Implement Delete activity for deleting users

routers/api/v1/activitypub/delete.go

@@ -0,0 +1,31 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package activitypub
+
+import (
+	"context"
+
+	user_service "code.gitea.io/gitea/services/user"
+	"code.gitea.io/gitea/services/activitypub"
+
+	ap "github.com/go-ap/activitypub"
+)
+
+// Process an incoming Delete activity
+func delete(ctx context.Context, delete ap.Delete) error {
+	actorIRI := delete.Actor.GetLink()
+	objectIRI := delete.Object.GetLink()
+	// Make sure actor matches the object getting deleted
+	if actorIRI != objectIRI {
+		return nil
+	}
+	
+	// Object is the user getting deleted
+	objectUser, err := activitypub.PersonIRIToUser(ctx, objectIRI)
+	if err != nil {
+		return err
+	}
+	user_service.DeleteUser(ctx, objectUser, true)
+	return nil
+}

routers/api/v1/activitypub/person.go

@@ -138,6 +138,9 @@ func PersonInbox(ctx *context.APIContext) {
 			n.Context = ap.IRI(strings.TrimSuffix(noteIRI, "/"+noteIRISplit[len(noteIRISplit)-1]))
 			return createComment(ctx, n)
 		})
+	case ap.DeleteType:
+		// Deleting a user
+		delete(ctx, activity)
 	default:
 		err = fmt.Errorf("unsupported ActivityStreams activity type: %s", activity.GetType())
 	}