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+// address.cc
+// robert - programme du robot 2005. {{{
+//
+// Copyright (C) 2005 Dufour Jérémy
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+//
+// Contact :
+// Web: %WEB%
+// Email: <dufourj@efrei.fr>
+// }}}
+#include "address.hh"
+
+#include <netdb.h>
+#include <stdexcept>
+
+/// Constructeur par défaut.
+Address::Address (void)
+ : port_ (0)
+{
+ resolv ();
+}
+
+/// Constructeur avec le port (serveur)
+Address::Address (const int port)
+ : port_ (port)
+{
+ resolv ();
+}
+/// Constructeur avec hôte et port.
+Address::Address (const std::string &host, const int port)
+ : host_ (host), port_ (port)
+{
+ resolv ();
+}
+
+/// Constructeur à partir de la strcuture d'adresse.
+Address::Address (const sockaddr *sa, socklen_t sl)
+{
+ // On vérifie que c'est vraiment un struct sockaddr_in
+ if (sl != sizeof (sockaddr_in))
+ throw std::invalid_argument ("Invalide Adresse");
+ sa_ = * reinterpret_cast<const sockaddr_in*> (sa);
+}
+
+/// Résolution de la structure d'adresse depuis l'hôte/port
+void
+Address::resolv (void)
+{
+ // Cas du serveur, pas d'hôte
+ if (host_.empty ())
+ sa_.sin_addr.s_addr = htonl (INADDR_ANY);
+ else
+ {
+ // Convertion de l'hôte en structure adresse
+ if (!inet_pton (AF_INET, host_.c_str (), &sa_.sin_addr))
+ {
+ hostent *host_info = gethostbyname (host_.c_str ());
+ if (!host_info)
+ throw std::runtime_error (host_ + " : Hôte inconnue");
+ }
+ }
+ sa_.sin_family = AF_INET;
+ // Convertion pour le passage sur le réseau
+ sa_.sin_port = htons (port_);
+}
+
+/// Résolution de l'hôte/port depuis la structure d'adresse
+void
+Address::unresolv (void)
+{
+ hostent *host_info;
+ // Recherche de l'hôte
+ host_info = gethostbyaddr (reinterpret_cast<char *> (&(sa_.sin_addr)), sizeof sa_.sin_addr, AF_INET);
+ if (!host_info)
+ host_ = inet_ntoa (sa_.sin_addr);
+ else
+ host_ = host_info->h_name;
+ // Recherche du port
+ port_ = ntohs (sa_.sin_port);
+}