mirror of
https://github.com/jech/galene.git
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958 lines
24 KiB
JavaScript
958 lines
24 KiB
JavaScript
// Copyright (c) 2020 by Juliusz Chroboczek.
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// This is not open source software. Copy it, and I'll break into your
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// house and tell your three year-old that Santa doesn't exist.
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'use strict';
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/** @type {string} */
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let group;
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/** @type {ServerConnection} */
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let serverConnection;
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function setUserPass(username, password) {
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window.sessionStorage.setItem(
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'userpass',
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JSON.stringify({username: username, password: password}),
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);
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}
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function getUserPass() {
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let userpass = window.sessionStorage.getItem('userpass');
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if(!userpass)
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return null;
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return JSON.parse(userpass);
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}
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function getUsername() {
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let userpass = getUserPass();
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if(!userpass)
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return null;
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return userpass.username;
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}
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function setConnected(connected) {
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let statspan = document.getElementById('statspan');
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let userform = document.getElementById('userform');
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let disconnectbutton = document.getElementById('disconnectbutton');
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if(connected) {
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clearError();
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resetUsers();
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clearChat();
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statspan.textContent = 'Connected';
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statspan.classList.remove('disconnected');
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statspan.classList.add('connected');
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userform.classList.add('invisible');
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userform.classList.remove('userform');
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disconnectbutton.classList.remove('invisible');
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displayUsername();
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} else {
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let userpass = getUserPass();
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document.getElementById('username').value =
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userpass ? userpass.username : '';
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document.getElementById('password').value =
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userpass ? userpass.password : '';
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statspan.textContent = 'Disconnected';
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statspan.classList.remove('connected');
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statspan.classList.add('disconnected');
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userform.classList.add('userform');
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userform.classList.remove('invisible');
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disconnectbutton.classList.add('invisible');
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clearUsername();
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}
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}
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function gotConnected() {
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setConnected(true);
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let up = getUserPass();
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this.login(up.username, up.password);
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this.join(group);
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this.request(document.getElementById('requestselect').value);
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}
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function gotClose(code, reason) {
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delUpMediaKind(null);
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setConnected(false);
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if(code != 1000)
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console.warn('Socket close', code, reason);
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}
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/**
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* @param {Stream} c
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*/
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function gotDownStream(c) {
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c.onclose = function() {
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delMedia(c.id);
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};
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c.onerror = function(e) {
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console.error(e);
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displayError(e);
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}
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c.ondowntrack = function(track, transceiver, label, stream) {
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setMedia(c, false);
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}
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c.onlabel = function(label) {
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setLabel(c);
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}
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c.onstatus = function(status) {
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setMediaStatus(c);
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}
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}
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document.getElementById('presentbutton').onclick = function(e) {
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e.preventDefault();
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addLocalMedia();
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};
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document.getElementById('unpresentbutton').onclick = function(e) {
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e.preventDefault();
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delUpMediaKind('local');
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};
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function changePresentation() {
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let id = findUpMedia('local');
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if(id) {
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addLocalMedia(id);
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}
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}
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/**
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* @param {string} id
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* @param {boolean} visible
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*/
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function setVisibility(id, visible) {
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let elt = document.getElementById(id);
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if(visible)
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elt.classList.remove('invisible');
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else
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elt.classList.add('invisible');
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}
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function setButtonsVisibility() {
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let permissions = serverConnection.permissions;
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let local = !!findUpMedia('local');
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let share = !!findUpMedia('screenshare')
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// don't allow multiple presentations
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setVisibility('presentbutton', permissions.present && !local);
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setVisibility('unpresentbutton', local);
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// allow multiple shared documents
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setVisibility('sharebutton', permissions.present);
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setVisibility('unsharebutton', share);
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setVisibility('mediaoptions', permissions.present);
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}
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let localMute = false;
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function toggleLocalMute() {
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setLocalMute(!localMute);
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}
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function setLocalMute(mute) {
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localMute = mute;
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muteLocalTracks(localMute);
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let button = document.getElementById('mutebutton');
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button.textContent = localMute ? 'Unmute' : 'Mute';
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if(localMute)
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button.classList.add('muted');
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else
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button.classList.remove('muted');
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}
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document.getElementById('videoselect').onchange = function(e) {
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e.preventDefault();
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changePresentation();
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};
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document.getElementById('audioselect').onchange = function(e) {
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e.preventDefault();
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changePresentation();
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};
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document.getElementById('mutebutton').onclick = function(e) {
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e.preventDefault();
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toggleLocalMute();
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}
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document.getElementById('sharebutton').onclick = function(e) {
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e.preventDefault();
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addShareMedia();
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};
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document.getElementById('unsharebutton').onclick = function(e) {
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e.preventDefault();
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delUpMediaKind('screenshare');
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}
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document.getElementById('requestselect').onchange = function(e) {
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e.preventDefault();
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serverConnection.request(this.value);
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};
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function displayStats(stats) {
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let c = this;
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let text = '';
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c.pc.getSenders().forEach(s => {
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let tid = s.track && s.track.id;
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let stats = tid && c.stats[tid];
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if(stats && stats.rate > 0) {
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if(text)
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text = text + ' + ';
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text = text + Math.round(stats.rate / 1000) + 'kbps';
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}
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});
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setLabel(c, text);
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}
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function mapMediaOption(value) {
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console.assert(typeof(value) === 'string');
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switch(value) {
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case 'default':
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return true;
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case 'off':
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return false;
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default:
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return {deviceId: value};
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}
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}
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function addSelectOption(select, label, value) {
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if(!value)
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value = label;
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for(let i = 0; i < select.children.length; i++) {
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if(select.children[i].value === value) {
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return;
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}
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}
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let option = document.createElement('option');
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option.value = value;
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option.textContent = label;
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select.appendChild(option);
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}
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// media names might not be available before we call getDisplayMedia. So
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// we call this lazily.
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let mediaChoicesDone = false;
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async function setMediaChoices() {
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if(mediaChoicesDone)
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return;
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let devices = [];
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try {
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devices = await navigator.mediaDevices.enumerateDevices();
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} catch(e) {
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console.error(e);
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return;
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}
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let cn = 1, mn = 1;
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devices.forEach(d => {
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let label = d.label;
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if(d.kind === 'videoinput') {
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if(!label)
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label = `Camera ${cn}`;
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addSelectOption(document.getElementById('videoselect'),
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label, d.deviceId);
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cn++;
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} else if(d.kind === 'audioinput') {
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if(!label)
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label = `Microphone ${mn}`;
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addSelectOption(document.getElementById('audioselect'),
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label, d.deviceId);
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mn++;
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}
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});
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mediaChoicesDone = true;
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}
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/**
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* @param {string} id
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*/
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function newUpStream(id) {
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let c = serverConnection.newUpStream(id);
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c.onstatus = function(status) {
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setMediaStatus(c);
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}
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c.onerror = function(e) {
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console.error(e);
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displayError(e);
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delUpMedia(c);
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}
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c.onabort = function() {
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delUpMedia(c);
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}
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return c;
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}
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/**
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* @param {string} [id]
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*/
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async function addLocalMedia(id) {
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if(!getUserPass())
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return;
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let audio = mapMediaOption(document.getElementById('audioselect').value);
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let video = mapMediaOption(document.getElementById('videoselect').value);
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let old = id && serverConnection.up[id];
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if(!audio && !video) {
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if(old)
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delUpMedia(old);
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return;
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}
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if(old)
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stopUpMedia(old);
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let constraints = {audio: audio, video: video};
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let stream = null;
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try {
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stream = await navigator.mediaDevices.getUserMedia(constraints);
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} catch(e) {
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console.error(e);
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if(old)
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delUpMedia(old);
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return;
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}
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setMediaChoices();
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let c = newUpStream(id);
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c.kind = 'local';
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c.stream = stream;
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stream.getTracks().forEach(t => {
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c.labels[t.id] = t.kind
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if(t.kind == 'audio' && localMute)
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t.enabled = false;
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let sender = c.pc.addTrack(t, stream);
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});
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c.onstats = displayStats;
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c.setStatsInterval(2000);
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await setMedia(c, true);
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setButtonsVisibility()
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}
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async function addShareMedia(setup) {
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if(!getUserPass())
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return;
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let stream = null;
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try {
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stream = await navigator.mediaDevices.getDisplayMedia({});
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} catch(e) {
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console.error(e);
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return;
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}
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let c = await serverConnection.newUpStream();
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c.kind = 'screenshare';
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c.stream = stream;
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stream.getTracks().forEach(t => {
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let sender = c.pc.addTrack(t, stream);
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t.onended = e => {
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delUpMedia(c);
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};
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c.labels[t.id] = 'screenshare';
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});
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c.onstats = displayStats;
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c.setStatsInterval(2000);
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await setMedia(c, true);
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setButtonsVisibility()
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}
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/**
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* @param {Stream} c
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*/
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function stopUpMedia(c) {
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if(!c.stream)
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return;
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c.stream.getTracks().forEach(t => {
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try {
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t.stop();
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} catch(e) {
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}
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});
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}
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/**
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* @param {Stream} c
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*/
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function delUpMedia(c) {
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stopUpMedia(c);
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try {
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delMedia(c.id);
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} catch(e) {
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console.warn(e);
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}
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c.close(true);
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delete(serverConnection.up[c.id]);
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setButtonsVisibility()
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}
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/**
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* delUpMediaKind reoves all up media of the given kind. If kind is
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* falseish, it removes all up media.
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* @param {string} kind
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*/
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function delUpMediaKind(kind) {
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for(let id in serverConnection.up) {
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let c = serverConnection.up[id];
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if(kind && c.kind != kind)
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continue
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c.close(true);
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delMedia(id);
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delete(serverConnection.up[id]);
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}
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setButtonsVisibility()
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}
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function findUpMedia(kind) {
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for(let id in serverConnection.up) {
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if(serverConnection.up[id].kind === kind)
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return id;
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}
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return null;
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}
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function muteLocalTracks(mute) {
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if(!serverConnection)
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return;
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for(let id in serverConnection.up) {
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let c = serverConnection.up[id];
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if(c.kind === 'local') {
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let stream = c.stream;
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stream.getTracks().forEach(t => {
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if(t.kind === 'audio') {
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t.enabled = !mute;
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}
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});
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}
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}
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}
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/**
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* @param {Stream} c
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* @param {boolean} isUp
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*/
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function setMedia(c, isUp) {
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let peersdiv = document.getElementById('peers');
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let div = document.getElementById('peer-' + c.id);
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if(!div) {
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div = document.createElement('div');
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div.id = 'peer-' + c.id;
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div.classList.add('peer');
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peersdiv.appendChild(div);
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}
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let media = document.getElementById('media-' + c.id);
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if(!media) {
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media = document.createElement('video');
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media.id = 'media-' + c.id;
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media.classList.add('media');
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media.autoplay = true;
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media.playsinline = true;
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media.controls = true;
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if(isUp)
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media.muted = true;
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div.appendChild(media);
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}
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let label = document.getElementById('label-' + c.id);
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if(!label) {
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label = document.createElement('div');
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label.id = 'label-' + c.id;
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label.classList.add('label');
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div.appendChild(label);
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}
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media.srcObject = c.stream;
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setLabel(c);
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setMediaStatus(c);
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resizePeers();
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}
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function delMedia(id) {
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let mediadiv = document.getElementById('peers');
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let peer = document.getElementById('peer-' + id);
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if(!peer)
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throw new Error('Removing unknown media');
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let media = document.getElementById('media-' + id);
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media.srcObject = null;
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mediadiv.removeChild(peer);
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resizePeers();
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}
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/**
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* @param {Stream} c
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*/
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function setMediaStatus(c) {
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let state = c && c.pc && c.pc.iceConnectionState;
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let good = state === 'connected' || state === 'completed';
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let media = document.getElementById('media-' + c.id);
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if(!media) {
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console.warn('Setting status of unknown media.');
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return;
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}
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if(good)
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media.classList.remove('media-failed');
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else
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media.classList.add('media-failed');
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}
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/**
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* @param {Stream} c
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* @param {string} [fallback]
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*/
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function setLabel(c, fallback) {
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let label = document.getElementById('label-' + c.id);
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if(!label)
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return;
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let l = c.label;
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if(l) {
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label.textContent = l;
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label.classList.remove('label-fallback');
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} else if(fallback) {
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label.textContent = fallback;
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label.classList.add('label-fallback');
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} else {
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label.textContent = '';
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label.classList.remove('label-fallback');
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}
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}
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function resizePeers() {
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let count =
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Object.keys(serverConnection.up).length +
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Object.keys(serverConnection.down).length;
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let columns = Math.ceil(Math.sqrt(count));
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document.getElementById('peers').style['grid-template-columns'] =
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`repeat(${columns}, 1fr)`;
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}
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let users = {};
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/**
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* @param {string} id
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* @param {string} name
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*/
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function addUser(id, name) {
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if(!name)
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name = null;
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if(id in users)
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throw new Error('Duplicate user id');
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users[id] = name;
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let div = document.getElementById('users');
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let user = document.createElement('div');
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user.id = 'user-' + id;
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user.textContent = name ? name : '(anon)';
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div.appendChild(user);
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}
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/**
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* @param {string} id
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* @param {string} name
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*/
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function delUser(id, name) {
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if(!name)
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name = null;
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if(!(id in users))
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throw new Error('Unknown user id');
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if(users[id] !== name)
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throw new Error('Inconsistent user name');
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delete(users[id]);
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let div = document.getElementById('users');
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let user = document.getElementById('user-' + id);
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div.removeChild(user);
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}
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function resetUsers() {
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for(let id in users)
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delUser(id, users[id]);
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}
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/**
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* @param {string} id
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* @param {string} kind
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* @param {string} name
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*/
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function gotUser(id, kind, name) {
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switch(kind) {
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case 'add':
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addUser(id, name);
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break;
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case 'delete':
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delUser(id, name);
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break;
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default:
|
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console.warn('Unknown user kind', kind);
|
|
break;
|
|
}
|
|
}
|
|
|
|
function displayUsername() {
|
|
let userpass = getUserPass();
|
|
let text = '';
|
|
if(userpass && userpass.username)
|
|
text = 'as ' + userpass.username;
|
|
if(serverConnection.permissions.op && serverConnection.permissions.present)
|
|
text = text + ' (op, presenter)';
|
|
else if(serverConnection.permissions.op)
|
|
text = text + ' (op)';
|
|
else if(serverConnection.permissions.present)
|
|
text = text + ' (presenter)';
|
|
document.getElementById('userspan').textContent = text;
|
|
}
|
|
|
|
function clearUsername() {
|
|
document.getElementById('userspan').textContent = '';
|
|
}
|
|
|
|
/**
|
|
* @param {Object.<string,boolean>} perms
|
|
*/
|
|
function gotPermissions(perms) {
|
|
displayUsername();
|
|
setButtonsVisibility();
|
|
}
|
|
|
|
const urlRegexp = /https?:\/\/[-a-zA-Z0-9@:%/._\\+~#=?]+[-a-zA-Z0-9@:%/_\\+~#=]/g;
|
|
|
|
function formatLine(line) {
|
|
let r = new RegExp(urlRegexp);
|
|
let result = [];
|
|
let pos = 0;
|
|
while(true) {
|
|
let m = r.exec(line);
|
|
if(!m)
|
|
break;
|
|
result.push(document.createTextNode(line.slice(pos, m.index)));
|
|
let a = document.createElement('a');
|
|
a.href = m[0];
|
|
a.textContent = m[0];
|
|
a.target = '_blank';
|
|
a.rel = 'noreferrer noopener';
|
|
result.push(a);
|
|
pos = m.index + m[0].length;
|
|
}
|
|
result.push(document.createTextNode(line.slice(pos)));
|
|
return result;
|
|
}
|
|
|
|
function formatLines(lines) {
|
|
let elts = [];
|
|
if(lines.length > 0)
|
|
elts = formatLine(lines[0]);
|
|
for(let i = 1; i < lines.length; i++) {
|
|
elts.push(document.createElement('br'));
|
|
elts = elts.concat(formatLine(lines[i]));
|
|
}
|
|
let elt = document.createElement('p');
|
|
elts.forEach(e => elt.appendChild(e));
|
|
return elt;
|
|
}
|
|
|
|
let lastMessage = {};
|
|
|
|
function addToChatbox(peerId, nick, kind, message){
|
|
let container = document.createElement('div');
|
|
container.classList.add('message');
|
|
if(kind !== 'me') {
|
|
let p = formatLines(message.split('\n'));
|
|
if (lastMessage.nick !== nick || lastMessage.peerId !== peerId) {
|
|
let user = document.createElement('p');
|
|
user.textContent = nick;
|
|
user.classList.add('message-user');
|
|
container.appendChild(user);
|
|
}
|
|
p.classList.add('message-content');
|
|
container.appendChild(p);
|
|
lastMessage.nick = nick;
|
|
lastMessage.peerId = peerId;
|
|
} else {
|
|
let asterisk = document.createElement('span');
|
|
asterisk.textContent = '*';
|
|
asterisk.classList.add('message-me-asterisk');
|
|
let user = document.createElement('span');
|
|
user.textContent = nick;
|
|
user.classList.add('message-me-user');
|
|
let content = document.createElement('span');
|
|
formatLine(message).forEach(elt => {
|
|
content.appendChild(elt);
|
|
});
|
|
content.classList.add('message-me-content');
|
|
container.appendChild(asterisk);
|
|
container.appendChild(user);
|
|
container.appendChild(content);
|
|
container.classList.add('message-me');
|
|
delete(lastMessage.nick);
|
|
delete(lastMessage.peerId);
|
|
}
|
|
|
|
let box = document.getElementById('box');
|
|
box.appendChild(container);
|
|
if(box.scrollHeight > box.clientHeight) {
|
|
box.scrollTop = box.scrollHeight - box.clientHeight;
|
|
}
|
|
|
|
return message;
|
|
}
|
|
|
|
function clearChat() {
|
|
lastMessage = {};
|
|
document.getElementById('box').textContent = '';
|
|
}
|
|
|
|
function handleInput() {
|
|
let input = document.getElementById('input');
|
|
let data = input.value;
|
|
input.value = '';
|
|
|
|
let message, me;
|
|
|
|
if(data === '')
|
|
return;
|
|
|
|
if(data.charAt(0) === '/') {
|
|
if(data.charAt(1) === '/') {
|
|
message = data.substring(1);
|
|
me = false;
|
|
} else {
|
|
let space, cmd, rest;
|
|
space = data.indexOf(' ');
|
|
if(space < 0) {
|
|
cmd = data;
|
|
rest = '';
|
|
} else {
|
|
cmd = data.slice(0, space);
|
|
rest = data.slice(space + 1).trim();
|
|
}
|
|
|
|
switch(cmd) {
|
|
case '/me':
|
|
message = rest;
|
|
me = true;
|
|
break;
|
|
case '/leave':
|
|
serverConnection.close();
|
|
return;
|
|
case '/clear':
|
|
if(!serverConnection.permissions.op) {
|
|
displayError("You're not an operator");
|
|
return;
|
|
}
|
|
serverConnection.groupAction('clearchat');
|
|
return;
|
|
case '/lock':
|
|
case '/unlock':
|
|
if(!serverConnection.permissions.op) {
|
|
displayError("You're not an operator");
|
|
return;
|
|
}
|
|
serverConnection.groupAction(cmd.slice(1));
|
|
return;
|
|
case '/record':
|
|
case '/unrecord':
|
|
if(!serverConnection.permissions.record) {
|
|
displayError("You're not allowed to record");
|
|
return;
|
|
}
|
|
serverConnection.groupAction(cmd.slice(1));
|
|
return;
|
|
case '/op':
|
|
case '/unop':
|
|
case '/kick':
|
|
case '/present':
|
|
case '/unpresent': {
|
|
if(!serverConnection.permissions.op) {
|
|
displayError("You're not an operator");
|
|
return;
|
|
}
|
|
let id;
|
|
if(rest in users) {
|
|
id = rest;
|
|
} else {
|
|
for(let i in users) {
|
|
if(users[i] === rest) {
|
|
id = i;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if(!id) {
|
|
displayError('Unknown user ' + rest);
|
|
return;
|
|
}
|
|
serverConnection.userAction(cmd.slice(1), id)
|
|
return;
|
|
}
|
|
default:
|
|
displayError('Uknown command ' + cmd);
|
|
return;
|
|
}
|
|
}
|
|
} else {
|
|
message = data;
|
|
me = false;
|
|
}
|
|
|
|
let username = getUsername();
|
|
if(!username) {
|
|
displayError("Sorry, you're anonymous, you cannot chat");
|
|
return;
|
|
}
|
|
|
|
try {
|
|
serverConnection.chat(username, me ? 'me' : '', message);
|
|
} catch(e) {
|
|
console.error(e);
|
|
displayError(e);
|
|
}
|
|
}
|
|
|
|
document.getElementById('inputform').onsubmit = function(e) {
|
|
e.preventDefault();
|
|
handleInput();
|
|
};
|
|
|
|
document.getElementById('input').onkeypress = function(e) {
|
|
if(e.key === 'Enter' && !e.ctrlKey && !e.shiftKey && !e.metaKey) {
|
|
e.preventDefault();
|
|
handleInput();
|
|
}
|
|
};
|
|
|
|
function chatResizer(e) {
|
|
e.preventDefault();
|
|
let chat = document.getElementById('chat');
|
|
let start_x = e.clientX;
|
|
let start_width = parseFloat(
|
|
document.defaultView.getComputedStyle(chat).width.replace('px', ''),
|
|
);
|
|
let inputbutton = document.getElementById('inputbutton');
|
|
function start_drag(e) {
|
|
let width = start_width + e.clientX - start_x;
|
|
if(width < 40)
|
|
inputbutton.style.display = 'none';
|
|
else
|
|
inputbutton.style.display = 'inline';
|
|
chat.style.width = width + 'px';
|
|
}
|
|
function stop_drag(e) {
|
|
document.documentElement.removeEventListener(
|
|
'mousemove', start_drag, false,
|
|
);
|
|
document.documentElement.removeEventListener(
|
|
'mouseup', stop_drag, false,
|
|
);
|
|
}
|
|
|
|
document.documentElement.addEventListener(
|
|
'mousemove', start_drag, false,
|
|
);
|
|
document.documentElement.addEventListener(
|
|
'mouseup', stop_drag, false,
|
|
);
|
|
}
|
|
|
|
document.getElementById('resizer').addEventListener('mousedown', chatResizer, false);
|
|
|
|
let errorTimeout = null;
|
|
|
|
function setErrorTimeout(ms) {
|
|
if(errorTimeout) {
|
|
clearTimeout(errorTimeout);
|
|
errorTimeout = null;
|
|
}
|
|
if(ms) {
|
|
errorTimeout = setTimeout(clearError, ms);
|
|
}
|
|
}
|
|
|
|
function displayError(message) {
|
|
let errspan = document.getElementById('errspan');
|
|
errspan.textContent = message;
|
|
errspan.classList.remove('noerror');
|
|
errspan.classList.add('error');
|
|
setErrorTimeout(8000);
|
|
}
|
|
|
|
function displayWarning(message) {
|
|
// don't overwrite real errors
|
|
if(!errorTimeout)
|
|
return displayError(message);
|
|
}
|
|
|
|
function clearError() {
|
|
let errspan = document.getElementById('errspan');
|
|
errspan.textContent = '';
|
|
errspan.classList.remove('error');
|
|
errspan.classList.add('noerror');
|
|
setErrorTimeout(null);
|
|
}
|
|
|
|
document.getElementById('userform').onsubmit = function(e) {
|
|
e.preventDefault();
|
|
let username = document.getElementById('username').value.trim();
|
|
let password = document.getElementById('password').value;
|
|
setUserPass(username, password);
|
|
serverConnect();
|
|
};
|
|
|
|
document.getElementById('disconnectbutton').onclick = function(e) {
|
|
serverConnection.close();
|
|
};
|
|
|
|
function serverConnect() {
|
|
serverConnection = new ServerConnection();
|
|
serverConnection.onconnected = gotConnected;
|
|
serverConnection.onclose = gotClose;
|
|
serverConnection.ondownstream = gotDownStream;
|
|
serverConnection.onuser = gotUser;
|
|
serverConnection.onpermissions = gotPermissions;
|
|
serverConnection.onchat = addToChatbox;
|
|
serverConnection.onclearchat = clearChat;
|
|
serverConnection.onusermessage = function(kind, message) {
|
|
if(kind === 'error')
|
|
displayError(`The server said: ${message}`);
|
|
else
|
|
displayWarning(`The server said: ${message}`);
|
|
}
|
|
return serverConnection.connect(`ws${location.protocol === 'https:' ? 's' : ''}://${location.host}/ws`);
|
|
}
|
|
|
|
function start() {
|
|
group = decodeURIComponent(location.pathname.replace(/^\/[a-z]*\//, ''));
|
|
let title = group.charAt(0).toUpperCase() + group.slice(1);
|
|
if(group !== '') {
|
|
document.title = title;
|
|
document.getElementById('title').textContent = title;
|
|
}
|
|
|
|
setLocalMute(localMute);
|
|
|
|
document.getElementById('connectbutton').disabled = false;
|
|
|
|
let userpass = getUserPass();
|
|
if(userpass)
|
|
serverConnect();
|
|
}
|
|
|
|
start();
|