test/recipes/70-test_tls13psk.t

   1 #! /usr/bin/env perl
   2 # Copyright 2017-2018 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");
  29
  30 $ENV{OPENSSL_ia32cap} = '~0x200000200000000';
  31 $ENV{CTLOG_FILE} = srctop_file("test", "ct", "log_list.conf");
  32
  33 my $proxy = TLSProxy::Proxy->new(
  34     undef,
  35     cmdstr(app(["openssl"]), display => 1),
  36     srctop_file("apps", "server.pem"),
  37     (!$ENV{HARNESS_ACTIVE} || $ENV{HARNESS_VERBOSE})
  38 );
  39
  40 use constant {
  41     PSK_LAST_FIRST_CH => 0,
  42     ILLEGAL_EXT_SECOND_CH => 1
  43 };
  44
  45 #Most PSK tests are done in test_ssl_new. This tests various failure scenarios
  46 #around PSK
  47
  48 #Test 1: First get a session
  49 (undef, my $session) = tempfile();
  50 $proxy->clientflags("-sess_out ".$session);
  51 $proxy->serverflags("-servername localhost");
  52 $proxy->sessionfile($session);
  53 $proxy->start() or plan skip_all => "Unable to start up Proxy for tests";
  54 plan tests => 5;
  55 ok(TLSProxy::Message->success(), "Initial connection");
  56
  57 #Test 2: Attempt a resume with PSK not in last place. Should fail
  58 $proxy->clear();
  59 $proxy->clientflags("-sess_in ".$session);
  60 $proxy->filter(\&modify_psk_filter);
  61 my $testtype = PSK_LAST_FIRST_CH;
  62 $proxy->start();
  63 ok(TLSProxy::Message->fail(), "PSK not last");
  64
  65 #Test 3: Attempt a resume after an HRR where PSK hash matches selected
  66 #        ciphersuite. Should see PSK on second ClientHello
  67 $proxy->clear();
  68 $proxy->clientflags("-sess_in ".$session);
  69 $proxy->serverflags("-curves P-256");
  70 $proxy->filter(undef);
  71 $proxy->start();
  72 #Check if the PSK is present in the second ClientHello
  73 my $ch2 = ${$proxy->message_list}[2];
  74 my $ch2seen = defined $ch2 && $ch2->mt() == TLSProxy::Message::MT_CLIENT_HELLO;
  75 my $pskseen = $ch2seen
  76               && defined ${$ch2->{extension_data}}{TLSProxy::Message::EXT_PSK};
  77 ok($pskseen, "PSK hash matches");
  78
  79 #Test 4: Attempt a resume after an HRR where PSK hash does not match selected
  80 #        ciphersuite. Should not see PSK on second ClientHello
  81 $proxy->clear();
  82 $proxy->clientflags("-sess_in ".$session);
  83 $proxy->filter(\&modify_psk_filter);
  84 $proxy->serverflags("-curves P-256");
  85 $proxy->ciphersuitesc("TLS_AES_128_GCM_SHA256:TLS_AES_256_GCM_SHA384");
  86 $proxy->ciphersuitess("TLS_AES_256_GCM_SHA384");
  87 #We force an early failure because TLS Proxy doesn't actually support
  88 #TLS_AES_256_GCM_SHA384. That doesn't matter for this test though.
  89 $testtype = ILLEGAL_EXT_SECOND_CH;
  90 $proxy->start();
  91 #Check if the PSK is present in the second ClientHello
  92 $ch2 = ${$proxy->message_list}[2];
  93 $ch2seen = defined $ch2 && $ch2->mt() == TLSProxy::Message::MT_CLIENT_HELLO;
  94 $pskseen = $ch2seen
  95            && defined ${$ch2->extension_data}{TLSProxy::Message::EXT_PSK};
  96 ok($ch2seen && !$pskseen, "PSK hash does not match");
  97
  98 #Test 5: Attempt a resume without a sig agls extension. Should succeed because
  99 #        sig algs is not needed in a resumption.
 100 $proxy->clear();
 101 $proxy->clientflags("-sess_in ".$session);
 102 $proxy->filter(\&remove_sig_algs_filter);
 103 $proxy->start();
 104 ok(TLSProxy::Message->success(), "Remove sig algs");
 105
 106 unlink $session;
 107
 108 sub modify_psk_filter
 109 {
 110     my $proxy = shift;
 111     my $flight;
 112     my $message;
 113
 114     if ($testtype == PSK_LAST_FIRST_CH) {
 115         $flight = 0;
 116     } else {
 117         $flight = 2;
 118     }
 119
 120     # Only look at the first or second ClientHello
 121     return if $proxy->flight != $flight;
 122
 123     if ($testtype == PSK_LAST_FIRST_CH) {
 124         $message = ${$proxy->message_list}[0];
 125     } else {
 126         $message = ${$proxy->message_list}[2];
 127     }
 128
 129     return if (!defined $message
 130                || $message->mt != TLSProxy::Message::MT_CLIENT_HELLO);
 131
 132     if ($testtype == PSK_LAST_FIRST_CH) {
 133         $message->set_extension(TLSProxy::Message::EXT_FORCE_LAST, "");
 134     } else {
 135         #Deliberately break the connection
 136         $message->set_extension(TLSProxy::Message::EXT_SUPPORTED_GROUPS, "");
 137     }
 138     $message->repack();
 139 }
 140
 141 sub remove_sig_algs_filter
 142 {
 143     my $proxy = shift;
 144     my $message;
 145
 146     # Only look at the first ClientHello
 147     return if $proxy->flight != 0;
 148
 149     $message = ${$proxy->message_list}[0];
 150     $message->delete_extension(TLSProxy::Message::EXT_SIG_ALGS);
 151     $message->repack();
 152 }