path: root/crypt.c

/*
 * Copyright (C) 1996-1997 Michael R. Elkins <me@mutt.org>
 * Copyright (C) 1999-2000,2002-2004,2006 Thomas Roessler <roessler@does-not-exist.org>
 * Copyright (C) 2001 Thomas Roessler <roessler@does-not-exist.org>
 *                     Oliver Ehli <elmy@acm.org>
 * Copyright (C) 2003 Werner Koch <wk@gnupg.org>
 * Copyright (C) 2004 g10code GmbH
 *
 *     This program is free software; you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation; either version 2 of the License, or
 *     (at your option) any later version.
 *
 *     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.
 */

#if HAVE_CONFIG_H
# include "config.h"
#endif

#include "mutt.h"
#include "mutt_curses.h"
#include "mime.h"
#include "copy.h"
#include "mutt_crypt.h"

#include <sys/wait.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/stat.h>
#include <errno.h>
#include <ctype.h>

#ifdef HAVE_LOCALE_H
#include <locale.h>
#endif

#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif

#ifdef HAVE_SYS_RESOURCE_H
# include <sys/resource.h>
#endif


/* print the current time to avoid spoofing of the signature output */
void crypt_current_time(STATE *s, char *app_name)
{
  time_t t;
  char p[STRING], tmp[STRING];

  if (!WithCrypto)
    return;

  if (option (OPTCRYPTTIMESTAMP))
  {
    t = time(NULL);
    strftime (p, sizeof (p), _(" (current time: %c)"), localtime (&t));
  }
  else
    *p = '\0';

  snprintf (tmp, sizeof (tmp), _("[-- %s output follows%s --]\n"), NONULL(app_name), p);
  state_attach_puts (tmp, s);
}



void crypt_forget_passphrase (void)
{
  if ((WithCrypto & APPLICATION_PGP))
    crypt_pgp_void_passphrase ();

  if ((WithCrypto & APPLICATION_SMIME))
    crypt_smime_void_passphrase ();

  if (WithCrypto)
    mutt_message _("Passphrase(s) forgotten.");
}


#if defined(HAVE_SETRLIMIT) && (!defined(DEBUG))

static void disable_coredumps (void)
{
  struct rlimit rl = {0, 0};
  static short done = 0;

  if (!done)
  {
    setrlimit (RLIMIT_CORE, &rl);
    done = 1;
  }
}

#endif /* HAVE_SETRLIMIT */


int crypt_valid_passphrase(int flags)
{
  int ret = 0;

# if defined(HAVE_SETRLIMIT) &&(!defined(DEBUG))
  disable_coredumps ();
# endif

  if ((WithCrypto & APPLICATION_PGP) && (flags & APPLICATION_PGP))
    ret = crypt_pgp_valid_passphrase ();

  if ((WithCrypto & APPLICATION_SMIME) && (flags & APPLICATION_SMIME))
    ret = crypt_smime_valid_passphrase ();

  return ret;
}



int mutt_protect (HEADER *msg, char *keylist)
{
  BODY *pbody = NULL, *tmp_pbody = NULL;
  BODY *tmp_smime_pbody = NULL;
  BODY *tmp_pgp_pbody = NULL;
  ENVELOPE *protected_headers = NULL;
  int flags = (WithCrypto & APPLICATION_PGP)? msg->security: 0;
  int i;

  if (!WithCrypto)
    return -1;

  if (!(msg->security & (ENCRYPT</