示例#1
0
// HandleFC handles incoming requests of packet 0xFC: EncryptionKeyResponse
func HandleFC(server *Server, sender *player.Player) {
	pkt := new(packet.EncryptionKeyResponse)
	pkt.ReadFrom(sender.Conn)

	// Decrypt shared secret and token with server's private key.
	var secret, token []byte
	// var err error
	secret, _ = rsa.DecryptPKCS1v15(rand.Reader, server.PrivateKey(), pkt.Secret)
	token, _ = rsa.DecryptPKCS1v15(rand.Reader, server.PrivateKey(), pkt.Token)

	// Ensure token matches
	if !bytes.Equal(token, sender.Token) {
		log.Println("Tokens don't match.")
		r := &packet.Disconnect{Reason: ReasonPiratedGame}
		r.WriteTo(sender.Conn)
		return
	}

	// Ensure player is legit
	if !server.CheckUser(sender.Name, secret) {
		log.Println("Failed to verify username!")
		r := packet.Disconnect{"Failed to verify username!"}
		r.WriteTo(sender.Conn)
		return
	}

	// Send empty EncryptionKeyResponse
	r := new(packet.EncryptionKeyResponse)
	r.WriteTo(sender.Conn)

	// Start AES/CFB8 stream encryption
	sender.OnlineMode(true, secret)
	log.Println("Enabling encryption.")
}
示例#2
0
// HandleFF handles incoming requests of packet 0xFF: Disconnect
func HandleFF(server *Server, sender *player.Player) {
	pkt := new(packet.Disconnect)
	pkt.ReadFrom(sender.Conn)

	log.Printf("Player %q exit. Reason: %s", sender.Name, pkt.Reason)

	// Send message to all other players
	msg := fmt.Sprintf("%s disconnected.", sender.Name)
	server.BroadcastMessage(msg)
}
示例#3
0
// HandleCD handles incoming requests of packet 0xCD: ClientStatuses
func HandleCD(server *Server, sender *player.Player) {
	pkt := new(packet.ClientStatuses)
	pkt.ReadFrom(sender.Conn)

	switch pkt.Payload {
	case 0:
		server.HandleLogin(sender)
	case 1:
	default:
		log.Println("Weird packet 0xCB payload:", pkt.Payload)
		r := packet.Disconnect{"Weird packet 0xCB payload"}
		r.WriteTo(sender.Conn)
	}
}
示例#4
0
// HandleFE handles incoming requests of packet 0xFE: ServerListPing
func HandleFE(server *Server, sender *player.Player) {
	pkt := new(packet.ServerListPing)
	pkt.ReadFrom(sender.Conn)

	if pkt.Magic != 1 {
		s := "Invalid %#x packet. Field Magic should be 1, got %d."
		reason := fmt.Sprintf(s, pkt.Id(), pkt.Magic)
		resp := packet.Disconnect{reason}
		resp.WriteTo(sender.Conn)
		return
	}

	in := fmt.Sprintf("%d", server.Players.Len())
	max := server.config.Get("server.max_players")
	resp := ping.Ping(ping.Prepare(server.Motd, in, max))
	resp.WriteTo(sender.Conn)
}