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 2001-2007 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                 if ( *elpp != NULL ) {
 996                         el.el_next = NULL;
 997                         **elpp = el;
 998
 999                 } else {
1000                         if ( !BER_BVISNULL( &el.el_filter ) ) {
1001                                 ch_free( el.el_filter.bv_val );
1002                         }
1003                         if ( el.el_a != NULL ) {
1004                                 attrs_free( el.el_a );
1005                         }
1006                         if ( !BER_BVISNULL( &el.el_nbase ) ) {
1007                                 ch_free( &el.el_nbase.bv_val );
1008                         }
1009                         if ( !BER_BVISNULL( &el.el_ndn ) ) {
1010                                 ch_free( el.el_ndn.bv_val );
1011                         }
1012                         return -1;
1013                 }
1014         }
1015
1016         return 0;
1017 }
1018
1019 int
1020 monitor_back_register_entry_callback(
1021         struct berval           *ndn,
1022         monitor_callback_t      *cb,
1023         struct berval           *nbase,
1024         int                     scope,
1025         struct berval           *filter )
1026 {
1027         return monitor_back_register_entry_attrs( ndn, NULL, cb,
1028                         nbase, scope, filter );
1029 }
1030
1031 /*
1032  * TODO: add corresponding calls to remove installed callbacks, entries
1033  * and so, in case the entity that installed them is removed (e.g. a
1034  * database, via back-config)
1035  */
1036 int
1037 monitor_back_unregister_entry(
1038         struct berval   *ndn )
1039 {
1040         monitor_info_t  *mi;
1041
1042         if ( be_monitor == NULL ) {
1043                 Debug( LDAP_DEBUG_ANY,
1044                         "monitor_back_unregister_entry(\"%s\"): "
1045                         "monitor database not configured.\n",
1046                         ndn->bv_val, 0, 0 );
1047
1048                 return -1;
1049         }
1050
1051         /* entry will be regularly freed, and resources released
1052          * according to callbacks */
1053         if ( slapd_shutdown ) {
1054                 return 0;
1055         }
1056
1057         mi = ( monitor_info_t * )be_monitor->be_private;
1058
1059         assert( mi != NULL );
1060
1061         if ( monitor_subsys_opened ) {
1062                 Entry                   *e = NULL;
1063                 monitor_entry_t         *mp = NULL;
1064                 monitor_callback_t      *cb = NULL;
1065
1066                 if ( monitor_cache_remove( mi, ndn, &e ) != 0 ) {
1067                         /* entry does not exist */
1068                         Debug( LDAP_DEBUG_ANY,
1069                                 "monitor_back_unregister_entry(\"%s\"): "
1070                                 "entry removal failed.\n",
1071                                 ndn->bv_val, 0, 0 );
1072                         return -1;
1073                 }
1074
1075                 mp = (monitor_entry_t *)e->e_private;
1076                 assert( mp != NULL );
1077
1078                 for ( cb = mp->mp_cb; cb != NULL; ) {
1079                         monitor_callback_t      *next = cb->mc_next;
1080
1081                         if ( cb->mc_free ) {
1082                                 (void)cb->mc_free( e, &cb->mc_private );
1083                         }
1084                         ch_free( cb );
1085
1086                         cb = next;
1087                 }
1088
1089                 ch_free( mp );
1090                 e->e_private = NULL;
1091                 entry_free( e );
1092
1093         } else {
1094                 entry_limbo_t   **elpp;
1095
1096                 for ( elpp = (entry_limbo_t **)&mi->mi_entry_limbo;
1097                         *elpp;
1098                         elpp = &(*elpp)->el_next )
1099                 {
1100                         entry_limbo_t   *elp = *elpp;
1101
1102                         if ( elp->el_type == LIMBO_ENTRY
1103                                 && dn_match( ndn, &elp->el_e->e_nname ) )
1104                         {
1105                                 monitor_callback_t      *cb, *next;
1106
1107                                 for ( cb = elp->el_cb; cb; cb = next ) {
1108                                         /* FIXME: call callbacks? */
1109                                         next = cb->mc_next;
1110                                         ch_free( cb );
1111                                 }
1112                                 assert( elp->el_e != NULL );
1113                                 elp->el_e->e_private = NULL;
1114                                 entry_free( elp->el_e );
1115                                 *elpp = elp->el_next;
1116                                 ch_free( elp );
1117                                 elpp = NULL;
1118                                 break;
1119                         }
1120                 }
1121
1122                 if ( elpp != NULL ) {
1123                         /* not found!  where did it go? */
1124                         return 1;
1125                 }
1126         }
1127
1128         return 0;
1129 }
1130
1131 int
1132 monitor_back_unregister_entry_parent(
1133         struct berval           *nrdn,
1134         monitor_callback_t      *target_cb,
1135         struct berval           *nbase,
1136         int                     scope,
1137         struct berval           *filter )
1138 {
1139         monitor_info_t  *mi;
1140         struct berval   ndn = BER_BVNULL;
1141
1142         if ( be_monitor == NULL ) {
1143                 Debug( LDAP_DEBUG_ANY,
1144                         "monitor_back_unregister_entry_parent(base=\"%s\" scope=%s filter=\"%s\"): "
1145                         "monitor database not configured.\n",
1146                         BER_BVISNULL( nbase ) ? "" : nbase->bv_val,
1147                         ldap_pvt_scope2str( scope ),
1148                         BER_BVISNULL( filter ) ? "" : filter->bv_val );
1149
1150                 return -1;
1151         }
1152
1153         /* entry will be regularly freed, and resources released
1154          * according to callbacks */
1155         if ( slapd_shutdown ) {
1156                 return 0;
1157         }
1158
1159         mi = ( monitor_info_t * )be_monitor->be_private;
1160
1161         assert( mi != NULL );
1162
1163         if ( ( nrdn == NULL || BER_BVISNULL( nrdn ) )
1164                         && BER_BVISNULL( filter ) )
1165         {
1166                 /* need a filter */
1167                 Debug( LDAP_DEBUG_ANY,
1168                         "monitor_back_unregister_entry_parent(\"\"): "
1169                         "need a valid filter\n",
1170                         0, 0, 0 );
1171                 return -1;
1172         }
1173
1174         if ( monitor_subsys_opened ) {
1175                 Entry                   *e = NULL;
1176                 monitor_entry_t         *mp = NULL;
1177
1178                 if ( monitor_search2ndn( nbase, scope, filter, &ndn ) ) {
1179                         /* entry does not exist */
1180                         Debug( LDAP_DEBUG_ANY,
1181                                 "monitor_back_unregister_entry_parent(\"\"): "
1182                                 "base=\"%s\" scope=%s filter=\"%s\": "
1183                                 "unable to find entry\n",
1184                                 nbase->bv_val ? nbase->bv_val : "\"\"",
1185                                 ldap_pvt_scope2str( scope ),
1186                                 filter->bv_val );
1187                         return -1;
1188                 }
1189
1190                 if ( monitor_cache_remove( mi, &ndn, &e ) != 0 ) {
1191                         /* entry does not exist */
1192                         Debug( LDAP_DEBUG_ANY,
1193                                 "monitor_back_unregister_entry(\"%s\"): "
1194                                 "entry removal failed.\n",
1195                                 ndn.bv_val, 0, 0 );
1196                         ber_memfree( ndn.bv_val );
1197                         return -1;
1198                 }
1199                 ber_memfree( ndn.bv_val );
1200
1201                 mp = (monitor_entry_t *)e->e_private;
1202                 assert( mp != NULL );
1203
1204                 if ( target_cb != NULL ) {
1205                         monitor_callback_t      **cbp;
1206
1207                         for ( cbp = &mp->mp_cb; *cbp != NULL; cbp = &(*cbp)->mc_next ) {
1208                                 if ( *cbp == target_cb ) {
1209                                         if ( (*cbp)->mc_free ) {
1210                                                 (void)(*cbp)->mc_free( e, &(*cbp)->mc_private );
1211                                         }
1212                                         *cbp = (*cbp)->mc_next;
1213                                         ch_free( target_cb );
1214                                         break;
1215                                 }
1216                         }
1217                 }
1218
1219
1220                 ch_free( mp );
1221                 e->e_private = NULL;
1222                 entry_free( e );
1223
1224         } else {
1225                 entry_limbo_t   **elpp;
1226
1227                 for ( elpp = (entry_limbo_t **)&mi->mi_entry_limbo;
1228                         *elpp;
1229                         elpp = &(*elpp)->el_next )
1230                 {
1231                         entry_limbo_t   *elp = *elpp;
1232
1233                         if ( elp->el_type == LIMBO_ENTRY_PARENT
1234                                 && dn_match( nrdn, &elp->el_e->e_nname )
1235                                 && dn_match( nbase, &elp->el_nbase )
1236                                 && scope == elp->el_scope
1237                                 && bvmatch( filter, &elp->el_filter ) )
1238                         {
1239                                 monitor_callback_t      *cb, *next;
1240
1241                                 for ( cb = elp->el_cb; cb; cb = next ) {
1242                                         /* FIXME: call callbacks? */
1243                                         next = cb->mc_next;
1244                                         ch_free( cb );
1245                                 }
1246                                 assert( elp->el_e != NULL );
1247                                 elp->el_e->e_private = NULL;
1248                                 entry_free( elp->el_e );
1249                                 if ( !BER_BVISNULL( &elp->el_nbase ) ) {
1250                                         ch_free( elp->el_nbase.bv_val );
1251                                 }
1252                                 if ( !BER_BVISNULL( &elp->el_filter ) ) {
1253                                         ch_free( elp->el_filter.bv_val );
1254                                 }
1255                                 *elpp = elp->el_next;
1256                                 ch_free( elp );
1257                                 elpp = NULL;
1258                                 break;
1259                         }
1260                 }
1261
1262                 if ( elpp != NULL ) {
1263                         /* not found!  where did it go? */
1264                         return 1;
1265                 }
1266         }
1267
1268         return 0;
1269 }
1270
1271 int
1272 monitor_back_unregister_entry_attrs(
1273         struct berval           *ndn_in,
1274         Attribute               *target_a,
1275         monitor_callback_t      *target_cb,
1276         struct berval           *nbase,
1277         int                     scope,
1278         struct berval           *filter )
1279 {
1280         monitor_info_t  *mi;
1281         struct berval   ndn = BER_BVNULL;
1282         char            *fname = ( target_a == NULL ? "callback" : "attrs" );
1283
1284         if ( be_monitor == NULL ) {
1285                 char            buf[ SLAP_TEXT_BUFLEN ];
1286
1287                 snprintf( buf, sizeof( buf ),
1288                         "monitor_back_unregister_entry_%s(base=\"%s\" scope=%s filter=\"%s\"): "
1289                         "monitor database not configured.\n",
1290                         fname,
1291                         BER_BVISNULL( nbase ) ? "" : nbase->bv_val,
1292                         ldap_pvt_scope2str( scope ),
1293                         BER_BVISNULL( filter ) ? "" : filter->bv_val );
1294                 Debug( LDAP_DEBUG_ANY, "%s\n", buf, 0, 0 );
1295
1296                 return -1;
1297         }
1298
1299         /* entry will be regularly freed, and resources released
1300          * according to callbacks */
1301         if ( slapd_shutdown ) {
1302                 return 0;
1303         }
1304
1305         mi = ( monitor_info_t * )be_monitor->be_private;
1306
1307         assert( mi != NULL );
1308
1309         if ( ndn_in != NULL ) {
1310                 ndn = *ndn_in;
1311         }
1312
1313         if ( target_a == NULL && target_cb == NULL ) {
1314                 /* nothing to do */
1315                 return -1;
1316         }
1317
1318         if ( ( ndn_in == NULL || BER_BVISNULL( &ndn ) )
1319                         && BER_BVISNULL( filter ) )
1320         {
1321                 /* need a filter */
1322                 Debug( LDAP_DEBUG_ANY,
1323                         "monitor_back_unregister_entry_%s(\"\"): "
1324                         "need a valid filter\n",
1325                         fname, 0, 0 );
1326                 return -1;
1327         }
1328
1329         if ( monitor_subsys_opened ) {
1330                 Entry                   *e = NULL;
1331                 monitor_entry_t         *mp = NULL;
1332                 int                     freeit = 0;
1333
1334                 if ( BER_BVISNULL( &ndn ) ) {
1335                         if ( monitor_search2ndn( nbase, scope, filter, &ndn ) ) {
1336                                 char            buf[ SLAP_TEXT_BUFLEN ];
1337
1338                                 snprintf( buf, sizeof( buf ),
1339                                         "monitor_back_unregister_entry_%s(\"\"): "
1340                                         "base=\"%s\" scope=%d filter=\"%s\": "
1341                                         "unable to find entry\n",
1342                                         fname,
1343                                         nbase->bv_val ? nbase->bv_val : "\"\"",
1344                                         scope, filter->bv_val );
1345
1346                                 /* entry does not exist */
1347                                 Debug( LDAP_DEBUG_ANY, "%s\n", buf, 0, 0 );
1348                                 return -1;
1349                         }
1350
1351                         freeit = 1;
1352                 }
1353
1354                 if ( monitor_cache_get( mi, &ndn, &e ) != 0 ) {
1355                         /* entry does not exist */
1356                         Debug( LDAP_DEBUG_ANY,
1357                                 "monitor_back_unregister_entry(\"%s\"): "
1358                                 "entry removal failed.\n",
1359                                 ndn.bv_val, 0, 0 );
1360                         return -1;
1361                 }
1362
1363                 mp = (monitor_entry_t *)e->e_private;
1364                 assert( mp != NULL );
1365
1366                 if ( target_cb != NULL ) {
1367                         monitor_callback_t      **cbp;
1368
1369                         for ( cbp = &mp->mp_cb; *cbp != NULL; cbp = &(*cbp)->mc_next ) {
1370                                 if ( *cbp == target_cb ) {
1371                                         if ( (*cbp)->mc_free ) {
1372                                                 (void)(*cbp)->mc_free( e, &(*cbp)->mc_private );
1373                                         }
1374                                         *cbp = (*cbp)->mc_next;
1375                                         ch_free( target_cb );
1376                                         break;
1377                                 }
1378                         }
1379                 }
1380
1381                 if ( target_a != NULL ) {
1382                         Attribute       *a;
1383
1384                         for ( a = target_a; a != NULL; a = a->a_next ) {
1385                                 Modification    mod = { 0 };
1386                                 const char      *text;
1387                                 char            textbuf[ SLAP_TEXT_BUFLEN ];
1388
1389                                 mod.sm_op = LDAP_MOD_DELETE;
1390                                 mod.sm_desc = a->a_desc;
1391                                 mod.sm_values = a->a_vals;
1392                                 mod.sm_nvalues = a->a_nvals;
1393
1394                                 (void)modify_delete_values( e, &mod, 1,
1395                                         &text, textbuf, sizeof( textbuf ) );
1396                         }
1397                 }
1398
1399                 if ( freeit ) {
1400                         ber_memfree( ndn.bv_val );
1401                 }
1402
1403                 if ( e ) {
1404                         monitor_cache_release( mi, e );
1405                 }
1406
1407         } else {
1408                 entry_limbo_t   **elpp;
1409
1410                 for ( elpp = (entry_limbo_t **)&mi->mi_entry_limbo;
1411                         *elpp;
1412                         elpp = &(*elpp)->el_next )
1413                 {
1414                         entry_limbo_t   *elp = *elpp;
1415
1416                         if ( elp->el_type == LIMBO_ATTRS
1417                                 && dn_match( nbase, &elp->el_nbase )
1418                                 && scope == elp->el_scope
1419                                 && bvmatch( filter, &elp->el_filter ) )
1420                         {
1421                                 monitor_callback_t      *cb, *next;
1422
1423                                 for ( cb = elp->el_cb; cb; cb = next ) {
1424                                         /* FIXME: call callbacks? */
1425                                         next = cb->mc_next;
1426                                         ch_free( cb );
1427                                 }
1428                                 assert( elp->el_e == NULL );
1429                                 if ( elp->el_a != NULL ) {
1430                                         attrs_free( elp->el_a );
1431                                 }
1432                                 if ( !BER_BVISNULL( &elp->el_nbase ) ) {
1433                                         ch_free( elp->el_nbase.bv_val );
1434                                 }
1435                                 if ( !BER_BVISNULL( &elp->el_filter ) ) {
1436                                         ch_free( elp->el_filter.bv_val );
1437                                 }
1438                                 *elpp = elp->el_next;
1439                                 ch_free( elp );
1440                                 elpp = NULL;
1441                                 break;
1442                         }
1443                 }
1444
1445                 if ( elpp != NULL ) {
1446                         /* not found!  where did it go? */
1447                         return 1;
1448                 }
1449         }
1450
1451         return 0;
1452 }
1453
1454 int
1455 monitor_back_unregister_entry_callback(
1456         struct berval           *ndn,
1457         monitor_callback_t      *cb,
1458         struct berval           *nbase,
1459         int                     scope,
1460         struct berval           *filter )
1461 {
1462         /* TODO: lookup entry (by ndn, if not NULL, and/or by callback);
1463          * unregister the callback; if a is not null, unregister the
1464          * given attrs.  In any case, call cb->cb_free */
1465         return monitor_back_unregister_entry_attrs( ndn,
1466                 NULL, cb, nbase, scope, filter );
1467 }
1468
1469 monitor_subsys_t *
1470 monitor_back_get_subsys( const char *name )
1471 {
1472         if ( monitor_subsys != NULL ) {
1473                 int     i;
1474
1475                 for ( i = 0; monitor_subsys[ i ] != NULL; i++ ) {
1476                         if ( strcasecmp( monitor_subsys[ i ]->mss_name, name ) == 0 ) {
1477                                 return monitor_subsys[ i ];
1478                         }
1479                 }
1480         }
1481
1482         return NULL;
1483 }
1484
1485 monitor_subsys_t *
1486 monitor_back_get_subsys_by_dn(
1487         struct berval   *ndn,
1488         int             sub )
1489 {
1490         if ( monitor_subsys != NULL ) {
1491                 int     i;
1492
1493                 if ( sub ) {
1494                         for ( i = 0; monitor_subsys[ i ] != NULL; i++ ) {
1495                                 if ( dnIsSuffix( ndn, &monitor_subsys[ i ]->mss_ndn ) ) {
1496                                         return monitor_subsys[ i ];
1497                                 }
1498                         }
1499
1500                 } else {
1501                         for ( i = 0; monitor_subsys[ i ] != NULL; i++ ) {
1502                                 if ( dn_match( ndn, &monitor_subsys[ i ]->mss_ndn ) ) {
1503                                         return monitor_subsys[ i ];
1504                                 }
1505                         }
1506                 }
1507         }
1508
1509         return NULL;
1510 }
1511
1512 int
1513 monitor_back_initialize(
1514         BackendInfo     *bi )
1515 {
1516         static char             *controls[] = {
1517                 LDAP_CONTROL_MANAGEDSAIT,
1518                 NULL
1519         };
1520
1521         static ConfigTable monitorcfg[] = {
1522                 { NULL, NULL, 0, 0, 0, ARG_IGNORED,
1523                         NULL, NULL, NULL, NULL }
1524         };
1525
1526         static ConfigOCs monitorocs[] = {
1527                 { "( OLcfgDbOc:4.1 "
1528                         "NAME 'olcMonitorConfig' "
1529                         "DESC 'Monitor backend configuration' "
1530                         "SUP olcDatabaseConfig "
1531                         ")",
1532                                 Cft_Database, monitorcfg },
1533                 { NULL, 0, NULL }
1534         };
1535
1536         struct m_s {
1537                 char    *schema;
1538                 slap_mask_t flags;
1539                 int     offset;
1540         } moc[] = {
1541                 { "( 1.3.6.1.4.1.4203.666.3.16.1 "
1542                         "NAME 'monitor' "
1543                         "DESC 'OpenLDAP system monitoring' "
1544                         "SUP top STRUCTURAL "
1545                         "MUST cn "
1546                         "MAY ( "
1547                                 "description "
1548                                 "$ seeAlso "
1549                                 "$ labeledURI "
1550                                 "$ monitoredInfo "
1551                                 "$ managedInfo "
1552                                 "$ monitorOverlay "
1553                         ") )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
1554                         offsetof(monitor_info_t, mi_oc_monitor) },
1555                 { "( 1.3.6.1.4.1.4203.666.3.16.2 "
1556                         "NAME 'monitorServer' "
1557                         "DESC 'Server monitoring root entry' "
1558                         "SUP monitor STRUCTURAL )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
1559                         offsetof(monitor_info_t, mi_oc_monitorServer) },
1560                 { "( 1.3.6.1.4.1.4203.666.3.16.3 "
1561                         "NAME 'monitorContainer' "
1562                         "DESC 'monitor container class' "
1563                         "SUP monitor STRUCTURAL )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
1564                         offsetof(monitor_info_t, mi_oc_monitorContainer) },
1565                 { "( 1.3.6.1.4.1.4203.666.3.16.4 "
1566                         "NAME 'monitorCounterObject' "
1567                         "DESC 'monitor counter class' "
1568                         "SUP monitor STRUCTURAL )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
1569                         offsetof(monitor_info_t, mi_oc_monitorCounterObject) },
1570                 { "( 1.3.6.1.4.1.4203.666.3.16.5 "
1571                         "NAME 'monitorOperation' "
1572                         "DESC 'monitor operation class' "
1573                         "SUP monitor STRUCTURAL )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
1574                         offsetof(monitor_info_t, mi_oc_monitorOperation) },
1575                 { "( 1.3.6.1.4.1.4203.666.3.16.6 "
1576                         "NAME 'monitorConnection' "
1577                         "DESC 'monitor connection class' "
1578                         "SUP monitor STRUCTURAL )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
1579                         offsetof(monitor_info_t, mi_oc_monitorConnection) },
1580                 { "( 1.3.6.1.4.1.4203.666.3.16.7 "
1581                         "NAME 'managedObject' "
1582                         "DESC 'monitor managed entity class' "
1583                         "SUP monitor STRUCTURAL )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
1584                         offsetof(monitor_info_t, mi_oc_managedObject) },
1585                 { "( 1.3.6.1.4.1.4203.666.3.16.8 "
1586                         "NAME 'monitoredObject' "
1587                         "DESC 'monitor monitored entity class' "
1588                         "SUP monitor STRUCTURAL )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
1589                         offsetof(monitor_info_t, mi_oc_monitoredObject) },
1590                 { NULL, 0, -1 }
1591         }, mat[] = {
1592                 { "( 1.3.6.1.4.1.4203.666.1.55.1 "
1593                         "NAME 'monitoredInfo' "
1594                         "DESC 'monitored info' "
1595                         /* "SUP name " */
1596                         "EQUALITY caseIgnoreMatch "
1597                         "SUBSTR caseIgnoreSubstringsMatch "
1598                         "SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{32768} "
1599                         "NO-USER-MODIFICATION "
1600                         "USAGE dSAOperation )", SLAP_AT_HIDE,
1601                         offsetof(monitor_info_t, mi_ad_monitoredInfo) },
1602                 { "( 1.3.6.1.4.1.4203.666.1.55.2 "
1603                         "NAME 'managedInfo' "
1604                         "DESC 'monitor managed info' "
1605                         "SUP name )", SLAP_AT_HIDE,
1606                         offsetof(monitor_info_t, mi_ad_managedInfo) },
1607                 { "( 1.3.6.1.4.1.4203.666.1.55.3 "
1608                         "NAME 'monitorCounter' "
1609                         "DESC 'monitor counter' "
1610                         "EQUALITY integerMatch "
1611                         "ORDERING integerOrderingMatch "
1612                         "SYNTAX 1.3.6.1.4.1.1466.115.121.1.27 "
1613                         "NO-USER-MODIFICATION "
1614                         "USAGE dSAOperation )", SLAP_AT_HIDE,
1615                         offsetof(monitor_info_t, mi_ad_monitorCounter) },
1616                 { "( 1.3.6.1.4.1.4203.666.1.55.4 "
1617                         "NAME 'monitorOpCompleted' "
1618                         "DESC 'monitor completed operations' "
1619                         "SUP monitorCounter "
1620                         "NO-USER-MODIFICATION "
1621                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1622                         offsetof(monitor_info_t, mi_ad_monitorOpCompleted) },
1623                 { "( 1.3.6.1.4.1.4203.666.1.55.5 "
1624                         "NAME 'monitorOpInitiated' "
1625                         "DESC 'monitor initiated operations' "
1626                         "SUP monitorCounter "
1627                         "NO-USER-MODIFICATION "
1628                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1629                         offsetof(monitor_info_t, mi_ad_monitorOpInitiated) },
1630                 { "( 1.3.6.1.4.1.4203.666.1.55.6 "
1631                         "NAME 'monitorConnectionNumber' "
1632                         "DESC 'monitor connection number' "
1633                         "SUP monitorCounter "
1634                         "NO-USER-MODIFICATION "
1635                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1636                         offsetof(monitor_info_t, mi_ad_monitorConnectionNumber) },
1637                 { "( 1.3.6.1.4.1.4203.666.1.55.7 "
1638                         "NAME 'monitorConnectionAuthzDN' "
1639                         "DESC 'monitor connection authorization DN' "
1640                         /* "SUP distinguishedName " */
1641                         "EQUALITY distinguishedNameMatch "
1642                         "SYNTAX 1.3.6.1.4.1.1466.115.121.1.12 "
1643                         "NO-USER-MODIFICATION "
1644                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1645                         offsetof(monitor_info_t, mi_ad_monitorConnectionAuthzDN) },
1646                 { "( 1.3.6.1.4.1.4203.666.1.55.8 "
1647                         "NAME 'monitorConnectionLocalAddress' "
1648                         "DESC 'monitor connection local address' "
1649                         "SUP monitoredInfo "
1650                         "NO-USER-MODIFICATION "
1651                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1652                         offsetof(monitor_info_t, mi_ad_monitorConnectionLocalAddress) },
1653                 { "( 1.3.6.1.4.1.4203.666.1.55.9 "
1654                         "NAME 'monitorConnectionPeerAddress' "
1655                         "DESC 'monitor connection peer address' "
1656                         "SUP monitoredInfo "
1657                         "NO-USER-MODIFICATION "
1658                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1659                         offsetof(monitor_info_t, mi_ad_monitorConnectionPeerAddress) },
1660                 { "( 1.3.6.1.4.1.4203.666.1.55.10 "
1661                         "NAME 'monitorTimestamp' "
1662                         "DESC 'monitor timestamp' "
1663                         "EQUALITY generalizedTimeMatch "
1664                         "ORDERING generalizedTimeOrderingMatch "
1665                         "SYNTAX 1.3.6.1.4.1.1466.115.121.1.24 "
1666                         "SINGLE-VALUE "
1667                         "NO-USER-MODIFICATION "
1668                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1669                         offsetof(monitor_info_t, mi_ad_monitorTimestamp) },
1670                 { "( 1.3.6.1.4.1.4203.666.1.55.11 "
1671                         "NAME 'monitorOverlay' "
1672                         "DESC 'name of overlays defined for a given database' "
1673                         "SUP monitoredInfo "
1674                         "NO-USER-MODIFICATION "
1675                         "USAGE dSAOperation )", SLAP_AT_HIDE,
1676                         offsetof(monitor_info_t, mi_ad_monitorOverlay) },
1677                 { "( 1.3.6.1.4.1.4203.666.1.55.12 "
1678                         "NAME 'readOnly' "
1679                         "DESC 'read/write status of a given database' "
1680                         "EQUALITY booleanMatch "
1681                         "SYNTAX 1.3.6.1.4.1.1466.115.121.1.7 "
1682                         "SINGLE-VALUE "
1683                         "USAGE dSAOperation )", SLAP_AT_HIDE,
1684                         offsetof(monitor_info_t, mi_ad_readOnly) },
1685                 { "( 1.3.6.1.4.1.4203.666.1.55.13 "
1686                         "NAME 'restrictedOperation' "
1687                         "DESC 'name of restricted operation for a given database' "
1688                         "SUP managedInfo )", SLAP_AT_HIDE,
1689                         offsetof(monitor_info_t, mi_ad_restrictedOperation ) },
1690                 { "( 1.3.6.1.4.1.4203.666.1.55.14 "
1691                         "NAME 'monitorConnectionProtocol' "
1692                         "DESC 'monitor connection protocol' "
1693                         "SUP monitoredInfo "
1694                         "NO-USER-MODIFICATION "
1695                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1696                         offsetof(monitor_info_t, mi_ad_monitorConnectionProtocol) },
1697                 { "( 1.3.6.1.4.1.4203.666.1.55.15 "
1698                         "NAME 'monitorConnectionOpsReceived' "
1699                         "DESC 'monitor number of operations received by the connection' "
1700                         "SUP monitorCounter "
1701                         "NO-USER-MODIFICATION "
1702                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1703                         offsetof(monitor_info_t, mi_ad_monitorConnectionOpsReceived) },
1704                 { "( 1.3.6.1.4.1.4203.666.1.55.16 "
1705                         "NAME 'monitorConnectionOpsExecuting' "
1706                         "DESC 'monitor number of operations in execution within the connection' "
1707                         "SUP monitorCounter "
1708                         "NO-USER-MODIFICATION "
1709                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1710                         offsetof(monitor_info_t, mi_ad_monitorConnectionOpsExecuting) },
1711                 { "( 1.3.6.1.4.1.4203.666.1.55.17 "
1712                         "NAME 'monitorConnectionOpsPending' "
1713                         "DESC 'monitor number of pending operations within the connection' "
1714                         "SUP monitorCounter "
1715                         "NO-USER-MODIFICATION "
1716                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1717                         offsetof(monitor_info_t, mi_ad_monitorConnectionOpsPending) },
1718                 { "( 1.3.6.1.4.1.4203.666.1.55.18 "
1719                         "NAME 'monitorConnectionOpsCompleted' "
1720                         "DESC 'monitor number of operations completed within the connection' "
1721                         "SUP monitorCounter "
1722                         "NO-USER-MODIFICATION "
1723                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1724                         offsetof(monitor_info_t, mi_ad_monitorConnectionOpsCompleted) },
1725                 { "( 1.3.6.1.4.1.4203.666.1.55.19 "
1726                         "NAME 'monitorConnectionGet' "
1727                         "DESC 'number of times connection_get() was called so far' "
1728                         "SUP monitorCounter "
1729                         "NO-USER-MODIFICATION "
1730                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1731                         offsetof(monitor_info_t, mi_ad_monitorConnectionGet) },
1732                 { "( 1.3.6.1.4.1.4203.666.1.55.20 "
1733                         "NAME 'monitorConnectionRead' "
1734                         "DESC 'number of times connection_read() was called so far' "
1735                         "SUP monitorCounter "
1736                         "NO-USER-MODIFICATION "
1737                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1738                         offsetof(monitor_info_t, mi_ad_monitorConnectionRead) },
1739                 { "( 1.3.6.1.4.1.4203.666.1.55.21 "
1740                         "NAME 'monitorConnectionWrite' "
1741                         "DESC 'number of times connection_write() was called so far' "
1742                         "SUP monitorCounter "
1743                         "NO-USER-MODIFICATION "
1744                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1745                         offsetof(monitor_info_t, mi_ad_monitorConnectionWrite) },
1746                 { "( 1.3.6.1.4.1.4203.666.1.55.22 "
1747                         "NAME 'monitorConnectionMask' "
1748                         "DESC 'monitor connection mask' "
1749                         "SUP monitoredInfo "
1750                         "NO-USER-MODIFICATION "
1751                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1752                         offsetof(monitor_info_t, mi_ad_monitorConnectionMask) },
1753                 { "( 1.3.6.1.4.1.4203.666.1.55.23 "
1754                         "NAME 'monitorConnectionListener' "
1755                         "DESC 'monitor connection listener' "
1756                         "SUP monitoredInfo "
1757                         "NO-USER-MODIFICATION "
1758                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1759                         offsetof(monitor_info_t, mi_ad_monitorConnectionListener) },
1760                 { "( 1.3.6.1.4.1.4203.666.1.55.24 "
1761                         "NAME 'monitorConnectionPeerDomain' "
1762                         "DESC 'monitor connection peer domain' "
1763                         "SUP monitoredInfo "
1764                         "NO-USER-MODIFICATION "
1765                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1766                         offsetof(monitor_info_t, mi_ad_monitorConnectionPeerDomain) },
1767                 { "( 1.3.6.1.4.1.4203.666.1.55.25 "
1768                         "NAME 'monitorConnectionStartTime' "
1769                         "DESC 'monitor connection start time' "
1770                         "SUP monitorTimestamp "
1771                         "SINGLE-VALUE "
1772                         "NO-USER-MODIFICATION "
1773                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1774                         offsetof(monitor_info_t, mi_ad_monitorConnectionStartTime) },
1775                 { "( 1.3.6.1.4.1.4203.666.1.55.26 "
1776                         "NAME 'monitorConnectionActivityTime' "
1777                         "DESC 'monitor connection activity time' "
1778                         "SUP monitorTimestamp "
1779                         "SINGLE-VALUE "
1780                         "NO-USER-MODIFICATION "
1781                         "USAGE dSAOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
1782                         offsetof(monitor_info_t, mi_ad_monitorConnectionActivityTime) },
1783                 { "( 1.3.6.1.4.1.4203.666.1.55.27 "
1784                         "NAME 'monitorIsShadow' "
1785                         "DESC 'TRUE if the database is shadow' "
1786                         "EQUALITY booleanMatch "
1787                         "SYNTAX 1.3.6.1.4.1.1466.115.121.1.7 "
1788                         "SINGLE-VALUE "
1789                         "USAGE dSAOperation )", SLAP_AT_HIDE,
1790                         offsetof(monitor_info_t, mi_ad_monitorIsShadow) },
1791                 { "( 1.3.6.1.4.1.4203.666.1.55.28 "
1792                         "NAME 'monitorUpdateRef' "
1793                         "DESC 'update referral for shadow databases' "
1794                         "SUP monitoredInfo "
1795                         "SINGLE-VALUE "
1796                         "USAGE dSAOperation )", SLAP_AT_HIDE,
1797                         offsetof(monitor_info_t, mi_ad_monitorUpdateRef) },
1798                 { "( 1.3.6.1.4.1.4203.666.1.55.29 "
1799                         "NAME 'monitorRuntimeConfig' "
1800                         "DESC 'TRUE if component allows runtime configuration' "
1801                         "EQUALITY booleanMatch "
1802                         "SYNTAX 1.3.6.1.4.1.1466.115.121.1.7 "
1803                         "SINGLE-VALUE "
1804                         "USAGE dSAOperation )", SLAP_AT_HIDE,
1805                         offsetof(monitor_info_t, mi_ad_monitorRuntimeConfig) },
1806                 { NULL, 0, -1 }
1807         };
1808
1809         static struct {
1810                 char                    *name;
1811                 char                    *oid;
1812         }               s_oid[] = {
1813                 { "olmAttributes",                      "1.3.6.1.4.1.4203.666.1.55" },
1814                 { "olmSubSystemAttributes",             "olmAttributes:0" },
1815                 { "olmGenericAttributes",               "olmSubSystemAttributes:0" },
1816                 { "olmDatabaseAttributes",              "olmSubSystemAttributes:1" },
1817
1818                 /* for example, back-bdb specific attrs
1819                  * are in "olmDatabaseAttributes:1"
1820                  *
1821                  * NOTE: developers, please record here OID assignments
1822                  * for other modules */
1823
1824                 { "olmObjectClasses",                   "1.3.6.1.4.1.4203.666.3.16" },
1825                 { "olmSubSystemObjectClasses",          "olmObjectClasses:0" },
1826                 { "olmGenericObjectClasses",            "olmSubSystemObjectClasses:0" },
1827                 { "olmDatabaseObjectClasses",           "olmSubSystemObjectClasses:1" },
1828
1829                 /* for example, back-bdb specific objectClasses
1830                  * are in "olmDatabaseObjectClasses:1"
1831                  *
1832                  * NOTE: developers, please record here OID assignments
1833                  * for other modules */
1834
1835                 { NULL }
1836         };
1837
1838         int                     i, rc;
1839         monitor_info_t          *mi = &monitor_info;
1840         ConfigArgs c;
1841         char    *argv[ 3 ];
1842
1843         argv[ 0 ] = "monitor";
1844         c.argv = argv;
1845         c.argc = 3;
1846         c.fname = argv[0];
1847
1848         for ( i = 0; s_oid[ i ].name; i++ ) {
1849                 argv[ 1 ] = s_oid[ i ].name;
1850                 argv[ 2 ] = s_oid[ i ].oid;
1851
1852                 if ( parse_oidm( &c, 0, NULL ) != 0 ) {
1853                         Debug( LDAP_DEBUG_ANY,
1854                                 "monitor_back_initialize: unable to add "
1855                                 "objectIdentifier \"%s=%s\"\n",
1856                                 s_oid[ i ].name, s_oid[ i ].oid, 0 );
1857                         return 1;
1858                 }
1859         }
1860
1861         /* schema integration */
1862         for ( i = 0; mat[ i ].schema; i++ ) {
1863                 int                     code;
1864                 AttributeDescription **ad =
1865                         ((AttributeDescription **)&(((char *)mi)[ mat[ i ].offset ]));
1866
1867                 *ad = NULL;
1868                 code = register_at( mat[ i ].schema, ad, 0 );
1869
1870                 if ( code ) {
1871                         Debug( LDAP_DEBUG_ANY,
1872                                 "monitor_back_db_init: register_at failed\n", 0, 0, 0 );
1873                         return -1;
1874                 }
1875                 (*ad)->ad_type->sat_flags |= mat[ i ].flags;
1876         }
1877
1878         for ( i = 0; moc[ i ].schema; i++ ) {
1879                 int                     code;
1880                 ObjectClass             **Oc =
1881                         ((ObjectClass **)&(((char *)mi)[ moc[ i ].offset ]));
1882
1883                 code = register_oc( moc[ i ].schema, Oc, 0 );
1884                 if ( code ) {
1885                         Debug( LDAP_DEBUG_ANY,
1886                                 "monitor_back_db_init: register_oc failed\n", 0, 0, 0 );
1887                         return -1;
1888                 }
1889                 (*Oc)->soc_flags |= moc[ i ].flags;
1890         }
1891
1892         bi->bi_controls = controls;
1893
1894         bi->bi_init = 0;
1895         bi->bi_open = 0;
1896         bi->bi_config = monitor_back_config;
1897         bi->bi_close = 0;
1898         bi->bi_destroy = 0;
1899
1900         bi->bi_db_init = monitor_back_db_init;
1901 #if 0
1902         bi->bi_db_config = monitor_back_db_config;
1903 #endif
1904         bi->bi_db_open = monitor_back_db_open;
1905         bi->bi_db_close = 0;
1906         bi->bi_db_destroy = monitor_back_db_destroy;
1907
1908         bi->bi_op_bind = monitor_back_bind;
1909         bi->bi_op_unbind = 0;
1910         bi->bi_op_search = monitor_back_search;
1911         bi->bi_op_compare = monitor_back_compare;
1912         bi->bi_op_modify = monitor_back_modify;
1913         bi->bi_op_modrdn = 0;
1914         bi->bi_op_add = 0;
1915         bi->bi_op_delete = 0;
1916         bi->bi_op_abandon = 0;
1917
1918         bi->bi_extended = 0;
1919
1920         bi->bi_entry_release_rw = 0;
1921         bi->bi_chk_referrals = 0;
1922         bi->bi_operational = monitor_back_operational;
1923
1924         /*
1925          * hooks for slap tools
1926          */
1927         bi->bi_tool_entry_open = 0;
1928         bi->bi_tool_entry_close = 0;
1929         bi->bi_tool_entry_first = 0;
1930         bi->bi_tool_entry_next = 0;
1931         bi->bi_tool_entry_get = 0;
1932         bi->bi_tool_entry_put = 0;
1933         bi->bi_tool_entry_reindex = 0;
1934         bi->bi_tool_sync = 0;
1935         bi->bi_tool_dn2id_get = 0;
1936         bi->bi_tool_id2entry_get = 0;
1937         bi->bi_tool_entry_modify = 0;
1938
1939         bi->bi_connection_init = 0;
1940         bi->bi_connection_destroy = 0;
1941
1942         bi->bi_extra = (void *)&monitor_extra;
1943
1944         /*
1945          * configuration objectClasses (fake)
1946          */
1947         bi->bi_cf_ocs = monitorocs;
1948
1949         rc = config_register_schema( monitorcfg, monitorocs );
1950         if ( rc ) {
1951                 return rc;
1952         }
1953
1954         return 0;
1955 }
1956
1957 int
1958 monitor_back_db_init(
1959         BackendDB       *be )
1960 {
1961         int                     rc;
1962         struct berval           dn = BER_BVC( SLAPD_MONITOR_DN ),
1963                                 pdn,
1964                                 ndn;
1965         BackendDB               *be2;
1966
1967         monitor_subsys_t        *ms;
1968
1969         /*
1970          * register subsys
1971          */
1972         for ( ms = known_monitor_subsys; ms->mss_name != NULL; ms++ ) {
1973                 if ( monitor_back_register_subsys( ms ) ) {
1974                         return -1;
1975                 }
1976         }
1977
1978         /*
1979          * database monitor can be defined once only
1980          */
1981         if ( be_monitor != NULL ) {
1982                 Debug( LDAP_DEBUG_ANY,
1983                         "only one monitor database is allowed\n", 0, 0, 0 );
1984                 return( -1 );
1985         }
1986         be_monitor = be;
1987
1988         /* indicate system schema supported */
1989         SLAP_BFLAGS(be) |= SLAP_BFLAG_MONITOR;
1990
1991         rc = dnPrettyNormal( NULL, &dn, &pdn, &ndn, NULL );
1992         if( rc != LDAP_SUCCESS ) {
1993                 Debug( LDAP_DEBUG_ANY,
1994                         "unable to normalize/pretty monitor DN \"%s\" (%d)\n",
1995                         dn.bv_val, rc, 0 );
1996                 return -1;
1997         }
1998
1999         ber_bvarray_add( &be->be_suffix, &pdn );
2000         ber_bvarray_add( &be->be_nsuffix, &ndn );
2001
2002         /* NOTE: only one monitor database is allowed,
2003          * so we use static storage */
2004         ldap_pvt_thread_mutex_init( &monitor_info.mi_cache_mutex );
2005
2006         be->be_private = &monitor_info;
2007
2008         be2 = select_backend( &ndn, 0, 0 );
2009         if ( be2 != be ) {
2010                 char    *type = be2->bd_info->bi_type;
2011
2012                 if ( overlay_is_over( be2 ) ) {
2013                         slap_overinfo   *oi = (slap_overinfo *)be2->bd_info->bi_private;
2014                         type = oi->oi_orig->bi_type;
2015                 }
2016
2017                 Debug( LDAP_DEBUG_ANY,
2018                         "\"monitor\" database serving namingContext \"%s\" "
2019                         "is hidden by \"%s\" database serving namingContext \"%s\".\n",
2020                         pdn.bv_val, type, be2->be_nsuffix[ 0 ].bv_val );
2021                 return -1;
2022         }
2023
2024         return 0;
2025 }
2026
2027 int
2028 monitor_back_db_open(
2029         BackendDB       *be )
2030 {
2031         monitor_info_t          *mi = (monitor_info_t *)be->be_private;
2032         struct monitor_subsys_t **ms;
2033         Entry                   *e, **ep, *root;
2034         monitor_entry_t         *mp;
2035         int                     i;
2036         struct berval           bv, rdn = BER_BVC(SLAPD_MONITOR_DN);
2037         struct tm               *tms;
2038 #ifdef HAVE_GMTIME_R
2039         struct tm               tm_buf;
2040 #endif
2041         static char             tmbuf[ LDAP_LUTIL_GENTIME_BUFSIZE ];
2042         struct berval   desc[] = {
2043                 BER_BVC("This subtree contains monitoring/managing objects."),
2044                 BER_BVC("This object contains information about this server."),
2045                 BER_BVC("Most of the information is held in operational"
2046                 " attributes, which must be explicitly requested."),
2047                 BER_BVNULL };
2048
2049         assert( be_monitor != NULL );
2050         if ( be != be_monitor ) {
2051                 be_monitor = be;
2052         }
2053
2054         /*
2055          * Start
2056          */
2057 #ifndef HAVE_GMTIME_R
2058         ldap_pvt_thread_mutex_lock( &gmtime_mutex );
2059 #endif
2060 #ifdef HACK_LOCAL_TIME
2061 # ifdef HAVE_LOCALTIME_R
2062         tms = localtime_r( &starttime, &tm_buf );
2063 # else
2064         tms = localtime( &starttime );
2065 # endif /* HAVE_LOCALTIME_R */
2066         lutil_localtime( tmbuf, sizeof(tmbuf), tms, -timezone );
2067 #else /* !HACK_LOCAL_TIME */
2068 # ifdef HAVE_GMTIME_R
2069         tms = gmtime_r( &starttime, &tm_buf );
2070 # else
2071         tms = gmtime( &starttime );
2072 # endif /* HAVE_GMTIME_R */
2073         lutil_gentime( tmbuf, sizeof(tmbuf), tms );
2074 #endif /* !HACK_LOCAL_TIME */
2075 #ifndef HAVE_GMTIME_R
2076         ldap_pvt_thread_mutex_unlock( &gmtime_mutex );
2077 #endif
2078
2079         mi->mi_startTime.bv_val = tmbuf;
2080         mi->mi_startTime.bv_len = strlen( tmbuf );
2081
2082         if ( BER_BVISEMPTY( &be->be_rootdn ) ) {
2083                 BER_BVSTR( &mi->mi_creatorsName, SLAPD_ANONYMOUS );
2084                 BER_BVSTR( &mi->mi_ncreatorsName, SLAPD_ANONYMOUS );
2085         } else {
2086                 mi->mi_creatorsName = be->be_rootdn;
2087                 mi->mi_ncreatorsName = be->be_rootndn;
2088         }
2089
2090         /*
2091          * creates the "cn=Monitor" entry
2092          */
2093         e = monitor_entry_stub( NULL, NULL, &rdn, mi->mi_oc_monitorServer, mi,
2094                 NULL, NULL );
2095
2096         if ( e == NULL) {
2097                 Debug( LDAP_DEBUG_ANY,
2098                         "unable to create \"%s\" entry\n",
2099                         SLAPD_MONITOR_DN, 0, 0 );
2100                 return( -1 );
2101         }
2102
2103         attr_merge_normalize( e, slap_schema.si_ad_description, desc, NULL );
2104
2105         bv.bv_val = strchr( (char *) Versionstr, '$' );
2106         if ( bv.bv_val != NULL ) {
2107                 char    *end;
2108
2109                 bv.bv_val++;
2110                 for ( ; bv.bv_val[ 0 ] == ' '; bv.bv_val++ )
2111                         ;
2112
2113                 end = strchr( bv.bv_val, '$' );
2114                 if ( end != NULL ) {
2115                         end--;
2116
2117                         for ( ; end > bv.bv_val && end[ 0 ] == ' '; end-- )
2118                                 ;
2119
2120                         end++;
2121
2122                         bv.bv_len = end - bv.bv_val;
2123
2124                 } else {
2125                         bv.bv_len = strlen( bv.bv_val );
2126                 }
2127
2128                 if ( attr_merge_normalize_one( e, mi->mi_ad_monitoredInfo,
2129                                         &bv, NULL ) ) {
2130                         Debug( LDAP_DEBUG_ANY,
2131                                 "unable to add monitoredInfo to \"%s\" entry\n",
2132                                 SLAPD_MONITOR_DN, 0, 0 );
2133                         return( -1 );
2134                 }
2135         }
2136
2137         mp = monitor_entrypriv_create();
2138         if ( mp == NULL ) {
2139                 return -1;
2140         }
2141         e->e_private = ( void * )mp;
2142         ep = &mp->mp_children;
2143
2144         if ( monitor_cache_add( mi, e ) ) {
2145                 Debug( LDAP_DEBUG_ANY,
2146                         "unable to add entry \"%s\" to cache\n",
2147                         SLAPD_MONITOR_DN, 0, 0 );
2148                 return -1;
2149         }
2150         root = e;
2151
2152         /*
2153          * Create all the subsystem specific entries
2154          */
2155         for ( i = 0; monitor_subsys[ i ] != NULL; i++ ) {
2156                 int             len = strlen( monitor_subsys[ i ]->mss_name );
2157                 struct berval   dn;
2158                 int             rc;
2159
2160                 dn.bv_len = len + sizeof( "cn=" ) - 1;
2161                 dn.bv_val = ch_calloc( sizeof( char ), dn.bv_len + 1 );
2162                 strcpy( dn.bv_val, "cn=" );
2163                 strcat( dn.bv_val, monitor_subsys[ i ]->mss_name );
2164                 rc = dnPretty( NULL, &dn, &monitor_subsys[ i ]->mss_rdn, NULL );
2165                 free( dn.bv_val );
2166                 if ( rc != LDAP_SUCCESS ) {
2167                         Debug( LDAP_DEBUG_ANY,
2168                                 "monitor RDN \"%s\" is invalid\n",
2169                                 dn.bv_val, 0, 0 );
2170                         return( -1 );
2171                 }
2172
2173                 e = monitor_entry_stub( &root->e_name, &root->e_nname,
2174                         &monitor_subsys[ i ]->mss_rdn, mi->mi_oc_monitorContainer, mi,
2175                         NULL, NULL );
2176
2177                 if ( e == NULL) {
2178                         Debug( LDAP_DEBUG_ANY,
2179                                 "unable to create \"%s\" entry\n",
2180                                 monitor_subsys[ i ]->mss_dn.bv_val, 0, 0 );
2181                         return( -1 );
2182                 }
2183                 monitor_subsys[i]->mss_dn = e->e_name;
2184                 monitor_subsys[i]->mss_ndn = e->e_nname;
2185
2186                 if ( !BER_BVISNULL( &monitor_subsys[ i ]->mss_desc[ 0 ] ) ) {
2187                         attr_merge_normalize( e, slap_schema.si_ad_description,
2188                                         monitor_subsys[ i ]->mss_desc, NULL );
2189                 }
2190
2191                 mp = monitor_entrypriv_create();
2192                 if ( mp == NULL ) {
2193                         return -1;
2194                 }
2195                 e->e_private = ( void * )mp;
2196                 mp->mp_info = monitor_subsys[ i ];
2197                 mp->mp_flags = monitor_subsys[ i ]->mss_flags;
2198
2199                 if ( monitor_cache_add( mi, e ) ) {
2200                         Debug( LDAP_DEBUG_ANY,
2201                                 "unable to add entry \"%s\" to cache\n",
2202                                 monitor_subsys[ i ]->mss_dn.bv_val, 0, 0 );
2203                         return -1;
2204                 }
2205
2206                 *ep = e;
2207                 ep = &mp->mp_next;
2208         }
2209
2210         assert( be != NULL );
2211
2212         be->be_private = mi;
2213
2214         /*
2215          * opens the monitor backend subsystems
2216          */
2217         for ( ms = monitor_subsys; ms[ 0 ] != NULL; ms++ ) {
2218                 if ( ms[ 0 ]->mss_open && ( *ms[ 0 ]->mss_open )( be, ms[ 0 ] ) )
2219                 {
2220                         return( -1 );
2221                 }
2222                 ms[ 0 ]->mss_flags |= MONITOR_F_OPENED;
2223         }
2224
2225         monitor_subsys_opened = 1;
2226
2227         if ( mi->mi_entry_limbo ) {
2228                 entry_limbo_t   *el = (entry_limbo_t *)mi->mi_entry_limbo;
2229
2230                 for ( ; el; ) {
2231                         entry_limbo_t   *tmp;
2232                         int             rc;
2233
2234                         switch ( el->el_type ) {
2235                         case LIMBO_ENTRY:
2236                                 rc = monitor_back_register_entry(
2237                                                 el->el_e,
2238                                                 el->el_cb,
2239                                                 el->el_mss,
2240                                                 el->el_flags );
2241                                 break;
2242
2243                         case LIMBO_ENTRY_PARENT:
2244                                 rc = monitor_back_register_entry_parent(
2245                                                 el->el_e,
2246                                                 el->el_cb,
2247                                                 el->el_mss,
2248                                                 el->el_flags,
2249                                                 &el->el_nbase,
2250                                                 el->el_scope,
2251                                                 &el->el_filter );
2252                                 break;
2253
2254
2255                         case LIMBO_ATTRS:
2256                                 rc = monitor_back_register_entry_attrs(
2257                                                 &el->el_ndn,
2258                                                 el->el_a,
2259                                                 el->el_cb,
2260                                                 &el->el_nbase,
2261                                                 el->el_scope,
2262                                                 &el->el_filter );
2263                                 break;
2264
2265                         case LIMBO_CB:
2266                                 rc = monitor_back_register_entry_callback(
2267                                                 &el->el_ndn,
2268                                                 el->el_cb,
2269                                                 &el->el_nbase,
2270                                                 el->el_scope,
2271                                                 &el->el_filter );
2272                                 break;
2273
2274                         default:
2275                                 assert( 0 );
2276                         }
2277
2278                         if ( el->el_e ) {
2279                                 entry_free( el->el_e );
2280                         }
2281                         if ( el->el_a ) {
2282                                 attrs_free( el->el_a );
2283                         }
2284                         if ( !BER_BVISNULL( &el->el_ndn ) ) {
2285                                 ber_memfree( el->el_ndn.bv_val );
2286                         }
2287                         if ( !BER_BVISNULL( &el->el_nbase ) ) {
2288                                 ber_memfree( el->el_nbase.bv_val );
2289                         }
2290                         if ( !BER_BVISNULL( &el->el_filter ) ) {
2291                                 ber_memfree( el->el_filter.bv_val );
2292                         }
2293                         if ( el->el_cb && rc != 0 ) {
2294                                 if ( el->el_cb->mc_dispose ) {
2295                                         el->el_cb->mc_dispose( &el->el_cb->mc_private );
2296                                 }
2297                                 ch_free( el->el_cb );
2298                         }
2299
2300                         tmp = el;
2301                         el = el->el_next;
2302                         ch_free( tmp );
2303                 }
2304
2305                 mi->mi_entry_limbo = NULL;
2306         }
2307
2308         return( 0 );
2309 }
2310
2311 int
2312 monitor_back_config(
2313         BackendInfo     *bi,
2314         const char      *fname,
2315         int             lineno,
2316         int             argc,
2317         char            **argv )
2318 {
2319         /*
2320          * eventually, will hold backend specific configuration parameters
2321          */
2322         return SLAP_CONF_UNKNOWN;
2323 }
2324
2325 #if 0
2326 int
2327 monitor_back_db_config(
2328         Backend     *be,
2329         const char  *fname,
2330         int         lineno,
2331         int         argc,
2332         char        **argv )
2333 {
2334         monitor_info_t  *mi = ( monitor_info_t * )be->be_private;
2335
2336         /*
2337          * eventually, will hold database specific configuration parameters
2338          */
2339         return SLAP_CONF_UNKNOWN;
2340 }
2341 #endif
2342
2343 int
2344 monitor_back_db_destroy(
2345         BackendDB       *be )
2346 {
2347         monitor_info_t  *mi = ( monitor_info_t * )be->be_private;
2348
2349         if ( mi == NULL ) {
2350                 return -1;
2351         }
2352
2353         /*
2354          * FIXME: destroys all the data
2355          */
2356         /* NOTE: mi points to static storage; don't free it */
2357
2358         (void)monitor_cache_destroy( mi );
2359
2360         if ( monitor_subsys ) {
2361                 int     i;
2362
2363                 for ( i = 0; monitor_subsys[ i ] != NULL; i++ ) {
2364                         if ( monitor_subsys[ i ]->mss_destroy ) {
2365                                 monitor_subsys[ i ]->mss_destroy( be, monitor_subsys[ i ] );
2366                         }
2367
2368                         if ( !BER_BVISNULL( &monitor_subsys[ i ]->mss_rdn ) ) {
2369                                 ch_free( monitor_subsys[ i ]->mss_rdn.bv_val );
2370                         }
2371                 }
2372
2373                 ch_free( monitor_subsys );
2374         }
2375
2376         ldap_pvt_thread_mutex_destroy( &monitor_info.mi_cache_mutex );
2377
2378         be->be_private = NULL;
2379
2380         return 0;
2381 }
2382
2383 #if SLAPD_MONITOR == SLAPD_MOD_DYNAMIC
2384
2385 /* conditionally define the init_module() function */
2386 SLAP_BACKEND_INIT_MODULE( monitor )
2387
2388 #endif /* SLAPD_MONITOR == SLAPD_MOD_DYNAMIC */
2389