URLプレビューのサムネイルを隠す機能を追加 (MisskeyIO#214)

packages/backend/migration/1699284486293-urlPreviewDenyList.js

@@ -0,0 +1,16 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and other misskey contributors
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+export class UrlPreviewDenyList1699284486293 {
+    name = 'UrlPreviewDenyList1699284486293'
+
+    async up(queryRunner) {
+        await queryRunner.query(`ALTER TABLE "meta" ADD "urlPreviewDenyList" character varying(3072) array NOT NULL DEFAULT '{}'`);
+    }
+
+    async down(queryRunner) {
+        await queryRunner.query(`ALTER TABLE "meta" DROP COLUMN "urlPreviewDenyList"`);
+    }
+}

packages/backend/src/models/entities/Meta.ts

@@ -468,4 +468,9 @@ export class MiMeta {
 		default: 300,
 	})
 	public perUserListTimelineCacheMax: number;
+
+	@Column('varchar', {
+		length: 3072, array: true, default: '{}',
+	})
+	public urlPreviewDenyList: string[];
 }

packages/backend/src/server/api/endpoints/admin/meta.ts

@@ -298,6 +298,14 @@ export const meta = {
 				type: 'number',
 				optional: false, nullable: false,
 			},
+			urlPreviewDenyList: {
+				type: 'array',
+				optional: true, nullable: false,
+				items: {
+					type: 'string',
+					optional: false, nullable: false,
+				},
+			},
 		},
 	},
 } as const;
@@ -404,6 +412,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				perRemoteUserUserTimelineCacheMax: instance.perRemoteUserUserTimelineCacheMax,
 				perUserHomeTimelineCacheMax: instance.perUserHomeTimelineCacheMax,
 				perUserListTimelineCacheMax: instance.perUserListTimelineCacheMax,
+				urlPreviewDenyList: instance.urlPreviewDenyList,
 			};
 		});
 	}

packages/backend/src/server/api/endpoints/admin/update-meta.ts

@@ -110,6 +110,9 @@ export const paramDef = {
 		perRemoteUserUserTimelineCacheMax: { type: 'integer' },
 		perUserHomeTimelineCacheMax: { type: 'integer' },
 		perUserListTimelineCacheMax: { type: 'integer' },
+		urlPreviewDenyList: { type: 'array', nullable: true, items: {
+			type: 'string',
+		} },
 	},
 	required: [],
 } as const;
@@ -147,6 +150,10 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				set.sensitiveWords = ps.sensitiveWords.filter(Boolean);
 			}
 
+			if (Array.isArray(ps.urlPreviewDenyList)) {
+				set.urlPreviewDenyList = ps.urlPreviewDenyList.filter(Boolean);
+			}
+
 			if (ps.themeColor !== undefined) {
 				set.themeColor = ps.themeColor;
 			}

packages/backend/src/server/web/UrlPreviewService.ts

@@ -5,6 +5,7 @@
 
 import { Inject, Injectable } from '@nestjs/common';
 import { summaly } from 'summaly';
+import RE2 from 're2';
 import { DI } from '@/di-symbols.js';
 import type { Config } from '@/config.js';
 import { MetaService } from '@/core/MetaService.js';
@@ -94,6 +95,23 @@ export class UrlPreviewService {
 			summary.icon = this.wrap(summary.icon);
 			summary.thumbnail = this.wrap(summary.thumbnail);
 
+			const includeDenyList = meta.urlPreviewDenyList.some(filter => {
+				// represents RegExp
+				const regexp = /^\/(.+)\/(.*)$/.exec(filter);
+				// This should never happen due to input sanitisation.
+				if (!regexp) {
+					const words = filter.split(' ');
+					return words.every(keyword => summary.url.includes(keyword));
+				}
+				try {
+					return new RE2(regexp[1], regexp[2]).test(summary.url);
+				} catch (err) {
+					// This should never happen due to input sanitisation.
+					return false;
+				}
+			});
+			if (includeDenyList) summary.sensitive = true;
+
 			// Cache 7days
 			reply.header('Cache-Control', 'max-age=604800, immutable');