Fix serving of system actor

Fixes #183

core/signatures.py

@@ -84,7 +84,7 @@ class HttpSignature:
         headers = {}
         for header_name in header_names:
             if header_name == "(request-target)":
-                value = f"post {request.path}"
+                value = f"{request.method.lower()} {request.path}"
             elif header_name == "content-type":
                 value = request.META["CONTENT_TYPE"]
             else:

tests/users/models/test_system_actor.py

@@ -0,0 +1,33 @@
+import pytest
+from asgiref.sync import async_to_sync
+from django.test.client import RequestFactory
+from pytest_httpx import HTTPXMock
+
+from core.signatures import HttpSignature
+from users.models import SystemActor
+
+
+@pytest.mark.django_db
+def test_system_actor_signed(config_system, httpx_mock: HTTPXMock):
+    """
+    Tests that the system actor signs requests properly
+    """
+    system_actor = SystemActor()
+    system_actor.generate_keys()
+    # Send a fake outbound request
+    httpx_mock.add_response()
+    async_to_sync(system_actor.signed_request)(
+        method="get",
+        uri="http://example.com/test-actor",
+    )
+    # Retrieve it and construct a fake request object
+    outbound_request = httpx_mock.get_request()
+    fake_request = RequestFactory().get(
+        path="/test-actor",
+        HTTP_HOST="example.com",
+        HTTP_DATE=outbound_request.headers["date"],
+        HTTP_SIGNATURE=outbound_request.headers["signature"],
+        HTTP_ACCEPT=outbound_request.headers["accept"],
+    )
+    # Verify that
+    HttpSignature.verify_request(fake_request, system_actor.public_key)

users/models/identity.py

@@ -398,10 +398,10 @@ class Identity(StatorModel):
         """
         domain = handle.split("@")[1].lower()
         try:
-            response = await SystemActor().signed_request(
-                method="get",
-                uri=f"https://{domain}/.well-known/webfinger?resource=acct:{handle}",
-            )
+            async with httpx.AsyncClient() as client:
+                response = await client.get(
+                    f"https://{domain}/.well-known/webfinger?resource=acct:{handle}",
+                )
         except (httpx.RequestError, httpx.ConnectError):
             return None, None
         if response.status_code in [404, 410]:

users/models/system_actor.py

@@ -49,6 +49,7 @@ class SystemActor:
             "preferredUsername": self.username,
             "url": self.profile_uri,
             "manuallyApprovesFollowers": True,
+            "toot:discoverable": False,
             "publicKey": {
                 "id": self.public_key_id,
                 "owner": self.actor_uri,

users/views/activitypub.py

@@ -219,5 +219,6 @@ class SystemActorView(View):
             canonicalise(
                 SystemActor().to_ap(),
                 include_security=True,
-            )
+            ),
+            content_type="application/activity+json",
         )