xref: /openbsd-src/usr.bin/tmux/server-client.c (revision 3374c67d44f9b75b98444cbf63020f777792342e)
1 /* $OpenBSD: server-client.c,v 1.397 2022/07/19 07:10:13 nicm Exp $ */
2 
3 /*
4  * Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
5  *
6  * Permission to use, copy, modify, and distribute this software for any
7  * purpose with or without fee is hereby granted, provided that the above
8  * copyright notice and this permission notice appear in all copies.
9  *
10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17  */
18 
19 #include <sys/types.h>
20 #include <sys/ioctl.h>
21 #include <sys/uio.h>
22 
23 #include <errno.h>
24 #include <event.h>
25 #include <fcntl.h>
26 #include <imsg.h>
27 #include <paths.h>
28 #include <stdlib.h>
29 #include <string.h>
30 #include <time.h>
31 #include <unistd.h>
32 
33 #include "tmux.h"
34 
35 static void	server_client_free(int, short, void *);
36 static void	server_client_check_pane_resize(struct window_pane *);
37 static void	server_client_check_pane_buffer(struct window_pane *);
38 static void	server_client_check_window_resize(struct window *);
39 static key_code	server_client_check_mouse(struct client *, struct key_event *);
40 static void	server_client_repeat_timer(int, short, void *);
41 static void	server_client_click_timer(int, short, void *);
42 static void	server_client_check_exit(struct client *);
43 static void	server_client_check_redraw(struct client *);
44 static void	server_client_check_modes(struct client *);
45 static void	server_client_set_title(struct client *);
46 static void	server_client_set_path(struct client *);
47 static void	server_client_reset_state(struct client *);
48 static int	server_client_assume_paste(struct session *);
49 static void	server_client_update_latest(struct client *);
50 
51 static void	server_client_dispatch(struct imsg *, void *);
52 static void	server_client_dispatch_command(struct client *, struct imsg *);
53 static void	server_client_dispatch_identify(struct client *, struct imsg *);
54 static void	server_client_dispatch_shell(struct client *);
55 
56 /* Compare client windows. */
57 static int
58 server_client_window_cmp(struct client_window *cw1,
59     struct client_window *cw2)
60 {
61 	if (cw1->window < cw2->window)
62 		return (-1);
63 	if (cw1->window > cw2->window)
64 		return (1);
65 	return (0);
66 }
67 RB_GENERATE(client_windows, client_window, entry, server_client_window_cmp);
68 
69 /* Number of attached clients. */
70 u_int
71 server_client_how_many(void)
72 {
73 	struct client  	*c;
74 	u_int		 n;
75 
76 	n = 0;
77 	TAILQ_FOREACH(c, &clients, entry) {
78 		if (c->session != NULL && (~c->flags & CLIENT_UNATTACHEDFLAGS))
79 			n++;
80 	}
81 	return (n);
82 }
83 
84 /* Overlay timer callback. */
85 static void
86 server_client_overlay_timer(__unused int fd, __unused short events, void *data)
87 {
88 	server_client_clear_overlay(data);
89 }
90 
91 /* Set an overlay on client. */
92 void
93 server_client_set_overlay(struct client *c, u_int delay,
94     overlay_check_cb checkcb, overlay_mode_cb modecb,
95     overlay_draw_cb drawcb, overlay_key_cb keycb, overlay_free_cb freecb,
96     overlay_resize_cb resizecb, void *data)
97 {
98 	struct timeval	tv;
99 
100 	if (c->overlay_draw != NULL)
101 		server_client_clear_overlay(c);
102 
103 	tv.tv_sec = delay / 1000;
104 	tv.tv_usec = (delay % 1000) * 1000L;
105 
106 	if (event_initialized(&c->overlay_timer))
107 		evtimer_del(&c->overlay_timer);
108 	evtimer_set(&c->overlay_timer, server_client_overlay_timer, c);
109 	if (delay != 0)
110 		evtimer_add(&c->overlay_timer, &tv);
111 
112 	c->overlay_check = checkcb;
113 	c->overlay_mode = modecb;
114 	c->overlay_draw = drawcb;
115 	c->overlay_key = keycb;
116 	c->overlay_free = freecb;
117 	c->overlay_resize = resizecb;
118 	c->overlay_data = data;
119 
120 	if (c->overlay_check == NULL)
121 		c->tty.flags |= TTY_FREEZE;
122 	if (c->overlay_mode == NULL)
123 		c->tty.flags |= TTY_NOCURSOR;
124 	server_redraw_client(c);
125 }
126 
127 /* Clear overlay mode on client. */
128 void
129 server_client_clear_overlay(struct client *c)
130 {
131 	if (c->overlay_draw == NULL)
132 		return;
133 
134 	if (event_initialized(&c->overlay_timer))
135 		evtimer_del(&c->overlay_timer);
136 
137 	if (c->overlay_free != NULL)
138 		c->overlay_free(c, c->overlay_data);
139 
140 	c->overlay_check = NULL;
141 	c->overlay_mode = NULL;
142 	c->overlay_draw = NULL;
143 	c->overlay_key = NULL;
144 	c->overlay_free = NULL;
145 	c->overlay_data = NULL;
146 
147 	c->tty.flags &= ~(TTY_FREEZE|TTY_NOCURSOR);
148 	server_redraw_client(c);
149 }
150 
151 /*
152  * Given overlay position and dimensions, return parts of the input range which
153  * are visible.
154  */
155 void
156 server_client_overlay_range(u_int x, u_int y, u_int sx, u_int sy, u_int px,
157     u_int py, u_int nx, struct overlay_ranges *r)
158 {
159 	u_int	ox, onx;
160 
161 	/* Return up to 2 ranges. */
162 	r->px[2] = 0;
163 	r->nx[2] = 0;
164 
165 	/* Trivial case of no overlap in the y direction. */
166 	if (py < y || py > y + sy - 1) {
167 		r->px[0] = px;
168 		r->nx[0] = nx;
169 		r->px[1] = 0;
170 		r->nx[1] = 0;
171 		return;
172 	}
173 
174 	/* Visible bit to the left of the popup. */
175 	if (px < x) {
176 		r->px[0] = px;
177 		r->nx[0] = x - px;
178 		if (r->nx[0] > nx)
179 			r->nx[0] = nx;
180 	} else {
181 		r->px[0] = 0;
182 		r->nx[0] = 0;
183 	}
184 
185 	/* Visible bit to the right of the popup. */
186 	ox = x + sx;
187 	if (px > ox)
188 		ox = px;
189 	onx = px + nx;
190 	if (onx > ox) {
191 		r->px[1] = ox;
192 		r->nx[1] = onx - ox;
193 	} else {
194 		r->px[1] = 0;
195 		r->nx[1] = 0;
196 	}
197 }
198 
199 /* Check if this client is inside this server. */
200 int
201 server_client_check_nested(struct client *c)
202 {
203 	struct environ_entry	*envent;
204 	struct window_pane	*wp;
205 
206 	envent = environ_find(c->environ, "TMUX");
207 	if (envent == NULL || *envent->value == '\0')
208 		return (0);
209 
210 	RB_FOREACH(wp, window_pane_tree, &all_window_panes) {
211 		if (strcmp(wp->tty, c->ttyname) == 0)
212 			return (1);
213 	}
214 	return (0);
215 }
216 
217 /* Set client key table. */
218 void
219 server_client_set_key_table(struct client *c, const char *name)
220 {
221 	if (name == NULL)
222 		name = server_client_get_key_table(c);
223 
224 	key_bindings_unref_table(c->keytable);
225 	c->keytable = key_bindings_get_table(name, 1);
226 	c->keytable->references++;
227 }
228 
229 /* Get default key table. */
230 const char *
231 server_client_get_key_table(struct client *c)
232 {
233 	struct session	*s = c->session;
234 	const char	*name;
235 
236 	if (s == NULL)
237 		return ("root");
238 
239 	name = options_get_string(s->options, "key-table");
240 	if (*name == '\0')
241 		return ("root");
242 	return (name);
243 }
244 
245 /* Is this table the default key table? */
246 static int
247 server_client_is_default_key_table(struct client *c, struct key_table *table)
248 {
249 	return (strcmp(table->name, server_client_get_key_table(c)) == 0);
250 }
251 
252 /* Create a new client. */
253 struct client *
254 server_client_create(int fd)
255 {
256 	struct client	*c;
257 
258 	setblocking(fd, 0);
259 
260 	c = xcalloc(1, sizeof *c);
261 	c->references = 1;
262 	c->peer = proc_add_peer(server_proc, fd, server_client_dispatch, c);
263 
264 	if (gettimeofday(&c->creation_time, NULL) != 0)
265 		fatal("gettimeofday failed");
266 	memcpy(&c->activity_time, &c->creation_time, sizeof c->activity_time);
267 
268 	c->environ = environ_create();
269 
270 	c->fd = -1;
271 	c->out_fd = -1;
272 
273 	c->queue = cmdq_new();
274 	RB_INIT(&c->windows);
275 	RB_INIT(&c->files);
276 
277 	c->tty.sx = 80;
278 	c->tty.sy = 24;
279 
280 	status_init(c);
281 	c->flags |= CLIENT_FOCUSED;
282 
283 	c->keytable = key_bindings_get_table("root", 1);
284 	c->keytable->references++;
285 
286 	evtimer_set(&c->repeat_timer, server_client_repeat_timer, c);
287 	evtimer_set(&c->click_timer, server_client_click_timer, c);
288 
289 	TAILQ_INSERT_TAIL(&clients, c, entry);
290 	log_debug("new client %p", c);
291 	return (c);
292 }
293 
294 /* Open client terminal if needed. */
295 int
296 server_client_open(struct client *c, char **cause)
297 {
298 	const char	*ttynam = _PATH_TTY;
299 
300 	if (c->flags & CLIENT_CONTROL)
301 		return (0);
302 
303 	if (strcmp(c->ttyname, ttynam) == 0||
304 	    ((isatty(STDIN_FILENO) &&
305 	    (ttynam = ttyname(STDIN_FILENO)) != NULL &&
306 	    strcmp(c->ttyname, ttynam) == 0) ||
307 	    (isatty(STDOUT_FILENO) &&
308 	    (ttynam = ttyname(STDOUT_FILENO)) != NULL &&
309 	    strcmp(c->ttyname, ttynam) == 0) ||
310 	    (isatty(STDERR_FILENO) &&
311 	    (ttynam = ttyname(STDERR_FILENO)) != NULL &&
312 	    strcmp(c->ttyname, ttynam) == 0))) {
313 		xasprintf(cause, "can't use %s", c->ttyname);
314 		return (-1);
315 	}
316 
317 	if (!(c->flags & CLIENT_TERMINAL)) {
318 		*cause = xstrdup("not a terminal");
319 		return (-1);
320 	}
321 
322 	if (tty_open(&c->tty, cause) != 0)
323 		return (-1);
324 
325 	return (0);
326 }
327 
328 /* Lost an attached client. */
329 static void
330 server_client_attached_lost(struct client *c)
331 {
332 	struct session	*s;
333 	struct window	*w;
334 	struct client	*loop;
335 	struct client	*found;
336 
337 	log_debug("lost attached client %p", c);
338 
339 	/*
340 	 * By this point the session in the client has been cleared so walk all
341 	 * windows to find any with this client as the latest.
342 	 */
343 	RB_FOREACH(w, windows, &windows) {
344 		if (w->latest != c)
345 			continue;
346 
347 		found = NULL;
348 		TAILQ_FOREACH(loop, &clients, entry) {
349 			s = loop->session;
350 			if (loop == c || s == NULL || s->curw->window != w)
351 				continue;
352 			if (found == NULL || timercmp(&loop->activity_time,
353 			    &found->activity_time, >))
354 				found = loop;
355 		}
356 		if (found != NULL)
357 			server_client_update_latest(found);
358 	}
359 }
360 
361 /* Set client session. */
362 void
363 server_client_set_session(struct client *c, struct session *s)
364 {
365 	struct session	*old = c->session;
366 
367 	if (s != NULL && c->session != NULL && c->session != s)
368 		c->last_session = c->session;
369 	else if (s == NULL)
370 		c->last_session = NULL;
371 	c->session = s;
372 	c->flags |= CLIENT_FOCUSED;
373 
374 	if (old != NULL && old->curw != NULL)
375 		window_update_focus(old->curw->window);
376 	if (s != NULL) {
377 		recalculate_sizes();
378 		window_update_focus(s->curw->window);
379 		session_update_activity(s, NULL);
380 		gettimeofday(&s->last_attached_time, NULL);
381 		s->curw->flags &= ~WINLINK_ALERTFLAGS;
382 		s->curw->window->latest = c;
383 		alerts_check_session(s);
384 		tty_update_client_offset(c);
385 		status_timer_start(c);
386 		notify_client("client-session-changed", c);
387 		server_redraw_client(c);
388 	}
389 
390 	server_check_unattached();
391 	server_update_socket();
392 }
393 
394 /* Lost a client. */
395 void
396 server_client_lost(struct client *c)
397 {
398 	struct client_file	*cf, *cf1;
399 	struct client_window	*cw, *cw1;
400 
401 	c->flags |= CLIENT_DEAD;
402 
403 	server_client_clear_overlay(c);
404 	status_prompt_clear(c);
405 	status_message_clear(c);
406 
407 	RB_FOREACH_SAFE(cf, client_files, &c->files, cf1) {
408 		cf->error = EINTR;
409 		file_fire_done(cf);
410 	}
411 	RB_FOREACH_SAFE(cw, client_windows, &c->windows, cw1) {
412 		RB_REMOVE(client_windows, &c->windows, cw);
413 		free(cw);
414 	}
415 
416 	TAILQ_REMOVE(&clients, c, entry);
417 	log_debug("lost client %p", c);
418 
419 	if (c->flags & CLIENT_ATTACHED) {
420 		server_client_attached_lost(c);
421 		notify_client("client-detached", c);
422 	}
423 
424 	if (c->flags & CLIENT_CONTROL)
425 		control_stop(c);
426 	if (c->flags & CLIENT_TERMINAL)
427 		tty_free(&c->tty);
428 	free(c->ttyname);
429 	free(c->clipboard_panes);
430 
431 	free(c->term_name);
432 	free(c->term_type);
433 	tty_term_free_list(c->term_caps, c->term_ncaps);
434 
435 	status_free(c);
436 
437 	free(c->title);
438 	free((void *)c->cwd);
439 
440 	evtimer_del(&c->repeat_timer);
441 	evtimer_del(&c->click_timer);
442 
443 	key_bindings_unref_table(c->keytable);
444 
445 	free(c->message_string);
446 	if (event_initialized(&c->message_timer))
447 		evtimer_del(&c->message_timer);
448 
449 	free(c->prompt_saved);
450 	free(c->prompt_string);
451 	free(c->prompt_buffer);
452 
453 	format_lost_client(c);
454 	environ_free(c->environ);
455 
456 	proc_remove_peer(c->peer);
457 	c->peer = NULL;
458 
459 	if (c->out_fd != -1)
460 		close(c->out_fd);
461 	if (c->fd != -1) {
462 		close(c->fd);
463 		c->fd = -1;
464 	}
465 	server_client_unref(c);
466 
467 	server_add_accept(0); /* may be more file descriptors now */
468 
469 	recalculate_sizes();
470 	server_check_unattached();
471 	server_update_socket();
472 }
473 
474 /* Remove reference from a client. */
475 void
476 server_client_unref(struct client *c)
477 {
478 	log_debug("unref client %p (%d references)", c, c->references);
479 
480 	c->references--;
481 	if (c->references == 0)
482 		event_once(-1, EV_TIMEOUT, server_client_free, c, NULL);
483 }
484 
485 /* Free dead client. */
486 static void
487 server_client_free(__unused int fd, __unused short events, void *arg)
488 {
489 	struct client	*c = arg;
490 
491 	log_debug("free client %p (%d references)", c, c->references);
492 
493 	cmdq_free(c->queue);
494 
495 	if (c->references == 0) {
496 		free((void *)c->name);
497 		free(c);
498 	}
499 }
500 
501 /* Suspend a client. */
502 void
503 server_client_suspend(struct client *c)
504 {
505 	struct session	*s = c->session;
506 
507 	if (s == NULL || (c->flags & CLIENT_UNATTACHEDFLAGS))
508 		return;
509 
510 	tty_stop_tty(&c->tty);
511 	c->flags |= CLIENT_SUSPENDED;
512 	proc_send(c->peer, MSG_SUSPEND, -1, NULL, 0);
513 }
514 
515 /* Detach a client. */
516 void
517 server_client_detach(struct client *c, enum msgtype msgtype)
518 {
519 	struct session	*s = c->session;
520 
521 	if (s == NULL || (c->flags & CLIENT_NODETACHFLAGS))
522 		return;
523 
524 	c->flags |= CLIENT_EXIT;
525 
526 	c->exit_type = CLIENT_EXIT_DETACH;
527 	c->exit_msgtype = msgtype;
528 	c->exit_session = xstrdup(s->name);
529 }
530 
531 /* Execute command to replace a client. */
532 void
533 server_client_exec(struct client *c, const char *cmd)
534 {
535 	struct session	*s = c->session;
536 	char		*msg;
537 	const char	*shell;
538 	size_t		 cmdsize, shellsize;
539 
540 	if (*cmd == '\0')
541 		return;
542 	cmdsize = strlen(cmd) + 1;
543 
544 	if (s != NULL)
545 		shell = options_get_string(s->options, "default-shell");
546 	else
547 		shell = options_get_string(global_s_options, "default-shell");
548 	if (!checkshell(shell))
549 		shell = _PATH_BSHELL;
550 	shellsize = strlen(shell) + 1;
551 
552 	msg = xmalloc(cmdsize + shellsize);
553 	memcpy(msg, cmd, cmdsize);
554 	memcpy(msg + cmdsize, shell, shellsize);
555 
556 	proc_send(c->peer, MSG_EXEC, -1, msg, cmdsize + shellsize);
557 	free(msg);
558 }
559 
560 /* Check for mouse keys. */
561 static key_code
562 server_client_check_mouse(struct client *c, struct key_event *event)
563 {
564 	struct mouse_event	*m = &event->m;
565 	struct session		*s = c->session;
566 	struct winlink		*wl;
567 	struct window_pane	*wp;
568 	u_int			 x, y, b, sx, sy, px, py;
569 	int			 ignore = 0;
570 	key_code		 key;
571 	struct timeval		 tv;
572 	struct style_range	*sr;
573 	enum { NOTYPE,
574 	       MOVE,
575 	       DOWN,
576 	       UP,
577 	       DRAG,
578 	       WHEEL,
579 	       SECOND,
580 	       DOUBLE,
581 	       TRIPLE } type = NOTYPE;
582 	enum { NOWHERE,
583 	       PANE,
584 	       STATUS,
585 	       STATUS_LEFT,
586 	       STATUS_RIGHT,
587 	       STATUS_DEFAULT,
588 	       BORDER } where = NOWHERE;
589 
590 	log_debug("%s mouse %02x at %u,%u (last %u,%u) (%d)", c->name, m->b,
591 	    m->x, m->y, m->lx, m->ly, c->tty.mouse_drag_flag);
592 
593 	/* What type of event is this? */
594 	if (event->key == KEYC_DOUBLECLICK) {
595 		type = DOUBLE;
596 		x = m->x, y = m->y, b = m->b;
597 		ignore = 1;
598 		log_debug("double-click at %u,%u", x, y);
599 	} else if ((m->sgr_type != ' ' &&
600 	    MOUSE_DRAG(m->sgr_b) &&
601 	    MOUSE_RELEASE(m->sgr_b)) ||
602 	    (m->sgr_type == ' ' &&
603 	    MOUSE_DRAG(m->b) &&
604 	    MOUSE_RELEASE(m->b) &&
605 	    MOUSE_RELEASE(m->lb))) {
606 		type = MOVE;
607 		x = m->x, y = m->y, b = 0;
608 		log_debug("move at %u,%u", x, y);
609 	} else if (MOUSE_DRAG(m->b)) {
610 		type = DRAG;
611 		if (c->tty.mouse_drag_flag) {
612 			x = m->x, y = m->y, b = m->b;
613 			if (x == m->lx && y == m->ly)
614 				return (KEYC_UNKNOWN);
615 			log_debug("drag update at %u,%u", x, y);
616 		} else {
617 			x = m->lx, y = m->ly, b = m->lb;
618 			log_debug("drag start at %u,%u", x, y);
619 		}
620 	} else if (MOUSE_WHEEL(m->b)) {
621 		type = WHEEL;
622 		x = m->x, y = m->y, b = m->b;
623 		log_debug("wheel at %u,%u", x, y);
624 	} else if (MOUSE_RELEASE(m->b)) {
625 		type = UP;
626 		x = m->x, y = m->y, b = m->lb;
627 		log_debug("up at %u,%u", x, y);
628 	} else {
629 		if (c->flags & CLIENT_DOUBLECLICK) {
630 			evtimer_del(&c->click_timer);
631 			c->flags &= ~CLIENT_DOUBLECLICK;
632 			if (m->b == c->click_button) {
633 				type = SECOND;
634 				x = m->x, y = m->y, b = m->b;
635 				log_debug("second-click at %u,%u", x, y);
636 				c->flags |= CLIENT_TRIPLECLICK;
637 			}
638 		} else if (c->flags & CLIENT_TRIPLECLICK) {
639 			evtimer_del(&c->click_timer);
640 			c->flags &= ~CLIENT_TRIPLECLICK;
641 			if (m->b == c->click_button) {
642 				type = TRIPLE;
643 				x = m->x, y = m->y, b = m->b;
644 				log_debug("triple-click at %u,%u", x, y);
645 				goto have_event;
646 			}
647 		} else {
648 			type = DOWN;
649 			x = m->x, y = m->y, b = m->b;
650 			log_debug("down at %u,%u", x, y);
651 			c->flags |= CLIENT_DOUBLECLICK;
652 		}
653 
654 		if (KEYC_CLICK_TIMEOUT != 0) {
655 			memcpy(&c->click_event, m, sizeof c->click_event);
656 			c->click_button = m->b;
657 
658 			log_debug("click timer started");
659 			tv.tv_sec = KEYC_CLICK_TIMEOUT / 1000;
660 			tv.tv_usec = (KEYC_CLICK_TIMEOUT % 1000) * 1000L;
661 			evtimer_del(&c->click_timer);
662 			evtimer_add(&c->click_timer, &tv);
663 		}
664 	}
665 
666 have_event:
667 	if (type == NOTYPE)
668 		return (KEYC_UNKNOWN);
669 
670 	/* Save the session. */
671 	m->s = s->id;
672 	m->w = -1;
673 	m->ignore = ignore;
674 
675 	/* Is this on the status line? */
676 	m->statusat = status_at_line(c);
677 	m->statuslines = status_line_size(c);
678 	if (m->statusat != -1 &&
679 	    y >= (u_int)m->statusat &&
680 	    y < m->statusat + m->statuslines) {
681 		sr = status_get_range(c, x, y - m->statusat);
682 		if (sr == NULL) {
683 			where = STATUS_DEFAULT;
684 		} else {
685 			switch (sr->type) {
686 			case STYLE_RANGE_NONE:
687 				return (KEYC_UNKNOWN);
688 			case STYLE_RANGE_LEFT:
689 				where = STATUS_LEFT;
690 				break;
691 			case STYLE_RANGE_RIGHT:
692 				where = STATUS_RIGHT;
693 				break;
694 			case STYLE_RANGE_WINDOW:
695 				wl = winlink_find_by_index(&s->windows,
696 				    sr->argument);
697 				if (wl == NULL)
698 					return (KEYC_UNKNOWN);
699 				m->w = wl->window->id;
700 
701 				where = STATUS;
702 				break;
703 			}
704 		}
705 	}
706 
707 	/* Not on status line. Adjust position and check for border or pane. */
708 	if (where == NOWHERE) {
709 		px = x;
710 		if (m->statusat == 0 && y >= m->statuslines)
711 			py = y - m->statuslines;
712 		else if (m->statusat > 0 && y >= (u_int)m->statusat)
713 			py = m->statusat - 1;
714 		else
715 			py = y;
716 
717 		tty_window_offset(&c->tty, &m->ox, &m->oy, &sx, &sy);
718 		log_debug("mouse window @%u at %u,%u (%ux%u)",
719 		    s->curw->window->id, m->ox, m->oy, sx, sy);
720 		if (px > sx || py > sy)
721 			return (KEYC_UNKNOWN);
722 		px = px + m->ox;
723 		py = py + m->oy;
724 
725 		/* Try the pane borders if not zoomed. */
726 		if (~s->curw->window->flags & WINDOW_ZOOMED) {
727 			TAILQ_FOREACH(wp, &s->curw->window->panes, entry) {
728 				if ((wp->xoff + wp->sx == px &&
729 				    wp->yoff <= 1 + py &&
730 				    wp->yoff + wp->sy >= py) ||
731 				    (wp->yoff + wp->sy == py &&
732 				    wp->xoff <= 1 + px &&
733 				    wp->xoff + wp->sx >= px))
734 					break;
735 			}
736 			if (wp != NULL)
737 				where = BORDER;
738 		}
739 
740 		/* Otherwise try inside the pane. */
741 		if (where == NOWHERE) {
742 			wp = window_get_active_at(s->curw->window, px, py);
743 			if (wp != NULL)
744 				where = PANE;
745 			else
746 				return (KEYC_UNKNOWN);
747 		}
748 		if (where == PANE)
749 			log_debug("mouse %u,%u on pane %%%u", x, y, wp->id);
750 		else if (where == BORDER)
751 			log_debug("mouse on pane %%%u border", wp->id);
752 		m->wp = wp->id;
753 		m->w = wp->window->id;
754 	} else
755 		m->wp = -1;
756 
757 	/* Stop dragging if needed. */
758 	if (type != DRAG && type != WHEEL && c->tty.mouse_drag_flag != 0) {
759 		if (c->tty.mouse_drag_release != NULL)
760 			c->tty.mouse_drag_release(c, m);
761 
762 		c->tty.mouse_drag_update = NULL;
763 		c->tty.mouse_drag_release = NULL;
764 
765 		/*
766 		 * End a mouse drag by passing a MouseDragEnd key corresponding
767 		 * to the button that started the drag.
768 		 */
769 		switch (c->tty.mouse_drag_flag - 1) {
770 		case MOUSE_BUTTON_1:
771 			if (where == PANE)
772 				key = KEYC_MOUSEDRAGEND1_PANE;
773 			if (where == STATUS)
774 				key = KEYC_MOUSEDRAGEND1_STATUS;
775 			if (where == STATUS_LEFT)
776 				key = KEYC_MOUSEDRAGEND1_STATUS_LEFT;
777 			if (where == STATUS_RIGHT)
778 				key = KEYC_MOUSEDRAGEND1_STATUS_RIGHT;
779 			if (where == STATUS_DEFAULT)
780 				key = KEYC_MOUSEDRAGEND1_STATUS_DEFAULT;
781 			if (where == BORDER)
782 				key = KEYC_MOUSEDRAGEND1_BORDER;
783 			break;
784 		case MOUSE_BUTTON_2:
785 			if (where == PANE)
786 				key = KEYC_MOUSEDRAGEND2_PANE;
787 			if (where == STATUS)
788 				key = KEYC_MOUSEDRAGEND2_STATUS;
789 			if (where == STATUS_LEFT)
790 				key = KEYC_MOUSEDRAGEND2_STATUS_LEFT;
791 			if (where == STATUS_RIGHT)
792 				key = KEYC_MOUSEDRAGEND2_STATUS_RIGHT;
793 			if (where == STATUS_DEFAULT)
794 				key = KEYC_MOUSEDRAGEND2_STATUS_DEFAULT;
795 			if (where == BORDER)
796 				key = KEYC_MOUSEDRAGEND2_BORDER;
797 			break;
798 		case MOUSE_BUTTON_3:
799 			if (where == PANE)
800 				key = KEYC_MOUSEDRAGEND3_PANE;
801 			if (where == STATUS)
802 				key = KEYC_MOUSEDRAGEND3_STATUS;
803 			if (where == STATUS_LEFT)
804 				key = KEYC_MOUSEDRAGEND3_STATUS_LEFT;
805 			if (where == STATUS_RIGHT)
806 				key = KEYC_MOUSEDRAGEND3_STATUS_RIGHT;
807 			if (where == STATUS_DEFAULT)
808 				key = KEYC_MOUSEDRAGEND3_STATUS_DEFAULT;
809 			if (where == BORDER)
810 				key = KEYC_MOUSEDRAGEND3_BORDER;
811 			break;
812 		case MOUSE_BUTTON_6:
813 			if (where == PANE)
814 				key = KEYC_MOUSEDRAGEND6_PANE;
815 			if (where == STATUS)
816 				key = KEYC_MOUSEDRAGEND6_STATUS;
817 			if (where == STATUS_LEFT)
818 				key = KEYC_MOUSEDRAGEND6_STATUS_LEFT;
819 			if (where == STATUS_RIGHT)
820 				key = KEYC_MOUSEDRAGEND6_STATUS_RIGHT;
821 			if (where == STATUS_DEFAULT)
822 				key = KEYC_MOUSEDRAGEND6_STATUS_DEFAULT;
823 			if (where == BORDER)
824 				key = KEYC_MOUSEDRAGEND6_BORDER;
825 			break;
826 		case MOUSE_BUTTON_7:
827 			if (where == PANE)
828 				key = KEYC_MOUSEDRAGEND7_PANE;
829 			if (where == STATUS)
830 				key = KEYC_MOUSEDRAGEND7_STATUS;
831 			if (where == STATUS_LEFT)
832 				key = KEYC_MOUSEDRAGEND7_STATUS_LEFT;
833 			if (where == STATUS_RIGHT)
834 				key = KEYC_MOUSEDRAGEND7_STATUS_RIGHT;
835 			if (where == STATUS_DEFAULT)
836 				key = KEYC_MOUSEDRAGEND7_STATUS_DEFAULT;
837 			if (where == BORDER)
838 				key = KEYC_MOUSEDRAGEND7_BORDER;
839 			break;
840 		case MOUSE_BUTTON_8:
841 			if (where == PANE)
842 				key = KEYC_MOUSEDRAGEND8_PANE;
843 			if (where == STATUS)
844 				key = KEYC_MOUSEDRAGEND8_STATUS;
845 			if (where == STATUS_LEFT)
846 				key = KEYC_MOUSEDRAGEND8_STATUS_LEFT;
847 			if (where == STATUS_RIGHT)
848 				key = KEYC_MOUSEDRAGEND8_STATUS_RIGHT;
849 			if (where == STATUS_DEFAULT)
850 				key = KEYC_MOUSEDRAGEND8_STATUS_DEFAULT;
851 			if (where == BORDER)
852 				key = KEYC_MOUSEDRAGEND8_BORDER;
853 			break;
854 		case MOUSE_BUTTON_9:
855 			if (where == PANE)
856 				key = KEYC_MOUSEDRAGEND9_PANE;
857 			if (where == STATUS)
858 				key = KEYC_MOUSEDRAGEND9_STATUS;
859 			if (where == STATUS_LEFT)
860 				key = KEYC_MOUSEDRAGEND9_STATUS_LEFT;
861 			if (where == STATUS_RIGHT)
862 				key = KEYC_MOUSEDRAGEND9_STATUS_RIGHT;
863 			if (where == STATUS_DEFAULT)
864 				key = KEYC_MOUSEDRAGEND9_STATUS_DEFAULT;
865 			if (where == BORDER)
866 				key = KEYC_MOUSEDRAGEND9_BORDER;
867 			break;
868 		case MOUSE_BUTTON_10:
869 			if (where == PANE)
870 				key = KEYC_MOUSEDRAGEND10_PANE;
871 			if (where == STATUS)
872 				key = KEYC_MOUSEDRAGEND10_STATUS;
873 			if (where == STATUS_LEFT)
874 				key = KEYC_MOUSEDRAGEND10_STATUS_LEFT;
875 			if (where == STATUS_RIGHT)
876 				key = KEYC_MOUSEDRAGEND10_STATUS_RIGHT;
877 			if (where == STATUS_DEFAULT)
878 				key = KEYC_MOUSEDRAGEND10_STATUS_DEFAULT;
879 			if (where == BORDER)
880 				key = KEYC_MOUSEDRAGEND10_BORDER;
881 			break;
882 		case MOUSE_BUTTON_11:
883 			if (where == PANE)
884 				key = KEYC_MOUSEDRAGEND11_PANE;
885 			if (where == STATUS)
886 				key = KEYC_MOUSEDRAGEND11_STATUS;
887 			if (where == STATUS_LEFT)
888 				key = KEYC_MOUSEDRAGEND11_STATUS_LEFT;
889 			if (where == STATUS_RIGHT)
890 				key = KEYC_MOUSEDRAGEND11_STATUS_RIGHT;
891 			if (where == STATUS_DEFAULT)
892 				key = KEYC_MOUSEDRAGEND11_STATUS_DEFAULT;
893 			if (where == BORDER)
894 				key = KEYC_MOUSEDRAGEND11_BORDER;
895 			break;
896 		default:
897 			key = KEYC_MOUSE;
898 			break;
899 		}
900 		c->tty.mouse_drag_flag = 0;
901 		goto out;
902 	}
903 
904 	/* Convert to a key binding. */
905 	key = KEYC_UNKNOWN;
906 	switch (type) {
907 	case NOTYPE:
908 		break;
909 	case MOVE:
910 		if (where == PANE)
911 			key = KEYC_MOUSEMOVE_PANE;
912 		if (where == STATUS)
913 			key = KEYC_MOUSEMOVE_STATUS;
914 		if (where == STATUS_LEFT)
915 			key = KEYC_MOUSEMOVE_STATUS_LEFT;
916 		if (where == STATUS_RIGHT)
917 			key = KEYC_MOUSEMOVE_STATUS_RIGHT;
918 		if (where == STATUS_DEFAULT)
919 			key = KEYC_MOUSEMOVE_STATUS_DEFAULT;
920 		if (where == BORDER)
921 			key = KEYC_MOUSEMOVE_BORDER;
922 		break;
923 	case DRAG:
924 		if (c->tty.mouse_drag_update != NULL)
925 			key = KEYC_DRAGGING;
926 		else {
927 			switch (MOUSE_BUTTONS(b)) {
928 			case MOUSE_BUTTON_1:
929 				if (where == PANE)
930 					key = KEYC_MOUSEDRAG1_PANE;
931 				if (where == STATUS)
932 					key = KEYC_MOUSEDRAG1_STATUS;
933 				if (where == STATUS_LEFT)
934 					key = KEYC_MOUSEDRAG1_STATUS_LEFT;
935 				if (where == STATUS_RIGHT)
936 					key = KEYC_MOUSEDRAG1_STATUS_RIGHT;
937 				if (where == STATUS_DEFAULT)
938 					key = KEYC_MOUSEDRAG1_STATUS_DEFAULT;
939 				if (where == BORDER)
940 					key = KEYC_MOUSEDRAG1_BORDER;
941 				break;
942 			case MOUSE_BUTTON_2:
943 				if (where == PANE)
944 					key = KEYC_MOUSEDRAG2_PANE;
945 				if (where == STATUS)
946 					key = KEYC_MOUSEDRAG2_STATUS;
947 				if (where == STATUS_LEFT)
948 					key = KEYC_MOUSEDRAG2_STATUS_LEFT;
949 				if (where == STATUS_RIGHT)
950 					key = KEYC_MOUSEDRAG2_STATUS_RIGHT;
951 				if (where == STATUS_DEFAULT)
952 					key = KEYC_MOUSEDRAG2_STATUS_DEFAULT;
953 				if (where == BORDER)
954 					key = KEYC_MOUSEDRAG2_BORDER;
955 				break;
956 			case MOUSE_BUTTON_3:
957 				if (where == PANE)
958 					key = KEYC_MOUSEDRAG3_PANE;
959 				if (where == STATUS)
960 					key = KEYC_MOUSEDRAG3_STATUS;
961 				if (where == STATUS_LEFT)
962 					key = KEYC_MOUSEDRAG3_STATUS_LEFT;
963 				if (where == STATUS_RIGHT)
964 					key = KEYC_MOUSEDRAG3_STATUS_RIGHT;
965 				if (where == STATUS_DEFAULT)
966 					key = KEYC_MOUSEDRAG3_STATUS_DEFAULT;
967 				if (where == BORDER)
968 					key = KEYC_MOUSEDRAG3_BORDER;
969 				break;
970 			case MOUSE_BUTTON_6:
971 				if (where == PANE)
972 					key = KEYC_MOUSEDRAG6_PANE;
973 				if (where == STATUS)
974 					key = KEYC_MOUSEDRAG6_STATUS;
975 				if (where == STATUS_LEFT)
976 					key = KEYC_MOUSEDRAG6_STATUS_LEFT;
977 				if (where == STATUS_RIGHT)
978 					key = KEYC_MOUSEDRAG6_STATUS_RIGHT;
979 				if (where == STATUS_DEFAULT)
980 					key = KEYC_MOUSEDRAG6_STATUS_DEFAULT;
981 				if (where == BORDER)
982 					key = KEYC_MOUSEDRAG6_BORDER;
983 				break;
984 			case MOUSE_BUTTON_7:
985 				if (where == PANE)
986 					key = KEYC_MOUSEDRAG7_PANE;
987 				if (where == STATUS)
988 					key = KEYC_MOUSEDRAG7_STATUS;
989 				if (where == STATUS_LEFT)
990 					key = KEYC_MOUSEDRAG7_STATUS_LEFT;
991 				if (where == STATUS_RIGHT)
992 					key = KEYC_MOUSEDRAG7_STATUS_RIGHT;
993 				if (where == STATUS_DEFAULT)
994 					key = KEYC_MOUSEDRAG7_STATUS_DEFAULT;
995 				if (where == BORDER)
996 					key = KEYC_MOUSEDRAG7_BORDER;
997 				break;
998 			case MOUSE_BUTTON_8:
999 				if (where == PANE)
1000 					key = KEYC_MOUSEDRAG8_PANE;
1001 				if (where == STATUS)
1002 					key = KEYC_MOUSEDRAG8_STATUS;
1003 				if (where == STATUS_LEFT)
1004 					key = KEYC_MOUSEDRAG8_STATUS_LEFT;
1005 				if (where == STATUS_RIGHT)
1006 					key = KEYC_MOUSEDRAG8_STATUS_RIGHT;
1007 				if (where == STATUS_DEFAULT)
1008 					key = KEYC_MOUSEDRAG8_STATUS_DEFAULT;
1009 				if (where == BORDER)
1010 					key = KEYC_MOUSEDRAG8_BORDER;
1011 				break;
1012 			case MOUSE_BUTTON_9:
1013 				if (where == PANE)
1014 					key = KEYC_MOUSEDRAG9_PANE;
1015 				if (where == STATUS)
1016 					key = KEYC_MOUSEDRAG9_STATUS;
1017 				if (where == STATUS_LEFT)
1018 					key = KEYC_MOUSEDRAG9_STATUS_LEFT;
1019 				if (where == STATUS_RIGHT)
1020 					key = KEYC_MOUSEDRAG9_STATUS_RIGHT;
1021 				if (where == STATUS_DEFAULT)
1022 					key = KEYC_MOUSEDRAG9_STATUS_DEFAULT;
1023 				if (where == BORDER)
1024 					key = KEYC_MOUSEDRAG9_BORDER;
1025 				break;
1026 			case MOUSE_BUTTON_10:
1027 				if (where == PANE)
1028 					key = KEYC_MOUSEDRAG10_PANE;
1029 				if (where == STATUS)
1030 					key = KEYC_MOUSEDRAG10_STATUS;
1031 				if (where == STATUS_LEFT)
1032 					key = KEYC_MOUSEDRAG10_STATUS_LEFT;
1033 				if (where == STATUS_RIGHT)
1034 					key = KEYC_MOUSEDRAG10_STATUS_RIGHT;
1035 				if (where == STATUS_DEFAULT)
1036 					key = KEYC_MOUSEDRAG10_STATUS_DEFAULT;
1037 				if (where == BORDER)
1038 					key = KEYC_MOUSEDRAG10_BORDER;
1039 				break;
1040 			case MOUSE_BUTTON_11:
1041 				if (where == PANE)
1042 					key = KEYC_MOUSEDRAG11_PANE;
1043 				if (where == STATUS)
1044 					key = KEYC_MOUSEDRAG11_STATUS;
1045 				if (where == STATUS_LEFT)
1046 					key = KEYC_MOUSEDRAG11_STATUS_LEFT;
1047 				if (where == STATUS_RIGHT)
1048 					key = KEYC_MOUSEDRAG11_STATUS_RIGHT;
1049 				if (where == STATUS_DEFAULT)
1050 					key = KEYC_MOUSEDRAG11_STATUS_DEFAULT;
1051 				if (where == BORDER)
1052 					key = KEYC_MOUSEDRAG11_BORDER;
1053 				break;
1054 			}
1055 		}
1056 
1057 		/*
1058 		 * Begin a drag by setting the flag to a non-zero value that
1059 		 * corresponds to the mouse button in use.
1060 		 */
1061 		c->tty.mouse_drag_flag = MOUSE_BUTTONS(b) + 1;
1062 		break;
1063 	case WHEEL:
1064 		if (MOUSE_BUTTONS(b) == MOUSE_WHEEL_UP) {
1065 			if (where == PANE)
1066 				key = KEYC_WHEELUP_PANE;
1067 			if (where == STATUS)
1068 				key = KEYC_WHEELUP_STATUS;
1069 			if (where == STATUS_LEFT)
1070 				key = KEYC_WHEELUP_STATUS_LEFT;
1071 			if (where == STATUS_RIGHT)
1072 				key = KEYC_WHEELUP_STATUS_RIGHT;
1073 			if (where == STATUS_DEFAULT)
1074 				key = KEYC_WHEELUP_STATUS_DEFAULT;
1075 			if (where == BORDER)
1076 				key = KEYC_WHEELUP_BORDER;
1077 		} else {
1078 			if (where == PANE)
1079 				key = KEYC_WHEELDOWN_PANE;
1080 			if (where == STATUS)
1081 				key = KEYC_WHEELDOWN_STATUS;
1082 			if (where == STATUS_LEFT)
1083 				key = KEYC_WHEELDOWN_STATUS_LEFT;
1084 			if (where == STATUS_RIGHT)
1085 				key = KEYC_WHEELDOWN_STATUS_RIGHT;
1086 			if (where == STATUS_DEFAULT)
1087 				key = KEYC_WHEELDOWN_STATUS_DEFAULT;
1088 			if (where == BORDER)
1089 				key = KEYC_WHEELDOWN_BORDER;
1090 		}
1091 		break;
1092 	case UP:
1093 		switch (MOUSE_BUTTONS(b)) {
1094 		case MOUSE_BUTTON_1:
1095 			if (where == PANE)
1096 				key = KEYC_MOUSEUP1_PANE;
1097 			if (where == STATUS)
1098 				key = KEYC_MOUSEUP1_STATUS;
1099 			if (where == STATUS_LEFT)
1100 				key = KEYC_MOUSEUP1_STATUS_LEFT;
1101 			if (where == STATUS_RIGHT)
1102 				key = KEYC_MOUSEUP1_STATUS_RIGHT;
1103 			if (where == STATUS_DEFAULT)
1104 				key = KEYC_MOUSEUP1_STATUS_DEFAULT;
1105 			if (where == BORDER)
1106 				key = KEYC_MOUSEUP1_BORDER;
1107 			break;
1108 		case MOUSE_BUTTON_2:
1109 			if (where == PANE)
1110 				key = KEYC_MOUSEUP2_PANE;
1111 			if (where == STATUS)
1112 				key = KEYC_MOUSEUP2_STATUS;
1113 			if (where == STATUS_LEFT)
1114 				key = KEYC_MOUSEUP2_STATUS_LEFT;
1115 			if (where == STATUS_RIGHT)
1116 				key = KEYC_MOUSEUP2_STATUS_RIGHT;
1117 			if (where == STATUS_DEFAULT)
1118 				key = KEYC_MOUSEUP2_STATUS_DEFAULT;
1119 			if (where == BORDER)
1120 				key = KEYC_MOUSEUP2_BORDER;
1121 			break;
1122 		case MOUSE_BUTTON_3:
1123 			if (where == PANE)
1124 				key = KEYC_MOUSEUP3_PANE;
1125 			if (where == STATUS)
1126 				key = KEYC_MOUSEUP3_STATUS;
1127 			if (where == STATUS_LEFT)
1128 				key = KEYC_MOUSEUP3_STATUS_LEFT;
1129 			if (where == STATUS_RIGHT)
1130 				key = KEYC_MOUSEUP3_STATUS_RIGHT;
1131 			if (where == STATUS_DEFAULT)
1132 				key = KEYC_MOUSEUP3_STATUS_DEFAULT;
1133 			if (where == BORDER)
1134 				key = KEYC_MOUSEUP3_BORDER;
1135 			break;
1136 		case MOUSE_BUTTON_6:
1137 			if (where == PANE)
1138 				key = KEYC_MOUSEUP6_PANE;
1139 			if (where == STATUS)
1140 				key = KEYC_MOUSEUP6_STATUS;
1141 			if (where == STATUS_LEFT)
1142 				key = KEYC_MOUSEUP6_STATUS_LEFT;
1143 			if (where == STATUS_RIGHT)
1144 				key = KEYC_MOUSEUP6_STATUS_RIGHT;
1145 			if (where == STATUS_DEFAULT)
1146 				key = KEYC_MOUSEUP6_STATUS_DEFAULT;
1147 			if (where == BORDER)
1148 				key = KEYC_MOUSEUP6_BORDER;
1149 			break;
1150 		case MOUSE_BUTTON_7:
1151 			if (where == PANE)
1152 				key = KEYC_MOUSEUP7_PANE;
1153 			if (where == STATUS)
1154 				key = KEYC_MOUSEUP7_STATUS;
1155 			if (where == STATUS_LEFT)
1156 				key = KEYC_MOUSEUP7_STATUS_LEFT;
1157 			if (where == STATUS_RIGHT)
1158 				key = KEYC_MOUSEUP7_STATUS_RIGHT;
1159 			if (where == STATUS_DEFAULT)
1160 				key = KEYC_MOUSEUP7_STATUS_DEFAULT;
1161 			if (where == BORDER)
1162 				key = KEYC_MOUSEUP7_BORDER;
1163 			break;
1164 		case MOUSE_BUTTON_8:
1165 			if (where == PANE)
1166 				key = KEYC_MOUSEUP8_PANE;
1167 			if (where == STATUS)
1168 				key = KEYC_MOUSEUP8_STATUS;
1169 			if (where == STATUS_LEFT)
1170 				key = KEYC_MOUSEUP8_STATUS_LEFT;
1171 			if (where == STATUS_RIGHT)
1172 				key = KEYC_MOUSEUP8_STATUS_RIGHT;
1173 			if (where == STATUS_DEFAULT)
1174 				key = KEYC_MOUSEUP8_STATUS_DEFAULT;
1175 			if (where == BORDER)
1176 				key = KEYC_MOUSEUP8_BORDER;
1177 			break;
1178 		case MOUSE_BUTTON_9:
1179 			if (where == PANE)
1180 				key = KEYC_MOUSEUP9_PANE;
1181 			if (where == STATUS)
1182 				key = KEYC_MOUSEUP9_STATUS;
1183 			if (where == STATUS_LEFT)
1184 				key = KEYC_MOUSEUP9_STATUS_LEFT;
1185 			if (where == STATUS_RIGHT)
1186 				key = KEYC_MOUSEUP9_STATUS_RIGHT;
1187 			if (where == STATUS_DEFAULT)
1188 				key = KEYC_MOUSEUP9_STATUS_DEFAULT;
1189 			if (where == BORDER)
1190 				key = KEYC_MOUSEUP9_BORDER;
1191 			break;
1192 		case MOUSE_BUTTON_10:
1193 			if (where == PANE)
1194 				key = KEYC_MOUSEUP1_PANE;
1195 			if (where == STATUS)
1196 				key = KEYC_MOUSEUP1_STATUS;
1197 			if (where == STATUS_LEFT)
1198 				key = KEYC_MOUSEUP1_STATUS_LEFT;
1199 			if (where == STATUS_RIGHT)
1200 				key = KEYC_MOUSEUP1_STATUS_RIGHT;
1201 			if (where == STATUS_DEFAULT)
1202 				key = KEYC_MOUSEUP1_STATUS_DEFAULT;
1203 			if (where == BORDER)
1204 				key = KEYC_MOUSEUP1_BORDER;
1205 			break;
1206 		case MOUSE_BUTTON_11:
1207 			if (where == PANE)
1208 				key = KEYC_MOUSEUP11_PANE;
1209 			if (where == STATUS)
1210 				key = KEYC_MOUSEUP11_STATUS;
1211 			if (where == STATUS_LEFT)
1212 				key = KEYC_MOUSEUP11_STATUS_LEFT;
1213 			if (where == STATUS_RIGHT)
1214 				key = KEYC_MOUSEUP11_STATUS_RIGHT;
1215 			if (where == STATUS_DEFAULT)
1216 				key = KEYC_MOUSEUP11_STATUS_DEFAULT;
1217 			if (where == BORDER)
1218 				key = KEYC_MOUSEUP11_BORDER;
1219 			break;
1220 		}
1221 		break;
1222 	case DOWN:
1223 		switch (MOUSE_BUTTONS(b)) {
1224 		case MOUSE_BUTTON_1:
1225 			if (where == PANE)
1226 				key = KEYC_MOUSEDOWN1_PANE;
1227 			if (where == STATUS)
1228 				key = KEYC_MOUSEDOWN1_STATUS;
1229 			if (where == STATUS_LEFT)
1230 				key = KEYC_MOUSEDOWN1_STATUS_LEFT;
1231 			if (where == STATUS_RIGHT)
1232 				key = KEYC_MOUSEDOWN1_STATUS_RIGHT;
1233 			if (where == STATUS_DEFAULT)
1234 				key = KEYC_MOUSEDOWN1_STATUS_DEFAULT;
1235 			if (where == BORDER)
1236 				key = KEYC_MOUSEDOWN1_BORDER;
1237 			break;
1238 		case MOUSE_BUTTON_2:
1239 			if (where == PANE)
1240 				key = KEYC_MOUSEDOWN2_PANE;
1241 			if (where == STATUS)
1242 				key = KEYC_MOUSEDOWN2_STATUS;
1243 			if (where == STATUS_LEFT)
1244 				key = KEYC_MOUSEDOWN2_STATUS_LEFT;
1245 			if (where == STATUS_RIGHT)
1246 				key = KEYC_MOUSEDOWN2_STATUS_RIGHT;
1247 			if (where == STATUS_DEFAULT)
1248 				key = KEYC_MOUSEDOWN2_STATUS_DEFAULT;
1249 			if (where == BORDER)
1250 				key = KEYC_MOUSEDOWN2_BORDER;
1251 			break;
1252 		case MOUSE_BUTTON_3:
1253 			if (where == PANE)
1254 				key = KEYC_MOUSEDOWN3_PANE;
1255 			if (where == STATUS)
1256 				key = KEYC_MOUSEDOWN3_STATUS;
1257 			if (where == STATUS_LEFT)
1258 				key = KEYC_MOUSEDOWN3_STATUS_LEFT;
1259 			if (where == STATUS_RIGHT)
1260 				key = KEYC_MOUSEDOWN3_STATUS_RIGHT;
1261 			if (where == STATUS_DEFAULT)
1262 				key = KEYC_MOUSEDOWN3_STATUS_DEFAULT;
1263 			if (where == BORDER)
1264 				key = KEYC_MOUSEDOWN3_BORDER;
1265 			break;
1266 		case MOUSE_BUTTON_6:
1267 			if (where == PANE)
1268 				key = KEYC_MOUSEDOWN6_PANE;
1269 			if (where == STATUS)
1270 				key = KEYC_MOUSEDOWN6_STATUS;
1271 			if (where == STATUS_LEFT)
1272 				key = KEYC_MOUSEDOWN6_STATUS_LEFT;
1273 			if (where == STATUS_RIGHT)
1274 				key = KEYC_MOUSEDOWN6_STATUS_RIGHT;
1275 			if (where == STATUS_DEFAULT)
1276 				key = KEYC_MOUSEDOWN6_STATUS_DEFAULT;
1277 			if (where == BORDER)
1278 				key = KEYC_MOUSEDOWN6_BORDER;
1279 			break;
1280 		case MOUSE_BUTTON_7:
1281 			if (where == PANE)
1282 				key = KEYC_MOUSEDOWN7_PANE;
1283 			if (where == STATUS)
1284 				key = KEYC_MOUSEDOWN7_STATUS;
1285 			if (where == STATUS_LEFT)
1286 				key = KEYC_MOUSEDOWN7_STATUS_LEFT;
1287 			if (where == STATUS_RIGHT)
1288 				key = KEYC_MOUSEDOWN7_STATUS_RIGHT;
1289 			if (where == STATUS_DEFAULT)
1290 				key = KEYC_MOUSEDOWN7_STATUS_DEFAULT;
1291 			if (where == BORDER)
1292 				key = KEYC_MOUSEDOWN7_BORDER;
1293 			break;
1294 		case MOUSE_BUTTON_8:
1295 			if (where == PANE)
1296 				key = KEYC_MOUSEDOWN8_PANE;
1297 			if (where == STATUS)
1298 				key = KEYC_MOUSEDOWN8_STATUS;
1299 			if (where == STATUS_LEFT)
1300 				key = KEYC_MOUSEDOWN8_STATUS_LEFT;
1301 			if (where == STATUS_RIGHT)
1302 				key = KEYC_MOUSEDOWN8_STATUS_RIGHT;
1303 			if (where == STATUS_DEFAULT)
1304 				key = KEYC_MOUSEDOWN8_STATUS_DEFAULT;
1305 			if (where == BORDER)
1306 				key = KEYC_MOUSEDOWN8_BORDER;
1307 			break;
1308 		case MOUSE_BUTTON_9:
1309 			if (where == PANE)
1310 				key = KEYC_MOUSEDOWN9_PANE;
1311 			if (where == STATUS)
1312 				key = KEYC_MOUSEDOWN9_STATUS;
1313 			if (where == STATUS_LEFT)
1314 				key = KEYC_MOUSEDOWN9_STATUS_LEFT;
1315 			if (where == STATUS_RIGHT)
1316 				key = KEYC_MOUSEDOWN9_STATUS_RIGHT;
1317 			if (where == STATUS_DEFAULT)
1318 				key = KEYC_MOUSEDOWN9_STATUS_DEFAULT;
1319 			if (where == BORDER)
1320 				key = KEYC_MOUSEDOWN9_BORDER;
1321 			break;
1322 		case MOUSE_BUTTON_10:
1323 			if (where == PANE)
1324 				key = KEYC_MOUSEDOWN10_PANE;
1325 			if (where == STATUS)
1326 				key = KEYC_MOUSEDOWN10_STATUS;
1327 			if (where == STATUS_LEFT)
1328 				key = KEYC_MOUSEDOWN10_STATUS_LEFT;
1329 			if (where == STATUS_RIGHT)
1330 				key = KEYC_MOUSEDOWN10_STATUS_RIGHT;
1331 			if (where == STATUS_DEFAULT)
1332 				key = KEYC_MOUSEDOWN10_STATUS_DEFAULT;
1333 			if (where == BORDER)
1334 				key = KEYC_MOUSEDOWN10_BORDER;
1335 			break;
1336 		case MOUSE_BUTTON_11:
1337 			if (where == PANE)
1338 				key = KEYC_MOUSEDOWN11_PANE;
1339 			if (where == STATUS)
1340 				key = KEYC_MOUSEDOWN11_STATUS;
1341 			if (where == STATUS_LEFT)
1342 				key = KEYC_MOUSEDOWN11_STATUS_LEFT;
1343 			if (where == STATUS_RIGHT)
1344 				key = KEYC_MOUSEDOWN11_STATUS_RIGHT;
1345 			if (where == STATUS_DEFAULT)
1346 				key = KEYC_MOUSEDOWN11_STATUS_DEFAULT;
1347 			if (where == BORDER)
1348 				key = KEYC_MOUSEDOWN11_BORDER;
1349 			break;
1350 		}
1351 		break;
1352 	case SECOND:
1353 		switch (MOUSE_BUTTONS(b)) {
1354 		case MOUSE_BUTTON_1:
1355 			if (where == PANE)
1356 				key = KEYC_SECONDCLICK1_PANE;
1357 			if (where == STATUS)
1358 				key = KEYC_SECONDCLICK1_STATUS;
1359 			if (where == STATUS_LEFT)
1360 				key = KEYC_SECONDCLICK1_STATUS_LEFT;
1361 			if (where == STATUS_RIGHT)
1362 				key = KEYC_SECONDCLICK1_STATUS_RIGHT;
1363 			if (where == STATUS_DEFAULT)
1364 				key = KEYC_SECONDCLICK1_STATUS_DEFAULT;
1365 			if (where == BORDER)
1366 				key = KEYC_SECONDCLICK1_BORDER;
1367 			break;
1368 		case MOUSE_BUTTON_2:
1369 			if (where == PANE)
1370 				key = KEYC_SECONDCLICK2_PANE;
1371 			if (where == STATUS)
1372 				key = KEYC_SECONDCLICK2_STATUS;
1373 			if (where == STATUS_LEFT)
1374 				key = KEYC_SECONDCLICK2_STATUS_LEFT;
1375 			if (where == STATUS_RIGHT)
1376 				key = KEYC_SECONDCLICK2_STATUS_RIGHT;
1377 			if (where == STATUS_DEFAULT)
1378 				key = KEYC_SECONDCLICK2_STATUS_DEFAULT;
1379 			if (where == BORDER)
1380 				key = KEYC_SECONDCLICK2_BORDER;
1381 			break;
1382 		case MOUSE_BUTTON_3:
1383 			if (where == PANE)
1384 				key = KEYC_SECONDCLICK3_PANE;
1385 			if (where == STATUS)
1386 				key = KEYC_SECONDCLICK3_STATUS;
1387 			if (where == STATUS_LEFT)
1388 				key = KEYC_SECONDCLICK3_STATUS_LEFT;
1389 			if (where == STATUS_RIGHT)
1390 				key = KEYC_SECONDCLICK3_STATUS_RIGHT;
1391 			if (where == STATUS_DEFAULT)
1392 				key = KEYC_SECONDCLICK3_STATUS_DEFAULT;
1393 			if (where == BORDER)
1394 				key = KEYC_SECONDCLICK3_BORDER;
1395 			break;
1396 		case MOUSE_BUTTON_6:
1397 			if (where == PANE)
1398 				key = KEYC_SECONDCLICK6_PANE;
1399 			if (where == STATUS)
1400 				key = KEYC_SECONDCLICK6_STATUS;
1401 			if (where == STATUS_LEFT)
1402 				key = KEYC_SECONDCLICK6_STATUS_LEFT;
1403 			if (where == STATUS_RIGHT)
1404 				key = KEYC_SECONDCLICK6_STATUS_RIGHT;
1405 			if (where == STATUS_DEFAULT)
1406 				key = KEYC_SECONDCLICK6_STATUS_DEFAULT;
1407 			if (where == BORDER)
1408 				key = KEYC_SECONDCLICK6_BORDER;
1409 			break;
1410 		case MOUSE_BUTTON_7:
1411 			if (where == PANE)
1412 				key = KEYC_SECONDCLICK7_PANE;
1413 			if (where == STATUS)
1414 				key = KEYC_SECONDCLICK7_STATUS;
1415 			if (where == STATUS_LEFT)
1416 				key = KEYC_SECONDCLICK7_STATUS_LEFT;
1417 			if (where == STATUS_RIGHT)
1418 				key = KEYC_SECONDCLICK7_STATUS_RIGHT;
1419 			if (where == STATUS_DEFAULT)
1420 				key = KEYC_SECONDCLICK7_STATUS_DEFAULT;
1421 			if (where == BORDER)
1422 				key = KEYC_SECONDCLICK7_BORDER;
1423 			break;
1424 		case MOUSE_BUTTON_8:
1425 			if (where == PANE)
1426 				key = KEYC_SECONDCLICK8_PANE;
1427 			if (where == STATUS)
1428 				key = KEYC_SECONDCLICK8_STATUS;
1429 			if (where == STATUS_LEFT)
1430 				key = KEYC_SECONDCLICK8_STATUS_LEFT;
1431 			if (where == STATUS_RIGHT)
1432 				key = KEYC_SECONDCLICK8_STATUS_RIGHT;
1433 			if (where == STATUS_DEFAULT)
1434 				key = KEYC_SECONDCLICK8_STATUS_DEFAULT;
1435 			if (where == BORDER)
1436 				key = KEYC_SECONDCLICK8_BORDER;
1437 			break;
1438 		case MOUSE_BUTTON_9:
1439 			if (where == PANE)
1440 				key = KEYC_SECONDCLICK9_PANE;
1441 			if (where == STATUS)
1442 				key = KEYC_SECONDCLICK9_STATUS;
1443 			if (where == STATUS_LEFT)
1444 				key = KEYC_SECONDCLICK9_STATUS_LEFT;
1445 			if (where == STATUS_RIGHT)
1446 				key = KEYC_SECONDCLICK9_STATUS_RIGHT;
1447 			if (where == STATUS_DEFAULT)
1448 				key = KEYC_SECONDCLICK9_STATUS_DEFAULT;
1449 			if (where == BORDER)
1450 				key = KEYC_SECONDCLICK9_BORDER;
1451 			break;
1452 		case MOUSE_BUTTON_10:
1453 			if (where == PANE)
1454 				key = KEYC_SECONDCLICK10_PANE;
1455 			if (where == STATUS)
1456 				key = KEYC_SECONDCLICK10_STATUS;
1457 			if (where == STATUS_LEFT)
1458 				key = KEYC_SECONDCLICK10_STATUS_LEFT;
1459 			if (where == STATUS_RIGHT)
1460 				key = KEYC_SECONDCLICK10_STATUS_RIGHT;
1461 			if (where == STATUS_DEFAULT)
1462 				key = KEYC_SECONDCLICK10_STATUS_DEFAULT;
1463 			if (where == BORDER)
1464 				key = KEYC_SECONDCLICK10_BORDER;
1465 			break;
1466 		case MOUSE_BUTTON_11:
1467 			if (where == PANE)
1468 				key = KEYC_SECONDCLICK11_PANE;
1469 			if (where == STATUS)
1470 				key = KEYC_SECONDCLICK11_STATUS;
1471 			if (where == STATUS_LEFT)
1472 				key = KEYC_SECONDCLICK11_STATUS_LEFT;
1473 			if (where == STATUS_RIGHT)
1474 				key = KEYC_SECONDCLICK11_STATUS_RIGHT;
1475 			if (where == STATUS_DEFAULT)
1476 				key = KEYC_SECONDCLICK11_STATUS_DEFAULT;
1477 			if (where == BORDER)
1478 				key = KEYC_SECONDCLICK11_BORDER;
1479 			break;
1480 		}
1481 		break;
1482 	case DOUBLE:
1483 		switch (MOUSE_BUTTONS(b)) {
1484 		case MOUSE_BUTTON_1:
1485 			if (where == PANE)
1486 				key = KEYC_DOUBLECLICK1_PANE;
1487 			if (where == STATUS)
1488 				key = KEYC_DOUBLECLICK1_STATUS;
1489 			if (where == STATUS_LEFT)
1490 				key = KEYC_DOUBLECLICK1_STATUS_LEFT;
1491 			if (where == STATUS_RIGHT)
1492 				key = KEYC_DOUBLECLICK1_STATUS_RIGHT;
1493 			if (where == STATUS_DEFAULT)
1494 				key = KEYC_DOUBLECLICK1_STATUS_DEFAULT;
1495 			if (where == BORDER)
1496 				key = KEYC_DOUBLECLICK1_BORDER;
1497 			break;
1498 		case MOUSE_BUTTON_2:
1499 			if (where == PANE)
1500 				key = KEYC_DOUBLECLICK2_PANE;
1501 			if (where == STATUS)
1502 				key = KEYC_DOUBLECLICK2_STATUS;
1503 			if (where == STATUS_LEFT)
1504 				key = KEYC_DOUBLECLICK2_STATUS_LEFT;
1505 			if (where == STATUS_RIGHT)
1506 				key = KEYC_DOUBLECLICK2_STATUS_RIGHT;
1507 			if (where == STATUS_DEFAULT)
1508 				key = KEYC_DOUBLECLICK2_STATUS_DEFAULT;
1509 			if (where == BORDER)
1510 				key = KEYC_DOUBLECLICK2_BORDER;
1511 			break;
1512 		case MOUSE_BUTTON_3:
1513 			if (where == PANE)
1514 				key = KEYC_DOUBLECLICK3_PANE;
1515 			if (where == STATUS)
1516 				key = KEYC_DOUBLECLICK3_STATUS;
1517 			if (where == STATUS_LEFT)
1518 				key = KEYC_DOUBLECLICK3_STATUS_LEFT;
1519 			if (where == STATUS_RIGHT)
1520 				key = KEYC_DOUBLECLICK3_STATUS_RIGHT;
1521 			if (where == STATUS_DEFAULT)
1522 				key = KEYC_DOUBLECLICK3_STATUS_DEFAULT;
1523 			if (where == BORDER)
1524 				key = KEYC_DOUBLECLICK3_BORDER;
1525 			break;
1526 		case MOUSE_BUTTON_6:
1527 			if (where == PANE)
1528 				key = KEYC_DOUBLECLICK6_PANE;
1529 			if (where == STATUS)
1530 				key = KEYC_DOUBLECLICK6_STATUS;
1531 			if (where == STATUS_LEFT)
1532 				key = KEYC_DOUBLECLICK6_STATUS_LEFT;
1533 			if (where == STATUS_RIGHT)
1534 				key = KEYC_DOUBLECLICK6_STATUS_RIGHT;
1535 			if (where == STATUS_DEFAULT)
1536 				key = KEYC_DOUBLECLICK6_STATUS_DEFAULT;
1537 			if (where == BORDER)
1538 				key = KEYC_DOUBLECLICK6_BORDER;
1539 			break;
1540 		case MOUSE_BUTTON_7:
1541 			if (where == PANE)
1542 				key = KEYC_DOUBLECLICK7_PANE;
1543 			if (where == STATUS)
1544 				key = KEYC_DOUBLECLICK7_STATUS;
1545 			if (where == STATUS_LEFT)
1546 				key = KEYC_DOUBLECLICK7_STATUS_LEFT;
1547 			if (where == STATUS_RIGHT)
1548 				key = KEYC_DOUBLECLICK7_STATUS_RIGHT;
1549 			if (where == STATUS_DEFAULT)
1550 				key = KEYC_DOUBLECLICK7_STATUS_DEFAULT;
1551 			if (where == BORDER)
1552 				key = KEYC_DOUBLECLICK7_BORDER;
1553 			break;
1554 		case MOUSE_BUTTON_8:
1555 			if (where == PANE)
1556 				key = KEYC_DOUBLECLICK8_PANE;
1557 			if (where == STATUS)
1558 				key = KEYC_DOUBLECLICK8_STATUS;
1559 			if (where == STATUS_LEFT)
1560 				key = KEYC_DOUBLECLICK8_STATUS_LEFT;
1561 			if (where == STATUS_RIGHT)
1562 				key = KEYC_DOUBLECLICK8_STATUS_RIGHT;
1563 			if (where == STATUS_DEFAULT)
1564 				key = KEYC_DOUBLECLICK8_STATUS_DEFAULT;
1565 			if (where == BORDER)
1566 				key = KEYC_DOUBLECLICK8_BORDER;
1567 			break;
1568 		case MOUSE_BUTTON_9:
1569 			if (where == PANE)
1570 				key = KEYC_DOUBLECLICK9_PANE;
1571 			if (where == STATUS)
1572 				key = KEYC_DOUBLECLICK9_STATUS;
1573 			if (where == STATUS_LEFT)
1574 				key = KEYC_DOUBLECLICK9_STATUS_LEFT;
1575 			if (where == STATUS_RIGHT)
1576 				key = KEYC_DOUBLECLICK9_STATUS_RIGHT;
1577 			if (where == STATUS_DEFAULT)
1578 				key = KEYC_DOUBLECLICK9_STATUS_DEFAULT;
1579 			if (where == BORDER)
1580 				key = KEYC_DOUBLECLICK9_BORDER;
1581 			break;
1582 		case MOUSE_BUTTON_10:
1583 			if (where == PANE)
1584 				key = KEYC_DOUBLECLICK10_PANE;
1585 			if (where == STATUS)
1586 				key = KEYC_DOUBLECLICK10_STATUS;
1587 			if (where == STATUS_LEFT)
1588 				key = KEYC_DOUBLECLICK10_STATUS_LEFT;
1589 			if (where == STATUS_RIGHT)
1590 				key = KEYC_DOUBLECLICK10_STATUS_RIGHT;
1591 			if (where == STATUS_DEFAULT)
1592 				key = KEYC_DOUBLECLICK10_STATUS_DEFAULT;
1593 			if (where == BORDER)
1594 				key = KEYC_DOUBLECLICK10_BORDER;
1595 			break;
1596 		case MOUSE_BUTTON_11:
1597 			if (where == PANE)
1598 				key = KEYC_DOUBLECLICK11_PANE;
1599 			if (where == STATUS)
1600 				key = KEYC_DOUBLECLICK11_STATUS;
1601 			if (where == STATUS_LEFT)
1602 				key = KEYC_DOUBLECLICK11_STATUS_LEFT;
1603 			if (where == STATUS_RIGHT)
1604 				key = KEYC_DOUBLECLICK11_STATUS_RIGHT;
1605 			if (where == STATUS_DEFAULT)
1606 				key = KEYC_DOUBLECLICK11_STATUS_DEFAULT;
1607 			if (where == BORDER)
1608 				key = KEYC_DOUBLECLICK11_BORDER;
1609 			break;
1610 		}
1611 		break;
1612 	case TRIPLE:
1613 		switch (MOUSE_BUTTONS(b)) {
1614 		case MOUSE_BUTTON_1:
1615 			if (where == PANE)
1616 				key = KEYC_TRIPLECLICK1_PANE;
1617 			if (where == STATUS)
1618 				key = KEYC_TRIPLECLICK1_STATUS;
1619 			if (where == STATUS_LEFT)
1620 				key = KEYC_TRIPLECLICK1_STATUS_LEFT;
1621 			if (where == STATUS_RIGHT)
1622 				key = KEYC_TRIPLECLICK1_STATUS_RIGHT;
1623 			if (where == STATUS_DEFAULT)
1624 				key = KEYC_TRIPLECLICK1_STATUS_DEFAULT;
1625 			if (where == BORDER)
1626 				key = KEYC_TRIPLECLICK1_BORDER;
1627 			break;
1628 		case MOUSE_BUTTON_2:
1629 			if (where == PANE)
1630 				key = KEYC_TRIPLECLICK2_PANE;
1631 			if (where == STATUS)
1632 				key = KEYC_TRIPLECLICK2_STATUS;
1633 			if (where == STATUS_LEFT)
1634 				key = KEYC_TRIPLECLICK2_STATUS_LEFT;
1635 			if (where == STATUS_RIGHT)
1636 				key = KEYC_TRIPLECLICK2_STATUS_RIGHT;
1637 			if (where == STATUS_DEFAULT)
1638 				key = KEYC_TRIPLECLICK2_STATUS_DEFAULT;
1639 			if (where == BORDER)
1640 				key = KEYC_TRIPLECLICK2_BORDER;
1641 			break;
1642 		case MOUSE_BUTTON_3:
1643 			if (where == PANE)
1644 				key = KEYC_TRIPLECLICK3_PANE;
1645 			if (where == STATUS)
1646 				key = KEYC_TRIPLECLICK3_STATUS;
1647 			if (where == STATUS_LEFT)
1648 				key = KEYC_TRIPLECLICK3_STATUS_LEFT;
1649 			if (where == STATUS_RIGHT)
1650 				key = KEYC_TRIPLECLICK3_STATUS_RIGHT;
1651 			if (where == STATUS_DEFAULT)
1652 				key = KEYC_TRIPLECLICK3_STATUS_DEFAULT;
1653 			if (where == BORDER)
1654 				key = KEYC_TRIPLECLICK3_BORDER;
1655 			break;
1656 		case MOUSE_BUTTON_6:
1657 			if (where == PANE)
1658 				key = KEYC_TRIPLECLICK6_PANE;
1659 			if (where == STATUS)
1660 				key = KEYC_TRIPLECLICK6_STATUS;
1661 			if (where == STATUS_LEFT)
1662 				key = KEYC_TRIPLECLICK6_STATUS_LEFT;
1663 			if (where == STATUS_RIGHT)
1664 				key = KEYC_TRIPLECLICK6_STATUS_RIGHT;
1665 			if (where == STATUS_DEFAULT)
1666 				key = KEYC_TRIPLECLICK6_STATUS_DEFAULT;
1667 			if (where == BORDER)
1668 				key = KEYC_TRIPLECLICK6_BORDER;
1669 			break;
1670 		case MOUSE_BUTTON_7:
1671 			if (where == PANE)
1672 				key = KEYC_TRIPLECLICK7_PANE;
1673 			if (where == STATUS)
1674 				key = KEYC_TRIPLECLICK7_STATUS;
1675 			if (where == STATUS_LEFT)
1676 				key = KEYC_TRIPLECLICK7_STATUS_LEFT;
1677 			if (where == STATUS_RIGHT)
1678 				key = KEYC_TRIPLECLICK7_STATUS_RIGHT;
1679 			if (where == STATUS_DEFAULT)
1680 				key = KEYC_TRIPLECLICK7_STATUS_DEFAULT;
1681 			if (where == BORDER)
1682 				key = KEYC_TRIPLECLICK7_BORDER;
1683 			break;
1684 		case MOUSE_BUTTON_8:
1685 			if (where == PANE)
1686 				key = KEYC_TRIPLECLICK8_PANE;
1687 			if (where == STATUS)
1688 				key = KEYC_TRIPLECLICK8_STATUS;
1689 			if (where == STATUS_LEFT)
1690 				key = KEYC_TRIPLECLICK8_STATUS_LEFT;
1691 			if (where == STATUS_RIGHT)
1692 				key = KEYC_TRIPLECLICK8_STATUS_RIGHT;
1693 			if (where == STATUS_DEFAULT)
1694 				key = KEYC_TRIPLECLICK8_STATUS_DEFAULT;
1695 			if (where == BORDER)
1696 				key = KEYC_TRIPLECLICK8_BORDER;
1697 			break;
1698 		case MOUSE_BUTTON_9:
1699 			if (where == PANE)
1700 				key = KEYC_TRIPLECLICK9_PANE;
1701 			if (where == STATUS)
1702 				key = KEYC_TRIPLECLICK9_STATUS;
1703 			if (where == STATUS_LEFT)
1704 				key = KEYC_TRIPLECLICK9_STATUS_LEFT;
1705 			if (where == STATUS_RIGHT)
1706 				key = KEYC_TRIPLECLICK9_STATUS_RIGHT;
1707 			if (where == STATUS_DEFAULT)
1708 				key = KEYC_TRIPLECLICK9_STATUS_DEFAULT;
1709 			if (where == BORDER)
1710 				key = KEYC_TRIPLECLICK9_BORDER;
1711 			break;
1712 		case MOUSE_BUTTON_10:
1713 			if (where == PANE)
1714 				key = KEYC_TRIPLECLICK10_PANE;
1715 			if (where == STATUS)
1716 				key = KEYC_TRIPLECLICK10_STATUS;
1717 			if (where == STATUS_LEFT)
1718 				key = KEYC_TRIPLECLICK10_STATUS_LEFT;
1719 			if (where == STATUS_RIGHT)
1720 				key = KEYC_TRIPLECLICK10_STATUS_RIGHT;
1721 			if (where == STATUS_DEFAULT)
1722 				key = KEYC_TRIPLECLICK10_STATUS_DEFAULT;
1723 			if (where == BORDER)
1724 				key = KEYC_TRIPLECLICK10_BORDER;
1725 			break;
1726 		case MOUSE_BUTTON_11:
1727 			if (where == PANE)
1728 				key = KEYC_TRIPLECLICK11_PANE;
1729 			if (where == STATUS)
1730 				key = KEYC_TRIPLECLICK11_STATUS;
1731 			if (where == STATUS_LEFT)
1732 				key = KEYC_TRIPLECLICK11_STATUS_LEFT;
1733 			if (where == STATUS_RIGHT)
1734 				key = KEYC_TRIPLECLICK11_STATUS_RIGHT;
1735 			if (where == STATUS_DEFAULT)
1736 				key = KEYC_TRIPLECLICK11_STATUS_DEFAULT;
1737 			if (where == BORDER)
1738 				key = KEYC_TRIPLECLICK11_BORDER;
1739 			break;
1740 		}
1741 		break;
1742 	}
1743 	if (key == KEYC_UNKNOWN)
1744 		return (KEYC_UNKNOWN);
1745 
1746 out:
1747 	/* Apply modifiers if any. */
1748 	if (b & MOUSE_MASK_META)
1749 		key |= KEYC_META;
1750 	if (b & MOUSE_MASK_CTRL)
1751 		key |= KEYC_CTRL;
1752 	if (b & MOUSE_MASK_SHIFT)
1753 		key |= KEYC_SHIFT;
1754 
1755 	if (log_get_level() != 0)
1756 		log_debug("mouse key is %s", key_string_lookup_key (key, 1));
1757 	return (key);
1758 }
1759 
1760 /* Is this fast enough to probably be a paste? */
1761 static int
1762 server_client_assume_paste(struct session *s)
1763 {
1764 	struct timeval	tv;
1765 	int		t;
1766 
1767 	if ((t = options_get_number(s->options, "assume-paste-time")) == 0)
1768 		return (0);
1769 
1770 	timersub(&s->activity_time, &s->last_activity_time, &tv);
1771 	if (tv.tv_sec == 0 && tv.tv_usec < t * 1000) {
1772 		log_debug("session %s pasting (flag %d)", s->name,
1773 		    !!(s->flags & SESSION_PASTING));
1774 		if (s->flags & SESSION_PASTING)
1775 			return (1);
1776 		s->flags |= SESSION_PASTING;
1777 		return (0);
1778 	}
1779 	log_debug("session %s not pasting", s->name);
1780 	s->flags &= ~SESSION_PASTING;
1781 	return (0);
1782 }
1783 
1784 /* Has the latest client changed? */
1785 static void
1786 server_client_update_latest(struct client *c)
1787 {
1788 	struct window	*w;
1789 
1790 	if (c->session == NULL)
1791 		return;
1792 	w = c->session->curw->window;
1793 
1794 	if (w->latest == c)
1795 		return;
1796 	w->latest = c;
1797 
1798 	if (options_get_number(w->options, "window-size") == WINDOW_SIZE_LATEST)
1799 		recalculate_size(w, 0);
1800 
1801 	notify_client("client-active", c);
1802 }
1803 
1804 /*
1805  * Handle data key input from client. This owns and can modify the key event it
1806  * is given and is responsible for freeing it.
1807  */
1808 static enum cmd_retval
1809 server_client_key_callback(struct cmdq_item *item, void *data)
1810 {
1811 	struct client			*c = cmdq_get_client(item);
1812 	struct key_event		*event = data;
1813 	key_code			 key = event->key;
1814 	struct mouse_event		*m = &event->m;
1815 	struct session			*s = c->session;
1816 	struct winlink			*wl;
1817 	struct window_pane		*wp;
1818 	struct window_mode_entry	*wme;
1819 	struct timeval			 tv;
1820 	struct key_table		*table, *first;
1821 	struct key_binding		*bd;
1822 	int				 xtimeout, flags;
1823 	struct cmd_find_state		 fs;
1824 	key_code			 key0;
1825 
1826 	/* Check the client is good to accept input. */
1827 	if (s == NULL || (c->flags & CLIENT_UNATTACHEDFLAGS))
1828 		goto out;
1829 	wl = s->curw;
1830 
1831 	/* Update the activity timer. */
1832 	if (gettimeofday(&c->activity_time, NULL) != 0)
1833 		fatal("gettimeofday failed");
1834 	session_update_activity(s, &c->activity_time);
1835 
1836 	/* Check for mouse keys. */
1837 	m->valid = 0;
1838 	if (key == KEYC_MOUSE || key == KEYC_DOUBLECLICK) {
1839 		if (c->flags & CLIENT_READONLY)
1840 			goto out;
1841 		key = server_client_check_mouse(c, event);
1842 		if (key == KEYC_UNKNOWN)
1843 			goto out;
1844 
1845 		m->valid = 1;
1846 		m->key = key;
1847 
1848 		/*
1849 		 * Mouse drag is in progress, so fire the callback (now that
1850 		 * the mouse event is valid).
1851 		 */
1852 		if ((key & KEYC_MASK_KEY) == KEYC_DRAGGING) {
1853 			c->tty.mouse_drag_update(c, m);
1854 			goto out;
1855 		}
1856 		event->key = key;
1857 	}
1858 
1859 	/* Find affected pane. */
1860 	if (!KEYC_IS_MOUSE(key) || cmd_find_from_mouse(&fs, m, 0) != 0)
1861 		cmd_find_from_client(&fs, c, 0);
1862 	wp = fs.wp;
1863 
1864 	/* Forward mouse keys if disabled. */
1865 	if (KEYC_IS_MOUSE(key) && !options_get_number(s->options, "mouse"))
1866 		goto forward_key;
1867 
1868 	/* Treat everything as a regular key when pasting is detected. */
1869 	if (!KEYC_IS_MOUSE(key) && server_client_assume_paste(s))
1870 		goto forward_key;
1871 
1872 	/*
1873 	 * Work out the current key table. If the pane is in a mode, use
1874 	 * the mode table instead of the default key table.
1875 	 */
1876 	if (server_client_is_default_key_table(c, c->keytable) &&
1877 	    wp != NULL &&
1878 	    (wme = TAILQ_FIRST(&wp->modes)) != NULL &&
1879 	    wme->mode->key_table != NULL)
1880 		table = key_bindings_get_table(wme->mode->key_table(wme), 1);
1881 	else
1882 		table = c->keytable;
1883 	first = table;
1884 
1885 table_changed:
1886 	/*
1887 	 * The prefix always takes precedence and forces a switch to the prefix
1888 	 * table, unless we are already there.
1889 	 */
1890 	key0 = (key & (KEYC_MASK_KEY|KEYC_MASK_MODIFIERS));
1891 	if ((key0 == (key_code)options_get_number(s->options, "prefix") ||
1892 	    key0 == (key_code)options_get_number(s->options, "prefix2")) &&
1893 	    strcmp(table->name, "prefix") != 0) {
1894 		server_client_set_key_table(c, "prefix");
1895 		server_status_client(c);
1896 		goto out;
1897 	}
1898 	flags = c->flags;
1899 
1900 try_again:
1901 	/* Log key table. */
1902 	if (wp == NULL)
1903 		log_debug("key table %s (no pane)", table->name);
1904 	else
1905 		log_debug("key table %s (pane %%%u)", table->name, wp->id);
1906 	if (c->flags & CLIENT_REPEAT)
1907 		log_debug("currently repeating");
1908 
1909 	/* Try to see if there is a key binding in the current table. */
1910 	bd = key_bindings_get(table, key0);
1911 	if (bd != NULL) {
1912 		/*
1913 		 * Key was matched in this table. If currently repeating but a
1914 		 * non-repeating binding was found, stop repeating and try
1915 		 * again in the root table.
1916 		 */
1917 		if ((c->flags & CLIENT_REPEAT) &&
1918 		    (~bd->flags & KEY_BINDING_REPEAT)) {
1919 			log_debug("found in key table %s (not repeating)",
1920 			    table->name);
1921 			server_client_set_key_table(c, NULL);
1922 			first = table = c->keytable;
1923 			c->flags &= ~CLIENT_REPEAT;
1924 			server_status_client(c);
1925 			goto table_changed;
1926 		}
1927 		log_debug("found in key table %s", table->name);
1928 
1929 		/*
1930 		 * Take a reference to this table to make sure the key binding
1931 		 * doesn't disappear.
1932 		 */
1933 		table->references++;
1934 
1935 		/*
1936 		 * If this is a repeating key, start the timer. Otherwise reset
1937 		 * the client back to the root table.
1938 		 */
1939 		xtimeout = options_get_number(s->options, "repeat-time");
1940 		if (xtimeout != 0 && (bd->flags & KEY_BINDING_REPEAT)) {
1941 			c->flags |= CLIENT_REPEAT;
1942 
1943 			tv.tv_sec = xtimeout / 1000;
1944 			tv.tv_usec = (xtimeout % 1000) * 1000L;
1945 			evtimer_del(&c->repeat_timer);
1946 			evtimer_add(&c->repeat_timer, &tv);
1947 		} else {
1948 			c->flags &= ~CLIENT_REPEAT;
1949 			server_client_set_key_table(c, NULL);
1950 		}
1951 		server_status_client(c);
1952 
1953 		/* Execute the key binding. */
1954 		key_bindings_dispatch(bd, item, c, event, &fs);
1955 		key_bindings_unref_table(table);
1956 		goto out;
1957 	}
1958 
1959 	/*
1960 	 * No match, try the ANY key.
1961 	 */
1962 	if (key0 != KEYC_ANY) {
1963 		key0 = KEYC_ANY;
1964 		goto try_again;
1965 	}
1966 
1967 	/*
1968 	 * No match in this table. If not in the root table or if repeating,
1969 	 * switch the client back to the root table and try again.
1970 	 */
1971 	log_debug("not found in key table %s", table->name);
1972 	if (!server_client_is_default_key_table(c, table) ||
1973 	    (c->flags & CLIENT_REPEAT)) {
1974 		log_debug("trying in root table");
1975 		server_client_set_key_table(c, NULL);
1976 		table = c->keytable;
1977 		if (c->flags & CLIENT_REPEAT)
1978 			first = table;
1979 		c->flags &= ~CLIENT_REPEAT;
1980 		server_status_client(c);
1981 		goto table_changed;
1982 	}
1983 
1984 	/*
1985 	 * No match in the root table either. If this wasn't the first table
1986 	 * tried, don't pass the key to the pane.
1987 	 */
1988 	if (first != table && (~flags & CLIENT_REPEAT)) {
1989 		server_client_set_key_table(c, NULL);
1990 		server_status_client(c);
1991 		goto out;
1992 	}
1993 
1994 forward_key:
1995 	if (c->flags & CLIENT_READONLY)
1996 		goto out;
1997 	if (wp != NULL)
1998 		window_pane_key(wp, c, s, wl, key, m);
1999 
2000 out:
2001 	if (s != NULL && key != KEYC_FOCUS_OUT)
2002 		server_client_update_latest(c);
2003 	free(event);
2004 	return (CMD_RETURN_NORMAL);
2005 }
2006 
2007 /* Handle a key event. */
2008 int
2009 server_client_handle_key(struct client *c, struct key_event *event)
2010 {
2011 	struct session		*s = c->session;
2012 	struct cmdq_item	*item;
2013 
2014 	/* Check the client is good to accept input. */
2015 	if (s == NULL || (c->flags & CLIENT_UNATTACHEDFLAGS))
2016 		return (0);
2017 
2018 	/*
2019 	 * Key presses in overlay mode and the command prompt are a special
2020 	 * case. The queue might be blocked so they need to be processed
2021 	 * immediately rather than queued.
2022 	 */
2023 	if (~c->flags & CLIENT_READONLY) {
2024 		if (c->message_string != NULL) {
2025 			if (c->message_ignore_keys)
2026 				return (0);
2027 			status_message_clear(c);
2028 		}
2029 		if (c->overlay_key != NULL) {
2030 			switch (c->overlay_key(c, c->overlay_data, event)) {
2031 			case 0:
2032 				return (0);
2033 			case 1:
2034 				server_client_clear_overlay(c);
2035 				return (0);
2036 			}
2037 		}
2038 		server_client_clear_overlay(c);
2039 		if (c->prompt_string != NULL) {
2040 			if (status_prompt_key(c, event->key) == 0)
2041 				return (0);
2042 		}
2043 	}
2044 
2045 	/*
2046 	 * Add the key to the queue so it happens after any commands queued by
2047 	 * previous keys.
2048 	 */
2049 	item = cmdq_get_callback(server_client_key_callback, event);
2050 	cmdq_append(c, item);
2051 	return (1);
2052 }
2053 
2054 /* Client functions that need to happen every loop. */
2055 void
2056 server_client_loop(void)
2057 {
2058 	struct client		*c;
2059 	struct window		*w;
2060 	struct window_pane	*wp;
2061 
2062 	/* Check for window resize. This is done before redrawing. */
2063 	RB_FOREACH(w, windows, &windows)
2064 		server_client_check_window_resize(w);
2065 
2066 	/* Check clients. */
2067 	TAILQ_FOREACH(c, &clients, entry) {
2068 		server_client_check_exit(c);
2069 		if (c->session != NULL) {
2070 			server_client_check_modes(c);
2071 			server_client_check_redraw(c);
2072 			server_client_reset_state(c);
2073 		}
2074 	}
2075 
2076 	/*
2077 	 * Any windows will have been redrawn as part of clients, so clear
2078 	 * their flags now.
2079 	 */
2080 	RB_FOREACH(w, windows, &windows) {
2081 		TAILQ_FOREACH(wp, &w->panes, entry) {
2082 			if (wp->fd != -1) {
2083 				server_client_check_pane_resize(wp);
2084 				server_client_check_pane_buffer(wp);
2085 			}
2086 			wp->flags &= ~PANE_REDRAW;
2087 		}
2088 		check_window_name(w);
2089 	}
2090 }
2091 
2092 /* Check if window needs to be resized. */
2093 static void
2094 server_client_check_window_resize(struct window *w)
2095 {
2096 	struct winlink	*wl;
2097 
2098 	if (~w->flags & WINDOW_RESIZE)
2099 		return;
2100 
2101 	TAILQ_FOREACH(wl, &w->winlinks, wentry) {
2102 		if (wl->session->attached != 0 && wl->session->curw == wl)
2103 			break;
2104 	}
2105 	if (wl == NULL)
2106 		return;
2107 
2108 	log_debug("%s: resizing window @%u", __func__, w->id);
2109 	resize_window(w, w->new_sx, w->new_sy, w->new_xpixel, w->new_ypixel);
2110 }
2111 
2112 /* Resize timer event. */
2113 static void
2114 server_client_resize_timer(__unused int fd, __unused short events, void *data)
2115 {
2116 	struct window_pane	*wp = data;
2117 
2118 	log_debug("%s: %%%u resize timer expired", __func__, wp->id);
2119 	evtimer_del(&wp->resize_timer);
2120 }
2121 
2122 /* Check if pane should be resized. */
2123 static void
2124 server_client_check_pane_resize(struct window_pane *wp)
2125 {
2126 	struct window_pane_resize	*r;
2127 	struct window_pane_resize	*r1;
2128 	struct window_pane_resize	*first;
2129 	struct window_pane_resize	*last;
2130 	struct timeval			 tv = { .tv_usec = 250000 };
2131 
2132 	if (TAILQ_EMPTY(&wp->resize_queue))
2133 		return;
2134 
2135 	if (!event_initialized(&wp->resize_timer))
2136 		evtimer_set(&wp->resize_timer, server_client_resize_timer, wp);
2137 	if (evtimer_pending(&wp->resize_timer, NULL))
2138 		return;
2139 
2140 	log_debug("%s: %%%u needs to be resized", __func__, wp->id);
2141 	TAILQ_FOREACH(r, &wp->resize_queue, entry) {
2142 		log_debug("queued resize: %ux%u -> %ux%u", r->osx, r->osy,
2143 		    r->sx, r->sy);
2144 	}
2145 
2146 	/*
2147 	 * There are three cases that matter:
2148 	 *
2149 	 * - Only one resize. It can just be applied.
2150 	 *
2151 	 * - Multiple resizes and the ending size is different from the
2152 	 *   starting size. We can discard all resizes except the most recent.
2153 	 *
2154 	 * - Multiple resizes and the ending size is the same as the starting
2155 	 *   size. We must resize at least twice to force the application to
2156 	 *   redraw. So apply the first and leave the last on the queue for
2157 	 *   next time.
2158 	 */
2159 	first = TAILQ_FIRST(&wp->resize_queue);
2160 	last = TAILQ_LAST(&wp->resize_queue, window_pane_resizes);
2161 	if (first == last) {
2162 		/* Only one resize. */
2163 		window_pane_send_resize(wp, first->sx, first->sy);
2164 		TAILQ_REMOVE(&wp->resize_queue, first, entry);
2165 		free(first);
2166 	} else if (last->sx != first->osx || last->sy != first->osy) {
2167 		/* Multiple resizes ending up with a different size. */
2168 		window_pane_send_resize(wp, last->sx, last->sy);
2169 		TAILQ_FOREACH_SAFE(r, &wp->resize_queue, entry, r1) {
2170 			TAILQ_REMOVE(&wp->resize_queue, r, entry);
2171 			free(r);
2172 		}
2173 	} else {
2174 		/*
2175 		 * Multiple resizes ending up with the same size. There will
2176 		 * not be more than one to the same size in succession so we
2177 		 * can just use the last-but-one on the list and leave the last
2178 		 * for later. We reduce the time until the next check to avoid
2179 		 * a long delay between the resizes.
2180 		 */
2181 		r = TAILQ_PREV(last, window_pane_resizes, entry);
2182 		window_pane_send_resize(wp, r->sx, r->sy);
2183 		TAILQ_FOREACH_SAFE(r, &wp->resize_queue, entry, r1) {
2184 			if (r == last)
2185 				break;
2186 			TAILQ_REMOVE(&wp->resize_queue, r, entry);
2187 			free(r);
2188 		}
2189 		tv.tv_usec = 10000;
2190 	}
2191 	evtimer_add(&wp->resize_timer, &tv);
2192 }
2193 
2194 /* Check pane buffer size. */
2195 static void
2196 server_client_check_pane_buffer(struct window_pane *wp)
2197 {
2198 	struct evbuffer			*evb = wp->event->input;
2199 	size_t				 minimum;
2200 	struct client			*c;
2201 	struct window_pane_offset	*wpo;
2202 	int				 off = 1, flag;
2203 	u_int				 attached_clients = 0;
2204 	size_t				 new_size;
2205 
2206 	/*
2207 	 * Work out the minimum used size. This is the most that can be removed
2208 	 * from the buffer.
2209 	 */
2210 	minimum = wp->offset.used;
2211 	if (wp->pipe_fd != -1 && wp->pipe_offset.used < minimum)
2212 		minimum = wp->pipe_offset.used;
2213 	TAILQ_FOREACH(c, &clients, entry) {
2214 		if (c->session == NULL)
2215 			continue;
2216 		attached_clients++;
2217 
2218 		if (~c->flags & CLIENT_CONTROL) {
2219 			off = 0;
2220 			continue;
2221 		}
2222 		wpo = control_pane_offset(c, wp, &flag);
2223 		if (wpo == NULL) {
2224 			if (!flag)
2225 				off = 0;
2226 			continue;
2227 		}
2228 		if (!flag)
2229 			off = 0;
2230 
2231 		window_pane_get_new_data(wp, wpo, &new_size);
2232 		log_debug("%s: %s has %zu bytes used and %zu left for %%%u",
2233 		    __func__, c->name, wpo->used - wp->base_offset, new_size,
2234 		    wp->id);
2235 		if (wpo->used < minimum)
2236 			minimum = wpo->used;
2237 	}
2238 	if (attached_clients == 0)
2239 		off = 0;
2240 	minimum -= wp->base_offset;
2241 	if (minimum == 0)
2242 		goto out;
2243 
2244 	/* Drain the buffer. */
2245 	log_debug("%s: %%%u has %zu minimum (of %zu) bytes used", __func__,
2246 	    wp->id, minimum, EVBUFFER_LENGTH(evb));
2247 	evbuffer_drain(evb, minimum);
2248 
2249 	/*
2250 	 * Adjust the base offset. If it would roll over, all the offsets into
2251 	 * the buffer need to be adjusted.
2252 	 */
2253 	if (wp->base_offset > SIZE_MAX - minimum) {
2254 		log_debug("%s: %%%u base offset has wrapped", __func__, wp->id);
2255 		wp->offset.used -= wp->base_offset;
2256 		if (wp->pipe_fd != -1)
2257 			wp->pipe_offset.used -= wp->base_offset;
2258 		TAILQ_FOREACH(c, &clients, entry) {
2259 			if (c->session == NULL || (~c->flags & CLIENT_CONTROL))
2260 				continue;
2261 			wpo = control_pane_offset(c, wp, &flag);
2262 			if (wpo != NULL && !flag)
2263 				wpo->used -= wp->base_offset;
2264 		}
2265 		wp->base_offset = minimum;
2266 	} else
2267 		wp->base_offset += minimum;
2268 
2269 out:
2270 	/*
2271 	 * If there is data remaining, and there are no clients able to consume
2272 	 * it, do not read any more. This is true when there are attached
2273 	 * clients, all of which are control clients which are not able to
2274 	 * accept any more data.
2275 	 */
2276 	log_debug("%s: pane %%%u is %s", __func__, wp->id, off ? "off" : "on");
2277 	if (off)
2278 		bufferevent_disable(wp->event, EV_READ);
2279 	else
2280 		bufferevent_enable(wp->event, EV_READ);
2281 }
2282 
2283 /*
2284  * Update cursor position and mode settings. The scroll region and attributes
2285  * are cleared when idle (waiting for an event) as this is the most likely time
2286  * a user may interrupt tmux, for example with ~^Z in ssh(1). This is a
2287  * compromise between excessive resets and likelihood of an interrupt.
2288  *
2289  * tty_region/tty_reset/tty_update_mode already take care of not resetting
2290  * things that are already in their default state.
2291  */
2292 static void
2293 server_client_reset_state(struct client *c)
2294 {
2295 	struct tty		*tty = &c->tty;
2296 	struct window		*w = c->session->curw->window;
2297 	struct window_pane	*wp = server_client_get_pane(c), *loop;
2298 	struct screen		*s = NULL;
2299 	struct options		*oo = c->session->options;
2300 	int			 mode = 0, cursor, flags, n;
2301 	u_int			 cx = 0, cy = 0, ox, oy, sx, sy;
2302 
2303 	if (c->flags & (CLIENT_CONTROL|CLIENT_SUSPENDED))
2304 		return;
2305 
2306 	/* Disable the block flag. */
2307 	flags = (tty->flags & TTY_BLOCK);
2308 	tty->flags &= ~TTY_BLOCK;
2309 
2310 	/* Get mode from overlay if any, else from screen. */
2311 	if (c->overlay_draw != NULL) {
2312 		if (c->overlay_mode != NULL)
2313 			s = c->overlay_mode(c, c->overlay_data, &cx, &cy);
2314 	} else
2315 		s = wp->screen;
2316 	if (s != NULL)
2317 		mode = s->mode;
2318 	if (log_get_level() != 0) {
2319 		log_debug("%s: client %s mode %s", __func__, c->name,
2320 		    screen_mode_to_string(mode));
2321 	}
2322 
2323 	/* Reset region and margin. */
2324 	tty_region_off(tty);
2325 	tty_margin_off(tty);
2326 
2327 	/* Move cursor to pane cursor and offset. */
2328 	if (c->prompt_string != NULL) {
2329 		n = options_get_number(c->session->options, "status-position");
2330 		if (n == 0)
2331 			cy = 0;
2332 		else {
2333 			n = status_line_size(c);
2334 			if (n == 0)
2335 				cy = tty->sy - 1;
2336 			else
2337 				cy = tty->sy - n;
2338 		}
2339 		cx = c->prompt_cursor;
2340 		mode &= ~MODE_CURSOR;
2341 	} else if (c->overlay_draw == NULL) {
2342 		cursor = 0;
2343 		tty_window_offset(tty, &ox, &oy, &sx, &sy);
2344 		if (wp->xoff + s->cx >= ox && wp->xoff + s->cx <= ox + sx &&
2345 		    wp->yoff + s->cy >= oy && wp->yoff + s->cy <= oy + sy) {
2346 			cursor = 1;
2347 
2348 			cx = wp->xoff + s->cx - ox;
2349 			cy = wp->yoff + s->cy - oy;
2350 
2351 			if (status_at_line(c) == 0)
2352 				cy += status_line_size(c);
2353 		}
2354 		if (!cursor)
2355 			mode &= ~MODE_CURSOR;
2356 	}
2357 	log_debug("%s: cursor to %u,%u", __func__, cx, cy);
2358 	tty_cursor(tty, cx, cy);
2359 
2360 	/*
2361 	 * Set mouse mode if requested. To support dragging, always use button
2362 	 * mode.
2363 	 */
2364 	if (options_get_number(oo, "mouse")) {
2365 		if (c->overlay_draw == NULL) {
2366 			mode &= ~ALL_MOUSE_MODES;
2367 			TAILQ_FOREACH(loop, &w->panes, entry) {
2368 				if (loop->screen->mode & MODE_MOUSE_ALL)
2369 					mode |= MODE_MOUSE_ALL;
2370 			}
2371 		}
2372 		if (~mode & MODE_MOUSE_ALL)
2373 			mode |= MODE_MOUSE_BUTTON;
2374 	}
2375 
2376 	/* Clear bracketed paste mode if at the prompt. */
2377 	if (c->overlay_draw == NULL && c->prompt_string != NULL)
2378 		mode &= ~MODE_BRACKETPASTE;
2379 
2380 	/* Set the terminal mode and reset attributes. */
2381 	tty_update_mode(tty, mode, s);
2382 	tty_reset(tty);
2383 
2384 	/* All writing must be done, send a sync end (if it was started). */
2385 	tty_sync_end(tty);
2386 	tty->flags |= flags;
2387 }
2388 
2389 /* Repeat time callback. */
2390 static void
2391 server_client_repeat_timer(__unused int fd, __unused short events, void *data)
2392 {
2393 	struct client	*c = data;
2394 
2395 	if (c->flags & CLIENT_REPEAT) {
2396 		server_client_set_key_table(c, NULL);
2397 		c->flags &= ~CLIENT_REPEAT;
2398 		server_status_client(c);
2399 	}
2400 }
2401 
2402 /* Double-click callback. */
2403 static void
2404 server_client_click_timer(__unused int fd, __unused short events, void *data)
2405 {
2406 	struct client		*c = data;
2407 	struct key_event	*event;
2408 
2409 	log_debug("click timer expired");
2410 
2411 	if (c->flags & CLIENT_TRIPLECLICK) {
2412 		/*
2413 		 * Waiting for a third click that hasn't happened, so this must
2414 		 * have been a double click.
2415 		 */
2416 		event = xmalloc(sizeof *event);
2417 		event->key = KEYC_DOUBLECLICK;
2418 		memcpy(&event->m, &c->click_event, sizeof event->m);
2419 		if (!server_client_handle_key(c, event))
2420 			free(event);
2421 	}
2422 	c->flags &= ~(CLIENT_DOUBLECLICK|CLIENT_TRIPLECLICK);
2423 }
2424 
2425 /* Check if client should be exited. */
2426 static void
2427 server_client_check_exit(struct client *c)
2428 {
2429 	struct client_file	*cf;
2430 	const char		*name = c->exit_session;
2431 	char			*data;
2432 	size_t			 size, msize;
2433 
2434 	if (c->flags & (CLIENT_DEAD|CLIENT_EXITED))
2435 		return;
2436 	if (~c->flags & CLIENT_EXIT)
2437 		return;
2438 
2439 	if (c->flags & CLIENT_CONTROL) {
2440 		control_discard(c);
2441 		if (!control_all_done(c))
2442 			return;
2443 	}
2444 	RB_FOREACH(cf, client_files, &c->files) {
2445 		if (EVBUFFER_LENGTH(cf->buffer) != 0)
2446 			return;
2447 	}
2448 	c->flags |= CLIENT_EXITED;
2449 
2450 	switch (c->exit_type) {
2451 	case CLIENT_EXIT_RETURN:
2452 		if (c->exit_message != NULL)
2453 			msize = strlen(c->exit_message) + 1;
2454 		else
2455 			msize = 0;
2456 		size = (sizeof c->retval) + msize;
2457 		data = xmalloc(size);
2458 		memcpy(data, &c->retval, sizeof c->retval);
2459 		if (c->exit_message != NULL)
2460 			memcpy(data + sizeof c->retval, c->exit_message, msize);
2461 		proc_send(c->peer, MSG_EXIT, -1, data, size);
2462 		free(data);
2463 		break;
2464 	case CLIENT_EXIT_SHUTDOWN:
2465 		proc_send(c->peer, MSG_SHUTDOWN, -1, NULL, 0);
2466 		break;
2467 	case CLIENT_EXIT_DETACH:
2468 		proc_send(c->peer, c->exit_msgtype, -1, name, strlen(name) + 1);
2469 		break;
2470 	}
2471 	free(c->exit_session);
2472 	free(c->exit_message);
2473 }
2474 
2475 /* Redraw timer callback. */
2476 static void
2477 server_client_redraw_timer(__unused int fd, __unused short events,
2478     __unused void *data)
2479 {
2480 	log_debug("redraw timer fired");
2481 }
2482 
2483 /*
2484  * Check if modes need to be updated. Only modes in the current window are
2485  * updated and it is done when the status line is redrawn.
2486  */
2487 static void
2488 server_client_check_modes(struct client *c)
2489 {
2490 	struct window			*w = c->session->curw->window;
2491 	struct window_pane		*wp;
2492 	struct window_mode_entry	*wme;
2493 
2494 	if (c->flags & (CLIENT_CONTROL|CLIENT_SUSPENDED))
2495 		return;
2496 	if (~c->flags & CLIENT_REDRAWSTATUS)
2497 		return;
2498 	TAILQ_FOREACH(wp, &w->panes, entry) {
2499 		wme = TAILQ_FIRST(&wp->modes);
2500 		if (wme != NULL && wme->mode->update != NULL)
2501 			wme->mode->update(wme);
2502 	}
2503 }
2504 
2505 /* Check for client redraws. */
2506 static void
2507 server_client_check_redraw(struct client *c)
2508 {
2509 	struct session		*s = c->session;
2510 	struct tty		*tty = &c->tty;
2511 	struct window		*w = c->session->curw->window;
2512 	struct window_pane	*wp;
2513 	int			 needed, flags, mode = tty->mode, new_flags = 0;
2514 	int			 redraw;
2515 	u_int			 bit = 0;
2516 	struct timeval		 tv = { .tv_usec = 1000 };
2517 	static struct event	 ev;
2518 	size_t			 left;
2519 
2520 	if (c->flags & (CLIENT_CONTROL|CLIENT_SUSPENDED))
2521 		return;
2522 	if (c->flags & CLIENT_ALLREDRAWFLAGS) {
2523 		log_debug("%s: redraw%s%s%s%s%s", c->name,
2524 		    (c->flags & CLIENT_REDRAWWINDOW) ? " window" : "",
2525 		    (c->flags & CLIENT_REDRAWSTATUS) ? " status" : "",
2526 		    (c->flags & CLIENT_REDRAWBORDERS) ? " borders" : "",
2527 		    (c->flags & CLIENT_REDRAWOVERLAY) ? " overlay" : "",
2528 		    (c->flags & CLIENT_REDRAWPANES) ? " panes" : "");
2529 	}
2530 
2531 	/*
2532 	 * If there is outstanding data, defer the redraw until it has been
2533 	 * consumed. We can just add a timer to get out of the event loop and
2534 	 * end up back here.
2535 	 */
2536 	needed = 0;
2537 	if (c->flags & CLIENT_ALLREDRAWFLAGS)
2538 		needed = 1;
2539 	else {
2540 		TAILQ_FOREACH(wp, &w->panes, entry) {
2541 			if (wp->flags & PANE_REDRAW) {
2542 				needed = 1;
2543 				break;
2544 			}
2545 		}
2546 		if (needed)
2547 			new_flags |= CLIENT_REDRAWPANES;
2548 	}
2549 	if (needed && (left = EVBUFFER_LENGTH(tty->out)) != 0) {
2550 		log_debug("%s: redraw deferred (%zu left)", c->name, left);
2551 		if (!evtimer_initialized(&ev))
2552 			evtimer_set(&ev, server_client_redraw_timer, NULL);
2553 		if (!evtimer_pending(&ev, NULL)) {
2554 			log_debug("redraw timer started");
2555 			evtimer_add(&ev, &tv);
2556 		}
2557 
2558 		if (~c->flags & CLIENT_REDRAWWINDOW) {
2559 			TAILQ_FOREACH(wp, &w->panes, entry) {
2560 				if (wp->flags & PANE_REDRAW) {
2561 					log_debug("%s: pane %%%u needs redraw",
2562 					    c->name, wp->id);
2563 					c->redraw_panes |= (1 << bit);
2564 				}
2565 				if (++bit == 64) {
2566 					/*
2567 					 * If more that 64 panes, give up and
2568 					 * just redraw the window.
2569 					 */
2570 					new_flags &= CLIENT_REDRAWPANES;
2571 					new_flags |= CLIENT_REDRAWWINDOW;
2572 					break;
2573 				}
2574 			}
2575 			if (c->redraw_panes != 0)
2576 				c->flags |= CLIENT_REDRAWPANES;
2577 		}
2578 		c->flags |= new_flags;
2579 		return;
2580 	} else if (needed)
2581 		log_debug("%s: redraw needed", c->name);
2582 
2583 	flags = tty->flags & (TTY_BLOCK|TTY_FREEZE|TTY_NOCURSOR);
2584 	tty->flags = (tty->flags & ~(TTY_BLOCK|TTY_FREEZE))|TTY_NOCURSOR;
2585 
2586 	if (~c->flags & CLIENT_REDRAWWINDOW) {
2587 		/*
2588 		 * If not redrawing the entire window, check whether each pane
2589 		 * needs to be redrawn.
2590 		 */
2591 		TAILQ_FOREACH(wp, &w->panes, entry) {
2592 			redraw = 0;
2593 			if (wp->flags & PANE_REDRAW)
2594 				redraw = 1;
2595 			else if (c->flags & CLIENT_REDRAWPANES)
2596 				redraw = !!(c->redraw_panes & (1 << bit));
2597 			bit++;
2598 			if (!redraw)
2599 				continue;
2600 			log_debug("%s: redrawing pane %%%u", __func__, wp->id);
2601 			screen_redraw_pane(c, wp);
2602 		}
2603 		c->redraw_panes = 0;
2604 		c->flags &= ~CLIENT_REDRAWPANES;
2605 	}
2606 
2607 	if (c->flags & CLIENT_ALLREDRAWFLAGS) {
2608 		if (options_get_number(s->options, "set-titles")) {
2609 			server_client_set_title(c);
2610 			server_client_set_path(c);
2611 		}
2612 		screen_redraw_screen(c);
2613 	}
2614 
2615 	tty->flags = (tty->flags & ~TTY_NOCURSOR)|(flags & TTY_NOCURSOR);
2616 	tty_update_mode(tty, mode, NULL);
2617 	tty->flags = (tty->flags & ~(TTY_BLOCK|TTY_FREEZE|TTY_NOCURSOR))|flags;
2618 
2619 	c->flags &= ~(CLIENT_ALLREDRAWFLAGS|CLIENT_STATUSFORCE);
2620 
2621 	if (needed) {
2622 		/*
2623 		 * We would have deferred the redraw unless the output buffer
2624 		 * was empty, so we can record how many bytes the redraw
2625 		 * generated.
2626 		 */
2627 		c->redraw = EVBUFFER_LENGTH(tty->out);
2628 		log_debug("%s: redraw added %zu bytes", c->name, c->redraw);
2629 	}
2630 }
2631 
2632 /* Set client title. */
2633 static void
2634 server_client_set_title(struct client *c)
2635 {
2636 	struct session		*s = c->session;
2637 	const char		*template;
2638 	char			*title;
2639 	struct format_tree	*ft;
2640 
2641 	template = options_get_string(s->options, "set-titles-string");
2642 
2643 	ft = format_create(c, NULL, FORMAT_NONE, 0);
2644 	format_defaults(ft, c, NULL, NULL, NULL);
2645 
2646 	title = format_expand_time(ft, template);
2647 	if (c->title == NULL || strcmp(title, c->title) != 0) {
2648 		free(c->title);
2649 		c->title = xstrdup(title);
2650 		tty_set_title(&c->tty, c->title);
2651 	}
2652 	free(title);
2653 
2654 	format_free(ft);
2655 }
2656 
2657 /* Set client path. */
2658 static void
2659 server_client_set_path(struct client *c)
2660 {
2661 	struct session	*s = c->session;
2662 	const char	*path;
2663 
2664 	if (s->curw == NULL)
2665 		return;
2666 	if (s->curw->window->active->base.path == NULL)
2667 		path = "";
2668 	else
2669 		path = s->curw->window->active->base.path;
2670 	if (c->path == NULL || strcmp(path, c->path) != 0) {
2671 		free(c->path);
2672 		c->path = xstrdup(path);
2673 		tty_set_path(&c->tty, c->path);
2674 	}
2675 }
2676 
2677 /* Dispatch message from client. */
2678 static void
2679 server_client_dispatch(struct imsg *imsg, void *arg)
2680 {
2681 	struct client	*c = arg;
2682 	ssize_t		 datalen;
2683 	struct session	*s;
2684 
2685 	if (c->flags & CLIENT_DEAD)
2686 		return;
2687 
2688 	if (imsg == NULL) {
2689 		server_client_lost(c);
2690 		return;
2691 	}
2692 
2693 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
2694 
2695 	switch (imsg->hdr.type) {
2696 	case MSG_IDENTIFY_CLIENTPID:
2697 	case MSG_IDENTIFY_CWD:
2698 	case MSG_IDENTIFY_ENVIRON:
2699 	case MSG_IDENTIFY_FEATURES:
2700 	case MSG_IDENTIFY_FLAGS:
2701 	case MSG_IDENTIFY_LONGFLAGS:
2702 	case MSG_IDENTIFY_STDIN:
2703 	case MSG_IDENTIFY_STDOUT:
2704 	case MSG_IDENTIFY_TERM:
2705 	case MSG_IDENTIFY_TERMINFO:
2706 	case MSG_IDENTIFY_TTYNAME:
2707 	case MSG_IDENTIFY_DONE:
2708 		server_client_dispatch_identify(c, imsg);
2709 		break;
2710 	case MSG_COMMAND:
2711 		server_client_dispatch_command(c, imsg);
2712 		break;
2713 	case MSG_RESIZE:
2714 		if (datalen != 0)
2715 			fatalx("bad MSG_RESIZE size");
2716 
2717 		if (c->flags & CLIENT_CONTROL)
2718 			break;
2719 		server_client_update_latest(c);
2720 		tty_resize(&c->tty);
2721 		recalculate_sizes();
2722 		if (c->overlay_resize == NULL)
2723 			server_client_clear_overlay(c);
2724 		else
2725 			c->overlay_resize(c, c->overlay_data);
2726 		server_redraw_client(c);
2727 		if (c->session != NULL)
2728 			notify_client("client-resized", c);
2729 		break;
2730 	case MSG_EXITING:
2731 		if (datalen != 0)
2732 			fatalx("bad MSG_EXITING size");
2733 		server_client_set_session(c, NULL);
2734 		recalculate_sizes();
2735 		tty_close(&c->tty);
2736 		proc_send(c->peer, MSG_EXITED, -1, NULL, 0);
2737 		break;
2738 	case MSG_WAKEUP:
2739 	case MSG_UNLOCK:
2740 		if (datalen != 0)
2741 			fatalx("bad MSG_WAKEUP size");
2742 
2743 		if (!(c->flags & CLIENT_SUSPENDED))
2744 			break;
2745 		c->flags &= ~CLIENT_SUSPENDED;
2746 
2747 		if (c->fd == -1 || c->session == NULL) /* exited already */
2748 			break;
2749 		s = c->session;
2750 
2751 		if (gettimeofday(&c->activity_time, NULL) != 0)
2752 			fatal("gettimeofday failed");
2753 
2754 		tty_start_tty(&c->tty);
2755 		server_redraw_client(c);
2756 		recalculate_sizes();
2757 
2758 		if (s != NULL)
2759 			session_update_activity(s, &c->activity_time);
2760 		break;
2761 	case MSG_SHELL:
2762 		if (datalen != 0)
2763 			fatalx("bad MSG_SHELL size");
2764 
2765 		server_client_dispatch_shell(c);
2766 		break;
2767 	case MSG_WRITE_READY:
2768 		file_write_ready(&c->files, imsg);
2769 		break;
2770 	case MSG_READ:
2771 		file_read_data(&c->files, imsg);
2772 		break;
2773 	case MSG_READ_DONE:
2774 		file_read_done(&c->files, imsg);
2775 		break;
2776 	}
2777 }
2778 
2779 /* Callback when command is not allowed. */
2780 static enum cmd_retval
2781 server_client_read_only(struct cmdq_item *item, __unused void *data)
2782 {
2783 	cmdq_error(item, "client is read-only");
2784 	return (CMD_RETURN_ERROR);
2785 }
2786 
2787 /* Callback when command is done. */
2788 static enum cmd_retval
2789 server_client_command_done(struct cmdq_item *item, __unused void *data)
2790 {
2791 	struct client	*c = cmdq_get_client(item);
2792 
2793 	if (~c->flags & CLIENT_ATTACHED)
2794 		c->flags |= CLIENT_EXIT;
2795 	else if (~c->flags & CLIENT_EXIT) {
2796 		if (c->flags & CLIENT_CONTROL)
2797 			control_ready(c);
2798 		tty_send_requests(&c->tty);
2799 	}
2800 	return (CMD_RETURN_NORMAL);
2801 }
2802 
2803 /* Handle command message. */
2804 static void
2805 server_client_dispatch_command(struct client *c, struct imsg *imsg)
2806 {
2807 	struct msg_command	  data;
2808 	char			 *buf;
2809 	size_t			  len;
2810 	int			  argc;
2811 	char			**argv, *cause;
2812 	struct cmd_parse_result	 *pr;
2813 	struct args_value	 *values;
2814 	struct cmdq_item	 *new_item;
2815 
2816 	if (c->flags & CLIENT_EXIT)
2817 		return;
2818 
2819 	if (imsg->hdr.len - IMSG_HEADER_SIZE < sizeof data)
2820 		fatalx("bad MSG_COMMAND size");
2821 	memcpy(&data, imsg->data, sizeof data);
2822 
2823 	buf = (char *)imsg->data + sizeof data;
2824 	len = imsg->hdr.len  - IMSG_HEADER_SIZE - sizeof data;
2825 	if (len > 0 && buf[len - 1] != '\0')
2826 		fatalx("bad MSG_COMMAND string");
2827 
2828 	argc = data.argc;
2829 	if (cmd_unpack_argv(buf, len, argc, &argv) != 0) {
2830 		cause = xstrdup("command too long");
2831 		goto error;
2832 	}
2833 
2834 	if (argc == 0) {
2835 		argc = 1;
2836 		argv = xcalloc(1, sizeof *argv);
2837 		*argv = xstrdup("new-session");
2838 	}
2839 
2840 	values = args_from_vector(argc, argv);
2841 	pr = cmd_parse_from_arguments(values, argc, NULL);
2842 	switch (pr->status) {
2843 	case CMD_PARSE_ERROR:
2844 		cause = pr->error;
2845 		goto error;
2846 	case CMD_PARSE_SUCCESS:
2847 		break;
2848 	}
2849 	args_free_values(values, argc);
2850 	free(values);
2851 	cmd_free_argv(argc, argv);
2852 
2853 	if ((c->flags & CLIENT_READONLY) &&
2854 	    !cmd_list_all_have(pr->cmdlist, CMD_READONLY))
2855 		new_item = cmdq_get_callback(server_client_read_only, NULL);
2856 	else
2857 		new_item = cmdq_get_command(pr->cmdlist, NULL);
2858 	cmdq_append(c, new_item);
2859 	cmdq_append(c, cmdq_get_callback(server_client_command_done, NULL));
2860 
2861 	cmd_list_free(pr->cmdlist);
2862 	return;
2863 
2864 error:
2865 	cmd_free_argv(argc, argv);
2866 
2867 	cmdq_append(c, cmdq_get_error(cause));
2868 	free(cause);
2869 
2870 	c->flags |= CLIENT_EXIT;
2871 }
2872 
2873 /* Handle identify message. */
2874 static void
2875 server_client_dispatch_identify(struct client *c, struct imsg *imsg)
2876 {
2877 	const char	*data, *home;
2878 	size_t		 datalen;
2879 	int		 flags, feat;
2880 	uint64_t	 longflags;
2881 	char		*name;
2882 
2883 	if (c->flags & CLIENT_IDENTIFIED)
2884 		fatalx("out-of-order identify message");
2885 
2886 	data = imsg->data;
2887 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
2888 
2889 	switch (imsg->hdr.type)	{
2890 	case MSG_IDENTIFY_FEATURES:
2891 		if (datalen != sizeof feat)
2892 			fatalx("bad MSG_IDENTIFY_FEATURES size");
2893 		memcpy(&feat, data, sizeof feat);
2894 		c->term_features |= feat;
2895 		log_debug("client %p IDENTIFY_FEATURES %s", c,
2896 		    tty_get_features(feat));
2897 		break;
2898 	case MSG_IDENTIFY_FLAGS:
2899 		if (datalen != sizeof flags)
2900 			fatalx("bad MSG_IDENTIFY_FLAGS size");
2901 		memcpy(&flags, data, sizeof flags);
2902 		c->flags |= flags;
2903 		log_debug("client %p IDENTIFY_FLAGS %#x", c, flags);
2904 		break;
2905 	case MSG_IDENTIFY_LONGFLAGS:
2906 		if (datalen != sizeof longflags)
2907 			fatalx("bad MSG_IDENTIFY_LONGFLAGS size");
2908 		memcpy(&longflags, data, sizeof longflags);
2909 		c->flags |= longflags;
2910 		log_debug("client %p IDENTIFY_LONGFLAGS %#llx", c,
2911 		    (unsigned long long)longflags);
2912 		break;
2913 	case MSG_IDENTIFY_TERM:
2914 		if (datalen == 0 || data[datalen - 1] != '\0')
2915 			fatalx("bad MSG_IDENTIFY_TERM string");
2916 		if (*data == '\0')
2917 			c->term_name = xstrdup("unknown");
2918 		else
2919 			c->term_name = xstrdup(data);
2920 		log_debug("client %p IDENTIFY_TERM %s", c, data);
2921 		break;
2922 	case MSG_IDENTIFY_TERMINFO:
2923 		if (datalen == 0 || data[datalen - 1] != '\0')
2924 			fatalx("bad MSG_IDENTIFY_TERMINFO string");
2925 		c->term_caps = xreallocarray(c->term_caps, c->term_ncaps + 1,
2926 		    sizeof *c->term_caps);
2927 		c->term_caps[c->term_ncaps++] = xstrdup(data);
2928 		log_debug("client %p IDENTIFY_TERMINFO %s", c, data);
2929 		break;
2930 	case MSG_IDENTIFY_TTYNAME:
2931 		if (datalen == 0 || data[datalen - 1] != '\0')
2932 			fatalx("bad MSG_IDENTIFY_TTYNAME string");
2933 		c->ttyname = xstrdup(data);
2934 		log_debug("client %p IDENTIFY_TTYNAME %s", c, data);
2935 		break;
2936 	case MSG_IDENTIFY_CWD:
2937 		if (datalen == 0 || data[datalen - 1] != '\0')
2938 			fatalx("bad MSG_IDENTIFY_CWD string");
2939 		if (access(data, X_OK) == 0)
2940 			c->cwd = xstrdup(data);
2941 		else if ((home = find_home()) != NULL)
2942 			c->cwd = xstrdup(home);
2943 		else
2944 			c->cwd = xstrdup("/");
2945 		log_debug("client %p IDENTIFY_CWD %s", c, data);
2946 		break;
2947 	case MSG_IDENTIFY_STDIN:
2948 		if (datalen != 0)
2949 			fatalx("bad MSG_IDENTIFY_STDIN size");
2950 		c->fd = imsg->fd;
2951 		log_debug("client %p IDENTIFY_STDIN %d", c, imsg->fd);
2952 		break;
2953 	case MSG_IDENTIFY_STDOUT:
2954 		if (datalen != 0)
2955 			fatalx("bad MSG_IDENTIFY_STDOUT size");
2956 		c->out_fd = imsg->fd;
2957 		log_debug("client %p IDENTIFY_STDOUT %d", c, imsg->fd);
2958 		break;
2959 	case MSG_IDENTIFY_ENVIRON:
2960 		if (datalen == 0 || data[datalen - 1] != '\0')
2961 			fatalx("bad MSG_IDENTIFY_ENVIRON string");
2962 		if (strchr(data, '=') != NULL)
2963 			environ_put(c->environ, data, 0);
2964 		log_debug("client %p IDENTIFY_ENVIRON %s", c, data);
2965 		break;
2966 	case MSG_IDENTIFY_CLIENTPID:
2967 		if (datalen != sizeof c->pid)
2968 			fatalx("bad MSG_IDENTIFY_CLIENTPID size");
2969 		memcpy(&c->pid, data, sizeof c->pid);
2970 		log_debug("client %p IDENTIFY_CLIENTPID %ld", c, (long)c->pid);
2971 		break;
2972 	default:
2973 		break;
2974 	}
2975 
2976 	if (imsg->hdr.type != MSG_IDENTIFY_DONE)
2977 		return;
2978 	c->flags |= CLIENT_IDENTIFIED;
2979 
2980 	if (*c->ttyname != '\0')
2981 		name = xstrdup(c->ttyname);
2982 	else
2983 		xasprintf(&name, "client-%ld", (long)c->pid);
2984 	c->name = name;
2985 	log_debug("client %p name is %s", c, c->name);
2986 
2987 	if (c->flags & CLIENT_CONTROL)
2988 		control_start(c);
2989 	else if (c->fd != -1) {
2990 		if (tty_init(&c->tty, c) != 0) {
2991 			close(c->fd);
2992 			c->fd = -1;
2993 		} else {
2994 			tty_resize(&c->tty);
2995 			c->flags |= CLIENT_TERMINAL;
2996 		}
2997 		close(c->out_fd);
2998 		c->out_fd = -1;
2999 	}
3000 
3001 	/*
3002 	 * If this is the first client, load configuration files. Any later
3003 	 * clients are allowed to continue with their command even if the
3004 	 * config has not been loaded - they might have been run from inside it
3005 	 */
3006 	if ((~c->flags & CLIENT_EXIT) &&
3007 	     !cfg_finished &&
3008 	     c == TAILQ_FIRST(&clients))
3009 		start_cfg();
3010 }
3011 
3012 /* Handle shell message. */
3013 static void
3014 server_client_dispatch_shell(struct client *c)
3015 {
3016 	const char	*shell;
3017 
3018 	shell = options_get_string(global_s_options, "default-shell");
3019 	if (!checkshell(shell))
3020 		shell = _PATH_BSHELL;
3021 	proc_send(c->peer, MSG_SHELL, -1, shell, strlen(shell) + 1);
3022 
3023 	proc_kill_peer(c->peer);
3024 }
3025 
3026 /* Get client working directory. */
3027 const char *
3028 server_client_get_cwd(struct client *c, struct session *s)
3029 {
3030 	const char	*home;
3031 
3032 	if (!cfg_finished && cfg_client != NULL)
3033 		return (cfg_client->cwd);
3034 	if (c != NULL && c->session == NULL && c->cwd != NULL)
3035 		return (c->cwd);
3036 	if (s != NULL && s->cwd != NULL)
3037 		return (s->cwd);
3038 	if (c != NULL && (s = c->session) != NULL && s->cwd != NULL)
3039 		return (s->cwd);
3040 	if ((home = find_home()) != NULL)
3041 		return (home);
3042 	return ("/");
3043 }
3044 
3045 /* Get control client flags. */
3046 static uint64_t
3047 server_client_control_flags(struct client *c, const char *next)
3048 {
3049 	if (strcmp(next, "pause-after") == 0) {
3050 		c->pause_age = 0;
3051 		return (CLIENT_CONTROL_PAUSEAFTER);
3052 	}
3053 	if (sscanf(next, "pause-after=%u", &c->pause_age) == 1) {
3054 		c->pause_age *= 1000;
3055 		return (CLIENT_CONTROL_PAUSEAFTER);
3056 	}
3057 	if (strcmp(next, "no-output") == 0)
3058 		return (CLIENT_CONTROL_NOOUTPUT);
3059 	if (strcmp(next, "wait-exit") == 0)
3060 		return (CLIENT_CONTROL_WAITEXIT);
3061 	return (0);
3062 }
3063 
3064 /* Set client flags. */
3065 void
3066 server_client_set_flags(struct client *c, const char *flags)
3067 {
3068 	char	*s, *copy, *next;
3069 	uint64_t flag;
3070 	int	 not;
3071 
3072 	s = copy = xstrdup(flags);
3073 	while ((next = strsep(&s, ",")) != NULL) {
3074 		not = (*next == '!');
3075 		if (not)
3076 			next++;
3077 
3078 		if (c->flags & CLIENT_CONTROL)
3079 			flag = server_client_control_flags(c, next);
3080 		else
3081 			flag = 0;
3082 		if (strcmp(next, "read-only") == 0)
3083 			flag = CLIENT_READONLY;
3084 		else if (strcmp(next, "ignore-size") == 0)
3085 			flag = CLIENT_IGNORESIZE;
3086 		else if (strcmp(next, "active-pane") == 0)
3087 			flag = CLIENT_ACTIVEPANE;
3088 		if (flag == 0)
3089 			continue;
3090 
3091 		log_debug("client %s set flag %s", c->name, next);
3092 		if (not) {
3093 			if (c->flags & CLIENT_READONLY)
3094 				flag &= ~CLIENT_READONLY;
3095 			c->flags &= ~flag;
3096 		} else
3097 			c->flags |= flag;
3098 		if (flag == CLIENT_CONTROL_NOOUTPUT)
3099 			control_reset_offsets(c);
3100 	}
3101 	free(copy);
3102 	proc_send(c->peer, MSG_FLAGS, -1, &c->flags, sizeof c->flags);
3103 }
3104 
3105 /* Get client flags. This is only flags useful to show to users. */
3106 const char *
3107 server_client_get_flags(struct client *c)
3108 {
3109 	static char	s[256];
3110 	char	 	tmp[32];
3111 
3112 	*s = '\0';
3113 	if (c->flags & CLIENT_ATTACHED)
3114 		strlcat(s, "attached,", sizeof s);
3115 	if (c->flags & CLIENT_FOCUSED)
3116 		strlcat(s, "focused,", sizeof s);
3117 	if (c->flags & CLIENT_CONTROL)
3118 		strlcat(s, "control-mode,", sizeof s);
3119 	if (c->flags & CLIENT_IGNORESIZE)
3120 		strlcat(s, "ignore-size,", sizeof s);
3121 	if (c->flags & CLIENT_CONTROL_NOOUTPUT)
3122 		strlcat(s, "no-output,", sizeof s);
3123 	if (c->flags & CLIENT_CONTROL_WAITEXIT)
3124 		strlcat(s, "wait-exit,", sizeof s);
3125 	if (c->flags & CLIENT_CONTROL_PAUSEAFTER) {
3126 		xsnprintf(tmp, sizeof tmp, "pause-after=%u,",
3127 		    c->pause_age / 1000);
3128 		strlcat(s, tmp, sizeof s);
3129 	}
3130 	if (c->flags & CLIENT_READONLY)
3131 		strlcat(s, "read-only,", sizeof s);
3132 	if (c->flags & CLIENT_ACTIVEPANE)
3133 		strlcat(s, "active-pane,", sizeof s);
3134 	if (c->flags & CLIENT_SUSPENDED)
3135 		strlcat(s, "suspended,", sizeof s);
3136 	if (c->flags & CLIENT_UTF8)
3137 		strlcat(s, "UTF-8,", sizeof s);
3138 	if (*s != '\0')
3139 		s[strlen(s) - 1] = '\0';
3140 	return (s);
3141 }
3142 
3143 /* Get client window. */
3144 struct client_window *
3145 server_client_get_client_window(struct client *c, u_int id)
3146 {
3147 	struct client_window	cw = { .window = id };
3148 
3149 	return (RB_FIND(client_windows, &c->windows, &cw));
3150 }
3151 
3152 /* Add client window. */
3153 struct client_window *
3154 server_client_add_client_window(struct client *c, u_int id)
3155 {
3156 	struct client_window	*cw;
3157 
3158 	cw = server_client_get_client_window(c, id);
3159 	if (cw == NULL) {
3160 		cw = xcalloc(1, sizeof *cw);
3161 		cw->window = id;
3162 		RB_INSERT(client_windows, &c->windows, cw);
3163 	}
3164 	return (cw);
3165 }
3166 
3167 /* Get client active pane. */
3168 struct window_pane *
3169 server_client_get_pane(struct client *c)
3170 {
3171 	struct session		*s = c->session;
3172 	struct client_window	*cw;
3173 
3174 	if (s == NULL)
3175 		return (NULL);
3176 
3177 	if (~c->flags & CLIENT_ACTIVEPANE)
3178 		return (s->curw->window->active);
3179 	cw = server_client_get_client_window(c, s->curw->window->id);
3180 	if (cw == NULL)
3181 		return (s->curw->window->active);
3182 	return (cw->pane);
3183 }
3184 
3185 /* Set client active pane. */
3186 void
3187 server_client_set_pane(struct client *c, struct window_pane *wp)
3188 {
3189 	struct session		*s = c->session;
3190 	struct client_window	*cw;
3191 
3192 	if (s == NULL)
3193 		return;
3194 
3195 	cw = server_client_add_client_window(c, s->curw->window->id);
3196 	cw->pane = wp;
3197 	log_debug("%s pane now %%%u", c->name, wp->id);
3198 }
3199 
3200 /* Remove pane from client lists. */
3201 void
3202 server_client_remove_pane(struct window_pane *wp)
3203 {
3204 	struct client		*c;
3205 	struct window		*w = wp->window;
3206 	struct client_window	*cw;
3207 
3208 	TAILQ_FOREACH(c, &clients, entry) {
3209 		cw = server_client_get_client_window(c, w->id);
3210 		if (cw != NULL && cw->pane == wp) {
3211 			RB_REMOVE(client_windows, &c->windows, cw);
3212 			free(cw);
3213 		}
3214 	}
3215 }
3216