sync/lib/channel/emotes.js

200 lines
5.0 KiB
JavaScript

var ChannelModule = require("./module");
var XSS = require("../xss");
function EmoteList(defaults) {
if (!defaults) {
defaults = [];
}
this.emotes = defaults.map(validateEmote).filter(function (f) {
return f !== false;
});
}
EmoteList.prototype = {
pack: function () {
return Array.prototype.slice.call(this.emotes);
},
importList: function (emotes) {
this.emotes = Array.prototype.slice.call(emotes);
},
updateEmote: function (emote) {
var found = false;
for (var i = 0; i < this.emotes.length; i++) {
if (this.emotes[i].name === emote.name) {
found = true;
this.emotes[i] = emote;
break;
}
}
/* If no emote was updated, add a new one */
if (!found) {
this.emotes.push(emote);
}
},
removeEmote: function (emote) {
var found = false;
for (var i = 0; i < this.emotes.length; i++) {
if (this.emotes[i].name === emote.name) {
this.emotes.splice(i, 1);
break;
}
}
},
moveEmote: function (from, to) {
if (from < 0 || to < 0 ||
from >= this.emotes.length || to >= this.emotes.length) {
return false;
}
var f = this.emotes[from];
/* Offset from/to indexes to account for the fact that removing
an element changes the position of one of them.
I could have just done a swap, but it's already implemented this way
and it works. */
to = to > from ? to + 1 : to;
from = to > from ? from : from + 1;
this.emotes.splice(to, 0, f);
this.emotes.splice(from, 1);
return true;
},
};
function validateEmote(f) {
if (typeof f.name !== "string" || typeof f.image !== "string") {
return false;
}
f.image = f.image.substring(0, 1000);
f.image = XSS.sanitizeText(f.image);
var s = XSS.sanitizeText(f.name).replace(/([\\\.\?\+\*\$\^\|\(\)\[\]\{\}])/g, "\\$1");
s = "(^|\\s)" + s + "(?!\\S)";
f.source = s;
try {
new RegExp(f.source, "gi");
} catch (e) {
return false;
}
return f;
};
function EmoteModule(channel) {
ChannelModule.apply(this, arguments);
this.emotes = new EmoteList();
}
EmoteModule.prototype = Object.create(ChannelModule.prototype);
EmoteModule.prototype.load = function (data) {
if ("emotes" in data) {
for (var i = 0; i < data.emotes.length; i++) {
this.emotes.updateEmote(data.emotes[i]);
}
}
};
EmoteModule.prototype.save = function (data) {
data.emotes = this.emotes.pack();
};
EmoteModule.prototype.onUserPostJoin = function (user) {
user.socket.on("updateEmote", this.handleUpdateEmote.bind(this, user));
user.socket.on("importEmotes", this.handleImportEmotes.bind(this, user));
user.socket.on("moveEmote", this.handleMoveEmote.bind(this, user));
user.socket.on("removeEmote", this.handleRemoveEmote.bind(this, user));
this.sendEmotes([user]);
};
EmoteModule.prototype.sendEmotes = function (users) {
var f = this.emotes.pack();
var chan = this.channel;
users.forEach(function (u) {
u.socket.emit("emoteList", f);
});
};
EmoteModule.prototype.handleUpdateEmote = function (user, data) {
if (typeof data !== "object") {
return;
}
if (!this.channel.modules.permissions.canEditEmotes(user)) {
return;
}
var f = validateEmote(data);
if (!f) {
return;
}
this.emotes.updateEmote(f);
var chan = this.channel;
chan.broadcastAll("updateEmote", f);
chan.logger.log("[mod] " + user.getName() + " updated emote: " + f.name + " -> " +
f.image);
};
EmoteModule.prototype.handleImportEmotes = function (user, data) {
if (!(data instanceof Array)) {
return;
}
/* Note: importing requires a different permission node than simply
updating/removing */
if (!this.channel.modules.permissions.canImportEmotes(user)) {
return;
}
this.emotes.importList(data.map(validateEmote).filter(function (f) {
return f !== false;
}));
this.sendEmotes(this.channel.users);
};
EmoteModule.prototype.handleRemoveEmote = function (user, data) {
if (typeof data !== "object") {
return;
}
if (!this.channel.modules.permissions.canEditEmotes(user)) {
return;
}
if (typeof data.name !== "string") {
return;
}
this.emotes.removeEmote(data);
this.channel.logger.log("[mod] " + user.getName() + " removed emote: " + data.name);
this.channel.broadcastAll("removeEmote", data);
};
EmoteModule.prototype.handleMoveEmote = function (user, data) {
if (typeof data !== "object") {
return;
}
if (!this.channel.modules.permissions.canEditEmotes(user)) {
return;
}
if (typeof data.to !== "number" || typeof data.from !== "number") {
return;
}
this.emotes.moveEmote(data.from, data.to);
};
module.exports = EmoteModule;