test/recipes/70-test_tls13psk.t

   1 #! /usr/bin/env perl
   2 # Copyright 2017-2023 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
   9 use strict;
  10 use OpenSSL::Test qw/:DEFAULT cmdstr srctop_file srctop_dir bldtop_dir/;
  11 use OpenSSL::Test::Utils;
  12 use File::Temp qw(tempfile);
  13 use TLSProxy::Proxy;
  14
  15 my $test_name = "test_tls13psk";
  16 setup($test_name);
  17
  18 plan skip_all => "TLSProxy isn't usable on $^O"
  19     if $^O =~ /^(VMS)$/;
  20
  21 plan skip_all => "$test_name needs the dynamic engine feature enabled"
  22     if disabled("engine") || disabled("dynamic-engine");
  23
  24 plan skip_all => "$test_name needs the sock feature enabled"
  25     if disabled("sock");
  26
  27 plan skip_all => "$test_name needs TLSv1.3 enabled"
  28     if disabled("tls1_3") || (disabled("ec") && disabled("dh"));
  29
  30 my $proxy = TLSProxy::Proxy->new(
  31     undef,
  32     cmdstr(app(["openssl"]), display => 1),
  33     srctop_file("apps", "server.pem"),
  34     (!$ENV{HARNESS_ACTIVE} || $ENV{HARNESS_VERBOSE})
  35 );
  36
  37 use constant {
  38     PSK_LAST_FIRST_CH => 0,
  39     ILLEGAL_EXT_SECOND_CH => 1
  40 };
  41
  42 #Most PSK tests are done in test_ssl_new. This tests various failure scenarios
  43 #around PSK
  44
  45 #Test 1: First get a session
  46 (undef, my $session) = tempfile();
  47 $proxy->clientflags("-sess_out ".$session);
  48 $proxy->serverflags("-servername localhost");
  49 $proxy->sessionfile($session);
  50 $proxy->start() or plan skip_all => "Unable to start up Proxy for tests";
  51 plan tests => 5;
  52 ok(TLSProxy::Message->success(), "Initial connection");
  53
  54 #Test 2: Attempt a resume with PSK not in last place. Should fail
  55 $proxy->clear();
  56 $proxy->clientflags("-sess_in ".$session);
  57 $proxy->filter(\&modify_psk_filter);
  58 my $testtype = PSK_LAST_FIRST_CH;
  59 $proxy->start();
  60 ok(TLSProxy::Message->fail(), "PSK not last");
  61
  62 #Test 3: Attempt a resume after an HRR where PSK hash matches selected
  63 #        ciphersuite. Should see PSK on second ClientHello
  64 $proxy->clear();
  65 $proxy->clientflags("-sess_in ".$session);
  66 if (disabled("ec")) {
  67     $proxy->serverflags("-curves ffdhe3072");
  68 } else {
  69     $proxy->serverflags("-curves P-384");
  70 }
  71 $proxy->filter(undef);
  72 $proxy->start();
  73 #Check if the PSK is present in the second ClientHello
  74 my $ch2 = ${$proxy->message_list}[2];
  75 my $ch2seen = defined $ch2 && $ch2->mt() == TLSProxy::Message::MT_CLIENT_HELLO;
  76 my $pskseen = $ch2seen
  77               && defined ${$ch2->{extension_data}}{TLSProxy::Message::EXT_PSK};
  78 ok($pskseen, "PSK hash matches");
  79
  80 #Test 4: Attempt a resume after an HRR where PSK hash does not match selected
  81 #        ciphersuite. Should not see PSK on second ClientHello
  82 $proxy->clear();
  83 $proxy->clientflags("-sess_in ".$session);
  84 $proxy->filter(\&modify_psk_filter);
  85 if (disabled("ec")) {
  86     $proxy->serverflags("-curves ffdhe3072");
  87 } else {
  88     $proxy->serverflags("-curves P-384");
  89 }
  90 $proxy->ciphersuitesc("TLS_AES_128_GCM_SHA256:TLS_AES_256_GCM_SHA384");
  91 $proxy->ciphersuitess("TLS_AES_256_GCM_SHA384");
  92 #We force an early failure because TLS Proxy doesn't actually support
  93 #TLS_AES_256_GCM_SHA384. That doesn't matter for this test though.
  94 $testtype = ILLEGAL_EXT_SECOND_CH;
  95 $proxy->start();
  96 #Check if the PSK is present in the second ClientHello
  97 $ch2 = ${$proxy->message_list}[2];
  98 $ch2seen = defined $ch2 && $ch2->mt() == TLSProxy::Message::MT_CLIENT_HELLO;
  99 $pskseen = $ch2seen
 100            && defined ${$ch2->extension_data}{TLSProxy::Message::EXT_PSK};
 101 ok($ch2seen && !$pskseen, "PSK hash does not match");
 102
 103 #Test 5: Attempt a resume without a sig agls extension. Should succeed because
 104 #        sig algs is not needed in a resumption.
 105 $proxy->clear();
 106 $proxy->clientflags("-sess_in ".$session);
 107 $proxy->filter(\&remove_sig_algs_filter);
 108 $proxy->start();
 109 ok(TLSProxy::Message->success(), "Remove sig algs");
 110
 111 unlink $session;
 112
 113 sub modify_psk_filter
 114 {
 115     my $proxy = shift;
 116     my $flight;
 117     my $message;
 118
 119     if ($testtype == PSK_LAST_FIRST_CH) {
 120         $flight = 0;
 121     } else {
 122         $flight = 2;
 123     }
 124
 125     # Only look at the first or second ClientHello
 126     return if $proxy->flight != $flight;
 127
 128     if ($testtype == PSK_LAST_FIRST_CH) {
 129         $message = ${$proxy->message_list}[0];
 130     } else {
 131         $message = ${$proxy->message_list}[2];
 132     }
 133
 134     return if (!defined $message
 135                || $message->mt != TLSProxy::Message::MT_CLIENT_HELLO);
 136
 137     if ($testtype == PSK_LAST_FIRST_CH) {
 138         $message->set_extension(TLSProxy::Message::EXT_FORCE_LAST, "");
 139     } else {
 140         #Deliberately break the connection
 141         $message->set_extension(TLSProxy::Message::EXT_SUPPORTED_GROUPS, "");
 142     }
 143     $message->repack();
 144 }
 145
 146 sub remove_sig_algs_filter
 147 {
 148     my $proxy = shift;
 149     my $message;
 150
 151     # Only look at the first ClientHello
 152     return if $proxy->flight != 0;
 153
 154     $message = ${$proxy->message_list}[0];
 155     $message->delete_extension(TLSProxy::Message::EXT_SIG_ALGS);
 156     $message->repack();
 157 }