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