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>tokarchuk/v1.17
Maxim Tkachenko
5 years ago
committed by
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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