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( 'User.php' );
  46 require_once( 'Skin.php' );
  47 require_once( 'OutputPage.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 require_once( 'LoadBalancer.php' );
  62
  63 $wgRequest = new WebRequest();
  64
  65
  66
  67 wfProfileOut( $fname.'-includes' );
  68 wfProfileIn( $fname.'-memcached' );
  69 global $wgUser, $wgLang, $wgOut, $wgTitle;
  70 global $wgArticle, $wgDeferredUpdateList, $wgLinkCache;
  71 global $wgMemc, $wgMagicWords, $wgMwRedir, $wgDebugLogFile;
  72 global $wgMessageCache, $wgUseMemCached, $wgUseDatabaseMessages;
  73 global $wgMsgCacheExpiry, $wgCommandLineMode;
  74 global $wgBlockCache, $wgParserCache, $wgParser, $wgDBConnections;
  75 global $wgLoadBalancer, $wgDBservers, $wgDebugDumpSql;
  76 global $wgDBserver, $wgDBuser, $wgDBpassword, $wgDBname, $wgDBtype;
  77 global $wgFullyInitialised;
  78
  79 # Useful debug output
  80 if ( $wgCommandLineMode ) {
  81         # wfDebug( '"' . implode( '"  "', $argv ) . '"' );
  82 } elseif ( function_exists( 'getallheaders' ) ) {
  83         wfDebug( "\nStart request\n" );
  84         wfDebug( $_SERVER['REQUEST_METHOD'] . ' ' . $_SERVER['REQUEST_URI'] . "\n" );
  85         $headers = getallheaders();
  86         foreach ($headers as $name => $value) {
  87                 wfDebug( "$name: $value\n" );
  88         }
  89         wfDebug( "\n" );
  90 } else {
  91         wfDebug( $_SERVER['REQUEST_METHOD'] . ' ' . $_SERVER['REQUEST_URI'] . "\n" );
  92 }
  93
  94 # Set up Memcached
  95 #
  96 class MemCachedClientforWiki extends memcached {
  97         function _debugprint( $text ) {
  98                 wfDebug( "memcached: $text\n" );
  99         }
 100 }
 101
 102 # FakeMemCachedClient imitates the API of memcached-client v. 0.1.2.
 103 # It acts as a memcached server with no RAM, that is, all objects are
 104 # cleared the moment they are set. All set operations succeed and all
 105 # get operations return null.
 106
 107 class FakeMemCachedClient {
 108         function add ($key, $val, $exp = 0) { return true; }
 109         function decr ($key, $amt=1) { return null; }
 110         function delete ($key, $time = 0) { return false; }
 111         function disconnect_all () { }
 112         function enable_compress ($enable) { }
 113         function forget_dead_hosts () { }
 114         function get ($key) { return null; }
 115         function get_multi ($keys) { return array_pad(array(), count($keys), null); }
 116         function incr ($key, $amt=1) { return null; }
 117         function replace ($key, $value, $exp=0) { return false; }
 118         function run_command ($sock, $cmd) { return null; }
 119         function set ($key, $value, $exp=0){ return true; }
 120         function set_compress_threshold ($thresh){ }
 121         function set_debug ($dbg) { }
 122         function set_servers ($list) { }
 123 }
 124
 125 if( $wgUseMemCached ) {
 126         $wgMemc = new MemCachedClientforWiki( array('persistant' => true) );
 127         $wgMemc->set_servers( $wgMemCachedServers );
 128         $wgMemc->set_debug( $wgMemCachedDebug );
 129
 130         $messageMemc = &$wgMemc;
 131 } else {
 132         $wgMemc = new FakeMemCachedClient();
 133
 134         # Give the message cache a separate cache in the DB.
 135         # This is a speedup over separately querying every message used
 136         require_once( 'ObjectCache.php' );
 137         $messageMemc = new MediaWikiBagOStuff('objectcache');
 138 }
 139
 140 wfProfileOut( $fname.'-memcached' );
 141 wfProfileIn( $fname.'-SetupSession' );
 142
 143 if( !$wgCommandLineMode && ( isset( $_COOKIE[ini_get('session.name')] ) || isset( $_COOKIE[$wgDBname.'Password'] ) ) ) {
 144         User::SetupSession();
 145         $wgSessionStarted = true;
 146 } else {
 147         $wgSessionStarted = false;
 148 }
 149
 150 wfProfileOut( $fname.'-SetupSession' );
 151 wfProfileIn( $fname.'-database' );
 152
 153 if ( !$wgDBservers ) {
 154         $wgDBservers = array(array(
 155                 'host' => $wgDBserver,
 156                 'user' => $wgDBuser,
 157                 'password' => $wgDBpassword,
 158                 'dbname' => $wgDBname,
 159                 'type' => $wgDBtype,
 160                 'load' => 1,
 161                 'flags' => ($wgDebugDumpSql ? DBO_DEBUG : 0) | DBO_DEFAULT
 162         ));
 163 }
 164 $wgLoadBalancer = LoadBalancer::newFromParams( $wgDBservers );
 165 $wgLoadBalancer->loadMasterPos();
 166
 167 wfProfileOut( $fname.'-database' );
 168 wfProfileIn( $fname.'-language' );
 169 require_once( 'languages/Language.php' );
 170
 171 $wgMessageCache = new MessageCache;
 172
 173 $wgLangClass = 'Language' . ucfirst( $wgLanguageCode );
 174 if( ! class_exists( $wgLangClass ) || ($wgLanguageCode == 'en' && !$wgUseLatin1) ) {
 175         # Default to English/UTF-8
 176         require_once( 'languages/LanguageUtf8.php' );
 177         $wgLangClass = 'LanguageUtf8';
 178 }
 179
 180 $wgLang = new $wgLangClass();
 181 if ( !is_object($wgLang) ) {
 182         print "No language class ($wgLang)\N";
 183 }
 184
 185 if( $wgUseLatin1 && $wgLanguageCode != 'en' ) {
 186         # For non-UTF-8 non-English.
 187         require_once( 'languages/LanguageLatin1.php' );
 188         $xxx = new LanguageLatin1( $wgLang );
 189         unset( $wgLang );
 190         $wgLang = $xxx;
 191 }
 192 wfProfileOut( $fname.'-language' );
 193 wfProfileIn( $fname.'-MessageCache' );
 194
 195 $wgMessageCache->initialise( $messageMemc, $wgUseDatabaseMessages, $wgMsgCacheExpiry, $wgDBname );
 196
 197 wfProfileOut( $fname.'-MessageCache' );
 198 wfProfileIn( $fname.'-OutputPage' );
 199
 200 $wgOut = new OutputPage();
 201 wfDebug( "\n\n" );
 202
 203 wfProfileOut( $fname.'-OutputPage' );
 204 wfProfileIn( $fname.'-DateFormatter' );
 205
 206 if ( $wgUseDynamicDates ) {
 207         require_once( 'DateFormatter.php' );
 208         global $wgDateFormatter;
 209         $wgDateFormatter = new DateFormatter;
 210 }
 211
 212 wfProfileOut( $fname.'-DateFormatter' );
 213 wfProfileIn( $fname.'-BlockCache' );
 214
 215 $wgBlockCache = new BlockCache( true );
 216
 217 wfProfileOut( $fname.'-BlockCache' );
 218 wfProfileIn( $fname.'-User' );
 219
 220 if( $wgCommandLineMode ) {
 221         # Used for some maintenance scripts; user session cookies can screw things up
 222         # when the database is in an in-between state.
 223         $wgUser = new User();
 224 } else {
 225         $wgUser = User::loadFromSession();
 226 }
 227
 228 wfProfileOut( $fname.'-User' );
 229 wfProfileIn( $fname.'-misc' );
 230
 231 $wgDeferredUpdateList = array();
 232 $wgLinkCache = new LinkCache();
 233 $wgMagicWords = array();
 234 $wgMwRedir =& MagicWord::get( MAG_REDIRECT );
 235 $wgParserCache = new ParserCache();
 236 $wgParser = new Parser();
 237 $wgOut->setParserOptions( ParserOptions::newFromUser( $wgUser ) );
 238 $wgDBConnections = array();
 239 wfSeedRandom();
 240
 241 # Placeholders in case of DB error
 242 $wgTitle = Title::newFromText( wfMsg( 'badtitle' ) );
 243 $wgArticle = new Article($wgTitle);
 244
 245 wfProfileOut( $fname.'-misc' );
 246 wfProfileIn( $fname.'-extensions' );
 247
 248 # Extension setup functions
 249 # Entries should be added to this variable during the inclusion
 250 # of the extension file. This allows the extension to perform
 251 # any necessary initialisation in the fully initialised environment
 252 foreach ( $wgExtensionFunctions as $func ) {
 253         $func();
 254 }
 255
 256 $wgFullyInitialised = true;
 257 wfProfileOut( $fname.'-extensions' );
 258 wfProfileOut( $fname );
 259
 260
 261 ?>