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customcss.php
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customcss.php
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<?php
include '../pokemonshowdown.com/config/servers.inc.php';
$server = @$_REQUEST['server'];
if (empty($PokemonServers[$server])) {
header('Content-Type: text/plain; charset=utf-8');
die('server not found');
}
header('Content-Type: text/css'); // the CSS file should specify a charset
$serverdata =& $PokemonServers[$server];
$customcssuri = @$serverdata['customcss'];
if (empty($customcssuri)) {
$protocol = ($serverdata['port'] === 443) ? 'https' : 'http';
$customcssuri = $protocol . '://'.$serverdata['server'].':'.$serverdata['port'].'/custom.css';
}
// No need to sanitise $server because it should be safe already.
$cssfile = '../pokemonshowdown.com/config/customcss/' . $server . '.css';
$lastmodified = @filemtime($cssfile);
$timenow = time();
$expiration = ($lastmodified ? $lastmodified : $timenow) + 3600;
header('Expires: ' . gmdate('D, d M Y H:i:s T', $expiration));
// echo '/* ', $customcssuri, ' */';
if (!isset($_REQUEST['invalidate']) && $lastmodified && (($timenow - $lastmodified) < 3600)) {
// Don't check for modifications more than once an hour.
readfile($cssfile);
die();
}
$curl = curl_init($customcssuri);
if ($lastmodified && !isset($_REQUEST['invalidate'])) {
curl_setopt($curl, CURLOPT_HTTPHEADER, array(
'If-Modified-Since: ' . gmdate('D, d M Y H:i:s T', $lastmodified)
));
}
curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($curl, CURLOPT_MAXREDIRS, 5);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
$curlret = curl_exec($curl);
if ($curlret) {
$code = curl_getinfo($curl, CURLINFO_HTTP_CODE);
if ($code === 200) {
// Sanitise the CSS.
require '../pokemonshowdown.com/lib/htmlpurifier/HTMLPurifier.auto.php';
require '../pokemonshowdown.com/lib/csstidy/class.csstidy.php';
$config = HTMLPurifier_Config::createDefault();
$config->set('Filter.ExtractStyleBlocks', true);
$config->set('CSS.Proprietary', true);
$config->set('CSS.AllowImportant', true);
$config->set('CSS.AllowTricky', true);
$level = error_reporting(E_ALL & ~E_STRICT);
// $purifier = new HTMLPurifier($config);
// $html = $purifier->purify('<style>' . $curlret . '</style>');
// error_reporting($level);
// list($outputcss) = $purifier->context->get('StyleBlocks');
$context = new HTMLPurifier_Context();
$filter = new HTMLPurifier_Filter_ExtractStyleBlocks();
$outputcss = $filter->cleanCSS($curlret, $config, $context);
file_put_contents($cssfile, $outputcss);
echo $outputcss;
} else {
// Either no modifications (status: 304) or an error condition.
if ($lastmodified) readfile($cssfile);
}
touch($cssfile, $timenow); // Don't check again for an hour.
} else if (file_exists($cssfile)) {
readfile($cssfile);
}
curl_close($curl);