16 #include <netinet/in.h>
17 #include <sys/types.h>
22 #include <linux/netfilter.h>
23 #include <linux/netfilter/nf_tables.h>
25 #include <libmnl/libmnl.h>
26 #include <libnftnl/chain.h>
27 #include <libnftnl/rule.h>
29 static struct nftnl_chain *chain_parse_file(
const char *file, uint16_t format)
33 struct nftnl_parse_err *err;
36 c = nftnl_chain_alloc();
42 fd = open(file, O_RDONLY);
48 if (read(fd, data,
sizeof(data)) < 0) {
56 err = nftnl_parse_err_alloc();
62 if (nftnl_chain_parse(c, format, data, err) < 0) {
63 nftnl_parse_perror(
"Unable to parse file", err);
64 nftnl_parse_err_free(err);
68 nftnl_parse_err_free(err);
72 int main(
int argc,
char *argv[])
74 struct mnl_socket *nl;
75 char buf[MNL_SOCKET_BUFFER_SIZE];
77 uint32_t portid, seq, chain_seq;
79 uint16_t family, format, outformat;
81 struct mnl_nlmsg_batch *batch;
84 printf(
"Usage: %s {xml|json} <file>\n", argv[0]);
88 if (strcmp(argv[1],
"xml") == 0) {
89 format = NFTNL_PARSE_XML;
90 outformat = NFTNL_OUTPUT_XML;
91 }
else if (strcmp(argv[1],
"json") == 0) {
92 format = NFTNL_PARSE_JSON;
93 outformat = NFTNL_OUTPUT_JSON;
95 printf(
"Unknown format: xml, json\n");
99 c = chain_parse_file(argv[2], format);
103 nftnl_chain_fprintf(stdout, c, outformat, 0);
104 fprintf(stdout,
"\n");
106 nftnl_chain_unset(c, NFTNL_CHAIN_HANDLE);
107 family = nftnl_chain_get_u32(c, NFTNL_CHAIN_FAMILY);
110 batching = nftnl_batch_is_supported();
112 perror(
"cannot talk to nfnetlink");
116 batch = mnl_nlmsg_batch_start(buf,
sizeof(buf));
119 nftnl_batch_begin(mnl_nlmsg_batch_current(batch), seq++);
120 mnl_nlmsg_batch_next(batch);
124 nlh = nftnl_chain_nlmsg_build_hdr(mnl_nlmsg_batch_current(batch),
125 NFT_MSG_NEWCHAIN, family,
127 nftnl_chain_nlmsg_build_payload(nlh, c);
129 mnl_nlmsg_batch_next(batch);
132 nftnl_batch_end(mnl_nlmsg_batch_current(batch), seq++);
133 mnl_nlmsg_batch_next(batch);
136 nl = mnl_socket_open(NETLINK_NETFILTER);
138 perror(
"mnl_socket_open");
142 if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
143 perror(
"mnl_socket_bind");
147 portid = mnl_socket_get_portid(nl);
149 if (mnl_socket_sendto(nl, mnl_nlmsg_batch_head(batch),
150 mnl_nlmsg_batch_size(batch)) < 0) {
151 perror(
"mnl_socket_send");
155 ret = mnl_socket_recvfrom(nl, buf,
sizeof(buf));
157 ret = mnl_cb_run(buf, ret, chain_seq, portid, NULL, NULL);
160 ret = mnl_socket_recvfrom(nl, buf,
sizeof(buf));
168 mnl_socket_close(nl);