Password Complexity Checks (#6230)
Add password complexity checks. The default settings require a lowercase, uppercase, number and a special character within passwords. Co-Authored-By: T-M-A <maxim.tkachenko@gmail.com> Co-Authored-By: Lanre Adelowo <adelowomailbox@gmail.com> Co-Authored-By: guillep2k <18600385+guillep2k@users.noreply.github.com> Co-Authored-By: Lauris BH <lauris@nix.lv>release
Maxim Tkachenko
zeripath
parent
f9aba9ba0f
commit
db657192d0
@ -0,0 +1,73 @@
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// Copyright 2019 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package password
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import (
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"crypto/rand"
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"math/big"
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"regexp"
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"sync"
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"code.gitea.io/gitea/modules/setting"
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)
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var matchComplexities = map[string]regexp.Regexp{}
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var matchComplexityOnce sync.Once
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var validChars string
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var validComplexities = map[string]string{
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"lower": "abcdefghijklmnopqrstuvwxyz",
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"upper": "ABCDEFGHIJKLMNOPQRSTUVWXYZ",
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"digit": "0123456789",
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"spec": `][ !"#$%&'()*+,./:;<=>?@\^_{|}~` + "`-",
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}
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// NewComplexity for preparation
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func NewComplexity() {
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matchComplexityOnce.Do(func() {
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if len(setting.PasswordComplexity) > 0 {
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for key, val := range setting.PasswordComplexity {
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matchComplexity := regexp.MustCompile(val)
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matchComplexities[key] = *matchComplexity
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validChars += validComplexities[key]
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}
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} else {
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for _, val := range validComplexities {
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validChars += val
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}
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}
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})
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}
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// IsComplexEnough return True if password is Complexity
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func IsComplexEnough(pwd string) bool {
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if len(setting.PasswordComplexity) > 0 {
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NewComplexity()
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for _, val := range matchComplexities {
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if !val.MatchString(pwd) {
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return false
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}
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}
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}
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return true
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}
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// Generate a random password
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func Generate(n int) (string, error) {
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NewComplexity()
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buffer := make([]byte, n)
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max := big.NewInt(int64(len(validChars)))
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for {
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for j := 0; j < n; j++ {
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rnd, err := rand.Int(rand.Reader, max)
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if err != nil {
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return "", err
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}
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buffer[j] = validChars[rnd.Int64()]
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}
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if IsComplexEnough(string(buffer)) && string(buffer[0]) != " " && string(buffer[n-1]) != " " {
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return string(buffer), nil
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}
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}
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}
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