MediaWiki  master
WebStart.php
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1 <?php
36 # T17461: Make IE8 turn off content sniffing. Everybody else should ignore this
37 # We're adding it here so that it's *always* set, even for alternate entry
38 # points and when $wgOut gets disabled or overridden.
39 use MediaWiki\Settings\SettingsBuilder;
40 
41 header( 'X-Content-Type-Options: nosniff' );
42 
43 # Valid web server entry point, enable includes.
44 # Please don't move this line to includes/Defines.php. This line essentially
45 # defines a valid entry point. If you put it in includes/Defines.php, then
46 # any script that includes it becomes an entry point, thereby defeating
47 # its purpose.
48 define( 'MEDIAWIKI', true );
49 
54 function wfWebStartNoLocalSettings( SettingsBuilder $settings ) {
55  # LocalSettings.php is the per-site customization file. If it does not exist
56  # the wiki installer needs to be launched or the generated file uploaded to
57  # the root wiki directory. Give a hint, if it is not readable by the server.
58  require_once __DIR__ . '/NoLocalSettings.php';
59  die();
60 }
61 
62 require_once __DIR__ . '/BootstrapHelperFunctions.php';
63 
64 // If no LocalSettings file exists, try to display an error page
65 // (use a callback because it depends on TemplateParser)
66 if ( !defined( 'MW_CONFIG_CALLBACK' ) ) {
67  wfDetectLocalSettingsFile();
68  if ( !is_readable( MW_CONFIG_FILE ) ) {
69  define( 'MW_CONFIG_CALLBACK', 'wfWebStartNoLocalSettings' );
70  }
71 }
72 
73 function wfWebStartSetup( SettingsBuilder $settings ) {
74  // Initialize the default MediaWiki output buffering if no buffer is already active.
75  // This avoids clashes with existing buffers in order to avoid problems,
76  // like mixing gzip and non-gzip output.
77  if ( ob_get_level() == 0 ) {
78  // During HTTP requests, MediaWiki normally buffers the response body in a string
79  // within OutputPage and prints it when ready. PHP buffers provide protection against
80  // premature sending of HTTP headers due to output from PHP warnings and notices.
81  // They also can be used to implement gzip support in PHP without the webserver knowing
82  // which requests yield HTML and which yield large files that can be streamed.
83  ob_start( 'MediaWiki\\OutputHandler::handle' );
84  }
85 }
86 
87 // Custom setup for WebStart entry point
88 if ( !defined( 'MW_SETUP_CALLBACK' ) ) {
89  define( 'MW_SETUP_CALLBACK', 'wfWebStartSetup' );
90 }
91 
92 require_once __DIR__ . '/Setup.php';
93 
94 # Multiple DBs or commits might be used; keep the request as transactional as possible
95 if ( isset( $_SERVER['REQUEST_METHOD'] ) && $_SERVER['REQUEST_METHOD'] === 'POST' ) {
96  ignore_user_abort( true );
97 }
98 
99 if ( !defined( 'MW_API' ) && !defined( 'MW_REST_API' ) &&
100  RequestContext::getMain()->getRequest()->getHeader( 'Promise-Non-Write-API-Action' )
101 ) {
102  header( 'Cache-Control: no-cache' );
103  header( 'Content-Type: text/html; charset=utf-8' );
104  HttpStatus::header( 400 );
105  $errorHtml = wfMessage( 'nonwrite-api-promise-error' )
106  ->useDatabase( false )
107  ->inContentLanguage()
108  ->escaped();
109  $content = <<<HTML
110 <!DOCTYPE html>
111 <html>
112 <head><meta charset="UTF-8" /></head>
113 <body>
114 $errorHtml
115 </body>
116 </html>
117 
118 HTML;
119  header( 'Content-Length: ' . strlen( $content ) );
120  echo $content;
121  die();
122 }
wfDetectLocalSettingsFile
wfDetectLocalSettingsFile(?string $installationPath=null)
Decide and remember where to load LocalSettings from.
Definition: BootstrapHelperFunctions.php:30
wfMessage
wfMessage( $key,... $params)
This is the function for getting translated interface messages.
Definition: GlobalFunctions.php:893
wfWebStartSetup
if(!defined( 'MW_CONFIG_CALLBACK')) wfWebStartSetup(SettingsBuilder $settings)
Definition: WebStart.php:73
wfWebStartNoLocalSettings
wfWebStartNoLocalSettings(SettingsBuilder $settings)
Definition: WebStart.php:54
HttpStatus\header
static header( $code)
Output an HTTP status code header.
Definition: HttpStatus.php:96
MediaWiki\Settings\SettingsBuilder
Builder class for constructing a Config object from a set of sources during bootstrap.
Definition: SettingsBuilder.php:54
RequestContext\getMain
static getMain()
Get the RequestContext object associated with the main request.
Definition: RequestContext.php:546
$content
$content
Definition: router.php:76