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