public function onCompleted(ProxyEvent $event)
{
// to be used when proxifying all the relative links
$this->base_url = $event['request']->getUri();
$response = $event['response'];
$str = $response->getContent();
// let's remove all frames??
$str = preg_replace('@<iframe[^>]+>.*?<\\/iframe>@is', '', $str);
// let's replace page titles with something custom
if (Config::get('replace_title')) {
$str = preg_replace('/<title[^>]*>(.*?)<\\/title>/ims', '<title>' . Config::get('replace_title') . '</title>', $str);
}
// css
$str = preg_replace_callback('@:\\s*url\\s*\\((?:\'|"|)(.*?)(?:\'|"|)\\)@im', array($this, 'css_url'), $str);
// https://developer.mozilla.org/en-US/docs/Web/CSS/@import
// TODO: what about @import directives that are outside <style>?
$str = preg_replace_callback('/@import (\'|")(.*?)\\1/i', array($this, 'css_import'), $str);
// html
$str = preg_replace_callback('@href\\s*=\\s*(["\'])(.+?)\\1@im', array($this, 'html_href'), $str);
//$str = preg_replace_callback('@src=["|\']([^"\']+)["|\']@i', array($this, 'html_src'), $str);
$str = preg_replace_callback('@src\\s*=\\s*(["|\'])(.+?)\\1@i', array($this, 'html_src'), $str);
// sometimes form action is empty - which means a postback to the current page
$str = preg_replace_callback('@<form[^>]*action=(["\'])(.*?)\\1[^>]*>@i', array($this, 'form_action'), $str);
//$str = str_replace('document.forms[0]', 'document.forms[1]', $str);
$response->setContent($str);
}
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;
}
// 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 function onCompleted(ProxyEvent $event)
{
// to be used when proxifying all the relative links
$this->base_url = $event['request']->getUri();
$response = $event['response'];
$str = $response->getContent();
$content_type = $response->headers->get('content-type');
// DO NOT do any proxification on .js files
if ($content_type == 'text/javascript' || $content_type == 'application/javascript' || $content_type == 'application/x-javascript') {
return;
}
// let's remove all frames?? does not protect against the frames created dynamically via javascript
$str = preg_replace('@<iframe[^>]*>[^<]*<\\/iframe>@is', '', $str);
// let's replace page titles with something custom
if (Config::get('replace_title')) {
$str = preg_replace('/<title[^>]*>(.*?)<\\/title>/ims', '<title>' . Config::get('replace_title') . '</title>', $str);
}
/* css
if {1} is not there then youtube breaks for some reason
*/
$str = preg_replace_callback('@[^a-z]{1}url\\s*\\((?:\'|"|)(.*?)(?:\'|"|)\\)@im', array($this, 'css_url'), $str);
// https://developer.mozilla.org/en-US/docs/Web/CSS/@import
// TODO: what about @import directives that are outside <style>?
$str = preg_replace_callback('/@import (\'|")(.*?)\\1/i', array($this, 'css_import'), $str);
// html .*? just in case href is empty...
$str = preg_replace_callback('@href\\s*=\\s*(["\'])(.*?)\\1@im', array($this, 'html_href'), $str);
/*
src= can be empty - then what?
*/
$str = preg_replace_callback('@src\\s*=\\s*(["|\'])(.*?)\\1@i', array($this, 'html_src'), $str);
// sometimes form action is empty - which means a postback to the current page
$str = preg_replace_callback('@<form[^>]*action=(["\'])(.*?)\\1[^>]*>@i', array($this, 'form_action'), $str);
//$str = str_replace('document.forms[0]', 'document.forms[1]', $str);
$response->setContent($str);
}
function url_decrypt($url, $key = false)
{
$url = Config::get('url_mode') ? base64_url_decode($url) : rawurldecode($url);
if ($key) {
$url = str_rot_pass($url, $key, true);
} else {
if (Config::get('encryption_key')) {
$url = str_rot_pass($url, Config::get('encryption_key'), true);
}
}
return $url;
}
function base64_decrypt($data, $key = false)
{
$data = base64_url_decode($data);
if ($key) {
$data = str_rot_pass($data, $key, true);
} else {
if (Config::get('encryption_key')) {
$data = str_rot_pass($data, Config::get('encryption_key'), true);
}
}
return $data;
}
