677 lines
24 KiB
JavaScript
677 lines
24 KiB
JavaScript
define([
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'jquery',
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'/bower_components/chainpad-crypto/crypto.js',
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'/common/curve.js',
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'/common/common-hash.js',
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], function ($, Crypto, Curve, Hash) {
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'use strict';
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var Msg = {
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inputs: [],
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};
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var Types = {
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message: 'MSG',
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update: 'UPDATE',
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unfriend: 'UNFRIEND',
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mapId: 'MAP_ID',
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mapIdAck: 'MAP_ID_ACK'
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};
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var clone = function (o) {
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return JSON.parse(JSON.stringify(o));
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};
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// TODO
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// - mute a channel (hide notifications or don't open it?)
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var createData = Msg.createData = function (proxy, hash) {
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return {
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channel: hash || Hash.createChannelId(),
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displayName: proxy['cryptpad.username'],
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profile: proxy.profile && proxy.profile.view,
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edPublic: proxy.edPublic,
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curvePublic: proxy.curvePublic,
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avatar: proxy.profile && proxy.profile.avatar
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};
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};
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var getFriend = function (proxy, pubkey) {
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if (pubkey === proxy.curvePublic) {
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var data = createData(proxy);
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delete data.channel;
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return data;
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}
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return proxy.friends ? proxy.friends[pubkey] : undefined;
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};
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var getFriendList = Msg.getFriendList = function (proxy) {
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if (!proxy.friends) { proxy.friends = {}; }
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return proxy.friends;
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};
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var eachFriend = function (friends, cb) {
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Object.keys(friends).forEach(function (id) {
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if (id === 'me') { return; }
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cb(friends[id], id, friends);
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});
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};
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Msg.getFriendChannelsList = function (proxy) {
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var list = [];
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eachFriend(proxy, function (friend) {
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list.push(friend.channel);
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});
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return list;
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};
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var msgAlreadyKnown = function (channel, sig) {
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return channel.messages.some(function (message) {
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return message[0] === sig;
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});
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};
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Msg.messenger = function (common) {
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var messenger = {
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handlers: {
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message: [],
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join: [],
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leave: [],
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update: [],
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friend: [],
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unfriend: [],
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},
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range_requests: {},
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};
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var eachHandler = function (type, g) {
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messenger.handlers[type].forEach(g);
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};
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messenger.on = function (type, f) {
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var stack = messenger.handlers[type];
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if (!Array.isArray(stack)) {
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return void console.error('unsupported message type');
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}
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if (typeof(f) !== 'function') {
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return void console.error('expected function');
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}
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stack.push(f);
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};
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var channels = messenger.channels = {};
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var joining = {};
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// declare common variables
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var network = common.getNetwork();
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var proxy = common.getProxy();
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var realtime = common.getRealtime();
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Msg.hk = network.historyKeeper;
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var friends = getFriendList(proxy);
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var getChannel = function (curvePublic) {
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var friend = friends[curvePublic];
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if (!friend) { return; }
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var chanId = friend.channel;
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if (!chanId) { return; }
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return channels[chanId];
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};
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var initRangeRequest = function (txid, curvePublic, sig, cb) {
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messenger.range_requests[txid] = {
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messages: [],
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cb: cb,
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curvePublic: curvePublic,
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sig: sig,
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};
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};
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var getRangeRequest = function (txid) {
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return messenger.range_requests[txid];
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};
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var deleteRangeRequest = function (txid) {
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delete messenger.range_requests[txid];
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};
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messenger.getMoreHistory = function (curvePublic, hash, count, cb) {
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if (typeof(cb) !== 'function') { return; }
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if (typeof(hash) !== 'string') {
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// FIXME hash is not necessarily defined.
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// What does this mean?
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console.error("not sure what to do here");
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return;
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}
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var chan = getChannel(curvePublic);
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if (typeof(chan) === 'undefined') {
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console.error("chan is undefined. we're going to have a problem here");
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return;
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}
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var txid = common.uid();
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initRangeRequest(txid, curvePublic, hash, cb);
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var msg = [ 'GET_HISTORY_RANGE', chan.id, {
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from: hash,
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count: count,
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txid: txid,
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}
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];
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network.sendto(network.historyKeeper, JSON.stringify(msg)).then(function () {
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}, function (err) {
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throw new Error(err);
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});
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};
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var getCurveForChannel = function (id) {
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var channel = channels[id];
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if (!channel) { return; }
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return channel.curve;
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};
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messenger.getChannelHead = function (curvePublic, cb) {
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var friend = friends[curvePublic];
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if (!friend) { return void cb('NO_SUCH_FRIEND'); }
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cb(void 0, friend.lastKnownHash);
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};
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messenger.setChannelHead = function (curvePublic, hash, cb) {
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var friend = friends[curvePublic];
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if (!friend) { return void cb('NO_SUCH_FRIEND'); }
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friend.lastKnownHash = hash;
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cb();
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};
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// Id message allows us to map a netfluxId with a public curve key
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var onIdMessage = function (msg, sender) {
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var channel;
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var isId = Object.keys(channels).some(function (chanId) {
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if (channels[chanId].userList.indexOf(sender) !== -1) {
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channel = channels[chanId];
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return true;
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}
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});
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if (!isId) { return; }
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var decryptedMsg = channel.encryptor.decrypt(msg);
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if (decryptedMsg === null) {
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return void console.error("Failed to decrypt message");
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}
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if (!decryptedMsg) {
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console.error('decrypted message was falsey but not null');
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return;
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}
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var parsed;
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try {
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parsed = JSON.parse(decryptedMsg);
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} catch (e) {
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console.error(decryptedMsg);
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return;
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}
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if (parsed[0] !== Types.mapId && parsed[0] !== Types.mapIdAck) { return; }
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// check that the responding peer's encrypted netflux id matches
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// the sender field. This is to prevent replay attacks.
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if (parsed[2] !== sender || !parsed[1]) { return; }
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channel.mapId[sender] = parsed[1];
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eachHandler('join', function (f) {
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f(parsed[1], channel.id);
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});
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if (parsed[0] !== Types.mapId) { return; } // Don't send your key if it's already an ACK
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// Answer with your own key
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var rMsg = [Types.mapIdAck, proxy.curvePublic, channel.wc.myID];
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var rMsgStr = JSON.stringify(rMsg);
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var cryptMsg = channel.encryptor.encrypt(rMsgStr);
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network.sendto(sender, cryptMsg);
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};
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var orderMessages = function (curvePublic, new_messages /*, sig */) {
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var channel = getChannel(curvePublic);
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var messages = channel.messages;
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// TODO improve performance, guarantee correct ordering
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new_messages.reverse().forEach(function (msg) {
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messages.unshift(msg);
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});
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};
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var removeFromFriendList = function (curvePublic, cb) {
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if (!proxy.friends) { return; }
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var friends = proxy.friends;
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delete friends[curvePublic];
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common.whenRealtimeSyncs(realtime, cb);
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};
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var pushMsg = function (channel, cryptMsg) {
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var msg = channel.encryptor.decrypt(cryptMsg);
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var sig = cryptMsg.slice(0, 64);
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if (msgAlreadyKnown(channel, sig)) { return; }
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var parsedMsg = JSON.parse(msg);
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var curvePublic;
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if (parsedMsg[0] === Types.message) {
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// TODO validate messages here
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var res = {
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type: parsedMsg[0],
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sig: sig,
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author: parsedMsg[1],
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time: parsedMsg[2],
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text: parsedMsg[3],
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// this makes debugging a whole lot easier
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curve: getCurveForChannel(channel.id),
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};
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channel.messages.push(res);
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eachHandler('message', function (f) {
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f(res);
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});
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return true;
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}
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if (parsedMsg[0] === Types.update) {
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if (parsedMsg[1] === proxy.curvePublic) { return; }
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curvePublic = parsedMsg[1];
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var newdata = parsedMsg[3];
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var data = getFriend(proxy, parsedMsg[1]);
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var types = [];
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Object.keys(newdata).forEach(function (k) {
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if (data[k] !== newdata[k]) {
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types.push(k);
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data[k] = newdata[k];
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}
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});
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eachHandler('update', function (f) {
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f(clone(newdata), curvePublic);
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});
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return;
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}
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if (parsedMsg[0] === Types.unfriend) {
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curvePublic = parsedMsg[1];
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delete friends[curvePublic];
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removeFromFriendList(parsedMsg[1], function () {
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channel.wc.leave(Types.unfriend);
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eachHandler('unfriend', function (f) {
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f(curvePublic);
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});
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});
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return;
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}
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};
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/* Broadcast a display name, profile, or avatar change to all contacts
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*/
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// TODO send event...
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messenger.updateMyData = function () {
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var friends = getFriendList(proxy);
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var mySyncData = friends.me;
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var myData = createData(proxy);
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if (!mySyncData || mySyncData.displayName !== myData.displayName
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|| mySyncData.profile !== myData.profile
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|| mySyncData.avatar !== myData.avatar) {
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delete myData.channel;
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Object.keys(channels).forEach(function (chan) {
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var channel = channels[chan];
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if (!channel) {
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return void console.error('NO_SUCH_CHANNEL');
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}
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var msg = [Types.update, myData.curvePublic, +new Date(), myData];
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var msgStr = JSON.stringify(msg);
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var cryptMsg = channel.encryptor.encrypt(msgStr);
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channel.wc.bcast(cryptMsg).then(function () {
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// TODO send event
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//channel.refresh();
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}, function (err) {
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console.error(err);
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});
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});
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eachHandler('update', function (f) {
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f(myData, myData.curvePublic);
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});
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friends.me = myData;
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}
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};
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var onChannelReady = function (chanId) {
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var cb = joining[chanId];
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if (typeof(cb) !== 'function') {
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return void console.error('channel ready without callback');
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}
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delete joining[chanId];
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return cb();
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};
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var onDirectMessage = function (common, msg, sender) {
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if (sender !== Msg.hk) { return void onIdMessage(msg, sender); }
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var parsed = JSON.parse(msg);
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if (/HISTORY_RANGE/.test(parsed[0])) {
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//console.log(parsed);
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var txid = parsed[1];
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var req = getRangeRequest(txid);
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var type = parsed[0];
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if (!req) {
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return void console.error("received response to unknown request");
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}
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if (type === 'HISTORY_RANGE') {
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req.messages.push(parsed[2]);
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} else if (type === 'HISTORY_RANGE_END') {
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// process all the messages (decrypt)
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var curvePublic = req.curvePublic;
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var channel = getChannel(curvePublic);
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var decrypted = req.messages.map(function (msg) {
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if (msg[2] !== 'MSG') { return; }
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try {
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return {
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d: JSON.parse(channel.encryptor.decrypt(msg[4])),
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sig: msg[4].slice(0, 64),
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};
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} catch (e) {
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console.log('failed to decrypt');
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return null;
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}
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}).filter(function (decrypted) {
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return decrypted;
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}).map(function (O) {
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return {
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type: O.d[0],
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sig: O.sig,
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author: O.d[1],
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time: O.d[2],
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text: O.d[3],
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curve: curvePublic,
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};
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});
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orderMessages(curvePublic, decrypted, req.sig);
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req.cb(void 0, decrypted);
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return deleteRangeRequest(txid);
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} else {
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console.log(parsed);
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}
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return;
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}
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if ((parsed.validateKey || parsed.owners) && parsed.channel) {
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return;
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}
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if (parsed.state && parsed.state === 1 && parsed.channel) {
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if (channels[parsed.channel]) {
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// parsed.channel is Ready
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// channel[parsed.channel].ready();
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channels[parsed.channel].ready = true;
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onChannelReady(parsed.channel);
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var updateTypes = channels[parsed.channel].updateOnReady;
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if (updateTypes) {
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//channels[parsed.channel].updateUI(updateTypes);
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}
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}
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return;
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}
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var chan = parsed[3];
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if (!chan || !channels[chan]) { return; }
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pushMsg(channels[chan], parsed[4]);
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};
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var onMessage = function (msg, sender, chan) {
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if (!channels[chan.id]) { return; }
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var isMessage = pushMsg(channels[chan.id], msg);
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if (isMessage) {
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if (channels[chan.id].wc.myID !== sender) {
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// Don't notify for your own messages
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//channels[chan.id].notify();
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}
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//channels[chan.id].refresh();
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// TODO emit message event
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}
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};
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// listen for messages...
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network.on('message', function(msg, sender) {
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onDirectMessage(common, msg, sender);
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});
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messenger.removeFriend = function (curvePublic, cb) {
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if (typeof(cb) !== 'function') { throw new Error('NO_CALLBACK'); }
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var data = getFriend(proxy, curvePublic);
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if (!data) {
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// friend is not valid
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console.error('friend is not valid');
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return;
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}
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var channel = channels[data.channel];
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if (!channel) {
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return void cb("NO_SUCH_CHANNEL");
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}
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if (!network.webChannels.some(function (wc) {
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return wc.id === channel.id;
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})) {
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console.error('bad channel: ', curvePublic);
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}
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var msg = [Types.unfriend, proxy.curvePublic, +new Date()];
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var msgStr = JSON.stringify(msg);
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var cryptMsg = channel.encryptor.encrypt(msgStr);
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// TODO emit remove_friend event?
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try {
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channel.wc.bcast(cryptMsg).then(function () {
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delete friends[curvePublic];
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delete channels[curvePublic];
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common.whenRealtimeSyncs(realtime, function () {
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cb();
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});
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}, function (err) {
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console.error(err);
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cb(err);
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});
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} catch (e) {
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cb(e);
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}
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};
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var getChannelMessagesSince = function (chan, data, keys) {
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console.log('Fetching [%s] messages since [%s]', data.curvePublic, data.lastKnownHash || '');
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var cfg = {
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validateKey: keys.validateKey,
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owners: [proxy.edPublic, data.edPublic],
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lastKnownHash: data.lastKnownHash
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};
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var msg = ['GET_HISTORY', chan.id, cfg];
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network.sendto(network.historyKeeper, JSON.stringify(msg))
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.then($.noop, function (err) {
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throw new Error(err);
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});
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};
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var openFriendChannel = function (data, f) {
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var keys = Curve.deriveKeys(data.curvePublic, proxy.curvePrivate);
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var encryptor = Curve.createEncryptor(keys);
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network.join(data.channel).then(function (chan) {
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var channel = channels[data.channel] = {
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id: data.channel,
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sending: false,
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friendEd: f,
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keys: keys,
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curve: data.curvePublic,
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encryptor: encryptor,
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messages: [],
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wc: chan,
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userList: [],
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mapId: {},
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send: function (payload, cb) {
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if (!network.webChannels.some(function (wc) {
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if (wc.id === channel.wc.id) { return true; }
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})) {
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return void cb('NO_SUCH_CHANNEL');
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}
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var msg = [Types.message, proxy.curvePublic, +new Date(), payload];
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var msgStr = JSON.stringify(msg);
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var cryptMsg = channel.encryptor.encrypt(msgStr);
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channel.wc.bcast(cryptMsg).then(function () {
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pushMsg(channel, cryptMsg);
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cb();
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}, function (err) {
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cb(err);
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});
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}
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};
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chan.on('message', function (msg, sender) {
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onMessage(msg, sender, chan);
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});
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var onJoining = function (peer) {
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if (peer === Msg.hk) { return; }
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if (channel.userList.indexOf(peer) !== -1) { return; }
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channel.userList.push(peer);
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var msg = [Types.mapId, proxy.curvePublic, chan.myID];
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var msgStr = JSON.stringify(msg);
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var cryptMsg = channel.encryptor.encrypt(msgStr);
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network.sendto(peer, cryptMsg);
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};
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chan.members.forEach(function (peer) {
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if (peer === Msg.hk) { return; }
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if (channel.userList.indexOf(peer) !== -1) { return; }
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channel.userList.push(peer);
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});
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chan.on('join', onJoining);
|
||
chan.on('leave', function (peer) {
|
||
var curvePublic = channel.mapId[peer];
|
||
var i = channel.userList.indexOf(peer);
|
||
while (i !== -1) {
|
||
channel.userList.splice(i, 1);
|
||
i = channel.userList.indexOf(peer);
|
||
}
|
||
// update status
|
||
if (!curvePublic) { return; }
|
||
eachHandler('leave', function (f) {
|
||
f(curvePublic, channel.id);
|
||
});
|
||
});
|
||
|
||
// FIXME don't subscribe to the channel implicitly
|
||
getChannelMessagesSince(chan, data, keys);
|
||
}, function (err) {
|
||
console.error(err);
|
||
});
|
||
};
|
||
|
||
messenger.getFriendList = function (cb) {
|
||
var friends = proxy.friends;
|
||
if (!friends) { return void cb(void 0, []); }
|
||
|
||
cb(void 0, Object.keys(proxy.friends).filter(function (k) {
|
||
return k !== 'me';
|
||
}));
|
||
};
|
||
|
||
messenger.openFriendChannel = function (curvePublic, cb) {
|
||
if (typeof(curvePublic) !== 'string') { return void cb('INVALID_ID'); }
|
||
if (typeof(cb) !== 'function') { throw new Error('expected callback'); }
|
||
|
||
var friend = clone(friends[curvePublic]);
|
||
if (typeof(friend) !== 'object') {
|
||
return void cb('NO_FRIEND_DATA');
|
||
}
|
||
var channel = friend.channel;
|
||
if (!channel) { return void cb('E_NO_CHANNEL'); }
|
||
joining[channel] = cb;
|
||
openFriendChannel(friend, curvePublic);
|
||
};
|
||
|
||
messenger.sendMessage = function (curvePublic, payload, cb) {
|
||
var channel = getChannel(curvePublic);
|
||
if (!channel) { return void cb('NO_CHANNEL'); }
|
||
if (!network.webChannels.some(function (wc) {
|
||
if (wc.id === channel.wc.id) { return true; }
|
||
})) {
|
||
return void cb('NO_SUCH_CHANNEL');
|
||
}
|
||
|
||
var msg = [Types.message, proxy.curvePublic, +new Date(), payload];
|
||
var msgStr = JSON.stringify(msg);
|
||
var cryptMsg = channel.encryptor.encrypt(msgStr);
|
||
|
||
channel.wc.bcast(cryptMsg).then(function () {
|
||
pushMsg(channel, cryptMsg);
|
||
cb();
|
||
}, function (err) {
|
||
cb(err);
|
||
});
|
||
};
|
||
|
||
messenger.getStatus = function (curvePublic, cb) {
|
||
var channel = getChannel(curvePublic);
|
||
if (!channel) { return void cb('NO_SUCH_CHANNEL'); }
|
||
var online = channel.userList.some(function (nId) {
|
||
return channel.mapId[nId] === curvePublic;
|
||
});
|
||
cb(void 0, online);
|
||
};
|
||
|
||
messenger.getFriendInfo = function (curvePublic, cb) {
|
||
setTimeout(function () {
|
||
var friend = friends[curvePublic];
|
||
if (!friend) { return void cb('NO_SUCH_FRIEND'); }
|
||
// this clone will be redundant when ui uses postmessage
|
||
cb(void 0, clone(friend));
|
||
});
|
||
};
|
||
|
||
messenger.getMyInfo = function (cb) {
|
||
cb(void 0, {
|
||
curvePublic: proxy.curvePublic,
|
||
displayName: common.getDisplayName(),
|
||
});
|
||
};
|
||
|
||
// TODO listen for changes to your friend list
|
||
// emit 'update' events for clients
|
||
|
||
//var update = function (curvePublic
|
||
proxy.on('change', ['friends'], function (o, n, p) {
|
||
var curvePublic;
|
||
if (o === undefined) {
|
||
// new friend added
|
||
curvePublic = p.slice(-1)[0];
|
||
eachHandler('friend', function (f) {
|
||
f(curvePublic, clone(n));
|
||
});
|
||
return;
|
||
}
|
||
|
||
console.error(o, n, p);
|
||
}).on('remove', ['friends'], function (o, p) {
|
||
eachHandler('unfriend', function (f) {
|
||
f(p[1]); // TODO
|
||
});
|
||
});
|
||
|
||
Object.freeze(messenger);
|
||
|
||
return messenger;
|
||
};
|
||
|
||
return Msg;
|
||
});
|