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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
* Copyright (c) 2013-2018 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 "validity-period.hpp"
#include "../encoding/block-helpers.hpp"
#include "../util/concepts.hpp"
namespace ndn {
namespace security {
BOOST_CONCEPT_ASSERT((boost::EqualityComparable<ValidityPeriod>));
BOOST_CONCEPT_ASSERT((WireEncodable<ValidityPeriod>));
BOOST_CONCEPT_ASSERT((WireEncodableWithEncodingBuffer<ValidityPeriod>));
BOOST_CONCEPT_ASSERT((WireDecodable<ValidityPeriod>));
static_assert(std::is_base_of<tlv::Error, ValidityPeriod::Error>::value,
"ValidityPeriod::Error must inherit from tlv::Error");
static const size_t ISO_DATETIME_SIZE = 15;
static const size_t NOT_BEFORE_OFFSET = 0;
static const size_t NOT_AFTER_OFFSET = 1;
using boost::chrono::time_point_cast;
ValidityPeriod::ValidityPeriod()
: ValidityPeriod(time::system_clock::TimePoint() + 1_ns,
time::system_clock::TimePoint())
{
}
ValidityPeriod::ValidityPeriod(const time::system_clock::TimePoint& notBefore,
const time::system_clock::TimePoint& notAfter)
: m_notBefore(time_point_cast<TimePoint::duration>(notBefore + TimePoint::duration(1) -
time::system_clock::TimePoint::duration(1)))
, m_notAfter(time_point_cast<TimePoint::duration>(notAfter))
{
}
ValidityPeriod::ValidityPeriod(const Block& block)
{
wireDecode(block);
}
template<encoding::Tag TAG>
size_t
ValidityPeriod::wireEncode(EncodingImpl<TAG>& encoder) const
{
size_t totalLength = 0;
totalLength += prependStringBlock(encoder, tlv::NotAfter, time::toIsoString(m_notAfter));
totalLength += prependStringBlock(encoder, tlv::NotBefore, time::toIsoString(m_notBefore));
totalLength += encoder.prependVarNumber(totalLength);
totalLength += encoder.prependVarNumber(tlv::ValidityPeriod);
return totalLength;
}
NDN_CXX_DEFINE_WIRE_ENCODE_INSTANTIATIONS(ValidityPeriod);
const Block&
ValidityPeriod::wireEncode() const
{
if (m_wire.hasWire())
return m_wire;
EncodingEstimator estimator;
size_t estimatedSize = wireEncode(estimator);
EncodingBuffer buffer(estimatedSize, 0);
wireEncode(buffer);
m_wire = buffer.block();
m_wire.parse();
return m_wire;
}
void
ValidityPeriod::wireDecode(const Block& wire)
{
if (!wire.hasWire()) {
BOOST_THROW_EXCEPTION(Error("The supplied block does not contain wire format"));
}
m_wire = wire;
m_wire.parse();
if (m_wire.type() != tlv::ValidityPeriod)
BOOST_THROW_EXCEPTION(Error("Unexpected TLV type when decoding ValidityPeriod"));
if (m_wire.elements_size() != 2)
BOOST_THROW_EXCEPTION(Error("Does not have two sub-TLVs"));
if (m_wire.elements()[NOT_BEFORE_OFFSET].type() != tlv::NotBefore ||
m_wire.elements()[NOT_BEFORE_OFFSET].value_size() != ISO_DATETIME_SIZE ||
m_wire.elements()[NOT_AFTER_OFFSET].type() != tlv::NotAfter ||
m_wire.elements()[NOT_AFTER_OFFSET].value_size() != ISO_DATETIME_SIZE) {
BOOST_THROW_EXCEPTION(Error("Invalid NotBefore or NotAfter field"));
}
try {
m_notBefore = time_point_cast<TimePoint::duration>(
time::fromIsoString(readString(m_wire.elements()[NOT_BEFORE_OFFSET])));
m_notAfter = time_point_cast<TimePoint::duration>(
time::fromIsoString(readString(m_wire.elements()[NOT_AFTER_OFFSET])));
}
catch (const std::bad_cast&) {
BOOST_THROW_EXCEPTION(Error("Invalid date format in NOT-BEFORE or NOT-AFTER field"));
}
}
ValidityPeriod&
ValidityPeriod::setPeriod(const time::system_clock::TimePoint& notBefore,
const time::system_clock::TimePoint& notAfter)
{
m_wire.reset();
m_notBefore = time_point_cast<TimePoint::duration>(notBefore + TimePoint::duration(1) -
time::system_clock::TimePoint::duration(1));
m_notAfter = time_point_cast<TimePoint::duration>(notAfter);
return *this;
}
std::pair<time::system_clock::TimePoint, time::system_clock::TimePoint>
ValidityPeriod::getPeriod() const
{
return std::make_pair(m_notBefore, m_notAfter);
}
bool
ValidityPeriod::isValid(const time::system_clock::TimePoint& now) const
{
return m_notBefore <= now && now <= m_notAfter;
}
bool
ValidityPeriod::operator==(const ValidityPeriod& other) const
{
return (this->m_notBefore == other.m_notBefore &&
this->m_notAfter == other.m_notAfter);
}
bool
ValidityPeriod::operator!=(const ValidityPeriod& other) const
{
return !(*this == other);
}
std::ostream&
operator<<(std::ostream& os, const ValidityPeriod& period)
{
os << "(" << time::toIsoString(period.getPeriod().first)
<< ", " << time::toIsoString(period.getPeriod().second) << ")";
return os;
}
} // namespace security
} // namespace ndn