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 2001-2006 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 /* for PATH_MAX on some systems (e.g. Solaris) */
  37 #ifdef HAVE_LIMITS_H
  38 #include <limits.h>
  39 #endif /* HAVE_LIMITS_H */
  40 #ifndef PATH_MAX
  41 #define PATH_MAX        4095
  42 #endif /* ! PATH_MAX */
  43
  44 static int
  45 monitor_subsys_database_modify(
  46         Operation       *op,
  47         SlapReply       *rs,
  48         Entry           *e );
  49
  50 static struct restricted_ops_t {
  51         struct berval   op;
  52         unsigned int    tag;
  53 } restricted_ops[] = {
  54         { BER_BVC( "add" ),                     SLAP_RESTRICT_OP_ADD },
  55         { BER_BVC( "bind" ),                    SLAP_RESTRICT_OP_BIND },
  56         { BER_BVC( "compare" ),                 SLAP_RESTRICT_OP_COMPARE },
  57         { BER_BVC( "delete" ),                  SLAP_RESTRICT_OP_DELETE },
  58         { BER_BVC( "extended" ),                SLAP_RESTRICT_OP_EXTENDED },
  59         { BER_BVC( "modify" ),                  SLAP_RESTRICT_OP_MODIFY },
  60         { BER_BVC( "rename" ),                  SLAP_RESTRICT_OP_RENAME },
  61         { BER_BVC( "search" ),                  SLAP_RESTRICT_OP_SEARCH },
  62         { BER_BVNULL,                           0 }
  63 }, restricted_exops[] = {
  64         { BER_BVC( LDAP_EXOP_START_TLS ),       SLAP_RESTRICT_EXOP_START_TLS },
  65         { BER_BVC( LDAP_EXOP_MODIFY_PASSWD ),   SLAP_RESTRICT_EXOP_MODIFY_PASSWD },
  66         { BER_BVC( LDAP_EXOP_WHO_AM_I ),        SLAP_RESTRICT_EXOP_WHOAMI },
  67         { BER_BVC( LDAP_EXOP_CANCEL ),  SLAP_RESTRICT_EXOP_CANCEL },
  68         { BER_BVNULL,                           0 }
  69 };
  70
  71 static int
  72 init_readOnly( monitor_info_t *mi, Entry *e, slap_mask_t restrictops )
  73 {
  74         struct berval   *tf = ( ( restrictops & SLAP_RESTRICT_OP_MASK ) == SLAP_RESTRICT_OP_WRITES ) ?
  75                 (struct berval *)&slap_true_bv : (struct berval *)&slap_false_bv;
  76
  77         return attr_merge_one( e, mi->mi_ad_readOnly, tf, tf );
  78 }
  79
  80 static int
  81 init_restrictedOperation( monitor_info_t *mi, Entry *e, slap_mask_t restrictops )
  82 {
  83         int     i, rc;
  84
  85         for ( i = 0; restricted_ops[ i ].op.bv_val; i++ ) {
  86                 if ( restrictops & restricted_ops[ i ].tag ) {
  87                         rc = attr_merge_one( e, mi->mi_ad_restrictedOperation,
  88                                         &restricted_ops[ i ].op,
  89                                         &restricted_ops[ i ].op );
  90                         if ( rc ) {
  91                                 return rc;
  92                         }
  93                 }
  94         }
  95
  96         for ( i = 0; restricted_exops[ i ].op.bv_val; i++ ) {
  97                 if ( restrictops & restricted_exops[ i ].tag ) {
  98                         rc = attr_merge_one( e, mi->mi_ad_restrictedOperation,
  99                                         &restricted_exops[ i ].op,
 100                                         &restricted_exops[ i ].op );
 101                         if ( rc ) {
 102                                 return rc;
 103                         }
 104                 }
 105         }
 106
 107         return LDAP_SUCCESS;
 108 }
 109
 110 static int
 111 monitor_subsys_database_init_one(
 112         monitor_info_t          *mi,
 113         BackendDB               *be,
 114         monitor_subsys_t        *ms,
 115         monitor_subsys_t        *ms_backend,
 116         monitor_subsys_t        *ms_overlay,
 117         struct berval           *rdn,
 118         Entry                   *e_database,
 119         Entry                   ***epp )
 120 {
 121         char                    buf[ BACKMONITOR_BUFSIZE ];
 122         int                     j;
 123         slap_overinfo           *oi = NULL;
 124         BackendInfo             *bi, *bi2;
 125         Entry                   *e;
 126         monitor_entry_t         *mp;
 127         char                    *rdnval = strchr( rdn->bv_val, '=' ) + 1;
 128         struct berval           bv;
 129
 130         bi = be->bd_info;
 131
 132         if ( overlay_is_over( be ) ) {
 133                 oi = (slap_overinfo *)be->bd_info->bi_private;
 134                 bi = oi->oi_orig;
 135         }
 136
 137         /* Subordinates are not exposed as their own naming context */
 138         if ( SLAP_GLUE_SUBORDINATE( be ) ) {
 139                 return 0;
 140         }
 141
 142         e = monitor_entry_stub( &ms->mss_dn, &ms->mss_ndn, rdn,
 143                 mi->mi_oc_monitoredObject, mi, NULL, NULL );
 144
 145         if ( e == NULL ) {
 146                 Debug( LDAP_DEBUG_ANY,
 147                         "monitor_subsys_database_init: "
 148                         "unable to create entry \"%s,%s\"\n",
 149                         rdn->bv_val, ms->mss_dn.bv_val, 0 );
 150                 return( -1 );
 151         }
 152
 153         ber_str2bv( bi->bi_type, 0, 0, &bv );
 154         attr_merge_one( e, mi->mi_ad_monitoredInfo, &bv, NULL );
 155         attr_merge_one( e, mi->mi_ad_monitorIsShadow,
 156                 SLAP_SHADOW( be ) ? (struct berval *)&slap_true_bv :
 157                         (struct berval *)&slap_false_bv, NULL );
 158
 159         if ( SLAP_MONITOR( be ) ) {
 160                 attr_merge( e, slap_schema.si_ad_monitorContext,
 161                                 be->be_suffix, be->be_nsuffix );
 162                 attr_merge( e_database, slap_schema.si_ad_monitorContext,
 163                                 be->be_suffix, be->be_nsuffix );
 164
 165         } else {
 166                 if ( be->be_suffix == NULL ) {
 167                         Debug( LDAP_DEBUG_ANY,
 168                                 "monitor_subsys_database_init: "
 169                                 "missing suffix for %s\n",
 170                                 rdnval, 0, 0 );
 171                         return -1;
 172                 }
 173                 attr_merge( e, slap_schema.si_ad_namingContexts,
 174                                 be->be_suffix, be->be_nsuffix );
 175                 attr_merge( e_database, slap_schema.si_ad_namingContexts,
 176                                 be->be_suffix, be->be_nsuffix );
 177         }
 178
 179         (void)init_readOnly( mi, e, be->be_restrictops );
 180         (void)init_restrictedOperation( mi, e, be->be_restrictops );
 181
 182         if ( SLAP_SHADOW( be ) && be->be_update_refs ) {
 183                 attr_merge_normalize( e, mi->mi_ad_monitorUpdateRef,
 184                                 be->be_update_refs, NULL );
 185         }
 186
 187         if ( oi != NULL ) {
 188                 slap_overinst   *on = oi->oi_list,
 189                                 *on1 = on;
 190
 191                 for ( ; on; on = on->on_next ) {
 192                         slap_overinst           *on2;
 193
 194                         for ( on2 = on1; on2 != on; on2 = on2->on_next ) {
 195                                 if ( on2->on_bi.bi_type == on->on_bi.bi_type ) {
 196                                         break;
 197                                 }
 198                         }
 199
 200                         if ( on2 != on ) {
 201                                 break;
 202                         }
 203
 204                         ber_str2bv( on->on_bi.bi_type, 0, 0, &bv );
 205                         attr_merge_normalize_one( e, mi->mi_ad_monitorOverlay,
 206                                         &bv, NULL );
 207
 208                         /* find the overlay number, j */
 209                         for ( on2 = overlay_next( NULL ), j = 0; on2; on2 = overlay_next( on2 ), j++ ) {
 210                                 if ( on2->on_bi.bi_type == on->on_bi.bi_type ) {
 211                                         break;
 212                                 }
 213                         }
 214                         assert( on2 != NULL );
 215
 216                         snprintf( buf, sizeof( buf ),
 217                                 "cn=Overlay %d,%s",
 218                                 j, ms_overlay->mss_dn.bv_val );
 219                         ber_str2bv( buf, 0, 0, &bv );
 220                         attr_merge_normalize_one( e,
 221                                         slap_schema.si_ad_seeAlso,
 222                                         &bv, NULL );
 223                 }
 224         }
 225
 226         j = -1;
 227         LDAP_STAILQ_FOREACH( bi2, &backendInfo, bi_next ) {
 228                 j++;
 229                 if ( bi2->bi_type == bi->bi_type ) {
 230                         snprintf( buf, sizeof( buf ),
 231                                 "cn=Backend %d,%s",
 232                                 j, ms_backend->mss_dn.bv_val );
 233                         bv.bv_val = buf;
 234                         bv.bv_len = strlen( buf );
 235                         attr_merge_normalize_one( e,
 236                                         slap_schema.si_ad_seeAlso,
 237                                         &bv, NULL );
 238                         break;
 239                 }
 240         }
 241         /* we must find it! */
 242         assert( j >= 0 );
 243
 244         mp = monitor_entrypriv_create();
 245         if ( mp == NULL ) {
 246                 return -1;
 247         }
 248         e->e_private = ( void * )mp;
 249         mp->mp_info = ms;
 250         mp->mp_flags = ms->mss_flags
 251                 | MONITOR_F_SUB;
 252
 253         if ( monitor_cache_add( mi, e ) ) {
 254                 Debug( LDAP_DEBUG_ANY,
 255                         "monitor_subsys_database_init: "
 256                         "unable to add entry \"%s,%s\"\n",
 257                         rdn->bv_val, ms->mss_dn.bv_val, 0 );
 258                 return( -1 );
 259         }
 260
 261 #if defined(LDAP_SLAPI)
 262         monitor_back_add_plugin( mi, be, e );
 263 #endif /* defined(LDAP_SLAPI) */
 264
 265         if ( oi != NULL ) {
 266                 Entry           **ep_overlay = &mp->mp_children;
 267                 monitor_entry_t *mp_overlay;
 268                 slap_overinst   *on = oi->oi_list;
 269                 int             o;
 270
 271                 for ( o = 0; on; o++, on = on->on_next ) {
 272                         Entry                   *e_overlay;
 273                         slap_overinst           *on2;
 274
 275                         /* find the overlay number, j */
 276                         for ( on2 = overlay_next( NULL ), j = 0; on2; on2 = overlay_next( on2 ), j++ ) {
 277                                 if ( on2->on_bi.bi_type == on->on_bi.bi_type ) {
 278                                         break;
 279                                 }
 280                         }
 281                         assert( on2 != NULL );
 282
 283                         bv.bv_len = snprintf( buf, sizeof( buf ), "cn=Overlay %d", o );
 284                         bv.bv_val = buf;
 285
 286                         e_overlay = monitor_entry_stub( &e->e_name, &e->e_nname, &bv,
 287                                 mi->mi_oc_monitoredObject, mi, NULL, NULL );
 288
 289                         if ( e_overlay == NULL ) {
 290                                 Debug( LDAP_DEBUG_ANY,
 291                                         "monitor_subsys_database_init: "
 292                                         "unable to create entry "
 293                                         "\"cn=Overlay %d,%s,%s\"\n",
 294                                         o, rdn->bv_val, ms->mss_dn.bv_val );
 295                                 return( -1 );
 296                         }
 297                         ber_str2bv( on->on_bi.bi_type, 0, 0, &bv );
 298                         attr_merge_one( e_overlay, mi->mi_ad_monitoredInfo, &bv, NULL );
 299
 300                         bv.bv_len = snprintf( buf, sizeof( buf ), "cn=Overlay %d,%s",
 301                                 j, ms_overlay->mss_dn.bv_val );
 302                         bv.bv_val = buf;
 303                         attr_merge_normalize_one( e_overlay, slap_schema.si_ad_seeAlso,
 304                                 &bv, NULL );
 305
 306                         if ( SLAP_MONITOR( be ) ) {
 307                                 attr_merge( e_overlay, slap_schema.si_ad_monitorContext,
 308                                                 be->be_suffix, be->be_nsuffix );
 309
 310                         } else {
 311                                 attr_merge( e_overlay, slap_schema.si_ad_namingContexts,
 312                                                 be->be_suffix, be->be_nsuffix );
 313                         }
 314
 315                         mp_overlay = monitor_entrypriv_create();
 316                         if ( mp_overlay == NULL ) {
 317                                 return -1;
 318                         }
 319                         e_overlay->e_private = ( void * )mp_overlay;
 320                         mp_overlay->mp_info = ms;
 321                         mp_overlay->mp_flags = ms->mss_flags
 322                                 | MONITOR_F_SUB;
 323
 324                         if ( monitor_cache_add( mi, e_overlay ) ) {
 325                                 Debug( LDAP_DEBUG_ANY,
 326                                         "monitor_subsys_database_init: "
 327                                         "unable to add entry "
 328                                         "\"cn=Overlay %d,%s,%s\"\n",
 329                                         o, rdn->bv_val, ms->mss_dn.bv_val );
 330                                 return( -1 );
 331                         }
 332
 333                         *ep_overlay = e_overlay;
 334                         ep_overlay = &mp_overlay->mp_next;
 335                 }
 336         }
 337
 338         **epp = e;
 339         *epp = &mp->mp_next;
 340
 341         return 0;
 342 }
 343
 344 int
 345 monitor_subsys_database_init(
 346         BackendDB               *be,
 347         monitor_subsys_t        *ms )
 348 {
 349         monitor_info_t          *mi;
 350         Entry                   *e_database, **ep;
 351         int                     i, rc;
 352         monitor_entry_t         *mp;
 353         monitor_subsys_t        *ms_backend,
 354                                 *ms_overlay;
 355         struct berval           bv;
 356
 357         assert( be != NULL );
 358
 359         ms->mss_modify = monitor_subsys_database_modify;
 360
 361         mi = ( monitor_info_t * )be->be_private;
 362
 363         ms_backend = monitor_back_get_subsys( SLAPD_MONITOR_BACKEND_NAME );
 364         if ( ms_backend == NULL ) {
 365                 Debug( LDAP_DEBUG_ANY,
 366                         "monitor_subsys_database_init: "
 367                         "unable to get "
 368                         "\"" SLAPD_MONITOR_BACKEND_NAME "\" "
 369                         "subsystem\n",
 370                         0, 0, 0 );
 371                 return -1;
 372         }
 373
 374         ms_overlay = monitor_back_get_subsys( SLAPD_MONITOR_OVERLAY_NAME );
 375         if ( ms_overlay == NULL ) {
 376                 Debug( LDAP_DEBUG_ANY,
 377                         "monitor_subsys_database_init: "
 378                         "unable to get "
 379                         "\"" SLAPD_MONITOR_OVERLAY_NAME "\" "
 380                         "subsystem\n",
 381                         0, 0, 0 );
 382                 return -1;
 383         }
 384
 385         if ( monitor_cache_get( mi, &ms->mss_ndn, &e_database ) ) {
 386                 Debug( LDAP_DEBUG_ANY,
 387                         "monitor_subsys_database_init: "
 388                         "unable to get entry \"%s\"\n",
 389                         ms->mss_ndn.bv_val, 0, 0 );
 390                 return( -1 );
 391         }
 392
 393         (void)init_readOnly( mi, e_database, frontendDB->be_restrictops );
 394         (void)init_restrictedOperation( mi, e_database, frontendDB->be_restrictops );
 395
 396         mp = ( monitor_entry_t * )e_database->e_private;
 397         mp->mp_children = NULL;
 398         ep = &mp->mp_children;
 399
 400         BER_BVSTR( &bv, "cn=Frontend" );
 401         rc = monitor_subsys_database_init_one( mi, frontendDB,
 402                 ms, ms_backend, ms_overlay, &bv, e_database, &ep );
 403         if ( rc != 0 ) {
 404                 return rc;
 405         }
 406
 407         i = -1;
 408         LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
 409                 char            buf[ BACKMONITOR_BUFSIZE ];
 410
 411                 bv.bv_val = buf;
 412                 bv.bv_len = snprintf( buf, sizeof( buf ), "cn=Database %d", ++i );
 413                 if ( bv.bv_len >= sizeof( buf ) ) {
 414                         return -1;
 415                 }
 416
 417                 rc = monitor_subsys_database_init_one( mi, be,
 418                         ms, ms_backend, ms_overlay, &bv, e_database, &ep );
 419                 if ( rc != 0 ) {
 420                         return rc;
 421                 }
 422         }
 423
 424         monitor_cache_release( mi, e_database );
 425
 426         return( 0 );
 427 }
 428
 429 /*
 430  * v: array of values
 431  * cur: must not contain the tags corresponding to the values in v
 432  * delta: will contain the tags corresponding to the values in v
 433  */
 434 static int
 435 value_mask( BerVarray v, slap_mask_t cur, slap_mask_t *delta )
 436 {
 437         for ( ; !BER_BVISNULL( v ); v++ ) {
 438                 struct restricted_ops_t         *rops;
 439                 int                             i;
 440
 441                 if ( OID_LEADCHAR( v->bv_val[ 0 ] ) ) {
 442                         rops = restricted_exops;
 443
 444                 } else {
 445                         rops = restricted_ops;
 446                 }
 447
 448                 for ( i = 0; !BER_BVISNULL( &rops[ i ].op ); i++ ) {
 449                         if ( ber_bvstrcasecmp( v, &rops[ i ].op ) != 0 ) {
 450                                 continue;
 451                         }
 452
 453                         if ( rops[ i ].tag & *delta ) {
 454                                 return LDAP_OTHER;
 455                         }
 456
 457                         if ( rops[ i ].tag & cur ) {
 458                                 return LDAP_OTHER;
 459                         }
 460
 461                         cur |= rops[ i ].tag;
 462                         *delta |= rops[ i ].tag;
 463
 464                         break;
 465                 }
 466
 467                 if ( BER_BVISNULL( &rops[ i ].op ) ) {
 468                         return LDAP_INVALID_SYNTAX;
 469                 }
 470         }
 471
 472         return LDAP_SUCCESS;
 473 }
 474
 475 static int
 476 monitor_subsys_database_modify(
 477         Operation       *op,
 478         SlapReply       *rs,
 479         Entry           *e )
 480 {
 481         monitor_info_t  *mi = (monitor_info_t *)op->o_bd->be_private;
 482         int             rc = LDAP_OTHER;
 483         Attribute       *save_attrs, *a;
 484         Modifications   *ml;
 485         Backend         *be;
 486         int             ro_gotval = 1, i, n;
 487         slap_mask_t     rp_add = 0, rp_delete = 0, rp_cur;
 488         struct berval   *tf;
 489
 490         i = sscanf( e->e_nname.bv_val, "cn=database %d,", &n );
 491         if ( i != 1 ) {
 492                 return SLAP_CB_CONTINUE;
 493         }
 494
 495         if ( n < 0 || n >= nBackendDB ) {
 496                 rs->sr_text = "invalid database index";
 497                 return ( rs->sr_err = LDAP_NO_SUCH_OBJECT );
 498         }
 499
 500         LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
 501                 if ( n == 0 ) {
 502                         break;
 503                 }
 504                 n--;
 505         }
 506         /* do not allow some changes on back-monitor (needs work)... */
 507         if ( SLAP_MONITOR( be ) ) {
 508                 rs->sr_text = "no modifications allowed to monitor database entry";
 509                 return ( rs->sr_err = LDAP_UNWILLING_TO_PERFORM );
 510         }
 511
 512         rp_cur = be->be_restrictops;
 513
 514         save_attrs = e->e_attrs;
 515         e->e_attrs = attrs_dup( e->e_attrs );
 516
 517         for ( ml = op->orm_modlist; ml; ml = ml->sml_next ) {
 518                 Modification *mod = &ml->sml_mod;
 519
 520                 if ( mod->sm_desc == mi->mi_ad_readOnly ) {
 521                         int     val = -1;
 522
 523                         if ( mod->sm_values ) {
 524                                 if ( !BER_BVISNULL( &mod->sm_values[ 1 ] ) ) {
 525                                         rs->sr_text = "attempting to modify multiple values of single-valued attribute";
 526                                         rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 527                                         goto done;
 528                                 }
 529
 530                                 if ( bvmatch( &slap_true_bv, mod->sm_values )) {
 531                                         val = 1;
 532
 533                                 } else if ( bvmatch( &slap_false_bv, mod->sm_values )) {
 534                                         val = 0;
 535
 536                                 } else {
 537                                         assert( 0 );
 538                                         rc = rs->sr_err = LDAP_INVALID_SYNTAX;
 539                                         goto done;
 540                                 }
 541                         }
 542
 543                         switch ( mod->sm_op ) {
 544                         case LDAP_MOD_DELETE:
 545                                 if ( ro_gotval < 1 ) {
 546                                         rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 547                                         goto done;
 548                                 }
 549                                 ro_gotval--;
 550
 551                                 if ( val == 0 && ( rp_cur & SLAP_RESTRICT_OP_WRITES ) == SLAP_RESTRICT_OP_WRITES ) {
 552                                         rc = rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE;
 553                                         goto done;
 554                                 }
 555
 556                                 if ( val == 1 && ( rp_cur & SLAP_RESTRICT_OP_WRITES ) != SLAP_RESTRICT_OP_WRITES ) {
 557                                         rc = rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE;
 558                                         goto done;
 559                                 }
 560
 561                                 break;
 562
 563                         case LDAP_MOD_REPLACE:
 564                                 ro_gotval = 0;
 565                                 /* fall thru */
 566
 567                         case LDAP_MOD_ADD:
 568                                 if ( ro_gotval > 0 ) {
 569                                         rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 570                                         goto done;
 571                                 }
 572                                 ro_gotval++;
 573
 574                                 if ( val == 1 ) {
 575                                         rp_add |= (~rp_cur) & SLAP_RESTRICT_OP_WRITES;
 576                                         rp_cur |= SLAP_RESTRICT_OP_WRITES;
 577                                         rp_delete &= ~SLAP_RESTRICT_OP_WRITES;
 578
 579                                 } else if ( val == 0 ) {
 580                                         rp_delete |= rp_cur & SLAP_RESTRICT_OP_WRITES;
 581                                         rp_cur &= ~SLAP_RESTRICT_OP_WRITES;
 582                                         rp_add &= ~SLAP_RESTRICT_OP_WRITES;
 583                                 }
 584                                 break;
 585
 586                         default:
 587                                 rc = rs->sr_err = LDAP_OTHER;
 588                                 goto done;
 589                         }
 590
 591                 } else if ( mod->sm_desc == mi->mi_ad_restrictedOperation ) {
 592                         slap_mask_t     mask = 0;
 593
 594                         switch ( mod->sm_op ) {
 595                         case LDAP_MOD_DELETE:
 596                                 if ( mod->sm_values == NULL ) {
 597                                         rp_delete = rp_cur;
 598                                         rp_cur = 0;
 599                                         rp_add = 0;
 600                                         break;
 601                                 }
 602                                 rc = value_mask( mod->sm_values, ~rp_cur, &mask );
 603                                 if ( rc == LDAP_SUCCESS ) {
 604                                         rp_delete |= mask;
 605                                         rp_add &= ~mask;
 606                                         rp_cur &= ~mask;
 607
 608                                 } else if ( rc == LDAP_OTHER ) {
 609                                         rc = LDAP_NO_SUCH_ATTRIBUTE;
 610                                 }
 611                                 break;
 612
 613                         case LDAP_MOD_REPLACE:
 614                                 rp_delete = rp_cur;
 615                                 rp_cur = 0;
 616                                 rp_add = 0;
 617                                 /* fall thru */
 618
 619                         case LDAP_MOD_ADD:
 620                                 rc = value_mask( mod->sm_values, rp_cur, &mask );
 621                                 if ( rc == LDAP_SUCCESS ) {
 622                                         rp_add |= mask;
 623                                         rp_cur |= mask;
 624                                         rp_delete &= ~mask;
 625
 626                                 } else if ( rc == LDAP_OTHER ) {
 627                                         rc = rs->sr_err = LDAP_TYPE_OR_VALUE_EXISTS;
 628                                 }
 629                                 break;
 630
 631                         default:
 632                                 rc = rs->sr_err = LDAP_OTHER;
 633                                 break;
 634                         }
 635
 636                         if ( rc != LDAP_SUCCESS ) {
 637                                 goto done;
 638                         }
 639
 640                 } else if ( is_at_operational( mod->sm_desc->ad_type )) {
 641                 /* accept all operational attributes */
 642                         attr_delete( &e->e_attrs, mod->sm_desc );
 643                         rc = attr_merge( e, mod->sm_desc, mod->sm_values,
 644                                 mod->sm_nvalues );
 645                         if ( rc ) {
 646                                 rc = rs->sr_err = LDAP_OTHER;
 647                                 break;
 648                         }
 649
 650                 } else {
 651                         rc = rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
 652                         break;
 653                 }
 654         }
 655
 656         /* sanity checks: */
 657         if ( ro_gotval < 1 ) {
 658                 rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 659                 goto done;
 660         }
 661
 662         if ( ( rp_cur & SLAP_RESTRICT_OP_EXTENDED ) && ( rp_cur & SLAP_RESTRICT_EXOP_MASK ) ) {
 663                 rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 664                 goto done;
 665         }
 666
 667         if ( rp_delete & rp_add ) {
 668                 rc = rs->sr_err = LDAP_OTHER;
 669                 goto done;
 670         }
 671
 672         /* check current value of readOnly */
 673         if ( ( rp_cur & SLAP_RESTRICT_OP_WRITES ) == SLAP_RESTRICT_OP_WRITES ) {
 674                 tf = (struct berval *)&slap_true_bv;
 675
 676         } else {
 677                 tf = (struct berval *)&slap_false_bv;
 678         }
 679
 680         a = attr_find( e->e_attrs, mi->mi_ad_readOnly );
 681         if ( a == NULL ) {
 682                 rc = LDAP_OTHER;
 683                 goto done;
 684         }
 685
 686         if ( !bvmatch( &a->a_vals[ 0 ], tf ) ) {
 687                 attr_delete( &e->e_attrs, mi->mi_ad_readOnly );
 688                 rc = attr_merge_one( e, mi->mi_ad_readOnly, tf, tf );
 689         }
 690
 691         if ( rc == LDAP_SUCCESS ) {
 692                 if ( rp_delete ) {
 693                         if ( rp_delete == be->be_restrictops ) {
 694                                 attr_delete( &e->e_attrs, mi->mi_ad_restrictedOperation );
 695
 696                         } else {
 697                                 a = attr_find( e->e_attrs, mi->mi_ad_restrictedOperation );
 698                                 if ( a == NULL ) {
 699                                         rc = rs->sr_err = LDAP_OTHER;
 700                                         goto done;
 701                                 }
 702
 703                                 for ( i = 0; !BER_BVISNULL( &restricted_ops[ i ].op ); i++ ) {
 704                                         if ( rp_delete & restricted_ops[ i ].tag ) {
 705                                                 int     j;
 706
 707                                                 for ( j = 0; !BER_BVISNULL( &a->a_nvals[ j ] ); j++ ) {
 708                                                         int             k;
 709
 710                                                         if ( !bvmatch( &a->a_nvals[ j ], &restricted_ops[ i ].op ) ) {
 711                                                                 continue;
 712                                                         }
 713
 714                                                         ch_free( a->a_vals[ j ].bv_val );
 715                                                         ch_free( a->a_nvals[ j ].bv_val );
 716
 717                                                         for ( k = j + 1; !BER_BVISNULL( &a->a_nvals[ k ] ); k++ ) {
 718                                                                 a->a_vals[ k - 1 ] = a->a_vals[ k ];
 719                                                                 a->a_nvals[ k - 1 ] = a->a_nvals[ k ];
 720                                                         }
 721
 722                                                         BER_BVZERO( &a->a_vals[ k - 1 ] );
 723                                                         BER_BVZERO( &a->a_nvals[ k - 1 ] );
 724                                                 }
 725                                         }
 726                                 }
 727
 728                                 for ( i = 0; !BER_BVISNULL( &restricted_exops[ i ].op ); i++ ) {
 729                                         if ( rp_delete & restricted_exops[ i ].tag ) {
 730                                                 int     j;
 731
 732                                                 for ( j = 0; !BER_BVISNULL( &a->a_nvals[ j ] ); j++ ) {
 733                                                         int             k;
 734
 735                                                         if ( !bvmatch( &a->a_nvals[ j ], &restricted_exops[ i ].op ) ) {
 736                                                                 continue;
 737                                                         }
 738
 739                                                         ch_free( a->a_vals[ j ].bv_val );
 740                                                         ch_free( a->a_nvals[ j ].bv_val );
 741
 742                                                         for ( k = j + 1; !BER_BVISNULL( &a->a_nvals[ k ] ); k++ ) {
 743                                                                 a->a_vals[ k - 1 ] = a->a_vals[ k ];
 744                                                                 a->a_nvals[ k - 1 ] = a->a_nvals[ k ];
 745                                                         }
 746
 747                                                         BER_BVZERO( &a->a_vals[ k - 1 ] );
 748                                                         BER_BVZERO( &a->a_nvals[ k - 1 ] );
 749                                                 }
 750                                         }
 751                                 }
 752                         }
 753                 }
 754
 755                 if ( rp_add ) {
 756                         for ( i = 0; !BER_BVISNULL( &restricted_ops[ i ].op ); i++ ) {
 757                                 if ( rp_add & restricted_ops[ i ].tag ) {
 758                                         attr_merge_one( e, mi->mi_ad_restrictedOperation,
 759                                                         &restricted_ops[ i ].op,
 760                                                         &restricted_ops[ i ].op );
 761                                 }
 762                         }
 763
 764                         for ( i = 0; !BER_BVISNULL( &restricted_exops[ i ].op ); i++ ) {
 765                                 if ( rp_add & restricted_exops[ i ].tag ) {
 766                                         attr_merge_one( e, mi->mi_ad_restrictedOperation,
 767                                                         &restricted_exops[ i ].op,
 768                                                         &restricted_exops[ i ].op );
 769                                 }
 770                         }
 771                 }
 772         }
 773
 774         be->be_restrictops = rp_cur;
 775
 776 done:;
 777         if ( rc == LDAP_SUCCESS ) {
 778                 attrs_free( save_attrs );
 779                 rc = SLAP_CB_CONTINUE;
 780
 781         } else {
 782                 Attribute *tmp = e->e_attrs;
 783                 e->e_attrs = save_attrs;
 784                 attrs_free( tmp );
 785         }
 786         return rc;
 787 }
 788
 789 #if defined(LDAP_SLAPI)
 790 static int
 791 monitor_back_add_plugin( monitor_info_t *mi, Backend *be, Entry *e_database )
 792 {
 793         Slapi_PBlock    *pCurrentPB;
 794         int             i, rc = LDAP_SUCCESS;
 795
 796         if ( slapi_int_pblock_get_first( be, &pCurrentPB ) != LDAP_SUCCESS ) {
 797                 /*
 798                  * LDAP_OTHER is returned if no plugins are installed
 799                  */
 800                 rc = LDAP_OTHER;
 801                 goto done;
 802         }
 803
 804         i = 0;
 805         do {
 806                 Slapi_PluginDesc        *srchdesc;
 807                 char                    buf[ BACKMONITOR_BUFSIZE ];
 808                 struct berval           bv;
 809
 810                 rc = slapi_pblock_get( pCurrentPB, SLAPI_PLUGIN_DESCRIPTION,
 811                                 &srchdesc );
 812                 if ( rc != LDAP_SUCCESS ) {
 813                         goto done;
 814                 }
 815
 816                 snprintf( buf, sizeof(buf),
 817                                 "plugin %d name: %s; "
 818                                 "vendor: %s; "
 819                                 "version: %s; "
 820                                 "description: %s",
 821                                 i,
 822                                 srchdesc->spd_id,
 823                                 srchdesc->spd_vendor,
 824                                 srchdesc->spd_version,
 825                                 srchdesc->spd_description );
 826
 827                 ber_str2bv( buf, 0, 0, &bv );
 828                 attr_merge_normalize_one( e_database,
 829                                 mi->mi_ad_monitoredInfo, &bv, NULL );
 830
 831                 i++;
 832
 833         } while ( ( slapi_int_pblock_get_next( &pCurrentPB ) == LDAP_SUCCESS )
 834                         && ( pCurrentPB != NULL ) );
 835
 836 done:
 837         return rc;
 838 }
 839 #endif /* defined(LDAP_SLAPI) */