1#! /usr/bin/env perl 2# Copyright 2017-2022 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} || $ENV{HARNESS_VERBOSE}) 36); 37 38use constant { 39 CHANGE_HRR_CIPHERSUITE => 0, 40 CHANGE_CH1_CIPHERSUITE => 1, 41 DUPLICATE_HRR => 2 42}; 43 44#Test 1: A client should fail if the server changes the ciphersuite between the 45# HRR and the SH 46$proxy->filter(\&hrr_filter); 47$proxy->serverflags("-curves P-256"); 48my $testtype = CHANGE_HRR_CIPHERSUITE; 49$proxy->start() or plan skip_all => "Unable to start up Proxy for tests"; 50plan tests => 3; 51ok(TLSProxy::Message->fail(), "Server ciphersuite changes"); 52 53#Test 2: It is an error if the client changes the offered ciphersuites so that 54# we end up selecting a different ciphersuite between HRR and the SH 55$proxy->clear(); 56$proxy->serverflags("-curves P-256"); 57$proxy->ciphersuitess("TLS_AES_128_GCM_SHA256:TLS_AES_256_GCM_SHA384"); 58$testtype = CHANGE_CH1_CIPHERSUITE; 59$proxy->start(); 60ok(TLSProxy::Message->fail(), "Client ciphersuite changes"); 61 62#Test 3: A client should fail with unexpected_message alert if the server 63# sends more than 1 HRR 64my $fatal_alert = 0; 65$proxy->clear(); 66if (disabled("ec")) { 67 $proxy->serverflags("-curves ffdhe3072"); 68} else { 69 $proxy->serverflags("-curves P-256"); 70} 71$testtype = DUPLICATE_HRR; 72$proxy->start(); 73ok($fatal_alert, "Server duplicated HRR"); 74 75sub hrr_filter 76{ 77 my $proxy = shift; 78 79 if ($testtype == CHANGE_HRR_CIPHERSUITE) { 80 # We're only interested in the HRR 81 if ($proxy->flight != 1) { 82 return; 83 } 84 85 my $hrr = ${$proxy->message_list}[1]; 86 87 # We will normally only ever select CIPHER_TLS13_AES_128_GCM_SHA256 88 # because that's what Proxy tells s_server to do. Setting as below means 89 # the ciphersuite will change will we get the ServerHello 90 $hrr->ciphersuite(TLSProxy::Message::CIPHER_TLS13_AES_256_GCM_SHA384); 91 $hrr->repack(); 92 return; 93 } 94 95 if ($testtype == DUPLICATE_HRR) { 96 # We're only interested in the HRR 97 # and the unexpected_message alert from client 98 if ($proxy->flight == 4) { 99 $fatal_alert = 1 100 if @{$proxy->record_list}[-1]->is_fatal_alert(0) == 10; 101 return; 102 } 103 if ($proxy->flight != 3) { 104 return; 105 } 106 107 # Find ServerHello record (HRR actually) and insert after that 108 my $i; 109 for ($i = 0; ${$proxy->record_list}[$i]->flight() < 1; $i++) { 110 next; 111 } 112 my $hrr_record = ${$proxy->record_list}[$i]; 113 my $dup_hrr = TLSProxy::Record->new(3, 114 $hrr_record->content_type(), 115 $hrr_record->version(), 116 $hrr_record->len(), 117 $hrr_record->sslv2(), 118 $hrr_record->len_real(), 119 $hrr_record->decrypt_len(), 120 $hrr_record->data(), 121 $hrr_record->decrypt_data()); 122 123 $i++; 124 splice @{$proxy->record_list}, $i, 0, $dup_hrr; 125 return; 126 } 127 128 # CHANGE_CH1_CIPHERSUITE 129 if ($proxy->flight != 0) { 130 return; 131 } 132 133 my $ch1 = ${$proxy->message_list}[0]; 134 135 # The server will always pick TLS_AES_256_GCM_SHA384 136 my @ciphersuites = (TLSProxy::Message::CIPHER_TLS13_AES_128_GCM_SHA256); 137 $ch1->ciphersuite_len(2 * scalar @ciphersuites); 138 $ch1->ciphersuites(\@ciphersuites); 139 $ch1->repack(); 140} 141