/***************************************************************************
                          sua_dataname.cpp  -  description
                             -------------------
    begin                : Tue Jan 8 2002
    copyright            : (C) 2002 by Lode Coene
    email                : lode.coene@siemens.atea.be
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/
/*
 *  $Id: sua_dataname.cpp,v 1.2 2002/03/01 12:57:38 p82609 Exp $
 *
 * SUA implementation according to SUA draft issue 6.
 *
 * Author(s): Lode Coene
 *            
 *
 * Copyright (C) 2001 by Siemens Atea, Herentals, Belgium.
 *
 * Realized in co-operation between Siemens Atea and 
 * Siemens AG, Munich, Germany.
 *
 * 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: gery.verwimp@siemens.atea.be
 *          lode.coene@siemens.atea.be
 *
 * The alternative comment
 * inspiration : Vicky
 * "This module reuse some code, thus it will mostly reuse trouble."
 *
 * Purpose: This code-file defines the SUA database access functions for:
 *          SUA Name Object (host names/Global Titles):
 *          - initialise Name
 *          SUA Name List:
 *          - initialise Name List
 *          - read hostname     
 */

#include "sctp.h"

#include "sua_debug.h"
#include "sua_database.h"
#include "sua_asp_mgnt.h"
#include "sua_logging.h"

#include <cstdio>
#include <iostream>
#include <cstdlib>
#include <string>

#include "unistd.h"



using namespace std;

/***********************************************************************/
/* functions of the object class SUA name Object                       */
/***********************************************************************/

/***********************************************************************/
/* Sua_NameObject::initalize                                           */
/***********************************************************************/
void db_Sua_NameObject::initialize(){

  // initialise to point to a invalid SUA association
  SUA_assoc_id = 0;  
}



/***********************************************************************/
/* functions of the object class SUA NameList                          */
/***********************************************************************/

/***********************************************************************/
/* Sua_NameList::initalize                                             */
/***********************************************************************/
void db_Sua_NameList::initialize(){
  short i;
  num_of_instance = 0;
  for (i=0; i < db_MAX_REMOTE_SUA; i++) {
    instance[i].initialize();
  }
}

/***********************************************************************/
/* Sua_NameList::read_host_name                                        */
/***********************************************************************/
string db_Sua_NameList::read_host_name(string name){

  char            *hostname;
  const char      *ip_addr_ptr;
  struct hostent  *hptr;
  char            str[INET6_ADDRSTRLEN];
  char            **pptr;
  string          addr_str;

  hostname = new char[name.length()+1];
  name.copy(hostname,name.length());
  // we are dealing with char arrays, so....
  hostname[name.length()] = '\0';
	
  if ((hptr = gethostbyname(hostname)) == NULL){
    cout << "Determination of hostname failed\n";
    return("127.0.0.1");
  }     
  
#ifdef DEBUG
  cout << "Hostname " << hptr->h_name << " has the following IP address(es)\n";
#endif	

  pptr = hptr->h_addr_list;
  for ( ; *pptr != NULL;pptr++)
    {
      ip_addr_ptr = inet_ntop(hptr->h_addrtype, *pptr, str,sizeof(str));
      addr_str = addr_str + ip_addr_ptr;
      if ((*(pptr+1)) != NULL)
	/* another ip address is comming after the present one */
	addr_str = addr_str + ",";
      /*else this is the last ip address */
#ifdef DEBUG
      cout << ip_addr_ptr << "\n";
#endif	
    }	

#ifdef DEBUG
  cout << "output IP list = " << addr_str << "\n";
#endif
	
  string name_str;
  int last= name.size();
  unsigned int current = name.rfind('.');
  while(current != string::npos){
    name_str = name_str + name.substr(current+1,(last-current)) + ".";
    last= current - 1;
    current = name.rfind('.', last);
  }
  name_str = name_str + name.substr(0,last+1);

#ifdef DEBUG
  cout << "Ready for storing SUA dest hostname = " << name_str << " in NameDB\n"; 
#endif
   
		    
  return(addr_str);

}



// end of module sua_dataname.c