/*
 * Copyright (c) 2004 Teodor Sigaev <teodor@sigaev.ru>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the author nor the names of any co-contributors
 *      may be used to endorse or promote products derived from this software
 *      without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY CONTRIBUTORS ``AS IS'' AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#include <stdlib.h>
#include <string.h>

#include "tlog.h"
#include "connection.h"
#include "top.h"
#include "tmalloc.h"


MassiveUnit*
allocUnits(int n ) {
	MassiveUnit *ptr = NULL;

	ptr = (MassiveUnit*)tmalloc( MUHDRSZ + n * sizeof(UnitInfo) );
	ptr->maxnumber = n;
	ptr->number=0;

	return ptr;
}

static int
cmpUnit(const void *a, const void *b) {
	if ( ((UnitInfo*)a)->ip.s_addr == ((UnitInfo*)b)->ip.s_addr )
		return 0;
	return ( ((UnitInfo*)a)->ip.s_addr > ((UnitInfo*)b)->ip.s_addr ) ? 1 : -1;
}

void
fillUnit( MassiveUnit* mu, UnitInfo *unit ) {
	if ( mu->number==0 || ( mu->number==1 && unit->ip.s_addr == mu->units->ip.s_addr ) ) {
		memcpy( mu->units, unit, sizeof(UnitInfo) );
		mu->number=1;
	} else {
		UnitInfo *ptr = bsearch(unit, mu->units, mu->number, sizeof(UnitInfo), cmpUnit);
		if ( ptr ) 
			memcpy( ptr, unit, sizeof(UnitInfo) );
		else {
			if ( mu->number == mu->maxnumber )
				tlog(TL_ALARM, "Can't add new unit");
			else {
				ptr = mu->units + mu->number;
				memcpy( ptr, unit, sizeof(UnitInfo) );
				mu->number++;
				qsort(mu->units, mu->number, sizeof(UnitInfo), cmpUnit);
			} 
		}
	}
}