public async Task <IActionResult> Proxy(RequestObj requestObj, [FromServices] ILogger <RootController> logger)
{
if (!Settings.IpWhite.IsNullOrWhiteSpace() && Settings.IpWhite != "*" &&
!Settings.IpWhiteList.Value.Contains(HttpContext.Connection
.RemoteIpAddress.ToString()))
{
return(BadRequest("invalid ip address."));
}
if (!Settings.AllowTargets.IsNullOrWhiteSpace() && Settings.AllowTargets != "*")
{
var uri = new Uri(requestObj.TargetUrl.Trim());
if (!Settings.AllowTargetList.Value.Contains($"{uri.Scheme}://{uri.Authority}",
StringComparer.OrdinalIgnoreCase))
{
return(BadRequest("invalid target."));
}
}
try
{
var decodedStr = SecretHelper.Decrypt(requestObj.Body, Settings.LocalPrivateKey, Encoding.GetEncoding(requestObj.Encode));
if (!SecretHelper.Verify(decodedStr, requestObj.Signature, Settings.RemotePublicKey, Encoding.GetEncoding(requestObj.Encode)))
{
return(BadRequest("signature error."));
}
var method = requestObj.Method ?? RestSharp.Method.POST;
if (decodedStr == "empty")
{
decodedStr = "";
}
var res = await HttpHelper.DoRequest(method, requestObj.TargetUrl, decodedStr, requestObj.ContentType,
requestObj.QueryStrings, requestObj.Headers, requestObj.Cookies,
requestObj.Timeout ?? 60, proxy : null, encoding : Encoding.GetEncoding(requestObj.Encode));
if (!res.IsSuccessful)
{
logger.LogError(
$"request {requestObj.TargetUrl} response error, method: ${method}, http code:{res.StatusCode}, detail: {res.Content}");
return(BadRequest(res.Content));
}
await using var ms = new MemoryStream(res.RawBytes);
string response;
if (res.RawBytes.Length == 0)
{
response = "empty";
}
else
{
response = await ms.ReadToStringAsync(Encoding.GetEncoding(requestObj.Encode));
}
var resBody = SecretHelper.Encrypt(response, Settings.RemotePublicKey, Encoding.GetEncoding(requestObj.Encode));
var resSignature = SecretHelper.Sign(response, Settings.LocalPrivateKey, Encoding.GetEncoding(requestObj.Encode));
return(new JsonResult(new ResponseObj
{
Body = resBody,
Signature = resSignature
}));
}
catch (Exception ex)
{
return(BadRequest(ex.Message));
}
}