Bypass login page if no user input is required.
[lhc/web/wiklou.git] / includes / specialpage / LoginSignupSpecialPage.php
index 8a2e0d6..d3cd577 100644 (file)
@@ -223,11 +223,16 @@ abstract class LoginSignupSpecialPage extends AuthManagerSpecialPage {
                $this->setHeaders();
                $this->checkPermissions();
 
-               // Make sure it's possible to log in
-               if ( !$this->isSignup() && !$session->canSetUser() ) {
-                       throw new ErrorPageError( 'cannotloginnow-title', 'cannotloginnow-text', [
+               // Make sure the system configuration allows log in / sign up
+               if ( !$this->isSignup() && !$authManager->canAuthenticateNow() ) {
+                       if ( !$session->canSetUser() ) {
+                               throw new ErrorPageError( 'cannotloginnow-title', 'cannotloginnow-text', [
                                        $session->getProvider()->describe( RequestContext::getMain()->getLanguage() )
                                ] );
+                       }
+                       throw new ErrorPageError( 'cannotlogin-title', 'cannotlogin-text' );
+               } elseif ( $this->isSignup() && !$authManager->canCreateAccounts() ) {
+                       throw new ErrorPageError( 'cannotcreateaccount-title', 'cannotcreateaccount-text' );
                }
 
                /*
@@ -289,6 +294,14 @@ abstract class LoginSignupSpecialPage extends AuthManagerSpecialPage {
                        return;
                }
 
+               if ( $this->canBypassForm( $button_name ) ) {
+                       $this->setRequest( [], true );
+                       $this->getRequest()->setVal( $this->getTokenName(), $this->getToken() );
+                       if ( $button_name ) {
+                               $this->getRequest()->setVal( $button_name, true );
+                       }
+               }
+
                $status = $this->trySubmit();
 
                if ( !$status || !$status->isGood() ) {
@@ -354,13 +367,53 @@ abstract class LoginSignupSpecialPage extends AuthManagerSpecialPage {
                                $this->authAction = $this->isSignup() ? AuthManager::ACTION_CREATE_CONTINUE
                                        : AuthManager::ACTION_LOGIN_CONTINUE;
                                $this->authRequests = $response->neededRequests;
-                               $this->mainLoginForm( $response->neededRequests, $response->message, 'warning' );
+                               $this->mainLoginForm( $response->neededRequests, $response->message, $response->messageType );
                                break;
                        default:
                                throw new LogicException( 'invalid AuthenticationResponse' );
                }
        }
 
+       /**
+        * Determine if the login form can be bypassed. This will be the case when no more than one
+        * button is present and no other user input fields that are not marked as 'skippable' are
+        * present. If the login form were not bypassed, the user would be presented with a
+        * superfluous page on which they must press the single button to proceed with login.
+        * Not only does this cause an additional mouse click and page load, it confuses users,
+        * especially since there are a help link and forgotten password link that are
+        * provided on the login page that do not apply to this situation.
+        *
+        * @param string|null &$button_name if the form has a single button, returns
+        *   the name of the button; otherwise, returns null
+        * @return bool
+        */
+       private function canBypassForm( &$button_name ) {
+               $button_name = null;
+               if ( $this->isContinued() ) {
+                       return false;
+               }
+               $fields = AuthenticationRequest::mergeFieldInfo( $this->authRequests );
+               foreach ( $fields as $fieldname => $field ) {
+                       if ( !isset( $field['type'] ) ) {
+                               return false;
+                       }
+                       if ( !empty( $field['skippable'] ) ) {
+                               continue;
+                       }
+                       if ( $field['type'] === 'button' ) {
+                               if ( $button_name !== null ) {
+                                       $button_name = null;
+                                       return false;
+                               } else {
+                                       $button_name = $fieldname;
+                               }
+                       } elseif ( $field['type'] !== 'null' ) {
+                               return false;
+                       }
+               }
+               return true;
+       }
+
        /**
         * Show the success page.
         *
@@ -494,7 +547,21 @@ abstract class LoginSignupSpecialPage extends AuthManagerSpecialPage {
 
                $form = $this->getAuthForm( $requests, $this->authAction, $msg, $msgtype );
                $form->prepareForm();
-               $formHtml = $form->getHTML( $msg ? Status::newFatal( $msg ) : false );
+
+               $submitStatus = Status::newGood();
+               if ( $msg && $msgtype === 'warning' ) {
+                       $submitStatus->warning( $msg );
+               } elseif ( $msg && $msgtype === 'error' ) {
+                       $submitStatus->fatal( $msg );
+               }
+
+               // warning header for non-standard workflows (e.g. security reauthentication)
+               if ( !$this->isSignup() && $this->getUser()->isLoggedIn() ) {
+                       $reauthMessage = $this->securityLevel ? 'userlogin-reauth' : 'userlogin-loggedin';
+                       $submitStatus->warning( $reauthMessage, $this->getUser()->getName() );
+               }
+
+               $formHtml = $form->getHTML( $submitStatus );
 
                $out->addHTML( $this->getPageHtml( $formHtml ) );
        }
@@ -585,7 +652,7 @@ abstract class LoginSignupSpecialPage extends AuthManagerSpecialPage {
                $this->fakeTemplate = $fakeTemplate; // FIXME there should be a saner way to pass this to the hook
                // this will call onAuthChangeFormFields()
                $formDescriptor = static::fieldInfoToFormDescriptor( $requests, $fieldInfo, $this->authAction );
-               $this->postProcessFormDescriptor( $formDescriptor );
+               $this->postProcessFormDescriptor( $formDescriptor, $requests );
 
                $context = $this->getContext();
                if ( $context->getRequest() !== $this->getRequest() ) {
@@ -616,89 +683,6 @@ abstract class LoginSignupSpecialPage extends AuthManagerSpecialPage {
                        $form->setId( 'userlogin2' );
                }
 
-               // add pre/post text
-               // header used by ConfirmEdit, CondfirmAccount, Persona, WikimediaIncubator, SemanticSignup
-               // should be above the error message but HTMLForm doesn't support that
-               $form->addHeaderText( $fakeTemplate->get( 'header' ) );
-
-               // FIXME the old form used this for error/warning messages which does not play well with
-               // HTMLForm (maybe it could with a subclass?); for now only display it for signups
-               // (where the JS username validation needs it) and alway empty
-               if ( $this->isSignup() ) {
-                       // used by the mediawiki.special.userlogin.signup.js module
-                       $statusAreaAttribs = [ 'id' => 'mw-createacct-status-area' ];
-                       // $statusAreaAttribs += $msg ? [ 'class' => "{$msgType}box" ] : [ 'style' => 'display: none;' ];
-                       $form->addHeaderText( Html::element( 'div', $statusAreaAttribs ) );
-               }
-
-               // header used by MobileFrontend
-               $form->addHeaderText( $fakeTemplate->get( 'formheader' ) );
-
-               // blank signup footer for site customization
-               if ( $this->isSignup() && $this->showExtraInformation() ) {
-                       // Use signupend-https for HTTPS requests if it's not blank, signupend otherwise
-                       $signupendMsg = $this->msg( 'signupend' );
-                       $signupendHttpsMsg = $this->msg( 'signupend-https' );
-                       if ( !$signupendMsg->isDisabled() ) {
-                               $signupendText = ( $usingHTTPS && !$signupendHttpsMsg->isBlank() )
-                                       ? $signupendHttpsMsg ->parse() : $signupendMsg->parse();
-                               $form->addPostText( Html::rawElement( 'div', [ 'id' => 'signupend' ], $signupendText ) );
-                       }
-               }
-
-               // warning header for non-standard workflows (e.g. security reauthentication)
-               if ( !$this->isSignup() && $this->getUser()->isLoggedIn() ) {
-                       $reauthMessage = $this->securityLevel ? 'userlogin-reauth' : 'userlogin-loggedin';
-                       $form->addHeaderText( Html::rawElement( 'div', [ 'class' => 'warningbox' ],
-                               $this->msg( $reauthMessage )->params( $this->getUser()->getName() )->parse() ) );
-               }
-
-               if ( !$this->isSignup() && $this->showExtraInformation() ) {
-                       $passwordReset = new PasswordReset( $this->getConfig(), AuthManager::singleton() );
-                       if ( $passwordReset->isAllowed( $this->getUser() ) ) {
-                               $form->addFooterText( Html::rawElement(
-                                       'div',
-                                       [ 'class' => 'mw-ui-vform-field mw-form-related-link-container' ],
-                                       Linker::link(
-                                               SpecialPage::getTitleFor( 'PasswordReset' ),
-                                               $this->msg( 'userlogin-resetpassword-link' )->escaped()
-                                       )
-                               ) );
-                       }
-
-                       // Don't show a "create account" link if the user can't.
-                       if ( $this->showCreateAccountLink() ) {
-                               // link to the other action
-                               $linkTitle = $this->getTitleFor( $this->isSignup() ? 'Userlogin' :'CreateAccount' );
-                               $linkq = $this->getReturnToQueryStringFragment();
-                               // Pass any language selection on to the mode switch link
-                               if ( $wgLoginLanguageSelector && $this->mLanguage ) {
-                                       $linkq .= '&uselang=' . $this->mLanguage;
-                               }
-
-                               $loggedIn = $this->getUser()->isLoggedIn();
-                               $createOrLoginHtml = Html::rawElement( 'div',
-                                       [ 'id' => 'mw-createaccount' . ( !$loggedIn ? '-cta' : '' ),
-                                               'class' => ( $loggedIn ? 'mw-form-related-link-container' : 'mw-ui-vform-field' ) ],
-                                       ( $loggedIn ? '' : $this->msg( 'userlogin-noaccount' )->escaped() )
-                                       . Html::element( 'a',
-                                               [
-                                                       'id' => 'mw-createaccount-join' . ( $loggedIn ? '-loggedin' : '' ),
-                                                       'href' => $linkTitle->getLocalURL( $linkq ),
-                                                       'class' => ( $loggedIn ? '' : 'mw-ui-button' ),
-                                                       'tabindex' => 100,
-                                               ],
-                                               $this->msg(
-                                                       ( $this->getUser()->isLoggedIn() ?
-                                                               'userlogin-createanother' :
-                                                               'userlogin-joinproject'
-                                                       ) )->escaped()
-                                       )
-                               );
-                               $form->addFooterText( $createOrLoginHtml );
-                       }
-               }
-
                $form->suppressDefaultSubmit();
 
                $this->authForm = $form;
@@ -837,7 +821,7 @@ abstract class LoginSignupSpecialPage extends AuthManagerSpecialPage {
                array $requests, array $fieldInfo, array &$formDescriptor, $action
        ) {
                $coreFieldDescriptors = $this->getFieldDefinitions( $this->fakeTemplate );
-               $specialFields = array_merge( [ 'extraInput', 'linkcontainer', 'entryError' ],
+               $specialFields = array_merge( [ 'extraInput' ],
                        array_keys( $this->fakeTemplate->getExtraInputDefinitions() ) );
 
                // keep the ordering from getCoreFieldDescriptors() where there is no explicit weight
@@ -846,14 +830,19 @@ abstract class LoginSignupSpecialPage extends AuthManagerSpecialPage {
                                $formDescriptor[$fieldName] : [];
 
                        // remove everything that is not in the fieldinfo, is not marked as a supplemental field
-                       // to something in the fieldinfo, and is not a generic or B/C field or a submit button
+                       // to something in the fieldinfo, is not B/C for the pre-AuthManager templates,
+                       // and is not an info field or a submit button
                        if (
                                !isset( $fieldInfo[$fieldName] )
                                && (
                                        !isset( $coreField['baseField'] )
                                        || !isset( $fieldInfo[$coreField['baseField']] )
-                               ) && !in_array( $fieldName, $specialFields, true )
-                               && ( !isset( $coreField['type'] ) || $coreField['type'] !== 'submit' )
+                               )
+                               && !in_array( $fieldName, $specialFields, true )
+                               && (
+                                       !isset( $coreField['type'] )
+                                       || !in_array( $coreField['type'], [ 'submit', 'info' ], true )
+                               )
                        ) {
                                $coreFieldDescriptors[$fieldName] = null;
                                continue;
@@ -892,13 +881,12 @@ abstract class LoginSignupSpecialPage extends AuthManagerSpecialPage {
         * @return array
         */
        protected function getFieldDefinitions( $template ) {
-               global $wgEmailConfirmToEdit;
+               global $wgEmailConfirmToEdit, $wgLoginLanguageSelector;
 
                $isLoggedIn = $this->getUser()->isLoggedIn();
                $continuePart = $this->isContinued() ? 'continue-' : '';
                $anotherPart = $isLoggedIn ? 'another-' : '';
-               $expiration = $this->getRequest()->getSession()->getProvider()
-                       ->getRememberUserDuration();
+               $expiration = $this->getRequest()->getSession()->getProvider()->getRememberUserDuration();
                $expirationDays = ceil( $expiration / ( 3600 * 24 ) );
                $secureLoginLink = '';
                if ( $this->mSecureLoginUrl ) {
@@ -907,13 +895,25 @@ abstract class LoginSignupSpecialPage extends AuthManagerSpecialPage {
                                'class' => 'mw-ui-flush-right mw-secure',
                        ], $this->msg( 'userlogin-signwithsecure' )->text() );
                }
+               $usernameHelpLink = '';
+               if ( !$this->msg( 'createacct-helpusername' )->isDisabled() ) {
+                       $usernameHelpLink = Html::rawElement( 'span', [
+                               'class' => 'mw-ui-flush-right',
+                       ], $this->msg( 'createacct-helpusername' )->parse() );
+               }
 
                if ( $this->isSignup() ) {
                        $fieldDefinitions = [
+                               'statusarea' => [
+                                       // used by the mediawiki.special.userlogin.signup.js module for error display
+                                       // FIXME merge this with HTMLForm's normal status (error) area
+                                       'type' => 'info',
+                                       'raw' => true,
+                                       'default' => Html::element( 'div', [ 'id' => 'mw-createacct-status-area' ] ),
+                                       'weight' => -105,
+                               ],
                                'username' => [
-                                       'label-message' => 'userlogin-yourname',
-                                       // FIXME help-message does not match old formatting
-                                       'help-message' => 'createacct-helpusername',
+                                       'label-raw' => $this->msg( 'userlogin-yourname' )->escaped() . $usernameHelpLink,
                                        'id' => 'wpName2',
                                        'placeholder-message' => $isLoggedIn ? 'createacct-another-username-ph'
                                                : 'userlogin-yourname-ph',
@@ -1056,6 +1056,7 @@ abstract class LoginSignupSpecialPage extends AuthManagerSpecialPage {
                                ],
                        ];
                }
+
                $fieldDefinitions['username'] += [
                        'type' => 'text',
                        'name' => 'wpName',
@@ -1072,6 +1073,19 @@ abstract class LoginSignupSpecialPage extends AuthManagerSpecialPage {
                        // 'required' => true,
                ];
 
+               if ( $template->get( 'header' ) || $template->get( 'formheader' ) ) {
+                       // B/C for old extensions that haven't been converted to AuthManager (or have been
+                       // but somebody is using the old version) and still use templates via the
+                       // UserCreateForm/UserLoginForm hook.
+                       // 'header' used by ConfirmEdit, CondfirmAccount, Persona, WikimediaIncubator, SemanticSignup
+                       // 'formheader' used by MobileFrontend
+                       $fieldDefinitions['header'] = [
+                               'type' => 'info',
+                               'raw' => true,
+                               'default' => $template->get( 'header' ) ?: $template->get( 'formheader' ),
+                               'weight' => - 110,
+                       ];
+               }
                if ( $this->mEntryError ) {
                        $fieldDefinitions['entryError'] = [
                                'type' => 'info',
@@ -1082,9 +1096,77 @@ abstract class LoginSignupSpecialPage extends AuthManagerSpecialPage {
                                'weight' => -100,
                        ];
                }
-
                if ( !$this->showExtraInformation() ) {
-                       unset( $fieldDefinitions['linkcontainer'] );
+                       unset( $fieldDefinitions['linkcontainer'], $fieldDefinitions['signupend'] );
+               }
+               if ( $this->isSignup() && $this->showExtraInformation() ) {
+                       // blank signup footer for site customization
+                       // uses signupend-https for HTTPS requests if it's not blank, signupend otherwise
+                       $signupendMsg = $this->msg( 'signupend' );
+                       $signupendHttpsMsg = $this->msg( 'signupend-https' );
+                       if ( !$signupendMsg->isDisabled() ) {
+                               $usingHTTPS = $this->getRequest()->getProtocol() === 'https';
+                               $signupendText = ( $usingHTTPS && !$signupendHttpsMsg->isBlank() )
+                                       ? $signupendHttpsMsg ->parse() : $signupendMsg->parse();
+                               $fieldDefinitions['signupend'] = [
+                                       'type' => 'info',
+                                       'raw' => true,
+                                       'default' => Html::rawElement( 'div', [ 'id' => 'signupend' ], $signupendText ),
+                                       'weight' => 225,
+                               ];
+                       }
+               }
+               if ( !$this->isSignup() && $this->showExtraInformation() ) {
+                       $passwordReset = new PasswordReset( $this->getConfig(), AuthManager::singleton() );
+                       if ( $passwordReset->isAllowed( $this->getUser() ) ) {
+                               $fieldDefinitions['passwordReset'] = [
+                                       'type' => 'info',
+                                       'raw' => true,
+                                       'cssclass' => 'mw-form-related-link-container',
+                                       'default' => Linker::link(
+                                               SpecialPage::getTitleFor( 'PasswordReset' ),
+                                               $this->msg( 'userlogin-resetpassword-link' )->escaped()
+                                       ),
+                                       'weight' => 230,
+                               ];
+                       }
+
+                       // Don't show a "create account" link if the user can't.
+                       if ( $this->showCreateAccountLink() ) {
+                               // link to the other action
+                               $linkTitle = $this->getTitleFor( $this->isSignup() ? 'Userlogin' :'CreateAccount' );
+                               $linkq = $this->getReturnToQueryStringFragment();
+                               // Pass any language selection on to the mode switch link
+                               if ( $wgLoginLanguageSelector && $this->mLanguage ) {
+                                       $linkq .= '&uselang=' . $this->mLanguage;
+                               }
+                               $loggedIn = $this->getUser()->isLoggedIn();
+
+                               $fieldDefinitions['createOrLogin'] = [
+                                       'type' => 'info',
+                                       'raw' => true,
+                                       'linkQuery' => $linkq,
+                                       'default' => function ( $params ) use ( $loggedIn, $linkTitle ) {
+                                               return Html::rawElement( 'div',
+                                                       [ 'id' => 'mw-createaccount' . ( !$loggedIn ? '-cta' : '' ),
+                                                               'class' => ( $loggedIn ? 'mw-form-related-link-container' : 'mw-ui-vform-field' ) ],
+                                                       ( $loggedIn ? '' : $this->msg( 'userlogin-noaccount' )->escaped() )
+                                                       . Html::element( 'a',
+                                                               [
+                                                                       'id' => 'mw-createaccount-join' . ( $loggedIn ? '-loggedin' : '' ),
+                                                                       'href' => $linkTitle->getLocalURL( $params['linkQuery'] ),
+                                                                       'class' => ( $loggedIn ? '' : 'mw-ui-button' ),
+                                                                       'tabindex' => 100,
+                                                               ],
+                                                               $this->msg(
+                                                                       $loggedIn ? 'userlogin-createanother' : 'userlogin-joinproject'
+                                                               )->escaped()
+                                                       )
+                                               );
+                                       },
+                                       'weight' => 235,
+                               ];
+                       }
                }
 
                $fieldDefinitions = $this->getBCFieldDefinitions( $fieldDefinitions, $template );
@@ -1237,7 +1319,7 @@ abstract class LoginSignupSpecialPage extends AuthManagerSpecialPage {
        /**
         * @param array $formDescriptor
         */
-       protected function postProcessFormDescriptor( &$formDescriptor ) {
+       protected function postProcessFormDescriptor( &$formDescriptor, $requests ) {
                // Pre-fill username (if not creating an account, T46775).
                if (
                        isset( $formDescriptor['username'] ) &&
@@ -1255,7 +1337,7 @@ abstract class LoginSignupSpecialPage extends AuthManagerSpecialPage {
 
                // don't show a submit button if there is nothing to submit (i.e. the only form content
                // is other submit buttons, for redirect flows)
-               if ( !$this->needsSubmitButton( $formDescriptor ) ) {
+               if ( !$this->needsSubmitButton( $requests ) ) {
                        unset( $formDescriptor['createaccount'], $formDescriptor['loginattempt'] );
                }