Google Analytics OAuth with AccessType = Offline in C#答案

【问题标题】：Google Analytics OAuth with AccessType = Offline in C#Google Analytics OAuth with AccessType = Offline in C#
【发布时间】：2014-02-28 11:59:29
【问题描述】：

我想通过 OAuth 使用 Google Analytics API。

我正在使用这个库： http://code.google.com/p/google-api-dotnet-client/

以下代码用于身份验证：

var credential = GoogleWebAuthorizationBroker.AuthorizeAsync(
    new ClientSecrets { ClientId = "...", ClientSecret = "..." },
    new[] {Google.Apis.Analytics.v3.AnalyticsService.Scope.AnalyticsReadonly},
    "user",
    CancellationToken.None,
    new FileDataStore("Analytics.Auth.Store")).Result;

var service = new Google.Apis.Analytics.v3.AnalyticsService(
    new BaseClientService.Initializer
    {
        HttpClientInitializer = credential,
        ApplicationName = "...",
    });

我可以将它与 refresh_token 一起使用，这样我就不必每隔几天就接受授权请求吗？

类似于这个问题的答案： Service Account Google Analytics OAuth AccessType = Offline C#

【问题讨论】：

标签： c# google-api-dotnet-client

【解决方案1】：

我只知道一种方法：您需要覆盖GoogleAuthorizationCodeRequestUrl，但我不知道如何将它与AuthorizationBroker 一起使用。

internal class ForceOfflineGoogleAuthorizationCodeFlow : GoogleAuthorizationCodeFlow
{
    public ForceOfflineGoogleAuthorizationCodeFlow(AuthorizationCodeFlow.Initializer initializer) : base(initializer) { }

    public override AuthorizationCodeRequestUrl CreateAuthorizationCodeRequest(string redirectUri)
    {
        return new GoogleAuthorizationCodeRequestUrl(new Uri(AuthorizationServerUrl))
                {
                    ClientId = ClientSecrets.ClientId,
                    Scope = string.Join(" ", Scopes),
                    RedirectUri = redirectUri,
                    AccessType = "offline",
                    ApprovalPrompt = "force"
                };
    }
};

看起来他们在代理内部创建了 Flow： GoogleWebAuthorizationBroker.cs

我没有看到任何传递参数或替换AuthorizationCodeFlow的方法

【讨论】：

我们现在使用的是带有证书的服务帐户，它更容易设置，所以我没有尝试这种方法。不过，我将其标记为答案。
Dennis，您是否有关于如何设置您提到的“带有证书的服务帐户”的说明。我一直在尝试，但运气不佳。
你拯救了我的一天。很好的帮助。
非常非常有帮助，非常感谢。很遗憾，无法从 GoogleAuthorizationCodeFlow 将“AccessType”配置为 clientid、scope 等属性。(developers.google.com/accounts/docs/OAuth2WebServer#overview)
顺便说一句，您不能使用“AuthorizationCodeFlow.Initializer 初始化程序”创建构造函数，它必须是“GoogleAuthorizationCodeFlow.Initialier”。

【解决方案2】：

显然我无法发表评论，但要扩展 Darida 的回答：

制作您的自定义 CodeFlow

public class CustomAuthorizationCodeFlow : GoogleAuthorizationCodeFlow
{
    public CustomAuthorizationCodeFlow(GoogleAuthorizationCodeFlow.Initializer initializer) : base(initializer) { }

    public override AuthorizationCodeRequestUrl CreateAuthorizationCodeRequest(String redirectUri)
    {
        return new GoogleAuthorizationCodeRequestUrl(new Uri(AuthorizationServerUrl))
        {
            ClientId = ClientSecrets.ClientId,
            Scope = string.Join(" ", Scopes),
            RedirectUri = redirectUri,
            AccessType = "online",
            ApprovalPrompt = "auto"
        };
    }
}

然后制作一个自定义的 FlowMetadata

public class AppFlowMetadata : FlowMetadata
{
    private static readonly IAuthorizationCodeFlow flow =
        new CustomAuthorizationCodeFlow(new GoogleAuthorizationCodeFlow.Initializer
        {
            ClientSecrets = new ClientSecrets
            {
                ClientId = "...",
                ClientSecret = "..."
            },
            Scopes = new String[] { AnalyticsService.Scope.AnalyticsReadonly },
            DataStore = new EFDataStore(),
        });

    public override IAuthorizationCodeFlow Flow
    {
        get { return flow; }
    }

    public override String GetUserId(Controller controller)
    {
        // In this sample we use the session to store the user identifiers.
        // That's not the best practice, because you should have a logic to identify
        // a user. You might want to use "OpenID Connect".
        // You can read more about the protocol in the following link:
        // https://developers.google.com/accounts/docs/OAuth2Login.

        return String.Format("user-{0}", WebSecurity.GetUserId(controller.User.Identity.Name));
    }
}

然后在Controller中

public ActionResult Sample()
{
    var result = await new AuthorizationCodeMvcApp(this, new AppFlowMetadata()).AuthorizeAsync(cancellationToken);

    if (result.Credential != null)
    {
        var service = new AnalyticsService(new BaseClientService.Initializer()
        {
            HttpClientInitializer = result.Credential,
            ApplicationName = APPLICATION_NAME
        });
   }
}

【讨论】：

没有 MVC 怎么办？似乎每个示例都使用 MVC 而不仅仅是 Web API