expect_delete.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <arpa/inet.h>

#include <libnetfilter_conntrack/libnetfilter_conntrack.h>

int main(void)
{
        int ret;
        struct nfct_handle *h;
        struct nf_conntrack *expected;
        struct nf_expect *exp;

        expected = nfct_new();
        if (!expected) {
                perror("nfct_new");
                exit(EXIT_FAILURE);
        }

        nfct_set_attr_u8(expected, ATTR_L3PROTO, AF_INET);
        nfct_set_attr_u32(expected, ATTR_IPV4_SRC, inet_addr("1.1.1.1"));
        nfct_set_attr_u32(expected, ATTR_IPV4_DST, inet_addr("2.2.2.2"));

        nfct_set_attr_u8(expected, ATTR_L4PROTO, IPPROTO_TCP);
        nfct_set_attr_u16(expected, ATTR_PORT_SRC, 0);
        nfct_set_attr_u16(expected, ATTR_PORT_DST, htons(10241));

        exp = nfexp_new();
        if (!exp) {
                perror("nfexp_new");
                nfct_destroy(expected);
                exit(EXIT_FAILURE);
        }

        nfexp_set_attr(exp, ATTR_EXP_EXPECTED, expected);

        h = nfct_open(EXPECT, 0);
        if (!h) {
                perror("nfct_open");
                nfct_destroy(expected);
                return -1;
        }

        ret = nfexp_query(h, NFCT_Q_DESTROY, exp);

        printf("TEST: delete expectation ");
        if (ret == -1)
                printf("(%d)(%s)\n", ret, strerror(errno));
        else
                printf("(OK)\n");

        nfct_close(h);

        nfct_destroy(expected);

        ret == -1 ? exit(EXIT_FAILURE) : exit(EXIT_SUCCESS);
}