从 Google 身份验证服务为 .NET 中的 REST 服务检索新的 Firebase 访问令牌

Retrieving new Firebase access token for REST services in .NET from Google auth service

更改 firebase 授权系统后,我正在尝试从 google 身份验证服务器检索 c# 中的访问令牌。

根据新文档:https://firebase.google.com/docs/reference/rest/database/user-auth#section-api-usage

我在 c# 中创建了类似的东西:

using Google.Apis.Auth.OAuth2;
[...]
async Task<string> GetToken()
{
    GoogleCredential credential;
    using (var stream = new System.IO.FileStream("gckey.json",
        System.IO.FileMode.Open, System.IO.FileAccess.Read))
    {
        credential = GoogleCredential.FromStream(stream).CreateScoped(
            new string[] { "https://www.googleapis.com/auth/firebase.database" }
            );
    }

    ITokenAccess c = credential as ITokenAccess;
    return await c.GetAccessTokenForRequestAsync();
}

gckey.json 是从 Google 特定 firebase 项目的开发人员控制台下载的密钥文件。

代码工作正常,但它 returns 令牌不适用于 firebase,我试过: https://fiery-torch-xxxx.firebaseio.com/.json?access_token=retrived token

但我收到: "error" : "Permission denied."

我做错了什么?或者我错过了什么?

我读了 docs,它指出 url 参数应该是 "auth" 而不是 "access_token"。你能试试吗?

我在范围内包含“https://www.googleapis.com/auth/userinfo.email”后使它起作用

using Google.Apis.Auth.OAuth2;
[...]
async Task<string> GetToken()
{
    GoogleCredential credential;
    using (var stream = new System.IO.FileStream("gckey.json",
        System.IO.FileMode.Open, System.IO.FileAccess.Read))
    {
        credential = GoogleCredential.FromStream(stream).CreateScoped(
            new string[] { 
                "https://www.googleapis.com/auth/firebase.database", 
                "https://www.googleapis.com/auth/userinfo.email" }
            );
    }

    ITokenAccess c = credential as ITokenAccess;
    return await c.GetAccessTokenForRequestAsync();
}

我在阅读以下 google 群组帖子时发现了这一点:

Permission denied error when using Google Oauth2 access token