package commands import ( "bytes" "context" "fmt" "io/ioutil" "net" "net/http" "os" "unicode" "github.com/pkg/errors" "github.com/smallstep/certificates/authority" "github.com/smallstep/certificates/ca" "github.com/urfave/cli" "go.step.sm/cli-utils/errs" ) // AppCommand is the action used as the top action. var AppCommand = cli.Command{ Name: "start", Action: appAction, UsageText: `**step-ca** [**--password-file**=] [**--resolver**=]`, Flags: []cli.Flag{ cli.StringFlag{ Name: "password-file", Usage: `path to the containing the password to decrypt the intermediate private key.`, }, cli.StringFlag{ Name: "resolver", Usage: "address of a DNS resolver to be used instead of the default.", }, }, } // AppAction is the action used when the top command runs. func appAction(ctx *cli.Context) error { passFile := ctx.String("password-file") resolver := ctx.String("resolver") // If zero cmd line args show help, if >1 cmd line args show error. if ctx.NArg() == 0 { return cli.ShowAppHelp(ctx) } if err := errs.NumberOfArguments(ctx, 1); err != nil { return err } configFile := ctx.Args().Get(0) config, err := authority.LoadConfiguration(configFile) if err != nil { fatal(err) } var password []byte if passFile != "" { if password, err = ioutil.ReadFile(passFile); err != nil { fatal(errors.Wrapf(err, "error reading %s", passFile)) } password = bytes.TrimRightFunc(password, unicode.IsSpace) } // replace resolver if requested if resolver != "" { net.DefaultResolver.PreferGo = true net.DefaultResolver.Dial = func(ctx context.Context, network, address string) (net.Conn, error) { return net.Dial(network, resolver) } } srv, err := ca.New(config, ca.WithConfigFile(configFile), ca.WithPassword(password)) if err != nil { fatal(err) } go ca.StopReloaderHandler(srv) if err = srv.Run(); err != nil && err != http.ErrServerClosed { fatal(err) } return nil } // fatal writes the passed error on the standard error and exits with the exit // code 1. If the environment variable STEPDEBUG is set to 1 it shows the // stack trace of the error. func fatal(err error) { if os.Getenv("STEPDEBUG") == "1" { fmt.Fprintf(os.Stderr, "%+v\n", err) } else { fmt.Fprintln(os.Stderr, err) } os.Exit(2) }