forgejo/modules/auth/password/password.go
KN4CK3R f8b471ace1
Unify user update methods (#28733)
Fixes #28660
Fixes an admin api bug related to `user.LoginSource`
Fixed `/user/emails` response not identical to GitHub api

This PR unifies the user update methods. The goal is to keep the logic
only at one place (having audit logs in mind). For example, do the
password checks only in one method not everywhere a password is updated.

After that PR is merged, the user creation should be next.
2024-02-04 13:29:09 +00:00

135 lines
3.2 KiB
Go

// Copyright 2019 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package password
import (
"bytes"
"context"
"crypto/rand"
"errors"
"math/big"
"strings"
"sync"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/translation"
)
var (
ErrComplexity = errors.New("password not complex enough")
ErrMinLength = errors.New("password not long enough")
)
// complexity contains information about a particular kind of password complexity
type complexity struct {
ValidChars string
TrNameOne string
}
var (
matchComplexityOnce sync.Once
validChars string
requiredList []complexity
charComplexities = map[string]complexity{
"lower": {
`abcdefghijklmnopqrstuvwxyz`,
"form.password_lowercase_one",
},
"upper": {
`ABCDEFGHIJKLMNOPQRSTUVWXYZ`,
"form.password_uppercase_one",
},
"digit": {
`0123456789`,
"form.password_digit_one",
},
"spec": {
` !"#$%&'()*+,-./:;<=>?@[\]^_{|}~` + "`",
"form.password_special_one",
},
}
)
// NewComplexity for preparation
func NewComplexity() {
matchComplexityOnce.Do(func() {
setupComplexity(setting.PasswordComplexity)
})
}
func setupComplexity(values []string) {
if len(values) != 1 || values[0] != "off" {
for _, val := range values {
if complex, ok := charComplexities[val]; ok {
validChars += complex.ValidChars
requiredList = append(requiredList, complex)
}
}
if len(requiredList) == 0 {
// No valid character classes found; use all classes as default
for _, complex := range charComplexities {
validChars += complex.ValidChars
requiredList = append(requiredList, complex)
}
}
}
if validChars == "" {
// No complexities to check; provide a sensible default for password generation
validChars = charComplexities["lower"].ValidChars + charComplexities["upper"].ValidChars + charComplexities["digit"].ValidChars
}
}
// IsComplexEnough return True if password meets complexity settings
func IsComplexEnough(pwd string) bool {
NewComplexity()
if len(validChars) > 0 {
for _, req := range requiredList {
if !strings.ContainsAny(req.ValidChars, pwd) {
return false
}
}
}
return true
}
// Generate a random password
func Generate(n int) (string, error) {
NewComplexity()
buffer := make([]byte, n)
max := big.NewInt(int64(len(validChars)))
for {
for j := 0; j < n; j++ {
rnd, err := rand.Int(rand.Reader, max)
if err != nil {
return "", err
}
buffer[j] = validChars[rnd.Int64()]
}
if err := IsPwned(context.Background(), string(buffer)); err != nil {
if errors.Is(err, ErrIsPwned) {
continue
}
return "", err
}
if IsComplexEnough(string(buffer)) && string(buffer[0]) != " " && string(buffer[n-1]) != " " {
return string(buffer), nil
}
}
}
// BuildComplexityError builds the error message when password complexity checks fail
func BuildComplexityError(locale translation.Locale) string {
var buffer bytes.Buffer
buffer.WriteString(locale.Tr("form.password_complexity"))
buffer.WriteString("<ul>")
for _, c := range requiredList {
buffer.WriteString("<li>")
buffer.WriteString(locale.Tr(c.TrNameOne))
buffer.WriteString("</li>")
}
buffer.WriteString("</ul>")
return buffer.String()
}