fix(api): enforce scoped perms, age gates, audit logs (#2076)

fluxer_api/src/api/search/GlobalSearchService.ts

@@ -30,6 +30,7 @@ import {channelNeedsReindexing} from './ChannelIndexingUtils';
 import type {IMessageSearchService} from './IMessageSearchService';
 import {MessageSearchResponseMapper} from './MessageSearchResponseMapper';
 import {searchExistingMessages} from './MessageSearchResultReconciler';
+import {channelRequiresAgeVerification} from './SearchNsfwUtils';
 
 const CHANNEL_INDEX_CHECK_CONCURRENCY = 32;
 const CHANNEL_INDEX_JOB_ENQUEUE_CONCURRENCY = 16;
@@ -101,7 +102,7 @@ export class GlobalSearchService {
 			this.guildService.search.collectAccessibleGuildChannels(params.userId),
 			this.findDmScopeContextChannel(params.userId, params.includeChannelId),
 		]);
-		const {accessibleChannels, unindexedChannelIds, guildNsfwLevels} = guildAccess;
+		const {accessibleChannels, unindexedChannelIds, guildNsfwLevels, parentCategories} = guildAccess;
 		if (unindexedChannelIds.size > 0) {
 			await this.queueIndexingChannels(unindexedChannelIds);
 			return {indexing: true};
@@ -133,7 +134,7 @@ export class GlobalSearchService {
 			if (guildIsAgeRestricted) {
 				return canIncludeNsfw;
 			}
-			if (channel.isNsfw) {
+			if (channelRequiresAgeVerification(channel, parentCategories, false)) {
 				return canIncludeNsfw;
 			}
 			return true;

fluxer_api/src/api/search/SearchNsfwUtils.ts

@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+import {ContentWarningLevel} from '@fluxer/constants/src/GuildConstants';
+import {channelToContentWarningView, computeEffectiveChannelNsfw} from '../channel/utils/EffectiveContentWarning';
+import type {Channel} from '../models/Channel';
+
+export function channelRequiresAgeVerification(
+	channel: Channel,
+	channelsById: ReadonlyMap<string, Channel>,
+	guildNsfw: boolean,
+): boolean {
+	const parentCategory =
+		channel.parentId != null ? (channelsById.get(channel.parentId.toString()) ?? null) : null;
+	return computeEffectiveChannelNsfw(
+		channelToContentWarningView(channel),
+		parentCategory ? channelToContentWarningView(parentCategory) : null,
+		{nsfw: guildNsfw, contentWarningLevel: ContentWarningLevel.INHERIT, contentWarningText: null},
+	);
+}