/*
 *
 *   Bacula UA authentication. Provides authentication with
 *     the Director.
 *
 *     Kern Sibbald, June MMI
 *
 *     Version $Id: authenticate.c 4992 2007-06-07 14:46:43Z kerns $
 *
 *    This routine runs as a thread and must be thread reentrant.
 *
 *  Basic tasks done here:
 *
 */
/*
   Bacula® - The Network Backup Solution

   Copyright (C) 2001-2006 Free Software Foundation Europe e.V.

   The main author of Bacula is Kern Sibbald, with contributions from
   many others, a complete list can be found in the file AUTHORS.
   This program is Free Software; you can redistribute it and/or
   modify it under the terms of version two of the GNU General Public
   License as published by the Free Software Foundation and included
   in the file LICENSE.

   This program is distributed in the hope that it will be useful, but
   WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
   General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
   02110-1301, USA.

   Bacula® is a registered trademark of John Walker.
   The licensor of Bacula is the Free Software Foundation Europe
   (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
   Switzerland, email:ftf@fsfeurope.org.
*/

#include "bacula.h"
#include "console.h"


/* Commands sent to Director */
static char hello[]    = "Hello %s calling\n";

/* Response from Director */
static char OKhello[]   = "1000 OK:";

/* Forward referenced functions */

/*
 * Authenticate Director
 */
int authenticate_director(JCR *jcr, DIRRES *director, CONRES *cons)
{
   BSOCK *dir = jcr->dir_bsock;
   int tls_local_need = BNET_TLS_NONE;
   int tls_remote_need = BNET_TLS_NONE;
   int compatible = true;
   char bashed_name[MAX_NAME_LENGTH];
   char *password;

   /*
    * Send my name to the Director then do authentication
    */
   if (cons) {
      bstrncpy(bashed_name, cons->hdr.name, sizeof(bashed_name));
      bash_spaces(bashed_name);
      password = cons->password;
   } else {
      bstrncpy(bashed_name, "*UserAgent*", sizeof(bashed_name));
      password = director->password;
   }
   /* Timeout Hello after 5 mins */
   btimer_t *tid = start_bsock_timer(dir, 60 * 5);
   bnet_fsend(dir, hello, bashed_name);

   /* respond to Dir challenge */
   if (!cram_md5_respond(dir, password, &tls_remote_need, &compatible) ||
       /* Now challenge dir */
       !cram_md5_challenge(dir, password, tls_local_need, compatible)) {
      stop_bsock_timer(tid);
      printf(_("%s: Director authorization problem.\n"), my_name);
      set_text(_("Director authorization problem.\n"), -1);
      set_text(_(
       "Please see http://www.bacula.org/rel-manual/faq.html#AuthorizationErrors for help.\n"),
        -1);
      return 0;
   }

   Dmsg1(6, ">dird: %s", dir->msg);
   if (bnet_recv(dir) <= 0) {
      stop_bsock_timer(tid);
      set_textf(_("Bad response to Hello command: ERR=%s\n"),
         bnet_strerror(dir));
      printf(_("%s: Bad response to Hello command: ERR=%s\n"),
         my_name, bnet_strerror(dir));
      set_text(_("The Director is probably not running.\n"), -1);
      return 0;
   }
  stop_bsock_timer(tid);
   Dmsg1(10, "<dird: %s", dir->msg);
   if (strncmp(dir->msg, OKhello, sizeof(OKhello)-1) != 0) {
      set_text(_("Director rejected Hello command\n"), -1);
      return 0;
   } else {
      set_text(dir->msg, dir->msglen);
   }
   return 1;
}