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chat.js
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chat.js
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/**
* Chat
* Pokemon Showdown - http://pokemonshowdown.com/
*
* This handles chat and chat commands sent from users to chatrooms
* and PMs. The main function you're lookoing for is Chat.parse
* (scroll down to its definition for details)
*
* Individual commands are put in:
* chat-commands.js - "core" commands that shouldn't be modified
* chat-plugins/ - other commands that can be safely modified
*
* The command API is (mostly) documented in chat-plugins/COMMANDS.md
*
* @license MIT license
*/
/*
To reload chat commands:
/hotpatch chat
*/
'use strict';
const MAX_MESSAGE_LENGTH = 300;
const BROADCAST_COOLDOWN = 20 * 1000;
const MESSAGE_COOLDOWN = 5 * 60 * 1000;
const MAX_PARSE_RECURSION = 10;
const VALID_COMMAND_TOKENS = '/!';
const BROADCAST_TOKEN = '!';
const FS = require('./fs');
let Chat = module.exports;
// Regex copied from the client
const domainRegex = '[a-z0-9\\-]+(?:[.][a-z0-9\\-]+)*';
const parenthesisRegex = '[(](?:[^\\s()<>&]|&)*[)]';
const linkRegex = new RegExp(
'(?:' +
'(?:' +
// When using www. or http://, allow any-length TLD (like .museum)
'(?:https?://|\\bwww[.])' + domainRegex +
'|\\b' + domainRegex + '[.]' +
// Allow a common TLD, or any 2-3 letter TLD followed by : or /
'(?:com?|org|net|edu|info|us|jp|[a-z]{2,3}(?=[:/]))' +
')' +
'(?:[:][0-9]+)?' +
'\\b' +
'(?:' +
'/' +
'(?:' +
'(?:' +
'[^\\s()&<>]|&|"' +
'|' + parenthesisRegex +
')*' +
// URLs usually don't end with punctuation, so don't allow
// punctuation symbols that probably aren't related to URL.
'(?:' +
'[^\\s`()\\[\\]{}\'".,!?;:&<>*_`^~\\\\]' +
'|' + parenthesisRegex +
')' +
')?' +
')?' +
'|[a-z0-9.]+\\b@' + domainRegex + '[.][a-z]{2,3}' +
')' +
'(?!.*>)',
'ig'
);
const hyperlinkRegex = new RegExp(`(.+)<(.+)>`, 'i');
// Matches U+FE0F and all Emoji_Presentation characters. More details on
// http://www.unicode.org/Public/emoji/5.0/emoji-data.txt
const emojiRegex = /[\u231A\u231B\u23E9-\u23EC\u23F0\u23F3\u25FD\u25FE\u2614\u2615\u2648-\u2653\u267F\u2693\u26A1\u26AA\u26AB\u26BD\u26BE\u26C4\u26C5\u26CE\u26D4\u26EA\u26F2\u26F3\u26F5\u26FA\u26FD\u2705\u270A\u270B\u2728\u274C\u274E\u2753-\u2755\u2757\u2795-\u2797\u27B0\u27BF\u2B1B\u2B1C\u2B50\u2B55\uFE0F\u{1F004}\u{1F0CF}\u{1F18E}\u{1F191}-\u{1F19A}\u{1F1E6}-\u{1F1FF}\u{1F201}\u{1F21A}\u{1F22F}\u{1F232}-\u{1F236}\u{1F238}-\u{1F23A}\u{1F250}\u{1F251}\u{1F300}-\u{1F320}\u{1F32D}-\u{1F335}\u{1F337}-\u{1F37C}\u{1F37E}-\u{1F393}\u{1F3A0}-\u{1F3CA}\u{1F3CF}-\u{1F3D3}\u{1F3E0}-\u{1F3F0}\u{1F3F4}\u{1F3F8}-\u{1F43E}\u{1F440}\u{1F442}-\u{1F4FC}\u{1F4FF}-\u{1F53D}\u{1F54B}-\u{1F54E}\u{1F550}-\u{1F567}\u{1F57A}\u{1F595}\u{1F596}\u{1F5A4}\u{1F5FB}-\u{1F64F}\u{1F680}-\u{1F6C5}\u{1F6CC}\u{1F6D0}-\u{1F6D2}\u{1F6EB}\u{1F6EC}\u{1F6F4}-\u{1F6F8}\u{1F910}-\u{1F93A}\u{1F93C}-\u{1F93E}\u{1F940}-\u{1F945}\u{1F947}-\u{1F94C}\u{1F950}-\u{1F96B}\u{1F980}-\u{1F997}\u{1F9C0}\u{1F9D0}-\u{1F9E6}]/u;
/** @typedef {{token: string, endToken?: string, resolver: (str: string) => string}} Resolver */
/** @type {Resolver[]} */
const formattingResolvers = [
{token: "**", resolver: str => `<b>${str}</b>`},
{token: "__", resolver: str => `<i>${str}</i>`},
{token: "``", resolver: str => `<code>${str}</code>`},
{token: "~~", resolver: str => `<s>${str}</s>`},
{token: "^^", resolver: str => `<sup>${str}</sup>`},
{token: "\\", resolver: str => `<sub>${str}</sub>`},
{token: "<<", endToken: ">>", resolver: str => str.replace(/[a-z0-9-]/g, '').length ? false : `«<a href="${str}" target="_blank">${str}</a>»`},
{token: "[[", endToken: "]]", resolver: str => {
let hl = hyperlinkRegex.exec(str);
if (hl) return `<a href="${hl[2].trim().replace(/^([a-z]*[^a-z:])/g, 'http://$1')}">${hl[1].trim()}</a>`;
let query = str;
let querystr = str;
let split = str.split(':');
if (split.length > 1) {
let opt = toId(split[0]);
query = split.slice(1).join(':').trim();
switch (opt) {
case 'wiki':
case 'wikipedia':
return `<a href="http://en.wikipedia.org/w/index.php?title=Special:Search&search=${encodeURIComponent(query)}" target="_blank">${querystr}</a>`;
case 'yt':
case 'youtube':
query += " site:youtube.com";
querystr = `yt: ${query}`;
break;
case 'pokemon':
case 'item':
return `<psicon title="${query}" ${opt}="${query}" />`;
}
}
return `<a href="http://www.google.com/search?ie=UTF-8&btnI&q=${encodeURIComponent(query)}" target="_blank">${querystr}</a>`;
}},
];
class PatternTester {
// This class sounds like a RegExp
// In fact, one could in theory implement it as a RegExp subclass
// However, ES2016 RegExp subclassing is a can of worms, and it wouldn't allow us
// to tailor the test method for fast command parsing.
constructor() {
/** @type {string[]} */
this.elements = [];
/** @type {Set<string>} */
this.fastElements = new Set();
/** @type {?RegExp} */
this.regexp = null;
}
/**
* @param {string} elem
*/
fastNormalize(elem) {
return elem.slice(0, -1);
}
update() {
const slowElements = this.elements.filter(elem => !this.fastElements.has(this.fastNormalize(elem)));
if (slowElements.length) {
this.regexp = new RegExp('^(' + slowElements.map(elem => '(?:' + elem + ')').join('|') + ')', 'i');
}
}
/**
* @param {string[]} elems
*/
register(...elems) {
for (const elem of elems) {
this.elements.push(elem);
if (/^[^ ^$?|()[\]]+ $/.test(elem)) {
this.fastElements.add(this.fastNormalize(elem));
}
}
this.update();
}
/**
* @param {string} text
*/
test(text) {
const spaceIndex = text.indexOf(' ');
if (this.fastElements.has(spaceIndex >= 0 ? text.slice(0, spaceIndex) : text)) {
return true;
}
if (!this.regexp) return false;
return this.regexp.test(text);
}
}
Chat.multiLinePattern = new PatternTester();
/*********************************************************
* Load command files
*********************************************************/
Chat.baseCommands = undefined;
Chat.commands = undefined;
/*********************************************************
* Load chat filters
*********************************************************/
Chat.filters = [];
Chat.filter = function (message, user, room, connection, targetUser) {
// Chat filters can choose to:
// 1. return false OR null - to not send a user's message
// 2. return an altered string - to alter a user's message
// 3. return undefined to send the original message through
const originalMessage = message;
for (const filter of Chat.filters) {
const output = filter.call(this, message, user, room, connection, targetUser, originalMessage);
if (output !== undefined) message = output;
if (!message) return message;
}
return message;
};
/*********************************************************
* Parser
*********************************************************/
class CommandContext {
/**
* @param {{message: string, room: Room, user: User, connection: Connection, pmTarget?: User, cmd: string, cmdToken: string, target: string, fullCmd: string}} options
*/
constructor(options) {
this.message = options.message || ``;
this.recursionDepth = 0;
// message context
this.room = options.room;
this.user = options.user;
this.connection = options.connection;
this.pmTarget = options.pmTarget;
// command context
this.cmd = options.cmd || '';
this.cmdToken = options.cmdToken || '';
this.target = options.target || ``;
this.fullCmd = options.fullCmd || '';
// target user
this.targetUser = null;
this.targetUsername = "";
this.inputUsername = "";
}
/**
* @param {any} [message]
* @return {any}
*/
parse(message) {
if (message) {
// spawn subcontext
let subcontext = new CommandContext(this);
subcontext.recursionDepth++;
if (subcontext.recursionDepth > MAX_PARSE_RECURSION) {
throw new Error("Too much command recursion");
}
subcontext.message = message;
return subcontext.parse();
}
message = this.message;
let originalRoom = this.room;
if (this.room && !(this.user.userid in this.room.users)) {
this.room = Rooms.global;
}
let giveExp = false;
let commandHandler = this.splitCommand(message);
if (typeof commandHandler === 'function') {
message = this.run(commandHandler);
} else {
if (commandHandler === '!') {
if (originalRoom === Rooms.global) {
return this.popupReply(`You tried use "${message}" as a global command, but it is not a global command.`);
} else if (originalRoom) {
return this.popupReply(`You tried to send "${message}" to the room "${originalRoom.id}" but it failed because you were not in that room.`);
}
return this.errorReply(`The command "${this.cmdToken}${this.fullCmd}" is unavailable in private messages. To send a message starting with "${this.cmdToken}${this.fullCmd}", type "${this.cmdToken}${this.cmdToken}${this.fullCmd}".`);
}
if (this.cmdToken) {
// To guard against command typos, show an error message
if (this.cmdToken === BROADCAST_TOKEN) {
if (/[a-z0-9]/.test(this.cmd.charAt(0))) {
return this.errorReply(`The command "${this.cmdToken}${this.fullCmd}" does not exist.`);
}
} else {
return this.errorReply(`The command "${this.cmdToken}${this.fullCmd}" does not exist. To send a message starting with "${this.cmdToken}${this.fullCmd}", type "${this.cmdToken}${this.cmdToken}${this.fullCmd}".`);
}
} else if (!VALID_COMMAND_TOKENS.includes(message.charAt(0)) && VALID_COMMAND_TOKENS.includes(message.trim().charAt(0))) {
message = message.trim();
if (message.charAt(0) !== BROADCAST_TOKEN) {
message = message.charAt(0) + message;
}
}
if (Date.now() > (this.user.lastMessageTime + 5000)) giveExp = true;
message = this.canTalk(message);
}
// Output the message
if (message && message !== true && typeof message.then !== 'function') {
if (this.pmTarget) {
let noEmotes = message;
let emoticons = SG.parseEmoticons(message);
if (emoticons) {
noEmotes = message;
message = "/html " + emoticons;
}
let buf = `|pm|${this.user.getIdentity()}|${this.pmTarget.getIdentity()}|${message}`;
this.user.send(buf);
if (Users.ShadowBan.checkBanned(this.user)) {
Users.ShadowBan.addMessage(this.user, "Private to " + this.pmTarget.getIdentity(), noEmotes);
} else {
if (this.pmTarget !== this.user) this.pmTarget.send(buf);
}
this.pmTarget.lastPM = this.user.userid;
this.user.lastPM = this.pmTarget.userid;
} else {
let emoticons = SG.parseEmoticons(message);
if (emoticons && !this.room.disableEmoticons) {
if (Users.ShadowBan.checkBanned(this.user)) {
Users.ShadowBan.addMessage(this.user, "To " + this.room.id, message);
if (!SG.ignoreEmotes[this.user.userid]) this.user.sendTo(this.room, (this.room.type === 'chat' ? '|c:|' + (~~(Date.now() / 1000)) + '|' : '|c|') + this.user.getIdentity(this.room.id) + '|/html ' + emoticons);
if (SG.ignoreEmotes[this.user.userid]) this.user.sendTo(this.room, (this.room.type === 'chat' ? '|c:|' + (~~(Date.now() / 1000)) + '|' : '|c|') + this.user.getIdentity(this.room.id) + '|' + message);
this.room.update();
return false;
}
for (let u in this.room.users) {
let curUser = Users(u);
if (!curUser || !curUser.connected) continue;
if (SG.ignoreEmotes[curUser.userid]) {
curUser.sendTo(this.room, (this.room.type === 'chat' ? '|c:|' + (~~(Date.now() / 1000)) + '|' : '|c|') + this.user.getIdentity(this.room.id) + '|' + message);
continue;
}
curUser.sendTo(this.room, (this.room.type === 'chat' ? '|c:|' + (~~(Date.now() / 1000)) + '|' : '|c|') + this.user.getIdentity(this.room.id) + '|/html ' + emoticons);
}
this.room.log.push((this.room.type === 'chat' ? (this.room.type === 'chat' ? '|c:|' + (~~(Date.now() / 1000)) + '|' : '|c|') : '|c|') + this.user.getIdentity(this.room.id) + '|' + message);
this.room.lastUpdate = this.room.log.length;
this.room.messageCount++;
} else {
if (Users.ShadowBan.checkBanned(this.user)) {
Users.ShadowBan.addMessage(this.user, "To " + this.room.id, message);
this.user.sendTo(this.room, (this.room.type === 'chat' ? '|c:|' + (~~(Date.now() / 1000)) + '|' : '|c|') + this.user.getIdentity(this.room.id) + '|' + message);
} else {
this.room.add((this.room.type === 'chat' ? (this.room.type === 'chat' ? '|c:|' + (~~(Date.now() / 1000)) + '|' : '|c|') : '|c|') + this.user.getIdentity(this.room.id) + '|' + message);
this.room.messageCount++;
}
}
//this.room.add(`|c|${this.user.getIdentity(this.room.id)}|${message}`);
}
}
if (this.user.registered && giveExp) SG.addExp(this.user.userid, this.room, 1);
this.update();
return message;
}
/**
* @param {string} message
* @param {boolean} recursing
* @return string
*/
splitCommand(message = this.message, recursing = false) {
this.cmd = '';
this.cmdToken = '';
this.target = '';
if (!message || !message.trim().length) return;
// hardcoded commands
if (message.startsWith(`>> `)) {
message = `/eval ${message.slice(3)}`;
} else if (message.startsWith(`>>> `)) {
message = `/evalbattle ${message.slice(4)}`;
} else if (message.startsWith(`/me`) && /[^A-Za-z0-9 ]/.test(message.charAt(3))) {
message = `/mee ${message.slice(3)}`;
} else if (message.startsWith(`/ME`) && /[^A-Za-z0-9 ]/.test(message.charAt(3))) {
message = `/MEE ${message.slice(3)}`;
}
let cmdToken = message.charAt(0);
if (!VALID_COMMAND_TOKENS.includes(cmdToken)) return;
if (cmdToken === message.charAt(1)) return;
if (cmdToken === BROADCAST_TOKEN && /[^A-Za-z0-9]/.test(message.charAt(1))) return;
let cmd = '',
target = '';
let spaceIndex = message.indexOf(' ');
if (spaceIndex > 0) {
cmd = message.slice(1, spaceIndex).toLowerCase();
target = message.slice(spaceIndex + 1);
} else {
cmd = message.slice(1).toLowerCase();
target = '';
}
let curCommands = Chat.commands;
let commandHandler;
let fullCmd = cmd;
do {
if (curCommands.hasOwnProperty(cmd)) {
commandHandler = curCommands[cmd];
} else {
commandHandler = undefined;
}
if (typeof commandHandler === 'string') {
// in case someone messed up, don't loop
commandHandler = curCommands[commandHandler];
} else if (Array.isArray(commandHandler) && !recursing) {
return this.splitCommand(cmdToken + 'help ' + fullCmd.slice(0, -4), true);
}
if (commandHandler && typeof commandHandler === 'object') {
let spaceIndex = target.indexOf(' ');
if (spaceIndex > 0) {
cmd = target.substr(0, spaceIndex).toLowerCase();
target = target.substr(spaceIndex + 1);
} else {
cmd = target.toLowerCase();
target = '';
}
fullCmd += ' ' + cmd;
curCommands = commandHandler;
}
} while (commandHandler && typeof commandHandler === 'object');
if (!commandHandler && curCommands.default) {
commandHandler = curCommands.default;
if (typeof commandHandler === 'string') {
commandHandler = curCommands[commandHandler];
}
}
if (!commandHandler && !recursing) {
for (let g in Config.groups) {
let groupid = Config.groups[g].id;
target = toId(target);
if (cmd === groupid) {
return this.splitCommand(`/promote ${target}, ${g}`, true);
} else if (cmd === 'global' + groupid) {
return this.splitCommand(`/globalpromote ${target}, ${g}`, true);
} else if (cmd === 'de' + groupid || cmd === 'un' + groupid || cmd === 'globalde' + groupid || cmd === 'deglobal' + groupid) {
return this.splitCommand(`/demote ${target}`, true);
} else if (cmd === 'room' + groupid) {
return this.splitCommand(`/roompromote ${target}, ${g}`, true);
} else if (cmd === 'roomde' + groupid || cmd === 'deroom' + groupid || cmd === 'roomun' + groupid) {
return this.splitCommand(`/roomdemote ${target}`, true);
}
}
}
this.cmd = cmd;
this.cmdToken = cmdToken;
this.target = target;
this.fullCmd = fullCmd;
if (typeof commandHandler === 'function' && (this.pmTarget || this.room === Rooms.global)) {
if (!curCommands['!' + (typeof curCommands[cmd] === 'string' ? curCommands[cmd] : cmd)]) {
return '!';
}
}
return commandHandler;
}
run(commandHandler) {
if (typeof commandHandler === 'string') commandHandler = Chat.commands[commandHandler];
let result;
try {
result = commandHandler.call(this, this.target, this.room, this.user, this.connection, this.cmd, this.message);
} catch (err) {
require('./crashlogger')(err, 'A chat command', {
user: this.user.name,
room: this.room && this.room.id,
pmTarget: this.pmTarget && this.pmTarget.name,
message: this.message,
});
Rooms.global.reportCrash(err);
this.sendReply(`|html|<div class="broadcast-red"><b>Pokemon Showdown crashed!</b><br />Don't worry, we're working on fixing it.</div>`);
}
if (result === undefined) result = false;
return result;
}
checkFormat(room, user, message) {
if (!room) return true;
if (!room.filterStretching && !room.filterCaps && !room.filterEmojis) return true;
if (user.can('bypassall')) return true;
if (room.filterStretching && user.name.match(/(.+?)\1{5,}/i)) {
return this.errorReply(`Your username contains too much stretching, which this room doesn't allow.`);
}
if (room.filterCaps && user.name.match(/[A-Z\s]{6,}/)) {
return this.errorReply(`Your username contains too many capital letters, which this room doesn't allow.`);
}
if (room.filterEmojis && user.name.match(emojiRegex)) {
return this.errorReply(`Your username contains emojis, which this room doesn't allow.`);
}
// Removes extra spaces and null characters
message = message.trim().replace(/[ \u0000\u200B-\u200F]+/g, ' ');
if (room.filterStretching && message.match(/(.+?)\1{7,}/i)) {
return this.errorReply(`Your message contains too much stretching, which this room doesn't allow.`);
}
if (room.filterCaps && message.match(/[A-Z\s]{18,}/)) {
return this.errorReply(`Your message contains too many capital letters, which this room doesn't allow.`);
}
if (room.filterEmojis && message.match(emojiRegex)) {
return this.errorReply(`Your message contains emojis, which this room doesn't allow.`);
}
return true;
}
checkSlowchat(room, user) {
if (!room || !room.slowchat) return true;
let lastActiveSeconds = (Date.now() - user.lastMessageTime) / 1000;
if (lastActiveSeconds < room.slowchat) return false;
return true;
}
checkBanwords(room, message) {
if (!room) return true;
if (!room.banwordRegex) {
if (room.banwords && room.banwords.length) {
room.banwordRegex = new RegExp('(?:\\b|(?!\\w))(?:' + room.banwords.join('|') + ')(?:\\b|\\B(?!\\w))', 'i');
} else {
room.banwordRegex = true;
}
}
if (!message) return true;
if (room.banwordRegex !== true && room.banwordRegex.test(message)) {
return false;
}
return true;
}
checkGameFilter() {
if (!this.room || !this.room.game || !this.room.game.onChatMessage) return false;
return this.room.game.onChatMessage(this.message);
}
pmTransform(message) {
let prefix = `|pm|${this.user.getIdentity()}|${this.pmTarget.getIdentity()}|`;
return message.split('\n').map(message => {
if (message.startsWith('||')) {
return prefix + '/text ' + message.slice(2);
} else if (message.startsWith('|html|')) {
return prefix + '/raw ' + message.slice(6);
} else if (message.startsWith('|raw|')) {
return prefix + '/raw ' + message.slice(5);
} else if (message.startsWith('|c~|')) {
return prefix + message.slice(4);
} else if (message.startsWith('|c|~|/')) {
return prefix + message.slice(5);
}
return prefix + '/text ' + message;
}).join('\n');
}
sendReply(data) {
if (this.broadcasting) {
// broadcasting
if (this.pmTarget) {
data = this.pmTransform(data);
this.user.send(data);
if (this.pmTarget !== this.user) this.pmTarget.send(data);
} else {
this.room.add(data);
}
} else {
// not broadcasting
if (this.pmTarget) {
data = this.pmTransform(data);
this.connection.send(data);
} else {
this.connection.sendTo(this.room, data);
}
}
}
errorReply(message) {
if (this.pmTarget) {
let prefix = '|pm|' + this.user.getIdentity() + '|' + this.pmTarget.getIdentity() + '|/error ';
this.connection.send(prefix + message.replace(/\n/g, prefix));
} else {
this.sendReply('|html|<div class="message-error">' + Chat.escapeHTML(message).replace(/\n/g, '<br />') + '</div>');
}
}
addBox(html) {
this.add('|html|<div class="infobox">' + html + '</div>');
}
sendReplyBox(html) {
this.sendReply('|html|<div class="infobox">' + html + '</div>');
}
popupReply(message) {
this.connection.popup(message);
}
add(data) {
if (this.pmTarget) {
data = this.pmTransform(data);
this.user.send(data);
if (this.pmTarget !== this.user) this.pmTarget.send(data);
return;
}
this.room.add(data);
}
send(data) {
if (this.pmTarget) {
data = this.pmTransform(data);
this.user.send(data);
if (this.pmTarget !== this.user) this.pmTarget.send(data);
return;
}
this.room.send(data);
}
sendModCommand(data) {
this.room.sendModCommand(data);
}
privateModCommand(data, logOnlyText) {
this.room.sendModCommand(data);
this.logEntry(data);
this.room.modlog(data + (logOnlyText || ""));
}
globalModlog(action, user, text) {
let buf = "(" + this.room.id + ") " + action + ": ";
if (typeof user === 'string') {
buf += "[" + toId(user) + "]";
} else {
let userid = user.getLastId();
buf += "[" + userid + "]";
if (user.autoconfirmed && user.autoconfirmed !== userid) buf += " ac:[" + user.autoconfirmed + "]";
}
buf += text;
Rooms.global.modlog(buf);
}
logEntry(data) {
if (this.pmTarget) return;
this.room.logEntry(data);
}
addModCommand(text, logOnlyText) {
this.room.addLogMessage(this.user, text);
this.room.modlog(text + (logOnlyText || ""));
}
logModCommand(text) {
this.room.modlog(text);
}
update() {
if (this.room) this.room.update();
}
can(permission, target, room) {
if (!this.user.can(permission, target, room)) {
this.errorReply(this.cmdToken + this.fullCmd + " - Access denied.");
return false;
}
return true;
}
canBroadcast(suppressMessage) {
if (!this.broadcasting && this.cmdToken === BROADCAST_TOKEN) {
let message = this.canTalk(suppressMessage || this.message);
if (!message) return false;
if (!this.pmTarget && !this.user.can('broadcast', null, this.room)) {
this.errorReply("You need to be voiced to broadcast this command's information.");
this.errorReply("To see it for yourself, use: /" + this.message.substr(1));
return false;
}
if (Users.ShadowBan.checkBanned(this.user)) {
Users.ShadowBan.addMessage(this.user, "To " + this.room.id, message);
this.user.sendTo(this.room, (this.room.type === 'chat' ? '|c:|' + (~~(Date.now() / 1000)) + '|' : '|c|') + this.user.getIdentity(this.room.id) + '|' + message);
this.parse('/' + this.message.substr(1));
return false;
}
// broadcast cooldown
let broadcastMessage = message.toLowerCase().replace(/[^a-z0-9\s!,]/g, '');
if (this.room && this.room.lastBroadcast === this.broadcastMessage &&
this.room.lastBroadcastTime >= Date.now() - BROADCAST_COOLDOWN) {
this.errorReply("You can't broadcast this because it was just broadcasted.");
return false;
}
this.message = message;
this.broadcastMessage = broadcastMessage;
}
return true;
}
runBroadcast(suppressMessage) {
if (this.broadcasting || this.cmdToken !== BROADCAST_TOKEN) {
// Already being broadcast, or the user doesn't intend to broadcast.
return true;
}
if (!this.broadcastMessage) {
// Permission hasn't been checked yet. Do it now.
if (!this.canBroadcast(suppressMessage)) return false;
}
if (this.pmTarget) {
this.add('|c~|' + (suppressMessage || this.message));
} else {
this.add('|c|' + this.user.getIdentity(this.room.id) + '|' + (suppressMessage || this.message));
}
if (!this.pmTarget) {
this.room.lastBroadcast = this.broadcastMessage;
this.room.lastBroadcastTime = Date.now();
}
this.broadcasting = true;
return true;
}
canTalk(message, room, targetUser) {
if (room === undefined) room = this.room;
if (targetUser === undefined && this.pmTarget) {
room = undefined;
targetUser = this.pmTarget;
}
let user = this.user;
let connection = this.connection;
if (room && room.id === 'global') {
// should never happen
// console.log(`Command tried to write to global: ${user.name}: ${message}`);
return false;
}
if (!user.named) {
connection.popup(`You must choose a name before you can talk.`);
return false;
}
if (!user.can('bypassall')) {
let lockType = (user.namelocked ? `namelocked` : user.locked ? `locked` : ``);
let lockExpiration = Punishments.checkLockExpiration(user.namelocked || user.locked);
if (room) {
if (lockType) {
this.errorReply(`You are ${lockType} and can't talk in chat. ${lockExpiration}`);
return false;
}
if (room.isMuted(user)) {
this.errorReply(`You are muted and cannot talk in this room.`);
return false;
}
if (room.modchat && !user.authAtLeast(room.modchat, room)) {
if (room.modchat === 'autoconfirmed') {
this.errorReply(`Because moderated chat is set, your account must be at least one week old and you must have won at least one ladder game to speak in this room.`);
return false;
}
const groupName = Config.groups[room.modchat] && Config.groups[room.modchat].name || room.modchat;
this.errorReply(`Because moderated chat is set, you must be of rank ${groupName} or higher to speak in this room.`);
return false;
}
if (!(user.userid in room.users)) {
connection.popup("You can't send a message to this room without being in it.");
return false;
}
}
if (targetUser) {
if (lockType && !targetUser.can('lock')) {
return this.errorReply(`You are ${lockType} and can only private message members of the global moderation team (users marked by @ or above in the Help room). ${lockExpiration}`);
}
if (targetUser.locked && !user.can('lock')) {
return this.errorReply(`The user "${targetUser.name}" is locked and cannot be PMed.`);
}
if (Config.pmmodchat && !user.authAtLeast(Config.pmmodchat) && !targetUser.canPromote(user.group, Config.pmmodchat)) {
let groupName = Config.groups[Config.pmmodchat] && Config.groups[Config.pmmodchat].name || Config.pmmodchat;
return this.errorReply(`On this server, you must be of rank ${groupName} or higher to PM users.`);
}
if (targetUser.ignorePMs && targetUser.ignorePMs !== user.group && !user.can('lock')) {
if (!targetUser.can('lock')) {
return this.errorReply(`This user is blocking private messages right now.`);
} else if (targetUser.can('roomowner')) {
return this.errorReply(`This ` + (targetUser.can('bypassall') ? `admin` : `leader`) + ` is too busy to answer private messages right now. Please contact a different staff member.`);
}
}
if (user.ignorePMs && user.ignorePMs !== targetUser.group && !targetUser.can('lock')) {
return this.errorReply(`You are blocking private messages right now.`);
}
}
}
if (typeof message === 'string') {
if (!message) {
connection.popup("Your message can't be blank.");
return false;
}
let length = message.length;
length += 10 * message.replace(/[^\ufdfd]*/g, '').length;
if (length > MAX_MESSAGE_LENGTH && !user.can('ignorelimits')) {
this.errorReply("Your message is too long: " + message);
return false;
}
// remove zalgo
message = message.replace(/[\u0300-\u036f\u0483-\u0489\u0610-\u0615\u064B-\u065F\u0670\u06D6-\u06DC\u06DF-\u06ED\u0E31\u0E34-\u0E3A\u0E47-\u0E4E]{3,}/g, '');
if (/[\u239b-\u23b9]/.test(message)) {
this.errorReply("Your message contains banned characters.");
return false;
}
if (!this.checkFormat(room, user, message)) {
return false;
}
if (!this.checkSlowchat(room, user) && !user.can('mute', null, room)) {
this.errorReply("This room has slow-chat enabled. You can only talk once every " + room.slowchat + " seconds.");
return false;
}
if (!this.checkBanwords(room, user.name) && !user.can('bypassall')) {
this.errorReply(`Your username contains a phrase banned by this room.`);
return false;
}
if (!this.checkBanwords(room, message) && !user.can('mute', null, room)) {
this.errorReply("Your message contained banned words.");
return false;
}
let gameFilter = this.checkGameFilter();
if (gameFilter && !user.can('bypassall')) {
this.errorReply(gameFilter);
return false;
}
if (room) {
let normalized = message.trim();
if ((room.id === 'lobby' || room.id === 'help') && (normalized === user.lastMessage) &&
((Date.now() - user.lastMessageTime) < MESSAGE_COOLDOWN)) {
this.errorReply("You can't send the same message again so soon.");
return false;
}
user.lastMessage = message;
user.lastMessageTime = Date.now();
}
if (Chat.filters.length) {
return Chat.filter.call(this, message, user, room, connection, targetUser);
}
return message;
}
return true;
}
canEmbedURI(uri, isRelative) {
if (uri.startsWith('https://')) return uri;
if (uri.startsWith('//')) return uri;
if (uri.startsWith('data:')) return uri;
if (!uri.startsWith('http://')) {
if (/^[a-z]+:\/\//.test(uri) || isRelative) {
return this.errorReply("URIs must begin with 'https://' or 'http://' or 'data:'");
}
} else {
uri = uri.slice(7);
}
let slashIndex = uri.indexOf('/');
let domain = (slashIndex >= 0 ? uri.slice(0, slashIndex) : uri);
// heuristic that works for all the domains we care about
let secondLastDotIndex = domain.lastIndexOf('.', domain.length - 5);
if (secondLastDotIndex >= 0) domain = domain.slice(secondLastDotIndex + 1);
let approvedDomains = {
'imgur.com': 1,
'gyazo.com': 1,
'puu.sh': 1,
'rotmgtool.com': 1,
'pokemonshowdown.com': 1,
'nocookie.net': 1,
'blogspot.com': 1,
'imageshack.us': 1,
'deviantart.net': 1,
'd.pr': 1,
'pokefans.net': 1,
};
if (domain in approvedDomains) {
return '//' + uri;
}
if (domain === 'bit.ly') {
return this.errorReply("Please don't use URL shorteners.");
}
// unknown URI, allow HTTP to be safe
return 'http://' + uri;
}
canHTML(html) {
html = ('' + (html || '')).trim();
if (!html) return '';
let images = /<img\b[^<>]*/ig;
let match;
while ((match = images.exec(html))) {
if (this.room.isPersonal && !this.user.can('announce')) {
this.errorReply("Images are not allowed in personal rooms.");
return false;
}
if (!/width=([0-9]+|"[0-9]+")/i.test(match[0]) || !/height=([0-9]+|"[0-9]+")/i.test(match[0])) {
// Width and height are required because most browsers insert the
// <img> element before width and height are known, and when the
// image is loaded, this changes the height of the chat area, which
// messes up autoscrolling.
this.errorReply('All images must have a width and height attribute');
return false;
}
let srcMatch = /src\s*=\s*"?([^ "]+)(\s*")?/i.exec(match[0]);
if (srcMatch) {
let uri = this.canEmbedURI(srcMatch[1], true);
if (!uri) return false;
html = html.slice(0, match.index + srcMatch.index) + 'src="' + uri + '"' + html.slice(match.index + srcMatch.index + srcMatch[0].length);
// lastIndex is inaccurate since html was changed
images.lastIndex = match.index + 11;
}
}
if ((this.room.isPersonal || this.room.isPrivate === true) && !this.user.can('lock') && html.replace(/\s*style\s*=\s*"?[^"]*"\s*>/g, '>').match(/<button[^>]/)) {
this.errorReply('You do not have permission to use scripted buttons in HTML.');
this.errorReply('If you just want to link to a room, you can do this: <a href="/roomid"><button>button contents</button></a>');
return false;
}
if (/>here.?</i.test(html) || /click here/i.test(html)) {
this.errorReply('Do not use "click here"');
return false;
}
// check for mismatched tags
let tags = html.toLowerCase().match(/<\/?(div|a|button|b|strong|em|i|u|center|font|marquee|blink|details|summary|code|table|td|tr)\b/g);
if (tags) {
let stack = [];
for (const tag of tags) {
if (tag.charAt(1) === '/') {
if (!stack.length) {
this.errorReply("Extraneous </" + tag.substr(2) + "> without an opening tag.");
return false;
}
if (tag.substr(2) !== stack.pop()) {
this.errorReply("Missing </" + tag.substr(2) + "> or it's in the wrong place.");
return false;
}
} else {
stack.push(tag.substr(1));
}
}
if (stack.length) {
this.errorReply("Missing </" + stack.pop() + ">.");
return false;
}
}
return html;
}
targetUserOrSelf(target, exactName) {
if (!target) {
this.targetUsername = this.user.name;
this.inputUsername = this.user.name;
return this.user;
}
this.splitTarget(target, exactName);
return this.targetUser;
}
splitOne(target) {
let commaIndex = target.indexOf(',');
if (commaIndex < 0) {
return [target, ''];
}
return [target.substr(0, commaIndex), target.substr(commaIndex + 1).trim()];
}
splitTarget(target, exactName) {
let [name, rest] = this.splitOne(target);
this.targetUser = Users.get(name, exactName);
this.inputUsername = name.trim();
this.targetUsername = this.targetUser ? this.targetUser.name : this.inputUsername;
return rest;
}
splitTargetText(target) {
let [first, rest] = this.splitOne(target);
this.targetUsername = first.trim();
return rest.trim();
}
}
Chat.CommandContext = CommandContext;
/**
* Command parser
*
* Usage:
* Chat.parse(message, room, user, connection)
*
* Parses the message. If it's a command, the command is executed, if
* not, it's displayed directly in the room.
*
* Examples:
* Chat.parse("/join lobby", room, user, connection)
* will make the user join the lobby.
*
* Chat.parse("Hi, guys!", room, user, connection)
* will return "Hi, guys!" if the user isn't muted, or
* if he's muted, will warn him that he's muted.
*
* The return value is the return value of the command handler, if any,
* or the message, if there wasn't a command. This value could be a success
* or failure (few commands report these) or a Promise for when the command
* is done executing, if it's not currently done.
*
* @param {string} message - the message the user is trying to say
* @param {Room} room - the room the user is trying to say it in
* @param {User} user - the user that sent the message
* @param {Connection} connection - the connection the user sent the message from
*/
Chat.parse = function (message, room, user, connection) {
Chat.loadPlugins();
let context = new CommandContext({message, room, user, connection});
return context.parse();
};
Chat.package = {};
Chat.uncacheTree = function (root) {
let uncache = [require.resolve(root)];
do {
let newuncache = [];