From 3efffbcf22f9292bfe4644df4b7627687a6748f5 Mon Sep 17 00:00:00 2001
From: mei23 <m@m544.net>
Date: Sat, 1 Sep 2018 17:53:38 +0900
Subject: [PATCH] Receive Update activity

---
 src/queue/processors/http/process-inbox.ts | 28 +++++++++++++++-------
 src/remote/activitypub/models/person.ts    |  8 ++++---
 2 files changed, 24 insertions(+), 12 deletions(-)

diff --git a/src/queue/processors/http/process-inbox.ts b/src/queue/processors/http/process-inbox.ts
index 7e564dd32..8e6b3769d 100644
--- a/src/queue/processors/http/process-inbox.ts
+++ b/src/queue/processors/http/process-inbox.ts
@@ -5,7 +5,7 @@ const httpSignature = require('http-signature');
 import parseAcct from '../../../misc/acct/parse';
 import User, { IRemoteUser } from '../../../models/user';
 import perform from '../../../remote/activitypub/perform';
-import { resolvePerson } from '../../../remote/activitypub/models/person';
+import { resolvePerson, updatePerson } from '../../../remote/activitypub/models/person';
 import { toUnicode } from 'punycode';
 import { URL } from 'url';
 
@@ -44,11 +44,6 @@ export default async (job: bq.Job, done: any): Promise<void> => {
 		}
 
 		user = await User.findOne({ usernameLower: username, host: host.toLowerCase() }) as IRemoteUser;
-
-		// アクティビティを送信してきたユーザーがまだMisskeyサーバーに登録されていなかったら登録する
-		if (user === null) {
-			user = await resolvePerson(activity.actor) as IRemoteUser;
-		}
 	} else {
 		// アクティビティ内のホストの検証
 		const host = toUnicode(new URL(signature.keyId).hostname.toLowerCase());
@@ -64,11 +59,26 @@ export default async (job: bq.Job, done: any): Promise<void> => {
 			host: { $ne: null },
 			'publicKey.id': signature.keyId
 		}) as IRemoteUser;
+	}
 
-		// アクティビティを送信してきたユーザーがまだMisskeyサーバーに登録されていなかったら登録する
-		if (user === null) {
-			user = await resolvePerson(activity.actor) as IRemoteUser;
+	// Update activityの場合は、ここで署名検証/更新処理まで実施して終了
+	if (activity.type === 'Update') {
+		if (activity.object && activity.object.type === 'Person') {
+			if (user == null) {
+				console.warn('Update activity received, but user not registed.');
+			} else if (!httpSignature.verifySignature(signature, user.publicKey.publicKeyPem)) {
+				console.warn('Update activity received, but signature verification failed.');
+			} else {
+				updatePerson(activity.actor, null, activity.object);
+			}
 		}
+		done();
+		return;
+	}
+
+	// アクティビティを送信してきたユーザーがまだMisskeyサーバーに登録されていなかったら登録する
+	if (user === null) {
+		user = await resolvePerson(activity.actor) as IRemoteUser;
 	}
 
 	if (user === null) {
diff --git a/src/remote/activitypub/models/person.ts b/src/remote/activitypub/models/person.ts
index 9c770141a..dff38f546 100644
--- a/src/remote/activitypub/models/person.ts
+++ b/src/remote/activitypub/models/person.ts
@@ -216,10 +216,12 @@ export async function createPerson(uri: string, resolver?: Resolver): Promise<IU
 
 /**
  * Personの情報を更新します。
- *
  * Misskeyに対象のPersonが登録されていなければ無視します。
+ * @param uri URI of Person
+ * @param resolver Resolver
+ * @param hint Hint of Person object (この値が正当なPersonの場合、Remote resolveをせずに更新に利用します)
  */
-export async function updatePerson(uri: string, resolver?: Resolver): Promise<void> {
+export async function updatePerson(uri: string, resolver?: Resolver, hint?: object): Promise<void> {
 	if (typeof uri !== 'string') throw 'uri is not string';
 
 	// URIがこのサーバーを指しているならスキップ
@@ -237,7 +239,7 @@ export async function updatePerson(uri: string, resolver?: Resolver): Promise<vo
 
 	if (resolver == null) resolver = new Resolver();
 
-	const object = await resolver.resolve(uri) as any;
+	const object = hint || await resolver.resolve(uri) as any;
 
 	const err = validatePerson(object, uri);