/usr/lib/nodejs/connect/middleware/basicAuth.js is in node-connect 1.7.3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Connect - basicAuth
* Copyright(c) 2010 Sencha Inc.
* Copyright(c) 2011 TJ Holowaychuk
* MIT Licensed
*/
/**
* Module dependencies.
*/
var utils = require('../utils')
, unauthorized = utils.unauthorized
, badRequest = utils.badRequest;
/**
* Enfore basic authentication by providing a `callback(user, pass)`,
* which must return `true` in order to gain access. Alternatively an async
* method is provided as well, invoking `callback(user, pass, callback)`. Populates
* `req.remoteUser`. The final alternative is simply passing username / password
* strings.
*
* Examples:
*
* connect(connect.basicAuth('username', 'password'));
*
* connect(
* connect.basicAuth(function(user, pass){
* return 'tj' == user & 'wahoo' == pass;
* })
* );
*
* connect(
* connect.basicAuth(function(user, pass, fn){
* User.authenticate({ user: user, pass: pass }, fn);
* })
* );
*
* @param {Function|String} callback or username
* @param {String} realm
* @api public
*/
module.exports = function basicAuth(callback, realm) {
var username, password;
// user / pass strings
if ('string' == typeof callback) {
username = callback;
password = realm;
if ('string' != typeof password) throw new Error('password argument required');
realm = arguments[2];
callback = function(user, pass){
return user == username && pass == password;
}
}
realm = realm || 'Authorization Required';
return function(req, res, next) {
var authorization = req.headers.authorization;
if (req.remoteUser) return next();
if (!authorization) return unauthorized(res, realm);
var parts = authorization.split(' ')
, scheme = parts[0]
, credentials = new Buffer(parts[1], 'base64').toString().split(':');
if ('Basic' != scheme) return badRequest(res);
// async
if (callback.length >= 3) {
var pause = utils.pause(req);
callback(credentials[0], credentials[1], function(err, user){
if (err || !user) return unauthorized(res, realm);
req.remoteUser = user;
next();
pause.resume();
});
// sync
} else {
if (callback(credentials[0], credentials[1])) {
req.remoteUser = credentials[0];
next();
} else {
unauthorized(res, realm);
}
}
}
};
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