bigbluebutton-Github/bigbluebutton-html5/imports/api/common/server/helpers.js

74 lines
2.1 KiB
JavaScript
Executable File

import Users from '/imports/api/users';
const MSG_DIRECT_TYPE = 'DIRECT';
const NODE_USER = 'nodeJSapp';
export const spokeTimeoutHandles = {};
export const clearSpokeTimeout = (meetingId, userId) => {
if (spokeTimeoutHandles[`${meetingId}-${userId}`]) {
Meteor.clearTimeout(spokeTimeoutHandles[`${meetingId}-${userId}`]);
delete spokeTimeoutHandles[`${meetingId}-${userId}`];
}
};
export const indexOf = [].indexOf || function (item) {
for (let i = 0, l = this.length; i < l; i += 1) {
if (i in this && this[i] === item) {
return i;
}
}
return -1;
};
export const processForHTML5ServerOnly = fn => (message, ...args) => {
const { envelope } = message;
const { routing } = envelope;
const { msgType, meetingId, userId } = routing;
const selector = {
userId,
meetingId,
};
const user = Users.findOne(selector);
const shouldSkip = user && msgType === MSG_DIRECT_TYPE && userId !== NODE_USER && user.clientType !== 'HTML5';
if (shouldSkip) return () => { };
return fn(message, ...args);
};
/**
* Calculate a 32 bit FNV-1a hash
* Found here: https://gist.github.com/vaiorabbit/5657561
* Ref.: http://isthe.com/chongo/tech/comp/fnv/
*
* @param {string} str the input value
* @param {boolean} [asString=false] set to true to return the hash value as
* 8-digit hex string instead of an integer
* @param {integer} [seed] optionally pass the hash of the previous chunk
* @returns {integer | string}
*/
/* eslint-disable */
export const hashFNV32a = (str, asString, seed) => {
let hval = (seed === undefined) ? 0x811c9dc5 : seed;
for (let i = 0, l = str.length; i < l; i++) {
hval ^= str.charCodeAt(i);
hval += (hval << 1) + (hval << 4) + (hval << 7) + (hval << 8) + (hval << 24);
}
if (asString) {
return (`0000000${(hval >>> 0).toString(16)}`).substr(-8);
}
return hval >>> 0;
};
/* eslint-enable */
export const extractCredentials = (credentials) => {
if (!credentials) return {};
const credentialsArray = credentials.split('--');
const meetingId = credentialsArray[0];
const requesterUserId = credentialsArray[1];
return { meetingId, requesterUserId };
};