Installer, * and are also MediaWiki database types valid for $wgDBtype. * * To add a new type, create a Installer class and a Database * class, and add a config-type- message to MessagesEn.php. * * @var array */ protected static $dbTypes = array( 'mysql', 'postgres', 'oracle', 'mssql', 'sqlite', ); /** * A list of environment check methods called by doEnvironmentChecks(). * These may output warnings using showMessage(), and/or abort the * installation process by returning false. * * For the WebInstaller these are only called on the Welcome page, * if these methods have side-effects that should affect later page loads * (as well as the generated stylesheet), use envPreps instead. * * @var array */ protected $envChecks = array( 'envCheckDB', 'envCheckRegisterGlobals', 'envCheckBrokenXML', 'envCheckMagicQuotes', 'envCheckMbstring', 'envCheckSafeMode', 'envCheckXML', 'envCheckPCRE', 'envCheckMemory', 'envCheckCache', 'envCheckModSecurity', 'envCheckDiff3', 'envCheckGraphics', 'envCheckGit', 'envCheckServer', 'envCheckPath', 'envCheckShellLocale', 'envCheckUploadsDirectory', 'envCheckLibicu', 'envCheckSuhosinMaxValueLength', 'envCheckCtype', 'envCheckIconv', 'envCheckJSON', ); /** * A list of environment preparation methods called by doEnvironmentPreps(). * * @var array */ protected $envPreps = array( 'envPrepExtension', 'envPrepServer', 'envPrepPath', ); /** * MediaWiki configuration globals that will eventually be passed through * to LocalSettings.php. The names only are given here, the defaults * typically come from DefaultSettings.php. * * @var array */ protected $defaultVarNames = array( 'wgSitename', 'wgPasswordSender', 'wgLanguageCode', 'wgRightsIcon', 'wgRightsText', 'wgRightsUrl', 'wgMainCacheType', 'wgEnableEmail', 'wgEnableUserEmail', 'wgEnotifUserTalk', 'wgEnotifWatchlist', 'wgEmailAuthentication', 'wgDBtype', 'wgDiff3', 'wgImageMagickConvertCommand', 'wgGitBin', 'IP', 'wgScriptPath', 'wgScriptExtension', 'wgMetaNamespace', 'wgDeletedDirectory', 'wgEnableUploads', 'wgShellLocale', 'wgSecretKey', 'wgUseInstantCommons', 'wgUpgradeKey', 'wgDefaultSkin', ); /** * Variables that are stored alongside globals, and are used for any * configuration of the installation process aside from the MediaWiki * configuration. Map of names to defaults. * * @var array */ protected $internalDefaults = array( '_UserLang' => 'en', '_Environment' => false, '_SafeMode' => false, '_RaiseMemory' => false, '_UpgradeDone' => false, '_InstallDone' => false, '_Caches' => array(), '_InstallPassword' => '', '_SameAccount' => true, '_CreateDBAccount' => false, '_NamespaceType' => 'site-name', '_AdminName' => '', // will be set later, when the user selects language '_AdminPassword' => '', '_AdminPasswordConfirm' => '', '_AdminEmail' => '', '_Subscribe' => false, '_SkipOptional' => 'continue', '_RightsProfile' => 'wiki', '_LicenseCode' => 'none', '_CCDone' => false, '_Extensions' => array(), '_Skins' => array(), '_MemCachedServers' => '', '_UpgradeKeySupplied' => false, '_ExistingDBSettings' => false, // $wgLogo is probably wrong (bug 48084); set something that will work. // Single quotes work fine here, as LocalSettingsGenerator outputs this unescaped. 'wgLogo' => '$wgResourceBasePath/resources/assets/wiki.png', ); /** * The actual list of installation steps. This will be initialized by getInstallSteps() * * @var array */ private $installSteps = array(); /** * Extra steps for installation, for things like DatabaseInstallers to modify * * @var array */ protected $extraInstallSteps = array(); /** * Known object cache types and the functions used to test for their existence. * * @var array */ protected $objectCaches = array( 'xcache' => 'xcache_get', 'apc' => 'apc_fetch', 'wincache' => 'wincache_ucache_get' ); /** * User rights profiles. * * @var array */ public $rightsProfiles = array( 'wiki' => array(), 'no-anon' => array( '*' => array( 'edit' => false ) ), 'fishbowl' => array( '*' => array( 'createaccount' => false, 'edit' => false, ), ), 'private' => array( '*' => array( 'createaccount' => false, 'edit' => false, 'read' => false, ), ), ); /** * License types. * * @var array */ public $licenses = array( 'cc-by' => array( 'url' => 'https://creativecommons.org/licenses/by/3.0/', 'icon' => '$wgResourceBasePath/resources/assets/licenses/cc-by.png', ), 'cc-by-sa' => array( 'url' => 'https://creativecommons.org/licenses/by-sa/3.0/', 'icon' => '$wgResourceBasePath/resources/assets/licenses/cc-by-sa.png', ), 'cc-by-nc-sa' => array( 'url' => 'https://creativecommons.org/licenses/by-nc-sa/3.0/', 'icon' => '$wgResourceBasePath/resources/assets/licenses/cc-by-nc-sa.png', ), 'cc-0' => array( 'url' => 'https://creativecommons.org/publicdomain/zero/1.0/', 'icon' => '$wgResourceBasePath/resources/assets/licenses/cc-0.png', ), 'pd' => array( 'url' => '', 'icon' => '$wgResourceBasePath/resources/assets/licenses/public-domain.png', ), 'gfdl' => array( 'url' => 'https://www.gnu.org/copyleft/fdl.html', 'icon' => '$wgResourceBasePath/resources/assets/licenses/gnu-fdl.png', ), 'none' => array( 'url' => '', 'icon' => '', 'text' => '' ), 'cc-choose' => array( // Details will be filled in by the selector. 'url' => '', 'icon' => '', 'text' => '', ), ); /** * URL to mediawiki-announce subscription */ protected $mediaWikiAnnounceUrl = 'https://lists.wikimedia.org/mailman/subscribe/mediawiki-announce'; /** * Supported language codes for Mailman */ protected $mediaWikiAnnounceLanguages = array( 'ca', 'cs', 'da', 'de', 'en', 'es', 'et', 'eu', 'fi', 'fr', 'hr', 'hu', 'it', 'ja', 'ko', 'lt', 'nl', 'no', 'pl', 'pt', 'pt-br', 'ro', 'ru', 'sl', 'sr', 'sv', 'tr', 'uk' ); /** * UI interface for displaying a short message * The parameters are like parameters to wfMessage(). * The messages will be in wikitext format, which will be converted to an * output format such as HTML or text before being sent to the user. * @param string $msg */ abstract public function showMessage( $msg /*, ... */ ); /** * Same as showMessage(), but for displaying errors * @param string $msg */ abstract public function showError( $msg /*, ... */ ); /** * Show a message to the installing user by using a Status object * @param Status $status */ abstract public function showStatusMessage( Status $status ); /** * Constructor, always call this from child classes. */ public function __construct() { global $wgMessagesDirs, $wgUser; // Disable the i18n cache Language::getLocalisationCache()->disableBackend(); // Disable LoadBalancer and wfGetDB etc. LBFactory::disableBackend(); // Disable object cache (otherwise CACHE_ANYTHING will try CACHE_DB and // SqlBagOStuff will then throw since we just disabled wfGetDB) $GLOBALS['wgMemc'] = new EmptyBagOStuff; ObjectCache::clear(); $emptyCache = array( 'class' => 'EmptyBagOStuff' ); $GLOBALS['wgObjectCaches'] = array( CACHE_NONE => $emptyCache, CACHE_DB => $emptyCache, CACHE_ANYTHING => $emptyCache, CACHE_MEMCACHED => $emptyCache, ); // Load the installer's i18n. $wgMessagesDirs['MediawikiInstaller'] = __DIR__ . '/i18n'; // Having a user with id = 0 safeguards us from DB access via User::loadOptions(). $wgUser = User::newFromId( 0 ); $this->settings = $this->internalDefaults; foreach ( $this->defaultVarNames as $var ) { $this->settings[$var] = $GLOBALS[$var]; } $this->doEnvironmentPreps(); $this->compiledDBs = array(); foreach ( self::getDBTypes() as $type ) { $installer = $this->getDBInstaller( $type ); if ( !$installer->isCompiled() ) { continue; } $this->compiledDBs[] = $type; } $this->parserTitle = Title::newFromText( 'Installer' ); $this->parserOptions = new ParserOptions; // language will be wrong :( $this->parserOptions->setEditSection( false ); } /** * Get a list of known DB types. * * @return array */ public static function getDBTypes() { return self::$dbTypes; } /** * Do initial checks of the PHP environment. Set variables according to * the observed environment. * * It's possible that this may be called under the CLI SAPI, not the SAPI * that the wiki will primarily run under. In that case, the subclass should * initialise variables such as wgScriptPath, before calling this function. * * Under the web subclass, it can already be assumed that PHP 5+ is in use * and that sessions are working. * * @return Status */ public function doEnvironmentChecks() { // Php version has already been checked by entry scripts // Show message here for information purposes if ( wfIsHHVM() ) { $this->showMessage( 'config-env-hhvm', HHVM_VERSION ); } else { $this->showMessage( 'config-env-php', PHP_VERSION ); } $good = true; // Must go here because an old version of PCRE can prevent other checks from completing list( $pcreVersion ) = explode( ' ', PCRE_VERSION, 2 ); if ( version_compare( $pcreVersion, self::MINIMUM_PCRE_VERSION, '<' ) ) { $this->showError( 'config-pcre-old', self::MINIMUM_PCRE_VERSION, $pcreVersion ); $good = false; } else { foreach ( $this->envChecks as $check ) { $status = $this->$check(); if ( $status === false ) { $good = false; } } } $this->setVar( '_Environment', $good ); return $good ? Status::newGood() : Status::newFatal( 'config-env-bad' ); } public function doEnvironmentPreps() { foreach ( $this->envPreps as $prep ) { $this->$prep(); } } /** * Set a MW configuration variable, or internal installer configuration variable. * * @param string $name * @param mixed $value */ public function setVar( $name, $value ) { $this->settings[$name] = $value; } /** * Get an MW configuration variable, or internal installer configuration variable. * The defaults come from $GLOBALS (ultimately DefaultSettings.php). * Installer variables are typically prefixed by an underscore. * * @param string $name * @param mixed $default * * @return mixed */ public function getVar( $name, $default = null ) { if ( !isset( $this->settings[$name] ) ) { return $default; } else { return $this->settings[$name]; } } /** * Get a list of DBs supported by current PHP setup * * @return array */ public function getCompiledDBs() { return $this->compiledDBs; } /** * Get an instance of DatabaseInstaller for the specified DB type. * * @param mixed $type DB installer for which is needed, false to use default. * * @return DatabaseInstaller */ public function getDBInstaller( $type = false ) { if ( !$type ) { $type = $this->getVar( 'wgDBtype' ); } $type = strtolower( $type ); if ( !isset( $this->dbInstallers[$type] ) ) { $class = ucfirst( $type ) . 'Installer'; $this->dbInstallers[$type] = new $class( $this ); } return $this->dbInstallers[$type]; } /** * Determine if LocalSettings.php exists. If it does, return its variables. * * @return array */ public static function getExistingLocalSettings() { global $IP; // You might be wondering why this is here. Well if you don't do this // then some poorly-formed extensions try to call their own classes // after immediately registering them. We really need to get extension // registration out of the global scope and into a real format. // @see https://bugzilla.wikimedia.org/67440 global $wgAutoloadClasses; $wgAutoloadClasses = array(); wfSuppressWarnings(); $_lsExists = file_exists( "$IP/LocalSettings.php" ); wfRestoreWarnings(); if ( !$_lsExists ) { return false; } unset( $_lsExists ); require "$IP/includes/DefaultSettings.php"; require "$IP/LocalSettings.php"; return get_defined_vars(); } /** * Get a fake password for sending back to the user in HTML. * This is a security mechanism to avoid compromise of the password in the * event of session ID compromise. * * @param string $realPassword * * @return string */ public function getFakePassword( $realPassword ) { return str_repeat( '*', strlen( $realPassword ) ); } /** * Set a variable which stores a password, except if the new value is a * fake password in which case leave it as it is. * * @param string $name * @param mixed $value */ public function setPassword( $name, $value ) { if ( !preg_match( '/^\*+$/', $value ) ) { $this->setVar( $name, $value ); } } /** * On POSIX systems return the primary group of the webserver we're running under. * On other systems just returns null. * * This is used to advice the user that he should chgrp his mw-config/data/images directory as the * webserver user before he can install. * * Public because SqliteInstaller needs it, and doesn't subclass Installer. * * @return mixed */ public static function maybeGetWebserverPrimaryGroup() { if ( !function_exists( 'posix_getegid' ) || !function_exists( 'posix_getpwuid' ) ) { # I don't know this, this isn't UNIX. return null; } # posix_getegid() *not* getmygid() because we want the group of the webserver, # not whoever owns the current script. $gid = posix_getegid(); $getpwuid = posix_getpwuid( $gid ); $group = $getpwuid['name']; return $group; } /** * Convert wikitext $text to HTML. * * This is potentially error prone since many parser features require a complete * installed MW database. The solution is to just not use those features when you * write your messages. This appears to work well enough. Basic formatting and * external links work just fine. * * But in case a translator decides to throw in a "#ifexist" or internal link or * whatever, this function is guarded to catch the attempted DB access and to present * some fallback text. * * @param string $text * @param bool $lineStart * @return string */ public function parse( $text, $lineStart = false ) { global $wgParser; try { $out = $wgParser->parse( $text, $this->parserTitle, $this->parserOptions, $lineStart ); $html = $out->getText(); } catch ( DBAccessError $e ) { $html = ' ' . htmlspecialchars( $text ); if ( !empty( $this->debug ) ) { $html .= ""; } } return $html; } /** * @return ParserOptions */ public function getParserOptions() { return $this->parserOptions; } public function disableLinkPopups() { $this->parserOptions->setExternalLinkTarget( false ); } public function restoreLinkPopups() { global $wgExternalLinkTarget; $this->parserOptions->setExternalLinkTarget( $wgExternalLinkTarget ); } /** * Install step which adds a row to the site_stats table with appropriate * initial values. * * @param DatabaseInstaller $installer * * @return Status */ public function populateSiteStats( DatabaseInstaller $installer ) { $status = $installer->getConnection(); if ( !$status->isOK() ) { return $status; } $status->value->insert( 'site_stats', array( 'ss_row_id' => 1, 'ss_total_edits' => 0, 'ss_good_articles' => 0, 'ss_total_pages' => 0, 'ss_users' => 0, 'ss_images' => 0 ), __METHOD__, 'IGNORE' ); return Status::newGood(); } /** * Exports all wg* variables stored by the installer into global scope. */ public function exportVars() { foreach ( $this->settings as $name => $value ) { if ( substr( $name, 0, 2 ) == 'wg' ) { $GLOBALS[$name] = $value; } } } /** * Environment check for DB types. * @return bool */ protected function envCheckDB() { global $wgLang; $allNames = array(); // Messages: config-type-mysql, config-type-postgres, config-type-oracle, // config-type-sqlite foreach ( self::getDBTypes() as $name ) { $allNames[] = wfMessage( "config-type-$name" )->text(); } $databases = $this->getCompiledDBs(); $databases = array_flip( $databases ); foreach ( array_keys( $databases ) as $db ) { $installer = $this->getDBInstaller( $db ); $status = $installer->checkPrerequisites(); if ( !$status->isGood() ) { $this->showStatusMessage( $status ); } if ( !$status->isOK() ) { unset( $databases[$db] ); } } $databases = array_flip( $databases ); if ( !$databases ) { $this->showError( 'config-no-db', $wgLang->commaList( $allNames ), count( $allNames ) ); // @todo FIXME: This only works for the web installer! return false; } return true; } /** * Environment check for register_globals. * Prevent installation if enabled * @return bool */ protected function envCheckRegisterGlobals() { if ( wfIniGetBool( 'register_globals' ) ) { $this->showMessage( 'config-register-globals-error' ); return false; } return true; } /** * Some versions of libxml+PHP break < and > encoding horribly * @return bool */ protected function envCheckBrokenXML() { $test = new PhpXmlBugTester(); if ( !$test->ok ) { $this->showError( 'config-brokenlibxml' ); return false; } return true; } /** * Environment check for magic_quotes_(gpc|runtime|sybase). * @return bool */ protected function envCheckMagicQuotes() { $status = true; foreach ( array( 'gpc', 'runtime', 'sybase' ) as $magicJunk ) { if ( wfIniGetBool( "magic_quotes_$magicJunk" ) ) { $this->showError( "config-magic-quotes-$magicJunk" ); $status = false; } } return $status; } /** * Environment check for mbstring.func_overload. * @return bool */ protected function envCheckMbstring() { if ( wfIniGetBool( 'mbstring.func_overload' ) ) { $this->showError( 'config-mbstring' ); return false; } return true; } /** * Environment check for safe_mode. * @return bool */ protected function envCheckSafeMode() { if ( wfIniGetBool( 'safe_mode' ) ) { $this->setVar( '_SafeMode', true ); $this->showMessage( 'config-safe-mode' ); } return true; } /** * Environment check for the XML module. * @return bool */ protected function envCheckXML() { if ( !function_exists( "utf8_encode" ) ) { $this->showError( 'config-xml-bad' ); return false; } return true; } /** * Environment check for the PCRE module. * * @note If this check were to fail, the parser would * probably throw an exception before the result * of this check is shown to the user. * @return bool */ protected function envCheckPCRE() { wfSuppressWarnings(); $regexd = preg_replace( '/[\x{0430}-\x{04FF}]/iu', '', '-АБВГД-' ); // Need to check for \p support too, as PCRE can be compiled // with utf8 support, but not unicode property support. // check that \p{Zs} (space separators) matches // U+3000 (Ideographic space) $regexprop = preg_replace( '/\p{Zs}/u', '', "-\xE3\x80\x80-" ); wfRestoreWarnings(); if ( $regexd != '--' || $regexprop != '--' ) { $this->showError( 'config-pcre-no-utf8' ); return false; } return true; } /** * Environment check for available memory. * @return bool */ protected function envCheckMemory() { $limit = ini_get( 'memory_limit' ); if ( !$limit || $limit == -1 ) { return true; } $n = wfShorthandToInteger( $limit ); if ( $n < $this->minMemorySize * 1024 * 1024 ) { $newLimit = "{$this->minMemorySize}M"; if ( ini_set( "memory_limit", $newLimit ) === false ) { $this->showMessage( 'config-memory-bad', $limit ); } else { $this->showMessage( 'config-memory-raised', $limit, $newLimit ); $this->setVar( '_RaiseMemory', true ); } } return true; } /** * Environment check for compiled object cache types. */ protected function envCheckCache() { $caches = array(); foreach ( $this->objectCaches as $name => $function ) { if ( function_exists( $function ) ) { if ( $name == 'xcache' && !wfIniGetBool( 'xcache.var_size' ) ) { continue; } $caches[$name] = true; } } if ( !$caches ) { $this->showMessage( 'config-no-cache' ); } $this->setVar( '_Caches', $caches ); } /** * Scare user to death if they have mod_security or mod_security2 * @return bool */ protected function envCheckModSecurity() { if ( self::apacheModulePresent( 'mod_security' ) || self::apacheModulePresent( 'mod_security2' ) ) { $this->showMessage( 'config-mod-security' ); } return true; } /** * Search for GNU diff3. * @return bool */ protected function envCheckDiff3() { $names = array( "gdiff3", "diff3", "diff3.exe" ); $versionInfo = array( '$1 --version 2>&1', 'GNU diffutils' ); $diff3 = self::locateExecutableInDefaultPaths( $names, $versionInfo ); if ( $diff3 ) { $this->setVar( 'wgDiff3', $diff3 ); } else { $this->setVar( 'wgDiff3', false ); $this->showMessage( 'config-diff3-bad' ); } return true; } /** * Environment check for ImageMagick and GD. * @return bool */ protected function envCheckGraphics() { $names = array( wfIsWindows() ? 'convert.exe' : 'convert' ); $versionInfo = array( '$1 -version', 'ImageMagick' ); $convert = self::locateExecutableInDefaultPaths( $names, $versionInfo ); $this->setVar( 'wgImageMagickConvertCommand', '' ); if ( $convert ) { $this->setVar( 'wgImageMagickConvertCommand', $convert ); $this->showMessage( 'config-imagemagick', $convert ); return true; } elseif ( function_exists( 'imagejpeg' ) ) { $this->showMessage( 'config-gd' ); } else { $this->showMessage( 'config-no-scaling' ); } return true; } /** * Search for git. * * @since 1.22 * @return bool */ protected function envCheckGit() { $names = array( wfIsWindows() ? 'git.exe' : 'git' ); $versionInfo = array( '$1 --version', 'git version' ); $git = self::locateExecutableInDefaultPaths( $names, $versionInfo ); if ( $git ) { $this->setVar( 'wgGitBin', $git ); $this->showMessage( 'config-git', $git ); } else { $this->setVar( 'wgGitBin', false ); $this->showMessage( 'config-git-bad' ); } return true; } /** * Environment check to inform user which server we've assumed. * * @return bool */ protected function envCheckServer() { $server = $this->envGetDefaultServer(); if ( $server !== null ) { $this->showMessage( 'config-using-server', $server ); } return true; } /** * Environment check to inform user which paths we've assumed. * * @return bool */ protected function envCheckPath() { $this->showMessage( 'config-using-uri', $this->getVar( 'wgServer' ), $this->getVar( 'wgScriptPath' ) ); return true; } /** * Environment check for preferred locale in shell * @return bool */ protected function envCheckShellLocale() { $os = php_uname( 's' ); $supported = array( 'Linux', 'SunOS', 'HP-UX', 'Darwin' ); # Tested these if ( !in_array( $os, $supported ) ) { return true; } # Get a list of available locales. $ret = false; $lines = wfShellExec( '/usr/bin/locale -a', $ret ); if ( $ret ) { return true; } $lines = array_map( 'trim', explode( "\n", $lines ) ); $candidatesByLocale = array(); $candidatesByLang = array(); foreach ( $lines as $line ) { if ( $line === '' ) { continue; } if ( !preg_match( '/^([a-zA-Z]+)(_[a-zA-Z]+|)\.(utf8|UTF-8)(@[a-zA-Z_]*|)$/i', $line, $m ) ) { continue; } list( , $lang, , , ) = $m; $candidatesByLocale[$m[0]] = $m; $candidatesByLang[$lang][] = $m; } # Try the current value of LANG. if ( isset( $candidatesByLocale[getenv( 'LANG' )] ) ) { $this->setVar( 'wgShellLocale', getenv( 'LANG' ) ); return true; } # Try the most common ones. $commonLocales = array( 'en_US.UTF-8', 'en_US.utf8', 'de_DE.UTF-8', 'de_DE.utf8' ); foreach ( $commonLocales as $commonLocale ) { if ( isset( $candidatesByLocale[$commonLocale] ) ) { $this->setVar( 'wgShellLocale', $commonLocale ); return true; } } # Is there an available locale in the Wiki's language? $wikiLang = $this->getVar( 'wgLanguageCode' ); if ( isset( $candidatesByLang[$wikiLang] ) ) { $m = reset( $candidatesByLang[$wikiLang] ); $this->setVar( 'wgShellLocale', $m[0] ); return true; } # Are there any at all? if ( count( $candidatesByLocale ) ) { $m = reset( $candidatesByLocale ); $this->setVar( 'wgShellLocale', $m[0] ); return true; } # Give up. return true; } /** * Environment check for the permissions of the uploads directory * @return bool */ protected function envCheckUploadsDirectory() { global $IP; $dir = $IP . '/images/'; $url = $this->getVar( 'wgServer' ) . $this->getVar( 'wgScriptPath' ) . '/images/'; $safe = !$this->dirIsExecutable( $dir, $url ); if ( !$safe ) { $this->showMessage( 'config-uploads-not-safe', $dir ); } return true; } /** * Checks if suhosin.get.max_value_length is set, and if so generate * a warning because it decreases ResourceLoader performance. * @return bool */ protected function envCheckSuhosinMaxValueLength() { $maxValueLength = ini_get( 'suhosin.get.max_value_length' ); if ( $maxValueLength > 0 && $maxValueLength < 1024 ) { // Only warn if the value is below the sane 1024 $this->showMessage( 'config-suhosin-max-value-length', $maxValueLength ); } return true; } /** * Convert a hex string representing a Unicode code point to that code point. * @param string $c * @return string */ protected function unicodeChar( $c ) { $c = hexdec( $c ); if ( $c <= 0x7F ) { return chr( $c ); } elseif ( $c <= 0x7FF ) { return chr( 0xC0 | $c >> 6 ) . chr( 0x80 | $c & 0x3F ); } elseif ( $c <= 0xFFFF ) { return chr( 0xE0 | $c >> 12 ) . chr( 0x80 | $c >> 6 & 0x3F ) . chr( 0x80 | $c & 0x3F ); } elseif ( $c <= 0x10FFFF ) { return chr( 0xF0 | $c >> 18 ) . chr( 0x80 | $c >> 12 & 0x3F ) . chr( 0x80 | $c >> 6 & 0x3F ) . chr( 0x80 | $c & 0x3F ); } else { return false; } } /** * Check the libicu version */ protected function envCheckLibicu() { /** * This needs to be updated something that the latest libicu * will properly normalize. This normalization was found at * http://www.unicode.org/versions/Unicode5.2.0/#Character_Additions * Note that we use the hex representation to create the code * points in order to avoid any Unicode-destroying during transit. */ $not_normal_c = $this->unicodeChar( "FA6C" ); $normal_c = $this->unicodeChar( "242EE" ); $useNormalizer = 'php'; $needsUpdate = false; if ( function_exists( 'normalizer_normalize' ) ) { $useNormalizer = 'intl'; $intl = normalizer_normalize( $not_normal_c, Normalizer::FORM_C ); if ( $intl !== $normal_c ) { $needsUpdate = true; } } // Uses messages 'config-unicode-using-php' and 'config-unicode-using-intl' if ( $useNormalizer === 'php' ) { $this->showMessage( 'config-unicode-pure-php-warning' ); } else { $this->showMessage( 'config-unicode-using-' . $useNormalizer ); if ( $needsUpdate ) { $this->showMessage( 'config-unicode-update-warning' ); } } } /** * @return bool */ protected function envCheckCtype() { if ( !function_exists( 'ctype_digit' ) ) { $this->showError( 'config-ctype' ); return false; } return true; } /** * @return bool */ protected function envCheckIconv() { if ( !function_exists( 'iconv' ) ) { $this->showError( 'config-iconv' ); return false; } return true; } /** * @return bool */ protected function envCheckJSON() { if ( !function_exists( 'json_decode' ) ) { $this->showError( 'config-json' ); return false; } return true; } /** * Environment prep for the server hostname. */ protected function envPrepServer() { $server = $this->envGetDefaultServer(); if ( $server !== null ) { $this->setVar( 'wgServer', $server ); } } /** * Helper function to be called from envPrepServer() * @return string */ abstract protected function envGetDefaultServer(); /** * Environment prep for setting the preferred PHP file extension. */ protected function envPrepExtension() { // @todo FIXME: Detect this properly if ( defined( 'MW_INSTALL_PHP5_EXT' ) ) { $ext = '.php5'; } else { $ext = '.php'; } $this->setVar( 'wgScriptExtension', $ext ); } /** * Environment prep for setting $IP and $wgScriptPath. */ protected function envPrepPath() { global $IP; $IP = dirname( dirname( __DIR__ ) ); $this->setVar( 'IP', $IP ); } /** * Get an array of likely places we can find executables. Check a bunch * of known Unix-like defaults, as well as the PATH environment variable * (which should maybe make it work for Windows?) * * @return array */ protected static function getPossibleBinPaths() { return array_merge( array( '/usr/bin', '/usr/local/bin', '/opt/csw/bin', '/usr/gnu/bin', '/usr/sfw/bin', '/sw/bin', '/opt/local/bin' ), explode( PATH_SEPARATOR, getenv( 'PATH' ) ) ); } /** * Search a path for any of the given executable names. Returns the * executable name if found. Also checks the version string returned * by each executable. * * Used only by environment checks. * * @param string $path Path to search * @param array $names Array of executable names * @param array|bool $versionInfo False or array with two members: * 0 => Command to run for version check, with $1 for the full executable name * 1 => String to compare the output with * * If $versionInfo is not false, only executables with a version * matching $versionInfo[1] will be returned. * @return bool|string */ public static function locateExecutable( $path, $names, $versionInfo = false ) { if ( !is_array( $names ) ) { $names = array( $names ); } foreach ( $names as $name ) { $command = $path . DIRECTORY_SEPARATOR . $name; wfSuppressWarnings(); $file_exists = file_exists( $command ); wfRestoreWarnings(); if ( $file_exists ) { if ( !$versionInfo ) { return $command; } $file = str_replace( '$1', wfEscapeShellArg( $command ), $versionInfo[0] ); if ( strstr( wfShellExec( $file ), $versionInfo[1] ) !== false ) { return $command; } } } return false; } /** * Same as locateExecutable(), but checks in getPossibleBinPaths() by default * @see locateExecutable() * @param array $names Array of possible names. * @param array|bool $versionInfo Default: false or array with two members: * 0 => Command to run for version check, with $1 for the full executable name * 1 => String to compare the output with * * If $versionInfo is not false, only executables with a version * matching $versionInfo[1] will be returned. * @return bool|string */ public static function locateExecutableInDefaultPaths( $names, $versionInfo = false ) { foreach ( self::getPossibleBinPaths() as $path ) { $exe = self::locateExecutable( $path, $names, $versionInfo ); if ( $exe !== false ) { return $exe; } } return false; } /** * Checks if scripts located in the given directory can be executed via the given URL. * * Used only by environment checks. * @param string $dir * @param string $url * @return bool|int|string */ public function dirIsExecutable( $dir, $url ) { $scriptTypes = array( 'php' => array( " $contents ) { foreach ( $contents as $source ) { $file = 'exectest.' . $ext; if ( !file_put_contents( $dir . $file, $source ) ) { break; } try { $text = Http::get( $url . $file, array( 'timeout' => 3 ), __METHOD__ ); } catch ( Exception $e ) { // Http::get throws with allow_url_fopen = false and no curl extension. $text = null; } unlink( $dir . $file ); if ( $text == 'exec' ) { wfRestoreWarnings(); return $ext; } } } wfRestoreWarnings(); return false; } /** * Checks for presence of an Apache module. Works only if PHP is running as an Apache module, too. * * @param string $moduleName Name of module to check. * @return bool */ public static function apacheModulePresent( $moduleName ) { if ( function_exists( 'apache_get_modules' ) && in_array( $moduleName, apache_get_modules() ) ) { return true; } // try it the hard way ob_start(); phpinfo( INFO_MODULES ); $info = ob_get_clean(); return strpos( $info, $moduleName ) !== false; } /** * ParserOptions are constructed before we determined the language, so fix it * * @param Language $lang */ public function setParserLanguage( $lang ) { $this->parserOptions->setTargetLanguage( $lang ); $this->parserOptions->setUserLang( $lang ); } /** * Overridden by WebInstaller to provide lastPage parameters. * @param string $page * @return string */ protected function getDocUrl( $page ) { return "{$_SERVER['PHP_SELF']}?page=" . urlencode( $page ); } /** * Finds extensions that follow the format /$directory/Name/Name.php, * and returns an array containing the value for 'Name' for each found extension. * * Reasonable values for $directory include 'extensions' (the default) and 'skins'. * * @param string $directory Directory to search in * @return array */ public function findExtensions( $directory = 'extensions' ) { if ( $this->getVar( 'IP' ) === null ) { return array(); } $extDir = $this->getVar( 'IP' ) . '/' . $directory; if ( !is_readable( $extDir ) || !is_dir( $extDir ) ) { return array(); } // extensions -> extension.json, skins -> skin.json $jsonFile = substr( $directory, 0, strlen( $directory ) -1 ) . '.json'; $dh = opendir( $extDir ); $exts = array(); while ( ( $file = readdir( $dh ) ) !== false ) { if ( !is_dir( "$extDir/$file" ) ) { continue; } if ( file_exists( "$extDir/$file/$jsonFile" ) || file_exists( "$extDir/$file/$file.php" ) ) { $exts[] = $file; } } closedir( $dh ); natcasesort( $exts ); return $exts; } /** * Returns a default value to be used for $wgDefaultSkin: normally the one set in DefaultSettings, * but will fall back to another if the default skin is missing and some other one is present * instead. * * @param string[] $skinNames Names of installed skins. * @return string */ public function getDefaultSkin( array $skinNames ) { $defaultSkin = $GLOBALS['wgDefaultSkin']; if ( !$skinNames || in_array( $defaultSkin, $skinNames ) ) { return $defaultSkin; } else { return $skinNames[0]; } } /** * Installs the auto-detected extensions. * * @return Status */ protected function includeExtensions() { global $IP; $exts = $this->getVar( '_Extensions' ); $IP = $this->getVar( 'IP' ); /** * We need to include DefaultSettings before including extensions to avoid * warnings about unset variables. However, the only thing we really * want here is $wgHooks['LoadExtensionSchemaUpdates']. This won't work * if the extension has hidden hook registration in $wgExtensionFunctions, * but we're not opening that can of worms * @see https://bugzilla.wikimedia.org/show_bug.cgi?id=26857 */ global $wgAutoloadClasses; $wgAutoloadClasses = array(); $queue = array(); require "$IP/includes/DefaultSettings.php"; foreach ( $exts as $e ) { if ( file_exists( "$IP/extensions/$e/extension.json" ) ) { $queue["$IP/extensions/$e/extension.json"] = 1; } else { require_once "$IP/extensions/$e/$e.php"; } } $registry = new ExtensionRegistry(); $data = $registry->readFromQueue( $queue ); $wgAutoloadClasses += $data['autoload']; $hooksWeWant = isset( $wgHooks['LoadExtensionSchemaUpdates'] ) ? $wgHooks['LoadExtensionSchemaUpdates'] : array(); if ( isset( $data['globals']['wgHooks']['LoadExtensionSchemaUpdates'] ) ) { $hooksWeWant = array_merge_recursive( $hooksWeWant, $data['globals']['wgHooks']['LoadExtensionSchemaUpdates'] ); } // Unset everyone else's hooks. Lord knows what someone might be doing // in ParserFirstCallInit (see bug 27171) $GLOBALS['wgHooks'] = array( 'LoadExtensionSchemaUpdates' => $hooksWeWant ); return Status::newGood(); } /** * Get an array of install steps. Should always be in the format of * array( * 'name' => 'someuniquename', * 'callback' => array( $obj, 'method' ), * ) * There must be a config-install-$name message defined per step, which will * be shown on install. * * @param DatabaseInstaller $installer DatabaseInstaller so we can make callbacks * @return array */ protected function getInstallSteps( DatabaseInstaller $installer ) { $coreInstallSteps = array( array( 'name' => 'database', 'callback' => array( $installer, 'setupDatabase' ) ), array( 'name' => 'tables', 'callback' => array( $installer, 'createTables' ) ), array( 'name' => 'interwiki', 'callback' => array( $installer, 'populateInterwikiTable' ) ), array( 'name' => 'stats', 'callback' => array( $this, 'populateSiteStats' ) ), array( 'name' => 'keys', 'callback' => array( $this, 'generateKeys' ) ), array( 'name' => 'updates', 'callback' => array( $installer, 'insertUpdateKeys' ) ), array( 'name' => 'sysop', 'callback' => array( $this, 'createSysop' ) ), array( 'name' => 'mainpage', 'callback' => array( $this, 'createMainpage' ) ), ); // Build the array of install steps starting from the core install list, // then adding any callbacks that wanted to attach after a given step foreach ( $coreInstallSteps as $step ) { $this->installSteps[] = $step; if ( isset( $this->extraInstallSteps[$step['name']] ) ) { $this->installSteps = array_merge( $this->installSteps, $this->extraInstallSteps[$step['name']] ); } } // Prepend any steps that want to be at the beginning if ( isset( $this->extraInstallSteps['BEGINNING'] ) ) { $this->installSteps = array_merge( $this->extraInstallSteps['BEGINNING'], $this->installSteps ); } // Extensions should always go first, chance to tie into hooks and such if ( count( $this->getVar( '_Extensions' ) ) ) { array_unshift( $this->installSteps, array( 'name' => 'extensions', 'callback' => array( $this, 'includeExtensions' ) ) ); $this->installSteps[] = array( 'name' => 'extension-tables', 'callback' => array( $installer, 'createExtensionTables' ) ); } return $this->installSteps; } /** * Actually perform the installation. * * @param callable $startCB A callback array for the beginning of each step * @param callable $endCB A callback array for the end of each step * * @return array Array of Status objects */ public function performInstallation( $startCB, $endCB ) { $installResults = array(); $installer = $this->getDBInstaller(); $installer->preInstall(); $steps = $this->getInstallSteps( $installer ); foreach ( $steps as $stepObj ) { $name = $stepObj['name']; call_user_func_array( $startCB, array( $name ) ); // Perform the callback step $status = call_user_func( $stepObj['callback'], $installer ); // Output and save the results call_user_func( $endCB, $name, $status ); $installResults[$name] = $status; // If we've hit some sort of fatal, we need to bail. // Callback already had a chance to do output above. if ( !$status->isOk() ) { break; } } if ( $status->isOk() ) { $this->setVar( '_InstallDone', true ); } return $installResults; } /** * Generate $wgSecretKey. Will warn if we had to use an insecure random source. * * @return Status */ public function generateKeys() { $keys = array( 'wgSecretKey' => 64 ); if ( strval( $this->getVar( 'wgUpgradeKey' ) ) === '' ) { $keys['wgUpgradeKey'] = 16; } return $this->doGenerateKeys( $keys ); } /** * Generate a secret value for variables using our CryptRand generator. * Produce a warning if the random source was insecure. * * @param array $keys * @return Status */ protected function doGenerateKeys( $keys ) { $status = Status::newGood(); $strong = true; foreach ( $keys as $name => $length ) { $secretKey = MWCryptRand::generateHex( $length, true ); if ( !MWCryptRand::wasStrong() ) { $strong = false; } $this->setVar( $name, $secretKey ); } if ( !$strong ) { $names = array_keys( $keys ); $names = preg_replace( '/^(.*)$/', '\$$1', $names ); global $wgLang; $status->warning( 'config-insecure-keys', $wgLang->listToText( $names ), count( $names ) ); } return $status; } /** * Create the first user account, grant it sysop and bureaucrat rights * * @return Status */ protected function createSysop() { $name = $this->getVar( '_AdminName' ); $user = User::newFromName( $name ); if ( !$user ) { // We should've validated this earlier anyway! return Status::newFatal( 'config-admin-error-user', $name ); } if ( $user->idForName() == 0 ) { $user->addToDatabase(); try { $user->setPassword( $this->getVar( '_AdminPassword' ) ); } catch ( PasswordError $pwe ) { return Status::newFatal( 'config-admin-error-password', $name, $pwe->getMessage() ); } $user->addGroup( 'sysop' ); $user->addGroup( 'bureaucrat' ); if ( $this->getVar( '_AdminEmail' ) ) { $user->setEmail( $this->getVar( '_AdminEmail' ) ); } $user->saveSettings(); // Update user count $ssUpdate = new SiteStatsUpdate( 0, 0, 0, 0, 1 ); $ssUpdate->doUpdate(); } $status = Status::newGood(); if ( $this->getVar( '_Subscribe' ) && $this->getVar( '_AdminEmail' ) ) { $this->subscribeToMediaWikiAnnounce( $status ); } return $status; } /** * @param Status $s */ private function subscribeToMediaWikiAnnounce( Status $s ) { $params = array( 'email' => $this->getVar( '_AdminEmail' ), 'language' => 'en', 'digest' => 0 ); // Mailman doesn't support as many languages as we do, so check to make // sure their selected language is available $myLang = $this->getVar( '_UserLang' ); if ( in_array( $myLang, $this->mediaWikiAnnounceLanguages ) ) { $myLang = $myLang == 'pt-br' ? 'pt_BR' : $myLang; // rewrite to Mailman's pt_BR $params['language'] = $myLang; } if ( MWHttpRequest::canMakeRequests() ) { $res = MWHttpRequest::factory( $this->mediaWikiAnnounceUrl, array( 'method' => 'POST', 'postData' => $params ), __METHOD__ )->execute(); if ( !$res->isOK() ) { $s->warning( 'config-install-subscribe-fail', $res->getMessage() ); } } else { $s->warning( 'config-install-subscribe-notpossible' ); } } /** * Insert Main Page with default content. * * @param DatabaseInstaller $installer * @return Status */ protected function createMainpage( DatabaseInstaller $installer ) { $status = Status::newGood(); try { $page = WikiPage::factory( Title::newMainPage() ); $content = new WikitextContent( wfMessage( 'mainpagetext' )->inContentLanguage()->text() . "\n\n" . wfMessage( 'mainpagedocfooter' )->inContentLanguage()->text() ); $page->doEditContent( $content, '', EDIT_NEW, false, User::newFromName( 'MediaWiki default' ) ); } catch ( Exception $e ) { //using raw, because $wgShowExceptionDetails can not be set yet $status->fatal( 'config-install-mainpage-failed', $e->getMessage() ); } return $status; } /** * Override the necessary bits of the config to run an installation. */ public static function overrideConfig() { define( 'MW_NO_SESSION', 1 ); // Don't access the database $GLOBALS['wgUseDatabaseMessages'] = false; // Don't cache langconv tables $GLOBALS['wgLanguageConverterCacheType'] = CACHE_NONE; // Debug-friendly $GLOBALS['wgShowExceptionDetails'] = true; // Don't break forms $GLOBALS['wgExternalLinkTarget'] = '_blank'; // Extended debugging $GLOBALS['wgShowSQLErrors'] = true; $GLOBALS['wgShowDBErrorBacktrace'] = true; // Allow multiple ob_flush() calls $GLOBALS['wgDisableOutputCompression'] = true; // Use a sensible cookie prefix (not my_wiki) $GLOBALS['wgCookiePrefix'] = 'mw_installer'; // Some of the environment checks make shell requests, remove limits $GLOBALS['wgMaxShellMemory'] = 0; } /** * Add an installation step following the given step. * * @param callable $callback A valid installation callback array, in this form: * array( 'name' => 'some-unique-name', 'callback' => array( $obj, 'function' ) ); * @param string $findStep The step to find. Omit to put the step at the beginning */ public function addInstallStep( $callback, $findStep = 'BEGINNING' ) { $this->extraInstallSteps[$findStep][] = $callback; } /** * Disable the time limit for execution. * Some long-running pages (Install, Upgrade) will want to do this */ protected function disableTimeLimit() { wfSuppressWarnings(); set_time_limit( 0 ); wfRestoreWarnings(); } }