在最新版本的 Facebook C# SDk 6.4 中。我们可以使用FacebookSubscriptionVerify动作方法属性吗？FacebookClient因为这在课堂上不可用
我在 MVC3 项目中使用的是旧版本的 Facebok C# SDK。现在，切换到 Facebook C# SDK 6.4 后，该类不可用。
我们有什么替代品吗？
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今天早上我花了更多时间确认您引用的属性已在版本 6 中删除（以及大量其他项目）。由于这个项目是开源的，这里是FacebookSubscriptionVerify你曾经使用的 ActionFilter 的代码。对于此处未包含的任何对函数的引用，CodePlex 上的此版本提供了所有代码供您查看： http: //facebooksdk.codeplex.com/SourceControl/changeset/view/08cb51f372b5#Source/Facebook .Web/FacebookSubscriptionsHttpHandler.cs
新版本（版本 6.X）和版本 5 的最后几个分支可以在 GitHub 站点上找到 - https://github.com/facebook-csharp-sdk/facebook-csharp-sdk/tree/master/Source
随着源代码的可用性，您应该能够结合您使用此功能的方式，创建您自己ActionFilterAttribute的可以复制您以前拥有的功能的功能。
// --------------------------------
// <copyright file="FacebookSubscriptionVerifyAttribute.cs" company="Thuzi LLC (www.thuzi.com)">
// Microsoft Public License (Ms-PL)
// </copyright>
// <author>Nathan Totten (ntotten.com), Jim Zimmerman (jimzimmerman.com) and Prabir Shrestha (prabir.me)</author>
// <license>Released under the terms of the Microsoft Public License (Ms-PL)</license>
// <website>http://facebooksdk.codeplex.com</website>
// ---------------------------------
namespace Facebook.Web.Mvc
{
using System.Web.Mvc;
public class FacebookSubscriptionVerifyAttribute : ActionFilterAttribute
{
public string VerificationToken { get; set; }
public FacebookSubscriptionVerifyAttribute(string verificationToken)
{
VerificationToken = verificationToken;
}
public override void OnActionExecuting(ActionExecutingContext filterContext)
{
filterContext.HttpContext.Response.ContentType = "text/plain";
var request = filterContext.HttpContext.Request;
var modelState = filterContext.Controller.ViewData.ModelState;
string errorMessage;
if (request.HttpMethod == "GET")
{
if (string.IsNullOrEmpty(VerificationToken))
{
errorMessage = "Verification Token is empty.";
}
else
{
if (FacebookSubscriptionVerifier.VerifyGetSubscription(request, VerificationToken, out errorMessage))
{
return;
}
}
}
else
{
errorMessage = "Invalid http method.";
}
modelState.AddModelError("facebook-subscription", errorMessage);
filterContext.HttpContext.Response.StatusCode = 401;
}
}
}
以及 FacebookSubscriptionVerifier 类的代码
namespace Facebook.Web
{
using System.Collections.Generic;
using System.Diagnostics.Contracts;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Web;
/// <summary>
/// Facebook helper methods for web.
/// </summary>
internal static class FacebookSubscriptionVerifier
{
internal const string HTTP_X_HUB_SIGNATURE_KEY = "HTTP_X_HUB_SIGNATURE";
internal static byte[] ComputeHmacSha1Hash(byte[] data, byte[] key)
{
Contract.Requires(data != null);
Contract.Requires(key != null);
Contract.Ensures(Contract.Result<byte[]>() != null);
using (var crypto = new System.Security.Cryptography.HMACSHA1(key))
{
return crypto.ComputeHash(data);
}
}
/// <summary>
/// Verify HTTP_X_HUB_SIGNATURE.
/// </summary>
/// <param name="secret">
/// The secret.
/// </param>
/// <param name="httpXHubSignature">
/// The http x hub signature.
/// </param>
/// <param name="jsonString">
/// The json string.
/// </param>
/// <returns>
/// Returns true if validation is successful.
/// </returns>
internal static bool VerifyHttpXHubSignature(string secret, string httpXHubSignature, string jsonString)
{
Contract.Requires(!string.IsNullOrEmpty(secret));
if (!string.IsNullOrEmpty(httpXHubSignature) && httpXHubSignature.StartsWith("sha1=") && httpXHubSignature.Length > 5 && !string.IsNullOrEmpty(jsonString))
{
// todo: test inner parts
var expectedSignature = httpXHubSignature.Substring(5);
var sha1 = ComputeHmacSha1Hash(Encoding.UTF8.GetBytes(jsonString), Encoding.UTF8.GetBytes(secret));
var hashString = new StringBuilder();
foreach (var b in sha1)
{
hashString.Append(b.ToString("x2"));
}
if (expectedSignature == hashString.ToString())
{
return true;
}
}
return false;
}
/// <summary>
/// Verify HTTP_X_HUB_SIGNATURE for http GET method.
/// </summary>
/// <param name="request">
/// The http request.
/// </param>
/// <param name="verifyToken">
/// The verify token.
/// </param>
/// <param name="errorMessage">
/// The error message.
/// </param>
/// <returns>
/// Returns true if successful otherwise false.
/// </returns>
internal static bool VerifyGetSubscription(HttpRequestBase request, string verifyToken, out string errorMessage)
{
Contract.Requires(request != null);
Contract.Requires(request.HttpMethod == "GET");
Contract.Requires(request.Params != null);
Contract.Requires(!string.IsNullOrEmpty(verifyToken));
errorMessage = null;
if (request.Params["hub.mode"] == "subscribe")
{
if (request.Params["hub.verify_token"] == verifyToken)
{
if (string.IsNullOrEmpty(request.Params["hub.challenge"]))
{
errorMessage = Properties.Resources.InvalidHubChallenge;
}
else
{
return true;
}
}
else
{
errorMessage = Properties.Resources.InvalidVerifyToken;
}
}
else
{
errorMessage = Properties.Resources.InvalidHubMode;
}
return false;
}
/// <summary>
/// Verify HTTP_X_HUB_SIGNATURE for http POST method.
/// </summary>
/// <param name="request">
/// The request.
/// </param>
/// <param name="secret">
/// The secret.
/// </param>
/// <param name="jsonString">
/// The json string.
/// </param>
/// <param name="errorMessage">
/// The error message.
/// </param>
/// <returns>
/// Returns true if successful otherwise false.
/// </returns>
internal static bool VerifyPostSubscription(HttpRequestBase request, string secret, string jsonString, out string errorMessage)
{
Contract.Requires(request != null);
Contract.Requires(request.HttpMethod == "POST");
Contract.Requires(request.Params != null);
Contract.Requires(!string.IsNullOrEmpty(secret));
errorMessage = null;
// signatures looks somewhat like "sha1=4594ae916543cece9de48e3289a5ab568f514b6a"
var signature = request.Params["HTTP_X_HUB_SIGNATURE"];
if (!string.IsNullOrEmpty(signature) && signature.StartsWith("sha1="))
{
var expectedSha1 = signature.Substring(5);
if (string.IsNullOrEmpty(expectedSha1))
{
errorMessage = Properties.Resources.InvalidHttpXHubSignature;
}
else
{
if (string.IsNullOrEmpty(jsonString))
{
errorMessage = Properties.Resources.InvalidJsonString;
return false;
}
var sha1 = ComputeHmacSha1Hash(Encoding.UTF8.GetBytes(jsonString), Encoding.UTF8.GetBytes(secret));
var hashString = new StringBuilder();
foreach (var b in sha1)
{
hashString.Append(b.ToString("x2"));
}
if (expectedSha1 == hashString.ToString())
{
// todo: test
return true;
}
// todo: test
errorMessage = Properties.Resources.InvalidHttpXHubSignature;
}
}
else
{
errorMessage = Properties.Resources.InvalidHttpXHubSignature;
}
return false;
}
}
}
于 2013-10-29T14:06:44.780 回答