git.sur5r.net Git - openldap/blob - servers/slapd/back-bdb/add.c

   1 /* add.c - ldap BerkeleyDB back-end add routine */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
   5  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   6  */
   7
   8 #include "portable.h"
   9
  10 #include <stdio.h>
  11 #include <ac/string.h>
  12
  13 #include "back-bdb.h"
  14 #include "external.h"
  15
  16 int
  17 bdb_add(
  18         BackendDB       *be,
  19         Connection      *conn,
  20         Operation       *op,
  21         Entry   *e )
  22 {
  23         struct bdb_info *bdb = (struct bdb_info *) be->be_private;
  24         struct berval   pdn;
  25         Entry           *p = NULL;
  26         int             rc;
  27         const char      *text;
  28         char textbuf[SLAP_TEXT_BUFLEN];
  29         size_t textlen = sizeof textbuf;
  30         AttributeDescription *children = slap_schema.si_ad_children;
  31         DB_TXN          *ltid = NULL;
  32         struct bdb_op_info opinfo;
  33 #ifdef BDB_SUBENTRIES
  34         int subentry;
  35 #endif
  36         u_int32_t       locker;
  37         DB_LOCK         lock;
  38 #if 0
  39         u_int32_t       lockid;
  40         DB_LOCK         lock;
  41 #endif
  42         int             noop = 0;
  43
  44 #ifdef NEW_LOGGING
  45         LDAP_LOG ( OPERATION, ARGS, "==> bdb_add: %s\n", e->e_dn, 0, 0 );
  46 #else
  47         Debug(LDAP_DEBUG_ARGS, "==> bdb_add: %s\n", e->e_dn, 0, 0);
  48 #endif
  49
  50         /* check entry's schema */
  51         rc = entry_schema_check( be, e, NULL, &text, textbuf, textlen );
  52         if ( rc != LDAP_SUCCESS ) {
  53 #ifdef NEW_LOGGING
  54         LDAP_LOG ( OPERATION, ERR,
  55                 "bdb_add: entry failed schema check: %s (%d)\n", text, rc, 0 );
  56 #else
  57                 Debug( LDAP_DEBUG_TRACE,
  58                         "bdb_add: entry failed schema check: %s (%d)\n",
  59                         text, rc, 0 );
  60 #endif
  61                 goto return_results;
  62         }
  63
  64 #ifdef BDB_SUBENTRIES
  65         subentry = is_entry_subentry( e );
  66 #endif
  67
  68         /*
  69          * acquire an ID outside of the operation transaction
  70          * to avoid serializing adds.
  71          */
  72         rc = bdb_next_id( be, NULL, &e->e_id );
  73         if( rc != 0 ) {
  74 #ifdef NEW_LOGGING
  75                 LDAP_LOG ( OPERATION, ERR,
  76                         "bdb_add: next_id failed (%d)\n", rc, 0, 0 );
  77 #else
  78                 Debug( LDAP_DEBUG_TRACE,
  79                         "bdb_add: next_id failed (%d)\n",
  80                         rc, 0, 0 );
  81 #endif
  82                 rc = LDAP_OTHER;
  83                 text = "internal error";
  84                 goto return_results;
  85         }
  86
  87         if( 0 ) {
  88 retry:  /* transaction retry */
  89                 rc = TXN_ABORT( ltid );
  90                 ltid = NULL;
  91                 op->o_private = NULL;
  92                 if( rc != 0 ) {
  93                         rc = LDAP_OTHER;
  94                         text = "internal error";
  95                         goto return_results;
  96                 }
  97                 ldap_pvt_thread_yield();
  98         }
  99
 100         /* begin transaction */
 101         rc = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid,
 102                 bdb->bi_db_opflags );
 103         text = NULL;
 104         if( rc != 0 ) {
 105 #ifdef NEW_LOGGING
 106                 LDAP_LOG ( OPERATION, ERR,
 107                         "bdb_add: txn_begin failed: %s (%d)\n", db_strerror(rc), rc, 0 );
 108 #else
 109                 Debug( LDAP_DEBUG_TRACE,
 110                         "bdb_add: txn_begin failed: %s (%d)\n",
 111                         db_strerror(rc), rc, 0 );
 112 #endif
 113                 rc = LDAP_OTHER;
 114                 text = "internal error";
 115                 goto return_results;
 116         }
 117
 118         locker = TXN_ID ( ltid );
 119 #if 0
 120         lockid = TXN_ID( ltid );
 121 #endif
 122
 123         opinfo.boi_bdb = be;
 124         opinfo.boi_txn = ltid;
 125         opinfo.boi_err = 0;
 126         op->o_private = &opinfo;
 127
 128         /*
 129          * Get the parent dn and see if the corresponding entry exists.
 130          * If the parent does not exist, only allow the "root" user to
 131          * add the entry.
 132          */
 133         if ( be_issuffix( be, &e->e_nname ) ) {
 134                 pdn = slap_empty_bv;
 135         } else {
 136                 dnParent( &e->e_nname, &pdn );
 137         }
 138
 139         if( pdn.bv_len != 0 ) {
 140                 Entry *matched = NULL;
 141
 142 #if 0
 143                 if ( ltid ) {
 144                         DBT obj;
 145                         obj.data = pdn.bv_val-1;
 146                         obj.size = pdn.bv_len+1;
 147                         rc = LOCK_GET( bdb->bi_dbenv, lockid, 0, &obj,
 148                                 DB_LOCK_WRITE, &lock);
 149                 }
 150 #endif
 151
 152                 /* get parent */
 153                 rc = bdb_dn2entry_r( be, ltid, &pdn, &p, &matched, 0, locker, &lock );
 154
 155                 switch( rc ) {
 156                 case 0:
 157                 case DB_NOTFOUND:
 158                         break;
 159                 case DB_LOCK_DEADLOCK:
 160                 case DB_LOCK_NOTGRANTED:
 161                         goto retry;
 162                 case LDAP_BUSY:
 163                         text = "ldap server busy";
 164                         goto return_results;
 165                 default:
 166                         rc = LDAP_OTHER;
 167                         text = "internal error";
 168                         goto return_results;
 169                 }
 170
 171                 if ( p == NULL ) {
 172                         char *matched_dn = NULL;
 173                         BerVarray refs;
 174
 175                         if ( matched != NULL ) {
 176                                 matched_dn = ch_strdup( matched->e_dn );
 177                                 refs = is_entry_referral( matched )
 178                                         ? get_entry_referrals( be, conn, op, matched )
 179                                         : NULL;
 180                                 bdb_unlocked_cache_return_entry_r( &bdb->bi_cache, matched );
 181                                 matched = NULL;
 182
 183                         } else {
 184                                 refs = referral_rewrite( default_referral,
 185                                         NULL, &e->e_name, LDAP_SCOPE_DEFAULT );
 186                         }
 187
 188 #ifdef NEW_LOGGING
 189                         LDAP_LOG ( OPERATION, DETAIL1,
 190                                 "bdb_add: parent does not exist\n", 0, 0, 0 );
 191 #else
 192                         Debug( LDAP_DEBUG_TRACE, "bdb_add: parent does not exist\n",
 193                                 0, 0, 0 );
 194 #endif
 195
 196                         send_ldap_result( conn, op, rc = LDAP_REFERRAL,
 197                                 matched_dn, NULL, refs, NULL );
 198
 199                         ber_bvarray_free( refs );
 200                         ch_free( matched_dn );
 201
 202                         goto done;
 203                 }
 204
 205                 rc = access_allowed( be, conn, op, p,
 206                         children, NULL, ACL_WRITE, NULL );
 207
 208                 switch( opinfo.boi_err ) {
 209                 case DB_LOCK_DEADLOCK:
 210                 case DB_LOCK_NOTGRANTED:
 211                         /* free parent and reader lock */
 212                         bdb_unlocked_cache_return_entry_r( &bdb->bi_cache, p );
 213                         p = NULL;
 214                         goto retry;
 215                 }
 216
 217                 if ( ! rc ) {
 218 #ifdef NEW_LOGGING
 219                         LDAP_LOG ( OPERATION, DETAIL1,
 220                                 "bdb_add: no write access to parent\n", 0, 0, 0 );
 221 #else
 222                         Debug( LDAP_DEBUG_TRACE, "bdb_add: no write access to parent\n",
 223                                 0, 0, 0 );
 224 #endif
 225                         rc = LDAP_INSUFFICIENT_ACCESS;
 226                         text = "no write access to parent";
 227                         goto return_results;;
 228                 }
 229
 230 #ifdef BDB_SUBENTRIES
 231                 if ( is_entry_subentry( p ) ) {
 232                         /* parent is a subentry, don't allow add */
 233 #ifdef NEW_LOGGING
 234                         LDAP_LOG ( OPERATION, DETAIL1,
 235                                 "bdb_add: parent is subentry\n", 0, 0, 0 );
 236 #else
 237                         Debug( LDAP_DEBUG_TRACE, "bdb_add: parent is subentry\n",
 238                                 0, 0, 0 );
 239 #endif
 240                         rc = LDAP_OBJECT_CLASS_VIOLATION;
 241                         text = "parent is a subentry";
 242                         goto return_results;;
 243                 }
 244 #endif
 245 #ifdef BDB_ALIASES
 246                 if ( is_entry_alias( p ) ) {
 247                         /* parent is an alias, don't allow add */
 248 #ifdef NEW_LOGGING
 249                         LDAP_LOG ( OPERATION, DETAIL1,
 250                                 "bdb_add: parent is alias\n", 0, 0, 0 );
 251 #else
 252                         Debug( LDAP_DEBUG_TRACE, "bdb_add: parent is alias\n",
 253                                 0, 0, 0 );
 254 #endif
 255                         rc = LDAP_ALIAS_PROBLEM;
 256                         text = "parent is an alias";
 257                         goto return_results;;
 258                 }
 259 #endif
 260
 261                 if ( is_entry_referral( p ) ) {
 262                         /* parent is a referral, don't allow add */
 263                         char *matched_dn = p->e_dn;
 264                         BerVarray refs = get_entry_referrals( be, conn, op, p );
 265
 266 #ifdef NEW_LOGGING
 267                         LDAP_LOG ( OPERATION, DETAIL1,
 268                                 "bdb_add: parent is referral\n", 0, 0, 0 );
 269 #else
 270                         Debug( LDAP_DEBUG_TRACE, "bdb_add: parent is referral\n",
 271                                 0, 0, 0 );
 272 #endif
 273
 274                         send_ldap_result( conn, op, rc = LDAP_REFERRAL,
 275                                 matched_dn, NULL, refs, NULL );
 276
 277                         ber_bvarray_free( refs );
 278                         bdb_unlocked_cache_return_entry_r( &bdb->bi_cache, p );
 279                         p = NULL;
 280                         goto done;
 281                 }
 282
 283 #ifdef BDB_SUBENTRIES
 284                 if ( subentry ) {
 285                         /* FIXME: */
 286                         /* parent must be an administrative point of the required kind */
 287                 }
 288 #endif
 289
 290                 /* free parent and reader lock */
 291                 bdb_unlocked_cache_return_entry_r( &bdb->bi_cache, p );
 292                 p = NULL;
 293
 294         } else {
 295                 /*
 296                  * no parent!
 297                  *      must be adding entry at suffix or with parent ""
 298                  */
 299                 if ( !be_isroot( be, &op->o_ndn )) {
 300                         if ( be_issuffix( be, (struct berval *)&slap_empty_bv )
 301                                 || be_isupdate( be, &op->o_ndn ) ) {
 302                                 p = (Entry *)&slap_entry_root;
 303
 304                                 /* check parent for "children" acl */
 305                                 rc = access_allowed( be, conn, op, p,
 306                                         children, NULL, ACL_WRITE, NULL );
 307                                 p = NULL;
 308
 309                                 switch( opinfo.boi_err ) {
 310                                 case DB_LOCK_DEADLOCK:
 311                                 case DB_LOCK_NOTGRANTED:
 312                                         goto retry;
 313                                 }
 314
 315                                 if ( ! rc ) {
 316 #ifdef NEW_LOGGING
 317                                         LDAP_LOG ( OPERATION, DETAIL1,
 318                                                 "bdb_add: no write access to parent\n", 0, 0, 0 );
 319 #else
 320                                         Debug( LDAP_DEBUG_TRACE,
 321                                                 "bdb_add: no write access to parent\n",
 322                                                 0, 0, 0 );
 323 #endif
 324                                         rc = LDAP_INSUFFICIENT_ACCESS;
 325                                         text = "no write access to parent";
 326                                         goto return_results;;
 327                                 }
 328
 329                         } else {
 330 #ifdef NEW_LOGGING
 331                                 LDAP_LOG ( OPERATION, DETAIL1, "bdb_add: %s denied\n",
 332                                         pdn.bv_len == 0 ? "suffix" : "entry at root", 0, 0 );
 333 #else
 334                                 Debug( LDAP_DEBUG_TRACE, "bdb_add: %s denied\n",
 335                                         pdn.bv_len == 0 ? "suffix" : "entry at root",
 336                                         0, 0 );
 337 #endif
 338                                 rc = LDAP_INSUFFICIENT_ACCESS;
 339                                 goto return_results;
 340                         }
 341                 }
 342
 343 #ifdef BDB_SUBENTRIES
 344                 if( subentry ) {
 345 #ifdef NEW_LOGGING
 346                         LDAP_LOG ( OPERATION, DETAIL1,
 347                                 "bdb_add: no parent, cannot add subentry\n", 0, 0, 0 );
 348 #else
 349                         Debug( LDAP_DEBUG_TRACE,
 350                                 "bdb_add: no parent, cannot add subentry\n",
 351                                 0, 0, 0 );
 352 #endif
 353                         rc = LDAP_INSUFFICIENT_ACCESS;
 354                         text = "no parent, cannot add subentry";
 355                         goto return_results;;
 356                 }
 357 #endif
 358 #if 0
 359                 if ( ltid ) {
 360                         DBT obj;
 361                         obj.data = ",";
 362                         obj.size = 1;
 363                         rc = LOCK_GET( bdb->bi_dbenv, lockid, 0, &obj,
 364                                 DB_LOCK_WRITE, &lock);
 365                 }
 366 #endif
 367         }
 368
 369         /* dn2id index */
 370         rc = bdb_dn2id_add( be, ltid, &pdn, e );
 371         if ( rc != 0 ) {
 372 #ifdef NEW_LOGGING
 373                 LDAP_LOG ( OPERATION, ERR,
 374                         "bdb_add: dn2id_add failed: %s (%d)\n", db_strerror(rc), rc, 0 );
 375 #else
 376                 Debug( LDAP_DEBUG_TRACE, "bdb_add: dn2id_add failed: %s (%d)\n",
 377                         db_strerror(rc), rc, 0 );
 378 #endif
 379
 380                 switch( rc ) {
 381                 case DB_LOCK_DEADLOCK:
 382                 case DB_LOCK_NOTGRANTED:
 383                         goto retry;
 384                 case DB_KEYEXIST:
 385                         rc = LDAP_ALREADY_EXISTS;
 386                         break;
 387                 default:
 388                         rc = LDAP_OTHER;
 389                 }
 390                 goto return_results;
 391         }
 392
 393         /* id2entry index */
 394         rc = bdb_id2entry_add( be, ltid, e );
 395         if ( rc != 0 ) {
 396 #ifdef NEW_LOGGING
 397                 LDAP_LOG ( OPERATION, ERR, "bdb_add: id2entry_add failed\n", 0, 0, 0 );
 398 #else
 399                 Debug( LDAP_DEBUG_TRACE, "bdb_add: id2entry_add failed\n",
 400                         0, 0, 0 );
 401 #endif
 402                 switch( rc ) {
 403                 case DB_LOCK_DEADLOCK:
 404                 case DB_LOCK_NOTGRANTED:
 405                         goto retry;
 406                 default:
 407                         rc = LDAP_OTHER;
 408                 }
 409                 text = "entry store failed";
 410                 goto return_results;
 411         }
 412
 413         /* attribute indexes */
 414         rc = bdb_index_entry_add( be, ltid, e, e->e_attrs );
 415         if ( rc != LDAP_SUCCESS ) {
 416 #ifdef NEW_LOGGING
 417                 LDAP_LOG ( OPERATION, ERR,
 418                         "bdb_add: index_entry_add failed\n", 0, 0, 0 );
 419 #else
 420                 Debug( LDAP_DEBUG_TRACE, "bdb_add: index_entry_add failed\n",
 421                         0, 0, 0 );
 422 #endif
 423                 switch( rc ) {
 424                 case DB_LOCK_DEADLOCK:
 425                 case DB_LOCK_NOTGRANTED:
 426                         goto retry;
 427                 default:
 428                         rc = LDAP_OTHER;
 429                 }
 430                 text = "index generation failed";
 431                 goto return_results;
 432         }
 433
 434         if( op->o_noop ) {
 435                 if (( rc=TXN_ABORT( ltid )) != 0 ) {
 436                         text = "txn_abort (no-op) failed";
 437                 } else {
 438                         noop = 1;
 439                         rc = LDAP_SUCCESS;
 440                 }
 441
 442         } else {
 443                 char gid[DB_XIDDATASIZE];
 444
 445                 snprintf( gid, sizeof( gid ), "%s-%08lx-%08lx",
 446                         bdb_uuid.bv_val, (long) op->o_connid, (long) op->o_opid );
 447
 448                 if (( rc=TXN_PREPARE( ltid, gid )) != 0 ) {
 449                         text = "txn_prepare failed";
 450
 451                 } else {
 452                         int ret = bdb_cache_add_entry_rw(bdb->bi_dbenv,
 453                                         &bdb->bi_cache, e, CACHE_WRITE_LOCK,
 454                                         locker, &lock);
 455 #if 0
 456                         if ( bdb_cache_add_entry_rw(&bdb->bi_cache,
 457                                 e, CACHE_WRITE_LOCK) != 0 )
 458 #endif
 459                         switch ( ret ) {
 460                         case 0:
 461                                 break;
 462                         case DB_LOCK_DEADLOCK:
 463                         case DB_LOCK_NOTGRANTED:
 464                                 goto retry;
 465                         default:
 466                                 ret = LDAP_OTHER;
 467                         }
 468
 469                         if ( ret ) {
 470                                 if(( rc=TXN_ABORT( ltid )) != 0 ) {
 471                                         text = "cache add & txn_abort failed";
 472                                 } else {
 473                                         rc = LDAP_OTHER;
 474                                         text = "cache add failed";
 475                                 }
 476                         } else {
 477                                 if(( rc=TXN_COMMIT( ltid, 0 )) != 0 ) {
 478                                         text = "txn_commit failed";
 479                                 } else {
 480                                         rc = LDAP_SUCCESS;
 481                                 }
 482                         }
 483                 }
 484         }
 485
 486         ltid = NULL;
 487         op->o_private = NULL;
 488
 489         if (rc == LDAP_SUCCESS) {
 490 #ifdef NEW_LOGGING
 491                 LDAP_LOG ( OPERATION, RESULTS,
 492                         "bdb_add: added%s id=%08lx dn=\"%s\"\n",
 493                         op->o_noop ? " (no-op)" : "", e->e_id, e->e_dn );
 494 #else
 495                 Debug(LDAP_DEBUG_TRACE, "bdb_add: added%s id=%08lx dn=\"%s\"\n",
 496                         op->o_noop ? " (no-op)" : "", e->e_id, e->e_dn );
 497 #endif
 498                 text = NULL;
 499                 if ( !noop ) {
 500                         bdb_cache_entry_commit( e );
 501                 }
 502         }
 503         else {
 504 #ifdef NEW_LOGGING
 505                 LDAP_LOG ( OPERATION, ERR,
 506                         "bdb_add: %s : %s (%d)\n",  text, db_strerror(rc), rc );
 507 #else
 508                 Debug( LDAP_DEBUG_TRACE, "bdb_add: %s : %s (%d)\n",
 509                         text, db_strerror(rc), rc );
 510 #endif
 511                 rc = LDAP_OTHER;
 512         }
 513
 514 return_results:
 515         send_ldap_result( conn, op, rc,
 516                 NULL, text, NULL, NULL );
 517
 518         if( rc == LDAP_SUCCESS && bdb->bi_txn_cp ) {
 519                 ldap_pvt_thread_yield();
 520                 TXN_CHECKPOINT( bdb->bi_dbenv,
 521                         bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 522         }
 523
 524 done:
 525
 526         if( ltid != NULL ) {
 527                 TXN_ABORT( ltid );
 528                 op->o_private = NULL;
 529         }
 530
 531         return ( ( rc == LDAP_SUCCESS ) ? noop : rc );
 532 }