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Add a NOBLOCK flag rather than adding amount to wait for when
[tmux-openbsd.git] / server-client.c
blob072c55892fad81caa5e904b802c3721f9cd579b2
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 <event.h>
25 #include <fcntl.h>
26 #include <imsg.h>
27 #include <paths.h>
28 #include <stdlib.h>
29 #include <string.h>
30 #include <time.h>
31 #include <unistd.h>
32
33 #include "tmux.h"
34
35 static void server_client_free(int, short, void *);
36 static void server_client_check_pane_resize(struct window_pane *);
37 static void server_client_check_pane_buffer(struct window_pane *);
38 static void server_client_check_window_resize(struct window *);
39 static key_code server_client_check_mouse(struct client *, struct key_event *);
40 static void server_client_repeat_timer(int, short, void *);
41 static void server_client_click_timer(int, short, void *);
42 static void server_client_check_exit(struct client *);
43 static void server_client_check_redraw(struct client *);
44 static void server_client_check_modes(struct client *);
45 static void server_client_set_title(struct client *);
46 static void server_client_reset_state(struct client *);
47 static int server_client_assume_paste(struct session *);
48 static void server_client_update_latest(struct client *);
49
50 static void server_client_dispatch(struct imsg *, void *);
51 static void server_client_dispatch_command(struct client *, struct imsg *);
52 static void server_client_dispatch_identify(struct client *, struct imsg *);
53 static void server_client_dispatch_shell(struct client *);
54
55 /* Compare client windows. */
56 static int
57 server_client_window_cmp(struct client_window *cw1,
58 struct client_window *cw2)
59 {
60 if (cw1->window < cw2->window)
61 return (-1);
62 if (cw1->window > cw2->window)
63 return (1);
64 return (0);
65 }
66 RB_GENERATE(client_windows, client_window, entry, server_client_window_cmp);
67
68 /* Number of attached clients. */
69 u_int
70 server_client_how_many(void)
71 {
72 struct client *c;
73 u_int n;
74
75 n = 0;
76 TAILQ_FOREACH(c, &clients, entry) {
77 if (c->session != NULL && (~c->flags & CLIENT_UNATTACHEDFLAGS))
78 n++;
79 }
80 return (n);
81 }
82
83 /* Overlay timer callback. */
84 static void
85 server_client_overlay_timer(__unused int fd, __unused short events, void *data)
86 {
87 server_client_clear_overlay(data);
88 }
89
90 /* Set an overlay on client. */
91 void
92 server_client_set_overlay(struct client *c, u_int delay,
93 overlay_check_cb checkcb, overlay_mode_cb modecb,
94 overlay_draw_cb drawcb, overlay_key_cb keycb, overlay_free_cb freecb,
95 overlay_resize_cb resizecb, void *data)
96 {
97 struct timeval tv;
98
99 if (c->overlay_draw != NULL)
100 server_client_clear_overlay(c);
101
102 tv.tv_sec = delay / 1000;
103 tv.tv_usec = (delay % 1000) * 1000L;
104
105 if (event_initialized(&c->overlay_timer))
106 evtimer_del(&c->overlay_timer);
107 evtimer_set(&c->overlay_timer, server_client_overlay_timer, c);
108 if (delay != 0)
109 evtimer_add(&c->overlay_timer, &tv);
110
111 c->overlay_check = checkcb;
112 c->overlay_mode = modecb;
113 c->overlay_draw = drawcb;
114 c->overlay_key = keycb;
115 c->overlay_free = freecb;
116 c->overlay_resize = resizecb;
117 c->overlay_data = data;
118
119 if (c->overlay_check == NULL)
120 c->tty.flags |= TTY_FREEZE;
121 if (c->overlay_mode == NULL)
122 c->tty.flags |= TTY_NOCURSOR;
123 server_redraw_client(c);
124 }
125
126 /* Clear overlay mode on client. */
127 void
128 server_client_clear_overlay(struct client *c)
129 {
130 if (c->overlay_draw == NULL)
131 return;
132
133 if (event_initialized(&c->overlay_timer))
134 evtimer_del(&c->overlay_timer);
135
136 if (c->overlay_free != NULL)
137 c->overlay_free(c, c->overlay_data);
138
139 c->overlay_check = NULL;
140 c->overlay_mode = NULL;
141 c->overlay_draw = NULL;
142 c->overlay_key = NULL;
143 c->overlay_free = NULL;
144 c->overlay_data = NULL;
145
146 c->tty.flags &= ~(TTY_FREEZE|TTY_NOCURSOR);
147 server_redraw_client(c);
148 }
149
150 /*
151 * Given overlay position and dimensions, return parts of the input range which
152 * are visible.
153 */
154 void
155 server_client_overlay_range(u_int x, u_int y, u_int sx, u_int sy, u_int px,
156 u_int py, u_int nx, struct overlay_ranges *r)
157 {
158 u_int ox, onx;
159
160 /* Return up to 2 ranges. */
161 r->px[2] = 0;
162 r->nx[2] = 0;
163
164 /* Trivial case of no overlap in the y direction. */
165 if (py < y || py > y + sy - 1) {
166 r->px[0] = px;
167 r->nx[0] = nx;
168 r->px[1] = 0;
169 r->nx[1] = 0;
170 return;
171 }
172
173 /* Visible bit to the left of the popup. */
174 if (px < x) {
175 r->px[0] = px;
176 r->nx[0] = x - px;
177 if (r->nx[0] > nx)
178 r->nx[0] = nx;
179 } else {
180 r->px[0] = 0;
181 r->nx[0] = 0;
182 }
183
184 /* Visible bit to the right of the popup. */
185 ox = x + sx;
186 if (px > ox)
187 ox = px;
188 onx = px + nx;
189 if (onx > ox) {
190 r->px[1] = ox;
191 r->nx[1] = onx - ox;
192 } else {
193 r->px[1] = 0;
194 r->nx[1] = 0;
195 }
196 }
197
198 /* Check if this client is inside this server. */
199 int
200 server_client_check_nested(struct client *c)
201 {
202 struct environ_entry *envent;
203 struct window_pane *wp;
204
205 envent = environ_find(c->environ, "TMUX");
206 if (envent == NULL || *envent->value == '\0')
207 return (0);
208
209 RB_FOREACH(wp, window_pane_tree, &all_window_panes) {
210 if (strcmp(wp->tty, c->ttyname) == 0)
211 return (1);
212 }
213 return (0);
214 }
215
216 /* Set client key table. */
217 void
218 server_client_set_key_table(struct client *c, const char *name)
219 {
220 if (name == NULL)
221 name = server_client_get_key_table(c);
222
223 key_bindings_unref_table(c->keytable);
224 c->keytable = key_bindings_get_table(name, 1);
225 c->keytable->references++;
226 }
227
228 /* Get default key table. */
229 const char *
230 server_client_get_key_table(struct client *c)
231 {
232 struct session *s = c->session;
233 const char *name;
234
235 if (s == NULL)
236 return ("root");
237
238 name = options_get_string(s->options, "key-table");
239 if (*name == '\0')
240 return ("root");
241 return (name);
242 }
243
244 /* Is this table the default key table? */
245 static int
246 server_client_is_default_key_table(struct client *c, struct key_table *table)
247 {
248 return (strcmp(table->name, server_client_get_key_table(c)) == 0);
249 }
250
251 /* Create a new client. */
252 struct client *
253 server_client_create(int fd)
254 {
255 struct client *c;
256
257 setblocking(fd, 0);
258
259 c = xcalloc(1, sizeof *c);
260 c->references = 1;
261 c->peer = proc_add_peer(server_proc, fd, server_client_dispatch, c);
262
263 if (gettimeofday(&c->creation_time, NULL) != 0)
264 fatal("gettimeofday failed");
265 memcpy(&c->activity_time, &c->creation_time, sizeof c->activity_time);
266
267 c->environ = environ_create();
268
269 c->fd = -1;
270 c->out_fd = -1;
271
272 c->queue = cmdq_new();
273 RB_INIT(&c->windows);
274 RB_INIT(&c->files);
275
276 c->tty.sx = 80;
277 c->tty.sy = 24;
278
279 status_init(c);
280 c->flags |= CLIENT_FOCUSED;
281
282 c->keytable = key_bindings_get_table("root", 1);
283 c->keytable->references++;
284
285 evtimer_set(&c->repeat_timer, server_client_repeat_timer, c);
286 evtimer_set(&c->click_timer, server_client_click_timer, c);
287
288 TAILQ_INSERT_TAIL(&clients, c, entry);
289 log_debug("new client %p", c);
290 return (c);
291 }
292
293 /* Open client terminal if needed. */
294 int
295 server_client_open(struct client *c, char **cause)
296 {
297 const char *ttynam = _PATH_TTY;
298
299 if (c->flags & CLIENT_CONTROL)
300 return (0);
301
302 if (strcmp(c->ttyname, ttynam) == 0||
303 ((isatty(STDIN_FILENO) &&
304 (ttynam = ttyname(STDIN_FILENO)) != NULL &&
305 strcmp(c->ttyname, ttynam) == 0) ||
306 (isatty(STDOUT_FILENO) &&
307 (ttynam = ttyname(STDOUT_FILENO)) != NULL &&
308 strcmp(c->ttyname, ttynam) == 0) ||
309 (isatty(STDERR_FILENO) &&
310 (ttynam = ttyname(STDERR_FILENO)) != NULL &&
311 strcmp(c->ttyname, ttynam) == 0))) {
312 xasprintf(cause, "can't use %s", c->ttyname);
313 return (-1);
314 }
315
316 if (!(c->flags & CLIENT_TERMINAL)) {
317 *cause = xstrdup("not a terminal");
318 return (-1);
319 }
320
321 if (tty_open(&c->tty, cause) != 0)
322 return (-1);
323
324 return (0);
325 }
326
327 /* Lost an attached client. */
328 static void
329 server_client_attached_lost(struct client *c)
330 {
331 struct session *s;
332 struct window *w;
333 struct client *loop;
334 struct client *found;
335
336 log_debug("lost attached client %p", c);
337
338 /*
339 * By this point the session in the client has been cleared so walk all
340 * windows to find any with this client as the latest.
341 */
342 RB_FOREACH(w, windows, &windows) {
343 if (w->latest != c)
344 continue;
345
346 found = NULL;
347 TAILQ_FOREACH(loop, &clients, entry) {
348 s = loop->session;
349 if (loop == c || s == NULL || s->curw->window != w)
350 continue;
351 if (found == NULL || timercmp(&loop->activity_time,
352 &found->activity_time, >))
353 found = loop;
354 }
355 if (found != NULL)
356 server_client_update_latest(found);
357 }
358 }
359
360 /* Set client session. */
361 void
362 server_client_set_session(struct client *c, struct session *s)
363 {
364 struct session *old = c->session;
365
366 if (s != NULL && c->session != NULL && c->session != s)
367 c->last_session = c->session;
368 else if (s == NULL)
369 c->last_session = NULL;
370 c->session = s;
371 c->flags |= CLIENT_FOCUSED;
372
373 if (old != NULL && old->curw != NULL)
374 window_update_focus(old->curw->window);
375 if (s != NULL) {
376 recalculate_sizes();
377 window_update_focus(s->curw->window);
378 session_update_activity(s, NULL);
379 gettimeofday(&s->last_attached_time, NULL);
380 s->curw->flags &= ~WINLINK_ALERTFLAGS;
381 s->curw->window->latest = c;
382 alerts_check_session(s);
383 tty_update_client_offset(c);
384 status_timer_start(c);
385 notify_client("client-session-changed", c);
386 server_redraw_client(c);
387 }
388
389 server_check_unattached();
390 server_update_socket();
391 }
392
393 /* Lost a client. */
394 void
395 server_client_lost(struct client *c)
396 {
397 struct client_file *cf, *cf1;
398 struct client_window *cw, *cw1;
399
400 c->flags |= CLIENT_DEAD;
401
402 server_client_clear_overlay(c);
403 status_prompt_clear(c);
404 status_message_clear(c);
405
406 RB_FOREACH_SAFE(cf, client_files, &c->files, cf1) {
407 cf->error = EINTR;
408 file_fire_done(cf);
409 }
410 RB_FOREACH_SAFE(cw, client_windows, &c->windows, cw1) {
411 RB_REMOVE(client_windows, &c->windows, cw);
412 free(cw);
413 }
414
415 TAILQ_REMOVE(&clients, c, entry);
416 log_debug("lost client %p", c);
417
418 if (c->flags & CLIENT_ATTACHED) {
419 server_client_attached_lost(c);
420 notify_client("client-detached", c);
421 }
422
423 if (c->flags & CLIENT_CONTROL)
424 control_stop(c);
425 if (c->flags & CLIENT_TERMINAL)
426 tty_free(&c->tty);
427 free(c->ttyname);
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((void *)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((void *)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;
564 struct winlink *wl;
565 struct window_pane *wp;
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_BUTTONS(m->sgr_b) == 3) ||
600 (m->sgr_type == ' ' &&
601 MOUSE_DRAG(m->b) &&
602 MOUSE_BUTTONS(m->b) == 3 &&
603 MOUSE_BUTTONS(m->lb) == 3)) {
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->ignore = ignore;
672
673 /* Is this on the status line? */
674 m->statusat = status_at_line(c);
675 m->statuslines = status_line_size(c);
676 if (m->statusat != -1 &&
677 y >= (u_int)m->statusat &&
678 y < m->statusat + m->statuslines) {
679 sr = status_get_range(c, x, y - m->statusat);
680 if (sr == NULL) {
681 where = STATUS_DEFAULT;
682 } else {
683 switch (sr->type) {
684 case STYLE_RANGE_NONE:
685 return (KEYC_UNKNOWN);
686 case STYLE_RANGE_LEFT:
687 where = STATUS_LEFT;
688 break;
689 case STYLE_RANGE_RIGHT:
690 where = STATUS_RIGHT;
691 break;
692 case STYLE_RANGE_WINDOW:
693 wl = winlink_find_by_index(&s->windows,
694 sr->argument);
695 if (wl == NULL)
696 return (KEYC_UNKNOWN);
697 m->w = wl->window->id;
698
699 where = STATUS;
700 break;
701 }
702 }
703 }
704
705 /* Not on status line. Adjust position and check for border or pane. */
706 if (where == NOWHERE) {
707 px = x;
708 if (m->statusat == 0 && y >= m->statuslines)
709 py = y - m->statuslines;
710 else if (m->statusat > 0 && y >= (u_int)m->statusat)
711 py = m->statusat - 1;
712 else
713 py = y;
714
715 tty_window_offset(&c->tty, &m->ox, &m->oy, &sx, &sy);
716 log_debug("mouse window @%u at %u,%u (%ux%u)",
717 s->curw->window->id, m->ox, m->oy, sx, sy);
718 if (px > sx || py > sy)
719 return (KEYC_UNKNOWN);
720 px = px + m->ox;
721 py = py + m->oy;
722
723 /* Try the pane borders if not zoomed. */
724 if (~s->curw->window->flags & WINDOW_ZOOMED) {
725 TAILQ_FOREACH(wp, &s->curw->window->panes, entry) {
726 if ((wp->xoff + wp->sx == px &&
727 wp->yoff <= 1 + py &&
728 wp->yoff + wp->sy >= py) ||
729 (wp->yoff + wp->sy == py &&
730 wp->xoff <= 1 + px &&
731 wp->xoff + wp->sx >= px))
732 break;
733 }
734 if (wp != NULL)
735 where = BORDER;
736 }
737
738 /* Otherwise try inside the pane. */
739 if (where == NOWHERE) {
740 wp = window_get_active_at(s->curw->window, px, py);
741 if (wp != NULL)
742 where = PANE;
743 else
744 return (KEYC_UNKNOWN);
745 }
746 if (where == PANE)
747 log_debug("mouse %u,%u on pane %%%u", x, y, wp->id);
748 else if (where == BORDER)
749 log_debug("mouse on pane %%%u border", wp->id);
750 m->wp = wp->id;
751 m->w = wp->window->id;
752 } else
753 m->wp = -1;
754
755 /* Stop dragging if needed. */
756 if (type != DRAG && type != WHEEL && c->tty.mouse_drag_flag) {
757 if (c->tty.mouse_drag_release != NULL)
758 c->tty.mouse_drag_release(c, m);
759
760 c->tty.mouse_drag_update = NULL;
761 c->tty.mouse_drag_release = NULL;
762
763 /*
764 * End a mouse drag by passing a MouseDragEnd key corresponding
765 * to the button that started the drag.
766 */
767 switch (c->tty.mouse_drag_flag) {
768 case 1:
769 if (where == PANE)
770 key = KEYC_MOUSEDRAGEND1_PANE;
771 if (where == STATUS)
772 key = KEYC_MOUSEDRAGEND1_STATUS;
773 if (where == STATUS_LEFT)
774 key = KEYC_MOUSEDRAGEND1_STATUS_LEFT;
775 if (where == STATUS_RIGHT)
776 key = KEYC_MOUSEDRAGEND1_STATUS_RIGHT;
777 if (where == STATUS_DEFAULT)
778 key = KEYC_MOUSEDRAGEND1_STATUS_DEFAULT;
779 if (where == BORDER)
780 key = KEYC_MOUSEDRAGEND1_BORDER;
781 break;
782 case 2:
783 if (where == PANE)
784 key = KEYC_MOUSEDRAGEND2_PANE;
785 if (where == STATUS)
786 key = KEYC_MOUSEDRAGEND2_STATUS;
787 if (where == STATUS_LEFT)
788 key = KEYC_MOUSEDRAGEND2_STATUS_LEFT;
789 if (where == STATUS_RIGHT)
790 key = KEYC_MOUSEDRAGEND2_STATUS_RIGHT;
791 if (where == STATUS_DEFAULT)
792 key = KEYC_MOUSEDRAGEND2_STATUS_DEFAULT;
793 if (where == BORDER)
794 key = KEYC_MOUSEDRAGEND2_BORDER;
795 break;
796 case 3:
797 if (where == PANE)
798 key = KEYC_MOUSEDRAGEND3_PANE;
799 if (where == STATUS)
800 key = KEYC_MOUSEDRAGEND3_STATUS;
801 if (where == STATUS_LEFT)
802 key = KEYC_MOUSEDRAGEND3_STATUS_LEFT;
803 if (where == STATUS_RIGHT)
804 key = KEYC_MOUSEDRAGEND3_STATUS_RIGHT;
805 if (where == STATUS_DEFAULT)
806 key = KEYC_MOUSEDRAGEND3_STATUS_DEFAULT;
807 if (where == BORDER)
808 key = KEYC_MOUSEDRAGEND3_BORDER;
809 break;
810 default:
811 key = KEYC_MOUSE;
812 break;
813 }
814 c->tty.mouse_drag_flag = 0;
815 goto out;
816 }
817
818 /* Convert to a key binding. */
819 key = KEYC_UNKNOWN;
820 switch (type) {
821 case NOTYPE:
822 break;
823 case MOVE:
824 if (where == PANE)
825 key = KEYC_MOUSEMOVE_PANE;
826 if (where == STATUS)
827 key = KEYC_MOUSEMOVE_STATUS;
828 if (where == STATUS_LEFT)
829 key = KEYC_MOUSEMOVE_STATUS_LEFT;
830 if (where == STATUS_RIGHT)
831 key = KEYC_MOUSEMOVE_STATUS_RIGHT;
832 if (where == STATUS_DEFAULT)
833 key = KEYC_MOUSEMOVE_STATUS_DEFAULT;
834 if (where == BORDER)
835 key = KEYC_MOUSEMOVE_BORDER;
836 break;
837 case DRAG:
838 if (c->tty.mouse_drag_update != NULL)
839 key = KEYC_DRAGGING;
840 else {
841 switch (MOUSE_BUTTONS(b)) {
842 case 0:
843 if (where == PANE)
844 key = KEYC_MOUSEDRAG1_PANE;
845 if (where == STATUS)
846 key = KEYC_MOUSEDRAG1_STATUS;
847 if (where == STATUS_LEFT)
848 key = KEYC_MOUSEDRAG1_STATUS_LEFT;
849 if (where == STATUS_RIGHT)
850 key = KEYC_MOUSEDRAG1_STATUS_RIGHT;
851 if (where == STATUS_DEFAULT)
852 key = KEYC_MOUSEDRAG1_STATUS_DEFAULT;
853 if (where == BORDER)
854 key = KEYC_MOUSEDRAG1_BORDER;
855 break;
856 case 1:
857 if (where == PANE)
858 key = KEYC_MOUSEDRAG2_PANE;
859 if (where == STATUS)
860 key = KEYC_MOUSEDRAG2_STATUS;
861 if (where == STATUS_LEFT)
862 key = KEYC_MOUSEDRAG2_STATUS_LEFT;
863 if (where == STATUS_RIGHT)
864 key = KEYC_MOUSEDRAG2_STATUS_RIGHT;
865 if (where == STATUS_DEFAULT)
866 key = KEYC_MOUSEDRAG2_STATUS_DEFAULT;
867 if (where == BORDER)
868 key = KEYC_MOUSEDRAG2_BORDER;
869 break;
870 case 2:
871 if (where == PANE)
872 key = KEYC_MOUSEDRAG3_PANE;
873 if (where == STATUS)
874 key = KEYC_MOUSEDRAG3_STATUS;
875 if (where == STATUS_LEFT)
876 key = KEYC_MOUSEDRAG3_STATUS_LEFT;
877 if (where == STATUS_RIGHT)
878 key = KEYC_MOUSEDRAG3_STATUS_RIGHT;
879 if (where == STATUS_DEFAULT)
880 key = KEYC_MOUSEDRAG3_STATUS_DEFAULT;
881 if (where == BORDER)
882 key = KEYC_MOUSEDRAG3_BORDER;
883 break;
884 }
885 }
886
887 /*
888 * Begin a drag by setting the flag to a non-zero value that
889 * corresponds to the mouse button in use.
890 */
891 c->tty.mouse_drag_flag = MOUSE_BUTTONS(b) + 1;
892 break;
893 case WHEEL:
894 if (MOUSE_BUTTONS(b) == MOUSE_WHEEL_UP) {
895 if (where == PANE)
896 key = KEYC_WHEELUP_PANE;
897 if (where == STATUS)
898 key = KEYC_WHEELUP_STATUS;
899 if (where == STATUS_LEFT)
900 key = KEYC_WHEELUP_STATUS_LEFT;
901 if (where == STATUS_RIGHT)
902 key = KEYC_WHEELUP_STATUS_RIGHT;
903 if (where == STATUS_DEFAULT)
904 key = KEYC_WHEELUP_STATUS_DEFAULT;
905 if (where == BORDER)
906 key = KEYC_WHEELUP_BORDER;
907 } else {
908 if (where == PANE)
909 key = KEYC_WHEELDOWN_PANE;
910 if (where == STATUS)
911 key = KEYC_WHEELDOWN_STATUS;
912 if (where == STATUS_LEFT)
913 key = KEYC_WHEELDOWN_STATUS_LEFT;
914 if (where == STATUS_RIGHT)
915 key = KEYC_WHEELDOWN_STATUS_RIGHT;
916 if (where == STATUS_DEFAULT)
917 key = KEYC_WHEELDOWN_STATUS_DEFAULT;
918 if (where == BORDER)
919 key = KEYC_WHEELDOWN_BORDER;
920 }
921 break;
922 case UP:
923 switch (MOUSE_BUTTONS(b)) {
924 case 0:
925 if (where == PANE)
926 key = KEYC_MOUSEUP1_PANE;
927 if (where == STATUS)
928 key = KEYC_MOUSEUP1_STATUS;
929 if (where == STATUS_LEFT)
930 key = KEYC_MOUSEUP1_STATUS_LEFT;
931 if (where == STATUS_RIGHT)
932 key = KEYC_MOUSEUP1_STATUS_RIGHT;
933 if (where == STATUS_DEFAULT)
934 key = KEYC_MOUSEUP1_STATUS_DEFAULT;
935 if (where == BORDER)
936 key = KEYC_MOUSEUP1_BORDER;
937 break;
938 case 1:
939 if (where == PANE)
940 key = KEYC_MOUSEUP2_PANE;
941 if (where == STATUS)
942 key = KEYC_MOUSEUP2_STATUS;
943 if (where == STATUS_LEFT)
944 key = KEYC_MOUSEUP2_STATUS_LEFT;
945 if (where == STATUS_RIGHT)
946 key = KEYC_MOUSEUP2_STATUS_RIGHT;
947 if (where == STATUS_DEFAULT)
948 key = KEYC_MOUSEUP2_STATUS_DEFAULT;
949 if (where == BORDER)
950 key = KEYC_MOUSEUP2_BORDER;
951 break;
952 case 2:
953 if (where == PANE)
954 key = KEYC_MOUSEUP3_PANE;
955 if (where == STATUS)
956 key = KEYC_MOUSEUP3_STATUS;
957 if (where == STATUS_LEFT)
958 key = KEYC_MOUSEUP3_STATUS_LEFT;
959 if (where == STATUS_RIGHT)
960 key = KEYC_MOUSEUP3_STATUS_RIGHT;
961 if (where == STATUS_DEFAULT)
962 key = KEYC_MOUSEUP3_STATUS_DEFAULT;
963 if (where == BORDER)
964 key = KEYC_MOUSEUP3_BORDER;
965 break;
966 }
967 break;
968 case DOWN:
969 switch (MOUSE_BUTTONS(b)) {
970 case 0:
971 if (where == PANE)
972 key = KEYC_MOUSEDOWN1_PANE;
973 if (where == STATUS)
974 key = KEYC_MOUSEDOWN1_STATUS;
975 if (where == STATUS_LEFT)
976 key = KEYC_MOUSEDOWN1_STATUS_LEFT;
977 if (where == STATUS_RIGHT)
978 key = KEYC_MOUSEDOWN1_STATUS_RIGHT;
979 if (where == STATUS_DEFAULT)
980 key = KEYC_MOUSEDOWN1_STATUS_DEFAULT;
981 if (where == BORDER)
982 key = KEYC_MOUSEDOWN1_BORDER;
983 break;
984 case 1:
985 if (where == PANE)
986 key = KEYC_MOUSEDOWN2_PANE;
987 if (where == STATUS)
988 key = KEYC_MOUSEDOWN2_STATUS;
989 if (where == STATUS_LEFT)
990 key = KEYC_MOUSEDOWN2_STATUS_LEFT;
991 if (where == STATUS_RIGHT)
992 key = KEYC_MOUSEDOWN2_STATUS_RIGHT;
993 if (where == STATUS_DEFAULT)
994 key = KEYC_MOUSEDOWN2_STATUS_DEFAULT;
995 if (where == BORDER)
996 key = KEYC_MOUSEDOWN2_BORDER;
997 break;
998 case 2:
999 if (where == PANE)
1000 key = KEYC_MOUSEDOWN3_PANE;
1001 if (where == STATUS)
1002 key = KEYC_MOUSEDOWN3_STATUS;
1003 if (where == STATUS_LEFT)
1004 key = KEYC_MOUSEDOWN3_STATUS_LEFT;
1005 if (where == STATUS_RIGHT)
1006 key = KEYC_MOUSEDOWN3_STATUS_RIGHT;
1007 if (where == STATUS_DEFAULT)
1008 key = KEYC_MOUSEDOWN3_STATUS_DEFAULT;
1009 if (where == BORDER)
1010 key = KEYC_MOUSEDOWN3_BORDER;
1011 break;
1012 }
1013 break;
1014 case SECOND:
1015 switch (MOUSE_BUTTONS(b)) {
1016 case 0:
1017 if (where == PANE)
1018 key = KEYC_SECONDCLICK1_PANE;
1019 if (where == STATUS)
1020 key = KEYC_SECONDCLICK1_STATUS;
1021 if (where == STATUS_LEFT)
1022 key = KEYC_SECONDCLICK1_STATUS_LEFT;
1023 if (where == STATUS_RIGHT)
1024 key = KEYC_SECONDCLICK1_STATUS_RIGHT;
1025 if (where == STATUS_DEFAULT)
1026 key = KEYC_SECONDCLICK1_STATUS_DEFAULT;
1027 if (where == BORDER)
1028 key = KEYC_SECONDCLICK1_BORDER;
1029 break;
1030 case 1:
1031 if (where == PANE)
1032 key = KEYC_SECONDCLICK2_PANE;
1033 if (where == STATUS)
1034 key = KEYC_SECONDCLICK2_STATUS;
1035 if (where == STATUS_LEFT)
1036 key = KEYC_SECONDCLICK2_STATUS_LEFT;
1037 if (where == STATUS_RIGHT)
1038 key = KEYC_SECONDCLICK2_STATUS_RIGHT;
1039 if (where == STATUS_DEFAULT)
1040 key = KEYC_SECONDCLICK2_STATUS_DEFAULT;
1041 if (where == BORDER)
1042 key = KEYC_SECONDCLICK2_BORDER;
1043 break;
1044 case 2:
1045 if (where == PANE)
1046 key = KEYC_SECONDCLICK3_PANE;
1047 if (where == STATUS)
1048 key = KEYC_SECONDCLICK3_STATUS;
1049 if (where == STATUS_LEFT)
1050 key = KEYC_SECONDCLICK3_STATUS_LEFT;
1051 if (where == STATUS_RIGHT)
1052 key = KEYC_SECONDCLICK3_STATUS_RIGHT;
1053 if (where == STATUS_DEFAULT)
1054 key = KEYC_SECONDCLICK3_STATUS_DEFAULT;
1055 if (where == BORDER)
1056 key = KEYC_SECONDCLICK3_BORDER;
1057 break;
1058 }
1059 break;
1060 case DOUBLE:
1061 switch (MOUSE_BUTTONS(b)) {
1062 case 0:
1063 if (where == PANE)
1064 key = KEYC_DOUBLECLICK1_PANE;
1065 if (where == STATUS)
1066 key = KEYC_DOUBLECLICK1_STATUS;
1067 if (where == STATUS_LEFT)
1068 key = KEYC_DOUBLECLICK1_STATUS_LEFT;
1069 if (where == STATUS_RIGHT)
1070 key = KEYC_DOUBLECLICK1_STATUS_RIGHT;
1071 if (where == STATUS_DEFAULT)
1072 key = KEYC_DOUBLECLICK1_STATUS_DEFAULT;
1073 if (where == BORDER)
1074 key = KEYC_DOUBLECLICK1_BORDER;
1075 break;
1076 case 1:
1077 if (where == PANE)
1078 key = KEYC_DOUBLECLICK2_PANE;
1079 if (where == STATUS)
1080 key = KEYC_DOUBLECLICK2_STATUS;
1081 if (where == STATUS_LEFT)
1082 key = KEYC_DOUBLECLICK2_STATUS_LEFT;
1083 if (where == STATUS_RIGHT)
1084 key = KEYC_DOUBLECLICK2_STATUS_RIGHT;
1085 if (where == STATUS_DEFAULT)
1086 key = KEYC_DOUBLECLICK2_STATUS_DEFAULT;
1087 if (where == BORDER)
1088 key = KEYC_DOUBLECLICK2_BORDER;
1089 break;
1090 case 2:
1091 if (where == PANE)
1092 key = KEYC_DOUBLECLICK3_PANE;
1093 if (where == STATUS)
1094 key = KEYC_DOUBLECLICK3_STATUS;
1095 if (where == STATUS_LEFT)
1096 key = KEYC_DOUBLECLICK3_STATUS_LEFT;
1097 if (where == STATUS_RIGHT)
1098 key = KEYC_DOUBLECLICK3_STATUS_RIGHT;
1099 if (where == STATUS_DEFAULT)
1100 key = KEYC_DOUBLECLICK3_STATUS_DEFAULT;
1101 if (where == BORDER)
1102 key = KEYC_DOUBLECLICK3_BORDER;
1103 break;
1104 }
1105 break;
1106 case TRIPLE:
1107 switch (MOUSE_BUTTONS(b)) {
1108 case 0:
1109 if (where == PANE)
1110 key = KEYC_TRIPLECLICK1_PANE;
1111 if (where == STATUS)
1112 key = KEYC_TRIPLECLICK1_STATUS;
1113 if (where == STATUS_LEFT)
1114 key = KEYC_TRIPLECLICK1_STATUS_LEFT;
1115 if (where == STATUS_RIGHT)
1116 key = KEYC_TRIPLECLICK1_STATUS_RIGHT;
1117 if (where == STATUS_DEFAULT)
1118 key = KEYC_TRIPLECLICK1_STATUS_DEFAULT;
1119 if (where == BORDER)
1120 key = KEYC_TRIPLECLICK1_BORDER;
1121 break;
1122 case 1:
1123 if (where == PANE)
1124 key = KEYC_TRIPLECLICK2_PANE;
1125 if (where == STATUS)
1126 key = KEYC_TRIPLECLICK2_STATUS;
1127 if (where == STATUS_LEFT)
1128 key = KEYC_TRIPLECLICK2_STATUS_LEFT;
1129 if (where == STATUS_RIGHT)
1130 key = KEYC_TRIPLECLICK2_STATUS_RIGHT;
1131 if (where == STATUS_DEFAULT)
1132 key = KEYC_TRIPLECLICK2_STATUS_DEFAULT;
1133 if (where == BORDER)
1134 key = KEYC_TRIPLECLICK2_BORDER;
1135 break;
1136 case 2:
1137 if (where == PANE)
1138 key = KEYC_TRIPLECLICK3_PANE;
1139 if (where == STATUS)
1140 key = KEYC_TRIPLECLICK3_STATUS;
1141 if (where == STATUS_LEFT)
1142 key = KEYC_TRIPLECLICK3_STATUS_LEFT;
1143 if (where == STATUS_RIGHT)
1144 key = KEYC_TRIPLECLICK3_STATUS_RIGHT;
1145 if (where == STATUS_DEFAULT)
1146 key = KEYC_TRIPLECLICK3_STATUS_DEFAULT;
1147 if (where == BORDER)
1148 key = KEYC_TRIPLECLICK3_BORDER;
1149 break;
1150 }
1151 break;
1152 }
1153 if (key == KEYC_UNKNOWN)
1154 return (KEYC_UNKNOWN);
1155
1156 out:
1157 /* Apply modifiers if any. */
1158 if (b & MOUSE_MASK_META)
1159 key |= KEYC_META;
1160 if (b & MOUSE_MASK_CTRL)
1161 key |= KEYC_CTRL;
1162 if (b & MOUSE_MASK_SHIFT)
1163 key |= KEYC_SHIFT;
1164
1165 if (log_get_level() != 0)
1166 log_debug("mouse key is %s", key_string_lookup_key (key, 1));
1167 return (key);
1168 }
1169
1170 /* Is this fast enough to probably be a paste? */
1171 static int
1172 server_client_assume_paste(struct session *s)
1173 {
1174 struct timeval tv;
1175 int t;
1176
1177 if ((t = options_get_number(s->options, "assume-paste-time")) == 0)
1178 return (0);
1179
1180 timersub(&s->activity_time, &s->last_activity_time, &tv);
1181 if (tv.tv_sec == 0 && tv.tv_usec < t * 1000) {
1182 log_debug("session %s pasting (flag %d)", s->name,
1183 !!(s->flags & SESSION_PASTING));
1184 if (s->flags & SESSION_PASTING)
1185 return (1);
1186 s->flags |= SESSION_PASTING;
1187 return (0);
1188 }
1189 log_debug("session %s not pasting", s->name);
1190 s->flags &= ~SESSION_PASTING;
1191 return (0);
1192 }
1193
1194 /* Has the latest client changed? */
1195 static void
1196 server_client_update_latest(struct client *c)
1197 {
1198 struct window *w;
1199
1200 if (c->session == NULL)
1201 return;
1202 w = c->session->curw->window;
1203
1204 if (w->latest == c)
1205 return;
1206 w->latest = c;
1207
1208 if (options_get_number(w->options, "window-size") == WINDOW_SIZE_LATEST)
1209 recalculate_size(w, 0);
1210
1211 notify_client("client-active", c);
1212 }
1213
1214 /*
1215 * Handle data key input from client. This owns and can modify the key event it
1216 * is given and is responsible for freeing it.
1217 */
1218 static enum cmd_retval
1219 server_client_key_callback(struct cmdq_item *item, void *data)
1220 {
1221 struct client *c = cmdq_get_client(item);
1222 struct key_event *event = data;
1223 key_code key = event->key;
1224 struct mouse_event *m = &event->m;
1225 struct session *s = c->session;
1226 struct winlink *wl;
1227 struct window_pane *wp;
1228 struct window_mode_entry *wme;
1229 struct timeval tv;
1230 struct key_table *table, *first;
1231 struct key_binding *bd;
1232 int xtimeout, flags;
1233 struct cmd_find_state fs;
1234 key_code key0;
1235
1236 /* Check the client is good to accept input. */
1237 if (s == NULL || (c->flags & CLIENT_UNATTACHEDFLAGS))
1238 goto out;
1239 wl = s->curw;
1240
1241 /* Update the activity timer. */
1242 if (gettimeofday(&c->activity_time, NULL) != 0)
1243 fatal("gettimeofday failed");
1244 session_update_activity(s, &c->activity_time);
1245
1246 /* Check for mouse keys. */
1247 m->valid = 0;
1248 if (key == KEYC_MOUSE || key == KEYC_DOUBLECLICK) {
1249 if (c->flags & CLIENT_READONLY)
1250 goto out;
1251 key = server_client_check_mouse(c, event);
1252 if (key == KEYC_UNKNOWN)
1253 goto out;
1254
1255 m->valid = 1;
1256 m->key = key;
1257
1258 /*
1259 * Mouse drag is in progress, so fire the callback (now that
1260 * the mouse event is valid).
1261 */
1262 if ((key & KEYC_MASK_KEY) == KEYC_DRAGGING) {
1263 c->tty.mouse_drag_update(c, m);
1264 goto out;
1265 }
1266 event->key = key;
1267 }
1268
1269 /* Find affected pane. */
1270 if (!KEYC_IS_MOUSE(key) || cmd_find_from_mouse(&fs, m, 0) != 0)
1271 cmd_find_from_client(&fs, c, 0);
1272 wp = fs.wp;
1273
1274 /* Forward mouse keys if disabled. */
1275 if (KEYC_IS_MOUSE(key) && !options_get_number(s->options, "mouse"))
1276 goto forward_key;
1277
1278 /* Treat everything as a regular key when pasting is detected. */
1279 if (!KEYC_IS_MOUSE(key) && server_client_assume_paste(s))
1280 goto forward_key;
1281
1282 /*
1283 * Work out the current key table. If the pane is in a mode, use
1284 * the mode table instead of the default key table.
1285 */
1286 if (server_client_is_default_key_table(c, c->keytable) &&
1287 wp != NULL &&
1288 (wme = TAILQ_FIRST(&wp->modes)) != NULL &&
1289 wme->mode->key_table != NULL)
1290 table = key_bindings_get_table(wme->mode->key_table(wme), 1);
1291 else
1292 table = c->keytable;
1293 first = table;
1294
1295 table_changed:
1296 /*
1297 * The prefix always takes precedence and forces a switch to the prefix
1298 * table, unless we are already there.
1299 */
1300 key0 = (key & (KEYC_MASK_KEY|KEYC_MASK_MODIFIERS));
1301 if ((key0 == (key_code)options_get_number(s->options, "prefix") ||
1302 key0 == (key_code)options_get_number(s->options, "prefix2")) &&
1303 strcmp(table->name, "prefix") != 0) {
1304 server_client_set_key_table(c, "prefix");
1305 server_status_client(c);
1306 goto out;
1307 }
1308 flags = c->flags;
1309
1310 try_again:
1311 /* Log key table. */
1312 if (wp == NULL)
1313 log_debug("key table %s (no pane)", table->name);
1314 else
1315 log_debug("key table %s (pane %%%u)", table->name, wp->id);
1316 if (c->flags & CLIENT_REPEAT)
1317 log_debug("currently repeating");
1318
1319 /* Try to see if there is a key binding in the current table. */
1320 bd = key_bindings_get(table, key0);
1321 if (bd != NULL) {
1322 /*
1323 * Key was matched in this table. If currently repeating but a
1324 * non-repeating binding was found, stop repeating and try
1325 * again in the root table.
1326 */
1327 if ((c->flags & CLIENT_REPEAT) &&
1328 (~bd->flags & KEY_BINDING_REPEAT)) {
1329 log_debug("found in key table %s (not repeating)",
1330 table->name);
1331 server_client_set_key_table(c, NULL);
1332 first = table = c->keytable;
1333 c->flags &= ~CLIENT_REPEAT;
1334 server_status_client(c);
1335 goto table_changed;
1336 }
1337 log_debug("found in key table %s", table->name);
1338
1339 /*
1340 * Take a reference to this table to make sure the key binding
1341 * doesn't disappear.
1342 */
1343 table->references++;
1344
1345 /*
1346 * If this is a repeating key, start the timer. Otherwise reset
1347 * the client back to the root table.
1348 */
1349 xtimeout = options_get_number(s->options, "repeat-time");
1350 if (xtimeout != 0 && (bd->flags & KEY_BINDING_REPEAT)) {
1351 c->flags |= CLIENT_REPEAT;
1352
1353 tv.tv_sec = xtimeout / 1000;
1354 tv.tv_usec = (xtimeout % 1000) * 1000L;
1355 evtimer_del(&c->repeat_timer);
1356 evtimer_add(&c->repeat_timer, &tv);
1357 } else {
1358 c->flags &= ~CLIENT_REPEAT;
1359 server_client_set_key_table(c, NULL);
1360 }
1361 server_status_client(c);
1362
1363 /* Execute the key binding. */
1364 key_bindings_dispatch(bd, item, c, event, &fs);
1365 key_bindings_unref_table(table);
1366 goto out;
1367 }
1368
1369 /*
1370 * No match, try the ANY key.
1371 */
1372 if (key0 != KEYC_ANY) {
1373 key0 = KEYC_ANY;
1374 goto try_again;
1375 }
1376
1377 /*
1378 * No match in this table. If not in the root table or if repeating,
1379 * switch the client back to the root table and try again.
1380 */
1381 log_debug("not found in key table %s", table->name);
1382 if (!server_client_is_default_key_table(c, table) ||
1383 (c->flags & CLIENT_REPEAT)) {
1384 log_debug("trying in root table");
1385 server_client_set_key_table(c, NULL);
1386 table = c->keytable;
1387 if (c->flags & CLIENT_REPEAT)
1388 first = table;
1389 c->flags &= ~CLIENT_REPEAT;
1390 server_status_client(c);
1391 goto table_changed;
1392 }
1393
1394 /*
1395 * No match in the root table either. If this wasn't the first table
1396 * tried, don't pass the key to the pane.
1397 */
1398 if (first != table && (~flags & CLIENT_REPEAT)) {
1399 server_client_set_key_table(c, NULL);
1400 server_status_client(c);
1401 goto out;
1402 }
1403
1404 forward_key:
1405 if (c->flags & CLIENT_READONLY)
1406 goto out;
1407 if (wp != NULL)
1408 window_pane_key(wp, c, s, wl, key, m);
1409
1410 out:
1411 if (s != NULL && key != KEYC_FOCUS_OUT)
1412 server_client_update_latest(c);
1413 free(event);
1414 return (CMD_RETURN_NORMAL);
1415 }
1416
1417 /* Handle a key event. */
1418 int
1419 server_client_handle_key(struct client *c, struct key_event *event)
1420 {
1421 struct session *s = c->session;
1422 struct cmdq_item *item;
1423
1424 /* Check the client is good to accept input. */
1425 if (s == NULL || (c->flags & CLIENT_UNATTACHEDFLAGS))
1426 return (0);
1427
1428 /*
1429 * Key presses in overlay mode and the command prompt are a special
1430 * case. The queue might be blocked so they need to be processed
1431 * immediately rather than queued.
1432 */
1433 if (~c->flags & CLIENT_READONLY) {
1434 if (c->message_string != NULL) {
1435 if (c->message_ignore_keys)
1436 return (0);
1437 status_message_clear(c);
1438 }
1439 if (c->overlay_key != NULL) {
1440 switch (c->overlay_key(c, c->overlay_data, event)) {
1441 case 0:
1442 return (0);
1443 case 1:
1444 server_client_clear_overlay(c);
1445 return (0);
1446 }
1447 }
1448 server_client_clear_overlay(c);
1449 if (c->prompt_string != NULL) {
1450 if (status_prompt_key(c, event->key) == 0)
1451 return (0);
1452 }
1453 }
1454
1455 /*
1456 * Add the key to the queue so it happens after any commands queued by
1457 * previous keys.
1458 */
1459 item = cmdq_get_callback(server_client_key_callback, event);
1460 cmdq_append(c, item);
1461 return (1);
1462 }
1463
1464 /* Client functions that need to happen every loop. */
1465 void
1466 server_client_loop(void)
1467 {
1468 struct client *c;
1469 struct window *w;
1470 struct window_pane *wp;
1471
1472 /* Check for window resize. This is done before redrawing. */
1473 RB_FOREACH(w, windows, &windows)
1474 server_client_check_window_resize(w);
1475
1476 /* Check clients. */
1477 TAILQ_FOREACH(c, &clients, entry) {
1478 server_client_check_exit(c);
1479 if (c->session != NULL) {
1480 server_client_check_modes(c);
1481 server_client_check_redraw(c);
1482 server_client_reset_state(c);
1483 }
1484 }
1485
1486 /*
1487 * Any windows will have been redrawn as part of clients, so clear
1488 * their flags now.
1489 */
1490 RB_FOREACH(w, windows, &windows) {
1491 TAILQ_FOREACH(wp, &w->panes, entry) {
1492 if (wp->fd != -1) {
1493 server_client_check_pane_resize(wp);
1494 server_client_check_pane_buffer(wp);
1495 }
1496 wp->flags &= ~PANE_REDRAW;
1497 }
1498 check_window_name(w);
1499 }
1500 }
1501
1502 /* Check if window needs to be resized. */
1503 static void
1504 server_client_check_window_resize(struct window *w)
1505 {
1506 struct winlink *wl;
1507
1508 if (~w->flags & WINDOW_RESIZE)
1509 return;
1510
1511 TAILQ_FOREACH(wl, &w->winlinks, wentry) {
1512 if (wl->session->attached != 0 && wl->session->curw == wl)
1513 break;
1514 }
1515 if (wl == NULL)
1516 return;
1517
1518 log_debug("%s: resizing window @%u", __func__, w->id);
1519 resize_window(w, w->new_sx, w->new_sy, w->new_xpixel, w->new_ypixel);
1520 }
1521
1522 /* Resize timer event. */
1523 static void
1524 server_client_resize_timer(__unused int fd, __unused short events, void *data)
1525 {
1526 struct window_pane *wp = data;
1527
1528 log_debug("%s: %%%u resize timer expired", __func__, wp->id);
1529 evtimer_del(&wp->resize_timer);
1530 }
1531
1532 /* Check if pane should be resized. */
1533 static void
1534 server_client_check_pane_resize(struct window_pane *wp)
1535 {
1536 struct window_pane_resize *r;
1537 struct window_pane_resize *r1;
1538 struct window_pane_resize *first;
1539 struct window_pane_resize *last;
1540 struct timeval tv = { .tv_usec = 250000 };
1541
1542 if (TAILQ_EMPTY(&wp->resize_queue))
1543 return;
1544
1545 if (!event_initialized(&wp->resize_timer))
1546 evtimer_set(&wp->resize_timer, server_client_resize_timer, wp);
1547 if (evtimer_pending(&wp->resize_timer, NULL))
1548 return;
1549
1550 log_debug("%s: %%%u needs to be resized", __func__, wp->id);
1551 TAILQ_FOREACH(r, &wp->resize_queue, entry) {
1552 log_debug("queued resize: %ux%u -> %ux%u", r->osx, r->osy,
1553 r->sx, r->sy);
1554 }
1555
1556 /*
1557 * There are three cases that matter:
1558 *
1559 * - Only one resize. It can just be applied.
1560 *
1561 * - Multiple resizes and the ending size is different from the
1562 * starting size. We can discard all resizes except the most recent.
1563 *
1564 * - Multiple resizes and the ending size is the same as the starting
1565 * size. We must resize at least twice to force the application to
1566 * redraw. So apply the first and leave the last on the queue for
1567 * next time.
1568 */
1569 first = TAILQ_FIRST(&wp->resize_queue);
1570 last = TAILQ_LAST(&wp->resize_queue, window_pane_resizes);
1571 if (first == last) {
1572 /* Only one resize. */
1573 window_pane_send_resize(wp, first->sx, first->sy);
1574 TAILQ_REMOVE(&wp->resize_queue, first, entry);
1575 free(first);
1576 } else if (last->sx != first->osx || last->sy != first->osy) {
1577 /* Multiple resizes ending up with a different size. */
1578 window_pane_send_resize(wp, last->sx, last->sy);
1579 TAILQ_FOREACH_SAFE(r, &wp->resize_queue, entry, r1) {
1580 TAILQ_REMOVE(&wp->resize_queue, r, entry);
1581 free(r);
1582 }
1583 } else {
1584 /*
1585 * Multiple resizes ending up with the same size. There will
1586 * not be more than one to the same size in succession so we
1587 * can just use the last-but-one on the list and leave the last
1588 * for later. We reduce the time until the next check to avoid
1589 * a long delay between the resizes.
1590 */
1591 r = TAILQ_PREV(last, window_pane_resizes, entry);
1592 window_pane_send_resize(wp, r->sx, r->sy);
1593 TAILQ_FOREACH_SAFE(r, &wp->resize_queue, entry, r1) {
1594 if (r == last)
1595 break;
1596 TAILQ_REMOVE(&wp->resize_queue, r, entry);
1597 free(r);
1598 }
1599 tv.tv_usec = 10000;
1600 }
1601 evtimer_add(&wp->resize_timer, &tv);
1602 }
1603
1604 /* Check pane buffer size. */
1605 static void
1606 server_client_check_pane_buffer(struct window_pane *wp)
1607 {
1608 struct evbuffer *evb = wp->event->input;
1609 size_t minimum;
1610 struct client *c;
1611 struct window_pane_offset *wpo;
1612 int off = 1, flag;
1613 u_int attached_clients = 0;
1614 size_t new_size;
1615
1616 /*
1617 * Work out the minimum used size. This is the most that can be removed
1618 * from the buffer.
1619 */
1620 minimum = wp->offset.used;
1621 if (wp->pipe_fd != -1 && wp->pipe_offset.used < minimum)
1622 minimum = wp->pipe_offset.used;
1623 TAILQ_FOREACH(c, &clients, entry) {
1624 if (c->session == NULL)
1625 continue;
1626 attached_clients++;
1627
1628 if (~c->flags & CLIENT_CONTROL) {
1629 off = 0;
1630 continue;
1631 }
1632 wpo = control_pane_offset(c, wp, &flag);
1633 if (wpo == NULL) {
1634 off = 0;
1635 continue;
1636 }
1637 if (!flag)
1638 off = 0;
1639
1640 window_pane_get_new_data(wp, wpo, &new_size);
1641 log_debug("%s: %s has %zu bytes used and %zu left for %%%u",
1642 __func__, c->name, wpo->used - wp->base_offset, new_size,
1643 wp->id);
1644 if (wpo->used < minimum)
1645 minimum = wpo->used;
1646 }
1647 if (attached_clients == 0)
1648 off = 0;
1649 minimum -= wp->base_offset;
1650 if (minimum == 0)
1651 goto out;
1652
1653 /* Drain the buffer. */
1654 log_debug("%s: %%%u has %zu minimum (of %zu) bytes used", __func__,
1655 wp->id, minimum, EVBUFFER_LENGTH(evb));
1656 evbuffer_drain(evb, minimum);
1657
1658 /*
1659 * Adjust the base offset. If it would roll over, all the offsets into
1660 * the buffer need to be adjusted.
1661 */
1662 if (wp->base_offset > SIZE_MAX - minimum) {
1663 log_debug("%s: %%%u base offset has wrapped", __func__, wp->id);
1664 wp->offset.used -= wp->base_offset;
1665 if (wp->pipe_fd != -1)
1666 wp->pipe_offset.used -= wp->base_offset;
1667 TAILQ_FOREACH(c, &clients, entry) {
1668 if (c->session == NULL || (~c->flags & CLIENT_CONTROL))
1669 continue;
1670 wpo = control_pane_offset(c, wp, &flag);
1671 if (wpo != NULL && !flag)
1672 wpo->used -= wp->base_offset;
1673 }
1674 wp->base_offset = minimum;
1675 } else
1676 wp->base_offset += minimum;
1677
1678 out:
1679 /*
1680 * If there is data remaining, and there are no clients able to consume
1681 * it, do not read any more. This is true when there are attached
1682 * clients, all of which are control clients which are not able to
1683 * accept any more data.
1684 */
1685 log_debug("%s: pane %%%u is %s", __func__, wp->id, off ? "off" : "on");
1686 if (off)
1687 bufferevent_disable(wp->event, EV_READ);
1688 else
1689 bufferevent_enable(wp->event, EV_READ);
1690 }
1691
1692 /*
1693 * Update cursor position and mode settings. The scroll region and attributes
1694 * are cleared when idle (waiting for an event) as this is the most likely time
1695 * a user may interrupt tmux, for example with ~^Z in ssh(1). This is a
1696 * compromise between excessive resets and likelihood of an interrupt.
1697 *
1698 * tty_region/tty_reset/tty_update_mode already take care of not resetting
1699 * things that are already in their default state.
1700 */
1701 static void
1702 server_client_reset_state(struct client *c)
1703 {
1704 struct tty *tty = &c->tty;
1705 struct window *w = c->session->curw->window;
1706 struct window_pane *wp = server_client_get_pane(c), *loop;
1707 struct screen *s = NULL;
1708 struct options *oo = c->session->options;
1709 int mode = 0, cursor, flags, n;
1710 u_int cx = 0, cy = 0, ox, oy, sx, sy;
1711
1712 if (c->flags & (CLIENT_CONTROL|CLIENT_SUSPENDED))
1713 return;
1714
1715 /* Disable the block flag. */
1716 flags = (tty->flags & TTY_BLOCK);
1717 tty->flags &= ~TTY_BLOCK;
1718
1719 /* Get mode from overlay if any, else from screen. */
1720 if (c->overlay_draw != NULL) {
1721 if (c->overlay_mode != NULL)
1722 s = c->overlay_mode(c, c->overlay_data, &cx, &cy);
1723 } else
1724 s = wp->screen;
1725 if (s != NULL)
1726 mode = s->mode;
1727 if (log_get_level() != 0) {
1728 log_debug("%s: client %s mode %s", __func__, c->name,
1729 screen_mode_to_string(mode));
1730 }
1731
1732 /* Reset region and margin. */
1733 tty_region_off(tty);
1734 tty_margin_off(tty);
1735
1736 /* Move cursor to pane cursor and offset. */
1737 if (c->prompt_string != NULL) {
1738 n = options_get_number(c->session->options, "status-position");
1739 if (n == 0)
1740 cy = 0;
1741 else {
1742 n = status_line_size(c);
1743 if (n == 0)
1744 cy = tty->sy - 1;
1745 else
1746 cy = tty->sy - n;
1747 }
1748 cx = c->prompt_cursor;
1749 mode &= ~MODE_CURSOR;
1750 } else if (c->overlay_draw == NULL) {
1751 cursor = 0;
1752 tty_window_offset(tty, &ox, &oy, &sx, &sy);
1753 if (wp->xoff + s->cx >= ox && wp->xoff + s->cx <= ox + sx &&
1754 wp->yoff + s->cy >= oy && wp->yoff + s->cy <= oy + sy) {
1755 cursor = 1;
1756
1757 cx = wp->xoff + s->cx - ox;
1758 cy = wp->yoff + s->cy - oy;
1759
1760 if (status_at_line(c) == 0)
1761 cy += status_line_size(c);
1762 }
1763 if (!cursor)
1764 mode &= ~MODE_CURSOR;
1765 }
1766 log_debug("%s: cursor to %u,%u", __func__, cx, cy);
1767 tty_cursor(tty, cx, cy);
1768
1769 /*
1770 * Set mouse mode if requested. To support dragging, always use button
1771 * mode.
1772 */
1773 if (options_get_number(oo, "mouse")) {
1774 if (c->overlay_draw == NULL) {
1775 mode &= ~ALL_MOUSE_MODES;
1776 TAILQ_FOREACH(loop, &w->panes, entry) {
1777 if (loop->screen->mode & MODE_MOUSE_ALL)
1778 mode |= MODE_MOUSE_ALL;
1779 }
1780 }
1781 if (~mode & MODE_MOUSE_ALL)
1782 mode |= MODE_MOUSE_BUTTON;
1783 }
1784
1785 /* Clear bracketed paste mode if at the prompt. */
1786 if (c->overlay_draw == NULL && c->prompt_string != NULL)
1787 mode &= ~MODE_BRACKETPASTE;
1788
1789 /* Set the terminal mode and reset attributes. */
1790 tty_update_mode(tty, mode, s);
1791 tty_reset(tty);
1792
1793 /* All writing must be done, send a sync end (if it was started). */
1794 tty_sync_end(tty);
1795 tty->flags |= flags;
1796 }
1797
1798 /* Repeat time callback. */
1799 static void
1800 server_client_repeat_timer(__unused int fd, __unused short events, void *data)
1801 {
1802 struct client *c = data;
1803
1804 if (c->flags & CLIENT_REPEAT) {
1805 server_client_set_key_table(c, NULL);
1806 c->flags &= ~CLIENT_REPEAT;
1807 server_status_client(c);
1808 }
1809 }
1810
1811 /* Double-click callback. */
1812 static void
1813 server_client_click_timer(__unused int fd, __unused short events, void *data)
1814 {
1815 struct client *c = data;
1816 struct key_event *event;
1817
1818 log_debug("click timer expired");
1819
1820 if (c->flags & CLIENT_TRIPLECLICK) {
1821 /*
1822 * Waiting for a third click that hasn't happened, so this must
1823 * have been a double click.
1824 */
1825 event = xmalloc(sizeof *event);
1826 event->key = KEYC_DOUBLECLICK;
1827 memcpy(&event->m, &c->click_event, sizeof event->m);
1828 if (!server_client_handle_key(c, event))
1829 free(event);
1830 }
1831 c->flags &= ~(CLIENT_DOUBLECLICK|CLIENT_TRIPLECLICK);
1832 }
1833
1834 /* Check if client should be exited. */
1835 static void
1836 server_client_check_exit(struct client *c)
1837 {
1838 struct client_file *cf;
1839 const char *name = c->exit_session;
1840 char *data;
1841 size_t size, msize;
1842
1843 if (c->flags & (CLIENT_DEAD|CLIENT_EXITED))
1844 return;
1845 if (~c->flags & CLIENT_EXIT)
1846 return;
1847
1848 if (c->flags & CLIENT_CONTROL) {
1849 control_discard(c);
1850 if (!control_all_done(c))
1851 return;
1852 }
1853 RB_FOREACH(cf, client_files, &c->files) {
1854 if (EVBUFFER_LENGTH(cf->buffer) != 0)
1855 return;
1856 }
1857 c->flags |= CLIENT_EXITED;
1858
1859 switch (c->exit_type) {
1860 case CLIENT_EXIT_RETURN:
1861 if (c->exit_message != NULL)
1862 msize = strlen(c->exit_message) + 1;
1863 else
1864 msize = 0;
1865 size = (sizeof c->retval) + msize;
1866 data = xmalloc(size);
1867 memcpy(data, &c->retval, sizeof c->retval);
1868 if (c->exit_message != NULL)
1869 memcpy(data + sizeof c->retval, c->exit_message, msize);
1870 proc_send(c->peer, MSG_EXIT, -1, data, size);
1871 free(data);
1872 break;
1873 case CLIENT_EXIT_SHUTDOWN:
1874 proc_send(c->peer, MSG_SHUTDOWN, -1, NULL, 0);
1875 break;
1876 case CLIENT_EXIT_DETACH:
1877 proc_send(c->peer, c->exit_msgtype, -1, name, strlen(name) + 1);
1878 break;
1879 }
1880 free(c->exit_session);
1881 free(c->exit_message);
1882 }
1883
1884 /* Redraw timer callback. */
1885 static void
1886 server_client_redraw_timer(__unused int fd, __unused short events,
1887 __unused void *data)
1888 {
1889 log_debug("redraw timer fired");
1890 }
1891
1892 /*
1893 * Check if modes need to be updated. Only modes in the current window are
1894 * updated and it is done when the status line is redrawn.
1895 */
1896 static void
1897 server_client_check_modes(struct client *c)
1898 {
1899 struct window *w = c->session->curw->window;
1900 struct window_pane *wp;
1901 struct window_mode_entry *wme;
1902
1903 if (c->flags & (CLIENT_CONTROL|CLIENT_SUSPENDED))
1904 return;
1905 if (~c->flags & CLIENT_REDRAWSTATUS)
1906 return;
1907 TAILQ_FOREACH(wp, &w->panes, entry) {
1908 wme = TAILQ_FIRST(&wp->modes);
1909 if (wme != NULL && wme->mode->update != NULL)
1910 wme->mode->update(wme);
1911 }
1912 }
1913
1914 /* Check for client redraws. */
1915 static void
1916 server_client_check_redraw(struct client *c)
1917 {
1918 struct session *s = c->session;
1919 struct tty *tty = &c->tty;
1920 struct window *w = c->session->curw->window;
1921 struct window_pane *wp;
1922 int needed, flags, mode = tty->mode, new_flags = 0;
1923 int redraw;
1924 u_int bit = 0;
1925 struct timeval tv = { .tv_usec = 1000 };
1926 static struct event ev;
1927 size_t left;
1928
1929 if (c->flags & (CLIENT_CONTROL|CLIENT_SUSPENDED))
1930 return;
1931 if (c->flags & CLIENT_ALLREDRAWFLAGS) {
1932 log_debug("%s: redraw%s%s%s%s%s", c->name,
1933 (c->flags & CLIENT_REDRAWWINDOW) ? " window" : "",
1934 (c->flags & CLIENT_REDRAWSTATUS) ? " status" : "",
1935 (c->flags & CLIENT_REDRAWBORDERS) ? " borders" : "",
1936 (c->flags & CLIENT_REDRAWOVERLAY) ? " overlay" : "",
1937 (c->flags & CLIENT_REDRAWPANES) ? " panes" : "");
1938 }
1939
1940 /*
1941 * If there is outstanding data, defer the redraw until it has been
1942 * consumed. We can just add a timer to get out of the event loop and
1943 * end up back here.
1944 */
1945 needed = 0;
1946 if (c->flags & CLIENT_ALLREDRAWFLAGS)
1947 needed = 1;
1948 else {
1949 TAILQ_FOREACH(wp, &w->panes, entry) {
1950 if (wp->flags & PANE_REDRAW) {
1951 needed = 1;
1952 break;
1953 }
1954 }
1955 if (needed)
1956 new_flags |= CLIENT_REDRAWPANES;
1957 }
1958 if (needed && (left = EVBUFFER_LENGTH(tty->out)) != 0) {
1959 log_debug("%s: redraw deferred (%zu left)", c->name, left);
1960 if (!evtimer_initialized(&ev))
1961 evtimer_set(&ev, server_client_redraw_timer, NULL);
1962 if (!evtimer_pending(&ev, NULL)) {
1963 log_debug("redraw timer started");
1964 evtimer_add(&ev, &tv);
1965 }
1966
1967 if (~c->flags & CLIENT_REDRAWWINDOW) {
1968 TAILQ_FOREACH(wp, &w->panes, entry) {
1969 if (wp->flags & PANE_REDRAW) {
1970 log_debug("%s: pane %%%u needs redraw",
1971 c->name, wp->id);
1972 c->redraw_panes |= (1 << bit);
1973 }
1974 if (++bit == 64) {
1975 /*
1976 * If more that 64 panes, give up and
1977 * just redraw the window.
1978 */
1979 new_flags &= CLIENT_REDRAWPANES;
1980 new_flags |= CLIENT_REDRAWWINDOW;
1981 break;
1982 }
1983 }
1984 if (c->redraw_panes != 0)
1985 c->flags |= CLIENT_REDRAWPANES;
1986 }
1987 c->flags |= new_flags;
1988 return;
1989 } else if (needed)
1990 log_debug("%s: redraw needed", c->name);
1991
1992 flags = tty->flags & (TTY_BLOCK|TTY_FREEZE|TTY_NOCURSOR);
1993 tty->flags = (tty->flags & ~(TTY_BLOCK|TTY_FREEZE))|TTY_NOCURSOR;
1994
1995 if (~c->flags & CLIENT_REDRAWWINDOW) {
1996 /*
1997 * If not redrawing the entire window, check whether each pane
1998 * needs to be redrawn.
1999 */
2000 TAILQ_FOREACH(wp, &w->panes, entry) {
2001 redraw = 0;
2002 if (wp->flags & PANE_REDRAW)
2003 redraw = 1;
2004 else if (c->flags & CLIENT_REDRAWPANES)
2005 redraw = !!(c->redraw_panes & (1 << bit));
2006 bit++;
2007 if (!redraw)
2008 continue;
2009 log_debug("%s: redrawing pane %%%u", __func__, wp->id);
2010 screen_redraw_pane(c, wp);
2011 }
2012 c->redraw_panes = 0;
2013 c->flags &= ~CLIENT_REDRAWPANES;
2014 }
2015
2016 if (c->flags & CLIENT_ALLREDRAWFLAGS) {
2017 if (options_get_number(s->options, "set-titles"))
2018 server_client_set_title(c);
2019 screen_redraw_screen(c);
2020 }
2021
2022 tty->flags = (tty->flags & ~TTY_NOCURSOR)|(flags & TTY_NOCURSOR);
2023 tty_update_mode(tty, mode, NULL);
2024 tty->flags = (tty->flags & ~(TTY_BLOCK|TTY_FREEZE|TTY_NOCURSOR))|flags;
2025
2026 c->flags &= ~(CLIENT_ALLREDRAWFLAGS|CLIENT_STATUSFORCE);
2027
2028 if (needed) {
2029 /*
2030 * We would have deferred the redraw unless the output buffer
2031 * was empty, so we can record how many bytes the redraw
2032 * generated.
2033 */
2034 c->redraw = EVBUFFER_LENGTH(tty->out);
2035 log_debug("%s: redraw added %zu bytes", c->name, c->redraw);
2036 }
2037 }
2038
2039 /* Set client title. */
2040 static void
2041 server_client_set_title(struct client *c)
2042 {
2043 struct session *s = c->session;
2044 const char *template;
2045 char *title;
2046 struct format_tree *ft;
2047
2048 template = options_get_string(s->options, "set-titles-string");
2049
2050 ft = format_create(c, NULL, FORMAT_NONE, 0);
2051 format_defaults(ft, c, NULL, NULL, NULL);
2052
2053 title = format_expand_time(ft, template);
2054 if (c->title == NULL || strcmp(title, c->title) != 0) {
2055 free(c->title);
2056 c->title = xstrdup(title);
2057 tty_set_title(&c->tty, c->title);
2058 }
2059 free(title);
2060
2061 format_free(ft);
2062 }
2063
2064 /* Dispatch message from client. */
2065 static void
2066 server_client_dispatch(struct imsg *imsg, void *arg)
2067 {
2068 struct client *c = arg;
2069 ssize_t datalen;
2070 struct session *s;
2071
2072 if (c->flags & CLIENT_DEAD)
2073 return;
2074
2075 if (imsg == NULL) {
2076 server_client_lost(c);
2077 return;
2078 }
2079
2080 datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
2081
2082 switch (imsg->hdr.type) {
2083 case MSG_IDENTIFY_CLIENTPID:
2084 case MSG_IDENTIFY_CWD:
2085 case MSG_IDENTIFY_ENVIRON:
2086 case MSG_IDENTIFY_FEATURES:
2087 case MSG_IDENTIFY_FLAGS:
2088 case MSG_IDENTIFY_LONGFLAGS:
2089 case MSG_IDENTIFY_STDIN:
2090 case MSG_IDENTIFY_STDOUT:
2091 case MSG_IDENTIFY_TERM:
2092 case MSG_IDENTIFY_TERMINFO:
2093 case MSG_IDENTIFY_TTYNAME:
2094 case MSG_IDENTIFY_DONE:
2095 server_client_dispatch_identify(c, imsg);
2096 break;
2097 case MSG_COMMAND:
2098 server_client_dispatch_command(c, imsg);
2099 break;
2100 case MSG_RESIZE:
2101 if (datalen != 0)
2102 fatalx("bad MSG_RESIZE size");
2103
2104 if (c->flags & CLIENT_CONTROL)
2105 break;
2106 server_client_update_latest(c);
2107 tty_resize(&c->tty);
2108 recalculate_sizes();
2109 if (c->overlay_resize == NULL)
2110 server_client_clear_overlay(c);
2111 else
2112 c->overlay_resize(c, c->overlay_data);
2113 server_redraw_client(c);
2114 if (c->session != NULL)
2115 notify_client("client-resized", c);
2116 break;
2117 case MSG_EXITING:
2118 if (datalen != 0)
2119 fatalx("bad MSG_EXITING size");
2120 server_client_set_session(c, NULL);
2121 recalculate_sizes();
2122 tty_close(&c->tty);
2123 proc_send(c->peer, MSG_EXITED, -1, NULL, 0);
2124 break;
2125 case MSG_WAKEUP:
2126 case MSG_UNLOCK:
2127 if (datalen != 0)
2128 fatalx("bad MSG_WAKEUP size");
2129
2130 if (!(c->flags & CLIENT_SUSPENDED))
2131 break;
2132 c->flags &= ~CLIENT_SUSPENDED;
2133
2134 if (c->fd == -1 || c->session == NULL) /* exited already */
2135 break;
2136 s = c->session;
2137
2138 if (gettimeofday(&c->activity_time, NULL) != 0)
2139 fatal("gettimeofday failed");
2140
2141 tty_start_tty(&c->tty);
2142 server_redraw_client(c);
2143 recalculate_sizes();
2144
2145 if (s != NULL)
2146 session_update_activity(s, &c->activity_time);
2147 break;
2148 case MSG_SHELL:
2149 if (datalen != 0)
2150 fatalx("bad MSG_SHELL size");
2151
2152 server_client_dispatch_shell(c);
2153 break;
2154 case MSG_WRITE_READY:
2155 file_write_ready(&c->files, imsg);
2156 break;
2157 case MSG_READ:
2158 file_read_data(&c->files, imsg);
2159 break;
2160 case MSG_READ_DONE:
2161 file_read_done(&c->files, imsg);
2162 break;
2163 }
2164 }
2165
2166 /* Callback when command is done. */
2167 static enum cmd_retval
2168 server_client_command_done(struct cmdq_item *item, __unused void *data)
2169 {
2170 struct client *c = cmdq_get_client(item);
2171
2172 if (~c->flags & CLIENT_ATTACHED)
2173 c->flags |= CLIENT_EXIT;
2174 else if (~c->flags & CLIENT_EXIT)
2175 tty_send_requests(&c->tty);
2176 return (CMD_RETURN_NORMAL);
2177 }
2178
2179 /* Handle command message. */
2180 static void
2181 server_client_dispatch_command(struct client *c, struct imsg *imsg)
2182 {
2183 struct msg_command data;
2184 char *buf;
2185 size_t len;
2186 int argc;
2187 char **argv, *cause;
2188 struct cmd_parse_result *pr;
2189 struct args_value *values;
2190
2191 if (c->flags & CLIENT_EXIT)
2192 return;
2193
2194 if (imsg->hdr.len - IMSG_HEADER_SIZE < sizeof data)
2195 fatalx("bad MSG_COMMAND size");
2196 memcpy(&data, imsg->data, sizeof data);
2197
2198 buf = (char *)imsg->data + sizeof data;
2199 len = imsg->hdr.len - IMSG_HEADER_SIZE - sizeof data;
2200 if (len > 0 && buf[len - 1] != '\0')
2201 fatalx("bad MSG_COMMAND string");
2202
2203 argc = data.argc;
2204 if (cmd_unpack_argv(buf, len, argc, &argv) != 0) {
2205 cause = xstrdup("command too long");
2206 goto error;
2207 }
2208
2209 if (argc == 0) {
2210 argc = 1;
2211 argv = xcalloc(1, sizeof *argv);
2212 *argv = xstrdup("new-session");
2213 }
2214
2215 values = args_from_vector(argc, argv);
2216 pr = cmd_parse_from_arguments(values, argc, NULL);
2217 switch (pr->status) {
2218 case CMD_PARSE_ERROR:
2219 cause = pr->error;
2220 goto error;
2221 case CMD_PARSE_SUCCESS:
2222 break;
2223 }
2224 args_free_values(values, argc);
2225 free(values);
2226 cmd_free_argv(argc, argv);
2227
2228 cmdq_append(c, cmdq_get_command(pr->cmdlist, NULL));
2229 cmdq_append(c, cmdq_get_callback(server_client_command_done, NULL));
2230
2231 cmd_list_free(pr->cmdlist);
2232 return;
2233
2234 error:
2235 cmd_free_argv(argc, argv);
2236
2237 cmdq_append(c, cmdq_get_error(cause));
2238 free(cause);
2239
2240 c->flags |= CLIENT_EXIT;
2241 }
2242
2243 /* Handle identify message. */
2244 static void
2245 server_client_dispatch_identify(struct client *c, struct imsg *imsg)
2246 {
2247 const char *data, *home;
2248 size_t datalen;
2249 int flags, feat;
2250 uint64_t longflags;
2251 char *name;
2252
2253 if (c->flags & CLIENT_IDENTIFIED)
2254 fatalx("out-of-order identify message");
2255
2256 data = imsg->data;
2257 datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
2258
2259 switch (imsg->hdr.type) {
2260 case MSG_IDENTIFY_FEATURES:
2261 if (datalen != sizeof feat)
2262 fatalx("bad MSG_IDENTIFY_FEATURES size");
2263 memcpy(&feat, data, sizeof feat);
2264 c->term_features |= feat;
2265 log_debug("client %p IDENTIFY_FEATURES %s", c,
2266 tty_get_features(feat));
2267 break;
2268 case MSG_IDENTIFY_FLAGS:
2269 if (datalen != sizeof flags)
2270 fatalx("bad MSG_IDENTIFY_FLAGS size");
2271 memcpy(&flags, data, sizeof flags);
2272 c->flags |= flags;
2273 log_debug("client %p IDENTIFY_FLAGS %#x", c, flags);
2274 break;
2275 case MSG_IDENTIFY_LONGFLAGS:
2276 if (datalen != sizeof longflags)
2277 fatalx("bad MSG_IDENTIFY_LONGFLAGS size");
2278 memcpy(&longflags, data, sizeof longflags);
2279 c->flags |= longflags;
2280 log_debug("client %p IDENTIFY_LONGFLAGS %#llx", c,
2281 (unsigned long long)longflags);
2282 break;
2283 case MSG_IDENTIFY_TERM:
2284 if (datalen == 0 || data[datalen - 1] != '\0')
2285 fatalx("bad MSG_IDENTIFY_TERM string");
2286 if (*data == '\0')
2287 c->term_name = xstrdup("unknown");
2288 else
2289 c->term_name = xstrdup(data);
2290 log_debug("client %p IDENTIFY_TERM %s", c, data);
2291 break;
2292 case MSG_IDENTIFY_TERMINFO:
2293 if (datalen == 0 || data[datalen - 1] != '\0')
2294 fatalx("bad MSG_IDENTIFY_TERMINFO string");
2295 c->term_caps = xreallocarray(c->term_caps, c->term_ncaps + 1,
2296 sizeof *c->term_caps);
2297 c->term_caps[c->term_ncaps++] = xstrdup(data);
2298 log_debug("client %p IDENTIFY_TERMINFO %s", c, data);
2299 break;
2300 case MSG_IDENTIFY_TTYNAME:
2301 if (datalen == 0 || data[datalen - 1] != '\0')
2302 fatalx("bad MSG_IDENTIFY_TTYNAME string");
2303 c->ttyname = xstrdup(data);
2304 log_debug("client %p IDENTIFY_TTYNAME %s", c, data);
2305 break;
2306 case MSG_IDENTIFY_CWD:
2307 if (datalen == 0 || data[datalen - 1] != '\0')
2308 fatalx("bad MSG_IDENTIFY_CWD string");
2309 if (access(data, X_OK) == 0)
2310 c->cwd = xstrdup(data);
2311 else if ((home = find_home()) != NULL)
2312 c->cwd = xstrdup(home);
2313 else
2314 c->cwd = xstrdup("/");
2315 log_debug("client %p IDENTIFY_CWD %s", c, data);
2316 break;
2317 case MSG_IDENTIFY_STDIN:
2318 if (datalen != 0)
2319 fatalx("bad MSG_IDENTIFY_STDIN size");
2320 c->fd = imsg->fd;
2321 log_debug("client %p IDENTIFY_STDIN %d", c, imsg->fd);
2322 break;
2323 case MSG_IDENTIFY_STDOUT:
2324 if (datalen != 0)
2325 fatalx("bad MSG_IDENTIFY_STDOUT size");
2326 c->out_fd = imsg->fd;
2327 log_debug("client %p IDENTIFY_STDOUT %d", c, imsg->fd);
2328 break;
2329 case MSG_IDENTIFY_ENVIRON:
2330 if (datalen == 0 || data[datalen - 1] != '\0')
2331 fatalx("bad MSG_IDENTIFY_ENVIRON string");
2332 if (strchr(data, '=') != NULL)
2333 environ_put(c->environ, data, 0);
2334 log_debug("client %p IDENTIFY_ENVIRON %s", c, data);
2335 break;
2336 case MSG_IDENTIFY_CLIENTPID:
2337 if (datalen != sizeof c->pid)
2338 fatalx("bad MSG_IDENTIFY_CLIENTPID size");
2339 memcpy(&c->pid, data, sizeof c->pid);
2340 log_debug("client %p IDENTIFY_CLIENTPID %ld", c, (long)c->pid);
2341 break;
2342 default:
2343 break;
2344 }
2345
2346 if (imsg->hdr.type != MSG_IDENTIFY_DONE)
2347 return;
2348 c->flags |= CLIENT_IDENTIFIED;
2349
2350 if (*c->ttyname != '\0')
2351 name = xstrdup(c->ttyname);
2352 else
2353 xasprintf(&name, "client-%ld", (long)c->pid);
2354 c->name = name;
2355 log_debug("client %p name is %s", c, c->name);
2356
2357 if (c->flags & CLIENT_CONTROL)
2358 control_start(c);
2359 else if (c->fd != -1) {
2360 if (tty_init(&c->tty, c) != 0) {
2361 close(c->fd);
2362 c->fd = -1;
2363 } else {
2364 tty_resize(&c->tty);
2365 c->flags |= CLIENT_TERMINAL;
2366 }
2367 close(c->out_fd);
2368 c->out_fd = -1;
2369 }
2370
2371 /*
2372 * If this is the first client, load configuration files. Any later
2373 * clients are allowed to continue with their command even if the
2374 * config has not been loaded - they might have been run from inside it
2375 */
2376 if ((~c->flags & CLIENT_EXIT) &&
2377 !cfg_finished &&
2378 c == TAILQ_FIRST(&clients))
2379 start_cfg();
2380 }
2381
2382 /* Handle shell message. */
2383 static void
2384 server_client_dispatch_shell(struct client *c)
2385 {
2386 const char *shell;
2387
2388 shell = options_get_string(global_s_options, "default-shell");
2389 if (!checkshell(shell))
2390 shell = _PATH_BSHELL;
2391 proc_send(c->peer, MSG_SHELL, -1, shell, strlen(shell) + 1);
2392
2393 proc_kill_peer(c->peer);
2394 }
2395
2396 /* Get client working directory. */
2397 const char *
2398 server_client_get_cwd(struct client *c, struct session *s)
2399 {
2400 const char *home;
2401
2402 if (!cfg_finished && cfg_client != NULL)
2403 return (cfg_client->cwd);
2404 if (c != NULL && c->session == NULL && c->cwd != NULL)
2405 return (c->cwd);
2406 if (s != NULL && s->cwd != NULL)
2407 return (s->cwd);
2408 if (c != NULL && (s = c->session) != NULL && s->cwd != NULL)
2409 return (s->cwd);
2410 if ((home = find_home()) != NULL)
2411 return (home);
2412 return ("/");
2413 }
2414
2415 /* Get control client flags. */
2416 static uint64_t
2417 server_client_control_flags(struct client *c, const char *next)
2418 {
2419 if (strcmp(next, "pause-after") == 0) {
2420 c->pause_age = 0;
2421 return (CLIENT_CONTROL_PAUSEAFTER);
2422 }
2423 if (sscanf(next, "pause-after=%u", &c->pause_age) == 1) {
2424 c->pause_age *= 1000;
2425 return (CLIENT_CONTROL_PAUSEAFTER);
2426 }
2427 if (strcmp(next, "no-output") == 0)
2428 return (CLIENT_CONTROL_NOOUTPUT);
2429 if (strcmp(next, "wait-exit") == 0)
2430 return (CLIENT_CONTROL_WAITEXIT);
2431 return (0);
2432 }
2433
2434 /* Set client flags. */
2435 void
2436 server_client_set_flags(struct client *c, const char *flags)
2437 {
2438 char *s, *copy, *next;
2439 uint64_t flag;
2440 int not;
2441
2442 s = copy = xstrdup(flags);
2443 while ((next = strsep(&s, ",")) != NULL) {
2444 not = (*next == '!');
2445 if (not)
2446 next++;
2447
2448 if (c->flags & CLIENT_CONTROL)
2449 flag = server_client_control_flags(c, next);
2450 else
2451 flag = 0;
2452 if (strcmp(next, "read-only") == 0)
2453 flag = CLIENT_READONLY;
2454 else if (strcmp(next, "ignore-size") == 0)
2455 flag = CLIENT_IGNORESIZE;
2456 else if (strcmp(next, "active-pane") == 0)
2457 flag = CLIENT_ACTIVEPANE;
2458 if (flag == 0)
2459 continue;
2460
2461 log_debug("client %s set flag %s", c->name, next);
2462 if (not)
2463 c->flags &= ~flag;
2464 else
2465 c->flags |= flag;
2466 if (flag == CLIENT_CONTROL_NOOUTPUT)
2467 control_reset_offsets(c);
2468 }
2469 free(copy);
2470 proc_send(c->peer, MSG_FLAGS, -1, &c->flags, sizeof c->flags);
2471 }
2472
2473 /* Get client flags. This is only flags useful to show to users. */
2474 const char *
2475 server_client_get_flags(struct client *c)
2476 {
2477 static char s[256];
2478 char tmp[32];
2479
2480 *s = '\0';
2481 if (c->flags & CLIENT_ATTACHED)
2482 strlcat(s, "attached,", sizeof s);
2483 if (c->flags & CLIENT_FOCUSED)
2484 strlcat(s, "focused,", sizeof s);
2485 if (c->flags & CLIENT_CONTROL)
2486 strlcat(s, "control-mode,", sizeof s);
2487 if (c->flags & CLIENT_IGNORESIZE)
2488 strlcat(s, "ignore-size,", sizeof s);
2489 if (c->flags & CLIENT_CONTROL_NOOUTPUT)
2490 strlcat(s, "no-output,", sizeof s);
2491 if (c->flags & CLIENT_CONTROL_WAITEXIT)
2492 strlcat(s, "wait-exit,", sizeof s);
2493 if (c->flags & CLIENT_CONTROL_PAUSEAFTER) {
2494 xsnprintf(tmp, sizeof tmp, "pause-after=%u,",
2495 c->pause_age / 1000);
2496 strlcat(s, tmp, sizeof s);
2497 }
2498 if (c->flags & CLIENT_READONLY)
2499 strlcat(s, "read-only,", sizeof s);
2500 if (c->flags & CLIENT_ACTIVEPANE)
2501 strlcat(s, "active-pane,", sizeof s);
2502 if (c->flags & CLIENT_SUSPENDED)
2503 strlcat(s, "suspended,", sizeof s);
2504 if (c->flags & CLIENT_UTF8)
2505 strlcat(s, "UTF-8,", sizeof s);
2506 if (*s != '\0')
2507 s[strlen(s) - 1] = '\0';
2508 return (s);
2509 }
2510
2511 /* Get client window. */
2512 struct client_window *
2513 server_client_get_client_window(struct client *c, u_int id)
2514 {
2515 struct client_window cw = { .window = id };
2516
2517 return (RB_FIND(client_windows, &c->windows, &cw));
2518 }
2519
2520 /* Add client window. */
2521 struct client_window *
2522 server_client_add_client_window(struct client *c, u_int id)
2523 {
2524 struct client_window *cw;
2525
2526 cw = server_client_get_client_window(c, id);
2527 if (cw == NULL) {
2528 cw = xcalloc(1, sizeof *cw);
2529 cw->window = id;
2530 RB_INSERT(client_windows, &c->windows, cw);
2531 }
2532 return cw;
2533 }
2534
2535 /* Get client active pane. */
2536 struct window_pane *
2537 server_client_get_pane(struct client *c)
2538 {
2539 struct session *s = c->session;
2540 struct client_window *cw;
2541
2542 if (s == NULL)
2543 return (NULL);
2544
2545 if (~c->flags & CLIENT_ACTIVEPANE)
2546 return (s->curw->window->active);
2547 cw = server_client_get_client_window(c, s->curw->window->id);
2548 if (cw == NULL)
2549 return (s->curw->window->active);
2550 return (cw->pane);
2551 }
2552
2553 /* Set client active pane. */
2554 void
2555 server_client_set_pane(struct client *c, struct window_pane *wp)
2556 {
2557 struct session *s = c->session;
2558 struct client_window *cw;
2559
2560 if (s == NULL)
2561 return;
2562
2563 cw = server_client_add_client_window(c, s->curw->window->id);
2564 cw->pane = wp;
2565 log_debug("%s pane now %%%u", c->name, wp->id);
2566 }
2567
2568 /* Remove pane from client lists. */
2569 void
2570 server_client_remove_pane(struct window_pane *wp)
2571 {
2572 struct client *c;
2573 struct window *w = wp->window;
2574 struct client_window *cw;
2575
2576 TAILQ_FOREACH(c, &clients, entry) {
2577 cw = server_client_get_client_window(c, w->id);
2578 if (cw != NULL && cw->pane == wp) {
2579 RB_REMOVE(client_windows, &c->windows, cw);
2580 free(cw);
2581 }
2582 }
2583 }