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
|
package auth
import (
"fmt"
"net/http"
"os"
"strings"
"github.com/golang-jwt/jwt/v5"
"github.com/joho/godotenv"
)
func init() {
godotenv.Load()
}
var (
jwtsecret = []byte(os.Getenv("JWT_SECRET"))
algo = string(os.Getenv("JWT_ALGO"))
)
func validateJWT(tokenString string, expectedAlg string) (bool, error) {
token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
return nil, fmt.Errorf("invalid token: %v", token.Header["alg"])
}
if token.Header["alg"] != expectedAlg {
return nil, fmt.Errorf("incorrect alg: %v", token.Header["alg"])
}
return jwtsecret, nil
})
if err != nil || !token.Valid {
return false, err
}
if _, ok := token.Claims.(jwt.MapClaims); ok && token.Valid {
return true, nil
}
return false, fmt.Errorf("invalid token")
}
func Verifyrequest(r *http.Request) bool {
authHeader := r.Header.Get("Authorization")
if authHeader == "" {
return false
}
// expected: "Bearer <token>"
authSplit := strings.Split(authHeader, " ")
if len(authSplit) != 2 || authSplit[0] != "Bearer" {
return false
}
token := authSplit[1]
isValid, _ := validateJWT(token, algo)
return isValid
}
|
