From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alvaro Neira Subject: [libnftables PATCH 7/7] examples: Add nft-chain-json-add Date: Wed, 31 Jul 2013 15:21:34 +0200 Message-ID: <20130731132134.29730.13415.stgit@Ph0enix> References: <20130731132051.29730.53717.stgit@Ph0enix> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: eric@regit.org To: netfilter-devel@vger.kernel.org Return-path: Received: from mail-we0-f170.google.com ([74.125.82.170]:50110 "EHLO mail-we0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759586Ab3GaNVj (ORCPT ); Wed, 31 Jul 2013 09:21:39 -0400 Received: by mail-we0-f170.google.com with SMTP id w60so606685wes.15 for ; Wed, 31 Jul 2013 06:21:37 -0700 (PDT) In-Reply-To: <20130731132051.29730.53717.stgit@Ph0enix> Sender: netfilter-devel-owner@vger.kernel.org List-ID: =46rom: =C3=81lvaro Neira Ayuso Signed-off-by: Alvaro Neira Ayuso --- examples/Makefile.am | 4 + examples/nft-chain-json-add.c | 118 +++++++++++++++++++++++++++++++++= ++++++++ 2 files changed, 122 insertions(+) create mode 100644 examples/nft-chain-json-add.c diff --git a/examples/Makefile.am b/examples/Makefile.am index 722ce0b..8d76f00 100644 --- a/examples/Makefile.am +++ b/examples/Makefile.am @@ -8,6 +8,7 @@ check_PROGRAMS =3D nft-table-add \ nft-table-get \ nft-chain-add \ nft-chain-xml-add \ + nft-chain-json-add \ nft-chain-del \ nft-chain-get \ nft-rule-add \ @@ -48,6 +49,9 @@ nft_chain_add_LDADD =3D ../src/libnftables.la ${LIBMN= L_LIBS} nft_chain_xml_add_SOURCES =3D nft-chain-xml-add.c nft_chain_xml_add_LDADD =3D ../src/libnftables.la ${LIBMNL_LIBS} =20 +nft_chain_json_add_SOURCES =3D nft-chain-json-add.c +nft_chain_json_add_LDADD =3D ../src/libnftables.la ${LIBMNL_LIBS} ${LI= BXML_LIBS} ${LIBJSON_LIBS} + nft_chain_del_SOURCES =3D nft-chain-del.c nft_chain_del_LDADD =3D ../src/libnftables.la ${LIBMNL_LIBS} =20 diff --git a/examples/nft-chain-json-add.c b/examples/nft-chain-json-ad= d.c new file mode 100644 index 0000000..42e2d82 --- /dev/null +++ b/examples/nft-chain-json-add.c @@ -0,0 +1,118 @@ +/* + * (C) 2013 by =C3=81lvaro Neira Ayuso + * + * Based on nft-chain-xml-add from: + * + * (C) 2013 by Pablo Neira Ayuso + * (C) 2013 by Arturo Borrero Gonzalez + * + * This program is free software; you can redistribute it and/or modif= y 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 +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include +#include +#include + +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_chain *c =3D NULL; + int ret, fd; + uint16_t family; + char json[4096]; + char reprint[4096]; + + if (argc < 2) { + printf("Usage: %s \n", argv[0]); + exit(EXIT_FAILURE); + } + + c =3D nft_chain_alloc(); + if (c =3D=3D NULL) { + perror("OOM"); + exit(EXIT_FAILURE); + } + + fd =3D 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_chain_parse(c, NFT_CHAIN_PARSE_JSON, json) < 0) { + printf("E: Unable to parse JSON file: %s\n", strerror(errno)); + exit(EXIT_FAILURE); + } + + nft_chain_snprintf(reprint, sizeof(reprint), c, NFT_CHAIN_O_JSON, 0); + printf("Parsed:\n%s\n", reprint); + + nft_chain_attr_unset(c, NFT_CHAIN_ATTR_HANDLE); + family =3D nft_chain_attr_get_u32(c, NFT_CHAIN_ATTR_FAMILY); + + seq =3D time(NULL); + nlh =3D nft_chain_nlmsg_build_hdr(buf, NFT_MSG_NEWCHAIN, family, + NLM_F_CREATE|NLM_F_ACK, seq); + nft_chain_nlmsg_build_payload(nlh, c); + + nft_chain_free(c); + + nl =3D mnl_socket_open(NETLINK_NETFILTER); + if (nl =3D=3D 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 =3D mnl_socket_get_portid(nl); + + if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) { + perror("mnl_socket_send"); + exit(EXIT_FAILURE); + } + + ret =3D mnl_socket_recvfrom(nl, buf, sizeof(buf)); + while (ret > 0) { + ret =3D mnl_cb_run(buf, ret, seq, portid, NULL, NULL); + if (ret <=3D 0) + break; + ret =3D mnl_socket_recvfrom(nl, buf, sizeof(buf)); + } + if (ret =3D=3D -1) { + perror("error"); + exit(EXIT_FAILURE); + } + + mnl_socket_close(nl); + return EXIT_SUCCESS; +} -- To unsubscribe from this list: send the line "unsubscribe netfilter-dev= el" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html