/*

 * 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);

}