69 lines
1.7 KiB
Go
69 lines
1.7 KiB
Go
package utils
|
|
|
|
import (
|
|
"fmt"
|
|
"nCovTrack-Backend/global"
|
|
"time"
|
|
|
|
"github.com/golang-jwt/jwt/v4"
|
|
)
|
|
|
|
var JWT_KEY = []byte(global.ServerSettings.Jwt.Secret)
|
|
|
|
// GenerateToken Generate token for user
|
|
// Return: token generated
|
|
func GenerateToken(claims jwt.MapClaims) string {
|
|
claims["exp"] = time.Now().Add(15 * 24 * time.Hour).Unix()
|
|
claims["iat"] = time.Now().Unix()
|
|
token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
|
|
tokenStr, err := token.SignedString(JWT_KEY)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
return tokenStr
|
|
}
|
|
|
|
// RenewToken Renew user's token
|
|
// tokenStr: user request token
|
|
// Return:
|
|
// BlankString: token is invalid or token is expired out of allowed time;
|
|
// OldToken: token is not need to renew;
|
|
// NewToken: token is renew;
|
|
func RenewToken(tokenStr string) string {
|
|
token, err := jwt.Parse(tokenStr, func(t *jwt.Token) (interface{}, error) {
|
|
return JWT_KEY, nil
|
|
})
|
|
|
|
// Token is invalid
|
|
if err != nil {
|
|
switch err.(*jwt.ValidationError).Errors {
|
|
case jwt.ValidationErrorSignatureInvalid:
|
|
return ""
|
|
case jwt.ValidationErrorIssuedAt:
|
|
return ""
|
|
}
|
|
}
|
|
|
|
claims := token.Claims.(jwt.MapClaims)
|
|
expireAt := time.Unix(int64(claims["exp"].(float64)), 0)
|
|
expireDuration := expireAt.Sub(time.Now())
|
|
|
|
// Token is out of allow expire duration
|
|
if expireDuration.Hours() < -float64(global.ServerSettings.Jwt.RenewExpireDays*24) {
|
|
return ""
|
|
}
|
|
// Token not need renew
|
|
if expireDuration.Hours() > float64(global.ServerSettings.Jwt.RenewAheadDays*24) {
|
|
return tokenStr
|
|
}
|
|
fmt.Println(expireDuration)
|
|
|
|
claims["exp"] = time.Now().Add(15 * 24 * time.Hour).Unix()
|
|
token = jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
|
|
tokenStr, err = token.SignedString(JWT_KEY)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
return tokenStr
|
|
}
|