jwt.go

package middleware

import (
	"strconv"
	"time"

	"github.com/flipped-aurora/gin-vue-admin/server/utils"
	"github.com/gin-gonic/gin"
	"github.com/happyanran/freedb/server/global"
	"github.com/happyanran/freedb/server/model/response"
)

func JWTAuth() gin.HandlerFunc {
	return func(c *gin.Context) {
		token := c.Request.Header.Get("x-token")

		if token == "" {
			response.FailWithDetailed(gin.H{"reload": true}, "未登录或非法访问", c)
			c.Abort()
			return
		}

		j := utils.NewJWT()

		// parseToken 解析token包含的信息
		claims, err := j.ParseToken(token)
		if err != nil {
			if err == utils.TokenExpired {
				response.FailWithDetailed(gin.H{"reload": true}, "授权已过期", c)
				c.Abort()
				return
			}

			response.FailWithDetailed(gin.H{"reload": true}, err.Error(), c)
			c.Abort()
			return
		}

		if claims.ExpiresAt-time.Now().Unix() < claims.BufferTime {
			dr, _ := utils.ParseDuration(global.FDB_CONFIG.JWT.ExpiresTime)
			claims.ExpiresAt = time.Now().Add(dr).Unix()
			newToken, _ := j.CreateTokenByOldToken(token, *claims)
			newClaims, _ := j.ParseToken(newToken)
			c.Header("new-token", newToken)
			c.Header("new-expires-at", strconv.FormatInt(newClaims.ExpiresAt, 10))
		}

		c.Set("claims", claims)
		c.Next()
	}
}