mirror of
https://github.com/wneessen/apg-go.git
synced 2024-12-23 03:30:39 +01:00
Split up functions into seperate files
This commit is contained in:
parent
3a87ae7829
commit
eb221ccc69
GPG key ID:
385AC9889632126E
5 changed files with 181 additions and 97 deletions
2
Makefile
2
Makefile
|
|
@ -83,7 +83,7 @@ clean: # @HELP removes built binaries and temporary files
|
|||
clean: bin-clean
|
||||
|
||||
bin-clean:
|
||||
rm -rf .go bin
|
||||
rm -rf .go bin *.exe
|
||||
|
||||
help: # @HELP prints this message
|
||||
help:
|
||||
|
|
|
|||
102
apg.go
102
apg.go
|
|
@ -1,17 +1,14 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"crypto/rand"
|
||||
"flag"
|
||||
"fmt"
|
||||
"math/big"
|
||||
"os"
|
||||
"regexp"
|
||||
)
|
||||
|
||||
// Constants
|
||||
const DefaultPwLenght int = 20
|
||||
const VersionString string = "0.2.3"
|
||||
const VersionString string = "0.2.4"
|
||||
const PwLowerCharsHuman string = "abcdefghjkmnpqrstuvwxyz"
|
||||
const PwUpperCharsHuman string = "ABCDEFGHJKMNPQRSTUVWXYZ"
|
||||
const PwLowerChars string = "abcdefghijklmnopqrstuvwxyz"
|
||||
|
|
@ -32,6 +29,7 @@ type cliOpts struct {
|
|||
useSpecial bool
|
||||
humanReadable bool
|
||||
excludeChars string
|
||||
newStyleModes string
|
||||
showHelp bool
|
||||
showVersion bool
|
||||
}
|
||||
|
|
@ -56,6 +54,8 @@ func init() {
|
|||
|
||||
// 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 {
|
||||
|
|
@ -66,21 +66,8 @@ func init() {
|
|||
|
||||
// Main function that generated the passwords and returns them
|
||||
func main() {
|
||||
pwLength := config.minPassLen
|
||||
if pwLength < config.minPassLen {
|
||||
pwLength = config.minPassLen
|
||||
}
|
||||
if pwLength > config.maxPassLen {
|
||||
pwLength = config.maxPassLen
|
||||
}
|
||||
if config.useComplex {
|
||||
config.useUpperCase = true
|
||||
config.useLowerCase = true
|
||||
config.useSpecial = true
|
||||
config.useNumber = true
|
||||
config.humanReadable = false
|
||||
}
|
||||
|
||||
parseParams()
|
||||
pwLength := getPwLengthFromParams()
|
||||
charRange := getCharRange()
|
||||
|
||||
for i := 1; i <= config.numOfPass; i++ {
|
||||
|
|
@ -92,80 +79,3 @@ func main() {
|
|||
fmt.Println(pwString)
|
||||
}
|
||||
}
|
||||
|
||||
// Provide the range of available characters based on provided parameters
|
||||
func getCharRange() string {
|
||||
pwUpperChars := PwUpperChars
|
||||
pwLowerChars := PwLowerChars
|
||||
pwNumbers := PwNumbers
|
||||
pwSpecialChars := PwSpecialChars
|
||||
if config.humanReadable {
|
||||
pwUpperChars = PwUpperCharsHuman
|
||||
pwLowerChars = PwLowerCharsHuman
|
||||
pwNumbers = PwNumbersHuman
|
||||
pwSpecialChars = PwSpecialCharsHuman
|
||||
}
|
||||
|
||||
var charRange string
|
||||
if config.useLowerCase {
|
||||
charRange = charRange + pwLowerChars
|
||||
}
|
||||
if config.useUpperCase {
|
||||
charRange = charRange + pwUpperChars
|
||||
}
|
||||
if config.useNumber {
|
||||
charRange = charRange + pwNumbers
|
||||
}
|
||||
if config.useSpecial {
|
||||
charRange = charRange + pwSpecialChars
|
||||
}
|
||||
if config.excludeChars != "" {
|
||||
regExp := regexp.MustCompile("[" + config.excludeChars + "]")
|
||||
charRange = regExp.ReplaceAllLiteralString(charRange, "")
|
||||
}
|
||||
|
||||
return charRange
|
||||
}
|
||||
|
||||
// Generate random characters based on given character range
|
||||
// and password length
|
||||
func getRandChar(charRange *string, pwLength int) (string, error) {
|
||||
if pwLength <= 0 {
|
||||
err := fmt.Errorf("provided pwLength value is <= 0: %v", pwLength)
|
||||
return "", err
|
||||
}
|
||||
availCharsLength := len(*charRange)
|
||||
charSlice := []byte(*charRange)
|
||||
returnString := make([]byte, pwLength)
|
||||
for i := 0; i < pwLength; i++ {
|
||||
randNum, err := getRandNum(availCharsLength)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
returnString[i] = charSlice[randNum]
|
||||
}
|
||||
return string(returnString), nil
|
||||
}
|
||||
|
||||
// Generate a random number with given maximum value
|
||||
func getRandNum(maxNum int) (int, error) {
|
||||
if maxNum <= 0 {
|
||||
err := fmt.Errorf("provided maxNum is <= 0: %v", maxNum)
|
||||
return 0, err
|
||||
}
|
||||
maxNumBigInt := big.NewInt(int64(maxNum))
|
||||
if !maxNumBigInt.IsUint64() {
|
||||
err := fmt.Errorf("big.NewInt() generation returned negative value: %v", maxNumBigInt)
|
||||
return 0, err
|
||||
}
|
||||
randNum64, err := rand.Int(rand.Reader, maxNumBigInt)
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
randNum := int(randNum64.Int64())
|
||||
if randNum < 0 {
|
||||
err := fmt.Errorf("generated random number does not fit as int64: %v", randNum64)
|
||||
return 0, err
|
||||
}
|
||||
return randNum, nil
|
||||
}
|
||||
|
|
|
|||
37
chars.go
Normal file
37
chars.go
Normal file
|
|
@ -0,0 +1,37 @@
|
|||
package main
|
||||
|
||||
import "regexp"
|
||||
|
||||
// Provide the range of available characters based on provided parameters
|
||||
func getCharRange() string {
|
||||
pwUpperChars := PwUpperChars
|
||||
pwLowerChars := PwLowerChars
|
||||
pwNumbers := PwNumbers
|
||||
pwSpecialChars := PwSpecialChars
|
||||
if config.humanReadable {
|
||||
pwUpperChars = PwUpperCharsHuman
|
||||
pwLowerChars = PwLowerCharsHuman
|
||||
pwNumbers = PwNumbersHuman
|
||||
pwSpecialChars = PwSpecialCharsHuman
|
||||
}
|
||||
|
||||
var charRange string
|
||||
if config.useLowerCase {
|
||||
charRange = charRange + pwLowerChars
|
||||
}
|
||||
if config.useUpperCase {
|
||||
charRange = charRange + pwUpperChars
|
||||
}
|
||||
if config.useNumber {
|
||||
charRange = charRange + pwNumbers
|
||||
}
|
||||
if config.useSpecial {
|
||||
charRange = charRange + pwSpecialChars
|
||||
}
|
||||
if config.excludeChars != "" {
|
||||
regExp := regexp.MustCompile("[" + config.excludeChars + "]")
|
||||
charRange = regExp.ReplaceAllLiteralString(charRange, "")
|
||||
}
|
||||
|
||||
return charRange
|
||||
}
|
||||
87
params.go
Normal file
87
params.go
Normal file
|
|
@ -0,0 +1,87 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"os"
|
||||
)
|
||||
|
||||
// Parse the new style parameters
|
||||
func parseNewStyleParams() {
|
||||
for _, curParam := range config.newStyleModes {
|
||||
switch curParam {
|
||||
case 'S':
|
||||
config.useSpecial = true
|
||||
break
|
||||
case 's':
|
||||
config.useSpecial = false
|
||||
break
|
||||
case 'N':
|
||||
config.useNumber = true
|
||||
break
|
||||
case 'n':
|
||||
config.useNumber = false
|
||||
break
|
||||
case 'L':
|
||||
config.useLowerCase = true
|
||||
break
|
||||
case 'l':
|
||||
config.useLowerCase = false
|
||||
break
|
||||
case 'U':
|
||||
config.useUpperCase = true
|
||||
break
|
||||
case 'u':
|
||||
config.useUpperCase = false
|
||||
break
|
||||
case 'H':
|
||||
config.humanReadable = true
|
||||
break
|
||||
case 'h':
|
||||
config.humanReadable = false
|
||||
break
|
||||
// APG compatbilitly
|
||||
case 'C':
|
||||
config.useUpperCase = true
|
||||
break
|
||||
case 'c':
|
||||
config.useUpperCase = false
|
||||
break
|
||||
default:
|
||||
fmt.Printf("Unknown password style parameter: %q\n", string(curParam))
|
||||
os.Exit(1)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func getPwLengthFromParams() int {
|
||||
pwLength := config.minPassLen
|
||||
if pwLength < config.minPassLen {
|
||||
pwLength = config.minPassLen
|
||||
}
|
||||
if pwLength > config.maxPassLen {
|
||||
pwLength = config.maxPassLen
|
||||
}
|
||||
|
||||
return pwLength
|
||||
}
|
||||
|
||||
func parseParams() {
|
||||
if config.useComplex {
|
||||
config.useUpperCase = true
|
||||
config.useLowerCase = true
|
||||
config.useSpecial = true
|
||||
config.useNumber = true
|
||||
config.humanReadable = false
|
||||
}
|
||||
if config.newStyleModes != "" {
|
||||
parseNewStyleParams()
|
||||
}
|
||||
|
||||
if config.useUpperCase == false &&
|
||||
config.useLowerCase == false &&
|
||||
config.useNumber == false &&
|
||||
config.useSpecial == false {
|
||||
fmt.Printf("No password mode set. Cannot generate password from empty character set.")
|
||||
os.Exit(1)
|
||||
}
|
||||
}
|
||||
50
rand.go
Normal file
50
rand.go
Normal file
|
|
@ -0,0 +1,50 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"crypto/rand"
|
||||
"fmt"
|
||||
"math/big"
|
||||
)
|
||||
|
||||
// Generate random characters based on given character range
|
||||
// and password length
|
||||
func getRandChar(charRange *string, pwLength int) (string, error) {
|
||||
if pwLength <= 0 {
|
||||
err := fmt.Errorf("provided pwLength value is <= 0: %v", pwLength)
|
||||
return "", err
|
||||
}
|
||||
availCharsLength := len(*charRange)
|
||||
charSlice := []byte(*charRange)
|
||||
returnString := make([]byte, pwLength)
|
||||
for i := 0; i < pwLength; i++ {
|
||||
randNum, err := getRandNum(availCharsLength)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
returnString[i] = charSlice[randNum]
|
||||
}
|
||||
return string(returnString), nil
|
||||
}
|
||||
|
||||
// Generate a random number with given maximum value
|
||||
func getRandNum(maxNum int) (int, error) {
|
||||
if maxNum <= 0 {
|
||||
err := fmt.Errorf("provided maxNum is <= 0: %v", maxNum)
|
||||
return 0, err
|
||||
}
|
||||
maxNumBigInt := big.NewInt(int64(maxNum))
|
||||
if !maxNumBigInt.IsUint64() {
|
||||
err := fmt.Errorf("big.NewInt() generation returned negative value: %v", maxNumBigInt)
|
||||
return 0, err
|
||||
}
|
||||
randNum64, err := rand.Int(rand.Reader, maxNumBigInt)
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
randNum := int(randNum64.Int64())
|
||||
if randNum < 0 {
|
||||
err := fmt.Errorf("generated random number does not fit as int64: %v", randNum64)
|
||||
return 0, err
|
||||
}
|
||||
return randNum, nil
|
||||
}
|
||||
Loading…
Reference in a new issue