Prepare for testbed deployment: name assignment and redirection policy

Change-Id: I7f4da10b763f3891d33820e9c6f4c7cb0eea60ce
diff --git a/src/redirection/redirection-policy.hpp b/src/redirection/redirection-policy.hpp
new file mode 100644
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+++ b/src/redirection/redirection-policy.hpp
@@ -0,0 +1,81 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2017-2022, Regents of the University of California.
+ *
+ * This file is part of ndncert, a certificate management system based on NDN.
+ *
+ * ndncert 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.
+ *
+ * ndncert 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 copies of the GNU General Public License along with
+ * ndncert, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * See AUTHORS.md for complete list of ndncert authors and contributors.
+ */
+
+#ifndef NDNCERT_REDIRECTION_POLICY_HPP
+#define NDNCERT_REDIRECTION_POLICY_HPP
+
+#include "detail/ca-request-state.hpp"
+
+#include <map>
+
+namespace ndncert {
+
+class RedirectionPolicy : boost::noncopyable
+{
+protected:
+  explicit RedirectionPolicy(const std::string& format = "") {}
+
+public:
+  virtual ~RedirectionPolicy() = default;
+
+  /**
+   * @brief The Redirection Policy provided by the CA operator to decide if redirection is suitable.
+   *
+   *
+   * @param vector A list of parameter key-value pair from probe.
+   * @return a boolean that is true if the provided params conform to the configured redirection policy.
+   */
+  virtual bool
+  isRedirecting(const std::multimap<std::string, std::string>& params) = 0;
+
+public:
+  template <class PolicyType>
+  static void
+  registerRedirectionPolicy(const std::string& typeName)
+  {
+    PolicyFactory& factory = getFactory();
+    BOOST_ASSERT(factory.count(typeName) == 0);
+    factory[typeName] = [](const std::string& format) { return std::make_unique<PolicyType>(format); };
+  }
+
+  static std::unique_ptr<RedirectionPolicy>
+  createPolicyFunc(const std::string& policyType, const std::string& format = "");
+
+private:
+  typedef std::function<std::unique_ptr<RedirectionPolicy>(const std::string&)> FactoryCreateFunc;
+  typedef std::map<std::string, FactoryCreateFunc> PolicyFactory;
+
+  static PolicyFactory&
+  getFactory();
+};
+
+#define NDNCERT_REGISTER_POLICY_FACTORY(C, T)                                  \
+  static class NdnCert##C##PolicyFactoryRegistrationClass                      \
+  {                                                                               \
+  public:                                                                         \
+    NdnCert##C##PolicyFactoryRegistrationClass()                               \
+    {                                                                             \
+      ::ndncert::RedirectionPolicy::registerRedirectionPolicy<C>(T);        \
+    }                                                                             \
+  } g_NdnCert##C##RedirectionPolicyRegistrationVariable
+
+} // namespace ndncert
+
+#endif // NDNCERT_REDIRECTION_POLICY_HPP