// 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/PacketType.hh"
-#include "Packets/ParseInt.hh"
-#include "Packets/PacketRegistry.hh"
-#include "Packets/PacketParser.hh"
+#include "../../Socket/Protocols/INet/INet4Address.hh"
+#include "../../Packets/Packets.hh"
//#include "IpV4Packet.mpp"
///////////////////////////////hh.p////////////////////////////////////////
namespace senf {
- struct Parse_IpV4 : public PacketParserBase
+ /** \brief Parse in IpV4 address
+
+ \see INet4Address
+ */
+ struct Parse_INet4Address : public PacketParserBase
{
- SENF_PACKET_PARSER_NO_INIT(Parse_IpV4);
+ Parse_INet4Address(data_iterator i, state_type s) : PacketParserBase(i,s,fixed_bytes) {}
///////////////////////////////////////////////////////////////////////////
- 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;
-
- 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 )) );
-
- void init() {
+ 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.
+
+ \see IpV4PacketType \n
+ <a href="http://tools.ietf.org/html/rfc791">RFC 791</a>
+
+ \todo Implement options
+ */
+ struct Parse_IpV4 : public PacketParserBase
+ {
+# 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();
}
};
+ /** \brief IP protocol number registry
+
+ This registeres packets with their IP protocol number.
+
+ \see <a href="http://www.iana.org/assignments/protocol-numbers">Protocol numbers</a> \n
+ PacketRegistry
+ */
struct IpTypes {
- // See http://www.iana.org/assignments/protocol-numbers
- // Also used by IPv6
typedef boost::uint16_t key_t;
};
+ /** \brief IpV4 packet
+
+ <table class="packet" cellpadding="5" cellspacing="1" border="1">
+ <tr>
+ <th width="12%">0</th> <th width="12%">4</th> <th width="12%">8</th>
+ <th width="12%">12</th> <th width="3%">16</th>
+ <th width="3%"></th> <th width="3%"></th> <th width="3%"></th>
+ <th width="12%">20</th> <th width="12%">24</th> <th width="6%">28</th>
+ <th style="text-align:right" width="6%">31</th>
+ </tr><tr>
+ <td>\ref Parse_IpV4::version() "Version"</td>
+ <td>\ref Parse_IpV4::ihl() "IHL"</td>
+ <td colspan="2">\ref Parse_IpV4::tos() "TOS"</td>
+ <td colspan="8">\ref Parse_IpV4::length() "Length"</td>
+ </tr><tr>
+ <td colspan="4">\ref Parse_IpV4::identifier() "Identifier"</td>
+ <td>\ref Parse_IpV4::reserved() "R"</td>
+ <td>\ref Parse_IpV4::df() "DF"</td>
+ <td>\ref Parse_IpV4::mf() "MF"</td>
+ <td colspan="5">\ref Parse_IpV4::frag() "Fragment Offset"</td>
+ </tr><tr>
+ <td colspan="2">\ref Parse_IpV4::ttl() "Time to Live (ttl)"</td>
+ <td colspan="2">\ref Parse_IpV4::protocol() "Protocol"</td>
+ <td colspan="8">\ref Parse_IpV4::checksum() "Header Checksum"</td>
+ </tr><tr>
+ <td colspan="12">\ref Parse_IpV4::source() "Source Address"</td>
+ </tr><tr>
+ <td colspan="12">\ref Parse_IpV4::destination() "Destination Address"</td>
+ </tr>
+ </table>
+
+ \par Packet type (typedef):
+ \ref IpV4Packet
+
+ \par Fields:
+ \ref Parse_IpV4
+
+ \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
: public PacketTypeBase,
public PacketTypeMixin<IpV4PacketType, IpTypes>
{
+#ifndef DOXYGEN
typedef PacketTypeMixin<IpV4PacketType, IpTypes> mixin;
typedef ConcretePacket<IpV4PacketType> packet;
typedef Parse_IpV4 parser;
-
+#endif
using mixin::nextPacketRange;
using mixin::nextPacketType;
using mixin::initSize;
{ return p->protocol(); }
static void dump(packet p, std::ostream & os);
+ static void finalize(packet p);
};
- typedef IpV4PacketType::packet IpV4Packet;
-
+ /** \brief IpV4 packet typedef */
+ typedef ConcretePacket<IpV4PacketType> IpV4Packet;
}
///////////////////////////////hh.e////////////////////////////////////////
+#endif
+#ifndef SENF_PACKETS_DECL_ONLY
//#include IpV4Packet.cci"
//#include "IpV4Packet.ct"
//#include "IpV4Packet.cti"
projects / senf.git / blobdiff