bigbluebutton-Github/bigbluebutton-html5/imports/api/group-chat-msg/server/methods/sendGroupChatMsg.js

import { Meteor } from 'meteor/meteor';
import { check } from 'meteor/check';
import RedisPubSub from '/imports/startup/server/redis';
import RegexWebUrl from '/imports/utils/regex-weburl';

const HTML_SAFE_MAP = {
  '<': '&lt;',
  '>': '&gt;',
  '"': '&quot;',
  "'": '&#39;',
};

const parseMessage = (message) => {
  let parsedMessage = message || '';
  parsedMessage = parsedMessage.trim();

  // Replace <br/> with \n\r
  parsedMessage = parsedMessage.replace(/<br\s*[\\/]?>/gi, '\n\r');

  // Sanitize. See: http://shebang.brandonmintern.com/foolproof-html-escaping-in-javascript/
  parsedMessage = parsedMessage.replace(/[<>'"]/g, c => HTML_SAFE_MAP[c]);

  // Replace flash links to flash valid ones
  parsedMessage = parsedMessage.replace(RegexWebUrl, "<a href='event:$&'><u>$&</u></a>");

  return parsedMessage;
};

export default function sendGroupChatMsg(credentials, chatId, message) {
  const REDIS_CONFIG = Meteor.settings.private.redis;
  const CHANNEL = REDIS_CONFIG.channels.toAkkaApps;
  const EVENT_NAME = 'SendGroupChatMessageMsg';

  const { meetingId, requesterUserId, requesterToken } = credentials;

  check(meetingId, String);
  check(requesterUserId, String);
  check(requesterToken, String);
  check(message, Object);

  const parsedMessage = parseMessage(message.message);

  message.message = parsedMessage;

  const payload = {
    msg: message,
    chatId,
  };

  return RedisPubSub.publishUserMessage(CHANNEL, EVENT_NAME, meetingId, requesterUserId, payload);
}