我为了通过OAuth认证,并使用谷歌驱动蜜蜂一直在看的Oauth净谷歌的API。
具体而言,我想用一个刷新令牌我已经存储起来,以便用它来实例化一个Google云端硬盘服务。
这似乎用“GoogleWebAuthorizationBroker.AuthorizeAsync”,但我不知道怎么用这个方法有刷新令牌,而不是你似乎在这个例子中可以喂养它的客户端机密。
如果我理解正确的话,你是问你怎么能创建一个新的谷歌服务,基于现有的刷新令牌。
所以,你可以做到以下几点:
var token = new TokenResponse { RefreshToken = "YOUR_REFRESH_TOKEN_HERE" };
var credentials = new UserCredential(new GoogleAuthorizationCodeFlow(
new GoogleAuthorizationCodeFlow.Initializer
{
ClientSecrets = [your_client_secrets_here]
}), "user", token);
然后,你可以通过你的凭据服务的初始化。
通过这样做上面的,你刷新令牌和客户端秘密GoogleAuthorizationCodeFlow将获得基于新的访问令牌。
请注意,您必须拥有客户端秘密在这里,没有这一点,你将无法获得访问令牌。
该client_secrets.json中包含客户端ID和客户端密钥(其中有您的OAuth 2.0信息您的应用程序)。
我想,这篇文章将更好地解释了如何的OAuth 2.0尤其是谷歌访问企业应用套件API,如果你正在建设一个Web应用程序。
https://developers.google.com/accounts/docs/OAuth2WebServer
如果你有兴趣在编码例子,有一个在计算器:Google+ API: How can I use RefreshTokens to avoid requesting access every time my app launches?
GoogleWebAuthorizationBroker要求您发送iDataStore的implimtation在这种情况下FileDatastore发送。 FileDataStore存储在%APPDATA%的数据。如果你想使用一个refreshtoken你到别的什么地方保存,你需要创建自己的iDataStore的implimitation。
对于实际数据存储我有点长的代码张贴在这里。 http://daimto.com/google-oauth2-csharp/
然后您可以使用它就像你的FileDataStore
//Now we load our saved refreshToken.
StoredResponse myStoredResponse = new StoredResponse(tbRefreshToken.Text);
// Now we pass a SavedDatastore with our StoredResponse.
using (var stream = new FileStream("client_secrets.json", FileMode.Open,
FileAccess.Read))
{
GoogleWebAuthorizationBroker.Folder = "Tasks.Auth.Store";
StoredCredential = GoogleWebAuthorizationBroker.AuthorizeAsync(
GoogleClientSecrets.Load(stream).Secrets,
new[] { DriveService.Scope.Drive,
DriveService.Scope.DriveFile },
"user",
CancellationToken.None,
new SavedDataStore(myStoredResponse)).Result;
}
有连接到该教程的示例项目。
要使用刷新令牌:
var init = new GoogleAuthorizationCodeFlow.Initializer
{
ClientSecrets = new ClientSecrets
{
ClientId = "OAuth_Client_ID_From_GoogleAPI",
ClientSecret = "OAuth_Client_Secret"
},
Scopes = new string[] {"MY_SCOPES"}
};
var token = new TokenResponse { RefreshToken = "MY_REFRESH_TOKEN" };
var credential = new UserCredential(new Google.Apis.Auth.OAuth2.Flows.AuthorizationCodeFlow(init), "", token);
//init your Google API service, in this example Google Directory
var service = new DirectoryService(new BaseClientService.Initializer()
{
HttpClientInitializer = credential,
ApplicationName = "",
});
如果你没有什么刷新令牌?最简单的是遵循谷歌SDK文档的说明。首先下载谷歌从API项目凭据。命名该文件credentials.json
。然后运行的代码:
using (var stream =
new FileStream("credentials.json", FileMode.Open, FileAccess.Read))
{
// The file token.json stores the user's access and refresh tokens, and is created
// automatically when the authorization flow completes for the first time.
string credPath = "token.json";
credential = GoogleWebAuthorizationBroker.AuthorizeAsync(
GoogleClientSecrets.Load(stream).Secrets,
Scopes,
"user",
CancellationToken.None,
new FileDataStore(credPath, true)).Result;
Console.WriteLine("Credential file saved to: " + credPath);
}
这应该创建一个文件夹token.json和文件夹里面有你的refresh_token另一个JSON文件。
{
"access_token" : "asdf",
"token_type" : "Bearer",
"expires_in" : 3600,
"refresh_token" : "XXX",
"scope" : "https://www.googleapis.com/auth/admin.directory.user.readonly",
"Issued" : "2019-02-08T12:37:06.157-08:00",
"IssuedUtc" : "2019-02-08T20:37:06.157Z"
}
我喜欢,因为当找不到令牌就自动启动一个网页浏览器不使用GoogleWebAuthorizationBroker。我更喜欢通过接入码获取刷新令牌的老同学的方式。这是非常相似的使用谷歌OAuthUtil.CreateOAuth2AuthorizationUrl
和OAuthUtil.GetAccessToken
在谷歌的传统OAuth的API来。
var a = new Google.Apis.Auth.OAuth2.Flows.GoogleAuthorizationCodeFlow.Initializer
{
ClientSecrets = new ClientSecrets
{
ClientId = "asdf",
ClientSecret = "hij"
},
Scopes = Scopes
};
var flow = new Google.Apis.Auth.OAuth2.Flows.AuthorizationCodeFlow(a);
var url = flow.CreateAuthorizationCodeRequest(GoogleAuthConsts.InstalledAppRedirectUri).Build().AbsoluteUri;
Console.WriteLine("Go to this URL and get access code: " + url);
Console.Write("Enter access code: ");
var code = Console.ReadLine();
Console.WriteLine("Fetching token for code: _" + code + "_");
var r = flow.ExchangeCodeForTokenAsync("user", code, GoogleAuthConsts.InstalledAppRedirectUri, CancellationToken.None).Result;
Console.WriteLine(Newtonsoft.Json.JsonConvert.SerializeObject(r));