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 i = addr.find(':');
  50     if (i == std::string::npos)
  51         throw SyntaxException();
  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     try {
  59         address(INet4Address::from_string(std::string(addr,0,i)));
  60     }
  61     catch (INet4Address::SyntaxException const &) {
  62         throw SyntaxException();
  63     }
  64 }
  65
  66 prefix_ senf::INet4SocketAddress::INet4SocketAddress(INet4Address const & addr, unsigned p)
  67 {
  68     clear();
  69     address(addr);
  70     port(p);
  71 }
  72
  73 prefix_ void senf::INet4SocketAddress::clear()
  74 {
  75     ::memset(&addr_,0,sizeof(addr_));
  76     addr_.sin_family = AF_INET;
  77 }
  78
  79 ///////////////////////////////////////////////////////////////////////////
  80 // senf::INet6SocketAddress
  81
  82 prefix_ senf::INet6SocketAddress::INet6SocketAddress(std::string const & addr,
  83                                                      INet6Address::Resolve_t resolve)
  84 {
  85     clear();
  86
  87     // Format of addr: "[" address [ "%" interface ] "]" ":" port
  88     //             or: host ":" port
  89
  90     static boost::regex const addressRx ("(?:\\[([a-f0-9A-F:]+)(?:%(.+))?\\]|(.+)):([0-9]+)");
  91     // Subexpression numbers:
  92     enum { NumericAddr = 1,
  93            ZoneId      = 2,
  94            Hostname    = 3,
  95            Port        = 4 };
  96
  97     boost::smatch match;
  98     if (! regex_match(addr, match, addressRx))
  99         throw SyntaxException();
 100
 101     if (match[ZoneId].matched)
 102         assignIface(match[ZoneId]);
 103
 104     sockaddr_.sin6_port = htons(boost::lexical_cast<boost::uint16_t>(match[Port]));
 105
 106     try {
 107         INet6Address a (INet6Address::from_string(
 108                             match[NumericAddr].matched ? match[NumericAddr] : match[Hostname],
 109                             resolve));
 110         std::copy(a.begin(), a.end(), &sockaddr_.sin6_addr.s6_addr[0]);
 111     } catch (INet6Address::SyntaxException const &) {
 112           throw SyntaxException();
 113     }
 114 }
 115
 116 prefix_ bool senf::INet6SocketAddress::operator==(INet6SocketAddress const & other)
 117     const
 118 {
 119     return ::memcmp(&sockaddr_.sin6_addr, &other.sockaddr_.sin6_addr, sizeof(sockaddr_.sin6_addr))==0 &&
 120         sockaddr_.sin6_port == other.sockaddr_.sin6_port &&
 121         sockaddr_.sin6_scope_id == other.sockaddr_.sin6_scope_id;
 122 }
 123
 124 prefix_ bool senf::INet6SocketAddress::operator!=(INet6SocketAddress const & other)
 125     const
 126 {
 127     return ! operator==(other);
 128 }
 129
 130 prefix_ void senf::INet6SocketAddress::clear()
 131 {
 132     ::memset(&sockaddr_,0,sizeof(sockaddr_));
 133     sockaddr_.sin6_family = AF_INET6;
 134 }
 135
 136 prefix_ std::string senf::INet6SocketAddress::iface()
 137     const
 138 {
 139     if (sockaddr_.sin6_scope_id == 0)
 140         return "";
 141     char buffer[IFNAMSIZ];
 142 #ifndef SENF_NO_DEBUG
 143     SENF_ASSERT( if_indextoname(sockaddr_.sin6_scope_id,buffer) );
 144 #else
 145     if_indextoname(sockaddr_.sin6_scope_id,buffer);
 146 #endif
 147     return std::string(buffer);
 148 }
 149
 150 prefix_ void senf::INet6SocketAddress::assignIface(std::string const & iface)
 151 {
 152     if (iface.empty())
 153         sockaddr_.sin6_scope_id = 0;
 154     else {
 155         sockaddr_.sin6_scope_id = if_nametoindex(iface.c_str());
 156         if (sockaddr_.sin6_scope_id == 0)
 157             throw SyntaxException();
 158     }
 159 }
 160
 161 ///////////////////////////////cc.e////////////////////////////////////////
 162 #undef prefix_
 163 //#include "INetAddressing.mpp"
 164
 165 \f
 166 // Local Variables:
 167 // mode: c++
 168 // fill-column: 100
 169 // c-file-style: "senf"
 170 // indent-tabs-mode: nil
 171 // ispell-local-dictionary: "american"
 172 // compile-command: "scons -u test"
 173 // comment-column: 40
 174 // End: