add cache script

files/cache.py

@@ -0,0 +1,30 @@
+from mitmproxy import http
+from mitmproxy import ctx
+
+import os
+import hashlib
+
+class FrameProxy:
+    path = "/opt/cache"
+
+    def response(self, flow: http.HTTPFlow) -> None:
+        path = os.path.join(self.path, self.url_to_file(flow.request.path)
+        if not os.path.isfile(path):
+            if not os.path.exists(os.path.dirname(path)):
+                os.makedirs(os.path.dirname(path))
+            with open(path, "w") as cache_file:
+                file.write(flow.response.text)
+
+    def request(self, flow: http.HTTPFlow) -> None:
+        path = os.path.join(self.path, self.url_to_file(flow.request.path)
+        if os.path.isfile(path):
+            with open(path, 'r') as cache_file:
+                cache_content = cache_file.read()
+            flow.response = http.HTTPResponse.make(200, cache_content)
+
+    def url_to_file(self, path)
+        url = path.split('?')[0]
+        filename = hashlib.sha512(url).encode('utf-8').hexdigest()
+        return filename
+
+addons = [FrameProxy()]