static void
handle_fd_connecting (DskFileDescriptor fd,
unsigned events,
void *callback_data)
{
int err = dsk_errno_from_fd (fd);
DskClientStream *stream = callback_data;
DSK_UNUSED (events);
if (err == 0)
{
stream->is_connecting = DSK_FALSE;
stream->is_connected = DSK_TRUE;
handle_fd_connected (stream); /* sets the watch on the fd */
return;
}
if (err != EINTR && err != EAGAIN)
{
dsk_octet_stream_set_last_error (&stream->base_instance,
"error finishing connection to %s: %s",
stream->name, strerror (err));
dsk_dispatch_close_fd (dsk_dispatch_default (), stream->fd);
stream->fd = -1;
stream->is_connecting = DSK_FALSE;
maybe_set_autoreconnect_timer (stream);
return;
}
/* wait for another notification */
return;
}
DskDispatchSignal*dsk_main_add_signal (int signal_number,
DskSignalHandler func,
void *func_data)
{
return dsk_dispatch_add_signal (dsk_dispatch_default (),
signal_number, func, func_data);
}
DskDispatchChild *dsk_main_add_child (int process_id,
DskChildHandler func,
void *func_data)
{
return dsk_dispatch_add_child (dsk_dispatch_default (),
process_id, func, func_data);
}
/* --- Creating a user in a game --- */
static User *
create_user (Game *game, const char *name, unsigned width, unsigned height)
{
User *user = dsk_malloc (sizeof (User));
Cell *cell;
user->name = dsk_strdup (name);
user->base.type = OBJECT_TYPE_USER;
user->base.game = game;
/* pick random unoccupied position */
teleport_object (&user->base);
cell = game->cells
+ (user->base.x / CELL_SIZE)
+ (user->base.y / CELL_SIZE) * game->universe_width;
add_object_to_game_list (&user->base);
add_object_to_cell_list (&user->base);
user->bullet_block = 0;
user->bullet_x = user->bullet_y = 0;
user->width = width;
user->height = height;
user->dead_count = 0;
user->last_seen_time = dsk_dispatch_default ()->last_dispatch_secs;
user->move_x = user->move_y = 0;
user->last_update = (unsigned)(-1);
return user;
}
DskDispatchTimer *dsk_main_add_timer_millis(unsigned milliseconds,
DskTimerFunc func,
void *func_data)
{
return dsk_dispatch_add_timer_millis (dsk_dispatch_default (),
milliseconds, func, func_data);
}
DskDispatchTimer *dsk_main_add_timer (unsigned timeout_secs,
unsigned timeout_usecs,
DskTimerFunc func,
void *func_data)
{
return dsk_dispatch_add_timer (dsk_dispatch_default (),
timeout_secs, timeout_usecs, func, func_data);
}
int
dsk_main_run (void)
{
DskDispatch *d = dsk_dispatch_default ();
while (main_exit_status < 0)
dsk_dispatch_run (d);
return main_exit_status;
}
void dsk_main_watch_fd (DskFileDescriptor fd,
unsigned events,
DskFDFunc callback,
void *callback_data)
{
dsk_assert (fd >= 0);
dsk_dispatch_watch_fd (dsk_dispatch_default (),
fd, events, callback, callback_data);
}
static void
maybe_set_autoreconnect_timer (DskClientStream *stream)
{
dsk_assert (stream->reconnect_timer == NULL);
if (stream->reconnect_time_ms >= 0)
stream->reconnect_timer
= dsk_dispatch_add_timer_millis (dsk_dispatch_default (),
stream->reconnect_time_ms,
handle_reconnect_timer_expired,
stream);
}
static void
handle_fd_connected (DskClientStream *stream)
{
stream_do_watch_fd (stream);
dsk_assert (stream->idle_disconnect_timer == NULL);
if (stream->idle_disconnect_time_ms >= 0)
stream->idle_disconnect_timer = dsk_dispatch_add_timer_millis (dsk_dispatch_default (),
stream->idle_disconnect_time_ms,
handle_idle_too_long,
stream);
}
/* use -1 to disable these timeouts */
void
dsk_client_stream_set_reconnect_time (DskClientStream *client,
int millis)
{
/* short-circuit no-op cases */
if (millis < 0)
{
if (client->reconnect_time_ms == -1)
return;
millis = -1;
}
else if (client->reconnect_time_ms == millis)
return;
/* if we have a valid file-descriptor or we are resolving the name,
there then the reconnect_time_ms is not currently relevant:
set it and go */
if (client->fd != -1 || client->is_resolving_name)
{
client->reconnect_time_ms = millis;
return;
}
if (millis == -1)
{
/* handle timer removal */
if (client->reconnect_timer)
{
dsk_dispatch_remove_timer (client->reconnect_timer);
client->reconnect_timer = NULL;
}
else
dsk_warn_if_reached ("no reconnect timer?");
}
else
{
if (client->reconnect_time_ms >= 0)
dsk_dispatch_remove_timer (client->reconnect_timer);
else
dsk_assert (client->reconnect_timer == NULL);
client->reconnect_time_ms = millis;
/* TODO: subtract elapsed time from last disconnect / failed to connect */
client->reconnect_timer
= dsk_dispatch_add_timer_millis (dsk_dispatch_default (),
millis,
handle_reconnect_timer_expired,
client);
}
}
static void
add_maybe_redirect_timer (void)
{
if (dsk_daemon_log_template == NULL)
return;
maybe_redirect_stdouterr ();
unsigned time = dsk_dispatch_default ()->last_dispatch_secs;
time -= time % dsk_daemon_log_interval;
time += dsk_daemon_log_interval;
dsk_main_add_timer (time, 0, (DskTimerFunc) add_maybe_redirect_timer, NULL);
}
static void
stream_do_watch_fd (DskClientStream *stream)
{
if (stream->is_connected)
{
int events = 0;
if (stream->base_instance.source != NULL
&& dsk_hook_is_trapped (&stream->base_instance.source->readable_hook))
events |= DSK_EVENT_READABLE;
if (stream->base_instance.sink != NULL
&& dsk_hook_is_trapped (&stream->base_instance.sink->writable_hook))
events |= DSK_EVENT_WRITABLE;
dsk_dispatch_watch_fd (dsk_dispatch_default (), stream->fd, events,
handle_fd_events, stream);
}
}
void
dsk_client_stream_set_max_idle_time (DskClientStream *client,
int millis)
{
if (millis < 0)
millis = -1;
if (millis == client->idle_disconnect_time_ms)
return;
if (client->idle_disconnect_timer != NULL)
{
dsk_dispatch_remove_timer (client->idle_disconnect_timer);
client->idle_disconnect_timer = NULL;
}
if (millis >= 0
&& client->is_connected)
client->idle_disconnect_timer = dsk_dispatch_add_timer_millis (dsk_dispatch_default (),
millis,
handle_idle_too_long,
client);
client->idle_disconnect_time_ms = millis;
}
void dsk_main_fd_closed (DskFileDescriptor fd)
{
dsk_dispatch_fd_closed (dsk_dispatch_default (), fd);
}
static void
begin_connecting_sockaddr (DskClientStream *stream,
unsigned addr_len,
struct sockaddr *addr)
{
int fd;
dsk_assert (stream->fd == -1);
dsk_assert (!stream->is_connecting);
dsk_assert (!stream->is_connected);
retry_sys_socket:
fd = socket (addr->sa_family, SOCK_STREAM, 0);
if (fd < 0)
{
int e = errno;
if (e == EINTR)
goto retry_sys_socket;
if (dsk_fd_creation_failed (e))
goto retry_sys_socket;
/* set error */
dsk_octet_stream_set_last_error (&stream->base_instance,
"error invoking socket(2) system-call: %s",
strerror (e));
goto handle_error;
}
/* set non-blocking */
dsk_fd_set_nonblocking (fd);
dsk_fd_set_close_on_exec (fd);
/* call connect() */
retry_sys_connect:
if (connect (fd, addr, addr_len) < 0)
{
int e = errno;
if (e == EINTR)
goto retry_sys_connect;
if (e == EAGAIN || e == EINPROGRESS)
{
stream->is_connecting = DSK_TRUE;
stream->fd = fd;
dsk_dispatch_watch_fd (dsk_dispatch_default (), fd,
DSK_EVENT_WRITABLE|DSK_EVENT_READABLE,
handle_fd_connecting, stream);
return;
}
/* set error */
close (fd);
dsk_octet_stream_set_last_error (&stream->base_instance,
"error connecting to %s: %s",
stream->name, strerror (e));
goto handle_error;
}
stream->is_connected = DSK_TRUE;
stream->fd = fd;
handle_fd_connected (stream);
return;
handle_error:
maybe_set_autoreconnect_timer (stream);
return;
}
DskDispatchIdle *dsk_main_add_idle (DskIdleFunc func,
void *func_data)
{
return dsk_dispatch_add_idle (dsk_dispatch_default (), func, func_data);
}