80 lines
1.8 KiB
Go
80 lines
1.8 KiB
Go
package utils
|
|
|
|
import (
|
|
"errors"
|
|
"time"
|
|
|
|
"github.com/golang-jwt/jwt/v5"
|
|
)
|
|
|
|
var (
|
|
ErrInvalidToken = errors.New("invalid token")
|
|
ErrExpiredToken = errors.New("token has expired")
|
|
)
|
|
|
|
// Claims JWT 声明
|
|
type Claims struct {
|
|
UserID uint `json:"user_id"`
|
|
Username string `json:"username"`
|
|
Role string `json:"role"`
|
|
jwt.RegisteredClaims
|
|
}
|
|
|
|
// JWTConfig JWT 配置
|
|
type JWTConfig struct {
|
|
Secret string
|
|
ExpireTime int // 过期时间（小时）
|
|
}
|
|
|
|
// JWTManager JWT 管理器
|
|
type JWTManager struct {
|
|
config JWTConfig
|
|
}
|
|
|
|
// NewJWTManager 创建 JWT 管理器
|
|
func NewJWTManager(secret string, expireTime int) *JWTManager {
|
|
return &JWTManager{
|
|
config: JWTConfig{
|
|
Secret: secret,
|
|
ExpireTime: expireTime,
|
|
},
|
|
}
|
|
}
|
|
|
|
// GenerateToken 生成 JWT Token
|
|
func (m *JWTManager) GenerateToken(userID uint, username, role string) (string, error) {
|
|
claims := &Claims{
|
|
UserID: userID,
|
|
Username: username,
|
|
Role: role,
|
|
RegisteredClaims: jwt.RegisteredClaims{
|
|
ExpiresAt: jwt.NewNumericDate(time.Now().Add(time.Duration(m.config.ExpireTime) * time.Hour)),
|
|
IssuedAt: jwt.NewNumericDate(time.Now()),
|
|
NotBefore: jwt.NewNumericDate(time.Now()),
|
|
Issuer: "novablog",
|
|
},
|
|
}
|
|
|
|
token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
|
|
return token.SignedString([]byte(m.config.Secret))
|
|
}
|
|
|
|
// ParseToken 解析 JWT Token
|
|
func (m *JWTManager) ParseToken(tokenString string) (*Claims, error) {
|
|
token, err := jwt.ParseWithClaims(tokenString, &Claims{}, func(token *jwt.Token) (interface{}, error) {
|
|
return []byte(m.config.Secret), nil
|
|
})
|
|
|
|
if err != nil {
|
|
if errors.Is(err, jwt.ErrTokenExpired) {
|
|
return nil, ErrExpiredToken
|
|
}
|
|
return nil, ErrInvalidToken
|
|
}
|
|
|
|
if claims, ok := token.Claims.(*Claims); ok && token.Valid {
|
|
return claims, nil
|
|
}
|
|
|
|
return nil, ErrInvalidToken
|
|
} |