From 3a870cb70da95b7ef6da6a621ca90cdb17051175 Mon Sep 17 00:00:00 2001 From: szdytom Date: Thu, 25 Mar 2021 13:57:12 +0800 Subject: [PATCH] [feature] first commit --- .gitignore | 1 + package-lock.json | 717 +++++++++++++++++++++++++++++++++++++++++ package.json | 21 ++ public/asset/jquery.js | 2 + public/index.html | 28 ++ public/script.js | 200 ++++++++++++ public/style.css | 103 ++++++ src/command.ts | 124 +++++++ src/index.ts | 65 ++++ src/room.ts | 15 + src/user.ts | 162 ++++++++++ 11 files changed, 1438 insertions(+) create mode 100644 .gitignore create mode 100644 package-lock.json create mode 100644 package.json create mode 100644 public/asset/jquery.js create mode 100644 public/index.html create mode 100644 public/script.js create mode 100644 public/style.css create mode 100644 src/command.ts create mode 100644 src/index.ts create mode 100644 src/room.ts create mode 100644 src/user.ts diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..40b878d --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +node_modules/ \ No newline at end of file diff --git a/package-lock.json b/package-lock.json new file mode 100644 index 0000000..d7b3fed --- /dev/null +++ b/package-lock.json @@ -0,0 +1,717 @@ +{ + "name": "wschat-ng", + "version": "1.0.0", + "lockfileVersion": 1, + "requires": true, + "dependencies": { + "@types/body-parser": { + "version": "1.19.0", + "resolved": "https://registry.npm.taobao.org/@types/body-parser/download/@types/body-parser-1.19.0.tgz", + "integrity": "sha1-BoWzxH6zAG/+0RfN1VFkth+AU48=", + "dev": true, + "requires": { + "@types/connect": "*", + "@types/node": "*" + } + }, + "@types/component-emitter": { + "version": "1.2.10", + "resolved": "https://registry.npm.taobao.org/@types/component-emitter/download/@types/component-emitter-1.2.10.tgz?cache=0&sync_timestamp=1613378698401&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2F%40types%2Fcomponent-emitter%2Fdownload%2F%40types%2Fcomponent-emitter-1.2.10.tgz", + "integrity": 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+
+ Press Ctrl + Enter to send + +
+ + + + + + + \ No newline at end of file diff --git a/public/script.js b/public/script.js new file mode 100644 index 0000000..989ea6b --- /dev/null +++ b/public/script.js @@ -0,0 +1,200 @@ +let username; +let is_reconnection = false; +let last_command = null; +const server = `ws://${location.host}`; +const ws = init(); + +function clear_message() { + $('#message').empty(); +} + +function clear_send() { + $('#send').val(''); +} + +function format_time(time) { + return `${time.getMonth() + 1}-${time.getDate()} ${time.getHours()}:${time.getMinutes()}:${time.getSeconds()}`; +} + +if (String.prototype.replaceAll === undefined) { + String.prototype.replaceAll = function(before, after) { + let res = ''; + let matched = 0; + for (let i = 0; i < this.length; i += 1) { + if (this[i] === before[matched]) { + matched += 1; + if (matched === before.length) { + res += after; + matched = 0; + } + } else { + for (let j = i - matched; j <= i; j += 1) { + res += this[j]; + } + matched = 0; + + } + } + + for (let i = this.length - matched; i < this.length; ++i) { + res += this[i]; + } + + return res; + }; +} + +function write_message(data) { + const message = data.msg; + + let message_class = ''; + let message_source = data.from; + if (data.type === 'system-message') { + message_class = 'msg-from-info'; + message_source = 'SYSTEM INFO'; + } else if (data.type === 'command-block') { + message_class = 'msg-from-cb'; + message_source = 'COMMAND BLOCK'; + } + + + $('#message').append( +` +
+ + ${message_source} + ${format_time(new Date())} + +
+ + 
${message}
+ +
+` + ); + scroll_to_bottom(); +} + +function init() { + clear_message(); + login_name(); + + const ws = new io(server); + console.log('ws: ', ws); + + ws.on('connect', () => { + if (is_reconnection) { + write_message({ + from: 'INFO', + msg: 'Reconnected.', + is_private: true, + }); + } else { + write_message({ + from: 'INFO', + msg: 'Connected.', + is_private: true, + }); + is_reconnection = true; + } + ws.emit('set-name', username); + }); + + ws.on('system-message', evt => { + let msg; + if (evt.type === 'join-room') { + msg = `${evt.data.user} joined room ${evt.data.room}.`; + } + + write_message({ + type: 'system-message', + msg: msg, + is_private: true, + }); + }); + + ws.on('new message', evt => { + write_message({ + type: 'normal', + from: evt.sender, + msg: evt.data, + }); + }); + + ws.on('command-block-reply', data => { + write_message({ + type: 'command-block', + msg: `>> ${last_command}\n<- ${data}`, + is_private: true, + }); + }); + + ws.on('disconnect', () => { + write_message({ + type: 'system-message', + msg: 'Disconnected.', + is_private: true, + }); + }); + + return ws; +} + +function open_prompt(content, tilte) { + return window.prompt(content); +} + +function login_name() { + username = open_prompt('[Login] Input your name'); +} + +function send() { + let data = $('#send').val(); + if (data === '') { + return; + } + + if (data === '/clear' || data === '/cls') { + clear_message(); + clear_send(); + return; + } + + if (data.startsWith('/')) { + // a command + last_command = data; + } + + if (data.startsWith('/su')) { + // a administrator login command. + // now ask for passcode + const code = open_prompt('Please input the passcode'); + data = `/su ${code}`; + } + + if (ws.connected) { + ws.emit('message', data); + } else { + write_message({ + type: 'system-message', + msg: 'Socket not connected or has already disconnected. Failed to send.', + is_private: true, + }); + } + + clear_send(); +} + +function scroll_to_bottom() { + if ($('#scroll-option').is(':checked')) { + document.getElementById('message').scrollTop = document.getElementById('message').scrollHeight; + } +} + + +document.addEventListener('keydown', function(key_event) { + if (key_event.code === 'Enter' && key_event.ctrlKey) { + key_event.preventDefault(); + send(); + } +}); diff --git a/public/style.css b/public/style.css new file mode 100644 index 0000000..1a28117 --- /dev/null +++ b/public/style.css @@ -0,0 +1,103 @@ +body { + font-family: sans-serif; + margin: 0; + overflow: hidden; +} + +textarea { + border: none; +} + +input { + background-color: #fcd363; +} + +button { + border: none; + padding: 10px; + border-radius: 5px; + background-color: #5bb2ec; + color: #fff; +} + +pre { + margin: 0; +} + +.note { + margin-right: 5px; + color: #888888; +} + +#message { + background-color: #f2f2f2; + margin: 0; + font-size: 20px; + padding: 20px; + height: 70vh; + width: calc(100vw - 20px); + color: #000; + font-family: 'Fira Code', Consolas, monospace; + overflow-y: scroll; + word-wrap: break-word; +} + +#send { + background-color: #fff; + margin: 0; + font-size: 20px; + padding: 30px; + width: 100vw; + height: 30vh; +} + +.send-button { + font-size: 20px; +} + +.bottom-box { + position: absolute; + bottom: 30px; + right: 30px; +} + +.top-box { + position: absolute; + top: 20px; + right: 20px; +} + +.msg { + margin-top: 15px; +} + +.msg-content { + color: #606266; +} + +.msg-private::after { + content: " PRIVATE"; + color: #F7BA2A; +} + +.msg-from { + font-weight: 600; + color: #303133; +} + +.msg-time { + font-weight: normal; + color: #C0C4CC; +} + +.msg-from::before { + content: "@ "; +} + +.msg-from-info { + color: #5bb2ec; +} + +.msg-from-cb { + color: #000000; +} \ No newline at end of file diff --git a/src/command.ts b/src/command.ts new file mode 100644 index 0000000..70f4228 --- /dev/null +++ b/src/command.ts @@ -0,0 +1,124 @@ +import { User, validate_username, kill_username, register_username, grant_access, find_user } from './user'; +import { Server as SocketServer, Socket } from 'socket.io'; +import { set_room, all_rooms } from './room'; + +export function is_command(cmd: string) { + return cmd.startsWith('/'); +}; + +function command_reply(msg: string, socket: Socket) { + socket.emit('command-block-reply', msg); +} + +function mask_room_name(name: string) { + if (name === 'global') { + return name; + } + return `costum-room#${name}`; +} + +function unmask_room_name(name: string) { + if (name === 'global') { + return name; + } + + if (name.startsWith('costum-room#')) { + return name.substring(12); + } + + return null; +} + +export function run_command(cmd: string, uid: string, users: Map, io: SocketServer, silent: boolean = false) { + if (!is_command(cmd)) { return; } + + const user = users.get(uid); + const socket = user.socket; + const command_reply = (msg: string) => { + if (silent) { return; } + socket.emit('command-block-reply', msg); + }; + + const cmd_set = cmd.split(/\s+/); + + if (cmd.startsWith('/disconnect')) { + command_reply('Diconnecting. Bye!',); + socket.disconnect(); + return; + } + + if (cmd.startsWith('/join')) { + const room_name = cmd_set[1]; + set_room(room_name); + const masked_name = mask_room_name(room_name); + socket.join(masked_name); + command_reply('OK.'); + return; + } + + if (cmd.startsWith('/ls')) { + if (cmd_set[1] === 'own') { + command_reply(JSON.stringify( + Array + .from(socket.rooms) + .map(x => unmask_room_name(x)) + .filter(x => x !== null) + )); + return; + } + + command_reply(JSON.stringify(all_rooms())); + return; + } + + if (cmd.startsWith('/rename')) { + const new_name = cmd_set[1].toString(); + if (validate_username(new_name)) { + kill_username(user.name); + register_username(new_name, user.id); + user.name = new_name; + command_reply(`Renamed to ${new_name}.`); + } else { + command_reply('Failed to rename.'); + } + return; + } + + if (cmd.startsWith('/whoami')) { + command_reply(JSON.stringify({ + name: user.name, + id: user.id, + is_administrator: user.is_administrator, + })); + return; + } + + if (cmd.startsWith('/ps')) { + let result = '['; + users.forEach(user => { + result += `"${user.name}",`; + }); + result = result.substring(0, result.length - 1) + ']'; + command_reply(result); + return; + } + + if (cmd.startsWith('/su')) { + const code = cmd_set[1]; + grant_access(user, code); + command_reply('You are administartor now.'); + return; + } + + if (cmd.startsWith('/resign')) { + user.is_administrator = false; + command_reply('OK.'); + return; + } + + if (cmd.startsWith('/filter')) { + const filter_string = cmd.substring('/filter'.length); + command_reply(JSON.stringify(find_user(filter_string, users, uid))); + return; + } +}; diff --git a/src/index.ts b/src/index.ts new file mode 100644 index 0000000..1307d68 --- /dev/null +++ b/src/index.ts @@ -0,0 +1,65 @@ +import SocketIO = require('socket.io'); +import Express = require('express'); +import http_server = require('http'); +import path = require('path'); + +import { kill_username, register_username, User } from './user'; +import { is_command, run_command } from './command'; + +const app = Express(); +const http = new http_server.Server(app); +const io = new SocketIO.Server(http); + +const users = new Map(); + +io.on('connection', socket => { + const user: User = { + id: socket.id, + name: socket.id, + socket: socket, + is_administrator: false, + }; + users.set(socket.id, user); + register_username(user.name, user.id); + + socket.on('message', msg => { + if (is_command(msg)) { + run_command(msg, user.id, users, io); + return; + } + + io.in(Array.from(socket.rooms)).emit('new message', { + type: 'text-message', + data: msg, + sender: user.name, + }); + }); + + socket.on('set-name', name => { + run_command(`/rename ${name}`, user.id, users, io, true); + }); + + socket.on('disconnect', () => { + kill_username(user.name); + users.delete(user.id); + }); +}); + +app.use('/', Express.static(path.join(__dirname, '../public'))); + +const server_port = parseInt(process.env.PORT) | 4412; +http.listen(server_port, () => { + console.log(`Server started on port ${server_port}.`); +}); + +process.on('SIGINT', () => { + console.log('\nShutting server...'); + users.forEach(u => { + u.socket.disconnect(); + console.log(`Disconnected user ${u.name}.`); + }); + http.close(() => { + console.log('Closed.'); + process.exit(0); + }); +}); \ No newline at end of file diff --git a/src/room.ts b/src/room.ts new file mode 100644 index 0000000..acdb38d --- /dev/null +++ b/src/room.ts @@ -0,0 +1,15 @@ +const room_list = new Array(); + +export function set_room(name: string) { + if (!check_room(name)) { + room_list.push(name); + } +}; + +export function check_room(name: string) { + return room_list.includes(name); +}; + +export function all_rooms() { + return room_list; +}; diff --git a/src/user.ts b/src/user.ts new file mode 100644 index 0000000..10fdcee --- /dev/null +++ b/src/user.ts @@ -0,0 +1,162 @@ +import { Socket } from 'socket.io'; + +export interface User { + socket: Socket + + id: string + name: string + is_administrator: boolean +}; + +let username_to_id_map = new Map(); + +export function register_username(name: string, id: string) { + if (!validate_username(name)) { + return false; + } + + username_to_id_map.set(name, id); + return true; +}; + +export function kill_username(name: string) { + username_to_id_map.delete(name); +} + +export function validate_username(name: string) { + return !username_to_id_map.has(name) && /^[a-zA-Z0-9_][a-zA-Z0-9_\@\-\.\#]{2,}$/.test(name); +}; + +export function find_user_by_name(name: string) { + return username_to_id_map.get(name); +}; + +function splite_toplevel_concat(filter_string: string) { + let matched = 0; + let buf = ''; + let res: string[] = []; + for (let c of filter_string) { + if (c === '(') { + matched += 1; + } else if (c === ')') { + matched -= 1; + } + + if (c === '+' && matched === 0) { + res.push(buf); + buf = ''; + } else { + buf += c; + } + } + + if (buf !== '') { res.push(buf); } + return res; +} + +export function find_user(filter_string_raw: string, users: Map, owner_id: string): string[] { + const parse_lower = (filter: string) => { + return find_user(filter, users, owner_id); + }; + + // trim spaces (start and end) + const filter_string = filter_string_raw.replace(/(^\s*)|(\s*$)/g, ''); + + const arrayed_map = Array.from(username_to_id_map); + const id_list = arrayed_map.map(v => v[1]); + + const toplevel_concated = splite_toplevel_concat(filter_string); + if (toplevel_concated.length > 1) { + return toplevel_concated.reduce((acc: string[], sub_filter: string): string[] => { + return acc.concat(parse_lower(sub_filter)); + }, []); + } + + if (!filter_string.startsWith('@')) { + const res = find_user_by_name(filter_string); + if (res) { return [res]; } + return []; + } + + if (filter_string === '@1') { return parse_lower('@1(@a)'); } + if (filter_string === '@A') { return parse_lower('@A(@a)'); } + + if (filter_string === '@a') { + return id_list; + } + + if (filter_string === '@o') { + return id_list.filter(id => id !== owner_id); + } + + if (filter_string === '@i') { + return [owner_id]; + } + + if (/^\@1\(.*\)$/.test(filter_string)) { + const sub_filter = filter_string.match(/^\@1\((.*)\)$/)[1]; + const res = parse_lower(sub_filter); + return [res[Math.floor(res.length * Math.random())]]; + } + + if (/^\@I\(.*\)$/.test(filter_string)) { + const sub_filter = filter_string.match(/^\@I\((.*)\)$/)[1]; + if (users.get(sub_filter)) { return [sub_filter]; } + return []; + } + + if (/^\@A\(.*\)$/.test(filter_string)) { + const sub_filter = filter_string.match(/^\@A\((.*)\)$/)[1]; + const res = parse_lower(sub_filter); + return res.filter(id => users.get(id).is_administrator); + } + + if (/^\@R\([^\&]*\)\&\(.*\)$/.test(filter_string)) { + const [, regex_filter, sub_filter] = filter_string.match(/^\@R\(([^\&]*)\)\&\((.*)\)$/); + const target_regex = new RegExp(regex_filter); + const sub_res = parse_lower(sub_filter); + return sub_res + .map(id => [users.get(id).name, id]) + .filter(([name,]) => target_regex.test(name)) + .map(([,id]) => id); + } + + if (/^\@r\([^\&]*\)\&\(.*\)$/.test(filter_string)) { + const [, regex_filter, sub_filter] = filter_string.match(/^\@r\(([^\&]*)\)\&\((.*)\)$/); + return parse_lower(`@R(^${regex_filter}$)&(${sub_filter})`); + } + + if (/^\@r\(.*\)$/.test(filter_string)) { + return parse_lower(`${filter_string}&(@a)`); + } + + if (/^\@R\(.*\)$/.test(filter_string)) { + return parse_lower(`${filter_string}&(@a)`); + } + + + if (/^\@-\([^\&]*\)\&\(.*\)$/.test(filter_string)) { + const [, full_expr, sub_expr] = filter_string.match(/^\@-\(([^\&]*)\)\&\((.*)\)$/); + const full_res = parse_lower(full_expr); + const sub_res = parse_lower(sub_expr); + return full_res.filter(id => !sub_res.includes(id)); + } + + return []; +} + + +let admin_passcode: string; +function refreash_admin_passcode() { + admin_passcode = Math.random().toString(); + console.log('Admin passcode is:', admin_passcode); + return admin_passcode; +} +refreash_admin_passcode(); + +export function grant_access(user: User, code: string) { + if (admin_passcode === code) { + user.is_administrator = true; + } +}; +