/**
* @param CurlWrapper $curl
*
* @return Response|NULL
*/
protected function buildRedirectResponse(CurlWrapper $curl)
{
if ($curl->info['redirect_count'] === 0) {
return NULL;
}
$previous = $last = NULL;
/** @var Response $last */
$parts = Strings::split($curl->responseHeaders, '~(HTTP/\\d\\.\\d\\s\\d+\\s.*)~m', PREG_SPLIT_NO_EMPTY);
while ($rawHeaders = array_shift($parts)) {
if ($http = Strings::match($rawHeaders, CurlWrapper::VERSION_AND_STATUS)) {
if ($http['code'] < 200) {
continue;
}
$rawHeaders .= array_shift($parts);
}
if (!$parts) {
$curl->responseHeaders = $rawHeaders;
return $last;
}
if ($headers = CurlWrapper::parseHeaders($rawHeaders)) {
$previous = new Response($curl, $headers);
if ($last !== NULL) {
$previous->setPrevious($last);
}
}
$last = $previous;
}
return $last;
}
/**
* @param CurlWrapper $curl
* @param string $dir
*
* @throws FileNotWritableException
* @return CurlWrapper
*/
public static function prepareDownload(CurlWrapper $curl, $dir)
{
do {
$fileName = md5($curl->getUrl()) . '.' . Strings::random() . '.tmp';
} while (is_file($dir . '/' . $fileName));
if (($fileHandle = @fopen($curl->file = $dir . '/' . $fileName, 'wb')) === FALSE) {
throw new FileNotWritableException("File {$curl->file} is not writable.");
}
if (($headersHandle = @fopen($curl->file . '.headers', 'wb')) === FALSE) {
throw new FileNotWritableException("File {$curl->file} is not writable.");
}
return $curl->setOptions(array('file' => $fileHandle, 'writeHeader' => $headersHandle, 'binaryTransfer' => TRUE));
}
/**
* @param CurlWrapper $curl
*
* @throws CurlException
* @return array
*/
public static function stripHeaders(CurlWrapper $curl)
{
$curl->responseHeaders = Strings::substring($curl->response, 0, $headerSize = $curl->info['header_size']);
if (!($headers = CurlWrapper::parseHeaders($curl->responseHeaders))) {
throw new CurlException("Failed parsing of response headers");
}
$curl->response = Strings::substring($curl->response, $headerSize);
return $headers;
}
