public static void SendJsonCapsula(Context context, JsonCapsula toSend, long recepientId, long myUserId)
{
if (toSend == null)
{
return;
}
var recepient = context.Contacts
.Where(u => u.PublicId == recepientId)
.SingleOrDefault();
if (recepient == null)
{
throw new Exception($"User is not downloaded in local database.");
}
else if (recepient.Trusted != 1)
{
throw new Exception($"User {recepient.PublicId} ({recepient.UserName}) is not trusted.");
}
long?blobId = null;
if (myUserId == recepientId)
{
var blobMessage = new BlobMessages()
{
SenderId = myUserId,
PublicId = null,
DoDelete = 0,
Failed = 0
};
context.BlobMessages.Add(blobMessage);
context.SaveChanges();
blobId = blobMessage.Id;
PullMessageParser.ParseIJTypeMessage(context, toSend, myUserId, blobMessage.Id, myUserId);
context.SaveChanges();
}
context.ToSendMessages.Add(new ToSendMessages()
{
RecepientId = recepientId,
BlobMessagesId = blobId,
Blob = JsonEncoder.GetJsonEncoded(context, toSend, recepientId),
Priority = toSend.Message.GetPriority()
});
context.SaveChanges();
PushAction.Changed = true;
}
public int Pull()
{
int changes = 0;
ThrowExceptionIfNotConnected();
lock (mutex)
{
Log("Sending PULL command.");
BinaryEncoder.SendCommand(stream, ConnectionCommand.PULL);
#if (DEBUG)
Log("Sending ClientPullCapsula.");
#endif
ClientPullCapsula clientCapsula;
using (Context context = new Context(config))
{
clientCapsula = new ClientPullCapsula()
{
AesKeysUserIds = context.Contacts
.Where(u => u.ReceiveAesKey == null)
.Select(u => u.PublicId)
.ToArray()
};
}
TextEncoder.SendJson(stream, clientCapsula);
ServerPullCapsula capsula = TextEncoder.ReadJson <ServerPullCapsula>(stream);
#if (DEBUG)
Log("Received ServerPullCapsula.");
#endif
changes += capsula.AesKeysUserIds.Count;
changes += capsula.Messages.Count;
using (Context context = new Context(config))
{
#if (DEBUG)
Log("Receiving and saving AES keys.");
#endif
foreach (var id in capsula.AesKeysUserIds)
{
var user = new UContact(context.Contacts.Where(con => con.PublicId == id).SingleOrDefault());
try
{
user.ReceiveAesKey = RSAEncoder.DecryptAndVerify(BinaryEncoder.ReceiveBytes(stream), MyCertificate, X509Certificate2Utils.ImportFromPem(user.PublicCertificate));
}
catch (Exception ex)
{
Log($"Loading of Receive AESKey from {user.PublicId} has failed.");
logger.LogException(this, ex);
}
PushOperations.Update(context, user, UserId, UserId);
}
context.SaveChanges();
#if (DEBUG)
Log("Receiving and saving messages.");
#endif
foreach (PullMessage metaMessage in capsula.Messages)
{
BlobMessages metaBlob = new BlobMessages()
{
PublicId = metaMessage.PublicId,
SenderId = metaMessage.SenderId,
Failed = 0,
DoDelete = 0
};
context.BlobMessages.Add(metaBlob);
context.SaveChanges();
try
{
PullMessageParser.ParseEncryptedMessage(context, BinaryEncoder.ReceiveBytes(stream), metaBlob.SenderId, metaBlob.Id, UserId);
}
catch (Exception ex)
{
Log($"Loading of message {metaMessage.PublicId} has failed.");
metaBlob.Failed = 1;
logger.LogException(this, ex);
}
context.SaveChanges();
}
}
Log("Pull have been done.");
}
return(changes);
}
public void Pull()
{
Log("Sending PULL command.");
TextEncoder.SendCommand(stream, ConnectionCommand.PULL);
PullCapsula capsula = TextEncoder.ReadPullCapsula(stream);
#if (DEBUG)
Log("Received PullCapsula.");
#endif
using (Context context = new Context(config))
{
#if (DEBUG)
Log("Saving new users.");
#endif
foreach (PullUser user in capsula.Users)
{
context.Contacts.Add(new Contacts
{
PublicId = user.UserId,
PublicCertificate = user.PublicCertificate,
UserName = user.UserName
});
}
context.SaveChanges();
#if (DEBUG)
Log("Saving trusted contacts.");
#endif
context.Database.ExecuteSqlCommand("update CONTACTS set TRUSTED=0;");
context.SaveChanges();
foreach (var user in context.Contacts
.Where(users => capsula.TrustedUserIds.Contains(users.PublicId)))
{
user.Trusted = 1;
}
context.SaveChanges();
#if (DEBUG)
Log("Receiving and saving AES keys.");
#endif
foreach (var id in capsula.AesKeysUserIds)
{
var user = context.Contacts.Where(con => con.PublicId == id).SingleOrDefault();
user.ReceiveAesKey = RSAEncoder.Decrypt(BinaryEncoder.ReceiveBytes(stream), ClientCertificate);
}
context.SaveChanges();
#if (DEBUG)
Log("Receiving and saving messages.");
#endif
foreach (PullMessage metaMessage in capsula.Messages)
{
BlobMessages metaBlob = new BlobMessages()
{
PublicId = metaMessage.PublicId,
SenderId = metaMessage.SenderId,
Failed = 0,
DoDelete = 0
};
context.BlobMessages.Add(metaBlob);
context.SaveChanges();
try
{
PullMessageParser.ParseEncryptedMessage(context, BinaryEncoder.ReceiveBytes(stream), metaBlob.SenderId, metaBlob.Id, UserId);
}
catch (Exception ex)
{
Log($"Loading of message {metaMessage.PublicId} has failed.");
metaBlob.Failed = 1;
logger.LogException(this, ex);
}
context.SaveChanges();
}
}
Log("Pull have been done.");
}
private void Pull()
{
#if (DEBUG)
Log("Pulling started.");
Log("Receiving PushCapsula.");
#endif
PushCapsula capsula = TextEncoder.ReadJson <PushCapsula>(stream);
PushResponse response = new PushResponse()
{
MessageIds = new List <long>()
};
using (Context context = new Context(config))
{
#if (DEBUG)
Log($"Receiving and saving {capsula.PushMessages.Count} blobs.");
#endif
foreach (var pushMessage in capsula.PushMessages)
{
BlobMessages blobMessage = new BlobMessages()
{
Content = BinaryEncoder.ReceiveBytes(stream),
RecepientId = pushMessage.RecepientId,
SenderId = connectionInfo.UserId,
Priority = pushMessage.Priority
};
context.BlobMessages.Add(blobMessage);
context.SaveChanges();
if (pushMessage.RecepientId == connectionInfo.UserId)
{
response.MessageIds.Add(blobMessage.Id);
context.ClientsMessagesDownloaded.Add(new ClientsMessagesDownloaded()
{
BlobMessagesId = blobMessage.Id,
ClientsId = connectionInfo.ClientId
});
}
context.SaveChanges();
}
#if (DEBUG)
Log($"Deleting {capsula.MessageToDeleteIds.Count} blobs.");
#endif
foreach (var toDeleteId in capsula.MessageToDeleteIds)
{
var toDelete = context.BlobMessages
.Where(u => u.RecepientId == connectionInfo.UserId && u.Id == toDeleteId).SingleOrDefault();
if (toDelete != null)
{
context.BlobMessages.Remove(toDelete);
}
}
context.SaveChanges();
}
#if (DEBUG)
Log("Sending push response.");
#endif
TextEncoder.SendJson(stream, response);
#if (DEBUG)
Log("Pulling ended.");
#endif
}
