void IMessageSerializer.Serialize <T>(Stream stream, SendContext <T> context)
{
context.ContentType = EncryptedContentType;
var envelope = new JsonMessageEnvelope(context, context.Message, TypeMetadataCache <T> .MessageTypeNames);
using Stream cryptoStream = _streamProvider.GetEncryptStream(stream, context);
using var jsonWriter = new BsonDataWriter(cryptoStream);
_serializer.Serialize(jsonWriter, envelope, typeof(MessageEnvelope));
jsonWriter.Flush();
}
/// <summary>
/// Returns a stream with the encryption bits in place to ensure proper message encryption
/// </summary>
/// <param name="provider">The crypto stream provider</param>
/// <param name="stream">The original stream to which the encrypted message content is written</param>
/// <param name="context">The second context of the message</param>
/// <returns>A stream for serializing the message which will be encrypted</returns>
public static Stream GetEncryptStream(this ICryptoStreamProvider provider, Stream stream, TransformContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
var keyId = context.Headers.TryGetHeader(EncryptedMessageSerializer.EncryptionKeyHeader, out var keyIdObj)
? keyIdObj.ToString()
: default;
return(provider.GetEncryptStream(stream, keyId, CryptoStreamMode.Write));
}
public async Task <Uri> Put(Stream stream, TimeSpan?timeToLive = null, CancellationToken cancellationToken = new CancellationToken())
{
string keyId = null;
using (Stream cryptoStream = _streamProvider.GetEncryptStream(stream, keyId, CryptoStreamMode.Read))
{
var address = await _repository.Put(cryptoStream, timeToLive, cancellationToken);
var addressBuilder = new UriBuilder(address);
NameValueCollection parameters = new NameValueCollection();
if (!string.IsNullOrWhiteSpace(addressBuilder.Query))
{
var query = addressBuilder.Query;
if (query.Contains("?"))
{
query = query.Substring(query.IndexOf('?') + 1);
}
foreach (string parameter in query.Split('&'))
{
if (string.IsNullOrWhiteSpace(parameter))
{
continue;
}
string[] pair = parameter.Split('=');
parameters.Add(pair[0], pair.Length == 2 ? pair[1] : "");
}
}
parameters["keyId"] = "";
addressBuilder.Query = parameters.ToString();
return(addressBuilder.Uri);
}
}
