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Add a test for the supported_versions extension
Reviewed-by: Rich Salz <rsalz@openssl.org>
This commit is contained in:
Matt Caswell
parent
619d8336d0
commit
203b1cdf73
148
test/recipes/70-test_sslversions.t
Executable file
148
test/recipes/70-test_sslversions.t
Executable file
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#! /usr/bin/env perl
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# Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
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#
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# Licensed under the OpenSSL license (the "License"). You may not use
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# this file except in compliance with the License. You can obtain a copy
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# in the file LICENSE in the source distribution or at
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# https://www.openssl.org/source/license.html
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use strict;
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use OpenSSL::Test qw/:DEFAULT cmdstr srctop_file bldtop_dir/;
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use OpenSSL::Test::Utils;
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use TLSProxy::Proxy;
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use File::Temp qw(tempfile);
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use constant {
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REVERSE_ORDER_VERSIONS => 1,
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UNRECOGNISED_VERSIONS => 2,
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NO_EXTENSION => 3,
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EMPTY_EXTENSION => 4,
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NO_TLS1_3 => 5
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};
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my $testtype;
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my $test_name = "test_sslversions";
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setup($test_name);
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plan skip_all => "TLSProxy isn't usable on $^O"
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if $^O =~ /^(VMS|MSWin32)$/;
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plan skip_all => "$test_name needs the dynamic engine feature enabled"
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if disabled("engine") || disabled("dynamic-engine");
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plan skip_all => "$test_name needs the sock feature enabled"
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if disabled("sock");
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plan skip_all => "$test_name needs TLS1.3, TLS1.2 and TLS1.1 enabled"
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if disabled("tls1_3") || disabled("tls1_2") || disabled("tls1_1");
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$ENV{OPENSSL_ia32cap} = '~0x200000200000000';
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my $proxy = TLSProxy::Proxy->new(
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undef,
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cmdstr(app(["openssl"]), display => 1),
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srctop_file("apps", "server.pem"),
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(!$ENV{HARNESS_ACTIVE} || $ENV{HARNESS_VERBOSE})
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);
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#We're just testing various negative and unusual scenarios here. ssltest with
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#02-protocol-version.conf should check all the various combinations of normal
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#version neg
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#Test 1: An empty supported_versions extension should not succeed
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$testtype = EMPTY_EXTENSION;
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$proxy->filter(\&modify_supported_versions_filter);
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$proxy->start() or plan skip_all => "Unable to start up Proxy for tests";
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plan tests => 6;
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ok(TLSProxy::Message->fail(), "Empty supported versions");
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#Test 2: supported_versions extension with no recognised versions should not
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#succeed
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$proxy->clear();
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$testtype = UNRECOGNISED_VERSIONS;
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$proxy->start();
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ok(TLSProxy::Message->fail(), "No recognised versions");
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#Test 3: No supported versions extensions should succeed and select TLSv1.2
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$proxy->clear();
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$testtype = NO_EXTENSION;
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$proxy->start();
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my $record = pop @{$proxy->record_list};
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ok(TLSProxy::Message->success()
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&& $record->version() == TLSProxy::Record::VERS_TLS_1_2,
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"No supported versions extension");
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#Test 4: No supported versions extensions should fail if only TLS1.3 available
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$proxy->clear();
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$proxy->serverflags("-tls1_3");
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$proxy->start();
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ok(TLSProxy::Message->fail(), "No supported versions extension (only TLS1.3)");
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#Test 5: supported versions extension with best version last should succeed
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#and select TLSv1.3
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$proxy->clear();
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$testtype = REVERSE_ORDER_VERSIONS;
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$proxy->start();
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$record = pop @{$proxy->record_list};
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ok(TLSProxy::Message->success()
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&& $record->version() == TLSProxy::Record::VERS_TLS_1_3,
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"Reverse order versions");
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#Test 6: no TLSv1.3 or TLSv1.2 version in supported versions extension, but
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#TLSv1.1 and TLSv1.0 are present. Should just use TLSv1.1 and succeed
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$proxy->clear();
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$testtype = NO_TLS1_3;
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$proxy->start();
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$record = pop @{$proxy->record_list};
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ok(TLSProxy::Message->success()
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&& $record->version() == TLSProxy::Record::VERS_TLS_1_1,
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"No TLS1.3 in supported versions extension");
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sub modify_supported_versions_filter
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{
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my $proxy = shift;
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# We're only interested in the initial ClientHello
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if ($proxy->flight != 0) {
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return;
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}
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foreach my $message (@{$proxy->message_list}) {
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if ($message->mt == TLSProxy::Message::MT_CLIENT_HELLO) {
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my $ext;
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if ($testtype == REVERSE_ORDER_VERSIONS) {
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$ext = pack "C5",
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0x04, # Length
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0x03, 0x03, #TLSv1.2
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0x03, 0x04; #TLSv1.3
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} elsif ($testtype == UNRECOGNISED_VERSIONS) {
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$ext = pack "C5",
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0x04, # Length
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0x04, 0x04, #Some unrecognised version
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0x04, 0x03; #Another unrecognised version
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} elsif ($testtype == NO_TLS1_3) {
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$ext = pack "C5",
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0x04, # Length
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0x03, 0x02, #TLSv1.1
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0x03, 0x01; #TLSv1.0
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}
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if ($testtype == REVERSE_ORDER_VERSIONS
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|| $testtype == UNRECOGNISED_VERSIONS
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|| $testtype == NO_TLS1_3) {
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$message->set_extension(
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TLSProxy::Message::EXT_SUPPORTED_VERSIONS, $ext);
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} elsif ($testtype == EMPTY_EXTENSION) {
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$message->set_extension(
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TLSProxy::Message::EXT_SUPPORTED_VERSIONS, "");
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} else {
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$message->delete_extension(
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TLSProxy::Message::EXT_SUPPORTED_VERSIONS);
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}
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$message->repack();
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}
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}
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}
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@ -62,6 +62,7 @@ use constant {
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EXT_ENCRYPT_THEN_MAC => 22,
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EXT_EXTENDED_MASTER_SECRET => 23,
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EXT_SESSION_TICKET => 35,
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EXT_SUPPORTED_VERSIONS => 43,
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# This extension does not exist and isn't recognised by OpenSSL.
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# We use it to test handling of duplicate extensions.
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EXT_DUPLICATE_EXTENSION => 1234
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