includes/Setup.php

   1 <?php
   2
   3 # This file is not a valid entry point, perform no further processing unless MEDIAWIKI is defined
   4 if( defined( "MEDIAWIKI" ) ) {
   5
   6 # The main wiki script and things like database
   7 # conversion and maintenance scripts all share a
   8 # common setup of including lots of classes and
   9 # setting up a few globals.
  10 #
  11
  12 global $wgProfiling, $wgProfileSampleRate, $wgIP, $wgUseSquid;
  13
  14 if( !isset( $wgProfiling ) )
  15         $wgProfiling = false;
  16
  17 if ( $wgProfiling and (0 == rand() % $wgProfileSampleRate ) ) {
  18         require_once( 'Profiling.php' );
  19 } else {
  20         function wfProfileIn( $fn = '' ) {}
  21         function wfProfileOut( $fn = '' ) {}
  22         function wfGetProfilingOutput( $s, $e ) {}
  23         function wfProfileClose() {}
  24 }
  25
  26 /* collect the originating ips */
  27 if( $wgUseSquid && isset( $_SERVER['HTTP_X_FORWARDED_FOR'] ) ) {
  28         # If the web server is behind a reverse proxy, we need to find
  29         # out where our requests are really coming from.
  30         $hopips = array_map( 'trim', explode( ',', $_SERVER['HTTP_X_FORWARDED_FOR'] ) );
  31
  32         while(in_array(trim(end($hopips)), $wgSquidServers)){
  33                 array_pop($hopips);
  34         }
  35         $wgIP = trim(end($hopips));
  36 } else {
  37         $wgIP = getenv('REMOTE_ADDR');
  38 }
  39
  40
  41 $fname = 'Setup.php';
  42 wfProfileIn( $fname );
  43 global $wgUseDynamicDates;
  44 wfProfileIn( $fname.'-includes' );
  45
  46 require_once( 'GlobalFunctions.php' );
  47 require_once( 'Namespace.php' );
  48 require_once( 'RecentChange.php' );
  49 require_once( 'User.php' );
  50 require_once( 'Skin.php' );
  51 require_once( 'OutputPage.php' );
  52 require_once( 'LinkCache.php' );
  53 require_once( 'Title.php' );
  54 require_once( 'Article.php' );
  55 require_once( 'MagicWord.php' );
  56 require_once( 'Block.php' );
  57 require_once( 'MessageCache.php' );
  58 require_once( 'BlockCache.php' );
  59 require_once( 'Parser.php' );
  60 require_once( 'ParserCache.php' );
  61 require_once( 'WebRequest.php' );
  62 require_once( 'LoadBalancer.php' );
  63
  64 $wgRequest = new WebRequest();
  65
  66
  67
  68 wfProfileOut( $fname.'-includes' );
  69 wfProfileIn( $fname.'-misc1' );
  70 global $wgUser, $wgLang, $wgOut, $wgTitle;
  71 global $wgArticle, $wgDeferredUpdateList, $wgLinkCache;
  72 global $wgMemc, $wgMagicWords, $wgMwRedir, $wgDebugLogFile;
  73 global $wgMessageCache, $wgUseMemCached, $wgUseDatabaseMessages;
  74 global $wgMsgCacheExpiry, $wgCommandLineMode;
  75 global $wgBlockCache, $wgParserCache, $wgParser, $wgDBConnections;
  76 global $wgLoadBalancer, $wgDBservers, $wgDebugDumpSql;
  77 global $wgDBserver, $wgDBuser, $wgDBpassword, $wgDBname, $wgDBtype;
  78 global $wgUseOldExistenceCheck, $wgEnablePersistentLC;
  79
  80 global $wgFullyInitialised;
  81
  82 # Useful debug output
  83 if ( $wgCommandLineMode ) {
  84         # wfDebug( '"' . implode( '"  "', $argv ) . '"' );
  85 } elseif ( function_exists( 'getallheaders' ) ) {
  86         wfDebug( "\nStart request\n" );
  87         wfDebug( $_SERVER['REQUEST_METHOD'] . ' ' . $_SERVER['REQUEST_URI'] . "\n" );
  88         $headers = getallheaders();
  89         foreach ($headers as $name => $value) {
  90                 wfDebug( "$name: $value\n" );
  91         }
  92         wfDebug( "\n" );
  93 } else {
  94         wfDebug( $_SERVER['REQUEST_METHOD'] . ' ' . $_SERVER['REQUEST_URI'] . "\n" );
  95 }
  96
  97 # Disable linkscc except if the old existence check method is enabled
  98 if (!$wgUseOldExistenceCheck) {
  99         $wgEnablePersistentLC = false;
 100 }
 101
 102 wfProfileOut( $fname.'-misc1' );
 103 wfProfileIn( $fname.'-memcached' );
 104
 105 # FakeMemCachedClient imitates the API of memcached-client v. 0.1.2.
 106 # It acts as a memcached server with no RAM, that is, all objects are
 107 # cleared the moment they are set. All set operations succeed and all
 108 # get operations return null.
 109
 110 if( $wgUseMemCached ) {
 111         # Set up Memcached
 112         #
 113         require_once( 'memcached-client.php' );
 114         class MemCachedClientforWiki extends memcached {
 115                 function _debugprint( $text ) {
 116                         wfDebug( "memcached: $text\n" );
 117                 }
 118         }
 119
 120         $wgMemc = new MemCachedClientforWiki( array('persistant' => true) );
 121         $wgMemc->set_servers( $wgMemCachedServers );
 122         $wgMemc->set_debug( $wgMemCachedDebug );
 123
 124         $messageMemc = &$wgMemc;
 125 } else {
 126         class FakeMemCachedClient {
 127                 function add ($key, $val, $exp = 0) { return true; }
 128                 function decr ($key, $amt=1) { return null; }
 129                 function delete ($key, $time = 0) { return false; }
 130                 function disconnect_all () { }
 131                 function enable_compress ($enable) { }
 132                 function forget_dead_hosts () { }
 133                 function get ($key) { return null; }
 134                 function get_multi ($keys) { return array_pad(array(), count($keys), null); }
 135                 function incr ($key, $amt=1) { return null; }
 136                 function replace ($key, $value, $exp=0) { return false; }
 137                 function run_command ($sock, $cmd) { return null; }
 138                 function set ($key, $value, $exp=0){ return true; }
 139                 function set_compress_threshold ($thresh){ }
 140                 function set_debug ($dbg) { }
 141                 function set_servers ($list) { }
 142         }
 143         $wgMemc = new FakeMemCachedClient();
 144
 145         # Give the message cache a separate cache in the DB.
 146         # This is a speedup over separately querying every message used
 147         require_once( 'ObjectCache.php' );
 148         $messageMemc = new MediaWikiBagOStuff('objectcache');
 149 }
 150
 151 wfProfileOut( $fname.'-memcached' );
 152 wfProfileIn( $fname.'-SetupSession' );
 153
 154 if( !$wgCommandLineMode && ( isset( $_COOKIE[ini_get('session.name')] ) || isset( $_COOKIE[$wgDBname.'Password'] ) ) ) {
 155         User::SetupSession();
 156         $wgSessionStarted = true;
 157 } else {
 158         $wgSessionStarted = false;
 159 }
 160
 161 wfProfileOut( $fname.'-SetupSession' );
 162 wfProfileIn( $fname.'-database' );
 163
 164 if ( !$wgDBservers ) {
 165         $wgDBservers = array(array(
 166                 'host' => $wgDBserver,
 167                 'user' => $wgDBuser,
 168                 'password' => $wgDBpassword,
 169                 'dbname' => $wgDBname,
 170                 'type' => $wgDBtype,
 171                 'load' => 1,
 172                 'flags' => ($wgDebugDumpSql ? DBO_DEBUG : 0) | DBO_DEFAULT
 173         ));
 174 }
 175 $wgLoadBalancer = LoadBalancer::newFromParams( $wgDBservers );
 176 $wgLoadBalancer->loadMasterPos();
 177
 178 wfProfileOut( $fname.'-database' );
 179 wfProfileIn( $fname.'-language' );
 180 require_once( 'languages/Language.php' );
 181
 182 $wgMessageCache = new MessageCache;
 183
 184 $wgLangClass = 'Language' . ucfirst( $wgLanguageCode );
 185 if( ! class_exists( $wgLangClass ) || ($wgLanguageCode == 'en' && !$wgUseLatin1) ) {
 186         # Default to English/UTF-8
 187         require_once( 'languages/LanguageUtf8.php' );
 188         $wgLangClass = 'LanguageUtf8';
 189 }
 190
 191 $wgLang = new $wgLangClass();
 192 if ( !is_object($wgLang) ) {
 193         print "No language class ($wgLang)\N";
 194 }
 195
 196 if( $wgUseLatin1 && $wgLanguageCode != 'en' ) {
 197         # For non-UTF-8 non-English.
 198         require_once( 'languages/LanguageLatin1.php' );
 199         $xxx = new LanguageLatin1( $wgLang );
 200         unset( $wgLang );
 201         $wgLang = $xxx;
 202 }
 203 wfProfileOut( $fname.'-language' );
 204 wfProfileIn( $fname.'-MessageCache' );
 205
 206 $wgMessageCache->initialise( $messageMemc, $wgUseDatabaseMessages, $wgMsgCacheExpiry, $wgDBname );
 207
 208 wfProfileOut( $fname.'-MessageCache' );
 209 wfProfileIn( $fname.'-OutputPage' );
 210
 211 $wgOut = new OutputPage();
 212 wfDebug( "\n\n" );
 213
 214 wfProfileOut( $fname.'-OutputPage' );
 215 wfProfileIn( $fname.'-DateFormatter' );
 216
 217 if ( $wgUseDynamicDates ) {
 218         require_once( 'DateFormatter.php' );
 219         global $wgDateFormatter;
 220         $wgDateFormatter = new DateFormatter;
 221 }
 222
 223 wfProfileOut( $fname.'-DateFormatter' );
 224 wfProfileIn( $fname.'-BlockCache' );
 225
 226 $wgBlockCache = new BlockCache( true );
 227
 228 wfProfileOut( $fname.'-BlockCache' );
 229 wfProfileIn( $fname.'-User' );
 230
 231 if( $wgCommandLineMode ) {
 232         # Used for some maintenance scripts; user session cookies can screw things up
 233         # when the database is in an in-between state.
 234         $wgUser = new User();
 235 } else {
 236         $wgUser = User::loadFromSession();
 237 }
 238
 239 wfProfileOut( $fname.'-User' );
 240 wfProfileIn( $fname.'-misc2' );
 241
 242 $wgDeferredUpdateList = array();
 243 $wgLinkCache = new LinkCache();
 244 $wgMagicWords = array();
 245 $wgMwRedir =& MagicWord::get( MAG_REDIRECT );
 246 $wgParserCache = new ParserCache();
 247 $wgParser = new Parser();
 248 $wgOut->setParserOptions( ParserOptions::newFromUser( $wgUser ) );
 249 $wgDBConnections = array();
 250 wfSeedRandom();
 251
 252 # Placeholders in case of DB error
 253 $wgTitle = Title::newFromText( wfMsg( 'badtitle' ) );
 254 $wgArticle = new Article($wgTitle);
 255
 256 wfProfileOut( $fname.'-misc2' );
 257 wfProfileIn( $fname.'-extensions' );
 258
 259 # Extension setup functions
 260 # Entries should be added to this variable during the inclusion
 261 # of the extension file. This allows the extension to perform
 262 # any necessary initialisation in the fully initialised environment
 263 foreach ( $wgExtensionFunctions as $func ) {
 264         $func();
 265 }
 266
 267 $wgFullyInitialised = true;
 268 wfProfileOut( $fname.'-extensions' );
 269 wfProfileOut( $fname );
 270
 271 }
 272 ?>