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         include_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 include_once( "GlobalFunctions.php" );
  43 include_once( "Namespace.php" );
  44 include_once( "RecentChange.php" );
  45 include_once( "Skin.php" );
  46 include_once( "OutputPage.php" );
  47 include_once( "User.php" );
  48 include_once( "LinkCache.php" );
  49 include_once( "Title.php" );
  50 include_once( "Article.php" );
  51 include_once( "MagicWord.php" );
  52 include_once( "memcached-client.php" );
  53 include_once( "Block.php" );
  54 include_once( "SearchEngine.php" );
  55 include_once( "DifferenceEngine.php" );
  56 include_once( "MessageCache.php" );
  57 include_once( "BlockCache.php" );
  58 include_once( "Parser.php" );
  59 include_once( "ParserCache.php" );
  60 include_once( "WebRequest.php" );
  61 $wgRequest = new WebRequest();
  62
  63
  64 wfProfileOut( "$fname-includes" );
  65 wfProfileIn( "$fname-memcached" );
  66 global $wgUser, $wgLang, $wgOut, $wgTitle;
  67 global $wgArticle, $wgDeferredUpdateList, $wgLinkCache;
  68 global $wgMemc, $wgMagicWords, $wgMwRedir, $wgDebugLogFile;
  69 global $wgMessageCache, $wgUseMemCached, $wgUseDatabaseMessages;
  70 global $wgMsgCacheExpiry, $wgDBname, $wgCommandLineMode;
  71 global $wgBlockCache, $wgParserCache, $wgParser;
  72
  73 # Useful debug output
  74 if ( $wgCommandLineMode ) {
  75         wfDebug( '"' . implode( '"  "', $argv ) . '"' );
  76 } elseif ( function_exists( "getallheaders" ) ) {
  77         wfDebug( "\nStart request\n" );
  78         wfDebug( $_SERVER['REQUEST_METHOD'] . ' ' . $_SERVER['REQUEST_URI'] . "\n" );
  79         $headers = getallheaders();
  80         foreach ($headers as $name => $value) {
  81                 wfDebug( "$name: $value\n" );
  82         }
  83         wfDebug( "\n" );
  84 } else {
  85         wfDebug( $_SERVER['REQUEST_METHOD'] . ' ' . $_SERVER['REQUEST_URI'] . "\n" );
  86 }
  87
  88 # Set up Memcached
  89 #
  90 class MemCachedClientforWiki extends memcached {
  91         function _debugprint( $text ) {
  92                 wfDebug( "memcached: $text\n" );
  93         }
  94 }
  95
  96 # FakeMemCachedClient imitates the API of memcached-client v. 0.1.2.
  97 # It acts as a memcached server with no RAM, that is, all objects are
  98 # cleared the moment they are set. All set operations succeed and all
  99 # get operations return null.
 100
 101 class FakeMemCachedClient {
 102         function add ($key, $val, $exp = 0) { return true; }
 103         function decr ($key, $amt=1) { return null; }
 104         function delete ($key, $time = 0) { return false; }
 105         function disconnect_all () { }
 106         function enable_compress ($enable) { }
 107         function forget_dead_hosts () { }
 108         function get ($key) { return null; }
 109         function get_multi ($keys) { return array_pad(array(), count($keys), null); }
 110         function incr ($key, $amt=1) { return null; }
 111         function replace ($key, $value, $exp=0) { return false; }
 112         function run_command ($sock, $cmd) { return null; }
 113         function set ($key, $value, $exp=0){ return true; }
 114         function set_compress_threshold ($thresh){ }
 115         function set_debug ($dbg) { }
 116         function set_servers ($list) { }
 117 }
 118
 119 if( $wgUseMemCached ) {
 120         $wgMemc = new MemCachedClientforWiki( array('persistant' => true) );
 121         $wgMemc->set_servers( $wgMemCachedServers );
 122         $wgMemc->set_debug( $wgMemCachedDebug );
 123
 124         # Test it to see if it's working
 125         # This is necessary because otherwise wfMsg would be extremely inefficient
 126         if ( !$wgMemc->set( "test", "", 0 ) ) {
 127                 wfDebug( "Memcached failed setup test - connection error?\n" );
 128                 $wgUseMemCached = false;
 129                 $wgMemc = new FakeMemCachedClient();
 130         }
 131 } else {
 132         $wgMemc = new FakeMemCachedClient();
 133 }
 134
 135 wfProfileOut( "$fname-memcached" );
 136 wfProfileIn( "$fname-misc" );
 137
 138 include_once( "Language.php" );
 139
 140 $wgMessageCache = new MessageCache;
 141
 142 $wgLangClass = "Language" . ucfirst( $wgLanguageCode );
 143 if( ! class_exists( $wgLangClass ) ) {
 144         include_once( "LanguageUtf8.php" );
 145         $wgLangClass = "LanguageUtf8";
 146 }
 147
 148 $wgLang = new $wgLangClass();
 149 if ( !is_object($wgLang) ) {
 150         print "No language class ($wgLang)\N";
 151 }
 152 $wgMessageCache->initialise( $wgUseMemCached, $wgUseDatabaseMessages, $wgMsgCacheExpiry, $wgDBname );
 153
 154 $wgOut = new OutputPage();
 155 wfDebug( "\n\n" );
 156
 157 if ( $wgUseDynamicDates ) {
 158         include_once( "DateFormatter.php" );
 159         global $wgDateFormatter;
 160         $wgDateFormatter = new DateFormatter;
 161 }
 162
 163 if( !$wgCommandLineMode && ( isset( $_COOKIE[ini_get("session.name")] ) || isset( $_COOKIE["{$wgDBname}Password"] ) ) ) {
 164         User::SetupSession();
 165 }
 166
 167 $wgBlockCache = new BlockCache( true );
 168 $wgUser = User::loadFromSession();
 169 $wgDeferredUpdateList = array();
 170 $wgLinkCache = new LinkCache();
 171 $wgMagicWords = array();
 172 $wgMwRedir =& MagicWord::get( MAG_REDIRECT );
 173 $wgParserCache = new ParserCache();
 174 $wgParser = new Parser();
 175 $wgOut->setParserOptions( ParserOptions::newFromUser( $wgUser ) );
 176
 177 wfProfileOut( "$fname-misc" );
 178 wfProfileOut( $fname );
 179
 180 ?>