/**
* Fetches update information from the server using cURL
* @return string The raw server data
*/
private function fetchCURL()
{
$config = LiveUpdateConfig::getInstance();
$extInfo = $config->getExtensionInformation();
$url = $extInfo['updateurl'];
$process = curl_init($url);
$config = new LiveUpdateConfig();
$config->applyCACert($process);
curl_setopt($process, CURLOPT_HEADER, 0);
// Pretend we are Firefox, so that webservers play nice with us
curl_setopt($process, CURLOPT_USERAGENT, 'Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.14) Gecko/20110105 Firefox/3.6.14');
curl_setopt($process, CURLOPT_ENCODING, 'gzip');
curl_setopt($process, CURLOPT_TIMEOUT, 10);
curl_setopt($process, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($process, CURLOPT_SSL_VERIFYPEER, false);
// The @ sign allows the next line to fail if open_basedir is set or if safe mode is enabled
@curl_setopt($process, CURLOPT_FOLLOWLOCATION, 1);
@curl_setopt($process, CURLOPT_MAXREDIRS, 20);
$inidata = curl_exec($process);
curl_close($process);
return $inidata;
}
/**
* Downloads the contents of a URL and writes them to disk (if $fp is not null)
* or returns them as a string (if $fp is null)
* @param string $url The URL to download from
* @param resource $fp The file pointer to download to. Omit to return the contents.
* @return bool|string False on failure, true on success ($fp not null) or the URL contents (if $fp is null)
*/
private static function &getCURL($url, $fp = null, $nofollow = false)
{
$result = false;
$ch = curl_init($url);
$config = new LiveUpdateConfig();
$config->applyCACert($ch);
if (!@curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1) && !$nofollow) {
// Safe Mode is enabled. We have to fetch the headers and
// parse any redirections present in there.
curl_setopt($ch, CURLOPT_AUTOREFERER, true);
curl_setopt($ch, CURLOPT_FAILONERROR, true);
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
curl_setopt($ch, CURLOPT_TIMEOUT, 30);
// Get the headers
$data = curl_exec($ch);
curl_close($ch);
// Init
$newURL = $url;
// Parse the headers
$lines = explode("\n", $data);
foreach ($lines as $line) {
if (substr($line, 0, 9) == "Location:") {
$newURL = trim(substr($line, 9));
}
}
// Download from the new URL
if ($url != $newURL) {
return self::getCURL($newURL, $fp);
} else {
return self::getCURL($newURL, $fp, true);
}
} else {
@curl_setopt($ch, CURLOPT_MAXREDIRS, 20);
}
curl_setopt($ch, CURLOPT_AUTOREFERER, true);
curl_setopt($ch, CURLOPT_FAILONERROR, true);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
curl_setopt($ch, CURLOPT_TIMEOUT, 30);
// Pretend we are IE7, so that webservers play nice with us
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.0.3705; .NET CLR 1.1.4322; Media Center PC 4.0)');
if (is_resource($fp)) {
curl_setopt($ch, CURLOPT_FILE, $fp);
}
$result = curl_exec($ch);
curl_close($ch);
return $result;
}
