/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2013-2023 Regents of the University of California.
 *
 * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
 *
 * ndn-cxx library is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later version.
 *
 * ndn-cxx library 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 Lesser General Public License for more details.
 *
 * You should have received copies of the GNU General Public License and GNU Lesser
 * General Public License along with ndn-cxx, e.g., in COPYING.md file.  If not, see
 * <http://www.gnu.org/licenses/>.
 *
 * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
 */

#include "ndn-cxx/security/transform/digest-filter.hpp"

#include "ndn-cxx/encoding/buffer-stream.hpp"
#include "ndn-cxx/security/transform/buffer-source.hpp"
#include "ndn-cxx/security/transform/step-source.hpp"
#include "ndn-cxx/security/transform/stream-sink.hpp"

#include "tests/boost-test.hpp"

#include <openssl/evp.h>

namespace ndn::tests {

using namespace ndn::security::transform;

BOOST_AUTO_TEST_SUITE(Security)
BOOST_AUTO_TEST_SUITE(Transform)
BOOST_AUTO_TEST_SUITE(TestDigestFilter)

static const uint8_t in[] = {
  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
};
static const uint8_t out[] = {
  0x3e, 0x14, 0xfd, 0x66, 0x9a, 0x79, 0x80, 0x65,
  0xc4, 0x0d, 0x61, 0xf8, 0x6a, 0xc7, 0x98, 0x29,
  0xc0, 0x6b, 0x90, 0x8f, 0xbb, 0x19, 0xa0, 0x85,
  0xf7, 0xfa, 0x7b, 0x2d, 0xd6, 0x8c, 0xd5, 0xa3
};

BOOST_AUTO_TEST_CASE(BufferInput)
{
  OBufferStream os;
  bufferSource(in) >> digestFilter(DigestAlgorithm::SHA256) >> streamSink(os);
  BOOST_CHECK_EQUAL_COLLECTIONS(out, out + sizeof(out), os.buf()->begin(), os.buf()->end());
}

BOOST_AUTO_TEST_CASE(StepInput)
{
  StepSource source;
  OBufferStream os;
  source >> digestFilter(DigestAlgorithm::SHA256) >> streamSink(os);
  source.write({in, 32});
  source.write({in + 32, 1});
  source.write({in + 33, 2});
  source.write({in + 35, 3});
  source.write({in + 38, 26});
  source.write({in + 64, 64});
  source.end();
  BOOST_CHECK_EQUAL_COLLECTIONS(out, out + sizeof(out), os.buf()->begin(), os.buf()->end());
}

BOOST_AUTO_TEST_CASE(AlgorithmNone)
{
  BOOST_CHECK_THROW(DigestFilter{DigestAlgorithm::NONE}, Error);
}

BOOST_AUTO_TEST_CASE(AlgorithmSha224)
{
  const uint8_t out[] = {
    0xd1, 0x4a, 0x02, 0x8c, 0x2a, 0x3a, 0x2b, 0xc9, 0x47, 0x61, 0x02, 0xbb, 0x28, 0x82, 0x34, 0xc4,
    0x15, 0xa2, 0xb0, 0x1f, 0x82, 0x8e, 0xa6, 0x2a, 0xc5, 0xb3, 0xe4, 0x2f,
  };
  OBufferStream os;
  bufferSource("") >> digestFilter(DigestAlgorithm::SHA224) >> streamSink(os);
  BOOST_CHECK_EQUAL_COLLECTIONS(out, out + sizeof(out), os.buf()->begin(), os.buf()->end());
}

BOOST_AUTO_TEST_CASE(AlgorithmSha256)
{
  const uint8_t out[] = {
    0xe3, 0xb0, 0xc4, 0x42, 0x98, 0xfc, 0x1c, 0x14, 0x9a, 0xfb, 0xf4, 0xc8, 0x99, 0x6f, 0xb9, 0x24,
    0x27, 0xae, 0x41, 0xe4, 0x64, 0x9b, 0x93, 0x4c, 0xa4, 0x95, 0x99, 0x1b, 0x78, 0x52, 0xb8, 0x55,
  };
  OBufferStream os;
  bufferSource("") >> digestFilter(DigestAlgorithm::SHA256) >> streamSink(os);
  BOOST_CHECK_EQUAL_COLLECTIONS(out, out + sizeof(out), os.buf()->begin(), os.buf()->end());
}

BOOST_AUTO_TEST_CASE(AlgorithmSha384)
{
  const uint8_t out[] = {
    0x38, 0xb0, 0x60, 0xa7, 0x51, 0xac, 0x96, 0x38, 0x4c, 0xd9, 0x32, 0x7e, 0xb1, 0xb1, 0xe3, 0x6a,
    0x21, 0xfd, 0xb7, 0x11, 0x14, 0xbe, 0x07, 0x43, 0x4c, 0x0c, 0xc7, 0xbf, 0x63, 0xf6, 0xe1, 0xda,
    0x27, 0x4e, 0xde, 0xbf, 0xe7, 0x6f, 0x65, 0xfb, 0xd5, 0x1a, 0xd2, 0xf1, 0x48, 0x98, 0xb9, 0x5b,
  };
  OBufferStream os;
  bufferSource("") >> digestFilter(DigestAlgorithm::SHA384) >> streamSink(os);
  BOOST_CHECK_EQUAL_COLLECTIONS(out, out + sizeof(out), os.buf()->begin(), os.buf()->end());
}

BOOST_AUTO_TEST_CASE(AlgorithmSha512)
{
  const uint8_t out[] = {
    0xcf, 0x83, 0xe1, 0x35, 0x7e, 0xef, 0xb8, 0xbd, 0xf1, 0x54, 0x28, 0x50, 0xd6, 0x6d, 0x80, 0x07,
    0xd6, 0x20, 0xe4, 0x05, 0x0b, 0x57, 0x15, 0xdc, 0x83, 0xf4, 0xa9, 0x21, 0xd3, 0x6c, 0xe9, 0xce,
    0x47, 0xd0, 0xd1, 0x3c, 0x5d, 0x85, 0xf2, 0xb0, 0xff, 0x83, 0x18, 0xd2, 0x87, 0x7e, 0xec, 0x2f,
    0x63, 0xb9, 0x31, 0xbd, 0x47, 0x41, 0x7a, 0x81, 0xa5, 0x38, 0x32, 0x7a, 0xf9, 0x27, 0xda, 0x3e,
  };
  OBufferStream os;
  bufferSource("") >> digestFilter(DigestAlgorithm::SHA512) >> streamSink(os);
  BOOST_CHECK_EQUAL_COLLECTIONS(out, out + sizeof(out), os.buf()->begin(), os.buf()->end());
}

#ifndef OPENSSL_NO_BLAKE2
BOOST_AUTO_TEST_CASE(AlgorithmBlake2b_512)
{
  const uint8_t out[] = {
    0x78, 0x6a, 0x02, 0xf7, 0x42, 0x01, 0x59, 0x03, 0xc6, 0xc6, 0xfd, 0x85, 0x25, 0x52, 0xd2, 0x72,
    0x91, 0x2f, 0x47, 0x40, 0xe1, 0x58, 0x47, 0x61, 0x8a, 0x86, 0xe2, 0x17, 0xf7, 0x1f, 0x54, 0x19,
    0xd2, 0x5e, 0x10, 0x31, 0xaf, 0xee, 0x58, 0x53, 0x13, 0x89, 0x64, 0x44, 0x93, 0x4e, 0xb0, 0x4b,
    0x90, 0x3a, 0x68, 0x5b, 0x14, 0x48, 0xb7, 0x55, 0xd5, 0x6f, 0x70, 0x1a, 0xfe, 0x9b, 0xe2, 0xce,
  };
  OBufferStream os;
  bufferSource("") >> digestFilter(DigestAlgorithm::BLAKE2B_512) >> streamSink(os);
  BOOST_CHECK_EQUAL_COLLECTIONS(out, out + sizeof(out), os.buf()->begin(), os.buf()->end());
}

BOOST_AUTO_TEST_CASE(AlgorithmBlake2s_256)
{
  const uint8_t out[] = {
    0x69, 0x21, 0x7a, 0x30, 0x79, 0x90, 0x80, 0x94, 0xe1, 0x11, 0x21, 0xd0, 0x42, 0x35, 0x4a, 0x7c,
    0x1f, 0x55, 0xb6, 0x48, 0x2c, 0xa1, 0xa5, 0x1e, 0x1b, 0x25, 0x0d, 0xfd, 0x1e, 0xd0, 0xee, 0xf9,
  };
  OBufferStream os;
  bufferSource("") >> digestFilter(DigestAlgorithm::BLAKE2S_256) >> streamSink(os);
  BOOST_CHECK_EQUAL_COLLECTIONS(out, out + sizeof(out), os.buf()->begin(), os.buf()->end());
}
#endif // !OPENSSL_NO_BLAKE2

BOOST_AUTO_TEST_CASE(AlgorithmSha3_224)
{
  const uint8_t out[] = {
    0x6b, 0x4e, 0x03, 0x42, 0x36, 0x67, 0xdb, 0xb7, 0x3b, 0x6e, 0x15, 0x45, 0x4f, 0x0e, 0xb1, 0xab,
    0xd4, 0x59, 0x7f, 0x9a, 0x1b, 0x07, 0x8e, 0x3f, 0x5b, 0x5a, 0x6b, 0xc7,
  };
  OBufferStream os;
  bufferSource("") >> digestFilter(DigestAlgorithm::SHA3_224) >> streamSink(os);
  BOOST_CHECK_EQUAL_COLLECTIONS(out, out + sizeof(out), os.buf()->begin(), os.buf()->end());
}

BOOST_AUTO_TEST_CASE(AlgorithmSha3_256)
{
  const uint8_t out[] = {
    0xa7, 0xff, 0xc6, 0xf8, 0xbf, 0x1e, 0xd7, 0x66, 0x51, 0xc1, 0x47, 0x56, 0xa0, 0x61, 0xd6, 0x62,
    0xf5, 0x80, 0xff, 0x4d, 0xe4, 0x3b, 0x49, 0xfa, 0x82, 0xd8, 0x0a, 0x4b, 0x80, 0xf8, 0x43, 0x4a,
  };
  OBufferStream os;
  bufferSource("") >> digestFilter(DigestAlgorithm::SHA3_256) >> streamSink(os);
  BOOST_CHECK_EQUAL_COLLECTIONS(out, out + sizeof(out), os.buf()->begin(), os.buf()->end());
}

BOOST_AUTO_TEST_CASE(AlgorithmSha3_384)
{
  const uint8_t out[] = {
    0x0c, 0x63, 0xa7, 0x5b, 0x84, 0x5e, 0x4f, 0x7d, 0x01, 0x10, 0x7d, 0x85, 0x2e, 0x4c, 0x24, 0x85,
    0xc5, 0x1a, 0x50, 0xaa, 0xaa, 0x94, 0xfc, 0x61, 0x99, 0x5e, 0x71, 0xbb, 0xee, 0x98, 0x3a, 0x2a,
    0xc3, 0x71, 0x38, 0x31, 0x26, 0x4a, 0xdb, 0x47, 0xfb, 0x6b, 0xd1, 0xe0, 0x58, 0xd5, 0xf0, 0x04,
  };
  OBufferStream os;
  bufferSource("") >> digestFilter(DigestAlgorithm::SHA3_384) >> streamSink(os);
  BOOST_CHECK_EQUAL_COLLECTIONS(out, out + sizeof(out), os.buf()->begin(), os.buf()->end());
}

BOOST_AUTO_TEST_CASE(AlgorithmSha3_512)
{
  const uint8_t out[] = {
    0xa6, 0x9f, 0x73, 0xcc, 0xa2, 0x3a, 0x9a, 0xc5, 0xc8, 0xb5, 0x67, 0xdc, 0x18, 0x5a, 0x75, 0x6e,
    0x97, 0xc9, 0x82, 0x16, 0x4f, 0xe2, 0x58, 0x59, 0xe0, 0xd1, 0xdc, 0xc1, 0x47, 0x5c, 0x80, 0xa6,
    0x15, 0xb2, 0x12, 0x3a, 0xf1, 0xf5, 0xf9, 0x4c, 0x11, 0xe3, 0xe9, 0x40, 0x2c, 0x3a, 0xc5, 0x58,
    0xf5, 0x00, 0x19, 0x9d, 0x95, 0xb6, 0xd3, 0xe3, 0x01, 0x75, 0x85, 0x86, 0x28, 0x1d, 0xcd, 0x26,
  };
  OBufferStream os;
  bufferSource("") >> digestFilter(DigestAlgorithm::SHA3_512) >> streamSink(os);
  BOOST_CHECK_EQUAL_COLLECTIONS(out, out + sizeof(out), os.buf()->begin(), os.buf()->end());
}

BOOST_AUTO_TEST_SUITE_END() // TestDigestFilter
BOOST_AUTO_TEST_SUITE_END() // Transform
BOOST_AUTO_TEST_SUITE_END() // Security

} // namespace ndn::tests