Пример #1
0
        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();
        }
Пример #2
0
        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();
        }