xref: /openbsd-src/usr.bin/tmux/server-client.c (revision 5c389b79544373bccfce668b646e62e7ba9802a3)
1 /* $OpenBSD: server-client.c,v 1.400 2023/02/05 21:15:32 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 }
230 
231 /* Get default key table. */
232 const char *
233 server_client_get_key_table(struct client *c)
234 {
235 	struct session	*s = c->session;
236 	const char	*name;
237 
238 	if (s == NULL)
239 		return ("root");
240 
241 	name = options_get_string(s->options, "key-table");
242 	if (*name == '\0')
243 		return ("root");
244 	return (name);
245 }
246 
247 /* Is this table the default key table? */
248 static int
249 server_client_is_default_key_table(struct client *c, struct key_table *table)
250 {
251 	return (strcmp(table->name, server_client_get_key_table(c)) == 0);
252 }
253 
254 /* Create a new client. */
255 struct client *
256 server_client_create(int fd)
257 {
258 	struct client	*c;
259 
260 	setblocking(fd, 0);
261 
262 	c = xcalloc(1, sizeof *c);
263 	c->references = 1;
264 	c->peer = proc_add_peer(server_proc, fd, server_client_dispatch, c);
265 
266 	if (gettimeofday(&c->creation_time, NULL) != 0)
267 		fatal("gettimeofday failed");
268 	memcpy(&c->activity_time, &c->creation_time, sizeof c->activity_time);
269 
270 	c->environ = environ_create();
271 
272 	c->fd = -1;
273 	c->out_fd = -1;
274 
275 	c->queue = cmdq_new();
276 	RB_INIT(&c->windows);
277 	RB_INIT(&c->files);
278 
279 	c->tty.sx = 80;
280 	c->tty.sy = 24;
281 
282 	status_init(c);
283 	c->flags |= CLIENT_FOCUSED;
284 
285 	c->keytable = key_bindings_get_table("root", 1);
286 	c->keytable->references++;
287 
288 	evtimer_set(&c->repeat_timer, server_client_repeat_timer, c);
289 	evtimer_set(&c->click_timer, server_client_click_timer, c);
290 
291 	TAILQ_INSERT_TAIL(&clients, c, entry);
292 	log_debug("new client %p", c);
293 	return (c);
294 }
295 
296 /* Open client terminal if needed. */
297 int
298 server_client_open(struct client *c, char **cause)
299 {
300 	const char	*ttynam = _PATH_TTY;
301 
302 	if (c->flags & CLIENT_CONTROL)
303 		return (0);
304 
305 	if (strcmp(c->ttyname, ttynam) == 0||
306 	    ((isatty(STDIN_FILENO) &&
307 	    (ttynam = ttyname(STDIN_FILENO)) != NULL &&
308 	    strcmp(c->ttyname, ttynam) == 0) ||
309 	    (isatty(STDOUT_FILENO) &&
310 	    (ttynam = ttyname(STDOUT_FILENO)) != NULL &&
311 	    strcmp(c->ttyname, ttynam) == 0) ||
312 	    (isatty(STDERR_FILENO) &&
313 	    (ttynam = ttyname(STDERR_FILENO)) != NULL &&
314 	    strcmp(c->ttyname, ttynam) == 0))) {
315 		xasprintf(cause, "can't use %s", c->ttyname);
316 		return (-1);
317 	}
318 
319 	if (!(c->flags & CLIENT_TERMINAL)) {
320 		*cause = xstrdup("not a terminal");
321 		return (-1);
322 	}
323 
324 	if (tty_open(&c->tty, cause) != 0)
325 		return (-1);
326 
327 	return (0);
328 }
329 
330 /* Lost an attached client. */
331 static void
332 server_client_attached_lost(struct client *c)
333 {
334 	struct session	*s;
335 	struct window	*w;
336 	struct client	*loop;
337 	struct client	*found;
338 
339 	log_debug("lost attached client %p", c);
340 
341 	/*
342 	 * By this point the session in the client has been cleared so walk all
343 	 * windows to find any with this client as the latest.
344 	 */
345 	RB_FOREACH(w, windows, &windows) {
346 		if (w->latest != c)
347 			continue;
348 
349 		found = NULL;
350 		TAILQ_FOREACH(loop, &clients, entry) {
351 			s = loop->session;
352 			if (loop == c || s == NULL || s->curw->window != w)
353 				continue;
354 			if (found == NULL || timercmp(&loop->activity_time,
355 			    &found->activity_time, >))
356 				found = loop;
357 		}
358 		if (found != NULL)
359 			server_client_update_latest(found);
360 	}
361 }
362 
363 /* Set client session. */
364 void
365 server_client_set_session(struct client *c, struct session *s)
366 {
367 	struct session	*old = c->session;
368 
369 	if (s != NULL && c->session != NULL && c->session != s)
370 		c->last_session = c->session;
371 	else if (s == NULL)
372 		c->last_session = NULL;
373 	c->session = s;
374 	c->flags |= CLIENT_FOCUSED;
375 
376 	if (old != NULL && old->curw != NULL)
377 		window_update_focus(old->curw->window);
378 	if (s != NULL) {
379 		recalculate_sizes();
380 		window_update_focus(s->curw->window);
381 		session_update_activity(s, NULL);
382 		gettimeofday(&s->last_attached_time, NULL);
383 		s->curw->flags &= ~WINLINK_ALERTFLAGS;
384 		s->curw->window->latest = c;
385 		alerts_check_session(s);
386 		tty_update_client_offset(c);
387 		status_timer_start(c);
388 		notify_client("client-session-changed", c);
389 		server_redraw_client(c);
390 	}
391 
392 	server_check_unattached();
393 	server_update_socket();
394 }
395 
396 /* Lost a client. */
397 void
398 server_client_lost(struct client *c)
399 {
400 	struct client_file	*cf, *cf1;
401 	struct client_window	*cw, *cw1;
402 
403 	c->flags |= CLIENT_DEAD;
404 
405 	server_client_clear_overlay(c);
406 	status_prompt_clear(c);
407 	status_message_clear(c);
408 
409 	RB_FOREACH_SAFE(cf, client_files, &c->files, cf1) {
410 		cf->error = EINTR;
411 		file_fire_done(cf);
412 	}
413 	RB_FOREACH_SAFE(cw, client_windows, &c->windows, cw1) {
414 		RB_REMOVE(client_windows, &c->windows, cw);
415 		free(cw);
416 	}
417 
418 	TAILQ_REMOVE(&clients, c, entry);
419 	log_debug("lost client %p", c);
420 
421 	if (c->flags & CLIENT_ATTACHED) {
422 		server_client_attached_lost(c);
423 		notify_client("client-detached", c);
424 	}
425 
426 	if (c->flags & CLIENT_CONTROL)
427 		control_stop(c);
428 	if (c->flags & CLIENT_TERMINAL)
429 		tty_free(&c->tty);
430 	free(c->ttyname);
431 	free(c->clipboard_panes);
432 
433 	free(c->term_name);
434 	free(c->term_type);
435 	tty_term_free_list(c->term_caps, c->term_ncaps);
436 
437 	status_free(c);
438 
439 	free(c->title);
440 	free((void *)c->cwd);
441 
442 	evtimer_del(&c->repeat_timer);
443 	evtimer_del(&c->click_timer);
444 
445 	key_bindings_unref_table(c->keytable);
446 
447 	free(c->message_string);
448 	if (event_initialized(&c->message_timer))
449 		evtimer_del(&c->message_timer);
450 
451 	free(c->prompt_saved);
452 	free(c->prompt_string);
453 	free(c->prompt_buffer);
454 
455 	format_lost_client(c);
456 	environ_free(c->environ);
457 
458 	proc_remove_peer(c->peer);
459 	c->peer = NULL;
460 
461 	if (c->out_fd != -1)
462 		close(c->out_fd);
463 	if (c->fd != -1) {
464 		close(c->fd);
465 		c->fd = -1;
466 	}
467 	server_client_unref(c);
468 
469 	server_add_accept(0); /* may be more file descriptors now */
470 
471 	recalculate_sizes();
472 	server_check_unattached();
473 	server_update_socket();
474 }
475 
476 /* Remove reference from a client. */
477 void
478 server_client_unref(struct client *c)
479 {
480 	log_debug("unref client %p (%d references)", c, c->references);
481 
482 	c->references--;
483 	if (c->references == 0)
484 		event_once(-1, EV_TIMEOUT, server_client_free, c, NULL);
485 }
486 
487 /* Free dead client. */
488 static void
489 server_client_free(__unused int fd, __unused short events, void *arg)
490 {
491 	struct client	*c = arg;
492 
493 	log_debug("free client %p (%d references)", c, c->references);
494 
495 	cmdq_free(c->queue);
496 
497 	if (c->references == 0) {
498 		free((void *)c->name);
499 		free(c);
500 	}
501 }
502 
503 /* Suspend a client. */
504 void
505 server_client_suspend(struct client *c)
506 {
507 	struct session	*s = c->session;
508 
509 	if (s == NULL || (c->flags & CLIENT_UNATTACHEDFLAGS))
510 		return;
511 
512 	tty_stop_tty(&c->tty);
513 	c->flags |= CLIENT_SUSPENDED;
514 	proc_send(c->peer, MSG_SUSPEND, -1, NULL, 0);
515 }
516 
517 /* Detach a client. */
518 void
519 server_client_detach(struct client *c, enum msgtype msgtype)
520 {
521 	struct session	*s = c->session;
522 
523 	if (s == NULL || (c->flags & CLIENT_NODETACHFLAGS))
524 		return;
525 
526 	c->flags |= CLIENT_EXIT;
527 
528 	c->exit_type = CLIENT_EXIT_DETACH;
529 	c->exit_msgtype = msgtype;
530 	c->exit_session = xstrdup(s->name);
531 }
532 
533 /* Execute command to replace a client. */
534 void
535 server_client_exec(struct client *c, const char *cmd)
536 {
537 	struct session	*s = c->session;
538 	char		*msg;
539 	const char	*shell;
540 	size_t		 cmdsize, shellsize;
541 
542 	if (*cmd == '\0')
543 		return;
544 	cmdsize = strlen(cmd) + 1;
545 
546 	if (s != NULL)
547 		shell = options_get_string(s->options, "default-shell");
548 	else
549 		shell = options_get_string(global_s_options, "default-shell");
550 	if (!checkshell(shell))
551 		shell = _PATH_BSHELL;
552 	shellsize = strlen(shell) + 1;
553 
554 	msg = xmalloc(cmdsize + shellsize);
555 	memcpy(msg, cmd, cmdsize);
556 	memcpy(msg + cmdsize, shell, shellsize);
557 
558 	proc_send(c->peer, MSG_EXEC, -1, msg, cmdsize + shellsize);
559 	free(msg);
560 }
561 
562 /* Check for mouse keys. */
563 static key_code
564 server_client_check_mouse(struct client *c, struct key_event *event)
565 {
566 	struct mouse_event	*m = &event->m;
567 	struct session		*s = c->session;
568 	struct winlink		*wl;
569 	struct window_pane	*wp;
570 	u_int			 x, y, b, sx, sy, px, py;
571 	int			 ignore = 0;
572 	key_code		 key;
573 	struct timeval		 tv;
574 	struct style_range	*sr;
575 	enum { NOTYPE,
576 	       MOVE,
577 	       DOWN,
578 	       UP,
579 	       DRAG,
580 	       WHEEL,
581 	       SECOND,
582 	       DOUBLE,
583 	       TRIPLE } type = NOTYPE;
584 	enum { NOWHERE,
585 	       PANE,
586 	       STATUS,
587 	       STATUS_LEFT,
588 	       STATUS_RIGHT,
589 	       STATUS_DEFAULT,
590 	       BORDER } where = NOWHERE;
591 
592 	log_debug("%s mouse %02x at %u,%u (last %u,%u) (%d)", c->name, m->b,
593 	    m->x, m->y, m->lx, m->ly, c->tty.mouse_drag_flag);
594 
595 	/* What type of event is this? */
596 	if (event->key == KEYC_DOUBLECLICK) {
597 		type = DOUBLE;
598 		x = m->x, y = m->y, b = m->b;
599 		ignore = 1;
600 		log_debug("double-click at %u,%u", x, y);
601 	} else if ((m->sgr_type != ' ' &&
602 	    MOUSE_DRAG(m->sgr_b) &&
603 	    MOUSE_RELEASE(m->sgr_b)) ||
604 	    (m->sgr_type == ' ' &&
605 	    MOUSE_DRAG(m->b) &&
606 	    MOUSE_RELEASE(m->b) &&
607 	    MOUSE_RELEASE(m->lb))) {
608 		type = MOVE;
609 		x = m->x, y = m->y, b = 0;
610 		log_debug("move at %u,%u", x, y);
611 	} else if (MOUSE_DRAG(m->b)) {
612 		type = DRAG;
613 		if (c->tty.mouse_drag_flag) {
614 			x = m->x, y = m->y, b = m->b;
615 			if (x == m->lx && y == m->ly)
616 				return (KEYC_UNKNOWN);
617 			log_debug("drag update at %u,%u", x, y);
618 		} else {
619 			x = m->lx, y = m->ly, b = m->lb;
620 			log_debug("drag start at %u,%u", x, y);
621 		}
622 	} else if (MOUSE_WHEEL(m->b)) {
623 		type = WHEEL;
624 		x = m->x, y = m->y, b = m->b;
625 		log_debug("wheel at %u,%u", x, y);
626 	} else if (MOUSE_RELEASE(m->b)) {
627 		type = UP;
628 		x = m->x, y = m->y, b = m->lb;
629 		log_debug("up at %u,%u", x, y);
630 	} else {
631 		if (c->flags & CLIENT_DOUBLECLICK) {
632 			evtimer_del(&c->click_timer);
633 			c->flags &= ~CLIENT_DOUBLECLICK;
634 			if (m->b == c->click_button) {
635 				type = SECOND;
636 				x = m->x, y = m->y, b = m->b;
637 				log_debug("second-click at %u,%u", x, y);
638 				c->flags |= CLIENT_TRIPLECLICK;
639 			}
640 		} else if (c->flags & CLIENT_TRIPLECLICK) {
641 			evtimer_del(&c->click_timer);
642 			c->flags &= ~CLIENT_TRIPLECLICK;
643 			if (m->b == c->click_button) {
644 				type = TRIPLE;
645 				x = m->x, y = m->y, b = m->b;
646 				log_debug("triple-click at %u,%u", x, y);
647 				goto have_event;
648 			}
649 		} else {
650 			type = DOWN;
651 			x = m->x, y = m->y, b = m->b;
652 			log_debug("down at %u,%u", x, y);
653 			c->flags |= CLIENT_DOUBLECLICK;
654 		}
655 
656 		if (KEYC_CLICK_TIMEOUT != 0) {
657 			memcpy(&c->click_event, m, sizeof c->click_event);
658 			c->click_button = m->b;
659 
660 			log_debug("click timer started");
661 			tv.tv_sec = KEYC_CLICK_TIMEOUT / 1000;
662 			tv.tv_usec = (KEYC_CLICK_TIMEOUT % 1000) * 1000L;
663 			evtimer_del(&c->click_timer);
664 			evtimer_add(&c->click_timer, &tv);
665 		}
666 	}
667 
668 have_event:
669 	if (type == NOTYPE)
670 		return (KEYC_UNKNOWN);
671 
672 	/* Save the session. */
673 	m->s = s->id;
674 	m->w = -1;
675 	m->ignore = ignore;
676 
677 	/* Is this on the status line? */
678 	m->statusat = status_at_line(c);
679 	m->statuslines = status_line_size(c);
680 	if (m->statusat != -1 &&
681 	    y >= (u_int)m->statusat &&
682 	    y < m->statusat + m->statuslines) {
683 		sr = status_get_range(c, x, y - m->statusat);
684 		if (sr == NULL) {
685 			where = STATUS_DEFAULT;
686 		} else {
687 			switch (sr->type) {
688 			case STYLE_RANGE_NONE:
689 				return (KEYC_UNKNOWN);
690 			case STYLE_RANGE_LEFT:
691 				where = STATUS_LEFT;
692 				break;
693 			case STYLE_RANGE_RIGHT:
694 				where = STATUS_RIGHT;
695 				break;
696 			case STYLE_RANGE_WINDOW:
697 				wl = winlink_find_by_index(&s->windows,
698 				    sr->argument);
699 				if (wl == NULL)
700 					return (KEYC_UNKNOWN);
701 				m->w = wl->window->id;
702 
703 				where = STATUS;
704 				break;
705 			}
706 		}
707 	}
708 
709 	/* Not on status line. Adjust position and check for border or pane. */
710 	if (where == NOWHERE) {
711 		px = x;
712 		if (m->statusat == 0 && y >= m->statuslines)
713 			py = y - m->statuslines;
714 		else if (m->statusat > 0 && y >= (u_int)m->statusat)
715 			py = m->statusat - 1;
716 		else
717 			py = y;
718 
719 		tty_window_offset(&c->tty, &m->ox, &m->oy, &sx, &sy);
720 		log_debug("mouse window @%u at %u,%u (%ux%u)",
721 		    s->curw->window->id, m->ox, m->oy, sx, sy);
722 		if (px > sx || py > sy)
723 			return (KEYC_UNKNOWN);
724 		px = px + m->ox;
725 		py = py + m->oy;
726 
727 		/* Try the pane borders if not zoomed. */
728 		if (~s->curw->window->flags & WINDOW_ZOOMED) {
729 			TAILQ_FOREACH(wp, &s->curw->window->panes, entry) {
730 				if ((wp->xoff + wp->sx == px &&
731 				    wp->yoff <= 1 + py &&
732 				    wp->yoff + wp->sy >= py) ||
733 				    (wp->yoff + wp->sy == py &&
734 				    wp->xoff <= 1 + px &&
735 				    wp->xoff + wp->sx >= px))
736 					break;
737 			}
738 			if (wp != NULL)
739 				where = BORDER;
740 		}
741 
742 		/* Otherwise try inside the pane. */
743 		if (where == NOWHERE) {
744 			wp = window_get_active_at(s->curw->window, px, py);
745 			if (wp != NULL)
746 				where = PANE;
747 			else
748 				return (KEYC_UNKNOWN);
749 		}
750 		if (where == PANE)
751 			log_debug("mouse %u,%u on pane %%%u", x, y, wp->id);
752 		else if (where == BORDER)
753 			log_debug("mouse on pane %%%u border", wp->id);
754 		m->wp = wp->id;
755 		m->w = wp->window->id;
756 	} else
757 		m->wp = -1;
758 
759 	/* Stop dragging if needed. */
760 	if (type != DRAG && type != WHEEL && c->tty.mouse_drag_flag != 0) {
761 		if (c->tty.mouse_drag_release != NULL)
762 			c->tty.mouse_drag_release(c, m);
763 
764 		c->tty.mouse_drag_update = NULL;
765 		c->tty.mouse_drag_release = NULL;
766 
767 		/*
768 		 * End a mouse drag by passing a MouseDragEnd key corresponding
769 		 * to the button that started the drag.
770 		 */
771 		switch (c->tty.mouse_drag_flag - 1) {
772 		case MOUSE_BUTTON_1:
773 			if (where == PANE)
774 				key = KEYC_MOUSEDRAGEND1_PANE;
775 			if (where == STATUS)
776 				key = KEYC_MOUSEDRAGEND1_STATUS;
777 			if (where == STATUS_LEFT)
778 				key = KEYC_MOUSEDRAGEND1_STATUS_LEFT;
779 			if (where == STATUS_RIGHT)
780 				key = KEYC_MOUSEDRAGEND1_STATUS_RIGHT;
781 			if (where == STATUS_DEFAULT)
782 				key = KEYC_MOUSEDRAGEND1_STATUS_DEFAULT;
783 			if (where == BORDER)
784 				key = KEYC_MOUSEDRAGEND1_BORDER;
785 			break;
786 		case MOUSE_BUTTON_2:
787 			if (where == PANE)
788 				key = KEYC_MOUSEDRAGEND2_PANE;
789 			if (where == STATUS)
790 				key = KEYC_MOUSEDRAGEND2_STATUS;
791 			if (where == STATUS_LEFT)
792 				key = KEYC_MOUSEDRAGEND2_STATUS_LEFT;
793 			if (where == STATUS_RIGHT)
794 				key = KEYC_MOUSEDRAGEND2_STATUS_RIGHT;
795 			if (where == STATUS_DEFAULT)
796 				key = KEYC_MOUSEDRAGEND2_STATUS_DEFAULT;
797 			if (where == BORDER)
798 				key = KEYC_MOUSEDRAGEND2_BORDER;
799 			break;
800 		case MOUSE_BUTTON_3:
801 			if (where == PANE)
802 				key = KEYC_MOUSEDRAGEND3_PANE;
803 			if (where == STATUS)
804 				key = KEYC_MOUSEDRAGEND3_STATUS;
805 			if (where == STATUS_LEFT)
806 				key = KEYC_MOUSEDRAGEND3_STATUS_LEFT;
807 			if (where == STATUS_RIGHT)
808 				key = KEYC_MOUSEDRAGEND3_STATUS_RIGHT;
809 			if (where == STATUS_DEFAULT)
810 				key = KEYC_MOUSEDRAGEND3_STATUS_DEFAULT;
811 			if (where == BORDER)
812 				key = KEYC_MOUSEDRAGEND3_BORDER;
813 			break;
814 		case MOUSE_BUTTON_6:
815 			if (where == PANE)
816 				key = KEYC_MOUSEDRAGEND6_PANE;
817 			if (where == STATUS)
818 				key = KEYC_MOUSEDRAGEND6_STATUS;
819 			if (where == STATUS_LEFT)
820 				key = KEYC_MOUSEDRAGEND6_STATUS_LEFT;
821 			if (where == STATUS_RIGHT)
822 				key = KEYC_MOUSEDRAGEND6_STATUS_RIGHT;
823 			if (where == STATUS_DEFAULT)
824 				key = KEYC_MOUSEDRAGEND6_STATUS_DEFAULT;
825 			if (where == BORDER)
826 				key = KEYC_MOUSEDRAGEND6_BORDER;
827 			break;
828 		case MOUSE_BUTTON_7:
829 			if (where == PANE)
830 				key = KEYC_MOUSEDRAGEND7_PANE;
831 			if (where == STATUS)
832 				key = KEYC_MOUSEDRAGEND7_STATUS;
833 			if (where == STATUS_LEFT)
834 				key = KEYC_MOUSEDRAGEND7_STATUS_LEFT;
835 			if (where == STATUS_RIGHT)
836 				key = KEYC_MOUSEDRAGEND7_STATUS_RIGHT;
837 			if (where == STATUS_DEFAULT)
838 				key = KEYC_MOUSEDRAGEND7_STATUS_DEFAULT;
839 			if (where == BORDER)
840 				key = KEYC_MOUSEDRAGEND7_BORDER;
841 			break;
842 		case MOUSE_BUTTON_8:
843 			if (where == PANE)
844 				key = KEYC_MOUSEDRAGEND8_PANE;
845 			if (where == STATUS)
846 				key = KEYC_MOUSEDRAGEND8_STATUS;
847 			if (where == STATUS_LEFT)
848 				key = KEYC_MOUSEDRAGEND8_STATUS_LEFT;
849 			if (where == STATUS_RIGHT)
850 				key = KEYC_MOUSEDRAGEND8_STATUS_RIGHT;
851 			if (where == STATUS_DEFAULT)
852 				key = KEYC_MOUSEDRAGEND8_STATUS_DEFAULT;
853 			if (where == BORDER)
854 				key = KEYC_MOUSEDRAGEND8_BORDER;
855 			break;
856 		case MOUSE_BUTTON_9:
857 			if (where == PANE)
858 				key = KEYC_MOUSEDRAGEND9_PANE;
859 			if (where == STATUS)
860 				key = KEYC_MOUSEDRAGEND9_STATUS;
861 			if (where == STATUS_LEFT)
862 				key = KEYC_MOUSEDRAGEND9_STATUS_LEFT;
863 			if (where == STATUS_RIGHT)
864 				key = KEYC_MOUSEDRAGEND9_STATUS_RIGHT;
865 			if (where == STATUS_DEFAULT)
866 				key = KEYC_MOUSEDRAGEND9_STATUS_DEFAULT;
867 			if (where == BORDER)
868 				key = KEYC_MOUSEDRAGEND9_BORDER;
869 			break;
870 		case MOUSE_BUTTON_10:
871 			if (where == PANE)
872 				key = KEYC_MOUSEDRAGEND10_PANE;
873 			if (where == STATUS)
874 				key = KEYC_MOUSEDRAGEND10_STATUS;
875 			if (where == STATUS_LEFT)
876 				key = KEYC_MOUSEDRAGEND10_STATUS_LEFT;
877 			if (where == STATUS_RIGHT)
878 				key = KEYC_MOUSEDRAGEND10_STATUS_RIGHT;
879 			if (where == STATUS_DEFAULT)
880 				key = KEYC_MOUSEDRAGEND10_STATUS_DEFAULT;
881 			if (where == BORDER)
882 				key = KEYC_MOUSEDRAGEND10_BORDER;
883 			break;
884 		case MOUSE_BUTTON_11:
885 			if (where == PANE)
886 				key = KEYC_MOUSEDRAGEND11_PANE;
887 			if (where == STATUS)
888 				key = KEYC_MOUSEDRAGEND11_STATUS;
889 			if (where == STATUS_LEFT)
890 				key = KEYC_MOUSEDRAGEND11_STATUS_LEFT;
891 			if (where == STATUS_RIGHT)
892 				key = KEYC_MOUSEDRAGEND11_STATUS_RIGHT;
893 			if (where == STATUS_DEFAULT)
894 				key = KEYC_MOUSEDRAGEND11_STATUS_DEFAULT;
895 			if (where == BORDER)
896 				key = KEYC_MOUSEDRAGEND11_BORDER;
897 			break;
898 		default:
899 			key = KEYC_MOUSE;
900 			break;
901 		}
902 		c->tty.mouse_drag_flag = 0;
903 		goto out;
904 	}
905 
906 	/* Convert to a key binding. */
907 	key = KEYC_UNKNOWN;
908 	switch (type) {
909 	case NOTYPE:
910 		break;
911 	case MOVE:
912 		if (where == PANE)
913 			key = KEYC_MOUSEMOVE_PANE;
914 		if (where == STATUS)
915 			key = KEYC_MOUSEMOVE_STATUS;
916 		if (where == STATUS_LEFT)
917 			key = KEYC_MOUSEMOVE_STATUS_LEFT;
918 		if (where == STATUS_RIGHT)
919 			key = KEYC_MOUSEMOVE_STATUS_RIGHT;
920 		if (where == STATUS_DEFAULT)
921 			key = KEYC_MOUSEMOVE_STATUS_DEFAULT;
922 		if (where == BORDER)
923 			key = KEYC_MOUSEMOVE_BORDER;
924 		break;
925 	case DRAG:
926 		if (c->tty.mouse_drag_update != NULL)
927 			key = KEYC_DRAGGING;
928 		else {
929 			switch (MOUSE_BUTTONS(b)) {
930 			case MOUSE_BUTTON_1:
931 				if (where == PANE)
932 					key = KEYC_MOUSEDRAG1_PANE;
933 				if (where == STATUS)
934 					key = KEYC_MOUSEDRAG1_STATUS;
935 				if (where == STATUS_LEFT)
936 					key = KEYC_MOUSEDRAG1_STATUS_LEFT;
937 				if (where == STATUS_RIGHT)
938 					key = KEYC_MOUSEDRAG1_STATUS_RIGHT;
939 				if (where == STATUS_DEFAULT)
940 					key = KEYC_MOUSEDRAG1_STATUS_DEFAULT;
941 				if (where == BORDER)
942 					key = KEYC_MOUSEDRAG1_BORDER;
943 				break;
944 			case MOUSE_BUTTON_2:
945 				if (where == PANE)
946 					key = KEYC_MOUSEDRAG2_PANE;
947 				if (where == STATUS)
948 					key = KEYC_MOUSEDRAG2_STATUS;
949 				if (where == STATUS_LEFT)
950 					key = KEYC_MOUSEDRAG2_STATUS_LEFT;
951 				if (where == STATUS_RIGHT)
952 					key = KEYC_MOUSEDRAG2_STATUS_RIGHT;
953 				if (where == STATUS_DEFAULT)
954 					key = KEYC_MOUSEDRAG2_STATUS_DEFAULT;
955 				if (where == BORDER)
956 					key = KEYC_MOUSEDRAG2_BORDER;
957 				break;
958 			case MOUSE_BUTTON_3:
959 				if (where == PANE)
960 					key = KEYC_MOUSEDRAG3_PANE;
961 				if (where == STATUS)
962 					key = KEYC_MOUSEDRAG3_STATUS;
963 				if (where == STATUS_LEFT)
964 					key = KEYC_MOUSEDRAG3_STATUS_LEFT;
965 				if (where == STATUS_RIGHT)
966 					key = KEYC_MOUSEDRAG3_STATUS_RIGHT;
967 				if (where == STATUS_DEFAULT)
968 					key = KEYC_MOUSEDRAG3_STATUS_DEFAULT;
969 				if (where == BORDER)
970 					key = KEYC_MOUSEDRAG3_BORDER;
971 				break;
972 			case MOUSE_BUTTON_6:
973 				if (where == PANE)
974 					key = KEYC_MOUSEDRAG6_PANE;
975 				if (where == STATUS)
976 					key = KEYC_MOUSEDRAG6_STATUS;
977 				if (where == STATUS_LEFT)
978 					key = KEYC_MOUSEDRAG6_STATUS_LEFT;
979 				if (where == STATUS_RIGHT)
980 					key = KEYC_MOUSEDRAG6_STATUS_RIGHT;
981 				if (where == STATUS_DEFAULT)
982 					key = KEYC_MOUSEDRAG6_STATUS_DEFAULT;
983 				if (where == BORDER)
984 					key = KEYC_MOUSEDRAG6_BORDER;
985 				break;
986 			case MOUSE_BUTTON_7:
987 				if (where == PANE)
988 					key = KEYC_MOUSEDRAG7_PANE;
989 				if (where == STATUS)
990 					key = KEYC_MOUSEDRAG7_STATUS;
991 				if (where == STATUS_LEFT)
992 					key = KEYC_MOUSEDRAG7_STATUS_LEFT;
993 				if (where == STATUS_RIGHT)
994 					key = KEYC_MOUSEDRAG7_STATUS_RIGHT;
995 				if (where == STATUS_DEFAULT)
996 					key = KEYC_MOUSEDRAG7_STATUS_DEFAULT;
997 				if (where == BORDER)
998 					key = KEYC_MOUSEDRAG7_BORDER;
999 				break;
1000 			case MOUSE_BUTTON_8:
1001 				if (where == PANE)
1002 					key = KEYC_MOUSEDRAG8_PANE;
1003 				if (where == STATUS)
1004 					key = KEYC_MOUSEDRAG8_STATUS;
1005 				if (where == STATUS_LEFT)
1006 					key = KEYC_MOUSEDRAG8_STATUS_LEFT;
1007 				if (where == STATUS_RIGHT)
1008 					key = KEYC_MOUSEDRAG8_STATUS_RIGHT;
1009 				if (where == STATUS_DEFAULT)
1010 					key = KEYC_MOUSEDRAG8_STATUS_DEFAULT;
1011 				if (where == BORDER)
1012 					key = KEYC_MOUSEDRAG8_BORDER;
1013 				break;
1014 			case MOUSE_BUTTON_9:
1015 				if (where == PANE)
1016 					key = KEYC_MOUSEDRAG9_PANE;
1017 				if (where == STATUS)
1018 					key = KEYC_MOUSEDRAG9_STATUS;
1019 				if (where == STATUS_LEFT)
1020 					key = KEYC_MOUSEDRAG9_STATUS_LEFT;
1021 				if (where == STATUS_RIGHT)
1022 					key = KEYC_MOUSEDRAG9_STATUS_RIGHT;
1023 				if (where == STATUS_DEFAULT)
1024 					key = KEYC_MOUSEDRAG9_STATUS_DEFAULT;
1025 				if (where == BORDER)
1026 					key = KEYC_MOUSEDRAG9_BORDER;
1027 				break;
1028 			case MOUSE_BUTTON_10:
1029 				if (where == PANE)
1030 					key = KEYC_MOUSEDRAG10_PANE;
1031 				if (where == STATUS)
1032 					key = KEYC_MOUSEDRAG10_STATUS;
1033 				if (where == STATUS_LEFT)
1034 					key = KEYC_MOUSEDRAG10_STATUS_LEFT;
1035 				if (where == STATUS_RIGHT)
1036 					key = KEYC_MOUSEDRAG10_STATUS_RIGHT;
1037 				if (where == STATUS_DEFAULT)
1038 					key = KEYC_MOUSEDRAG10_STATUS_DEFAULT;
1039 				if (where == BORDER)
1040 					key = KEYC_MOUSEDRAG10_BORDER;
1041 				break;
1042 			case MOUSE_BUTTON_11:
1043 				if (where == PANE)
1044 					key = KEYC_MOUSEDRAG11_PANE;
1045 				if (where == STATUS)
1046 					key = KEYC_MOUSEDRAG11_STATUS;
1047 				if (where == STATUS_LEFT)
1048 					key = KEYC_MOUSEDRAG11_STATUS_LEFT;
1049 				if (where == STATUS_RIGHT)
1050 					key = KEYC_MOUSEDRAG11_STATUS_RIGHT;
1051 				if (where == STATUS_DEFAULT)
1052 					key = KEYC_MOUSEDRAG11_STATUS_DEFAULT;
1053 				if (where == BORDER)
1054 					key = KEYC_MOUSEDRAG11_BORDER;
1055 				break;
1056 			}
1057 		}
1058 
1059 		/*
1060 		 * Begin a drag by setting the flag to a non-zero value that
1061 		 * corresponds to the mouse button in use.
1062 		 */
1063 		c->tty.mouse_drag_flag = MOUSE_BUTTONS(b) + 1;
1064 		break;
1065 	case WHEEL:
1066 		if (MOUSE_BUTTONS(b) == MOUSE_WHEEL_UP) {
1067 			if (where == PANE)
1068 				key = KEYC_WHEELUP_PANE;
1069 			if (where == STATUS)
1070 				key = KEYC_WHEELUP_STATUS;
1071 			if (where == STATUS_LEFT)
1072 				key = KEYC_WHEELUP_STATUS_LEFT;
1073 			if (where == STATUS_RIGHT)
1074 				key = KEYC_WHEELUP_STATUS_RIGHT;
1075 			if (where == STATUS_DEFAULT)
1076 				key = KEYC_WHEELUP_STATUS_DEFAULT;
1077 			if (where == BORDER)
1078 				key = KEYC_WHEELUP_BORDER;
1079 		} else {
1080 			if (where == PANE)
1081 				key = KEYC_WHEELDOWN_PANE;
1082 			if (where == STATUS)
1083 				key = KEYC_WHEELDOWN_STATUS;
1084 			if (where == STATUS_LEFT)
1085 				key = KEYC_WHEELDOWN_STATUS_LEFT;
1086 			if (where == STATUS_RIGHT)
1087 				key = KEYC_WHEELDOWN_STATUS_RIGHT;
1088 			if (where == STATUS_DEFAULT)
1089 				key = KEYC_WHEELDOWN_STATUS_DEFAULT;
1090 			if (where == BORDER)
1091 				key = KEYC_WHEELDOWN_BORDER;
1092 		}
1093 		break;
1094 	case UP:
1095 		switch (MOUSE_BUTTONS(b)) {
1096 		case MOUSE_BUTTON_1:
1097 			if (where == PANE)
1098 				key = KEYC_MOUSEUP1_PANE;
1099 			if (where == STATUS)
1100 				key = KEYC_MOUSEUP1_STATUS;
1101 			if (where == STATUS_LEFT)
1102 				key = KEYC_MOUSEUP1_STATUS_LEFT;
1103 			if (where == STATUS_RIGHT)
1104 				key = KEYC_MOUSEUP1_STATUS_RIGHT;
1105 			if (where == STATUS_DEFAULT)
1106 				key = KEYC_MOUSEUP1_STATUS_DEFAULT;
1107 			if (where == BORDER)
1108 				key = KEYC_MOUSEUP1_BORDER;
1109 			break;
1110 		case MOUSE_BUTTON_2:
1111 			if (where == PANE)
1112 				key = KEYC_MOUSEUP2_PANE;
1113 			if (where == STATUS)
1114 				key = KEYC_MOUSEUP2_STATUS;
1115 			if (where == STATUS_LEFT)
1116 				key = KEYC_MOUSEUP2_STATUS_LEFT;
1117 			if (where == STATUS_RIGHT)
1118 				key = KEYC_MOUSEUP2_STATUS_RIGHT;
1119 			if (where == STATUS_DEFAULT)
1120 				key = KEYC_MOUSEUP2_STATUS_DEFAULT;
1121 			if (where == BORDER)
1122 				key = KEYC_MOUSEUP2_BORDER;
1123 			break;
1124 		case MOUSE_BUTTON_3:
1125 			if (where == PANE)
1126 				key = KEYC_MOUSEUP3_PANE;
1127 			if (where == STATUS)
1128 				key = KEYC_MOUSEUP3_STATUS;
1129 			if (where == STATUS_LEFT)
1130 				key = KEYC_MOUSEUP3_STATUS_LEFT;
1131 			if (where == STATUS_RIGHT)
1132 				key = KEYC_MOUSEUP3_STATUS_RIGHT;
1133 			if (where == STATUS_DEFAULT)
1134 				key = KEYC_MOUSEUP3_STATUS_DEFAULT;
1135 			if (where == BORDER)
1136 				key = KEYC_MOUSEUP3_BORDER;
1137 			break;
1138 		case MOUSE_BUTTON_6:
1139 			if (where == PANE)
1140 				key = KEYC_MOUSEUP6_PANE;
1141 			if (where == STATUS)
1142 				key = KEYC_MOUSEUP6_STATUS;
1143 			if (where == STATUS_LEFT)
1144 				key = KEYC_MOUSEUP6_STATUS_LEFT;
1145 			if (where == STATUS_RIGHT)
1146 				key = KEYC_MOUSEUP6_STATUS_RIGHT;
1147 			if (where == STATUS_DEFAULT)
1148 				key = KEYC_MOUSEUP6_STATUS_DEFAULT;
1149 			if (where == BORDER)
1150 				key = KEYC_MOUSEUP6_BORDER;
1151 			break;
1152 		case MOUSE_BUTTON_7:
1153 			if (where == PANE)
1154 				key = KEYC_MOUSEUP7_PANE;
1155 			if (where == STATUS)
1156 				key = KEYC_MOUSEUP7_STATUS;
1157 			if (where == STATUS_LEFT)
1158 				key = KEYC_MOUSEUP7_STATUS_LEFT;
1159 			if (where == STATUS_RIGHT)
1160 				key = KEYC_MOUSEUP7_STATUS_RIGHT;
1161 			if (where == STATUS_DEFAULT)
1162 				key = KEYC_MOUSEUP7_STATUS_DEFAULT;
1163 			if (where == BORDER)
1164 				key = KEYC_MOUSEUP7_BORDER;
1165 			break;
1166 		case MOUSE_BUTTON_8:
1167 			if (where == PANE)
1168 				key = KEYC_MOUSEUP8_PANE;
1169 			if (where == STATUS)
1170 				key = KEYC_MOUSEUP8_STATUS;
1171 			if (where == STATUS_LEFT)
1172 				key = KEYC_MOUSEUP8_STATUS_LEFT;
1173 			if (where == STATUS_RIGHT)
1174 				key = KEYC_MOUSEUP8_STATUS_RIGHT;
1175 			if (where == STATUS_DEFAULT)
1176 				key = KEYC_MOUSEUP8_STATUS_DEFAULT;
1177 			if (where == BORDER)
1178 				key = KEYC_MOUSEUP8_BORDER;
1179 			break;
1180 		case MOUSE_BUTTON_9:
1181 			if (where == PANE)
1182 				key = KEYC_MOUSEUP9_PANE;
1183 			if (where == STATUS)
1184 				key = KEYC_MOUSEUP9_STATUS;
1185 			if (where == STATUS_LEFT)
1186 				key = KEYC_MOUSEUP9_STATUS_LEFT;
1187 			if (where == STATUS_RIGHT)
1188 				key = KEYC_MOUSEUP9_STATUS_RIGHT;
1189 			if (where == STATUS_DEFAULT)
1190 				key = KEYC_MOUSEUP9_STATUS_DEFAULT;
1191 			if (where == BORDER)
1192 				key = KEYC_MOUSEUP9_BORDER;
1193 			break;
1194 		case MOUSE_BUTTON_10:
1195 			if (where == PANE)
1196 				key = KEYC_MOUSEUP1_PANE;
1197 			if (where == STATUS)
1198 				key = KEYC_MOUSEUP1_STATUS;
1199 			if (where == STATUS_LEFT)
1200 				key = KEYC_MOUSEUP1_STATUS_LEFT;
1201 			if (where == STATUS_RIGHT)
1202 				key = KEYC_MOUSEUP1_STATUS_RIGHT;
1203 			if (where == STATUS_DEFAULT)
1204 				key = KEYC_MOUSEUP1_STATUS_DEFAULT;
1205 			if (where == BORDER)
1206 				key = KEYC_MOUSEUP1_BORDER;
1207 			break;
1208 		case MOUSE_BUTTON_11:
1209 			if (where == PANE)
1210 				key = KEYC_MOUSEUP11_PANE;
1211 			if (where == STATUS)
1212 				key = KEYC_MOUSEUP11_STATUS;
1213 			if (where == STATUS_LEFT)
1214 				key = KEYC_MOUSEUP11_STATUS_LEFT;
1215 			if (where == STATUS_RIGHT)
1216 				key = KEYC_MOUSEUP11_STATUS_RIGHT;
1217 			if (where == STATUS_DEFAULT)
1218 				key = KEYC_MOUSEUP11_STATUS_DEFAULT;
1219 			if (where == BORDER)
1220 				key = KEYC_MOUSEUP11_BORDER;
1221 			break;
1222 		}
1223 		break;
1224 	case DOWN:
1225 		switch (MOUSE_BUTTONS(b)) {
1226 		case MOUSE_BUTTON_1:
1227 			if (where == PANE)
1228 				key = KEYC_MOUSEDOWN1_PANE;
1229 			if (where == STATUS)
1230 				key = KEYC_MOUSEDOWN1_STATUS;
1231 			if (where == STATUS_LEFT)
1232 				key = KEYC_MOUSEDOWN1_STATUS_LEFT;
1233 			if (where == STATUS_RIGHT)
1234 				key = KEYC_MOUSEDOWN1_STATUS_RIGHT;
1235 			if (where == STATUS_DEFAULT)
1236 				key = KEYC_MOUSEDOWN1_STATUS_DEFAULT;
1237 			if (where == BORDER)
1238 				key = KEYC_MOUSEDOWN1_BORDER;
1239 			break;
1240 		case MOUSE_BUTTON_2:
1241 			if (where == PANE)
1242 				key = KEYC_MOUSEDOWN2_PANE;
1243 			if (where == STATUS)
1244 				key = KEYC_MOUSEDOWN2_STATUS;
1245 			if (where == STATUS_LEFT)
1246 				key = KEYC_MOUSEDOWN2_STATUS_LEFT;
1247 			if (where == STATUS_RIGHT)
1248 				key = KEYC_MOUSEDOWN2_STATUS_RIGHT;
1249 			if (where == STATUS_DEFAULT)
1250 				key = KEYC_MOUSEDOWN2_STATUS_DEFAULT;
1251 			if (where == BORDER)
1252 				key = KEYC_MOUSEDOWN2_BORDER;
1253 			break;
1254 		case MOUSE_BUTTON_3:
1255 			if (where == PANE)
1256 				key = KEYC_MOUSEDOWN3_PANE;
1257 			if (where == STATUS)
1258 				key = KEYC_MOUSEDOWN3_STATUS;
1259 			if (where == STATUS_LEFT)
1260 				key = KEYC_MOUSEDOWN3_STATUS_LEFT;
1261 			if (where == STATUS_RIGHT)
1262 				key = KEYC_MOUSEDOWN3_STATUS_RIGHT;
1263 			if (where == STATUS_DEFAULT)
1264 				key = KEYC_MOUSEDOWN3_STATUS_DEFAULT;
1265 			if (where == BORDER)
1266 				key = KEYC_MOUSEDOWN3_BORDER;
1267 			break;
1268 		case MOUSE_BUTTON_6:
1269 			if (where == PANE)
1270 				key = KEYC_MOUSEDOWN6_PANE;
1271 			if (where == STATUS)
1272 				key = KEYC_MOUSEDOWN6_STATUS;
1273 			if (where == STATUS_LEFT)
1274 				key = KEYC_MOUSEDOWN6_STATUS_LEFT;
1275 			if (where == STATUS_RIGHT)
1276 				key = KEYC_MOUSEDOWN6_STATUS_RIGHT;
1277 			if (where == STATUS_DEFAULT)
1278 				key = KEYC_MOUSEDOWN6_STATUS_DEFAULT;
1279 			if (where == BORDER)
1280 				key = KEYC_MOUSEDOWN6_BORDER;
1281 			break;
1282 		case MOUSE_BUTTON_7:
1283 			if (where == PANE)
1284 				key = KEYC_MOUSEDOWN7_PANE;
1285 			if (where == STATUS)
1286 				key = KEYC_MOUSEDOWN7_STATUS;
1287 			if (where == STATUS_LEFT)
1288 				key = KEYC_MOUSEDOWN7_STATUS_LEFT;
1289 			if (where == STATUS_RIGHT)
1290 				key = KEYC_MOUSEDOWN7_STATUS_RIGHT;
1291 			if (where == STATUS_DEFAULT)
1292 				key = KEYC_MOUSEDOWN7_STATUS_DEFAULT;
1293 			if (where == BORDER)
1294 				key = KEYC_MOUSEDOWN7_BORDER;
1295 			break;
1296 		case MOUSE_BUTTON_8:
1297 			if (where == PANE)
1298 				key = KEYC_MOUSEDOWN8_PANE;
1299 			if (where == STATUS)
1300 				key = KEYC_MOUSEDOWN8_STATUS;
1301 			if (where == STATUS_LEFT)
1302 				key = KEYC_MOUSEDOWN8_STATUS_LEFT;
1303 			if (where == STATUS_RIGHT)
1304 				key = KEYC_MOUSEDOWN8_STATUS_RIGHT;
1305 			if (where == STATUS_DEFAULT)
1306 				key = KEYC_MOUSEDOWN8_STATUS_DEFAULT;
1307 			if (where == BORDER)
1308 				key = KEYC_MOUSEDOWN8_BORDER;
1309 			break;
1310 		case MOUSE_BUTTON_9:
1311 			if (where == PANE)
1312 				key = KEYC_MOUSEDOWN9_PANE;
1313 			if (where == STATUS)
1314 				key = KEYC_MOUSEDOWN9_STATUS;
1315 			if (where == STATUS_LEFT)
1316 				key = KEYC_MOUSEDOWN9_STATUS_LEFT;
1317 			if (where == STATUS_RIGHT)
1318 				key = KEYC_MOUSEDOWN9_STATUS_RIGHT;
1319 			if (where == STATUS_DEFAULT)
1320 				key = KEYC_MOUSEDOWN9_STATUS_DEFAULT;
1321 			if (where == BORDER)
1322 				key = KEYC_MOUSEDOWN9_BORDER;
1323 			break;
1324 		case MOUSE_BUTTON_10:
1325 			if (where == PANE)
1326 				key = KEYC_MOUSEDOWN10_PANE;
1327 			if (where == STATUS)
1328 				key = KEYC_MOUSEDOWN10_STATUS;
1329 			if (where == STATUS_LEFT)
1330 				key = KEYC_MOUSEDOWN10_STATUS_LEFT;
1331 			if (where == STATUS_RIGHT)
1332 				key = KEYC_MOUSEDOWN10_STATUS_RIGHT;
1333 			if (where == STATUS_DEFAULT)
1334 				key = KEYC_MOUSEDOWN10_STATUS_DEFAULT;
1335 			if (where == BORDER)
1336 				key = KEYC_MOUSEDOWN10_BORDER;
1337 			break;
1338 		case MOUSE_BUTTON_11:
1339 			if (where == PANE)
1340 				key = KEYC_MOUSEDOWN11_PANE;
1341 			if (where == STATUS)
1342 				key = KEYC_MOUSEDOWN11_STATUS;
1343 			if (where == STATUS_LEFT)
1344 				key = KEYC_MOUSEDOWN11_STATUS_LEFT;
1345 			if (where == STATUS_RIGHT)
1346 				key = KEYC_MOUSEDOWN11_STATUS_RIGHT;
1347 			if (where == STATUS_DEFAULT)
1348 				key = KEYC_MOUSEDOWN11_STATUS_DEFAULT;
1349 			if (where == BORDER)
1350 				key = KEYC_MOUSEDOWN11_BORDER;
1351 			break;
1352 		}
1353 		break;
1354 	case SECOND:
1355 		switch (MOUSE_BUTTONS(b)) {
1356 		case MOUSE_BUTTON_1:
1357 			if (where == PANE)
1358 				key = KEYC_SECONDCLICK1_PANE;
1359 			if (where == STATUS)
1360 				key = KEYC_SECONDCLICK1_STATUS;
1361 			if (where == STATUS_LEFT)
1362 				key = KEYC_SECONDCLICK1_STATUS_LEFT;
1363 			if (where == STATUS_RIGHT)
1364 				key = KEYC_SECONDCLICK1_STATUS_RIGHT;
1365 			if (where == STATUS_DEFAULT)
1366 				key = KEYC_SECONDCLICK1_STATUS_DEFAULT;
1367 			if (where == BORDER)
1368 				key = KEYC_SECONDCLICK1_BORDER;
1369 			break;
1370 		case MOUSE_BUTTON_2:
1371 			if (where == PANE)
1372 				key = KEYC_SECONDCLICK2_PANE;
1373 			if (where == STATUS)
1374 				key = KEYC_SECONDCLICK2_STATUS;
1375 			if (where == STATUS_LEFT)
1376 				key = KEYC_SECONDCLICK2_STATUS_LEFT;
1377 			if (where == STATUS_RIGHT)
1378 				key = KEYC_SECONDCLICK2_STATUS_RIGHT;
1379 			if (where == STATUS_DEFAULT)
1380 				key = KEYC_SECONDCLICK2_STATUS_DEFAULT;
1381 			if (where == BORDER)
1382 				key = KEYC_SECONDCLICK2_BORDER;
1383 			break;
1384 		case MOUSE_BUTTON_3:
1385 			if (where == PANE)
1386 				key = KEYC_SECONDCLICK3_PANE;
1387 			if (where == STATUS)
1388 				key = KEYC_SECONDCLICK3_STATUS;
1389 			if (where == STATUS_LEFT)
1390 				key = KEYC_SECONDCLICK3_STATUS_LEFT;
1391 			if (where == STATUS_RIGHT)
1392 				key = KEYC_SECONDCLICK3_STATUS_RIGHT;
1393 			if (where == STATUS_DEFAULT)
1394 				key = KEYC_SECONDCLICK3_STATUS_DEFAULT;
1395 			if (where == BORDER)
1396 				key = KEYC_SECONDCLICK3_BORDER;
1397 			break;
1398 		case MOUSE_BUTTON_6:
1399 			if (where == PANE)
1400 				key = KEYC_SECONDCLICK6_PANE;
1401 			if (where == STATUS)
1402 				key = KEYC_SECONDCLICK6_STATUS;
1403 			if (where == STATUS_LEFT)
1404 				key = KEYC_SECONDCLICK6_STATUS_LEFT;
1405 			if (where == STATUS_RIGHT)
1406 				key = KEYC_SECONDCLICK6_STATUS_RIGHT;
1407 			if (where == STATUS_DEFAULT)
1408 				key = KEYC_SECONDCLICK6_STATUS_DEFAULT;
1409 			if (where == BORDER)
1410 				key = KEYC_SECONDCLICK6_BORDER;
1411 			break;
1412 		case MOUSE_BUTTON_7:
1413 			if (where == PANE)
1414 				key = KEYC_SECONDCLICK7_PANE;
1415 			if (where == STATUS)
1416 				key = KEYC_SECONDCLICK7_STATUS;
1417 			if (where == STATUS_LEFT)
1418 				key = KEYC_SECONDCLICK7_STATUS_LEFT;
1419 			if (where == STATUS_RIGHT)
1420 				key = KEYC_SECONDCLICK7_STATUS_RIGHT;
1421 			if (where == STATUS_DEFAULT)
1422 				key = KEYC_SECONDCLICK7_STATUS_DEFAULT;
1423 			if (where == BORDER)
1424 				key = KEYC_SECONDCLICK7_BORDER;
1425 			break;
1426 		case MOUSE_BUTTON_8:
1427 			if (where == PANE)
1428 				key = KEYC_SECONDCLICK8_PANE;
1429 			if (where == STATUS)
1430 				key = KEYC_SECONDCLICK8_STATUS;
1431 			if (where == STATUS_LEFT)
1432 				key = KEYC_SECONDCLICK8_STATUS_LEFT;
1433 			if (where == STATUS_RIGHT)
1434 				key = KEYC_SECONDCLICK8_STATUS_RIGHT;
1435 			if (where == STATUS_DEFAULT)
1436 				key = KEYC_SECONDCLICK8_STATUS_DEFAULT;
1437 			if (where == BORDER)
1438 				key = KEYC_SECONDCLICK8_BORDER;
1439 			break;
1440 		case MOUSE_BUTTON_9:
1441 			if (where == PANE)
1442 				key = KEYC_SECONDCLICK9_PANE;
1443 			if (where == STATUS)
1444 				key = KEYC_SECONDCLICK9_STATUS;
1445 			if (where == STATUS_LEFT)
1446 				key = KEYC_SECONDCLICK9_STATUS_LEFT;
1447 			if (where == STATUS_RIGHT)
1448 				key = KEYC_SECONDCLICK9_STATUS_RIGHT;
1449 			if (where == STATUS_DEFAULT)
1450 				key = KEYC_SECONDCLICK9_STATUS_DEFAULT;
1451 			if (where == BORDER)
1452 				key = KEYC_SECONDCLICK9_BORDER;
1453 			break;
1454 		case MOUSE_BUTTON_10:
1455 			if (where == PANE)
1456 				key = KEYC_SECONDCLICK10_PANE;
1457 			if (where == STATUS)
1458 				key = KEYC_SECONDCLICK10_STATUS;
1459 			if (where == STATUS_LEFT)
1460 				key = KEYC_SECONDCLICK10_STATUS_LEFT;
1461 			if (where == STATUS_RIGHT)
1462 				key = KEYC_SECONDCLICK10_STATUS_RIGHT;
1463 			if (where == STATUS_DEFAULT)
1464 				key = KEYC_SECONDCLICK10_STATUS_DEFAULT;
1465 			if (where == BORDER)
1466 				key = KEYC_SECONDCLICK10_BORDER;
1467 			break;
1468 		case MOUSE_BUTTON_11:
1469 			if (where == PANE)
1470 				key = KEYC_SECONDCLICK11_PANE;
1471 			if (where == STATUS)
1472 				key = KEYC_SECONDCLICK11_STATUS;
1473 			if (where == STATUS_LEFT)
1474 				key = KEYC_SECONDCLICK11_STATUS_LEFT;
1475 			if (where == STATUS_RIGHT)
1476 				key = KEYC_SECONDCLICK11_STATUS_RIGHT;
1477 			if (where == STATUS_DEFAULT)
1478 				key = KEYC_SECONDCLICK11_STATUS_DEFAULT;
1479 			if (where == BORDER)
1480 				key = KEYC_SECONDCLICK11_BORDER;
1481 			break;
1482 		}
1483 		break;
1484 	case DOUBLE:
1485 		switch (MOUSE_BUTTONS(b)) {
1486 		case MOUSE_BUTTON_1:
1487 			if (where == PANE)
1488 				key = KEYC_DOUBLECLICK1_PANE;
1489 			if (where == STATUS)
1490 				key = KEYC_DOUBLECLICK1_STATUS;
1491 			if (where == STATUS_LEFT)
1492 				key = KEYC_DOUBLECLICK1_STATUS_LEFT;
1493 			if (where == STATUS_RIGHT)
1494 				key = KEYC_DOUBLECLICK1_STATUS_RIGHT;
1495 			if (where == STATUS_DEFAULT)
1496 				key = KEYC_DOUBLECLICK1_STATUS_DEFAULT;
1497 			if (where == BORDER)
1498 				key = KEYC_DOUBLECLICK1_BORDER;
1499 			break;
1500 		case MOUSE_BUTTON_2:
1501 			if (where == PANE)
1502 				key = KEYC_DOUBLECLICK2_PANE;
1503 			if (where == STATUS)
1504 				key = KEYC_DOUBLECLICK2_STATUS;
1505 			if (where == STATUS_LEFT)
1506 				key = KEYC_DOUBLECLICK2_STATUS_LEFT;
1507 			if (where == STATUS_RIGHT)
1508 				key = KEYC_DOUBLECLICK2_STATUS_RIGHT;
1509 			if (where == STATUS_DEFAULT)
1510 				key = KEYC_DOUBLECLICK2_STATUS_DEFAULT;
1511 			if (where == BORDER)
1512 				key = KEYC_DOUBLECLICK2_BORDER;
1513 			break;
1514 		case MOUSE_BUTTON_3:
1515 			if (where == PANE)
1516 				key = KEYC_DOUBLECLICK3_PANE;
1517 			if (where == STATUS)
1518 				key = KEYC_DOUBLECLICK3_STATUS;
1519 			if (where == STATUS_LEFT)
1520 				key = KEYC_DOUBLECLICK3_STATUS_LEFT;
1521 			if (where == STATUS_RIGHT)
1522 				key = KEYC_DOUBLECLICK3_STATUS_RIGHT;
1523 			if (where == STATUS_DEFAULT)
1524 				key = KEYC_DOUBLECLICK3_STATUS_DEFAULT;
1525 			if (where == BORDER)
1526 				key = KEYC_DOUBLECLICK3_BORDER;
1527 			break;
1528 		case MOUSE_BUTTON_6:
1529 			if (where == PANE)
1530 				key = KEYC_DOUBLECLICK6_PANE;
1531 			if (where == STATUS)
1532 				key = KEYC_DOUBLECLICK6_STATUS;
1533 			if (where == STATUS_LEFT)
1534 				key = KEYC_DOUBLECLICK6_STATUS_LEFT;
1535 			if (where == STATUS_RIGHT)
1536 				key = KEYC_DOUBLECLICK6_STATUS_RIGHT;
1537 			if (where == STATUS_DEFAULT)
1538 				key = KEYC_DOUBLECLICK6_STATUS_DEFAULT;
1539 			if (where == BORDER)
1540 				key = KEYC_DOUBLECLICK6_BORDER;
1541 			break;
1542 		case MOUSE_BUTTON_7:
1543 			if (where == PANE)
1544 				key = KEYC_DOUBLECLICK7_PANE;
1545 			if (where == STATUS)
1546 				key = KEYC_DOUBLECLICK7_STATUS;
1547 			if (where == STATUS_LEFT)
1548 				key = KEYC_DOUBLECLICK7_STATUS_LEFT;
1549 			if (where == STATUS_RIGHT)
1550 				key = KEYC_DOUBLECLICK7_STATUS_RIGHT;
1551 			if (where == STATUS_DEFAULT)
1552 				key = KEYC_DOUBLECLICK7_STATUS_DEFAULT;
1553 			if (where == BORDER)
1554 				key = KEYC_DOUBLECLICK7_BORDER;
1555 			break;
1556 		case MOUSE_BUTTON_8:
1557 			if (where == PANE)
1558 				key = KEYC_DOUBLECLICK8_PANE;
1559 			if (where == STATUS)
1560 				key = KEYC_DOUBLECLICK8_STATUS;
1561 			if (where == STATUS_LEFT)
1562 				key = KEYC_DOUBLECLICK8_STATUS_LEFT;
1563 			if (where == STATUS_RIGHT)
1564 				key = KEYC_DOUBLECLICK8_STATUS_RIGHT;
1565 			if (where == STATUS_DEFAULT)
1566 				key = KEYC_DOUBLECLICK8_STATUS_DEFAULT;
1567 			if (where == BORDER)
1568 				key = KEYC_DOUBLECLICK8_BORDER;
1569 			break;
1570 		case MOUSE_BUTTON_9:
1571 			if (where == PANE)
1572 				key = KEYC_DOUBLECLICK9_PANE;
1573 			if (where == STATUS)
1574 				key = KEYC_DOUBLECLICK9_STATUS;
1575 			if (where == STATUS_LEFT)
1576 				key = KEYC_DOUBLECLICK9_STATUS_LEFT;
1577 			if (where == STATUS_RIGHT)
1578 				key = KEYC_DOUBLECLICK9_STATUS_RIGHT;
1579 			if (where == STATUS_DEFAULT)
1580 				key = KEYC_DOUBLECLICK9_STATUS_DEFAULT;
1581 			if (where == BORDER)
1582 				key = KEYC_DOUBLECLICK9_BORDER;
1583 			break;
1584 		case MOUSE_BUTTON_10:
1585 			if (where == PANE)
1586 				key = KEYC_DOUBLECLICK10_PANE;
1587 			if (where == STATUS)
1588 				key = KEYC_DOUBLECLICK10_STATUS;
1589 			if (where == STATUS_LEFT)
1590 				key = KEYC_DOUBLECLICK10_STATUS_LEFT;
1591 			if (where == STATUS_RIGHT)
1592 				key = KEYC_DOUBLECLICK10_STATUS_RIGHT;
1593 			if (where == STATUS_DEFAULT)
1594 				key = KEYC_DOUBLECLICK10_STATUS_DEFAULT;
1595 			if (where == BORDER)
1596 				key = KEYC_DOUBLECLICK10_BORDER;
1597 			break;
1598 		case MOUSE_BUTTON_11:
1599 			if (where == PANE)
1600 				key = KEYC_DOUBLECLICK11_PANE;
1601 			if (where == STATUS)
1602 				key = KEYC_DOUBLECLICK11_STATUS;
1603 			if (where == STATUS_LEFT)
1604 				key = KEYC_DOUBLECLICK11_STATUS_LEFT;
1605 			if (where == STATUS_RIGHT)
1606 				key = KEYC_DOUBLECLICK11_STATUS_RIGHT;
1607 			if (where == STATUS_DEFAULT)
1608 				key = KEYC_DOUBLECLICK11_STATUS_DEFAULT;
1609 			if (where == BORDER)
1610 				key = KEYC_DOUBLECLICK11_BORDER;
1611 			break;
1612 		}
1613 		break;
1614 	case TRIPLE:
1615 		switch (MOUSE_BUTTONS(b)) {
1616 		case MOUSE_BUTTON_1:
1617 			if (where == PANE)
1618 				key = KEYC_TRIPLECLICK1_PANE;
1619 			if (where == STATUS)
1620 				key = KEYC_TRIPLECLICK1_STATUS;
1621 			if (where == STATUS_LEFT)
1622 				key = KEYC_TRIPLECLICK1_STATUS_LEFT;
1623 			if (where == STATUS_RIGHT)
1624 				key = KEYC_TRIPLECLICK1_STATUS_RIGHT;
1625 			if (where == STATUS_DEFAULT)
1626 				key = KEYC_TRIPLECLICK1_STATUS_DEFAULT;
1627 			if (where == BORDER)
1628 				key = KEYC_TRIPLECLICK1_BORDER;
1629 			break;
1630 		case MOUSE_BUTTON_2:
1631 			if (where == PANE)
1632 				key = KEYC_TRIPLECLICK2_PANE;
1633 			if (where == STATUS)
1634 				key = KEYC_TRIPLECLICK2_STATUS;
1635 			if (where == STATUS_LEFT)
1636 				key = KEYC_TRIPLECLICK2_STATUS_LEFT;
1637 			if (where == STATUS_RIGHT)
1638 				key = KEYC_TRIPLECLICK2_STATUS_RIGHT;
1639 			if (where == STATUS_DEFAULT)
1640 				key = KEYC_TRIPLECLICK2_STATUS_DEFAULT;
1641 			if (where == BORDER)
1642 				key = KEYC_TRIPLECLICK2_BORDER;
1643 			break;
1644 		case MOUSE_BUTTON_3:
1645 			if (where == PANE)
1646 				key = KEYC_TRIPLECLICK3_PANE;
1647 			if (where == STATUS)
1648 				key = KEYC_TRIPLECLICK3_STATUS;
1649 			if (where == STATUS_LEFT)
1650 				key = KEYC_TRIPLECLICK3_STATUS_LEFT;
1651 			if (where == STATUS_RIGHT)
1652 				key = KEYC_TRIPLECLICK3_STATUS_RIGHT;
1653 			if (where == STATUS_DEFAULT)
1654 				key = KEYC_TRIPLECLICK3_STATUS_DEFAULT;
1655 			if (where == BORDER)
1656 				key = KEYC_TRIPLECLICK3_BORDER;
1657 			break;
1658 		case MOUSE_BUTTON_6:
1659 			if (where == PANE)
1660 				key = KEYC_TRIPLECLICK6_PANE;
1661 			if (where == STATUS)
1662 				key = KEYC_TRIPLECLICK6_STATUS;
1663 			if (where == STATUS_LEFT)
1664 				key = KEYC_TRIPLECLICK6_STATUS_LEFT;
1665 			if (where == STATUS_RIGHT)
1666 				key = KEYC_TRIPLECLICK6_STATUS_RIGHT;
1667 			if (where == STATUS_DEFAULT)
1668 				key = KEYC_TRIPLECLICK6_STATUS_DEFAULT;
1669 			if (where == BORDER)
1670 				key = KEYC_TRIPLECLICK6_BORDER;
1671 			break;
1672 		case MOUSE_BUTTON_7:
1673 			if (where == PANE)
1674 				key = KEYC_TRIPLECLICK7_PANE;
1675 			if (where == STATUS)
1676 				key = KEYC_TRIPLECLICK7_STATUS;
1677 			if (where == STATUS_LEFT)
1678 				key = KEYC_TRIPLECLICK7_STATUS_LEFT;
1679 			if (where == STATUS_RIGHT)
1680 				key = KEYC_TRIPLECLICK7_STATUS_RIGHT;
1681 			if (where == STATUS_DEFAULT)
1682 				key = KEYC_TRIPLECLICK7_STATUS_DEFAULT;
1683 			if (where == BORDER)
1684 				key = KEYC_TRIPLECLICK7_BORDER;
1685 			break;
1686 		case MOUSE_BUTTON_8:
1687 			if (where == PANE)
1688 				key = KEYC_TRIPLECLICK8_PANE;
1689 			if (where == STATUS)
1690 				key = KEYC_TRIPLECLICK8_STATUS;
1691 			if (where == STATUS_LEFT)
1692 				key = KEYC_TRIPLECLICK8_STATUS_LEFT;
1693 			if (where == STATUS_RIGHT)
1694 				key = KEYC_TRIPLECLICK8_STATUS_RIGHT;
1695 			if (where == STATUS_DEFAULT)
1696 				key = KEYC_TRIPLECLICK8_STATUS_DEFAULT;
1697 			if (where == BORDER)
1698 				key = KEYC_TRIPLECLICK8_BORDER;
1699 			break;
1700 		case MOUSE_BUTTON_9:
1701 			if (where == PANE)
1702 				key = KEYC_TRIPLECLICK9_PANE;
1703 			if (where == STATUS)
1704 				key = KEYC_TRIPLECLICK9_STATUS;
1705 			if (where == STATUS_LEFT)
1706 				key = KEYC_TRIPLECLICK9_STATUS_LEFT;
1707 			if (where == STATUS_RIGHT)
1708 				key = KEYC_TRIPLECLICK9_STATUS_RIGHT;
1709 			if (where == STATUS_DEFAULT)
1710 				key = KEYC_TRIPLECLICK9_STATUS_DEFAULT;
1711 			if (where == BORDER)
1712 				key = KEYC_TRIPLECLICK9_BORDER;
1713 			break;
1714 		case MOUSE_BUTTON_10:
1715 			if (where == PANE)
1716 				key = KEYC_TRIPLECLICK10_PANE;
1717 			if (where == STATUS)
1718 				key = KEYC_TRIPLECLICK10_STATUS;
1719 			if (where == STATUS_LEFT)
1720 				key = KEYC_TRIPLECLICK10_STATUS_LEFT;
1721 			if (where == STATUS_RIGHT)
1722 				key = KEYC_TRIPLECLICK10_STATUS_RIGHT;
1723 			if (where == STATUS_DEFAULT)
1724 				key = KEYC_TRIPLECLICK10_STATUS_DEFAULT;
1725 			if (where == BORDER)
1726 				key = KEYC_TRIPLECLICK10_BORDER;
1727 			break;
1728 		case MOUSE_BUTTON_11:
1729 			if (where == PANE)
1730 				key = KEYC_TRIPLECLICK11_PANE;
1731 			if (where == STATUS)
1732 				key = KEYC_TRIPLECLICK11_STATUS;
1733 			if (where == STATUS_LEFT)
1734 				key = KEYC_TRIPLECLICK11_STATUS_LEFT;
1735 			if (where == STATUS_RIGHT)
1736 				key = KEYC_TRIPLECLICK11_STATUS_RIGHT;
1737 			if (where == STATUS_DEFAULT)
1738 				key = KEYC_TRIPLECLICK11_STATUS_DEFAULT;
1739 			if (where == BORDER)
1740 				key = KEYC_TRIPLECLICK11_BORDER;
1741 			break;
1742 		}
1743 		break;
1744 	}
1745 	if (key == KEYC_UNKNOWN)
1746 		return (KEYC_UNKNOWN);
1747 
1748 out:
1749 	/* Apply modifiers if any. */
1750 	if (b & MOUSE_MASK_META)
1751 		key |= KEYC_META;
1752 	if (b & MOUSE_MASK_CTRL)
1753 		key |= KEYC_CTRL;
1754 	if (b & MOUSE_MASK_SHIFT)
1755 		key |= KEYC_SHIFT;
1756 
1757 	if (log_get_level() != 0)
1758 		log_debug("mouse key is %s", key_string_lookup_key (key, 1));
1759 	return (key);
1760 }
1761 
1762 /* Is this a bracket paste key? */
1763 static int
1764 server_client_is_bracket_pasting(struct client *c, key_code key)
1765 {
1766 	if (key == KEYC_PASTE_START) {
1767 		c->flags |= CLIENT_BRACKETPASTING;
1768 		log_debug("%s: bracket paste on", c->name);
1769 		return (1);
1770 	}
1771 
1772 	if (key == KEYC_PASTE_END) {
1773 		c->flags &= ~CLIENT_BRACKETPASTING;
1774 		log_debug("%s: bracket paste off", c->name);
1775 		return (1);
1776 	}
1777 
1778 	return !!(c->flags & CLIENT_BRACKETPASTING);
1779 }
1780 
1781 /* Is this fast enough to probably be a paste? */
1782 static int
1783 server_client_assume_paste(struct session *s)
1784 {
1785 	struct timeval	tv;
1786 	int		t;
1787 
1788 	if ((t = options_get_number(s->options, "assume-paste-time")) == 0)
1789 		return (0);
1790 
1791 	timersub(&s->activity_time, &s->last_activity_time, &tv);
1792 	if (tv.tv_sec == 0 && tv.tv_usec < t * 1000) {
1793 		log_debug("session %s pasting (flag %d)", s->name,
1794 		    !!(s->flags & SESSION_PASTING));
1795 		if (s->flags & SESSION_PASTING)
1796 			return (1);
1797 		s->flags |= SESSION_PASTING;
1798 		return (0);
1799 	}
1800 	log_debug("session %s not pasting", s->name);
1801 	s->flags &= ~SESSION_PASTING;
1802 	return (0);
1803 }
1804 
1805 /* Has the latest client changed? */
1806 static void
1807 server_client_update_latest(struct client *c)
1808 {
1809 	struct window	*w;
1810 
1811 	if (c->session == NULL)
1812 		return;
1813 	w = c->session->curw->window;
1814 
1815 	if (w->latest == c)
1816 		return;
1817 	w->latest = c;
1818 
1819 	if (options_get_number(w->options, "window-size") == WINDOW_SIZE_LATEST)
1820 		recalculate_size(w, 0);
1821 
1822 	notify_client("client-active", c);
1823 }
1824 
1825 /*
1826  * Handle data key input from client. This owns and can modify the key event it
1827  * is given and is responsible for freeing it.
1828  */
1829 static enum cmd_retval
1830 server_client_key_callback(struct cmdq_item *item, void *data)
1831 {
1832 	struct client			*c = cmdq_get_client(item);
1833 	struct key_event		*event = data;
1834 	key_code			 key = event->key;
1835 	struct mouse_event		*m = &event->m;
1836 	struct session			*s = c->session;
1837 	struct winlink			*wl;
1838 	struct window_pane		*wp;
1839 	struct window_mode_entry	*wme;
1840 	struct timeval			 tv;
1841 	struct key_table		*table, *first;
1842 	struct key_binding		*bd;
1843 	int				 xtimeout, flags;
1844 	struct cmd_find_state		 fs;
1845 	key_code			 key0;
1846 
1847 	/* Check the client is good to accept input. */
1848 	if (s == NULL || (c->flags & CLIENT_UNATTACHEDFLAGS))
1849 		goto out;
1850 	wl = s->curw;
1851 
1852 	/* Update the activity timer. */
1853 	if (gettimeofday(&c->activity_time, NULL) != 0)
1854 		fatal("gettimeofday failed");
1855 	session_update_activity(s, &c->activity_time);
1856 
1857 	/* Check for mouse keys. */
1858 	m->valid = 0;
1859 	if (key == KEYC_MOUSE || key == KEYC_DOUBLECLICK) {
1860 		if (c->flags & CLIENT_READONLY)
1861 			goto out;
1862 		key = server_client_check_mouse(c, event);
1863 		if (key == KEYC_UNKNOWN)
1864 			goto out;
1865 
1866 		m->valid = 1;
1867 		m->key = key;
1868 
1869 		/*
1870 		 * Mouse drag is in progress, so fire the callback (now that
1871 		 * the mouse event is valid).
1872 		 */
1873 		if ((key & KEYC_MASK_KEY) == KEYC_DRAGGING) {
1874 			c->tty.mouse_drag_update(c, m);
1875 			goto out;
1876 		}
1877 		event->key = key;
1878 	}
1879 
1880 	/* Find affected pane. */
1881 	if (!KEYC_IS_MOUSE(key) || cmd_find_from_mouse(&fs, m, 0) != 0)
1882 		cmd_find_from_client(&fs, c, 0);
1883 	wp = fs.wp;
1884 
1885 	/* Forward mouse keys if disabled. */
1886 	if (KEYC_IS_MOUSE(key) && !options_get_number(s->options, "mouse"))
1887 		goto forward_key;
1888 
1889 	/* Forward if bracket pasting. */
1890 	if (server_client_is_bracket_pasting(c, key))
1891 		goto forward_key;
1892 
1893 	/* Treat everything as a regular key when pasting is detected. */
1894 	if (!KEYC_IS_MOUSE(key) &&
1895 	    (~key & KEYC_SENT) &&
1896 	    server_client_assume_paste(s))
1897 		goto forward_key;
1898 
1899 	/*
1900 	 * Work out the current key table. If the pane is in a mode, use
1901 	 * the mode table instead of the default key table.
1902 	 */
1903 	if (server_client_is_default_key_table(c, c->keytable) &&
1904 	    wp != NULL &&
1905 	    (wme = TAILQ_FIRST(&wp->modes)) != NULL &&
1906 	    wme->mode->key_table != NULL)
1907 		table = key_bindings_get_table(wme->mode->key_table(wme), 1);
1908 	else
1909 		table = c->keytable;
1910 	first = table;
1911 
1912 table_changed:
1913 	/*
1914 	 * The prefix always takes precedence and forces a switch to the prefix
1915 	 * table, unless we are already there.
1916 	 */
1917 	key0 = (key & (KEYC_MASK_KEY|KEYC_MASK_MODIFIERS));
1918 	if ((key0 == (key_code)options_get_number(s->options, "prefix") ||
1919 	    key0 == (key_code)options_get_number(s->options, "prefix2")) &&
1920 	    strcmp(table->name, "prefix") != 0) {
1921 		server_client_set_key_table(c, "prefix");
1922 		server_status_client(c);
1923 		goto out;
1924 	}
1925 	flags = c->flags;
1926 
1927 try_again:
1928 	/* Log key table. */
1929 	if (wp == NULL)
1930 		log_debug("key table %s (no pane)", table->name);
1931 	else
1932 		log_debug("key table %s (pane %%%u)", table->name, wp->id);
1933 	if (c->flags & CLIENT_REPEAT)
1934 		log_debug("currently repeating");
1935 
1936 	/* Try to see if there is a key binding in the current table. */
1937 	bd = key_bindings_get(table, key0);
1938 	if (bd != NULL) {
1939 		/*
1940 		 * Key was matched in this table. If currently repeating but a
1941 		 * non-repeating binding was found, stop repeating and try
1942 		 * again in the root table.
1943 		 */
1944 		if ((c->flags & CLIENT_REPEAT) &&
1945 		    (~bd->flags & KEY_BINDING_REPEAT)) {
1946 			log_debug("found in key table %s (not repeating)",
1947 			    table->name);
1948 			server_client_set_key_table(c, NULL);
1949 			first = table = c->keytable;
1950 			c->flags &= ~CLIENT_REPEAT;
1951 			server_status_client(c);
1952 			goto table_changed;
1953 		}
1954 		log_debug("found in key table %s", table->name);
1955 
1956 		/*
1957 		 * Take a reference to this table to make sure the key binding
1958 		 * doesn't disappear.
1959 		 */
1960 		table->references++;
1961 
1962 		/*
1963 		 * If this is a repeating key, start the timer. Otherwise reset
1964 		 * the client back to the root table.
1965 		 */
1966 		xtimeout = options_get_number(s->options, "repeat-time");
1967 		if (xtimeout != 0 && (bd->flags & KEY_BINDING_REPEAT)) {
1968 			c->flags |= CLIENT_REPEAT;
1969 
1970 			tv.tv_sec = xtimeout / 1000;
1971 			tv.tv_usec = (xtimeout % 1000) * 1000L;
1972 			evtimer_del(&c->repeat_timer);
1973 			evtimer_add(&c->repeat_timer, &tv);
1974 		} else {
1975 			c->flags &= ~CLIENT_REPEAT;
1976 			server_client_set_key_table(c, NULL);
1977 		}
1978 		server_status_client(c);
1979 
1980 		/* Execute the key binding. */
1981 		key_bindings_dispatch(bd, item, c, event, &fs);
1982 		key_bindings_unref_table(table);
1983 		goto out;
1984 	}
1985 
1986 	/*
1987 	 * No match, try the ANY key.
1988 	 */
1989 	if (key0 != KEYC_ANY) {
1990 		key0 = KEYC_ANY;
1991 		goto try_again;
1992 	}
1993 
1994 	/*
1995 	 * No match in this table. If not in the root table or if repeating,
1996 	 * switch the client back to the root table and try again.
1997 	 */
1998 	log_debug("not found in key table %s", table->name);
1999 	if (!server_client_is_default_key_table(c, table) ||
2000 	    (c->flags & CLIENT_REPEAT)) {
2001 		log_debug("trying in root table");
2002 		server_client_set_key_table(c, NULL);
2003 		table = c->keytable;
2004 		if (c->flags & CLIENT_REPEAT)
2005 			first = table;
2006 		c->flags &= ~CLIENT_REPEAT;
2007 		server_status_client(c);
2008 		goto table_changed;
2009 	}
2010 
2011 	/*
2012 	 * No match in the root table either. If this wasn't the first table
2013 	 * tried, don't pass the key to the pane.
2014 	 */
2015 	if (first != table && (~flags & CLIENT_REPEAT)) {
2016 		server_client_set_key_table(c, NULL);
2017 		server_status_client(c);
2018 		goto out;
2019 	}
2020 
2021 forward_key:
2022 	if (c->flags & CLIENT_READONLY)
2023 		goto out;
2024 	if (wp != NULL)
2025 		window_pane_key(wp, c, s, wl, key, m);
2026 
2027 out:
2028 	if (s != NULL && key != KEYC_FOCUS_OUT)
2029 		server_client_update_latest(c);
2030 	free(event);
2031 	return (CMD_RETURN_NORMAL);
2032 }
2033 
2034 /* Handle a key event. */
2035 int
2036 server_client_handle_key(struct client *c, struct key_event *event)
2037 {
2038 	struct session		*s = c->session;
2039 	struct cmdq_item	*item;
2040 
2041 	/* Check the client is good to accept input. */
2042 	if (s == NULL || (c->flags & CLIENT_UNATTACHEDFLAGS))
2043 		return (0);
2044 
2045 	/*
2046 	 * Key presses in overlay mode and the command prompt are a special
2047 	 * case. The queue might be blocked so they need to be processed
2048 	 * immediately rather than queued.
2049 	 */
2050 	if (~c->flags & CLIENT_READONLY) {
2051 		if (c->message_string != NULL) {
2052 			if (c->message_ignore_keys)
2053 				return (0);
2054 			status_message_clear(c);
2055 		}
2056 		if (c->overlay_key != NULL) {
2057 			switch (c->overlay_key(c, c->overlay_data, event)) {
2058 			case 0:
2059 				return (0);
2060 			case 1:
2061 				server_client_clear_overlay(c);
2062 				return (0);
2063 			}
2064 		}
2065 		server_client_clear_overlay(c);
2066 		if (c->prompt_string != NULL) {
2067 			if (status_prompt_key(c, event->key) == 0)
2068 				return (0);
2069 		}
2070 	}
2071 
2072 	/*
2073 	 * Add the key to the queue so it happens after any commands queued by
2074 	 * previous keys.
2075 	 */
2076 	item = cmdq_get_callback(server_client_key_callback, event);
2077 	cmdq_append(c, item);
2078 	return (1);
2079 }
2080 
2081 /* Client functions that need to happen every loop. */
2082 void
2083 server_client_loop(void)
2084 {
2085 	struct client		*c;
2086 	struct window		*w;
2087 	struct window_pane	*wp;
2088 
2089 	/* Check for window resize. This is done before redrawing. */
2090 	RB_FOREACH(w, windows, &windows)
2091 		server_client_check_window_resize(w);
2092 
2093 	/* Check clients. */
2094 	TAILQ_FOREACH(c, &clients, entry) {
2095 		server_client_check_exit(c);
2096 		if (c->session != NULL) {
2097 			server_client_check_modes(c);
2098 			server_client_check_redraw(c);
2099 			server_client_reset_state(c);
2100 		}
2101 	}
2102 
2103 	/*
2104 	 * Any windows will have been redrawn as part of clients, so clear
2105 	 * their flags now.
2106 	 */
2107 	RB_FOREACH(w, windows, &windows) {
2108 		TAILQ_FOREACH(wp, &w->panes, entry) {
2109 			if (wp->fd != -1) {
2110 				server_client_check_pane_resize(wp);
2111 				server_client_check_pane_buffer(wp);
2112 			}
2113 			wp->flags &= ~PANE_REDRAW;
2114 		}
2115 		check_window_name(w);
2116 	}
2117 }
2118 
2119 /* Check if window needs to be resized. */
2120 static void
2121 server_client_check_window_resize(struct window *w)
2122 {
2123 	struct winlink	*wl;
2124 
2125 	if (~w->flags & WINDOW_RESIZE)
2126 		return;
2127 
2128 	TAILQ_FOREACH(wl, &w->winlinks, wentry) {
2129 		if (wl->session->attached != 0 && wl->session->curw == wl)
2130 			break;
2131 	}
2132 	if (wl == NULL)
2133 		return;
2134 
2135 	log_debug("%s: resizing window @%u", __func__, w->id);
2136 	resize_window(w, w->new_sx, w->new_sy, w->new_xpixel, w->new_ypixel);
2137 }
2138 
2139 /* Resize timer event. */
2140 static void
2141 server_client_resize_timer(__unused int fd, __unused short events, void *data)
2142 {
2143 	struct window_pane	*wp = data;
2144 
2145 	log_debug("%s: %%%u resize timer expired", __func__, wp->id);
2146 	evtimer_del(&wp->resize_timer);
2147 }
2148 
2149 /* Check if pane should be resized. */
2150 static void
2151 server_client_check_pane_resize(struct window_pane *wp)
2152 {
2153 	struct window_pane_resize	*r;
2154 	struct window_pane_resize	*r1;
2155 	struct window_pane_resize	*first;
2156 	struct window_pane_resize	*last;
2157 	struct timeval			 tv = { .tv_usec = 250000 };
2158 
2159 	if (TAILQ_EMPTY(&wp->resize_queue))
2160 		return;
2161 
2162 	if (!event_initialized(&wp->resize_timer))
2163 		evtimer_set(&wp->resize_timer, server_client_resize_timer, wp);
2164 	if (evtimer_pending(&wp->resize_timer, NULL))
2165 		return;
2166 
2167 	log_debug("%s: %%%u needs to be resized", __func__, wp->id);
2168 	TAILQ_FOREACH(r, &wp->resize_queue, entry) {
2169 		log_debug("queued resize: %ux%u -> %ux%u", r->osx, r->osy,
2170 		    r->sx, r->sy);
2171 	}
2172 
2173 	/*
2174 	 * There are three cases that matter:
2175 	 *
2176 	 * - Only one resize. It can just be applied.
2177 	 *
2178 	 * - Multiple resizes and the ending size is different from the
2179 	 *   starting size. We can discard all resizes except the most recent.
2180 	 *
2181 	 * - Multiple resizes and the ending size is the same as the starting
2182 	 *   size. We must resize at least twice to force the application to
2183 	 *   redraw. So apply the first and leave the last on the queue for
2184 	 *   next time.
2185 	 */
2186 	first = TAILQ_FIRST(&wp->resize_queue);
2187 	last = TAILQ_LAST(&wp->resize_queue, window_pane_resizes);
2188 	if (first == last) {
2189 		/* Only one resize. */
2190 		window_pane_send_resize(wp, first->sx, first->sy);
2191 		TAILQ_REMOVE(&wp->resize_queue, first, entry);
2192 		free(first);
2193 	} else if (last->sx != first->osx || last->sy != first->osy) {
2194 		/* Multiple resizes ending up with a different size. */
2195 		window_pane_send_resize(wp, last->sx, last->sy);
2196 		TAILQ_FOREACH_SAFE(r, &wp->resize_queue, entry, r1) {
2197 			TAILQ_REMOVE(&wp->resize_queue, r, entry);
2198 			free(r);
2199 		}
2200 	} else {
2201 		/*
2202 		 * Multiple resizes ending up with the same size. There will
2203 		 * not be more than one to the same size in succession so we
2204 		 * can just use the last-but-one on the list and leave the last
2205 		 * for later. We reduce the time until the next check to avoid
2206 		 * a long delay between the resizes.
2207 		 */
2208 		r = TAILQ_PREV(last, window_pane_resizes, entry);
2209 		window_pane_send_resize(wp, r->sx, r->sy);
2210 		TAILQ_FOREACH_SAFE(r, &wp->resize_queue, entry, r1) {
2211 			if (r == last)
2212 				break;
2213 			TAILQ_REMOVE(&wp->resize_queue, r, entry);
2214 			free(r);
2215 		}
2216 		tv.tv_usec = 10000;
2217 	}
2218 	evtimer_add(&wp->resize_timer, &tv);
2219 }
2220 
2221 /* Check pane buffer size. */
2222 static void
2223 server_client_check_pane_buffer(struct window_pane *wp)
2224 {
2225 	struct evbuffer			*evb = wp->event->input;
2226 	size_t				 minimum;
2227 	struct client			*c;
2228 	struct window_pane_offset	*wpo;
2229 	int				 off = 1, flag;
2230 	u_int				 attached_clients = 0;
2231 	size_t				 new_size;
2232 
2233 	/*
2234 	 * Work out the minimum used size. This is the most that can be removed
2235 	 * from the buffer.
2236 	 */
2237 	minimum = wp->offset.used;
2238 	if (wp->pipe_fd != -1 && wp->pipe_offset.used < minimum)
2239 		minimum = wp->pipe_offset.used;
2240 	TAILQ_FOREACH(c, &clients, entry) {
2241 		if (c->session == NULL)
2242 			continue;
2243 		attached_clients++;
2244 
2245 		if (~c->flags & CLIENT_CONTROL) {
2246 			off = 0;
2247 			continue;
2248 		}
2249 		wpo = control_pane_offset(c, wp, &flag);
2250 		if (wpo == NULL) {
2251 			if (!flag)
2252 				off = 0;
2253 			continue;
2254 		}
2255 		if (!flag)
2256 			off = 0;
2257 
2258 		window_pane_get_new_data(wp, wpo, &new_size);
2259 		log_debug("%s: %s has %zu bytes used and %zu left for %%%u",
2260 		    __func__, c->name, wpo->used - wp->base_offset, new_size,
2261 		    wp->id);
2262 		if (wpo->used < minimum)
2263 			minimum = wpo->used;
2264 	}
2265 	if (attached_clients == 0)
2266 		off = 0;
2267 	minimum -= wp->base_offset;
2268 	if (minimum == 0)
2269 		goto out;
2270 
2271 	/* Drain the buffer. */
2272 	log_debug("%s: %%%u has %zu minimum (of %zu) bytes used", __func__,
2273 	    wp->id, minimum, EVBUFFER_LENGTH(evb));
2274 	evbuffer_drain(evb, minimum);
2275 
2276 	/*
2277 	 * Adjust the base offset. If it would roll over, all the offsets into
2278 	 * the buffer need to be adjusted.
2279 	 */
2280 	if (wp->base_offset > SIZE_MAX - minimum) {
2281 		log_debug("%s: %%%u base offset has wrapped", __func__, wp->id);
2282 		wp->offset.used -= wp->base_offset;
2283 		if (wp->pipe_fd != -1)
2284 			wp->pipe_offset.used -= wp->base_offset;
2285 		TAILQ_FOREACH(c, &clients, entry) {
2286 			if (c->session == NULL || (~c->flags & CLIENT_CONTROL))
2287 				continue;
2288 			wpo = control_pane_offset(c, wp, &flag);
2289 			if (wpo != NULL && !flag)
2290 				wpo->used -= wp->base_offset;
2291 		}
2292 		wp->base_offset = minimum;
2293 	} else
2294 		wp->base_offset += minimum;
2295 
2296 out:
2297 	/*
2298 	 * If there is data remaining, and there are no clients able to consume
2299 	 * it, do not read any more. This is true when there are attached
2300 	 * clients, all of which are control clients which are not able to
2301 	 * accept any more data.
2302 	 */
2303 	log_debug("%s: pane %%%u is %s", __func__, wp->id, off ? "off" : "on");
2304 	if (off)
2305 		bufferevent_disable(wp->event, EV_READ);
2306 	else
2307 		bufferevent_enable(wp->event, EV_READ);
2308 }
2309 
2310 /*
2311  * Update cursor position and mode settings. The scroll region and attributes
2312  * are cleared when idle (waiting for an event) as this is the most likely time
2313  * a user may interrupt tmux, for example with ~^Z in ssh(1). This is a
2314  * compromise between excessive resets and likelihood of an interrupt.
2315  *
2316  * tty_region/tty_reset/tty_update_mode already take care of not resetting
2317  * things that are already in their default state.
2318  */
2319 static void
2320 server_client_reset_state(struct client *c)
2321 {
2322 	struct tty		*tty = &c->tty;
2323 	struct window		*w = c->session->curw->window;
2324 	struct window_pane	*wp = server_client_get_pane(c), *loop;
2325 	struct screen		*s = NULL;
2326 	struct options		*oo = c->session->options;
2327 	int			 mode = 0, cursor, flags, n;
2328 	u_int			 cx = 0, cy = 0, ox, oy, sx, sy;
2329 
2330 	if (c->flags & (CLIENT_CONTROL|CLIENT_SUSPENDED))
2331 		return;
2332 
2333 	/* Disable the block flag. */
2334 	flags = (tty->flags & TTY_BLOCK);
2335 	tty->flags &= ~TTY_BLOCK;
2336 
2337 	/* Get mode from overlay if any, else from screen. */
2338 	if (c->overlay_draw != NULL) {
2339 		if (c->overlay_mode != NULL)
2340 			s = c->overlay_mode(c, c->overlay_data, &cx, &cy);
2341 	} else
2342 		s = wp->screen;
2343 	if (s != NULL)
2344 		mode = s->mode;
2345 	if (log_get_level() != 0) {
2346 		log_debug("%s: client %s mode %s", __func__, c->name,
2347 		    screen_mode_to_string(mode));
2348 	}
2349 
2350 	/* Reset region and margin. */
2351 	tty_region_off(tty);
2352 	tty_margin_off(tty);
2353 
2354 	/* Move cursor to pane cursor and offset. */
2355 	if (c->prompt_string != NULL) {
2356 		n = options_get_number(c->session->options, "status-position");
2357 		if (n == 0)
2358 			cy = 0;
2359 		else {
2360 			n = status_line_size(c);
2361 			if (n == 0)
2362 				cy = tty->sy - 1;
2363 			else
2364 				cy = tty->sy - n;
2365 		}
2366 		cx = c->prompt_cursor;
2367 		mode &= ~MODE_CURSOR;
2368 	} else if (c->overlay_draw == NULL) {
2369 		cursor = 0;
2370 		tty_window_offset(tty, &ox, &oy, &sx, &sy);
2371 		if (wp->xoff + s->cx >= ox && wp->xoff + s->cx <= ox + sx &&
2372 		    wp->yoff + s->cy >= oy && wp->yoff + s->cy <= oy + sy) {
2373 			cursor = 1;
2374 
2375 			cx = wp->xoff + s->cx - ox;
2376 			cy = wp->yoff + s->cy - oy;
2377 
2378 			if (status_at_line(c) == 0)
2379 				cy += status_line_size(c);
2380 		}
2381 		if (!cursor)
2382 			mode &= ~MODE_CURSOR;
2383 	}
2384 	log_debug("%s: cursor to %u,%u", __func__, cx, cy);
2385 	tty_cursor(tty, cx, cy);
2386 
2387 	/*
2388 	 * Set mouse mode if requested. To support dragging, always use button
2389 	 * mode.
2390 	 */
2391 	if (options_get_number(oo, "mouse")) {
2392 		if (c->overlay_draw == NULL) {
2393 			mode &= ~ALL_MOUSE_MODES;
2394 			TAILQ_FOREACH(loop, &w->panes, entry) {
2395 				if (loop->screen->mode & MODE_MOUSE_ALL)
2396 					mode |= MODE_MOUSE_ALL;
2397 			}
2398 		}
2399 		if (~mode & MODE_MOUSE_ALL)
2400 			mode |= MODE_MOUSE_BUTTON;
2401 	}
2402 
2403 	/* Clear bracketed paste mode if at the prompt. */
2404 	if (c->overlay_draw == NULL && c->prompt_string != NULL)
2405 		mode &= ~MODE_BRACKETPASTE;
2406 
2407 	/* Set the terminal mode and reset attributes. */
2408 	tty_update_mode(tty, mode, s);
2409 	tty_reset(tty);
2410 
2411 	/* All writing must be done, send a sync end (if it was started). */
2412 	tty_sync_end(tty);
2413 	tty->flags |= flags;
2414 }
2415 
2416 /* Repeat time callback. */
2417 static void
2418 server_client_repeat_timer(__unused int fd, __unused short events, void *data)
2419 {
2420 	struct client	*c = data;
2421 
2422 	if (c->flags & CLIENT_REPEAT) {
2423 		server_client_set_key_table(c, NULL);
2424 		c->flags &= ~CLIENT_REPEAT;
2425 		server_status_client(c);
2426 	}
2427 }
2428 
2429 /* Double-click callback. */
2430 static void
2431 server_client_click_timer(__unused int fd, __unused short events, void *data)
2432 {
2433 	struct client		*c = data;
2434 	struct key_event	*event;
2435 
2436 	log_debug("click timer expired");
2437 
2438 	if (c->flags & CLIENT_TRIPLECLICK) {
2439 		/*
2440 		 * Waiting for a third click that hasn't happened, so this must
2441 		 * have been a double click.
2442 		 */
2443 		event = xmalloc(sizeof *event);
2444 		event->key = KEYC_DOUBLECLICK;
2445 		memcpy(&event->m, &c->click_event, sizeof event->m);
2446 		if (!server_client_handle_key(c, event))
2447 			free(event);
2448 	}
2449 	c->flags &= ~(CLIENT_DOUBLECLICK|CLIENT_TRIPLECLICK);
2450 }
2451 
2452 /* Check if client should be exited. */
2453 static void
2454 server_client_check_exit(struct client *c)
2455 {
2456 	struct client_file	*cf;
2457 	const char		*name = c->exit_session;
2458 	char			*data;
2459 	size_t			 size, msize;
2460 
2461 	if (c->flags & (CLIENT_DEAD|CLIENT_EXITED))
2462 		return;
2463 	if (~c->flags & CLIENT_EXIT)
2464 		return;
2465 
2466 	if (c->flags & CLIENT_CONTROL) {
2467 		control_discard(c);
2468 		if (!control_all_done(c))
2469 			return;
2470 	}
2471 	RB_FOREACH(cf, client_files, &c->files) {
2472 		if (EVBUFFER_LENGTH(cf->buffer) != 0)
2473 			return;
2474 	}
2475 	c->flags |= CLIENT_EXITED;
2476 
2477 	switch (c->exit_type) {
2478 	case CLIENT_EXIT_RETURN:
2479 		if (c->exit_message != NULL)
2480 			msize = strlen(c->exit_message) + 1;
2481 		else
2482 			msize = 0;
2483 		size = (sizeof c->retval) + msize;
2484 		data = xmalloc(size);
2485 		memcpy(data, &c->retval, sizeof c->retval);
2486 		if (c->exit_message != NULL)
2487 			memcpy(data + sizeof c->retval, c->exit_message, msize);
2488 		proc_send(c->peer, MSG_EXIT, -1, data, size);
2489 		free(data);
2490 		break;
2491 	case CLIENT_EXIT_SHUTDOWN:
2492 		proc_send(c->peer, MSG_SHUTDOWN, -1, NULL, 0);
2493 		break;
2494 	case CLIENT_EXIT_DETACH:
2495 		proc_send(c->peer, c->exit_msgtype, -1, name, strlen(name) + 1);
2496 		break;
2497 	}
2498 	free(c->exit_session);
2499 	free(c->exit_message);
2500 }
2501 
2502 /* Redraw timer callback. */
2503 static void
2504 server_client_redraw_timer(__unused int fd, __unused short events,
2505     __unused void *data)
2506 {
2507 	log_debug("redraw timer fired");
2508 }
2509 
2510 /*
2511  * Check if modes need to be updated. Only modes in the current window are
2512  * updated and it is done when the status line is redrawn.
2513  */
2514 static void
2515 server_client_check_modes(struct client *c)
2516 {
2517 	struct window			*w = c->session->curw->window;
2518 	struct window_pane		*wp;
2519 	struct window_mode_entry	*wme;
2520 
2521 	if (c->flags & (CLIENT_CONTROL|CLIENT_SUSPENDED))
2522 		return;
2523 	if (~c->flags & CLIENT_REDRAWSTATUS)
2524 		return;
2525 	TAILQ_FOREACH(wp, &w->panes, entry) {
2526 		wme = TAILQ_FIRST(&wp->modes);
2527 		if (wme != NULL && wme->mode->update != NULL)
2528 			wme->mode->update(wme);
2529 	}
2530 }
2531 
2532 /* Check for client redraws. */
2533 static void
2534 server_client_check_redraw(struct client *c)
2535 {
2536 	struct session		*s = c->session;
2537 	struct tty		*tty = &c->tty;
2538 	struct window		*w = c->session->curw->window;
2539 	struct window_pane	*wp;
2540 	int			 needed, flags, mode = tty->mode, new_flags = 0;
2541 	int			 redraw;
2542 	u_int			 bit = 0;
2543 	struct timeval		 tv = { .tv_usec = 1000 };
2544 	static struct event	 ev;
2545 	size_t			 left;
2546 
2547 	if (c->flags & (CLIENT_CONTROL|CLIENT_SUSPENDED))
2548 		return;
2549 	if (c->flags & CLIENT_ALLREDRAWFLAGS) {
2550 		log_debug("%s: redraw%s%s%s%s%s", c->name,
2551 		    (c->flags & CLIENT_REDRAWWINDOW) ? " window" : "",
2552 		    (c->flags & CLIENT_REDRAWSTATUS) ? " status" : "",
2553 		    (c->flags & CLIENT_REDRAWBORDERS) ? " borders" : "",
2554 		    (c->flags & CLIENT_REDRAWOVERLAY) ? " overlay" : "",
2555 		    (c->flags & CLIENT_REDRAWPANES) ? " panes" : "");
2556 	}
2557 
2558 	/*
2559 	 * If there is outstanding data, defer the redraw until it has been
2560 	 * consumed. We can just add a timer to get out of the event loop and
2561 	 * end up back here.
2562 	 */
2563 	needed = 0;
2564 	if (c->flags & CLIENT_ALLREDRAWFLAGS)
2565 		needed = 1;
2566 	else {
2567 		TAILQ_FOREACH(wp, &w->panes, entry) {
2568 			if (wp->flags & PANE_REDRAW) {
2569 				needed = 1;
2570 				break;
2571 			}
2572 		}
2573 		if (needed)
2574 			new_flags |= CLIENT_REDRAWPANES;
2575 	}
2576 	if (needed && (left = EVBUFFER_LENGTH(tty->out)) != 0) {
2577 		log_debug("%s: redraw deferred (%zu left)", c->name, left);
2578 		if (!evtimer_initialized(&ev))
2579 			evtimer_set(&ev, server_client_redraw_timer, NULL);
2580 		if (!evtimer_pending(&ev, NULL)) {
2581 			log_debug("redraw timer started");
2582 			evtimer_add(&ev, &tv);
2583 		}
2584 
2585 		if (~c->flags & CLIENT_REDRAWWINDOW) {
2586 			TAILQ_FOREACH(wp, &w->panes, entry) {
2587 				if (wp->flags & PANE_REDRAW) {
2588 					log_debug("%s: pane %%%u needs redraw",
2589 					    c->name, wp->id);
2590 					c->redraw_panes |= (1 << bit);
2591 				}
2592 				if (++bit == 64) {
2593 					/*
2594 					 * If more that 64 panes, give up and
2595 					 * just redraw the window.
2596 					 */
2597 					new_flags &= CLIENT_REDRAWPANES;
2598 					new_flags |= CLIENT_REDRAWWINDOW;
2599 					break;
2600 				}
2601 			}
2602 			if (c->redraw_panes != 0)
2603 				c->flags |= CLIENT_REDRAWPANES;
2604 		}
2605 		c->flags |= new_flags;
2606 		return;
2607 	} else if (needed)
2608 		log_debug("%s: redraw needed", c->name);
2609 
2610 	flags = tty->flags & (TTY_BLOCK|TTY_FREEZE|TTY_NOCURSOR);
2611 	tty->flags = (tty->flags & ~(TTY_BLOCK|TTY_FREEZE))|TTY_NOCURSOR;
2612 
2613 	if (~c->flags & CLIENT_REDRAWWINDOW) {
2614 		/*
2615 		 * If not redrawing the entire window, check whether each pane
2616 		 * needs to be redrawn.
2617 		 */
2618 		TAILQ_FOREACH(wp, &w->panes, entry) {
2619 			redraw = 0;
2620 			if (wp->flags & PANE_REDRAW)
2621 				redraw = 1;
2622 			else if (c->flags & CLIENT_REDRAWPANES)
2623 				redraw = !!(c->redraw_panes & (1 << bit));
2624 			bit++;
2625 			if (!redraw)
2626 				continue;
2627 			log_debug("%s: redrawing pane %%%u", __func__, wp->id);
2628 			screen_redraw_pane(c, wp);
2629 		}
2630 		c->redraw_panes = 0;
2631 		c->flags &= ~CLIENT_REDRAWPANES;
2632 	}
2633 
2634 	if (c->flags & CLIENT_ALLREDRAWFLAGS) {
2635 		if (options_get_number(s->options, "set-titles")) {
2636 			server_client_set_title(c);
2637 			server_client_set_path(c);
2638 		}
2639 		screen_redraw_screen(c);
2640 	}
2641 
2642 	tty->flags = (tty->flags & ~TTY_NOCURSOR)|(flags & TTY_NOCURSOR);
2643 	tty_update_mode(tty, mode, NULL);
2644 	tty->flags = (tty->flags & ~(TTY_BLOCK|TTY_FREEZE|TTY_NOCURSOR))|flags;
2645 
2646 	c->flags &= ~(CLIENT_ALLREDRAWFLAGS|CLIENT_STATUSFORCE);
2647 
2648 	if (needed) {
2649 		/*
2650 		 * We would have deferred the redraw unless the output buffer
2651 		 * was empty, so we can record how many bytes the redraw
2652 		 * generated.
2653 		 */
2654 		c->redraw = EVBUFFER_LENGTH(tty->out);
2655 		log_debug("%s: redraw added %zu bytes", c->name, c->redraw);
2656 	}
2657 }
2658 
2659 /* Set client title. */
2660 static void
2661 server_client_set_title(struct client *c)
2662 {
2663 	struct session		*s = c->session;
2664 	const char		*template;
2665 	char			*title;
2666 	struct format_tree	*ft;
2667 
2668 	template = options_get_string(s->options, "set-titles-string");
2669 
2670 	ft = format_create(c, NULL, FORMAT_NONE, 0);
2671 	format_defaults(ft, c, NULL, NULL, NULL);
2672 
2673 	title = format_expand_time(ft, template);
2674 	if (c->title == NULL || strcmp(title, c->title) != 0) {
2675 		free(c->title);
2676 		c->title = xstrdup(title);
2677 		tty_set_title(&c->tty, c->title);
2678 	}
2679 	free(title);
2680 
2681 	format_free(ft);
2682 }
2683 
2684 /* Set client path. */
2685 static void
2686 server_client_set_path(struct client *c)
2687 {
2688 	struct session	*s = c->session;
2689 	const char	*path;
2690 
2691 	if (s->curw == NULL)
2692 		return;
2693 	if (s->curw->window->active->base.path == NULL)
2694 		path = "";
2695 	else
2696 		path = s->curw->window->active->base.path;
2697 	if (c->path == NULL || strcmp(path, c->path) != 0) {
2698 		free(c->path);
2699 		c->path = xstrdup(path);
2700 		tty_set_path(&c->tty, c->path);
2701 	}
2702 }
2703 
2704 /* Dispatch message from client. */
2705 static void
2706 server_client_dispatch(struct imsg *imsg, void *arg)
2707 {
2708 	struct client	*c = arg;
2709 	ssize_t		 datalen;
2710 	struct session	*s;
2711 
2712 	if (c->flags & CLIENT_DEAD)
2713 		return;
2714 
2715 	if (imsg == NULL) {
2716 		server_client_lost(c);
2717 		return;
2718 	}
2719 
2720 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
2721 
2722 	switch (imsg->hdr.type) {
2723 	case MSG_IDENTIFY_CLIENTPID:
2724 	case MSG_IDENTIFY_CWD:
2725 	case MSG_IDENTIFY_ENVIRON:
2726 	case MSG_IDENTIFY_FEATURES:
2727 	case MSG_IDENTIFY_FLAGS:
2728 	case MSG_IDENTIFY_LONGFLAGS:
2729 	case MSG_IDENTIFY_STDIN:
2730 	case MSG_IDENTIFY_STDOUT:
2731 	case MSG_IDENTIFY_TERM:
2732 	case MSG_IDENTIFY_TERMINFO:
2733 	case MSG_IDENTIFY_TTYNAME:
2734 	case MSG_IDENTIFY_DONE:
2735 		server_client_dispatch_identify(c, imsg);
2736 		break;
2737 	case MSG_COMMAND:
2738 		server_client_dispatch_command(c, imsg);
2739 		break;
2740 	case MSG_RESIZE:
2741 		if (datalen != 0)
2742 			fatalx("bad MSG_RESIZE size");
2743 
2744 		if (c->flags & CLIENT_CONTROL)
2745 			break;
2746 		server_client_update_latest(c);
2747 		tty_resize(&c->tty);
2748 		recalculate_sizes();
2749 		if (c->overlay_resize == NULL)
2750 			server_client_clear_overlay(c);
2751 		else
2752 			c->overlay_resize(c, c->overlay_data);
2753 		server_redraw_client(c);
2754 		if (c->session != NULL)
2755 			notify_client("client-resized", c);
2756 		break;
2757 	case MSG_EXITING:
2758 		if (datalen != 0)
2759 			fatalx("bad MSG_EXITING size");
2760 		server_client_set_session(c, NULL);
2761 		recalculate_sizes();
2762 		tty_close(&c->tty);
2763 		proc_send(c->peer, MSG_EXITED, -1, NULL, 0);
2764 		break;
2765 	case MSG_WAKEUP:
2766 	case MSG_UNLOCK:
2767 		if (datalen != 0)
2768 			fatalx("bad MSG_WAKEUP size");
2769 
2770 		if (!(c->flags & CLIENT_SUSPENDED))
2771 			break;
2772 		c->flags &= ~CLIENT_SUSPENDED;
2773 
2774 		if (c->fd == -1 || c->session == NULL) /* exited already */
2775 			break;
2776 		s = c->session;
2777 
2778 		if (gettimeofday(&c->activity_time, NULL) != 0)
2779 			fatal("gettimeofday failed");
2780 
2781 		tty_start_tty(&c->tty);
2782 		server_redraw_client(c);
2783 		recalculate_sizes();
2784 
2785 		if (s != NULL)
2786 			session_update_activity(s, &c->activity_time);
2787 		break;
2788 	case MSG_SHELL:
2789 		if (datalen != 0)
2790 			fatalx("bad MSG_SHELL size");
2791 
2792 		server_client_dispatch_shell(c);
2793 		break;
2794 	case MSG_WRITE_READY:
2795 		file_write_ready(&c->files, imsg);
2796 		break;
2797 	case MSG_READ:
2798 		file_read_data(&c->files, imsg);
2799 		break;
2800 	case MSG_READ_DONE:
2801 		file_read_done(&c->files, imsg);
2802 		break;
2803 	}
2804 }
2805 
2806 /* Callback when command is not allowed. */
2807 static enum cmd_retval
2808 server_client_read_only(struct cmdq_item *item, __unused void *data)
2809 {
2810 	cmdq_error(item, "client is read-only");
2811 	return (CMD_RETURN_ERROR);
2812 }
2813 
2814 /* Callback when command is done. */
2815 static enum cmd_retval
2816 server_client_command_done(struct cmdq_item *item, __unused void *data)
2817 {
2818 	struct client	*c = cmdq_get_client(item);
2819 
2820 	if (~c->flags & CLIENT_ATTACHED)
2821 		c->flags |= CLIENT_EXIT;
2822 	else if (~c->flags & CLIENT_EXIT) {
2823 		if (c->flags & CLIENT_CONTROL)
2824 			control_ready(c);
2825 		tty_send_requests(&c->tty);
2826 	}
2827 	return (CMD_RETURN_NORMAL);
2828 }
2829 
2830 /* Handle command message. */
2831 static void
2832 server_client_dispatch_command(struct client *c, struct imsg *imsg)
2833 {
2834 	struct msg_command	  data;
2835 	char			 *buf;
2836 	size_t			  len;
2837 	int			  argc;
2838 	char			**argv, *cause;
2839 	struct cmd_parse_result	 *pr;
2840 	struct args_value	 *values;
2841 	struct cmdq_item	 *new_item;
2842 
2843 	if (c->flags & CLIENT_EXIT)
2844 		return;
2845 
2846 	if (imsg->hdr.len - IMSG_HEADER_SIZE < sizeof data)
2847 		fatalx("bad MSG_COMMAND size");
2848 	memcpy(&data, imsg->data, sizeof data);
2849 
2850 	buf = (char *)imsg->data + sizeof data;
2851 	len = imsg->hdr.len  - IMSG_HEADER_SIZE - sizeof data;
2852 	if (len > 0 && buf[len - 1] != '\0')
2853 		fatalx("bad MSG_COMMAND string");
2854 
2855 	argc = data.argc;
2856 	if (cmd_unpack_argv(buf, len, argc, &argv) != 0) {
2857 		cause = xstrdup("command too long");
2858 		goto error;
2859 	}
2860 
2861 	if (argc == 0) {
2862 		argc = 1;
2863 		argv = xcalloc(1, sizeof *argv);
2864 		*argv = xstrdup("new-session");
2865 	}
2866 
2867 	values = args_from_vector(argc, argv);
2868 	pr = cmd_parse_from_arguments(values, argc, NULL);
2869 	switch (pr->status) {
2870 	case CMD_PARSE_ERROR:
2871 		cause = pr->error;
2872 		goto error;
2873 	case CMD_PARSE_SUCCESS:
2874 		break;
2875 	}
2876 	args_free_values(values, argc);
2877 	free(values);
2878 	cmd_free_argv(argc, argv);
2879 
2880 	if ((c->flags & CLIENT_READONLY) &&
2881 	    !cmd_list_all_have(pr->cmdlist, CMD_READONLY))
2882 		new_item = cmdq_get_callback(server_client_read_only, NULL);
2883 	else
2884 		new_item = cmdq_get_command(pr->cmdlist, NULL);
2885 	cmdq_append(c, new_item);
2886 	cmdq_append(c, cmdq_get_callback(server_client_command_done, NULL));
2887 
2888 	cmd_list_free(pr->cmdlist);
2889 	return;
2890 
2891 error:
2892 	cmd_free_argv(argc, argv);
2893 
2894 	cmdq_append(c, cmdq_get_error(cause));
2895 	free(cause);
2896 
2897 	c->flags |= CLIENT_EXIT;
2898 }
2899 
2900 /* Handle identify message. */
2901 static void
2902 server_client_dispatch_identify(struct client *c, struct imsg *imsg)
2903 {
2904 	const char	*data, *home;
2905 	size_t		 datalen;
2906 	int		 flags, feat;
2907 	uint64_t	 longflags;
2908 	char		*name;
2909 
2910 	if (c->flags & CLIENT_IDENTIFIED)
2911 		fatalx("out-of-order identify message");
2912 
2913 	data = imsg->data;
2914 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
2915 
2916 	switch (imsg->hdr.type)	{
2917 	case MSG_IDENTIFY_FEATURES:
2918 		if (datalen != sizeof feat)
2919 			fatalx("bad MSG_IDENTIFY_FEATURES size");
2920 		memcpy(&feat, data, sizeof feat);
2921 		c->term_features |= feat;
2922 		log_debug("client %p IDENTIFY_FEATURES %s", c,
2923 		    tty_get_features(feat));
2924 		break;
2925 	case MSG_IDENTIFY_FLAGS:
2926 		if (datalen != sizeof flags)
2927 			fatalx("bad MSG_IDENTIFY_FLAGS size");
2928 		memcpy(&flags, data, sizeof flags);
2929 		c->flags |= flags;
2930 		log_debug("client %p IDENTIFY_FLAGS %#x", c, flags);
2931 		break;
2932 	case MSG_IDENTIFY_LONGFLAGS:
2933 		if (datalen != sizeof longflags)
2934 			fatalx("bad MSG_IDENTIFY_LONGFLAGS size");
2935 		memcpy(&longflags, data, sizeof longflags);
2936 		c->flags |= longflags;
2937 		log_debug("client %p IDENTIFY_LONGFLAGS %#llx", c,
2938 		    (unsigned long long)longflags);
2939 		break;
2940 	case MSG_IDENTIFY_TERM:
2941 		if (datalen == 0 || data[datalen - 1] != '\0')
2942 			fatalx("bad MSG_IDENTIFY_TERM string");
2943 		if (*data == '\0')
2944 			c->term_name = xstrdup("unknown");
2945 		else
2946 			c->term_name = xstrdup(data);
2947 		log_debug("client %p IDENTIFY_TERM %s", c, data);
2948 		break;
2949 	case MSG_IDENTIFY_TERMINFO:
2950 		if (datalen == 0 || data[datalen - 1] != '\0')
2951 			fatalx("bad MSG_IDENTIFY_TERMINFO string");
2952 		c->term_caps = xreallocarray(c->term_caps, c->term_ncaps + 1,
2953 		    sizeof *c->term_caps);
2954 		c->term_caps[c->term_ncaps++] = xstrdup(data);
2955 		log_debug("client %p IDENTIFY_TERMINFO %s", c, data);
2956 		break;
2957 	case MSG_IDENTIFY_TTYNAME:
2958 		if (datalen == 0 || data[datalen - 1] != '\0')
2959 			fatalx("bad MSG_IDENTIFY_TTYNAME string");
2960 		c->ttyname = xstrdup(data);
2961 		log_debug("client %p IDENTIFY_TTYNAME %s", c, data);
2962 		break;
2963 	case MSG_IDENTIFY_CWD:
2964 		if (datalen == 0 || data[datalen - 1] != '\0')
2965 			fatalx("bad MSG_IDENTIFY_CWD string");
2966 		if (access(data, X_OK) == 0)
2967 			c->cwd = xstrdup(data);
2968 		else if ((home = find_home()) != NULL)
2969 			c->cwd = xstrdup(home);
2970 		else
2971 			c->cwd = xstrdup("/");
2972 		log_debug("client %p IDENTIFY_CWD %s", c, data);
2973 		break;
2974 	case MSG_IDENTIFY_STDIN:
2975 		if (datalen != 0)
2976 			fatalx("bad MSG_IDENTIFY_STDIN size");
2977 		c->fd = imsg->fd;
2978 		log_debug("client %p IDENTIFY_STDIN %d", c, imsg->fd);
2979 		break;
2980 	case MSG_IDENTIFY_STDOUT:
2981 		if (datalen != 0)
2982 			fatalx("bad MSG_IDENTIFY_STDOUT size");
2983 		c->out_fd = imsg->fd;
2984 		log_debug("client %p IDENTIFY_STDOUT %d", c, imsg->fd);
2985 		break;
2986 	case MSG_IDENTIFY_ENVIRON:
2987 		if (datalen == 0 || data[datalen - 1] != '\0')
2988 			fatalx("bad MSG_IDENTIFY_ENVIRON string");
2989 		if (strchr(data, '=') != NULL)
2990 			environ_put(c->environ, data, 0);
2991 		log_debug("client %p IDENTIFY_ENVIRON %s", c, data);
2992 		break;
2993 	case MSG_IDENTIFY_CLIENTPID:
2994 		if (datalen != sizeof c->pid)
2995 			fatalx("bad MSG_IDENTIFY_CLIENTPID size");
2996 		memcpy(&c->pid, data, sizeof c->pid);
2997 		log_debug("client %p IDENTIFY_CLIENTPID %ld", c, (long)c->pid);
2998 		break;
2999 	default:
3000 		break;
3001 	}
3002 
3003 	if (imsg->hdr.type != MSG_IDENTIFY_DONE)
3004 		return;
3005 	c->flags |= CLIENT_IDENTIFIED;
3006 
3007 	if (*c->ttyname != '\0')
3008 		name = xstrdup(c->ttyname);
3009 	else
3010 		xasprintf(&name, "client-%ld", (long)c->pid);
3011 	c->name = name;
3012 	log_debug("client %p name is %s", c, c->name);
3013 
3014 	if (c->flags & CLIENT_CONTROL)
3015 		control_start(c);
3016 	else if (c->fd != -1) {
3017 		if (tty_init(&c->tty, c) != 0) {
3018 			close(c->fd);
3019 			c->fd = -1;
3020 		} else {
3021 			tty_resize(&c->tty);
3022 			c->flags |= CLIENT_TERMINAL;
3023 		}
3024 		close(c->out_fd);
3025 		c->out_fd = -1;
3026 	}
3027 
3028 	/*
3029 	 * If this is the first client, load configuration files. Any later
3030 	 * clients are allowed to continue with their command even if the
3031 	 * config has not been loaded - they might have been run from inside it
3032 	 */
3033 	if ((~c->flags & CLIENT_EXIT) &&
3034 	     !cfg_finished &&
3035 	     c == TAILQ_FIRST(&clients))
3036 		start_cfg();
3037 }
3038 
3039 /* Handle shell message. */
3040 static void
3041 server_client_dispatch_shell(struct client *c)
3042 {
3043 	const char	*shell;
3044 
3045 	shell = options_get_string(global_s_options, "default-shell");
3046 	if (!checkshell(shell))
3047 		shell = _PATH_BSHELL;
3048 	proc_send(c->peer, MSG_SHELL, -1, shell, strlen(shell) + 1);
3049 
3050 	proc_kill_peer(c->peer);
3051 }
3052 
3053 /* Get client working directory. */
3054 const char *
3055 server_client_get_cwd(struct client *c, struct session *s)
3056 {
3057 	const char	*home;
3058 
3059 	if (!cfg_finished && cfg_client != NULL)
3060 		return (cfg_client->cwd);
3061 	if (c != NULL && c->session == NULL && c->cwd != NULL)
3062 		return (c->cwd);
3063 	if (s != NULL && s->cwd != NULL)
3064 		return (s->cwd);
3065 	if (c != NULL && (s = c->session) != NULL && s->cwd != NULL)
3066 		return (s->cwd);
3067 	if ((home = find_home()) != NULL)
3068 		return (home);
3069 	return ("/");
3070 }
3071 
3072 /* Get control client flags. */
3073 static uint64_t
3074 server_client_control_flags(struct client *c, const char *next)
3075 {
3076 	if (strcmp(next, "pause-after") == 0) {
3077 		c->pause_age = 0;
3078 		return (CLIENT_CONTROL_PAUSEAFTER);
3079 	}
3080 	if (sscanf(next, "pause-after=%u", &c->pause_age) == 1) {
3081 		c->pause_age *= 1000;
3082 		return (CLIENT_CONTROL_PAUSEAFTER);
3083 	}
3084 	if (strcmp(next, "no-output") == 0)
3085 		return (CLIENT_CONTROL_NOOUTPUT);
3086 	if (strcmp(next, "wait-exit") == 0)
3087 		return (CLIENT_CONTROL_WAITEXIT);
3088 	return (0);
3089 }
3090 
3091 /* Set client flags. */
3092 void
3093 server_client_set_flags(struct client *c, const char *flags)
3094 {
3095 	char	*s, *copy, *next;
3096 	uint64_t flag;
3097 	int	 not;
3098 
3099 	s = copy = xstrdup(flags);
3100 	while ((next = strsep(&s, ",")) != NULL) {
3101 		not = (*next == '!');
3102 		if (not)
3103 			next++;
3104 
3105 		if (c->flags & CLIENT_CONTROL)
3106 			flag = server_client_control_flags(c, next);
3107 		else
3108 			flag = 0;
3109 		if (strcmp(next, "read-only") == 0)
3110 			flag = CLIENT_READONLY;
3111 		else if (strcmp(next, "ignore-size") == 0)
3112 			flag = CLIENT_IGNORESIZE;
3113 		else if (strcmp(next, "active-pane") == 0)
3114 			flag = CLIENT_ACTIVEPANE;
3115 		if (flag == 0)
3116 			continue;
3117 
3118 		log_debug("client %s set flag %s", c->name, next);
3119 		if (not) {
3120 			if (c->flags & CLIENT_READONLY)
3121 				flag &= ~CLIENT_READONLY;
3122 			c->flags &= ~flag;
3123 		} else
3124 			c->flags |= flag;
3125 		if (flag == CLIENT_CONTROL_NOOUTPUT)
3126 			control_reset_offsets(c);
3127 	}
3128 	free(copy);
3129 	proc_send(c->peer, MSG_FLAGS, -1, &c->flags, sizeof c->flags);
3130 }
3131 
3132 /* Get client flags. This is only flags useful to show to users. */
3133 const char *
3134 server_client_get_flags(struct client *c)
3135 {
3136 	static char	s[256];
3137 	char	 	tmp[32];
3138 
3139 	*s = '\0';
3140 	if (c->flags & CLIENT_ATTACHED)
3141 		strlcat(s, "attached,", sizeof s);
3142 	if (c->flags & CLIENT_FOCUSED)
3143 		strlcat(s, "focused,", sizeof s);
3144 	if (c->flags & CLIENT_CONTROL)
3145 		strlcat(s, "control-mode,", sizeof s);
3146 	if (c->flags & CLIENT_IGNORESIZE)
3147 		strlcat(s, "ignore-size,", sizeof s);
3148 	if (c->flags & CLIENT_CONTROL_NOOUTPUT)
3149 		strlcat(s, "no-output,", sizeof s);
3150 	if (c->flags & CLIENT_CONTROL_WAITEXIT)
3151 		strlcat(s, "wait-exit,", sizeof s);
3152 	if (c->flags & CLIENT_CONTROL_PAUSEAFTER) {
3153 		xsnprintf(tmp, sizeof tmp, "pause-after=%u,",
3154 		    c->pause_age / 1000);
3155 		strlcat(s, tmp, sizeof s);
3156 	}
3157 	if (c->flags & CLIENT_READONLY)
3158 		strlcat(s, "read-only,", sizeof s);
3159 	if (c->flags & CLIENT_ACTIVEPANE)
3160 		strlcat(s, "active-pane,", sizeof s);
3161 	if (c->flags & CLIENT_SUSPENDED)
3162 		strlcat(s, "suspended,", sizeof s);
3163 	if (c->flags & CLIENT_UTF8)
3164 		strlcat(s, "UTF-8,", sizeof s);
3165 	if (*s != '\0')
3166 		s[strlen(s) - 1] = '\0';
3167 	return (s);
3168 }
3169 
3170 /* Get client window. */
3171 struct client_window *
3172 server_client_get_client_window(struct client *c, u_int id)
3173 {
3174 	struct client_window	cw = { .window = id };
3175 
3176 	return (RB_FIND(client_windows, &c->windows, &cw));
3177 }
3178 
3179 /* Add client window. */
3180 struct client_window *
3181 server_client_add_client_window(struct client *c, u_int id)
3182 {
3183 	struct client_window	*cw;
3184 
3185 	cw = server_client_get_client_window(c, id);
3186 	if (cw == NULL) {
3187 		cw = xcalloc(1, sizeof *cw);
3188 		cw->window = id;
3189 		RB_INSERT(client_windows, &c->windows, cw);
3190 	}
3191 	return (cw);
3192 }
3193 
3194 /* Get client active pane. */
3195 struct window_pane *
3196 server_client_get_pane(struct client *c)
3197 {
3198 	struct session		*s = c->session;
3199 	struct client_window	*cw;
3200 
3201 	if (s == NULL)
3202 		return (NULL);
3203 
3204 	if (~c->flags & CLIENT_ACTIVEPANE)
3205 		return (s->curw->window->active);
3206 	cw = server_client_get_client_window(c, s->curw->window->id);
3207 	if (cw == NULL)
3208 		return (s->curw->window->active);
3209 	return (cw->pane);
3210 }
3211 
3212 /* Set client active pane. */
3213 void
3214 server_client_set_pane(struct client *c, struct window_pane *wp)
3215 {
3216 	struct session		*s = c->session;
3217 	struct client_window	*cw;
3218 
3219 	if (s == NULL)
3220 		return;
3221 
3222 	cw = server_client_add_client_window(c, s->curw->window->id);
3223 	cw->pane = wp;
3224 	log_debug("%s pane now %%%u", c->name, wp->id);
3225 }
3226 
3227 /* Remove pane from client lists. */
3228 void
3229 server_client_remove_pane(struct window_pane *wp)
3230 {
3231 	struct client		*c;
3232 	struct window		*w = wp->window;
3233 	struct client_window	*cw;
3234 
3235 	TAILQ_FOREACH(c, &clients, entry) {
3236 		cw = server_client_get_client_window(c, w->id);
3237 		if (cw != NULL && cw->pane == wp) {
3238 			RB_REMOVE(client_windows, &c->windows, cw);
3239 			free(cw);
3240 		}
3241 	}
3242 }
3243 
3244 /* Print to a client. */
3245 void
3246 server_client_print(struct client *c, int parse, struct evbuffer *evb)
3247 {
3248 	void				*data = EVBUFFER_DATA(evb);
3249 	size_t				 size = EVBUFFER_LENGTH(evb);
3250 	struct window_pane		*wp;
3251 	struct window_mode_entry	*wme;
3252 	char				*sanitized, *msg, *line;
3253 
3254 	if (!parse) {
3255 		utf8_stravisx(&msg, data, size,
3256 		    VIS_OCTAL|VIS_CSTYLE|VIS_NOSLASH);
3257 		log_debug("%s: %s", __func__, msg);
3258 	} else {
3259 		msg = EVBUFFER_DATA(evb);
3260 		if (msg[size - 1] != '\0')
3261 			evbuffer_add(evb, "", 1);
3262 	}
3263 
3264 	if (c == NULL)
3265 		goto out;
3266 
3267 	if (c->session == NULL || (c->flags & CLIENT_CONTROL)) {
3268 		if (~c->flags & CLIENT_UTF8) {
3269 			sanitized = utf8_sanitize(msg);
3270 			if (c->flags & CLIENT_CONTROL)
3271 				control_write(c, "%s", sanitized);
3272 			else
3273 				file_print(c, "%s\n", sanitized);
3274 			free(sanitized);
3275 		} else {
3276 			if (c->flags & CLIENT_CONTROL)
3277 				control_write(c, "%s", msg);
3278 			else
3279 				file_print(c, "%s\n", msg);
3280 		}
3281 		goto out;
3282 	}
3283 
3284 	wp = server_client_get_pane(c);
3285 	wme = TAILQ_FIRST(&wp->modes);
3286 	if (wme == NULL || wme->mode != &window_view_mode)
3287 		window_pane_set_mode(wp, NULL, &window_view_mode, NULL, NULL);
3288 	if (parse) {
3289 		do {
3290 			line = evbuffer_readln(evb, NULL, EVBUFFER_EOL_LF);
3291 			if (line != NULL) {
3292 				window_copy_add(wp, 1, "%s", line);
3293 				free(line);
3294 			}
3295 		} while (line != NULL);
3296 
3297 		size = EVBUFFER_LENGTH(evb);
3298 		if (size != 0) {
3299 			line = EVBUFFER_DATA(evb);
3300 			window_copy_add(wp, 1, "%.*s", (int)size, line);
3301 		}
3302 	} else
3303 		window_copy_add(wp, 0, "%s", msg);
3304 
3305 out:
3306 	if (!parse)
3307 		free(msg);
3308 }
3309