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 2001-2014 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_overlay_init_one(
 104         monitor_info_t          *mi,
 105         BackendDB               *be,
 106         monitor_subsys_t        *ms,
 107         monitor_subsys_t        *ms_overlay,
 108         slap_overinst           *on,
 109         Entry                   *e_database,
 110         Entry                   **ep_overlay )
 111 {
 112         char                    buf[ BACKMONITOR_BUFSIZE ];
 113         int                     j, o;
 114         Entry                   *e_overlay;
 115         slap_overinst           *on2;
 116         slap_overinfo           *oi = NULL;
 117         BackendInfo             *bi;
 118         monitor_entry_t         *mp_overlay;
 119         struct berval           bv;
 120
 121         assert( overlay_is_over( be ) );
 122
 123         oi = (slap_overinfo *)be->bd_info->bi_private;
 124         bi = oi->oi_orig;
 125
 126         /* find the overlay number, o */
 127         for ( o = 0, on2 = oi->oi_list; on2 && on2 != on; on2 = on2->on_next, o++ )
 128                 ;
 129
 130         if ( on2 == NULL ) {
 131                 return -1;
 132         }
 133
 134         /* find the overlay type number, j */
 135         for ( on2 = overlay_next( NULL ), j = 0; on2; on2 = overlay_next( on2 ), j++ ) {
 136                 if ( on2->on_bi.bi_type == on->on_bi.bi_type ) {
 137                         break;
 138                 }
 139         }
 140         assert( on2 != NULL );
 141
 142         bv.bv_len = snprintf( buf, sizeof( buf ), "cn=Overlay %d", o );
 143         bv.bv_val = buf;
 144
 145         e_overlay = monitor_entry_stub( &e_database->e_name, &e_database->e_nname, &bv,
 146                 mi->mi_oc_monitoredObject, NULL, NULL );
 147
 148         if ( e_overlay == NULL ) {
 149                 Debug( LDAP_DEBUG_ANY,
 150                         "monitor_subsys_overlay_init_one: "
 151                         "unable to create entry "
 152                         "\"cn=Overlay %d,%s\"\n",
 153                         o, e_database->e_name.bv_val, 0 );
 154                 return( -1 );
 155         }
 156         ber_str2bv( on->on_bi.bi_type, 0, 0, &bv );
 157         attr_merge_normalize_one( e_overlay, mi->mi_ad_monitoredInfo, &bv, NULL );
 158
 159         bv.bv_len = snprintf( buf, sizeof( buf ), "cn=Overlay %d,%s",
 160                 j, ms_overlay->mss_dn.bv_val );
 161         bv.bv_val = buf;
 162         attr_merge_normalize_one( e_overlay, slap_schema.si_ad_seeAlso,
 163                 &bv, NULL );
 164
 165         if ( SLAP_MONITOR( be ) ) {
 166                 attr_merge( e_overlay, slap_schema.si_ad_monitorContext,
 167                                 be->be_suffix, be->be_nsuffix );
 168
 169         } else {
 170                 attr_merge( e_overlay, slap_schema.si_ad_namingContexts,
 171                                 be->be_suffix, NULL );
 172         }
 173
 174         mp_overlay = monitor_entrypriv_create();
 175         if ( mp_overlay == NULL ) {
 176                 return -1;
 177         }
 178         e_overlay->e_private = ( void * )mp_overlay;
 179         mp_overlay->mp_info = ms;
 180         mp_overlay->mp_flags = ms->mss_flags | MONITOR_F_SUB;
 181
 182         if ( monitor_cache_add( mi, e_overlay ) ) {
 183                 Debug( LDAP_DEBUG_ANY,
 184                         "monitor_subsys_overlay_init_one: "
 185                         "unable to add entry "
 186                         "\"cn=Overlay %d,%s\"\n",
 187                         o, e_database->e_name.bv_val, 0 );
 188                 return -1;
 189         }
 190
 191         *ep_overlay = e_overlay;
 192         ep_overlay = &mp_overlay->mp_next;
 193
 194         return 0;
 195 }
 196
 197 static int
 198 monitor_subsys_database_init_one(
 199         monitor_info_t          *mi,
 200         BackendDB               *be,
 201         monitor_subsys_t        *ms,
 202         monitor_subsys_t        *ms_backend,
 203         monitor_subsys_t        *ms_overlay,
 204         struct berval           *rdn,
 205         Entry                   *e_database,
 206         Entry                   ***epp )
 207 {
 208         char                    buf[ BACKMONITOR_BUFSIZE ];
 209         int                     j;
 210         slap_overinfo           *oi = NULL;
 211         BackendInfo             *bi, *bi2;
 212         Entry                   *e;
 213         monitor_entry_t         *mp;
 214         char                    *rdnval = strchr( rdn->bv_val, '=' ) + 1;
 215         struct berval           bv;
 216
 217         bi = be->bd_info;
 218
 219         if ( overlay_is_over( be ) ) {
 220                 oi = (slap_overinfo *)be->bd_info->bi_private;
 221                 bi = oi->oi_orig;
 222         }
 223
 224         e = monitor_entry_stub( &ms->mss_dn, &ms->mss_ndn, rdn,
 225                 mi->mi_oc_monitoredObject, NULL, NULL );
 226
 227         if ( e == NULL ) {
 228                 Debug( LDAP_DEBUG_ANY,
 229                         "monitor_subsys_database_init_one: "
 230                         "unable to create entry \"%s,%s\"\n",
 231                         rdn->bv_val, ms->mss_dn.bv_val, 0 );
 232                 return( -1 );
 233         }
 234
 235         ber_str2bv( bi->bi_type, 0, 0, &bv );
 236         attr_merge_normalize_one( e, mi->mi_ad_monitoredInfo, &bv, NULL );
 237         attr_merge_one( e, mi->mi_ad_monitorIsShadow,
 238                 SLAP_SHADOW( be ) ? (struct berval *)&slap_true_bv :
 239                         (struct berval *)&slap_false_bv, NULL );
 240
 241         if ( SLAP_MONITOR( be ) ) {
 242                 attr_merge( e, slap_schema.si_ad_monitorContext,
 243                                 be->be_suffix, be->be_nsuffix );
 244                 attr_merge( e_database, slap_schema.si_ad_monitorContext,
 245                                 be->be_suffix, be->be_nsuffix );
 246
 247         } else {
 248                 if ( be->be_suffix == NULL ) {
 249                         Debug( LDAP_DEBUG_ANY,
 250                                 "monitor_subsys_database_init_one: "
 251                                 "missing suffix for %s\n",
 252                                 rdnval, 0, 0 );
 253                 } else {
 254                         attr_merge( e, slap_schema.si_ad_namingContexts,
 255                                 be->be_suffix, NULL );
 256                         attr_merge( e_database, slap_schema.si_ad_namingContexts,
 257                                 be->be_suffix, NULL );
 258                 }
 259
 260                 if ( SLAP_GLUE_SUBORDINATE( be ) ) {
 261                         BackendDB *sup_be = select_backend( &be->be_nsuffix[ 0 ], 1 );
 262                         if ( sup_be == NULL ) {
 263                                 Debug( LDAP_DEBUG_ANY,
 264                                         "monitor_subsys_database_init: "
 265                                         "unable to get superior for %s\n",
 266                                         be->be_suffix[ 0 ].bv_val, 0, 0 );
 267
 268                         } else {
 269                                 attr_merge( e, mi->mi_ad_monitorSuperiorDN,
 270                                         sup_be->be_suffix, sup_be->be_nsuffix );
 271                         }
 272                 }
 273         }
 274
 275         (void)init_readOnly( mi, e, be->be_restrictops );
 276         (void)init_restrictedOperation( mi, e, be->be_restrictops );
 277
 278         if ( SLAP_SHADOW( be ) && be->be_update_refs ) {
 279                 attr_merge_normalize( e, mi->mi_ad_monitorUpdateRef,
 280                                 be->be_update_refs, NULL );
 281         }
 282
 283         if ( oi != NULL ) {
 284                 slap_overinst   *on = oi->oi_list,
 285                                 *on1 = on;
 286
 287                 for ( ; on; on = on->on_next ) {
 288                         slap_overinst           *on2;
 289
 290                         for ( on2 = on1; on2 != on; on2 = on2->on_next ) {
 291                                 if ( on2->on_bi.bi_type == on->on_bi.bi_type ) {
 292                                         break;
 293                                 }
 294                         }
 295
 296                         if ( on2 != on ) {
 297                                 break;
 298                         }
 299
 300                         ber_str2bv( on->on_bi.bi_type, 0, 0, &bv );
 301                         attr_merge_normalize_one( e, mi->mi_ad_monitorOverlay,
 302                                         &bv, NULL );
 303
 304                         /* find the overlay number, j */
 305                         for ( on2 = overlay_next( NULL ), j = 0; on2; on2 = overlay_next( on2 ), j++ ) {
 306                                 if ( on2->on_bi.bi_type == on->on_bi.bi_type ) {
 307                                         break;
 308                                 }
 309                         }
 310                         assert( on2 != NULL );
 311
 312                         snprintf( buf, sizeof( buf ),
 313                                 "cn=Overlay %d,%s",
 314                                 j, ms_overlay->mss_dn.bv_val );
 315                         ber_str2bv( buf, 0, 0, &bv );
 316                         attr_merge_normalize_one( e,
 317                                         slap_schema.si_ad_seeAlso,
 318                                         &bv, NULL );
 319                 }
 320         }
 321
 322         j = -1;
 323         LDAP_STAILQ_FOREACH( bi2, &backendInfo, bi_next ) {
 324                 j++;
 325                 if ( bi2->bi_type == bi->bi_type ) {
 326                         snprintf( buf, sizeof( buf ),
 327                                 "cn=Backend %d,%s",
 328                                 j, ms_backend->mss_dn.bv_val );
 329                         bv.bv_val = buf;
 330                         bv.bv_len = strlen( buf );
 331                         attr_merge_normalize_one( e,
 332                                         slap_schema.si_ad_seeAlso,
 333                                         &bv, NULL );
 334                         break;
 335                 }
 336         }
 337         /* we must find it! */
 338         assert( j >= 0 );
 339
 340         mp = monitor_entrypriv_create();
 341         if ( mp == NULL ) {
 342                 return -1;
 343         }
 344         e->e_private = ( void * )mp;
 345         mp->mp_info = ms;
 346         mp->mp_flags = ms->mss_flags
 347                 | MONITOR_F_SUB;
 348
 349         if ( monitor_cache_add( mi, e ) ) {
 350                 Debug( LDAP_DEBUG_ANY,
 351                         "monitor_subsys_database_init_one: "
 352                         "unable to add entry \"%s,%s\"\n",
 353                         rdn->bv_val, ms->mss_dn.bv_val, 0 );
 354                 return( -1 );
 355         }
 356
 357 #if defined(LDAP_SLAPI)
 358         monitor_back_add_plugin( mi, be, e );
 359 #endif /* defined(LDAP_SLAPI) */
 360
 361         if ( oi != NULL ) {
 362                 Entry           **ep_overlay = &mp->mp_children;
 363                 slap_overinst   *on = oi->oi_list;
 364
 365                 for ( ; on; on = on->on_next ) {
 366                         monitor_subsys_overlay_init_one( mi, be,
 367                                 ms, ms_overlay, on, e, ep_overlay );
 368                 }
 369         }
 370
 371         **epp = e;
 372         *epp = &mp->mp_next;
 373
 374         return 0;
 375 }
 376
 377 static int
 378 monitor_back_register_database_and_overlay(
 379         BackendDB               *be,
 380         struct slap_overinst    *on,
 381         struct berval           *ndn_out )
 382 {
 383         monitor_info_t          *mi;
 384         Entry                   *e_database, **ep;
 385         int                     i, rc;
 386         monitor_entry_t         *mp;
 387         monitor_subsys_t        *ms_backend,
 388                                 *ms_database,
 389                                 *ms_overlay;
 390         struct berval           bv;
 391         char                    buf[ BACKMONITOR_BUFSIZE ];
 392
 393         assert( be_monitor != NULL );
 394
 395         if ( !monitor_subsys_is_opened() ) {
 396                 if ( on ) {
 397                         return monitor_back_register_overlay_limbo( be, on, ndn_out );
 398
 399                 } else {
 400                         return monitor_back_register_database_limbo( be, ndn_out );
 401                 }
 402         }
 403
 404         mi = ( monitor_info_t * )be_monitor->be_private;
 405
 406         ms_backend = monitor_back_get_subsys( SLAPD_MONITOR_BACKEND_NAME );
 407         if ( ms_backend == NULL ) {
 408                 Debug( LDAP_DEBUG_ANY,
 409                         "monitor_back_register_database: "
 410                         "unable to get "
 411                         "\"" SLAPD_MONITOR_BACKEND_NAME "\" "
 412                         "subsystem\n",
 413                         0, 0, 0 );
 414                 return -1;
 415         }
 416
 417         ms_database = monitor_back_get_subsys( SLAPD_MONITOR_DATABASE_NAME );
 418         if ( ms_database == NULL ) {
 419                 Debug( LDAP_DEBUG_ANY,
 420                         "monitor_back_register_database: "
 421                         "unable to get "
 422                         "\"" SLAPD_MONITOR_DATABASE_NAME "\" "
 423                         "subsystem\n",
 424                         0, 0, 0 );
 425                 return -1;
 426         }
 427
 428         ms_overlay = monitor_back_get_subsys( SLAPD_MONITOR_OVERLAY_NAME );
 429         if ( ms_overlay == NULL ) {
 430                 Debug( LDAP_DEBUG_ANY,
 431                         "monitor_back_register_database: "
 432                         "unable to get "
 433                         "\"" SLAPD_MONITOR_OVERLAY_NAME "\" "
 434                         "subsystem\n",
 435                         0, 0, 0 );
 436                 return -1;
 437         }
 438
 439         if ( monitor_cache_get( mi, &ms_database->mss_ndn, &e_database ) ) {
 440                 Debug( LDAP_DEBUG_ANY,
 441                         "monitor_subsys_database_init: "
 442                         "unable to get entry \"%s\"\n",
 443                         ms_database->mss_ndn.bv_val, 0, 0 );
 444                 return( -1 );
 445         }
 446
 447         mp = ( monitor_entry_t * )e_database->e_private;
 448         for ( i = -1, ep = &mp->mp_children; *ep; i++ ) {
 449                 Attribute       *a;
 450
 451                 a = attr_find( (*ep)->e_attrs, slap_schema.si_ad_namingContexts );
 452                 if ( a ) {
 453                         int             j, k;
 454
 455                         /* FIXME: RFC 4512 defines namingContexts without an
 456                          *        equality matching rule, making comparisons
 457                          *        like this one tricky.  We use a_vals and
 458                          *        be_suffix instead for now.
 459                          */
 460                         for ( j = 0; !BER_BVISNULL( &a->a_vals[ j ] ); j++ ) {
 461                                 for ( k = 0; !BER_BVISNULL( &be->be_suffix[ k ] ); k++ ) {
 462                                         if ( dn_match( &a->a_vals[ j ],
 463                                                        &be->be_suffix[ k ] ) ) {
 464                                                 rc = 0;
 465                                                 goto done;
 466                                         }
 467                                 }
 468                         }
 469                 }
 470
 471                 mp = ( monitor_entry_t * )(*ep)->e_private;
 472
 473                 assert( mp != NULL );
 474                 ep = &mp->mp_next;
 475         }
 476
 477         bv.bv_val = buf;
 478         bv.bv_len = snprintf( buf, sizeof( buf ), "cn=Database %d", i );
 479         if ( bv.bv_len >= sizeof( buf ) ) {
 480                 rc = -1;
 481                 goto done;
 482         }
 483
 484         rc = monitor_subsys_database_init_one( mi, be,
 485                 ms_database, ms_backend, ms_overlay, &bv, e_database, &ep );
 486         if ( rc != 0 ) {
 487                 goto done;
 488         }
 489         /* database_init_one advanced ep past where we want.
 490          * But it stored the entry we want in mp->mp_next.
 491          */
 492         ep = &mp->mp_next;
 493
 494 done:;
 495         monitor_cache_release( mi, e_database );
 496         if ( rc == 0 && ndn_out && ep && *ep ) {
 497                 if ( on ) {
 498                         Entry *e_ov;
 499                         struct berval ov_type;
 500
 501                         ber_str2bv( on->on_bi.bi_type, 0, 0, &ov_type );
 502
 503                         mp = ( monitor_entry_t * ) (*ep)->e_private;
 504                         for ( e_ov = mp->mp_children; e_ov; ) {
 505                                 Attribute *a = attr_find( e_ov->e_attrs, mi->mi_ad_monitoredInfo );
 506
 507                                 if ( a != NULL && bvmatch( &a->a_nvals[ 0 ], &ov_type ) ) {
 508                                         *ndn_out = e_ov->e_nname;
 509                                         break;
 510                                 }
 511
 512                                 mp = ( monitor_entry_t * ) e_ov->e_private;
 513                                 e_ov = mp->mp_next;
 514                         }
 515
 516                 } else {
 517                         *ndn_out = (*ep)->e_nname;
 518                 }
 519         }
 520
 521         return rc;
 522 }
 523
 524 int
 525 monitor_back_register_database(
 526         BackendDB               *be,
 527         struct berval           *ndn_out )
 528 {
 529         return monitor_back_register_database_and_overlay( be, NULL, ndn_out );
 530 }
 531
 532 int
 533 monitor_back_register_overlay(
 534         BackendDB               *be,
 535         struct slap_overinst    *on,
 536         struct berval           *ndn_out )
 537 {
 538         return monitor_back_register_database_and_overlay( be, on, ndn_out );
 539 }
 540
 541 int
 542 monitor_subsys_database_init(
 543         BackendDB               *be,
 544         monitor_subsys_t        *ms )
 545 {
 546         monitor_info_t          *mi;
 547         Entry                   *e_database, **ep;
 548         int                     i, rc;
 549         monitor_entry_t         *mp;
 550         monitor_subsys_t        *ms_backend,
 551                                 *ms_overlay;
 552         struct berval           bv;
 553
 554         assert( be != NULL );
 555
 556         ms->mss_modify = monitor_subsys_database_modify;
 557
 558         mi = ( monitor_info_t * )be->be_private;
 559
 560         ms_backend = monitor_back_get_subsys( SLAPD_MONITOR_BACKEND_NAME );
 561         if ( ms_backend == NULL ) {
 562                 Debug( LDAP_DEBUG_ANY,
 563                         "monitor_subsys_database_init: "
 564                         "unable to get "
 565                         "\"" SLAPD_MONITOR_BACKEND_NAME "\" "
 566                         "subsystem\n",
 567                         0, 0, 0 );
 568                 return -1;
 569         }
 570
 571         ms_overlay = monitor_back_get_subsys( SLAPD_MONITOR_OVERLAY_NAME );
 572         if ( ms_overlay == NULL ) {
 573                 Debug( LDAP_DEBUG_ANY,
 574                         "monitor_subsys_database_init: "
 575                         "unable to get "
 576                         "\"" SLAPD_MONITOR_OVERLAY_NAME "\" "
 577                         "subsystem\n",
 578                         0, 0, 0 );
 579                 return -1;
 580         }
 581
 582         if ( monitor_cache_get( mi, &ms->mss_ndn, &e_database ) ) {
 583                 Debug( LDAP_DEBUG_ANY,
 584                         "monitor_subsys_database_init: "
 585                         "unable to get entry \"%s\"\n",
 586                         ms->mss_ndn.bv_val, 0, 0 );
 587                 return( -1 );
 588         }
 589
 590         (void)init_readOnly( mi, e_database, frontendDB->be_restrictops );
 591         (void)init_restrictedOperation( mi, e_database, frontendDB->be_restrictops );
 592
 593         mp = ( monitor_entry_t * )e_database->e_private;
 594         mp->mp_children = NULL;
 595         ep = &mp->mp_children;
 596
 597         BER_BVSTR( &bv, "cn=Frontend" );
 598         rc = monitor_subsys_database_init_one( mi, frontendDB,
 599                 ms, ms_backend, ms_overlay, &bv, e_database, &ep );
 600         if ( rc != 0 ) {
 601                 return rc;
 602         }
 603
 604         i = -1;
 605         LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
 606                 char            buf[ BACKMONITOR_BUFSIZE ];
 607
 608                 bv.bv_val = buf;
 609                 bv.bv_len = snprintf( buf, sizeof( buf ), "cn=Database %d", ++i );
 610                 if ( bv.bv_len >= sizeof( buf ) ) {
 611                         return -1;
 612                 }
 613
 614                 rc = monitor_subsys_database_init_one( mi, be,
 615                         ms, ms_backend, ms_overlay, &bv, e_database, &ep );
 616                 if ( rc != 0 ) {
 617                         return rc;
 618                 }
 619         }
 620
 621         monitor_cache_release( mi, e_database );
 622
 623         return( 0 );
 624 }
 625
 626 /*
 627  * v: array of values
 628  * cur: must not contain the tags corresponding to the values in v
 629  * delta: will contain the tags corresponding to the values in v
 630  */
 631 static int
 632 value_mask( BerVarray v, slap_mask_t cur, slap_mask_t *delta )
 633 {
 634         for ( ; !BER_BVISNULL( v ); v++ ) {
 635                 struct restricted_ops_t         *rops;
 636                 int                             i;
 637
 638                 if ( OID_LEADCHAR( v->bv_val[ 0 ] ) ) {
 639                         rops = restricted_exops;
 640
 641                 } else {
 642                         rops = restricted_ops;
 643                 }
 644
 645                 for ( i = 0; !BER_BVISNULL( &rops[ i ].op ); i++ ) {
 646                         if ( ber_bvstrcasecmp( v, &rops[ i ].op ) != 0 ) {
 647                                 continue;
 648                         }
 649
 650                         if ( rops[ i ].tag & *delta ) {
 651                                 return LDAP_OTHER;
 652                         }
 653
 654                         if ( rops[ i ].tag & cur ) {
 655                                 return LDAP_OTHER;
 656                         }
 657
 658                         cur |= rops[ i ].tag;
 659                         *delta |= rops[ i ].tag;
 660
 661                         break;
 662                 }
 663
 664                 if ( BER_BVISNULL( &rops[ i ].op ) ) {
 665                         return LDAP_INVALID_SYNTAX;
 666                 }
 667         }
 668
 669         return LDAP_SUCCESS;
 670 }
 671
 672 static int
 673 monitor_subsys_database_modify(
 674         Operation       *op,
 675         SlapReply       *rs,
 676         Entry           *e )
 677 {
 678         monitor_info_t  *mi = (monitor_info_t *)op->o_bd->be_private;
 679         int             rc = LDAP_OTHER;
 680         Attribute       *save_attrs, *a;
 681         Modifications   *ml;
 682         Backend         *be;
 683         int             ro_gotval = 1, i, n;
 684         slap_mask_t     rp_add = 0, rp_delete = 0, rp_cur;
 685         struct berval   *tf;
 686
 687         i = sscanf( e->e_nname.bv_val, "cn=database %d,", &n );
 688         if ( i != 1 ) {
 689                 return SLAP_CB_CONTINUE;
 690         }
 691
 692         if ( n < 0 || n >= nBackendDB ) {
 693                 rs->sr_text = "invalid database index";
 694                 return ( rs->sr_err = LDAP_NO_SUCH_OBJECT );
 695         }
 696
 697         LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
 698                 if ( n == 0 ) {
 699                         break;
 700                 }
 701                 n--;
 702         }
 703         /* do not allow some changes on back-monitor (needs work)... */
 704         if ( SLAP_MONITOR( be ) ) {
 705                 rs->sr_text = "no modifications allowed to monitor database entry";
 706                 return ( rs->sr_err = LDAP_UNWILLING_TO_PERFORM );
 707         }
 708
 709         rp_cur = be->be_restrictops;
 710
 711         save_attrs = e->e_attrs;
 712         e->e_attrs = attrs_dup( e->e_attrs );
 713
 714         for ( ml = op->orm_modlist; ml; ml = ml->sml_next ) {
 715                 Modification *mod = &ml->sml_mod;
 716
 717                 if ( mod->sm_desc == mi->mi_ad_readOnly ) {
 718                         int     val = -1;
 719
 720                         if ( mod->sm_values ) {
 721                                 if ( !BER_BVISNULL( &mod->sm_values[ 1 ] ) ) {
 722                                         rs->sr_text = "attempting to modify multiple values of single-valued attribute";
 723                                         rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 724                                         goto done;
 725                                 }
 726
 727                                 if ( bvmatch( &slap_true_bv, mod->sm_values )) {
 728                                         val = 1;
 729
 730                                 } else if ( bvmatch( &slap_false_bv, mod->sm_values )) {
 731                                         val = 0;
 732
 733                                 } else {
 734                                         assert( 0 );
 735                                         rc = rs->sr_err = LDAP_INVALID_SYNTAX;
 736                                         goto done;
 737                                 }
 738                         }
 739
 740                         switch ( mod->sm_op ) {
 741                         case LDAP_MOD_DELETE:
 742                                 if ( ro_gotval < 1 ) {
 743                                         rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 744                                         goto done;
 745                                 }
 746                                 ro_gotval--;
 747
 748                                 if ( val == 0 && ( rp_cur & SLAP_RESTRICT_OP_WRITES ) == SLAP_RESTRICT_OP_WRITES ) {
 749                                         rc = rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE;
 750                                         goto done;
 751                                 }
 752
 753                                 if ( val == 1 && ( rp_cur & SLAP_RESTRICT_OP_WRITES ) != SLAP_RESTRICT_OP_WRITES ) {
 754                                         rc = rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE;
 755                                         goto done;
 756                                 }
 757
 758                                 break;
 759
 760                         case LDAP_MOD_REPLACE:
 761                                 ro_gotval = 0;
 762                                 /* fall thru */
 763
 764                         case LDAP_MOD_ADD:
 765                                 if ( ro_gotval > 0 ) {
 766                                         rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 767                                         goto done;
 768                                 }
 769                                 ro_gotval++;
 770
 771                                 if ( val == 1 ) {
 772                                         rp_add |= (~rp_cur) & SLAP_RESTRICT_OP_WRITES;
 773                                         rp_cur |= SLAP_RESTRICT_OP_WRITES;
 774                                         rp_delete &= ~SLAP_RESTRICT_OP_WRITES;
 775
 776                                 } else if ( val == 0 ) {
 777                                         rp_delete |= rp_cur & SLAP_RESTRICT_OP_WRITES;
 778                                         rp_cur &= ~SLAP_RESTRICT_OP_WRITES;
 779                                         rp_add &= ~SLAP_RESTRICT_OP_WRITES;
 780                                 }
 781                                 break;
 782
 783                         default:
 784                                 rc = rs->sr_err = LDAP_OTHER;
 785                                 goto done;
 786                         }
 787
 788                 } else if ( mod->sm_desc == mi->mi_ad_restrictedOperation ) {
 789                         slap_mask_t     mask = 0;
 790
 791                         switch ( mod->sm_op ) {
 792                         case LDAP_MOD_DELETE:
 793                                 if ( mod->sm_values == NULL ) {
 794                                         rp_delete = rp_cur;
 795                                         rp_cur = 0;
 796                                         rp_add = 0;
 797                                         break;
 798                                 }
 799                                 rc = value_mask( mod->sm_values, ~rp_cur, &mask );
 800                                 if ( rc == LDAP_SUCCESS ) {
 801                                         rp_delete |= mask;
 802                                         rp_add &= ~mask;
 803                                         rp_cur &= ~mask;
 804
 805                                 } else if ( rc == LDAP_OTHER ) {
 806                                         rc = LDAP_NO_SUCH_ATTRIBUTE;
 807                                 }
 808                                 break;
 809
 810                         case LDAP_MOD_REPLACE:
 811                                 rp_delete = rp_cur;
 812                                 rp_cur = 0;
 813                                 rp_add = 0;
 814                                 /* fall thru */
 815
 816                         case LDAP_MOD_ADD:
 817                                 rc = value_mask( mod->sm_values, rp_cur, &mask );
 818                                 if ( rc == LDAP_SUCCESS ) {
 819                                         rp_add |= mask;
 820                                         rp_cur |= mask;
 821                                         rp_delete &= ~mask;
 822
 823                                 } else if ( rc == LDAP_OTHER ) {
 824                                         rc = rs->sr_err = LDAP_TYPE_OR_VALUE_EXISTS;
 825                                 }
 826                                 break;
 827
 828                         default:
 829                                 rc = rs->sr_err = LDAP_OTHER;
 830                                 break;
 831                         }
 832
 833                         if ( rc != LDAP_SUCCESS ) {
 834                                 goto done;
 835                         }
 836
 837                 } else if ( is_at_operational( mod->sm_desc->ad_type )) {
 838                 /* accept all operational attributes */
 839                         attr_delete( &e->e_attrs, mod->sm_desc );
 840                         rc = attr_merge( e, mod->sm_desc, mod->sm_values,
 841                                 mod->sm_nvalues );
 842                         if ( rc ) {
 843                                 rc = rs->sr_err = LDAP_OTHER;
 844                                 break;
 845                         }
 846
 847                 } else {
 848                         rc = rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
 849                         break;
 850                 }
 851         }
 852
 853         /* sanity checks: */
 854         if ( ro_gotval < 1 ) {
 855                 rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 856                 goto done;
 857         }
 858
 859         if ( ( rp_cur & SLAP_RESTRICT_OP_EXTENDED ) && ( rp_cur & SLAP_RESTRICT_EXOP_MASK ) ) {
 860                 rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 861                 goto done;
 862         }
 863
 864         if ( rp_delete & rp_add ) {
 865                 rc = rs->sr_err = LDAP_OTHER;
 866                 goto done;
 867         }
 868
 869         /* check current value of readOnly */
 870         if ( ( rp_cur & SLAP_RESTRICT_OP_WRITES ) == SLAP_RESTRICT_OP_WRITES ) {
 871                 tf = (struct berval *)&slap_true_bv;
 872
 873         } else {
 874                 tf = (struct berval *)&slap_false_bv;
 875         }
 876
 877         a = attr_find( e->e_attrs, mi->mi_ad_readOnly );
 878         if ( a == NULL ) {
 879                 rc = LDAP_OTHER;
 880                 goto done;
 881         }
 882
 883         if ( !bvmatch( &a->a_vals[ 0 ], tf ) ) {
 884                 attr_delete( &e->e_attrs, mi->mi_ad_readOnly );
 885                 rc = attr_merge_one( e, mi->mi_ad_readOnly, tf, tf );
 886         }
 887
 888         if ( rc == LDAP_SUCCESS ) {
 889                 if ( rp_delete ) {
 890                         if ( rp_delete == be->be_restrictops ) {
 891                                 attr_delete( &e->e_attrs, mi->mi_ad_restrictedOperation );
 892
 893                         } else {
 894                                 a = attr_find( e->e_attrs, mi->mi_ad_restrictedOperation );
 895                                 if ( a == NULL ) {
 896                                         rc = rs->sr_err = LDAP_OTHER;
 897                                         goto done;
 898                                 }
 899
 900                                 for ( i = 0; !BER_BVISNULL( &restricted_ops[ i ].op ); i++ ) {
 901                                         if ( rp_delete & restricted_ops[ i ].tag ) {
 902                                                 int     j;
 903
 904                                                 for ( j = 0; !BER_BVISNULL( &a->a_nvals[ j ] ); j++ ) {
 905                                                         int             k;
 906
 907                                                         if ( !bvmatch( &a->a_nvals[ j ], &restricted_ops[ i ].op ) ) {
 908                                                                 continue;
 909                                                         }
 910
 911                                                         ch_free( a->a_vals[ j ].bv_val );
 912                                                         ch_free( a->a_nvals[ j ].bv_val );
 913
 914                                                         for ( k = j + 1; !BER_BVISNULL( &a->a_nvals[ k ] ); k++ ) {
 915                                                                 a->a_vals[ k - 1 ] = a->a_vals[ k ];
 916                                                                 a->a_nvals[ k - 1 ] = a->a_nvals[ k ];
 917                                                         }
 918
 919                                                         BER_BVZERO( &a->a_vals[ k - 1 ] );
 920                                                         BER_BVZERO( &a->a_nvals[ k - 1 ] );
 921                                                         a->a_numvals--;
 922                                                 }
 923                                         }
 924                                 }
 925
 926                                 for ( i = 0; !BER_BVISNULL( &restricted_exops[ i ].op ); i++ ) {
 927                                         if ( rp_delete & restricted_exops[ i ].tag ) {
 928                                                 int     j;
 929
 930                                                 for ( j = 0; !BER_BVISNULL( &a->a_nvals[ j ] ); j++ ) {
 931                                                         int             k;
 932
 933                                                         if ( !bvmatch( &a->a_nvals[ j ], &restricted_exops[ i ].op ) ) {
 934                                                                 continue;
 935                                                         }
 936
 937                                                         ch_free( a->a_vals[ j ].bv_val );
 938                                                         ch_free( a->a_nvals[ j ].bv_val );
 939
 940                                                         for ( k = j + 1; !BER_BVISNULL( &a->a_nvals[ k ] ); k++ ) {
 941                                                                 a->a_vals[ k - 1 ] = a->a_vals[ k ];
 942                                                                 a->a_nvals[ k - 1 ] = a->a_nvals[ k ];
 943                                                         }
 944
 945                                                         BER_BVZERO( &a->a_vals[ k - 1 ] );
 946                                                         BER_BVZERO( &a->a_nvals[ k - 1 ] );
 947                                                         a->a_numvals--;
 948                                                 }
 949                                         }
 950                                 }
 951
 952                                 if ( a->a_vals == NULL ) {
 953                                         assert( a->a_numvals == 0 );
 954
 955                                         attr_delete( &e->e_attrs, mi->mi_ad_restrictedOperation );
 956                                 }
 957                         }
 958                 }
 959
 960                 if ( rp_add ) {
 961                         for ( i = 0; !BER_BVISNULL( &restricted_ops[ i ].op ); i++ ) {
 962                                 if ( rp_add & restricted_ops[ i ].tag ) {
 963                                         attr_merge_one( e, mi->mi_ad_restrictedOperation,
 964                                                         &restricted_ops[ i ].op,
 965                                                         &restricted_ops[ i ].op );
 966                                 }
 967                         }
 968
 969                         for ( i = 0; !BER_BVISNULL( &restricted_exops[ i ].op ); i++ ) {
 970                                 if ( rp_add & restricted_exops[ i ].tag ) {
 971                                         attr_merge_one( e, mi->mi_ad_restrictedOperation,
 972                                                         &restricted_exops[ i ].op,
 973                                                         &restricted_exops[ i ].op );
 974                                 }
 975                         }
 976                 }
 977         }
 978
 979         be->be_restrictops = rp_cur;
 980
 981 done:;
 982         if ( rc == LDAP_SUCCESS ) {
 983                 attrs_free( save_attrs );
 984                 rc = SLAP_CB_CONTINUE;
 985
 986         } else {
 987                 Attribute *tmp = e->e_attrs;
 988                 e->e_attrs = save_attrs;
 989                 attrs_free( tmp );
 990         }
 991         return rc;
 992 }
 993
 994 #if defined(LDAP_SLAPI)
 995 static int
 996 monitor_back_add_plugin( monitor_info_t *mi, Backend *be, Entry *e_database )
 997 {
 998         Slapi_PBlock    *pCurrentPB;
 999         int             i, rc = LDAP_SUCCESS;
1000
1001         if ( slapi_int_pblock_get_first( be, &pCurrentPB ) != LDAP_SUCCESS ) {
1002                 /*
1003                  * LDAP_OTHER is returned if no plugins are installed
1004                  */
1005                 rc = LDAP_OTHER;
1006                 goto done;
1007         }
1008
1009         i = 0;
1010         do {
1011                 Slapi_PluginDesc        *srchdesc;
1012                 char                    buf[ BACKMONITOR_BUFSIZE ];
1013                 struct berval           bv;
1014
1015                 rc = slapi_pblock_get( pCurrentPB, SLAPI_PLUGIN_DESCRIPTION,
1016                                 &srchdesc );
1017                 if ( rc != LDAP_SUCCESS ) {
1018                         goto done;
1019                 }
1020                 if ( srchdesc ) {
1021                         snprintf( buf, sizeof(buf),
1022                                         "plugin %d name: %s; "
1023                                         "vendor: %s; "
1024                                         "version: %s; "
1025                                         "description: %s",
1026                                         i,
1027                                         srchdesc->spd_id,
1028                                         srchdesc->spd_vendor,
1029                                         srchdesc->spd_version,
1030                                         srchdesc->spd_description );
1031                 } else {
1032                         snprintf( buf, sizeof(buf),
1033                                         "plugin %d name: <no description available>", i );
1034                 }
1035
1036                 ber_str2bv( buf, 0, 0, &bv );
1037                 attr_merge_normalize_one( e_database,
1038                                 mi->mi_ad_monitoredInfo, &bv, NULL );
1039
1040                 i++;
1041
1042         } while ( ( slapi_int_pblock_get_next( &pCurrentPB ) == LDAP_SUCCESS )
1043                         && ( pCurrentPB != NULL ) );
1044
1045 done:
1046         return rc;
1047 }
1048 #endif /* defined(LDAP_SLAPI) */