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100 lines
3.2 KiB
100 lines
3.2 KiB
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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var common = require('../common');
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var assert = require('assert');
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var spawn = require('child_process').spawn;
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var tls = require('tls');
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var fs = require('fs');
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// renegotiation limits to test
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var LIMITS = [0, 1, 2, 3, 5, 10, 16];
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if (process.platform === 'win32') {
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console.log('Skipping test, you probably don\'t have openssl installed.');
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process.exit();
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}
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(function() {
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var n = 0;
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function next() {
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if (n >= LIMITS.length) return;
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tls.CLIENT_RENEG_LIMIT = LIMITS[n++];
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test(next);
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}
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next();
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})();
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function test(next) {
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var options = {
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cert: fs.readFileSync(common.fixturesDir + '/test_cert.pem'),
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key: fs.readFileSync(common.fixturesDir + '/test_key.pem')
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};
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var server = tls.createServer(options, function(conn) {
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conn.on('error', function(err) {
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console.error('Caught exception: ' + err);
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assert(/TLS session renegotiation attack/.test(err));
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conn.destroy();
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});
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conn.pipe(conn);
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});
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server.listen(common.PORT, function() {
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var args = ('s_client -connect 127.0.0.1:' + common.PORT).split(' ');
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var child = spawn('openssl', args);
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child.stdout.pipe(process.stdout);
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child.stderr.pipe(process.stderr);
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// count handshakes, start the attack after the initial handshake is done
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var handshakes = 0;
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child.stderr.on('data', function(data) {
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handshakes += (('' + data).match(/verify return:1/g) || []).length;
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if (handshakes === 2) spam();
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});
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child.on('exit', function() {
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// with a renegotiation limit <= 1, we always see 4 handshake markers:
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// two for the initial handshake and another two for the attempted
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// renegotiation
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assert.equal(handshakes, 2 * Math.max(2, tls.CLIENT_RENEG_LIMIT));
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server.close();
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process.nextTick(next);
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});
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var closed = false;
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child.stdin.on('error', function(err) {
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assert.equal(err.code, 'EPIPE');
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closed = true;
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});
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child.stdin.on('close', function() {
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closed = true;
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});
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// simulate renegotiation attack
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function spam() {
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if (closed) return;
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child.stdin.write('R\n');
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setTimeout(spam, 250);
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}
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});
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}
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