mirror of
https://github.com/hedgedoc/hedgedoc.git
synced 2024-11-28 22:34:26 -05:00
666 lines
No EOL
21 KiB
JavaScript
666 lines
No EOL
21 KiB
JavaScript
//realtime
|
|
//external modules
|
|
var cookie = require('cookie');
|
|
var cookieParser = require('cookie-parser');
|
|
var url = require('url');
|
|
var async = require('async');
|
|
var LZString = require('lz-string');
|
|
var shortId = require('shortid');
|
|
var randomcolor = require("randomcolor");
|
|
var Chance = require('chance'),
|
|
chance = new Chance();
|
|
var md5 = require("blueimp-md5").md5;
|
|
var moment = require('moment');
|
|
|
|
//core
|
|
var config = require("../config.js");
|
|
var logger = require("./logger.js");
|
|
|
|
//ot
|
|
var ot = require("./ot/index.js");
|
|
|
|
//others
|
|
var db = require("./db.js");
|
|
var Note = require("./note.js");
|
|
var User = require("./user.js");
|
|
|
|
//public
|
|
var realtime = {
|
|
io: null,
|
|
onAuthorizeSuccess: onAuthorizeSuccess,
|
|
onAuthorizeFail: onAuthorizeFail,
|
|
secure: secure,
|
|
connection: connection,
|
|
getStatus: getStatus
|
|
};
|
|
|
|
function onAuthorizeSuccess(data, accept) {
|
|
accept(null, true);
|
|
}
|
|
|
|
function onAuthorizeFail(data, message, error, accept) {
|
|
if (error) throw new Error(message);
|
|
accept(null, true);
|
|
}
|
|
|
|
function secure(socket, next) {
|
|
try {
|
|
var handshakeData = socket.request;
|
|
if (handshakeData.headers.cookie) {
|
|
handshakeData.cookie = cookie.parse(handshakeData.headers.cookie);
|
|
handshakeData.sessionID = cookieParser.signedCookie(handshakeData.cookie[config.sessionname], config.sessionsecret);
|
|
if (handshakeData.cookie[config.sessionname] == handshakeData.sessionID) {
|
|
next(new Error('AUTH failed: Cookie is invalid.'));
|
|
}
|
|
} else {
|
|
next(new Error('AUTH failed: No cookie transmitted.'));
|
|
}
|
|
if (config.debug)
|
|
logger.info("AUTH success cookie: " + handshakeData.sessionID);
|
|
|
|
next();
|
|
} catch (ex) {
|
|
next(new Error("AUTH failed:" + JSON.stringify(ex)));
|
|
}
|
|
}
|
|
|
|
function emitCheck(note) {
|
|
var out = {
|
|
updatetime: note.updatetime
|
|
};
|
|
realtime.io.to(note.id).emit('check', out);
|
|
/*
|
|
for (var i = 0, l = note.socks.length; i < l; i++) {
|
|
var sock = note.socks[i];
|
|
sock.emit('check', out);
|
|
};
|
|
*/
|
|
}
|
|
|
|
//actions
|
|
var users = {};
|
|
var notes = {};
|
|
//update when the note is dirty
|
|
var updater = setInterval(function () {
|
|
async.each(Object.keys(notes), function (key, callback) {
|
|
var note = notes[key];
|
|
if (note.server.isDirty) {
|
|
if (config.debug)
|
|
logger.info("updater found dirty note: " + key);
|
|
var body = note.server.document;
|
|
var title = Note.getNoteTitle(body);
|
|
title = LZString.compressToBase64(title);
|
|
body = LZString.compressToBase64(body);
|
|
db.saveToDB(key, title, body, function (err, result) {
|
|
if (err) return;
|
|
note.server.isDirty = false;
|
|
note.updatetime = Date.now();
|
|
emitCheck(note);
|
|
});
|
|
}
|
|
callback();
|
|
}, function (err) {
|
|
if (err) return logger.error('updater error', err);
|
|
});
|
|
}, 1000);
|
|
//clean when user not in any rooms
|
|
var cleaner = setInterval(function () {
|
|
async.each(Object.keys(users), function (key, callback) {
|
|
var socket = realtime.io.sockets.connected[key];
|
|
if (!socket || !socket.rooms || socket.rooms.length <= 0) {
|
|
if (config.debug)
|
|
logger.info("cleaner found redundant user: " + key);
|
|
disconnectSocketQueue.push(socket);
|
|
disconnect(socket);
|
|
}
|
|
callback();
|
|
}, function (err) {
|
|
if (err) return logger.error('cleaner error', err);
|
|
});
|
|
}, 60000);
|
|
|
|
function getStatus(callback) {
|
|
db.countFromDB(function (err, data) {
|
|
if (err) return logger.info(err);
|
|
var distinctaddresses = [];
|
|
var regaddresses = [];
|
|
var distinctregaddresses = [];
|
|
Object.keys(users).forEach(function (key) {
|
|
var user = users[key];
|
|
var found = false;
|
|
for (var i = 0; i < distinctaddresses.length; i++) {
|
|
if (user.address == distinctaddresses[i]) {
|
|
found = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!found) {
|
|
distinctaddresses.push(user.address);
|
|
}
|
|
if (user.login) {
|
|
regaddresses.push(user.address);
|
|
var found = false;
|
|
for (var i = 0; i < distinctregaddresses.length; i++) {
|
|
if (user.address == distinctregaddresses[i]) {
|
|
found = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!found) {
|
|
distinctregaddresses.push(user.address);
|
|
}
|
|
}
|
|
});
|
|
User.getUserCount(function (err, regcount) {
|
|
if (err) {
|
|
logger.error('get status failed: ' + err);
|
|
return;
|
|
}
|
|
if (callback)
|
|
callback({
|
|
onlineNotes: Object.keys(notes).length,
|
|
onlineUsers: Object.keys(users).length,
|
|
distinctOnlineUsers: distinctaddresses.length,
|
|
notesCount: data.rows[0].count,
|
|
registeredUsers: regcount,
|
|
onlineRegisteredUsers: regaddresses.length,
|
|
distinctOnlineRegisteredUsers: distinctregaddresses.length
|
|
});
|
|
});
|
|
});
|
|
}
|
|
|
|
function getNotenameFromSocket(socket) {
|
|
if (!socket || !socket.handshake || !socket.handshake.headers) {
|
|
return;
|
|
}
|
|
var referer = socket.handshake.headers.referer;
|
|
if (!referer) {
|
|
return socket.disconnect(true);
|
|
}
|
|
var hostUrl = url.parse(referer);
|
|
var notename = hostUrl.pathname.split('/')[1];
|
|
if (notename == config.featuresnotename) {
|
|
return notename;
|
|
}
|
|
if (!Note.checkNoteIdValid(notename)) {
|
|
socket.emit('info', {
|
|
code: 404
|
|
});
|
|
return socket.disconnect(true);
|
|
}
|
|
notename = LZString.decompressFromBase64(notename);
|
|
return notename;
|
|
}
|
|
|
|
function emitOnlineUsers(socket) {
|
|
var notename = getNotenameFromSocket(socket);
|
|
if (!notename || !notes[notename]) return;
|
|
var users = [];
|
|
Object.keys(notes[notename].users).forEach(function (key) {
|
|
var user = notes[notename].users[key];
|
|
if (user)
|
|
users.push(buildUserOutData(user));
|
|
});
|
|
var out = {
|
|
users: users
|
|
};
|
|
out = LZString.compressToUTF16(JSON.stringify(out));
|
|
realtime.io.to(notename).emit('online users', out);
|
|
/*
|
|
for (var i = 0, l = notes[notename].socks.length; i < l; i++) {
|
|
var sock = notes[notename].socks[i];
|
|
if (sock && out)
|
|
sock.emit('online users', out);
|
|
};
|
|
*/
|
|
}
|
|
|
|
function emitUserStatus(socket) {
|
|
var notename = getNotenameFromSocket(socket);
|
|
if (!notename || !notes[notename]) return;
|
|
var out = buildUserOutData(users[socket.id]);
|
|
socket.broadcast.to(notename).emit('user status', out);
|
|
/*
|
|
for (var i = 0, l = notes[notename].socks.length; i < l; i++) {
|
|
var sock = notes[notename].socks[i];
|
|
if (sock != socket) {
|
|
sock.emit('user status', out);
|
|
}
|
|
};
|
|
*/
|
|
}
|
|
|
|
function emitRefresh(socket) {
|
|
var notename = getNotenameFromSocket(socket);
|
|
if (!notename || !notes[notename]) return;
|
|
var note = notes[notename];
|
|
socket.emit('refresh', {
|
|
docmaxlength: config.documentmaxlength,
|
|
owner: note.owner,
|
|
permission: note.permission,
|
|
updatetime: note.updatetime
|
|
});
|
|
}
|
|
|
|
var isConnectionBusy = false;
|
|
var connectionSocketQueue = [];
|
|
var isDisconnectBusy = false;
|
|
var disconnectSocketQueue = [];
|
|
|
|
function finishConnection(socket, note, user) {
|
|
note.users[socket.id] = user;
|
|
note.socks.push(socket);
|
|
note.server.addClient(socket);
|
|
note.server.setName(socket, user.name);
|
|
note.server.setColor(socket, user.color);
|
|
|
|
emitOnlineUsers(socket);
|
|
emitRefresh(socket);
|
|
|
|
//clear finished socket in queue
|
|
for (var i = 0; i < connectionSocketQueue.length; i++) {
|
|
if (connectionSocketQueue[i].id == socket.id)
|
|
connectionSocketQueue.splice(i, 1);
|
|
}
|
|
//seek for next socket
|
|
isConnectionBusy = false;
|
|
if (connectionSocketQueue.length > 0)
|
|
startConnection(connectionSocketQueue[0]);
|
|
|
|
if (config.debug) {
|
|
var notename = getNotenameFromSocket(socket);
|
|
logger.info('SERVER connected a client to [' + notename + ']:');
|
|
logger.info(JSON.stringify(user));
|
|
//logger.info(notes);
|
|
getStatus(function (data) {
|
|
logger.info(JSON.stringify(data));
|
|
});
|
|
}
|
|
}
|
|
|
|
function startConnection(socket) {
|
|
if (isConnectionBusy) return;
|
|
isConnectionBusy = true;
|
|
|
|
var notename = getNotenameFromSocket(socket);
|
|
if (!notename) {
|
|
isConnectionBusy = false;
|
|
return;
|
|
}
|
|
|
|
if (!notes[notename]) {
|
|
db.readFromDB(notename, function (err, data) {
|
|
if (err) {
|
|
socket.emit('info', {
|
|
code: 404
|
|
});
|
|
socket.disconnect(true);
|
|
//clear err socket in queue
|
|
for (var i = 0; i < connectionSocketQueue.length; i++) {
|
|
if (connectionSocketQueue[i].id == socket.id)
|
|
connectionSocketQueue.splice(i, 1);
|
|
}
|
|
isConnectionBusy = false;
|
|
return logger.error(err);
|
|
}
|
|
var owner = data.rows[0].owner;
|
|
var permission = "freely";
|
|
if (owner && owner != "null") {
|
|
permission = "editable";
|
|
}
|
|
Note.findOrNewNote(notename, permission, function (err, note) {
|
|
if (err) {
|
|
responseError(res, "404", "Not Found", "oops.");
|
|
isConnectionBusy = false;
|
|
return;
|
|
}
|
|
var body = LZString.decompressFromBase64(data.rows[0].content);
|
|
//body = LZString.compressToUTF16(body);
|
|
var updatetime = data.rows[0].update_time;
|
|
var server = new ot.EditorSocketIOServer(body, [], notename, ifMayEdit);
|
|
notes[notename] = {
|
|
id: notename,
|
|
owner: owner,
|
|
permission: note.permission,
|
|
socks: [],
|
|
users: {},
|
|
updatetime: moment(updatetime).valueOf(),
|
|
server: server
|
|
};
|
|
finishConnection(socket, notes[notename], users[socket.id]);
|
|
});
|
|
});
|
|
} else {
|
|
finishConnection(socket, notes[notename], users[socket.id]);
|
|
}
|
|
}
|
|
|
|
function disconnect(socket) {
|
|
if (isDisconnectBusy) return;
|
|
isDisconnectBusy = true;
|
|
|
|
if (config.debug) {
|
|
logger.info("SERVER disconnected a client");
|
|
logger.info(JSON.stringify(users[socket.id]));
|
|
}
|
|
var notename = getNotenameFromSocket(socket);
|
|
if (!notename) {
|
|
isDisconnectBusy = false;
|
|
return;
|
|
}
|
|
if (users[socket.id]) {
|
|
delete users[socket.id];
|
|
}
|
|
var note = notes[notename];
|
|
if (note) {
|
|
delete note.users[socket.id];
|
|
do {
|
|
var index = note.socks.indexOf(socket);
|
|
if (index != -1) {
|
|
note.socks.splice(index, 1);
|
|
}
|
|
} while (index != -1);
|
|
if (Object.keys(note.users).length <= 0) {
|
|
if (note.server.isDirty) {
|
|
var body = note.server.document;
|
|
var title = Note.getNoteTitle(body);
|
|
title = LZString.compressToBase64(title);
|
|
body = LZString.compressToBase64(body);
|
|
db.saveToDB(notename, title, body,
|
|
function (err, result) {
|
|
delete notes[notename];
|
|
if (config.debug) {
|
|
//logger.info(notes);
|
|
getStatus(function (data) {
|
|
logger.info(JSON.stringify(data));
|
|
});
|
|
}
|
|
});
|
|
} else {
|
|
delete notes[notename];
|
|
}
|
|
}
|
|
}
|
|
emitOnlineUsers(socket);
|
|
|
|
//clear finished socket in queue
|
|
for (var i = 0; i < disconnectSocketQueue.length; i++) {
|
|
if (disconnectSocketQueue[i].id == socket.id)
|
|
disconnectSocketQueue.splice(i, 1);
|
|
}
|
|
//seek for next socket
|
|
isDisconnectBusy = false;
|
|
if (disconnectSocketQueue.length > 0)
|
|
disconnect(disconnectSocketQueue[0]);
|
|
|
|
if (config.debug) {
|
|
//logger.info(notes);
|
|
getStatus(function (data) {
|
|
logger.info(JSON.stringify(data));
|
|
});
|
|
}
|
|
}
|
|
|
|
function buildUserOutData(user) {
|
|
var out = {
|
|
id: user.id,
|
|
login: user.login,
|
|
userid: user.userid,
|
|
photo: user.photo,
|
|
color: user.color,
|
|
cursor: user.cursor,
|
|
name: user.name,
|
|
idle: user.idle,
|
|
type: user.type
|
|
};
|
|
return out;
|
|
}
|
|
|
|
function updateUserData(socket, user) {
|
|
//retrieve user data from passport
|
|
if (socket.request.user && socket.request.user.logged_in) {
|
|
var profile = JSON.parse(socket.request.user.profile);
|
|
var photo = null;
|
|
switch (profile.provider) {
|
|
case "facebook":
|
|
photo = 'https://graph.facebook.com/' + profile.id + '/picture';
|
|
break;
|
|
case "twitter":
|
|
photo = profile.photos[0].value;
|
|
break;
|
|
case "github":
|
|
photo = 'https://avatars.githubusercontent.com/u/' + profile.id + '?s=48';
|
|
break;
|
|
case "dropbox":
|
|
//no image api provided, use gravatar
|
|
photo = 'https://www.gravatar.com/avatar/' + md5(profile.emails[0].value);
|
|
break;
|
|
}
|
|
user.photo = photo;
|
|
user.name = profile.displayName || profile.username;
|
|
user.userid = socket.request.user._id;
|
|
user.login = true;
|
|
} else {
|
|
user.userid = null;
|
|
user.name = 'Guest ' + chance.last();
|
|
user.login = false;
|
|
}
|
|
}
|
|
|
|
function ifMayEdit(socket, callback) {
|
|
var notename = getNotenameFromSocket(socket);
|
|
if (!notename || !notes[notename]) return;
|
|
var note = notes[notename];
|
|
var mayEdit = true;
|
|
switch (note.permission) {
|
|
case "freely":
|
|
//not blocking anyone
|
|
break;
|
|
case "editable":
|
|
//only login user can change
|
|
if (!socket.request.user || !socket.request.user.logged_in)
|
|
mayEdit = false;
|
|
break;
|
|
case "locked":
|
|
//only owner can change
|
|
if (note.owner != socket.request.user._id)
|
|
mayEdit = false;
|
|
break;
|
|
}
|
|
callback(mayEdit);
|
|
}
|
|
|
|
function connection(socket) {
|
|
//split notename from socket
|
|
var notename = getNotenameFromSocket(socket);
|
|
|
|
//initialize user data
|
|
//random color
|
|
var color = randomcolor({
|
|
luminosity: 'light'
|
|
});
|
|
//make sure color not duplicated or reach max random count
|
|
if (notename && notes[notename]) {
|
|
var randomcount = 0;
|
|
var maxrandomcount = 5;
|
|
var found = false;
|
|
do {
|
|
Object.keys(notes[notename].users).forEach(function (user) {
|
|
if (user.color == color) {
|
|
found = true;
|
|
return;
|
|
}
|
|
});
|
|
if (found) {
|
|
color = randomcolor({
|
|
luminosity: 'light'
|
|
});
|
|
randomcount++;
|
|
}
|
|
} while (found && randomcount < maxrandomcount);
|
|
}
|
|
//create user data
|
|
users[socket.id] = {
|
|
id: socket.id,
|
|
address: socket.handshake.address,
|
|
'user-agent': socket.handshake.headers['user-agent'],
|
|
color: color,
|
|
cursor: null,
|
|
login: false,
|
|
userid: null,
|
|
name: null,
|
|
idle: false,
|
|
type: null
|
|
};
|
|
updateUserData(socket, users[socket.id]);
|
|
|
|
//start connection
|
|
connectionSocketQueue.push(socket);
|
|
startConnection(socket);
|
|
|
|
//received client refresh request
|
|
socket.on('refresh', function () {
|
|
emitRefresh(socket);
|
|
});
|
|
|
|
//received user status
|
|
socket.on('user status', function (data) {
|
|
var notename = getNotenameFromSocket(socket);
|
|
if (!notename || !notes[notename]) return;
|
|
if (config.debug)
|
|
logger.info('SERVER received [' + notename + '] user status from [' + socket.id + ']: ' + JSON.stringify(data));
|
|
if (data) {
|
|
var user = users[socket.id];
|
|
user.idle = data.idle;
|
|
user.type = data.type;
|
|
}
|
|
emitUserStatus(socket);
|
|
});
|
|
|
|
//received note permission change request
|
|
socket.on('permission', function (permission) {
|
|
//need login to do more actions
|
|
if (socket.request.user && socket.request.user.logged_in) {
|
|
var notename = getNotenameFromSocket(socket);
|
|
if (!notename || !notes[notename]) return;
|
|
var note = notes[notename];
|
|
//Only owner can change permission
|
|
if (note.owner == socket.request.user._id) {
|
|
note.permission = permission;
|
|
Note.findNote(notename, function (err, _note) {
|
|
if (err || !_note) {
|
|
return;
|
|
}
|
|
Note.updatePermission(_note, permission, function (err, _note) {
|
|
if (err || !_note) {
|
|
return;
|
|
}
|
|
var out = {
|
|
permission: permission
|
|
};
|
|
realtime.io.to(note.id).emit('permission', out);
|
|
/*
|
|
for (var i = 0, l = note.socks.length; i < l; i++) {
|
|
var sock = note.socks[i];
|
|
sock.emit('permission', out);
|
|
};
|
|
*/
|
|
});
|
|
});
|
|
}
|
|
}
|
|
});
|
|
|
|
//reveiced when user logout or changed
|
|
socket.on('user changed', function () {
|
|
logger.info('user changed');
|
|
var notename = getNotenameFromSocket(socket);
|
|
if (!notename || !notes[notename]) return;
|
|
updateUserData(socket, notes[notename].users[socket.id]);
|
|
emitOnlineUsers(socket);
|
|
});
|
|
|
|
//received sync of online users request
|
|
socket.on('online users', function () {
|
|
var notename = getNotenameFromSocket(socket);
|
|
if (!notename || !notes[notename]) return;
|
|
var users = [];
|
|
Object.keys(notes[notename].users).forEach(function (key) {
|
|
var user = notes[notename].users[key];
|
|
if (user)
|
|
users.push(buildUserOutData(user));
|
|
});
|
|
var out = {
|
|
users: users
|
|
};
|
|
out = LZString.compressToUTF16(JSON.stringify(out));
|
|
socket.emit('online users', out);
|
|
});
|
|
|
|
//check version
|
|
socket.on('version', function () {
|
|
socket.emit('version', config.version);
|
|
});
|
|
|
|
//received cursor focus
|
|
socket.on('cursor focus', function (data) {
|
|
var notename = getNotenameFromSocket(socket);
|
|
if (!notename || !notes[notename]) return;
|
|
users[socket.id].cursor = data;
|
|
var out = buildUserOutData(users[socket.id]);
|
|
socket.broadcast.to(notename).emit('cursor focus', out);
|
|
/*
|
|
for (var i = 0, l = notes[notename].socks.length; i < l; i++) {
|
|
var sock = notes[notename].socks[i];
|
|
if (sock != socket) {
|
|
sock.emit('cursor focus', out);
|
|
}
|
|
};
|
|
*/
|
|
});
|
|
|
|
//received cursor activity
|
|
socket.on('cursor activity', function (data) {
|
|
var notename = getNotenameFromSocket(socket);
|
|
if (!notename || !notes[notename]) return;
|
|
users[socket.id].cursor = data;
|
|
var out = buildUserOutData(users[socket.id]);
|
|
socket.broadcast.to(notename).emit('cursor activity', out);
|
|
/*
|
|
for (var i = 0, l = notes[notename].socks.length; i < l; i++) {
|
|
var sock = notes[notename].socks[i];
|
|
if (sock != socket) {
|
|
sock.emit('cursor activity', out);
|
|
}
|
|
};
|
|
*/
|
|
});
|
|
|
|
//received cursor blur
|
|
socket.on('cursor blur', function () {
|
|
var notename = getNotenameFromSocket(socket);
|
|
if (!notename || !notes[notename]) return;
|
|
users[socket.id].cursor = null;
|
|
var out = {
|
|
id: socket.id
|
|
};
|
|
socket.broadcast.to(notename).emit('cursor blur', out);
|
|
/*
|
|
for (var i = 0, l = notes[notename].socks.length; i < l; i++) {
|
|
var sock = notes[notename].socks[i];
|
|
if (sock != socket) {
|
|
sock.emit('cursor blur', out);
|
|
}
|
|
};
|
|
*/
|
|
});
|
|
|
|
//when a new client disconnect
|
|
socket.on('disconnect', function () {
|
|
disconnectSocketQueue.push(socket);
|
|
disconnect(socket);
|
|
});
|
|
}
|
|
|
|
module.exports = realtime; |