xref: /openbsd-src/usr.bin/tmux/server-client.c (revision f827f77fea138a5e050b847346fb2361ee0d1f85)
1 /* $OpenBSD: server-client.c,v 1.409 2024/09/16 20:28:22 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 #include <vis.h>
33 
34 #include "tmux.h"
35 
36 static void	server_client_free(int, short, void *);
37 static void	server_client_check_pane_resize(struct window_pane *);
38 static void	server_client_check_pane_buffer(struct window_pane *);
39 static void	server_client_check_window_resize(struct window *);
40 static key_code	server_client_check_mouse(struct client *, struct key_event *);
41 static void	server_client_repeat_timer(int, short, void *);
42 static void	server_client_click_timer(int, short, void *);
43 static void	server_client_check_exit(struct client *);
44 static void	server_client_check_redraw(struct client *);
45 static void	server_client_check_modes(struct client *);
46 static void	server_client_set_title(struct client *);
47 static void	server_client_set_path(struct client *);
48 static void	server_client_reset_state(struct client *);
49 static int 	server_client_is_bracket_pasting(struct client *, key_code);
50 static int	server_client_assume_paste(struct session *);
51 static void	server_client_update_latest(struct client *);
52 
53 static void	server_client_dispatch(struct imsg *, void *);
54 static void	server_client_dispatch_command(struct client *, struct imsg *);
55 static void	server_client_dispatch_identify(struct client *, struct imsg *);
56 static void	server_client_dispatch_shell(struct client *);
57 
58 /* Compare client windows. */
59 static int
60 server_client_window_cmp(struct client_window *cw1,
61     struct client_window *cw2)
62 {
63 	if (cw1->window < cw2->window)
64 		return (-1);
65 	if (cw1->window > cw2->window)
66 		return (1);
67 	return (0);
68 }
69 RB_GENERATE(client_windows, client_window, entry, server_client_window_cmp);
70 
71 /* Number of attached clients. */
72 u_int
73 server_client_how_many(void)
74 {
75 	struct client  	*c;
76 	u_int		 n;
77 
78 	n = 0;
79 	TAILQ_FOREACH(c, &clients, entry) {
80 		if (c->session != NULL && (~c->flags & CLIENT_UNATTACHEDFLAGS))
81 			n++;
82 	}
83 	return (n);
84 }
85 
86 /* Overlay timer callback. */
87 static void
88 server_client_overlay_timer(__unused int fd, __unused short events, void *data)
89 {
90 	server_client_clear_overlay(data);
91 }
92 
93 /* Set an overlay on client. */
94 void
95 server_client_set_overlay(struct client *c, u_int delay,
96     overlay_check_cb checkcb, overlay_mode_cb modecb,
97     overlay_draw_cb drawcb, overlay_key_cb keycb, overlay_free_cb freecb,
98     overlay_resize_cb resizecb, void *data)
99 {
100 	struct timeval	tv;
101 
102 	if (c->overlay_draw != NULL)
103 		server_client_clear_overlay(c);
104 
105 	tv.tv_sec = delay / 1000;
106 	tv.tv_usec = (delay % 1000) * 1000L;
107 
108 	if (event_initialized(&c->overlay_timer))
109 		evtimer_del(&c->overlay_timer);
110 	evtimer_set(&c->overlay_timer, server_client_overlay_timer, c);
111 	if (delay != 0)
112 		evtimer_add(&c->overlay_timer, &tv);
113 
114 	c->overlay_check = checkcb;
115 	c->overlay_mode = modecb;
116 	c->overlay_draw = drawcb;
117 	c->overlay_key = keycb;
118 	c->overlay_free = freecb;
119 	c->overlay_resize = resizecb;
120 	c->overlay_data = data;
121 
122 	if (c->overlay_check == NULL)
123 		c->tty.flags |= TTY_FREEZE;
124 	if (c->overlay_mode == NULL)
125 		c->tty.flags |= TTY_NOCURSOR;
126 	server_redraw_client(c);
127 }
128 
129 /* Clear overlay mode on client. */
130 void
131 server_client_clear_overlay(struct client *c)
132 {
133 	if (c->overlay_draw == NULL)
134 		return;
135 
136 	if (event_initialized(&c->overlay_timer))
137 		evtimer_del(&c->overlay_timer);
138 
139 	if (c->overlay_free != NULL)
140 		c->overlay_free(c, c->overlay_data);
141 
142 	c->overlay_check = NULL;
143 	c->overlay_mode = NULL;
144 	c->overlay_draw = NULL;
145 	c->overlay_key = NULL;
146 	c->overlay_free = NULL;
147 	c->overlay_data = NULL;
148 
149 	c->tty.flags &= ~(TTY_FREEZE|TTY_NOCURSOR);
150 	server_redraw_client(c);
151 }
152 
153 /*
154  * Given overlay position and dimensions, return parts of the input range which
155  * are visible.
156  */
157 void
158 server_client_overlay_range(u_int x, u_int y, u_int sx, u_int sy, u_int px,
159     u_int py, u_int nx, struct overlay_ranges *r)
160 {
161 	u_int	ox, onx;
162 
163 	/* Return up to 2 ranges. */
164 	r->px[2] = 0;
165 	r->nx[2] = 0;
166 
167 	/* Trivial case of no overlap in the y direction. */
168 	if (py < y || py > y + sy - 1) {
169 		r->px[0] = px;
170 		r->nx[0] = nx;
171 		r->px[1] = 0;
172 		r->nx[1] = 0;
173 		return;
174 	}
175 
176 	/* Visible bit to the left of the popup. */
177 	if (px < x) {
178 		r->px[0] = px;
179 		r->nx[0] = x - px;
180 		if (r->nx[0] > nx)
181 			r->nx[0] = nx;
182 	} else {
183 		r->px[0] = 0;
184 		r->nx[0] = 0;
185 	}
186 
187 	/* Visible bit to the right of the popup. */
188 	ox = x + sx;
189 	if (px > ox)
190 		ox = px;
191 	onx = px + nx;
192 	if (onx > ox) {
193 		r->px[1] = ox;
194 		r->nx[1] = onx - ox;
195 	} else {
196 		r->px[1] = 0;
197 		r->nx[1] = 0;
198 	}
199 }
200 
201 /* Check if this client is inside this server. */
202 int
203 server_client_check_nested(struct client *c)
204 {
205 	struct environ_entry	*envent;
206 	struct window_pane	*wp;
207 
208 	envent = environ_find(c->environ, "TMUX");
209 	if (envent == NULL || *envent->value == '\0')
210 		return (0);
211 
212 	RB_FOREACH(wp, window_pane_tree, &all_window_panes) {
213 		if (strcmp(wp->tty, c->ttyname) == 0)
214 			return (1);
215 	}
216 	return (0);
217 }
218 
219 /* Set client key table. */
220 void
221 server_client_set_key_table(struct client *c, const char *name)
222 {
223 	if (name == NULL)
224 		name = server_client_get_key_table(c);
225 
226 	key_bindings_unref_table(c->keytable);
227 	c->keytable = key_bindings_get_table(name, 1);
228 	c->keytable->references++;
229 	if (gettimeofday(&c->keytable->activity_time, NULL) != 0)
230 		fatal("gettimeofday failed");
231 }
232 
233 static uint64_t
234 server_client_key_table_activity_diff(struct client *c)
235 {
236 	struct timeval	diff;
237 
238 	timersub(&c->activity_time, &c->keytable->activity_time, &diff);
239 	return ((diff.tv_sec * 1000ULL) + (diff.tv_usec / 1000ULL));
240 }
241 
242 /* Get default key table. */
243 const char *
244 server_client_get_key_table(struct client *c)
245 {
246 	struct session	*s = c->session;
247 	const char	*name;
248 
249 	if (s == NULL)
250 		return ("root");
251 
252 	name = options_get_string(s->options, "key-table");
253 	if (*name == '\0')
254 		return ("root");
255 	return (name);
256 }
257 
258 /* Is this table the default key table? */
259 static int
260 server_client_is_default_key_table(struct client *c, struct key_table *table)
261 {
262 	return (strcmp(table->name, server_client_get_key_table(c)) == 0);
263 }
264 
265 /* Create a new client. */
266 struct client *
267 server_client_create(int fd)
268 {
269 	struct client	*c;
270 
271 	setblocking(fd, 0);
272 
273 	c = xcalloc(1, sizeof *c);
274 	c->references = 1;
275 	c->peer = proc_add_peer(server_proc, fd, server_client_dispatch, c);
276 
277 	if (gettimeofday(&c->creation_time, NULL) != 0)
278 		fatal("gettimeofday failed");
279 	memcpy(&c->activity_time, &c->creation_time, sizeof c->activity_time);
280 
281 	c->environ = environ_create();
282 
283 	c->fd = -1;
284 	c->out_fd = -1;
285 
286 	c->queue = cmdq_new();
287 	RB_INIT(&c->windows);
288 	RB_INIT(&c->files);
289 
290 	c->tty.sx = 80;
291 	c->tty.sy = 24;
292 
293 	status_init(c);
294 	c->flags |= CLIENT_FOCUSED;
295 
296 	c->keytable = key_bindings_get_table("root", 1);
297 	c->keytable->references++;
298 
299 	evtimer_set(&c->repeat_timer, server_client_repeat_timer, c);
300 	evtimer_set(&c->click_timer, server_client_click_timer, c);
301 
302 	TAILQ_INSERT_TAIL(&clients, c, entry);
303 	log_debug("new client %p", c);
304 	return (c);
305 }
306 
307 /* Open client terminal if needed. */
308 int
309 server_client_open(struct client *c, char **cause)
310 {
311 	const char	*ttynam = _PATH_TTY;
312 
313 	if (c->flags & CLIENT_CONTROL)
314 		return (0);
315 
316 	if (strcmp(c->ttyname, ttynam) == 0||
317 	    ((isatty(STDIN_FILENO) &&
318 	    (ttynam = ttyname(STDIN_FILENO)) != NULL &&
319 	    strcmp(c->ttyname, ttynam) == 0) ||
320 	    (isatty(STDOUT_FILENO) &&
321 	    (ttynam = ttyname(STDOUT_FILENO)) != NULL &&
322 	    strcmp(c->ttyname, ttynam) == 0) ||
323 	    (isatty(STDERR_FILENO) &&
324 	    (ttynam = ttyname(STDERR_FILENO)) != NULL &&
325 	    strcmp(c->ttyname, ttynam) == 0))) {
326 		xasprintf(cause, "can't use %s", c->ttyname);
327 		return (-1);
328 	}
329 
330 	if (!(c->flags & CLIENT_TERMINAL)) {
331 		*cause = xstrdup("not a terminal");
332 		return (-1);
333 	}
334 
335 	if (tty_open(&c->tty, cause) != 0)
336 		return (-1);
337 
338 	return (0);
339 }
340 
341 /* Lost an attached client. */
342 static void
343 server_client_attached_lost(struct client *c)
344 {
345 	struct session	*s;
346 	struct window	*w;
347 	struct client	*loop;
348 	struct client	*found;
349 
350 	log_debug("lost attached client %p", c);
351 
352 	/*
353 	 * By this point the session in the client has been cleared so walk all
354 	 * windows to find any with this client as the latest.
355 	 */
356 	RB_FOREACH(w, windows, &windows) {
357 		if (w->latest != c)
358 			continue;
359 
360 		found = NULL;
361 		TAILQ_FOREACH(loop, &clients, entry) {
362 			s = loop->session;
363 			if (loop == c || s == NULL || s->curw->window != w)
364 				continue;
365 			if (found == NULL || timercmp(&loop->activity_time,
366 			    &found->activity_time, >))
367 				found = loop;
368 		}
369 		if (found != NULL)
370 			server_client_update_latest(found);
371 	}
372 }
373 
374 /* Set client session. */
375 void
376 server_client_set_session(struct client *c, struct session *s)
377 {
378 	struct session	*old = c->session;
379 
380 	if (s != NULL && c->session != NULL && c->session != s)
381 		c->last_session = c->session;
382 	else if (s == NULL)
383 		c->last_session = NULL;
384 	c->session = s;
385 	c->flags |= CLIENT_FOCUSED;
386 
387 	if (old != NULL && old->curw != NULL)
388 		window_update_focus(old->curw->window);
389 	if (s != NULL) {
390 		recalculate_sizes();
391 		window_update_focus(s->curw->window);
392 		session_update_activity(s, NULL);
393 		gettimeofday(&s->last_attached_time, NULL);
394 		s->curw->flags &= ~WINLINK_ALERTFLAGS;
395 		s->curw->window->latest = c;
396 		alerts_check_session(s);
397 		tty_update_client_offset(c);
398 		status_timer_start(c);
399 		notify_client("client-session-changed", c);
400 		server_redraw_client(c);
401 	}
402 
403 	server_check_unattached();
404 	server_update_socket();
405 }
406 
407 /* Lost a client. */
408 void
409 server_client_lost(struct client *c)
410 {
411 	struct client_file	*cf, *cf1;
412 	struct client_window	*cw, *cw1;
413 
414 	c->flags |= CLIENT_DEAD;
415 
416 	server_client_clear_overlay(c);
417 	status_prompt_clear(c);
418 	status_message_clear(c);
419 
420 	RB_FOREACH_SAFE(cf, client_files, &c->files, cf1) {
421 		cf->error = EINTR;
422 		file_fire_done(cf);
423 	}
424 	RB_FOREACH_SAFE(cw, client_windows, &c->windows, cw1) {
425 		RB_REMOVE(client_windows, &c->windows, cw);
426 		free(cw);
427 	}
428 
429 	TAILQ_REMOVE(&clients, c, entry);
430 	log_debug("lost client %p", c);
431 
432 	if (c->flags & CLIENT_ATTACHED) {
433 		server_client_attached_lost(c);
434 		notify_client("client-detached", c);
435 	}
436 
437 	if (c->flags & CLIENT_CONTROL)
438 		control_stop(c);
439 	if (c->flags & CLIENT_TERMINAL)
440 		tty_free(&c->tty);
441 	free(c->ttyname);
442 	free(c->clipboard_panes);
443 
444 	free(c->term_name);
445 	free(c->term_type);
446 	tty_term_free_list(c->term_caps, c->term_ncaps);
447 
448 	status_free(c);
449 
450 	free(c->title);
451 	free((void *)c->cwd);
452 
453 	evtimer_del(&c->repeat_timer);
454 	evtimer_del(&c->click_timer);
455 
456 	key_bindings_unref_table(c->keytable);
457 
458 	free(c->message_string);
459 	if (event_initialized(&c->message_timer))
460 		evtimer_del(&c->message_timer);
461 
462 	free(c->prompt_saved);
463 	free(c->prompt_string);
464 	free(c->prompt_buffer);
465 
466 	format_lost_client(c);
467 	environ_free(c->environ);
468 
469 	proc_remove_peer(c->peer);
470 	c->peer = NULL;
471 
472 	if (c->out_fd != -1)
473 		close(c->out_fd);
474 	if (c->fd != -1) {
475 		close(c->fd);
476 		c->fd = -1;
477 	}
478 	server_client_unref(c);
479 
480 	server_add_accept(0); /* may be more file descriptors now */
481 
482 	recalculate_sizes();
483 	server_check_unattached();
484 	server_update_socket();
485 }
486 
487 /* Remove reference from a client. */
488 void
489 server_client_unref(struct client *c)
490 {
491 	log_debug("unref client %p (%d references)", c, c->references);
492 
493 	c->references--;
494 	if (c->references == 0)
495 		event_once(-1, EV_TIMEOUT, server_client_free, c, NULL);
496 }
497 
498 /* Free dead client. */
499 static void
500 server_client_free(__unused int fd, __unused short events, void *arg)
501 {
502 	struct client	*c = arg;
503 
504 	log_debug("free client %p (%d references)", c, c->references);
505 
506 	cmdq_free(c->queue);
507 
508 	if (c->references == 0) {
509 		free((void *)c->name);
510 		free(c);
511 	}
512 }
513 
514 /* Suspend a client. */
515 void
516 server_client_suspend(struct client *c)
517 {
518 	struct session	*s = c->session;
519 
520 	if (s == NULL || (c->flags & CLIENT_UNATTACHEDFLAGS))
521 		return;
522 
523 	tty_stop_tty(&c->tty);
524 	c->flags |= CLIENT_SUSPENDED;
525 	proc_send(c->peer, MSG_SUSPEND, -1, NULL, 0);
526 }
527 
528 /* Detach a client. */
529 void
530 server_client_detach(struct client *c, enum msgtype msgtype)
531 {
532 	struct session	*s = c->session;
533 
534 	if (s == NULL || (c->flags & CLIENT_NODETACHFLAGS))
535 		return;
536 
537 	c->flags |= CLIENT_EXIT;
538 
539 	c->exit_type = CLIENT_EXIT_DETACH;
540 	c->exit_msgtype = msgtype;
541 	c->exit_session = xstrdup(s->name);
542 }
543 
544 /* Execute command to replace a client. */
545 void
546 server_client_exec(struct client *c, const char *cmd)
547 {
548 	struct session	*s = c->session;
549 	char		*msg;
550 	const char	*shell;
551 	size_t		 cmdsize, shellsize;
552 
553 	if (*cmd == '\0')
554 		return;
555 	cmdsize = strlen(cmd) + 1;
556 
557 	if (s != NULL)
558 		shell = options_get_string(s->options, "default-shell");
559 	else
560 		shell = options_get_string(global_s_options, "default-shell");
561 	if (!checkshell(shell))
562 		shell = _PATH_BSHELL;
563 	shellsize = strlen(shell) + 1;
564 
565 	msg = xmalloc(cmdsize + shellsize);
566 	memcpy(msg, cmd, cmdsize);
567 	memcpy(msg + cmdsize, shell, shellsize);
568 
569 	proc_send(c->peer, MSG_EXEC, -1, msg, cmdsize + shellsize);
570 	free(msg);
571 }
572 
573 /* Check for mouse keys. */
574 static key_code
575 server_client_check_mouse(struct client *c, struct key_event *event)
576 {
577 	struct mouse_event	*m = &event->m;
578 	struct session		*s = c->session, *fs;
579 	struct winlink		*fwl;
580 	struct window_pane	*wp, *fwp;
581 	u_int			 x, y, b, sx, sy, px, py;
582 	int			 ignore = 0;
583 	key_code		 key;
584 	struct timeval		 tv;
585 	struct style_range	*sr;
586 	enum { NOTYPE,
587 	       MOVE,
588 	       DOWN,
589 	       UP,
590 	       DRAG,
591 	       WHEEL,
592 	       SECOND,
593 	       DOUBLE,
594 	       TRIPLE } type = NOTYPE;
595 	enum { NOWHERE,
596 	       PANE,
597 	       STATUS,
598 	       STATUS_LEFT,
599 	       STATUS_RIGHT,
600 	       STATUS_DEFAULT,
601 	       BORDER } where = NOWHERE;
602 
603 	log_debug("%s mouse %02x at %u,%u (last %u,%u) (%d)", c->name, m->b,
604 	    m->x, m->y, m->lx, m->ly, c->tty.mouse_drag_flag);
605 
606 	/* What type of event is this? */
607 	if (event->key == KEYC_DOUBLECLICK) {
608 		type = DOUBLE;
609 		x = m->x, y = m->y, b = m->b;
610 		ignore = 1;
611 		log_debug("double-click at %u,%u", x, y);
612 	} else if ((m->sgr_type != ' ' &&
613 	    MOUSE_DRAG(m->sgr_b) &&
614 	    MOUSE_RELEASE(m->sgr_b)) ||
615 	    (m->sgr_type == ' ' &&
616 	    MOUSE_DRAG(m->b) &&
617 	    MOUSE_RELEASE(m->b) &&
618 	    MOUSE_RELEASE(m->lb))) {
619 		type = MOVE;
620 		x = m->x, y = m->y, b = 0;
621 		log_debug("move at %u,%u", x, y);
622 	} else if (MOUSE_DRAG(m->b)) {
623 		type = DRAG;
624 		if (c->tty.mouse_drag_flag) {
625 			x = m->x, y = m->y, b = m->b;
626 			if (x == m->lx && y == m->ly)
627 				return (KEYC_UNKNOWN);
628 			log_debug("drag update at %u,%u", x, y);
629 		} else {
630 			x = m->lx, y = m->ly, b = m->lb;
631 			log_debug("drag start at %u,%u", x, y);
632 		}
633 	} else if (MOUSE_WHEEL(m->b)) {
634 		type = WHEEL;
635 		x = m->x, y = m->y, b = m->b;
636 		log_debug("wheel at %u,%u", x, y);
637 	} else if (MOUSE_RELEASE(m->b)) {
638 		type = UP;
639 		x = m->x, y = m->y, b = m->lb;
640 		if (m->sgr_type == 'm')
641 			b = m->sgr_b;
642 		log_debug("up at %u,%u", x, y);
643 	} else {
644 		if (c->flags & CLIENT_DOUBLECLICK) {
645 			evtimer_del(&c->click_timer);
646 			c->flags &= ~CLIENT_DOUBLECLICK;
647 			if (m->b == c->click_button) {
648 				type = SECOND;
649 				x = m->x, y = m->y, b = m->b;
650 				log_debug("second-click at %u,%u", x, y);
651 				c->flags |= CLIENT_TRIPLECLICK;
652 			}
653 		} else if (c->flags & CLIENT_TRIPLECLICK) {
654 			evtimer_del(&c->click_timer);
655 			c->flags &= ~CLIENT_TRIPLECLICK;
656 			if (m->b == c->click_button) {
657 				type = TRIPLE;
658 				x = m->x, y = m->y, b = m->b;
659 				log_debug("triple-click at %u,%u", x, y);
660 				goto have_event;
661 			}
662 		}
663 
664 		/* DOWN is the only remaining event type. */
665 		if (type == NOTYPE) {
666 			type = DOWN;
667 			x = m->x, y = m->y, b = m->b;
668 			log_debug("down at %u,%u", x, y);
669 			c->flags |= CLIENT_DOUBLECLICK;
670 		}
671 
672 		if (KEYC_CLICK_TIMEOUT != 0) {
673 			memcpy(&c->click_event, m, sizeof c->click_event);
674 			c->click_button = m->b;
675 
676 			log_debug("click timer started");
677 			tv.tv_sec = KEYC_CLICK_TIMEOUT / 1000;
678 			tv.tv_usec = (KEYC_CLICK_TIMEOUT % 1000) * 1000L;
679 			evtimer_del(&c->click_timer);
680 			evtimer_add(&c->click_timer, &tv);
681 		}
682 	}
683 
684 have_event:
685 	if (type == NOTYPE)
686 		return (KEYC_UNKNOWN);
687 
688 	/* Save the session. */
689 	m->s = s->id;
690 	m->w = -1;
691 	m->wp = -1;
692 	m->ignore = ignore;
693 
694 	/* Is this on the status line? */
695 	m->statusat = status_at_line(c);
696 	m->statuslines = status_line_size(c);
697 	if (m->statusat != -1 &&
698 	    y >= (u_int)m->statusat &&
699 	    y < m->statusat + m->statuslines) {
700 		sr = status_get_range(c, x, y - m->statusat);
701 		if (sr == NULL) {
702 			where = STATUS_DEFAULT;
703 		} else {
704 			switch (sr->type) {
705 			case STYLE_RANGE_NONE:
706 				return (KEYC_UNKNOWN);
707 			case STYLE_RANGE_LEFT:
708 				log_debug("mouse range: left");
709 				where = STATUS_LEFT;
710 				break;
711 			case STYLE_RANGE_RIGHT:
712 				log_debug("mouse range: right");
713 				where = STATUS_RIGHT;
714 				break;
715 			case STYLE_RANGE_PANE:
716 				fwp = window_pane_find_by_id(sr->argument);
717 				if (fwp == NULL)
718 					return (KEYC_UNKNOWN);
719 				m->wp = sr->argument;
720 
721 				log_debug("mouse range: pane %%%u", m->wp);
722 				where = STATUS;
723 				break;
724 			case STYLE_RANGE_WINDOW:
725 				fwl = winlink_find_by_index(&s->windows,
726 				    sr->argument);
727 				if (fwl == NULL)
728 					return (KEYC_UNKNOWN);
729 				m->w = fwl->window->id;
730 
731 				log_debug("mouse range: window @%u", m->w);
732 				where = STATUS;
733 				break;
734 			case STYLE_RANGE_SESSION:
735 				fs = session_find_by_id(sr->argument);
736 				if (fs == NULL)
737 					return (KEYC_UNKNOWN);
738 				m->s = sr->argument;
739 
740 				log_debug("mouse range: session $%u", m->s);
741 				where = STATUS;
742 				break;
743 			case STYLE_RANGE_USER:
744 				where = STATUS;
745 				break;
746 			}
747 		}
748 	}
749 
750 	/* Not on status line. Adjust position and check for border or pane. */
751 	if (where == NOWHERE) {
752 		px = x;
753 		if (m->statusat == 0 && y >= m->statuslines)
754 			py = y - m->statuslines;
755 		else if (m->statusat > 0 && y >= (u_int)m->statusat)
756 			py = m->statusat - 1;
757 		else
758 			py = y;
759 
760 		tty_window_offset(&c->tty, &m->ox, &m->oy, &sx, &sy);
761 		log_debug("mouse window @%u at %u,%u (%ux%u)",
762 		    s->curw->window->id, m->ox, m->oy, sx, sy);
763 		if (px > sx || py > sy)
764 			return (KEYC_UNKNOWN);
765 		px = px + m->ox;
766 		py = py + m->oy;
767 
768 		/* Try the pane borders if not zoomed. */
769 		if (~s->curw->window->flags & WINDOW_ZOOMED) {
770 			TAILQ_FOREACH(wp, &s->curw->window->panes, entry) {
771 				if ((wp->xoff + wp->sx == px &&
772 				    wp->yoff <= 1 + py &&
773 				    wp->yoff + wp->sy >= py) ||
774 				    (wp->yoff + wp->sy == py &&
775 				    wp->xoff <= 1 + px &&
776 				    wp->xoff + wp->sx >= px))
777 					break;
778 			}
779 			if (wp != NULL)
780 				where = BORDER;
781 		}
782 
783 		/* Otherwise try inside the pane. */
784 		if (where == NOWHERE) {
785 			wp = window_get_active_at(s->curw->window, px, py);
786 			if (wp != NULL)
787 				where = PANE;
788 			else
789 				return (KEYC_UNKNOWN);
790 		}
791 		if (where == PANE)
792 			log_debug("mouse %u,%u on pane %%%u", x, y, wp->id);
793 		else if (where == BORDER)
794 			log_debug("mouse on pane %%%u border", wp->id);
795 		m->wp = wp->id;
796 		m->w = wp->window->id;
797 	}
798 
799 	/* Stop dragging if needed. */
800 	if (type != DRAG && type != WHEEL && c->tty.mouse_drag_flag != 0) {
801 		if (c->tty.mouse_drag_release != NULL)
802 			c->tty.mouse_drag_release(c, m);
803 
804 		c->tty.mouse_drag_update = NULL;
805 		c->tty.mouse_drag_release = NULL;
806 
807 		/*
808 		 * End a mouse drag by passing a MouseDragEnd key corresponding
809 		 * to the button that started the drag.
810 		 */
811 		switch (c->tty.mouse_drag_flag - 1) {
812 		case MOUSE_BUTTON_1:
813 			if (where == PANE)
814 				key = KEYC_MOUSEDRAGEND1_PANE;
815 			if (where == STATUS)
816 				key = KEYC_MOUSEDRAGEND1_STATUS;
817 			if (where == STATUS_LEFT)
818 				key = KEYC_MOUSEDRAGEND1_STATUS_LEFT;
819 			if (where == STATUS_RIGHT)
820 				key = KEYC_MOUSEDRAGEND1_STATUS_RIGHT;
821 			if (where == STATUS_DEFAULT)
822 				key = KEYC_MOUSEDRAGEND1_STATUS_DEFAULT;
823 			if (where == BORDER)
824 				key = KEYC_MOUSEDRAGEND1_BORDER;
825 			break;
826 		case MOUSE_BUTTON_2:
827 			if (where == PANE)
828 				key = KEYC_MOUSEDRAGEND2_PANE;
829 			if (where == STATUS)
830 				key = KEYC_MOUSEDRAGEND2_STATUS;
831 			if (where == STATUS_LEFT)
832 				key = KEYC_MOUSEDRAGEND2_STATUS_LEFT;
833 			if (where == STATUS_RIGHT)
834 				key = KEYC_MOUSEDRAGEND2_STATUS_RIGHT;
835 			if (where == STATUS_DEFAULT)
836 				key = KEYC_MOUSEDRAGEND2_STATUS_DEFAULT;
837 			if (where == BORDER)
838 				key = KEYC_MOUSEDRAGEND2_BORDER;
839 			break;
840 		case MOUSE_BUTTON_3:
841 			if (where == PANE)
842 				key = KEYC_MOUSEDRAGEND3_PANE;
843 			if (where == STATUS)
844 				key = KEYC_MOUSEDRAGEND3_STATUS;
845 			if (where == STATUS_LEFT)
846 				key = KEYC_MOUSEDRAGEND3_STATUS_LEFT;
847 			if (where == STATUS_RIGHT)
848 				key = KEYC_MOUSEDRAGEND3_STATUS_RIGHT;
849 			if (where == STATUS_DEFAULT)
850 				key = KEYC_MOUSEDRAGEND3_STATUS_DEFAULT;
851 			if (where == BORDER)
852 				key = KEYC_MOUSEDRAGEND3_BORDER;
853 			break;
854 		case MOUSE_BUTTON_6:
855 			if (where == PANE)
856 				key = KEYC_MOUSEDRAGEND6_PANE;
857 			if (where == STATUS)
858 				key = KEYC_MOUSEDRAGEND6_STATUS;
859 			if (where == STATUS_LEFT)
860 				key = KEYC_MOUSEDRAGEND6_STATUS_LEFT;
861 			if (where == STATUS_RIGHT)
862 				key = KEYC_MOUSEDRAGEND6_STATUS_RIGHT;
863 			if (where == STATUS_DEFAULT)
864 				key = KEYC_MOUSEDRAGEND6_STATUS_DEFAULT;
865 			if (where == BORDER)
866 				key = KEYC_MOUSEDRAGEND6_BORDER;
867 			break;
868 		case MOUSE_BUTTON_7:
869 			if (where == PANE)
870 				key = KEYC_MOUSEDRAGEND7_PANE;
871 			if (where == STATUS)
872 				key = KEYC_MOUSEDRAGEND7_STATUS;
873 			if (where == STATUS_LEFT)
874 				key = KEYC_MOUSEDRAGEND7_STATUS_LEFT;
875 			if (where == STATUS_RIGHT)
876 				key = KEYC_MOUSEDRAGEND7_STATUS_RIGHT;
877 			if (where == STATUS_DEFAULT)
878 				key = KEYC_MOUSEDRAGEND7_STATUS_DEFAULT;
879 			if (where == BORDER)
880 				key = KEYC_MOUSEDRAGEND7_BORDER;
881 			break;
882 		case MOUSE_BUTTON_8:
883 			if (where == PANE)
884 				key = KEYC_MOUSEDRAGEND8_PANE;
885 			if (where == STATUS)
886 				key = KEYC_MOUSEDRAGEND8_STATUS;
887 			if (where == STATUS_LEFT)
888 				key = KEYC_MOUSEDRAGEND8_STATUS_LEFT;
889 			if (where == STATUS_RIGHT)
890 				key = KEYC_MOUSEDRAGEND8_STATUS_RIGHT;
891 			if (where == STATUS_DEFAULT)
892 				key = KEYC_MOUSEDRAGEND8_STATUS_DEFAULT;
893 			if (where == BORDER)
894 				key = KEYC_MOUSEDRAGEND8_BORDER;
895 			break;
896 		case MOUSE_BUTTON_9:
897 			if (where == PANE)
898 				key = KEYC_MOUSEDRAGEND9_PANE;
899 			if (where == STATUS)
900 				key = KEYC_MOUSEDRAGEND9_STATUS;
901 			if (where == STATUS_LEFT)
902 				key = KEYC_MOUSEDRAGEND9_STATUS_LEFT;
903 			if (where == STATUS_RIGHT)
904 				key = KEYC_MOUSEDRAGEND9_STATUS_RIGHT;
905 			if (where == STATUS_DEFAULT)
906 				key = KEYC_MOUSEDRAGEND9_STATUS_DEFAULT;
907 			if (where == BORDER)
908 				key = KEYC_MOUSEDRAGEND9_BORDER;
909 			break;
910 		case MOUSE_BUTTON_10:
911 			if (where == PANE)
912 				key = KEYC_MOUSEDRAGEND10_PANE;
913 			if (where == STATUS)
914 				key = KEYC_MOUSEDRAGEND10_STATUS;
915 			if (where == STATUS_LEFT)
916 				key = KEYC_MOUSEDRAGEND10_STATUS_LEFT;
917 			if (where == STATUS_RIGHT)
918 				key = KEYC_MOUSEDRAGEND10_STATUS_RIGHT;
919 			if (where == STATUS_DEFAULT)
920 				key = KEYC_MOUSEDRAGEND10_STATUS_DEFAULT;
921 			if (where == BORDER)
922 				key = KEYC_MOUSEDRAGEND10_BORDER;
923 			break;
924 		case MOUSE_BUTTON_11:
925 			if (where == PANE)
926 				key = KEYC_MOUSEDRAGEND11_PANE;
927 			if (where == STATUS)
928 				key = KEYC_MOUSEDRAGEND11_STATUS;
929 			if (where == STATUS_LEFT)
930 				key = KEYC_MOUSEDRAGEND11_STATUS_LEFT;
931 			if (where == STATUS_RIGHT)
932 				key = KEYC_MOUSEDRAGEND11_STATUS_RIGHT;
933 			if (where == STATUS_DEFAULT)
934 				key = KEYC_MOUSEDRAGEND11_STATUS_DEFAULT;
935 			if (where == BORDER)
936 				key = KEYC_MOUSEDRAGEND11_BORDER;
937 			break;
938 		default:
939 			key = KEYC_MOUSE;
940 			break;
941 		}
942 		c->tty.mouse_drag_flag = 0;
943 		goto out;
944 	}
945 
946 	/* Convert to a key binding. */
947 	key = KEYC_UNKNOWN;
948 	switch (type) {
949 	case NOTYPE:
950 		break;
951 	case MOVE:
952 		if (where == PANE)
953 			key = KEYC_MOUSEMOVE_PANE;
954 		if (where == STATUS)
955 			key = KEYC_MOUSEMOVE_STATUS;
956 		if (where == STATUS_LEFT)
957 			key = KEYC_MOUSEMOVE_STATUS_LEFT;
958 		if (where == STATUS_RIGHT)
959 			key = KEYC_MOUSEMOVE_STATUS_RIGHT;
960 		if (where == STATUS_DEFAULT)
961 			key = KEYC_MOUSEMOVE_STATUS_DEFAULT;
962 		if (where == BORDER)
963 			key = KEYC_MOUSEMOVE_BORDER;
964 		break;
965 	case DRAG:
966 		if (c->tty.mouse_drag_update != NULL)
967 			key = KEYC_DRAGGING;
968 		else {
969 			switch (MOUSE_BUTTONS(b)) {
970 			case MOUSE_BUTTON_1:
971 				if (where == PANE)
972 					key = KEYC_MOUSEDRAG1_PANE;
973 				if (where == STATUS)
974 					key = KEYC_MOUSEDRAG1_STATUS;
975 				if (where == STATUS_LEFT)
976 					key = KEYC_MOUSEDRAG1_STATUS_LEFT;
977 				if (where == STATUS_RIGHT)
978 					key = KEYC_MOUSEDRAG1_STATUS_RIGHT;
979 				if (where == STATUS_DEFAULT)
980 					key = KEYC_MOUSEDRAG1_STATUS_DEFAULT;
981 				if (where == BORDER)
982 					key = KEYC_MOUSEDRAG1_BORDER;
983 				break;
984 			case MOUSE_BUTTON_2:
985 				if (where == PANE)
986 					key = KEYC_MOUSEDRAG2_PANE;
987 				if (where == STATUS)
988 					key = KEYC_MOUSEDRAG2_STATUS;
989 				if (where == STATUS_LEFT)
990 					key = KEYC_MOUSEDRAG2_STATUS_LEFT;
991 				if (where == STATUS_RIGHT)
992 					key = KEYC_MOUSEDRAG2_STATUS_RIGHT;
993 				if (where == STATUS_DEFAULT)
994 					key = KEYC_MOUSEDRAG2_STATUS_DEFAULT;
995 				if (where == BORDER)
996 					key = KEYC_MOUSEDRAG2_BORDER;
997 				break;
998 			case MOUSE_BUTTON_3:
999 				if (where == PANE)
1000 					key = KEYC_MOUSEDRAG3_PANE;
1001 				if (where == STATUS)
1002 					key = KEYC_MOUSEDRAG3_STATUS;
1003 				if (where == STATUS_LEFT)
1004 					key = KEYC_MOUSEDRAG3_STATUS_LEFT;
1005 				if (where == STATUS_RIGHT)
1006 					key = KEYC_MOUSEDRAG3_STATUS_RIGHT;
1007 				if (where == STATUS_DEFAULT)
1008 					key = KEYC_MOUSEDRAG3_STATUS_DEFAULT;
1009 				if (where == BORDER)
1010 					key = KEYC_MOUSEDRAG3_BORDER;
1011 				break;
1012 			case MOUSE_BUTTON_6:
1013 				if (where == PANE)
1014 					key = KEYC_MOUSEDRAG6_PANE;
1015 				if (where == STATUS)
1016 					key = KEYC_MOUSEDRAG6_STATUS;
1017 				if (where == STATUS_LEFT)
1018 					key = KEYC_MOUSEDRAG6_STATUS_LEFT;
1019 				if (where == STATUS_RIGHT)
1020 					key = KEYC_MOUSEDRAG6_STATUS_RIGHT;
1021 				if (where == STATUS_DEFAULT)
1022 					key = KEYC_MOUSEDRAG6_STATUS_DEFAULT;
1023 				if (where == BORDER)
1024 					key = KEYC_MOUSEDRAG6_BORDER;
1025 				break;
1026 			case MOUSE_BUTTON_7:
1027 				if (where == PANE)
1028 					key = KEYC_MOUSEDRAG7_PANE;
1029 				if (where == STATUS)
1030 					key = KEYC_MOUSEDRAG7_STATUS;
1031 				if (where == STATUS_LEFT)
1032 					key = KEYC_MOUSEDRAG7_STATUS_LEFT;
1033 				if (where == STATUS_RIGHT)
1034 					key = KEYC_MOUSEDRAG7_STATUS_RIGHT;
1035 				if (where == STATUS_DEFAULT)
1036 					key = KEYC_MOUSEDRAG7_STATUS_DEFAULT;
1037 				if (where == BORDER)
1038 					key = KEYC_MOUSEDRAG7_BORDER;
1039 				break;
1040 			case MOUSE_BUTTON_8:
1041 				if (where == PANE)
1042 					key = KEYC_MOUSEDRAG8_PANE;
1043 				if (where == STATUS)
1044 					key = KEYC_MOUSEDRAG8_STATUS;
1045 				if (where == STATUS_LEFT)
1046 					key = KEYC_MOUSEDRAG8_STATUS_LEFT;
1047 				if (where == STATUS_RIGHT)
1048 					key = KEYC_MOUSEDRAG8_STATUS_RIGHT;
1049 				if (where == STATUS_DEFAULT)
1050 					key = KEYC_MOUSEDRAG8_STATUS_DEFAULT;
1051 				if (where == BORDER)
1052 					key = KEYC_MOUSEDRAG8_BORDER;
1053 				break;
1054 			case MOUSE_BUTTON_9:
1055 				if (where == PANE)
1056 					key = KEYC_MOUSEDRAG9_PANE;
1057 				if (where == STATUS)
1058 					key = KEYC_MOUSEDRAG9_STATUS;
1059 				if (where == STATUS_LEFT)
1060 					key = KEYC_MOUSEDRAG9_STATUS_LEFT;
1061 				if (where == STATUS_RIGHT)
1062 					key = KEYC_MOUSEDRAG9_STATUS_RIGHT;
1063 				if (where == STATUS_DEFAULT)
1064 					key = KEYC_MOUSEDRAG9_STATUS_DEFAULT;
1065 				if (where == BORDER)
1066 					key = KEYC_MOUSEDRAG9_BORDER;
1067 				break;
1068 			case MOUSE_BUTTON_10:
1069 				if (where == PANE)
1070 					key = KEYC_MOUSEDRAG10_PANE;
1071 				if (where == STATUS)
1072 					key = KEYC_MOUSEDRAG10_STATUS;
1073 				if (where == STATUS_LEFT)
1074 					key = KEYC_MOUSEDRAG10_STATUS_LEFT;
1075 				if (where == STATUS_RIGHT)
1076 					key = KEYC_MOUSEDRAG10_STATUS_RIGHT;
1077 				if (where == STATUS_DEFAULT)
1078 					key = KEYC_MOUSEDRAG10_STATUS_DEFAULT;
1079 				if (where == BORDER)
1080 					key = KEYC_MOUSEDRAG10_BORDER;
1081 				break;
1082 			case MOUSE_BUTTON_11:
1083 				if (where == PANE)
1084 					key = KEYC_MOUSEDRAG11_PANE;
1085 				if (where == STATUS)
1086 					key = KEYC_MOUSEDRAG11_STATUS;
1087 				if (where == STATUS_LEFT)
1088 					key = KEYC_MOUSEDRAG11_STATUS_LEFT;
1089 				if (where == STATUS_RIGHT)
1090 					key = KEYC_MOUSEDRAG11_STATUS_RIGHT;
1091 				if (where == STATUS_DEFAULT)
1092 					key = KEYC_MOUSEDRAG11_STATUS_DEFAULT;
1093 				if (where == BORDER)
1094 					key = KEYC_MOUSEDRAG11_BORDER;
1095 				break;
1096 			}
1097 		}
1098 
1099 		/*
1100 		 * Begin a drag by setting the flag to a non-zero value that
1101 		 * corresponds to the mouse button in use.
1102 		 */
1103 		c->tty.mouse_drag_flag = MOUSE_BUTTONS(b) + 1;
1104 		break;
1105 	case WHEEL:
1106 		if (MOUSE_BUTTONS(b) == MOUSE_WHEEL_UP) {
1107 			if (where == PANE)
1108 				key = KEYC_WHEELUP_PANE;
1109 			if (where == STATUS)
1110 				key = KEYC_WHEELUP_STATUS;
1111 			if (where == STATUS_LEFT)
1112 				key = KEYC_WHEELUP_STATUS_LEFT;
1113 			if (where == STATUS_RIGHT)
1114 				key = KEYC_WHEELUP_STATUS_RIGHT;
1115 			if (where == STATUS_DEFAULT)
1116 				key = KEYC_WHEELUP_STATUS_DEFAULT;
1117 			if (where == BORDER)
1118 				key = KEYC_WHEELUP_BORDER;
1119 		} else {
1120 			if (where == PANE)
1121 				key = KEYC_WHEELDOWN_PANE;
1122 			if (where == STATUS)
1123 				key = KEYC_WHEELDOWN_STATUS;
1124 			if (where == STATUS_LEFT)
1125 				key = KEYC_WHEELDOWN_STATUS_LEFT;
1126 			if (where == STATUS_RIGHT)
1127 				key = KEYC_WHEELDOWN_STATUS_RIGHT;
1128 			if (where == STATUS_DEFAULT)
1129 				key = KEYC_WHEELDOWN_STATUS_DEFAULT;
1130 			if (where == BORDER)
1131 				key = KEYC_WHEELDOWN_BORDER;
1132 		}
1133 		break;
1134 	case UP:
1135 		switch (MOUSE_BUTTONS(b)) {
1136 		case MOUSE_BUTTON_1:
1137 			if (where == PANE)
1138 				key = KEYC_MOUSEUP1_PANE;
1139 			if (where == STATUS)
1140 				key = KEYC_MOUSEUP1_STATUS;
1141 			if (where == STATUS_LEFT)
1142 				key = KEYC_MOUSEUP1_STATUS_LEFT;
1143 			if (where == STATUS_RIGHT)
1144 				key = KEYC_MOUSEUP1_STATUS_RIGHT;
1145 			if (where == STATUS_DEFAULT)
1146 				key = KEYC_MOUSEUP1_STATUS_DEFAULT;
1147 			if (where == BORDER)
1148 				key = KEYC_MOUSEUP1_BORDER;
1149 			break;
1150 		case MOUSE_BUTTON_2:
1151 			if (where == PANE)
1152 				key = KEYC_MOUSEUP2_PANE;
1153 			if (where == STATUS)
1154 				key = KEYC_MOUSEUP2_STATUS;
1155 			if (where == STATUS_LEFT)
1156 				key = KEYC_MOUSEUP2_STATUS_LEFT;
1157 			if (where == STATUS_RIGHT)
1158 				key = KEYC_MOUSEUP2_STATUS_RIGHT;
1159 			if (where == STATUS_DEFAULT)
1160 				key = KEYC_MOUSEUP2_STATUS_DEFAULT;
1161 			if (where == BORDER)
1162 				key = KEYC_MOUSEUP2_BORDER;
1163 			break;
1164 		case MOUSE_BUTTON_3:
1165 			if (where == PANE)
1166 				key = KEYC_MOUSEUP3_PANE;
1167 			if (where == STATUS)
1168 				key = KEYC_MOUSEUP3_STATUS;
1169 			if (where == STATUS_LEFT)
1170 				key = KEYC_MOUSEUP3_STATUS_LEFT;
1171 			if (where == STATUS_RIGHT)
1172 				key = KEYC_MOUSEUP3_STATUS_RIGHT;
1173 			if (where == STATUS_DEFAULT)
1174 				key = KEYC_MOUSEUP3_STATUS_DEFAULT;
1175 			if (where == BORDER)
1176 				key = KEYC_MOUSEUP3_BORDER;
1177 			break;
1178 		case MOUSE_BUTTON_6:
1179 			if (where == PANE)
1180 				key = KEYC_MOUSEUP6_PANE;
1181 			if (where == STATUS)
1182 				key = KEYC_MOUSEUP6_STATUS;
1183 			if (where == STATUS_LEFT)
1184 				key = KEYC_MOUSEUP6_STATUS_LEFT;
1185 			if (where == STATUS_RIGHT)
1186 				key = KEYC_MOUSEUP6_STATUS_RIGHT;
1187 			if (where == STATUS_DEFAULT)
1188 				key = KEYC_MOUSEUP6_STATUS_DEFAULT;
1189 			if (where == BORDER)
1190 				key = KEYC_MOUSEUP6_BORDER;
1191 			break;
1192 		case MOUSE_BUTTON_7:
1193 			if (where == PANE)
1194 				key = KEYC_MOUSEUP7_PANE;
1195 			if (where == STATUS)
1196 				key = KEYC_MOUSEUP7_STATUS;
1197 			if (where == STATUS_LEFT)
1198 				key = KEYC_MOUSEUP7_STATUS_LEFT;
1199 			if (where == STATUS_RIGHT)
1200 				key = KEYC_MOUSEUP7_STATUS_RIGHT;
1201 			if (where == STATUS_DEFAULT)
1202 				key = KEYC_MOUSEUP7_STATUS_DEFAULT;
1203 			if (where == BORDER)
1204 				key = KEYC_MOUSEUP7_BORDER;
1205 			break;
1206 		case MOUSE_BUTTON_8:
1207 			if (where == PANE)
1208 				key = KEYC_MOUSEUP8_PANE;
1209 			if (where == STATUS)
1210 				key = KEYC_MOUSEUP8_STATUS;
1211 			if (where == STATUS_LEFT)
1212 				key = KEYC_MOUSEUP8_STATUS_LEFT;
1213 			if (where == STATUS_RIGHT)
1214 				key = KEYC_MOUSEUP8_STATUS_RIGHT;
1215 			if (where == STATUS_DEFAULT)
1216 				key = KEYC_MOUSEUP8_STATUS_DEFAULT;
1217 			if (where == BORDER)
1218 				key = KEYC_MOUSEUP8_BORDER;
1219 			break;
1220 		case MOUSE_BUTTON_9:
1221 			if (where == PANE)
1222 				key = KEYC_MOUSEUP9_PANE;
1223 			if (where == STATUS)
1224 				key = KEYC_MOUSEUP9_STATUS;
1225 			if (where == STATUS_LEFT)
1226 				key = KEYC_MOUSEUP9_STATUS_LEFT;
1227 			if (where == STATUS_RIGHT)
1228 				key = KEYC_MOUSEUP9_STATUS_RIGHT;
1229 			if (where == STATUS_DEFAULT)
1230 				key = KEYC_MOUSEUP9_STATUS_DEFAULT;
1231 			if (where == BORDER)
1232 				key = KEYC_MOUSEUP9_BORDER;
1233 			break;
1234 		case MOUSE_BUTTON_10:
1235 			if (where == PANE)
1236 				key = KEYC_MOUSEUP1_PANE;
1237 			if (where == STATUS)
1238 				key = KEYC_MOUSEUP1_STATUS;
1239 			if (where == STATUS_LEFT)
1240 				key = KEYC_MOUSEUP1_STATUS_LEFT;
1241 			if (where == STATUS_RIGHT)
1242 				key = KEYC_MOUSEUP1_STATUS_RIGHT;
1243 			if (where == STATUS_DEFAULT)
1244 				key = KEYC_MOUSEUP1_STATUS_DEFAULT;
1245 			if (where == BORDER)
1246 				key = KEYC_MOUSEUP1_BORDER;
1247 			break;
1248 		case MOUSE_BUTTON_11:
1249 			if (where == PANE)
1250 				key = KEYC_MOUSEUP11_PANE;
1251 			if (where == STATUS)
1252 				key = KEYC_MOUSEUP11_STATUS;
1253 			if (where == STATUS_LEFT)
1254 				key = KEYC_MOUSEUP11_STATUS_LEFT;
1255 			if (where == STATUS_RIGHT)
1256 				key = KEYC_MOUSEUP11_STATUS_RIGHT;
1257 			if (where == STATUS_DEFAULT)
1258 				key = KEYC_MOUSEUP11_STATUS_DEFAULT;
1259 			if (where == BORDER)
1260 				key = KEYC_MOUSEUP11_BORDER;
1261 			break;
1262 		}
1263 		break;
1264 	case DOWN:
1265 		switch (MOUSE_BUTTONS(b)) {
1266 		case MOUSE_BUTTON_1:
1267 			if (where == PANE)
1268 				key = KEYC_MOUSEDOWN1_PANE;
1269 			if (where == STATUS)
1270 				key = KEYC_MOUSEDOWN1_STATUS;
1271 			if (where == STATUS_LEFT)
1272 				key = KEYC_MOUSEDOWN1_STATUS_LEFT;
1273 			if (where == STATUS_RIGHT)
1274 				key = KEYC_MOUSEDOWN1_STATUS_RIGHT;
1275 			if (where == STATUS_DEFAULT)
1276 				key = KEYC_MOUSEDOWN1_STATUS_DEFAULT;
1277 			if (where == BORDER)
1278 				key = KEYC_MOUSEDOWN1_BORDER;
1279 			break;
1280 		case MOUSE_BUTTON_2:
1281 			if (where == PANE)
1282 				key = KEYC_MOUSEDOWN2_PANE;
1283 			if (where == STATUS)
1284 				key = KEYC_MOUSEDOWN2_STATUS;
1285 			if (where == STATUS_LEFT)
1286 				key = KEYC_MOUSEDOWN2_STATUS_LEFT;
1287 			if (where == STATUS_RIGHT)
1288 				key = KEYC_MOUSEDOWN2_STATUS_RIGHT;
1289 			if (where == STATUS_DEFAULT)
1290 				key = KEYC_MOUSEDOWN2_STATUS_DEFAULT;
1291 			if (where == BORDER)
1292 				key = KEYC_MOUSEDOWN2_BORDER;
1293 			break;
1294 		case MOUSE_BUTTON_3:
1295 			if (where == PANE)
1296 				key = KEYC_MOUSEDOWN3_PANE;
1297 			if (where == STATUS)
1298 				key = KEYC_MOUSEDOWN3_STATUS;
1299 			if (where == STATUS_LEFT)
1300 				key = KEYC_MOUSEDOWN3_STATUS_LEFT;
1301 			if (where == STATUS_RIGHT)
1302 				key = KEYC_MOUSEDOWN3_STATUS_RIGHT;
1303 			if (where == STATUS_DEFAULT)
1304 				key = KEYC_MOUSEDOWN3_STATUS_DEFAULT;
1305 			if (where == BORDER)
1306 				key = KEYC_MOUSEDOWN3_BORDER;
1307 			break;
1308 		case MOUSE_BUTTON_6:
1309 			if (where == PANE)
1310 				key = KEYC_MOUSEDOWN6_PANE;
1311 			if (where == STATUS)
1312 				key = KEYC_MOUSEDOWN6_STATUS;
1313 			if (where == STATUS_LEFT)
1314 				key = KEYC_MOUSEDOWN6_STATUS_LEFT;
1315 			if (where == STATUS_RIGHT)
1316 				key = KEYC_MOUSEDOWN6_STATUS_RIGHT;
1317 			if (where == STATUS_DEFAULT)
1318 				key = KEYC_MOUSEDOWN6_STATUS_DEFAULT;
1319 			if (where == BORDER)
1320 				key = KEYC_MOUSEDOWN6_BORDER;
1321 			break;
1322 		case MOUSE_BUTTON_7:
1323 			if (where == PANE)
1324 				key = KEYC_MOUSEDOWN7_PANE;
1325 			if (where == STATUS)
1326 				key = KEYC_MOUSEDOWN7_STATUS;
1327 			if (where == STATUS_LEFT)
1328 				key = KEYC_MOUSEDOWN7_STATUS_LEFT;
1329 			if (where == STATUS_RIGHT)
1330 				key = KEYC_MOUSEDOWN7_STATUS_RIGHT;
1331 			if (where == STATUS_DEFAULT)
1332 				key = KEYC_MOUSEDOWN7_STATUS_DEFAULT;
1333 			if (where == BORDER)
1334 				key = KEYC_MOUSEDOWN7_BORDER;
1335 			break;
1336 		case MOUSE_BUTTON_8:
1337 			if (where == PANE)
1338 				key = KEYC_MOUSEDOWN8_PANE;
1339 			if (where == STATUS)
1340 				key = KEYC_MOUSEDOWN8_STATUS;
1341 			if (where == STATUS_LEFT)
1342 				key = KEYC_MOUSEDOWN8_STATUS_LEFT;
1343 			if (where == STATUS_RIGHT)
1344 				key = KEYC_MOUSEDOWN8_STATUS_RIGHT;
1345 			if (where == STATUS_DEFAULT)
1346 				key = KEYC_MOUSEDOWN8_STATUS_DEFAULT;
1347 			if (where == BORDER)
1348 				key = KEYC_MOUSEDOWN8_BORDER;
1349 			break;
1350 		case MOUSE_BUTTON_9:
1351 			if (where == PANE)
1352 				key = KEYC_MOUSEDOWN9_PANE;
1353 			if (where == STATUS)
1354 				key = KEYC_MOUSEDOWN9_STATUS;
1355 			if (where == STATUS_LEFT)
1356 				key = KEYC_MOUSEDOWN9_STATUS_LEFT;
1357 			if (where == STATUS_RIGHT)
1358 				key = KEYC_MOUSEDOWN9_STATUS_RIGHT;
1359 			if (where == STATUS_DEFAULT)
1360 				key = KEYC_MOUSEDOWN9_STATUS_DEFAULT;
1361 			if (where == BORDER)
1362 				key = KEYC_MOUSEDOWN9_BORDER;
1363 			break;
1364 		case MOUSE_BUTTON_10:
1365 			if (where == PANE)
1366 				key = KEYC_MOUSEDOWN10_PANE;
1367 			if (where == STATUS)
1368 				key = KEYC_MOUSEDOWN10_STATUS;
1369 			if (where == STATUS_LEFT)
1370 				key = KEYC_MOUSEDOWN10_STATUS_LEFT;
1371 			if (where == STATUS_RIGHT)
1372 				key = KEYC_MOUSEDOWN10_STATUS_RIGHT;
1373 			if (where == STATUS_DEFAULT)
1374 				key = KEYC_MOUSEDOWN10_STATUS_DEFAULT;
1375 			if (where == BORDER)
1376 				key = KEYC_MOUSEDOWN10_BORDER;
1377 			break;
1378 		case MOUSE_BUTTON_11:
1379 			if (where == PANE)
1380 				key = KEYC_MOUSEDOWN11_PANE;
1381 			if (where == STATUS)
1382 				key = KEYC_MOUSEDOWN11_STATUS;
1383 			if (where == STATUS_LEFT)
1384 				key = KEYC_MOUSEDOWN11_STATUS_LEFT;
1385 			if (where == STATUS_RIGHT)
1386 				key = KEYC_MOUSEDOWN11_STATUS_RIGHT;
1387 			if (where == STATUS_DEFAULT)
1388 				key = KEYC_MOUSEDOWN11_STATUS_DEFAULT;
1389 			if (where == BORDER)
1390 				key = KEYC_MOUSEDOWN11_BORDER;
1391 			break;
1392 		}
1393 		break;
1394 	case SECOND:
1395 		switch (MOUSE_BUTTONS(b)) {
1396 		case MOUSE_BUTTON_1:
1397 			if (where == PANE)
1398 				key = KEYC_SECONDCLICK1_PANE;
1399 			if (where == STATUS)
1400 				key = KEYC_SECONDCLICK1_STATUS;
1401 			if (where == STATUS_LEFT)
1402 				key = KEYC_SECONDCLICK1_STATUS_LEFT;
1403 			if (where == STATUS_RIGHT)
1404 				key = KEYC_SECONDCLICK1_STATUS_RIGHT;
1405 			if (where == STATUS_DEFAULT)
1406 				key = KEYC_SECONDCLICK1_STATUS_DEFAULT;
1407 			if (where == BORDER)
1408 				key = KEYC_SECONDCLICK1_BORDER;
1409 			break;
1410 		case MOUSE_BUTTON_2:
1411 			if (where == PANE)
1412 				key = KEYC_SECONDCLICK2_PANE;
1413 			if (where == STATUS)
1414 				key = KEYC_SECONDCLICK2_STATUS;
1415 			if (where == STATUS_LEFT)
1416 				key = KEYC_SECONDCLICK2_STATUS_LEFT;
1417 			if (where == STATUS_RIGHT)
1418 				key = KEYC_SECONDCLICK2_STATUS_RIGHT;
1419 			if (where == STATUS_DEFAULT)
1420 				key = KEYC_SECONDCLICK2_STATUS_DEFAULT;
1421 			if (where == BORDER)
1422 				key = KEYC_SECONDCLICK2_BORDER;
1423 			break;
1424 		case MOUSE_BUTTON_3:
1425 			if (where == PANE)
1426 				key = KEYC_SECONDCLICK3_PANE;
1427 			if (where == STATUS)
1428 				key = KEYC_SECONDCLICK3_STATUS;
1429 			if (where == STATUS_LEFT)
1430 				key = KEYC_SECONDCLICK3_STATUS_LEFT;
1431 			if (where == STATUS_RIGHT)
1432 				key = KEYC_SECONDCLICK3_STATUS_RIGHT;
1433 			if (where == STATUS_DEFAULT)
1434 				key = KEYC_SECONDCLICK3_STATUS_DEFAULT;
1435 			if (where == BORDER)
1436 				key = KEYC_SECONDCLICK3_BORDER;
1437 			break;
1438 		case MOUSE_BUTTON_6:
1439 			if (where == PANE)
1440 				key = KEYC_SECONDCLICK6_PANE;
1441 			if (where == STATUS)
1442 				key = KEYC_SECONDCLICK6_STATUS;
1443 			if (where == STATUS_LEFT)
1444 				key = KEYC_SECONDCLICK6_STATUS_LEFT;
1445 			if (where == STATUS_RIGHT)
1446 				key = KEYC_SECONDCLICK6_STATUS_RIGHT;
1447 			if (where == STATUS_DEFAULT)
1448 				key = KEYC_SECONDCLICK6_STATUS_DEFAULT;
1449 			if (where == BORDER)
1450 				key = KEYC_SECONDCLICK6_BORDER;
1451 			break;
1452 		case MOUSE_BUTTON_7:
1453 			if (where == PANE)
1454 				key = KEYC_SECONDCLICK7_PANE;
1455 			if (where == STATUS)
1456 				key = KEYC_SECONDCLICK7_STATUS;
1457 			if (where == STATUS_LEFT)
1458 				key = KEYC_SECONDCLICK7_STATUS_LEFT;
1459 			if (where == STATUS_RIGHT)
1460 				key = KEYC_SECONDCLICK7_STATUS_RIGHT;
1461 			if (where == STATUS_DEFAULT)
1462 				key = KEYC_SECONDCLICK7_STATUS_DEFAULT;
1463 			if (where == BORDER)
1464 				key = KEYC_SECONDCLICK7_BORDER;
1465 			break;
1466 		case MOUSE_BUTTON_8:
1467 			if (where == PANE)
1468 				key = KEYC_SECONDCLICK8_PANE;
1469 			if (where == STATUS)
1470 				key = KEYC_SECONDCLICK8_STATUS;
1471 			if (where == STATUS_LEFT)
1472 				key = KEYC_SECONDCLICK8_STATUS_LEFT;
1473 			if (where == STATUS_RIGHT)
1474 				key = KEYC_SECONDCLICK8_STATUS_RIGHT;
1475 			if (where == STATUS_DEFAULT)
1476 				key = KEYC_SECONDCLICK8_STATUS_DEFAULT;
1477 			if (where == BORDER)
1478 				key = KEYC_SECONDCLICK8_BORDER;
1479 			break;
1480 		case MOUSE_BUTTON_9:
1481 			if (where == PANE)
1482 				key = KEYC_SECONDCLICK9_PANE;
1483 			if (where == STATUS)
1484 				key = KEYC_SECONDCLICK9_STATUS;
1485 			if (where == STATUS_LEFT)
1486 				key = KEYC_SECONDCLICK9_STATUS_LEFT;
1487 			if (where == STATUS_RIGHT)
1488 				key = KEYC_SECONDCLICK9_STATUS_RIGHT;
1489 			if (where == STATUS_DEFAULT)
1490 				key = KEYC_SECONDCLICK9_STATUS_DEFAULT;
1491 			if (where == BORDER)
1492 				key = KEYC_SECONDCLICK9_BORDER;
1493 			break;
1494 		case MOUSE_BUTTON_10:
1495 			if (where == PANE)
1496 				key = KEYC_SECONDCLICK10_PANE;
1497 			if (where == STATUS)
1498 				key = KEYC_SECONDCLICK10_STATUS;
1499 			if (where == STATUS_LEFT)
1500 				key = KEYC_SECONDCLICK10_STATUS_LEFT;
1501 			if (where == STATUS_RIGHT)
1502 				key = KEYC_SECONDCLICK10_STATUS_RIGHT;
1503 			if (where == STATUS_DEFAULT)
1504 				key = KEYC_SECONDCLICK10_STATUS_DEFAULT;
1505 			if (where == BORDER)
1506 				key = KEYC_SECONDCLICK10_BORDER;
1507 			break;
1508 		case MOUSE_BUTTON_11:
1509 			if (where == PANE)
1510 				key = KEYC_SECONDCLICK11_PANE;
1511 			if (where == STATUS)
1512 				key = KEYC_SECONDCLICK11_STATUS;
1513 			if (where == STATUS_LEFT)
1514 				key = KEYC_SECONDCLICK11_STATUS_LEFT;
1515 			if (where == STATUS_RIGHT)
1516 				key = KEYC_SECONDCLICK11_STATUS_RIGHT;
1517 			if (where == STATUS_DEFAULT)
1518 				key = KEYC_SECONDCLICK11_STATUS_DEFAULT;
1519 			if (where == BORDER)
1520 				key = KEYC_SECONDCLICK11_BORDER;
1521 			break;
1522 		}
1523 		break;
1524 	case DOUBLE:
1525 		switch (MOUSE_BUTTONS(b)) {
1526 		case MOUSE_BUTTON_1:
1527 			if (where == PANE)
1528 				key = KEYC_DOUBLECLICK1_PANE;
1529 			if (where == STATUS)
1530 				key = KEYC_DOUBLECLICK1_STATUS;
1531 			if (where == STATUS_LEFT)
1532 				key = KEYC_DOUBLECLICK1_STATUS_LEFT;
1533 			if (where == STATUS_RIGHT)
1534 				key = KEYC_DOUBLECLICK1_STATUS_RIGHT;
1535 			if (where == STATUS_DEFAULT)
1536 				key = KEYC_DOUBLECLICK1_STATUS_DEFAULT;
1537 			if (where == BORDER)
1538 				key = KEYC_DOUBLECLICK1_BORDER;
1539 			break;
1540 		case MOUSE_BUTTON_2:
1541 			if (where == PANE)
1542 				key = KEYC_DOUBLECLICK2_PANE;
1543 			if (where == STATUS)
1544 				key = KEYC_DOUBLECLICK2_STATUS;
1545 			if (where == STATUS_LEFT)
1546 				key = KEYC_DOUBLECLICK2_STATUS_LEFT;
1547 			if (where == STATUS_RIGHT)
1548 				key = KEYC_DOUBLECLICK2_STATUS_RIGHT;
1549 			if (where == STATUS_DEFAULT)
1550 				key = KEYC_DOUBLECLICK2_STATUS_DEFAULT;
1551 			if (where == BORDER)
1552 				key = KEYC_DOUBLECLICK2_BORDER;
1553 			break;
1554 		case MOUSE_BUTTON_3:
1555 			if (where == PANE)
1556 				key = KEYC_DOUBLECLICK3_PANE;
1557 			if (where == STATUS)
1558 				key = KEYC_DOUBLECLICK3_STATUS;
1559 			if (where == STATUS_LEFT)
1560 				key = KEYC_DOUBLECLICK3_STATUS_LEFT;
1561 			if (where == STATUS_RIGHT)
1562 				key = KEYC_DOUBLECLICK3_STATUS_RIGHT;
1563 			if (where == STATUS_DEFAULT)
1564 				key = KEYC_DOUBLECLICK3_STATUS_DEFAULT;
1565 			if (where == BORDER)
1566 				key = KEYC_DOUBLECLICK3_BORDER;
1567 			break;
1568 		case MOUSE_BUTTON_6:
1569 			if (where == PANE)
1570 				key = KEYC_DOUBLECLICK6_PANE;
1571 			if (where == STATUS)
1572 				key = KEYC_DOUBLECLICK6_STATUS;
1573 			if (where == STATUS_LEFT)
1574 				key = KEYC_DOUBLECLICK6_STATUS_LEFT;
1575 			if (where == STATUS_RIGHT)
1576 				key = KEYC_DOUBLECLICK6_STATUS_RIGHT;
1577 			if (where == STATUS_DEFAULT)
1578 				key = KEYC_DOUBLECLICK6_STATUS_DEFAULT;
1579 			if (where == BORDER)
1580 				key = KEYC_DOUBLECLICK6_BORDER;
1581 			break;
1582 		case MOUSE_BUTTON_7:
1583 			if (where == PANE)
1584 				key = KEYC_DOUBLECLICK7_PANE;
1585 			if (where == STATUS)
1586 				key = KEYC_DOUBLECLICK7_STATUS;
1587 			if (where == STATUS_LEFT)
1588 				key = KEYC_DOUBLECLICK7_STATUS_LEFT;
1589 			if (where == STATUS_RIGHT)
1590 				key = KEYC_DOUBLECLICK7_STATUS_RIGHT;
1591 			if (where == STATUS_DEFAULT)
1592 				key = KEYC_DOUBLECLICK7_STATUS_DEFAULT;
1593 			if (where == BORDER)
1594 				key = KEYC_DOUBLECLICK7_BORDER;
1595 			break;
1596 		case MOUSE_BUTTON_8:
1597 			if (where == PANE)
1598 				key = KEYC_DOUBLECLICK8_PANE;
1599 			if (where == STATUS)
1600 				key = KEYC_DOUBLECLICK8_STATUS;
1601 			if (where == STATUS_LEFT)
1602 				key = KEYC_DOUBLECLICK8_STATUS_LEFT;
1603 			if (where == STATUS_RIGHT)
1604 				key = KEYC_DOUBLECLICK8_STATUS_RIGHT;
1605 			if (where == STATUS_DEFAULT)
1606 				key = KEYC_DOUBLECLICK8_STATUS_DEFAULT;
1607 			if (where == BORDER)
1608 				key = KEYC_DOUBLECLICK8_BORDER;
1609 			break;
1610 		case MOUSE_BUTTON_9:
1611 			if (where == PANE)
1612 				key = KEYC_DOUBLECLICK9_PANE;
1613 			if (where == STATUS)
1614 				key = KEYC_DOUBLECLICK9_STATUS;
1615 			if (where == STATUS_LEFT)
1616 				key = KEYC_DOUBLECLICK9_STATUS_LEFT;
1617 			if (where == STATUS_RIGHT)
1618 				key = KEYC_DOUBLECLICK9_STATUS_RIGHT;
1619 			if (where == STATUS_DEFAULT)
1620 				key = KEYC_DOUBLECLICK9_STATUS_DEFAULT;
1621 			if (where == BORDER)
1622 				key = KEYC_DOUBLECLICK9_BORDER;
1623 			break;
1624 		case MOUSE_BUTTON_10:
1625 			if (where == PANE)
1626 				key = KEYC_DOUBLECLICK10_PANE;
1627 			if (where == STATUS)
1628 				key = KEYC_DOUBLECLICK10_STATUS;
1629 			if (where == STATUS_LEFT)
1630 				key = KEYC_DOUBLECLICK10_STATUS_LEFT;
1631 			if (where == STATUS_RIGHT)
1632 				key = KEYC_DOUBLECLICK10_STATUS_RIGHT;
1633 			if (where == STATUS_DEFAULT)
1634 				key = KEYC_DOUBLECLICK10_STATUS_DEFAULT;
1635 			if (where == BORDER)
1636 				key = KEYC_DOUBLECLICK10_BORDER;
1637 			break;
1638 		case MOUSE_BUTTON_11:
1639 			if (where == PANE)
1640 				key = KEYC_DOUBLECLICK11_PANE;
1641 			if (where == STATUS)
1642 				key = KEYC_DOUBLECLICK11_STATUS;
1643 			if (where == STATUS_LEFT)
1644 				key = KEYC_DOUBLECLICK11_STATUS_LEFT;
1645 			if (where == STATUS_RIGHT)
1646 				key = KEYC_DOUBLECLICK11_STATUS_RIGHT;
1647 			if (where == STATUS_DEFAULT)
1648 				key = KEYC_DOUBLECLICK11_STATUS_DEFAULT;
1649 			if (where == BORDER)
1650 				key = KEYC_DOUBLECLICK11_BORDER;
1651 			break;
1652 		}
1653 		break;
1654 	case TRIPLE:
1655 		switch (MOUSE_BUTTONS(b)) {
1656 		case MOUSE_BUTTON_1:
1657 			if (where == PANE)
1658 				key = KEYC_TRIPLECLICK1_PANE;
1659 			if (where == STATUS)
1660 				key = KEYC_TRIPLECLICK1_STATUS;
1661 			if (where == STATUS_LEFT)
1662 				key = KEYC_TRIPLECLICK1_STATUS_LEFT;
1663 			if (where == STATUS_RIGHT)
1664 				key = KEYC_TRIPLECLICK1_STATUS_RIGHT;
1665 			if (where == STATUS_DEFAULT)
1666 				key = KEYC_TRIPLECLICK1_STATUS_DEFAULT;
1667 			if (where == BORDER)
1668 				key = KEYC_TRIPLECLICK1_BORDER;
1669 			break;
1670 		case MOUSE_BUTTON_2:
1671 			if (where == PANE)
1672 				key = KEYC_TRIPLECLICK2_PANE;
1673 			if (where == STATUS)
1674 				key = KEYC_TRIPLECLICK2_STATUS;
1675 			if (where == STATUS_LEFT)
1676 				key = KEYC_TRIPLECLICK2_STATUS_LEFT;
1677 			if (where == STATUS_RIGHT)
1678 				key = KEYC_TRIPLECLICK2_STATUS_RIGHT;
1679 			if (where == STATUS_DEFAULT)
1680 				key = KEYC_TRIPLECLICK2_STATUS_DEFAULT;
1681 			if (where == BORDER)
1682 				key = KEYC_TRIPLECLICK2_BORDER;
1683 			break;
1684 		case MOUSE_BUTTON_3:
1685 			if (where == PANE)
1686 				key = KEYC_TRIPLECLICK3_PANE;
1687 			if (where == STATUS)
1688 				key = KEYC_TRIPLECLICK3_STATUS;
1689 			if (where == STATUS_LEFT)
1690 				key = KEYC_TRIPLECLICK3_STATUS_LEFT;
1691 			if (where == STATUS_RIGHT)
1692 				key = KEYC_TRIPLECLICK3_STATUS_RIGHT;
1693 			if (where == STATUS_DEFAULT)
1694 				key = KEYC_TRIPLECLICK3_STATUS_DEFAULT;
1695 			if (where == BORDER)
1696 				key = KEYC_TRIPLECLICK3_BORDER;
1697 			break;
1698 		case MOUSE_BUTTON_6:
1699 			if (where == PANE)
1700 				key = KEYC_TRIPLECLICK6_PANE;
1701 			if (where == STATUS)
1702 				key = KEYC_TRIPLECLICK6_STATUS;
1703 			if (where == STATUS_LEFT)
1704 				key = KEYC_TRIPLECLICK6_STATUS_LEFT;
1705 			if (where == STATUS_RIGHT)
1706 				key = KEYC_TRIPLECLICK6_STATUS_RIGHT;
1707 			if (where == STATUS_DEFAULT)
1708 				key = KEYC_TRIPLECLICK6_STATUS_DEFAULT;
1709 			if (where == BORDER)
1710 				key = KEYC_TRIPLECLICK6_BORDER;
1711 			break;
1712 		case MOUSE_BUTTON_7:
1713 			if (where == PANE)
1714 				key = KEYC_TRIPLECLICK7_PANE;
1715 			if (where == STATUS)
1716 				key = KEYC_TRIPLECLICK7_STATUS;
1717 			if (where == STATUS_LEFT)
1718 				key = KEYC_TRIPLECLICK7_STATUS_LEFT;
1719 			if (where == STATUS_RIGHT)
1720 				key = KEYC_TRIPLECLICK7_STATUS_RIGHT;
1721 			if (where == STATUS_DEFAULT)
1722 				key = KEYC_TRIPLECLICK7_STATUS_DEFAULT;
1723 			if (where == BORDER)
1724 				key = KEYC_TRIPLECLICK7_BORDER;
1725 			break;
1726 		case MOUSE_BUTTON_8:
1727 			if (where == PANE)
1728 				key = KEYC_TRIPLECLICK8_PANE;
1729 			if (where == STATUS)
1730 				key = KEYC_TRIPLECLICK8_STATUS;
1731 			if (where == STATUS_LEFT)
1732 				key = KEYC_TRIPLECLICK8_STATUS_LEFT;
1733 			if (where == STATUS_RIGHT)
1734 				key = KEYC_TRIPLECLICK8_STATUS_RIGHT;
1735 			if (where == STATUS_DEFAULT)
1736 				key = KEYC_TRIPLECLICK8_STATUS_DEFAULT;
1737 			if (where == BORDER)
1738 				key = KEYC_TRIPLECLICK8_BORDER;
1739 			break;
1740 		case MOUSE_BUTTON_9:
1741 			if (where == PANE)
1742 				key = KEYC_TRIPLECLICK9_PANE;
1743 			if (where == STATUS)
1744 				key = KEYC_TRIPLECLICK9_STATUS;
1745 			if (where == STATUS_LEFT)
1746 				key = KEYC_TRIPLECLICK9_STATUS_LEFT;
1747 			if (where == STATUS_RIGHT)
1748 				key = KEYC_TRIPLECLICK9_STATUS_RIGHT;
1749 			if (where == STATUS_DEFAULT)
1750 				key = KEYC_TRIPLECLICK9_STATUS_DEFAULT;
1751 			if (where == BORDER)
1752 				key = KEYC_TRIPLECLICK9_BORDER;
1753 			break;
1754 		case MOUSE_BUTTON_10:
1755 			if (where == PANE)
1756 				key = KEYC_TRIPLECLICK10_PANE;
1757 			if (where == STATUS)
1758 				key = KEYC_TRIPLECLICK10_STATUS;
1759 			if (where == STATUS_LEFT)
1760 				key = KEYC_TRIPLECLICK10_STATUS_LEFT;
1761 			if (where == STATUS_RIGHT)
1762 				key = KEYC_TRIPLECLICK10_STATUS_RIGHT;
1763 			if (where == STATUS_DEFAULT)
1764 				key = KEYC_TRIPLECLICK10_STATUS_DEFAULT;
1765 			if (where == BORDER)
1766 				key = KEYC_TRIPLECLICK10_BORDER;
1767 			break;
1768 		case MOUSE_BUTTON_11:
1769 			if (where == PANE)
1770 				key = KEYC_TRIPLECLICK11_PANE;
1771 			if (where == STATUS)
1772 				key = KEYC_TRIPLECLICK11_STATUS;
1773 			if (where == STATUS_LEFT)
1774 				key = KEYC_TRIPLECLICK11_STATUS_LEFT;
1775 			if (where == STATUS_RIGHT)
1776 				key = KEYC_TRIPLECLICK11_STATUS_RIGHT;
1777 			if (where == STATUS_DEFAULT)
1778 				key = KEYC_TRIPLECLICK11_STATUS_DEFAULT;
1779 			if (where == BORDER)
1780 				key = KEYC_TRIPLECLICK11_BORDER;
1781 			break;
1782 		}
1783 		break;
1784 	}
1785 	if (key == KEYC_UNKNOWN)
1786 		return (KEYC_UNKNOWN);
1787 
1788 out:
1789 	/* Apply modifiers if any. */
1790 	if (b & MOUSE_MASK_META)
1791 		key |= KEYC_META;
1792 	if (b & MOUSE_MASK_CTRL)
1793 		key |= KEYC_CTRL;
1794 	if (b & MOUSE_MASK_SHIFT)
1795 		key |= KEYC_SHIFT;
1796 
1797 	if (log_get_level() != 0)
1798 		log_debug("mouse key is %s", key_string_lookup_key (key, 1));
1799 	return (key);
1800 }
1801 
1802 /* Is this a bracket paste key? */
1803 static int
1804 server_client_is_bracket_pasting(struct client *c, key_code key)
1805 {
1806 	if (key == KEYC_PASTE_START) {
1807 		c->flags |= CLIENT_BRACKETPASTING;
1808 		log_debug("%s: bracket paste on", c->name);
1809 		return (1);
1810 	}
1811 
1812 	if (key == KEYC_PASTE_END) {
1813 		c->flags &= ~CLIENT_BRACKETPASTING;
1814 		log_debug("%s: bracket paste off", c->name);
1815 		return (1);
1816 	}
1817 
1818 	return !!(c->flags & CLIENT_BRACKETPASTING);
1819 }
1820 
1821 /* Is this fast enough to probably be a paste? */
1822 static int
1823 server_client_assume_paste(struct session *s)
1824 {
1825 	struct timeval	tv;
1826 	int		t;
1827 
1828 	if ((t = options_get_number(s->options, "assume-paste-time")) == 0)
1829 		return (0);
1830 
1831 	timersub(&s->activity_time, &s->last_activity_time, &tv);
1832 	if (tv.tv_sec == 0 && tv.tv_usec < t * 1000) {
1833 		log_debug("session %s pasting (flag %d)", s->name,
1834 		    !!(s->flags & SESSION_PASTING));
1835 		if (s->flags & SESSION_PASTING)
1836 			return (1);
1837 		s->flags |= SESSION_PASTING;
1838 		return (0);
1839 	}
1840 	log_debug("session %s not pasting", s->name);
1841 	s->flags &= ~SESSION_PASTING;
1842 	return (0);
1843 }
1844 
1845 /* Has the latest client changed? */
1846 static void
1847 server_client_update_latest(struct client *c)
1848 {
1849 	struct window	*w;
1850 
1851 	if (c->session == NULL)
1852 		return;
1853 	w = c->session->curw->window;
1854 
1855 	if (w->latest == c)
1856 		return;
1857 	w->latest = c;
1858 
1859 	if (options_get_number(w->options, "window-size") == WINDOW_SIZE_LATEST)
1860 		recalculate_size(w, 0);
1861 
1862 	notify_client("client-active", c);
1863 }
1864 
1865 /*
1866  * Handle data key input from client. This owns and can modify the key event it
1867  * is given and is responsible for freeing it.
1868  */
1869 static enum cmd_retval
1870 server_client_key_callback(struct cmdq_item *item, void *data)
1871 {
1872 	struct client			*c = cmdq_get_client(item);
1873 	struct key_event		*event = data;
1874 	key_code			 key = event->key;
1875 	struct mouse_event		*m = &event->m;
1876 	struct session			*s = c->session;
1877 	struct winlink			*wl;
1878 	struct window_pane		*wp;
1879 	struct window_mode_entry	*wme;
1880 	struct timeval			 tv;
1881 	struct key_table		*table, *first;
1882 	struct key_binding		*bd;
1883 	int				 xtimeout;
1884 	uint64_t			 flags, prefix_delay;
1885 	struct cmd_find_state		 fs;
1886 	key_code			 key0, prefix, prefix2;
1887 
1888 	/* Check the client is good to accept input. */
1889 	if (s == NULL || (c->flags & CLIENT_UNATTACHEDFLAGS))
1890 		goto out;
1891 	wl = s->curw;
1892 
1893 	/* Update the activity timer. */
1894 	if (gettimeofday(&c->activity_time, NULL) != 0)
1895 		fatal("gettimeofday failed");
1896 	session_update_activity(s, &c->activity_time);
1897 
1898 	/* Check for mouse keys. */
1899 	m->valid = 0;
1900 	if (key == KEYC_MOUSE || key == KEYC_DOUBLECLICK) {
1901 		if (c->flags & CLIENT_READONLY)
1902 			goto out;
1903 		key = server_client_check_mouse(c, event);
1904 		if (key == KEYC_UNKNOWN)
1905 			goto out;
1906 
1907 		m->valid = 1;
1908 		m->key = key;
1909 
1910 		/*
1911 		 * Mouse drag is in progress, so fire the callback (now that
1912 		 * the mouse event is valid).
1913 		 */
1914 		if ((key & KEYC_MASK_KEY) == KEYC_DRAGGING) {
1915 			c->tty.mouse_drag_update(c, m);
1916 			goto out;
1917 		}
1918 		event->key = key;
1919 	}
1920 
1921 	/* Find affected pane. */
1922 	if (!KEYC_IS_MOUSE(key) || cmd_find_from_mouse(&fs, m, 0) != 0)
1923 		cmd_find_from_client(&fs, c, 0);
1924 	wp = fs.wp;
1925 
1926 	/* Forward mouse keys if disabled. */
1927 	if (KEYC_IS_MOUSE(key) && !options_get_number(s->options, "mouse"))
1928 		goto forward_key;
1929 
1930 	/* Forward if bracket pasting. */
1931 	if (server_client_is_bracket_pasting(c, key))
1932 		goto forward_key;
1933 
1934 	/* Treat everything as a regular key when pasting is detected. */
1935 	if (!KEYC_IS_MOUSE(key) &&
1936 	    (~key & KEYC_SENT) &&
1937 	    server_client_assume_paste(s))
1938 		goto forward_key;
1939 
1940 	/*
1941 	 * Work out the current key table. If the pane is in a mode, use
1942 	 * the mode table instead of the default key table.
1943 	 */
1944 	if (server_client_is_default_key_table(c, c->keytable) &&
1945 	    wp != NULL &&
1946 	    (wme = TAILQ_FIRST(&wp->modes)) != NULL &&
1947 	    wme->mode->key_table != NULL)
1948 		table = key_bindings_get_table(wme->mode->key_table(wme), 1);
1949 	else
1950 		table = c->keytable;
1951 	first = table;
1952 
1953 table_changed:
1954 	/*
1955 	 * The prefix always takes precedence and forces a switch to the prefix
1956 	 * table, unless we are already there.
1957 	 */
1958 	prefix = (key_code)options_get_number(s->options, "prefix");
1959 	prefix2 = (key_code)options_get_number(s->options, "prefix2");
1960 	key0 = (key & (KEYC_MASK_KEY|KEYC_MASK_MODIFIERS));
1961 	if ((key0 == (prefix & (KEYC_MASK_KEY|KEYC_MASK_MODIFIERS)) ||
1962 	    key0 == (prefix2 & (KEYC_MASK_KEY|KEYC_MASK_MODIFIERS))) &&
1963 	    strcmp(table->name, "prefix") != 0) {
1964 		server_client_set_key_table(c, "prefix");
1965 		server_status_client(c);
1966 		goto out;
1967 	}
1968 	flags = c->flags;
1969 
1970 try_again:
1971 	/* Log key table. */
1972 	if (wp == NULL)
1973 		log_debug("key table %s (no pane)", table->name);
1974 	else
1975 		log_debug("key table %s (pane %%%u)", table->name, wp->id);
1976 	if (c->flags & CLIENT_REPEAT)
1977 		log_debug("currently repeating");
1978 
1979 	bd = key_bindings_get(table, key0);
1980 
1981 	/*
1982 	 * If prefix-timeout is enabled and we're in the prefix table, see if
1983 	 * the timeout has been exceeded. Revert to the root table if so.
1984 	 */
1985 	prefix_delay = options_get_number(global_options, "prefix-timeout");
1986 	if (prefix_delay > 0 &&
1987 	    strcmp(table->name, "prefix") == 0 &&
1988 	    server_client_key_table_activity_diff(c) > prefix_delay) {
1989 		/*
1990 		 * If repeating is active and this is a repeating binding,
1991 		 * ignore the timeout.
1992 		 */
1993 		if (bd != NULL &&
1994 		    (c->flags & CLIENT_REPEAT) &&
1995 		    (bd->flags & KEY_BINDING_REPEAT)) {
1996 			log_debug("prefix timeout ignored, repeat is active");
1997 		} else {
1998 			log_debug("prefix timeout exceeded");
1999 			server_client_set_key_table(c, NULL);
2000 			first = table = c->keytable;
2001 			server_status_client(c);
2002 			goto table_changed;
2003 		}
2004 	}
2005 
2006 	/* Try to see if there is a key binding in the current table. */
2007 	if (bd != NULL) {
2008 		/*
2009 		 * Key was matched in this table. If currently repeating but a
2010 		 * non-repeating binding was found, stop repeating and try
2011 		 * again in the root table.
2012 		 */
2013 		if ((c->flags & CLIENT_REPEAT) &&
2014 		    (~bd->flags & KEY_BINDING_REPEAT)) {
2015 			log_debug("found in key table %s (not repeating)",
2016 			    table->name);
2017 			server_client_set_key_table(c, NULL);
2018 			first = table = c->keytable;
2019 			c->flags &= ~CLIENT_REPEAT;
2020 			server_status_client(c);
2021 			goto table_changed;
2022 		}
2023 		log_debug("found in key table %s", table->name);
2024 
2025 		/*
2026 		 * Take a reference to this table to make sure the key binding
2027 		 * doesn't disappear.
2028 		 */
2029 		table->references++;
2030 
2031 		/*
2032 		 * If this is a repeating key, start the timer. Otherwise reset
2033 		 * the client back to the root table.
2034 		 */
2035 		xtimeout = options_get_number(s->options, "repeat-time");
2036 		if (xtimeout != 0 && (bd->flags & KEY_BINDING_REPEAT)) {
2037 			c->flags |= CLIENT_REPEAT;
2038 
2039 			tv.tv_sec = xtimeout / 1000;
2040 			tv.tv_usec = (xtimeout % 1000) * 1000L;
2041 			evtimer_del(&c->repeat_timer);
2042 			evtimer_add(&c->repeat_timer, &tv);
2043 		} else {
2044 			c->flags &= ~CLIENT_REPEAT;
2045 			server_client_set_key_table(c, NULL);
2046 		}
2047 		server_status_client(c);
2048 
2049 		/* Execute the key binding. */
2050 		key_bindings_dispatch(bd, item, c, event, &fs);
2051 		key_bindings_unref_table(table);
2052 		goto out;
2053 	}
2054 
2055 	/*
2056 	 * No match, try the ANY key.
2057 	 */
2058 	if (key0 != KEYC_ANY) {
2059 		key0 = KEYC_ANY;
2060 		goto try_again;
2061 	}
2062 
2063 	/*
2064 	 * Binding movement keys is useless since we only turn them on when the
2065 	 * application requests, so don't let them exit the prefix table.
2066 	 */
2067 	if (key == KEYC_MOUSEMOVE_PANE ||
2068 	    key == KEYC_MOUSEMOVE_STATUS ||
2069 	    key == KEYC_MOUSEMOVE_STATUS_LEFT ||
2070 	    key == KEYC_MOUSEMOVE_STATUS_RIGHT ||
2071 	    key == KEYC_MOUSEMOVE_STATUS_DEFAULT ||
2072 	    key == KEYC_MOUSEMOVE_BORDER)
2073 		goto forward_key;
2074 
2075 	/*
2076 	 * No match in this table. If not in the root table or if repeating
2077 	 * switch the client back to the root table and try again.
2078 	 */
2079 	log_debug("not found in key table %s", table->name);
2080 	if (!server_client_is_default_key_table(c, table) ||
2081 	    (c->flags & CLIENT_REPEAT)) {
2082 		log_debug("trying in root table");
2083 		server_client_set_key_table(c, NULL);
2084 		table = c->keytable;
2085 		if (c->flags & CLIENT_REPEAT)
2086 			first = table;
2087 		c->flags &= ~CLIENT_REPEAT;
2088 		server_status_client(c);
2089 		goto table_changed;
2090 	}
2091 
2092 	/*
2093 	 * No match in the root table either. If this wasn't the first table
2094 	 * tried, don't pass the key to the pane.
2095 	 */
2096 	if (first != table && (~flags & CLIENT_REPEAT)) {
2097 		server_client_set_key_table(c, NULL);
2098 		server_status_client(c);
2099 		goto out;
2100 	}
2101 
2102 forward_key:
2103 	if (c->flags & CLIENT_READONLY)
2104 		goto out;
2105 	if (wp != NULL)
2106 		window_pane_key(wp, c, s, wl, key, m);
2107 
2108 out:
2109 	if (s != NULL && key != KEYC_FOCUS_OUT)
2110 		server_client_update_latest(c);
2111 	free(event);
2112 	return (CMD_RETURN_NORMAL);
2113 }
2114 
2115 /* Handle a key event. */
2116 int
2117 server_client_handle_key(struct client *c, struct key_event *event)
2118 {
2119 	struct session		*s = c->session;
2120 	struct cmdq_item	*item;
2121 
2122 	/* Check the client is good to accept input. */
2123 	if (s == NULL || (c->flags & CLIENT_UNATTACHEDFLAGS))
2124 		return (0);
2125 
2126 	/*
2127 	 * Key presses in overlay mode and the command prompt are a special
2128 	 * case. The queue might be blocked so they need to be processed
2129 	 * immediately rather than queued.
2130 	 */
2131 	if (~c->flags & CLIENT_READONLY) {
2132 		if (c->message_string != NULL) {
2133 			if (c->message_ignore_keys)
2134 				return (0);
2135 			status_message_clear(c);
2136 		}
2137 		if (c->overlay_key != NULL) {
2138 			switch (c->overlay_key(c, c->overlay_data, event)) {
2139 			case 0:
2140 				return (0);
2141 			case 1:
2142 				server_client_clear_overlay(c);
2143 				return (0);
2144 			}
2145 		}
2146 		server_client_clear_overlay(c);
2147 		if (c->prompt_string != NULL) {
2148 			if (status_prompt_key(c, event->key) == 0)
2149 				return (0);
2150 		}
2151 	}
2152 
2153 	/*
2154 	 * Add the key to the queue so it happens after any commands queued by
2155 	 * previous keys.
2156 	 */
2157 	item = cmdq_get_callback(server_client_key_callback, event);
2158 	cmdq_append(c, item);
2159 	return (1);
2160 }
2161 
2162 /* Client functions that need to happen every loop. */
2163 void
2164 server_client_loop(void)
2165 {
2166 	struct client		*c;
2167 	struct window		*w;
2168 	struct window_pane	*wp;
2169 
2170 	/* Check for window resize. This is done before redrawing. */
2171 	RB_FOREACH(w, windows, &windows)
2172 		server_client_check_window_resize(w);
2173 
2174 	/* Check clients. */
2175 	TAILQ_FOREACH(c, &clients, entry) {
2176 		server_client_check_exit(c);
2177 		if (c->session != NULL) {
2178 			server_client_check_modes(c);
2179 			server_client_check_redraw(c);
2180 			server_client_reset_state(c);
2181 		}
2182 	}
2183 
2184 	/*
2185 	 * Any windows will have been redrawn as part of clients, so clear
2186 	 * their flags now.
2187 	 */
2188 	RB_FOREACH(w, windows, &windows) {
2189 		TAILQ_FOREACH(wp, &w->panes, entry) {
2190 			if (wp->fd != -1) {
2191 				server_client_check_pane_resize(wp);
2192 				server_client_check_pane_buffer(wp);
2193 			}
2194 			wp->flags &= ~PANE_REDRAW;
2195 		}
2196 		check_window_name(w);
2197 	}
2198 }
2199 
2200 /* Check if window needs to be resized. */
2201 static void
2202 server_client_check_window_resize(struct window *w)
2203 {
2204 	struct winlink	*wl;
2205 
2206 	if (~w->flags & WINDOW_RESIZE)
2207 		return;
2208 
2209 	TAILQ_FOREACH(wl, &w->winlinks, wentry) {
2210 		if (wl->session->attached != 0 && wl->session->curw == wl)
2211 			break;
2212 	}
2213 	if (wl == NULL)
2214 		return;
2215 
2216 	log_debug("%s: resizing window @%u", __func__, w->id);
2217 	resize_window(w, w->new_sx, w->new_sy, w->new_xpixel, w->new_ypixel);
2218 }
2219 
2220 /* Resize timer event. */
2221 static void
2222 server_client_resize_timer(__unused int fd, __unused short events, void *data)
2223 {
2224 	struct window_pane	*wp = data;
2225 
2226 	log_debug("%s: %%%u resize timer expired", __func__, wp->id);
2227 	evtimer_del(&wp->resize_timer);
2228 }
2229 
2230 /* Check if pane should be resized. */
2231 static void
2232 server_client_check_pane_resize(struct window_pane *wp)
2233 {
2234 	struct window_pane_resize	*r;
2235 	struct window_pane_resize	*r1;
2236 	struct window_pane_resize	*first;
2237 	struct window_pane_resize	*last;
2238 	struct timeval			 tv = { .tv_usec = 250000 };
2239 
2240 	if (TAILQ_EMPTY(&wp->resize_queue))
2241 		return;
2242 
2243 	if (!event_initialized(&wp->resize_timer))
2244 		evtimer_set(&wp->resize_timer, server_client_resize_timer, wp);
2245 	if (evtimer_pending(&wp->resize_timer, NULL))
2246 		return;
2247 
2248 	log_debug("%s: %%%u needs to be resized", __func__, wp->id);
2249 	TAILQ_FOREACH(r, &wp->resize_queue, entry) {
2250 		log_debug("queued resize: %ux%u -> %ux%u", r->osx, r->osy,
2251 		    r->sx, r->sy);
2252 	}
2253 
2254 	/*
2255 	 * There are three cases that matter:
2256 	 *
2257 	 * - Only one resize. It can just be applied.
2258 	 *
2259 	 * - Multiple resizes and the ending size is different from the
2260 	 *   starting size. We can discard all resizes except the most recent.
2261 	 *
2262 	 * - Multiple resizes and the ending size is the same as the starting
2263 	 *   size. We must resize at least twice to force the application to
2264 	 *   redraw. So apply the first and leave the last on the queue for
2265 	 *   next time.
2266 	 */
2267 	first = TAILQ_FIRST(&wp->resize_queue);
2268 	last = TAILQ_LAST(&wp->resize_queue, window_pane_resizes);
2269 	if (first == last) {
2270 		/* Only one resize. */
2271 		window_pane_send_resize(wp, first->sx, first->sy);
2272 		TAILQ_REMOVE(&wp->resize_queue, first, entry);
2273 		free(first);
2274 	} else if (last->sx != first->osx || last->sy != first->osy) {
2275 		/* Multiple resizes ending up with a different size. */
2276 		window_pane_send_resize(wp, last->sx, last->sy);
2277 		TAILQ_FOREACH_SAFE(r, &wp->resize_queue, entry, r1) {
2278 			TAILQ_REMOVE(&wp->resize_queue, r, entry);
2279 			free(r);
2280 		}
2281 	} else {
2282 		/*
2283 		 * Multiple resizes ending up with the same size. There will
2284 		 * not be more than one to the same size in succession so we
2285 		 * can just use the last-but-one on the list and leave the last
2286 		 * for later. We reduce the time until the next check to avoid
2287 		 * a long delay between the resizes.
2288 		 */
2289 		r = TAILQ_PREV(last, window_pane_resizes, entry);
2290 		window_pane_send_resize(wp, r->sx, r->sy);
2291 		TAILQ_FOREACH_SAFE(r, &wp->resize_queue, entry, r1) {
2292 			if (r == last)
2293 				break;
2294 			TAILQ_REMOVE(&wp->resize_queue, r, entry);
2295 			free(r);
2296 		}
2297 		tv.tv_usec = 10000;
2298 	}
2299 	evtimer_add(&wp->resize_timer, &tv);
2300 }
2301 
2302 /* Check pane buffer size. */
2303 static void
2304 server_client_check_pane_buffer(struct window_pane *wp)
2305 {
2306 	struct evbuffer			*evb = wp->event->input;
2307 	size_t				 minimum;
2308 	struct client			*c;
2309 	struct window_pane_offset	*wpo;
2310 	int				 off = 1, flag;
2311 	u_int				 attached_clients = 0;
2312 	size_t				 new_size;
2313 
2314 	/*
2315 	 * Work out the minimum used size. This is the most that can be removed
2316 	 * from the buffer.
2317 	 */
2318 	minimum = wp->offset.used;
2319 	if (wp->pipe_fd != -1 && wp->pipe_offset.used < minimum)
2320 		minimum = wp->pipe_offset.used;
2321 	TAILQ_FOREACH(c, &clients, entry) {
2322 		if (c->session == NULL)
2323 			continue;
2324 		attached_clients++;
2325 
2326 		if (~c->flags & CLIENT_CONTROL) {
2327 			off = 0;
2328 			continue;
2329 		}
2330 		wpo = control_pane_offset(c, wp, &flag);
2331 		if (wpo == NULL) {
2332 			if (!flag)
2333 				off = 0;
2334 			continue;
2335 		}
2336 		if (!flag)
2337 			off = 0;
2338 
2339 		window_pane_get_new_data(wp, wpo, &new_size);
2340 		log_debug("%s: %s has %zu bytes used and %zu left for %%%u",
2341 		    __func__, c->name, wpo->used - wp->base_offset, new_size,
2342 		    wp->id);
2343 		if (wpo->used < minimum)
2344 			minimum = wpo->used;
2345 	}
2346 	if (attached_clients == 0)
2347 		off = 0;
2348 	minimum -= wp->base_offset;
2349 	if (minimum == 0)
2350 		goto out;
2351 
2352 	/* Drain the buffer. */
2353 	log_debug("%s: %%%u has %zu minimum (of %zu) bytes used", __func__,
2354 	    wp->id, minimum, EVBUFFER_LENGTH(evb));
2355 	evbuffer_drain(evb, minimum);
2356 
2357 	/*
2358 	 * Adjust the base offset. If it would roll over, all the offsets into
2359 	 * the buffer need to be adjusted.
2360 	 */
2361 	if (wp->base_offset > SIZE_MAX - minimum) {
2362 		log_debug("%s: %%%u base offset has wrapped", __func__, wp->id);
2363 		wp->offset.used -= wp->base_offset;
2364 		if (wp->pipe_fd != -1)
2365 			wp->pipe_offset.used -= wp->base_offset;
2366 		TAILQ_FOREACH(c, &clients, entry) {
2367 			if (c->session == NULL || (~c->flags & CLIENT_CONTROL))
2368 				continue;
2369 			wpo = control_pane_offset(c, wp, &flag);
2370 			if (wpo != NULL && !flag)
2371 				wpo->used -= wp->base_offset;
2372 		}
2373 		wp->base_offset = minimum;
2374 	} else
2375 		wp->base_offset += minimum;
2376 
2377 out:
2378 	/*
2379 	 * If there is data remaining, and there are no clients able to consume
2380 	 * it, do not read any more. This is true when there are attached
2381 	 * clients, all of which are control clients which are not able to
2382 	 * accept any more data.
2383 	 */
2384 	log_debug("%s: pane %%%u is %s", __func__, wp->id, off ? "off" : "on");
2385 	if (off)
2386 		bufferevent_disable(wp->event, EV_READ);
2387 	else
2388 		bufferevent_enable(wp->event, EV_READ);
2389 }
2390 
2391 /*
2392  * Update cursor position and mode settings. The scroll region and attributes
2393  * are cleared when idle (waiting for an event) as this is the most likely time
2394  * a user may interrupt tmux, for example with ~^Z in ssh(1). This is a
2395  * compromise between excessive resets and likelihood of an interrupt.
2396  *
2397  * tty_region/tty_reset/tty_update_mode already take care of not resetting
2398  * things that are already in their default state.
2399  */
2400 static void
2401 server_client_reset_state(struct client *c)
2402 {
2403 	struct tty		*tty = &c->tty;
2404 	struct window		*w = c->session->curw->window;
2405 	struct window_pane	*wp = server_client_get_pane(c), *loop;
2406 	struct screen		*s = NULL;
2407 	struct options		*oo = c->session->options;
2408 	int			 mode = 0, cursor, flags, n;
2409 	u_int			 cx = 0, cy = 0, ox, oy, sx, sy;
2410 
2411 	if (c->flags & (CLIENT_CONTROL|CLIENT_SUSPENDED))
2412 		return;
2413 
2414 	/* Disable the block flag. */
2415 	flags = (tty->flags & TTY_BLOCK);
2416 	tty->flags &= ~TTY_BLOCK;
2417 
2418 	/* Get mode from overlay if any, else from screen. */
2419 	if (c->overlay_draw != NULL) {
2420 		if (c->overlay_mode != NULL)
2421 			s = c->overlay_mode(c, c->overlay_data, &cx, &cy);
2422 	} else
2423 		s = wp->screen;
2424 	if (s != NULL)
2425 		mode = s->mode;
2426 	if (log_get_level() != 0) {
2427 		log_debug("%s: client %s mode %s", __func__, c->name,
2428 		    screen_mode_to_string(mode));
2429 	}
2430 
2431 	/* Reset region and margin. */
2432 	tty_region_off(tty);
2433 	tty_margin_off(tty);
2434 
2435 	/* Move cursor to pane cursor and offset. */
2436 	if (c->prompt_string != NULL) {
2437 		n = options_get_number(c->session->options, "status-position");
2438 		if (n == 0)
2439 			cy = 0;
2440 		else {
2441 			n = status_line_size(c);
2442 			if (n == 0)
2443 				cy = tty->sy - 1;
2444 			else
2445 				cy = tty->sy - n;
2446 		}
2447 		cx = c->prompt_cursor;
2448 		mode &= ~MODE_CURSOR;
2449 	} else if (c->overlay_draw == NULL) {
2450 		cursor = 0;
2451 		tty_window_offset(tty, &ox, &oy, &sx, &sy);
2452 		if (wp->xoff + s->cx >= ox && wp->xoff + s->cx <= ox + sx &&
2453 		    wp->yoff + s->cy >= oy && wp->yoff + s->cy <= oy + sy) {
2454 			cursor = 1;
2455 
2456 			cx = wp->xoff + s->cx - ox;
2457 			cy = wp->yoff + s->cy - oy;
2458 
2459 			if (status_at_line(c) == 0)
2460 				cy += status_line_size(c);
2461 		}
2462 		if (!cursor)
2463 			mode &= ~MODE_CURSOR;
2464 	}
2465 	log_debug("%s: cursor to %u,%u", __func__, cx, cy);
2466 	tty_cursor(tty, cx, cy);
2467 
2468 	/*
2469 	 * Set mouse mode if requested. To support dragging, always use button
2470 	 * mode.
2471 	 */
2472 	if (options_get_number(oo, "mouse")) {
2473 		if (c->overlay_draw == NULL) {
2474 			mode &= ~ALL_MOUSE_MODES;
2475 			TAILQ_FOREACH(loop, &w->panes, entry) {
2476 				if (loop->screen->mode & MODE_MOUSE_ALL)
2477 					mode |= MODE_MOUSE_ALL;
2478 			}
2479 		}
2480 		if (~mode & MODE_MOUSE_ALL)
2481 			mode |= MODE_MOUSE_BUTTON;
2482 	}
2483 
2484 	/* Clear bracketed paste mode if at the prompt. */
2485 	if (c->overlay_draw == NULL && c->prompt_string != NULL)
2486 		mode &= ~MODE_BRACKETPASTE;
2487 
2488 	/* Set the terminal mode and reset attributes. */
2489 	tty_update_mode(tty, mode, s);
2490 	tty_reset(tty);
2491 
2492 	/* All writing must be done, send a sync end (if it was started). */
2493 	tty_sync_end(tty);
2494 	tty->flags |= flags;
2495 }
2496 
2497 /* Repeat time callback. */
2498 static void
2499 server_client_repeat_timer(__unused int fd, __unused short events, void *data)
2500 {
2501 	struct client	*c = data;
2502 
2503 	if (c->flags & CLIENT_REPEAT) {
2504 		server_client_set_key_table(c, NULL);
2505 		c->flags &= ~CLIENT_REPEAT;
2506 		server_status_client(c);
2507 	}
2508 }
2509 
2510 /* Double-click callback. */
2511 static void
2512 server_client_click_timer(__unused int fd, __unused short events, void *data)
2513 {
2514 	struct client		*c = data;
2515 	struct key_event	*event;
2516 
2517 	log_debug("click timer expired");
2518 
2519 	if (c->flags & CLIENT_TRIPLECLICK) {
2520 		/*
2521 		 * Waiting for a third click that hasn't happened, so this must
2522 		 * have been a double click.
2523 		 */
2524 		event = xmalloc(sizeof *event);
2525 		event->key = KEYC_DOUBLECLICK;
2526 		memcpy(&event->m, &c->click_event, sizeof event->m);
2527 		if (!server_client_handle_key(c, event))
2528 			free(event);
2529 	}
2530 	c->flags &= ~(CLIENT_DOUBLECLICK|CLIENT_TRIPLECLICK);
2531 }
2532 
2533 /* Check if client should be exited. */
2534 static void
2535 server_client_check_exit(struct client *c)
2536 {
2537 	struct client_file	*cf;
2538 	const char		*name = c->exit_session;
2539 	char			*data;
2540 	size_t			 size, msize;
2541 
2542 	if (c->flags & (CLIENT_DEAD|CLIENT_EXITED))
2543 		return;
2544 	if (~c->flags & CLIENT_EXIT)
2545 		return;
2546 
2547 	if (c->flags & CLIENT_CONTROL) {
2548 		control_discard(c);
2549 		if (!control_all_done(c))
2550 			return;
2551 	}
2552 	RB_FOREACH(cf, client_files, &c->files) {
2553 		if (EVBUFFER_LENGTH(cf->buffer) != 0)
2554 			return;
2555 	}
2556 	c->flags |= CLIENT_EXITED;
2557 
2558 	switch (c->exit_type) {
2559 	case CLIENT_EXIT_RETURN:
2560 		if (c->exit_message != NULL)
2561 			msize = strlen(c->exit_message) + 1;
2562 		else
2563 			msize = 0;
2564 		size = (sizeof c->retval) + msize;
2565 		data = xmalloc(size);
2566 		memcpy(data, &c->retval, sizeof c->retval);
2567 		if (c->exit_message != NULL)
2568 			memcpy(data + sizeof c->retval, c->exit_message, msize);
2569 		proc_send(c->peer, MSG_EXIT, -1, data, size);
2570 		free(data);
2571 		break;
2572 	case CLIENT_EXIT_SHUTDOWN:
2573 		proc_send(c->peer, MSG_SHUTDOWN, -1, NULL, 0);
2574 		break;
2575 	case CLIENT_EXIT_DETACH:
2576 		proc_send(c->peer, c->exit_msgtype, -1, name, strlen(name) + 1);
2577 		break;
2578 	}
2579 	free(c->exit_session);
2580 	free(c->exit_message);
2581 }
2582 
2583 /* Redraw timer callback. */
2584 static void
2585 server_client_redraw_timer(__unused int fd, __unused short events,
2586     __unused void *data)
2587 {
2588 	log_debug("redraw timer fired");
2589 }
2590 
2591 /*
2592  * Check if modes need to be updated. Only modes in the current window are
2593  * updated and it is done when the status line is redrawn.
2594  */
2595 static void
2596 server_client_check_modes(struct client *c)
2597 {
2598 	struct window			*w = c->session->curw->window;
2599 	struct window_pane		*wp;
2600 	struct window_mode_entry	*wme;
2601 
2602 	if (c->flags & (CLIENT_CONTROL|CLIENT_SUSPENDED))
2603 		return;
2604 	if (~c->flags & CLIENT_REDRAWSTATUS)
2605 		return;
2606 	TAILQ_FOREACH(wp, &w->panes, entry) {
2607 		wme = TAILQ_FIRST(&wp->modes);
2608 		if (wme != NULL && wme->mode->update != NULL)
2609 			wme->mode->update(wme);
2610 	}
2611 }
2612 
2613 /* Check for client redraws. */
2614 static void
2615 server_client_check_redraw(struct client *c)
2616 {
2617 	struct session		*s = c->session;
2618 	struct tty		*tty = &c->tty;
2619 	struct window		*w = c->session->curw->window;
2620 	struct window_pane	*wp;
2621 	int			 needed, tty_flags, mode = tty->mode;
2622 	uint64_t		 client_flags = 0;
2623 	int			 redraw;
2624 	u_int			 bit = 0;
2625 	struct timeval		 tv = { .tv_usec = 1000 };
2626 	static struct event	 ev;
2627 	size_t			 left;
2628 
2629 	if (c->flags & (CLIENT_CONTROL|CLIENT_SUSPENDED))
2630 		return;
2631 	if (c->flags & CLIENT_ALLREDRAWFLAGS) {
2632 		log_debug("%s: redraw%s%s%s%s%s", c->name,
2633 		    (c->flags & CLIENT_REDRAWWINDOW) ? " window" : "",
2634 		    (c->flags & CLIENT_REDRAWSTATUS) ? " status" : "",
2635 		    (c->flags & CLIENT_REDRAWBORDERS) ? " borders" : "",
2636 		    (c->flags & CLIENT_REDRAWOVERLAY) ? " overlay" : "",
2637 		    (c->flags & CLIENT_REDRAWPANES) ? " panes" : "");
2638 	}
2639 
2640 	/*
2641 	 * If there is outstanding data, defer the redraw until it has been
2642 	 * consumed. We can just add a timer to get out of the event loop and
2643 	 * end up back here.
2644 	 */
2645 	needed = 0;
2646 	if (c->flags & CLIENT_ALLREDRAWFLAGS)
2647 		needed = 1;
2648 	else {
2649 		TAILQ_FOREACH(wp, &w->panes, entry) {
2650 			if (wp->flags & PANE_REDRAW) {
2651 				needed = 1;
2652 				break;
2653 			}
2654 		}
2655 		if (needed)
2656 			client_flags |= CLIENT_REDRAWPANES;
2657 	}
2658 	if (needed && (left = EVBUFFER_LENGTH(tty->out)) != 0) {
2659 		log_debug("%s: redraw deferred (%zu left)", c->name, left);
2660 		if (!evtimer_initialized(&ev))
2661 			evtimer_set(&ev, server_client_redraw_timer, NULL);
2662 		if (!evtimer_pending(&ev, NULL)) {
2663 			log_debug("redraw timer started");
2664 			evtimer_add(&ev, &tv);
2665 		}
2666 
2667 		if (~c->flags & CLIENT_REDRAWWINDOW) {
2668 			TAILQ_FOREACH(wp, &w->panes, entry) {
2669 				if (wp->flags & PANE_REDRAW) {
2670 					log_debug("%s: pane %%%u needs redraw",
2671 					    c->name, wp->id);
2672 					c->redraw_panes |= (1 << bit);
2673 				}
2674 				if (++bit == 64) {
2675 					/*
2676 					 * If more that 64 panes, give up and
2677 					 * just redraw the window.
2678 					 */
2679 					client_flags &= CLIENT_REDRAWPANES;
2680 					client_flags |= CLIENT_REDRAWWINDOW;
2681 					break;
2682 				}
2683 			}
2684 			if (c->redraw_panes != 0)
2685 				c->flags |= CLIENT_REDRAWPANES;
2686 		}
2687 		c->flags |= client_flags;
2688 		return;
2689 	} else if (needed)
2690 		log_debug("%s: redraw needed", c->name);
2691 
2692 	tty_flags = tty->flags & (TTY_BLOCK|TTY_FREEZE|TTY_NOCURSOR);
2693 	tty->flags = (tty->flags & ~(TTY_BLOCK|TTY_FREEZE))|TTY_NOCURSOR;
2694 
2695 	if (~c->flags & CLIENT_REDRAWWINDOW) {
2696 		/*
2697 		 * If not redrawing the entire window, check whether each pane
2698 		 * needs to be redrawn.
2699 		 */
2700 		TAILQ_FOREACH(wp, &w->panes, entry) {
2701 			redraw = 0;
2702 			if (wp->flags & PANE_REDRAW)
2703 				redraw = 1;
2704 			else if (c->flags & CLIENT_REDRAWPANES)
2705 				redraw = !!(c->redraw_panes & (1 << bit));
2706 			bit++;
2707 			if (!redraw)
2708 				continue;
2709 			log_debug("%s: redrawing pane %%%u", __func__, wp->id);
2710 			screen_redraw_pane(c, wp);
2711 		}
2712 		c->redraw_panes = 0;
2713 		c->flags &= ~CLIENT_REDRAWPANES;
2714 	}
2715 
2716 	if (c->flags & CLIENT_ALLREDRAWFLAGS) {
2717 		if (options_get_number(s->options, "set-titles")) {
2718 			server_client_set_title(c);
2719 			server_client_set_path(c);
2720 		}
2721 		screen_redraw_screen(c);
2722 	}
2723 
2724 	tty->flags = (tty->flags & ~TTY_NOCURSOR)|(tty_flags & TTY_NOCURSOR);
2725 	tty_update_mode(tty, mode, NULL);
2726 	tty->flags = (tty->flags & ~(TTY_BLOCK|TTY_FREEZE|TTY_NOCURSOR))|
2727 	    tty_flags;
2728 
2729 	c->flags &= ~(CLIENT_ALLREDRAWFLAGS|CLIENT_STATUSFORCE);
2730 
2731 	if (needed) {
2732 		/*
2733 		 * We would have deferred the redraw unless the output buffer
2734 		 * was empty, so we can record how many bytes the redraw
2735 		 * generated.
2736 		 */
2737 		c->redraw = EVBUFFER_LENGTH(tty->out);
2738 		log_debug("%s: redraw added %zu bytes", c->name, c->redraw);
2739 	}
2740 }
2741 
2742 /* Set client title. */
2743 static void
2744 server_client_set_title(struct client *c)
2745 {
2746 	struct session		*s = c->session;
2747 	const char		*template;
2748 	char			*title;
2749 	struct format_tree	*ft;
2750 
2751 	template = options_get_string(s->options, "set-titles-string");
2752 
2753 	ft = format_create(c, NULL, FORMAT_NONE, 0);
2754 	format_defaults(ft, c, NULL, NULL, NULL);
2755 
2756 	title = format_expand_time(ft, template);
2757 	if (c->title == NULL || strcmp(title, c->title) != 0) {
2758 		free(c->title);
2759 		c->title = xstrdup(title);
2760 		tty_set_title(&c->tty, c->title);
2761 	}
2762 	free(title);
2763 
2764 	format_free(ft);
2765 }
2766 
2767 /* Set client path. */
2768 static void
2769 server_client_set_path(struct client *c)
2770 {
2771 	struct session	*s = c->session;
2772 	const char	*path;
2773 
2774 	if (s->curw == NULL)
2775 		return;
2776 	if (s->curw->window->active->base.path == NULL)
2777 		path = "";
2778 	else
2779 		path = s->curw->window->active->base.path;
2780 	if (c->path == NULL || strcmp(path, c->path) != 0) {
2781 		free(c->path);
2782 		c->path = xstrdup(path);
2783 		tty_set_path(&c->tty, c->path);
2784 	}
2785 }
2786 
2787 /* Dispatch message from client. */
2788 static void
2789 server_client_dispatch(struct imsg *imsg, void *arg)
2790 {
2791 	struct client	*c = arg;
2792 	ssize_t		 datalen;
2793 	struct session	*s;
2794 
2795 	if (c->flags & CLIENT_DEAD)
2796 		return;
2797 
2798 	if (imsg == NULL) {
2799 		server_client_lost(c);
2800 		return;
2801 	}
2802 
2803 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
2804 
2805 	switch (imsg->hdr.type) {
2806 	case MSG_IDENTIFY_CLIENTPID:
2807 	case MSG_IDENTIFY_CWD:
2808 	case MSG_IDENTIFY_ENVIRON:
2809 	case MSG_IDENTIFY_FEATURES:
2810 	case MSG_IDENTIFY_FLAGS:
2811 	case MSG_IDENTIFY_LONGFLAGS:
2812 	case MSG_IDENTIFY_STDIN:
2813 	case MSG_IDENTIFY_STDOUT:
2814 	case MSG_IDENTIFY_TERM:
2815 	case MSG_IDENTIFY_TERMINFO:
2816 	case MSG_IDENTIFY_TTYNAME:
2817 	case MSG_IDENTIFY_DONE:
2818 		server_client_dispatch_identify(c, imsg);
2819 		break;
2820 	case MSG_COMMAND:
2821 		server_client_dispatch_command(c, imsg);
2822 		break;
2823 	case MSG_RESIZE:
2824 		if (datalen != 0)
2825 			fatalx("bad MSG_RESIZE size");
2826 
2827 		if (c->flags & CLIENT_CONTROL)
2828 			break;
2829 		server_client_update_latest(c);
2830 		tty_resize(&c->tty);
2831 		tty_repeat_requests(&c->tty);
2832 		recalculate_sizes();
2833 		if (c->overlay_resize == NULL)
2834 			server_client_clear_overlay(c);
2835 		else
2836 			c->overlay_resize(c, c->overlay_data);
2837 		server_redraw_client(c);
2838 		if (c->session != NULL)
2839 			notify_client("client-resized", c);
2840 		break;
2841 	case MSG_EXITING:
2842 		if (datalen != 0)
2843 			fatalx("bad MSG_EXITING size");
2844 		server_client_set_session(c, NULL);
2845 		recalculate_sizes();
2846 		tty_close(&c->tty);
2847 		proc_send(c->peer, MSG_EXITED, -1, NULL, 0);
2848 		break;
2849 	case MSG_WAKEUP:
2850 	case MSG_UNLOCK:
2851 		if (datalen != 0)
2852 			fatalx("bad MSG_WAKEUP size");
2853 
2854 		if (!(c->flags & CLIENT_SUSPENDED))
2855 			break;
2856 		c->flags &= ~CLIENT_SUSPENDED;
2857 
2858 		if (c->fd == -1 || c->session == NULL) /* exited already */
2859 			break;
2860 		s = c->session;
2861 
2862 		if (gettimeofday(&c->activity_time, NULL) != 0)
2863 			fatal("gettimeofday failed");
2864 
2865 		tty_start_tty(&c->tty);
2866 		server_redraw_client(c);
2867 		recalculate_sizes();
2868 
2869 		if (s != NULL)
2870 			session_update_activity(s, &c->activity_time);
2871 		break;
2872 	case MSG_SHELL:
2873 		if (datalen != 0)
2874 			fatalx("bad MSG_SHELL size");
2875 
2876 		server_client_dispatch_shell(c);
2877 		break;
2878 	case MSG_WRITE_READY:
2879 		file_write_ready(&c->files, imsg);
2880 		break;
2881 	case MSG_READ:
2882 		file_read_data(&c->files, imsg);
2883 		break;
2884 	case MSG_READ_DONE:
2885 		file_read_done(&c->files, imsg);
2886 		break;
2887 	}
2888 }
2889 
2890 /* Callback when command is not allowed. */
2891 static enum cmd_retval
2892 server_client_read_only(struct cmdq_item *item, __unused void *data)
2893 {
2894 	cmdq_error(item, "client is read-only");
2895 	return (CMD_RETURN_ERROR);
2896 }
2897 
2898 /* Callback when command is done. */
2899 static enum cmd_retval
2900 server_client_command_done(struct cmdq_item *item, __unused void *data)
2901 {
2902 	struct client	*c = cmdq_get_client(item);
2903 
2904 	if (~c->flags & CLIENT_ATTACHED)
2905 		c->flags |= CLIENT_EXIT;
2906 	else if (~c->flags & CLIENT_EXIT) {
2907 		if (c->flags & CLIENT_CONTROL)
2908 			control_ready(c);
2909 		tty_send_requests(&c->tty);
2910 	}
2911 	return (CMD_RETURN_NORMAL);
2912 }
2913 
2914 /* Handle command message. */
2915 static void
2916 server_client_dispatch_command(struct client *c, struct imsg *imsg)
2917 {
2918 	struct msg_command	  data;
2919 	char			 *buf;
2920 	size_t			  len;
2921 	int			  argc;
2922 	char			**argv, *cause;
2923 	struct cmd_parse_result	 *pr;
2924 	struct args_value	 *values;
2925 	struct cmdq_item	 *new_item;
2926 
2927 	if (c->flags & CLIENT_EXIT)
2928 		return;
2929 
2930 	if (imsg->hdr.len - IMSG_HEADER_SIZE < sizeof data)
2931 		fatalx("bad MSG_COMMAND size");
2932 	memcpy(&data, imsg->data, sizeof data);
2933 
2934 	buf = (char *)imsg->data + sizeof data;
2935 	len = imsg->hdr.len  - IMSG_HEADER_SIZE - sizeof data;
2936 	if (len > 0 && buf[len - 1] != '\0')
2937 		fatalx("bad MSG_COMMAND string");
2938 
2939 	argc = data.argc;
2940 	if (cmd_unpack_argv(buf, len, argc, &argv) != 0) {
2941 		cause = xstrdup("command too long");
2942 		goto error;
2943 	}
2944 
2945 	if (argc == 0) {
2946 		argc = 1;
2947 		argv = xcalloc(1, sizeof *argv);
2948 		*argv = xstrdup("new-session");
2949 	}
2950 
2951 	values = args_from_vector(argc, argv);
2952 	pr = cmd_parse_from_arguments(values, argc, NULL);
2953 	switch (pr->status) {
2954 	case CMD_PARSE_ERROR:
2955 		cause = pr->error;
2956 		goto error;
2957 	case CMD_PARSE_SUCCESS:
2958 		break;
2959 	}
2960 	args_free_values(values, argc);
2961 	free(values);
2962 	cmd_free_argv(argc, argv);
2963 
2964 	if ((c->flags & CLIENT_READONLY) &&
2965 	    !cmd_list_all_have(pr->cmdlist, CMD_READONLY))
2966 		new_item = cmdq_get_callback(server_client_read_only, NULL);
2967 	else
2968 		new_item = cmdq_get_command(pr->cmdlist, NULL);
2969 	cmdq_append(c, new_item);
2970 	cmdq_append(c, cmdq_get_callback(server_client_command_done, NULL));
2971 
2972 	cmd_list_free(pr->cmdlist);
2973 	return;
2974 
2975 error:
2976 	cmd_free_argv(argc, argv);
2977 
2978 	cmdq_append(c, cmdq_get_error(cause));
2979 	free(cause);
2980 
2981 	c->flags |= CLIENT_EXIT;
2982 }
2983 
2984 /* Handle identify message. */
2985 static void
2986 server_client_dispatch_identify(struct client *c, struct imsg *imsg)
2987 {
2988 	const char	*data, *home;
2989 	size_t		 datalen;
2990 	int		 flags, feat;
2991 	uint64_t	 longflags;
2992 	char		*name;
2993 
2994 	if (c->flags & CLIENT_IDENTIFIED)
2995 		fatalx("out-of-order identify message");
2996 
2997 	data = imsg->data;
2998 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
2999 
3000 	switch (imsg->hdr.type)	{
3001 	case MSG_IDENTIFY_FEATURES:
3002 		if (datalen != sizeof feat)
3003 			fatalx("bad MSG_IDENTIFY_FEATURES size");
3004 		memcpy(&feat, data, sizeof feat);
3005 		c->term_features |= feat;
3006 		log_debug("client %p IDENTIFY_FEATURES %s", c,
3007 		    tty_get_features(feat));
3008 		break;
3009 	case MSG_IDENTIFY_FLAGS:
3010 		if (datalen != sizeof flags)
3011 			fatalx("bad MSG_IDENTIFY_FLAGS size");
3012 		memcpy(&flags, data, sizeof flags);
3013 		c->flags |= flags;
3014 		log_debug("client %p IDENTIFY_FLAGS %#x", c, flags);
3015 		break;
3016 	case MSG_IDENTIFY_LONGFLAGS:
3017 		if (datalen != sizeof longflags)
3018 			fatalx("bad MSG_IDENTIFY_LONGFLAGS size");
3019 		memcpy(&longflags, data, sizeof longflags);
3020 		c->flags |= longflags;
3021 		log_debug("client %p IDENTIFY_LONGFLAGS %#llx", c,
3022 		    (unsigned long long)longflags);
3023 		break;
3024 	case MSG_IDENTIFY_TERM:
3025 		if (datalen == 0 || data[datalen - 1] != '\0')
3026 			fatalx("bad MSG_IDENTIFY_TERM string");
3027 		if (*data == '\0')
3028 			c->term_name = xstrdup("unknown");
3029 		else
3030 			c->term_name = xstrdup(data);
3031 		log_debug("client %p IDENTIFY_TERM %s", c, data);
3032 		break;
3033 	case MSG_IDENTIFY_TERMINFO:
3034 		if (datalen == 0 || data[datalen - 1] != '\0')
3035 			fatalx("bad MSG_IDENTIFY_TERMINFO string");
3036 		c->term_caps = xreallocarray(c->term_caps, c->term_ncaps + 1,
3037 		    sizeof *c->term_caps);
3038 		c->term_caps[c->term_ncaps++] = xstrdup(data);
3039 		log_debug("client %p IDENTIFY_TERMINFO %s", c, data);
3040 		break;
3041 	case MSG_IDENTIFY_TTYNAME:
3042 		if (datalen == 0 || data[datalen - 1] != '\0')
3043 			fatalx("bad MSG_IDENTIFY_TTYNAME string");
3044 		c->ttyname = xstrdup(data);
3045 		log_debug("client %p IDENTIFY_TTYNAME %s", c, data);
3046 		break;
3047 	case MSG_IDENTIFY_CWD:
3048 		if (datalen == 0 || data[datalen - 1] != '\0')
3049 			fatalx("bad MSG_IDENTIFY_CWD string");
3050 		if (access(data, X_OK) == 0)
3051 			c->cwd = xstrdup(data);
3052 		else if ((home = find_home()) != NULL)
3053 			c->cwd = xstrdup(home);
3054 		else
3055 			c->cwd = xstrdup("/");
3056 		log_debug("client %p IDENTIFY_CWD %s", c, data);
3057 		break;
3058 	case MSG_IDENTIFY_STDIN:
3059 		if (datalen != 0)
3060 			fatalx("bad MSG_IDENTIFY_STDIN size");
3061 		c->fd = imsg_get_fd(imsg);
3062 		log_debug("client %p IDENTIFY_STDIN %d", c, c->fd);
3063 		break;
3064 	case MSG_IDENTIFY_STDOUT:
3065 		if (datalen != 0)
3066 			fatalx("bad MSG_IDENTIFY_STDOUT size");
3067 		c->out_fd = imsg_get_fd(imsg);
3068 		log_debug("client %p IDENTIFY_STDOUT %d", c, c->out_fd);
3069 		break;
3070 	case MSG_IDENTIFY_ENVIRON:
3071 		if (datalen == 0 || data[datalen - 1] != '\0')
3072 			fatalx("bad MSG_IDENTIFY_ENVIRON string");
3073 		if (strchr(data, '=') != NULL)
3074 			environ_put(c->environ, data, 0);
3075 		log_debug("client %p IDENTIFY_ENVIRON %s", c, data);
3076 		break;
3077 	case MSG_IDENTIFY_CLIENTPID:
3078 		if (datalen != sizeof c->pid)
3079 			fatalx("bad MSG_IDENTIFY_CLIENTPID size");
3080 		memcpy(&c->pid, data, sizeof c->pid);
3081 		log_debug("client %p IDENTIFY_CLIENTPID %ld", c, (long)c->pid);
3082 		break;
3083 	default:
3084 		break;
3085 	}
3086 
3087 	if (imsg->hdr.type != MSG_IDENTIFY_DONE)
3088 		return;
3089 	c->flags |= CLIENT_IDENTIFIED;
3090 
3091 	if (*c->ttyname != '\0')
3092 		name = xstrdup(c->ttyname);
3093 	else
3094 		xasprintf(&name, "client-%ld", (long)c->pid);
3095 	c->name = name;
3096 	log_debug("client %p name is %s", c, c->name);
3097 
3098 	if (c->flags & CLIENT_CONTROL)
3099 		control_start(c);
3100 	else if (c->fd != -1) {
3101 		if (tty_init(&c->tty, c) != 0) {
3102 			close(c->fd);
3103 			c->fd = -1;
3104 		} else {
3105 			tty_resize(&c->tty);
3106 			c->flags |= CLIENT_TERMINAL;
3107 		}
3108 		close(c->out_fd);
3109 		c->out_fd = -1;
3110 	}
3111 
3112 	/*
3113 	 * If this is the first client, load configuration files. Any later
3114 	 * clients are allowed to continue with their command even if the
3115 	 * config has not been loaded - they might have been run from inside it
3116 	 */
3117 	if ((~c->flags & CLIENT_EXIT) &&
3118 	     !cfg_finished &&
3119 	     c == TAILQ_FIRST(&clients))
3120 		start_cfg();
3121 }
3122 
3123 /* Handle shell message. */
3124 static void
3125 server_client_dispatch_shell(struct client *c)
3126 {
3127 	const char	*shell;
3128 
3129 	shell = options_get_string(global_s_options, "default-shell");
3130 	if (!checkshell(shell))
3131 		shell = _PATH_BSHELL;
3132 	proc_send(c->peer, MSG_SHELL, -1, shell, strlen(shell) + 1);
3133 
3134 	proc_kill_peer(c->peer);
3135 }
3136 
3137 /* Get client working directory. */
3138 const char *
3139 server_client_get_cwd(struct client *c, struct session *s)
3140 {
3141 	const char	*home;
3142 
3143 	if (!cfg_finished && cfg_client != NULL)
3144 		return (cfg_client->cwd);
3145 	if (c != NULL && c->session == NULL && c->cwd != NULL)
3146 		return (c->cwd);
3147 	if (s != NULL && s->cwd != NULL)
3148 		return (s->cwd);
3149 	if (c != NULL && (s = c->session) != NULL && s->cwd != NULL)
3150 		return (s->cwd);
3151 	if ((home = find_home()) != NULL)
3152 		return (home);
3153 	return ("/");
3154 }
3155 
3156 /* Get control client flags. */
3157 static uint64_t
3158 server_client_control_flags(struct client *c, const char *next)
3159 {
3160 	if (strcmp(next, "pause-after") == 0) {
3161 		c->pause_age = 0;
3162 		return (CLIENT_CONTROL_PAUSEAFTER);
3163 	}
3164 	if (sscanf(next, "pause-after=%u", &c->pause_age) == 1) {
3165 		c->pause_age *= 1000;
3166 		return (CLIENT_CONTROL_PAUSEAFTER);
3167 	}
3168 	if (strcmp(next, "no-output") == 0)
3169 		return (CLIENT_CONTROL_NOOUTPUT);
3170 	if (strcmp(next, "wait-exit") == 0)
3171 		return (CLIENT_CONTROL_WAITEXIT);
3172 	return (0);
3173 }
3174 
3175 /* Set client flags. */
3176 void
3177 server_client_set_flags(struct client *c, const char *flags)
3178 {
3179 	char	*s, *copy, *next;
3180 	uint64_t flag;
3181 	int	 not;
3182 
3183 	s = copy = xstrdup(flags);
3184 	while ((next = strsep(&s, ",")) != NULL) {
3185 		not = (*next == '!');
3186 		if (not)
3187 			next++;
3188 
3189 		if (c->flags & CLIENT_CONTROL)
3190 			flag = server_client_control_flags(c, next);
3191 		else
3192 			flag = 0;
3193 		if (strcmp(next, "read-only") == 0)
3194 			flag = CLIENT_READONLY;
3195 		else if (strcmp(next, "ignore-size") == 0)
3196 			flag = CLIENT_IGNORESIZE;
3197 		else if (strcmp(next, "active-pane") == 0)
3198 			flag = CLIENT_ACTIVEPANE;
3199 		if (flag == 0)
3200 			continue;
3201 
3202 		log_debug("client %s set flag %s", c->name, next);
3203 		if (not) {
3204 			if (c->flags & CLIENT_READONLY)
3205 				flag &= ~CLIENT_READONLY;
3206 			c->flags &= ~flag;
3207 		} else
3208 			c->flags |= flag;
3209 		if (flag == CLIENT_CONTROL_NOOUTPUT)
3210 			control_reset_offsets(c);
3211 	}
3212 	free(copy);
3213 	proc_send(c->peer, MSG_FLAGS, -1, &c->flags, sizeof c->flags);
3214 }
3215 
3216 /* Get client flags. This is only flags useful to show to users. */
3217 const char *
3218 server_client_get_flags(struct client *c)
3219 {
3220 	static char	s[256];
3221 	char	 	tmp[32];
3222 
3223 	*s = '\0';
3224 	if (c->flags & CLIENT_ATTACHED)
3225 		strlcat(s, "attached,", sizeof s);
3226 	if (c->flags & CLIENT_FOCUSED)
3227 		strlcat(s, "focused,", sizeof s);
3228 	if (c->flags & CLIENT_CONTROL)
3229 		strlcat(s, "control-mode,", sizeof s);
3230 	if (c->flags & CLIENT_IGNORESIZE)
3231 		strlcat(s, "ignore-size,", sizeof s);
3232 	if (c->flags & CLIENT_CONTROL_NOOUTPUT)
3233 		strlcat(s, "no-output,", sizeof s);
3234 	if (c->flags & CLIENT_CONTROL_WAITEXIT)
3235 		strlcat(s, "wait-exit,", sizeof s);
3236 	if (c->flags & CLIENT_CONTROL_PAUSEAFTER) {
3237 		xsnprintf(tmp, sizeof tmp, "pause-after=%u,",
3238 		    c->pause_age / 1000);
3239 		strlcat(s, tmp, sizeof s);
3240 	}
3241 	if (c->flags & CLIENT_READONLY)
3242 		strlcat(s, "read-only,", sizeof s);
3243 	if (c->flags & CLIENT_ACTIVEPANE)
3244 		strlcat(s, "active-pane,", sizeof s);
3245 	if (c->flags & CLIENT_SUSPENDED)
3246 		strlcat(s, "suspended,", sizeof s);
3247 	if (c->flags & CLIENT_UTF8)
3248 		strlcat(s, "UTF-8,", sizeof s);
3249 	if (*s != '\0')
3250 		s[strlen(s) - 1] = '\0';
3251 	return (s);
3252 }
3253 
3254 /* Get client window. */
3255 struct client_window *
3256 server_client_get_client_window(struct client *c, u_int id)
3257 {
3258 	struct client_window	cw = { .window = id };
3259 
3260 	return (RB_FIND(client_windows, &c->windows, &cw));
3261 }
3262 
3263 /* Add client window. */
3264 struct client_window *
3265 server_client_add_client_window(struct client *c, u_int id)
3266 {
3267 	struct client_window	*cw;
3268 
3269 	cw = server_client_get_client_window(c, id);
3270 	if (cw == NULL) {
3271 		cw = xcalloc(1, sizeof *cw);
3272 		cw->window = id;
3273 		RB_INSERT(client_windows, &c->windows, cw);
3274 	}
3275 	return (cw);
3276 }
3277 
3278 /* Get client active pane. */
3279 struct window_pane *
3280 server_client_get_pane(struct client *c)
3281 {
3282 	struct session		*s = c->session;
3283 	struct client_window	*cw;
3284 
3285 	if (s == NULL)
3286 		return (NULL);
3287 
3288 	if (~c->flags & CLIENT_ACTIVEPANE)
3289 		return (s->curw->window->active);
3290 	cw = server_client_get_client_window(c, s->curw->window->id);
3291 	if (cw == NULL)
3292 		return (s->curw->window->active);
3293 	return (cw->pane);
3294 }
3295 
3296 /* Set client active pane. */
3297 void
3298 server_client_set_pane(struct client *c, struct window_pane *wp)
3299 {
3300 	struct session		*s = c->session;
3301 	struct client_window	*cw;
3302 
3303 	if (s == NULL)
3304 		return;
3305 
3306 	cw = server_client_add_client_window(c, s->curw->window->id);
3307 	cw->pane = wp;
3308 	log_debug("%s pane now %%%u", c->name, wp->id);
3309 }
3310 
3311 /* Remove pane from client lists. */
3312 void
3313 server_client_remove_pane(struct window_pane *wp)
3314 {
3315 	struct client		*c;
3316 	struct window		*w = wp->window;
3317 	struct client_window	*cw;
3318 
3319 	TAILQ_FOREACH(c, &clients, entry) {
3320 		cw = server_client_get_client_window(c, w->id);
3321 		if (cw != NULL && cw->pane == wp) {
3322 			RB_REMOVE(client_windows, &c->windows, cw);
3323 			free(cw);
3324 		}
3325 	}
3326 }
3327 
3328 /* Print to a client. */
3329 void
3330 server_client_print(struct client *c, int parse, struct evbuffer *evb)
3331 {
3332 	void				*data = EVBUFFER_DATA(evb);
3333 	size_t				 size = EVBUFFER_LENGTH(evb);
3334 	struct window_pane		*wp;
3335 	struct window_mode_entry	*wme;
3336 	char				*sanitized, *msg, *line;
3337 
3338 	if (!parse) {
3339 		utf8_stravisx(&msg, data, size,
3340 		    VIS_OCTAL|VIS_CSTYLE|VIS_NOSLASH);
3341 		log_debug("%s: %s", __func__, msg);
3342 	} else {
3343 		msg = EVBUFFER_DATA(evb);
3344 		if (msg[size - 1] != '\0')
3345 			evbuffer_add(evb, "", 1);
3346 	}
3347 
3348 	if (c == NULL)
3349 		goto out;
3350 
3351 	if (c->session == NULL || (c->flags & CLIENT_CONTROL)) {
3352 		if (~c->flags & CLIENT_UTF8) {
3353 			sanitized = utf8_sanitize(msg);
3354 			if (c->flags & CLIENT_CONTROL)
3355 				control_write(c, "%s", sanitized);
3356 			else
3357 				file_print(c, "%s\n", sanitized);
3358 			free(sanitized);
3359 		} else {
3360 			if (c->flags & CLIENT_CONTROL)
3361 				control_write(c, "%s", msg);
3362 			else
3363 				file_print(c, "%s\n", msg);
3364 		}
3365 		goto out;
3366 	}
3367 
3368 	wp = server_client_get_pane(c);
3369 	wme = TAILQ_FIRST(&wp->modes);
3370 	if (wme == NULL || wme->mode != &window_view_mode)
3371 		window_pane_set_mode(wp, NULL, &window_view_mode, NULL, NULL);
3372 	if (parse) {
3373 		do {
3374 			line = evbuffer_readln(evb, NULL, EVBUFFER_EOL_LF);
3375 			if (line != NULL) {
3376 				window_copy_add(wp, 1, "%s", line);
3377 				free(line);
3378 			}
3379 		} while (line != NULL);
3380 
3381 		size = EVBUFFER_LENGTH(evb);
3382 		if (size != 0) {
3383 			line = EVBUFFER_DATA(evb);
3384 			window_copy_add(wp, 1, "%.*s", (int)size, line);
3385 		}
3386 	} else
3387 		window_copy_add(wp, 0, "%s", msg);
3388 
3389 out:
3390 	if (!parse)
3391 		free(msg);
3392 }
3393