tildefriends/core/app.js

161 lines
3.7 KiB
JavaScript

"use strict";
function App() {
this._on_output = null;
this._send_queue = [];
return this;
}
App.prototype.readOutput = function(callback) {
this._on_output = callback;
}
App.prototype.makeFunction = function(api) {
let self = this;
let result = function() {
let message = {action: api[0]};
for (let i = 1; i < api.length; i++) {
message[api[i]] = arguments[i - 1];
}
self.send(message);
};
Object.defineProperty(result, 'name', {value: api[0], writable: false});
return result;
}
App.prototype.send = function(message) {
if (message) {
this._send_queue.push(message);
}
if (this._on_output) {
this._send_queue.forEach(message => this._on_output(message));
this._send_queue = [];
}
}
function socket(request, response, client) {
var process;
var options = {};
var credentials = auth.query(request.headers);
response.onClose = async function() {
if (process && process.task) {
process.task.kill();
}
}
response.onError = async function(error) {
if (process && process.task) {
process.task.kill();
}
}
response.onMessage = async function(event) {
if (event.opCode == 0x1 || event.opCode == 0x2) {
var message;
try {
message = JSON.parse(event.data);
} catch (error) {
print("ERROR", error, event.data, event.data.length, event.opCode);
return;
}
if (message.action == "hello") {
var packageOwner;
var packageName;
var blobId;
var match;
var parentApp;
if (match = /^\/([&%][^\.]{44}(?:\.\w+)?)(\/?.*)/.exec(message.path)) {
blobId = match[1];
} else if (match = /^\/\~([^\/]+)\/([^\/]+)\/$/.exec(message.path)) {
var user = match[1];
var path = match[2];
blobId = await new Database(user).get('path:' + path);
if (!blobId) {
response.send(JSON.stringify({action: "error", error: message.path + ' not found'}), 0x1);
return;
}
if (user != 'core') {
var coreId = await new Database('core').get('path:' + path);
parentApp = {
path: '/~core/' + path + '/',
id: coreId,
};
}
}
response.send(JSON.stringify({
action: "session",
credentials: credentials,
parentApp: parentApp,
id: blobId,
}), 0x1);
options.api = message.api || [];
options.credentials = credentials;
var sessionId = makeSessionId();
if (blobId) {
process = await getSessionProcessBlob(blobId, sessionId, options);
}
if (process) {
process.app.readOutput(function(message) {
response.send(JSON.stringify(message), 0x1);
});
process.app.send();
}
var ping = function() {
var now = Date.now();
var again = true;
if (now - process.lastActive < process.timeout) {
// Active.
} else if (process.lastPing > process.lastActive) {
// We lost them.
if (process.task) {
process.task.kill();
}
again = false;
} else {
// Idle. Ping them.
response.send("", 0x9);
process.lastPing = now;
}
if (again) {
setTimeout(ping, process.timeout);
}
}
if (process && process.timeout > 0) {
setTimeout(ping, process.timeout);
}
} else if (message.action == 'enableStats') {
if (process) {
process.stats = message.enabled;
if (!gStatsTimer) {
sendStats();
gStatsTimer = true;
}
}
} else {
if (process && process.eventHandlers['message']) {
await invoke(process.eventHandlers['message'], [message]);
}
}
} else if (event.opCode == 0x8) {
// Close.
if (process && process.task) {
process.task.kill();
}
response.send(event.data, 0x8);
} else if (event.opCode == 0xa) {
// PONG
}
if (process) {
process.lastActive = Date.now();
}
}
}
exports.socket = socket;