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
  84
  85 wfProfileOut( $fname.'-includes' );
  86 wfProfileIn( $fname.'-misc1' );
  87 global $wgUser, $wgLang, $wgContLang, $wgOut, $wgTitle;
  88 global $wgLangClass, $wgContLangClass;
  89 global $wgArticle, $wgDeferredUpdateList, $wgLinkCache;
  90 global $wgMemc, $wgMagicWords, $wgMwRedir, $wgDebugLogFile;
  91 global $wgMessageCache, $wgUseMemCached, $wgUseDatabaseMessages;
  92 global $wgMsgCacheExpiry, $wgCommandLineMode;
  93 global $wgBlockCache, $wgParserCache, $wgParser, $wgMsgParserOptions;
  94 global $wgLoadBalancer, $wgDBservers, $wgDebugDumpSql;
  95 global $wgDBserver, $wgDBuser, $wgDBpassword, $wgDBname, $wgDBtype;
  96 global $wgUseOldExistenceCheck, $wgEnablePersistentLC;
  97
  98 global $wgFullyInitialised;
  99
 100 # Useful debug output
 101 if ( $wgCommandLineMode ) {
 102         # wfDebug( '"' . implode( '"  "', $argv ) . '"' );
 103 } elseif ( function_exists( 'getallheaders' ) ) {
 104         wfDebug( "\nStart request\n" );
 105         wfDebug( $_SERVER['REQUEST_METHOD'] . ' ' . $_SERVER['REQUEST_URI'] . "\n" );
 106         $headers = getallheaders();
 107         foreach ($headers as $name => $value) {
 108                 wfDebug( "$name: $value\n" );
 109         }
 110         wfDebug( "\n" );
 111 } else {
 112         wfDebug( $_SERVER['REQUEST_METHOD'] . ' ' . $_SERVER['REQUEST_URI'] . "\n" );
 113 }
 114
 115 # Disable linkscc except if the old existence check method is enabled
 116 if (!$wgUseOldExistenceCheck) {
 117         $wgEnablePersistentLC = false;
 118 }
 119
 120 wfProfileOut( $fname.'-misc1' );
 121 wfProfileIn( $fname.'-memcached' );
 122
 123 # FakeMemCachedClient imitates the API of memcached-client v. 0.1.2.
 124 # It acts as a memcached server with no RAM, that is, all objects are
 125 # cleared the moment they are set. All set operations succeed and all
 126 # get operations return null.
 127
 128 if( $wgUseMemCached ) {
 129         # Set up Memcached
 130         #
 131         require_once( 'memcached-client.php' );
 132
 133         /**
 134          *
 135          * @package MediaWiki
 136          */
 137         class MemCachedClientforWiki extends memcached {
 138                 function _debugprint( $text ) {
 139                         wfDebug( "memcached: $text\n" );
 140                 }
 141         }
 142
 143         $wgMemc = new MemCachedClientforWiki( array('persistant' => true) );
 144         $wgMemc->set_servers( $wgMemCachedServers );
 145         $wgMemc->set_debug( $wgMemCachedDebug );
 146
 147         $messageMemc = &$wgMemc;
 148 } elseif ( $wgUseTurckShm ) {
 149         # Turck shared memory
 150         #
 151         require_once( 'ObjectCache.php' );
 152         $wgMemc = new TurckBagOStuff;
 153         $messageMemc = &$wgMemc;
 154 } else {
 155         /**
 156          * No shared memory
 157          * @package MediaWiki
 158          */
 159         class FakeMemCachedClient {
 160                 function add ($key, $val, $exp = 0) { return true; }
 161                 function decr ($key, $amt=1) { return null; }
 162                 function delete ($key, $time = 0) { return false; }
 163                 function disconnect_all () { }
 164                 function enable_compress ($enable) { }
 165                 function forget_dead_hosts () { }
 166                 function get ($key) { return null; }
 167                 function get_multi ($keys) { return array_pad(array(), count($keys), null); }
 168                 function incr ($key, $amt=1) { return null; }
 169                 function replace ($key, $value, $exp=0) { return false; }
 170                 function run_command ($sock, $cmd) { return null; }
 171                 function set ($key, $value, $exp=0){ return true; }
 172                 function set_compress_threshold ($thresh){ }
 173                 function set_debug ($dbg) { }
 174                 function set_servers ($list) { }
 175         }
 176         $wgMemc = new FakeMemCachedClient();
 177
 178         # Give the message cache a separate cache in the DB.
 179         # This is a speedup over separately querying every message used
 180         require_once( 'ObjectCache.php' );
 181         $messageMemc = new MediaWikiBagOStuff('objectcache');
 182 }
 183
 184 wfProfileOut( $fname.'-memcached' );
 185 wfProfileIn( $fname.'-SetupSession' );
 186
 187 if( !$wgCommandLineMode && ( isset( $_COOKIE[ini_get('session.name')] ) || isset( $_COOKIE[$wgDBname.'Token'] ) ) ) {
 188         User::SetupSession();
 189         $wgSessionStarted = true;
 190 } else {
 191         $wgSessionStarted = false;
 192 }
 193
 194 wfProfileOut( $fname.'-SetupSession' );
 195 wfProfileIn( $fname.'-database' );
 196
 197 if ( !$wgDBservers ) {
 198         $wgDBservers = array(array(
 199                 'host' => $wgDBserver,
 200                 'user' => $wgDBuser,
 201                 'password' => $wgDBpassword,
 202                 'dbname' => $wgDBname,
 203                 'type' => $wgDBtype,
 204                 'load' => 1,
 205                 'flags' => ($wgDebugDumpSql ? DBO_DEBUG : 0) | DBO_DEFAULT
 206         ));
 207 }
 208 $wgLoadBalancer = LoadBalancer::newFromParams( $wgDBservers );
 209 $wgLoadBalancer->loadMasterPos();
 210
 211 wfProfileOut( $fname.'-database' );
 212 wfProfileIn( $fname.'-language1' );
 213
 214 require_once( "$IP/languages/Language.php" );
 215
 216 wfProfileOut( $fname.'-language1' );
 217 wfProfileIn( $fname.'-User' );
 218
 219 # Skin setup functions
 220 # Entries can be added to this variable during the inclusion
 221 # of the extension file. Skins can then perform any necessary initialisation.
 222 foreach ( $wgSkinExtensionFunctions as $func ) {
 223         $func();
 224 }
 225
 226 if( !is_object( $wgAuth ) ) {
 227         require_once( 'AuthPlugin.php' );
 228         $wgAuth = new AuthPlugin();
 229 }
 230
 231 if( $wgCommandLineMode ) {
 232         # Used for some maintenance scripts; user session cookies can screw things up
 233         # when the database is in an in-between state.
 234         $wgUser = new User();
 235 } else {
 236         $wgUser = User::loadFromSession();
 237 }
 238
 239 wfProfileOut( $fname.'-User' );
 240 wfProfileIn( $fname.'-language2' );
 241
 242 function setupLangObj(&$langclass) {
 243         global $wgUseLatin1, $IP;
 244
 245         if( ! class_exists( $langclass ) ) {
 246                 # Default to English/UTF-8, or for non-UTF-8, to latin-1
 247                 $baseclass = 'LanguageUtf8';
 248                 if( $wgUseLatin1 )
 249                         $baseclass = 'LanguageLatin1';
 250                 require_once( "$IP/languages/$baseclass.php" );
 251                 $lc = strtolower(substr($langclass, 8));
 252                 $snip = "
 253                         class $langclass extends $baseclass {
 254                                 function getVariants() {
 255                                         return array(\"$lc\");
 256                                 }
 257
 258                         }";
 259
 260                 eval($snip);
 261         }
 262
 263         $lang = new $langclass();
 264
 265         return $lang;
 266 }
 267
 268 # $wgLanguageCode may be changed later to fit with user preference.
 269 # The content language will remain fixed as per the configuration,
 270 # so let's keep it.
 271 $wgContLanguageCode = $wgLanguageCode;
 272 $wgContLangClass = 'Language' . str_replace( '-', '_', ucfirst( $wgContLanguageCode ) );
 273
 274 $wgContLang = setupLangObj( $wgContLangClass );
 275
 276 // set default user option from content language
 277 if( !$wgUser->mDataLoaded ) {
 278         $wgUser->loadDefaultFromLanguage();
 279 }
 280
 281 // wgLanguageCode now specifically means the UI language
 282 $wgLanguageCode = $wgUser->getOption('language');
 283 if( empty( $wgLanguageCode ) ) {
 284         # Quick hack for upgrades where this will be blank,
 285         # and it's not handled right. Set to default.
 286         $wgLanguageCode = $wgContLanguageCode;
 287 }
 288
 289 $wgLangClass = 'Language'. str_replace( '-', '_', ucfirst( $wgLanguageCode ) );
 290
 291 if( $wgLangClass == $wgContLangClass ) {
 292         $wgLang = &$wgContLang;
 293 } else {
 294         wfSuppressWarnings();
 295         include_once("$IP/languages/$wgLangClass.php");
 296         wfRestoreWarnings();
 297
 298         $wgLang = setupLangObj( $wgLangClass );
 299 }
 300
 301 wfProfileOut( $fname.'-language' );
 302 wfProfileIn( $fname.'-MessageCache' );
 303
 304 $wgMessageCache = new MessageCache;
 305 $wgMessageCache->initialise( $messageMemc, $wgUseDatabaseMessages, $wgMsgCacheExpiry, $wgDBname);
 306
 307 wfProfileOut( $fname.'-MessageCache' );
 308
 309 #
 310 # I guess the warning about UI switching might still apply...
 311 #
 312 # FIXME: THE ABOVE MIGHT BREAK NAMESPACES, VARIABLES,
 313 # SEARCH INDEX UPDATES, AND MANY MANY THINGS.
 314 # DO NOT USE THIS MODE EXCEPT FOR TESTING RIGHT NOW.
 315 #
 316 # To disable it, the easiest thing could be to uncomment the
 317 # following; they should effectively disable the UI switch functionality
 318 #
 319 # $wgLangClass = $wgContLangClass;
 320 # $wgLanguageCode = $wgContLanguageCode;
 321 # $wgLang = $wgContLang;
 322 #
 323 # TODO: Need to change reference to $wgLang to $wgContLang at proper
 324 #       places, including namespaces, dates in signatures, magic words,
 325 #       and links
 326 #
 327 # TODO: Need to look at the issue of input/output encoding
 328 #
 329
 330
 331 wfProfileIn( $fname.'-OutputPage' );
 332
 333 $wgOut = new OutputPage();
 334 wfDebug( "\n\n" );
 335
 336 wfProfileOut( $fname.'-OutputPage' );
 337 wfProfileIn( $fname.'-DateFormatter' );
 338
 339 if ( $wgUseDynamicDates ) {
 340         require_once( 'DateFormatter.php' );
 341         global $wgDateFormatter;
 342         $wgDateFormatter = new DateFormatter;
 343 }
 344
 345 wfProfileOut( $fname.'-DateFormatter' );
 346 wfProfileIn( $fname.'-BlockCache' );
 347
 348 $wgBlockCache = new BlockCache( true );
 349
 350 wfProfileOut( $fname.'-BlockCache' );
 351 wfProfileIn( $fname.'-misc2' );
 352
 353 $wgDeferredUpdateList = array();
 354 $wgLinkCache = new LinkCache();
 355 $wgMagicWords = array();
 356 $wgMwRedir =& MagicWord::get( MAG_REDIRECT );
 357 $wgParserCache = new ParserCache( $messageMemc );
 358
 359 if ( $wgUseXMLparser ) $wgParser = new ParserXML();
 360 else $wgParser = new Parser();
 361 $wgOut->setParserOptions( ParserOptions::newFromUser( $wgUser ) );
 362 $wgMsgParserOptions = ParserOptions::newFromUser($wgUser);
 363 wfSeedRandom();
 364
 365 # Placeholders in case of DB error
 366 $wgTitle = Title::makeTitle( NS_SPECIAL, 'Error' );
 367 $wgArticle = new Article($wgTitle);
 368
 369 wfProfileOut( $fname.'-misc2' );
 370 wfProfileIn( $fname.'-extensions' );
 371
 372 # Extension setup functions for extensions other than skins
 373 # Entries should be added to this variable during the inclusion
 374 # of the extension file. This allows the extension to perform
 375 # any necessary initialisation in the fully initialised environment
 376 foreach ( $wgExtensionFunctions as $func ) {
 377         $func();
 378 }
 379
 380 $wgFullyInitialised = true;
 381 wfProfileOut( $fname.'-extensions' );
 382 wfProfileOut( $fname );
 383
 384 }
 385 ?>