libnetfilter_conntrack 1.0.9
expect_get.c
1#include <stdio.h>
2#include <stdlib.h>
3#include <string.h>
4#include <errno.h>
5#include <arpa/inet.h>
6
7#include <libnetfilter_conntrack/libnetfilter_conntrack.h>
8
9static int cb(enum nf_conntrack_msg_type type,
10 struct nf_expect *exp,
11 void *data)
12{
13 char buf[1024];
14
15 nfexp_snprintf(buf, 1024, exp, NFCT_T_UNKNOWN, NFCT_O_DEFAULT, 0);
16 printf("%s\n", buf);
17
18 return NFCT_CB_CONTINUE;
19}
20
21int main(void)
22{
23 int ret;
24 struct nfct_handle *h;
25 struct nf_conntrack *master;
26 struct nf_expect *exp;
27
28 master = nfct_new();
29 if (!master) {
30 perror("nfct_new");
31 exit(EXIT_FAILURE);
32 }
33
34 nfct_set_attr_u8(master, ATTR_L3PROTO, AF_INET);
35 nfct_set_attr_u32(master, ATTR_IPV4_SRC, inet_addr("1.1.1.1"));
36 nfct_set_attr_u32(master, ATTR_IPV4_DST, inet_addr("2.2.2.2"));
37
38 nfct_set_attr_u8(master, ATTR_L4PROTO, IPPROTO_TCP);
39 nfct_set_attr_u16(master, ATTR_PORT_SRC, htons(10240));
40 nfct_set_attr_u16(master, ATTR_PORT_DST, htons(10241));
41
42 exp = nfexp_new();
43 if (!exp) {
44 perror("nfexp_new");
45 nfct_destroy(master);
46 exit(EXIT_FAILURE);
47 }
48
49 nfexp_set_attr(exp, ATTR_EXP_MASTER, master);
50
51 h = nfct_open(EXPECT, 0);
52 if (!h) {
53 perror("nfct_open");
54 nfct_destroy(master);
55 return -1;
56 }
57
58 nfexp_callback_register(h, NFCT_T_ALL, cb, NULL);
59 ret = nfexp_query(h, NFCT_Q_GET, exp);
60
61 printf("TEST: get expectation ");
62 if (ret == -1)
63 printf("(%d)(%s)\n", ret, strerror(errno));
64 else
65 printf("(OK)\n");
66
67 nfct_close(h);
68
69 nfct_destroy(master);
70
71 ret == -1 ? exit(EXIT_FAILURE) : exit(EXIT_SUCCESS);
72}
struct nfct_handle * nfct_open(uint8_t, unsigned)
Definition: main.c:84
int nfct_close(struct nfct_handle *cth)
Definition: main.c:105
int nfexp_callback_register(struct nfct_handle *h, enum nf_conntrack_msg_type type, int(*cb)(enum nf_conntrack_msg_type type, struct nf_expect *exp, void *data), void *data)
Definition: expect/api.c:158
int nfexp_query(struct nfct_handle *h, const enum nf_conntrack_query qt, const void *data)
Definition: expect/api.c:695
void nfct_set_attr_u32(struct nf_conntrack *ct, const enum nf_conntrack_attr type, uint32_t value)
void nfct_destroy(struct nf_conntrack *ct)
Definition: conntrack/api.c:93
void nfct_set_attr_u16(struct nf_conntrack *ct, const enum nf_conntrack_attr type, uint16_t value)
void nfct_set_attr_u8(struct nf_conntrack *ct, const enum nf_conntrack_attr type, uint8_t value)
struct nf_conntrack * nfct_new(void)
Definition: conntrack/api.c:76
struct nf_expect * nfexp_new(void)
Definition: expect/api.c:29
void nfexp_set_attr(struct nf_expect *exp, const enum nf_expect_attr type, const void *value)
Definition: expect/api.c:309
int nfexp_snprintf(char *buf, unsigned int size, const struct nf_expect *exp, const unsigned int msg_type, const unsigned int out_type, const unsigned int out_flags)
Definition: expect/api.c:802