func (c App) storeHOTP(otp *hotp.HOTP) error {
out, err := hotp.Marshal(otp)
if err != nil {
c.Flash.Error("Oh no! I couldn't store the HOTP key value!")
revel.ERROR.Printf("failed to store HOTP key value: %v", err)
c.FlashParams()
return err
}
c.Session["otp"] = base64.StdEncoding.EncodeToString(out)
return nil
}
func main() {
digits := flag.Int("d", 6, "number of digits")
doRand := flag.Bool("r", false, "randomise counter")
flag.Parse()
var label string
if flag.NArg() == 1 {
label = flag.Arg(0)
}
otp, err := hotp.GenerateHOTP(*digits, *doRand)
if err != nil {
fmt.Printf("! %v\n", err.Error())
return
}
url := otp.URL(label)
png, err := otp.QR(label)
if err != nil {
fmt.Printf("! %v\n", err.Error())
return
}
filename := label
if label == "" {
filename = base32.StdEncoding.EncodeToString([]byte(url))
}
err = ioutil.WriteFile(filename+".png", png, 0644)
if err != nil {
fmt.Printf("! %v\n", err.Error())
return
}
err = ioutil.WriteFile(filename+".txt", []byte(url), 0644)
if err != nil {
fmt.Printf("! %v\n", err.Error())
return
}
keyFile, err := hotp.Marshal(otp)
if err != nil {
fmt.Printf("! %v\n", err.Error())
return
}
err = ioutil.WriteFile(filename+".key", keyFile, 0644)
if err != nil {
fmt.Printf("! %v\n", err.Error())
return
}
}
func main() {
check := flag.Bool("c", false, "do integrity check")
noUpdate := flag.Bool("n", false, "don't update counter")
keyFile := flag.String("k", "hotp.key", "key file")
url := flag.String("u", "", "URL to load new key from")
write := flag.Bool("w", false, "only write URL-loaded key to file")
flag.Parse()
var otp *hotp.HOTP
if *url != "" {
var err error
otp, _, err = hotp.FromURL(*url)
if err != nil {
fmt.Printf("[!] %v\n", err.Error())
return
}
if *write {
out, err := hotp.Marshal(otp)
if err != nil {
fmt.Printf("[!] %v\n", err.Error())
return
}
err = ioutil.WriteFile(*keyFile, out, 0600)
if err != nil {
fmt.Printf("[!] %v\n", err.Error())
return
}
return
}
} else {
in, err := ioutil.ReadFile(*keyFile)
if err != nil {
fmt.Printf("[!] %v\n", err.Error())
return
}
otp, err = hotp.Unmarshal(in)
if err != nil {
fmt.Printf("[!] %v\n", err.Error())
return
}
}
if *check {
code, counter := otp.IntegrityCheck()
fmt.Println(" code:", code)
fmt.Println("counter:", counter)
} else {
fmt.Println(otp.OTP())
}
if !*noUpdate {
out, err := hotp.Marshal(otp)
if err != nil {
fmt.Printf("[!] %v\n", err.Error())
return
}
err = ioutil.WriteFile(*keyFile, out, 0600)
if err != nil {
fmt.Printf("[!] %v\n", err.Error())
return
}
}
}