'use strict'; var common = require('../common'); var assert = require('assert'); if (!common.hasCrypto) { common.skip('missing crypto'); return; } var tls = require('tls'); var spawn = require('child_process').spawn; var fs = require('fs'); var key = fs.readFileSync(common.fixturesDir + '/keys/agent2-key.pem'); var cert = fs.readFileSync(common.fixturesDir + '/keys/agent2-cert.pem'); var nsuccess = 0; var ntests = 0; var ciphers = 'DHE-RSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256'; function loadDHParam(n) { var path = common.fixturesDir; if (n !== 'error') path += '/keys'; return fs.readFileSync(path + '/dh' + n + '.pem'); } function test(keylen, expectedCipher, cb) { var options = { key: key, cert: cert, ciphers: ciphers, dhparam: loadDHParam(keylen) }; var server = tls.createServer(options, function(conn) { conn.end(); }); server.on('close', function(err) { assert(!err); if (cb) cb(); }); server.listen(0, '127.0.0.1', function() { var args = ['s_client', '-connect', `127.0.0.1:${this.address().port}`, '-cipher', ciphers]; // for the performance and stability issue in s_client on Windows if (common.isWindows) args.push('-no_rand_screen'); var client = spawn(common.opensslCli, args); var out = ''; client.stdout.setEncoding('utf8'); client.stdout.on('data', function(d) { out += d; }); client.stdout.on('end', function() { // DHE key length can be checked -brief option in s_client but it // is only supported in openssl 1.0.2 so we cannot check it. var reg = new RegExp('Cipher : ' + expectedCipher); if (reg.test(out)) { nsuccess++; server.close(); } }); }); } function test512() { assert.throws(function() { test(512, 'DHE-RSA-AES128-SHA256', null); }, /DH parameter is less than 1024 bits/); } function test1024() { test(1024, 'DHE-RSA-AES128-SHA256', test2048); ntests++; } function test2048() { test(2048, 'DHE-RSA-AES128-SHA256', testError); ntests++; } function testError() { test('error', 'ECDHE-RSA-AES128-SHA256', test512); ntests++; } test1024(); process.on('exit', function() { assert.equal(ntests, nsuccess); assert.equal(ntests, 3); });