test/recipes/70-test_sslextension.t

   1 #! /usr/bin/env perl
   2 # Copyright 2015-2016 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 $test_name = "test_sslextension";
  15 setup($test_name);
  16
  17 plan skip_all => "TLSProxy isn't usable on $^O"
  18     if $^O =~ /^(VMS|MSWin32)$/;
  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 TLS enabled"
  27     if alldisabled(available_protocols("tls"));
  28
  29 $ENV{OPENSSL_ia32cap} = '~0x200000200000000';
  30 my $proxy = TLSProxy::Proxy->new(
  31     \&extension_filter,
  32     cmdstr(app(["openssl"]), display => 1),
  33     srctop_file("apps", "server.pem"),
  34     (!$ENV{HARNESS_ACTIVE} || $ENV{HARNESS_VERBOSE})
  35 );
  36
  37 # Test 1: Sending a zero length extension block should pass
  38 $proxy->start() or plan skip_all => "Unable to start up Proxy for tests";
  39 plan tests => 3;
  40 ok(TLSProxy::Message->success, "Zero extension length test");
  41
  42 sub extension_filter
  43 {
  44     my $proxy = shift;
  45
  46     if ($proxy->flight == 1) {
  47         # Change the ServerRandom so that the downgrade sentinel doesn't cause
  48         # the connection to fail
  49         my $message = ${$proxy->message_list}[1];
  50         $message->random("\0"x32);
  51         $message->repack();
  52         return;
  53     }
  54
  55     # We're only interested in the initial ClientHello
  56     if ($proxy->flight != 0) {
  57         return;
  58     }
  59
  60     foreach my $message (@{$proxy->message_list}) {
  61         if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {
  62             # Remove all extensions and set the extension len to zero
  63             $message->extension_data({});
  64             $message->extensions_len(0);
  65             # Extensions have been removed so make sure we don't try to use them
  66             $message->process_extensions();
  67
  68             $message->repack();
  69         }
  70     }
  71 }
  72
  73 # Test 2-3: Sending a duplicate extension should fail.
  74 sub inject_duplicate_extension
  75 {
  76   my ($proxy, $message_type) = @_;
  77
  78     foreach my $message (@{$proxy->message_list}) {
  79         if ($message->mt == $message_type) {
  80           my %extensions = %{$message->extension_data};
  81             # Add a duplicate (unknown) extension.
  82             $message->set_extension(TLSProxy::Message::EXT_DUPLICATE_EXTENSION, "");
  83             $message->set_extension(TLSProxy::Message::EXT_DUPLICATE_EXTENSION, "");
  84             $message->repack();
  85         }
  86     }
  87 }
  88
  89 sub inject_duplicate_extension_clienthello
  90 {
  91     my $proxy = shift;
  92
  93     # We're only interested in the initial ClientHello
  94     if ($proxy->flight != 0) {
  95         return;
  96     }
  97
  98     inject_duplicate_extension($proxy, TLSProxy::Message::MT_CLIENT_HELLO);
  99 }
 100
 101 sub inject_duplicate_extension_serverhello
 102 {
 103     my $proxy = shift;
 104
 105     # We're only interested in the initial ServerHello
 106     if ($proxy->flight != 1) {
 107         return;
 108     }
 109
 110     inject_duplicate_extension($proxy, TLSProxy::Message::MT_SERVER_HELLO);
 111 }
 112
 113 $proxy->clear();
 114 $proxy->filter(\&inject_duplicate_extension_clienthello);
 115 $proxy->start();
 116 ok(TLSProxy::Message->fail(), "Duplicate ClientHello extension");
 117
 118 $proxy->clear();
 119 $proxy->filter(\&inject_duplicate_extension_serverhello);
 120 $proxy->start();
 121 ok(TLSProxy::Message->fail(), "Duplicate ServerHello extension");