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