senf/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 <senf/Utils/senfassert.hh>
  38 #include <senf/Socket/Protocols/AddressExceptions.hh>
  39
  40 //#include "INetAddressing.mpp"
  41 #define prefix_
  42 //-/////////////////////////////////////////////////////////////////////////////////////////////////
  43
  44 //-/////////////////////////////////////////////////////////////////////////////////////////////////
  45 // senf::INet4SocketAddress
  46
  47 prefix_ senf::INet4SocketAddress::INet4SocketAddress(std::string const & addr)
  48     : BSDSocketAddress (sizeof(sockaddr_in), AF_INET)
  49 {
  50     std::string::size_type portIx = addr.find(':');
  51     try {
  52         port( boost::lexical_cast< ::u_int16_t >(portIx == std::string::npos
  53                                                  ? addr : std::string(addr,portIx+1)) );
  54     }
  55     catch (boost::bad_lexical_cast const &) {
  56         throw AddressSyntaxException(addr) << ": invalid port number";
  57     }
  58     if (portIx != std::string::npos)
  59         address( INet4Address::from_string(std::string(addr,0,portIx)) );
  60 }
  61
  62 prefix_ senf::INet4SocketAddress::INet4SocketAddress(INet4Address const & addr, unsigned p)
  63     : BSDSocketAddress (sizeof(sockaddr_in), AF_INET)
  64 {
  65     address(addr);
  66     port(p);
  67 }
  68
  69 prefix_ senf::INet4SocketAddress::INet4SocketAddress(unsigned p)
  70     : BSDSocketAddress (sizeof(sockaddr_in), AF_INET)
  71 {
  72     port(p);
  73 }
  74
  75 prefix_ std::ostream & senf::operator<<(std::ostream & os, INet4SocketAddress const & addr)
  76 {
  77     os << addr.address() << ":" << addr.port();
  78     return os;
  79 }
  80
  81 prefix_ std::istream & senf::operator>>(std::istream & is, INet4SocketAddress & addr)
  82 {
  83     std::string s;
  84     if (!(is >> s))
  85         return is;
  86     try {
  87         addr = INet4SocketAddress(s);
  88     }
  89     catch (AddressException &) {
  90         is.setstate(std::ios::failbit);
  91     }
  92     return is;
  93 }
  94
  95 //-/////////////////////////////////////////////////////////////////////////////////////////////////
  96 // senf::INet6SocketAddress
  97
  98 prefix_ senf::INet6SocketAddress::INet6SocketAddress(std::string const & addr,
  99                                                      INet6Address::Resolve_t resolve)
 100     : BSDSocketAddress (sizeof(sockaddr_in6), AF_INET6)
 101 {
 102     // Format of addr: "[" address [ "%" interface ] "]" ":" port
 103     //             or: host ":" port
 104     //             or: port
 105
 106     static boost::regex const addressRx ("(?:(?:\\[([^%]+)(?:%(.+))?\\]|(.+)):)?([0-9]+)");
 107     // Subexpression numbers:
 108     enum { Address  = 1,
 109            ZoneId   = 2,
 110            Hostname = 3,
 111            Port     = 4 };
 112
 113     boost::smatch match;
 114     if (! regex_match(addr, match, addressRx))
 115         throw AddressSyntaxException(addr);
 116
 117     if (match[ZoneId].matched)
 118         assignIface(match[ZoneId]);
 119
 120     sockaddr_.sin6_port = htons(boost::lexical_cast<boost::uint16_t>(match[Port]));
 121
 122     if (match[Address].matched || match[Hostname].matched) {
 123         INet6Address a (INet6Address::from_string(
 124                             match[Address].matched ? match[Address] : match[Hostname],
 125                             resolve));
 126         std::copy(a.begin(), a.end(), &sockaddr_.sin6_addr.s6_addr[0]);
 127     }
 128 }
 129
 130 prefix_ std::string senf::INet6SocketAddress::iface()
 131     const
 132 {
 133     if (sockaddr_.sin6_scope_id == 0)
 134         return "";
 135     char buffer[IFNAMSIZ];
 136     SENF_ASSERT_EXPRESSION(if_indextoname(sockaddr_.sin6_scope_id,buffer),
 137                            "Internal failure: Invalid interface index (how does it get here?)");
 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(iface);
 149     }
 150 }
 151
 152 prefix_ std::ostream & senf::operator<<(std::ostream & os, INet6SocketAddress const & addr)
 153 {
 154     os << '[' << addr.address();
 155     std::string iface (addr.iface());
 156     if (! iface.empty())
 157         os << '%' << iface;
 158     os << "]:" << addr.port();
 159     return os;
 160 }
 161
 162 prefix_ std::istream & senf::operator>>(std::istream & is, INet6SocketAddress & addr)
 163 {
 164     std::string s;
 165     if (!(is >> s))
 166         return is;
 167     try {
 168         addr = INet6SocketAddress(s);
 169     }
 170     catch (AddressException &) {
 171         is.setstate(std::ios::failbit);
 172     }
 173     return is;
 174 }
 175
 176 //-/////////////////////////////////////////////////////////////////////////////////////////////////
 177 #undef prefix_
 178 //#include "INetAddressing.mpp"
 179
 180 \f
 181 // Local Variables:
 182 // mode: c++
 183 // fill-column: 100
 184 // c-file-style: "senf"
 185 // indent-tabs-mode: nil
 186 // ispell-local-dictionary: "american"
 187 // compile-command: "scons -u test"
 188 // comment-column: 40
 189 // End: