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     : BSDSocketAddress (sizeof(sockaddr_in), AF_INET)
  48 {
  49     std::string::size_type 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     : BSDSocketAddress (sizeof(sockaddr_in), AF_INET)
  63 {
  64     address(addr);
  65     port(p);
  66 }
  67
  68 prefix_ senf::INet4SocketAddress::INet4SocketAddress(unsigned p)
  69     : BSDSocketAddress (sizeof(sockaddr_in), AF_INET)
  70 {
  71     port(p);
  72 }
  73
  74 prefix_ std::ostream & senf::operator<<(std::ostream & os, INet4SocketAddress const & addr)
  75 {
  76     os << addr.address() << ":" << addr.port();
  77     return os;
  78 }
  79
  80 prefix_ std::istream & senf::operator>>(std::istream & is, INet4SocketAddress & addr)
  81 {
  82     std::string s;
  83     if (!(is >> s))
  84         return is;
  85     try {
  86         addr = INet4SocketAddress(s);
  87     }
  88     catch (AddressException &) {
  89         is.setstate(std::ios::failbit);
  90     }
  91     return is;
  92 }
  93
  94 ///////////////////////////////////////////////////////////////////////////
  95 // senf::INet6SocketAddress
  96
  97 prefix_ senf::INet6SocketAddress::INet6SocketAddress(std::string const & addr,
  98                                                      INet6Address::Resolve_t resolve)
  99     : BSDSocketAddress (sizeof(sockaddr_in6), AF_INET6)
 100 {
 101     // Format of addr: "[" address [ "%" interface ] "]" ":" port
 102     //             or: host ":" port
 103     //             or: port
 104
 105     static boost::regex const addressRx ("(?:(?:\\[([^%]+)(?:%(.+))?\\]|(.+)):)?([0-9]+)");
 106     // Subexpression numbers:
 107     enum { Address  = 1,
 108            ZoneId   = 2,
 109            Hostname = 3,
 110            Port     = 4 };
 111
 112     boost::smatch match;
 113     if (! regex_match(addr, match, addressRx))
 114         throw AddressSyntaxException();
 115
 116     if (match[ZoneId].matched)
 117         assignIface(match[ZoneId]);
 118
 119     sockaddr_.sin6_port = htons(boost::lexical_cast<boost::uint16_t>(match[Port]));
 120
 121     if (match[Address].matched || match[Hostname].matched) {
 122         INet6Address a (INet6Address::from_string(
 123                             match[Address].matched ? match[Address] : match[Hostname],
 124                             resolve));
 125         std::copy(a.begin(), a.end(), &sockaddr_.sin6_addr.s6_addr[0]);
 126     }
 127 }
 128
 129 prefix_ std::string senf::INet6SocketAddress::iface()
 130     const
 131 {
 132     if (sockaddr_.sin6_scope_id == 0)
 133         return "";
 134     char buffer[IFNAMSIZ];
 135 #ifdef SENF_DEBUG
 136     SENF_ASSERT( if_indextoname(sockaddr_.sin6_scope_id,buffer) );
 137 #else
 138     if_indextoname(sockaddr_.sin6_scope_id,buffer);
 139 #endif
 140     return std::string(buffer);
 141 }
 142
 143 prefix_ void senf::INet6SocketAddress::assignIface(std::string const & iface)
 144 {
 145     if (iface.empty())
 146         sockaddr_.sin6_scope_id = 0;
 147     else {
 148         sockaddr_.sin6_scope_id = if_nametoindex(iface.c_str());
 149         if (sockaddr_.sin6_scope_id == 0)
 150             throw AddressSyntaxException();
 151     }
 152 }
 153
 154 prefix_ std::ostream & senf::operator<<(std::ostream & os, INet6SocketAddress const & addr)
 155 {
 156     os << '[' << addr.address();
 157     std::string iface (addr.iface());
 158     if (! iface.empty())
 159         os << '%' << iface;
 160     os << "]:" << addr.port();
 161     return os;
 162 }
 163
 164 prefix_ std::istream & senf::operator>>(std::istream & is, INet6SocketAddress & addr)
 165 {
 166     std::string s;
 167     if (!(is >> s))
 168         return is;
 169     try {
 170         addr = INet6SocketAddress(s);
 171     }
 172     catch (AddressException &) {
 173         is.setstate(std::ios::failbit);
 174     }
 175     return is;
 176 }
 177
 178 ///////////////////////////////cc.e////////////////////////////////////////
 179 #undef prefix_
 180 //#include "INetAddressing.mpp"
 181
 182
 183 // Local Variables:
 184 // mode: c++
 185 // fill-column: 100
 186 // c-file-style: "senf"
 187 // indent-tabs-mode: nil
 188 // ispell-local-dictionary: "american"
 189 // compile-command: "scons -u test"
 190 // comment-column: 40
 191 // End: