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 2000-2006 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         struct bdb_op_info opinfo = {0};
  37         int subentry;
  38         u_int32_t       locker = 0;
  39         DB_LOCK         lock;
  40
  41         int             num_retries = 0;
  42
  43         LDAPControl **postread_ctrl = NULL;
  44         LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
  45         int num_ctrls = 0;
  46
  47 #ifdef LDAP_X_TXN
  48         int settle = 0;
  49 #endif
  50
  51         Debug(LDAP_DEBUG_ARGS, "==> " LDAP_XSTRING(bdb_add) ": %s\n",
  52                 op->oq_add.rs_e->e_name.bv_val, 0, 0);
  53
  54 #ifdef LDAP_X_TXN
  55         if( op->o_txnSpec ) {
  56                 /* acquire connection lock */
  57                 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
  58                 if( op->o_conn->c_txn == CONN_TXN_INACTIVE ) {
  59                         rs->sr_text = "invalid transaction identifier";
  60                         rs->sr_err = LDAP_X_TXN_ID_INVALID;
  61                         goto txnReturn;
  62                 } else if( op->o_conn->c_txn == CONN_TXN_SETTLE ) {
  63                         settle=1;
  64                         goto txnReturn;
  65                 }
  66
  67                 if( op->o_conn->c_txn_backend == NULL ) {
  68                         op->o_conn->c_txn_backend = op->o_bd;
  69
  70                 } else if( op->o_conn->c_txn_backend != op->o_bd ) {
  71                         rs->sr_text = "transaction cannot span multiple database contexts";
  72                         rs->sr_err = LDAP_AFFECTS_MULTIPLE_DSAS;
  73                         goto txnReturn;
  74                 }
  75
  76                 /* insert operation into transaction */
  77
  78                 rs->sr_text = "transaction specified";
  79                 rs->sr_err = LDAP_X_TXN_SPECIFY_OKAY;
  80
  81 txnReturn:
  82                 /* release connection lock */
  83                 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
  84
  85                 if( !settle ) {
  86                         send_ldap_result( op, rs );
  87                         return rs->sr_err;
  88                 }
  89         }
  90 #endif
  91
  92         ctrls[num_ctrls] = 0;
  93
  94
  95         /* check entry's schema */
  96         rs->sr_err = entry_schema_check( op, op->oq_add.rs_e, NULL,
  97                 get_relax(op), 1, &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         subentry = is_entry_subentry( op->oq_add.rs_e );
 116
 117         /*
 118          * acquire an ID outside of the operation transaction
 119          * to avoid serializing adds.
 120          */
 121         rs->sr_err = bdb_next_id( op->o_bd, NULL, &op->oq_add.rs_e->e_id );
 122         if( rs->sr_err != 0 ) {
 123                 Debug( LDAP_DEBUG_TRACE,
 124                         LDAP_XSTRING(bdb_add) ": next_id failed (%d)\n",
 125                         rs->sr_err, 0, 0 );
 126                 rs->sr_err = LDAP_OTHER;
 127                 rs->sr_text = "internal error";
 128                 goto return_results;
 129         }
 130
 131         if( 0 ) {
 132 retry:  /* transaction retry */
 133                 if( p ) {
 134                         /* free parent and reader lock */
 135                         if ( p != (Entry *)&slap_entry_root ) {
 136                                 bdb_unlocked_cache_return_entry_r( &bdb->bi_cache, p );
 137                         }
 138                         p = NULL;
 139                 }
 140                 rs->sr_err = TXN_ABORT( ltid );
 141                 ltid = NULL;
 142                 op->o_private = NULL;
 143                 op->o_do_not_cache = opinfo.boi_acl_cache;
 144                 if( rs->sr_err != 0 ) {
 145                         rs->sr_err = LDAP_OTHER;
 146                         rs->sr_text = "internal error";
 147                         goto return_results;
 148                 }
 149                 if ( op->o_abandon ) {
 150                         rs->sr_err = SLAPD_ABANDON;
 151                         goto return_results;
 152                 }
 153                 bdb_trans_backoff( ++num_retries );
 154         }
 155
 156         /* begin transaction */
 157         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid,
 158                 bdb->bi_db_opflags );
 159         rs->sr_text = NULL;
 160         if( rs->sr_err != 0 ) {
 161                 Debug( LDAP_DEBUG_TRACE,
 162                         LDAP_XSTRING(bdb_add) ": txn_begin failed: %s (%d)\n",
 163                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 164                 rs->sr_err = LDAP_OTHER;
 165                 rs->sr_text = "internal error";
 166                 goto return_results;
 167         }
 168
 169         locker = TXN_ID ( ltid );
 170
 171         opinfo.boi_bdb = op->o_bd;
 172         opinfo.boi_txn = ltid;
 173         opinfo.boi_locker = locker;
 174         opinfo.boi_err = 0;
 175         opinfo.boi_acl_cache = op->o_do_not_cache;
 176         op->o_private = &opinfo;
 177
 178         /*
 179          * Get the parent dn and see if the corresponding entry exists.
 180          */
 181         if ( be_issuffix( op->o_bd, &op->oq_add.rs_e->e_nname ) ) {
 182                 pdn = slap_empty_bv;
 183         } else {
 184                 dnParent( &op->oq_add.rs_e->e_nname, &pdn );
 185         }
 186
 187         /* get entry or parent */
 188         rs->sr_err = bdb_dn2entry( op, ltid, &op->ora_e->e_nname, &ei,
 189                 1, locker, &lock );
 190         switch( rs->sr_err ) {
 191         case 0:
 192                 rs->sr_err = LDAP_ALREADY_EXISTS;
 193                 goto return_results;
 194         case DB_NOTFOUND:
 195                 break;
 196         case DB_LOCK_DEADLOCK:
 197         case DB_LOCK_NOTGRANTED:
 198                 goto retry;
 199         case LDAP_BUSY:
 200                 rs->sr_text = "ldap server busy";
 201                 goto return_results;
 202         default:
 203                 rs->sr_err = LDAP_OTHER;
 204                 rs->sr_text = "internal error";
 205                 goto return_results;
 206         }
 207
 208         p = ei->bei_e;
 209         if ( !p )
 210                 p = (Entry *)&slap_entry_root;
 211
 212         if ( !bvmatch( &pdn, &p->e_nname ) ) {
 213                 rs->sr_matched = ber_strdup_x( p->e_name.bv_val,
 214                         op->o_tmpmemctx );
 215                 rs->sr_ref = is_entry_referral( p )
 216                         ? get_entry_referrals( op, p )
 217                         : NULL;
 218                 bdb_unlocked_cache_return_entry_r( &bdb->bi_cache, p );
 219                 p = NULL;
 220                 Debug( LDAP_DEBUG_TRACE,
 221                         LDAP_XSTRING(bdb_add) ": parent "
 222                         "does not exist\n", 0, 0, 0 );
 223
 224                 rs->sr_err = LDAP_REFERRAL;
 225                 rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
 226                 goto return_results;
 227         }
 228
 229         rs->sr_err = access_allowed( op, p,
 230                 children, NULL, ACL_WADD, NULL );
 231
 232         if ( ! rs->sr_err ) {
 233                 switch( opinfo.boi_err ) {
 234                 case DB_LOCK_DEADLOCK:
 235                 case DB_LOCK_NOTGRANTED:
 236                         goto retry;
 237                 }
 238
 239                 Debug( LDAP_DEBUG_TRACE,
 240                         LDAP_XSTRING(bdb_add) ": no write access to parent\n",
 241                         0, 0, 0 );
 242                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 243                 rs->sr_text = "no write access to parent";
 244                 goto return_results;;
 245         }
 246
 247         if ( p != (Entry *)&slap_entry_root ) {
 248                 if ( is_entry_subentry( p ) ) {
 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                         /* 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->bi_cache, 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                 if ( subentry ) {
 285                         /* FIXME: */
 286                         /* parent must be an administrative point of the required kind */
 287                 }
 288         }
 289
 290         /* free parent and reader lock */
 291         if ( p != (Entry *)&slap_entry_root ) {
 292                 bdb_unlocked_cache_return_entry_r( &bdb->bi_cache, p );
 293         }
 294         p = NULL;
 295
 296         rs->sr_err = access_allowed( op, op->oq_add.rs_e,
 297                 entry, NULL, ACL_WADD, NULL );
 298
 299         if ( ! rs->sr_err ) {
 300                 switch( opinfo.boi_err ) {
 301                 case DB_LOCK_DEADLOCK:
 302                 case DB_LOCK_NOTGRANTED:
 303                         goto retry;
 304                 }
 305
 306                 Debug( LDAP_DEBUG_TRACE,
 307                         LDAP_XSTRING(bdb_add) ": no write access to entry\n",
 308                         0, 0, 0 );
 309                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 310                 rs->sr_text = "no write access to entry";
 311                 goto return_results;;
 312         }
 313
 314         /* nested transaction */
 315         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, &lt2,
 316                 bdb->bi_db_opflags );
 317         rs->sr_text = NULL;
 318         if( rs->sr_err != 0 ) {
 319                 Debug( LDAP_DEBUG_TRACE,
 320                         LDAP_XSTRING(bdb_add) ": txn_begin(2) failed: "
 321                         "%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
 322                 rs->sr_err = LDAP_OTHER;
 323                 rs->sr_text = "internal error";
 324                 goto return_results;
 325         }
 326
 327         /* dn2id index */
 328         rs->sr_err = bdb_dn2id_add( op, lt2, ei, op->oq_add.rs_e );
 329         if ( rs->sr_err != 0 ) {
 330                 Debug( LDAP_DEBUG_TRACE,
 331                         LDAP_XSTRING(bdb_add) ": dn2id_add failed: %s (%d)\n",
 332                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 333
 334                 switch( rs->sr_err ) {
 335                 case DB_LOCK_DEADLOCK:
 336                 case DB_LOCK_NOTGRANTED:
 337                         goto retry;
 338                 case DB_KEYEXIST:
 339                         rs->sr_err = LDAP_ALREADY_EXISTS;
 340                         break;
 341                 default:
 342                         rs->sr_err = LDAP_OTHER;
 343                 }
 344                 goto return_results;
 345         }
 346
 347         /* attribute indexes */
 348         rs->sr_err = bdb_index_entry_add( op, lt2, op->oq_add.rs_e );
 349         if ( rs->sr_err != LDAP_SUCCESS ) {
 350                 Debug( LDAP_DEBUG_TRACE,
 351                         LDAP_XSTRING(bdb_add) ": index_entry_add failed\n",
 352                         0, 0, 0 );
 353                 switch( rs->sr_err ) {
 354                 case DB_LOCK_DEADLOCK:
 355                 case DB_LOCK_NOTGRANTED:
 356                         goto retry;
 357                 default:
 358                         rs->sr_err = LDAP_OTHER;
 359                 }
 360                 rs->sr_text = "index generation failed";
 361                 goto return_results;
 362         }
 363
 364         /* id2entry index */
 365         rs->sr_err = bdb_id2entry_add( op->o_bd, lt2, op->oq_add.rs_e );
 366         if ( rs->sr_err != 0 ) {
 367                 Debug( LDAP_DEBUG_TRACE,
 368                         LDAP_XSTRING(bdb_add) ": id2entry_add failed\n",
 369                         0, 0, 0 );
 370                 switch( rs->sr_err ) {
 371                 case DB_LOCK_DEADLOCK:
 372                 case DB_LOCK_NOTGRANTED:
 373                         goto retry;
 374                 default:
 375                         rs->sr_err = LDAP_OTHER;
 376                 }
 377                 rs->sr_text = "entry store failed";
 378                 goto return_results;
 379         }
 380
 381         if ( TXN_COMMIT( lt2, 0 ) != 0 ) {
 382                 rs->sr_err = LDAP_OTHER;
 383                 rs->sr_text = "txn_commit(2) failed";
 384                 goto return_results;
 385         }
 386
 387         /* post-read */
 388         if( op->o_postread ) {
 389                 if( postread_ctrl == NULL ) {
 390                         postread_ctrl = &ctrls[num_ctrls++];
 391                         ctrls[num_ctrls] = NULL;
 392                 }
 393                 if ( slap_read_controls( op, rs, op->oq_add.rs_e,
 394                         &slap_post_read_bv, postread_ctrl ) )
 395                 {
 396                         Debug( LDAP_DEBUG_TRACE,
 397                                 "<=- " LDAP_XSTRING(bdb_add) ": post-read "
 398                                 "failed!\n", 0, 0, 0 );
 399                         if ( op->o_postread & SLAP_CONTROL_CRITICAL ) {
 400                                 /* FIXME: is it correct to abort
 401                                  * operation if control fails? */
 402                                 goto return_results;
 403                         }
 404                 }
 405         }
 406
 407         if ( op->o_noop ) {
 408                 if (( rs->sr_err=TXN_ABORT( ltid )) != 0 ) {
 409                         rs->sr_text = "txn_abort (no-op) failed";
 410                 } else {
 411                         rs->sr_err = LDAP_X_NO_OPERATION;
 412                         ltid = NULL;
 413                         goto return_results;
 414                 }
 415
 416         } else {
 417                 struct berval nrdn;
 418
 419                 /* pick the RDN if not suffix; otherwise pick the entire DN */
 420                 if (pdn.bv_len) {
 421                         nrdn.bv_val = op->ora_e->e_nname.bv_val;
 422                         nrdn.bv_len = pdn.bv_val - op->ora_e->e_nname.bv_val - 1;
 423                 } else {
 424                         nrdn = op->ora_e->e_nname;
 425                 }
 426
 427                 bdb_cache_add( bdb, ei, op->ora_e, &nrdn, locker );
 428
 429                 if(( rs->sr_err=TXN_COMMIT( ltid, 0 )) != 0 ) {
 430                         rs->sr_text = "txn_commit failed";
 431                 } else {
 432                         rs->sr_err = LDAP_SUCCESS;
 433                 }
 434         }
 435
 436         ltid = NULL;
 437         op->o_private = NULL;
 438
 439         if ( rs->sr_err != LDAP_SUCCESS ) {
 440                 Debug( LDAP_DEBUG_TRACE,
 441                         LDAP_XSTRING(bdb_add) ": %s : %s (%d)\n",
 442                         rs->sr_text, db_strerror(rs->sr_err), rs->sr_err );
 443                 rs->sr_err = LDAP_OTHER;
 444                 goto return_results;
 445         }
 446
 447         Debug(LDAP_DEBUG_TRACE,
 448                 LDAP_XSTRING(bdb_add) ": added%s id=%08lx dn=\"%s\"\n",
 449                 op->o_noop ? " (no-op)" : "",
 450                 op->oq_add.rs_e->e_id, op->oq_add.rs_e->e_dn );
 451
 452         rs->sr_text = NULL;
 453         if( num_ctrls ) rs->sr_ctrls = ctrls;
 454
 455 return_results:
 456         send_ldap_result( op, rs );
 457         slap_graduate_commit_csn( op );
 458
 459         if( ltid != NULL ) {
 460                 TXN_ABORT( ltid );
 461         }
 462         op->o_private = NULL;
 463
 464         if( postread_ctrl != NULL && (*postread_ctrl) != NULL ) {
 465                 slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 466                 slap_sl_free( *postread_ctrl, op->o_tmpmemctx );
 467         }
 468
 469         if( rs->sr_err == LDAP_SUCCESS ) {
 470                 EntryInfo *ei = oe->e_private;
 471
 472                 /* We own the entry now, and it can be purged at will
 473                  * Check to make sure it's the same entry we entered with.
 474                  * Possibly a callback may have mucked with it, although
 475                  * in general callbacks should treat the entry as read-only.
 476                  */
 477                 if ( op->ora_e == oe )
 478                         op->ora_e = NULL;
 479                 ei->bei_state ^= CACHE_ENTRY_NOT_LINKED;
 480
 481                 if ( bdb->bi_txn_cp_kbyte ) {
 482                         TXN_CHECKPOINT( bdb->bi_dbenv,
 483                                 bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 484                 }
 485         }
 486         return rs->sr_err;
 487 }