225 lines
7.5 KiB
JavaScript
225 lines
7.5 KiB
JavaScript
const gen = require('gen-thread');
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const MailParser = require('mailparser').MailParser;
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const htmlawed = require('htmlawed');
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const http = require('http');
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const socket_io = require('socket.io');
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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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const css = require('css');
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module.exports = SyncerWeb;
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function SyncerWeb(syncer, pg, cfg)
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{
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this.syncer = syncer;
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this.pg = pg;
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this.cfg = cfg;
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this.app = express();
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this.http = http.Server(this.app);
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this.io = socket_io(this.http);
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this.app.use(bodyparser.urlencoded({ extended: false }));
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this.app.use(express_session({
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secret: this.cfg.sessionSecret || '1083581xm1l3s1l39k',
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resave: false,
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saveUninitialized: false
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}));
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this.app.get('/auth', this.get_auth);
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this.app.post('/auth', this.post_auth);
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this.app.get('/folders', genRequest(this.get_folders.bind(this)));
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this.app.get('/messages', genRequest(this.get_messages.bind(this)));
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this.app.get('/message', genRequest(this.get_message.bind(this)));
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this.app.post('/sync', genRequest(this.post_sync.bind(this)));
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this.syncer.events.on('sync', this.syncer_sync.bind(this));
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}
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SyncerWeb.prototype.listen = function(port)
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{
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this.http.listen(port);
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}
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SyncerWeb.prototype.get_auth = function(req, res)
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{
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return res.type('html').send(
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'<form action="/auth" method="post"><input name="login" />'+
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' <input name="password" type="password" /> <input type="submit" /></form>'
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);
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}
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SyncerWeb.prototype.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 == this.cfg.login && req.body.password == this.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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SyncerWeb.prototype.get_folders = function*(req, res)
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{
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if (this.cfg.login && (!req.session || !req.session.auth))
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{
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return res.sendStatus(401);
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}
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var [ accounts ] = yield this.pg.select(
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'id, name, email, settings->\'folders\' folderMap,'+
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' (select count(*) from messages m, folders f where m.folder_id=f.id and f.account_id=a.id and (flags @> array[\'pinned\',\'unread\']::varchar(255)[])) pinned_unread_count'
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).from('accounts a').rows(gen.ef());
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var [ folders ] = yield this.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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SyncerWeb.prototype.get_messages = function*(req, res)
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{
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if (this.cfg.login && (!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 this.pg.select('*').from('messages').where({ folder_id: folderId })
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.orderBy('time desc').limit(limit).offset(offset).rows(gen.ef());
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for (var i = 0; i < msgs.length; i++)
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{
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delete msgs[i].text_index;
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}
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return res.send({ messages: msgs });
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}
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SyncerWeb.prototype.get_message = function*(req, res)
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{
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if (this.cfg.login && (!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 this.pg.select('m.*, f.name folder_name, f.account_id')
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.from('messages m').join('folders f', this.pg.sql('f.id=m.folder_id'))
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.where({ 'm.id': msgId }).rows(gen.ef());
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if (!msg.length)
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return res.send({ error: 'not-found' });
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msg = msg[0];
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delete msg.text_index;
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if (!msg.body_html && !msg.body_text)
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{
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var srv = yield* this.syncer.imap.getConnection(msg.account_id, msg.folder_name);
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var [ upd ] = yield* this.syncer.imap.runFetch(
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srv, msg.uid, { bodies: '' },
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(messages, state) => getBody(this.pg, messages, msg.folder_id)
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);
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this.syncer.imap.releaseConnection(msg.account_id);
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return res.send({ msg: { ...msg, ...upd } });
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}
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return res.send({ msg: msg });
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}
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SyncerWeb.prototype.syncer_sync = function(params)
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{
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this.io.emit('sync', params);
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}
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SyncerWeb.prototype.post_sync = function*(req, res)
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{
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if (this.cfg.login && (!req.session || !req.session.auth))
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return res.sendStatus(401);
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if (this.syncer.syncInProgress)
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return res.send({ error: 'already-running' });
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gen.run(this.syncer.syncAll());
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return res.send({ status: 'started' });
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}
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function rewriteCss(ast)
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{
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var rules = ast.rules || ast.stylesheet && ast.stylesheet.rules;
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if (rules)
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{
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for (var i = 0; i < rules.length; i++)
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{
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if (rules[i].type == 'document')
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{
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// prune @document instructions (may spy on current URL)
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rules.splice(i--, 1);
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}
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else
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rewriteCss(rules[i]);
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}
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}
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else if (ast.type == 'rule')
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{
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for (var i = 0; i < ast.selectors.length; i++)
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{
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// FIXME: Do not hardcode css selector for frontend here
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// This will require generating unique substitution string,
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// so we may also generate 'blocked images' stubs when we do it.
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ast.selectors[i] = '.message-view .text '+ast.selectors[i];
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}
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}
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}
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function sanitizeHtml(html)
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{
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let styles = '';
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html = (html||'').replace(/<style[^<>]*>([\s\S]*?)<\/style\s*>/ig, function(m, m1)
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{
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styles += m1+'\n';
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return '';
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});
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html = html.replace(/^[\s\S]*?<body[^<>]*>([\s\S]*)<\/body>[\s\S]*$/i, '$1');
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html = html.replace(/^[\s\S]*?<html[^<>]*>([\s\S]*)<\/html>[\s\S]*$/i, '$1');
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if (styles)
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{
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html = '<style>\n'+styles+'</style>\n'+html;
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styles = '';
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}
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html = htmlawed.sanitize(html||'', { safe: 1, elements: '* +style', keep_bad: 0, comment: 1 });
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html = html.replace(/<style[^>]*>([\s\S]*)<\/style\s*>/ig, function(m, m1)
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{
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var ast = css.parse(m1, { silent: true });
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rewriteCss(ast);
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return '<style>'+css.stringify(ast)+'</style>';
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});
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return html;
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}
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function* getBody(pg, messages, boxId)
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{
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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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obj.html = sanitizeHtml(obj.html);
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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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function genRequest(fn)
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{
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return (req, res) => gen.run(fn(req, res), null, e => res.status(500).send('Internal Error: '+e.stack));
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}
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