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         /*
 303          * Check ACL for attribute write access
 304          */
 305         if (!acl_check_modlist(op, oe, op->ora_modlist)) {
 306                 switch( opinfo.boi_err ) {
 307                 case DB_LOCK_DEADLOCK:
 308                 case DB_LOCK_NOTGRANTED:
 309                         goto retry;
 310                 }
 311
 312                 Debug( LDAP_DEBUG_TRACE,
 313                         LDAP_XSTRING(bdb_add) ": no write access to attribute\n",
 314                         0, 0, 0 );
 315                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 316                 rs->sr_text = "no write access to attribute";
 317                 goto return_results;;
 318         }
 319
 320         if ( eid == NOID ) {
 321                 rs->sr_err = bdb_next_id( op->o_bd, &eid );
 322                 if( rs->sr_err != 0 ) {
 323                         Debug( LDAP_DEBUG_TRACE,
 324                                 LDAP_XSTRING(bdb_add) ": next_id failed (%d)\n",
 325                                 rs->sr_err, 0, 0 );
 326                         rs->sr_err = LDAP_OTHER;
 327                         rs->sr_text = "internal error";
 328                         goto return_results;
 329                 }
 330                 op->oq_add.rs_e->e_id = eid;
 331         }
 332
 333         /* nested transaction */
 334         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, &lt2,
 335                 bdb->bi_db_opflags );
 336         rs->sr_text = NULL;
 337         if( rs->sr_err != 0 ) {
 338                 Debug( LDAP_DEBUG_TRACE,
 339                         LDAP_XSTRING(bdb_add) ": txn_begin(2) failed: "
 340                         "%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
 341                 rs->sr_err = LDAP_OTHER;
 342                 rs->sr_text = "internal error";
 343                 goto return_results;
 344         }
 345
 346         /* dn2id index */
 347         rs->sr_err = bdb_dn2id_add( op, lt2, ei, op->oq_add.rs_e );
 348         if ( rs->sr_err != 0 ) {
 349                 Debug( LDAP_DEBUG_TRACE,
 350                         LDAP_XSTRING(bdb_add) ": dn2id_add failed: %s (%d)\n",
 351                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 352
 353                 switch( rs->sr_err ) {
 354                 case DB_LOCK_DEADLOCK:
 355                 case DB_LOCK_NOTGRANTED:
 356                         goto retry;
 357                 case DB_KEYEXIST:
 358                         rs->sr_err = LDAP_ALREADY_EXISTS;
 359                         break;
 360                 default:
 361                         rs->sr_err = LDAP_OTHER;
 362                 }
 363                 goto return_results;
 364         }
 365
 366         /* attribute indexes */
 367         rs->sr_err = bdb_index_entry_add( op, lt2, op->oq_add.rs_e );
 368         if ( rs->sr_err != LDAP_SUCCESS ) {
 369                 Debug( LDAP_DEBUG_TRACE,
 370                         LDAP_XSTRING(bdb_add) ": index_entry_add failed\n",
 371                         0, 0, 0 );
 372                 switch( rs->sr_err ) {
 373                 case DB_LOCK_DEADLOCK:
 374                 case DB_LOCK_NOTGRANTED:
 375                         goto retry;
 376                 default:
 377                         rs->sr_err = LDAP_OTHER;
 378                 }
 379                 rs->sr_text = "index generation failed";
 380                 goto return_results;
 381         }
 382
 383         /* id2entry index */
 384         rs->sr_err = bdb_id2entry_add( op->o_bd, lt2, op->oq_add.rs_e );
 385         if ( rs->sr_err != 0 ) {
 386                 Debug( LDAP_DEBUG_TRACE,
 387                         LDAP_XSTRING(bdb_add) ": id2entry_add failed\n",
 388                         0, 0, 0 );
 389                 switch( rs->sr_err ) {
 390                 case DB_LOCK_DEADLOCK:
 391                 case DB_LOCK_NOTGRANTED:
 392                         goto retry;
 393                 default:
 394                         rs->sr_err = LDAP_OTHER;
 395                 }
 396                 rs->sr_text = "entry store failed";
 397                 goto return_results;
 398         }
 399
 400         if ( TXN_COMMIT( lt2, 0 ) != 0 ) {
 401                 rs->sr_err = LDAP_OTHER;
 402                 rs->sr_text = "txn_commit(2) failed";
 403                 goto return_results;
 404         }
 405
 406         /* post-read */
 407         if( op->o_postread ) {
 408                 if( postread_ctrl == NULL ) {
 409                         postread_ctrl = &ctrls[num_ctrls++];
 410                         ctrls[num_ctrls] = NULL;
 411                 }
 412                 if ( slap_read_controls( op, rs, op->oq_add.rs_e,
 413                         &slap_post_read_bv, postread_ctrl ) )
 414                 {
 415                         Debug( LDAP_DEBUG_TRACE,
 416                                 "<=- " LDAP_XSTRING(bdb_add) ": post-read "
 417                                 "failed!\n", 0, 0, 0 );
 418                         if ( op->o_postread & SLAP_CONTROL_CRITICAL ) {
 419                                 /* FIXME: is it correct to abort
 420                                  * operation if control fails? */
 421                                 goto return_results;
 422                         }
 423                 }
 424         }
 425
 426         if ( op->o_noop ) {
 427                 if (( rs->sr_err=TXN_ABORT( ltid )) != 0 ) {
 428                         rs->sr_text = "txn_abort (no-op) failed";
 429                 } else {
 430                         rs->sr_err = LDAP_X_NO_OPERATION;
 431                         ltid = NULL;
 432                         goto return_results;
 433                 }
 434
 435         } else {
 436                 struct berval nrdn;
 437
 438                 /* pick the RDN if not suffix; otherwise pick the entire DN */
 439                 if (pdn.bv_len) {
 440                         nrdn.bv_val = op->ora_e->e_nname.bv_val;
 441                         nrdn.bv_len = pdn.bv_val - op->ora_e->e_nname.bv_val - 1;
 442                 } else {
 443                         nrdn = op->ora_e->e_nname;
 444                 }
 445
 446                 /* Use the reader txn here, outside the add txn */
 447                 bdb_cache_add( bdb, ei, op->ora_e, &nrdn, rtxn, &lock );
 448
 449                 if(( rs->sr_err=TXN_COMMIT( ltid, 0 )) != 0 ) {
 450                         rs->sr_text = "txn_commit failed";
 451                 } else {
 452                         rs->sr_err = LDAP_SUCCESS;
 453                 }
 454         }
 455
 456         ltid = NULL;
 457         LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 458         opinfo.boi_oe.oe_key = NULL;
 459
 460         if ( rs->sr_err != LDAP_SUCCESS ) {
 461                 Debug( LDAP_DEBUG_TRACE,
 462                         LDAP_XSTRING(bdb_add) ": %s : %s (%d)\n",
 463                         rs->sr_text, db_strerror(rs->sr_err), rs->sr_err );
 464                 rs->sr_err = LDAP_OTHER;
 465                 goto return_results;
 466         }
 467
 468         Debug(LDAP_DEBUG_TRACE,
 469                 LDAP_XSTRING(bdb_add) ": added%s id=%08lx dn=\"%s\"\n",
 470                 op->o_noop ? " (no-op)" : "",
 471                 op->oq_add.rs_e->e_id, op->oq_add.rs_e->e_dn );
 472
 473         rs->sr_text = NULL;
 474         if( num_ctrls ) rs->sr_ctrls = ctrls;
 475
 476 return_results:
 477         success = rs->sr_err;
 478         send_ldap_result( op, rs );
 479         slap_graduate_commit_csn( op );
 480
 481         if( ltid != NULL ) {
 482                 TXN_ABORT( ltid );
 483         }
 484         if ( opinfo.boi_oe.oe_key ) {
 485                 LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 486         }
 487
 488         if( success == LDAP_SUCCESS ) {
 489                 /* We own the entry now, and it can be purged at will
 490                  * Check to make sure it's the same entry we entered with.
 491                  * Possibly a callback may have mucked with it, although
 492                  * in general callbacks should treat the entry as read-only.
 493                  */
 494                 bdb_cache_return_entry_r( bdb, oe, &lock );
 495                 if ( op->ora_e == oe )
 496                         op->ora_e = NULL;
 497
 498                 if ( bdb->bi_txn_cp_kbyte ) {
 499                         TXN_CHECKPOINT( bdb->bi_dbenv,
 500                                 bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 501                 }
 502         }
 503
 504         if( postread_ctrl != NULL && (*postread_ctrl) != NULL ) {
 505                 slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 506                 slap_sl_free( *postread_ctrl, op->o_tmpmemctx );
 507         }
 508
 509         return rs->sr_err;
 510 }