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package main
import (
"fmt"
"log"
"math/rand"
"net/http"
"os"
"reflect"
"regexp"
"strings"
"time"
"github.com/smallstep/certificates/ca"
"github.com/smallstep/cli/command"
"github.com/smallstep/cli/command/version"
"github.com/smallstep/cli/config"
"github.com/smallstep/cli/errs"
"github.com/smallstep/cli/usage"
"github.com/urfave/cli"
// Enabled commands
_ "github.com/smallstep/cli/command/base64"
_ "github.com/smallstep/cli/command/ca"
_ "github.com/smallstep/cli/command/certificate"
_ "github.com/smallstep/cli/command/crypto"
_ "github.com/smallstep/cli/command/fileserver"
_ "github.com/smallstep/cli/command/oauth"
_ "github.com/smallstep/cli/command/path"
_ "github.com/smallstep/cli/command/ssh"
// Enabled cas interfaces.
_ "github.com/smallstep/certificates/cas/cloudcas"
_ "github.com/smallstep/certificates/cas/softcas"
// Profiling and debugging
_ "net/http/pprof"
)
// Version is set by an LDFLAG at build time representing the git tag or commit
// for the current release
var Version = "N/A"
// BuildTime is set by an LDFLAG at build time representing the timestamp at
// the time of build
var BuildTime = "N/A"
func init() {
config.Set("Smallstep CLI", Version, BuildTime)
ca.UserAgent = config.Version()
rand.Seed(time.Now().UnixNano())
}
func main() {
defer panicHandler()
// Override global framework components
cli.VersionPrinter = func(c *cli.Context) {
version.Command(c)
}
cli.AppHelpTemplate = usage.AppHelpTemplate
cli.SubcommandHelpTemplate = usage.SubcommandHelpTemplate
cli.CommandHelpTemplate = usage.CommandHelpTemplate
cli.HelpPrinter = usage.HelpPrinter
cli.FlagNamePrefixer = usage.FlagNamePrefixer
cli.FlagStringer = stringifyFlag
// Configure cli app
app := cli.NewApp()
app.Name = "step"
app.HelpName = "step"
app.Usage = "plumbing for distributed systems"
app.Version = config.Version()
app.Commands = command.Retrieve()
app.Flags = append(app.Flags, cli.HelpFlag)
app.EnableBashCompletion = true
app.Copyright = "(c) 2018-2020 Smallstep Labs, Inc."
// Flag of custom configuration flag
app.Flags = append(app.Flags, cli.StringFlag{
Name: "config",
Usage: "path to the config file to use for CLI flags",
})
// All non-successful output should be written to stderr
app.Writer = os.Stdout
app.ErrWriter = os.Stderr
// Start the golang debug logger if environment variable is set.
// See https://golang.org/pkg/net/http/pprof/
debugProfAddr := os.Getenv("STEP_PROF_ADDR")
if debugProfAddr != "" {
go func() {
log.Println(http.ListenAndServe(debugProfAddr, nil))
}()
}
if err := app.Run(os.Args); err != nil {
if fe, ok := err.(errs.FriendlyError); ok {
if os.Getenv("STEPDEBUG") == "1" {
fmt.Fprintf(os.Stderr, "%+v\n\n%s", err, fe.Message())
} else {
fmt.Fprintln(os.Stderr, fe.Message())
fmt.Fprintln(os.Stderr, "Re-run with STEPDEBUG=1 for more info.")
}
} else {
if os.Getenv("STEPDEBUG") == "1" {
fmt.Fprintf(os.Stderr, "%+v\n", err)
} else {
fmt.Fprintln(os.Stderr, err)
}
}
os.Exit(1)
}
}
func panicHandler() {
if r := recover(); r != nil {
if os.Getenv("STEPDEBUG") == "1" {
fmt.Fprintf(os.Stderr, "%s\n", config.Version())
fmt.Fprintf(os.Stderr, "Release Date: %s\n\n", config.ReleaseDate())
panic(r)
} else {
fmt.Fprintln(os.Stderr, "Something unexpected happened.")
fmt.Fprintln(os.Stderr, "If you want to help us debug the problem, please run:")
fmt.Fprintf(os.Stderr, "STEPDEBUG=1 %s\n", strings.Join(os.Args, " "))
fmt.Fprintln(os.Stderr, "and send the output to info@smallstep.com")
os.Exit(2)
}
}
}
func flagValue(f cli.Flag) reflect.Value {
fv := reflect.ValueOf(f)
for fv.Kind() == reflect.Ptr {
fv = reflect.Indirect(fv)
}
return fv
}
var placeholderString = regexp.MustCompile(`<.*?>`)
func stringifyFlag(f cli.Flag) string {
fv := flagValue(f)
usage := fv.FieldByName("Usage").String()
placeholder := placeholderString.FindString(usage)
if placeholder == "" {
switch f.(type) {
case cli.BoolFlag, cli.BoolTFlag:
default:
placeholder = "<value>"
}
}
return cli.FlagNamePrefixer(fv.FieldByName("Name").String(), placeholder) + "\t" + usage
}
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