mirror of
https://github.com/CPunch/gopenfusion.git
synced 2024-11-12 19:20:06 +00:00
can now respond to packets
This commit is contained in:
parent
34ce9a7420
commit
115005b6a3
@ -76,6 +76,15 @@ const (
|
||||
EQUIP_SLOT_HAND_EX = 7
|
||||
EQUIP_SLOT_VEHICLE = 8
|
||||
|
||||
LOGIN_FAIL_DB_ERROR = 0
|
||||
LOGIN_FAIL_ID_ERROR = 1
|
||||
LOGIN_FAIL_ID_PW_MATCH_ERROR = 2
|
||||
LOGIN_FAIL_DUP_ERROR = 3
|
||||
LOGIN_FAIL_VERSION_ERROR = 6
|
||||
LOGIN_FAIL_NOT_BETA_ERROR = 7
|
||||
LOGIN_FAIL_CN_SERVICE_ERROR = 8
|
||||
LOGIN_FAIL_EULA_ERROR = 9
|
||||
|
||||
WPN_EQUIP_TYPE_NONE = 0
|
||||
WPN_EQUIP_TYPE_OH_BLADE = 1
|
||||
WPN_EQUIP_TYPE_OH_CLUB = 2
|
||||
|
45
protocol/encrypt.go
Normal file
45
protocol/encrypt.go
Normal file
@ -0,0 +1,45 @@
|
||||
package protocol
|
||||
|
||||
const (
|
||||
E_KEY = "m@rQn~W#"
|
||||
KEY_LENGTH = 8
|
||||
)
|
||||
|
||||
func encrypt_byte_change_A(ERSize int, data []byte) int {
|
||||
var num, num2, num3 int
|
||||
|
||||
for num+ERSize <= len(data) {
|
||||
num4 := num + num3
|
||||
num5 := num + (ERSize - 1 - num3)
|
||||
|
||||
b := data[num4]
|
||||
data[num4] = data[num5]
|
||||
data[num5] = b
|
||||
num += ERSize
|
||||
num3++
|
||||
if num3 > ERSize/2 {
|
||||
num3 = 0
|
||||
}
|
||||
}
|
||||
|
||||
num2 = ERSize - (num + ERSize - len(data))
|
||||
return num + num2
|
||||
}
|
||||
|
||||
func xorData(buff, key []byte, size int) {
|
||||
for i := 0; i < size; i++ {
|
||||
buff[i] ^= key[i%KEY_LENGTH]
|
||||
}
|
||||
}
|
||||
|
||||
func EncryptData(buff, key []byte) {
|
||||
ERSize := len(buff)%(KEY_LENGTH/2+1)*2 + KEY_LENGTH
|
||||
xorData(buff, key, len(buff))
|
||||
encrypt_byte_change_A(ERSize, buff)
|
||||
}
|
||||
|
||||
func DecryptData(buff, key []byte) {
|
||||
ERSize := len(buff)%(KEY_LENGTH/2+1)*2 + KEY_LENGTH
|
||||
size := encrypt_byte_change_A(ERSize, buff)
|
||||
xorData(buff, key, size)
|
||||
}
|
@ -23,8 +23,12 @@ type Packet struct {
|
||||
const PACK_ALIGN = 4
|
||||
|
||||
func NewPacket(sz int) *Packet {
|
||||
newBuf := make([]byte, sz)
|
||||
return &Packet{ByteOrder: binary.LittleEndian, Buf: newBuf}
|
||||
pkt := &Packet{
|
||||
ByteOrder: binary.LittleEndian,
|
||||
Buf: make([]byte, sz),
|
||||
cursor: 0,
|
||||
}
|
||||
return pkt
|
||||
}
|
||||
|
||||
func (pkt *Packet) ResetCursor() {
|
||||
@ -44,6 +48,10 @@ func (pkt *Packet) writeRaw(data []byte) {
|
||||
|
||||
func (pkt *Packet) Write(data []byte) {
|
||||
pkt.writeRaw(data)
|
||||
|
||||
if len(pkt.Buf) > CN_PACKET_BUFFER_SIZE {
|
||||
panic(fmt.Errorf("Failed to write to packet, invalid size!"))
|
||||
}
|
||||
}
|
||||
|
||||
func (pkt *Packet) writeByte(data byte) {
|
||||
@ -59,7 +67,7 @@ func (pkt *Packet) readRaw(sz int) []byte {
|
||||
|
||||
func (pkt *Packet) Read(sz int) []byte {
|
||||
if sz > len(pkt.Buf) {
|
||||
panic("Failed to read from packet, invalid size!")
|
||||
panic(fmt.Errorf("Failed to read from packet, invalid size!"))
|
||||
}
|
||||
|
||||
return pkt.readRaw(sz)
|
||||
@ -70,6 +78,8 @@ func (pkt *Packet) readByte() byte {
|
||||
}
|
||||
|
||||
func (pkt *Packet) encodeStructField(field reflect.StructField, value reflect.Value) {
|
||||
log.Printf("Encoding '%s', current cursor: %d", field.Name, len(pkt.Buf))
|
||||
|
||||
switch field.Type.Kind() {
|
||||
case reflect.String: // all strings in fusionfall packets are encoded as utf16, we'll need to encode it
|
||||
sz, err := strconv.Atoi(field.Tag.Get("size"))
|
||||
@ -77,24 +87,34 @@ func (pkt *Packet) encodeStructField(field reflect.StructField, value reflect.Va
|
||||
panic(fmt.Errorf("Failed to grab string 'size' tag!!"))
|
||||
}
|
||||
|
||||
sz *= 2
|
||||
buf16 := utf16.Encode([]rune(value.String()))
|
||||
buf := *(*[]byte)(unsafe.Pointer(&buf16))
|
||||
|
||||
// len(buf16) needs to be the same size as sz
|
||||
if len(buf16) > sz {
|
||||
// len(buf) needs to be the same size as sz
|
||||
if len(buf) > sz {
|
||||
// truncate
|
||||
buf16 = buf16[:sz]
|
||||
buf = buf[:sz]
|
||||
} else {
|
||||
// grow
|
||||
for len(buf16) < sz {
|
||||
buf16 = append(buf16, 0)
|
||||
for len(buf) < sz {
|
||||
buf = append(buf, 0)
|
||||
}
|
||||
}
|
||||
|
||||
buf := *(*[]byte)(unsafe.Pointer(&buf16))
|
||||
log.Printf("sending %d", len(buf))
|
||||
pkt.Write(buf)
|
||||
default:
|
||||
pkt.Encode(value.Addr().Interface())
|
||||
}
|
||||
|
||||
// write padding bytes
|
||||
pad, err := strconv.Atoi(field.Tag.Get("pad"))
|
||||
if err == nil {
|
||||
for i := 0; i < pad; i++ {
|
||||
pkt.writeByte(0)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (pkt *Packet) Encode(data interface{}) {
|
||||
@ -150,14 +170,6 @@ func (pkt *Packet) Encode(data interface{}) {
|
||||
func (pkt *Packet) decodeStructField(field reflect.StructField, value reflect.Value) {
|
||||
log.Printf("Decoding '%s', current cursor: %d", field.Name, pkt.cursor)
|
||||
|
||||
// read padding bytes
|
||||
offset, err := strconv.Atoi(field.Tag.Get("offset"))
|
||||
if err == nil {
|
||||
for pkt.cursor < offset {
|
||||
pkt.readByte()
|
||||
}
|
||||
}
|
||||
|
||||
switch field.Type.Kind() {
|
||||
case reflect.String: // all strings in fusionfall packets are encoded as utf16, we'll need to decode it
|
||||
sz, err := strconv.Atoi(field.Tag.Get("size"))
|
||||
@ -186,6 +198,14 @@ func (pkt *Packet) decodeStructField(field reflect.StructField, value reflect.Va
|
||||
default:
|
||||
pkt.Decode(value.Addr().Interface())
|
||||
}
|
||||
|
||||
// read padding bytes
|
||||
pad, err := strconv.Atoi(field.Tag.Get("pad"))
|
||||
if err == nil {
|
||||
for i := 0; i < pad; i++ {
|
||||
pkt.readByte()
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (pkt *Packet) Decode(data interface{}) {
|
||||
|
@ -10,3 +10,8 @@ type SP_CL2LS_REQ_LOGIN struct {
|
||||
Cookie_TEGid [64]uint8
|
||||
Cookie_authid [255]uint8
|
||||
}
|
||||
|
||||
type SP_LS2CL_REP_LOGIN_FAIL struct {
|
||||
ErrorCode int32
|
||||
ID string `size:"33" pad:"2"`
|
||||
}
|
||||
|
91
server/client.go
Normal file
91
server/client.go
Normal file
@ -0,0 +1,91 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"encoding/binary"
|
||||
"fmt"
|
||||
"log"
|
||||
"net"
|
||||
|
||||
"github.com/CPunch/GoFusion/protocol"
|
||||
)
|
||||
|
||||
type Client struct {
|
||||
server *Server
|
||||
conn net.Conn
|
||||
key []byte
|
||||
}
|
||||
|
||||
func newClient(server *Server, conn net.Conn, key []byte) *Client {
|
||||
return &Client{
|
||||
server: server,
|
||||
conn: conn,
|
||||
key: key,
|
||||
}
|
||||
}
|
||||
|
||||
func (client *Client) Send(data interface{}, typeID uint32) {
|
||||
tmp := make([]byte, 4)
|
||||
|
||||
// encode
|
||||
pkt := protocol.NewPacket(0)
|
||||
pkt.Encode(data)
|
||||
|
||||
// write packet size
|
||||
log.Printf("Sending %#v, sizeof: %d", data, len(pkt.Buf))
|
||||
binary.LittleEndian.PutUint32(tmp, uint32(len(pkt.Buf)+4))
|
||||
if _, err := client.conn.Write(tmp); err != nil {
|
||||
panic(fmt.Errorf("[FATAL] failed to write packet size! %v", err))
|
||||
}
|
||||
|
||||
// prepend the typeID to the packet body
|
||||
binary.LittleEndian.PutUint32(tmp, uint32(typeID))
|
||||
pkt.Buf = append(tmp, pkt.Buf...)
|
||||
|
||||
// encrypt body
|
||||
protocol.EncryptData(pkt.Buf[:], client.key)
|
||||
|
||||
// write packet body
|
||||
if _, err := client.conn.Write(pkt.Buf); err != nil {
|
||||
panic(fmt.Errorf("[FATAL] failed to write packet body! %v", err))
|
||||
}
|
||||
log.Printf("sent!")
|
||||
}
|
||||
|
||||
func (client *Client) ClientHandler() {
|
||||
defer func() {
|
||||
client.conn.Close()
|
||||
client.server.unregister <- client
|
||||
}()
|
||||
|
||||
tmp := make([]byte, 4)
|
||||
for {
|
||||
// read packet size
|
||||
if _, err := client.conn.Read(tmp); err != nil {
|
||||
panic(fmt.Errorf("[FATAL] failed to read packet size! %v", err))
|
||||
}
|
||||
sz := int(binary.LittleEndian.Uint32(tmp))
|
||||
|
||||
// read packet body
|
||||
pkt := protocol.NewPacket(sz)
|
||||
if _, err := client.conn.Read(pkt.Buf); err != nil {
|
||||
panic(fmt.Errorf("[FATAL] failed to read packet body! %v", err))
|
||||
}
|
||||
|
||||
// decrypt && grab typeID
|
||||
protocol.DecryptData(pkt.Buf[:], client.key)
|
||||
typeID := int(binary.LittleEndian.Uint32(pkt.Read(4)))
|
||||
|
||||
log.Printf("Got packet ID: %x, with a sizeof: %d\n", typeID, len(pkt.Buf))
|
||||
pkt.ResetCursor()
|
||||
switch typeID {
|
||||
case protocol.P_CL2LS_REQ_LOGIN:
|
||||
var loginPkt protocol.SP_CL2LS_REQ_LOGIN
|
||||
pkt.Decode(&loginPkt)
|
||||
log.Printf("Got packet: %#v", loginPkt)
|
||||
|
||||
client.Send(&protocol.SP_LS2CL_REP_LOGIN_FAIL{ErrorCode: protocol.LOGIN_FAIL_VERSION_ERROR, ID: loginPkt.ID}, protocol.P_LS2CL_REP_LOGIN_FAIL)
|
||||
default:
|
||||
log.Printf("[WARN] unsupported packet ID: %x\n", typeID)
|
||||
}
|
||||
}
|
||||
}
|
109
server/server.go
109
server/server.go
@ -1,7 +1,6 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"encoding/binary"
|
||||
"fmt"
|
||||
"log"
|
||||
"net"
|
||||
@ -9,93 +8,49 @@ import (
|
||||
"github.com/CPunch/GoFusion/protocol"
|
||||
)
|
||||
|
||||
const (
|
||||
E_KEY = "m@rQn~W#"
|
||||
KEY_LENGTH = 8
|
||||
)
|
||||
|
||||
func encrypt_byte_change_A(ERSize int, data []byte) int {
|
||||
var num, num2, num3 int
|
||||
|
||||
for num+ERSize <= len(data) {
|
||||
num4 := num + num3
|
||||
num5 := num + (ERSize - 1 - num3)
|
||||
|
||||
b := data[num4]
|
||||
data[num4] = data[num5]
|
||||
data[num5] = b
|
||||
num += ERSize
|
||||
num3++
|
||||
if num3 > ERSize/2 {
|
||||
num3 = 0
|
||||
}
|
||||
}
|
||||
|
||||
num2 = ERSize - (num + ERSize - len(data))
|
||||
return num + num2
|
||||
type Server struct {
|
||||
listener net.Listener
|
||||
clients map[*Client]bool
|
||||
unregister chan *Client
|
||||
}
|
||||
|
||||
func xorData(buff, key []byte, size int) {
|
||||
for i := 0; i < size; i++ {
|
||||
buff[i] ^= key[i%KEY_LENGTH]
|
||||
func newServer() *Server {
|
||||
listener, err := net.Listen("tcp", ":23000")
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
return &Server{
|
||||
listener: listener,
|
||||
clients: make(map[*Client]bool),
|
||||
unregister: make(chan *Client),
|
||||
}
|
||||
}
|
||||
|
||||
func decryptData(buff, key []byte) {
|
||||
ERSize := len(buff)%(KEY_LENGTH/2+1)*2 + KEY_LENGTH
|
||||
size := encrypt_byte_change_A(ERSize, buff)
|
||||
xorData(buff, key, size)
|
||||
}
|
||||
func (server *Server) Start() {
|
||||
log.Print("Server hosted on 127.0.0.1:23000")
|
||||
|
||||
func handle(conn net.Conn) {
|
||||
defer func() {
|
||||
conn.Close()
|
||||
}()
|
||||
|
||||
tmp := make([]byte, 4)
|
||||
for {
|
||||
// grab packet size
|
||||
if _, err := conn.Read(tmp); err != nil {
|
||||
panic(fmt.Errorf("[FATAL] failed to read packet size! %v", err))
|
||||
}
|
||||
|
||||
sz := int(binary.LittleEndian.Uint32(tmp))
|
||||
pkt := protocol.NewPacket(sz)
|
||||
|
||||
if _, err := conn.Read(pkt.Buf); err != nil {
|
||||
panic(fmt.Errorf("[FATAL] failed to read packet body! %v", err))
|
||||
}
|
||||
|
||||
decryptData(pkt.Buf, []byte(E_KEY))
|
||||
typeID := int(binary.LittleEndian.Uint32(pkt.Read(4)))
|
||||
sizeof := len(pkt.Buf)
|
||||
log.Printf("Got packet ID: %x\n", typeID)
|
||||
|
||||
pkt.ResetCursor()
|
||||
switch typeID {
|
||||
case protocol.P_CL2LS_REQ_LOGIN:
|
||||
var loginPkt protocol.SP_CL2LS_REQ_LOGIN
|
||||
pkt.Decode(&loginPkt)
|
||||
log.Printf("Got packet: %#v, with a sizeof: %d", loginPkt, sizeof)
|
||||
select {
|
||||
case client := <-server.unregister:
|
||||
delete(server.clients, client)
|
||||
fmt.Printf("Client %p disconnected\n", client)
|
||||
default:
|
||||
log.Printf("[WARN] unsupported packet ID: %x\n", typeID)
|
||||
conn, err := server.listener.Accept()
|
||||
if err != nil {
|
||||
log.Println("Connection error: ", err)
|
||||
return
|
||||
}
|
||||
|
||||
client := newClient(server, conn, []byte(protocol.E_KEY))
|
||||
server.clients[client] = true
|
||||
go client.ClientHandler()
|
||||
fmt.Printf("Client %p connected\n", client)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func main() {
|
||||
server, err := net.Listen("tcp", ":23000")
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
log.Print("Server hosted on 127.0.0.1:23000")
|
||||
for {
|
||||
conn, err := server.Accept()
|
||||
if err != nil {
|
||||
log.Println("Connection error: ", err)
|
||||
return
|
||||
}
|
||||
go handle(conn)
|
||||
}
|
||||
server := newServer()
|
||||
server.Start()
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user