xref: /openbsd-src/usr.bin/tmux/server-client.c (revision 7c0ec4b8992567abb1e1536622dc789a9a39d9f1)
1 /* $OpenBSD: server-client.c,v 1.407 2024/08/27 07:25:27 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, *fs;
568 	struct winlink		*fwl;
569 	struct window_pane	*wp, *fwp;
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 		if (m->sgr_type == 'm')
630 			b = m->sgr_b;
631 		log_debug("up at %u,%u", x, y);
632 	} else {
633 		if (c->flags & CLIENT_DOUBLECLICK) {
634 			evtimer_del(&c->click_timer);
635 			c->flags &= ~CLIENT_DOUBLECLICK;
636 			if (m->b == c->click_button) {
637 				type = SECOND;
638 				x = m->x, y = m->y, b = m->b;
639 				log_debug("second-click at %u,%u", x, y);
640 				c->flags |= CLIENT_TRIPLECLICK;
641 			}
642 		} else if (c->flags & CLIENT_TRIPLECLICK) {
643 			evtimer_del(&c->click_timer);
644 			c->flags &= ~CLIENT_TRIPLECLICK;
645 			if (m->b == c->click_button) {
646 				type = TRIPLE;
647 				x = m->x, y = m->y, b = m->b;
648 				log_debug("triple-click at %u,%u", x, y);
649 				goto have_event;
650 			}
651 		}
652 
653 		/* DOWN is the only remaining event type. */
654 		if (type == NOTYPE) {
655 			type = DOWN;
656 			x = m->x, y = m->y, b = m->b;
657 			log_debug("down at %u,%u", x, y);
658 			c->flags |= CLIENT_DOUBLECLICK;
659 		}
660 
661 		if (KEYC_CLICK_TIMEOUT != 0) {
662 			memcpy(&c->click_event, m, sizeof c->click_event);
663 			c->click_button = m->b;
664 
665 			log_debug("click timer started");
666 			tv.tv_sec = KEYC_CLICK_TIMEOUT / 1000;
667 			tv.tv_usec = (KEYC_CLICK_TIMEOUT % 1000) * 1000L;
668 			evtimer_del(&c->click_timer);
669 			evtimer_add(&c->click_timer, &tv);
670 		}
671 	}
672 
673 have_event:
674 	if (type == NOTYPE)
675 		return (KEYC_UNKNOWN);
676 
677 	/* Save the session. */
678 	m->s = s->id;
679 	m->w = -1;
680 	m->wp = -1;
681 	m->ignore = ignore;
682 
683 	/* Is this on the status line? */
684 	m->statusat = status_at_line(c);
685 	m->statuslines = status_line_size(c);
686 	if (m->statusat != -1 &&
687 	    y >= (u_int)m->statusat &&
688 	    y < m->statusat + m->statuslines) {
689 		sr = status_get_range(c, x, y - m->statusat);
690 		if (sr == NULL) {
691 			where = STATUS_DEFAULT;
692 		} else {
693 			switch (sr->type) {
694 			case STYLE_RANGE_NONE:
695 				return (KEYC_UNKNOWN);
696 			case STYLE_RANGE_LEFT:
697 				log_debug("mouse range: left");
698 				where = STATUS_LEFT;
699 				break;
700 			case STYLE_RANGE_RIGHT:
701 				log_debug("mouse range: right");
702 				where = STATUS_RIGHT;
703 				break;
704 			case STYLE_RANGE_PANE:
705 				fwp = window_pane_find_by_id(sr->argument);
706 				if (fwp == NULL)
707 					return (KEYC_UNKNOWN);
708 				m->wp = sr->argument;
709 
710 				log_debug("mouse range: pane %%%u", m->wp);
711 				where = STATUS;
712 				break;
713 			case STYLE_RANGE_WINDOW:
714 				fwl = winlink_find_by_index(&s->windows,
715 				    sr->argument);
716 				if (fwl == NULL)
717 					return (KEYC_UNKNOWN);
718 				m->w = fwl->window->id;
719 
720 				log_debug("mouse range: window @%u", m->w);
721 				where = STATUS;
722 				break;
723 			case STYLE_RANGE_SESSION:
724 				fs = session_find_by_id(sr->argument);
725 				if (fs == NULL)
726 					return (KEYC_UNKNOWN);
727 				m->s = sr->argument;
728 
729 				log_debug("mouse range: session $%u", m->s);
730 				where = STATUS;
731 				break;
732 			case STYLE_RANGE_USER:
733 				where = STATUS;
734 				break;
735 			}
736 		}
737 	}
738 
739 	/* Not on status line. Adjust position and check for border or pane. */
740 	if (where == NOWHERE) {
741 		px = x;
742 		if (m->statusat == 0 && y >= m->statuslines)
743 			py = y - m->statuslines;
744 		else if (m->statusat > 0 && y >= (u_int)m->statusat)
745 			py = m->statusat - 1;
746 		else
747 			py = y;
748 
749 		tty_window_offset(&c->tty, &m->ox, &m->oy, &sx, &sy);
750 		log_debug("mouse window @%u at %u,%u (%ux%u)",
751 		    s->curw->window->id, m->ox, m->oy, sx, sy);
752 		if (px > sx || py > sy)
753 			return (KEYC_UNKNOWN);
754 		px = px + m->ox;
755 		py = py + m->oy;
756 
757 		/* Try the pane borders if not zoomed. */
758 		if (~s->curw->window->flags & WINDOW_ZOOMED) {
759 			TAILQ_FOREACH(wp, &s->curw->window->panes, entry) {
760 				if ((wp->xoff + wp->sx == px &&
761 				    wp->yoff <= 1 + py &&
762 				    wp->yoff + wp->sy >= py) ||
763 				    (wp->yoff + wp->sy == py &&
764 				    wp->xoff <= 1 + px &&
765 				    wp->xoff + wp->sx >= px))
766 					break;
767 			}
768 			if (wp != NULL)
769 				where = BORDER;
770 		}
771 
772 		/* Otherwise try inside the pane. */
773 		if (where == NOWHERE) {
774 			wp = window_get_active_at(s->curw->window, px, py);
775 			if (wp != NULL)
776 				where = PANE;
777 			else
778 				return (KEYC_UNKNOWN);
779 		}
780 		if (where == PANE)
781 			log_debug("mouse %u,%u on pane %%%u", x, y, wp->id);
782 		else if (where == BORDER)
783 			log_debug("mouse on pane %%%u border", wp->id);
784 		m->wp = wp->id;
785 		m->w = wp->window->id;
786 	}
787 
788 	/* Stop dragging if needed. */
789 	if (type != DRAG && type != WHEEL && c->tty.mouse_drag_flag != 0) {
790 		if (c->tty.mouse_drag_release != NULL)
791 			c->tty.mouse_drag_release(c, m);
792 
793 		c->tty.mouse_drag_update = NULL;
794 		c->tty.mouse_drag_release = NULL;
795 
796 		/*
797 		 * End a mouse drag by passing a MouseDragEnd key corresponding
798 		 * to the button that started the drag.
799 		 */
800 		switch (c->tty.mouse_drag_flag - 1) {
801 		case MOUSE_BUTTON_1:
802 			if (where == PANE)
803 				key = KEYC_MOUSEDRAGEND1_PANE;
804 			if (where == STATUS)
805 				key = KEYC_MOUSEDRAGEND1_STATUS;
806 			if (where == STATUS_LEFT)
807 				key = KEYC_MOUSEDRAGEND1_STATUS_LEFT;
808 			if (where == STATUS_RIGHT)
809 				key = KEYC_MOUSEDRAGEND1_STATUS_RIGHT;
810 			if (where == STATUS_DEFAULT)
811 				key = KEYC_MOUSEDRAGEND1_STATUS_DEFAULT;
812 			if (where == BORDER)
813 				key = KEYC_MOUSEDRAGEND1_BORDER;
814 			break;
815 		case MOUSE_BUTTON_2:
816 			if (where == PANE)
817 				key = KEYC_MOUSEDRAGEND2_PANE;
818 			if (where == STATUS)
819 				key = KEYC_MOUSEDRAGEND2_STATUS;
820 			if (where == STATUS_LEFT)
821 				key = KEYC_MOUSEDRAGEND2_STATUS_LEFT;
822 			if (where == STATUS_RIGHT)
823 				key = KEYC_MOUSEDRAGEND2_STATUS_RIGHT;
824 			if (where == STATUS_DEFAULT)
825 				key = KEYC_MOUSEDRAGEND2_STATUS_DEFAULT;
826 			if (where == BORDER)
827 				key = KEYC_MOUSEDRAGEND2_BORDER;
828 			break;
829 		case MOUSE_BUTTON_3:
830 			if (where == PANE)
831 				key = KEYC_MOUSEDRAGEND3_PANE;
832 			if (where == STATUS)
833 				key = KEYC_MOUSEDRAGEND3_STATUS;
834 			if (where == STATUS_LEFT)
835 				key = KEYC_MOUSEDRAGEND3_STATUS_LEFT;
836 			if (where == STATUS_RIGHT)
837 				key = KEYC_MOUSEDRAGEND3_STATUS_RIGHT;
838 			if (where == STATUS_DEFAULT)
839 				key = KEYC_MOUSEDRAGEND3_STATUS_DEFAULT;
840 			if (where == BORDER)
841 				key = KEYC_MOUSEDRAGEND3_BORDER;
842 			break;
843 		case MOUSE_BUTTON_6:
844 			if (where == PANE)
845 				key = KEYC_MOUSEDRAGEND6_PANE;
846 			if (where == STATUS)
847 				key = KEYC_MOUSEDRAGEND6_STATUS;
848 			if (where == STATUS_LEFT)
849 				key = KEYC_MOUSEDRAGEND6_STATUS_LEFT;
850 			if (where == STATUS_RIGHT)
851 				key = KEYC_MOUSEDRAGEND6_STATUS_RIGHT;
852 			if (where == STATUS_DEFAULT)
853 				key = KEYC_MOUSEDRAGEND6_STATUS_DEFAULT;
854 			if (where == BORDER)
855 				key = KEYC_MOUSEDRAGEND6_BORDER;
856 			break;
857 		case MOUSE_BUTTON_7:
858 			if (where == PANE)
859 				key = KEYC_MOUSEDRAGEND7_PANE;
860 			if (where == STATUS)
861 				key = KEYC_MOUSEDRAGEND7_STATUS;
862 			if (where == STATUS_LEFT)
863 				key = KEYC_MOUSEDRAGEND7_STATUS_LEFT;
864 			if (where == STATUS_RIGHT)
865 				key = KEYC_MOUSEDRAGEND7_STATUS_RIGHT;
866 			if (where == STATUS_DEFAULT)
867 				key = KEYC_MOUSEDRAGEND7_STATUS_DEFAULT;
868 			if (where == BORDER)
869 				key = KEYC_MOUSEDRAGEND7_BORDER;
870 			break;
871 		case MOUSE_BUTTON_8:
872 			if (where == PANE)
873 				key = KEYC_MOUSEDRAGEND8_PANE;
874 			if (where == STATUS)
875 				key = KEYC_MOUSEDRAGEND8_STATUS;
876 			if (where == STATUS_LEFT)
877 				key = KEYC_MOUSEDRAGEND8_STATUS_LEFT;
878 			if (where == STATUS_RIGHT)
879 				key = KEYC_MOUSEDRAGEND8_STATUS_RIGHT;
880 			if (where == STATUS_DEFAULT)
881 				key = KEYC_MOUSEDRAGEND8_STATUS_DEFAULT;
882 			if (where == BORDER)
883 				key = KEYC_MOUSEDRAGEND8_BORDER;
884 			break;
885 		case MOUSE_BUTTON_9:
886 			if (where == PANE)
887 				key = KEYC_MOUSEDRAGEND9_PANE;
888 			if (where == STATUS)
889 				key = KEYC_MOUSEDRAGEND9_STATUS;
890 			if (where == STATUS_LEFT)
891 				key = KEYC_MOUSEDRAGEND9_STATUS_LEFT;
892 			if (where == STATUS_RIGHT)
893 				key = KEYC_MOUSEDRAGEND9_STATUS_RIGHT;
894 			if (where == STATUS_DEFAULT)
895 				key = KEYC_MOUSEDRAGEND9_STATUS_DEFAULT;
896 			if (where == BORDER)
897 				key = KEYC_MOUSEDRAGEND9_BORDER;
898 			break;
899 		case MOUSE_BUTTON_10:
900 			if (where == PANE)
901 				key = KEYC_MOUSEDRAGEND10_PANE;
902 			if (where == STATUS)
903 				key = KEYC_MOUSEDRAGEND10_STATUS;
904 			if (where == STATUS_LEFT)
905 				key = KEYC_MOUSEDRAGEND10_STATUS_LEFT;
906 			if (where == STATUS_RIGHT)
907 				key = KEYC_MOUSEDRAGEND10_STATUS_RIGHT;
908 			if (where == STATUS_DEFAULT)
909 				key = KEYC_MOUSEDRAGEND10_STATUS_DEFAULT;
910 			if (where == BORDER)
911 				key = KEYC_MOUSEDRAGEND10_BORDER;
912 			break;
913 		case MOUSE_BUTTON_11:
914 			if (where == PANE)
915 				key = KEYC_MOUSEDRAGEND11_PANE;
916 			if (where == STATUS)
917 				key = KEYC_MOUSEDRAGEND11_STATUS;
918 			if (where == STATUS_LEFT)
919 				key = KEYC_MOUSEDRAGEND11_STATUS_LEFT;
920 			if (where == STATUS_RIGHT)
921 				key = KEYC_MOUSEDRAGEND11_STATUS_RIGHT;
922 			if (where == STATUS_DEFAULT)
923 				key = KEYC_MOUSEDRAGEND11_STATUS_DEFAULT;
924 			if (where == BORDER)
925 				key = KEYC_MOUSEDRAGEND11_BORDER;
926 			break;
927 		default:
928 			key = KEYC_MOUSE;
929 			break;
930 		}
931 		c->tty.mouse_drag_flag = 0;
932 		goto out;
933 	}
934 
935 	/* Convert to a key binding. */
936 	key = KEYC_UNKNOWN;
937 	switch (type) {
938 	case NOTYPE:
939 		break;
940 	case MOVE:
941 		if (where == PANE)
942 			key = KEYC_MOUSEMOVE_PANE;
943 		if (where == STATUS)
944 			key = KEYC_MOUSEMOVE_STATUS;
945 		if (where == STATUS_LEFT)
946 			key = KEYC_MOUSEMOVE_STATUS_LEFT;
947 		if (where == STATUS_RIGHT)
948 			key = KEYC_MOUSEMOVE_STATUS_RIGHT;
949 		if (where == STATUS_DEFAULT)
950 			key = KEYC_MOUSEMOVE_STATUS_DEFAULT;
951 		if (where == BORDER)
952 			key = KEYC_MOUSEMOVE_BORDER;
953 		break;
954 	case DRAG:
955 		if (c->tty.mouse_drag_update != NULL)
956 			key = KEYC_DRAGGING;
957 		else {
958 			switch (MOUSE_BUTTONS(b)) {
959 			case MOUSE_BUTTON_1:
960 				if (where == PANE)
961 					key = KEYC_MOUSEDRAG1_PANE;
962 				if (where == STATUS)
963 					key = KEYC_MOUSEDRAG1_STATUS;
964 				if (where == STATUS_LEFT)
965 					key = KEYC_MOUSEDRAG1_STATUS_LEFT;
966 				if (where == STATUS_RIGHT)
967 					key = KEYC_MOUSEDRAG1_STATUS_RIGHT;
968 				if (where == STATUS_DEFAULT)
969 					key = KEYC_MOUSEDRAG1_STATUS_DEFAULT;
970 				if (where == BORDER)
971 					key = KEYC_MOUSEDRAG1_BORDER;
972 				break;
973 			case MOUSE_BUTTON_2:
974 				if (where == PANE)
975 					key = KEYC_MOUSEDRAG2_PANE;
976 				if (where == STATUS)
977 					key = KEYC_MOUSEDRAG2_STATUS;
978 				if (where == STATUS_LEFT)
979 					key = KEYC_MOUSEDRAG2_STATUS_LEFT;
980 				if (where == STATUS_RIGHT)
981 					key = KEYC_MOUSEDRAG2_STATUS_RIGHT;
982 				if (where == STATUS_DEFAULT)
983 					key = KEYC_MOUSEDRAG2_STATUS_DEFAULT;
984 				if (where == BORDER)
985 					key = KEYC_MOUSEDRAG2_BORDER;
986 				break;
987 			case MOUSE_BUTTON_3:
988 				if (where == PANE)
989 					key = KEYC_MOUSEDRAG3_PANE;
990 				if (where == STATUS)
991 					key = KEYC_MOUSEDRAG3_STATUS;
992 				if (where == STATUS_LEFT)
993 					key = KEYC_MOUSEDRAG3_STATUS_LEFT;
994 				if (where == STATUS_RIGHT)
995 					key = KEYC_MOUSEDRAG3_STATUS_RIGHT;
996 				if (where == STATUS_DEFAULT)
997 					key = KEYC_MOUSEDRAG3_STATUS_DEFAULT;
998 				if (where == BORDER)
999 					key = KEYC_MOUSEDRAG3_BORDER;
1000 				break;
1001 			case MOUSE_BUTTON_6:
1002 				if (where == PANE)
1003 					key = KEYC_MOUSEDRAG6_PANE;
1004 				if (where == STATUS)
1005 					key = KEYC_MOUSEDRAG6_STATUS;
1006 				if (where == STATUS_LEFT)
1007 					key = KEYC_MOUSEDRAG6_STATUS_LEFT;
1008 				if (where == STATUS_RIGHT)
1009 					key = KEYC_MOUSEDRAG6_STATUS_RIGHT;
1010 				if (where == STATUS_DEFAULT)
1011 					key = KEYC_MOUSEDRAG6_STATUS_DEFAULT;
1012 				if (where == BORDER)
1013 					key = KEYC_MOUSEDRAG6_BORDER;
1014 				break;
1015 			case MOUSE_BUTTON_7:
1016 				if (where == PANE)
1017 					key = KEYC_MOUSEDRAG7_PANE;
1018 				if (where == STATUS)
1019 					key = KEYC_MOUSEDRAG7_STATUS;
1020 				if (where == STATUS_LEFT)
1021 					key = KEYC_MOUSEDRAG7_STATUS_LEFT;
1022 				if (where == STATUS_RIGHT)
1023 					key = KEYC_MOUSEDRAG7_STATUS_RIGHT;
1024 				if (where == STATUS_DEFAULT)
1025 					key = KEYC_MOUSEDRAG7_STATUS_DEFAULT;
1026 				if (where == BORDER)
1027 					key = KEYC_MOUSEDRAG7_BORDER;
1028 				break;
1029 			case MOUSE_BUTTON_8:
1030 				if (where == PANE)
1031 					key = KEYC_MOUSEDRAG8_PANE;
1032 				if (where == STATUS)
1033 					key = KEYC_MOUSEDRAG8_STATUS;
1034 				if (where == STATUS_LEFT)
1035 					key = KEYC_MOUSEDRAG8_STATUS_LEFT;
1036 				if (where == STATUS_RIGHT)
1037 					key = KEYC_MOUSEDRAG8_STATUS_RIGHT;
1038 				if (where == STATUS_DEFAULT)
1039 					key = KEYC_MOUSEDRAG8_STATUS_DEFAULT;
1040 				if (where == BORDER)
1041 					key = KEYC_MOUSEDRAG8_BORDER;
1042 				break;
1043 			case MOUSE_BUTTON_9:
1044 				if (where == PANE)
1045 					key = KEYC_MOUSEDRAG9_PANE;
1046 				if (where == STATUS)
1047 					key = KEYC_MOUSEDRAG9_STATUS;
1048 				if (where == STATUS_LEFT)
1049 					key = KEYC_MOUSEDRAG9_STATUS_LEFT;
1050 				if (where == STATUS_RIGHT)
1051 					key = KEYC_MOUSEDRAG9_STATUS_RIGHT;
1052 				if (where == STATUS_DEFAULT)
1053 					key = KEYC_MOUSEDRAG9_STATUS_DEFAULT;
1054 				if (where == BORDER)
1055 					key = KEYC_MOUSEDRAG9_BORDER;
1056 				break;
1057 			case MOUSE_BUTTON_10:
1058 				if (where == PANE)
1059 					key = KEYC_MOUSEDRAG10_PANE;
1060 				if (where == STATUS)
1061 					key = KEYC_MOUSEDRAG10_STATUS;
1062 				if (where == STATUS_LEFT)
1063 					key = KEYC_MOUSEDRAG10_STATUS_LEFT;
1064 				if (where == STATUS_RIGHT)
1065 					key = KEYC_MOUSEDRAG10_STATUS_RIGHT;
1066 				if (where == STATUS_DEFAULT)
1067 					key = KEYC_MOUSEDRAG10_STATUS_DEFAULT;
1068 				if (where == BORDER)
1069 					key = KEYC_MOUSEDRAG10_BORDER;
1070 				break;
1071 			case MOUSE_BUTTON_11:
1072 				if (where == PANE)
1073 					key = KEYC_MOUSEDRAG11_PANE;
1074 				if (where == STATUS)
1075 					key = KEYC_MOUSEDRAG11_STATUS;
1076 				if (where == STATUS_LEFT)
1077 					key = KEYC_MOUSEDRAG11_STATUS_LEFT;
1078 				if (where == STATUS_RIGHT)
1079 					key = KEYC_MOUSEDRAG11_STATUS_RIGHT;
1080 				if (where == STATUS_DEFAULT)
1081 					key = KEYC_MOUSEDRAG11_STATUS_DEFAULT;
1082 				if (where == BORDER)
1083 					key = KEYC_MOUSEDRAG11_BORDER;
1084 				break;
1085 			}
1086 		}
1087 
1088 		/*
1089 		 * Begin a drag by setting the flag to a non-zero value that
1090 		 * corresponds to the mouse button in use.
1091 		 */
1092 		c->tty.mouse_drag_flag = MOUSE_BUTTONS(b) + 1;
1093 		break;
1094 	case WHEEL:
1095 		if (MOUSE_BUTTONS(b) == MOUSE_WHEEL_UP) {
1096 			if (where == PANE)
1097 				key = KEYC_WHEELUP_PANE;
1098 			if (where == STATUS)
1099 				key = KEYC_WHEELUP_STATUS;
1100 			if (where == STATUS_LEFT)
1101 				key = KEYC_WHEELUP_STATUS_LEFT;
1102 			if (where == STATUS_RIGHT)
1103 				key = KEYC_WHEELUP_STATUS_RIGHT;
1104 			if (where == STATUS_DEFAULT)
1105 				key = KEYC_WHEELUP_STATUS_DEFAULT;
1106 			if (where == BORDER)
1107 				key = KEYC_WHEELUP_BORDER;
1108 		} else {
1109 			if (where == PANE)
1110 				key = KEYC_WHEELDOWN_PANE;
1111 			if (where == STATUS)
1112 				key = KEYC_WHEELDOWN_STATUS;
1113 			if (where == STATUS_LEFT)
1114 				key = KEYC_WHEELDOWN_STATUS_LEFT;
1115 			if (where == STATUS_RIGHT)
1116 				key = KEYC_WHEELDOWN_STATUS_RIGHT;
1117 			if (where == STATUS_DEFAULT)
1118 				key = KEYC_WHEELDOWN_STATUS_DEFAULT;
1119 			if (where == BORDER)
1120 				key = KEYC_WHEELDOWN_BORDER;
1121 		}
1122 		break;
1123 	case UP:
1124 		switch (MOUSE_BUTTONS(b)) {
1125 		case MOUSE_BUTTON_1:
1126 			if (where == PANE)
1127 				key = KEYC_MOUSEUP1_PANE;
1128 			if (where == STATUS)
1129 				key = KEYC_MOUSEUP1_STATUS;
1130 			if (where == STATUS_LEFT)
1131 				key = KEYC_MOUSEUP1_STATUS_LEFT;
1132 			if (where == STATUS_RIGHT)
1133 				key = KEYC_MOUSEUP1_STATUS_RIGHT;
1134 			if (where == STATUS_DEFAULT)
1135 				key = KEYC_MOUSEUP1_STATUS_DEFAULT;
1136 			if (where == BORDER)
1137 				key = KEYC_MOUSEUP1_BORDER;
1138 			break;
1139 		case MOUSE_BUTTON_2:
1140 			if (where == PANE)
1141 				key = KEYC_MOUSEUP2_PANE;
1142 			if (where == STATUS)
1143 				key = KEYC_MOUSEUP2_STATUS;
1144 			if (where == STATUS_LEFT)
1145 				key = KEYC_MOUSEUP2_STATUS_LEFT;
1146 			if (where == STATUS_RIGHT)
1147 				key = KEYC_MOUSEUP2_STATUS_RIGHT;
1148 			if (where == STATUS_DEFAULT)
1149 				key = KEYC_MOUSEUP2_STATUS_DEFAULT;
1150 			if (where == BORDER)
1151 				key = KEYC_MOUSEUP2_BORDER;
1152 			break;
1153 		case MOUSE_BUTTON_3:
1154 			if (where == PANE)
1155 				key = KEYC_MOUSEUP3_PANE;
1156 			if (where == STATUS)
1157 				key = KEYC_MOUSEUP3_STATUS;
1158 			if (where == STATUS_LEFT)
1159 				key = KEYC_MOUSEUP3_STATUS_LEFT;
1160 			if (where == STATUS_RIGHT)
1161 				key = KEYC_MOUSEUP3_STATUS_RIGHT;
1162 			if (where == STATUS_DEFAULT)
1163 				key = KEYC_MOUSEUP3_STATUS_DEFAULT;
1164 			if (where == BORDER)
1165 				key = KEYC_MOUSEUP3_BORDER;
1166 			break;
1167 		case MOUSE_BUTTON_6:
1168 			if (where == PANE)
1169 				key = KEYC_MOUSEUP6_PANE;
1170 			if (where == STATUS)
1171 				key = KEYC_MOUSEUP6_STATUS;
1172 			if (where == STATUS_LEFT)
1173 				key = KEYC_MOUSEUP6_STATUS_LEFT;
1174 			if (where == STATUS_RIGHT)
1175 				key = KEYC_MOUSEUP6_STATUS_RIGHT;
1176 			if (where == STATUS_DEFAULT)
1177 				key = KEYC_MOUSEUP6_STATUS_DEFAULT;
1178 			if (where == BORDER)
1179 				key = KEYC_MOUSEUP6_BORDER;
1180 			break;
1181 		case MOUSE_BUTTON_7:
1182 			if (where == PANE)
1183 				key = KEYC_MOUSEUP7_PANE;
1184 			if (where == STATUS)
1185 				key = KEYC_MOUSEUP7_STATUS;
1186 			if (where == STATUS_LEFT)
1187 				key = KEYC_MOUSEUP7_STATUS_LEFT;
1188 			if (where == STATUS_RIGHT)
1189 				key = KEYC_MOUSEUP7_STATUS_RIGHT;
1190 			if (where == STATUS_DEFAULT)
1191 				key = KEYC_MOUSEUP7_STATUS_DEFAULT;
1192 			if (where == BORDER)
1193 				key = KEYC_MOUSEUP7_BORDER;
1194 			break;
1195 		case MOUSE_BUTTON_8:
1196 			if (where == PANE)
1197 				key = KEYC_MOUSEUP8_PANE;
1198 			if (where == STATUS)
1199 				key = KEYC_MOUSEUP8_STATUS;
1200 			if (where == STATUS_LEFT)
1201 				key = KEYC_MOUSEUP8_STATUS_LEFT;
1202 			if (where == STATUS_RIGHT)
1203 				key = KEYC_MOUSEUP8_STATUS_RIGHT;
1204 			if (where == STATUS_DEFAULT)
1205 				key = KEYC_MOUSEUP8_STATUS_DEFAULT;
1206 			if (where == BORDER)
1207 				key = KEYC_MOUSEUP8_BORDER;
1208 			break;
1209 		case MOUSE_BUTTON_9:
1210 			if (where == PANE)
1211 				key = KEYC_MOUSEUP9_PANE;
1212 			if (where == STATUS)
1213 				key = KEYC_MOUSEUP9_STATUS;
1214 			if (where == STATUS_LEFT)
1215 				key = KEYC_MOUSEUP9_STATUS_LEFT;
1216 			if (where == STATUS_RIGHT)
1217 				key = KEYC_MOUSEUP9_STATUS_RIGHT;
1218 			if (where == STATUS_DEFAULT)
1219 				key = KEYC_MOUSEUP9_STATUS_DEFAULT;
1220 			if (where == BORDER)
1221 				key = KEYC_MOUSEUP9_BORDER;
1222 			break;
1223 		case MOUSE_BUTTON_10:
1224 			if (where == PANE)
1225 				key = KEYC_MOUSEUP1_PANE;
1226 			if (where == STATUS)
1227 				key = KEYC_MOUSEUP1_STATUS;
1228 			if (where == STATUS_LEFT)
1229 				key = KEYC_MOUSEUP1_STATUS_LEFT;
1230 			if (where == STATUS_RIGHT)
1231 				key = KEYC_MOUSEUP1_STATUS_RIGHT;
1232 			if (where == STATUS_DEFAULT)
1233 				key = KEYC_MOUSEUP1_STATUS_DEFAULT;
1234 			if (where == BORDER)
1235 				key = KEYC_MOUSEUP1_BORDER;
1236 			break;
1237 		case MOUSE_BUTTON_11:
1238 			if (where == PANE)
1239 				key = KEYC_MOUSEUP11_PANE;
1240 			if (where == STATUS)
1241 				key = KEYC_MOUSEUP11_STATUS;
1242 			if (where == STATUS_LEFT)
1243 				key = KEYC_MOUSEUP11_STATUS_LEFT;
1244 			if (where == STATUS_RIGHT)
1245 				key = KEYC_MOUSEUP11_STATUS_RIGHT;
1246 			if (where == STATUS_DEFAULT)
1247 				key = KEYC_MOUSEUP11_STATUS_DEFAULT;
1248 			if (where == BORDER)
1249 				key = KEYC_MOUSEUP11_BORDER;
1250 			break;
1251 		}
1252 		break;
1253 	case DOWN:
1254 		switch (MOUSE_BUTTONS(b)) {
1255 		case MOUSE_BUTTON_1:
1256 			if (where == PANE)
1257 				key = KEYC_MOUSEDOWN1_PANE;
1258 			if (where == STATUS)
1259 				key = KEYC_MOUSEDOWN1_STATUS;
1260 			if (where == STATUS_LEFT)
1261 				key = KEYC_MOUSEDOWN1_STATUS_LEFT;
1262 			if (where == STATUS_RIGHT)
1263 				key = KEYC_MOUSEDOWN1_STATUS_RIGHT;
1264 			if (where == STATUS_DEFAULT)
1265 				key = KEYC_MOUSEDOWN1_STATUS_DEFAULT;
1266 			if (where == BORDER)
1267 				key = KEYC_MOUSEDOWN1_BORDER;
1268 			break;
1269 		case MOUSE_BUTTON_2:
1270 			if (where == PANE)
1271 				key = KEYC_MOUSEDOWN2_PANE;
1272 			if (where == STATUS)
1273 				key = KEYC_MOUSEDOWN2_STATUS;
1274 			if (where == STATUS_LEFT)
1275 				key = KEYC_MOUSEDOWN2_STATUS_LEFT;
1276 			if (where == STATUS_RIGHT)
1277 				key = KEYC_MOUSEDOWN2_STATUS_RIGHT;
1278 			if (where == STATUS_DEFAULT)
1279 				key = KEYC_MOUSEDOWN2_STATUS_DEFAULT;
1280 			if (where == BORDER)
1281 				key = KEYC_MOUSEDOWN2_BORDER;
1282 			break;
1283 		case MOUSE_BUTTON_3:
1284 			if (where == PANE)
1285 				key = KEYC_MOUSEDOWN3_PANE;
1286 			if (where == STATUS)
1287 				key = KEYC_MOUSEDOWN3_STATUS;
1288 			if (where == STATUS_LEFT)
1289 				key = KEYC_MOUSEDOWN3_STATUS_LEFT;
1290 			if (where == STATUS_RIGHT)
1291 				key = KEYC_MOUSEDOWN3_STATUS_RIGHT;
1292 			if (where == STATUS_DEFAULT)
1293 				key = KEYC_MOUSEDOWN3_STATUS_DEFAULT;
1294 			if (where == BORDER)
1295 				key = KEYC_MOUSEDOWN3_BORDER;
1296 			break;
1297 		case MOUSE_BUTTON_6:
1298 			if (where == PANE)
1299 				key = KEYC_MOUSEDOWN6_PANE;
1300 			if (where == STATUS)
1301 				key = KEYC_MOUSEDOWN6_STATUS;
1302 			if (where == STATUS_LEFT)
1303 				key = KEYC_MOUSEDOWN6_STATUS_LEFT;
1304 			if (where == STATUS_RIGHT)
1305 				key = KEYC_MOUSEDOWN6_STATUS_RIGHT;
1306 			if (where == STATUS_DEFAULT)
1307 				key = KEYC_MOUSEDOWN6_STATUS_DEFAULT;
1308 			if (where == BORDER)
1309 				key = KEYC_MOUSEDOWN6_BORDER;
1310 			break;
1311 		case MOUSE_BUTTON_7:
1312 			if (where == PANE)
1313 				key = KEYC_MOUSEDOWN7_PANE;
1314 			if (where == STATUS)
1315 				key = KEYC_MOUSEDOWN7_STATUS;
1316 			if (where == STATUS_LEFT)
1317 				key = KEYC_MOUSEDOWN7_STATUS_LEFT;
1318 			if (where == STATUS_RIGHT)
1319 				key = KEYC_MOUSEDOWN7_STATUS_RIGHT;
1320 			if (where == STATUS_DEFAULT)
1321 				key = KEYC_MOUSEDOWN7_STATUS_DEFAULT;
1322 			if (where == BORDER)
1323 				key = KEYC_MOUSEDOWN7_BORDER;
1324 			break;
1325 		case MOUSE_BUTTON_8:
1326 			if (where == PANE)
1327 				key = KEYC_MOUSEDOWN8_PANE;
1328 			if (where == STATUS)
1329 				key = KEYC_MOUSEDOWN8_STATUS;
1330 			if (where == STATUS_LEFT)
1331 				key = KEYC_MOUSEDOWN8_STATUS_LEFT;
1332 			if (where == STATUS_RIGHT)
1333 				key = KEYC_MOUSEDOWN8_STATUS_RIGHT;
1334 			if (where == STATUS_DEFAULT)
1335 				key = KEYC_MOUSEDOWN8_STATUS_DEFAULT;
1336 			if (where == BORDER)
1337 				key = KEYC_MOUSEDOWN8_BORDER;
1338 			break;
1339 		case MOUSE_BUTTON_9:
1340 			if (where == PANE)
1341 				key = KEYC_MOUSEDOWN9_PANE;
1342 			if (where == STATUS)
1343 				key = KEYC_MOUSEDOWN9_STATUS;
1344 			if (where == STATUS_LEFT)
1345 				key = KEYC_MOUSEDOWN9_STATUS_LEFT;
1346 			if (where == STATUS_RIGHT)
1347 				key = KEYC_MOUSEDOWN9_STATUS_RIGHT;
1348 			if (where == STATUS_DEFAULT)
1349 				key = KEYC_MOUSEDOWN9_STATUS_DEFAULT;
1350 			if (where == BORDER)
1351 				key = KEYC_MOUSEDOWN9_BORDER;
1352 			break;
1353 		case MOUSE_BUTTON_10:
1354 			if (where == PANE)
1355 				key = KEYC_MOUSEDOWN10_PANE;
1356 			if (where == STATUS)
1357 				key = KEYC_MOUSEDOWN10_STATUS;
1358 			if (where == STATUS_LEFT)
1359 				key = KEYC_MOUSEDOWN10_STATUS_LEFT;
1360 			if (where == STATUS_RIGHT)
1361 				key = KEYC_MOUSEDOWN10_STATUS_RIGHT;
1362 			if (where == STATUS_DEFAULT)
1363 				key = KEYC_MOUSEDOWN10_STATUS_DEFAULT;
1364 			if (where == BORDER)
1365 				key = KEYC_MOUSEDOWN10_BORDER;
1366 			break;
1367 		case MOUSE_BUTTON_11:
1368 			if (where == PANE)
1369 				key = KEYC_MOUSEDOWN11_PANE;
1370 			if (where == STATUS)
1371 				key = KEYC_MOUSEDOWN11_STATUS;
1372 			if (where == STATUS_LEFT)
1373 				key = KEYC_MOUSEDOWN11_STATUS_LEFT;
1374 			if (where == STATUS_RIGHT)
1375 				key = KEYC_MOUSEDOWN11_STATUS_RIGHT;
1376 			if (where == STATUS_DEFAULT)
1377 				key = KEYC_MOUSEDOWN11_STATUS_DEFAULT;
1378 			if (where == BORDER)
1379 				key = KEYC_MOUSEDOWN11_BORDER;
1380 			break;
1381 		}
1382 		break;
1383 	case SECOND:
1384 		switch (MOUSE_BUTTONS(b)) {
1385 		case MOUSE_BUTTON_1:
1386 			if (where == PANE)
1387 				key = KEYC_SECONDCLICK1_PANE;
1388 			if (where == STATUS)
1389 				key = KEYC_SECONDCLICK1_STATUS;
1390 			if (where == STATUS_LEFT)
1391 				key = KEYC_SECONDCLICK1_STATUS_LEFT;
1392 			if (where == STATUS_RIGHT)
1393 				key = KEYC_SECONDCLICK1_STATUS_RIGHT;
1394 			if (where == STATUS_DEFAULT)
1395 				key = KEYC_SECONDCLICK1_STATUS_DEFAULT;
1396 			if (where == BORDER)
1397 				key = KEYC_SECONDCLICK1_BORDER;
1398 			break;
1399 		case MOUSE_BUTTON_2:
1400 			if (where == PANE)
1401 				key = KEYC_SECONDCLICK2_PANE;
1402 			if (where == STATUS)
1403 				key = KEYC_SECONDCLICK2_STATUS;
1404 			if (where == STATUS_LEFT)
1405 				key = KEYC_SECONDCLICK2_STATUS_LEFT;
1406 			if (where == STATUS_RIGHT)
1407 				key = KEYC_SECONDCLICK2_STATUS_RIGHT;
1408 			if (where == STATUS_DEFAULT)
1409 				key = KEYC_SECONDCLICK2_STATUS_DEFAULT;
1410 			if (where == BORDER)
1411 				key = KEYC_SECONDCLICK2_BORDER;
1412 			break;
1413 		case MOUSE_BUTTON_3:
1414 			if (where == PANE)
1415 				key = KEYC_SECONDCLICK3_PANE;
1416 			if (where == STATUS)
1417 				key = KEYC_SECONDCLICK3_STATUS;
1418 			if (where == STATUS_LEFT)
1419 				key = KEYC_SECONDCLICK3_STATUS_LEFT;
1420 			if (where == STATUS_RIGHT)
1421 				key = KEYC_SECONDCLICK3_STATUS_RIGHT;
1422 			if (where == STATUS_DEFAULT)
1423 				key = KEYC_SECONDCLICK3_STATUS_DEFAULT;
1424 			if (where == BORDER)
1425 				key = KEYC_SECONDCLICK3_BORDER;
1426 			break;
1427 		case MOUSE_BUTTON_6:
1428 			if (where == PANE)
1429 				key = KEYC_SECONDCLICK6_PANE;
1430 			if (where == STATUS)
1431 				key = KEYC_SECONDCLICK6_STATUS;
1432 			if (where == STATUS_LEFT)
1433 				key = KEYC_SECONDCLICK6_STATUS_LEFT;
1434 			if (where == STATUS_RIGHT)
1435 				key = KEYC_SECONDCLICK6_STATUS_RIGHT;
1436 			if (where == STATUS_DEFAULT)
1437 				key = KEYC_SECONDCLICK6_STATUS_DEFAULT;
1438 			if (where == BORDER)
1439 				key = KEYC_SECONDCLICK6_BORDER;
1440 			break;
1441 		case MOUSE_BUTTON_7:
1442 			if (where == PANE)
1443 				key = KEYC_SECONDCLICK7_PANE;
1444 			if (where == STATUS)
1445 				key = KEYC_SECONDCLICK7_STATUS;
1446 			if (where == STATUS_LEFT)
1447 				key = KEYC_SECONDCLICK7_STATUS_LEFT;
1448 			if (where == STATUS_RIGHT)
1449 				key = KEYC_SECONDCLICK7_STATUS_RIGHT;
1450 			if (where == STATUS_DEFAULT)
1451 				key = KEYC_SECONDCLICK7_STATUS_DEFAULT;
1452 			if (where == BORDER)
1453 				key = KEYC_SECONDCLICK7_BORDER;
1454 			break;
1455 		case MOUSE_BUTTON_8:
1456 			if (where == PANE)
1457 				key = KEYC_SECONDCLICK8_PANE;
1458 			if (where == STATUS)
1459 				key = KEYC_SECONDCLICK8_STATUS;
1460 			if (where == STATUS_LEFT)
1461 				key = KEYC_SECONDCLICK8_STATUS_LEFT;
1462 			if (where == STATUS_RIGHT)
1463 				key = KEYC_SECONDCLICK8_STATUS_RIGHT;
1464 			if (where == STATUS_DEFAULT)
1465 				key = KEYC_SECONDCLICK8_STATUS_DEFAULT;
1466 			if (where == BORDER)
1467 				key = KEYC_SECONDCLICK8_BORDER;
1468 			break;
1469 		case MOUSE_BUTTON_9:
1470 			if (where == PANE)
1471 				key = KEYC_SECONDCLICK9_PANE;
1472 			if (where == STATUS)
1473 				key = KEYC_SECONDCLICK9_STATUS;
1474 			if (where == STATUS_LEFT)
1475 				key = KEYC_SECONDCLICK9_STATUS_LEFT;
1476 			if (where == STATUS_RIGHT)
1477 				key = KEYC_SECONDCLICK9_STATUS_RIGHT;
1478 			if (where == STATUS_DEFAULT)
1479 				key = KEYC_SECONDCLICK9_STATUS_DEFAULT;
1480 			if (where == BORDER)
1481 				key = KEYC_SECONDCLICK9_BORDER;
1482 			break;
1483 		case MOUSE_BUTTON_10:
1484 			if (where == PANE)
1485 				key = KEYC_SECONDCLICK10_PANE;
1486 			if (where == STATUS)
1487 				key = KEYC_SECONDCLICK10_STATUS;
1488 			if (where == STATUS_LEFT)
1489 				key = KEYC_SECONDCLICK10_STATUS_LEFT;
1490 			if (where == STATUS_RIGHT)
1491 				key = KEYC_SECONDCLICK10_STATUS_RIGHT;
1492 			if (where == STATUS_DEFAULT)
1493 				key = KEYC_SECONDCLICK10_STATUS_DEFAULT;
1494 			if (where == BORDER)
1495 				key = KEYC_SECONDCLICK10_BORDER;
1496 			break;
1497 		case MOUSE_BUTTON_11:
1498 			if (where == PANE)
1499 				key = KEYC_SECONDCLICK11_PANE;
1500 			if (where == STATUS)
1501 				key = KEYC_SECONDCLICK11_STATUS;
1502 			if (where == STATUS_LEFT)
1503 				key = KEYC_SECONDCLICK11_STATUS_LEFT;
1504 			if (where == STATUS_RIGHT)
1505 				key = KEYC_SECONDCLICK11_STATUS_RIGHT;
1506 			if (where == STATUS_DEFAULT)
1507 				key = KEYC_SECONDCLICK11_STATUS_DEFAULT;
1508 			if (where == BORDER)
1509 				key = KEYC_SECONDCLICK11_BORDER;
1510 			break;
1511 		}
1512 		break;
1513 	case DOUBLE:
1514 		switch (MOUSE_BUTTONS(b)) {
1515 		case MOUSE_BUTTON_1:
1516 			if (where == PANE)
1517 				key = KEYC_DOUBLECLICK1_PANE;
1518 			if (where == STATUS)
1519 				key = KEYC_DOUBLECLICK1_STATUS;
1520 			if (where == STATUS_LEFT)
1521 				key = KEYC_DOUBLECLICK1_STATUS_LEFT;
1522 			if (where == STATUS_RIGHT)
1523 				key = KEYC_DOUBLECLICK1_STATUS_RIGHT;
1524 			if (where == STATUS_DEFAULT)
1525 				key = KEYC_DOUBLECLICK1_STATUS_DEFAULT;
1526 			if (where == BORDER)
1527 				key = KEYC_DOUBLECLICK1_BORDER;
1528 			break;
1529 		case MOUSE_BUTTON_2:
1530 			if (where == PANE)
1531 				key = KEYC_DOUBLECLICK2_PANE;
1532 			if (where == STATUS)
1533 				key = KEYC_DOUBLECLICK2_STATUS;
1534 			if (where == STATUS_LEFT)
1535 				key = KEYC_DOUBLECLICK2_STATUS_LEFT;
1536 			if (where == STATUS_RIGHT)
1537 				key = KEYC_DOUBLECLICK2_STATUS_RIGHT;
1538 			if (where == STATUS_DEFAULT)
1539 				key = KEYC_DOUBLECLICK2_STATUS_DEFAULT;
1540 			if (where == BORDER)
1541 				key = KEYC_DOUBLECLICK2_BORDER;
1542 			break;
1543 		case MOUSE_BUTTON_3:
1544 			if (where == PANE)
1545 				key = KEYC_DOUBLECLICK3_PANE;
1546 			if (where == STATUS)
1547 				key = KEYC_DOUBLECLICK3_STATUS;
1548 			if (where == STATUS_LEFT)
1549 				key = KEYC_DOUBLECLICK3_STATUS_LEFT;
1550 			if (where == STATUS_RIGHT)
1551 				key = KEYC_DOUBLECLICK3_STATUS_RIGHT;
1552 			if (where == STATUS_DEFAULT)
1553 				key = KEYC_DOUBLECLICK3_STATUS_DEFAULT;
1554 			if (where == BORDER)
1555 				key = KEYC_DOUBLECLICK3_BORDER;
1556 			break;
1557 		case MOUSE_BUTTON_6:
1558 			if (where == PANE)
1559 				key = KEYC_DOUBLECLICK6_PANE;
1560 			if (where == STATUS)
1561 				key = KEYC_DOUBLECLICK6_STATUS;
1562 			if (where == STATUS_LEFT)
1563 				key = KEYC_DOUBLECLICK6_STATUS_LEFT;
1564 			if (where == STATUS_RIGHT)
1565 				key = KEYC_DOUBLECLICK6_STATUS_RIGHT;
1566 			if (where == STATUS_DEFAULT)
1567 				key = KEYC_DOUBLECLICK6_STATUS_DEFAULT;
1568 			if (where == BORDER)
1569 				key = KEYC_DOUBLECLICK6_BORDER;
1570 			break;
1571 		case MOUSE_BUTTON_7:
1572 			if (where == PANE)
1573 				key = KEYC_DOUBLECLICK7_PANE;
1574 			if (where == STATUS)
1575 				key = KEYC_DOUBLECLICK7_STATUS;
1576 			if (where == STATUS_LEFT)
1577 				key = KEYC_DOUBLECLICK7_STATUS_LEFT;
1578 			if (where == STATUS_RIGHT)
1579 				key = KEYC_DOUBLECLICK7_STATUS_RIGHT;
1580 			if (where == STATUS_DEFAULT)
1581 				key = KEYC_DOUBLECLICK7_STATUS_DEFAULT;
1582 			if (where == BORDER)
1583 				key = KEYC_DOUBLECLICK7_BORDER;
1584 			break;
1585 		case MOUSE_BUTTON_8:
1586 			if (where == PANE)
1587 				key = KEYC_DOUBLECLICK8_PANE;
1588 			if (where == STATUS)
1589 				key = KEYC_DOUBLECLICK8_STATUS;
1590 			if (where == STATUS_LEFT)
1591 				key = KEYC_DOUBLECLICK8_STATUS_LEFT;
1592 			if (where == STATUS_RIGHT)
1593 				key = KEYC_DOUBLECLICK8_STATUS_RIGHT;
1594 			if (where == STATUS_DEFAULT)
1595 				key = KEYC_DOUBLECLICK8_STATUS_DEFAULT;
1596 			if (where == BORDER)
1597 				key = KEYC_DOUBLECLICK8_BORDER;
1598 			break;
1599 		case MOUSE_BUTTON_9:
1600 			if (where == PANE)
1601 				key = KEYC_DOUBLECLICK9_PANE;
1602 			if (where == STATUS)
1603 				key = KEYC_DOUBLECLICK9_STATUS;
1604 			if (where == STATUS_LEFT)
1605 				key = KEYC_DOUBLECLICK9_STATUS_LEFT;
1606 			if (where == STATUS_RIGHT)
1607 				key = KEYC_DOUBLECLICK9_STATUS_RIGHT;
1608 			if (where == STATUS_DEFAULT)
1609 				key = KEYC_DOUBLECLICK9_STATUS_DEFAULT;
1610 			if (where == BORDER)
1611 				key = KEYC_DOUBLECLICK9_BORDER;
1612 			break;
1613 		case MOUSE_BUTTON_10:
1614 			if (where == PANE)
1615 				key = KEYC_DOUBLECLICK10_PANE;
1616 			if (where == STATUS)
1617 				key = KEYC_DOUBLECLICK10_STATUS;
1618 			if (where == STATUS_LEFT)
1619 				key = KEYC_DOUBLECLICK10_STATUS_LEFT;
1620 			if (where == STATUS_RIGHT)
1621 				key = KEYC_DOUBLECLICK10_STATUS_RIGHT;
1622 			if (where == STATUS_DEFAULT)
1623 				key = KEYC_DOUBLECLICK10_STATUS_DEFAULT;
1624 			if (where == BORDER)
1625 				key = KEYC_DOUBLECLICK10_BORDER;
1626 			break;
1627 		case MOUSE_BUTTON_11:
1628 			if (where == PANE)
1629 				key = KEYC_DOUBLECLICK11_PANE;
1630 			if (where == STATUS)
1631 				key = KEYC_DOUBLECLICK11_STATUS;
1632 			if (where == STATUS_LEFT)
1633 				key = KEYC_DOUBLECLICK11_STATUS_LEFT;
1634 			if (where == STATUS_RIGHT)
1635 				key = KEYC_DOUBLECLICK11_STATUS_RIGHT;
1636 			if (where == STATUS_DEFAULT)
1637 				key = KEYC_DOUBLECLICK11_STATUS_DEFAULT;
1638 			if (where == BORDER)
1639 				key = KEYC_DOUBLECLICK11_BORDER;
1640 			break;
1641 		}
1642 		break;
1643 	case TRIPLE:
1644 		switch (MOUSE_BUTTONS(b)) {
1645 		case MOUSE_BUTTON_1:
1646 			if (where == PANE)
1647 				key = KEYC_TRIPLECLICK1_PANE;
1648 			if (where == STATUS)
1649 				key = KEYC_TRIPLECLICK1_STATUS;
1650 			if (where == STATUS_LEFT)
1651 				key = KEYC_TRIPLECLICK1_STATUS_LEFT;
1652 			if (where == STATUS_RIGHT)
1653 				key = KEYC_TRIPLECLICK1_STATUS_RIGHT;
1654 			if (where == STATUS_DEFAULT)
1655 				key = KEYC_TRIPLECLICK1_STATUS_DEFAULT;
1656 			if (where == BORDER)
1657 				key = KEYC_TRIPLECLICK1_BORDER;
1658 			break;
1659 		case MOUSE_BUTTON_2:
1660 			if (where == PANE)
1661 				key = KEYC_TRIPLECLICK2_PANE;
1662 			if (where == STATUS)
1663 				key = KEYC_TRIPLECLICK2_STATUS;
1664 			if (where == STATUS_LEFT)
1665 				key = KEYC_TRIPLECLICK2_STATUS_LEFT;
1666 			if (where == STATUS_RIGHT)
1667 				key = KEYC_TRIPLECLICK2_STATUS_RIGHT;
1668 			if (where == STATUS_DEFAULT)
1669 				key = KEYC_TRIPLECLICK2_STATUS_DEFAULT;
1670 			if (where == BORDER)
1671 				key = KEYC_TRIPLECLICK2_BORDER;
1672 			break;
1673 		case MOUSE_BUTTON_3:
1674 			if (where == PANE)
1675 				key = KEYC_TRIPLECLICK3_PANE;
1676 			if (where == STATUS)
1677 				key = KEYC_TRIPLECLICK3_STATUS;
1678 			if (where == STATUS_LEFT)
1679 				key = KEYC_TRIPLECLICK3_STATUS_LEFT;
1680 			if (where == STATUS_RIGHT)
1681 				key = KEYC_TRIPLECLICK3_STATUS_RIGHT;
1682 			if (where == STATUS_DEFAULT)
1683 				key = KEYC_TRIPLECLICK3_STATUS_DEFAULT;
1684 			if (where == BORDER)
1685 				key = KEYC_TRIPLECLICK3_BORDER;
1686 			break;
1687 		case MOUSE_BUTTON_6:
1688 			if (where == PANE)
1689 				key = KEYC_TRIPLECLICK6_PANE;
1690 			if (where == STATUS)
1691 				key = KEYC_TRIPLECLICK6_STATUS;
1692 			if (where == STATUS_LEFT)
1693 				key = KEYC_TRIPLECLICK6_STATUS_LEFT;
1694 			if (where == STATUS_RIGHT)
1695 				key = KEYC_TRIPLECLICK6_STATUS_RIGHT;
1696 			if (where == STATUS_DEFAULT)
1697 				key = KEYC_TRIPLECLICK6_STATUS_DEFAULT;
1698 			if (where == BORDER)
1699 				key = KEYC_TRIPLECLICK6_BORDER;
1700 			break;
1701 		case MOUSE_BUTTON_7:
1702 			if (where == PANE)
1703 				key = KEYC_TRIPLECLICK7_PANE;
1704 			if (where == STATUS)
1705 				key = KEYC_TRIPLECLICK7_STATUS;
1706 			if (where == STATUS_LEFT)
1707 				key = KEYC_TRIPLECLICK7_STATUS_LEFT;
1708 			if (where == STATUS_RIGHT)
1709 				key = KEYC_TRIPLECLICK7_STATUS_RIGHT;
1710 			if (where == STATUS_DEFAULT)
1711 				key = KEYC_TRIPLECLICK7_STATUS_DEFAULT;
1712 			if (where == BORDER)
1713 				key = KEYC_TRIPLECLICK7_BORDER;
1714 			break;
1715 		case MOUSE_BUTTON_8:
1716 			if (where == PANE)
1717 				key = KEYC_TRIPLECLICK8_PANE;
1718 			if (where == STATUS)
1719 				key = KEYC_TRIPLECLICK8_STATUS;
1720 			if (where == STATUS_LEFT)
1721 				key = KEYC_TRIPLECLICK8_STATUS_LEFT;
1722 			if (where == STATUS_RIGHT)
1723 				key = KEYC_TRIPLECLICK8_STATUS_RIGHT;
1724 			if (where == STATUS_DEFAULT)
1725 				key = KEYC_TRIPLECLICK8_STATUS_DEFAULT;
1726 			if (where == BORDER)
1727 				key = KEYC_TRIPLECLICK8_BORDER;
1728 			break;
1729 		case MOUSE_BUTTON_9:
1730 			if (where == PANE)
1731 				key = KEYC_TRIPLECLICK9_PANE;
1732 			if (where == STATUS)
1733 				key = KEYC_TRIPLECLICK9_STATUS;
1734 			if (where == STATUS_LEFT)
1735 				key = KEYC_TRIPLECLICK9_STATUS_LEFT;
1736 			if (where == STATUS_RIGHT)
1737 				key = KEYC_TRIPLECLICK9_STATUS_RIGHT;
1738 			if (where == STATUS_DEFAULT)
1739 				key = KEYC_TRIPLECLICK9_STATUS_DEFAULT;
1740 			if (where == BORDER)
1741 				key = KEYC_TRIPLECLICK9_BORDER;
1742 			break;
1743 		case MOUSE_BUTTON_10:
1744 			if (where == PANE)
1745 				key = KEYC_TRIPLECLICK10_PANE;
1746 			if (where == STATUS)
1747 				key = KEYC_TRIPLECLICK10_STATUS;
1748 			if (where == STATUS_LEFT)
1749 				key = KEYC_TRIPLECLICK10_STATUS_LEFT;
1750 			if (where == STATUS_RIGHT)
1751 				key = KEYC_TRIPLECLICK10_STATUS_RIGHT;
1752 			if (where == STATUS_DEFAULT)
1753 				key = KEYC_TRIPLECLICK10_STATUS_DEFAULT;
1754 			if (where == BORDER)
1755 				key = KEYC_TRIPLECLICK10_BORDER;
1756 			break;
1757 		case MOUSE_BUTTON_11:
1758 			if (where == PANE)
1759 				key = KEYC_TRIPLECLICK11_PANE;
1760 			if (where == STATUS)
1761 				key = KEYC_TRIPLECLICK11_STATUS;
1762 			if (where == STATUS_LEFT)
1763 				key = KEYC_TRIPLECLICK11_STATUS_LEFT;
1764 			if (where == STATUS_RIGHT)
1765 				key = KEYC_TRIPLECLICK11_STATUS_RIGHT;
1766 			if (where == STATUS_DEFAULT)
1767 				key = KEYC_TRIPLECLICK11_STATUS_DEFAULT;
1768 			if (where == BORDER)
1769 				key = KEYC_TRIPLECLICK11_BORDER;
1770 			break;
1771 		}
1772 		break;
1773 	}
1774 	if (key == KEYC_UNKNOWN)
1775 		return (KEYC_UNKNOWN);
1776 
1777 out:
1778 	/* Apply modifiers if any. */
1779 	if (b & MOUSE_MASK_META)
1780 		key |= KEYC_META;
1781 	if (b & MOUSE_MASK_CTRL)
1782 		key |= KEYC_CTRL;
1783 	if (b & MOUSE_MASK_SHIFT)
1784 		key |= KEYC_SHIFT;
1785 
1786 	if (log_get_level() != 0)
1787 		log_debug("mouse key is %s", key_string_lookup_key (key, 1));
1788 	return (key);
1789 }
1790 
1791 /* Is this a bracket paste key? */
1792 static int
1793 server_client_is_bracket_pasting(struct client *c, key_code key)
1794 {
1795 	if (key == KEYC_PASTE_START) {
1796 		c->flags |= CLIENT_BRACKETPASTING;
1797 		log_debug("%s: bracket paste on", c->name);
1798 		return (1);
1799 	}
1800 
1801 	if (key == KEYC_PASTE_END) {
1802 		c->flags &= ~CLIENT_BRACKETPASTING;
1803 		log_debug("%s: bracket paste off", c->name);
1804 		return (1);
1805 	}
1806 
1807 	return !!(c->flags & CLIENT_BRACKETPASTING);
1808 }
1809 
1810 /* Is this fast enough to probably be a paste? */
1811 static int
1812 server_client_assume_paste(struct session *s)
1813 {
1814 	struct timeval	tv;
1815 	int		t;
1816 
1817 	if ((t = options_get_number(s->options, "assume-paste-time")) == 0)
1818 		return (0);
1819 
1820 	timersub(&s->activity_time, &s->last_activity_time, &tv);
1821 	if (tv.tv_sec == 0 && tv.tv_usec < t * 1000) {
1822 		log_debug("session %s pasting (flag %d)", s->name,
1823 		    !!(s->flags & SESSION_PASTING));
1824 		if (s->flags & SESSION_PASTING)
1825 			return (1);
1826 		s->flags |= SESSION_PASTING;
1827 		return (0);
1828 	}
1829 	log_debug("session %s not pasting", s->name);
1830 	s->flags &= ~SESSION_PASTING;
1831 	return (0);
1832 }
1833 
1834 /* Has the latest client changed? */
1835 static void
1836 server_client_update_latest(struct client *c)
1837 {
1838 	struct window	*w;
1839 
1840 	if (c->session == NULL)
1841 		return;
1842 	w = c->session->curw->window;
1843 
1844 	if (w->latest == c)
1845 		return;
1846 	w->latest = c;
1847 
1848 	if (options_get_number(w->options, "window-size") == WINDOW_SIZE_LATEST)
1849 		recalculate_size(w, 0);
1850 
1851 	notify_client("client-active", c);
1852 }
1853 
1854 /*
1855  * Handle data key input from client. This owns and can modify the key event it
1856  * is given and is responsible for freeing it.
1857  */
1858 static enum cmd_retval
1859 server_client_key_callback(struct cmdq_item *item, void *data)
1860 {
1861 	struct client			*c = cmdq_get_client(item);
1862 	struct key_event		*event = data;
1863 	key_code			 key = event->key;
1864 	struct mouse_event		*m = &event->m;
1865 	struct session			*s = c->session;
1866 	struct winlink			*wl;
1867 	struct window_pane		*wp;
1868 	struct window_mode_entry	*wme;
1869 	struct timeval			 tv;
1870 	struct key_table		*table, *first;
1871 	struct key_binding		*bd;
1872 	int				 xtimeout;
1873 	uint64_t			 flags;
1874 	struct cmd_find_state		 fs;
1875 	key_code			 key0, prefix, prefix2;
1876 
1877 	/* Check the client is good to accept input. */
1878 	if (s == NULL || (c->flags & CLIENT_UNATTACHEDFLAGS))
1879 		goto out;
1880 	wl = s->curw;
1881 
1882 	/* Update the activity timer. */
1883 	if (gettimeofday(&c->activity_time, NULL) != 0)
1884 		fatal("gettimeofday failed");
1885 	session_update_activity(s, &c->activity_time);
1886 
1887 	/* Check for mouse keys. */
1888 	m->valid = 0;
1889 	if (key == KEYC_MOUSE || key == KEYC_DOUBLECLICK) {
1890 		if (c->flags & CLIENT_READONLY)
1891 			goto out;
1892 		key = server_client_check_mouse(c, event);
1893 		if (key == KEYC_UNKNOWN)
1894 			goto out;
1895 
1896 		m->valid = 1;
1897 		m->key = key;
1898 
1899 		/*
1900 		 * Mouse drag is in progress, so fire the callback (now that
1901 		 * the mouse event is valid).
1902 		 */
1903 		if ((key & KEYC_MASK_KEY) == KEYC_DRAGGING) {
1904 			c->tty.mouse_drag_update(c, m);
1905 			goto out;
1906 		}
1907 		event->key = key;
1908 	}
1909 
1910 	/* Find affected pane. */
1911 	if (!KEYC_IS_MOUSE(key) || cmd_find_from_mouse(&fs, m, 0) != 0)
1912 		cmd_find_from_client(&fs, c, 0);
1913 	wp = fs.wp;
1914 
1915 	/* Forward mouse keys if disabled. */
1916 	if (KEYC_IS_MOUSE(key) && !options_get_number(s->options, "mouse"))
1917 		goto forward_key;
1918 
1919 	/* Forward if bracket pasting. */
1920 	if (server_client_is_bracket_pasting(c, key))
1921 		goto forward_key;
1922 
1923 	/* Treat everything as a regular key when pasting is detected. */
1924 	if (!KEYC_IS_MOUSE(key) &&
1925 	    (~key & KEYC_SENT) &&
1926 	    server_client_assume_paste(s))
1927 		goto forward_key;
1928 
1929 	/*
1930 	 * Work out the current key table. If the pane is in a mode, use
1931 	 * the mode table instead of the default key table.
1932 	 */
1933 	if (server_client_is_default_key_table(c, c->keytable) &&
1934 	    wp != NULL &&
1935 	    (wme = TAILQ_FIRST(&wp->modes)) != NULL &&
1936 	    wme->mode->key_table != NULL)
1937 		table = key_bindings_get_table(wme->mode->key_table(wme), 1);
1938 	else
1939 		table = c->keytable;
1940 	first = table;
1941 
1942 table_changed:
1943 	/*
1944 	 * The prefix always takes precedence and forces a switch to the prefix
1945 	 * table, unless we are already there.
1946 	 */
1947 	prefix = (key_code)options_get_number(s->options, "prefix");
1948 	prefix2 = (key_code)options_get_number(s->options, "prefix2");
1949 	key0 = (key & (KEYC_MASK_KEY|KEYC_MASK_MODIFIERS));
1950 	if ((key0 == (prefix & (KEYC_MASK_KEY|KEYC_MASK_MODIFIERS)) ||
1951 	    key0 == (prefix2 & (KEYC_MASK_KEY|KEYC_MASK_MODIFIERS))) &&
1952 	    strcmp(table->name, "prefix") != 0) {
1953 		server_client_set_key_table(c, "prefix");
1954 		server_status_client(c);
1955 		goto out;
1956 	}
1957 	flags = c->flags;
1958 
1959 try_again:
1960 	/* Log key table. */
1961 	if (wp == NULL)
1962 		log_debug("key table %s (no pane)", table->name);
1963 	else
1964 		log_debug("key table %s (pane %%%u)", table->name, wp->id);
1965 	if (c->flags & CLIENT_REPEAT)
1966 		log_debug("currently repeating");
1967 
1968 	/* Try to see if there is a key binding in the current table. */
1969 	bd = key_bindings_get(table, key0);
1970 	if (bd != NULL) {
1971 		/*
1972 		 * Key was matched in this table. If currently repeating but a
1973 		 * non-repeating binding was found, stop repeating and try
1974 		 * again in the root table.
1975 		 */
1976 		if ((c->flags & CLIENT_REPEAT) &&
1977 		    (~bd->flags & KEY_BINDING_REPEAT)) {
1978 			log_debug("found in key table %s (not repeating)",
1979 			    table->name);
1980 			server_client_set_key_table(c, NULL);
1981 			first = table = c->keytable;
1982 			c->flags &= ~CLIENT_REPEAT;
1983 			server_status_client(c);
1984 			goto table_changed;
1985 		}
1986 		log_debug("found in key table %s", table->name);
1987 
1988 		/*
1989 		 * Take a reference to this table to make sure the key binding
1990 		 * doesn't disappear.
1991 		 */
1992 		table->references++;
1993 
1994 		/*
1995 		 * If this is a repeating key, start the timer. Otherwise reset
1996 		 * the client back to the root table.
1997 		 */
1998 		xtimeout = options_get_number(s->options, "repeat-time");
1999 		if (xtimeout != 0 && (bd->flags & KEY_BINDING_REPEAT)) {
2000 			c->flags |= CLIENT_REPEAT;
2001 
2002 			tv.tv_sec = xtimeout / 1000;
2003 			tv.tv_usec = (xtimeout % 1000) * 1000L;
2004 			evtimer_del(&c->repeat_timer);
2005 			evtimer_add(&c->repeat_timer, &tv);
2006 		} else {
2007 			c->flags &= ~CLIENT_REPEAT;
2008 			server_client_set_key_table(c, NULL);
2009 		}
2010 		server_status_client(c);
2011 
2012 		/* Execute the key binding. */
2013 		key_bindings_dispatch(bd, item, c, event, &fs);
2014 		key_bindings_unref_table(table);
2015 		goto out;
2016 	}
2017 
2018 	/*
2019 	 * No match, try the ANY key.
2020 	 */
2021 	if (key0 != KEYC_ANY) {
2022 		key0 = KEYC_ANY;
2023 		goto try_again;
2024 	}
2025 
2026 	/*
2027 	 * No match in this table. If not in the root table or if repeating,
2028 	 * switch the client back to the root table and try again.
2029 	 */
2030 	log_debug("not found in key table %s", table->name);
2031 	if (!server_client_is_default_key_table(c, table) ||
2032 	    (c->flags & CLIENT_REPEAT)) {
2033 		log_debug("trying in root table");
2034 		server_client_set_key_table(c, NULL);
2035 		table = c->keytable;
2036 		if (c->flags & CLIENT_REPEAT)
2037 			first = table;
2038 		c->flags &= ~CLIENT_REPEAT;
2039 		server_status_client(c);
2040 		goto table_changed;
2041 	}
2042 
2043 	/*
2044 	 * No match in the root table either. If this wasn't the first table
2045 	 * tried, don't pass the key to the pane.
2046 	 */
2047 	if (first != table && (~flags & CLIENT_REPEAT)) {
2048 		server_client_set_key_table(c, NULL);
2049 		server_status_client(c);
2050 		goto out;
2051 	}
2052 
2053 forward_key:
2054 	if (c->flags & CLIENT_READONLY)
2055 		goto out;
2056 	if (wp != NULL)
2057 		window_pane_key(wp, c, s, wl, key, m);
2058 
2059 out:
2060 	if (s != NULL && key != KEYC_FOCUS_OUT)
2061 		server_client_update_latest(c);
2062 	free(event);
2063 	return (CMD_RETURN_NORMAL);
2064 }
2065 
2066 /* Handle a key event. */
2067 int
2068 server_client_handle_key(struct client *c, struct key_event *event)
2069 {
2070 	struct session		*s = c->session;
2071 	struct cmdq_item	*item;
2072 
2073 	/* Check the client is good to accept input. */
2074 	if (s == NULL || (c->flags & CLIENT_UNATTACHEDFLAGS))
2075 		return (0);
2076 
2077 	/*
2078 	 * Key presses in overlay mode and the command prompt are a special
2079 	 * case. The queue might be blocked so they need to be processed
2080 	 * immediately rather than queued.
2081 	 */
2082 	if (~c->flags & CLIENT_READONLY) {
2083 		if (c->message_string != NULL) {
2084 			if (c->message_ignore_keys)
2085 				return (0);
2086 			status_message_clear(c);
2087 		}
2088 		if (c->overlay_key != NULL) {
2089 			switch (c->overlay_key(c, c->overlay_data, event)) {
2090 			case 0:
2091 				return (0);
2092 			case 1:
2093 				server_client_clear_overlay(c);
2094 				return (0);
2095 			}
2096 		}
2097 		server_client_clear_overlay(c);
2098 		if (c->prompt_string != NULL) {
2099 			if (status_prompt_key(c, event->key) == 0)
2100 				return (0);
2101 		}
2102 	}
2103 
2104 	/*
2105 	 * Add the key to the queue so it happens after any commands queued by
2106 	 * previous keys.
2107 	 */
2108 	item = cmdq_get_callback(server_client_key_callback, event);
2109 	cmdq_append(c, item);
2110 	return (1);
2111 }
2112 
2113 /* Client functions that need to happen every loop. */
2114 void
2115 server_client_loop(void)
2116 {
2117 	struct client		*c;
2118 	struct window		*w;
2119 	struct window_pane	*wp;
2120 
2121 	/* Check for window resize. This is done before redrawing. */
2122 	RB_FOREACH(w, windows, &windows)
2123 		server_client_check_window_resize(w);
2124 
2125 	/* Check clients. */
2126 	TAILQ_FOREACH(c, &clients, entry) {
2127 		server_client_check_exit(c);
2128 		if (c->session != NULL) {
2129 			server_client_check_modes(c);
2130 			server_client_check_redraw(c);
2131 			server_client_reset_state(c);
2132 		}
2133 	}
2134 
2135 	/*
2136 	 * Any windows will have been redrawn as part of clients, so clear
2137 	 * their flags now.
2138 	 */
2139 	RB_FOREACH(w, windows, &windows) {
2140 		TAILQ_FOREACH(wp, &w->panes, entry) {
2141 			if (wp->fd != -1) {
2142 				server_client_check_pane_resize(wp);
2143 				server_client_check_pane_buffer(wp);
2144 			}
2145 			wp->flags &= ~PANE_REDRAW;
2146 		}
2147 		check_window_name(w);
2148 	}
2149 }
2150 
2151 /* Check if window needs to be resized. */
2152 static void
2153 server_client_check_window_resize(struct window *w)
2154 {
2155 	struct winlink	*wl;
2156 
2157 	if (~w->flags & WINDOW_RESIZE)
2158 		return;
2159 
2160 	TAILQ_FOREACH(wl, &w->winlinks, wentry) {
2161 		if (wl->session->attached != 0 && wl->session->curw == wl)
2162 			break;
2163 	}
2164 	if (wl == NULL)
2165 		return;
2166 
2167 	log_debug("%s: resizing window @%u", __func__, w->id);
2168 	resize_window(w, w->new_sx, w->new_sy, w->new_xpixel, w->new_ypixel);
2169 }
2170 
2171 /* Resize timer event. */
2172 static void
2173 server_client_resize_timer(__unused int fd, __unused short events, void *data)
2174 {
2175 	struct window_pane	*wp = data;
2176 
2177 	log_debug("%s: %%%u resize timer expired", __func__, wp->id);
2178 	evtimer_del(&wp->resize_timer);
2179 }
2180 
2181 /* Check if pane should be resized. */
2182 static void
2183 server_client_check_pane_resize(struct window_pane *wp)
2184 {
2185 	struct window_pane_resize	*r;
2186 	struct window_pane_resize	*r1;
2187 	struct window_pane_resize	*first;
2188 	struct window_pane_resize	*last;
2189 	struct timeval			 tv = { .tv_usec = 250000 };
2190 
2191 	if (TAILQ_EMPTY(&wp->resize_queue))
2192 		return;
2193 
2194 	if (!event_initialized(&wp->resize_timer))
2195 		evtimer_set(&wp->resize_timer, server_client_resize_timer, wp);
2196 	if (evtimer_pending(&wp->resize_timer, NULL))
2197 		return;
2198 
2199 	log_debug("%s: %%%u needs to be resized", __func__, wp->id);
2200 	TAILQ_FOREACH(r, &wp->resize_queue, entry) {
2201 		log_debug("queued resize: %ux%u -> %ux%u", r->osx, r->osy,
2202 		    r->sx, r->sy);
2203 	}
2204 
2205 	/*
2206 	 * There are three cases that matter:
2207 	 *
2208 	 * - Only one resize. It can just be applied.
2209 	 *
2210 	 * - Multiple resizes and the ending size is different from the
2211 	 *   starting size. We can discard all resizes except the most recent.
2212 	 *
2213 	 * - Multiple resizes and the ending size is the same as the starting
2214 	 *   size. We must resize at least twice to force the application to
2215 	 *   redraw. So apply the first and leave the last on the queue for
2216 	 *   next time.
2217 	 */
2218 	first = TAILQ_FIRST(&wp->resize_queue);
2219 	last = TAILQ_LAST(&wp->resize_queue, window_pane_resizes);
2220 	if (first == last) {
2221 		/* Only one resize. */
2222 		window_pane_send_resize(wp, first->sx, first->sy);
2223 		TAILQ_REMOVE(&wp->resize_queue, first, entry);
2224 		free(first);
2225 	} else if (last->sx != first->osx || last->sy != first->osy) {
2226 		/* Multiple resizes ending up with a different size. */
2227 		window_pane_send_resize(wp, last->sx, last->sy);
2228 		TAILQ_FOREACH_SAFE(r, &wp->resize_queue, entry, r1) {
2229 			TAILQ_REMOVE(&wp->resize_queue, r, entry);
2230 			free(r);
2231 		}
2232 	} else {
2233 		/*
2234 		 * Multiple resizes ending up with the same size. There will
2235 		 * not be more than one to the same size in succession so we
2236 		 * can just use the last-but-one on the list and leave the last
2237 		 * for later. We reduce the time until the next check to avoid
2238 		 * a long delay between the resizes.
2239 		 */
2240 		r = TAILQ_PREV(last, window_pane_resizes, entry);
2241 		window_pane_send_resize(wp, r->sx, r->sy);
2242 		TAILQ_FOREACH_SAFE(r, &wp->resize_queue, entry, r1) {
2243 			if (r == last)
2244 				break;
2245 			TAILQ_REMOVE(&wp->resize_queue, r, entry);
2246 			free(r);
2247 		}
2248 		tv.tv_usec = 10000;
2249 	}
2250 	evtimer_add(&wp->resize_timer, &tv);
2251 }
2252 
2253 /* Check pane buffer size. */
2254 static void
2255 server_client_check_pane_buffer(struct window_pane *wp)
2256 {
2257 	struct evbuffer			*evb = wp->event->input;
2258 	size_t				 minimum;
2259 	struct client			*c;
2260 	struct window_pane_offset	*wpo;
2261 	int				 off = 1, flag;
2262 	u_int				 attached_clients = 0;
2263 	size_t				 new_size;
2264 
2265 	/*
2266 	 * Work out the minimum used size. This is the most that can be removed
2267 	 * from the buffer.
2268 	 */
2269 	minimum = wp->offset.used;
2270 	if (wp->pipe_fd != -1 && wp->pipe_offset.used < minimum)
2271 		minimum = wp->pipe_offset.used;
2272 	TAILQ_FOREACH(c, &clients, entry) {
2273 		if (c->session == NULL)
2274 			continue;
2275 		attached_clients++;
2276 
2277 		if (~c->flags & CLIENT_CONTROL) {
2278 			off = 0;
2279 			continue;
2280 		}
2281 		wpo = control_pane_offset(c, wp, &flag);
2282 		if (wpo == NULL) {
2283 			if (!flag)
2284 				off = 0;
2285 			continue;
2286 		}
2287 		if (!flag)
2288 			off = 0;
2289 
2290 		window_pane_get_new_data(wp, wpo, &new_size);
2291 		log_debug("%s: %s has %zu bytes used and %zu left for %%%u",
2292 		    __func__, c->name, wpo->used - wp->base_offset, new_size,
2293 		    wp->id);
2294 		if (wpo->used < minimum)
2295 			minimum = wpo->used;
2296 	}
2297 	if (attached_clients == 0)
2298 		off = 0;
2299 	minimum -= wp->base_offset;
2300 	if (minimum == 0)
2301 		goto out;
2302 
2303 	/* Drain the buffer. */
2304 	log_debug("%s: %%%u has %zu minimum (of %zu) bytes used", __func__,
2305 	    wp->id, minimum, EVBUFFER_LENGTH(evb));
2306 	evbuffer_drain(evb, minimum);
2307 
2308 	/*
2309 	 * Adjust the base offset. If it would roll over, all the offsets into
2310 	 * the buffer need to be adjusted.
2311 	 */
2312 	if (wp->base_offset > SIZE_MAX - minimum) {
2313 		log_debug("%s: %%%u base offset has wrapped", __func__, wp->id);
2314 		wp->offset.used -= wp->base_offset;
2315 		if (wp->pipe_fd != -1)
2316 			wp->pipe_offset.used -= wp->base_offset;
2317 		TAILQ_FOREACH(c, &clients, entry) {
2318 			if (c->session == NULL || (~c->flags & CLIENT_CONTROL))
2319 				continue;
2320 			wpo = control_pane_offset(c, wp, &flag);
2321 			if (wpo != NULL && !flag)
2322 				wpo->used -= wp->base_offset;
2323 		}
2324 		wp->base_offset = minimum;
2325 	} else
2326 		wp->base_offset += minimum;
2327 
2328 out:
2329 	/*
2330 	 * If there is data remaining, and there are no clients able to consume
2331 	 * it, do not read any more. This is true when there are attached
2332 	 * clients, all of which are control clients which are not able to
2333 	 * accept any more data.
2334 	 */
2335 	log_debug("%s: pane %%%u is %s", __func__, wp->id, off ? "off" : "on");
2336 	if (off)
2337 		bufferevent_disable(wp->event, EV_READ);
2338 	else
2339 		bufferevent_enable(wp->event, EV_READ);
2340 }
2341 
2342 /*
2343  * Update cursor position and mode settings. The scroll region and attributes
2344  * are cleared when idle (waiting for an event) as this is the most likely time
2345  * a user may interrupt tmux, for example with ~^Z in ssh(1). This is a
2346  * compromise between excessive resets and likelihood of an interrupt.
2347  *
2348  * tty_region/tty_reset/tty_update_mode already take care of not resetting
2349  * things that are already in their default state.
2350  */
2351 static void
2352 server_client_reset_state(struct client *c)
2353 {
2354 	struct tty		*tty = &c->tty;
2355 	struct window		*w = c->session->curw->window;
2356 	struct window_pane	*wp = server_client_get_pane(c), *loop;
2357 	struct screen		*s = NULL;
2358 	struct options		*oo = c->session->options;
2359 	int			 mode = 0, cursor, flags, n;
2360 	u_int			 cx = 0, cy = 0, ox, oy, sx, sy;
2361 
2362 	if (c->flags & (CLIENT_CONTROL|CLIENT_SUSPENDED))
2363 		return;
2364 
2365 	/* Disable the block flag. */
2366 	flags = (tty->flags & TTY_BLOCK);
2367 	tty->flags &= ~TTY_BLOCK;
2368 
2369 	/* Get mode from overlay if any, else from screen. */
2370 	if (c->overlay_draw != NULL) {
2371 		if (c->overlay_mode != NULL)
2372 			s = c->overlay_mode(c, c->overlay_data, &cx, &cy);
2373 	} else
2374 		s = wp->screen;
2375 	if (s != NULL)
2376 		mode = s->mode;
2377 	if (log_get_level() != 0) {
2378 		log_debug("%s: client %s mode %s", __func__, c->name,
2379 		    screen_mode_to_string(mode));
2380 	}
2381 
2382 	/* Reset region and margin. */
2383 	tty_region_off(tty);
2384 	tty_margin_off(tty);
2385 
2386 	/* Move cursor to pane cursor and offset. */
2387 	if (c->prompt_string != NULL) {
2388 		n = options_get_number(c->session->options, "status-position");
2389 		if (n == 0)
2390 			cy = 0;
2391 		else {
2392 			n = status_line_size(c);
2393 			if (n == 0)
2394 				cy = tty->sy - 1;
2395 			else
2396 				cy = tty->sy - n;
2397 		}
2398 		cx = c->prompt_cursor;
2399 		mode &= ~MODE_CURSOR;
2400 	} else if (c->overlay_draw == NULL) {
2401 		cursor = 0;
2402 		tty_window_offset(tty, &ox, &oy, &sx, &sy);
2403 		if (wp->xoff + s->cx >= ox && wp->xoff + s->cx <= ox + sx &&
2404 		    wp->yoff + s->cy >= oy && wp->yoff + s->cy <= oy + sy) {
2405 			cursor = 1;
2406 
2407 			cx = wp->xoff + s->cx - ox;
2408 			cy = wp->yoff + s->cy - oy;
2409 
2410 			if (status_at_line(c) == 0)
2411 				cy += status_line_size(c);
2412 		}
2413 		if (!cursor)
2414 			mode &= ~MODE_CURSOR;
2415 	}
2416 	log_debug("%s: cursor to %u,%u", __func__, cx, cy);
2417 	tty_cursor(tty, cx, cy);
2418 
2419 	/*
2420 	 * Set mouse mode if requested. To support dragging, always use button
2421 	 * mode.
2422 	 */
2423 	if (options_get_number(oo, "mouse")) {
2424 		if (c->overlay_draw == NULL) {
2425 			mode &= ~ALL_MOUSE_MODES;
2426 			TAILQ_FOREACH(loop, &w->panes, entry) {
2427 				if (loop->screen->mode & MODE_MOUSE_ALL)
2428 					mode |= MODE_MOUSE_ALL;
2429 			}
2430 		}
2431 		if (~mode & MODE_MOUSE_ALL)
2432 			mode |= MODE_MOUSE_BUTTON;
2433 	}
2434 
2435 	/* Clear bracketed paste mode if at the prompt. */
2436 	if (c->overlay_draw == NULL && c->prompt_string != NULL)
2437 		mode &= ~MODE_BRACKETPASTE;
2438 
2439 	/* Set the terminal mode and reset attributes. */
2440 	tty_update_mode(tty, mode, s);
2441 	tty_reset(tty);
2442 
2443 	/* All writing must be done, send a sync end (if it was started). */
2444 	tty_sync_end(tty);
2445 	tty->flags |= flags;
2446 }
2447 
2448 /* Repeat time callback. */
2449 static void
2450 server_client_repeat_timer(__unused int fd, __unused short events, void *data)
2451 {
2452 	struct client	*c = data;
2453 
2454 	if (c->flags & CLIENT_REPEAT) {
2455 		server_client_set_key_table(c, NULL);
2456 		c->flags &= ~CLIENT_REPEAT;
2457 		server_status_client(c);
2458 	}
2459 }
2460 
2461 /* Double-click callback. */
2462 static void
2463 server_client_click_timer(__unused int fd, __unused short events, void *data)
2464 {
2465 	struct client		*c = data;
2466 	struct key_event	*event;
2467 
2468 	log_debug("click timer expired");
2469 
2470 	if (c->flags & CLIENT_TRIPLECLICK) {
2471 		/*
2472 		 * Waiting for a third click that hasn't happened, so this must
2473 		 * have been a double click.
2474 		 */
2475 		event = xmalloc(sizeof *event);
2476 		event->key = KEYC_DOUBLECLICK;
2477 		memcpy(&event->m, &c->click_event, sizeof event->m);
2478 		if (!server_client_handle_key(c, event))
2479 			free(event);
2480 	}
2481 	c->flags &= ~(CLIENT_DOUBLECLICK|CLIENT_TRIPLECLICK);
2482 }
2483 
2484 /* Check if client should be exited. */
2485 static void
2486 server_client_check_exit(struct client *c)
2487 {
2488 	struct client_file	*cf;
2489 	const char		*name = c->exit_session;
2490 	char			*data;
2491 	size_t			 size, msize;
2492 
2493 	if (c->flags & (CLIENT_DEAD|CLIENT_EXITED))
2494 		return;
2495 	if (~c->flags & CLIENT_EXIT)
2496 		return;
2497 
2498 	if (c->flags & CLIENT_CONTROL) {
2499 		control_discard(c);
2500 		if (!control_all_done(c))
2501 			return;
2502 	}
2503 	RB_FOREACH(cf, client_files, &c->files) {
2504 		if (EVBUFFER_LENGTH(cf->buffer) != 0)
2505 			return;
2506 	}
2507 	c->flags |= CLIENT_EXITED;
2508 
2509 	switch (c->exit_type) {
2510 	case CLIENT_EXIT_RETURN:
2511 		if (c->exit_message != NULL)
2512 			msize = strlen(c->exit_message) + 1;
2513 		else
2514 			msize = 0;
2515 		size = (sizeof c->retval) + msize;
2516 		data = xmalloc(size);
2517 		memcpy(data, &c->retval, sizeof c->retval);
2518 		if (c->exit_message != NULL)
2519 			memcpy(data + sizeof c->retval, c->exit_message, msize);
2520 		proc_send(c->peer, MSG_EXIT, -1, data, size);
2521 		free(data);
2522 		break;
2523 	case CLIENT_EXIT_SHUTDOWN:
2524 		proc_send(c->peer, MSG_SHUTDOWN, -1, NULL, 0);
2525 		break;
2526 	case CLIENT_EXIT_DETACH:
2527 		proc_send(c->peer, c->exit_msgtype, -1, name, strlen(name) + 1);
2528 		break;
2529 	}
2530 	free(c->exit_session);
2531 	free(c->exit_message);
2532 }
2533 
2534 /* Redraw timer callback. */
2535 static void
2536 server_client_redraw_timer(__unused int fd, __unused short events,
2537     __unused void *data)
2538 {
2539 	log_debug("redraw timer fired");
2540 }
2541 
2542 /*
2543  * Check if modes need to be updated. Only modes in the current window are
2544  * updated and it is done when the status line is redrawn.
2545  */
2546 static void
2547 server_client_check_modes(struct client *c)
2548 {
2549 	struct window			*w = c->session->curw->window;
2550 	struct window_pane		*wp;
2551 	struct window_mode_entry	*wme;
2552 
2553 	if (c->flags & (CLIENT_CONTROL|CLIENT_SUSPENDED))
2554 		return;
2555 	if (~c->flags & CLIENT_REDRAWSTATUS)
2556 		return;
2557 	TAILQ_FOREACH(wp, &w->panes, entry) {
2558 		wme = TAILQ_FIRST(&wp->modes);
2559 		if (wme != NULL && wme->mode->update != NULL)
2560 			wme->mode->update(wme);
2561 	}
2562 }
2563 
2564 /* Check for client redraws. */
2565 static void
2566 server_client_check_redraw(struct client *c)
2567 {
2568 	struct session		*s = c->session;
2569 	struct tty		*tty = &c->tty;
2570 	struct window		*w = c->session->curw->window;
2571 	struct window_pane	*wp;
2572 	int			 needed, tty_flags, mode = tty->mode;
2573 	uint64_t		 client_flags = 0;
2574 	int			 redraw;
2575 	u_int			 bit = 0;
2576 	struct timeval		 tv = { .tv_usec = 1000 };
2577 	static struct event	 ev;
2578 	size_t			 left;
2579 
2580 	if (c->flags & (CLIENT_CONTROL|CLIENT_SUSPENDED))
2581 		return;
2582 	if (c->flags & CLIENT_ALLREDRAWFLAGS) {
2583 		log_debug("%s: redraw%s%s%s%s%s", c->name,
2584 		    (c->flags & CLIENT_REDRAWWINDOW) ? " window" : "",
2585 		    (c->flags & CLIENT_REDRAWSTATUS) ? " status" : "",
2586 		    (c->flags & CLIENT_REDRAWBORDERS) ? " borders" : "",
2587 		    (c->flags & CLIENT_REDRAWOVERLAY) ? " overlay" : "",
2588 		    (c->flags & CLIENT_REDRAWPANES) ? " panes" : "");
2589 	}
2590 
2591 	/*
2592 	 * If there is outstanding data, defer the redraw until it has been
2593 	 * consumed. We can just add a timer to get out of the event loop and
2594 	 * end up back here.
2595 	 */
2596 	needed = 0;
2597 	if (c->flags & CLIENT_ALLREDRAWFLAGS)
2598 		needed = 1;
2599 	else {
2600 		TAILQ_FOREACH(wp, &w->panes, entry) {
2601 			if (wp->flags & PANE_REDRAW) {
2602 				needed = 1;
2603 				break;
2604 			}
2605 		}
2606 		if (needed)
2607 			client_flags |= CLIENT_REDRAWPANES;
2608 	}
2609 	if (needed && (left = EVBUFFER_LENGTH(tty->out)) != 0) {
2610 		log_debug("%s: redraw deferred (%zu left)", c->name, left);
2611 		if (!evtimer_initialized(&ev))
2612 			evtimer_set(&ev, server_client_redraw_timer, NULL);
2613 		if (!evtimer_pending(&ev, NULL)) {
2614 			log_debug("redraw timer started");
2615 			evtimer_add(&ev, &tv);
2616 		}
2617 
2618 		if (~c->flags & CLIENT_REDRAWWINDOW) {
2619 			TAILQ_FOREACH(wp, &w->panes, entry) {
2620 				if (wp->flags & PANE_REDRAW) {
2621 					log_debug("%s: pane %%%u needs redraw",
2622 					    c->name, wp->id);
2623 					c->redraw_panes |= (1 << bit);
2624 				}
2625 				if (++bit == 64) {
2626 					/*
2627 					 * If more that 64 panes, give up and
2628 					 * just redraw the window.
2629 					 */
2630 					client_flags &= CLIENT_REDRAWPANES;
2631 					client_flags |= CLIENT_REDRAWWINDOW;
2632 					break;
2633 				}
2634 			}
2635 			if (c->redraw_panes != 0)
2636 				c->flags |= CLIENT_REDRAWPANES;
2637 		}
2638 		c->flags |= client_flags;
2639 		return;
2640 	} else if (needed)
2641 		log_debug("%s: redraw needed", c->name);
2642 
2643 	tty_flags = tty->flags & (TTY_BLOCK|TTY_FREEZE|TTY_NOCURSOR);
2644 	tty->flags = (tty->flags & ~(TTY_BLOCK|TTY_FREEZE))|TTY_NOCURSOR;
2645 
2646 	if (~c->flags & CLIENT_REDRAWWINDOW) {
2647 		/*
2648 		 * If not redrawing the entire window, check whether each pane
2649 		 * needs to be redrawn.
2650 		 */
2651 		TAILQ_FOREACH(wp, &w->panes, entry) {
2652 			redraw = 0;
2653 			if (wp->flags & PANE_REDRAW)
2654 				redraw = 1;
2655 			else if (c->flags & CLIENT_REDRAWPANES)
2656 				redraw = !!(c->redraw_panes & (1 << bit));
2657 			bit++;
2658 			if (!redraw)
2659 				continue;
2660 			log_debug("%s: redrawing pane %%%u", __func__, wp->id);
2661 			screen_redraw_pane(c, wp);
2662 		}
2663 		c->redraw_panes = 0;
2664 		c->flags &= ~CLIENT_REDRAWPANES;
2665 	}
2666 
2667 	if (c->flags & CLIENT_ALLREDRAWFLAGS) {
2668 		if (options_get_number(s->options, "set-titles")) {
2669 			server_client_set_title(c);
2670 			server_client_set_path(c);
2671 		}
2672 		screen_redraw_screen(c);
2673 	}
2674 
2675 	tty->flags = (tty->flags & ~TTY_NOCURSOR)|(tty_flags & TTY_NOCURSOR);
2676 	tty_update_mode(tty, mode, NULL);
2677 	tty->flags = (tty->flags & ~(TTY_BLOCK|TTY_FREEZE|TTY_NOCURSOR))|
2678 	    tty_flags;
2679 
2680 	c->flags &= ~(CLIENT_ALLREDRAWFLAGS|CLIENT_STATUSFORCE);
2681 
2682 	if (needed) {
2683 		/*
2684 		 * We would have deferred the redraw unless the output buffer
2685 		 * was empty, so we can record how many bytes the redraw
2686 		 * generated.
2687 		 */
2688 		c->redraw = EVBUFFER_LENGTH(tty->out);
2689 		log_debug("%s: redraw added %zu bytes", c->name, c->redraw);
2690 	}
2691 }
2692 
2693 /* Set client title. */
2694 static void
2695 server_client_set_title(struct client *c)
2696 {
2697 	struct session		*s = c->session;
2698 	const char		*template;
2699 	char			*title;
2700 	struct format_tree	*ft;
2701 
2702 	template = options_get_string(s->options, "set-titles-string");
2703 
2704 	ft = format_create(c, NULL, FORMAT_NONE, 0);
2705 	format_defaults(ft, c, NULL, NULL, NULL);
2706 
2707 	title = format_expand_time(ft, template);
2708 	if (c->title == NULL || strcmp(title, c->title) != 0) {
2709 		free(c->title);
2710 		c->title = xstrdup(title);
2711 		tty_set_title(&c->tty, c->title);
2712 	}
2713 	free(title);
2714 
2715 	format_free(ft);
2716 }
2717 
2718 /* Set client path. */
2719 static void
2720 server_client_set_path(struct client *c)
2721 {
2722 	struct session	*s = c->session;
2723 	const char	*path;
2724 
2725 	if (s->curw == NULL)
2726 		return;
2727 	if (s->curw->window->active->base.path == NULL)
2728 		path = "";
2729 	else
2730 		path = s->curw->window->active->base.path;
2731 	if (c->path == NULL || strcmp(path, c->path) != 0) {
2732 		free(c->path);
2733 		c->path = xstrdup(path);
2734 		tty_set_path(&c->tty, c->path);
2735 	}
2736 }
2737 
2738 /* Dispatch message from client. */
2739 static void
2740 server_client_dispatch(struct imsg *imsg, void *arg)
2741 {
2742 	struct client	*c = arg;
2743 	ssize_t		 datalen;
2744 	struct session	*s;
2745 
2746 	if (c->flags & CLIENT_DEAD)
2747 		return;
2748 
2749 	if (imsg == NULL) {
2750 		server_client_lost(c);
2751 		return;
2752 	}
2753 
2754 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
2755 
2756 	switch (imsg->hdr.type) {
2757 	case MSG_IDENTIFY_CLIENTPID:
2758 	case MSG_IDENTIFY_CWD:
2759 	case MSG_IDENTIFY_ENVIRON:
2760 	case MSG_IDENTIFY_FEATURES:
2761 	case MSG_IDENTIFY_FLAGS:
2762 	case MSG_IDENTIFY_LONGFLAGS:
2763 	case MSG_IDENTIFY_STDIN:
2764 	case MSG_IDENTIFY_STDOUT:
2765 	case MSG_IDENTIFY_TERM:
2766 	case MSG_IDENTIFY_TERMINFO:
2767 	case MSG_IDENTIFY_TTYNAME:
2768 	case MSG_IDENTIFY_DONE:
2769 		server_client_dispatch_identify(c, imsg);
2770 		break;
2771 	case MSG_COMMAND:
2772 		server_client_dispatch_command(c, imsg);
2773 		break;
2774 	case MSG_RESIZE:
2775 		if (datalen != 0)
2776 			fatalx("bad MSG_RESIZE size");
2777 
2778 		if (c->flags & CLIENT_CONTROL)
2779 			break;
2780 		server_client_update_latest(c);
2781 		tty_resize(&c->tty);
2782 		tty_repeat_requests(&c->tty);
2783 		recalculate_sizes();
2784 		if (c->overlay_resize == NULL)
2785 			server_client_clear_overlay(c);
2786 		else
2787 			c->overlay_resize(c, c->overlay_data);
2788 		server_redraw_client(c);
2789 		if (c->session != NULL)
2790 			notify_client("client-resized", c);
2791 		break;
2792 	case MSG_EXITING:
2793 		if (datalen != 0)
2794 			fatalx("bad MSG_EXITING size");
2795 		server_client_set_session(c, NULL);
2796 		recalculate_sizes();
2797 		tty_close(&c->tty);
2798 		proc_send(c->peer, MSG_EXITED, -1, NULL, 0);
2799 		break;
2800 	case MSG_WAKEUP:
2801 	case MSG_UNLOCK:
2802 		if (datalen != 0)
2803 			fatalx("bad MSG_WAKEUP size");
2804 
2805 		if (!(c->flags & CLIENT_SUSPENDED))
2806 			break;
2807 		c->flags &= ~CLIENT_SUSPENDED;
2808 
2809 		if (c->fd == -1 || c->session == NULL) /* exited already */
2810 			break;
2811 		s = c->session;
2812 
2813 		if (gettimeofday(&c->activity_time, NULL) != 0)
2814 			fatal("gettimeofday failed");
2815 
2816 		tty_start_tty(&c->tty);
2817 		server_redraw_client(c);
2818 		recalculate_sizes();
2819 
2820 		if (s != NULL)
2821 			session_update_activity(s, &c->activity_time);
2822 		break;
2823 	case MSG_SHELL:
2824 		if (datalen != 0)
2825 			fatalx("bad MSG_SHELL size");
2826 
2827 		server_client_dispatch_shell(c);
2828 		break;
2829 	case MSG_WRITE_READY:
2830 		file_write_ready(&c->files, imsg);
2831 		break;
2832 	case MSG_READ:
2833 		file_read_data(&c->files, imsg);
2834 		break;
2835 	case MSG_READ_DONE:
2836 		file_read_done(&c->files, imsg);
2837 		break;
2838 	}
2839 }
2840 
2841 /* Callback when command is not allowed. */
2842 static enum cmd_retval
2843 server_client_read_only(struct cmdq_item *item, __unused void *data)
2844 {
2845 	cmdq_error(item, "client is read-only");
2846 	return (CMD_RETURN_ERROR);
2847 }
2848 
2849 /* Callback when command is done. */
2850 static enum cmd_retval
2851 server_client_command_done(struct cmdq_item *item, __unused void *data)
2852 {
2853 	struct client	*c = cmdq_get_client(item);
2854 
2855 	if (~c->flags & CLIENT_ATTACHED)
2856 		c->flags |= CLIENT_EXIT;
2857 	else if (~c->flags & CLIENT_EXIT) {
2858 		if (c->flags & CLIENT_CONTROL)
2859 			control_ready(c);
2860 		tty_send_requests(&c->tty);
2861 	}
2862 	return (CMD_RETURN_NORMAL);
2863 }
2864 
2865 /* Handle command message. */
2866 static void
2867 server_client_dispatch_command(struct client *c, struct imsg *imsg)
2868 {
2869 	struct msg_command	  data;
2870 	char			 *buf;
2871 	size_t			  len;
2872 	int			  argc;
2873 	char			**argv, *cause;
2874 	struct cmd_parse_result	 *pr;
2875 	struct args_value	 *values;
2876 	struct cmdq_item	 *new_item;
2877 
2878 	if (c->flags & CLIENT_EXIT)
2879 		return;
2880 
2881 	if (imsg->hdr.len - IMSG_HEADER_SIZE < sizeof data)
2882 		fatalx("bad MSG_COMMAND size");
2883 	memcpy(&data, imsg->data, sizeof data);
2884 
2885 	buf = (char *)imsg->data + sizeof data;
2886 	len = imsg->hdr.len  - IMSG_HEADER_SIZE - sizeof data;
2887 	if (len > 0 && buf[len - 1] != '\0')
2888 		fatalx("bad MSG_COMMAND string");
2889 
2890 	argc = data.argc;
2891 	if (cmd_unpack_argv(buf, len, argc, &argv) != 0) {
2892 		cause = xstrdup("command too long");
2893 		goto error;
2894 	}
2895 
2896 	if (argc == 0) {
2897 		argc = 1;
2898 		argv = xcalloc(1, sizeof *argv);
2899 		*argv = xstrdup("new-session");
2900 	}
2901 
2902 	values = args_from_vector(argc, argv);
2903 	pr = cmd_parse_from_arguments(values, argc, NULL);
2904 	switch (pr->status) {
2905 	case CMD_PARSE_ERROR:
2906 		cause = pr->error;
2907 		goto error;
2908 	case CMD_PARSE_SUCCESS:
2909 		break;
2910 	}
2911 	args_free_values(values, argc);
2912 	free(values);
2913 	cmd_free_argv(argc, argv);
2914 
2915 	if ((c->flags & CLIENT_READONLY) &&
2916 	    !cmd_list_all_have(pr->cmdlist, CMD_READONLY))
2917 		new_item = cmdq_get_callback(server_client_read_only, NULL);
2918 	else
2919 		new_item = cmdq_get_command(pr->cmdlist, NULL);
2920 	cmdq_append(c, new_item);
2921 	cmdq_append(c, cmdq_get_callback(server_client_command_done, NULL));
2922 
2923 	cmd_list_free(pr->cmdlist);
2924 	return;
2925 
2926 error:
2927 	cmd_free_argv(argc, argv);
2928 
2929 	cmdq_append(c, cmdq_get_error(cause));
2930 	free(cause);
2931 
2932 	c->flags |= CLIENT_EXIT;
2933 }
2934 
2935 /* Handle identify message. */
2936 static void
2937 server_client_dispatch_identify(struct client *c, struct imsg *imsg)
2938 {
2939 	const char	*data, *home;
2940 	size_t		 datalen;
2941 	int		 flags, feat;
2942 	uint64_t	 longflags;
2943 	char		*name;
2944 
2945 	if (c->flags & CLIENT_IDENTIFIED)
2946 		fatalx("out-of-order identify message");
2947 
2948 	data = imsg->data;
2949 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
2950 
2951 	switch (imsg->hdr.type)	{
2952 	case MSG_IDENTIFY_FEATURES:
2953 		if (datalen != sizeof feat)
2954 			fatalx("bad MSG_IDENTIFY_FEATURES size");
2955 		memcpy(&feat, data, sizeof feat);
2956 		c->term_features |= feat;
2957 		log_debug("client %p IDENTIFY_FEATURES %s", c,
2958 		    tty_get_features(feat));
2959 		break;
2960 	case MSG_IDENTIFY_FLAGS:
2961 		if (datalen != sizeof flags)
2962 			fatalx("bad MSG_IDENTIFY_FLAGS size");
2963 		memcpy(&flags, data, sizeof flags);
2964 		c->flags |= flags;
2965 		log_debug("client %p IDENTIFY_FLAGS %#x", c, flags);
2966 		break;
2967 	case MSG_IDENTIFY_LONGFLAGS:
2968 		if (datalen != sizeof longflags)
2969 			fatalx("bad MSG_IDENTIFY_LONGFLAGS size");
2970 		memcpy(&longflags, data, sizeof longflags);
2971 		c->flags |= longflags;
2972 		log_debug("client %p IDENTIFY_LONGFLAGS %#llx", c,
2973 		    (unsigned long long)longflags);
2974 		break;
2975 	case MSG_IDENTIFY_TERM:
2976 		if (datalen == 0 || data[datalen - 1] != '\0')
2977 			fatalx("bad MSG_IDENTIFY_TERM string");
2978 		if (*data == '\0')
2979 			c->term_name = xstrdup("unknown");
2980 		else
2981 			c->term_name = xstrdup(data);
2982 		log_debug("client %p IDENTIFY_TERM %s", c, data);
2983 		break;
2984 	case MSG_IDENTIFY_TERMINFO:
2985 		if (datalen == 0 || data[datalen - 1] != '\0')
2986 			fatalx("bad MSG_IDENTIFY_TERMINFO string");
2987 		c->term_caps = xreallocarray(c->term_caps, c->term_ncaps + 1,
2988 		    sizeof *c->term_caps);
2989 		c->term_caps[c->term_ncaps++] = xstrdup(data);
2990 		log_debug("client %p IDENTIFY_TERMINFO %s", c, data);
2991 		break;
2992 	case MSG_IDENTIFY_TTYNAME:
2993 		if (datalen == 0 || data[datalen - 1] != '\0')
2994 			fatalx("bad MSG_IDENTIFY_TTYNAME string");
2995 		c->ttyname = xstrdup(data);
2996 		log_debug("client %p IDENTIFY_TTYNAME %s", c, data);
2997 		break;
2998 	case MSG_IDENTIFY_CWD:
2999 		if (datalen == 0 || data[datalen - 1] != '\0')
3000 			fatalx("bad MSG_IDENTIFY_CWD string");
3001 		if (access(data, X_OK) == 0)
3002 			c->cwd = xstrdup(data);
3003 		else if ((home = find_home()) != NULL)
3004 			c->cwd = xstrdup(home);
3005 		else
3006 			c->cwd = xstrdup("/");
3007 		log_debug("client %p IDENTIFY_CWD %s", c, data);
3008 		break;
3009 	case MSG_IDENTIFY_STDIN:
3010 		if (datalen != 0)
3011 			fatalx("bad MSG_IDENTIFY_STDIN size");
3012 		c->fd = imsg_get_fd(imsg);
3013 		log_debug("client %p IDENTIFY_STDIN %d", c, c->fd);
3014 		break;
3015 	case MSG_IDENTIFY_STDOUT:
3016 		if (datalen != 0)
3017 			fatalx("bad MSG_IDENTIFY_STDOUT size");
3018 		c->out_fd = imsg_get_fd(imsg);
3019 		log_debug("client %p IDENTIFY_STDOUT %d", c, c->out_fd);
3020 		break;
3021 	case MSG_IDENTIFY_ENVIRON:
3022 		if (datalen == 0 || data[datalen - 1] != '\0')
3023 			fatalx("bad MSG_IDENTIFY_ENVIRON string");
3024 		if (strchr(data, '=') != NULL)
3025 			environ_put(c->environ, data, 0);
3026 		log_debug("client %p IDENTIFY_ENVIRON %s", c, data);
3027 		break;
3028 	case MSG_IDENTIFY_CLIENTPID:
3029 		if (datalen != sizeof c->pid)
3030 			fatalx("bad MSG_IDENTIFY_CLIENTPID size");
3031 		memcpy(&c->pid, data, sizeof c->pid);
3032 		log_debug("client %p IDENTIFY_CLIENTPID %ld", c, (long)c->pid);
3033 		break;
3034 	default:
3035 		break;
3036 	}
3037 
3038 	if (imsg->hdr.type != MSG_IDENTIFY_DONE)
3039 		return;
3040 	c->flags |= CLIENT_IDENTIFIED;
3041 
3042 	if (*c->ttyname != '\0')
3043 		name = xstrdup(c->ttyname);
3044 	else
3045 		xasprintf(&name, "client-%ld", (long)c->pid);
3046 	c->name = name;
3047 	log_debug("client %p name is %s", c, c->name);
3048 
3049 	if (c->flags & CLIENT_CONTROL)
3050 		control_start(c);
3051 	else if (c->fd != -1) {
3052 		if (tty_init(&c->tty, c) != 0) {
3053 			close(c->fd);
3054 			c->fd = -1;
3055 		} else {
3056 			tty_resize(&c->tty);
3057 			c->flags |= CLIENT_TERMINAL;
3058 		}
3059 		close(c->out_fd);
3060 		c->out_fd = -1;
3061 	}
3062 
3063 	/*
3064 	 * If this is the first client, load configuration files. Any later
3065 	 * clients are allowed to continue with their command even if the
3066 	 * config has not been loaded - they might have been run from inside it
3067 	 */
3068 	if ((~c->flags & CLIENT_EXIT) &&
3069 	     !cfg_finished &&
3070 	     c == TAILQ_FIRST(&clients))
3071 		start_cfg();
3072 }
3073 
3074 /* Handle shell message. */
3075 static void
3076 server_client_dispatch_shell(struct client *c)
3077 {
3078 	const char	*shell;
3079 
3080 	shell = options_get_string(global_s_options, "default-shell");
3081 	if (!checkshell(shell))
3082 		shell = _PATH_BSHELL;
3083 	proc_send(c->peer, MSG_SHELL, -1, shell, strlen(shell) + 1);
3084 
3085 	proc_kill_peer(c->peer);
3086 }
3087 
3088 /* Get client working directory. */
3089 const char *
3090 server_client_get_cwd(struct client *c, struct session *s)
3091 {
3092 	const char	*home;
3093 
3094 	if (!cfg_finished && cfg_client != NULL)
3095 		return (cfg_client->cwd);
3096 	if (c != NULL && c->session == NULL && c->cwd != NULL)
3097 		return (c->cwd);
3098 	if (s != NULL && s->cwd != NULL)
3099 		return (s->cwd);
3100 	if (c != NULL && (s = c->session) != NULL && s->cwd != NULL)
3101 		return (s->cwd);
3102 	if ((home = find_home()) != NULL)
3103 		return (home);
3104 	return ("/");
3105 }
3106 
3107 /* Get control client flags. */
3108 static uint64_t
3109 server_client_control_flags(struct client *c, const char *next)
3110 {
3111 	if (strcmp(next, "pause-after") == 0) {
3112 		c->pause_age = 0;
3113 		return (CLIENT_CONTROL_PAUSEAFTER);
3114 	}
3115 	if (sscanf(next, "pause-after=%u", &c->pause_age) == 1) {
3116 		c->pause_age *= 1000;
3117 		return (CLIENT_CONTROL_PAUSEAFTER);
3118 	}
3119 	if (strcmp(next, "no-output") == 0)
3120 		return (CLIENT_CONTROL_NOOUTPUT);
3121 	if (strcmp(next, "wait-exit") == 0)
3122 		return (CLIENT_CONTROL_WAITEXIT);
3123 	return (0);
3124 }
3125 
3126 /* Set client flags. */
3127 void
3128 server_client_set_flags(struct client *c, const char *flags)
3129 {
3130 	char	*s, *copy, *next;
3131 	uint64_t flag;
3132 	int	 not;
3133 
3134 	s = copy = xstrdup(flags);
3135 	while ((next = strsep(&s, ",")) != NULL) {
3136 		not = (*next == '!');
3137 		if (not)
3138 			next++;
3139 
3140 		if (c->flags & CLIENT_CONTROL)
3141 			flag = server_client_control_flags(c, next);
3142 		else
3143 			flag = 0;
3144 		if (strcmp(next, "read-only") == 0)
3145 			flag = CLIENT_READONLY;
3146 		else if (strcmp(next, "ignore-size") == 0)
3147 			flag = CLIENT_IGNORESIZE;
3148 		else if (strcmp(next, "active-pane") == 0)
3149 			flag = CLIENT_ACTIVEPANE;
3150 		if (flag == 0)
3151 			continue;
3152 
3153 		log_debug("client %s set flag %s", c->name, next);
3154 		if (not) {
3155 			if (c->flags & CLIENT_READONLY)
3156 				flag &= ~CLIENT_READONLY;
3157 			c->flags &= ~flag;
3158 		} else
3159 			c->flags |= flag;
3160 		if (flag == CLIENT_CONTROL_NOOUTPUT)
3161 			control_reset_offsets(c);
3162 	}
3163 	free(copy);
3164 	proc_send(c->peer, MSG_FLAGS, -1, &c->flags, sizeof c->flags);
3165 }
3166 
3167 /* Get client flags. This is only flags useful to show to users. */
3168 const char *
3169 server_client_get_flags(struct client *c)
3170 {
3171 	static char	s[256];
3172 	char	 	tmp[32];
3173 
3174 	*s = '\0';
3175 	if (c->flags & CLIENT_ATTACHED)
3176 		strlcat(s, "attached,", sizeof s);
3177 	if (c->flags & CLIENT_FOCUSED)
3178 		strlcat(s, "focused,", sizeof s);
3179 	if (c->flags & CLIENT_CONTROL)
3180 		strlcat(s, "control-mode,", sizeof s);
3181 	if (c->flags & CLIENT_IGNORESIZE)
3182 		strlcat(s, "ignore-size,", sizeof s);
3183 	if (c->flags & CLIENT_CONTROL_NOOUTPUT)
3184 		strlcat(s, "no-output,", sizeof s);
3185 	if (c->flags & CLIENT_CONTROL_WAITEXIT)
3186 		strlcat(s, "wait-exit,", sizeof s);
3187 	if (c->flags & CLIENT_CONTROL_PAUSEAFTER) {
3188 		xsnprintf(tmp, sizeof tmp, "pause-after=%u,",
3189 		    c->pause_age / 1000);
3190 		strlcat(s, tmp, sizeof s);
3191 	}
3192 	if (c->flags & CLIENT_READONLY)
3193 		strlcat(s, "read-only,", sizeof s);
3194 	if (c->flags & CLIENT_ACTIVEPANE)
3195 		strlcat(s, "active-pane,", sizeof s);
3196 	if (c->flags & CLIENT_SUSPENDED)
3197 		strlcat(s, "suspended,", sizeof s);
3198 	if (c->flags & CLIENT_UTF8)
3199 		strlcat(s, "UTF-8,", sizeof s);
3200 	if (*s != '\0')
3201 		s[strlen(s) - 1] = '\0';
3202 	return (s);
3203 }
3204 
3205 /* Get client window. */
3206 struct client_window *
3207 server_client_get_client_window(struct client *c, u_int id)
3208 {
3209 	struct client_window	cw = { .window = id };
3210 
3211 	return (RB_FIND(client_windows, &c->windows, &cw));
3212 }
3213 
3214 /* Add client window. */
3215 struct client_window *
3216 server_client_add_client_window(struct client *c, u_int id)
3217 {
3218 	struct client_window	*cw;
3219 
3220 	cw = server_client_get_client_window(c, id);
3221 	if (cw == NULL) {
3222 		cw = xcalloc(1, sizeof *cw);
3223 		cw->window = id;
3224 		RB_INSERT(client_windows, &c->windows, cw);
3225 	}
3226 	return (cw);
3227 }
3228 
3229 /* Get client active pane. */
3230 struct window_pane *
3231 server_client_get_pane(struct client *c)
3232 {
3233 	struct session		*s = c->session;
3234 	struct client_window	*cw;
3235 
3236 	if (s == NULL)
3237 		return (NULL);
3238 
3239 	if (~c->flags & CLIENT_ACTIVEPANE)
3240 		return (s->curw->window->active);
3241 	cw = server_client_get_client_window(c, s->curw->window->id);
3242 	if (cw == NULL)
3243 		return (s->curw->window->active);
3244 	return (cw->pane);
3245 }
3246 
3247 /* Set client active pane. */
3248 void
3249 server_client_set_pane(struct client *c, struct window_pane *wp)
3250 {
3251 	struct session		*s = c->session;
3252 	struct client_window	*cw;
3253 
3254 	if (s == NULL)
3255 		return;
3256 
3257 	cw = server_client_add_client_window(c, s->curw->window->id);
3258 	cw->pane = wp;
3259 	log_debug("%s pane now %%%u", c->name, wp->id);
3260 }
3261 
3262 /* Remove pane from client lists. */
3263 void
3264 server_client_remove_pane(struct window_pane *wp)
3265 {
3266 	struct client		*c;
3267 	struct window		*w = wp->window;
3268 	struct client_window	*cw;
3269 
3270 	TAILQ_FOREACH(c, &clients, entry) {
3271 		cw = server_client_get_client_window(c, w->id);
3272 		if (cw != NULL && cw->pane == wp) {
3273 			RB_REMOVE(client_windows, &c->windows, cw);
3274 			free(cw);
3275 		}
3276 	}
3277 }
3278 
3279 /* Print to a client. */
3280 void
3281 server_client_print(struct client *c, int parse, struct evbuffer *evb)
3282 {
3283 	void				*data = EVBUFFER_DATA(evb);
3284 	size_t				 size = EVBUFFER_LENGTH(evb);
3285 	struct window_pane		*wp;
3286 	struct window_mode_entry	*wme;
3287 	char				*sanitized, *msg, *line;
3288 
3289 	if (!parse) {
3290 		utf8_stravisx(&msg, data, size,
3291 		    VIS_OCTAL|VIS_CSTYLE|VIS_NOSLASH);
3292 		log_debug("%s: %s", __func__, msg);
3293 	} else {
3294 		msg = EVBUFFER_DATA(evb);
3295 		if (msg[size - 1] != '\0')
3296 			evbuffer_add(evb, "", 1);
3297 	}
3298 
3299 	if (c == NULL)
3300 		goto out;
3301 
3302 	if (c->session == NULL || (c->flags & CLIENT_CONTROL)) {
3303 		if (~c->flags & CLIENT_UTF8) {
3304 			sanitized = utf8_sanitize(msg);
3305 			if (c->flags & CLIENT_CONTROL)
3306 				control_write(c, "%s", sanitized);
3307 			else
3308 				file_print(c, "%s\n", sanitized);
3309 			free(sanitized);
3310 		} else {
3311 			if (c->flags & CLIENT_CONTROL)
3312 				control_write(c, "%s", msg);
3313 			else
3314 				file_print(c, "%s\n", msg);
3315 		}
3316 		goto out;
3317 	}
3318 
3319 	wp = server_client_get_pane(c);
3320 	wme = TAILQ_FIRST(&wp->modes);
3321 	if (wme == NULL || wme->mode != &window_view_mode)
3322 		window_pane_set_mode(wp, NULL, &window_view_mode, NULL, NULL);
3323 	if (parse) {
3324 		do {
3325 			line = evbuffer_readln(evb, NULL, EVBUFFER_EOL_LF);
3326 			if (line != NULL) {
3327 				window_copy_add(wp, 1, "%s", line);
3328 				free(line);
3329 			}
3330 		} while (line != NULL);
3331 
3332 		size = EVBUFFER_LENGTH(evb);
3333 		if (size != 0) {
3334 			line = EVBUFFER_DATA(evb);
3335 			window_copy_add(wp, 1, "%.*s", (int)size, line);
3336 		}
3337 	} else
3338 		window_copy_add(wp, 0, "%s", msg);
3339 
3340 out:
3341 	if (!parse)
3342 		free(msg);
3343 }
3344