1#! /usr/bin/env perl 2# Copyright 2015-2018 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; 13use File::Temp qw(tempfile); 14 15use constant { 16 REVERSE_ORDER_VERSIONS => 1, 17 UNRECOGNISED_VERSIONS => 2, 18 NO_EXTENSION => 3, 19 EMPTY_EXTENSION => 4, 20 TLS1_1_AND_1_0_ONLY => 5, 21 WITH_TLS1_4 => 6, 22 BAD_LEGACY_VERSION => 7 23}; 24 25my $testtype; 26 27my $test_name = "test_sslversions"; 28setup($test_name); 29 30plan skip_all => "TLSProxy isn't usable on $^O" 31 if $^O =~ /^(VMS)$/; 32 33plan skip_all => "$test_name needs the dynamic engine feature enabled" 34 if disabled("engine") || disabled("dynamic-engine"); 35 36plan skip_all => "$test_name needs the sock feature enabled" 37 if disabled("sock"); 38 39plan skip_all => "$test_name needs TLS1.3, TLS1.2 and TLS1.1 enabled" 40 if disabled("tls1_3") || disabled("tls1_2") || disabled("tls1_1"); 41 42$ENV{OPENSSL_ia32cap} = '~0x200000200000000'; 43 44my $proxy = TLSProxy::Proxy->new( 45 undef, 46 cmdstr(app(["openssl"]), display => 1), 47 srctop_file("apps", "server.pem"), 48 (!$ENV{HARNESS_ACTIVE} || $ENV{HARNESS_VERBOSE}) 49); 50 51#We're just testing various negative and unusual scenarios here. ssltest with 52#02-protocol-version.conf should check all the various combinations of normal 53#version neg 54 55#Test 1: An empty supported_versions extension should not succeed 56$testtype = EMPTY_EXTENSION; 57$proxy->filter(\&modify_supported_versions_filter); 58$proxy->start() or plan skip_all => "Unable to start up Proxy for tests"; 59plan tests => 8; 60ok(TLSProxy::Message->fail(), "Empty supported versions"); 61 62#Test 2: supported_versions extension with no recognised versions should not 63#succeed 64$proxy->clear(); 65$testtype = UNRECOGNISED_VERSIONS; 66$proxy->start(); 67ok(TLSProxy::Message->fail(), "No recognised versions"); 68 69#Test 3: No supported versions extensions should succeed and select TLSv1.2 70$proxy->clear(); 71$testtype = NO_EXTENSION; 72$proxy->start(); 73my $record = pop @{$proxy->record_list}; 74ok(TLSProxy::Message->success() 75 && $record->version() == TLSProxy::Record::VERS_TLS_1_2, 76 "No supported versions extension"); 77 78#Test 4: No supported versions extensions should fail if only TLS1.3 available 79$proxy->clear(); 80$proxy->serverflags("-tls1_3"); 81$proxy->start(); 82ok(TLSProxy::Message->fail(), "No supported versions extension (only TLS1.3)"); 83 84#Test 5: supported versions extension with best version last should succeed 85#and select TLSv1.3 86$proxy->clear(); 87$testtype = REVERSE_ORDER_VERSIONS; 88$proxy->start(); 89$record = pop @{$proxy->record_list}; 90ok(TLSProxy::Message->success() 91 && $record->version() == TLSProxy::Record::VERS_TLS_1_2 92 && TLSProxy::Proxy->is_tls13(), 93 "Reverse order versions"); 94 95#Test 6: no TLSv1.3 or TLSv1.2 version in supported versions extension, but 96#TLSv1.1 and TLSv1.0 are present. Should just use TLSv1.1 and succeed 97$proxy->clear(); 98$testtype = TLS1_1_AND_1_0_ONLY; 99$proxy->start(); 100$record = pop @{$proxy->record_list}; 101ok(TLSProxy::Message->success() 102 && $record->version() == TLSProxy::Record::VERS_TLS_1_1, 103 "TLS1.1 and TLS1.0 in supported versions extension only"); 104 105#Test 7: TLS1.4 and TLS1.3 in supported versions. Should succeed and use TLS1.3 106$proxy->clear(); 107$testtype = WITH_TLS1_4; 108$proxy->start(); 109$record = pop @{$proxy->record_list}; 110ok(TLSProxy::Message->success() 111 && $record->version() == TLSProxy::Record::VERS_TLS_1_2 112 && TLSProxy::Proxy->is_tls13(), 113 "TLS1.4 in supported versions extension"); 114 115#Test 8: Set the legacy version to SSLv3 with supported versions. Should fail 116$proxy->clear(); 117$testtype = BAD_LEGACY_VERSION; 118$proxy->start(); 119ok(TLSProxy::Message->fail(), "Legacy version is SSLv3 with supported versions"); 120 121sub modify_supported_versions_filter 122{ 123 my $proxy = shift; 124 125 if ($proxy->flight == 1) { 126 # Change the ServerRandom so that the downgrade sentinel doesn't cause 127 # the connection to fail 128 my $message = ${$proxy->message_list}[1]; 129 return if (!defined $message); 130 131 $message->random("\0"x32); 132 $message->repack(); 133 return; 134 } 135 136 # We're only interested in the initial ClientHello 137 if ($proxy->flight != 0) { 138 return; 139 } 140 141 foreach my $message (@{$proxy->message_list}) { 142 if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) { 143 my $ext; 144 if ($testtype == REVERSE_ORDER_VERSIONS) { 145 $ext = pack "C5", 146 0x04, # Length 147 0x03, 0x03, #TLSv1.2 148 0x03, 0x04; #TLSv1.3 149 } elsif ($testtype == UNRECOGNISED_VERSIONS) { 150 $ext = pack "C5", 151 0x04, # Length 152 0x04, 0x04, #Some unrecognised version 153 0x04, 0x03; #Another unrecognised version 154 } elsif ($testtype == TLS1_1_AND_1_0_ONLY) { 155 $ext = pack "C5", 156 0x04, # Length 157 0x03, 0x02, #TLSv1.1 158 0x03, 0x01; #TLSv1.0 159 } elsif ($testtype == WITH_TLS1_4) { 160 $ext = pack "C5", 161 0x04, # Length 162 0x03, 0x05, #TLSv1.4 163 0x03, 0x04; #TLSv1.3 164 } 165 if ($testtype == REVERSE_ORDER_VERSIONS 166 || $testtype == UNRECOGNISED_VERSIONS 167 || $testtype == TLS1_1_AND_1_0_ONLY 168 || $testtype == WITH_TLS1_4) { 169 $message->set_extension( 170 TLSProxy::Message::EXT_SUPPORTED_VERSIONS, $ext); 171 } elsif ($testtype == EMPTY_EXTENSION) { 172 $message->set_extension( 173 TLSProxy::Message::EXT_SUPPORTED_VERSIONS, ""); 174 } elsif ($testtype == NO_EXTENSION) { 175 $message->delete_extension( 176 TLSProxy::Message::EXT_SUPPORTED_VERSIONS); 177 } else { 178 # BAD_LEGACY_VERSION 179 $message->client_version(TLSProxy::Record::VERS_SSL_3_0); 180 } 181 182 $message->repack(); 183 } 184 } 185} 186