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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
'use strict';
const common = require('../common');
const assert = require('assert');
const spawn = require('child_process').spawn;
if (!common.hasCrypto) {
common.skip('missing crypto');
return;
}
const tls = require('tls');
const https = require('https');
const fs = require('fs');
if (!common.opensslCli) {
common.skip('node compiled without OpenSSL CLI.');
return;
}
// renegotiation limits to test
const LIMITS = [0, 1, 2, 3, 5, 10, 16];
{
let n = 0;
function next() {
if (n >= LIMITS.length) return;
tls.CLIENT_RENEG_LIMIT = LIMITS[n++];
test(next);
}
next();
}
function test(next) {
const options = {
cert: fs.readFileSync(`${common.fixturesDir}/test_cert.pem`),
key: fs.readFileSync(`${common.fixturesDir}/test_key.pem`)
};
let seenError = false;
const server = https.createServer(options, function(req, res) {
const conn = req.connection;
conn.on('error', function(err) {
console.error(`Caught exception: ${err}`);
assert(/TLS session renegotiation attack/.test(err));
conn.destroy();
seenError = true;
});
res.end('ok');
});
server.listen(common.PORT, function() {
const args = (`s_client -connect 127.0.0.1:${common.PORT}`).split(' ');
const 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
let handshakes = 0;
let renegs = 0;
child.stderr.on('data', function(data) {
if (seenError) return;
handshakes += ((String(data)).match(/verify return:1/g) || []).length;
if (handshakes === 2) spam();
renegs += ((String(data)).match(/RENEGOTIATING/g) || []).length;
});
child.on('exit', function() {
assert.strictEqual(renegs, tls.CLIENT_RENEG_LIMIT + 1);
server.close();
process.nextTick(next);
});
let closed = false;
child.stdin.on('error', function(err) {
switch (err.code) {
case 'ECONNRESET':
case 'EPIPE':
break;
default:
assert.strictEqual(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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