blob: 87a473ed6dbd9170f605d125bdc5d5a9090527a5 [file] [log] [blame]
// Copyright 2017 The Go 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 main
import (
"flag"
"fmt"
"log"
"os"
"os/exec"
"strings"
"syscall"
"golang.org/x/build/internal/gophers"
)
func ssh(args []string) error {
fs := flag.NewFlagSet("ssh", flag.ContinueOnError)
fs.Usage = func() {
fmt.Fprintln(os.Stderr, "ssh usage: gomote ssh <instance>")
fs.PrintDefaults()
os.Exit(1)
}
var mutable bool
fs.BoolVar(&mutable, "i-will-not-break-the-host", false, "required for older host configs with reused filesystems; using this says that you are aware that your changes to the machine's root filesystem affect future builds. This is a no-op for the newer, safe host configs.")
fs.Parse(args)
if fs.NArg() != 1 {
fs.Usage()
}
name := fs.Arg(0)
_, err := remoteClient(name)
if err != nil {
return err
}
// gomoteUser extracts "gopher" from "user-gopher-linux-amd64-0".
gomoteUser := strings.Split(name, "-")[1]
githubUser := gophers.GithubOfGomoteUser(gomoteUser)
sshUser := name
if mutable {
sshUser = "mutable-" + sshUser
}
ssh, err := exec.LookPath("ssh")
if err != nil {
log.Printf("No 'ssh' binary found in path so can't run:")
}
fmt.Printf("$ ssh -p 2222 %s@farmer.golang.org # auth using https://github.com/%s.keys\n", sshUser, githubUser)
// Best effort, where supported:
syscall.Exec(ssh, []string{"ssh", "-p", "2222", sshUser + "@farmer.golang.org"}, os.Environ())
return nil
}