package middleware
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import (
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"errors"
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"github.com/golang-jwt/jwt/v4"
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"strconv"
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"time"
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"srm/utils"
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"srm/global"
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"srm/model/common/response"
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"srm/model/system"
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"srm/service"
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"github.com/gin-gonic/gin"
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"go.uber.org/zap"
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)
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var jwtService = service.ServiceGroupApp.SystemServiceGroup.JwtService
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func JWTAuth() gin.HandlerFunc {
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return func(c *gin.Context) {
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// 我们这里jwt鉴权取头部信息 x-token 登录时回返回token信息 这里前端需要把token存储到cookie或者本地localStorage中 不过需要跟后端协商过期时间 可以约定刷新令牌或者重新登录
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token := c.Request.Header.Get("x-token")
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if token == "" {
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response.FailWithDetailed(gin.H{"reload": true}, "未登录或非法访问", c)
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c.Abort()
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return
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}
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if jwtService.IsBlacklist(token) {
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response.FailWithDetailed(gin.H{"reload": true}, "您的帐户异地登陆或令牌失效", c)
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c.Abort()
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return
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}
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j := utils.NewJWT()
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// parseToken 解析token包含的信息
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claims, err := j.ParseToken(token)
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if err != nil {
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if errors.Is(err, utils.TokenExpired) {
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response.FailWithDetailed(gin.H{"reload": true}, "授权已过期", c)
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c.Abort()
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return
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}
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response.FailWithDetailed(gin.H{"reload": true}, err.Error(), c)
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c.Abort()
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return
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}
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// 已登录用户被管理员禁用 需要使该用户的jwt失效 此处比较消耗性能 如果需要 请自行打开
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// 用户被删除的逻辑 需要优化 此处比较消耗性能 如果需要 请自行打开
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//if user, err := userService.FindUserByUuid(claims.UUID.String()); err != nil || user.Enable == 2 {
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// _ = jwtService.JsonInBlacklist(system.JwtBlacklist{Jwt: token})
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// response.FailWithDetailed(gin.H{"reload": true}, err.Error(), c)
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// c.Abort()
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//}
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if claims.ExpiresAt.Unix()-time.Now().Unix() < claims.BufferTime {
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dr, _ := utils.ParseDuration(global.GVA_CONFIG.JWT.ExpiresTime)
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claims.ExpiresAt = jwt.NewNumericDate(time.Now().Add(dr))
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newToken, _ := j.CreateTokenByOldToken(token, *claims)
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newClaims, _ := j.ParseToken(newToken)
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c.Header("new-token", newToken)
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c.Header("new-expires-at", strconv.FormatInt(newClaims.ExpiresAt.Unix(), 10))
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if global.GVA_CONFIG.System.UseMultipoint {
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RedisJwtToken, err := jwtService.GetRedisJWT(newClaims.Username)
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if err != nil {
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global.GVA_LOG.Error("get redis jwt failed", zap.Error(err))
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} else { // 当之前的取成功时才进行拉黑操作
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_ = jwtService.JsonInBlacklist(system.JwtBlacklist{Jwt: RedisJwtToken})
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}
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// 无论如何都要记录当前的活跃状态
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_ = jwtService.SetRedisJWT(newToken, newClaims.Username)
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}
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}
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c.Set("claims", claims)
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c.Next()
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}
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}
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