chore(deps): update dependency husky to v9

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

.github/workflows/docker.yml

@@ -34,7 +34,7 @@ jobs:
           platform=${{ matrix.platforms }}
           echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV
           echo "IMAGE=ghcr.io/${GITHUB_REPOSITORY@L}" >> $GITHUB_ENV
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
@@ -53,7 +53,7 @@ jobs:
 
       - name: Cache node_modules
         id: cache-node-modules
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: var-cache-node-modules
           key: var-cache-node-modules-${{ hashFiles('Dockerfile', 'install/package.json') }}
@@ -77,7 +77,7 @@ jobs:
           touch "${{ runner.temp }}/digests/${digest#sha256:}"
 
       - name: Upload digest
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: digests-${{ env.PLATFORM_PAIR }}
           path: ${{ runner.temp }}/digests/*
@@ -93,7 +93,7 @@ jobs:
           echo "IMAGE=ghcr.io/${GITHUB_REPOSITORY@L}" >> $GITHUB_ENV
           echo "CURRENT_DATE_NST=$(date +'%Y%m%d-%H%M%S' -d '-3 hours -30 minutes')" >> $GITHUB_ENV
       - name: Download digests
-        uses: actions/download-artifact@v6
+        uses: actions/download-artifact@v7
         with:
           path: ${{ runner.temp }}/digests
           pattern: digests-*

.github/workflows/test.yaml

@@ -81,7 +81,7 @@ jobs:
           - 27017:27017
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - run: cp install/package.json package.json
 

install/package.json

@@ -33,19 +33,19 @@
         "@fontsource/inter": "5.2.8",
         "@fontsource/poppins": "5.2.7",
         "@fortawesome/fontawesome-free": "6.7.2",
-        "@isaacs/ttlcache": "2.1.2",
+        "@isaacs/ttlcache": "2.1.3",
         "@nodebb/spider-detector": "2.0.3",
         "@popperjs/core": "2.11.8",
         "@textcomplete/contenteditable": "0.1.13",
         "@textcomplete/core": "0.1.13",
         "@textcomplete/textarea": "0.1.13",
-        "ace-builds": "1.43.4",
+        "ace-builds": "1.43.5",
         "archiver": "7.0.1",
         "async": "3.2.6",
         "autoprefixer": "10.4.22",
         "bcryptjs": "3.0.3",
         "benchpressjs": "2.5.5",
-        "body-parser": "2.2.0",
+        "body-parser": "2.2.1",
         "bootbox": "6.0.4",
         "bootstrap": "5.3.8",
         "bootswatch": "5.3.8",
@@ -57,17 +57,17 @@
         "compare-versions": "6.1.1",
         "compression": "1.8.1",
         "connect-flash": "0.1.1",
-        "connect-mongo": "5.1.0",
+        "connect-mongo": "6.0.0",
         "connect-pg-simple": "10.0.0",
         "connect-redis": "9.0.0",
         "cookie-parser": "1.4.7",
-        "cron": "4.3.4",
+        "cron": "4.4.0",
         "cropperjs": "1.6.2",
         "csrf-sync": "4.2.1",
         "daemon": "1.1.0",
         "diff": "8.0.2",
-        "esbuild": "0.27.0",
-        "express": "4.21.2",
+        "esbuild": "0.27.1",
+        "express": "4.22.1",
         "express-session": "1.18.2",
         "express-useragent": "2.0.2",
         "fetch-cookie": "3.1.0",
@@ -77,7 +77,7 @@
         "helmet": "7.2.0",
         "html-to-text": "9.0.5",
         "imagesloaded": "5.0.0",
-        "ipaddr.js": "2.2.0",
+        "ipaddr.js": "2.3.0",
         "jquery": "3.7.1",
         "jquery-deserialize": "2.0.0",
         "jquery-form": "4.3.0",
@@ -85,13 +85,13 @@
         "jquery-ui": "1.14.1",
         "jsesc": "3.1.0",
         "json2csv": "5.0.7",
-        "jsonwebtoken": "9.0.2",
+        "jsonwebtoken": "9.0.3",
         "lodash": "4.17.21",
         "logrotate-stream": "0.2.9",
-        "lru-cache": "11.2.2",
+        "lru-cache": "11.2.4",
         "mime": "3.0.0",
         "mkdirp": "3.0.1",
-        "mongodb": "6.21.0",
+        "mongodb": "7.0.0",
         "morgan": "1.10.1",
         "mousetrap": "1.6.5",
         "multer": "2.0.2",
@@ -112,7 +112,7 @@
         "nodebb-theme-peace": "2.2.49",
         "nodebb-theme-persona": "14.1.18",
         "nodebb-widget-essentials": "7.0.41",
-        "nodemailer": "7.0.10",
+        "nodemailer": "7.0.11",
         "nprogress": "0.2.0",
         "passport": "0.7.0",
         "passport-http-bearer": "1.0.1",
@@ -124,12 +124,12 @@
         "pretty": "^2.0.0",
         "progress-webpack-plugin": "1.0.16",
         "prompt": "1.3.0",
-        "redis": "5.9.0",
+        "redis": "5.10.0",
         "rimraf": "6.1.2",
         "rss": "1.2.2",
         "rtlcss": "4.3.0",
         "sanitize-html": "2.17.0",
-        "sass": "1.94.1",
+        "sass": "1.96.0",
         "satori": "0.18.3",
         "sbd": "^1.0.19",
         "semver": "7.7.3",
@@ -141,7 +141,7 @@
         "@socket.io/redis-adapter": "8.3.0",
         "sortablejs": "1.15.6",
         "spdx-license-list": "6.10.0",
-        "terser-webpack-plugin": "5.3.14",
+        "terser-webpack-plugin": "5.3.16",
         "textcomplete": "0.18.2",
         "textcomplete.contenteditable": "0.1.1",
         "timeago": "1.6.7",
@@ -152,7 +152,7 @@
         "validator": "13.15.23",
         "webpack": "5.103.0",
         "webpack-merge": "6.0.1",
-        "winston": "3.18.3",
+        "winston": "3.19.0",
         "workerpool": "10.0.1",
         "xml": "1.0.1",
         "xregexp": "5.1.2",
@@ -161,26 +161,26 @@
     },
     "devDependencies": {
         "@apidevtools/swagger-parser": "10.1.0",
-        "@commitlint/cli": "20.1.0",
-        "@commitlint/config-angular": "20.0.0",
+        "@commitlint/cli": "20.2.0",
+        "@commitlint/config-angular": "20.2.0",
         "coveralls": "3.1.1",
-        "@eslint/js": "9.39.1",
+        "@eslint/js": "9.39.2",
         "@stylistic/eslint-plugin": "5.6.1",
         "eslint-config-nodebb": "1.1.11",
         "eslint-plugin-import": "2.32.0",
         "grunt": "1.6.1",
         "grunt-contrib-watch": "1.1.0",
-        "husky": "8.0.3",
-        "jsdom": "27.2.0",
-        "lint-staged": "16.2.6",
+        "husky": "9.1.7",
+        "jsdom": "27.3.0",
+        "lint-staged": "16.2.7",
         "mocha": "11.7.5",
         "mocha-lcov-reporter": "1.3.0",
         "mockdate": "3.0.5",
         "nyc": "17.1.0",
-        "smtp-server": "3.16.1"
+        "smtp-server": "3.17.1"
     },
     "optionalDependencies": {
-        "sass-embedded": "1.93.3"
+        "sass-embedded": "1.96.0"
     },
     "resolutions": {
         "*/jquery": "3.7.1"

src/activitypub/actors.js

@@ -147,7 +147,7 @@ Actors.assert = async (ids, options = {}) => {
 					categories.add(actor.id);
 				}
 			}
-			
+
 			if (
 				!typeOk ||
 				!activitypub._constants.requiredActorProps.every(prop => actor.hasOwnProperty(prop))
@@ -351,7 +351,7 @@ Actors.assertGroup = async (ids, options = {}) => {
 	}));
 	groups = groups.filter(Boolean); // remove unresolvable actors
 
-	// Build userData object for storage
+	// Build categoryData object for storage
 	const categoryObjs = (await activitypub.mocks.category(groups)).filter(Boolean);
 	const now = Date.now();
 
@@ -400,12 +400,20 @@ Actors.assertGroup = async (ids, options = {}) => {
 		db.deleteObjectFields('handle:cid', queries.handleRemove),
 	]);
 
+	// Privilege mask
+	const [masksAdd, masksRemove] = categoryObjs.reduce(([add, remove], category) => {
+		(category?._activitypub?.postingRestrictedToMods ? add : remove).push(`cid:${category.cid}:privilegeMask`);
+		return [add, remove];
+	}, [[], []]);
+
 	await Promise.all([
 		db.setObjectBulk(bulkSet),
 		db.sortedSetAdd('usersRemote:lastCrawled', groups.map(() => now), groups.map(p => p.id)),
 		db.sortedSetAddBulk(queries.searchAdd),
 		db.setObject('handle:cid', queries.handleAdd),
 		_migratePersonToGroup(categoryObjs),
+		db.setsAdd(masksAdd, 'topics:create'),
+		db.setsRemove(masksRemove, 'topics:create'),
 	]);
 
 	return categoryObjs;

src/activitypub/inbox.js

@@ -352,6 +352,26 @@ inbox.like = async (req) => {
 	socketHelpers.upvote(result, 'notifications:upvoted-your-post-in');
 };
 
+inbox.dislike = async (req) => {
+	const { actor, object } = req.body;
+	const { type, id } = await activitypub.helpers.resolveLocalId(object.id);
+
+	if (type !== 'post' || !(await posts.exists(id))) {
+		return reject('Dislike', object, actor);
+	}
+
+	const allowed = await privileges.posts.can('posts:downvote', id, activitypub._constants.uid);
+	if (!allowed) {
+		activitypub.helpers.log(`[activitypub/inbox.like] ${id} not allowed to be downvoted.`);
+		return reject('Dislike', object, actor);
+	}
+
+	activitypub.helpers.log(`[activitypub/inbox/dislike] id ${id} via ${actor}`);
+
+	await posts.downvote(id, actor);
+	await activitypub.feps.announce(object.id, req.body);
+};
+
 inbox.announce = async (req) => {
 	let { actor, object, published, to, cc } = req.body;
 	activitypub.helpers.log(`[activitypub/inbox/announce] Parsing Announce(${object.type}) from ${actor}`);

src/activitypub/mocks.js

@@ -13,6 +13,7 @@ const categories = require('../categories');
 const posts = require('../posts');
 const topics = require('../topics');
 const messaging = require('../messaging');
+const privileges = require('../privileges');
 const plugins = require('../plugins');
 const slugify = require('../slugify');
 const translator = require('../translator');
@@ -280,6 +281,7 @@ Mocks.category = async (actors) => {
 		let {
 			url, preferredUsername, icon, /* image, */
 			name, summary, followers, inbox, endpoints, tag,
+			postingRestrictedToMods,
 		} = actor;
 		preferredUsername = slugify(preferredUsername || name);
 		/*
@@ -337,6 +339,10 @@ Mocks.category = async (actors) => {
 			inbox,
 			sharedInbox: endpoints ? endpoints.sharedInbox : null,
 			followersUrl: followers,
+
+			_activitypub: {
+				postingRestrictedToMods,
+			},
 		};
 
 		return payload;
@@ -524,12 +530,19 @@ Mocks.actors.user = async (uid) => {
 };
 
 Mocks.actors.category = async (cid) => {
-	const {
-		name, handle: preferredUsername, slug,
-		descriptionParsed: summary, backgroundImage,
-	} = await categories.getCategoryFields(cid,
-		['name', 'handle', 'slug', 'description', 'descriptionParsed', 'backgroundImage']);
-	const publicKey = await activitypub.getPublicKey('cid', cid);
+	const [
+		{
+			name, handle: preferredUsername, slug,
+			descriptionParsed: summary, backgroundImage,
+		},
+		publicKey,
+		canPost,
+	] = await Promise.all([
+		categories.getCategoryFields(cid,
+			['name', 'handle', 'slug', 'description', 'descriptionParsed', 'backgroundImage']),
+		activitypub.getPublicKey('cid', cid),
+		privileges.categories.can('topics:create', cid, -2),
+	]);
 
 	let icon;
 	if (backgroundImage) {
@@ -553,6 +566,7 @@ Mocks.actors.category = async (cid) => {
 		'@context': [
 			'https://www.w3.org/ns/activitystreams',
 			'https://w3id.org/security/v1',
+			'https://join-lemmy.org/context.json',
 		],
 		id: `${nconf.get('url')}/category/${cid}`,
 		url: `${nconf.get('url')}/category/${slug}`,
@@ -567,6 +581,7 @@ Mocks.actors.category = async (cid) => {
 		summary,
 		// image, // todo once categories have cover photos
 		icon,
+		postingRestrictedToMods: !canPost,
 
 		publicKey: {
 			id: `${nconf.get('url')}/category/${cid}#key`,

src/activitypub/notes.js

@@ -265,8 +265,8 @@ Notes.assert = async (uid, input, options = { skipChecks: false }) => {
 
 		await Notes.syncUserInboxes(tid, uid);
 
-		if (!hasTid && options.cid) {
-			// New topic, have category announce it
+		if (!hasTid && uid && options.cid) {
+			// New topic via search/post-redirect, have category announce it
 			activitypub.out.announce.topic(tid);
 		}
 

src/activitypub/out.js

@@ -277,6 +277,32 @@ Out.like.note = enabledCheck(async (uid, pid) => {
 	]);
 });
 
+Out.dislike = {};
+
+Out.dislike.note = enabledCheck(async (uid, pid) => {
+	const payload = {
+		id: `${nconf.get('url')}/uid/${uid}#activity/dislike/${encodeURIComponent(pid)}`,
+		type: 'Dislike',
+		actor: `${nconf.get('url')}/uid/${uid}`,
+		object: utils.isNumber(pid) ? `${nconf.get('url')}/post/${pid}` : pid,
+	};
+
+	if (!activitypub.helpers.isUri(pid)) { // only 1b12 announce for local likes
+		await activitypub.feps.announce(pid, payload);
+		return;
+	}
+
+	const recipient = await posts.getPostField(pid, 'uid');
+	if (!activitypub.helpers.isUri(recipient)) {
+		return;
+	}
+
+	await Promise.all([
+		activitypub.send('uid', uid, [recipient], payload),
+		activitypub.feps.announce(pid, payload),
+	]);
+});
+
 Out.announce = {};
 
 Out.announce.topic = enabledCheck(async (tid) => {

src/api/helpers.js

@@ -7,6 +7,7 @@ const posts = require('../posts');
 const privileges = require('../privileges');
 const plugins = require('../plugins');
 const activitypub = require('../activitypub');
+const utils = require('../utils');
 const socketHelpers = require('../socket.io/helpers');
 const websockets = require('../socket.io');
 const events = require('../events');
@@ -66,11 +67,22 @@ exports.doTopicAction = async function (action, event, caller, { tids }) {
 	const uids = await user.getUidsFromSet('users:online', 0, -1);
 
 	await Promise.all(tids.map(async (tid) => {
-		const title = await topics.getTopicField(tid, 'title');
+		const { title, cid, mainPid } = await topics.getTopicFields(tid, ['title', 'cid', 'mainPid']);
 		const data = await topics.tools[action](tid, caller.uid);
 		const notifyUids = await privileges.categories.filterUids('topics:read', data.cid, uids);
 		socketHelpers.emitToUids(event, data, notifyUids);
 		await logTopicAction(action, caller, tid, title);
+
+		switch(action) {
+			case 'delete': // falls through
+			case 'purge': {
+				if (utils.isNumber(cid) && parseInt(cid, 10) > 0) {
+					activitypub.out.remove.context(caller.uid, tid); // 7888-style
+					activitypub.out.delete.note(caller.uid, mainPid); // 1b12-style
+					activitypub.out.undo.announce('cid', cid, tid); // microblogs
+				}
+			}
+		}
 	}));
 };
 
@@ -135,14 +147,34 @@ async function executeCommand(caller, command, eventName, notification, data) {
 		websockets.in(`uid_${caller.uid}`).emit(`posts.${command}`, result);
 		websockets.in(data.room_id).emit(`event:${eventName}`, result);
 	}
-	if (result && command === 'upvote') {
-		socketHelpers.upvote(result, notification);
-		await activitypub.out.like.note(caller.uid, data.pid);
-	} else if (result && notification) {
-		socketHelpers.sendNotificationToPostOwner(data.pid, caller.uid, command, notification);
-	} else if (result && command === 'unvote') {
-		socketHelpers.rescindUpvoteNotification(data.pid, caller.uid);
-		await activitypub.out.undo.like(caller.uid, data.pid);
+
+	if (result) {
+		switch (command) {
+			case 'upvote': {
+				socketHelpers.upvote(result, notification);
+				await activitypub.out.like.note(caller.uid, data.pid);
+				break;
+			}
+
+			case 'downvote': {
+				await activitypub.out.dislike.note(caller.uid, data.pid);
+				break;
+			}
+
+			case 'unvote': {
+				socketHelpers.rescindUpvoteNotification(data.pid, caller.uid);
+				await activitypub.out.undo.like(caller.uid, data.pid);
+				break;
+			}
+
+			default: {
+				if (notification) {
+					socketHelpers.sendNotificationToPostOwner(data.pid, caller.uid, command, notification);
+				}
+				break;
+			}
+		}
 	}
+
 	return result;
 }

src/api/topics.js

@@ -325,13 +325,12 @@ topicsAPI.move = async (caller, { tid, cid }) => {
 
 				if (utils.isNumber(cid) && parseInt(cid, 10) === -1) {
 					activitypub.out.remove.context(caller.uid, tid); // 7888-style
-					activitypub.out.delete.note(caller.uid, topicData.mainPid); // threadiverse
-					// tbd: activitypubApi.undo.announce? // microblogs
+					activitypub.out.delete.note(caller.uid, topicData.mainPid); // 1b12-style
 				} else {
 					activitypub.out.move.context(caller.uid, tid);
 					activitypub.out.announce.topic(tid);
 				}
-				activitypub.out.undo.announce('cid', topicData.cid, tid);
+				activitypub.out.undo.announce('cid', topicData.cid, tid); // microblogs
 			}
 
 			await events.log({

src/database/mongo.js

@@ -65,7 +65,7 @@ mongoModule.init = async function (opts) {
 };
 
 mongoModule.createSessionStore = async function (options) {
-	const MongoStore = require('connect-mongo');
+	const { MongoStore } = require('connect-mongo');
 	const meta = require('../meta');
 
 	const store = MongoStore.create({

src/database/mongo/sets.js

@@ -68,6 +68,31 @@ module.exports = function (module) {
 		}
 	};
 
+	module.setAddBulk = async function (data) {
+		if (!data.length) {
+			return;
+		}
+
+		const bulk = module.client.collection('objects').initializeUnorderedBulkOp();
+
+		data.forEach(([key, member]) => {
+			bulk.find({ _key: key }).upsert().updateOne({
+				$addToSet: {
+					members: helpers.valueToString(member),
+				},
+			});
+		});
+		try {
+			await bulk.execute();
+		} catch (err) {
+			if (err && err.message.includes('E11000 duplicate key error')) {
+				console.log(new Error('e11000').stack, data);
+				return await module.setAddBulk(data);
+			}
+			throw err;
+		}
+	};
+
 	module.setRemove = async function (key, value) {
 		if (!Array.isArray(value)) {
 			value = [value];
@@ -75,11 +100,17 @@ module.exports = function (module) {
 
 		value = value.map(v => helpers.valueToString(v));
 
-		await module.client.collection('objects').updateMany({
+		const coll = module.client.collection('objects');
+		await coll.updateMany({
 			_key: Array.isArray(key) ? { $in: key } : key,
 		}, {
 			$pullAll: { members: value },
 		});
+
+		await coll.deleteMany({
+			_key: Array.isArray(key) ? { $in: key } : key,
+			members: { $size: 0 },
+		});
 	};
 
 	module.setsRemove = async function (keys, value) {
@@ -88,11 +119,17 @@ module.exports = function (module) {
 		}
 		value = helpers.valueToString(value);
 
-		await module.client.collection('objects').updateMany({
+		const coll = module.client.collection('objects');
+		await coll.updateMany({
 			_key: { $in: keys },
 		}, {
 			$pull: { members: value },
 		});
+
+		await coll.deleteMany({
+			_key: { $in: keys },
+			members: { $size: 0 },
+		});
 	};
 
 	module.isSetMember = async function (key, value) {

src/database/postgres/main.js

@@ -28,6 +28,11 @@ module.exports = function (module) {
 			return members.map(member => member.length > 0);
 		}
 
+		async function checkIfSetsExist(keys) {
+			const members = await Promise.all(keys.map(module.getSetMembers));
+			return members.map(member => member.length > 0);
+		}
+
 		async function checkIfKeysExist(keys) {
 			const res = await module.pool.query({
 				name: 'existsArray',
@@ -44,13 +49,16 @@ module.exports = function (module) {
 		if (isArray) {
 			const types = await Promise.all(key.map(module.type));
 			const zsetKeys = key.filter((_key, i) => types[i] === 'zset');
-			const otherKeys = key.filter((_key, i) => types[i] !== 'zset');
-			const [zsetExits, otherExists] = await Promise.all([
+			const setKeys = key.filter((_key, i) => types[i] === 'set');
+			const otherKeys = key.filter((_key, i) => types[i] !== 'zset' && types[i] !== 'set');
+			const [zsetExits, setExists, otherExists] = await Promise.all([
 				checkIfzSetsExist(zsetKeys),
+				checkIfSetsExist(setKeys),
 				checkIfKeysExist(otherKeys),
 			]);
 			const existsMap = Object.create(null);
 			zsetKeys.forEach((k, i) => { existsMap[k] = zsetExits[i]; });
+			setKeys.forEach((k, i) => { existsMap[k] = setExists[i]; });
 			otherKeys.forEach((k, i) => { existsMap[k] = otherExists[i]; });
 			return key.map(k => existsMap[k]);
 		}
@@ -58,6 +66,9 @@ module.exports = function (module) {
 		if (type === 'zset') {
 			const members = await module.getSortedSetRange(key, 0, 0);
 			return members.length > 0;
+		} else if (type === 'set') {
+			const members = await module.getSetMembers(key);
+			return members.length > 0;
 		}
 		const res = await module.pool.query({
 			name: 'exists',

src/database/postgres/sets.js

@@ -54,6 +54,32 @@ DO NOTHING`,
 		});
 	};
 
+	module.setAddBulk = async function (data) {
+		if (!data.length) {
+			return;
+		}
+		const keys = [];
+		const members = [];
+
+		for (const [key, member] of data) {
+			keys.push(key);
+			members.push(member);
+		}
+		await module.transaction(async (client) => {
+			await helpers.ensureLegacyObjectsType(client, keys, 'set');
+			await client.query({
+				name: 'setAddBulk',
+				text: `
+INSERT INTO "legacy_set" ("_key", "member")
+SELECT k, m
+FROM UNNEST($1::TEXT[], $2::TEXT[]) AS t(k, m)
+ON CONFLICT ("_key", "member")
+DO NOTHING;`,
+				values: [keys, members],
+			});
+		});
+	};
+
 	module.setRemove = async function (key, value) {
 		if (!Array.isArray(key)) {
 			key = [key];

src/database/redis/sets.js

@@ -14,11 +14,29 @@ module.exports = function (module) {
 	};
 
 	module.setsAdd = async function (keys, value) {
-		if (!Array.isArray(keys) || !keys.length) {
+		if (!Array.isArray(keys) || !keys.length || !value) {
+			return;
+		}
+		if (!Array.isArray(value)) {
+			value = [value];
+		}
+		if (!value.length) {
 			return;
 		}
 		const batch = module.client.batch();
-		keys.forEach(k => batch.sAdd(String(k), String(value)));
+		keys.forEach((k) => {
+			value.forEach(v => batch.sAdd(String(k), String(v)));
+		});
+		await helpers.execBatch(batch);
+	};
+
+	module.setAddBulk = async function (data) {
+		if (!data.length) {
+			return;
+		}
+
+		const batch = module.client.batch();
+		data.forEach(([key, member]) => batch.sAdd(String(key), String(member)));
 		await helpers.execBatch(batch);
 	};
 

src/posts/votes.js

@@ -177,16 +177,18 @@ module.exports = function (Posts) {
 		}
 		const now = Date.now();
 
-		if (type === 'upvote' && !unvote) {
-			await db.sortedSetAdd(`uid:${uid}:upvote`, now, pid);
-		} else {
-			await db.sortedSetRemove(`uid:${uid}:upvote`, pid);
-		}
+		if (utils.isNumber(uid)) {
+			if (type === 'upvote' && !unvote) {
+				await db.sortedSetAdd(`uid:${uid}:upvote`, now, pid);
+			} else {
+				await db.sortedSetRemove(`uid:${uid}:upvote`, pid);
+			}
 
-		if (type === 'upvote' || unvote) {
-			await db.sortedSetRemove(`uid:${uid}:downvote`, pid);
-		} else {
-			await db.sortedSetAdd(`uid:${uid}:downvote`, now, pid);
+			if (type === 'upvote' || unvote) {
+				await db.sortedSetRemove(`uid:${uid}:downvote`, pid);
+			} else {
+				await db.sortedSetAdd(`uid:${uid}:downvote`, now, pid);
+			}
 		}
 
 		const postData = await Posts.getPostFields(pid, ['pid', 'uid', 'tid']);

src/privileges/categories.js

@@ -96,14 +96,16 @@ privsCategories.get = async function (cid, uid) {
 		'topics:tag', 'read', 'posts:view_deleted',
 	];
 
-	const [userPrivileges, isAdministrator, isModerator] = await Promise.all([
+	let [userPrivileges, isAdministrator, isModerator] = await Promise.all([
 		helpers.isAllowedTo(privs, uid, cid),
 		user.isAdministrator(uid),
 		user.isModerator(uid, cid),
 	]);
 
-	const combined = userPrivileges.map(allowed => allowed || isAdministrator);
-	const privData = _.zipObject(privs, combined);
+	if (utils.isNumber(cid)) {
+		userPrivileges = userPrivileges.map(allowed => allowed || isAdministrator);
+	}
+	const privData = _.zipObject(privs, userPrivileges);
 	const isAdminOrMod = isAdministrator || isModerator;
 
 	return await plugins.hooks.fire('filter:privileges.categories.get', {

src/privileges/helpers.js

@@ -4,6 +4,7 @@
 const _ = require('lodash');
 const validator = require('validator');
 
+const db = require('../database');
 const groups = require('../groups');
 const user = require('../user');
 const categories = require('../categories');
@@ -25,16 +26,25 @@ helpers.isUsersAllowedTo = async function (privilege, uids, cid) {
 		cid = -1;
 	}
 
-	const [hasUserPrivilege, hasGroupPrivilege] = await Promise.all([
-		groups.isMembers(uids, `cid:${cid}:privileges:${privilege}`),
-		groups.isMembersOfGroupList(uids, `cid:${cid}:privileges:groups:${privilege}`),
-	]);
-	const allowed = uids.map((uid, index) => hasUserPrivilege[index] || hasGroupPrivilege[index]);
-	const result = await plugins.hooks.fire('filter:privileges:isUsersAllowedTo', { allowed: allowed, privilege: privilege, uids: uids, cid: cid });
+	let allowed;
+	const masked = await db.isSetMember(`cid:${cid}:privilegeMask`, privilege);
+	if (!masked) {
+		const [hasUserPrivilege, hasGroupPrivilege] = await Promise.all([
+			groups.isMembers(uids, `cid:${cid}:privileges:${privilege}`),
+			groups.isMembersOfGroupList(uids, `cid:${cid}:privileges:groups:${privilege}`),
+		]);
+		allowed = uids.map((uid, index) => hasUserPrivilege[index] || hasGroupPrivilege[index]);
+	} else {
+		allowed = uids.map(() => false);
+	}
+
+	const result = await plugins.hooks.fire('filter:privileges:isUsersAllowedTo', { allowed, privilege, uids, cid });
 	return result.allowed;
 };
 
 helpers.isAllowedTo = async function (privilege, uidOrGroupName, cid) {
+	const _cid = cid; // original passed-in cid needed for privilege mask checks
+
 	// Remote categories (non-numeric) inherit world privileges
 	if (Array.isArray(cid)) {
 		cid = cid.map(cid => (utils.isNumber(cid) ? cid : -1));
@@ -44,10 +54,15 @@ helpers.isAllowedTo = async function (privilege, uidOrGroupName, cid) {
 
 	let allowed;
 	if (Array.isArray(privilege) && !Array.isArray(cid)) {
+		const mask = await db.isSetMembers(`cid:${_cid}:privilegeMask`, privilege);
 		allowed = await isAllowedToPrivileges(privilege, uidOrGroupName, cid);
+		allowed = allowed.map((allowed, idx) => mask[idx] ? false : allowed);
 	} else if (Array.isArray(cid) && !Array.isArray(privilege)) {
+		const mask = await db.isMemberOfSets(_cid.map(cid => `cid:${cid}:privilegeMask`), privilege);
 		allowed = await isAllowedToCids(privilege, uidOrGroupName, cid);
+		allowed = allowed.map((allowed, idx) => mask[idx] ? false : allowed);
 	}
+
 	if (allowed) {
 		({ allowed } = await plugins.hooks.fire('filter:privileges:isAllowedTo', { allowed: allowed, privilege: privilege, uid: uidOrGroupName, cid: cid }));
 		return allowed;

src/topics/unread.js

@@ -290,7 +290,7 @@ module.exports = function (Topics) {
 	};
 
 	Topics.markAsRead = async function (tids, uid) {
-		if (!Array.isArray(tids) || !tids.length) {
+		if (!Array.isArray(tids) || !tids.length || !utils.isNumber(uid)) {
 			return false;
 		}
 

src/upgrades/4.7.1/remove_extraneous_ap_data.js

@@ -0,0 +1,24 @@
+'use strict';
+
+const db = require('../../database');
+const batch = require('../../batch');
+
+module.exports = {
+	name: 'Remove extraneous upvote and tids_read data for remote users',
+	timestamp: Date.UTC(2025, 11, 11),
+	method: async function () {
+		const { progress } = this;
+		await batch.processSortedSet('usersRemote:lastCrawled', async (uids) => {
+			const readKeys = uids.map(uid => `uid:${uid}:tids_read`);
+			const voteKeys = uids.map(uid => `uid:${uid}:upvote`);
+
+			const combined = readKeys.concat(voteKeys);
+
+			await db.deleteAll(combined);
+			progress.incr(uids.length);
+		}, {
+			batch: 500,
+			progress,
+		});
+	},
+};

test/activitypub/feps.js

@@ -164,6 +164,7 @@ describe('FEPs', () => {
 					});
 					pid = id;
 					({ activity } = await helpers.mocks.create(note));
+
 					await activitypub.inbox.create({ body: activity });
 
 					const activities = Array.from(activitypub._sent);
@@ -180,7 +181,6 @@ describe('FEPs', () => {
 						return activity.type === 'Announce' &&
 							activity.object && activity.object.type === 'Note';
 					});
-
 					assert(test1 && test2);
 				});
 

test/activitypub/notes.js

@@ -432,6 +432,7 @@ describe('Notes', () => {
 
 		describe('Create', () => {
 			let uid;
+			let cid;
 
 			before(async () => {
 				uid = await user.create({ username: utils.generateUUID() });
@@ -451,6 +452,17 @@ describe('Notes', () => {
 					assert.strictEqual(cid, -1);
 				});
 
+				it('should not append to the tids_read sorted set', async () => {
+					const { note, id } = helpers.mocks.note();
+					const { activity } = helpers.mocks.create(note);
+
+					await db.sortedSetAdd(`followersRemote:${note.attributedTo}`, Date.now(), uid);
+					await activitypub.inbox.create({ body: activity });
+
+					const exists = await db.exists(`uid:${note.attributedTo}:tids_read`);
+					assert(!exists);
+				});
+
 				it('should create a new topic in a remote category if addressed (category same-origin)', async () => {
 					const { id: remoteCid } = helpers.mocks.group();
 					const { note, id } = helpers.mocks.note({
@@ -467,40 +479,63 @@ describe('Notes', () => {
 				});
 
 				it('should create a new topic in cid -1 if a non-same origin remote category is addressed', async function () {
-					this.timeout(30000);
-					const start = Date.now();
 					const { id: remoteCid } = helpers.mocks.group({
 						id: `https://example.com/${utils.generateUUID()}`,
 					});
-					console.log('1', Date.now() - start);
 					const { note, id } = helpers.mocks.note({
 						audience: [remoteCid],
 					});
-					console.log('2', Date.now() - start);
 					const { activity } = helpers.mocks.create(note);
-					console.log('3', Date.now() - start);
 					try {
 						await activitypub.inbox.create({ body: activity });
 					} catch (err) {
-						console.log('error in test', err.stack);
 						assert(false);
 					}
 
-					console.log('4', Date.now() - start);
 					assert(await posts.exists(id));
-					console.log('5', Date.now() - start);
 					const cid = await posts.getCidByPid(id);
-					console.log('6', Date.now() - start);
 					assert.strictEqual(cid, -1);
 				});
 			});
+
+			describe('(Like)', () => {
+				let pid;
+				let voterUid;
+
+				before(async () => {
+					({ cid } = await categories.create({ name: utils.generateUUID() }));
+					const { postData } = await topics.post({
+						uid,
+						cid,
+						title: utils.generateUUID(),
+						content: utils.generateUUID(),
+					});
+					pid = postData.pid;
+					const object = await activitypub.mocks.notes.public(postData);
+					const { activity } = helpers.mocks.like({ object });
+					voterUid = activity.actor;
+					await activitypub.inbox.like({ body: activity });
+				});
+
+				it('should increment a like for the post', async () => {
+					const voted = await posts.hasVoted(pid, voterUid);
+					const count = await posts.getPostField(pid, 'upvotes');
+					assert(voted);
+					assert.strictEqual(count, 1);
+				});
+
+				it('should not append to the uid upvotes zset', async () => {
+					const exists = await db.exists(`uid:${voterUid}:upvote`);
+					assert(!exists);
+				});
+			});
 		});
 
 		describe('Announce', () => {
 			let cid;
 
 			before(async () => {
-				({ cid } = await categories.create({ name: utils.generateUUID().slice(0, 8) }));
+				({ cid } = await categories.create({ name: utils.generateUUID() }));
 			});
 
 			describe('(Create)', () => {

test/activitypub/privileges.js

@@ -203,4 +203,241 @@ describe('Privilege logic for remote users/content (ActivityPub)', () => {
 			});
 		});
 	});
+});
+
+describe('Privilege masking', () => {
+	before(async () => {
+		// Grant default fediverse privileges
+		await install.giveWorldPrivileges();
+	});
+
+	describe('control', () => {
+		let cid;
+		let uid;
+
+		before(async () => {
+			// Set up a standard mock group
+			({ id: cid } = helpers.mocks.group());
+
+			// Unprivileged user for testing
+			uid = await user.create({ username: utils.generateUUID().slice(0, 10) });
+		});
+
+		it('should properly assert the remote category', async () => {
+			const assertion = await activitypub.actors.assertGroup([cid]);
+			const exists = await categories.exists(cid);
+
+			assert(assertion);
+			assert(exists);
+		});
+
+		it('should not set up a privilege mask for that category', async () => {
+			const exists = await db.exists(`cid:${cid}:privilegeMask`);
+			assert(!exists);
+		});
+
+		it('should pass the privileges .can() check if requested', async () => {
+			const set = await privileges.categories.get(cid, uid);
+			const can = await privileges.categories.can('topics:create', cid, uid);
+			assert(can);
+		});
+
+		it('should return true in the privilege set when requested', async () => {
+			const set = await privileges.categories.get(cid, uid);
+
+			assert(set);
+			assert(set['topics:create']);
+		});
+	});
+
+	describe('postingRestrictedToMods (true on assert)', () => {
+		let cid;
+		let uid;
+
+		before(async () => {
+			// Set up a mock group with `postingRestrictedToMods` bit set
+			({ id: cid } = helpers.mocks.group({
+				postingRestrictedToMods: true,
+			}));
+
+			// Unprivileged user for testing
+			uid = await user.create({ username: utils.generateUUID().slice(0, 10) });
+		});
+
+		it('should properly assert the remote category', async () => {
+			const assertion = await activitypub.actors.assertGroup([cid]);
+			const exists = await categories.exists(cid);
+
+			assert(assertion);
+			assert(exists);
+		});
+
+		it('should set up a privilege mask for that category', async () => {
+			const exists = await db.exists(`cid:${cid}:privilegeMask`);
+			assert(exists);
+		});
+
+		it('should contain a single mask', async () => {
+			const members = await db.getSetMembers(`cid:${cid}:privilegeMask`);
+
+			assert(members);
+			assert.strictEqual(members.length, 1);
+			assert.strictEqual(members[0], 'topics:create');
+		});
+
+		it('should fail the privileges .can() check if requested', async () => {
+			const can = await privileges.categories.can('topics:create', cid, uid);
+			assert(!can);
+		});
+
+		it('should return false in the privilege set when requested', async () => {
+			const set = await privileges.categories.get(cid, uid);
+
+			assert(set);
+			assert(!set['topics:create']);
+		});
+	});
+
+	describe('postingRestrictedToMods (true on assert and re-assertion)', () => {
+		let cid;
+		let uid;
+
+		before(async () => {
+			// Set up a mock group with `postingRestrictedToMods` bit set
+			({ id: cid } = helpers.mocks.group({
+				postingRestrictedToMods: true,
+			}));
+
+			// Unprivileged user for testing
+			uid = await user.create({ username: utils.generateUUID().slice(0, 10) });
+
+			// Assert group, then re-assert again
+			await activitypub.actors.assertGroup([cid]);
+			await activitypub.actors.assertGroup([cid], { update: true });
+		});
+
+		it('should fail the privileges .can() check if requested', async () => {
+			const can = await privileges.categories.can('topics:create', cid, uid);
+			assert(!can);
+		});
+
+		it('should return false in the privilege set when requested', async () => {
+			const set = await privileges.categories.get(cid, uid);
+
+			assert(set);
+			assert(!set['topics:create']);
+		});
+	});
+
+	describe('postingRestrictedToMods (true on assert, false on update)', () => {
+		let cid;
+		let uid;
+
+		before(async () => {
+			// Set up a mock group with `postingRestrictedToMods` bit set
+			({ id: cid } = helpers.mocks.group({
+				postingRestrictedToMods: true,
+			}));
+
+			// Unprivileged user for testing
+			uid = await user.create({ username: utils.generateUUID().slice(0, 10) });
+
+			await activitypub.actors.assertGroup([cid]);
+
+			// Group updated "remotely"
+			helpers.mocks.group({
+				id: cid,
+				postingRestrictedToMods: false,
+			});
+		});
+
+		it('should remove the privilege mask if the bit is not present on group actor update', async () => {
+			let can = await privileges.categories.can('topics:create', cid, uid);
+			assert(!can, 'Initial state should be denied due to mask.');
+
+			// Group re-assertion
+			await activitypub.actors.assertGroup([cid], { update: true });
+
+			// Ensure mask is gone from db
+			const memberCount = await db.setCount(`cid:${cid}:privilegeMask`);
+			assert.strictEqual(memberCount, 0);
+
+			can = await privileges.categories.can('topics:create', cid, uid);
+			assert(can, 'Privilege should be restored after mask removal.');
+		});
+	});
+
+	describe('postingRestrictedToMods (true on assert, property missing on update)', () => {
+		let cid;
+		let uid;
+
+		before(async () => {
+			// Set up a mock group with `postingRestrictedToMods` bit set
+			({ id: cid } = helpers.mocks.group({
+				postingRestrictedToMods: true,
+			}));
+
+			// Unprivileged user for testing
+			uid = await user.create({ username: utils.generateUUID().slice(0, 10) });
+
+			await activitypub.actors.assertGroup([cid]);
+
+			// Group updated "remotely"
+			helpers.mocks.group({
+				id: cid,
+			});
+		});
+
+		it('should remove the privilege mask if the bit is not present on group actor update', async () => {
+			let can = await privileges.categories.can('topics:create', cid, uid);
+			assert(!can, 'Initial state should be denied due to mask.');
+
+			// Group re-assertion
+			await activitypub.actors.assertGroup([cid], { update: true });
+
+			// Ensure mask is gone from db
+			const memberCount = await db.setCount(`cid:${cid}:privilegeMask`);
+			assert.strictEqual(memberCount, 0);
+
+			can = await privileges.categories.can('topics:create', cid, uid);
+			assert(can, 'Privilege should be restored after mask removal.');
+		});
+	});
+
+	describe('postingRestrictedToMods (false on assert, true on update)', () => {
+		let cid;
+		let uid;
+
+		before(async () => {
+			// Set up a mock group with `postingRestrictedToMods` bit set to false
+			({ id: cid } = helpers.mocks.group({
+				postingRestrictedToMods: false,
+			}));
+
+			// Unprivileged user for testing
+			uid = await user.create({ username: utils.generateUUID().slice(0, 10) });
+
+			await activitypub.actors.assertGroup([cid]);
+
+
+			// Update group "remotely", re-assert
+			helpers.mocks.group({
+				id: cid,
+				postingRestrictedToMods: true,
+			});
+			await activitypub.actors.assertGroup([cid], { update: true });
+		});
+
+		it('should fail the privileges .can() check if requested', async () => {
+			const can = await privileges.categories.can('topics:create', cid, uid);
+			assert(!can);
+		});
+
+		it('should return false in the privilege set when requested', async () => {
+			const set = await privileges.categories.get(cid, uid);
+
+			assert(set);
+			assert(!set['topics:create']);
+		});
+	});
 });

test/categories.js

@@ -1,10 +1,11 @@
 'use strict';
 
+const db = require('./mocks/databasemock');
+
 const assert = require('assert');
 const nconf = require('nconf');
 
 const request = require('../src/request');
-const db = require('./mocks/databasemock');
 const Categories = require('../src/categories');
 const Topics = require('../src/topics');
 const User = require('../src/user');

test/database/sets.js

@@ -88,6 +88,36 @@ describe('Set methods', () => {
 				done();
 			});
 		});
+
+		it('should add the values to each set', async () => {
+			await db.setsAdd(['saddarray1', 'saddarray2', 'saddarray3'], ['v1', 'v2', 'v3']);
+			const data = await db.getSetsMembers(['saddarray1', 'saddarray2', 'saddarray3']);
+			data.forEach(members => members.sort());
+			assert.deepStrictEqual(data, [
+				['v1', 'v2', 'v3'],
+				['v1', 'v2', 'v3'],
+				['v1', 'v2', 'v3'],
+			]);
+		});
+	});
+
+	describe('setAddBulk()', () => {
+		it('should add multiple key-member pairs', async () => {
+			await db.setAddBulk([
+				['bulkSet1', 'value1'],
+				['bulkSet2', 'value2'],
+			]);
+			let data = await db.getSetMembers('bulkSet1');
+			assert.deepStrictEqual(data, ['value1']);
+			data = await db.getSetMembers('bulkSet2');
+			assert.deepStrictEqual(data, ['value2']);
+			await db.setAddBulk([
+				['bulkSet1', 'value1'],
+				['bulkSet1', 'value3'],
+			]);
+			data = await db.getSetMembers('bulkSet1');
+			assert.deepStrictEqual(data.sort(), ['value1', 'value3']);
+		});
 	});
 
 	describe('getSetsMembers()', () => {
@@ -208,57 +238,42 @@ describe('Set methods', () => {
 	});
 
 	describe('setRemove()', () => {
-		before((done) => {
-			db.setAdd('testSet6', [1, 2], done);
+		it('should remove an element from set', async () => {
+			await db.setAdd('testSet6', [1, 2]);
+			await db.setRemove('testSet6', '2');
+
+			const isMember = await db.isSetMember('testSet6', '2');
+			assert.equal(isMember, false);
 		});
 
-		it('should remove a element from set', (done) => {
-			db.setRemove('testSet6', '2', function (err) {
-				assert.equal(err, null);
-				assert.equal(arguments.length, 1);
+		it('should remove multiple elements from set', async () => {
+			await db.setAdd('multiRemoveSet', [1, 2, 3, 4, 5]);
+			await db.setRemove('multiRemoveSet', [1, 3, 5]);
 
-				db.isSetMember('testSet6', '2', (err, isMember) => {
-					assert.equal(err, null);
-					assert.equal(isMember, false);
-					done();
-				});
-			});
+			const members = await db.getSetMembers('multiRemoveSet');
+			assert(members.includes('2'));
+			assert(members.includes('4'));
 		});
 
-		it('should remove multiple elements from set', (done) => {
-			db.setAdd('multiRemoveSet', [1, 2, 3, 4, 5], (err) => {
-				assert.ifError(err);
-				db.setRemove('multiRemoveSet', [1, 3, 5], (err) => {
-					assert.ifError(err);
-					db.getSetMembers('multiRemoveSet', (err, members) => {
-						assert.ifError(err);
-						assert(members.includes('2'));
-						assert(members.includes('4'));
-						done();
-					});
-				});
-			});
+		it('should remove multiple values from multiple keys', async () => {
+			await db.setAdd('multiSetTest1', ['one', 'two', 'three', 'four']);
+			await db.setAdd('multiSetTest2', ['three', 'four', 'five', 'six']);
+			await db.setRemove(['multiSetTest1', 'multiSetTest2'], ['three', 'four', 'five', 'doesnt exist']);
+
+			const members = await db.getSetsMembers(['multiSetTest1', 'multiSetTest2']);
+			assert.equal(members[0].length, 2);
+			assert.equal(members[1].length, 1);
+			assert(members[0].includes('one'));
+			assert(members[0].includes('two'));
+			assert(members[1].includes('six'));
 		});
 
-		it('should remove multiple values from multiple keys', (done) => {
-			db.setAdd('multiSetTest1', ['one', 'two', 'three', 'four'], (err) => {
-				assert.ifError(err);
-				db.setAdd('multiSetTest2', ['three', 'four', 'five', 'six'], (err) => {
-					assert.ifError(err);
-					db.setRemove(['multiSetTest1', 'multiSetTest2'], ['three', 'four', 'five', 'doesnt exist'], (err) => {
-						assert.ifError(err);
-						db.getSetsMembers(['multiSetTest1', 'multiSetTest2'], (err, members) => {
-							assert.ifError(err);
-							assert.equal(members[0].length, 2);
-							assert.equal(members[1].length, 1);
-							assert(members[0].includes('one'));
-							assert(members[0].includes('two'));
-							assert(members[1].includes('six'));
-							done();
-						});
-					});
-				});
-			});
+		it('should remove set if all elements are removed', async () => {
+			await db.setAdd('toBeDeletedSet', ['a', 'b']);
+			await db.setRemove('toBeDeletedSet', ['a', 'b']);
+
+			const exists = await db.exists('toBeDeletedSet');
+			assert.equal(exists, false);
 		});
 	});