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 9use strict; 10use OpenSSL::Test qw/:DEFAULT cmdstr srctop_file bldtop_dir/; 11use OpenSSL::Test::Utils; 12use TLSProxy::Proxy; 13 14my $test_name = "test_tls13cookie"; 15setup($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 31use constant { 32 COOKIE_ONLY => 0, 33 COOKIE_AND_KEY_SHARE => 1 34}; 35 36my $proxy = TLSProxy::Proxy->new( 37 undef, 38 cmdstr(app(["openssl"]), display => 1), 39 srctop_file("apps", "server.pem"), 40 (!$ENV{HARNESS_ACTIVE} || $ENV{HARNESS_VERBOSE}) 41); 42 43my $cookieseen = 0; 44my $testtype; 45 46#Test 1: Inserting a cookie into an HRR should see it echoed in the ClientHello 47$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"; 51plan tests => 2; 52ok(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(); 61ok(TLSProxy::Message->success() && $cookieseen == 1, "Cookie seen"); 62 63sub 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} 112