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/* $OpenBSD: alerts.c,v 1.20 2017/06/28 06:45:31 nicm Exp $ */
/*
* Copyright (c) 2015 Nicholas Marriott <nicholas.marriott@gmail.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <event.h>
#include <stdlib.h>
#include "tmux.h"
static int alerts_fired;
static void alerts_timer(int, short, void *);
static int alerts_enabled(struct window *, int);
static void alerts_callback(int, short, void *);
static void alerts_reset(struct window *);
static int alerts_check_all(struct window *);
static int alerts_check_bell(struct window *);
static int alerts_check_activity(struct window *);
static int alerts_check_silence(struct window *);
static void printflike(2, 3) alerts_set_message(struct session *, const char *,
...);
static void alerts_ring_bell(struct session *);
static TAILQ_HEAD(, window) alerts_list = TAILQ_HEAD_INITIALIZER(alerts_list);
static void
alerts_timer(__unused int fd, __unused short events, void *arg)
{
struct window *w = arg;
log_debug("@%u alerts timer expired", w->id);
alerts_reset(w);
alerts_queue(w, WINDOW_SILENCE);
}
static void
alerts_callback(__unused int fd, __unused short events, __unused void *arg)
{
struct window *w, *w1;
int alerts;
TAILQ_FOREACH_SAFE(w, &alerts_list, alerts_entry, w1) {
alerts = alerts_check_all(w);
log_debug("@%u alerts check, alerts %#x", w->id, alerts);
w->alerts_queued = 0;
TAILQ_REMOVE(&alerts_list, w, alerts_entry);
w->flags &= ~WINDOW_ALERTFLAGS;
window_remove_ref(w, __func__);
}
alerts_fired = 0;
}
static int
alerts_check_all(struct window *w)
{
int alerts;
alerts = alerts_check_bell(w);
alerts |= alerts_check_activity(w);
alerts |= alerts_check_silence(w);
return (alerts);
}
void
alerts_check_session(struct session *s)
{
struct winlink *wl;
RB_FOREACH(wl, winlinks, &s->windows)
alerts_check_all(wl->window);
}
static int
alerts_enabled(struct window *w, int flags)
{
if (flags & WINDOW_BELL)
return (1);
if (flags & WINDOW_ACTIVITY) {
if (options_get_number(w->options, "monitor-activity"))
return (1);
}
if (flags & WINDOW_SILENCE) {
if (options_get_number(w->options, "monitor-silence") != 0)
return (1);
}
return (0);
}
void
alerts_reset_all(void)
{
struct window *w;
RB_FOREACH(w, windows, &windows)
alerts_reset(w);
}
static void
alerts_reset(struct window *w)
{
struct timeval tv;
w->flags &= ~WINDOW_SILENCE;
event_del(&w->alerts_timer);
timerclear(&tv);
tv.tv_sec = options_get_number(w->options, "monitor-silence");
log_debug("@%u alerts timer reset %u", w->id, (u_int)tv.tv_sec);
if (tv.tv_sec != 0)
event_add(&w->alerts_timer, &tv);
}
void
alerts_queue(struct window *w, int flags)
{
if (w->flags & WINDOW_ACTIVITY)
alerts_reset(w);
if (!event_initialized(&w->alerts_timer))
evtimer_set(&w->alerts_timer, alerts_timer, w);
if ((w->flags & flags) != flags) {
w->flags |= flags;
log_debug("@%u alerts flags added %#x", w->id, flags);
}
if (alerts_enabled(w, flags)) {
if (!w->alerts_queued) {
w->alerts_queued = 1;
TAILQ_INSERT_TAIL(&alerts_list, w, alerts_entry);
window_add_ref(w, __func__);
}
if (!alerts_fired) {
log_debug("alerts check queued (by @%u)", w->id);
event_once(-1, EV_TIMEOUT, alerts_callback, NULL, NULL);
alerts_fired = 1;
}
}
}
static int
alerts_check_bell(struct window *w)
{
struct window *ws;
struct winlink *wl;
struct session *s;
struct client *c;
int action, visual;
if (~w->flags & WINDOW_BELL)
return (0);
TAILQ_FOREACH(wl, &w->winlinks, wentry)
wl->session->flags &= ~SESSION_ALERTED;
TAILQ_FOREACH(wl, &w->winlinks, wentry) {
if (wl->flags & WINLINK_BELL)
continue;
s = wl->session;
if (s->curw != wl) {
wl->flags |= WINLINK_BELL;
notify_winlink("alert-bell", wl);
}
if (s->flags & SESSION_ALERTED)
continue;
s->flags |= SESSION_ALERTED;
action = options_get_number(s->options, "bell-action");
if (action == BELL_NONE)
return (0);
visual = options_get_number(s->options, "visual-bell");
TAILQ_FOREACH(c, &clients, entry) {
if (c->session != s || c->flags & CLIENT_CONTROL)
continue;
ws = c->session->curw->window;
if (action == BELL_CURRENT && ws != w)
action = BELL_NONE;
if (action == BELL_OTHER && ws != w)
action = BELL_NONE;
if (!visual) {
if (action != BELL_NONE)
tty_putcode(&c->tty, TTYC_BEL);
continue;
}
if (action == BELL_CURRENT)
status_message_set(c, "Bell in current window");
else if (action != BELL_NONE) {
status_message_set(c, "Bell in window %d",
wl->idx);
}
}
}
return (WINDOW_BELL);
}
static int
alerts_check_activity(struct window *w)
{
struct winlink *wl;
struct session *s;
if (~w->flags & WINDOW_ACTIVITY)
return (0);
if (!options_get_number(w->options, "monitor-activity"))
return (0);
TAILQ_FOREACH(wl, &w->winlinks, wentry)
wl->session->flags &= ~SESSION_ALERTED;
TAILQ_FOREACH(wl, &w->winlinks, wentry) {
if (wl->flags & WINLINK_ACTIVITY)
continue;
s = wl->session;
if (s->curw == wl)
continue;
wl->flags |= WINLINK_ACTIVITY;
notify_winlink("alert-activity", wl);
if (s->flags & SESSION_ALERTED)
continue;
s->flags |= SESSION_ALERTED;
if (options_get_number(s->options, "bell-on-alert"))
alerts_ring_bell(s);
if (options_get_number(s->options, "visual-activity"))
alerts_set_message(s, "Activity in window %d", wl->idx);
}
return (WINDOW_ACTIVITY);
}
static int
alerts_check_silence(struct window *w)
{
struct winlink *wl;
struct session *s;
if (~w->flags & WINDOW_SILENCE)
return (0);
if (!options_get_number(w->options, "monitor-silence"))
return (0);
TAILQ_FOREACH(wl, &w->winlinks, wentry)
wl->session->flags &= ~SESSION_ALERTED;
TAILQ_FOREACH(wl, &w->winlinks, wentry) {
if (wl->flags & WINLINK_SILENCE)
continue;
s = wl->session;
if (s->curw == wl)
continue;
wl->flags |= WINLINK_SILENCE;
notify_winlink("alert-silence", wl);
if (s->flags & SESSION_ALERTED)
continue;
s->flags |= SESSION_ALERTED;
if (options_get_number(s->options, "bell-on-alert"))
alerts_ring_bell(s);
if (options_get_number(s->options, "visual-silence"))
alerts_set_message(s, "Silence in window %d", wl->idx);
}
return (WINDOW_SILENCE);
}
static void
alerts_set_message(struct session *s, const char *fmt, ...)
{
struct client *c;
va_list ap;
char *message;
va_start(ap, fmt);
xvasprintf(&message, fmt, ap);
va_end(ap);
TAILQ_FOREACH(c, &clients, entry) {
if (c->session == s)
status_message_set(c, "%s", message);
}
free(message);
}
static void
alerts_ring_bell(struct session *s)
{
struct client *c;
TAILQ_FOREACH(c, &clients, entry) {
if (c->session == s && !(c->flags & CLIENT_CONTROL))
tty_putcode(&c->tty, TTYC_BEL);
}
}
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