86 lines
2.5 KiB
PHP
86 lines
2.5 KiB
PHP
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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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* @version $Id: proxy.php,v 1.3 2006/12/28 16:10:42 milosch Exp $
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* @copyright G. Giunta (C) 2006
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* @author Gaetano Giunta
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*/
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include("xmlrpc.inc");
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include("xmlrpcs.inc");
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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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* @param xmlrpcmsg $m (see method docs below for a description of the expected parameters)
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* @return xmlrpcresp
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*/
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function forward_request($m)
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{
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// create client
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$timeout = 0;
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$url = php_xmlrpc_decode($m->getParam(0));
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$c = new xmlrpc_client($url);
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if ($m->getNumParams() > 3)
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{
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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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$options = php_xmlrpc_decode($m->getParam(3));
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foreach($options as $key => $val)
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{
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switch($key)
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{
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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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$c->setRequestCompression($val);
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break;
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case 'SSLVerifyHost':
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$c->setSSLVerifyHost($val);
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break;
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case 'SSLVerifyPeer':
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$c->setSSLVerifyPeer($val);
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break;
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case 'Timeout':
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$timeout = (integer) $val;
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break;
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} // switch
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}
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}
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// build call for remote server
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/// @todo find a weay to forward client info (such as IP) to server, either
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/// - as xml comments in the payload, or
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/// - using std http header conventions, such as X-forwarded-for...
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$method = php_xmlrpc_decode($m->getParam(1));
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$pars = $m->getParam(2);
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$m = new xmlrpcmsg($method);
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for ($i = 0; $i < $pars->arraySize(); $i++)
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{
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$m->addParam($pars->arraymem($i));
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}
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// add debug info into response we give back to caller
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xmlrpc_debugmsg("Sending to server $url the payload: ".$m->serialize());
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return $c->send($m, $timeout);
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}
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// run the server
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$server = new xmlrpc_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', 'stuct'),
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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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?>
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