lan
4d8f2ec997
Set up project files and add .gitignore to exclude local build/runtime artifacts. Made-with: Cursor
106 lines
2.4 KiB
Go
106 lines
2.4 KiB
Go
package jwt
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import (
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"errors"
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"time"
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"github.com/golang-jwt/jwt/v5"
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)
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var (
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ErrInvalidToken = errors.New("invalid token")
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ErrExpiredToken = errors.New("token has expired")
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)
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// Claims JWT 声明
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type Claims struct {
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UserID string `json:"user_id"`
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Username string `json:"username"`
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jwt.RegisteredClaims
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}
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// JWT JWT工具
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type JWT struct {
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secretKey string
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accessTokenExpire time.Duration
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refreshTokenExpire time.Duration
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}
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// New 创建JWT实例
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func New(secret string, accessExpire, refreshExpire time.Duration) *JWT {
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return &JWT{
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secretKey: secret,
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accessTokenExpire: accessExpire,
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refreshTokenExpire: refreshExpire,
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}
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}
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// GenerateAccessToken 生成访问令牌
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func (j *JWT) GenerateAccessToken(userID, username string) (string, error) {
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now := time.Now()
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claims := Claims{
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UserID: userID,
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Username: username,
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RegisteredClaims: jwt.RegisteredClaims{
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ExpiresAt: jwt.NewNumericDate(now.Add(j.accessTokenExpire)),
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IssuedAt: jwt.NewNumericDate(now),
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NotBefore: jwt.NewNumericDate(now),
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Issuer: "carrot_bbs",
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},
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}
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token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
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return token.SignedString([]byte(j.secretKey))
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}
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// GenerateRefreshToken 生成刷新令牌
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func (j *JWT) GenerateRefreshToken(userID, username string) (string, error) {
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now := time.Now()
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claims := Claims{
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UserID: userID,
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Username: username,
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RegisteredClaims: jwt.RegisteredClaims{
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ExpiresAt: jwt.NewNumericDate(now.Add(j.refreshTokenExpire)),
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IssuedAt: jwt.NewNumericDate(now),
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NotBefore: jwt.NewNumericDate(now),
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Issuer: "carrot_bbs",
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ID: "refresh",
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},
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}
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token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
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return token.SignedString([]byte(j.secretKey))
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}
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// ParseToken 解析令牌
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func (j *JWT) ParseToken(tokenString string) (*Claims, error) {
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token, err := jwt.ParseWithClaims(tokenString, &Claims{}, func(token *jwt.Token) (interface{}, error) {
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return []byte(j.secretKey), nil
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})
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if err != nil {
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return nil, err
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}
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if claims, ok := token.Claims.(*Claims); ok && token.Valid {
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return claims, nil
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}
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return nil, ErrInvalidToken
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}
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// ValidateToken 验证令牌
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func (j *JWT) ValidateToken(tokenString string) error {
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claims, err := j.ParseToken(tokenString)
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if err != nil {
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return err
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}
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// 检查是否是刷新令牌
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if claims.ID == "refresh" {
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return errors.New("cannot use refresh token as access token")
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}
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return nil
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}
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