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( 'memcached-client.php' );
  57 require_once( 'Block.php' );
  58 require_once( 'SearchEngine.php' );
  59 require_once( 'DifferenceEngine.php' );
  60 require_once( 'MessageCache.php' );
  61 require_once( 'BlockCache.php' );
  62 require_once( 'Parser.php' );
  63 require_once( 'ParserCache.php' );
  64 require_once( 'WebRequest.php' );
  65 require_once( 'LoadBalancer.php' );
  66
  67 $wgRequest = new WebRequest();
  68
  69
  70
  71 wfProfileOut( $fname.'-includes' );
  72 wfProfileIn( $fname.'-memcached' );
  73 global $wgUser, $wgLang, $wgOut, $wgTitle;
  74 global $wgArticle, $wgDeferredUpdateList, $wgLinkCache;
  75 global $wgMemc, $wgMagicWords, $wgMwRedir, $wgDebugLogFile;
  76 global $wgMessageCache, $wgUseMemCached, $wgUseDatabaseMessages;
  77 global $wgMsgCacheExpiry, $wgCommandLineMode;
  78 global $wgBlockCache, $wgParserCache, $wgParser, $wgDBConnections;
  79 global $wgLoadBalancer, $wgDBservers, $wgDebugDumpSql;
  80 global $wgDBserver, $wgDBuser, $wgDBpassword, $wgDBname, $wgDBtype;
  81 global $wgFullyInitialised;
  82
  83 # Useful debug output
  84 if ( $wgCommandLineMode ) {
  85         # wfDebug( '"' . implode( '"  "', $argv ) . '"' );
  86 } elseif ( function_exists( 'getallheaders' ) ) {
  87         wfDebug( "\nStart request\n" );
  88         wfDebug( $_SERVER['REQUEST_METHOD'] . ' ' . $_SERVER['REQUEST_URI'] . "\n" );
  89         $headers = getallheaders();
  90         foreach ($headers as $name => $value) {
  91                 wfDebug( "$name: $value\n" );
  92         }
  93         wfDebug( "\n" );
  94 } else {
  95         wfDebug( $_SERVER['REQUEST_METHOD'] . ' ' . $_SERVER['REQUEST_URI'] . "\n" );
  96 }
  97
  98 # Set up Memcached
  99 #
 100 class MemCachedClientforWiki extends memcached {
 101         function _debugprint( $text ) {
 102                 wfDebug( "memcached: $text\n" );
 103         }
 104 }
 105
 106 # FakeMemCachedClient imitates the API of memcached-client v. 0.1.2.
 107 # It acts as a memcached server with no RAM, that is, all objects are
 108 # cleared the moment they are set. All set operations succeed and all
 109 # get operations return null.
 110
 111 class FakeMemCachedClient {
 112         function add ($key, $val, $exp = 0) { return true; }
 113         function decr ($key, $amt=1) { return null; }
 114         function delete ($key, $time = 0) { return false; }
 115         function disconnect_all () { }
 116         function enable_compress ($enable) { }
 117         function forget_dead_hosts () { }
 118         function get ($key) { return null; }
 119         function get_multi ($keys) { return array_pad(array(), count($keys), null); }
 120         function incr ($key, $amt=1) { return null; }
 121         function replace ($key, $value, $exp=0) { return false; }
 122         function run_command ($sock, $cmd) { return null; }
 123         function set ($key, $value, $exp=0){ return true; }
 124         function set_compress_threshold ($thresh){ }
 125         function set_debug ($dbg) { }
 126         function set_servers ($list) { }
 127 }
 128
 129 if( $wgUseMemCached ) {
 130         $wgMemc = new MemCachedClientforWiki( array('persistant' => true) );
 131         $wgMemc->set_servers( $wgMemCachedServers );
 132         $wgMemc->set_debug( $wgMemCachedDebug );
 133
 134         $messageMemc = &$wgMemc;
 135 } else {
 136         $wgMemc = new FakeMemCachedClient();
 137
 138         # Give the message cache a separate cache in the DB.
 139         # This is a speedup over separately querying every message used
 140         require_once( 'ObjectCache.php' );
 141         $messageMemc = new MediaWikiBagOStuff('objectcache');
 142 }
 143
 144 wfProfileOut( $fname.'-memcached' );
 145 wfProfileIn( $fname.'-SetupSession' );
 146
 147 if( !$wgCommandLineMode && ( isset( $_COOKIE[ini_get('session.name')] ) || isset( $_COOKIE[$wgDBname.'Password'] ) ) ) {
 148         User::SetupSession();
 149         $wgSessionStarted = true;
 150 } else {
 151         $wgSessionStarted = false;
 152 }
 153
 154 wfProfileOut( $fname.'-SetupSession' );
 155 wfProfileIn( $fname.'-database' );
 156
 157 if ( !$wgDBservers ) {
 158         $wgDBservers = array(array(
 159                 'host' => $wgDBserver,
 160                 'user' => $wgDBuser,
 161                 'password' => $wgDBpassword,
 162                 'dbname' => $wgDBname,
 163                 'type' => $wgDBtype,
 164                 'load' => 1,
 165                 'flags' => ($wgDebugDumpSql ? DBO_DEBUG : 0) | DBO_DEFAULT
 166         ));
 167 }
 168 $wgLoadBalancer = LoadBalancer::newFromParams( $wgDBservers );
 169 $wgLoadBalancer->loadMasterPos();
 170
 171 wfProfileOut( $fname.'-database' );
 172 wfProfileIn( $fname.'-language' );
 173 require_once( 'languages/Language.php' );
 174
 175 $wgMessageCache = new MessageCache;
 176
 177 $wgLangClass = 'Language' . ucfirst( $wgLanguageCode );
 178 if( ! class_exists( $wgLangClass ) || ($wgLanguageCode == 'en' && !$wgUseLatin1) ) {
 179         # Default to English/UTF-8
 180         require_once( 'languages/LanguageUtf8.php' );
 181         $wgLangClass = 'LanguageUtf8';
 182 }
 183
 184 $wgLang = new $wgLangClass();
 185 if ( !is_object($wgLang) ) {
 186         print "No language class ($wgLang)\N";
 187 }
 188
 189 if( $wgUseLatin1 && $wgLanguageCode != 'en' ) {
 190         # For non-UTF-8 non-English.
 191         require_once( 'languages/LanguageLatin1.php' );
 192         $xxx = new LanguageLatin1( $wgLang );
 193         unset( $wgLang );
 194         $wgLang = $xxx;
 195 }
 196 wfProfileOut( $fname.'-language' );
 197 wfProfileIn( $fname.'-MessageCache' );
 198
 199 $wgMessageCache->initialise( $messageMemc, $wgUseDatabaseMessages, $wgMsgCacheExpiry, $wgDBname );
 200
 201 wfProfileOut( $fname.'-MessageCache' );
 202 wfProfileIn( $fname.'-OutputPage' );
 203
 204 $wgOut = new OutputPage();
 205 wfDebug( "\n\n" );
 206
 207 wfProfileOut( $fname.'-OutputPage' );
 208 wfProfileIn( $fname.'-DateFormatter' );
 209
 210 if ( $wgUseDynamicDates ) {
 211         require_once( 'DateFormatter.php' );
 212         global $wgDateFormatter;
 213         $wgDateFormatter = new DateFormatter;
 214 }
 215
 216 wfProfileOut( $fname.'-DateFormatter' );
 217 wfProfileIn( $fname.'-BlockCache' );
 218
 219 $wgBlockCache = new BlockCache( true );
 220
 221 wfProfileOut( $fname.'-BlockCache' );
 222 wfProfileIn( $fname.'-User' );
 223
 224 if( $wgCommandLineMode ) {
 225         # Used for some maintenance scripts; user session cookies can screw things up
 226         # when the database is in an in-between state.
 227         $wgUser = new User();
 228 } else {
 229         $wgUser = User::loadFromSession();
 230 }
 231
 232 wfProfileOut( $fname.'-User' );
 233 wfProfileIn( $fname.'-misc' );
 234
 235 $wgDeferredUpdateList = array();
 236 $wgLinkCache = new LinkCache();
 237 $wgMagicWords = array();
 238 $wgMwRedir =& MagicWord::get( MAG_REDIRECT );
 239 $wgParserCache = new ParserCache();
 240 $wgParser = new Parser();
 241 $wgOut->setParserOptions( ParserOptions::newFromUser( $wgUser ) );
 242 $wgDBConnections = array();
 243 wfSeedRandom();
 244
 245 # Placeholders in case of DB error
 246 $wgTitle = Title::newFromText( wfMsg( 'badtitle' ) );
 247 $wgArticle = new Article($wgTitle);
 248
 249 wfProfileOut( $fname.'-misc' );
 250 wfProfileIn( $fname.'-extensions' );
 251
 252 # Extension setup functions
 253 # Entries should be added to this variable during the inclusion
 254 # of the extension file. This allows the extension to perform
 255 # any necessary initialisation in the fully initialised environment
 256 foreach ( $wgExtensionFunctions as $func ) {
 257         $func();
 258 }
 259
 260 $wgFullyInitialised = true;
 261 wfProfileOut( $fname.'-extensions' );
 262 wfProfileOut( $fname );
 263
 264 }
 265 ?>