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 2000-2008 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->oq_add.rs_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->oq_add.rs_e, NULL,
  97                 get_relax(op), 1, &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         subentry = is_entry_subentry( op->oq_add.rs_e );
 116
 117         /* Get our reader TXN */
 118         rs->sr_err = bdb_reader_get( op, bdb->bi_dbenv, &rtxn );
 119
 120         if( 0 ) {
 121 retry:  /* transaction retry */
 122                 if( p ) {
 123                         /* free parent and reader lock */
 124                         if ( p != (Entry *)&slap_entry_root ) {
 125                                 bdb_unlocked_cache_return_entry_r( bdb, p );
 126                         }
 127                         p = NULL;
 128                 }
 129                 rs->sr_err = TXN_ABORT( ltid );
 130                 ltid = NULL;
 131                 LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 132                 opinfo.boi_oe.oe_key = NULL;
 133                 op->o_do_not_cache = opinfo.boi_acl_cache;
 134                 if( rs->sr_err != 0 ) {
 135                         rs->sr_err = LDAP_OTHER;
 136                         rs->sr_text = "internal error";
 137                         goto return_results;
 138                 }
 139                 if ( op->o_abandon ) {
 140                         rs->sr_err = SLAPD_ABANDON;
 141                         goto return_results;
 142                 }
 143                 bdb_trans_backoff( ++num_retries );
 144         }
 145
 146         /* begin transaction */
 147         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid,
 148                 bdb->bi_db_opflags );
 149         rs->sr_text = NULL;
 150         if( rs->sr_err != 0 ) {
 151                 Debug( LDAP_DEBUG_TRACE,
 152                         LDAP_XSTRING(bdb_add) ": txn_begin failed: %s (%d)\n",
 153                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 154                 rs->sr_err = LDAP_OTHER;
 155                 rs->sr_text = "internal error";
 156                 goto return_results;
 157         }
 158
 159         opinfo.boi_oe.oe_key = bdb;
 160         opinfo.boi_txn = ltid;
 161         opinfo.boi_err = 0;
 162         opinfo.boi_acl_cache = op->o_do_not_cache;
 163         LDAP_SLIST_INSERT_HEAD( &op->o_extra, &opinfo.boi_oe, oe_next );
 164
 165         /*
 166          * Get the parent dn and see if the corresponding entry exists.
 167          */
 168         if ( be_issuffix( op->o_bd, &op->oq_add.rs_e->e_nname ) ) {
 169                 pdn = slap_empty_bv;
 170         } else {
 171                 dnParent( &op->oq_add.rs_e->e_nname, &pdn );
 172         }
 173
 174         /* get entry or parent */
 175         rs->sr_err = bdb_dn2entry( op, ltid, &op->ora_e->e_nname, &ei,
 176                 1, &lock );
 177         switch( rs->sr_err ) {
 178         case 0:
 179                 rs->sr_err = LDAP_ALREADY_EXISTS;
 180                 goto return_results;
 181         case DB_NOTFOUND:
 182                 break;
 183         case DB_LOCK_DEADLOCK:
 184         case DB_LOCK_NOTGRANTED:
 185                 goto retry;
 186         case LDAP_BUSY:
 187                 rs->sr_text = "ldap server busy";
 188                 goto return_results;
 189         default:
 190                 rs->sr_err = LDAP_OTHER;
 191                 rs->sr_text = "internal error";
 192                 goto return_results;
 193         }
 194
 195         p = ei->bei_e;
 196         if ( !p )
 197                 p = (Entry *)&slap_entry_root;
 198
 199         if ( !bvmatch( &pdn, &p->e_nname ) ) {
 200                 rs->sr_matched = ber_strdup_x( p->e_name.bv_val,
 201                         op->o_tmpmemctx );
 202                 rs->sr_ref = is_entry_referral( p )
 203                         ? get_entry_referrals( op, p )
 204                         : NULL;
 205                 bdb_unlocked_cache_return_entry_r( bdb, p );
 206                 p = NULL;
 207                 Debug( LDAP_DEBUG_TRACE,
 208                         LDAP_XSTRING(bdb_add) ": parent "
 209                         "does not exist\n", 0, 0, 0 );
 210
 211                 rs->sr_err = LDAP_REFERRAL;
 212                 rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
 213                 goto return_results;
 214         }
 215
 216         rs->sr_err = access_allowed( op, p,
 217                 children, NULL, ACL_WADD, NULL );
 218
 219         if ( ! rs->sr_err ) {
 220                 switch( opinfo.boi_err ) {
 221                 case DB_LOCK_DEADLOCK:
 222                 case DB_LOCK_NOTGRANTED:
 223                         goto retry;
 224                 }
 225
 226                 Debug( LDAP_DEBUG_TRACE,
 227                         LDAP_XSTRING(bdb_add) ": no write access to parent\n",
 228                         0, 0, 0 );
 229                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 230                 rs->sr_text = "no write access to parent";
 231                 goto return_results;;
 232         }
 233
 234         if ( p != (Entry *)&slap_entry_root ) {
 235                 if ( is_entry_subentry( p ) ) {
 236                         /* parent is a subentry, don't allow add */
 237                         Debug( LDAP_DEBUG_TRACE,
 238                                 LDAP_XSTRING(bdb_add) ": parent is subentry\n",
 239                                 0, 0, 0 );
 240                         rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 241                         rs->sr_text = "parent is a subentry";
 242                         goto return_results;;
 243                 }
 244
 245                 if ( is_entry_alias( p ) ) {
 246                         /* parent is an alias, don't allow add */
 247                         Debug( LDAP_DEBUG_TRACE,
 248                                 LDAP_XSTRING(bdb_add) ": parent is alias\n",
 249                                 0, 0, 0 );
 250                         rs->sr_err = LDAP_ALIAS_PROBLEM;
 251                         rs->sr_text = "parent is an alias";
 252                         goto return_results;;
 253                 }
 254
 255                 if ( is_entry_referral( p ) ) {
 256                         /* parent is a referral, don't allow add */
 257                         rs->sr_matched = ber_strdup_x( p->e_name.bv_val,
 258                                 op->o_tmpmemctx );
 259                         rs->sr_ref = get_entry_referrals( op, p );
 260                         bdb_unlocked_cache_return_entry_r( bdb, p );
 261                         p = NULL;
 262                         Debug( LDAP_DEBUG_TRACE,
 263                                 LDAP_XSTRING(bdb_add) ": parent is referral\n",
 264                                 0, 0, 0 );
 265
 266                         rs->sr_err = LDAP_REFERRAL;
 267                         rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
 268                         goto return_results;
 269                 }
 270
 271         }
 272
 273         if ( subentry ) {
 274                 /* FIXME: */
 275                 /* parent must be an administrative point of the required kind */
 276         }
 277
 278         /* free parent and reader lock */
 279         if ( p != (Entry *)&slap_entry_root ) {
 280                 bdb_unlocked_cache_return_entry_r( bdb, p );
 281         }
 282         p = NULL;
 283
 284         rs->sr_err = access_allowed( op, op->oq_add.rs_e,
 285                 entry, NULL, ACL_WADD, NULL );
 286
 287         if ( ! rs->sr_err ) {
 288                 switch( opinfo.boi_err ) {
 289                 case DB_LOCK_DEADLOCK:
 290                 case DB_LOCK_NOTGRANTED:
 291                         goto retry;
 292                 }
 293
 294                 Debug( LDAP_DEBUG_TRACE,
 295                         LDAP_XSTRING(bdb_add) ": no write access to entry\n",
 296                         0, 0, 0 );
 297                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 298                 rs->sr_text = "no write access to entry";
 299                 goto return_results;;
 300         }
 301
 302         if ( eid == NOID ) {
 303                 rs->sr_err = bdb_next_id( op->o_bd, &eid );
 304                 if( rs->sr_err != 0 ) {
 305                         Debug( LDAP_DEBUG_TRACE,
 306                                 LDAP_XSTRING(bdb_add) ": next_id failed (%d)\n",
 307                                 rs->sr_err, 0, 0 );
 308                         rs->sr_err = LDAP_OTHER;
 309                         rs->sr_text = "internal error";
 310                         goto return_results;
 311                 }
 312                 op->oq_add.rs_e->e_id = eid;
 313         }
 314
 315         /* nested transaction */
 316         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, &lt2,
 317                 bdb->bi_db_opflags );
 318         rs->sr_text = NULL;
 319         if( rs->sr_err != 0 ) {
 320                 Debug( LDAP_DEBUG_TRACE,
 321                         LDAP_XSTRING(bdb_add) ": txn_begin(2) failed: "
 322                         "%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
 323                 rs->sr_err = LDAP_OTHER;
 324                 rs->sr_text = "internal error";
 325                 goto return_results;
 326         }
 327
 328         /* dn2id index */
 329         rs->sr_err = bdb_dn2id_add( op, lt2, ei, op->oq_add.rs_e );
 330         if ( rs->sr_err != 0 ) {
 331                 Debug( LDAP_DEBUG_TRACE,
 332                         LDAP_XSTRING(bdb_add) ": dn2id_add failed: %s (%d)\n",
 333                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 334
 335                 switch( rs->sr_err ) {
 336                 case DB_LOCK_DEADLOCK:
 337                 case DB_LOCK_NOTGRANTED:
 338                         goto retry;
 339                 case DB_KEYEXIST:
 340                         rs->sr_err = LDAP_ALREADY_EXISTS;
 341                         break;
 342                 default:
 343                         rs->sr_err = LDAP_OTHER;
 344                 }
 345                 goto return_results;
 346         }
 347
 348         /* attribute indexes */
 349         rs->sr_err = bdb_index_entry_add( op, lt2, op->oq_add.rs_e );
 350         if ( rs->sr_err != LDAP_SUCCESS ) {
 351                 Debug( LDAP_DEBUG_TRACE,
 352                         LDAP_XSTRING(bdb_add) ": index_entry_add failed\n",
 353                         0, 0, 0 );
 354                 switch( rs->sr_err ) {
 355                 case DB_LOCK_DEADLOCK:
 356                 case DB_LOCK_NOTGRANTED:
 357                         goto retry;
 358                 default:
 359                         rs->sr_err = LDAP_OTHER;
 360                 }
 361                 rs->sr_text = "index generation failed";
 362                 goto return_results;
 363         }
 364
 365         /* id2entry index */
 366         rs->sr_err = bdb_id2entry_add( op->o_bd, lt2, op->oq_add.rs_e );
 367         if ( rs->sr_err != 0 ) {
 368                 Debug( LDAP_DEBUG_TRACE,
 369                         LDAP_XSTRING(bdb_add) ": id2entry_add failed\n",
 370                         0, 0, 0 );
 371                 switch( rs->sr_err ) {
 372                 case DB_LOCK_DEADLOCK:
 373                 case DB_LOCK_NOTGRANTED:
 374                         goto retry;
 375                 default:
 376                         rs->sr_err = LDAP_OTHER;
 377                 }
 378                 rs->sr_text = "entry store failed";
 379                 goto return_results;
 380         }
 381
 382         if ( TXN_COMMIT( lt2, 0 ) != 0 ) {
 383                 rs->sr_err = LDAP_OTHER;
 384                 rs->sr_text = "txn_commit(2) failed";
 385                 goto return_results;
 386         }
 387
 388         /* post-read */
 389         if( op->o_postread ) {
 390                 if( postread_ctrl == NULL ) {
 391                         postread_ctrl = &ctrls[num_ctrls++];
 392                         ctrls[num_ctrls] = NULL;
 393                 }
 394                 if ( slap_read_controls( op, rs, op->oq_add.rs_e,
 395                         &slap_post_read_bv, postread_ctrl ) )
 396                 {
 397                         Debug( LDAP_DEBUG_TRACE,
 398                                 "<=- " LDAP_XSTRING(bdb_add) ": post-read "
 399                                 "failed!\n", 0, 0, 0 );
 400                         if ( op->o_postread & SLAP_CONTROL_CRITICAL ) {
 401                                 /* FIXME: is it correct to abort
 402                                  * operation if control fails? */
 403                                 goto return_results;
 404                         }
 405                 }
 406         }
 407
 408         if ( op->o_noop ) {
 409                 if (( rs->sr_err=TXN_ABORT( ltid )) != 0 ) {
 410                         rs->sr_text = "txn_abort (no-op) failed";
 411                 } else {
 412                         rs->sr_err = LDAP_X_NO_OPERATION;
 413                         ltid = NULL;
 414                         goto return_results;
 415                 }
 416
 417         } else {
 418                 struct berval nrdn;
 419
 420                 /* pick the RDN if not suffix; otherwise pick the entire DN */
 421                 if (pdn.bv_len) {
 422                         nrdn.bv_val = op->ora_e->e_nname.bv_val;
 423                         nrdn.bv_len = pdn.bv_val - op->ora_e->e_nname.bv_val - 1;
 424                 } else {
 425                         nrdn = op->ora_e->e_nname;
 426                 }
 427
 428                 /* Use the reader txn here, outside the add txn */
 429                 bdb_cache_add( bdb, ei, op->ora_e, &nrdn, rtxn, &lock );
 430
 431                 if(( rs->sr_err=TXN_COMMIT( ltid, 0 )) != 0 ) {
 432                         rs->sr_text = "txn_commit failed";
 433                 } else {
 434                         rs->sr_err = LDAP_SUCCESS;
 435                 }
 436         }
 437
 438         ltid = NULL;
 439         LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 440         opinfo.boi_oe.oe_key = NULL;
 441
 442         if ( rs->sr_err != LDAP_SUCCESS ) {
 443                 Debug( LDAP_DEBUG_TRACE,
 444                         LDAP_XSTRING(bdb_add) ": %s : %s (%d)\n",
 445                         rs->sr_text, db_strerror(rs->sr_err), rs->sr_err );
 446                 rs->sr_err = LDAP_OTHER;
 447                 goto return_results;
 448         }
 449
 450         Debug(LDAP_DEBUG_TRACE,
 451                 LDAP_XSTRING(bdb_add) ": added%s id=%08lx dn=\"%s\"\n",
 452                 op->o_noop ? " (no-op)" : "",
 453                 op->oq_add.rs_e->e_id, op->oq_add.rs_e->e_dn );
 454
 455         rs->sr_text = NULL;
 456         if( num_ctrls ) rs->sr_ctrls = ctrls;
 457
 458 return_results:
 459         success = rs->sr_err;
 460         send_ldap_result( op, rs );
 461         slap_graduate_commit_csn( op );
 462
 463         if( ltid != NULL ) {
 464                 TXN_ABORT( ltid );
 465         }
 466         if ( opinfo.boi_oe.oe_key ) {
 467                 LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 468         }
 469
 470         if( success == LDAP_SUCCESS ) {
 471                 /* We own the entry now, and it can be purged at will
 472                  * Check to make sure it's the same entry we entered with.
 473                  * Possibly a callback may have mucked with it, although
 474                  * in general callbacks should treat the entry as read-only.
 475                  */
 476                 bdb_cache_return_entry_r( bdb, oe, &lock );
 477                 if ( op->ora_e == oe )
 478                         op->ora_e = NULL;
 479
 480                 if ( bdb->bi_txn_cp_kbyte ) {
 481                         TXN_CHECKPOINT( bdb->bi_dbenv,
 482                                 bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 483                 }
 484         }
 485
 486         if( postread_ctrl != NULL && (*postread_ctrl) != NULL ) {
 487                 slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 488                 slap_sl_free( *postread_ctrl, op->o_tmpmemctx );
 489         }
 490
 491         return rs->sr_err;
 492 }