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/*
* Copyright (c) 2002-2019 Balabit
* Copyright (c) 1998-2019 Balázs Scheidler
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As an additional exemption you are allowed to compile & link against the
* OpenSSL libraries as published by the OpenSSL project. See the file
* COPYING for details.
*
*/
#include "timeutils/zonedb.h"
#include "pathutils.h"
#include "reloc.h"
#include <unistd.h>
static const gchar *time_zone_path_list[] =
{
#ifdef PATH_TIMEZONEDIR
PATH_TIMEZONEDIR, /* search the user specified dir */
#endif
SYSLOG_NG_PATH_PREFIX "/share/zoneinfo/", /* then local installation first */
"/usr/share/zoneinfo/", /* linux */
"/usr/share/lib/zoneinfo/", /* solaris, AIX */
NULL,
};
static const gchar *time_zone_basedir = NULL;
const gchar *
get_time_zone_basedir(void)
{
int i = 0;
if (!time_zone_basedir)
{
for (i = 0; time_zone_path_list[i] != NULL; i++)
{
const gchar *candidate = get_installation_path_for(time_zone_path_list[i]);
if (is_file_directory(candidate))
{
time_zone_basedir = candidate;
break;
}
}
}
return time_zone_basedir;
}
gboolean
is_time_zone_valid(const gchar *tz)
{
gchar *filename = g_build_path(G_DIR_SEPARATOR_S, get_time_zone_basedir(), tz, NULL);
gboolean result = access(filename, R_OK) == 0;
g_free(filename);
return result;
}
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