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const http = require('http');
const mime = require('mime');
const url = require('url');
const fs = require('fs');
const moment = require('moment');
const config = require('../config');
const threads = require('../data/threads');
const attachments = require('../data/attachments');
const {THREAD_MESSAGE_TYPE} = require('../data/constants');
function notfound(res) {
res.statusCode = 404;
res.end('Page Not Found');
}
async function serveLogs(res, pathParts) {
const threadId = pathParts[pathParts.length - 1];
if (threadId.match(/^[0-9a-f\-]+$/) === null) return notfound(res);
const thread = await threads.findById(threadId);
if (! thread) return notfound(res);
const threadMessages = await thread.getThreadMessages();
const lines = threadMessages.map(message => {
// Legacy messages are the entire log in one message, so just serve them as they are
if (message.message_type === THREAD_MESSAGE_TYPE.LEGACY) {
return message.body;
}
let line = `[${moment.utc(message.created_at).format('YYYY-MM-DD HH:mm:ss')}] `;
if (message.message_type === THREAD_MESSAGE_TYPE.SYSTEM) {
// System messages don't need the username
line += message.body;
} else if (message.message_type === THREAD_MESSAGE_TYPE.FROM_USER) {
line += `[FROM USER] ${message.user_name}: ${message.body}`;
} else if (message.message_type === THREAD_MESSAGE_TYPE.TO_USER) {
line += `[TO USER] ${message.user_name}: ${message.body}`;
} else {
line += `${message.user_name}: ${message.body}`;
}
return line;
});
res.setHeader('Content-Type', 'text/plain; charset=UTF-8');
res.end(lines.join('\n'));
}
function serveAttachments(res, pathParts) {
const desiredFilename = pathParts[pathParts.length - 1];
const id = pathParts[pathParts.length - 2];
if (id.match(/^[0-9]+$/) === null) return notfound(res);
if (desiredFilename.match(/^[0-9a-z._-]+$/i) === null) return notfound(res);
const attachmentPath = attachments.getLocalAttachmentPath(id);
fs.access(attachmentPath, (err) => {
if (err) return notfound(res);
const filenameParts = desiredFilename.split('.');
const ext = (filenameParts.length > 1 ? filenameParts[filenameParts.length - 1] : 'bin');
const fileMime = mime.getType(ext);
res.setHeader('Content-Type', fileMime);
const read = fs.createReadStream(attachmentPath);
read.pipe(res);
})
}
module.exports = () => {
const server = http.createServer((req, res) => {
const parsedUrl = url.parse(`http://${req.url}`);
const pathParts = parsedUrl.path.split('/').filter(v => v !== '');
if (parsedUrl.path.startsWith('/logs/')) {
serveLogs(res, pathParts);
} else if (parsedUrl.path.startsWith('/attachments/')) {
serveAttachments(res, pathParts);
} else {
notfound(res);
}
});
server.on('error', err => {
console.log('[WARN] Web server error:', err.message);
});
server.listen(config.port);
};
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