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client.min.html
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client.min.html
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<!DOCTYPE html>
<html>
<head>
<title>chat</title>
<style type="text/css">
html, body {
margin: 0;
background-color: #aaaaaa;
}
#wrapper {
display: flex;
flex-direction: column;
height: 100vh;
width: 100%;
overflow-y: hidden;
}
#input {
margin: 8px;
}
#content {
margin: 8px;
flex-grow: 1;
overflow-y: scroll;
overflow-x: auto;
}
.time {
font-weight: normal;
font-size: x-small;
color: lightslategray;
}
.error {
font-weight: bold;
color: red;
}
.info {
font-weight: normal;
color: lightslategray;
}
.wall {
font-weight: normal;
color: red;
}
.server {
font-weight: bold;
color: black;
}
.user {
font-weight: bold;
color: green;
}
.user.admin {
color: yellow;
}
.user.self {
color: orange;
}
.channel {
font-weight: bold;
color: blue;
}
.topic {
font-weight: bold;
color: black;
}
</style>
<script src="markdown-it.min.js"></script>
<script lang="javascript">
function beep() {
var snd = new Audio('data:audio/wav;base64,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');
snd.play();
}
function sanitize(string) {
const map = {
'&': '&',
'<': '<',
'>': '>',
'"': '"',
"'": ''',
'/': '/',
'=': '=',
'`': '`'
};
const reg = /[&<>"'/=`]/ig;
return string.replace(reg, (match)=>(map[match]));
};
var content = undefined;
var defaultAction = (command) => { error(general, 'no channel selected. use /select to set the active channel.'); };
var myself = undefined;
var timeFormat = Intl.DateTimeFormat(undefined, {
hour: "numeric",
minute: "numeric",
hour12: false
});
var ws = { send: () => { error('not connected to any server</span>');} };
var md = window.markdownit({html: false, xhtmlOut: true, breaks: true, linkify: true, typographer: false});
function send(command, args=undefined) {
data = [command];
if (args) data.push(args);
ws.send(JSON.stringify(data));
};
function append(text) {
content.innerHTML += '<span class="time">'+timeFormat.format(new Date())+' </span>'+text+'<br/>';
content.scrollTop = content.scrollHeight;
}
function wall(text) {
append('<span class="wall">'+text+'</span>');
}
function error(text) {
append('<span class="error">'+text+'</span>');
}
function info(text) {
append('<span class="info">'+text+'</span>');
}
function channelOptionsToString(options) {
let result = ''
if (options.moderated) result += 'm';
if (options.topic) result += 't';
if (options.secret) result += 's';
if (options.password) result += 'k';
if (result) return ' (+'+result+')'; else return '';
};
function userOptionsToString(options) {
let plus = '';
let minus = '';
if (options) {
if (options.admin) plus += 'a';
if (options.bot) plus += 'b';
if (options.operator) plus += 'o';
if (('voiced' in options) && !options.voiced) minus += 'v'
}
if (!plus && !minus)
return '<span class="options"></span>';
else
return '<span class="options">('+(plus?'+'+plus:'')+(minus?'-'+minus:'')+')</span>';
};
function channelToString(channel, options=undefined) {
return '<span class="channel">#'+sanitize(channel)+(options?channelOptionsToString(options):'')+'</span>';
};
function userToString(user, options=undefined) {
if (typeof user == 'string')
return '<span class="user">@'+sanitize(user)+'</span>'+' '+userOptionsToString(options);
else {
all = {...user.options, ...options}
cls = !!all.admin?'admin':'';
prefix = !!all.bot?'!':'@';
return '<span class="user '+cls+'">'+prefix+sanitize(user.nick||'(undefined)')+' '+userOptionsToString(all)+'</span>';
}
};
function messageToString(message) {
let msg = md.renderInline(message);
msg = msg.replace(/@([^@#&!\s]+)/g, (match, p1) => {
let cls = 'user';
if (p1 == myself.nick) {
beep();
cls += " self";
};
return '<span class="'+cls+'">'+match+'</span>';
});
return msg;
};
function identToString(user) {
return '<span class="user">'+sanitize(user.nick||'(undefined)')+'@'+user.url+'</span>';
};
function patternToString(pattern) {
return ('nick' in pattern ? pattern.nick : '*')+('channel' in pattern ? '#'+pattern.channel : '')+('url' in pattern ? '@'+pattern.url : '');
}
function stringToUser(value) {
result = /^(?<nick>[^@#&!\s]+)?(#(?<channel>[^@#&!\s]+))?(@(?<url>[^@#&!\s]*))?$/.exec(value);
if (!result) return undefined;
else return result.groups;
};
var ws = { send: () => { error('not connected to any server</span>');} };
function selectChannel(channel) {
let clnChannel = sanitize(channel)
defaultAction = (command) => send('msg', {'channel':clnChannel, 'content':command});
};
function selectUser(user) {
defaultAction = (command) => send('msg', {'user':user, 'content':command});
};
function setInputFocus() {
document.getElementById("message").focus();
};
function connect(host) {
ws = new WebSocket(`ws://${host}`);
ws.onmessage = (event) => {
try {
//console.log(event.data);
let message = JSON.parse(event.data);
switch (message[0]) {
case 'version':
break;
case 'ident':
myself = message[1];
wall(`you are identified as ${identToString(message[1])}`);
break;
case 'motd':
wall(`${messageToString(message[1].content).replace('\n','<br/>')}`);
break;
case 'time':
wall(`the time on the server is ${sanitize(message[1].local)}`);
break;
case 'nick':
if (!('old' in message[1]) || !('channel' in message[1])) {
myself = message[1].new;
append(`you are now known as ${userToString(message[1].new)}`);
} else if ('channel' in message[1]) {
append(`${channelToString(message[1].channel)}: ${userToString(message[1].old)} changed name to ${userToString(message[1].new)}`);
} else {
append(`${userToString(message[1].old)} changed name to ${userToString(message[1].new)}`);
}
break;
case 'list':
if (message[1].channels.length)
wall(`channel list:<br> ${message[1].channels.map(([channel,options])=>channelToString(channel, options)).join('<br> ')}`);
else
wall('channel list is empty');
break;
case 'users':
if (message[1].channel) {
append(`${channelToString(message[1].channel)}: user list:<br> ${message[1].users.map(([user,options])=>userToString(user, options)+' ('+identToString(user)+')').join('<br> ')}`);
} else if (message[1].pattern) {
wall(`users matching ${patternToString(message[1].pattern)}:<br> ${message[1].match.map(([user,options,channels])=>userToString(user, options)+' ('+identToString(user)+') '+channels.map(([channel, options])=>channelToString(channel)+userOptionsToString(options)).join(' ')).join('<br> ')}`);
} else {
wall(`user list:<br> ${message[1].users.map(([user,options])=>userToString(user, options)+' ('+identToString(user)+')').join('<br> ')}`);
}
break;
case 'join':
append(`${channelToString(message[1].channel)}: ${userToString(message[1].user, message[1].options)} joined the channel`);
break;
case 'topic':
if (message[1].value)
append(`${channelToString(message[1].channel)}: topic was set to "<span class="topic">${sanitize(message[1].value)}</span>"`);
else
append(`${channelToString(message[1].channel)}: topic was not set`);
break;
case 'msg':
if ('channel' in message[1]) {
append(`${channelToString(message[1].channel)}: ${userToString(message[1].from)}: ${messageToString(message[1].content)}`);
} else {
if (message[1].from.url != myself.url) beep();
append(`${userToString(message[1].from)}: ${userToString(message[1].user)}: ${messageToString(message[1].content)}`);
}
break;
case 'leave':
append(`${channelToString(message[1].channel)}: ${userToString(message[1].user)} left the channel (${sanitize(message[1].reason||'no reason')})`);
break;
case 'mode':
if ('channel' in message[1]) {
if ('user' in message[1]) {
append(`${channelToString(message[1].channel)}: user mode for ${userToString(message[1].user)} is ${userOptionstoString(message[1].options)||'(-)'}`);
} else {
append(`${channelToString(message[1].channel)}: channel mode is${channelOptionsToString(message[1].options)}`);
}
} else if ('user' in message[1]) {
wall(`user mode for ${userToString(message[1].user)} is ${userOptionstoString(message[1].options)||'(-)'}`);
}
break;
case 'kick':
append(`${channelToString(message[1].channel)}: ${userToString(message[1].user)} was kicked out of the channel (${sanitize(message[1].reason||'no reason')})`);
break;
case 'wall':
wall(`${userToString(message[1].from)}: ${messageToString(message[1].content)}`);
beep();
break;
case 'error':
error(`${sanitize(message[1].message)}`);
break;
}
} catch (exception) {
error('internal error while processing server message:<br>'+exception);
}
};
};
function help() {
append('<span class="info">'
+ '<p>This is ws-chat (tentative name), an IRC like chat running in your browser.</p>'
+ '<p>command help:<table>'
+ '<tr><td style="vertical-align:top">/help</td><td>show this help message</td></tr>'
+ '<tr><td style="vertical-align:top">/connect <host:port></td><td>connect to a chat server</td></tr>'
+ '<tr><td style="vertical-align:top">/ident</td><td>ask for your own identification string</td></tr>'
+ '<tr><td style="vertical-align:top">/motd</td><td>display the server message of the day</td></tr>'
+ '<tr><td style="vertical-align:top">/motd <message></td><td>set the server message of the day (requires: admin)</td></tr>'
+ '<tr><td style="vertical-align:top">/time</td><td>show the server local time</td></tr>'
+ '<tr><td style="vertical-align:top">/nick <nickname></td><td>set the nickname you will be yelled at</td></tr>'
+ '<tr><td style="vertical-align:top">/list</td><td>list all channels on this server</td></tr>'
+ '<tr><td style="vertical-align:top">/users <pattern></td><td>list all visible users matching the specified pattern.</td></tr>'
+ '<tr><td style="vertical-align:top">/join <#channel> [<password>]</td><td>join a channel and participate ! if the channel does not exist, it is automatically created.</td></tr>'
+ '<tr><td style="vertical-align:top">/topic <#channel></td><td>show the current topic of the specified channel</td></tr>'
+ '<tr><td style="vertical-align:top">/topic <#channel> <topic...></td><td>set the topic of the specified channel</td></tr>'
+ '<tr><td style="vertical-align:top">/msg <#channel> <message...></td><td>send a message to the specified channel</td></tr>'
+ '<tr><td style="vertical-align:top">/msg <@user> <message...></td><td>send a private message to the specified user</td></tr>'
+ '<tr><td style="vertical-align:top">/leave <#channel> [<reason>]</td><td>leave the channel. the channel is automatically destroyed when the last particiapnt leaves</td></tr>'
+ '<tr><td style="vertical-align:top">/mode <#channel></td><td>query modes for this channel</td></tr>'
+ '<tr><td style="vertical-align:top">/mode <#channel> [+|- <channel modes>] [<password>]</td><td>set modes for this channel</td></tr>'
+ '<tr><td style="vertical-align:top">/mode <#channel> <@users> [+|- <channel user modes>]</td><td>set modes for all matching users on this channel</td></tr>'
+ '<tr><td style="vertical-align:top">/mode <@users> [+|- <user modes>]</td><td>set global modes for those matching users</td></tr>'
+ '<tr><td style="vertical-align:top">/kick <#channel> <@users> [<reason>]</td><td>kick some people out of a channel (requires: operator, admin)</td></tr>'
+ '<tr><td style="vertical-align:top">/wall <@users> <content></td><td>send a wall notice to all matching users (requires: admin)</td></tr>'
+ '<tr><td style="vertical-align:top">/select <#channel></td><td>makes the specified channel the active channel. everything you type in the input box will be sent to this channel</td></tr></table>'
+ '</p>'
+ '<p>Differentiate users by using an extended name syntax: <br/> @nick<#channel><@host:port>. example: @test @test#channel @[email protected]:25642 @test#[email protected]:25642.<br/>'
+ 'some commands (users, mode, kick, wall) accept a wildcard pattern: the command is applied to all users matching the pattern. Wildcards are * and ?, escape a wildcard by preceding it with \\.'
+ '<p>Channel modes are:<table>'
+ '<tr><td style="vertical-align:top">s :</td><td><i>secret</i>. the channel does not appear when listing channels with the /list command (except for server admnistrators)</td></tr>'
+ '<tr><td style="vertical-align:top">m :</td><td><i>moderated</i>. only users with the +v mode enabled can talk to the channel</td></tr>'
+ '<tr><td style="vertical-align:top">t :</td><td><i>limited topic</i>. only channel operators can change the topic of the channel</td></tr>'
+ '<tr><td style="vertical-align:top">k :</td><td><i>password (key) protected</i>. the channel is only accessible to people knowing the password</td></tr>'
+ '</table><br/>'
+ '<p>Channel specific user modes are:<table>'
+ '<tr><td style="vertical-align:top">o :</td><td><i>operator</i>. operators have super powers onto a channel</td></tr>'
+ '<tr><td style="vertical-align:top">v :</td><td><i>voiced</i>. voiced people are allowed to talk on moderated channels</td></tr>'
+ '</table><br/>'
+ '<p>User modes are:<table>'
+ '<tr><td style="vertical-align:top">a :</td><td><i>admin</i>. server administrator, better not mess with them</td></tr>'
+ '<tr><td style="vertical-align:top">b :</td><td><i>bot</i>. complacency flag to signal a user is a bot</td></tr>'
+ '</table></p>'
+ '<p>You can use <a href="https://commonmark.org/help/" taget="_blank">Markdown</a> to format messages</p>'
+ '</span>')
}
function input() {
let split = (input, limit=-1) => {
separator = /\s+/g
const output = [];
let finalIndex = 0;
while (limit--) {
const lastIndex = separator.lastIndex;
const search = separator.exec(input);
if (search === null) {
break;
}
finalIndex = separator.lastIndex;
output.push(input.slice(lastIndex, search.index));
}
output.push(input.slice(finalIndex));
return output;
}
let input = document.getElementById('message');
let command = input.value.trimEnd();
if (command == '/help') {
help();
} else if (command.startsWith('/connect ')) {
args = split(command, 1);
if (args.length > 2) error('/connect: too many arguments');
else connect(args[1]);
} else if (command == '/ident') {
send('ident');
} else if (command == '/motd') {
send('motd');
} else if (command.startsWith('/motd ')) {
args = split(command, 1);
send('motd',{'value': args[1]});
} else if (command == '/time') {
send('time');
} else if (command.startsWith('/nick ')) {
args = split(command, 1);
if (args.length > 2) error('/nick: too many arguments');
else send('nick',{'new':args[1]});
} else if (command == '/list') {
send('list');
} else if (command == '/users') {
send('users');
} else if (command.startsWith('/users ')) {
args = split(command, 1);
if (args.length > 2) error('/users: too many arguments');
else {
send('users',{'pattern':stringToUser(args[1])})
};
} else if (command.startsWith('/join ')) {
args = split(command, 2);
if (args.length > 3) error('/join: too many arguments');
else {
if (!args[1].startsWith('#')) error('/join: channel expected');
else send('join',{'channel':args[1].slice(1), 'password':args.length>2?args[2]:undefined})
};
} else if (command.startsWith('/topic ')) {
args = split(command, 2);
if (!args[1].startsWith('#')) error('/topic: channel expected');
else send('topic',{'channel':args[1].slice(1), 'value': args.length>2?args[2]:undefined})
} else if (command.startsWith('/msg ')) {
args = split(command, 2);
if (args.length<3) error('/msg: missing the message...');
else {
if (args[1].startsWith('#')) send('msg', {'channel':args[1].slice(1), 'content':args[2]});
else if (args[1].startsWith('@')) {
let user = stringToUser(args[1].slice(1));
if (!user) error(`/msg: malformed user specifier ${args[1].slice(1)}`);
else send('msg', {'user':user, 'content':args[2]});
} else error('/msg: channel or user expected');
}
} else if (command.startsWith('/leave ')) {
args = split(command, 2);
if (!args[1].startsWith('#')) error('/leave: channel expected');
else send('leave',{'channel':args[1].slice(1), 'reason': args.length>2?args[2]:undefined})
} else if (command.startsWith('/select ')) {
args = split(command, 1);
if (args.length > 2) error('/select: too many arguments');
else {
if (!args[1].startsWith('#')) error('/select: channel expected');
else {
let channel = sanitize(args[1].slice(1));
selectChannel(channel);
info(`${channelToString(channel)} is now the active channel`);
}
};
} else if (command.startsWith('/mode ')) {
args = split(command);
if (args[1].startsWith('#')) {
if ((args.length > 2) && args[2].startsWith('@')) {
let options = {};
for (let arg of args.slice(3)) {
let value = true;
for (let chr of arg) {
if (chr == '+') value = true;
else if (chr == '-') value = false;
else if (chr == 'o') options.operator = value;
else if (chr == 'v') options.voiced = value;
else error('/mode: unrecognized mode character');
}
}
let user = stringToUser(args[2].slice(1));
if (!user) error(`/mode: malformed user specifier ${args[2].slice(1)}`);
else send('mode', {'channel':args[1].slice(1), 'user':user, 'options': args.length>3 ? options : undefined});
} else {
let options = {};
let password = false;
for (let arg of args.slice(2)) {
if (password) {
options.password = arg;
password = false;
} else {
let value = true;
for (let chr of arg) {
if (chr == '+') value = true;
else if (chr == '-') value = false;
else if (chr == 'm') options.moderated = value;
else if (chr == 's') options.secret = value;
else if (chr == 't') options.topic = value;
else if (chr == 'k') { password = true; }
else error('/mode: unrecognized mode character');
}
}
}
send('mode', {'channel':args[1].slice(1), 'options': args.length>2 ? options : undefined});
}
} else if (args[1].startsWith('@')) {
let options = {};
for (let arg of args.slice(2)) {
let value = true;
for (let chr of arg) {
if (chr == '+') value = true;
else if (chr == '-') value = false;
else if (chr == 'a') options.admin = value;
else if (chr == 'b') options.bot = value;
else error('/mode: unrecognized mode character');
}
}
let user = stringToUser(args[1].slice(1));
if (!user) error(`/mode: malformed user specifier ${args[1].slice(1)}`);
else send('mode', {'user': user, 'options': args.length>2 ? options : undefined});
} else {
error('/mode: no channel or user specified');
}
} else if (command.startsWith('/kick ')) {
args = split(command, 3);
if (!args[1].startsWith('#')) error('/kick: channel expected before user');
else if (!args[2].startsWith('@')) error('/kick: user expected after channel');
else send('kick',{'channel':args[1].slice(1),'user':stringToUser(args[2].slice(1)),'reason': args.length>3?args[3]:undefined});
} else if (command.startsWith('/wall ')) {
args = split(command, 2);
if (args.length<3) error('/wall: missing the message...');
else if (!args[1].startsWith('@')) error('/wall: user expected after channel');
else send('wall',{'user':stringToUser(args[1].slice(1)),'content':args[2]});
} else {
defaultAction(command);
}
input.value = '';
};
window.onload = () => {
content = document.getElementById('content');
help();
}
</script>
</head>
<body>
<div id="wrapper">
<div id="input">
<form action="javascript:input()">
<input type="text" id="message" style="width:80%" autofocus/><input type="submit" value="send"/>
</form>
</div>
<div id="content"></div>
</div>
</body>
</html>