tools: Add security tools; Add waf build options for tools.

Change-Id: I058510acc1a0361fed43d94c7a0b545416a9efb4
diff --git a/tools/ndnsec-operator-tool.cpp b/tools/ndnsec-operator-tool.cpp
new file mode 100644
index 0000000..942570e
--- /dev/null
+++ b/tools/ndnsec-operator-tool.cpp
@@ -0,0 +1,98 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
+/*
+ * Copyright (c) 2013, Regents of the University of California
+ *                     Yingdi Yu
+ *
+ * BSD license, See the LICENSE file for more information
+ *
+ * Author: Yingdi Yu <yingdi@cs.ucla.edu>
+ */
+
+#include <iostream>
+#include <fstream>
+
+#include <boost/program_options/options_description.hpp>
+#include <boost/program_options/variables_map.hpp>
+#include <boost/program_options/parsers.hpp>
+#include <boost/date_time/posix_time/posix_time.hpp>
+#include <boost/regex.hpp>
+#include <boost/exception/all.hpp>
+
+#include "security/key-chain.hpp"
+#include "security/signature-sha256-with-rsa.hpp"
+
+using namespace std;
+using namespace ndn;
+namespace po = boost::program_options;
+
+int main(int argc, char** argv)
+{
+  string command;
+  
+  po::options_description desc("General options");
+  desc.add_options()
+    ("help,h", "produce this help message")
+    ("command", po::value<string>(&command), "command")
+    ;
+
+  po::positional_options_description p;
+  p.add("command", 1);
+  
+  po::variables_map vm;
+  try
+    {
+      po::store(po::command_line_parser(argc, argv).options(desc).positional(p).run(), vm);
+      po::notify(vm);
+    }
+  catch(std::exception &e)
+    {
+      cerr << "ERROR: " << e.what() << endl;
+      return -1;
+    }
+    
+  if (vm.count("help"))
+    {
+      cout << desc << "\n";
+      return 1;
+    }
+  
+  if (0 == vm.count("command"))
+    {
+      cerr << "command must be specified" << endl;
+      cerr << desc << endl;
+      return 1;
+    }
+
+  if (command == "sign") // the content to be signed from stdin
+    {
+      KeyChain keyChain;
+
+      try
+        {
+          Buffer dataToSign((istreambuf_iterator<char>(cin)), istreambuf_iterator<char>());
+          
+          Signature signature = keyChain.sign(dataToSign.buf(), dataToSign.size(),
+                                              keyChain.getDefaultCertificateName());
+
+          if (signature.getValue().value_size() == 0)
+            {
+              cerr << "Error signing with default key" << endl;
+              return -1;
+            }
+
+          cout.write(reinterpret_cast<const char*>(signature.getValue().wire()), signature.getValue().size());
+        }
+      catch (boost::exception &e)
+        {
+          std::cerr << "ERROR: " << boost::diagnostic_information (e) << std::endl;
+          return -1;
+        }
+      catch(std::exception &e)
+        {
+          cerr << "ERROR: " << e.what() << endl;
+          return -1;
+        }
+    }
+
+  return 0;
+}