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/* ipv4.c
*
* IPv4 address class. They understand how to take netmasks into consideration
* during equivalence testing.
*
* Gilbert Ramirez <gram@alumni.rice.edu>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include <glib.h>
#include <stdio.h>
#include "ipv4.h"
#include "to_str.h"
#include "addr_and_mask.h"
ipv4_addr_and_mask*
ipv4_addr_and_mask_new(void)
{
ipv4_addr_and_mask *ipv4;
ipv4 = g_new(ipv4_addr_and_mask, 1);
return ipv4;
}
void
ipv4_addr_and_mask_free(ipv4_addr_and_mask *ipv4)
{
g_free(ipv4);
}
void
ipv4_addr_and_mask_set_host_order_addr(ipv4_addr_and_mask *ipv4, const guint32 new_addr)
{
ipv4->addr = new_addr;
}
void
ipv4_addr_and_mask_set_net_order_addr(ipv4_addr_and_mask *ipv4, const guint32 new_addr)
{
ipv4->addr = g_ntohl(new_addr);
}
void
ipv4_addr_and_mask_set_netmask_bits(ipv4_addr_and_mask *ipv4, const guint new_nmask_bits)
{
ipv4->nmask = ip_get_subnet_mask(new_nmask_bits);
}
guint32
ipv4_get_net_order_addr(ipv4_addr_and_mask *ipv4)
{
return g_htonl(ipv4->addr);
}
guint32
ipv4_get_host_order_addr(ipv4_addr_and_mask *ipv4)
{
return ipv4->addr;
}
/* We're assuming the buffer is at least MAX_IP_STR_LEN (16 bytes) */
void
ipv4_addr_and_mask_str_buf(const ipv4_addr_and_mask *ipv4, gchar *buf)
{
guint32 ipv4_host_order = g_htonl(ipv4->addr);
ip_to_str_buf((guint8*)&ipv4_host_order, buf, MAX_IP_STR_LEN);
}
/*
* w.x.y.z/32 eq w.x.y.0/24 TRUE
*/
/* Returns TRUE if equal, FALSE if not */
gboolean
ipv4_addr_and_mask_eq(const ipv4_addr_and_mask *a, const ipv4_addr_and_mask *b)
{
guint32 val_a, val_b, nmask;
nmask = MIN(a->nmask, b->nmask);
val_a = a->addr & nmask;
val_b = b->addr & nmask;
return (val_a == val_b);
}
gboolean
ipv4_addr_and_mask_gt(const ipv4_addr_and_mask *a, const ipv4_addr_and_mask *b)
{
guint32 val_a, val_b, nmask;
nmask = MIN(a->nmask, b->nmask);
val_a = a->addr & nmask;
val_b = b->addr & nmask;
return (val_a > val_b);
}
gboolean
ipv4_addr_and_mask_ge(const ipv4_addr_and_mask *a, const ipv4_addr_and_mask *b)
{
guint32 val_a, val_b, nmask;
nmask = MIN(a->nmask, b->nmask);
val_a = a->addr & nmask;
val_b = b->addr & nmask;
return (val_a >= val_b);
}
gboolean
ipv4_addr_and_mask_lt(const ipv4_addr_and_mask *a, const ipv4_addr_and_mask *b)
{
guint32 val_a, val_b, nmask;
nmask = MIN(a->nmask, b->nmask);
val_a = a->addr & nmask;
val_b = b->addr & nmask;
return (val_a < val_b);
}
gboolean
ipv4_addr_and_mask_le(const ipv4_addr_and_mask *a, const ipv4_addr_and_mask *b)
{
guint32 val_a, val_b, nmask;
nmask = MIN(a->nmask, b->nmask);
val_a = a->addr & nmask;
val_b = b->addr & nmask;
return (val_a <= val_b);
}
/*
* Editor modelines - http://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 8
* tab-width: 8
* indent-tabs-mode: t
* End:
*
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
* :indentSize=8:tabSize=8:noTabs=false:
*/
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