/* Check if the time windows have expired, updating their counters and
* expiration time if that's the case.
*
* @ta: the TimedAverage structure
* @elapsed: if non-NULL, the elapsed time (in ns) within the current
* window will be stored here
*/
static void check_expirations(TimedAverage *ta, uint64_t *elapsed)
{
int64_t now = qemu_clock_get_ns(ta->clock_type);
int i;
assert(ta->period != 0);
/* Check if the windows have expired */
for (i = 0; i < 2; i++) {
TimedAverageWindow *w = &ta->windows[i];
if (w->expiration <= now) {
window_reset(w);
update_expiration(w, now, ta->period);
}
}
/* Make ta->current point to the oldest window */
if (ta->windows[0].expiration < ta->windows[1].expiration) {
ta->current = 0;
} else {
ta->current = 1;
}
/* Calculate the elapsed time within the current window */
if (elapsed) {
int64_t remaining = ta->windows[ta->current].expiration - now;
*elapsed = ta->period - remaining;
}
}
static void service_game_server(int connection)
{
int rc;
int i;
struct sockaddr peer;
struct sockaddr_in *ip4addr;
unsigned int addrlen;
struct ssgl_game_server gs;
unsigned char *x;
/* Get game server information */
rc = ssgl_readsocket(connection, &gs, sizeof(gs));
if (rc < 0)
return;
printf("1 gs.game_type = '%s', gs.port = %hu\n",gs.game_type, gs.port);
if (sanitize_game_server_entry(&gs))
return;
printf("2 gs.game_type = '%s'\n",gs.game_type);
/* Get the game server's ip addr (don't trust what we were told.) */
memset(&gs.ipaddr, 0, sizeof(gs.ipaddr));
addrlen = sizeof(peer);
rc = getpeername(connection, &peer, &addrlen);
if (rc != 0) {
printf("getpeername failed: %s\n", strerror(errno));
}
printf("addrlen = %d\n", addrlen);
x = (unsigned char *) &peer;
for (i = 0; i < addrlen; i++)
printf("%02x ", x[i]);
printf("\n");
ip4addr = (struct sockaddr_in *) &peer;
memcpy(&gs.ipaddr, &ip4addr->sin_addr, sizeof(gs.ipaddr));
printf("3 gs.game_type = '%s'\n",gs.game_type);
/* Update directory with new info. */
ssgl_lock();
/* replace with faster algorithm if need be. */
for (i = 0; i < ngame_servers; i++) {
/* already present? */
if (memcmp(&game_server[i], &gs, sizeof(gs)) == 0) {
update_expiration(i);
goto out;
}
}
printf("4 gs.game_type = '%s'\n",gs.game_type);
if (ngame_servers >= MAX_GAME_SERVERS)
goto out; /* no room at the inn. */
printf("5 gs.game_type = '%s'\n",gs.game_type);
/* add the new game server info into the directory... */
game_server[ngame_servers] = gs;
update_expiration(ngame_servers);
printf("6 gs.game_type = '%s'\n",gs.game_type);
ngame_servers++;
out:
ssgl_unlock();
return;
}
static void service_game_server(int connection)
{
int rc;
int i;
struct ssgl_game_server gs;
#if 0
struct sockaddr peer;
struct sockaddr_in *ip4addr;
unsigned int addrlen;
unsigned char *x;
#endif
/* Get game server information */
rc = ssgl_readsocket(connection, &gs, sizeof(gs));
if (rc < 0) {
ssgl_log(SSGL_WARN, "Failed initial socket read from game server\n");
return;
}
/* printf("1 gs.game_type = '%s', gs.port = %hu\n",gs.game_type, gs.port); */
if (sanitize_game_server_entry(&gs)) {
ssgl_log(SSGL_WARN, "Failed to sanitize game server information\n");
return;
}
/* printf("2 gs.game_type = '%s'\n",gs.game_type); */
#if 0
/* This doesn't work... will return 127.0.0.1 if gameserver is on
* the same host as lobby server.
*/
/* Get the game server's ip addr (don't trust what we were told.) */
memset(&gs.ipaddr, 0, sizeof(gs.ipaddr));
addrlen = sizeof(peer);
rc = getpeername(connection, &peer, &addrlen);
if (rc != 0) {
printf("getpeername failed: %s\n", strerror(errno));
}
printf("addrlen = %d\n", addrlen);
x = (unsigned char *) &peer;
for (i = 0; i < addrlen; i++)
printf("%02x ", x[i]);
printf("\n");
ip4addr = (struct sockaddr_in *) &peer;
memcpy(&gs.ipaddr, &ip4addr->sin_addr, sizeof(gs.ipaddr));
#endif
/* printf("3 gs.game_type = '%s'\n",gs.game_type); */
/* Update directory with new info. */
ssgl_lock();
/* replace with faster algorithm if need be. */
for (i = 0; i < ngame_servers; i++) {
struct ssgl_game_server *ogs = &game_server[i];
/* already present? */
if (ogs->port == gs.port &&
ogs->ipaddr == gs.ipaddr &&
memcmp(ogs->game_type, gs.game_type, sizeof(gs.game_type)) == 0 &&
memcmp(ogs->game_instance, gs.game_instance, sizeof(gs.game_instance)) == 0 &&
memcmp(ogs->server_nickname, gs.server_nickname, sizeof(gs.server_nickname)) == 0 &&
memcmp(ogs->location, gs.location, sizeof(gs.location)) == 0) {
ogs->nconnections = gs.nconnections;
update_expiration(i);
goto out;
}
}
/* printf("4 gs.game_type = '%s'\n",gs.game_type); */
if (ngame_servers >= MAX_GAME_SERVERS) {
ssgl_log(SSGL_WARN, "Too many game servers connected, rejecting game server.\n");
goto out; /* no room at the inn. */
}
/* printf("5 gs.game_type = '%s'\n",gs.game_type); */
/* add the new game server info into the directory... */
game_server[ngame_servers] = gs;
update_expiration(ngame_servers);
/* printf("6 gs.game_type = '%s'\n",gs.game_type); */
ngame_servers++;
out:
ssgl_unlock();
return;
}