| #! /usr/bin/env perl |
| # Copyright 2017-2022 The OpenSSL Project Authors. All Rights Reserved. |
| # |
| # Licensed under the Apache License 2.0 (the "License"). You may not use |
| # this file except in compliance with the License. You can obtain a copy |
| # in the file LICENSE in the source distribution or at |
| # https://www.openssl.org/source/license.html |
| |
| use strict; |
| use OpenSSL::Test qw/:DEFAULT cmdstr srctop_file bldtop_dir/; |
| use OpenSSL::Test::Utils; |
| use TLSProxy::Proxy; |
| |
| my $test_name = "test_tls13hrr"; |
| setup($test_name); |
| |
| plan skip_all => "TLSProxy isn't usable on $^O" |
| if $^O =~ /^(VMS)$/; |
| |
| plan skip_all => "$test_name needs the dynamic engine feature enabled" |
| if disabled("engine") || disabled("dynamic-engine"); |
| |
| plan skip_all => "$test_name needs the sock feature enabled" |
| if disabled("sock"); |
| |
| plan skip_all => "$test_name needs TLS1.3 enabled" |
| if disabled("tls1_3") || (disabled("ec") && disabled("dh")); |
| |
| my $proxy = TLSProxy::Proxy->new( |
| undef, |
| cmdstr(app(["openssl"]), display => 1), |
| srctop_file("apps", "server.pem"), |
| (!$ENV{HARNESS_ACTIVE} || $ENV{HARNESS_VERBOSE}) |
| ); |
| |
| use constant { |
| CHANGE_HRR_CIPHERSUITE => 0, |
| CHANGE_CH1_CIPHERSUITE => 1, |
| DUPLICATE_HRR => 2 |
| }; |
| |
| #Test 1: A client should fail if the server changes the ciphersuite between the |
| # HRR and the SH |
| $proxy->filter(\&hrr_filter); |
| if (disabled("ec")) { |
| $proxy->serverflags("-curves ffdhe3072"); |
| } else { |
| $proxy->serverflags("-curves P-256"); |
| } |
| my $testtype = CHANGE_HRR_CIPHERSUITE; |
| $proxy->start() or plan skip_all => "Unable to start up Proxy for tests"; |
| plan tests => 3; |
| ok(TLSProxy::Message->fail(), "Server ciphersuite changes"); |
| |
| #Test 2: It is an error if the client changes the offered ciphersuites so that |
| # we end up selecting a different ciphersuite between HRR and the SH |
| $proxy->clear(); |
| if (disabled("ec")) { |
| $proxy->serverflags("-curves ffdhe3072"); |
| } else { |
| $proxy->serverflags("-curves P-256"); |
| } |
| $proxy->ciphersuitess("TLS_AES_128_GCM_SHA256:TLS_AES_256_GCM_SHA384"); |
| $testtype = CHANGE_CH1_CIPHERSUITE; |
| $proxy->start(); |
| ok(TLSProxy::Message->fail(), "Client ciphersuite changes"); |
| |
| #Test 3: A client should fail with unexpected_message alert if the server |
| # sends more than 1 HRR |
| my $fatal_alert = 0; |
| $proxy->clear(); |
| if (disabled("ec")) { |
| $proxy->serverflags("-curves ffdhe3072"); |
| } else { |
| $proxy->serverflags("-curves P-256"); |
| } |
| $testtype = DUPLICATE_HRR; |
| $proxy->start(); |
| ok($fatal_alert, "Server duplicated HRR"); |
| |
| sub hrr_filter |
| { |
| my $proxy = shift; |
| |
| if ($testtype == CHANGE_HRR_CIPHERSUITE) { |
| # We're only interested in the HRR |
| if ($proxy->flight != 1) { |
| return; |
| } |
| |
| my $hrr = ${$proxy->message_list}[1]; |
| |
| # We will normally only ever select CIPHER_TLS13_AES_128_GCM_SHA256 |
| # because that's what Proxy tells s_server to do. Setting as below means |
| # the ciphersuite will change will we get the ServerHello |
| $hrr->ciphersuite(TLSProxy::Message::CIPHER_TLS13_AES_256_GCM_SHA384); |
| $hrr->repack(); |
| return; |
| } |
| |
| if ($testtype == DUPLICATE_HRR) { |
| # We're only interested in the HRR |
| # and the unexpected_message alert from client |
| if ($proxy->flight == 4) { |
| $fatal_alert = 1 |
| if @{$proxy->record_list}[-1]->is_fatal_alert(0) == 10; |
| return; |
| } |
| if ($proxy->flight != 3) { |
| return; |
| } |
| |
| # Find ServerHello record (HRR actually) and insert after that |
| my $i; |
| for ($i = 0; ${$proxy->record_list}[$i]->flight() < 1; $i++) { |
| next; |
| } |
| my $hrr_record = ${$proxy->record_list}[$i]; |
| my $dup_hrr = TLSProxy::Record->new(3, |
| $hrr_record->content_type(), |
| $hrr_record->version(), |
| $hrr_record->len(), |
| $hrr_record->sslv2(), |
| $hrr_record->len_real(), |
| $hrr_record->decrypt_len(), |
| $hrr_record->data(), |
| $hrr_record->decrypt_data()); |
| |
| $i++; |
| splice @{$proxy->record_list}, $i, 0, $dup_hrr; |
| return; |
| } |
| |
| # CHANGE_CH1_CIPHERSUITE |
| if ($proxy->flight != 0) { |
| return; |
| } |
| |
| my $ch1 = ${$proxy->message_list}[0]; |
| |
| # The server will always pick TLS_AES_256_GCM_SHA384 |
| my @ciphersuites = (TLSProxy::Message::CIPHER_TLS13_AES_128_GCM_SHA256); |
| $ch1->ciphersuite_len(2 * scalar @ciphersuites); |
| $ch1->ciphersuites(\@ciphersuites); |
| $ch1->repack(); |
| } |