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

   1 /* delete.c - ldbm backend delete routine */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-2000 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_delete(
  18         BackendDB       *be,
  19         Connection      *conn,
  20         Operation       *op,
  21         const char      *dn,
  22         const char      *ndn
  23 )
  24 {
  25         struct bdb_info *bdb = (struct bdb_info *) be->be_private;
  26         Entry   *matched;
  27         char    *pdn = NULL;
  28         Entry   *e, *p = NULL;
  29         int     rc;
  30         const char *text = NULL;
  31         int             manageDSAit = get_manageDSAit( op );
  32         AttributeDescription *children = slap_schema.si_ad_children;
  33         DB_TXN          *ltid = NULL;
  34         struct bdb_op_info opinfo;
  35
  36         Debug(LDAP_DEBUG_ARGS, "==> bdb_delete: %s\n", dn, 0, 0);
  37
  38         if (0) {
  39                 /* transaction retry */
  40 retry:  rc = txn_abort( ltid );
  41                 ltid = NULL;
  42                 op->o_private = NULL;
  43                 if( rc != 0 ) {
  44                         rc = LDAP_OTHER;
  45                         text = "internal error";
  46                         goto return_results;
  47                 }
  48         }
  49
  50         /* begin transaction */
  51         rc = txn_begin( bdb->bi_dbenv, NULL, &ltid, 0 );
  52         if( rc != 0 ) {
  53                 Debug( LDAP_DEBUG_TRACE,
  54                         "bdb_delete: txn_begin failed: %s (%d)\n",
  55                         db_strerror(rc), rc, 0 );
  56                 rc = LDAP_OTHER;
  57                 text = "internal error";
  58                 goto return_results;
  59         }
  60
  61         opinfo.boi_bdb = be;
  62         opinfo.boi_txn = ltid;
  63         opinfo.boi_err = 0;
  64         op->o_private = &opinfo;
  65
  66         /* get entry for read/modify/write */
  67         rc = bdb_dn2entry( be, ltid, ndn, &e, &matched, DB_RMW );
  68
  69         switch( rc ) {
  70         case 0:
  71         case DB_NOTFOUND:
  72                 break;
  73         case DB_LOCK_DEADLOCK:
  74         case DB_LOCK_NOTGRANTED:
  75                 goto retry;
  76         default:
  77                 rc = LDAP_OTHER;
  78                 text = "internal error";
  79                 goto return_results;
  80         }
  81
  82         if ( e == NULL ) {
  83                 char *matched_dn = NULL;
  84                 struct berval **refs = NULL;
  85
  86                 Debug( LDAP_DEBUG_ARGS,
  87                         "<=- bdb_delete: no such object %s\n",
  88                         dn, 0, 0);
  89
  90                 if ( matched != NULL ) {
  91                         matched_dn = ch_strdup( matched->e_dn );
  92                         refs = is_entry_referral( matched )
  93                                 ? get_entry_referrals( be, conn, op, matched )
  94                                 : NULL;
  95                         bdb_entry_return( be, matched );
  96                 } else {
  97                         refs = default_referral;
  98                 }
  99
 100                 send_ldap_result( conn, op, LDAP_REFERRAL,
 101                         matched_dn, NULL, refs, NULL );
 102
 103                 if ( matched != NULL ) {
 104                         ber_bvecfree( refs );
 105                         free( matched_dn );
 106                 }
 107
 108                 rc = -1;
 109                 goto done;
 110         }
 111
 112         pdn = dn_parent( be, ndn );
 113
 114         if( pdn != NULL && *pdn != '\0' ) {
 115                 /* get parent */
 116                 rc = bdb_dn2entry( be, ltid, pdn, &p, NULL, 0 );
 117
 118                 ch_free( pdn );
 119
 120                 switch( rc ) {
 121                 case 0:
 122                 case DB_NOTFOUND:
 123                         break;
 124                 case DB_LOCK_DEADLOCK:
 125                 case DB_LOCK_NOTGRANTED:
 126                         goto retry;
 127                 default:
 128                         rc = LDAP_OTHER;
 129                         text = "internal error";
 130                         goto return_results;
 131                 }
 132
 133                 if( p == NULL) {
 134                         Debug( LDAP_DEBUG_TRACE,
 135                                 "<=- bdb_delete: parent does not exist\n",
 136                                 0, 0, 0);
 137                         rc = LDAP_OTHER;
 138                         text = "could not locate parent of entry";
 139                         goto return_results;
 140                 }
 141
 142                 /* check parent for "children" acl */
 143                 rc = access_allowed( be, conn, op, p,
 144                         children, NULL, ACL_WRITE );
 145
 146                 bdb_entry_return( be, p );
 147
 148                 if ( !rc  ) {
 149                         Debug( LDAP_DEBUG_TRACE,
 150                                 "<=- bdb_delete: no access to parent\n",
 151                                 0, 0, 0 );
 152                         rc = LDAP_INSUFFICIENT_ACCESS;
 153                         goto return_results;
 154                 }
 155
 156         } else {
 157                 ch_free( pdn );
 158
 159                 /* no parent, must be root to delete */
 160                 if( ! be_isroot( be, op->o_ndn ) ) {
 161                         Debug( LDAP_DEBUG_TRACE,
 162                                 "<=- bdb_delete: no parent and not root\n",
 163                                 0, 0, 0);
 164                         rc = LDAP_INSUFFICIENT_ACCESS;
 165                         goto return_results;
 166                 }
 167         }
 168
 169         if ( !manageDSAit && is_entry_referral( e ) ) {
 170                 /* parent is a referral, don't allow add */
 171                 /* parent is an alias, don't allow add */
 172                 struct berval **refs = get_entry_referrals( be,
 173                         conn, op, e );
 174
 175                 Debug( LDAP_DEBUG_TRACE,
 176                         "bdb_delete: entry is referral\n",
 177                         0, 0, 0 );
 178
 179                 send_ldap_result( conn, op, LDAP_REFERRAL,
 180                         e->e_dn, NULL, refs, NULL );
 181
 182                 ber_bvecfree( refs );
 183
 184                 rc = 1;
 185                 goto done;
 186         }
 187
 188         rc = bdb_dn2id_children( be, ltid, e->e_ndn );
 189         if( rc != DB_NOTFOUND ) {
 190                 switch( rc ) {
 191                 case DB_LOCK_DEADLOCK:
 192                 case DB_LOCK_NOTGRANTED:
 193                         goto retry;
 194                 case 0:
 195                         Debug(LDAP_DEBUG_ARGS,
 196                                 "<=- bdb_delete: non-leaf %s\n",
 197                                 dn, 0, 0);
 198                         rc = LDAP_NOT_ALLOWED_ON_NONLEAF;
 199                         text = "subtree delete not supported";
 200                         break;
 201                 default:
 202                         Debug(LDAP_DEBUG_ARGS,
 203                                 "<=- bdb_delete: has_children failed: %s (%d)\n",
 204                                 db_strerror(rc), rc, 0 );
 205                         rc = LDAP_OTHER;
 206                         text = "internal error";
 207                 }
 208                 goto return_results;
 209         }
 210
 211         /* delete from dn2id */
 212         rc = bdb_dn2id_delete( be, ltid, e->e_ndn, e->e_id );
 213         if ( rc != 0 ) {
 214                 switch( rc ) {
 215                 case DB_LOCK_DEADLOCK:
 216                 case DB_LOCK_NOTGRANTED:
 217                         goto retry;
 218                 default:
 219                         rc = LDAP_OTHER;
 220                 }
 221                 Debug(LDAP_DEBUG_ARGS,
 222                         "<=- bdb_delete: dn2id failed: %s (%d)\n",
 223                         db_strerror(rc), rc, 0 );
 224                 text = "DN index delete failed";
 225                 goto return_results;
 226         }
 227
 228         /* delete from id2entry */
 229         if ( bdb_id2entry_delete( be, ltid, e->e_id ) != 0 ) {
 230                 switch( rc ) {
 231                 case DB_LOCK_DEADLOCK:
 232                 case DB_LOCK_NOTGRANTED:
 233                         goto retry;
 234                 default:
 235                         rc = LDAP_OTHER;
 236                 }
 237                 Debug(LDAP_DEBUG_ARGS,
 238                         "<=- bdb_delete: id2entry failed: %s (%d)\n",
 239                         db_strerror(rc), rc, 0 );
 240                 text = "entry delete failed";
 241                 goto return_results;
 242         }
 243
 244         rc = txn_commit( ltid, 0 );
 245         ltid = NULL;
 246         op->o_private = NULL;
 247
 248         if( rc == 0 ) {
 249                 Debug( LDAP_DEBUG_TRACE,
 250                         "bdb_add: txn_commit failed: %s (%d)\n",
 251                         db_strerror(rc), rc, 0 );
 252                 rc = LDAP_OTHER;
 253                 text = "commit failed";
 254
 255         } else {
 256                 Debug( LDAP_DEBUG_TRACE,
 257                         "bdb_add: added id=%08x dn=\"%s\"\n",
 258                         e->e_id, e->e_dn, 0 );
 259                 rc = LDAP_SUCCESS;
 260                 text = NULL;
 261         }
 262
 263 return_results:
 264         send_ldap_result( conn, op, LDAP_SUCCESS,
 265                 NULL, text, NULL, NULL );
 266
 267 done:
 268         /* free entry */
 269         if( e != NULL ) bdb_entry_return( be, e );
 270
 271         if( ltid != NULL ) {
 272                 txn_abort( ltid );
 273                 op->o_private = NULL;
 274         }
 275
 276         return rc;
 277 }