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/*
* PARSEC - Utility Functions - server
*
* $Author: uberlinuxguy $ - $Date: 2004/09/15 12:26:06 $
*
* Orginally written by:
* Copyright (c) Clemens Beer <cbx@parsec.org> 2001-2002
* Copyright (c) Markus Hadwiger <msh@parsec.org> 1996-2000
*
* 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
*/
// C library
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
// compilation flags/debug support
#include "config.h"
#include "debug.h"
// general definitions
#include "general.h"
#include "objstruc.h"
// network subsystem & server headers
#include "net_defs.h"
#include "e_defs.h"
// network code config
//#include "net_conf.h"
// UNP header
#include "net_wrap.h"
// local module header
#include "net_util.h"
// flags ----------------------------------------------------------------------
//
// copy one node over another -------------------------------------------------
//
void NODE_Copy( node_t* dst, node_t* src )
{
ASSERT( dst != NULL );
ASSERT( src != NULL );
memcpy( dst, src, sizeof( node_t ) );
}
// store port number into node address structure ------------------------------
//
void NODE_StorePort( node_t *node, word port )
{
ASSERT( node != NULL );
node->address[ 4 ] = port >> 8;
node->address[ 5 ] = port & 0xff;
}
// fetch port number from node address structure ------------------------------
//
word NODE_GetPort( node_t *node )
{
ASSERT( node != NULL );
return ( ( (word)node->address[ 4 ] << 8 ) | node->address[ 5 ] );
}
// compare two node addresses (equal, less than, greater than) ----------------
//
int NODE_Compare( node_t *node1, node_t *node2 )
{
byte *ip1 = (byte *) node1;
byte *ip2 = (byte *) node2;
// compare as many digits as necessary
for ( int pos = 0; pos < NODE_ADR_LENGTH; pos++ ) {
if ( ip1[ pos ] < ip2[ pos ] ) {
return NODECMP_LESSTHAN;
} else if ( ip1[ pos ] > ip2[ pos ] ) {
return NODECMP_GREATERTHAN;
}
}
return NODECMP_EQUAL;
}
// compare two node addresses ( fast version ) --------------------------------
//
int NODE_AreSame( node_t *node1, node_t *node2 )
{
return ( memcmp( (void*)node1, (void*)node2, sizeof( node_t ) ) == 0 );
}
// static print area for a node string ----------------------------------------
//
//FIXME: IPv6 ?
static char szNodePrintBuffer[ sizeof "255.255.255.255:65535" ];
// return a STATIC string that contains the node in printable form ------------
//
char* NODE_Print( node_t* node )
{
ASSERT( node != NULL );
// convert IP
char ipstring[ MAX_IPADDR_LEN + 1 ];
inet_ntop( AF_INET, node, ipstring, MAX_IPADDR_LEN + 1 );
//NOTE: this function uses a STATIC string buffer that holds the printable
// form of the node. Do not store the pointer, as it may get overwritten
// by subsequent calls to NODE_Print
sprintf( szNodePrintBuffer, "%s:%d", ipstring, NODE_GetPort( node ) );
return szNodePrintBuffer;
}
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