Prepare for testbed deployment: name assignment and redirection policy

Change-Id: I7f4da10b763f3891d33820e9c6f4c7cb0eea60ce
diff --git a/src/redirection/redirection-param.cpp b/src/redirection/redirection-param.cpp
new file mode 100644
index 0000000..d74d105
--- /dev/null
+++ b/src/redirection/redirection-param.cpp
@@ -0,0 +1,63 @@
+/* -*- 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.
+ */
+
+#include "redirection-param.hpp"
+#include <boost/algorithm/string.hpp>
+
+namespace ndncert {
+
+NDNCERT_REGISTER_POLICY_FACTORY(RedirectionParam, "param");
+
+RedirectionParam::RedirectionParam(const std::string& format)
+  : RedirectionPolicy(format)
+{
+  if (format.empty()) {
+    return;
+  }
+  std::vector<std::string> strs;
+  boost::split(strs,format,boost::is_any_of("&"));
+  for (const auto& s : strs) {
+    auto i = s.find('=');
+    if (i == std::string::npos) {
+      NDN_THROW(std::runtime_error("Redirection param format: no '=' in format piece"));
+    }
+    m_format.emplace(s.substr(0, i), s.substr(i + 1));
+  }
+}
+
+bool
+RedirectionParam::isRedirecting(const std::multimap<std::string, std::string>& params)
+{
+  for (const auto& p : m_format) {
+    bool found = false;
+    for (auto it = params.find(p.first); it != params.end() && it->first == p.first; it ++) {
+      if (it->second == p.second) {
+        found = true;
+        break;
+      }
+    }
+    if (!found) {
+      return false;
+    }
+  }
+  return true;
+}
+
+} // namespace ndncert