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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
* Copyright (c) 2013-2014 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.
*
* @author Yingdi Yu <http://irl.cs.ucla.edu/~yingdi/>
*/
#ifndef NDN_SECURITY_CERTIFICATE_CACHE_TTL_HPP
#define NDN_SECURITY_CERTIFICATE_CACHE_TTL_HPP
#include "../common.hpp"
#include "certificate-cache.hpp"
#include "../util/scheduler.hpp"
namespace ndn {
class CertificateCacheTtl : public CertificateCache
{
public:
explicit
CertificateCacheTtl(boost::asio::io_service& io,
const time::seconds& defaultTtl = time::seconds(3600))
: m_defaultTtl(defaultTtl)
, m_scheduler(io)
{
}
virtual
~CertificateCacheTtl()
{
}
virtual inline void
insertCertificate(shared_ptr<const IdentityCertificate> certificate);
virtual inline shared_ptr<const IdentityCertificate>
getCertificate(const Name& certificateNameWithoutVersion);
virtual inline void
reset();
virtual inline size_t
getSize();
private:
inline void
insert(shared_ptr<const IdentityCertificate> certificate);
inline void
remove(const Name& certificateName);
inline void
removeAll();
protected:
typedef std::map<Name, std::pair<shared_ptr<const IdentityCertificate>, EventId> > Cache;
time::seconds m_defaultTtl;
Cache m_cache;
Scheduler m_scheduler;
};
inline void
CertificateCacheTtl::insertCertificate(shared_ptr<const IdentityCertificate> certificate)
{
m_scheduler.scheduleEvent(time::seconds(0),
bind(&CertificateCacheTtl::insert, this, certificate));
}
inline shared_ptr<const IdentityCertificate>
CertificateCacheTtl::getCertificate(const Name& certificateName)
{
Cache::iterator it = m_cache.find(certificateName);
if (it != m_cache.end())
return it->second.first;
else
return shared_ptr<IdentityCertificate>();
}
inline void
CertificateCacheTtl::reset()
{
m_scheduler.scheduleEvent(time::seconds(0),
bind(&CertificateCacheTtl::removeAll, this));
}
inline size_t
CertificateCacheTtl::getSize()
{
return m_cache.size();
}
inline void
CertificateCacheTtl::insert(shared_ptr<const IdentityCertificate> certificate)
{
time::milliseconds expire = (certificate->getFreshnessPeriod() >= time::seconds::zero() ?
certificate->getFreshnessPeriod() : m_defaultTtl);
Name index = certificate->getName().getPrefix(-1);
Cache::iterator it = m_cache.find(index);
if (it != m_cache.end())
m_scheduler.cancelEvent(it->second.second);
EventId eventId = m_scheduler.scheduleEvent(expire,
bind(&CertificateCacheTtl::remove,
this, certificate->getName()));
m_cache[index] = std::make_pair(certificate, eventId);
}
inline void
CertificateCacheTtl::remove(const Name& certificateName)
{
Name name = certificateName.getPrefix(-1);
Cache::iterator it = m_cache.find(name);
if (it != m_cache.end())
m_cache.erase(it);
}
inline void
CertificateCacheTtl::removeAll()
{
for(Cache::iterator it = m_cache.begin(); it != m_cache.end(); it++)
m_scheduler.cancelEvent(it->second.second);
m_cache.clear();
}
} // namespace ndn
#endif //NDN_SECURITY_CERTIFICATE_CACHE_TTL_HPP