feat: Implement sso

lib/app_config.dart

@@ -10,6 +10,7 @@ abstract class AppConfig {
   static const bool enableRegistration = true;
   static String _privacyUrl = 'https://fluffychat.im/en/privacy.html';
   static String get privacyUrl => _privacyUrl;
+  static const String appId = 'im.fluffychat.FluffyChat';
   static const String sourceCodeUrl = 'https://gitlab.com/famedly/fluffychat';
   static const String supportUrl =
       'https://gitlab.com/famedly/fluffychat/issues';

lib/components/matrix.dart

@@ -156,8 +156,13 @@ class MatrixState extends State<Matrix> {
           ),
         );
       default:
-        Logs().w('Warning! Cannot handle the stage "$stage"');
-        return;
+        await widget.apl.currentState.pushNamed(
+          '/authwebview/$stage/${uiaRequest.session}',
+          arguments: () => null,
+        );
+        return uiaRequest.completeStage(
+          AuthenticationData(session: uiaRequest.session),
+        );
     }
   }
 

lib/config/routes.dart

@@ -27,6 +27,7 @@ import 'package:fluffychat/views/settings_notifications.dart';
 import 'package:fluffychat/views/settings_style.dart';
 import 'package:fluffychat/views/sign_up.dart';
 import 'package:fluffychat/views/sign_up_password.dart';
+import 'package:fluffychat/views/sso_web_view.dart';
 import 'package:flutter/material.dart';
 
 class FluffyRoutes {
@@ -47,6 +48,8 @@ class FluffyRoutes {
           return ViewData(mainView: (_) => HomeserverPicker());
         case 'login':
           return ViewData(mainView: (_) => Login());
+        case 'sso':
+          return ViewData(mainView: (_) => SsoWebView());
         case 'signup':
           if (parts.length == 5 && parts[2] == 'password') {
             return ViewData(
@@ -129,6 +132,17 @@ class FluffyRoutes {
             mainView: (_) => Archive(),
             emptyView: (_) => EmptyPage(),
           );
+        case 'authwebview':
+          if (parts.length == 4) {
+            return ViewData(
+              mainView: (_) => AuthWebView(
+                parts[2],
+                Uri.decodeComponent(parts[3]),
+                settings.arguments,
+              ),
+            );
+          }
+          break;
         case 'discover':
           return ViewData(
             mainView: (_) =>

lib/views/homeserver_picker.dart

@@ -1,6 +1,7 @@
 import 'dart:math';
 
 import 'package:adaptive_page_layout/adaptive_page_layout.dart';
+import 'package:famedlysdk/famedlysdk.dart';
 import 'package:fluffychat/components/matrix.dart';
 import 'package:fluffychat/app_config.dart';
 import 'package:fluffychat/components/sentry_switch_list_tile.dart';
@@ -30,10 +31,32 @@ class _HomeserverPickerState extends State<HomeserverPicker> {
     }
 
     setState(() => _isLoading = true);
+
+    // Look up well known
+    try {
+      final wellKnown = await MatrixApi(homeserver: Uri.parse(homeserver))
+          .requestWellKnownInformations();
+      homeserver = wellKnown.mHomeserver.baseUrl;
+    } catch (e) {
+      Logs().v('Found no well known information', e);
+    }
+
     try {
-      await Matrix.of(context).client.checkHomeserver(homeserver);
-      await AdaptivePageLayout.of(context)
-          .pushNamed(AppConfig.enableRegistration ? '/signup' : '/login');
+      await Matrix.of(context)
+          .client
+          .checkHomeserver(homeserver, supportedLoginTypes: {
+        AuthenticationTypes.password,
+        if (PlatformInfos.isMobile) AuthenticationTypes.sso
+      });
+      final loginTypes = await Matrix.of(context).client.requestLoginTypes();
+      if (loginTypes.flows
+          .any((flow) => flow.type == AuthenticationTypes.password)) {
+        await AdaptivePageLayout.of(context)
+            .pushNamed(AppConfig.enableRegistration ? '/signup' : '/login');
+      } else if (loginTypes.flows
+          .any((flow) => flow.type == AuthenticationTypes.sso)) {
+        await AdaptivePageLayout.of(context).pushNamed('/sso');
+      }
     } catch (e) {
       // ignore: unawaited_futures
       FlushbarHelper.createError(

lib/views/settings_devices.dart

@@ -22,6 +22,9 @@ class DevicesSettingsState extends State<DevicesSettings> {
 
   void reload() => setState(() => devices = null);
 
+  bool _loadingDeletingDevices = false;
+  String _errorDeletingDevices;
+
   void _removeDevicesAction(BuildContext context, List<Device> devices) async {
     if (await showOkCancelAlertDialog(
           context: context,
@@ -33,33 +36,24 @@ class DevicesSettingsState extends State<DevicesSettings> {
     for (var userDevice in devices) {
       deviceIds.add(userDevice.deviceId);
     }
-    final password = await showTextInputDialog(
-      title: L10n.of(context).pleaseEnterYourPassword,
-      context: context,
-      textFields: [
-        DialogTextField(
-          hintText: '******',
-          obscureText: true,
-          minLines: 1,
-          maxLines: 1,
-        )
-      ],
-    );
-    if (password == null) return;
 
-    final success = await showFutureLoadingDialog(
-      context: context,
-      future: () => matrix.client.deleteDevices(
-        deviceIds,
-        auth: AuthenticationPassword(
-          password: password.single,
-          user: matrix.client.userID,
-          identifier: AuthenticationUserIdentifier(user: matrix.client.userID),
+    try {
+      setState(() {
+        _loadingDeletingDevices = true;
+        _errorDeletingDevices = null;
+      });
+      await matrix.client.uiaRequestBackground(
+        (auth) => matrix.client.deleteDevices(
+          deviceIds,
+          auth: auth,
         ),
-      ),
-    );
-    if (success.error == null) {
+      );
       reload();
+    } catch (e, s) {
+      Logs().v('Error while deleting devices', e, s);
+      setState(() => _errorDeletingDevices = e.toString());
+    } finally {
+      setState(() => _loadingDeletingDevices = false);
     }
   }
 
@@ -127,11 +121,16 @@ class DevicesSettingsState extends State<DevicesSettings> {
               if (devices.isNotEmpty)
                 ListTile(
                   title: Text(
-                    L10n.of(context).removeAllOtherDevices,
+                    _errorDeletingDevices ??
+                        L10n.of(context).removeAllOtherDevices,
                     style: TextStyle(color: Colors.red),
                   ),
-                  trailing: Icon(Icons.delete_outline),
-                  onTap: () => _removeDevicesAction(context, devices),
+                  trailing: _loadingDeletingDevices
+                      ? CircularProgressIndicator()
+                      : Icon(Icons.delete_outline),
+                  onTap: _loadingDeletingDevices
+                      ? null
+                      : () => _removeDevicesAction(context, devices),
                 ),
               Divider(height: 1),
               Expanded(

lib/views/sso_web_view.dart

@@ -0,0 +1,60 @@
+import 'package:famedlysdk/famedlysdk.dart';
+import 'package:fluffychat/components/matrix.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_gen/gen_l10n/l10n.dart';
+import 'package:webview_flutter/webview_flutter.dart';
+
+import '../app_config.dart';
+
+class SsoWebView extends StatefulWidget {
+  @override
+  _SsoWebViewState createState() => _SsoWebViewState();
+}
+
+class _SsoWebViewState extends State<SsoWebView> {
+  bool _loading = false;
+  String _error;
+
+  void _login(BuildContext context, String token) async {
+    setState(() => _loading = true);
+    try {
+      await Matrix.of(context).client.login(
+            type: AuthenticationTypes.token,
+            userIdentifierType: null,
+            token: token,
+            initialDeviceDisplayName: Matrix.of(context).clientName,
+          );
+    } catch (e, s) {
+      Logs().e('Login with token failed', e, s);
+      setState(() => _error = e.toString());
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final url =
+        '${Matrix.of(context).client.homeserver?.toString()}/_matrix/client/r0/login/sso/redirect?redirectUrl=${Uri.encodeQueryComponent(AppConfig.appId.toLowerCase() + '://sso')}';
+    return Scaffold(
+      appBar: AppBar(
+        title: Text(
+          L10n.of(context).logInTo(Matrix.of(context).client.homeserver?.host ??
+              L10n.of(context).oopsSomethingWentWrong),
+        ),
+      ),
+      body: _error != null
+          ? Center(child: Text(_error))
+          : _loading
+              ? Center(child: CircularProgressIndicator())
+              : WebView(
+                  initialUrl: url,
+                  javascriptMode: JavascriptMode.unrestricted,
+                  onPageStarted: (url) {
+                    if (url.startsWith(AppConfig.appId.toLowerCase())) {
+                      _login(context,
+                          Uri.parse(url).queryParameters['loginToken']);
+                    }
+                  },
+                ),
+    );
+  }
+}