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superupload.js
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superupload.js
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var http = require('http');
var url = require('url');
var formidable = require('./lib/formidable');
var sys = require('sys');
var fs = require('fs');
var crypto = require('crypto');
var paperboy = require('./lib/paperboy');
var temp_path = './tmp';
var public_path = './public';
var upload_dir = 'uploads';
var upload_path = path.join(path.dirname(__filename), public_path + '/' + upload_dir);
var view_path = './views';
var view_cache = {};
var progress_cache = {};
var filename_cache = {};
var description_cache = {};
// HTTP Server
var server = http.createServer(function(req, res) {
// Simple Router
switch (true) {
case req.url == '/':
index(req, res);
break;
case RegExp('/upload/(.+)').test(req.url) && req.method.toUpperCase() == 'POST':
upload(req, res, RegExp.$1);
break;
case RegExp('/description/(.+)').test(req.url) && req.method.toUpperCase() == 'POST':
description(req, res, RegExp.$1);
break;
case RegExp('/progress/(.+)').test(req.url) && req.method.toUpperCase() == 'GET':
progress(req, res, RegExp.$1);
break;
default:
// Static content + 404
paperboy
.deliver(path.join(path.dirname(__filename), public_path), req, res)
break;
}
});
// Start server
server.listen(1337);
// Render view file in view_path. Replace %placeholders% with locals.
function render_view(view_name, locals){
var view = view_cache[view_name];
if(!view) {
view = fs.readFileSync(view_path + '/' + view_name + '.view.html').toString();
view_cache[view_name] = view;
}
if (locals != 'undefined') {
for (l in locals) {
var searchfor = '%' + l + '%';
view = view.replace(new RegExp(searchfor, 'g'), locals[l]);
}
}
return view;
}
// Genearte UUID based on remote address
function gen_uuid(remote_addr) {
var random = '';
for (var i=0; i < 32; i++) {
random += Math.floor(Math.random() * 16).toString(16);
}
return crypto.createHash('md5').update(random + remote_addr).digest('hex');
}
// Show upload form
function index(req, res) {
//IE Cache Fix
res.writeHeader(200, {'Content-Type': 'text/html',
'Cache-Control': 'no-cache, no-store, max-age=0, must-revalidate',
'Pragma' : 'no-cache', 'Expires': 'Fri, 01 Jan 1990 00:00:00 GMT'});
// No collisions
do {
uuid = gen_uuid(req.connection.remoteAddress);
} while(progress_cache[uuid]);
var locals = {};
locals['UUID'] = uuid;
progress_cache[uuid] = 'ready';
res.write(render_view('index', locals));
res.end();
}
// Upload
function upload(req, res, params) {
if(progress_cache[params] != 'ready') {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.write('Invalid Upload UUID :(');
res.end();
return;
}
var form = new formidable.IncomingForm();
filename_cache[params] = 'uploading';
form.uploadDir = temp_path;
form.addListener('progress', function(rec, tot) {
var progress = parseInt(rec / tot * 100);
progress_cache[params] = progress;
});
form.parse(req, function(err, fields, files) {
if(err) {
delete progress_cache[params];
res.writeHead(200, {'Content-Type': 'text/plain'});
res.write('Error :(');
res.end();
return;
}
var filename = files['file']['filename'];
var filepath = files['file']['path'];
fs.mkdirSync(upload_path + '/' + params, 0755);
fs.renameSync(filepath, upload_path + '/' + params + '/' + filename);
filename_cache[params] = filename;
res.writeHead(200, {'Content-Type': 'text/plain'});
res.write('OK :)');
res.end();
});
}
// Progress AJAX
function progress(req, res, params) {
if(!progress_cache[params]) {
res.writeHead(200, {'Content-Type': 'application/json'});
res.write(JSON.stringify({'progress': 0, 'path': '#'}));
res.end();
return;
}
var path = '/' + upload_dir + '/' + params + '/' + filename_cache[params];
if(!filename_cache[params] || filename_cache[params] == 'uploading') {
path = '#';
}
// IE Cache Fix
res.writeHead(200, {'Content-Type': 'application/json',
'Cache-Control': 'no-cache, no-store, max-age=0, must-revalidate',
'Pragma' : 'no-cache', 'Expires': 'Fri, 01 Jan 1990 00:00:00 GMT'});
res.write(JSON.stringify({'progress': progress_cache[params],
'path': path }));
res.end();
}
// Description
function description(req, res, params) {
if(progress_cache[params] != 100) {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.write('Invalid Upload UUID :(');
res.end();
return;
}
delete progress_cache[params];
var form = new formidable.IncomingForm();
form.type = 'urlencoded';
form.encoding = 'utf-8';
form.parse(req, function(err, fields, files) {
var description = fields['description'];
description_cache[params] = description;
var locals = {};
locals['PATH'] = '/' + upload_dir + '/' + params + '/' + filename_cache[params];
locals['DESCRIPTION'] = description;
res.writeHeader(200, {'Content-Type': 'text/html'});
res.write(render_view('description', locals));
res.end();
});
}