conntrack_dump.c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <libnetfilter_conntrack/libnetfilter_conntrack.h>
static int cb(enum nf_conntrack_msg_type type,
struct nf_conntrack *ct,
void *data)
{
char buf[1024];
nfct_snprintf(buf, sizeof(buf), ct, NFCT_T_UNKNOWN, NFCT_O_DEFAULT, NFCT_OF_SHOW_LAYER3 | NFCT_OF_TIMESTAMP);
printf("%s\n", buf);
return NFCT_CB_CONTINUE;
}
int main(void)
{
int ret;
uint32_t family = AF_INET;
struct nfct_handle *h;
h = nfct_open(CONNTRACK, 0);
if (!h) {
perror("nfct_open");
return -1;
}
nfct_callback_register(h, NFCT_T_ALL, cb, NULL);
ret = nfct_query(h, NFCT_Q_DUMP, &family);
printf("TEST: get conntrack ");
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_callback_register
int nfct_callback_register(struct nfct_handle *h, enum nf_conntrack_msg_type type, int(*cb)(enum nf_conntrack_msg_type type, struct nf_conntrack *ct, void *data), void *data)
Definition conntrack/api.c:224
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
nfct_query
int nfct_query(struct nfct_handle *h, const enum nf_conntrack_query query, const void *data)
Definition conntrack/api.c:991
nfct_snprintf
int nfct_snprintf(char *buf, unsigned int size, const struct nf_conntrack *ct, const unsigned int msg_type, const unsigned int out_type, const unsigned int out_flags)
Definition conntrack/api.c:1113