/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2013-2020 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/signature-sha256-with-ecdsa.hpp"
#include "ndn-cxx/security/verification-helpers.hpp"
#include "ndn-cxx/util/scheduler.hpp"

#include "tests/test-common.hpp"
#include "tests/unit/io-key-chain-fixture.hpp"

namespace ndn {
namespace security {
namespace tests {

using namespace ndn::tests;

class SignatureSha256EcdsaTimeFixture : public IoKeyChainFixture
{
public:
  SignatureSha256EcdsaTimeFixture()
    : scheduler(m_io)
  {
  }

public:
  Scheduler scheduler;
};

BOOST_AUTO_TEST_SUITE(Security)
BOOST_FIXTURE_TEST_SUITE(TestSignatureSha256WithEcdsa, SignatureSha256EcdsaTimeFixture)

const uint8_t sigInfo[] = {
  0x16, 0x1b, // SignatureInfo
    0x1b, 0x01, // SignatureType
      0x03,
    0x1c, 0x16, // KeyLocator
      0x07, 0x14, // Name: /test/key/locator
        0x08, 0x04,
          0x74, 0x65, 0x73, 0x74,
        0x08, 0x03,
          0x6b, 0x65, 0x79,
        0x08, 0x07,
          0x6c, 0x6f, 0x63, 0x61, 0x74, 0x6f, 0x72
};

const uint8_t sigValue[] = {
  0x17, 0x40, // SignatureValue
    0x2f, 0xd6, 0xf1, 0x6e, 0x80, 0x6f, 0x10, 0xbe, 0xb1, 0x6f, 0x3e, 0x31, 0xec,
    0xe3, 0xb9, 0xea, 0x83, 0x30, 0x40, 0x03, 0xfc, 0xa0, 0x13, 0xd9, 0xb3, 0xc6,
    0x25, 0x16, 0x2d, 0xa6, 0x58, 0x41, 0x69, 0x62, 0x56, 0xd8, 0xb3, 0x6a, 0x38,
    0x76, 0x56, 0xea, 0x61, 0xb2, 0x32, 0x70, 0x1c, 0xb6, 0x4d, 0x10, 0x1d, 0xdc,
    0x92, 0x8e, 0x52, 0xa5, 0x8a, 0x1d, 0xd9, 0x96, 0x5e, 0xc0, 0x62, 0x0b
};


BOOST_AUTO_TEST_CASE(Decoding)
{
  Block sigInfoBlock(sigInfo, sizeof(sigInfo));
  Block sigValueBlock(sigValue, sizeof(sigValue));

  Signature sig(sigInfoBlock, sigValueBlock);
  BOOST_CHECK_NO_THROW(SignatureSha256WithEcdsa{sig});
  BOOST_CHECK_NO_THROW(sig.getKeyLocator());
}

BOOST_AUTO_TEST_CASE(Encoding)
{
  Name name("/test/key/locator");
  KeyLocator keyLocator(name);

  SignatureSha256WithEcdsa sig(keyLocator);

  BOOST_CHECK_NO_THROW(sig.getKeyLocator());

  const Block& encodeSigInfoBlock = sig.getInfo();

  Block sigInfoBlock(sigInfo, sizeof(sigInfo));

  BOOST_CHECK_EQUAL_COLLECTIONS(sigInfoBlock.wire(),
                                sigInfoBlock.wire() + sigInfoBlock.size(),
                                encodeSigInfoBlock.wire(),
                                encodeSigInfoBlock.wire() + encodeSigInfoBlock.size());

  sig.setKeyLocator(Name("/test/another/key/locator"));

  const Block& encodeSigInfoBlock2 = sig.getInfo();
  BOOST_CHECK_NE(sigInfoBlock, encodeSigInfoBlock2);
}

BOOST_AUTO_TEST_CASE(DataSignature)
{
  Identity identity = m_keyChain.createIdentity("/SecurityTestSignatureSha256WithEcdsa/DataSignature", EcKeyParams());

  Data testData("/SecurityTestSignatureSha256WithEcdsa/DataSignature/Data1");
  char content[5] = "1234";
  testData.setContent(reinterpret_cast<uint8_t*>(content), 5);
  BOOST_CHECK_NO_THROW(m_keyChain.sign(testData, security::SigningInfo(identity)));
  Block dataBlock(testData.wireEncode().wire(), testData.wireEncode().size());

  Data testData2;
  testData2.wireDecode(dataBlock);
  BOOST_CHECK(verifySignature(testData2, identity.getDefaultKey()));
}

BOOST_AUTO_TEST_CASE(InterestSignature)
{
  Identity identity = m_keyChain.createIdentity("/SecurityTestSignatureSha256WithEcdsa/InterestSignature", EcKeyParams());

  auto interest = makeInterest("/SecurityTestSignatureSha256WithEcdsa/InterestSignature/Interest1");
  auto interest11 = makeInterest("/SecurityTestSignatureSha256WithEcdsa/InterestSignature/Interest1");

  scheduler.schedule(100_ms, [&] { m_keyChain.sign(*interest, security::SigningInfo(identity)); });
  advanceClocks(100_ms);
  scheduler.schedule(100_ms, [&] { m_keyChain.sign(*interest11, security::SigningInfo(identity)); });
  advanceClocks(100_ms);

  Block interestBlock(interest->wireEncode().wire(), interest->wireEncode().size());

  Interest interest2;
  interest2.wireDecode(interestBlock);
  BOOST_CHECK(verifySignature(interest2, identity.getDefaultKey()));
}

BOOST_AUTO_TEST_SUITE_END() // TestSignatureSha256WithEcdsa
BOOST_AUTO_TEST_SUITE_END() // Security

} // namespace tests
} // namespace security
} // namespace ndn