使用Box Windows SDK v2库在C#桌面应用程序中对Box进行身份验证

因此,基于桌面的应用程序的唯一替代方法是以某种方式拦截发生的URL重定向,并从查询字符串参数中抽出身份验证信息.

然而,由于IE最近落后于时代,而且我在C#和.NET工作,我决定考虑嵌入另一个浏览器,而不是使用内置的浏览器控件.我使用了Awesomium – 一个托管的.NET Chromium包装器.

所以,不用多说,我提出了适用于桌面应用程序的简单示例.

我的解决方案有两种形式,一种是我纯粹用作“浏览器”和主要形式：frmMain包含所有代码,frmBrowser包含Awesomium控件.

using Newtonsoft.Json.Linq;
using System.Web;

private static frmBrowser browser = null;
private const string BoxClientId = "{your client id}";
private const string BoxSecret = "{your secret}";    

private void authenticateWithBox()
{
   browser = new frmBrowser();
   browser.Show();

   browser.webControl1.Source = new Uri("https://www.box.com/api/oauth2/authorize?response_type=code&client_id=" + BoxClientId + "&redirect_uri=https://localsess");
   browser.webControl1.AddressChanged += new Awesomium.Core.UrlEventHandler(webControl1_AddressChanged);
}

void webControl1_AddressChanged(object sender,Awesomium.Core.UrlEventArgs e)
{
  //MessageBox.Show(e.Url.ToString());
  if (e.Url.Host == "localsess")
  {
    NameValueCollection parms = HttpUtility.ParseQueryString(e.Url.Query);
    if (parms.AllKeys.Contains("error"))
    {
       MessageBox.Show("Error connecting to Box.com: " + parms["error"] + " " + parms["error_description"]);
    }
    else
    {
        boxContinue(parms["code"]);
    }
  }
}

上面的代码是魔术发生的地方.每次Web控件显示的URL发生更改时,都会触发AddressChanged事件.因此,您必须将重定向URL设置为您可以检测到的唯一URL – 它甚至不必存在,如示例代码中所示.然后,您可以抽出所需的参数并继续进行身份验证过程.

string postToUrl(string url,string data)
{
  string results = String.Empty;
  WebRequest req = WebRequest.Create(url);
  req.Method = WebRequestMethods.Http.Post;
  byte[] byteArray = Encoding.UTF8.GetBytes(data);
  req.ContentType = "application/x-www-form-urlencoded";
  req.ContentLength = byteArray.Length;
  Stream dataStream = req.GetRequestStream();
  dataStream.Write(byteArray,byteArray.Length);
  dataStream.Close();
  WebResponse res = req.GetResponse();
  dataStream = res.GetResponseStream();
  StreamReader reader = new StreamReader(dataStream);
  results = reader.ReadToEnd();
  return results;
}

void boxContinue(string code)
{
  browser.Close();
  browser.Dispose();
  string json = postToUrl("https://www.box.com/api/oauth2/token","code=" + code + "&grant_type=authorization_code&client_id=" + BoxClientId + "&client_secret=" + BoxSecret);
  JToken token = JObject.Parse(json);

  string access_token = (string)token.SelectToken("access_token");
  string refresh_token = (string)token.SelectToken("refresh_token");
}

void boxRefresh(string refresh_token)
{
  string json = postToUrl("https://www.box.com/api/oauth2/token","grant_type=refresh_token&refresh_token=" + refresh_token + "&client_id=" + BoxClientId + "&client_secret=" + BoxSecret);
  JToken token = JObject.Parse(json);

  string access_token = (string)token.SelectToken("access_token");
  string new_refresh_token = (string)token.SelectToken("refresh_token");
}

其余的代码只是你的普通认证代码,它使用令牌和之前的请求来获取更多令牌等等.Box使用“refresh_tokens”来获得额外的访问权限,我展示了也是如何做到这一点的例子.

如果您发现任何错误或有任何意见等,请发表评论.