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113 lines
2.9 KiB
113 lines
2.9 KiB
// Copyright 2021 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 migrations
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import (
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"crypto/sha256"
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"fmt"
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"golang.org/x/crypto/argon2"
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"golang.org/x/crypto/bcrypt"
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"golang.org/x/crypto/pbkdf2"
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"golang.org/x/crypto/scrypt"
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"xorm.io/builder"
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"xorm.io/xorm"
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)
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func recalculateUserEmptyPWD(x *xorm.Engine) (err error) {
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const (
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algoBcrypt = "bcrypt"
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algoScrypt = "scrypt"
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algoArgon2 = "argon2"
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algoPbkdf2 = "pbkdf2"
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)
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type User struct {
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ID int64 `xorm:"pk autoincr"`
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Passwd string `xorm:"NOT NULL"`
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PasswdHashAlgo string `xorm:"NOT NULL DEFAULT 'argon2'"`
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MustChangePassword bool `xorm:"NOT NULL DEFAULT false"`
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LoginType int
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LoginName string
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Type int
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Salt string `xorm:"VARCHAR(10)"`
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}
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// hashPassword hash password based on algo and salt
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// state 461406070c
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hashPassword := func(passwd, salt, algo string) string {
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var tempPasswd []byte
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switch algo {
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case algoBcrypt:
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tempPasswd, _ = bcrypt.GenerateFromPassword([]byte(passwd), bcrypt.DefaultCost)
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return string(tempPasswd)
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case algoScrypt:
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tempPasswd, _ = scrypt.Key([]byte(passwd), []byte(salt), 65536, 16, 2, 50)
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case algoArgon2:
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tempPasswd = argon2.IDKey([]byte(passwd), []byte(salt), 2, 65536, 8, 50)
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case algoPbkdf2:
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fallthrough
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default:
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tempPasswd = pbkdf2.Key([]byte(passwd), []byte(salt), 10000, 50, sha256.New)
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}
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return fmt.Sprintf("%x", tempPasswd)
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}
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// ValidatePassword checks if given password matches the one belongs to the user.
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// state 461406070c, changed since it's not necessary to be time constant
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ValidatePassword := func(u *User, passwd string) bool {
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tempHash := hashPassword(passwd, u.Salt, u.PasswdHashAlgo)
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if u.PasswdHashAlgo != algoBcrypt && u.Passwd == tempHash {
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return true
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}
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if u.PasswdHashAlgo == algoBcrypt && bcrypt.CompareHashAndPassword([]byte(u.Passwd), []byte(passwd)) == nil {
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return true
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}
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return false
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}
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sess := x.NewSession()
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defer sess.Close()
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const batchSize = 100
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for start := 0; ; start += batchSize {
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users := make([]*User, 0, batchSize)
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if err = sess.Limit(batchSize, start).Where(builder.Neq{"passwd": ""}, 0).Find(&users); err != nil {
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return
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}
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if len(users) == 0 {
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break
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}
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if err = sess.Begin(); err != nil {
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return
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}
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for _, user := range users {
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if ValidatePassword(user, "") {
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user.Passwd = ""
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user.Salt = ""
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user.PasswdHashAlgo = ""
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if _, err = sess.ID(user.ID).Cols("passwd", "salt", "passwd_hash_algo").Update(user); err != nil {
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return err
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}
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}
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}
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if err = sess.Commit(); err != nil {
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return
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}
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}
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// delete salt and algo where password is empty
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_, err = sess.Where(builder.Eq{"passwd": ""}.And(builder.Neq{"salt": ""}.Or(builder.Neq{"passwd_hash_algo": ""}))).
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Cols("salt", "passwd_hash_algo").Update(&User{})
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return err
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}
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