public async Task <(string SessionKey, string OpenId)> CodeToSession(string code)
{
try
{
// https://api.weixin.qq.com/sns/jscode2session?appid=APPID&secret=SECRET&js_code=JSCODE&grant_type=authorization_code
// {"session_key":"aNpIMqbx2dh4s4zikIBKGg==","expires_in":7200,"openid":"o21z-0E5BiJ6QE1QPlo-cyU-TJ78"}
var html = await _client.GetStringAsync($"https://api.weixin.qq.com/sns/jscode2session?appid={_wxOptions.WxAppId}&secret={_wxOptions.WxSecretKey}&js_code={code}&grant_type=authorization_code");
var sessionKey = _sessionKeyPattern.Match(html).Groups[1].Value; // // The input is not a valid Base-64 string as it contains a non-base 64 character, sometimes wexin session key returned contains some illegal base 64 character, fixed in sql.
var openId = _openIdPattern.Match(html).Groups[1].Value;
if (string.IsNullOrEmpty(openId) || string.IsNullOrEmpty(sessionKey))
{
_logger.EnqueueMessage($"{_wxOptions.WxAppId} {_wxOptions.WxSecretKey} {nameof(CodeToSession)}: {html}");
}
// Weixin bug fix, founded 2019.5.11
// The input is not a valid Base-64 string as it contains a non-base 64 character
// fixed in sql
//if(sessionKey.IndexOf("\\", StringComparison.Ordinal) != -1) sessionKey = sessionKey.Replace("\\", "");
return(sessionKey, openId);
}
catch (Exception ex)
{
_logger.EnqueueMessage($"{nameof(global::WeixinPay.Services.WeixinService)}.{nameof(CodeToSession)} error. message: {ex.Message} stackTrace: {ex.StackTrace}");
}
// If error, just return empty
return(string.Empty, string.Empty);
}
public async Task <(bool IsCompleted, string Result)> SendAsync(string receiver, string paramString, string templateCode)
{
if (string.IsNullOrEmpty(receiver) || !RegexCache.MobilePattern.IsMatch(receiver))
{
throw new ArgumentException("Invalid receiver number", nameof(receiver));
}
if (string.IsNullOrEmpty(paramString))
{
throw new ArgumentNullException(nameof(paramString));
}
if (string.IsNullOrEmpty(templateCode))
{
throw new ArgumentNullException(nameof(templateCode));
}
var timestamp = DateTime.Now.ToUniversalTime().ToString("yyyy-MM-ddTHH:mm:ssZ");
var nonce = Guid.NewGuid().ToString();
StringBuilder builder = new StringBuilder();
// system and business parameters, already order by asc.
builder.Append($"AccessKeyId={_options.AliSmsAccessKeyId}&");
builder.Append("Action=SendSms&");
builder.Append("Format=XML&");
builder.Append($"PhoneNumbers={PercentEncode(receiver)}&");
builder.Append($"RegionId={PercentEncode("cn-hangzhou")}&");
builder.Append($"SignName={PercentEncode(_options.AliSmsSignName)}&");
builder.Append("SignatureMethod=HMAC-SHA1&");
builder.Append($"SignatureNonce={nonce}&");
builder.Append("SignatureVersion=1.0&");
builder.Append($"TemplateCode={PercentEncode(templateCode)}&");
builder.Append($"TemplateParam={PercentEncode(paramString)}&");
builder.Append($"Timestamp={PercentEncode(timestamp)}&");
builder.Append("Version=2017-05-25");
// 计算签名
var signString = $"GET&%2F&{Regex.Replace(Encode(builder.ToString()), @"%[a-f\d]{2}", m => m.Value.ToUpperInvariant())}";
HMACSHA1 hmacsha1 = new HMACSHA1(Encoding.UTF8.GetBytes(_options.AliSmsAccessKeySecret + "&"));
var sign = Convert.ToBase64String(hmacsha1.ComputeHash(Encoding.UTF8.GetBytes(signString)));
try
{
var url = $"http://dysmsapi.aliyuncs.com/?AccessKeyId={Encode(_options.AliSmsAccessKeyId)}&Action=SendSms&Format=XML&PhoneNumbers={Encode(receiver)}&RegionId={Encode("cn-hangzhou")}&SignatureMethod=HMAC-SHA1&SignatureNonce={Encode(nonce)}&SignatureVersion=1.0&SignName={Encode(_options.AliSmsSignName)}&TemplateCode={Encode(templateCode)}&TemplateParam={Encode(paramString)}&Timestamp={Encode(timestamp)}&Version={Encode("2017-05-25")}&Signature={Encode(sign)}";
var result = await _client.GetStringAsync(url);
return(result.EndsWith("<Code>OK</Code></SendSmsResponse>", StringComparison.OrdinalIgnoreCase), result);
}
catch (Exception ex)
{
_logger.EnqueueMessage($"{nameof(AliSmsSender)}.{nameof(SendAsync)} error. message: {ex.Message} stackTrace: {ex.StackTrace}");
}
return(false, "error");
}
public async Task <bool> SendEmailAsync(string to, string subject, string body, IEnumerable <string> cc = null)
{
// Verify
if (string.IsNullOrEmpty(to))
{
throw new ArgumentNullException(nameof(to));
}
if (string.IsNullOrEmpty(subject))
{
throw new ArgumentNullException(nameof(subject));
}
if (string.IsNullOrEmpty(body))
{
throw new ArgumentNullException(nameof(body));
}
var message = new MailMessage(new MailAddress(_options.AliMailAccount, _options.AliMailDisplayName), new MailAddress(to))
{
Subject = subject, Body = body, IsBodyHtml = true
};
if (cc != null)
{
foreach (string s in cc)
{
message.CC.Add(s);
}
}
try
{
using (var smtpClient = new SmtpClient(_options.AliMailSmtp, _options.AliMailPort)
{
Credentials = new NetworkCredential(_options.AliMailAccount, _options.AliMailPassword), DeliveryMethod = SmtpDeliveryMethod.Network, EnableSsl = _options.AliMailEnableSsl
})
{
//smtpClient.Send(message);
await smtpClient.SendMailAsync(message);
}
return(true);
}
catch (Exception ex)
{
_logger.EnqueueMessage($"{nameof(AliMailSender)}.{nameof(SendEmailAsync)} error. details: {ex.Message} stackTrace: {ex.StackTrace}");
}
return(false);
}
/// <summary>
/// Get weixin prepayId
/// </summary>
/// <param name="nonceStr"></param>
/// <param name="orderPaymentId"></param>
/// <param name="amount"></param>
/// <param name="wxOpenId"></param>
/// <param name="attach"></param>
/// <param name="billCreationIp"></param>
/// <returns></returns>
private async Task <string> UnifiedOrder(string nonceStr, string orderPaymentId, decimal amount, string wxOpenId, string billCreationIp, string attach)
{
UnifiedOrder unifiedOrder = new UnifiedOrder {
MchId = _options.WxMchId,
AppId = _options.WxAppId,
NotifyUrl = _options.WxPaymentNotifyUrl,
SignType = "MD5",
TradeType = "JSAPI",
Body = $"{_options.WxPlatformName}订单",
NonceStr = nonceStr,
OutTradeNo = orderPaymentId,
TotalFee = Math.Round(amount * 100).ToString(), // unit: fen max scale is 2
SPBillCreateIP = billCreationIp,
OpenId = wxOpenId,
Attach = attach
};
// Sign
unifiedOrder.Sign = BuildSignString(unifiedOrder);
// Xml
string requestXml = BuildRequestXml(unifiedOrder);
if (_options.WxIsDebug)
{
_logger.EnqueueMessage($"UnifiedOrder: {requestXml}");
}
try
{
HttpContent content = new ByteArrayContent(Encoding.UTF8.GetBytes(requestXml));
var res = await _client.PostAsync("https://api.mch.weixin.qq.com/pay/unifiedorder", content);
string xml = await res.Content.ReadAsStringAsync();
if (_options.WxIsDebug)
{
_logger.EnqueueMessage(xml);
}
//bool isReturnSuccess = xml.IndexOf("<return_code><![CDATA[SUCCESS]]></return_code>", StringComparison.Ordinal) != -1;
bool isReturnSuccess = xml.StartsWith("<xml><return_code><![CDATA[SUCCESS]]></return_code>", StringComparison.Ordinal);
if (!isReturnSuccess)
{
return(string.Empty);
}
bool isResultSuccess = xml.IndexOf("<result_code><![CDATA[SUCCESS]]></result_code>", StringComparison.Ordinal) != -1;
return(isResultSuccess ? PrepayIdPattern.Match(xml).Groups[1].Value : string.Empty /*error*/);
}
catch (Exception ex)
{
_logger.EnqueueMessage($"{nameof(WeixinPay)}.{nameof(UnifiedOrder)} error. Message: {ex.Message} InnerMessage: {ex.InnerException?.Message} StackTrace: {ex.StackTrace}");
}
return(string.Empty);
string BuildRequestXml(UnifiedOrder order)
{
StringBuilder xmlBuilder = new StringBuilder("<xml>");
xmlBuilder.Append($"<appid>{order.AppId}</appid>");
if (!string.IsNullOrEmpty(order.Attach))
{
xmlBuilder.Append($"<attach>{order.Attach}</attach>");
}
if (!string.IsNullOrEmpty(order.Body))
{
xmlBuilder.Append($"<body>{order.Body}</body>");
}
if (!string.IsNullOrEmpty(order.Detail))
{
xmlBuilder.Append($"<detail>{order.Detail}</detail>");
}
if (!string.IsNullOrEmpty(order.DeviceInfo))
{
xmlBuilder.Append($"<device_info>{order.DeviceInfo}</device_info>");
}
if (!string.IsNullOrEmpty(order.FeeType))
{
xmlBuilder.Append($"<fee_type>{order.FeeType}</fee_type>");
}
if (!string.IsNullOrEmpty(order.GoodsTag))
{
xmlBuilder.Append($"<goods_tag>{order.GoodsTag}</goods_tag>");
}
if (!string.IsNullOrEmpty(order.LimitPay))
{
xmlBuilder.Append($"<limit_pay>{order.LimitPay}</limit_pay>");
}
if (!string.IsNullOrEmpty(order.MchId))
{
xmlBuilder.Append($"<mch_id>{order.MchId}</mch_id>");
}
if (!string.IsNullOrEmpty(order.NonceStr))
{
xmlBuilder.Append($"<nonce_str>{order.NonceStr}</nonce_str>");
}
if (!string.IsNullOrEmpty(order.NotifyUrl))
{
xmlBuilder.Append($"<notify_url>{order.NotifyUrl}</notify_url>");
}
if (!string.IsNullOrEmpty(order.OpenId))
{
xmlBuilder.Append($"<openid>{order.OpenId}</openid>");
}
if (!string.IsNullOrEmpty(order.OutTradeNo))
{
xmlBuilder.Append($"<out_trade_no>{order.OutTradeNo}</out_trade_no>");
}
if (!string.IsNullOrEmpty(order.ProductId))
{
xmlBuilder.Append($"<product_id>{order.ProductId}</product_id>");
}
if (!string.IsNullOrEmpty(order.Receipt))
{
xmlBuilder.Append($"<receipt>{order.Receipt}</receipt>");
}
if (!string.IsNullOrEmpty(order.SceneInfo))
{
xmlBuilder.Append($"<scene_info>{order.SceneInfo}</scene_info>");
}
if (!string.IsNullOrEmpty(order.Sign))
{
xmlBuilder.Append($"<sign>{order.Sign}</sign>");
}
if (!string.IsNullOrEmpty(order.SignType))
{
xmlBuilder.Append($"<sign_type>{order.SignType}</sign_type>");
}
if (!string.IsNullOrEmpty(order.SPBillCreateIP))
{
xmlBuilder.Append($"<spbill_create_ip>{order.SPBillCreateIP}</spbill_create_ip>");
}
if (!string.IsNullOrEmpty(order.TimeExpire))
{
xmlBuilder.Append($"<time_expire>{order.TimeExpire}</time_expire>");
}
if (!string.IsNullOrEmpty(order.TimeStart))
{
xmlBuilder.Append($"<time_start>{order.TimeStart}</time_start>");
}
if (!string.IsNullOrEmpty(order.TotalFee))
{
xmlBuilder.Append($"<total_fee>{order.TotalFee}</total_fee>");
}
if (!string.IsNullOrEmpty(order.TradeType))
{
xmlBuilder.Append($"<trade_type>{order.TradeType}</trade_type>");
}
return(xmlBuilder.Append("</xml>").ToString());
}
string BuildSignString(UnifiedOrder order)
{
StringBuilder signBuilder = new StringBuilder();
signBuilder.Append($"appid={order.AppId}");
if (!string.IsNullOrEmpty(order.Attach))
{
signBuilder.Append($"&attach={order.Attach}");
}
if (!string.IsNullOrEmpty(order.Body))
{
signBuilder.Append($"&body={order.Body}");
}
if (!string.IsNullOrEmpty(order.Detail))
{
signBuilder.Append($"&detail={order.Detail}");
}
if (!string.IsNullOrEmpty(order.DeviceInfo))
{
signBuilder.Append($"&device_info={order.DeviceInfo}");
}
if (!string.IsNullOrEmpty(order.FeeType))
{
signBuilder.Append($"&fee_type={order.FeeType}");
}
if (!string.IsNullOrEmpty(order.GoodsTag))
{
signBuilder.Append($"&goods_tag={order.GoodsTag}");
}
if (!string.IsNullOrEmpty(order.LimitPay))
{
signBuilder.Append($"&limit_pay={order.LimitPay}");
}
if (!string.IsNullOrEmpty(order.MchId))
{
signBuilder.Append($"&mch_id={order.MchId}");
}
if (!string.IsNullOrEmpty(order.NonceStr))
{
signBuilder.Append($"&nonce_str={order.NonceStr}");
}
if (!string.IsNullOrEmpty(order.NotifyUrl))
{
signBuilder.Append($"¬ify_url={order.NotifyUrl}");
}
if (!string.IsNullOrEmpty(order.OpenId))
{
signBuilder.Append($"&openid={order.OpenId}");
}
if (!string.IsNullOrEmpty(order.OutTradeNo))
{
signBuilder.Append($"&out_trade_no={order.OutTradeNo}");
}
if (!string.IsNullOrEmpty(order.ProductId))
{
signBuilder.Append($"&product_id={order.ProductId}");
}
if (!string.IsNullOrEmpty(order.Receipt))
{
signBuilder.Append($"&receipt={order.Receipt}");
}
if (!string.IsNullOrEmpty(order.SceneInfo))
{
signBuilder.Append($"&scene_info={order.SceneInfo}");
}
if (!string.IsNullOrEmpty(order.SignType))
{
signBuilder.Append($"&sign_type={order.SignType}");
}
if (!string.IsNullOrEmpty(order.SPBillCreateIP))
{
signBuilder.Append($"&spbill_create_ip={order.SPBillCreateIP}");
}
if (!string.IsNullOrEmpty(order.TimeExpire))
{
signBuilder.Append($"&time_expire={order.TimeExpire}");
}
if (!string.IsNullOrEmpty(order.TimeStart))
{
signBuilder.Append($"&time_start={order.TimeStart}");
}
if (!string.IsNullOrEmpty(order.TotalFee))
{
signBuilder.Append($"&total_fee={order.TotalFee}");
}
if (!string.IsNullOrEmpty(order.TradeType))
{
signBuilder.Append($"&trade_type={order.TradeType}");
}
signBuilder.Append($"&key={_options.WxMchKey}");
return(signBuilder.ToString().GetHashUTF8().ToUpperInvariant());
}
}
/// <summary>
/// Weixin refund
/// </summary>
/// <param name="device_info1">设备号 否 终端设备号</param>
/// <param name="out_refund_no1">
/// 商户退款单号 out_refund_no 是 String(64) 1217752501201407033233368018
/// 商户系统内部的退款单号，商户系统内部唯一，只能是数字、大小写字母_-|*@ ，同一退款单号多次请求只退一笔。
/// </param>
/// <param name="out_trade_no1">
/// 商户订单号 out_trade_no String(32) 1217752501201407033233368018
/// 商户系统内部订单号，要求32个字符内，只能是数字、大小写字母_-|*@ ，且在同一个商户号下唯一。
/// </param>
/// <param name="refund_account1">
/// 退款资金来源 refund_account 否 String(30) REFUND_SOURCE_RECHARGE_FUNDS
/// 仅针对老资金流商户使用
/// REFUND_SOURCE_UNSETTLED_FUNDS---未结算资金退款（默认使用未结算资金退款）
/// REFUND_SOURCE_RECHARGE_FUNDS---可用余额退款
/// </param>
/// <param name="refund_desc1">
/// 退款原因 refund_desc 否 String(80) 商品已售完
/// 若商户传入，会在下发给用户的退款消息中体现退款原因
/// 注意：若订单退款金额≤1元，且属于部分退款，则不会在退款消息中体现退款原因
/// </param>
/// <param name="refund_fee1">退款金额 refund_fee 是 Int 100 退款总金额，订单总金额，单位为分，只能为整数，详见支付金额</param>
/// <param name="refund_fee_type1">货币种类 refund_fee_type 否 String(8) CNY 货币类型，符合ISO 4217标准的三位字母代码，默认人民币：CNY，其他值列表详见货币类型</param>
/// <param name="total_fee1">订单金额 total_fee 是 Int 100 订单总金额，单位为分，只能为整数，详见支付金额</param>
/// <param name="transaction_id1">微信订单号 transaction_id 二选一 String(32) 1217752501201407033233368018 微信生成的订单号，在支付通知中有返回</param>
/// <returns>微信退款单号</returns>
public async Task <string> Refund(string out_refund_no1, string out_trade_no1, string total_fee1, string transaction_id1, string refund_fee1, string refund_account1 = "", string refund_desc1 = "", string refund_fee_type1 = "CNY", string device_info1 = "")
{
string nonce_str1 = out_refund_no1.GetHashUTF8(); // 随机字符串，不长于32位
var hash = BuildSignString(_options.WxAppId, device_info1, _options.WxMchId, nonce_str1, _options.WxRefundNotifyUrl, out_refund_no1, out_trade_no1, refund_account1, refund_desc1, refund_fee1, refund_fee_type1, "MD5", total_fee1, transaction_id1);
var requestXml = BuildRequestXml(_options.WxAppId, device_info1, _options.WxMchId, nonce_str1, _options.WxRefundNotifyUrl, out_refund_no1, out_trade_no1, refund_account1, refund_desc1, refund_fee1, refund_fee_type1, hash, "MD5", total_fee1, transaction_id1);
if (_options.WxIsDebug)
{
_logger.EnqueueMessage($"WxRefundXml: {requestXml}");
}
try
{
HttpContent content = new ByteArrayContent(Encoding.UTF8.GetBytes(requestXml));
var res = await _client.PostAsync("https://api.mch.weixin.qq.com/secapi/pay/refund", content);
var xml = await res.Content.ReadAsStringAsync();
if (_options.WxIsDebug)
{
_logger.EnqueueMessage($"WxRefundRes: {xml}");
}
// no sign validation note: must be validated before using
bool isReturnSuccess = xml.IndexOf("<return_code><![CDATA[SUCCESS]]></return_code>", StringComparison.Ordinal) != -1;
//bool isReturnSuccess = xml.StartsWith("<xml><return_code><![CDATA[SUCCESS]]></return_code>", StringComparison.Ordinal);
if (!isReturnSuccess)
{
return(string.Empty);
}
bool isResultSuccess = xml.IndexOf("<result_code><![CDATA[SUCCESS]]></result_code>", StringComparison.Ordinal) != -1;
return(isResultSuccess ? RefundIdPattern.Match(xml).Groups[1].Value : string.Empty /*error*/);
}
catch (Exception ex)
{
_logger.EnqueueMessage($"{nameof(WeixinPay)}.{nameof(Refund)} error. Message: {ex.Message} InnerMessage: {ex.InnerException?.Message} StackTrace: {ex.StackTrace}");
}
return(string.Empty);
string BuildSignString(string appid, string device_info, string mch_id, string nonce_str, string notify_url, string out_refund_no, string out_trade_no, string refund_account, string refund_desc, string refund_fee, string refund_fee_type, string sign_type, string total_fee, string transaction_id)
{
StringBuilder signBuilder = new StringBuilder();
signBuilder.Append($"appid={appid}");
if (!string.IsNullOrEmpty(device_info))
{
signBuilder.Append($"&device_info={device_info}");
}
if (!string.IsNullOrEmpty(mch_id))
{
signBuilder.Append($"&mch_id={mch_id}");
}
if (!string.IsNullOrEmpty(nonce_str))
{
signBuilder.Append($"&nonce_str={nonce_str}");
}
if (!string.IsNullOrEmpty(notify_url))
{
signBuilder.Append($"¬ify_url={notify_url}");
}
if (!string.IsNullOrEmpty(out_refund_no))
{
signBuilder.Append($"&out_refund_no={out_refund_no}");
}
if (!string.IsNullOrEmpty(out_trade_no))
{
signBuilder.Append($"&out_trade_no={out_trade_no}");
}
if (!string.IsNullOrEmpty(refund_account))
{
signBuilder.Append($"&refund_account={refund_account}");
}
if (!string.IsNullOrEmpty(refund_desc))
{
signBuilder.Append($"&refund_desc={refund_desc}");
}
if (!string.IsNullOrEmpty(refund_fee))
{
signBuilder.Append($"&refund_fee={refund_fee}");
}
if (!string.IsNullOrEmpty(refund_fee_type))
{
signBuilder.Append($"&refund_fee_type={refund_fee_type}");
}
if (!string.IsNullOrEmpty(sign_type))
{
signBuilder.Append($"&sign_type={sign_type}");
}
if (!string.IsNullOrEmpty(total_fee))
{
signBuilder.Append($"&total_fee={total_fee}");
}
if (!string.IsNullOrEmpty(transaction_id))
{
signBuilder.Append($"&transaction_id={transaction_id}");
}
signBuilder.Append($"&key={_options.WxMchKey}");
return(signBuilder.ToString().GetHashUTF8().ToUpperInvariant());
}
string BuildRequestXml(string appid, string device_info, string mch_id, string nonce_str, string notify_url, string out_refund_no, string out_trade_no, string refund_account, string refund_desc, string refund_fee, string refund_fee_type, string sign, string sign_type, string total_fee, string transaction_id)
{
StringBuilder xmlBuilder = new StringBuilder("<xml>");
xmlBuilder.Append($"<appid>{appid}</appid>");
if (!string.IsNullOrEmpty(device_info))
{
xmlBuilder.Append($"<device_info>{device_info}</device_info>");
}
if (!string.IsNullOrEmpty(mch_id))
{
xmlBuilder.Append($"<mch_id>{mch_id}</mch_id>");
}
if (!string.IsNullOrEmpty(nonce_str))
{
xmlBuilder.Append($"<nonce_str>{nonce_str}</nonce_str>");
}
if (!string.IsNullOrEmpty(notify_url))
{
xmlBuilder.Append($"<notify_url>{notify_url}</notify_url>");
}
if (!string.IsNullOrEmpty(out_refund_no))
{
xmlBuilder.Append($"<out_refund_no>{out_refund_no}</out_refund_no>");
}
if (!string.IsNullOrEmpty(out_trade_no))
{
xmlBuilder.Append($"<out_trade_no>{out_trade_no}</out_trade_no>");
}
if (!string.IsNullOrEmpty(refund_account))
{
xmlBuilder.Append($"<refund_account>{refund_account}</refund_account>");
}
if (!string.IsNullOrEmpty(refund_desc))
{
xmlBuilder.Append($"<refund_desc>{refund_desc}</refund_desc>");
}
if (!string.IsNullOrEmpty(refund_fee))
{
xmlBuilder.Append($"<refund_fee>{refund_fee}</refund_fee>");
}
if (!string.IsNullOrEmpty(refund_fee_type))
{
xmlBuilder.Append($"<refund_fee_type>{refund_fee_type}</refund_fee_type>");
}
if (!string.IsNullOrEmpty(sign))
{
xmlBuilder.Append($"<sign>{sign}</sign>");
}
if (!string.IsNullOrEmpty(sign_type))
{
xmlBuilder.Append($"<sign_type>{sign_type}</sign_type>");
}
if (!string.IsNullOrEmpty(total_fee))
{
xmlBuilder.Append($"<total_fee>{total_fee}</total_fee>");
}
if (!string.IsNullOrEmpty(transaction_id))
{
xmlBuilder.Append($"<transaction_id>{transaction_id}</transaction_id>");
}
return(xmlBuilder.Append("</xml>").ToString());
}
}