--- /dev/null
+<?php
+/**
+ * DBMS-specific installation helper.
+ *
+ * @file
+ * @ingroup Deployment
+ */
+
+/**
+ * Base class for DBMS-specific installation helper classes.
+ *
+ * @ingroup Deployment
+ * @since 1.17
+ */
+abstract class DatabaseInstaller {
+
+ /**
+ * The Installer object.
+ *
+ * TODO: naming this parent is confusing, 'installer' would be clearer.
+ *
+ * @var WebInstaller
+ */
+ public $parent;
+
+ /**
+ * The database connection.
+ *
+ * @var DatabaseBase
+ */
+ public $db = null;
+
+ /**
+ * Internal variables for installation.
+ *
+ * @var array
+ */
+ protected $internalDefaults = array();
+
+ /**
+ * Array of MW configuration globals this class uses.
+ *
+ * @var array
+ */
+ protected $globalNames = array();
+
+ /**
+ * Return the internal name, e.g. 'mysql', or 'sqlite'.
+ */
+ public abstract function getName();
+
+ /**
+ * @return true if the client library is compiled in.
+ */
+ public abstract function isCompiled();
+
+ /**
+ * Get HTML for a web form that configures this database. Configuration
+ * at this time should be the minimum needed to connect and test
+ * whether install or upgrade is required.
+ *
+ * If this is called, $this->parent can be assumed to be a WebInstaller.
+ */
+ public abstract function getConnectForm();
+
+ /**
+ * Set variables based on the request array, assuming it was submitted
+ * via the form returned by getConnectForm(). Validate the connection
+ * settings by attempting to connect with them.
+ *
+ * If this is called, $this->parent can be assumed to be a WebInstaller.
+ *
+ * @return Status
+ */
+ public abstract function submitConnectForm();
+
+ /**
+ * Get HTML for a web form that retrieves settings used for installation.
+ * $this->parent can be assumed to be a WebInstaller.
+ * If the DB type has no settings beyond those already configured with
+ * getConnectForm(), this should return false.
+ */
+ public function getSettingsForm() {
+ return false;
+ }
+
+ /**
+ * Set variables based on the request array, assuming it was submitted via
+ * the form return by getSettingsForm().
+ *
+ * @return Status
+ */
+ public function submitSettingsForm() {
+ return Status::newGood();
+ }
+
+ /**
+ * Open a connection to the database using the administrative user/password
+ * currently defined in the session, without any caching. Returns a status
+ * object. On success, the status object will contain a Database object in
+ * its value member.
+ *
+ * @return Status
+ */
+ public abstract function openConnection();
+
+ /**
+ * Create the database and return a Status object indicating success or
+ * failure.
+ *
+ * @return Status
+ */
+ public abstract function setupDatabase();
+
+ /**
+ * Connect to the database using the administrative user/password currently
+ * defined in the session. Returns a status object. On success, the status
+ * object will contain a Database object in its value member.
+ *
+ * This will return a cached connection if one is available.
+ *
+ * @return Status
+ */
+ public function getConnection() {
+ if ( $this->db ) {
+ return Status::newGood( $this->db );
+ }
+
+ $status = $this->openConnection();
+ if ( $status->isOK() ) {
+ $this->db = $status->value;
+ // Enable autocommit
+ $this->db->clearFlag( DBO_TRX );
+ $this->db->commit();
+ }
+ return $status;
+ }
+
+ /**
+ * Create database tables from scratch.
+ *
+ * @return Status
+ */
+ public function createTables() {
+ $status = $this->getConnection();
+ if ( !$status->isOK() ) {
+ return $status;
+ }
+ $this->db->selectDB( $this->getVar( 'wgDBname' ) );
+
+ if( $this->db->tableExists( 'user' ) ) {
+ $status->warning( 'config-install-tables-exist' );
+ $this->enableLB();
+ return $status;
+ }
+
+ $this->db->setFlag( DBO_DDLMODE ); // For Oracle's handling of schema files
+ $this->db->begin( __METHOD__ );
+
+ $error = $this->db->sourceFile( $this->db->getSchema() );
+ if( $error !== true ) {
+ $this->db->reportQueryError( $error, 0, '', __METHOD__ );
+ $this->db->rollback( __METHOD__ );
+ $status->fatal( 'config-install-tables-failed', $error );
+ } else {
+ $this->db->commit( __METHOD__ );
+ }
+ // Resume normal operations
+ if( $status->isOk() ) {
+ $this->enableLB();
+ }
+ return $status;
+ }
+
+ /**
+ * Create the tables for each extension the user enabled
+ * @return Status
+ */
+ public function createExtensionTables() {
+ $status = $this->getConnection();
+ if ( !$status->isOK() ) {
+ return $status;
+ }
+ $updater = DatabaseUpdater::newForDB( $this->db );
+ $extensionUpdates = $updater->getNewExtensions();
+
+ $ourExtensions = array_map( 'strtolower', $this->getVar( '_Extensions' ) );
+
+ foreach( $ourExtensions as $ext ) {
+ if( isset( $extensionUpdates[$ext] ) ) {
+ $this->db->begin( __METHOD__ );
+ $error = $this->db->sourceFile( $extensionUpdates[$ext] );
+ if( $error !== true ) {
+ $this->db->rollback( __METHOD__ );
+ $status->warning( 'config-install-tables-failed', $error );
+ } else {
+ $this->db->commit( __METHOD__ );
+ }
+ }
+ }
+
+ // Now run updates to create tables for old extensions
+ $updater->doUpdates( array( 'extensions' ) );
+
+ return $status;
+ }
+
+ /**
+ * Get the DBMS-specific options for LocalSettings.php generation.
+ *
+ * @return String
+ */
+ public abstract function getLocalSettings();
+
+ /**
+ * Override this to provide DBMS-specific schema variables, to be
+ * substituted into tables.sql and other schema files.
+ */
+ public function getSchemaVars() {
+ return array();
+ }
+
+ /**
+ * Set appropriate schema variables in the current database connection.
+ *
+ * This should be called after any request data has been imported, but before
+ * any write operations to the database.
+ */
+ public function setupSchemaVars() {
+ $status = $this->getConnection();
+ if ( $status->isOK() ) {
+ $status->value->setSchemaVars( $this->getSchemaVars() );
+ } else {
+ throw new MWException( __METHOD__.': unexpected DB connection error' );
+ }
+ }
+
+ /**
+ * Set up LBFactory so that wfGetDB() etc. works.
+ * We set up a special LBFactory instance which returns the current
+ * installer connection.
+ */
+ public function enableLB() {
+ $status = $this->getConnection();
+ if ( !$status->isOK() ) {
+ throw new MWException( __METHOD__.': unexpected DB connection error' );
+ }
+ LBFactory::setInstance( new LBFactory_Single( array(
+ 'connection' => $status->value ) ) );
+ }
+
+ /**
+ * Perform database upgrades
+ *
+ * @return Boolean
+ */
+ public function doUpgrade() {
+ $this->setupSchemaVars();
+ $this->enableLB();
+
+ $ret = true;
+ ob_start( array( $this, 'outputHandler' ) );
+ try {
+ $up = DatabaseUpdater::newForDB( $this->db );
+ $up->doUpdates();
+ } catch ( MWException $e ) {
+ echo "\nAn error occured:\n";
+ echo $e->getText();
+ $ret = false;
+ }
+ ob_end_flush();
+ return $ret;
+ }
+
+ /**
+ * Allow DB installers a chance to make last-minute changes before installation
+ * occurs. This happens before setupDatabase() or createTables() is called, but
+ * long after the constructor. Helpful for things like modifying setup steps :)
+ */
+ public function preInstall() {
+
+ }
+
+ /**
+ * Allow DB installers a chance to make checks before upgrade.
+ */
+ public function preUpgrade() {
+
+ }
+
+ /**
+ * Get an array of MW configuration globals that will be configured by this class.
+ */
+ public function getGlobalNames() {
+ return $this->globalNames;
+ }
+
+ /**
+ * Construct and initialise parent.
+ * This is typically only called from Installer::getDBInstaller()
+ */
+ public function __construct( $parent ) {
+ $this->parent = $parent;
+ }
+
+ /**
+ * Convenience function.
+ * Check if a named extension is present.
+ *
+ * @see wfDl
+ */
+ protected static function checkExtension( $name ) {
+ wfSuppressWarnings();
+ $compiled = wfDl( $name );
+ wfRestoreWarnings();
+ return $compiled;
+ }
+
+ /**
+ * Get the internationalised name for this DBMS.
+ */
+ public function getReadableName() {
+ return wfMsg( 'config-type-' . $this->getName() );
+ }
+
+ /**
+ * Get a name=>value map of MW configuration globals that overrides.
+ * DefaultSettings.php
+ */
+ public function getGlobalDefaults() {
+ return array();
+ }
+
+ /**
+ * Get a name=>value map of internal variables used during installation.
+ */
+ public function getInternalDefaults() {
+ return $this->internalDefaults;
+ }
+
+ /**
+ * Get a variable, taking local defaults into account.
+ */
+ public function getVar( $var, $default = null ) {
+ $defaults = $this->getGlobalDefaults();
+ $internal = $this->getInternalDefaults();
+ if ( isset( $defaults[$var] ) ) {
+ $default = $defaults[$var];
+ } elseif ( isset( $internal[$var] ) ) {
+ $default = $internal[$var];
+ }
+ return $this->parent->getVar( $var, $default );
+ }
+
+ /**
+ * Convenience alias for $this->parent->setVar()
+ */
+ public function setVar( $name, $value ) {
+ $this->parent->setVar( $name, $value );
+ }
+
+ /**
+ * Get a labelled text box to configure a local variable.
+ */
+ public function getTextBox( $var, $label, $attribs = array(), $helpData = "" ) {
+ $name = $this->getName() . '_' . $var;
+ $value = $this->getVar( $var );
+ if ( !isset( $attribs ) ) {
+ $attribs = array();
+ }
+ return $this->parent->getTextBox( array(
+ 'var' => $var,
+ 'label' => $label,
+ 'attribs' => $attribs,
+ 'controlName' => $name,
+ 'value' => $value,
+ 'help' => $helpData
+ ) );
+ }
+
+ /**
+ * Get a labelled password box to configure a local variable.
+ * Implements password hiding.
+ */
+ public function getPasswordBox( $var, $label, $attribs = array(), $helpData = "" ) {
+ $name = $this->getName() . '_' . $var;
+ $value = $this->getVar( $var );
+ if ( !isset( $attribs ) ) {
+ $attribs = array();
+ }
+ return $this->parent->getPasswordBox( array(
+ 'var' => $var,
+ 'label' => $label,
+ 'attribs' => $attribs,
+ 'controlName' => $name,
+ 'value' => $value,
+ 'help' => $helpData
+ ) );
+ }
+
+ /**
+ * Get a labelled checkbox to configure a local boolean variable.
+ */
+ public function getCheckBox( $var, $label, $attribs = array(), $helpData = "" ) {
+ $name = $this->getName() . '_' . $var;
+ $value = $this->getVar( $var );
+ return $this->parent->getCheckBox( array(
+ 'var' => $var,
+ 'label' => $label,
+ 'attribs' => $attribs,
+ 'controlName' => $name,
+ 'value' => $value,
+ 'help' => $helpData
+ ));
+ }
+
+ /**
+ * Get a set of labelled radio buttons.
+ *
+ * @param $params Array:
+ * Parameters are:
+ * var: The variable to be configured (required)
+ * label: The message name for the label (required)
+ * itemLabelPrefix: The message name prefix for the item labels (required)
+ * values: List of allowed values (required)
+ * itemAttribs Array of attribute arrays, outer key is the value name (optional)
+ *
+ */
+ public function getRadioSet( $params ) {
+ $params['controlName'] = $this->getName() . '_' . $params['var'];
+ $params['value'] = $this->getVar( $params['var'] );
+ return $this->parent->getRadioSet( $params );
+ }
+
+ /**
+ * Convenience function to set variables based on form data.
+ * Assumes that variables containing "password" in the name are (potentially
+ * fake) passwords.
+ * @param $varNames Array
+ */
+ public function setVarsFromRequest( $varNames ) {
+ return $this->parent->setVarsFromRequest( $varNames, $this->getName() . '_' );
+ }
+
+ /**
+ * Determine whether an existing installation of MediaWiki is present in
+ * the configured administrative connection. Returns true if there is
+ * such a wiki, false if the database doesn't exist.
+ *
+ * Traditionally, this is done by testing for the existence of either
+ * the revision table or the cur table.
+ *
+ * @return Boolean
+ */
+ public function needsUpgrade() {
+ $status = $this->getConnection();
+ if ( !$status->isOK() ) {
+ return false;
+ }
+
+ if ( !$this->db->selectDB( $this->getVar( 'wgDBname' ) ) ) {
+ return false;
+ }
+ return $this->db->tableExists( 'cur' ) || $this->db->tableExists( 'revision' );
+ }
+
+ /**
+ * Get a standard install-user fieldset.
+ *
+ * @return String
+ */
+ public function getInstallUserBox() {
+ return
+ Html::openElement( 'fieldset' ) .
+ Html::element( 'legend', array(), wfMsg( 'config-db-install-account' ) ) .
+ $this->getTextBox( '_InstallUser', 'config-db-username', array(), $this->parent->getHelpBox( 'config-db-install-username' ) ) .
+ $this->getPasswordBox( '_InstallPassword', 'config-db-password', array(), $this->parent->getHelpBox( 'config-db-install-password' ) ) .
+ Html::closeElement( 'fieldset' );
+ }
+
+ /**
+ * Submit a standard install user fieldset.
+ */
+ public function submitInstallUserBox() {
+ $this->setVarsFromRequest( array( '_InstallUser', '_InstallPassword' ) );
+ return Status::newGood();
+ }
+
+ /**
+ * Get a standard web-user fieldset
+ * @param $noCreateMsg String: Message to display instead of the creation checkbox.
+ * Set this to false to show a creation checkbox.
+ *
+ * @return String
+ */
+ public function getWebUserBox( $noCreateMsg = false ) {
+ $wrapperStyle = $this->getVar( '_SameAccount' ) ? 'display: none' : '';
+ $s = Html::openElement( 'fieldset' ) .
+ Html::element( 'legend', array(), wfMsg( 'config-db-web-account' ) ) .
+ $this->getCheckBox(
+ '_SameAccount', 'config-db-web-account-same',
+ array( 'class' => 'hideShowRadio', 'rel' => 'dbOtherAccount' )
+ ) .
+ Html::openElement( 'div', array( 'id' => 'dbOtherAccount', 'style' => $wrapperStyle ) ) .
+ $this->getTextBox( 'wgDBuser', 'config-db-username' ) .
+ $this->getPasswordBox( 'wgDBpassword', 'config-db-password' ) .
+ $this->parent->getHelpBox( 'config-db-web-help' );
+ if ( $noCreateMsg ) {
+ $s .= $this->parent->getWarningBox( wfMsgNoTrans( $noCreateMsg ) );
+ } else {
+ $s .= $this->getCheckBox( '_CreateDBAccount', 'config-db-web-create' );
+ }
+ $s .= Html::closeElement( 'div' ) . Html::closeElement( 'fieldset' );
+ return $s;
+ }
+
+ /**
+ * Submit the form from getWebUserBox().
+ *
+ * @return Status
+ */
+ public function submitWebUserBox() {
+ $this->setVarsFromRequest(
+ array( 'wgDBuser', 'wgDBpassword', '_SameAccount', '_CreateDBAccount' )
+ );
+
+ if ( $this->getVar( '_SameAccount' ) ) {
+ $this->setVar( 'wgDBuser', $this->getVar( '_InstallUser' ) );
+ $this->setVar( 'wgDBpassword', $this->getVar( '_InstallPassword' ) );
+ }
+
+ if( $this->getVar( '_CreateDBAccount' ) && strval( $this->getVar( 'wgDBpassword' ) ) == '' ) {
+ return Status::newFatal( 'config-db-password-empty', $this->getVar( 'wgDBuser' ) );
+ }
+
+ return Status::newGood();
+ }
+
+ /**
+ * Common function for databases that don't understand the MySQLish syntax of interwiki.sql.
+ *
+ * @return Status
+ */
+ public function populateInterwikiTable() {
+ $status = $this->getConnection();
+ if ( !$status->isOK() ) {
+ return $status;
+ }
+ $this->db->selectDB( $this->getVar( 'wgDBname' ) );
+
+ if( $this->db->selectRow( 'interwiki', '*', array(), __METHOD__ ) ) {
+ $status->warning( 'config-install-interwiki-exists' );
+ return $status;
+ }
+ global $IP;
+ wfSuppressWarnings();
+ $rows = file( "$IP/maintenance/interwiki.list",
+ FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES );
+ wfRestoreWarnings();
+ $interwikis = array();
+ if ( !$rows ) {
+ return Status::newFatal( 'config-install-interwiki-list' );
+ }
+ foreach( $rows as $row ) {
+ $row = preg_replace( '/^\s*([^#]*?)\s*(#.*)?$/', '\\1', $row ); // strip comments - whee
+ if ( $row == "" ) continue;
+ $row .= "||";
+ $interwikis[] = array_combine(
+ array( 'iw_prefix', 'iw_url', 'iw_local', 'iw_api', 'iw_wikiid' ),
+ explode( '|', $row )
+ );
+ }
+ $this->db->insert( 'interwiki', $interwikis, __METHOD__ );
+ return Status::newGood();
+ }
+
+ public function outputHandler( $string ) {
+ return htmlspecialchars( $string );
+ }
+}
scripts.mit.edu / autoinstallsdev / mediawiki.git / blobdiff