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<?php
/**
* Helper functions for the login form that need to be shared with other special pages
* (such as CentralAuth's SpecialCentralLogin).
* @since 1.27
*/
class LoginHelper extends ContextSource {
/**
* Valid error and warning messages
*
* Special:Userlogin can show an error or warning message on the form when
* coming from another page. This is done via the ?error= or ?warning= GET
* parameters.
*
* This array is the list of valid message keys. Further keys can be added by the
* LoginFormValidErrorMessages hook. All other values will be ignored.
*
* @var string[]
*/
public static $validErrorMessages = [
'exception-nologin-text',
'watchlistanontext',
'changeemail-no-info',
'resetpass-no-info',
'confirmemail_needlogin',
'prefsnologintext2',
];
/**
* Returns an array of all valid error messages.
*
* @return array
* @see LoginHelper::$validErrorMessages
*/
public static function getValidErrorMessages() {
static $messages = null;
if ( !$messages ) {
$messages = self::$validErrorMessages;
Hooks::run( 'LoginFormValidErrorMessages', [ &$messages ] );
}
return $messages;
}
public function __construct( IContextSource $context ) {
$this->setContext( $context );
}
/**
* Show a return link or redirect to it.
* Extensions can change where the link should point or inject content into the page
* (which will change it from redirect to link mode).
*
* @param string $type One of the following:
* - error: display a return to link ignoring $wgRedirectOnLogin
* - success: display a return to link using $wgRedirectOnLogin if needed
* - successredirect: send an HTTP redirect using $wgRedirectOnLogin if needed
* @param string $returnTo
* @param array|string $returnToQuery
* @param bool $stickHTTPS Keep redirect link on HTTPS
*/
public function showReturnToPage(
$type, $returnTo = '', $returnToQuery = '', $stickHTTPS = false
) {
global $wgRedirectOnLogin, $wgSecureLogin;
if ( $type !== 'error' && $wgRedirectOnLogin !== null ) {
$returnTo = $wgRedirectOnLogin;
$returnToQuery = [];
} elseif ( is_string( $returnToQuery ) ) {
$returnToQuery = wfCgiToArray( $returnToQuery );
}
// Allow modification of redirect behavior
Hooks::run( 'PostLoginRedirect', [ &$returnTo, &$returnToQuery, &$type ] );
$returnToTitle = Title::newFromText( $returnTo ) ?: Title::newMainPage();
if ( $wgSecureLogin && !$stickHTTPS ) {
$options = [ 'http' ];
$proto = PROTO_HTTP;
} elseif ( $wgSecureLogin ) {
$options = [ 'https' ];
$proto = PROTO_HTTPS;
} else {
$options = [];
$proto = PROTO_RELATIVE;
}
if ( $type === 'successredirect' ) {
$redirectUrl = $returnToTitle->getFullUrlForRedirect( $returnToQuery, $proto );
$this->getOutput()->redirect( $redirectUrl );
} else {
$this->getOutput()->addReturnTo( $returnToTitle, $returnToQuery, null, $options );
}
}
}
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