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
  35         Debug(LDAP_DEBUG_ARGS, "==> bdb_delete: %s\n", dn, 0, 0);
  36
  37         if (0) {
  38                 /* transaction retry */
  39 retry:  rc = txn_abort( ltid );
  40                 ltid = NULL;
  41                 op->o_private = NULL;
  42                 if( rc != 0 ) {
  43                         rc = LDAP_OTHER;
  44                         text = "internal error";
  45                         goto return_results;
  46                 }
  47         }
  48
  49         /* begin transaction */
  50         rc = txn_begin( bdb->bi_dbenv, NULL, &ltid, 0 );
  51         if( rc != 0 ) {
  52                 Debug( LDAP_DEBUG_TRACE,
  53                         "bdb_delete: txn_begin failed: %s (%d)\n",
  54                         db_strerror(rc), rc, 0 );
  55                 rc = LDAP_OTHER;
  56                 text = "internal error";
  57                 goto return_results;
  58         }
  59
  60         op->o_private = ltid;
  61
  62         pdn = dn_parent( be, e->e_ndn );
  63
  64         if( pdn != NULL && *pdn != '\0' ) {
  65                 /* get parent with reader lock */
  66                 rc = dn2entry_r( be, ltid, pdn, &p, NULL );
  67
  68                 ch_free( pdn );
  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( p == NULL) {
  84                         Debug( LDAP_DEBUG_TRACE,
  85                                 "<=- bdb_delete: parent does not exist\n",
  86                                 0, 0, 0);
  87                         rc = LDAP_OTHER;
  88                         text = "could not locate parent of entry";
  89                         goto return_results;
  90                 }
  91
  92                 /* check parent for "children" acl */
  93                 rc = access_allowed( be, conn, op, p,
  94                         children, NULL, ACL_WRITE );
  95
  96                 bdb_entry_return( be, p );
  97
  98                 if ( !rc  ) {
  99                         Debug( LDAP_DEBUG_TRACE,
 100                                 "<=- bdb_delete: no access to parent\n",
 101                                 0, 0, 0 );
 102                         rc = LDAP_INSUFFICIENT_ACCESS;
 103                         goto return_results;
 104                 }
 105
 106         } else {
 107                 ch_free( pdn );
 108
 109                 /* no parent, must be root to delete */
 110                 if( ! be_isroot( be, op->o_ndn ) ) {
 111                         Debug( LDAP_DEBUG_TRACE,
 112                                 "<=- bdb_delete: no parent and not root\n",
 113                                 0, 0, 0);
 114                         rc = LDAP_INSUFFICIENT_ACCESS;
 115                         goto return_results;
 116                 }
 117         }
 118
 119         /* get entry */
 120         rc = dn2entry_w( be, ltid, ndn, &e, &matched );
 121
 122         switch( rc ) {
 123         case 0:
 124         case DB_NOTFOUND:
 125                 break;
 126         case DB_LOCK_DEADLOCK:
 127         case DB_LOCK_NOTGRANTED:
 128                 goto retry;
 129         default:
 130                 rc = LDAP_OTHER;
 131                 text = "internal error";
 132                 goto return_results;
 133         }
 134
 135         if ( e == NULL ) {
 136                 char *matched_dn = NULL;
 137                 struct berval **refs = NULL;
 138
 139                 Debug( LDAP_DEBUG_ARGS,
 140                         "<=- bdb_delete: no such object %s\n",
 141                         dn, 0, 0);
 142
 143                 if ( matched != NULL ) {
 144                         matched_dn = ch_strdup( matched->e_dn );
 145                         refs = is_entry_referral( matched )
 146                                 ? get_entry_referrals( be, conn, op, matched )
 147                                 : NULL;
 148                         bdb_entry_return( be, matched );
 149                 } else {
 150                         refs = default_referral;
 151                 }
 152
 153                 send_ldap_result( conn, op, LDAP_REFERRAL,
 154                         matched_dn, NULL, refs, NULL );
 155
 156                 if ( matched != NULL ) {
 157                         ber_bvecfree( refs );
 158                         free( matched_dn );
 159                 }
 160
 161                 rc = -1;
 162                 goto done;
 163         }
 164
 165     if ( !manageDSAit && is_entry_referral( e ) ) {
 166                 /* parent is a referral, don't allow add */
 167                 /* parent is an alias, don't allow add */
 168                 struct berval **refs = get_entry_referrals( be,
 169                         conn, op, e );
 170
 171                 Debug( LDAP_DEBUG_TRACE,
 172                         "bdb_delete: entry is referral\n",
 173                         0, 0, 0 );
 174
 175                 send_ldap_result( conn, op, LDAP_REFERRAL,
 176                     e->e_dn, NULL, refs, NULL );
 177
 178                 ber_bvecfree( refs );
 179
 180                 rc = 1;
 181                 goto done;
 182         }
 183
 184         rc = bdb_dn2id_children( be, ltid, e->e_ndn );
 185         if( rc != DB_NOTFOUND ) {
 186                 switch( rc ) {
 187                 case DB_LOCK_DEADLOCK:
 188                 case DB_LOCK_NOTGRANTED:
 189                         goto retry;
 190                 case 0:
 191                         Debug(LDAP_DEBUG_ARGS,
 192                                 "<=- bdb_delete: non-leaf %s\n",
 193                                 dn, 0, 0);
 194                         rc = LDAP_NOT_ALLOWED_ON_NONLEAF;
 195                         text = "subtree delete not supported";
 196                         break;
 197                 default:
 198                         Debug(LDAP_DEBUG_ARGS,
 199                                 "<=- bdb_delete: has_children failed: %s (%d)\n",
 200                                 db_strerror(rc), rc, 0 );
 201                         rc = LDAP_OTHER;
 202                         text = "internal error";
 203                 }
 204                 goto return_results;
 205         }
 206
 207         /* delete from dn2id */
 208         rc = bdb_dn2id_delete( be, ltid, e->e_ndn, e->e_id );
 209         if ( rc != 0 ) {
 210                 switch( rc ) {
 211                 case DB_LOCK_DEADLOCK:
 212                 case DB_LOCK_NOTGRANTED:
 213                         goto retry;
 214                 default:
 215                         rc = LDAP_OTHER;
 216                 }
 217                 Debug(LDAP_DEBUG_ARGS,
 218                         "<=- bdb_delete: dn2id failed: %s (%d)\n",
 219                         db_strerror(rc), rc, 0 );
 220                 text = "DN index delete failed";
 221                 goto return_results;
 222         }
 223
 224         /* delete from id2entry */
 225         if ( bdb_id2entry_delete( be, ltid, e->e_id ) != 0 ) {
 226                 switch( rc ) {
 227                 case DB_LOCK_DEADLOCK:
 228                 case DB_LOCK_NOTGRANTED:
 229                         goto retry;
 230                 default:
 231                         rc = LDAP_OTHER;
 232                 }
 233                 Debug(LDAP_DEBUG_ARGS,
 234                         "<=- bdb_delete: id2entry failed: %s (%d)\n",
 235                         db_strerror(rc), rc, 0 );
 236                 text = "entry delete failed";
 237                 goto return_results;
 238         }
 239
 240         rc = txn_commit( ltid, 0 );
 241         ltid = NULL;
 242         op->o_private = NULL;
 243
 244         if( rc == 0 ) {
 245                 Debug( LDAP_DEBUG_TRACE,
 246                         "bdb_add: txn_commit failed: %s (%d)\n",
 247                         db_strerror(rc), rc, 0 );
 248                 rc = LDAP_OTHER;
 249                 text = "commit failed";
 250
 251         } else {
 252                 Debug( LDAP_DEBUG_TRACE,
 253                         "bdb_add: added id=%08x dn=\"%s\"\n",
 254                         e->e_id, e->e_dn, 0 );
 255                 rc = LDAP_SUCCESS;
 256                 text = NULL;
 257         }
 258
 259 return_results:
 260         send_ldap_result( conn, op, LDAP_SUCCESS,
 261                 NULL, text, NULL, NULL );
 262
 263 done:
 264         /* free entry */
 265         if( e != NULL ) bdb_entry_return( be, e );
 266
 267         if( ltid != NULL ) {
 268                 txn_abort( ltid );
 269                 op->o_private = NULL;
 270         }
 271
 272         return rc;
 273 }