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app.go
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app.go
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package commands
import (
"bytes"
"fmt"
"io/ioutil"
"net/http"
"os"
"unicode"
"github.com/pkg/errors"
"github.com/smallstep/certificates/authority"
"github.com/smallstep/certificates/ca"
"github.com/smallstep/cli/errs"
"github.com/urfave/cli"
)
// AppCommand is the action used as the top action.
var AppCommand = cli.Command{
Name: "start",
Action: appAction,
UsageText: `**step-ca** <config>
[**--password-file**=<file>]`,
Flags: []cli.Flag{
cli.StringFlag{
Name: "password-file",
Usage: `path to the <file> containing the password to decrypt the
intermediate private key.`,
},
},
}
// AppAction is the action used when the top command runs.
func appAction(ctx *cli.Context) error {
passFile := ctx.String("password-file")
// 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)
}
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)
}