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;
  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
  51 $fname = 'Setup.php';
  52 wfProfileIn( $fname );
  53 global $wgUseDynamicDates;
  54 wfProfileIn( $fname.'-includes' );
  55
  56 require_once( 'GlobalFunctions.php' );
  57 require_once( 'Namespace.php' );
  58 require_once( 'RecentChange.php' );
  59 require_once( 'User.php' );
  60 require_once( 'Skin.php' );
  61 require_once( 'OutputPage.php' );
  62 require_once( 'LinkCache.php' );
  63 require_once( 'Title.php' );
  64 require_once( 'Article.php' );
  65 require_once( 'MagicWord.php' );
  66 require_once( 'Block.php' );
  67 require_once( 'MessageCache.php' );
  68 require_once( 'BlockCache.php' );
  69 require_once( 'Parser.php' );
  70 require_once( 'ParserCache.php' );
  71 require_once( 'WebRequest.php' );
  72 require_once( 'LoadBalancer.php' );
  73
  74 $wgRequest = new WebRequest();
  75
  76
  77
  78 wfProfileOut( $fname.'-includes' );
  79 wfProfileIn( $fname.'-misc1' );
  80 global $wgUser, $wgLang, $wgContLang, $wgOut, $wgTitle;
  81 global $wgArticle, $wgDeferredUpdateList, $wgLinkCache;
  82 global $wgMemc, $wgMagicWords, $wgMwRedir, $wgDebugLogFile;
  83 global $wgMessageCache, $wgUseMemCached, $wgUseDatabaseMessages, $wgContMessageCach;
  84 global $wgMsgCacheExpiry, $wgCommandLineMode;
  85 global $wgBlockCache, $wgParserCache, $wgParser, $wgDBConnections;
  86 global $wgLoadBalancer, $wgDBservers, $wgDebugDumpSql;
  87 global $wgDBserver, $wgDBuser, $wgDBpassword, $wgDBname, $wgDBtype;
  88 global $wgUseOldExistenceCheck, $wgEnablePersistentLC;
  89
  90 global $wgFullyInitialised;
  91
  92 # Useful debug output
  93 if ( $wgCommandLineMode ) {
  94         # wfDebug( '"' . implode( '"  "', $argv ) . '"' );
  95 } elseif ( function_exists( 'getallheaders' ) ) {
  96         wfDebug( "\nStart request\n" );
  97         wfDebug( $_SERVER['REQUEST_METHOD'] . ' ' . $_SERVER['REQUEST_URI'] . "\n" );
  98         $headers = getallheaders();
  99         foreach ($headers as $name => $value) {
 100                 wfDebug( "$name: $value\n" );
 101         }
 102         wfDebug( "\n" );
 103 } else {
 104         wfDebug( $_SERVER['REQUEST_METHOD'] . ' ' . $_SERVER['REQUEST_URI'] . "\n" );
 105 }
 106
 107 # Disable linkscc except if the old existence check method is enabled
 108 if (!$wgUseOldExistenceCheck) {
 109         $wgEnablePersistentLC = false;
 110 }
 111
 112 wfProfileOut( $fname.'-misc1' );
 113 wfProfileIn( $fname.'-memcached' );
 114
 115 # FakeMemCachedClient imitates the API of memcached-client v. 0.1.2.
 116 # It acts as a memcached server with no RAM, that is, all objects are
 117 # cleared the moment they are set. All set operations succeed and all
 118 # get operations return null.
 119
 120 if( $wgUseMemCached ) {
 121         # Set up Memcached
 122         #
 123         require_once( 'memcached-client.php' );
 124
 125         /**
 126          *
 127          * @package MediaWiki
 128          */
 129         class MemCachedClientforWiki extends memcached {
 130                 function _debugprint( $text ) {
 131                         wfDebug( "memcached: $text\n" );
 132                 }
 133         }
 134
 135         $wgMemc = new MemCachedClientforWiki( array('persistant' => true) );
 136         $wgMemc->set_servers( $wgMemCachedServers );
 137         $wgMemc->set_debug( $wgMemCachedDebug );
 138
 139         $messageMemc = &$wgMemc;
 140 } elseif ( $wgUseTurckShm ) {
 141         # Turck shared memory
 142         #
 143         require_once( 'ObjectCache.php' );
 144         $wgMemc = new TurckBagOStuff;
 145         $messageMemc = &$wgMemc;
 146 } else {
 147         /**
 148          * No shared memory
 149          * @package MediaWiki
 150          */
 151         class FakeMemCachedClient {
 152                 function add ($key, $val, $exp = 0) { return true; }
 153                 function decr ($key, $amt=1) { return null; }
 154                 function delete ($key, $time = 0) { return false; }
 155                 function disconnect_all () { }
 156                 function enable_compress ($enable) { }
 157                 function forget_dead_hosts () { }
 158                 function get ($key) { return null; }
 159                 function get_multi ($keys) { return array_pad(array(), count($keys), null); }
 160                 function incr ($key, $amt=1) { return null; }
 161                 function replace ($key, $value, $exp=0) { return false; }
 162                 function run_command ($sock, $cmd) { return null; }
 163                 function set ($key, $value, $exp=0){ return true; }
 164                 function set_compress_threshold ($thresh){ }
 165                 function set_debug ($dbg) { }
 166                 function set_servers ($list) { }
 167         }
 168         $wgMemc = new FakeMemCachedClient();
 169
 170         # Give the message cache a separate cache in the DB.
 171         # This is a speedup over separately querying every message used
 172         require_once( 'ObjectCache.php' );
 173         $messageMemc = new MediaWikiBagOStuff('objectcache');
 174 }
 175
 176 wfProfileOut( $fname.'-memcached' );
 177 wfProfileIn( $fname.'-SetupSession' );
 178
 179 if( !$wgCommandLineMode && ( isset( $_COOKIE[ini_get('session.name')] ) || isset( $_COOKIE[$wgDBname.'Password'] ) ) ) {
 180         User::SetupSession();
 181         $wgSessionStarted = true;
 182 } else {
 183         $wgSessionStarted = false;
 184 }
 185
 186 wfProfileOut( $fname.'-SetupSession' );
 187 wfProfileIn( $fname.'-database' );
 188
 189 if ( !$wgDBservers ) {
 190         $wgDBservers = array(array(
 191                 'host' => $wgDBserver,
 192                 'user' => $wgDBuser,
 193                 'password' => $wgDBpassword,
 194                 'dbname' => $wgDBname,
 195                 'type' => $wgDBtype,
 196                 'load' => 1,
 197                 'flags' => ($wgDebugDumpSql ? DBO_DEBUG : 0) | DBO_DEFAULT
 198         ));
 199 }
 200 $wgLoadBalancer = LoadBalancer::newFromParams( $wgDBservers );
 201 $wgLoadBalancer->loadMasterPos();
 202
 203 wfProfileOut( $fname.'-database' );
 204 wfProfileIn( $fname.'-User' );
 205
 206 # Extension setup functions
 207 # Entries should be added to this variable during the inclusion
 208 # of the extension file. This allows the extension to perform
 209 # any necessary initialisation in the fully initialised environment
 210 foreach ( $wgSkinExtensionFunctions as $func ) {
 211         $func();
 212 }
 213
 214 if( $wgCommandLineMode ) {
 215         # Used for some maintenance scripts; user session cookies can screw things up
 216         # when the database is in an in-between state.
 217         $wgUser = new User();
 218 } else {
 219         $wgUser = User::loadFromSession();
 220 }
 221
 222 wfProfileOut( $fname.'-User' );
 223 wfProfileIn( $fname.'-language' );
 224
 225 function setupLangObj(&$langclass, $langcode) {
 226     global $wgUseLatin1;
 227
 228
 229     if( ! class_exists( $langclass ) || ($langcode == 'en' && !$wgUseLatin1) ) {
 230 # Default to English/UTF-8
 231         require_once( 'languages/LanguageUtf8.php' );
 232         $langclass = 'LanguageUtf8';
 233     }
 234
 235     $lang = new $langclass();
 236     if ( !is_object($lang) ) {
 237         print "No language class ($wgLang)\N";
 238     }
 239
 240     if( $wgUseLatin1 && $langcode != 'en' ) {
 241 # For non-UTF-8 non-English.
 242         require_once( 'languages/LanguageLatin1.php' );
 243         $xxx = new LanguageLatin1( $lang );
 244         unset( $lang );
 245         $lang = $xxx;
 246     }
 247     return $lang;
 248 }
 249
 250 require_once( 'languages/Language.php' );
 251
 252 $wgContLangClass = 'Language' . str_replace( '-', '_', ucfirst( $wgContLanguageCode ) );
 253
 254 $wgContLang = setupLangObj($wgContLangClass, $wgContLangClass);
 255  $n = get_class($wgContLang);
 256
 257 // set default user option from content language
 258 if(!$wgUser->mDataLoaded) { $wgUser->loadDefaultFromLanguage(); }
 259
 260 // wgLanguageCode now specifically means the UI language
 261 $wgLanguageCode = $wgUser->getOption('language');
 262
 263 $wgLangClass = 'Language'. str_replace( '-', '_', ucfirst( $wgLanguageCode ) );
 264  if($wgLangClass == $wgContLangClass) {
 265      $wgLang = &$wgContLang;
 266  }
 267  else {
 268      include_once("languages/$wgLangClass.php");
 269      $wgLang = setupLangObj($wgLangClass, $wgLanguageCode);
 270  }
 271
 272
 273 wfProfileOut( $fname.'-language' );
 274 wfProfileIn( $fname.'-MessageCache' );
 275
 276 $wgContMessageCache = new MessageCache;
 277 $wgContMessageCache->initialise( $messageMemc, $wgUseDatabaseMessages, $wgMsgCacheExpiry, $wgDBname, $wgContLang, $wgContLanguageCode );
 278 if($wgLangClass == $wgContLangClass) {
 279     $wgMessageCache = &$wgContMessageCache;
 280 }
 281 else {
 282     $wgMessageCache = new MessageCache;
 283     $wgMessageCache->initialise( $messageMemc,false , $wgMsgCacheExpiry, $wgDBname.":$wgLangClass", $wgLang, $wgLanguageCode);
 284 }
 285
 286 wfProfileOut( $fname.'-MessageCache' );
 287
 288 #
 289 # I guess the warning about UI switching might still apply...
 290 #
 291 # FIXME: THE ABOVE MIGHT BREAK NAMESPACES, VARIABLES,
 292 # SEARCH INDEX UPDATES, AND MANY MANY THINGS.
 293 # DO NOT USE THIS MODE EXCEPT FOR TESTING RIGHT NOW.
 294 #
 295 # To disable it, the easiest thing could be to uncomment the
 296 # following; they should effectively disable the UI switch functionality
 297 #
 298 # $wgLangClass = $wgContLangClass;
 299 # $wgLanguageCode = $wgContLanguageCode;
 300 # $wgLang = $wgContLang;
 301 # $wgMessageCache = $wgContMessageCache;
 302 #
 303
 304 wfProfileIn( $fname.'-OutputPage' );
 305
 306 $wgOut = new OutputPage();
 307 wfDebug( "\n\n" );
 308
 309 wfProfileOut( $fname.'-OutputPage' );
 310 wfProfileIn( $fname.'-DateFormatter' );
 311
 312 if ( $wgUseDynamicDates ) {
 313         require_once( 'DateFormatter.php' );
 314         global $wgDateFormatter;
 315         $wgDateFormatter = new DateFormatter;
 316 }
 317
 318 wfProfileOut( $fname.'-DateFormatter' );
 319 wfProfileIn( $fname.'-BlockCache' );
 320
 321 $wgBlockCache = new BlockCache( true );
 322
 323 wfProfileOut( $fname.'-BlockCache' );
 324 wfProfileIn( $fname.'-misc2' );
 325
 326 $wgDeferredUpdateList = array();
 327 $wgLinkCache = new LinkCache();
 328 $wgMagicWords = array();
 329 $wgMwRedir =& MagicWord::get( MAG_REDIRECT );
 330 $wgParserCache = new ParserCache();
 331 $wgParser = new Parser();
 332 $wgOut->setParserOptions( ParserOptions::newFromUser( $wgUser ) );
 333 $wgDBConnections = array();
 334 wfSeedRandom();
 335
 336 # Placeholders in case of DB error
 337 $wgTitle = Title::newFromText( wfMsgForContent( 'badtitle' ) );
 338 $wgArticle = new Article($wgTitle);
 339
 340 wfProfileOut( $fname.'-misc2' );
 341 wfProfileIn( $fname.'-extensions' );
 342
 343 # Extension setup functions
 344 # Entries should be added to this variable during the inclusion
 345 # of the extension file. This allows the extension to perform
 346 # any necessary initialisation in the fully initialised environment
 347 foreach ( $wgExtensionFunctions as $func ) {
 348         $func();
 349 }
 350
 351 $wgFullyInitialised = true;
 352 wfProfileOut( $fname.'-extensions' );
 353 wfProfileOut( $fname );
 354
 355 }
 356 ?>