67 lines
1.9 KiB
Go
67 lines
1.9 KiB
Go
package main
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"math/rand"
|
|
|
|
pwgen "github.com/sethvargo/go-password/password"
|
|
"golang.org/x/crypto/bcrypt"
|
|
"golang.org/x/crypto/ssh/terminal"
|
|
)
|
|
|
|
type PasswordParam struct {
|
|
Password string `name:"password" help:"The password to be set. Empty to prompt."`
|
|
GeneratePassword bool `name:"generate-password" help:"If set, the password is auto generated."`
|
|
GeneratePasswordLength int `name:"password-length" help:"If generate-password is set, this specified the length of the generated password." default:"32"`
|
|
}
|
|
|
|
func (p *PasswordParam) acquirePassword() (string, error) {
|
|
if p.GeneratePassword {
|
|
// math.rand is not secure. For determining the number of digits in a password
|
|
// it should suffice, though. Beware that we expect here that we at least initialized
|
|
// the seed somewhere.
|
|
pw, err := pwgen.Generate(p.GeneratePasswordLength, rand.Intn(p.GeneratePasswordLength/2), 0, false, true)
|
|
if err != nil {
|
|
return "", fmt.Errorf("cannot generate password: %w", err)
|
|
}
|
|
|
|
p.Password = pw
|
|
|
|
fmt.Printf("Password generated: %s\n", p.Password)
|
|
}
|
|
|
|
if p.Password == "" {
|
|
fmt.Printf("Enter password: ")
|
|
bytePassword, err := terminal.ReadPassword(0)
|
|
if err != nil {
|
|
fmt.Println()
|
|
return "", fmt.Errorf("error reading password: %w", err)
|
|
}
|
|
fmt.Printf("\nRepeat password: ")
|
|
bytePasswordRepeat, err := terminal.ReadPassword(0)
|
|
if err != nil {
|
|
fmt.Println()
|
|
return "", fmt.Errorf("error reading password: %w", err)
|
|
}
|
|
fmt.Println()
|
|
|
|
if !bytes.Equal(bytePassword, bytePasswordRepeat) {
|
|
return "", fmt.Errorf("passwords do not match")
|
|
}
|
|
|
|
p.Password = string(bytePassword)
|
|
}
|
|
|
|
if p.Password == "" {
|
|
return "", fmt.Errorf("empty password supplied")
|
|
}
|
|
|
|
hash, err := bcrypt.GenerateFromPassword([]byte(p.Password), 0)
|
|
if err != nil {
|
|
return "", fmt.Errorf("cannot hash password: %w", err)
|
|
}
|
|
|
|
return string(hash), nil
|
|
}
|