external/bsd/openldap/dist/servers/slapd/back-dnssrv/bind.c

   1 /* bind.c - DNS SRV backend bind function */
   2 /* $OpenLDAP: pkg/ldap/servers/slapd/back-dnssrv/bind.c,v 1.22.2.3 2008/02/11 23:26:46 kurt Exp $ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2000-2008 The OpenLDAP Foundation.
   6  * Portions Copyright 2000-2003 Kurt D. Zeilenga.
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted only as authorized by the OpenLDAP
  11  * Public License.
  12  *
  13  * A copy of this license is available in the file LICENSE in the
  14  * top-level directory of the distribution or, alternatively, at
  15  * <http://www.OpenLDAP.org/license.html>.
  16  */
  17 /* ACKNOWLEDGEMENTS:
  18  * This work was originally developed by Kurt D. Zeilenga for inclusion
  19  * in OpenLDAP Software.
  20  */
  21
  22
  23 #include "portable.h"
  24
  25 #include <stdio.h>
  26
  27 #include <ac/socket.h>
  28 #include <ac/string.h>
  29
  30 #include "slap.h"
  31 #include "proto-dnssrv.h"
  32
  33 int
  34 dnssrv_back_bind(
  35         Operation       *op,
  36         SlapReply       *rs )
  37 {
  38         Debug( LDAP_DEBUG_TRACE, "DNSSRV: bind dn=\"%s\" (%d)\n",
  39                 BER_BVISNULL( &op->o_req_dn ) ? "" : op->o_req_dn.bv_val,
  40                 op->orb_method, 0 );
  41
  42         /* allow rootdn as a means to auth without the need to actually
  43          * contact the proxied DSA */
  44         switch ( be_rootdn_bind( op, NULL ) ) {
  45         case LDAP_SUCCESS:
  46                 /* frontend will send result */
  47                 return rs->sr_err;
  48
  49         default:
  50                 /* treat failure and like any other bind, otherwise
  51                  * it could reveal the DN of the rootdn */
  52                 break;
  53         }
  54
  55         if ( !BER_BVISNULL( &op->orb_cred ) &&
  56                 !BER_BVISEMPTY( &op->orb_cred ) )
  57         {
  58                 /* simple bind */
  59                 Statslog( LDAP_DEBUG_STATS,
  60                         "%s DNSSRV BIND dn=\"%s\" provided cleartext passwd\n",
  61                         op->o_log_prefix,
  62                         BER_BVISNULL( &op->o_req_dn ) ? "" : op->o_req_dn.bv_val , 0, 0, 0 );
  63
  64                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
  65                         "you shouldn't send strangers your password" );
  66
  67         } else {
  68                 /* unauthenticated bind */
  69                 /* NOTE: we're not going to get here anyway:
  70                  * unauthenticated bind is dealt with by the frontend */
  71                 Debug( LDAP_DEBUG_TRACE, "DNSSRV: BIND dn=\"%s\"\n",
  72                         BER_BVISNULL( &op->o_req_dn ) ? "" : op->o_req_dn.bv_val, 0, 0 );
  73
  74                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
  75                         "anonymous bind expected" );
  76         }
  77
  78         return 1;
  79 }