345 lines
12 KiB
JavaScript
345 lines
12 KiB
JavaScript
const Message = require('../message');
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const ActivityPubObject = require('./object');
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const { Errors } = require('../enig_error');
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const { getISOTimestampString } = require('../database');
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const User = require('../user');
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const {
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parseTimestampOrNow,
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messageToHtml,
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htmlToMessageBody,
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recipientIdsFromObject,
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} = require('./util');
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const { isAnsi } = require('../string_util');
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// deps
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const { v5: UUIDv5 } = require('uuid');
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const Actor = require('./actor');
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const Collection = require('./collection');
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const async = require('async');
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const { isString, isObject, truncate } = require('lodash');
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const PublicMessageIdNamespace = 'a26ae389-5dfb-4b24-a58e-5472085c8e42';
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const APDefaultSummary = '[ActivityPub]';
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module.exports = class Note extends ActivityPubObject {
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constructor(obj) {
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super(obj, null); // Note are wrapped
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}
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isValid() {
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if (!super.isValid()) {
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return false;
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}
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if (this.type !== 'Note') {
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return false;
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}
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// :TODO: validate required properties
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return true;
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}
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recipientIds() {
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return recipientIdsFromObject(this);
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}
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static fromPublicNoteId(noteId, cb) {
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Collection.objectByEmbeddedId(noteId, (err, obj, objInfo) => {
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if (err) {
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return cb(err);
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}
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if (!obj) {
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return cb(null, null);
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}
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if (objInfo.isPrivate || !obj.object || obj.object.type !== 'Note') {
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return cb(null, null);
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}
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return cb(null, new Note(obj.object));
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});
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}
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// A local Message bound for ActivityPub
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static fromLocalMessage(message, webServer, cb) {
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const localUserId = message.getLocalFromUserId();
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if (!localUserId) {
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return cb(Errors.UnexpectedState('Invalid user ID for local user!'));
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}
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const remoteActorAccount = message.getRemoteToUser();
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if (!remoteActorAccount && message.isPrivate()) {
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return cb(
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Errors.UnexpectedState('Message does not contain a remote address')
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);
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}
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async.waterfall(
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[
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callback => {
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return User.getUser(localUserId, callback);
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},
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(fromUser, callback) => {
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Actor.fromLocalUser(fromUser, webServer, (err, fromActor) => {
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return callback(err, fromUser, fromActor);
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});
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},
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(fromUser, fromActor, callback) => {
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if (message.isPrivate()) {
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Actor.fromId(remoteActorAccount, (err, remoteActor) => {
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return callback(err, fromUser, fromActor, remoteActor);
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});
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} else {
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return callback(null, fromUser, fromActor, null);
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}
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},
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(fromUser, fromActor, remoteActor, callback) => {
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if (!message.replyToMsgId) {
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return callback(null, null, fromUser, fromActor, remoteActor);
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}
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Message.getMetaValuesByMessageId(
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message.replyToMsgId,
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Message.WellKnownMetaCategories.ActivityPub,
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Message.ActivityPubPropertyNames.NoteId,
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(err, replyToNoteId) => {
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// (ignore error)
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return callback(
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null,
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replyToNoteId,
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fromUser,
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fromActor,
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remoteActor
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);
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}
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);
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},
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(replyToNoteId, fromUser, fromActor, remoteActor, callback) => {
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const to = [
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message.isPrivate()
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? remoteActor.id
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: Collection.PublicCollectionId,
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];
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const sourceMediaType = isAnsi(message.message)
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? 'text/x-ansi' // ye ol' https://lists.freedesktop.org/archives/xdg/2006-March/006214.html
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: 'text/plain';
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// https://docs.joinmastodon.org/spec/activitypub/#properties-used
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const obj = {
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id: ActivityPubObject.makeObjectId(webServer, 'note'),
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type: 'Note',
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published: getISOTimestampString(message.modTimestamp),
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to,
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attributedTo: fromActor.id,
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summary: message.subject.trim(),
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content: messageToHtml(message),
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source: {
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content: message.message,
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mediaType: sourceMediaType,
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},
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sensitive: message.subject.startsWith('[NSFW]'),
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};
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if (replyToNoteId) {
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obj.inReplyTo = replyToNoteId;
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}
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const note = new Note(obj);
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const context = ActivityPubObject.makeContext([], {
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sensitive: 'as:sensitive',
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});
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return callback(null, {
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note,
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fromUser,
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remoteActor,
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context,
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});
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},
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],
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(err, noteInfo) => {
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return cb(err, noteInfo);
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}
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);
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}
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toMessage(options, cb) {
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if (!options.toUser || !isString(options.areaTag)) {
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return cb(Errors.MissingParam('Missing one or more required options!'));
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}
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const isPrivate = isObject(options.toUser);
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//
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// Message UUIDs are unique in the message database;
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// However, we may need to deliver a particular message to:
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// - #Public / sharedInbox
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// - 1:N private user inboxes
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//
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// In both cases, the UUID is stable. That is, the same ID
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// will equal the same UUID as to prevent dupes.
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//
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const makeMessageUuid = () => {
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if (isPrivate) {
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// UUID specific to the target user
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const url = `${this.id}/${options.toUser.userId}`;
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return UUIDv5(url, UUIDv5.URL);
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} else {
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return UUIDv5(this.id, PublicMessageIdNamespace);
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}
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};
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// Fetch the remote actor info to get their user info
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Actor.fromId(this.attributedTo, (err, attributedToActor, fromActorSubject) => {
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if (err) {
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return cb(err);
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}
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const message = new Message({
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uuid: makeMessageUuid(),
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});
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message.fromUserName = fromActorSubject || this.attributedTo;
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//
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// Note's can be addressed to 1:N users, but a Message is a 1:1
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// relationship. This method requires the mapping up front via options
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//
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if (isPrivate) {
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message.toUserName = options.toUser.username;
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message.meta.System[Message.SystemMetaNames.LocalToUserID] =
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options.toUser.userId;
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} else {
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message.toUser = 'All';
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}
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message.areaTag = options.areaTag || Message.WellKnownAreaTags.Private;
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// :TODO: it would be better to do some basic HTML to ANSI or pipe codes perhaps
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message.message = htmlToMessageBody(
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// try to handle various implementations
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// - https://docs.joinmastodon.org/spec/activitypub/#payloads
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// - https://indieweb.org/post-type-discovery#Algorithm
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this.content || this.name || this.summary
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);
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message.subject = this._getSubject(message);
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// List all attachments
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if (Array.isArray(this.attachment) && this.attachment.length > 0) {
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let attachmentInfoLines = ['--[Attachments]--'];
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// https://socialhub.activitypub.rocks/t/representing-images/624
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this.attachment.forEach(att => {
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const type = att.mediaType.substring(0, att.mediaType.indexOf('/'));
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switch (type) {
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case 'image':
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{
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let imgInfo;
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if (att.height && att.width) {
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imgInfo = `Image (${att.width}x${att.height})`;
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} else {
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imgInfo = 'Image';
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}
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attachmentInfoLines.push(imgInfo);
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}
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break;
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case 'audio':
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attachmentInfoLines.push('Audio');
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break;
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case 'video':
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attachmentInfoLines.push('Video');
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break;
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default:
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attachmentInfoLines.push(att.mediaType);
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}
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if (att.name) {
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attachmentInfoLines.push(att.name);
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}
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attachmentInfoLines.push(att.url);
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attachmentInfoLines.push('');
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attachmentInfoLines.push('');
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});
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message.message += '\r\n\r\n' + attachmentInfoLines.join('\r\n');
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}
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// If the Note is marked sensitive, prefix the subject
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if (this.sensitive && message.subject.indexOf('[NSFW]') === -1) {
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message.subject = `[NSFW] ${message.subject}`;
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}
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message.modTimestamp = parseTimestampOrNow(this.published);
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message.setRemoteFromUser(this.attributedTo);
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message.setExternalFlavor(Message.AddressFlavor.ActivityPub);
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message.meta.ActivityPub = message.meta.ActivityPub || {};
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message.meta.ActivityPub[Message.ActivityPubPropertyNames.ActivityId] =
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options.activityId || 0;
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message.meta.ActivityPub[Message.ActivityPubPropertyNames.NoteId] = this.id;
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if (this.inReplyTo) {
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message.meta.ActivityPub[Message.ActivityPubPropertyNames.InReplyTo] =
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this.inReplyTo;
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const filter = {
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resultType: 'id',
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metaTuples: [
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{
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category: Message.WellKnownMetaCategories.ActivityPub,
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name: Message.ActivityPubPropertyNames.InReplyTo,
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value: this.inReplyTo,
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},
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],
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limit: 1,
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};
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Message.findMessages(filter, (err, messageId) => {
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if (messageId) {
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// we get an array, but limited 1; use the first
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messageId = messageId[0];
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message.replyToMsgId = messageId;
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}
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return cb(null, message);
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});
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} else {
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return cb(null, message);
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}
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});
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}
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_getSubject(message) {
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if (this.summary) {
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return this.summary.trim();
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}
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if (this.name) {
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return this.name.trim();
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}
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//
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// Build a subject from the message itself:
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// - First few characters of the message, removing the @username
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// prefix, if any
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// - Truncate at the first line feed, the end of the message,
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// or 32 characters in length, whichever comes first
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// - If not end of string, we'll sub in '...'
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//
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let subject = message.message.replace(`@${message.toUserName} `, '').trim();
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const m = /^(.+)\r?\n/.exec(subject);
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if (m && m[1]) {
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subject = m[1];
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}
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subject = truncate(subject, { length: 32, omission: '...' });
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subject = subject || APDefaultSummary;
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return subject;
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}
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};
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