cryptpad/www/common/outer/sharedworker.js

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// SPDX-FileCopyrightText: 2023 XWiki CryptPad Team <contact@cryptpad.org> and contributors
//
// SPDX-License-Identifier: AGPL-3.0-or-later
/* global importScripts */
importScripts('/components/requirejs/require.js?ver=2.3.7');
window = self; // eslint-disable-line no-global-assign
localStorage = { // eslint-disable-line no-global-assign
setItem: function (k, v) { localStorage[k] = v; },
getItem: function (k) { return localStorage[k]; }
};
self.tabs = {};
var postMsg = function (client, data) {
client.port.postMessage(data);
};
var debug = function (msg) { console.log(msg); };
// debug = function () {};
var init = function (client, cb) {
debug('SharedW INIT');
require.config({
waitSeconds: 600
});
require(['/api/config?cb=' + (+new Date()).toString(16)], function (ApiConfig) {
if (ApiConfig.requireConf) { require.config(ApiConfig.requireConf); }
require([
'/common/requireconfig.js'
], function (RequireConfig) {
require.config(RequireConfig());
require([
'/common/common-util.js',
'/common/outer/worker-channel.js',
'/common/outer/store-rpc.js'
], function (Util, Channel, SRpc) {
debug('SharedW Required ressources loaded');
var msgEv = Util.mkEvent();
if (!self.Rpc) {
self.Rpc = SRpc();
}
var Rpc = self.Rpc;
var postToClient = function (data) {
postMsg(client, data);
};
Channel.create(msgEv, postToClient, function (chan) {
debug('SharedW Channel created');
var clientId = client.id;
client.chan = chan;
Object.keys(Rpc.queries).forEach(function (q) {
if (q === 'CONNECT') { return; }
if (q === 'JOIN_PAD') { return; }
if (q === 'SEND_PAD_MSG') { return; }
if (q === 'STOPWORKER') { return; }
chan.on(q, function (data, cb) {
try {
Rpc.queries[q](clientId, data, cb);
} catch (e) {
console.error('Error in webworker when executing query ' + q);
console.error(e);
console.log(data);
}
if (q === "DISCONNECT") {
console.log('Deleting existing store!');
client.close();
if (self.accountDeletion && self.accountDeletion === client.id) {
delete self.Rpc;
delete self.store;
}
}
});
});
chan.on('STOPWORKER', function () {
self.close();
});
chan.on('CONNECT', function (cfg, cb) {
debug('SharedW connecting to store...');
/*
if (self.store) {
debug('Store already exists!');
if (cfg.driveEvents) {
Rpc._subscribeToDrive(clientId);
}
return void cb(self.store);
}
*/
if (!self.store) {
debug('Loading new async store');
// One-time initialization (init async-store)
cfg.query = function (cId, cmd, data, cb) {
cb = cb || function () {};
self.tabs[cId].chan.query(cmd, data, function (err, data2) {
if (err) { return void cb({error: err}); }
cb(data2);
});
};
cfg.broadcast = function (excludes, cmd, data, cb) {
cb = cb || function () {};
Object.keys(self.tabs).forEach(function (cId) {
if (excludes.indexOf(+cId) !== -1) { return; }
self.tabs[cId].chan.query(cmd, data, function (err, data2) {
if (err) { return void cb({error: err}); }
cb(data2);
});
});
};
}
Rpc.queries['CONNECT'](clientId, cfg, function (data) {
if (cfg.driveEvents) {
Rpc._subscribeToDrive(clientId);
}
if (data && data.state === "ALREADY_INIT") {
debug('Store already exists!');
self.store = data.returned;
return void cb(data);
}
self.store = data;
cb(data);
});
});
chan.on('JOIN_PAD', function (data, cb) {
client.channelId = data.channel;
try {
Rpc.queries['JOIN_PAD'](clientId, data, cb);
} catch (e) {
console.error('Error in webworker when executing query JOIN_PAD');
console.error(e);
console.log(data);
}
});
chan.on('SEND_PAD_MSG', function (msg, cb) {
var data = {
msg: msg,
channel: client.channelId
};
try {
Rpc.queries['SEND_PAD_MSG'](clientId, data, cb);
} catch (e) {
console.error('Error in webworker when executing query SEND_PAD_MSG');
console.error(e);
console.log(data);
}
});
cb();
}, true);
client.msgEv = msgEv;
client.close = function () {
Rpc._removeClient(client.id);
};
});
});
});
};
addEventListener('connect', function(e) {
debug('New SharedWorker client');
var port = e.ports[0];
var cId = Number(Math.floor(Math.random() * Number.MAX_SAFE_INTEGER));
var client = self.tabs[cId] = {
id: cId,
port: port
};
port.onmessage = function (e) {
if (e.data === "INIT") {
if (client.init) { return; }
client.init = true;
init(client, function () {
postMsg(client, 'SW_READY');
});
} else if (e.data === "CLOSE") {
if (client && client.close) {
console.log('leave');
client.close();
}
} else if (client && client.msgEv) {
client.msgEv.fire(e);
}
};
});