1#! /usr/bin/env perl 2# Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved. 3# 4# Licensed under the OpenSSL license (the "License"). You may not use 5# this file except in compliance with the License. You can obtain a copy 6# in the file LICENSE in the source distribution or at 7# https://www.openssl.org/source/license.html 8 9use strict; 10use OpenSSL::Test qw/:DEFAULT cmdstr srctop_file bldtop_dir/; 11use OpenSSL::Test::Utils; 12use TLSProxy::Proxy; 13 14my $test_name = "test_tls13hrr"; 15setup($test_name); 16 17plan skip_all => "TLSProxy isn't usable on $^O" 18 if $^O =~ /^(VMS)$/; 19 20plan skip_all => "$test_name needs the dynamic engine feature enabled" 21 if disabled("engine") || disabled("dynamic-engine"); 22 23plan skip_all => "$test_name needs the sock feature enabled" 24 if disabled("sock"); 25 26plan skip_all => "$test_name needs TLS1.3 enabled" 27 if disabled("tls1_3"); 28 29$ENV{OPENSSL_ia32cap} = '~0x200000200000000'; 30 31my $proxy = TLSProxy::Proxy->new( 32 undef, 33 cmdstr(app(["openssl"]), display => 1), 34 srctop_file("apps", "server.pem"), 35 (!$ENV{HARNESS_ACTIVE} || $ENV{HARNESS_VERBOSE}) 36); 37 38use constant { 39 CHANGE_HRR_CIPHERSUITE => 0, 40 CHANGE_CH1_CIPHERSUITE => 1 41}; 42 43#Test 1: A client should fail if the server changes the ciphersuite between the 44# HRR and the SH 45$proxy->filter(\&hrr_filter); 46$proxy->serverflags("-curves P-256"); 47my $testtype = CHANGE_HRR_CIPHERSUITE; 48$proxy->start() or plan skip_all => "Unable to start up Proxy for tests"; 49plan tests => 2; 50ok(TLSProxy::Message->fail(), "Server ciphersuite changes"); 51 52#Test 2: It is an error if the client changes the offered ciphersuites so that 53# we end up selecting a different ciphersuite between HRR and the SH 54$proxy->clear(); 55$proxy->serverflags("-curves P-256"); 56$proxy->ciphersuitess("TLS_AES_128_GCM_SHA256:TLS_AES_256_GCM_SHA384"); 57$testtype = CHANGE_CH1_CIPHERSUITE; 58$proxy->start(); 59ok(TLSProxy::Message->fail(), "Client ciphersuite changes"); 60 61sub hrr_filter 62{ 63 my $proxy = shift; 64 65 if ($testtype == CHANGE_HRR_CIPHERSUITE) { 66 # We're only interested in the HRR 67 if ($proxy->flight != 1) { 68 return; 69 } 70 71 my $hrr = ${$proxy->message_list}[1]; 72 73 # We will normally only ever select CIPHER_TLS13_AES_128_GCM_SHA256 74 # because that's what Proxy tells s_server to do. Setting as below means 75 # the ciphersuite will change will we get the ServerHello 76 $hrr->ciphersuite(TLSProxy::Message::CIPHER_TLS13_AES_256_GCM_SHA384); 77 $hrr->repack(); 78 return; 79 } 80 81 # CHANGE_CH1_CIPHERSUITE 82 if ($proxy->flight != 0) { 83 return; 84 } 85 86 my $ch1 = ${$proxy->message_list}[0]; 87 88 # The server will always pick TLS_AES_256_GCM_SHA384 89 my @ciphersuites = (TLSProxy::Message::CIPHER_TLS13_AES_128_GCM_SHA256); 90 $ch1->ciphersuite_len(2 * scalar @ciphersuites); 91 $ch1->ciphersuites(\@ciphersuites); 92 $ch1->repack(); 93} 94