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