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87 lines
2.0 KiB
C
87 lines
2.0 KiB
C
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/* g13-common.c - Common code for G13 modules
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* Copyright (C) 2009, 2015 Werner Koch
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*
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* This file is part of GnuPG.
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*
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* GnuPG is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* GnuPG is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdarg.h>
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#include <errno.h>
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#include <assert.h>
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#include "g13-common.h"
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#include <gcrypt.h>
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#include <assuan.h>
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#include "i18n.h"
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#include "sysutils.h"
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/* Global variable to keep an error count. */
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int g13_errors_seen = 0;
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/* Note: This function is used by signal handlers!. */
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static void
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emergency_cleanup (void)
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{
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gcry_control (GCRYCTL_TERM_SECMEM);
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}
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/* Wrapper around gnupg_init_signals. */
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void
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g13_init_signals (void)
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{
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gnupg_init_signals (0, emergency_cleanup);
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}
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/* Install a regular exit handler to make real sure that the secure
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memory gets wiped out. */
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void
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g13_install_emergency_cleanup (void)
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{
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if (atexit (emergency_cleanup))
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{
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log_error ("atexit failed\n");
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g13_exit (2);
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}
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}
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/* Use this function instead of exit() in all g13 modules. */
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void
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g13_exit (int rc)
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{
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gcry_control (GCRYCTL_UPDATE_RANDOM_SEED_FILE);
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if (opt.debug & DBG_MEMSTAT_VALUE)
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{
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gcry_control( GCRYCTL_DUMP_MEMORY_STATS );
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gcry_control( GCRYCTL_DUMP_RANDOM_STATS );
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}
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if (opt.debug)
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gcry_control (GCRYCTL_DUMP_SECMEM_STATS );
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emergency_cleanup ();
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rc = rc? rc : log_get_errorcount(0)? 2 : g13_errors_seen? 1 : 0;
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exit (rc);
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}
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