/// <summary>
/// Interpret a single command
/// </summary>
/// <param name="received_command">the command to interpret</param>
private void InterpretCommand(string received_command)
{
int command_end = received_command.IndexOf(" ");
if (command_end == -1) command_end = received_command.Length;
if (command_end != -1)
{
string parameter = "";
string[] parameters ={ };
string command = received_command.Substring(1);
if (command_end != received_command.Length)
{
command = received_command.Substring(1, command_end - 1);
parameter = received_command.Substring(command_end + 1);
parameters = parameter.Split(" ".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
//Console.WriteLine("Command: '" + command + "' ,Parameter(" + parameters.Length + "): '" + parameter + "'");
}
switch (command)
{
case "HubName" :
//Console.WriteLine("Hubname Command received: " + parameter);
name = parameter;
//fire nameChange event
break;
case "Hello" :
//Console.WriteLine("Hello Command received: " + parameters[0]);
if (!is_logged_in)
{
is_logged_in = true;
SendCommand("Version", my_version);
SendCommand("GetNickList");
SendMyInfo();
//Console.WriteLine("Logged in Hub: "+name);
try
{
if (LoggedIn != null)
LoggedIn(this);
}
catch (Exception ex)
{
Console.WriteLine("Exception in LoggedIn: " + ex.Message);
}
}
else
{//new user announced by server
//Console.WriteLine("User "+parameters[0]+" has joined Hub: "+name);
UserListAdd(parameters[0]);
}
break;
case "Quit":
//Console.WriteLine("User "+parameters[0]+" has left Hub: "+name);
UserListRemove(parameters[0]);
break;
case "NickList":
Console.WriteLine("NickList Message received.");
UserListClear();
string[] temp_users = parameters[0].Split("$$".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
foreach (string temp_user in temp_users)
{
UserListAdd(temp_user);
}
break;
case "OpList":
op_list.Clear();
string[] temp_ops = parameters[0].Split("$$".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
foreach (string temp_op in temp_ops)
{
op_list.Add(temp_op);
}
break;
case "ConnectToMe":
try
{
string peer_address = "";
if (parameters.Length == 2)
{
peer_address = parameters[1];
}
else if (parameters.Length == 3)
{
peer_address = parameters[2];
}
else break;
Peer peer = new Peer(peer_address); //add username also, to counter possible network attacks
if (ConnectToMeReceived != null)
ConnectToMeReceived(this, peer);
}
catch (Exception ex)
{
Console.WriteLine("Exception in ConnectToMe EventHandler: " + ex.Message);
}
break;
case "RevConnectToMe":
SendConnectToMe(parameters[0]);
break;
case "HubTopic":
//topic = parameters[0];
topic = parameter;
break;
case "UserCommand":
//Console.WriteLine("User Command received: "+parameter);
//TODO support user context menu entries
break;
case "Search":
//Console.WriteLine("Search Command received: "+parameter);
SearchParameters search = new SearchParameters();
if(parameters[0].StartsWith("Hub:"))
{
search.mode = ConnectionMode.Passive;
int username_start = parameters[0].IndexOf(":");
if (username_start == -1 || username_start + 1 > parameters[0].Length) break;
search.username = parameters[0].Substring(username_start + 1);
}
else
{
search.mode = ConnectionMode.Active;
int port_start = parameters[0].IndexOf(":");
if (port_start == -1 || port_start + 1 > parameters[0].Length) break;
search.ip = parameters[0].Substring(0,port_start);
try
{
search.port = int.Parse(parameters[0].Substring(port_start + 1));
}
catch (Exception ex)
{
Console.WriteLine("error parsing port in search: " + ex.Message);
break;
}
}
char[] seps ={ '?' };
string[] search_parameters = parameters[1].Split(seps,StringSplitOptions.RemoveEmptyEntries);
if (search_parameters.Length < 4) break;
if (search_parameters[0] == "F")
search.size_restricted = false;
else search.size_restricted = true;
if (search_parameters[1] == "F")
search.is_max_size = false;
else search.is_max_size = true;
try
{
search.size = long.Parse(search_parameters[2]);
search.file_type = (SearchFileType)int.Parse(search_parameters[3]);
}
catch (Exception ex)
{
Console.WriteLine("error parsing ints in search: " + ex.Message);
break;
}
if (search_parameters[4].StartsWith("TTH:") && search.file_type == SearchFileType.tth && search_parameters[4].Length > 4)
search.tth = search_parameters[4].Substring(4);
else search.search_string = search_parameters[4];
//TODO above throws exceptions
if (SearchReceived != null)
SearchReceived(this,search);
break;
case "Supports":
supports = (string[])parameters.Clone();
break;
case "UserIP":
Console.WriteLine("UserIP Message received: " + parameter);
break;
case "MCTo:":
string mcto_username = parameters[1].Substring(1); //to skip the leading $
int mcto_message_start = parameters[0].Length + parameters[1].Length + 2;
if (mcto_message_start < parameter.Length)
{
string mcto_message = parameter.Substring(mcto_message_start);
AddChatToHistory(mcto_username, mcto_message);
}
break;
case "To:":
//Console.WriteLine("Private Message received: " + parameter);
string to_username = parameters[2];
int to_message_start = parameters[0].Length + parameters[1].Length + parameters[2].Length + parameters[3].Length + 4;
if (to_message_start < parameter.Length )
{
string to_message = parameter.Substring(to_message_start);
ChatLine to_message_line = new ChatLine(to_username, to_message);
if (PrivateChatLineReceived != null)
PrivateChatLineReceived(this, to_message_line);
}
break;
case "SR":
//Console.WriteLine("Search result received: " + parameter);
SearchResults.SearchResult result = new SearchResults.SearchResult();
result.ResultLine = parameter;
try
{
if (SearchResultReceived != null)
SearchResultReceived(this, result);
}
catch (Exception ex)
{
Console.WriteLine("Exception in event handler: " + ex.Message);
}
break;
case "LogedIn":
Console.WriteLine("LogedIn Message received: " + parameter);
//what the hell is this and who forgot to take some english lessons ?
break;
case "MyINFO":
//Console.WriteLine("MyINFO Message received: " + parameter);
UserListAdd(parameters[1]);
break;
case "GetPass":
Console.WriteLine("GetPass Message received: " + parameter);
if (PasswordRequested != null)
{
string password = PasswordRequested(this);
SendPassword(password);
}
break;
case "ForceMove":
//Console.WriteLine("FORCE MOVE NOT IMPLEMENTED");
if (MoveForced != null)
{
Hub dst_hub = this.Copy();
MoveForced(this, dst_hub);
}
break;
case "ValidateDenide":
Console.WriteLine("Nick: "+parameters[0]+" on Hub: " + name + " is already in use.");
break;
case "HubIsFull":
Console.WriteLine("Hub: " + name + " is full.");
Disconnect();
break;
case "Lock" :
//Console.WriteLine("Lock Command received: "+parameter);
//int key_end = parameter.IndexOf(" ");
//if (key_end != -1)
//{
//string key = parameter.Substring(0, key_end);
if (parameters.Length > 1)
{
string key = parameters[0];
//Console.WriteLine("Key: " + key);
if (key.StartsWith("EXTENDEDPROTOCOL"))
{
is_extended_protocol = true;
//Console.WriteLine("Hub is using the dc++ protocol enhancements.");
//SendCommand("Supports", "UserCommand NoGetINFO NoHello UserIP2 TTHSearch ZPipe0 GetZBlock ");
SendCommand("Supports", "UserCommand TTHSearch NoGetINFO NoHello ");
}
//string decoded_key = MyLockToKey(key);
string decoded_key = L2K(key);
//Console.WriteLine("Decoded key: " + decoded_key);
SendCommand("Key" , decoded_key);
SendCommand("ValidateNick", nick);
}
break;
default:
Console.WriteLine("Unknown Command received: " + command + ", Parameter: " + parameter);
break;
}
}
else Console.WriteLine("Error interpreting command: " + received_command);
}
/// <summary>
/// Setup the event handlers for a fresh connected peer
/// </summary>
/// <param name="client">an ungrabbed peer</param>
private void SetupPeerEventHandler(Peer client)
{
client.Nick = nick;
client.DataReceived += delegate(Peer data_received_client)
{/*
Queue.QueueEntry entry = download_queue.FindFirstUnusedQueueEntryBySourceUser(data_received_client.PeerNick);
if (entry != null)
{
Queue.QueueEntry.Source source = entry.FindFirstSourceByUser(data_received_client.PeerNick);
if (source != null)
{
entry.IsInUse = true;
}
else
{
Console.WriteLine("no correct source found in queue entry for user: "******"nothing found in queue for user: "******"files.xml.bz2")
file_list_request_client.UploadFilename = file_list_request_client.UploadRequestFilename;
file_list_request_client.UploadFileListData = shares.GetFileListXmlBZ2();
return (Peer.FileRequestAnswer.LetsGo);
};
client.FileRequestReceived += delegate(Peer file_request_client)
{
Sharing.SharingEntry entry = shares.GetShareByFileRequest(file_request_client.UploadRequestFilename);
if(entry!=null)
{
file_request_client.UploadFilename = entry.Filename;
return (Peer.FileRequestAnswer.LetsGo);
}
else return (Peer.FileRequestAnswer.FileNotAvailable);
};
client.HandShakeCompleted += delegate(Peer handshake_client)
{
if (PeerHandShakeCompleted != null)
PeerHandShakeCompleted(handshake_client);
Queue.QueueEntry entry = download_queue.FindFirstUnusedQueueEntryBySourceUser(handshake_client.PeerNick);
if (entry != null)
{
Queue.QueueEntry.Source source = entry.FindFirstSourceByUser(handshake_client.PeerNick);
if (source != null)
{
//handshake_client.StartDownload(source.Filename, entry.OutputFilename, entry.Filesize);
if (entry.Type == Queue.QueueEntry.EntryType.File && entry.WantTTHL)
handshake_client.GetTTHL(entry);
else if (entry.Type == Queue.QueueEntry.EntryType.File )
handshake_client.StartDownload(source, entry);
else if (entry.Type == Queue.QueueEntry.EntryType.FileList)
handshake_client.GetFileList(entry);
}
else
{
Console.WriteLine("no correct source found in queue entry for user: "******"nothing found in queue for user: " + handshake_client.PeerNick);
handshake_client.Disconnect();
}
}
};
client.Completed += delegate(Peer completed_client)
{
//download_queue.Remove(download_queue.FindQueueEntryByOutputFilename(completed_client.OutputFilename));
if(auto_remove_downloads)
download_queue.Remove(completed_client.QueueEntry);
ContinueWithQueueForUser(completed_client.PeerNick);
if (PeerCompleted != null)
PeerCompleted(completed_client);
};
client.Disconnected += delegate(Peer disconnected_client)
{
lock (peers_lock)
{
if(peers.Contains(disconnected_client))
peers.Remove(disconnected_client);
}
//Queue.QueueEntry entry = download_queue.FindQueueEntryByOutputFilename(disconnected_client.OutputFilename);
//Queue.QueueEntry entry = disconnected_client.QueueEntry;
//if (entry != null) //TODO this will cause trouble -> fix with disconnect cause change in callback
// entry.IsInUse = false;
//ContinueWithQueueForUser(disconnected_client.PeerNick);//TODO prevent hammering on strange source with a seconds counter
if (PeerDisconnected != null)
PeerDisconnected(disconnected_client);
};
}
/// <summary>
/// Callback to accept tcp connections
/// </summary>
/// <param name="result">Async Result/State</param>
private void OnAccept(IAsyncResult result)
{
if (!IsListening) return;
if (tcp_socket != null)
{
//if(
if (!tcp_socket.IsBound) return;
if (!result.IsCompleted) return;
try
{
if (tcp_socket != ((Socket)result.AsyncState)) return;
Socket accept_socket = (Socket)result.AsyncState;
if (accept_socket == null) return;
if (!accept_socket.IsBound) return;
//if (!accept_socket.Connected) return;
//Console.WriteLine("trying end accept.");
//accept_socket.a
Socket client = tcp_socket.EndAccept(result);
if (!client.Connected) return;
//Console.WriteLine("new client connected.");
Peer new_peer = new Peer(client);
if (PeerConnected != null)
{
PeerConnected(new_peer);
}
//accept_socket.Close();
}
catch (Exception ex)
{
Console.WriteLine("Error accepting connection: " + ex.Message);
}
try
{
AsyncCallback event_accept = new AsyncCallback(OnAccept);
tcp_socket.BeginAccept(event_accept, tcp_socket);
}
catch (Exception ex)
{
Console.WriteLine("Fatal Error accepting connection: " + ex.Message);
}
}
else Console.WriteLine("Accept on tcp socket aborted.");
}
