apg-go/apg.go
Winni Neessen 327dc6459a
v0.2.6 - converted to go module structure
- Better logging
- Better error handling
- Removed Makefile since github takes care of building/releasing
2021-03-22 17:53:36 +01:00

103 lines
3 KiB
Go

package main
import (
"flag"
"fmt"
"log"
"os"
)
// Constants
const DefaultPwLenght int = 20
const VersionString string = "0.2.6"
const PwLowerCharsHuman string = "abcdefghjkmnpqrstuvwxyz"
const PwUpperCharsHuman string = "ABCDEFGHJKMNPQRSTUVWXYZ"
const PwLowerChars string = "abcdefghijklmnopqrstuvwxyz"
const PwUpperChars string = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
const PwSpecialCharsHuman string = "\"#%*+-/:;=\\_|~"
const PwSpecialChars string = "!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~"
const PwNumbersHuman string = "23456789"
const PwNumbers string = "1234567890"
type cliOpts struct {
minPassLen int
maxPassLen int
numOfPass int
useComplex bool
useLowerCase bool
useUpperCase bool
useNumber bool
useSpecial bool
humanReadable bool
excludeChars string
newStyleModes string
spellPassword bool
showHelp bool
showVersion bool
outputMode int
}
var config cliOpts
// Read flags
func init() {
// Bool flags
flag.BoolVar(&config.useLowerCase, "L", true, "Use lower case characters in passwords")
flag.BoolVar(&config.useUpperCase, "U", true, "Use upper case characters in passwords")
flag.BoolVar(&config.useNumber, "N", true, "Use numbers in passwords")
flag.BoolVar(&config.useSpecial, "S", false, "Use special characters in passwords")
flag.BoolVar(&config.useComplex, "C", false, "Generate complex passwords (implies -L -U -N -S, disables -H)")
flag.BoolVar(&config.spellPassword, "l", false, "Spell generated password")
flag.BoolVar(&config.humanReadable, "H", false, "Generate human-readable passwords")
flag.BoolVar(&config.showVersion, "v", false, "Show version")
// Int flags
flag.IntVar(&config.minPassLen, "m", DefaultPwLenght, "Minimum password length")
flag.IntVar(&config.maxPassLen, "x", DefaultPwLenght, "Maxiumum password length")
flag.IntVar(&config.numOfPass, "n", 1, "Number of passwords to generate")
// String flags
flag.StringVar(&config.excludeChars, "E", "", "Exclude list of characters from generated password")
flag.StringVar(&config.newStyleModes, "M", "",
"New style password parameters (higher priority than single parameters)")
flag.Parse()
if config.showVersion {
_, _ = os.Stderr.WriteString("Winni's Advanced Password Generator Clone (apg.go) v" + VersionString + "\n")
_, _ = os.Stderr.WriteString("(C) 2021 by Winni Neessen\n")
os.Exit(0)
}
log.SetFlags(log.Ltime | log.Ldate | log.Lshortfile)
}
// Main function that generated the passwords and returns them
func main() {
parseParams()
pwLength := getPwLengthFromParams()
charRange := getCharRange()
for i := 1; i <= config.numOfPass; i++ {
pwString, err := getRandChar(&charRange, pwLength)
if err != nil {
log.Fatalf("getRandChar returned an error: %q\n", err)
}
switch config.outputMode {
case 1:
{
spelledPw, err := spellPasswordString(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
}
}
}
}