int router_has_router(router_list_t *list, uint16_t vlan_id, struct in6_addr lla, struct ether_addr eth) {
if (router_get(list, vlan_id, lla, eth)==NULL) {
return 0;
}
return 1;
}
void
router_update(int old, int main_router_fd, tc_ip_header_t *ip_header)
{
#if (!TCPCOPY_SINGLE)
int fd;
uint32_t key;
#endif
uint32_t size_ip, size_tcp, tot_len;
msg_server_t msg;
tc_tcp_header_t *tcp_header;
#if (TCPCOPY_MYSQL_ADVANCED)
uint32_t cont_len;
unsigned char *payload, *p;
#endif
#if (TCPCOPY_SINGLE)
if (main_router_fd == 0) {
return;
}
#endif
if (ip_header->protocol != IPPROTO_TCP) {
tc_log_info(LOG_INFO, 0, "this is not a tcp packet");
return;
}
size_ip = ip_header->ihl << 2;
tcp_header = (tc_tcp_header_t *) ((char *) ip_header + size_ip);
size_tcp = tcp_header->doff << 2;
tot_len = ntohs(ip_header->tot_len);
memset(&msg, 0, sizeof(struct msg_server_s));
memcpy((void *) &(msg.ip_header), ip_header, sizeof(tc_ip_header_t));
memcpy((void *) &(msg.tcp_header), tcp_header, size_tcp);
#if (TCPCOPY_MYSQL_ADVANCED)
cont_len = tot_len - size_ip - size_tcp;
if (cont_len > 0) {
payload = (unsigned char *) ((char *) tcp_header + size_tcp);
if (cont_len <= MAX_PAYLOAD_LEN) {
p = ((unsigned char *) &(msg.tcp_header)) + size_tcp;
memcpy((void *) p, payload, cont_len);
}
}
#endif
#if (!TCPCOPY_SINGLE)
key = get_route_key(old, ip_header->daddr, tcp_header->dest,
ip_header->saddr, tcp_header->source);
fd = router_get(key);
if (fd <= 0) {
if (tcp_header->syn || tcp_header->rst) {
if (tcp_header->rst) {
tc_log_info(LOG_NOTICE, 0, "reset from tcp");
}
tc_log_debug0(LOG_DEBUG, 0, "fd is null");
delay_table_add(key, &msg);
return ;
} else {
tc_log_info(LOG_NOTICE, 0, "fd is null after session is created");
tc_log_trace(LOG_NOTICE, 0, BACKEND_FLAG, ip_header, tcp_header);
return;
}
}
#endif
tc_log_debug_trace(LOG_NOTICE, 0, BACKEND_FLAG, ip_header, tcp_header);
#if (INTERCEPT_COMBINED)
#if (!TCPCOPY_SINGLE)
buffer_and_send(main_router_fd, (int) (long) fd, &msg);
#else
buffer_and_send(main_router_fd, main_router_fd, &msg);
#endif
#else
#if (!TCPCOPY_SINGLE)
tc_socket_send((int) (long) fd, (char *) &msg, MSG_SERVER_SIZE);
#else
tc_socket_send(main_router_fd, (char *) &msg, MSG_SERVER_SIZE);
#endif
#endif
}
