Packets/80221Bundle/TLVPacket.hh

   1 // $Id$
   2 //
   3 // Copyright (C) 2007
   4 // Fraunhofer Institute for Open Communication Systems (FOKUS)
   5 // Competence Center NETwork research (NET), St. Augustin, GERMANY
   6 //     Thorsten Horstmann <tho@berlios.de>
   7 //
   8 // This program is free software; you can redistribute it and/or modify
   9 // it under the terms of the GNU General Public License as published by
  10 // the Free Software Foundation; either version 2 of the License, or
  11 // (at your option) any later version.
  12 //
  13 // This program is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17 //
  18 // You should have received a copy of the GNU General Public License
  19 // along with this program; if not, write to the
  20 // Free Software Foundation, Inc.,
  21 // 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  22
  23 /** \file
  24     \brief TLVPacket public header */
  25
  26 #ifndef HH_SENF_Packets_80221Bundle_TLVPacket_
  27 #define HH_SENF_Packets_80221Bundle_TLVPacket_ 1
  28
  29 // Custom includes
  30 #include <algorithm>
  31 #include "../../Packets/Packets.hh"
  32
  33 //#include "TLVPacket.mpp"
  34 ///////////////////////////////hh.p////////////////////////////////////////
  35
  36 namespace senf {
  37
  38
  39     struct TLVLengthException : public senf::Exception
  40     { TLVLengthException()
  41           : senf::Exception("TLVLengthException"){} };
  42
  43
  44     class DynamicTLVLengthParser
  45         : public detail::packet::IntParserOps<DynamicTLVLengthParser, boost::uint32_t>,
  46           public PacketParserBase
  47     {
  48     public:
  49         DynamicTLVLengthParser(data_iterator i, state_type s) : PacketParserBase(i,s) {}
  50
  51         typedef boost::uint32_t value_type;
  52         static const size_type init_bytes = 1;
  53         static value_type const min_value = 0;
  54         static value_type const max_value = 4294967295u;
  55
  56         value_type value() const;
  57         void value(value_type const & v);
  58
  59         DynamicTLVLengthParser const & operator= (value_type other);
  60         size_type bytes() const;
  61         void init() const;
  62
  63 #       include SENF_PARSER()
  64         SENF_PARSER_PRIVATE_BITFIELD ( extended_length_flag, 1,  bool     );
  65         SENF_PARSER_PRIVATE_BITFIELD ( fixed_length_field,   7,  unsigned );
  66
  67         void shrink();
  68         void maxValue(DynamicTLVLengthParser::value_type v);
  69     private:
  70         void resize(size_type size);
  71     };
  72
  73
  74     class BaseTLVPacketParser : public PacketParserBase
  75     {
  76 #       include SENF_PARSER()
  77         SENF_PARSER_FIELD    ( type,   UInt8Parser            );
  78         SENF_PARSER_FIELD_RO ( length, DynamicTLVLengthParser );
  79         SENF_PARSER_FINALIZE ( BaseTLVPacketParser            );
  80
  81         void maxLengthValue(DynamicTLVLengthParser::value_type v) const {
  82             length_().maxValue(v);
  83         }
  84         void shrinkLength() {
  85             length_().shrink();
  86         };
  87
  88     protected:
  89         size_type length_bytes() const { return length_().bytes(); };
  90         void length(DynamicTLVLengthParser::value_type &v) { length_() = v; };
  91         senf::safe_data_iterator resizeValue(DynamicTLVLengthParser::value_type size);
  92     };
  93
  94
  95     struct GenericTLVPacketParser : public BaseTLVPacketParser
  96     {
  97 #       include SENF_PARSER()
  98         SENF_PARSER_INHERIT  ( BaseTLVPacketParser    );
  99         SENF_PARSER_SKIP     ( length(), 0            );
 100         SENF_PARSER_FINALIZE ( GenericTLVPacketParser );
 101
 102         SENF_PARSER_INIT() {
 103             maxLengthValue( DynamicTLVLengthParser::max_value);
 104         }
 105
 106         senf::PacketInterpreterBase::range value() const;
 107
 108         template <class ForwardReadableRange>
 109         void value(ForwardReadableRange const &range);
 110     };
 111
 112     struct GenericTLVPacketType
 113         : public PacketTypeBase,
 114           public PacketTypeMixin<GenericTLVPacketType>
 115     {
 116         typedef PacketTypeMixin<GenericTLVPacketType> mixin;
 117         typedef ConcretePacket<GenericTLVPacketType> packet;
 118         typedef GenericTLVPacketParser parser;
 119
 120         using mixin::nextPacketRange;
 121         using mixin::init;
 122         using mixin::initSize;
 123
 124         static void finalize(packet p);
 125         static void dump(packet p, std::ostream & os);
 126     };
 127
 128     typedef ConcretePacket<GenericTLVPacketType> GenericTLVPacket;
 129 }
 130
 131
 132 ///////////////////////////////hh.e////////////////////////////////////////
 133 //#include "TLVPacket.cci"
 134 #include "TLVPacket.ct"
 135 //#include "TLVPacket.cti"
 136 #endif
 137
 138 \f
 139 // Local Variables:
 140 // mode: c++
 141 // fill-column: 100
 142 // c-file-style: "senf"
 143 // indent-tabs-mode: nil
 144 // ispell-local-dictionary: "american"
 145 // compile-command: "scons -u test"
 146 // comment-column: 40
 147 // End: