nodeshot.js

var sys           = require('sys'),
    http          = require('http'),
    urlModule     = require('url'),
    querystring   = require('querystring');

http.createServer(function(req, res) {
  var urlObj  = urlModule.parse(req.url),
      params  = querystring.parse(urlObj.query),
      url     = params.url,
      dest    = 'images/' + new Date().getTime() + '.png';
  
  if (!(url && url.substr(0, 4) == 'http')) {
    sys.puts("invalid url");
    res.sendHeader(204);
    res.close();
    return;
  }
  
  sys.puts('capturing: ' + url);
  
  sys.exec(
    'xvfb-run -a CutyCapt --max-wait=10000 --url=' + url + ' --out=' + dest
  ).addCallback(function() {
    res.sendHeader(301, { 'Location': 'http://nodeshot.tifftiff.de/' + dest });
    res.close();
  });
}).listen(8000);