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/*
* libipq.h
*
* IPQ library for userspace.
*
* Author: James Morris <jmorris@intercode.com.au>
*
* Copyright (c) 2000-2001 Netfilter Core Team
*
* 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.
*
*/
#ifndef _LIBIPQ_H
#define _LIBIPQ_H
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/uio.h>
#include <asm/types.h>
#include <linux/netlink.h>
#include <linux/netfilter_ipv4/ip_queue.h>
typedef unsigned long ipq_id_t;
#ifdef DEBUG_LIBIPQ
#include <stdio.h>
#define LDEBUG(x...) fprintf(stderr, ## x)
#else
#define LDEBUG(x...)
#endif /* DEBUG_LIBIPQ */
/* FIXME: glibc sucks */
#ifndef MSG_TRUNC
#define MSG_TRUNC 0x20
#endif
struct ipq_handle
{
int fd;
u_int8_t blocking;
struct sockaddr_nl local;
struct sockaddr_nl peer;
};
struct ipq_handle *ipq_create_handle(u_int32_t flags, u_int32_t protocol);
int ipq_destroy_handle(struct ipq_handle *h);
ssize_t ipq_read(const struct ipq_handle *h,
unsigned char *buf, size_t len, int timeout);
int ipq_set_mode(const struct ipq_handle *h, u_int8_t mode, size_t len);
ipq_packet_msg_t *ipq_get_packet(const unsigned char *buf);
int ipq_message_type(const unsigned char *buf);
int ipq_get_msgerr(const unsigned char *buf);
int ipq_set_verdict(const struct ipq_handle *h,
ipq_id_t id,
unsigned int verdict,
size_t data_len,
unsigned char *buf);
int ipq_ctl(const struct ipq_handle *h, int request, ...);
char *ipq_errstr(void);
void ipq_perror(const char *s);
#endif /* _LIBIPQ_H */
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