[WIP] Start a new ActivityPub module

little_boxes/remote_object.py

@@ -0,0 +1,39 @@
+import logging
+from typing import Any
+
+import requests
+from urllib.parse import urlparse
+from Crypto.PublicKey import RSA
+
+from .urlutils import check_url
+from .errors import ActivityNotFoundError
+from .errors import UnexpectedActivityTypeError
+
+logger = logging.getLogger(__name__)
+
+
+class DefaultRemoteObjectFetcher(object):
+    """Not meant to be used on production, a caching layer, and DB shortcut fox inbox/outbox should be hooked."""
+
+    def __init__(self):
+        self._user_agent = 'Little Boxes (+https://github.com/tsileo/little_boxes)'
+
+    def fetch(self, iri):
+        check_url(iri)
+
+        resp = requests.get(actor_url, headers={
+            'Accept': 'application/activity+json',
+            'User-Agent': self._user_agent,    
+        })
+
+        if resp.status_code == 404:
+            raise ActivityNotFoundError(f'{actor_url} cannot be fetched, 404 not found error')
+
+        resp.raise_for_status()
+        
+        return resp.json()
+
+OBJECT_FETCHER = DefaultRemoteObjectFetcher()
+
+def set_object_fetcher(object_fetcher: Any):
+    OBJECT_FETCHER = object_fetcher