/*
 * IPAddress.h
 *
 * Copyright (C) 2008 Matthias Schiffer <matthias@gamezock.de>
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */

#ifndef MAD_NET_IPADDRESS_H_
#define MAD_NET_IPADDRESS_H_

#include <string>
#include <cstdlib>
#include <arpa/inet.h>
#include "InvalidAddressException.h"

namespace Mad {
namespace Net {

class IPAddress {
  private:
    unsigned int addr;
    unsigned short port;
    struct sockaddr_in sa;

  public:
    // TODO Default port
    IPAddress(unsigned short port0 = 6666) : addr(INADDR_ANY), port(port0) {
      sa.sin_family = AF_INET;
      sa.sin_port = htons(port);
      sa.sin_addr.s_addr = INADDR_ANY;
    }

    IPAddress(unsigned int address, unsigned short port0) : addr(address), port(port0) {
      sa.sin_family = AF_INET;
      sa.sin_port = htons(port);
      sa.sin_addr.s_addr = htonl(addr);
    }

    IPAddress(const std::string &address) throw(InvalidAddressException) {
      std::string ip;
      size_t pos = address.find_first_of(':');

      if(pos == std::string::npos) {
        ip = address;
        // TODO Default port
        port = 6666;
      }
      else {
        ip = address.substr(0, pos);

        char *endptr;
        port = std::strtol(address.substr(pos+1).c_str(), &endptr, 10);
        if(*endptr != 0 || port == 0)
          throw InvalidAddressException(address);
      }

      sa.sin_family = AF_INET;
      sa.sin_port = htons(port);

      if(ip == "*")
        sa.sin_addr.s_addr = INADDR_ANY;
      else if(!inet_pton(AF_INET, ip.c_str(), &sa.sin_addr))
        throw InvalidAddressException(address);

      addr = ntohl(sa.sin_addr.s_addr);
    }

    IPAddress(const std::string &address, unsigned short port0) throw(InvalidAddressException) : port(port0) {
      sa.sin_family = AF_INET;
      sa.sin_port = htons(port);

      if(!inet_pton(AF_INET, address.c_str(), &sa.sin_addr))
        throw InvalidAddressException(address);

      addr = ntohl(sa.sin_addr.s_addr);
    }

    IPAddress(const struct sockaddr_in &address) : sa(address) {
      port = ntohs(sa.sin_port);
      addr = ntohl(sa.sin_addr.s_addr);
    }

    unsigned int getAddress() const {return addr;}
    unsigned short getPort() const {return port;}

    std::string getAddressString() const {
      char buf[INET_ADDRSTRLEN];
      unsigned int address = htonl(addr);

      inet_ntop(AF_INET, &address, buf, sizeof(buf));
      return std::string(buf);
    }

    struct sockaddr* getSockAddr() {return reinterpret_cast<struct sockaddr*>(&sa);}
    socklen_t getSockAddrLength() const {return sizeof(sa);}
};

}
}

#endif /*MAD_NET_IPADDRESS_H_*/