public void VerifyEncryption(GpgResult result)
{
if (result.HasStatusCodes(GpgStatusCode.FAILURE, GpgStatusCode.INV_RECP, GpgStatusCode.KEYEXPIRED))
{
var failedrcps = result.StatusMessages.Where(m => m.StatusCode == GpgStatusCode.INV_RECP).Select(m => m.Message.Substring(m.Message.IndexOf(" ", StringComparison.Ordinal)));
throw new GpgError($"Invalid/unknown recipient(s): {string.Join(", ", failedrcps)}\n" +
"The key(s) belonging to this recipient may have expired.");
}
if (result.HasStatusCodes(GpgStatusCode.FAILURE, GpgStatusCode.INV_RECP))
{
var failedrcps = result.StatusMessages.Where(m => m.StatusCode == GpgStatusCode.INV_RECP).Select(m => m.Message.Substring(m.Message.IndexOf(" ", StringComparison.Ordinal)));
throw new GpgError($"Invalid/unknown recipient(s): {string.Join(", ", failedrcps)}\n" +
"Make sure that you have imported and trusted the keys belonging to those recipients.");
}
if (result.HasStatusCodes(GpgStatusCode.FAILURE))
{
result.GenerateError();
}
if (result.HasStatusCodes(GpgStatusCode.END_ENCRYPTION))
{
return;
}
result.EnsureNonZeroExitCode();
}
public void VerifyDecryption(GpgResult result)
{
// Handle known failure conditions first.
if (result.HasStatusCodes(GpgStatusCode.FAILURE, GpgStatusCode.NODATA))
{
throw new GpgError("The file to be decrypted does not look like a valid GPG file.");
}
if (result.HasStatusCodes(GpgStatusCode.DECRYPTION_FAILED, GpgStatusCode.NO_SECKEY))
{
var keyIds = result.StatusMessages.Where(m => m.StatusCode == GpgStatusCode.NO_SECKEY);
throw new GpgError("None of your private keys appear to be able to decrypt this file.\n" +
$"The file was encrypted for the following (sub)key(s): {string.Join(", ", keyIds.Select(m => m.Message))}");
}
if (result.HasStatusCodes(GpgStatusCode.DECRYPTION_FAILED) && result.StderrMessages.Any(m => m.Contains("Operation cancelled")))
{
throw new GpgError("Operation cancelled.");
}
// Next, handle generic failure conditions.
if (result.HasStatusCodes(GpgStatusCode.DECRYPTION_FAILED))
{
throw new GpgError("GPG Couldn't decrypt this file. The following information may contain more details about the error that occurred:\n\n" +
$"{string.Join("\n", result.StderrMessages)}");
}
if (result.HasStatusCodes(GpgStatusCode.FAILURE))
{
result.GenerateError();
}
// Now look for an indication of a successful decryption.
if (result.HasStatusCodes(GpgStatusCode.DECRYPTION_OKAY, GpgStatusCode.END_DECRYPTION))
{
return;
}
// As a last resort, consider a non-zero exit code to be a failure.
result.EnsureNonZeroExitCode();
}
