git.sur5r.net Git - openldap/blob - servers/slapd/back-bdb/add.c

   1 /* add.c - ldap BerkeleyDB back-end add routine */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
   5  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   6  */
   7
   8 #include "portable.h"
   9
  10 #include <stdio.h>
  11 #include <ac/string.h>
  12
  13 #include "back-bdb.h"
  14 #include "external.h"
  15
  16 int
  17 bdb_add(
  18         BackendDB       *be,
  19         Connection      *conn,
  20         Operation       *op,
  21         Entry   *e )
  22 {
  23         struct bdb_info *bdb = (struct bdb_info *) be->be_private;
  24         struct berval   pdn;
  25         Entry           *p = NULL;
  26         int                     rc;
  27         const char      *text;
  28         char textbuf[SLAP_TEXT_BUFLEN];
  29         size_t textlen = sizeof textbuf;
  30         AttributeDescription *children = slap_schema.si_ad_children;
  31         DB_TXN          *ltid = NULL;
  32         struct bdb_op_info opinfo;
  33 #ifdef BDB_SUBENTRIES
  34         int subentry;
  35 #endif
  36 #if 0
  37         u_int32_t       lockid;
  38         DB_LOCK         lock;
  39 #endif
  40
  41         Debug(LDAP_DEBUG_ARGS, "==> bdb_add: %s\n", e->e_dn, 0, 0);
  42
  43         /* check entry's schema */
  44         rc = entry_schema_check( be, e, NULL, &text, textbuf, textlen );
  45         if ( rc != LDAP_SUCCESS ) {
  46                 Debug( LDAP_DEBUG_TRACE,
  47                         "bdb_add: entry failed schema check: %s (%d)\n",
  48                         text, rc, 0 );
  49                 goto return_results;
  50         }
  51
  52 #ifdef BDB_SUBENTRIES
  53         subentry = is_entry_subentry( e );
  54 #endif
  55
  56         /*
  57          * acquire an ID outside of the operation transaction
  58          * to avoid serializing adds.
  59          */
  60         rc = bdb_next_id( be, NULL, &e->e_id );
  61         if( rc != 0 ) {
  62                 Debug( LDAP_DEBUG_TRACE,
  63                         "bdb_add: next_id failed (%d)\n",
  64                         rc, 0, 0 );
  65                 rc = LDAP_OTHER;
  66                 text = "internal error";
  67                 goto return_results;
  68         }
  69
  70         if( 0 ) {
  71 retry:  /* transaction retry */
  72                 rc = txn_abort( ltid );
  73                 ltid = NULL;
  74                 op->o_private = NULL;
  75                 if( rc != 0 ) {
  76                         rc = LDAP_OTHER;
  77                         text = "internal error";
  78                         goto return_results;
  79                 }
  80                 ldap_pvt_thread_yield();
  81         }
  82
  83         /* begin transaction */
  84         rc = txn_begin( bdb->bi_dbenv, NULL, &ltid,
  85                 bdb->bi_db_opflags );
  86         text = NULL;
  87         if( rc != 0 ) {
  88                 Debug( LDAP_DEBUG_TRACE,
  89                         "bdb_add: txn_begin failed: %s (%d)\n",
  90                         db_strerror(rc), rc, 0 );
  91                 rc = LDAP_OTHER;
  92                 text = "internal error";
  93                 goto return_results;
  94         }
  95 #if 0
  96         lockid = TXN_ID( ltid );
  97 #endif
  98
  99         opinfo.boi_bdb = be;
 100         opinfo.boi_txn = ltid;
 101         opinfo.boi_err = 0;
 102         op->o_private = &opinfo;
 103
 104         /*
 105          * Get the parent dn and see if the corresponding entry exists.
 106          * If the parent does not exist, only allow the "root" user to
 107          * add the entry.
 108          */
 109         if ( be_issuffix( be, &e->e_nname ) ) {
 110                 pdn = slap_empty_bv;
 111         } else {
 112                 dnParent( &e->e_nname, &pdn );
 113         }
 114
 115         if( pdn.bv_len != 0 ) {
 116                 Entry *matched = NULL;
 117
 118 #if 0
 119                 if ( ltid ) {
 120                         DBT obj;
 121                         obj.data = pdn.bv_val-1;
 122                         obj.size = pdn.bv_len+1;
 123                         rc = LOCK_GET( bdb->bi_dbenv, lockid, 0, &obj,
 124                                 DB_LOCK_WRITE, &lock);
 125                 }
 126 #endif
 127
 128                 /* get parent */
 129                 rc = bdb_dn2entry_r( be, ltid, &pdn, &p, &matched, 0 );
 130
 131                 switch( rc ) {
 132                 case 0:
 133                 case DB_NOTFOUND:
 134                         break;
 135                 case DB_LOCK_DEADLOCK:
 136                 case DB_LOCK_NOTGRANTED:
 137                         goto retry;
 138                 default:
 139                         rc = LDAP_OTHER;
 140                         text = "internal error";
 141                         goto return_results;
 142                 }
 143
 144                 if ( p == NULL ) {
 145                         char *matched_dn = NULL;
 146                         BerVarray refs;
 147
 148                         if ( matched != NULL ) {
 149                                 matched_dn = ch_strdup( matched->e_dn );
 150                                 refs = is_entry_referral( matched )
 151                                         ? get_entry_referrals( be, conn, op, matched )
 152                                         : NULL;
 153                                 bdb_cache_return_entry_r(&bdb->bi_cache, matched);
 154                                 matched = NULL;
 155
 156                         } else {
 157                                 refs = referral_rewrite( default_referral,
 158                                         NULL, &e->e_name, LDAP_SCOPE_DEFAULT );
 159                         }
 160
 161                         Debug( LDAP_DEBUG_TRACE, "bdb_add: parent does not exist\n",
 162                                 0, 0, 0 );
 163
 164                         send_ldap_result( conn, op, rc = LDAP_REFERRAL,
 165                                 matched_dn, NULL, refs, NULL );
 166
 167                         ber_bvarray_free( refs );
 168                         ch_free( matched_dn );
 169
 170                         goto done;
 171                 }
 172
 173                 rc = access_allowed( be, conn, op, p,
 174                         children, NULL, ACL_WRITE );
 175
 176                 switch( opinfo.boi_err ) {
 177                 case DB_LOCK_DEADLOCK:
 178                 case DB_LOCK_NOTGRANTED:
 179                         /* free parent and reader lock */
 180                         bdb_cache_return_entry_r( &bdb->bi_cache, p );
 181                         p = NULL;
 182                         goto retry;
 183                 }
 184
 185                 if ( ! rc ) {
 186                         Debug( LDAP_DEBUG_TRACE, "bdb_add: no write access to parent\n",
 187                                 0, 0, 0 );
 188                         rc = LDAP_INSUFFICIENT_ACCESS;
 189                         text = "no write access to parent";
 190                         goto return_results;;
 191                 }
 192
 193 #ifdef BDB_SUBENTRIES
 194                 if ( is_entry_subentry( p ) ) {
 195                         /* parent is a subentry, don't allow add */
 196                         Debug( LDAP_DEBUG_TRACE, "bdb_add: parent is subentry\n",
 197                                 0, 0, 0 );
 198                         rc = LDAP_OBJECT_CLASS_VIOLATION;
 199                         text = "parent is a subentry";
 200                         goto return_results;;
 201                 }
 202 #endif
 203 #ifdef BDB_ALIASES
 204                 if ( is_entry_alias( p ) ) {
 205                         /* parent is an alias, don't allow add */
 206                         Debug( LDAP_DEBUG_TRACE, "bdb_add: parent is alias\n",
 207                                 0, 0, 0 );
 208                         rc = LDAP_ALIAS_PROBLEM;
 209                         text = "parent is an alias";
 210                         goto return_results;;
 211                 }
 212 #endif
 213
 214                 if ( is_entry_referral( p ) ) {
 215                         /* parent is a referral, don't allow add */
 216                         char *matched_dn = p->e_dn;
 217                         BerVarray refs = get_entry_referrals( be, conn, op, p );
 218
 219                         Debug( LDAP_DEBUG_TRACE, "bdb_add: parent is referral\n",
 220                                 0, 0, 0 );
 221
 222                         send_ldap_result( conn, op, rc = LDAP_REFERRAL,
 223                                 matched_dn, NULL, refs, NULL );
 224
 225                         ber_bvarray_free( refs );
 226                         bdb_cache_return_entry_r( &bdb->bi_cache, p );
 227                         p = NULL;
 228                         goto done;
 229                 }
 230
 231 #ifdef BDB_SUBENTRIES
 232                 if ( subentry ) {
 233                         /* FIXME: */
 234                         /* parent must be an administrative point of the required kind */
 235                 }
 236 #endif
 237
 238                 /* free parent and reader lock */
 239                 bdb_cache_return_entry_r( &bdb->bi_cache, p );
 240                 p = NULL;
 241
 242         } else {
 243                 /*
 244                  * no parent!
 245                  *      must be adding entry at suffix or with parent ""
 246                  */
 247                 if ( !be_isroot( be, &op->o_ndn )) {
 248                         if ( be_issuffix( be, (struct berval *)&slap_empty_bv )
 249                                 || be_isupdate( be, &op->o_ndn ) ) {
 250                                 p = (Entry *)&slap_entry_root;
 251
 252                                 /* check parent for "children" acl */
 253                                 rc = access_allowed( be, conn, op, p,
 254                                         children, NULL, ACL_WRITE );
 255                                 p = NULL;
 256
 257                                 switch( opinfo.boi_err ) {
 258                                 case DB_LOCK_DEADLOCK:
 259                                 case DB_LOCK_NOTGRANTED:
 260                                         goto retry;
 261                                 }
 262
 263                                 if ( ! rc ) {
 264                                         Debug( LDAP_DEBUG_TRACE,
 265                                                 "bdb_add: no write access to parent\n",
 266                                                 0, 0, 0 );
 267                                         rc = LDAP_INSUFFICIENT_ACCESS;
 268                                         text = "no write access to parent";
 269                                         goto return_results;;
 270                                 }
 271
 272                         } else {
 273                                 Debug( LDAP_DEBUG_TRACE, "bdb_add: %s denied\n",
 274                                         pdn.bv_len == 0 ? "suffix" : "entry at root",
 275                                         0, 0 );
 276                                 rc = LDAP_INSUFFICIENT_ACCESS;
 277                                 goto return_results;
 278                         }
 279                 }
 280
 281 #ifdef BDB_SUBENTRIES
 282                 if( subentry ) {
 283                         Debug( LDAP_DEBUG_TRACE,
 284                                 "bdb_add: no parent, cannot add subentry\n",
 285                                 0, 0, 0 );
 286                         rc = LDAP_INSUFFICIENT_ACCESS;
 287                         text = "no parent, cannot add subentry";
 288                         goto return_results;;
 289                 }
 290 #endif
 291 #if 0
 292                 if ( ltid ) {
 293                         DBT obj;
 294                         obj.data = ",";
 295                         obj.size = 1;
 296                         rc = LOCK_GET( bdb->bi_dbenv, lockid, 0, &obj,
 297                                 DB_LOCK_WRITE, &lock);
 298                 }
 299 #endif
 300         }
 301
 302         /* dn2id index */
 303         rc = bdb_dn2id_add( be, ltid, &pdn, e );
 304         if ( rc != 0 ) {
 305                 Debug( LDAP_DEBUG_TRACE, "bdb_add: dn2id_add failed: %s (%d)\n",
 306                         db_strerror(rc), rc, 0 );
 307
 308                 switch( rc ) {
 309                 case DB_LOCK_DEADLOCK:
 310                 case DB_LOCK_NOTGRANTED:
 311                         goto retry;
 312                 case DB_KEYEXIST:
 313                         rc = LDAP_ALREADY_EXISTS;
 314                         break;
 315                 default:
 316                         rc = LDAP_OTHER;
 317                 }
 318                 goto return_results;
 319         }
 320
 321         /* id2entry index */
 322         rc = bdb_id2entry_add( be, ltid, e );
 323         if ( rc != 0 ) {
 324                 Debug( LDAP_DEBUG_TRACE, "bdb_add: id2entry_add failed\n",
 325                         0, 0, 0 );
 326                 switch( rc ) {
 327                 case DB_LOCK_DEADLOCK:
 328                 case DB_LOCK_NOTGRANTED:
 329                         goto retry;
 330                 default:
 331                         rc = LDAP_OTHER;
 332                 }
 333                 text = "entry store failed";
 334                 goto return_results;
 335         }
 336
 337         /* attribute indexes */
 338         rc = bdb_index_entry_add( be, ltid, e, e->e_attrs );
 339         if ( rc != LDAP_SUCCESS ) {
 340                 Debug( LDAP_DEBUG_TRACE, "bdb_add: index_entry_add failed\n",
 341                         0, 0, 0 );
 342                 switch( rc ) {
 343                 case DB_LOCK_DEADLOCK:
 344                 case DB_LOCK_NOTGRANTED:
 345                         goto retry;
 346                 default:
 347                         rc = LDAP_OTHER;
 348                 }
 349                 text = "index generation failed";
 350                 goto return_results;
 351         }
 352
 353         if( op->o_noop ) {
 354                 rc = txn_abort( ltid );
 355         } else {
 356                 rc = txn_commit( ltid, 0 );
 357         }
 358         ltid = NULL;
 359         op->o_private = NULL;
 360
 361         if( rc != 0 ) {
 362                 Debug( LDAP_DEBUG_TRACE,
 363                         "bdb_add: txn_%s failed: %s (%d)\n",
 364                         op->o_noop ? "abort (no-op)" : "commit",
 365                         db_strerror(rc), rc );
 366                 rc = LDAP_OTHER;
 367                 text = "commit failed";
 368
 369         } else {
 370                 /* add the entry to the entry cache */
 371                 /* we should add to cache only upon free of txn-abort */
 372                 if (!op->o_noop &&
 373                         bdb_cache_add_entry_rw(&bdb->bi_cache, e, CACHE_WRITE_LOCK) != 0)
 374                 {
 375                         text = "cache add failed";
 376                         goto return_results;
 377                 }
 378
 379                 Debug( LDAP_DEBUG_TRACE,
 380                         "bdb_add: added%s id=%08lx dn=\"%s\"\n",
 381                         op->o_noop ? " (no-op)" : "",
 382                         e->e_id, e->e_dn );
 383                 rc = LDAP_SUCCESS;
 384                 text = NULL;
 385         }
 386
 387         bdb_cache_entry_commit( e );
 388
 389 return_results:
 390         send_ldap_result( conn, op, rc,
 391                 NULL, text, NULL, NULL );
 392
 393         if( rc == LDAP_SUCCESS && bdb->bi_txn_cp ) {
 394                 ldap_pvt_thread_yield();
 395                 TXN_CHECKPOINT( bdb->bi_dbenv,
 396                         bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 397         }
 398
 399 done:
 400
 401         if( ltid != NULL ) {
 402                 txn_abort( ltid );
 403                 op->o_private = NULL;
 404         }
 405
 406         return rc;
 407 }