/**
* Calculates length of the request body, adds proper headers
*
* @param array associative array of request headers, this method will
* add proper 'Content-Length' and 'Content-Type' headers
* to this array (or remove them if not needed)
*/
protected function calculateRequestLength(&$headers)
{
$this->requestBody = $this->request->getBody();
if (is_string($this->requestBody)) {
$this->contentLength = strlen($this->requestBody);
} elseif (is_resource($this->requestBody)) {
$stat = fstat($this->requestBody);
$this->contentLength = $stat['size'];
rewind($this->requestBody);
} else {
$this->contentLength = $this->requestBody->getLength();
$headers['content-type'] = 'multipart/form-data; boundary=' . $this->requestBody->getBoundary();
$this->requestBody->rewind();
}
if (in_array($this->request->getMethod(), self::$bodyDisallowed) || 0 == $this->contentLength) {
// No body: send a Content-Length header nonetheless (request #12900),
// but do that only for methods that require a body (bug #14740)
if (in_array($this->request->getMethod(), self::$bodyRequired)) {
$headers['content-length'] = 0;
} else {
unset($headers['content-length']);
// if the method doesn't require a body and doesn't have a
// body, don't send a Content-Type header. (request #16799)
unset($headers['content-type']);
}
} else {
if (empty($headers['content-type'])) {
$headers['content-type'] = 'application/x-www-form-urlencoded';
}
$headers['content-length'] = $this->contentLength;
}
}
/**
* Handles HTTP redirection
*
* This method will throw an Exception if redirect to a non-HTTP(S) location
* is attempted, also if number of redirects performed already is equal to
* 'max_redirects' configuration parameter.
*
* @param Diglin_HTTP_Request2 Original request
* @param Diglin_HTTP_Request2_Response Response containing redirect
* @return Diglin_HTTP_Request2_Response Response from a new location
* @throws Diglin_HTTP_Request2_Exception
*/
protected function handleRedirect(Diglin_HTTP_Request2 $request, Diglin_HTTP_Request2_Response $response)
{
if (is_null($this->redirectCountdown)) {
$this->redirectCountdown = $request->getConfig('max_redirects');
}
if (0 == $this->redirectCountdown) {
// Copying cURL behaviour
throw new Diglin_HTTP_Request2_Exception('Maximum (' . $request->getConfig('max_redirects') . ') redirects followed');
}
$redirectUrl = new Diglin_Net_URL2($response->getHeader('location'), array(Diglin_Net_URL2::OPTION_USE_BRACKETS => $request->getConfig('use_brackets')));
// refuse non-HTTP redirect
if ($redirectUrl->isAbsolute() && !in_array($redirectUrl->getScheme(), array('http', 'https'))) {
throw new Diglin_HTTP_Request2_Exception('Refusing to redirect to a non-HTTP URL ' . $redirectUrl->__toString());
}
// Theoretically URL should be absolute (see http://tools.ietf.org/html/rfc2616#section-14.30),
// but in practice it is often not
if (!$redirectUrl->isAbsolute()) {
$redirectUrl = $request->getUrl()->resolve($redirectUrl);
}
$redirect = clone $request;
$redirect->setUrl($redirectUrl);
if (303 == $response->getStatus() || !$request->getConfig('strict_redirects') && in_array($response->getStatus(), array(301, 302))) {
$redirect->setMethod(Diglin_HTTP_Request2::METHOD_GET);
$redirect->setBody('');
}
if (0 < $this->redirectCountdown) {
$this->redirectCountdown--;
}
return $this->sendRequest($redirect);
}
/**
* Tries to detect MIME type of a file
*
* The method will try to use fileinfo extension if it is available,
* deprecated mime_content_type() function in the other case. If neither
* works, default 'application/octet-stream' MIME type is returned
*
* @param string filename
* @return string file MIME type
*/
protected static function detectMimeType($filename)
{
// finfo extension from PECL available
if (function_exists('finfo_open')) {
if (!isset(self::$_fileinfoDb)) {
self::$_fileinfoDb = @finfo_open(FILEINFO_MIME);
}
if (self::$_fileinfoDb) {
$info = finfo_file(self::$_fileinfoDb, $filename);
}
}
// (deprecated) mime_content_type function available
if (empty($info) && function_exists('mime_content_type')) {
return mime_content_type($filename);
}
return empty($info) ? 'application/octet-stream' : $info;
}
/**
* Sends request to the remote server and returns its response
*
* @param Diglin_HTTP_Request2
* @return Diglin_HTTP_Request2_Response
* @throws Diglin_HTTP_Request2_Exception
*/
public function sendRequest(Diglin_HTTP_Request2 $request)
{
if (!extension_loaded('curl')) {
throw new Diglin_HTTP_Request2_Exception('cURL extension not available');
}
$this->request = $request;
$this->response = null;
$this->position = 0;
$this->eventSentHeaders = false;
$this->eventReceivedHeaders = false;
try {
if (false === curl_exec($ch = $this->createCurlHandle())) {
$errorMessage = 'Error sending request: #' . curl_errno($ch) . ' ' . curl_error($ch);
}
} catch (Exception $e) {
}
$this->lastInfo = curl_getinfo($ch);
curl_close($ch);
$response = $this->response;
unset($this->request, $this->requestBody, $this->response);
if (!empty($e)) {
throw $e;
} elseif (!empty($errorMessage)) {
throw new Diglin_HTTP_Request2_Exception($errorMessage);
}
if (0 < $this->lastInfo['size_download']) {
$request->setLastEvent('receivedBody', $response);
}
return $response;
}
