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/* libnfqnetlink.h: Header file for the Netfilter Queue library.
*
* (C) 2005 by Harald Welte <laforge@gnumonks.org>
*
*
* Changelog :
* (2005/08/11) added parsing function (Eric Leblond <regit@inl.fr>)
*
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*/
#ifndef __LIBCTNETLINK_H
#define __LIBCTNETLINK_H
#include <libnfnetlink/libnfnetlink.h>
#include <linux/netfilter/nfnetlink.h>
#include <linux/netfilter/nfnetlink_queue.h>
struct nfqnl_handle;
struct nfqnl_q_handle;
extern int nfqnl_errno;
extern struct nfnl_handle *nfqnl_nfnlh(struct nfqnl_handle *h);
extern int nfqnl_fd(struct nfqnl_handle *h);
typedef int nfqnl_callback(struct nfqnl_q_handle *gh, struct nfgenmsg *nfmsg,
struct nfattr *nfa[], void *data);
extern struct nfqnl_handle *nfqnl_open(void);
extern int nfqnl_close(struct nfqnl_handle *h);
extern int nfqnl_bind_pf(struct nfqnl_handle *h, u_int16_t pf);
extern int nfqnl_unbind_pf(struct nfqnl_handle *h, u_int16_t pf);
extern struct nfqnl_q_handle *nfqnl_create_queue(struct nfqnl_handle *h,
u_int16_t num,
nfqnl_callback *cb,
void *data);
extern int nfqnl_destroy_queue(struct nfqnl_q_handle *qh);
extern int nfqnl_handle_packet(struct nfqnl_handle *h, char *buf, int len);
extern int nfqnl_set_mode(struct nfqnl_q_handle *qh,
u_int8_t mode, unsigned int len);
extern int nfqnl_set_verdict(struct nfqnl_q_handle *qh,
u_int32_t id,
u_int32_t verdict,
u_int32_t data_len,
unsigned char *buf);
extern int nfqnl_set_verdict_mark(struct nfqnl_q_handle *qh,
u_int32_t id,
u_int32_t verdict,
u_int32_t mark,
u_int32_t datalen,
unsigned char *buf);
/* message parsing function */
extern struct nfqnl_msg_packet_hdr *
nfqnl_get_msg_packet_hdr(struct nfattr *nfa[]);
extern u_int32_t nfqnl_get_nfmark(struct nfattr *nfa[]);
extern struct nfqnl_msg_packet_timestamp *
nfqnl_get_timestamp(struct nfattr *nfa[]);
/* return 0 if not set */
extern u_int32_t nfqnl_get_indev(struct nfattr *nfa[]);
extern u_int32_t nfqnl_get_physindev(struct nfattr *nfa[]);
extern u_int32_t nfqnl_get_outdev(struct nfattr *nfa[]);
extern u_int32_t nfqnl_get_physoutdev(struct nfattr *nfa[]);
extern struct nfqnl_msg_packet_hw *nfqnl_get_packet_hw(struct nfattr *nfa[]);
/* return 0 if problem */
extern int nfqnl_get_payload(struct nfattr *nfa[],
char ** data, unsigned int* datalen);
#endif /* __LIBNFQNETLINK_H */
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