MediaWiki  1.30.0
WebStart.php
Go to the documentation of this file.
1 <?php
28 if ( ini_get( 'mbstring.func_overload' ) ) {
29  die( 'MediaWiki does not support installations where mbstring.func_overload is non-zero.' );
30 }
31 
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' );
36 
42 $wgRequestTime = $_SERVER['REQUEST_TIME_FLOAT'];
43 
44 unset( $IP );
45 
46 # Valid web server entry point, enable includes.
47 # Please don't move this line to includes/Defines.php. This line essentially
48 # defines a valid entry point. If you put it in includes/Defines.php, then
49 # any script that includes it becomes an entry point, thereby defeating
50 # its purpose.
51 define( 'MEDIAWIKI', true );
52 
53 # Full path to working directory.
54 # Makes it possible to for example to have effective exclude path in apc.
55 # __DIR__ breaks symlinked includes, but realpath() returns false
56 # if we don't have permissions on parent directories.
57 $IP = getenv( 'MW_INSTALL_PATH' );
58 if ( $IP === false ) {
59  $IP = realpath( '.' ) ?: dirname( __DIR__ );
60 }
61 
62 require_once "$IP/includes/PreConfigSetup.php";
63 
64 # Assert that composer dependencies were successfully loaded
65 # Purposely no leading \ due to it breaking HHVM RepoAuthorative mode
66 # PHP works fine with both versions
67 # See https://github.com/facebook/hhvm/issues/5833
68 if ( !interface_exists( 'Psr\Log\LoggerInterface' ) ) {
69  $message = (
70  'MediaWiki requires the <a href="https://github.com/php-fig/log">PSR-3 logging ' .
71  "library</a> to be present. This library is not embedded directly in MediaWiki's " .
72  "git repository and must be installed separately by the end user.\n\n" .
73  'Please see <a href="https://www.mediawiki.org/wiki/Download_from_Git' .
74  '#Fetch_external_libraries">mediawiki.org</a> for help on installing ' .
75  'the required components.'
76  );
77  echo $message;
78  trigger_error( $message, E_USER_ERROR );
79  die( 1 );
80 }
81 
82 # Install a header callback
83 MediaWiki\HeaderCallback::register();
84 
85 if ( defined( 'MW_CONFIG_CALLBACK' ) ) {
86  # Use a callback function to configure MediaWiki
87  call_user_func( MW_CONFIG_CALLBACK );
88 } else {
89  if ( !defined( 'MW_CONFIG_FILE' ) ) {
90  define( 'MW_CONFIG_FILE', "$IP/LocalSettings.php" );
91  }
92 
93  # LocalSettings.php is the per site customization file. If it does not exist
94  # the wiki installer needs to be launched or the generated file uploaded to
95  # the root wiki directory. Give a hint, if it is not readable by the server.
96  if ( !is_readable( MW_CONFIG_FILE ) ) {
97  require_once "$IP/includes/NoLocalSettings.php";
98  die();
99  }
100 
101  # Include site settings. $IP may be changed (hopefully before the AutoLoader is invoked)
102  require_once MW_CONFIG_FILE;
103 }
104 
105 # Initialise output buffering
106 # Check that there is no previous output or previously set up buffers, because
107 # that would cause us to potentially mix gzip and non-gzip output, creating a
108 # big mess.
109 if ( ob_get_level() == 0 ) {
110  require_once "$IP/includes/OutputHandler.php";
111  ob_start( 'wfOutputHandler' );
112 }
113 
114 require_once "$IP/includes/Setup.php";
115 
116 # Multiple DBs or commits might be used; keep the request as transactional as possible
117 if ( isset( $_SERVER['REQUEST_METHOD'] ) && $_SERVER['REQUEST_METHOD'] === 'POST' ) {
118  ignore_user_abort( true );
119 }
120 
121 if ( !defined( 'MW_API' ) &&
122  RequestContext::getMain()->getRequest()->getHeader( 'Promise-Non-Write-API-Action' )
123 ) {
124  header( 'Cache-Control: no-cache' );
125  header( 'Content-Type: text/html; charset=utf-8' );
126  HttpStatus::header( 400 );
127  $error = wfMessage( 'nonwrite-api-promise-error' )->escaped();
128  $content = <<<EOT
129 <!DOCTYPE html>
130 <html>
131 <head><meta charset="UTF-8" /></head>
132 <body>
133 $error
134 </body>
135 </html>
136 
137 EOT;
138  header( 'Content-Length: ' . strlen( $content ) );
139  echo $content;
140  die();
141 }
MediaWiki\HeaderCallback\register
static register()
Register a callback to be called when headers are sent.
Definition: HeaderCallback.php:14
php
injection txt This is an overview of how MediaWiki makes use of dependency injection The design described here grew from the discussion of RFC T384 The term dependency this means that anything an object needs to operate should be injected from the the object itself should only know narrow no concrete implementation of the logic it relies on The requirement to inject everything typically results in an architecture that based on two main types of and essentially stateless service objects that use other service objects to operate on the value objects As of the beginning MediaWiki is only starting to use the DI approach Much of the code still relies on global state or direct resulting in a highly cyclical dependency which acts as the top level factory for services in MediaWiki which can be used to gain access to default instances of various services MediaWikiServices however also allows new services to be defined and default services to be redefined Services are defined or redefined by providing a callback the instantiator that will return a new instance of the service When it will create an instance of MediaWikiServices and populate it with the services defined in the files listed by thereby bootstrapping the DI framework Per $wgServiceWiringFiles lists includes ServiceWiring php
Definition: injection.txt:35
MW_CONFIG_CALLBACK
const MW_CONFIG_CALLBACK
Definition: install.php:26
RequestContext\getMain
static getMain()
Static methods.
Definition: RequestContext.php:470
HttpStatus\header
static header( $code)
Output an HTTP status code header.
Definition: HttpStatus.php:96
$wgRequestTime
float $wgRequestTime
Request start time as fractional seconds since epoch.
Definition: WebStart.php:42
wfMessage
either a unescaped string or a HtmlArmor object after in associative array form externallinks including delete and has completed for all link tables whether this was an auto creation default is conds Array Extra conditions for the No matching items in log is displayed if loglist is empty msgKey Array If you want a nice box with a set this to the key of the message First element is the message additional optional elements are parameters for the key that are processed with wfMessage() -> params() ->parseAsBlock() - offset Set to overwrite offset parameter in $wgRequest set to '' to unset offset - wrap String Wrap the message in html(usually something like "&lt
$IP
$IP
Definition: WebStart.php:57