108 lines
2.3 KiB
Go
108 lines
2.3 KiB
Go
package jwtx
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import (
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"allapp/conf"
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"sync"
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"time"
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"github.com/golang-jwt/jwt/v4"
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)
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type CustomClaims struct {
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UserID int64 `json:"user_id"`
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jwt.RegisteredClaims
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}
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type TokenResult struct {
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Claims *CustomClaims
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IsValid bool
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IsExpired bool
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}
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type jwtManager struct {
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secret string
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accessExpiry time.Duration
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refreshExpiry time.Duration
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}
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var (
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manager *jwtManager
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once sync.Once
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)
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// InitJwt 初始化全局 JWT 配置，只能调用一次
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func InitJwt() {
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once.Do(func() {
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manager = &jwtManager{
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secret: conf.GetConf().JWT.Secret,
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accessExpiry: conf.GetConf().JWT.AccessExpiry,
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refreshExpiry: conf.GetConf().JWT.RefreshExpiry,
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}
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})
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}
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// CreateAccessToken 全局函数创建 Access Token
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func CreateAccessToken(userID int64) (string, error) {
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return manager.createToken(userID, manager.accessExpiry)
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}
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// CreateRefreshToken 全局函数创建 Refresh Token
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func CreateRefreshToken(userID int64) (string, error) {
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return manager.createToken(userID, manager.refreshExpiry)
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}
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// VerifyToken 全局函数验证 Token
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func VerifyToken(tokenString string) TokenResult {
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result := TokenResult{IsValid: false, IsExpired: false}
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if tokenString == "" || manager == nil {
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return result
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}
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token, err := jwt.ParseWithClaims(tokenString, &CustomClaims{}, func(token *jwt.Token) (interface{}, error) {
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return []byte(manager.secret), nil
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})
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if token == nil {
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return result
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}
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claims, ok := token.Claims.(*CustomClaims)
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if !ok {
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return result
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}
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if err != nil || !token.Valid {
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return result
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}
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result.Claims = claims
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result.IsValid = true
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if claims.ExpiresAt != nil && time.Now().After(claims.ExpiresAt.Time) {
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result.IsExpired = true
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}
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return result
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}
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// 内部方法，生成 Token
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func (j *jwtManager) createToken(userID int64, expiry time.Duration) (string, error) {
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claims := &CustomClaims{
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UserID: userID,
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RegisteredClaims: jwt.RegisteredClaims{
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IssuedAt: jwt.NewNumericDate(time.Now()),
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},
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}
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switch {
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case expiry > 0:
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claims.ExpiresAt = jwt.NewNumericDate(time.Now().Add(expiry))
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case expiry == -1:
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claims.ExpiresAt = nil // 永不过期
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default:
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claims.ExpiresAt = jwt.NewNumericDate(time.Now().Add(time.Hour))
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}
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token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
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return token.SignedString([]byte(j.secret))
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}
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