1#! /usr/bin/env perl 2# Copyright 2017-2021 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 9use strict; 10use OpenSSL::Test qw/:DEFAULT cmdstr srctop_file srctop_dir bldtop_dir/; 11use OpenSSL::Test::Utils; 12use File::Temp qw(tempfile); 13use TLSProxy::Proxy; 14 15my $test_name = "test_tls13psk"; 16setup($test_name); 17 18plan skip_all => "TLSProxy isn't usable on $^O" 19 if $^O =~ /^(VMS)$/; 20 21plan skip_all => "$test_name needs the dynamic engine feature enabled" 22 if disabled("engine") || disabled("dynamic-engine"); 23 24plan skip_all => "$test_name needs the sock feature enabled" 25 if disabled("sock"); 26 27plan skip_all => "$test_name needs TLSv1.3 enabled" 28 if disabled("tls1_3") || (disabled("ec") && disabled("dh")); 29 30$ENV{OPENSSL_ia32cap} = '~0x200000200000000'; 31 32my $proxy = TLSProxy::Proxy->new( 33 undef, 34 cmdstr(app(["openssl"]), display => 1), 35 srctop_file("apps", "server.pem"), 36 (!$ENV{HARNESS_ACTIVE} || $ENV{HARNESS_VERBOSE}) 37); 38 39use constant { 40 PSK_LAST_FIRST_CH => 0, 41 ILLEGAL_EXT_SECOND_CH => 1 42}; 43 44#Most PSK tests are done in test_ssl_new. This tests various failure scenarios 45#around PSK 46 47#Test 1: First get a session 48(undef, my $session) = tempfile(); 49$proxy->clientflags("-sess_out ".$session); 50$proxy->serverflags("-servername localhost"); 51$proxy->sessionfile($session); 52$proxy->start() or plan skip_all => "Unable to start up Proxy for tests"; 53plan tests => 5; 54ok(TLSProxy::Message->success(), "Initial connection"); 55 56#Test 2: Attempt a resume with PSK not in last place. Should fail 57$proxy->clear(); 58$proxy->clientflags("-sess_in ".$session); 59$proxy->filter(\&modify_psk_filter); 60my $testtype = PSK_LAST_FIRST_CH; 61$proxy->start(); 62ok(TLSProxy::Message->fail(), "PSK not last"); 63 64#Test 3: Attempt a resume after an HRR where PSK hash matches selected 65# ciphersuite. Should see PSK on second ClientHello 66$proxy->clear(); 67$proxy->clientflags("-sess_in ".$session); 68if (disabled("ec")) { 69 $proxy->serverflags("-curves ffdhe3072"); 70} else { 71 $proxy->serverflags("-curves P-256"); 72} 73$proxy->filter(undef); 74$proxy->start(); 75#Check if the PSK is present in the second ClientHello 76my $ch2 = ${$proxy->message_list}[2]; 77my $ch2seen = defined $ch2 && $ch2->mt() == TLSProxy::Message::MT_CLIENT_HELLO; 78my $pskseen = $ch2seen 79 && defined ${$ch2->{extension_data}}{TLSProxy::Message::EXT_PSK}; 80ok($pskseen, "PSK hash matches"); 81 82#Test 4: Attempt a resume after an HRR where PSK hash does not match selected 83# ciphersuite. Should not see PSK on second ClientHello 84$proxy->clear(); 85$proxy->clientflags("-sess_in ".$session); 86$proxy->filter(\&modify_psk_filter); 87if (disabled("ec")) { 88 $proxy->serverflags("-curves ffdhe3072"); 89} else { 90 $proxy->serverflags("-curves P-256"); 91} 92$proxy->ciphersuitesc("TLS_AES_128_GCM_SHA256:TLS_AES_256_GCM_SHA384"); 93$proxy->ciphersuitess("TLS_AES_256_GCM_SHA384"); 94#We force an early failure because TLS Proxy doesn't actually support 95#TLS_AES_256_GCM_SHA384. That doesn't matter for this test though. 96$testtype = ILLEGAL_EXT_SECOND_CH; 97$proxy->start(); 98#Check if the PSK is present in the second ClientHello 99$ch2 = ${$proxy->message_list}[2]; 100$ch2seen = defined $ch2 && $ch2->mt() == TLSProxy::Message::MT_CLIENT_HELLO; 101$pskseen = $ch2seen 102 && defined ${$ch2->extension_data}{TLSProxy::Message::EXT_PSK}; 103ok($ch2seen && !$pskseen, "PSK hash does not match"); 104 105#Test 5: Attempt a resume without a sig agls extension. Should succeed because 106# sig algs is not needed in a resumption. 107$proxy->clear(); 108$proxy->clientflags("-sess_in ".$session); 109$proxy->filter(\&remove_sig_algs_filter); 110$proxy->start(); 111ok(TLSProxy::Message->success(), "Remove sig algs"); 112 113unlink $session; 114 115sub modify_psk_filter 116{ 117 my $proxy = shift; 118 my $flight; 119 my $message; 120 121 if ($testtype == PSK_LAST_FIRST_CH) { 122 $flight = 0; 123 } else { 124 $flight = 2; 125 } 126 127 # Only look at the first or second ClientHello 128 return if $proxy->flight != $flight; 129 130 if ($testtype == PSK_LAST_FIRST_CH) { 131 $message = ${$proxy->message_list}[0]; 132 } else { 133 $message = ${$proxy->message_list}[2]; 134 } 135 136 return if (!defined $message 137 || $message->mt != TLSProxy::Message::MT_CLIENT_HELLO); 138 139 if ($testtype == PSK_LAST_FIRST_CH) { 140 $message->set_extension(TLSProxy::Message::EXT_FORCE_LAST, ""); 141 } else { 142 #Deliberately break the connection 143 $message->set_extension(TLSProxy::Message::EXT_SUPPORTED_GROUPS, ""); 144 } 145 $message->repack(); 146} 147 148sub remove_sig_algs_filter 149{ 150 my $proxy = shift; 151 my $message; 152 153 # Only look at the first ClientHello 154 return if $proxy->flight != 0; 155 156 $message = ${$proxy->message_list}[0]; 157 $message->delete_extension(TLSProxy::Message::EXT_SIG_ALGS); 158 $message->repack(); 159} 160