xref: /netbsd-src/external/bsd/tmux/dist/server-client.c (revision ccd9df534e375a4366c5b55f23782053c7a98d82)
1 /* $OpenBSD$ */
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 <fcntl.h>
25 #include <stdlib.h>
26 #include <string.h>
27 #include <time.h>
28 #include <unistd.h>
29 
30 #include "tmux.h"
31 
32 static void	server_client_free(int, short, void *);
33 static void	server_client_check_pane_resize(struct window_pane *);
34 static void	server_client_check_pane_buffer(struct window_pane *);
35 static void	server_client_check_window_resize(struct window *);
36 static key_code	server_client_check_mouse(struct client *, struct key_event *);
37 static void	server_client_repeat_timer(int, short, void *);
38 static void	server_client_click_timer(int, short, void *);
39 static void	server_client_check_exit(struct client *);
40 static void	server_client_check_redraw(struct client *);
41 static void	server_client_check_modes(struct client *);
42 static void	server_client_set_title(struct client *);
43 static void	server_client_set_path(struct client *);
44 static void	server_client_reset_state(struct client *);
45 static int 	server_client_is_bracket_pasting(struct client *, key_code);
46 static int	server_client_assume_paste(struct session *);
47 static void	server_client_update_latest(struct client *);
48 
49 static void	server_client_dispatch(struct imsg *, void *);
50 static void	server_client_dispatch_command(struct client *, struct imsg *);
51 static void	server_client_dispatch_identify(struct client *, struct imsg *);
52 static void	server_client_dispatch_shell(struct client *);
53 
54 /* Compare client windows. */
55 static int
56 server_client_window_cmp(struct client_window *cw1,
57     struct client_window *cw2)
58 {
59 	if (cw1->window < cw2->window)
60 		return (-1);
61 	if (cw1->window > cw2->window)
62 		return (1);
63 	return (0);
64 }
65 RB_GENERATE(client_windows, client_window, entry, server_client_window_cmp);
66 
67 /* Number of attached clients. */
68 u_int
69 server_client_how_many(void)
70 {
71 	struct client  	*c;
72 	u_int		 n;
73 
74 	n = 0;
75 	TAILQ_FOREACH(c, &clients, entry) {
76 		if (c->session != NULL && (~c->flags & CLIENT_UNATTACHEDFLAGS))
77 			n++;
78 	}
79 	return (n);
80 }
81 
82 /* Overlay timer callback. */
83 static void
84 server_client_overlay_timer(__unused int fd, __unused short events, void *data)
85 {
86 	server_client_clear_overlay(data);
87 }
88 
89 /* Set an overlay on client. */
90 void
91 server_client_set_overlay(struct client *c, u_int delay,
92     overlay_check_cb checkcb, overlay_mode_cb modecb,
93     overlay_draw_cb drawcb, overlay_key_cb keycb, overlay_free_cb freecb,
94     overlay_resize_cb resizecb, void *data)
95 {
96 	struct timeval	tv;
97 
98 	if (c->overlay_draw != NULL)
99 		server_client_clear_overlay(c);
100 
101 	tv.tv_sec = delay / 1000;
102 	tv.tv_usec = (delay % 1000) * 1000L;
103 
104 	if (event_initialized(&c->overlay_timer))
105 		evtimer_del(&c->overlay_timer);
106 	evtimer_set(&c->overlay_timer, server_client_overlay_timer, c);
107 	if (delay != 0)
108 		evtimer_add(&c->overlay_timer, &tv);
109 
110 	c->overlay_check = checkcb;
111 	c->overlay_mode = modecb;
112 	c->overlay_draw = drawcb;
113 	c->overlay_key = keycb;
114 	c->overlay_free = freecb;
115 	c->overlay_resize = resizecb;
116 	c->overlay_data = data;
117 
118 	if (c->overlay_check == NULL)
119 		c->tty.flags |= TTY_FREEZE;
120 	if (c->overlay_mode == NULL)
121 		c->tty.flags |= TTY_NOCURSOR;
122 	server_redraw_client(c);
123 }
124 
125 /* Clear overlay mode on client. */
126 void
127 server_client_clear_overlay(struct client *c)
128 {
129 	if (c->overlay_draw == NULL)
130 		return;
131 
132 	if (event_initialized(&c->overlay_timer))
133 		evtimer_del(&c->overlay_timer);
134 
135 	if (c->overlay_free != NULL)
136 		c->overlay_free(c, c->overlay_data);
137 
138 	c->overlay_check = NULL;
139 	c->overlay_mode = NULL;
140 	c->overlay_draw = NULL;
141 	c->overlay_key = NULL;
142 	c->overlay_free = NULL;
143 	c->overlay_data = NULL;
144 
145 	c->tty.flags &= ~(TTY_FREEZE|TTY_NOCURSOR);
146 	server_redraw_client(c);
147 }
148 
149 /*
150  * Given overlay position and dimensions, return parts of the input range which
151  * are visible.
152  */
153 void
154 server_client_overlay_range(u_int x, u_int y, u_int sx, u_int sy, u_int px,
155     u_int py, u_int nx, struct overlay_ranges *r)
156 {
157 	u_int	ox, onx;
158 
159 	/* Return up to 2 ranges. */
160 	r->px[2] = 0;
161 	r->nx[2] = 0;
162 
163 	/* Trivial case of no overlap in the y direction. */
164 	if (py < y || py > y + sy - 1) {
165 		r->px[0] = px;
166 		r->nx[0] = nx;
167 		r->px[1] = 0;
168 		r->nx[1] = 0;
169 		return;
170 	}
171 
172 	/* Visible bit to the left of the popup. */
173 	if (px < x) {
174 		r->px[0] = px;
175 		r->nx[0] = x - px;
176 		if (r->nx[0] > nx)
177 			r->nx[0] = nx;
178 	} else {
179 		r->px[0] = 0;
180 		r->nx[0] = 0;
181 	}
182 
183 	/* Visible bit to the right of the popup. */
184 	ox = x + sx;
185 	if (px > ox)
186 		ox = px;
187 	onx = px + nx;
188 	if (onx > ox) {
189 		r->px[1] = ox;
190 		r->nx[1] = onx - ox;
191 	} else {
192 		r->px[1] = 0;
193 		r->nx[1] = 0;
194 	}
195 }
196 
197 /* Check if this client is inside this server. */
198 int
199 server_client_check_nested(struct client *c)
200 {
201 	struct environ_entry	*envent;
202 	struct window_pane	*wp;
203 
204 	envent = environ_find(c->environ, "TMUX");
205 	if (envent == NULL || *envent->value == '\0')
206 		return (0);
207 
208 	RB_FOREACH(wp, window_pane_tree, &all_window_panes) {
209 		if (strcmp(wp->tty, c->ttyname) == 0)
210 			return (1);
211 	}
212 	return (0);
213 }
214 
215 /* Set client key table. */
216 void
217 server_client_set_key_table(struct client *c, const char *name)
218 {
219 	if (name == NULL)
220 		name = server_client_get_key_table(c);
221 
222 	key_bindings_unref_table(c->keytable);
223 	c->keytable = key_bindings_get_table(name, 1);
224 	c->keytable->references++;
225 }
226 
227 /* Get default key table. */
228 const char *
229 server_client_get_key_table(struct client *c)
230 {
231 	struct session	*s = c->session;
232 	const char	*name;
233 
234 	if (s == NULL)
235 		return ("root");
236 
237 	name = options_get_string(s->options, "key-table");
238 	if (*name == '\0')
239 		return ("root");
240 	return (name);
241 }
242 
243 /* Is this table the default key table? */
244 static int
245 server_client_is_default_key_table(struct client *c, struct key_table *table)
246 {
247 	return (strcmp(table->name, server_client_get_key_table(c)) == 0);
248 }
249 
250 /* Create a new client. */
251 struct client *
252 server_client_create(int fd)
253 {
254 	struct client	*c;
255 
256 	setblocking(fd, 0);
257 
258 	c = xcalloc(1, sizeof *c);
259 	c->references = 1;
260 	c->peer = proc_add_peer(server_proc, fd, server_client_dispatch, c);
261 
262 	if (gettimeofday(&c->creation_time, NULL) != 0)
263 		fatal("gettimeofday failed");
264 	memcpy(&c->activity_time, &c->creation_time, sizeof c->activity_time);
265 
266 	c->environ = environ_create();
267 
268 	c->fd = -1;
269 	c->out_fd = -1;
270 
271 	c->queue = cmdq_new();
272 	RB_INIT(&c->windows);
273 	RB_INIT(&c->files);
274 
275 	c->tty.sx = 80;
276 	c->tty.sy = 24;
277 
278 	status_init(c);
279 	c->flags |= CLIENT_FOCUSED;
280 
281 	c->keytable = key_bindings_get_table("root", 1);
282 	c->keytable->references++;
283 
284 	evtimer_set(&c->repeat_timer, server_client_repeat_timer, c);
285 	evtimer_set(&c->click_timer, server_client_click_timer, c);
286 
287 	TAILQ_INSERT_TAIL(&clients, c, entry);
288 	log_debug("new client %p", c);
289 	return (c);
290 }
291 
292 /* Open client terminal if needed. */
293 int
294 server_client_open(struct client *c, char **cause)
295 {
296 	const char	*ttynam = _PATH_TTY;
297 
298 	if (c->flags & CLIENT_CONTROL)
299 		return (0);
300 
301 	if (strcmp(c->ttyname, ttynam) == 0||
302 	    ((isatty(STDIN_FILENO) &&
303 	    (ttynam = ttyname(STDIN_FILENO)) != NULL &&
304 	    strcmp(c->ttyname, ttynam) == 0) ||
305 	    (isatty(STDOUT_FILENO) &&
306 	    (ttynam = ttyname(STDOUT_FILENO)) != NULL &&
307 	    strcmp(c->ttyname, ttynam) == 0) ||
308 	    (isatty(STDERR_FILENO) &&
309 	    (ttynam = ttyname(STDERR_FILENO)) != NULL &&
310 	    strcmp(c->ttyname, ttynam) == 0))) {
311 		xasprintf(cause, "can't use %s", c->ttyname);
312 		return (-1);
313 	}
314 
315 	if (!(c->flags & CLIENT_TERMINAL)) {
316 		*cause = xstrdup("not a terminal");
317 		return (-1);
318 	}
319 
320 	if (tty_open(&c->tty, cause) != 0)
321 		return (-1);
322 
323 	return (0);
324 }
325 
326 /* Lost an attached client. */
327 static void
328 server_client_attached_lost(struct client *c)
329 {
330 	struct session	*s;
331 	struct window	*w;
332 	struct client	*loop;
333 	struct client	*found;
334 
335 	log_debug("lost attached client %p", c);
336 
337 	/*
338 	 * By this point the session in the client has been cleared so walk all
339 	 * windows to find any with this client as the latest.
340 	 */
341 	RB_FOREACH(w, windows, &windows) {
342 		if (w->latest != c)
343 			continue;
344 
345 		found = NULL;
346 		TAILQ_FOREACH(loop, &clients, entry) {
347 			s = loop->session;
348 			if (loop == c || s == NULL || s->curw->window != w)
349 				continue;
350 			if (found == NULL || timercmp(&loop->activity_time,
351 			    &found->activity_time, >))
352 				found = loop;
353 		}
354 		if (found != NULL)
355 			server_client_update_latest(found);
356 	}
357 }
358 
359 /* Set client session. */
360 void
361 server_client_set_session(struct client *c, struct session *s)
362 {
363 	struct session	*old = c->session;
364 
365 	if (s != NULL && c->session != NULL && c->session != s)
366 		c->last_session = c->session;
367 	else if (s == NULL)
368 		c->last_session = NULL;
369 	c->session = s;
370 	c->flags |= CLIENT_FOCUSED;
371 
372 	if (old != NULL && old->curw != NULL)
373 		window_update_focus(old->curw->window);
374 	if (s != NULL) {
375 		recalculate_sizes();
376 		window_update_focus(s->curw->window);
377 		session_update_activity(s, NULL);
378 		gettimeofday(&s->last_attached_time, NULL);
379 		s->curw->flags &= ~WINLINK_ALERTFLAGS;
380 		s->curw->window->latest = c;
381 		alerts_check_session(s);
382 		tty_update_client_offset(c);
383 		status_timer_start(c);
384 		notify_client("client-session-changed", c);
385 		server_redraw_client(c);
386 	}
387 
388 	server_check_unattached();
389 	server_update_socket();
390 }
391 
392 /* Lost a client. */
393 void
394 server_client_lost(struct client *c)
395 {
396 	struct client_file	*cf, *cf1;
397 	struct client_window	*cw, *cw1;
398 
399 	c->flags |= CLIENT_DEAD;
400 
401 	server_client_clear_overlay(c);
402 	status_prompt_clear(c);
403 	status_message_clear(c);
404 
405 	RB_FOREACH_SAFE(cf, client_files, &c->files, cf1) {
406 		cf->error = EINTR;
407 		file_fire_done(cf);
408 	}
409 	RB_FOREACH_SAFE(cw, client_windows, &c->windows, cw1) {
410 		RB_REMOVE(client_windows, &c->windows, cw);
411 		free(cw);
412 	}
413 
414 	TAILQ_REMOVE(&clients, c, entry);
415 	log_debug("lost client %p", c);
416 
417 	if (c->flags & CLIENT_ATTACHED) {
418 		server_client_attached_lost(c);
419 		notify_client("client-detached", c);
420 	}
421 
422 	if (c->flags & CLIENT_CONTROL)
423 		control_stop(c);
424 	if (c->flags & CLIENT_TERMINAL)
425 		tty_free(&c->tty);
426 	free(c->ttyname);
427 	free(c->clipboard_panes);
428 
429 	free(c->term_name);
430 	free(c->term_type);
431 	tty_term_free_list(c->term_caps, c->term_ncaps);
432 
433 	status_free(c);
434 
435 	free(c->title);
436 	free(__UNCONST(c->cwd));
437 
438 	evtimer_del(&c->repeat_timer);
439 	evtimer_del(&c->click_timer);
440 
441 	key_bindings_unref_table(c->keytable);
442 
443 	free(c->message_string);
444 	if (event_initialized(&c->message_timer))
445 		evtimer_del(&c->message_timer);
446 
447 	free(c->prompt_saved);
448 	free(c->prompt_string);
449 	free(c->prompt_buffer);
450 
451 	format_lost_client(c);
452 	environ_free(c->environ);
453 
454 	proc_remove_peer(c->peer);
455 	c->peer = NULL;
456 
457 	if (c->out_fd != -1)
458 		close(c->out_fd);
459 	if (c->fd != -1) {
460 		close(c->fd);
461 		c->fd = -1;
462 	}
463 	server_client_unref(c);
464 
465 	server_add_accept(0); /* may be more file descriptors now */
466 
467 	recalculate_sizes();
468 	server_check_unattached();
469 	server_update_socket();
470 }
471 
472 /* Remove reference from a client. */
473 void
474 server_client_unref(struct client *c)
475 {
476 	log_debug("unref client %p (%d references)", c, c->references);
477 
478 	c->references--;
479 	if (c->references == 0)
480 		event_once(-1, EV_TIMEOUT, server_client_free, c, NULL);
481 }
482 
483 /* Free dead client. */
484 static void
485 server_client_free(__unused int fd, __unused short events, void *arg)
486 {
487 	struct client	*c = arg;
488 
489 	log_debug("free client %p (%d references)", c, c->references);
490 
491 	cmdq_free(c->queue);
492 
493 	if (c->references == 0) {
494 		free(__UNCONST(c->name));
495 		free(c);
496 	}
497 }
498 
499 /* Suspend a client. */
500 void
501 server_client_suspend(struct client *c)
502 {
503 	struct session	*s = c->session;
504 
505 	if (s == NULL || (c->flags & CLIENT_UNATTACHEDFLAGS))
506 		return;
507 
508 	tty_stop_tty(&c->tty);
509 	c->flags |= CLIENT_SUSPENDED;
510 	proc_send(c->peer, MSG_SUSPEND, -1, NULL, 0);
511 }
512 
513 /* Detach a client. */
514 void
515 server_client_detach(struct client *c, enum msgtype msgtype)
516 {
517 	struct session	*s = c->session;
518 
519 	if (s == NULL || (c->flags & CLIENT_NODETACHFLAGS))
520 		return;
521 
522 	c->flags |= CLIENT_EXIT;
523 
524 	c->exit_type = CLIENT_EXIT_DETACH;
525 	c->exit_msgtype = msgtype;
526 	c->exit_session = xstrdup(s->name);
527 }
528 
529 /* Execute command to replace a client. */
530 void
531 server_client_exec(struct client *c, const char *cmd)
532 {
533 	struct session	*s = c->session;
534 	char		*msg;
535 	const char	*shell;
536 	size_t		 cmdsize, shellsize;
537 
538 	if (*cmd == '\0')
539 		return;
540 	cmdsize = strlen(cmd) + 1;
541 
542 	if (s != NULL)
543 		shell = options_get_string(s->options, "default-shell");
544 	else
545 		shell = options_get_string(global_s_options, "default-shell");
546 	if (!checkshell(shell))
547 		shell = _PATH_BSHELL;
548 	shellsize = strlen(shell) + 1;
549 
550 	msg = xmalloc(cmdsize + shellsize);
551 	memcpy(msg, cmd, cmdsize);
552 	memcpy(msg + cmdsize, shell, shellsize);
553 
554 	proc_send(c->peer, MSG_EXEC, -1, msg, cmdsize + shellsize);
555 	free(msg);
556 }
557 
558 /* Check for mouse keys. */
559 static key_code
560 server_client_check_mouse(struct client *c, struct key_event *event)
561 {
562 	struct mouse_event	*m = &event->m;
563 	struct session		*s = c->session, *fs;
564 	struct winlink		*fwl;
565 	struct window_pane	*wp, *fwp;
566 	u_int			 x, y, b, sx, sy, px, py;
567 	int			 ignore = 0;
568 	key_code		 key;
569 	struct timeval		 tv;
570 	struct style_range	*sr;
571 	enum { NOTYPE,
572 	       MOVE,
573 	       DOWN,
574 	       UP,
575 	       DRAG,
576 	       WHEEL,
577 	       SECOND,
578 	       DOUBLE,
579 	       TRIPLE } type = NOTYPE;
580 	enum { NOWHERE,
581 	       PANE,
582 	       STATUS,
583 	       STATUS_LEFT,
584 	       STATUS_RIGHT,
585 	       STATUS_DEFAULT,
586 	       BORDER } where = NOWHERE;
587 
588 	log_debug("%s mouse %02x at %u,%u (last %u,%u) (%d)", c->name, m->b,
589 	    m->x, m->y, m->lx, m->ly, c->tty.mouse_drag_flag);
590 
591 	/* What type of event is this? */
592 	if (event->key == KEYC_DOUBLECLICK) {
593 		type = DOUBLE;
594 		x = m->x, y = m->y, b = m->b;
595 		ignore = 1;
596 		log_debug("double-click at %u,%u", x, y);
597 	} else if ((m->sgr_type != ' ' &&
598 	    MOUSE_DRAG(m->sgr_b) &&
599 	    MOUSE_RELEASE(m->sgr_b)) ||
600 	    (m->sgr_type == ' ' &&
601 	    MOUSE_DRAG(m->b) &&
602 	    MOUSE_RELEASE(m->b) &&
603 	    MOUSE_RELEASE(m->lb))) {
604 		type = MOVE;
605 		x = m->x, y = m->y, b = 0;
606 		log_debug("move at %u,%u", x, y);
607 	} else if (MOUSE_DRAG(m->b)) {
608 		type = DRAG;
609 		if (c->tty.mouse_drag_flag) {
610 			x = m->x, y = m->y, b = m->b;
611 			if (x == m->lx && y == m->ly)
612 				return (KEYC_UNKNOWN);
613 			log_debug("drag update at %u,%u", x, y);
614 		} else {
615 			x = m->lx, y = m->ly, b = m->lb;
616 			log_debug("drag start at %u,%u", x, y);
617 		}
618 	} else if (MOUSE_WHEEL(m->b)) {
619 		type = WHEEL;
620 		x = m->x, y = m->y, b = m->b;
621 		log_debug("wheel at %u,%u", x, y);
622 	} else if (MOUSE_RELEASE(m->b)) {
623 		type = UP;
624 		x = m->x, y = m->y, b = m->lb;
625 		log_debug("up at %u,%u", x, y);
626 	} else {
627 		if (c->flags & CLIENT_DOUBLECLICK) {
628 			evtimer_del(&c->click_timer);
629 			c->flags &= ~CLIENT_DOUBLECLICK;
630 			if (m->b == c->click_button) {
631 				type = SECOND;
632 				x = m->x, y = m->y, b = m->b;
633 				log_debug("second-click at %u,%u", x, y);
634 				c->flags |= CLIENT_TRIPLECLICK;
635 			}
636 		} else if (c->flags & CLIENT_TRIPLECLICK) {
637 			evtimer_del(&c->click_timer);
638 			c->flags &= ~CLIENT_TRIPLECLICK;
639 			if (m->b == c->click_button) {
640 				type = TRIPLE;
641 				x = m->x, y = m->y, b = m->b;
642 				log_debug("triple-click at %u,%u", x, y);
643 				goto have_event;
644 			}
645 		} else {
646 			type = DOWN;
647 			x = m->x, y = m->y, b = m->b;
648 			log_debug("down at %u,%u", x, y);
649 			c->flags |= CLIENT_DOUBLECLICK;
650 		}
651 
652 		if (KEYC_CLICK_TIMEOUT != 0) {
653 			memcpy(&c->click_event, m, sizeof c->click_event);
654 			c->click_button = m->b;
655 
656 			log_debug("click timer started");
657 			tv.tv_sec = KEYC_CLICK_TIMEOUT / 1000;
658 			tv.tv_usec = (KEYC_CLICK_TIMEOUT % 1000) * 1000L;
659 			evtimer_del(&c->click_timer);
660 			evtimer_add(&c->click_timer, &tv);
661 		}
662 	}
663 
664 have_event:
665 	if (type == NOTYPE)
666 		return (KEYC_UNKNOWN);
667 
668 	/* Save the session. */
669 	m->s = s->id;
670 	m->w = -1;
671 	m->wp = -1;
672 	m->ignore = ignore;
673 
674 	/* Is this on the status line? */
675 	m->statusat = status_at_line(c);
676 	m->statuslines = status_line_size(c);
677 	if (m->statusat != -1 &&
678 	    y >= (u_int)m->statusat &&
679 	    y < m->statusat + m->statuslines) {
680 		sr = status_get_range(c, x, y - m->statusat);
681 		if (sr == NULL) {
682 			where = STATUS_DEFAULT;
683 		} else {
684 			switch (sr->type) {
685 			case STYLE_RANGE_NONE:
686 				return (KEYC_UNKNOWN);
687 			case STYLE_RANGE_LEFT:
688 				log_debug("mouse range: left");
689 				where = STATUS_LEFT;
690 				break;
691 			case STYLE_RANGE_RIGHT:
692 				log_debug("mouse range: right");
693 				where = STATUS_RIGHT;
694 				break;
695 			case STYLE_RANGE_PANE:
696 				fwp = window_pane_find_by_id(sr->argument);
697 				if (fwp == NULL)
698 					return (KEYC_UNKNOWN);
699 				m->wp = sr->argument;
700 
701 				log_debug("mouse range: pane %%%u", m->wp);
702 				where = STATUS;
703 				break;
704 			case STYLE_RANGE_WINDOW:
705 				fwl = winlink_find_by_index(&s->windows,
706 				    sr->argument);
707 				if (fwl == NULL)
708 					return (KEYC_UNKNOWN);
709 				m->w = fwl->window->id;
710 
711 				log_debug("mouse range: window @%u", m->w);
712 				where = STATUS;
713 				break;
714 			case STYLE_RANGE_SESSION:
715 				fs = session_find_by_id(sr->argument);
716 				if (fs == NULL)
717 					return (KEYC_UNKNOWN);
718 				m->s = sr->argument;
719 
720 				log_debug("mouse range: session $%u", m->s);
721 				where = STATUS;
722 				break;
723 			case STYLE_RANGE_USER:
724 				where = STATUS;
725 				break;
726 			}
727 		}
728 	}
729 
730 	/* Not on status line. Adjust position and check for border or pane. */
731 	if (where == NOWHERE) {
732 		px = x;
733 		if (m->statusat == 0 && y >= m->statuslines)
734 			py = y - m->statuslines;
735 		else if (m->statusat > 0 && y >= (u_int)m->statusat)
736 			py = m->statusat - 1;
737 		else
738 			py = y;
739 
740 		tty_window_offset(&c->tty, &m->ox, &m->oy, &sx, &sy);
741 		log_debug("mouse window @%u at %u,%u (%ux%u)",
742 		    s->curw->window->id, m->ox, m->oy, sx, sy);
743 		if (px > sx || py > sy)
744 			return (KEYC_UNKNOWN);
745 		px = px + m->ox;
746 		py = py + m->oy;
747 
748 		/* Try the pane borders if not zoomed. */
749 		if (~s->curw->window->flags & WINDOW_ZOOMED) {
750 			TAILQ_FOREACH(wp, &s->curw->window->panes, entry) {
751 				if ((wp->xoff + wp->sx == px &&
752 				    wp->yoff <= 1 + py &&
753 				    wp->yoff + wp->sy >= py) ||
754 				    (wp->yoff + wp->sy == py &&
755 				    wp->xoff <= 1 + px &&
756 				    wp->xoff + wp->sx >= px))
757 					break;
758 			}
759 			if (wp != NULL)
760 				where = BORDER;
761 		}
762 
763 		/* Otherwise try inside the pane. */
764 		if (where == NOWHERE) {
765 			wp = window_get_active_at(s->curw->window, px, py);
766 			if (wp != NULL)
767 				where = PANE;
768 			else
769 				return (KEYC_UNKNOWN);
770 		}
771 		if (where == PANE)
772 			log_debug("mouse %u,%u on pane %%%u", x, y, wp->id);
773 		else if (where == BORDER)
774 			log_debug("mouse on pane %%%u border", wp->id);
775 		m->wp = wp->id;
776 		m->w = wp->window->id;
777 	} else
778 		m->wp = -1;
779 
780 	/* Stop dragging if needed. */
781 	if (type != DRAG && type != WHEEL && c->tty.mouse_drag_flag != 0) {
782 		if (c->tty.mouse_drag_release != NULL)
783 			c->tty.mouse_drag_release(c, m);
784 
785 		c->tty.mouse_drag_update = NULL;
786 		c->tty.mouse_drag_release = NULL;
787 
788 		/*
789 		 * End a mouse drag by passing a MouseDragEnd key corresponding
790 		 * to the button that started the drag.
791 		 */
792 		switch (c->tty.mouse_drag_flag - 1) {
793 		case MOUSE_BUTTON_1:
794 			if (where == PANE)
795 				key = KEYC_MOUSEDRAGEND1_PANE;
796 			if (where == STATUS)
797 				key = KEYC_MOUSEDRAGEND1_STATUS;
798 			if (where == STATUS_LEFT)
799 				key = KEYC_MOUSEDRAGEND1_STATUS_LEFT;
800 			if (where == STATUS_RIGHT)
801 				key = KEYC_MOUSEDRAGEND1_STATUS_RIGHT;
802 			if (where == STATUS_DEFAULT)
803 				key = KEYC_MOUSEDRAGEND1_STATUS_DEFAULT;
804 			if (where == BORDER)
805 				key = KEYC_MOUSEDRAGEND1_BORDER;
806 			break;
807 		case MOUSE_BUTTON_2:
808 			if (where == PANE)
809 				key = KEYC_MOUSEDRAGEND2_PANE;
810 			if (where == STATUS)
811 				key = KEYC_MOUSEDRAGEND2_STATUS;
812 			if (where == STATUS_LEFT)
813 				key = KEYC_MOUSEDRAGEND2_STATUS_LEFT;
814 			if (where == STATUS_RIGHT)
815 				key = KEYC_MOUSEDRAGEND2_STATUS_RIGHT;
816 			if (where == STATUS_DEFAULT)
817 				key = KEYC_MOUSEDRAGEND2_STATUS_DEFAULT;
818 			if (where == BORDER)
819 				key = KEYC_MOUSEDRAGEND2_BORDER;
820 			break;
821 		case MOUSE_BUTTON_3:
822 			if (where == PANE)
823 				key = KEYC_MOUSEDRAGEND3_PANE;
824 			if (where == STATUS)
825 				key = KEYC_MOUSEDRAGEND3_STATUS;
826 			if (where == STATUS_LEFT)
827 				key = KEYC_MOUSEDRAGEND3_STATUS_LEFT;
828 			if (where == STATUS_RIGHT)
829 				key = KEYC_MOUSEDRAGEND3_STATUS_RIGHT;
830 			if (where == STATUS_DEFAULT)
831 				key = KEYC_MOUSEDRAGEND3_STATUS_DEFAULT;
832 			if (where == BORDER)
833 				key = KEYC_MOUSEDRAGEND3_BORDER;
834 			break;
835 		case MOUSE_BUTTON_6:
836 			if (where == PANE)
837 				key = KEYC_MOUSEDRAGEND6_PANE;
838 			if (where == STATUS)
839 				key = KEYC_MOUSEDRAGEND6_STATUS;
840 			if (where == STATUS_LEFT)
841 				key = KEYC_MOUSEDRAGEND6_STATUS_LEFT;
842 			if (where == STATUS_RIGHT)
843 				key = KEYC_MOUSEDRAGEND6_STATUS_RIGHT;
844 			if (where == STATUS_DEFAULT)
845 				key = KEYC_MOUSEDRAGEND6_STATUS_DEFAULT;
846 			if (where == BORDER)
847 				key = KEYC_MOUSEDRAGEND6_BORDER;
848 			break;
849 		case MOUSE_BUTTON_7:
850 			if (where == PANE)
851 				key = KEYC_MOUSEDRAGEND7_PANE;
852 			if (where == STATUS)
853 				key = KEYC_MOUSEDRAGEND7_STATUS;
854 			if (where == STATUS_LEFT)
855 				key = KEYC_MOUSEDRAGEND7_STATUS_LEFT;
856 			if (where == STATUS_RIGHT)
857 				key = KEYC_MOUSEDRAGEND7_STATUS_RIGHT;
858 			if (where == STATUS_DEFAULT)
859 				key = KEYC_MOUSEDRAGEND7_STATUS_DEFAULT;
860 			if (where == BORDER)
861 				key = KEYC_MOUSEDRAGEND7_BORDER;
862 			break;
863 		case MOUSE_BUTTON_8:
864 			if (where == PANE)
865 				key = KEYC_MOUSEDRAGEND8_PANE;
866 			if (where == STATUS)
867 				key = KEYC_MOUSEDRAGEND8_STATUS;
868 			if (where == STATUS_LEFT)
869 				key = KEYC_MOUSEDRAGEND8_STATUS_LEFT;
870 			if (where == STATUS_RIGHT)
871 				key = KEYC_MOUSEDRAGEND8_STATUS_RIGHT;
872 			if (where == STATUS_DEFAULT)
873 				key = KEYC_MOUSEDRAGEND8_STATUS_DEFAULT;
874 			if (where == BORDER)
875 				key = KEYC_MOUSEDRAGEND8_BORDER;
876 			break;
877 		case MOUSE_BUTTON_9:
878 			if (where == PANE)
879 				key = KEYC_MOUSEDRAGEND9_PANE;
880 			if (where == STATUS)
881 				key = KEYC_MOUSEDRAGEND9_STATUS;
882 			if (where == STATUS_LEFT)
883 				key = KEYC_MOUSEDRAGEND9_STATUS_LEFT;
884 			if (where == STATUS_RIGHT)
885 				key = KEYC_MOUSEDRAGEND9_STATUS_RIGHT;
886 			if (where == STATUS_DEFAULT)
887 				key = KEYC_MOUSEDRAGEND9_STATUS_DEFAULT;
888 			if (where == BORDER)
889 				key = KEYC_MOUSEDRAGEND9_BORDER;
890 			break;
891 		case MOUSE_BUTTON_10:
892 			if (where == PANE)
893 				key = KEYC_MOUSEDRAGEND10_PANE;
894 			if (where == STATUS)
895 				key = KEYC_MOUSEDRAGEND10_STATUS;
896 			if (where == STATUS_LEFT)
897 				key = KEYC_MOUSEDRAGEND10_STATUS_LEFT;
898 			if (where == STATUS_RIGHT)
899 				key = KEYC_MOUSEDRAGEND10_STATUS_RIGHT;
900 			if (where == STATUS_DEFAULT)
901 				key = KEYC_MOUSEDRAGEND10_STATUS_DEFAULT;
902 			if (where == BORDER)
903 				key = KEYC_MOUSEDRAGEND10_BORDER;
904 			break;
905 		case MOUSE_BUTTON_11:
906 			if (where == PANE)
907 				key = KEYC_MOUSEDRAGEND11_PANE;
908 			if (where == STATUS)
909 				key = KEYC_MOUSEDRAGEND11_STATUS;
910 			if (where == STATUS_LEFT)
911 				key = KEYC_MOUSEDRAGEND11_STATUS_LEFT;
912 			if (where == STATUS_RIGHT)
913 				key = KEYC_MOUSEDRAGEND11_STATUS_RIGHT;
914 			if (where == STATUS_DEFAULT)
915 				key = KEYC_MOUSEDRAGEND11_STATUS_DEFAULT;
916 			if (where == BORDER)
917 				key = KEYC_MOUSEDRAGEND11_BORDER;
918 			break;
919 		default:
920 			key = KEYC_MOUSE;
921 			break;
922 		}
923 		c->tty.mouse_drag_flag = 0;
924 		goto out;
925 	}
926 
927 	/* Convert to a key binding. */
928 	key = KEYC_UNKNOWN;
929 	switch (type) {
930 	case NOTYPE:
931 		break;
932 	case MOVE:
933 		if (where == PANE)
934 			key = KEYC_MOUSEMOVE_PANE;
935 		if (where == STATUS)
936 			key = KEYC_MOUSEMOVE_STATUS;
937 		if (where == STATUS_LEFT)
938 			key = KEYC_MOUSEMOVE_STATUS_LEFT;
939 		if (where == STATUS_RIGHT)
940 			key = KEYC_MOUSEMOVE_STATUS_RIGHT;
941 		if (where == STATUS_DEFAULT)
942 			key = KEYC_MOUSEMOVE_STATUS_DEFAULT;
943 		if (where == BORDER)
944 			key = KEYC_MOUSEMOVE_BORDER;
945 		break;
946 	case DRAG:
947 		if (c->tty.mouse_drag_update != NULL)
948 			key = KEYC_DRAGGING;
949 		else {
950 			switch (MOUSE_BUTTONS(b)) {
951 			case MOUSE_BUTTON_1:
952 				if (where == PANE)
953 					key = KEYC_MOUSEDRAG1_PANE;
954 				if (where == STATUS)
955 					key = KEYC_MOUSEDRAG1_STATUS;
956 				if (where == STATUS_LEFT)
957 					key = KEYC_MOUSEDRAG1_STATUS_LEFT;
958 				if (where == STATUS_RIGHT)
959 					key = KEYC_MOUSEDRAG1_STATUS_RIGHT;
960 				if (where == STATUS_DEFAULT)
961 					key = KEYC_MOUSEDRAG1_STATUS_DEFAULT;
962 				if (where == BORDER)
963 					key = KEYC_MOUSEDRAG1_BORDER;
964 				break;
965 			case MOUSE_BUTTON_2:
966 				if (where == PANE)
967 					key = KEYC_MOUSEDRAG2_PANE;
968 				if (where == STATUS)
969 					key = KEYC_MOUSEDRAG2_STATUS;
970 				if (where == STATUS_LEFT)
971 					key = KEYC_MOUSEDRAG2_STATUS_LEFT;
972 				if (where == STATUS_RIGHT)
973 					key = KEYC_MOUSEDRAG2_STATUS_RIGHT;
974 				if (where == STATUS_DEFAULT)
975 					key = KEYC_MOUSEDRAG2_STATUS_DEFAULT;
976 				if (where == BORDER)
977 					key = KEYC_MOUSEDRAG2_BORDER;
978 				break;
979 			case MOUSE_BUTTON_3:
980 				if (where == PANE)
981 					key = KEYC_MOUSEDRAG3_PANE;
982 				if (where == STATUS)
983 					key = KEYC_MOUSEDRAG3_STATUS;
984 				if (where == STATUS_LEFT)
985 					key = KEYC_MOUSEDRAG3_STATUS_LEFT;
986 				if (where == STATUS_RIGHT)
987 					key = KEYC_MOUSEDRAG3_STATUS_RIGHT;
988 				if (where == STATUS_DEFAULT)
989 					key = KEYC_MOUSEDRAG3_STATUS_DEFAULT;
990 				if (where == BORDER)
991 					key = KEYC_MOUSEDRAG3_BORDER;
992 				break;
993 			case MOUSE_BUTTON_6:
994 				if (where == PANE)
995 					key = KEYC_MOUSEDRAG6_PANE;
996 				if (where == STATUS)
997 					key = KEYC_MOUSEDRAG6_STATUS;
998 				if (where == STATUS_LEFT)
999 					key = KEYC_MOUSEDRAG6_STATUS_LEFT;
1000 				if (where == STATUS_RIGHT)
1001 					key = KEYC_MOUSEDRAG6_STATUS_RIGHT;
1002 				if (where == STATUS_DEFAULT)
1003 					key = KEYC_MOUSEDRAG6_STATUS_DEFAULT;
1004 				if (where == BORDER)
1005 					key = KEYC_MOUSEDRAG6_BORDER;
1006 				break;
1007 			case MOUSE_BUTTON_7:
1008 				if (where == PANE)
1009 					key = KEYC_MOUSEDRAG7_PANE;
1010 				if (where == STATUS)
1011 					key = KEYC_MOUSEDRAG7_STATUS;
1012 				if (where == STATUS_LEFT)
1013 					key = KEYC_MOUSEDRAG7_STATUS_LEFT;
1014 				if (where == STATUS_RIGHT)
1015 					key = KEYC_MOUSEDRAG7_STATUS_RIGHT;
1016 				if (where == STATUS_DEFAULT)
1017 					key = KEYC_MOUSEDRAG7_STATUS_DEFAULT;
1018 				if (where == BORDER)
1019 					key = KEYC_MOUSEDRAG7_BORDER;
1020 				break;
1021 			case MOUSE_BUTTON_8:
1022 				if (where == PANE)
1023 					key = KEYC_MOUSEDRAG8_PANE;
1024 				if (where == STATUS)
1025 					key = KEYC_MOUSEDRAG8_STATUS;
1026 				if (where == STATUS_LEFT)
1027 					key = KEYC_MOUSEDRAG8_STATUS_LEFT;
1028 				if (where == STATUS_RIGHT)
1029 					key = KEYC_MOUSEDRAG8_STATUS_RIGHT;
1030 				if (where == STATUS_DEFAULT)
1031 					key = KEYC_MOUSEDRAG8_STATUS_DEFAULT;
1032 				if (where == BORDER)
1033 					key = KEYC_MOUSEDRAG8_BORDER;
1034 				break;
1035 			case MOUSE_BUTTON_9:
1036 				if (where == PANE)
1037 					key = KEYC_MOUSEDRAG9_PANE;
1038 				if (where == STATUS)
1039 					key = KEYC_MOUSEDRAG9_STATUS;
1040 				if (where == STATUS_LEFT)
1041 					key = KEYC_MOUSEDRAG9_STATUS_LEFT;
1042 				if (where == STATUS_RIGHT)
1043 					key = KEYC_MOUSEDRAG9_STATUS_RIGHT;
1044 				if (where == STATUS_DEFAULT)
1045 					key = KEYC_MOUSEDRAG9_STATUS_DEFAULT;
1046 				if (where == BORDER)
1047 					key = KEYC_MOUSEDRAG9_BORDER;
1048 				break;
1049 			case MOUSE_BUTTON_10:
1050 				if (where == PANE)
1051 					key = KEYC_MOUSEDRAG10_PANE;
1052 				if (where == STATUS)
1053 					key = KEYC_MOUSEDRAG10_STATUS;
1054 				if (where == STATUS_LEFT)
1055 					key = KEYC_MOUSEDRAG10_STATUS_LEFT;
1056 				if (where == STATUS_RIGHT)
1057 					key = KEYC_MOUSEDRAG10_STATUS_RIGHT;
1058 				if (where == STATUS_DEFAULT)
1059 					key = KEYC_MOUSEDRAG10_STATUS_DEFAULT;
1060 				if (where == BORDER)
1061 					key = KEYC_MOUSEDRAG10_BORDER;
1062 				break;
1063 			case MOUSE_BUTTON_11:
1064 				if (where == PANE)
1065 					key = KEYC_MOUSEDRAG11_PANE;
1066 				if (where == STATUS)
1067 					key = KEYC_MOUSEDRAG11_STATUS;
1068 				if (where == STATUS_LEFT)
1069 					key = KEYC_MOUSEDRAG11_STATUS_LEFT;
1070 				if (where == STATUS_RIGHT)
1071 					key = KEYC_MOUSEDRAG11_STATUS_RIGHT;
1072 				if (where == STATUS_DEFAULT)
1073 					key = KEYC_MOUSEDRAG11_STATUS_DEFAULT;
1074 				if (where == BORDER)
1075 					key = KEYC_MOUSEDRAG11_BORDER;
1076 				break;
1077 			}
1078 		}
1079 
1080 		/*
1081 		 * Begin a drag by setting the flag to a non-zero value that
1082 		 * corresponds to the mouse button in use.
1083 		 */
1084 		c->tty.mouse_drag_flag = MOUSE_BUTTONS(b) + 1;
1085 		break;
1086 	case WHEEL:
1087 		if (MOUSE_BUTTONS(b) == MOUSE_WHEEL_UP) {
1088 			if (where == PANE)
1089 				key = KEYC_WHEELUP_PANE;
1090 			if (where == STATUS)
1091 				key = KEYC_WHEELUP_STATUS;
1092 			if (where == STATUS_LEFT)
1093 				key = KEYC_WHEELUP_STATUS_LEFT;
1094 			if (where == STATUS_RIGHT)
1095 				key = KEYC_WHEELUP_STATUS_RIGHT;
1096 			if (where == STATUS_DEFAULT)
1097 				key = KEYC_WHEELUP_STATUS_DEFAULT;
1098 			if (where == BORDER)
1099 				key = KEYC_WHEELUP_BORDER;
1100 		} else {
1101 			if (where == PANE)
1102 				key = KEYC_WHEELDOWN_PANE;
1103 			if (where == STATUS)
1104 				key = KEYC_WHEELDOWN_STATUS;
1105 			if (where == STATUS_LEFT)
1106 				key = KEYC_WHEELDOWN_STATUS_LEFT;
1107 			if (where == STATUS_RIGHT)
1108 				key = KEYC_WHEELDOWN_STATUS_RIGHT;
1109 			if (where == STATUS_DEFAULT)
1110 				key = KEYC_WHEELDOWN_STATUS_DEFAULT;
1111 			if (where == BORDER)
1112 				key = KEYC_WHEELDOWN_BORDER;
1113 		}
1114 		break;
1115 	case UP:
1116 		switch (MOUSE_BUTTONS(b)) {
1117 		case MOUSE_BUTTON_1:
1118 			if (where == PANE)
1119 				key = KEYC_MOUSEUP1_PANE;
1120 			if (where == STATUS)
1121 				key = KEYC_MOUSEUP1_STATUS;
1122 			if (where == STATUS_LEFT)
1123 				key = KEYC_MOUSEUP1_STATUS_LEFT;
1124 			if (where == STATUS_RIGHT)
1125 				key = KEYC_MOUSEUP1_STATUS_RIGHT;
1126 			if (where == STATUS_DEFAULT)
1127 				key = KEYC_MOUSEUP1_STATUS_DEFAULT;
1128 			if (where == BORDER)
1129 				key = KEYC_MOUSEUP1_BORDER;
1130 			break;
1131 		case MOUSE_BUTTON_2:
1132 			if (where == PANE)
1133 				key = KEYC_MOUSEUP2_PANE;
1134 			if (where == STATUS)
1135 				key = KEYC_MOUSEUP2_STATUS;
1136 			if (where == STATUS_LEFT)
1137 				key = KEYC_MOUSEUP2_STATUS_LEFT;
1138 			if (where == STATUS_RIGHT)
1139 				key = KEYC_MOUSEUP2_STATUS_RIGHT;
1140 			if (where == STATUS_DEFAULT)
1141 				key = KEYC_MOUSEUP2_STATUS_DEFAULT;
1142 			if (where == BORDER)
1143 				key = KEYC_MOUSEUP2_BORDER;
1144 			break;
1145 		case MOUSE_BUTTON_3:
1146 			if (where == PANE)
1147 				key = KEYC_MOUSEUP3_PANE;
1148 			if (where == STATUS)
1149 				key = KEYC_MOUSEUP3_STATUS;
1150 			if (where == STATUS_LEFT)
1151 				key = KEYC_MOUSEUP3_STATUS_LEFT;
1152 			if (where == STATUS_RIGHT)
1153 				key = KEYC_MOUSEUP3_STATUS_RIGHT;
1154 			if (where == STATUS_DEFAULT)
1155 				key = KEYC_MOUSEUP3_STATUS_DEFAULT;
1156 			if (where == BORDER)
1157 				key = KEYC_MOUSEUP3_BORDER;
1158 			break;
1159 		case MOUSE_BUTTON_6:
1160 			if (where == PANE)
1161 				key = KEYC_MOUSEUP6_PANE;
1162 			if (where == STATUS)
1163 				key = KEYC_MOUSEUP6_STATUS;
1164 			if (where == STATUS_LEFT)
1165 				key = KEYC_MOUSEUP6_STATUS_LEFT;
1166 			if (where == STATUS_RIGHT)
1167 				key = KEYC_MOUSEUP6_STATUS_RIGHT;
1168 			if (where == STATUS_DEFAULT)
1169 				key = KEYC_MOUSEUP6_STATUS_DEFAULT;
1170 			if (where == BORDER)
1171 				key = KEYC_MOUSEUP6_BORDER;
1172 			break;
1173 		case MOUSE_BUTTON_7:
1174 			if (where == PANE)
1175 				key = KEYC_MOUSEUP7_PANE;
1176 			if (where == STATUS)
1177 				key = KEYC_MOUSEUP7_STATUS;
1178 			if (where == STATUS_LEFT)
1179 				key = KEYC_MOUSEUP7_STATUS_LEFT;
1180 			if (where == STATUS_RIGHT)
1181 				key = KEYC_MOUSEUP7_STATUS_RIGHT;
1182 			if (where == STATUS_DEFAULT)
1183 				key = KEYC_MOUSEUP7_STATUS_DEFAULT;
1184 			if (where == BORDER)
1185 				key = KEYC_MOUSEUP7_BORDER;
1186 			break;
1187 		case MOUSE_BUTTON_8:
1188 			if (where == PANE)
1189 				key = KEYC_MOUSEUP8_PANE;
1190 			if (where == STATUS)
1191 				key = KEYC_MOUSEUP8_STATUS;
1192 			if (where == STATUS_LEFT)
1193 				key = KEYC_MOUSEUP8_STATUS_LEFT;
1194 			if (where == STATUS_RIGHT)
1195 				key = KEYC_MOUSEUP8_STATUS_RIGHT;
1196 			if (where == STATUS_DEFAULT)
1197 				key = KEYC_MOUSEUP8_STATUS_DEFAULT;
1198 			if (where == BORDER)
1199 				key = KEYC_MOUSEUP8_BORDER;
1200 			break;
1201 		case MOUSE_BUTTON_9:
1202 			if (where == PANE)
1203 				key = KEYC_MOUSEUP9_PANE;
1204 			if (where == STATUS)
1205 				key = KEYC_MOUSEUP9_STATUS;
1206 			if (where == STATUS_LEFT)
1207 				key = KEYC_MOUSEUP9_STATUS_LEFT;
1208 			if (where == STATUS_RIGHT)
1209 				key = KEYC_MOUSEUP9_STATUS_RIGHT;
1210 			if (where == STATUS_DEFAULT)
1211 				key = KEYC_MOUSEUP9_STATUS_DEFAULT;
1212 			if (where == BORDER)
1213 				key = KEYC_MOUSEUP9_BORDER;
1214 			break;
1215 		case MOUSE_BUTTON_10:
1216 			if (where == PANE)
1217 				key = KEYC_MOUSEUP1_PANE;
1218 			if (where == STATUS)
1219 				key = KEYC_MOUSEUP1_STATUS;
1220 			if (where == STATUS_LEFT)
1221 				key = KEYC_MOUSEUP1_STATUS_LEFT;
1222 			if (where == STATUS_RIGHT)
1223 				key = KEYC_MOUSEUP1_STATUS_RIGHT;
1224 			if (where == STATUS_DEFAULT)
1225 				key = KEYC_MOUSEUP1_STATUS_DEFAULT;
1226 			if (where == BORDER)
1227 				key = KEYC_MOUSEUP1_BORDER;
1228 			break;
1229 		case MOUSE_BUTTON_11:
1230 			if (where == PANE)
1231 				key = KEYC_MOUSEUP11_PANE;
1232 			if (where == STATUS)
1233 				key = KEYC_MOUSEUP11_STATUS;
1234 			if (where == STATUS_LEFT)
1235 				key = KEYC_MOUSEUP11_STATUS_LEFT;
1236 			if (where == STATUS_RIGHT)
1237 				key = KEYC_MOUSEUP11_STATUS_RIGHT;
1238 			if (where == STATUS_DEFAULT)
1239 				key = KEYC_MOUSEUP11_STATUS_DEFAULT;
1240 			if (where == BORDER)
1241 				key = KEYC_MOUSEUP11_BORDER;
1242 			break;
1243 		}
1244 		break;
1245 	case DOWN:
1246 		switch (MOUSE_BUTTONS(b)) {
1247 		case MOUSE_BUTTON_1:
1248 			if (where == PANE)
1249 				key = KEYC_MOUSEDOWN1_PANE;
1250 			if (where == STATUS)
1251 				key = KEYC_MOUSEDOWN1_STATUS;
1252 			if (where == STATUS_LEFT)
1253 				key = KEYC_MOUSEDOWN1_STATUS_LEFT;
1254 			if (where == STATUS_RIGHT)
1255 				key = KEYC_MOUSEDOWN1_STATUS_RIGHT;
1256 			if (where == STATUS_DEFAULT)
1257 				key = KEYC_MOUSEDOWN1_STATUS_DEFAULT;
1258 			if (where == BORDER)
1259 				key = KEYC_MOUSEDOWN1_BORDER;
1260 			break;
1261 		case MOUSE_BUTTON_2:
1262 			if (where == PANE)
1263 				key = KEYC_MOUSEDOWN2_PANE;
1264 			if (where == STATUS)
1265 				key = KEYC_MOUSEDOWN2_STATUS;
1266 			if (where == STATUS_LEFT)
1267 				key = KEYC_MOUSEDOWN2_STATUS_LEFT;
1268 			if (where == STATUS_RIGHT)
1269 				key = KEYC_MOUSEDOWN2_STATUS_RIGHT;
1270 			if (where == STATUS_DEFAULT)
1271 				key = KEYC_MOUSEDOWN2_STATUS_DEFAULT;
1272 			if (where == BORDER)
1273 				key = KEYC_MOUSEDOWN2_BORDER;
1274 			break;
1275 		case MOUSE_BUTTON_3:
1276 			if (where == PANE)
1277 				key = KEYC_MOUSEDOWN3_PANE;
1278 			if (where == STATUS)
1279 				key = KEYC_MOUSEDOWN3_STATUS;
1280 			if (where == STATUS_LEFT)
1281 				key = KEYC_MOUSEDOWN3_STATUS_LEFT;
1282 			if (where == STATUS_RIGHT)
1283 				key = KEYC_MOUSEDOWN3_STATUS_RIGHT;
1284 			if (where == STATUS_DEFAULT)
1285 				key = KEYC_MOUSEDOWN3_STATUS_DEFAULT;
1286 			if (where == BORDER)
1287 				key = KEYC_MOUSEDOWN3_BORDER;
1288 			break;
1289 		case MOUSE_BUTTON_6:
1290 			if (where == PANE)
1291 				key = KEYC_MOUSEDOWN6_PANE;
1292 			if (where == STATUS)
1293 				key = KEYC_MOUSEDOWN6_STATUS;
1294 			if (where == STATUS_LEFT)
1295 				key = KEYC_MOUSEDOWN6_STATUS_LEFT;
1296 			if (where == STATUS_RIGHT)
1297 				key = KEYC_MOUSEDOWN6_STATUS_RIGHT;
1298 			if (where == STATUS_DEFAULT)
1299 				key = KEYC_MOUSEDOWN6_STATUS_DEFAULT;
1300 			if (where == BORDER)
1301 				key = KEYC_MOUSEDOWN6_BORDER;
1302 			break;
1303 		case MOUSE_BUTTON_7:
1304 			if (where == PANE)
1305 				key = KEYC_MOUSEDOWN7_PANE;
1306 			if (where == STATUS)
1307 				key = KEYC_MOUSEDOWN7_STATUS;
1308 			if (where == STATUS_LEFT)
1309 				key = KEYC_MOUSEDOWN7_STATUS_LEFT;
1310 			if (where == STATUS_RIGHT)
1311 				key = KEYC_MOUSEDOWN7_STATUS_RIGHT;
1312 			if (where == STATUS_DEFAULT)
1313 				key = KEYC_MOUSEDOWN7_STATUS_DEFAULT;
1314 			if (where == BORDER)
1315 				key = KEYC_MOUSEDOWN7_BORDER;
1316 			break;
1317 		case MOUSE_BUTTON_8:
1318 			if (where == PANE)
1319 				key = KEYC_MOUSEDOWN8_PANE;
1320 			if (where == STATUS)
1321 				key = KEYC_MOUSEDOWN8_STATUS;
1322 			if (where == STATUS_LEFT)
1323 				key = KEYC_MOUSEDOWN8_STATUS_LEFT;
1324 			if (where == STATUS_RIGHT)
1325 				key = KEYC_MOUSEDOWN8_STATUS_RIGHT;
1326 			if (where == STATUS_DEFAULT)
1327 				key = KEYC_MOUSEDOWN8_STATUS_DEFAULT;
1328 			if (where == BORDER)
1329 				key = KEYC_MOUSEDOWN8_BORDER;
1330 			break;
1331 		case MOUSE_BUTTON_9:
1332 			if (where == PANE)
1333 				key = KEYC_MOUSEDOWN9_PANE;
1334 			if (where == STATUS)
1335 				key = KEYC_MOUSEDOWN9_STATUS;
1336 			if (where == STATUS_LEFT)
1337 				key = KEYC_MOUSEDOWN9_STATUS_LEFT;
1338 			if (where == STATUS_RIGHT)
1339 				key = KEYC_MOUSEDOWN9_STATUS_RIGHT;
1340 			if (where == STATUS_DEFAULT)
1341 				key = KEYC_MOUSEDOWN9_STATUS_DEFAULT;
1342 			if (where == BORDER)
1343 				key = KEYC_MOUSEDOWN9_BORDER;
1344 			break;
1345 		case MOUSE_BUTTON_10:
1346 			if (where == PANE)
1347 				key = KEYC_MOUSEDOWN10_PANE;
1348 			if (where == STATUS)
1349 				key = KEYC_MOUSEDOWN10_STATUS;
1350 			if (where == STATUS_LEFT)
1351 				key = KEYC_MOUSEDOWN10_STATUS_LEFT;
1352 			if (where == STATUS_RIGHT)
1353 				key = KEYC_MOUSEDOWN10_STATUS_RIGHT;
1354 			if (where == STATUS_DEFAULT)
1355 				key = KEYC_MOUSEDOWN10_STATUS_DEFAULT;
1356 			if (where == BORDER)
1357 				key = KEYC_MOUSEDOWN10_BORDER;
1358 			break;
1359 		case MOUSE_BUTTON_11:
1360 			if (where == PANE)
1361 				key = KEYC_MOUSEDOWN11_PANE;
1362 			if (where == STATUS)
1363 				key = KEYC_MOUSEDOWN11_STATUS;
1364 			if (where == STATUS_LEFT)
1365 				key = KEYC_MOUSEDOWN11_STATUS_LEFT;
1366 			if (where == STATUS_RIGHT)
1367 				key = KEYC_MOUSEDOWN11_STATUS_RIGHT;
1368 			if (where == STATUS_DEFAULT)
1369 				key = KEYC_MOUSEDOWN11_STATUS_DEFAULT;
1370 			if (where == BORDER)
1371 				key = KEYC_MOUSEDOWN11_BORDER;
1372 			break;
1373 		}
1374 		break;
1375 	case SECOND:
1376 		switch (MOUSE_BUTTONS(b)) {
1377 		case MOUSE_BUTTON_1:
1378 			if (where == PANE)
1379 				key = KEYC_SECONDCLICK1_PANE;
1380 			if (where == STATUS)
1381 				key = KEYC_SECONDCLICK1_STATUS;
1382 			if (where == STATUS_LEFT)
1383 				key = KEYC_SECONDCLICK1_STATUS_LEFT;
1384 			if (where == STATUS_RIGHT)
1385 				key = KEYC_SECONDCLICK1_STATUS_RIGHT;
1386 			if (where == STATUS_DEFAULT)
1387 				key = KEYC_SECONDCLICK1_STATUS_DEFAULT;
1388 			if (where == BORDER)
1389 				key = KEYC_SECONDCLICK1_BORDER;
1390 			break;
1391 		case MOUSE_BUTTON_2:
1392 			if (where == PANE)
1393 				key = KEYC_SECONDCLICK2_PANE;
1394 			if (where == STATUS)
1395 				key = KEYC_SECONDCLICK2_STATUS;
1396 			if (where == STATUS_LEFT)
1397 				key = KEYC_SECONDCLICK2_STATUS_LEFT;
1398 			if (where == STATUS_RIGHT)
1399 				key = KEYC_SECONDCLICK2_STATUS_RIGHT;
1400 			if (where == STATUS_DEFAULT)
1401 				key = KEYC_SECONDCLICK2_STATUS_DEFAULT;
1402 			if (where == BORDER)
1403 				key = KEYC_SECONDCLICK2_BORDER;
1404 			break;
1405 		case MOUSE_BUTTON_3:
1406 			if (where == PANE)
1407 				key = KEYC_SECONDCLICK3_PANE;
1408 			if (where == STATUS)
1409 				key = KEYC_SECONDCLICK3_STATUS;
1410 			if (where == STATUS_LEFT)
1411 				key = KEYC_SECONDCLICK3_STATUS_LEFT;
1412 			if (where == STATUS_RIGHT)
1413 				key = KEYC_SECONDCLICK3_STATUS_RIGHT;
1414 			if (where == STATUS_DEFAULT)
1415 				key = KEYC_SECONDCLICK3_STATUS_DEFAULT;
1416 			if (where == BORDER)
1417 				key = KEYC_SECONDCLICK3_BORDER;
1418 			break;
1419 		case MOUSE_BUTTON_6:
1420 			if (where == PANE)
1421 				key = KEYC_SECONDCLICK6_PANE;
1422 			if (where == STATUS)
1423 				key = KEYC_SECONDCLICK6_STATUS;
1424 			if (where == STATUS_LEFT)
1425 				key = KEYC_SECONDCLICK6_STATUS_LEFT;
1426 			if (where == STATUS_RIGHT)
1427 				key = KEYC_SECONDCLICK6_STATUS_RIGHT;
1428 			if (where == STATUS_DEFAULT)
1429 				key = KEYC_SECONDCLICK6_STATUS_DEFAULT;
1430 			if (where == BORDER)
1431 				key = KEYC_SECONDCLICK6_BORDER;
1432 			break;
1433 		case MOUSE_BUTTON_7:
1434 			if (where == PANE)
1435 				key = KEYC_SECONDCLICK7_PANE;
1436 			if (where == STATUS)
1437 				key = KEYC_SECONDCLICK7_STATUS;
1438 			if (where == STATUS_LEFT)
1439 				key = KEYC_SECONDCLICK7_STATUS_LEFT;
1440 			if (where == STATUS_RIGHT)
1441 				key = KEYC_SECONDCLICK7_STATUS_RIGHT;
1442 			if (where == STATUS_DEFAULT)
1443 				key = KEYC_SECONDCLICK7_STATUS_DEFAULT;
1444 			if (where == BORDER)
1445 				key = KEYC_SECONDCLICK7_BORDER;
1446 			break;
1447 		case MOUSE_BUTTON_8:
1448 			if (where == PANE)
1449 				key = KEYC_SECONDCLICK8_PANE;
1450 			if (where == STATUS)
1451 				key = KEYC_SECONDCLICK8_STATUS;
1452 			if (where == STATUS_LEFT)
1453 				key = KEYC_SECONDCLICK8_STATUS_LEFT;
1454 			if (where == STATUS_RIGHT)
1455 				key = KEYC_SECONDCLICK8_STATUS_RIGHT;
1456 			if (where == STATUS_DEFAULT)
1457 				key = KEYC_SECONDCLICK8_STATUS_DEFAULT;
1458 			if (where == BORDER)
1459 				key = KEYC_SECONDCLICK8_BORDER;
1460 			break;
1461 		case MOUSE_BUTTON_9:
1462 			if (where == PANE)
1463 				key = KEYC_SECONDCLICK9_PANE;
1464 			if (where == STATUS)
1465 				key = KEYC_SECONDCLICK9_STATUS;
1466 			if (where == STATUS_LEFT)
1467 				key = KEYC_SECONDCLICK9_STATUS_LEFT;
1468 			if (where == STATUS_RIGHT)
1469 				key = KEYC_SECONDCLICK9_STATUS_RIGHT;
1470 			if (where == STATUS_DEFAULT)
1471 				key = KEYC_SECONDCLICK9_STATUS_DEFAULT;
1472 			if (where == BORDER)
1473 				key = KEYC_SECONDCLICK9_BORDER;
1474 			break;
1475 		case MOUSE_BUTTON_10:
1476 			if (where == PANE)
1477 				key = KEYC_SECONDCLICK10_PANE;
1478 			if (where == STATUS)
1479 				key = KEYC_SECONDCLICK10_STATUS;
1480 			if (where == STATUS_LEFT)
1481 				key = KEYC_SECONDCLICK10_STATUS_LEFT;
1482 			if (where == STATUS_RIGHT)
1483 				key = KEYC_SECONDCLICK10_STATUS_RIGHT;
1484 			if (where == STATUS_DEFAULT)
1485 				key = KEYC_SECONDCLICK10_STATUS_DEFAULT;
1486 			if (where == BORDER)
1487 				key = KEYC_SECONDCLICK10_BORDER;
1488 			break;
1489 		case MOUSE_BUTTON_11:
1490 			if (where == PANE)
1491 				key = KEYC_SECONDCLICK11_PANE;
1492 			if (where == STATUS)
1493 				key = KEYC_SECONDCLICK11_STATUS;
1494 			if (where == STATUS_LEFT)
1495 				key = KEYC_SECONDCLICK11_STATUS_LEFT;
1496 			if (where == STATUS_RIGHT)
1497 				key = KEYC_SECONDCLICK11_STATUS_RIGHT;
1498 			if (where == STATUS_DEFAULT)
1499 				key = KEYC_SECONDCLICK11_STATUS_DEFAULT;
1500 			if (where == BORDER)
1501 				key = KEYC_SECONDCLICK11_BORDER;
1502 			break;
1503 		}
1504 		break;
1505 	case DOUBLE:
1506 		switch (MOUSE_BUTTONS(b)) {
1507 		case MOUSE_BUTTON_1:
1508 			if (where == PANE)
1509 				key = KEYC_DOUBLECLICK1_PANE;
1510 			if (where == STATUS)
1511 				key = KEYC_DOUBLECLICK1_STATUS;
1512 			if (where == STATUS_LEFT)
1513 				key = KEYC_DOUBLECLICK1_STATUS_LEFT;
1514 			if (where == STATUS_RIGHT)
1515 				key = KEYC_DOUBLECLICK1_STATUS_RIGHT;
1516 			if (where == STATUS_DEFAULT)
1517 				key = KEYC_DOUBLECLICK1_STATUS_DEFAULT;
1518 			if (where == BORDER)
1519 				key = KEYC_DOUBLECLICK1_BORDER;
1520 			break;
1521 		case MOUSE_BUTTON_2:
1522 			if (where == PANE)
1523 				key = KEYC_DOUBLECLICK2_PANE;
1524 			if (where == STATUS)
1525 				key = KEYC_DOUBLECLICK2_STATUS;
1526 			if (where == STATUS_LEFT)
1527 				key = KEYC_DOUBLECLICK2_STATUS_LEFT;
1528 			if (where == STATUS_RIGHT)
1529 				key = KEYC_DOUBLECLICK2_STATUS_RIGHT;
1530 			if (where == STATUS_DEFAULT)
1531 				key = KEYC_DOUBLECLICK2_STATUS_DEFAULT;
1532 			if (where == BORDER)
1533 				key = KEYC_DOUBLECLICK2_BORDER;
1534 			break;
1535 		case MOUSE_BUTTON_3:
1536 			if (where == PANE)
1537 				key = KEYC_DOUBLECLICK3_PANE;
1538 			if (where == STATUS)
1539 				key = KEYC_DOUBLECLICK3_STATUS;
1540 			if (where == STATUS_LEFT)
1541 				key = KEYC_DOUBLECLICK3_STATUS_LEFT;
1542 			if (where == STATUS_RIGHT)
1543 				key = KEYC_DOUBLECLICK3_STATUS_RIGHT;
1544 			if (where == STATUS_DEFAULT)
1545 				key = KEYC_DOUBLECLICK3_STATUS_DEFAULT;
1546 			if (where == BORDER)
1547 				key = KEYC_DOUBLECLICK3_BORDER;
1548 			break;
1549 		case MOUSE_BUTTON_6:
1550 			if (where == PANE)
1551 				key = KEYC_DOUBLECLICK6_PANE;
1552 			if (where == STATUS)
1553 				key = KEYC_DOUBLECLICK6_STATUS;
1554 			if (where == STATUS_LEFT)
1555 				key = KEYC_DOUBLECLICK6_STATUS_LEFT;
1556 			if (where == STATUS_RIGHT)
1557 				key = KEYC_DOUBLECLICK6_STATUS_RIGHT;
1558 			if (where == STATUS_DEFAULT)
1559 				key = KEYC_DOUBLECLICK6_STATUS_DEFAULT;
1560 			if (where == BORDER)
1561 				key = KEYC_DOUBLECLICK6_BORDER;
1562 			break;
1563 		case MOUSE_BUTTON_7:
1564 			if (where == PANE)
1565 				key = KEYC_DOUBLECLICK7_PANE;
1566 			if (where == STATUS)
1567 				key = KEYC_DOUBLECLICK7_STATUS;
1568 			if (where == STATUS_LEFT)
1569 				key = KEYC_DOUBLECLICK7_STATUS_LEFT;
1570 			if (where == STATUS_RIGHT)
1571 				key = KEYC_DOUBLECLICK7_STATUS_RIGHT;
1572 			if (where == STATUS_DEFAULT)
1573 				key = KEYC_DOUBLECLICK7_STATUS_DEFAULT;
1574 			if (where == BORDER)
1575 				key = KEYC_DOUBLECLICK7_BORDER;
1576 			break;
1577 		case MOUSE_BUTTON_8:
1578 			if (where == PANE)
1579 				key = KEYC_DOUBLECLICK8_PANE;
1580 			if (where == STATUS)
1581 				key = KEYC_DOUBLECLICK8_STATUS;
1582 			if (where == STATUS_LEFT)
1583 				key = KEYC_DOUBLECLICK8_STATUS_LEFT;
1584 			if (where == STATUS_RIGHT)
1585 				key = KEYC_DOUBLECLICK8_STATUS_RIGHT;
1586 			if (where == STATUS_DEFAULT)
1587 				key = KEYC_DOUBLECLICK8_STATUS_DEFAULT;
1588 			if (where == BORDER)
1589 				key = KEYC_DOUBLECLICK8_BORDER;
1590 			break;
1591 		case MOUSE_BUTTON_9:
1592 			if (where == PANE)
1593 				key = KEYC_DOUBLECLICK9_PANE;
1594 			if (where == STATUS)
1595 				key = KEYC_DOUBLECLICK9_STATUS;
1596 			if (where == STATUS_LEFT)
1597 				key = KEYC_DOUBLECLICK9_STATUS_LEFT;
1598 			if (where == STATUS_RIGHT)
1599 				key = KEYC_DOUBLECLICK9_STATUS_RIGHT;
1600 			if (where == STATUS_DEFAULT)
1601 				key = KEYC_DOUBLECLICK9_STATUS_DEFAULT;
1602 			if (where == BORDER)
1603 				key = KEYC_DOUBLECLICK9_BORDER;
1604 			break;
1605 		case MOUSE_BUTTON_10:
1606 			if (where == PANE)
1607 				key = KEYC_DOUBLECLICK10_PANE;
1608 			if (where == STATUS)
1609 				key = KEYC_DOUBLECLICK10_STATUS;
1610 			if (where == STATUS_LEFT)
1611 				key = KEYC_DOUBLECLICK10_STATUS_LEFT;
1612 			if (where == STATUS_RIGHT)
1613 				key = KEYC_DOUBLECLICK10_STATUS_RIGHT;
1614 			if (where == STATUS_DEFAULT)
1615 				key = KEYC_DOUBLECLICK10_STATUS_DEFAULT;
1616 			if (where == BORDER)
1617 				key = KEYC_DOUBLECLICK10_BORDER;
1618 			break;
1619 		case MOUSE_BUTTON_11:
1620 			if (where == PANE)
1621 				key = KEYC_DOUBLECLICK11_PANE;
1622 			if (where == STATUS)
1623 				key = KEYC_DOUBLECLICK11_STATUS;
1624 			if (where == STATUS_LEFT)
1625 				key = KEYC_DOUBLECLICK11_STATUS_LEFT;
1626 			if (where == STATUS_RIGHT)
1627 				key = KEYC_DOUBLECLICK11_STATUS_RIGHT;
1628 			if (where == STATUS_DEFAULT)
1629 				key = KEYC_DOUBLECLICK11_STATUS_DEFAULT;
1630 			if (where == BORDER)
1631 				key = KEYC_DOUBLECLICK11_BORDER;
1632 			break;
1633 		}
1634 		break;
1635 	case TRIPLE:
1636 		switch (MOUSE_BUTTONS(b)) {
1637 		case MOUSE_BUTTON_1:
1638 			if (where == PANE)
1639 				key = KEYC_TRIPLECLICK1_PANE;
1640 			if (where == STATUS)
1641 				key = KEYC_TRIPLECLICK1_STATUS;
1642 			if (where == STATUS_LEFT)
1643 				key = KEYC_TRIPLECLICK1_STATUS_LEFT;
1644 			if (where == STATUS_RIGHT)
1645 				key = KEYC_TRIPLECLICK1_STATUS_RIGHT;
1646 			if (where == STATUS_DEFAULT)
1647 				key = KEYC_TRIPLECLICK1_STATUS_DEFAULT;
1648 			if (where == BORDER)
1649 				key = KEYC_TRIPLECLICK1_BORDER;
1650 			break;
1651 		case MOUSE_BUTTON_2:
1652 			if (where == PANE)
1653 				key = KEYC_TRIPLECLICK2_PANE;
1654 			if (where == STATUS)
1655 				key = KEYC_TRIPLECLICK2_STATUS;
1656 			if (where == STATUS_LEFT)
1657 				key = KEYC_TRIPLECLICK2_STATUS_LEFT;
1658 			if (where == STATUS_RIGHT)
1659 				key = KEYC_TRIPLECLICK2_STATUS_RIGHT;
1660 			if (where == STATUS_DEFAULT)
1661 				key = KEYC_TRIPLECLICK2_STATUS_DEFAULT;
1662 			if (where == BORDER)
1663 				key = KEYC_TRIPLECLICK2_BORDER;
1664 			break;
1665 		case MOUSE_BUTTON_3:
1666 			if (where == PANE)
1667 				key = KEYC_TRIPLECLICK3_PANE;
1668 			if (where == STATUS)
1669 				key = KEYC_TRIPLECLICK3_STATUS;
1670 			if (where == STATUS_LEFT)
1671 				key = KEYC_TRIPLECLICK3_STATUS_LEFT;
1672 			if (where == STATUS_RIGHT)
1673 				key = KEYC_TRIPLECLICK3_STATUS_RIGHT;
1674 			if (where == STATUS_DEFAULT)
1675 				key = KEYC_TRIPLECLICK3_STATUS_DEFAULT;
1676 			if (where == BORDER)
1677 				key = KEYC_TRIPLECLICK3_BORDER;
1678 			break;
1679 		case MOUSE_BUTTON_6:
1680 			if (where == PANE)
1681 				key = KEYC_TRIPLECLICK6_PANE;
1682 			if (where == STATUS)
1683 				key = KEYC_TRIPLECLICK6_STATUS;
1684 			if (where == STATUS_LEFT)
1685 				key = KEYC_TRIPLECLICK6_STATUS_LEFT;
1686 			if (where == STATUS_RIGHT)
1687 				key = KEYC_TRIPLECLICK6_STATUS_RIGHT;
1688 			if (where == STATUS_DEFAULT)
1689 				key = KEYC_TRIPLECLICK6_STATUS_DEFAULT;
1690 			if (where == BORDER)
1691 				key = KEYC_TRIPLECLICK6_BORDER;
1692 			break;
1693 		case MOUSE_BUTTON_7:
1694 			if (where == PANE)
1695 				key = KEYC_TRIPLECLICK7_PANE;
1696 			if (where == STATUS)
1697 				key = KEYC_TRIPLECLICK7_STATUS;
1698 			if (where == STATUS_LEFT)
1699 				key = KEYC_TRIPLECLICK7_STATUS_LEFT;
1700 			if (where == STATUS_RIGHT)
1701 				key = KEYC_TRIPLECLICK7_STATUS_RIGHT;
1702 			if (where == STATUS_DEFAULT)
1703 				key = KEYC_TRIPLECLICK7_STATUS_DEFAULT;
1704 			if (where == BORDER)
1705 				key = KEYC_TRIPLECLICK7_BORDER;
1706 			break;
1707 		case MOUSE_BUTTON_8:
1708 			if (where == PANE)
1709 				key = KEYC_TRIPLECLICK8_PANE;
1710 			if (where == STATUS)
1711 				key = KEYC_TRIPLECLICK8_STATUS;
1712 			if (where == STATUS_LEFT)
1713 				key = KEYC_TRIPLECLICK8_STATUS_LEFT;
1714 			if (where == STATUS_RIGHT)
1715 				key = KEYC_TRIPLECLICK8_STATUS_RIGHT;
1716 			if (where == STATUS_DEFAULT)
1717 				key = KEYC_TRIPLECLICK8_STATUS_DEFAULT;
1718 			if (where == BORDER)
1719 				key = KEYC_TRIPLECLICK8_BORDER;
1720 			break;
1721 		case MOUSE_BUTTON_9:
1722 			if (where == PANE)
1723 				key = KEYC_TRIPLECLICK9_PANE;
1724 			if (where == STATUS)
1725 				key = KEYC_TRIPLECLICK9_STATUS;
1726 			if (where == STATUS_LEFT)
1727 				key = KEYC_TRIPLECLICK9_STATUS_LEFT;
1728 			if (where == STATUS_RIGHT)
1729 				key = KEYC_TRIPLECLICK9_STATUS_RIGHT;
1730 			if (where == STATUS_DEFAULT)
1731 				key = KEYC_TRIPLECLICK9_STATUS_DEFAULT;
1732 			if (where == BORDER)
1733 				key = KEYC_TRIPLECLICK9_BORDER;
1734 			break;
1735 		case MOUSE_BUTTON_10:
1736 			if (where == PANE)
1737 				key = KEYC_TRIPLECLICK10_PANE;
1738 			if (where == STATUS)
1739 				key = KEYC_TRIPLECLICK10_STATUS;
1740 			if (where == STATUS_LEFT)
1741 				key = KEYC_TRIPLECLICK10_STATUS_LEFT;
1742 			if (where == STATUS_RIGHT)
1743 				key = KEYC_TRIPLECLICK10_STATUS_RIGHT;
1744 			if (where == STATUS_DEFAULT)
1745 				key = KEYC_TRIPLECLICK10_STATUS_DEFAULT;
1746 			if (where == BORDER)
1747 				key = KEYC_TRIPLECLICK10_BORDER;
1748 			break;
1749 		case MOUSE_BUTTON_11:
1750 			if (where == PANE)
1751 				key = KEYC_TRIPLECLICK11_PANE;
1752 			if (where == STATUS)
1753 				key = KEYC_TRIPLECLICK11_STATUS;
1754 			if (where == STATUS_LEFT)
1755 				key = KEYC_TRIPLECLICK11_STATUS_LEFT;
1756 			if (where == STATUS_RIGHT)
1757 				key = KEYC_TRIPLECLICK11_STATUS_RIGHT;
1758 			if (where == STATUS_DEFAULT)
1759 				key = KEYC_TRIPLECLICK11_STATUS_DEFAULT;
1760 			if (where == BORDER)
1761 				key = KEYC_TRIPLECLICK11_BORDER;
1762 			break;
1763 		}
1764 		break;
1765 	}
1766 	if (key == KEYC_UNKNOWN)
1767 		return (KEYC_UNKNOWN);
1768 
1769 out:
1770 	/* Apply modifiers if any. */
1771 	if (b & MOUSE_MASK_META)
1772 		key |= KEYC_META;
1773 	if (b & MOUSE_MASK_CTRL)
1774 		key |= KEYC_CTRL;
1775 	if (b & MOUSE_MASK_SHIFT)
1776 		key |= KEYC_SHIFT;
1777 
1778 	if (log_get_level() != 0)
1779 		log_debug("mouse key is %s", key_string_lookup_key (key, 1));
1780 	return (key);
1781 }
1782 
1783 /* Is this a bracket paste key? */
1784 static int
1785 server_client_is_bracket_pasting(struct client *c, key_code key)
1786 {
1787 	if (key == KEYC_PASTE_START) {
1788 		c->flags |= CLIENT_BRACKETPASTING;
1789 		log_debug("%s: bracket paste on", c->name);
1790 		return (1);
1791 	}
1792 
1793 	if (key == KEYC_PASTE_END) {
1794 		c->flags &= ~CLIENT_BRACKETPASTING;
1795 		log_debug("%s: bracket paste off", c->name);
1796 		return (1);
1797 	}
1798 
1799 	return !!(c->flags & CLIENT_BRACKETPASTING);
1800 }
1801 
1802 /* Is this fast enough to probably be a paste? */
1803 static int
1804 server_client_assume_paste(struct session *s)
1805 {
1806 	struct timeval	tv;
1807 	int		t;
1808 
1809 	if ((t = options_get_number(s->options, "assume-paste-time")) == 0)
1810 		return (0);
1811 
1812 	timersub(&s->activity_time, &s->last_activity_time, &tv);
1813 	if (tv.tv_sec == 0 && tv.tv_usec < t * 1000) {
1814 		log_debug("session %s pasting (flag %d)", s->name,
1815 		    !!(s->flags & SESSION_PASTING));
1816 		if (s->flags & SESSION_PASTING)
1817 			return (1);
1818 		s->flags |= SESSION_PASTING;
1819 		return (0);
1820 	}
1821 	log_debug("session %s not pasting", s->name);
1822 	s->flags &= ~SESSION_PASTING;
1823 	return (0);
1824 }
1825 
1826 /* Has the latest client changed? */
1827 static void
1828 server_client_update_latest(struct client *c)
1829 {
1830 	struct window	*w;
1831 
1832 	if (c->session == NULL)
1833 		return;
1834 	w = c->session->curw->window;
1835 
1836 	if (w->latest == c)
1837 		return;
1838 	w->latest = c;
1839 
1840 	if (options_get_number(w->options, "window-size") == WINDOW_SIZE_LATEST)
1841 		recalculate_size(w, 0);
1842 
1843 	notify_client("client-active", c);
1844 }
1845 
1846 /*
1847  * Handle data key input from client. This owns and can modify the key event it
1848  * is given and is responsible for freeing it.
1849  */
1850 static enum cmd_retval
1851 server_client_key_callback(struct cmdq_item *item, void *data)
1852 {
1853 	struct client			*c = cmdq_get_client(item);
1854 	struct key_event		*event = data;
1855 	key_code			 key = event->key;
1856 	struct mouse_event		*m = &event->m;
1857 	struct session			*s = c->session;
1858 	struct winlink			*wl;
1859 	struct window_pane		*wp;
1860 	struct window_mode_entry	*wme;
1861 	struct timeval			 tv;
1862 	struct key_table		*table, *first;
1863 	struct key_binding		*bd;
1864 	int				 xtimeout, flags;
1865 	struct cmd_find_state		 fs;
1866 	key_code			 key0, prefix, prefix2;
1867 
1868 	/* Check the client is good to accept input. */
1869 	if (s == NULL || (c->flags & CLIENT_UNATTACHEDFLAGS))
1870 		goto out;
1871 	wl = s->curw;
1872 
1873 	/* Update the activity timer. */
1874 	if (gettimeofday(&c->activity_time, NULL) != 0)
1875 		fatal("gettimeofday failed");
1876 	session_update_activity(s, &c->activity_time);
1877 
1878 	/* Check for mouse keys. */
1879 	m->valid = 0;
1880 	if (key == KEYC_MOUSE || key == KEYC_DOUBLECLICK) {
1881 		if (c->flags & CLIENT_READONLY)
1882 			goto out;
1883 		key = server_client_check_mouse(c, event);
1884 		if (key == KEYC_UNKNOWN)
1885 			goto out;
1886 
1887 		m->valid = 1;
1888 		m->key = key;
1889 
1890 		/*
1891 		 * Mouse drag is in progress, so fire the callback (now that
1892 		 * the mouse event is valid).
1893 		 */
1894 		if ((key & KEYC_MASK_KEY) == KEYC_DRAGGING) {
1895 			c->tty.mouse_drag_update(c, m);
1896 			goto out;
1897 		}
1898 		event->key = key;
1899 	}
1900 
1901 	/* Find affected pane. */
1902 	if (!KEYC_IS_MOUSE(key) || cmd_find_from_mouse(&fs, m, 0) != 0)
1903 		cmd_find_from_client(&fs, c, 0);
1904 	wp = fs.wp;
1905 
1906 	/* Forward mouse keys if disabled. */
1907 	if (KEYC_IS_MOUSE(key) && !options_get_number(s->options, "mouse"))
1908 		goto forward_key;
1909 
1910 	/* Forward if bracket pasting. */
1911 	if (server_client_is_bracket_pasting(c, key))
1912 		goto forward_key;
1913 
1914 	/* Treat everything as a regular key when pasting is detected. */
1915 	if (!KEYC_IS_MOUSE(key) &&
1916 	    (~key & KEYC_SENT) &&
1917 	    server_client_assume_paste(s))
1918 		goto forward_key;
1919 
1920 	/*
1921 	 * Work out the current key table. If the pane is in a mode, use
1922 	 * the mode table instead of the default key table.
1923 	 */
1924 	if (server_client_is_default_key_table(c, c->keytable) &&
1925 	    wp != NULL &&
1926 	    (wme = TAILQ_FIRST(&wp->modes)) != NULL &&
1927 	    wme->mode->key_table != NULL)
1928 		table = key_bindings_get_table(wme->mode->key_table(wme), 1);
1929 	else
1930 		table = c->keytable;
1931 	first = table;
1932 
1933 table_changed:
1934 	/*
1935 	 * The prefix always takes precedence and forces a switch to the prefix
1936 	 * table, unless we are already there.
1937 	 */
1938 	prefix = (key_code)options_get_number(s->options, "prefix");
1939 	prefix2 = (key_code)options_get_number(s->options, "prefix2");
1940 	key0 = (key & (KEYC_MASK_KEY|KEYC_MASK_MODIFIERS));
1941 	if ((key0 == (prefix & (KEYC_MASK_KEY|KEYC_MASK_MODIFIERS)) ||
1942 	    key0 == (prefix2 & (KEYC_MASK_KEY|KEYC_MASK_MODIFIERS))) &&
1943 	    strcmp(table->name, "prefix") != 0) {
1944 		server_client_set_key_table(c, "prefix");
1945 		server_status_client(c);
1946 		goto out;
1947 	}
1948 	flags = c->flags;
1949 
1950 try_again:
1951 	/* Log key table. */
1952 	if (wp == NULL)
1953 		log_debug("key table %s (no pane)", table->name);
1954 	else
1955 		log_debug("key table %s (pane %%%u)", table->name, wp->id);
1956 	if (c->flags & CLIENT_REPEAT)
1957 		log_debug("currently repeating");
1958 
1959 	/* Try to see if there is a key binding in the current table. */
1960 	bd = key_bindings_get(table, key0);
1961 	if (bd != NULL) {
1962 		/*
1963 		 * Key was matched in this table. If currently repeating but a
1964 		 * non-repeating binding was found, stop repeating and try
1965 		 * again in the root table.
1966 		 */
1967 		if ((c->flags & CLIENT_REPEAT) &&
1968 		    (~bd->flags & KEY_BINDING_REPEAT)) {
1969 			log_debug("found in key table %s (not repeating)",
1970 			    table->name);
1971 			server_client_set_key_table(c, NULL);
1972 			first = table = c->keytable;
1973 			c->flags &= ~CLIENT_REPEAT;
1974 			server_status_client(c);
1975 			goto table_changed;
1976 		}
1977 		log_debug("found in key table %s", table->name);
1978 
1979 		/*
1980 		 * Take a reference to this table to make sure the key binding
1981 		 * doesn't disappear.
1982 		 */
1983 		table->references++;
1984 
1985 		/*
1986 		 * If this is a repeating key, start the timer. Otherwise reset
1987 		 * the client back to the root table.
1988 		 */
1989 		xtimeout = options_get_number(s->options, "repeat-time");
1990 		if (xtimeout != 0 && (bd->flags & KEY_BINDING_REPEAT)) {
1991 			c->flags |= CLIENT_REPEAT;
1992 
1993 			tv.tv_sec = xtimeout / 1000;
1994 			tv.tv_usec = (xtimeout % 1000) * 1000L;
1995 			evtimer_del(&c->repeat_timer);
1996 			evtimer_add(&c->repeat_timer, &tv);
1997 		} else {
1998 			c->flags &= ~CLIENT_REPEAT;
1999 			server_client_set_key_table(c, NULL);
2000 		}
2001 		server_status_client(c);
2002 
2003 		/* Execute the key binding. */
2004 		key_bindings_dispatch(bd, item, c, event, &fs);
2005 		key_bindings_unref_table(table);
2006 		goto out;
2007 	}
2008 
2009 	/*
2010 	 * No match, try the ANY key.
2011 	 */
2012 	if (key0 != KEYC_ANY) {
2013 		key0 = KEYC_ANY;
2014 		goto try_again;
2015 	}
2016 
2017 	/*
2018 	 * No match in this table. If not in the root table or if repeating,
2019 	 * switch the client back to the root table and try again.
2020 	 */
2021 	log_debug("not found in key table %s", table->name);
2022 	if (!server_client_is_default_key_table(c, table) ||
2023 	    (c->flags & CLIENT_REPEAT)) {
2024 		log_debug("trying in root table");
2025 		server_client_set_key_table(c, NULL);
2026 		table = c->keytable;
2027 		if (c->flags & CLIENT_REPEAT)
2028 			first = table;
2029 		c->flags &= ~CLIENT_REPEAT;
2030 		server_status_client(c);
2031 		goto table_changed;
2032 	}
2033 
2034 	/*
2035 	 * No match in the root table either. If this wasn't the first table
2036 	 * tried, don't pass the key to the pane.
2037 	 */
2038 	if (first != table && (~flags & CLIENT_REPEAT)) {
2039 		server_client_set_key_table(c, NULL);
2040 		server_status_client(c);
2041 		goto out;
2042 	}
2043 
2044 forward_key:
2045 	if (c->flags & CLIENT_READONLY)
2046 		goto out;
2047 	if (wp != NULL)
2048 		window_pane_key(wp, c, s, wl, key, m);
2049 
2050 out:
2051 	if (s != NULL && key != KEYC_FOCUS_OUT)
2052 		server_client_update_latest(c);
2053 	free(event);
2054 	return (CMD_RETURN_NORMAL);
2055 }
2056 
2057 /* Handle a key event. */
2058 int
2059 server_client_handle_key(struct client *c, struct key_event *event)
2060 {
2061 	struct session		*s = c->session;
2062 	struct cmdq_item	*item;
2063 
2064 	/* Check the client is good to accept input. */
2065 	if (s == NULL || (c->flags & CLIENT_UNATTACHEDFLAGS))
2066 		return (0);
2067 
2068 	/*
2069 	 * Key presses in overlay mode and the command prompt are a special
2070 	 * case. The queue might be blocked so they need to be processed
2071 	 * immediately rather than queued.
2072 	 */
2073 	if (~c->flags & CLIENT_READONLY) {
2074 		if (c->message_string != NULL) {
2075 			if (c->message_ignore_keys)
2076 				return (0);
2077 			status_message_clear(c);
2078 		}
2079 		if (c->overlay_key != NULL) {
2080 			switch (c->overlay_key(c, c->overlay_data, event)) {
2081 			case 0:
2082 				return (0);
2083 			case 1:
2084 				server_client_clear_overlay(c);
2085 				return (0);
2086 			}
2087 		}
2088 		server_client_clear_overlay(c);
2089 		if (c->prompt_string != NULL) {
2090 			if (status_prompt_key(c, event->key) == 0)
2091 				return (0);
2092 		}
2093 	}
2094 
2095 	/*
2096 	 * Add the key to the queue so it happens after any commands queued by
2097 	 * previous keys.
2098 	 */
2099 	item = cmdq_get_callback(server_client_key_callback, event);
2100 	cmdq_append(c, item);
2101 	return (1);
2102 }
2103 
2104 /* Client functions that need to happen every loop. */
2105 void
2106 server_client_loop(void)
2107 {
2108 	struct client		*c;
2109 	struct window		*w;
2110 	struct window_pane	*wp;
2111 
2112 	/* Check for window resize. This is done before redrawing. */
2113 	RB_FOREACH(w, windows, &windows)
2114 		server_client_check_window_resize(w);
2115 
2116 	/* Check clients. */
2117 	TAILQ_FOREACH(c, &clients, entry) {
2118 		server_client_check_exit(c);
2119 		if (c->session != NULL) {
2120 			server_client_check_modes(c);
2121 			server_client_check_redraw(c);
2122 			server_client_reset_state(c);
2123 		}
2124 	}
2125 
2126 	/*
2127 	 * Any windows will have been redrawn as part of clients, so clear
2128 	 * their flags now.
2129 	 */
2130 	RB_FOREACH(w, windows, &windows) {
2131 		TAILQ_FOREACH(wp, &w->panes, entry) {
2132 			if (wp->fd != -1) {
2133 				server_client_check_pane_resize(wp);
2134 				server_client_check_pane_buffer(wp);
2135 			}
2136 			wp->flags &= ~PANE_REDRAW;
2137 		}
2138 		check_window_name(w);
2139 	}
2140 }
2141 
2142 /* Check if window needs to be resized. */
2143 static void
2144 server_client_check_window_resize(struct window *w)
2145 {
2146 	struct winlink	*wl;
2147 
2148 	if (~w->flags & WINDOW_RESIZE)
2149 		return;
2150 
2151 	TAILQ_FOREACH(wl, &w->winlinks, wentry) {
2152 		if (wl->session->attached != 0 && wl->session->curw == wl)
2153 			break;
2154 	}
2155 	if (wl == NULL)
2156 		return;
2157 
2158 	log_debug("%s: resizing window @%u", __func__, w->id);
2159 	resize_window(w, w->new_sx, w->new_sy, w->new_xpixel, w->new_ypixel);
2160 }
2161 
2162 /* Resize timer event. */
2163 static void
2164 server_client_resize_timer(__unused int fd, __unused short events, void *data)
2165 {
2166 	struct window_pane	*wp = data;
2167 
2168 	log_debug("%s: %%%u resize timer expired", __func__, wp->id);
2169 	evtimer_del(&wp->resize_timer);
2170 }
2171 
2172 /* Check if pane should be resized. */
2173 static void
2174 server_client_check_pane_resize(struct window_pane *wp)
2175 {
2176 	struct window_pane_resize	*r;
2177 	struct window_pane_resize	*r1;
2178 	struct window_pane_resize	*first;
2179 	struct window_pane_resize	*last;
2180 	struct timeval			 tv = { .tv_usec = 250000 };
2181 
2182 	if (TAILQ_EMPTY(&wp->resize_queue))
2183 		return;
2184 
2185 	if (!event_initialized(&wp->resize_timer))
2186 		evtimer_set(&wp->resize_timer, server_client_resize_timer, wp);
2187 	if (evtimer_pending(&wp->resize_timer, NULL))
2188 		return;
2189 
2190 	log_debug("%s: %%%u needs to be resized", __func__, wp->id);
2191 	TAILQ_FOREACH(r, &wp->resize_queue, entry) {
2192 		log_debug("queued resize: %ux%u -> %ux%u", r->osx, r->osy,
2193 		    r->sx, r->sy);
2194 	}
2195 
2196 	/*
2197 	 * There are three cases that matter:
2198 	 *
2199 	 * - Only one resize. It can just be applied.
2200 	 *
2201 	 * - Multiple resizes and the ending size is different from the
2202 	 *   starting size. We can discard all resizes except the most recent.
2203 	 *
2204 	 * - Multiple resizes and the ending size is the same as the starting
2205 	 *   size. We must resize at least twice to force the application to
2206 	 *   redraw. So apply the first and leave the last on the queue for
2207 	 *   next time.
2208 	 */
2209 	first = TAILQ_FIRST(&wp->resize_queue);
2210 	last = TAILQ_LAST(&wp->resize_queue, window_pane_resizes);
2211 	if (first == last) {
2212 		/* Only one resize. */
2213 		window_pane_send_resize(wp, first->sx, first->sy);
2214 		TAILQ_REMOVE(&wp->resize_queue, first, entry);
2215 		free(first);
2216 	} else if (last->sx != first->osx || last->sy != first->osy) {
2217 		/* Multiple resizes ending up with a different size. */
2218 		window_pane_send_resize(wp, last->sx, last->sy);
2219 		TAILQ_FOREACH_SAFE(r, &wp->resize_queue, entry, r1) {
2220 			TAILQ_REMOVE(&wp->resize_queue, r, entry);
2221 			free(r);
2222 		}
2223 	} else {
2224 		/*
2225 		 * Multiple resizes ending up with the same size. There will
2226 		 * not be more than one to the same size in succession so we
2227 		 * can just use the last-but-one on the list and leave the last
2228 		 * for later. We reduce the time until the next check to avoid
2229 		 * a long delay between the resizes.
2230 		 */
2231 		r = TAILQ_PREV(last, window_pane_resizes, entry);
2232 		window_pane_send_resize(wp, r->sx, r->sy);
2233 		TAILQ_FOREACH_SAFE(r, &wp->resize_queue, entry, r1) {
2234 			if (r == last)
2235 				break;
2236 			TAILQ_REMOVE(&wp->resize_queue, r, entry);
2237 			free(r);
2238 		}
2239 		tv.tv_usec = 10000;
2240 	}
2241 	evtimer_add(&wp->resize_timer, &tv);
2242 }
2243 
2244 /* Check pane buffer size. */
2245 static void
2246 server_client_check_pane_buffer(struct window_pane *wp)
2247 {
2248 	struct evbuffer			*evb = wp->event->input;
2249 	size_t				 minimum;
2250 	struct client			*c;
2251 	struct window_pane_offset	*wpo;
2252 	int				 off = 1, flag;
2253 	u_int				 attached_clients = 0;
2254 	size_t				 new_size;
2255 
2256 	/*
2257 	 * Work out the minimum used size. This is the most that can be removed
2258 	 * from the buffer.
2259 	 */
2260 	minimum = wp->offset.used;
2261 	if (wp->pipe_fd != -1 && wp->pipe_offset.used < minimum)
2262 		minimum = wp->pipe_offset.used;
2263 	TAILQ_FOREACH(c, &clients, entry) {
2264 		if (c->session == NULL)
2265 			continue;
2266 		attached_clients++;
2267 
2268 		if (~c->flags & CLIENT_CONTROL) {
2269 			off = 0;
2270 			continue;
2271 		}
2272 		wpo = control_pane_offset(c, wp, &flag);
2273 		if (wpo == NULL) {
2274 			if (!flag)
2275 				off = 0;
2276 			continue;
2277 		}
2278 		if (!flag)
2279 			off = 0;
2280 
2281 		window_pane_get_new_data(wp, wpo, &new_size);
2282 		log_debug("%s: %s has %zu bytes used and %zu left for %%%u",
2283 		    __func__, c->name, wpo->used - wp->base_offset, new_size,
2284 		    wp->id);
2285 		if (wpo->used < minimum)
2286 			minimum = wpo->used;
2287 	}
2288 	if (attached_clients == 0)
2289 		off = 0;
2290 	minimum -= wp->base_offset;
2291 	if (minimum == 0)
2292 		goto out;
2293 
2294 	/* Drain the buffer. */
2295 	log_debug("%s: %%%u has %zu minimum (of %zu) bytes used", __func__,
2296 	    wp->id, minimum, EVBUFFER_LENGTH(evb));
2297 	evbuffer_drain(evb, minimum);
2298 
2299 	/*
2300 	 * Adjust the base offset. If it would roll over, all the offsets into
2301 	 * the buffer need to be adjusted.
2302 	 */
2303 	if (wp->base_offset > SIZE_MAX - minimum) {
2304 		log_debug("%s: %%%u base offset has wrapped", __func__, wp->id);
2305 		wp->offset.used -= wp->base_offset;
2306 		if (wp->pipe_fd != -1)
2307 			wp->pipe_offset.used -= wp->base_offset;
2308 		TAILQ_FOREACH(c, &clients, entry) {
2309 			if (c->session == NULL || (~c->flags & CLIENT_CONTROL))
2310 				continue;
2311 			wpo = control_pane_offset(c, wp, &flag);
2312 			if (wpo != NULL && !flag)
2313 				wpo->used -= wp->base_offset;
2314 		}
2315 		wp->base_offset = minimum;
2316 	} else
2317 		wp->base_offset += minimum;
2318 
2319 out:
2320 	/*
2321 	 * If there is data remaining, and there are no clients able to consume
2322 	 * it, do not read any more. This is true when there are attached
2323 	 * clients, all of which are control clients which are not able to
2324 	 * accept any more data.
2325 	 */
2326 	log_debug("%s: pane %%%u is %s", __func__, wp->id, off ? "off" : "on");
2327 	if (off)
2328 		bufferevent_disable(wp->event, EV_READ);
2329 	else
2330 		bufferevent_enable(wp->event, EV_READ);
2331 }
2332 
2333 /*
2334  * Update cursor position and mode settings. The scroll region and attributes
2335  * are cleared when idle (waiting for an event) as this is the most likely time
2336  * a user may interrupt tmux, for example with ~^Z in ssh(1). This is a
2337  * compromise between excessive resets and likelihood of an interrupt.
2338  *
2339  * tty_region/tty_reset/tty_update_mode already take care of not resetting
2340  * things that are already in their default state.
2341  */
2342 static void
2343 server_client_reset_state(struct client *c)
2344 {
2345 	struct tty		*tty = &c->tty;
2346 	struct window		*w = c->session->curw->window;
2347 	struct window_pane	*wp = server_client_get_pane(c), *loop;
2348 	struct screen		*s = NULL;
2349 	struct options		*oo = c->session->options;
2350 	int			 mode = 0, cursor, flags, n;
2351 	u_int			 cx = 0, cy = 0, ox, oy, sx, sy;
2352 
2353 	if (c->flags & (CLIENT_CONTROL|CLIENT_SUSPENDED))
2354 		return;
2355 
2356 	/* Disable the block flag. */
2357 	flags = (tty->flags & TTY_BLOCK);
2358 	tty->flags &= ~TTY_BLOCK;
2359 
2360 	/* Get mode from overlay if any, else from screen. */
2361 	if (c->overlay_draw != NULL) {
2362 		if (c->overlay_mode != NULL)
2363 			s = c->overlay_mode(c, c->overlay_data, &cx, &cy);
2364 	} else
2365 		s = wp->screen;
2366 	if (s != NULL)
2367 		mode = s->mode;
2368 	if (log_get_level() != 0) {
2369 		log_debug("%s: client %s mode %s", __func__, c->name,
2370 		    screen_mode_to_string(mode));
2371 	}
2372 
2373 	/* Reset region and margin. */
2374 	tty_region_off(tty);
2375 	tty_margin_off(tty);
2376 
2377 	/* Move cursor to pane cursor and offset. */
2378 	if (c->prompt_string != NULL) {
2379 		n = options_get_number(c->session->options, "status-position");
2380 		if (n == 0)
2381 			cy = 0;
2382 		else {
2383 			n = status_line_size(c);
2384 			if (n == 0)
2385 				cy = tty->sy - 1;
2386 			else
2387 				cy = tty->sy - n;
2388 		}
2389 		cx = c->prompt_cursor;
2390 		mode &= ~MODE_CURSOR;
2391 	} else if (c->overlay_draw == NULL) {
2392 		cursor = 0;
2393 		tty_window_offset(tty, &ox, &oy, &sx, &sy);
2394 		if (wp->xoff + s->cx >= ox && wp->xoff + s->cx <= ox + sx &&
2395 		    wp->yoff + s->cy >= oy && wp->yoff + s->cy <= oy + sy) {
2396 			cursor = 1;
2397 
2398 			cx = wp->xoff + s->cx - ox;
2399 			cy = wp->yoff + s->cy - oy;
2400 
2401 			if (status_at_line(c) == 0)
2402 				cy += status_line_size(c);
2403 		}
2404 		if (!cursor)
2405 			mode &= ~MODE_CURSOR;
2406 	}
2407 	log_debug("%s: cursor to %u,%u", __func__, cx, cy);
2408 	tty_cursor(tty, cx, cy);
2409 
2410 	/*
2411 	 * Set mouse mode if requested. To support dragging, always use button
2412 	 * mode.
2413 	 */
2414 	if (options_get_number(oo, "mouse")) {
2415 		if (c->overlay_draw == NULL) {
2416 			mode &= ~ALL_MOUSE_MODES;
2417 			TAILQ_FOREACH(loop, &w->panes, entry) {
2418 				if (loop->screen->mode & MODE_MOUSE_ALL)
2419 					mode |= MODE_MOUSE_ALL;
2420 			}
2421 		}
2422 		if (~mode & MODE_MOUSE_ALL)
2423 			mode |= MODE_MOUSE_BUTTON;
2424 	}
2425 
2426 	/* Clear bracketed paste mode if at the prompt. */
2427 	if (c->overlay_draw == NULL && c->prompt_string != NULL)
2428 		mode &= ~MODE_BRACKETPASTE;
2429 
2430 	/* Set the terminal mode and reset attributes. */
2431 	tty_update_mode(tty, mode, s);
2432 	tty_reset(tty);
2433 
2434 	/* All writing must be done, send a sync end (if it was started). */
2435 	tty_sync_end(tty);
2436 	tty->flags |= flags;
2437 }
2438 
2439 /* Repeat time callback. */
2440 static void
2441 server_client_repeat_timer(__unused int fd, __unused short events, void *data)
2442 {
2443 	struct client	*c = data;
2444 
2445 	if (c->flags & CLIENT_REPEAT) {
2446 		server_client_set_key_table(c, NULL);
2447 		c->flags &= ~CLIENT_REPEAT;
2448 		server_status_client(c);
2449 	}
2450 }
2451 
2452 /* Double-click callback. */
2453 static void
2454 server_client_click_timer(__unused int fd, __unused short events, void *data)
2455 {
2456 	struct client		*c = data;
2457 	struct key_event	*event;
2458 
2459 	log_debug("click timer expired");
2460 
2461 	if (c->flags & CLIENT_TRIPLECLICK) {
2462 		/*
2463 		 * Waiting for a third click that hasn't happened, so this must
2464 		 * have been a double click.
2465 		 */
2466 		event = xmalloc(sizeof *event);
2467 		event->key = KEYC_DOUBLECLICK;
2468 		memcpy(&event->m, &c->click_event, sizeof event->m);
2469 		if (!server_client_handle_key(c, event))
2470 			free(event);
2471 	}
2472 	c->flags &= ~(CLIENT_DOUBLECLICK|CLIENT_TRIPLECLICK);
2473 }
2474 
2475 /* Check if client should be exited. */
2476 static void
2477 server_client_check_exit(struct client *c)
2478 {
2479 	struct client_file	*cf;
2480 	const char		*name = c->exit_session;
2481 	char			*data;
2482 	size_t			 size, msize;
2483 
2484 	if (c->flags & (CLIENT_DEAD|CLIENT_EXITED))
2485 		return;
2486 	if (~c->flags & CLIENT_EXIT)
2487 		return;
2488 
2489 	if (c->flags & CLIENT_CONTROL) {
2490 		control_discard(c);
2491 		if (!control_all_done(c))
2492 			return;
2493 	}
2494 	RB_FOREACH(cf, client_files, &c->files) {
2495 		if (EVBUFFER_LENGTH(cf->buffer) != 0)
2496 			return;
2497 	}
2498 	c->flags |= CLIENT_EXITED;
2499 
2500 	switch (c->exit_type) {
2501 	case CLIENT_EXIT_RETURN:
2502 		if (c->exit_message != NULL)
2503 			msize = strlen(c->exit_message) + 1;
2504 		else
2505 			msize = 0;
2506 		size = (sizeof c->retval) + msize;
2507 		data = xmalloc(size);
2508 		memcpy(data, &c->retval, sizeof c->retval);
2509 		if (c->exit_message != NULL)
2510 			memcpy(data + sizeof c->retval, c->exit_message, msize);
2511 		proc_send(c->peer, MSG_EXIT, -1, data, size);
2512 		free(data);
2513 		break;
2514 	case CLIENT_EXIT_SHUTDOWN:
2515 		proc_send(c->peer, MSG_SHUTDOWN, -1, NULL, 0);
2516 		break;
2517 	case CLIENT_EXIT_DETACH:
2518 		proc_send(c->peer, c->exit_msgtype, -1, name, strlen(name) + 1);
2519 		break;
2520 	}
2521 	free(c->exit_session);
2522 	free(c->exit_message);
2523 }
2524 
2525 /* Redraw timer callback. */
2526 static void
2527 server_client_redraw_timer(__unused int fd, __unused short events,
2528     __unused void *data)
2529 {
2530 	log_debug("redraw timer fired");
2531 }
2532 
2533 /*
2534  * Check if modes need to be updated. Only modes in the current window are
2535  * updated and it is done when the status line is redrawn.
2536  */
2537 static void
2538 server_client_check_modes(struct client *c)
2539 {
2540 	struct window			*w = c->session->curw->window;
2541 	struct window_pane		*wp;
2542 	struct window_mode_entry	*wme;
2543 
2544 	if (c->flags & (CLIENT_CONTROL|CLIENT_SUSPENDED))
2545 		return;
2546 	if (~c->flags & CLIENT_REDRAWSTATUS)
2547 		return;
2548 	TAILQ_FOREACH(wp, &w->panes, entry) {
2549 		wme = TAILQ_FIRST(&wp->modes);
2550 		if (wme != NULL && wme->mode->update != NULL)
2551 			wme->mode->update(wme);
2552 	}
2553 }
2554 
2555 /* Check for client redraws. */
2556 static void
2557 server_client_check_redraw(struct client *c)
2558 {
2559 	struct session		*s = c->session;
2560 	struct tty		*tty = &c->tty;
2561 	struct window		*w = c->session->curw->window;
2562 	struct window_pane	*wp;
2563 	int			 needed, flags, mode = tty->mode, new_flags = 0;
2564 	int			 redraw;
2565 	u_int			 bit = 0;
2566 	struct timeval		 tv = { .tv_usec = 1000 };
2567 	static struct event	 ev;
2568 	size_t			 left;
2569 
2570 	if (c->flags & (CLIENT_CONTROL|CLIENT_SUSPENDED))
2571 		return;
2572 	if (c->flags & CLIENT_ALLREDRAWFLAGS) {
2573 		log_debug("%s: redraw%s%s%s%s%s", c->name,
2574 		    (c->flags & CLIENT_REDRAWWINDOW) ? " window" : "",
2575 		    (c->flags & CLIENT_REDRAWSTATUS) ? " status" : "",
2576 		    (c->flags & CLIENT_REDRAWBORDERS) ? " borders" : "",
2577 		    (c->flags & CLIENT_REDRAWOVERLAY) ? " overlay" : "",
2578 		    (c->flags & CLIENT_REDRAWPANES) ? " panes" : "");
2579 	}
2580 
2581 	/*
2582 	 * If there is outstanding data, defer the redraw until it has been
2583 	 * consumed. We can just add a timer to get out of the event loop and
2584 	 * end up back here.
2585 	 */
2586 	needed = 0;
2587 	if (c->flags & CLIENT_ALLREDRAWFLAGS)
2588 		needed = 1;
2589 	else {
2590 		TAILQ_FOREACH(wp, &w->panes, entry) {
2591 			if (wp->flags & PANE_REDRAW) {
2592 				needed = 1;
2593 				break;
2594 			}
2595 		}
2596 		if (needed)
2597 			new_flags |= CLIENT_REDRAWPANES;
2598 	}
2599 	if (needed && (left = EVBUFFER_LENGTH(tty->out)) != 0) {
2600 		log_debug("%s: redraw deferred (%zu left)", c->name, left);
2601 		if (!evtimer_initialized(&ev))
2602 			evtimer_set(&ev, server_client_redraw_timer, NULL);
2603 		if (!evtimer_pending(&ev, NULL)) {
2604 			log_debug("redraw timer started");
2605 			evtimer_add(&ev, &tv);
2606 		}
2607 
2608 		if (~c->flags & CLIENT_REDRAWWINDOW) {
2609 			TAILQ_FOREACH(wp, &w->panes, entry) {
2610 				if (wp->flags & PANE_REDRAW) {
2611 					log_debug("%s: pane %%%u needs redraw",
2612 					    c->name, wp->id);
2613 					c->redraw_panes |= (1 << bit);
2614 				}
2615 				if (++bit == 64) {
2616 					/*
2617 					 * If more that 64 panes, give up and
2618 					 * just redraw the window.
2619 					 */
2620 					new_flags &= CLIENT_REDRAWPANES;
2621 					new_flags |= CLIENT_REDRAWWINDOW;
2622 					break;
2623 				}
2624 			}
2625 			if (c->redraw_panes != 0)
2626 				c->flags |= CLIENT_REDRAWPANES;
2627 		}
2628 		c->flags |= new_flags;
2629 		return;
2630 	} else if (needed)
2631 		log_debug("%s: redraw needed", c->name);
2632 
2633 	flags = tty->flags & (TTY_BLOCK|TTY_FREEZE|TTY_NOCURSOR);
2634 	tty->flags = (tty->flags & ~(TTY_BLOCK|TTY_FREEZE))|TTY_NOCURSOR;
2635 
2636 	if (~c->flags & CLIENT_REDRAWWINDOW) {
2637 		/*
2638 		 * If not redrawing the entire window, check whether each pane
2639 		 * needs to be redrawn.
2640 		 */
2641 		TAILQ_FOREACH(wp, &w->panes, entry) {
2642 			redraw = 0;
2643 			if (wp->flags & PANE_REDRAW)
2644 				redraw = 1;
2645 			else if (c->flags & CLIENT_REDRAWPANES)
2646 				redraw = !!(c->redraw_panes & (1 << bit));
2647 			bit++;
2648 			if (!redraw)
2649 				continue;
2650 			log_debug("%s: redrawing pane %%%u", __func__, wp->id);
2651 			screen_redraw_pane(c, wp);
2652 		}
2653 		c->redraw_panes = 0;
2654 		c->flags &= ~CLIENT_REDRAWPANES;
2655 	}
2656 
2657 	if (c->flags & CLIENT_ALLREDRAWFLAGS) {
2658 		if (options_get_number(s->options, "set-titles")) {
2659 			server_client_set_title(c);
2660 			server_client_set_path(c);
2661 		}
2662 		screen_redraw_screen(c);
2663 	}
2664 
2665 	tty->flags = (tty->flags & ~TTY_NOCURSOR)|(flags & TTY_NOCURSOR);
2666 	tty_update_mode(tty, mode, NULL);
2667 	tty->flags = (tty->flags & ~(TTY_BLOCK|TTY_FREEZE|TTY_NOCURSOR))|flags;
2668 
2669 	c->flags &= ~(CLIENT_ALLREDRAWFLAGS|CLIENT_STATUSFORCE);
2670 
2671 	if (needed) {
2672 		/*
2673 		 * We would have deferred the redraw unless the output buffer
2674 		 * was empty, so we can record how many bytes the redraw
2675 		 * generated.
2676 		 */
2677 		c->redraw = EVBUFFER_LENGTH(tty->out);
2678 		log_debug("%s: redraw added %zu bytes", c->name, c->redraw);
2679 	}
2680 }
2681 
2682 /* Set client title. */
2683 static void
2684 server_client_set_title(struct client *c)
2685 {
2686 	struct session		*s = c->session;
2687 	const char		*template;
2688 	char			*title;
2689 	struct format_tree	*ft;
2690 
2691 	template = options_get_string(s->options, "set-titles-string");
2692 
2693 	ft = format_create(c, NULL, FORMAT_NONE, 0);
2694 	format_defaults(ft, c, NULL, NULL, NULL);
2695 
2696 	title = format_expand_time(ft, template);
2697 	if (c->title == NULL || strcmp(title, c->title) != 0) {
2698 		free(c->title);
2699 		c->title = xstrdup(title);
2700 		tty_set_title(&c->tty, c->title);
2701 	}
2702 	free(title);
2703 
2704 	format_free(ft);
2705 }
2706 
2707 /* Set client path. */
2708 static void
2709 server_client_set_path(struct client *c)
2710 {
2711 	struct session	*s = c->session;
2712 	const char	*path;
2713 
2714 	if (s->curw == NULL)
2715 		return;
2716 	if (s->curw->window->active->base.path == NULL)
2717 		path = "";
2718 	else
2719 		path = s->curw->window->active->base.path;
2720 	if (c->path == NULL || strcmp(path, c->path) != 0) {
2721 		free(c->path);
2722 		c->path = xstrdup(path);
2723 		tty_set_path(&c->tty, c->path);
2724 	}
2725 }
2726 
2727 /* Dispatch message from client. */
2728 static void
2729 server_client_dispatch(struct imsg *imsg, void *arg)
2730 {
2731 	struct client	*c = arg;
2732 	ssize_t		 datalen;
2733 	struct session	*s;
2734 
2735 	if (c->flags & CLIENT_DEAD)
2736 		return;
2737 
2738 	if (imsg == NULL) {
2739 		server_client_lost(c);
2740 		return;
2741 	}
2742 
2743 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
2744 
2745 	switch (imsg->hdr.type) {
2746 	case MSG_IDENTIFY_CLIENTPID:
2747 	case MSG_IDENTIFY_CWD:
2748 	case MSG_IDENTIFY_ENVIRON:
2749 	case MSG_IDENTIFY_FEATURES:
2750 	case MSG_IDENTIFY_FLAGS:
2751 	case MSG_IDENTIFY_LONGFLAGS:
2752 	case MSG_IDENTIFY_STDIN:
2753 	case MSG_IDENTIFY_STDOUT:
2754 	case MSG_IDENTIFY_TERM:
2755 	case MSG_IDENTIFY_TERMINFO:
2756 	case MSG_IDENTIFY_TTYNAME:
2757 	case MSG_IDENTIFY_DONE:
2758 		server_client_dispatch_identify(c, imsg);
2759 		break;
2760 	case MSG_COMMAND:
2761 		server_client_dispatch_command(c, imsg);
2762 		break;
2763 	case MSG_RESIZE:
2764 		if (datalen != 0)
2765 			fatalx("bad MSG_RESIZE size");
2766 
2767 		if (c->flags & CLIENT_CONTROL)
2768 			break;
2769 		server_client_update_latest(c);
2770 		tty_resize(&c->tty);
2771 		tty_repeat_requests(&c->tty);
2772 		recalculate_sizes();
2773 		if (c->overlay_resize == NULL)
2774 			server_client_clear_overlay(c);
2775 		else
2776 			c->overlay_resize(c, c->overlay_data);
2777 		server_redraw_client(c);
2778 		if (c->session != NULL)
2779 			notify_client("client-resized", c);
2780 		break;
2781 	case MSG_EXITING:
2782 		if (datalen != 0)
2783 			fatalx("bad MSG_EXITING size");
2784 		server_client_set_session(c, NULL);
2785 		recalculate_sizes();
2786 		tty_close(&c->tty);
2787 		proc_send(c->peer, MSG_EXITED, -1, NULL, 0);
2788 		break;
2789 	case MSG_WAKEUP:
2790 	case MSG_UNLOCK:
2791 		if (datalen != 0)
2792 			fatalx("bad MSG_WAKEUP size");
2793 
2794 		if (!(c->flags & CLIENT_SUSPENDED))
2795 			break;
2796 		c->flags &= ~CLIENT_SUSPENDED;
2797 
2798 		if (c->fd == -1 || c->session == NULL) /* exited already */
2799 			break;
2800 		s = c->session;
2801 
2802 		if (gettimeofday(&c->activity_time, NULL) != 0)
2803 			fatal("gettimeofday failed");
2804 
2805 		tty_start_tty(&c->tty);
2806 		server_redraw_client(c);
2807 		recalculate_sizes();
2808 
2809 		if (s != NULL)
2810 			session_update_activity(s, &c->activity_time);
2811 		break;
2812 	case MSG_SHELL:
2813 		if (datalen != 0)
2814 			fatalx("bad MSG_SHELL size");
2815 
2816 		server_client_dispatch_shell(c);
2817 		break;
2818 	case MSG_WRITE_READY:
2819 		file_write_ready(&c->files, imsg);
2820 		break;
2821 	case MSG_READ:
2822 		file_read_data(&c->files, imsg);
2823 		break;
2824 	case MSG_READ_DONE:
2825 		file_read_done(&c->files, imsg);
2826 		break;
2827 	}
2828 }
2829 
2830 /* Callback when command is not allowed. */
2831 static enum cmd_retval
2832 server_client_read_only(struct cmdq_item *item, __unused void *data)
2833 {
2834 	cmdq_error(item, "client is read-only");
2835 	return (CMD_RETURN_ERROR);
2836 }
2837 
2838 /* Callback when command is done. */
2839 static enum cmd_retval
2840 server_client_command_done(struct cmdq_item *item, __unused void *data)
2841 {
2842 	struct client	*c = cmdq_get_client(item);
2843 
2844 	if (~c->flags & CLIENT_ATTACHED)
2845 		c->flags |= CLIENT_EXIT;
2846 	else if (~c->flags & CLIENT_EXIT) {
2847 		if (c->flags & CLIENT_CONTROL)
2848 			control_ready(c);
2849 		tty_send_requests(&c->tty);
2850 	}
2851 	return (CMD_RETURN_NORMAL);
2852 }
2853 
2854 /* Handle command message. */
2855 static void
2856 server_client_dispatch_command(struct client *c, struct imsg *imsg)
2857 {
2858 	struct msg_command	  data;
2859 	char			 *buf;
2860 	size_t			  len;
2861 	int			  argc;
2862 	char			**argv, *cause;
2863 	struct cmd_parse_result	 *pr;
2864 	struct args_value	 *values;
2865 	struct cmdq_item	 *new_item;
2866 
2867 	if (c->flags & CLIENT_EXIT)
2868 		return;
2869 
2870 	if (imsg->hdr.len - IMSG_HEADER_SIZE < sizeof data)
2871 		fatalx("bad MSG_COMMAND size");
2872 	memcpy(&data, imsg->data, sizeof data);
2873 
2874 	buf = (char *)imsg->data + sizeof data;
2875 	len = imsg->hdr.len  - IMSG_HEADER_SIZE - sizeof data;
2876 	if (len > 0 && buf[len - 1] != '\0')
2877 		fatalx("bad MSG_COMMAND string");
2878 
2879 	argc = data.argc;
2880 	if (cmd_unpack_argv(buf, len, argc, &argv) != 0) {
2881 		cause = xstrdup("command too long");
2882 		goto error;
2883 	}
2884 
2885 	if (argc == 0) {
2886 		argc = 1;
2887 		argv = xcalloc(1, sizeof *argv);
2888 		*argv = xstrdup("new-session");
2889 	}
2890 
2891 	values = args_from_vector(argc, argv);
2892 	pr = cmd_parse_from_arguments(values, argc, NULL);
2893 	switch (pr->status) {
2894 	case CMD_PARSE_ERROR:
2895 		cause = pr->error;
2896 		goto error;
2897 	case CMD_PARSE_SUCCESS:
2898 		break;
2899 	}
2900 	args_free_values(values, argc);
2901 	free(values);
2902 	cmd_free_argv(argc, argv);
2903 
2904 	if ((c->flags & CLIENT_READONLY) &&
2905 	    !cmd_list_all_have(pr->cmdlist, CMD_READONLY))
2906 		new_item = cmdq_get_callback(server_client_read_only, NULL);
2907 	else
2908 		new_item = cmdq_get_command(pr->cmdlist, NULL);
2909 	cmdq_append(c, new_item);
2910 	cmdq_append(c, cmdq_get_callback(server_client_command_done, NULL));
2911 
2912 	cmd_list_free(pr->cmdlist);
2913 	return;
2914 
2915 error:
2916 	cmd_free_argv(argc, argv);
2917 
2918 	cmdq_append(c, cmdq_get_error(cause));
2919 	free(cause);
2920 
2921 	c->flags |= CLIENT_EXIT;
2922 }
2923 
2924 /* Handle identify message. */
2925 static void
2926 server_client_dispatch_identify(struct client *c, struct imsg *imsg)
2927 {
2928 	const char	*data, *home;
2929 	size_t		 datalen;
2930 	int		 flags, feat;
2931 	uint64_t	 longflags;
2932 	char		*name;
2933 
2934 	if (c->flags & CLIENT_IDENTIFIED)
2935 		fatalx("out-of-order identify message");
2936 
2937 	data = imsg->data;
2938 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
2939 
2940 	switch (imsg->hdr.type)	{
2941 	case MSG_IDENTIFY_FEATURES:
2942 		if (datalen != sizeof feat)
2943 			fatalx("bad MSG_IDENTIFY_FEATURES size");
2944 		memcpy(&feat, data, sizeof feat);
2945 		c->term_features |= feat;
2946 		log_debug("client %p IDENTIFY_FEATURES %s", c,
2947 		    tty_get_features(feat));
2948 		break;
2949 	case MSG_IDENTIFY_FLAGS:
2950 		if (datalen != sizeof flags)
2951 			fatalx("bad MSG_IDENTIFY_FLAGS size");
2952 		memcpy(&flags, data, sizeof flags);
2953 		c->flags |= flags;
2954 		log_debug("client %p IDENTIFY_FLAGS %#x", c, flags);
2955 		break;
2956 	case MSG_IDENTIFY_LONGFLAGS:
2957 		if (datalen != sizeof longflags)
2958 			fatalx("bad MSG_IDENTIFY_LONGFLAGS size");
2959 		memcpy(&longflags, data, sizeof longflags);
2960 		c->flags |= longflags;
2961 		log_debug("client %p IDENTIFY_LONGFLAGS %#llx", c,
2962 		    (unsigned long long)longflags);
2963 		break;
2964 	case MSG_IDENTIFY_TERM:
2965 		if (datalen == 0 || data[datalen - 1] != '\0')
2966 			fatalx("bad MSG_IDENTIFY_TERM string");
2967 		if (*data == '\0')
2968 			c->term_name = xstrdup("unknown");
2969 		else
2970 			c->term_name = xstrdup(data);
2971 		log_debug("client %p IDENTIFY_TERM %s", c, data);
2972 		break;
2973 	case MSG_IDENTIFY_TERMINFO:
2974 		if (datalen == 0 || data[datalen - 1] != '\0')
2975 			fatalx("bad MSG_IDENTIFY_TERMINFO string");
2976 		c->term_caps = xreallocarray(c->term_caps, c->term_ncaps + 1,
2977 		    sizeof *c->term_caps);
2978 		c->term_caps[c->term_ncaps++] = xstrdup(data);
2979 		log_debug("client %p IDENTIFY_TERMINFO %s", c, data);
2980 		break;
2981 	case MSG_IDENTIFY_TTYNAME:
2982 		if (datalen == 0 || data[datalen - 1] != '\0')
2983 			fatalx("bad MSG_IDENTIFY_TTYNAME string");
2984 		c->ttyname = xstrdup(data);
2985 		log_debug("client %p IDENTIFY_TTYNAME %s", c, data);
2986 		break;
2987 	case MSG_IDENTIFY_CWD:
2988 		if (datalen == 0 || data[datalen - 1] != '\0')
2989 			fatalx("bad MSG_IDENTIFY_CWD string");
2990 		if (access(data, X_OK) == 0)
2991 			c->cwd = xstrdup(data);
2992 		else if ((home = find_home()) != NULL)
2993 			c->cwd = xstrdup(home);
2994 		else
2995 			c->cwd = xstrdup("/");
2996 		log_debug("client %p IDENTIFY_CWD %s", c, data);
2997 		break;
2998 	case MSG_IDENTIFY_STDIN:
2999 		if (datalen != 0)
3000 			fatalx("bad MSG_IDENTIFY_STDIN size");
3001 		c->fd = imsg_get_fd(imsg);
3002 		log_debug("client %p IDENTIFY_STDIN %d", c, c->fd);
3003 		break;
3004 	case MSG_IDENTIFY_STDOUT:
3005 		if (datalen != 0)
3006 			fatalx("bad MSG_IDENTIFY_STDOUT size");
3007 		c->out_fd = imsg_get_fd(imsg);
3008 		log_debug("client %p IDENTIFY_STDOUT %d", c, c->out_fd);
3009 		break;
3010 	case MSG_IDENTIFY_ENVIRON:
3011 		if (datalen == 0 || data[datalen - 1] != '\0')
3012 			fatalx("bad MSG_IDENTIFY_ENVIRON string");
3013 		if (strchr(data, '=') != NULL)
3014 			environ_put(c->environ, data, 0);
3015 		log_debug("client %p IDENTIFY_ENVIRON %s", c, data);
3016 		break;
3017 	case MSG_IDENTIFY_CLIENTPID:
3018 		if (datalen != sizeof c->pid)
3019 			fatalx("bad MSG_IDENTIFY_CLIENTPID size");
3020 		memcpy(&c->pid, data, sizeof c->pid);
3021 		log_debug("client %p IDENTIFY_CLIENTPID %ld", c, (long)c->pid);
3022 		break;
3023 	default:
3024 		break;
3025 	}
3026 
3027 	if (imsg->hdr.type != MSG_IDENTIFY_DONE)
3028 		return;
3029 	c->flags |= CLIENT_IDENTIFIED;
3030 
3031 	if (*c->ttyname != '\0')
3032 		name = xstrdup(c->ttyname);
3033 	else
3034 		xasprintf(&name, "client-%ld", (long)c->pid);
3035 	c->name = name;
3036 	log_debug("client %p name is %s", c, c->name);
3037 
3038 #ifdef __CYGWIN__
3039 	c->fd = open(c->ttyname, O_RDWR|O_NOCTTY);
3040 #endif
3041 
3042 	if (c->flags & CLIENT_CONTROL)
3043 		control_start(c);
3044 	else if (c->fd != -1) {
3045 		if (tty_init(&c->tty, c) != 0) {
3046 			close(c->fd);
3047 			c->fd = -1;
3048 		} else {
3049 			tty_resize(&c->tty);
3050 			c->flags |= CLIENT_TERMINAL;
3051 		}
3052 		close(c->out_fd);
3053 		c->out_fd = -1;
3054 	}
3055 
3056 	/*
3057 	 * If this is the first client, load configuration files. Any later
3058 	 * clients are allowed to continue with their command even if the
3059 	 * config has not been loaded - they might have been run from inside it
3060 	 */
3061 	if ((~c->flags & CLIENT_EXIT) &&
3062 	     !cfg_finished &&
3063 	     c == TAILQ_FIRST(&clients))
3064 		start_cfg();
3065 }
3066 
3067 /* Handle shell message. */
3068 static void
3069 server_client_dispatch_shell(struct client *c)
3070 {
3071 	const char	*shell;
3072 
3073 	shell = options_get_string(global_s_options, "default-shell");
3074 	if (!checkshell(shell))
3075 		shell = _PATH_BSHELL;
3076 	proc_send(c->peer, MSG_SHELL, -1, shell, strlen(shell) + 1);
3077 
3078 	proc_kill_peer(c->peer);
3079 }
3080 
3081 /* Get client working directory. */
3082 const char *
3083 server_client_get_cwd(struct client *c, struct session *s)
3084 {
3085 	const char	*home;
3086 
3087 	if (!cfg_finished && cfg_client != NULL)
3088 		return (cfg_client->cwd);
3089 	if (c != NULL && c->session == NULL && c->cwd != NULL)
3090 		return (c->cwd);
3091 	if (s != NULL && s->cwd != NULL)
3092 		return (s->cwd);
3093 	if (c != NULL && (s = c->session) != NULL && s->cwd != NULL)
3094 		return (s->cwd);
3095 	if ((home = find_home()) != NULL)
3096 		return (home);
3097 	return ("/");
3098 }
3099 
3100 /* Get control client flags. */
3101 static uint64_t
3102 server_client_control_flags(struct client *c, const char *next)
3103 {
3104 	if (strcmp(next, "pause-after") == 0) {
3105 		c->pause_age = 0;
3106 		return (CLIENT_CONTROL_PAUSEAFTER);
3107 	}
3108 	if (sscanf(next, "pause-after=%u", &c->pause_age) == 1) {
3109 		c->pause_age *= 1000;
3110 		return (CLIENT_CONTROL_PAUSEAFTER);
3111 	}
3112 	if (strcmp(next, "no-output") == 0)
3113 		return (CLIENT_CONTROL_NOOUTPUT);
3114 	if (strcmp(next, "wait-exit") == 0)
3115 		return (CLIENT_CONTROL_WAITEXIT);
3116 	return (0);
3117 }
3118 
3119 /* Set client flags. */
3120 void
3121 server_client_set_flags(struct client *c, const char *flags)
3122 {
3123 	char	*s, *copy, *next;
3124 	uint64_t flag;
3125 	int	 not;
3126 
3127 	s = copy = xstrdup(flags);
3128 	while ((next = strsep(&s, ",")) != NULL) {
3129 		not = (*next == '!');
3130 		if (not)
3131 			next++;
3132 
3133 		if (c->flags & CLIENT_CONTROL)
3134 			flag = server_client_control_flags(c, next);
3135 		else
3136 			flag = 0;
3137 		if (strcmp(next, "read-only") == 0)
3138 			flag = CLIENT_READONLY;
3139 		else if (strcmp(next, "ignore-size") == 0)
3140 			flag = CLIENT_IGNORESIZE;
3141 		else if (strcmp(next, "active-pane") == 0)
3142 			flag = CLIENT_ACTIVEPANE;
3143 		if (flag == 0)
3144 			continue;
3145 
3146 		log_debug("client %s set flag %s", c->name, next);
3147 		if (not) {
3148 			if (c->flags & CLIENT_READONLY)
3149 				flag &= ~CLIENT_READONLY;
3150 			c->flags &= ~flag;
3151 		} else
3152 			c->flags |= flag;
3153 		if (flag == CLIENT_CONTROL_NOOUTPUT)
3154 			control_reset_offsets(c);
3155 	}
3156 	free(copy);
3157 	proc_send(c->peer, MSG_FLAGS, -1, &c->flags, sizeof c->flags);
3158 }
3159 
3160 /* Get client flags. This is only flags useful to show to users. */
3161 const char *
3162 server_client_get_flags(struct client *c)
3163 {
3164 	static char	s[256];
3165 	char	 	tmp[32];
3166 
3167 	*s = '\0';
3168 	if (c->flags & CLIENT_ATTACHED)
3169 		strlcat(s, "attached,", sizeof s);
3170 	if (c->flags & CLIENT_FOCUSED)
3171 		strlcat(s, "focused,", sizeof s);
3172 	if (c->flags & CLIENT_CONTROL)
3173 		strlcat(s, "control-mode,", sizeof s);
3174 	if (c->flags & CLIENT_IGNORESIZE)
3175 		strlcat(s, "ignore-size,", sizeof s);
3176 	if (c->flags & CLIENT_CONTROL_NOOUTPUT)
3177 		strlcat(s, "no-output,", sizeof s);
3178 	if (c->flags & CLIENT_CONTROL_WAITEXIT)
3179 		strlcat(s, "wait-exit,", sizeof s);
3180 	if (c->flags & CLIENT_CONTROL_PAUSEAFTER) {
3181 		xsnprintf(tmp, sizeof tmp, "pause-after=%u,",
3182 		    c->pause_age / 1000);
3183 		strlcat(s, tmp, sizeof s);
3184 	}
3185 	if (c->flags & CLIENT_READONLY)
3186 		strlcat(s, "read-only,", sizeof s);
3187 	if (c->flags & CLIENT_ACTIVEPANE)
3188 		strlcat(s, "active-pane,", sizeof s);
3189 	if (c->flags & CLIENT_SUSPENDED)
3190 		strlcat(s, "suspended,", sizeof s);
3191 	if (c->flags & CLIENT_UTF8)
3192 		strlcat(s, "UTF-8,", sizeof s);
3193 	if (*s != '\0')
3194 		s[strlen(s) - 1] = '\0';
3195 	return (s);
3196 }
3197 
3198 /* Get client window. */
3199 struct client_window *
3200 server_client_get_client_window(struct client *c, u_int id)
3201 {
3202 	struct client_window	cw = { .window = id };
3203 
3204 	return (RB_FIND(client_windows, &c->windows, &cw));
3205 }
3206 
3207 /* Add client window. */
3208 struct client_window *
3209 server_client_add_client_window(struct client *c, u_int id)
3210 {
3211 	struct client_window	*cw;
3212 
3213 	cw = server_client_get_client_window(c, id);
3214 	if (cw == NULL) {
3215 		cw = xcalloc(1, sizeof *cw);
3216 		cw->window = id;
3217 		RB_INSERT(client_windows, &c->windows, cw);
3218 	}
3219 	return (cw);
3220 }
3221 
3222 /* Get client active pane. */
3223 struct window_pane *
3224 server_client_get_pane(struct client *c)
3225 {
3226 	struct session		*s = c->session;
3227 	struct client_window	*cw;
3228 
3229 	if (s == NULL)
3230 		return (NULL);
3231 
3232 	if (~c->flags & CLIENT_ACTIVEPANE)
3233 		return (s->curw->window->active);
3234 	cw = server_client_get_client_window(c, s->curw->window->id);
3235 	if (cw == NULL)
3236 		return (s->curw->window->active);
3237 	return (cw->pane);
3238 }
3239 
3240 /* Set client active pane. */
3241 void
3242 server_client_set_pane(struct client *c, struct window_pane *wp)
3243 {
3244 	struct session		*s = c->session;
3245 	struct client_window	*cw;
3246 
3247 	if (s == NULL)
3248 		return;
3249 
3250 	cw = server_client_add_client_window(c, s->curw->window->id);
3251 	cw->pane = wp;
3252 	log_debug("%s pane now %%%u", c->name, wp->id);
3253 }
3254 
3255 /* Remove pane from client lists. */
3256 void
3257 server_client_remove_pane(struct window_pane *wp)
3258 {
3259 	struct client		*c;
3260 	struct window		*w = wp->window;
3261 	struct client_window	*cw;
3262 
3263 	TAILQ_FOREACH(c, &clients, entry) {
3264 		cw = server_client_get_client_window(c, w->id);
3265 		if (cw != NULL && cw->pane == wp) {
3266 			RB_REMOVE(client_windows, &c->windows, cw);
3267 			free(cw);
3268 		}
3269 	}
3270 }
3271 
3272 /* Print to a client. */
3273 void
3274 server_client_print(struct client *c, int parse, struct evbuffer *evb)
3275 {
3276 	void				*data = EVBUFFER_DATA(evb);
3277 	size_t				 size = EVBUFFER_LENGTH(evb);
3278 	struct window_pane		*wp;
3279 	struct window_mode_entry	*wme;
3280 	char				*sanitized, *msg, *line;
3281 
3282 	if (!parse) {
3283 		utf8_stravisx(&msg, data, size,
3284 		    VIS_OCTAL|VIS_CSTYLE|VIS_NOSLASH);
3285 		log_debug("%s: %s", __func__, msg);
3286 	} else {
3287 		msg = (char *)EVBUFFER_DATA(evb);
3288 		if (msg[size - 1] != '\0')
3289 			evbuffer_add(evb, "", 1);
3290 	}
3291 
3292 	if (c == NULL)
3293 		goto out;
3294 
3295 	if (c->session == NULL || (c->flags & CLIENT_CONTROL)) {
3296 		if (~c->flags & CLIENT_UTF8) {
3297 			sanitized = utf8_sanitize(msg);
3298 			if (c->flags & CLIENT_CONTROL)
3299 				control_write(c, "%s", sanitized);
3300 			else
3301 				file_print(c, "%s\n", sanitized);
3302 			free(sanitized);
3303 		} else {
3304 			if (c->flags & CLIENT_CONTROL)
3305 				control_write(c, "%s", msg);
3306 			else
3307 				file_print(c, "%s\n", msg);
3308 		}
3309 		goto out;
3310 	}
3311 
3312 	wp = server_client_get_pane(c);
3313 	wme = TAILQ_FIRST(&wp->modes);
3314 	if (wme == NULL || wme->mode != &window_view_mode)
3315 		window_pane_set_mode(wp, NULL, &window_view_mode, NULL, NULL);
3316 	if (parse) {
3317 		do {
3318 			line = evbuffer_readln(evb, NULL, EVBUFFER_EOL_LF);
3319 			if (line != NULL) {
3320 				window_copy_add(wp, 1, "%s", line);
3321 				free(line);
3322 			}
3323 		} while (line != NULL);
3324 
3325 		size = EVBUFFER_LENGTH(evb);
3326 		if (size != 0) {
3327 			line = (char *)EVBUFFER_DATA(evb);
3328 			window_copy_add(wp, 1, "%.*s", (int)size, line);
3329 		}
3330 	} else
3331 		window_copy_add(wp, 0, "%s", msg);
3332 
3333 out:
3334 	if (!parse)
3335 		free(msg);
3336 }
3337