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#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <libnetfilter_conntrack/libnetfilter_conntrack.h>
#include <libnetfilter_conntrack/libnetfilter_conntrack_tcp.h>
int main()
{
int ret;
struct nfct_handle *h;
struct nf_conntrack *ct;
ct = nfct_new();
if (!ct) {
perror("nfct_new");
return 0;
}
nfct_set_attr_u8(ct, ATTR_ORIG_L3PROTO, AF_INET);
nfct_set_attr_u32(ct, ATTR_ORIG_IPV4_SRC, inet_addr("1.1.1.1"));
nfct_set_attr_u32(ct, ATTR_ORIG_IPV4_DST, inet_addr("2.2.2.2"));
nfct_set_attr_u8(ct, ATTR_ORIG_L4PROTO, IPPROTO_TCP);
nfct_set_attr_u16(ct, ATTR_ORIG_PORT_SRC, htons(20));
nfct_set_attr_u16(ct, ATTR_ORIG_PORT_DST, htons(10));
nfct_set_attr_u8(ct, ATTR_REPL_L3PROTO, AF_INET);
nfct_set_attr_u32(ct, ATTR_REPL_IPV4_SRC, inet_addr("2.2.2.2"));
nfct_set_attr_u32(ct, ATTR_REPL_IPV4_DST, inet_addr("1.1.1.1"));
nfct_set_attr_u8(ct, ATTR_REPL_L4PROTO, IPPROTO_TCP);
nfct_set_attr_u16(ct, ATTR_REPL_PORT_SRC, htons(10));
nfct_set_attr_u16(ct, ATTR_REPL_PORT_DST, htons(20));
nfct_set_attr_u8(ct, ATTR_TCP_STATE, TCP_CONNTRACK_LISTEN);
nfct_set_attr_u32(ct, ATTR_TIMEOUT, 100);
nfct_set_attr_u32(ct, ATTR_SNAT_IPV4, inet_addr("8.8.8.8"));
h = nfct_open(CONNTRACK, 0);
if (!h) {
perror("nfct_open");
return -1;
}
ret = nfct_query(h, NFCT_Q_CREATE, ct);
printf("TEST: create conntrack (%d)(%s)\n", ret, strerror(errno));
if (ret == -1)
exit(EXIT_FAILURE);
nfct_close(h);
}
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