static int
tc_nl_event_process(tc_event_t *rev)
{
int i, pass_through_flag = 0;
char buffer[65535];
unsigned long packet_id;
tc_ip_header_t *ip_hdr;
packet_id = 0;
if (tc_nl_socket_recv(rev->fd, buffer, 65535) == TC_ERROR) {
return TC_ERROR;
}
ip_hdr = tc_nl_ip_header(buffer);
packet_id = tc_nl_packet_id(buffer);
if (ip_hdr != NULL) {
/* check if it is the valid user to pass through firewall */
for (i = 0; i < srv_settings.passed_ips.num; i++) {
if (srv_settings.passed_ips.ips[i] == ip_hdr->daddr) {
pass_through_flag = 1;
break;
}
}
tot_resp_packs++;
if (pass_through_flag) {
#if (INTERCEPT_THREAD)
put_nl_verdict_to_pool(rev->fd, NF_ACCEPT, packet_id);
#else
/* pass through the firewall */
dispose_netlink_packet(rev->fd, NF_ACCEPT, packet_id);
#endif
} else {
tot_copy_resp_packs++;
#if (INTERCEPT_THREAD)
/* put response packet header to pool */
put_resp_header_to_pool(ip_hdr);
/* drop the packet */
put_nl_verdict_to_pool(rev->fd, NF_DROP, packet_id);
#else
router_update(srv_settings.router_fd, ip_hdr);
tc_check_cleaning();
/* drop the packet */
dispose_netlink_packet(rev->fd, NF_DROP, packet_id);
#endif
}
}
return TC_OK;
}
static int
tc_nl_event_process(tc_event_t *rev)
{
int i, pass_through_flag = 0;
char buffer[65536];
unsigned long packet_id;
tc_ip_header_t *ip_hdr;
if (tc_nl_socket_recv(rev->fd, buffer, 65536) == TC_ERROR)
{
return TC_ERROR;
}
ip_hdr = tc_nl_ip_header(buffer);
packet_id = tc_nl_packet_id(buffer);
if (ip_hdr != NULL) {
/* check if it is the valid user to pass through firewall */
for (i = 0; i < srv_settings.passed_ips.num; i++) {
if (srv_settings.passed_ips.ips[i] == ip_hdr->daddr) {
pass_through_flag = 1;
break;
}
}
tot_resp_packs++;
if (pass_through_flag) {
/* pass through the firewall */
dispose_netlink_packet(rev->fd, NF_ACCEPT, packet_id);
} else {
tot_copy_resp_packs++;
router_update(srv_settings.old, srv_settings.router_fd, ip_hdr);
/* drop the packet */
dispose_netlink_packet(rev->fd, NF_DROP, packet_id);
}
}
return TC_OK;
}