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 2000-2014 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         Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(bdb_add) ": txn1 id: %x\n",
 163                 ltid->id(ltid), 0, 0 );
 164
 165         opinfo.boi_oe.oe_key = bdb;
 166         opinfo.boi_txn = ltid;
 167         opinfo.boi_err = 0;
 168         opinfo.boi_acl_cache = op->o_do_not_cache;
 169         LDAP_SLIST_INSERT_HEAD( &op->o_extra, &opinfo.boi_oe, oe_next );
 170
 171         /*
 172          * Get the parent dn and see if the corresponding entry exists.
 173          */
 174         if ( be_issuffix( op->o_bd, &op->ora_e->e_nname ) ) {
 175                 pdn = slap_empty_bv;
 176         } else {
 177                 dnParent( &op->ora_e->e_nname, &pdn );
 178         }
 179
 180         /* get entry or parent */
 181         rs->sr_err = bdb_dn2entry( op, ltid, &op->ora_e->e_nname, &ei,
 182                 1, &lock );
 183         switch( rs->sr_err ) {
 184         case 0:
 185                 rs->sr_err = LDAP_ALREADY_EXISTS;
 186                 goto return_results;
 187         case DB_NOTFOUND:
 188                 break;
 189         case DB_LOCK_DEADLOCK:
 190         case DB_LOCK_NOTGRANTED:
 191                 goto retry;
 192         case LDAP_BUSY:
 193                 rs->sr_text = "ldap server busy";
 194                 goto return_results;
 195         default:
 196                 rs->sr_err = LDAP_OTHER;
 197                 rs->sr_text = "internal error";
 198                 goto return_results;
 199         }
 200
 201         p = ei->bei_e;
 202         if ( !p )
 203                 p = (Entry *)&slap_entry_root;
 204
 205         if ( !bvmatch( &pdn, &p->e_nname ) ) {
 206                 rs->sr_matched = ber_strdup_x( p->e_name.bv_val,
 207                         op->o_tmpmemctx );
 208                 rs->sr_ref = is_entry_referral( p )
 209                         ? get_entry_referrals( op, p )
 210                         : NULL;
 211                 if ( p != (Entry *)&slap_entry_root )
 212                         bdb_unlocked_cache_return_entry_r( bdb, p );
 213                 p = NULL;
 214                 Debug( LDAP_DEBUG_TRACE,
 215                         LDAP_XSTRING(bdb_add) ": parent "
 216                         "does not exist\n", 0, 0, 0 );
 217
 218                 rs->sr_err = LDAP_REFERRAL;
 219                 rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
 220                 goto return_results;
 221         }
 222
 223         rs->sr_err = access_allowed( op, p,
 224                 children, NULL, ACL_WADD, NULL );
 225
 226         if ( ! rs->sr_err ) {
 227                 switch( opinfo.boi_err ) {
 228                 case DB_LOCK_DEADLOCK:
 229                 case DB_LOCK_NOTGRANTED:
 230                         goto retry;
 231                 }
 232
 233                 if ( p != (Entry *)&slap_entry_root )
 234                         bdb_unlocked_cache_return_entry_r( bdb, p );
 235                 p = NULL;
 236
 237                 Debug( LDAP_DEBUG_TRACE,
 238                         LDAP_XSTRING(bdb_add) ": no write access to parent\n",
 239                         0, 0, 0 );
 240                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 241                 rs->sr_text = "no write access to parent";
 242                 goto return_results;;
 243         }
 244
 245         if ( p != (Entry *)&slap_entry_root ) {
 246                 if ( is_entry_subentry( p ) ) {
 247                         bdb_unlocked_cache_return_entry_r( bdb, p );
 248                         p = NULL;
 249                         /* parent is a subentry, don't allow add */
 250                         Debug( LDAP_DEBUG_TRACE,
 251                                 LDAP_XSTRING(bdb_add) ": parent is subentry\n",
 252                                 0, 0, 0 );
 253                         rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 254                         rs->sr_text = "parent is a subentry";
 255                         goto return_results;;
 256                 }
 257
 258                 if ( is_entry_alias( p ) ) {
 259                         bdb_unlocked_cache_return_entry_r( bdb, p );
 260                         p = NULL;
 261                         /* parent is an alias, don't allow add */
 262                         Debug( LDAP_DEBUG_TRACE,
 263                                 LDAP_XSTRING(bdb_add) ": parent is alias\n",
 264                                 0, 0, 0 );
 265                         rs->sr_err = LDAP_ALIAS_PROBLEM;
 266                         rs->sr_text = "parent is an alias";
 267                         goto return_results;;
 268                 }
 269
 270                 if ( is_entry_referral( p ) ) {
 271                         /* parent is a referral, don't allow add */
 272                         rs->sr_matched = ber_strdup_x( p->e_name.bv_val,
 273                                 op->o_tmpmemctx );
 274                         rs->sr_ref = get_entry_referrals( op, p );
 275                         bdb_unlocked_cache_return_entry_r( bdb, p );
 276                         p = NULL;
 277                         Debug( LDAP_DEBUG_TRACE,
 278                                 LDAP_XSTRING(bdb_add) ": parent is referral\n",
 279                                 0, 0, 0 );
 280
 281                         rs->sr_err = LDAP_REFERRAL;
 282                         rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
 283                         goto return_results;
 284                 }
 285
 286         }
 287
 288         if ( subentry ) {
 289                 /* FIXME: */
 290                 /* parent must be an administrative point of the required kind */
 291         }
 292
 293         /* free parent and reader lock */
 294         if ( p != (Entry *)&slap_entry_root ) {
 295                 if ( p->e_nname.bv_len ) {
 296                         struct berval ppdn;
 297
 298                         /* ITS#5326: use parent's DN if differs from provided one */
 299                         dnParent( &op->ora_e->e_name, &ppdn );
 300                         if ( !dn_match( &p->e_name, &ppdn ) ) {
 301                                 struct berval rdn;
 302                                 struct berval newdn;
 303
 304                                 dnRdn( &op->ora_e->e_name, &rdn );
 305
 306                                 build_new_dn( &newdn, &p->e_name, &rdn, NULL );
 307                                 if ( op->ora_e->e_name.bv_val != op->o_req_dn.bv_val )
 308                                         ber_memfree( op->ora_e->e_name.bv_val );
 309                                 op->ora_e->e_name = newdn;
 310
 311                                 /* FIXME: should check whether
 312                                  * dnNormalize(newdn) == e->e_nname ... */
 313                         }
 314                 }
 315
 316                 bdb_unlocked_cache_return_entry_r( bdb, p );
 317         }
 318         p = NULL;
 319
 320         rs->sr_err = access_allowed( op, op->ora_e,
 321                 entry, NULL, ACL_WADD, NULL );
 322
 323         if ( ! rs->sr_err ) {
 324                 switch( opinfo.boi_err ) {
 325                 case DB_LOCK_DEADLOCK:
 326                 case DB_LOCK_NOTGRANTED:
 327                         goto retry;
 328                 }
 329
 330                 Debug( LDAP_DEBUG_TRACE,
 331                         LDAP_XSTRING(bdb_add) ": no write access to entry\n",
 332                         0, 0, 0 );
 333                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 334                 rs->sr_text = "no write access to entry";
 335                 goto return_results;;
 336         }
 337
 338         /*
 339          * Check ACL for attribute write access
 340          */
 341         if (!acl_check_modlist(op, oe, op->ora_modlist)) {
 342                 switch( opinfo.boi_err ) {
 343                 case DB_LOCK_DEADLOCK:
 344                 case DB_LOCK_NOTGRANTED:
 345                         goto retry;
 346                 }
 347
 348                 Debug( LDAP_DEBUG_TRACE,
 349                         LDAP_XSTRING(bdb_add) ": no write access to attribute\n",
 350                         0, 0, 0 );
 351                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 352                 rs->sr_text = "no write access to attribute";
 353                 goto return_results;;
 354         }
 355
 356         if ( eid == NOID ) {
 357                 rs->sr_err = bdb_next_id( op->o_bd, &eid );
 358                 if( rs->sr_err != 0 ) {
 359                         Debug( LDAP_DEBUG_TRACE,
 360                                 LDAP_XSTRING(bdb_add) ": next_id failed (%d)\n",
 361                                 rs->sr_err, 0, 0 );
 362                         rs->sr_err = LDAP_OTHER;
 363                         rs->sr_text = "internal error";
 364                         goto return_results;
 365                 }
 366                 op->ora_e->e_id = eid;
 367         }
 368
 369         /* nested transaction */
 370         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, &lt2,
 371                 bdb->bi_db_opflags );
 372         rs->sr_text = NULL;
 373         if( rs->sr_err != 0 ) {
 374                 Debug( LDAP_DEBUG_TRACE,
 375                         LDAP_XSTRING(bdb_add) ": txn_begin(2) failed: "
 376                         "%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
 377                 rs->sr_err = LDAP_OTHER;
 378                 rs->sr_text = "internal error";
 379                 goto return_results;
 380         }
 381         Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(bdb_add) ": txn2 id: %x\n",
 382                 lt2->id(lt2), 0, 0 );
 383
 384         /* dn2id index */
 385         rs->sr_err = bdb_dn2id_add( op, lt2, ei, op->ora_e );
 386         if ( rs->sr_err != 0 ) {
 387                 Debug( LDAP_DEBUG_TRACE,
 388                         LDAP_XSTRING(bdb_add) ": dn2id_add failed: %s (%d)\n",
 389                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 390
 391                 switch( rs->sr_err ) {
 392                 case DB_LOCK_DEADLOCK:
 393                 case DB_LOCK_NOTGRANTED:
 394                         goto retry;
 395                 case DB_KEYEXIST:
 396                         rs->sr_err = LDAP_ALREADY_EXISTS;
 397                         break;
 398                 default:
 399                         rs->sr_err = LDAP_OTHER;
 400                 }
 401                 goto return_results;
 402         }
 403
 404         /* attribute indexes */
 405         rs->sr_err = bdb_index_entry_add( op, lt2, op->ora_e );
 406         if ( rs->sr_err != LDAP_SUCCESS ) {
 407                 Debug( LDAP_DEBUG_TRACE,
 408                         LDAP_XSTRING(bdb_add) ": index_entry_add failed\n",
 409                         0, 0, 0 );
 410                 switch( rs->sr_err ) {
 411                 case DB_LOCK_DEADLOCK:
 412                 case DB_LOCK_NOTGRANTED:
 413                         goto retry;
 414                 default:
 415                         rs->sr_err = LDAP_OTHER;
 416                 }
 417                 rs->sr_text = "index generation failed";
 418                 goto return_results;
 419         }
 420
 421         /* id2entry index */
 422         rs->sr_err = bdb_id2entry_add( op->o_bd, lt2, op->ora_e );
 423         if ( rs->sr_err != 0 ) {
 424                 Debug( LDAP_DEBUG_TRACE,
 425                         LDAP_XSTRING(bdb_add) ": id2entry_add failed\n",
 426                         0, 0, 0 );
 427                 switch( rs->sr_err ) {
 428                 case DB_LOCK_DEADLOCK:
 429                 case DB_LOCK_NOTGRANTED:
 430                         goto retry;
 431                 default:
 432                         rs->sr_err = LDAP_OTHER;
 433                 }
 434                 rs->sr_text = "entry store failed";
 435                 goto return_results;
 436         }
 437
 438         if ( TXN_COMMIT( lt2, 0 ) != 0 ) {
 439                 rs->sr_err = LDAP_OTHER;
 440                 rs->sr_text = "txn_commit(2) failed";
 441                 goto return_results;
 442         }
 443
 444         /* post-read */
 445         if( op->o_postread ) {
 446                 if( postread_ctrl == NULL ) {
 447                         postread_ctrl = &ctrls[num_ctrls++];
 448                         ctrls[num_ctrls] = NULL;
 449                 }
 450                 if ( slap_read_controls( op, rs, op->ora_e,
 451                         &slap_post_read_bv, postread_ctrl ) )
 452                 {
 453                         Debug( LDAP_DEBUG_TRACE,
 454                                 "<=- " LDAP_XSTRING(bdb_add) ": post-read "
 455                                 "failed!\n", 0, 0, 0 );
 456                         if ( op->o_postread & SLAP_CONTROL_CRITICAL ) {
 457                                 /* FIXME: is it correct to abort
 458                                  * operation if control fails? */
 459                                 goto return_results;
 460                         }
 461                 }
 462         }
 463
 464         if ( op->o_noop ) {
 465                 if (( rs->sr_err=TXN_ABORT( ltid )) != 0 ) {
 466                         rs->sr_text = "txn_abort (no-op) failed";
 467                 } else {
 468                         rs->sr_err = LDAP_X_NO_OPERATION;
 469                         ltid = NULL;
 470                         goto return_results;
 471                 }
 472
 473         } else {
 474                 struct berval nrdn;
 475
 476                 /* pick the RDN if not suffix; otherwise pick the entire DN */
 477                 if (pdn.bv_len) {
 478                         nrdn.bv_val = op->ora_e->e_nname.bv_val;
 479                         nrdn.bv_len = pdn.bv_val - op->ora_e->e_nname.bv_val - 1;
 480                 } else {
 481                         nrdn = op->ora_e->e_nname;
 482                 }
 483
 484                 bdb_cache_add( bdb, ei, op->ora_e, &nrdn, ltid, &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
 517         if( ltid != NULL ) {
 518                 TXN_ABORT( ltid );
 519         }
 520         if ( opinfo.boi_oe.oe_key ) {
 521                 LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 522         }
 523
 524         if( success == LDAP_SUCCESS ) {
 525                 /* We own the entry now, and it can be purged at will
 526                  * Check to make sure it's the same entry we entered with.
 527                  * Possibly a callback may have mucked with it, although
 528                  * in general callbacks should treat the entry as read-only.
 529                  */
 530                 bdb_cache_deref( oe->e_private );
 531                 if ( op->ora_e == oe )
 532                         op->ora_e = NULL;
 533
 534                 if ( bdb->bi_txn_cp_kbyte ) {
 535                         TXN_CHECKPOINT( bdb->bi_dbenv,
 536                                 bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 537                 }
 538         }
 539
 540         slap_graduate_commit_csn( op );
 541
 542         if( postread_ctrl != NULL && (*postread_ctrl) != NULL ) {
 543                 slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 544                 slap_sl_free( *postread_ctrl, op->o_tmpmemctx );
 545         }
 546         return rs->sr_err;
 547 }