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