add policy checker
Change-Id: I90c50d15b1d9d97832c66ce90e39524729f12a0f
diff --git a/core/conf/key-locator-checker.hpp b/core/conf/key-locator-checker.hpp
new file mode 100644
index 0000000..921faa2
--- /dev/null
+++ b/core/conf/key-locator-checker.hpp
@@ -0,0 +1,127 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2014, Regents of the University of California
+ *
+ * This file is part of NSL (NDN Signature Logger).
+ * See AUTHORS.md for complete list of NSL authors and contributors.
+ *
+ * NSL is free software: you can redistribute it and/or modify it under the terms
+ * of the GNU General Public License as published by the Free Software Foundation,
+ * either version 3 of the License, or (at your option) any later version.
+ *
+ * NSL 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * NSL, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * See AUTHORS.md for complete list of nsl authors and contributors.
+ */
+
+#ifndef NSL_CONF_KEY_LOCATOR_CHECKER_HPP
+#define NSL_CONF_KEY_LOCATOR_CHECKER_HPP
+
+#include "common.hpp"
+#include "config.hpp"
+#include <ndn-cxx/util/regex.hpp>
+
+namespace nsl {
+namespace conf {
+
+class KeyLocatorCheckerFactory;
+
+/**
+ * @brief KeyLocatorChecker is one of the classes used by ValidatorConfig.
+ *
+ * The ValidatorConfig class consists of a set of rules.
+ * The KeyLocatorChecker class is part of a rule and is used to check if the KeyLocator field of a
+ * packet satisfy the requirements.
+ */
+
+
+class KeyLocatorChecker
+{
+public:
+ enum Relation {
+ RELATION_EQUAL,
+ RELATION_IS_PREFIX_OF,
+ RELATION_IS_STRICT_PREFIX_OF
+ };
+
+ virtual
+ ~KeyLocatorChecker();
+
+ bool
+ check(const Data& data, const KeyLocator& keyLocator, std::string& failInfo);
+
+protected:
+ virtual bool
+ check(const Name& packetName, const KeyLocator& keyLocator, std::string& failInfo) = 0;
+
+ bool
+ checkRelation(const Relation& relation, const Name& name1, const Name& name2);
+};
+
+class RelationKeyLocatorNameChecker : public KeyLocatorChecker
+{
+public:
+ RelationKeyLocatorNameChecker(const Name& name, const KeyLocatorChecker::Relation& relation);
+
+protected:
+ virtual bool
+ check(const Name& packetName, const KeyLocator& keyLocator, std::string& failInfo);
+
+private:
+ Name m_name;
+ KeyLocatorChecker::Relation m_relation;
+};
+
+class RegexKeyLocatorNameChecker : public KeyLocatorChecker
+{
+public:
+ explicit
+ RegexKeyLocatorNameChecker(const ndn::Regex& regex);
+
+protected:
+ virtual bool
+ check(const Name& packetName, const KeyLocator& keyLocator, std::string& failInfo);
+
+private:
+ ndn::Regex m_regex;
+};
+
+class HyperKeyLocatorNameChecker : public KeyLocatorChecker
+{
+public:
+ HyperKeyLocatorNameChecker(const std::string& pExpr, const std::string pExpand,
+ const std::string& kExpr, const std::string kExpand,
+ const Relation& hyperRelation);
+
+protected:
+ virtual bool
+ check(const Name& packetName, const KeyLocator& keyLocator, std::string& failInfo);
+
+private:
+ shared_ptr<ndn::Regex> m_hyperPRegex;
+ shared_ptr<ndn::Regex> m_hyperKRegex;
+ Relation m_hyperRelation;
+};
+
+
+class KeyLocatorCheckerFactory
+{
+public:
+ static shared_ptr<KeyLocatorChecker>
+ create(const ConfigSection& configSection);
+
+private:
+ static shared_ptr<KeyLocatorChecker>
+ createKeyLocatorNameChecker(const ConfigSection& configSection);
+};
+
+
+} // namespace conf
+} // namespace nsl
+
+#endif // NSL_CONF_KEY_LOCATOR_CHECKER_HPP