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

   1 /* add.c - ldap BerkeleyDB back-end add routine */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2000-2009 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16
  17 #include "portable.h"
  18
  19 #include <stdio.h>
  20 #include <ac/string.h>
  21
  22 #include "back-bdb.h"
  23
  24 int
  25 bdb_add(Operation *op, SlapReply *rs )
  26 {
  27         struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
  28         struct berval   pdn;
  29         Entry           *p = NULL, *oe = op->ora_e;
  30         EntryInfo       *ei;
  31         char textbuf[SLAP_TEXT_BUFLEN];
  32         size_t textlen = sizeof textbuf;
  33         AttributeDescription *children = slap_schema.si_ad_children;
  34         AttributeDescription *entry = slap_schema.si_ad_entry;
  35         DB_TXN          *ltid = NULL, *lt2, *rtxn;
  36         ID eid = NOID;
  37         struct bdb_op_info opinfo = {{{ 0 }}};
  38         int subentry;
  39         DB_LOCK         lock;
  40
  41         int             num_retries = 0;
  42         int             success;
  43
  44         LDAPControl **postread_ctrl = NULL;
  45         LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
  46         int num_ctrls = 0;
  47
  48 #ifdef LDAP_X_TXN
  49         int settle = 0;
  50 #endif
  51
  52         Debug(LDAP_DEBUG_ARGS, "==> " LDAP_XSTRING(bdb_add) ": %s\n",
  53                 op->ora_e->e_name.bv_val, 0, 0);
  54
  55 #ifdef LDAP_X_TXN
  56         if( op->o_txnSpec ) {
  57                 /* acquire connection lock */
  58                 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
  59                 if( op->o_conn->c_txn == CONN_TXN_INACTIVE ) {
  60                         rs->sr_text = "invalid transaction identifier";
  61                         rs->sr_err = LDAP_X_TXN_ID_INVALID;
  62                         goto txnReturn;
  63                 } else if( op->o_conn->c_txn == CONN_TXN_SETTLE ) {
  64                         settle=1;
  65                         goto txnReturn;
  66                 }
  67
  68                 if( op->o_conn->c_txn_backend == NULL ) {
  69                         op->o_conn->c_txn_backend = op->o_bd;
  70
  71                 } else if( op->o_conn->c_txn_backend != op->o_bd ) {
  72                         rs->sr_text = "transaction cannot span multiple database contexts";
  73                         rs->sr_err = LDAP_AFFECTS_MULTIPLE_DSAS;
  74                         goto txnReturn;
  75                 }
  76
  77                 /* insert operation into transaction */
  78
  79                 rs->sr_text = "transaction specified";
  80                 rs->sr_err = LDAP_X_TXN_SPECIFY_OKAY;
  81
  82 txnReturn:
  83                 /* release connection lock */
  84                 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
  85
  86                 if( !settle ) {
  87                         send_ldap_result( op, rs );
  88                         return rs->sr_err;
  89                 }
  90         }
  91 #endif
  92
  93         ctrls[num_ctrls] = 0;
  94
  95         /* check entry's schema */
  96         rs->sr_err = entry_schema_check( op, op->ora_e, NULL,
  97                 get_relax(op), 1, NULL, &rs->sr_text, textbuf, textlen );
  98         if ( rs->sr_err != LDAP_SUCCESS ) {
  99                 Debug( LDAP_DEBUG_TRACE,
 100                         LDAP_XSTRING(bdb_add) ": entry failed schema check: "
 101                         "%s (%d)\n", rs->sr_text, rs->sr_err, 0 );
 102                 goto return_results;
 103         }
 104
 105         /* add opattrs to shadow as well, only missing attrs will actually
 106          * be added; helps compatibility with older OL versions */
 107         rs->sr_err = slap_add_opattrs( op, &rs->sr_text, textbuf, textlen, 1 );
 108         if ( rs->sr_err != LDAP_SUCCESS ) {
 109                 Debug( LDAP_DEBUG_TRACE,
 110                         LDAP_XSTRING(bdb_add) ": entry failed op attrs add: "
 111                         "%s (%d)\n", rs->sr_text, rs->sr_err, 0 );
 112                 goto return_results;
 113         }
 114
 115         if ( get_assert( op ) &&
 116                 ( test_filter( op, op->ora_e, get_assertion( op )) != LDAP_COMPARE_TRUE ))
 117         {
 118                 rs->sr_err = LDAP_ASSERTION_FAILED;
 119                 goto return_results;
 120         }
 121
 122         subentry = is_entry_subentry( op->ora_e );
 123
 124         /* Get our reader TXN */
 125         rs->sr_err = bdb_reader_get( op, bdb->bi_dbenv, &rtxn );
 126
 127         if( 0 ) {
 128 retry:  /* transaction retry */
 129                 if( p ) {
 130                         /* free parent and reader lock */
 131                         if ( p != (Entry *)&slap_entry_root ) {
 132                                 bdb_unlocked_cache_return_entry_r( bdb, p );
 133                         }
 134                         p = NULL;
 135                 }
 136                 rs->sr_err = TXN_ABORT( ltid );
 137                 ltid = NULL;
 138                 LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 139                 opinfo.boi_oe.oe_key = NULL;
 140                 op->o_do_not_cache = opinfo.boi_acl_cache;
 141                 if( rs->sr_err != 0 ) {
 142                         rs->sr_err = LDAP_OTHER;
 143                         rs->sr_text = "internal error";
 144                         goto return_results;
 145                 }
 146                 if ( op->o_abandon ) {
 147                         rs->sr_err = SLAPD_ABANDON;
 148                         goto return_results;
 149                 }
 150                 bdb_trans_backoff( ++num_retries );
 151         }
 152
 153         /* begin transaction */
 154         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid,
 155                 bdb->bi_db_opflags );
 156         rs->sr_text = NULL;
 157         if( rs->sr_err != 0 ) {
 158                 Debug( LDAP_DEBUG_TRACE,
 159                         LDAP_XSTRING(bdb_add) ": txn_begin failed: %s (%d)\n",
 160                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 161                 rs->sr_err = LDAP_OTHER;
 162                 rs->sr_text = "internal error";
 163                 goto return_results;
 164         }
 165
 166         opinfo.boi_oe.oe_key = bdb;
 167         opinfo.boi_txn = ltid;
 168         opinfo.boi_err = 0;
 169         opinfo.boi_acl_cache = op->o_do_not_cache;
 170         LDAP_SLIST_INSERT_HEAD( &op->o_extra, &opinfo.boi_oe, oe_next );
 171
 172         /*
 173          * Get the parent dn and see if the corresponding entry exists.
 174          */
 175         if ( be_issuffix( op->o_bd, &op->ora_e->e_nname ) ) {
 176                 pdn = slap_empty_bv;
 177         } else {
 178                 dnParent( &op->ora_e->e_nname, &pdn );
 179         }
 180
 181         /* get entry or parent */
 182         rs->sr_err = bdb_dn2entry( op, ltid, &op->ora_e->e_nname, &ei,
 183                 1, &lock );
 184         switch( rs->sr_err ) {
 185         case 0:
 186                 rs->sr_err = LDAP_ALREADY_EXISTS;
 187                 goto return_results;
 188         case DB_NOTFOUND:
 189                 break;
 190         case DB_LOCK_DEADLOCK:
 191         case DB_LOCK_NOTGRANTED:
 192                 goto retry;
 193         case LDAP_BUSY:
 194                 rs->sr_text = "ldap server busy";
 195                 goto return_results;
 196         default:
 197                 rs->sr_err = LDAP_OTHER;
 198                 rs->sr_text = "internal error";
 199                 goto return_results;
 200         }
 201
 202         p = ei->bei_e;
 203         if ( !p )
 204                 p = (Entry *)&slap_entry_root;
 205
 206         if ( !bvmatch( &pdn, &p->e_nname ) ) {
 207                 rs->sr_matched = ber_strdup_x( p->e_name.bv_val,
 208                         op->o_tmpmemctx );
 209                 rs->sr_ref = is_entry_referral( p )
 210                         ? get_entry_referrals( op, p )
 211                         : NULL;
 212                 if ( p != (Entry *)&slap_entry_root )
 213                         bdb_unlocked_cache_return_entry_r( bdb, p );
 214                 p = NULL;
 215                 Debug( LDAP_DEBUG_TRACE,
 216                         LDAP_XSTRING(bdb_add) ": parent "
 217                         "does not exist\n", 0, 0, 0 );
 218
 219                 rs->sr_err = LDAP_REFERRAL;
 220                 rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
 221                 goto return_results;
 222         }
 223
 224         rs->sr_err = access_allowed( op, p,
 225                 children, NULL, ACL_WADD, NULL );
 226
 227         if ( ! rs->sr_err ) {
 228                 switch( opinfo.boi_err ) {
 229                 case DB_LOCK_DEADLOCK:
 230                 case DB_LOCK_NOTGRANTED:
 231                         goto retry;
 232                 }
 233
 234                 if ( p != (Entry *)&slap_entry_root )
 235                         bdb_unlocked_cache_return_entry_r( bdb, p );
 236                 p = NULL;
 237
 238                 Debug( LDAP_DEBUG_TRACE,
 239                         LDAP_XSTRING(bdb_add) ": no write access to parent\n",
 240                         0, 0, 0 );
 241                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 242                 rs->sr_text = "no write access to parent";
 243                 goto return_results;;
 244         }
 245
 246         if ( p != (Entry *)&slap_entry_root ) {
 247                 if ( is_entry_subentry( p ) ) {
 248                         bdb_unlocked_cache_return_entry_r( bdb, p );
 249                         p = NULL;
 250                         /* parent is a subentry, don't allow add */
 251                         Debug( LDAP_DEBUG_TRACE,
 252                                 LDAP_XSTRING(bdb_add) ": parent is subentry\n",
 253                                 0, 0, 0 );
 254                         rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 255                         rs->sr_text = "parent is a subentry";
 256                         goto return_results;;
 257                 }
 258
 259                 if ( is_entry_alias( p ) ) {
 260                         bdb_unlocked_cache_return_entry_r( bdb, p );
 261                         p = NULL;
 262                         /* parent is an alias, don't allow add */
 263                         Debug( LDAP_DEBUG_TRACE,
 264                                 LDAP_XSTRING(bdb_add) ": parent is alias\n",
 265                                 0, 0, 0 );
 266                         rs->sr_err = LDAP_ALIAS_PROBLEM;
 267                         rs->sr_text = "parent is an alias";
 268                         goto return_results;;
 269                 }
 270
 271                 if ( is_entry_referral( p ) ) {
 272                         /* parent is a referral, don't allow add */
 273                         rs->sr_matched = ber_strdup_x( p->e_name.bv_val,
 274                                 op->o_tmpmemctx );
 275                         rs->sr_ref = get_entry_referrals( op, p );
 276                         bdb_unlocked_cache_return_entry_r( bdb, p );
 277                         p = NULL;
 278                         Debug( LDAP_DEBUG_TRACE,
 279                                 LDAP_XSTRING(bdb_add) ": parent is referral\n",
 280                                 0, 0, 0 );
 281
 282                         rs->sr_err = LDAP_REFERRAL;
 283                         rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
 284                         goto return_results;
 285                 }
 286
 287         }
 288
 289         if ( subentry ) {
 290                 /* FIXME: */
 291                 /* parent must be an administrative point of the required kind */
 292         }
 293
 294         /* free parent and reader lock */
 295         if ( p != (Entry *)&slap_entry_root ) {
 296                 if ( p->e_nname.bv_len ) {
 297                         struct berval ppdn;
 298
 299                         /* ITS#5326: use parent's DN if differs from provided one */
 300                         dnParent( &op->ora_e->e_name, &ppdn );
 301                         if ( !dn_match( &p->e_name, &ppdn ) ) {
 302                                 struct berval rdn;
 303                                 struct berval newdn;
 304
 305                                 dnRdn( &op->ora_e->e_name, &rdn );
 306
 307                                 build_new_dn( &newdn, &p->e_name, &rdn, NULL );
 308                                 if ( op->ora_e->e_name.bv_val != op->o_req_dn.bv_val )
 309                                         ber_memfree( op->ora_e->e_name.bv_val );
 310                                 op->ora_e->e_name = newdn;
 311
 312                                 /* FIXME: should check whether
 313                                  * dnNormalize(newdn) == e->e_nname ... */
 314                         }
 315                 }
 316
 317                 bdb_unlocked_cache_return_entry_r( bdb, p );
 318         }
 319         p = NULL;
 320
 321         rs->sr_err = access_allowed( op, op->ora_e,
 322                 entry, NULL, ACL_WADD, NULL );
 323
 324         if ( ! rs->sr_err ) {
 325                 switch( opinfo.boi_err ) {
 326                 case DB_LOCK_DEADLOCK:
 327                 case DB_LOCK_NOTGRANTED:
 328                         goto retry;
 329                 }
 330
 331                 Debug( LDAP_DEBUG_TRACE,
 332                         LDAP_XSTRING(bdb_add) ": no write access to entry\n",
 333                         0, 0, 0 );
 334                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 335                 rs->sr_text = "no write access to entry";
 336                 goto return_results;;
 337         }
 338
 339         /*
 340          * Check ACL for attribute write access
 341          */
 342         if (!acl_check_modlist(op, oe, op->ora_modlist)) {
 343                 switch( opinfo.boi_err ) {
 344                 case DB_LOCK_DEADLOCK:
 345                 case DB_LOCK_NOTGRANTED:
 346                         goto retry;
 347                 }
 348
 349                 Debug( LDAP_DEBUG_TRACE,
 350                         LDAP_XSTRING(bdb_add) ": no write access to attribute\n",
 351                         0, 0, 0 );
 352                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 353                 rs->sr_text = "no write access to attribute";
 354                 goto return_results;;
 355         }
 356
 357         if ( eid == NOID ) {
 358                 rs->sr_err = bdb_next_id( op->o_bd, &eid );
 359                 if( rs->sr_err != 0 ) {
 360                         Debug( LDAP_DEBUG_TRACE,
 361                                 LDAP_XSTRING(bdb_add) ": next_id failed (%d)\n",
 362                                 rs->sr_err, 0, 0 );
 363                         rs->sr_err = LDAP_OTHER;
 364                         rs->sr_text = "internal error";
 365                         goto return_results;
 366                 }
 367                 op->ora_e->e_id = eid;
 368         }
 369
 370         /* nested transaction */
 371         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, &lt2,
 372                 bdb->bi_db_opflags );
 373         rs->sr_text = NULL;
 374         if( rs->sr_err != 0 ) {
 375                 Debug( LDAP_DEBUG_TRACE,
 376                         LDAP_XSTRING(bdb_add) ": txn_begin(2) failed: "
 377                         "%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
 378                 rs->sr_err = LDAP_OTHER;
 379                 rs->sr_text = "internal error";
 380                 goto return_results;
 381         }
 382
 383         /* dn2id index */
 384         rs->sr_err = bdb_dn2id_add( op, lt2, ei, op->ora_e );
 385         if ( rs->sr_err != 0 ) {
 386                 Debug( LDAP_DEBUG_TRACE,
 387                         LDAP_XSTRING(bdb_add) ": dn2id_add failed: %s (%d)\n",
 388                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 389
 390                 switch( rs->sr_err ) {
 391                 case DB_LOCK_DEADLOCK:
 392                 case DB_LOCK_NOTGRANTED:
 393                         goto retry;
 394                 case DB_KEYEXIST:
 395                         rs->sr_err = LDAP_ALREADY_EXISTS;
 396                         break;
 397                 default:
 398                         rs->sr_err = LDAP_OTHER;
 399                 }
 400                 goto return_results;
 401         }
 402
 403         /* attribute indexes */
 404         rs->sr_err = bdb_index_entry_add( op, lt2, op->ora_e );
 405         if ( rs->sr_err != LDAP_SUCCESS ) {
 406                 Debug( LDAP_DEBUG_TRACE,
 407                         LDAP_XSTRING(bdb_add) ": index_entry_add failed\n",
 408                         0, 0, 0 );
 409                 switch( rs->sr_err ) {
 410                 case DB_LOCK_DEADLOCK:
 411                 case DB_LOCK_NOTGRANTED:
 412                         goto retry;
 413                 default:
 414                         rs->sr_err = LDAP_OTHER;
 415                 }
 416                 rs->sr_text = "index generation failed";
 417                 goto return_results;
 418         }
 419
 420         /* id2entry index */
 421         rs->sr_err = bdb_id2entry_add( op->o_bd, lt2, op->ora_e );
 422         if ( rs->sr_err != 0 ) {
 423                 Debug( LDAP_DEBUG_TRACE,
 424                         LDAP_XSTRING(bdb_add) ": id2entry_add failed\n",
 425                         0, 0, 0 );
 426                 switch( rs->sr_err ) {
 427                 case DB_LOCK_DEADLOCK:
 428                 case DB_LOCK_NOTGRANTED:
 429                         goto retry;
 430                 default:
 431                         rs->sr_err = LDAP_OTHER;
 432                 }
 433                 rs->sr_text = "entry store failed";
 434                 goto return_results;
 435         }
 436
 437         if ( TXN_COMMIT( lt2, 0 ) != 0 ) {
 438                 rs->sr_err = LDAP_OTHER;
 439                 rs->sr_text = "txn_commit(2) failed";
 440                 goto return_results;
 441         }
 442
 443         /* post-read */
 444         if( op->o_postread ) {
 445                 if( postread_ctrl == NULL ) {
 446                         postread_ctrl = &ctrls[num_ctrls++];
 447                         ctrls[num_ctrls] = NULL;
 448                 }
 449                 if ( slap_read_controls( op, rs, op->ora_e,
 450                         &slap_post_read_bv, postread_ctrl ) )
 451                 {
 452                         Debug( LDAP_DEBUG_TRACE,
 453                                 "<=- " LDAP_XSTRING(bdb_add) ": post-read "
 454                                 "failed!\n", 0, 0, 0 );
 455                         if ( op->o_postread & SLAP_CONTROL_CRITICAL ) {
 456                                 /* FIXME: is it correct to abort
 457                                  * operation if control fails? */
 458                                 goto return_results;
 459                         }
 460                 }
 461         }
 462
 463         if ( op->o_noop ) {
 464                 if (( rs->sr_err=TXN_ABORT( ltid )) != 0 ) {
 465                         rs->sr_text = "txn_abort (no-op) failed";
 466                 } else {
 467                         rs->sr_err = LDAP_X_NO_OPERATION;
 468                         ltid = NULL;
 469                         goto return_results;
 470                 }
 471
 472         } else {
 473                 struct berval nrdn;
 474
 475                 /* pick the RDN if not suffix; otherwise pick the entire DN */
 476                 if (pdn.bv_len) {
 477                         nrdn.bv_val = op->ora_e->e_nname.bv_val;
 478                         nrdn.bv_len = pdn.bv_val - op->ora_e->e_nname.bv_val - 1;
 479                 } else {
 480                         nrdn = op->ora_e->e_nname;
 481                 }
 482
 483                 /* Use the reader txn here, outside the add txn */
 484                 bdb_cache_add( bdb, ei, op->ora_e, &nrdn, rtxn, &lock );
 485
 486                 if(( rs->sr_err=TXN_COMMIT( ltid, 0 )) != 0 ) {
 487                         rs->sr_text = "txn_commit failed";
 488                 } else {
 489                         rs->sr_err = LDAP_SUCCESS;
 490                 }
 491         }
 492
 493         ltid = NULL;
 494         LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 495         opinfo.boi_oe.oe_key = NULL;
 496
 497         if ( rs->sr_err != LDAP_SUCCESS ) {
 498                 Debug( LDAP_DEBUG_TRACE,
 499                         LDAP_XSTRING(bdb_add) ": %s : %s (%d)\n",
 500                         rs->sr_text, db_strerror(rs->sr_err), rs->sr_err );
 501                 rs->sr_err = LDAP_OTHER;
 502                 goto return_results;
 503         }
 504
 505         Debug(LDAP_DEBUG_TRACE,
 506                 LDAP_XSTRING(bdb_add) ": added%s id=%08lx dn=\"%s\"\n",
 507                 op->o_noop ? " (no-op)" : "",
 508                 op->ora_e->e_id, op->ora_e->e_dn );
 509
 510         rs->sr_text = NULL;
 511         if( num_ctrls ) rs->sr_ctrls = ctrls;
 512
 513 return_results:
 514         success = rs->sr_err;
 515         send_ldap_result( op, rs );
 516         slap_graduate_commit_csn( op );
 517
 518         if( ltid != NULL ) {
 519                 TXN_ABORT( ltid );
 520         }
 521         if ( opinfo.boi_oe.oe_key ) {
 522                 LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 523         }
 524
 525         if( success == LDAP_SUCCESS ) {
 526                 /* We own the entry now, and it can be purged at will
 527                  * Check to make sure it's the same entry we entered with.
 528                  * Possibly a callback may have mucked with it, although
 529                  * in general callbacks should treat the entry as read-only.
 530                  */
 531                 bdb_cache_return_entry_r( bdb, oe, &lock );
 532                 if ( op->ora_e == oe )
 533                         op->ora_e = NULL;
 534
 535                 if ( bdb->bi_txn_cp_kbyte ) {
 536                         TXN_CHECKPOINT( bdb->bi_dbenv,
 537                                 bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 538                 }
 539         }
 540
 541         if( postread_ctrl != NULL && (*postread_ctrl) != NULL ) {
 542                 slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 543                 slap_sl_free( *postread_ctrl, op->o_tmpmemctx );
 544         }
 545
 546         return rs->sr_err;
 547 }