includes/Setup.php

   1 <?php
   2 if( defined( "MEDIAWIKI" ) ) {
   3
   4 # The main wiki script and things like database
   5 # conversion and maintenance scripts all share a
   6 # common setup of including lots of classes and
   7 # setting up a few globals.
   8 #
   9
  10 global $wgProfiling, $wgProfileSampleRate, $wgIP, $wgUseSquid;
  11
  12 if( !isset( $wgProfiling ) )
  13         $wgProfiling = false;
  14
  15 if ( $wgProfiling and (0 == rand() % $wgProfileSampleRate ) ) {
  16         require_once( 'Profiling.php' );
  17 } else {
  18         function wfProfileIn( $fn = '' ) {}
  19         function wfProfileOut( $fn = '' ) {}
  20         function wfGetProfilingOutput( $s, $e ) {}
  21         function wfProfileClose() {}
  22 }
  23
  24 /* collect the originating ips */
  25 if( $wgUseSquid && isset( $_SERVER['HTTP_X_FORWARDED_FOR'] ) ) {
  26         # If the web server is behind a reverse proxy, we need to find
  27         # out where our requests are really coming from.
  28         $hopips = array_map( 'trim', explode( ',', $_SERVER['HTTP_X_FORWARDED_FOR'] ) );
  29
  30         while(in_array(trim(end($hopips)), $wgSquidServers)){
  31                 array_pop($hopips);
  32         }
  33         $wgIP = trim(end($hopips));
  34 } else {
  35         $wgIP = getenv('REMOTE_ADDR');
  36 }
  37
  38
  39 $fname = 'Setup.php';
  40 wfProfileIn( $fname );
  41 global $wgUseDynamicDates;
  42 wfProfileIn( $fname.'-includes' );
  43
  44 require_once( 'GlobalFunctions.php' );
  45 require_once( 'Namespace.php' );
  46 require_once( 'RecentChange.php' );
  47 require_once( 'User.php' );
  48 require_once( 'Skin.php' );
  49 require_once( 'OutputPage.php' );
  50 require_once( 'LinkCache.php' );
  51 require_once( 'Title.php' );
  52 require_once( 'Article.php' );
  53 require_once( 'MagicWord.php' );
  54 require_once( 'memcached-client.php' );
  55 require_once( 'Block.php' );
  56 require_once( 'SearchEngine.php' );
  57 require_once( 'DifferenceEngine.php' );
  58 require_once( 'MessageCache.php' );
  59 require_once( 'BlockCache.php' );
  60 require_once( 'Parser.php' );
  61 require_once( 'ParserCache.php' );
  62 require_once( 'WebRequest.php' );
  63 require_once( 'LoadBalancer.php' );
  64
  65 $wgRequest = new WebRequest();
  66
  67
  68
  69 wfProfileOut( $fname.'-includes' );
  70 wfProfileIn( $fname.'-memcached' );
  71 global $wgUser, $wgLang, $wgOut, $wgTitle;
  72 global $wgArticle, $wgDeferredUpdateList, $wgLinkCache;
  73 global $wgMemc, $wgMagicWords, $wgMwRedir, $wgDebugLogFile;
  74 global $wgMessageCache, $wgUseMemCached, $wgUseDatabaseMessages;
  75 global $wgMsgCacheExpiry, $wgCommandLineMode;
  76 global $wgBlockCache, $wgParserCache, $wgParser, $wgDBConnections;
  77 global $wgLoadBalancer, $wgDBservers, $wgDebugDumpSql;
  78 global $wgDBserver, $wgDBuser, $wgDBpassword, $wgDBname, $wgDBtype;
  79 global $wgFullyInitialised;
  80
  81 # Useful debug output
  82 if ( $wgCommandLineMode ) {
  83         # wfDebug( '"' . implode( '"  "', $argv ) . '"' );
  84 } elseif ( function_exists( 'getallheaders' ) ) {
  85         wfDebug( "\nStart request\n" );
  86         wfDebug( $_SERVER['REQUEST_METHOD'] . ' ' . $_SERVER['REQUEST_URI'] . "\n" );
  87         $headers = getallheaders();
  88         foreach ($headers as $name => $value) {
  89                 wfDebug( "$name: $value\n" );
  90         }
  91         wfDebug( "\n" );
  92 } else {
  93         wfDebug( $_SERVER['REQUEST_METHOD'] . ' ' . $_SERVER['REQUEST_URI'] . "\n" );
  94 }
  95
  96 # Set up Memcached
  97 #
  98 class MemCachedClientforWiki extends memcached {
  99         function _debugprint( $text ) {
 100                 wfDebug( "memcached: $text\n" );
 101         }
 102 }
 103
 104 # FakeMemCachedClient imitates the API of memcached-client v. 0.1.2.
 105 # It acts as a memcached server with no RAM, that is, all objects are
 106 # cleared the moment they are set. All set operations succeed and all
 107 # get operations return null.
 108
 109 class FakeMemCachedClient {
 110         function add ($key, $val, $exp = 0) { return true; }
 111         function decr ($key, $amt=1) { return null; }
 112         function delete ($key, $time = 0) { return false; }
 113         function disconnect_all () { }
 114         function enable_compress ($enable) { }
 115         function forget_dead_hosts () { }
 116         function get ($key) { return null; }
 117         function get_multi ($keys) { return array_pad(array(), count($keys), null); }
 118         function incr ($key, $amt=1) { return null; }
 119         function replace ($key, $value, $exp=0) { return false; }
 120         function run_command ($sock, $cmd) { return null; }
 121         function set ($key, $value, $exp=0){ return true; }
 122         function set_compress_threshold ($thresh){ }
 123         function set_debug ($dbg) { }
 124         function set_servers ($list) { }
 125 }
 126
 127 if( $wgUseMemCached ) {
 128         $wgMemc = new MemCachedClientforWiki( array('persistant' => true) );
 129         $wgMemc->set_servers( $wgMemCachedServers );
 130         $wgMemc->set_debug( $wgMemCachedDebug );
 131
 132         $messageMemc = &$wgMemc;
 133 } else {
 134         $wgMemc = new FakeMemCachedClient();
 135
 136         # Give the message cache a separate cache in the DB.
 137         # This is a speedup over separately querying every message used
 138         require_once( 'ObjectCache.php' );
 139         $messageMemc = new MediaWikiBagOStuff('objectcache');
 140 }
 141
 142 wfProfileOut( $fname.'-memcached' );
 143 wfProfileIn( $fname.'-SetupSession' );
 144
 145 if( !$wgCommandLineMode && ( isset( $_COOKIE[ini_get('session.name')] ) || isset( $_COOKIE[$wgDBname.'Password'] ) ) ) {
 146         User::SetupSession();
 147         $wgSessionStarted = true;
 148 } else {
 149         $wgSessionStarted = false;
 150 }
 151
 152 wfProfileOut( $fname.'-SetupSession' );
 153 wfProfileIn( $fname.'-database' );
 154
 155 if ( !$wgDBservers ) {
 156         $wgDBservers = array(array(
 157                 'host' => $wgDBserver,
 158                 'user' => $wgDBuser,
 159                 'password' => $wgDBpassword,
 160                 'dbname' => $wgDBname,
 161                 'type' => $wgDBtype,
 162                 'load' => 1,
 163                 'flags' => ($wgDebugDumpSql ? DBO_DEBUG : 0) | DBO_DEFAULT
 164         ));
 165 }
 166 $wgLoadBalancer = LoadBalancer::newFromParams( $wgDBservers );
 167 $wgLoadBalancer->loadMasterPos();
 168
 169 wfProfileOut( $fname.'-database' );
 170 wfProfileIn( $fname.'-language' );
 171 require_once( 'languages/Language.php' );
 172
 173 $wgMessageCache = new MessageCache;
 174
 175 $wgLangClass = 'Language' . ucfirst( $wgLanguageCode );
 176 if( ! class_exists( $wgLangClass ) || ($wgLanguageCode == 'en' && !$wgUseLatin1) ) {
 177         # Default to English/UTF-8
 178         require_once( 'languages/LanguageUtf8.php' );
 179         $wgLangClass = 'LanguageUtf8';
 180 }
 181
 182 $wgLang = new $wgLangClass();
 183 if ( !is_object($wgLang) ) {
 184         print "No language class ($wgLang)\N";
 185 }
 186
 187 if( $wgUseLatin1 && $wgLanguageCode != 'en' ) {
 188         # For non-UTF-8 non-English.
 189         require_once( 'languages/LanguageLatin1.php' );
 190         $xxx = new LanguageLatin1( $wgLang );
 191         unset( $wgLang );
 192         $wgLang = $xxx;
 193 }
 194 wfProfileOut( $fname.'-language' );
 195 wfProfileIn( $fname.'-MessageCache' );
 196
 197 $wgMessageCache->initialise( $messageMemc, $wgUseDatabaseMessages, $wgMsgCacheExpiry, $wgDBname );
 198
 199 wfProfileOut( $fname.'-MessageCache' );
 200 wfProfileIn( $fname.'-OutputPage' );
 201
 202 $wgOut = new OutputPage();
 203 wfDebug( "\n\n" );
 204
 205 wfProfileOut( $fname.'-OutputPage' );
 206 wfProfileIn( $fname.'-DateFormatter' );
 207
 208 if ( $wgUseDynamicDates ) {
 209         require_once( 'DateFormatter.php' );
 210         global $wgDateFormatter;
 211         $wgDateFormatter = new DateFormatter;
 212 }
 213
 214 wfProfileOut( $fname.'-DateFormatter' );
 215 wfProfileIn( $fname.'-BlockCache' );
 216
 217 $wgBlockCache = new BlockCache( true );
 218
 219 wfProfileOut( $fname.'-BlockCache' );
 220 wfProfileIn( $fname.'-User' );
 221
 222 if( $wgCommandLineMode ) {
 223         # Used for some maintenance scripts; user session cookies can screw things up
 224         # when the database is in an in-between state.
 225         $wgUser = new User();
 226 } else {
 227         $wgUser = User::loadFromSession();
 228 }
 229
 230 wfProfileOut( $fname.'-User' );
 231 wfProfileIn( $fname.'-misc' );
 232
 233 $wgDeferredUpdateList = array();
 234 $wgLinkCache = new LinkCache();
 235 $wgMagicWords = array();
 236 $wgMwRedir =& MagicWord::get( MAG_REDIRECT );
 237 $wgParserCache = new ParserCache();
 238 $wgParser = new Parser();
 239 $wgOut->setParserOptions( ParserOptions::newFromUser( $wgUser ) );
 240 $wgDBConnections = array();
 241 wfSeedRandom();
 242
 243 # Placeholders in case of DB error
 244 $wgTitle = Title::newFromText( wfMsg( 'badtitle' ) );
 245 $wgArticle = new Article($wgTitle);
 246
 247 wfProfileOut( $fname.'-misc' );
 248 wfProfileIn( $fname.'-extensions' );
 249
 250 # Extension setup functions
 251 # Entries should be added to this variable during the inclusion
 252 # of the extension file. This allows the extension to perform
 253 # any necessary initialisation in the fully initialised environment
 254 foreach ( $wgExtensionFunctions as $func ) {
 255         $func();
 256 }
 257
 258 $wgFullyInitialised = true;
 259 wfProfileOut( $fname.'-extensions' );
 260 wfProfileOut( $fname );
 261
 262 }
 263 ?>