public void onSend(string str)
{
if (str.Length < 1)
{
return;
}
// TODOSPIXI
/* // Send the message to the S2 nodes
* byte[] recipient_address = friend.wallet_address;
* byte[] encrypted_message = StreamProcessor.prepareSpixiMessage(SpixiMessageCode.chat, str, friend.pubkey);
* // CryptoManager.lib.encryptData(Encoding.UTF8.GetBytes(string_to_send), friend.pubkey);
*
* // Check the relay ip
* string relayip = friend.getRelayIP();
* if (relayip == null)
* {
* Logging.warn("No relay node to send message to!");
* return;
* }
* if (relayip.Equals(node_ip, StringComparison.Ordinal) == false)
* {
*
* node_ip = relayip;
* // Connect to the contact's S2 relay first
* NetworkClientManager.connectToStreamNode(relayip);
*
* // TODO: optimize this
* while (NetworkClientManager.isNodeConnected(relayip) == false)
* {
*
* }
* }
*
* Message message = new Message();
* message.recipientAddress = recipient_address;
* message.data = encrypted_message;
*
* StreamProcessor.sendMessage(message, node_ip);*/
SpixiMessage spixi_message = new SpixiMessage(SpixiMessageCode.chat, Encoding.UTF8.GetBytes(str));
StreamMessage message = new StreamMessage();
message.type = StreamMessageCode.data;
message.recipient = friend.walletAddress;
message.sender = Node.walletStorage.getPrimaryAddress();
message.transaction = new byte[1];
message.sigdata = new byte[1];
message.data = spixi_message.getBytes();
string relayip = friend.searchForRelay();
StreamProcessor.sendMessage(message, relayip);
// Finally, add the text bubble visually
DateTime dt = DateTime.Now;
FriendMessage msg = new FriendMessage(str, String.Format("{0:t}", dt), false);
friend.messages.Add(msg);
insertMessage(msg);
// Finally, clear the input field
webView.Eval("clearInput()");
}
public static bool sendFileData(Friend friend, string uid, ulong packet_number)
{
FileTransfer transfer = TransferManager.getOutgoingTransfer(uid);
if (transfer == null)
{
return(false);
}
using (MemoryStream m = new MemoryStream())
{
using (BinaryWriter writer = new BinaryWriter(m))
{
writer.Write(uid);
writer.Write(packet_number);
Logging.info("Sending file packet #{0}", packet_number);
byte[] data = transfer.getPacketData(packet_number);
// Write the data
if (data != null)
{
writer.Write(data.Length);
writer.Write(data);
}
else
{
writer.Write(0);
}
}
SpixiMessage spixi_message = new SpixiMessage(SpixiMessageCode.fileData, m.ToArray());
StreamMessage message = new StreamMessage();
message.type = StreamMessageCode.data;
message.recipient = friend.walletAddress;
message.sender = Node.walletStorage.getPrimaryAddress();
message.transaction = new byte[1];
message.sigdata = new byte[1];
message.data = spixi_message.getBytes();
StreamProcessor.sendMessage(friend, message, false, false, false);
}
if (friend.chat_page != null)
{
ulong totalPackets = transfer.fileSize / (ulong)transfer.packetSize;
ulong fp = 0;
bool complete = false;
if (totalPackets == packet_number)
{
fp = 100;
complete = true;
}
else
{
fp = packet_number * 100 / totalPackets;
}
friend.chat_page.updateFile(uid, fp.ToString(), complete);
}
return(true);
}
// Called when an encryption key is received from the S2 server, as per step 4 of the WhitePaper
/*private static void sendRsaEncryptedMessage(StreamMessage msg, string key, RemoteEndpoint endpoint)
* {
* // TODO TODO use transaction code for S2
* using (MemoryStream m = new MemoryStream())
* {
* using (BinaryWriter writer = new BinaryWriter(m))
* {
* writer.Write(msg.getID());
* writer.Write(msg.recipientAddress);
* writer.Write(msg.transactionID);
* }
* }
* Console.WriteLine("Sending encrypted message with key {0}", key);
*
* using (MemoryStream m = new MemoryStream())
* {
* using (BinaryWriter writer = new BinaryWriter(m))
* {
* writer.Write(msg.getID());
* writer.Write(msg.recipientAddress);
* writer.Write(msg.transactionID);
*
* byte[] encrypted_message = CryptoManager.lib.encryptDataS2(msg.data, key);
* int encrypted_count = encrypted_message.Count();
*
* writer.Write(encrypted_count);
* writer.Write(encrypted_message);
*
* byte[] ba = ProtocolMessage.prepareProtocolMessage(ProtocolMessageCode.s2data, m.ToArray());
* socket.Send(ba, SocketFlags.None);
*
*
* // Update the DLT transaction as well
* Transaction transaction = new Transaction(0, msg.recipientAddress, Node.walletStorage.address);
* transaction.id = msg.transactionID;
* //transaction.data = Encoding.UTF8.GetString(checksum);
* //ProtocolMessage.broadcastProtocolMessage(ProtocolMessageCode.updateTransaction, transaction.getBytes());
*
* }
* }
* }*/
// Called when receiving S2 data from clients
public static void receiveData(byte[] bytes, RemoteEndpoint endpoint)
{
StreamMessage message = new StreamMessage(bytes);
if (message.data == null)
{
Logging.error(string.Format("Null message data."));
return;
}
Logging.info("Received S2 data from {0} for {1}", Base58Check.Base58CheckEncoding.EncodePlain(message.sender), Base58Check.Base58CheckEncoding.EncodePlain(message.recipient));
Friend friend = null;
// decrypt the message if necessary
// TODO TODO TODO add message receive queue for when the keys aren't available yet
if (message.encryptionType != StreamMessageEncryptionCode.none)
{
byte[] aes_key = null;
byte[] chacha_key = null;
friend = FriendList.getFriend(message.sender);
if (friend != null)
{
aes_key = friend.aesKey;
chacha_key = friend.chachaKey;
}
if (!message.decrypt(Node.walletStorage.getPrimaryPrivateKey(), aes_key, chacha_key))
{
Logging.error("Could not decrypt message from {0}", Base58Check.Base58CheckEncoding.EncodePlain(friend.walletAddress));
return;
}
}
// Extract the Spixi message
SpixiMessage spixi_message = new SpixiMessage(message.data);
switch (spixi_message.type)
{
case SpixiMessageCode.chat:
{
// Add the message to the friend list
FriendList.addMessage(spixi_message.id, message.sender, Encoding.UTF8.GetString(spixi_message.data));
}
break;
case SpixiMessageCode.getNick:
{
// Send the nickname to the sender as requested
handleGetNick(message.sender, Encoding.UTF8.GetString(spixi_message.data));
}
break;
case SpixiMessageCode.nick:
{
// Set the nickname for the corresponding address
if (spixi_message.data != null)
{
FriendList.setNickname(message.sender, Encoding.UTF8.GetString(spixi_message.data));
}
else
{
FriendList.setNickname(message.sender, Base58Check.Base58CheckEncoding.EncodePlain(message.sender));
}
}
break;
case SpixiMessageCode.requestAdd:
{
// Friend request
handleRequestAdd(spixi_message.id, message.sender, spixi_message.data);
}
break;
case SpixiMessageCode.acceptAdd:
{
// Friend accepted request
handleAcceptAdd(message.sender, spixi_message.data);
}
break;
case SpixiMessageCode.sentFunds:
{
// Friend requested funds
handleSentFunds(spixi_message.id, message.sender, Encoding.UTF8.GetString(spixi_message.data));
}
break;
case SpixiMessageCode.requestFunds:
{
// Friend requested funds
handleRequestFunds(spixi_message.id, message.sender, Encoding.UTF8.GetString(spixi_message.data));
}
break;
case SpixiMessageCode.requestFundsResponse:
{
handleRequestFundsResponse(spixi_message.id, message.sender, Encoding.UTF8.GetString(spixi_message.data));
}
break;
case SpixiMessageCode.keys:
{
handleReceivedKeys(message.sender, spixi_message.data);
}
break;
case SpixiMessageCode.msgReceived:
{
handleMsgReceived(message.sender, spixi_message);
// don't send confirmation back, so just return
return;
}
case SpixiMessageCode.msgRead:
{
handleMsgRead(message.sender, spixi_message);
// don't send confirmation back, so just return
return;
}
case SpixiMessageCode.fileHeader:
{
handleFileHeader(message.sender, spixi_message);
}
break;
}
if (friend == null)
{
friend = FriendList.getFriend(message.sender);
}
if (friend == null)
{
Logging.error("Cannot send received confirmation, friend is null");
return;
}
// Send received confirmation
StreamMessage msg_received = new StreamMessage();
msg_received.type = StreamMessageCode.info;
msg_received.sender = IxianHandler.getWalletStorage().getPrimaryAddress();
msg_received.recipient = message.sender;
msg_received.data = new SpixiMessage(spixi_message.id, SpixiMessageCode.msgReceived, null).getBytes();
msg_received.transaction = new byte[1];
msg_received.sigdata = new byte[1];
msg_received.encryptionType = StreamMessageEncryptionCode.none;
sendMessage(friend, msg_received, true);
}
// Send an encrypted message using the S2 network
public static bool sendMessage(Friend friend, StreamMessage msg, bool add_to_offline_messages = true)
{
// TODO this function has to be improved and node's wallet address has to be added
string hostname = friend.searchForRelay();
if (friend.publicKey != null && (msg.encryptionType == StreamMessageEncryptionCode.rsa || (friend.aesKey != null && friend.chachaKey != null)))
{
msg.encrypt(friend.publicKey, friend.aesKey, friend.chachaKey);
}
else if (msg.encryptionType != StreamMessageEncryptionCode.none || !friend.online)
{
if (friend.publicKey == null)
{
byte[] pub_k = FriendList.findContactPubkey(friend.walletAddress);
friend.publicKey = pub_k;
}
StreamClientManager.connectTo(hostname, null); // TODO replace null with node address
Logging.warn("Could not send message to {0}, due to missing encryption keys, adding to offline queue!", Base58Check.Base58CheckEncoding.EncodePlain(msg.recipient));
if (add_to_offline_messages)
{
addOfflineMessage(msg);
}
return(false);
}
if (!StreamClientManager.sendToClient(hostname, ProtocolMessageCode.s2data, msg.getBytes(), Encoding.UTF8.GetBytes(msg.getID())))
{
StreamClientManager.connectTo(hostname, null); // TODO replace null with node address
Logging.warn("Could not send message to {0}, adding to offline queue!", Base58Check.Base58CheckEncoding.EncodePlain(msg.recipient));
if (add_to_offline_messages)
{
addOfflineMessage(msg);
}
return(false);
}
return(true);
/* string pub_k = FriendList.findContactPubkey(msg.recipientAddress);
* if (pub_k.Length < 1)
* {
* Console.WriteLine("Contact {0} not found, adding to offline queue!", msg.recipientAddress);
* addOfflineMessage(msg);
* return;
* }
*
*
* // Create a new IXIAN transaction
* // byte[] checksum = Crypto.sha256(encrypted_message);
* Transaction transaction = new Transaction(0, msg.recipientAddress, Node.walletStorage.address);
* // transaction.data = Encoding.UTF8.GetString(checksum);
* msg.transactionID = transaction.id;
* //ProtocolMessage.broadcastProtocolMessage(ProtocolMessageCode.newTransaction, transaction.getBytes());
*
* // Add message to the queue
* messages.Add(msg);
*
* // Request a new keypair from the S2 Node
* if(hostname == null)
* ProtocolMessage.broadcastProtocolMessage(ProtocolMessageCode.s2generateKeys, Encoding.UTF8.GetBytes(msg.getID()));
* else
* {
* NetworkClientManager.sendData(ProtocolMessageCode.s2generateKeys, Encoding.UTF8.GetBytes(msg.getID()), hostname);
* }*/
}
public async Task onSendFile()
{
// Show file picker and send the file
try
{
Stream stream = null;
string fileName = null;
string filePath = null;
// Special case for iOS platform
if (Device.RuntimePlatform == Device.iOS)
{
var picker_service = DependencyService.Get <IPicturePicker>();
SpixiImageData spixi_img_data = await picker_service.PickImageAsync();
stream = spixi_img_data.stream;
if (stream == null)
{
return;
}
fileName = spixi_img_data.name;
filePath = spixi_img_data.path;
}
else
{
FileData fileData = await CrossFilePicker.Current.PickFile();
if (fileData == null)
{
return; // User canceled file picking
}
stream = fileData.GetStream();
fileName = fileData.FileName;
filePath = fileData.FilePath;
}
FileTransfer transfer = TransferManager.prepareFileTransfer(fileName, stream, filePath);
Logging.info("File Transfer uid: " + transfer.uid);
SpixiMessage spixi_message = new SpixiMessage(SpixiMessageCode.fileHeader, transfer.getBytes());
StreamMessage message = new StreamMessage();
message.type = StreamMessageCode.data;
message.recipient = friend.walletAddress;
message.sender = Node.walletStorage.getPrimaryAddress();
message.transaction = new byte[1];
message.sigdata = new byte[1];
message.data = spixi_message.getBytes();
StreamProcessor.sendMessage(friend, message);
string message_data = string.Format("{0}:{1}", transfer.uid, transfer.fileName);
// store the message and display it
FriendMessage friend_message = FriendList.addMessageWithType(message.id, FriendMessageType.fileHeader, friend.walletAddress, message_data, true);
friend_message.transferId = transfer.uid;
friend_message.filePath = transfer.filePath;
Node.localStorage.writeMessages(friend.walletAddress, friend.messages);
}
catch (Exception ex)
{
Logging.error("Exception choosing file: " + ex.ToString());
}
}
public async void onSend(string str)
{
if (str.Length < 1)
{
return;
}
await Task.Run(() =>
{
// TODOSPIXI
/* // Send the message to the S2 nodes
* byte[] recipient_address = friend.wallet_address;
* byte[] encrypted_message = StreamProcessor.prepareSpixiMessage(SpixiMessageCode.chat, str, friend.pubkey);
* // CryptoManager.lib.encryptData(Encoding.UTF8.GetBytes(string_to_send), friend.pubkey);
*
* // Check the relay ip
* string relayip = friend.getRelayIP();
* if (relayip == null)
* {
* Logging.warn("No relay node to send message to!");
* return;
* }
* if (relayip.Equals(node_ip, StringComparison.Ordinal) == false)
* {
*
* node_ip = relayip;
* // Connect to the contact's S2 relay first
* NetworkClientManager.connectToStreamNode(relayip);
*
* // TODO: optimize this
* while (NetworkClientManager.isNodeConnected(relayip) == false)
* {
*
* }
* }
*
* Message message = new Message();
* message.recipientAddress = recipient_address;
* message.data = encrypted_message;
*
* StreamProcessor.sendMessage(message, node_ip);*/
// store the message and display it
FriendMessage friend_message = FriendList.addMessageWithType(null, FriendMessageType.standard, friend.walletAddress, str, true);
// Finally, clear the input field
Utils.sendUiCommand(webView, "clearInput");
// Send the message
SpixiMessage spixi_message = new SpixiMessage(SpixiMessageCode.chat, Encoding.UTF8.GetBytes(str));
StreamMessage message = new StreamMessage();
message.type = StreamMessageCode.data;
message.recipient = friend.walletAddress;
message.sender = Node.walletStorage.getPrimaryAddress();
message.transaction = new byte[1];
message.sigdata = new byte[1];
message.data = spixi_message.getBytes();
message.id = friend_message.id;
if (friend.bot)
{
message.encryptionType = StreamMessageEncryptionCode.none;
message.sign(IxianHandler.getWalletStorage().getPrimaryPrivateKey());
}
StreamProcessor.sendMessage(friend, message);
});
}
public void insertMessage(FriendMessage message)
{
if (friend.approved == false)
{
if (message.type == FriendMessageType.requestAdd)
{
// Call webview methods on the main UI thread only
Utils.sendUiCommand(webView, "showContactRequest", "1");
message.read = true;
return;
}
}
else
{
// Don't show if the friend is already approved
if (message.type == FriendMessageType.requestAdd)
{
return;
}
}
string prefix = "addMe";
string avatar = "";//Node.localStorage.getOwnAvatarPath();
if (!message.localSender)
{
prefix = "addThem";
avatar = "img/spixiavatar.png";
}
if (message.type == FriendMessageType.requestFunds)
{
string status = "PENDING";
string status_icon = "fa-clock";
string amount = message.message;
if (message.message.StartsWith("::"))
{
status = "DECLINED";
status_icon = "fa-exclamation-circle";
amount = message.message.Substring(2);
}
else if (message.message.StartsWith(":"))
{
Transaction transaction = TransactionCache.getTransaction(message.message.Substring(1));
if (transaction == null)
{
transaction = TransactionCache.getUnconfirmedTransaction(message.message.Substring(1));
}
amount = "?";
if (transaction != null)
{
amount = transaction.amount.ToString();
if (transaction.applied > 0)
{
status = "CONFIRMED";
status_icon = "fa-check-circle";
}
}
}
if (message.localSender)
{
Utils.sendUiCommand(webView, "addPaymentRequest", Crypto.hashToString(message.id), avatar, "Payment request SENT", amount, status, status_icon, Clock.getRelativeTime(message.timestamp), message.localSender.ToString());
}
else
{
Utils.sendUiCommand(webView, "addPaymentRequest", Crypto.hashToString(message.id), avatar, "Payment request RECEIVED", amount, status, status_icon, Clock.getRelativeTime(message.timestamp));
}
message.read = true;
return;
}
if (message.type == FriendMessageType.sentFunds)
{
message.read = true;
Transaction transaction = TransactionCache.getTransaction(message.message);
if (transaction == null)
{
transaction = TransactionCache.getUnconfirmedTransaction(message.message);
}
string status = "PENDING";
string status_icon = "fa-clock";
string amount = "?";
if (transaction != null)
{
if (transaction.applied > 0)
{
status = "CONFIRMED";
status_icon = "fa-check-circle";
}
amount = transaction.amount.ToString();
}
// Call webview methods on the main UI thread only
if (message.localSender)
{
Utils.sendUiCommand(webView, "addPaymentRequest", Crypto.hashToString(message.id), avatar, "Payment SENT", amount, status, status_icon, Clock.getRelativeTime(message.timestamp), message.localSender.ToString());
}
else
{
Utils.sendUiCommand(webView, "addPaymentRequest", Crypto.hashToString(message.id), avatar, "Payment RECEIVED", amount, status, status_icon, Clock.getRelativeTime(message.timestamp));
}
return;
}
if (message.type == FriendMessageType.fileHeader)
{
prefix = "addFile";
}
// Call webview methods on the main UI thread only
Utils.sendUiCommand(webView, prefix, Crypto.hashToString(message.id), avatar, message.message, Clock.getRelativeTime(message.timestamp), message.confirmed.ToString(), message.read.ToString());
if (!message.read && !message.localSender)
{
message.read = true;
Node.localStorage.writeMessagesFile(friend.walletAddress, friend.messages);
// Send read confirmation
StreamMessage msg_received = new StreamMessage();
msg_received.type = StreamMessageCode.info;
msg_received.sender = IxianHandler.getWalletStorage().getPrimaryAddress();
msg_received.recipient = friend.walletAddress;
msg_received.data = new SpixiMessage(message.id, SpixiMessageCode.msgRead, null).getBytes();
msg_received.transaction = new byte[1];
msg_received.sigdata = new byte[1];
msg_received.encryptionType = StreamMessageEncryptionCode.none;
StreamProcessor.sendMessage(friend, msg_received, true);
}
}