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      1 #! /usr/bin/env perl
      2 # Copyright 2017-2021 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 $test_name = "test_comp";
     16 setup($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 or TLSv1.2 enabled"
     28     if disabled("tls1_3") && disabled("tls1_2");
     29 
     30 $ENV{OPENSSL_ia32cap} = '~0x200000200000000';
     31 
     32 use constant {
     33     MULTIPLE_COMPRESSIONS => 0,
     34     NON_NULL_COMPRESSION => 1
     35 };
     36 my $testtype;
     37 
     38 my $proxy = TLSProxy::Proxy->new(
     39     undef,
     40     cmdstr(app(["openssl"]), display => 1),
     41     srctop_file("apps", "server.pem"),
     42     (!$ENV{HARNESS_ACTIVE} || $ENV{HARNESS_VERBOSE})
     43 );
     44 
     45 $proxy->start() or plan skip_all => "Unable to start up Proxy for tests";
     46 plan tests => 4;
     47 
     48 SKIP: {
     49     skip "TLSv1.2 disabled", 2 if disabled("tls1_2");
     50     #Test 1: Check that sending multiple compression methods in a TLSv1.2
     51     #        ClientHello succeeds
     52     $proxy->clear();
     53     $proxy->filter(\&add_comp_filter);
     54     $proxy->clientflags("-no_tls1_3");
     55     $testtype = MULTIPLE_COMPRESSIONS;
     56     $proxy->start();
     57     ok(TLSProxy::Message->success(), "Non null compression");
     58 
     59     #Test 2: NULL compression method must be present in TLSv1.2
     60     $proxy->clear();
     61     $proxy->clientflags("-no_tls1_3");
     62     $testtype = NON_NULL_COMPRESSION;
     63     $proxy->start();
     64     ok(TLSProxy::Message->fail(), "NULL compression missing");
     65 }
     66 
     67 SKIP: {
     68     skip "TLSv1.3 disabled", 2
     69         if disabled("tls1_3") || (disabled("ec") && disabled("dh"));
     70     #Test 3: Check that sending multiple compression methods in a TLSv1.3
     71     #        ClientHello fails
     72     $proxy->clear();
     73     $proxy->filter(\&add_comp_filter);
     74     $testtype = MULTIPLE_COMPRESSIONS;
     75     $proxy->start();
     76     ok(TLSProxy::Message->fail(), "Non null compression (TLSv1.3)");
     77 
     78     #Test 4: NULL compression method must be present in TLSv1.3
     79     $proxy->clear();
     80     $testtype = NON_NULL_COMPRESSION;
     81     $proxy->start();
     82     ok(TLSProxy::Message->fail(), "NULL compression missing (TLSv1.3)");
     83 }
     84 
     85 sub add_comp_filter
     86 {
     87     my $proxy = shift;
     88     my $flight;
     89     my $message;
     90     my @comp;
     91 
     92     # Only look at the ClientHello
     93     return if $proxy->flight != 0;
     94 
     95     $message = ${$proxy->message_list}[0];
     96 
     97     return if (!defined $message
     98                || $message->mt != TLSProxy::Message::MT_CLIENT_HELLO);
     99 
    100     if ($testtype == MULTIPLE_COMPRESSIONS) {
    101         @comp = (
    102             0x00, #Null compression method
    103             0xff); #Unknown compression
    104     } elsif ($testtype == NON_NULL_COMPRESSION) {
    105         @comp = (0xff); #Unknown compression
    106     }
    107     $message->comp_meths(\@comp);
    108     $message->comp_meth_len(scalar @comp);
    109     $message->repack();
    110 }
    111