Adding upstream version 1.2.6.upstream/1.2.6upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 141 insertions, 0 deletions

diff --git a/examples/nft-map-add.c b/examples/nft-map-add.c
new file mode 100644
index 0000000..e5ce664
--- /dev/null
+++ b/examples/nft-map-add.c
@@ -0,0 +1,141 @@
+/*
+ * (C) 2016 by Pablo Neira Ayuso <pablo@netfilter.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <stdlib.h>
+#include <time.h>
+#include <string.h>
+#include <stddef.h>	/* for offsetof */
+#include <netinet/in.h>
+#include <netinet/ip.h>
+#include <netinet/tcp.h>
+#include <arpa/inet.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <errno.h>
+
+#include <linux/netfilter.h>
+#include <linux/netfilter/nfnetlink.h>
+#include <linux/netfilter/nf_tables.h>
+
+#include <libmnl/libmnl.h>
+#include <libnftnl/set.h>
+
+static struct nftnl_set *setup_set(uint8_t family, const char *table,
+				 const char *name)
+{
+	struct nftnl_set *s = NULL;
+
+	s = nftnl_set_alloc();
+	if (s == NULL) {
+		perror("OOM");
+		exit(EXIT_FAILURE);
+	}
+
+	nftnl_set_set_str(s, NFTNL_SET_TABLE, table);
+	nftnl_set_set_str(s, NFTNL_SET_NAME, name);
+	nftnl_set_set_u32(s, NFTNL_SET_FAMILY, family);
+	nftnl_set_set_u32(s, NFTNL_SET_KEY_LEN, 2);
+	/* See nftables/include/datatype.h, where TYPE_INET_SERVICE is 13. We
+	 * should place these datatypes in a public header so third party
+	 * applications still work with nftables.
+	 */
+	nftnl_set_set_u32(s, NFTNL_SET_KEY_TYPE, 13);
+	nftnl_set_set_u32(s, NFTNL_SET_DATA_LEN, 2);
+	nftnl_set_set_u32(s, NFTNL_SET_DATA_TYPE, 13);
+	nftnl_set_set_u32(s, NFTNL_SET_ID, 1);
+	nftnl_set_set_u32(s, NFTNL_SET_FLAGS, NFT_SET_CONSTANT | NFT_SET_MAP);
+
+	return s;
+}
+
+int main(int argc, char *argv[])
+{
+	struct mnl_socket *nl;
+	struct nftnl_set *s;
+	struct nlmsghdr *nlh;
+	struct mnl_nlmsg_batch *batch;
+	uint8_t family;
+	char buf[MNL_SOCKET_BUFFER_SIZE];
+	uint32_t seq = time(NULL);
+	int ret;
+
+	if (argc != 4) {
+		fprintf(stderr, "Usage: %s <family> <table> <setname>\n", argv[0]);
+		exit(EXIT_FAILURE);
+	}
+
+	if (strcmp(argv[1], "ip") == 0)
+		family = NFPROTO_IPV4;
+	else if (strcmp(argv[1], "ip6") == 0)
+		family = NFPROTO_IPV6;
+	else if (strcmp(argv[1], "inet") == 0)
+		family = NFPROTO_INET;
+	else if (strcmp(argv[1], "bridge") == 0)
+		family = NFPROTO_BRIDGE;
+	else if (strcmp(argv[1], "arp") == 0)
+		family = NFPROTO_ARP;
+	else {
+		fprintf(stderr, "Unknown family: ip, ip6, bridge, arp\n");
+		exit(EXIT_FAILURE);
+	}
+
+	s = setup_set(family, argv[2], argv[3]);
+
+	nl = mnl_socket_open(NETLINK_NETFILTER);
+	if (nl == NULL) {
+		perror("mnl_socket_open");
+		exit(EXIT_FAILURE);
+	}
+
+	if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
+		perror("mnl_socket_bind");
+		exit(EXIT_FAILURE);
+	}
+
+	batch = mnl_nlmsg_batch_start(buf, sizeof(buf));
+
+	nftnl_batch_begin(mnl_nlmsg_batch_current(batch), seq++);
+	mnl_nlmsg_batch_next(batch);
+
+	nlh = nftnl_nlmsg_build_hdr(mnl_nlmsg_batch_current(batch),
+				    NFT_MSG_NEWSET, family,
+				    NLM_F_CREATE | NLM_F_ACK, seq++);
+
+	nftnl_set_nlmsg_build_payload(nlh, s);
+	nftnl_set_free(s);
+	mnl_nlmsg_batch_next(batch);
+
+	nftnl_batch_end(mnl_nlmsg_batch_current(batch), seq++);
+	mnl_nlmsg_batch_next(batch);
+
+	ret = mnl_socket_sendto(nl, mnl_nlmsg_batch_head(batch),
+				mnl_nlmsg_batch_size(batch));
+	if (ret == -1) {
+		perror("mnl_socket_sendto");
+		exit(EXIT_FAILURE);
+	}
+
+	mnl_nlmsg_batch_stop(batch);
+
+	ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+	if (ret == -1) {
+		perror("mnl_socket_recvfrom");
+		exit(EXIT_FAILURE);
+	}
+
+	ret = mnl_cb_run(buf, ret, 0, mnl_socket_get_portid(nl), NULL, NULL);
+	if (ret < 0) {
+		perror("mnl_cb_run");
+		exit(EXIT_FAILURE);
+	}
+
+	mnl_socket_close(nl);
+
+	return EXIT_SUCCESS;
+}