express-anti-leech

Anti leech for express website.

What is Leech?

Direct linking (or hot-linking) is a form of bandwidth leeching that occurs when placing an unauthorized linked object, often an image, from one site in a web page belonging to a second site (the leech).

Leech (computing) wiki http://en.wikipedia.org/wiki/Leech_(computing)

Install

npm install express-anti-leech

Example

var express = require('express'),
  path = require('path'),
  app = express();

var AntiLeech = require('express-anti-leech');

// white list
var hosts = ['localhost', 'localhost:8004'];

// filter type
var exts = ['.png', '.jpg', '.jpeg', '.gif', '.swf', '.flv'];

// default show picture
var pictrue = "/images/default.png";

app.use(AntiLeech({
  allow: hosts,
  exts: exts,
  log: console.log, // you can use your own
  default: pictrue
}));

// keep AntiLeech before use static
app.use(express.static(path.join(__dirname, 'public')));
app.set('port', process.env.PORT || 8004);

app.get('/', function(req, res) {
  res.redirect("/index.html");
});

app.listen(app.get('port'), function() {
  console.log("Express test server listening on http://localhost:" + app.get('port'));
});