WebInstallerUpgrade.php

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<?php
namespace MediaWiki\Installer;
 
class WebInstallerUpgrade extends WebInstallerPage {
 
    public function isSlow() {
        return true;
    }
 
    public function execute() {
        if ( $this->getVar( '_UpgradeDone' ) ) {
            // Allow regeneration of LocalSettings.php, unless we are working
            // from a pre-existing LocalSettings.php file and we want to avoid
            // leaking its contents
            if ( $this->parent->request->wasPosted() && !$this->getVar( '_ExistingDBSettings' ) ) {
                // Done message acknowledged
                return 'continue';
            }
            // Back button click
            // Show the done message again
            // Make them click back again if they want to do the upgrade again
            $this->showDoneMessage();
 
            return 'output';
        }
 
        if ( !$this->parent->needsUpgrade() ) {
            return 'skip';
        }
 
        if ( $this->parent->request->wasPosted() ) {
            $this->startLiveBox();
            $result = $this->parent->doUpgrade();
            $this->endLiveBox();
 
            if ( $result ) {
                $this->showDoneMessage();
            } else {
                $this->startForm();
                $this->parent->showError( 'config-upgrade-error' );
                $this->endForm();
            }
 
            return 'output';
        }
 
        $this->startForm();
        $this->addHTML( $this->parent->getInfoBox(
            wfMessage( 'config-can-upgrade', MW_VERSION )->plain() ) );
        $this->endForm();
 
        return null;
    }
 
    public function showDoneMessage() {
        $this->startForm();
        $regenerate = !$this->getVar( '_ExistingDBSettings' );
        if ( $regenerate ) {
            $msg = 'config-upgrade-done';
        } else {
            $msg = 'config-upgrade-done-no-regenerate';
        }
        $this->parent->disableLinkPopups();
        $this->parent->showSuccess(
            $msg,
            $this->getVar( 'wgServer' ) . $this->getVar( 'wgScriptPath' ) . '/index.php'
        );
        $this->parent->restoreLinkPopups();
        $this->endForm( $regenerate ? 'regenerate' : false, false );
    }
 
}