1#! /usr/bin/env perl 2# Copyright 2024 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/; 11use OpenSSL::Test::Utils; 12 13use TLSProxy::Proxy; 14 15my $test_name = "test_npn"; 16setup($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 => "$test_name needs NPN enabled" 28 if disabled("nextprotoneg"); 29 30plan skip_all => "$test_name needs TLSv1.2 enabled" 31 if disabled("tls1_2"); 32 33my $proxy = TLSProxy::Proxy->new( 34 undef, 35 cmdstr(app(["openssl"]), display => 1), 36 srctop_file("apps", "server.pem"), 37 (!$ENV{HARNESS_ACTIVE} || $ENV{HARNESS_VERBOSE}) 38); 39 40$proxy->start() or plan skip_all => "Unable to start up Proxy for tests"; 41plan tests => 1; 42 43my $npnseen = 0; 44 45# Test 1: Check sending an empty NextProto message from the client works. This is 46# valid as per the spec, but OpenSSL does not allow you to send it. 47# Therefore we must be prepared to receive such a message but we cannot 48# generate it except via TLSProxy 49$proxy->clear(); 50$proxy->filter(\&npn_filter); 51$proxy->clientflags("-nextprotoneg foo -no_tls1_3"); 52$proxy->serverflags("-nextprotoneg foo"); 53$proxy->start(); 54ok($npnseen && TLSProxy::Message->success(), "Empty NPN message"); 55 56sub npn_filter 57{ 58 my $proxy = shift; 59 my $message; 60 61 # The NextProto message always appears in flight 2 62 return if $proxy->flight != 2; 63 64 foreach my $message (@{$proxy->message_list}) { 65 if ($message->mt == TLSProxy::Message::MT_NEXT_PROTO) { 66 # Our TLSproxy NextProto message support doesn't support parsing of 67 # the message. If we repack it just creates an empty NextProto 68 # message - which is exactly the scenario we want to test here. 69 $message->repack(); 70 $npnseen = 1; 71 } 72 } 73} 74