enigma-bbs/core/message_area.js

955 lines
33 KiB
JavaScript

/* jslint node: true */
'use strict';
// ENiGMA½
const msgDb = require('./database.js').dbs.message;
const Config = require('./config.js').get;
const Message = require('./message.js');
const Log = require('./logger.js').log;
const msgNetRecord = require('./msg_network.js').recordMessage;
const sortAreasOrConfs = require('./conf_area_util.js').sortAreasOrConfs;
const UserProps = require('./user_property.js');
const StatLog = require('./stat_log.js');
const SysProps = require('./system_property.js');
const {
SystemInternalConfTags,
WellKnownConfTags,
WellKnownAreaTags,
} = require('./message_const');
const Collection = require('./activitypub/collection');
const { Collections } = require('./activitypub/const');
// deps
const async = require('async');
const _ = require('lodash');
const assert = require('assert');
const moment = require('moment');
exports.startup = startup;
exports.shutdown = shutdown;
exports.getAvailableMessageConferences = getAvailableMessageConferences;
exports.getSortedAvailMessageConferences = getSortedAvailMessageConferences;
exports.getAvailableMessageAreasByConfTag = getAvailableMessageAreasByConfTag;
exports.getSortedAvailMessageAreasByConfTag = getSortedAvailMessageAreasByConfTag;
exports.getAllAvailableMessageAreaTags = getAllAvailableMessageAreaTags;
exports.getDefaultMessageConferenceTag = getDefaultMessageConferenceTag;
exports.getDefaultMessageAreaTagByConfTag = getDefaultMessageAreaTagByConfTag;
exports.getSuitableMessageConfAndAreaTags = getSuitableMessageConfAndAreaTags;
exports.getMessageConferenceByTag = getMessageConferenceByTag;
exports.getMessageAreaByTag = getMessageAreaByTag;
exports.getMessageConfTagByAreaTag = getMessageConfTagByAreaTag;
exports.changeMessageConference = changeMessageConference;
exports.changeMessageArea = changeMessageArea;
exports.hasMessageConfAndAreaRead = hasMessageConfAndAreaRead;
exports.hasMessageConfAndAreaWrite = hasMessageConfAndAreaWrite;
exports.filterMessageAreaTagsByReadACS = filterMessageAreaTagsByReadACS;
exports.filterMessageListByReadACS = filterMessageListByReadACS;
exports.tempChangeMessageConfAndArea = tempChangeMessageConfAndArea;
exports.getMessageListForArea = getMessageListForArea;
exports.getNewMessageCountInAreaForUser = getNewMessageCountInAreaForUser;
exports.getNewMessageCountAddressedToUser = getNewMessageCountAddressedToUser;
exports.getNewMessagesInAreaForUser = getNewMessagesInAreaForUser;
exports.getMessageIdNewerThanTimestampByArea = getMessageIdNewerThanTimestampByArea;
exports.getMessageAreaLastReadId = getMessageAreaLastReadId;
exports.updateMessageAreaLastReadId = updateMessageAreaLastReadId;
exports.persistMessage = persistMessage;
exports.trimMessageAreasScheduledEvent = trimMessageAreasScheduledEvent;
function startup(cb) {
// by default, private messages are NOT included
async.series(
[
callback => {
Message.findMessages({ resultType: 'count' }, (err, count) => {
if (count) {
StatLog.setNonPersistentSystemStat(
SysProps.MessageTotalCount,
count
);
}
return callback(err);
});
},
callback => {
Message.findMessages(
{ resultType: 'count', date: moment() },
(err, count) => {
if (count) {
StatLog.setNonPersistentSystemStat(
SysProps.MessagesToday,
count
);
}
return callback(err);
}
);
},
],
err => {
return cb(err);
}
);
}
function shutdown(cb) {
return cb(null);
}
function getAvailableMessageConferences(client, options) {
options = options || { includeSystemInternal: false };
assert(client || true === options.noClient);
// perform ACS check per conf & omit "System Internal" if desired
return _.omitBy(Config().messageConferences, (conf, confTag) => {
if (!options.includeSystemInternal && SystemInternalConfTags.includes(confTag)) {
return true;
}
return client && !client.acs.hasMessageConfRead(conf);
});
}
function getSortedAvailMessageConferences(client, options) {
const confs = _.map(getAvailableMessageConferences(client, options), (v, k) => {
return {
confTag: k,
conf: v,
};
});
sortAreasOrConfs(confs, 'conf');
return confs;
}
// Return an *object* of available areas within |confTag|
function getAvailableMessageAreasByConfTag(confTag, options) {
options = options || {};
// :TODO: confTag === "" then find default
const config = Config();
if (_.has(config.messageConferences, [confTag, 'areas'])) {
const areas = config.messageConferences[confTag].areas;
if (!options.client || true === options.noAcsCheck) {
// everything - no ACS checks
return areas;
} else {
// perform ACS check per area
return _.omitBy(areas, area => {
return !options.client.acs.hasMessageAreaRead(area);
});
}
}
}
function getSortedAvailMessageAreasByConfTag(confTag, options) {
const areas = _.map(getAvailableMessageAreasByConfTag(confTag, options), (v, k) => {
return {
areaTag: k,
area: v,
};
});
sortAreasOrConfs(areas, 'area');
return areas;
}
function getAllAvailableMessageAreaTags(client, options) {
const areaTags = [];
// mask over older messy APIs for now
const confOpts = Object.assign({}, options, { noClient: client ? false : true });
const areaOpts = Object.assign({}, options, { client });
Object.keys(getAvailableMessageConferences(client, confOpts)).forEach(confTag => {
areaTags.push(
...Object.keys(getAvailableMessageAreasByConfTag(confTag, areaOpts))
);
});
return areaTags;
}
function getDefaultMessageConferenceTag(client, disableAcsCheck) {
//
// Find the first conference marked 'default'. If found,
// inspect |client| against *read* ACS using defaults if not
// specified.
//
// If the above fails, just go down the list until we get one
// that passes.
//
// It's possible that we end up with nothing here!
//
// Note that built in "System Internal" are always omitted here
//
const config = Config();
let defaultConf = _.findKey(config.messageConferences, o => o.default);
if (defaultConf) {
const conf = config.messageConferences[defaultConf];
if (true === disableAcsCheck || client.acs.hasMessageConfRead(conf)) {
return defaultConf;
}
}
// just use anything we can
defaultConf = _.findKey(config.messageConferences, (conf, confTag) => {
return (
!SystemInternalConfTags.includes(confTag) &&
(true === disableAcsCheck || client.acs.hasMessageConfRead(conf))
);
});
return defaultConf;
}
function getDefaultMessageAreaTagByConfTag(client, confTag, disableAcsCheck) {
//
// Similar to finding the default conference:
// Find the first entry marked 'default', if any. If found, check | client| against
// *read* ACS. If this fails, just find the first one we can that passes checks.
//
// It's possible that we end up with nothing!
//
confTag = confTag || getDefaultMessageConferenceTag(client);
const config = Config();
if (confTag && _.has(config.messageConferences, [confTag, 'areas'])) {
const areaPool = config.messageConferences[confTag].areas;
let defaultArea = _.findKey(areaPool, o => o.default);
if (defaultArea) {
const area = areaPool[defaultArea];
if (true === disableAcsCheck || client.acs.hasMessageAreaRead(area)) {
return defaultArea;
}
}
defaultArea = _.findKey(areaPool, (area, areaTag) => {
if (Message.isPrivateAreaTag(areaTag)) {
return false;
}
return true === disableAcsCheck || client.acs.hasMessageAreaRead(area);
});
return defaultArea;
}
}
function getSuitableMessageConfAndAreaTags(client) {
//
// Attempts to get a pair of suitable conf/area tags:
// * Where the client/user has proper ACS to both
// * Try to use defaults where possible
// * If default conf/area is not an option, use any
// that pass ACS.
// * Returns a tuple [confTag, areaTag]; areaTag
// and possibly confTag may both be set to '' if
// if we fail to find something.
//
let confTag = getDefaultMessageConferenceTag(client);
if (!confTag) {
return ['', '']; // can't have an area without a conf
}
let areaTag = getDefaultMessageAreaTagByConfTag(client, confTag);
if (!areaTag) {
// OK, perhaps *any* area in *any* conf?
_.forEach(Config().messageConferences, (conf, ct) => {
if (!client.acs.hasMessageConfRead(conf)) {
return;
}
_.forEach(conf.areas, (area, at) => {
if (
!_.includes(Message.WellKnownAreaTags, at) &&
client.acs.hasMessageAreaRead(area)
) {
confTag = ct;
areaTag = at;
return false; // stop inner iteration
}
});
if (areaTag) {
return false; // stop iteration
}
});
}
return [confTag, areaTag || ''];
}
function getMessageConferenceByTag(confTag) {
return Object.assign({ confTag }, Config().messageConferences[confTag]);
}
function getMessageConfTagByAreaTag(areaTag) {
const confs = Config().messageConferences;
return Object.keys(confs).find(confTag => {
return _.has(confs, [confTag, 'areas', areaTag]);
});
}
function getMessageAreaByTag(areaTag, optionalConfTag) {
const confs = Config().messageConferences;
// :TODO: this could be cached
if (_.isString(optionalConfTag)) {
if (_.has(confs, [optionalConfTag, 'areas', areaTag])) {
return Object.assign(
{
areaTag,
confTag: optionalConfTag,
},
confs[optionalConfTag].areas[areaTag]
);
}
} else {
//
// No confTag to work with - we'll have to search through them all
//
let area;
_.forEach(confs, (conf, confTag) => {
if (_.has(conf, ['areas', areaTag])) {
area = Object.assign({ areaTag, confTag }, conf.areas[areaTag]);
return false; // stop iteration
}
});
return area;
}
}
function changeMessageConference(client, confTag, cb) {
async.waterfall(
[
function getConf(callback) {
const conf = getMessageConferenceByTag(confTag);
if (conf) {
callback(null, conf);
} else {
callback(new Error('Invalid message conference tag'));
}
},
function getDefaultAreaInConf(conf, callback) {
const areaTag = getDefaultMessageAreaTagByConfTag(client, confTag);
const area = getMessageAreaByTag(areaTag, confTag);
if (area) {
callback(null, conf, { areaTag: areaTag, area: area });
} else {
callback(new Error('No available areas for this user in conference'));
}
},
function validateAccess(conf, areaInfo, callback) {
if (
!client.acs.hasMessageConfRead(conf) ||
!client.acs.hasMessageAreaRead(areaInfo.area)
) {
return callback(
new Error('Access denied to message area and/or conference')
);
} else {
return callback(null, conf, areaInfo);
}
},
function changeConferenceAndArea(conf, areaInfo, callback) {
const newProps = {
[UserProps.MessageConfTag]: confTag,
[UserProps.MessageAreaTag]: areaInfo.areaTag,
};
client.user.persistProperties(newProps, err => {
callback(err, conf, areaInfo);
});
},
],
function complete(err, conf, areaInfo) {
if (!err) {
client.log.info(
{ confTag: confTag, confName: conf.name, areaTag: areaInfo.areaTag },
`${client.node} changed message conference to ${areaInfo.areaTag}`
);
} else {
client.log.warn(
{ confTag: confTag, error: err.message },
'Could not change message conference'
);
}
cb(err);
}
);
}
function changeMessageAreaWithOptions(client, areaTag, options, cb) {
options = options || {}; // :TODO: this is currently pointless... cb is required...
async.waterfall(
[
function getArea(callback) {
const area = getMessageAreaByTag(areaTag);
return callback(area ? null : new Error('Invalid message areaTag'), area);
},
function validateAccess(area, callback) {
//
// Need at least *read* to access the area
//
if (!client.acs.hasMessageAreaRead(area)) {
return callback(new Error('Access denied to message area'));
} else {
return callback(null, area);
}
},
function changeArea(area, callback) {
if (true === options.persist) {
client.user.persistProperty(
UserProps.MessageAreaTag,
areaTag,
function persisted(err) {
return callback(err, area);
}
);
} else {
client.user.properties[UserProps.MessageAreaTag] = areaTag;
return callback(null, area);
}
},
],
function complete(err, area) {
if (!err) {
client.log.debug(
{ areaTag: areaTag, area: area },
`Node ${client.node} changed message area to ${areaTag}`
);
} else {
client.log.warn(
{ areaTag: areaTag, area: area, error: err.message },
'Could not change message area'
);
}
return cb(err);
}
);
}
//
// Temporairly -- e.g. non-persisted -- change to an area and it's
// associated underlying conference. ACS is checked for both.
//
// This is useful for example when doing a new scan
//
function tempChangeMessageConfAndArea(client, areaTag) {
const area = getMessageAreaByTag(areaTag);
const confTag = getMessageConfTagByAreaTag(areaTag);
if (!area || !confTag) {
return false;
}
const conf = getMessageConferenceByTag(confTag);
if (!client.acs.hasMessageConfRead(conf) || !client.acs.hasMessageAreaRead(area)) {
return false;
}
client.user.properties[UserProps.MessageConfTag] = confTag;
client.user.properties[UserProps.MessageAreaTag] = areaTag;
return true;
}
function changeMessageArea(client, areaTag, cb) {
changeMessageAreaWithOptions(client, areaTag, { persist: true }, cb);
}
function hasMessageConfAndAreaRead(client, areaOrTag) {
if (_.isString(areaOrTag)) {
areaOrTag = getMessageAreaByTag(areaOrTag) || {};
}
const conf = getMessageConferenceByTag(areaOrTag.confTag);
return (
client.acs.hasMessageConfRead(conf) && client.acs.hasMessageAreaRead(areaOrTag)
);
}
function hasMessageConfAndAreaWrite(client, areaOrTag) {
if (_.isString(areaOrTag)) {
areaOrTag = getMessageAreaByTag(areaOrTag) || {};
}
const conf = getMessageConferenceByTag(areaOrTag.confTag);
return (
client.acs.hasMessageConfWrite(conf) && client.acs.hasMessageAreaWrite(areaOrTag)
);
}
function filterMessageAreaTagsByReadACS(client, areaTags) {
if (!Array.isArray(areaTags)) {
areaTags = [areaTags];
}
return areaTags.filter(areaTag => {
const area = getMessageAreaByTag(areaTag);
return hasMessageConfAndAreaRead(client, area);
});
}
function filterMessageListByReadACS(client, messageList) {
//
// Filter out messages belonging to conf/areas the user
// doesn't have access to.
//
// Keep a cache around for quick lookup.
const acsCache = new Map(); // areaTag:boolean
return messageList.filter(msg => {
let cached = acsCache.get(msg.areaTag);
if (false === cached) {
return false;
}
if (true === cached) {
return true;
}
cached = hasMessageConfAndAreaRead(client, msg.areaTag);
acsCache.set(msg.areaTag, cached);
return cached;
});
}
function getNewMessageCountInAreaForUser(userId, areaTag, cb) {
getMessageAreaLastReadId(userId, areaTag, (err, lastMessageId) => {
lastMessageId = lastMessageId || 0;
const filter = {
areaTag,
newerThanMessageId: lastMessageId,
resultType: 'count',
};
if (Message.isPrivateAreaTag(areaTag)) {
filter.privateTagUserId = userId;
}
Message.findMessages(filter, (err, count) => {
return cb(err, count);
});
});
}
// New message count -- for all areas available to the user
// that are addressed to that user (ie: matching username)
// Does NOT Include private messages.
function getNewMessageCountAddressedToUser(client, cb) {
const areaTags = getAllAvailableMessageAreaTags(client).filter(
areaTag => areaTag !== Message.WellKnownAreaTags.Private
);
let newMessageCount = 0;
async.forEach(
areaTags,
(areaTag, nextAreaTag) => {
getMessageAreaLastReadId(client.user.userId, areaTag, (_, lastMessageId) => {
lastMessageId = lastMessageId || 0; // eslint-disable-line no-unused-vars
getNewMessageCountInAreaForUser(
client.user.userId,
areaTag,
(err, count) => {
newMessageCount += count;
return nextAreaTag(err);
}
);
});
},
() => {
return cb(null, newMessageCount);
}
);
}
function getNewMessagesInAreaForUser(userId, areaTag, cb) {
getMessageAreaLastReadId(userId, areaTag, (err, lastMessageId) => {
lastMessageId = lastMessageId || 0;
const filter = {
areaTag,
resultType: 'messageList',
newerThanMessageId: lastMessageId,
sort: 'messageId',
order: 'ascending',
};
if (Message.isPrivateAreaTag(areaTag)) {
filter.privateTagUserId = userId;
}
return Message.findMessages(filter, cb);
});
}
function getMessageListForArea(client, areaTag, filter, cb) {
if (!cb && _.isFunction(filter)) {
cb = filter;
filter = {
areaTag,
resultType: 'messageList',
sort: 'messageId',
order: 'ascending',
};
} else {
Object.assign(filter, { areaTag });
}
if (client) {
if (!hasMessageConfAndAreaRead(client, areaTag)) {
return cb(null, []);
}
}
if (Message.isPrivateAreaTag(areaTag)) {
filter.privateTagUserId = client ? client.user.userId : 'INVALID_USER_ID';
}
return Message.findMessages(filter, cb);
}
function getMessageIdNewerThanTimestampByArea(areaTag, newerThanTimestamp, cb) {
Message.findMessages(
{
areaTag,
newerThanTimestamp,
sort: 'modTimestamp',
order: 'ascending',
limit: 1,
},
(err, id) => {
if (err) {
return cb(err);
}
return cb(null, id ? id[0] : null);
}
);
}
function getMessageAreaLastReadId(userId, areaTag, cb) {
msgDb.get(
'SELECT message_id ' +
'FROM user_message_area_last_read ' +
'WHERE user_id = ? AND area_tag = ?;',
[userId, areaTag.toLowerCase()],
function complete(err, row) {
cb(err, row ? row.message_id : 0);
}
);
}
function updateMessageAreaLastReadId(userId, areaTag, messageId, allowOlder, cb) {
if (!cb && _.isFunction(allowOlder)) {
cb = allowOlder;
allowOlder = false;
}
// :TODO: likely a better way to do this...
async.waterfall(
[
function getCurrent(callback) {
getMessageAreaLastReadId(userId, areaTag, function result(err, lastId) {
lastId = lastId || 0;
callback(null, lastId); // ignore errors as we default to 0
});
},
function update(lastId, callback) {
if (allowOlder || messageId > lastId) {
msgDb.run(
'REPLACE INTO user_message_area_last_read (user_id, area_tag, message_id) ' +
'VALUES (?, ?, ?);',
[userId, areaTag, messageId],
function written(err) {
callback(err, true); // true=didUpdate
}
);
} else {
callback(null);
}
},
],
function complete(err, didUpdate) {
if (err) {
Log.debug(
{
error: err.toString(),
userId: userId,
areaTag: areaTag,
messageId: messageId,
},
'Failed updating area last read ID'
);
} else {
if (true === didUpdate) {
Log.trace(
{ userId: userId, areaTag: areaTag, messageId: messageId },
'Area last read ID updated'
);
}
}
cb(err);
}
);
}
function persistMessage(message, cb) {
async.series(
[
function persistMessageToDisc(callback) {
return message.persist(callback);
},
function recordToMessageNetworks(callback) {
return msgNetRecord(message, callback);
},
],
cb
);
}
// method exposed for event scheduler
function trimMessageAreasScheduledEvent(args, cb) {
function trimMessageAreaByMaxMessages(areaInfo, cb) {
if (0 === areaInfo.maxMessages) {
return cb(null);
}
msgDb.run(
`DELETE FROM message
WHERE message_id IN(
SELECT message_id
FROM message
WHERE area_tag = ?
ORDER BY message_id DESC
LIMIT -1 OFFSET ${areaInfo.maxMessages}
);`,
[areaInfo.areaTag.toLowerCase()],
function result(err) {
// no arrow func; need this
if (err) {
Log.error(
{ areaInfo: areaInfo, error: err.message, type: 'maxMessages' },
'Error trimming message area'
);
} else {
Log.debug(
{ areaInfo: areaInfo, type: 'maxMessages', count: this.changes },
'Area trimmed successfully'
);
}
return cb(err);
}
);
}
function trimMessageAreaByMaxAgeDays(areaInfo, cb) {
if (0 === areaInfo.maxAgeDays) {
return cb(null);
}
msgDb.run(
`DELETE FROM message
WHERE area_tag = ? AND modified_timestamp < date('now', '-${areaInfo.maxAgeDays} days');`,
[areaInfo.areaTag],
function result(err) {
// no arrow func; need this
if (err) {
Log.warn(
{ areaInfo: areaInfo, error: err.message, type: 'maxAgeDays' },
'Error trimming message area'
);
} else {
Log.debug(
{ areaInfo: areaInfo, type: 'maxAgeDays', count: this.changes },
'Area trimmed successfully'
);
}
return cb(err);
}
);
}
async.waterfall(
[
function getAreaTags(callback) {
const areaTags = [];
//
// We use SQL here vs API such that no-longer-used tags are picked up
//
msgDb.each(
`SELECT DISTINCT area_tag
FROM message;`,
(err, row) => {
if (err) {
return callback(err);
}
// We treat private mail special
if (!Message.isPrivateAreaTag(row.area_tag)) {
areaTags.push(row.area_tag);
}
},
err => {
return callback(err, areaTags);
}
);
},
function prepareAreaInfo(areaTags, callback) {
let areaInfos = [];
// determine maxMessages & maxAgeDays per area
const config = Config();
areaTags.forEach(areaTag => {
let maxMessages = config.messageAreaDefaults.maxMessages;
let maxAgeDays = config.messageAreaDefaults.maxAgeDays;
const area = getMessageAreaByTag(areaTag); // note: we don't know the conf here
if (area) {
maxMessages = area.maxMessages || maxMessages;
maxAgeDays = area.maxAgeDays || maxAgeDays;
}
areaInfos.push({
areaTag: areaTag,
maxMessages: maxMessages,
maxAgeDays: maxAgeDays,
});
});
return callback(null, areaInfos);
},
function trimGeneralAreas(areaInfos, callback) {
const cbWrap = (e, t, c) => {
if (e) {
Log.warn({ error: e.message, type: t }, `Failed trimming (${t})`);
}
return c(null);
};
const ApSharedAreaTag = Message.WellKnownAreaTags.ActivityPubShared;
// Clean up messages, and any associated ActivityPub 'SharedInbox'
// Notes (ie: the source of said messages)
async.each(
areaInfos,
(areaInfo, nextArea) => {
async.series(
[
next => {
trimMessageAreaByMaxMessages(areaInfo, err => {
return cbWrap(err, 'Messages:MaxCount', next);
});
},
next => {
if (areaInfo.areaTag !== ApSharedAreaTag) {
return next(null);
}
Collection.removeByMaxCount(
Collections.SharedInbox,
areaInfo.maxMessages,
err => {
return cbWrap(
err,
'ActivityPubShared:MaxCount',
next
);
}
);
},
next => {
trimMessageAreaByMaxAgeDays(areaInfo, err => {
return cbWrap(err, 'Messages:MaxAgeDays', next);
});
},
next => {
if (areaInfo.areaTag !== ApSharedAreaTag) {
return next(null);
}
Collection.removeByMaxAgeDays(
Collections.SharedInbox,
areaInfo.maxAgeDays,
err => {
return cbWrap(
err,
'ActivityPubShared:MaxAgeDays',
next
);
}
);
},
],
err => {
return nextArea(err);
}
);
},
callback
);
},
function trimExternalPrivateSentMail(callback) {
//
// *External* (FTN, email, ...) outgoing is cleaned up *after export*
// if it is older than the configured |maxExternalSentAgeDays| days
//
// Outgoing externally exported private mail is:
// - In the 'private_mail' area
// - Marked exported (state_flags0 exported bit set)
// - Marked with any external flavor (we don't mark local)
//
const maxExternalSentAgeDays = _.get(
Config,
[
'messageConferences',
WellKnownConfTags.SystemInternal,
'areas',
WellKnownAreaTags.Private,
'maxExternalSentAgeDays',
],
30
);
msgDb.run(
`DELETE FROM message
WHERE message_id IN (
SELECT m.message_id
FROM message m
JOIN message_meta mms
ON m.message_id = mms.message_id AND
(mms.meta_category='System' AND mms.meta_name='${Message.SystemMetaNames.StateFlags0}' AND (mms.meta_value & ${Message.StateFlags0.Exported} = ${Message.StateFlags0.Exported}))
JOIN message_meta mmf
ON m.message_id = mmf.message_id AND
(mmf.meta_category='System' AND mmf.meta_name='${Message.SystemMetaNames.ExternalFlavor}')
WHERE m.area_tag='${Message.WellKnownAreaTags.Private}' AND DATETIME('now') > DATETIME(m.modified_timestamp, '+${maxExternalSentAgeDays} days')
);`,
function results(err) {
// no arrow func; need this
if (err) {
Log.warn(
{ error: err.message },
'Error trimming private externally sent messages'
);
} else {
Log.debug(
{ count: this.changes },
'Private externally sent messages trimmed successfully'
);
}
}
);
return callback(null);
},
],
err => {
return cb(err);
}
);
}