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/* asshelp.c - Helper functions for Assuan
* Copyright (C) 2002, 2004 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
* GnuPG 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.
*
* GnuPG 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#ifdef HAVE_LOCALE_H
#include <locale.h>
#endif
#include "util.h"
#include "asshelp.h"
static gpg_error_t
send_one_option (assuan_context_t ctx, gpg_err_source_t errsource,
const char *name, const char *value)
{
gpg_error_t err;
char *optstr;
if (!value || !*value)
err = 0; /* Avoid sending empty strings. */
else if (asprintf (&optstr, "OPTION %s=%s", name, value ) < 0)
err = gpg_error_from_errno (errno);
else
{
assuan_error_t ae;
ae = assuan_transact (ctx, optstr, NULL, NULL, NULL, NULL, NULL, NULL);
err = ae? map_assuan_err_with_source (errsource, ae) : 0;
free (optstr);
}
return err;
}
/* Send the assuan commands pertaining to the pinenry environment. The
OPT_* arguments are optional and may be used to override the
defaults taken from the current locale. */
gpg_error_t
send_pinentry_environment (assuan_context_t ctx,
gpg_err_source_t errsource,
const char *opt_display,
const char *opt_ttyname,
const char *opt_ttytype,
const char *opt_lc_ctype,
const char *opt_lc_messages)
{
gpg_error_t err = 0;
char *dft_display = NULL;
char *dft_ttyname = NULL;
char *dft_ttytype = NULL;
char *old_lc = NULL;
char *dft_lc = NULL;
/* Send the DISPLAY variable. */
dft_display = getenv ("DISPLAY");
if (opt_display || dft_display)
{
err = send_one_option (ctx, errsource, "display",
opt_display ? opt_display : dft_display);
if (err)
return err;
}
/* Send the name of the TTY. */
if (!opt_ttyname)
{
dft_ttyname = getenv ("GPG_TTY");
if ((!dft_ttyname || !*dft_ttyname) && ttyname (0))
dft_ttyname = ttyname (0);
}
if (opt_ttyname || dft_ttyname)
{
err = send_one_option (ctx, errsource, "ttyname",
opt_ttyname ? opt_ttyname : dft_ttyname);
if (err)
return err;
}
/* Send the type of the TTY. */
dft_ttytype = getenv ("TERM");
if (opt_ttytype || (dft_ttyname && dft_ttytype))
{
err = send_one_option (ctx, errsource, "ttytype",
opt_ttyname ? opt_ttytype : dft_ttytype);
if (err)
return err;
}
/* Send the value for LC_CTYPE. */
#if defined(HAVE_SETLOCALE) && defined(LC_CTYPE)
old_lc = setlocale (LC_CTYPE, NULL);
if (old_lc)
{
old_lc = strdup (old_lc);
if (!old_lc)
return gpg_error_from_errno (errno);
}
dft_lc = setlocale (LC_CTYPE, "");
#endif
if (opt_lc_ctype || (dft_ttyname && dft_lc))
{
err = send_one_option (ctx, errsource, "lc-ctype",
opt_lc_ctype ? opt_lc_ctype : dft_lc);
}
#if defined(HAVE_SETLOCALE) && defined(LC_CTYPE)
if (old_lc)
{
setlocale (LC_CTYPE, old_lc);
free (old_lc);
}
#endif
if (err)
return err;
/* Send the value for LC_MESSAGES. */
#if defined(HAVE_SETLOCALE) && defined(LC_MESSAGES)
old_lc = setlocale (LC_MESSAGES, NULL);
if (old_lc)
{
old_lc = strdup (old_lc);
if (!old_lc)
return gpg_error_from_errno (errno);
}
dft_lc = setlocale (LC_MESSAGES, "");
#endif
if (opt_lc_messages || (dft_ttyname && dft_lc))
{
err = send_one_option (ctx, errsource, "lc-messages",
opt_lc_messages ? opt_lc_messages : dft_lc);
}
#if defined(HAVE_SETLOCALE) && defined(LC_MESSAGES)
if (old_lc)
{
setlocale (LC_MESSAGES, old_lc);
free (old_lc);
}
#endif
if (err)
return err;
return 0;
}

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