_val, ms->mss_dn.bv_val );
 296                                 return( -1 );
 297                         }
 298                         ber_str2bv( on->on_bi.bi_type, 0, 0, &bv );
 299                         attr_merge_normalize_one( e_overlay, mi->mi_ad_monitoredInfo, &bv, NULL );
 300
 301                         bv.bv_len = snprintf( buf, sizeof( buf ), "cn=Overlay %d,%s",
 302                                 j, ms_overlay->mss_dn.bv_val );
 303                         bv.bv_val = buf;
 304                         attr_merge_normalize_one( e_overlay, slap_schema.si_ad_seeAlso,
 305                                 &bv, NULL );
 306
 307                         if ( SLAP_MONITOR( be ) ) {
 308                                 attr_merge( e_overlay, slap_schema.si_ad_monitorContext,
 309                                                 be->be_suffix, be->be_nsuffix );
 310
 311                         } else {
 312                                 attr_merge( e_overlay, slap_schema.si_ad_namingContexts,
 313                                                 be->be_suffix, NULL );
 314                         }
 315
 316                         mp_overlay = monitor_entrypriv_create();
 317                         if ( mp_overlay == NULL ) {
 318                                 return -1;
 319                         }
 320                         e_overlay->e_private = ( void * )mp_overlay;
 321                         mp_overlay->mp_info = ms;
 322                         mp_overlay->mp_flags = ms->mss_flags
 323                                 | MONITOR_F_SUB;
 324
 325                         if ( monitor_cache_add( mi, e_overlay ) ) {
 326                                 Debug( LDAP_DEBUG_ANY,
 327                                         "monitor_subsys_database_init: "
 328                                         "unable to add entry "
 329                                         "\"cn=Overlay %d,%s,%s\"\n",
 330                                         o, rdn->bv_val, ms->mss_dn.bv_val );
 331                                 return( -1 );
 332                         }
 333
 334                         *ep_overlay = e_overlay;
 335                         ep_overlay = &mp_overlay->mp_next;
 336                 }
 337         }
 338
 339         **epp = e;
 340         *epp = &mp->mp_next;
 341
 342         return 0;
 343 }
 344
 345 int
 346 monitor_back_register_database(
 347         BackendDB               *be,
 348         struct berval   *ndn )
 349 {
 350         monitor_info_t          *mi;
 351         Entry                   *e_database, **ep;
 352         int                     i, rc;
 353         monitor_entry_t         *mp;
 354         monitor_subsys_t        *ms_backend,
 355                                 *ms_database,
 356                                 *ms_overlay;
 357         struct berval           bv;
 358         char                    buf[ BACKMONITOR_BUFSIZE ];
 359
 360         assert( be_monitor != NULL );
 361
 362         if ( !monitor_subsys_is_opened() ) {
 363                 return monitor_back_register_database_limbo( be, ndn );
 364         }
 365
 366         mi = ( monitor_info_t * )be_monitor->be_private;
 367
 368         ms_backend = monitor_back_get_subsys( SLAPD_MONITOR_BACKEND_NAME );
 369         if ( ms_backend == NULL ) {
 370                 Debug( LDAP_DEBUG_ANY,
 371                         "monitor_back_register_database: "
 372                         "unable to get "
 373                         "\"" SLAPD_MONITOR_BACKEND_NAME "\" "
 374                         "subsystem\n",
 375                         0, 0, 0 );
 376                 return -1;
 377         }
 378
 379         ms_database = monitor_back_get_subsys( SLAPD_MONITOR_DATABASE_NAME );
 380         if ( ms_database == NULL ) {
 381                 Debug( LDAP_DEBUG_ANY,
 382                         "monitor_back_register_database: "
 383                         "unable to get "
 384                         "\"" SLAPD_MONITOR_DATABASE_NAME "\" "
 385                         "subsystem\n",
 386                         0, 0, 0 );
 387                 return -1;
 388         }
 389
 390         ms_overlay = monitor_back_get_subsys( SLAPD_MONITOR_OVERLAY_NAME );
 391         if ( ms_overlay == NULL ) {
 392                 Debug( LDAP_DEBUG_ANY,
 393                         "monitor_back_register_database: "
 394                         "unable to get "
 395                         "\"" SLAPD_MONITOR_OVERLAY_NAME "\" "
 396                         "subsystem\n",
 397                         0, 0, 0 );
 398                 return -1;
 399         }
 400
 401         if ( monitor_cache_get( mi, &ms_database->mss_ndn, &e_database ) ) {
 402                 Debug( LDAP_DEBUG_ANY,
 403                         "monitor_subsys_database_init: "
 404                         "unable to get entry \"%s\"\n",
 405                         ms_database->mss_ndn.bv_val, 0, 0 );
 406                 return( -1 );
 407         }
 408
 409         mp = ( monitor_entry_t * )e_database->e_private;
 410         for ( i = -1, ep = &mp->mp_children; *ep; i++ ) {
 411                 Attribute       *a;
 412
 413                 a = attr_find( (*ep)->e_attrs, slap_schema.si_ad_namingContexts );
 414                 if ( a ) {
 415                         int             j, k;
 416
 417                         /* FIXME: RFC 4512 defines namingContexts without an
 418                          *        equality matching rule, making comparisons
 419                          *        like this one tricky.  We use a_vals and
 420                          *        be_suffix instead for now.
 421                          */
 422                         for ( j = 0; !BER_BVISNULL( &a->a_vals[ j ] ); j++ ) {
 423                                 for ( k = 0; !BER_BVISNULL( &be->be_suffix[ k ] ); k++ ) {
 424                                         if ( dn_match( &a->a_vals[ j ],
 425                                                        &be->be_suffix[ k ] ) ) {
 426                                                 rc = 0;
 427                                                 goto done;
 428                                         }
 429                                 }
 430                         }
 431                 }
 432
 433                 mp = ( monitor_entry_t * )(*ep)->e_private;
 434
 435                 assert( mp != NULL );
 436                 ep = &mp->mp_next;
 437         }
 438
 439         bv.bv_val = buf;
 440         bv.bv_len = snprintf( buf, sizeof( buf ), "cn=Database %d", i );
 441         if ( bv.bv_len >= sizeof( buf ) ) {
 442                 rc = -1;
 443                 goto done;
 444         }
 445
 446         rc = monitor_subsys_database_init_one( mi, be,
 447                 ms_database, ms_backend, ms_overlay, &bv, e_database, &ep );
 448         if ( rc != 0 ) {
 449                 goto done;
 450         }
 451         /* database_init_one advanced ep past where we want.
 452          * But it stored the entry we want in mp->mp_next.
 453          */
 454         ep = &mp->mp_next;
 455
 456 done:;
 457         monitor_cache_release( mi, e_database );
 458         if ( rc == 0 && ndn && ep && *ep ) {
 459                 *ndn = (*ep)->e_nname;
 460         }
 461
 462         return rc;
 463 }
 464
 465 int
 466 monitor_subsys_database_init(
 467         BackendDB               *be,
 468         monitor_subsys_t        *ms )
 469 {
 470         monitor_info_t          *mi;
 471         Entry                   *e_database, **ep;
 472         int                     i, rc;
 473         monitor_entry_t         *mp;
 474         monitor_subsys_t        *ms_backend,
 475                                 *ms_overlay;
 476         struct berval           bv;
 477
 478         assert( be != NULL );
 479
 480         ms->mss_modify = monitor_subsys_database_modify;
 481
 482         mi = ( monitor_info_t * )be->be_private;
 483
 484         ms_backend = monitor_back_get_subsys( SLAPD_MONITOR_BACKEND_NAME );
 485         if ( ms_backend == NULL ) {
 486                 Debug( LDAP_DEBUG_ANY,
 487                         "monitor_subsys_database_init: "
 488                         "unable to get "
 489                         "\"" SLAPD_MONITOR_BACKEND_NAME "\" "
 490                         "subsystem\n",
 491                         0, 0, 0 );
 492                 return -1;
 493         }
 494
 495         ms_overlay = monitor_back_get_subsys( SLAPD_MONITOR_OVERLAY_NAME );
 496         if ( ms_overlay == NULL ) {
 497                 Debug( LDAP_DEBUG_ANY,
 498                         "monitor_subsys_database_init: "
 499                         "unable to get "
 500                         "\"" SLAPD_MONITOR_OVERLAY_NAME "\" "
 501                         "subsystem\n",
 502                         0, 0, 0 );
 503                 return -1;
 504         }
 505
 506         if ( monitor_cache_get( mi, &ms->mss_ndn, &e_database ) ) {
 507                 Debug( LDAP_DEBUG_ANY,
 508                         "monitor_subsys_database_init: "
 509                         "unable to get entry \"%s\"\n",
 510                         ms->mss_ndn.bv_val, 0, 0 );
 511                 return( -1 );
 512         }
 513
 514         (void)init_readOnly( mi, e_database, frontendDB->be_restrictops );
 515         (void)init_restrictedOperation( mi, e_database, frontendDB->be_restrictops );
 516
 517         mp = ( monitor_entry_t * )e_database->e_private;
 518         mp->mp_children = NULL;
 519         ep = &mp->mp_children;
 520
 521         BER_BVSTR( &bv, "cn=Frontend" );
 522         rc = monitor_subsys_database_init_one( mi, frontendDB,
 523                 ms, ms_backend, ms_overlay, &bv, e_database, &ep );
 524         if ( rc != 0 ) {
 525                 return rc;
 526         }
 527
 528         i = -1;
 529         LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
 530                 char            buf[ BACKMONITOR_BUFSIZE ];
 531
 532                 bv.bv_val = buf;
 533                 bv.bv_len = snprintf( buf, sizeof( buf ), "cn=Database %d", ++i );
 534                 if ( bv.bv_len >= sizeof( buf ) ) {
 535                         return -1;
 536                 }
 537
 538                 rc = monitor_subsys_database_init_one( mi, be,
 539                         ms, ms_backend, ms_overlay, &bv, e_database, &ep );
 540                 if ( rc != 0 ) {
 541                         return rc;
 542                 }
 543         }
 544
 545         monitor_cache_release( mi, e_database );
 546
 547         return( 0 );
 548 }
 549
 550 /*
 551  * v: array of values
 552  * cur: must not contain the tags corresponding to the values in v
 553  * delta: will contain the tags corresponding to the values in v
 554  */
 555 static int
 556 value_mask( BerVarray v, slap_mask_t cur, slap_mask_t *delta )
 557 {
 558         for ( ; !BER_BVISNULL( v ); v++ ) {
 559                 struct restricted_ops_t         *rops;
 560                 int                             i;
 561
 562                 if ( OID_LEADCHAR( v->bv_val[ 0 ] ) ) {
 563                         rops = restricted_exops;
 564
 565                 } else {
 566                         rops = restricted_ops;
 567                 }
 568
 569                 for ( i = 0; !BER_BVISNULL( &rops[ i ].op ); i++ ) {
 570                         if ( ber_bvstrcasecmp( v, &rops[ i ].op ) != 0 ) {
 571                                 continue;
 572                         }
 573
 574                         if ( rops[ i ].tag & *delta ) {
 575                                 return LDAP_OTHER;
 576                         }
 577
 578                         if ( rops[ i ].tag & cur ) {
 579                                 return LDAP_OTHER;
 580                         }
 581
 582                         cur |= rops[ i ].tag;
 583                         *delta |= rops[ i ].tag;
 584
 585                         break;
 586                 }
 587
 588                 if ( BER_BVISNULL( &rops[ i ].op ) ) {
 589                         return LDAP_INVALID_SYNTAX;
 590                 }
 591         }
 592
 593         return LDAP_SUCCESS;
 594 }
 595
 596 static int
 597 monitor_subsys_database_modify(
 598         Operation       *op,
 599         SlapReply       *rs,
 600         Entry           *e )
 601 {
 602         monitor_info_t  *mi = (monitor_info_t *)op->o_bd->be_private;
 603         int             rc = LDAP_OTHER;
 604         Attribute       *save_attrs, *a;
 605         Modifications   *ml;
 606         Backend         *be;
 607         int             ro_gotval = 1, i, n;
 608         slap_mask_t     rp_add = 0, rp_delete = 0, rp_cur;
 609         struct berval   *tf;
 610
 611         i = sscanf( e->e_nname.bv_val, "cn=database %d,", &n );
 612         if ( i != 1 ) {
 613                 return SLAP_CB_CONTINUE;
 614         }
 615
 616         if ( n < 0 || n >= nBackendDB ) {
 617                 rs->sr_text = "invalid database index";
 618                 return ( rs->sr_err = LDAP_NO_SUCH_OBJECT );
 619         }
 620
 621         LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
 622                 if ( n == 0 ) {
 623                         break;
 624                 }
 625                 n--;
 626         }
 627         /* do not allow some changes on back-monitor (needs work)... */
 628         if ( SLAP_MONITOR( be ) ) {
 629                 rs->sr_text = "no modifications allowed to monitor database entry";
 630                 return ( rs->sr_err = LDAP_UNWILLING_TO_PERFORM );
 631         }
 632
 633         rp_cur = be->be_restrictops;
 634
 635         save_attrs = e->e_attrs;
 636         e->e_attrs = attrs_dup( e->e_attrs );
 637
 638         for ( ml = op->orm_modlist; ml; ml = ml->sml_next ) {
 639                 Modification *mod = &ml->sml_mod;
 640
 641                 if ( mod->sm_desc == mi->mi_ad_readOnly ) {
 642                         int     val = -1;
 643
 644                         if ( mod->sm_values ) {
 645                                 if ( !BER_BVISNULL( &mod->sm_values[ 1 ] ) ) {
 646                                         rs->sr_text = "attempting to modify multiple values of single-valued attribute";
 647                                         rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 648                                         goto done;
 649                                 }
 650
 651                                 if ( bvmatch( &slap_true_bv, mod->sm_values )) {
 652                                         val = 1;
 653
 654                                 } else if ( bvmatch( &slap_false_bv, mod->sm_values )) {
 655                                         val = 0;
 656
 657                                 } else {
 658                                         assert( 0 );
 659                                         rc = rs->sr_err = LDAP_INVALID_SYNTAX;
 660                                         goto done;
 661                                 }
 662                         }
 663
 664                         switch ( mod->sm_op ) {
 665                         case LDAP_MOD_DELETE:
 666                                 if ( ro_gotval < 1 ) {
 667                                         rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 668                                         goto done;
 669                                 }
 670                                 ro_gotval--;
 671
 672                                 if ( val == 0 && ( rp_cur & SLAP_RESTRICT_OP_WRITES ) == SLAP_RESTRICT_OP_WRITES ) {
 673                                         rc = rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE;
 674                                         goto done;
 675                                 }
 676
 677                                 if ( val == 1 && ( rp_cur & SLAP_RESTRICT_OP_WRITES ) != SLAP_RESTRICT_OP_WRITES ) {
 678                                         rc = rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE;
 679                                         goto done;
 680                                 }
 681
 682                                 break;
 683
 684                         case LDAP_MOD_REPLACE:
 685                                 ro_gotval = 0;
 686                                 /* fall thru */
 687
 688                         case LDAP_MOD_ADD:
 689                                 if ( ro_gotval > 0 ) {
 690                                         rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 691                                         goto done;
 692                                 }
 693                                 ro_gotval++;
 694
 695                                 if ( val == 1 ) {
 696                                         rp_add |= (~rp_cur) & SLAP_RESTRICT_OP_WRITES;
 697                                         rp_cur |= SLAP_RESTRICT_OP_WRITES;
 698                                         rp_delete &= ~SLAP_RESTRICT_OP_WRITES;
 699
 700                                 } else if ( val == 0 ) {
 701                                         rp_delete |= rp_cur & SLAP_RESTRICT_OP_WRITES;
 702                                         rp_cur &= ~SLAP_RESTRICT_OP_WRITES;
 703                                         rp_add &= ~SLAP_RESTRICT_OP_WRITES;
 704                                 }
 705                                 break;
 706
 707                         default:
 708                                 rc = rs->sr_err = LDAP_OTHER;
 709                                 goto done;
 710                         }
 711
 712                 } else if ( mod->sm_desc == mi->mi_ad_restrictedOperation ) {
 713                         slap_mask_t     mask = 0;
 714
 715                         switch ( mod->sm_op ) {
 716                         case LDAP_MOD_DELETE:
 717                                 if ( mod->sm_values == NULL ) {
 718                                         rp_delete = rp_cur;
 719                                         rp_cur = 0;
 720                                         rp_add = 0;
 721                                         break;
 722                                 }
 723                                 rc = value_mask( mod->sm_values, ~rp_cur, &mask );
 724                                 if ( rc == LDAP_SUCCESS ) {
 725                                         rp_delete |= mask;
 726                                         rp_add &= ~mask;
 727                                         rp_cur &= ~mask;
 728
 729                                 } else if ( rc == LDAP_OTHER ) {
 730                                         rc = LDAP_NO_SUCH_ATTRIBUTE;
 731                                 }
 732                                 break;
 733
 734                         case LDAP_MOD_REPLACE:
 735                                 rp_delete = rp_cur;
 736                                 rp_cur = 0;
 737                                 rp_add = 0;
 738                                 /* fall thru */
 739
 740                         case LDAP_MOD_ADD:
 741                                 rc = value_mask( mod->sm_values, rp_cur, &mask );
 742                                 if ( rc == LDAP_SUCCESS ) {
 743                                         rp_add |= mask;
 744                                         rp_cur |= mask;
 745                                         rp_delete &= ~mask;
 746
 747                                 } else if ( rc == LDAP_OTHER ) {
 748                                         rc = rs->sr_err = LDAP_TYPE_OR_VALUE_EXISTS;
 749                                 }
 750                                 break;
 751
 752                         default:
 753                                 rc = rs->sr_err = LDAP_OTHER;
 754                                 break;
 755                         }
 756
 757                         if ( rc != LDAP_SUCCESS ) {
 758                                 goto done;
 759                         }
 760
 761                 } else if ( is_at_operational( mod->sm_desc->ad_type )) {
 762                 /* accept all operational attributes */
 763                         attr_delete( &e->e_attrs, mod->sm_desc );
 764                         rc = attr_merge( e, mod->sm_desc, mod->sm_values,
 765                                 mod->sm_nvalues );
 766                         if ( rc ) {
 767                                 rc = rs->sr_err = LDAP_OTHER;
 768                                 break;
 769                         }
 770
 771                 } else {
 772                         rc = rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
 773                         break;
 774                 }
 775         }
 776
 777         /* sanity checks: */
 778         if ( ro_gotval < 1 ) {
 779                 rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 780                 goto done;
 781         }
 782
 783         if ( ( rp_cur & SLAP_RESTRICT_OP_EXTENDED ) && ( rp_cur & SLAP_RESTRICT_EXOP_MASK ) ) {
 784                 rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 785                 goto done;
 786         }
 787
 788         if ( rp_delete & rp_add ) {
 789                 rc = rs->sr_err = LDAP_OTHER;
 790                 goto done;
 791         }
 792
 793         /* check current value of readOnly */
 794         if ( ( rp_cur & SLAP_RESTRICT_OP_WRITES ) == SLAP_RESTRICT_OP_WRITES ) {
 795                 tf = (struct berval *)&slap_true_bv;
 796
 797         } else {
 798                 tf = (struct berval *)&slap_false_bv;
 799         }
 800
 801         a = attr_find( e->e_attrs, mi->mi_ad_readOnly );
 802         if ( a == NULL ) {
 803                 rc = LDAP_OTHER;
 804                 goto done;
 805         }
 806
 807         if ( !bvmatch( &a->a_vals[ 0 ], tf ) ) {
 808                 attr_delete( &e->e_attrs, mi->mi_ad_readOnly );
 809                 rc = attr_merge_one( e, mi->mi_ad_readOnly, tf, tf );
 810         }
 811
 812         if ( rc == LDAP_SUCCESS ) {
 813                 if ( rp_delete ) {
 814                         if ( rp_delete == be->be_restrictops ) {
 815                                 attr_delete( &e->e_attrs, mi->mi_ad_restrictedOperation );
 816
 817                         } else {
 818                                 a = attr_find( e->e_attrs, mi->mi_ad_restrictedOperation );
 819                                 if ( a == NULL ) {
 820                                         rc = rs->sr_err = LDAP_OTHER;
 821                                         goto done;
 822                                 }
 823
 824                                 for ( i = 0; !BER_BVISNULL( &restricted_ops[ i ].op ); i++ ) {
 825                                         if ( rp_delete & restricted_ops[ i ].tag ) {
 826                                                 int     j;
 827
 828                                                 for ( j = 0; !BER_BVISNULL( &a->a_nvals[ j ] ); j++ ) {
 829                                                         int             k;
 830
 831                                                         if ( !bvmatch( &a->a_nvals[ j ], &restricted_ops[ i ].op ) ) {
 832                                                                 continue;
 833                                                         }
 834
 835                                                         ch_free( a->a_vals[ j ].bv_val );
 836                                                         ch_free( a->a_nvals[ j ].bv_val );
 837
 838                                                         for ( k = j + 1; !BER_BVISNULL( &a->a_nvals[ k ] ); k++ ) {
 839                                                                 a->a_vals[ k - 1 ] = a->a_vals[ k ];
 840                                                                 a->a_nvals[ k - 1 ] = a->a_nvals[ k ];
 841                                                         }
 842
 843                                                         BER_BVZERO( &a->a_vals[ k - 1 ] );
 844                                                         BER_BVZERO( &a->a_nvals[ k - 1 ] );
 845                                                         a->a_numvals--;
 846                                                 }
 847                                         }
 848                                 }
 849
 850                                 for ( i = 0; !BER_BVISNULL( &restricted_exops[ i ].op ); i++ ) {
 851                                         if ( rp_delete & restricted_exops[ i ].tag ) {
 852                                                 int     j;
 853
 854                                                 for ( j = 0; !BER_BVISNULL( &a->a_nvals[ j ] ); j++ ) {
 855                                                         int             k;
 856
 857                                                         if ( !bvmatch( &a->a_nvals[ j ], &restricted_exops[ i ].op ) ) {
 858                                                                 continue;
 859                                                         }
 860
 861                                                         ch_free( a->a_vals[ j ].bv_val );
 862                                                         ch_free( a->a_nvals[ j ].bv_val );
 863
 864                                                         for ( k = j + 1; !BER_BVISNULL( &a->a_nvals[ k ] ); k++ ) {
 865                                                                 a->a_vals[ k - 1 ] = a->a_vals[ k ];
 866                                                                 a->a_nvals[ k - 1 ] = a->a_nvals[ k ];
 867                                                         }
 868
 869                                                         BER_BVZERO( &a->a_vals[ k - 1 ] );
 870                                                         BER_BVZERO( &a->a_nvals[ k - 1 ] );
 871                                                         a->a_numvals--;
 872                                                 }
 873                                         }
 874                                 }
 875
 876                                 if ( a->a_vals == NULL ) {
 877                                         assert( a->a_numvals == 0 );
 878
 879                                         attr_delete( &e->e_attrs, mi->mi_ad_restrictedOperation );
 880                                 }
 881                         }
 882                 }
 883
 884                 if ( rp_add ) {
 885                         for ( i = 0; !BER_BVISNULL( &restricted_ops[ i ].op ); i++ ) {
 886                                 if ( rp_add & restricted_ops[ i ].tag ) {
 887                                         attr_merge_one( e, mi->mi_ad_restrictedOperation,
 888                                                         &restricted_ops[ i ].op,
 889                                                         &restricted_ops[ i ].op );
 890                                 }
 891                         }
 892
 893                         for ( i = 0; !BER_BVISNULL( &restricted_exops[ i ].op ); i++ ) {
 894                                 if ( rp_add & restricted_exops[ i ].tag ) {
 895                                         attr_merge_one( e, mi->mi_ad_restrictedOperation,
 896                                                         &restricted_exops[ i ].op,
 897                                                         &restricted_exops[ i ].op );
 898                                 }
 899                         }
 900                 }
 901         }
 902
 903         be->be_restrictops = rp_cur;
 904
 905 done:;
 906         if ( rc == LDAP_SUCCESS ) {
 907                 attrs_free( save_attrs );
 908                 rc = SLAP_CB_CONTINUE;
 909
 910         } else {
 911                 Attribute *tmp = e->e_attrs;
 912                 e->e_attrs = save_attrs;
 913                 attrs_free( tmp );
 914         }
 915         return rc;
 916 }
 917
 918 #if defined(LDAP_SLAPI)
 919 static int
 920 monitor_back_add_plugin( monitor_info_t *mi, Backend *be, Entry *e_database )
 921 {
 922         Slapi_PBlock    *pCurrentPB;
 923         int             i, rc = LDAP_SUCCESS;
 924
 925         if ( slapi_int_pblock_get_first( be, &pCurrentPB ) != LDAP_SUCCESS ) {
 926                 /*
 927                  * LDAP_OTHER is returned if no plugins are installed
 928                  */
 929                 rc = LDAP_OTHER;
 930                 goto done;
 931         }
 932
 933         i = 0;
 934         do {
 935                 Slapi_PluginDesc        *srchdesc;
 936                 char                    buf[ BACKMONITOR_BUFSIZE ];
 937                 struct berval           bv;
 938
 939                 rc = slapi_pblock_get( pCurrentPB, SLAPI_PLUGIN_DESCRIPTION,
 940                                 &srchdesc );
 941                 if ( rc != LDAP_SUCCESS ) {
 942                         goto done;
 943                 }
 944                 if ( srchdesc ) {
 945                         snprintf( buf, sizeof(buf),
 946                                         "plugin %d name: %s; "
 947                                         "vendor: %s; "
 948                                         "version: %s; "
 949                                         "description: %s",
 950                                         i,
 951                                         srchdesc->spd_id,
 952                                         srchdesc->spd_vendor,
 953                                         srchdesc->spd_version,
 954                                         srchdesc->spd_description );
 955                 } else {
 956                         snprintf( buf, sizeof(buf),
 957                                         "plugin %d name: <no description available>", i );
 958                 }
 959
 960                 ber_str2bv( buf, 0, 0, &bv );
 961                 attr_merge_normalize_one( e_database,
 962                                 mi->mi_ad_monitoredInfo, &bv, NULL );
 963
 964                 i++;
 965
 966         } while ( ( slapi_int_pblock_get_next( &pCurrentPB ) == LDAP_SUCCESS )
 967                         && ( pCurrentPB != NULL ) );
 968
 969 done:
 970         return rc;
 971 }
 972 #endif /* defined(LDAP_SLAPI) */