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<?php /** * Sqlite-specific installer. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * http://www.gnu.org/copyleft/gpl.html * * @file * @ingroup Installer */ namespace MediaWiki\Installer; use MediaWiki\MediaWikiServices; use MediaWiki\Status\Status; use Wikimedia\AtEase\AtEase; use Wikimedia\Rdbms\DatabaseFactory; use Wikimedia\Rdbms\DatabaseSqlite; use Wikimedia\Rdbms\DBConnectionError; /** * Class for setting up the MediaWiki database using SQLLite. * * @ingroup Installer * @since 1.17 */ class SqliteInstaller extends DatabaseInstaller { /** @inheritDoc */ public static $minimumVersion = '3.8.0'; /** @inheritDoc */ protected static $notMinimumVersionMessage = 'config-outdated-sqlite'; /** * @var DatabaseSqlite */ public $db; /** @inheritDoc */ protected $globalNames = [ 'wgDBname', 'wgSQLiteDataDir', ]; public function getName() { return 'sqlite'; } public function isCompiled() { return self::checkExtension( 'pdo_sqlite' ); } public function getConnectForm( WebInstaller $webInstaller ): DatabaseConnectForm { return new SqliteConnectForm( $webInstaller, $this ); } public function getSettingsForm( WebInstaller $webInstaller ): DatabaseSettingsForm { return new DatabaseSettingsForm( $webInstaller, $this ); } /** * @return Status */ public function checkPrerequisites() { // Bail out if SQLite is too old $db = DatabaseSqlite::newStandaloneInstance( ':memory:' ); $result = static::meetsMinimumRequirement( $db ); // Check for FTS3 full-text search module if ( DatabaseSqlite::getFulltextSearchModule() != 'FTS3' ) { $result->warning( 'config-no-fts3' ); } return $result; } public function getGlobalDefaults() { global $IP; $defaults = parent::getGlobalDefaults(); if ( !empty( $_SERVER['DOCUMENT_ROOT'] ) ) { $path = dirname( $_SERVER['DOCUMENT_ROOT'] ); } else { // We use $IP when unable to get $_SERVER['DOCUMENT_ROOT'] $path = $IP; } $defaults['wgSQLiteDataDir'] = str_replace( [ '/', '\\' ], DIRECTORY_SEPARATOR, $path . '/data' ); return $defaults; } /** * Safe wrapper for PHP's realpath() that fails gracefully if it's unable to canonicalize the path. * * @param string $path * * @return string */ public static function realpath( $path ) { return realpath( $path ) ?: $path; } /** * Check if the data directory is writable or can be created * @param string $dir Path to the data directory * @return Status Return fatal Status if $dir un-writable or no permission to create a directory */ public static function checkDataDir( $dir ): Status { if ( is_dir( $dir ) ) { if ( !is_readable( $dir ) ) { return Status::newFatal( 'config-sqlite-dir-unwritable', $dir ); } } elseif ( !is_writable( dirname( $dir ) ) ) { // Check the parent directory if $dir not exists $webserverGroup = Installer::maybeGetWebserverPrimaryGroup(); if ( $webserverGroup !== null ) { return Status::newFatal( 'config-sqlite-parent-unwritable-group', $dir, dirname( $dir ), basename( $dir ), $webserverGroup ); } return Status::newFatal( 'config-sqlite-parent-unwritable-nogroup', $dir, dirname( $dir ), basename( $dir ) ); } return Status::newGood(); } /** * @param string $dir Path to the data directory * @return Status Return good Status if without error */ private static function createDataDir( $dir ): Status { if ( !is_dir( $dir ) ) { AtEase::suppressWarnings(); $ok = wfMkdirParents( $dir, 0700, __METHOD__ ); AtEase::restoreWarnings(); if ( !$ok ) { return Status::newFatal( 'config-sqlite-mkdir-error', $dir ); } } # Put a .htaccess file in case the user didn't take our advice file_put_contents( "$dir/.htaccess", "Require all denied\n" . "Satisfy All\n" ); return Status::newGood(); } /** * @param string $type * @return ConnectionStatus */ public function openConnection( string $type ) { $status = new ConnectionStatus; $dir = $this->getVar( 'wgSQLiteDataDir' ); $dbName = $this->getVar( 'wgDBname' ); // Don't implicitly create the file $file = DatabaseSqlite::generateFileName( $dir, $dbName ); if ( !file_exists( $file ) ) { $status->fatal( 'config-sqlite-connection-error', 'file does not exist' ); return $status; } try { $db = MediaWikiServices::getInstance()->getDatabaseFactory()->create( 'sqlite', [ 'dbname' => $dbName, 'dbDirectory' => $dir ] ); $status->setDB( $db ); } catch ( DBConnectionError $e ) { $status->fatal( 'config-sqlite-connection-error', $e->getMessage() ); } return $status; } /** * @return Status */ public function setupDatabase() { $dir = $this->getVar( 'wgSQLiteDataDir' ); # Double check (Only available in web installation). We checked this before but maybe someone # deleted the data dir between then and now $dir_status = self::checkDataDir( $dir ); if ( $dir_status->isGood() ) { $res = self::createDataDir( $dir ); if ( !$res->isGood() ) { return $res; } } else { return $dir_status; } $db = $this->getVar( 'wgDBname' ); # Make the main and cache stub DB files $status = Status::newGood(); $status->merge( $this->makeStubDBFile( $dir, $db ) ); $status->merge( $this->makeStubDBFile( $dir, "wikicache" ) ); $status->merge( $this->makeStubDBFile( $dir, "{$db}_l10n_cache" ) ); $status->merge( $this->makeStubDBFile( $dir, "{$db}_jobqueue" ) ); if ( !$status->isOK() ) { return $status; } # Nuke the unused settings for clarity $this->setVar( 'wgDBserver', '' ); $this->setVar( 'wgDBuser', '' ); $this->setVar( 'wgDBpassword', '' ); # Create the l10n cache DB try { $conn = ( new DatabaseFactory() )->create( 'sqlite', [ 'dbname' => "{$db}_l10n_cache", 'dbDirectory' => $dir ] ); # @todo: don't duplicate l10n_cache definition, though it's very simple $sql = <<<EOT CREATE TABLE l10n_cache ( lc_lang BLOB NOT NULL, lc_key TEXT NOT NULL, lc_value BLOB NOT NULL, PRIMARY KEY (lc_lang, lc_key) ); EOT; $conn->query( $sql, __METHOD__ ); $conn->query( "PRAGMA journal_mode=WAL", __METHOD__ ); // this is permanent $conn->close( __METHOD__ ); } catch ( DBConnectionError $e ) { return Status::newFatal( 'config-sqlite-connection-error', $e->getMessage() ); } # Create the job queue DB try { $conn = ( new DatabaseFactory() )->create( 'sqlite', [ 'dbname' => "{$db}_jobqueue", 'dbDirectory' => $dir ] ); # @todo: don't duplicate job definition, though it's very static $sql = <<<EOT CREATE TABLE job ( job_id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, job_cmd BLOB NOT NULL default '', job_namespace INTEGER NOT NULL, job_title TEXT NOT NULL, job_timestamp BLOB NULL default NULL, job_params BLOB NOT NULL, job_random integer NOT NULL default 0, job_attempts integer NOT NULL default 0, job_token BLOB NOT NULL default '', job_token_timestamp BLOB NULL default NULL, job_sha1 BLOB NOT NULL default '' ); CREATE INDEX job_sha1 ON job (job_sha1); CREATE INDEX job_cmd_token ON job (job_cmd,job_token,job_random); CREATE INDEX job_cmd_token_id ON job (job_cmd,job_token,job_id); CREATE INDEX job_cmd ON job (job_cmd, job_namespace, job_title, job_params); CREATE INDEX job_timestamp ON job (job_timestamp); EOT; $conn->query( $sql, __METHOD__ ); $conn->query( "PRAGMA journal_mode=WAL", __METHOD__ ); // this is permanent $conn->close( __METHOD__ ); } catch ( DBConnectionError $e ) { return Status::newFatal( 'config-sqlite-connection-error', $e->getMessage() ); } # Open the main DB $mainConnStatus = $this->getConnection( self::CONN_CREATE_TABLES ); // Use WAL mode. This has better performance // when the DB is being read and written concurrently. // This causes the DB to be created in this mode // so we only have to do this on creation. $mainConnStatus->getDB()->query( "PRAGMA journal_mode=WAL", __METHOD__ ); return $mainConnStatus; } /** * @param string $dir * @param string $db * @return Status */ protected function makeStubDBFile( $dir, $db ) { $file = DatabaseSqlite::generateFileName( $dir, $db ); if ( file_exists( $file ) ) { if ( !is_writable( $file ) ) { return Status::newFatal( 'config-sqlite-readonly', $file ); } return Status::newGood(); } $oldMask = umask( 0177 ); if ( file_put_contents( $file, '' ) === false ) { umask( $oldMask ); return Status::newFatal( 'config-sqlite-cant-create-db', $file ); } umask( $oldMask ); return Status::newGood(); } /** * @return Status */ public function createTables() { $status = parent::createTables(); return $this->setupSearchIndex( $status ); } /** * @param Status &$status * @return Status */ public function setupSearchIndex( &$status ) { global $IP; $module = DatabaseSqlite::getFulltextSearchModule(); $searchIndexSql = (string)$this->db->newSelectQueryBuilder() ->select( 'sql' ) ->from( $this->db->addIdentifierQuotes( 'sqlite_master' ) ) ->where( [ 'tbl_name' => $this->db->tableName( 'searchindex', 'raw' ) ] ) ->caller( __METHOD__ )->fetchField(); $fts3tTable = ( stristr( $searchIndexSql, 'fts' ) !== false ); if ( $fts3tTable && !$module ) { $status->warning( 'config-sqlite-fts3-downgrade' ); $this->db->sourceFile( "$IP/maintenance/sqlite/archives/searchindex-no-fts.sql" ); } elseif ( !$fts3tTable && $module == 'FTS3' ) { $this->db->sourceFile( "$IP/maintenance/sqlite/archives/searchindex-fts3.sql" ); } return $status; } /** * @return string */ public function getLocalSettings() { $dir = LocalSettingsGenerator::escapePhpString( $this->getVar( 'wgSQLiteDataDir' ) ); // These tables have frequent writes and are thus split off from the main one. // Since the code using these tables only uses transactions for writes, then set // them to using BEGIN IMMEDIATE. This avoids frequent lock errors on the first write action. return "# SQLite-specific settings \$wgSQLiteDataDir = \"{$dir}\"; \$wgObjectCaches[CACHE_DB] = [ 'class' => SqlBagOStuff::class, 'loggroup' => 'SQLBagOStuff', 'server' => [ 'type' => 'sqlite', 'dbname' => 'wikicache', 'tablePrefix' => '', 'variables' => [ 'synchronous' => 'NORMAL' ], 'dbDirectory' => \$wgSQLiteDataDir, 'trxMode' => 'IMMEDIATE', 'flags' => 0 ] ]; \$wgLocalisationCacheConf['storeServer'] = [ 'type' => 'sqlite', 'dbname' => \"{\$wgDBname}_l10n_cache\", 'tablePrefix' => '', 'variables' => [ 'synchronous' => 'NORMAL' ], 'dbDirectory' => \$wgSQLiteDataDir, 'trxMode' => 'IMMEDIATE', 'flags' => 0 ]; \$wgJobTypeConf['default'] = [ 'class' => 'JobQueueDB', 'claimTTL' => 3600, 'server' => [ 'type' => 'sqlite', 'dbname' => \"{\$wgDBname}_jobqueue\", 'tablePrefix' => '', 'variables' => [ 'synchronous' => 'NORMAL' ], 'dbDirectory' => \$wgSQLiteDataDir, 'trxMode' => 'IMMEDIATE', 'flags' => 0 ] ]; \$wgResourceLoaderUseObjectCacheForDeps = true;"; } }
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