fluffychat/lib/pages/homeserver_picker.dart

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import 'dart:async';
import 'package:flutter/foundation.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter_gen/gen_l10n/l10n.dart';
import 'package:flutter_inappwebview/flutter_inappwebview.dart';
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import 'package:future_loading_dialog/future_loading_dialog.dart';
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import 'package:matrix/matrix.dart';
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import 'package:uni_links/uni_links.dart';
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import 'package:url_launcher/url_launcher.dart';
import 'package:vrouter/vrouter.dart';
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import 'package:fluffychat/config/app_config.dart';
import 'package:fluffychat/config/setting_keys.dart';
import 'package:fluffychat/pages/views/homeserver_picker_view.dart';
import 'package:fluffychat/utils/famedlysdk_store.dart';
import 'package:fluffychat/utils/platform_infos.dart';
import 'package:fluffychat/widgets/matrix.dart';
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import '../main.dart';
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import '../utils/localized_exception_extension.dart';
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class HomeserverPicker extends StatefulWidget {
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const HomeserverPicker({Key key}) : super(key: key);
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@override
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HomeserverPickerController createState() => HomeserverPickerController();
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}
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class HomeserverPickerController extends State<HomeserverPicker> {
bool isLoading = false;
String domain = AppConfig.defaultHomeserver;
final TextEditingController homeserverController =
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TextEditingController(text: AppConfig.defaultHomeserver);
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StreamSubscription _intentDataStreamSubscription;
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String error;
Timer _coolDown;
void setDomain(String domain) {
this.domain = domain;
_coolDown?.cancel();
if (domain.isNotEmpty) {
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_coolDown = Timer(const Duration(seconds: 1), checkHomeserverAction);
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}
}
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void _loginWithToken(String token) {
if (token?.isEmpty ?? true) return;
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showFutureLoadingDialog(
context: context,
future: () async {
if (Matrix.of(context).getLoginClient().homeserver == null) {
await Matrix.of(context).getLoginClient().checkHomeserver(
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await Store()
.getItem(HomeserverPickerController.ssoHomeserverKey),
);
}
await Matrix.of(context).getLoginClient().login(
LoginType.mLoginToken,
token: token,
initialDeviceDisplayName: PlatformInfos.clientName,
);
},
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);
}
void _processIncomingUris(String text) async {
if (text == null || !text.startsWith(AppConfig.appOpenUrlScheme)) return;
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await browser?.close();
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VRouter.of(context).to('/home');
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final token = Uri.parse(text).queryParameters['loginToken'];
if (token != null) _loginWithToken(token);
}
void _initReceiveUri() {
if (!PlatformInfos.isMobile) return;
// For receiving shared Uris
_intentDataStreamSubscription = linkStream.listen(_processIncomingUris);
if (FluffyChatApp.gotInitialLink == false) {
FluffyChatApp.gotInitialLink = true;
getInitialLink().then(_processIncomingUris);
}
}
@override
void initState() {
super.initState();
_initReceiveUri();
if (kIsWeb) {
WidgetsBinding.instance.addPostFrameCallback((_) {
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final token = Matrix.of(context).widget.queryParameters['loginToken'];
if (token != null) _loginWithToken(token);
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});
}
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checkHomeserverAction();
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}
@override
void dispose() {
super.dispose();
_intentDataStreamSubscription?.cancel();
}
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/// Starts an analysis of the given homeserver. It uses the current domain and
/// makes sure that it is prefixed with https. Then it searches for the
/// well-known information and forwards to the login page depending on the
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/// login type.
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Future<void> checkHomeserverAction() async {
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_coolDown?.cancel();
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try {
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if (domain.isEmpty) throw L10n.of(context).changeTheHomeserver;
var homeserver = domain;
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if (!homeserver.startsWith('https://')) {
homeserver = 'https://$homeserver';
}
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setState(() {
error = _rawLoginTypes = registrationSupported = null;
isLoading = true;
});
final wellKnown =
await Matrix.of(context).getLoginClient().checkHomeserver(homeserver);
var jitsi = wellKnown?.additionalProperties
?.tryGet<Map<String, dynamic>>('im.vector.riot.jitsi')
?.tryGet<String>('preferredDomain');
if (jitsi != null) {
if (!jitsi.endsWith('/')) {
jitsi += '/';
}
Logs().v('Found custom jitsi instance $jitsi');
await Matrix.of(context)
.store
.setItem(SettingKeys.jitsiInstance, jitsi);
AppConfig.jitsiInstance = jitsi;
}
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} catch (e) {
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setState(() => error = (e as Object).toLocalizedString(context));
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} finally {
if (mounted) {
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setState(() => isLoading = false);
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}
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}
}
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Map<String, dynamic> _rawLoginTypes;
bool registrationSupported;
List<IdentityProvider> get identityProviders {
if (!ssoLoginSupported) return [];
final rawProviders = _rawLoginTypes.tryGetList('flows').singleWhere(
(flow) =>
flow['type'] == AuthenticationTypes.sso)['identity_providers'];
final list = (rawProviders as List)
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.map((json) => IdentityProvider.fromJson(json))
.toList();
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if (PlatformInfos.isCupertinoStyle) {
list.sort((a, b) => a.brand == 'apple' ? -1 : 1);
}
return list;
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}
bool get passwordLoginSupported =>
Matrix.of(context)
.client
.supportedLoginTypes
.contains(AuthenticationTypes.password) &&
_rawLoginTypes
.tryGetList('flows')
.any((flow) => flow['type'] == AuthenticationTypes.password);
bool get ssoLoginSupported =>
Matrix.of(context)
.client
.supportedLoginTypes
.contains(AuthenticationTypes.sso) &&
_rawLoginTypes
.tryGetList('flows')
.any((flow) => flow['type'] == AuthenticationTypes.sso);
Future<Map<String, dynamic>> getLoginTypes() async {
_rawLoginTypes ??= await Matrix.of(context).getLoginClient().request(
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RequestType.GET,
'/client/r0/login',
);
if (registrationSupported == null) {
try {
await Matrix.of(context).getLoginClient().register();
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registrationSupported = true;
} on MatrixException catch (e) {
registrationSupported = e.requireAdditionalAuthentication ?? false;
}
}
return _rawLoginTypes;
}
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ChromeSafariBrowser browser;
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static const String ssoHomeserverKey = 'sso-homeserver';
void ssoLoginAction(String id) {
if (kIsWeb) {
// We store the homserver in the local storage instead of a redirect
// parameter because of possible CSRF attacks.
Store().setItem(ssoHomeserverKey,
Matrix.of(context).getLoginClient().homeserver.toString());
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}
final redirectUrl = kIsWeb
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? AppConfig.webBaseUrl + '/#/'
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: AppConfig.appOpenUrlScheme.toLowerCase() + '://login';
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final url =
'${Matrix.of(context).getLoginClient().homeserver?.toString()}/_matrix/client/r0/login/sso/redirect/${Uri.encodeComponent(id)}?redirectUrl=${Uri.encodeQueryComponent(redirectUrl)}';
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if (PlatformInfos.isMobile) {
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browser ??= ChromeSafariBrowser();
browser.open(url: Uri.parse(url));
} else {
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launch(redirectUrl);
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}
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}
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void signUpAction() => VRouter.of(context).to(
'signup',
queryParameters: {'domain': domain},
);
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@override
Widget build(BuildContext context) {
Matrix.of(context).navigatorContext = context;
return HomeserverPickerView(this);
}
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}
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class IdentityProvider {
final String id;
final String name;
final String icon;
final String brand;
IdentityProvider({this.id, this.name, this.icon, this.brand});
factory IdentityProvider.fromJson(Map<String, dynamic> json) =>
IdentityProvider(
id: json['id'],
name: json['name'],
icon: json['icon'],
brand: json['brand'],
);
}