Socket/Protocols/INet/INetAddressing.cc

   1 // $Id$
   2 //
   3 // Copyright (C) 2006
   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 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     try {
  52         port(boost::lexical_cast< ::u_int16_t >(std::string(addr,i+1)));
  53     }
  54     catch (boost::bad_lexical_cast const &) {
  55         throw SyntaxException();
  56     }
  57     try {
  58         address(INet4Address::from_string(std::string(addr,0,i)));
  59     }
  60     catch (INet4Address::SyntaxException const &) {
  61         throw SyntaxException();
  62     }
  63 }
  64
  65 prefix_ senf::INet4SocketAddress::INet4SocketAddress(INet4Address const & addr, unsigned p)
  66 {
  67     clear();
  68     address(addr);
  69     port(p);
  70 }
  71
  72 prefix_ void senf::INet4SocketAddress::clear()
  73 {
  74     ::memset(&addr_,0,sizeof(addr_));
  75     addr_.sin_family = AF_INET;
  76 }
  77
  78 ///////////////////////////////////////////////////////////////////////////
  79 // senf::INet6SocketAddress
  80
  81 prefix_ senf::INet6SocketAddress::INet6SocketAddress(std::string const & addr,
  82                                                      INet6Address::Resolve_t resolve)
  83 {
  84     clear();
  85
  86     // Format of addr: "[" address [ "%" interface ] "]" ":" port
  87     //             or: host ":" port
  88
  89     static boost::regex const addressRx ("(?:\\[([a-f0-9A-F:]+)(?:%(.+))?\\]|(.+)):([0-9]+)");
  90     // Subexpression numbers:
  91     enum { NumericAddr = 1,
  92            ZoneId      = 2,
  93            Hostname    = 3,
  94            Port        = 4 };
  95
  96     boost::smatch match;
  97     if (! regex_match(addr, match, addressRx))
  98         throw SyntaxException();
  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     try {
 106         INet6Address a (INet6Address::from_string(
 107                             match[NumericAddr].matched ? match[NumericAddr] : match[Hostname],
 108                             resolve));
 109         std::copy(a.begin(), a.end(), &sockaddr_.sin6_addr.s6_addr[0]);
 110     } catch (INet6Address::SyntaxException const &) {
 111           throw SyntaxException();
 112     }
 113 }
 114
 115 prefix_ bool senf::INet6SocketAddress::operator==(INet6SocketAddress const & other)
 116     const
 117 {
 118     return ::memcmp(&sockaddr_.sin6_addr, &other.sockaddr_.sin6_addr, sizeof(sockaddr_.sin6_addr))==0 &&
 119         sockaddr_.sin6_port == other.sockaddr_.sin6_port &&
 120         sockaddr_.sin6_scope_id == other.sockaddr_.sin6_scope_id;
 121 }
 122
 123 prefix_ bool senf::INet6SocketAddress::operator!=(INet6SocketAddress const & other)
 124     const
 125 {
 126     return ! operator==(other);
 127 }
 128
 129 prefix_ void senf::INet6SocketAddress::clear()
 130 {
 131     ::memset(&sockaddr_,0,sizeof(sockaddr_));
 132     sockaddr_.sin6_family = AF_INET6;
 133 }
 134
 135 prefix_ std::string senf::INet6SocketAddress::iface()
 136     const
 137 {
 138     if (sockaddr_.sin6_scope_id == 0)
 139         return "";
 140     char buffer[IFNAMSIZ];
 141 #ifndef NDEBUG
 142     BOOST_ASSERT( if_indextoname(sockaddr_.sin6_scope_id,buffer) );
 143 #else
 144     if_indextoname(sockaddr_.sin6_scope_id,buffer);
 145 #endif
 146     return std::string(buffer);
 147 }
 148
 149 prefix_ void senf::INet6SocketAddress::assignIface(std::string const & iface)
 150 {
 151     if (iface.empty())
 152         sockaddr_.sin6_scope_id = 0;
 153     else {
 154         sockaddr_.sin6_scope_id = if_nametoindex(iface.c_str());
 155         if (sockaddr_.sin6_scope_id == 0)
 156             throw SyntaxException();
 157     }
 158 }
 159
 160 ///////////////////////////////cc.e////////////////////////////////////////
 161 #undef prefix_
 162 //#include "INetAddressing.mpp"
 163
 164 \f
 165 // Local Variables:
 166 // mode: c++
 167 // fill-column: 100
 168 // c-file-style: "senf"
 169 // indent-tabs-mode: nil
 170 // ispell-local-dictionary: "american"
 171 // compile-command: "scons -u test"
 172 // comment-column: 40
 173 // End: