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<?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) 2006-2019 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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