Exemplo n.º 1
0
func (s *IRCd) manageServers() {
	defer s.running.Done()

	sid2conn := make(map[string]*conn.Conn)
	upstream := ""
	_ = upstream

	var open bool = true
	var msg *parser.Message
	for open {
		// Check if we are connected to our upstream
		// TODO(kevlar): upstream

		select {
		//// Incoming and outgoing messages to and from servers
		// Messages directly from connections
		case msg = <-s.fromServer:
			var conn *conn.Conn
			var ok bool
			if conn, ok = sid2conn[msg.SenderID]; !ok {
				log.Debug.Printf("{%s} >> [DROPPING] %s\n", msg.SenderID, msg)
				continue
			}
			log.Debug.Printf("{%s} >> %s\n", msg.SenderID, msg)

			if msg.Command == parser.CMD_ERROR {
				if conn != nil {
					log.Debug.Printf("{%s} ** Connection terminated remotely", msg.SenderID)
					sid2conn[msg.SenderID] = nil, false
					conn.UnsubscribeClose(s.serverClosing)
					conn.Close()
					if server.IsLocal(msg.SenderID) {
						DispatchServer(&parser.Message{
							SenderID: msg.SenderID,
							Command:  parser.CMD_SQUIT,
							Args: []string{
								msg.SenderID,
								"Unexpected ERROR on connection",
							},
						}, s)
					}
				}
				continue
			}

			DispatchServer(msg, s)

		// Messages from hooks
		case msg, open = <-s.ToServer:
			// Count the number of messages sent
			sentcount := 0
			for _, dest := range msg.DestIDs {
				log.Debug.Printf("{%v} << %s\n", dest, msg)

				if conn, ok := sid2conn[dest]; ok {
					conn.WriteMessage(msg)
					sentcount++
				} else {
					log.Warn.Printf("Unknown SID %s", dest)
				}
			}

			if sentcount == 0 {
				log.Warn.Printf("Dropped outgoing server message: %s", msg)
			}

		//// Connection management
		// Connecting servers
		case conn := <-s.newServer:
			sid := conn.ID()
			sid2conn[sid] = conn
			server.Get(sid, true)
			log.Debug.Printf("{%s} ** Registered connection", sid)
			conn.Subscribe(s.fromServer)
			conn.SubscribeClose(s.serverClosing)
		// Disconnecting servers
		case closeid := <-s.serverClosing:
			log.Debug.Printf("{%s} ** Connection closed", closeid)
			sid2conn[closeid] = nil, false
			if server.IsLocal(closeid) {
				DispatchServer(&parser.Message{
					SenderID: closeid,
					Command:  parser.CMD_SQUIT,
					Args: []string{
						closeid,
						"Connection close",
					},
				}, s)
			}
		}
	}
}
Exemplo n.º 2
0
// Handle the NICK, USER, SERVER, and PASS messages
func ConnReg(hook string, msg *parser.Message, ircd *IRCd) {
	var err os.Error
	var u *user.User
	var s *server.Server

	switch len(msg.SenderID) {
	case 3:
		s = server.Get(msg.SenderID, true)
	case 9:
		u = user.Get(msg.SenderID)
	}

	switch msg.Command {
	case parser.CMD_NICK:
		// NICK <nick>
		if u != nil {
			nick := msg.Args[0]
			err = u.SetNick(nick)
		}
	case parser.CMD_USER:
		// USER <user> . . :<real name>
		if u != nil {
			username, realname := msg.Args[0], msg.Args[3]
			err = u.SetUser(username, realname)
		}
	case parser.CMD_PASS:
		if s != nil {
			if len(msg.Args) != 4 {
				return
			}
			// PASS <password> TS <ver> <pfx>
			err = s.SetPass(msg.Args[0], msg.Args[2], msg.Args[3])
		}
	case parser.CMD_CAPAB:
		if s != nil {
			err = s.SetCapab(msg.Args[0])
		}
	case parser.CMD_SERVER:
		if s != nil {
			err = s.SetServer(msg.Args[0], msg.Args[1])
		}
	default:
		log.Warn.Printf("Unknown command %q", msg)
	}

	if u != nil {
		if err != nil {
			switch err := err.(type) {
			case *parser.Numeric:
				msg := err.Message()
				msg.DestIDs = append(msg.DestIDs, u.ID())
				ircd.ToClient <- msg
				return
			default:
				msg := &parser.Message{
					Command: parser.CMD_ERROR,
					Args:    []string{err.String()},
					DestIDs: []string{u.ID()},
				}
				ircd.ToClient <- msg
				return
			}
		}

		nickname, username, realname, _ := u.Info()
		if nickname != "*" && username != "" {
			// Notify servers
			for sid := range server.Iter() {
				ircd.ToServer <- &parser.Message{
					Prefix:  Config.SID,
					Command: parser.CMD_UID,
					Args: []string{
						nickname,
						"1",
						u.TS(),
						"+i",
						username,
						"some.host",
						"127.0.0.1",
						u.ID(),
						realname,
					},
					DestIDs: []string{sid},
				}
			}

			// Process signon
			sendSignon(u, ircd)
			return
		}
	}

	if s != nil {
		if err != nil {
			switch err := err.(type) {
			case *parser.Numeric:
				msg := err.Message()
				msg.DestIDs = append(msg.DestIDs, s.ID())
				ircd.ToServer <- msg
				return
			default:
				msg := &parser.Message{
					Command: parser.CMD_ERROR,
					Args:    []string{err.String()},
					DestIDs: []string{s.ID()},
				}
				ircd.ToServer <- msg
				return
			}
		}

		sid, serv, pass, capab := s.Info()
		if sid != "" && serv != "" && pass != "" && len(capab) > 0 {
			// Notify servers
			for sid := range server.Iter() {
				ircd.ToServer <- &parser.Message{
					Prefix:  Config.SID,
					Command: parser.CMD_SID,
					Args: []string{
						serv,
						"2",
						sid,
						"some server",
					},
					DestIDs: []string{sid},
				}
			}

			sendServerSignon(s, ircd)
			Burst(s, ircd)
		}
	}
}