Ignore 4xx references in AP (#4463)

* Ignore 4xx references

* remove unnecessary comment

4 files changed, 37 insertions, 20 deletions

diff --git a/src/remote/activitypub/kernel/announce/note.ts b/src/remote/activitypub/kernel/announce/note.ts
index 128ca6da81..8d090902c0 100644
--- a/src/remote/activitypub/kernel/announce/note.ts
+++ b/src/remote/activitypub/kernel/announce/note.ts
@@ -29,7 +29,19 @@ export default async function(resolver: Resolver, actor: IRemoteUser, activity:
 		return;
 	}
 
-	const renote = await resolveNote(note);
+	// Announce対象をresolve
+	let renote;
+	try {
+		renote = await resolveNote(note);
+	} catch (e) {
+		// 対象が4xxならスキップ
+		if (e.statusCode >= 400 && e.statusCode < 500) {
+			logger.warn(`Ignored announce target ${note.inReplyTo} - ${e.statusCode}`);
+			return;
+		}
+		logger.warn(`Error in announce target ${note.inReplyTo} - ${e.statusCode || e}`);
+		throw e;
+	}
 
 	logger.info(`Creating the (Re)Note: ${uri}`);
 
diff --git a/src/remote/activitypub/models/image.ts b/src/remote/activitypub/models/image.ts
index ef0b24e890..bd97d13d27 100644
--- a/src/remote/activitypub/models/image.ts
+++ b/src/remote/activitypub/models/image.ts
@@ -27,7 +27,17 @@ export async function createImage(actor: IRemoteUser, value: any): Promise<IDriv
 	const instance = await fetchMeta();
 	const cache = instance.cacheRemoteFiles;
 
-	let file = await uploadFromUrl(image.url, actor, null, image.url, image.sensitive, false, !cache);
+	let file;
+	try {
+		file = await uploadFromUrl(image.url, actor, null, image.url, image.sensitive, false, !cache);
+	} catch (e) {
+		// 4xxの場合は添付されてなかったことにする
+		if (e >= 400 && e < 500) {
+			logger.warn(`Ignored image: ${image.url} - ${e}`);
+			return null;
+		}
+		throw e;
+	}
 
 	if (file.metadata.isRemote) {
 		// URLが異なっている場合、同じ画像が以前に異なるURLで登録されていたということなので、
diff --git a/src/remote/activitypub/models/note.ts b/src/remote/activitypub/models/note.ts
index a87257dffc..7078eb2ce1 100644
--- a/src/remote/activitypub/models/note.ts
+++ b/src/remote/activitypub/models/note.ts
@@ -111,11 +111,22 @@ export async function createNote(value: any, resolver?: Resolver, silent = false
 	note.attachment = Array.isArray(note.attachment) ? note.attachment : note.attachment ? [note.attachment] : [];
 	const files = note.attachment
 		.map(attach => attach.sensitive = note.sensitive)
-		? await Promise.all(note.attachment.map(x => limit(() => resolveImage(actor, x)) as Promise<IDriveFile>))
+		? (await Promise.all(note.attachment.map(x => limit(() => resolveImage(actor, x)) as Promise<IDriveFile>)))
+			.filter(image => image != null)
 		: [];
 
 	// リプライ
-	const reply = note.inReplyTo ? await resolveNote(note.inReplyTo, resolver) : null;
+	const reply = note.inReplyTo
+		? await resolveNote(note.inReplyTo, resolver).catch(e => {
+			// 4xxの場合はリプライしてないことにする
+			if (e.statusCode >= 400 && e.statusCode < 500) {
+				logger.warn(`Ignored inReplyTo ${note.inReplyTo} - ${e.statusCode} `);
+				return null;
+			}
+			logger.warn(`Error in inReplyTo ${note.inReplyTo} - ${e.statusCode || e}`);
+			throw e;
+		})
+		: null;
 
 	// 引用
 	let quote: INote;
diff --git a/src/remote/activitypub/resolver.ts b/src/remote/activitypub/resolver.ts
index 6291d133e9..05152993e4 100644
--- a/src/remote/activitypub/resolver.ts
+++ b/src/remote/activitypub/resolver.ts
@@ -1,9 +1,6 @@
 import * as request from 'request-promise-native';
 import { IObject } from './type';
 import config from '../../config';
-import { apLogger } from './logger';
-
-export const logger = apLogger.createSubLogger('resolver');
 
 export default class Resolver {
 	private history: Set<string>;
@@ -34,7 +31,6 @@ export default class Resolver {
 			}
 
 			default: {
-				logger.error(`unknown collection type: ${collection.type}`);
 				throw new Error(`unknown collection type: ${collection.type}`);
 			}
 		}
@@ -44,7 +40,6 @@ export default class Resolver {
 
 	public async resolve(value: any): Promise<IObject> {
 		if (value == null) {
-			logger.error('resolvee is null (or undefined)');
 			throw new Error('resolvee is null (or undefined)');
 		}
 
@@ -53,7 +48,6 @@ export default class Resolver {
 		}
 
 		if (this.history.has(value)) {
-			logger.error(`cannot resolve already resolved one: ${value}`);
 			throw new Error('cannot resolve already resolved one');
 		}
 
@@ -68,12 +62,6 @@ export default class Resolver {
 				Accept: 'application/activity+json, application/ld+json'
 			},
 			json: true
-		}).catch(e => {
-			logger.error(`request error: ${value}: ${e.message}`, {
-				url: value,
-				e: e
-			});
-			throw new Error(`request error: ${e.message}`);
 		});
 
 		if (object === null || (
@@ -81,10 +69,6 @@ export default class Resolver {
 				!object['@context'].includes('https://www.w3.org/ns/activitystreams') :
 				object['@context'] !== 'https://www.w3.org/ns/activitystreams'
 		)) {
-			logger.error(`invalid response: ${value}`, {
-				url: value,
-				object: object
-			});
 			throw new Error('invalid response');
 		}