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package main
import (
"flag"
"fmt"
"os"
"github.com/cloudflare/cfssl/cli"
"github.com/cloudflare/cfssl/cli/certinfo"
"github.com/cloudflare/cfssl/config"
)
// main defines the newkey usage and registers all defined commands and flags.
func main() {
var certinfoFlagSet = flag.NewFlagSet("certinfo", flag.ExitOnError)
var c cli.Config
registerFlags(&c, certinfoFlagSet)
var usageText = `cfssl-certinfo -- output certinfo about the given cert
Usage of certinfo:
- Data from local certificate files
certinfo -cert file
- Data from certificate from remote server.
certinfo -domain domain_name
Flags:
`
certinfoFlagSet.Usage = func() {
fmt.Fprintf(os.Stderr, "\t%s", usageText)
for _, name := range certinfo.Command.Flags {
if f := certinfoFlagSet.Lookup(name); f != nil {
printDefaultValue(f)
}
}
}
args := os.Args[1:]
certinfoFlagSet.Parse(args)
args = certinfoFlagSet.Args()
var err error
c.CFG, err = config.LoadFile(c.ConfigFile)
if c.ConfigFile != "" && err != nil {
fmt.Fprintf(os.Stderr, "Failed to load config file: %v", err)
}
if err := certinfo.Command.Main(args, c); err != nil {
fmt.Fprintln(os.Stderr, err)
}
}
// printDefaultValue is a helper function to print out a user friendly
// usage message of a flag. It's useful since we want to write customized
// usage message on selected subsets of the global flag set. It is
// borrowed from standard library source code. Since flag value type is
// not exported, default string flag values are printed without
// quotes. The only exception is the empty string, which is printed as "".
func printDefaultValue(f *flag.Flag) {
format := " -%s=%s: %s\n"
if f.DefValue == "" {
format = " -%s=%q: %s\n"
}
fmt.Fprintf(os.Stderr, format, f.Name, f.DefValue, f.Usage)
}
// registerFlags defines all cfssl command flags and associates their values with variables.
func registerFlags(c *cli.Config, f *flag.FlagSet) {
f.StringVar(&c.CertFile, "cert", "", "Client certificate that contains the public key")
f.StringVar(&c.Domain, "domain", "", "remote server domain name")
}
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