feat: Securisation du Backend

Back-End/N3wtSchool/middleware.py

@@ -7,5 +7,22 @@ class ContentSecurityPolicyMiddleware:
 
     def __call__(self, request):
         response = self.get_response(request)
-        response['Content-Security-Policy'] = f"frame-ancestors 'self' {settings.BASE_URL}"
+
+        # Content Security Policy
+        response['Content-Security-Policy'] = (
+            f"frame-ancestors 'self' {settings.BASE_URL}; "
+            "default-src 'self'; "
+            "script-src 'self'; "
+            "style-src 'self' 'unsafe-inline'; "
+            "img-src 'self' data: blob:; "
+            "font-src 'self'; "
+            "connect-src 'self'; "
+            "object-src 'none'; "
+            "base-uri 'self';"
+        )
+        # En-têtes de sécurité complémentaires
+        response['X-Content-Type-Options'] = 'nosniff'
+        response['Referrer-Policy'] = 'strict-origin-when-cross-origin'
+        response['Permissions-Policy'] = 'geolocation=(), microphone=(), camera=()'
+
         return response

Back-End/N3wtSchool/settings.py

@@ -33,9 +33,9 @@ LOGIN_REDIRECT_URL = '/Subscriptions/registerForms'
 # See https://docs.djangoproject.com/en/5.0/howto/deployment/checklist/
 
 # SECURITY WARNING: don't run with debug turned on in production!
-DEBUG = os.getenv('DJANGO_DEBUG', True)
+DEBUG = os.getenv('DJANGO_DEBUG', 'False').lower() in ('true', '1')
 
-ALLOWED_HOSTS = ['*']
+ALLOWED_HOSTS = os.getenv('ALLOWED_HOSTS', 'localhost,127.0.0.1').split(',')
 
 # Application definition
 
@@ -62,6 +62,7 @@ INSTALLED_APPS = [
     'N3wtSchool',
     'drf_yasg',
     'rest_framework_simplejwt',
+    'rest_framework_simplejwt.token_blacklist',
     'channels',
 ]
 
@@ -124,9 +125,15 @@ LOGGING = {
             "class": "logging.StreamHandler",
             "formatter": "verbose",  # Utilisation du formateur
         },
+        "file": {
+            "level": "WARNING",
+            "class": "logging.FileHandler",
+            "filename": os.path.join(BASE_DIR, "django.log"),
+            "formatter": "verbose",
+        },
     },
     "root": {
-        "handlers": ["console"],
+        "handlers": ["console", "file"],
         "level": os.getenv("ROOT_LOG_LEVEL", "INFO"),
     },
     "loggers": {
@@ -171,9 +178,31 @@ LOGGING = {
             "level": os.getenv("GESTION_ENSEIGNANTS_LOG_LEVEL", "INFO"),
             "propagate": False,
         },
+        # Logs JWT : montre exactement pourquoi un token est rejeté (expiré,
+        # signature invalide, claim manquant, etc.)
+        "rest_framework_simplejwt": {
+            "handlers": ["console"],
+            "level": os.getenv("JWT_LOG_LEVEL", "DEBUG"),
+            "propagate": False,
+        },
+        "rest_framework": {
+            "handlers": ["console"],
+            "level": os.getenv("DRF_LOG_LEVEL", "WARNING"),
+            "propagate": False,
+        },
     },
 }
 
+# Hashage des mots de passe - configuration explicite pour garantir un stockage sécurisé
+# Les mots de passe ne sont JAMAIS stockés en clair
+PASSWORD_HASHERS = [
+    'django.contrib.auth.hashers.PBKDF2PasswordHasher',
+    'django.contrib.auth.hashers.PBKDF2SHA1PasswordHasher',
+    'django.contrib.auth.hashers.Argon2PasswordHasher',
+    'django.contrib.auth.hashers.BCryptSHA256PasswordHasher',
+    'django.contrib.auth.hashers.ScryptPasswordHasher',
+]
+
 # Password validation
 # https://docs.djangoproject.com/en/5.0/ref/settings/#auth-password-validators
 
@@ -184,12 +213,12 @@ AUTH_PASSWORD_VALIDATORS = [
     {
         'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
         'OPTIONS': {
-            'min_length': 6,
+            'min_length': 10,
         }
     },
-    #{
-    #    'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
-    #},
+    {
+        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
+    },
     {
         'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
     },
@@ -276,6 +305,16 @@ CSRF_COOKIE_SECURE = os.getenv('CSRF_COOKIE_SECURE', 'false').lower() == 'true'
 CSRF_COOKIE_NAME = 'csrftoken'
 CSRF_COOKIE_DOMAIN = os.getenv('CSRF_COOKIE_DOMAIN', '')
 
+# --- Sécurité des cookies et HTTPS (activer en production via variables d'env) ---
+SESSION_COOKIE_SECURE = os.getenv('SESSION_COOKIE_SECURE', 'false').lower() == 'true'
+SESSION_COOKIE_HTTPONLY = True
+SESSION_COOKIE_SAMESITE = 'Lax'
+SECURE_CONTENT_TYPE_NOSNIFF = True
+SECURE_HSTS_SECONDS = int(os.getenv('SECURE_HSTS_SECONDS', '0'))
+SECURE_HSTS_INCLUDE_SUBDOMAINS = os.getenv('SECURE_HSTS_INCLUDE_SUBDOMAINS', 'false').lower() == 'true'
+SECURE_HSTS_PRELOAD = os.getenv('SECURE_HSTS_PRELOAD', 'false').lower() == 'true'
+SECURE_SSL_REDIRECT = os.getenv('SECURE_SSL_REDIRECT', 'false').lower() == 'true'
+
 USE_TZ = True
 TZ_APPLI = 'Europe/Paris'
 
@@ -312,10 +351,22 @@ NB_MAX_PAGE = 100
 REST_FRAMEWORK = {
     'DEFAULT_PAGINATION_CLASS': 'Subscriptions.pagination.CustomSubscriptionPagination',
     'PAGE_SIZE': NB_RESULT_SUBSCRIPTIONS_PER_PAGE,
+    'DEFAULT_PERMISSION_CLASSES': [
+        'rest_framework.permissions.IsAuthenticated',
+    ],
     'DEFAULT_AUTHENTICATION_CLASSES': (
-        'rest_framework_simplejwt.authentication.JWTAuthentication',
+        'Auth.backends.LoggingJWTAuthentication',
         'rest_framework.authentication.SessionAuthentication',
     ),
+    'DEFAULT_THROTTLE_CLASSES': [
+        'rest_framework.throttling.AnonRateThrottle',
+        'rest_framework.throttling.UserRateThrottle',
+    ],
+    'DEFAULT_THROTTLE_RATES': {
+        'anon': '100/min',
+        'user': '1000/min',
+        'login': '10/min',
+    },
 }
 
 CELERY_BROKER_URL = 'redis://redis:6379/0'
@@ -333,11 +384,28 @@ REDIS_PORT = 6379
 REDIS_DB = 0
 REDIS_PASSWORD = None
 
-SECRET_KEY = os.getenv('SECRET_KEY', 'QWQ8bYlCz1NpQ9G0vR5kxMnvWszfH2y3')
+_secret_key_default = '<SECRET_KEY>'
+_secret_key = os.getenv('SECRET_KEY', _secret_key_default)
+if _secret_key == _secret_key_default and not DEBUG:
+    raise ValueError(
+        "La variable d'environnement SECRET_KEY doit être définie en production. "
+        "Utilisez une clé aléatoire forte (ex: python -c 'import secrets; print(secrets.token_hex(50))')."
+    )
+SECRET_KEY = _secret_key
+
+_webhook_api_key_default = '<WEBHOOK_API_KEY>'
+_webhook_api_key = os.getenv('WEBHOOK_API_KEY', _webhook_api_key_default)
+if _webhook_api_key == _webhook_api_key_default and not DEBUG:
+    raise ValueError(
+        "La variable d'environnement WEBHOOK_API_KEY doit être définie en production. "
+        "Utilisez une clé aléatoire forte (ex: python -c 'import secrets; print(secrets.token_hex(50))')."
+    )
+WEBHOOK_API_KEY = _webhook_api_key
+
 SIMPLE_JWT = {
     'ACCESS_TOKEN_LIFETIME': timedelta(minutes=15),
     'REFRESH_TOKEN_LIFETIME': timedelta(days=1),
-    'ROTATE_REFRESH_TOKENS': False,
+    'ROTATE_REFRESH_TOKENS': True,
     'BLACKLIST_AFTER_ROTATION': True,
     'ALGORITHM': 'HS256',
     'SIGNING_KEY': SECRET_KEY,
@@ -346,7 +414,7 @@ SIMPLE_JWT = {
     'USER_ID_FIELD': 'id',
     'USER_ID_CLAIM': 'user_id',
     'AUTH_TOKEN_CLASSES': ('rest_framework_simplejwt.tokens.AccessToken',),
-    'TOKEN_TYPE_CLAIM': 'token_type',
+    'TOKEN_TYPE_CLAIM': 'type',
 }
 
 # Django Channels Configuration