You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

143 lines
4.2 KiB

package middleware
import (
"errors"
"gin-vue-admin/global"
"gin-vue-admin/model"
"gin-vue-admin/model/request"
"gin-vue-admin/model/response"
"gin-vue-admin/service"
"github.com/dgrijalva/jwt-go"
"github.com/gin-gonic/gin"
"go.uber.org/zap"
"strconv"
"time"
)
func JWTAuth() gin.HandlerFunc {
return func(c *gin.Context) {
// 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
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
}
if service.IsBlacklist(token) {
response.FailWithDetailed(gin.H{"reload": true}, "您的帐户异地登陆或令牌失效", c)
c.Abort()
return
}
j := NewJWT()
// parseToken 解析token包含的信息
claims, err := j.ParseToken(token)
if err != nil {
if err == 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 err, _ = service.FindUserByUuid(claims.UUID.String()); err != nil {
_ = service.JsonInBlacklist(model.JwtBlacklist{Jwt: token})
response.FailWithDetailed(gin.H{"reload": true}, err.Error(), c)
c.Abort()
}
if claims.ExpiresAt-time.Now().Unix() < claims.BufferTime {
claims.ExpiresAt = time.Now().Unix() + 60*60*24*7
newToken, _ := j.CreateToken(*claims)
newClaims, _ := j.ParseToken(newToken)
c.Header("new-token", newToken)
c.Header("new-expires-at", strconv.FormatInt(newClaims.ExpiresAt, 10))
if global.GVA_CONFIG.System.UseMultipoint {
err, RedisJwtToken := service.GetRedisJWT(newClaims.Username)
if err != nil {
global.GVA_LOG.Error("get redis jwt failed", zap.Any("err", err))
} else { // 当之前的取成功时才进行拉黑操作
_ = service.JsonInBlacklist(model.JwtBlacklist{Jwt: RedisJwtToken})
}
// 无论如何都要记录当前的活跃状态
_ = service.SetRedisJWT(newToken, newClaims.Username)
}
}
c.Set("claims", claims)
c.Next()
}
}
type JWT struct {
SigningKey []byte
}
var (
TokenExpired = errors.New("Token is expired")
TokenNotValidYet = errors.New("Token not active yet")
TokenMalformed = errors.New("That's not even a token")
TokenInvalid = errors.New("Couldn't handle this token:")
)
func NewJWT() *JWT {
return &JWT{
[]byte(global.GVA_CONFIG.JWT.SigningKey),
}
}
// 创建一个token
func (j *JWT) CreateToken(claims request.CustomClaims) (string, error) {
token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
return token.SignedString(j.SigningKey)
}
// 解析 token
func (j *JWT) ParseToken(tokenString string) (*request.CustomClaims, error) {
token, err := jwt.ParseWithClaims(tokenString, &request.CustomClaims{}, func(token *jwt.Token) (i interface{}, e error) {
return j.SigningKey, nil
})
if err != nil {
if ve, ok := err.(*jwt.ValidationError); ok {
if ve.Errors&jwt.ValidationErrorMalformed != 0 {
return nil, TokenMalformed
} else if ve.Errors&jwt.ValidationErrorExpired != 0 {
// Token is expired
return nil, TokenExpired
} else if ve.Errors&jwt.ValidationErrorNotValidYet != 0 {
return nil, TokenNotValidYet
} else {
return nil, TokenInvalid
}
}
}
if token != nil {
if claims, ok := token.Claims.(*request.CustomClaims); ok && token.Valid {
return claims, nil
}
return nil, TokenInvalid
} else {
return nil, TokenInvalid
}
}
// 更新token
//func (j *JWT) RefreshToken(tokenString string) (string, error) {
// jwt.TimeFunc = func() time.Time {
// return time.Unix(0, 0)
// }
// token, err := jwt.ParseWithClaims(tokenString, &request.CustomClaims{}, func(token *jwt.Token) (interface{}, error) {
// return j.SigningKey, nil
// })
// if err != nil {
// return "", err
// }
// if claims, ok := token.Claims.(*request.CustomClaims); ok && token.Valid {
// jwt.TimeFunc = time.Now
// claims.StandardClaims.ExpiresAt = time.Now().Unix() + 60*60*24*7
// return j.CreateToken(*claims)
// }
// return "", TokenInvalid
//}