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 } else {
  44         $wgIP = getenv('REMOTE_ADDR');
  45 }
  46
  47
  48 $fname = 'Setup.php';
  49 wfProfileIn( $fname );
  50 global $wgUseDynamicDates;
  51 wfProfileIn( $fname.'-includes' );
  52
  53 require_once( 'GlobalFunctions.php' );
  54 require_once( 'Namespace.php' );
  55 require_once( 'RecentChange.php' );
  56 require_once( 'User.php' );
  57 require_once( 'Skin.php' );
  58 require_once( 'OutputPage.php' );
  59 require_once( 'LinkCache.php' );
  60 require_once( 'Title.php' );
  61 require_once( 'Article.php' );
  62 require_once( 'MagicWord.php' );
  63 require_once( 'Block.php' );
  64 require_once( 'MessageCache.php' );
  65 require_once( 'BlockCache.php' );
  66 require_once( 'Parser.php' );
  67 require_once( 'ParserCache.php' );
  68 require_once( 'WebRequest.php' );
  69 require_once( 'LoadBalancer.php' );
  70
  71 $wgRequest = new WebRequest();
  72
  73
  74
  75 wfProfileOut( $fname.'-includes' );
  76 wfProfileIn( $fname.'-misc1' );
  77 global $wgUser, $wgLang, $wgOut, $wgTitle;
  78 global $wgArticle, $wgDeferredUpdateList, $wgLinkCache;
  79 global $wgMemc, $wgMagicWords, $wgMwRedir, $wgDebugLogFile;
  80 global $wgMessageCache, $wgUseMemCached, $wgUseDatabaseMessages;
  81 global $wgMsgCacheExpiry, $wgCommandLineMode;
  82 global $wgBlockCache, $wgParserCache, $wgParser, $wgDBConnections;
  83 global $wgLoadBalancer, $wgDBservers, $wgDebugDumpSql;
  84 global $wgDBserver, $wgDBuser, $wgDBpassword, $wgDBname, $wgDBtype;
  85 global $wgUseOldExistenceCheck, $wgEnablePersistentLC;
  86
  87 global $wgFullyInitialised;
  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 } else {
 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) );
 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 } else {
 144         /**
 145          * No shared memory
 146          * @package MediaWiki
 147          */
 148         class FakeMemCachedClient {
 149                 function add ($key, $val, $exp = 0) { return true; }
 150                 function decr ($key, $amt=1) { return null; }
 151                 function delete ($key, $time = 0) { return false; }
 152                 function disconnect_all () { }
 153                 function enable_compress ($enable) { }
 154                 function forget_dead_hosts () { }
 155                 function get ($key) { return null; }
 156                 function get_multi ($keys) { return array_pad(array(), count($keys), null); }
 157                 function incr ($key, $amt=1) { return null; }
 158                 function replace ($key, $value, $exp=0) { return false; }
 159                 function run_command ($sock, $cmd) { return null; }
 160                 function set ($key, $value, $exp=0){ return true; }
 161                 function set_compress_threshold ($thresh){ }
 162                 function set_debug ($dbg) { }
 163                 function set_servers ($list) { }
 164         }
 165         $wgMemc = new FakeMemCachedClient();
 166
 167         # Give the message cache a separate cache in the DB.
 168         # This is a speedup over separately querying every message used
 169         require_once( 'ObjectCache.php' );
 170         $messageMemc = new MediaWikiBagOStuff('objectcache');
 171 }
 172
 173 wfProfileOut( $fname.'-memcached' );
 174 wfProfileIn( $fname.'-SetupSession' );
 175
 176 if( !$wgCommandLineMode && ( isset( $_COOKIE[ini_get('session.name')] ) || isset( $_COOKIE[$wgDBname.'Password'] ) ) ) {
 177         User::SetupSession();
 178         $wgSessionStarted = true;
 179 } else {
 180         $wgSessionStarted = false;
 181 }
 182
 183 wfProfileOut( $fname.'-SetupSession' );
 184 wfProfileIn( $fname.'-database' );
 185
 186 if ( !$wgDBservers ) {
 187         $wgDBservers = array(array(
 188                 'host' => $wgDBserver,
 189                 'user' => $wgDBuser,
 190                 'password' => $wgDBpassword,
 191                 'dbname' => $wgDBname,
 192                 'type' => $wgDBtype,
 193                 'load' => 1,
 194                 'flags' => ($wgDebugDumpSql ? DBO_DEBUG : 0) | DBO_DEFAULT
 195         ));
 196 }
 197 $wgLoadBalancer = LoadBalancer::newFromParams( $wgDBservers );
 198 $wgLoadBalancer->loadMasterPos();
 199
 200 wfProfileOut( $fname.'-database' );
 201 wfProfileIn( $fname.'-language' );
 202 require_once( 'languages/Language.php' );
 203
 204 $wgMessageCache = new MessageCache;
 205
 206 $wgLangClass = 'Language' . ucfirst( $wgLanguageCode );
 207 if( ! class_exists( $wgLangClass ) || ($wgLanguageCode == 'en' && !$wgUseLatin1) ) {
 208         # Default to English/UTF-8
 209         require_once( 'languages/LanguageUtf8.php' );
 210         $wgLangClass = 'LanguageUtf8';
 211 }
 212
 213 $wgLang = new $wgLangClass();
 214 if ( !is_object($wgLang) ) {
 215         print "No language class ($wgLang)\N";
 216 }
 217
 218 if( $wgUseLatin1 && $wgLanguageCode != 'en' ) {
 219         # For non-UTF-8 non-English.
 220         require_once( 'languages/LanguageLatin1.php' );
 221         $xxx = new LanguageLatin1( $wgLang );
 222         unset( $wgLang );
 223         $wgLang = $xxx;
 224 }
 225 wfProfileOut( $fname.'-language' );
 226 wfProfileIn( $fname.'-MessageCache' );
 227
 228 $wgMessageCache->initialise( $messageMemc, $wgUseDatabaseMessages, $wgMsgCacheExpiry, $wgDBname );
 229
 230 wfProfileOut( $fname.'-MessageCache' );
 231 wfProfileIn( $fname.'-OutputPage' );
 232
 233 $wgOut = new OutputPage();
 234 wfDebug( "\n\n" );
 235
 236 wfProfileOut( $fname.'-OutputPage' );
 237 wfProfileIn( $fname.'-DateFormatter' );
 238
 239 if ( $wgUseDynamicDates ) {
 240         require_once( 'DateFormatter.php' );
 241         global $wgDateFormatter;
 242         $wgDateFormatter = new DateFormatter;
 243 }
 244
 245 wfProfileOut( $fname.'-DateFormatter' );
 246 wfProfileIn( $fname.'-BlockCache' );
 247
 248 $wgBlockCache = new BlockCache( true );
 249
 250 wfProfileOut( $fname.'-BlockCache' );
 251 wfProfileIn( $fname.'-User' );
 252
 253 # Extension setup functions
 254 # Entries should be added to this variable during the inclusion
 255 # of the extension file. This allows the extension to perform
 256 # any necessary initialisation in the fully initialised environment
 257 foreach ( $wgSkinExtensionFunctions as $func ) {
 258         $func();
 259 }
 260
 261 if( $wgCommandLineMode ) {
 262         # Used for some maintenance scripts; user session cookies can screw things up
 263         # when the database is in an in-between state.
 264         $wgUser = new User();
 265 } else {
 266         $wgUser = User::loadFromSession();
 267 }
 268
 269 wfProfileOut( $fname.'-User' );
 270 wfProfileIn( $fname.'-misc2' );
 271
 272 $wgDeferredUpdateList = array();
 273 $wgLinkCache = new LinkCache();
 274 $wgMagicWords = array();
 275 $wgMwRedir =& MagicWord::get( MAG_REDIRECT );
 276 $wgParserCache = new ParserCache();
 277 $wgParser = new Parser();
 278 $wgOut->setParserOptions( ParserOptions::newFromUser( $wgUser ) );
 279 $wgDBConnections = array();
 280 wfSeedRandom();
 281
 282 # Placeholders in case of DB error
 283 $wgTitle = Title::newFromText( wfMsg( 'badtitle' ) );
 284 $wgArticle = new Article($wgTitle);
 285
 286 wfProfileOut( $fname.'-misc2' );
 287 wfProfileIn( $fname.'-extensions' );
 288
 289 # Extension setup functions
 290 # Entries should be added to this variable during the inclusion
 291 # of the extension file. This allows the extension to perform
 292 # any necessary initialisation in the fully initialised environment
 293 foreach ( $wgExtensionFunctions as $func ) {
 294         $func();
 295 }
 296
 297 $wgFullyInitialised = true;
 298 wfProfileOut( $fname.'-extensions' );
 299 wfProfileOut( $fname );
 300
 301 }
 302 ?>