/
main.go
125 lines (112 loc) 路 2.77 KB
/
main.go
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package main
// An example Bubble Tea server. This will put an ssh session into alt screen
// and continually print up to date terminal information.
import (
"context"
"fmt"
"log"
"os"
"os/signal"
"syscall"
"time"
tea "github.com/charmbracelet/bubbletea"
"github.com/charmbracelet/wish"
bm "github.com/charmbracelet/wish/bubbletea"
lm "github.com/charmbracelet/wish/logging"
"github.com/gliderlabs/ssh"
"github.com/muesli/termenv"
)
const (
host = "localhost"
port = 23234
)
func main() {
s, err := wish.NewServer(
wish.WithAddress(fmt.Sprintf("%s:%d", host, port)),
wish.WithHostKeyPath(".ssh/term_info_ed25519"),
wish.WithMiddleware(
myCustomBubbleteaMiddleware(),
lm.Middleware(),
),
)
if err != nil {
log.Fatalln(err)
}
done := make(chan os.Signal, 1)
signal.Notify(done, os.Interrupt, syscall.SIGINT, syscall.SIGTERM)
log.Printf("Starting SSH server on %s:%d", host, port)
go func() {
if err = s.ListenAndServe(); err != nil {
log.Fatalln(err)
}
}()
<-done
log.Println("Stopping SSH server")
ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
defer func() { cancel() }()
if err := s.Shutdown(ctx); err != nil {
log.Fatalln(err)
}
}
// You can write your own custom bubbletea middleware that wraps tea.Program.
// Make sure you set the program input and output to ssh.Session.
func myCustomBubbleteaMiddleware() wish.Middleware {
newProg := func(m tea.Model, opts ...tea.ProgramOption) *tea.Program {
p := tea.NewProgram(m, opts...)
go func() {
for {
<-time.After(1 * time.Second)
p.Send(timeMsg(time.Now()))
}
}()
return p
}
teaHandler := func(s ssh.Session) *tea.Program {
pty, _, active := s.Pty()
if !active {
wish.Fatalln(s, "no active terminal, skipping")
return nil
}
m := model{
term: pty.Term,
width: pty.Window.Width,
height: pty.Window.Height,
time: time.Now(),
}
return newProg(m, tea.WithInput(s), tea.WithOutput(s), tea.WithAltScreen())
}
return bm.MiddlewareWithProgramHandler(teaHandler, termenv.ANSI256)
}
// Just a generic tea.Model to demo terminal information of ssh.
type model struct {
term string
width int
height int
time time.Time
}
type timeMsg time.Time
func (m model) Init() tea.Cmd {
return nil
}
func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
switch msg := msg.(type) {
case timeMsg:
m.time = time.Time(msg)
case tea.WindowSizeMsg:
m.height = msg.Height
m.width = msg.Width
case tea.KeyMsg:
switch msg.String() {
case "q", "ctrl+c":
return m, tea.Quit
}
}
return m, nil
}
func (m model) View() string {
s := "Your term is %s\n"
s += "Your window size is x: %d y: %d\n"
s += "Time: " + m.time.Format(time.RFC1123) + "\n\n"
s += "Press 'q' to quit\n"
return fmt.Sprintf(s, m.term, m.width, m.height)
}