[fd4o6] Added DHCPv4-over-DHCPv6 packet class

src/lib/dhcp/Makefile.am

@@ -15,7 +15,7 @@ CLEANFILES = *.gcno *.gcda
 lib_LTLIBRARIES = libkea-dhcp++.la
 libkea_dhcp___la_SOURCES  =
 libkea_dhcp___la_SOURCES += classify.cc classify.h
-libkea_dhcp___la_SOURCES += dhcp6.h dhcp4.h
+libkea_dhcp___la_SOURCES += dhcp6.h dhcp4.h dhcp4o6.h
 libkea_dhcp___la_SOURCES += duid.cc duid.h
 libkea_dhcp___la_SOURCES += hwaddr.cc hwaddr.h
 libkea_dhcp___la_SOURCES += iface_mgr.cc iface_mgr.h
@@ -48,6 +48,7 @@ libkea_dhcp___la_SOURCES += protocol_util.cc protocol_util.h
 libkea_dhcp___la_SOURCES += pkt.cc pkt.h
 libkea_dhcp___la_SOURCES += pkt6.cc pkt6.h
 libkea_dhcp___la_SOURCES += pkt4.cc pkt4.h
+libkea_dhcp___la_SOURCES += pkt4o6.cc pkt4o6.h
 libkea_dhcp___la_SOURCES += pkt_filter.h pkt_filter.cc
 libkea_dhcp___la_SOURCES += pkt_filter6.h pkt_filter6.cc
 libkea_dhcp___la_SOURCES += pkt_filter_inet.cc pkt_filter_inet.h

src/lib/dhcp/pkt4o6.cc

+// Copyright (C) 2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+#include <config.h>
+#include <asiolink/io_address.h>
+#include <dhcp/dhcp4.h>
+#include <dhcp/libdhcp++.h>
+#include <dhcp/option_int.h>
+#include <dhcp/pkt4o6.h>
+#include <exceptions/exceptions.h>
+
+#include <algorithm>
+#include <iostream>
+#include <sstream>
+
+using namespace std;
+using namespace isc::dhcp;
+using namespace isc::asiolink;
+
+namespace {
+
+/// @brief Default address used in Pkt4 constructor
+const IOAddress DEFAULT_ADDRESS("0.0.0.0");
+}
+
+namespace isc {
+namespace dhcp {
+
+Pkt4o6::Pkt4o6(const uint8_t* data, size_t len, const Pkt6Ptr& pkt6)
+    :Pkt4(data, len), pkt6_(pkt6)
+{
+    setIface(pkt6->getIface());
+    setIndex(pkt6->getIndex());
+    setRemoteAddr(pkt6->getRemoteAddr());
+}
+
+} // end of namespace isc::dhcp
+
+} // end of namespace isc

src/lib/dhcp/pkt4o6.h

+// Copyright (C) 2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+#ifndef PKT4O6_H
+#define PKT4O6_H
+
+#include <dhcp/pkt4.h>
+#include <dhcp/pkt6.h>
+
+#include <boost/shared_ptr.hpp>
+
+namespace isc {
+
+namespace dhcp {
+
+/// @brief Represents DHCPv4-over-DHCPv6 packet
+///
+/// This class derives from @c Pkt4 in order to be handled by
+/// the DHCPv4 server code. It includes a shared pointer to the
+/// DHCPv6 message too.
+class Pkt4o6 : public Pkt4 {
+public:
+
+    /// @brief Constructor, used in message reception.
+    ///
+    /// @param data pointer to received data
+    /// @param len size of buffer to be allocated for this packet
+    /// @param pkt6 encapsulating DHCPv6 message.
+    Pkt4o6(const uint8_t* data, size_t len, const Pkt6Ptr& pkt6);
+
+    /// @brief Returns encapsulating DHCPv6 message
+    const Pkt6Ptr& getPkt6() { return (pkt6_); }
+
+protected:
+    /// Encapsulating DHCPv6 message
+    const Pkt6Ptr& pkt6_;
+
+}; // Pkt4o6 class
+
+/// @brief A pointer to Pkt4o6 object.
+typedef boost::shared_ptr<Pkt4o6> Pkt4o6Ptr;
+
+} // isc::dhcp namespace
+
+} // isc namespace
+
+#endif