1 files changed, 191 insertions, 0 deletions
diff --git a/www/wiki/includes/installer/WebInstallerExistingWiki.php b/www/wiki/includes/installer/WebInstallerExistingWiki.php
new file mode 100644
index 00000000..df68be8e
--- /dev/null
+++ b/www/wiki/includes/installer/WebInstallerExistingWiki.php
@@ -0,0 +1,191 @@
+<?php
+/**
+ * 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 Deployment
+ */
+
+class WebInstallerExistingWiki extends WebInstallerPage {
+
+	/**
+	 * @return string
+	 */
+	public function execute() {
+		// If there is no LocalSettings.php, continue to the installer welcome page
+		$vars = Installer::getExistingLocalSettings();
+		if ( !$vars ) {
+			return 'skip';
+		}
+
+		// Check if the upgrade key supplied to the user has appeared in LocalSettings.php
+		if ( $vars['wgUpgradeKey'] !== false
+			&& $this->getVar( '_UpgradeKeySupplied' )
+			&& $this->getVar( 'wgUpgradeKey' ) === $vars['wgUpgradeKey']
+		) {
+			// It's there, so the user is authorized
+			$status = $this->handleExistingUpgrade( $vars );
+			if ( $status->isOK() ) {
+				return 'skip';
+			} else {
+				$this->startForm();
+				$this->parent->showStatusBox( $status );
+				$this->endForm( 'continue' );
+
+				return 'output';
+			}
+		}
+
+		// If there is no $wgUpgradeKey, tell the user to add one to LocalSettings.php
+		if ( $vars['wgUpgradeKey'] === false ) {
+			if ( $this->getVar( 'wgUpgradeKey', false ) === false ) {
+				$secretKey = $this->getVar( 'wgSecretKey' ); // preserve $wgSecretKey
+				$this->parent->generateKeys();
+				$this->setVar( 'wgSecretKey', $secretKey );
+				$this->setVar( '_UpgradeKeySupplied', true );
+			}
+			$this->startForm();
+			$this->addHTML( $this->parent->getInfoBox(
+				wfMessage( 'config-upgrade-key-missing', "<pre dir=\"ltr\">\$wgUpgradeKey = '" .
+					$this->getVar( 'wgUpgradeKey' ) . "';</pre>" )->plain()
+			) );
+			$this->endForm( 'continue' );
+
+			return 'output';
+		}
+
+		// If there is an upgrade key, but it wasn't supplied, prompt the user to enter it
+
+		$r = $this->parent->request;
+		if ( $r->wasPosted() ) {
+			$key = $r->getText( 'config_wgUpgradeKey' );
+			if ( !$key || $key !== $vars['wgUpgradeKey'] ) {
+				$this->parent->showError( 'config-localsettings-badkey' );
+				$this->showKeyForm();
+
+				return 'output';
+			}
+			// Key was OK
+			$status = $this->handleExistingUpgrade( $vars );
+			if ( $status->isOK() ) {
+				return 'continue';
+			} else {
+				$this->parent->showStatusBox( $status );
+				$this->showKeyForm();
+
+				return 'output';
+			}
+		} else {
+			$this->showKeyForm();
+
+			return 'output';
+		}
+	}
+
+	/**
+	 * Show the "enter key" form
+	 */
+	protected function showKeyForm() {
+		$this->startForm();
+		$this->addHTML(
+			$this->parent->getInfoBox( wfMessage( 'config-localsettings-upgrade' )->plain() ) .
+			'<br />' .
+			$this->parent->getTextBox( [
+				'var' => 'wgUpgradeKey',
+				'label' => 'config-localsettings-key',
+				'attribs' => [ 'autocomplete' => 'off' ],
+			] )
+		);
+		$this->endForm( 'continue' );
+	}
+
+	/**
+	 * @param string[] $names
+	 * @param mixed[] $vars
+	 *
+	 * @return Status
+	 */
+	protected function importVariables( $names, $vars ) {
+		$status = Status::newGood();
+		foreach ( $names as $name ) {
+			if ( !isset( $vars[$name] ) ) {
+				$status->fatal( 'config-localsettings-incomplete', $name );
+			}
+			$this->setVar( $name, $vars[$name] );
+		}
+
+		return $status;
+	}
+
+	/**
+	 * Initiate an upgrade of the existing database
+	 *
+	 * @param mixed[] $vars Variables from LocalSettings.php
+	 *
+	 * @return Status
+	 */
+	protected function handleExistingUpgrade( $vars ) {
+		// Check $wgDBtype
+		if ( !isset( $vars['wgDBtype'] ) ||
+			!in_array( $vars['wgDBtype'], Installer::getDBTypes() )
+		) {
+			return Status::newFatal( 'config-localsettings-connection-error', '' );
+		}
+
+		// Set the relevant variables from LocalSettings.php
+		$requiredVars = [ 'wgDBtype' ];
+		$status = $this->importVariables( $requiredVars, $vars );
+		$installer = $this->parent->getDBInstaller();
+		$status->merge( $this->importVariables( $installer->getGlobalNames(), $vars ) );
+		if ( !$status->isOK() ) {
+			return $status;
+		}
+
+		if ( isset( $vars['wgDBadminuser'] ) ) {
+			$this->setVar( '_InstallUser', $vars['wgDBadminuser'] );
+		} else {
+			$this->setVar( '_InstallUser', $vars['wgDBuser'] );
+		}
+		if ( isset( $vars['wgDBadminpassword'] ) ) {
+			$this->setVar( '_InstallPassword', $vars['wgDBadminpassword'] );
+		} else {
+			$this->setVar( '_InstallPassword', $vars['wgDBpassword'] );
+		}
+
+		// Test the database connection
+		$status = $installer->getConnection();
+		if ( !$status->isOK() ) {
+			// Adjust the error message to explain things correctly
+			$status->replaceMessage( 'config-connection-error',
+				'config-localsettings-connection-error' );
+
+			return $status;
+		}
+
+		// All good
+		$this->setVar( '_ExistingDBSettings', true );
+
+		// Copy $wgAuthenticationTokenVersion too, if it exists
+		$this->setVar( 'wgAuthenticationTokenVersion',
+			isset( $vars['wgAuthenticationTokenVersion'] )
+				? $vars['wgAuthenticationTokenVersion']
+				: null
+		);
+
+		return $status;
+	}
+
+}