如何在Flutter桌面应用中实现Google OAuth2或Microsoft(Azure) OAuth2登录?
如何在Flutter桌面应用中实现Google OAuth2或Microsoft(Azure) OAuth2登录?
回答自己的问题。获得 OAuth2 结果的总体过程如下:
http://localhost:#####/
,使 dart 应用程序监听它。设置要支持的 OAuth 流程。 这是我使用的:
授权重定向 URI
的 localhost url:http://localhost/
enum LoginProvider { google, azure }
extension LoginProviderExtension on LoginProvider {
String get key {
switch (this) {
case LoginProvider.google:
return 'google';
case LoginProvider.azure:
return 'azure';
}
}
String get authorizationEndpoint {
switch (this) {
case LoginProvider.google:
return "https://accounts.google.com/o/oauth2/v2/auth";
case LoginProvider.azure:
return "https://login.microsoftonline.com/common/oauth2/v2.0/authorize";
}
}
String get tokenEndpoint {
switch (this) {
case LoginProvider.google:
return "https://oauth2.googleapis.com/token";
case LoginProvider.azure:
return "https://login.microsoftonline.com/common/oauth2/v2.0/token";
}
}
String get clientId {
switch (this) {
case LoginProvider.google:
return "GOOGLE_CLIENT_ID";
case LoginProvider.azure:
return "AZURE_CLIENT_ID";
}
}
String? get clientSecret {
switch (this) {
case LoginProvider.google:
return "GOOGLE_SECRET"; // if applicable
case LoginProvider.azure:
return "AZURE_SECRET"; // if applicable
}
}
List<String> get scopes {
return ['openid', 'email']; // OAuth Scopes
}
}
设置OAuth管理器以便监听oauth2重定向
import 'dart:async';
import 'dart:io';
import 'package:http/http.dart' as http;
import 'package:oauth2/oauth2.dart' as oauth2;
import 'package:url_launcher/url_launcher.dart';
import 'package:window_to_front/window_to_front.dart';
class DesktopLoginManager {
HttpServer? redirectServer;
oauth2.Client? client;
// Launch the URL in the browser using url_launcher
Future<void> redirect(Uri authorizationUrl) async {
var url = authorizationUrl.toString();
if (await canLaunch(url)) {
await launch(url);
} else {
throw Exception('Could not launch $url');
}
}
Future<Map<String, String>> listen() async {
var request = await redirectServer!.first;
var params = request.uri.queryParameters;
await WindowToFront.activate(); // Using window_to_front package to bring the window to the front after successful login.
request.response.statusCode = 200;
request.response.headers.set('content-type', 'text/plain');
request.response.writeln('Authenticated! You can close this tab.');
await request.response.close();
await redirectServer!.close();
redirectServer = null;
return params;
}
}
class DesktopOAuthManager extends DesktopLoginManager {
final LoginProvider loginProvider;
DesktopOAuthManager({
required this.loginProvider,
}) : super();
void login() async {
await redirectServer?.close();
// Bind to an ephemeral port on localhost
redirectServer = await HttpServer.bind('localhost', 0);
final redirectURL = 'http://localhost:${redirectServer!.port}/auth';
var authenticatedHttpClient =
await _getOAuth2Client(Uri.parse(redirectURL));
print("CREDENTIALS ${authenticatedHttpClient.credentials}");
/// HANDLE SUCCESSFULL LOGIN RESPONSE HERE
return;
}
Future<oauth2.Client> _getOAuth2Client(Uri redirectUrl) async {
var grant = oauth2.AuthorizationCodeGrant(
loginProvider.clientId,
Uri.parse(loginProvider.authorizationEndpoint),
Uri.parse(loginProvider.tokenEndpoint),
httpClient: _JsonAcceptingHttpClient(),
secret: loginProvider.clientSecret,
);
var authorizationUrl =
grant.getAuthorizationUrl(redirectUrl, scopes: loginProvider.scopes);
await redirect(authorizationUrl);
var responseQueryParameters = await listen();
var client =
await grant.handleAuthorizationResponse(responseQueryParameters);
return client;
}
}
class _JsonAcceptingHttpClient extends http.BaseClient {
final _httpClient = http.Client();
@override
Future<http.StreamedResponse> send(http.BaseRequest request) {
request.headers['Accept'] = 'application/json';
return _httpClient.send(request);
}
}
使用以下步骤开始登录流程
谷歌:
if (Platform.isMacOS || Platform.isWindows || Platform.isLinux) {
final provider = DesktopOAuthManager(loginProvider: LoginProvider.google);
provider.login();
}
微软 Azure 云服务:
if (Platform.isMacOS || Platform.isWindows || Platform.isLinux) {
final provider = DesktopOAuthManager(loginProvider: LoginProvider. azure);
provider.login();
}
完成了!
补充@Neal的好答案,
如果您想让他的代码也返回刷新令牌,请添加以下内容:
var authorizationUrl =
grant.getAuthorizationUrl(redirectUrl, scopes: loginProvider.scopes);
// ADD THIS:
authorizationUrl = authorizationUrl.replace(queryParameters: {
...authorizationUrl.queryParameters,
"access_type": "offline",
});
http://localhost/auth
(无法编辑我的上一条评论) - Oded Ben Dov