<?php
/**
- * Functions for dealing with proxies
+ * Functions for dealing with proxies.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
*/
+/**
+ * Extracts the XFF string from the request header
+ * Note: headers are spoofable
+ *
+ * @deprecated in 1.19; use $wgRequest->getHeader( 'X-Forwarded-For' ) instead.
+ * @return string
+ */
function wfGetForwardedFor() {
- if( function_exists( 'apache_request_headers' ) ) {
- // More reliable than $_SERVER due to case and -/_ folding
- $set = apache_request_headers();
- $index = 'X-Forwarded-For';
- } else {
- // Subject to spoofing with headers like X_Forwarded_For
- $set = $_SERVER;
- $index = 'HTTP_X_FORWARDED_FOR';
- }
- if( isset( $set[$index] ) ) {
- return $set[$index];
- } else {
- return null;
- }
+ wfDeprecated( __METHOD__, '1.19' );
+ global $wgRequest;
+ return $wgRequest->getHeader( 'X-Forwarded-For' );
}
-/** Work out the IP address based on various globals */
-function wfGetIP() {
- global $wgIP;
-
- # Return cached result
- if ( !empty( $wgIP ) ) {
- return $wgIP;
- }
-
- /* collect the originating ips */
- # Client connecting to this webserver
- if ( isset( $_SERVER['REMOTE_ADDR'] ) ) {
- $ipchain = array( IP::canonicalize( $_SERVER['REMOTE_ADDR'] ) );
- } else {
- # Running on CLI?
- $ipchain = array( '127.0.0.1' );
- }
- $ip = $ipchain[0];
-
- # Append XFF on to $ipchain
- $forwardedFor = wfGetForwardedFor();
- if ( isset( $forwardedFor ) ) {
- $xff = array_map( 'trim', explode( ',', $forwardedFor ) );
- $xff = array_reverse( $xff );
- $ipchain = array_merge( $ipchain, $xff );
- }
-
- # Step through XFF list and find the last address in the list which is a trusted server
- # Set $ip to the IP address given by that trusted server, unless the address is not sensible (e.g. private)
- foreach ( $ipchain as $i => $curIP ) {
- $curIP = IP::canonicalize( $curIP );
- if ( wfIsTrustedProxy( $curIP ) ) {
- if ( isset( $ipchain[$i + 1] ) && IP::isPublic( $ipchain[$i + 1] ) ) {
- $ip = $ipchain[$i + 1];
- }
- } else {
- break;
- }
- }
+/**
+ * Returns the browser/OS data from the request header
+ * Note: headers are spoofable
+ *
+ * @deprecated in 1.18; use $wgRequest->getHeader( 'User-Agent' ) instead.
+ * @return string
+ */
+function wfGetAgent() {
+ wfDeprecated( __METHOD__, '1.18' );
+ global $wgRequest;
+ return $wgRequest->getHeader( 'User-Agent' );
+}
- wfDebug( "IP: $ip\n" );
- $wgIP = $ip;
- return $ip;
+/**
+ * Work out the IP address based on various globals
+ * For trusted proxies, use the XFF client IP (first of the chain)
+ *
+ * @deprecated in 1.19; call $wgRequest->getIP() directly.
+ * @return string
+ */
+function wfGetIP() {
+ wfDeprecated( __METHOD__, '1.19' );
+ global $wgRequest;
+ return $wgRequest->getIP();
}
+/**
+ * Checks if an IP is a trusted proxy providor.
+ * Useful to tell if X-Fowarded-For data is possibly bogus.
+ * Squid cache servers for the site are whitelisted.
+ *
+ * @param $ip String
+ * @return bool
+ */
function wfIsTrustedProxy( $ip ) {
- global $wgSquidServers, $wgSquidServersNoPurge;
-
- if ( in_array( $ip, $wgSquidServers ) ||
- in_array( $ip, $wgSquidServersNoPurge ) ||
- wfIsAOLProxy( $ip )
- ) {
- $trusted = true;
- } else {
- $trusted = false;
- }
+ $trusted = wfIsConfiguredProxy( $ip );
wfRunHooks( 'IsTrustedProxy', array( &$ip, &$trusted ) );
return $trusted;
}
+/**
+ * Checks if an IP matches a proxy we've configured.
+ * @param $ip String
+ * @return bool
+ */
+function wfIsConfiguredProxy( $ip ) {
+ global $wgSquidServers, $wgSquidServersNoPurge;
+ $trusted = in_array( $ip, $wgSquidServers ) ||
+ in_array( $ip, $wgSquidServersNoPurge );
+ return $trusted;
+}
+
/**
* Forks processes to scan the originating IP for an open proxy server
* MemCached can be used to skip IPs that have already been scanned
*/
function wfProxyCheck() {
global $wgBlockOpenProxies, $wgProxyPorts, $wgProxyScriptPath;
- global $wgUseMemCached, $wgMemc, $wgProxyMemcExpiry;
+ global $wgMemc, $wgProxyMemcExpiry, $wgRequest;
global $wgProxyKey;
if ( !$wgBlockOpenProxies ) {
return;
}
- $ip = wfGetIP();
+ $ip = $wgRequest->getIP();
# Get MemCached key
- $skip = false;
- if ( $wgUseMemCached ) {
- $mcKey = wfMemcKey( 'proxy', 'ip', $ip );
- $mcValue = $wgMemc->get( $mcKey );
- if ( $mcValue ) {
- $skip = true;
- }
- }
+ $mcKey = wfMemcKey( 'proxy', 'ip', $ip );
+ $mcValue = $wgMemc->get( $mcKey );
+ $skip = (bool)$mcValue;
# Fork the processes
if ( !$skip ) {
$title = SpecialPage::getTitleFor( 'Blockme' );
$iphash = md5( $ip . $wgProxyKey );
- $url = $title->getFullURL( 'ip='.$iphash );
+ $url = wfExpandUrl( $title->getFullURL( 'ip='.$iphash ), PROTO_HTTP );
foreach ( $wgProxyPorts as $port ) {
$params = implode( ' ', array(
escapeshellarg( $port ),
escapeshellarg( $url )
));
- exec( "php $params &>/dev/null &" );
+ exec( "php $params >" . wfGetNull() . " 2>&1 &" );
}
# Set MemCached key
- if ( $wgUseMemCached ) {
- $wgMemc->set( $mcKey, 1, $wgProxyMemcExpiry );
- }
- }
-}
-
-/**
- * Convert a network specification in CIDR notation to an integer network and a number of bits
- */
-function wfParseCIDR( $range ) {
- return IP::parseCIDR( $range );
-}
-
-/**
- * Check if an IP address is in the local proxy list
- */
-function wfIsLocallyBlockedProxy( $ip ) {
- global $wgProxyList;
- $fname = 'wfIsLocallyBlockedProxy';
-
- if ( !$wgProxyList ) {
- return false;
- }
- wfProfileIn( $fname );
-
- if ( !is_array( $wgProxyList ) ) {
- # Load from the specified file
- $wgProxyList = array_map( 'trim', file( $wgProxyList ) );
+ $wgMemc->set( $mcKey, 1, $wgProxyMemcExpiry );
}
-
- if ( !is_array( $wgProxyList ) ) {
- $ret = false;
- } elseif ( array_search( $ip, $wgProxyList ) !== false ) {
- $ret = true;
- } elseif ( array_key_exists( $ip, $wgProxyList ) ) {
- # Old-style flipped proxy list
- $ret = true;
- } else {
- $ret = false;
- }
- wfProfileOut( $fname );
- return $ret;
}
-
-/**
- * TODO: move this list to the database in a global IP info table incorporating
- * trusted ISP proxies, blocked IP addresses and open proxies.
- */
-function wfIsAOLProxy( $ip ) {
- $ranges = array(
- '64.12.96.0/19',
- '149.174.160.0/20',
- '152.163.240.0/21',
- '152.163.248.0/22',
- '152.163.252.0/23',
- '152.163.96.0/22',
- '152.163.100.0/23',
- '195.93.32.0/22',
- '195.93.48.0/22',
- '195.93.64.0/19',
- '195.93.96.0/19',
- '195.93.16.0/20',
- '198.81.0.0/22',
- '198.81.16.0/20',
- '198.81.8.0/23',
- '202.67.64.128/25',
- '205.188.192.0/20',
- '205.188.208.0/23',
- '205.188.112.0/20',
- '205.188.146.144/30',
- '207.200.112.0/21',
- );
-
- static $parsedRanges;
- if ( is_null( $parsedRanges ) ) {
- $parsedRanges = array();
- foreach ( $ranges as $range ) {
- $parsedRanges[] = IP::parseRange( $range );
- }
- }
-
- $hex = IP::toHex( $ip );
- foreach ( $parsedRanges as $range ) {
- if ( $hex >= $range[0] && $hex <= $range[1] ) {
- return true;
- }
- }
- return false;
-}
-
-
-
-?>
dépôts / lhc / web / wiklou.git / blobdiff