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/* ebt_mark_m
*
* Authors:
* Bart De Schuymer <bdschuym@pandora.be>
*
* July, 2002
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <getopt.h>
#include "../include/ebtables_u.h"
#include <linux/netfilter_bridge/ebt_mark_m.h>
#define MARK '1'
static struct option opts[] =
{
{ "mark", required_argument, 0, MARK },
{ 0 }
};
static void print_help()
{
printf(
"mark option:\n"
"--mark [!] [value][/mask]: Match nfmask value (see man page)\n");
}
static void init(struct ebt_entry_match *match)
{
struct ebt_mark_m_info *markinfo = (struct ebt_mark_m_info *)match->data;
markinfo->mark = 0;
markinfo->mask = 0;
markinfo->invert = 0;
markinfo->bitmask = 0;
}
#define OPT_MARK 0x01
static int parse(int c, char **argv, int argc, const struct ebt_u_entry *entry,
unsigned int *flags, struct ebt_entry_match **match)
{
struct ebt_mark_m_info *markinfo = (struct ebt_mark_m_info *)
(*match)->data;
char *end;
switch (c) {
case MARK:
ebt_check_option2(flags, MARK);
if (ebt_check_inverse2(optarg))
markinfo->invert = 1;
markinfo->mark = strtoul(optarg, &end, 0);
markinfo->bitmask = EBT_MARK_AND;
if (*end == '/') {
if (end == optarg)
markinfo->bitmask = EBT_MARK_OR;
markinfo->mask = strtoul(end+1, &end, 0);
} else
markinfo->mask = 0xffffffff;
if ( *end != '\0' || end == optarg)
ebt_print_error2("Bad mark value '%s'", optarg);
break;
default:
return 0;
}
return 1;
}
static void final_check(const struct ebt_u_entry *entry,
const struct ebt_entry_match *match, const char *name,
unsigned int hookmask, unsigned int time)
{
}
static void print(const struct ebt_u_entry *entry,
const struct ebt_entry_match *match)
{
struct ebt_mark_m_info *markinfo =
(struct ebt_mark_m_info *)match->data;
printf("--mark ");
if (markinfo->invert)
printf("! ");
if (markinfo->bitmask == EBT_MARK_OR)
printf("/0x%lx ", markinfo->mask);
else if(markinfo->mask != 0xffffffff)
printf("0x%lx/0x%lx ", markinfo->mark, markinfo->mask);
else
printf("0x%lx ", markinfo->mark);
}
static int compare(const struct ebt_entry_match *m1,
const struct ebt_entry_match *m2)
{
struct ebt_mark_m_info *markinfo1 = (struct ebt_mark_m_info *)m1->data;
struct ebt_mark_m_info *markinfo2 = (struct ebt_mark_m_info *)m2->data;
if (markinfo1->invert != markinfo2->invert)
return 0;
if (markinfo1->mark != markinfo2->mark)
return 0;
if (markinfo1->mask != markinfo2->mask)
return 0;
if (markinfo1->bitmask != markinfo2->bitmask)
return 0;
return 1;
}
static struct ebt_u_match mark_match =
{
.name = EBT_MARK_MATCH,
.size = sizeof(struct ebt_mark_m_info),
.help = print_help,
.init = init,
.parse = parse,
.final_check = final_check,
.print = print,
.compare = compare,
.extra_ops = opts,
};
void _init(void)
{
ebt_register_match(&mark_match);
}
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