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
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
/* openbills - Server for web based Libre Billing Software
* Copyright (C) 2023 Vidhu Kant Sharma <vidhukant@vidhukant.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package auth
import (
"github.com/gin-gonic/gin"
"github.com/golang-jwt/jwt/v5"
"github.com/spf13/viper"
"golang.org/x/crypto/bcrypt"
"vidhukant.com/openbills/user"
"net/http"
"time"
"vidhukant.com/openbills/errors"
)
var (
COST int
AUTH_KEY, REFRESH_KEY []byte
)
func init() {
COST = viper.GetInt("cryptography.password_hashing_cost")
AUTH_KEY = []byte(viper.GetString("cryptography.auth_key"))
REFRESH_KEY = []byte(viper.GetString("cryptography.refresh_key"))
}
func handleSignUp (ctx *gin.Context) {
var user user.User
ctx.Bind(&user)
var err error
// hash password
var bytes []byte
bytes, err = bcrypt.GenerateFromPassword([]byte(user.Password), 14)
if err != nil {
// TODO: handle potential errors
ctx.Error(err)
ctx.Abort()
return
}
user.Password = string(bytes)
err = user.Create()
if err != nil {
ctx.Error(err)
ctx.Abort()
return
}
// remove password hash from response
user.Password = ""
ctx.JSON(http.StatusOK, gin.H{
"message": "success",
"data": user,
})
}
func handleSignIn (ctx *gin.Context) {
var req LoginReq
ctx.Bind(&req)
var err error
var u user.User
err = user.CheckPassword(&u, req.AccountName, req.Method, req.Password)
if err != nil {
// TODO: handle potential errors
ctx.Error(err)
ctx.Abort()
return
}
authToken, err := jwt.NewWithClaims(jwt.SigningMethodHS256,
AuthClaims {
jwt.RegisteredClaims {
IssuedAt: jwt.NewNumericDate(time.Now()),
ExpiresAt: jwt.NewNumericDate(time.Now().Add(time.Minute * 2)),
},
u.ID,
},
).SignedString(AUTH_KEY)
if err != nil {
// TODO: handle potential errors
ctx.Error(err)
ctx.Abort()
return
}
refreshToken, err := jwt.NewWithClaims(jwt.SigningMethodHS256,
AuthClaims {
jwt.RegisteredClaims {
IssuedAt: jwt.NewNumericDate(time.Now()),
ExpiresAt: jwt.NewNumericDate(time.Now().Add(time.Hour * 6)),
},
u.ID,
},
).SignedString(REFRESH_KEY)
if err != nil {
// TODO: handle potential errors
ctx.Error(err)
ctx.Abort()
return
}
// remove password hash from response
u.Password = ""
ctx.JSON(http.StatusOK, gin.H{
"auth_token": authToken,
"refresh_token": refreshToken,
"message": "success",
"data": u,
})
}
func handleRefresh (ctx *gin.Context) {
var req RefreshReq
ctx.Bind(&req)
tk, _ := jwt.ParseWithClaims(req.RefreshToken, &AuthClaims{}, func (token *jwt.Token) (interface{}, error) {
return []byte(REFRESH_KEY), nil
})
claims, ok := tk.Claims.(*AuthClaims)
if !ok {
ctx.Error(errors.ErrUnauthorized)
ctx.Abort()
return
}
if !tk.Valid {
eat := claims.ExpiresAt.Unix()
if eat != 0 && eat < time.Now().Unix() {
ctx.Error(errors.ErrSessionExpired)
} else {
ctx.Error(errors.ErrUnauthorized)
}
ctx.Abort()
return
}
// TODO: if token is valid, check if user even exists before generating authToken
authToken, err := jwt.NewWithClaims(jwt.SigningMethodHS256,
AuthClaims {
jwt.RegisteredClaims {
IssuedAt: jwt.NewNumericDate(time.Now()),
ExpiresAt: jwt.NewNumericDate(time.Now().Add(time.Minute * 2)),
},
claims.UserID,
},
).SignedString(AUTH_KEY)
if err != nil {
// TODO: handle potential errors
ctx.Error(err)
ctx.Abort()
return
}
ctx.JSON(http.StatusOK, gin.H{
"auth_token": authToken,
"message": "success",
//"data": u,
})
}
|
