授权 WebApp 到 ADFS 以访问 Dynamics CRM Web API

Question

我有一个 Web 应用程序需要与 Dynamics CRM 365 Web API 通信。 Dynamics CRM 配置为 ADFS 上的依赖方。服务器是 Windows Server 2016，一切都在本地而不是在 Azure 上。

我为获得有效令牌所做的工作如下：

1) 在 ADFS 中转到应用程序组并添加一个新的服务器应用程序，获取 ClientID 并为我的 Web 应用程序生成一个客户端密码。

2) 在 Active Directory 中添加新用户 webAppUser

3) 将此用户添加为 CRM 中的应用程序用户，其应用程序 ID 是我之前在将 Web 应用程序注册到 ADFS 时获得的 ClientID。还创建了一个对实体帐户具有完全权限的新角色，并将此角色分配给此应用程序用户

4) 我正在使用以下代码检索不记名令牌并将其添加到我的 HttpClient 授权 header.

public class CrmWebApiClient
{
    private HttpClient _httpClient;

    public CrmWebApiClient()
    {
        _httpClient = new HttpClient();
        _httpClient.BaseAddress = new Uri("https://crmbaseaddress.com");            
    }

    internal async Task Initialize()
    {
        try
        {               
            var authority = "https://adfsServerUrl/adfs/";
            var authContext = new AuthenticationContext(authority,false);
            var credentials = new ClientCredential(clientID,clientSecret);

            var authResult = await authContext.AcquireTokenAsync("https://crmbaseaddress.com", credentials);

            _httpClient.DefaultRequestHeaders.Authorization =
                new AuthenticationHeaderValue("Bearer", authResult.AccessToken);
        }
        catch (Exception ex)
        {
            var error = ex;
        }

    }

    internal async Task<string> GetValuesAsync()
    {
        var result = string.Empty;
        try
        {
            result = await _httpClient.GetStringAsync("api/data/v8.1/accounts");
        }
        catch (Exception ex)
        {
            var error = ex;
        }

        return result;
    }
}

5) 我设法获得了令牌，但是当我调用 CRM 的 Web 时 Api 我仍然收到 401 Unauthorized。

Answer 1

最后我不得不使用系统用户并使用下面的代码在我的 oAUth 请求中发送它的凭据以获得有效令牌：

namespace TestApp.App_Start {
public class CrmWebApiClient
{
    private HttpClient _httpClient;

    public CrmWebApiClient()
    {       
        _httpClient = new HttpClient();
        _httpClient.BaseAddress = new Uri("https://crmUrl");
        _httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
        _httpClient.DefaultRequestHeaders.Add("OData-MaxVersion","4.0");
        _httpClient.DefaultRequestHeaders.Add("OData-Version", "4.0");
    }

    internal async Task Initilize()
    {
        try
        {

            var tokenClient = new HttpClient();             
            var content = new FormUrlEncodedContent(new[] {
                new KeyValuePair<string,string>("client_id",_clientID),
                new KeyValuePair<string,string>("client_secret",_clientSecret),
                new KeyValuePair<string,string>("resource",_urlOfResource),
                new KeyValuePair<string,string>("username",_usernameOfSystemUser),
                new KeyValuePair<string,string>("password",_passwordOfSystemUser),
                new KeyValuePair<string,string>("grant_type","password"),
            });
            var res = tokenClient.PostAsync("https://adfsUrl/adfs/oauth2/token", content);
            var respo = res.Result.Content.ReadAsStringAsync().Result;
            var accesstoken = JObject.Parse(respo).GetValue("access_token").ToString();

            _httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", accesstoken);

        }
        catch (Exception ex)
        {
            Trace.WriteLine($"Exception when requesting the bearer token from ADFS: {ex.Message} - {ex.InnerException?.Message}");
        }

    }

    internal async Task<string> GetAccountsAsync()
    {
        var result = string.Empty;
        try
        {
            result = _httpClient.GetStringAsync("/api/data/v8.0/accounts").Result;

        }
        catch (Exception ex)
        {
            Trace.WriteLine($"Exception when calling the CRM api: {ex.Message} - {ex.InnerException?.Message}");
        }
        return result;
    }
}
}


// Use the above class like that
var httpClient = new CrmWebApiClient();
httpClient.Initilize().Wait();
var result = httpClient.GetAccountsAsync().Result;

授权 WebApp 到 ADFS 以访问 Dynamics CRM Web API

Authorize WebApp to ADFS in order to access Dynamics CRM Web API

authorization

dynamics-crm

token

adfs

dynamics-365