104 lines
2.6 KiB
Go
104 lines
2.6 KiB
Go
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package auth
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import (
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"crypto/sha256"
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"fmt"
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"time"
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"github.com/golang-jwt/jwt/v5"
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"github.com/google/uuid"
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)
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type Manager struct {
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secret []byte
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accessTTL time.Duration
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refreshTTL time.Duration
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}
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func NewManager(secret string, accessTTL, refreshTTL time.Duration) *Manager {
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return &Manager{
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secret: []byte(secret),
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accessTTL: accessTTL,
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refreshTTL: refreshTTL,
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}
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}
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type TokenPair struct {
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AccessToken string `json:"access_token"`
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RefreshToken string `json:"refresh_token"`
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AccessJTI string `json:"-"`
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RefreshJTI string `json:"-"`
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ExpiresAt int64 `json:"expires_at"`
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}
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func (m *Manager) Issue(userID, tenantID int64, role string) (*TokenPair, error) {
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now := time.Now()
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accessJTI := uuid.New().String()
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refreshJTI := uuid.New().String()
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accessClaims := Claims{
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UserID: userID,
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TenantID: tenantID,
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Role: role,
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RegisteredClaims: jwt.RegisteredClaims{
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ID: accessJTI,
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Subject: "access",
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IssuedAt: jwt.NewNumericDate(now),
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ExpiresAt: jwt.NewNumericDate(now.Add(m.accessTTL)),
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},
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}
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accessToken, err := jwt.NewWithClaims(jwt.SigningMethodHS256, accessClaims).SignedString(m.secret)
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if err != nil {
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return nil, fmt.Errorf("sign access token: %w", err)
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}
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refreshClaims := Claims{
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UserID: userID,
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TenantID: tenantID,
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Role: role,
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RegisteredClaims: jwt.RegisteredClaims{
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ID: refreshJTI,
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Subject: "refresh",
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IssuedAt: jwt.NewNumericDate(now),
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ExpiresAt: jwt.NewNumericDate(now.Add(m.refreshTTL)),
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},
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}
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refreshToken, err := jwt.NewWithClaims(jwt.SigningMethodHS256, refreshClaims).SignedString(m.secret)
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if err != nil {
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return nil, fmt.Errorf("sign refresh token: %w", err)
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}
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return &TokenPair{
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AccessToken: accessToken,
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RefreshToken: refreshToken,
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AccessJTI: accessJTI,
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RefreshJTI: refreshJTI,
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ExpiresAt: now.Add(m.accessTTL).Unix(),
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}, nil
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}
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func (m *Manager) Parse(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, 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 token claims")
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}
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return claims, nil
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}
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func (m *Manager) AccessTTL() time.Duration { return m.accessTTL }
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func (m *Manager) RefreshTTL() time.Duration { return m.refreshTTL }
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func HashToken(raw string) string {
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h := sha256.Sum256([]byte(raw))
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return fmt.Sprintf("%x", h)
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}
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