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authorAlvaro Neira Ayuso <alvaroneay@gmail.com>2013-06-06 23:14:16 +0000
committerPablo Neira Ayuso <pablo@netfilter.org>2013-06-07 13:54:17 +0200
commit2f1e7122841d00b3c0134ab9ee19e6ce02a9bd5c (patch)
tree4a863ad59e6d7065c6a8601108153715a0287d79
parentcf4f500f828ccc8720a19c211bc9ffc478c1463a (diff)
table: add function to export tables in JSON format
Signed-off-by: Alvaro Neira <alvaroneay@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
-rw-r--r--include/libnftables/table.h1
-rw-r--r--src/internal.h1
-rw-r--r--src/table.c18
3 files changed, 20 insertions, 0 deletions
diff --git a/include/libnftables/table.h b/include/libnftables/table.h
index 658230c..19f322c 100644
--- a/include/libnftables/table.h
+++ b/include/libnftables/table.h
@@ -31,6 +31,7 @@ void nft_table_nlmsg_build_payload(struct nlmsghdr *nlh, const struct nft_table
enum {
NFT_TABLE_O_DEFAULT = 0,
NFT_TABLE_O_XML,
+ NFT_TABLE_O_JSON,
};
enum nft_table_parse_type {
diff --git a/src/internal.h b/src/internal.h
index 3ad5e89..0c5de21 100644
--- a/src/internal.h
+++ b/src/internal.h
@@ -20,6 +20,7 @@
#define NFT_TABLE_XML_VERSION 0
#define NFT_CHAIN_XML_VERSION 0
#define NFT_RULE_XML_VERSION 0
+#define NFT_TABLE_JSON_VERSION 0
struct expr_ops;
diff --git a/src/table.c b/src/table.c
index a868da4..de106bb 100644
--- a/src/table.c
+++ b/src/table.c
@@ -300,6 +300,22 @@ int nft_table_parse(struct nft_table *t, enum nft_table_parse_type type,
}
EXPORT_SYMBOL(nft_table_parse);
+static int nft_table_snprintf_json(char *buf, size_t size, struct nft_table *t)
+{
+ return snprintf(buf, size,
+ "{\"table\" : {"
+ "\"name\" : \"%s\","
+ "\"version\" : %d,"
+ "\"properties\" : {"
+ "\"family\" : %u,"
+ "\"table_flags\" : %d"
+ "}"
+ "}"
+ "}" ,
+ t->name, NFT_TABLE_JSON_VERSION,
+ t->family, t->table_flags);
+}
+
static int nft_table_snprintf_xml(char *buf, size_t size, struct nft_table *t)
{
return snprintf(buf, size,
@@ -325,6 +341,8 @@ int nft_table_snprintf(char *buf, size_t size, struct nft_table *t,
switch(type) {
case NFT_TABLE_O_XML:
return nft_table_snprintf_xml(buf, size, t);
+ case NFT_TABLE_O_JSON:
+ return nft_table_snprintf_json(buf, size, t);
case NFT_TABLE_O_DEFAULT:
return nft_table_snprintf_default(buf, size, t);
default: