summaryrefslogtreecommitdiff
path: root/includes/WebStart.php
blob: b51407184ed279bb6f5074c8b0a724c1a59bf9ea (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
<?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
 */

# 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/1.1 500 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
if ( function_exists ( 'getrusage' ) ) {
	$wgRUstart = getrusage();
} else {
	$wgRUstart = array();
}
unset( $IP );

# Valid web server entry point, enable includes.
# Please don't move this line to includes/Defines.php. This line essentially
# defines a valid entry point. If you put it in includes/Defines.php, then
# any script that includes it becomes an entry point, thereby defeating
# 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
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( "$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" );

if ( defined( 'MW_CONFIG_CALLBACK' ) ) {
	# Use a callback function to configure MediaWiki
	$callback = MW_CONFIG_CALLBACK;
	# PHP 5.1 doesn't support "class::method" for call_user_func, so split it
	if ( strpos( $callback, '::' ) !== false ) {
		$callback = explode( '::', $callback, 2);
	}
	call_user_func( $callback );
} else {
	if ( !defined('MW_CONFIG_FILE') )
		define('MW_CONFIG_FILE', "$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 uploaded to
	# the root wiki directory
	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" );
}

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( "$IP/includes/Setup.php" );
}