Fix return type documentation

[lhc/web/wiklou.git] / includes / WebStart.php

diff --git a/includes/WebStart.php b/includes/WebStart.php
index fc6d969..770e81f 100644 (file)
--- a/includes/WebStart.php
+++ b/includes/WebStart.php
@@ -1,8 +1,46 @@
 <?php
+/**
+ * This does the initial setup for a web request.
+ * It does some security checks, starts the profiler and loads the
+ * configuration, and optionally loads Setup.php depending on whether
+ * MW_NO_SETUP is defined.
+ *
+ * @file
+ */
 
-# This does the initial setup for a web request. It does some security checks, 
-# starts the profiler and loads the configuration, and optionally loads 
-# Setup.php depending on whether MW_NO_SETUP is defined.
+# Protect against register_globals
+# This must be done before any globals are set by the code
+if ( ini_get( 'register_globals' ) ) {
+       if ( isset( $_REQUEST['GLOBALS'] ) ) {
+               die( '<a href="http://www.hardened-php.net/globals-problem">$GLOBALS overwrite vulnerability</a>');
+       }
+       $verboten = array(
+               'GLOBALS',
+               '_SERVER',
+               'HTTP_SERVER_VARS',
+               '_GET',
+               'HTTP_GET_VARS',
+               '_POST',
+               'HTTP_POST_VARS',
+               '_COOKIE',
+               'HTTP_COOKIE_VARS',
+               '_FILES',
+               'HTTP_POST_FILES',
+               '_ENV',
+               'HTTP_ENV_VARS',
+               '_REQUEST',
+               '_SESSION',
+               'HTTP_SESSION_VARS'
+       );
+       foreach ( $_REQUEST as $name => $value ) {
+               if( in_array( $name, $verboten ) ) {
+                       header( "HTTP/1.x 500 Internal Server Error" );
+                       echo "register_globals security paranoia: trying to overwrite superglobals, aborting.";
+                       die( -1 );
+               }
+               unset( $GLOBALS[$name] );
+       }
+}
 
 $wgRequestTime = microtime(true);
 # getrusage() does not exist on the Microsoft Windows platforms, catching this
@@ -12,11 +50,6 @@ if ( function_exists ( 'getrusage' ) ) {
        $wgRUstart = array();
 }
 unset( $IP );
-@ini_set( 'allow_url_fopen', 0 ); # For security
-
-if ( isset( $_REQUEST['GLOBALS'] ) ) {
-       die( '<a href="http://www.hardened-php.net/index.76.html">$GLOBALS overwrite vulnerability</a>');
-}
 
 # Valid web server entry point, enable includes.
 # Please don't move this line to includes/Defines.php. This line essentially
@@ -25,28 +58,80 @@ if ( isset( $_REQUEST['GLOBALS'] ) ) {
 # its purpose.
 define( 'MEDIAWIKI', true );
 
+# Full path to working directory.
+# Makes it possible to for example to have effective exclude path in apc.
+# Also doesn't break installations using symlinked includes, like
+# dirname( __FILE__ ) would do.
+$IP = getenv( 'MW_INSTALL_PATH' );
+if ( $IP === false ) {
+       $IP = realpath( '.' );
+}
+
+
 # Start profiler
-require_once( './StartProfiler.php' );
+if( file_exists("$IP/StartProfiler.php") ) {
+       require_once( "$IP/StartProfiler.php" );
+} else {
+       require_once( "$IP/includes/ProfilerStub.php" );
+}
 wfProfileIn( 'WebStart.php-conf' );
 
 # Load up some global defines.
-require_once( './includes/Defines.php' );
+require_once( "$IP/includes/Defines.php" );
+
+# Check for PHP 5
+if ( !function_exists( 'version_compare' ) 
+       || version_compare( phpversion(), '5.0.0' ) < 0
+) {
+       define( 'MW_PHP4', '1' );
+       require( "$IP/includes/DefaultSettings.php" );
+       require( "$IP/includes/templates/PHP4.php" );
+       exit;
+}
+
+# Start the autoloader, so that extensions can derive classes from core files
+require_once( "$IP/includes/AutoLoader.php" );
+# Load default settings
+require_once( "$IP/includes/DefaultSettings.php" );
 
-# LocalSettings.php is the per site customization file. If it does not exit
-# the wiki installer need to be launched or the generated file moved from
-# ./config/ to ./
-if( !file_exists( './LocalSettings.php' ) ) {
-       $IP = '.';
-       require_once( './includes/DefaultSettings.php' ); # used for printing the version
-       require_once( './includes/templates/NoLocalSettings.php' );
-       die();
+if ( defined( 'MW_CONFIG_CALLBACK' ) ) {
+       # Use a callback function to configure MediaWiki
+       MWFunction::call( MW_CONFIG_CALLBACK );
+       
+} else {
+       if ( !defined('MW_CONFIG_FILE') )
+               define('MW_CONFIG_FILE', "$IP/LocalSettings.php");
+       
+       # LocalSettings.php is the per site customization file. If it does not exist
+       # the wiki installer needs to be launched or the generated file moved from
+       # ./config/ to ./
+       if( !file_exists( MW_CONFIG_FILE ) ) {
+               require_once( "$IP/includes/templates/NoLocalSettings.php" );
+               die();
+       }
+
+       # Include site settings. $IP may be changed (hopefully before the AutoLoader is invoked)
+       require_once( MW_CONFIG_FILE );
+}
+
+if ( $wgEnableSelenium ) {
+       require_once( "$IP/includes/SeleniumWebSettings.php" );
 }
 
-# Include this site setttings
-require_once( './LocalSettings.php' );
 wfProfileOut( 'WebStart.php-conf' );
 
+wfProfileIn( 'WebStart.php-ob_start' );
+# Initialise output buffering
+# Check that there is no previous output or previously set up buffers, because
+# that would cause us to potentially mix gzip and non-gzip output, creating a
+# big mess.
+if ( !defined( 'MW_NO_OUTPUT_BUFFER' ) && ob_get_level() == 0 ) {
+       require_once( "$IP/includes/OutputHandler.php" );
+       ob_start( 'wfOutputHandler' );
+}
+wfProfileOut( 'WebStart.php-ob_start' );
+
 if ( !defined( 'MW_NO_SETUP' ) ) {
-       require_once( './includes/Setup.php' );
+       require_once( "$IP/includes/Setup.php" );
 }
-?>
+