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 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 $test_name = "test_tls13cookie";
  15 setup($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") if !disabled("ec");
  50 $proxy->start() or plan skip_all => "Unable to start up Proxy for tests";
  51 plan tests => 2;
  52 SKIP: {
  53     skip "EC disabled", 1, if disabled("ec");
  54     ok(TLSProxy::Message->success() && $cookieseen == 1, "Cookie seen");
  55 }
  56
  57
  58
  59 #Test 2: Same as test 1 but should also work where a new key_share is also
  60 #        required
  61 $testtype = COOKIE_AND_KEY_SHARE;
  62 $proxy->clear();
  63 if (disabled("ec")) {
  64     $proxy->clientflags("-curves ffdhe3072:ffdhe2048");
  65     $proxy->serverflags("-curves ffdhe2048");
  66 } else {
  67     $proxy->clientflags("-curves P-256:X25519");
  68     $proxy->serverflags("-curves X25519");
  69 }
  70 $proxy->start();
  71 ok(TLSProxy::Message->success() && $cookieseen == 1, "Cookie seen");
  72
  73 sub cookie_filter
  74 {
  75     my $proxy = shift;
  76
  77     # We're only interested in the HRR and both ClientHellos
  78     return if ($proxy->flight > 2);
  79
  80     my $ext = pack "C8",
  81         0x00, 0x06, #Cookie Length
  82         0x00, 0x01, #Dummy cookie data (6 bytes)
  83         0x02, 0x03,
  84         0x04, 0x05;
  85
  86     foreach my $message (@{$proxy->message_list}) {
  87         if ($message->mt == TLSProxy::Message::MT_SERVER_HELLO
  88                 && ${$message->records}[0]->flight == 1) {
  89             $message->delete_extension(TLSProxy::Message::EXT_KEY_SHARE)
  90                 if ($testtype == COOKIE_ONLY);
  91             $message->set_extension(TLSProxy::Message::EXT_COOKIE, $ext);
  92             $message->repack();
  93         } elsif ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {
  94             if (${$message->records}[0]->flight == 0) {
  95                 if ($testtype == COOKIE_ONLY) {
  96                     my $ext = pack "C7",
  97                         0x00, 0x05, #List Length
  98                         0x00, 0x17, #P-256
  99                         0x00, 0x01, #key_exchange data length
 100                         0xff;       #Dummy key_share data
 101                     # Trick the server into thinking we got an unacceptable
 102                     # key_share
 103                     $message->set_extension(
 104                         TLSProxy::Message::EXT_KEY_SHARE, $ext);
 105                     $message->repack();
 106                 }
 107             } else {
 108                 #cmp can behave differently dependent on locale
 109                 no locale;
 110                 my $cookie =
 111                     $message->extension_data->{TLSProxy::Message::EXT_COOKIE};
 112
 113                 return if !defined($cookie);
 114
 115                 return if ($cookie cmp $ext) != 0;
 116
 117                 $cookieseen = 1;
 118             }
 119         }
 120     }
 121 }