examples: Add nft-set-json-add

Signed-off-by: Alvaro Neira Ayuso <alvaroneay@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/examples/Makefile.am b/examples/Makefile.am
index 639aafb633b4f623785ddaf065bc254546ce8f27..9965387ac5bef4a01987749dbb36fe293f2e5aa7 100644 (file)
--- a/examples/Makefile.am
+++ b/examples/Makefile.am
@@ -19,6 +19,7 @@ check_PROGRAMS = nft-table-add                \
                 nft-rule-get           \
                 nft-events             \
                 nft-set-add            \
+                nft-set-json-add       \
                 nft-set-get            \
                 nft-set-del            \
                 nft-set-elem-add       \
@@ -83,6 +84,9 @@ nft_events_LDADD = ../src/libnftables.la ${LIBMNL_LIBS}
 nft_set_add_SOURCES = nft-set-add.c
 nft_set_add_LDADD = ../src/libnftables.la ${LIBMNL_LIBS}
 
+nft_set_json_add_SOURCES = nft-set-json-add.c
+nft_set_json_add_LDADD = ../src/libnftables.la ${LIBMNL_LIBS}
+
 nft_set_del_SOURCES = nft-set-del.c
 nft_set_del_LDADD = ../src/libnftables.la ${LIBMNL_LIBS}
 

diff --git a/examples/nft-set-json-add.c b/examples/nft-set-json-add.c
new file mode 100644 (file)
index 0000000..33c3acd
--- /dev/null
+++ b/examples/nft-set-json-add.c
@@ -0,0 +1,116 @@
+/*
+ * (C) 2013 by Álvaro Neira Ayuso <alvaroneay@gmail.com>
+ *
+ * Based on nft-set-xml-add from:
+ *
+ * (C) 2013 by Pablo Neira Ayuso <pablo@netfilter.org>
+ * (C) 2013 by Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com>
+ *
+ * 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 <netinet/in.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include <linux/netfilter.h>
+#include <linux/netfilter/nf_tables.h>
+
+#include <libmnl/libmnl.h>
+#include <libnftables/set.h>
+
+int main(int argc, char *argv[])
+{
+       struct mnl_socket *nl;
+       char buf[MNL_SOCKET_BUFFER_SIZE];
+       struct nlmsghdr *nlh;
+       uint32_t portid, seq;
+       struct nft_set *s;
+       int ret, fd;
+       uint16_t family;
+       char json[4096];
+       char reprint[4096];
+
+       if (argc < 2) {
+               printf("Usage: %s <json-file>\n", argv[0]);
+               exit(EXIT_FAILURE);
+       }
+
+       s = nft_set_alloc();
+       if (s == NULL) {
+               perror("OOM");
+               exit(EXIT_FAILURE);
+       }
+
+       fd = open(argv[1], O_RDONLY);
+       if (fd < 0) {
+               perror("open");
+               exit(EXIT_FAILURE);
+       }
+
+       if (read(fd, json, sizeof(json)) < 0) {
+               perror("read");
+               close(fd);
+               exit(EXIT_FAILURE);
+       }
+
+       close(fd);
+
+       if (nft_set_parse(s, NFT_SET_PARSE_JSON, json) < 0) {
+               printf("E: Unable to parse JSON file: %s\n", strerror(errno));
+               exit(EXIT_FAILURE);
+       }
+
+       nft_set_snprintf(reprint, sizeof(reprint), s, NFT_SET_O_JSON, 0);
+       printf("Parsed:\n%s\n", reprint);
+
+       family = nft_set_attr_get_u32(s, NFT_SET_ATTR_FAMILY);
+
+       seq = time(NULL);
+
+       nlh = nft_set_nlmsg_build_hdr(buf, NFT_MSG_NEWSET, family,
+                                       NLM_F_CREATE|NLM_F_ACK, seq);
+       nft_set_nlmsg_build_payload(nlh, s);
+       nft_set_free(s);
+
+       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);
+       }
+       portid = mnl_socket_get_portid(nl);
+
+       if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
+               perror("mnl_socket_send");
+               exit(EXIT_FAILURE);
+       }
+
+       ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+       while (ret > 0) {
+               ret = mnl_cb_run(buf, ret, seq, portid, NULL, NULL);
+               if (ret <= 0)
+                       break;
+               ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+       }
+       if (ret == -1) {
+               perror("error");
+               exit(EXIT_FAILURE);
+       }
+
+       mnl_socket_close(nl);
+
+       return EXIT_SUCCESS;
+}