// Free Software Foundation, Inc.,
// 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+/** \file
+ \brief IpV4Packet public header */
+
#ifndef HH_IpV4Packet_
#define HH_IpV4Packet_ 1
// Custom includes
-#include "Packets/Packets.hh"
+#include "../../Socket/Protocols/INet/INet4Address.hh"
+#include "../../Packets/Packets.hh"
//#include "IpV4Packet.mpp"
///////////////////////////////hh.p////////////////////////////////////////
namespace senf {
+ /** \brief Parse in IpV4 address
+
+ \see INet4Address
+ */
+ struct Parse_INet4Address : public PacketParserBase
+ {
+ Parse_INet4Address(data_iterator i, state_type s) : PacketParserBase(i,s,fixed_bytes) {}
+
+ ///////////////////////////////////////////////////////////////////////////
+
+ typedef INet4Address value_type;
+ static const size_type fixed_bytes = 4u;
+
+ value_type value() const { return value_type::from_data(i()); }
+ void value(value_type const & v) { std::copy(v.begin(), v.end(), i()); }
+ operator value_type() { return value(); }
+ byte & operator[](size_type index) { return *boost::next(i(),index); }
+ Parse_INet4Address const & operator= (value_type const & other)
+ { value(other); return *this; }
+ };
+
/** \brief Parse an IpV4 packet
Parser implementing the IpV4 header. The fields implemented are:
*/
struct Parse_IpV4 : public PacketParserBase
{
- typedef Parse_UIntField < 0, 4 > Parse_Version;
- typedef Parse_UIntField < 4, 8 > Parse_IHL;
- typedef Parse_UInt8 Parse_8bit;
- typedef Parse_UInt16 Parse_16bit;
- typedef Parse_Flag < 0 > Parse_R;
- typedef Parse_Flag < 1 > Parse_DF;
- typedef Parse_Flag < 2 > Parse_MF;
- typedef Parse_UIntField < 3, 16 > Parse_Frag;
- typedef Parse_UInt32 Parse_32bit;
-
-# ifndef DOXYGEN
-
- SENF_PACKET_PARSER_NO_INIT(Parse_IpV4);
-
- SENF_PACKET_PARSER_DEFINE_FIXED_FIELDS(
- ((OverlayField)( version, Parse_Version ))
- ((Field )( ihl, Parse_IHL ))
- ((Field )( tos, Parse_8bit ))
- ((Field )( length, Parse_16bit ))
- ((Field )( identifier, Parse_16bit ))
- ((OverlayField)( reserved, Parse_R ))
- ((OverlayField)( df, Parse_DF ))
- ((OverlayField)( mf, Parse_MF ))
- ((Field )( frag, Parse_Frag ))
- ((Field )( ttl, Parse_8bit ))
- ((Field )( protocol, Parse_8bit ))
- ((Field )( crc, Parse_16bit ))
- ((Field )( source, Parse_32bit ))
- ((Field )( destination, Parse_32bit )) );
-
-# else
-
- Parse_Version version();
- Parse_IHL ihl();
- Parse_8bit tos();
- Parse_16bit length();
- Parse_16bit identifier();
- Parse_R reserved();
- Parse_DF df();
- Parse_MF mf();
- Parse_Frag frag();
- Parse_8bit ttl();
- Parse_8bit protocol();
- Parse_16bit crc();
- Parse_32bit source();
- Parse_32bit destination();
-
-# endif
-
- void init() {
+# include SENF_FIXED_PARSER()
+
+ SENF_PARSER_BITFIELD( version, 4, unsigned );
+ SENF_PARSER_BITFIELD( ihl, 4, unsigned );
+
+ SENF_PARSER_FIELD( tos, Parse_UInt8 );
+ SENF_PARSER_FIELD( length, Parse_UInt16 );
+ SENF_PARSER_FIELD( identifier, Parse_UInt16 );
+
+ SENF_PARSER_BITFIELD( reserved, 1, bool );
+ SENF_PARSER_BITFIELD( df, 1, bool );
+ SENF_PARSER_BITFIELD( mf, 1, bool );
+ SENF_PARSER_BITFIELD( frag, 13, unsigned );
+
+ SENF_PARSER_FIELD( ttl, Parse_UInt8 );
+ SENF_PARSER_FIELD( protocol, Parse_UInt8 );
+ SENF_PARSER_FIELD( checksum, Parse_UInt16 );
+ SENF_PARSER_FIELD( source, Parse_INet4Address );
+ SENF_PARSER_FIELD( destination, Parse_INet4Address );
+
+ SENF_PARSER_INIT() {
version() = 4;
+ // We don't support option headers at the moment ...
+ ihl() = 5;
+ }
+
+ SENF_PARSER_FINALIZE(Parse_IpV4);
+
+ boost::uint16_t calcChecksum() const;
+
+ bool validateChecksum() const {
+ return checksum() == calcChecksum();
}
};
This registeres packets with their IP protocol number.
- \see <a href="http://www.iana.org/assignments/protocol-numbers">Protocol numbers</a>
+ \see <a href="http://www.iana.org/assignments/protocol-numbers">Protocol numbers</a> \n
PacketRegistry
*/
struct IpTypes {
\par Associated registries:
\ref IpTypes
+ \par Finalize action:
+ Set \a length from payload size\n
+ Set \a protocol from type of next packet if found in \ref IpTypes\n
+ Calculate \a checksum
+
\ingroup protocolbundle_default
*/
struct IpV4PacketType
{ return p->protocol(); }
static void dump(packet p, std::ostream & os);
+ static void finalize(packet p);
};
/** \brief IpV4 packet typedef */