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( 'Hooks.php' );
  62 require_once( 'Namespace.php' );
  63 require_once( 'RecentChange.php' );
  64 require_once( 'User.php' );
  65 require_once( 'Skin.php' );
  66 require_once( 'OutputPage.php' );
  67 require_once( 'LinkCache.php' );
  68 require_once( 'Title.php' );
  69 require_once( 'Article.php' );
  70 require_once( 'MagicWord.php' );
  71 require_once( 'Block.php' );
  72 require_once( 'MessageCache.php' );
  73 require_once( 'BlockCache.php' );
  74 require_once( 'Parser.php' );
  75 require_once( 'ParserXML.php' );
  76 require_once( 'ParserCache.php' );
  77 require_once( 'WebRequest.php' );
  78 require_once( 'LoadBalancer.php' );
  79 require_once( 'HistoryBlob.php' );
  80
  81 $wgRequest = new WebRequest();
  82
  83 wfProfileOut( $fname.'-includes' );
  84 wfProfileIn( $fname.'-misc1' );
  85 global $wgUser, $wgLang, $wgContLang, $wgOut, $wgTitle;
  86 global $wgLangClass, $wgContLangClass;
  87 global $wgArticle, $wgDeferredUpdateList, $wgLinkCache;
  88 global $wgMemc, $wgMagicWords, $wgMwRedir, $wgDebugLogFile;
  89 global $wgMessageCache, $wgUseMemCached, $wgUseDatabaseMessages;
  90 global $wgMsgCacheExpiry, $wgCommandLineMode;
  91 global $wgBlockCache, $wgParserCache, $wgParser, $wgMsgParserOptions;
  92 global $wgLoadBalancer, $wgDBservers, $wgDebugDumpSql;
  93 global $wgDBserver, $wgDBuser, $wgDBpassword, $wgDBname, $wgDBtype;
  94 global $wgUseOldExistenceCheck, $wgEnablePersistentLC;
  95
  96 global $wgFullyInitialised;
  97
  98 # Useful debug output
  99 if ( $wgCommandLineMode ) {
 100         # wfDebug( '"' . implode( '"  "', $argv ) . '"' );
 101 } elseif ( function_exists( 'getallheaders' ) ) {
 102         wfDebug( "\nStart request\n" );
 103         wfDebug( $_SERVER['REQUEST_METHOD'] . ' ' . $_SERVER['REQUEST_URI'] . "\n" );
 104         $headers = getallheaders();
 105         foreach ($headers as $name => $value) {
 106                 wfDebug( "$name: $value\n" );
 107         }
 108         wfDebug( "\n" );
 109 } else {
 110         wfDebug( $_SERVER['REQUEST_METHOD'] . ' ' . $_SERVER['REQUEST_URI'] . "\n" );
 111 }
 112
 113 # Disable linkscc except if the old existence check method is enabled
 114 if (!$wgUseOldExistenceCheck) {
 115         $wgEnablePersistentLC = false;
 116 }
 117
 118 wfProfileOut( $fname.'-misc1' );
 119 wfProfileIn( $fname.'-memcached' );
 120
 121 # FakeMemCachedClient imitates the API of memcached-client v. 0.1.2.
 122 # It acts as a memcached server with no RAM, that is, all objects are
 123 # cleared the moment they are set. All set operations succeed and all
 124 # get operations return null.
 125
 126 if( $wgUseMemCached ) {
 127         # Set up Memcached
 128         #
 129         require_once( 'memcached-client.php' );
 130
 131         /**
 132          *
 133          * @package MediaWiki
 134          */
 135         class MemCachedClientforWiki extends memcached {
 136                 function _debugprint( $text ) {
 137                         wfDebug( "memcached: $text\n" );
 138                 }
 139         }
 140
 141         $wgMemc = new MemCachedClientforWiki( array('persistant' => true) );
 142         $wgMemc->set_servers( $wgMemCachedServers );
 143         $wgMemc->set_debug( $wgMemCachedDebug );
 144
 145         $messageMemc = &$wgMemc;
 146 } elseif ( $wgUseTurckShm ) {
 147         # Turck shared memory
 148         #
 149         require_once( 'ObjectCache.php' );
 150         $wgMemc = new TurckBagOStuff;
 151         $messageMemc = &$wgMemc;
 152 } else {
 153         /**
 154          * No shared memory
 155          * @package MediaWiki
 156          */
 157         class FakeMemCachedClient {
 158                 function add ($key, $val, $exp = 0) { return true; }
 159                 function decr ($key, $amt=1) { return null; }
 160                 function delete ($key, $time = 0) { return false; }
 161                 function disconnect_all () { }
 162                 function enable_compress ($enable) { }
 163                 function forget_dead_hosts () { }
 164                 function get ($key) { return null; }
 165                 function get_multi ($keys) { return array_pad(array(), count($keys), null); }
 166                 function incr ($key, $amt=1) { return null; }
 167                 function replace ($key, $value, $exp=0) { return false; }
 168                 function run_command ($sock, $cmd) { return null; }
 169                 function set ($key, $value, $exp=0){ return true; }
 170                 function set_compress_threshold ($thresh){ }
 171                 function set_debug ($dbg) { }
 172                 function set_servers ($list) { }
 173         }
 174         $wgMemc = new FakeMemCachedClient();
 175
 176         # Give the message cache a separate cache in the DB.
 177         # This is a speedup over separately querying every message used
 178         require_once( 'ObjectCache.php' );
 179         $messageMemc = new MediaWikiBagOStuff('objectcache');
 180 }
 181
 182 wfProfileOut( $fname.'-memcached' );
 183 wfProfileIn( $fname.'-SetupSession' );
 184
 185 if( !$wgCommandLineMode && ( isset( $_COOKIE[ini_get('session.name')] ) || isset( $_COOKIE[$wgDBname.'Token'] ) ) ) {
 186         User::SetupSession();
 187         $wgSessionStarted = true;
 188 } else {
 189         $wgSessionStarted = false;
 190 }
 191
 192 wfProfileOut( $fname.'-SetupSession' );
 193 wfProfileIn( $fname.'-database' );
 194
 195 if ( !$wgDBservers ) {
 196         $wgDBservers = array(array(
 197                 'host' => $wgDBserver,
 198                 'user' => $wgDBuser,
 199                 'password' => $wgDBpassword,
 200                 'dbname' => $wgDBname,
 201                 'type' => $wgDBtype,
 202                 'load' => 1,
 203                 'flags' => ($wgDebugDumpSql ? DBO_DEBUG : 0) | DBO_DEFAULT
 204         ));
 205 }
 206 $wgLoadBalancer = LoadBalancer::newFromParams( $wgDBservers );
 207 $wgLoadBalancer->loadMasterPos();
 208
 209 wfProfileOut( $fname.'-database' );
 210 wfProfileIn( $fname.'-language1' );
 211
 212 require_once( "$IP/languages/Language.php" );
 213
 214 wfProfileOut( $fname.'-language1' );
 215 wfProfileIn( $fname.'-User' );
 216
 217 # Skin setup functions
 218 # Entries can be added to this variable during the inclusion
 219 # of the extension file. Skins can then perform any necessary initialisation.
 220 foreach ( $wgSkinExtensionFunctions as $func ) {
 221         $func();
 222 }
 223
 224 if( !is_object( $wgAuth ) ) {
 225         require_once( 'AuthPlugin.php' );
 226         $wgAuth = new AuthPlugin();
 227 }
 228
 229 if( $wgCommandLineMode ) {
 230         # Used for some maintenance scripts; user session cookies can screw things up
 231         # when the database is in an in-between state.
 232         $wgUser = new User();
 233 } else {
 234         $wgUser = User::loadFromSession();
 235 }
 236
 237 wfProfileOut( $fname.'-User' );
 238 wfProfileIn( $fname.'-language2' );
 239
 240 function setupLangObj(&$langclass) {
 241         global $wgUseLatin1, $IP;
 242
 243         if( ! class_exists( $langclass ) ) {
 244                 # Default to English/UTF-8, or for non-UTF-8, to latin-1
 245                 $baseclass = 'LanguageUtf8';
 246                 if( $wgUseLatin1 )
 247                         $baseclass = 'LanguageLatin1';
 248                 require_once( "$IP/languages/$baseclass.php" );
 249                 $lc = strtolower(substr($langclass, 8));
 250                 $snip = "
 251                         class $langclass extends $baseclass {
 252                                 function getVariants() {
 253                                         return array(\"$lc\");
 254                                 }
 255
 256                         }";
 257
 258                 eval($snip);
 259         }
 260
 261         $lang = new $langclass();
 262
 263         return $lang;
 264 }
 265
 266 # $wgLanguageCode may be changed later to fit with user preference.
 267 # The content language will remain fixed as per the configuration,
 268 # so let's keep it.
 269 $wgContLanguageCode = $wgLanguageCode;
 270 $wgContLangClass = 'Language' . str_replace( '-', '_', ucfirst( $wgContLanguageCode ) );
 271
 272 $wgContLang = setupLangObj( $wgContLangClass );
 273
 274 // set default user option from content language
 275 if( !$wgUser->mDataLoaded ) {
 276         $wgUser->loadDefaultFromLanguage();
 277 }
 278
 279 // wgLanguageCode now specifically means the UI language
 280 $wgLanguageCode = $wgUser->getOption('language');
 281 if( empty( $wgLanguageCode ) ) {
 282         # Quick hack for upgrades where this will be blank,
 283         # and it's not handled right. Set to default.
 284         $wgLanguageCode = $wgContLanguageCode;
 285 }
 286
 287 $wgLangClass = 'Language'. str_replace( '-', '_', ucfirst( $wgLanguageCode ) );
 288
 289 if( $wgLangClass == $wgContLangClass ) {
 290         $wgLang = &$wgContLang;
 291 } else {
 292         wfSuppressWarnings();
 293         include_once("$IP/languages/$wgLangClass.php");
 294         wfRestoreWarnings();
 295
 296         $wgLang = setupLangObj( $wgLangClass );
 297 }
 298
 299 wfProfileOut( $fname.'-language' );
 300 wfProfileIn( $fname.'-MessageCache' );
 301
 302 $wgMessageCache = new MessageCache;
 303 $wgMessageCache->initialise( $messageMemc, $wgUseDatabaseMessages, $wgMsgCacheExpiry, $wgDBname);
 304
 305 wfProfileOut( $fname.'-MessageCache' );
 306
 307 #
 308 # I guess the warning about UI switching might still apply...
 309 #
 310 # FIXME: THE ABOVE MIGHT BREAK NAMESPACES, VARIABLES,
 311 # SEARCH INDEX UPDATES, AND MANY MANY THINGS.
 312 # DO NOT USE THIS MODE EXCEPT FOR TESTING RIGHT NOW.
 313 #
 314 # To disable it, the easiest thing could be to uncomment the
 315 # following; they should effectively disable the UI switch functionality
 316 #
 317 # $wgLangClass = $wgContLangClass;
 318 # $wgLanguageCode = $wgContLanguageCode;
 319 # $wgLang = $wgContLang;
 320 #
 321 # TODO: Need to change reference to $wgLang to $wgContLang at proper
 322 #       places, including namespaces, dates in signatures, magic words,
 323 #       and links
 324 #
 325 # TODO: Need to look at the issue of input/output encoding
 326 #
 327
 328
 329 wfProfileIn( $fname.'-OutputPage' );
 330
 331 $wgOut = new OutputPage();
 332 wfDebug( "\n\n" );
 333
 334 wfProfileOut( $fname.'-OutputPage' );
 335 wfProfileIn( $fname.'-DateFormatter' );
 336
 337 if ( $wgUseDynamicDates ) {
 338         require_once( 'DateFormatter.php' );
 339         global $wgDateFormatter;
 340         $wgDateFormatter = new DateFormatter;
 341 }
 342
 343 wfProfileOut( $fname.'-DateFormatter' );
 344 wfProfileIn( $fname.'-BlockCache' );
 345
 346 $wgBlockCache = new BlockCache( true );
 347
 348 wfProfileOut( $fname.'-BlockCache' );
 349 wfProfileIn( $fname.'-misc2' );
 350
 351 $wgDeferredUpdateList = array();
 352 $wgLinkCache = new LinkCache();
 353 $wgMagicWords = array();
 354 $wgMwRedir =& MagicWord::get( MAG_REDIRECT );
 355 $wgParserCache = new ParserCache( $messageMemc );
 356
 357 if ( $wgUseXMLparser ) $wgParser = new ParserXML();
 358 else $wgParser = new Parser();
 359 $wgOut->setParserOptions( ParserOptions::newFromUser( $wgUser ) );
 360 $wgMsgParserOptions = ParserOptions::newFromUser($wgUser);
 361 wfSeedRandom();
 362
 363 # Placeholders in case of DB error
 364 $wgTitle = Title::makeTitle( NS_SPECIAL, 'Error' );
 365 $wgArticle = new Article($wgTitle);
 366
 367 wfProfileOut( $fname.'-misc2' );
 368 wfProfileIn( $fname.'-extensions' );
 369
 370 # Extension setup functions for extensions other than skins
 371 # Entries should be added to this variable during the inclusion
 372 # of the extension file. This allows the extension to perform
 373 # any necessary initialisation in the fully initialised environment
 374 foreach ( $wgExtensionFunctions as $func ) {
 375         $func();
 376 }
 377
 378 $wgFullyInitialised = true;
 379 wfProfileOut( $fname.'-extensions' );
 380 wfProfileOut( $fname );
 381
 382 }
 383 ?>