mirror of
https://github.com/smogon/pokemon-showdown.git
synced 2026-05-05 21:17:43 -05:00
c333cb8aad
This gives commands like !htmlbox and /roomintro a basic validator, to warn about typoes related to mismatched HTML tags. This is NOT intended to be secure (we have a separate sanitizer client-side for that), but is intended to guard against user error only.
482 lines
15 KiB
JavaScript
482 lines
15 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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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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var fs = require('fs');
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/*********************************************************
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* Load command files
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*********************************************************/
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var commands = exports.commands = require('./commands.js').commands;
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// Install plug-in commands
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fs.readdirSync('./chat-plugins').forEach(function (file) {
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if (file.substr(-3) === '.js') Object.merge(commands, require('./chat-plugins/' + file).commands);
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});
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/*********************************************************
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* Parser
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*********************************************************/
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var modlog = exports.modlog = {lobby: fs.createWriteStream('logs/modlog/modlog_lobby.txt', {flags:'a+'}), battle: fs.createWriteStream('logs/modlog/modlog_battle.txt', {flags:'a+'})};
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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) {
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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 (room && user.locked) {
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connection.sendTo(room, "You are locked from talking in chat.");
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return false;
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}
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if (room && user.mutedRooms[room.id]) {
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connection.sendTo(room, "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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if (room.modchat === 'crash') {
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if (!user.can('ignorelimits')) {
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connection.sendTo(room, "Because the server has crashed, you cannot speak in lobby chat.");
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return false;
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}
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} else {
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var 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 (!user.autoconfirmed && (room.auth && room.auth[user.userid] || user.group) === ' ' && room.modchat === 'autoconfirmed') {
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connection.sendTo(room, "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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} else if (Config.groupsranking.indexOf(userGroup) < Config.groupsranking.indexOf(room.modchat)) {
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var groupName = Config.groups[room.modchat].name || room.modchat;
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connection.sendTo(room, "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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}
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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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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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connection.popup("Your message is too long:\n\n" + 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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var 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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connection.popup("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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return Config.chatfilter(message, user, room, connection);
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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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/**
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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
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* if he's muted, will warn him that he's muted, and
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* return false.
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*/
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var parse = exports.parse = function (message, room, user, connection, levelsDeep) {
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var cmd = '', target = '';
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if (!message || !message.trim().length) return;
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if (!levelsDeep) {
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levelsDeep = 0;
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} else {
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if (levelsDeep > MAX_PARSE_RECURSION) {
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return connection.sendTo(room, "Error: Too much recursion");
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}
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}
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if (message.substr(0, 3) === '>> ') {
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// multiline eval
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message = '/eval ' + message.substr(3);
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} else if (message.substr(0, 4) === '>>> ') {
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// multiline eval
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message = '/evalbattle ' + message.substr(4);
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}
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if (message.charAt(0) === '/' && message.charAt(1) !== '/') {
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var spaceIndex = message.indexOf(' ');
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if (spaceIndex > 0) {
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cmd = message.substr(1, spaceIndex - 1);
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target = message.substr(spaceIndex + 1);
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} else {
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cmd = message.substr(1);
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target = '';
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}
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} else if (message.charAt(0) === '!') {
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var spaceIndex = message.indexOf(' ');
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if (spaceIndex > 0) {
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cmd = message.substr(0, spaceIndex);
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target = message.substr(spaceIndex + 1);
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} else {
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cmd = message;
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target = '';
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}
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}
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cmd = cmd.toLowerCase();
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var broadcast = false;
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if (cmd.charAt(0) === '!') {
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broadcast = true;
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cmd = cmd.substr(1);
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}
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var namespaces = [];
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var currentCommands = commands;
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var originalMessage = message;
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var commandHandler;
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do {
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commandHandler = currentCommands[cmd];
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if (typeof commandHandler === 'string') {
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// in case someone messed up, don't loop
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commandHandler = currentCommands[commandHandler];
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}
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if (commandHandler && typeof commandHandler === 'object') {
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namespaces.push(cmd);
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var newCmd = target;
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var newTarget = '';
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var spaceIndex = target.indexOf(' ');
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if (spaceIndex > 0) {
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newCmd = target.substr(0, spaceIndex);
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newTarget = target.substr(spaceIndex + 1);
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}
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newCmd = newCmd.toLowerCase();
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var newMessage = message.replace(cmd + (target ? ' ' : ''), '');
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cmd = newCmd;
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target = newTarget;
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message = newMessage;
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currentCommands = commandHandler;
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}
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} while (commandHandler && typeof commandHandler === 'object');
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if (!commandHandler && currentCommands.default) {
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commandHandler = currentCommands.default;
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if (typeof commandHandler === 'string') {
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commandHandler = currentCommands[commandHandler];
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}
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}
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var fullCmd = namespaces.concat(cmd).join(' ');
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if (commandHandler) {
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var context = {
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sendReply: function (data) {
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if (this.broadcasting) {
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room.add(data);
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} else {
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connection.sendTo(room, data);
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}
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},
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sendReplyBox: function (html) {
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this.sendReply('|raw|<div class="infobox">' + html + '</div>');
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},
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popupReply: function (message) {
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connection.popup(message);
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},
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add: function (data) {
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room.add(data);
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},
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send: function (data) {
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room.send(data);
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},
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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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sendModCommand: function (data) {
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for (var i in room.users) {
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var user = room.users[i];
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// hardcoded for performance reasons (this is an inner loop)
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if (user.isStaff || (room.auth && (room.auth[user.userid] || '+') !== '+')) {
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user.sendTo(room, data);
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}
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}
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},
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logEntry: function (data) {
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room.logEntry(data);
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},
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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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logModCommand: function (result) {
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if (!modlog[room.id]) {
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if (room.battle) {
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modlog[room.id] = modlog['battle'];
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} else {
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modlog[room.id] = fs.createWriteStream('logs/modlog/modlog_' + room.id + '.txt', {flags:'a+'});
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}
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}
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modlog[room.id].write('[' + (new Date().toJSON()) + '] (' + room.id + ') ' + result + '\n');
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},
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can: function (permission, target, room) {
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if (!user.can(permission, target, room)) {
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this.sendReply("/" + fullCmd + " - 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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canBroadcast: function (suppressMessage) {
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if (broadcast) {
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var message = this.canTalk(originalMessage);
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if (!message) return false;
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if (!user.can('broadcast', null, room)) {
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connection.sendTo(room, "You need to be voiced to broadcast this command's information.");
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connection.sendTo(room, "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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var normalized = message.toLowerCase().replace(/[^a-z0-9\s!,]/g, '');
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if (room.lastBroadcast === normalized &&
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room.lastBroadcastTime >= Date.now() - BROADCAST_COOLDOWN) {
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connection.sendTo(room, "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|' + user.getIdentity(room.id) + '|' + (suppressMessage || message));
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room.lastBroadcast = normalized;
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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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parse: function (message, inNamespace) {
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if (inNamespace && (message[0] === '/' || message[0] === '!')) {
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message = message[0] + namespaces.concat(message.slice(1)).join(" ");
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}
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return parse(message, room, user, connection, levelsDeep + 1);
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},
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canTalk: function (message, relevantRoom) {
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var innerRoom = (relevantRoom !== undefined) ? relevantRoom : room;
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return canTalk(user, innerRoom, connection, message);
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},
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canHTML: function (html) {
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html = '' + (html || '');
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var images = html.match(/<img\b[^<>]*/ig);
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if (!images) return true;
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for (var 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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this.sendReply('All images must have a width and height attribute');
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return false;
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}
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}
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if (/>here.?</i.test(html) || /click here/i.test(html)) {
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this.sendReply('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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var tags = html.toLowerCase().match(/<\/?(div|a|button|b|i|u|center|font)\b/g);
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if (tags) {
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var stack = [];
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for (var i = 0; i < tags.length; i++) {
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var tag = tags[i];
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if (tag.charAt(1) === '/') {
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if (!stack.length) {
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this.sendReply("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.sendReply("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.sendReply("Missing </" + stack.pop() + ">.");
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return false;
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}
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}
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return true;
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},
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targetUserOrSelf: function (target, exactName) {
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if (!target) {
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this.targetUsername = user.name;
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return 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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getLastIdOf: function (user) {
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if (typeof user === 'string') user = Users.get(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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splitTarget: function (target, exactName) {
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var commaIndex = target.indexOf(',');
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if (commaIndex < 0) {
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var targetUser = Users.get(target, exactName);
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this.targetUser = targetUser;
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this.targetUsername = targetUser ? targetUser.name : target;
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return '';
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}
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var targetUser = Users.get(target.substr(0, commaIndex), exactName);
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if (!targetUser) {
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targetUser = null;
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}
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this.targetUser = targetUser;
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this.targetUsername = targetUser ? targetUser.name : target.substr(0, commaIndex);
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return target.substr(commaIndex + 1).trim();
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}
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};
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var result;
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try {
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result = commandHandler.call(context, target, room, user, connection, cmd, message);
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} catch (err) {
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var stack = err.stack + '\n\n' +
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'Additional information:\n' +
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'user = ' + user.name + '\n' +
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'room = ' + room.id + '\n' +
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'message = ' + originalMessage;
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var fakeErr = {stack: stack};
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if (!require('./crashlogger.js')(fakeErr, 'A chat command')) {
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var ministack = ("" + err.stack).escapeHTML().split("\n").slice(0, 2).join("<br />");
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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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context.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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} else {
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// Check for mod/demod/admin/deadmin/etc depending on the group ids
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for (var g in Config.groups) {
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var groupid = Config.groups[g].id;
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if (cmd === groupid || cmd === 'global' + groupid) {
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return parse('/promote ' + toId(target) + ', ' + g, room, user, connection);
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} else if (cmd === 'de' + groupid || cmd === 'un' + groupid || cmd === 'globalde' + groupid || cmd === 'deglobal' + groupid) {
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return parse('/demote ' + toId(target), room, user, connection);
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} else if (cmd === 'room' + groupid) {
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return parse('/roompromote ' + toId(target) + ', ' + g, room, user, connection);
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} else if (cmd === 'roomde' + groupid || cmd === 'deroom' + groupid || cmd === 'roomun' + groupid) {
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return parse('/roomdemote ' + toId(target), room, user, connection);
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}
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}
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if (message.charAt(0) === '/' && fullCmd) {
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// To guard against command typos, we now emit an error message
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return connection.sendTo(room.id, "The command '/" + fullCmd + "' was unrecognized. To send a message starting with '/" + fullCmd + "', type '//" + fullCmd + "'.");
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}
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}
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if (message.charAt(0) === '/' && message.charAt(1) !== '/') {
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message = '/' + message;
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}
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message = canTalk(user, room, connection, message);
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if (!message) return false;
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if (message.charAt(0) === '/' && message.charAt(1) !== '/') {
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return parse(message, room, user, connection, levelsDeep + 1);
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}
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return message;
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};
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exports.package = {};
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fs.readFile('package.json', function (err, data) {
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if (err) return;
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exports.package = JSON.parse(data);
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});
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exports.uncacheTree = function (root) {
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var uncache = [require.resolve(root)];
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function getFilename(module) {
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return module.filename;
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}
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do {
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var newuncache = [];
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for (var i = 0; i < uncache.length; ++i) {
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if (require.cache[uncache[i]]) {
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newuncache.push.apply(newuncache,
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require.cache[uncache[i]].children.map(getFilename)
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);
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delete require.cache[uncache[i]];
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}
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}
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uncache = newuncache;
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} while (uncache.length > 0);
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};
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