authentication - IdentityServer4 客户端 - 在 CookieAuthenticationEvents 上刷新访问 token

Question

我正在尝试在访问 token 过期时使用刷新 token 。回答了类似的问题 here .和 a sample code to renew token通过一个 Action

我最终在 startup.cs 中得到以下代码

app.UseCookieAuthentication(new CookieAuthenticationOptions
{
    AuthenticationScheme = "Cookies",
    //ExpireTimeSpan = TimeSpan.FromSeconds(100),
    AutomaticAuthenticate = true,
    AutomaticChallenge = true,
    Events = new CookieAuthenticationEvents()
    {
        OnValidatePrincipal = async x =>
        {
            if (x.Properties?.Items[".Token.expires_at"] == null) return;

            var logger = loggerFactory.CreateLogger(this.GetType());

            var now = DateTimeOffset.UtcNow;
            var tokenExpireTime = DateTime.Parse(x.Properties.Items[".Token.expires_at"]).ToUniversalTime();
            var timeElapsed = now.Subtract(x.Properties.IssuedUtc.Value);
            var timeRemaining = tokenExpireTime.Subtract(now.DateTime);

            if (timeElapsed > timeRemaining)
            {
                var httpContextAuthentication = x.HttpContext.Authentication;//Donot use the HttpContext.Authentication to retrieve anything, this cause recursive call to this event
                var oldAccessToken = await httpContextAuthentication.GetTokenAsync("access_token");
                var oldRefreshToken = await httpContextAuthentication.GetTokenAsync("refresh_token");
                logger.LogInformation($"Refresh token :{oldRefreshToken}, old access token:{oldAccessToken}");


                var disco = await DiscoveryClient.GetAsync(AuthorityServer);
                if (disco.IsError) throw new Exception(disco.Error);

                var tokenClient = new TokenClient(disco.TokenEndpoint, ApplicationId, "secret");
                var tokenResult = await tokenClient.RequestRefreshTokenAsync(oldRefreshToken);
                logger.LogInformation("Refresh token requested. " + tokenResult.ErrorDescription);


                if (!tokenResult.IsError)
                {

                    var oldIdToken = await httpContextAuthentication.GetTokenAsync("id_token");
                    var newAccessToken = tokenResult.AccessToken;
                    var newRefreshToken = tokenResult.RefreshToken;

                    var tokens = new List<AuthenticationToken>
                    {
                        new AuthenticationToken {Name = OpenIdConnectParameterNames.IdToken, Value = oldIdToken},
                        new AuthenticationToken {Name = OpenIdConnectParameterNames.AccessToken, Value = newAccessToken},
                        new AuthenticationToken {Name = OpenIdConnectParameterNames.RefreshToken, Value = newRefreshToken}
                    };

                    var expiresAt = DateTime.UtcNow + TimeSpan.FromSeconds(tokenResult.ExpiresIn);
                    tokens.Add(new AuthenticationToken { Name = "expires_at", Value = expiresAt.ToString("o", CultureInfo.InvariantCulture) });

                    var info = await httpContextAuthentication.GetAuthenticateInfoAsync("Cookies");
                    info.Properties.StoreTokens(tokens);
                    await httpContextAuthentication.SignInAsync("Cookies", info.Principal, info.Properties);

                }
                x.ShouldRenew = true;
            }
            else
            {
                logger.LogInformation("Not expired");
            }
        }

    }
});

客户端设置如下

AllowAccessTokensViaBrowser = true,
RefreshTokenUsage = TokenUsage.ReUse,
RefreshTokenExpiration = TokenExpiration.Sliding,
AbsoluteRefreshTokenLifetime = 86400,    
AccessTokenLifetime = 10,
AllowOfflineAccess = true,
AccessTokenType = AccessTokenType.Reference

成功登录后，我收到每个其他请求的 401。日志说

[Identity Server]2017-07-04 10:15:58.819 +01:00 [Debug] "TjpIkvHQi../cfivu6Nql5ADJJlZRuoJV1QI=" found in database: True

[Identity Server]2017-07-04 10:15:58.820 +01:00 [Debug] "reference_token" grant with value: "..9e64c1235c6675fcef617914911846fecd72f7b372" found in store, but has expired.

[Identity Server]2017-07-04 10:15:58.821 +01:00 [Error] Invalid reference token. "{ \"ValidateLifetime\": true,
\"AccessTokenType\": \"Reference\", \"TokenHandle\": \"..9e64c1235c6675fcef617914911846fecd72f7b372\" }"

[Identity Server]2017-07-04 10:15:58.822 +01:00 [Debug] Token is invalid.

[Identity Server]2017-07-04 10:15:58.822 +01:00 [Debug] Creating introspection response for inactive token.

[Identity Server]2017-07-04 10:15:58.822 +01:00 [Information] Success token introspection. Token status: "inactive", for API name: "api1"

任何帮助都会受到高度赞赏

更新 :

基本上，当 token 过期时，我会收到 System.StackOverflowException在下一行

var tokenExpireTime = DateTime.Parse(x.Properties.Items[".Token.expires_at"]).ToUniversalTime();

更新 2 :
不要使用 HttpContext.Authentication 来检索任何东西。检查下面的答案以找到工作的实现

Answer 1

我过去两天一直在研究这个，但无法完成这项工作。有趣的是，在这里发布问题后，我在 2 小时内就让它工作了:)

Events = new CookieAuthenticationEvents()
{
    OnValidatePrincipal = async x =>
    {
        if (x.Properties?.Items[".Token.expires_at"] == null) return;
        var now = DateTimeOffset.UtcNow;

        var tokenExpireTime = DateTime.Parse(x.Properties.Items[".Token.expires_at"]).ToUniversalTime();
        var timeElapsed = now.Subtract(x.Properties.IssuedUtc.Value);
        var timeRemaining = tokenExpireTime.Subtract(now.DateTime);
        WriteMessage($"{timeRemaining} and elapsed at {timeElapsed}");
        if (timeElapsed > timeRemaining)
        {
            var oldAccessToken = x.Properties.Items[".Token.access_token"];

            var oldRefreshToken = x.Properties.Items[".Token.refresh_token"];
            WriteMessage($"Refresh token :{oldRefreshToken}, old access token {oldAccessToken}");

            var disco = await DiscoveryClient.GetAsync(AuthorityServer);
            if (disco.IsError) throw new Exception(disco.Error);

            var tokenClient = new TokenClient(disco.TokenEndpoint, ApplicationId, "secret");
            var tokenResult = await tokenClient.RequestRefreshTokenAsync(oldRefreshToken);

            if (!tokenResult.IsError)
            {
                var oldIdToken = x.Properties.Items[".Token.id_token"];//tokenResult.IdentityToken

                var newAccessToken = tokenResult.AccessToken;
                var newRefreshToken = tokenResult.RefreshToken;

                var tokens = new List<AuthenticationToken>
                {
                    new AuthenticationToken {Name = OpenIdConnectParameterNames.IdToken, Value = oldIdToken},
                    new AuthenticationToken {Name = OpenIdConnectParameterNames.AccessToken, Value = newAccessToken},
                    new AuthenticationToken {Name = OpenIdConnectParameterNames.RefreshToken, Value = newRefreshToken}
                };

                var expiresAt = DateTime.UtcNow + TimeSpan.FromSeconds(tokenResult.ExpiresIn);
                tokens.Add(new AuthenticationToken { Name = "expires_at", Value = expiresAt.ToString("o", CultureInfo.InvariantCulture) });

                x.Properties.StoreTokens(tokens);

                WriteMessage($"oldAccessToken: {oldAccessToken}{Environment.NewLine} and new access token {newAccessToken}");

            }
            x.ShouldRenew = true;
        }
    }
}

基本上 httpContextAuthentication.GetTokenAsync出于这个原因，使这个递归 StackOverflowException发生。

如果此实现有任何问题，请告诉我