92 lines
2.3 KiB
Go
92 lines
2.3 KiB
Go
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package auth
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import (
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"fmt"
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"time"
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"github.com/golang-jwt/jwt/v5"
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)
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const (
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defaultAccessTTL = 7200 * time.Second
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refreshTTL = 30 * 24 * time.Hour
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)
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type JWTManager struct {
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secret []byte
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refreshSecret []byte
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accessTTL time.Duration
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refreshTTL time.Duration
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}
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func NewJWTManager(secret, refreshSecret string) *JWTManager {
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return &JWTManager{
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secret: []byte(secret),
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refreshSecret: []byte(refreshSecret),
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accessTTL: defaultAccessTTL,
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refreshTTL: refreshTTL,
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}
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}
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func (m *JWTManager) GenerateAccessToken(claims Claims) (string, error) {
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now := time.Now()
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claims.RegisteredClaims = jwt.RegisteredClaims{
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ExpiresAt: jwt.NewNumericDate(now.Add(m.accessTTL)),
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IssuedAt: jwt.NewNumericDate(now),
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Subject: claims.UserID,
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}
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token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
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return token.SignedString(m.secret)
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}
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func (m *JWTManager) GenerateRefreshToken(userID string) (string, error) {
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now := time.Now()
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claims := jwt.RegisteredClaims{
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ExpiresAt: jwt.NewNumericDate(now.Add(m.refreshTTL)),
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IssuedAt: jwt.NewNumericDate(now),
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Subject: userID,
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}
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token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
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return token.SignedString(m.refreshSecret)
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}
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func (m *JWTManager) ParseAccessToken(tokenStr string) (*Claims, error) {
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token, err := jwt.ParseWithClaims(tokenStr, &Claims{}, func(t *jwt.Token) (interface{}, error) {
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if _, ok := t.Method.(*jwt.SigningMethodHMAC); !ok {
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return nil, fmt.Errorf("unexpected signing method: %v", t.Header["alg"])
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}
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return m.secret, nil
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})
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if err != nil {
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return nil, fmt.Errorf("parse access token: %w", err)
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}
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claims, ok := token.Claims.(*Claims)
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if !ok || !token.Valid {
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return nil, fmt.Errorf("invalid access token")
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}
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return claims, nil
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}
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func (m *JWTManager) ParseRefreshToken(tokenStr string) (string, error) {
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token, err := jwt.ParseWithClaims(tokenStr, &jwt.RegisteredClaims{}, func(t *jwt.Token) (interface{}, error) {
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if _, ok := t.Method.(*jwt.SigningMethodHMAC); !ok {
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return nil, fmt.Errorf("unexpected signing method: %v", t.Header["alg"])
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}
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return m.refreshSecret, nil
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})
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if err != nil {
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return "", fmt.Errorf("parse refresh token: %w", err)
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}
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claims, ok := token.Claims.(*jwt.RegisteredClaims)
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if !ok || !token.Valid {
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return "", fmt.Errorf("invalid refresh token")
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}
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return claims.Subject, nil
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}
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