49 lines
944 B
Go
49 lines
944 B
Go
package main
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import (
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"fmt"
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"io"
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"log"
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"os"
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"os/exec"
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"syscall"
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"unsafe"
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"github.com/gliderlabs/ssh"
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"github.com/kr/pty"
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)
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func setWinsize(f *os.File, w, h int) {
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syscall.Syscall(syscall.SYS_IOCTL, f.Fd(), uintptr(syscall.TIOCSWINSZ),
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uintptr(unsafe.Pointer(&struct{ h, w, x, y uint16 }{uint16(h), uint16(w), 0, 0})))
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}
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func main() {
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ssh.Handle(func(s ssh.Session) {
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cmd := exec.Command("top")
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ptyReq, winCh, isPty := s.Pty()
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if isPty {
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cmd.Env = append(cmd.Env, fmt.Sprintf("TERM=%s", ptyReq.Term))
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f, err := pty.Start(cmd)
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if err != nil {
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panic(err)
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}
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go func() {
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for win := range winCh {
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setWinsize(f, win.Width, win.Height)
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}
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}()
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go func() {
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io.Copy(f, s) // stdin
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}()
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io.Copy(s, f) // stdout
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} else {
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io.WriteString(s, "No PTY requested.\n")
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s.Exit(1)
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}
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})
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log.Println("starting ssh server on port 2222...")
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log.Fatal(ssh.ListenAndServe(":2222", nil))
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}
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