78 lines
1.7 KiB
Go
78 lines
1.7 KiB
Go
package auth
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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("token invalide")
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ErrExpiredToken = errors.New("token expiré")
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)
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// Claims représente les données du token JWT
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type Claims struct {
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UserID string `json:"user_id"`
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Role string `json:"role"`
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jwt.RegisteredClaims
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}
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// JWTManager gère la génération et validation des tokens
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type JWTManager struct {
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secretKey string
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}
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// NewJWTManager crée un nouveau gestionnaire JWT
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func NewJWTManager(secretKey string) *JWTManager {
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return &JWTManager{
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secretKey: secretKey,
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}
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}
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// GenerateToken génère un token JWT
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func (m *JWTManager) GenerateToken(userID, role string, expiresIn time.Duration) (string, error) {
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claims := Claims{
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UserID: userID,
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Role: role,
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RegisteredClaims: jwt.RegisteredClaims{
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ExpiresAt: jwt.NewNumericDate(time.Now().Add(expiresIn)),
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IssuedAt: jwt.NewNumericDate(time.Now()),
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Issuer: "pkiapi",
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},
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}
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token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
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tokenString, err := token.SignedString([]byte(m.secretKey))
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if err != nil {
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return "", err
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}
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return tokenString, nil
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}
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// ValidateToken valide et parse un token JWT
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func (m *JWTManager) ValidateToken(tokenString string) (*Claims, error) {
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claims := &Claims{}
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token, err := jwt.ParseWithClaims(tokenString, claims, func(token *jwt.Token) (interface{}, error) {
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return []byte(m.secretKey), nil
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})
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if err != nil {
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return nil, ErrInvalidToken
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}
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if !token.Valid {
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return nil, ErrInvalidToken
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}
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// Vérifier l'expiration
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if claims.ExpiresAt != nil && claims.ExpiresAt.Before(time.Now()) {
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return nil, ErrExpiredToken
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}
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return claims, nil
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}
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