89 lines
2.7 KiB
Go
89 lines
2.7 KiB
Go
|
package utils
|
||
|
|
|
||
|
|
import (
|
||
|
|
"errors"
|
||
|
|
"time"
|
||
|
|
|
||
|
|
jwt "github.com/golang-jwt/jwt/v4"
|
||
|
|
|
||
|
|
"miniapp/global"
|
||
|
|
"miniapp/model/system/request"
|
||
|
|
)
|
||
|
|
|
||
|
|
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),
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func (j *JWT) CreateClaims(baseClaims request.BaseClaims) request.CustomClaims {
|
||
|
|
bf, _ := ParseDuration(global.GVA_CONFIG.JWT.BufferTime)
|
||
|
|
ep, _ := ParseDuration(global.GVA_CONFIG.JWT.ExpiresTime)
|
||
|
|
claims := request.CustomClaims{
|
||
|
|
BaseClaims: baseClaims,
|
||
|
|
BufferTime: int64(bf / time.Second), // 缓冲时间1天 缓冲时间内会获得新的token刷新令牌 此时一个用户会存在两个有效令牌 但是前端只留一个 另一个会丢失
|
||
|
|
RegisteredClaims: jwt.RegisteredClaims{
|
||
|
|
Audience: jwt.ClaimStrings{"GVA"}, // 受众
|
||
|
|
NotBefore: jwt.NewNumericDate(time.Now().Add(-1000)), // 签名生效时间
|
||
|
|
ExpiresAt: jwt.NewNumericDate(time.Now().Add(ep)), // 过期时间 7天 配置文件
|
||
|
|
Issuer: global.GVA_CONFIG.JWT.Issuer, // 签名的发行者
|
||
|
|
},
|
||
|
|
}
|
||
|
|
return claims
|
||
|
|
}
|
||
|
|
|
||
|
|
// 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)
|
||
|
|
}
|
||
|
|
|
||
|
|
// CreateTokenByOldToken 旧token 换新token 使用归并回源避免并发问题
|
||
|
|
func (j *JWT) CreateTokenByOldToken(oldToken string, claims request.CustomClaims) (string, error) {
|
||
|
|
v, err, _ := global.GVA_Concurrency_Control.Do("JWT:"+oldToken, func() (interface{}, error) {
|
||
|
|
return j.CreateToken(claims)
|
||
|
|
})
|
||
|
|
return v.(string), err
|
||
|
|
}
|
||
|
|
|
||
|
|
// 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
|
||
|
|
}
|
||
|
|
}
|