public async Task <ChannelVerificationResult> ValidateChannel(PackageGenerationInput input)
{
var result = new ChannelVerificationResult();
var connectionIdentifierHash = _contextAccessor.HttpContext.GetRemoteIPAddress().ToString().ToSha256();
//Run validation depending on the Entry Channel (Web, Application)
switch (input.EntryChannel)
{
case EntryChannelEnum.Web:
try
{
result.ChannelVerificationSucceeded =
await HcaptchaValidationHelper.CheckHcaptchaResponseIsValid(input.Token,
_configuration.GetSection("HcaptchaSecret").Value);
}
catch (InvalidSignatureException ise)
{
result.ChannelVerificationErrorMessage = ise.Message;
}
break;
case EntryChannelEnum.Application:
try
{
result.ChannelVerificationSucceeded =
SafetyNetValidationHelper.CheckSafetyNetResponseIsValid(input.Token,
_distributedCache, connectionIdentifierHash);
}
catch (InvalidSignatureException ise)
{
result.ChannelVerificationErrorMessage = ise.Message;
}
break;
}
return(result);
}
public async Task <PackageGenerationResult> GeneratePackageAsync(PackageGenerationInput input)
{
var packageDetails = await _packageGenerationService.ProcessForPackageAsync(input.PackageName);
var result = new PackageGenerationResult();
switch (packageDetails.Status)
{
case PackageCreationStatus.NotCreated:
result.ServeStatus = PackageServeStatus.FileDoesNotExist;
break;
case PackageCreationStatus.Success:
case PackageCreationStatus.AlreadyExists:
{
var downloadKey = $"{Guid.NewGuid():N}";
var connectionIdentifierHash =
_contextAccessor.HttpContext.GetRemoteIPAddress().ToString().ToSha256();
var downloadContents = new DownloadContentsModel
{
FilePath = packageDetails.FileLocation,
ConnectionIdentifierHash = connectionIdentifierHash
};
//Result is stored for 1 hour, but once accessed it gets deleted
await _distributedCache.SetTimedObjectAsync(downloadKey, downloadContents, 1);
//Finalize setting up the result object
result.ServeStatus = PackageServeStatus.Ready;
result.DownloadUrl = _linkGenerator.GetPathByAction("GetTool",
"Download", new { guid = downloadKey });
result.FileName = packageDetails.ApplicationName;
break;
}
}
return(result);
}
public bool ParametersAreValid(PackageGenerationInput input)
{
return(!string.IsNullOrWhiteSpace(input.PackageName) && !string.IsNullOrWhiteSpace(input.Token));
}