SpecialUserLogin.php

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<?php
use MediaWiki\Auth\AuthManager;
use MediaWiki\Logger\LoggerFactory;
use Psr\Log\LogLevel;

class SpecialUserLogin extends LoginSignupSpecialPage {
    protected static $allowedActions = [
        AuthManager::ACTION_LOGIN,
        AuthManager::ACTION_LOGIN_CONTINUE
    ];

    protected static $messages = [
        'authform-newtoken' => 'nocookiesforlogin',
        'authform-notoken' => 'sessionfailure',
        'authform-wrongtoken' => 'sessionfailure',
    ];

    public function __construct() {
        parent::__construct( 'Userlogin' );
    }

    public function doesWrites() {
        return true;
    }

    protected function getLoginSecurityLevel() {
        return false;
    }

    protected function getDefaultAction( $subPage ) {
        return AuthManager::ACTION_LOGIN;
    }

    public function getDescription() {
        return $this->msg( 'login' )->text();
    }

    public function setHeaders() {
        // override the page title if we are doing a forced reauthentication
        parent::setHeaders();
        if ( $this->securityLevel && $this->getUser()->isLoggedIn() ) {
            $this->getOutput()->setPageTitle( $this->msg( 'login-security' ) );
        }
    }

    protected function isSignup() {
        return false;
    }

    protected function beforeExecute( $subPage ) {
        if ( $subPage === 'signup' || $this->getRequest()->getText( 'type' ) === 'signup' ) {
            // B/C for old account creation URLs
            $title = SpecialPage::getTitleFor( 'CreateAccount' );
            $query = array_diff_key( $this->getRequest()->getValues(),
                array_fill_keys( [ 'type', 'title' ], true ) );
            $url = $title->getFullURL( $query, false, PROTO_CURRENT );
            $this->getOutput()->redirect( $url );
            return false;
        }
        return parent::beforeExecute( $subPage );
    }

    protected function successfulAction( $direct = false, $extraMessages = null ) {
        global $wgSecureLogin;

        $user = $this->targetUser ?: $this->getUser();
        $session = $this->getRequest()->getSession();

        if ( $direct ) {
            $user->touch();

            $this->clearToken();

            if ( $user->requiresHTTPS() ) {
                $this->mStickHTTPS = true;
            }
            $session->setForceHTTPS( $wgSecureLogin && $this->mStickHTTPS );

            // If the user does not have a session cookie at this point, they probably need to
            // do something to their browser.
            if ( !$this->hasSessionCookie() ) {
                $this->mainLoginForm( [ /*?*/ ], $session->getProvider()->whyNoSession() );
                // TODO something more specific? This used to use nocookieslogin
                return;
            }
        }

        # Run any hooks; display injected HTML if any, else redirect
        $injected_html = '';
        Hooks::run( 'UserLoginComplete', [ &$user, &$injected_html ] );

        if ( $injected_html !== '' || $extraMessages ) {
            $this->showSuccessPage( 'success', $this->msg( 'loginsuccesstitle' ),
                'loginsuccess', $injected_html, $extraMessages );
        } else {
            $helper = new LoginHelper( $this->getContext() );
            $helper->showReturnToPage( 'successredirect', $this->mReturnTo, $this->mReturnToQuery,
                $this->mStickHTTPS );
        }
    }

    protected function getToken() {
        return $this->getRequest()->getSession()->getToken( '', 'login' );
    }

    protected function clearToken() {
        return $this->getRequest()->getSession()->resetToken( 'login' );
    }

    protected function getTokenName() {
        return 'wpLoginToken';
    }

    protected function getGroupName() {
        return 'login';
    }

    protected function logAuthResult( $success, $status = null ) {
        LoggerFactory::getInstance( 'authmanager-stats' )->info( 'Login attempt', [
            'event' => 'login',
            'successful' => $success,
            'status' => $status,
        ] );
    }
}