|
|
|
|
|
using BP.GPM.WeiXin;
|
|
|
|
|
|
using System;
|
|
|
|
|
|
using System.Collections.Generic;
|
|
|
|
|
|
using System.Linq;
|
|
|
|
|
|
using System.Security.Cryptography;
|
|
|
|
|
|
using System.Text;
|
|
|
|
|
|
using System.Web;
|
|
|
|
|
|
using System.Web.UI;
|
|
|
|
|
|
using System.Web.UI.WebControls;
|
|
|
|
|
|
using System.Web.Security.AntiXss;
|
|
|
|
|
|
|
|
|
|
|
|
namespace CCFlow.CCMobile
|
|
|
|
|
|
{
|
|
|
|
|
|
public partial class WeiXinGZH : System.Web.UI.Page
|
|
|
|
|
|
{
|
|
|
|
|
|
//配置的token，在设置回调API验证时，随机生成或指定的编号
|
|
|
|
|
|
public string token = BP.Difference.SystemConfig.WXGZH_Token;
|
|
|
|
|
|
protected void Page_Load(object sender, EventArgs e)
|
|
|
|
|
|
{
|
|
|
|
|
|
//获取公众号发送的4个参数，验证URL有效性
|
|
|
|
|
|
string echoString = AntiXssEncoder.HtmlEncode(HttpContext.Current.Request.QueryString["echostr"], true);//加密的随机字符串
|
|
|
|
|
|
string signature = AntiXssEncoder.HtmlEncode(HttpContext.Current.Request.QueryString["signature"], true); //微信加密签名
|
|
|
|
|
|
string timestamp = AntiXssEncoder.HtmlEncode(HttpContext.Current.Request.QueryString["timestamp"], true);//时间戳
|
|
|
|
|
|
string nonce = AntiXssEncoder.HtmlEncode(HttpContext.Current.Request.QueryString["nonce"], true);//随机数
|
|
|
|
|
|
//返回参数，微信公众号验证成功后，自动赋值，如果为空，说明验证失败
|
|
|
|
|
|
string decryptEchoString = "";
|
|
|
|
|
|
//开始验证
|
|
|
|
|
|
if (CheckSignature(signature, timestamp, nonce, echoString, ref decryptEchoString))
|
|
|
|
|
|
{
|
|
|
|
|
|
//不为空，说明验证成功，将参数，返回给公众号
|
|
|
|
|
|
if (!string.IsNullOrEmpty(decryptEchoString))
|
|
|
|
|
|
{
|
|
|
|
|
|
HttpContext.Current.Response.Write(echoString);
|
|
|
|
|
|
|
|
|
|
|
|
HttpContext.Current.Response.End();
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
//<summary>
|
|
|
|
|
|
//验证公众号签名
|
|
|
|
|
|
//</summary>
|
|
|
|
|
|
//<param name="signature">签名内容</param>
|
|
|
|
|
|
//<param name="timestamp">时间戳</param>
|
|
|
|
|
|
//<param name="nonce">nonce参数</param>
|
|
|
|
|
|
//<param name="echostr">内容字符串</param>
|
|
|
|
|
|
//<param name="retEchostr">返回的字符串</param>
|
|
|
|
|
|
//<returns></returns>
|
|
|
|
|
|
public bool CheckSignature( string signature, string timestamp, string nonce, string echostr, ref string retEchostr)
|
|
|
|
|
|
{
|
|
|
|
|
|
var token = this.token;
|
|
|
|
|
|
var parameter = new List<string> { token, timestamp, nonce };
|
|
|
|
|
|
parameter.Sort();
|
|
|
|
|
|
var parameterStr = parameter[0] + parameter[1] + parameter[2];
|
|
|
|
|
|
retEchostr = GetSHA1(parameterStr).Replace("-", "").ToLower();
|
|
|
|
|
|
if (retEchostr == signature)
|
|
|
|
|
|
return true;
|
|
|
|
|
|
|
|
|
|
|
|
return false;
|
|
|
|
|
|
}
|
|
|
|
|
|
//SHA1加密
|
|
|
|
|
|
public string GetSHA1(string input)
|
|
|
|
|
|
{
|
|
|
|
|
|
var output = string.Empty;
|
|
|
|
|
|
var sha1 = new SHA1CryptoServiceProvider();
|
|
|
|
|
|
var inputBytes = UTF8Encoding.UTF8.GetBytes(input);
|
|
|
|
|
|
var outputBytes = sha1.ComputeHash(inputBytes);
|
|
|
|
|
|
sha1.Clear();
|
|
|
|
|
|
output = BitConverter.ToString(outputBytes);
|
|
|
|
|
|
return output;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
