mp-main/AppStart/WeChatFunctionForHD.cs

using System;
using System.Collections.Generic;
using Library;
using LitJson;
using System.Linq;
using System.Security.Cryptography.X509Certificates;
using System.Security.Cryptography;
using System.Text;
using System.IO;
using System.Net;
using System.Web;
using MySystem.Models;
using Org.BouncyCastle.Crypto.Modes;
using Org.BouncyCastle.Crypto.Parameters;
using Org.BouncyCastle.Crypto.Engines;

namespace MySystem
{
    public class WeChatFunctionForHD
    {
        public readonly static WeChatFunctionForHD Instance = new WeChatFunctionForHD();
        private WeChatFunctionForHD()
        { }

        public string MchId = "178590308";
        public string ApiKey = "XTH7TLTSJH4SOZC3NVFQJ726B5VRNVO6"; //AesGcmDecrypt解密使用
        public string serialNo = "5293C873581457469F1BE1839EA127B08ADE2D7B";
        public string getSerialNo = "7C6E6AD5DA1F7EB4A1071F2333C2FED0D8CC3A46";  //平台证书序列号Wechatpay-Serial
        // string pubkey = "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"; //公钥
        string pubkey = "MIIEFDCCAvygAwIBAgIUfG5q1doffrShBx8jM8L+0NjMOkYwDQYJKoZIhvcNAQELBQAwXjELMAkGA1UEBhMCQ04xEzARBgNVBAoTClRlbnBheS5jb20xHTAbBgNVBAsTFFRlbnBheS5jb20gQ0EgQ2VudGVyMRswGQYDVQQDExJUZW5wYXkuY29tIFJvb3QgQ0EwHhcNMjMwODE3MTA0NzAxWhcNMjgwODE1MTA0NzAxWjBuMRgwFgYDVQQDDA9UZW5wYXkuY29tIHNpZ24xEzARBgNVBAoMClRlbnBheS5jb20xHTAbBgNVBAsMFFRlbnBheS5jb20gQ0EgQ2VudGVyMQswCQYDVQQGDAJDTjERMA8GA1UEBwwIU2hlblpoZW4wggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQC7z1k/J0F1FK8ZC2zKyHhhCHPJX8YEFg4Ruaj4XDU4eoBzbTXS+wN1gJCLqXMw5uam6L5NO3jXaHHC6izTKhAog1jiO+mfcXKpno/EtZ1be2xKOguqPNIOrw7aPDoAcytrUy2wsLCpM6+LFIa+tBXwzOuVauXtcWqtXrL75Wo/NEMMcfe4lsFxPatdkF90BodDfMB6niVQyNkVqBhtdQQzBrPOjpNBX4f2WpcMpEy7TSge5VxCXGGSYW+E5xYzmiloRR0d1eJA7tdJ8VOdNbvaZSPSPHARZM7LsNC43bXMQJUpymRTf2wpV+imiB4XYL6Vx1gk2G77jdWPtLXLbZ8LAgMBAAGjgbkwgbYwCQYDVR0TBAIwADALBgNVHQ8EBAMCA/gwgZsGA1UdHwSBkzCBkDCBjaCBiqCBh4aBhGh0dHA6Ly9ldmNhLml0cnVzLmNvbS5jbi9wdWJsaWMvaXRydXNjcmw/Q0E9MUJENDIyMEU1MERCQzA0QjA2QUQzOTc1NDk4NDZDMDFDM0U4RUJEMiZzZz1IQUNDNDcxQjY1NDIyRTEyQjI3QTlEMzNBODdBRDFDREY1OTI2RTE0MDM3MTANBgkqhkiG9w0BAQsFAAOCAQEAEFh9Tm1uH1ZbQ3Nz/bxRlkYb6Y/O5buAoptMMJb95QIiTODtRx8+f8eXHVQ+slP2MuzrEGfGuoJ2c/clcEmjG4WGMm3h8hTXlL/jBKn8jW2qKj1gVlHdn+V9qdhy2gaS9VV6ZSdtpZmkqCYxfg9DI4GF+CjNxCxfpYH9Qd/gKe/anA5ps4j1j/ZUnQtIBhgcRyXhh7e5NOa6LM+1ui+wNb1uUSiick6oYiSo6FlnblBRQ6Yvx9OSJasqqD/5rl59eikibUhX2qgBeRlIsJOBUvUkl+Pdl/b86e+jirclYqxIWApv79BLR7akw6y94XEgMXOuGt5Xf1LzN3AW3OmKAQ=="; //公钥(通过GetPlatCert方法获取证书，解密得到)

        // string prikey = "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"; //私钥
        string prikey = "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"; //私钥


        #region 间连商户开户意愿确认（提交申请单）

        public string MerchantApply(MerchantAddInfo info)
        {
            Dictionary<string, object> result = new Dictionary<string, object>();
            string business_code = DateTime.Now.ToString("yyyyMMddHHmmssfff") + function.get_Random(8);
            result.Add("business_code", business_code); //业务申请编号

            WebCMSEntities dbpxc = new WebCMSEntities();
            //超级管理员信息
            Dictionary<string, object> contact_info = new Dictionary<string, object>();
            contact_info.Add("contact_type", "LEGAL"); //联系人类型
            contact_info.Add("name", RSAEncrypt(info.CertLegalPerson)); //联系人姓名
            contact_info.Add("id_card_number", RSAEncrypt(info.IdCardNumber)); //超级管理员身份证件号码
            contact_info.Add("contact_id_doc_type", "IDENTIFICATION_TYPE_IDCARD"); //联系人证件类型            
            contact_info.Add("mobile", RSAEncrypt(info.MobilePhone)); //联系手机
            result.Add("contact_info", contact_info);

            //主体资料
            Dictionary<string, object> subject_info = new Dictionary<string, object>();
            string SubjectType = info.SubjectType;
            if(SubjectType == "SUBJECT_TYPE_SMALL") SubjectType = "SUBJECT_TYPE_MICRO";
            subject_info.Add("subject_type", SubjectType); //主体类型

            Dictionary<string, object> business_licence_info = new Dictionary<string, object>();
            business_licence_info.Add("licence_number", info.LicenseNumber); //注册号/统一社会信用代码
            business_licence_info.Add("licence_copy", GetMediaId("/" + info.LicenseCopy)); //营业执照照片
            business_licence_info.Add("merchant_name", info.CertMerchantName); //商户名称
            business_licence_info.Add("legal_person", info.CertLegalPerson); //个体户经营者/法人姓名
            business_licence_info.Add("company_address", info.BizStoreAddress); //注册地址
            string PeriodEnd = info.PeriodEnd.Value.ToString("yyyy-MM-dd");
            if(PeriodEnd.Substring(0, 4) == "2050")
            {
                PeriodEnd = "forever";
            }
            business_licence_info.Add("licence_valid_date", "[\"" + info.PeriodBegin.Value.ToString("yyyy-MM-dd") + "\",\"" + PeriodEnd + "\"]"); //营业执照有效日期
            
            subject_info.Add("business_licence_info", business_licence_info); //营业执照
            result.Add("subject_info", subject_info);

            Dictionary<string, object> identification_info = new Dictionary<string, object>();
            identification_info.Add("id_holder_type", "LEGAL"); //证件持有人类型
            identification_info.Add("identification_type", "IDENTIFICATION_TYPE_IDCARD"); //证件类型
            identification_info.Add("identification_name", RSAEncrypt(info.CertLegalPerson)); //身份证姓名
            identification_info.Add("identification_number", RSAEncrypt(info.IdCardNumber)); //身份证号码
            string CardPeriodEnd = info.CardPeriodEnd.Value.ToString("yyyy-MM-dd");
            if(CardPeriodEnd.Substring(0, 4) == "2050")
            {
                CardPeriodEnd = "forever";
            }
            identification_info.Add("identification_valid_date", "[\"" + info.CardPeriodBegin.Value.ToString("yyyy-MM-dd") + "\",\"" + CardPeriodEnd + "\"]"); //身份证有效期
            identification_info.Add("identification_front_copy", GetMediaId("/" + info.IdCardCopy)); //身份证件正面照片
            identification_info.Add("identification_back_copy", GetMediaId("/" + info.IdCardNational)); //身份证件反面照片
            if(info.SubjectType == "SUBJECT_TYPE_ENTERPRISE")
            {
                identification_info.Add("identification_address", RSAEncrypt(info.IdCardAddress)); //身份证居住地址
                identification_info.Add("owner", true);
            }
            result.Add("identification_info", identification_info); //经营者/法人身份证件


            //最终受益人信息列表(UBO)----仅企业需要填写
            if(info.SubjectType == "SUBJECT_TYPE_ENTERPRISE")
            {
                List<Dictionary<string, object>> ubo_info_list = new List<Dictionary<string, object>>();
                Dictionary<string, object> ubo_info_list_item = new Dictionary<string, object>();
                ubo_info_list_item.Add("ubo_id_doc_type", "IDENTIFICATION_TYPE_IDCARD"); //证件类型
                ubo_info_list_item.Add("ubo_id_doc_copy", GetMediaId("/" + info.IdCardCopy)); //身份证件正面照片
                ubo_info_list_item.Add("ubo_id_doc_copy_back", GetMediaId("/" + info.IdCardNational)); //身份证件反面照片
                ubo_info_list_item.Add("ubo_id_doc_name", RSAEncrypt(info.CertLegalPerson)); //身份证姓名
                ubo_info_list_item.Add("ubo_id_doc_number", RSAEncrypt(info.IdCardNumber)); //身份证号码
                ubo_info_list_item.Add("ubo_id_doc_address", RSAEncrypt(info.IdCardAddress)); //身份证居住地址
                ubo_info_list_item.Add("ubo_period_begin", info.CardPeriodBegin.Value.ToString("yyyy-MM-dd")); //身份证有效期
                if(CardPeriodEnd == "forever")
                {
                    CardPeriodEnd = "长期";
                }
                ubo_info_list_item.Add("ubo_period_end", CardPeriodEnd); //身份证有效期
                ubo_info_list.Add(ubo_info_list_item);
                result.Add("ubo_info_list", ubo_info_list);
            }
            dbpxc.Dispose();

            string req = Newtonsoft.Json.JsonConvert.SerializeObject(result);
            // 如何查看证书序列号？
            // 登陆商户平台【API安全】->【API证书】->【查看证书】，可查看商户API证书序列号。
            // 商户API证书和微信支付平台证书均可以使用第三方的证书解析工具，查看证书内容。或者使用openssl命令行工具查看证书序列号。
            // $ openssl x509 -in 1900009191_20180326_cert.pem -noout -serial
            // serial=1DDE55AD98ED71D6EDD4A4A16996DE7B47773A8C
            function.WriteLog(req, "间连商户开户意愿确认");
            string resp = postJson("https://api.mch.weixin.qq.com/v3/apply4subject/applyment", req);
            function.WriteLog(resp + "\n\n", "间连商户开户意愿确认");
            return resp;
        }

        #endregion



        #region 获取平台证书

        public string GetPlatCert()
        { 
            string merchantId = MchId;   //商户号
            string result = postJson("https://api.mch.weixin.qq.com/v3/certificates", "", "GET");
            return result;
        }

        #endregion

        #region 敏感信息加密

        public string RSAEncrypt(string text)
        {
            byte[] publicKey = Convert.FromBase64String(pubkey);
            // var rsa = RSA.Create();
            // rsa.ImportRSAPublicKey(publicKey, out _);
            // var buff = rsa.Encrypt(Encoding.UTF8.GetBytes(text), RSAEncryptionPadding.OaepSHA1);
            // return Convert.ToBase64String(buff);
            using (var x509 = new X509Certificate2(publicKey))
            {
                using (var rsa = x509.GetRSAPublicKey())
                {
                    var buff = rsa.Encrypt(Encoding.UTF8.GetBytes(text), RSAEncryptionPadding.OaepSHA1);
                    return Convert.ToBase64String(buff);
                }
            }
        }
        public string RSADecrypt(string text)
        {
            byte[] key = Encoding.UTF8.GetBytes(AppConfig.WeChatParam.AesGemKey);
            byte[] nonce = Encoding.UTF8.GetBytes("1234567890ab");
            byte[] ciphertext = Convert.FromBase64String(text);

            AesGcm aes = new AesGcm(key);
            byte[] plaintext = new byte[ciphertext.Length];
            aes.Decrypt(nonce, ciphertext, plaintext, null);
            return Encoding.UTF8.GetString(plaintext);
        }
        public string AesGcmDecrypt(string associatedData, string nonce, string ciphertext)
        {
            // GcmBlockCipher gcmBlockCipher = new GcmBlockCipher(new AesEngine());
            // AeadParameters aeadParameters = new AeadParameters(
            //     new KeyParameter(Encoding.UTF8.GetBytes(AppConfig.WeChatParam.AesGemKey)), 
            //     128, 
            //     Encoding.UTF8.GetBytes(nonce), 
            //     Encoding.UTF8.GetBytes(associatedData));
            // gcmBlockCipher.Init(false, aeadParameters);
    
            // byte[] data = Convert.FromBase64String(ciphertext);
            // byte[] plaintext = new byte[gcmBlockCipher.GetOutputSize(data.Length)];
            // int length = gcmBlockCipher.ProcessBytes(data, 0, data.Length, plaintext, 0);
            // gcmBlockCipher.DoFinal(plaintext, length);
            // return Encoding.UTF8.GetString(plaintext);

            byte[] key = Encoding.UTF8.GetBytes(ApiKey); // 256-bit key
            byte[] nonceByte = Encoding.UTF8.GetBytes(nonce); // 96-bit nonce
            byte[] cipherByte = Convert.FromBase64String(ciphertext);
            byte[] associatedByte = Encoding.UTF8.GetBytes(associatedData);

            GcmBlockCipher cipher = new GcmBlockCipher(new AesEngine());
            AeadParameters parameters = new AeadParameters(new KeyParameter(key), 128, nonceByte, associatedByte);
            cipher.Init(false, parameters);

            byte[] plaintext = new byte[cipher.GetOutputSize(cipherByte.Length)];
            int len = cipher.ProcessBytes(cipherByte, 0, cipherByte.Length, plaintext, 0);
            cipher.DoFinal(plaintext, len);
            return Encoding.UTF8.GetString(plaintext);
        }
        public string postJson(string url, string postData, string method = "POST")
        {
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
            request.Method = method;
            request.ContentType = "application/json;charset=UTF-8";
            request.UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3100.0 Safari/537.36";
            request.Accept = "application/json";

            string Authorization = GetAuthorization(url, method, postData, prikey, MchId, serialNo);
            request.Headers.Add("Authorization", Authorization);
            request.Headers.Add("Wechatpay-Serial", getSerialNo);
            if (!string.IsNullOrEmpty(postData))
            {
                byte[] paramJsonBytes;
                paramJsonBytes = System.Text.Encoding.UTF8.GetBytes(postData);
                request.ContentLength = paramJsonBytes.Length;
                Stream writer;
                try
                {
                    writer = request.GetRequestStream();
                }
                catch (Exception ex)
                {
                    writer = null;
                    function.WriteLog(DateTime.Now.ToString() + "\n" + ex.ToString(), "http请求异常");
                }
                writer.Write(paramJsonBytes, 0, paramJsonBytes.Length);
                writer.Close();
            }

            HttpWebResponse response;
            try
            {
                response = (HttpWebResponse)request.GetResponse();
            }
            catch (WebException ex)
            {
                response = ex.Response as HttpWebResponse;
            }
            Stream resStream = response.GetResponseStream();
            StreamReader reader = new StreamReader(resStream);
            string text = reader.ReadToEnd();
            return text;
            //{\"code\":\"PARAM_ERROR\",\"message\":\"请确认待处理的消息是否为加密后的密文\"}
            //{\"applyment_id\":2000002247709762}
        }

        #endregion

        #region 图片上传

        public string GetMediaId(string imgPath)
        {
            if (string.IsNullOrEmpty(imgPath))
            {
                return "";
            }
            if (imgPath.Contains(","))
            {
                imgPath = imgPath.Split(',')[0];
            }
            string key = "wechatpic:" + function.MD5_16(imgPath);
            string media_id = RedisDbconn.Instance.Get<string>(key);
            if (!string.IsNullOrEmpty(media_id))
            {
                return media_id;
            }
            string filePath = function.getPath(imgPath);
            var filename = Path.GetFileName(filePath);
            FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read);
            Byte[] imgBytesIn = new Byte[fs.Length];
            fs.Read(imgBytesIn, 0, imgBytesIn.Length);
            fs.Close();

            byte[] hash = SHA256Managed.Create().ComputeHash(imgBytesIn);

            StringBuilder builder = new StringBuilder();
            for (int i = 0; i < hash.Length; i++)
            {
                builder.Append(hash[i].ToString("x2"));
            }
            var sha256 = builder.ToString();
            string metaStr = "{\"filename\":\""+ filename + "\",\"sha256\":\"" + sha256 + "\"}";
            media_id = UploadImgApi(metaStr, imgBytesIn, filename);
            RedisDbconn.Instance.Set(key, media_id);
            return media_id;
        }

        public string UploadImgApi(string metaStr, Byte[] imgBytesIn,string filename)
        {
            string url = "https://api.mch.weixin.qq.com/v3/merchant/media/upload";
            
            string merchantId = MchId;   //商户号
            string privateKey = prikey;
            #region 定义请求体中的内容 并转成二进制

            string boundary = "lc199aecd61b4653ef";
            string Enter = "\r\n";
            string campaignIDStr1
                = "--" + boundary
                + Enter
                + "Content-Disposition: form-data; name=\"meta\";"
                + Enter
                + "Content-Type:application/json;"
                + Enter
                + Enter
                + metaStr
                + Enter
                + "--" + boundary
                + Enter
                + "Content-Disposition:form-data;name=\"file\";filename=\""+ filename + "\";"
                + Enter
                + "Content-Type:image/jpeg"
                + Enter
                + Enter;
            byte[] byteData2
                = imgBytesIn;
            string campaignIDStr3 
                = Enter
                + "--" + boundary 
                + Enter;
            var byteData1 = System.Text.Encoding.UTF8.GetBytes(campaignIDStr1);

            var byteData3 = System.Text.Encoding.UTF8.GetBytes(campaignIDStr3);
            #endregion

            string transactionsResponse = UploadImg_postJson(url, byteData1, byteData2, byteData3, metaStr, privateKey, merchantId, serialNo, boundary, "POST");
            var result=JsonMapper.ToObject(transactionsResponse);
            return result["media_id"].ToString();
        }
        public string UploadImg_postJson(string url, byte[] b1, byte[] b2, byte[] b3, string metaStr, string privateKey, string merchantId, string serialNo, string boundary, string method = "POST")
        {
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
            request.Method = method;
            //request.ContentType = "application/json;charset=UTF-8";
            request.ContentType = "multipart/form-data;boundary=" + boundary;
            request.UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3100.0 Safari/537.36";
            request.Accept = "application/json";
            string Authorization = GetAuthorization(url, method, metaStr, privateKey, merchantId, serialNo);
            request.Headers.Add("Authorization", Authorization);

            Stream writer;
            try
            {
                writer = request.GetRequestStream();
            }
            catch (Exception)
            {
                writer = null;
            }
            writer.Write(b1, 0, b1.Length);
            writer.Write(b2, 0, b2.Length);
            writer.Write(b3, 0, b3.Length);
            writer.Close();

            HttpWebResponse response;
            try
            {
                response = (HttpWebResponse)request.GetResponse();
            }
            catch (WebException ex)
            {
                response = ex.Response as HttpWebResponse;
            }
            Stream resStream = response.GetResponseStream();
            StreamReader reader = new StreamReader(resStream);
            string text = reader.ReadToEnd();
            return text;
        }
        protected string GetAuthorization(string url, string method, string jsonParame, string privateKey, string merchantId, string serialNo)
        {
            var uri = new Uri(url);
            string urlPath = uri.PathAndQuery;
            string nonce = Guid.NewGuid().ToString();
            var timestamp = DateTimeOffset.Now.ToUnixTimeSeconds();
            //数据签名     HTTP请求方法\n接口地址的url\n请求时间戳\n请求随机串\n请求报文主体\n
            method = string.IsNullOrEmpty(method) ? "" : method;
            string message = string.Format("{0}\n{1}\n{2}\n{3}\n{4}\n", method, urlPath, timestamp, nonce, jsonParame);
            string signTxt = Sign(message, privateKey);

            //Authorization和格式
            string authorzationTxt = string.Format("WECHATPAY2-SHA256-RSA2048 mchid=\"{0}\",nonce_str=\"{1}\",timestamp=\"{2}\",serial_no=\"{3}\",signature=\"{4}\"",
                merchantId,
                nonce,
                timestamp,
                serialNo,
                signTxt
                );
            return authorzationTxt;
        }

        protected string Sign(string message, string privateKey)
        {
            byte[] keyData = Convert.FromBase64String(privateKey);
            byte[] data = System.Text.Encoding.UTF8.GetBytes(message);
            var rsa = RSA.Create();
            rsa.ImportPkcs8PrivateKey(keyData, out _);
            return Convert.ToBase64String(rsa.SignData(data, HashAlgorithmName.SHA256, RSASignaturePadding.Pkcs1));

            // using (CngKey cngKey = CngKey.Import(keyData, CngKeyBlobFormat.Pkcs8PrivateBlob))
            // using (RSACng rsa = new RSACng(cngKey))
            // {
            //     return Convert.ToBase64String(rsa.SignData(data, HashAlgorithmName.SHA256, RSASignaturePadding.Pkcs1));
            // }
        }

        #endregion

        #region 获取文件sha256

        public string GetSha256(FileStream stream)
        { 
            using (SHA256 mySHA256 = SHA256.Create())
            {
                byte[] hashValue = mySHA256.ComputeHash(stream);
                return Encoding.UTF8.GetString(hashValue);
            }
        }

        #endregion

        #region 判断长期

        public string CheckForever(DateTime? time)
        {
            if (time == null)
            {
                return "";
            }
            if (time.Value.Year >= 2050)
            {
                return "长期";
            }
            return time.Value.ToString("yyyy-MM-dd");
        }

        #endregion


    }
}