// updatable
func updatable() (bool, error) {
//
path, err := osext.Executable()
if err != nil {
return false, err
}
// check the md5 of the current executing cli against the remote md5;
// os.Args[0] is used as the final interpolation to determine standard/dev versions
match, err := util.MD5sMatch(path, fmt.Sprintf("https://s3.amazonaws.com/tools.nanobox.io/cli/%s/%s/%s.md5", config.OS, config.ARCH, filepath.Base(os.Args[0])))
if err != nil {
return false, err
}
// if the MD5's DONT match we want to update
return !match, nil
}
// runUpdate attemtps to update using the updater; if it's not available nanobox
// will download it and then run it.
func runUpdate() error {
//
path, err := osext.Executable()
if err != nil {
return err
}
// get the directory of the current executing cli
dir := filepath.Dir(path)
// see if the updater is available on PATH
if _, err := exec.LookPath("nanobox-update"); err != nil {
tmpFile := filepath.Join(config.TmpDir, "nanobox-update")
// create a tmp updater in tmp dir
f, err := os.Create(tmpFile)
if err != nil {
return err
}
defer f.Close()
// the updateder is not available and needs to be downloaded
dl := fmt.Sprintf("https://s3.amazonaws.com/tools.nanobox.io/updaters/%s/%s/nanobox-update", config.OS, config.ARCH)
fmt.Printf("'nanobox-update' not found. Downloading from %s\n", dl)
fileutil.Progress(dl, f)
// ensure updater download matches the remote md5; if the download fails for any
// reason this md5 should NOT match.
md5 := fmt.Sprintf("https://s3.amazonaws.com/tools.nanobox.io/updaters/%s/%s/nanobox-udpate.md5", config.OS, config.ARCH)
if _, err = util.MD5sMatch(tmpFile, md5); err != nil {
return err
}
// make new updater executable
if err := os.Chmod(tmpFile, 0755); err != nil {
return err
}
// move updater to the same location as the cli
if err = os.Rename(tmpFile, filepath.Join(dir, "nanobox-update")); err != nil {
return err
}
}
cmd := exec.Command(filepath.Join(dir, "nanobox-update"), "-o", filepath.Base(path))
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
// run the updater
if err := cmd.Run(); err != nil {
config.Fatal("[commands/update] exec.Command().Run() failed", err.Error())
}
// update the .update file
return touchUpdate()
}