89 lines
3.0 KiB
PHP
89 lines
3.0 KiB
PHP
<?php
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/**
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* XMLRPC server acting as proxy for requests to other servers
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* (useful e.g. for ajax-originated calls that can only connect back to
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* the originating server).
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*
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* @author Gaetano Giunta
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* @copyright (C) 2006-2015 G. Giunta
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* @license code licensed under the BSD License: see file license.txt
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*/
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include_once __DIR__ . "/../../src/Autoloader.php";
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PhpXmlRpc\Autoloader::register();
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/**
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* Forward an xmlrpc request to another server, and return to client the response received.
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*
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* DO NOT RUN AS IS IN PRODUCTION - this is an open relay !!!
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*
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* @param PhpXmlRpc\Request $req (see method docs below for a description of the expected parameters)
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*
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* @return PhpXmlRpc\Response
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*/
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function forward_request($req)
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{
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$encoder = new \PhpXmlRpc\Encoder();
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// create client
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$timeout = 0;
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$url = $encoder->decode($req->getParam(0));
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$client = new PhpXmlRpc\Client($url);
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if ($req->getNumParams() > 3) {
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// we have to set some options onto the client.
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// Note that if we do not untaint the received values, warnings might be generated...
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$options = $encoder->decode($req->getParam(3));
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foreach ($options as $key => $val) {
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switch ($key) {
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case 'Cookie':
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break;
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case 'Credentials':
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break;
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case 'RequestCompression':
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$client->setRequestCompression($val);
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break;
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case 'SSLVerifyHost':
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$client->setSSLVerifyHost($val);
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break;
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case 'SSLVerifyPeer':
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$client->setSSLVerifyPeer($val);
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break;
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case 'Timeout':
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$timeout = (integer)$val;
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break;
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} // switch
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}
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}
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// build call for remote server
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/// @todo find a way to forward client info (such as IP) to server, either
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/// - as xml comments in the payload, or
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/// - using std http header conventions, such as X-forwarded-for...
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$reqMethod = $encoder->decode($req->getParam(1));
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$pars = $req->getParam(2);
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$req = new PhpXmlRpc\Request($reqMethod);
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foreach ($pars as $par) {
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$req->addParam($par);
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}
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// add debug info into response we give back to caller
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PhpXmlRpc\Server::xmlrpc_debugmsg("Sending to server $url the payload: " . $req->serialize());
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return $client->send($req, $timeout);
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}
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// run the server
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$server = new PhpXmlRpc\Server(
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array(
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'xmlrpcproxy.call' => array(
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'function' => 'forward_request',
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'signature' => array(
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array('mixed', 'string', 'string', 'array'),
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array('mixed', 'string', 'string', 'array', 'struct'),
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),
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'docstring' => 'forwards xmlrpc calls to remote servers. Returns remote method\'s response. Accepts params: remote server url (might include basic auth credentials), method name, array of params, and (optionally) a struct containing call options',
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),
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)
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);
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