test/recipes/70-test_tls13hrr.t

   1 #! /usr/bin/env perl
   2 # Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
   3 #
   4 # Licensed under the Apache License 2.0 (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
   9 use strict;
  10 use OpenSSL::Test qw/:DEFAULT cmdstr srctop_file bldtop_dir/;
  11 use OpenSSL::Test::Utils;
  12 use TLSProxy::Proxy;
  13
  14 my $test_name = "test_tls13hrr";
  15 setup($test_name);
  16
  17 plan skip_all => "TLSProxy isn't usable on $^O"
  18     if $^O =~ /^(VMS)$/;
  19
  20 plan skip_all => "$test_name needs the dynamic engine feature enabled"
  21     if disabled("engine") || disabled("dynamic-engine");
  22
  23 plan skip_all => "$test_name needs the sock feature enabled"
  24     if disabled("sock");
  25
  26 plan skip_all => "$test_name needs TLS1.3 enabled"
  27     if disabled("tls1_3");
  28
  29 $ENV{OPENSSL_ia32cap} = '~0x200000200000000';
  30
  31 my $proxy = TLSProxy::Proxy->new(
  32     undef,
  33     cmdstr(app(["openssl"]), display => 1),
  34     srctop_file("apps", "server.pem"),
  35     (!$ENV{HARNESS_ACTIVE} || $ENV{HARNESS_VERBOSE})
  36 );
  37
  38 use 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");
  47 my $testtype = CHANGE_HRR_CIPHERSUITE;
  48 $proxy->start() or plan skip_all => "Unable to start up Proxy for tests";
  49 plan tests => 2;
  50 ok(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();
  59 ok(TLSProxy::Message->fail(), "Client ciphersuite changes");
  60
  61 sub 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 }