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, $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                 global $hackwhere, $wgDBname;
  29                 $hackwhere[] = $fn;
  30                 if (function_exists("setproctitle"))
  31                         setproctitle($fn . " [$wgDBname]");
  32         }
  33         function wfProfileOut( $fn = '' ) {
  34                 global $hackwhere, $wgDBname;
  35                 if (count($hackwhere))
  36                         array_pop($hackwhere);
  37                 if (function_exists("setproctitle") && count($hackwhere))
  38                         setproctitle($hackwhere[count($hackwhere)-1] . " [$wgDBname]");
  39         }
  40         function wfGetProfilingOutput( $s, $e ) {}
  41         function wfProfileClose() {}
  42 }
  43
  44 $fname = 'Setup.php';
  45 wfProfileIn( $fname );
  46 global $wgUseDynamicDates;
  47 wfProfileIn( $fname.'-includes' );
  48
  49 require_once( 'GlobalFunctions.php' );
  50 require_once( 'Hooks.php' );
  51 require_once( 'Namespace.php' );
  52 require_once( 'RecentChange.php' );
  53 require_once( 'User.php' );
  54 require_once( 'Skin.php' );
  55 require_once( 'OutputPage.php' );
  56 require_once( 'LinkCache.php' );
  57 require_once( 'Title.php' );
  58 require_once( 'Article.php' );
  59 require_once( 'MagicWord.php' );
  60 require_once( 'Block.php' );
  61 require_once( 'MessageCache.php' );
  62 require_once( 'BlockCache.php' );
  63 require_once( 'Parser.php' );
  64 require_once( 'Parser.php' );
  65 require_once( 'ParserCache.php' );
  66 require_once( 'WebRequest.php' );
  67 require_once( 'LoadBalancer.php' );
  68 require_once( 'HistoryBlob.php' );
  69 require_once( 'ProxyTools.php' );
  70
  71 wfProfileOut( $fname.'-includes' );
  72 wfProfileIn( $fname.'-misc1' );
  73 global $wgUser, $wgLang, $wgContLang, $wgOut, $wgTitle;
  74 global $wgLangClass, $wgContLangClass;
  75 global $wgArticle, $wgDeferredUpdateList, $wgLinkCache;
  76 global $wgMemc, $wgMagicWords, $wgMwRedir, $wgDebugLogFile;
  77 global $wgMessageCache, $wgUseMemCached, $wgUseDatabaseMessages;
  78 global $wgMsgCacheExpiry, $wgCommandLineMode;
  79 global $wgBlockCache, $wgParserCache, $wgParser, $wgMsgParserOptions;
  80 global $wgLoadBalancer, $wgDBservers, $wgDebugDumpSql;
  81 global $wgDBserver, $wgDBuser, $wgDBpassword, $wgDBname, $wgDBtype;
  82 global $wgUseOldExistenceCheck, $wgEnablePersistentLC, $wgMasterWaitTimeout;
  83
  84 global $wgFullyInitialised;
  85
  86 $wgIP = wfGetIP();
  87 $wgRequest = new WebRequest();
  88
  89 # Useful debug output
  90 if ( $wgCommandLineMode ) {
  91         # wfDebug( '"' . implode( '"  "', $argv ) . '"' );
  92 } elseif ( function_exists( 'getallheaders' ) ) {
  93         wfDebug( "\nStart request\n" );
  94         wfDebug( $_SERVER['REQUEST_METHOD'] . ' ' . $_SERVER['REQUEST_URI'] . "\n" );
  95         $headers = getallheaders();
  96         foreach ($headers as $name => $value) {
  97                 wfDebug( "$name: $value\n" );
  98         }
  99         wfDebug( "\n" );
 100 } elseif( isset( $_SERVER['REQUEST_URI'] ) ) {
 101         wfDebug( $_SERVER['REQUEST_METHOD'] . ' ' . $_SERVER['REQUEST_URI'] . "\n" );
 102 }
 103
 104 # Disable linkscc except if the old existence check method is enabled
 105 if (!$wgUseOldExistenceCheck) {
 106         $wgEnablePersistentLC = false;
 107 }
 108
 109 wfProfileOut( $fname.'-misc1' );
 110 wfProfileIn( $fname.'-memcached' );
 111
 112 # FakeMemCachedClient imitates the API of memcached-client v. 0.1.2.
 113 # It acts as a memcached server with no RAM, that is, all objects are
 114 # cleared the moment they are set. All set operations succeed and all
 115 # get operations return null.
 116
 117 if( $wgUseMemCached ) {
 118         # Set up Memcached
 119         #
 120         require_once( 'memcached-client.php' );
 121
 122         /**
 123          *
 124          * @package MediaWiki
 125          */
 126         class MemCachedClientforWiki extends memcached {
 127                 function _debugprint( $text ) {
 128                         wfDebug( "memcached: $text\n" );
 129                 }
 130         }
 131
 132         $wgMemc = new MemCachedClientforWiki( array('persistant' => true, 'compress_threshold' => 1500 ) );
 133         $wgMemc->set_servers( $wgMemCachedServers );
 134         $wgMemc->set_debug( $wgMemCachedDebug );
 135
 136         $messageMemc = &$wgMemc;
 137 } elseif ( $wgUseTurckShm ) {
 138         # Turck shared memory
 139         #
 140         require_once( 'ObjectCache.php' );
 141         $wgMemc = new TurckBagOStuff;
 142         $messageMemc = &$wgMemc;
 143 } elseif ( $wgUseEAccelShm ) {
 144         # eAccelerator shared memory
 145         #
 146         require_once( 'ObjectCache.php' );
 147         $wgMemc = new eAccelBagOStuff;
 148         $messageMemc = &$wgMemc;
 149 } else {
 150         /**
 151          * No shared memory
 152          * @package MediaWiki
 153          */
 154         class FakeMemCachedClient {
 155                 function add ($key, $val, $exp = 0) { return true; }
 156                 function decr ($key, $amt=1) { return null; }
 157                 function delete ($key, $time = 0) { return false; }
 158                 function disconnect_all () { }
 159                 function enable_compress ($enable) { }
 160                 function forget_dead_hosts () { }
 161                 function get ($key) { return null; }
 162                 function get_multi ($keys) { return array_pad(array(), count($keys), null); }
 163                 function incr ($key, $amt=1) { return null; }
 164                 function replace ($key, $value, $exp=0) { return false; }
 165                 function run_command ($sock, $cmd) { return null; }
 166                 function set ($key, $value, $exp=0){ return true; }
 167                 function set_compress_threshold ($thresh){ }
 168                 function set_debug ($dbg) { }
 169                 function set_servers ($list) { }
 170         }
 171         $wgMemc = new FakeMemCachedClient();
 172
 173         # Give the message cache a separate cache in the DB.
 174         # This is a speedup over separately querying every message used
 175         require_once( 'ObjectCache.php' );
 176         $messageMemc = new MediaWikiBagOStuff('objectcache');
 177 }
 178
 179 wfProfileOut( $fname.'-memcached' );
 180 wfProfileIn( $fname.'-SetupSession' );
 181
 182 if( !$wgCommandLineMode && ( isset( $_COOKIE[ini_get('session.name')] ) || isset( $_COOKIE[$wgDBname.'Token'] ) ) ) {
 183         User::SetupSession();
 184         $wgSessionStarted = true;
 185 } else {
 186         $wgSessionStarted = false;
 187 }
 188
 189 wfProfileOut( $fname.'-SetupSession' );
 190 wfProfileIn( $fname.'-database' );
 191
 192 if ( !$wgDBservers ) {
 193         $wgDBservers = array(array(
 194                 'host' => $wgDBserver,
 195                 'user' => $wgDBuser,
 196                 'password' => $wgDBpassword,
 197                 'dbname' => $wgDBname,
 198                 'type' => $wgDBtype,
 199                 'load' => 1,
 200                 'flags' => ($wgDebugDumpSql ? DBO_DEBUG : 0) | DBO_DEFAULT
 201         ));
 202 }
 203 $wgLoadBalancer = LoadBalancer::newFromParams( $wgDBservers, false, $wgMasterWaitTimeout );
 204 $wgLoadBalancer->loadMasterPos();
 205
 206 wfProfileOut( $fname.'-database' );
 207 wfProfileIn( $fname.'-language1' );
 208
 209 require_once( "$IP/languages/Language.php" );
 210
 211 wfProfileOut( $fname.'-language1' );
 212 wfProfileIn( $fname.'-User' );
 213
 214 # Skin setup functions
 215 # Entries can be added to this variable during the inclusion
 216 # of the extension file. Skins can then perform any necessary initialisation.
 217 foreach ( $wgSkinExtensionFunctions as $func ) {
 218         $func();
 219 }
 220
 221 if( !is_object( $wgAuth ) ) {
 222         require_once( 'AuthPlugin.php' );
 223         $wgAuth = new AuthPlugin();
 224 }
 225
 226 if( $wgCommandLineMode ) {
 227         # Used for some maintenance scripts; user session cookies can screw things up
 228         # when the database is in an in-between state.
 229         $wgUser = new User();
 230         # Prevent loading User settings from the DB.
 231         $wgUser->setLoaded( true );
 232 } else {
 233         $wgUser = User::loadFromSession();
 234 }
 235
 236 wfProfileOut( $fname.'-User' );
 237 wfProfileIn( $fname.'-language2' );
 238
 239 function setupLangObj(&$langclass) {
 240         global $IP;
 241
 242         if( ! class_exists( $langclass ) ) {
 243                 # Default to English/UTF-8
 244                 $baseclass = 'LanguageUtf8';
 245                 require_once( "$IP/languages/$baseclass.php" );
 246                 $lc = strtolower(substr($langclass, 8));
 247                 $snip = "
 248                         class $langclass extends $baseclass {
 249                                 function getVariants() {
 250                                         return array(\"$lc\");
 251                                 }
 252
 253                         }";
 254                 eval($snip);
 255         }
 256
 257         $lang = new $langclass();
 258
 259         return $lang;
 260 }
 261
 262 # $wgLanguageCode may be changed later to fit with user preference.
 263 # The content language will remain fixed as per the configuration,
 264 # so let's keep it.
 265 $wgContLanguageCode = $wgLanguageCode;
 266 $wgContLangClass = 'Language' . str_replace( '-', '_', ucfirst( $wgContLanguageCode ) );
 267
 268 $wgContLang = setupLangObj( $wgContLangClass );
 269 $wgContLang->initEncoding();
 270
 271 // set default user option from content language
 272 if( !$wgUser->mDataLoaded ) {
 273         $wgUser->loadDefaultFromLanguage();
 274 }
 275
 276 // wgLanguageCode now specifically means the UI language
 277 $wgLanguageCode = $wgUser->getOption('language');
 278 # Validate $wgLanguageCode, which will soon be sent to an eval()
 279 if( empty( $wgLanguageCode ) || !preg_match( '/^[a-z\-]*$/', $wgLanguageCode ) ) {
 280         $wgLanguageCode = $wgContLanguageCode;
 281 }
 282
 283 $wgLangClass = 'Language'. str_replace( '-', '_', ucfirst( $wgLanguageCode ) );
 284
 285 if( $wgLangClass == $wgContLangClass ) {
 286         $wgLang = &$wgContLang;
 287 } else {
 288         wfSuppressWarnings();
 289         include_once("$IP/languages/$wgLangClass.php");
 290         wfRestoreWarnings();
 291
 292         $wgLang = setupLangObj( $wgLangClass );
 293 }
 294
 295 wfProfileOut( $fname.'-language' );
 296 wfProfileIn( $fname.'-MessageCache' );
 297
 298 $wgMessageCache = new MessageCache;
 299 $wgMessageCache->initialise( $messageMemc, $wgUseDatabaseMessages, $wgMsgCacheExpiry, $wgDBname);
 300
 301 wfProfileOut( $fname.'-MessageCache' );
 302
 303 #
 304 # I guess the warning about UI switching might still apply...
 305 #
 306 # FIXME: THE ABOVE MIGHT BREAK NAMESPACES, VARIABLES,
 307 # SEARCH INDEX UPDATES, AND MANY MANY THINGS.
 308 # DO NOT USE THIS MODE EXCEPT FOR TESTING RIGHT NOW.
 309 #
 310 # To disable it, the easiest thing could be to uncomment the
 311 # following; they should effectively disable the UI switch functionality
 312 #
 313 # $wgLangClass = $wgContLangClass;
 314 # $wgLanguageCode = $wgContLanguageCode;
 315 # $wgLang = $wgContLang;
 316 #
 317 # TODO: Need to change reference to $wgLang to $wgContLang at proper
 318 #       places, including namespaces, dates in signatures, magic words,
 319 #       and links
 320 #
 321 # TODO: Need to look at the issue of input/output encoding
 322 #
 323
 324
 325 wfProfileIn( $fname.'-OutputPage' );
 326
 327 $wgOut = new OutputPage();
 328 wfDebug( "\n\n" );
 329
 330 wfProfileOut( $fname.'-OutputPage' );
 331 wfProfileIn( $fname.'-DateFormatter' );
 332
 333 if ( $wgUseDynamicDates ) {
 334         require_once( 'DateFormatter.php' );
 335         global $wgDateFormatter;
 336         $wgDateFormatter = new DateFormatter;
 337 }
 338
 339 wfProfileOut( $fname.'-DateFormatter' );
 340 wfProfileIn( $fname.'-BlockCache' );
 341
 342 $wgBlockCache = new BlockCache( true );
 343
 344 wfProfileOut( $fname.'-BlockCache' );
 345 wfProfileIn( $fname.'-misc2' );
 346
 347 $wgDeferredUpdateList = array();
 348 $wgPostCommitUpdateList = array();
 349
 350 $wgLinkCache = new LinkCache();
 351 $wgMagicWords = array();
 352 $wgMwRedir =& MagicWord::get( MAG_REDIRECT );
 353 $wgParserCache = new ParserCache( $messageMemc );
 354
 355 if ( $wgUseXMLparser ) {
 356         require_once( 'ParserXML.php' );
 357         $wgParser = new ParserXML();
 358 } else {
 359         $wgParser = new Parser();
 360 }
 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 ?>