sync/lib/channel/chat.js

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var Config = require("../config");
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var User = require("../user");
var XSS = require("../xss");
var ChannelModule = require("./module");
var util = require("../utilities");
var Flags = require("../flags");
var url = require("url");
const SHADOW_TAG = "[shadow]";
const LINK = /(\w+:\/\/(?:[^:\/\[\]\s]+|\[[0-9a-f:]+\])(?::\d+)?(?:\/[^\/\s]*)*)/ig;
const TYPE_CHAT = {
msg: "string",
meta: "object,optional"
};
const TYPE_PM = {
msg: "string",
to: "string",
meta: "object,optional"
};
function ChatModule(channel) {
ChannelModule.apply(this, arguments);
this.buffer = [];
this.muted = new util.Set();
this.commandHandlers = {};
/* Default commands */
this.registerCommand("/me", this.handleCmdMe.bind(this));
this.registerCommand("/sp", this.handleCmdSp.bind(this));
this.registerCommand("/say", this.handleCmdSay.bind(this));
this.registerCommand("/shout", this.handleCmdSay.bind(this));
this.registerCommand("/clear", this.handleCmdClear.bind(this));
this.registerCommand("/a", this.handleCmdAdminflair.bind(this));
this.registerCommand("/afk", this.handleCmdAfk.bind(this));
this.registerCommand("/mute", this.handleCmdMute.bind(this));
this.registerCommand("/smute", this.handleCmdSMute.bind(this));
this.registerCommand("/unmute", this.handleCmdUnmute.bind(this));
this.registerCommand("/unsmute", this.handleCmdUnmute.bind(this));
}
ChatModule.prototype = Object.create(ChannelModule.prototype);
ChatModule.prototype.load = function (data) {
this.buffer = [];
this.muted = new util.Set();
if ("chatbuffer" in data) {
for (var i = 0; i < data.chatbuffer.length; i++) {
this.buffer.push(data.chatbuffer[i]);
}
}
if ("chatmuted" in data) {
for (var i = 0; i < data.chatmuted.length; i++) {
this.muted.add(data.chatmuted[i]);
}
}
};
ChatModule.prototype.save = function (data) {
data.chatbuffer = this.buffer;
data.chatmuted = Array.prototype.slice.call(this.muted);
};
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ChatModule.prototype.packInfo = function (data, isAdmin) {
data.chat = Array.prototype.slice.call(this.buffer);
};
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ChatModule.prototype.onUserPostJoin = function (user) {
var self = this;
user.waitFlag(Flags.U_LOGGED_IN, function () {
var muteperm = self.channel.modules.permissions.permissions.mute;
if (self.isShadowMuted(user.getName())) {
user.setFlag(Flags.U_SMUTED | Flags.U_MUTED);
self.channel.sendUserMeta(self.channel.users, user, muteperm);
} else if (self.isMuted(user.getName())) {
user.setFlag(Flags.U_MUTED);
self.channel.sendUserMeta(self.channel.users, user, muteperm);
}
});
user.socket.typecheckedOn("chatMsg", TYPE_CHAT, this.handleChatMsg.bind(this, user));
user.socket.typecheckedOn("pm", TYPE_PM, this.handlePm.bind(this, user));
this.buffer.forEach(function (msg) {
user.socket.emit("chatMsg", msg);
});
};
ChatModule.prototype.isMuted = function (name) {
return this.muted.contains(name.toLowerCase()) ||
this.muted.contains(SHADOW_TAG + name.toLowerCase());
};
ChatModule.prototype.mutedUsers = function () {
var self = this;
return self.channel.users.filter(function (u) {
return self.isMuted(u.getName());
});
};
ChatModule.prototype.isShadowMuted = function (name) {
return this.muted.contains(SHADOW_TAG + name.toLowerCase());
};
ChatModule.prototype.shadowMutedUsers = function () {
var self = this;
return self.channel.users.filter(function (u) {
return self.isShadowMuted(u.getName());
});
};
ChatModule.prototype.handleChatMsg = function (user, data) {
var self = this;
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if (!this.channel || !this.channel.modules.permissions.canChat(user)) {
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return;
}
// Limit to 240 characters
data.msg = data.msg.substring(0, 240);
// If channel doesn't permit them, strip ASCII control characters
if (!this.channel.modules.options ||
!this.channel.modules.options.get("allow_ascii_control")) {
data.msg = data.msg.replace(/[\x00-\x1f]+/g, " ");
}
// Disallow blankposting
if (!data.msg.trim()) {
return;
}
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if (!user.is(Flags.U_LOGGED_IN)) {
return;
}
var meta = {};
data.meta = data.meta || {};
if (user.account.effectiveRank >= 2) {
if ("modflair" in data.meta && data.meta.modflair === user.account.effectiveRank) {
meta.modflair = data.meta.modflair;
}
}
data.meta = meta;
this.channel.checkModules("onUserPreChat", [user, data], function (err, result) {
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if (result === ChannelModule.PASSTHROUGH) {
self.processChatMsg(user, data);
}
});
};
ChatModule.prototype.handlePm = function (user, data) {
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if (!this.channel) {
return;
}
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if (!user.is(Flags.U_LOGGED_IN)) {
return user.socket.emit("errorMsg", {
msg: "You must be signed in to send PMs"
});
}
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if (data.msg.match(Config.get("link-domain-blacklist-regex"))) {
this.channel.logger.log(user.displayip + " (" + user.getName() + ") was kicked for " +
"blacklisted domain");
user.kick();
this.sendModMessage(user.getName() + " was kicked: blacklisted domain in " +
"private message", 2);
return;
}
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var reallyTo = data.to;
data.to = data.to.toLowerCase();
if (data.to === user.getLowerName()) {
user.socket.emit("errorMsg", {
msg: "You can't PM yourself!"
});
return;
}
if (!util.isValidUserName(data.to)) {
user.socket.emit("errorMsg", {
msg: "PM failed: " + data.to + " isn't a valid username."
});
return;
}
var msg = data.msg.substring(0, 240);
var to = null;
for (var i = 0; i < this.channel.users.length; i++) {
if (this.channel.users[i].getLowerName() === data.to) {
to = this.channel.users[i];
break;
}
}
if (!to) {
user.socket.emit("errorMsg", {
msg: "PM failed: " + data.to + " isn't connected to this channel."
});
return;
}
var meta = {};
data.meta = data.meta || {};
if (user.rank >= 2) {
if ("modflair" in data.meta && data.meta.modflair === user.rank) {
meta.modflair = data.meta.modflair;
}
}
if (msg.indexOf(">") === 0) {
meta.addClass = "greentext";
}
data.meta = meta;
var msgobj = this.formatMessage(user.getName(), data);
msgobj.to = to.getName();
to.socket.emit("pm", msgobj);
user.socket.emit("pm", msgobj);
};
ChatModule.prototype.processChatMsg = function (user, data) {
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if (data.msg.match(Config.get("link-domain-blacklist-regex"))) {
this.channel.logger.log(user.displayip + " (" + user.getName() + ") was kicked for " +
"blacklisted domain");
user.kick();
this.sendModMessage(user.getName() + " was kicked: blacklisted domain in " +
"chat message", 2);
return;
}
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if (data.msg.indexOf("/afk") === -1) {
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user.setAFK(false);
}
var msgobj = this.formatMessage(user.getName(), data);
if (this.channel.modules.options &&
this.channel.modules.options.get("chat_antiflood") &&
user.account.effectiveRank < 2) {
var antiflood = this.channel.modules.options.get("chat_antiflood_params");
if (user.chatLimiter.throttle(antiflood)) {
user.socket.emit("cooldown", 1000 / antiflood.sustained);
return;
}
}
if (user.is(Flags.U_SMUTED)) {
this.shadowMutedUsers().forEach(function (u) {
u.socket.emit("chatMsg", msgobj);
});
msgobj.meta.shadow = true;
this.channel.moderators().forEach(function (u) {
u.socket.emit("chatMsg", msgobj);
});
return;
} else if (user.is(Flags.U_MUTED)) {
user.socket.emit("noflood", {
action: "chat",
msg: "You have been muted on this channel."
});
return;
}
if (data.msg.indexOf("/") === 0) {
var space = data.msg.indexOf(" ");
var cmd;
if (space < 0) {
cmd = data.msg.substring(1);
} else {
cmd = data.msg.substring(1, space);
}
if (cmd in this.commandHandlers) {
this.commandHandlers[cmd](user, data.msg, data.meta);
} else {
this.sendMessage(msgobj);
}
} else {
if (data.msg.indexOf(">") === 0) {
msgobj.meta.addClass = "greentext";
}
this.sendMessage(msgobj);
}
};
ChatModule.prototype.formatMessage = function (username, data) {
var msg = XSS.sanitizeText(data.msg);
if (this.channel.modules.filters) {
msg = this.filterMessage(msg);
}
var obj = {
username: username,
msg: msg,
meta: data.meta,
time: Date.now()
};
return obj;
};
const link = /(\w+:\/\/(?:[^:\/\[\]\s]+|\[[0-9a-f:]+\])(?::\d+)?(?:\/[^\/\s]*)*)/ig;
ChatModule.prototype.filterMessage = function (msg) {
var filters = this.channel.modules.filters.filters;
var chan = this.channel;
var parts = msg.split(link);
var convertLinks = this.channel.modules.options.get("enable_link_regex");
for (var j = 0; j < parts.length; j++) {
/* substring is a URL */
if (convertLinks && parts[j].match(link)) {
var original = parts[j];
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parts[j] = filters.filter(parts[j], true);
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/* no filters changed the URL, apply link filter */
if (parts[j] === original) {
parts[j] = url.format(url.parse(parts[j]));
parts[j] = parts[j].replace(link, "<a href=\"$1\" target=\"_blank\">$1</a>");
}
} else {
/* substring is not a URL */
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parts[j] = filters.filter(parts[j], false);
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}
}
msg = parts.join("");
/* Anti-XSS */
return XSS.sanitizeHTML(msg);
};
ChatModule.prototype.sendModMessage = function (msg, minrank) {
if (isNaN(minrank)) {
minrank = 2;
}
var msgobj = {
username: "[server]",
msg: msg,
meta: {
addClass: "server-whisper",
addClassToNameAndTimestamp: true
},
time: Date.now()
};
this.channel.users.forEach(function (u) {
if (u.account.effectiveRank >= minrank) {
u.socket.emit("chatMsg", msgobj);
}
});
};
ChatModule.prototype.sendMessage = function (msgobj) {
this.channel.broadcastAll("chatMsg", msgobj);
this.buffer.push(msgobj);
if (this.buffer.length > 15) {
this.buffer.shift();
}
this.channel.logger.log("<" + msgobj.username + (msgobj.meta.addClass ?
"." + msgobj.meta.addClass : "") +
"> " + XSS.decodeText(msgobj.msg));
};
ChatModule.prototype.registerCommand = function (cmd, cb) {
cmd = cmd.replace(/^\//, "");
this.commandHandlers[cmd] = cb;
};
/**
* == Default commands ==
*/
ChatModule.prototype.handleCmdMe = function (user, msg, meta) {
meta.addClass = "action";
meta.action = true;
var args = msg.split(" ");
args.shift();
this.processChatMsg(user, { msg: args.join(" "), meta: meta });
};
ChatModule.prototype.handleCmdSp = function (user, msg, meta) {
meta.addClass = "spoiler";
var args = msg.split(" ");
args.shift();
this.processChatMsg(user, { msg: args.join(" "), meta: meta });
};
ChatModule.prototype.handleCmdSay = function (user, msg, meta) {
if (user.account.effectiveRank < 1.5) {
return;
}
meta.addClass = "shout";
meta.addClassToNameAndTimestamp = true;
meta.forceShowName = true;
var args = msg.split(" ");
args.shift();
this.processChatMsg(user, { msg: args.join(" "), meta: meta });
};
ChatModule.prototype.handleCmdClear = function (user, msg, meta) {
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if (!this.channel.modules.permissions.canClearChat(user)) {
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return;
}
this.buffer = [];
this.channel.broadcastAll("clearchat");
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this.channel.logger.log("[mod] " + user.getName() + " used /clear");
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};
ChatModule.prototype.handleCmdAdminflair = function (user, msg, meta) {
if (user.account.globalRank < 255) {
return;
}
var args = msg.split(" ");
args.shift();
var superadminflair = {
labelclass: "label-danger",
icon: "glyphicon-globe"
};
var cargs = [];
args.forEach(function (a) {
if (a.indexOf("!icon-") === 0) {
superadminflair.icon = "glyph" + a.substring(1);
} else if (a.indexOf("!label-") === 0) {
superadminflair.labelclass = a.substring(1);
} else {
cargs.push(a);
}
});
meta.superadminflair = superadminflair;
meta.forceShowName = true;
this.processChatMsg(user, { msg: cargs.join(" "), meta: meta });
};
ChatModule.prototype.handleCmdAfk = function (user, msg, meta) {
user.setAFK(!user.is(Flags.U_AFK));
};
ChatModule.prototype.handleCmdMute = function (user, msg, meta) {
if (!this.channel.modules.permissions.canMute(user)) {
return;
}
var muteperm = this.channel.modules.permissions.permissions.mute;
var args = msg.split(" ");
args.shift(); /* shift off /mute */
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var name = args.shift();
if (typeof name !== "string") {
user.socket.emit("errorMsg", {
msg: "/mute requires a target name"
});
return;
}
name = name.toLowerCase();
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var target;
for (var i = 0; i < this.channel.users.length; i++) {
if (this.channel.users[i].getLowerName() === name) {
target = this.channel.users[i];
break;
}
}
if (!target) {
user.socket.emit("errorMsg", {
msg: "/mute target " + name + " not present in channel."
});
return;
}
if (target.account.effectiveRank >= user.account.effectiveRank
|| target.account.globalRank > user.account.globalRank) {
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user.socket.emit("errorMsg", {
msg: "/mute failed - " + target.getName() + " has equal or higher rank " +
"than you."
});
return;
}
target.setFlag(Flags.U_MUTED);
this.muted.add(name);
this.channel.sendUserMeta(this.channel.users, target, -1);
this.channel.logger.log("[mod] " + user.getName() + " muted " + target.getName());
this.sendModMessage(user.getName() + " muted " + target.getName(), muteperm);
};
ChatModule.prototype.handleCmdSMute = function (user, msg, meta) {
if (!this.channel.modules.permissions.canMute(user)) {
return;
}
var muteperm = this.channel.modules.permissions.permissions.mute;
var args = msg.split(" ");
args.shift(); /* shift off /smute */
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var name = args.shift();
if (typeof name !== "string") {
user.socket.emit("errorMsg", {
msg: "/smute requires a target name"
});
return;
}
name = name.toLowerCase();
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var target;
for (var i = 0; i < this.channel.users.length; i++) {
if (this.channel.users[i].getLowerName() === name) {
target = this.channel.users[i];
break;
}
}
if (!target) {
user.socket.emit("errorMsg", {
msg: "/smute target " + name + " not present in channel."
});
return;
}
if (target.account.effectiveRank >= user.account.effectiveRank
|| target.account.globalRank > user.account.globalRank) {
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user.socket.emit("errorMsg", {
msg: "/smute failed - " + target.getName() + " has equal or higher rank " +
"than you."
});
return;
}
target.setFlag(Flags.U_MUTED | Flags.U_SMUTED);
this.muted.add(name);
this.muted.add(SHADOW_TAG + name);
this.channel.sendUserMeta(this.channel.users, target, muteperm);
this.channel.logger.log("[mod] " + user.getName() + " shadowmuted " + target.getName());
this.sendModMessage(user.getName() + " shadowmuted " + target.getName(), muteperm);
};
ChatModule.prototype.handleCmdUnmute = function (user, msg, meta) {
if (!this.channel.modules.permissions.canMute(user)) {
return;
}
var muteperm = this.channel.modules.permissions.permissions.mute;
var args = msg.split(" ");
args.shift(); /* shift off /mute */
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var name = args.shift();
if (typeof name !== "string") {
user.socket.emit("errorMsg", {
msg: "/unmute requires a target name"
});
return;
}
name = name.toLowerCase();
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if (!this.isMuted(name)) {
user.socket.emit("errorMsg", {
msg: name + " is not muted."
});
return;
}
this.muted.remove(name);
this.muted.remove(SHADOW_TAG + name);
var target;
for (var i = 0; i < this.channel.users.length; i++) {
if (this.channel.users[i].getLowerName() === name) {
target = this.channel.users[i];
break;
}
}
if (!target) {
return;
}
target.clearFlag(Flags.U_MUTED | Flags.U_SMUTED);
this.channel.sendUserMeta(this.channel.users, target, -1);
this.channel.logger.log("[mod] " + user.getName() + " unmuted " + target.getName());
this.sendModMessage(user.getName() + " unmuted " + target.getName(), muteperm);
};
module.exports = ChatModule;