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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/>
*/
#include "common.hpp"
#include "sec-rule-relative.hpp"
#include "signature-sha256-with-rsa.hpp"
#include "security-common.hpp"
namespace ndn {
using std::string;
SecRuleRelative::SecRuleRelative(const string& dataRegex, const string& signerRegex,
const string& op,
const string& dataExpand, const string& signerExpand,
bool isPositive)
: SecRule(isPositive),
m_dataRegex(dataRegex),
m_signerRegex(signerRegex),
m_op(op),
m_dataExpand(dataExpand),
m_signerExpand(signerExpand),
m_dataNameRegex(dataRegex, dataExpand),
m_signerNameRegex(signerRegex, signerExpand)
{
if (op != ">" && op != ">=" && op != "==")
throw Error("op is wrong!");
}
SecRuleRelative::~SecRuleRelative()
{
}
bool
SecRuleRelative::satisfy(const Data& data)
{
Name dataName = data.getName();
try
{
if (!data.getSignature().hasKeyLocator())
return false;
const KeyLocator& keyLocator = data.getSignature().getKeyLocator();
if (keyLocator.getType() != KeyLocator::KeyLocator_Name)
return false;
const Name& signerName = keyLocator.getName();
return satisfy(dataName, signerName);
}
catch (tlv::Error& e)
{
return false;
}
catch (RegexMatcher::Error& e)
{
return false;
}
}
bool
SecRuleRelative::satisfy(const Name& dataName, const Name& signerName)
{
if (!m_dataNameRegex.match(dataName))
return false;
Name expandDataName = m_dataNameRegex.expand();
if (!m_signerNameRegex.match(signerName))
return false;
Name expandSignerName = m_signerNameRegex.expand();
bool matched = compare(expandDataName, expandSignerName);
return matched;
}
bool
SecRuleRelative::matchDataName(const Data& data)
{
return m_dataNameRegex.match(data.getName());
}
bool
SecRuleRelative::matchSignerName(const Data& data)
{
try
{
if (!data.getSignature().hasKeyLocator())
return false;
const KeyLocator& keyLocator = data.getSignature().getKeyLocator();
if (keyLocator.getType() != KeyLocator::KeyLocator_Name)
return false;
const Name& signerName = keyLocator.getName();
return m_signerNameRegex.match(signerName);
}
catch (tlv::Error& e)
{
return false;
}
catch (RegexMatcher::Error& e)
{
return false;
}
}
bool
SecRuleRelative::compare(const Name& dataName, const Name& signerName)
{
if ((dataName == signerName) && ("==" == m_op || ">=" == m_op))
return true;
Name::const_iterator i = dataName.begin();
Name::const_iterator j = signerName.begin();
for (; i != dataName.end() && j != signerName.end(); i++, j++)
{
if (i->compare(*j) == 0)
continue;
else
return false;
}
if (i == dataName.end())
return false;
else
return true;
}
} // namespace ndn