mirror of
https://github.com/1Panel-dev/1Panel.git
synced 2024-11-25 11:39:16 +08:00
105 lines
2.5 KiB
Go
105 lines
2.5 KiB
Go
package terminal
|
|
|
|
import (
|
|
"context"
|
|
"encoding/base64"
|
|
"encoding/json"
|
|
"fmt"
|
|
"net"
|
|
"sync"
|
|
|
|
"github.com/1Panel-dev/1Panel/backend/global"
|
|
"github.com/gorilla/websocket"
|
|
"github.com/pkg/errors"
|
|
)
|
|
|
|
type ExecWsSession struct {
|
|
conn net.Conn
|
|
wsConn *websocket.Conn
|
|
|
|
writeMutex sync.Mutex
|
|
}
|
|
|
|
func NewExecConn(cols, rows int, wsConn *websocket.Conn, hijacked net.Conn, commands ...string) (*ExecWsSession, error) {
|
|
_, _ = hijacked.Write([]byte(fmt.Sprintf("stty cols %d rows %d && clear \r", cols, rows)))
|
|
for _, command := range commands {
|
|
_, _ = hijacked.Write([]byte(fmt.Sprintf("%s \r", command)))
|
|
}
|
|
|
|
return &ExecWsSession{
|
|
conn: hijacked,
|
|
wsConn: wsConn,
|
|
}, nil
|
|
}
|
|
|
|
func (sws *ExecWsSession) Start(ctx context.Context, quitChan chan bool) {
|
|
go sws.handleSlaveEvent(ctx, quitChan)
|
|
go sws.receiveWsMsg(ctx, quitChan)
|
|
}
|
|
|
|
func (sws *ExecWsSession) handleSlaveEvent(ctx context.Context, exitCh chan bool) {
|
|
defer setQuit(exitCh)
|
|
|
|
buffer := make([]byte, 1024)
|
|
for {
|
|
n, err := sws.conn.Read(buffer)
|
|
if err != nil && errors.Is(err, net.ErrClosed) {
|
|
return
|
|
}
|
|
|
|
if err := sws.masterWrite(buffer[:n]); err != nil {
|
|
if errors.Is(err, websocket.ErrCloseSent) {
|
|
return
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func (sws *ExecWsSession) masterWrite(data []byte) error {
|
|
sws.writeMutex.Lock()
|
|
defer sws.writeMutex.Unlock()
|
|
err := sws.wsConn.WriteMessage(websocket.TextMessage, data)
|
|
if err != nil {
|
|
return errors.Wrapf(err, "failed to write to master")
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (sws *ExecWsSession) receiveWsMsg(ctx context.Context, exitCh chan bool) {
|
|
wsConn := sws.wsConn
|
|
defer setQuit(exitCh)
|
|
for {
|
|
_, wsData, err := wsConn.ReadMessage()
|
|
if err != nil {
|
|
return
|
|
}
|
|
msgObj := wsMsg{}
|
|
_ = json.Unmarshal(wsData, &msgObj)
|
|
switch msgObj.Type {
|
|
case wsMsgResize:
|
|
if msgObj.Cols > 0 && msgObj.Rows > 0 {
|
|
sws.ResizeTerminal(msgObj.Rows, msgObj.Cols)
|
|
}
|
|
case wsMsgCmd:
|
|
decodeBytes, err := base64.StdEncoding.DecodeString(msgObj.Cmd)
|
|
if err != nil {
|
|
global.LOG.Errorf("websock cmd string base64 decoding failed, err: %v", err)
|
|
return
|
|
}
|
|
sws.sendWebsocketInputCommandToSshSessionStdinPipe(decodeBytes)
|
|
case wsMsgClose:
|
|
_, _ = sws.conn.Write([]byte("exit\r"))
|
|
return
|
|
}
|
|
}
|
|
}
|
|
|
|
func (sws *ExecWsSession) sendWebsocketInputCommandToSshSessionStdinPipe(cmdBytes []byte) {
|
|
_, _ = sws.conn.Write(cmdBytes)
|
|
}
|
|
|
|
func (sws *ExecWsSession) ResizeTerminal(rows int, cols int) {
|
|
_, _ = sws.conn.Write([]byte(fmt.Sprintf("stty cols %d rows %d && clear \r", cols, rows)))
|
|
}
|