CORS fixes: (#6310)

* CORS fixes:

- Update CORS headers in settings.py

* Remove dead code

InvenTree/InvenTree/middleware.py

@@ -25,6 +25,41 @@ class AuthRequiredMiddleware(object):
         """Save response object."""
         self.get_response = get_response
 
+    def get_auth_headers(self, request):
+        """Extract authorization headers from request."""
+        keys = ['Authorization', 'authorization']
+
+        for k in keys:
+            if k in request.headers.keys():
+                return request.headers[k]
+
+        return None
+
+    def check_token(self, request) -> bool:
+        """Check if the user is authenticated via token."""
+        auth = self.get_auth_headers(request)
+
+        if not auth:
+            return False
+
+        auth = auth.strip().lower().split()
+
+        if len(auth) > 1 and auth[0].startswith('token'):
+            token = auth[1]
+
+            # Does the provided token match a valid user?
+            try:
+                token = ApiToken.objects.get(key=token)
+
+                if token.active and token.user:
+                    # Provide the user information to the request
+                    request.user = token.user
+                    return True
+            except ApiToken.DoesNotExist:
+                logger.warning('Access denied for unknown token %s', token)
+
+        return False
+
     def __call__(self, request):
         """Check if user needs to be authenticated and is.
 
@@ -70,29 +105,9 @@ class AuthRequiredMiddleware(object):
             ):
                 authorized = True
 
-            elif (
-                'Authorization' in request.headers.keys()
-                or 'authorization' in request.headers.keys()
-            ):
-                auth = request.headers.get(
-                    'Authorization', request.headers.get('authorization')
-                ).strip()
-
-                if auth.lower().startswith('token') and len(auth.split()) == 2:
-                    token_key = auth.split()[1]
-
-                    # Does the provided token match a valid user?
-                    try:
-                        token = ApiToken.objects.get(key=token_key)
-
-                        if token.active and token.user:
-                            # Provide the user information to the request
-                            request.user = token.user
+            elif self.check_token(request):
                 authorized = True
 
-                    except ApiToken.DoesNotExist:
-                        logger.warning('Access denied for unknown token %s', token_key)
-
             # No authorization was found for the request
             if not authorized:
                 path = request.path_info

InvenTree/InvenTree/settings.py

@@ -131,15 +131,17 @@ ALLOWED_HOSTS = get_setting(
 
 # Cross Origin Resource Sharing (CORS) options
 
+# Extract CORS options from configuration file
+CORS_ALLOW_ALL_ORIGINS = get_boolean_setting(
+    'INVENTREE_CORS_ORIGIN_ALLOW_ALL', config_key='cors.allow_all', default_value=DEBUG
+)
+
+CORS_ALLOW_CREDENTIALS = True
+
 # Only allow CORS access to API and media endpoints
 CORS_URLS_REGEX = r'^/(api|media|static)/.*$'
 
-# Extract CORS options from configuration file
-CORS_ORIGIN_ALLOW_ALL = get_boolean_setting(
-    'INVENTREE_CORS_ORIGIN_ALLOW_ALL', config_key='cors.allow_all', default_value=False
-)
-
-CORS_ORIGIN_WHITELIST = get_setting(
+CORS_ALLOWED_ORIGINS = get_setting(
     'INVENTREE_CORS_ORIGIN_WHITELIST',
     config_key='cors.whitelist',
     default_value=[],
@@ -263,9 +265,9 @@ MIDDLEWARE = CONFIG.get(
         'x_forwarded_for.middleware.XForwardedForMiddleware',
         'user_sessions.middleware.SessionMiddleware',  # db user sessions
         'django.middleware.locale.LocaleMiddleware',
-        'django.middleware.common.CommonMiddleware',
         'django.middleware.csrf.CsrfViewMiddleware',
         'corsheaders.middleware.CorsMiddleware',
+        'django.middleware.common.CommonMiddleware',
         'django.contrib.auth.middleware.AuthenticationMiddleware',
         'InvenTree.middleware.InvenTreeRemoteUserMiddleware',  # Remote / proxy auth
         'django_otp.middleware.OTPMiddleware',  # MFA support