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siri.js
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siri.js
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/*jslint node: true, nomen: true, plusplus: true, white: true */
'use strict';
var tls = require('tls'),
util = require('util'),
zlib = require('zlib'),
fs = require('fs'),
Stream = require('stream'),
net = require('net'),
os = require('os'),
debug = require('debug')('siri:debug'),
warn = require('debug')('siri:warn'),
error = require('debug')('siri:error'),
dnsproxy = require('dnsproxy'),
i18n = require("i18n"),
nconf = require("nconf"),
package_json = require('./package.json'),
parser = require("./parser"),
bplist = require("./bplist"),
SiriParser = parser.SiriParser;
// nconf will use (in-order):
// 1. Command-line arguments
// 2. Environment variables
// 3. The file 'config.json'
nconf.argv()
.env()
.file({
file: './config.json'
});
i18n.configure({
locales: ['en', 'zh', 'de', 'es', 'fr', 'it', 'ja', 'ru'],
defaultLocale: 'en',
updateFiles: false,
extension: '.js',
directory: __dirname + '/locales'
});
i18n.setLocale(nconf.get('locale'));
var SIRI_SERVER = nconf.get('server') || 'guzzoni.apple.com',
SIRI_PORT = nconf.get('port') || 443,
DUMP_DATA = (nconf.get('dumpdata') === null) ? false : nconf.get('dumpdata'),
DNS_PROXY = (nconf.get('dnsproxy') === null) ? true : nconf.get('dnsproxy');
function __(str) {
return i18n.__(str);
}
function toArray(list) {
return [].slice.call(list, 0);
}
function fixNum(num, len) {
num |= 0;
len -= String(num).length;
return (len > 0 ? (new Array(len + 1)).join("0") : "") + num;
}
function dumpPackage(type, pkg) {
var id = dumpPackage.__id__ || 1;
fs.writeFileSync("data/" + fixNum(id, 4) + "." + type + ".json", JSON.stringify(bplist.toPObject(pkg.rootNode())));
debug(fixNum(id,4) + "." + type + ".json");
dumpPackage.__id__ = ++id;
}
function errorHandler(error) {
switch (error.code) {
case "EACCES":
console.error("[" + __("ERROR") + "] " + error.code + " :: " +
__('Siri Proxy cannot start on port') + " " + SIRI_PORT);
if (SIRI_PORT < 1024) {
console.warn(__('Privledged access is required') + ' ' +
__('to access reserved ports.'));
}
break;
case "EADDRINUSE":
console.error("[" + __('ERROR') + "] " + error.code + " :: " +
__('The port and address combination is already in use.'));
break;
case "ECONNRESET":
console.error("[" + __('ERROR') + "] " + error.code + " :: " +
__('The connection has been forcefully terminated.'));
break;
default:
if (error === "Error: DEPTH_ZERO_SELF_SIGNED_CERT") {
console.error("[" + __('ERROR') + "] " + "DEPTH_ZERO_SELF_SIGNED_CERT" +
" :: " + __('Cannot verify self-signed certificate.'));
console.warn(__('Verify your DNS settings on this server.'));
process.exit(1);
}
console.error("Undefined error: " + error);
}
}
function Server(options, commandListener) { // Server {{{
if (!(this instanceof Server)) {
return new Server(options, commandListener);
}
tls.Server.call(this, options);
this.deviceMap = {};
if (DNS_PROXY) {
this.dnsProxy = this.initDNSProxy(DNS_PROXY);
}
if (commandListener) {
this.on("command", commandListener);
}
this.on("secureConnection", secureConnectionListener);
this.on("clientError", function(err) {
warn(err);
});
this.on("error", errorHandler);
}
util.inherits(Server, tls.Server);
Server.prototype.initDNSProxy = function(address) {
var interfaces, found, name, ips, length, index, ip,
addresses;
if (!address) {
return null;
}
found = true;
if (!net.isIPv4(address)) {
found = false;
interfaces = os.networkInterfaces();
for (name in interfaces) {
if (interfaces.hasOwnProperty(name)) {
ips = interfaces[name];
length = ips.length;
for (index = 0; index < length; index++) {
ip = ips[index];
address = ip.address;
if (!ip.internal && ip.family === "IPv4" && net.isIPv4(address)) {
found = true;
break;
}
}
}
}
}
if (found) {
addresses = {};
addresses[SIRI_SERVER] = address;
debug(__("DNS Proxy") + ": " + SIRI_SERVER + " --> " + address);
return dnsproxy.createServer({
addresses: addresses
});
}
return null;
};
Server.prototype.getDevice = function(key) {
this.deviceMap[key] = (this.deviceMap[key] || new SiriDevice());
return this.deviceMap[key];
};
Server.prototype.start = function(callback) {
debug(__("Siri Proxy version") + ' ' + package_json.version);
debug(__("Siri Proxy starting on port") + ' ' + SIRI_PORT);
if (DNS_PROXY) {
this.dnsProxy && this.dnsProxy.start();
}
return this.listen(SIRI_PORT, callback);
};
Server.prototype.stop = function(callback) {
debug(__("Siri Proxy stopping") + '...');
var self = this,
serviceCount = 1,
dnsProxy = self.dnsProxy;
if (callback)
self.once("stop", callback);
if (dnsProxy) {
serviceCount++;
dnsProxy.once("close", onclose);
dnsProxy.close();
}
self.once("close", onclose);
self.close();
function onclose() {
if (!--serviceCount) {
self.emit("stop");
dnsProxy = null;
self = null;
}
}
};
exports.Server = Server;
exports.createServer = function(options, listener) {
if (typeof options === "function") {
listener = options;
options = undefined;
}
options = options || {
key: fs.readFileSync(__dirname + '/keys/server-key.pem'),
cert: fs.readFileSync(__dirname + '/keys/server-cert.pem')
};
return new Server(options, listener);
};
function secureConnectionListener(clientStream) {
var self = this,
STAT_UNINIT = 0,
STAT_CONNECT = 1,
STAT_CLOSED = 2,
clientState, clientParser, serverCompressor,
serverStream, serverState, serverParser, clientCompressor,
device = null;
// client -> clientStream -> clientParser -> serverCompressor -> server
clientState = STAT_CONNECT;
clientParser = new SiriParser(parser.SIRI_REQUEST);
serverCompressor = null;
// server -> serverStream -> serverParser -> clientCompressor -> client
serverStream = tls.connect(SIRI_PORT, SIRI_SERVER, onServerConnect)
.on('error', errorHandler);
serverState = STAT_UNINIT;
serverParser = new SiriParser(parser.SIRI_RESPONSE);
clientCompressor = null;
function onServerConnect() {
debug(__('Server connected.'));
serverState = STAT_CONNECT;
}
debug(__('Client connected.'));
clientStream.pipe(serverStream); // pipe client stream to server stream
// TODO remove debug code
//serverStream.pipe(clientStream);
//return;
//setup client stream {{{
function onClientData(data) {
clientParser.parse(data);
}
clientStream.on("data", onClientData);
clientParser.onAccept = function(pkg) {
switch (pkg.getType()) {
case parser.PKG_HTTP_HEADER:
device = self.getDevice(pkg.headers["X-Ace-Host"]);
break;
case parser.PKG_HTTP_ACEHEADER:
if (device) {
//服务端输出流压缩器
serverCompressor = zlib.createDeflate({
flush: zlib.Z_SYNC_FLUSH
});
serverCompressor.pipe(serverStream);
device.serverStream = serverCompressor;
//客户端输出流压缩器
clientCompressor = zlib.createDeflate({
flush: zlib.Z_SYNC_FLUSH
});
clientCompressor.pipe(clientStream);
device.clientStream = clientCompressor;
device.commandHandler = onCommand;
device.answerHandler = null;
}
break;
case parser.PKG_ACE_PLIST:
debug("<-- " + bplist.toObject(pkg.rootNode())["class"]);
if (DUMP_DATA) {
dumpPackage("client", pkg);
}
break;
case parser.PKG_HTTP_UNKNOW:
case parser.PKG_ACE_UNKNOW:
break;
default:
warn(__("Unknown package type") + ":" + pkg.type);
self.emit("error", "Unknown package type:" + pkg.type + "!");
break;
}
};
function onCommand(str) {
self.emit("command", str, device);
}
function onClientClose() {
debug(__('Client disconnected.'));
clientState = STAT_CLOSED;
clientStream.removeListener("close", onClientClose);
clientStream.removeListener("data", onClientData);
clientParser.onAccept = null;
delete clientParser.onAccept;
serverCompressor && serverCompressor.end();
serverStream.end();
onClose();
}
clientStream.on("close", onClientClose);
// }}}
//setup server stream {{{
function onServerData(data) {
serverParser.parse(data);
}
serverStream.on("data", onServerData);
serverParser.onAccept = function(pkg) {
switch (pkg.getType()) {
case parser.PKG_HTTP_HEADER:
case parser.PKG_HTTP_ACEHEADER:
case parser.PKG_HTTP_UNKNOW:
clientStream.write(pkg.getData());
break;
case parser.PKG_ACE_UNKNOW:
clientCompressor.write(pkg.getData());
break;
case parser.PKG_ACE_PLIST:
debug("--> " + bplist.toObject(pkg.rootNode())["class"]);
if (DUMP_DATA) {
dumpPackage("server", pkg);
}
device && device.receivePackage(pkg);
break;
default:
self.emit("error", "Unknow package type:" + pkg.type + "!");
break;
}
};
function onServerClose() {
debug(__('Server disconnected.'));
serverState = STAT_CLOSED;
serverStream.removeListener("close", onServerClose);
serverStream.removeListener("data", onServerData);
serverParser.onAccept = null;
delete serverParser.onAccept;
clientCompressor && clientCompressor.end();
clientStream.end();
onClose();
}
serverStream.on("close", onServerClose);
// }}}
// on client and server closed {{{
function onClose() {
if (clientState === STAT_CLOSED && serverState === STAT_CLOSED) {
debug(__('Recycling resources.'));
clientParser = null;
serverCompressor = null;
serverStream = null;
serverParser = null;
if (device) {
device.serverStream = null;
device.clientStream = null;
device.commandHandler = null;
device.answerHandler = null;
device = null;
}
}
} // }}}
}
// }}}
function SiriDevice() { // Device {{{
this.serverStream = null;
this.clientStream = null;
this.commandHandler = null;
this.answerHandler = null;
this.serverResponse = null;
this.viewList = [];
this.saying = false;
this.asking = false;
this.aceId = null;
this.refId = null;
this.version = null;
}
SiriDevice.prototype.onCommand = function(cmd) {
this.commandHandler && this.commandHandler(cmd);
};
SiriDevice.prototype.onAnswer = function(answer) {
this.answerHandler && this.answerHandler(answer);
};
SiriDevice.prototype.writeServer = function(pkg) {
this.serverStream && this.serverStream.write(pkg.getData());
};
SiriDevice.prototype.writeClient = function(pkg) {
this.clientStream && this.clientStream.write(pkg.getData());
};
SiriDevice.prototype.receivePackage = function(pkg) {
var obj = bplist.toObject(pkg.rootNode()),
text;
this.refId = obj.refId;
this.aceId = obj.aceId;
this.version = obj.v;
switch (obj["class"]) {
case "SpeechRecognized":
this.writeClient(pkg);
text = getRecognizedText(obj);
this.serverResponse = [];
if (this.asking) {
this.asking = false;
this.onAnswer(text);
} else {
this.onCommand(text);
}
break;
default:
if (this.serverResponse) {
this.serverResponse.push(pkg);
} else {
this.writeClient(pkg);
}
break;
}
};
function getRecognizedText(obj) {
if (obj["class"] !== "SpeechRecognized") {
return null;
}
var arr = [],
removeSpace = true;
obj.properties.recognition.properties.phrases.forEach(function(item) {
item.properties.interpretations[0].properties.tokens.forEach(function(item) {
var properties = item.properties;
removeSpace = removeSpace || properties.removeSpaceBefore;
arr.push(removeSpace ? "" : " ", properties.text);
removeSpace = properties.removeSpaceAfter;
});
});
error('--> "' + arr.join("") + '"');
return arr.join("");
}
SiriDevice.prototype.getUtteranceView = function(str, speakable, listen) {
error('<-- "' + str + '"');
return {
"class": "string:AssistantUtteranceView",
"properties": {
//"dialogIdentifier": "string:Misc#answer",
"speakableText": "unicode:" + (speakable === undefined ? str : speakable),
"text": "unicode:" + str,
"listenAfterSpeaking": "bool:" + (listen ? "true" : "false")
},
"group": "string:com.apple.ace.assistant"
};
};
SiriDevice.prototype.addView = function(view) {
var self = this;
this.viewList.push(view);
if (!this.saying) {
this.saying = true;
process.nextTick(function() {
if (self.saying) {
self.saying = false;
self.flushViews();
}
});
}
};
SiriDevice.prototype.flushViews = function() {
this.writeClient(new parser.ACEBinaryPlist(bplist.fromPObject({
"class": "string:AddViews",
"properties": {
"temporary": "bool:false",
//"dialogPhase": "string:Completion",
"scrollToTop": "bool:false",
"views": this.viewList,
},
"v": "string:" + this.version,
"refId": "string:" + this.refId,
"aceId": "string:" + this.aceId,
"group": "string:com.apple.ace.assistant"
})));
this.viewList = [];
};
SiriDevice.prototype.requestCompleted = function() {
this.writeClient(new parser.ACEBinaryPlist(bplist.fromPObject({
"class": "string:RequestCompleted",
"properties": {
"callbacks": []
},
"v": "string:" + this.version,
"refId": "string:" + this.refId,
"aceId": "string:" + this.aceId,
"group": "string:com.apple.ace.system"
})));
};
SiriDevice.prototype.proxy = function() {
var self = this;
if (this.serverResponse) {
this.serverResponse.forEach(function(pkg, index) {
self.writeClient(pkg);
});
this.serverResponse = null;
}
};
SiriDevice.prototype.say = function(str, speakable) {
this.addView(this.getUtteranceView(str, speakable, false));
};
SiriDevice.prototype.ask = function(str, speakable, callback) {
if (typeof(speakable) !== "string") {
callback = speakable;
speakable = undefined;
}
this.asking = true;
this.answerHandler = callback;
this.addView(this.getUtteranceView(str, speakable, true));
};
SiriDevice.prototype.end = function(str, speakable) {
if (str !== undefined) {
this.say(str, speakable);
}
this.saying = false;
this.serverResponse = null;
this.flushViews();
this.requestCompleted();
this.proxy();
};
// }}}
// vim600: sw=4 ts=4 fdm=marker syn=javascript