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

   1 /* $OpenLDAP$ */
   2 /*
   3  * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
   4  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   5  */
   6 /*
   7  * Copyright (c) 1995 Regents of the University of Michigan.
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms are permitted
  11  * provided that this notice is preserved and that due credit is given
  12  * to the University of Michigan at Ann Arbor. The name of the University
  13  * may not be used to endorse or promote products derived from this
  14  * software without specific prior written permission. This software
  15  * is provided ``as is'' without express or implied warranty.
  16  */
  17
  18 #include "portable.h"
  19
  20 #include <stdio.h>
  21
  22 #include <ac/string.h>
  23 #include <ac/socket.h>
  24
  25 #include "ldap_pvt.h"
  26 #include "slap.h"
  27
  28 int
  29 do_delete(
  30     Connection  *conn,
  31     Operation   *op
  32 )
  33 {
  34         struct berval dn = { 0, NULL };
  35         struct berval *ndn = NULL;
  36         struct berval *pdn = NULL;
  37         const char *text;
  38         Backend *be;
  39         int rc;
  40         int manageDSAit;
  41
  42 #ifdef NEW_LOGGING
  43         LDAP_LOG(( "operation", LDAP_LEVEL_ENTRY,
  44                 "do_delete: conn %d\n", conn->c_connid ));
  45 #else
  46         Debug( LDAP_DEBUG_TRACE, "do_delete\n", 0, 0, 0 );
  47 #endif
  48
  49         /*
  50          * Parse the delete request.  It looks like this:
  51          *
  52          *      DelRequest := DistinguishedName
  53          */
  54
  55         if ( ber_scanf( op->o_ber, "o", &dn ) == LBER_ERROR ) {
  56 #ifdef NEW_LOGGING
  57                 LDAP_LOG(( "operation", LDAP_LEVEL_ERR,
  58                         "do_delete: conn: %d  ber_scanf failed\n", conn->c_connid ));
  59 #else
  60                 Debug( LDAP_DEBUG_ANY, "ber_scanf failed\n", 0, 0, 0 );
  61 #endif
  62                 send_ldap_disconnect( conn, op,
  63                         LDAP_PROTOCOL_ERROR, "decoding error" );
  64                 return SLAPD_DISCONNECT;
  65         }
  66
  67         if( ( rc = get_ctrls( conn, op, 1 ) ) != LDAP_SUCCESS ) {
  68 #ifdef NEW_LOGGING
  69                 LDAP_LOG(( "oepration", LDAP_LEVEL_ERR,
  70                         "do_delete: conn %d  get_ctrls failed\n", conn->c_connid ));
  71 #else
  72                 Debug( LDAP_DEBUG_ANY, "do_delete: get_ctrls failed\n", 0, 0, 0 );
  73 #endif
  74                 goto cleanup;
  75         }
  76
  77         rc = dnPretty( NULL, &dn, &pdn );
  78         if( rc != LDAP_SUCCESS ) {
  79 #ifdef NEW_LOGGING
  80                 LDAP_LOG(( "operation", LDAP_LEVEL_INFO,
  81                         "do_delete: conn %d  invalid dn (%s)\n",
  82                         conn->c_connid, dn.bv_val ));
  83 #else
  84                 Debug( LDAP_DEBUG_ANY,
  85                         "do_delete: invalid dn (%s)\n", dn.bv_val, 0, 0 );
  86 #endif
  87                 send_ldap_result( conn, op, rc = LDAP_INVALID_DN_SYNTAX, NULL,
  88                     "invalid DN", NULL, NULL );
  89                 goto cleanup;
  90         }
  91
  92         rc = dnNormalize( NULL, &dn, &ndn );
  93         if( rc != LDAP_SUCCESS ) {
  94 #ifdef NEW_LOGGING
  95                 LDAP_LOG(( "operation", LDAP_LEVEL_INFO,
  96                         "do_delete: conn %d  invalid dn (%s)\n",
  97                         conn->c_connid, dn.bv_val ));
  98 #else
  99                 Debug( LDAP_DEBUG_ANY,
 100                         "do_delete: invalid dn (%s)\n", dn.bv_val, 0, 0 );
 101 #endif
 102                 send_ldap_result( conn, op, rc = LDAP_INVALID_DN_SYNTAX, NULL,
 103                     "invalid DN", NULL, NULL );
 104                 goto cleanup;
 105         }
 106
 107         if( ndn->bv_len == 0 ) {
 108 #ifdef NEW_LOGGING
 109                 LDAP_LOG(( "operation", LDAP_LEVEL_INFO, "do_delete: conn %d: "
 110                         "Attempt to delete root DSE.\n", conn->c_connid ));
 111 #else
 112                 Debug( LDAP_DEBUG_ANY, "do_delete: root dse!\n", 0, 0, 0 );
 113 #endif
 114                 /* protocolError would likely be a more appropriate error */
 115                 send_ldap_result( conn, op, rc = LDAP_UNWILLING_TO_PERFORM,
 116                         NULL, "cannot delete the root DSE", NULL, NULL );
 117                 goto cleanup;
 118
 119 #ifdef SLAPD_SCHEMA_DN
 120
 121         } else if ( strcasecmp( ndn->bv_val, SLAPD_SCHEMA_DN ) == 0 ) {
 122 #ifdef NEW_LOGGING
 123                 LDAP_LOG(( "operation", LDAP_LEVEL_INFO, "do_delete: conn %d: "
 124                         "Attempt to delete subschema subentry.\n", conn->c_connid ));
 125 #else
 126                 Debug( LDAP_DEBUG_ANY, "do_delete: subschema subentry!\n", 0, 0, 0 );
 127 #endif
 128                 /* protocolError would likely be a more appropriate error */
 129                 send_ldap_result( conn, op, rc = LDAP_UNWILLING_TO_PERFORM,
 130                         NULL, "cannot delete the root DSE", NULL, NULL );
 131                 goto cleanup;
 132
 133 #endif
 134         }
 135
 136         Statslog( LDAP_DEBUG_STATS, "conn=%ld op=%d DEL dn=\"%s\"\n",
 137                 op->o_connid, op->o_opid, pdn->bv_val, 0, 0 );
 138
 139         manageDSAit = get_manageDSAit( op );
 140
 141         /*
 142          * We could be serving multiple database backends.  Select the
 143          * appropriate one, or send a referral to our "referral server"
 144          * if we don't hold it.
 145          */
 146         if ( (be = select_backend( ndn, manageDSAit, 0 )) == NULL ) {
 147                 struct berval **ref = referral_rewrite( default_referral,
 148                         NULL, pdn->bv_val, LDAP_SCOPE_DEFAULT );
 149
 150                 send_ldap_result( conn, op, rc = LDAP_REFERRAL,
 151                         NULL, NULL, ref ? ref : default_referral, NULL );
 152
 153                 ber_bvecfree( ref );
 154                 goto cleanup;
 155         }
 156
 157         /* check restrictions */
 158         rc = backend_check_restrictions( be, conn, op, NULL, &text ) ;
 159         if( rc != LDAP_SUCCESS ) {
 160                 send_ldap_result( conn, op, rc,
 161                         NULL, text, NULL, NULL );
 162                 goto cleanup;
 163         }
 164
 165         /* check for referrals */
 166         rc = backend_check_referrals( be, conn, op, pdn->bv_val, ndn->bv_val );
 167         if ( rc != LDAP_SUCCESS ) {
 168                 goto cleanup;
 169         }
 170
 171         /* deref suffix alias if appropriate */
 172         suffix_alias( be, ndn );
 173
 174         /*
 175          * do the delete if 1 && (2 || 3)
 176          * 1) there is a delete function implemented in this backend;
 177          * 2) this backend is master for what it holds;
 178          * 3) it's a replica and the dn supplied is the update_ndn.
 179          */
 180         if ( be->be_delete ) {
 181                 /* do the update here */
 182                 int repl_user = be_isupdate( be, &op->o_ndn );
 183 #ifndef SLAPD_MULTIMASTER
 184                 if ( !be->be_update_ndn.bv_len || repl_user )
 185 #endif
 186                 {
 187                         if ( (*be->be_delete)( be, conn, op, pdn->bv_val, ndn->bv_val ) == 0 ) {
 188 #ifdef SLAPD_MULTIMASTER
 189                                 if ( !be->be_update_ndn.bv_len || !repl_user )
 190 #endif
 191                                 {
 192                                         replog( be, op, pdn, ndn, NULL );
 193                                 }
 194                         }
 195 #ifndef SLAPD_MULTIMASTER
 196                 } else {
 197                         struct berval **defref = be->be_update_refs
 198                                 ? be->be_update_refs : default_referral;
 199                         struct berval **ref = referral_rewrite( default_referral,
 200                                 NULL, pdn->bv_val, LDAP_SCOPE_DEFAULT );
 201
 202                         send_ldap_result( conn, op, rc = LDAP_REFERRAL, NULL, NULL,
 203                                 ref ? ref : defref, NULL );
 204
 205                         ber_bvecfree( ref );
 206 #endif
 207                 }
 208
 209         } else {
 210                 send_ldap_result( conn, op, rc = LDAP_UNWILLING_TO_PERFORM,
 211                         NULL, "operation not supported within namingContext", NULL, NULL );
 212         }
 213
 214 cleanup:
 215         free( dn.bv_val );
 216         if( pdn != NULL ) ber_bvfree( pdn );
 217         if( ndn != NULL ) ber_bvfree( ndn );
 218         return rc;
 219 }