From 2d5b917f8b36ea12037c51f4d12184a442a7791e Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Mon, 14 Feb 2022 13:02:21 +0100 Subject: examples: load ruleset from JSON Add an example to load a ruleset file expressed in JSON. Signed-off-by: Pablo Neira Ayuso --- examples/nft-json-file.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 examples/nft-json-file.c (limited to 'examples/nft-json-file.c') diff --git a/examples/nft-json-file.c b/examples/nft-json-file.c new file mode 100644 index 00000000..0c832f22 --- /dev/null +++ b/examples/nft-json-file.c @@ -0,0 +1,30 @@ +/* gcc nft-json-file.c -o nft-json-file -lnftables */ +#include +#include + +int main(void) +{ + struct nft_ctx *ctx; + int err; + + ctx = nft_ctx_new(0); + if (!ctx) { + perror("cannot allocate nft context"); + return EXIT_FAILURE; + } + + nft_ctx_output_set_flags(ctx, NFT_CTX_OUTPUT_JSON); + + /* create ruleset: all commands in the buffer are atomically applied */ + err = nft_run_cmd_from_filename(ctx, "json-ruleset.nft"); + if (err < 0) + fprintf(stderr, "failed to run nftables command\n"); + + err = nft_run_cmd_from_buffer(ctx, "list ruleset"); + if (err < 0) + fprintf(stderr, "failed to run nftables command\n"); + + nft_ctx_free(ctx); + + return EXIT_SUCCESS; +} -- cgit v1.2.3