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/tokenizer.hpp>
  37 #include <boost/range.hpp>
  38
  39 //#include "INetAddressing.mpp"
  40 #define prefix_
  41 ///////////////////////////////cc.p////////////////////////////////////////
  42
  43 ///////////////////////////////////////////////////////////////////////////
  44 // senf::INet4SocketAddress
  45
  46 prefix_ senf::INet4SocketAddress::INet4SocketAddress(std::string const & addr)
  47 {
  48     clear();
  49     unsigned i = addr.find(':');
  50     if (i == std::string::npos)
  51         throw SyntaxException();
  52     address(INet4Address::from_string(std::string(addr,0,i)));
  53     try {
  54         port(boost::lexical_cast< ::u_int16_t >(std::string(addr,i+1)));
  55     }
  56     catch (boost::bad_lexical_cast const &) {
  57         throw SyntaxException();
  58     }
  59 }
  60
  61 prefix_ senf::INet4SocketAddress::INet4SocketAddress(INet4Address const & addr, unsigned p)
  62 {
  63     clear();
  64     address(addr);
  65     port(p);
  66 }
  67
  68 prefix_ void senf::INet4SocketAddress::clear()
  69 {
  70     ::memset(&addr_,0,sizeof(addr_));
  71     addr_.sin_family = AF_INET;
  72 }
  73
  74 ///////////////////////////////////////////////////////////////////////////
  75 // senf::INet6SocketAddress
  76
  77 prefix_ bool senf::INet6SocketAddress::operator==(INet6SocketAddress const & other)
  78     const
  79 {
  80     return ::memcmp(&sockaddr_.sin6_addr, &other.sockaddr_.sin6_addr, sizeof(sockaddr_.sin6_addr))==0 &&
  81         sockaddr_.sin6_port == other.sockaddr_.sin6_port &&
  82         sockaddr_.sin6_scope_id == other.sockaddr_.sin6_scope_id;
  83 }
  84
  85 prefix_ bool senf::INet6SocketAddress::operator!=(INet6SocketAddress const & other)
  86     const
  87 {
  88     return ! operator==(other);
  89 }
  90
  91 prefix_ void senf::INet6SocketAddress::clear()
  92 {
  93     ::memset(&sockaddr_,0,sizeof(sockaddr_));
  94     sockaddr_.sin6_family = AF_INET6;
  95 }
  96
  97 prefix_ std::string senf::INet6SocketAddress::address()
  98     const
  99 {
 100     std::stringstream ss;
 101     ss << '[' << host();
 102     if (sockaddr_.sin6_scope_id != 0)
 103         ss << '@' << iface()
 104     << "]:" << port();
 105     return ss.str();
 106 }
 107
 108 prefix_ std::string senf::INet6SocketAddress::iface()
 109     const
 110 {
 111     if (sockaddr_.sin6_scope_id == 0)
 112         return "";
 113     char buffer[IFNAMSIZ];
 114     BOOST_ASSERT( if_indextoname(sockaddr_.sin6_scope_id,buffer) );
 115     return std::string(buffer);
 116 }
 117
 118 prefix_ void senf::INet6SocketAddress::assignAddr(std::string const & addr)
 119 {
 120     // Format of addr: "[" address [ "@" interface ] "]" ":" port
 121     typedef boost::char_separator<char> separator;
 122     typedef boost::tokenizer<separator> tokenizer;
 123     // we don't add ':' to the list of separators since that would give as the IPv6 address
 124     // as a list of tokens. We just strip the : from the port number manually
 125     separator sep ("", "@[]");
 126     tokenizer tokens (addr, sep);
 127     tokenizer::iterator token (tokens.begin());
 128     if (token == tokens.end()
 129         || *token != "["
 130         || ++token == tokens.end()
 131         || inet_pton(AF_INET6, std::string(boost::begin(*token),boost::end(*token)).c_str(),
 132                      &sockaddr_.sin6_addr) <= 0
 133         || ++token == tokens.end())
 134         throw SyntaxException();
 135     if (*token == "@") {
 136         if (++token == tokens.end())
 137             throw SyntaxException();
 138         assignIface(std::string(boost::begin(*token),boost::end(*token)));
 139         if (++token == tokens.end()
 140             || *token != "]")
 141             throw SyntaxException();
 142     } else if (*token != "]")
 143         throw SyntaxException();
 144     if (++token == tokens.end()
 145         || *boost::begin(*token) != ':')
 146         throw SyntaxException();
 147     try {
 148         sockaddr_.sin6_port = htons(
 149             boost::lexical_cast<unsigned>(std::string(boost::next(boost::begin(*token)),
 150                                                       boost::end(*token))));
 151     } catch(boost::bad_lexical_cast const &) {
 152         throw SyntaxException();
 153     }
 154     if (++token != tokens.end())
 155         throw SyntaxException();
 156 }
 157
 158 prefix_ void senf::INet6SocketAddress::assignIface(std::string const & iface)
 159 {
 160     if (iface.empty())
 161         sockaddr_.sin6_scope_id = 0;
 162     else {
 163         sockaddr_.sin6_scope_id = if_nametoindex(iface.c_str());
 164         if (sockaddr_.sin6_scope_id == 0)
 165             throw SyntaxException();
 166     }
 167 }
 168
 169 ///////////////////////////////cc.e////////////////////////////////////////
 170 #undef prefix_
 171 //#include "INetAddressing.mpp"
 172
 173 \f
 174 // Local Variables:
 175 // mode: c++
 176 // fill-column: 100
 177 // c-file-style: "senf"
 178 // indent-tabs-mode: nil
 179 // ispell-local-dictionary: "american"
 180 // compile-command: "scons -u test"
 181 // comment-column: 40
 182 // End: