storj/pkg/satellite/validation.go

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// Copyright (C) 2018 Storj Labs, Inc.
// See LICENSE for copying information.
package satellite
import (
"unicode"
"github.com/zeebo/errs"
"storj.io/storj/pkg/utils"
)
const (
passMinLength = 6
passMinNumberCount = 1
passMinAZCount = 1
)
// ErrValidation validation related error class
var ErrValidation = errs.Class("validation error")
// validationError is slice of ErrValidation class errors
type validationErrors []error
// Add new ErrValidation err
func (validation *validationErrors) Add(format string, args ...interface{}) {
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*validation = append(*validation, ErrValidation.New(format, args...))
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}
// AddWrap adds new ErrValidation wrapped err
func (validation *validationErrors) AddWrap(err error) {
*validation = append(*validation, ErrValidation.Wrap(err))
}
// Combine returns combined validation errors
func (validation *validationErrors) Combine() error {
return utils.CombineErrors(*validation...)
}
// countNumerics returns total number of digits in string
func countNumerics(s string) int {
total := 0
for _, r := range s {
if unicode.IsDigit(r) {
total++
}
}
return total
}
// countLetters returns total number of letters in string
func countLetters(s string) int {
total := 0
for _, r := range s {
if unicode.IsLetter(r) {
total++
}
}
return total
}
// validatePassword validates password
func validatePassword(pass string) error {
var errs validationErrors
if len(pass) < passMinLength {
errs.Add("password can't be less than %d characters", passMinLength)
}
if countNumerics(pass) < passMinNumberCount {
errs.Add("password should contain at least %d digits", passMinNumberCount)
}
if countLetters(pass) < passMinAZCount {
errs.Add("password should contain at least %d alphabetic characters", passMinAZCount)
}
return errs.Combine()
}