68 lines
1.6 KiB
Go
68 lines
1.6 KiB
Go
package auth
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import (
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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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const (
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AccessTokenDuration = 15 * time.Minute
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RefreshTokenDuration = 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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}
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type Claims struct {
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UserID uuid.UUID `json:"user_id"`
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jwt.RegisteredClaims
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}
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func NewJWTManager(secret string) *JWTManager {
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return &JWTManager{secret: []byte(secret)}
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}
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func (m *JWTManager) GenerateAccessToken(userID uuid.UUID) (string, error) {
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claims := Claims{
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UserID: userID,
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RegisteredClaims: jwt.RegisteredClaims{
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ExpiresAt: jwt.NewNumericDate(time.Now().Add(AccessTokenDuration)),
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IssuedAt: jwt.NewNumericDate(time.Now()),
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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(m.secret)
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}
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func (m *JWTManager) GenerateRefreshToken(userID uuid.UUID) (string, error) {
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claims := Claims{
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UserID: userID,
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RegisteredClaims: jwt.RegisteredClaims{
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ExpiresAt: jwt.NewNumericDate(time.Now().Add(RefreshTokenDuration)),
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IssuedAt: jwt.NewNumericDate(time.Now()),
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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(m.secret)
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}
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func (m *JWTManager) ValidateToken(tokenString string) (*Claims, error) {
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token, err := jwt.ParseWithClaims(tokenString, &Claims{}, func(token *jwt.Token) (interface{}, error) {
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if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
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return nil, jwt.ErrSignatureInvalid
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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, jwt.ErrSignatureInvalid
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}
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return claims, nil
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}
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