mirror of https://github.com/openssl/openssl.git
288 lines
9.3 KiB
Perl
288 lines
9.3 KiB
Perl
#! /usr/bin/env perl
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# Copyright 2017-2024 The OpenSSL Project Authors. All Rights Reserved.
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#
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# Licensed under the Apache License 2.0 (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 TLSProxy::Message;
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use Cwd qw(abs_path);
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my $test_name = "test_tls13hrr";
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setup($test_name);
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plan skip_all => "TLSProxy isn't usable on $^O"
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if $^O =~ /^(VMS)$/;
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plan skip_all => "$test_name needs the module feature enabled"
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if disabled("module");
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plan skip_all => "$test_name needs the sock feature enabled"
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if disabled("sock");
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plan skip_all => "$test_name needs elliptic curves or diffie-hellman enabled"
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if disabled("ec") && disabled("dh");
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$ENV{OPENSSL_MODULES} = abs_path(bldtop_dir("test"));
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my $testcount = 5;
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plan tests => 2 * $testcount;
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use constant {
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CHANGE_HRR_CIPHERSUITE => 0,
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CHANGE_CH1_CIPHERSUITE => 1,
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DUPLICATE_HRR => 2,
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INVALID_GROUP => 3,
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NO_SUPPORTED_VERSIONS => 4
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};
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my $fatal_alert = 0;
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my $testtype = -1;
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SKIP: {
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skip "TLS 1.3 is disabled", $testcount if disabled("tls1_3");
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# Run tests with TLS
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run_tests(0);
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}
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SKIP: {
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# TODO(DTLSv1.3): This test currently does not work for DTLS. It gets stuck
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# in the first test case.
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skip "Test does not work correctly currently with DTLS-1.3", $testcount;
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skip "DTLS 1.3 is disabled", $testcount if disabled("dtls1_3");
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skip "DTLSProxy does not work on Windows", $testcount if $^O =~ /^(MSWin32)$/;
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run_tests(1);
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}
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sub run_tests
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{
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my $run_test_as_dtls = shift;
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my $proxy;
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if ($run_test_as_dtls == 1) {
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$proxy = TLSProxy::Proxy->new_dtls(
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\&hrr_filter,
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cmdstr(app([ "openssl" ]), display => 1),
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srctop_file("apps", "server.pem"),
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(!$ENV{HARNESS_ACTIVE} || $ENV{HARNESS_VERBOSE})
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);
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}
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else {
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$proxy = TLSProxy::Proxy->new(
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\&hrr_filter,
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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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}
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SKIP: {
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skip "TODO(DTLSv1.3): Test stalls when server sends its ServerHello.",
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1 if $run_test_as_dtls == 1 && disabled("ecx");
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#Test 1: A client should fail if the server changes the ciphersuite between the
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# HRR and the SH
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$proxy->clear();
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if (disabled("ec")) {
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$proxy->serverflags("-curves ffdhe3072");
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}
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else {
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$proxy->serverflags("-curves P-256");
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}
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$testtype = CHANGE_HRR_CIPHERSUITE;
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# Skip tests if TLSProxy if it fails to start. For DTLS this return is always
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# false when the handshake fails so we skip the check.
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skip "TLSProxy did not start correctly", $testcount if $proxy->start() == 0
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&& $run_test_as_dtls == 0;
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ok(TLSProxy::Message->fail(), "Server ciphersuite changes");
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}
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#Test 2: It is an error if the client changes the offered ciphersuites so that
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# we end up selecting a different ciphersuite between HRR and the SH
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$proxy->clear();
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if (disabled("ec")) {
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$proxy->serverflags("-curves ffdhe3072");
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}
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else {
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$proxy->serverflags("-curves P-384");
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}
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$proxy->ciphersuitess("TLS_AES_128_GCM_SHA256:TLS_AES_256_GCM_SHA384");
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$testtype = CHANGE_CH1_CIPHERSUITE;
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$proxy->start();
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ok(TLSProxy::Message->fail(), "Client ciphersuite changes");
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SKIP: {
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skip "TODO(DTLSv1.3): Re-enable when #26465 has been merged.",
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1 if $run_test_as_dtls == 1;
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#Test 3: A client should fail with unexpected_message alert if the server
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# sends more than 1 HRR
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$fatal_alert = 0;
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$proxy->clear();
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if (disabled("ec")) {
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$proxy->serverflags("-curves ffdhe3072");
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}
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else {
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$proxy->serverflags("-curves P-384");
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}
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$testtype = DUPLICATE_HRR;
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$proxy->start();
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ok($fatal_alert, "Server duplicated HRR");
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}
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#Test 4: If the client sends a group that is in the supported_groups list but
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# otherwise not valid (e.g. not suitable for TLSv1.3) we should reject it
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# and not consider it when sending the HRR. We send brainpoolP512r1 in
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# the ClientHello, which is acceptable to the server but is not valid in
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# TLSv1.3. We expect the server to select P-521 in the HRR and the
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# handshake to complete successfully
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SKIP: {
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skip "EC/(D)TLSv1.2 is disabled in this build", 1
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if disabled("ec") || ($run_test_as_dtls == 0 && disabled("tls1_2"))
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|| $run_test_as_dtls == 1;
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#TODO(DTLSv1.3): Fails when running with DTLS.
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# || ($run_test_as_dtls == 1 && disabled("dtls1_2"));
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$proxy->clear();
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$proxy->clientflags("-groups P-256:brainpoolP512r1:P-521");
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$proxy->serverflags("-groups brainpoolP512r1:P-521");
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$testtype = INVALID_GROUP;
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$proxy->start();
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ok(TLSProxy::Message->success(), "Invalid group with HRR");
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}
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#Test 5: A failure should occur if an HRR is sent without the supported_versions
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# extension
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$fatal_alert = 0;
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$proxy->clear();
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if (disabled("ec")) {
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$proxy->serverflags("-curves ffdhe3072");
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} else {
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$proxy->serverflags("-curves P-384");
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}
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$testtype = NO_SUPPORTED_VERSIONS;
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$proxy->start();
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ok($fatal_alert, "supported_versions missing from HRR");
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}
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sub hrr_filter
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{
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my $proxy = shift;
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if ($testtype == CHANGE_HRR_CIPHERSUITE) {
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# We're only interested in the HRR
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if ($proxy->flight != 1) {
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return;
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}
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my $hrr = ${$proxy->message_list}[1];
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# We will normally only ever select CIPHER_TLS13_AES_128_GCM_SHA256
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# because that's what Proxy tells s_server to do. Setting as below means
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# the ciphersuite will change will we get the ServerHello
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$hrr->ciphersuite(TLSProxy::Message::CIPHER_TLS13_AES_256_GCM_SHA384);
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$hrr->repack();
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return;
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}
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if ($testtype == NO_SUPPORTED_VERSIONS) {
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# Check if we have the expected fatal alert
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if ($proxy->flight == 2) {
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$fatal_alert = 1
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if @{$proxy->record_list}[-1]->is_fatal_alert(0) == TLSProxy::Message::AL_DESC_MISSING_EXTENSION;
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return;
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}
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# Otherwise we're only interested in the HRR
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if ($proxy->flight != 1) {
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return;
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}
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my $hrr = ${$proxy->message_list}[1];
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$hrr->delete_extension(TLSProxy::Message::EXT_SUPPORTED_VERSIONS);
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$hrr->repack();
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return;
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}
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if ($testtype == DUPLICATE_HRR) {
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# We're only interested in the HRR
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# and the unexpected_message alert from client
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if ($proxy->flight == 4) {
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$fatal_alert = 1
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if @{$proxy->record_list}[-1]->is_fatal_alert(0) == TLSProxy::Message::AL_DESC_UNEXPECTED_MESSAGE;
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return;
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}
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if ($proxy->flight != 3) {
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return;
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}
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# Find ServerHello record (HRR actually) and insert after that
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my $i;
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for ($i = 0; ${$proxy->record_list}[$i]->flight() < 1; $i++) {
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next;
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}
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my $hrr_record = ${$proxy->record_list}[$i];
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my $dup_hrr;
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if ($proxy->isdtls()) {
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$dup_hrr = TLSProxy::Record->new_dtls(
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1,
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3,
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$hrr_record->content_type(),
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$hrr_record->version(),
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$hrr_record->epoch(),
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$hrr_record->seq(),
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$hrr_record->len(),
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$hrr_record->sslv2(),
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$hrr_record->len_real(),
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$hrr_record->decrypt_len(),
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$hrr_record->data(),
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$hrr_record->decrypt_data());
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} else {
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$dup_hrr = TLSProxy::Record->new(
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1,
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3,
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$hrr_record->content_type(),
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$hrr_record->version(),
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$hrr_record->len(),
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$hrr_record->sslv2(),
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$hrr_record->len_real(),
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$hrr_record->decrypt_len(),
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$hrr_record->data(),
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$hrr_record->decrypt_data());
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}
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$i++;
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splice @{$proxy->record_list}, $i, 0, $dup_hrr;
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return;
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}
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if ($proxy->flight != 0) {
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return;
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}
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my $ch1 = ${$proxy->message_list}[0];
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if ($testtype == CHANGE_CH1_CIPHERSUITE) {
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# The server will always pick TLS_AES_256_GCM_SHA384
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my @ciphersuites = (TLSProxy::Message::CIPHER_TLS13_AES_128_GCM_SHA256);
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$ch1->ciphersuite_len(2 * scalar @ciphersuites);
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$ch1->ciphersuites(\@ciphersuites);
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} elsif ($testtype == INVALID_GROUP) {
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# INVALID_GROUP
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my $ext = pack "C7",
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0x00, 0x05, #List Length
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0x00, 0x1c, #brainpoolP512r1 (not compatible with TLSv1.3)
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0x00, 0x01, 0xff; #key_exchange data
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$ch1->set_extension(
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TLSProxy::Message::EXT_KEY_SHARE, $ext);
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}
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$ch1->repack();
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}
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