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 2000-2010 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                 bdb_unlocked_cache_return_entry_r( bdb, p );
 297         }
 298         p = NULL;
 299
 300         rs->sr_err = access_allowed( op, op->ora_e,
 301                 entry, NULL, ACL_WADD, NULL );
 302
 303         if ( ! rs->sr_err ) {
 304                 switch( opinfo.boi_err ) {
 305                 case DB_LOCK_DEADLOCK:
 306                 case DB_LOCK_NOTGRANTED:
 307                         goto retry;
 308                 }
 309
 310                 Debug( LDAP_DEBUG_TRACE,
 311                         LDAP_XSTRING(bdb_add) ": no write access to entry\n",
 312                         0, 0, 0 );
 313                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 314                 rs->sr_text = "no write access to entry";
 315                 goto return_results;;
 316         }
 317
 318         /*
 319          * Check ACL for attribute write access
 320          */
 321         if (!acl_check_modlist(op, oe, op->ora_modlist)) {
 322                 switch( opinfo.boi_err ) {
 323                 case DB_LOCK_DEADLOCK:
 324                 case DB_LOCK_NOTGRANTED:
 325                         goto retry;
 326                 }
 327
 328                 Debug( LDAP_DEBUG_TRACE,
 329                         LDAP_XSTRING(bdb_add) ": no write access to attribute\n",
 330                         0, 0, 0 );
 331                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 332                 rs->sr_text = "no write access to attribute";
 333                 goto return_results;;
 334         }
 335
 336         if ( eid == NOID ) {
 337                 rs->sr_err = bdb_next_id( op->o_bd, &eid );
 338                 if( rs->sr_err != 0 ) {
 339                         Debug( LDAP_DEBUG_TRACE,
 340                                 LDAP_XSTRING(bdb_add) ": next_id failed (%d)\n",
 341                                 rs->sr_err, 0, 0 );
 342                         rs->sr_err = LDAP_OTHER;
 343                         rs->sr_text = "internal error";
 344                         goto return_results;
 345                 }
 346                 op->ora_e->e_id = eid;
 347         }
 348
 349         /* nested transaction */
 350         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, &lt2,
 351                 bdb->bi_db_opflags );
 352         rs->sr_text = NULL;
 353         if( rs->sr_err != 0 ) {
 354                 Debug( LDAP_DEBUG_TRACE,
 355                         LDAP_XSTRING(bdb_add) ": txn_begin(2) failed: "
 356                         "%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
 357                 rs->sr_err = LDAP_OTHER;
 358                 rs->sr_text = "internal error";
 359                 goto return_results;
 360         }
 361
 362         /* dn2id index */
 363         rs->sr_err = bdb_dn2id_add( op, lt2, ei, op->ora_e );
 364         if ( rs->sr_err != 0 ) {
 365                 Debug( LDAP_DEBUG_TRACE,
 366                         LDAP_XSTRING(bdb_add) ": dn2id_add failed: %s (%d)\n",
 367                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 368
 369                 switch( rs->sr_err ) {
 370                 case DB_LOCK_DEADLOCK:
 371                 case DB_LOCK_NOTGRANTED:
 372                         goto retry;
 373                 case DB_KEYEXIST:
 374                         rs->sr_err = LDAP_ALREADY_EXISTS;
 375                         break;
 376                 default:
 377                         rs->sr_err = LDAP_OTHER;
 378                 }
 379                 goto return_results;
 380         }
 381
 382         /* attribute indexes */
 383         rs->sr_err = bdb_index_entry_add( op, lt2, op->ora_e );
 384         if ( rs->sr_err != LDAP_SUCCESS ) {
 385                 Debug( LDAP_DEBUG_TRACE,
 386                         LDAP_XSTRING(bdb_add) ": index_entry_add failed\n",
 387                         0, 0, 0 );
 388                 switch( rs->sr_err ) {
 389                 case DB_LOCK_DEADLOCK:
 390                 case DB_LOCK_NOTGRANTED:
 391                         goto retry;
 392                 default:
 393                         rs->sr_err = LDAP_OTHER;
 394                 }
 395                 rs->sr_text = "index generation failed";
 396                 goto return_results;
 397         }
 398
 399         /* id2entry index */
 400         rs->sr_err = bdb_id2entry_add( op->o_bd, lt2, op->ora_e );
 401         if ( rs->sr_err != 0 ) {
 402                 Debug( LDAP_DEBUG_TRACE,
 403                         LDAP_XSTRING(bdb_add) ": id2entry_add failed\n",
 404                         0, 0, 0 );
 405                 switch( rs->sr_err ) {
 406                 case DB_LOCK_DEADLOCK:
 407                 case DB_LOCK_NOTGRANTED:
 408                         goto retry;
 409                 default:
 410                         rs->sr_err = LDAP_OTHER;
 411                 }
 412                 rs->sr_text = "entry store failed";
 413                 goto return_results;
 414         }
 415
 416         if ( TXN_COMMIT( lt2, 0 ) != 0 ) {
 417                 rs->sr_err = LDAP_OTHER;
 418                 rs->sr_text = "txn_commit(2) failed";
 419                 goto return_results;
 420         }
 421
 422         /* post-read */
 423         if( op->o_postread ) {
 424                 if( postread_ctrl == NULL ) {
 425                         postread_ctrl = &ctrls[num_ctrls++];
 426                         ctrls[num_ctrls] = NULL;
 427                 }
 428                 if ( slap_read_controls( op, rs, op->ora_e,
 429                         &slap_post_read_bv, postread_ctrl ) )
 430                 {
 431                         Debug( LDAP_DEBUG_TRACE,
 432                                 "<=- " LDAP_XSTRING(bdb_add) ": post-read "
 433                                 "failed!\n", 0, 0, 0 );
 434                         if ( op->o_postread & SLAP_CONTROL_CRITICAL ) {
 435                                 /* FIXME: is it correct to abort
 436                                  * operation if control fails? */
 437                                 goto return_results;
 438                         }
 439                 }
 440         }
 441
 442         if ( op->o_noop ) {
 443                 if (( rs->sr_err=TXN_ABORT( ltid )) != 0 ) {
 444                         rs->sr_text = "txn_abort (no-op) failed";
 445                 } else {
 446                         rs->sr_err = LDAP_X_NO_OPERATION;
 447                         ltid = NULL;
 448                         goto return_results;
 449                 }
 450
 451         } else {
 452                 struct berval nrdn;
 453
 454                 /* pick the RDN if not suffix; otherwise pick the entire DN */
 455                 if (pdn.bv_len) {
 456                         nrdn.bv_val = op->ora_e->e_nname.bv_val;
 457                         nrdn.bv_len = pdn.bv_val - op->ora_e->e_nname.bv_val - 1;
 458                 } else {
 459                         nrdn = op->ora_e->e_nname;
 460                 }
 461
 462                 /* Use the reader txn here, outside the add txn */
 463                 bdb_cache_add( bdb, ei, op->ora_e, &nrdn, rtxn, &lock );
 464
 465                 if(( rs->sr_err=TXN_COMMIT( ltid, 0 )) != 0 ) {
 466                         rs->sr_text = "txn_commit failed";
 467                 } else {
 468                         rs->sr_err = LDAP_SUCCESS;
 469                 }
 470         }
 471
 472         ltid = NULL;
 473         LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 474         opinfo.boi_oe.oe_key = NULL;
 475
 476         if ( rs->sr_err != LDAP_SUCCESS ) {
 477                 Debug( LDAP_DEBUG_TRACE,
 478                         LDAP_XSTRING(bdb_add) ": %s : %s (%d)\n",
 479                         rs->sr_text, db_strerror(rs->sr_err), rs->sr_err );
 480                 rs->sr_err = LDAP_OTHER;
 481                 goto return_results;
 482         }
 483
 484         Debug(LDAP_DEBUG_TRACE,
 485                 LDAP_XSTRING(bdb_add) ": added%s id=%08lx dn=\"%s\"\n",
 486                 op->o_noop ? " (no-op)" : "",
 487                 op->ora_e->e_id, op->ora_e->e_dn );
 488
 489         rs->sr_text = NULL;
 490         if( num_ctrls ) rs->sr_ctrls = ctrls;
 491
 492 return_results:
 493         success = rs->sr_err;
 494         send_ldap_result( op, rs );
 495
 496         if( ltid != NULL ) {
 497                 TXN_ABORT( ltid );
 498         }
 499         if ( opinfo.boi_oe.oe_key ) {
 500                 LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 501         }
 502
 503         if( success == LDAP_SUCCESS ) {
 504                 /* We own the entry now, and it can be purged at will
 505                  * Check to make sure it's the same entry we entered with.
 506                  * Possibly a callback may have mucked with it, although
 507                  * in general callbacks should treat the entry as read-only.
 508                  */
 509                 bdb_cache_return_entry_r( bdb, oe, &lock );
 510                 if ( op->ora_e == oe )
 511                         op->ora_e = NULL;
 512
 513                 if ( bdb->bi_txn_cp_kbyte ) {
 514                         TXN_CHECKPOINT( bdb->bi_dbenv,
 515                                 bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 516                 }
 517         }
 518
 519         slap_graduate_commit_csn( op );
 520
 521         if( postread_ctrl != NULL && (*postread_ctrl) != NULL ) {
 522                 slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 523                 slap_sl_free( *postread_ctrl, op->o_tmpmemctx );
 524         }
 525         return rs->sr_err;
 526 }