Socket/Protocols/INet/INet4Address.cci

   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 //     Stefan Bund <g0dil@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 INet4Address inline non-template implementation */
  25
  26 // Custom includes
  27
  28 #define prefix_ inline
  29 ///////////////////////////////cci.p///////////////////////////////////////
  30
  31 ///////////////////////////////////////////////////////////////////////////
  32 // senf::INet4Address
  33
  34 prefix_ senf::INet4Address::INet4Address()
  35 {
  36     std::fill(begin(), end(), 0u);
  37 }
  38
  39 prefix_ senf::INet4Address::INet4Address(senf::NoInit_t)
  40 {}
  41
  42 prefix_ senf::INet4Address senf::INet4Address::from_inaddr(inaddr_type v)
  43 {
  44     return INet4Address(v,IsInAddr);
  45 }
  46
  47 prefix_ senf::INet4Address::INet4Address(inaddr_type addr, InAddr_t)
  48 {
  49     iref() = addr;
  50 }
  51
  52 prefix_ bool senf::INet4Address::broadcast()
  53     const
  54 {
  55     return inaddr() == 0xFFFFFFFFu;
  56 }
  57
  58 prefix_ bool senf::INet4Address::boolean_test()
  59     const
  60 {
  61     return inaddr();
  62 }
  63
  64 prefix_ senf::INet4Address::inaddr_type senf::INet4Address::inaddr()
  65     const
  66 {
  67     return iref();
  68 }
  69
  70 prefix_ senf::INet4Address::inaddr_type & senf::INet4Address::iref()
  71 {
  72     return *reinterpret_cast<inaddr_type *>(&(*this)[0]);
  73 }
  74
  75 prefix_ senf::INet4Address::inaddr_type senf::INet4Address::iref()
  76     const
  77 {
  78     return *reinterpret_cast<inaddr_type const *>(&(*this)[0]);
  79 }
  80
  81 ///////////////////////////////////////////////////////////////////////////
  82 // senf::INet4Network
  83
  84 prefix_ senf::INet4Network::INet4Network()
  85     : prefix_len_(), address_()
  86 {}
  87
  88 prefix_ senf::INet4Network::INet4Network(INet4Address address, unsigned prefix_len)
  89     : prefix_len_(prefix_len), address_(INet4Address(address.address() & mask()))
  90 {}
  91
  92 prefix_ senf::INet4Address const & senf::INet4Network::address()
  93     const
  94 {
  95     return address_;
  96 }
  97
  98 prefix_ unsigned senf::INet4Network::prefix_len()
  99     const
 100 {
 101     return prefix_len_;
 102 }
 103
 104 prefix_ bool senf::INet4Network::boolean_test()
 105     const
 106 {
 107     return address() || prefix_len();
 108 }
 109
 110 prefix_ bool senf::INet4Network::operator==(INet4Network const & other)
 111     const
 112 {
 113     return address() == other.address() && prefix_len() == other.prefix_len();
 114 }
 115
 116 prefix_ bool senf::INet4Network::match(INet4Address addr)
 117     const
 118 {
 119     return (addr.address() & mask()) == address_.address();
 120 }
 121
 122 prefix_ bool senf::INet4Network::match(INet4Network net)
 123     const
 124 {
 125     return net.prefix_len() >= prefix_len() && match(net.address());
 126 }
 127
 128 prefix_ senf::INet4Address senf::INet4Network::host(boost::uint32_t number)
 129 {
 130     return INet4Address(address_.address() | (number & ~mask()));
 131 }
 132
 133 prefix_ senf::INet4Network senf::INet4Network::subnet(boost::uint32_t net, unsigned prefix_len)
 134 {
 135     return INet4Network(host(net << (32-prefix_len)),prefix_len);
 136 }
 137
 138 ////////////////////////////////////////
 139 // private members
 140
 141 prefix_ boost::uint32_t senf::INet4Network::mask()
 142     const
 143 {
 144     // This is correct as long as the system is using 2-complement arithmetic ...
 145     return (~((boost::uint32_t(1u)<<(32u-prefix_len()))-1u)) & 0xFFFFFFFFu;
 146 }
 147
 148 ///////////////////////////////////////////////////////////////////////////
 149 // namespace members
 150
 151 prefix_ std::ostream & senf::operator<<(std::ostream & os, INet4Network const & addr)
 152 {
 153     os << addr.address() << '/' << addr.prefix_len();
 154     return os;
 155 }
 156
 157 ///////////////////////////////cci.e///////////////////////////////////////
 158 #undef prefix_
 159
 160 \f
 161 // Local Variables:
 162 // mode: c++
 163 // fill-column: 100
 164 // comment-column: 40
 165 // c-file-style: "senf"
 166 // indent-tabs-mode: nil
 167 // ispell-local-dictionary: "american"
 168 // compile-command: "scons -u test"
 169 // End: