public int Send(byte[] buffer)
{
if (buffer[0] == 'W' && buffer[1] == 'A')
{
//received hello, must wait for features
protocolPhase = 1;
}
else
{
MessageParser parser = new MessageParser();
ProtocolNode node = parser.ParseNode(buffer);
if (node.tag == "stream:features")
{
//received features, must wait for auth
protocolPhase = 2;
}
else if (node.tag == "auth")
{
protocolPhase = 3;
receiveBuffer = new List<byte>();
//<stream:stream from="s.whatsapp.net"></stream:stream>
Dictionary<string, string> startNodeAttributes = new Dictionary<string, string>();
startNodeAttributes["from"] = "s.whatsapp.net";
ProtocolNode startNode = new ProtocolNode("stream:stream", startNodeAttributes, null, "");
receiveBuffer.AddRange(startNode.ToBytes());
// <stream:features>
// <receipt_acks></receipt_acks>
//</stream:features>
ProtocolNode receiptAcksNode = new ProtocolNode("receipt_acks", null, null, "");
List<ProtocolNode> featuresNodeChildren = new List<ProtocolNode>();
featuresNodeChildren.Add(receiptAcksNode);
ProtocolNode featuresNode = new ProtocolNode("stream:features", null, featuresNodeChildren, "");
receiveBuffer.AddRange(featuresNode.ToBytes());
// <challenge xmlns="urn:ietf:params:xml:ns:xmpp-sasl">bm9uY2U9IjE0OTcxOTQ2MzkyMSIscW9wPSJhdXRoIixjaGFyc2V0PXV0Zi04LGFsZ29yaXRobT1tZDUtc2Vzcw==</challenge>
Dictionary<string, string> attributes = new Dictionary<string, string>();
attributes["xmlns"] = "urn:ietf:params:xml:ns:xmpp-sasl";
ProtocolNode challenge = new ProtocolNode("challenge", attributes, null, "bm9uY2U9IjE0OTcxOTQ2MzkyMSIscW9wPSJhdXRoIixjaGFyc2V0PXV0Zi04LGFsZ29yaXRobT1tZDUtc2Vzcw==");
receiveBuffer.AddRange(challenge.ToBytes());
}
else if (node.tag == "response")
{
//received
//<response xmlns="urn:ietf:params:xml:ns:xmpp-sasl">dXNlcm5hbWU9IjU1NTE5ODc2NTQzMiIscmVhbG09InMud2hhdHNhcHAubmV0Iixub25jZT0iMTQ5NzE5NDYzOTIxIixjbm9uY2U9IjM2MzgzNTNhMzUzNTM1MzEzOTM4MzczNjM1MzQzMzMyM2EzODMxMzIzODYxMzQzMDM4MzMzNzMxMzE2MTM4NjU2MTYzMzk2MTMzNjM2MzY0MzYzODMwNjM2MzMzNjMzOTMyIixuYz0wMDAwMDAwMSxxb3A9YXV0aCxkaWdlc3QtdXJpPSJ4bXBwL3Mud2hhdHNhcHAubmV0IixyZXNwb25zZT1lM2Q5MjIxOTRlN2M3MTBlYmE3YjEyNjI4Mjc5MTgzMyxjaGFyc2V0PXV0Zi04</response>
//must verify and send success
MessageFactory factory = new MessageFactory();
Dictionary<string,string> encodedAttributes = factory.ProcessChallenge(node);
if (encodedAttributes["username"] == "555198765432"
&& encodedAttributes["realm"] == "s.whatsapp.net"
&& encodedAttributes["nonce"] == "149719463921"
&& encodedAttributes["nc"] == "00000001"
&& encodedAttributes["qop"] == "auth"
&& encodedAttributes["digest-uri"] == "xmpp/s.whatsapp.net"
&& encodedAttributes["charset"] == "utf-8")
{
//&& encodedAttributes["cnonce"] == "aaaaa"
//&& encodedAttributes["response"] == "e3d922194e7c710eba7b126282791833"
//TODO: validate cnonce e response
//send
//<success xmlns="urn:ietf:params:xml:ns:xmpp-sasl" status="active" kind="free" creation="1338065926" expiration="1369601926"></success>
ProtocolNode success = new ProtocolNode("success", null, null, "");
receiveBuffer.AddRange(success.ToBytes());
}
}
}
return buffer.Length;
}
public void LoginTest()
{
// send:
// - hello
// - feature
// - auth
TcpSocketMock socket = new TcpSocketMock();
MessageFactory messageFactory = new MessageFactory();
socket.Connect("bin-short.whatsapp.net", 5222);
List<byte> helloMessage = messageFactory.CreateHelloMessage();
socket.Send(helloMessage.ToArray());
ProtocolNode features = messageFactory.CreateFeaturesNode();
socket.Send(features.ToBytes());
ProtocolNode authNode = messageFactory.CreateAuthNode();
socket.Send(authNode.ToBytes());
// receive
// - start (tream)
// - features
// - challenge
byte[] startMessage = new byte[7];
socket.Receive(startMessage, SocketFlags.None);
MessageParser parser = new MessageParser();
ProtocolNode startNode = parser.ParseNode(startMessage);
Console.WriteLine(startNode.ToString());
byte[] serverFeaturesMessage = new byte[10];
socket.Receive(serverFeaturesMessage, SocketFlags.None);
parser = new MessageParser();
ProtocolNode serverFeaturesNode = parser.ParseNode(serverFeaturesMessage);
Console.WriteLine(serverFeaturesNode.ToString());
byte[] challengeMessage = new byte[97];
socket.Receive(challengeMessage, SocketFlags.None);
//send
// - response
parser = new MessageParser();
ProtocolNode challengeNode = parser.ParseNode(challengeMessage);
Console.WriteLine(challengeNode.ToString());
Dictionary<string, string> challengeParameters = messageFactory.ProcessChallenge(challengeNode);
string nonce = challengeParameters["nonce"];
string qop = challengeParameters["qop"];
string charset = challengeParameters["charset"];
string algorithm = challengeParameters["algorithm"];
WhatsAppApi api = new WhatsAppApi();
ProtocolNode authResponseNode = messageFactory.CreateAuthResponseNode("s.whatsapp.net", "555198765432", api.EncryptPassword("175422846762539"), nonce, qop, charset);
socket.Send(authResponseNode.ToBytes());
byte[] serverMessage = new byte[1024];
socket.Receive(serverMessage, SocketFlags.None);
parser = new MessageParser();
ProtocolNode resultNode = parser.ParseNode(serverMessage);
Console.WriteLine(resultNode.ToString());
Assert.AreEqual(resultNode.tag, "success");
}
