3 * This does the initial setup for a web request.
4 * It does some security checks, starts the profiler and loads the
5 * configuration, and optionally loads Setup.php depending on whether
6 * MW_NO_SETUP is defined.
11 # Protect against register_globals
12 # This must be done before any globals are set by the code
13 if ( ini_get( 'register_globals' ) ) {
14 if ( isset( $_REQUEST['GLOBALS'] ) ) {
15 die( '<a href="http://www.hardened-php.net/globals-problem">$GLOBALS overwrite vulnerability</a>');
35 foreach ( $_REQUEST as $name => $value ) {
36 if( in_array( $name, $verboten ) ) {
37 header( "HTTP/1.x 500 Internal Server Error" );
38 echo "register_globals security paranoia: trying to overwrite superglobals, aborting.";
41 unset( $GLOBALS[$name] );
45 $wgRequestTime = microtime(true);
46 # getrusage() does not exist on the Microsoft Windows platforms, catching this
47 if ( function_exists ( 'getrusage' ) ) {
48 $wgRUstart = getrusage();
54 # Valid web server entry point, enable includes.
55 # Please don't move this line to includes/Defines.php. This line essentially
56 # defines a valid entry point. If you put it in includes/Defines.php, then
57 # any script that includes it becomes an entry point, thereby defeating
59 define( 'MEDIAWIKI', true );
61 # Full path to working directory.
62 # Makes it possible to for example to have effective exclude path in apc.
63 # Also doesn't break installations using symlinked includes, like
64 # dirname( __FILE__ ) would do.
65 $IP = getenv( 'MW_INSTALL_PATH' );
66 if ( $IP === false ) {
67 $IP = realpath( '.' );
72 if( file_exists("$IP/StartProfiler.php") ) {
73 require_once( "$IP/StartProfiler.php" );
75 require_once( "$IP/includes/ProfilerStub.php" );
77 wfProfileIn( 'WebStart.php-conf' );
79 # Load up some global defines.
80 require_once( "$IP/includes/Defines.php" );
83 if ( !function_exists( 'version_compare' )
84 ||
version_compare( phpversion(), '5.0.0' ) < 0
86 define( 'MW_PHP4', '1' );
87 require( "$IP/includes/DefaultSettings.php" );
88 require( "$IP/includes/templates/PHP4.php" );
92 # Start the autoloader, so that extensions can derive classes from core files
93 require_once( "$IP/includes/AutoLoader.php" );
95 if ( defined( 'MW_CONFIG_CALLBACK' ) ) {
96 # Use a callback function to configure MediaWiki
97 require_once( "$IP/includes/DefaultSettings.php" );
99 $callback = MW_CONFIG_CALLBACK
;
100 if ( strpos( $callback, '::' ) !== false ) {
101 $callback = explode( '::', $callback, 2);
103 call_user_func( $callback );
105 # LocalSettings.php is the per site customization file. If it does not exit
106 # the wiki installer need to be launched or the generated file moved from
108 if( !file_exists( "$IP/LocalSettings.php" ) ) {
109 require_once( "$IP/includes/DefaultSettings.php" ); # used for printing the version
110 require_once( "$IP/includes/templates/NoLocalSettings.php" );
114 # Include site settings. $IP may be changed (hopefully before the AutoLoader is invoked)
115 require_once( "$IP/LocalSettings.php" );
118 if ( $wgEnableSelenium ) {
119 require_once( "$IP/includes/SeleniumWebSettings.php" );
122 wfProfileOut( 'WebStart.php-conf' );
124 wfProfileIn( 'WebStart.php-ob_start' );
125 # Initialise output buffering
127 # Check that there is no previous output or previously set up buffers, because
128 # that would cause us to potentially mix gzip and non-gzip output, creating a
130 # In older versions of PHP ob_get_level() returns 0 if there is no buffering or
131 # previous output, in newer versions the default output buffer is always set up
132 # and ob_get_level() returns 1. In this case we check that the buffer is empty.
133 # FIXME: Check that this is the right way to handle this
134 if ( !defined( 'MW_NO_OUTPUT_BUFFER' ) && ( ob_get_level() == 0 ||
( ob_get_level() == 1 && ob_get_contents() === '' ) ) ) {
135 require_once( "$IP/includes/OutputHandler.php" );
136 ob_start( 'wfOutputHandler' );
138 wfProfileOut( 'WebStart.php-ob_start' );
140 if ( !defined( 'MW_NO_SETUP' ) ) {
141 require_once( "$IP/includes/Setup.php" );