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/*
** Copyright 2001-2003 Double Precision, Inc. See COPYING for
** distribution information.
*/
static const char rcsid[]="$Id: libgpg.c,v 1.2 2003/06/02 23:47:16 mrsam Exp $";
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <signal.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#if HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#if HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#ifndef WEXITSTATUS
#define WEXITSTATUS(stat_val) ((unsigned)(stat_val) >> 8)
#endif
#ifndef WIFEXITED
#define WIFEXITED(stat_val) (((stat_val) & 255) == 0)
#endif
#include "gpg.h"
#include "gpglib.h"
int libmail_gpg_stdin= -1, libmail_gpg_stdout= -1,
libmail_gpg_stderr= -1;
pid_t libmail_gpg_pid= -1;
int libmail_gpg_cleanup()
{
int rc=0;
if (libmail_gpg_stdin >= 0)
{
close(libmail_gpg_stdin);
libmail_gpg_stdin= -1;
}
if (libmail_gpg_stdout >= 0)
{
close(libmail_gpg_stdout);
libmail_gpg_stdout= -1;
}
if (libmail_gpg_stderr >= 0)
{
close(libmail_gpg_stderr);
libmail_gpg_stderr= -1;
}
if (libmail_gpg_pid >= 0 && kill(libmail_gpg_pid, 0) >= 0)
{
int waitstat;
pid_t p;
while ((p=wait(&waitstat)) != libmail_gpg_pid)
{
if (p < 0 && errno == ECHILD)
return (-1);
}
rc= WIFEXITED(waitstat) ? WEXITSTATUS(waitstat): -1;
libmail_gpg_pid= -1;
}
return (rc);
}
static char *optionfile(const char *gpgdir)
{
char *p=malloc(strlen(gpgdir)+sizeof("/options"));
if (p)
strcat(strcpy(p, gpgdir), "/options");
return (p);
}
/*
** Determine of GPG is available by checking for the options file, and the
** gpg binary itself.
*/
int libmail_gpg_has_gpg(const char *gpgdir)
{
char *p=optionfile(gpgdir);
struct stat stat_buf;
int rc;
if (!p)
return (-1);
rc=stat(p, &stat_buf);
free(p);
if (rc == 0)
rc=stat(GPG, &stat_buf);
return (rc);
}
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