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/*
* Authors:
* (C) 2013 by Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
* (C) 2012 by Pablo Neira Ayuso <pablo@netfilter.org>
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef _NFT_SHARED_H_
#define _NFT_SHARED_H_
#include <stdbool.h>
#include <libnftables/rule.h>
#include <libnftables/expr.h>
#include "xshared.h"
#if 0
#define DEBUGP(x, args...) fprintf(stdout, x, ## args)
#define NLDEBUG
#define DEBUG_DEL
#else
#define DEBUGP(x, args...)
#endif
/*
* iptables print output emulation
*/
#define FMT_NUMERIC 0x0001
#define FMT_NOCOUNTS 0x0002
#define FMT_KILOMEGAGIGA 0x0004
#define FMT_OPTIONS 0x0008
#define FMT_NOTABLE 0x0010
#define FMT_NOTARGET 0x0020
#define FMT_VIA 0x0040
#define FMT_NONEWLINE 0x0080
#define FMT_LINENUMBERS 0x0100
#define FMT_PRINT_RULE (FMT_NOCOUNTS | FMT_OPTIONS | FMT_VIA \
| FMT_NUMERIC | FMT_NOTABLE)
#define FMT(tab,notab) ((format) & FMT_NOTABLE ? (notab) : (tab))
struct nft_family_ops {
int (*add)(struct nft_rule *r, struct iptables_command_state *cs);
bool (*is_same)(const struct iptables_command_state *a,
const struct iptables_command_state *b);
void (*print_payload)(struct nft_rule_expr *e,
struct nft_rule_expr_iter *iter);
void (*parse_meta)(struct nft_rule_expr *e, uint8_t key,
struct iptables_command_state *cs);
void (*parse_payload)(struct nft_rule_expr_iter *iter,
struct iptables_command_state *cs,
uint32_t offset);
void (*parse_immediate)(struct iptables_command_state *cs);
uint8_t (*print_firewall)(const struct iptables_command_state *cs,
const char *targname, unsigned int num,
unsigned int format);
};
void add_meta(struct nft_rule *r, uint32_t key);
void add_payload(struct nft_rule *r, int offset, int len);
void add_bitwise_u16(struct nft_rule *r, int mask, int xor);
void add_cmp_ptr(struct nft_rule *r, uint32_t op, void *data, size_t len);
void add_cmp_u16(struct nft_rule *r, uint16_t val, uint32_t op);
void add_cmp_u32(struct nft_rule *r, uint32_t val, uint32_t op);
void add_iniface(struct nft_rule *r, char *iface, int invflags);
void add_outiface(struct nft_rule *r, char *iface, int invflags);
void add_addr(struct nft_rule *r, int offset,
void *data, size_t len, int invflags);
void add_proto(struct nft_rule *r, int offset, size_t len,
uint32_t proto, int invflags);
bool is_same_interfaces(const char *a_iniface, const char *a_outiface,
unsigned const char *a_iniface_mask,
unsigned const char *a_outiface_mask,
const char *b_iniface, const char *b_outiface,
unsigned const char *b_iniface_mask,
unsigned const char *b_outiface_mask);
void parse_meta(struct nft_rule_expr *e, uint8_t key, char *iniface,
unsigned char *iniface_mask, char *outiface,
unsigned char *outiface_mask, uint8_t *invflags);
void print_proto(uint16_t proto, int invert);
void get_cmp_data(struct nft_rule_expr_iter *iter,
void *data, size_t dlen, bool *inv);
void print_num(uint64_t number, unsigned int format);
void print_firewall_details(const struct iptables_command_state *cs,
const char *targname, uint8_t flags,
uint8_t invflags, uint8_t proto,
const char *iniface, const char *outiface,
unsigned int num, unsigned int format);
struct nft_family_ops *nft_family_ops_lookup(int family);
#endif
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