/**
* This will check the ip address of the user, and
* remove any wrong address, and replace it with the correct one
* as seen by the hub.
*/
static int check_network(struct hub_info* hub, struct hub_user* user, struct adc_message* cmd)
{
const char* address = user_get_address(user);
/* Check for NAT override address */
if (acl_is_ip_nat_override(hub->acl, address))
{
char* client_given_ip = adc_msg_get_named_argument(cmd, ADC_INF_FLAG_IPV4_ADDR);
if (client_given_ip && strcmp(client_given_ip, "0.0.0.0") != 0)
{
user_set_nat_override(user);
adc_msg_remove_named_argument(cmd, ADC_INF_FLAG_IPV6_ADDR);
adc_msg_remove_named_argument(cmd, ADC_INF_FLAG_IPV6_UDP_PORT);
hub_free(client_given_ip);
return 0;
}
hub_free(client_given_ip);
}
if (strchr(address, '.'))
{
adc_msg_remove_named_argument(cmd, ADC_INF_FLAG_IPV6_ADDR);
adc_msg_remove_named_argument(cmd, ADC_INF_FLAG_IPV6_UDP_PORT);
adc_msg_remove_named_argument(cmd, ADC_INF_FLAG_IPV4_ADDR);
adc_msg_add_named_argument(cmd, ADC_INF_FLAG_IPV4_ADDR, address);
}
else if (strchr(address, ':'))
{
adc_msg_remove_named_argument(cmd, ADC_INF_FLAG_IPV4_ADDR);
adc_msg_remove_named_argument(cmd, ADC_INF_FLAG_IPV4_UDP_PORT);
adc_msg_remove_named_argument(cmd, ADC_INF_FLAG_IPV6_ADDR);
adc_msg_add_named_argument(cmd, ADC_INF_FLAG_IPV6_ADDR, address);
}
return 0;
}
int route_info_message(struct hub_info* hub, struct hub_user* u)
{
if (!user_is_nat_override(u))
{
return route_to_all(hub, u->info);
}
else
{
struct adc_message* cmd = adc_msg_copy(u->info);
const char* address = user_get_address(u);
struct hub_user* user = 0;
adc_msg_remove_named_argument(cmd, ADC_INF_FLAG_IPV4_ADDR);
adc_msg_add_named_argument(cmd, ADC_INF_FLAG_IPV4_ADDR, address);
user = (struct hub_user*) list_get_first(hub->users->list);
while (user)
{
if (user_is_nat_override(user))
route_to_user(hub, user, cmd);
else
route_to_user(hub, user, u->info);
user = (struct hub_user*) list_get_next(hub->users->list);
}
adc_msg_free(cmd);
}
return 0;
}
