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 2000-2004 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 #include "external.h"
  24
  25 int
  26 bdb_add(Operation *op, SlapReply *rs )
  27 {
  28         struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
  29         struct berval   pdn;
  30         Entry           *p = NULL;
  31         EntryInfo       *ei;
  32         char textbuf[SLAP_TEXT_BUFLEN];
  33         size_t textlen = sizeof textbuf;
  34         AttributeDescription *children = slap_schema.si_ad_children;
  35         AttributeDescription *entry = slap_schema.si_ad_entry;
  36         DB_TXN          *ltid = NULL, *lt2;
  37         struct bdb_op_info opinfo;
  38 #ifdef BDB_SUBENTRIES
  39         int subentry;
  40 #endif
  41         u_int32_t       locker = 0;
  42         DB_LOCK         lock;
  43
  44         int             num_retries = 0;
  45
  46         Operation* ps_list;
  47         int             rc;
  48         EntryInfo       *suffix_ei = NULL;
  49         Entry           *ctxcsn_e;
  50         int                     ctxcsn_added = 0;
  51
  52         LDAPControl **postread_ctrl = NULL;
  53         LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
  54         int num_ctrls = 0;
  55
  56         Debug(LDAP_DEBUG_ARGS, "==> " LDAP_XSTRING(bdb_add) ": %s\n",
  57                 op->oq_add.rs_e->e_name.bv_val, 0, 0);
  58
  59         ctrls[num_ctrls] = 0;
  60
  61         /* check entry's schema */
  62         rs->sr_err = entry_schema_check( op->o_bd, op->oq_add.rs_e,
  63                 NULL, &rs->sr_text, textbuf, textlen );
  64         if ( rs->sr_err != LDAP_SUCCESS ) {
  65                 Debug( LDAP_DEBUG_TRACE,
  66                         LDAP_XSTRING(bdb_add) ": entry failed schema check: "
  67                         "%s (%d)\n", rs->sr_text, rs->sr_err, 0 );
  68                 goto return_results;
  69         }
  70
  71 #ifdef BDB_SUBENTRIES
  72         subentry = is_entry_subentry( op->oq_add.rs_e );
  73 #endif
  74
  75         /*
  76          * acquire an ID outside of the operation transaction
  77          * to avoid serializing adds.
  78          */
  79         rs->sr_err = bdb_next_id( op->o_bd, NULL, &op->oq_add.rs_e->e_id );
  80         if( rs->sr_err != 0 ) {
  81                 Debug( LDAP_DEBUG_TRACE,
  82                         LDAP_XSTRING(bdb_add) ": next_id failed (%d)\n",
  83                         rs->sr_err, 0, 0 );
  84                 rs->sr_err = LDAP_OTHER;
  85                 rs->sr_text = "internal error";
  86                 goto return_results;
  87         }
  88
  89         if( 0 ) {
  90 retry:  /* transaction retry */
  91                 if( p ) {
  92                         /* free parent and reader lock */
  93                         bdb_unlocked_cache_return_entry_r( &bdb->bi_cache, p );
  94                         p = NULL;
  95                 }
  96                 rs->sr_err = TXN_ABORT( ltid );
  97                 ltid = NULL;
  98                 op->o_private = NULL;
  99                 op->o_do_not_cache = opinfo.boi_acl_cache;
 100                 if( rs->sr_err != 0 ) {
 101                         rs->sr_err = LDAP_OTHER;
 102                         rs->sr_text = "internal error";
 103                         goto return_results;
 104                 }
 105                 ldap_pvt_thread_yield();
 106                 bdb_trans_backoff( ++num_retries );
 107         }
 108
 109         /* begin transaction */
 110         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid,
 111                 bdb->bi_db_opflags );
 112         rs->sr_text = NULL;
 113         if( rs->sr_err != 0 ) {
 114                 Debug( LDAP_DEBUG_TRACE,
 115                         LDAP_XSTRING(bdb_add) ": txn_begin failed: %s (%d)\n",
 116                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 117                 rs->sr_err = LDAP_OTHER;
 118                 rs->sr_text = "internal error";
 119                 goto return_results;
 120         }
 121
 122         locker = TXN_ID ( ltid );
 123
 124         opinfo.boi_bdb = op->o_bd;
 125         opinfo.boi_txn = ltid;
 126         opinfo.boi_locker = locker;
 127         opinfo.boi_err = 0;
 128         opinfo.boi_acl_cache = op->o_do_not_cache;
 129         op->o_private = &opinfo;
 130
 131         /*
 132          * Get the parent dn and see if the corresponding entry exists.
 133          */
 134         if ( be_issuffix( op->o_bd, &op->oq_add.rs_e->e_nname ) ) {
 135                 pdn = slap_empty_bv;
 136         } else {
 137                 dnParent( &op->oq_add.rs_e->e_nname, &pdn );
 138         }
 139
 140         /* get entry or parent */
 141         rs->sr_err = bdb_dn2entry( op, ltid, &op->ora_e->e_nname, &ei,
 142                 1, locker, &lock );
 143         switch( rs->sr_err ) {
 144         case 0:
 145                 rs->sr_err = LDAP_ALREADY_EXISTS;
 146                 goto return_results;
 147         case DB_NOTFOUND:
 148                 break;
 149         case DB_LOCK_DEADLOCK:
 150         case DB_LOCK_NOTGRANTED:
 151                 goto retry;
 152         case LDAP_BUSY:
 153                 rs->sr_text = "ldap server busy";
 154                 goto return_results;
 155         default:
 156                 rs->sr_err = LDAP_OTHER;
 157                 rs->sr_text = "internal error";
 158                 goto return_results;
 159         }
 160
 161         p = ei->bei_e;
 162         if ( p ) {
 163                 if ( !bvmatch( &pdn, &p->e_nname ) ) {
 164                         rs->sr_matched = ber_strdup_x( p->e_name.bv_val,
 165                                 op->o_tmpmemctx );
 166                         rs->sr_ref = is_entry_referral( p )
 167                                 ? get_entry_referrals( op, p )
 168                                 : NULL;
 169                         bdb_unlocked_cache_return_entry_r( &bdb->bi_cache, p );
 170                         p = NULL;
 171                         Debug( LDAP_DEBUG_TRACE,
 172                                 LDAP_XSTRING(bdb_add) ": parent "
 173                                 "does not exist\n", 0, 0, 0 );
 174
 175                         rs->sr_err = LDAP_REFERRAL;
 176                         send_ldap_result( op, rs );
 177
 178                         ber_bvarray_free( rs->sr_ref );
 179                         op->o_tmpfree( (char *)rs->sr_matched, op->o_tmpmemctx );
 180                         rs->sr_ref = NULL;
 181                         rs->sr_matched = NULL;
 182
 183                         goto done;
 184                 }
 185
 186                 rs->sr_err = access_allowed( op, p,
 187                         children, NULL, ACL_WRITE, 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                         Debug( LDAP_DEBUG_TRACE,
 197                                 LDAP_XSTRING(bdb_add) ": no write access "
 198                                 "to parent\n", 0, 0, 0 );
 199                         rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 200                         rs->sr_text = "no write access to parent";
 201                         goto return_results;;
 202                 }
 203
 204 #ifdef BDB_SUBENTRIES
 205                 if ( is_entry_subentry( p ) ) {
 206                         /* parent is a subentry, don't allow add */
 207                         Debug( LDAP_DEBUG_TRACE,
 208                                 LDAP_XSTRING(bdb_add) ": parent is subentry\n",
 209                                 0, 0, 0 );
 210                         rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 211                         rs->sr_text = "parent is a subentry";
 212                         goto return_results;;
 213                 }
 214 #endif
 215                 if ( is_entry_alias( p ) ) {
 216                         /* parent is an alias, don't allow add */
 217                         Debug( LDAP_DEBUG_TRACE,
 218                                 LDAP_XSTRING(bdb_add) ": parent is alias\n",
 219                                 0, 0, 0 );
 220                         rs->sr_err = LDAP_ALIAS_PROBLEM;
 221                         rs->sr_text = "parent is an alias";
 222                         goto return_results;;
 223                 }
 224
 225                 if ( is_entry_referral( p ) ) {
 226                         /* parent is a referral, don't allow add */
 227                         rs->sr_matched = p->e_name.bv_val;
 228                         rs->sr_ref = get_entry_referrals( op, p );
 229
 230                         Debug( LDAP_DEBUG_TRACE,
 231                                 LDAP_XSTRING(bdb_add) ": parent is referral\n",
 232                                 0, 0, 0 );
 233
 234                         rs->sr_err = LDAP_REFERRAL;
 235                         send_ldap_result( op, rs );
 236
 237                         ber_bvarray_free( rs->sr_ref );
 238                         bdb_unlocked_cache_return_entry_r( &bdb->bi_cache, p );
 239                         rs->sr_ref = NULL;
 240                         rs->sr_matched = NULL;
 241                         p = NULL;
 242                         goto done;
 243                 }
 244
 245 #ifdef BDB_SUBENTRIES
 246                 if ( subentry ) {
 247                         /* FIXME: */
 248                         /* parent must be an administrative point of the required kind */
 249                 }
 250 #endif
 251
 252                 /* free parent and reader lock */
 253                 bdb_unlocked_cache_return_entry_r( &bdb->bi_cache, p );
 254                 p = NULL;
 255
 256         } else {
 257                 /*
 258                  * no parent!
 259                  *  if not attempting to add entry at suffix or with parent ""
 260                  */
 261                 if ((( !be_isroot( op ) && !be_shadow_update(op) )
 262                         || pdn.bv_len > 0 ) && !is_entry_glue( op->oq_add.rs_e ))
 263                 {
 264                         Debug( LDAP_DEBUG_TRACE,
 265                                 LDAP_XSTRING(bdb_add) ": %s denied\n",
 266                                 pdn.bv_len == 0 ? "suffix" : "entry at root",
 267                                 0, 0 );
 268                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 269                         goto return_results;
 270                 }
 271         }
 272
 273         if ( get_assert( op ) &&
 274                 ( test_filter( op, op->oq_add.rs_e, get_assertion( op ))
 275                         != LDAP_COMPARE_TRUE ))
 276         {
 277                 rs->sr_err = LDAP_ASSERTION_FAILED;
 278                 goto return_results;
 279         }
 280
 281         rs->sr_err = access_allowed( op, op->oq_add.rs_e,
 282                 entry, NULL, ACL_WRITE, NULL );
 283
 284         if ( ! rs->sr_err ) {
 285                 switch( opinfo.boi_err ) {
 286                 case DB_LOCK_DEADLOCK:
 287                 case DB_LOCK_NOTGRANTED:
 288                         goto retry;
 289                 }
 290
 291                 Debug( LDAP_DEBUG_TRACE,
 292                         LDAP_XSTRING(bdb_add) ": no write access to entry\n",
 293                         0, 0, 0 );
 294                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 295                 rs->sr_text = "no write access to entry";
 296                 goto return_results;;
 297         }
 298
 299         /* nested transaction */
 300         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, &lt2,
 301                 bdb->bi_db_opflags );
 302         rs->sr_text = NULL;
 303         if( rs->sr_err != 0 ) {
 304                 Debug( LDAP_DEBUG_TRACE,
 305                         LDAP_XSTRING(bdb_add) ": txn_begin(2) failed: "
 306                         "%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
 307                 rs->sr_err = LDAP_OTHER;
 308                 rs->sr_text = "internal error";
 309                 goto return_results;
 310         }
 311
 312         /* dn2id index */
 313         rs->sr_err = bdb_dn2id_add( op, lt2, ei, op->oq_add.rs_e );
 314         if ( rs->sr_err != 0 ) {
 315                 Debug( LDAP_DEBUG_TRACE,
 316                         LDAP_XSTRING(bdb_add) ": dn2id_add failed: %s (%d)\n",
 317                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 318
 319                 switch( rs->sr_err ) {
 320                 case DB_LOCK_DEADLOCK:
 321                 case DB_LOCK_NOTGRANTED:
 322                         goto retry;
 323                 case DB_KEYEXIST:
 324                         rs->sr_err = LDAP_ALREADY_EXISTS;
 325                         break;
 326                 default:
 327                         rs->sr_err = LDAP_OTHER;
 328                 }
 329                 goto return_results;
 330         }
 331
 332         /* id2entry index */
 333         rs->sr_err = bdb_id2entry_add( op->o_bd, lt2, op->oq_add.rs_e );
 334         if ( rs->sr_err != 0 ) {
 335                 Debug( LDAP_DEBUG_TRACE,
 336                         LDAP_XSTRING(bdb_add) ": id2entry_add failed\n",
 337                         0, 0, 0 );
 338                 switch( rs->sr_err ) {
 339                 case DB_LOCK_DEADLOCK:
 340                 case DB_LOCK_NOTGRANTED:
 341                         goto retry;
 342                 default:
 343                         rs->sr_err = LDAP_OTHER;
 344                 }
 345                 rs->sr_text = "entry store failed";
 346                 goto return_results;
 347         }
 348
 349         /* attribute indexes */
 350         rs->sr_err = bdb_index_entry_add( op, lt2, op->oq_add.rs_e );
 351         if ( rs->sr_err != LDAP_SUCCESS ) {
 352                 Debug( LDAP_DEBUG_TRACE,
 353                         LDAP_XSTRING(bdb_add) ": index_entry_add failed\n",
 354                         0, 0, 0 );
 355                 switch( rs->sr_err ) {
 356                 case DB_LOCK_DEADLOCK:
 357                 case DB_LOCK_NOTGRANTED:
 358                         goto retry;
 359                 default:
 360                         rs->sr_err = LDAP_OTHER;
 361                 }
 362                 rs->sr_text = "index generation failed";
 363                 goto return_results;
 364         }
 365         if ( TXN_COMMIT( lt2, 0 ) != 0 ) {
 366                 rs->sr_err = LDAP_OTHER;
 367                 rs->sr_text = "txn_commit(2) failed";
 368                 goto return_results;
 369         }
 370
 371         if ( LDAP_STAILQ_EMPTY( &op->o_bd->be_syncinfo )) {
 372                 rc = bdb_csn_commit( op, rs, ltid, ei, &suffix_ei,
 373                         &ctxcsn_e, &ctxcsn_added, locker );
 374                 switch ( rc ) {
 375                 case BDB_CSN_ABORT :
 376                         goto return_results;
 377                 case BDB_CSN_RETRY :
 378                         goto retry;
 379                 }
 380         }
 381
 382         /* post-read */
 383         if( op->o_postread ) {
 384                 if( postread_ctrl == NULL ) {
 385                         postread_ctrl = &ctrls[num_ctrls++];
 386                         ctrls[num_ctrls] = NULL;
 387                 }
 388                 if ( slap_read_controls( op, rs, op->oq_add.rs_e,
 389                         &slap_post_read_bv, postread_ctrl ) )
 390                 {
 391                         Debug( LDAP_DEBUG_TRACE,
 392                                 "<=- " LDAP_XSTRING(bdb_add) ": post-read "
 393                                 "failed!\n", 0, 0, 0 );
 394                         goto return_results;
 395                 }
 396         }
 397
 398         if ( op->o_noop ) {
 399                 if (( rs->sr_err=TXN_ABORT( ltid )) != 0 ) {
 400                         rs->sr_text = "txn_abort (no-op) failed";
 401                 } else {
 402                         rs->sr_err = LDAP_NO_OPERATION;
 403                         goto return_results;
 404                 }
 405
 406         } else {
 407                 struct berval nrdn;
 408                 Entry *e = entry_dup( op->ora_e );
 409
 410                 if (pdn.bv_len) {
 411                         nrdn.bv_val = e->e_nname.bv_val;
 412                         nrdn.bv_len = pdn.bv_val - op->ora_e->e_nname.bv_val - 1;
 413                 } else {
 414                         nrdn = e->e_nname;
 415                 }
 416
 417                 bdb_cache_add( bdb, ei, e, &nrdn, locker );
 418
 419                 if ( suffix_ei == NULL ) {
 420                         suffix_ei = BEI(e);
 421                 }
 422
 423                 if ( LDAP_STAILQ_EMPTY( &op->o_bd->be_syncinfo )) {
 424                         if ( ctxcsn_added ) {
 425                                 bdb_cache_add( bdb, suffix_ei, ctxcsn_e,
 426                                         (struct berval *)&slap_ldapsync_cn_bv, locker );
 427                         }
 428                 }
 429
 430                 if ( rs->sr_err == LDAP_SUCCESS && !op->o_no_psearch ) {
 431                         ldap_pvt_thread_rdwr_wlock( &bdb->bi_pslist_rwlock );
 432                         assert( BEI(e) );
 433                         LDAP_LIST_FOREACH ( ps_list, &bdb->bi_psearch_list, o_ps_link ) {
 434                                 rc = bdb_psearch( op, rs, ps_list, e, LDAP_PSEARCH_BY_ADD );
 435                                 if ( rc ) {
 436                                         Debug( LDAP_DEBUG_TRACE,
 437                                                 LDAP_XSTRING(bdb_add)
 438                                                 ": persistent search failed "
 439                                                 "(%d,%d)\n",
 440                                                 rc, rs->sr_err, 0 );
 441                                 }
 442                         }
 443                         ldap_pvt_thread_rdwr_wunlock( &bdb->bi_pslist_rwlock );
 444                 }
 445
 446                 if(( rs->sr_err=TXN_COMMIT( ltid, 0 )) != 0 ) {
 447                         rs->sr_text = "txn_commit failed";
 448                 } else {
 449                         rs->sr_err = LDAP_SUCCESS;
 450                 }
 451         }
 452
 453         ltid = NULL;
 454         op->o_private = NULL;
 455
 456         if ( rs->sr_err != LDAP_SUCCESS ) {
 457                 Debug( LDAP_DEBUG_TRACE,
 458                         LDAP_XSTRING(bdb_add) ": %s : %s (%d)\n",
 459                         rs->sr_text, db_strerror(rs->sr_err), rs->sr_err );
 460                 rs->sr_err = LDAP_OTHER;
 461                 goto return_results;
 462         }
 463
 464         Debug(LDAP_DEBUG_TRACE,
 465                 LDAP_XSTRING(bdb_add) ": added%s id=%08lx dn=\"%s\"\n",
 466                 op->o_noop ? " (no-op)" : "",
 467                 op->oq_add.rs_e->e_id, op->oq_add.rs_e->e_dn );
 468
 469         rs->sr_text = NULL;
 470         if( num_ctrls ) rs->sr_ctrls = ctrls;
 471
 472 return_results:
 473         send_ldap_result( op, rs );
 474
 475         if( rs->sr_err == LDAP_SUCCESS && bdb->bi_txn_cp ) {
 476                 ldap_pvt_thread_yield();
 477                 TXN_CHECKPOINT( bdb->bi_dbenv,
 478                         bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 479         }
 480
 481 done:
 482         if( ltid != NULL ) {
 483                 TXN_ABORT( ltid );
 484                 op->o_private = NULL;
 485         }
 486
 487         if( postread_ctrl != NULL ) {
 488                 slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 489                 slap_sl_free( *postread_ctrl, op->o_tmpmemctx );
 490         }
 491         return rs->sr_err;
 492 }