public Task <bool> TryStoreAuditTrail(ReadOnlySequence <byte> buffer, [NotNullWhen(false)] out AuditTrailError?error, CancellationToken cancellationToken = default)
{
Jwt?jwt = null;
try
{
if (Jwt.TryParse(buffer, _options.Policy, out jwt))
{
var record = new AuditTrailRecord(buffer.ToArray(), jwt, jwt.Payload !.TryGetClaim("iss", out var iss) ? iss.GetString() ! : "");
if (_sink.TryWrite(record))
{
error = null;
return(_trueTask);
}
error = AuditTrailError.TooManyRequest();
return(_falseTask);
}
else
{
var jwtError = jwt.Error !;
if ((jwtError.Status & TokenValidationStatus.KeyError) == TokenValidationStatus.KeyError)
{
error = AuditTrailError.InvalidKey();
return(_falseTask);
}
else
{
var description = jwt.Error !.Status switch
{
TokenValidationStatus.MalformedToken => "Malformed token.",
TokenValidationStatus.TokenReplayed => "Duplicated token.",
TokenValidationStatus.Expired => "Expired token.",
TokenValidationStatus.MissingEncryptionAlgorithm => "Missing encryption algorithm in the header.",
TokenValidationStatus.DecryptionFailed => "Unable to decrypt the token.",
TokenValidationStatus.NotYetValid => "The token is not yet valid.",
TokenValidationStatus.DecompressionFailed => "Unable to decompress the token.",
TokenValidationStatus.CriticalHeaderMissing => $"The critical header '{jwtError.ErrorHeader}' is missing.",
TokenValidationStatus.CriticalHeaderUnsupported => $"The critical header '{jwtError.ErrorHeader}' is not supported.",
TokenValidationStatus.InvalidClaim => $"The claim '{jwtError.ErrorClaim}' is invalid.",
TokenValidationStatus.MissingClaim => $"The claim '{jwtError.ErrorClaim}' is missing.",
TokenValidationStatus.InvalidHeader => $"The header '{jwtError.ErrorHeader}' is invalid.",
TokenValidationStatus.MissingHeader => $"The header '{jwtError.ErrorHeader}' is missing.",
_ => null
};
error = AuditTrailError.InvalidRequest(description);
return(_falseTask);
}
}
}
finally
{
jwt?.Dispose();
}
}
public override string Transform(IConsole console, string data)
{
console.Verbose($@"Decrypting the JWK...
Password derivation iteration count: {_iterationCount}
Password derivation salt size: {_saltSize} bits");
var decryptionKey = PasswordBasedJwk.FromPassphrase(_password, _iterationCount, _saltSize);
var policy = new TokenValidationPolicyBuilder().WithDecryptionKeys(decryptionKey).IgnoreNestedToken().AcceptUnsecureTokenByDefault().Build();
Jwt?jwt = null;
try
{
if (!Jwt.TryParse(data, policy, out jwt))
{
throw new InvalidOperationException($"Failed to decrypt the key.\n{jwt.Error!.Status}\n{jwt.Error!.Message}");
}
console.Verbose("JWK decrypted.");
return(jwt.Plaintext);
}
finally
{
jwt?.Dispose();
}
}