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 2000-2018 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         Debug(LDAP_DEBUG_ARGS, "==> " LDAP_XSTRING(bdb_add) ": %s\n",
  49                 op->ora_e->e_name.bv_val, 0, 0);
  50
  51 #ifdef LDAP_X_TXN
  52         if( op->o_txnSpec && txn_preop( op, rs ))
  53                 return rs->sr_err;
  54 #endif
  55
  56         ctrls[num_ctrls] = 0;
  57
  58         /* check entry's schema */
  59         rs->sr_err = entry_schema_check( op, op->ora_e, NULL,
  60                 get_relax(op), 1, NULL, &rs->sr_text, textbuf, textlen );
  61         if ( rs->sr_err != LDAP_SUCCESS ) {
  62                 Debug( LDAP_DEBUG_TRACE,
  63                         LDAP_XSTRING(bdb_add) ": entry failed schema check: "
  64                         "%s (%d)\n", rs->sr_text, rs->sr_err, 0 );
  65                 goto return_results;
  66         }
  67
  68         /* add opattrs to shadow as well, only missing attrs will actually
  69          * be added; helps compatibility with older OL versions */
  70         rs->sr_err = slap_add_opattrs( op, &rs->sr_text, textbuf, textlen, 1 );
  71         if ( rs->sr_err != LDAP_SUCCESS ) {
  72                 Debug( LDAP_DEBUG_TRACE,
  73                         LDAP_XSTRING(bdb_add) ": entry failed op attrs add: "
  74                         "%s (%d)\n", rs->sr_text, rs->sr_err, 0 );
  75                 goto return_results;
  76         }
  77
  78         if ( get_assert( op ) &&
  79                 ( test_filter( op, op->ora_e, get_assertion( op )) != LDAP_COMPARE_TRUE ))
  80         {
  81                 rs->sr_err = LDAP_ASSERTION_FAILED;
  82                 goto return_results;
  83         }
  84
  85         subentry = is_entry_subentry( op->ora_e );
  86
  87         if( 0 ) {
  88 retry:  /* transaction retry */
  89                 if( p ) {
  90                         /* free parent and reader lock */
  91                         if ( p != (Entry *)&slap_entry_root ) {
  92                                 bdb_unlocked_cache_return_entry_r( bdb, p );
  93                         }
  94                         p = NULL;
  95                 }
  96                 rs->sr_err = TXN_ABORT( ltid );
  97                 ltid = NULL;
  98                 LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
  99                 opinfo.boi_oe.oe_key = NULL;
 100                 op->o_do_not_cache = opinfo.boi_acl_cache;
 101                 if( rs->sr_err != 0 ) {
 102                         rs->sr_err = LDAP_OTHER;
 103                         rs->sr_text = "internal error";
 104                         goto return_results;
 105                 }
 106                 if ( op->o_abandon ) {
 107                         rs->sr_err = SLAPD_ABANDON;
 108                         goto return_results;
 109                 }
 110                 bdb_trans_backoff( ++num_retries );
 111         }
 112
 113         /* begin transaction */
 114         {
 115                 int tflags = bdb->bi_db_opflags;
 116                 if ( get_lazyCommit( op ))
 117                         tflags |= DB_TXN_NOSYNC;
 118                 rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid, tflags );
 119         }
 120         rs->sr_text = NULL;
 121         if( rs->sr_err != 0 ) {
 122                 Debug( LDAP_DEBUG_TRACE,
 123                         LDAP_XSTRING(bdb_add) ": txn_begin failed: %s (%d)\n",
 124                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 125                 rs->sr_err = LDAP_OTHER;
 126                 rs->sr_text = "internal error";
 127                 goto return_results;
 128         }
 129         Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(bdb_add) ": txn1 id: %x\n",
 130                 ltid->id(ltid), 0, 0 );
 131
 132         opinfo.boi_oe.oe_key = bdb;
 133         opinfo.boi_txn = ltid;
 134         opinfo.boi_err = 0;
 135         opinfo.boi_acl_cache = op->o_do_not_cache;
 136         LDAP_SLIST_INSERT_HEAD( &op->o_extra, &opinfo.boi_oe, oe_next );
 137
 138         /*
 139          * Get the parent dn and see if the corresponding entry exists.
 140          */
 141         if ( be_issuffix( op->o_bd, &op->ora_e->e_nname ) ) {
 142                 pdn = slap_empty_bv;
 143         } else {
 144                 dnParent( &op->ora_e->e_nname, &pdn );
 145         }
 146
 147         /* get entry or parent */
 148         rs->sr_err = bdb_dn2entry( op, ltid, &op->ora_e->e_nname, &ei,
 149                 1, &lock );
 150         switch( rs->sr_err ) {
 151         case 0:
 152                 rs->sr_err = LDAP_ALREADY_EXISTS;
 153                 goto return_results;
 154         case DB_NOTFOUND:
 155                 break;
 156         case DB_LOCK_DEADLOCK:
 157         case DB_LOCK_NOTGRANTED:
 158                 goto retry;
 159         case LDAP_BUSY:
 160                 rs->sr_text = "ldap server busy";
 161                 goto return_results;
 162         default:
 163                 rs->sr_err = LDAP_OTHER;
 164                 rs->sr_text = "internal error";
 165                 goto return_results;
 166         }
 167
 168         p = ei->bei_e;
 169         if ( !p )
 170                 p = (Entry *)&slap_entry_root;
 171
 172         if ( !bvmatch( &pdn, &p->e_nname ) ) {
 173                 rs->sr_matched = ber_strdup_x( p->e_name.bv_val,
 174                         op->o_tmpmemctx );
 175                 rs->sr_ref = is_entry_referral( p )
 176                         ? get_entry_referrals( op, p )
 177                         : NULL;
 178                 if ( p != (Entry *)&slap_entry_root )
 179                         bdb_unlocked_cache_return_entry_r( bdb, p );
 180                 p = NULL;
 181                 Debug( LDAP_DEBUG_TRACE,
 182                         LDAP_XSTRING(bdb_add) ": parent "
 183                         "does not exist\n", 0, 0, 0 );
 184
 185                 rs->sr_err = LDAP_REFERRAL;
 186                 rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
 187                 goto return_results;
 188         }
 189
 190         rs->sr_err = access_allowed( op, p,
 191                 children, NULL, ACL_WADD, NULL );
 192
 193         if ( ! rs->sr_err ) {
 194                 switch( opinfo.boi_err ) {
 195                 case DB_LOCK_DEADLOCK:
 196                 case DB_LOCK_NOTGRANTED:
 197                         goto retry;
 198                 }
 199
 200                 if ( p != (Entry *)&slap_entry_root )
 201                         bdb_unlocked_cache_return_entry_r( bdb, p );
 202                 p = NULL;
 203
 204                 Debug( LDAP_DEBUG_TRACE,
 205                         LDAP_XSTRING(bdb_add) ": no write access to parent\n",
 206                         0, 0, 0 );
 207                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 208                 rs->sr_text = "no write access to parent";
 209                 goto return_results;;
 210         }
 211
 212         if ( p != (Entry *)&slap_entry_root ) {
 213                 if ( is_entry_subentry( p ) ) {
 214                         bdb_unlocked_cache_return_entry_r( bdb, p );
 215                         p = NULL;
 216                         /* parent is a subentry, don't allow add */
 217                         Debug( LDAP_DEBUG_TRACE,
 218                                 LDAP_XSTRING(bdb_add) ": parent is subentry\n",
 219                                 0, 0, 0 );
 220                         rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 221                         rs->sr_text = "parent is a subentry";
 222                         goto return_results;;
 223                 }
 224
 225                 if ( is_entry_alias( p ) ) {
 226                         bdb_unlocked_cache_return_entry_r( bdb, p );
 227                         p = NULL;
 228                         /* parent is an alias, don't allow add */
 229                         Debug( LDAP_DEBUG_TRACE,
 230                                 LDAP_XSTRING(bdb_add) ": parent is alias\n",
 231                                 0, 0, 0 );
 232                         rs->sr_err = LDAP_ALIAS_PROBLEM;
 233                         rs->sr_text = "parent is an alias";
 234                         goto return_results;;
 235                 }
 236
 237                 if ( is_entry_referral( p ) ) {
 238                         /* parent is a referral, don't allow add */
 239                         rs->sr_matched = ber_strdup_x( p->e_name.bv_val,
 240                                 op->o_tmpmemctx );
 241                         rs->sr_ref = get_entry_referrals( op, p );
 242                         bdb_unlocked_cache_return_entry_r( bdb, p );
 243                         p = NULL;
 244                         Debug( LDAP_DEBUG_TRACE,
 245                                 LDAP_XSTRING(bdb_add) ": parent is referral\n",
 246                                 0, 0, 0 );
 247
 248                         rs->sr_err = LDAP_REFERRAL;
 249                         rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
 250                         goto return_results;
 251                 }
 252
 253         }
 254
 255         if ( subentry ) {
 256                 /* FIXME: */
 257                 /* parent must be an administrative point of the required kind */
 258         }
 259
 260         /* free parent and reader lock */
 261         if ( p != (Entry *)&slap_entry_root ) {
 262                 if ( p->e_nname.bv_len ) {
 263                         struct berval ppdn;
 264
 265                         /* ITS#5326: use parent's DN if differs from provided one */
 266                         dnParent( &op->ora_e->e_name, &ppdn );
 267                         if ( !dn_match( &p->e_name, &ppdn ) ) {
 268                                 struct berval rdn;
 269                                 struct berval newdn;
 270
 271                                 dnRdn( &op->ora_e->e_name, &rdn );
 272
 273                                 build_new_dn( &newdn, &p->e_name, &rdn, NULL );
 274                                 if ( op->ora_e->e_name.bv_val != op->o_req_dn.bv_val )
 275                                         ber_memfree( op->ora_e->e_name.bv_val );
 276                                 op->ora_e->e_name = newdn;
 277
 278                                 /* FIXME: should check whether
 279                                  * dnNormalize(newdn) == e->e_nname ... */
 280                         }
 281                 }
 282
 283                 bdb_unlocked_cache_return_entry_r( bdb, p );
 284         }
 285         p = NULL;
 286
 287         rs->sr_err = access_allowed( op, op->ora_e,
 288                 entry, NULL, ACL_WADD, NULL );
 289
 290         if ( ! rs->sr_err ) {
 291                 switch( opinfo.boi_err ) {
 292                 case DB_LOCK_DEADLOCK:
 293                 case DB_LOCK_NOTGRANTED:
 294                         goto retry;
 295                 }
 296
 297                 Debug( LDAP_DEBUG_TRACE,
 298                         LDAP_XSTRING(bdb_add) ": no write access to entry\n",
 299                         0, 0, 0 );
 300                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 301                 rs->sr_text = "no write access to entry";
 302                 goto return_results;;
 303         }
 304
 305         /*
 306          * Check ACL for attribute write access
 307          */
 308         if (!acl_check_modlist(op, oe, op->ora_modlist)) {
 309                 switch( opinfo.boi_err ) {
 310                 case DB_LOCK_DEADLOCK:
 311                 case DB_LOCK_NOTGRANTED:
 312                         goto retry;
 313                 }
 314
 315                 Debug( LDAP_DEBUG_TRACE,
 316                         LDAP_XSTRING(bdb_add) ": no write access to attribute\n",
 317                         0, 0, 0 );
 318                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 319                 rs->sr_text = "no write access to attribute";
 320                 goto return_results;;
 321         }
 322
 323         if ( eid == NOID ) {
 324                 rs->sr_err = bdb_next_id( op->o_bd, &eid );
 325                 if( rs->sr_err != 0 ) {
 326                         Debug( LDAP_DEBUG_TRACE,
 327                                 LDAP_XSTRING(bdb_add) ": next_id failed (%d)\n",
 328                                 rs->sr_err, 0, 0 );
 329                         rs->sr_err = LDAP_OTHER;
 330                         rs->sr_text = "internal error";
 331                         goto return_results;
 332                 }
 333                 op->ora_e->e_id = eid;
 334         }
 335
 336         /* nested transaction */
 337         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, &lt2,
 338                 bdb->bi_db_opflags );
 339         rs->sr_text = NULL;
 340         if( rs->sr_err != 0 ) {
 341                 Debug( LDAP_DEBUG_TRACE,
 342                         LDAP_XSTRING(bdb_add) ": txn_begin(2) failed: "
 343                         "%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
 344                 rs->sr_err = LDAP_OTHER;
 345                 rs->sr_text = "internal error";
 346                 goto return_results;
 347         }
 348         Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(bdb_add) ": txn2 id: %x\n",
 349                 lt2->id(lt2), 0, 0 );
 350
 351         /* dn2id index */
 352         rs->sr_err = bdb_dn2id_add( op, lt2, ei, op->ora_e );
 353         if ( rs->sr_err != 0 ) {
 354                 Debug( LDAP_DEBUG_TRACE,
 355                         LDAP_XSTRING(bdb_add) ": dn2id_add failed: %s (%d)\n",
 356                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 357
 358                 switch( rs->sr_err ) {
 359                 case DB_LOCK_DEADLOCK:
 360                 case DB_LOCK_NOTGRANTED:
 361                         goto retry;
 362                 case DB_KEYEXIST:
 363                         rs->sr_err = LDAP_ALREADY_EXISTS;
 364                         break;
 365                 default:
 366                         rs->sr_err = LDAP_OTHER;
 367                 }
 368                 goto return_results;
 369         }
 370
 371         /* attribute indexes */
 372         rs->sr_err = bdb_index_entry_add( op, lt2, op->ora_e );
 373         if ( rs->sr_err != LDAP_SUCCESS ) {
 374                 Debug( LDAP_DEBUG_TRACE,
 375                         LDAP_XSTRING(bdb_add) ": index_entry_add failed\n",
 376                         0, 0, 0 );
 377                 switch( rs->sr_err ) {
 378                 case DB_LOCK_DEADLOCK:
 379                 case DB_LOCK_NOTGRANTED:
 380                         goto retry;
 381                 default:
 382                         rs->sr_err = LDAP_OTHER;
 383                 }
 384                 rs->sr_text = "index generation failed";
 385                 goto return_results;
 386         }
 387
 388         /* id2entry index */
 389         rs->sr_err = bdb_id2entry_add( op->o_bd, lt2, op->ora_e );
 390         if ( rs->sr_err != 0 ) {
 391                 Debug( LDAP_DEBUG_TRACE,
 392                         LDAP_XSTRING(bdb_add) ": id2entry_add failed\n",
 393                         0, 0, 0 );
 394                 switch( rs->sr_err ) {
 395                 case DB_LOCK_DEADLOCK:
 396                 case DB_LOCK_NOTGRANTED:
 397                         goto retry;
 398                 default:
 399                         rs->sr_err = LDAP_OTHER;
 400                 }
 401                 rs->sr_text = "entry store failed";
 402                 goto return_results;
 403         }
 404
 405         if ( TXN_COMMIT( lt2, 0 ) != 0 ) {
 406                 rs->sr_err = LDAP_OTHER;
 407                 rs->sr_text = "txn_commit(2) failed";
 408                 goto return_results;
 409         }
 410
 411         /* post-read */
 412         if( op->o_postread ) {
 413                 if( postread_ctrl == NULL ) {
 414                         postread_ctrl = &ctrls[num_ctrls++];
 415                         ctrls[num_ctrls] = NULL;
 416                 }
 417                 if ( slap_read_controls( op, rs, op->ora_e,
 418                         &slap_post_read_bv, postread_ctrl ) )
 419                 {
 420                         Debug( LDAP_DEBUG_TRACE,
 421                                 "<=- " LDAP_XSTRING(bdb_add) ": post-read "
 422                                 "failed!\n", 0, 0, 0 );
 423                         if ( op->o_postread & SLAP_CONTROL_CRITICAL ) {
 424                                 /* FIXME: is it correct to abort
 425                                  * operation if control fails? */
 426                                 goto return_results;
 427                         }
 428                 }
 429         }
 430
 431         if ( op->o_noop ) {
 432                 if (( rs->sr_err=TXN_ABORT( ltid )) != 0 ) {
 433                         rs->sr_text = "txn_abort (no-op) failed";
 434                 } else {
 435                         rs->sr_err = LDAP_X_NO_OPERATION;
 436                         ltid = NULL;
 437                         goto return_results;
 438                 }
 439
 440         } else {
 441                 struct berval nrdn;
 442
 443                 /* pick the RDN if not suffix; otherwise pick the entire DN */
 444                 if (pdn.bv_len) {
 445                         nrdn.bv_val = op->ora_e->e_nname.bv_val;
 446                         nrdn.bv_len = pdn.bv_val - op->ora_e->e_nname.bv_val - 1;
 447                 } else {
 448                         nrdn = op->ora_e->e_nname;
 449                 }
 450
 451                 bdb_cache_add( bdb, ei, op->ora_e, &nrdn, ltid, &lock );
 452
 453                 if(( rs->sr_err=TXN_COMMIT( ltid, 0 )) != 0 ) {
 454                         rs->sr_text = "txn_commit failed";
 455                 } else {
 456                         rs->sr_err = LDAP_SUCCESS;
 457                 }
 458         }
 459
 460         ltid = NULL;
 461         LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 462         opinfo.boi_oe.oe_key = NULL;
 463
 464         if ( rs->sr_err != LDAP_SUCCESS ) {
 465                 Debug( LDAP_DEBUG_TRACE,
 466                         LDAP_XSTRING(bdb_add) ": %s : %s (%d)\n",
 467                         rs->sr_text, db_strerror(rs->sr_err), rs->sr_err );
 468                 rs->sr_err = LDAP_OTHER;
 469                 goto return_results;
 470         }
 471
 472         Debug(LDAP_DEBUG_TRACE,
 473                 LDAP_XSTRING(bdb_add) ": added%s id=%08lx dn=\"%s\"\n",
 474                 op->o_noop ? " (no-op)" : "",
 475                 op->ora_e->e_id, op->ora_e->e_dn );
 476
 477         rs->sr_text = NULL;
 478         if( num_ctrls ) rs->sr_ctrls = ctrls;
 479
 480 return_results:
 481         success = rs->sr_err;
 482         send_ldap_result( op, rs );
 483
 484         if( ltid != NULL ) {
 485                 TXN_ABORT( ltid );
 486         }
 487         if ( opinfo.boi_oe.oe_key ) {
 488                 LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
 489         }
 490
 491         if( success == LDAP_SUCCESS ) {
 492                 /* We own the entry now, and it can be purged at will
 493                  * Check to make sure it's the same entry we entered with.
 494                  * Possibly a callback may have mucked with it, although
 495                  * in general callbacks should treat the entry as read-only.
 496                  */
 497                 bdb_cache_deref( oe->e_private );
 498                 if ( op->ora_e == oe )
 499                         op->ora_e = NULL;
 500
 501                 if ( bdb->bi_txn_cp_kbyte ) {
 502                         TXN_CHECKPOINT( bdb->bi_dbenv,
 503                                 bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 504                 }
 505         }
 506
 507         slap_graduate_commit_csn( op );
 508
 509         if( postread_ctrl != NULL && (*postread_ctrl) != NULL ) {
 510                 slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 511                 slap_sl_free( *postread_ctrl, op->o_tmpmemctx );
 512         }
 513         return rs->sr_err;
 514 }