/// <summary>
/// 将返回的结果中的ciphertext进行AEAD_AES_256_GCM解反序列化为实体
/// 签名规则见微信官方文档 https://pay.weixin.qq.com/wiki/doc/apiv3/apis/chapter3_1_5.shtml
/// </summary>
/// <param name="aes_key">这里需要传入apiv3秘钥进行AEAD_AES_256_GCM解密 可空</param>
/// <param name="nonce">加密的随机串 可空</param>
/// <param name="associated_data">附加数据包 可空</param>
/// <returns></returns>
// TODO: 本方法持续测试
public async Task <T> AesGcmDecryptGetObjectAsync <T>(string aes_key = null, string nonce = null, string associated_data = null) where T : ReturnJsonBase, new()
{
aes_key ??= _tenpayV3Setting.TenPayV3_APIv3Key;
nonce ??= NotifyRequest.resource.nonce;
associated_data ??= NotifyRequest.resource.associated_data;
var decrypted_string = SecurityHelper.AesGcmDecryptCiphertext(aes_key, nonce, associated_data, NotifyRequest.resource.ciphertext);
T result = decrypted_string.GetObject <T>();
//验证请求签名
var wechatpayTimestamp = _httpContext.Request.Headers?["Wechatpay-Timestamp"];
var wechatpayNonce = _httpContext.Request.Headers?["Wechatpay-Nonce"];
var wechatpaySignature = _httpContext.Request.Headers?["Wechatpay-Signature"];
var wechatpaySerial = _httpContext.Request.Headers?["Wechatpay-Serial"];
result.VerifySignSuccess = await TenPaySignHelper.VerifyTenpaySign(wechatpayTimestamp, wechatpayNonce, wechatpaySignature, Body, wechatpaySerial, this._tenpayV3Setting);
result.ResultCode = new TenPayApiResultCode($"{_httpContext.Response.StatusCode} / {_httpContext.Request.Method}", "", "", "", result.VerifySignSuccess == true);
return(result);
}
/// <summary>
/// 请求参数，获取结果
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="url"></param>
/// <param name="data">如果为 GET 请求，此参数可为 null</param>
/// <returns></returns>
public async Task <T> RequestAsync <T>(string url, object data, int timeOut = Config.TIME_OUT, ApiRequestMethod requestMethod = ApiRequestMethod.POST, bool checkSign = true, Func <T> createDefaultInstance = null)
where T : ReturnJsonBase/*, new()*/
{
T result = null;
try
{
HttpResponseMessage responseMessage = await GetHttpResponseMessageAsync(url, data, timeOut, requestMethod);
//获取响应结果
string content = await responseMessage.Content.ReadAsStringAsync();//TODO:如果不正确也要返回详情
//检查响应代码
TenPayApiResultCode resutlCode = TenPayApiResultCode.TryGetCode(responseMessage.StatusCode, content);
if (resutlCode.Success)
{
//TODO:待测试
//验证微信签名
//result.Signed = VerifyTenpaySign(responseMessage.Headers, content);
var wechatpayTimestamp = responseMessage.Headers.GetValues("Wechatpay-Timestamp").First();
var wechatpayNonce = responseMessage.Headers.GetValues("Wechatpay-Nonce").First();
var wechatpaySignatureBase64 = responseMessage.Headers.GetValues("Wechatpay-Signature").First();//后续需要base64解码
var wechatpaySerial = responseMessage.Headers.GetValues("Wechatpay-Serial").First();
result = content.GetObject <T>();
if (checkSign)
{
try
{
var pubKey = await TenPayV3InfoCollection.GetAPIv3PublicKeyAsync(this._tenpayV3Setting, wechatpaySerial);
result.VerifySignSuccess = TenPaySignHelper.VerifyTenpaySign(wechatpayTimestamp, wechatpayNonce, wechatpaySignatureBase64, content, pubKey);
}
catch (Exception ex)
{
throw new TenpayApiRequestException("RequestAsync 签名验证失败：" + ex.Message, ex);
}
}
}
else
{
result = createDefaultInstance?.Invoke() ?? GetInstance <T>(true);
resutlCode.Additional = content;
}
//T result = resutlCode.Success ? (await responseMessage.Content.ReadAsStringAsync()).GetObject<T>() : new T();
result.ResultCode = resutlCode;
return(result);
}
catch (Exception ex)
{
SenparcTrace.BaseExceptionLog(ex);
result = createDefaultInstance?.Invoke() ?? GetInstance <T>(false);
if (result != null)
{
result.ResultCode = new() { ErrorMessage = ex.Message };
}
return(result);
}
}