public async Task <IActionResult> Aka(string akaName)
{
if (string.IsNullOrWhiteSpace(akaName))
{
return(BadRequest());
}
var ip = HttpContext.Connection.RemoteIpAddress?.ToString() ?? "N/A";
if (string.IsNullOrWhiteSpace(UserAgent))
{
return(BadRequest());
}
var token = await _linkForwarderService.GetTokenByAkaNameAsync(akaName);
// can not redirect to default url because it will confuse user that the aka points to that default url.
if (token is null)
{
return(NotFound());
}
// Do not use RedirectToAction() because another 302 will happen.
return(await PerformTokenRedirection(token, ip));
}
public async Task <IActionResult> Aka(string akaName)
{
bool ValidateAkaName(string name)
{
return(!string.IsNullOrWhiteSpace(name) && Regex.IsMatch(name, @"^(?!-)([a-z0-9-]+)$"));
}
try
{
if (!ValidateAkaName(akaName))
{
return(BadRequest());
}
var ip = HttpContext.Connection.RemoteIpAddress.ToString();
var ua = Request.Headers["User-Agent"];
if (string.IsNullOrWhiteSpace(ua))
{
_logger.LogWarning($"'{ip}' requested akaName '{akaName}' without User Agent. Request is blocked.");
return(BadRequest());
}
var tokenResponse = await _linkForwarderService.GetTokenByAkaNameAsync(akaName);
if (tokenResponse.IsSuccess)
{
if (tokenResponse.Item == null)
{
// can not redirect to default url because it will confuse user that the aka points to that default url.
return(NotFound());
}
// Do not use RedirectToAction() because another 302 will happen.
return(await PerformTokenRedirection(tokenResponse.Item, ip, ua));
}
return(new StatusCodeResult(StatusCodes.Status500InternalServerError));
}
catch (Exception e)
{
_logger.LogError(e, e.Message);
return(new StatusCodeResult(StatusCodes.Status500InternalServerError));
}
}