13

middleware/auth.go

@@ -0,0 +1,68 @@
+package middleware
+
+import (
+	"strings"
+	"yuyue/utils"
+
+	"github.com/gofiber/fiber/v2"
+	"github.com/golang-jwt/jwt/v5"
+)
+
+// jwtSecret 在 jwt.go 中定义
+
+func AuthMiddleware() fiber.Handler {
+	return func(c *fiber.Ctx) error {
+		authHeader := c.Get("Authorization")
+		if authHeader == "" {
+			return utils.Unauthorized(c, "缺少认证信息")
+		}
+
+		tokenString := strings.Replace(authHeader, "Bearer ", "", 1)
+
+		token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
+			return jwtSecret, nil
+		})
+
+		if err != nil || !token.Valid {
+			return utils.Unauthorized(c, "无效的认证令牌")
+		}
+
+		if claims, ok := token.Claims.(jwt.MapClaims); ok {
+			c.Locals("user_id", claims["user_id"])
+			c.Locals("username", claims["username"])
+			c.Locals("role", claims["role"])
+		}
+
+		return c.Next()
+	}
+}
+
+func AdminMiddleware() fiber.Handler {
+	return func(c *fiber.Ctx) error {
+		role := c.Locals("role")
+		if role != "admin" {
+			return utils.Unauthorized(c, "需要管理员权限")
+		}
+		return c.Next()
+	}
+}
+
+func GetUserID(c *fiber.Ctx) uint {
+	userID := c.Locals("user_id")
+	if userID != nil {
+		if id, ok := userID.(float64); ok {
+			return uint(id)
+		}
+	}
+	return 0
+}
+
+func GetUserRole(c *fiber.Ctx) string {
+	role := c.Locals("role")
+	if role != nil {
+		if r, ok := role.(string); ok {
+			return r
+		}
+	}
+	return ""
+}

middleware/jwt.go

@@ -0,0 +1,39 @@
+package middleware
+
+import (
+	"time"
+	"yuyue/models"
+
+	"github.com/golang-jwt/jwt/v5"
+	"golang.org/x/crypto/bcrypt"
+)
+
+var jwtSecret = []byte("your-secret-key")
+
+type Claims struct {
+	UserID   uint   `json:"user_id"`
+	Username string `json:"username"`
+	Role     string `json:"role"`
+	jwt.RegisteredClaims
+}
+
+func GenerateToken(user *models.User) (string, error) {
+	expirationTime := time.Now().Add(24 * time.Hour)
+
+	claims := &Claims{
+		UserID: user.ID,
+		Role:   user.Role,
+		RegisteredClaims: jwt.RegisteredClaims{
+			ExpiresAt: jwt.NewNumericDate(expirationTime),
+			IssuedAt:  jwt.NewNumericDate(time.Now()),
+		},
+	}
+
+	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
+	return token.SignedString(jwtSecret)
+}
+
+func HashPassword(password string) (string, error) {
+	bytes, err := bcrypt.GenerateFromPassword([]byte(password), 14)
+	return string(bytes), err
+}