3 * This does the initial set up for a web request.
5 * It does some security checks, loads autoloaders, constants, and
6 * global functions, starts the profiler, loads the configuration,
7 * and loads Setup.php, which loads extensions using the extension
8 * registration system and initializes the application's global state.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License along
21 * with this program; if not, write to the Free Software Foundation, Inc.,
22 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
23 * http://www.gnu.org/copyleft/gpl.html
28 if ( ini_get( 'mbstring.func_overload' ) ) {
29 die( 'MediaWiki does not support installations where mbstring.func_overload is non-zero.' );
32 # T17461: Make IE8 turn off content sniffing. Everybody else should ignore this
33 # We're adding it here so that it's *always* set, even for alternate entry
34 # points and when $wgOut gets disabled or overridden.
35 header( 'X-Content-Type-Options: nosniff' );
37 # Valid web server entry point, enable includes.
38 # Please don't move this line to includes/Defines.php. This line essentially
39 # defines a valid entry point. If you put it in includes/Defines.php, then
40 # any script that includes it becomes an entry point, thereby defeating
42 define( 'MEDIAWIKI', true );
44 # Full path to the installation directory.
45 $IP = getenv( 'MW_INSTALL_PATH' );
46 if ( $IP === false ) {
47 $IP = dirname( __DIR__
);
50 // If no LocalSettings file exists, try to display an error page
51 // (use a callback because it depends on TemplateParser)
52 if ( !defined( 'MW_CONFIG_CALLBACK' ) ) {
53 if ( !defined( 'MW_CONFIG_FILE' ) ) {
54 define( 'MW_CONFIG_FILE', "$IP/LocalSettings.php" );
56 if ( !is_readable( MW_CONFIG_FILE
) ) {
57 function wfWebStartNoLocalSettings() {
58 # LocalSettings.php is the per-site customization file. If it does not exist
59 # the wiki installer needs to be launched or the generated file uploaded to
60 # the root wiki directory. Give a hint, if it is not readable by the server.
62 require_once "$IP/includes/NoLocalSettings.php";
65 define( 'MW_CONFIG_CALLBACK', 'wfWebStartNoLocalSettings' );
69 // Custom setup for WebStart entry point
70 if ( !defined( 'MW_SETUP_CALLBACK' ) ) {
71 function wfWebStartSetup() {
72 // Initialise output buffering
73 // Check for previously set up buffers, to avoid a mix of gzip and non-gzip output.
74 if ( ob_get_level() == 0 ) {
75 ob_start( 'MediaWiki\\OutputHandler::handle' );
78 define( 'MW_SETUP_CALLBACK', 'wfWebStartSetup' );
81 require_once "$IP/includes/Setup.php";
83 # Multiple DBs or commits might be used; keep the request as transactional as possible
84 if ( isset( $_SERVER['REQUEST_METHOD'] ) && $_SERVER['REQUEST_METHOD'] === 'POST' ) {
85 ignore_user_abort( true );
88 if ( !defined( 'MW_API' ) &&
89 RequestContext
::getMain()->getRequest()->getHeader( 'Promise-Non-Write-API-Action' )
91 header( 'Cache-Control: no-cache' );
92 header( 'Content-Type: text/html; charset=utf-8' );
93 HttpStatus
::header( 400 );
94 $error = wfMessage( 'nonwrite-api-promise-error' )->escaped();
98 <head><meta charset="UTF-8" /></head>
105 header( 'Content-Length: ' . strlen( $content ) );