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         $allsquids = array_merge($wgSquidServers, $wgSquidServersNoPurge);
  40         while(in_array(trim(end($hopips)), $allsquids)){
  41                 array_pop($hopips);
  42         }
  43         $wgIP = trim(end($hopips));
  44 } elseif( isset( $_SERVER['REMOTE_ADDR'] ) ) {
  45         $wgIP = $_SERVER['REMOTE_ADDR'];
  46 } else {
  47         # Running on CLI?
  48         $wgIP = '127.0.0.1';
  49 }
  50
  51 if ( $wgUseData ) {
  52         $wgExtraNamespaces[20] = 'Data' ;
  53         $wgExtraNamespaces[21] = 'Data_talk' ;
  54 }
  55
  56 $fname = 'Setup.php';
  57 wfProfileIn( $fname );
  58 global $wgUseDynamicDates;
  59 wfProfileIn( $fname.'-includes' );
  60
  61 require_once( 'GlobalFunctions.php' );
  62 require_once( 'Hooks.php' );
  63 require_once( 'Namespace.php' );
  64 require_once( 'RecentChange.php' );
  65 require_once( 'User.php' );
  66 require_once( 'Skin.php' );
  67 require_once( 'OutputPage.php' );
  68 require_once( 'LinkCache.php' );
  69 require_once( 'Title.php' );
  70 require_once( 'Article.php' );
  71 require_once( 'MagicWord.php' );
  72 require_once( 'Block.php' );
  73 require_once( 'MessageCache.php' );
  74 require_once( 'BlockCache.php' );
  75 require_once( 'Parser.php' );
  76 require_once( 'ParserXML.php' );
  77 require_once( 'ParserCache.php' );
  78 require_once( 'WebRequest.php' );
  79 require_once( 'LoadBalancer.php' );
  80 require_once( 'HistoryBlob.php' );
  81
  82 $wgRequest = new WebRequest();
  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, $wgMasterWaitTimeout;
  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, false, $wgMasterWaitTimeout );
 208 $wgLoadBalancer->loadMasterPos();
 209
 210 wfProfileOut( $fname.'-database' );
 211 wfProfileIn( $fname.'-language1' );
 212
 213 require_once( "$IP/languages/Language.php" );
 214
 215 wfProfileOut( $fname.'-language1' );
 216 wfProfileIn( $fname.'-User' );
 217
 218 # Skin setup functions
 219 # Entries can be added to this variable during the inclusion
 220 # of the extension file. Skins can then perform any necessary initialisation.
 221 foreach ( $wgSkinExtensionFunctions as $func ) {
 222         $func();
 223 }
 224
 225 if( !is_object( $wgAuth ) ) {
 226         require_once( 'AuthPlugin.php' );
 227         $wgAuth = new AuthPlugin();
 228 }
 229
 230 if( $wgCommandLineMode ) {
 231         # Used for some maintenance scripts; user session cookies can screw things up
 232         # when the database is in an in-between state.
 233         $wgUser = new User();
 234         # Prevent loading User settings from the DB.
 235         $wgUser->setLoaded( true );
 236 } else {
 237         $wgUser = User::loadFromSession();
 238 }
 239
 240 wfProfileOut( $fname.'-User' );
 241 wfProfileIn( $fname.'-language2' );
 242
 243 function setupLangObj(&$langclass) {
 244         global $wgUseLatin1, $IP;
 245
 246         if( ! class_exists( $langclass ) ) {
 247                 # Default to English/UTF-8, or for non-UTF-8, to latin-1
 248                 $baseclass = 'LanguageUtf8';
 249                 if( $wgUseLatin1 )
 250                         $baseclass = 'LanguageLatin1';
 251                 require_once( "$IP/languages/$baseclass.php" );
 252                 $lc = strtolower(substr($langclass, 8));
 253                 $snip = "
 254                         class $langclass extends $baseclass {
 255                                 function getVariants() {
 256                                         return array(\"$lc\");
 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 # Validate $wgLanguageCode, which will soon be sent to an eval()
 284 if( empty( $wgLanguageCode ) || !preg_match( '/^[a-z\-]*$/', $wgLanguageCode ) ) {
 285         $wgLanguageCode = $wgContLanguageCode;
 286 }
 287
 288 $wgLangClass = 'Language'. str_replace( '-', '_', ucfirst( $wgLanguageCode ) );
 289
 290 if( $wgLangClass == $wgContLangClass ) {
 291         $wgLang = &$wgContLang;
 292 } else {
 293         wfSuppressWarnings();
 294         include_once("$IP/languages/$wgLangClass.php");
 295         wfRestoreWarnings();
 296
 297         $wgLang = setupLangObj( $wgLangClass );
 298 }
 299
 300 wfProfileOut( $fname.'-language' );
 301 wfProfileIn( $fname.'-MessageCache' );
 302
 303 $wgMessageCache = new MessageCache;
 304 $wgMessageCache->initialise( $messageMemc, $wgUseDatabaseMessages, $wgMsgCacheExpiry, $wgDBname);
 305
 306 wfProfileOut( $fname.'-MessageCache' );
 307
 308 #
 309 # I guess the warning about UI switching might still apply...
 310 #
 311 # FIXME: THE ABOVE MIGHT BREAK NAMESPACES, VARIABLES,
 312 # SEARCH INDEX UPDATES, AND MANY MANY THINGS.
 313 # DO NOT USE THIS MODE EXCEPT FOR TESTING RIGHT NOW.
 314 #
 315 # To disable it, the easiest thing could be to uncomment the
 316 # following; they should effectively disable the UI switch functionality
 317 #
 318 # $wgLangClass = $wgContLangClass;
 319 # $wgLanguageCode = $wgContLanguageCode;
 320 # $wgLang = $wgContLang;
 321 #
 322 # TODO: Need to change reference to $wgLang to $wgContLang at proper
 323 #       places, including namespaces, dates in signatures, magic words,
 324 #       and links
 325 #
 326 # TODO: Need to look at the issue of input/output encoding
 327 #
 328
 329
 330 wfProfileIn( $fname.'-OutputPage' );
 331
 332 $wgOut = new OutputPage();
 333 wfDebug( "\n\n" );
 334
 335 wfProfileOut( $fname.'-OutputPage' );
 336 wfProfileIn( $fname.'-DateFormatter' );
 337
 338 if ( $wgUseDynamicDates ) {
 339         require_once( 'DateFormatter.php' );
 340         global $wgDateFormatter;
 341         $wgDateFormatter = new DateFormatter;
 342 }
 343
 344 wfProfileOut( $fname.'-DateFormatter' );
 345 wfProfileIn( $fname.'-BlockCache' );
 346
 347 $wgBlockCache = new BlockCache( true );
 348
 349 wfProfileOut( $fname.'-BlockCache' );
 350 wfProfileIn( $fname.'-misc2' );
 351
 352 $wgDeferredUpdateList = array();
 353 $wgLinkCache = new LinkCache();
 354 $wgMagicWords = array();
 355 $wgMwRedir =& MagicWord::get( MAG_REDIRECT );
 356 $wgParserCache = new ParserCache( $messageMemc );
 357
 358 if ( $wgUseXMLparser ) $wgParser = new ParserXML();
 359 else $wgParser = new Parser();
 360 $wgOut->setParserOptions( ParserOptions::newFromUser( $wgUser ) );
 361 $wgMsgParserOptions = ParserOptions::newFromUser($wgUser);
 362 wfSeedRandom();
 363
 364 # Placeholders in case of DB error
 365 $wgTitle = Title::makeTitle( NS_SPECIAL, 'Error' );
 366 $wgArticle = new Article($wgTitle);
 367
 368 # Site notice
 369 # FIXME: This is an ugly hack, which wastes runtime on cache hits
 370 # and raw page views by forcing initialization of the message cache.
 371 # Try to fake around it for raw at least:
 372 if( !isset( $_REQUEST['action'] ) || $_REQUEST['action'] != 'raw' ) {
 373         $notice = wfMsg( 'sitenotice' );
 374         if($notice == '&lt;sitenotice&gt;') $notice = '';
 375         # Allow individual wikis to turn it off
 376         if ( $notice == '-' ) {
 377                 $wgSiteNotice = '';
 378         } else {
 379                 # if($wgSiteNotice) $notice .= $wgSiteNotice;
 380                 if ($notice == '') {
 381                         $notice = $wgSiteNotice;
 382                 }
 383                 if($notice != '-' && $notice != '') {
 384                         $specialparser = new Parser();
 385                         $parserOutput = $specialparser->parse( $notice, $wgTitle, $wgOut->mParserOptions, false );
 386                         $wgSiteNotice = $parserOutput->getText();
 387                 }
 388         }
 389 }
 390
 391 wfProfileOut( $fname.'-misc2' );
 392 wfProfileIn( $fname.'-extensions' );
 393
 394 # Extension setup functions for extensions other than skins
 395 # Entries should be added to this variable during the inclusion
 396 # of the extension file. This allows the extension to perform
 397 # any necessary initialisation in the fully initialised environment
 398 foreach ( $wgExtensionFunctions as $func ) {
 399         $func();
 400 }
 401
 402 $wgFullyInitialised = true;
 403 wfProfileOut( $fname.'-extensions' );
 404 wfProfileOut( $fname );
 405
 406 }
 407 ?>