77 lines
1.7 KiB
Go
77 lines
1.7 KiB
Go
package utils
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import (
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"fmt"
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"backend/pkg/charsets"
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"golang.org/x/crypto/bcrypt"
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)
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type PasswordUtil interface {
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Hash(password string) (string, error)
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Compare(password, hash string) bool
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Validate(password string) error
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}
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func NewPasswordUtil() PasswordUtil {
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specialChars := `!@#$%^&*()_-+={[}]|\:;"'<,>.?/`
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return &passwordUtil{
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charsetSpecialChars: charsets.NewCharsetFromString(specialChars),
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}
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}
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type passwordUtil struct {
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charsetSpecialChars charsets.Charset
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}
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func (b *passwordUtil) Hash(password string) (string, error) {
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bytes, _ := bcrypt.GenerateFromPassword([]byte(password), 8) //bcrypt.DefaultCost)
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return string(bytes), nil
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}
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func (b *passwordUtil) Compare(password, hash string) bool {
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return nil == bcrypt.CompareHashAndPassword([]byte(hash), []byte(password))
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}
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func (b *passwordUtil) Validate(password string) error {
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if len(password) < 8 {
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return fmt.Errorf("password must contain 8 or more characters")
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}
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charsetUpper := charsets.GetCharset(charsets.CharsetTypeLettersUpper)
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charsetLower := charsets.GetCharset(charsets.CharsetTypeLettersLower)
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lowercaseLettersCount := 0
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uppercaseLettersCount := 0
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specialCharsCount := 0
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for _, v := range password {
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if b.charsetSpecialChars.TestRune(v) {
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specialCharsCount++
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continue
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}
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if charsetUpper.TestRune(v) {
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uppercaseLettersCount++
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continue
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}
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if charsetLower.TestRune(v) {
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lowercaseLettersCount++
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continue
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}
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}
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if lowercaseLettersCount == 0 {
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return fmt.Errorf("password must contain at least 1 lowercase letter")
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}
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if uppercaseLettersCount == 0 {
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return fmt.Errorf("password must contain at least 1 uppercase letter")
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}
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if specialCharsCount == 0 {
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return fmt.Errorf("password must contain at least 1 special character")
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}
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return nil
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}
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