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/*
* Shared library add-on to iptables to add CONNSECMARK target support.
*
* Based on the MARK and CONNMARK targets.
*
* Copyright (C) 2006 Red Hat, Inc., James Morris <jmorris@redhat.com>
*/
#include <stdio.h>
#include <xtables.h>
#include <linux/netfilter/xt_CONNSECMARK.h>
#define PFX "CONNSECMARK target: "
enum {
O_SAVE = 0,
O_RESTORE,
F_SAVE = 1 << O_SAVE,
F_RESTORE = 1 << O_RESTORE,
};
static void CONNSECMARK_help(void)
{
printf(
"CONNSECMARK target options:\n"
" --save Copy security mark from packet to conntrack\n"
" --restore Copy security mark from connection to packet\n");
}
static const struct xt_option_entry CONNSECMARK_opts[] = {
{.name = "save", .id = O_SAVE, .excl = F_RESTORE, .type = XTTYPE_NONE},
{.name = "restore", .id = O_RESTORE, .excl = F_SAVE,
.type = XTTYPE_NONE},
XTOPT_TABLEEND,
};
static void CONNSECMARK_parse(struct xt_option_call *cb)
{
struct xt_connsecmark_target_info *info = cb->data;
xtables_option_parse(cb);
switch (cb->entry->id) {
case O_SAVE:
info->mode = CONNSECMARK_SAVE;
break;
case O_RESTORE:
info->mode = CONNSECMARK_RESTORE;
break;
}
}
static void CONNSECMARK_check(struct xt_fcheck_call *cb)
{
if (cb->xflags == 0)
xtables_error(PARAMETER_PROBLEM, PFX "parameter required");
}
static void print_connsecmark(const struct xt_connsecmark_target_info *info)
{
switch (info->mode) {
case CONNSECMARK_SAVE:
printf("save");
break;
case CONNSECMARK_RESTORE:
printf("restore");
break;
default:
xtables_error(OTHER_PROBLEM, PFX "invalid mode %hhu\n", info->mode);
}
}
static void
CONNSECMARK_print(const void *ip, const struct xt_entry_target *target,
int numeric)
{
const struct xt_connsecmark_target_info *info =
(struct xt_connsecmark_target_info*)(target)->data;
printf(" CONNSECMARK ");
print_connsecmark(info);
}
static void
CONNSECMARK_save(const void *ip, const struct xt_entry_target *target)
{
const struct xt_connsecmark_target_info *info =
(struct xt_connsecmark_target_info*)target->data;
printf(" --");
print_connsecmark(info);
}
static struct xtables_target connsecmark_target = {
.family = NFPROTO_UNSPEC,
.name = "CONNSECMARK",
.version = XTABLES_VERSION,
.revision = 0,
.size = XT_ALIGN(sizeof(struct xt_connsecmark_target_info)),
.userspacesize = XT_ALIGN(sizeof(struct xt_connsecmark_target_info)),
.help = CONNSECMARK_help,
.print = CONNSECMARK_print,
.save = CONNSECMARK_save,
.x6_parse = CONNSECMARK_parse,
.x6_fcheck = CONNSECMARK_check,
.x6_options = CONNSECMARK_opts,
};
void _init(void)
{
xtables_register_target(&connsecmark_target);
}
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