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#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <wayland-client.h>
#include <wayland-server.h>
#include "ext-idle-notify-v1-protocol.h"
#define LEN(X) (sizeof(X) / sizeof(X[0]))
static struct ext_idle_notifier_v1 *notifier;
static struct wl_compositor *compositor;
static struct wl_display *display;
static struct wl_registry *registry;
static struct wl_seat *seat;
static const struct ext_idle_notification_v1_listener idlelistener;
static const struct wl_registry_listener reglistener;
pid_t cpid;
struct Events {
uint32_t delay; /* in ms */
char **idlecmd;
char **resumecmd;
struct ext_idle_notification_v1 *notif;
};
#include "config.h"
static void die(const char *fmt, ...);
static void reghandler(void *data, struct wl_registry *registry, uint32_t id,
const char *interface, uint32_t version);
static void idling(void *data, struct ext_idle_notification_v1 *notif);
static void resuming(void *data, struct ext_idle_notification_v1 *notif);
static void run(char **cmd);
static void
die(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
if (fmt[0] && fmt[strlen(fmt)-1] == ':') {
fputc(' ', stderr);
perror(NULL);
} else
fputc('\n', stderr);
exit(1);
}
static void
reghandler(void *data, struct wl_registry *registry, uint32_t id,
const char *interface, uint32_t version)
{
if (strcmp(interface, wl_compositor_interface.name) == 0)
compositor = wl_registry_bind(registry, id, &wl_compositor_interface, 1);
else if (strcmp(interface, ext_idle_notifier_v1_interface.name) == 0)
notifier = wl_registry_bind(registry, id, &ext_idle_notifier_v1_interface, 1);
else if (strcmp(interface, wl_seat_interface.name) == 0)
seat = wl_registry_bind(registry, id, &wl_seat_interface, 7);
}
static const struct wl_registry_listener reglistener = {
.global = reghandler,
};
static void
idling(void *data, struct ext_idle_notification_v1 *notif)
{
struct Events *event = data;
run(event->idlecmd);
}
static void
resuming(void *data, struct ext_idle_notification_v1 *notif)
{
struct Events *event = data;
run(event->resumecmd);
}
static const struct ext_idle_notification_v1_listener idlelistener = {
.idled = idling,
.resumed = resuming,
};
static void
run(char **cmd)
{
waitpid(-1, NULL, WNOHANG);
if (killchild && cpid)
kill(cpid, SIGINT);
if (cmd && (cpid = fork()) == 0) {
dup2(STDERR_FILENO, STDOUT_FILENO);
setsid();
execvp(cmd[0], cmd);
die("execvp failed:");
}
}
int
main(int argc, char *argv[])
{
int i, c;
while ((c = getopt(argc, argv, "hv")) != -1) {
switch (c) {
case 'v': die("%s-%s", argv[0], VERSION); break;
case 'h':
default: die("usage: %s [-hv]", argv[0]); break;
}
}
display = wl_display_connect(NULL);
if (!display)
die("%s: failed to connect to wayland display :(", argv[0]);
registry = wl_display_get_registry(display);
wl_registry_add_listener(registry, ®listener, NULL);
wl_display_roundtrip(display);
if (!compositor || !notifier || !seat)
die("%s: compositor doesn't support all necessary protocols", argv[0]);
/* register all events */
for (i = 0; i < LEN(events); i++) {
if (events[i].delay < 0)
continue;
events[i].notif = ext_idle_notifier_v1_get_idle_notification(notifier,
events[i].delay, seat);
ext_idle_notification_v1_add_listener(events[i].notif, &idlelistener,
&events[i]);
}
wl_display_roundtrip(display);
while (wl_display_dispatch(display) != -1)
if (nozombies)
waitpid(-1, NULL, WUNTRACED);
ext_idle_notifier_v1_destroy(notifier);
wl_registry_destroy(registry);
wl_display_destroy(display);
wl_compositor_destroy(compositor);
}
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