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 if( !isset( $wgProfiling ) )
   9         $wgProfiling = false;
  10
  11 if ( $wgProfiling and (0 == rand() % $wgProfileSampleRate ) ) {
  12         include_once( "Profiling.php" );
  13 } else {
  14         function wfProfileIn( $fn ) {}
  15         function wfProfileOut( $fn = "" ) {}
  16         function wfGetProfilingOutput( $s, $e ) {}
  17         function wfProfileClose() {}
  18 }
  19
  20
  21
  22 /* collect the originating ips */
  23 $wgIP = getenv("REMOTE_ADDR");
  24 if( $wgUseSquid && isset( $_SERVER["HTTP_X_FORWARDED_FOR"] ) ) {
  25         # If the web server is behind a reverse proxy, we need to find
  26         # out where our requests are really coming from.
  27         $wgIP = trim( preg_replace( "/^(.*, )?([^,]+)$/", "$2",
  28                 $_SERVER['HTTP_X_FORWARDED_FOR'] ) );
  29 }
  30
  31 $fname = "Setup.php";
  32 wfProfileIn( $fname );
  33 global $wgUseDynamicDates;
  34 wfProfileIn( "$fname-includes" );
  35
  36 include_once( "GlobalFunctions.php" );
  37 include_once( "Namespace.php" );
  38 include_once( "RecentChange.php" );
  39 include_once( "Skin.php" );
  40 include_once( "OutputPage.php" );
  41 include_once( "User.php" );
  42 include_once( "LinkCache.php" );
  43 include_once( "Title.php" );
  44 include_once( "Article.php" );
  45 include_once( "MagicWord.php" );
  46 include_once( "memcached-client.php" );
  47 include_once( "Block.php" );
  48 include_once( "SearchEngine.php" );
  49 include_once( "DifferenceEngine.php" );
  50 include_once( "MessageCache.php" );
  51 include_once( "BlockCache.php" );
  52
  53 wfProfileOut( "$fname-includes" );
  54 wfProfileIn( "$fname-memcached" );
  55 global $wgUser, $wgLang, $wgOut, $wgTitle;
  56 global $wgArticle, $wgDeferredUpdateList, $wgLinkCache;
  57 global $wgMemc, $wgMagicWords, $wgMwRedir, $wgDebugLogFile;
  58 global $wgMessageCache, $wgUseMemCached, $wgUseDatabaseMessages;
  59 global $wgMsgCacheExpiry, $wgDBname, $wgCommandLineMode;
  60 global $wgBlockCache;
  61
  62 # Useful debug output
  63 if ( function_exists( "getallheaders" ) ) {
  64         wfDebug( "\nStart request\n" );
  65         wfDebug( "$REQUEST_METHOD $REQUEST_URI\n" );
  66         $headers = getallheaders();
  67         foreach ($headers as $name => $value) {
  68                 wfDebug( "$name: $value\n" );
  69         }
  70         wfDebug( "\n" );
  71 } else {
  72         wfDebug( "$REQUEST_METHOD $REQUEST_URI\n" );
  73 }
  74
  75
  76 class MemCachedClientforWiki extends memcached {
  77         function _debugprint( $text ) {
  78                 wfDebug( "memcached: $text\n" );
  79         }
  80 }
  81
  82 # FakeMemCachedClient imitates the API of memcached-client v. 0.1.2.
  83 # It acts as a memcached server with no RAM, that is, all objects are
  84 # cleared the moment they are set. All set operations succeed and all
  85 # get operations return null.
  86
  87 class FakeMemCachedClient {
  88         function add ($key, $val, $exp = 0) { return true; }
  89         function decr ($key, $amt=1) { return null; }
  90         function delete ($key, $time = 0) { return false; }
  91         function disconnect_all () { }
  92         function enable_compress ($enable) { }
  93         function forget_dead_hosts () { }
  94         function get ($key) { return null; }
  95         function get_multi ($keys) { return array_pad(array(), count($keys), null); }
  96         function incr ($key, $amt=1) { return null; }
  97         function replace ($key, $value, $exp=0) { return false; }
  98         function run_command ($sock, $cmd) { return null; }
  99         function set ($key, $value, $exp=0){ return true; }
 100         function set_compress_threshold ($thresh){ }
 101         function set_debug ($dbg) { }
 102         function set_servers ($list) { }
 103 }
 104
 105 if( $wgUseMemCached ) {
 106         $wgMemc = new MemCachedClientforWiki( array('persistant' => true) );
 107         $wgMemc->set_servers( $wgMemCachedServers );
 108         $wgMemc->set_debug( $wgMemCachedDebug );
 109
 110         # Test it to see if it's working
 111         # This is necessary because otherwise wfMsg would be extremely inefficient
 112         if ( !$wgMemc->set( "test", "", 0 ) ) {
 113                 wfDebug( "Memcached failed setup test - connection error?\n" );
 114                 $wgUseMemCached = false;
 115                 $wgMemc = new FakeMemCachedClient();
 116         }
 117 } else {
 118         $wgMemc = new FakeMemCachedClient();
 119 }
 120
 121 wfProfileOut( "$fname-memcached" );
 122 wfProfileIn( "$fname-misc" );
 123
 124 include_once( "Language.php" );
 125
 126 $wgMessageCache = new MessageCache;
 127
 128 $wgOut = new OutputPage();
 129 wfDebug( "\n\n" );
 130
 131 $wgLangClass = "Language" . ucfirst( $wgLanguageCode );
 132 if( ! class_exists( $wgLangClass ) ) {
 133         include_once( "LanguageUtf8.php" );
 134         $wgLangClass = "LanguageUtf8";
 135 }
 136
 137 $wgLang = new $wgLangClass();
 138 if ( !is_object($wgLang) ) {
 139         print "No language class ($wgLang)\N";
 140 }
 141 $wgMessageCache->initialise( $wgUseMemCached, $wgUseDatabaseMessages, $wgMsgCacheExpiry, $wgDBname );
 142
 143 if ( $wgUseDynamicDates ) {
 144         include_once( "DateFormatter.php" );
 145         global $wgDateFormatter;
 146         $wgDateFormatter = new DateFormatter;
 147 }
 148
 149 if( !$wgCommandLineMode && isset( $_COOKIE[ini_get("session.name")] )  ) {
 150         User::SetupSession();
 151 }
 152
 153 $wgBlockCache = new BlockCache( true );
 154 $wgUser = User::loadFromSession();
 155 $wgDeferredUpdateList = array();
 156 $wgLinkCache = new LinkCache();
 157 $wgMagicWords = array();
 158 $wgMwRedir =& MagicWord::get( MAG_REDIRECT );
 159
 160 wfProfileOut( "$fname-misc" );
 161 wfProfileOut( $fname );
 162
 163 ?>