* @package MediaWiki
*/
-if ( !defined( 'MEDIAWIKI' ) ) {
- die();
+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;
+ }
}
/** Work out the IP address based on various globals */
function wfGetIP() {
- global $wgSquidServers, $wgSquidServersNoPurge;
+ global $wgSquidServers, $wgSquidServersNoPurge, $wgIP;
+
+ # Return cached result
+ if ( !empty( $wgIP ) ) {
+ return $wgIP;
+ }
/* collect the originating ips */
# Client connecting to this webserver
$trustedProxies = array_flip( array_merge( $wgSquidServers, $wgSquidServersNoPurge ) );
if ( count( $trustedProxies ) ) {
# Append XFF on to $ipchain
- if ( isset( $_SERVER['HTTP_X_FORWARDED_FOR'] ) ) {
- $xff = array_map( 'trim', explode( ',', $_SERVER['HTTP_X_FORWARDED_FOR'] ) );
+ $forwardedFor = wfGetForwardedFor();
+ if ( isset( $forwardedFor ) ) {
+ $xff = array_map( 'trim', explode( ',', $forwardedFor ) );
$xff = array_reverse( $xff );
$ipchain = array_merge( $ipchain, $xff );
}
}
}
+ wfDebug( "IP: $ip\n" );
+ $wgIP = $ip;
return $ip;
}
-/** */
+/**
+ * Given an IP address in dotted-quad notation, returns an unsigned integer.
+ * Like ip2long() except that it actually works and has a consistent error return value.
+ */
function wfIP2Unsigned( $ip ) {
$n = ip2long( $ip );
- if ( $n == -1 ) {
+ if ( $n == -1 || $n === false ) { # Return value on error depends on PHP version
$n = false;
} elseif ( $n < 0 ) {
$n += pow( 2, 32 );
}
/**
- * Determine if an IP address really is an IP address, and if it is public,
+ * Return a zero-padded hexadecimal representation of an IP address
+ */
+function wfIP2Hex( $ip ) {
+ $n = wfIP2Unsigned( $ip );
+ if ( $n !== false ) {
+ $n = sprintf( '%08X', $n );
+ }
+ return $n;
+}
+
+/**
+ * Determine if an IP address really is an IP address, and if it is public,
* i.e. not RFC 1918 or similar
*/
function wfIsIPPublic( $ip ) {
}
return true;
}
-
+
+/**
+ * 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, $wgDBname, $wgProxyMemcExpiry;
+ global $wgProxyKey;
+
+ if ( !$wgBlockOpenProxies ) {
+ return;
+ }
+
+ $ip = wfGetIP();
+
+ # Get MemCached key
+ $skip = false;
+ if ( $wgUseMemCached ) {
+ $mcKey = "$wgDBname:proxy:ip:$ip";
+ $mcValue = $wgMemc->get( $mcKey );
+ if ( $mcValue ) {
+ $skip = true;
+ }
+ }
+
+ # Fork the processes
+ if ( !$skip ) {
+ $title = Title::makeTitle( NS_SPECIAL, 'Blockme' );
+ $iphash = md5( $ip . $wgProxyKey );
+ $url = $title->getFullURL( 'ip='.$iphash );
+
+ foreach ( $wgProxyPorts as $port ) {
+ $params = implode( ' ', array(
+ escapeshellarg( $wgProxyScriptPath ),
+ escapeshellarg( $ip ),
+ escapeshellarg( $port ),
+ escapeshellarg( $url )
+ ));
+ exec( "php $params &>/dev/null &" );
+ }
+ # 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 ) {
+ $parts = explode( '/', $range, 2 );
+ if ( count( $parts ) != 2 ) {
+ return array( false, false );
+ }
+ $network = wfIP2Unsigned( $parts[0] );
+ if ( $network !== false && is_numeric( $parts[1] ) && $parts[1] >= 0 && $parts[1] <= 32 ) {
+ $bits = $parts[1];
+ } else {
+ $network = false;
+ $bits = false;
+ }
+ return array( $network, $bits );
+}
+
+/**
+ * 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 ) );
+ }
+
+ 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;
+}
+
+
+
+
?>
dépôts / lhc / web / wiklou.git / blobdiff