async Task ArcSignAsync(FormatOptions options, MimeMessage message, IList <string> headers, bool doAsync, CancellationToken cancellationToken)
{
ArcVerifier.GetArcHeaderSets(message, true, out ArcHeaderSet[] sets, out int count, out var errors);
AuthenticationResults authres;
int instance = count + 1;
string cv;
// do not sign if there is already a failed/invalid ARC-Seal.
if (count > 0 && (errors & ArcValidationErrors.InvalidArcSealChainValidationValue) != 0)
{
return;
}
options = options.Clone();
options.NewLineFormat = NewLineFormat.Dos;
options.EnsureNewLine = true;
if (doAsync)
{
authres = await GenerateArcAuthenticationResultsAsync(options, message, cancellationToken).ConfigureAwait(false);
}
else
{
authres = GenerateArcAuthenticationResults(options, message, cancellationToken);
}
if (authres == null)
{
return;
}
authres.Instance = instance;
var aar = new Header(HeaderId.ArcAuthenticationResults, authres.ToString());
cv = "none";
if (count > 0)
{
cv = "pass";
foreach (var method in authres.Results)
{
if (method.Method.Equals("arc", StringComparison.OrdinalIgnoreCase))
{
cv = method.Result;
break;
}
}
}
var t = GetTimestamp();
var ams = GenerateArcMessageSignature(options, message, instance, t, headers);
var seal = GenerateArcSeal(options, instance, cv, t, sets, count, aar, ams);
message.Headers.Insert(0, aar);
message.Headers.Insert(0, ams);
message.Headers.Insert(0, seal);
}
async Task ArcSignAsync(FormatOptions options, MimeMessage message, IList <string> headers, bool doAsync, CancellationToken cancellationToken)
{
ArcVerifier.GetArcHeaderSets(message, true, out ArcHeaderSet[] sets, out int count);
int instance = count + 1;
Header aar;
if (doAsync)
{
aar = await GenerateArcAuthenticationResultsAsync(options, message, instance, cancellationToken).ConfigureAwait(false);
}
else
{
aar = GenerateArcAuthenticationResults(options, message, instance, cancellationToken);
}
var t = DateTime.UtcNow - DateUtils.UnixEpoch;
var ams = GenerateArcMessageSignature(options, message, instance, t, headers);
var seal = GenerateArcSeal(options, instance, t, sets, count, aar, ams);
message.Headers.Insert(0, aar);
message.Headers.Insert(0, ams);
message.Headers.Insert(0, seal);
}