<?php
/**
* Functions for dealing with proxies
- * @package MediaWiki
*/
function wfGetForwardedFor() {
// More reliable than $_SERVER due to case and -/_ folding
$set = apache_request_headers();
$index = 'X-Forwarded-For';
+ $index2 = 'Client-ip';
} else {
// Subject to spoofing with headers like X_Forwarded_For
$set = $_SERVER;
$index = 'HTTP_X_FORWARDED_FOR';
+ $index2 = 'CLIENT-IP';
}
+ #Try a couple of headers
if( isset( $set[$index] ) ) {
return $set[$index];
+ } else if( isset( $set[$index2] ) ) {
+ return $set[$index2];
} else {
return null;
}
}
+function wfGetLastIPfromXFF( $xff ) {
+ if ( $xff ) {
+ // Avoid annoyingly long xff hacks
+ $xff = substr( $xff, 0, 255 );
+ // Look for the last IP, assuming they are separated by commas or spaces
+ $n = ( strrpos($xff, ',') ) ? strrpos($xff, ',') : strrpos($xff, ' ');
+ if ( strrpos !== false ) {
+ $last = trim( substr( $xff, $n + 1 ) );
+ // Make sure it is an IP
+ $m = preg_match('#\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}#', $last, $last_ip4);
+ $n = preg_match('#:(:[0-9A-Fa-f]{1,4}){1,7}|[0-9A-Fa-f]{1,4}(:{1,2}[0-9A-Fa-f]{1,4}|::$){1,7}#', $last, $last_ip6);
+ if ( $m > 0 )
+ $xff_ip = $last_ip4;
+ else if ( $n > 0 )
+ $xff_ip = $last_ip6;
+ else
+ $xff_ip = null;
+ } else {
+ $xff_ip = null;
+ }
+ } else {
+ $xff_ip = null;
+ }
+ return $xff_ip;
+}
+
+function wfGetAgent() {
+ if( function_exists( 'apache_request_headers' ) ) {
+ // More reliable than $_SERVER due to case and -/_ folding
+ $set = apache_request_headers();
+ $index = 'User-Agent';
+ } else {
+ // Subject to spoofing with headers like X_Forwarded_For
+ $set = $_SERVER;
+ $index = 'HTTP_USER_AGENT';
+ }
+ if( isset( $set[$index] ) ) {
+ return $set[$index];
+ } else {
+ return '';
+ }
+}
+
/** Work out the IP address based on various globals */
function wfGetIP() {
- global $wgSquidServers, $wgSquidServersNoPurge, $wgIP;
+ global $wgIP;
# Return cached result
if ( !empty( $wgIP ) ) {
/* collect the originating ips */
# Client connecting to this webserver
if ( isset( $_SERVER['REMOTE_ADDR'] ) ) {
- $ipchain = array( $_SERVER['REMOTE_ADDR'] );
+ $ipchain = array( IP::canonicalize( $_SERVER['REMOTE_ADDR'] ) );
} else {
# Running on CLI?
$ipchain = array( '127.0.0.1' );
}
$ip = $ipchain[0];
- # Get list of trusted proxies
- # Flipped for quicker access
- $trustedProxies = array_flip( array_merge( $wgSquidServers, $wgSquidServersNoPurge ) );
- if ( count( $trustedProxies ) ) {
- # 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 ) {
- if ( array_key_exists( $curIP, $trustedProxies ) ) {
- if ( isset( $ipchain[$i + 1] ) && IP::isPublic( $ipchain[$i + 1] ) ) {
- $ip = $ipchain[$i + 1];
- }
- } else {
- break;
+ # 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;
}
}
return $ip;
}
+function wfIsTrustedProxy( $ip ) {
+ global $wgSquidServers, $wgSquidServersNoPurge;
+
+ if ( in_array( $ip, $wgSquidServers ) ||
+ in_array( $ip, $wgSquidServersNoPurge ) ||
+ wfIsAOLProxy( $ip )
+ ) {
+ $trusted = true;
+ } else {
+ $trusted = false;
+ }
+ wfRunHooks( 'IsTrustedProxy', array( &$ip, &$trusted ) );
+ 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
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