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         if( bdb->bi_txn ) {
  81                 rc = txn_begin( bdb->bi_dbenv, NULL, &ltid,
  82                         bdb->bi_db_opflags );
  83                 text = NULL;
  84                 if( rc != 0 ) {
  85                         Debug( LDAP_DEBUG_TRACE,
  86                                 "bdb_add: txn_begin failed: %s (%d)\n",
  87                                 db_strerror(rc), rc, 0 );
  88                         rc = LDAP_OTHER;
  89                         text = "internal error";
  90                         goto return_results;
  91                 }
  92 #if 0
  93                 lockid = TXN_ID( ltid );
  94 #endif
  95         }
  96
  97         opinfo.boi_bdb = be;
  98         opinfo.boi_txn = ltid;
  99         opinfo.boi_err = 0;
 100         op->o_private = &opinfo;
 101
 102         /*
 103          * Get the parent dn and see if the corresponding entry exists.
 104          * If the parent does not exist, only allow the "root" user to
 105          * add the entry.
 106          */
 107         if ( be_issuffix( be, &e->e_nname ) ) {
 108                 pdn = slap_empty_bv;
 109         } else {
 110                 rc = dnParent( &e->e_nname, &pdn );
 111                 if ( rc != LDAP_SUCCESS ) {
 112                         text = "internal error";
 113                         goto return_results;
 114                 }
 115         }
 116
 117         if( pdn.bv_len != 0 ) {
 118                 Entry *matched = NULL;
 119
 120 #if 0
 121                 if ( ltid ) {
 122                         DBT obj;
 123                         obj.data = pdn.bv_val-1;
 124                         obj.size = pdn.bv_len+1;
 125                         rc = LOCK_GET( bdb->bi_dbenv, lockid, 0, &obj,
 126                                 DB_LOCK_WRITE, &lock);
 127                 }
 128 #endif
 129
 130                 /* get parent */
 131                 rc = bdb_dn2entry_r( be, ltid, &pdn, &p, &matched, 0 );
 132
 133                 switch( rc ) {
 134                 case 0:
 135                 case DB_NOTFOUND:
 136                         break;
 137                 case DB_LOCK_DEADLOCK:
 138                 case DB_LOCK_NOTGRANTED:
 139                         goto retry;
 140                 default:
 141                         rc = LDAP_OTHER;
 142                         text = "internal error";
 143                         goto return_results;
 144                 }
 145
 146                 if ( p == NULL ) {
 147                         char *matched_dn = NULL;
 148                         BerVarray refs;
 149
 150                         if ( matched != NULL ) {
 151                                 matched_dn = ch_strdup( matched->e_dn );
 152                                 refs = is_entry_referral( matched )
 153                                         ? get_entry_referrals( be, conn, op, matched )
 154                                         : NULL;
 155                                 bdb_cache_return_entry_r(&bdb->bi_cache, matched);
 156                                 matched = NULL;
 157
 158                         } else {
 159                                 refs = referral_rewrite( default_referral,
 160                                         NULL, &e->e_name, LDAP_SCOPE_DEFAULT );
 161                         }
 162
 163                         Debug( LDAP_DEBUG_TRACE, "bdb_add: parent does not exist\n",
 164                                 0, 0, 0 );
 165
 166                         send_ldap_result( conn, op, rc = LDAP_REFERRAL,
 167                                 matched_dn, NULL, refs, NULL );
 168
 169                         ber_bvarray_free( refs );
 170                         ch_free( matched_dn );
 171
 172                         goto done;
 173                 }
 174
 175                 rc = access_allowed( be, conn, op, p,
 176                         children, NULL, ACL_WRITE );
 177
 178                 switch( opinfo.boi_err ) {
 179                 case DB_LOCK_DEADLOCK:
 180                 case DB_LOCK_NOTGRANTED:
 181                         /* free parent and reader lock */
 182                         bdb_cache_return_entry_r( &bdb->bi_cache, p );
 183                         p = NULL;
 184                         goto retry;
 185                 }
 186
 187                 if ( ! rc ) {
 188                         Debug( LDAP_DEBUG_TRACE, "bdb_add: no write access to parent\n",
 189                                 0, 0, 0 );
 190                         rc = LDAP_INSUFFICIENT_ACCESS;
 191                         text = "no write access to parent";
 192                         goto return_results;;
 193                 }
 194
 195                 if ( is_entry_subentry( p ) ) {
 196                         /* parent is a subentry, don't allow add */
 197                         Debug( LDAP_DEBUG_TRACE, "bdb_add: parent is subentry\n",
 198                                 0, 0, 0 );
 199                         rc = LDAP_OBJECT_CLASS_VIOLATION;
 200                         text = "parent is a subentry";
 201                         goto return_results;;
 202                 }
 203
 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
 213                 if ( is_entry_referral( p ) ) {
 214                         /* parent is a referral, don't allow add */
 215                         char *matched_dn = p->e_dn;
 216                         BerVarray refs = get_entry_referrals( be, conn, op, p );
 217
 218                         Debug( LDAP_DEBUG_TRACE, "bdb_add: parent is referral\n",
 219                                 0, 0, 0 );
 220
 221                         send_ldap_result( conn, op, rc = LDAP_REFERRAL,
 222                                 matched_dn, NULL, refs, NULL );
 223
 224                         ber_bvarray_free( refs );
 225                         bdb_cache_return_entry_r( &bdb->bi_cache, p );
 226                         p = NULL;
 227                         goto done;
 228                 }
 229
 230                 if ( subentry ) {
 231                         /* FIXME: */
 232                         /* parent must be an administrative point of the required kind */
 233                 }
 234
 235                 /* free parent and reader lock */
 236                 bdb_cache_return_entry_r( &bdb->bi_cache, p );
 237                 p = NULL;
 238
 239         } else {
 240                 /*
 241                  * no parent!
 242                  *      must be adding entry at suffix or with parent ""
 243                  */
 244                 if ( !be_isroot( be, &op->o_ndn )) {
 245                         if ( be_issuffix( be, (struct berval *)&slap_empty_bv )
 246                                 || be_isupdate( be, &op->o_ndn ) ) {
 247                                 p = (Entry *)&slap_entry_root;
 248
 249                                 /* check parent for "children" acl */
 250                                 rc = access_allowed( be, conn, op, p,
 251                                         children, NULL, ACL_WRITE );
 252                                 p = NULL;
 253
 254                                 switch( opinfo.boi_err ) {
 255                                 case DB_LOCK_DEADLOCK:
 256                                 case DB_LOCK_NOTGRANTED:
 257                                         goto retry;
 258                                 }
 259
 260                                 if ( ! rc ) {
 261                                         Debug( LDAP_DEBUG_TRACE,
 262                                                 "bdb_add: no write access to parent\n",
 263                                                 0, 0, 0 );
 264                                         rc = LDAP_INSUFFICIENT_ACCESS;
 265                                         text = "no write access to parent";
 266                                         goto return_results;;
 267                                 }
 268
 269                         } else {
 270                                 Debug( LDAP_DEBUG_TRACE, "bdb_add: %s denied\n",
 271                                         pdn.bv_len == 0 ? "suffix" : "entry at root",
 272                                         0, 0 );
 273                                 rc = LDAP_INSUFFICIENT_ACCESS;
 274                                 goto return_results;
 275                         }
 276                 }
 277
 278                 if( subentry ) {
 279                         Debug( LDAP_DEBUG_TRACE,
 280                                 "bdb_add: no parent, cannot add subentry\n",
 281                                 0, 0, 0 );
 282                         rc = LDAP_INSUFFICIENT_ACCESS;
 283                         text = "no parent, cannot add subentry";
 284                         goto return_results;;
 285                 }
 286 #if 0
 287                 if ( ltid ) {
 288                         DBT obj;
 289                         obj.data = ",";
 290                         obj.size = 1;
 291                         rc = LOCK_GET( bdb->bi_dbenv, lockid, 0, &obj,
 292                                 DB_LOCK_WRITE, &lock);
 293                 }
 294 #endif
 295         }
 296
 297         /* dn2id index */
 298         rc = bdb_dn2id_add( be, ltid, &pdn, e );
 299         if ( rc != 0 ) {
 300                 Debug( LDAP_DEBUG_TRACE, "bdb_add: dn2id_add failed: %s (%d)\n",
 301                         db_strerror(rc), rc, 0 );
 302
 303                 switch( rc ) {
 304                 case DB_LOCK_DEADLOCK:
 305                 case DB_LOCK_NOTGRANTED:
 306                         goto retry;
 307                 case DB_KEYEXIST:
 308                         rc = LDAP_ALREADY_EXISTS;
 309                         break;
 310                 default:
 311                         rc = LDAP_OTHER;
 312                 }
 313                 goto return_results;
 314         }
 315
 316         /* id2entry index */
 317         rc = bdb_id2entry_add( be, ltid, e );
 318         if ( rc != 0 ) {
 319                 Debug( LDAP_DEBUG_TRACE, "bdb_add: id2entry_add failed\n",
 320                         0, 0, 0 );
 321                 switch( rc ) {
 322                 case DB_LOCK_DEADLOCK:
 323                 case DB_LOCK_NOTGRANTED:
 324                         goto retry;
 325                 default:
 326                         rc = LDAP_OTHER;
 327                 }
 328                 text = "entry store failed";
 329                 goto return_results;
 330         }
 331
 332         /* attribute indexes */
 333         rc = bdb_index_entry_add( be, ltid, e, e->e_attrs );
 334         if ( rc != LDAP_SUCCESS ) {
 335                 Debug( LDAP_DEBUG_TRACE, "bdb_add: index_entry_add failed\n",
 336                         0, 0, 0 );
 337                 switch( rc ) {
 338                 case DB_LOCK_DEADLOCK:
 339                 case DB_LOCK_NOTGRANTED:
 340                         goto retry;
 341                 default:
 342                         rc = LDAP_OTHER;
 343                 }
 344                 text = "index generation failed";
 345                 goto return_results;
 346         }
 347
 348         if( bdb->bi_txn ) {
 349                 rc = txn_commit( ltid, 0 );
 350         }
 351         ltid = NULL;
 352         op->o_private = NULL;
 353
 354         if( rc != 0 ) {
 355                 Debug( LDAP_DEBUG_TRACE,
 356                         "bdb_add: txn_commit failed: %s (%d)\n",
 357                         db_strerror(rc), rc, 0 );
 358                 rc = LDAP_OTHER;
 359                 text = "commit failed";
 360
 361         } else {
 362                 /* add the entry to the entry cache */
 363                 /* we should add to cache only upon free of txn-abort */
 364                 if (bdb_cache_add_entry_rw(&bdb->bi_cache, e, CACHE_WRITE_LOCK) != 0) {
 365                         text = "cache add failed";
 366                         goto return_results;
 367                 }
 368
 369                 Debug( LDAP_DEBUG_TRACE,
 370                         "bdb_add: added id=%08lx dn=\"%s\"\n",
 371                         e->e_id, e->e_dn, 0 );
 372                 rc = LDAP_SUCCESS;
 373                 text = NULL;
 374         }
 375
 376         bdb_cache_entry_commit (e);
 377
 378 return_results:
 379         send_ldap_result( conn, op, rc,
 380                 NULL, text, NULL, NULL );
 381
 382         if( rc == LDAP_SUCCESS && bdb->bi_txn_cp ) {
 383                 ldap_pvt_thread_yield();
 384                 TXN_CHECKPOINT( bdb->bi_dbenv,
 385                         bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 386         }
 387
 388 done:
 389
 390         if( ltid != NULL ) {
 391                 txn_abort( ltid );
 392                 op->o_private = NULL;
 393         }
 394
 395         return rc;
 396 }