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 2000-2011 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;
  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         if( 0 ) {
 125 retry:  /* transaction retry */
 126                 if( p ) {
 127                         /* free parent and reader lock */
 128                         if ( p != (Entry *)&slap_entry_root ) {
 129                                 bdb_unlocked_cache_return_entry_r( bdb, p );
 130                         }
 131                         p = NULL;
 132                 }
 133                 rs->sr_err = TXN_ABORT( ltid );
 134                 ltid = NULL;
 135                 LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 136                 opinfo.boi_oe.oe_key = NULL;
 137                 op->o_do_not_cache = opinfo.boi_acl_cache;
 138                 if( rs->sr_err != 0 ) {
 139                         rs->sr_err = LDAP_OTHER;
 140                         rs->sr_text = "internal error";
 141                         goto return_results;
 142                 }
 143                 if ( op->o_abandon ) {
 144                         rs->sr_err = SLAPD_ABANDON;
 145                         goto return_results;
 146                 }
 147                 bdb_trans_backoff( ++num_retries );
 148         }
 149
 150         /* begin transaction */
 151         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid,
 152                 bdb->bi_db_opflags );
 153         rs->sr_text = NULL;
 154         if( rs->sr_err != 0 ) {
 155                 Debug( LDAP_DEBUG_TRACE,
 156                         LDAP_XSTRING(bdb_add) ": txn_begin failed: %s (%d)\n",
 157                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 158                 rs->sr_err = LDAP_OTHER;
 159                 rs->sr_text = "internal error";
 160                 goto return_results;
 161         }
 162
 163         opinfo.boi_oe.oe_key = bdb;
 164         opinfo.boi_txn = ltid;
 165         opinfo.boi_err = 0;
 166         opinfo.boi_acl_cache = op->o_do_not_cache;
 167         LDAP_SLIST_INSERT_HEAD( &op->o_extra, &opinfo.boi_oe, oe_next );
 168
 169         /*
 170          * Get the parent dn and see if the corresponding entry exists.
 171          */
 172         if ( be_issuffix( op->o_bd, &op->ora_e->e_nname ) ) {
 173                 pdn = slap_empty_bv;
 174         } else {
 175                 dnParent( &op->ora_e->e_nname, &pdn );
 176         }
 177
 178         /* get entry or parent */
 179         rs->sr_err = bdb_dn2entry( op, ltid, &op->ora_e->e_nname, &ei,
 180                 1, &lock );
 181         switch( rs->sr_err ) {
 182         case 0:
 183                 rs->sr_err = LDAP_ALREADY_EXISTS;
 184                 goto return_results;
 185         case DB_NOTFOUND:
 186                 break;
 187         case DB_LOCK_DEADLOCK:
 188         case DB_LOCK_NOTGRANTED:
 189                 goto retry;
 190         case LDAP_BUSY:
 191                 rs->sr_text = "ldap server busy";
 192                 goto return_results;
 193         default:
 194                 rs->sr_err = LDAP_OTHER;
 195                 rs->sr_text = "internal error";
 196                 goto return_results;
 197         }
 198
 199         p = ei->bei_e;
 200         if ( !p )
 201                 p = (Entry *)&slap_entry_root;
 202
 203         if ( !bvmatch( &pdn, &p->e_nname ) ) {
 204                 rs->sr_matched = ber_strdup_x( p->e_name.bv_val,
 205                         op->o_tmpmemctx );
 206                 rs->sr_ref = is_entry_referral( p )
 207                         ? get_entry_referrals( op, p )
 208                         : NULL;
 209                 if ( p != (Entry *)&slap_entry_root )
 210                         bdb_unlocked_cache_return_entry_r( bdb, p );
 211                 p = NULL;
 212                 Debug( LDAP_DEBUG_TRACE,
 213                         LDAP_XSTRING(bdb_add) ": parent "
 214                         "does not exist\n", 0, 0, 0 );
 215
 216                 rs->sr_err = LDAP_REFERRAL;
 217                 rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
 218                 goto return_results;
 219         }
 220
 221         rs->sr_err = access_allowed( op, p,
 222                 children, NULL, ACL_WADD, NULL );
 223
 224         if ( ! rs->sr_err ) {
 225                 switch( opinfo.boi_err ) {
 226                 case DB_LOCK_DEADLOCK:
 227                 case DB_LOCK_NOTGRANTED:
 228                         goto retry;
 229                 }
 230
 231                 if ( p != (Entry *)&slap_entry_root )
 232                         bdb_unlocked_cache_return_entry_r( bdb, p );
 233                 p = NULL;
 234
 235                 Debug( LDAP_DEBUG_TRACE,
 236                         LDAP_XSTRING(bdb_add) ": no write access to parent\n",
 237                         0, 0, 0 );
 238                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 239                 rs->sr_text = "no write access to parent";
 240                 goto return_results;;
 241         }
 242
 243         if ( p != (Entry *)&slap_entry_root ) {
 244                 if ( is_entry_subentry( p ) ) {
 245                         bdb_unlocked_cache_return_entry_r( bdb, p );
 246                         p = NULL;
 247                         /* parent is a subentry, don't allow add */
 248                         Debug( LDAP_DEBUG_TRACE,
 249                                 LDAP_XSTRING(bdb_add) ": parent is subentry\n",
 250                                 0, 0, 0 );
 251                         rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 252                         rs->sr_text = "parent is a subentry";
 253                         goto return_results;;
 254                 }
 255
 256                 if ( is_entry_alias( p ) ) {
 257                         bdb_unlocked_cache_return_entry_r( bdb, p );
 258                         p = NULL;
 259                         /* parent is an alias, don't allow add */
 260                         Debug( LDAP_DEBUG_TRACE,
 261                                 LDAP_XSTRING(bdb_add) ": parent is alias\n",
 262                                 0, 0, 0 );
 263                         rs->sr_err = LDAP_ALIAS_PROBLEM;
 264                         rs->sr_text = "parent is an alias";
 265                         goto return_results;;
 266                 }
 267
 268                 if ( is_entry_referral( p ) ) {
 269                         /* parent is a referral, don't allow add */
 270                         rs->sr_matched = ber_strdup_x( p->e_name.bv_val,
 271                                 op->o_tmpmemctx );
 272                         rs->sr_ref = get_entry_referrals( op, p );
 273                         bdb_unlocked_cache_return_entry_r( bdb, p );
 274                         p = NULL;
 275                         Debug( LDAP_DEBUG_TRACE,
 276                                 LDAP_XSTRING(bdb_add) ": parent is referral\n",
 277                                 0, 0, 0 );
 278
 279                         rs->sr_err = LDAP_REFERRAL;
 280                         rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
 281                         goto return_results;
 282                 }
 283
 284         }
 285
 286         if ( subentry ) {
 287                 /* FIXME: */
 288                 /* parent must be an administrative point of the required kind */
 289         }
 290
 291         /* free parent and reader lock */
 292         if ( p != (Entry *)&slap_entry_root ) {
 293                 if ( p->e_nname.bv_len ) {
 294                         struct berval ppdn;
 295
 296                         /* ITS#5326: use parent's DN if differs from provided one */
 297                         dnParent( &op->ora_e->e_name, &ppdn );
 298                         if ( !dn_match( &p->e_name, &ppdn ) ) {
 299                                 struct berval rdn;
 300                                 struct berval newdn;
 301
 302                                 dnRdn( &op->ora_e->e_name, &rdn );
 303
 304                                 build_new_dn( &newdn, &p->e_name, &rdn, NULL );
 305                                 if ( op->ora_e->e_name.bv_val != op->o_req_dn.bv_val )
 306                                         ber_memfree( op->ora_e->e_name.bv_val );
 307                                 op->ora_e->e_name = newdn;
 308
 309                                 /* FIXME: should check whether
 310                                  * dnNormalize(newdn) == e->e_nname ... */
 311                         }
 312                 }
 313
 314                 bdb_unlocked_cache_return_entry_r( bdb, p );
 315         }
 316         p = NULL;
 317
 318         rs->sr_err = access_allowed( op, op->ora_e,
 319                 entry, NULL, ACL_WADD, NULL );
 320
 321         if ( ! rs->sr_err ) {
 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 entry\n",
 330                         0, 0, 0 );
 331                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 332                 rs->sr_text = "no write access to entry";
 333                 goto return_results;;
 334         }
 335
 336         /*
 337          * Check ACL for attribute write access
 338          */
 339         if (!acl_check_modlist(op, oe, op->ora_modlist)) {
 340                 switch( opinfo.boi_err ) {
 341                 case DB_LOCK_DEADLOCK:
 342                 case DB_LOCK_NOTGRANTED:
 343                         goto retry;
 344                 }
 345
 346                 Debug( LDAP_DEBUG_TRACE,
 347                         LDAP_XSTRING(bdb_add) ": no write access to attribute\n",
 348                         0, 0, 0 );
 349                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 350                 rs->sr_text = "no write access to attribute";
 351                 goto return_results;;
 352         }
 353
 354         if ( eid == NOID ) {
 355                 rs->sr_err = bdb_next_id( op->o_bd, &eid );
 356                 if( rs->sr_err != 0 ) {
 357                         Debug( LDAP_DEBUG_TRACE,
 358                                 LDAP_XSTRING(bdb_add) ": next_id failed (%d)\n",
 359                                 rs->sr_err, 0, 0 );
 360                         rs->sr_err = LDAP_OTHER;
 361                         rs->sr_text = "internal error";
 362                         goto return_results;
 363                 }
 364                 op->ora_e->e_id = eid;
 365         }
 366
 367         /* nested transaction */
 368         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, &lt2,
 369                 bdb->bi_db_opflags );
 370         rs->sr_text = NULL;
 371         if( rs->sr_err != 0 ) {
 372                 Debug( LDAP_DEBUG_TRACE,
 373                         LDAP_XSTRING(bdb_add) ": txn_begin(2) failed: "
 374                         "%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
 375                 rs->sr_err = LDAP_OTHER;
 376                 rs->sr_text = "internal error";
 377                 goto return_results;
 378         }
 379
 380         /* dn2id index */
 381         rs->sr_err = bdb_dn2id_add( op, lt2, ei, op->ora_e );
 382         if ( rs->sr_err != 0 ) {
 383                 Debug( LDAP_DEBUG_TRACE,
 384                         LDAP_XSTRING(bdb_add) ": dn2id_add failed: %s (%d)\n",
 385                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 386
 387                 switch( rs->sr_err ) {
 388                 case DB_LOCK_DEADLOCK:
 389                 case DB_LOCK_NOTGRANTED:
 390                         goto retry;
 391                 case DB_KEYEXIST:
 392                         rs->sr_err = LDAP_ALREADY_EXISTS;
 393                         break;
 394                 default:
 395                         rs->sr_err = LDAP_OTHER;
 396                 }
 397                 goto return_results;
 398         }
 399
 400         /* attribute indexes */
 401         rs->sr_err = bdb_index_entry_add( op, lt2, op->ora_e );
 402         if ( rs->sr_err != LDAP_SUCCESS ) {
 403                 Debug( LDAP_DEBUG_TRACE,
 404                         LDAP_XSTRING(bdb_add) ": index_entry_add failed\n",
 405                         0, 0, 0 );
 406                 switch( rs->sr_err ) {
 407                 case DB_LOCK_DEADLOCK:
 408                 case DB_LOCK_NOTGRANTED:
 409                         goto retry;
 410                 default:
 411                         rs->sr_err = LDAP_OTHER;
 412                 }
 413                 rs->sr_text = "index generation failed";
 414                 goto return_results;
 415         }
 416
 417         /* id2entry index */
 418         rs->sr_err = bdb_id2entry_add( op->o_bd, lt2, op->ora_e );
 419         if ( rs->sr_err != 0 ) {
 420                 Debug( LDAP_DEBUG_TRACE,
 421                         LDAP_XSTRING(bdb_add) ": id2entry_add failed\n",
 422                         0, 0, 0 );
 423                 switch( rs->sr_err ) {
 424                 case DB_LOCK_DEADLOCK:
 425                 case DB_LOCK_NOTGRANTED:
 426                         goto retry;
 427                 default:
 428                         rs->sr_err = LDAP_OTHER;
 429                 }
 430                 rs->sr_text = "entry store failed";
 431                 goto return_results;
 432         }
 433
 434         if ( TXN_COMMIT( lt2, 0 ) != 0 ) {
 435                 rs->sr_err = LDAP_OTHER;
 436                 rs->sr_text = "txn_commit(2) failed";
 437                 goto return_results;
 438         }
 439
 440         /* post-read */
 441         if( op->o_postread ) {
 442                 if( postread_ctrl == NULL ) {
 443                         postread_ctrl = &ctrls[num_ctrls++];
 444                         ctrls[num_ctrls] = NULL;
 445                 }
 446                 if ( slap_read_controls( op, rs, op->ora_e,
 447                         &slap_post_read_bv, postread_ctrl ) )
 448                 {
 449                         Debug( LDAP_DEBUG_TRACE,
 450                                 "<=- " LDAP_XSTRING(bdb_add) ": post-read "
 451                                 "failed!\n", 0, 0, 0 );
 452                         if ( op->o_postread & SLAP_CONTROL_CRITICAL ) {
 453                                 /* FIXME: is it correct to abort
 454                                  * operation if control fails? */
 455                                 goto return_results;
 456                         }
 457                 }
 458         }
 459
 460         if ( op->o_noop ) {
 461                 if (( rs->sr_err=TXN_ABORT( ltid )) != 0 ) {
 462                         rs->sr_text = "txn_abort (no-op) failed";
 463                 } else {
 464                         rs->sr_err = LDAP_X_NO_OPERATION;
 465                         ltid = NULL;
 466                         goto return_results;
 467                 }
 468
 469         } else {
 470                 struct berval nrdn;
 471
 472                 /* pick the RDN if not suffix; otherwise pick the entire DN */
 473                 if (pdn.bv_len) {
 474                         nrdn.bv_val = op->ora_e->e_nname.bv_val;
 475                         nrdn.bv_len = pdn.bv_val - op->ora_e->e_nname.bv_val - 1;
 476                 } else {
 477                         nrdn = op->ora_e->e_nname;
 478                 }
 479
 480                 bdb_cache_add( bdb, ei, op->ora_e, &nrdn, ltid, &lock );
 481
 482                 if(( rs->sr_err=TXN_COMMIT( ltid, 0 )) != 0 ) {
 483                         rs->sr_text = "txn_commit failed";
 484                 } else {
 485                         rs->sr_err = LDAP_SUCCESS;
 486                 }
 487         }
 488
 489         ltid = NULL;
 490         LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 491         opinfo.boi_oe.oe_key = NULL;
 492
 493         if ( rs->sr_err != LDAP_SUCCESS ) {
 494                 Debug( LDAP_DEBUG_TRACE,
 495                         LDAP_XSTRING(bdb_add) ": %s : %s (%d)\n",
 496                         rs->sr_text, db_strerror(rs->sr_err), rs->sr_err );
 497                 rs->sr_err = LDAP_OTHER;
 498                 goto return_results;
 499         }
 500
 501         Debug(LDAP_DEBUG_TRACE,
 502                 LDAP_XSTRING(bdb_add) ": added%s id=%08lx dn=\"%s\"\n",
 503                 op->o_noop ? " (no-op)" : "",
 504                 op->ora_e->e_id, op->ora_e->e_dn );
 505
 506         rs->sr_text = NULL;
 507         if( num_ctrls ) rs->sr_ctrls = ctrls;
 508
 509 return_results:
 510         success = rs->sr_err;
 511         send_ldap_result( op, rs );
 512
 513         if( ltid != NULL ) {
 514                 TXN_ABORT( ltid );
 515         }
 516         if ( opinfo.boi_oe.oe_key ) {
 517                 LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 518         }
 519
 520         if( success == LDAP_SUCCESS ) {
 521                 /* We own the entry now, and it can be purged at will
 522                  * Check to make sure it's the same entry we entered with.
 523                  * Possibly a callback may have mucked with it, although
 524                  * in general callbacks should treat the entry as read-only.
 525                  */
 526                 bdb_cache_deref( oe->e_private );
 527                 if ( op->ora_e == oe )
 528                         op->ora_e = NULL;
 529
 530                 if ( bdb->bi_txn_cp_kbyte ) {
 531                         TXN_CHECKPOINT( bdb->bi_dbenv,
 532                                 bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 533                 }
 534         }
 535
 536         slap_graduate_commit_csn( op );
 537
 538         if( postread_ctrl != NULL && (*postread_ctrl) != NULL ) {
 539                 slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 540                 slap_sl_free( *postread_ctrl, op->o_tmpmemctx );
 541         }
 542         return rs->sr_err;
 543 }