test/recipes/70-test_tls13cookie.t

   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
   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 $test_name = "test_tls13cookie";
  15 setup($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 use constant {
  32     COOKIE_ONLY => 0,
  33     COOKIE_AND_KEY_SHARE => 1
  34 };
  35
  36 my $proxy = TLSProxy::Proxy->new(
  37     undef,
  38     cmdstr(app(["openssl"]), display => 1),
  39     srctop_file("apps", "server.pem"),
  40     (!$ENV{HARNESS_ACTIVE} || $ENV{HARNESS_VERBOSE})
  41 );
  42
  43 my $cookieseen = 0;
  44 my $testtype;
  45
  46 #Test 1: Inserting a cookie into an HRR should see it echoed in the ClientHello
  47 $testtype = COOKIE_ONLY;
  48 $proxy->filter(\&cookie_filter);
  49 $proxy->serverflags("-curves X25519");
  50 $proxy->start() or plan skip_all => "Unable to start up Proxy for tests";
  51 plan tests => 2;
  52 ok(TLSProxy::Message->success() && $cookieseen == 1, "Cookie seen");
  53
  54 #Test 2: Same as test 1 but should also work where a new key_share is also
  55 #        required
  56 $testtype = COOKIE_AND_KEY_SHARE;
  57 $proxy->clear();
  58 $proxy->clientflags("-curves P-256:X25519");
  59 $proxy->serverflags("-curves X25519");
  60 $proxy->start();
  61 ok(TLSProxy::Message->success() && $cookieseen == 1, "Cookie seen");
  62
  63 sub cookie_filter
  64 {
  65     my $proxy = shift;
  66
  67     # We're only interested in the HRR and both ClientHellos
  68     return if ($proxy->flight > 2);
  69
  70     my $ext = pack "C8",
  71         0x00, 0x06, #Cookie Length
  72         0x00, 0x01, #Dummy cookie data (6 bytes)
  73         0x02, 0x03,
  74         0x04, 0x05;
  75
  76     foreach my $message (@{$proxy->message_list}) {
  77         if ($message->mt == TLSProxy::Message::MT_SERVER_HELLO
  78                 && ${$message->records}[0]->flight == 1) {
  79             $message->delete_extension(TLSProxy::Message::EXT_KEY_SHARE)
  80                 if ($testtype == COOKIE_ONLY);
  81             $message->set_extension(TLSProxy::Message::EXT_COOKIE, $ext);
  82             $message->repack();
  83         } elsif ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {
  84             if (${$message->records}[0]->flight == 0) {
  85                 if ($testtype == COOKIE_ONLY) {
  86                     my $ext = pack "C7",
  87                         0x00, 0x05, #List Length
  88                         0x00, 0x17, #P-256
  89                         0x00, 0x01, #key_exchange data length
  90                         0xff;       #Dummy key_share data
  91                     # Trick the server into thinking we got an unacceptable
  92                     # key_share
  93                     $message->set_extension(
  94                         TLSProxy::Message::EXT_KEY_SHARE, $ext);
  95                     $message->repack();
  96                 }
  97             } else {
  98                 #cmp can behave differently dependent on locale
  99                 no locale;
 100                 my $cookie =
 101                     $message->extension_data->{TLSProxy::Message::EXT_COOKIE};
 102
 103                 return if !defined($cookie);
 104
 105                 return if ($cookie cmp $ext) != 0;
 106
 107                 $cookieseen = 1;
 108             }
 109         }
 110     }
 111 }