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* feat: support server banners closes #205 needs charmbracelet/ssh#10 Signed-off-by: Carlos Alexandro Becker <caarlos0@users.noreply.github.com> * test: banner Signed-off-by: Carlos Alexandro Becker <caarlos0@users.noreply.github.com> * chore: dep Signed-off-by: Carlos Alexandro Becker <caarlos0@users.noreply.github.com> * feat: banner handler Signed-off-by: Carlos Alexandro Becker <caarlos0@users.noreply.github.com> * go mod tidy Signed-off-by: Carlos Alexandro Becker <caarlos0@users.noreply.github.com> * fix: improve example Signed-off-by: Carlos Alexandro Becker <caarlos0@users.noreply.github.com> --------- Signed-off-by: Carlos Alexandro Becker <caarlos0@users.noreply.github.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,14 @@ | ||
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| Hello %s, welcome to a SSH server powered by | ||
| __ ___ _ _ _ _ | ||
| \ \ / (_)___| |__ | | | | | ||
| \ \ /\ / /| / __| '_ \| | | | | ||
| \ V V / | \__ \ | | |_|_|_| | ||
| \_/\_/ |_|___/_| |_(_|_|_) | ||
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| PS: The password is "asd123". | ||
| PPS: Visit https://charm.sh to learn more! | ||
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| --- | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,69 @@ | ||
| package main | ||
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| import ( | ||
| "context" | ||
| "errors" | ||
| "fmt" | ||
| "os" | ||
| "os/signal" | ||
| "syscall" | ||
| "time" | ||
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| _ "embed" | ||
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| "github.com/charmbracelet/log" | ||
| "github.com/charmbracelet/ssh" | ||
| "github.com/charmbracelet/wish" | ||
| "github.com/charmbracelet/wish/logging" | ||
| ) | ||
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| const ( | ||
| host = "localhost" | ||
| port = 23234 | ||
| ) | ||
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| //go:embed banner.txt | ||
| var banner string | ||
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| func main() { | ||
| s, err := wish.NewServer( | ||
| wish.WithAddress(fmt.Sprintf("%s:%d", host, port)), | ||
| wish.WithHostKeyPath(".ssh/term_info_ed25519"), | ||
| wish.WithBannerHandler(func(ctx ssh.Context) string { | ||
| return fmt.Sprintf(banner, ctx.User()) | ||
| }), | ||
| wish.WithPasswordAuth(func(ctx ssh.Context, password string) bool { | ||
| return password == "asd123" | ||
| }), | ||
| wish.WithMiddleware( | ||
| func(h ssh.Handler) ssh.Handler { | ||
| return func(s ssh.Session) { | ||
| wish.Println(s, "Hello, world!") | ||
| h(s) | ||
| } | ||
| }, | ||
| logging.Middleware(), | ||
| ), | ||
| ) | ||
| if err != nil { | ||
| log.Error("could not start server", "error", err) | ||
| } | ||
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| done := make(chan os.Signal, 1) | ||
| signal.Notify(done, os.Interrupt, syscall.SIGINT, syscall.SIGTERM) | ||
| log.Info("Starting SSH server", "host", host, "port", port) | ||
| go func() { | ||
| if err = s.ListenAndServe(); err != nil && !errors.Is(err, ssh.ErrServerClosed) { | ||
| log.Error("could not start server", "error", err) | ||
| done <- nil | ||
| } | ||
| }() | ||
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| <-done | ||
| log.Info("Stopping SSH server") | ||
| ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second) | ||
| defer func() { cancel() }() | ||
| if err := s.Shutdown(ctx); err != nil && !errors.Is(err, ssh.ErrServerClosed) { | ||
| log.Error("could not stop server", "error", err) | ||
| } | ||
| } |
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