Socket/Protocols/INet/INetAddressing.cc

   1 // $Id$
   2 //
   3 // Copyright (C) 2006
   4 // Fraunhofer Institut fuer offene Kommunikationssysteme (FOKUS)
   5 // Kompetenzzentrum fuer Satelitenkommunikation (SatCom)
   6 //     Stefan Bund <stefan.bund@fokus.fraunhofer.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/tokenizer.hpp>
  37 #include <boost/range.hpp>
  38
  39 //#include "INetAddressing.mpp"
  40 #define prefix_
  41 ///////////////////////////////cc.p////////////////////////////////////////
  42
  43 ///////////////////////////////////////////////////////////////////////////
  44 // senf::INet4Address
  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     address(INet4Address::from_string(std::string(addr,0,i)));
  53     try {
  54         port(boost::lexical_cast< ::u_int16_t >(std::string(addr,i+1)));
  55     }
  56     catch (boost::bad_lexical_cast const &) {
  57         throw SyntaxException();
  58     }
  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::INet6Address
  76
  77 prefix_ senf::INet6Address::INet6Address(std::string const & addr)
  78 {
  79     if (inet_pton(AF_INET6,addr.c_str(),&addr_) <= 0)
  80         throw SyntaxException();
  81 }
  82
  83 prefix_ senf::INet6Address::INet6Address(char const * addr)
  84 {
  85     if (inet_pton(AF_INET6,addr,&addr_) <= 0)
  86         throw SyntaxException();
  87 }
  88
  89 prefix_ void senf::INet6Address::clear()
  90 {
  91     ::memset(&addr_,0,sizeof(addr_));
  92 }
  93
  94 prefix_ std::string senf::INet6Address::address()
  95     const
  96 {
  97     char buffer[8*5];
  98     BOOST_ASSERT( inet_ntop(AF_INET6, &addr_, buffer, sizeof(buffer)) );
  99     return std::string(buffer);
 100 }
 101
 102 prefix_ bool senf::INet6Address::operator==(INet6Address const & other)
 103     const
 104 {
 105     return ::memcmp(&addr_,&other.addr_,sizeof(addr_))==0;
 106 }
 107
 108 prefix_ bool senf::INet6Address::operator!=(INet6Address const & other)
 109     const
 110 {
 111     return !operator==(other);
 112 }
 113
 114 ///////////////////////////////////////////////////////////////////////////
 115 // senf::INet6SocketAddress
 116
 117 prefix_ bool senf::INet6SocketAddress::operator==(INet6SocketAddress const & other)
 118     const
 119 {
 120     return ::memcmp(&sockaddr_.sin6_addr, &other.sockaddr_.sin6_addr, sizeof(sockaddr_.sin6_addr))==0 &&
 121         sockaddr_.sin6_port == other.sockaddr_.sin6_port &&
 122         sockaddr_.sin6_scope_id == other.sockaddr_.sin6_scope_id;
 123 }
 124
 125 prefix_ bool senf::INet6SocketAddress::operator!=(INet6SocketAddress const & other)
 126     const
 127 {
 128     return ! operator==(other);
 129 }
 130
 131 prefix_ void senf::INet6SocketAddress::clear()
 132 {
 133     ::memset(&sockaddr_,0,sizeof(sockaddr_));
 134     sockaddr_.sin6_family = AF_INET6;
 135 }
 136
 137 prefix_ std::string senf::INet6SocketAddress::address()
 138     const
 139 {
 140     std::stringstream ss;
 141     ss << '[' << host();
 142     if (sockaddr_.sin6_scope_id != 0)
 143         ss << '@' << iface()
 144     << "]:" << port();
 145     return ss.str();
 146 }
 147
 148 prefix_ std::string senf::INet6SocketAddress::iface()
 149     const
 150 {
 151     if (sockaddr_.sin6_scope_id == 0)
 152         return "";
 153     char buffer[IFNAMSIZ];
 154     BOOST_ASSERT( if_indextoname(sockaddr_.sin6_scope_id,buffer) );
 155     return std::string(buffer);
 156 }
 157
 158 prefix_ void senf::INet6SocketAddress::assignAddr(std::string const & addr)
 159 {
 160     // Format of addr: "[" address [ "@" interface ] "]" ":" port
 161     typedef boost::char_separator<char> separator;
 162     typedef boost::tokenizer<separator> tokenizer;
 163     // we don't add ':' to the list of separators since that would give as the IPv6 address
 164     // as a list of tokens. We just strip the : from the port number manually
 165     separator sep ("", "@[]");
 166     tokenizer tokens (addr, sep);
 167     tokenizer::iterator token (tokens.begin());
 168     if (token == tokens.end()
 169         || *token != "["
 170         || ++token == tokens.end()
 171         || inet_pton(AF_INET6, std::string(boost::begin(*token),boost::end(*token)).c_str(),
 172                      &sockaddr_.sin6_addr) <= 0
 173         || ++token == tokens.end())
 174         throw SyntaxException();
 175     if (*token == "@") {
 176         if (++token == tokens.end())
 177             throw SyntaxException();
 178         assignIface(std::string(boost::begin(*token),boost::end(*token)));
 179         if (++token == tokens.end()
 180             || *token != "]")
 181             throw SyntaxException();
 182     } else if (*token != "]")
 183         throw SyntaxException();
 184     if (++token == tokens.end()
 185         || *boost::begin(*token) != ':')
 186         throw SyntaxException();
 187     try {
 188         sockaddr_.sin6_port = htons(
 189             boost::lexical_cast<unsigned>(std::string(boost::next(boost::begin(*token)),
 190                                                       boost::end(*token))));
 191     } catch(boost::bad_lexical_cast const &) {
 192         throw SyntaxException();
 193     }
 194     if (++token != tokens.end())
 195         throw SyntaxException();
 196 }
 197
 198 prefix_ void senf::INet6SocketAddress::assignIface(std::string const & iface)
 199 {
 200     if (iface.empty())
 201         sockaddr_.sin6_scope_id = 0;
 202     else {
 203         sockaddr_.sin6_scope_id = if_nametoindex(iface.c_str());
 204         if (sockaddr_.sin6_scope_id == 0)
 205             throw SyntaxException();
 206     }
 207 }
 208
 209 ///////////////////////////////cc.e////////////////////////////////////////
 210 #undef prefix_
 211 //#include "INetAddressing.mpp"
 212
 213 \f
 214 // Local Variables:
 215 // mode: c++
 216 // fill-column: 100
 217 // c-file-style: "senf"
 218 // indent-tabs-mode: nil
 219 // ispell-local-dictionary: "american"
 220 // compile-command: "scons -u test"
 221 // comment-column: 40
 222 // End: