d1f8640a3b
Also made file/class documentation more consistent. Change-Id: Ia45d0756cd84138da267bf1cbd1a58be7f28c6d1
126 lines
3.4 KiB
PHP
126 lines
3.4 KiB
PHP
<?php
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/**
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* Functions for dealing with proxies.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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*/
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/**
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* Extracts the XFF string from the request header
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* Note: headers are spoofable
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*
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* @deprecated in 1.19; use $wgRequest->getHeader( 'X-Forwarded-For' ) instead.
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* @return string
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*/
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function wfGetForwardedFor() {
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wfDeprecated( __METHOD__, '1.19' );
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global $wgRequest;
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return $wgRequest->getHeader( 'X-Forwarded-For' );
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}
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/**
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* Returns the browser/OS data from the request header
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* Note: headers are spoofable
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*
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* @deprecated in 1.18; use $wgRequest->getHeader( 'User-Agent' ) instead.
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* @return string
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*/
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function wfGetAgent() {
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wfDeprecated( __METHOD__, '1.18' );
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global $wgRequest;
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return $wgRequest->getHeader( 'User-Agent' );
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}
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/**
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* Work out the IP address based on various globals
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* For trusted proxies, use the XFF client IP (first of the chain)
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*
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* @deprecated in 1.19; call $wgRequest->getIP() directly.
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* @return string
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*/
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function wfGetIP() {
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wfDeprecated( __METHOD__, '1.19' );
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global $wgRequest;
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return $wgRequest->getIP();
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}
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/**
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* Checks if an IP is a trusted proxy providor.
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* Useful to tell if X-Fowarded-For data is possibly bogus.
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* Squid cache servers for the site are whitelisted.
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*
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* @param $ip String
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* @return bool
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*/
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function wfIsTrustedProxy( $ip ) {
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$trusted = wfIsConfiguredProxy( $ip );
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wfRunHooks( 'IsTrustedProxy', array( &$ip, &$trusted ) );
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return $trusted;
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}
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/**
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* Checks if an IP matches a proxy we've configured.
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* @param $ip String
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* @return bool
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*/
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function wfIsConfiguredProxy( $ip ) {
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global $wgSquidServers, $wgSquidServersNoPurge;
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$trusted = in_array( $ip, $wgSquidServers ) ||
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in_array( $ip, $wgSquidServersNoPurge );
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return $trusted;
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}
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/**
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* Forks processes to scan the originating IP for an open proxy server
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* MemCached can be used to skip IPs that have already been scanned
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*/
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function wfProxyCheck() {
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global $wgBlockOpenProxies, $wgProxyPorts, $wgProxyScriptPath;
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global $wgMemc, $wgProxyMemcExpiry, $wgRequest;
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global $wgProxyKey;
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if ( !$wgBlockOpenProxies ) {
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return;
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}
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$ip = $wgRequest->getIP();
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# Get MemCached key
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$mcKey = wfMemcKey( 'proxy', 'ip', $ip );
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$mcValue = $wgMemc->get( $mcKey );
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$skip = (bool)$mcValue;
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# Fork the processes
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if ( !$skip ) {
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$title = SpecialPage::getTitleFor( 'Blockme' );
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$iphash = md5( $ip . $wgProxyKey );
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$url = wfExpandUrl( $title->getFullURL( 'ip='.$iphash ), PROTO_HTTP );
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foreach ( $wgProxyPorts as $port ) {
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$params = implode( ' ', array(
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escapeshellarg( $wgProxyScriptPath ),
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escapeshellarg( $ip ),
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escapeshellarg( $port ),
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escapeshellarg( $url )
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));
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exec( "php $params >" . wfGetNull() . " 2>&1 &" );
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}
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# Set MemCached key
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$wgMemc->set( $mcKey, 1, $wgProxyMemcExpiry );
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}
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}
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