/*
** Zabbix
** Copyright (C) 2001-2016 Zabbix SIA
**
** 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.
**/

#include "sysinfo.h"
#include "log.h"

ZBX_METRIC	parameter_hostname =
/*	KEY			FLAG		FUNCTION		TEST PARAMETERS */
	{"system.hostname",     0,              SYSTEM_HOSTNAME,        NULL};

int	SYSTEM_HOSTNAME(AGENT_REQUEST *request, AGENT_RESULT *result)
{
	char	*hostname;
	long 	hostbufsize = 0;

#ifdef _SC_HOST_NAME_MAX
	hostbufsize = sysconf(_SC_HOST_NAME_MAX) + 1;
#endif
	if (0 == hostbufsize)
		hostbufsize = 256;

	hostname = zbx_malloc(NULL, hostbufsize);

	if (0 != gethostname(hostname, hostbufsize))
	{
		zbx_free(hostname);
		SET_MSG_RESULT(result, zbx_dsprintf(NULL, "Cannot obtain system information: %s", zbx_strerror(errno)));
		return SYSINFO_RET_FAIL;
	}

	SET_STR_RESULT(result, hostname);

	return SYSINFO_RET_OK;
}
