663 lines
22 KiB
JavaScript
663 lines
22 KiB
JavaScript
// TODO: Получать, парсить и хранить тела писем (и, вероятно, вложения) + индексировать тексты
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// TODO: Группировка писем
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// TODO: Висеть в виде демона и сразу получать новые письма (IDLE)
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// TODO: Сделать веб-сервер
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// TODO: Сделать подписки на новые сообщения по вебсокетам
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// TODO: Чего я ещё хотел - интеграцию с maillog'ом и серверным спамфильтром
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/**
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* Нужные методы API:
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* - список аккаунтов и папок
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* - список сообщений в папке
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* - содержимое сообщения
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* - поиск по тексту
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* - список тредов в папке, с сообщениями
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* - проверить почту
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* - пометить прочтённым
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* - переместить
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* - удалить
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* - подсказка адресов To
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* - отправить сообщение
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*
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* В определённом плане получается тупость - получается, что дублируешь
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* функционал самого почтового сервера. Но шо ж с ним поделаешь, если он "ни ф силах"...
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* Ведь по сути-то, MTA от такой штуки нужен только 1 метод: "добавить сообщение в папку".
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*/
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require('heapdump');
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const gen = require("gen-thread");
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const Imap = require('imap');
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const iconv = require('iconv-lite');
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const MailParser = require('mailparser').MailParser;
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const bricks = require('pg-bricks');
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const htmlawed = require('htmlawed');
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const express = require('express');
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const express_session = require('express-session');
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const bodyparser = require('body-parser');
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const multer = require('multer');
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process.env.NODE_TLS_REJECT_UNAUTHORIZED = "0";
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var cfg = require('./cfg.json');
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var pg = bricks.configure(cfg.pg);
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var Syncer = {
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};
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Syncer.app = express();
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Syncer.app.use(bodyparser.urlencoded({ extended: false }));
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Syncer.app.use(express_session({
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secret: cfg.sessionSecret || '1083581xm1l3s1l39k',
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resave: false,
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saveUninitialized: false
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}));
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Syncer.app.get('/auth', function(req, res)
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{
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return res.type('html').send('<form action="/auth" method="post"><input name="login" /> <input name="password" type="password" /> <input type="submit" /></form>');
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});
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Syncer.app.post('/auth', function(req, res)
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{
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if (!req.body)
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return res.sendStatus(400);
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if (req.body.login == cfg.login && req.body.password == cfg.password)
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{
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req.session.auth = true;
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return res.send({ ok: true });
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}
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return res.send({ ok: false });
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});
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Syncer.app.get('/folders', genRequest(function*(req, res)
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{
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var self = Syncer;
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if (!req.session || !req.session.auth)
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return res.sendStatus(401);
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var [ accounts ] = yield pg.select('id, name, email').from('accounts').rows(gen.ef());
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var [ folders ] = yield pg.select(
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'id, account_id, name,'+
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' (select count(*) from messages m where m.folder_id=f.id) total_count,'+
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' (select count(*) from messages m where m.folder_id=f.id and (flags @> array[\'unread\']::varchar(255)[])) unread_count'
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).from('folders f').orderBy('account_id, name').rows(gen.ef());
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var fh = {};
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for (let i = 0; i < folders.length; i++)
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{
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fh[folders[i].account_id] = fh[folders[i].account_id] || [];
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fh[folders[i].account_id].push(folders[i]);
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}
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for (let i = 0; i < accounts.length; i++)
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{
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accounts[i].folders = fh[accounts[i].id] || [];
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}
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return res.send({ accounts: accounts });
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}));
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Syncer.app.get('/messages', genRequest(function*(req, res)
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{
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var self = Syncer;
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if (!req.session || !req.session.auth)
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return res.sendStatus(401);
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var folderId = req.query.folderId;
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if (!folderId)
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return res.status(500).send('Need `folderId` query parameter');
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var limit = req.query.limit || 50;
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var offset = req.query.offset || 0;
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var [ msgs ] = yield pg.select('*').from('messages').where({ folder_id: folderId })
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.limit(limit).offset(offset).rows(gen.ef());
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return res.send({ messages: msgs });
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}));
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Syncer.app.get('/message', genRequest(function*(req, res)
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{
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var self = Syncer;
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if (!req.session || !req.session.auth)
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return res.sendStatus(401);
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var msgId = req.query.msgId;
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var [ msg ] = yield pg.select('m.*, f.name folder_name, f.account_id')
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.from('messages m').join('folders f', 'f.id=m.folder_id')
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.where({ 'm.id': msgId }).row(gen.ef());
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if (!msg)
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return res.send({ error: 'not-found' });
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if (!msg.body_html && !msg.body_text)
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{
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var srv = yield* self.getConnection(msg.account_id, boxName);
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var [ upd ] = yield* self.runFetch(msg.uid, { bodies: '' }, msg.folder_id, 'getBody');
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self.releaseConnection(accountId);
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return res.send({ msg: { ...msg, ...upd } });
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}
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}));
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Syncer.getBody = function*(messages, boxId)
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{
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var self = this;
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var p = new MailParser({ streamAttachments: false, defaultCharset: 'windows-1251' });
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for (var i = 0; i < messages.length; i++)
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{
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let msg = messages[i];
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p.on('end', gen.cb());
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p.write(msg[0].headers);
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let obj = yield p.end();
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delete msg[0].headers;
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obj.html = htmlawed.sanitize(obj.html, { safe: 1, elements: '* +style' });
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let upd = { body_text: obj.text, body_html: obj.html };
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upd.body_html_text = obj.html.replace(/<style[^>]*>.*<\/style\s*>|<\/?[^>]*>/g, '');
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yield pg.update('messages m', upd).where({ folder_id: boxId, uid: msg[0].uid }).run(gen.ef());
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if (messages.length == 1)
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return [ upd ];
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}
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};
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Syncer.getConnection = function*(accountId, boxName)
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{
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var self = this;
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if (self.connections[accountId])
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{
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if (self.busy[accountId])
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yield self.queue[accountId].push(gen.cb());
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if (boxName && self.selected[accountId] != boxName)
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{
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yield srv.openBox(boxName, true, gen.ef());
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self.selected[accountId] = boxName;
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}
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self.busy[accountId] = true;
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return self.connections[accountId];
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}
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var srv = new Imap(self.accounts[accountId].imap);
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srv.once('ready', gen.cb());
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// FIXME handle connection errors
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yield srv.connect();
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yield srv._enqueue('ENABLE QRESYNC', gen.cb());
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// Monkey-patch node-imap to support VANISHED responses
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var oldUT = srv._parser._resUntagged;
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srv._parser._resUntagged = function()
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{
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var m;
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if (m = /^\* VANISHED( \(EARLIER\))? ([\d:,]+)/.exec(this._buffer))
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self.vanished.push(m[2].split(/,/).map(s => s.split(':')));
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oldUT.apply(this);
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};
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srv.on('close', function()
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{
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delete self.connections[accountId];
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if (self.srv == srv)
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delete self.srv;
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});
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if (boxName)
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{
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yield srv.openBox(boxName, true, gen.ef());
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self.selected[accountId] = boxName;
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}
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self.connections[accountId] = srv;
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self.busy[accountId] = true;
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self.queue[accountId] = [];
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return srv;
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}
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Syncer.releaseConnection = function(accountId)
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{
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var self = this;
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self.busy[accountId] = false;
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if (self.queue[accountId].length)
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(self.queue[accountId].shift())();
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}
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Syncer.sync = function*(account)
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{
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var self = this;
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var accountId;
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var [ rows ] = yield pg.select('id').from('accounts').where({ email: account.email }).rows(gen.ef());
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if (rows[0] && rows[0].id)
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accountId = rows[0].id;
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else
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{
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var [ row ] = yield pg.insert('accounts', {
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name: account.name,
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email: account.email,
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settings: {
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imap: account.imap
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}
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}).returning('id').row(gen.ef());
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accountId = row.id;
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}
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var srv = new Imap(account.imap);
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self.srv = srv;
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srv.once('ready', gen.cb());
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yield srv.connect();
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yield srv._enqueue('ENABLE QRESYNC', gen.cb());
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// Monkey-patch node-imap to support VANISHED responses
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var oldUT = srv._parser._resUntagged;
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srv._parser._resUntagged = function()
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{
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var m;
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if (m = /^\* VANISHED( \(EARLIER\))? ([\d:,]+)/.exec(this._buffer))
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self.vanished.push(m[2].split(/,/).map(s => s.split(':')));
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oldUT.apply(this);
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};
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var [ boxes ] = yield srv.getBoxes(gen.ef());
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for (var k in boxes)
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{
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var [ box ] = yield srv.openBox(k, true, gen.ef());
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var boxId, changedSince = 0;
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// IMAP sync: http://tools.ietf.org/html/rfc4549
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var [ row ] = yield pg.select('*').from('folders')
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.where({ account_id: accountId, name: box.name }).rows(gen.ef());
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self.versionTag = 0;
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if (row.length)
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{
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row = row[0];
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changedSince = row.highestmodseq;
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boxId = row.id;
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if (row.uidvalidity != box.uidvalidity)
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{
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yield pg.delete('messages').where({ folder_id: row.id })
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.where(pg.sql('uid is not null')).run(gen.ef());
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}
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else
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{
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[ self.versionTag ] = yield pg.select('MAX(vertag)').from('messages')
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.where({ folder_id: row.id }).val(gen.ef());
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self.versionTag = self.versionTag || 0;
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}
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}
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else
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{
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[ row ] = yield pg.insert('folders', {
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name: box.name,
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uidvalidity: box.uidvalidity,
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account_id: accountId,
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highestmodseq: 0,
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//unread_count: box.messages.new,
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//total_count: box.messages.total,
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}).returning('id').row(gen.ef());
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boxId = row.id;
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}
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self.missing = [];
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var [ maxUid ] = yield pg.select('MAX(uid)').from('messages').where({ folder_id: boxId }).val(gen.ef());
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if (changedSince)
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{
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process.stderr.write(account.email+'/'+box.name+': quick resync\n');
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self.vanished = [];
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yield* self.runFetch('1:'+maxUid, { modifiers: { changedsince: changedSince+' VANISHED' } }, boxId, 'updateFlags');
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if (self.vanished.length)
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{
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let lst = [];
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let dia = [];
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for (let i = 0; i < self.vanished.length; i++)
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{
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if (self.vanished[i][1])
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dia.push('uid >= '+self.vanished[i][0]+' AND uid <= '+self.vanished[i][1]);
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else
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lst.push(self.vanished[i][0]);
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}
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if (lst.length)
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dia.push('uid IN ('+lst.join(',')+')');
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yield* self.deleteMessages(pg.sql.and({ folder_id: boxId }, pg.sql('('+dia.join(' OR ')+')')));
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}
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}
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else if (maxUid)
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{
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// list messages, update flags and version tag
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self.versionTag++;
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if (self.versionTag >= 0x7fffffff)
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{
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yield pg.update('messages', { vertag: 0 }).where({ folder_id: boxId }).run(gen.ef());
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self.versionTag = 1;
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}
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process.stderr.write(account.email+'/'+box.name+': full resync\n');
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process.stderr.write('\rsynchronizing 0');
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yield* self.runFetch('1:'+maxUid, {}, boxId, 'updateFlags');
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process.stderr.write('\n');
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// delete messages removed from IMAP server
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yield* self.deleteMessages(pg.sql.and({ folder_id: boxId }, pg.sql('uid is not null'), pg.sql.lt('vertag', self.versionTag)));
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}
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// fetch new messages
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self.missing.push((maxUid ? maxUid+1 : 1)+':*');
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yield* self.runFetch(self.missing, {
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size: true,
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bodies: 'HEADER'
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}, boxId, 'saveMessages');
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yield pg.update('folders', {
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uidvalidity: box.uidvalidity,
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//unread_count: box.messages.new,
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highestmodseq: box.highestmodseq||0
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}).where({ id: row.id }).run(gen.ef());
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yield srv.closeBox(gen.cb());
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}
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srv.end();
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self.srv = null;
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}
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Syncer.deleteMessages = function*(where)
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{
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console.log(where+'');
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yield pg.update('threads', { first_msg: null })
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.where(pg.sql('first_msg IN ('+pg.select('id').from('messages').where(where)+')'))
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.run(gen.ef());
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yield pg.delete('messages').where(where).run(gen.ef());
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yield pg.update('threads',
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{ first_msg: pg.sql('('+
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pg.select('id').from('messages').where({ thread_id: pg.sql('threads.id') }).orderBy('time').limit(1)
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+')') }).where(pg.sql('first_msg IS NULL')).run(gen.ef());
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yield pg.delete('threads').where(pg.sql('first_msg IS NULL')).run(gen.ef());
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}
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Syncer.runFetch = function*(what, params, boxId, processor)
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{
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var self = this;
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var f = self.srv.fetch(what, params);
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self.parsed = 0;
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self.paused = false;
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self.synced = 0;
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self.pending = [];
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self.results = [];
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var cb, wait;
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f.on('message', function(msg, seqnum)
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{
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gen.run(self.onMessage(msg, seqnum, boxId, processor), checkFinish, function(e) { checkFinish(); throw e; });
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});
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cb = gen.cb();
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yield f.once('end', function()
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{
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wait = true;
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if (self.parsed <= 0)
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cb();
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else if (self.pending.length > 0)
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{
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var result = gen.run(self[processor](self.pending, boxId), saveLast, function(e) { saveLast(); throw e; });
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if (result)
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self.results = self.results.concat(result);
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}
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});
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if (self.results.length > 0)
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{
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let r = self.results;
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delete self.results;
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return r;
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}
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function saveLast()
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{
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self.parsed -= self.pending.length;
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self.pending = [];
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checkFinish();
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}
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function checkFinish()
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{
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if (self.parsed <= 0 && wait)
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cb();
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}
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};
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Syncer.onMessage = function*(msg, seqnum, boxId, processor)
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{
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var self = this;
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var [ msgrow, attrs ] = yield* self.parseMessage(msg, seqnum, boxId);
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self.pending.push([ msgrow, attrs ]);
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self.parsed++;
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if (!self.paused && self.parsed >= 100)
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{
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// ГОРШОЧЕК, НЕ ВАРИ!!! И так уже кучу сообщений прочитал из сокета, хорош!
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self.srv._parser._ignoreReadable = true;
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self.paused = true;
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}
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if (self.pending.length >= 100)
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{
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var m = self.pending;
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self.pending = [];
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var err;
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var result;
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try
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{
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result = yield gen.run(self[processor](m, boxId), gen.cb());
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if (result)
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self.results = self.results.concat(result);
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}
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catch (e)
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{
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err = e;
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}
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self.parsed -= m.length;
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if (self.paused && self.parsed < 100)
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{
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self.paused = false;
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self.srv._parser._ignoreReadable = false;
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process.nextTick(self.srv._parser._cbReadable);
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}
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if (err)
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throw err;
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}
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}
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Syncer.parseMessage = function*(msg, seqnum, boxId)
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{
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var msgrow = {};
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var attrs;
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msg.on('body', function(stream, info)
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{
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var buffer;
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stream.on('data', function(chunk)
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{
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if (!buffer)
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buffer = chunk;
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else
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buffer = Buffer.concat([ buffer, chunk ]);
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});
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stream.once('end', function()
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{
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var b = buffer.toString('utf8');
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if (b.indexOf('<27>') >= 0)
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{
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let enc = /Content-type:\s*[^;\n]*;\s*charset=(\S+)/i.exec(b);
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enc = enc ? enc[1] : 'windows-1251';
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try { b = iconv.decode(buffer, enc); }
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catch (e) {}
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}
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if (b.indexOf('\0') >= 0)
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b = b.substr(0, b.indexOf('\0'));
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msgrow.headers = b;
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});
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||
});
|
||
msg.once('attributes', function(a) {
|
||
attrs = a;
|
||
});
|
||
yield msg.once('end', gen.cb());
|
||
msgrow.uid = attrs.uid;
|
||
msgrow.folder_id = boxId;
|
||
msgrow.flags = attrs.flags.map(f => f[0] == '\\' ? f.toLowerCase().replace(/^\\/, '') : f.replace(/^\$*/, '$'));
|
||
var nf = msgrow.flags.filter(f => f != 'seen');
|
||
msgrow.flags = nf.length == msgrow.flags.length ? nf.concat(['unread']) : nf;
|
||
// Workaround memory leak in node-imap
|
||
// TODO: send pull request
|
||
if (this.srv._curReq && this.srv._curReq.fetchCache)
|
||
delete this.srv._curReq.fetchCache[seqnum];
|
||
return [ msgrow, attrs ];
|
||
}
|
||
|
||
Syncer.updateFlags = function*(messages, boxId)
|
||
{
|
||
yield gen.throttle(3);
|
||
var self = this;
|
||
var rows = messages.map(m => ({
|
||
uid: m[0].uid,
|
||
flags: toPgArray(m[0].flags)
|
||
}));
|
||
var [ updated ] = yield pg.update('messages m', { flags: pg.sql('t.flags::varchar(255)[]'), vertag: self.versionTag })
|
||
.from('('+pg.sql.values(rows)+') AS t (uid, flags)')
|
||
.where({ 'm.folder_id': boxId }).where(pg.sql('m.uid=t.uid')).returning('m.uid').rows(gen.ef());
|
||
var uh = {}, i;
|
||
for (i = 0; i < updated.length; i++)
|
||
uh[updated[i].uid] = true;
|
||
for (i = 0; i < messages.length; i++)
|
||
if (!uh[messages[i][0].uid])
|
||
self.missing.push(messages[i][0].uid);
|
||
self.synced += messages.length;
|
||
process.stderr.write('\rsynchronizing '+self.synced);
|
||
}
|
||
|
||
Syncer.saveMessages = function*(messages, boxId)
|
||
{
|
||
var self = this;
|
||
yield gen.throttle(2);
|
||
var uids = messages.map(m => m[1].uid);
|
||
var [ exist ] = yield pg.select('uid, flags').from('messages')
|
||
.where({ folder_id: boxId }).where(pg.sql.in('uid', uids)).rows(gen.ef());
|
||
uids = {};
|
||
for (var i = 0; i < exist.length; i++)
|
||
uids[exist[i].uid] = true;
|
||
for (var i = 0; i < messages.length; i++)
|
||
if (!uids[messages[i][1].uid])
|
||
yield* this.addMessage(messages[i][0], messages[i][1]);
|
||
}
|
||
|
||
Syncer.addMessage = function*(msgrow, attrs)
|
||
{
|
||
var self = this;
|
||
var pgtx, end_transaction;
|
||
try
|
||
{
|
||
[ pgtx, end_transaction ] = yield pg.transaction(gen.cb(), function(e) { if (e) throw e; });
|
||
|
||
var header = Imap.parseHeader(msgrow.headers);
|
||
for (var i in header)
|
||
for (var k = 0; k < header[i].length; k++)
|
||
header[i][k] = header[i][k].replace(/\x00/g, '');
|
||
header.from = header.from && splitEmails(header.from[0])[0];
|
||
header.replyto = header['reply-to'] && splitEmails(header['reply-to'][0])[0];
|
||
var re = /(<[^>]*>)/;
|
||
header.references = (header.references && header.references[0] || '').split(re).filter(a => a.match(re));
|
||
if (header.references.length)
|
||
{
|
||
if (header.references.length > 10)
|
||
header.references = [ header.references[0] ].concat(header.references.slice(header.references.length-9));
|
||
if (!header['in-reply-to'] || !header['in-reply-to'][0])
|
||
header['in-reply-to'] = [ header.references[header.references.length-1] ];
|
||
else if (header.references[header.references.length-1] != header['in-reply-to'][0])
|
||
header.references.push(header['in-reply-to'][0]);
|
||
}
|
||
if (header.date)
|
||
{
|
||
var t = Date.parse(header.date[0]);
|
||
if (!isNaN(t))
|
||
header.date = new Date(t);
|
||
else
|
||
header.date = null;
|
||
}
|
||
if (!header.date)
|
||
header.date = new Date(attrs.date);
|
||
|
||
msgrow.from_email = header.from && header.from.email || '';
|
||
msgrow.from_name = header.from && header.from.name || '';
|
||
msgrow.replyto_email = header.replyto && header.replyto.email || '';
|
||
msgrow.replyto_name = header.replyto && header.replyto.name || '';
|
||
msgrow.to_list = header.to && header.to[0] || '';
|
||
msgrow.cc_list = header.cc && header.cc[0] || '';
|
||
msgrow.bcc_list = header.bcc && header.bcc[0] || '';
|
||
msgrow.subject = header.subject && header.subject[0] || '';
|
||
msgrow.messageid = header['message-id'] && header['message-id'][0] || '';
|
||
msgrow.inreplyto = header['in-reply-to'] && header['in-reply-to'][0] || '';
|
||
msgrow.inreplyto = msgrow.inreplyto.replace(/^[\s\S]*(<[^>]*>)[\s\S]*$/, '$1');
|
||
msgrow.time = header.date;
|
||
msgrow.flags = toPgArray(msgrow.flags);
|
||
msgrow.refs = toPgArray(header.references);
|
||
msgrow.vertag = self.versionTag;
|
||
|
||
var thisIsFirst = false;
|
||
if (header.references.length)
|
||
{
|
||
let [ threadId ] = yield pgtx.select('MAX(thread_id)').from('messages')
|
||
.where(pg.sql.in('messageid', header.references)).val(gen.ef());
|
||
if (!threadId)
|
||
{
|
||
[ threadId ] = yield pgtx.select('MAX(thread_id)').from('messages')
|
||
.where(new pg.sql.Binary('@>', 'refs', toPgArray([msgrow.messageid]))).val(gen.ef());
|
||
if (threadId)
|
||
thisIsFirst = true;
|
||
}
|
||
msgrow.thread_id = threadId;
|
||
}
|
||
console.log(msgrow.time+' '+msgrow.from_email+' '+msgrow.subject);
|
||
[ msgrow.id ] = yield pgtx.insert('messages', msgrow).returning('id').val(gen.ef());
|
||
if (!msgrow.thread_id)
|
||
{
|
||
[ msgrow.thread_id ] = yield pgtx.insert('threads', {
|
||
first_msg: msgrow.id,
|
||
msg_count: 1
|
||
}).returning('id').val(gen.ef());
|
||
yield pgtx.update('messages', { thread_id: msgrow.thread_id }).where({ id: msgrow.id }).run(gen.ef());
|
||
}
|
||
else
|
||
{
|
||
let upd = pgtx.update('threads', { msg_count: pg.sql('msg_count+1') });
|
||
if (thisIsFirst)
|
||
upd.first_msg = msgrow.id;
|
||
yield upd.where({ id: msgrow.threadId }).run(gen.ef());
|
||
}
|
||
|
||
end_transaction();
|
||
}
|
||
catch (e0)
|
||
{
|
||
if (end_transaction)
|
||
end_transaction();
|
||
throw e0;
|
||
}
|
||
}
|
||
|
||
Syncer.app.listen(8057);
|
||
|
||
gen.run(function*()
|
||
{
|
||
for (var i = 0; i < cfg.accounts.length; i++)
|
||
yield* Syncer.sync(cfg.accounts[i]);
|
||
});
|
||
|
||
function genRequest(fn)
|
||
{
|
||
return (req, res) => gen.run(fn(req, res), null, e => res.status(500).send('Internal Error: '+e));
|
||
}
|
||
|
||
function splitEmails(s)
|
||
{
|
||
var re = /^[\s,]*(?:(?:["'](.*?)["']|([^<]+))\s*<([^>]+)>|<?([^<>]+)>?)/; // '
|
||
var m, r = [];
|
||
while (m = re.exec(s))
|
||
{
|
||
s = s.substr(m[0].length);
|
||
r.push({ name: (m[1]||m[2]||'').trim(), email: (m[3]||m[4]||'').trim() });
|
||
}
|
||
return r;
|
||
}
|
||
|
||
function toPgArray(a)
|
||
{
|
||
a = JSON.stringify(a);
|
||
return '{'+a.substring(1, a.length-1)+'}';
|
||
}
|