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 #include "../../../Utils/senfassert.hh"
  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 portIx = addr.find(':');
  50     try {
  51         port( boost::lexical_cast< ::u_int16_t >(portIx == std::string::npos
  52                                                  ? addr : std::string(addr,portIx+1)) );
  53     }
  54     catch (boost::bad_lexical_cast const &) {
  55         throw AddressSyntaxException() << "invalid port number";
  56     }
  57     if (portIx != std::string::npos)
  58         address( INet4Address::from_string(std::string(addr,0,portIx)) );
  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_ senf::INet6SocketAddress::INet6SocketAddress(std::string const & addr,
  78                                                      INet6Address::Resolve_t resolve)
  79 {
  80     clear();
  81
  82     // Format of addr: "[" address [ "%" interface ] "]" ":" port
  83     //             or: host ":" port
  84     //             or: port
  85
  86     static boost::regex const addressRx ("(?:(?:\\[([a-f0-9A-F:]+)(?:%(.+))?\\]|(.+)):)?([0-9]+)");
  87     // Subexpression numbers:
  88     enum { NumericAddr = 1,
  89            ZoneId      = 2,
  90            Hostname    = 3,
  91            Port        = 4 };
  92
  93     boost::smatch match;
  94     if (! regex_match(addr, match, addressRx))
  95         throw AddressSyntaxException();
  96
  97     if (match[ZoneId].matched)
  98         assignIface(match[ZoneId]);
  99
 100     sockaddr_.sin6_port = htons(boost::lexical_cast<boost::uint16_t>(match[Port]));
 101
 102     if (match[NumericAddr].matched || match[Hostname].matched) {
 103         INet6Address a (INet6Address::from_string(
 104                             match[NumericAddr].matched ? match[NumericAddr] : match[Hostname],
 105                             resolve));
 106         std::copy(a.begin(), a.end(), &sockaddr_.sin6_addr.s6_addr[0]);
 107     }
 108 }
 109
 110 prefix_ bool senf::INet6SocketAddress::operator==(INet6SocketAddress const & other)
 111     const
 112 {
 113     return ::memcmp(&sockaddr_.sin6_addr, &other.sockaddr_.sin6_addr, sizeof(sockaddr_.sin6_addr))==0 &&
 114         sockaddr_.sin6_port == other.sockaddr_.sin6_port &&
 115         sockaddr_.sin6_scope_id == other.sockaddr_.sin6_scope_id;
 116 }
 117
 118 prefix_ void senf::INet6SocketAddress::clear()
 119 {
 120     ::memset(&sockaddr_,0,sizeof(sockaddr_));
 121     sockaddr_.sin6_family = AF_INET6;
 122 }
 123
 124 prefix_ std::string senf::INet6SocketAddress::iface()
 125     const
 126 {
 127     if (sockaddr_.sin6_scope_id == 0)
 128         return "";
 129     char buffer[IFNAMSIZ];
 130 #ifdef SENF_DEBUG
 131     SENF_ASSERT( if_indextoname(sockaddr_.sin6_scope_id,buffer) );
 132 #else
 133     if_indextoname(sockaddr_.sin6_scope_id,buffer);
 134 #endif
 135     return std::string(buffer);
 136 }
 137
 138 prefix_ void senf::INet6SocketAddress::assignIface(std::string const & iface)
 139 {
 140     if (iface.empty())
 141         sockaddr_.sin6_scope_id = 0;
 142     else {
 143         sockaddr_.sin6_scope_id = if_nametoindex(iface.c_str());
 144         if (sockaddr_.sin6_scope_id == 0)
 145             throw AddressSyntaxException();
 146     }
 147 }
 148
 149 ///////////////////////////////cc.e////////////////////////////////////////
 150 #undef prefix_
 151 //#include "INetAddressing.mpp"
 152
 153 \f
 154 // Local Variables:
 155 // mode: c++
 156 // fill-column: 100
 157 // c-file-style: "senf"
 158 // indent-tabs-mode: nil
 159 // ispell-local-dictionary: "american"
 160 // compile-command: "scons -u test"
 161 // comment-column: 40
 162 // End: