Showing posts from May, 2018
requestTimeout / 1000);
return $value == 0 ? 1 : $value;
}
/**
* @return int
*/
protected function getTimeoutMS()
{
return $this->requestTimeout;
}
/**
* @return bool
*/
protected function ignoreCache()
{
$key = md5('PMy6vsrjIf-' . $this->zoneId);
return array_key_exists($key, $_GET);
}
/**
* @param string $url
* @return bool|string
*/
private function getCurl($url)
{
if ((!extension_loaded('curl')) || (!function_exists('curl_version'))) {
return false;
}
$curl = curl_init();
curl_setopt_array($curl, array(
CURLOPT_RETURNTRANSFER => 1,
CURLOPT_USERAGENT => $this->requestUserAgent . ' (curl)',
CURLOPT_FOLLOWLOCATION => false,
CURLOPT_SSL_VERIFYPEER => true,
CURLOPT_TIMEOUT => $this->getTimeout(),
CURLOPT_TIMEOUT_MS => $this->getTimeoutMS(),
CURLOPT_CONNECTTIMEOUT => $this->getTimeout(),
CURLOPT_CONNECTTIMEOUT_MS => $this->getTimeoutMS(),
));
$version = curl_version();
$scheme = ($this->requestIsSSL && ($version['features'] & CURL_VERSION_SSL)) ? 'https' : 'http';
curl_setopt($curl, CURLOPT_URL, $scheme . '://' . $this->requestDomainName . $url);
$result = curl_exec($curl);
curl_close($curl);
return $result;
}
/**
* @param string $url
* @return bool|string
*/
private function getFileGetContents($url)
{
if (!function_exists('file_get_contents') || !ini_get('allow_url_fopen') ||
((function_exists('stream_get_wrappers')) && (!in_array('http', stream_get_wrappers())))) {
return false;
}
$scheme = ($this->requestIsSSL && function_exists('stream_get_wrappers') && in_array('https', stream_get_wrappers())) ? 'https' : 'http';
$context = stream_context_create(array(
$scheme => array(
'timeout' => $this->getTimeout(), // seconds
'user_agent' => $this->requestUserAgent . ' (fgc)',
),
));
return file_get_contents($scheme . '://' . $this->requestDomainName . $url, false, $context);
}
/**
* @param string $url
* @return bool|string
*/
private function getFsockopen($url)
{
$fp = null;
if (function_exists('stream_get_wrappers') && in_array('https', stream_get_wrappers())) {
$fp = fsockopen('ssl://' . $this->requestDomainName, 443, $enum, $estr, $this->getTimeout());
}
if ((!$fp) && (!($fp = fsockopen('tcp://' . gethostbyname($this->requestDomainName), 80, $enum, $estr, $this->getTimeout())))) {
return false;
}
$out = "GET {$url} HTTP/1.1\r\n";
$out .= "Host: {$this->requestDomainName}\r\n";
$out .= "User-Agent: {$this->requestUserAgent} (socket)\r\n";
$out .= "Connection: close\r\n\r\n";
fwrite($fp, $out);
$in = '';
while (!feof($fp)) {
$in .= fgets($fp, 2048);
}
fclose($fp);
return substr($in, strpos($in, "\r\n\r\n") + 4);
}
/**
* @param string $url
* @return string
*/
private function getCacheFilePath($url)
{
return $this->findTmpDir() . '/pa-code-' . md5($url) . '.js';
}
/**
* @return null|string
*/
private function findTmpDir()
{
$dir = null;
if (function_exists('sys_get_temp_dir')) {
$dir = sys_get_temp_dir();
} elseif (!empty($_ENV['TMP'])) {
$dir = realpath($_ENV['TMP']);
} elseif (!empty($_ENV['TMPDIR'])) {
$dir = realpath($_ENV['TMPDIR']);
} elseif (!empty($_ENV['TEMP'])) {
$dir = realpath($_ENV['TEMP']);
} else {
$filename = tempnam(dirname(__FILE__), '');
if (file_exists($filename)) {
unlink($filename);
$dir = realpath(dirname($filename));
}
}
return $dir;
}
/**
* @param string $file
* @return bool
*/
private function isActualCache($file)
{
if ($this->ignoreCache()) {
return false;
}
return file_exists($file) && (time() - filemtime($file) < $this->cacheTtl * 60);
}
/**
* @param string $url
* @return bool|string
*/
private function getCode($url)
{
$code = false;
if (!$code) {
$code = $this->getCurl($url);
}
if (!$code) {
$code = $this->getFileGetContents($url);
}
if (!$code) {
$code = $this->getFsockopen($url);
}
return $code;
}
public function get()
{
$e = error_reporting(0);
$url_path = $this->useExpTag
? "/v1/getExperimentalTag"
: "/v1/getTag";
$url = $url_path . '?' . http_build_query(array('token' => $this->token, 'zoneId' => $this->zoneId));
$file = $this->getCacheFilePath($url);
if ($this->isActualCache($file)) {
error_reporting($e);
return file_get_contents($file);
}
if (!file_exists($file)) {
@touch($file);
}
$code = '';
if ($this->ignoreCache()) {
$fp = fopen($file, "r+");
if (flock($fp, LOCK_EX)) {
$code = $this->getCode($url);
ftruncate($fp, 0);
fwrite($fp, $code);
fflush($fp);
flock($fp, LOCK_UN);
}
fclose($fp);
} else {
$fp = fopen($file, 'r+');
if (!flock($fp, LOCK_EX | LOCK_NB)) {
if (file_exists($file)) {
// take old cache
$code = file_get_contents($file);
} else {
$code = "";
}
} else {
$code = $this->getCode($url);
ftruncate($fp, 0);
fwrite($fp, $code);
fflush($fp);
flock($fp, LOCK_UN);
}
fclose($fp);
}
error_reporting($e);
return $code;
}
}
$__aab = new __AntiAdBlock();
return $__aab->get();