/**
 * Copyright (C) 2013 Regents of the University of California.
 * @author: Yingdi Yu <yingdi0@cs.ucla.edu>
 * See COPYING for copyright and distribution information.
 */

#include <boost/test/unit_test.hpp>

#include "security/key-chain.hpp"
#include "security/validator.hpp"

#include "helpers/command-interest-generator.hpp"
#include "helpers/command-interest-validator.hpp"

using namespace std;
namespace ndn {

BOOST_AUTO_TEST_SUITE(TestSignedInterest)

BOOST_AUTO_TEST_CASE (SignedInterest)
{
  KeyChainImpl<SecPublicInfoSqlite3, SecTpmFile> keyChain;

  Name identityName("/TestSignedInterest/SignVerify/" + boost::lexical_cast<string>(time::now()));
  Name certificateName;
  BOOST_REQUIRE_NO_THROW(certificateName = keyChain.createIdentity(identityName));

  Interest interest("/TestSignedInterest/SignVerify/Interest1");
  BOOST_CHECK_NO_THROW(keyChain.signByIdentity(interest, identityName));
  
  Block interestBlock(interest.wireEncode().wire(), interest.wireEncode().size());

  Interest interest2;
  interest2.wireDecode(interestBlock);
  
  shared_ptr<PublicKey> publicKey;
  BOOST_REQUIRE_NO_THROW(publicKey = keyChain.getPublicKeyFromTpm(keyChain.getDefaultKeyNameForIdentity(identityName)));
  bool result = Validator::verifySignature(interest2, *publicKey);
  
  BOOST_CHECK_EQUAL(result, true);

  keyChain.deleteIdentity(identityName);
}

class CommandInterestFixture
{
public:
  CommandInterestFixture()
    : m_validity(false)
  {}
  
  void
  validated(const shared_ptr<const Interest>& interest)
  { m_validity = true; }

  void
  validationFailed(const shared_ptr<const Interest>& interest, const string& failureInfo)
  {
    m_validity = false; 
  }

  void
  reset()
  { m_validity = false; }

  bool m_validity;
}; 

BOOST_FIXTURE_TEST_CASE (CommandInterest, CommandInterestFixture)
{
  KeyChain keyChain;
  Name identity("/TestCommandInterest/Validation/" + boost::lexical_cast<string>(time::now()));
  Name certName;
  BOOST_REQUIRE_NO_THROW(certName = keyChain.createIdentity(identity));

  CommandInterestGenerator generator;
  CommandInterestValidator validator;

  validator.addInterestRule("^<TestCommandInterest><Validation>", *keyChain.getCertificate(certName));

  //Test a legitimate command
  shared_ptr<Interest> commandInterest1 = make_shared<Interest>("/TestCommandInterest/Validation/Command1");
  generator.generateWithIdentity(*commandInterest1, identity);
  validator.validate(*commandInterest1,
  		     bind(&CommandInterestFixture::validated, this, _1),
  		     bind(&CommandInterestFixture::validationFailed, this, _1, _2));
  
  BOOST_CHECK_EQUAL(m_validity, true);
  
  //Test an outdated command
  reset();
  shared_ptr<Interest> commandInterest2 = make_shared<Interest>("/TestCommandInterest/Validation/Command2");
  int64_t timestamp = time::now() / 1000000;
  timestamp -= 5000;
  Name commandName = commandInterest2->getName();
  commandName
    .append(name::Component::fromNumber(timestamp))
    .append(name::Component::fromNumber(random::generateWord64()));
  commandInterest2->setName(commandName);
  
  keyChain.signByIdentity(*commandInterest2, identity);
  validator.validate(*commandInterest2,
  		     bind(&CommandInterestFixture::validated, this, _1),
  		     bind(&CommandInterestFixture::validationFailed, this, _1, _2));
  
  BOOST_CHECK_EQUAL(m_validity, false);
  
  //Test an unauthorized command
  Name identity2("/TestCommandInterest/Validation2");
  Name certName2;
  BOOST_REQUIRE_NO_THROW(certName2 = keyChain.createIdentity(identity2));
  
  shared_ptr<Interest> commandInterest3 = make_shared<Interest>("/TestCommandInterest/Validation/Command3");
  generator.generateWithIdentity(*commandInterest3, identity2);
  validator.validate(*commandInterest3,
  		     bind(&CommandInterestFixture::validated, this, _1),
  		     bind(&CommandInterestFixture::validationFailed, this, _1, _2));
  
  BOOST_CHECK_EQUAL(m_validity, false);

  //Test another unauthorized command
  shared_ptr<Interest> commandInterest4 = make_shared<Interest>("/TestCommandInterest/Validation2/Command");
  generator.generateWithIdentity(*commandInterest4, identity);
  validator.validate(*commandInterest4,
  		     bind(&CommandInterestFixture::validated, this, _1),
  		     bind(&CommandInterestFixture::validationFailed, this, _1, _2));
  
  BOOST_CHECK_EQUAL(m_validity, false);

  BOOST_CHECK_NO_THROW(keyChain.deleteIdentity(identity));
  BOOST_CHECK_NO_THROW(keyChain.deleteIdentity(identity2));
}


BOOST_AUTO_TEST_SUITE_END()

} // namespace ndn