includes/Setup.php

   1 <?php
   2 /**
   3  * Include most things that's need to customize the site
   4  * @package MediaWiki
   5  */
   6
   7 /**
   8  * This file is not a valid entry point, perform no further processing unless
   9  * MEDIAWIKI is defined
  10  */
  11 if( defined( 'MEDIAWIKI' ) ) {
  12
  13 # The main wiki script and things like database
  14 # conversion and maintenance scripts all share a
  15 # common setup of including lots of classes and
  16 # setting up a few globals.
  17 #
  18
  19 global $wgProfiling, $wgProfileSampleRate, $wgIP, $wgUseSquid, $IP;
  20
  21 if( !isset( $wgProfiling ) )
  22         $wgProfiling = false;
  23
  24 if ( $wgProfiling and (0 == rand() % $wgProfileSampleRate ) ) {
  25         require_once( 'Profiling.php' );
  26 } else {
  27         function wfProfileIn( $fn = '' ) {}
  28         function wfProfileOut( $fn = '' ) {}
  29         function wfGetProfilingOutput( $s, $e ) {}
  30         function wfProfileClose() {}
  31 }
  32
  33 /* collect the originating ips */
  34 if( $wgUseSquid && isset( $_SERVER['HTTP_X_FORWARDED_FOR'] ) ) {
  35         # If the web server is behind a reverse proxy, we need to find
  36         # out where our requests are really coming from.
  37         $hopips = array_map( 'trim', explode( ',', $_SERVER['HTTP_X_FORWARDED_FOR'] ) );
  38
  39         while(in_array(trim(end($hopips)), $wgSquidServers)){
  40                 array_pop($hopips);
  41         }
  42         $wgIP = trim(end($hopips));
  43 } elseif( isset( $_SERVER['REMOTE_ADDR'] ) ) {
  44         $wgIP = $_SERVER['REMOTE_ADDR'];
  45 } else {
  46         # Running on CLI?
  47         $wgIP = '127.0.0.1';
  48 }
  49
  50 if ( $wgUseData ) {
  51         $wgExtraNamespaces[20] = 'Data' ;
  52         $wgExtraNamespaces[21] = 'Data_talk' ;
  53 }
  54
  55 $fname = 'Setup.php';
  56 wfProfileIn( $fname );
  57 global $wgUseDynamicDates;
  58 wfProfileIn( $fname.'-includes' );
  59
  60 require_once( 'GlobalFunctions.php' );
  61 require_once( 'Namespace.php' );
  62 require_once( 'RecentChange.php' );
  63 require_once( 'User.php' );
  64 require_once( 'Skin.php' );
  65 require_once( 'OutputPage.php' );
  66 require_once( 'LinkCache.php' );
  67 require_once( 'Title.php' );
  68 require_once( 'Article.php' );
  69 require_once( 'MagicWord.php' );
  70 require_once( 'Block.php' );
  71 require_once( 'MessageCache.php' );
  72 require_once( 'BlockCache.php' );
  73 require_once( 'Parser.php' );
  74 require_once( 'ParserXML.php' );
  75 require_once( 'ParserCache.php' );
  76 require_once( 'WebRequest.php' );
  77 require_once( 'LoadBalancer.php' );
  78 require_once( 'HistoryBlob.php' );
  79
  80 $wgRequest = new WebRequest();
  81
  82
  83
  84 wfProfileOut( $fname.'-includes' );
  85 wfProfileIn( $fname.'-misc1' );
  86 global $wgUser, $wgLang, $wgContLang, $wgOut, $wgTitle;
  87 global $wgLangClass, $wgContLangClass;
  88 global $wgArticle, $wgDeferredUpdateList, $wgLinkCache;
  89 global $wgMemc, $wgMagicWords, $wgMwRedir, $wgDebugLogFile;
  90 global $wgMessageCache, $wgUseMemCached, $wgUseDatabaseMessages;
  91 global $wgMsgCacheExpiry, $wgCommandLineMode;
  92 global $wgBlockCache, $wgParserCache, $wgParser, $wgMsgParserOptions;
  93 global $wgLoadBalancer, $wgDBservers, $wgDebugDumpSql;
  94 global $wgDBserver, $wgDBuser, $wgDBpassword, $wgDBname, $wgDBtype;
  95 global $wgUseOldExistenceCheck, $wgEnablePersistentLC;
  96
  97 global $wgFullyInitialised;
  98
  99 # Useful debug output
 100 if ( $wgCommandLineMode ) {
 101         # wfDebug( '"' . implode( '"  "', $argv ) . '"' );
 102 } elseif ( function_exists( 'getallheaders' ) ) {
 103         wfDebug( "\nStart request\n" );
 104         wfDebug( $_SERVER['REQUEST_METHOD'] . ' ' . $_SERVER['REQUEST_URI'] . "\n" );
 105         $headers = getallheaders();
 106         foreach ($headers as $name => $value) {
 107                 wfDebug( "$name: $value\n" );
 108         }
 109         wfDebug( "\n" );
 110 } else {
 111         wfDebug( $_SERVER['REQUEST_METHOD'] . ' ' . $_SERVER['REQUEST_URI'] . "\n" );
 112 }
 113
 114 # Disable linkscc except if the old existence check method is enabled
 115 if (!$wgUseOldExistenceCheck) {
 116         $wgEnablePersistentLC = false;
 117 }
 118
 119 wfProfileOut( $fname.'-misc1' );
 120 wfProfileIn( $fname.'-memcached' );
 121
 122 # FakeMemCachedClient imitates the API of memcached-client v. 0.1.2.
 123 # It acts as a memcached server with no RAM, that is, all objects are
 124 # cleared the moment they are set. All set operations succeed and all
 125 # get operations return null.
 126
 127 if( $wgUseMemCached ) {
 128         # Set up Memcached
 129         #
 130         require_once( 'memcached-client.php' );
 131
 132         /**
 133          *
 134          * @package MediaWiki
 135          */
 136         class MemCachedClientforWiki extends memcached {
 137                 function _debugprint( $text ) {
 138                         wfDebug( "memcached: $text\n" );
 139                 }
 140         }
 141
 142         $wgMemc = new MemCachedClientforWiki( array('persistant' => true) );
 143         $wgMemc->set_servers( $wgMemCachedServers );
 144         $wgMemc->set_debug( $wgMemCachedDebug );
 145
 146         $messageMemc = &$wgMemc;
 147 } elseif ( $wgUseTurckShm ) {
 148         # Turck shared memory
 149         #
 150         require_once( 'ObjectCache.php' );
 151         $wgMemc = new TurckBagOStuff;
 152         $messageMemc = &$wgMemc;
 153 } else {
 154         /**
 155          * No shared memory
 156          * @package MediaWiki
 157          */
 158         class FakeMemCachedClient {
 159                 function add ($key, $val, $exp = 0) { return true; }
 160                 function decr ($key, $amt=1) { return null; }
 161                 function delete ($key, $time = 0) { return false; }
 162                 function disconnect_all () { }
 163                 function enable_compress ($enable) { }
 164                 function forget_dead_hosts () { }
 165                 function get ($key) { return null; }
 166                 function get_multi ($keys) { return array_pad(array(), count($keys), null); }
 167                 function incr ($key, $amt=1) { return null; }
 168                 function replace ($key, $value, $exp=0) { return false; }
 169                 function run_command ($sock, $cmd) { return null; }
 170                 function set ($key, $value, $exp=0){ return true; }
 171                 function set_compress_threshold ($thresh){ }
 172                 function set_debug ($dbg) { }
 173                 function set_servers ($list) { }
 174         }
 175         $wgMemc = new FakeMemCachedClient();
 176
 177         # Give the message cache a separate cache in the DB.
 178         # This is a speedup over separately querying every message used
 179         require_once( 'ObjectCache.php' );
 180         $messageMemc = new MediaWikiBagOStuff('objectcache');
 181 }
 182
 183 wfProfileOut( $fname.'-memcached' );
 184 wfProfileIn( $fname.'-SetupSession' );
 185
 186 if( !$wgCommandLineMode && ( isset( $_COOKIE[ini_get('session.name')] ) || isset( $_COOKIE[$wgDBname.'Token'] ) ) ) {
 187         User::SetupSession();
 188         $wgSessionStarted = true;
 189 } else {
 190         $wgSessionStarted = false;
 191 }
 192
 193 wfProfileOut( $fname.'-SetupSession' );
 194 wfProfileIn( $fname.'-database' );
 195
 196 if ( !$wgDBservers ) {
 197         $wgDBservers = array(array(
 198                 'host' => $wgDBserver,
 199                 'user' => $wgDBuser,
 200                 'password' => $wgDBpassword,
 201                 'dbname' => $wgDBname,
 202                 'type' => $wgDBtype,
 203                 'load' => 1,
 204                 'flags' => ($wgDebugDumpSql ? DBO_DEBUG : 0) | DBO_DEFAULT
 205         ));
 206 }
 207 $wgLoadBalancer = LoadBalancer::newFromParams( $wgDBservers );
 208 $wgLoadBalancer->loadMasterPos();
 209
 210 wfProfileOut( $fname.'-database' );
 211 wfProfileIn( $fname.'-User' );
 212
 213 # Skin setup functions
 214 # Entries can be added to this variable during the inclusion
 215 # of the extension file. Skins can then perform any necessary initialisation.
 216 foreach ( $wgSkinExtensionFunctions as $func ) {
 217         $func();
 218 }
 219
 220 if( $wgCommandLineMode ) {
 221         # Used for some maintenance scripts; user session cookies can screw things up
 222         # when the database is in an in-between state.
 223         $wgUser = new User();
 224 } else {
 225         $wgUser = User::loadFromSession();
 226 }
 227
 228 wfProfileOut( $fname.'-User' );
 229 wfProfileIn( $fname.'-language' );
 230
 231 function setupLangObj(&$langclass, $langcode) {
 232         global $wgUseLatin1, $IP;
 233
 234
 235         if( ! class_exists( $langclass ) ) {
 236                 # Default to English/UTF-8
 237                 require_once( "$IP/languages/LanguageUtf8.php" );
 238                 $langclass = 'LanguageUtf8';
 239         }
 240
 241         $lang = new $langclass();
 242         if ( !is_object($lang) ) {
 243                 print "No language class ($wgLang)\N";
 244         }
 245
 246         if( $wgUseLatin1 ) {
 247                 # For non-UTF-8 latin-1 downconversion
 248                 require_once( "$IP/languages/LanguageLatin1.php" );
 249                 $xxx = new LanguageLatin1( $lang );
 250                 unset( $lang );
 251                 $lang = $xxx;
 252         }
 253         return $lang;
 254 }
 255
 256 require_once( "$IP/languages/Language.php" );
 257
 258 # $wgLanguageCode may be changed later to fit with user preference.
 259 # The content language will remain fixed as per the configuration,
 260 # so let's keep it.
 261 $wgContLanguageCode = $wgLanguageCode;
 262 $wgContLangClass = 'Language' . str_replace( '-', '_', ucfirst( $wgContLanguageCode ) );
 263
 264 $wgContLang = setupLangObj( $wgContLangClass, $wgContLangClass );
 265 $n = get_class($wgContLang);
 266
 267 // set default user option from content language
 268 if( !$wgUser->mDataLoaded ) {
 269         $wgUser->loadDefaultFromLanguage();
 270 }
 271
 272 // wgLanguageCode now specifically means the UI language
 273 $wgLanguageCode = $wgUser->getOption('language');
 274
 275 $wgLangClass = 'Language'. str_replace( '-', '_', ucfirst( $wgLanguageCode ) );
 276
 277 if( $wgLangClass == $wgContLangClass ) {
 278         $wgLang = &$wgContLang;
 279 } else {
 280         require_once("$IP/languages/$wgLangClass.php");
 281         $wgLang = setupLangObj( $wgLangClass, $wgLanguageCode );
 282 }
 283
 284
 285 wfProfileOut( $fname.'-language' );
 286 wfProfileIn( $fname.'-MessageCache' );
 287
 288 $wgMessageCache = new MessageCache;
 289 $wgMessageCache->initialise( $messageMemc, $wgUseDatabaseMessages, $wgMsgCacheExpiry, $wgDBname);
 290
 291 wfProfileOut( $fname.'-MessageCache' );
 292
 293 #
 294 # I guess the warning about UI switching might still apply...
 295 #
 296 # FIXME: THE ABOVE MIGHT BREAK NAMESPACES, VARIABLES,
 297 # SEARCH INDEX UPDATES, AND MANY MANY THINGS.
 298 # DO NOT USE THIS MODE EXCEPT FOR TESTING RIGHT NOW.
 299 #
 300 # To disable it, the easiest thing could be to uncomment the
 301 # following; they should effectively disable the UI switch functionality
 302 #
 303 # $wgLangClass = $wgContLangClass;
 304 # $wgLanguageCode = $wgContLanguageCode;
 305 # $wgLang = $wgContLang;
 306 #
 307 # TODO: Need to change reference to $wgLang to $wgContLang at proper
 308 #       places, including namespaces, dates in signatures, magic words,
 309 #       and links
 310 #
 311 # TODO: Need to look at the issue of input/output encoding
 312 #
 313
 314
 315 wfProfileIn( $fname.'-OutputPage' );
 316
 317 $wgOut = new OutputPage();
 318 wfDebug( "\n\n" );
 319
 320 wfProfileOut( $fname.'-OutputPage' );
 321 wfProfileIn( $fname.'-DateFormatter' );
 322
 323 if ( $wgUseDynamicDates ) {
 324         require_once( 'DateFormatter.php' );
 325         global $wgDateFormatter;
 326         $wgDateFormatter = new DateFormatter;
 327 }
 328
 329 wfProfileOut( $fname.'-DateFormatter' );
 330 wfProfileIn( $fname.'-BlockCache' );
 331
 332 $wgBlockCache = new BlockCache( true );
 333
 334 wfProfileOut( $fname.'-BlockCache' );
 335 wfProfileIn( $fname.'-misc2' );
 336
 337 $wgDeferredUpdateList = array();
 338 $wgLinkCache = new LinkCache();
 339 $wgMagicWords = array();
 340 $wgMwRedir =& MagicWord::get( MAG_REDIRECT );
 341 $wgParserCache = new ParserCache();
 342
 343 if ( $wgUseXMLparser ) $wgParser = new ParserXML();
 344 else $wgParser = new Parser();
 345 $wgOut->setParserOptions( ParserOptions::newFromUser( $wgUser ) );
 346 $wgMsgParserOptions = ParserOptions::newFromUser($wgUser);
 347 wfSeedRandom();
 348
 349 # Placeholders in case of DB error
 350 $wgTitle = Title::newFromText( wfMsgForContent( 'badtitle' ) );
 351 $wgArticle = new Article($wgTitle);
 352
 353 wfProfileOut( $fname.'-misc2' );
 354 wfProfileIn( $fname.'-extensions' );
 355
 356 # Extension setup functions for extensions other than skins
 357 # Entries should be added to this variable during the inclusion
 358 # of the extension file. This allows the extension to perform
 359 # any necessary initialisation in the fully initialised environment
 360 foreach ( $wgExtensionFunctions as $func ) {
 361         $func();
 362 }
 363
 364 $wgFullyInitialised = true;
 365 wfProfileOut( $fname.'-extensions' );
 366 wfProfileOut( $fname );
 367
 368 }
 369 ?>