security: Convert ValidatorConfig to ValidationPolicyConfig

The security API also provides a convenience ValidatorConfig helper.

Change-Id: Ic86dec4904b917361cb4740204de4b6710d2a386
Refs: #3920
diff --git a/src/security/v2/validator-config/rule.hpp b/src/security/v2/validator-config/rule.hpp
new file mode 100644
index 0000000..66d6d6a
--- /dev/null
+++ b/src/security/v2/validator-config/rule.hpp
@@ -0,0 +1,113 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2013-2017 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.
+ */
+
+#ifndef NDN_SECURITY_V2_VALIDATOR_CONFIG_RULE_HPP
+#define NDN_SECURITY_V2_VALIDATOR_CONFIG_RULE_HPP
+
+#include "filter.hpp"
+#include "checker.hpp"
+
+namespace ndn {
+namespace security {
+namespace v2 {
+
+class ValidationState;
+
+namespace validator_config {
+
+class Rule : noncopyable
+{
+public:
+  Rule(const std::string& id, uint32_t pktType);
+
+  const std::string&
+  getId() const
+  {
+    return m_id;
+  }
+
+  uint32_t
+  getPktType() const
+  {
+    return m_pktType;
+  }
+
+  void
+  addFilter(unique_ptr<Filter> filter);
+
+  void
+  addChecker(unique_ptr<Checker> checker);
+
+  /**
+   * @brief check if the packet name matches rule's filter
+   *
+   * If no filters were added, the rule matches everything.
+   *
+   * @param pktType tlv::Interest or tlv::Data
+   * @param pktName packet name, for signed Interests the last two components are not removed
+   * @retval true  If at least one filter matches @p pktName
+   * @retval false If none of the filters match @p pktName
+   *
+   * @throw Error the supplied pktType doesn't match one for which the rule is designed
+   */
+  bool
+  match(uint32_t pktType, const Name& pktName) const;
+
+  /**
+   * @brief check if packet satisfies rule's condition
+   *
+   * @param pktType tlv::Interest or tlv::Data
+   * @param pktName packet name, for signed Interests the last two components are not removed
+   * @param klName KeyLocator name
+   * @param state Validation state
+   *
+   * @retval false packet violates at least one checker. Will call state::fail() with proper code and message.
+   * @retval true  packet satisfies all checkers, further validation is needed
+   *
+   * @throw Error the supplied pktType doesn't match one for which the rule is designed
+   */
+  bool
+  check(uint32_t pktType, const Name& pktName, const Name& klName, const shared_ptr<ValidationState>& state) const;
+
+public:
+  /**
+   * @brief create a rule from configuration section
+   *
+   * @param configSection The section containing the definition of checker.
+   * @param configFilename The configuration file name.
+   * @return a rule created from configuration
+   */
+  static unique_ptr<Rule>
+  create(const ConfigSection& configSection, const std::string& configFilename);
+
+NDN_CXX_PUBLIC_WITH_TESTS_ELSE_PRIVATE:
+  std::string m_id;
+  uint32_t m_pktType;
+  std::vector<unique_ptr<Filter>> m_filters;
+  std::vector<unique_ptr<Checker>> m_checkers;
+};
+
+} // namespace validator_config
+} // namespace v2
+} // namespace security
+} // namespace ndn
+
+#endif // NDN_SECURITY_V2_VALIDATOR_CONFIG_RULE_HPP