apg-go/cmd/apg/apg.go

99 lines
3.3 KiB
Go
Raw Normal View History

2021-09-21 11:31:39 +02:00
package main
import (
"flag"
"fmt"
"github.com/wneessen/apg-go/chars"
"github.com/wneessen/apg-go/config"
"github.com/wneessen/apg-go/random"
"github.com/wneessen/apg-go/spelling"
2021-09-22 20:23:43 +02:00
"github.com/wneessen/go-hibp"
2021-09-21 11:31:39 +02:00
"log"
"os"
2021-09-21 14:03:09 +02:00
"time"
2021-09-21 11:31:39 +02:00
)
const VersionString string = "0.3.3"
// Help text
const usage = `apg-go // A "Automated Password Generator"-clone
Copyright (c) 2021 Winni Neessen
apg [-m <length>] [-x <length>] [-L] [-U] [-N] [-S] [-H] [-C]
[-l] [-M mode] [-E char_string] [-n num_of_pass] [-v] [-h]
Options:
-m LENGTH Minimum length of the password to be generated (Default: 12)
-x LENGTH Maximum length of the password to be generated (Default: 20)
-n NUMBER Amount of password to be generated (Default: 6)
-E CHARS List of characters to be excluded in the generated password
-M [LUNSHClunshc] New style password parameters (upper case: on, lower case: off)
-L Use lower case characters in passwords (Default: on)
-U Use upper case characters in passwords (Default: on)
-N Use numeric characters in passwords (Default: on)
-S Use special characters in passwords (Default: off)
-H Avoid ambiguous characters in passwords (i. e.: 1, l, I, O, 0) (Default: off)
-C Enable complex password mode (implies -L -U -N -S and disables -H) (Default: off)
-l Spell generated passwords in phonetic alphabet (Default: off)
-p Check the HIBP database if the generated passwords was found in a leak before (Default: off)
'--> this feature requires internet connectivity
-h Show this help text
-v Show version string`
// Main function that generated the passwords and returns them
func main() {
// Log configuration
log.SetFlags(log.Ltime | log.Ldate | log.Lshortfile)
// Read and parse flags
flag.Usage = func() { _, _ = fmt.Fprintf(os.Stderr, "%s\n", usage) }
var cfgObj = config.New()
// Show version and exit
if cfgObj.ShowVersion {
_, _ = os.Stderr.WriteString(`apg-go // A "Automated Password Generator"-clone v` + VersionString + "\n")
_, _ = os.Stderr.WriteString("(C) 2021 by Winni Neessen\n")
os.Exit(0)
}
// Set PW length and available characterset
charRange := chars.GetRange(&cfgObj)
// Generate passwords
for i := 1; i <= cfgObj.NumOfPass; i++ {
pwLength := config.GetPwLengthFromParams(&cfgObj)
pwString, err := random.GetChar(&charRange, pwLength)
if err != nil {
log.Fatalf("getRandChar returned an error: %q\n", err)
}
switch cfgObj.OutputMode {
case 1:
{
spelledPw, err := spelling.String(pwString)
if err != nil {
log.Fatalf("spellPasswordString returned an error: %q\n", err.Error())
}
fmt.Printf("%v (%v)\n", pwString, spelledPw)
break
}
default:
{
fmt.Println(pwString)
break
}
}
if cfgObj.CheckHibp {
2021-09-21 14:03:09 +02:00
hc := hibp.New(hibp.WithHttpTimeout(time.Second * 2))
2021-09-22 20:23:43 +02:00
pwnObj, _, err := hc.PwnedPassApi.CheckPassword(pwString)
2021-09-21 11:31:39 +02:00
if err != nil {
log.Printf("unable to check HIBP database: %v", err)
}
2021-09-21 14:03:09 +02:00
if pwnObj != nil && pwnObj.Count != 0 {
2021-09-21 11:31:39 +02:00
fmt.Print("^-- !!WARNING: The previously generated password was found in HIPB database. Do not use it!!\n")
}
}
}
}