Socket/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::INet4Address::INet4Address(std::string host, unsigned port)
  47 {
  48     clear();
  49     /** \todo  gethostbyname support */
  50     if (::inet_aton(host.c_str(), &addr_.sin_addr) == 0)
  51         throw InvalidINetAddressException();
  52     addr_.sin_port = htons(port);
  53 }
  54
  55 prefix_ std::string senf::INet4Address::str()
  56     const
  57 {
  58     std::stringstream s;
  59     s << host() << ':' << port();
  60     return s.str();
  61 }
  62
  63 prefix_ void senf::INet4Address::clear()
  64 {
  65     ::memset(&addr_,0,sizeof(addr_));
  66     addr_.sin_family = AF_INET;
  67 }
  68
  69 prefix_ void senf::INet4Address::assignString(std::string address)
  70 {
  71     clear();
  72     unsigned i = address.find(':');
  73     if (i == std::string::npos)
  74         throw InvalidINetAddressException();
  75     // The temporary string in the next expr is guaranteed to live
  76     // until end-of-statement
  77     if (::inet_aton(std::string(address,0,i).c_str(), &addr_.sin_addr) == 0)
  78         throw InvalidINetAddressException();
  79     try {
  80         // Replace lexical_cast with strtoul ?
  81         addr_.sin_port = htons(boost::lexical_cast< ::u_int16_t >(std::string(address,i+1)));
  82     }
  83     catch (boost::bad_lexical_cast const &) {
  84         throw InvalidINetAddressException();
  85     }
  86 }
  87
  88 ///////////////////////////////////////////////////////////////////////////
  89 // senf::INet6Address
  90
  91 prefix_ senf::INet6Address::INet6Address(std::string const & addr)
  92 {
  93     if (inet_pton(AF_INET6,addr.c_str(),&addr_) <= 0)
  94         throw InvalidINetAddressException();
  95 }
  96
  97 prefix_ senf::INet6Address::INet6Address(char const * addr)
  98 {
  99     if (inet_pton(AF_INET6,addr,&addr_) <= 0)
 100         throw InvalidINetAddressException();
 101 }
 102
 103 prefix_ void senf::INet6Address::clear()
 104 {
 105     ::memset(&addr_,0,sizeof(addr_));
 106 }
 107
 108 prefix_ std::string senf::INet6Address::address()
 109     const
 110 {
 111     char buffer[8*5];
 112     BOOST_ASSERT( inet_ntop(AF_INET6, &addr_, buffer, sizeof(buffer)) );
 113     return std::string(buffer);
 114 }
 115
 116 prefix_ bool senf::INet6Address::operator==(INet6Address const & other)
 117     const
 118 {
 119     return ::memcmp(&addr_,&other.addr_,sizeof(addr_))==0;
 120 }
 121
 122 prefix_ bool senf::INet6Address::operator!=(INet6Address const & other)
 123     const
 124 {
 125     return !operator==(other);
 126 }
 127
 128 ///////////////////////////////////////////////////////////////////////////
 129 // senf::INet6SocketAddress
 130
 131 prefix_ bool senf::INet6SocketAddress::operator==(INet6SocketAddress const & other)
 132     const
 133 {
 134     return ::memcmp(&sockaddr_.sin6_addr, &other.sockaddr_.sin6_addr, sizeof(sockaddr_.sin6_addr))==0 &&
 135         sockaddr_.sin6_port == other.sockaddr_.sin6_port &&
 136         sockaddr_.sin6_scope_id == other.sockaddr_.sin6_scope_id;
 137 }
 138
 139 prefix_ bool senf::INet6SocketAddress::operator!=(INet6SocketAddress const & other)
 140     const
 141 {
 142     return ! operator==(other);
 143 }
 144
 145 prefix_ void senf::INet6SocketAddress::clear()
 146 {
 147     ::memset(&sockaddr_,0,sizeof(sockaddr_));
 148     sockaddr_.sin6_family = AF_INET6;
 149 }
 150
 151 prefix_ std::string senf::INet6SocketAddress::address()
 152     const
 153 {
 154     std::stringstream ss;
 155     ss << '[' << host();
 156     if (sockaddr_.sin6_scope_id != 0)
 157         ss << '@' << iface()
 158     << "]:" << port();
 159     return ss.str();
 160 }
 161
 162 prefix_ std::string senf::INet6SocketAddress::iface()
 163     const
 164 {
 165     if (sockaddr_.sin6_scope_id == 0)
 166         return "";
 167     char buffer[IFNAMSIZ];
 168     BOOST_ASSERT( if_indextoname(sockaddr_.sin6_scope_id,buffer) );
 169     return std::string(buffer);
 170 }
 171
 172 prefix_ void senf::INet6SocketAddress::assignAddr(std::string const & addr)
 173 {
 174     // Format of addr: "[" address [ "@" interface ] "]" ":" port
 175     typedef boost::char_separator<char> separator;
 176     typedef boost::tokenizer<separator> tokenizer;
 177     // we don't add ':' to the list of separators since that would give as the IPv6 address
 178     // as a list of tokens. We just strip the : from the port number manually
 179     separator sep ("", "@[]");
 180     tokenizer tokens (addr, sep);
 181     tokenizer::iterator token (tokens.begin());
 182     if (token == tokens.end()
 183         || *token != "["
 184         || ++token == tokens.end()
 185         || inet_pton(AF_INET6, std::string(boost::begin(*token),boost::end(*token)).c_str(),
 186                      &sockaddr_.sin6_addr) <= 0
 187         || ++token == tokens.end())
 188         throw InvalidINetAddressException();
 189     if (*token == "@") {
 190         if (++token == tokens.end())
 191             throw InvalidINetAddressException();
 192         assignIface(std::string(boost::begin(*token),boost::end(*token)));
 193         if (++token == tokens.end()
 194             || *token != "]")
 195             throw InvalidINetAddressException();
 196     } else if (*token != "]")
 197         throw InvalidINetAddressException();
 198     if (++token == tokens.end()
 199         || *boost::begin(*token) != ':')
 200         throw InvalidINetAddressException();
 201     try {
 202         sockaddr_.sin6_port = htons(
 203             boost::lexical_cast<unsigned>(std::string(boost::next(boost::begin(*token)),
 204                                                       boost::end(*token))));
 205     } catch(boost::bad_lexical_cast const &) {
 206         throw InvalidINetAddressException();
 207     }
 208     if (++token != tokens.end())
 209         throw InvalidINetAddressException();
 210 }
 211
 212 prefix_ void senf::INet6SocketAddress::assignIface(std::string const & iface)
 213 {
 214     if (iface.empty())
 215         sockaddr_.sin6_scope_id = 0;
 216     else {
 217         sockaddr_.sin6_scope_id = if_nametoindex(iface.c_str());
 218         if (sockaddr_.sin6_scope_id == 0)
 219             throw InvalidINetAddressException();
 220     }
 221 }
 222
 223 ///////////////////////////////cc.e////////////////////////////////////////
 224 #undef prefix_
 225 //#include "INetAddressing.mpp"
 226
 227 \f
 228 // Local Variables:
 229 // mode: c++
 230 // fill-column: 100
 231 // c-file-style: "senf"
 232 // indent-tabs-mode: nil
 233 // ispell-local-dictionary: "american"
 234 // End: