접근차단 IP 설정 함수

[code]
function ip_policy($ip_addr = null, $do = 'block') {
global $g5, $config;

if (empty($ip_addr)
|| !in_array($do, array('block', 'allow'))) {
return false;
}

$block_addresses = explode("\n", $config['cf_intercept_ip']);

if (sizeof($block_addresses) === 1
&& empty($block_addresses[0])
&& $do === 'allow') {
return true;
}

$block_addresses = array_flip($block_addresses);

switch ($do) {
case 'block':
$block_addresses[ $ip_addr ] = 1;
unset($block_addresses['']);
break;
case 'allow':
unset($block_addresses[ $ip_addr ]);
unset($block_addresses['']);
break;
}

$sql_data = array(
'cf_intercept_ip' => implode("\n", array_keys($block_addresses)),
);

$sql = sprintf("UPDATE `{$g5['config_table']}`
SET cf_intercept_ip = \"%s\"
WHERE 1", implode("\n", array_keys($block_addresses)));
sql_query($sql);
}
[/code]

차단 설정은 ip_policy('192.168.0.1', 'block');
차단 설정 해제는 ip_policy('192.168.0.1', 'allow');