fix: no decoding in archiver, catch exception when requesting hashes on broken capture

bin/archiver.py

@@ -25,7 +25,7 @@ class Archiver(AbstractManager):
     def __init__(self, loglevel: int=logging.INFO):
         super().__init__(loglevel)
         self.script_name = 'archiver'
-        self.redis = Redis(unix_socket_path=get_socket_path('cache'), decode_responses=True)
+        self.redis = Redis(unix_socket_path=get_socket_path('cache'))
 
         # make sure archived captures dir exists
         self.archived_captures_dir = get_homedir() / 'archived_captures'

website/web/__init__.py

@@ -225,9 +225,13 @@ def after_request(response):
 
 @app.route('/tree/<string:tree_uuid>/host/<string:node_uuid>/hashes', methods=['GET'])
 def hashes_hostnode(tree_uuid: str, node_uuid: str):
+    try:
         hashes = lookyloo.get_hashes(tree_uuid, hostnode_uuid=node_uuid)
         return send_file(BytesIO('\n'.join(hashes).encode()),
                          mimetype='test/plain', as_attachment=True, download_name=f'hashes.{node_uuid}.txt')
+    except NoValidHarFile:
+        return send_file(BytesIO(b'The capture is broken and does not contain any HAR files.'),
+                         mimetype='test/plain', as_attachment=True, download_name=f'hashes.{node_uuid}.txt')
 
 
 @app.route('/tree/<string:tree_uuid>/host/<string:node_uuid>/text', methods=['GET'])