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 2001-2015 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 ( be->be_suffix == NULL ) {
 220                 Debug( LDAP_DEBUG_ANY,
 221                         "monitor_subsys_database_init_one: "
 222                         "missing suffix for %s\n",
 223                         rdnval, 0, 0 );
 224                 return( -1 );
 225         }
 226
 227         if ( overlay_is_over( be ) ) {
 228                 oi = (slap_overinfo *)be->bd_info->bi_private;
 229                 bi = oi->oi_orig;
 230         }
 231
 232         e = monitor_entry_stub( &ms->mss_dn, &ms->mss_ndn, rdn,
 233                 mi->mi_oc_monitoredObject, NULL, NULL );
 234
 235         if ( e == NULL ) {
 236                 Debug( LDAP_DEBUG_ANY,
 237                         "monitor_subsys_database_init_one: "
 238                         "unable to create entry \"%s,%s\"\n",
 239                         rdn->bv_val, ms->mss_dn.bv_val, 0 );
 240                 return( -1 );
 241         }
 242
 243         ber_str2bv( bi->bi_type, 0, 0, &bv );
 244         attr_merge_normalize_one( e, mi->mi_ad_monitoredInfo, &bv, NULL );
 245         attr_merge_one( e, mi->mi_ad_monitorIsShadow,
 246                 SLAP_SHADOW( be ) ? (struct berval *)&slap_true_bv :
 247                         (struct berval *)&slap_false_bv, NULL );
 248
 249         if ( SLAP_MONITOR( be ) ) {
 250                 attr_merge( e, slap_schema.si_ad_monitorContext,
 251                                 be->be_suffix, be->be_nsuffix );
 252                 attr_merge( e_database, slap_schema.si_ad_monitorContext,
 253                                 be->be_suffix, be->be_nsuffix );
 254
 255         } else {
 256                 attr_merge( e, slap_schema.si_ad_namingContexts,
 257                         be->be_suffix, NULL );
 258                 attr_merge( e_database, slap_schema.si_ad_namingContexts,
 259                         be->be_suffix, NULL );
 260
 261                 if ( SLAP_GLUE_SUBORDINATE( be ) ) {
 262                         BackendDB *sup_be = select_backend( &be->be_nsuffix[ 0 ], 1 );
 263                         if ( sup_be == NULL ) {
 264                                 Debug( LDAP_DEBUG_ANY,
 265                                         "monitor_subsys_database_init: "
 266                                         "unable to get superior for %s\n",
 267                                         be->be_suffix[ 0 ].bv_val, 0, 0 );
 268
 269                         } else {
 270                                 attr_merge( e, mi->mi_ad_monitorSuperiorDN,
 271                                         sup_be->be_suffix, sup_be->be_nsuffix );
 272                         }
 273                 }
 274         }
 275
 276         (void)init_readOnly( mi, e, be->be_restrictops );
 277         (void)init_restrictedOperation( mi, e, be->be_restrictops );
 278
 279         if ( SLAP_SHADOW( be ) && be->be_update_refs ) {
 280                 attr_merge_normalize( e, mi->mi_ad_monitorUpdateRef,
 281                                 be->be_update_refs, NULL );
 282         }
 283
 284         if ( oi != NULL ) {
 285                 slap_overinst   *on = oi->oi_list,
 286                                 *on1 = on;
 287
 288                 for ( ; on; on = on->on_next ) {
 289                         slap_overinst           *on2;
 290
 291                         for ( on2 = on1; on2 != on; on2 = on2->on_next ) {
 292                                 if ( on2->on_bi.bi_type == on->on_bi.bi_type ) {
 293                                         break;
 294                                 }
 295                         }
 296
 297                         if ( on2 != on ) {
 298                                 break;
 299                         }
 300
 301                         ber_str2bv( on->on_bi.bi_type, 0, 0, &bv );
 302                         attr_merge_normalize_one( e, mi->mi_ad_monitorOverlay,
 303                                         &bv, NULL );
 304
 305                         /* find the overlay number, j */
 306                         for ( on2 = overlay_next( NULL ), j = 0; on2; on2 = overlay_next( on2 ), j++ ) {
 307                                 if ( on2->on_bi.bi_type == on->on_bi.bi_type ) {
 308                                         break;
 309                                 }
 310                         }
 311                         assert( on2 != NULL );
 312
 313                         snprintf( buf, sizeof( buf ),
 314                                 "cn=Overlay %d,%s",
 315                                 j, ms_overlay->mss_dn.bv_val );
 316                         ber_str2bv( buf, 0, 0, &bv );
 317                         attr_merge_normalize_one( e,
 318                                         slap_schema.si_ad_seeAlso,
 319                                         &bv, NULL );
 320                 }
 321         }
 322
 323         j = -1;
 324         LDAP_STAILQ_FOREACH( bi2, &backendInfo, bi_next ) {
 325                 j++;
 326                 if ( bi2->bi_type == bi->bi_type ) {
 327                         snprintf( buf, sizeof( buf ),
 328                                 "cn=Backend %d,%s",
 329                                 j, ms_backend->mss_dn.bv_val );
 330                         bv.bv_val = buf;
 331                         bv.bv_len = strlen( buf );
 332                         attr_merge_normalize_one( e,
 333                                         slap_schema.si_ad_seeAlso,
 334                                         &bv, NULL );
 335                         break;
 336                 }
 337         }
 338         /* we must find it! */
 339         assert( j >= 0 );
 340
 341         mp = monitor_entrypriv_create();
 342         if ( mp == NULL ) {
 343                 return -1;
 344         }
 345         e->e_private = ( void * )mp;
 346         mp->mp_info = ms;
 347         mp->mp_flags = ms->mss_flags
 348                 | MONITOR_F_SUB;
 349
 350         if ( monitor_cache_add( mi, e ) ) {
 351                 Debug( LDAP_DEBUG_ANY,
 352                         "monitor_subsys_database_init_one: "
 353                         "unable to add entry \"%s,%s\"\n",
 354                         rdn->bv_val, ms->mss_dn.bv_val, 0 );
 355                 return( -1 );
 356         }
 357
 358 #if defined(LDAP_SLAPI)
 359         monitor_back_add_plugin( mi, be, e );
 360 #endif /* defined(LDAP_SLAPI) */
 361
 362         if ( oi != NULL ) {
 363                 Entry           **ep_overlay = &mp->mp_children;
 364                 slap_overinst   *on = oi->oi_list;
 365
 366                 for ( ; on; on = on->on_next ) {
 367                         monitor_subsys_overlay_init_one( mi, be,
 368                                 ms, ms_overlay, on, e, ep_overlay );
 369                 }
 370         }
 371
 372         **epp = e;
 373         *epp = &mp->mp_next;
 374
 375         return 0;
 376 }
 377
 378 static int
 379 monitor_back_register_database_and_overlay(
 380         BackendDB               *be,
 381         struct slap_overinst    *on,
 382         struct berval           *ndn_out )
 383 {
 384         monitor_info_t          *mi;
 385         Entry                   *e_database, **ep;
 386         int                     i, rc;
 387         monitor_entry_t         *mp;
 388         monitor_subsys_t        *ms_backend,
 389                                 *ms_database,
 390                                 *ms_overlay;
 391         struct berval           bv;
 392         char                    buf[ BACKMONITOR_BUFSIZE ];
 393
 394         assert( be_monitor != NULL );
 395
 396         if ( !monitor_subsys_is_opened() ) {
 397                 if ( on ) {
 398                         return monitor_back_register_overlay_limbo( be, on, ndn_out );
 399
 400                 } else {
 401                         return monitor_back_register_database_limbo( be, ndn_out );
 402                 }
 403         }
 404
 405         mi = ( monitor_info_t * )be_monitor->be_private;
 406
 407         ms_backend = monitor_back_get_subsys( SLAPD_MONITOR_BACKEND_NAME );
 408         if ( ms_backend == NULL ) {
 409                 Debug( LDAP_DEBUG_ANY,
 410                         "monitor_back_register_database: "
 411                         "unable to get "
 412                         "\"" SLAPD_MONITOR_BACKEND_NAME "\" "
 413                         "subsystem\n",
 414                         0, 0, 0 );
 415                 return -1;
 416         }
 417
 418         ms_database = monitor_back_get_subsys( SLAPD_MONITOR_DATABASE_NAME );
 419         if ( ms_database == NULL ) {
 420                 Debug( LDAP_DEBUG_ANY,
 421                         "monitor_back_register_database: "
 422                         "unable to get "
 423                         "\"" SLAPD_MONITOR_DATABASE_NAME "\" "
 424                         "subsystem\n",
 425                         0, 0, 0 );
 426                 return -1;
 427         }
 428
 429         ms_overlay = monitor_back_get_subsys( SLAPD_MONITOR_OVERLAY_NAME );
 430         if ( ms_overlay == NULL ) {
 431                 Debug( LDAP_DEBUG_ANY,
 432                         "monitor_back_register_database: "
 433                         "unable to get "
 434                         "\"" SLAPD_MONITOR_OVERLAY_NAME "\" "
 435                         "subsystem\n",
 436                         0, 0, 0 );
 437                 return -1;
 438         }
 439
 440         if ( monitor_cache_get( mi, &ms_database->mss_ndn, &e_database ) ) {
 441                 Debug( LDAP_DEBUG_ANY,
 442                         "monitor_subsys_database_init: "
 443                         "unable to get entry \"%s\"\n",
 444                         ms_database->mss_ndn.bv_val, 0, 0 );
 445                 return( -1 );
 446         }
 447
 448         mp = ( monitor_entry_t * )e_database->e_private;
 449         for ( i = -1, ep = &mp->mp_children; *ep; i++ ) {
 450                 Attribute       *a;
 451
 452                 a = attr_find( (*ep)->e_attrs, slap_schema.si_ad_namingContexts );
 453                 if ( a ) {
 454                         int             j, k;
 455
 456                         /* FIXME: RFC 4512 defines namingContexts without an
 457                          *        equality matching rule, making comparisons
 458                          *        like this one tricky.  We use a_vals and
 459                          *        be_suffix instead for now.
 460                          */
 461                         for ( j = 0; !BER_BVISNULL( &a->a_vals[ j ] ); j++ ) {
 462                                 for ( k = 0; !BER_BVISNULL( &be->be_suffix[ k ] ); k++ ) {
 463                                         if ( dn_match( &a->a_vals[ j ],
 464                                                        &be->be_suffix[ k ] ) ) {
 465                                                 rc = 0;
 466                                                 goto done;
 467                                         }
 468                                 }
 469                         }
 470                 }
 471
 472                 mp = ( monitor_entry_t * )(*ep)->e_private;
 473
 474                 assert( mp != NULL );
 475                 ep = &mp->mp_next;
 476         }
 477
 478         bv.bv_val = buf;
 479         bv.bv_len = snprintf( buf, sizeof( buf ), "cn=Database %d", i );
 480         if ( bv.bv_len >= sizeof( buf ) ) {
 481                 rc = -1;
 482                 goto done;
 483         }
 484
 485         rc = monitor_subsys_database_init_one( mi, be,
 486                 ms_database, ms_backend, ms_overlay, &bv, e_database, &ep );
 487         if ( rc != 0 ) {
 488                 goto done;
 489         }
 490         /* database_init_one advanced ep past where we want.
 491          * But it stored the entry we want in mp->mp_next.
 492          */
 493         ep = &mp->mp_next;
 494
 495 done:;
 496         monitor_cache_release( mi, e_database );
 497         if ( rc == 0 && ndn_out && ep && *ep ) {
 498                 if ( on ) {
 499                         Entry *e_ov;
 500                         struct berval ov_type;
 501
 502                         ber_str2bv( on->on_bi.bi_type, 0, 0, &ov_type );
 503
 504                         mp = ( monitor_entry_t * ) (*ep)->e_private;
 505                         for ( e_ov = mp->mp_children; e_ov; ) {
 506                                 Attribute *a = attr_find( e_ov->e_attrs, mi->mi_ad_monitoredInfo );
 507
 508                                 if ( a != NULL && bvmatch( &a->a_nvals[ 0 ], &ov_type ) ) {
 509                                         *ndn_out = e_ov->e_nname;
 510                                         break;
 511                                 }
 512
 513                                 mp = ( monitor_entry_t * ) e_ov->e_private;
 514                                 e_ov = mp->mp_next;
 515                         }
 516
 517                 } else {
 518                         *ndn_out = (*ep)->e_nname;
 519                 }
 520         }
 521
 522         return rc;
 523 }
 524
 525 int
 526 monitor_back_register_database(
 527         BackendDB               *be,
 528         struct berval           *ndn_out )
 529 {
 530         return monitor_back_register_database_and_overlay( be, NULL, ndn_out );
 531 }
 532
 533 int
 534 monitor_back_register_overlay(
 535         BackendDB               *be,
 536         struct slap_overinst    *on,
 537         struct berval           *ndn_out )
 538 {
 539         return monitor_back_register_database_and_overlay( be, on, ndn_out );
 540 }
 541
 542 int
 543 monitor_subsys_database_init(
 544         BackendDB               *be,
 545         monitor_subsys_t        *ms )
 546 {
 547         monitor_info_t          *mi;
 548         Entry                   *e_database, **ep;
 549         int                     i, rc;
 550         monitor_entry_t         *mp;
 551         monitor_subsys_t        *ms_backend,
 552                                 *ms_overlay;
 553         struct berval           bv;
 554
 555         assert( be != NULL );
 556
 557         ms->mss_modify = monitor_subsys_database_modify;
 558
 559         mi = ( monitor_info_t * )be->be_private;
 560
 561         ms_backend = monitor_back_get_subsys( SLAPD_MONITOR_BACKEND_NAME );
 562         if ( ms_backend == NULL ) {
 563                 Debug( LDAP_DEBUG_ANY,
 564                         "monitor_subsys_database_init: "
 565                         "unable to get "
 566                         "\"" SLAPD_MONITOR_BACKEND_NAME "\" "
 567                         "subsystem\n",
 568                         0, 0, 0 );
 569                 return -1;
 570         }
 571
 572         ms_overlay = monitor_back_get_subsys( SLAPD_MONITOR_OVERLAY_NAME );
 573         if ( ms_overlay == NULL ) {
 574                 Debug( LDAP_DEBUG_ANY,
 575                         "monitor_subsys_database_init: "
 576                         "unable to get "
 577                         "\"" SLAPD_MONITOR_OVERLAY_NAME "\" "
 578                         "subsystem\n",
 579                         0, 0, 0 );
 580                 return -1;
 581         }
 582
 583         if ( monitor_cache_get( mi, &ms->mss_ndn, &e_database ) ) {
 584                 Debug( LDAP_DEBUG_ANY,
 585                         "monitor_subsys_database_init: "
 586                         "unable to get entry \"%s\"\n",
 587                         ms->mss_ndn.bv_val, 0, 0 );
 588                 return( -1 );
 589         }
 590
 591         (void)init_readOnly( mi, e_database, frontendDB->be_restrictops );
 592         (void)init_restrictedOperation( mi, e_database, frontendDB->be_restrictops );
 593
 594         mp = ( monitor_entry_t * )e_database->e_private;
 595         mp->mp_children = NULL;
 596         ep = &mp->mp_children;
 597
 598         BER_BVSTR( &bv, "cn=Frontend" );
 599         rc = monitor_subsys_database_init_one( mi, frontendDB,
 600                 ms, ms_backend, ms_overlay, &bv, e_database, &ep );
 601         if ( rc != 0 ) {
 602                 return rc;
 603         }
 604
 605         i = -1;
 606         LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
 607                 char            buf[ BACKMONITOR_BUFSIZE ];
 608
 609                 bv.bv_val = buf;
 610                 bv.bv_len = snprintf( buf, sizeof( buf ), "cn=Database %d", ++i );
 611                 if ( bv.bv_len >= sizeof( buf ) ) {
 612                         return -1;
 613                 }
 614
 615                 rc = monitor_subsys_database_init_one( mi, be,
 616                         ms, ms_backend, ms_overlay, &bv, e_database, &ep );
 617                 if ( rc != 0 ) {
 618                         return rc;
 619                 }
 620         }
 621
 622         monitor_cache_release( mi, e_database );
 623
 624         return( 0 );
 625 }
 626
 627 /*
 628  * v: array of values
 629  * cur: must not contain the tags corresponding to the values in v
 630  * delta: will contain the tags corresponding to the values in v
 631  */
 632 static int
 633 value_mask( BerVarray v, slap_mask_t cur, slap_mask_t *delta )
 634 {
 635         for ( ; !BER_BVISNULL( v ); v++ ) {
 636                 struct restricted_ops_t         *rops;
 637                 int                             i;
 638
 639                 if ( OID_LEADCHAR( v->bv_val[ 0 ] ) ) {
 640                         rops = restricted_exops;
 641
 642                 } else {
 643                         rops = restricted_ops;
 644                 }
 645
 646                 for ( i = 0; !BER_BVISNULL( &rops[ i ].op ); i++ ) {
 647                         if ( ber_bvstrcasecmp( v, &rops[ i ].op ) != 0 ) {
 648                                 continue;
 649                         }
 650
 651                         if ( rops[ i ].tag & *delta ) {
 652                                 return LDAP_OTHER;
 653                         }
 654
 655                         if ( rops[ i ].tag & cur ) {
 656                                 return LDAP_OTHER;
 657                         }
 658
 659                         cur |= rops[ i ].tag;
 660                         *delta |= rops[ i ].tag;
 661
 662                         break;
 663                 }
 664
 665                 if ( BER_BVISNULL( &rops[ i ].op ) ) {
 666                         return LDAP_INVALID_SYNTAX;
 667                 }
 668         }
 669
 670         return LDAP_SUCCESS;
 671 }
 672
 673 static int
 674 monitor_subsys_database_modify(
 675         Operation       *op,
 676         SlapReply       *rs,
 677         Entry           *e )
 678 {
 679         monitor_info_t  *mi = (monitor_info_t *)op->o_bd->be_private;
 680         int             rc = LDAP_OTHER;
 681         Attribute       *save_attrs, *a;
 682         Modifications   *ml;
 683         Backend         *be;
 684         int             ro_gotval = 1, i, n;
 685         slap_mask_t     rp_add = 0, rp_delete = 0, rp_cur;
 686         struct berval   *tf;
 687
 688         i = sscanf( e->e_nname.bv_val, "cn=database %d,", &n );
 689         if ( i != 1 ) {
 690                 return SLAP_CB_CONTINUE;
 691         }
 692
 693         if ( n < 0 || n >= nBackendDB ) {
 694                 rs->sr_text = "invalid database index";
 695                 return ( rs->sr_err = LDAP_NO_SUCH_OBJECT );
 696         }
 697
 698         LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
 699                 if ( n == 0 ) {
 700                         break;
 701                 }
 702                 n--;
 703         }
 704         /* do not allow some changes on back-monitor (needs work)... */
 705         if ( SLAP_MONITOR( be ) ) {
 706                 rs->sr_text = "no modifications allowed to monitor database entry";
 707                 return ( rs->sr_err = LDAP_UNWILLING_TO_PERFORM );
 708         }
 709
 710         rp_cur = be->be_restrictops;
 711
 712         save_attrs = e->e_attrs;
 713         e->e_attrs = attrs_dup( e->e_attrs );
 714
 715         for ( ml = op->orm_modlist; ml; ml = ml->sml_next ) {
 716                 Modification *mod = &ml->sml_mod;
 717
 718                 if ( mod->sm_desc == mi->mi_ad_readOnly ) {
 719                         int     val = -1;
 720
 721                         if ( mod->sm_values ) {
 722                                 if ( !BER_BVISNULL( &mod->sm_values[ 1 ] ) ) {
 723                                         rs->sr_text = "attempting to modify multiple values of single-valued attribute";
 724                                         rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 725                                         goto done;
 726                                 }
 727
 728                                 if ( bvmatch( &slap_true_bv, mod->sm_values )) {
 729                                         val = 1;
 730
 731                                 } else if ( bvmatch( &slap_false_bv, mod->sm_values )) {
 732                                         val = 0;
 733
 734                                 } else {
 735                                         assert( 0 );
 736                                         rc = rs->sr_err = LDAP_INVALID_SYNTAX;
 737                                         goto done;
 738                                 }
 739                         }
 740
 741                         switch ( mod->sm_op ) {
 742                         case LDAP_MOD_DELETE:
 743                                 if ( ro_gotval < 1 ) {
 744                                         rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 745                                         goto done;
 746                                 }
 747                                 ro_gotval--;
 748
 749                                 if ( val == 0 && ( rp_cur & SLAP_RESTRICT_OP_WRITES ) == SLAP_RESTRICT_OP_WRITES ) {
 750                                         rc = rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE;
 751                                         goto done;
 752                                 }
 753
 754                                 if ( val == 1 && ( rp_cur & SLAP_RESTRICT_OP_WRITES ) != SLAP_RESTRICT_OP_WRITES ) {
 755                                         rc = rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE;
 756                                         goto done;
 757                                 }
 758
 759                                 break;
 760
 761                         case LDAP_MOD_REPLACE:
 762                                 ro_gotval = 0;
 763                                 /* fall thru */
 764
 765                         case LDAP_MOD_ADD:
 766                                 if ( ro_gotval > 0 ) {
 767                                         rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 768                                         goto done;
 769                                 }
 770                                 ro_gotval++;
 771
 772                                 if ( val == 1 ) {
 773                                         rp_add |= (~rp_cur) & SLAP_RESTRICT_OP_WRITES;
 774                                         rp_cur |= SLAP_RESTRICT_OP_WRITES;
 775                                         rp_delete &= ~SLAP_RESTRICT_OP_WRITES;
 776
 777                                 } else if ( val == 0 ) {
 778                                         rp_delete |= rp_cur & SLAP_RESTRICT_OP_WRITES;
 779                                         rp_cur &= ~SLAP_RESTRICT_OP_WRITES;
 780                                         rp_add &= ~SLAP_RESTRICT_OP_WRITES;
 781                                 }
 782                                 break;
 783
 784                         default:
 785                                 rc = rs->sr_err = LDAP_OTHER;
 786                                 goto done;
 787                         }
 788
 789                 } else if ( mod->sm_desc == mi->mi_ad_restrictedOperation ) {
 790                         slap_mask_t     mask = 0;
 791
 792                         switch ( mod->sm_op ) {
 793                         case LDAP_MOD_DELETE:
 794                                 if ( mod->sm_values == NULL ) {
 795                                         rp_delete = rp_cur;
 796                                         rp_cur = 0;
 797                                         rp_add = 0;
 798                                         break;
 799                                 }
 800                                 rc = value_mask( mod->sm_values, ~rp_cur, &mask );
 801                                 if ( rc == LDAP_SUCCESS ) {
 802                                         rp_delete |= mask;
 803                                         rp_add &= ~mask;
 804                                         rp_cur &= ~mask;
 805
 806                                 } else if ( rc == LDAP_OTHER ) {
 807                                         rc = LDAP_NO_SUCH_ATTRIBUTE;
 808                                 }
 809                                 break;
 810
 811                         case LDAP_MOD_REPLACE:
 812                                 rp_delete = rp_cur;
 813                                 rp_cur = 0;
 814                                 rp_add = 0;
 815                                 /* fall thru */
 816
 817                         case LDAP_MOD_ADD:
 818                                 rc = value_mask( mod->sm_values, rp_cur, &mask );
 819                                 if ( rc == LDAP_SUCCESS ) {
 820                                         rp_add |= mask;
 821                                         rp_cur |= mask;
 822                                         rp_delete &= ~mask;
 823
 824                                 } else if ( rc == LDAP_OTHER ) {
 825                                         rc = rs->sr_err = LDAP_TYPE_OR_VALUE_EXISTS;
 826                                 }
 827                                 break;
 828
 829                         default:
 830                                 rc = rs->sr_err = LDAP_OTHER;
 831                                 break;
 832                         }
 833
 834                         if ( rc != LDAP_SUCCESS ) {
 835                                 goto done;
 836                         }
 837
 838                 } else if ( is_at_operational( mod->sm_desc->ad_type )) {
 839                 /* accept all operational attributes */
 840                         attr_delete( &e->e_attrs, mod->sm_desc );
 841                         rc = attr_merge( e, mod->sm_desc, mod->sm_values,
 842                                 mod->sm_nvalues );
 843                         if ( rc ) {
 844                                 rc = rs->sr_err = LDAP_OTHER;
 845                                 break;
 846                         }
 847
 848                 } else {
 849                         rc = rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
 850                         break;
 851                 }
 852         }
 853
 854         /* sanity checks: */
 855         if ( ro_gotval < 1 ) {
 856                 rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 857                 goto done;
 858         }
 859
 860         if ( ( rp_cur & SLAP_RESTRICT_OP_EXTENDED ) && ( rp_cur & SLAP_RESTRICT_EXOP_MASK ) ) {
 861                 rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 862                 goto done;
 863         }
 864
 865         if ( rp_delete & rp_add ) {
 866                 rc = rs->sr_err = LDAP_OTHER;
 867                 goto done;
 868         }
 869
 870         /* check current value of readOnly */
 871         if ( ( rp_cur & SLAP_RESTRICT_OP_WRITES ) == SLAP_RESTRICT_OP_WRITES ) {
 872                 tf = (struct berval *)&slap_true_bv;
 873
 874         } else {
 875                 tf = (struct berval *)&slap_false_bv;
 876         }
 877
 878         a = attr_find( e->e_attrs, mi->mi_ad_readOnly );
 879         if ( a == NULL ) {
 880                 rc = LDAP_OTHER;
 881                 goto done;
 882         }
 883
 884         if ( !bvmatch( &a->a_vals[ 0 ], tf ) ) {
 885                 attr_delete( &e->e_attrs, mi->mi_ad_readOnly );
 886                 rc = attr_merge_one( e, mi->mi_ad_readOnly, tf, tf );
 887         }
 888
 889         if ( rc == LDAP_SUCCESS ) {
 890                 if ( rp_delete ) {
 891                         if ( rp_delete == be->be_restrictops ) {
 892                                 attr_delete( &e->e_attrs, mi->mi_ad_restrictedOperation );
 893
 894                         } else {
 895                                 a = attr_find( e->e_attrs, mi->mi_ad_restrictedOperation );
 896                                 if ( a == NULL ) {
 897                                         rc = rs->sr_err = LDAP_OTHER;
 898                                         goto done;
 899                                 }
 900
 901                                 for ( i = 0; !BER_BVISNULL( &restricted_ops[ i ].op ); i++ ) {
 902                                         if ( rp_delete & restricted_ops[ i ].tag ) {
 903                                                 int     j;
 904
 905                                                 for ( j = 0; !BER_BVISNULL( &a->a_nvals[ j ] ); j++ ) {
 906                                                         int             k;
 907
 908                                                         if ( !bvmatch( &a->a_nvals[ j ], &restricted_ops[ i ].op ) ) {
 909                                                                 continue;
 910                                                         }
 911
 912                                                         ch_free( a->a_vals[ j ].bv_val );
 913                                                         ch_free( a->a_nvals[ j ].bv_val );
 914
 915                                                         for ( k = j + 1; !BER_BVISNULL( &a->a_nvals[ k ] ); k++ ) {
 916                                                                 a->a_vals[ k - 1 ] = a->a_vals[ k ];
 917                                                                 a->a_nvals[ k - 1 ] = a->a_nvals[ k ];
 918                                                         }
 919
 920                                                         BER_BVZERO( &a->a_vals[ k - 1 ] );
 921                                                         BER_BVZERO( &a->a_nvals[ k - 1 ] );
 922                                                         a->a_numvals--;
 923                                                 }
 924                                         }
 925                                 }
 926
 927                                 for ( i = 0; !BER_BVISNULL( &restricted_exops[ i ].op ); i++ ) {
 928                                         if ( rp_delete & restricted_exops[ i ].tag ) {
 929                                                 int     j;
 930
 931                                                 for ( j = 0; !BER_BVISNULL( &a->a_nvals[ j ] ); j++ ) {
 932                                                         int             k;
 933
 934                                                         if ( !bvmatch( &a->a_nvals[ j ], &restricted_exops[ i ].op ) ) {
 935                                                                 continue;
 936                                                         }
 937
 938                                                         ch_free( a->a_vals[ j ].bv_val );
 939                                                         ch_free( a->a_nvals[ j ].bv_val );
 940
 941                                                         for ( k = j + 1; !BER_BVISNULL( &a->a_nvals[ k ] ); k++ ) {
 942                                                                 a->a_vals[ k - 1 ] = a->a_vals[ k ];
 943                                                                 a->a_nvals[ k - 1 ] = a->a_nvals[ k ];
 944                                                         }
 945
 946                                                         BER_BVZERO( &a->a_vals[ k - 1 ] );
 947                                                         BER_BVZERO( &a->a_nvals[ k - 1 ] );
 948                                                         a->a_numvals--;
 949                                                 }
 950                                         }
 951                                 }
 952
 953                                 if ( a->a_vals == NULL ) {
 954                                         assert( a->a_numvals == 0 );
 955
 956                                         attr_delete( &e->e_attrs, mi->mi_ad_restrictedOperation );
 957                                 }
 958                         }
 959                 }
 960
 961                 if ( rp_add ) {
 962                         for ( i = 0; !BER_BVISNULL( &restricted_ops[ i ].op ); i++ ) {
 963                                 if ( rp_add & restricted_ops[ i ].tag ) {
 964                                         attr_merge_one( e, mi->mi_ad_restrictedOperation,
 965                                                         &restricted_ops[ i ].op,
 966                                                         &restricted_ops[ i ].op );
 967                                 }
 968                         }
 969
 970                         for ( i = 0; !BER_BVISNULL( &restricted_exops[ i ].op ); i++ ) {
 971                                 if ( rp_add & restricted_exops[ i ].tag ) {
 972                                         attr_merge_one( e, mi->mi_ad_restrictedOperation,
 973                                                         &restricted_exops[ i ].op,
 974                                                         &restricted_exops[ i ].op );
 975                                 }
 976                         }
 977                 }
 978         }
 979
 980         be->be_restrictops = rp_cur;
 981
 982 done:;
 983         if ( rc == LDAP_SUCCESS ) {
 984                 attrs_free( save_attrs );
 985                 rc = SLAP_CB_CONTINUE;
 986
 987         } else {
 988                 Attribute *tmp = e->e_attrs;
 989                 e->e_attrs = save_attrs;
 990                 attrs_free( tmp );
 991         }
 992         return rc;
 993 }
 994
 995 #if defined(LDAP_SLAPI)
 996 static int
 997 monitor_back_add_plugin( monitor_info_t *mi, Backend *be, Entry *e_database )
 998 {
 999         Slapi_PBlock    *pCurrentPB;
1000         int             i, rc = LDAP_SUCCESS;
1001
1002         if ( slapi_int_pblock_get_first( be, &pCurrentPB ) != LDAP_SUCCESS ) {
1003                 /*
1004                  * LDAP_OTHER is returned if no plugins are installed
1005                  */
1006                 rc = LDAP_OTHER;
1007                 goto done;
1008         }
1009
1010         i = 0;
1011         do {
1012                 Slapi_PluginDesc        *srchdesc;
1013                 char                    buf[ BACKMONITOR_BUFSIZE ];
1014                 struct berval           bv;
1015
1016                 rc = slapi_pblock_get( pCurrentPB, SLAPI_PLUGIN_DESCRIPTION,
1017                                 &srchdesc );
1018                 if ( rc != LDAP_SUCCESS ) {
1019                         goto done;
1020                 }
1021                 if ( srchdesc ) {
1022                         snprintf( buf, sizeof(buf),
1023                                         "plugin %d name: %s; "
1024                                         "vendor: %s; "
1025                                         "version: %s; "
1026                                         "description: %s",
1027                                         i,
1028                                         srchdesc->spd_id,
1029                                         srchdesc->spd_vendor,
1030                                         srchdesc->spd_version,
1031                                         srchdesc->spd_description );
1032                 } else {
1033                         snprintf( buf, sizeof(buf),
1034                                         "plugin %d name: <no description available>", i );
1035                 }
1036
1037                 ber_str2bv( buf, 0, 0, &bv );
1038                 attr_merge_normalize_one( e_database,
1039                                 mi->mi_ad_monitoredInfo, &bv, NULL );
1040
1041                 i++;
1042
1043         } while ( ( slapi_int_pblock_get_next( &pCurrentPB ) == LDAP_SUCCESS )
1044                         && ( pCurrentPB != NULL ) );
1045
1046 done:
1047         return rc;
1048 }
1049 #endif /* defined(LDAP_SLAPI) */