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 2000-2005 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;
  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 #ifdef BDB_SUBENTRIES
  38         int subentry;
  39 #endif
  40         u_int32_t       locker = 0;
  41         DB_LOCK         lock;
  42
  43         int             num_retries = 0;
  44
  45         LDAPControl **postread_ctrl = NULL;
  46         LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
  47         int num_ctrls = 0;
  48
  49         Debug(LDAP_DEBUG_ARGS, "==> " LDAP_XSTRING(bdb_add) ": %s\n",
  50                 op->oq_add.rs_e->e_name.bv_val, 0, 0);
  51
  52         ctrls[num_ctrls] = 0;
  53
  54         /* check entry's schema */
  55         rs->sr_err = entry_schema_check( op->o_bd, op->oq_add.rs_e,
  56                 NULL, &rs->sr_text, textbuf, textlen );
  57         if ( rs->sr_err != LDAP_SUCCESS ) {
  58                 Debug( LDAP_DEBUG_TRACE,
  59                         LDAP_XSTRING(bdb_add) ": entry failed schema check: "
  60                         "%s (%d)\n", rs->sr_text, rs->sr_err, 0 );
  61                 goto return_results;
  62         }
  63
  64 #ifdef BDB_SUBENTRIES
  65         subentry = is_entry_subentry( op->oq_add.rs_e );
  66 #endif
  67
  68         /*
  69          * acquire an ID outside of the operation transaction
  70          * to avoid serializing adds.
  71          */
  72         rs->sr_err = bdb_next_id( op->o_bd, NULL, &op->oq_add.rs_e->e_id );
  73         if( rs->sr_err != 0 ) {
  74                 Debug( LDAP_DEBUG_TRACE,
  75                         LDAP_XSTRING(bdb_add) ": next_id failed (%d)\n",
  76                         rs->sr_err, 0, 0 );
  77                 rs->sr_err = LDAP_OTHER;
  78                 rs->sr_text = "internal error";
  79                 goto return_results;
  80         }
  81
  82         if( 0 ) {
  83 retry:  /* transaction retry */
  84                 if( p ) {
  85                         /* free parent and reader lock */
  86                         bdb_unlocked_cache_return_entry_r( &bdb->bi_cache, p );
  87                         p = NULL;
  88                 }
  89                 rs->sr_err = TXN_ABORT( ltid );
  90                 ltid = NULL;
  91                 op->o_private = NULL;
  92                 op->o_do_not_cache = opinfo.boi_acl_cache;
  93                 if( rs->sr_err != 0 ) {
  94                         rs->sr_err = LDAP_OTHER;
  95                         rs->sr_text = "internal error";
  96                         goto return_results;
  97                 }
  98                 ldap_pvt_thread_yield();
  99                 bdb_trans_backoff( ++num_retries );
 100         }
 101
 102         /* begin transaction */
 103         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid,
 104                 bdb->bi_db_opflags );
 105         rs->sr_text = NULL;
 106         if( rs->sr_err != 0 ) {
 107                 Debug( LDAP_DEBUG_TRACE,
 108                         LDAP_XSTRING(bdb_add) ": txn_begin failed: %s (%d)\n",
 109                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 110                 rs->sr_err = LDAP_OTHER;
 111                 rs->sr_text = "internal error";
 112                 goto return_results;
 113         }
 114
 115         locker = TXN_ID ( ltid );
 116
 117         opinfo.boi_bdb = op->o_bd;
 118         opinfo.boi_txn = ltid;
 119         opinfo.boi_locker = locker;
 120         opinfo.boi_err = 0;
 121         opinfo.boi_acl_cache = op->o_do_not_cache;
 122         op->o_private = &opinfo;
 123
 124         /*
 125          * Get the parent dn and see if the corresponding entry exists.
 126          */
 127         if ( be_issuffix( op->o_bd, &op->oq_add.rs_e->e_nname ) ) {
 128                 pdn = slap_empty_bv;
 129         } else {
 130                 dnParent( &op->oq_add.rs_e->e_nname, &pdn );
 131         }
 132
 133         /* get entry or parent */
 134         rs->sr_err = bdb_dn2entry( op, ltid, &op->ora_e->e_nname, &ei,
 135                 1, locker, &lock );
 136         switch( rs->sr_err ) {
 137         case 0:
 138                 rs->sr_err = LDAP_ALREADY_EXISTS;
 139                 goto return_results;
 140         case DB_NOTFOUND:
 141                 break;
 142         case DB_LOCK_DEADLOCK:
 143         case DB_LOCK_NOTGRANTED:
 144                 goto retry;
 145         case LDAP_BUSY:
 146                 rs->sr_text = "ldap server busy";
 147                 goto return_results;
 148         default:
 149                 rs->sr_err = LDAP_OTHER;
 150                 rs->sr_text = "internal error";
 151                 goto return_results;
 152         }
 153
 154         p = ei->bei_e;
 155         if ( p ) {
 156                 if ( !bvmatch( &pdn, &p->e_nname ) ) {
 157                         rs->sr_matched = ber_strdup_x( p->e_name.bv_val,
 158                                 op->o_tmpmemctx );
 159                         rs->sr_ref = is_entry_referral( p )
 160                                 ? get_entry_referrals( op, p )
 161                                 : NULL;
 162                         bdb_unlocked_cache_return_entry_r( &bdb->bi_cache, p );
 163                         p = NULL;
 164                         Debug( LDAP_DEBUG_TRACE,
 165                                 LDAP_XSTRING(bdb_add) ": parent "
 166                                 "does not exist\n", 0, 0, 0 );
 167
 168                         rs->sr_err = LDAP_REFERRAL;
 169                         send_ldap_result( op, rs );
 170
 171                         ber_bvarray_free( rs->sr_ref );
 172                         op->o_tmpfree( (char *)rs->sr_matched, op->o_tmpmemctx );
 173                         rs->sr_ref = NULL;
 174                         rs->sr_matched = NULL;
 175
 176                         goto done;
 177                 }
 178
 179                 rs->sr_err = access_allowed( op, p,
 180                         children, NULL, ACL_WRITE, NULL );
 181
 182                 if ( ! rs->sr_err ) {
 183                         switch( opinfo.boi_err ) {
 184                         case DB_LOCK_DEADLOCK:
 185                         case DB_LOCK_NOTGRANTED:
 186                                 goto retry;
 187                         }
 188
 189                         Debug( LDAP_DEBUG_TRACE,
 190                                 LDAP_XSTRING(bdb_add) ": no write access "
 191                                 "to parent\n", 0, 0, 0 );
 192                         rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 193                         rs->sr_text = "no write access to parent";
 194                         goto return_results;;
 195                 }
 196
 197 #ifdef BDB_SUBENTRIES
 198                 if ( is_entry_subentry( p ) ) {
 199                         /* parent is a subentry, don't allow add */
 200                         Debug( LDAP_DEBUG_TRACE,
 201                                 LDAP_XSTRING(bdb_add) ": parent is subentry\n",
 202                                 0, 0, 0 );
 203                         rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 204                         rs->sr_text = "parent is a subentry";
 205                         goto return_results;;
 206                 }
 207 #endif
 208                 if ( is_entry_alias( p ) ) {
 209                         /* parent is an alias, don't allow add */
 210                         Debug( LDAP_DEBUG_TRACE,
 211                                 LDAP_XSTRING(bdb_add) ": parent is alias\n",
 212                                 0, 0, 0 );
 213                         rs->sr_err = LDAP_ALIAS_PROBLEM;
 214                         rs->sr_text = "parent is an alias";
 215                         goto return_results;;
 216                 }
 217
 218                 if ( is_entry_referral( p ) ) {
 219                         /* parent is a referral, don't allow add */
 220                         rs->sr_matched = p->e_name.bv_val;
 221                         rs->sr_ref = get_entry_referrals( op, p );
 222
 223                         Debug( LDAP_DEBUG_TRACE,
 224                                 LDAP_XSTRING(bdb_add) ": parent is referral\n",
 225                                 0, 0, 0 );
 226
 227                         rs->sr_err = LDAP_REFERRAL;
 228                         send_ldap_result( op, rs );
 229
 230                         ber_bvarray_free( rs->sr_ref );
 231                         bdb_unlocked_cache_return_entry_r( &bdb->bi_cache, p );
 232                         rs->sr_ref = NULL;
 233                         rs->sr_matched = NULL;
 234                         p = NULL;
 235                         goto done;
 236                 }
 237
 238 #ifdef BDB_SUBENTRIES
 239                 if ( subentry ) {
 240                         /* FIXME: */
 241                         /* parent must be an administrative point of the required kind */
 242                 }
 243 #endif
 244
 245                 /* free parent and reader lock */
 246                 bdb_unlocked_cache_return_entry_r( &bdb->bi_cache, p );
 247                 p = NULL;
 248
 249         } else {
 250                 /*
 251                  * no parent!
 252                  *  if not attempting to add entry at suffix or with parent ""
 253                  */
 254                 if ((( !be_isroot( op ) && !be_shadow_update(op) )
 255                         || pdn.bv_len > 0 ) && !is_entry_glue( op->oq_add.rs_e ))
 256                 {
 257                         Debug( LDAP_DEBUG_TRACE,
 258                                 LDAP_XSTRING(bdb_add) ": %s denied\n",
 259                                 pdn.bv_len == 0 ? "suffix" : "entry at root",
 260                                 0, 0 );
 261                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 262                         goto return_results;
 263                 }
 264         }
 265
 266         if ( get_assert( op ) &&
 267                 ( test_filter( op, op->oq_add.rs_e, get_assertion( op ))
 268                         != LDAP_COMPARE_TRUE ))
 269         {
 270                 rs->sr_err = LDAP_ASSERTION_FAILED;
 271                 goto return_results;
 272         }
 273
 274         rs->sr_err = access_allowed( op, op->oq_add.rs_e,
 275                 entry, NULL, ACL_WRITE, NULL );
 276
 277         if ( ! rs->sr_err ) {
 278                 switch( opinfo.boi_err ) {
 279                 case DB_LOCK_DEADLOCK:
 280                 case DB_LOCK_NOTGRANTED:
 281                         goto retry;
 282                 }
 283
 284                 Debug( LDAP_DEBUG_TRACE,
 285                         LDAP_XSTRING(bdb_add) ": no write access to entry\n",
 286                         0, 0, 0 );
 287                 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 288                 rs->sr_text = "no write access to entry";
 289                 goto return_results;;
 290         }
 291
 292         /* nested transaction */
 293         rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, &lt2,
 294                 bdb->bi_db_opflags );
 295         rs->sr_text = NULL;
 296         if( rs->sr_err != 0 ) {
 297                 Debug( LDAP_DEBUG_TRACE,
 298                         LDAP_XSTRING(bdb_add) ": txn_begin(2) failed: "
 299                         "%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
 300                 rs->sr_err = LDAP_OTHER;
 301                 rs->sr_text = "internal error";
 302                 goto return_results;
 303         }
 304
 305         /* dn2id index */
 306         rs->sr_err = bdb_dn2id_add( op, lt2, ei, op->oq_add.rs_e );
 307         if ( rs->sr_err != 0 ) {
 308                 Debug( LDAP_DEBUG_TRACE,
 309                         LDAP_XSTRING(bdb_add) ": dn2id_add failed: %s (%d)\n",
 310                         db_strerror(rs->sr_err), rs->sr_err, 0 );
 311
 312                 switch( rs->sr_err ) {
 313                 case DB_LOCK_DEADLOCK:
 314                 case DB_LOCK_NOTGRANTED:
 315                         goto retry;
 316                 case DB_KEYEXIST:
 317                         rs->sr_err = LDAP_ALREADY_EXISTS;
 318                         break;
 319                 default:
 320                         rs->sr_err = LDAP_OTHER;
 321                 }
 322                 goto return_results;
 323         }
 324
 325         /* id2entry index */
 326         rs->sr_err = bdb_id2entry_add( op->o_bd, lt2, op->oq_add.rs_e );
 327         if ( rs->sr_err != 0 ) {
 328                 Debug( LDAP_DEBUG_TRACE,
 329                         LDAP_XSTRING(bdb_add) ": id2entry_add failed\n",
 330                         0, 0, 0 );
 331                 switch( rs->sr_err ) {
 332                 case DB_LOCK_DEADLOCK:
 333                 case DB_LOCK_NOTGRANTED:
 334                         goto retry;
 335                 default:
 336                         rs->sr_err = LDAP_OTHER;
 337                 }
 338                 rs->sr_text = "entry store failed";
 339                 goto return_results;
 340         }
 341
 342         /* attribute indexes */
 343         rs->sr_err = bdb_index_entry_add( op, lt2, op->oq_add.rs_e );
 344         if ( rs->sr_err != LDAP_SUCCESS ) {
 345                 Debug( LDAP_DEBUG_TRACE,
 346                         LDAP_XSTRING(bdb_add) ": index_entry_add failed\n",
 347                         0, 0, 0 );
 348                 switch( rs->sr_err ) {
 349                 case DB_LOCK_DEADLOCK:
 350                 case DB_LOCK_NOTGRANTED:
 351                         goto retry;
 352                 default:
 353                         rs->sr_err = LDAP_OTHER;
 354                 }
 355                 rs->sr_text = "index generation failed";
 356                 goto return_results;
 357         }
 358         if ( TXN_COMMIT( lt2, 0 ) != 0 ) {
 359                 rs->sr_err = LDAP_OTHER;
 360                 rs->sr_text = "txn_commit(2) failed";
 361                 goto return_results;
 362         }
 363
 364         /* post-read */
 365         if( op->o_postread ) {
 366                 if( postread_ctrl == NULL ) {
 367                         postread_ctrl = &ctrls[num_ctrls++];
 368                         ctrls[num_ctrls] = NULL;
 369                 }
 370                 if ( slap_read_controls( op, rs, op->oq_add.rs_e,
 371                         &slap_post_read_bv, postread_ctrl ) )
 372                 {
 373                         Debug( LDAP_DEBUG_TRACE,
 374                                 "<=- " LDAP_XSTRING(bdb_add) ": post-read "
 375                                 "failed!\n", 0, 0, 0 );
 376                         goto return_results;
 377                 }
 378         }
 379
 380         if ( op->o_noop ) {
 381                 if (( rs->sr_err=TXN_ABORT( ltid )) != 0 ) {
 382                         rs->sr_text = "txn_abort (no-op) failed";
 383                 } else {
 384                         rs->sr_err = LDAP_NO_OPERATION;
 385                         goto return_results;
 386                 }
 387
 388         } else {
 389                 struct berval nrdn;
 390                 Entry *e = entry_dup( op->ora_e );
 391
 392                 if (pdn.bv_len) {
 393                         nrdn.bv_val = e->e_nname.bv_val;
 394                         nrdn.bv_len = pdn.bv_val - op->ora_e->e_nname.bv_val - 1;
 395                 } else {
 396                         nrdn = e->e_nname;
 397                 }
 398
 399                 bdb_cache_add( bdb, ei, e, &nrdn, locker );
 400
 401                 if(( rs->sr_err=TXN_COMMIT( ltid, 0 )) != 0 ) {
 402                         rs->sr_text = "txn_commit failed";
 403                 } else {
 404                         rs->sr_err = LDAP_SUCCESS;
 405                 }
 406         }
 407
 408         ltid = NULL;
 409         op->o_private = NULL;
 410
 411         if ( rs->sr_err != LDAP_SUCCESS ) {
 412                 Debug( LDAP_DEBUG_TRACE,
 413                         LDAP_XSTRING(bdb_add) ": %s : %s (%d)\n",
 414                         rs->sr_text, db_strerror(rs->sr_err), rs->sr_err );
 415                 rs->sr_err = LDAP_OTHER;
 416                 goto return_results;
 417         }
 418
 419         Debug(LDAP_DEBUG_TRACE,
 420                 LDAP_XSTRING(bdb_add) ": added%s id=%08lx dn=\"%s\"\n",
 421                 op->o_noop ? " (no-op)" : "",
 422                 op->oq_add.rs_e->e_id, op->oq_add.rs_e->e_dn );
 423
 424         rs->sr_text = NULL;
 425         if( num_ctrls ) rs->sr_ctrls = ctrls;
 426
 427 return_results:
 428         send_ldap_result( op, rs );
 429
 430         if( rs->sr_err == LDAP_SUCCESS && bdb->bi_txn_cp ) {
 431                 ldap_pvt_thread_yield();
 432                 TXN_CHECKPOINT( bdb->bi_dbenv,
 433                         bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 434         }
 435
 436 done:
 437         if( ltid != NULL ) {
 438                 TXN_ABORT( ltid );
 439                 op->o_private = NULL;
 440         }
 441
 442         if( postread_ctrl != NULL ) {
 443                 slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
 444                 slap_sl_free( *postread_ctrl, op->o_tmpmemctx );
 445         }
 446         return rs->sr_err;
 447 }