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                 dnParent( &e->e_nname, &pdn );
 111         }
 112
 113         if( pdn.bv_len != 0 ) {
 114                 Entry *matched = NULL;
 115
 116 #if 0
 117                 if ( ltid ) {
 118                         DBT obj;
 119                         obj.data = pdn.bv_val-1;
 120                         obj.size = pdn.bv_len+1;
 121                         rc = LOCK_GET( bdb->bi_dbenv, lockid, 0, &obj,
 122                                 DB_LOCK_WRITE, &lock);
 123                 }
 124 #endif
 125
 126                 /* get parent */
 127                 rc = bdb_dn2entry_r( be, ltid, &pdn, &p, &matched, 0 );
 128
 129                 switch( rc ) {
 130                 case 0:
 131                 case DB_NOTFOUND:
 132                         break;
 133                 case DB_LOCK_DEADLOCK:
 134                 case DB_LOCK_NOTGRANTED:
 135                         goto retry;
 136                 default:
 137                         rc = LDAP_OTHER;
 138                         text = "internal error";
 139                         goto return_results;
 140                 }
 141
 142                 if ( p == NULL ) {
 143                         char *matched_dn = NULL;
 144                         BerVarray refs;
 145
 146                         if ( matched != NULL ) {
 147                                 matched_dn = ch_strdup( matched->e_dn );
 148                                 refs = is_entry_referral( matched )
 149                                         ? get_entry_referrals( be, conn, op, matched )
 150                                         : NULL;
 151                                 bdb_cache_return_entry_r(&bdb->bi_cache, matched);
 152                                 matched = NULL;
 153
 154                         } else {
 155                                 refs = referral_rewrite( default_referral,
 156                                         NULL, &e->e_name, LDAP_SCOPE_DEFAULT );
 157                         }
 158
 159                         Debug( LDAP_DEBUG_TRACE, "bdb_add: parent does not exist\n",
 160                                 0, 0, 0 );
 161
 162                         send_ldap_result( conn, op, rc = LDAP_REFERRAL,
 163                                 matched_dn, NULL, refs, NULL );
 164
 165                         ber_bvarray_free( refs );
 166                         ch_free( matched_dn );
 167
 168                         goto done;
 169                 }
 170
 171                 rc = access_allowed( be, conn, op, p,
 172                         children, NULL, ACL_WRITE );
 173
 174                 switch( opinfo.boi_err ) {
 175                 case DB_LOCK_DEADLOCK:
 176                 case DB_LOCK_NOTGRANTED:
 177                         /* free parent and reader lock */
 178                         bdb_cache_return_entry_r( &bdb->bi_cache, p );
 179                         p = NULL;
 180                         goto retry;
 181                 }
 182
 183                 if ( ! rc ) {
 184                         Debug( LDAP_DEBUG_TRACE, "bdb_add: no write access to parent\n",
 185                                 0, 0, 0 );
 186                         rc = LDAP_INSUFFICIENT_ACCESS;
 187                         text = "no write access to parent";
 188                         goto return_results;;
 189                 }
 190
 191                 if ( is_entry_subentry( p ) ) {
 192                         /* parent is a subentry, don't allow add */
 193                         Debug( LDAP_DEBUG_TRACE, "bdb_add: parent is subentry\n",
 194                                 0, 0, 0 );
 195                         rc = LDAP_OBJECT_CLASS_VIOLATION;
 196                         text = "parent is a subentry";
 197                         goto return_results;;
 198                 }
 199
 200                 if ( is_entry_alias( p ) ) {
 201                         /* parent is an alias, don't allow add */
 202                         Debug( LDAP_DEBUG_TRACE, "bdb_add: parent is alias\n",
 203                                 0, 0, 0 );
 204                         rc = LDAP_ALIAS_PROBLEM;
 205                         text = "parent is an alias";
 206                         goto return_results;;
 207                 }
 208
 209                 if ( is_entry_referral( p ) ) {
 210                         /* parent is a referral, don't allow add */
 211                         char *matched_dn = p->e_dn;
 212                         BerVarray refs = get_entry_referrals( be, conn, op, p );
 213
 214                         Debug( LDAP_DEBUG_TRACE, "bdb_add: parent is referral\n",
 215                                 0, 0, 0 );
 216
 217                         send_ldap_result( conn, op, rc = LDAP_REFERRAL,
 218                                 matched_dn, NULL, refs, NULL );
 219
 220                         ber_bvarray_free( refs );
 221                         bdb_cache_return_entry_r( &bdb->bi_cache, p );
 222                         p = NULL;
 223                         goto done;
 224                 }
 225
 226                 if ( subentry ) {
 227                         /* FIXME: */
 228                         /* parent must be an administrative point of the required kind */
 229                 }
 230
 231                 /* free parent and reader lock */
 232                 bdb_cache_return_entry_r( &bdb->bi_cache, p );
 233                 p = NULL;
 234
 235         } else {
 236                 /*
 237                  * no parent!
 238                  *      must be adding entry at suffix or with parent ""
 239                  */
 240                 if ( !be_isroot( be, &op->o_ndn )) {
 241                         if ( be_issuffix( be, (struct berval *)&slap_empty_bv )
 242                                 || be_isupdate( be, &op->o_ndn ) ) {
 243                                 p = (Entry *)&slap_entry_root;
 244
 245                                 /* check parent for "children" acl */
 246                                 rc = access_allowed( be, conn, op, p,
 247                                         children, NULL, ACL_WRITE );
 248                                 p = NULL;
 249
 250                                 switch( opinfo.boi_err ) {
 251                                 case DB_LOCK_DEADLOCK:
 252                                 case DB_LOCK_NOTGRANTED:
 253                                         goto retry;
 254                                 }
 255
 256                                 if ( ! rc ) {
 257                                         Debug( LDAP_DEBUG_TRACE,
 258                                                 "bdb_add: no write access to parent\n",
 259                                                 0, 0, 0 );
 260                                         rc = LDAP_INSUFFICIENT_ACCESS;
 261                                         text = "no write access to parent";
 262                                         goto return_results;;
 263                                 }
 264
 265                         } else {
 266                                 Debug( LDAP_DEBUG_TRACE, "bdb_add: %s denied\n",
 267                                         pdn.bv_len == 0 ? "suffix" : "entry at root",
 268                                         0, 0 );
 269                                 rc = LDAP_INSUFFICIENT_ACCESS;
 270                                 goto return_results;
 271                         }
 272                 }
 273
 274                 if( subentry ) {
 275                         Debug( LDAP_DEBUG_TRACE,
 276                                 "bdb_add: no parent, cannot add subentry\n",
 277                                 0, 0, 0 );
 278                         rc = LDAP_INSUFFICIENT_ACCESS;
 279                         text = "no parent, cannot add subentry";
 280                         goto return_results;;
 281                 }
 282 #if 0
 283                 if ( ltid ) {
 284                         DBT obj;
 285                         obj.data = ",";
 286                         obj.size = 1;
 287                         rc = LOCK_GET( bdb->bi_dbenv, lockid, 0, &obj,
 288                                 DB_LOCK_WRITE, &lock);
 289                 }
 290 #endif
 291         }
 292
 293         /* dn2id index */
 294         rc = bdb_dn2id_add( be, ltid, &pdn, e );
 295         if ( rc != 0 ) {
 296                 Debug( LDAP_DEBUG_TRACE, "bdb_add: dn2id_add failed: %s (%d)\n",
 297                         db_strerror(rc), rc, 0 );
 298
 299                 switch( rc ) {
 300                 case DB_LOCK_DEADLOCK:
 301                 case DB_LOCK_NOTGRANTED:
 302                         goto retry;
 303                 case DB_KEYEXIST:
 304                         rc = LDAP_ALREADY_EXISTS;
 305                         break;
 306                 default:
 307                         rc = LDAP_OTHER;
 308                 }
 309                 goto return_results;
 310         }
 311
 312         /* id2entry index */
 313         rc = bdb_id2entry_add( be, ltid, e );
 314         if ( rc != 0 ) {
 315                 Debug( LDAP_DEBUG_TRACE, "bdb_add: id2entry_add failed\n",
 316                         0, 0, 0 );
 317                 switch( rc ) {
 318                 case DB_LOCK_DEADLOCK:
 319                 case DB_LOCK_NOTGRANTED:
 320                         goto retry;
 321                 default:
 322                         rc = LDAP_OTHER;
 323                 }
 324                 text = "entry store failed";
 325                 goto return_results;
 326         }
 327
 328         /* attribute indexes */
 329         rc = bdb_index_entry_add( be, ltid, e, e->e_attrs );
 330         if ( rc != LDAP_SUCCESS ) {
 331                 Debug( LDAP_DEBUG_TRACE, "bdb_add: index_entry_add failed\n",
 332                         0, 0, 0 );
 333                 switch( rc ) {
 334                 case DB_LOCK_DEADLOCK:
 335                 case DB_LOCK_NOTGRANTED:
 336                         goto retry;
 337                 default:
 338                         rc = LDAP_OTHER;
 339                 }
 340                 text = "index generation failed";
 341                 goto return_results;
 342         }
 343
 344         if( bdb->bi_txn ) {
 345                 rc = txn_commit( ltid, 0 );
 346         }
 347         ltid = NULL;
 348         op->o_private = NULL;
 349
 350         if( rc != 0 ) {
 351                 Debug( LDAP_DEBUG_TRACE,
 352                         "bdb_add: txn_commit failed: %s (%d)\n",
 353                         db_strerror(rc), rc, 0 );
 354                 rc = LDAP_OTHER;
 355                 text = "commit failed";
 356
 357         } else {
 358                 /* add the entry to the entry cache */
 359                 /* we should add to cache only upon free of txn-abort */
 360                 if (bdb_cache_add_entry_rw(&bdb->bi_cache, e, CACHE_WRITE_LOCK) != 0) {
 361                         text = "cache add failed";
 362                         goto return_results;
 363                 }
 364
 365                 Debug( LDAP_DEBUG_TRACE,
 366                         "bdb_add: added id=%08lx dn=\"%s\"\n",
 367                         e->e_id, e->e_dn, 0 );
 368                 rc = LDAP_SUCCESS;
 369                 text = NULL;
 370         }
 371
 372         bdb_cache_entry_commit (e);
 373
 374 return_results:
 375         send_ldap_result( conn, op, rc,
 376                 NULL, text, NULL, NULL );
 377
 378         if( rc == LDAP_SUCCESS && bdb->bi_txn_cp ) {
 379                 ldap_pvt_thread_yield();
 380                 TXN_CHECKPOINT( bdb->bi_dbenv,
 381                         bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 382         }
 383
 384 done:
 385
 386         if( ltid != NULL ) {
 387                 txn_abort( ltid );
 388                 op->o_private = NULL;
 389         }
 390
 391         return rc;
 392 }