asp.net-mvc - Azure Active Directory - 存储访问 token 的 MVC 应用程序最佳实践

Question

我使用 Azure Active Directory (AAD) 设置了一个简单的 MVC 应用程序。

我需要查询 AAD Graph API 才能从我的应用程序管理应用程序角色和组。

在Startup类中，我收到了这样的AccessToken:

public void ConfigureAuth(IAppBuilder app)
{
    AntiForgeryConfig.UniqueClaimTypeIdentifier = ClaimTypes.NameIdentifier;

    app.SetDefaultSignInAsAuthenticationType(CookieAuthenticationDefaults.AuthenticationType);

    app.UseCookieAuthentication(new CookieAuthenticationOptions());

    app.UseOpenIdConnectAuthentication(
        new OpenIdConnectAuthenticationOptions
        {
            ClientId = Constants.ClientId,
            Authority = Constants.Authority,
            PostLogoutRedirectUri = Constants.PostLogoutRedirectUri,
            Notifications = new OpenIdConnectAuthenticationNotifications()
            {
                // If there is a code in the OpenID Connect response, redeem it for an access token and refresh token, and store those away.
                AuthorizationCodeReceived = (context) =>
                {
                    var code = context.Code;
                    var credential = new ClientCredential(Constants.ClientId, Constants.ClientSecret);
                    var signedInUserId =
                        context.AuthenticationTicket.Identity.FindFirst(ClaimTypes.NameIdentifier).Value;
                    var authContext = new AuthenticationContext(Constants.Authority,
                        new TokenDbCache(signedInUserId));
                    var result = authContext.AcquireTokenByAuthorizationCode(
                        code, new Uri(HttpContext.Current.Request.Url.GetLeftPart(UriPartial.Path)), credential,
                        Constants.GraphUrl);

                    var accessToken = result.AccessToken;                        
                    return Task.FromResult(0);
                }
            }
        });
}

要实例化 ActiveDirectoryClient 类，我需要传递 AccessToken:

var servicePointUri = new Uri("https://graph.windows.net");
var serviceRoot = new Uri(servicePointUri, tenantID);
var activeDirectoryClient = new ActiveDirectoryClient(serviceRoot,
        async () => await GetTokenForApplication());

我想知道将 AccessToken 存储为声明是否是一个好的解决方案(在 Startup 类中添加行)？

context.AuthenticationTicket.Identity.AddClaim(new 
    Claim("OpenId_AccessToken", result.AccessToken));

编辑 token 已存储..

得到它!谢谢乔治。所以我的 token 已使用 TokenDbCache 类存储在数据库中。

根据示例再次获取它(在我的一个 Controller 中):

public async Task<string> GetTokenForApplication()
{
    string signedInUserID = ClaimsPrincipal.Current.FindFirst(ClaimTypes.NameIdentifier).Value;
    string tenantID = ClaimsPrincipal.Current.FindFirst("http://schemas.microsoft.com/identity/claims/tenantid").Value;
    string userObjectID = ClaimsPrincipal.Current.FindFirst("http://schemas.microsoft.com/identity/claims/objectidentifier").Value;

    // get a token for the Graph without triggering any user interaction (from the cache, via multi-resource refresh token, etc)
    ClientCredential clientcred = new ClientCredential(clientId, appKey);
    // initialize AuthenticationContext with the token cache of the currently signed in user, as kept in the app's database
    AuthenticationContext authenticationContext = new AuthenticationContext(aadInstance + tenantID, new TokenDbCache<ApplicationDbContext>(signedInUserID));
    AuthenticationResult authenticationResult = await authenticationContext.AcquireTokenSilentAsync(graphResourceID, clientcred, new UserIdentifier(userObjectID, UserIdentifierType.UniqueId));
    return authenticationResult.AccessToken;
}

我从 AuthenticationContext 中不知道的内容:如果已请求 token ，它将从 TokenDbCache 中检索它。

Answer 1

当您通过 Adal 检索 token 时，它会将其缓存在 NaiveCache 对象中。

使用 StartUp 类检索 token 的代码:

  AuthenticationResult kdAPiresult = authContext.AcquireTokenByAuthorizationCode(code, new Uri(HttpContext.Current.Request.Url.GetLeftPart(UriPartial.Path)), credential, "Your API Resource ID");
                            string kdAccessToken = kdAPiresult.AccessToken;

在 Azure Active Directory 示例 ( https://github.com/AzureADSamples ) 中，此对象用于检索应用 Controller 内的 token 。您可以实现自己的缓存，以相同的方式检索它。

在 Controller 代码中，您可以执行以下操作:

IOwinContext owinContext = HttpContext.GetOwinContext();
                string userObjectID = owinContext.Authentication.User.Claims.First(c => c.Type == Configuration.ClaimsObjectidentifier).Value;
                NaiveSessionCache cache = new NaiveSessionCache(userObjectID);
                AuthenticationContext authContext = new AuthenticationContext(Configuration.Authority, cache);
                TokenCacheItem kdAPITokenCache = authContext.TokenCache.ReadItems().Where(c => c.Resource == "You API Resource ID").FirstOrDefault();

如果您不是通过 AuthenticationContext(3d 方 API)获取 token ，也可以在声明中存储 token