complete proxy support

Signed-off-by: Vasiliy Tolstov <v.tolstov@selfip.ru>
This commit is contained in:
Василий Толстов 2017-06-13 16:20:35 +03:00
parent dcb1e176c4
commit 49c704bc67
7 changed files with 244 additions and 208 deletions

118
client.go
View File

@ -59,7 +59,6 @@ func (c *ClientConn) SetProtoVersion(pv string) {
func (c *ClientConn) SetEncodings(encs []EncodingType) error {
msg := &SetEncodings{
MsgType: SetEncodingsMsgType,
EncNum: uint16(len(encs)),
Encodings: encs,
}
@ -201,17 +200,16 @@ const (
// SetPixelFormat holds the wire format message.
type SetPixelFormat struct {
MsgType ClientMessageType
_ [3]byte // padding
PF PixelFormat // pixel-format
}
func (msg *SetPixelFormat) Type() ClientMessageType {
func (*SetPixelFormat) Type() ClientMessageType {
return SetPixelFormatMsgType
}
func (msg *SetPixelFormat) Write(c Conn) error {
if err := binary.Write(c, binary.BigEndian, msg.MsgType); err != nil {
if err := binary.Write(c, binary.BigEndian, msg.Type()); err != nil {
return err
}
@ -225,50 +223,51 @@ func (msg *SetPixelFormat) Write(c Conn) error {
c.SetColorMap(&ColorMap{})
}
return nil
return c.Flush()
}
func (msg *SetPixelFormat) Read(c Conn) error {
return binary.Read(c, binary.BigEndian, &msg)
func (*SetPixelFormat) Read(c Conn) (ClientMessage, error) {
msg := SetPixelFormat{}
if err := binary.Read(c, binary.BigEndian, &msg); err != nil {
return nil, err
}
return &msg, nil
}
// SetEncodings holds the wire format message, sans encoding-type field.
type SetEncodings struct {
MsgType ClientMessageType
_ [1]byte // padding
EncNum uint16 // number-of-encodings
Encodings []EncodingType
}
func (msg *SetEncodings) Type() ClientMessageType {
func (*SetEncodings) Type() ClientMessageType {
return SetEncodingsMsgType
}
func (msg *SetEncodings) Read(c Conn) error {
if err := binary.Read(c, binary.BigEndian, &msg.MsgType); err != nil {
return err
}
func (*SetEncodings) Read(c Conn) (ClientMessage, error) {
msg := SetEncodings{}
var pad [1]byte
if err := binary.Read(c, binary.BigEndian, &pad); err != nil {
return err
return nil, err
}
if err := binary.Read(c, binary.BigEndian, &msg.EncNum); err != nil {
return err
return nil, err
}
var enc EncodingType
for i := uint16(0); i < msg.EncNum; i++ {
if err := binary.Read(c, binary.BigEndian, &enc); err != nil {
return err
return nil, err
}
msg.Encodings = append(msg.Encodings, enc)
}
c.SetEncodings(msg.Encodings)
return nil
return &msg, nil
}
func (msg *SetEncodings) Write(c Conn) error {
if err := binary.Write(c, binary.BigEndian, msg.MsgType); err != nil {
if err := binary.Write(c, binary.BigEndian, msg.Type()); err != nil {
return err
}
@ -280,11 +279,9 @@ func (msg *SetEncodings) Write(c Conn) error {
if uint16(len(msg.Encodings)) > msg.EncNum {
msg.EncNum = uint16(len(msg.Encodings))
}
if err := binary.Write(c, binary.BigEndian, msg.EncNum); err != nil {
return err
}
for _, enc := range msg.Encodings {
if err := binary.Write(c, binary.BigEndian, enc); err != nil {
return err
@ -295,21 +292,27 @@ func (msg *SetEncodings) Write(c Conn) error {
// FramebufferUpdateRequest holds the wire format message.
type FramebufferUpdateRequest struct {
MsgType ClientMessageType
Inc uint8 // incremental
X, Y uint16 // x-, y-position
Width, Height uint16 // width, height
}
func (msg *FramebufferUpdateRequest) Type() ClientMessageType {
func (*FramebufferUpdateRequest) Type() ClientMessageType {
return FramebufferUpdateRequestMsgType
}
func (msg *FramebufferUpdateRequest) Read(c Conn) error {
return binary.Read(c, binary.BigEndian, &msg)
func (*FramebufferUpdateRequest) Read(c Conn) (ClientMessage, error) {
msg := FramebufferUpdateRequest{}
if err := binary.Read(c, binary.BigEndian, &msg); err != nil {
return nil, err
}
return &msg, nil
}
func (msg *FramebufferUpdateRequest) Write(c Conn) error {
if err := binary.Write(c, binary.BigEndian, msg.Type()); err != nil {
return err
}
if err := binary.Write(c, binary.BigEndian, msg); err != nil {
return err
}
@ -318,21 +321,27 @@ func (msg *FramebufferUpdateRequest) Write(c Conn) error {
// KeyEvent holds the wire format message.
type KeyEvent struct {
MsgType ClientMessageType // message-type
Down uint8 // down-flag
_ [2]byte // padding
Key Key // key
}
func (msg *KeyEvent) Type() ClientMessageType {
func (*KeyEvent) Type() ClientMessageType {
return KeyEventMsgType
}
func (msg *KeyEvent) Read(c Conn) error {
return binary.Read(c, binary.BigEndian, &msg)
func (*KeyEvent) Read(c Conn) (ClientMessage, error) {
msg := KeyEvent{}
if err := binary.Read(c, binary.BigEndian, &msg); err != nil {
return nil, err
}
return &msg, nil
}
func (msg *KeyEvent) Write(c Conn) error {
if err := binary.Write(c, binary.BigEndian, msg.Type()); err != nil {
return err
}
if err := binary.Write(c, binary.BigEndian, msg); err != nil {
return err
}
@ -341,20 +350,26 @@ func (msg *KeyEvent) Write(c Conn) error {
// PointerEventMessage holds the wire format message.
type PointerEvent struct {
MsgType ClientMessageType // message-type
Mask uint8 // button-mask
X, Y uint16 // x-, y-position
}
func (msg *PointerEvent) Type() ClientMessageType {
func (*PointerEvent) Type() ClientMessageType {
return PointerEventMsgType
}
func (msg *PointerEvent) Read(c Conn) error {
return binary.Read(c, binary.BigEndian, &msg)
func (*PointerEvent) Read(c Conn) (ClientMessage, error) {
msg := PointerEvent{}
if err := binary.Read(c, binary.BigEndian, &msg); err != nil {
return nil, err
}
return &msg, nil
}
func (msg *PointerEvent) Write(c Conn) error {
if err := binary.Write(c, binary.BigEndian, msg.Type()); err != nil {
return err
}
if err := binary.Write(c, binary.BigEndian, msg); err != nil {
return err
}
@ -363,40 +378,35 @@ func (msg *PointerEvent) Write(c Conn) error {
// ClientCutText holds the wire format message, sans the text field.
type ClientCutText struct {
MsgType ClientMessageType // message-type
_ [3]byte // padding
Length uint32 // length
Text []byte
}
func (msg *ClientCutText) Type() ClientMessageType {
func (*ClientCutText) Type() ClientMessageType {
return ClientCutTextMsgType
}
func (msg *ClientCutText) Read(c Conn) error {
if err := binary.Read(c, binary.BigEndian, &msg.MsgType); err != nil {
return err
}
func (*ClientCutText) Read(c Conn) (ClientMessage, error) {
msg := ClientCutText{}
var pad [3]byte
if err := binary.Read(c, binary.BigEndian, &pad); err != nil {
return err
return nil, err
}
if err := binary.Read(c, binary.BigEndian, &msg.Length); err != nil {
return err
return nil, err
}
text := make([]uint8, msg.Length)
if err := binary.Read(c, binary.BigEndian, &text); err != nil {
return err
msg.Text = make([]byte, msg.Length)
if err := binary.Read(c, binary.BigEndian, &msg.Text); err != nil {
return nil, err
}
msg.Text = text
return nil
return &msg, nil
}
func (msg *ClientCutText) Write(c Conn) error {
if err := binary.Write(c, binary.BigEndian, msg.MsgType); err != nil {
if err := binary.Write(c, binary.BigEndian, msg.Type()); err != nil {
return err
}
@ -457,25 +467,21 @@ func (c *ClientConn) Handle() error {
if err = binary.Read(c, binary.BigEndian, &messageType); err != nil {
return err
}
if err := c.UnreadByte(); err != nil {
return err
}
msg, ok := serverMessages[messageType]
if !ok {
return fmt.Errorf("unknown message-type: %v", messageType)
}
if err = msg.Read(c); err != nil {
parsedMsg, err := msg.Read(c)
if err != nil {
return err
}
if c.cfg.ServerMessageCh == nil {
continue
}
c.cfg.ServerMessageCh <- msg
c.cfg.ServerMessageCh <- parsedMsg
}
}
}()
wg.Wait()
fmt.Printf("tttt\n")
return err
}

View File

@ -45,19 +45,31 @@ type RawEncoding struct {
}
func (enc *RawEncoding) Write(c Conn, rect *Rectangle) error {
/*
for _, cl := range enc.Colors {
bytes, err := cl.Marshal()
buf := bytes.NewBuffer(nil)
defer buf.Reset()
n := 0
for _, c := range enc.Colors {
bytes, err := c.Marshal()
if err != nil {
return err
}
if err := binary.Write(c, binary.BigEndian, bytes); err != nil {
n += len(bytes)
if err := binary.Write(buf, binary.BigEndian, bytes); err != nil {
return err
}
/*
if _, err := buf.Write(bytes); err != nil {
return err
}
*/
return nil
}
fmt.Printf("w %d\n", n)
//return binary.Write(c, binary.BigEndian, buf.Bytes())
fmt.Printf("w %v\n", buf.Bytes())
_, err := c.Write(buf.Bytes())
return err
}
// Read implements the Encoding interface.
@ -68,12 +80,13 @@ func (enc *RawEncoding) Read(c Conn, rect *Rectangle) error {
bytesPerPixel := int(pf.BPP / 8)
n := rect.Area() * bytesPerPixel
data := make([]byte, n)
fmt.Printf("eeee\n")
fmt.Printf("r %d\n", n)
if err := binary.Read(c, binary.BigEndian, &data); err != nil {
return err
}
buf.Write(data)
defer buf.Reset()
fmt.Printf("r %v\n", buf.Bytes())
colors := make([]Color, rect.Area())
for y := uint16(0); y < rect.Height; y++ {
for x := uint16(0); x < rect.Width; x++ {
@ -94,6 +107,8 @@ func (*RawEncoding) Type() EncodingType { return EncRaw }
// DesktopSizePseudoEncoding represents a desktop size message from the server.
type DesktopSizePseudoEncoding struct{}
func (*DesktopSizePseudoEncoding) Type() EncodingType { return EncDesktopSizePseudo }
// Read implements the Encoding interface.
func (*DesktopSizePseudoEncoding) Read(c Conn, rect *Rectangle) error {
c.SetWidth(rect.Width)
@ -102,6 +117,6 @@ func (*DesktopSizePseudoEncoding) Read(c Conn, rect *Rectangle) error {
return nil
}
func (enc *DesktopSizePseudoEncoding) Write(c *ServerConn, rect *Rectangle) error {
func (enc *DesktopSizePseudoEncoding) Write(c Conn, rect *Rectangle) error {
return nil
}

View File

@ -14,8 +14,8 @@ func main() {
log.Fatalf("Error listen. %v", err)
}
schServer := make(chan vnc.ClientMessage)
schClient := make(chan vnc.ServerMessage)
schClient := make(chan vnc.ClientMessage)
schServer := make(chan vnc.ServerMessage)
scfg := &vnc.ServerConfig{
Width: 800,
@ -26,15 +26,13 @@ func main() {
ClientInitHandler: vnc.ServerClientInitHandler,
ServerInitHandler: vnc.ServerServerInitHandler,
Encodings: []vnc.Encoding{&vnc.RawEncoding{}},
PixelFormat: vnc.PixelFormat24bit,
ClientMessageCh: schServer,
ServerMessageCh: schClient,
PixelFormat: vnc.PixelFormat32bit,
ClientMessageCh: schClient,
ServerMessageCh: schServer,
ClientMessages: vnc.DefaultClientMessages,
DesktopName: []byte("vnc proxy"),
}
go vnc.Serve(context.Background(), ln, scfg)
c, err := net.Dial("tcp", "127.0.0.1:5944")
c, err := net.Dial("tcp", "127.0.0.1:5995")
if err != nil {
log.Fatalf("Error dial. %v", err)
}
@ -47,7 +45,7 @@ func main() {
SecurityHandlers: []vnc.SecurityHandler{&vnc.ClientAuthNone{}},
ClientInitHandler: vnc.ClientClientInitHandler,
ServerInitHandler: vnc.ClientServerInitHandler,
PixelFormat: vnc.PixelFormat24bit,
PixelFormat: vnc.PixelFormat32bit,
ClientMessageCh: cchClient,
ServerMessageCh: cchServer,
ServerMessages: vnc.DefaultServerMessages,
@ -58,54 +56,49 @@ func main() {
if err != nil {
log.Fatalf("Error dial. %v", err)
}
scfg.Width = cc.Width()
scfg.Height = cc.Height()
scfg.PixelFormat = cc.PixelFormat()
go vnc.Serve(context.Background(), ln, scfg)
defer cc.Close()
go cc.Handle()
for {
select {
case msg := <-cchClient:
switch msg.Type() {
default:
log.Printf("00 Received message type:%v msg:%v\n", msg.Type(), msg)
}
case msg := <-cchServer:
switch msg.Type() {
default:
log.Printf("01 Received message type:%v msg:%v\n", msg.Type(), msg)
schServer <- msg
}
case msg := <-schClient:
switch msg.Type() {
default:
log.Printf("10 Received message type:%v msg:%v\n", msg.Type(), msg)
}
case msg := <-schServer:
log.Printf("11 Received message type:%v msg:%v\n", msg.Type(), msg)
switch msg.Type() {
case vnc.SetEncodingsMsgType:
msg0 := &vnc.SetPixelFormat{
PF: *vnc.PixelFormat32bit,
}
cchClient <- msg0
encRaw := &vnc.RawEncoding{}
msg1 := &vnc.SetEncodings{
MsgType: vnc.SetEncodingsMsgType,
EncNum: 1,
Encodings: []vnc.EncodingType{encRaw.Type()},
}
if err := msg1.Write(cc); err != nil {
log.Fatalf("err %v\n", err)
}
cchClient <- msg1
/*
msg2 := &vnc.FramebufferUpdateRequest{
MsgType: vnc.FramebufferUpdateRequestMsgType,
Inc: 0,
X: 0,
Y: 0,
Width: cc.Width(),
Height: cc.Height(),
}
if err := msg2.Write(cc); err != nil {
log.Fatalf("err %v\n", err)
}
cchClient <- msg2
*/
case vnc.SetPixelFormatMsgType:
cchClient <- msg
default:
if err := msg.Write(cc); err != nil {
log.Fatalf("err %v\n", err)
}
cchClient <- msg
}
}
}

View File

@ -8,14 +8,14 @@ import (
// ClientMessage is the interface
type ClientMessage interface {
Type() ClientMessageType
Read(Conn) error
Read(Conn) (ClientMessage, error)
Write(Conn) error
}
// ServerMessage is the interface
type ServerMessage interface {
Type() ServerMessageType
Read(Conn) error
Read(Conn) (ServerMessage, error)
Write(Conn) error
}
@ -262,7 +262,13 @@ func ServerServerInitHandler(cfg *ServerConfig, c Conn) error {
}
func ClientClientInitHandler(cfg *ClientConfig, c Conn) error {
if err := binary.Write(c, binary.BigEndian, cfg.Exclusive); err != nil {
var shared uint8
if cfg.Exclusive {
shared = 0
} else {
shared = 1
}
if err := binary.Write(c, binary.BigEndian, shared); err != nil {
return err
}
return c.Flush()

View File

@ -114,19 +114,21 @@ func colorsToImage(x, y, width, height uint16, colors []Color) *image.RGBA64 {
// Marshal implements the Marshaler interface.
func (r *Rectangle) Write(c Conn) error {
if err := binary.Write(c, binary.BigEndian, r.X); err != nil {
var err error
fmt.Printf("w rect %#+v\n", r)
if err = binary.Write(c, binary.BigEndian, r.X); err != nil {
return err
}
if err := binary.Write(c, binary.BigEndian, r.Y); err != nil {
if err = binary.Write(c, binary.BigEndian, r.Y); err != nil {
return err
}
if err := binary.Write(c, binary.BigEndian, r.Width); err != nil {
if err = binary.Write(c, binary.BigEndian, r.Width); err != nil {
return err
}
if err := binary.Write(c, binary.BigEndian, r.Height); err != nil {
if err = binary.Write(c, binary.BigEndian, r.Height); err != nil {
return err
}
if err := binary.Write(c, binary.BigEndian, r.EncType); err != nil {
if err = binary.Write(c, binary.BigEndian, r.EncType); err != nil {
return err
}
@ -137,8 +139,8 @@ func (r *Rectangle) Write(c Conn) error {
}
func (r *Rectangle) Read(c Conn) error {
fmt.Printf("qqq\n")
var err error
if err = binary.Read(c, binary.BigEndian, &r.X); err != nil {
return err
}
@ -154,12 +156,11 @@ func (r *Rectangle) Read(c Conn) error {
if err = binary.Read(c, binary.BigEndian, &r.EncType); err != nil {
return err
}
fmt.Printf("rrrr %#+v\n", r)
switch r.EncType {
case EncRaw:
r.Enc = &RawEncoding{}
}
fmt.Printf("r rect %#+v\n", r)
return r.Enc.Read(c, r)
}

View File

@ -7,13 +7,11 @@ import (
"encoding/binary"
"fmt"
"io"
"math"
)
var (
PixelFormat8bit *PixelFormat = NewPixelFormat(8)
PixelFormat16bit *PixelFormat = NewPixelFormat(16)
PixelFormat24bit *PixelFormat = NewPixelFormat(24)
PixelFormat32bit *PixelFormat = NewPixelFormat(32)
)
@ -28,44 +26,70 @@ type PixelFormat struct {
_ [3]byte // padding
}
/*
qemu:
<field name="vnc.server_red_max" showname="Red maximum: 255" size="2" pos="76" show="255" value="00ff"/>
<field name="vnc.server_green_max" showname="Green maximum: 255" size="2" pos="78" show="255" value="00ff"/>
<field name="vnc.server_blue_max" showname="Blue maximum: 255" size="2" pos="80" show="255" value="00ff"/>
<field name="vnc.server_red_shift" showname="Red shift: 16" size="1" pos="82" show="16" value="10"/>
<field name="vnc.server_green_shift" showname="Green shift: 8" size="1" pos="83" show="8" value="08"/>
<field name="vnc.server_blue_shift" showname="Blue shift: 0" size="1" pos="84" show="0" value="00"/>
*/
/*
<field name="vnc.server_red_max" showname="Red maximum: 65535" size="2" pos="76" show="65535" value="ffff"/>
<field name="vnc.server_green_max" showname="Green maximum: 65535" size="2" pos="78" show="65535" value="ffff"/>
<field name="vnc.server_blue_max" showname="Blue maximum: 65535" size="2" pos="80" show="65535" value="ffff"/>
<field name="vnc.server_red_shift" showname="Red shift: 0" size="1" pos="82" show="0" value="00"/>
<field name="vnc.server_green_shift" showname="Green shift: 8" size="1" pos="83" show="8" value="08"/>
<field name="vnc.server_blue_shift" showname="Blue shift: 16" size="1" pos="84" show="16" value="10"/>
*/
const pixelFormatLen = 16
// NewPixelFormat returns a populated PixelFormat structure.
func NewPixelFormat(bpp uint8) *PixelFormat {
bigEndian := uint8(0)
rgbMax := uint16(math.Exp2(float64(bpp))) - 1
// rgbMax := uint16(math.Exp2(float64(bpp))) - 1
rMax := uint16(255)
gMax := uint16(255)
bMax := uint16(255)
var (
tc = uint8(1)
rs, gs, bs uint8
depth uint8
)
switch bpp {
case 8:
tc = 0
depth = 8
rs, gs, bs = 0, 0, 0
case 16:
depth = 16
rs, gs, bs = 0, 4, 8
case 32:
rs, gs, bs = 0, 8, 16
depth = 24
// rs, gs, bs = 0, 8, 16
rs, gs, bs = 16, 8, 0
}
return &PixelFormat{bpp, bpp, bigEndian, tc, rgbMax, rgbMax, rgbMax, rs, gs, bs, [3]byte{}}
return &PixelFormat{bpp, depth, bigEndian, tc, rMax, gMax, bMax, rs, gs, bs, [3]byte{}}
}
// Marshal implements the Marshaler interface.
func (pf *PixelFormat) Marshal() ([]byte, error) {
// Validation checks.
switch pf.BPP {
case 8, 16, 24, 32:
case 8, 16, 32:
default:
return nil, fmt.Errorf("Invalid BPP value %v; must be 8, 16, 24 or 32.", pf.BPP)
return nil, fmt.Errorf("Invalid BPP value %v; must be 8, 16, or 32.", pf.BPP)
}
if pf.Depth < pf.BPP {
return nil, fmt.Errorf("Invalid Depth value %v; cannot be < BPP", pf.Depth)
}
switch pf.Depth {
case 8, 16, 24, 32:
case 8, 16, 32:
default:
return nil, fmt.Errorf("Invalid Depth value %v; must be 8, 16, 24 or 32.", pf.Depth)
return nil, fmt.Errorf("Invalid Depth value %v; must be 8, 16, or 32.", pf.Depth)
}
// Create the slice of bytes

119
server.go
View File

@ -137,43 +137,43 @@ const (
// FramebufferUpdate holds a FramebufferUpdate wire format message.
type FramebufferUpdate struct {
MsgType ServerMessageType
_ [1]byte // pad
NumRect uint16 // number-of-rectangles
Rects []Rectangle // rectangles
Rects []*Rectangle // rectangles
}
func (msg *FramebufferUpdate) Type() ServerMessageType {
func (*FramebufferUpdate) Type() ServerMessageType {
return FramebufferUpdateMsgType
}
func (msg *FramebufferUpdate) Read(c Conn) error {
if err := binary.Read(c, binary.BigEndian, msg.MsgType); err != nil {
return err
}
fmt.Printf("qqqqq\n")
func (*FramebufferUpdate) Read(c Conn) (ServerMessage, error) {
msg := FramebufferUpdate{}
var pad [1]byte
if err := binary.Read(c, binary.BigEndian, &pad); err != nil {
return err
return nil, err
}
if err := binary.Read(c, binary.BigEndian, msg.NumRect); err != nil {
return err
if err := binary.Read(c, binary.BigEndian, &msg.NumRect); err != nil {
return nil, err
}
msg.Rects = make([]Rectangle, msg.NumRect)
fmt.Printf("%#+v\n", msg)
for i := uint16(0); i < msg.NumRect; i++ {
rect := NewRectangle()
rect := &Rectangle{}
if err := rect.Read(c); err != nil {
return err
return nil, err
}
msg.Rects = append(msg.Rects, *rect)
msg.Rects = append(msg.Rects, rect)
}
return nil
fmt.Printf("r fb %d %d %v\n", msg.NumRect, uint16(len(msg.Rects)), msg.Rects)
if msg.NumRect != uint16(len(msg.Rects)) {
panic("rects not equal")
}
return &msg, nil
}
func (msg *FramebufferUpdate) Write(c Conn) error {
if err := binary.Write(c, binary.BigEndian, msg.MsgType); err != nil {
fmt.Printf("w fb %d %d %v\n", msg.NumRect, uint16(len(msg.Rects)), msg.Rects)
if err := binary.Write(c, binary.BigEndian, msg.Type()); err != nil {
return err
}
var pad [1]byte
@ -341,22 +341,19 @@ func (c *ServerConn) Handle() error {
if err := binary.Read(c, binary.BigEndian, &messageType); err != nil {
return err
}
if err := c.UnreadByte(); err != nil {
return err
}
fmt.Printf("srv r %s\n", messageType)
msg, ok := clientMessages[messageType]
if !ok {
return fmt.Errorf("unsupported message-type: %v", messageType)
}
if err := msg.Read(c); err != nil {
parsedMsg, err := msg.Read(c)
fmt.Printf("srv r %#+v\n", parsedMsg)
if err != nil {
fmt.Printf("srv err %s\n", err.Error())
return err
}
c.cfg.ClientMessageCh <- msg
c.cfg.ClientMessageCh <- parsedMsg
}
}
}()
@ -366,40 +363,36 @@ func (c *ServerConn) Handle() error {
}
type ServerCutText struct {
MsgType ServerMessageType
_ [1]byte
Length uint32
Text []byte
}
func (msg *ServerCutText) Type() ServerMessageType {
func (*ServerCutText) Type() ServerMessageType {
return ServerCutTextMsgType
}
func (msg *ServerCutText) Read(c Conn) error {
if err := binary.Read(c, binary.BigEndian, msg.MsgType); err != nil {
return err
}
func (*ServerCutText) Read(c Conn) (ServerMessage, error) {
msg := ServerCutText{}
var pad [1]byte
if err := binary.Read(c, binary.BigEndian, &pad); err != nil {
return err
return nil, err
}
var length uint32
if err := binary.Read(c, binary.BigEndian, &length); err != nil {
return err
if err := binary.Read(c, binary.BigEndian, &msg.Length); err != nil {
return nil, err
}
text := make([]byte, length)
if err := binary.Read(c, binary.BigEndian, &text); err != nil {
return err
msg.Text = make([]byte, msg.Length)
if err := binary.Read(c, binary.BigEndian, &msg.Text); err != nil {
return nil, err
}
msg.Text = text
return nil
return &msg, nil
}
func (msg *ServerCutText) Write(c Conn) error {
if err := binary.Write(c, binary.BigEndian, msg.MsgType); err != nil {
if err := binary.Write(c, binary.BigEndian, msg.Type()); err != nil {
return err
}
var pad [1]byte
@ -407,6 +400,9 @@ func (msg *ServerCutText) Write(c Conn) error {
return err
}
if msg.Length < uint32(len(msg.Text)) {
msg.Length = uint32(len(msg.Text))
}
if err := binary.Write(c, binary.BigEndian, msg.Length); err != nil {
return err
}
@ -417,52 +413,47 @@ func (msg *ServerCutText) Write(c Conn) error {
return nil
}
type Bell struct {
MsgType ServerMessageType
}
type Bell struct{}
func (msg *Bell) Type() ServerMessageType {
func (*Bell) Type() ServerMessageType {
return BellMsgType
}
func (msg *Bell) Read(c Conn) error {
return binary.Read(c, binary.BigEndian, msg.MsgType)
func (*Bell) Read(c Conn) (ServerMessage, error) {
return &Bell{}, nil
}
func (msg *Bell) Write(c Conn) error {
if err := binary.Write(c, binary.BigEndian, msg.MsgType); err != nil {
if err := binary.Write(c, binary.BigEndian, msg.Type()); err != nil {
return err
}
return c.Flush()
}
type SetColorMapEntries struct {
MsgType ServerMessageType
_ [1]byte
FirstColor uint16
ColorsNum uint16
Colors []Color
}
func (msg *SetColorMapEntries) Type() ServerMessageType {
func (*SetColorMapEntries) Type() ServerMessageType {
return SetColorMapEntriesMsgType
}
func (msg *SetColorMapEntries) Read(c Conn) error {
if err := binary.Read(c, binary.BigEndian, msg.MsgType); err != nil {
return err
}
func (*SetColorMapEntries) Read(c Conn) (ServerMessage, error) {
msg := SetColorMapEntries{}
var pad [1]byte
if err := binary.Read(c, binary.BigEndian, &pad); err != nil {
return err
return nil, err
}
if err := binary.Read(c, binary.BigEndian, msg.FirstColor); err != nil {
return err
if err := binary.Read(c, binary.BigEndian, &msg.FirstColor); err != nil {
return nil, err
}
if err := binary.Read(c, binary.BigEndian, msg.ColorsNum); err != nil {
return err
if err := binary.Read(c, binary.BigEndian, &msg.ColorsNum); err != nil {
return nil, err
}
msg.Colors = make([]Color, msg.ColorsNum)
@ -471,16 +462,16 @@ func (msg *SetColorMapEntries) Read(c Conn) error {
for i := uint16(0); i < msg.ColorsNum; i++ {
color := &msg.Colors[i]
if err := binary.Read(c, binary.BigEndian, &color); err != nil {
return err
return nil, err
}
colorMap[msg.FirstColor+i] = *color
}
c.SetColorMap(colorMap)
return nil
return &msg, nil
}
func (msg *SetColorMapEntries) Write(c Conn) error {
if err := binary.Write(c, binary.BigEndian, msg.MsgType); err != nil {
if err := binary.Write(c, binary.BigEndian, msg.Type()); err != nil {
return err
}
var pad [1]byte