76 lines
1.8 KiB
Go
76 lines
1.8 KiB
Go
package jwt
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import (
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"base-go-v2/internal/config"
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"errors"
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"github.com/golang-jwt/jwt/v5"
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"time"
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)
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var (
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ErrTokenExpired = errors.New("token expired")
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ErrTokenInvalid = errors.New("token invalid")
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)
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// CustomClaims 定义自己的 payload 结构
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type CustomClaims struct {
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UserID string `json:"user_id"`
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jwt.RegisteredClaims
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}
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// CreateToken 创建一个 JWT token
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// 支持 config.App.JWT.Expiry == -1 永不过期
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func CreateToken(orgID, userID string) (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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expiry := config.App.JWT.Expiry
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switch {
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case expiry > 0:
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expireAt := time.Now().Add(expiry)
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claims.ExpiresAt = jwt.NewNumericDate(expireAt)
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case expiry == -1:
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// 永不过期，ExpiresAt 设置为 nil
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claims.ExpiresAt = nil
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default:
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// 默认过期时间，例如 1 小时
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expireAt := time.Now().Add(time.Hour)
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claims.ExpiresAt = jwt.NewNumericDate(expireAt)
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}
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token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
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return token.SignedString([]byte(config.App.JWT.Secret))
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}
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// VerifyToken 验证并解析 JWT token
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func VerifyToken(tokenString string) (*CustomClaims, error) {
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signKey := []byte(config.App.JWT.Secret)
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token, err := jwt.ParseWithClaims(tokenString, &CustomClaims{}, func(token *jwt.Token) (interface{}, error) {
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// 校验签名算法
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if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
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return nil, ErrTokenInvalid
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}
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return signKey, nil
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})
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if err != nil {
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return nil, ErrTokenInvalid
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}
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claims, ok := token.Claims.(*CustomClaims)
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if !ok || !token.Valid {
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return nil, ErrTokenInvalid
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}
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// 检查过期：ExpiresAt 为 nil 时永不过期
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if claims.ExpiresAt != nil && time.Now().After(claims.ExpiresAt.Time) {
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return nil, ErrTokenExpired
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}
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return claims, nil
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}
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