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

   1 /* init.c - initialize monitor backend */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2001-2012 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
  27 #include <lutil.h>
  28 #include "slap.h"
  29 #include "config.h"
  30 #include "lber_pvt.h"
  31 #include "back-monitor.h"
  32
  33 #include "config.h"
  34
  35 #undef INTEGRATE_CORE_SCHEMA
  36
  37 /*
  38  * used by many functions to add description to entries
  39  *
  40  * WARNING: be_monitor may change as new databases are added,
  41  * so it should not be used outside monitor_back_db_init()
  42  * until monitor_back_db_open is called.
  43  */
  44 BackendDB                       *be_monitor;
  45
  46 static struct monitor_subsys_t  **monitor_subsys;
  47 static int                      monitor_subsys_opened;
  48 static monitor_info_t           monitor_info;
  49 static const monitor_extra_t monitor_extra = {
  50         monitor_back_is_configured,
  51         monitor_back_get_subsys,
  52         monitor_back_get_subsys_by_dn,
  53
  54         monitor_back_register_subsys,
  55         monitor_back_register_backend,
  56         monitor_back_register_database,
  57         monitor_back_register_overlay_info,
  58         monitor_back_register_overlay,
  59         monitor_back_register_entry,
  60         monitor_back_register_entry_parent,
  61         monitor_back_register_entry_attrs,
  62         monitor_back_register_entry_callback,
  63
  64         monitor_back_unregister_entry,
  65         monitor_back_unregister_entry_parent,
  66         monitor_back_unregister_entry_attrs,
  67         monitor_back_unregister_entry_callback
  68 };
  69
  70
  71 /*
  72  * subsystem data
  73  *
  74  * the known subsystems are added to the subsystems
  75  * array at backend initialization; other subsystems
  76  * may be added by calling monitor_back_register_subsys()
  77  * before the database is opened (e.g. by other backends
  78  * or by overlays or modules).
  79  */
  80 static struct monitor_subsys_t known_monitor_subsys[] = {
  81         {
  82                 SLAPD_MONITOR_BACKEND_NAME,
  83                 BER_BVNULL, BER_BVNULL, BER_BVNULL,
  84                 { BER_BVC( "This subsystem contains information about available backends." ),
  85                         BER_BVNULL },
  86                 MONITOR_F_PERSISTENT_CH,
  87                 monitor_subsys_backend_init,
  88                 NULL,   /* destroy */
  89                 NULL,   /* update */
  90                 NULL,   /* create */
  91                 NULL    /* modify */
  92         }, {
  93                 SLAPD_MONITOR_CONN_NAME,
  94                 BER_BVNULL, BER_BVNULL, BER_BVNULL,
  95                 { BER_BVC( "This subsystem contains information about connections." ),
  96                         BER_BVNULL },
  97                 MONITOR_F_VOLATILE_CH,
  98                 monitor_subsys_conn_init,
  99                 NULL,   /* destroy */
 100                 NULL,   /* update */
 101                 NULL,   /* create */
 102                 NULL    /* modify */
 103         }, {
 104                 SLAPD_MONITOR_DATABASE_NAME,
 105                 BER_BVNULL, BER_BVNULL, BER_BVNULL,
 106                 { BER_BVC( "This subsystem contains information about configured databases." ),
 107                         BER_BVNULL },
 108                 MONITOR_F_PERSISTENT_CH,
 109                 monitor_subsys_database_init,
 110                 NULL,   /* destroy */
 111                 NULL,   /* update */
 112                 NULL,   /* create */
 113                 NULL    /* modify */
 114         }, {
 115                 SLAPD_MONITOR_LISTENER_NAME,
 116                 BER_BVNULL, BER_BVNULL, BER_BVNULL,
 117                 { BER_BVC( "This subsystem contains information about active listeners." ),
 118                         BER_BVNULL },
 119                 MONITOR_F_PERSISTENT_CH,
 120                 monitor_subsys_listener_init,
 121                 NULL,   /* destroy */
 122                 NULL,   /* update */
 123                 NULL,   /* create */
 124                 NULL    /* modify */
 125         }, {
 126                 SLAPD_MONITOR_LOG_NAME,
 127                 BER_BVNULL, BER_BVNULL, BER_BVNULL,
 128                 { BER_BVC( "This subsystem contains information about logging." ),
 129                         BER_BVC( "Set the attribute \"managedInfo\" to the desired log levels." ),
 130                         BER_BVNULL },
 131                 MONITOR_F_NONE,
 132                 monitor_subsys_log_init,
 133                 NULL,   /* destroy */
 134                 NULL,   /* update */
 135                 NULL,   /* create */
 136                 NULL,   /* modify */
 137         }, {
 138                 SLAPD_MONITOR_OPS_NAME,
 139                 BER_BVNULL, BER_BVNULL, BER_BVNULL,
 140                 { BER_BVC( "This subsystem contains information about performed operations." ),
 141                         BER_BVNULL },
 142                 MONITOR_F_PERSISTENT_CH,
 143                 monitor_subsys_ops_init,
 144                 NULL,   /* destroy */
 145                 NULL,   /* update */
 146                 NULL,   /* create */
 147                 NULL,   /* modify */
 148         }, {
 149                 SLAPD_MONITOR_OVERLAY_NAME,
 150                 BER_BVNULL, BER_BVNULL, BER_BVNULL,
 151                 { BER_BVC( "This subsystem contains information about available overlays." ),
 152                         BER_BVNULL },
 153                 MONITOR_F_PERSISTENT_CH,
 154                 monitor_subsys_overlay_init,
 155                 NULL,   /* destroy */
 156                 NULL,   /* update */
 157                 NULL,   /* create */
 158                 NULL,   /* modify */
 159         }, {
 160                 SLAPD_MONITOR_SASL_NAME,
 161                 BER_BVNULL, BER_BVNULL, BER_BVNULL,
 162                 { BER_BVC( "This subsystem contains information about SASL." ),
 163                         BER_BVNULL },
 164                 MONITOR_F_NONE,
 165                 NULL,   /* init */
 166                 NULL,   /* destroy */
 167                 NULL,   /* update */
 168                 NULL,   /* create */
 169                 NULL    /* modify */
 170         }, {
 171                 SLAPD_MONITOR_SENT_NAME,
 172                 BER_BVNULL, BER_BVNULL, BER_BVNULL,
 173                 { BER_BVC( "This subsystem contains statistics." ),
 174                         BER_BVNULL },
 175                 MONITOR_F_PERSISTENT_CH,
 176                 monitor_subsys_sent_init,
 177                 NULL,   /* destroy */
 178                 NULL,   /* update */
 179                 NULL,   /* create */
 180                 NULL,   /* modify */
 181         }, {
 182                 SLAPD_MONITOR_THREAD_NAME,
 183                 BER_BVNULL, BER_BVNULL, BER_BVNULL,
 184                 { BER_BVC( "This subsystem contains information about threads." ),
 185                         BER_BVNULL },
 186                 MONITOR_F_PERSISTENT_CH,
 187                 monitor_subsys_thread_init,
 188                 NULL,   /* destroy */
 189                 NULL,   /* update */
 190                 NULL,   /* create */
 191                 NULL    /* modify */
 192         }, {
 193                 SLAPD_MONITOR_TIME_NAME,
 194                 BER_BVNULL, BER_BVNULL, BER_BVNULL,
 195                 { BER_BVC( "This subsystem contains information about time." ),
 196                         BER_BVNULL },
 197                 MONITOR_F_PERSISTENT_CH,
 198                 monitor_subsys_time_init,
 199                 NULL,   /* destroy */
 200                 NULL,   /* update */
 201                 NULL,   /* create */
 202                 NULL,   /* modify */
 203         }, {
 204                 SLAPD_MONITOR_TLS_NAME,
 205                 BER_BVNULL, BER_BVNULL, BER_BVNULL,
 206                 { BER_BVC( "This subsystem contains information about TLS." ),
 207                         BER_BVNULL },
 208                 MONITOR_F_NONE,
 209                 NULL,   /* init */
 210                 NULL,   /* destroy */
 211                 NULL,   /* update */
 212                 NULL,   /* create */
 213                 NULL    /* modify */
 214         }, {
 215                 SLAPD_MONITOR_RWW_NAME,
 216                 BER_BVNULL, BER_BVNULL, BER_BVNULL,
 217                 { BER_BVC( "This subsystem contains information about read/write waiters." ),
 218                         BER_BVNULL },
 219                 MONITOR_F_PERSISTENT_CH,
 220                 monitor_subsys_rww_init,
 221                 NULL,   /* destroy */
 222                 NULL,   /* update */
 223                 NULL,   /* create */
 224                 NULL    /* modify */
 225         }, { NULL }
 226 };
 227
 228 int
 229 monitor_subsys_is_opened( void )
 230 {
 231         return monitor_subsys_opened;
 232 }
 233
 234 int
 235 monitor_back_register_subsys(
 236         monitor_subsys_t        *ms )
 237 {
 238         int     i = 0;
 239
 240         if ( monitor_subsys ) {
 241                 for ( ; monitor_subsys[ i ] != NULL; i++ )
 242                         /* just count'em */ ;
 243         }
 244
 245         monitor_subsys = ch_realloc( monitor_subsys,
 246                         ( 2 + i ) * sizeof( monitor_subsys_t * ) );
 247
 248         if ( monitor_subsys == NULL ) {
 249                 return -1;
 250         }
 251
 252         monitor_subsys[ i ] = ms;
 253         monitor_subsys[ i + 1 ] = NULL;
 254
 255         /* if a subsystem is registered __AFTER__ subsystem
 256          * initialization (depending on the sequence the databases
 257          * are listed in slapd.conf), init it */
 258         if ( monitor_subsys_is_opened() ) {
 259
 260                 /* FIXME: this should only be possible
 261                  * if be_monitor is already initialized */
 262                 assert( be_monitor != NULL );
 263
 264                 if ( ms->mss_open && ( *ms->mss_open )( be_monitor, ms ) ) {
 265                         return -1;
 266                 }
 267
 268                 ms->mss_flags |= MONITOR_F_OPENED;
 269         }
 270
 271         return 0;
 272 }
 273
 274 enum {
 275         LIMBO_ENTRY,
 276         LIMBO_ENTRY_PARENT,
 277         LIMBO_ATTRS,
 278         LIMBO_CB,
 279         LIMBO_BACKEND,
 280         LIMBO_DATABASE,
 281         LIMBO_OVERLAY_INFO,
 282         LIMBO_OVERLAY,
 283
 284         LIMBO_LAST
 285 };
 286
 287 typedef struct entry_limbo_t {
 288         int                     el_type;
 289         BackendInfo             *el_bi;
 290         BackendDB               *el_be;
 291         slap_overinst           *el_on;
 292         Entry                   *el_e;
 293         Attribute               *el_a;
 294         struct berval           *el_ndn;
 295         struct berval           el_nbase;
 296         int                     el_scope;
 297         struct berval           el_filter;
 298         monitor_callback_t      *el_cb;
 299         monitor_subsys_t        *el_mss;
 300         unsigned long           el_flags;
 301         struct entry_limbo_t    *el_next;
 302 } entry_limbo_t;
 303
 304 int
 305 monitor_back_is_configured( void )
 306 {
 307         return be_monitor != NULL;
 308 }
 309
 310 int
 311 monitor_back_register_backend(
 312         BackendInfo             *bi )
 313 {
 314         return -1;
 315 }
 316
 317 int
 318 monitor_back_register_overlay_info(
 319         slap_overinst           *on )
 320 {
 321         return -1;
 322 }
 323
 324 int
 325 monitor_back_register_backend_limbo(
 326         BackendInfo             *bi )
 327 {
 328         return -1;
 329 }
 330
 331 int
 332 monitor_back_register_database_limbo(
 333         BackendDB               *be,
 334         struct berval           *ndn_out )
 335 {
 336         entry_limbo_t   **elpp, el = { 0 };
 337         monitor_info_t  *mi;
 338
 339         if ( be_monitor == NULL ) {
 340                 Debug( LDAP_DEBUG_ANY,
 341                         "monitor_back_register_database_limbo: "
 342                         "monitor database not configured.\n",
 343                         0, 0, 0 );
 344                 return -1;
 345         }
 346
 347         mi = ( monitor_info_t * )be_monitor->be_private;
 348
 349
 350         el.el_type = LIMBO_DATABASE;
 351
 352         el.el_be = be->bd_self;
 353         el.el_ndn = ndn_out;
 354
 355         for ( elpp = &mi->mi_entry_limbo;
 356                         *elpp;
 357                         elpp = &(*elpp)->el_next )
 358                 /* go to last */;
 359
 360         *elpp = (entry_limbo_t *)ch_malloc( sizeof( entry_limbo_t ) );
 361
 362         el.el_next = NULL;
 363         **elpp = el;
 364
 365         return 0;
 366 }
 367
 368 int
 369 monitor_back_register_overlay_info_limbo(
 370         slap_overinst           *on )
 371 {
 372         return -1;
 373 }
 374
 375 int
 376 monitor_back_register_overlay_limbo(
 377         BackendDB               *be,
 378         struct slap_overinst    *on,
 379         struct berval           *ndn_out )
 380 {
 381         entry_limbo_t   **elpp, el = { 0 };
 382         monitor_info_t  *mi;
 383
 384         if ( be_monitor == NULL ) {
 385                 Debug( LDAP_DEBUG_ANY,
 386                         "monitor_back_register_overlay_limbo: "
 387                         "monitor database not configured.\n",
 388                         0, 0, 0 );
 389                 return -1;
 390         }
 391
 392         mi = ( monitor_info_t * )be_monitor->be_private;
 393
 394
 395         el.el_type = LIMBO_OVERLAY;
 396
 397         el.el_be = be->bd_self;
 398         el.el_on = on;
 399         el.el_ndn = ndn_out;
 400
 401         for ( elpp = &mi->mi_entry_limbo;
 402                         *elpp;
 403                         elpp = &(*elpp)->el_next )
 404                 /* go to last */;
 405
 406         *elpp = (entry_limbo_t *)ch_malloc( sizeof( entry_limbo_t ) );
 407
 408         el.el_next = NULL;
 409         **elpp = el;
 410
 411         return 0;
 412 }
 413
 414 int
 415 monitor_back_register_entry(
 416         Entry                   *e,
 417         monitor_callback_t      *cb,
 418         monitor_subsys_t        *mss,
 419         unsigned long           flags )
 420 {
 421         monitor_info_t  *mi;
 422
 423         if ( be_monitor == NULL ) {
 424                 Debug( LDAP_DEBUG_ANY,
 425                         "monitor_back_register_entry(\"%s\"): "
 426                         "monitor database not configured.\n",
 427                         e->e_name.bv_val, 0, 0 );
 428                 return -1;
 429         }
 430
 431         mi = ( monitor_info_t * )be_monitor->be_private;
 432
 433         assert( mi != NULL );
 434         assert( e != NULL );
 435         assert( e->e_private == NULL );
 436
 437         if ( monitor_subsys_is_opened() ) {
 438                 Entry           *e_parent = NULL,
 439                                 *e_new = NULL,
 440                                 **ep = NULL;
 441                 struct berval   pdn = BER_BVNULL;
 442                 monitor_entry_t *mp = NULL,
 443                                 *mp_parent = NULL;
 444                 int             rc = 0;
 445
 446                 if ( monitor_cache_get( mi, &e->e_nname, &e_parent ) == 0 ) {
 447                         /* entry exists */
 448                         Debug( LDAP_DEBUG_ANY,
 449                                 "monitor_back_register_entry(\"%s\"): "
 450                                 "entry exists\n",
 451                                 e->e_name.bv_val, 0, 0 );
 452                         monitor_cache_release( mi, e_parent );
 453                         return -1;
 454                 }
 455
 456                 dnParent( &e->e_nname, &pdn );
 457                 if ( monitor_cache_get( mi, &pdn, &e_parent ) != 0 ) {
 458                         /* parent does not exist */
 459                         Debug( LDAP_DEBUG_ANY,
 460                                 "monitor_back_register_entry(\"%s\"): "
 461                                 "parent \"%s\" not found\n",
 462                                 e->e_name.bv_val, pdn.bv_val, 0 );
 463                         return -1;
 464                 }
 465
 466                 assert( e_parent->e_private != NULL );
 467                 mp_parent = ( monitor_entry_t * )e_parent->e_private;
 468
 469                 if ( mp_parent->mp_flags & MONITOR_F_VOLATILE ) {
 470                         /* entry is volatile; cannot append children */
 471                         Debug( LDAP_DEBUG_ANY,
 472                                 "monitor_back_register_entry(\"%s\"): "
 473                                 "parent \"%s\" is volatile\n",
 474                                 e->e_name.bv_val, e_parent->e_name.bv_val, 0 );
 475                         rc = -1;
 476                         goto done;
 477                 }
 478
 479                 mp = monitor_entrypriv_create();
 480                 if ( mp == NULL ) {
 481                         Debug( LDAP_DEBUG_ANY,
 482                                 "monitor_back_register_entry(\"%s\"): "
 483                                 "monitor_entrypriv_create() failed\n",
 484                                 e->e_name.bv_val, 0, 0 );
 485                         rc = -1;
 486                         goto done;
 487                 }
 488
 489                 e_new = entry_dup( e );
 490                 if ( e_new == NULL ) {
 491                         Debug( LDAP_DEBUG_ANY,
 492                                 "monitor_back_register_entry(\"%s\"): "
 493                                 "entry_dup() failed\n",
 494                                 e->e_name.bv_val, 0, 0 );
 495                         rc = -1;
 496                         goto done;
 497                 }
 498
 499                 e_new->e_private = ( void * )mp;
 500                 if ( mss != NULL ) {
 501                         mp->mp_info = mss;
 502                         mp->mp_flags = flags;
 503
 504                 } else {
 505                         mp->mp_info = mp_parent->mp_info;
 506                         mp->mp_flags = mp_parent->mp_flags | MONITOR_F_SUB;
 507                 }
 508                 mp->mp_cb = cb;
 509
 510                 ep = &mp_parent->mp_children;
 511                 for ( ; *ep; ) {
 512                         mp_parent = ( monitor_entry_t * )(*ep)->e_private;
 513                         ep = &mp_parent->mp_next;
 514                 }
 515                 *ep = e_new;
 516
 517                 if ( monitor_cache_add( mi, e_new ) ) {
 518                         Debug( LDAP_DEBUG_ANY,
 519                                 "monitor_back_register_entry(\"%s\"): "
 520                                 "unable to add entry\n",
 521                                 e->e_name.bv_val, 0, 0 );
 522                         rc = -1;
 523                         goto done;
 524                 }
 525
 526 done:;
 527                 if ( rc ) {
 528                         if ( mp ) {
 529                                 ch_free( mp );
 530                         }
 531                         if ( e_new ) {
 532                                 e_new->e_private = NULL;
 533                                 entry_free( e_new );
 534                         }
 535                 }
 536
 537                 if ( e_parent ) {
 538                         monitor_cache_release( mi, e_parent );
 539                 }
 540
 541         } else {
 542                 entry_limbo_t   **elpp, el = { 0 };
 543
 544                 el.el_type = LIMBO_ENTRY;
 545
 546                 el.el_e = entry_dup( e );
 547                 if ( el.el_e == NULL ) {
 548                         Debug( LDAP_DEBUG_ANY,
 549                                 "monitor_back_register_entry(\"%s\"): "
 550                                 "entry_dup() failed\n",
 551                                 e->e_name.bv_val, 0, 0 );
 552                         return -1;
 553                 }
 554
 555                 el.el_cb = cb;
 556                 el.el_mss = mss;
 557                 el.el_flags = flags;
 558
 559                 for ( elpp = &mi->mi_entry_limbo;
 560                                 *elpp;
 561                                 elpp = &(*elpp)->el_next )
 562                         /* go to last */;
 563
 564                 *elpp = (entry_limbo_t *)ch_malloc( sizeof( entry_limbo_t ) );
 565                 if ( *elpp == NULL ) {
 566                         el.el_e->e_private = NULL;
 567                         entry_free( el.el_e );
 568                         return -1;
 569                 }
 570
 571                 el.el_next = NULL;
 572                 **elpp = el;
 573         }
 574
 575         return 0;
 576 }
 577
 578 int
 579 monitor_back_register_entry_parent(
 580         Entry                   *e,
 581         monitor_callback_t      *cb,
 582         monitor_subsys_t        *mss,
 583         unsigned long           flags,
 584         struct berval           *nbase,
 585         int                     scope,
 586         struct berval           *filter )
 587 {
 588         monitor_info_t  *mi;
 589         struct berval   ndn = BER_BVNULL;
 590
 591         if ( be_monitor == NULL ) {
 592                 Debug( LDAP_DEBUG_ANY,
 593                         "monitor_back_register_entry_parent(base=\"%s\" scope=%s filter=\"%s\"): "
 594                         "monitor database not configured.\n",
 595                         BER_BVISNULL( nbase ) ? "" : nbase->bv_val,
 596                         ldap_pvt_scope2str( scope ),
 597                         BER_BVISNULL( filter ) ? "" : filter->bv_val );
 598                 return -1;
 599         }
 600
 601         mi = ( monitor_info_t * )be_monitor->be_private;
 602
 603         assert( mi != NULL );
 604         assert( e != NULL );
 605         assert( e->e_private == NULL );
 606
 607         if ( BER_BVISNULL( filter ) ) {
 608                 /* need a filter */
 609                 Debug( LDAP_DEBUG_ANY,
 610                         "monitor_back_register_entry_parent(\"\"): "
 611                         "need a valid filter\n",
 612                         0, 0, 0 );
 613                 return -1;
 614         }
 615
 616         if ( monitor_subsys_is_opened() ) {
 617                 Entry           *e_parent = NULL,
 618                                 *e_new = NULL,
 619                                 **ep = NULL;
 620                 struct berval   e_name = BER_BVNULL,
 621                                 e_nname = BER_BVNULL;
 622                 monitor_entry_t *mp = NULL,
 623                                 *mp_parent = NULL;
 624                 int             rc = 0;
 625
 626                 if ( monitor_search2ndn( nbase, scope, filter, &ndn ) ) {
 627                         /* entry does not exist */
 628                         Debug( LDAP_DEBUG_ANY,
 629                                 "monitor_back_register_entry_parent(\"\"): "
 630                                 "base=\"%s\" scope=%s filter=\"%s\": "
 631                                 "unable to find entry\n",
 632                                 nbase->bv_val ? nbase->bv_val : "\"\"",
 633                                 ldap_pvt_scope2str( scope ),
 634                                 filter->bv_val );
 635                         return -1;
 636                 }
 637
 638                 if ( monitor_cache_get( mi, &ndn, &e_parent ) != 0 ) {
 639                         /* entry does not exist */
 640                         Debug( LDAP_DEBUG_ANY,
 641                                 "monitor_back_register_entry_parent(\"%s\"): "
 642                                 "parent entry does not exist\n",
 643                                 ndn.bv_val, 0, 0 );
 644                         rc = -1;
 645                         goto done;
 646                 }
 647
 648                 assert( e_parent->e_private != NULL );
 649                 mp_parent = ( monitor_entry_t * )e_parent->e_private;
 650
 651                 if ( mp_parent->mp_flags & MONITOR_F_VOLATILE ) {
 652                         /* entry is volatile; cannot append callback */
 653                         Debug( LDAP_DEBUG_ANY,
 654                                 "monitor_back_register_entry_parent(\"%s\"): "
 655                                 "entry is volatile\n",
 656                                 e_parent->e_name.bv_val, 0, 0 );
 657                         rc = -1;
 658                         goto done;
 659                 }
 660
 661                 build_new_dn( &e_name, &e_parent->e_name, &e->e_name, NULL );
 662                 build_new_dn( &e_nname, &e_parent->e_nname, &e->e_nname, NULL );
 663
 664                 if ( monitor_cache_get( mi, &e_nname, &e_new ) == 0 ) {
 665                         /* entry already exists */
 666                         Debug( LDAP_DEBUG_ANY,
 667                                 "monitor_back_register_entry_parent(\"%s\"): "
 668                                 "entry already exists\n",
 669                                 e_name.bv_val, 0, 0 );
 670                         monitor_cache_release( mi, e_new );
 671                         e_new = NULL;
 672                         rc = -1;
 673                         goto done;
 674                 }
 675
 676                 mp = monitor_entrypriv_create();
 677                 if ( mp == NULL ) {
 678                         Debug( LDAP_DEBUG_ANY,
 679                                 "monitor_back_register_entry_parent(\"%s\"): "
 680                                 "monitor_entrypriv_create() failed\n",
 681                                 e->e_name.bv_val, 0, 0 );
 682                         rc = -1;
 683                         goto done;
 684                 }
 685
 686                 e_new = entry_dup( e );
 687                 if ( e_new == NULL ) {
 688                         Debug( LDAP_DEBUG_ANY,
 689                                 "monitor_back_register_entry(\"%s\"): "
 690                                 "entry_dup() failed\n",
 691                                 e->e_name.bv_val, 0, 0 );
 692                         rc = -1;
 693                         goto done;
 694                 }
 695                 ch_free( e_new->e_name.bv_val );
 696                 ch_free( e_new->e_nname.bv_val );
 697                 e_new->e_name = e_name;
 698                 e_new->e_nname = e_nname;
 699
 700                 e_new->e_private = ( void * )mp;
 701                 if ( mss != NULL ) {
 702                         mp->mp_info = mss;
 703                         mp->mp_flags = flags;
 704
 705                 } else {
 706                         mp->mp_info = mp_parent->mp_info;
 707                         mp->mp_flags = mp_parent->mp_flags | MONITOR_F_SUB;
 708                 }
 709                 mp->mp_cb = cb;
 710
 711                 ep = &mp_parent->mp_children;
 712                 for ( ; *ep; ) {
 713                         mp_parent = ( monitor_entry_t * )(*ep)->e_private;
 714                         ep = &mp_parent->mp_next;
 715                 }
 716                 *ep = e_new;
 717
 718                 if ( monitor_cache_add( mi, e_new ) ) {
 719                         Debug( LDAP_DEBUG_ANY,
 720                                 "monitor_back_register_entry(\"%s\"): "
 721                                 "unable to add entry\n",
 722                                 e->e_name.bv_val, 0, 0 );
 723                         rc = -1;
 724                         goto done;
 725                 }
 726
 727 done:;
 728                 if ( !BER_BVISNULL( &ndn ) ) {
 729                         ch_free( ndn.bv_val );
 730                 }
 731
 732                 if ( rc ) {
 733                         if ( mp ) {
 734                                 ch_free( mp );
 735                         }
 736                         if ( e_new ) {
 737                                 e_new->e_private = NULL;
 738                                 entry_free( e_new );
 739                         }
 740                 }
 741
 742                 if ( e_parent ) {
 743                         monitor_cache_release( mi, e_parent );
 744                 }
 745
 746         } else {
 747                 entry_limbo_t   **elpp = NULL, el = { 0 };
 748
 749                 el.el_type = LIMBO_ENTRY_PARENT;
 750
 751                 el.el_e = entry_dup( e );
 752                 if ( el.el_e == NULL ) {
 753                         Debug( LDAP_DEBUG_ANY,
 754                                 "monitor_back_register_entry(\"%s\"): "
 755                                 "entry_dup() failed\n",
 756                                 e->e_name.bv_val, 0, 0 );
 757                         goto done_limbo;
 758                 }
 759
 760                 if ( !BER_BVISNULL( nbase ) ) {
 761                         ber_dupbv( &el.el_nbase, nbase );
 762                 }
 763
 764                 el.el_scope = scope;
 765                 if ( !BER_BVISNULL( filter ) ) {
 766                         ber_dupbv( &el.el_filter, filter  );
 767                 }
 768
 769                 el.el_cb = cb;
 770                 el.el_mss = mss;
 771                 el.el_flags = flags;
 772
 773                 for ( elpp = &mi->mi_entry_limbo;
 774                                 *elpp;
 775                                 elpp = &(*elpp)->el_next )
 776                         /* go to last */;
 777
 778                 *elpp = (entry_limbo_t *)ch_malloc( sizeof( entry_limbo_t ) );
 779                 if ( *elpp == NULL ) {
 780                         goto done_limbo;
 781                 }
 782
 783 done_limbo:;
 784                 if ( *elpp != NULL ) {
 785                         el.el_next = NULL;
 786                         **elpp = el;
 787
 788                 } else {
 789                         if ( !BER_BVISNULL( &el.el_filter ) ) {
 790                                 ch_free( el.el_filter.bv_val );
 791                         }
 792                         if ( !BER_BVISNULL( &el.el_nbase ) ) {
 793                                 ch_free( el.el_nbase.bv_val );
 794                         }
 795                         entry_free( el.el_e );
 796                         return -1;
 797                 }
 798         }
 799
 800         return 0;
 801 }
 802
 803 static int
 804 monitor_search2ndn_cb( Operation *op, SlapReply *rs )
 805 {
 806         if ( rs->sr_type == REP_SEARCH ) {
 807                 struct berval   *ndn = op->o_callback->sc_private;
 808
 809                 if ( !BER_BVISNULL( ndn ) ) {
 810                         rs->sr_err = LDAP_SIZELIMIT_EXCEEDED;
 811                         ch_free( ndn->bv_val );
 812                         BER_BVZERO( ndn );
 813                         return rs->sr_err;
 814                 }
 815
 816                 ber_dupbv( ndn, &rs->sr_entry->e_nname );
 817         }
 818
 819         return 0;
 820 }
 821
 822 int
 823 monitor_search2ndn(
 824         struct berval   *nbase,
 825         int             scope,
 826         struct berval   *filter,
 827         struct berval   *ndn )
 828 {
 829         Connection      conn = { 0 };
 830         OperationBuffer opbuf;
 831         Operation       *op;
 832         void    *thrctx;
 833         SlapReply       rs = { REP_RESULT };
 834         slap_callback   cb = { NULL, monitor_search2ndn_cb, NULL, NULL };
 835         int             rc;
 836
 837         BER_BVZERO( ndn );
 838
 839         if ( be_monitor == NULL ) {
 840                 return -1;
 841         }
 842
 843         thrctx = ldap_pvt_thread_pool_context();
 844         connection_fake_init2( &conn, &opbuf, thrctx, 0 );
 845         op = &opbuf.ob_op;
 846
 847         op->o_tag = LDAP_REQ_SEARCH;
 848
 849         /* use global malloc for now */
 850         if ( op->o_tmpmemctx ) {
 851                 op->o_tmpmemctx = NULL;
 852         }
 853         op->o_tmpmfuncs = &ch_mfuncs;
 854
 855         op->o_bd = be_monitor;
 856         if ( nbase == NULL || BER_BVISNULL( nbase ) ) {
 857                 ber_dupbv_x( &op->o_req_dn, &op->o_bd->be_suffix[ 0 ],
 858                                 op->o_tmpmemctx );
 859                 ber_dupbv_x( &op->o_req_ndn, &op->o_bd->be_nsuffix[ 0 ],
 860                                 op->o_tmpmemctx );
 861
 862         } else {
 863                 if ( dnPrettyNormal( NULL, nbase, &op->o_req_dn, &op->o_req_ndn,
 864                                         op->o_tmpmemctx ) ) {
 865                         return -1;
 866                 }
 867         }
 868
 869         op->o_callback = &cb;
 870         cb.sc_private = (void *)ndn;
 871
 872         op->ors_scope = scope;
 873         op->ors_filter = str2filter_x( op, filter->bv_val );
 874         if ( op->ors_filter == NULL ) {
 875                 rc = LDAP_OTHER;
 876                 goto cleanup;
 877         }
 878         ber_dupbv_x( &op->ors_filterstr, filter, op->o_tmpmemctx );
 879         op->ors_attrs = slap_anlist_no_attrs;
 880         op->ors_attrsonly = 0;
 881         op->ors_tlimit = SLAP_NO_LIMIT;
 882         op->ors_slimit = 1;
 883         op->ors_limit = NULL;
 884         op->ors_deref = LDAP_DEREF_NEVER;
 885
 886         op->o_nocaching = 1;
 887         op->o_managedsait = SLAP_CONTROL_NONCRITICAL;
 888
 889         op->o_dn = be_monitor->be_rootdn;
 890         op->o_ndn = be_monitor->be_rootndn;
 891
 892         rc = op->o_bd->be_search( op, &rs );
 893
 894 cleanup:;
 895         if ( op->ors_filter != NULL ) {
 896                 filter_free_x( op, op->ors_filter, 1 );
 897         }
 898         if ( !BER_BVISNULL( &op->ors_filterstr ) ) {
 899                 op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
 900         }
 901         if ( !BER_BVISNULL( &op->o_req_dn ) ) {
 902                 op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx );
 903         }
 904         if ( !BER_BVISNULL( &op->o_req_ndn ) ) {
 905                 op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
 906         }
 907
 908         if ( rc != 0 ) {
 909                 return rc;
 910         }
 911
 912         switch ( rs.sr_err ) {
 913         case LDAP_SUCCESS:
 914                 if ( BER_BVISNULL( ndn ) ) {
 915                         rc = -1;
 916                 }
 917                 break;
 918
 919         case LDAP_SIZELIMIT_EXCEEDED:
 920         default:
 921                 if ( !BER_BVISNULL( ndn ) ) {
 922                         ber_memfree( ndn->bv_val );
 923                         BER_BVZERO( ndn );
 924                 }
 925                 rc = -1;
 926                 break;
 927         }
 928
 929         return rc;
 930 }
 931
 932 int
 933 monitor_back_register_entry_attrs(
 934         struct berval           *ndn_in,
 935         Attribute               *a,
 936         monitor_callback_t      *cb,
 937         struct berval           *nbase,
 938         int                     scope,
 939         struct berval           *filter )
 940 {
 941         monitor_info_t  *mi;
 942         struct berval   ndn = BER_BVNULL;
 943         char            *fname = ( a == NULL ? "callback" : "attrs" );
 944         struct berval   empty_bv = BER_BVC("");
 945
 946         if ( nbase == NULL ) nbase = &empty_bv;
 947         if ( filter == NULL ) filter = &empty_bv;
 948
 949         if ( be_monitor == NULL ) {
 950                 char            buf[ SLAP_TEXT_BUFLEN ];
 951
 952                 snprintf( buf, sizeof( buf ),
 953                         "monitor_back_register_entry_%s(base=\"%s\" scope=%s filter=\"%s\"): "
 954                         "monitor database not configured.\n",
 955                         fname,
 956                         BER_BVISNULL( nbase ) ? "" : nbase->bv_val,
 957                         ldap_pvt_scope2str( scope ),
 958                         BER_BVISNULL( filter ) ? "" : filter->bv_val );
 959                 Debug( LDAP_DEBUG_ANY, "%s\n", buf, 0, 0 );
 960
 961                 return -1;
 962         }
 963
 964         mi = ( monitor_info_t * )be_monitor->be_private;
 965
 966         assert( mi != NULL );
 967
 968         if ( ndn_in != NULL ) {
 969                 ndn = *ndn_in;
 970         }
 971
 972         if ( a == NULL && cb == NULL ) {
 973                 /* nothing to do */
 974                 return -1;
 975         }
 976
 977         if ( ( ndn_in == NULL || BER_BVISNULL( &ndn ) )
 978                         && BER_BVISNULL( filter ) )
 979         {
 980                 /* need a filter */
 981                 Debug( LDAP_DEBUG_ANY,
 982                         "monitor_back_register_entry_%s(\"\"): "
 983                         "need a valid filter\n",
 984                         fname, 0, 0 );
 985                 return -1;
 986         }
 987
 988         if ( monitor_subsys_is_opened() ) {
 989                 Entry                   *e = NULL;
 990                 Attribute               **atp = NULL;
 991                 monitor_entry_t         *mp = NULL;
 992                 monitor_callback_t      **mcp = NULL;
 993                 int                     rc = 0;
 994                 int                     freeit = 0;
 995
 996                 if ( BER_BVISNULL( &ndn ) ) {
 997                         if ( monitor_search2ndn( nbase, scope, filter, &ndn ) ) {
 998                                 char            buf[ SLAP_TEXT_BUFLEN ];
 999
1000                                 snprintf( buf, sizeof( buf ),
1001                                         "monitor_back_register_entry_%s(\"\"): "
1002                                         "base=\"%s\" scope=%s filter=\"%s\": "
1003                                         "unable to find entry\n",
1004                                         fname,
1005                                         nbase->bv_val ? nbase->bv_val : "\"\"",
1006                                         ldap_pvt_scope2str( scope ),
1007                                         filter->bv_val );
1008
1009                                 /* entry does not exist */
1010                                 Debug( LDAP_DEBUG_ANY, "%s\n", buf, 0, 0 );
1011                                 return -1;
1012                         }
1013
1014                         freeit = 1;
1015                 }
1016
1017                 if ( monitor_cache_get( mi, &ndn, &e ) != 0 ) {
1018                         /* entry does not exist */
1019                         Debug( LDAP_DEBUG_ANY,
1020                                 "monitor_back_register_entry_%s(\"%s\"): "
1021                                 "entry does not exist\n",
1022                                 fname, ndn.bv_val, 0 );
1023                         rc = -1;
1024                         goto done;
1025                 }
1026
1027                 assert( e->e_private != NULL );
1028                 mp = ( monitor_entry_t * )e->e_private;
1029
1030                 if ( mp->mp_flags & MONITOR_F_VOLATILE ) {
1031                         /* entry is volatile; cannot append callback */
1032                         Debug( LDAP_DEBUG_ANY,
1033                                 "monitor_back_register_entry_%s(\"%s\"): "
1034                                 "entry is volatile\n",
1035                                 fname, e->e_name.bv_val, 0 );
1036                         rc = -1;
1037                         goto done;
1038                 }
1039
1040                 if ( a ) {
1041                         for ( atp = &e->e_attrs; *atp; atp = &(*atp)->a_next )
1042                                 /* just get to last */ ;
1043
1044                         for ( ; a != NULL; a = a->a_next ) {
1045                                 assert( a->a_desc != NULL );
1046                                 assert( a->a_vals != NULL );
1047
1048                                 if ( attr_find( e->e_attrs, a->a_desc ) ) {
1049                                         attr_merge( e, a->a_desc, a->a_vals,
1050                                                 a->a_nvals == a->a_vals ? NULL : a->a_nvals );
1051
1052                                 } else {
1053                                         *atp = attr_dup( a );
1054                                         if ( *atp == NULL ) {
1055                                                 Debug( LDAP_DEBUG_ANY,
1056                                                         "monitor_back_register_entry_%s(\"%s\"): "
1057                                                         "attr_dup() failed\n",
1058                                                         fname, e->e_name.bv_val, 0 );
1059                                                 rc = -1;
1060                                                 goto done;
1061                                         }
1062                                         atp = &(*atp)->a_next;
1063                                 }
1064                         }
1065                 }
1066
1067                 if ( cb ) {
1068                         for ( mcp = &mp->mp_cb; *mcp; mcp = &(*mcp)->mc_next )
1069                                 /* go to tail */ ;
1070
1071                         /* NOTE: we do not clear cb->mc_next, so this function
1072                          * can be used to append a list of callbacks */
1073                         (*mcp) = cb;
1074                 }
1075
1076 done:;
1077                 if ( rc ) {
1078                         if ( atp && *atp ) {
1079                                 attrs_free( *atp );
1080                                 *atp = NULL;
1081                         }
1082                 }
1083
1084                 if ( freeit ) {
1085                         ber_memfree( ndn.bv_val );
1086                 }
1087
1088                 if ( e ) {
1089                         monitor_cache_release( mi, e );
1090                 }
1091
1092         } else {
1093                 entry_limbo_t   **elpp, el = { 0 };
1094
1095                 el.el_type = LIMBO_ATTRS;
1096                 el.el_ndn = ndn_in;
1097                 if ( !BER_BVISNULL( nbase ) ) {
1098                         ber_dupbv( &el.el_nbase, nbase);
1099                 }
1100                 el.el_scope = scope;
1101                 if ( !BER_BVISNULL( filter ) ) {
1102                         ber_dupbv( &el.el_filter, filter  );
1103                 }
1104
1105                 el.el_a = attrs_dup( a );
1106                 el.el_cb = cb;
1107
1108                 for ( elpp = &mi->mi_entry_limbo;
1109                                 *elpp;
1110                                 elpp = &(*elpp)->el_next )
1111                         /* go to last */;
1112
1113                 *elpp = (entry_limbo_t *)ch_malloc( sizeof( entry_limbo_t ) );
1114                 if ( *elpp == NULL ) {
1115                         if ( !BER_BVISNULL( &el.el_filter ) ) {
1116                                 ch_free( el.el_filter.bv_val );
1117                         }
1118                         if ( el.el_a != NULL ) {
1119                                 attrs_free( el.el_a );
1120                         }
1121                         if ( !BER_BVISNULL( &el.el_nbase ) ) {
1122                                 ch_free( &el.el_nbase.bv_val );
1123                         }
1124                         return -1;
1125                 }
1126
1127                 el.el_next = NULL;
1128                 **elpp = el;
1129         }
1130
1131         return 0;
1132 }
1133
1134 int
1135 monitor_back_register_entry_callback(
1136         struct berval           *ndn,
1137         monitor_callback_t      *cb,
1138         struct berval           *nbase,
1139         int                     scope,
1140         struct berval           *filter )
1141 {
1142         return monitor_back_register_entry_attrs( ndn, NULL, cb,
1143                         nbase, scope, filter );
1144 }
1145
1146 /*
1147  * TODO: add corresponding calls to remove installed callbacks, entries
1148  * and so, in case the entity that installed them is removed (e.g. a
1149  * database, via back-config)
1150  */
1151 int
1152 monitor_back_unregister_entry(
1153         struct berval   *ndn )
1154 {
1155         monitor_info_t  *mi;
1156
1157         if ( be_monitor == NULL ) {
1158                 Debug( LDAP_DEBUG_ANY,
1159                         "monitor_back_unregister_entry(\"%s\"): "
1160                         "monitor database not configured.\n",
1161                         ndn->bv_val, 0, 0 );
1162
1163                 return -1;
1164         }
1165
1166         /* entry will be regularly freed, and resources released
1167          * according to callbacks */
1168         if ( slapd_shutdown ) {
1169                 return 0;
1170         }
1171
1172         mi = ( monitor_info_t * )be_monitor->be_private;
1173
1174         assert( mi != NULL );
1175
1176         if ( monitor_subsys_is_opened() ) {
1177                 Entry                   *e = NULL;
1178                 monitor_entry_t         *mp = NULL;
1179                 monitor_callback_t      *cb = NULL;
1180
1181                 if ( monitor_cache_remove( mi, ndn, &e ) != 0 ) {
1182                         /* entry does not exist */
1183                         Debug( LDAP_DEBUG_ANY,
1184                                 "monitor_back_unregister_entry(\"%s\"): "
1185                                 "entry removal failed.\n",
1186                                 ndn->bv_val, 0, 0 );
1187                         return -1;
1188                 }
1189
1190                 mp = (monitor_entry_t *)e->e_private;
1191                 assert( mp != NULL );
1192
1193                 for ( cb = mp->mp_cb; cb != NULL; ) {
1194                         monitor_callback_t      *next = cb->mc_next;
1195
1196                         if ( cb->mc_free ) {
1197                                 (void)cb->mc_free( e, &cb->mc_private );
1198                         }
1199                         ch_free( cb );
1200
1201                         cb = next;
1202                 }
1203
1204                 ch_free( mp );
1205                 e->e_private = NULL;
1206                 entry_free( e );
1207
1208         } else {
1209                 entry_limbo_t   **elpp;
1210
1211                 for ( elpp = &mi->mi_entry_limbo;
1212                         *elpp;
1213                         elpp = &(*elpp)->el_next )
1214                 {
1215                         entry_limbo_t   *elp = *elpp;
1216
1217                         if ( elp->el_type == LIMBO_ENTRY
1218                                 && dn_match( ndn, &elp->el_e->e_nname ) )
1219                         {
1220                                 monitor_callback_t      *cb, *next;
1221
1222                                 for ( cb = elp->el_cb; cb; cb = next ) {
1223                                         /* FIXME: call callbacks? */
1224                                         next = cb->mc_next;
1225                                         if ( cb->mc_dispose ) {
1226                                                 cb->mc_dispose( &cb->mc_private );
1227                                         }
1228                                         ch_free( cb );
1229                                 }
1230                                 assert( elp->el_e != NULL );
1231                                 elp->el_e->e_private = NULL;
1232                                 entry_free( elp->el_e );
1233                                 *elpp = elp->el_next;
1234                                 ch_free( elp );
1235                                 elpp = NULL;
1236                                 break;
1237                         }
1238                 }
1239
1240                 if ( elpp != NULL ) {
1241                         /* not found!  where did it go? */
1242                         return 1;
1243                 }
1244         }
1245
1246         return 0;
1247 }
1248
1249 int
1250 monitor_back_unregister_entry_parent(
1251         struct berval           *nrdn,
1252         monitor_callback_t      *target_cb,
1253         struct berval           *nbase,
1254         int                     scope,
1255         struct berval           *filter )
1256 {
1257         monitor_info_t  *mi;
1258         struct berval   ndn = BER_BVNULL;
1259
1260         if ( be_monitor == NULL ) {
1261                 Debug( LDAP_DEBUG_ANY,
1262                         "monitor_back_unregister_entry_parent(base=\"%s\" scope=%s filter=\"%s\"): "
1263                         "monitor database not configured.\n",
1264                         BER_BVISNULL( nbase ) ? "" : nbase->bv_val,
1265                         ldap_pvt_scope2str( scope ),
1266                         BER_BVISNULL( filter ) ? "" : filter->bv_val );
1267
1268                 return -1;
1269         }
1270
1271         /* entry will be regularly freed, and resources released
1272          * according to callbacks */
1273         if ( slapd_shutdown ) {
1274                 return 0;
1275         }
1276
1277         mi = ( monitor_info_t * )be_monitor->be_private;
1278
1279         assert( mi != NULL );
1280
1281         if ( ( nrdn == NULL || BER_BVISNULL( nrdn ) )
1282                         && BER_BVISNULL( filter ) )
1283         {
1284                 /* need a filter */
1285                 Debug( LDAP_DEBUG_ANY,
1286                         "monitor_back_unregister_entry_parent(\"\"): "
1287                         "need a valid filter\n",
1288                         0, 0, 0 );
1289                 return -1;
1290         }
1291
1292         if ( monitor_subsys_is_opened() ) {
1293                 Entry                   *e = NULL;
1294                 monitor_entry_t         *mp = NULL;
1295
1296                 if ( monitor_search2ndn( nbase, scope, filter, &ndn ) ) {
1297                         /* entry does not exist */
1298                         Debug( LDAP_DEBUG_ANY,
1299                                 "monitor_back_unregister_entry_parent(\"\"): "
1300                                 "base=\"%s\" scope=%s filter=\"%s\": "
1301                                 "unable to find entry\n",
1302                                 nbase->bv_val ? nbase->bv_val : "\"\"",
1303                                 ldap_pvt_scope2str( scope ),
1304                                 filter->bv_val );
1305                         return -1;
1306                 }
1307
1308                 if ( monitor_cache_remove( mi, &ndn, &e ) != 0 ) {
1309                         /* entry does not exist */
1310                         Debug( LDAP_DEBUG_ANY,
1311                                 "monitor_back_unregister_entry(\"%s\"): "
1312                                 "entry removal failed.\n",
1313                                 ndn.bv_val, 0, 0 );
1314                         ber_memfree( ndn.bv_val );
1315                         return -1;
1316                 }
1317                 ber_memfree( ndn.bv_val );
1318
1319                 mp = (monitor_entry_t *)e->e_private;
1320                 assert( mp != NULL );
1321
1322                 if ( target_cb != NULL ) {
1323                         monitor_callback_t      **cbp;
1324
1325                         for ( cbp = &mp->mp_cb; *cbp != NULL; cbp = &(*cbp)->mc_next ) {
1326                                 if ( *cbp == target_cb ) {
1327                                         if ( (*cbp)->mc_free ) {
1328                                                 (void)(*cbp)->mc_free( e, &(*cbp)->mc_private );
1329                                         }
1330                                         *cbp = (*cbp)->mc_next;
1331                                         ch_free( target_cb );
1332                                         break;
1333                                 }
1334                         }
1335                 }
1336
1337
1338                 ch_free( mp );
1339                 e->e_private = NULL;
1340                 entry_free( e );
1341
1342         } else {
1343                 entry_limbo_t   **elpp;
1344
1345                 for ( elpp = &mi->mi_entry_limbo;
1346                         *elpp;
1347                         elpp = &(*elpp)->el_next )
1348                 {
1349                         entry_limbo_t   *elp = *elpp;
1350
1351                         if ( elp->el_type == LIMBO_ENTRY_PARENT
1352                                 && dn_match( nrdn, &elp->el_e->e_nname )
1353                                 && dn_match( nbase, &elp->el_nbase )
1354                                 && scope == elp->el_scope
1355                                 && bvmatch( filter, &elp->el_filter ) )
1356                         {
1357                                 monitor_callback_t      *cb, *next;
1358
1359                                 for ( cb = elp->el_cb; cb; cb = next ) {
1360                                         /* FIXME: call callbacks? */
1361                                         next = cb->mc_next;
1362                                         if ( cb->mc_dispose ) {
1363                                                 cb->mc_dispose( &cb->mc_private );
1364                                         }
1365                                         ch_free( cb );
1366                                 }
1367                                 assert( elp->el_e != NULL );
1368                                 elp->el_e->e_private = NULL;
1369                                 entry_free( elp->el_e );
1370                                 if ( !BER_BVISNULL( &elp->el_nbase ) ) {
1371                                         ch_free( elp->el_nbase.bv_val );
1372                                 }
1373                                 if ( !BER_BVISNULL( &elp->el_filter ) ) {
1374                                         ch_free( elp->el_filter.bv_val );
1375                                 }
1376                                 *elpp = elp->el_next;
1377                                 ch_free( elp );
1378                                 elpp = NULL;
1379                                 break;
1380                         }
1381                 }
1382
1383                 if ( elpp != NULL ) {
1384                         /* not found!  where did it go? */
1385                         return 1;
1386                 }
1387         }
1388
1389         return 0;
1390 }
1391
1392 int
1393 monitor_back_unregister_entry_attrs(
1394         struct berval           *ndn_in,
1395         Attribute               *target_a,
1396         monitor_callback_t      *target_cb,
1397         struct berval           *nbase,
1398         int                     scope,
1399         struct berval           *filter )
1400 {
1401         monitor_info_t  *mi;
1402         struct berval   ndn = BER_BVNULL;
1403         char            *fname = ( target_a == NULL ? "callback" : "attrs" );
1404
1405         if ( be_monitor == NULL ) {
1406                 char            buf[ SLAP_TEXT_BUFLEN ];
1407
1408                 snprintf( buf, sizeof( buf ),
1409                         "monitor_back_unregister_entry_%s(base=\"%s\" scope=%s filter=\"%s\"): "
1410                         "monitor database not configured.\n",
1411                         fname,
1412                         BER_BVISNULL( nbase ) ? "" : nbase->bv_val,
1413                         ldap_pvt_scope2str( scope ),
1414                         BER_BVISNULL( filter ) ? "" : filter->bv_val );
1415                 Debug( LDAP_DEBUG_ANY, "%s\n", buf, 0, 0 );
1416
1417                 return -1;
1418         }
1419
1420         /* entry will be regularly freed, and resources released
1421          * according to callbacks */
1422         if ( slapd_shutdown ) {
1423                 return 0;
1424         }
1425
1426         mi = ( monitor_info_t * )be_monitor->be_private;
1427
1428         assert( mi != NULL );
1429
1430         if ( ndn_in != NULL ) {
1431                 ndn = *ndn_in;
1432         }
1433
1434         if ( target_a == NULL && target_cb == NULL ) {
1435                 /* nothing to do */
1436                 return -1;
1437         }
1438
1439         if ( ( ndn_in == NULL || BER_BVISNULL( &ndn ) )
1440                         && BER_BVISNULL( filter ) )
1441         {
1442                 /* need a filter */
1443                 Debug( LDAP_DEBUG_ANY,
1444                         "monitor_back_unregister_entry_%s(\"\"): "
1445                         "need a valid filter\n",
1446                         fname, 0, 0 );
1447                 return -1;
1448         }
1449
1450         if ( monitor_subsys_is_opened() ) {
1451                 Entry                   *e = NULL;
1452                 monitor_entry_t         *mp = NULL;
1453                 int                     freeit = 0;
1454
1455                 if ( BER_BVISNULL( &ndn ) ) {
1456                         if ( monitor_search2ndn( nbase, scope, filter, &ndn ) ) {
1457                                 char            buf[ SLAP_TEXT_BUFLEN ];
1458
1459                                 snprintf( buf, sizeof( buf ),
1460                                         "monitor_back_unregister_entry_%s(\"\"): "
1461                                         "base=\"%s\" scope=%d filter=\"%s\": "
1462                                         "unable to find entry\n",
1463                                         fname,
1464                                         nbase->bv_val ? nbase->bv_val : "\"\"",
1465                                         scope, filter->bv_val );
1466
1467                                 /* entry does not exist */
1468                                 Debug( LDAP_DEBUG_ANY, "%s\n", buf, 0, 0 );
1469                                 return -1;
1470                         }
1471
1472                         freeit = 1;
1473                 }
1474
1475                 if ( monitor_cache_get( mi, &ndn, &e ) != 0 ) {
1476                         /* entry does not exist */
1477                         Debug( LDAP_DEBUG_ANY,
1478                                 "monitor_back_unregister_entry(\"%s\"): "
1479                                 "entry removal failed.\n",
1480                                 ndn.bv_val, 0, 0 );
1481                         return -1;
1482                 }
1483
1484                 mp = (monitor_entry_t *)e->e_private;
1485                 assert( mp != NULL );
1486
1487                 if ( target_cb != NULL ) {
1488                         monitor_callback_t      **cbp;
1489
1490                         for ( cbp = &mp->mp_cb; *cbp != NULL; cbp = &(*cbp)->mc_next ) {
1491                                 if ( *cbp == target_cb ) {
1492                                         if ( (*cbp)->mc_free ) {
1493                                                 (void)(*cbp)->mc_free( e, &(*cbp)->mc_private );
1494                                         }
1495                                         *cbp = (*cbp)->mc_next;
1496                                         ch_free( target_cb );
1497                                         break;
1498                                 }
1499                         }
1500                 }
1501
1502                 if ( target_a != NULL ) {
1503                         Attribute       *a;
1504
1505                         for ( a = target_a; a != NULL; a = a->a_next ) {
1506                                 Modification    mod = { 0 };
1507                                 const char      *text;
1508                                 char            textbuf[ SLAP_TEXT_BUFLEN ];
1509
1510                                 mod.sm_op = LDAP_MOD_DELETE;
1511                                 mod.sm_desc = a->a_desc;
1512                                 mod.sm_values = a->a_vals;
1513                                 mod.sm_nvalues = a->a_nvals;
1514
1515                                 (void)modify_delete_values( e, &mod, 1,
1516                                         &text, textbuf, sizeof( textbuf ) );
1517                         }
1518                 }
1519
1520                 if ( freeit ) {
1521                         ber_memfree( ndn.bv_val );
1522                 }
1523
1524                 monitor_cache_release( mi, e );
1525
1526         } else {
1527                 entry_limbo_t   **elpp;
1528
1529                 for ( elpp = &mi->mi_entry_limbo;
1530                         *elpp;
1531                         elpp = &(*elpp)->el_next )
1532                 {
1533                         entry_limbo_t   *elp = *elpp;
1534
1535                         if ( elp->el_type == LIMBO_ATTRS
1536                                 && dn_match( nbase, &elp->el_nbase )
1537                                 && scope == elp->el_scope
1538                                 && bvmatch( filter, &elp->el_filter ) )
1539                         {
1540                                 monitor_callback_t      *cb, *next;
1541
1542                                 for ( cb = elp->el_cb; cb; cb = next ) {
1543                                         /* FIXME: call callbacks? */
1544                                         next = cb->mc_next;
1545                                         if ( cb->mc_dispose ) {
1546                                                 cb->mc_dispose( &cb->mc_private );
1547                                         }
1548                                         ch_free( cb );
1549                                 }
1550                                 assert( elp->el_e == NULL );
1551                                 if ( elp->el_a != NULL ) {
1552                                         attrs_free( elp->el_a );
1553                                 }
1554                                 if ( !BER_BVISNULL( &elp->el_nbase ) ) {
1555                                         ch_free( elp->el_nbase.bv_val );
1556                                 }
1557                                 if ( !BER_BVISNULL( &elp->el_filter ) ) {
1558                                         ch_free( elp->el_filter.bv_val );
1559                                 }
1560                                 *elpp = elp->el_next;
1561                                 ch_free( elp );
1562                                 elpp = NULL;
1563                                 break;
1564                         }
1565                 }
1566
1567                 if ( elpp != NULL ) {
1568                         /* not found!  where did it go? */
1569                         return 1;
1570                 }
1571         }
1572
1573         return 0;
1574 }
1575
1576 int
1577 monitor_back_unregister_entry_callback(
1578         struct berval           *ndn,
1579         monitor_callback_t      *cb,
1580         struct berval           *nbase,
1581         int                     scope,
1582         struct berval           *filter )
1583 {
1584         /* TODO: lookup entry (by ndn, if not NULL, and/or by callback);
1585          * unregister the callback; if a is not null, unregister the
1586          * given attrs.  In any case, call cb->cb_free */
1587         return monitor_back_unregister_entry_attrs( ndn,
1588                 NULL, cb, nbase, scope, filter );
1589 }
1590
1591 monitor_subsys_t *
1592 monitor_back_get_subsys( const char *name )
1593 {
1594         if ( monitor_subsys != NULL ) {
1595                 int     i;
1596
1597                 for ( i = 0; monitor_subsys[ i ] != NULL; i++ ) {
1598                         if ( strcasecmp( monitor_subsys[ i ]->mss_name, name ) == 0 ) {
1599                                 return monitor_subsys[ i ];
1600                         }
1601                 }
1602         }
1603
1604         return NULL;
1605 }
1606
1607 monitor_subsys_t *
1608 monitor_back_get_subsys_by_dn(
1609         struct berval   *ndn,
1610         int             sub )
1611 {
1612         if ( monitor_subsys != NULL ) {
1613                 int     i;
1614
1615                 if ( sub ) {
1616                         for ( i = 0; monitor_subsys[ i ] != NULL; i++ ) {
1617                                 if ( dnIsSuffix( ndn, &monitor_subsys[ i ]->mss_ndn ) ) {
1618                                         return monitor_subsys[ i ];
1619                                 }
1620                         }
1621
1622                 } else {
1623                         for ( i = 0; monitor_subsys[ i ] != NULL; i++ ) {
1624                                 if ( dn_match( ndn, &monitor_subsys[ i ]->mss_ndn ) ) {
1625                                         return monitor_subsys[ i ];
1626                                 }
1627                         }
1628                 }
1629         }
1630
1631         return NULL;
1632 }
1633
1634 int
1635 monitor_back_initialize(
1636         BackendInfo     *bi )
1637 {
1638         static char             *controls[] = {
1639                 LDAP_CONTROL_MANAGEDSAIT,
1640                 NULL
1641         };
1642
1643         static ConfigTable monitorcfg[] = {
1644                 { NULL, NULL, 0, 0, 0, ARG_IGNORED,
1645                         NULL, NULL, NULL, NULL }
1646         };
1647
1648         static ConfigOCs monitorocs[] = {
1649                 { "( OLcfgDbOc:4.1 "
1650                         "NAME 'olcMonitorConfig' "
1651                         "DESC 'Monitor backend configuration' "
1652                         "SUP olcDatabaseConfig "
1653                         ")",
1654                                 Cft_Database, monitorcfg },
1655                 { NULL, 0, NULL }
1656         };
1657
1658         struct m_s {
1659                 char    *schema;
1660                 slap_mask_t flags;
1661                 int     offset;
1662         } moc[] = {
1663                 { "( 1.3.6.1.4.1.4203.666.3.16.1 "
1664                         "NAME 'monitor' "
1665                         "DESC 'OpenLDAP system monitoring' "
1666                         "SUP top STRUCTURAL "
1667                         "MUST cn "
1668                         "MAY ( "
1669                                 "description "
1670                                 "$ seeAlso "
1671                                 "$ labeledURI "
1672                                 "$ monitoredInfo "
1673                                 "$ managedInfo "
1674                                 "$ monitorOverlay "
1675                         ") )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
1676                         offsetof(monitor_info_t, mi_oc_monitor) },
1677                 { "( 1.3.6.1.4.1.4203.666.3.16.2 "
1678                         "NAME 'monitorServer' "
1679                         "DESC 'Server monitoring root entry' "
1680                         "SUP monitor STRUCTURAL )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
1681                         offsetof(monitor_info_t, mi_oc_monitorServer) },
1682                 { "( 1.3.6.1.4.1.4203.666.3.16.3 "
1683                         "NAME 'monitorContainer' "
1684                         "DESC 'monitor container class' "
1685                         "SUP monitor STRUCTURAL )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
1686                         offsetof(monitor_info_t, mi_oc_monitorContainer) },
1687                 { "( 1.3.6.1.4.1.4203.666.3.16.4 "
1688                         "NAME 'monitorCounterObject' "
1689                         "DESC 'monitor counter class' "
1690                         "SUP monitor STRUCTURAL )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
1691                         offsetof(monitor_info_t, mi_oc_monitorCounterObject) },
1692                 { "( 1.3.6.1.4.1.4203.666.3.16.5 "
1693                         "NAME 'monitorOperation' "
1694                         "DESC 'monitor operation class' "
1695                         "SUP monitor STRUCTURAL )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
1696                         offsetof(monitor_info_t, mi_oc_monitorOperation) },
1697                 { "( 1.3.6.1.4.1.4203.666.3.16.6 "
1698                         "NAME 'monitorConnection' "
1699                         "DESC 'monitor connection class' "
1700                         "SUP monitor STRUCTURAL )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
1701                         offsetof(monitor_info_t, mi_oc_monitorConnection) },
1702                 { "( 1.3.6.1.4.1.4203.666.3.16.7 "
1703                         "NAME 'managedObject' "
1704                         "DESC 'monitor managed entity class' "
1705                         "SUP monitor STRUCTURAL )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
1706                         offsetof(monitor_info_t, mi_oc_managedObject) },
1707                 { "( 1.3.6.1.4.1.4203.666.3.16.8 "
1708                         "NAME 'monitoredObject' "
1709                         "DESC 'monitor monitored entity class' "
1710                         "SUP monitor STRUCTURAL )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
1711                         offsetof(monitor_info_t, mi_oc_monitoredObject) },
1712                 { NULL, 0, -1 }
1713         }, mat[] = {
1714                 { "( 1.3.6.1.4.1.4203.666.1.55.1 "
1715                         "NAME 'monitoredInfo' "
1716                         "DESC 'monitored info' "
1717                         /* "SUP name " */
1718                         "EQUALITY caseIgnoreMatch "
1719                         "SUBSTR caseIgnoreSubstringsMatch "
1720                         "SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{32768} "
1721                         "NO-USER-MODIFICATION "
1722                         "USAGE dSAOperation )", SLAP_AT_HIDE,
1723                         offsetof(monitor_info_t, mi_ad_monitoredInfo) },
1724                 { "( 1.3.6.1.4.1.4203.666.1.55.2 "
1725                         "NAME 'managedInfo' "
1726                         "DESC 'monitor managed info' "
1727                         "SUP name )", SLAP_AT_HIDE,
1728                         offsetof(monitor_info_t, mi_ad_managedInfo) },
1729                 { "( 1.3.6.1.4.1.4203.666.1.55.3 "
1730                         "NAME 'monitorCounter' "
1731                         "DESC 'monitor counter' "
1732                         "EQUALITY integerMatch "
1733                         "ORDERING integerOrderingMatch "
1734                         "SYNTAX 1.3.6.1.4.1.1466.115.121.1.27 "
1735                         "NO-USER-MODIFICATION "
1736                         "USAGE dSAOperation )", SLAP_AT_HIDE,
1737                         offsetof(monitor_info_t, mi_ad_monitorCounter) },
1738                 { "( 1.3.6.1.4.1.4203.666.1.55.4 "
1739                         "NAME 'monitorOpCompleted' "
1740                         "DESC 'monitor completed operations' "
1741                         "SUP monitorCounter "
1742                         "NO-USER-MODIFICATION "
1743                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1744                         offsetof(monitor_info_t, mi_ad_monitorOpCompleted) },
1745                 { "( 1.3.6.1.4.1.4203.666.1.55.5 "
1746                         "NAME 'monitorOpInitiated' "
1747                         "DESC 'monitor initiated operations' "
1748                         "SUP monitorCounter "
1749                         "NO-USER-MODIFICATION "
1750                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1751                         offsetof(monitor_info_t, mi_ad_monitorOpInitiated) },
1752                 { "( 1.3.6.1.4.1.4203.666.1.55.6 "
1753                         "NAME 'monitorConnectionNumber' "
1754                         "DESC 'monitor connection number' "
1755                         "SUP monitorCounter "
1756                         "NO-USER-MODIFICATION "
1757                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1758                         offsetof(monitor_info_t, mi_ad_monitorConnectionNumber) },
1759                 { "( 1.3.6.1.4.1.4203.666.1.55.7 "
1760                         "NAME 'monitorConnectionAuthzDN' "
1761                         "DESC 'monitor connection authorization DN' "
1762                         /* "SUP distinguishedName " */
1763                         "EQUALITY distinguishedNameMatch "
1764                         "SYNTAX 1.3.6.1.4.1.1466.115.121.1.12 "
1765                         "NO-USER-MODIFICATION "
1766                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1767                         offsetof(monitor_info_t, mi_ad_monitorConnectionAuthzDN) },
1768                 { "( 1.3.6.1.4.1.4203.666.1.55.8 "
1769                         "NAME 'monitorConnectionLocalAddress' "
1770                         "DESC 'monitor connection local address' "
1771                         "SUP monitoredInfo "
1772                         "NO-USER-MODIFICATION "
1773                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1774                         offsetof(monitor_info_t, mi_ad_monitorConnectionLocalAddress) },
1775                 { "( 1.3.6.1.4.1.4203.666.1.55.9 "
1776                         "NAME 'monitorConnectionPeerAddress' "
1777                         "DESC 'monitor connection peer address' "
1778                         "SUP monitoredInfo "
1779                         "NO-USER-MODIFICATION "
1780                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1781                         offsetof(monitor_info_t, mi_ad_monitorConnectionPeerAddress) },
1782                 { "( 1.3.6.1.4.1.4203.666.1.55.10 "
1783                         "NAME 'monitorTimestamp' "
1784                         "DESC 'monitor timestamp' "
1785                         "EQUALITY generalizedTimeMatch "
1786                         "ORDERING generalizedTimeOrderingMatch "
1787                         "SYNTAX 1.3.6.1.4.1.1466.115.121.1.24 "
1788                         "SINGLE-VALUE "
1789                         "NO-USER-MODIFICATION "
1790                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1791                         offsetof(monitor_info_t, mi_ad_monitorTimestamp) },
1792                 { "( 1.3.6.1.4.1.4203.666.1.55.11 "
1793                         "NAME 'monitorOverlay' "
1794                         "DESC 'name of overlays defined for a given database' "
1795                         "SUP monitoredInfo "
1796                         "NO-USER-MODIFICATION "
1797                         "USAGE dSAOperation )", SLAP_AT_HIDE,
1798                         offsetof(monitor_info_t, mi_ad_monitorOverlay) },
1799                 { "( 1.3.6.1.4.1.4203.666.1.55.12 "
1800                         "NAME 'readOnly' "
1801                         "DESC 'read/write status of a given database' "
1802                         "EQUALITY booleanMatch "
1803                         "SYNTAX 1.3.6.1.4.1.1466.115.121.1.7 "
1804                         "SINGLE-VALUE "
1805                         "USAGE dSAOperation )", SLAP_AT_HIDE,
1806                         offsetof(monitor_info_t, mi_ad_readOnly) },
1807                 { "( 1.3.6.1.4.1.4203.666.1.55.13 "
1808                         "NAME 'restrictedOperation' "
1809                         "DESC 'name of restricted operation for a given database' "
1810                         "SUP managedInfo )", SLAP_AT_HIDE,
1811                         offsetof(monitor_info_t, mi_ad_restrictedOperation ) },
1812                 { "( 1.3.6.1.4.1.4203.666.1.55.14 "
1813                         "NAME 'monitorConnectionProtocol' "
1814                         "DESC 'monitor connection protocol' "
1815                         "SUP monitoredInfo "
1816                         "NO-USER-MODIFICATION "
1817                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1818                         offsetof(monitor_info_t, mi_ad_monitorConnectionProtocol) },
1819                 { "( 1.3.6.1.4.1.4203.666.1.55.15 "
1820                         "NAME 'monitorConnectionOpsReceived' "
1821                         "DESC 'monitor number of operations received by the connection' "
1822                         "SUP monitorCounter "
1823                         "NO-USER-MODIFICATION "
1824                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1825                         offsetof(monitor_info_t, mi_ad_monitorConnectionOpsReceived) },
1826                 { "( 1.3.6.1.4.1.4203.666.1.55.16 "
1827                         "NAME 'monitorConnectionOpsExecuting' "
1828                         "DESC 'monitor number of operations in execution within the connection' "
1829                         "SUP monitorCounter "
1830                         "NO-USER-MODIFICATION "
1831                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1832                         offsetof(monitor_info_t, mi_ad_monitorConnectionOpsExecuting) },
1833                 { "( 1.3.6.1.4.1.4203.666.1.55.17 "
1834                         "NAME 'monitorConnectionOpsPending' "
1835                         "DESC 'monitor number of pending operations within the connection' "
1836                         "SUP monitorCounter "
1837                         "NO-USER-MODIFICATION "
1838                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1839                         offsetof(monitor_info_t, mi_ad_monitorConnectionOpsPending) },
1840                 { "( 1.3.6.1.4.1.4203.666.1.55.18 "
1841                         "NAME 'monitorConnectionOpsCompleted' "
1842                         "DESC 'monitor number of operations completed within the connection' "
1843                         "SUP monitorCounter "
1844                         "NO-USER-MODIFICATION "
1845                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1846                         offsetof(monitor_info_t, mi_ad_monitorConnectionOpsCompleted) },
1847                 { "( 1.3.6.1.4.1.4203.666.1.55.19 "
1848                         "NAME 'monitorConnectionGet' "
1849                         "DESC 'number of times connection_get() was called so far' "
1850                         "SUP monitorCounter "
1851                         "NO-USER-MODIFICATION "
1852                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1853                         offsetof(monitor_info_t, mi_ad_monitorConnectionGet) },
1854                 { "( 1.3.6.1.4.1.4203.666.1.55.20 "
1855                         "NAME 'monitorConnectionRead' "
1856                         "DESC 'number of times connection_read() was called so far' "
1857                         "SUP monitorCounter "
1858                         "NO-USER-MODIFICATION "
1859                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1860                         offsetof(monitor_info_t, mi_ad_monitorConnectionRead) },
1861                 { "( 1.3.6.1.4.1.4203.666.1.55.21 "
1862                         "NAME 'monitorConnectionWrite' "
1863                         "DESC 'number of times connection_write() was called so far' "
1864                         "SUP monitorCounter "
1865                         "NO-USER-MODIFICATION "
1866                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1867                         offsetof(monitor_info_t, mi_ad_monitorConnectionWrite) },
1868                 { "( 1.3.6.1.4.1.4203.666.1.55.22 "
1869                         "NAME 'monitorConnectionMask' "
1870                         "DESC 'monitor connection mask' "
1871                         "SUP monitoredInfo "
1872                         "NO-USER-MODIFICATION "
1873                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1874                         offsetof(monitor_info_t, mi_ad_monitorConnectionMask) },
1875                 { "( 1.3.6.1.4.1.4203.666.1.55.23 "
1876                         "NAME 'monitorConnectionListener' "
1877                         "DESC 'monitor connection listener' "
1878                         "SUP monitoredInfo "
1879                         "NO-USER-MODIFICATION "
1880                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1881                         offsetof(monitor_info_t, mi_ad_monitorConnectionListener) },
1882                 { "( 1.3.6.1.4.1.4203.666.1.55.24 "
1883                         "NAME 'monitorConnectionPeerDomain' "
1884                         "DESC 'monitor connection peer domain' "
1885                         "SUP monitoredInfo "
1886                         "NO-USER-MODIFICATION "
1887                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1888                         offsetof(monitor_info_t, mi_ad_monitorConnectionPeerDomain) },
1889                 { "( 1.3.6.1.4.1.4203.666.1.55.25 "
1890                         "NAME 'monitorConnectionStartTime' "
1891                         "DESC 'monitor connection start time' "
1892                         "SUP monitorTimestamp "
1893                         "SINGLE-VALUE "
1894                         "NO-USER-MODIFICATION "
1895                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1896                         offsetof(monitor_info_t, mi_ad_monitorConnectionStartTime) },
1897                 { "( 1.3.6.1.4.1.4203.666.1.55.26 "
1898                         "NAME 'monitorConnectionActivityTime' "
1899                         "DESC 'monitor connection activity time' "
1900                         "SUP monitorTimestamp "
1901                         "SINGLE-VALUE "
1902                         "NO-USER-MODIFICATION "
1903                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1904                         offsetof(monitor_info_t, mi_ad_monitorConnectionActivityTime) },
1905                 { "( 1.3.6.1.4.1.4203.666.1.55.27 "
1906                         "NAME 'monitorIsShadow' "
1907                         "DESC 'TRUE if the database is shadow' "
1908                         "EQUALITY booleanMatch "
1909                         "SYNTAX 1.3.6.1.4.1.1466.115.121.1.7 "
1910                         "SINGLE-VALUE "
1911                         "USAGE dSAOperation )", SLAP_AT_HIDE,
1912                         offsetof(monitor_info_t, mi_ad_monitorIsShadow) },
1913                 { "( 1.3.6.1.4.1.4203.666.1.55.28 "
1914                         "NAME 'monitorUpdateRef' "
1915                         "DESC 'update referral for shadow databases' "
1916                         "SUP monitoredInfo "
1917                         "SINGLE-VALUE "
1918                         "USAGE dSAOperation )", SLAP_AT_HIDE,
1919                         offsetof(monitor_info_t, mi_ad_monitorUpdateRef) },
1920                 { "( 1.3.6.1.4.1.4203.666.1.55.29 "
1921                         "NAME 'monitorRuntimeConfig' "
1922                         "DESC 'TRUE if component allows runtime configuration' "
1923                         "EQUALITY booleanMatch "
1924                         "SYNTAX 1.3.6.1.4.1.1466.115.121.1.7 "
1925                         "SINGLE-VALUE "
1926                         "USAGE dSAOperation )", SLAP_AT_HIDE,
1927                         offsetof(monitor_info_t, mi_ad_monitorRuntimeConfig) },
1928                 { "( 1.3.6.1.4.1.4203.666.1.55.30 "
1929                         "NAME 'monitorSuperiorDN' "
1930                         "DESC 'monitor superior DN' "
1931                         /* "SUP distinguishedName " */
1932                         "EQUALITY distinguishedNameMatch "
1933                         "SYNTAX 1.3.6.1.4.1.1466.115.121.1.12 "
1934                         "NO-USER-MODIFICATION "
1935                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1936                         offsetof(monitor_info_t, mi_ad_monitorSuperiorDN) },
1937                 { NULL, 0, -1 }
1938         };
1939
1940         static struct {
1941                 char                    *name;
1942                 char                    *oid;
1943         }               s_oid[] = {
1944                 { "olmAttributes",                      "1.3.6.1.4.1.4203.666.1.55" },
1945                 { "olmSubSystemAttributes",             "olmAttributes:0" },
1946                 { "olmGenericAttributes",               "olmSubSystemAttributes:0" },
1947                 { "olmDatabaseAttributes",              "olmSubSystemAttributes:1" },
1948
1949                 /* for example, back-bdb specific attrs
1950                  * are in "olmDatabaseAttributes:1"
1951                  *
1952                  * NOTE: developers, please record here OID assignments
1953                  * for other modules */
1954
1955                 { "olmObjectClasses",                   "1.3.6.1.4.1.4203.666.3.16" },
1956                 { "olmSubSystemObjectClasses",          "olmObjectClasses:0" },
1957                 { "olmGenericObjectClasses",            "olmSubSystemObjectClasses:0" },
1958                 { "olmDatabaseObjectClasses",           "olmSubSystemObjectClasses:1" },
1959
1960                 /* for example, back-bdb specific objectClasses
1961                  * are in "olmDatabaseObjectClasses:1"
1962                  *
1963                  * NOTE: developers, please record here OID assignments
1964                  * for other modules */
1965
1966                 { NULL }
1967         };
1968
1969         int                     i, rc;
1970         monitor_info_t          *mi = &monitor_info;
1971         ConfigArgs c;
1972         char    *argv[ 3 ];
1973
1974         argv[ 0 ] = "monitor";
1975         c.argv = argv;
1976         c.argc = 3;
1977         c.fname = argv[0];
1978
1979         for ( i = 0; s_oid[ i ].name; i++ ) {
1980                 argv[ 1 ] = s_oid[ i ].name;
1981                 argv[ 2 ] = s_oid[ i ].oid;
1982
1983                 if ( parse_oidm( &c, 0, NULL ) != 0 ) {
1984                         Debug( LDAP_DEBUG_ANY,
1985                                 "monitor_back_initialize: unable to add "
1986                                 "objectIdentifier \"%s=%s\"\n",
1987                                 s_oid[ i ].name, s_oid[ i ].oid, 0 );
1988                         return 1;
1989                 }
1990         }
1991
1992         /* schema integration */
1993         for ( i = 0; mat[ i ].schema; i++ ) {
1994                 int                     code;
1995                 AttributeDescription **ad =
1996                         ((AttributeDescription **)&(((char *)mi)[ mat[ i ].offset ]));
1997
1998                 *ad = NULL;
1999                 code = register_at( mat[ i ].schema, ad, 0 );
2000
2001                 if ( code ) {
2002                         Debug( LDAP_DEBUG_ANY,
2003                                 "monitor_back_db_init: register_at failed\n", 0, 0, 0 );
2004                         return -1;
2005                 }
2006                 (*ad)->ad_type->sat_flags |= mat[ i ].flags;
2007         }
2008
2009         for ( i = 0; moc[ i ].schema; i++ ) {
2010                 int                     code;
2011                 ObjectClass             **Oc =
2012                         ((ObjectClass **)&(((char *)mi)[ moc[ i ].offset ]));
2013
2014                 code = register_oc( moc[ i ].schema, Oc, 0 );
2015                 if ( code ) {
2016                         Debug( LDAP_DEBUG_ANY,
2017                                 "monitor_back_db_init: register_oc failed\n", 0, 0, 0 );
2018                         return -1;
2019                 }
2020                 (*Oc)->soc_flags |= moc[ i ].flags;
2021         }
2022
2023         bi->bi_controls = controls;
2024
2025         bi->bi_init = 0;
2026         bi->bi_open = 0;
2027         bi->bi_config = monitor_back_config;
2028         bi->bi_close = 0;
2029         bi->bi_destroy = 0;
2030
2031         bi->bi_db_init = monitor_back_db_init;
2032 #if 0
2033         bi->bi_db_config = monitor_back_db_config;
2034 #endif
2035         bi->bi_db_open = monitor_back_db_open;
2036         bi->bi_db_close = 0;
2037         bi->bi_db_destroy = monitor_back_db_destroy;
2038
2039         bi->bi_op_bind = monitor_back_bind;
2040         bi->bi_op_unbind = 0;
2041         bi->bi_op_search = monitor_back_search;
2042         bi->bi_op_compare = monitor_back_compare;
2043         bi->bi_op_modify = monitor_back_modify;
2044         bi->bi_op_modrdn = 0;
2045         bi->bi_op_add = 0;
2046         bi->bi_op_delete = 0;
2047         bi->bi_op_abandon = 0;
2048
2049         bi->bi_extended = 0;
2050
2051         bi->bi_entry_release_rw = monitor_back_release;
2052         bi->bi_chk_referrals = 0;
2053         bi->bi_operational = monitor_back_operational;
2054
2055         /*
2056          * hooks for slap tools
2057          */
2058         bi->bi_tool_entry_open = 0;
2059         bi->bi_tool_entry_close = 0;
2060         bi->bi_tool_entry_first = 0;
2061         bi->bi_tool_entry_first_x = 0;
2062         bi->bi_tool_entry_next = 0;
2063         bi->bi_tool_entry_get = 0;
2064         bi->bi_tool_entry_put = 0;
2065         bi->bi_tool_entry_reindex = 0;
2066         bi->bi_tool_sync = 0;
2067         bi->bi_tool_dn2id_get = 0;
2068         bi->bi_tool_entry_modify = 0;
2069
2070         bi->bi_connection_init = 0;
2071         bi->bi_connection_destroy = 0;
2072
2073         bi->bi_extra = (void *)&monitor_extra;
2074
2075         /*
2076          * configuration objectClasses (fake)
2077          */
2078         bi->bi_cf_ocs = monitorocs;
2079
2080         rc = config_register_schema( monitorcfg, monitorocs );
2081         if ( rc ) {
2082                 return rc;
2083         }
2084
2085         return 0;
2086 }
2087
2088 int
2089 monitor_back_db_init(
2090         BackendDB       *be,
2091         ConfigReply     *c)
2092 {
2093         int                     rc;
2094         struct berval           dn = BER_BVC( SLAPD_MONITOR_DN ),
2095                                 pdn,
2096                                 ndn;
2097         BackendDB               *be2;
2098
2099         monitor_subsys_t        *ms;
2100
2101         /*
2102          * database monitor can be defined once only
2103          */
2104         if ( be_monitor != NULL ) {
2105                 if (c) {
2106                         snprintf(c->msg, sizeof(c->msg),"only one monitor database allowed");
2107                 }
2108                 return( -1 );
2109         }
2110         be_monitor = be;
2111
2112         /*
2113          * register subsys
2114          */
2115         for ( ms = known_monitor_subsys; ms->mss_name != NULL; ms++ ) {
2116                 if ( monitor_back_register_subsys( ms ) ) {
2117                         return -1;
2118                 }
2119         }
2120
2121         /* indicate system schema supported */
2122         SLAP_BFLAGS(be) |= SLAP_BFLAG_MONITOR;
2123
2124         rc = dnPrettyNormal( NULL, &dn, &pdn, &ndn, NULL );
2125         if( rc != LDAP_SUCCESS ) {
2126                 Debug( LDAP_DEBUG_ANY,
2127                         "unable to normalize/pretty monitor DN \"%s\" (%d)\n",
2128                         dn.bv_val, rc, 0 );
2129                 return -1;
2130         }
2131
2132         ber_bvarray_add( &be->be_suffix, &pdn );
2133         ber_bvarray_add( &be->be_nsuffix, &ndn );
2134
2135         /* NOTE: only one monitor database is allowed,
2136          * so we use static storage */
2137         ldap_pvt_thread_mutex_init( &monitor_info.mi_cache_mutex );
2138
2139         be->be_private = &monitor_info;
2140
2141         be2 = select_backend( &ndn, 0 );
2142         if ( be2 != be ) {
2143                 char    *type = be2->bd_info->bi_type;
2144
2145                 if ( overlay_is_over( be2 ) ) {
2146                         slap_overinfo   *oi = (slap_overinfo *)be2->bd_info->bi_private;
2147                         type = oi->oi_orig->bi_type;
2148                 }
2149
2150                 if (c) {
2151                         snprintf(c->msg, sizeof(c->msg),
2152                                         "\"monitor\" database serving namingContext \"%s\" "
2153                                         "is hidden by \"%s\" database serving namingContext \"%s\".\n",
2154                                         pdn.bv_val, type, be2->be_nsuffix[ 0 ].bv_val );
2155                 }
2156                 return -1;
2157         }
2158
2159         return 0;
2160 }
2161
2162 static void
2163 monitor_back_destroy_limbo_entry(
2164         entry_limbo_t   *el,
2165         int             dispose )
2166 {
2167         if ( el->el_e ) {
2168                 entry_free( el->el_e );
2169         }
2170         if ( el->el_a ) {
2171                 attrs_free( el->el_a );
2172         }
2173         if ( !BER_BVISNULL( &el->el_nbase ) ) {
2174                 ber_memfree( el->el_nbase.bv_val );
2175         }
2176         if ( !BER_BVISNULL( &el->el_filter ) ) {
2177                 ber_memfree( el->el_filter.bv_val );
2178         }
2179
2180         /* NOTE: callbacks are not copied; so only free them
2181          * if disposing of */
2182         if ( el->el_cb && dispose != 0 ) {
2183                 monitor_callback_t *next;
2184
2185                 for ( ; el->el_cb; el->el_cb = next ) {
2186                         next = el->el_cb->mc_next;
2187                         if ( el->el_cb->mc_dispose ) {
2188                                 el->el_cb->mc_dispose( &el->el_cb->mc_private );
2189                         }
2190                         ch_free( el->el_cb );
2191                 }
2192         }
2193
2194         ch_free( el );
2195 }
2196
2197 int
2198 monitor_back_db_open(
2199         BackendDB       *be,
2200         ConfigReply     *cr)
2201 {
2202         monitor_info_t          *mi = (monitor_info_t *)be->be_private;
2203         struct monitor_subsys_t **ms;
2204         Entry                   *e, **ep, *root;
2205         monitor_entry_t         *mp;
2206         int                     i;
2207         struct berval           bv, rdn = BER_BVC(SLAPD_MONITOR_DN);
2208         struct tm               tms;
2209         static char             tmbuf[ LDAP_LUTIL_GENTIME_BUFSIZE ];
2210         struct berval   desc[] = {
2211                 BER_BVC("This subtree contains monitoring/managing objects."),
2212                 BER_BVC("This object contains information about this server."),
2213                 BER_BVC("Most of the information is held in operational"
2214                 " attributes, which must be explicitly requested."),
2215                 BER_BVNULL };
2216
2217         int                     retcode = 0;
2218
2219         assert( be_monitor != NULL );
2220         if ( be != be_monitor ) {
2221                 be_monitor = be;
2222         }
2223
2224         /*
2225          * Start
2226          */
2227         ldap_pvt_gmtime( &starttime, &tms );
2228         lutil_gentime( tmbuf, sizeof(tmbuf), &tms );
2229
2230         mi->mi_startTime.bv_val = tmbuf;
2231         mi->mi_startTime.bv_len = strlen( tmbuf );
2232
2233         if ( BER_BVISEMPTY( &be->be_rootdn ) ) {
2234                 BER_BVSTR( &mi->mi_creatorsName, SLAPD_ANONYMOUS );
2235                 BER_BVSTR( &mi->mi_ncreatorsName, SLAPD_ANONYMOUS );
2236         } else {
2237                 mi->mi_creatorsName = be->be_rootdn;
2238                 mi->mi_ncreatorsName = be->be_rootndn;
2239         }
2240
2241         /*
2242          * creates the "cn=Monitor" entry
2243          */
2244         e = monitor_entry_stub( NULL, NULL, &rdn, mi->mi_oc_monitorServer, mi,
2245                 NULL, NULL );
2246
2247         if ( e == NULL) {
2248                 Debug( LDAP_DEBUG_ANY,
2249                         "unable to create \"%s\" entry\n",
2250                         SLAPD_MONITOR_DN, 0, 0 );
2251                 return( -1 );
2252         }
2253
2254         attr_merge_normalize( e, slap_schema.si_ad_description, desc, NULL );
2255
2256         bv.bv_val = strchr( (char *) Versionstr, '$' );
2257         if ( bv.bv_val != NULL ) {
2258                 char    *end;
2259
2260                 bv.bv_val++;
2261                 for ( ; bv.bv_val[ 0 ] == ' '; bv.bv_val++ )
2262                         ;
2263
2264                 end = strchr( bv.bv_val, '$' );
2265                 if ( end != NULL ) {
2266                         end--;
2267
2268                         for ( ; end > bv.bv_val && end[ 0 ] == ' '; end-- )
2269                                 ;
2270
2271                         end++;
2272
2273                         bv.bv_len = end - bv.bv_val;
2274
2275                 } else {
2276                         bv.bv_len = strlen( bv.bv_val );
2277                 }
2278
2279                 if ( attr_merge_normalize_one( e, mi->mi_ad_monitoredInfo,
2280                                         &bv, NULL ) ) {
2281                         Debug( LDAP_DEBUG_ANY,
2282                                 "unable to add monitoredInfo to \"%s\" entry\n",
2283                                 SLAPD_MONITOR_DN, 0, 0 );
2284                         return( -1 );
2285                 }
2286         }
2287
2288         mp = monitor_entrypriv_create();
2289         if ( mp == NULL ) {
2290                 return -1;
2291         }
2292         e->e_private = ( void * )mp;
2293         ep = &mp->mp_children;
2294
2295         if ( monitor_cache_add( mi, e ) ) {
2296                 Debug( LDAP_DEBUG_ANY,
2297                         "unable to add entry \"%s\" to cache\n",
2298                         SLAPD_MONITOR_DN, 0, 0 );
2299                 return -1;
2300         }
2301         root = e;
2302
2303         /*
2304          * Create all the subsystem specific entries
2305          */
2306         for ( i = 0; monitor_subsys[ i ] != NULL; i++ ) {
2307                 int             len = strlen( monitor_subsys[ i ]->mss_name );
2308                 struct berval   dn;
2309                 int             rc;
2310
2311                 dn.bv_len = len + sizeof( "cn=" ) - 1;
2312                 dn.bv_val = ch_calloc( sizeof( char ), dn.bv_len + 1 );
2313                 strcpy( dn.bv_val, "cn=" );
2314                 strcat( dn.bv_val, monitor_subsys[ i ]->mss_name );
2315                 rc = dnPretty( NULL, &dn, &monitor_subsys[ i ]->mss_rdn, NULL );
2316                 free( dn.bv_val );
2317                 if ( rc != LDAP_SUCCESS ) {
2318                         Debug( LDAP_DEBUG_ANY,
2319                                 "monitor RDN \"%s\" is invalid\n",
2320                                 dn.bv_val, 0, 0 );
2321                         return( -1 );
2322                 }
2323
2324                 e = monitor_entry_stub( &root->e_name, &root->e_nname,
2325                         &monitor_subsys[ i ]->mss_rdn, mi->mi_oc_monitorContainer, mi,
2326                         NULL, NULL );
2327
2328                 if ( e == NULL) {
2329                         Debug( LDAP_DEBUG_ANY,
2330                                 "unable to create \"%s\" entry\n",
2331                                 monitor_subsys[ i ]->mss_dn.bv_val, 0, 0 );
2332                         return( -1 );
2333                 }
2334                 monitor_subsys[i]->mss_dn = e->e_name;
2335                 monitor_subsys[i]->mss_ndn = e->e_nname;
2336
2337                 if ( !BER_BVISNULL( &monitor_subsys[ i ]->mss_desc[ 0 ] ) ) {
2338                         attr_merge_normalize( e, slap_schema.si_ad_description,
2339                                         monitor_subsys[ i ]->mss_desc, NULL );
2340                 }
2341
2342                 mp = monitor_entrypriv_create();
2343                 if ( mp == NULL ) {
2344                         return -1;
2345                 }
2346                 e->e_private = ( void * )mp;
2347                 mp->mp_info = monitor_subsys[ i ];
2348                 mp->mp_flags = monitor_subsys[ i ]->mss_flags;
2349
2350                 if ( monitor_cache_add( mi, e ) ) {
2351                         Debug( LDAP_DEBUG_ANY,
2352                                 "unable to add entry \"%s\" to cache\n",
2353                                 monitor_subsys[ i ]->mss_dn.bv_val, 0, 0 );
2354                         return -1;
2355                 }
2356
2357                 *ep = e;
2358                 ep = &mp->mp_next;
2359         }
2360
2361         assert( be != NULL );
2362
2363         be->be_private = mi;
2364
2365         /*
2366          * opens the monitor backend subsystems
2367          */
2368         for ( ms = monitor_subsys; ms[ 0 ] != NULL; ms++ ) {
2369                 if ( ms[ 0 ]->mss_open && ms[ 0 ]->mss_open( be, ms[ 0 ] ) ) {
2370                         return( -1 );
2371                 }
2372                 ms[ 0 ]->mss_flags |= MONITOR_F_OPENED;
2373         }
2374
2375         monitor_subsys_opened = 1;
2376
2377         if ( mi->mi_entry_limbo ) {
2378                 entry_limbo_t   *el = mi->mi_entry_limbo;
2379
2380                 for ( ; el; ) {
2381                         entry_limbo_t   *tmp;
2382                         int             rc;
2383
2384                         switch ( el->el_type ) {
2385                         case LIMBO_ENTRY:
2386                                 rc = monitor_back_register_entry(
2387                                                 el->el_e,
2388                                                 el->el_cb,
2389                                                 el->el_mss,
2390                                                 el->el_flags );
2391                                 break;
2392
2393                         case LIMBO_ENTRY_PARENT:
2394                                 rc = monitor_back_register_entry_parent(
2395                                                 el->el_e,
2396                                                 el->el_cb,
2397                                                 el->el_mss,
2398                                                 el->el_flags,
2399                                                 &el->el_nbase,
2400                                                 el->el_scope,
2401                                                 &el->el_filter );
2402                                 break;
2403
2404
2405                         case LIMBO_ATTRS:
2406                                 rc = monitor_back_register_entry_attrs(
2407                                                 el->el_ndn,
2408                                                 el->el_a,
2409                                                 el->el_cb,
2410                                                 &el->el_nbase,
2411                                                 el->el_scope,
2412                                                 &el->el_filter );
2413                                 break;
2414
2415                         case LIMBO_CB:
2416                                 rc = monitor_back_register_entry_callback(
2417                                                 el->el_ndn,
2418                                                 el->el_cb,
2419                                                 &el->el_nbase,
2420                                                 el->el_scope,
2421                                                 &el->el_filter );
2422                                 break;
2423
2424                         case LIMBO_BACKEND:
2425                                 rc = monitor_back_register_backend( el->el_bi );
2426                                 break;
2427
2428                         case LIMBO_DATABASE:
2429                                 rc = monitor_back_register_database( el->el_be, el->el_ndn );
2430                                 break;
2431
2432                         case LIMBO_OVERLAY_INFO:
2433                                 rc = monitor_back_register_overlay_info( el->el_on );
2434                                 break;
2435
2436                         case LIMBO_OVERLAY:
2437                                 rc = monitor_back_register_overlay( el->el_be, el->el_on, el->el_ndn );
2438                                 break;
2439
2440                         default:
2441                                 assert( 0 );
2442                         }
2443
2444                         tmp = el;
2445                         el = el->el_next;
2446                         monitor_back_destroy_limbo_entry( tmp, rc );
2447
2448                         if ( rc != 0 ) {
2449                                 /* try all, but report error at end */
2450                                 retcode = 1;
2451                         }
2452                 }
2453
2454                 mi->mi_entry_limbo = NULL;
2455         }
2456
2457         return retcode;
2458 }
2459
2460 int
2461 monitor_back_config(
2462         BackendInfo     *bi,
2463         const char      *fname,
2464         int             lineno,
2465         int             argc,
2466         char            **argv )
2467 {
2468         /*
2469          * eventually, will hold backend specific configuration parameters
2470          */
2471         return SLAP_CONF_UNKNOWN;
2472 }
2473
2474 #if 0
2475 int
2476 monitor_back_db_config(
2477         Backend     *be,
2478         const char  *fname,
2479         int         lineno,
2480         int         argc,
2481         char        **argv )
2482 {
2483         monitor_info_t  *mi = ( monitor_info_t * )be->be_private;
2484
2485         /*
2486          * eventually, will hold database specific configuration parameters
2487          */
2488         return SLAP_CONF_UNKNOWN;
2489 }
2490 #endif
2491
2492 int
2493 monitor_back_db_destroy(
2494         BackendDB       *be,
2495         ConfigReply     *cr)
2496 {
2497         monitor_info_t  *mi = ( monitor_info_t * )be->be_private;
2498
2499         if ( mi == NULL ) {
2500                 return -1;
2501         }
2502
2503         /*
2504          * FIXME: destroys all the data
2505          */
2506         /* NOTE: mi points to static storage; don't free it */
2507
2508         (void)monitor_cache_destroy( mi );
2509
2510         if ( monitor_subsys ) {
2511                 int     i;
2512
2513                 for ( i = 0; monitor_subsys[ i ] != NULL; i++ ) {
2514                         if ( monitor_subsys[ i ]->mss_destroy ) {
2515                                 monitor_subsys[ i ]->mss_destroy( be, monitor_subsys[ i ] );
2516                         }
2517
2518                         if ( !BER_BVISNULL( &monitor_subsys[ i ]->mss_rdn ) ) {
2519                                 ch_free( monitor_subsys[ i ]->mss_rdn.bv_val );
2520                         }
2521                 }
2522
2523                 ch_free( monitor_subsys );
2524         }
2525
2526         if ( mi->mi_entry_limbo ) {
2527                 entry_limbo_t   *el = mi->mi_entry_limbo;
2528
2529                 for ( ; el; ) {
2530                         entry_limbo_t *tmp = el;
2531                         el = el->el_next;
2532                         monitor_back_destroy_limbo_entry( tmp, 1 );
2533                 }
2534         }
2535
2536         ldap_pvt_thread_mutex_destroy( &monitor_info.mi_cache_mutex );
2537
2538         be->be_private = NULL;
2539
2540         return 0;
2541 }
2542
2543 #if SLAPD_MONITOR == SLAPD_MOD_DYNAMIC
2544
2545 /* conditionally define the init_module() function */
2546 SLAP_BACKEND_INIT_MODULE( monitor )
2547
2548 #endif /* SLAPD_MONITOR == SLAPD_MOD_DYNAMIC */
2549