/// <summary>
/// 核心执行方法 == 验证签名和消息体信息解密处理部分
/// </summary>
/// <param name="recXml">消息内容</param>
/// <param name="signature">微信加密签名</param>
/// <param name="timestamp">时间戳</param>
/// <param name="nonce">随机数</param>
/// <returns>验证结果及相应的消息内容体 （如果加密模式，返回的是解密后的明文）</returns>
protected ResultMo <string> ProcessBegin(string recXml, string signature,
string timestamp, string nonce)
{
if (string.IsNullOrEmpty(recXml))
{
return(new ResultMo <string>(ResultTypes.ObjectNull, "接收的消息体为空！"));
}
var resCheck = WxMsgHelper.CheckSignature(m_Config.Token, signature, timestamp, nonce);
if (resCheck.IsSuccess())
{
if (m_Config.SecurityType != WxSecurityType.None)
{
XmlDocument xmlDoc = null;
var dirs = WxMsgHelper.ChangXmlToDir(recXml, ref xmlDoc);
if (dirs == null || !dirs.ContainsKey("Encrypt"))
{
return(new ResultMo <string>(ResultTypes.ObjectNull, "加密消息为空"));
}
var recMsgXml = Cryptography.WxAesDecrypt(dirs["Encrypt"], m_Config.EncodingAesKey);
return(new ResultMo <string>(recMsgXml));
}
return(new ResultMo <string>(recXml));
}
return(resCheck.ConvertToResultOnly <string>());
}
/// <summary>
/// 核心执行 过程的 验签和解密
/// </summary>
/// <param name="recXml">消息内容</param>
/// <param name="signature">微信加密签名</param>
/// <param name="timestamp">时间戳</param>
/// <param name="nonce">随机数</param>
/// <returns>验证结果及相应的消息内容体 （如果加密模式，返回的是解密后的明文）</returns>
private ResultMo <string> PrepareExecute(string recXml, string signature,
string timestamp, string nonce)
{
if (string.IsNullOrEmpty(recXml))
{
return(new ResultMo <string>(ResultTypes.ObjectNull, "接收的消息体为空！"));
}
var resCheck = WxMsgHelper.CheckSignature(ApiConfig.Token, signature, timestamp, nonce);
if (!resCheck.IsSuccess())
{
return(resCheck.ConvertToResult <string>());
}
if (ApiConfig.SecurityType == WxSecurityType.None)
{
return(new ResultMo <string>(recXml));
}
var dirs = WxMsgHelper.ChangXmlToDir(recXml, out XmlDocument xmlDoc);
if (dirs == null || !dirs.TryGetValue("Encrypt", out var encryStr) ||
string.IsNullOrEmpty(encryStr))
{
return(new ResultMo <string>(ResultTypes.ObjectNull, "加密消息为空"));
}
var recMsgXml = Cryptography.WxAesDecrypt(encryStr, ApiConfig.EncodingAesKey);
return(new ResultMo <string>(recMsgXml));
}
/// <summary>
/// 服务器验证
/// </summary>
/// <param name="signature"></param>
/// <param name="timestamp"></param>
/// <param name="nonce"></param>
/// <param name="echostr"></param>
/// <returns></returns>
public ResultMo <string> CheckServerValid(string signature, string timestamp, string nonce, string echostr)
{
var checkSignRes = WxMsgHelper.CheckSignature(m_Config.Token, signature, timestamp, nonce);
var resultRes = checkSignRes.ConvertToResultOnly <string>();
resultRes.data = resultRes.IsSuccess() ? echostr : string.Empty;
return(resultRes);
}