includes/installer/SqliteInstaller.php

   1 <?php
   2 /**
   3  * Sqlite-specific installer.
   4  *
   5  * @file
   6  * @ingroup Deployment
   7  */
   8
   9 /**
  10  * Class for setting up the MediaWiki database using SQLLite.
  11  *
  12  * @ingroup Deployment
  13  * @since 1.17
  14  */
  15 class SqliteInstaller extends DatabaseInstaller {
  16
  17         protected $globalNames = array(
  18                 'wgDBname',
  19                 'wgSQLiteDataDir',
  20         );
  21
  22         public function getName() {
  23                 return 'sqlite';
  24         }
  25
  26         public function isCompiled() {
  27                 return self::checkExtension( 'pdo_sqlite' );
  28         }
  29
  30         public function getGlobalDefaults() {
  31                 if ( isset( $_SERVER['DOCUMENT_ROOT'] ) ) {
  32                         $path = str_replace(
  33                                 array( '/', '\\' ),
  34                                 DIRECTORY_SEPARATOR,
  35                                 dirname( $_SERVER['DOCUMENT_ROOT'] ) . '/data'
  36                         );
  37                         return array( 'wgSQLiteDataDir' => $path );
  38                 } else {
  39                         return array();
  40                 }
  41         }
  42
  43         public function getConnectForm() {
  44                 return $this->getTextBox( 'wgSQLiteDataDir', 'config-sqlite-dir', array(), $this->parent->getHelpBox( 'config-sqlite-dir-help' ) ) .
  45                         $this->getTextBox( 'wgDBname', 'config-db-name', array(), $this->parent->getHelpBox( 'config-sqlite-name-help' ) );
  46         }
  47
  48         /*
  49          * Safe wrapper for PHP's realpath() that fails gracefully if it's unable to canonicalize the path.
  50          */
  51         private static function realpath( $path ) {
  52                 $result = realpath( $path );
  53                 if ( !$result ) {
  54                         return $path;
  55                 }
  56                 return $result;
  57         }
  58
  59         public function submitConnectForm() {
  60                 $this->setVarsFromRequest( array( 'wgSQLiteDataDir', 'wgDBname' ) );
  61
  62                 # Try realpath() if the directory already exists
  63                 $dir = self::realpath( $this->getVar( 'wgSQLiteDataDir' ) );
  64                 $result = self::dataDirOKmaybeCreate( $dir, true /* create? */ );
  65                 if ( $result->isOK() )
  66                 {
  67                         # Try expanding again in case we've just created it
  68                         $dir = self::realpath( $dir );
  69                         $this->setVar( 'wgSQLiteDataDir', $dir );
  70                 }
  71                 return $result;
  72         }
  73
  74         private static function dataDirOKmaybeCreate( $dir, $create = false ) {
  75                 if ( !is_dir( $dir ) ) {
  76                         if ( !is_writable( dirname( $dir ) ) ) {
  77                                 $webserverGroup = Installer::maybeGetWebserverPrimaryGroup();
  78                                 if ( $webserverGroup !== null ) {
  79                                         return Status::newFatal( 'config-sqlite-parent-unwritable-group', $dir, dirname( $dir ), basename( $dir ), $webserverGroup );
  80                                 } else {
  81                                         return Status::newFatal( 'config-sqlite-parent-unwritable-nogroup', $dir, dirname( $dir ), basename( $dir ) );
  82                                 }
  83                         }
  84
  85                         # Called early on in the installer, later we just want to sanity check
  86                         # if it's still writable
  87                         if ( $create ) {
  88                                 wfSuppressWarnings();
  89                                 $ok = wfMkdirParents( $dir, 0700 );
  90                                 wfRestoreWarnings();
  91                                 if ( !$ok ) {
  92                                         return Status::newFatal( 'config-sqlite-mkdir-error', $dir );
  93                                 }
  94                                 # Put a .htaccess file in in case the user didn't take our advice
  95                                 file_put_contents( "$dir/.htaccess", "Deny from all\n" );
  96                         }
  97                 }
  98                 if ( !is_writable( $dir ) ) {
  99                         return Status::newFatal( 'config-sqlite-dir-unwritable', $dir );
 100                 }
 101
 102                 # We haven't blown up yet, fall through
 103                 return Status::newGood();
 104         }
 105
 106         public function openConnection() {
 107                 global $wgSQLiteDataDir;
 108
 109                 $status = Status::newGood();
 110                 $dir = $this->getVar( 'wgSQLiteDataDir' );
 111                 $dbName = $this->getVar( 'wgDBname' );
 112                 try {
 113                         # FIXME: need more sensible constructor parameters, e.g. single associative array
 114                         # Setting globals kind of sucks
 115                         $wgSQLiteDataDir = $dir;
 116                         $db = new DatabaseSqlite( false, false, false, $dbName );
 117                         $status->value = $db;
 118                 } catch ( DBConnectionError $e ) {
 119                         $status->fatal( 'config-sqlite-connection-error', $e->getMessage() );
 120                 }
 121                 return $status;
 122         }
 123
 124         public function needsUpgrade() {
 125                 $dir = $this->getVar( 'wgSQLiteDataDir' );
 126                 $dbName = $this->getVar( 'wgDBname' );
 127                 // Don't create the data file yet
 128                 if ( !file_exists( DatabaseSqlite::generateFileName( $dir, $dbName ) ) ) {
 129                         return false;
 130                 }
 131
 132                 // If the data file exists, look inside it
 133                 return parent::needsUpgrade();
 134         }
 135
 136         public function setupDatabase() {
 137                 $dir = $this->getVar( 'wgSQLiteDataDir' );
 138
 139                 # Sanity check. We checked this before but maybe someone deleted the
 140                 # data dir between then and now
 141                 $dir_status = self::dataDirOKmaybeCreate( $dir, false /* create? */ );
 142                 if ( !$dir_status->isOK() ) {
 143                         return $dir_status;
 144                 }
 145
 146                 $db = $this->getVar( 'wgDBname' );
 147                 $file = DatabaseSqlite::generateFileName( $dir, $db );
 148                 if ( file_exists( $file ) ) {
 149                         if ( !is_writable( $file ) ) {
 150                                 return Status::newFatal( 'config-sqlite-readonly', $file );
 151                         }
 152                 } else {
 153                         if ( file_put_contents( $file, '' ) === false ) {
 154                                 return Status::newFatal( 'config-sqlite-cant-create-db', $file );
 155                         }
 156                 }
 157                 // nuke the unused settings for clarity
 158                 $this->setVar( 'wgDBserver', '' );
 159                 $this->setVar( 'wgDBuser', '' );
 160                 $this->setVar( 'wgDBpassword', '' );
 161                 $this->setupSchemaVars();
 162                 return $this->getConnection();
 163         }
 164
 165         public function createTables() {
 166                 $status = parent::createTables();
 167                 return $this->setupSearchIndex( $status );
 168         }
 169
 170         public function setupSearchIndex( &$status ) {
 171                 global $IP;
 172
 173                 $module = $this->db->getFulltextSearchModule();
 174                 $fts3tTable = $this->db->checkForEnabledSearch();
 175                 if ( $fts3tTable &&  !$module ) {
 176                         $status->warning( 'config-sqlite-fts3-downgrade' );
 177                         $this->db->sourceFile( "$IP/maintenance/sqlite/archives/searchindex-no-fts.sql" );
 178                 } elseif ( !$fts3tTable && $module == 'FTS3' ) {
 179                         $this->db->sourceFile( "$IP/maintenance/sqlite/archives/searchindex-fts3.sql" );
 180                 }
 181                 return $status;
 182         }
 183
 184         public function getLocalSettings() {
 185                 $dir = LocalSettingsGenerator::escapePhpString( $this->getVar( 'wgSQLiteDataDir' ) );
 186                 return
 187 "# SQLite-specific settings
 188 \$wgSQLiteDataDir    = \"{$dir}\";";
 189         }
 190 }