Code dedupe Webfinger and fix SystemActor inbox URL

takahe/settings/development.py

@@ -1,4 +1,5 @@
 import os
+import sys
 
 from .base import *  # noqa
 
@@ -18,7 +19,10 @@ SECURE_PROXY_SSL_HEADER = ("HTTP_X_FORWARDED_PROTO", "https")
 EMAIL_BACKEND = "django.core.mail.backends.console.EmailBackend"
 SERVER_EMAIL = "test@example.com"
 
-MAIN_DOMAIN = os.environ.get("TAKAHE_MAIN_DOMAIN", "https://example.com")
+MAIN_DOMAIN = os.environ.get("TAKAHE_MAIN_DOMAIN", "example.com")
+if "/" in MAIN_DOMAIN:
+    print("TAKAHE_MAIN_DOMAIN should be just the domain name - no https:// or path")
+    sys.exit(1)
 
 MEDIA_URL = os.environ.get("TAKAHE_MEDIA_URL", "/media/")
 MEDIA_ROOT = os.environ.get("TAKAHE_MEDIA_ROOT", BASE_DIR / "media")

tests/conftest.py

@@ -74,7 +74,7 @@ def identity(user):
     """
     domain = Domain.objects.create(domain="example.com", local=True, public=True)
     identity = Identity.objects.create(
-        actor_uri="https://example.com/test-actor/",
+        actor_uri="https://example.com/@test@example.com/",
         username="test",
         domain=domain,
         name="Test User",

tests/users/views/test_activitypub.py

@@ -1,26 +1,11 @@
 import pytest
 
-from users.models import Domain, Identity, User
-
 
 @pytest.mark.django_db
-def test_webfinger_actor(client):
+def test_webfinger_actor(client, identity):
     """
     Ensures the webfinger and actor URLs are working properly
     """
-    # Make a user
-    user = User.objects.create(email="test@example.com")
-    # Make a domain
-    domain = Domain.objects.create(domain="example.com", local=True)
-    domain.users.add(user)
-    # Make an identity for them
-    identity = Identity.objects.create(
-        actor_uri="https://example.com/@test@example.com/",
-        username="test",
-        domain=domain,
-        name="Test User",
-        local=True,
-    )
     identity.generate_keypair()
     # Fetch their webfinger
     data = client.get("/.well-known/webfinger?resource=acct:test@example.com").json()
@@ -29,3 +14,20 @@ def test_webfinger_actor(client):
     # Fetch their actor
     data = client.get("/@test@example.com/", HTTP_ACCEPT="application/ld+json").json()
     assert data["id"] == "https://example.com/@test@example.com/"
+
+
+@pytest.mark.django_db
+def test_webfinger_system_actor(client):
+    """
+    Ensures the webfinger and actor URLs are working properly for system actor
+    """
+    # Fetch their webfinger
+    data = client.get(
+        "/.well-known/webfinger?resource=acct:__system__@example.com"
+    ).json()
+    assert data["subject"] == "acct:__system__@example.com"
+    assert data["aliases"][0] == "https://example.com/about/"
+    # Fetch their actor
+    data = client.get("/actor/", HTTP_ACCEPT="application/ld+json").json()
+    assert data["id"] == "https://example.com/actor/"
+    assert data["inbox"] == "https://example.com/actor/inbox/"

users/models/system_actor.py

@@ -22,6 +22,9 @@ class SystemActor:
         self.profile_uri = f"https://{settings.MAIN_DOMAIN}/about/"
         self.username = "__system__"
 
+    def absolute_profile_uri(self):
+        return self.profile_uri
+
     def generate_keys(self):
         self.private_key, self.public_key = RsaKeys.generate_keypair()
         Config.set_system("system_actor_private_key", self.private_key)
@@ -39,7 +42,7 @@ class SystemActor:
         return {
             "id": self.actor_uri,
             "type": "Application",
-            "inbox": self.actor_uri + "/inbox/",
+            "inbox": self.actor_uri + "inbox/",
             "preferredUsername": self.username,
             "url": self.profile_uri,
             "as:manuallyApprovesFollowers": True,

users/views/activitypub.py

@@ -99,51 +99,34 @@ class Webfinger(View):
         if not resource.startswith("acct:"):
             return HttpResponseBadRequest("Not an account resource")
         handle = resource[5:]
+
         if handle.startswith("__system__@"):
             # They are trying to webfinger the system actor
-            system_actor = SystemActor()
-            return JsonResponse(
-                {
-                    "subject": f"acct:{handle}",
-                    "aliases": [
-                        system_actor.profile_uri,
-                    ],
-                    "links": [
-                        {
-                            "rel": "http://webfinger.net/rel/profile-page",
-                            "type": "text/html",
-                            "href": system_actor.profile_uri,
-                        },
-                        {
-                            "rel": "self",
-                            "type": "application/activity+json",
-                            "href": system_actor.actor_uri,
-                        },
-                    ],
-                }
-            )
+            actor = SystemActor()
         else:
-            identity = by_handle_or_404(request, handle)
-            return JsonResponse(
-                {
-                    "subject": f"acct:{identity.handle}",
-                    "aliases": [
-                        identity.absolute_profile_uri(),
-                    ],
-                    "links": [
-                        {
-                            "rel": "http://webfinger.net/rel/profile-page",
-                            "type": "text/html",
-                            "href": identity.absolute_profile_uri(),
-                        },
-                        {
-                            "rel": "self",
-                            "type": "application/activity+json",
-                            "href": identity.actor_uri,
-                        },
-                    ],
-                }
-            )
+            actor = by_handle_or_404(request, handle)
+            handle = actor.handle
+
+        return JsonResponse(
+            {
+                "subject": f"acct:{handle}",
+                "aliases": [
+                    actor.absolute_profile_uri(),
+                ],
+                "links": [
+                    {
+                        "rel": "http://webfinger.net/rel/profile-page",
+                        "type": "text/html",
+                        "href": actor.absolute_profile_uri(),
+                    },
+                    {
+                        "rel": "self",
+                        "type": "application/activity+json",
+                        "href": actor.actor_uri,
+                    },
+                ],
+            }
+        )
 
 
 @method_decorator(csrf_exempt, name="dispatch")