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/*
* 2013 by Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com>
*
* 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 xml[4096];
char reprint[4096];
if (argc < 2) {
printf("Usage: %s <xml-file>\n", argv[0]);
exit(EXIT_FAILURE);
}
fd = open(argv[1], O_RDONLY);
if (fd < 0) {
perror("open");
exit(EXIT_FAILURE);
}
if (read(fd, xml, sizeof(xml)) < 0) {
perror("read");
close(fd);
exit(EXIT_FAILURE);
}
r = nft_rule_alloc();
if (r == NULL) {
perror("OOM");
exit(EXIT_FAILURE);
}
if (nft_rule_parse(r, NFT_RULE_PARSE_XML, xml) < 0) {
printf("E: Unable to parse XML file: %s\n", strerror(errno));
exit(EXIT_FAILURE);
}
nft_rule_snprintf(reprint, sizeof(reprint), r, NFT_RULE_O_XML, 0);
printf("Parsed:\n%s\n", reprint);
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_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;
}
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