/
Packet8ALayer.go
180 lines (167 loc) · 4.71 KB
/
Packet8ALayer.go
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package peer
import (
"fmt"
)
// Packet8ALayer represents ID_SUBMIT_TICKET - client -> server
type Packet8ALayer struct {
PlayerID int64
ClientTicket string
TicketHash uint32
LuauResponse uint32
DataModelHash string
// Always 36?
ProtocolVersion uint32
SecurityKey string
Platform string
RobloxProductName string
SessionID string
GoldenHash uint32
}
func (stream *extendedReader) DecodePacket8ALayer(reader PacketReader, layers *PacketLayers) (RakNetPacket, error) {
layer := &Packet8ALayer{}
lenBytes := uint(layers.SplitPacket.RealLength) - 1 // -1 for packet id
key := reader.Context().GenerateSubmitTicketKey()
layers.Root.Logger.Println("using ticket key", string(key[:]))
thisStream, err := stream.aesDecrypt(int(lenBytes), reader.Context().GenerateSubmitTicketKey())
if err != nil {
return layer, err
}
playerID, err := thisStream.readVarsint64()
if err != nil {
return layer, err
}
layer.PlayerID = playerID
layers.Root.Logger.Println("playerid", playerID)
layer.ClientTicket, err = thisStream.readVarLengthString()
if err != nil {
return layer, err
}
layers.Root.Logger.Println("ticket", layer.ClientTicket)
layer.DataModelHash, err = thisStream.readVarLengthString()
if err != nil {
return layer, err
}
layers.Root.Logger.Println("dmhash", layer.DataModelHash)
layer.ProtocolVersion, err = thisStream.readUint32BE()
if err != nil {
return layer, err
}
layers.Root.Logger.Println("protvr", layer.ProtocolVersion)
layer.SecurityKey, err = thisStream.readVarLengthString()
if err != nil {
return layer, err
}
layers.Root.Logger.Println("key", layer.SecurityKey)
layer.Platform, err = thisStream.readVarLengthString()
if err != nil {
return layer, err
}
layers.Root.Logger.Println("platform", layer.Platform)
layer.RobloxProductName, err = thisStream.readVarLengthString()
if err != nil {
return layer, err
}
layers.Root.Logger.Println("prodname", layer.RobloxProductName)
if !reader.Context().IsStudio {
hash, err := thisStream.readUintUTF8()
if err != nil {
return layer, err
}
layer.TicketHash = hash
layers.Root.Logger.Println("hash", layer.TicketHash)
hash2, err := thisStream.readUintUTF8()
if err != nil {
return layer, err
}
hash3, err := thisStream.readSintUTF8()
if err != nil {
return layer, err
}
layer.LuauResponse = uint32(hash3)
layers.Root.Logger.Println("hash2", hash2, "badfood check success: ", hash2 == layer.TicketHash-0xbadf00d)
layers.Root.Logger.Println("win10 check: ", hash == Win10Settings().GenerateTicketHash(layer.ClientTicket))
layers.Root.Logger.Println("win10 check luau: ", hash3 == int32(Win10Settings().GenerateLuauResponse(layer.ClientTicket)))
}
layer.SessionID, err = thisStream.readVarLengthString()
if err != nil {
return layer, err
}
layers.Root.Logger.Println("sessid", layer.SessionID)
layer.GoldenHash, err = thisStream.readUint32BE()
if err != nil {
return layer, err
}
layers.Root.Logger.Println("goldhash", layer.GoldenHash)
return layer, nil
}
// Serialize implements RakNetPacket.Serialize
func (layer *Packet8ALayer) Serialize(writer PacketWriter, stream *extendedWriter) error {
var err error
rawStream := stream.aesEncrypt(writer.Context().GenerateSubmitTicketKey())
err = rawStream.writeVarsint64(layer.PlayerID)
if err != nil {
return err
}
err = rawStream.writeVarLengthString(layer.ClientTicket)
if err != nil {
return err
}
err = rawStream.writeVarLengthString(layer.DataModelHash)
if err != nil {
return err
}
err = rawStream.writeUint32BE(layer.ProtocolVersion)
if err != nil {
return err
}
err = rawStream.writeVarLengthString(layer.SecurityKey)
if err != nil {
return err
}
err = rawStream.writeVarLengthString(layer.Platform)
if err != nil {
return err
}
err = rawStream.writeVarLengthString(layer.RobloxProductName)
if err != nil {
return err
}
if !writer.Context().IsStudio {
err = rawStream.writeVarint64(uint64(layer.TicketHash))
if err != nil {
return err
}
err = rawStream.writeVarint64(uint64(layer.TicketHash - 0xbadf00d))
if err != nil {
return err
}
err = rawStream.writeVarsint32(int32(layer.LuauResponse))
if err != nil {
return err
}
}
err = rawStream.writeVarLengthString(layer.SessionID)
if err != nil {
return err
}
err = rawStream.writeUint32BE(layer.GoldenHash)
if err != nil {
return err
}
err = rawStream.Close()
if err != nil {
return err
}
return err
}
func (layer *Packet8ALayer) String() string {
return fmt.Sprintf("ID_SUBMIT_TICKET: %s", layer.Platform)
}
// TypeString implements RakNetPacket.TypeString()
func (Packet8ALayer) TypeString() string {
return "ID_SUBMIT_TICKET"
}
// Type implements RakNetPacket.Type()
func (Packet8ALayer) Type() byte {
return 0x8A
}