Socket/Protocols/INet/INetAddressing.cc

   1 // $Id$
   2 //
   3 // Copyright (C) 2006
   4 // Fraunhofer Institut fuer offene Kommunikationssysteme (FOKUS)
   5 // Kompetenzzentrum fuer Satelitenkommunikation (SatCom)
   6 //     Stefan Bund <stefan.bund@fokus.fraunhofer.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 INet[46]Address and INet[46]AddressingPolicy non-inline non-template implementation
  25  */
  26
  27 #include "INetAddressing.hh"
  28 //#include "INetAddressing.ih"
  29
  30 // Custom includes
  31 #include <sstream>
  32 #include <string.h>
  33 #include <sys/socket.h>
  34 #include <net/if.h>
  35 #include <boost/lexical_cast.hpp>
  36 #include <boost/regex.hpp>
  37
  38 //#include "INetAddressing.mpp"
  39 #define prefix_
  40 ///////////////////////////////cc.p////////////////////////////////////////
  41
  42 ///////////////////////////////////////////////////////////////////////////
  43 // senf::INet4SocketAddress
  44
  45 prefix_ senf::INet4SocketAddress::INet4SocketAddress(std::string const & addr)
  46 {
  47     clear();
  48     unsigned i = addr.find(':');
  49     if (i == std::string::npos)
  50         throw SyntaxException();
  51     address(INet4Address::from_string(std::string(addr,0,i)));
  52     try {
  53         port(boost::lexical_cast< ::u_int16_t >(std::string(addr,i+1)));
  54     }
  55     catch (boost::bad_lexical_cast const &) {
  56         throw SyntaxException();
  57     }
  58 }
  59
  60 prefix_ senf::INet4SocketAddress::INet4SocketAddress(INet4Address const & addr, unsigned p)
  61 {
  62     clear();
  63     address(addr);
  64     port(p);
  65 }
  66
  67 prefix_ void senf::INet4SocketAddress::clear()
  68 {
  69     ::memset(&addr_,0,sizeof(addr_));
  70     addr_.sin_family = AF_INET;
  71 }
  72
  73 ///////////////////////////////////////////////////////////////////////////
  74 // senf::INet6SocketAddress
  75
  76 prefix_ senf::INet6SocketAddress::INet6SocketAddress(std::string const & addr,
  77                                                      INet6Address::Resolve_t resolve)
  78 {
  79     clear();
  80
  81     // Format of addr: "[" address [ "%" interface ] "]" ":" port
  82     //             or: host ":" port
  83
  84     static boost::regex const addressRx ("(?:\\[([a-f0-9A-F:]+)(?:%(.+))?\\]|(.+)):([0-9]+)");
  85     // Subexpression numbers:
  86     enum { NumericAddr = 1,
  87            ZoneId      = 2,
  88            Hostname    = 3,
  89            Port        = 4 };
  90
  91     boost::smatch match;
  92     if (! regex_match(addr, match, addressRx))
  93         throw SyntaxException();
  94
  95     INet6Address a (INet6Address::from_string(
  96                         match[NumericAddr].matched ? match[NumericAddr] : match[Hostname],
  97                         resolve));
  98     std::copy(a.begin(), a.end(), &sockaddr_.sin6_addr.s6_addr[0]);
  99
 100     if (match[ZoneId].matched)
 101         assignIface(match[ZoneId]);
 102
 103     sockaddr_.sin6_port = htons(boost::lexical_cast<boost::uint16_t>(match[Port]));
 104 }
 105
 106 prefix_ bool senf::INet6SocketAddress::operator==(INet6SocketAddress const & other)
 107     const
 108 {
 109     return ::memcmp(&sockaddr_.sin6_addr, &other.sockaddr_.sin6_addr, sizeof(sockaddr_.sin6_addr))==0 &&
 110         sockaddr_.sin6_port == other.sockaddr_.sin6_port &&
 111         sockaddr_.sin6_scope_id == other.sockaddr_.sin6_scope_id;
 112 }
 113
 114 prefix_ bool senf::INet6SocketAddress::operator!=(INet6SocketAddress const & other)
 115     const
 116 {
 117     return ! operator==(other);
 118 }
 119
 120 prefix_ void senf::INet6SocketAddress::clear()
 121 {
 122     ::memset(&sockaddr_,0,sizeof(sockaddr_));
 123     sockaddr_.sin6_family = AF_INET6;
 124 }
 125
 126 prefix_ std::string senf::INet6SocketAddress::iface()
 127     const
 128 {
 129     if (sockaddr_.sin6_scope_id == 0)
 130         return "";
 131     char buffer[IFNAMSIZ];
 132 #ifndef NDEBUG
 133     BOOST_ASSERT( if_indextoname(sockaddr_.sin6_scope_id,buffer) );
 134 #else
 135     if_indextoname(sockaddr_.sin6_scope_id,buffer);
 136 #endif
 137     return std::string(buffer);
 138 }
 139
 140 prefix_ void senf::INet6SocketAddress::assignIface(std::string const & iface)
 141 {
 142     if (iface.empty())
 143         sockaddr_.sin6_scope_id = 0;
 144     else {
 145         sockaddr_.sin6_scope_id = if_nametoindex(iface.c_str());
 146         if (sockaddr_.sin6_scope_id == 0)
 147             throw SyntaxException();
 148     }
 149 }
 150
 151 ///////////////////////////////cc.e////////////////////////////////////////
 152 #undef prefix_
 153 //#include "INetAddressing.mpp"
 154
 155 \f
 156 // Local Variables:
 157 // mode: c++
 158 // fill-column: 100
 159 // c-file-style: "senf"
 160 // indent-tabs-mode: nil
 161 // ispell-local-dictionary: "american"
 162 // compile-command: "scons -u test"
 163 // comment-column: 40
 164 // End: