/Common/AliPay.cs

using System;

using System.Collections.Generic;

using System.Collections.Specialized;

using System.IO;

using System.Net;

using System.Security.Cryptography;

using System.Text;

using System.Xml;

namespace YuuzleComic.Common {

	/// <summary>

	/// ??????

	/// </summary>

	public class AliPay {

		public Dictionary<string, string> Config { set; get; }

		private Dictionary<string, string> sPara = new Dictionary<string, string>();

		public string PayGetWay { set; get; }

		public string NotifyGetWay { set; get; }

		public string LogFilePath { get; set; }

		public AliPay()

			: this("") {

		}

		public AliPay(string hosturl) {

			#region ??????

			Config = new Dictionary<string, string>();

			Config["partner"] = "2088302492797137";

			Config["key"] = "ub1y7vomann13oy3rfpir7wfrplwrp6y";

			Config["seller_email"] = "admin@foosun.net";

			Config["return_url"] = hosturl + "/user/info/AlipayNotify.aspx";

			Config["notify_url"] = hosturl + "/user/info/AlipayNotify.aspx";

			Config["show_url"] = hosturl + "/user/info/history.aspx?type=2";

			Config["mainname"] = "????????????";

			#endregion



			#region ??????

			Config["_input_charset"] = "utf-8";

			Config["sign_type"] = "MD5";

			//??????????????

			Config["transport"] = "https";

			#endregion



			#region ????

			PayGetWay = "https://www.alipay.com/cooperate/gateway.do";

			NotifyGetWay = "http://notify.alipay.com/trade/notify_query.do";

			#endregion

		}



		#region ????

		public bool Notify(SortedDictionary<string, string> request) {

			if (Config["transport"] == "https") {

				NotifyGetWay = PayGetWay;

			}

			sPara = Para_filter(request);

			string preSignStr = DicToQueryString(sPara);

			string mysign = Build_mysign(sPara, Config["key"], Config["sign_type"], Config["_input_charset"]);

			string responseTxt = Verify(sPara["notify_id"]);

			string sWord = "responseTxt=" + responseTxt + "\n notify_url_log:sign=" + request["sign"] + "&mysign=" + mysign + "\n notify??????" + preSignStr;

			if (request["sign"] == mysign && responseTxt == "true") {

				return true;

			}

			else {

				log_result(LogFilePath, sWord);

				return false;

			}

		}



		/// <summary>

		/// ????????????????

		/// </summary>

		/// <returns>????</returns>

		private string Verify(string notify_id) {

			UriBuilder veryfy = new UriBuilder(NotifyGetWay);

			string query = "";

			if (Config["transport"] == "https") {

				query = "service=notify_verify&";

			}

			veryfy.Query = query + "partner=" + Config["partner"] + "&notify_id=" + notify_id;

			return Get_Http(veryfy.Uri.ToString(), 120000);

		}



		/// <summary>

		/// ???????ATN??

		/// </summary>

		/// <param name="strUrl">??URL????</param>

		/// <param name="timeout">??????</param>

		/// <returns>???ATN??</returns>

		private string Get_Http(string strUrl, int timeout) {

			string strResult;

			try {

				HttpWebRequest myReq = (HttpWebRequest)HttpWebRequest.Create(strUrl);

				myReq.Timeout = timeout;

				HttpWebResponse HttpWResp = (HttpWebResponse)myReq.GetResponse();

				Stream myStream = HttpWResp.GetResponseStream();

				StreamReader sr = new StreamReader(myStream, Encoding.Default);

				StringBuilder strBuilder = new StringBuilder();

				while (-1 != sr.Peek()) {

					strBuilder.Append(sr.ReadLine());

				}



				strResult = strBuilder.ToString();

			}

			catch (Exception exp) {

				strResult = "???" + exp.Message;

			}



			return strResult;

		}



		#endregion



		#region ????

		/// <summary>

		/// ??????HTML

		/// </summary>

		/// <param name="sendType">???????GET?POST?????</param>

		/// <returns>?? ????HTML??</returns>

		public string Build_Form(string sendType) {

			StringBuilder sbHtml = new StringBuilder();

			sendType = sendType.ToLower();

			if (sendType != "post") {

				sendType = "get";

			}



			sbHtml.Append("<form id=\"alipaysubmit\" name=\"alipaysubmit\" action=\"" + PayGetWay + "_input_charset=" + Config["_input_charset"] + "\" method=\"" + sendType.ToLower() + "\">");



			foreach (KeyValuePair<string, string> temp in sPara) {

				sbHtml.Append("<input type=\"hidden\" name=\"" + temp.Key + "\" value=\"" + temp.Value + "\"/>");

			}



			sbHtml.Append("<input type=\"hidden\" name=\"sign\" value=\"" + sPara["sign"] + "\"/>");

			sbHtml.Append("<input type=\"hidden\" name=\"sign_type\" value=\"" + sPara["sign_type"] + "\"/>");



			//submit?????????name??

			sbHtml.Append("<input type=\"submit\" value=\"???????\"></form>");

			sbHtml.Append("<script>document.forms['alipaysubmit'].submit();</script>");

			return sbHtml.ToString();

		}



		/// <summary>

		/// ?????????URL?????

		/// </summary>

		/// <returns>?????URL????????</returns>

		public string Build_GetUrl() {

			UriBuilder urlBuilder = new UriBuilder(PayGetWay);

			urlBuilder.Query = DicToQueryString(sPara);

			return urlBuilder.Uri.ToString();

		}



		/// <summary>

		/// ??????????

		/// </summary>

		/// <param name="out_trade_no">???</param>

		/// <param name="subject">??</param>

		/// <param name="body">??</param>

		/// <param name="total_fee">??</param>

		public void CreateDirectPayByUser(string out_trade_no, string subject, string body, string total_fee) {

			var para = GetConfig();

			para.Add("service", "create_direct_pay_by_user");

			para.Add("payment_type", "1");

			para.Add("out_trade_no", out_trade_no);

			para.Add("subject", subject);

			para.Add("body", body);

			para.Add("total_fee", total_fee);

			//param.Add("paymethod", paymethod);

			//param.Add("defaultbank", defaultbank);

			//param.Add("anti_phishing_key", anti_phishing_key);

			//param.Add("exter_invoke_ip", exter_invoke_ip);

			//param.Add("extra_common_param", extra_common_param);

			//param.Add("buyer_email", buyer_email);

			//param.Add("royalty_type", royalty_type);

			//param.Add("royalty_parameters", royalty_parameters);

			sPara = Para_filter(para);

			sPara.Add("sign", Build_mysign(sPara, para["key"], para["sign_type"], para["_input_charset"]));

			sPara.Add("sign_type", Config["sign_type"]);

		}



		/// <summary>

		/// ??????????

		/// </summary>

		/// <param name="out_trade_no">???</param>

		/// <param name="subject">??</param>

		/// <param name="body">??</param>

		/// <param name="price">??</param>

		public void CreatePartnerTradeByBuyer(string out_trade_no, string subject, string body, string price) {

			var para = GetConfig();

			para.Add("service", "create_partner_trade_by_buyer");

			para.Add("payment_type", "1");

			para.Add("out_trade_no", out_trade_no);

			para.Add("subject", subject);

			para.Add("body", body);

			para.Add("price", price);

			sPara = Para_filter(para);

			sPara.Add("sign", Build_mysign(sPara, para["key"], para["sign_type"], para["_input_charset"]));

			sPara.Add("sign_type", Config["sign_type"]);

		}



		/// <summary>

		/// ?????????

		/// </summary>

		/// <param name="out_trade_no">???</param>

		/// <param name="subject">??</param>

		/// <param name="body">??</param>

		/// <param name="price">??</param>

		public void TradeCreateByBuyer(string out_trade_no, string subject, string body, string price) {

			var para = GetConfig();

			para.Add("service", "trade_create_by_buyer");

			para.Add("payment_type", "1");

			para.Add("out_trade_no", out_trade_no);

			para.Add("subject", subject);

			para.Add("body", body);

			para.Add("price", price);

			sPara = Para_filter(para);

			sPara.Add("sign", Build_mysign(sPara, para["key"], para["sign_type"], para["_input_charset"]));

			sPara.Add("sign_type", Config["sign_type"]);

		}

		#endregion



		#region ????

		/// <summary>

		/// ?????????

		/// </summary>

		/// <param name="request">??</param>

		/// <returns>??????</returns>

		public SortedDictionary<string, string> RequestToDic(NameValueCollection request) {

			SortedDictionary<string, string> sArray = new SortedDictionary<string, string>();

			String[] requestItem = request.AllKeys;

			for (int i = 0; i < requestItem.Length; i++) {

				sArray.Add(requestItem[i], request[requestItem[i]]);

			}

			return sArray;

		}



		/// <summary>

		/// ?????????

		/// </summary>

		/// <returns>????????</returns>

		public SortedDictionary<string, string> GetConfig() {

			SortedDictionary<string, string> param = new SortedDictionary<string, string>();

			foreach (var item in Config) {

				param.Add(item.Key, item.Value);

			}

			return param;

		}



		/// <summary>

		/// ??????????“??=???”????“&”????????

		/// </summary>

		/// <param name="dicArray">???????</param>

		/// <returns>??????????</returns>

		public string DicToQueryString(Dictionary<string, string> dicArray) {

			StringBuilder queryBuilder = new StringBuilder();

			foreach (KeyValuePair<string, string> temp in dicArray) {

				queryBuilder.Append(temp.Key + "=" + temp.Value + "&");

			}

			string queryString = queryBuilder.ToString();

			return queryString.Substring(0, queryString.Length - 1);

		}



		/// <summary>

		/// ?????????????

		/// </summary>

		/// <param name="dicArrayPre">???????</param>

		/// <returns>???????</returns>

		public Dictionary<string, string> Para_filter(SortedDictionary<string, string> dicArrayPre) {

			Dictionary<string, string> dicArray = new Dictionary<string, string>();

			foreach (KeyValuePair<string, string> temp in dicArrayPre) {

				if (temp.Key.ToLower() != "sign"

					&& temp.Key.ToLower() != "key"

					&& temp.Key.ToLower() != "sign_type"

					&& temp.Key.ToLower() != "transport"

					&& !string.IsNullOrEmpty(temp.Value)) {

					dicArray.Add(temp.Key.ToLower(), temp.Value);

				}

			}

			return dicArray;

		}



		/// <summary>

		/// ??????

		/// </summary>

		/// <param name="sArray">??????</param>

		/// <param name="key">?????</param>

		/// <param name="sign_type">????</param>

		/// <param name="_input_charset">????</param>

		/// <returns>???????</returns>

		public string Build_mysign(Dictionary<string, string> dicArray, string key, string sign_type, string _input_charset) {

			string prestr = DicToQueryString(dicArray);  //??????????“??=???”????“&”????????

			prestr = prestr + key;                      //?????????????????????

			string mysign = Sign(prestr, sign_type, _input_charset);	//????????????????

			return mysign;

		}



		/// <summary>

		/// ?????

		/// </summary>

		/// <param name="prestr">????????</param>

		/// <param name="sign_type">????</param>

		/// <param name="_input_charset">????</param>

		/// <returns>????</returns>

		public static string Sign(string prestr, string sign_type, string _input_charset) {

			StringBuilder sb = new StringBuilder(32);

			if (sign_type.ToUpper() == "MD5") {

				MD5 md5 = new MD5CryptoServiceProvider();

				byte[] t = md5.ComputeHash(Encoding.GetEncoding(_input_charset).GetBytes(prestr));

				for (int i = 0; i < t.Length; i++) {

					sb.Append(t[i].ToString("x").PadLeft(2, '0'));

				}

			}

			return sb.ToString();

		}



		/// <summary>

		/// ?????????????????????????????

		/// </summary>

		/// <param name="sPath">?????????</param>

		/// <param name="sWord">???????????</param>

		public void log_result(string sPath, string sWord) {

			StreamWriter fs = new StreamWriter(sPath, false, System.Text.Encoding.Default);

			fs.Write(sWord);

			fs.Close();

		}



		/// <summary>

		/// ??????????query_timestamp???????????

		/// ???????XML????IIS???????

		/// </summary>

		/// <returns>??????</returns>

		public string Query_timestamp() {

			string url = "https://mapi.alipay.com/gateway.do?service=query_timestamp&partner=" + Config["partner"];

			string encrypt_key = "";



			XmlTextReader Reader = new XmlTextReader(url);

			XmlDocument xmlDoc = new XmlDocument();

			xmlDoc.Load(Reader);



			encrypt_key = xmlDoc.SelectSingleNode("/alipay/response/timestamp/encrypt_key").InnerText;



			return encrypt_key;

		}

		#endregion

	}

}