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package main
import (
"fmt"
"regexp"
)
var specialsRxp *regexp.Regexp = regexp.MustCompile("[,.\\[\\]!@#$%^&*?_\\(\\)-]")
var numbersRxp *regexp.Regexp = regexp.MustCompile("[0-9]")
func validatePassword(password string) error {
if len(password) < 10 {
return fmt.Errorf("Your password needs to be at least 10 characters long. But was %d characters.", len(password))
}
// check uppercase and lowercase
if match, err := regexp.MatchString("[a-z]", password); err != nil || !match {
return fmt.Errorf("Your password needs at least one lowercase character")
}
if match, err := regexp.MatchString("[A-Z]", password); err != nil || !match {
return fmt.Errorf("Your password needs at least one uppercase character")
}
// check specials + numbers (at least 3)
specials := specialsRxp.FindAllString(password, -1)
numbers := numbersRxp.FindAllString(password, -1)
if len(specials)+len(numbers) < 3 {
return fmt.Errorf("Your password needs at least three special characters or numbers")
}
// call out to password hash check service...
return nil
}
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