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/* nl_create_socket(), nl_bind_socket() and nl_read_msg()
* for Interactive Firewall
* sbellabes@mandriva.com
*/
#include <asm/types.h>
#include <sys/socket.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include <stdio.h>
#include "libnl_ifw.h"
int nl_ifw_bind_socket(int s) {
struct sockaddr_nl saddr_nl;
int res;
memset(&saddr_nl, 0, sizeof(struct sockaddr_nl));
saddr_nl.nl_family = AF_NETLINK;
saddr_nl.nl_pid = getpid();
saddr_nl.nl_groups = 10;
res = bind(s, (struct sockaddr *)&saddr_nl, sizeof(saddr_nl));
if (res == -1) {
perror("nl_bind_socket");
return -1;
}
return 1;
}
int nl_ifw_create_socket(void) {
int s;
s = socket(PF_NETLINK, SOCK_RAW, NETLINK_IFWLOG);
if (s < 0) {
perror("nl_create_socket");
return -1;
}
if (nl_ifw_bind_socket(s) < 0) {
close(s);
fprintf(stderr, "bind failed\n");
return -1;
}
return s;
}
int nl_ifw_read_msg(int s, struct nlmsghdr *nlh, struct nl_msg *msg) {
char buf[sizeof(struct nlmsghdr) + sizeof(struct nl_msg)];
int ret;
ret = recv(s, &buf, sizeof(buf), 0);
if (ret > 0) {
if (nlh) memcpy(nlh, buf, sizeof(struct nlmsghdr));
if (msg) memcpy(msg, NLMSG_DATA(buf), sizeof(struct nl_msg));
}
return ret;
}
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