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.bv_val ) ) {
 108                 pdn.bv_len = 0;
 109                 pdn.bv_val = "";
 110         } else {
 111                 rc = dnParent( e->e_nname.bv_val, (const char **)&pdn.bv_val );
 112                 if ( rc != LDAP_SUCCESS ) {
 113                         text = "internal error";
 114                         goto return_results;
 115                 }
 116                 pdn.bv_len = e->e_nname.bv_len - (pdn.bv_val - e->e_nname.bv_val);
 117         }
 118
 119         if( pdn.bv_len != 0 ) {
 120                 Entry *matched = NULL;
 121
 122 #if 0
 123                 if ( ltid ) {
 124                         DBT obj;
 125                         obj.data = pdn.bv_val-1;
 126                         obj.size = pdn.bv_len+1;
 127                         rc = LOCK_GET( bdb->bi_dbenv, lockid, 0, &obj,
 128                                 DB_LOCK_WRITE, &lock);
 129                 }
 130 #endif
 131
 132                 /* get parent */
 133                 rc = bdb_dn2entry_r( be, ltid, &pdn, &p, &matched, 0 );
 134
 135                 switch( rc ) {
 136                 case 0:
 137                 case DB_NOTFOUND:
 138                         break;
 139                 case DB_LOCK_DEADLOCK:
 140                 case DB_LOCK_NOTGRANTED:
 141                         goto retry;
 142                 default:
 143                         rc = LDAP_OTHER;
 144                         text = "internal error";
 145                         goto return_results;
 146                 }
 147
 148                 if ( p == NULL ) {
 149                         char *matched_dn = NULL;
 150                         BerVarray refs;
 151
 152                         if ( matched != NULL ) {
 153                                 matched_dn = ch_strdup( matched->e_dn );
 154                                 refs = is_entry_referral( matched )
 155                                         ? get_entry_referrals( be, conn, op, matched )
 156                                         : NULL;
 157                                 bdb_cache_return_entry_r(&bdb->bi_cache, matched);
 158                                 matched = NULL;
 159
 160                         } else {
 161                                 refs = referral_rewrite( default_referral,
 162                                         NULL, &e->e_name, LDAP_SCOPE_DEFAULT );
 163                         }
 164
 165                         Debug( LDAP_DEBUG_TRACE, "bdb_add: parent does not exist\n",
 166                                 0, 0, 0 );
 167
 168                         send_ldap_result( conn, op, rc = LDAP_REFERRAL,
 169                                 matched_dn, NULL, refs, NULL );
 170
 171                         ber_bvarray_free( refs );
 172                         ch_free( matched_dn );
 173
 174                         goto done;
 175                 }
 176
 177                 rc = access_allowed( be, conn, op, p,
 178                         children, NULL, ACL_WRITE );
 179
 180                 switch( opinfo.boi_err ) {
 181                 case DB_LOCK_DEADLOCK:
 182                 case DB_LOCK_NOTGRANTED:
 183                         /* free parent and reader lock */
 184                         bdb_cache_return_entry_r( &bdb->bi_cache, p );
 185                         p = NULL;
 186                         goto retry;
 187                 }
 188
 189                 if ( ! rc ) {
 190                         Debug( LDAP_DEBUG_TRACE, "bdb_add: no write access to parent\n",
 191                                 0, 0, 0 );
 192                         rc = LDAP_INSUFFICIENT_ACCESS;
 193                         text = "no write access to parent";
 194                         goto return_results;;
 195                 }
 196
 197                 if ( is_entry_subentry( p ) ) {
 198                         /* parent is a subentry, don't allow add */
 199                         Debug( LDAP_DEBUG_TRACE, "bdb_add: parent is subentry\n",
 200                                 0, 0, 0 );
 201                         rc = LDAP_OBJECT_CLASS_VIOLATION;
 202                         text = "parent is a subentry";
 203                         goto return_results;;
 204                 }
 205
 206                 if ( is_entry_alias( p ) ) {
 207                         /* parent is an alias, don't allow add */
 208                         Debug( LDAP_DEBUG_TRACE, "bdb_add: parent is alias\n",
 209                                 0, 0, 0 );
 210                         rc = LDAP_ALIAS_PROBLEM;
 211                         text = "parent is an alias";
 212                         goto return_results;;
 213                 }
 214
 215                 if ( is_entry_referral( p ) ) {
 216                         /* parent is a referral, don't allow add */
 217                         char *matched_dn = p->e_dn;
 218                         BerVarray refs = get_entry_referrals( be, conn, op, p );
 219
 220                         Debug( LDAP_DEBUG_TRACE, "bdb_add: parent is referral\n",
 221                                 0, 0, 0 );
 222
 223                         send_ldap_result( conn, op, rc = LDAP_REFERRAL,
 224                                 matched_dn, NULL, refs, NULL );
 225
 226                         ber_bvarray_free( refs );
 227                         bdb_cache_return_entry_r( be, p );
 228                         p = NULL;
 229                         goto done;
 230                 }
 231
 232                 if ( subentry ) {
 233                         /* FIXME: */
 234                         /* parent must be an administrative point of the required kind */
 235                 }
 236
 237                 /* free parent and reader lock */
 238                 bdb_cache_return_entry_r( be, p );
 239                 p = NULL;
 240
 241         } else {
 242                 /*
 243                  * no parent!
 244                  *      must be adding entry at suffix or with parent ""
 245                  */
 246                 if ( !be_isroot( be, &op->o_ndn )) {
 247                         if ( be_issuffix( be, "" ) || be_isupdate( be, &op->o_ndn ) ) {
 248                                 p = (Entry *)&slap_entry_root;
 249
 250                                 /* check parent for "children" acl */
 251                                 rc = access_allowed( be, conn, op, p,
 252                                         children, NULL, ACL_WRITE );
 253                                 p = NULL;
 254
 255                                 switch( opinfo.boi_err ) {
 256                                 case DB_LOCK_DEADLOCK:
 257                                 case DB_LOCK_NOTGRANTED:
 258                                         goto retry;
 259                                 }
 260
 261                                 if ( ! rc ) {
 262                                         Debug( LDAP_DEBUG_TRACE,
 263                                                 "bdb_add: no write access to parent\n",
 264                                                 0, 0, 0 );
 265                                         rc = LDAP_INSUFFICIENT_ACCESS;
 266                                         text = "no write access to parent";
 267                                         goto return_results;;
 268                                 }
 269
 270                         } else {
 271                                 Debug( LDAP_DEBUG_TRACE, "bdb_add: %s denied\n",
 272                                         pdn.bv_len == 0 ? "suffix" : "entry at root",
 273                                         0, 0 );
 274                                 rc = LDAP_INSUFFICIENT_ACCESS;
 275                                 goto return_results;
 276                         }
 277                 }
 278
 279                 if( subentry ) {
 280                         Debug( LDAP_DEBUG_TRACE,
 281                                 "bdb_add: no parent, cannot add subentry\n",
 282                                 0, 0, 0 );
 283                         rc = LDAP_INSUFFICIENT_ACCESS;
 284                         text = "no parent, cannot add subentry";
 285                         goto return_results;;
 286                 }
 287 #if 0
 288                 if ( ltid ) {
 289                         DBT obj;
 290                         obj.data = ",";
 291                         obj.size = 1;
 292                         rc = LOCK_GET( bdb->bi_dbenv, lockid, 0, &obj,
 293                                 DB_LOCK_WRITE, &lock);
 294                 }
 295 #endif
 296         }
 297
 298         /* dn2id index */
 299         rc = bdb_dn2id_add( be, ltid, &pdn, e );
 300         if ( rc != 0 ) {
 301                 Debug( LDAP_DEBUG_TRACE, "bdb_add: dn2id_add failed: %s (%d)\n",
 302                         db_strerror(rc), rc, 0 );
 303
 304                 switch( rc ) {
 305                 case DB_LOCK_DEADLOCK:
 306                 case DB_LOCK_NOTGRANTED:
 307                         goto retry;
 308                 case DB_KEYEXIST:
 309                         rc = LDAP_ALREADY_EXISTS;
 310                         break;
 311                 default:
 312                         rc = LDAP_OTHER;
 313                 }
 314                 goto return_results;
 315         }
 316
 317         /* id2entry index */
 318         rc = bdb_id2entry_add( be, ltid, e );
 319         if ( rc != 0 ) {
 320                 Debug( LDAP_DEBUG_TRACE, "bdb_add: id2entry_add failed\n",
 321                         0, 0, 0 );
 322                 switch( rc ) {
 323                 case DB_LOCK_DEADLOCK:
 324                 case DB_LOCK_NOTGRANTED:
 325                         goto retry;
 326                 default:
 327                         rc = LDAP_OTHER;
 328                 }
 329                 text = "entry store failed";
 330                 goto return_results;
 331         }
 332
 333         /* attribute indexes */
 334         rc = bdb_index_entry_add( be, ltid, e, e->e_attrs );
 335         if ( rc != LDAP_SUCCESS ) {
 336                 Debug( LDAP_DEBUG_TRACE, "bdb_add: index_entry_add failed\n",
 337                         0, 0, 0 );
 338                 switch( rc ) {
 339                 case DB_LOCK_DEADLOCK:
 340                 case DB_LOCK_NOTGRANTED:
 341                         goto retry;
 342                 default:
 343                         rc = LDAP_OTHER;
 344                 }
 345                 text = "index generation failed";
 346                 goto return_results;
 347         }
 348
 349         if( bdb->bi_txn ) {
 350                 rc = txn_commit( ltid, 0 );
 351         }
 352         ltid = NULL;
 353         op->o_private = NULL;
 354
 355         if( rc != 0 ) {
 356                 Debug( LDAP_DEBUG_TRACE,
 357                         "bdb_add: txn_commit failed: %s (%d)\n",
 358                         db_strerror(rc), rc, 0 );
 359                 rc = LDAP_OTHER;
 360                 text = "commit failed";
 361
 362         } else {
 363                 /* add the entry to the entry cache */
 364                 /* we should add to cache only upon free of txn-abort */
 365                 if (bdb_cache_add_entry_rw(&bdb->bi_cache, e, CACHE_WRITE_LOCK) != 0) {
 366                         text = "cache add failed";
 367                         goto return_results;
 368                 }
 369
 370                 Debug( LDAP_DEBUG_TRACE,
 371                         "bdb_add: added id=%08lx dn=\"%s\"\n",
 372                         e->e_id, e->e_dn, 0 );
 373                 rc = LDAP_SUCCESS;
 374                 text = NULL;
 375         }
 376
 377         bdb_cache_entry_commit (e);
 378
 379 return_results:
 380         send_ldap_result( conn, op, rc,
 381                 NULL, text, NULL, NULL );
 382
 383         if( rc == LDAP_SUCCESS && bdb->bi_txn_cp ) {
 384                 ldap_pvt_thread_yield();
 385                 TXN_CHECKPOINT( bdb->bi_dbenv,
 386                         bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
 387         }
 388
 389 done:
 390
 391         if( ltid != NULL ) {
 392                 txn_abort( ltid );
 393                 op->o_private = NULL;
 394         }
 395
 396         return rc;
 397 }