includes/Setup.php

   1 <?php
   2 # The main wiki script and things like database
   3 # conversion and maintenance scripts all share a
   4 # common setup of including lots of classes and
   5 # setting up a few globals.
   6 #
   7
   8 global $wgProfiling, $wgProfileSampleRate, $wgIP, $wgUseSquid;
   9
  10 if( !isset( $wgProfiling ) )
  11         $wgProfiling = false;
  12
  13 if ( $wgProfiling and (0 == rand() % $wgProfileSampleRate ) ) {
  14         require_once( "Profiling.php" );
  15 } else {
  16         function wfProfileIn( $fn ) {}
  17         function wfProfileOut( $fn = "" ) {}
  18         function wfGetProfilingOutput( $s, $e ) {}
  19         function wfProfileClose() {}
  20 }
  21
  22 /* collect the originating ips */
  23 if( $wgUseSquid && isset( $_SERVER["HTTP_X_FORWARDED_FOR"] ) ) {
  24         # If the web server is behind a reverse proxy, we need to find
  25         # out where our requests are really coming from.
  26         $hopips = array_map( "trim", explode( ',', $_SERVER['HTTP_X_FORWARDED_FOR'] ) );
  27
  28         while(in_array(trim(end($hopips)), $wgSquidServers)){
  29                 array_pop($hopips);
  30         }
  31         $wgIP = trim(end($hopips));
  32 } else {
  33         $wgIP = getenv("REMOTE_ADDR");
  34 }
  35
  36
  37 $fname = "Setup.php";
  38 wfProfileIn( $fname );
  39 global $wgUseDynamicDates;
  40 wfProfileIn( "$fname-includes" );
  41
  42 require_once( "GlobalFunctions.php" );
  43 require_once( "Namespace.php" );
  44 require_once( "RecentChange.php" );
  45 require_once( "Skin.php" );
  46 require_once( "OutputPage.php" );
  47 require_once( "User.php" );
  48 require_once( "LinkCache.php" );
  49 require_once( "Title.php" );
  50 require_once( "Article.php" );
  51 require_once( "MagicWord.php" );
  52 require_once( "memcached-client.php" );
  53 require_once( "Block.php" );
  54 require_once( "SearchEngine.php" );
  55 require_once( "DifferenceEngine.php" );
  56 require_once( "MessageCache.php" );
  57 require_once( "BlockCache.php" );
  58 require_once( "Parser.php" );
  59 require_once( "ParserCache.php" );
  60 require_once( "WebRequest.php" );
  61 $wgRequest = new WebRequest();
  62
  63
  64
  65 wfProfileOut( "$fname-includes" );
  66 wfProfileIn( "$fname-memcached" );
  67 global $wgUser, $wgLang, $wgOut, $wgTitle;
  68 global $wgArticle, $wgDeferredUpdateList, $wgLinkCache;
  69 global $wgMemc, $wgMagicWords, $wgMwRedir, $wgDebugLogFile;
  70 global $wgMessageCache, $wgUseMemCached, $wgUseDatabaseMessages;
  71 global $wgMsgCacheExpiry, $wgDBname, $wgCommandLineMode;
  72 global $wgBlockCache, $wgParserCache, $wgParser;
  73
  74 # Useful debug output
  75 if ( $wgCommandLineMode ) {
  76         # wfDebug( '"' . implode( '"  "', $argv ) . '"' );
  77 } elseif ( function_exists( "getallheaders" ) ) {
  78         wfDebug( "\nStart request\n" );
  79         wfDebug( $_SERVER['REQUEST_METHOD'] . ' ' . $_SERVER['REQUEST_URI'] . "\n" );
  80         $headers = getallheaders();
  81         foreach ($headers as $name => $value) {
  82                 wfDebug( "$name: $value\n" );
  83         }
  84         wfDebug( "\n" );
  85 } else {
  86         wfDebug( $_SERVER['REQUEST_METHOD'] . ' ' . $_SERVER['REQUEST_URI'] . "\n" );
  87 }
  88
  89 # Set up Memcached
  90 #
  91 class MemCachedClientforWiki extends memcached {
  92         function _debugprint( $text ) {
  93                 wfDebug( "memcached: $text\n" );
  94         }
  95 }
  96
  97 # FakeMemCachedClient imitates the API of memcached-client v. 0.1.2.
  98 # It acts as a memcached server with no RAM, that is, all objects are
  99 # cleared the moment they are set. All set operations succeed and all
 100 # get operations return null.
 101
 102 class FakeMemCachedClient {
 103         function add ($key, $val, $exp = 0) { return true; }
 104         function decr ($key, $amt=1) { return null; }
 105         function delete ($key, $time = 0) { return false; }
 106         function disconnect_all () { }
 107         function enable_compress ($enable) { }
 108         function forget_dead_hosts () { }
 109         function get ($key) { return null; }
 110         function get_multi ($keys) { return array_pad(array(), count($keys), null); }
 111         function incr ($key, $amt=1) { return null; }
 112         function replace ($key, $value, $exp=0) { return false; }
 113         function run_command ($sock, $cmd) { return null; }
 114         function set ($key, $value, $exp=0){ return true; }
 115         function set_compress_threshold ($thresh){ }
 116         function set_debug ($dbg) { }
 117         function set_servers ($list) { }
 118 }
 119
 120 if( $wgUseMemCached ) {
 121         $wgMemc = new MemCachedClientforWiki( array('persistant' => true) );
 122         $wgMemc->set_servers( $wgMemCachedServers );
 123         $wgMemc->set_debug( $wgMemCachedDebug );
 124
 125         # Test it to see if it's working
 126         # This is necessary because otherwise wfMsg would be extremely inefficient
 127         if ( !$wgMemc->set( "test", "", 0 ) ) {
 128                 wfDebug( "Memcached failed setup test - connection error?\n" );
 129                 $wgUseMemCached = false;
 130                 $wgMemc = new FakeMemCachedClient();
 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-misc" );
 144
 145 require_once( "languages/Language.php" );
 146
 147 $wgMessageCache = new MessageCache;
 148
 149 $wgLangClass = "Language" . ucfirst( $wgLanguageCode );
 150 if( ! class_exists( $wgLangClass ) || ($wgLanguageCode == "en" && strcasecmp( $wgInputEncoding, "utf-8" ) == 0 ) ) {
 151         require_once( "languages/LanguageUtf8.php" );
 152         $wgLangClass = "LanguageUtf8";
 153 }
 154
 155 $wgLang = new $wgLangClass();
 156 if ( !is_object($wgLang) ) {
 157         print "No language class ($wgLang)\N";
 158 }
 159 $wgMessageCache->initialise( $messageMemc, $wgUseDatabaseMessages, $wgMsgCacheExpiry, $wgDBname );
 160
 161 $wgOut = new OutputPage();
 162 wfDebug( "\n\n" );
 163
 164 if ( $wgUseDynamicDates ) {
 165         require_once( "DateFormatter.php" );
 166         global $wgDateFormatter;
 167         $wgDateFormatter = new DateFormatter;
 168 }
 169
 170 if( !$wgCommandLineMode && ( isset( $_COOKIE[ini_get("session.name")] ) || isset( $_COOKIE["{$wgDBname}Password"] ) ) ) {
 171         User::SetupSession();
 172 }
 173
 174 $wgBlockCache = new BlockCache( true );
 175 if( $wgCommandLineMode ) {
 176         # Used for some maintenance scripts; user session cookies can screw things up
 177         # when the database is in an in-between state.
 178         $wgUser = new User();
 179 } else {
 180         $wgUser = User::loadFromSession();
 181 }
 182 $wgDeferredUpdateList = array();
 183 $wgLinkCache = new LinkCache();
 184 $wgMagicWords = array();
 185 $wgMwRedir =& MagicWord::get( MAG_REDIRECT );
 186 $wgParserCache = new ParserCache();
 187 $wgParser = new Parser();
 188 $wgOut->setParserOptions( ParserOptions::newFromUser( $wgUser ) );
 189
 190 wfProfileOut( "$fname-misc" );
 191 wfProfileOut( $fname );
 192
 193
 194 ?>