Implement some packet parsers

network/mhfpacket/msg_sys_login.go

@@ -6,7 +6,17 @@ import (
 )
 
 // MsgSysLogin represents the MSG_SYS_LOGIN
-type MsgSysLogin struct{}
+type MsgSysLogin struct {
+	AckHandle              uint32
+	CharID0                uint32
+	LoginTokenNumber       uint32
+	HardcodedZero0         uint16
+	RequestVersion         uint16
+	CharID1                uint32
+	HardcodedZero1         uint16
+	LoginTokenStringLength uint16 // Hardcoded to 0x11
+	LoginTokenString       string
+}
 
 // Opcode returns the ID associated with this packet type.
 func (m *MsgSysLogin) Opcode() network.PacketID {
@@ -15,10 +25,20 @@ func (m *MsgSysLogin) Opcode() network.PacketID {
 
 // Parse parses the packet from binary
 func (m *MsgSysLogin) Parse(bf *byteframe.ByteFrame) error {
-	panic("Not implemented")
+	m.AckHandle = bf.ReadUint32()
+	m.CharID0 = bf.ReadUint32()
+	m.LoginTokenNumber = bf.ReadUint32()
+	m.HardcodedZero0 = bf.ReadUint16()
+	m.RequestVersion = bf.ReadUint16()
+	m.CharID1 = bf.ReadUint32()
+	m.HardcodedZero1 = bf.ReadUint16()
+	m.LoginTokenStringLength = bf.ReadUint16()
+	m.LoginTokenString = string(bf.ReadBytes(17)) // TODO(Andoryuuta): What encoding is this string?
+
+	return nil
 }
 
 // Build builds a binary packet from the current data.
 func (m *MsgSysLogin) Build(bf *byteframe.ByteFrame) error {
 	panic("Not implemented")
-}
+}