/
proxy.php
84 lines (78 loc) · 2.94 KB
/
proxy.php
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
<?php
/**
* XMLRPC server acting as proxy for requests to other servers
* (useful e.g. for ajax-originated calls that can only connect back to
* the originating server).
*
* @author Gaetano Giunta
* @copyright (C) 2006-2015 G. Giunta
* @license code licensed under the BSD License: http://phpxmlrpc.sourceforge.net/license.txt
*/
include_once __DIR__ . "/../../vendor/autoload.php";
include_once __DIR__ . "/../../lib/xmlrpc.inc";
include_once __DIR__ . "/../../lib/xmlrpcs.inc";
/**
* Forward an xmlrpc request to another server, and return to client the response received.
*
* @param xmlrpcmsg $m (see method docs below for a description of the expected parameters)
*
* @return xmlrpcresp
*/
function forward_request($m)
{
// create client
$timeout = 0;
$url = php_xmlrpc_decode($m->getParam(0));
$c = new xmlrpc_client($url);
if ($m->getNumParams() > 3) {
// we have to set some options onto the client.
// Note that if we do not untaint the received values, warnings might be generated...
$options = php_xmlrpc_decode($m->getParam(3));
foreach ($options as $key => $val) {
switch ($key) {
case 'Cookie':
break;
case 'Credentials':
break;
case 'RequestCompression':
$c->setRequestCompression($val);
break;
case 'SSLVerifyHost':
$c->setSSLVerifyHost($val);
break;
case 'SSLVerifyPeer':
$c->setSSLVerifyPeer($val);
break;
case 'Timeout':
$timeout = (integer)$val;
break;
} // switch
}
}
// build call for remote server
/// @todo find a weay to forward client info (such as IP) to server, either
/// - as xml comments in the payload, or
/// - using std http header conventions, such as X-forwarded-for...
$method = php_xmlrpc_decode($m->getParam(1));
$pars = $m->getParam(2);
$m = new xmlrpcmsg($method);
for ($i = 0; $i < $pars->arraySize(); $i++) {
$m->addParam($pars->arraymem($i));
}
// add debug info into response we give back to caller
xmlrpc_debugmsg("Sending to server $url the payload: " . $m->serialize());
return $c->send($m, $timeout);
}
// run the server
$server = new xmlrpc_server(
array(
'xmlrpcproxy.call' => array(
'function' => 'forward_request',
'signature' => array(
array('mixed', 'string', 'string', 'array'),
array('mixed', 'string', 'string', 'array', 'stuct'),
),
'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',
),
)
);