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'use strict';
var common = require('../common');
var assert = require('assert');
var spawn = require('child_process').spawn;
if (!common.hasCrypto) {
console.log('1..0 # Skipped: missing crypto');
process.exit();
}
var tls = require('tls');
var https = require('https');
var fs = require('fs');
if (!common.opensslCli) {
console.error('Skipping because node compiled without OpenSSL CLI.');
process.exit(0);
}
// renegotiation limits to test
var LIMITS = [0, 1, 2, 3, 5, 10, 16];
(function() {
var n = 0;
function next() {
if (n >= LIMITS.length) return;
tls.CLIENT_RENEG_LIMIT = LIMITS[n++];
test(next);
}
next();
})();
function test(next) {
var options = {
cert: fs.readFileSync(common.fixturesDir + '/test_cert.pem'),
key: fs.readFileSync(common.fixturesDir + '/test_key.pem')
};
var seenError = false;
var server = https.createServer(options, function(req, res) {
var conn = req.connection;
conn.on('error', function(err) {
console.error('Caught exception: ' + err);
assert(/TLS session renegotiation attack/.test(err));
conn.destroy();
seenError = true;
});
res.end('ok');
});
server.listen(common.PORT, function() {
var args = ('s_client -connect 127.0.0.1:' + common.PORT).split(' ');
var child = spawn(common.opensslCli, args);
//child.stdout.pipe(process.stdout);
//child.stderr.pipe(process.stderr);
child.stdout.resume();
child.stderr.resume();
// count handshakes, start the attack after the initial handshake is done
var handshakes = 0;
var renegs = 0;
child.stderr.on('data', function(data) {
if (seenError) return;
handshakes += (('' + data).match(/verify return:1/g) || []).length;
if (handshakes === 2) spam();
renegs += (('' + data).match(/RENEGOTIATING/g) || []).length;
});
child.on('exit', function() {
assert.equal(renegs, tls.CLIENT_RENEG_LIMIT + 1);
server.close();
process.nextTick(next);
});
var closed = false;
child.stdin.on('error', function(err) {
switch (err.code) {
case 'ECONNRESET':
case 'EPIPE':
break;
default:
assert.equal(err.code, 'ECONNRESET');
break;
}
closed = true;
});
child.stdin.on('close', function() {
closed = true;
});
// simulate renegotiation attack
function spam() {
if (closed) return;
child.stdin.write('R\n');
setTimeout(spam, 50);
}
});
}
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