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 2001-2006 The OpenLDAP Foundation.
   6  * Portions Copyright 2001-2003 Pierangelo Masarati.
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted only as authorized by the OpenLDAP
  11  * Public License.
  12  *
  13  * A copy of this license is available in file LICENSE in the
  14  * top-level directory of the distribution or, alternatively, at
  15  * <http://www.OpenLDAP.org/license.html>.
  16  */
  17 /* ACKNOWLEDGEMENTS:
  18  * This work was initially developed by Pierangelo Masarati for inclusion
  19  * in OpenLDAP Software.
  20  */
  21
  22 #include "portable.h"
  23
  24 #include <stdio.h>
  25 #include <ac/string.h>
  26
  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_entry,
  56         monitor_back_register_entry_parent,
  57         monitor_back_register_entry_attrs,
  58         monitor_back_register_entry_callback,
  59
  60         monitor_back_unregister_entry,
  61         monitor_back_unregister_entry_parent,
  62         monitor_back_unregister_entry_attrs,
  63         monitor_back_unregister_entry_callback
  64 };
  65
  66
  67 /*
  68  * subsystem data
  69  *
  70  * the known subsystems are added to the subsystems
  71  * array at backend initialization; other subsystems
  72  * may be added by calling monitor_back_register_subsys()
  73  * before the database is opened (e.g. by other backends
  74  * or by overlays or modules).
  75  */
  76 static struct monitor_subsys_t known_monitor_subsys[] = {
  77         {
  78                 SLAPD_MONITOR_BACKEND_NAME,
  79                 BER_BVNULL, BER_BVNULL, BER_BVNULL,
  80                 { BER_BVC( "This subsystem contains information about available backends." ),
  81                         BER_BVNULL },
  82                 MONITOR_F_PERSISTENT_CH,
  83                 monitor_subsys_backend_init,
  84                 NULL,   /* destroy */
  85                 NULL,   /* update */
  86                 NULL,   /* create */
  87                 NULL    /* modify */
  88         }, {
  89                 SLAPD_MONITOR_CONN_NAME,
  90                 BER_BVNULL, BER_BVNULL, BER_BVNULL,
  91                 { BER_BVC( "This subsystem contains information about connections." ),
  92                         BER_BVNULL },
  93                 MONITOR_F_VOLATILE_CH,
  94                 monitor_subsys_conn_init,
  95                 NULL,   /* destroy */
  96                 NULL,   /* update */
  97                 NULL,   /* create */
  98                 NULL    /* modify */
  99         }, {
 100                 SLAPD_MONITOR_DATABASE_NAME,
 101                 BER_BVNULL, BER_BVNULL, BER_BVNULL,
 102                 { BER_BVC( "This subsystem contains information about configured databases." ),
 103                         BER_BVNULL },
 104                 MONITOR_F_PERSISTENT_CH,
 105                 monitor_subsys_database_init,
 106                 NULL,   /* destroy */
 107                 NULL,   /* update */
 108                 NULL,   /* create */
 109                 NULL    /* modify */
 110         }, {
 111                 SLAPD_MONITOR_LISTENER_NAME,
 112                 BER_BVNULL, BER_BVNULL, BER_BVNULL,
 113                 { BER_BVC( "This subsystem contains information about active listeners." ),
 114                         BER_BVNULL },
 115                 MONITOR_F_PERSISTENT_CH,
 116                 monitor_subsys_listener_init,
 117                 NULL,   /* destroy */
 118                 NULL,   /* update */
 119                 NULL,   /* create */
 120                 NULL    /* modify */
 121         }, {
 122                 SLAPD_MONITOR_LOG_NAME,
 123                 BER_BVNULL, BER_BVNULL, BER_BVNULL,
 124                 { BER_BVC( "This subsystem contains information about logging." ),
 125                         BER_BVC( "Set the attribute \"managedInfo\" to the desired log levels." ),
 126                         BER_BVNULL },
 127                 MONITOR_F_NONE,
 128                 monitor_subsys_log_init,
 129                 NULL,   /* destroy */
 130                 NULL,   /* update */
 131                 NULL,   /* create */
 132                 NULL,   /* modify */
 133         }, {
 134                 SLAPD_MONITOR_OPS_NAME,
 135                 BER_BVNULL, BER_BVNULL, BER_BVNULL,
 136                 { BER_BVC( "This subsystem contains information about performed operations." ),
 137                         BER_BVNULL },
 138                 MONITOR_F_PERSISTENT_CH,
 139                 monitor_subsys_ops_init,
 140                 NULL,   /* destroy */
 141                 NULL,   /* update */
 142                 NULL,   /* create */
 143                 NULL,   /* modify */
 144         }, {
 145                 SLAPD_MONITOR_OVERLAY_NAME,
 146                 BER_BVNULL, BER_BVNULL, BER_BVNULL,
 147                 { BER_BVC( "This subsystem contains information about available overlays." ),
 148                         BER_BVNULL },
 149                 MONITOR_F_PERSISTENT_CH,
 150                 monitor_subsys_overlay_init,
 151                 NULL,   /* destroy */
 152                 NULL,   /* update */
 153                 NULL,   /* create */
 154                 NULL,   /* modify */
 155         }, {
 156                 SLAPD_MONITOR_SASL_NAME,
 157                 BER_BVNULL, BER_BVNULL, BER_BVNULL,
 158                 { BER_BVC( "This subsystem contains information about SASL." ),
 159                         BER_BVNULL },
 160                 MONITOR_F_NONE,
 161                 NULL,   /* init */
 162                 NULL,   /* destroy */
 163                 NULL,   /* update */
 164                 NULL,   /* create */
 165                 NULL    /* modify */
 166         }, {
 167                 SLAPD_MONITOR_SENT_NAME,
 168                 BER_BVNULL, BER_BVNULL, BER_BVNULL,
 169                 { BER_BVC( "This subsystem contains statistics." ),
 170                         BER_BVNULL },
 171                 MONITOR_F_PERSISTENT_CH,
 172                 monitor_subsys_sent_init,
 173                 NULL,   /* destroy */
 174                 NULL,   /* update */
 175                 NULL,   /* create */
 176                 NULL,   /* modify */
 177         }, {
 178                 SLAPD_MONITOR_THREAD_NAME,
 179                 BER_BVNULL, BER_BVNULL, BER_BVNULL,
 180                 { BER_BVC( "This subsystem contains information about threads." ),
 181                         BER_BVNULL },
 182                 MONITOR_F_PERSISTENT_CH,
 183                 monitor_subsys_thread_init,
 184                 NULL,   /* destroy */
 185                 NULL,   /* update */
 186                 NULL,   /* create */
 187                 NULL    /* modify */
 188         }, {
 189                 SLAPD_MONITOR_TIME_NAME,
 190                 BER_BVNULL, BER_BVNULL, BER_BVNULL,
 191                 { BER_BVC( "This subsystem contains information about time." ),
 192                         BER_BVNULL },
 193                 MONITOR_F_PERSISTENT_CH,
 194                 monitor_subsys_time_init,
 195                 NULL,   /* destroy */
 196                 NULL,   /* update */
 197                 NULL,   /* create */
 198                 NULL,   /* modify */
 199         }, {
 200                 SLAPD_MONITOR_TLS_NAME,
 201                 BER_BVNULL, BER_BVNULL, BER_BVNULL,
 202                 { BER_BVC( "This subsystem contains information about TLS." ),
 203                         BER_BVNULL },
 204                 MONITOR_F_NONE,
 205                 NULL,   /* init */
 206                 NULL,   /* destroy */
 207                 NULL,   /* update */
 208                 NULL,   /* create */
 209                 NULL    /* modify */
 210         }, {
 211                 SLAPD_MONITOR_RWW_NAME,
 212                 BER_BVNULL, BER_BVNULL, BER_BVNULL,
 213                 { BER_BVC( "This subsystem contains information about read/write waiters." ),
 214                         BER_BVNULL },
 215                 MONITOR_F_PERSISTENT_CH,
 216                 monitor_subsys_rww_init,
 217                 NULL,   /* destroy */
 218                 NULL,   /* update */
 219                 NULL,   /* create */
 220                 NULL    /* modify */
 221         }, { NULL }
 222 };
 223
 224 int
 225 monitor_back_register_subsys(
 226         monitor_subsys_t        *ms )
 227 {
 228         int     i = 0;
 229
 230         if ( monitor_subsys ) {
 231                 for ( ; monitor_subsys[ i ] != NULL; i++ )
 232                         /* just count'em */ ;
 233         }
 234
 235         monitor_subsys = ch_realloc( monitor_subsys,
 236                         ( 2 + i ) * sizeof( monitor_subsys_t * ) );
 237
 238         if ( monitor_subsys == NULL ) {
 239                 return -1;
 240         }
 241
 242         monitor_subsys[ i ] = ms;
 243         monitor_subsys[ i + 1 ] = NULL;
 244
 245         /* if a subsystem is registered __AFTER__ subsystem
 246          * initialization (depending on the sequence the databases
 247          * are listed in slapd.conf), init it */
 248         if ( monitor_subsys_opened ) {
 249
 250                 /* FIXME: this should only be possible
 251                  * if be_monitor is already initialized */
 252                 assert( be_monitor != NULL );
 253
 254                 if ( ms->mss_open && ( *ms->mss_open )( be_monitor, ms ) ) {
 255                         return -1;
 256                 }
 257
 258                 ms->mss_flags |= MONITOR_F_OPENED;
 259         }
 260
 261         return 0;
 262 }
 263
 264 enum {
 265         LIMBO_ENTRY,
 266         LIMBO_ENTRY_PARENT,
 267         LIMBO_ATTRS,
 268         LIMBO_CB
 269 };
 270
 271 typedef struct entry_limbo_t {
 272         int                     el_type;
 273         Entry                   *el_e;
 274         Attribute               *el_a;
 275         struct berval           el_ndn;
 276         struct berval           el_nbase;
 277         int                     el_scope;
 278         struct berval           el_filter;
 279         monitor_callback_t      *el_cb;
 280         monitor_subsys_t        *el_mss;
 281         unsigned long           el_flags;
 282         struct entry_limbo_t    *el_next;
 283 } entry_limbo_t;
 284
 285 int
 286 monitor_back_is_configured( void )
 287 {
 288         return be_monitor != NULL;
 289 }
 290
 291 int
 292 monitor_back_register_entry(
 293         Entry                   *e,
 294         monitor_callback_t      *cb,
 295         monitor_subsys_t        *mss,
 296         unsigned long           flags )
 297 {
 298         monitor_info_t  *mi;
 299
 300         if ( be_monitor == NULL ) {
 301                 Debug( LDAP_DEBUG_ANY,
 302                         "monitor_back_register_entry(\"%s\"): "
 303                         "monitor database not configured.\n",
 304                         e->e_name.bv_val, 0, 0 );
 305                 return -1;
 306         }
 307
 308         mi = ( monitor_info_t * )be_monitor->be_private;
 309
 310         assert( mi != NULL );
 311         assert( e != NULL );
 312         assert( e->e_private == NULL );
 313
 314         if ( monitor_subsys_opened ) {
 315                 Entry           *e_parent = NULL,
 316                                 *e_new = NULL,
 317                                 **ep = NULL;
 318                 struct berval   pdn = BER_BVNULL;
 319                 monitor_entry_t *mp = NULL,
 320                                 *mp_parent = NULL;
 321                 int             rc = 0;
 322
 323                 if ( monitor_cache_get( mi, &e->e_nname, &e_parent ) == 0 ) {
 324                         /* entry exists */
 325                         Debug( LDAP_DEBUG_ANY,
 326                                 "monitor_back_register_entry(\"%s\"): "
 327                                 "entry exists\n",
 328                                 e->e_name.bv_val, 0, 0 );
 329                         monitor_cache_release( mi, e_parent );
 330                         return -1;
 331                 }
 332
 333                 dnParent( &e->e_nname, &pdn );
 334                 if ( monitor_cache_get( mi, &pdn, &e_parent ) != 0 ) {
 335                         /* parent does not exist */
 336                         Debug( LDAP_DEBUG_ANY,
 337                                 "monitor_back_register_entry(\"%s\"): "
 338                                 "parent \"%s\" not found\n",
 339                                 e->e_name.bv_val, pdn.bv_val, 0 );
 340                         return -1;
 341                 }
 342
 343                 assert( e_parent->e_private != NULL );
 344                 mp_parent = ( monitor_entry_t * )e_parent->e_private;
 345
 346                 if ( mp_parent->mp_flags & MONITOR_F_VOLATILE ) {
 347                         /* entry is volatile; cannot append children */
 348                         Debug( LDAP_DEBUG_ANY,
 349                                 "monitor_back_register_entry(\"%s\"): "
 350                                 "parent \"%s\" is volatile\n",
 351                                 e->e_name.bv_val, e_parent->e_name.bv_val, 0 );
 352                         rc = -1;
 353                         goto done;
 354                 }
 355
 356                 mp = monitor_entrypriv_create();
 357                 if ( mp == NULL ) {
 358                         Debug( LDAP_DEBUG_ANY,
 359                                 "monitor_back_register_entry(\"%s\"): "
 360                                 "monitor_entrypriv_create() failed\n",
 361                                 e->e_name.bv_val, 0, 0 );
 362                         rc = -1;
 363                         goto done;
 364                 }
 365
 366                 e_new = entry_dup( e );
 367                 if ( e_new == NULL ) {
 368                         Debug( LDAP_DEBUG_ANY,
 369                                 "monitor_back_register_entry(\"%s\"): "
 370                                 "entry_dup() failed\n",
 371                                 e->e_name.bv_val, 0, 0 );
 372                         rc = -1;
 373                         goto done;
 374                 }
 375
 376                 e_new->e_private = ( void * )mp;
 377                 if ( mss != NULL ) {
 378                         mp->mp_info = mss;
 379                         mp->mp_flags = flags;
 380
 381                 } else {
 382                         mp->mp_info = mp_parent->mp_info;
 383                         mp->mp_flags = mp_parent->mp_flags | MONITOR_F_SUB;
 384                 }
 385                 mp->mp_cb = cb;
 386
 387                 ep = &mp_parent->mp_children;
 388                 for ( ; *ep; ) {
 389                         mp_parent = ( monitor_entry_t * )(*ep)->e_private;
 390                         ep = &mp_parent->mp_next;
 391                 }
 392                 *ep = e_new;
 393
 394                 if ( monitor_cache_add( mi, e_new ) ) {
 395                         Debug( LDAP_DEBUG_ANY,
 396                                 "monitor_back_register_entry(\"%s\"): "
 397                                 "unable to add entry\n",
 398                                 e->e_name.bv_val, 0, 0 );
 399                         rc = -1;
 400                         goto done;
 401                 }
 402
 403 done:;
 404                 if ( rc ) {
 405                         if ( mp ) {
 406                                 ch_free( mp );
 407                         }
 408                         if ( e_new ) {
 409                                 e_new->e_private = NULL;
 410                                 entry_free( e_new );
 411                         }
 412                 }
 413
 414                 if ( e_parent ) {
 415                         monitor_cache_release( mi, e_parent );
 416                 }
 417
 418         } else {
 419                 entry_limbo_t   **elpp, el = { 0 };
 420
 421                 el.el_type = LIMBO_ENTRY;
 422
 423                 el.el_e = entry_dup( e );
 424                 if ( el.el_e == NULL ) {
 425                         Debug( LDAP_DEBUG_ANY,
 426                                 "monitor_back_register_entry(\"%s\"): "
 427                                 "entry_dup() failed\n",
 428                                 e->e_name.bv_val, 0, 0 );
 429                         return -1;
 430                 }
 431
 432                 el.el_cb = cb;
 433                 el.el_mss = mss;
 434                 el.el_flags = flags;
 435
 436                 for ( elpp = (entry_limbo_t **)&mi->mi_entry_limbo;
 437                                 *elpp;
 438                                 elpp = &(*elpp)->el_next )
 439                         /* go to last */;
 440
 441                 *elpp = (entry_limbo_t *)ch_malloc( sizeof( entry_limbo_t ) );
 442                 if ( *elpp == NULL ) {
 443                         el.el_e->e_private = NULL;
 444                         entry_free( el.el_e );
 445                         return -1;
 446                 }
 447
 448                 el.el_next = NULL;
 449                 **elpp = el;
 450         }
 451
 452         return 0;
 453 }
 454
 455 int
 456 monitor_back_register_entry_parent(
 457         Entry                   *e,
 458         monitor_callback_t      *cb,
 459         monitor_subsys_t        *mss,
 460         unsigned long           flags,
 461         struct berval           *nbase,
 462         int                     scope,
 463         struct berval           *filter )
 464 {
 465         monitor_info_t  *mi;
 466         struct berval   ndn = BER_BVNULL;
 467
 468         if ( be_monitor == NULL ) {
 469                 Debug( LDAP_DEBUG_ANY,
 470                         "monitor_back_register_entry_parent(base=\"%s\" scope=%s filter=\"%s\"): "
 471                         "monitor database not configured.\n",
 472                         BER_BVISNULL( nbase ) ? "" : nbase->bv_val,
 473                         ldap_pvt_scope2str( scope ),
 474                         BER_BVISNULL( filter ) ? "" : filter->bv_val );
 475                 return -1;
 476         }
 477
 478         mi = ( monitor_info_t * )be_monitor->be_private;
 479
 480         assert( mi != NULL );
 481         assert( e != NULL );
 482         assert( e->e_private == NULL );
 483
 484         if ( BER_BVISNULL( filter ) ) {
 485                 /* need a filter */
 486                 Debug( LDAP_DEBUG_ANY,
 487                         "monitor_back_register_entry_parent(\"\"): "
 488                         "need a valid filter\n",
 489                         0, 0, 0 );
 490                 return -1;
 491         }
 492
 493         if ( monitor_subsys_opened ) {
 494                 Entry           *e_parent = NULL,
 495                                 *e_new = NULL,
 496                                 **ep = NULL;
 497                 struct berval   e_name = BER_BVNULL,
 498                                 e_nname = BER_BVNULL;
 499                 monitor_entry_t *mp = NULL,
 500                                 *mp_parent = NULL;
 501                 int             rc = 0;
 502
 503                 if ( monitor_search2ndn( nbase, scope, filter, &ndn ) ) {
 504                         /* entry does not exist */
 505                         Debug( LDAP_DEBUG_ANY,
 506                                 "monitor_back_register_entry_parent(\"\"): "
 507                                 "base=\"%s\" scope=%s filter=\"%s\": "
 508                                 "unable to find entry\n",
 509                                 nbase->bv_val ? nbase->bv_val : "\"\"",
 510                                 ldap_pvt_scope2str( scope ),
 511                                 filter->bv_val );
 512                         return -1;
 513                 }
 514
 515                 if ( monitor_cache_get( mi, &ndn, &e_parent ) != 0 ) {
 516                         /* entry does not exist */
 517                         Debug( LDAP_DEBUG_ANY,
 518                                 "monitor_back_register_entry_parent(\"%s\"): "
 519                                 "parent entry does not exist\n",
 520                                 ndn.bv_val, 0, 0 );
 521                         rc = -1;
 522                         goto done;
 523                 }
 524
 525                 assert( e_parent->e_private != NULL );
 526                 mp_parent = ( monitor_entry_t * )e_parent->e_private;
 527
 528                 if ( mp_parent->mp_flags & MONITOR_F_VOLATILE ) {
 529                         /* entry is volatile; cannot append callback */
 530                         Debug( LDAP_DEBUG_ANY,
 531                                 "monitor_back_register_entry_parent(\"%s\"): "
 532                                 "entry is volatile\n",
 533                                 e_parent->e_name.bv_val, 0, 0 );
 534                         rc = -1;
 535                         goto done;
 536                 }
 537
 538                 build_new_dn( &e_name, &e_parent->e_name, &e->e_name, NULL );
 539                 build_new_dn( &e_nname, &e_parent->e_nname, &e->e_nname, NULL );
 540
 541                 if ( monitor_cache_get( mi, &e_nname, &e_new ) == 0 ) {
 542                         /* entry already exists */
 543                         Debug( LDAP_DEBUG_ANY,
 544                                 "monitor_back_register_entry_parent(\"%s\"): "
 545                                 "entry already exists\n",
 546                                 e_name.bv_val, 0, 0 );
 547                         monitor_cache_release( mi, e_new );
 548                         e_new = NULL;
 549                         rc = -1;
 550                         goto done;
 551                 }
 552
 553                 mp = monitor_entrypriv_create();
 554                 if ( mp == NULL ) {
 555                         Debug( LDAP_DEBUG_ANY,
 556                                 "monitor_back_register_entry_parent(\"%s\"): "
 557                                 "monitor_entrypriv_create() failed\n",
 558                                 e->e_name.bv_val, 0, 0 );
 559                         rc = -1;
 560                         goto done;
 561                 }
 562
 563                 e_new = entry_dup( e );
 564                 if ( e_new == NULL ) {
 565                         Debug( LDAP_DEBUG_ANY,
 566                                 "monitor_back_register_entry(\"%s\"): "
 567                                 "entry_dup() failed\n",
 568                                 e->e_name.bv_val, 0, 0 );
 569                         rc = -1;
 570                         goto done;
 571                 }
 572                 ch_free( e_new->e_name.bv_val );
 573                 ch_free( e_new->e_nname.bv_val );
 574                 e_new->e_name = e_name;
 575                 e_new->e_nname = e_nname;
 576
 577                 e_new->e_private = ( void * )mp;
 578                 if ( mss != NULL ) {
 579                         mp->mp_info = mss;
 580                         mp->mp_flags = flags;
 581
 582                 } else {
 583                         mp->mp_info = mp_parent->mp_info;
 584                         mp->mp_flags = mp_parent->mp_flags | MONITOR_F_SUB;
 585                 }
 586                 mp->mp_cb = cb;
 587
 588                 ep = &mp_parent->mp_children;
 589                 for ( ; *ep; ) {
 590                         mp_parent = ( monitor_entry_t * )(*ep)->e_private;
 591                         ep = &mp_parent->mp_next;
 592                 }
 593                 *ep = e_new;
 594
 595                 if ( monitor_cache_add( mi, e_new ) ) {
 596                         Debug( LDAP_DEBUG_ANY,
 597                                 "monitor_back_register_entry(\"%s\"): "
 598                                 "unable to add entry\n",
 599                                 e->e_name.bv_val, 0, 0 );
 600                         rc = -1;
 601                         goto done;
 602                 }
 603
 604 done:;
 605                 if ( !BER_BVISNULL( &ndn ) ) {
 606                         ch_free( ndn.bv_val );
 607                 }
 608
 609                 if ( rc ) {
 610                         if ( mp ) {
 611                                 ch_free( mp );
 612                         }
 613                         if ( e_new ) {
 614                                 e_new->e_private = NULL;
 615                                 entry_free( e_new );
 616                         }
 617                 }
 618
 619                 if ( e_parent ) {
 620                         monitor_cache_release( mi, e_parent );
 621                 }
 622
 623         } else {
 624                 entry_limbo_t   **elpp = NULL, el = { 0 };
 625
 626                 el.el_type = LIMBO_ENTRY_PARENT;
 627
 628                 el.el_e = entry_dup( e );
 629                 if ( el.el_e == NULL ) {
 630                         Debug( LDAP_DEBUG_ANY,
 631                                 "monitor_back_register_entry(\"%s\"): "
 632                                 "entry_dup() failed\n",
 633                                 e->e_name.bv_val, 0, 0 );
 634                         goto done_limbo;
 635                 }
 636
 637                 if ( !BER_BVISNULL( nbase ) ) {
 638                         ber_dupbv( &el.el_nbase, nbase );
 639                 }
 640
 641                 el.el_scope = scope;
 642                 if ( !BER_BVISNULL( filter ) ) {
 643                         ber_dupbv( &el.el_filter, filter  );
 644                 }
 645
 646                 el.el_cb = cb;
 647                 el.el_mss = mss;
 648                 el.el_flags = flags;
 649
 650                 for ( elpp = (entry_limbo_t **)&mi->mi_entry_limbo;
 651                                 *elpp;
 652                                 elpp = &(*elpp)->el_next )
 653                         /* go to last */;
 654
 655                 *elpp = (entry_limbo_t *)ch_malloc( sizeof( entry_limbo_t ) );
 656                 if ( *elpp == NULL ) {
 657                         goto done_limbo;
 658                 }
 659
 660 done_limbo:;
 661                 if ( *elpp != NULL ) {
 662                         el.el_next = NULL;
 663                         **elpp = el;
 664
 665                 } else {
 666                         if ( !BER_BVISNULL( &el.el_filter ) ) {
 667                                 ch_free( el.el_filter.bv_val );
 668                         }
 669                         if ( !BER_BVISNULL( &el.el_nbase ) ) {
 670                                 ch_free( el.el_nbase.bv_val );
 671                         }
 672                         entry_free( el.el_e );
 673                         return -1;
 674                 }
 675         }
 676
 677         return 0;
 678 }
 679
 680 static int
 681 monitor_search2ndn_cb( Operation *op, SlapReply *rs )
 682 {
 683         if ( rs->sr_type == REP_SEARCH ) {
 684                 struct berval   *ndn = op->o_callback->sc_private;
 685
 686                 if ( !BER_BVISNULL( ndn ) ) {
 687                         rs->sr_err = LDAP_SIZELIMIT_EXCEEDED;
 688                         ch_free( ndn->bv_val );
 689                         BER_BVZERO( ndn );
 690                         return rs->sr_err;
 691                 }
 692
 693                 ber_dupbv( ndn, &rs->sr_entry->e_nname );
 694         }
 695
 696         return 0;
 697 }
 698
 699 int
 700 monitor_search2ndn(
 701         struct berval   *nbase,
 702         int             scope,
 703         struct berval   *filter,
 704         struct berval   *ndn )
 705 {
 706         Connection      conn = { 0 };
 707         OperationBuffer opbuf;
 708         Operation       *op;
 709         SlapReply       rs = { 0 };
 710         slap_callback   cb = { NULL, monitor_search2ndn_cb, NULL, NULL };
 711         int             rc;
 712
 713         BER_BVZERO( ndn );
 714
 715         if ( be_monitor == NULL ) {
 716                 return -1;
 717         }
 718
 719         op = (Operation *) &opbuf;
 720         connection_fake_init( &conn, op, &conn );
 721
 722         op->o_tag = LDAP_REQ_SEARCH;
 723
 724         /* use global malloc for now */
 725         if ( op->o_tmpmemctx ) {
 726                 /* FIXME: connection_fake_init() calls slap_sl_mem_create, so we destroy it for now */
 727                 slap_sl_mem_destroy( NULL, op->o_tmpmemctx );
 728                 op->o_tmpmemctx = NULL;
 729         }
 730         op->o_tmpmfuncs = &ch_mfuncs;
 731
 732         op->o_bd = be_monitor;
 733         if ( nbase == NULL || BER_BVISNULL( nbase ) ) {
 734                 ber_dupbv_x( &op->o_req_dn, &op->o_bd->be_suffix[ 0 ],
 735                                 op->o_tmpmemctx );
 736                 ber_dupbv_x( &op->o_req_ndn, &op->o_bd->be_nsuffix[ 0 ],
 737                                 op->o_tmpmemctx );
 738
 739         } else {
 740                 if ( dnPrettyNormal( NULL, nbase, &op->o_req_dn, &op->o_req_ndn,
 741                                         op->o_tmpmemctx ) ) {
 742                         return -1;
 743                 }
 744         }
 745
 746         op->o_callback = &cb;
 747         cb.sc_private = (void *)ndn;
 748
 749         op->ors_scope = scope;
 750         op->ors_filter = str2filter_x( op, filter->bv_val );
 751         if ( op->ors_filter == NULL ) {
 752                 rc = LDAP_OTHER;
 753                 goto cleanup;
 754         }
 755         ber_dupbv_x( &op->ors_filterstr, filter, op->o_tmpmemctx );
 756         op->ors_attrs = slap_anlist_no_attrs;
 757         op->ors_attrsonly = 0;
 758         op->ors_tlimit = SLAP_NO_LIMIT;
 759         op->ors_slimit = 1;
 760         op->ors_limit = NULL;
 761         op->ors_deref = LDAP_DEREF_NEVER;
 762
 763         op->o_nocaching = 1;
 764         op->o_managedsait = SLAP_CONTROL_NONCRITICAL;
 765
 766         op->o_dn = be_monitor->be_rootdn;
 767         op->o_ndn = be_monitor->be_rootndn;
 768
 769         rc = op->o_bd->be_search( op, &rs );
 770
 771 cleanup:;
 772         if ( op->ors_filter != NULL ) {
 773                 filter_free_x( op, op->ors_filter );
 774         }
 775         if ( !BER_BVISNULL( &op->ors_filterstr ) ) {
 776                 op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
 777         }
 778         if ( !BER_BVISNULL( &op->o_req_dn ) ) {
 779                 op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx );
 780         }
 781         if ( !BER_BVISNULL( &op->o_req_ndn ) ) {
 782                 op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
 783         }
 784
 785         if ( rc != 0 ) {
 786                 return rc;
 787         }
 788
 789         switch ( rs.sr_err ) {
 790         case LDAP_SUCCESS:
 791                 if ( BER_BVISNULL( ndn ) ) {
 792                         rc = -1;
 793                 }
 794                 break;
 795
 796         case LDAP_SIZELIMIT_EXCEEDED:
 797         default:
 798                 if ( !BER_BVISNULL( ndn ) ) {
 799                         ber_memfree( ndn->bv_val );
 800                         BER_BVZERO( ndn );
 801                 }
 802                 rc = -1;
 803                 break;
 804         }
 805
 806         return rc;
 807 }
 808
 809 int
 810 monitor_back_register_entry_attrs(
 811         struct berval           *ndn_in,
 812         Attribute               *a,
 813         monitor_callback_t      *cb,
 814         struct berval           *nbase,
 815         int                     scope,
 816         struct berval           *filter )
 817 {
 818         monitor_info_t  *mi;
 819         struct berval   ndn = BER_BVNULL;
 820         char            *fname = ( a == NULL ? "callback" : "attrs" );
 821
 822         if ( be_monitor == NULL ) {
 823                 char            buf[ SLAP_TEXT_BUFLEN ];
 824
 825                 snprintf( buf, sizeof( buf ),
 826                         "monitor_back_register_entry_%s(base=\"%s\" scope=%s filter=\"%s\"): "
 827                         "monitor database not configured.\n",
 828                         fname,
 829                         BER_BVISNULL( nbase ) ? "" : nbase->bv_val,
 830                         ldap_pvt_scope2str( scope ),
 831                         BER_BVISNULL( filter ) ? "" : filter->bv_val );
 832                 Debug( LDAP_DEBUG_ANY, "%s\n", buf, 0, 0 );
 833
 834                 return -1;
 835         }
 836
 837         mi = ( monitor_info_t * )be_monitor->be_private;
 838
 839         assert( mi != NULL );
 840
 841         if ( ndn_in != NULL ) {
 842                 ndn = *ndn_in;
 843         }
 844
 845         if ( a == NULL && cb == NULL ) {
 846                 /* nothing to do */
 847                 return -1;
 848         }
 849
 850         if ( ( ndn_in == NULL || BER_BVISNULL( &ndn ) )
 851                         && BER_BVISNULL( filter ) )
 852         {
 853                 /* need a filter */
 854                 Debug( LDAP_DEBUG_ANY,
 855                         "monitor_back_register_entry_%s(\"\"): "
 856                         "need a valid filter\n",
 857                         fname, 0, 0 );
 858                 return -1;
 859         }
 860
 861         if ( monitor_subsys_opened ) {
 862                 Entry                   *e = NULL;
 863                 Attribute               **atp = NULL;
 864                 monitor_entry_t         *mp = NULL;
 865                 monitor_callback_t      **mcp = NULL;
 866                 int                     rc = 0;
 867                 int                     freeit = 0;
 868
 869                 if ( BER_BVISNULL( &ndn ) ) {
 870                         if ( monitor_search2ndn( nbase, scope, filter, &ndn ) ) {
 871                                 char            buf[ SLAP_TEXT_BUFLEN ];
 872
 873                                 snprintf( buf, sizeof( buf ),
 874                                         "monitor_back_register_entry_%s(\"\"): "
 875                                         "base=\"%s\" scope=%s filter=\"%s\": "
 876                                         "unable to find entry\n",
 877                                         fname,
 878                                         nbase->bv_val ? nbase->bv_val : "\"\"",
 879                                         ldap_pvt_scope2str( scope ),
 880                                         filter->bv_val );
 881
 882                                 /* entry does not exist */
 883                                 Debug( LDAP_DEBUG_ANY, "%s\n", buf, 0, 0 );
 884                                 return -1;
 885                         }
 886
 887                         freeit = 1;
 888                 }
 889
 890                 if ( monitor_cache_get( mi, &ndn, &e ) != 0 ) {
 891                         /* entry does not exist */
 892                         Debug( LDAP_DEBUG_ANY,
 893                                 "monitor_back_register_entry_%s(\"%s\"): "
 894                                 "entry does not exist\n",
 895                                 fname, ndn.bv_val, 0 );
 896                         rc = -1;
 897                         goto done;
 898                 }
 899
 900                 assert( e->e_private != NULL );
 901                 mp = ( monitor_entry_t * )e->e_private;
 902
 903                 if ( mp->mp_flags & MONITOR_F_VOLATILE ) {
 904                         /* entry is volatile; cannot append callback */
 905                         Debug( LDAP_DEBUG_ANY,
 906                                 "monitor_back_register_entry_%s(\"%s\"): "
 907                                 "entry is volatile\n",
 908                                 fname, e->e_name.bv_val, 0 );
 909                         rc = -1;
 910                         goto done;
 911                 }
 912
 913                 if ( a ) {
 914                         for ( atp = &e->e_attrs; *atp; atp = &(*atp)->a_next )
 915                                 /* just get to last */ ;
 916
 917                         for ( ; a != NULL; a = a->a_next ) {
 918                                 assert( a->a_desc != NULL );
 919                                 assert( a->a_vals != NULL );
 920
 921                                 if ( attr_find( e->e_attrs, a->a_desc ) ) {
 922                                         attr_merge( e, a->a_desc, a->a_vals,
 923                                                 a->a_nvals == a->a_vals ? NULL : a->a_nvals );
 924
 925                                 } else {
 926                                         *atp = attr_dup( a );
 927                                         if ( *atp == NULL ) {
 928                                                 Debug( LDAP_DEBUG_ANY,
 929                                                         "monitor_back_register_entry_%s(\"%s\"): "
 930                                                         "attr_dup() failed\n",
 931                                                         fname, e->e_name.bv_val, 0 );
 932                                                 rc = -1;
 933                                                 goto done;
 934                                         }
 935                                         atp = &(*atp)->a_next;
 936                                 }
 937                         }
 938                 }
 939
 940                 if ( cb ) {
 941                         for ( mcp = &mp->mp_cb; *mcp; mcp = &(*mcp)->mc_next )
 942                                 /* go to tail */ ;
 943
 944                         /* NOTE: we do not clear cb->mc_next, so this function
 945                          * can be used to append a list of callbacks */
 946                         (*mcp) = cb;
 947                 }
 948
 949 done:;
 950                 if ( rc ) {
 951                         if ( atp && *atp ) {
 952                                 attrs_free( *atp );
 953                                 *atp = NULL;
 954                         }
 955                 }
 956
 957                 if ( freeit ) {
 958                         ber_memfree( ndn.bv_val );
 959                 }
 960
 961                 if ( e ) {
 962                         monitor_cache_release( mi, e );
 963                 }
 964
 965         } else {
 966                 entry_limbo_t   **elpp, el = { 0 };
 967
 968                 el.el_type = LIMBO_ATTRS;
 969                 if ( !BER_BVISNULL( &ndn ) ) {
 970                         ber_dupbv( &el.el_ndn, &ndn );
 971                 }
 972                 if ( !BER_BVISNULL( nbase ) ) {
 973                         ber_dupbv( &el.el_nbase, nbase);
 974                 }
 975                 el.el_scope = scope;
 976                 if ( !BER_BVISNULL( filter ) ) {
 977                         ber_dupbv( &el.el_filter, filter  );
 978                 }
 979
 980                 el.el_a = attrs_dup( a );
 981                 el.el_cb = cb;
 982
 983                 for ( elpp = (entry_limbo_t **)&mi->mi_entry_limbo;
 984                                 *elpp;
 985                                 elpp = &(*elpp)->el_next )
 986                         /* go to last */;
 987
 988                 *elpp = (entry_limbo_t *)ch_malloc( sizeof( entry_limbo_t ) );
 989                 if ( *elpp == NULL ) {
 990                         el.el_e->e_private = NULL;
 991                         entry_free( el.el_e );
 992                         return -1;
 993                 }
 994
 995 done_limbo:;
 996                 if ( *elpp != NULL ) {
 997                         el.el_next = NULL;
 998                         **elpp = el;
 999
1000                 } else {
1001                         if ( !BER_BVISNULL( &el.el_filter ) ) {
1002                                 ch_free( el.el_filter.bv_val );
1003                         }
1004                         if ( el.el_a != NULL ) {
1005                                 attrs_free( el.el_a );
1006                         }
1007                         if ( !BER_BVISNULL( &el.el_nbase ) ) {
1008                                 ch_free( &el.el_nbase.bv_val );
1009                         }
1010                         if ( !BER_BVISNULL( &el.el_ndn ) ) {
1011                                 ch_free( el.el_ndn.bv_val );
1012                         }
1013                         return -1;
1014                 }
1015         }
1016
1017         return 0;
1018 }
1019
1020 int
1021 monitor_back_register_entry_callback(
1022         struct berval           *ndn,
1023         monitor_callback_t      *cb,
1024         struct berval           *nbase,
1025         int                     scope,
1026         struct berval           *filter )
1027 {
1028         return monitor_back_register_entry_attrs( ndn, NULL, cb,
1029                         nbase, scope, filter );
1030 }
1031
1032 /*
1033  * TODO: add corresponding calls to remove installed callbacks, entries
1034  * and so, in case the entity that installed them is removed (e.g. a
1035  * database, via back-config)
1036  */
1037 int
1038 monitor_back_unregister_entry(
1039         struct berval   *ndn )
1040 {
1041         monitor_info_t  *mi;
1042
1043         if ( be_monitor == NULL ) {
1044                 Debug( LDAP_DEBUG_ANY,
1045                         "monitor_back_unregister_entry(\"%s\"): "
1046                         "monitor database not configured.\n",
1047                         ndn->bv_val, 0, 0 );
1048
1049                 return -1;
1050         }
1051
1052         /* entry will be regularly freed, and resources released
1053          * according to callbacks */
1054         if ( slapd_shutdown ) {
1055                 return 0;
1056         }
1057
1058         mi = ( monitor_info_t * )be_monitor->be_private;
1059
1060         assert( mi != NULL );
1061
1062         if ( monitor_subsys_opened ) {
1063                 Entry                   *e = NULL;
1064                 monitor_entry_t         *mp = NULL;
1065                 monitor_callback_t      *cb = NULL;
1066
1067                 if ( monitor_cache_remove( mi, ndn, &e ) != 0 ) {
1068                         /* entry does not exist */
1069                         Debug( LDAP_DEBUG_ANY,
1070                                 "monitor_back_unregister_entry(\"%s\"): "
1071                                 "entry removal failed.\n",
1072                                 ndn->bv_val, 0, 0 );
1073                         return -1;
1074                 }
1075
1076                 mp = (monitor_entry_t *)e->e_private;
1077                 assert( mp != NULL );
1078
1079                 for ( cb = mp->mp_cb; cb != NULL; ) {
1080                         monitor_callback_t      *next = cb->mc_next;
1081
1082                         if ( cb->mc_free ) {
1083                                 (void)cb->mc_free( e, cb->mc_private );
1084                         }
1085                         ch_free( cb );
1086
1087                         cb = next;
1088                 }
1089
1090                 ch_free( mp );
1091                 e->e_private = NULL;
1092                 entry_free( e );
1093
1094         } else {
1095                 entry_limbo_t   **elpp;
1096
1097                 for ( elpp = (entry_limbo_t **)&mi->mi_entry_limbo;
1098                         *elpp;
1099                         elpp = &(*elpp)->el_next )
1100                 {
1101                         entry_limbo_t   *elp = *elpp;
1102
1103                         if ( elp->el_type == LIMBO_ENTRY
1104                                 && dn_match( ndn, &elp->el_e->e_nname ) )
1105                         {
1106                                 monitor_callback_t      *cb, *next;
1107
1108                                 for ( cb = elp->el_cb; cb; cb = next ) {
1109                                         /* FIXME: call callbacks? */
1110                                         next = cb->mc_next;
1111                                         ch_free( cb );
1112                                 }
1113                                 assert( elp->el_e != NULL );
1114                                 elp->el_e->e_private = NULL;
1115                                 entry_free( elp->el_e );
1116                                 *elpp = elp->el_next;
1117                                 ch_free( elp );
1118                                 elpp = NULL;
1119                                 break;
1120                         }
1121                 }
1122
1123                 if ( elpp != NULL ) {
1124                         /* not found!  where did it go? */
1125                         return 1;
1126                 }
1127         }
1128
1129         return 0;
1130 }
1131
1132 int
1133 monitor_back_unregister_entry_parent(
1134         struct berval           *nrdn,
1135         monitor_callback_t      *target_cb,
1136         struct berval           *nbase,
1137         int                     scope,
1138         struct berval           *filter )
1139 {
1140         monitor_info_t  *mi;
1141         struct berval   ndn = BER_BVNULL;
1142
1143         if ( be_monitor == NULL ) {
1144                 Debug( LDAP_DEBUG_ANY,
1145                         "monitor_back_unregister_entry_parent(base=\"%s\" scope=%s filter=\"%s\"): "
1146                         "monitor database not configured.\n",
1147                         BER_BVISNULL( nbase ) ? "" : nbase->bv_val,
1148                         ldap_pvt_scope2str( scope ),
1149                         BER_BVISNULL( filter ) ? "" : filter->bv_val );
1150
1151                 return -1;
1152         }
1153
1154         /* entry will be regularly freed, and resources released
1155          * according to callbacks */
1156         if ( slapd_shutdown ) {
1157                 return 0;
1158         }
1159
1160         mi = ( monitor_info_t * )be_monitor->be_private;
1161
1162         assert( mi != NULL );
1163
1164         if ( ( nrdn == NULL || BER_BVISNULL( nrdn ) )
1165                         && BER_BVISNULL( filter ) )
1166         {
1167                 /* need a filter */
1168                 Debug( LDAP_DEBUG_ANY,
1169                         "monitor_back_unregister_entry_parent(\"\"): "
1170                         "need a valid filter\n",
1171                         0, 0, 0 );
1172                 return -1;
1173         }
1174
1175         if ( monitor_subsys_opened ) {
1176                 Entry                   *e = NULL;
1177                 monitor_entry_t         *mp = NULL;
1178
1179                 if ( monitor_search2ndn( nbase, scope, filter, &ndn ) ) {
1180                         /* entry does not exist */
1181                         Debug( LDAP_DEBUG_ANY,
1182                                 "monitor_back_unregister_entry_parent(\"\"): "
1183                                 "base=\"%s\" scope=%s filter=\"%s\": "
1184                                 "unable to find entry\n",
1185                                 nbase->bv_val ? nbase->bv_val : "\"\"",
1186                                 ldap_pvt_scope2str( scope ),
1187                                 filter->bv_val );
1188                         return -1;
1189                 }
1190
1191                 if ( monitor_cache_remove( mi, &ndn, &e ) != 0 ) {
1192                         /* entry does not exist */
1193                         Debug( LDAP_DEBUG_ANY,
1194                                 "monitor_back_unregister_entry(\"%s\"): "
1195                                 "entry removal failed.\n",
1196                                 ndn.bv_val, 0, 0 );
1197                         ber_memfree( ndn.bv_val );
1198                         return -1;
1199                 }
1200                 ber_memfree( ndn.bv_val );
1201
1202                 mp = (monitor_entry_t *)e->e_private;
1203                 assert( mp != NULL );
1204
1205                 if ( target_cb != NULL ) {
1206                         monitor_callback_t      **cbp;
1207
1208                         for ( cbp = &mp->mp_cb; *cbp != NULL; cbp = &(*cbp)->mc_next ) {
1209                                 if ( *cbp == target_cb ) {
1210                                         if ( (*cbp)->mc_free ) {
1211                                                 (void)(*cbp)->mc_free( e, (*cbp)->mc_private );
1212                                         }
1213                                         *cbp = (*cbp)->mc_next;
1214                                         ch_free( target_cb );
1215                                         break;
1216                                 }
1217                         }
1218                 }
1219
1220
1221                 ch_free( mp );
1222                 e->e_private = NULL;
1223                 entry_free( e );
1224
1225         } else {
1226                 entry_limbo_t   **elpp;
1227
1228                 for ( elpp = (entry_limbo_t **)&mi->mi_entry_limbo;
1229                         *elpp;
1230                         elpp = &(*elpp)->el_next )
1231                 {
1232                         entry_limbo_t   *elp = *elpp;
1233
1234                         if ( elp->el_type == LIMBO_ENTRY_PARENT
1235                                 && dn_match( nrdn, &elp->el_e->e_nname )
1236                                 && dn_match( nbase, &elp->el_nbase )
1237                                 && scope == elp->el_scope
1238                                 && bvmatch( filter, &elp->el_filter ) )
1239                         {
1240                                 monitor_callback_t      *cb, *next;
1241
1242                                 for ( cb = elp->el_cb; cb; cb = next ) {
1243                                         /* FIXME: call callbacks? */
1244                                         next = cb->mc_next;
1245                                         ch_free( cb );
1246                                 }
1247                                 assert( elp->el_e != NULL );
1248                                 elp->el_e->e_private = NULL;
1249                                 entry_free( elp->el_e );
1250                                 if ( !BER_BVISNULL( &elp->el_nbase ) ) {
1251                                         ch_free( elp->el_nbase.bv_val );
1252                                 }
1253                                 if ( !BER_BVISNULL( &elp->el_filter ) ) {
1254                                         ch_free( elp->el_filter.bv_val );
1255                                 }
1256                                 *elpp = elp->el_next;
1257                                 ch_free( elp );
1258                                 elpp = NULL;
1259                                 break;
1260                         }
1261                 }
1262
1263                 if ( elpp != NULL ) {
1264                         /* not found!  where did it go? */
1265                         return 1;
1266                 }
1267         }
1268
1269         return 0;
1270 }
1271
1272 int
1273 monitor_back_unregister_entry_attrs(
1274         struct berval           *ndn_in,
1275         Attribute               *target_a,
1276         monitor_callback_t      *target_cb,
1277         struct berval           *nbase,
1278         int                     scope,
1279         struct berval           *filter )
1280 {
1281         monitor_info_t  *mi;
1282         struct berval   ndn = BER_BVNULL;
1283         char            *fname = ( target_a == NULL ? "callback" : "attrs" );
1284
1285         if ( be_monitor == NULL ) {
1286                 char            buf[ SLAP_TEXT_BUFLEN ];
1287
1288                 snprintf( buf, sizeof( buf ),
1289                         "monitor_back_unregister_entry_%s(base=\"%s\" scope=%s filter=\"%s\"): "
1290                         "monitor database not configured.\n",
1291                         fname,
1292                         BER_BVISNULL( nbase ) ? "" : nbase->bv_val,
1293                         ldap_pvt_scope2str( scope ),
1294                         BER_BVISNULL( filter ) ? "" : filter->bv_val );
1295                 Debug( LDAP_DEBUG_ANY, "%s\n", buf, 0, 0 );
1296
1297                 return -1;
1298         }
1299
1300         /* entry will be regularly freed, and resources released
1301          * according to callbacks */
1302         if ( slapd_shutdown ) {
1303                 return 0;
1304         }
1305
1306         mi = ( monitor_info_t * )be_monitor->be_private;
1307
1308         assert( mi != NULL );
1309
1310         if ( ndn_in != NULL ) {
1311                 ndn = *ndn_in;
1312         }
1313
1314         if ( target_a == NULL && target_cb == NULL ) {
1315                 /* nothing to do */
1316                 return -1;
1317         }
1318
1319         if ( ( ndn_in == NULL || BER_BVISNULL( &ndn ) )
1320                         && BER_BVISNULL( filter ) )
1321         {
1322                 /* need a filter */
1323                 Debug( LDAP_DEBUG_ANY,
1324                         "monitor_back_unregister_entry_%s(\"\"): "
1325                         "need a valid filter\n",
1326                         fname, 0, 0 );
1327                 return -1;
1328         }
1329
1330         if ( monitor_subsys_opened ) {
1331                 Entry                   *e = NULL;
1332                 monitor_entry_t         *mp = NULL;
1333                 int                     freeit = 0;
1334
1335                 if ( BER_BVISNULL( &ndn ) ) {
1336                         if ( monitor_search2ndn( nbase, scope, filter, &ndn ) ) {
1337                                 char            buf[ SLAP_TEXT_BUFLEN ];
1338
1339                                 snprintf( buf, sizeof( buf ),
1340                                         "monitor_back_unregister_entry_%s(\"\"): "
1341                                         "base=\"%s\" scope=%d filter=\"%s\": "
1342                                         "unable to find entry\n",
1343                                         fname,
1344                                         nbase->bv_val ? nbase->bv_val : "\"\"",
1345                                         scope, filter->bv_val );
1346
1347                                 /* entry does not exist */
1348                                 Debug( LDAP_DEBUG_ANY, "%s\n", buf, 0, 0 );
1349                                 return -1;
1350                         }
1351
1352                         freeit = 1;
1353                 }
1354
1355                 if ( monitor_cache_get( mi, &ndn, &e ) != 0 ) {
1356                         /* entry does not exist */
1357                         Debug( LDAP_DEBUG_ANY,
1358                                 "monitor_back_unregister_entry(\"%s\"): "
1359                                 "entry removal failed.\n",
1360                                 ndn.bv_val, 0, 0 );
1361                         return -1;
1362                 }
1363
1364                 mp = (monitor_entry_t *)e->e_private;
1365                 assert( mp != NULL );
1366
1367                 if ( target_cb != NULL ) {
1368                         monitor_callback_t      **cbp;
1369
1370                         for ( cbp = &mp->mp_cb; *cbp != NULL; cbp = &(*cbp)->mc_next ) {
1371                                 if ( *cbp == target_cb ) {
1372                                         if ( (*cbp)->mc_free ) {
1373                                                 (void)(*cbp)->mc_free( e, (*cbp)->mc_private );
1374                                         }
1375                                         *cbp = (*cbp)->mc_next;
1376                                         ch_free( target_cb );
1377                                         break;
1378                                 }
1379                         }
1380                 }
1381
1382                 if ( target_a != NULL ) {
1383                         Attribute       *a;
1384
1385                         for ( a = target_a; a != NULL; a = a->a_next ) {
1386                                 Modification    mod = { 0 };
1387                                 const char      *text;
1388                                 char            textbuf[ SLAP_TEXT_BUFLEN ];
1389
1390                                 mod.sm_op = LDAP_MOD_DELETE;
1391                                 mod.sm_desc = a->a_desc;
1392                                 mod.sm_values = a->a_vals;
1393                                 mod.sm_nvalues = a->a_nvals;
1394
1395                                 (void)modify_delete_values( e, &mod, 1,
1396                                         &text, textbuf, sizeof( textbuf ) );
1397                         }
1398                 }
1399
1400                 if ( freeit ) {
1401                         ber_memfree( ndn.bv_val );
1402                 }
1403
1404                 if ( e ) {
1405                         monitor_cache_release( mi, e );
1406                 }
1407
1408         } else {
1409                 entry_limbo_t   **elpp;
1410
1411                 for ( elpp = (entry_limbo_t **)&mi->mi_entry_limbo;
1412                         *elpp;
1413                         elpp = &(*elpp)->el_next )
1414                 {
1415                         entry_limbo_t   *elp = *elpp;
1416
1417                         if ( elp->el_type == LIMBO_ATTRS
1418                                 && dn_match( nbase, &elp->el_nbase )
1419                                 && scope == elp->el_scope
1420                                 && bvmatch( filter, &elp->el_filter ) )
1421                         {
1422                                 monitor_callback_t      *cb, *next;
1423
1424                                 for ( cb = elp->el_cb; cb; cb = next ) {
1425                                         /* FIXME: call callbacks? */
1426                                         next = cb->mc_next;
1427                                         ch_free( cb );
1428                                 }
1429                                 assert( elp->el_e == NULL );
1430                                 if ( elp->el_a != NULL ) {
1431                                         attrs_free( elp->el_a );
1432                                 }
1433                                 if ( !BER_BVISNULL( &elp->el_nbase ) ) {
1434                                         ch_free( elp->el_nbase.bv_val );
1435                                 }
1436                                 if ( !BER_BVISNULL( &elp->el_filter ) ) {
1437                                         ch_free( elp->el_filter.bv_val );
1438                                 }
1439                                 *elpp = elp->el_next;
1440                                 ch_free( elp );
1441                                 elpp = NULL;
1442                                 break;
1443                         }
1444                 }
1445
1446                 if ( elpp != NULL ) {
1447                         /* not found!  where did it go? */
1448                         return 1;
1449                 }
1450         }
1451
1452         return 0;
1453 }
1454
1455 int
1456 monitor_back_unregister_entry_callback(
1457         struct berval           *ndn,
1458         monitor_callback_t      *cb,
1459         struct berval           *nbase,
1460         int                     scope,
1461         struct berval           *filter )
1462 {
1463         /* TODO: lookup entry (by ndn, if not NULL, and/or by callback);
1464          * unregister the callback; if a is not null, unregister the
1465          * given attrs.  In any case, call cb->cb_free */
1466         return monitor_back_unregister_entry_attrs( ndn,
1467                 NULL, cb, nbase, scope, filter );
1468 }
1469
1470 monitor_subsys_t *
1471 monitor_back_get_subsys( const char *name )
1472 {
1473         if ( monitor_subsys != NULL ) {
1474                 int     i;
1475
1476                 for ( i = 0; monitor_subsys[ i ] != NULL; i++ ) {
1477                         if ( strcasecmp( monitor_subsys[ i ]->mss_name, name ) == 0 ) {
1478                                 return monitor_subsys[ i ];
1479                         }
1480                 }
1481         }
1482
1483         return NULL;
1484 }
1485
1486 monitor_subsys_t *
1487 monitor_back_get_subsys_by_dn(
1488         struct berval   *ndn,
1489         int             sub )
1490 {
1491         if ( monitor_subsys != NULL ) {
1492                 int     i;
1493
1494                 if ( sub ) {
1495                         for ( i = 0; monitor_subsys[ i ] != NULL; i++ ) {
1496                                 if ( dnIsSuffix( ndn, &monitor_subsys[ i ]->mss_ndn ) ) {
1497                                         return monitor_subsys[ i ];
1498                                 }
1499                         }
1500
1501                 } else {
1502                         for ( i = 0; monitor_subsys[ i ] != NULL; i++ ) {
1503                                 if ( dn_match( ndn, &monitor_subsys[ i ]->mss_ndn ) ) {
1504                                         return monitor_subsys[ i ];
1505                                 }
1506                         }
1507                 }
1508         }
1509
1510         return NULL;
1511 }
1512
1513 int
1514 monitor_back_initialize(
1515         BackendInfo     *bi )
1516 {
1517         static char             *controls[] = {
1518                 LDAP_CONTROL_MANAGEDSAIT,
1519                 NULL
1520         };
1521
1522         static ConfigTable monitorcfg[] = {
1523                 { NULL, NULL, 0, 0, 0, ARG_IGNORED,
1524                         NULL, NULL, NULL, NULL }
1525         };
1526
1527         static ConfigOCs monitorocs[] = {
1528                 { "( OLcfgDbOc:4.1 "
1529                         "NAME 'olcMonitorConfig' "
1530                         "DESC 'Monitor backend configuration' "
1531                         "SUP olcDatabaseConfig "
1532                         ")",
1533                                 Cft_Database, monitorcfg },
1534                 { NULL, 0, NULL }
1535         };
1536
1537         struct m_s {
1538                 char    *schema;
1539                 slap_mask_t flags;
1540                 int     offset;
1541         } moc[] = {
1542                 { "( 1.3.6.1.4.1.4203.666.3.16.1 "
1543                         "NAME 'monitor' "
1544                         "DESC 'OpenLDAP system monitoring' "
1545                         "SUP top STRUCTURAL "
1546                         "MUST cn "
1547                         "MAY ( "
1548                                 "description "
1549                                 "$ seeAlso "
1550                                 "$ labeledURI "
1551                                 "$ monitoredInfo "
1552                                 "$ managedInfo "
1553                                 "$ monitorOverlay "
1554                         ") )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
1555                         offsetof(monitor_info_t, mi_oc_monitor) },
1556                 { "( 1.3.6.1.4.1.4203.666.3.16.2 "
1557                         "NAME 'monitorServer' "
1558                         "DESC 'Server monitoring root entry' "
1559                         "SUP monitor STRUCTURAL )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
1560                         offsetof(monitor_info_t, mi_oc_monitorServer) },
1561                 { "( 1.3.6.1.4.1.4203.666.3.16.3 "
1562                         "NAME 'monitorContainer' "
1563                         "DESC 'monitor container class' "
1564                         "SUP monitor STRUCTURAL )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
1565                         offsetof(monitor_info_t, mi_oc_monitorContainer) },
1566                 { "( 1.3.6.1.4.1.4203.666.3.16.4 "
1567                         "NAME 'monitorCounterObject' "
1568                         "DESC 'monitor counter class' "
1569                         "SUP monitor STRUCTURAL )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
1570                         offsetof(monitor_info_t, mi_oc_monitorCounterObject) },
1571                 { "( 1.3.6.1.4.1.4203.666.3.16.5 "
1572                         "NAME 'monitorOperation' "
1573                         "DESC 'monitor operation class' "
1574                         "SUP monitor STRUCTURAL )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
1575                         offsetof(monitor_info_t, mi_oc_monitorOperation) },
1576                 { "( 1.3.6.1.4.1.4203.666.3.16.6 "
1577                         "NAME 'monitorConnection' "
1578                         "DESC 'monitor connection class' "
1579                         "SUP monitor STRUCTURAL )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
1580                         offsetof(monitor_info_t, mi_oc_monitorConnection) },
1581                 { "( 1.3.6.1.4.1.4203.666.3.16.7 "
1582                         "NAME 'managedObject' "
1583                         "DESC 'monitor managed entity class' "
1584                         "SUP monitor STRUCTURAL )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
1585                         offsetof(monitor_info_t, mi_oc_managedObject) },
1586                 { "( 1.3.6.1.4.1.4203.666.3.16.8 "
1587                         "NAME 'monitoredObject' "
1588                         "DESC 'monitor monitored entity class' "
1589                         "SUP monitor STRUCTURAL )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
1590                         offsetof(monitor_info_t, mi_oc_monitoredObject) },
1591                 { NULL, 0, -1 }
1592         }, mat[] = {
1593                 { "( 1.3.6.1.4.1.4203.666.1.55.1 "
1594                         "NAME 'monitoredInfo' "
1595                         "DESC 'monitored info' "
1596                         /* "SUP name " */
1597                         "EQUALITY caseIgnoreMatch "
1598                         "SUBSTR caseIgnoreSubstringsMatch "
1599                         "SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{32768} "
1600                         "NO-USER-MODIFICATION "
1601                         "USAGE dSAOperation )", SLAP_AT_HIDE,
1602                         offsetof(monitor_info_t, mi_ad_monitoredInfo) },
1603                 { "( 1.3.6.1.4.1.4203.666.1.55.2 "
1604                         "NAME 'managedInfo' "
1605                         "DESC 'monitor managed info' "
1606                         "SUP name )", SLAP_AT_HIDE,
1607                         offsetof(monitor_info_t, mi_ad_managedInfo) },
1608                 { "( 1.3.6.1.4.1.4203.666.1.55.3 "
1609                         "NAME 'monitorCounter' "
1610                         "DESC 'monitor counter' "
1611                         "EQUALITY integerMatch "
1612                         "ORDERING integerOrderingMatch "
1613                         "SYNTAX 1.3.6.1.4.1.1466.115.121.1.27 "
1614                         "NO-USER-MODIFICATION "
1615                         "USAGE dSAOperation )", SLAP_AT_HIDE,
1616                         offsetof(monitor_info_t, mi_ad_monitorCounter) },
1617                 { "( 1.3.6.1.4.1.4203.666.1.55.4 "
1618                         "NAME 'monitorOpCompleted' "
1619                         "DESC 'monitor completed operations' "
1620                         "SUP monitorCounter "
1621                         "NO-USER-MODIFICATION "
1622                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1623                         offsetof(monitor_info_t, mi_ad_monitorOpCompleted) },
1624                 { "( 1.3.6.1.4.1.4203.666.1.55.5 "
1625                         "NAME 'monitorOpInitiated' "
1626                         "DESC 'monitor initiated operations' "
1627                         "SUP monitorCounter "
1628                         "NO-USER-MODIFICATION "
1629                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1630                         offsetof(monitor_info_t, mi_ad_monitorOpInitiated) },
1631                 { "( 1.3.6.1.4.1.4203.666.1.55.6 "
1632                         "NAME 'monitorConnectionNumber' "
1633                         "DESC 'monitor connection number' "
1634                         "SUP monitorCounter "
1635                         "NO-USER-MODIFICATION "
1636                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1637                         offsetof(monitor_info_t, mi_ad_monitorConnectionNumber) },
1638                 { "( 1.3.6.1.4.1.4203.666.1.55.7 "
1639                         "NAME 'monitorConnectionAuthzDN' "
1640                         "DESC 'monitor connection authorization DN' "
1641                         /* "SUP distinguishedName " */
1642                         "EQUALITY distinguishedNameMatch "
1643                         "SYNTAX 1.3.6.1.4.1.1466.115.121.1.12 "
1644                         "NO-USER-MODIFICATION "
1645                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1646                         offsetof(monitor_info_t, mi_ad_monitorConnectionAuthzDN) },
1647                 { "( 1.3.6.1.4.1.4203.666.1.55.8 "
1648                         "NAME 'monitorConnectionLocalAddress' "
1649                         "DESC 'monitor connection local address' "
1650                         "SUP monitoredInfo "
1651                         "NO-USER-MODIFICATION "
1652                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1653                         offsetof(monitor_info_t, mi_ad_monitorConnectionLocalAddress) },
1654                 { "( 1.3.6.1.4.1.4203.666.1.55.9 "
1655                         "NAME 'monitorConnectionPeerAddress' "
1656                         "DESC 'monitor connection peer address' "
1657                         "SUP monitoredInfo "
1658                         "NO-USER-MODIFICATION "
1659                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1660                         offsetof(monitor_info_t, mi_ad_monitorConnectionPeerAddress) },
1661                 { "( 1.3.6.1.4.1.4203.666.1.55.10 "
1662                         "NAME 'monitorTimestamp' "
1663                         "DESC 'monitor timestamp' "
1664                         "EQUALITY generalizedTimeMatch "
1665                         "ORDERING generalizedTimeOrderingMatch "
1666                         "SYNTAX 1.3.6.1.4.1.1466.115.121.1.24 "
1667                         "SINGLE-VALUE "
1668                         "NO-USER-MODIFICATION "
1669                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1670                         offsetof(monitor_info_t, mi_ad_monitorTimestamp) },
1671                 { "( 1.3.6.1.4.1.4203.666.1.55.11 "
1672                         "NAME 'monitorOverlay' "
1673                         "DESC 'name of overlays defined for a given database' "
1674                         "SUP monitoredInfo "
1675                         "NO-USER-MODIFICATION "
1676                         "USAGE dSAOperation )", SLAP_AT_HIDE,
1677                         offsetof(monitor_info_t, mi_ad_monitorOverlay) },
1678                 { "( 1.3.6.1.4.1.4203.666.1.55.12 "
1679                         "NAME 'readOnly' "
1680                         "DESC 'read/write status of a given database' "
1681                         "EQUALITY booleanMatch "
1682                         "SYNTAX 1.3.6.1.4.1.1466.115.121.1.7 "
1683                         "SINGLE-VALUE "
1684                         "USAGE dSAOperation )", SLAP_AT_HIDE,
1685                         offsetof(monitor_info_t, mi_ad_readOnly) },
1686                 { "( 1.3.6.1.4.1.4203.666.1.55.13 "
1687                         "NAME 'restrictedOperation' "
1688                         "DESC 'name of restricted operation for a given database' "
1689                         "SUP managedInfo )", SLAP_AT_HIDE,
1690                         offsetof(monitor_info_t, mi_ad_restrictedOperation ) },
1691                 { "( 1.3.6.1.4.1.4203.666.1.55.14 "
1692                         "NAME 'monitorConnectionProtocol' "
1693                         "DESC 'monitor connection protocol' "
1694                         "SUP monitoredInfo "
1695                         "NO-USER-MODIFICATION "
1696                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1697                         offsetof(monitor_info_t, mi_ad_monitorConnectionProtocol) },
1698                 { "( 1.3.6.1.4.1.4203.666.1.55.15 "
1699                         "NAME 'monitorConnectionOpsReceived' "
1700                         "DESC 'monitor number of operations received by the connection' "
1701                         "SUP monitorCounter "
1702                         "NO-USER-MODIFICATION "
1703                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1704                         offsetof(monitor_info_t, mi_ad_monitorConnectionOpsReceived) },
1705                 { "( 1.3.6.1.4.1.4203.666.1.55.16 "
1706                         "NAME 'monitorConnectionOpsExecuting' "
1707                         "DESC 'monitor number of operations in execution within the connection' "
1708                         "SUP monitorCounter "
1709                         "NO-USER-MODIFICATION "
1710                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1711                         offsetof(monitor_info_t, mi_ad_monitorConnectionOpsExecuting) },
1712                 { "( 1.3.6.1.4.1.4203.666.1.55.17 "
1713                         "NAME 'monitorConnectionOpsPending' "
1714                         "DESC 'monitor number of pending operations within the connection' "
1715                         "SUP monitorCounter "
1716                         "NO-USER-MODIFICATION "
1717                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1718                         offsetof(monitor_info_t, mi_ad_monitorConnectionOpsPending) },
1719                 { "( 1.3.6.1.4.1.4203.666.1.55.18 "
1720                         "NAME 'monitorConnectionOpsCompleted' "
1721                         "DESC 'monitor number of operations completed within the connection' "
1722                         "SUP monitorCounter "
1723                         "NO-USER-MODIFICATION "
1724                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1725                         offsetof(monitor_info_t, mi_ad_monitorConnectionOpsCompleted) },
1726                 { "( 1.3.6.1.4.1.4203.666.1.55.19 "
1727                         "NAME 'monitorConnectionGet' "
1728                         "DESC 'number of times connection_get() was called so far' "
1729                         "SUP monitorCounter "
1730                         "NO-USER-MODIFICATION "
1731                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1732                         offsetof(monitor_info_t, mi_ad_monitorConnectionGet) },
1733                 { "( 1.3.6.1.4.1.4203.666.1.55.20 "
1734                         "NAME 'monitorConnectionRead' "
1735                         "DESC 'number of times connection_read() was called so far' "
1736                         "SUP monitorCounter "
1737                         "NO-USER-MODIFICATION "
1738                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1739                         offsetof(monitor_info_t, mi_ad_monitorConnectionRead) },
1740                 { "( 1.3.6.1.4.1.4203.666.1.55.21 "
1741                         "NAME 'monitorConnectionWrite' "
1742                         "DESC 'number of times connection_write() was called so far' "
1743                         "SUP monitorCounter "
1744                         "NO-USER-MODIFICATION "
1745                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1746                         offsetof(monitor_info_t, mi_ad_monitorConnectionWrite) },
1747                 { "( 1.3.6.1.4.1.4203.666.1.55.22 "
1748                         "NAME 'monitorConnectionMask' "
1749                         "DESC 'monitor connection mask' "
1750                         "SUP monitoredInfo "
1751                         "NO-USER-MODIFICATION "
1752                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1753                         offsetof(monitor_info_t, mi_ad_monitorConnectionMask) },
1754                 { "( 1.3.6.1.4.1.4203.666.1.55.23 "
1755                         "NAME 'monitorConnectionListener' "
1756                         "DESC 'monitor connection listener' "
1757                         "SUP monitoredInfo "
1758                         "NO-USER-MODIFICATION "
1759                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1760                         offsetof(monitor_info_t, mi_ad_monitorConnectionListener) },
1761                 { "( 1.3.6.1.4.1.4203.666.1.55.24 "
1762                         "NAME 'monitorConnectionPeerDomain' "
1763                         "DESC 'monitor connection peer domain' "
1764                         "SUP monitoredInfo "
1765                         "NO-USER-MODIFICATION "
1766                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1767                         offsetof(monitor_info_t, mi_ad_monitorConnectionPeerDomain) },
1768                 { "( 1.3.6.1.4.1.4203.666.1.55.25 "
1769                         "NAME 'monitorConnectionStartTime' "
1770                         "DESC 'monitor connection start time' "
1771                         "SUP monitorTimestamp "
1772                         "SINGLE-VALUE "
1773                         "NO-USER-MODIFICATION "
1774                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1775                         offsetof(monitor_info_t, mi_ad_monitorConnectionStartTime) },
1776                 { "( 1.3.6.1.4.1.4203.666.1.55.26 "
1777                         "NAME 'monitorConnectionActivityTime' "
1778                         "DESC 'monitor connection activity time' "
1779                         "SUP monitorTimestamp "
1780                         "SINGLE-VALUE "
1781                         "NO-USER-MODIFICATION "
1782                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1783                         offsetof(monitor_info_t, mi_ad_monitorConnectionActivityTime) },
1784                 { "( 1.3.6.1.4.1.4203.666.1.55.27 "
1785                         "NAME 'monitorIsShadow' "
1786                         "DESC 'TRUE if the database is shadow' "
1787                         "EQUALITY booleanMatch "
1788                         "SYNTAX 1.3.6.1.4.1.1466.115.121.1.7 "
1789                         "SINGLE-VALUE "
1790                         "USAGE dSAOperation )", SLAP_AT_HIDE,
1791                         offsetof(monitor_info_t, mi_ad_monitorIsShadow) },
1792                 { "( 1.3.6.1.4.1.4203.666.1.55.28 "
1793                         "NAME 'monitorUpdateRef' "
1794                         "DESC 'update referral for shadow databases' "
1795                         "SUP monitoredInfo "
1796                         "SINGLE-VALUE "
1797                         "USAGE dSAOperation )", SLAP_AT_HIDE,
1798                         offsetof(monitor_info_t, mi_ad_monitorUpdateRef) },
1799                 { "( 1.3.6.1.4.1.4203.666.1.55.29 "
1800                         "NAME 'monitorRuntimeConfig' "
1801                         "DESC 'TRUE if component allows runtime configuration' "
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_monitorRuntimeConfig) },
1807                 { NULL, 0, -1 }
1808         };
1809
1810         static struct {
1811                 char                    *name;
1812                 char                    *oid;
1813         }               s_oid[] = {
1814                 { "olmAttributes",                      "1.3.6.1.4.1.4203.666.1.55" },
1815                 { "olmSubSystemAttributes",             "olmAttributes:0" },
1816                 { "olmGenericAttributes",               "olmSubSystemAttributes:0" },
1817                 { "olmDatabaseAttributes",              "olmSubSystemAttributes:1" },
1818
1819                 /* for example, back-bdb specific attrs
1820                  * are in "olmDatabaseAttributes:1"
1821                  *
1822                  * NOTE: developers, please record here OID assignments
1823                  * for other modules */
1824
1825                 { "olmObjectClasses",                   "1.3.6.1.4.1.4203.666.3.16" },
1826                 { "olmSubSystemObjectClasses",          "olmObjectClasses:0" },
1827                 { "olmGenericObjectClasses",            "olmSubSystemObjectClasses:0" },
1828                 { "olmDatabaseObjectClasses",           "olmSubSystemObjectClasses:1" },
1829
1830                 /* for example, back-bdb specific objectClasses
1831                  * are in "olmDatabaseObjectClasses:1"
1832                  *
1833                  * NOTE: developers, please record here OID assignments
1834                  * for other modules */
1835
1836                 { NULL }
1837         };
1838
1839         int                     i, rc;
1840         const char              *text;
1841         monitor_info_t          *mi = &monitor_info;
1842         ConfigArgs c;
1843         char    *argv[ 3 ];
1844
1845         argv[ 0 ] = "monitor";
1846         c.argv = argv;
1847         c.argc = 3;
1848         c.fname = argv[0];
1849
1850         for ( i = 0; s_oid[ i ].name; i++ ) {
1851                 argv[ 1 ] = s_oid[ i ].name;
1852                 argv[ 2 ] = s_oid[ i ].oid;
1853
1854                 if ( parse_oidm( &c, 0, NULL ) != 0 ) {
1855                         Debug( LDAP_DEBUG_ANY,
1856                                 "monitor_back_initialize: unable to add "
1857                                 "objectIdentifier \"%s=%s\"\n",
1858                                 s_oid[ i ].name, s_oid[ i ].oid, 0 );
1859                         return 1;
1860                 }
1861         }
1862
1863         /* schema integration */
1864         for ( i = 0; mat[ i ].schema; i++ ) {
1865                 int                     code;
1866                 AttributeDescription **ad =
1867                         ((AttributeDescription **)&(((char *)mi)[ mat[ i ].offset ]));
1868
1869                 *ad = NULL;
1870                 code = register_at( mat[ i ].schema, ad, 0 );
1871
1872                 if ( code ) {
1873                         Debug( LDAP_DEBUG_ANY,
1874                                 "monitor_back_db_init: register_at failed\n", 0, 0, 0 );
1875                         return -1;
1876                 }
1877                 (*ad)->ad_type->sat_flags |= mat[ i ].flags;
1878         }
1879
1880         for ( i = 0; moc[ i ].schema; i++ ) {
1881                 int                     code;
1882                 ObjectClass             **Oc =
1883                         ((ObjectClass **)&(((char *)mi)[ moc[ i ].offset ]));
1884
1885                 code = register_oc( moc[ i ].schema, Oc, 0 );
1886                 if ( code ) {
1887                         Debug( LDAP_DEBUG_ANY,
1888                                 "monitor_back_db_init: register_oc failed\n", 0, 0, 0 );
1889                         return -1;
1890                 }
1891                 (*Oc)->soc_flags |= moc[ i ].flags;
1892         }
1893
1894         bi->bi_controls = controls;
1895
1896         bi->bi_init = 0;
1897         bi->bi_open = 0;
1898         bi->bi_config = monitor_back_config;
1899         bi->bi_close = 0;
1900         bi->bi_destroy = 0;
1901
1902         bi->bi_db_init = monitor_back_db_init;
1903 #if 0
1904         bi->bi_db_config = monitor_back_db_config;
1905 #endif
1906         bi->bi_db_open = monitor_back_db_open;
1907         bi->bi_db_close = 0;
1908         bi->bi_db_destroy = monitor_back_db_destroy;
1909
1910         bi->bi_op_bind = monitor_back_bind;
1911         bi->bi_op_unbind = 0;
1912         bi->bi_op_search = monitor_back_search;
1913         bi->bi_op_compare = monitor_back_compare;
1914         bi->bi_op_modify = monitor_back_modify;
1915         bi->bi_op_modrdn = 0;
1916         bi->bi_op_add = 0;
1917         bi->bi_op_delete = 0;
1918         bi->bi_op_abandon = 0;
1919
1920         bi->bi_extended = 0;
1921
1922         bi->bi_entry_release_rw = 0;
1923         bi->bi_chk_referrals = 0;
1924         bi->bi_operational = monitor_back_operational;
1925
1926         /*
1927          * hooks for slap tools
1928          */
1929         bi->bi_tool_entry_open = 0;
1930         bi->bi_tool_entry_close = 0;
1931         bi->bi_tool_entry_first = 0;
1932         bi->bi_tool_entry_next = 0;
1933         bi->bi_tool_entry_get = 0;
1934         bi->bi_tool_entry_put = 0;
1935         bi->bi_tool_entry_reindex = 0;
1936         bi->bi_tool_sync = 0;
1937         bi->bi_tool_dn2id_get = 0;
1938         bi->bi_tool_id2entry_get = 0;
1939         bi->bi_tool_entry_modify = 0;
1940
1941         bi->bi_connection_init = 0;
1942         bi->bi_connection_destroy = 0;
1943
1944         bi->bi_extra = (void *)&monitor_extra;
1945
1946         /*
1947          * configuration objectClasses (fake)
1948          */
1949         bi->bi_cf_ocs = monitorocs;
1950
1951         rc = config_register_schema( monitorcfg, monitorocs );
1952         if ( rc ) {
1953                 return rc;
1954         }
1955
1956         return 0;
1957 }
1958
1959 int
1960 monitor_back_db_init(
1961         BackendDB       *be )
1962 {
1963         int                     rc;
1964         struct berval           dn = BER_BVC( SLAPD_MONITOR_DN ),
1965                                 pdn,
1966                                 ndn;
1967         BackendDB               *be2;
1968
1969         monitor_subsys_t        *ms;
1970
1971         /*
1972          * register subsys
1973          */
1974         for ( ms = known_monitor_subsys; ms->mss_name != NULL; ms++ ) {
1975                 if ( monitor_back_register_subsys( ms ) ) {
1976                         return -1;
1977                 }
1978         }
1979
1980         /*
1981          * database monitor can be defined once only
1982          */
1983         if ( be_monitor != NULL ) {
1984                 Debug( LDAP_DEBUG_ANY,
1985                         "only one monitor database is allowed\n", 0, 0, 0 );
1986                 return( -1 );
1987         }
1988         be_monitor = be;
1989
1990         /* indicate system schema supported */
1991         SLAP_BFLAGS(be) |= SLAP_BFLAG_MONITOR;
1992
1993         rc = dnPrettyNormal( NULL, &dn, &pdn, &ndn, NULL );
1994         if( rc != LDAP_SUCCESS ) {
1995                 Debug( LDAP_DEBUG_ANY,
1996                         "unable to normalize/pretty monitor DN \"%s\" (%d)\n",
1997                         dn.bv_val, rc, 0 );
1998                 return -1;
1999         }
2000
2001         ber_bvarray_add( &be->be_suffix, &pdn );
2002         ber_bvarray_add( &be->be_nsuffix, &ndn );
2003
2004         /* NOTE: only one monitor database is allowed,
2005          * so we use static storage */
2006         ldap_pvt_thread_mutex_init( &monitor_info.mi_cache_mutex );
2007
2008         be->be_private = &monitor_info;
2009
2010         be2 = select_backend( &ndn, 0, 0 );
2011         if ( be2 != be ) {
2012                 char    *type = be2->bd_info->bi_type;
2013
2014                 if ( overlay_is_over( be2 ) ) {
2015                         slap_overinfo   *oi = (slap_overinfo *)be2->bd_info->bi_private;
2016                         type = oi->oi_orig->bi_type;
2017                 }
2018
2019                 Debug( LDAP_DEBUG_ANY,
2020                         "\"monitor\" database serving namingContext \"%s\" "
2021                         "is hidden by \"%s\" database serving namingContext \"%s\".\n",
2022                         pdn.bv_val, type, be2->be_nsuffix[ 0 ].bv_val );
2023                 return -1;
2024         }
2025
2026         return 0;
2027 }
2028
2029 int
2030 monitor_back_db_open(
2031         BackendDB       *be )
2032 {
2033         monitor_info_t          *mi = (monitor_info_t *)be->be_private;
2034         struct monitor_subsys_t **ms;
2035         Entry                   *e, **ep, *root;
2036         monitor_entry_t         *mp;
2037         int                     i;
2038         struct berval           bv, rdn = BER_BVC(SLAPD_MONITOR_DN);
2039         struct tm               *tms;
2040 #ifdef HAVE_GMTIME_R
2041         struct tm               tm_buf;
2042 #endif
2043         static char             tmbuf[ LDAP_LUTIL_GENTIME_BUFSIZE ];
2044         struct berval   desc[] = {
2045                 BER_BVC("This subtree contains monitoring/managing objects."),
2046                 BER_BVC("This object contains information about this server."),
2047                 BER_BVC("Most of the information is held in operational"
2048                 " attributes, which must be explicitly requested."),
2049                 BER_BVNULL };
2050
2051         assert( be_monitor != NULL );
2052         if ( be != be_monitor ) {
2053                 be_monitor = be;
2054         }
2055
2056         /*
2057          * Start
2058          */
2059 #ifndef HAVE_GMTIME_R
2060         ldap_pvt_thread_mutex_lock( &gmtime_mutex );
2061 #endif
2062 #ifdef HACK_LOCAL_TIME
2063 # ifdef HAVE_LOCALTIME_R
2064         tms = localtime_r( &starttime, &tm_buf );
2065 # else
2066         tms = localtime( &starttime );
2067 # endif /* HAVE_LOCALTIME_R */
2068         lutil_localtime( tmbuf, sizeof(tmbuf), tms, -timezone );
2069 #else /* !HACK_LOCAL_TIME */
2070 # ifdef HAVE_GMTIME_R
2071         tms = gmtime_r( &starttime, &tm_buf );
2072 # else
2073         tms = gmtime( &starttime );
2074 # endif /* HAVE_GMTIME_R */
2075         lutil_gentime( tmbuf, sizeof(tmbuf), tms );
2076 #endif /* !HACK_LOCAL_TIME */
2077 #ifndef HAVE_GMTIME_R
2078         ldap_pvt_thread_mutex_unlock( &gmtime_mutex );
2079 #endif
2080
2081         mi->mi_startTime.bv_val = tmbuf;
2082         mi->mi_startTime.bv_len = strlen( tmbuf );
2083
2084         if ( BER_BVISEMPTY( &be->be_rootdn ) ) {
2085                 BER_BVSTR( &mi->mi_creatorsName, SLAPD_ANONYMOUS );
2086                 BER_BVSTR( &mi->mi_ncreatorsName, SLAPD_ANONYMOUS );
2087         } else {
2088                 mi->mi_creatorsName = be->be_rootdn;
2089                 mi->mi_ncreatorsName = be->be_rootndn;
2090         }
2091
2092         /*
2093          * creates the "cn=Monitor" entry
2094          */
2095         e = monitor_entry_stub( NULL, NULL, &rdn, mi->mi_oc_monitorServer, mi,
2096                 NULL, NULL );
2097
2098         if ( e == NULL) {
2099                 Debug( LDAP_DEBUG_ANY,
2100                         "unable to create \"%s\" entry\n",
2101                         SLAPD_MONITOR_DN, 0, 0 );
2102                 return( -1 );
2103         }
2104
2105         attr_merge_normalize( e, slap_schema.si_ad_description, desc, NULL );
2106
2107         bv.bv_val = strchr( (char *) Versionstr, '$' );
2108         if ( bv.bv_val != NULL ) {
2109                 char    *end;
2110
2111                 bv.bv_val++;
2112                 for ( ; bv.bv_val[ 0 ] == ' '; bv.bv_val++ )
2113                         ;
2114
2115                 end = strchr( bv.bv_val, '$' );
2116                 if ( end != NULL ) {
2117                         end--;
2118
2119                         for ( ; end > bv.bv_val && end[ 0 ] == ' '; end-- )
2120                                 ;
2121
2122                         end++;
2123
2124                         bv.bv_len = end - bv.bv_val;
2125
2126                 } else {
2127                         bv.bv_len = strlen( bv.bv_val );
2128                 }
2129
2130                 if ( attr_merge_normalize_one( e, mi->mi_ad_monitoredInfo,
2131                                         &bv, NULL ) ) {
2132                         Debug( LDAP_DEBUG_ANY,
2133                                 "unable to add monitoredInfo to \"%s\" entry\n",
2134                                 SLAPD_MONITOR_DN, 0, 0 );
2135                         return( -1 );
2136                 }
2137         }
2138
2139         mp = monitor_entrypriv_create();
2140         if ( mp == NULL ) {
2141                 return -1;
2142         }
2143         e->e_private = ( void * )mp;
2144         ep = &mp->mp_children;
2145
2146         if ( monitor_cache_add( mi, e ) ) {
2147                 Debug( LDAP_DEBUG_ANY,
2148                         "unable to add entry \"%s\" to cache\n",
2149                         SLAPD_MONITOR_DN, 0, 0 );
2150                 return -1;
2151         }
2152         root = e;
2153
2154         /*
2155          * Create all the subsystem specific entries
2156          */
2157         for ( i = 0; monitor_subsys[ i ] != NULL; i++ ) {
2158                 int             len = strlen( monitor_subsys[ i ]->mss_name );
2159                 struct berval   dn;
2160                 int             rc;
2161
2162                 dn.bv_len = len + sizeof( "cn=" ) - 1;
2163                 dn.bv_val = ch_calloc( sizeof( char ), dn.bv_len + 1 );
2164                 strcpy( dn.bv_val, "cn=" );
2165                 strcat( dn.bv_val, monitor_subsys[ i ]->mss_name );
2166                 rc = dnPretty( NULL, &dn, &monitor_subsys[ i ]->mss_rdn, NULL );
2167                 free( dn.bv_val );
2168                 if ( rc != LDAP_SUCCESS ) {
2169                         Debug( LDAP_DEBUG_ANY,
2170                                 "monitor RDN \"%s\" is invalid\n",
2171                                 dn.bv_val, 0, 0 );
2172                         return( -1 );
2173                 }
2174
2175                 e = monitor_entry_stub( &root->e_name, &root->e_nname,
2176                         &monitor_subsys[ i ]->mss_rdn, mi->mi_oc_monitorContainer, mi,
2177                         NULL, NULL );
2178
2179                 if ( e == NULL) {
2180                         Debug( LDAP_DEBUG_ANY,
2181                                 "unable to create \"%s\" entry\n",
2182                                 monitor_subsys[ i ]->mss_dn.bv_val, 0, 0 );
2183                         return( -1 );
2184                 }
2185                 monitor_subsys[i]->mss_dn = e->e_name;
2186                 monitor_subsys[i]->mss_ndn = e->e_nname;
2187
2188                 if ( !BER_BVISNULL( &monitor_subsys[ i ]->mss_desc[ 0 ] ) ) {
2189                         attr_merge_normalize( e, slap_schema.si_ad_description,
2190                                         monitor_subsys[ i ]->mss_desc, NULL );
2191                 }
2192
2193                 mp = monitor_entrypriv_create();
2194                 if ( mp == NULL ) {
2195                         return -1;
2196                 }
2197                 e->e_private = ( void * )mp;
2198                 mp->mp_info = monitor_subsys[ i ];
2199                 mp->mp_flags = monitor_subsys[ i ]->mss_flags;
2200
2201                 if ( monitor_cache_add( mi, e ) ) {
2202                         Debug( LDAP_DEBUG_ANY,
2203                                 "unable to add entry \"%s\" to cache\n",
2204                                 monitor_subsys[ i ]->mss_dn.bv_val, 0, 0 );
2205                         return -1;
2206                 }
2207
2208                 *ep = e;
2209                 ep = &mp->mp_next;
2210         }
2211
2212         assert( be != NULL );
2213
2214         be->be_private = mi;
2215
2216         /*
2217          * opens the monitor backend subsystems
2218          */
2219         for ( ms = monitor_subsys; ms[ 0 ] != NULL; ms++ ) {
2220                 if ( ms[ 0 ]->mss_open && ( *ms[ 0 ]->mss_open )( be, ms[ 0 ] ) )
2221                 {
2222                         return( -1 );
2223                 }
2224                 ms[ 0 ]->mss_flags |= MONITOR_F_OPENED;
2225         }
2226
2227         monitor_subsys_opened = 1;
2228
2229         if ( mi->mi_entry_limbo ) {
2230                 entry_limbo_t   *el = (entry_limbo_t *)mi->mi_entry_limbo;
2231
2232                 for ( ; el; ) {
2233                         entry_limbo_t   *tmp;
2234
2235                         switch ( el->el_type ) {
2236                         case LIMBO_ENTRY:
2237                                 monitor_back_register_entry(
2238                                                 el->el_e,
2239                                                 el->el_cb,
2240                                                 el->el_mss,
2241                                                 el->el_flags );
2242                                 break;
2243
2244                         case LIMBO_ENTRY_PARENT:
2245                                 monitor_back_register_entry_parent(
2246                                                 el->el_e,
2247                                                 el->el_cb,
2248                                                 el->el_mss,
2249                                                 el->el_flags,
2250                                                 &el->el_nbase,
2251                                                 el->el_scope,
2252                                                 &el->el_filter );
2253                                 break;
2254
2255
2256                         case LIMBO_ATTRS:
2257                                 monitor_back_register_entry_attrs(
2258                                                 &el->el_ndn,
2259                                                 el->el_a,
2260                                                 el->el_cb,
2261                                                 &el->el_nbase,
2262                                                 el->el_scope,
2263                                                 &el->el_filter );
2264                                 break;
2265
2266                         case LIMBO_CB:
2267                                 monitor_back_register_entry_callback(
2268                                                 &el->el_ndn,
2269                                                 el->el_cb,
2270                                                 &el->el_nbase,
2271                                                 el->el_scope,
2272                                                 &el->el_filter );
2273                                 break;
2274
2275                         default:
2276                                 assert( 0 );
2277                         }
2278
2279                         if ( el->el_e ) {
2280                                 entry_free( el->el_e );
2281                         }
2282                         if ( el->el_a ) {
2283                                 attrs_free( el->el_a );
2284                         }
2285                         if ( !BER_BVISNULL( &el->el_ndn ) ) {
2286                                 ber_memfree( el->el_ndn.bv_val );
2287                         }
2288                         if ( !BER_BVISNULL( &el->el_nbase ) ) {
2289                                 ber_memfree( el->el_nbase.bv_val );
2290                         }
2291                         if ( !BER_BVISNULL( &el->el_filter ) ) {
2292                                 ber_memfree( el->el_filter.bv_val );
2293                         }
2294
2295                         tmp = el;
2296                         el = el->el_next;
2297                         ch_free( tmp );
2298                 }
2299
2300                 mi->mi_entry_limbo = NULL;
2301         }
2302
2303         return( 0 );
2304 }
2305
2306 int
2307 monitor_back_config(
2308         BackendInfo     *bi,
2309         const char      *fname,
2310         int             lineno,
2311         int             argc,
2312         char            **argv )
2313 {
2314         /*
2315          * eventually, will hold backend specific configuration parameters
2316          */
2317         return SLAP_CONF_UNKNOWN;
2318 }
2319
2320 #if 0
2321 int
2322 monitor_back_db_config(
2323         Backend     *be,
2324         const char  *fname,
2325         int         lineno,
2326         int         argc,
2327         char        **argv )
2328 {
2329         monitor_info_t  *mi = ( monitor_info_t * )be->be_private;
2330
2331         /*
2332          * eventually, will hold database specific configuration parameters
2333          */
2334         return SLAP_CONF_UNKNOWN;
2335 }
2336 #endif
2337
2338 int
2339 monitor_back_db_destroy(
2340         BackendDB       *be )
2341 {
2342         monitor_info_t  *mi = ( monitor_info_t * )be->be_private;
2343
2344         if ( mi == NULL ) {
2345                 return -1;
2346         }
2347
2348         /*
2349          * FIXME: destroys all the data
2350          */
2351         /* NOTE: mi points to static storage; don't free it */
2352
2353         (void)monitor_cache_destroy( mi );
2354
2355         if ( monitor_subsys ) {
2356                 int     i;
2357
2358                 for ( i = 0; monitor_subsys[ i ] != NULL; i++ ) {
2359                         if ( monitor_subsys[ i ]->mss_destroy ) {
2360                                 monitor_subsys[ i ]->mss_destroy( be, monitor_subsys[ i ] );
2361                         }
2362
2363                         if ( !BER_BVISNULL( &monitor_subsys[ i ]->mss_rdn ) ) {
2364                                 ch_free( monitor_subsys[ i ]->mss_rdn.bv_val );
2365                         }
2366                 }
2367
2368                 ch_free( monitor_subsys );
2369         }
2370
2371         ldap_pvt_thread_mutex_destroy( &monitor_info.mi_cache_mutex );
2372
2373         be->be_private = NULL;
2374
2375         return 0;
2376 }
2377
2378 #if SLAPD_MONITOR == SLAPD_MOD_DYNAMIC
2379
2380 /* conditionally define the init_module() function */
2381 SLAP_BACKEND_INIT_MODULE( monitor )
2382
2383 #endif /* SLAPD_MONITOR == SLAPD_MOD_DYNAMIC */
2384