func NewCharTemplatePacket() []byte {
buffer := packets.NewBuffer()
buffer.WriteByte(0x23) // Packet type: CharTemplate
buffer.WriteUInt32(0x00) // We don't actually need to send the template to the client
return buffer.Bytes()
}
func NewCharListPacket() []byte {
buffer := packets.NewBuffer()
buffer.WriteByte(0x1f) // Packet type: CharList
buffer.Write([]byte{0x00, 0x00, 0x00, 0x00}) // TODO
return buffer.Bytes()
}
func NewCharCreateOkPacket() []byte {
buffer := packets.NewBuffer()
buffer.WriteByte(0x25) // Packet type: CharCreateOk
buffer.WriteUInt32(0x01) // Everything went like expected
return buffer.Bytes()
}
func NewCryptInitPacket() []byte {
key := []byte{0x94, 0x35, 0x00, 0x00, 0xa1, 0x6c, 0x54, 0x87}
buffer := packets.NewBuffer()
buffer.WriteByte(0x00) // Packet type: CryptInit
buffer.WriteByte(0x01) // ?
buffer.Write(key) // Key
return buffer.Bytes()
}
func (c *Client) Send(data []byte, params ...bool) error {
var doChecksum, doBlowfish bool = true, true
// Should we skip the checksum?
if len(params) >= 1 && params[0] == false {
doChecksum = false
}
// Should we skip the blowfish encryption?
if len(params) >= 2 && params[1] == false {
doBlowfish = false
}
if doChecksum == true {
// Add 4 empty bytes for the checksum new( new(
data = append(data, []byte{0x00, 0x00, 0x00, 0x00}...)
// Add blowfish padding
missing := len(data) % 8
if missing != 0 {
for i := missing; i < 8; i++ {
data = append(data, byte(0x00))
}
}
// Finally do the checksum
crypt.Checksum(data)
}
if doBlowfish == true {
var err error
data, err = crypt.BlowfishEncrypt(data, []byte("[;'.]94-31==-%&@!^+]\000"))
if err != nil {
return err
}
}
// Calculate the packet length
length := uint16(len(data) + 2)
// Put everything together
buffer := packets.NewBuffer()
buffer.WriteUInt16(length)
buffer.Write(data)
_, err := c.Socket.Write(buffer.Bytes())
if err != nil {
return errors.New("The packet couldn't be sent.")
}
return nil
}
func (g *GameServer) Send(data []byte) error {
// Calculate the packet length
length := uint16(len(data) + 2)
// Put everything together
buffer := packets.NewBuffer()
buffer.WriteUInt16(length)
buffer.Write(data)
_, err := g.loginServerSocket.Write(buffer.Bytes())
if err != nil {
return errors.New("The packet couldn't be sent.")
}
return nil
}