libnetfilter_conntrack  1.0.6
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 
9 static 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 
21 int 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 }
void nfexp_set_attr(struct nf_expect *exp, const enum nf_expect_attr type, const void *value)
Definition: expect/api.c:308
void nfct_set_attr_u32(struct nf_conntrack *ct, const enum nf_conntrack_attr type, uint32_t value)
int nfct_close(struct nfct_handle *cth)
Definition: main.c:105
int nfexp_query(struct nfct_handle *h, const enum nf_conntrack_query qt, const void *data)
Definition: expect/api.c:668
void nfct_destroy(struct nf_conntrack *ct)
Definition: conntrack/api.c:92
struct nf_expect * nfexp_new(void)
Definition: expect/api.c:28
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:774
void nfct_set_attr_u16(struct nf_conntrack *ct, const enum nf_conntrack_attr type, uint16_t value)
struct nf_conntrack * nfct_new(void)
Definition: conntrack/api.c:75
void nfct_set_attr_u8(struct nf_conntrack *ct, const enum nf_conntrack_attr type, uint8_t value)
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:157
struct nfct_handle * nfct_open(uint8_t, unsigned)
Definition: main.c:84