From: Álvaro Neira Ayuso <alvaroneay@xxxxxxxxx>
Signed-off-by: Alvaro Neira Ayuso <alvaroneay@xxxxxxxxx>
---
examples/Makefile.am | 4 +
examples/nft-rule-json-add.c | 117 ++++++++++++++++++++++++++++++++++++++++++
2 files changed, 121 insertions(+)
create mode 100644 examples/nft-rule-json-add.c
diff --git a/examples/Makefile.am b/examples/Makefile.am
index 8d76f00..639aafb 100644
--- a/examples/Makefile.am
+++ b/examples/Makefile.am
@@ -14,6 +14,7 @@ check_PROGRAMS = nft-table-add \
nft-rule-add \
nft-rule-insert \
nft-rule-xml-add \
+ nft-rule-json-add \
nft-rule-del \
nft-rule-get \
nft-events \
@@ -67,6 +68,9 @@ nft_rule_insert_LDADD = ../src/libnftables.la ${LIBMNL_LIBS} ${LIBXML_LIBS}
nft_rule_xml_add_SOURCES = nft-rule-xml-add.c
nft_rule_xml_add_LDADD = ../src/libnftables.la ${LIBMNL_LIBS}
+nft_rule_json_add_SOURCES = nft-rule-json-add.c
+nft_rule_json_add_LDADD = ../src/libnftables.la ${LIBMNL_LIBS}
+
nft_rule_del_SOURCES = nft-rule-del.c
nft_rule_del_LDADD = ../src/libnftables.la ${LIBMNL_LIBS}
diff --git a/examples/nft-rule-json-add.c b/examples/nft-rule-json-add.c
new file mode 100644
index 0000000..bf56b89
--- /dev/null
+++ b/examples/nft-rule-json-add.c
@@ -0,0 +1,117 @@
+/*
+ * (C) 2013 by Álvaro Neira Ayuso <alvaroneay@xxxxxxxxx>
+ *
+ * Based on nft-rule-xml-add from:
+ *
+ * (C) 2013 by Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
+ * (C) 2013 by Arturo Borrero Gonzalez <arturo.borrero.glez@xxxxxxxxx>
+ *
+ * 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 <arpa/inet.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/rule.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_rule *r = NULL;
+ int ret, fd;
+ uint8_t family;
+ char json[4096];
+ char reprint[4096];
+
+ if (argc < 2) {
+ printf("Usage: %s <json-file>\n", argv[0]);
+ 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);
+
+ r = nft_rule_alloc();
+ if (r == NULL) {
+ perror("OOM");
+ exit(EXIT_FAILURE);
+ }
+
+ if (nft_rule_parse(r, NFT_RULE_PARSE_JSON, json) < 0) {
+ printf("E: Unable to parse JSON file: %s\n", strerror(errno));
+ exit(EXIT_FAILURE);
+ }
+
+ nft_rule_snprintf(reprint, sizeof(reprint), r, NFT_RULE_O_JSON, 0);
+ printf("Parsed:\n%s\n", reprint);
+
+ nft_rule_attr_unset(r, NFT_RULE_ATTR_HANDLE);
+ family = nft_rule_attr_get_u8(r, NFT_RULE_ATTR_FAMILY);
+
+ seq = time(NULL);
+ nlh = nft_rule_nlmsg_build_hdr(buf, NFT_MSG_NEWRULE, family,
+ NLM_F_CREATE|NLM_F_APPEND|NLM_F_ACK,
+ seq);
+ nft_rule_nlmsg_build_payload(nlh, r);
+ nft_rule_free(r);
+
+ 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;
+}
--
To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
