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