expect_events.c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <libnetfilter_conntrack/libnetfilter_conntrack.h>
static int event_cb(enum nf_conntrack_msg_type type,
struct nf_expect *exp,
void *data)
{
static int n = 0;
char buf[1024];
nfexp_snprintf(buf, 1024, exp, type, NFCT_O_XML, 0);
printf("%s\n", buf);
if (++n == 10)
return NFCT_CB_STOP;
return NFCT_CB_CONTINUE;
}
int main(void)
{
int ret;
struct nfct_handle *h;
h = nfct_open(EXPECT, NF_NETLINK_CONNTRACK_EXP_NEW |
NF_NETLINK_CONNTRACK_EXP_UPDATE |
NF_NETLINK_CONNTRACK_EXP_DESTROY);
if (!h) {
perror("nfct_open");
return -1;
}
nfexp_callback_register(h, NFCT_T_ALL, event_cb, NULL);
printf("TEST: waiting for 10 expectation events...\n");
ret = nfexp_catch(h);
printf("TEST: expectation events ");
if (ret == -1)
printf("(%d)(%s)\n", ret, strerror(errno));
else
printf("(OK)\n");
nfct_close(h);
ret == -1 ? exit(EXIT_FAILURE) : exit(EXIT_SUCCESS);
}
nfct_open
struct nfct_handle * nfct_open(uint8_t, unsigned)
Definition main.c:84
nfct_close
int nfct_close(struct nfct_handle *cth)
Definition main.c:105
nfexp_callback_register
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
nfexp_catch
int nfexp_catch(struct nfct_handle *h)
Definition expect/api.c:760
nfexp_snprintf
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