6

我正在尝试在 Google.Apis 请求中使用 Owin 提供的 AccessToken，但我收到异常 System.InvalidOperationException（附加信息：访问令牌已过期，但我们无法刷新它）。

我的 Google 身份验证配置正常，我可以使用它成功登录我的应用程序。我将 context.AccessToken 作为声明存储在身份验证回调中（GoogleOAuth2AuthenticationProvider 的 OnAuthenticated “事件”）。

我的 Startup.Auth.cs 配置(app.UseGoogleAuthentication(ConfigureGooglePlus()))

private GoogleOAuth2AuthenticationOptions ConfigureGooglePlus()
{
var goolePlusOptions = new GoogleOAuth2AuthenticationOptions()
{
    ClientId = "Xxxxxxx.apps.googleusercontent.com",
    ClientSecret = "YYYYYYzzzzzz",
    Provider = new GoogleOAuth2AuthenticationProvider()
    {
        OnAuthenticated = context =>
        {
            context.Identity.AddClaim(new System.Security.Claims.Claim("Google_AccessToken", context.AccessToken));
            return Task.FromResult(0);
        }
    },
    SignInAsAuthenticationType = DefaultAuthenticationTypes.ExternalCookie
};

goolePlusOptions.Scope.Add("https://www.googleapis.com/auth/plus.login");
goolePlusOptions.Scope.Add("https://www.googleapis.com/auth/userinfo.email");

return goolePlusOptions;

}

抛出异常的代码（Execute() 方法）

var externalIdentity = await AuthenticationManager.GetExternalIdentityAsync(DefaultAuthenticationTypes.ExternalCookie);

var accessTokenClaim = externalIdentity.FindAll(loginProvider + "_AccessToken").First();

var secrets = new ClientSecrets()
{
    ClientId = "Xxxxxxx.apps.googleusercontent.com",
    ClientSecret = "YYYYYYzzzzzz"
};

IAuthorizationCodeFlow flow =
    new GoogleAuthorizationCodeFlow(new GoogleAuthorizationCodeFlow.Initializer
    {
        ClientSecrets = secrets,
        Scopes = new[] { PlusService.Scope.PlusLogin, PlusService.Scope.UserinfoEmail }
    });

UserCredential credential = new UserCredential(flow, "me", new TokenResponse() { AccessToken = accessTokenClaim.Value });

var ps = new PlusService(
    new BaseClientService.Initializer()
    {
        ApplicationName = "My App Name",
        HttpClientInitializer = credential
    });

var k = ps.People.List("me", PeopleResource.ListRequest.CollectionEnum.Visible).Execute();

是否有另一种方法可以在不通过整个身份验证过程的情况下获取原始 AccessToken 或刷新它（用户已经通过身份验证）？

我需要查询一些 GooglePlus 个人资料数据，例如 GivenName、familyName、性别、个人资料图片和个人资料网址。

4

1 回答 1

6

Linda帮我提供了一个指向新的 asp.net mvc 示例的 URL ( https://codereview.appspot.com/194980043/ )。

我只需将AccessType = "offline"添加到 GoogleOAuth2AuthenticationOptions 并保存一些额外的信息，以便在需要时创建一个新的 TokenResponse 实例。

谷歌身份验证选项

private GoogleOAuth2AuthenticationOptions ConfigureGooglePlus()
{

    var goolePlusOptions = new GoogleOAuth2AuthenticationOptions()
    {
        AccessType = "offline",
        ClientId = "Xxxxxxx.apps.googleusercontent.com",
        ClientSecret = "Yyyyyyyyyy",
        Provider = new GoogleOAuth2AuthenticationProvider()
        {
            OnAuthenticated = context =>
            {
                context.Identity.AddClaim(new System.Security.Claims.Claim("Google_AccessToken", context.AccessToken));

                if (context.RefreshToken != null)
                {
                    context.Identity.AddClaim(new Claim("GoogleRefreshToken", context.RefreshToken));
                }
                context.Identity.AddClaim(new Claim("GoogleUserId", context.Id));
                context.Identity.AddClaim(new Claim("GoogleTokenIssuedAt", DateTime.Now.ToBinary().ToString()));
                var expiresInSec = (long)(context.ExpiresIn.Value.TotalSeconds);
                context.Identity.AddClaim(new Claim("GoogleTokenExpiresIn", expiresInSec.ToString()));


                return Task.FromResult(0);
            }
        },

        SignInAsAuthenticationType = DefaultAuthenticationTypes.ExternalCookie
    };

    goolePlusOptions.Scope.Add("https://www.googleapis.com/auth/plus.login");
    goolePlusOptions.Scope.Add("https://www.googleapis.com/auth/plus.me");
    goolePlusOptions.Scope.Add("https://www.googleapis.com/auth/userinfo.email");

    return goolePlusOptions;
}

如何检索凭据（使用“存储”的令牌信息作为声明）

private async Task<UserCredential> GetCredentialForApiAsync()
{
    var initializer = new GoogleAuthorizationCodeFlow.Initializer
    {
        ClientSecrets = new ClientSecrets
        {
            ClientId = "Xxxxxxxxx.apps.googleusercontent.com",
            ClientSecret = "YYyyyyyyyyy",
        },
        Scopes = new[] { 
        "https://www.googleapis.com/auth/plus.login", 
        "https://www.googleapis.com/auth/plus.me", 
        "https://www.googleapis.com/auth/userinfo.email" }
    };
    var flow = new GoogleAuthorizationCodeFlow(initializer);

    var identity = await AuthenticationManager.GetExternalIdentityAsync(DefaultAuthenticationTypes.ApplicationCookie);

    var userId = identity.FindFirstValue("GoogleUserId");

    var token = new TokenResponse()
    {
        AccessToken = identity.FindFirstValue("Google_AccessToken"),
        RefreshToken = identity.FindFirstValue("GoogleRefreshToken"),
        Issued = DateTime.FromBinary(long.Parse(identity.FindFirstValue("GoogleTokenIssuedAt"))),
        ExpiresInSeconds = long.Parse(identity.FindFirstValue("GoogleTokenExpiresIn")),
    };

    return new UserCredential(flow, userId, token);
}
于 2015-06-26T15:50:57.953 回答