#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <arpa/inet.h>
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#include <libnetfilter_conntrack/libnetfilter_conntrack.h>
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#include <libnetfilter_conntrack/libnetfilter_conntrack_tcp.h>
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int main(void)
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{
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int ret;
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struct nfct_handle *h;
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struct nf_conntrack *ct;
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ct = nfct_new();
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if (!ct) {
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perror("nfct_new");
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return 0;
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}
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struct nfct_attr_grp_ipv4 grp_ipv4 = {
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.src = inet_addr("1.1.1.1"),
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.dst = inet_addr("2.2.2.2")
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};
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nfct_set_attr_grp(ct, ATTR_GRP_ORIG_IPV4, &grp_ipv4);
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struct nfct_attr_grp_port grp_port = {
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.sport = htons(20),
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.dport = htons(10)
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};
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nfct_set_attr_grp(ct, ATTR_GRP_ORIG_PORT, &grp_port);
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nfct_set_attr_u8(ct, ATTR_L4PROTO, IPPROTO_TCP);
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nfct_setobjopt(ct, NFCT_SOPT_SETUP_REPLY);
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nfct_set_attr_u8(ct, ATTR_TCP_STATE, TCP_CONNTRACK_SYN_SENT);
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nfct_set_attr_u32(ct, ATTR_TIMEOUT, 100);
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nfct_set_attr(ct, ATTR_HELPER_NAME, "ftp");
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h = nfct_open(CONNTRACK, 0);
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if (!h) {
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perror("nfct_open");
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nfct_destroy(ct);
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return -1;
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}
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ret = nfct_query(h, NFCT_Q_CREATE, ct);
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printf("TEST: create conntrack ");
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if (ret == -1)
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printf("(%d)(%s)\n", ret, strerror(errno));
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else
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printf("(OK)\n");
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nfct_close(h);
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nfct_destroy(ct);
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ret == -1 ? exit(EXIT_FAILURE) : exit(EXIT_SUCCESS);
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}
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