private function getCacheKey(Request $request)
{
// If Vary headers have been passed in, fetch each header and add it to the cache key.
$url = $request->getUri();
$key = 'cache:' . base64_encode($url);
return $key;
}
public function forward(Request $request, $url)
{
// change request URL
$request->setUrl($url);
// prepare request and response objects
$this->request = $request;
$this->response = new Response();
$options = array(CURLOPT_CONNECTTIMEOUT => 10, CURLOPT_TIMEOUT => 0, CURLOPT_RETURNTRANSFER => false, CURLOPT_HEADER => false, CURLOPT_SSL_VERIFYPEER => false, CURLOPT_SSL_VERIFYHOST => false, CURLOPT_FOLLOWLOCATION => false, CURLOPT_AUTOREFERER => false);
// this is probably a good place to add custom curl options that way other critical options below would overwrite that
$config_options = Config::get('curl', array());
$options = array_merge_custom($options, $config_options);
$options[CURLOPT_HEADERFUNCTION] = array($this, 'header_callback');
$options[CURLOPT_WRITEFUNCTION] = array($this, 'write_callback');
// Notify any listeners that the request is ready to be sent, and this is your last chance to make any modifications.
$this->dispatcher->dispatch('request.before_send', new ProxyEvent(array('request' => $this->request, 'response' => $this->response)));
// We may not even need to send this request if response is already available somewhere (CachePlugin)
if ($this->request->params->has('request.complete')) {
// do nothing?
} else {
// any plugin might have changed our URL by this point
$options[CURLOPT_URL] = $this->request->getUri();
// fill in the rest of cURL options
$options[CURLOPT_HTTPHEADER] = explode("\r\n", $this->request->getRawHeaders());
$options[CURLOPT_CUSTOMREQUEST] = $this->request->getMethod();
$options[CURLOPT_POSTFIELDS] = $this->request->getRawBody();
$ch = curl_init();
curl_setopt_array($ch, $options);
// fetch the status - if exception if throw any at callbacks, then the error will be supressed
$result = @curl_exec($ch);
// there must have been an error if at this point
if (!$result) {
$error = sprintf('(%d) %s', curl_errno($ch), curl_error($ch));
throw new \Exception($error);
}
// we have output waiting in the buffer?
$this->response->setContent($this->output_buffer);
// saves memory I would assume?
$this->output_buffer = null;
}
$this->dispatcher->dispatch('request.complete', new ProxyEvent(array('request' => $this->request, 'response' => $this->response)));
return $this->response;
}
$plugin_class = $plugin . 'Plugin';
if (file_exists('./plugins/' . $plugin_class . '.php')) {
// use user plugin from /plugins/
require_once './plugins/' . $plugin_class . '.php';
} else {
if (class_exists('\\Proxy\\Plugin\\' . $plugin_class)) {
// does the native plugin from php-proxy package with such name exist?
$plugin_class = '\\Proxy\\Plugin\\' . $plugin_class;
}
}
// otherwise plugin_class better be loaded already through composer.json and match namespace exactly \\Vendor\\Plugin\\SuperPlugin
$proxy->getEventDispatcher()->addSubscriber(new $plugin_class());
}
try {
// request sent to index.php
$request = Request::createFromGlobals();
// remove all GET parameters such as ?q=
$request->get->clear();
// forward it to some other URL
$response = $proxy->forward($request, $url);
// if that was a streaming response, then everything was already sent and script will be killed before it even reaches this line
$response->send();
} catch (Exception $ex) {
// if the site is on server2.proxy.com then you may wish to redirect it back to proxy.com
if (Config::get("error_redirect")) {
$url = render_string(Config::get("error_redirect"), array('error_msg' => rawurlencode($ex->getMessage())));
// Cannot modify header information - headers already sent
header("HTTP/1.1 302 Found");
header("Location: {$url}");
} else {
echo render_template("./templates/main.php", array('url' => $url, 'error_msg' => $ex->getMessage(), 'version' => Proxy::VERSION));
public static function createFromGlobals()
{
$method = $_SERVER['REQUEST_METHOD'];
$scheme = isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] ? 'https' : 'http';
$url = $scheme . '://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
$request = new Request($method, $url);
// fill in headers
foreach ($_SERVER as $name => $value) {
if (strpos($name, 'HTTP_') === 0) {
$name = substr($name, 5);
$name = str_replace('_', ' ', $name);
$name = ucwords(strtolower($name));
$name = str_replace(' ', '-', $name);
$request->headers->set($name, $value);
}
}
// for extra convenience
//$request->params->set('user-ip', $_SERVER['REMOTE_ADDR']);
// will be empty if content-type is multipart
$input = file_get_contents("php://input");
if (count($_FILES) > 0) {
$request->post->replace($_POST);
$request->files->replace($_FILES);
} else {
if (count($_POST) > 0) {
$request->post->replace($_POST);
} else {
$request->setBody($input);
}
}
// for extra convenience
$request->prepare();
return $request;
}
