初始提交

2020-10-07 20:25:03 +08:00
commit d318014316
3809 changed files with 263103 additions and 0 deletions
--- a/Services/Hncore.Pass.PaymentCenter/Pay/WxPay/WxJsPayData.cs
+++ b/Services/Hncore.Pass.PaymentCenter/Pay/WxPay/WxJsPayData.cs
@@ -0,0 +1,166 @@
+using Hncore.Infrastructure.Common;
+using Hncore.Infrastructure.Extension;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Security.Cryptography;
+using System.Text;
+using System.Xml;
+
+namespace Hncore.Pass.PaymentCenter.WxPay.WechatJsPay
+{
+    /// <summary>
+    /// 微信小程序、公众号支付，H5支付 数据签名校验
+    /// </summary>
+    public class WxPayChecker: SortedDictionary<string, string>
+    {
+        public string SignType { get; set; } = "MD5";// "HMAC-SHA256";
+        public string MchKey { get; set; }
+
+        /**
+        * 生成时间戳，标准北京时间，时区为东八区，自1970年1月1日 0点0分0秒以来的秒数
+         * @return 时间戳
+        */
+        public string GenerateTimeStamp()
+        {
+            TimeSpan ts = DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0);
+            return Convert.ToInt64(ts.TotalSeconds).ToString();
+        }
+
+        /**
+        * 生成随机串，随机串包含字母或数字
+        * @return 随机串
+        */
+        public string GenerateNonceStr()
+        {
+            return Guid.NewGuid().ToString("N");
+        }
+
+        public virtual string CreateSign()
+        {
+            string sign = "";
+            foreach (var item in this)
+            {
+                if (item.Key == "sign"|| item.Key == "paySign") continue;
+                sign += item.Key + "=" + item.Value + "&";
+            }
+            if(this.MchKey.Has())
+                sign += "key=" + this.MchKey;
+            LogHelper.Trace("CreateSign Str", sign);
+            if (SignType == "MD5")
+            {
+                sign = SecurityHelper.GetMd5Hash(sign);
+            }
+            else if (SignType == "HMAC-SHA256")
+            {
+                sign = CalcHMACSHA256Hash(sign, this.MchKey);
+            }
+            this["sign"] = sign;
+            return sign;
+        }
+
+        public bool IsSet(string key)
+        {
+            if (!this.ContainsKey(key)) return false;
+            return this[key].Has();
+        }
+
+        public virtual bool CheckSign()
+        {
+            //如果没有设置签名，则跳过检测
+            if (!this.IsSet("sign"))
+            {
+                LogHelper.Error("CheckSign", "签名不存在!");
+                return false;
+            }
+            //获取接收到的签名
+            string return_sign = this["sign"];          
+
+            //在本地计算新的签名
+            string cal_sign = CreateSign();
+
+            if (cal_sign == return_sign)
+            {
+                return true;
+            }
+            return true;
+        }
+
+
+        private string CalcHMACSHA256Hash(string plaintext, string salt)
+        {
+            string result = "";
+            var enc = Encoding.Default;
+            byte[]
+            baText2BeHashed = enc.GetBytes(plaintext),
+            baSalt = enc.GetBytes(salt);
+            System.Security.Cryptography.HMACSHA256 hasher = new HMACSHA256(baSalt);
+            byte[] baHashedText = hasher.ComputeHash(baText2BeHashed);
+            result = string.Join("", baHashedText.ToList().Select(b => b.ToString("x2")).ToArray());
+            return result;
+        }
+
+        public string ToXml()
+        {
+            CreateSign();
+            StringBuilder sb = new StringBuilder("<xml>\n");
+            foreach (var item in this)
+            {
+                string key = item.Key;
+                sb.Append("\t<").Append(key).Append("><![CDATA[").Append(item.Value).Append("]]></").Append(key)
+                    .Append(">\n");
+            }
+
+            return sb.Append("</xml>").ToString();
+        }
+
+        public WxPayChecker FromXml(string xml)
+        {
+            if (string.IsNullOrEmpty(xml))
+            {
+                return null;
+            }
+
+            LogHelper.Info("FromXml", xml);
+
+            this.Clear();
+            XmlDocument xmlDoc = new XmlDocument() { XmlResolver = null };
+            xmlDoc.LoadXml(xml);
+            XmlNode xmlNode = xmlDoc.FirstChild;//获取到根节点<xml>
+            XmlNodeList nodes = xmlNode.ChildNodes;
+            foreach (XmlNode xn in nodes)
+            {
+                XmlElement xe = (XmlElement)xn;
+                this[xe.Name] = xe.InnerText;//获取xml的键值对到WxPayData内部的数据中
+            }
+            if (!CheckSign())
+            {
+                return null;
+            }
+            return this;
+        }
+
+        public WxPayChecker FromXmlNoCheckSign(string xml)
+        {
+            if (string.IsNullOrEmpty(xml))
+            {
+                return null;
+            }
+
+            LogHelper.Info("FromXml", xml);
+
+            this.Clear();
+            XmlDocument xmlDoc = new XmlDocument() { XmlResolver = null };
+            xmlDoc.LoadXml(xml);
+            XmlNode xmlNode = xmlDoc.FirstChild;//获取到根节点<xml>
+            XmlNodeList nodes = xmlNode.ChildNodes;
+            foreach (XmlNode xn in nodes)
+            {
+                XmlElement xe = (XmlElement)xn;
+                this[xe.Name] = xe.InnerText;//获取xml的键值对到WxPayData内部的数据中
+            }           
+            return this;
+        }
+
+    }
+}