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/*
Copyright (C) 2013-2015 Carl Hetherington <cth@carlh.net>
This file is part of libdcp.
libdcp is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
libdcp is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with libdcp. If not, see <http://www.gnu.org/licenses/>.
*/
#include "certificate.h"
#include "decrypted_kdm.h"
#include "encrypted_kdm.h"
#include "certificate_chain.h"
#include "mono_picture_asset.h"
#include "sound_asset.h"
#include "reel.h"
#include "test.h"
#include "cpl.h"
#include "mono_picture_frame.h"
#include "certificate_chain.h"
#include "mono_picture_asset_writer.h"
#include "mono_picture_asset_reader.h"
#include "reel_picture_asset.h"
#include "reel_mono_picture_asset.h"
#include "file.h"
#include "openjpeg_image.h"
#include "rgb_xyz.h"
#include "colour_conversion.h"
#include <boost/test/unit_test.hpp>
#include <boost/scoped_array.hpp>
#include <iostream>
using std::list;
using std::vector;
using boost::shared_ptr;
using boost::scoped_array;
/** Build an encrypted picture asset and a KDM for it and check that the KDM can be decrypted */
BOOST_AUTO_TEST_CASE (round_trip_test)
{
shared_ptr<dcp::CertificateChain> signer (new dcp::CertificateChain (boost::filesystem::path ("openssl")));
boost::filesystem::path work_dir = "build/test/round_trip_test";
boost::filesystem::create_directory (work_dir);
shared_ptr<dcp::MonoPictureAsset> asset_A (new dcp::MonoPictureAsset (dcp::Fraction (24, 1)));
shared_ptr<dcp::PictureAssetWriter> writer = asset_A->start_write (work_dir / "video.mxf", dcp::SMPTE, false);
dcp::File j2c ("test/data/32x32_red_square.j2c");
for (int i = 0; i < 24; ++i) {
writer->write (j2c.data (), j2c.size ());
}
writer->finalize ();
dcp::Key key;
asset_A->set_key (key);
shared_ptr<dcp::CPL> cpl (new dcp::CPL ("A Test DCP", dcp::FEATURE));
shared_ptr<dcp::Reel> reel (new dcp::Reel ());
reel->add (shared_ptr<dcp::ReelMonoPictureAsset> (new dcp::ReelMonoPictureAsset (asset_A, 0)));
cpl->add (reel);
/* A KDM using our certificate chain's leaf key pair */
dcp::DecryptedKDM kdm_A (
cpl,
key,
dcp::LocalTime ("2013-01-01T00:00:00+00:00"),
dcp::LocalTime ("2013-01-08T00:00:00+00:00"),
"libdcp",
"test",
"2012-07-17T04:45:18+00:00"
);
boost::filesystem::path const kdm_file = work_dir / "kdm.xml";
kdm_A.encrypt(signer, signer->leaf(), vector<dcp::Certificate>(), dcp::MODIFIED_TRANSITIONAL_1).as_xml (kdm_file);
/* Reload the KDM, using our private key to decrypt it */
dcp::DecryptedKDM kdm_B (dcp::EncryptedKDM (dcp::file_to_string (kdm_file)), signer->key().get ());
/* Check that the decrypted KDMKeys are the same as the ones we started with */
BOOST_CHECK_EQUAL (kdm_A.keys().size(), kdm_B.keys().size());
list<dcp::DecryptedKDMKey> keys_A = kdm_A.keys ();
list<dcp::DecryptedKDMKey> keys_B = kdm_B.keys ();
list<dcp::DecryptedKDMKey>::const_iterator i = keys_A.begin();
list<dcp::DecryptedKDMKey>::const_iterator j = keys_B.begin();
while (i != keys_A.end ()) {
BOOST_CHECK (*i == *j);
++i;
++j;
}
/* Reload the picture asset */
shared_ptr<dcp::MonoPictureAsset> asset_B (
new dcp::MonoPictureAsset (work_dir / "video.mxf")
);
BOOST_CHECK (!kdm_B.keys().empty ());
asset_B->set_key (kdm_B.keys().front().key());
shared_ptr<dcp::OpenJPEGImage> xyz_A = asset_A->start_read()->get_frame(0)->xyz_image ();
shared_ptr<dcp::OpenJPEGImage> xyz_B = asset_B->start_read()->get_frame(0)->xyz_image ();
scoped_array<uint8_t> frame_A (new uint8_t[xyz_A->size().width * xyz_A->size().height * 4]);
dcp::xyz_to_rgba (xyz_A, dcp::ColourConversion::srgb_to_xyz(), frame_A.get(), xyz_A->size().width * 4);
scoped_array<uint8_t> frame_B (new uint8_t[xyz_B->size().width * xyz_B->size().height * 4]);
dcp::xyz_to_rgba (xyz_B, dcp::ColourConversion::srgb_to_xyz(), frame_B.get(), xyz_B->size().width * 4);
BOOST_CHECK_EQUAL (xyz_A->size().width, xyz_B->size().width);
BOOST_CHECK_EQUAL (xyz_A->size().height, xyz_B->size().height);
BOOST_CHECK_EQUAL (memcmp (frame_A.get(), frame_B.get(), xyz_A->size().width * xyz_A->size().height * 4), 0);
}
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