mirror of
https://github.com/smogon/pokemon-showdown.git
synced 2026-05-05 21:17:43 -05:00
a659f6733f
Most images are hosted in places that already support HTTPS, so all we need to do is transparently rewrite them to be protocol-local. For the rest, I don't care enough to enforce HTTPS on them. At least wait for browsers to complain more about it...
610 lines
20 KiB
JavaScript
610 lines
20 KiB
JavaScript
/**
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* Command parser
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* Pokemon Showdown - http://pokemonshowdown.com/
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*
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* This is the command parser. Call it with CommandParser.parse
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* (scroll down to its definition for details)
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*
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* Individual commands are put in:
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* commands.js - "core" commands that shouldn't be modified
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* chat-plugins/ - other commands that can be safely modified
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*
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* The command API is (mostly) documented in chat-plugins/COMMANDS.md
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*
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* @license MIT license
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*/
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/*
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To reload chat commands:
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/hotpatch chat
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*/
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'use strict';
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const MAX_MESSAGE_LENGTH = 300;
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const BROADCAST_COOLDOWN = 20 * 1000;
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const MESSAGE_COOLDOWN = 5 * 60 * 1000;
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const MAX_PARSE_RECURSION = 10;
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const VALID_COMMAND_TOKENS = '/!';
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const BROADCAST_TOKEN = '!';
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const fs = require('fs');
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const path = require('path');
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/*********************************************************
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* Load command files
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*********************************************************/
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let baseCommands = exports.baseCommands = require('./commands.js').commands;
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let commands = exports.commands = Object.clone(baseCommands);
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// Install plug-in commands
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// info always goes first so other plugins can shadow it
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Object.merge(commands, require('./chat-plugins/info.js').commands);
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fs.readdirSync(path.resolve(__dirname, 'chat-plugins')).forEach(function (file) {
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if (file.substr(-3) !== '.js' || file === 'info.js') return;
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Object.merge(commands, require('./chat-plugins/' + file).commands);
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});
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/*********************************************************
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* Modlog
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*********************************************************/
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let modlog = exports.modlog = {
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lobby: fs.createWriteStream(path.resolve(__dirname, 'logs/modlog/modlog_lobby.txt'), {flags:'a+'}),
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battle: fs.createWriteStream(path.resolve(__dirname, 'logs/modlog/modlog_battle.txt'), {flags:'a+'})
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};
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let writeModlog = exports.writeModlog = function (roomid, text) {
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if (!modlog[roomid]) {
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modlog[roomid] = fs.createWriteStream(path.resolve(__dirname, 'logs/modlog/modlog_' + roomid + '.txt'), {flags:'a+'});
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}
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modlog[roomid].write('[' + (new Date().toJSON()) + '] ' + text + '\n');
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};
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/*********************************************************
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* Parser
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*********************************************************/
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/**
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* Can this user talk?
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* Shows an error message if not.
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*/
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function canTalk(user, room, connection, message, targetUser) {
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if (!user.named) {
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connection.popup("You must choose a name before you can talk.");
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return false;
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}
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if (!user.can('bypassall')) {
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if (room && user.locked) {
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this.errorReply("You are locked from talking in chat.");
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return false;
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}
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if (room && room.isMuted(user)) {
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this.errorReply("You are muted and cannot talk in this room.");
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return false;
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}
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if (room && room.modchat) {
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let userGroup = user.group;
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if (room.auth) {
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if (room.auth[user.userid]) {
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userGroup = room.auth[user.userid];
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} else if (room.isPrivate === true) {
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userGroup = ' ';
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}
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}
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if (room.modchat === 'autoconfirmed') {
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if (!user.autoconfirmed && userGroup === ' ') {
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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.");
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return false;
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}
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} else if (Config.groupsranking.indexOf(userGroup) < Config.groupsranking.indexOf(room.modchat) && !user.can('makeroom')) {
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let groupName = Config.groups[room.modchat].name || room.modchat;
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this.errorReply("Because moderated chat is set, you must be of rank " + groupName + " or higher to speak in this room.");
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return false;
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}
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}
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if (room && !(user.userid in room.users)) {
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connection.popup("You can't send a message to this room without being in it.");
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return false;
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}
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}
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if (typeof message === 'string') {
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if (!message) {
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connection.popup("Your message can't be blank.");
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return false;
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}
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if (message.length > MAX_MESSAGE_LENGTH && !user.can('ignorelimits')) {
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this.errorReply("Your message is too long: " + message);
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return false;
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}
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// remove zalgo
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message = message.replace(/[\u0300-\u036f\u0483-\u0489\u064b-\u065f\u0670\u0E31\u0E34-\u0E3A\u0E47-\u0E4E]{3,}/g, '');
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if (room && room.id === 'lobby') {
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let normalized = message.trim();
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if ((normalized === user.lastMessage) &&
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((Date.now() - user.lastMessageTime) < MESSAGE_COOLDOWN)) {
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this.errorReply("You can't send the same message again so soon.");
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return false;
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}
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user.lastMessage = message;
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user.lastMessageTime = Date.now();
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}
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if (Config.chatfilter) {
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/*jshint validthis:true */
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return Config.chatfilter.call(this, message, user, room, connection, targetUser);
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}
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return message;
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}
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return true;
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}
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let Context = exports.Context = (function () {
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function Context(options) {
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this.cmd = options.cmd || '';
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this.cmdToken = options.cmdToken || '';
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this.target = options.target || '';
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this.message = options.message || '';
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this.levelsDeep = options.levelsDeep || 0;
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this.namespaces = options.namespaces || null;
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this.room = options.room || null;
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this.user = options.user || null;
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this.connection = options.connection || null;
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this.targetUserName = '';
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this.targetUser = null;
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}
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Context.prototype.sendReply = function (data) {
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if (this.broadcasting) {
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this.room.add(data);
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} else {
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this.connection.sendTo(this.room, data);
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}
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};
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Context.prototype.errorReply = function (message) {
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if (this.pmTarget) {
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this.connection.send('|pm|' + this.user.getIdentity() + '|' + (this.pmTarget.getIdentity ? this.pmTarget.getIdentity() : ' ' + this.pmTarget) + '|/error ' + message);
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} else {
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this.sendReply('|html|<div class="message-error">' + Tools.escapeHTML(message) + '</div>');
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}
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};
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Context.prototype.sendReplyBox = function (html) {
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this.sendReply('|raw|<div class="infobox">' + html + '</div>');
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};
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Context.prototype.popupReply = function (message) {
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this.connection.popup(message);
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};
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Context.prototype.add = function (data) {
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this.room.add(data);
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};
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Context.prototype.send = function (data) {
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this.room.send(data);
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};
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Context.prototype.privateModCommand = function (data, noLog) {
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this.sendModCommand(data);
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this.logEntry(data);
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this.logModCommand(data);
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};
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Context.prototype.sendModCommand = function (data) {
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let users = this.room.users;
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let auth = this.room.auth;
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for (let i in users) {
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let user = users[i];
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// hardcoded for performance reasons (this is an inner loop)
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if (user.isStaff || (auth && (auth[user.userid] || '+') !== '+')) {
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user.sendTo(this.room, data);
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}
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}
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};
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Context.prototype.logEntry = function (data) {
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this.room.logEntry(data);
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};
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Context.prototype.addModCommand = function (text, logOnlyText) {
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this.add(text);
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this.logModCommand(text + (logOnlyText || ""));
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};
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Context.prototype.logModCommand = function (text) {
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let roomid = (this.room.battle ? 'battle' : this.room.id);
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if (this.room.isPersonal) roomid = 'groupchat';
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writeModlog(roomid, '(' + this.room.id + ') ' + text);
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};
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Context.prototype.globalModlog = function (action, user, text) {
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let buf = "(" + this.room.id + ") " + action + ": ";
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if (typeof user === 'string') {
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buf += "[" + toId(user) + "]";
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} else {
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let userid = this.getLastIdOf(user);
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buf += "[" + userid + "]";
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if (user.autoconfirmed && user.autoconfirmed !== userid) buf += " ac:[" + user.autoconfirmed + "]";
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}
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buf += text;
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writeModlog('global', buf);
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};
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Context.prototype.can = function (permission, target, room) {
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if (!this.user.can(permission, target, room)) {
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this.errorReply(this.cmdToken + this.namespaces.concat(this.cmd).join(" ") + " - Access denied.");
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return false;
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}
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return true;
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};
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Context.prototype.canBroadcast = function (suppressMessage) {
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if (!this.broadcasting && this.cmdToken === BROADCAST_TOKEN) {
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let message = this.canTalk(this.message);
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if (!message) return false;
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if (!this.user.can('broadcast', null, this.room)) {
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this.errorReply("You need to be voiced to broadcast this command's information.");
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this.errorReply("To see it for yourself, use: /" + message.substr(1));
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return false;
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}
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// broadcast cooldown
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let normalized = message.toLowerCase().replace(/[^a-z0-9\s!,]/g, '');
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if (this.room.lastBroadcast === normalized &&
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this.room.lastBroadcastTime >= Date.now() - BROADCAST_COOLDOWN) {
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this.errorReply("You can't broadcast this because it was just broadcast.");
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return false;
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}
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this.add('|c|' + this.user.getIdentity(this.room.id) + '|' + (suppressMessage || message));
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this.room.lastBroadcast = normalized;
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this.room.lastBroadcastTime = Date.now();
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this.broadcasting = true;
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}
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return true;
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};
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Context.prototype.parse = function (message, inNamespace, room) {
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if (inNamespace && this.cmdToken) {
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message = this.cmdToken + this.namespaces.concat(message.slice(1)).join(" ");
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}
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return CommandParser.parse(message, room || this.room, this.user, this.connection, this.levelsDeep + 1);
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};
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Context.prototype.run = function (targetCmd, inNamespace) {
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let commandHandler;
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if (typeof targetCmd === 'function') {
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commandHandler = targetCmd;
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} else if (inNamespace) {
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commandHandler = commands;
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for (let i = 0; i < this.namespaces.length; i++) {
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commandHandler = commandHandler[this.namespaces[i]];
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}
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commandHandler = commandHandler[targetCmd];
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} else {
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commandHandler = commands[targetCmd];
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}
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let result;
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try {
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result = commandHandler.call(this, this.target, this.room, this.user, this.connection, this.cmd, this.message);
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} catch (err) {
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let stack = err.stack + '\n\n' +
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'Additional information:\n' +
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'user = ' + this.user.name + '\n' +
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'room = ' + this.room.id + '\n' +
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'message = ' + this.message;
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let fakeErr = {stack: stack};
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if (!require('./crashlogger.js')(fakeErr, 'A chat command')) {
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let ministack = ("" + err.stack).escapeHTML().split("\n").slice(0, 2).join("<br />");
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if (Rooms.lobby) Rooms.lobby.send('|html|<div class="broadcast-red"><b>POKEMON SHOWDOWN HAS CRASHED:</b> ' + ministack + '</div>');
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} else {
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this.sendReply('|html|<div class="broadcast-red"><b>Pokemon Showdown crashed!</b><br />Don\'t worry, we\'re working on fixing it.</div>');
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}
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}
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if (result === undefined) result = false;
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return result;
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};
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Context.prototype.canTalk = function (message, relevantRoom, targetUser) {
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let innerRoom = (relevantRoom !== undefined) ? relevantRoom : this.room;
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return canTalk.call(this, this.user, innerRoom, this.connection, message, targetUser);
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};
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Context.prototype.canEmbedURI = function (uri, isRelative) {
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if (uri.startsWith('https://')) return uri;
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if (uri.startsWith('//')) return uri;
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if (uri.startsWith('data:')) return uri;
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if (!uri.startsWith('http://')) {
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if (/^[a-z]+\:\/\//.test(uri) || isRelative) {
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return this.errorReply("URIs must begin with 'https://' or 'http://' or 'data:'");
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}
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} else {
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uri = uri.slice(7);
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}
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let slashIndex = uri.indexOf('/');
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let domain = (slashIndex >= 0 ? uri.slice(0, slashIndex) : uri);
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// heuristic that works for all the domains we care about
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let secondLastDotIndex = domain.lastIndexOf('.', domain.length - 5);
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if (secondLastDotIndex >= 0) domain = domain.slice(secondLastDotIndex + 1);
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let approvedDomains = {
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'imgur.com': 1,
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'gyazo.com': 1,
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'puu.sh': 1,
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'rotmgtool.com': 1,
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'pokemonshowdown.com': 1,
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'nocookie.net': 1,
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'blogspot.com': 1,
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'imageshack.us': 1,
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'deviantart.net': 1,
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'pokefans.net': 1
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};
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if (domain in approvedDomains) {
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return '//' + uri;
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}
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if (domain === 'bit.ly') {
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return this.errorReply("Please don't use URL shorteners.");
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}
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// unknown URI, allow HTTP to be safe
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return 'http://' + uri;
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};
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Context.prototype.canHTML = function (html) {
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html = ('' + (html || '')).trim();
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if (!html) return '';
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let images = html.match(/<img\b[^<>]*/ig);
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if (images) {
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if (this.room.isPersonal && !this.user.can('announce')) {
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this.errorReply("Images are not allowed in personal rooms.");
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return false;
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}
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for (let i = 0; i < images.length; i++) {
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if (!/width=([0-9]+|"[0-9]+")/i.test(images[i]) || !/height=([0-9]+|"[0-9]+")/i.test(images[i])) {
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// Width and height are required because most browsers insert the
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// <img> element before width and height are known, and when the
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// image is loaded, this changes the height of the chat area, which
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// messes up autoscrolling.
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this.errorReply('All images must have a width and height attribute');
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return false;
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}
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let match = /src\w*\=\w*"?([^ "]+)(\w*")?/i.exec(images[i]);
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if (match) {
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let uri = this.canEmbedURI(match[1], true);
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if (!uri) return false;
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html = html.slice(0, match.index) + 'src="' + uri + '"' + html.slice(match.index + match[0].length);
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}
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}
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}
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if ((this.room.isPersonal || this.room.isPrivate === true) && !this.user.can('lock') && html.match(/<button /)) {
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this.errorReply('You do not have permission to use buttons in HTML.');
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return false;
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}
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if (/>here.?</i.test(html) || /click here/i.test(html)) {
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this.errorReply('Do not use "click here"');
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return false;
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}
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// check for mismatched tags
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let tags = html.toLowerCase().match(/<\/?(div|a|button|b|i|u|center|font)\b/g);
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if (tags) {
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let stack = [];
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for (let i = 0; i < tags.length; i++) {
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let tag = tags[i];
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if (tag.charAt(1) === '/') {
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if (!stack.length) {
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this.errorReply("Extraneous </" + tag.substr(2) + "> without an opening tag.");
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return false;
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}
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if (tag.substr(2) !== stack.pop()) {
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this.errorReply("Missing </" + tag.substr(2) + "> or it's in the wrong place.");
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return false;
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}
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} else {
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stack.push(tag.substr(1));
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}
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}
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if (stack.length) {
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this.errorReply("Missing </" + stack.pop() + ">.");
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return false;
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}
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}
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return html;
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};
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Context.prototype.targetUserOrSelf = function (target, exactName) {
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if (!target) {
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this.targetUsername = this.user.name;
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this.inputUsername = this.user.name;
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return this.user;
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}
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this.splitTarget(target, exactName);
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return this.targetUser;
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};
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Context.prototype.getLastIdOf = function (user) {
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return (user.named ? user.userid : (Object.keys(user.prevNames).last() || user.userid));
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};
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Context.prototype.splitTarget = function (target, exactName) {
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let commaIndex = target.indexOf(',');
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if (commaIndex < 0) {
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let targetUser = Users.get(target, exactName);
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this.targetUser = targetUser;
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this.inputUsername = target.trim();
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this.targetUsername = targetUser ? targetUser.name : target;
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return '';
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}
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this.inputUsername = target.substr(0, commaIndex);
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let targetUser = Users.get(this.inputUsername, exactName);
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if (targetUser) {
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this.targetUser = targetUser;
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this.targetUsername = this.inputUsername = targetUser.name;
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} else {
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this.targetUser = null;
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this.targetUsername = this.inputUsername;
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}
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return target.substr(commaIndex + 1).trim();
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};
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return Context;
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})();
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/**
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* Command parser
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*
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* Usage:
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* CommandParser.parse(message, room, user, connection)
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*
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* message - the message the user is trying to say
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* room - the room the user is trying to say it in
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* user - the user that sent the message
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* connection - the connection the user sent the message from
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*
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* Returns the message the user should say, or a falsy value which
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* means "don't say anything"
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*
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* Examples:
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* CommandParser.parse("/join lobby", room, user, connection)
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* will make the user join the lobby, and return false.
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*
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* CommandParser.parse("Hi, guys!", room, user, connection)
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* will return "Hi, guys!" if the user isn't muted, or
|
|
* if he's muted, will warn him that he's muted, and
|
|
* return false.
|
|
*/
|
|
let parse = exports.parse = function (message, room, user, connection, levelsDeep) {
|
|
let cmd = '', target = '', cmdToken = '';
|
|
if (!message || !message.trim().length) return;
|
|
if (!levelsDeep) {
|
|
levelsDeep = 0;
|
|
} else {
|
|
if (levelsDeep > MAX_PARSE_RECURSION) {
|
|
return connection.sendTo(room, "Error: Too much recursion");
|
|
}
|
|
}
|
|
|
|
if (message.substr(0, 3) === '>> ') {
|
|
// multiline eval
|
|
message = '/eval ' + message.substr(3);
|
|
} else if (message.substr(0, 4) === '>>> ') {
|
|
// multiline eval
|
|
message = '/evalbattle ' + message.substr(4);
|
|
}
|
|
|
|
if (VALID_COMMAND_TOKENS.includes(message.charAt(0)) && message.charAt(1) !== message.charAt(0)) {
|
|
cmdToken = message.charAt(0);
|
|
let spaceIndex = message.indexOf(' ');
|
|
if (spaceIndex > 0) {
|
|
cmd = message.substr(1, spaceIndex - 1).toLowerCase();
|
|
target = message.substr(spaceIndex + 1);
|
|
} else {
|
|
cmd = message.substr(1).toLowerCase();
|
|
target = '';
|
|
}
|
|
}
|
|
|
|
let namespaces = [];
|
|
let currentCommands = commands;
|
|
let commandHandler;
|
|
|
|
do {
|
|
commandHandler = currentCommands[cmd];
|
|
if (typeof commandHandler === 'string') {
|
|
// in case someone messed up, don't loop
|
|
commandHandler = currentCommands[commandHandler];
|
|
}
|
|
if (commandHandler && typeof commandHandler === 'object') {
|
|
namespaces.push(cmd);
|
|
|
|
let spaceIndex = target.indexOf(' ');
|
|
if (spaceIndex > 0) {
|
|
cmd = target.substr(0, spaceIndex).toLowerCase();
|
|
target = target.substr(spaceIndex + 1);
|
|
} else {
|
|
cmd = target.toLowerCase();
|
|
target = '';
|
|
}
|
|
|
|
currentCommands = commandHandler;
|
|
}
|
|
} while (commandHandler && typeof commandHandler === 'object');
|
|
if (!commandHandler && currentCommands.default) {
|
|
commandHandler = currentCommands.default;
|
|
if (typeof commandHandler === 'string') {
|
|
commandHandler = currentCommands[commandHandler];
|
|
}
|
|
}
|
|
let fullCmd = namespaces.concat(cmd).join(' ');
|
|
|
|
let context = new Context({
|
|
target: target, room: room, user: user, connection: connection, cmd: cmd, message: message,
|
|
namespaces: namespaces, cmdToken: cmdToken, levelsDeep: levelsDeep
|
|
});
|
|
|
|
if (commandHandler) {
|
|
return context.run(commandHandler);
|
|
} else {
|
|
// Check for mod/demod/admin/deadmin/etc depending on the group ids
|
|
for (let g in Config.groups) {
|
|
let groupid = Config.groups[g].id;
|
|
if (cmd === groupid || cmd === 'global' + groupid) {
|
|
return parse('/promote ' + toId(target) + ', ' + g, room, user, connection, levelsDeep + 1);
|
|
} else if (cmd === 'de' + groupid || cmd === 'un' + groupid || cmd === 'globalde' + groupid || cmd === 'deglobal' + groupid) {
|
|
return parse('/demote ' + toId(target), room, user, connection, levelsDeep + 1);
|
|
} else if (cmd === 'room' + groupid) {
|
|
return parse('/roompromote ' + toId(target) + ', ' + g, room, user, connection, levelsDeep + 1);
|
|
} else if (cmd === 'roomde' + groupid || cmd === 'deroom' + groupid || cmd === 'roomun' + groupid) {
|
|
return parse('/roomdemote ' + toId(target), room, user, connection, levelsDeep + 1);
|
|
}
|
|
}
|
|
|
|
if (cmdToken && fullCmd) {
|
|
// To guard against command typos, we now emit an error message
|
|
if (cmdToken === BROADCAST_TOKEN) {
|
|
if (/[a-z0-9]/.test(cmd.charAt(0))) {
|
|
return context.errorReply("The command '" + cmdToken + fullCmd + "' was unrecognized.");
|
|
}
|
|
} else {
|
|
return context.errorReply("The command '" + cmdToken + fullCmd + "' was unrecognized. To send a message starting with '" + cmdToken + fullCmd + "', type '" + cmdToken.repeat(2) + 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;
|
|
}
|
|
}
|
|
}
|
|
|
|
message = canTalk.call(context, user, room, connection, message);
|
|
|
|
return message || false;
|
|
};
|
|
|
|
exports.package = {};
|
|
fs.readFile(path.resolve(__dirname, 'package.json'), function (err, data) {
|
|
if (err) return;
|
|
exports.package = JSON.parse(data);
|
|
});
|
|
|
|
exports.uncacheTree = function (root) {
|
|
let uncache = [require.resolve(root)];
|
|
do {
|
|
let newuncache = [];
|
|
for (let i = 0; i < uncache.length; ++i) {
|
|
if (require.cache[uncache[i]]) {
|
|
newuncache.push.apply(newuncache,
|
|
require.cache[uncache[i]].children.map('id')
|
|
);
|
|
delete require.cache[uncache[i]];
|
|
}
|
|
}
|
|
uncache = newuncache;
|
|
} while (uncache.length > 0);
|
|
};
|