1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/*
* libipq.h
*
* IPQ library for userspace.
*
* 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>
#ifdef KERNEL_64_USERSPACE_32
#include "ip_queue_64.h"
typedef u_int64_t ipq_id_t;
#else
#include <linux/netfilter_ipv4/ip_queue.h>
typedef u_int32_t ipq_id_t;
#endif
#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);
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, ...);
void ipq_perror(const char *s);
#endif /* _LIBIPQ_H */
|
