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 } elseif ( $wgUseTurckShm ) {
 126         # Turck shared memory
 127         #
 128         require_once( 'ObjectCache.php' );
 129         $wgMemc = new TurckBagOStuff;
 130         $messageMemc = &$wgMemc;
 131 } else {
 132         # No shared memory
 133         #
 134         class FakeMemCachedClient {
 135                 function add ($key, $val, $exp = 0) { return true; }
 136                 function decr ($key, $amt=1) { return null; }
 137                 function delete ($key, $time = 0) { return false; }
 138                 function disconnect_all () { }
 139                 function enable_compress ($enable) { }
 140                 function forget_dead_hosts () { }
 141                 function get ($key) { return null; }
 142                 function get_multi ($keys) { return array_pad(array(), count($keys), null); }
 143                 function incr ($key, $amt=1) { return null; }
 144                 function replace ($key, $value, $exp=0) { return false; }
 145                 function run_command ($sock, $cmd) { return null; }
 146                 function set ($key, $value, $exp=0){ return true; }
 147                 function set_compress_threshold ($thresh){ }
 148                 function set_debug ($dbg) { }
 149                 function set_servers ($list) { }
 150         }
 151         $wgMemc = new FakeMemCachedClient();
 152
 153         # Give the message cache a separate cache in the DB.
 154         # This is a speedup over separately querying every message used
 155         require_once( 'ObjectCache.php' );
 156         $messageMemc = new MediaWikiBagOStuff('objectcache');
 157 }
 158
 159 wfProfileOut( $fname.'-memcached' );
 160 wfProfileIn( $fname.'-SetupSession' );
 161
 162 if( !$wgCommandLineMode && ( isset( $_COOKIE[ini_get('session.name')] ) || isset( $_COOKIE[$wgDBname.'Password'] ) ) ) {
 163         User::SetupSession();
 164         $wgSessionStarted = true;
 165 } else {
 166         $wgSessionStarted = false;
 167 }
 168
 169 wfProfileOut( $fname.'-SetupSession' );
 170 wfProfileIn( $fname.'-database' );
 171
 172 if ( !$wgDBservers ) {
 173         $wgDBservers = array(array(
 174                 'host' => $wgDBserver,
 175                 'user' => $wgDBuser,
 176                 'password' => $wgDBpassword,
 177                 'dbname' => $wgDBname,
 178                 'type' => $wgDBtype,
 179                 'load' => 1,
 180                 'flags' => ($wgDebugDumpSql ? DBO_DEBUG : 0) | DBO_DEFAULT
 181         ));
 182 }
 183 $wgLoadBalancer = LoadBalancer::newFromParams( $wgDBservers );
 184 $wgLoadBalancer->loadMasterPos();
 185
 186 wfProfileOut( $fname.'-database' );
 187 wfProfileIn( $fname.'-language' );
 188 require_once( 'languages/Language.php' );
 189
 190 $wgMessageCache = new MessageCache;
 191
 192 $wgLangClass = 'Language' . ucfirst( $wgLanguageCode );
 193 if( ! class_exists( $wgLangClass ) || ($wgLanguageCode == 'en' && !$wgUseLatin1) ) {
 194         # Default to English/UTF-8
 195         require_once( 'languages/LanguageUtf8.php' );
 196         $wgLangClass = 'LanguageUtf8';
 197 }
 198
 199 $wgLang = new $wgLangClass();
 200 if ( !is_object($wgLang) ) {
 201         print "No language class ($wgLang)\N";
 202 }
 203
 204 if( $wgUseLatin1 && $wgLanguageCode != 'en' ) {
 205         # For non-UTF-8 non-English.
 206         require_once( 'languages/LanguageLatin1.php' );
 207         $xxx = new LanguageLatin1( $wgLang );
 208         unset( $wgLang );
 209         $wgLang = $xxx;
 210 }
 211 wfProfileOut( $fname.'-language' );
 212 wfProfileIn( $fname.'-MessageCache' );
 213
 214 $wgMessageCache->initialise( $messageMemc, $wgUseDatabaseMessages, $wgMsgCacheExpiry, $wgDBname );
 215
 216 wfProfileOut( $fname.'-MessageCache' );
 217 wfProfileIn( $fname.'-OutputPage' );
 218
 219 $wgOut = new OutputPage();
 220 wfDebug( "\n\n" );
 221
 222 wfProfileOut( $fname.'-OutputPage' );
 223 wfProfileIn( $fname.'-DateFormatter' );
 224
 225 if ( $wgUseDynamicDates ) {
 226         require_once( 'DateFormatter.php' );
 227         global $wgDateFormatter;
 228         $wgDateFormatter = new DateFormatter;
 229 }
 230
 231 wfProfileOut( $fname.'-DateFormatter' );
 232 wfProfileIn( $fname.'-BlockCache' );
 233
 234 $wgBlockCache = new BlockCache( true );
 235
 236 wfProfileOut( $fname.'-BlockCache' );
 237 wfProfileIn( $fname.'-User' );
 238
 239 # Extension setup functions
 240 # Entries should be added to this variable during the inclusion
 241 # of the extension file. This allows the extension to perform
 242 # any necessary initialisation in the fully initialised environment
 243 foreach ( $wgSkinExtensionFunctions as $func ) {
 244         $func();
 245 }
 246
 247 if( $wgCommandLineMode ) {
 248         # Used for some maintenance scripts; user session cookies can screw things up
 249         # when the database is in an in-between state.
 250         $wgUser = new User();
 251 } else {
 252         $wgUser = User::loadFromSession();
 253 }
 254
 255 wfProfileOut( $fname.'-User' );
 256 wfProfileIn( $fname.'-misc2' );
 257
 258 $wgDeferredUpdateList = array();
 259 $wgLinkCache = new LinkCache();
 260 $wgMagicWords = array();
 261 $wgMwRedir =& MagicWord::get( MAG_REDIRECT );
 262 $wgParserCache = new ParserCache();
 263 $wgParser = new Parser();
 264 $wgOut->setParserOptions( ParserOptions::newFromUser( $wgUser ) );
 265 $wgDBConnections = array();
 266 wfSeedRandom();
 267
 268 # Placeholders in case of DB error
 269 $wgTitle = Title::newFromText( wfMsg( 'badtitle' ) );
 270 $wgArticle = new Article($wgTitle);
 271
 272 wfProfileOut( $fname.'-misc2' );
 273 wfProfileIn( $fname.'-extensions' );
 274
 275 # Extension setup functions
 276 # Entries should be added to this variable during the inclusion
 277 # of the extension file. This allows the extension to perform
 278 # any necessary initialisation in the fully initialised environment
 279 foreach ( $wgExtensionFunctions as $func ) {
 280         $func();
 281 }
 282
 283 $wgFullyInitialised = true;
 284 wfProfileOut( $fname.'-extensions' );
 285 wfProfileOut( $fname );
 286
 287 }
 288 ?>