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server.js
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server.js
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var fs = require('fs');
var express = require('express');
var app = express();
var http = require('http').Server(app);
var io = require('socket.io')(http);
var exec = require('child_process').exec;
var tmp = require('tmp');
tmp.setGracefulCleanup();
app.set('port', (process.env.PORT || 9001));
app.use(express.static('static'));
var uploadurl = 'http://images.google.com/searchbyimage/upload';
io.on('connection', function (socket) {
socket.on('image_upload', function (data) {
var opts = { postfix: '.' + data['fext'] };
tmp.file(opts, function (err, path, fd, cleanupCallback) {
if (err) throw err;
var buffer = data['fbuf'];
fs.write(fd, buffer, 0, buffer.length);
fs.close(fd, function (err) {
if (err) throw err;
var cmd = ['curl', '-s', '-F', 'encoded_image=@' + path, uploadurl]
.join(' ');
exec(cmd, function (err, stdout, stderr) {
var arr = /HREF="(.+)"/gi.exec(stdout);
if (arr != null) {
socket.emit('image_search', { url: arr[1],
fname: data['fname'] });
}
});
});
});
});
});
http.listen(app.get('port'));