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// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cli
import (
"context"
"flag"
"fmt"
"log"
"github.com/peterbourgon/ff/v2/ffcli"
"tailscale.com/client/tailscale"
"tailscale.com/version"
)
var versionCmd = &ffcli.Command{
Name: "version",
ShortUsage: "version [flags]",
ShortHelp: "Print Tailscale version",
FlagSet: (func() *flag.FlagSet {
fs := flag.NewFlagSet("version", flag.ExitOnError)
fs.BoolVar(&versionArgs.daemon, "daemon", false, "also print local node's daemon version")
return fs
})(),
Exec: runVersion,
}
var versionArgs struct {
daemon bool // also check local node's daemon version
}
func runVersion(ctx context.Context, args []string) error {
if len(args) > 0 {
log.Fatalf("too many non-flag arguments: %q", args)
}
if !versionArgs.daemon {
fmt.Println(version.String())
return nil
}
fmt.Printf("Client: %s\n", version.String())
st, err := tailscale.StatusWithoutPeers(ctx)
if err != nil {
return err
}
fmt.Printf("Daemon: %s\n", st.Version)
return nil
}
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