#! /usr/bin/env perl
# Copyright 2017-2021 The OpenSSL Project Authors. All Rights Reserved.
#
# Licensed under the Apache License 2.0 (the "License").  You may not use
# this file except in compliance with the License.  You can obtain a copy
# in the file LICENSE in the source distribution or at
# https://www.openssl.org/source/license.html


use strict;
use warnings;

use File::Spec;
use OpenSSL::Glob;
use OpenSSL::Test qw/:DEFAULT data_file/;
use OpenSSL::Test::Utils;

setup("test_dhparam_check");

plan skip_all => "DH isn't supported in this build"
    if disabled("dh");

=pod Generation script

#!/bin/sh

TESTDIR=test/recipes/20-test_dhparam_check_data/valid
rm -rf $TESTDIR
mkdir -p $TESTDIR

./util/opensslwrap.sh genpkey -genparam -algorithm DH -pkeyopt dh_rfc5114:1 -out $TESTDIR/dh_5114_1.pem
./util/opensslwrap.sh genpkey -genparam -algorithm DH -pkeyopt dh_rfc5114:2 -out $TESTDIR/dh_5114_2.pem
./util/opensslwrap.sh genpkey -genparam -algorithm DH -pkeyopt dh_rfc5114:3 -out $TESTDIR/dh_5114_3.pem
./util/opensslwrap.sh genpkey -genparam -algorithm DHX -pkeyopt dh_rfc5114:2 -out $TESTDIR/dhx_5114_2.pem

./util/opensslwrap.sh genpkey -genparam -algorithm DHX -pkeyopt pbits:1024 -pkeyopt qbits:160 -pkeyopt type:fips186_2 -out $TESTDIR/dhx_p1024_q160_t1862.pem
./util/opensslwrap.sh genpkey -genparam -algorithm DHX -pkeyopt pbits:1024 -pkeyopt qbits:224 -pkeyopt type:fips186_2 -out $TESTDIR/dhx_p1024_q224_t1862.pem
./util/opensslwrap.sh genpkey -genparam -algorithm DHX -pkeyopt pbits:1024 -pkeyopt qbits:256 -pkeyopt type:fips186_2 -out $TESTDIR/dhx_p1024_q256_t1862.pem

./util/opensslwrap.sh genpkey -genparam -algorithm DHX -pkeyopt pbits:1024 -pkeyopt qbits:160 -pkeyopt type:fips186_4 -out $TESTDIR/dhx_p1024_q160_t1864.pem

./util/opensslwrap.sh genpkey -genparam -algorithm DHX -pkeyopt pbits:2048 -pkeyopt qbits:160 -pkeyopt type:fips186_2 -out $TESTDIR/dhx_p2048_q160_t1862.pem
./util/opensslwrap.sh genpkey -genparam -algorithm DHX -pkeyopt pbits:2048 -pkeyopt qbits:224 -pkeyopt type:fips186_2 -out $TESTDIR/dhx_p2048_q224_t1862.pem
./util/opensslwrap.sh genpkey -genparam -algorithm DHX -pkeyopt pbits:2048 -pkeyopt qbits:256 -pkeyopt type:fips186_2 -out $TESTDIR/dhx_p2048_q256_t1862.pem

./util/opensslwrap.sh genpkey -genparam -algorithm DHX -pkeyopt pbits:2048 -pkeyopt qbits:224 -pkeyopt type:fips186_4 -out $TESTDIR/dhx_p2048_q224_t1864.pem
./util/opensslwrap.sh genpkey -genparam -algorithm DHX -pkeyopt pbits:2048 -pkeyopt qbits:256 -pkeyopt type:fips186_4 -out $TESTDIR/dhx_p2048_q256_t1864.pem

./util/opensslwrap.sh genpkey -genparam -algorithm DHX -pkeyopt pbits:3072 -pkeyopt qbits:160 -pkeyopt type:fips186_2 -out $TESTDIR/dhx_p3072_q160_t1862.pem
./util/opensslwrap.sh genpkey -genparam -algorithm DHX -pkeyopt pbits:3072 -pkeyopt qbits:224 -pkeyopt type:fips186_2 -out $TESTDIR/dhx_p3072_q224_t1862.pem
./util/opensslwrap.sh genpkey -genparam -algorithm DHX -pkeyopt pbits:3072 -pkeyopt qbits:256 -pkeyopt type:fips186_2 -out $TESTDIR/dhx_p3072_q256_t1862.pem

./util/opensslwrap.sh genpkey -genparam -algorithm DH -pkeyopt group:ffdhe2048 -out $TESTDIR/dh_ffdhe2048.pem
./util/opensslwrap.sh genpkey -genparam -algorithm DHX -pkeyopt group:ffdhe2048 -out $TESTDIR/dhx_ffdhe2048.pem


=cut

my @valid = glob(data_file("valid", "*.pem"));
my @invalid = glob(data_file("invalid", "*.pem"));

my $num_tests = scalar @valid + scalar @invalid;
plan tests => 2 + 2 * $num_tests;

foreach (@valid) {
    ok(run(app([qw{openssl dhparam -noout -check -in}, $_])));
    ok(run(app([qw{openssl pkeyparam -noout -check -in}, $_])));
}

foreach (@invalid) {
    ok(!run(app([qw{openssl dhparam -noout -check -in}, $_])));
    ok(!run(app([qw{openssl pkeyparam -noout -check -in}, $_])));
}

my $tmpfile = 'out.txt';

sub contains {
    my $expected = shift;
    my $found = 0;
    open(my $in, '<', $tmpfile) or die "Could not open file $tmpfile";
    while(<$in>) {
        $found = 1 if m/$expected/; # output must include $expected
    }
    close $in;
    return $found;
}

# Check that if we load dh params with only a 'p' and 'g' that it detects
# that this is actually a valid named group.
ok(run(app([qw{openssl pkeyparam -text -in}, data_file("valid/dh_ffdhe2048.pem")], stdout => $tmpfile)));
ok(contains("ffdhe2048"))