-
Notifications
You must be signed in to change notification settings - Fork 2
/
users.go
150 lines (135 loc) · 4.04 KB
/
users.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
package users
import (
"errors"
"golang.org/x/crypto/bcrypt"
)
type Users struct {
userRepo UserRepositoryInterface
passwordHashingCost int
}
const ERROR_CREATE_USER_USERNAME_ALREADY_TAKEN = "Username already taken"
const ERROR_PASSWORDS_DO_NOT_MATCH = "Passwords do not match"
const ERROR_INVALID_USERNAME_OR_PASSWORD = "Invalid username or password"
const ERROR_UNKNOWN_USER = "Unknown user"
func NewUsers(userRepo UserRepositoryInterface, passwordHashingCost int) *Users {
return &Users{userRepo: userRepo, passwordHashingCost: passwordHashingCost}
}
func (ua *Users) GetUser(userId uint32) (User, error) {
return ua.userRepo.Get(userId)
}
func (ua *Users) ListUsers() ([]User, error) {
return ua.userRepo.List()
}
func (ua *Users) DeleteUser(userID uint32) (User, error) {
return ua.userRepo.Delete(userID)
}
func (ua *Users) AdminSet(userId uint32) (User, error) {
user, err := ua.userRepo.Get(userId)
if err == nil {
if user != (User{}) {
user.admin = true
user, err = ua.userRepo.Save(user)
} else {
return user, errors.New(ERROR_UNKNOWN_USER)
}
}
return user, err
}
func (ua *Users) AdminUnset(userId uint32) (User, error) {
user, err := ua.userRepo.Get(userId)
if err == nil {
if user != (User{}) {
user.admin = false
user, err = ua.userRepo.Save(user)
} else {
return user, errors.New(ERROR_UNKNOWN_USER)
}
}
return user, err
}
func (ua *Users) CreateUser(username string, password string, passwordRepeat string, isAdmin int32) (User, error) {
var newUser User
existingUser, err := ua.userRepo.GetByUsername(username)
if err == nil {
if existingUser == (User{}) {
if password == passwordRepeat {
hashedPassword, err := ua.hashPassword(password)
if err == nil {
newUser = User{Username: username, Password: hashedPassword, admin: isAdmin > 0}
newUser, err = ua.userRepo.Save(newUser)
}
} else {
err = errors.New(ERROR_PASSWORDS_DO_NOT_MATCH)
}
} else {
err = errors.New(ERROR_CREATE_USER_USERNAME_ALREADY_TAKEN)
}
}
return newUser, err
}
func (ua *Users) SetPassword(userId uint32, newPassword string, newPasswordRepeat string) (User, error) {
user, err := ua.userRepo.Get(userId)
if err == nil {
if user != (User{}) {
if newPassword == newPasswordRepeat {
hashedPassword, err := ua.hashPassword(newPassword)
if err == nil {
user.Password = hashedPassword
user, err = ua.userRepo.Save(user)
}
} else {
err = errors.New(ERROR_PASSWORDS_DO_NOT_MATCH)
}
} else {
err = errors.New(ERROR_INVALID_USERNAME_OR_PASSWORD)
}
}
return user, err
}
func (ua *Users) ChangePassword(userId uint32, oldPassword string, newPassword string, newPasswordRepeat string) (User, error) {
user, err := ua.userRepo.Get(userId)
if err == nil {
if user != (User{}) {
if ua.checkPasswordHash(oldPassword, user.Password) {
if newPassword == newPasswordRepeat {
hashedPassword, err := ua.hashPassword(newPassword)
if err == nil {
user.Password = hashedPassword
user, err = ua.userRepo.Save(user)
}
} else {
err = errors.New(ERROR_PASSWORDS_DO_NOT_MATCH)
}
} else {
err = errors.New(ERROR_INVALID_USERNAME_OR_PASSWORD)
}
} else {
err = errors.New(ERROR_INVALID_USERNAME_OR_PASSWORD)
}
}
return user, err
}
func (ua *Users) IsPasswordValid(username string, password string) (User, error) {
var validUser User
userAuth, err := ua.userRepo.GetByUsername(username)
if err == nil {
if userAuth != (User{}) {
if ua.checkPasswordHash(password, userAuth.Password) {
validUser = userAuth
} else {
err = errors.New(ERROR_INVALID_USERNAME_OR_PASSWORD)
}
} else {
err = errors.New(ERROR_INVALID_USERNAME_OR_PASSWORD)
}
}
return validUser, err
}
func (ua *Users) hashPassword(password string) (string, error) {
bytes, err := bcrypt.GenerateFromPassword([]byte(password), ua.passwordHashingCost)
return string(bytes), err
}
func (ua *Users) checkPasswordHash(password string, passwordHash string) bool {
err := bcrypt.CompareHashAndPassword([]byte(passwordHash), []byte(password))
return err == nil
}