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