/// <summary>
/// 获取返回时的签名验证结果
/// </summary>
/// <param name="inputPara">通知返回参数数组</param>
/// <param name="sign">对比的签名结果</param>
/// <returns>签名验证结果</returns>
private bool GetSignVeryfy(SortedDictionary <string, string> inputPara, string sign,
IGlobalAlipaySettings alipaySettings)
{
//过滤空值、sign与sign_type参数
var sPara = inputPara.FilterPara();
//获取待签名字符串
var preSignStr = sPara.CreateLinkString();
//获得签名验证结果
var isSgin = false;
if (string.IsNullOrEmpty(sign))
{
return(false);
}
switch (alipaySettings.SignType)
{
case "MD5":
isSgin = Extension.Extension.Verify(preSignStr, sign, alipaySettings.Key, alipaySettings.CharSet);
break;
default:
break;
}
return(isSgin);
}
/// <summary>
/// 验证消息是否是支付宝发出的消息
/// </summary>
/// <param name="inputPara">通知返回参数数组</param>
/// <param name="sign">支付宝生成的签名结果</param>
/// <returns>验证结果</returns>
public bool VerifyReturn(SortedDictionary <string, string> inputPara, string sign,
IGlobalAlipaySettings alipaySettings)
{
//获取返回时的签名验证结果
var isSign = GetSignVeryfy(inputPara, sign, alipaySettings);
return(isSign);
}
/// <summary>
/// 获取是否是支付宝服务器发来的请求的验证结果
/// </summary>
/// <param name="notifyId">通知验证ID</param>
/// <returns>验证结果</returns>
private string GetResponseTxt(string notifyId, IGlobalAlipaySettings alipaySettings)
{
var veryfyUrl = $"{Https_veryfy_url}partner={alipaySettings.Partner}¬ify_id={notifyId}";
//获取远程服务器ATN结果，验证是否是支付宝服务器发来的请求
var responseTxt = Get_Http(veryfyUrl, 120000);
return(responseTxt);
}
/// <summary>
/// 国际支付宝支付配置
/// </summary>
/// <param name="logAction"></param>
/// <param name="iocManager"></param>
/// <param name="config"></param>
/// <param name="settingManager"></param>
/// <returns></returns>
private static async Task <IGlobalAlipaySettings> GlobalAlipayConfig(Action <string, string> logAction, IIocManager iocManager, IConfigurationRoot config, ISettingManager settingManager)
{
#region 支付宝支付
IGlobalAlipaySettings alipaySettings = null;
if (Convert.ToBoolean(await settingManager.GetSettingValueAsync(AppSettings.GlobalAliPayManagement.IsActive)))
{
alipaySettings = new GlobalAlipaySettings
{
Key = await settingManager.GetSettingValueAsync(AppSettings.GlobalAliPayManagement.Key),
Partner = await settingManager.GetSettingValueAsync(AppSettings.GlobalAliPayManagement.Partner),
Gatewayurl = await settingManager.GetSettingValueAsync(AppSettings.GlobalAliPayManagement.Gatewayurl),
Notify = await settingManager.GetSettingValueAsync(AppSettings.GlobalAliPayManagement.Notify),
ReturnUrl = await settingManager.GetSettingValueAsync(AppSettings.GlobalAliPayManagement.ReturnUrl),
Currency = await settingManager.GetSettingValueAsync(AppSettings.GlobalAliPayManagement.Currency),
};
var splitFundSettingsString =
await settingManager.GetSettingValueAsync(AppSettings.GlobalAliPayManagement.SplitFundSettings);
if (!splitFundSettingsString.IsNullOrWhiteSpace())
{
alipaySettings.SplitFundInfo = JsonConvert.DeserializeObject <List <SplitFundSettingInfoDto> >(splitFundSettingsString);
}
}
else if (!config["GlobalAlipay:IsEnabled"].IsNullOrWhiteSpace() && Convert.ToBoolean(config["Alipay:IsEnabled"]))
{
alipaySettings = new GlobalAlipaySettings
{
Key = config["GlobalAlipay:Key"],
Partner = config["GlobalAlipay:Partner"],
Gatewayurl = config["GlobalAlipay:Gatewayurl"],
Notify = config["GlobalAlipay:Notify"],
ReturnUrl = config["GlobalAlipay:ReturnUrl"],
Currency = config["GlobalAlipay:Currency"],
};
var splitFundSettingsString = config["GlobalAlipay:SplitFundInfo"];
if (!splitFundSettingsString.IsNullOrWhiteSpace())
{
alipaySettings.SplitFundInfo = JsonConvert.DeserializeObject <List <SplitFundSettingInfoDto> >(splitFundSettingsString);
}
}
if (alipaySettings != null)
{
GlobalAlipayBuilder.Create()
.WithLoggerAction(logAction)
.RegisterGetPayConfigFunc(() => alipaySettings).Build();
//注册支付宝支付API
if (!iocManager.IsRegistered <IGlobalAlipayAppService>())
{
iocManager.Register <IGlobalAlipayAppService, GlobalAlipayAppService>(DependencyLifeStyle.Transient);
}
}
#endregion
return(alipaySettings);
}
/// <summary>
/// 生成要请求给支付宝的参数数组
/// </summary>
/// <param name="sParaTemp">请求前的参数数组</param>
/// <param name="alipaySettings"></param>
/// <returns>要请求的参数数组字符串</returns>
public static string BuildRequestParaToString(this SortedDictionary <string, string> sParaTemp,
IGlobalAlipaySettings alipaySettings)
{
//待签名请求参数数组
var sPara = BuildRequestPara(sParaTemp, alipaySettings);
//把参数组中所有元素，按照“参数=参数值”的模式用“&”字符拼接成字符串，并对参数值做urlencode
var strRequestData = CreateLinkStringUrlencode(sPara);
return(strRequestData);
}
/// <summary>
/// 生成要请求给支付宝的参数数组
/// </summary>
/// <param name="sParaTemp">请求前的参数数组</param>
/// <param name="alipaySettings"></param>
/// <returns>要请求的参数数组</returns>
public static Dictionary <string, string> BuildRequestPara(this SortedDictionary <string, string> sParaTemp,
IGlobalAlipaySettings alipaySettings)
{
//待签名请求参数数组
//签名结果
var mysign = "";
//过滤签名参数数组
var sPara = FilterPara(sParaTemp);
//获得签名结果
mysign = BuildRequestMysign(sPara, alipaySettings);
//签名结果与签名方式加入请求提交参数组中
sPara.Add("sign", mysign);
sPara.Add("sign_type", alipaySettings.SignType);
return(sPara);
}
/// <summary>
/// 生成请求时的签名
/// </summary>
/// <param name="sPara">请求给支付宝的参数数组</param>
/// <param name="alipaySettings"></param>
/// <returns>签名结果</returns>
private static string BuildRequestMysign(this Dictionary <string, string> sPara,
IGlobalAlipaySettings alipaySettings)
{
//把数组所有元素，按照“参数=参数值”的模式用“&”字符拼接成字符串
var prestr = sPara.CreateLinkString();
//把最终的字符串签名，获得签名结果
var mysign = "";
switch (alipaySettings.SignType)
{
case "MD5":
mysign = Sign(prestr, alipaySettings.Key, alipaySettings.CharSet);
break;
default:
mysign = "";
break;
}
return(mysign);
}
/// <summary>
/// 验证消息是否是支付宝发出的合法消息
/// </summary>
/// <param name="inputPara">通知返回参数数组</param>
/// <param name="notifyId">通知验证ID</param>
/// <param name="sign">支付宝生成的签名结果</param>
/// <param name="alipaySettings"></param>
/// <returns>验证结果</returns>
public bool Verify(SortedDictionary <string, string> inputPara, string notifyId, string sign,
IGlobalAlipaySettings alipaySettings)
{
//获取返回时的签名验证结果
var isSign = GetSignVeryfy(inputPara, sign, alipaySettings);
//获取是否是支付宝服务器发来的请求的验证结果
var responseTxt = "false";
if (!string.IsNullOrEmpty(notifyId))
{
responseTxt = GetResponseTxt(notifyId, alipaySettings);
}
//写日志记录（若要调试，请取消下面两行注释）
var sWord = "responseTxt=" + responseTxt + "\n isSign=" + isSign + "\n 返回的参数：" + GetPreSignStr(inputPara) +
"\n ";
GlobalAlipayAppService.LoggerAction("Debug", sWord);
//判断responsetTxt是否为true，isSign是否为true
//responsetTxt的结果不是true，与服务器设置问题、合作身份者ID、notify_id一分钟失效有关
//isSign不是true，与安全校验码、请求时的参数格式（如：带自定义参数等）、编码格式有关
return(responseTxt == "true" && isSign);
}
