1 files changed, 70 insertions, 0 deletions
diff --git a/utils/conntrack_dump_filter_tuple.c b/utils/conntrack_dump_filter_tuple.c
new file mode 100644
index 0000000..44633da
--- /dev/null
+++ b/utils/conntrack_dump_filter_tuple.c
@@ -0,0 +1,70 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <arpa/inet.h>
+
+#include <libnetfilter_conntrack/libnetfilter_conntrack.h>
+
+static int cb(const struct nlmsghdr *nlh,
+	      enum nf_conntrack_msg_type type,
+	      struct nf_conntrack *ct,
+	      void *data)
+{
+	char buf[1024];
+
+	if (!(nlh->nlmsg_flags & NLM_F_DUMP_FILTERED))
+	  {
+	    fprintf(stderr, "No filtering in kernel, do filtering in userspace\n");
+	    return NFCT_CB_FAILURE;
+	  }
+
+	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;
+	struct nfct_handle *h;
+
+	h = nfct_open(CONNTRACK, 0);
+	if (!h) {
+		perror("nfct_open");
+		return -1;
+	}
+	struct nfct_filter_dump *filter_dump = nfct_filter_dump_create();
+	if (filter_dump == NULL) {
+		perror("nfct_filter_dump_alloc");
+		return -1;
+	}
+
+	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_u8(ct, ATTR_L4PROTO, IPPROTO_ICMP);
+	nfct_set_attr_u32(ct, ATTR_ORIG_IPV4_DST, inet_addr("203.0.113.55"));
+	nfct_filter_dump_set_attr(filter_dump, NFCT_FILTER_DUMP_TUPLE, ct);
+
+	nfct_callback_register2(h, NFCT_T_ALL, cb, NULL);
+	ret = nfct_query(h, NFCT_Q_DUMP_FILTER, filter_dump);
+
+	nfct_filter_dump_destroy(filter_dump);
+
+	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);
+}