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 retry:  /* transaction retry */
  40                 Debug( LDAP_DEBUG_TRACE, "==> bdb_delete: retrying...\n", 0, 0, 0 );
  41                 rc = txn_abort( ltid );
  42                 ltid = NULL;
  43                 op->o_private = NULL;
  44                 if( rc != 0 ) {
  45                         rc = LDAP_OTHER;
  46                         text = "internal error";
  47                         goto return_results;
  48                 }
  49         }
  50
  51         /* begin transaction */
  52         rc = txn_begin( bdb->bi_dbenv, NULL, &ltid, 0 );
  53         if( rc != 0 ) {
  54                 Debug( LDAP_DEBUG_TRACE,
  55                         "bdb_delete: txn_begin failed: %s (%d)\n",
  56                         db_strerror(rc), rc, 0 );
  57                 rc = LDAP_OTHER;
  58                 text = "internal error";
  59                 goto return_results;
  60         }
  61
  62         opinfo.boi_bdb = be;
  63         opinfo.boi_txn = ltid;
  64         opinfo.boi_err = 0;
  65         op->o_private = &opinfo;
  66
  67         /* get entry for read/modify/write */
  68         rc = bdb_dn2entry( be, ltid, ndn, &e, &matched, DB_RMW );
  69
  70         switch( rc ) {
  71         case 0:
  72         case DB_NOTFOUND:
  73                 break;
  74         case DB_LOCK_DEADLOCK:
  75         case DB_LOCK_NOTGRANTED:
  76                 goto retry;
  77         default:
  78                 rc = LDAP_OTHER;
  79                 text = "internal error";
  80                 goto return_results;
  81         }
  82
  83         if ( e == NULL ) {
  84                 char *matched_dn = NULL;
  85                 struct berval **refs = NULL;
  86
  87                 Debug( LDAP_DEBUG_ARGS,
  88                         "<=- bdb_delete: no such object %s\n",
  89                         dn, 0, 0);
  90
  91                 if ( matched != NULL ) {
  92                         matched_dn = ch_strdup( matched->e_dn );
  93                         refs = is_entry_referral( matched )
  94                                 ? get_entry_referrals( be, conn, op, matched )
  95                                 : NULL;
  96                         bdb_entry_return( be, matched );
  97                 } else {
  98                         refs = default_referral;
  99                 }
 100
 101                 send_ldap_result( conn, op, LDAP_REFERRAL,
 102                         matched_dn, NULL, refs, NULL );
 103
 104                 if ( matched != NULL ) {
 105                         ber_bvecfree( refs );
 106                         free( matched_dn );
 107                 }
 108
 109                 rc = -1;
 110                 goto done;
 111         }
 112
 113         pdn = dn_parent( be, ndn );
 114
 115         if( pdn != NULL && *pdn != '\0' ) {
 116                 /* get parent */
 117                 rc = bdb_dn2entry( be, ltid, pdn, &p, NULL, 0 );
 118
 119                 ch_free( pdn );
 120
 121                 switch( rc ) {
 122                 case 0:
 123                 case DB_NOTFOUND:
 124                         break;
 125                 case DB_LOCK_DEADLOCK:
 126                 case DB_LOCK_NOTGRANTED:
 127                         goto retry;
 128                 default:
 129                         rc = LDAP_OTHER;
 130                         text = "internal error";
 131                         goto return_results;
 132                 }
 133
 134                 if( p == NULL) {
 135                         Debug( LDAP_DEBUG_TRACE,
 136                                 "<=- bdb_delete: parent does not exist\n",
 137                                 0, 0, 0);
 138                         rc = LDAP_OTHER;
 139                         text = "could not locate parent of entry";
 140                         goto return_results;
 141                 }
 142
 143                 /* check parent for "children" acl */
 144                 rc = access_allowed( be, conn, op, p,
 145                         children, NULL, ACL_WRITE );
 146
 147                 bdb_entry_return( be, p );
 148
 149                 if ( !rc  ) {
 150                         Debug( LDAP_DEBUG_TRACE,
 151                                 "<=- bdb_delete: no access to parent\n",
 152                                 0, 0, 0 );
 153                         rc = LDAP_INSUFFICIENT_ACCESS;
 154                         goto return_results;
 155                 }
 156
 157         } else {
 158                 ch_free( pdn );
 159
 160                 /* no parent, must be root to delete */
 161                 if( ! be_isroot( be, op->o_ndn ) ) {
 162                         Debug( LDAP_DEBUG_TRACE,
 163                                 "<=- bdb_delete: no parent and not root\n",
 164                                 0, 0, 0);
 165                         rc = LDAP_INSUFFICIENT_ACCESS;
 166                         goto return_results;
 167                 }
 168         }
 169
 170         if ( !manageDSAit && is_entry_referral( e ) ) {
 171                 /* parent is a referral, don't allow add */
 172                 /* parent is an alias, don't allow add */
 173                 struct berval **refs = get_entry_referrals( be,
 174                         conn, op, e );
 175
 176                 Debug( LDAP_DEBUG_TRACE,
 177                         "bdb_delete: entry is referral\n",
 178                         0, 0, 0 );
 179
 180                 send_ldap_result( conn, op, LDAP_REFERRAL,
 181                         e->e_dn, NULL, refs, NULL );
 182
 183                 ber_bvecfree( refs );
 184
 185                 rc = 1;
 186                 goto done;
 187         }
 188
 189         rc = bdb_dn2id_children( be, ltid, e->e_ndn );
 190         if( rc != DB_NOTFOUND ) {
 191                 switch( rc ) {
 192                 case DB_LOCK_DEADLOCK:
 193                 case DB_LOCK_NOTGRANTED:
 194                         goto retry;
 195                 case 0:
 196                         Debug(LDAP_DEBUG_ARGS,
 197                                 "<=- bdb_delete: non-leaf %s\n",
 198                                 dn, 0, 0);
 199                         rc = LDAP_NOT_ALLOWED_ON_NONLEAF;
 200                         text = "subtree delete not supported";
 201                         break;
 202                 default:
 203                         Debug(LDAP_DEBUG_ARGS,
 204                                 "<=- bdb_delete: has_children failed: %s (%d)\n",
 205                                 db_strerror(rc), rc, 0 );
 206                         rc = LDAP_OTHER;
 207                         text = "internal error";
 208                 }
 209                 goto return_results;
 210         }
 211
 212         /* delete from dn2id */
 213         rc = bdb_dn2id_delete( be, ltid, e->e_ndn, e->e_id );
 214         if ( rc != 0 ) {
 215                 switch( rc ) {
 216                 case DB_LOCK_DEADLOCK:
 217                 case DB_LOCK_NOTGRANTED:
 218                         goto retry;
 219                 default:
 220                         rc = LDAP_OTHER;
 221                 }
 222                 Debug(LDAP_DEBUG_ARGS,
 223                         "<=- bdb_delete: dn2id failed: %s (%d)\n",
 224                         db_strerror(rc), rc, 0 );
 225                 text = "DN index delete failed";
 226                 goto return_results;
 227         }
 228
 229         /* delete from id2entry */
 230         if ( bdb_id2entry_delete( be, ltid, e->e_id ) != 0 ) {
 231                 switch( rc ) {
 232                 case DB_LOCK_DEADLOCK:
 233                 case DB_LOCK_NOTGRANTED:
 234                         goto retry;
 235                 default:
 236                         rc = LDAP_OTHER;
 237                 }
 238                 Debug(LDAP_DEBUG_ARGS,
 239                         "<=- bdb_delete: id2entry failed: %s (%d)\n",
 240                         db_strerror(rc), rc, 0 );
 241                 text = "entry delete failed";
 242                 goto return_results;
 243         }
 244
 245         rc = txn_commit( ltid, 0 );
 246         ltid = NULL;
 247         op->o_private = NULL;
 248
 249         if( rc == 0 ) {
 250                 Debug( LDAP_DEBUG_TRACE,
 251                         "bdb_add: txn_commit failed: %s (%d)\n",
 252                         db_strerror(rc), rc, 0 );
 253                 rc = LDAP_OTHER;
 254                 text = "commit failed";
 255
 256         } else {
 257                 Debug( LDAP_DEBUG_TRACE,
 258                         "bdb_add: added id=%08x dn=\"%s\"\n",
 259                         e->e_id, e->e_dn, 0 );
 260                 rc = LDAP_SUCCESS;
 261                 text = NULL;
 262         }
 263
 264 return_results:
 265         send_ldap_result( conn, op, LDAP_SUCCESS,
 266                 NULL, text, NULL, NULL );
 267
 268 done:
 269         /* free entry */
 270         if( e != NULL ) bdb_entry_return( be, e );
 271
 272         if( ltid != NULL ) {
 273                 txn_abort( ltid );
 274                 op->o_private = NULL;
 275         }
 276
 277         return rc;
 278 }