1/* $OpenBSD$ */
2
3/*
4 * Copyright (c) 2009 Nicholas Marriott <[email protected]>
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 <stdlib.h>
27#include <string.h>
28#include <time.h>
29#include <unistd.h>
30
31#include "tmux.h"
32
33static void server_client_free(int, short, void *);
34static void server_client_check_focus(struct window_pane *);
35static void server_client_check_resize(struct window_pane *);
36static key_code server_client_check_mouse(struct client *, struct key_event *);
37static void server_client_repeat_timer(int, short, void *);
38static void server_client_click_timer(int, short, void *);
39static void server_client_check_exit(struct client *);
40static void server_client_check_redraw(struct client *);
41static void server_client_set_title(struct client *);
42static void server_client_reset_state(struct client *);
43static int server_client_assume_paste(struct session *);
44static void server_client_clear_overlay(struct client *);
45static void server_client_resize_event(int, short, void *);
46
47static void server_client_dispatch(struct imsg *, void *);
48static void server_client_dispatch_command(struct client *, struct imsg *);
49static void server_client_dispatch_identify(struct client *, struct imsg *);
50static void server_client_dispatch_shell(struct client *);
51static void server_client_dispatch_write_ready(struct client *,
52 struct imsg *);
53static void server_client_dispatch_read_data(struct client *,
54 struct imsg *);
55static void server_client_dispatch_read_done(struct client *,
56 struct imsg *);
57
58/* Number of attached clients. */
59u_int
60server_client_how_many(void)
61{
62 struct client *c;
63 u_int n;
64
65 n = 0;
66 TAILQ_FOREACH(c, &clients, entry) {
67 if (c->session != NULL && (~c->flags & CLIENT_DETACHING))
68 n++;
69 }
70 return (n);
71}
72
73/* Overlay timer callback. */
74static void
75server_client_overlay_timer(__unused int fd, __unused short events, void *data)
76{
77 server_client_clear_overlay(data);
78}
79
80/* Set an overlay on client. */
81void
82server_client_set_overlay(struct client *c, u_int delay, overlay_draw_cb drawcb,
83 overlay_key_cb keycb, overlay_free_cb freecb, void *data)
84{
85 struct timeval tv;
86
87 if (c->overlay_draw != NULL)
88 server_client_clear_overlay(c);
89
90 tv.tv_sec = delay / 1000;
91 tv.tv_usec = (delay % 1000) * 1000L;
92
93 if (event_initialized(&c->overlay_timer))
94 evtimer_del(&c->overlay_timer);
95 evtimer_set(&c->overlay_timer, server_client_overlay_timer, c);
96 if (delay != 0)
97 evtimer_add(&c->overlay_timer, &tv);
98
99 c->overlay_draw = drawcb;
100 c->overlay_key = keycb;
101 c->overlay_free = freecb;
102 c->overlay_data = data;
103
104 c->tty.flags |= (TTY_FREEZE|TTY_NOCURSOR);
105 server_redraw_client(c);
106}
107
108/* Clear overlay mode on client. */
109static void
110server_client_clear_overlay(struct client *c)
111{
112 if (c->overlay_draw == NULL)
113 return;
114
115 if (event_initialized(&c->overlay_timer))
116 evtimer_del(&c->overlay_timer);
117
118 if (c->overlay_free != NULL)
119 c->overlay_free(c);
120
121 c->overlay_draw = NULL;
122 c->overlay_key = NULL;
123
124 c->tty.flags &= ~(TTY_FREEZE|TTY_NOCURSOR);
125 server_redraw_client(c);
126}
127
128/* Check if this client is inside this server. */
129int
130server_client_check_nested(struct client *c)
131{
132 struct environ_entry *envent;
133 struct window_pane *wp;
134
135 envent = environ_find(c->environ, "TMUX");
136 if (envent == NULL || *envent->value == '\0')
137 return (0);
138
139 RB_FOREACH(wp, window_pane_tree, &all_window_panes) {
140 if (strcmp(wp->tty, c->ttyname) == 0)
141 return (1);
142 }
143 return (0);
144}
145
146/* Set client key table. */
147void
148server_client_set_key_table(struct client *c, const char *name)
149{
150 if (name == NULL)
151 name = server_client_get_key_table(c);
152
153 key_bindings_unref_table(c->keytable);
154 c->keytable = key_bindings_get_table(name, 1);
155 c->keytable->references++;
156}
157
158/* Get default key table. */
159const char *
160server_client_get_key_table(struct client *c)
161{
162 struct session *s = c->session;
163 const char *name;
164
165 if (s == NULL)
166 return ("root");
167
168 name = options_get_string(s->options, "key-table");
169 if (*name == '\0')
170 return ("root");
171 return (name);
172}
173
174/* Is this table the default key table? */
175static int
176server_client_is_default_key_table(struct client *c, struct key_table *table)
177{
178 return (strcmp(table->name, server_client_get_key_table(c)) == 0);
179}
180
181/* Create a new client. */
182struct client *
183server_client_create(int fd)
184{
185 struct client *c;
186
187 setblocking(fd, 0);
188
189 c = xcalloc(1, sizeof *c);
190 c->references = 1;
191 c->peer = proc_add_peer(server_proc, fd, server_client_dispatch, c);
192
193 if (gettimeofday(&c->creation_time, NULL) != 0)
194 fatal("gettimeofday failed");
195 memcpy(&c->activity_time, &c->creation_time, sizeof c->activity_time);
196
197 c->environ = environ_create();
198
199 c->fd = -1;
200 c->cwd = NULL;
201
202 TAILQ_INIT(&c->queue);
203
204 c->tty.fd = -1;
205 c->title = NULL;
206
207 c->session = NULL;
208 c->last_session = NULL;
209
210 c->tty.sx = 80;
211 c->tty.sy = 24;
212
213 status_init(c);
214
215 c->message_string = NULL;
216 TAILQ_INIT(&c->message_log);
217
218 c->prompt_string = NULL;
219 c->prompt_buffer = NULL;
220 c->prompt_index = 0;
221
222 RB_INIT(&c->files);
223
224 c->flags |= CLIENT_FOCUSED;
225
226 c->keytable = key_bindings_get_table("root", 1);
227 c->keytable->references++;
228
229 evtimer_set(&c->repeat_timer, server_client_repeat_timer, c);
230 evtimer_set(&c->click_timer, server_client_click_timer, c);
231
232 TAILQ_INSERT_TAIL(&clients, c, entry);
233 log_debug("new client %p", c);
234 return (c);
235}
236
237/* Open client terminal if needed. */
238int
239server_client_open(struct client *c, char **cause)
240{
241 if (c->flags & CLIENT_CONTROL)
242 return (0);
243
244 if (strcmp(c->ttyname, "/dev/tty") == 0) {
245 *cause = xstrdup("can't use /dev/tty");
246 return (-1);
247 }
248
249 if (!(c->flags & CLIENT_TERMINAL)) {
250 *cause = xstrdup("not a terminal");
251 return (-1);
252 }
253
254 if (tty_open(&c->tty, cause) != 0)
255 return (-1);
256
257 return (0);
258}
259
260/* Lost a client. */
261void
262server_client_lost(struct client *c)
263{
264 struct message_entry *msg, *msg1;
265 struct client_file *cf;
266
267 c->flags |= CLIENT_DEAD;
268
269 server_client_clear_overlay(c);
270 status_prompt_clear(c);
271 status_message_clear(c);
272
273 RB_FOREACH(cf, client_files, &c->files) {
274 cf->error = EINTR;
275 file_fire_done(cf);
276 }
277
278 TAILQ_REMOVE(&clients, c, entry);
279 log_debug("lost client %p", c);
280
281 /*
282 * If CLIENT_TERMINAL hasn't been set, then tty_init hasn't been called
283 * and tty_free might close an unrelated fd.
284 */
285 if (c->flags & CLIENT_TERMINAL)
286 tty_free(&c->tty);
287 free(c->ttyname);
288 free(c->term);
289
290 status_free(c);
291
292 free(c->title);
293 free((void *)c->cwd);
294
295 evtimer_del(&c->repeat_timer);
296 evtimer_del(&c->click_timer);
297
298 key_bindings_unref_table(c->keytable);
299
300 free(c->message_string);
301 if (event_initialized(&c->message_timer))
302 evtimer_del(&c->message_timer);
303 TAILQ_FOREACH_SAFE(msg, &c->message_log, entry, msg1) {
304 free(msg->msg);
305 TAILQ_REMOVE(&c->message_log, msg, entry);
306 free(msg);
307 }
308
309 free(c->prompt_saved);
310 free(c->prompt_string);
311 free(c->prompt_buffer);
312
313 format_lost_client(c);
314 environ_free(c->environ);
315
316 proc_remove_peer(c->peer);
317 c->peer = NULL;
318
319 server_client_unref(c);
320
321 server_add_accept(0); /* may be more file descriptors now */
322
323 recalculate_sizes();
324 server_check_unattached();
325 server_update_socket();
326}
327
328/* Remove reference from a client. */
329void
330server_client_unref(struct client *c)
331{
332 log_debug("unref client %p (%d references)", c, c->references);
333
334 c->references--;
335 if (c->references == 0)
336 event_once(-1, EV_TIMEOUT, server_client_free, c, NULL);
337}
338
339/* Free dead client. */
340static void
341server_client_free(__unused int fd, __unused short events, void *arg)
342{
343 struct client *c = arg;
344
345 log_debug("free client %p (%d references)", c, c->references);
346
347 if (!TAILQ_EMPTY(&c->queue))
348 fatalx("queue not empty");
349
350 if (c->references == 0) {
351 free((void *)c->name);
352 free(c);
353 }
354}
355
356/* Suspend a client. */
357void
358server_client_suspend(struct client *c)
359{
360 struct session *s = c->session;
361
362 if (s == NULL || (c->flags & CLIENT_DETACHING))
363 return;
364
365 tty_stop_tty(&c->tty);
366 c->flags |= CLIENT_SUSPENDED;
367 proc_send(c->peer, MSG_SUSPEND, -1, NULL, 0);
368}
369
370/* Detach a client. */
371void
372server_client_detach(struct client *c, enum msgtype msgtype)
373{
374 struct session *s = c->session;
375
376 if (s == NULL || (c->flags & CLIENT_DETACHING))
377 return;
378
379 c->flags |= CLIENT_DETACHING;
380 notify_client("client-detached", c);
381 proc_send(c->peer, msgtype, -1, s->name, strlen(s->name) + 1);
382}
383
384/* Execute command to replace a client. */
385void
386server_client_exec(struct client *c, const char *cmd)
387{
388 struct session *s = c->session;
389 char *msg;
390 const char *shell;
391 size_t cmdsize, shellsize;
392
393 if (*cmd == '\0')
394 return;
395 cmdsize = strlen(cmd) + 1;
396
397 if (s != NULL)
398 shell = options_get_string(s->options, "default-shell");
399 else
400 shell = options_get_string(global_s_options, "default-shell");
401 shellsize = strlen(shell) + 1;
402
403 msg = xmalloc(cmdsize + shellsize);
404 memcpy(msg, cmd, cmdsize);
405 memcpy(msg + cmdsize, shell, shellsize);
406
407 proc_send(c->peer, MSG_EXEC, -1, msg, cmdsize + shellsize);
408 free(msg);
409}
410
411/* Check for mouse keys. */
412static key_code
413server_client_check_mouse(struct client *c, struct key_event *event)
414{
415 struct mouse_event *m = &event->m;
416 struct session *s = c->session;
417 struct winlink *wl;
418 struct window_pane *wp;
419 u_int x, y, b, sx, sy, px, py;
420 int flag;
421 key_code key;
422 struct timeval tv;
423 struct style_range *sr;
424 enum { NOTYPE,
425 MOVE,
426 DOWN,
427 UP,
428 DRAG,
429 WHEEL,
430 DOUBLE,
431 TRIPLE } type = NOTYPE;
432 enum { NOWHERE,
433 PANE,
434 STATUS,
435 STATUS_LEFT,
436 STATUS_RIGHT,
437 STATUS_DEFAULT,
438 BORDER } where = NOWHERE;
439
440 log_debug("%s mouse %02x at %u,%u (last %u,%u) (%d)", c->name, m->b,
441 m->x, m->y, m->lx, m->ly, c->tty.mouse_drag_flag);
442
443 /* What type of event is this? */
444 if ((m->sgr_type != ' ' &&
445 MOUSE_DRAG(m->sgr_b) &&
446 MOUSE_BUTTONS(m->sgr_b) == 3) ||
447 (m->sgr_type == ' ' &&
448 MOUSE_DRAG(m->b) &&
449 MOUSE_BUTTONS(m->b) == 3 &&
450 MOUSE_BUTTONS(m->lb) == 3)) {
451 type = MOVE;
452 x = m->x, y = m->y, b = 0;
453 log_debug("move at %u,%u", x, y);
454 } else if (MOUSE_DRAG(m->b)) {
455 type = DRAG;
456 if (c->tty.mouse_drag_flag) {
457 x = m->x, y = m->y, b = m->b;
458 if (x == m->lx && y == m->ly)
459 return (KEYC_UNKNOWN);
460 log_debug("drag update at %u,%u", x, y);
461 } else {
462 x = m->lx, y = m->ly, b = m->lb;
463 log_debug("drag start at %u,%u", x, y);
464 }
465 } else if (MOUSE_WHEEL(m->b)) {
466 type = WHEEL;
467 x = m->x, y = m->y, b = m->b;
468 log_debug("wheel at %u,%u", x, y);
469 } else if (MOUSE_RELEASE(m->b)) {
470 type = UP;
471 x = m->x, y = m->y, b = m->lb;
472 log_debug("up at %u,%u", x, y);
473 } else {
474 if (c->flags & CLIENT_DOUBLECLICK) {
475 evtimer_del(&c->click_timer);
476 c->flags &= ~CLIENT_DOUBLECLICK;
477 if (m->b == c->click_button) {
478 type = DOUBLE;
479 x = m->x, y = m->y, b = m->b;
480 log_debug("double-click at %u,%u", x, y);
481 flag = CLIENT_TRIPLECLICK;
482 goto add_timer;
483 }
484 } else if (c->flags & CLIENT_TRIPLECLICK) {
485 evtimer_del(&c->click_timer);
486 c->flags &= ~CLIENT_TRIPLECLICK;
487 if (m->b == c->click_button) {
488 type = TRIPLE;
489 x = m->x, y = m->y, b = m->b;
490 log_debug("triple-click at %u,%u", x, y);
491 goto have_event;
492 }
493 }
494
495 type = DOWN;
496 x = m->x, y = m->y, b = m->b;
497 log_debug("down at %u,%u", x, y);
498 flag = CLIENT_DOUBLECLICK;
499
500 add_timer:
501 if (KEYC_CLICK_TIMEOUT != 0) {
502 c->flags |= flag;
503 c->click_button = m->b;
504
505 tv.tv_sec = KEYC_CLICK_TIMEOUT / 1000;
506 tv.tv_usec = (KEYC_CLICK_TIMEOUT % 1000) * 1000L;
507 evtimer_del(&c->click_timer);
508 evtimer_add(&c->click_timer, &tv);
509 }
510 }
511
512have_event:
513 if (type == NOTYPE)
514 return (KEYC_UNKNOWN);
515
516 /* Save the session. */
517 m->s = s->id;
518 m->w = -1;
519
520 /* Is this on the status line? */
521 m->statusat = status_at_line(c);
522 m->statuslines = status_line_size(c);
523 if (m->statusat != -1 &&
524 y >= (u_int)m->statusat &&
525 y < m->statusat + m->statuslines) {
526 sr = status_get_range(c, x, y - m->statusat);
527 if (sr == NULL) {
528 where = STATUS_DEFAULT;
529 } else {
530 switch (sr->type) {
531 case STYLE_RANGE_NONE:
532 return (KEYC_UNKNOWN);
533 case STYLE_RANGE_LEFT:
534 where = STATUS_LEFT;
535 break;
536 case STYLE_RANGE_RIGHT:
537 where = STATUS_RIGHT;
538 break;
539 case STYLE_RANGE_WINDOW:
540 wl = winlink_find_by_index(&s->windows,
541 sr->argument);
542 if (wl == NULL)
543 return (KEYC_UNKNOWN);
544 m->w = wl->window->id;
545
546 where = STATUS;
547 break;
548 }
549 }
550 }
551
552 /* Not on status line. Adjust position and check for border or pane. */
553 if (where == NOWHERE) {
554 px = x;
555 if (m->statusat == 0 && y >= m->statuslines)
556 py = y - m->statuslines;
557 else if (m->statusat > 0 && y >= (u_int)m->statusat)
558 py = m->statusat - 1;
559 else
560 py = y;
561
562 tty_window_offset(&c->tty, &m->ox, &m->oy, &sx, &sy);
563 log_debug("mouse window @%u at %u,%u (%ux%u)",
564 s->curw->window->id, m->ox, m->oy, sx, sy);
565 if (px > sx || py > sy)
566 return (KEYC_UNKNOWN);
567 px = px + m->ox;
568 py = py + m->oy;
569
570 /* Try the pane borders if not zoomed. */
571 if (~s->curw->window->flags & WINDOW_ZOOMED) {
572 TAILQ_FOREACH(wp, &s->curw->window->panes, entry) {
573 if ((wp->xoff + wp->sx == px &&
574 wp->yoff <= 1 + py &&
575 wp->yoff + wp->sy >= py) ||
576 (wp->yoff + wp->sy == py &&
577 wp->xoff <= 1 + px &&
578 wp->xoff + wp->sx >= px))
579 break;
580 }
581 if (wp != NULL)
582 where = BORDER;
583 }
584
585 /* Otherwise try inside the pane. */
586 if (where == NOWHERE) {
587 wp = window_get_active_at(s->curw->window, px, py);
588 if (wp != NULL)
589 where = PANE;
590 }
591
592 if (where == NOWHERE)
593 return (KEYC_UNKNOWN);
594 if (where == PANE)
595 log_debug("mouse %u,%u on pane %%%u", x, y, wp->id);
596 else if (where == BORDER)
597 log_debug("mouse on pane %%%u border", wp->id);
598 m->wp = wp->id;
599 m->w = wp->window->id;
600 } else
601 m->wp = -1;
602
603 /* Stop dragging if needed. */
604 if (type != DRAG && type != WHEEL && c->tty.mouse_drag_flag) {
605 if (c->tty.mouse_drag_release != NULL)
606 c->tty.mouse_drag_release(c, m);
607
608 c->tty.mouse_drag_update = NULL;
609 c->tty.mouse_drag_release = NULL;
610
611 /*
612 * End a mouse drag by passing a MouseDragEnd key corresponding
613 * to the button that started the drag.
614 */
615 switch (c->tty.mouse_drag_flag) {
616 case 1:
617 if (where == PANE)
618 key = KEYC_MOUSEDRAGEND1_PANE;
619 if (where == STATUS)
620 key = KEYC_MOUSEDRAGEND1_STATUS;
621 if (where == STATUS_LEFT)
622 key = KEYC_MOUSEDRAGEND1_STATUS_LEFT;
623 if (where == STATUS_RIGHT)
624 key = KEYC_MOUSEDRAGEND1_STATUS_RIGHT;
625 if (where == STATUS_DEFAULT)
626 key = KEYC_MOUSEDRAGEND1_STATUS_DEFAULT;
627 if (where == BORDER)
628 key = KEYC_MOUSEDRAGEND1_BORDER;
629 break;
630 case 2:
631 if (where == PANE)
632 key = KEYC_MOUSEDRAGEND2_PANE;
633 if (where == STATUS)
634 key = KEYC_MOUSEDRAGEND2_STATUS;
635 if (where == STATUS_LEFT)
636 key = KEYC_MOUSEDRAGEND2_STATUS_LEFT;
637 if (where == STATUS_RIGHT)
638 key = KEYC_MOUSEDRAGEND2_STATUS_RIGHT;
639 if (where == STATUS_DEFAULT)
640 key = KEYC_MOUSEDRAGEND2_STATUS_DEFAULT;
641 if (where == BORDER)
642 key = KEYC_MOUSEDRAGEND2_BORDER;
643 break;
644 case 3:
645 if (where == PANE)
646 key = KEYC_MOUSEDRAGEND3_PANE;
647 if (where == STATUS)
648 key = KEYC_MOUSEDRAGEND3_STATUS;
649 if (where == STATUS_LEFT)
650 key = KEYC_MOUSEDRAGEND3_STATUS_LEFT;
651 if (where == STATUS_RIGHT)
652 key = KEYC_MOUSEDRAGEND3_STATUS_RIGHT;
653 if (where == STATUS_DEFAULT)
654 key = KEYC_MOUSEDRAGEND3_STATUS_DEFAULT;
655 if (where == BORDER)
656 key = KEYC_MOUSEDRAGEND3_BORDER;
657 break;
658 default:
659 key = KEYC_MOUSE;
660 break;
661 }
662 c->tty.mouse_drag_flag = 0;
663 goto out;
664 }
665
666 /* Convert to a key binding. */
667 key = KEYC_UNKNOWN;
668 switch (type) {
669 case NOTYPE:
670 break;
671 case MOVE:
672 if (where == PANE)
673 key = KEYC_MOUSEMOVE_PANE;
674 if (where == STATUS)
675 key = KEYC_MOUSEMOVE_STATUS;
676 if (where == STATUS_LEFT)
677 key = KEYC_MOUSEMOVE_STATUS_LEFT;
678 if (where == STATUS_RIGHT)
679 key = KEYC_MOUSEMOVE_STATUS_RIGHT;
680 if (where == STATUS_DEFAULT)
681 key = KEYC_MOUSEMOVE_STATUS_DEFAULT;
682 if (where == BORDER)
683 key = KEYC_MOUSEMOVE_BORDER;
684 break;
685 case DRAG:
686 if (c->tty.mouse_drag_update != NULL)
687 key = KEYC_DRAGGING;
688 else {
689 switch (MOUSE_BUTTONS(b)) {
690 case 0:
691 if (where == PANE)
692 key = KEYC_MOUSEDRAG1_PANE;
693 if (where == STATUS)
694 key = KEYC_MOUSEDRAG1_STATUS;
695 if (where == STATUS_LEFT)
696 key = KEYC_MOUSEDRAG1_STATUS_LEFT;
697 if (where == STATUS_RIGHT)
698 key = KEYC_MOUSEDRAG1_STATUS_RIGHT;
699 if (where == STATUS_DEFAULT)
700 key = KEYC_MOUSEDRAG1_STATUS_DEFAULT;
701 if (where == BORDER)
702 key = KEYC_MOUSEDRAG1_BORDER;
703 break;
704 case 1:
705 if (where == PANE)
706 key = KEYC_MOUSEDRAG2_PANE;
707 if (where == STATUS)
708 key = KEYC_MOUSEDRAG2_STATUS;
709 if (where == STATUS_LEFT)
710 key = KEYC_MOUSEDRAG2_STATUS_LEFT;
711 if (where == STATUS_RIGHT)
712 key = KEYC_MOUSEDRAG2_STATUS_RIGHT;
713 if (where == STATUS_DEFAULT)
714 key = KEYC_MOUSEDRAG2_STATUS_DEFAULT;
715 if (where == BORDER)
716 key = KEYC_MOUSEDRAG2_BORDER;
717 break;
718 case 2:
719 if (where == PANE)
720 key = KEYC_MOUSEDRAG3_PANE;
721 if (where == STATUS)
722 key = KEYC_MOUSEDRAG3_STATUS;
723 if (where == STATUS_LEFT)
724 key = KEYC_MOUSEDRAG3_STATUS_LEFT;
725 if (where == STATUS_RIGHT)
726 key = KEYC_MOUSEDRAG3_STATUS_RIGHT;
727 if (where == STATUS_DEFAULT)
728 key = KEYC_MOUSEDRAG3_STATUS_DEFAULT;
729 if (where == BORDER)
730 key = KEYC_MOUSEDRAG3_BORDER;
731 break;
732 }
733 }
734
735 /*
736 * Begin a drag by setting the flag to a non-zero value that
737 * corresponds to the mouse button in use.
738 */
739 c->tty.mouse_drag_flag = MOUSE_BUTTONS(b) + 1;
740 break;
741 case WHEEL:
742 if (MOUSE_BUTTONS(b) == MOUSE_WHEEL_UP) {
743 if (where == PANE)
744 key = KEYC_WHEELUP_PANE;
745 if (where == STATUS)
746 key = KEYC_WHEELUP_STATUS;
747 if (where == STATUS_LEFT)
748 key = KEYC_WHEELUP_STATUS_LEFT;
749 if (where == STATUS_RIGHT)
750 key = KEYC_WHEELUP_STATUS_RIGHT;
751 if (where == STATUS_DEFAULT)
752 key = KEYC_WHEELUP_STATUS_DEFAULT;
753 if (where == BORDER)
754 key = KEYC_WHEELUP_BORDER;
755 } else {
756 if (where == PANE)
757 key = KEYC_WHEELDOWN_PANE;
758 if (where == STATUS)
759 key = KEYC_WHEELDOWN_STATUS;
760 if (where == STATUS_LEFT)
761 key = KEYC_WHEELDOWN_STATUS_LEFT;
762 if (where == STATUS_RIGHT)
763 key = KEYC_WHEELDOWN_STATUS_RIGHT;
764 if (where == STATUS_DEFAULT)
765 key = KEYC_WHEELDOWN_STATUS_DEFAULT;
766 if (where == BORDER)
767 key = KEYC_WHEELDOWN_BORDER;
768 }
769 break;
770 case UP:
771 switch (MOUSE_BUTTONS(b)) {
772 case 0:
773 if (where == PANE)
774 key = KEYC_MOUSEUP1_PANE;
775 if (where == STATUS)
776 key = KEYC_MOUSEUP1_STATUS;
777 if (where == STATUS_LEFT)
778 key = KEYC_MOUSEUP1_STATUS_LEFT;
779 if (where == STATUS_RIGHT)
780 key = KEYC_MOUSEUP1_STATUS_RIGHT;
781 if (where == STATUS_DEFAULT)
782 key = KEYC_MOUSEUP1_STATUS_DEFAULT;
783 if (where == BORDER)
784 key = KEYC_MOUSEUP1_BORDER;
785 break;
786 case 1:
787 if (where == PANE)
788 key = KEYC_MOUSEUP2_PANE;
789 if (where == STATUS)
790 key = KEYC_MOUSEUP2_STATUS;
791 if (where == STATUS_LEFT)
792 key = KEYC_MOUSEUP2_STATUS_LEFT;
793 if (where == STATUS_RIGHT)
794 key = KEYC_MOUSEUP2_STATUS_RIGHT;
795 if (where == STATUS_DEFAULT)
796 key = KEYC_MOUSEUP2_STATUS_DEFAULT;
797 if (where == BORDER)
798 key = KEYC_MOUSEUP2_BORDER;
799 break;
800 case 2:
801 if (where == PANE)
802 key = KEYC_MOUSEUP3_PANE;
803 if (where == STATUS)
804 key = KEYC_MOUSEUP3_STATUS;
805 if (where == STATUS_LEFT)
806 key = KEYC_MOUSEUP3_STATUS_LEFT;
807 if (where == STATUS_RIGHT)
808 key = KEYC_MOUSEUP3_STATUS_RIGHT;
809 if (where == STATUS_DEFAULT)
810 key = KEYC_MOUSEUP3_STATUS_DEFAULT;
811 if (where == BORDER)
812 key = KEYC_MOUSEUP3_BORDER;
813 break;
814 }
815 break;
816 case DOWN:
817 switch (MOUSE_BUTTONS(b)) {
818 case 0:
819 if (where == PANE)
820 key = KEYC_MOUSEDOWN1_PANE;
821 if (where == STATUS)
822 key = KEYC_MOUSEDOWN1_STATUS;
823 if (where == STATUS_LEFT)
824 key = KEYC_MOUSEDOWN1_STATUS_LEFT;
825 if (where == STATUS_RIGHT)
826 key = KEYC_MOUSEDOWN1_STATUS_RIGHT;
827 if (where == STATUS_DEFAULT)
828 key = KEYC_MOUSEDOWN1_STATUS_DEFAULT;
829 if (where == BORDER)
830 key = KEYC_MOUSEDOWN1_BORDER;
831 break;
832 case 1:
833 if (where == PANE)
834 key = KEYC_MOUSEDOWN2_PANE;
835 if (where == STATUS)
836 key = KEYC_MOUSEDOWN2_STATUS;
837 if (where == STATUS_LEFT)
838 key = KEYC_MOUSEDOWN2_STATUS_LEFT;
839 if (where == STATUS_RIGHT)
840 key = KEYC_MOUSEDOWN2_STATUS_RIGHT;
841 if (where == STATUS_DEFAULT)
842 key = KEYC_MOUSEDOWN2_STATUS_DEFAULT;
843 if (where == BORDER)
844 key = KEYC_MOUSEDOWN2_BORDER;
845 break;
846 case 2:
847 if (where == PANE)
848 key = KEYC_MOUSEDOWN3_PANE;
849 if (where == STATUS)
850 key = KEYC_MOUSEDOWN3_STATUS;
851 if (where == STATUS_LEFT)
852 key = KEYC_MOUSEDOWN3_STATUS_LEFT;
853 if (where == STATUS_RIGHT)
854 key = KEYC_MOUSEDOWN3_STATUS_RIGHT;
855 if (where == STATUS_DEFAULT)
856 key = KEYC_MOUSEDOWN3_STATUS_DEFAULT;
857 if (where == BORDER)
858 key = KEYC_MOUSEDOWN3_BORDER;
859 break;
860 }
861 break;
862 case DOUBLE:
863 switch (MOUSE_BUTTONS(b)) {
864 case 0:
865 if (where == PANE)
866 key = KEYC_DOUBLECLICK1_PANE;
867 if (where == STATUS)
868 key = KEYC_DOUBLECLICK1_STATUS;
869 if (where == STATUS_LEFT)
870 key = KEYC_DOUBLECLICK1_STATUS_LEFT;
871 if (where == STATUS_RIGHT)
872 key = KEYC_DOUBLECLICK1_STATUS_RIGHT;
873 if (where == STATUS_DEFAULT)
874 key = KEYC_DOUBLECLICK1_STATUS_DEFAULT;
875 if (where == BORDER)
876 key = KEYC_DOUBLECLICK1_BORDER;
877 break;
878 case 1:
879 if (where == PANE)
880 key = KEYC_DOUBLECLICK2_PANE;
881 if (where == STATUS)
882 key = KEYC_DOUBLECLICK2_STATUS;
883 if (where == STATUS_LEFT)
884 key = KEYC_DOUBLECLICK2_STATUS_LEFT;
885 if (where == STATUS_RIGHT)
886 key = KEYC_DOUBLECLICK2_STATUS_RIGHT;
887 if (where == STATUS_DEFAULT)
888 key = KEYC_DOUBLECLICK2_STATUS_DEFAULT;
889 if (where == BORDER)
890 key = KEYC_DOUBLECLICK2_BORDER;
891 break;
892 case 2:
893 if (where == PANE)
894 key = KEYC_DOUBLECLICK3_PANE;
895 if (where == STATUS)
896 key = KEYC_DOUBLECLICK3_STATUS;
897 if (where == STATUS_LEFT)
898 key = KEYC_DOUBLECLICK3_STATUS_LEFT;
899 if (where == STATUS_RIGHT)
900 key = KEYC_DOUBLECLICK3_STATUS_RIGHT;
901 if (where == STATUS_DEFAULT)
902 key = KEYC_DOUBLECLICK3_STATUS_DEFAULT;
903 if (where == BORDER)
904 key = KEYC_DOUBLECLICK3_BORDER;
905 break;
906 }
907 break;
908 case TRIPLE:
909 switch (MOUSE_BUTTONS(b)) {
910 case 0:
911 if (where == PANE)
912 key = KEYC_TRIPLECLICK1_PANE;
913 if (where == STATUS)
914 key = KEYC_TRIPLECLICK1_STATUS;
915 if (where == STATUS_LEFT)
916 key = KEYC_TRIPLECLICK1_STATUS_LEFT;
917 if (where == STATUS_RIGHT)
918 key = KEYC_TRIPLECLICK1_STATUS_RIGHT;
919 if (where == STATUS_DEFAULT)
920 key = KEYC_TRIPLECLICK1_STATUS_DEFAULT;
921 if (where == BORDER)
922 key = KEYC_TRIPLECLICK1_BORDER;
923 break;
924 case 1:
925 if (where == PANE)
926 key = KEYC_TRIPLECLICK2_PANE;
927 if (where == STATUS)
928 key = KEYC_TRIPLECLICK2_STATUS;
929 if (where == STATUS_LEFT)
930 key = KEYC_TRIPLECLICK2_STATUS_LEFT;
931 if (where == STATUS_RIGHT)
932 key = KEYC_TRIPLECLICK2_STATUS_RIGHT;
933 if (where == STATUS_DEFAULT)
934 key = KEYC_TRIPLECLICK2_STATUS_DEFAULT;
935 if (where == BORDER)
936 key = KEYC_TRIPLECLICK2_BORDER;
937 break;
938 case 2:
939 if (where == PANE)
940 key = KEYC_TRIPLECLICK3_PANE;
941 if (where == STATUS)
942 key = KEYC_TRIPLECLICK3_STATUS;
943 if (where == STATUS_LEFT)
944 key = KEYC_TRIPLECLICK3_STATUS_LEFT;
945 if (where == STATUS_RIGHT)
946 key = KEYC_TRIPLECLICK3_STATUS_RIGHT;
947 if (where == STATUS_DEFAULT)
948 key = KEYC_TRIPLECLICK3_STATUS_DEFAULT;
949 if (where == BORDER)
950 key = KEYC_TRIPLECLICK3_BORDER;
951 break;
952 }
953 break;
954 }
955 if (key == KEYC_UNKNOWN)
956 return (KEYC_UNKNOWN);
957
958out:
959 /* Apply modifiers if any. */
960 if (b & MOUSE_MASK_META)
961 key |= KEYC_ESCAPE;
962 if (b & MOUSE_MASK_CTRL)
963 key |= KEYC_CTRL;
964 if (b & MOUSE_MASK_SHIFT)
965 key |= KEYC_SHIFT;
966
967 if (log_get_level() != 0)
968 log_debug("mouse key is %s", key_string_lookup_key (key));
969 return (key);
970}
971
972/* Is this fast enough to probably be a paste? */
973static int
974server_client_assume_paste(struct session *s)
975{
976 struct timeval tv;
977 int t;
978
979 if ((t = options_get_number(s->options, "assume-paste-time")) == 0)
980 return (0);
981
982 timersub(&s->activity_time, &s->last_activity_time, &tv);
983 if (tv.tv_sec == 0 && tv.tv_usec < t * 1000) {
984 log_debug("session %s pasting (flag %d)", s->name,
985 !!(s->flags & SESSION_PASTING));
986 if (s->flags & SESSION_PASTING)
987 return (1);
988 s->flags |= SESSION_PASTING;
989 return (0);
990 }
991 log_debug("session %s not pasting", s->name);
992 s->flags &= ~SESSION_PASTING;
993 return (0);
994}
995
996/* Has the latest client changed? */
997static void
998server_client_update_latest(struct client *c)
999{
1000 struct window *w;
1001
1002 if (c->session == NULL)
1003 return;
1004 w = c->session->curw->window;
1005
1006 if (w->latest == c)
1007 return;
1008 w->latest = c;
1009
1010 if (options_get_number(w->options, "window-size") == WINDOW_SIZE_LATEST)
1011 recalculate_size(w);
1012}
1013
1014/*
1015 * Handle data key input from client. This owns and can modify the key event it
1016 * is given and is responsible for freeing it.
1017 */
1018static enum cmd_retval
1019server_client_key_callback(struct cmdq_item *item, void *data)
1020{
1021 struct client *c = item->client;
1022 struct key_event *event = data;
1023 key_code key = event->key;
1024 struct mouse_event *m = &event->m;
1025 struct session *s = c->session;
1026 struct winlink *wl;
1027 struct window_pane *wp;
1028 struct window_mode_entry *wme;
1029 struct timeval tv;
1030 struct key_table *table, *first;
1031 struct key_binding *bd;
1032 int xtimeout, flags;
1033 struct cmd_find_state fs;
1034 key_code key0;
1035
1036 /* Check the client is good to accept input. */
1037 if (s == NULL || (c->flags & CLIENT_UNATTACHEDFLAGS))
1038 goto out;
1039 wl = s->curw;
1040
1041 /* Update the activity timer. */
1042 if (gettimeofday(&c->activity_time, NULL) != 0)
1043 fatal("gettimeofday failed");
1044 session_update_activity(s, &c->activity_time);
1045
1046 /* Check for mouse keys. */
1047 m->valid = 0;
1048 if (key == KEYC_MOUSE) {
1049 if (c->flags & CLIENT_READONLY)
1050 goto out;
1051 key = server_client_check_mouse(c, event);
1052 if (key == KEYC_UNKNOWN)
1053 goto out;
1054
1055 m->valid = 1;
1056 m->key = key;
1057
1058 /*
1059 * Mouse drag is in progress, so fire the callback (now that
1060 * the mouse event is valid).
1061 */
1062 if ((key & KEYC_MASK_KEY) == KEYC_DRAGGING) {
1063 c->tty.mouse_drag_update(c, m);
1064 goto out;
1065 }
1066 }
1067
1068 /* Find affected pane. */
1069 if (!KEYC_IS_MOUSE(key) || cmd_find_from_mouse(&fs, m, 0) != 0)
1070 cmd_find_from_session(&fs, s, 0);
1071 wp = fs.wp;
1072
1073 /* Forward mouse keys if disabled. */
1074 if (KEYC_IS_MOUSE(key) && !options_get_number(s->options, "mouse"))
1075 goto forward_key;
1076
1077 /* Treat everything as a regular key when pasting is detected. */
1078 if (!KEYC_IS_MOUSE(key) && server_client_assume_paste(s))
1079 goto forward_key;
1080
1081 /*
1082 * Work out the current key table. If the pane is in a mode, use
1083 * the mode table instead of the default key table.
1084 */
1085 if (server_client_is_default_key_table(c, c->keytable) &&
1086 wp != NULL &&
1087 (wme = TAILQ_FIRST(&wp->modes)) != NULL &&
1088 wme->mode->key_table != NULL)
1089 table = key_bindings_get_table(wme->mode->key_table(wme), 1);
1090 else
1091 table = c->keytable;
1092 first = table;
1093
1094table_changed:
1095 /*
1096 * The prefix always takes precedence and forces a switch to the prefix
1097 * table, unless we are already there.
1098 */
1099 key0 = (key & ~KEYC_XTERM);
1100 if ((key0 == (key_code)options_get_number(s->options, "prefix") ||
1101 key0 == (key_code)options_get_number(s->options, "prefix2")) &&
1102 strcmp(table->name, "prefix") != 0) {
1103 server_client_set_key_table(c, "prefix");
1104 server_status_client(c);
1105 goto out;
1106 }
1107 flags = c->flags;
1108
1109try_again:
1110 /* Log key table. */
1111 if (wp == NULL)
1112 log_debug("key table %s (no pane)", table->name);
1113 else
1114 log_debug("key table %s (pane %%%u)", table->name, wp->id);
1115 if (c->flags & CLIENT_REPEAT)
1116 log_debug("currently repeating");
1117
1118 /* Try to see if there is a key binding in the current table. */
1119 bd = key_bindings_get(table, key0);
1120 if (bd != NULL) {
1121 /*
1122 * Key was matched in this table. If currently repeating but a
1123 * non-repeating binding was found, stop repeating and try
1124 * again in the root table.
1125 */
1126 if ((c->flags & CLIENT_REPEAT) &&
1127 (~bd->flags & KEY_BINDING_REPEAT)) {
1128 log_debug("found in key table %s (not repeating)",
1129 table->name);
1130 server_client_set_key_table(c, NULL);
1131 first = table = c->keytable;
1132 c->flags &= ~CLIENT_REPEAT;
1133 server_status_client(c);
1134 goto table_changed;
1135 }
1136 log_debug("found in key table %s", table->name);
1137
1138 /*
1139 * Take a reference to this table to make sure the key binding
1140 * doesn't disappear.
1141 */
1142 table->references++;
1143
1144 /*
1145 * If this is a repeating key, start the timer. Otherwise reset
1146 * the client back to the root table.
1147 */
1148 xtimeout = options_get_number(s->options, "repeat-time");
1149 if (xtimeout != 0 && (bd->flags & KEY_BINDING_REPEAT)) {
1150 c->flags |= CLIENT_REPEAT;
1151
1152 tv.tv_sec = xtimeout / 1000;
1153 tv.tv_usec = (xtimeout % 1000) * 1000L;
1154 evtimer_del(&c->repeat_timer);
1155 evtimer_add(&c->repeat_timer, &tv);
1156 } else {
1157 c->flags &= ~CLIENT_REPEAT;
1158 server_client_set_key_table(c, NULL);
1159 }
1160 server_status_client(c);
1161
1162 /* Execute the key binding. */
1163 key_bindings_dispatch(bd, item, c, m, &fs);
1164 key_bindings_unref_table(table);
1165 goto out;
1166 }
1167
1168 /*
1169 * No match, try the ANY key.
1170 */
1171 if (key0 != KEYC_ANY) {
1172 key0 = KEYC_ANY;
1173 goto try_again;
1174 }
1175
1176 /*
1177 * No match in this table. If not in the root table or if repeating,
1178 * switch the client back to the root table and try again.
1179 */
1180 log_debug("not found in key table %s", table->name);
1181 if (!server_client_is_default_key_table(c, table) ||
1182 (c->flags & CLIENT_REPEAT)) {
1183 log_debug("trying in root table");
1184 server_client_set_key_table(c, NULL);
1185 table = c->keytable;
1186 if (c->flags & CLIENT_REPEAT)
1187 first = table;
1188 c->flags &= ~CLIENT_REPEAT;
1189 server_status_client(c);
1190 goto table_changed;
1191 }
1192
1193 /*
1194 * No match in the root table either. If this wasn't the first table
1195 * tried, don't pass the key to the pane.
1196 */
1197 if (first != table && (~flags & CLIENT_REPEAT)) {
1198 server_client_set_key_table(c, NULL);
1199 server_status_client(c);
1200 goto out;
1201 }
1202
1203forward_key:
1204 if (c->flags & CLIENT_READONLY)
1205 goto out;
1206 if (wp != NULL)
1207 window_pane_key(wp, c, s, wl, key, m);
1208
1209out:
1210 if (s != NULL)
1211 server_client_update_latest(c);
1212 free(event);
1213 return (CMD_RETURN_NORMAL);
1214}
1215
1216/* Handle a key event. */
1217int
1218server_client_handle_key(struct client *c, struct key_event *event)
1219{
1220 struct session *s = c->session;
1221 struct cmdq_item *item;
1222
1223 /* Check the client is good to accept input. */
1224 if (s == NULL || (c->flags & CLIENT_UNATTACHEDFLAGS))
1225 return (0);
1226
1227 /*
1228 * Key presses in overlay mode and the command prompt are a special
1229 * case. The queue might be blocked so they need to be processed
1230 * immediately rather than queued.
1231 */
1232 if (~c->flags & CLIENT_READONLY) {
1233 status_message_clear(c);
1234 if (c->prompt_string != NULL) {
1235 if (status_prompt_key(c, event->key) == 0)
1236 return (0);
1237 }
1238 if (c->overlay_key != NULL) {
1239 switch (c->overlay_key(c, event)) {
1240 case 0:
1241 return (0);
1242 case 1:
1243 server_client_clear_overlay(c);
1244 return (0);
1245 }
1246 }
1247 server_client_clear_overlay(c);
1248 }
1249
1250 /*
1251 * Add the key to the queue so it happens after any commands queued by
1252 * previous keys.
1253 */
1254 item = cmdq_get_callback(server_client_key_callback, event);
1255 cmdq_append(c, item);
1256 return (1);
1257}
1258
1259/* Client functions that need to happen every loop. */
1260void
1261server_client_loop(void)
1262{
1263 struct client *c;
1264 struct window *w;
1265 struct window_pane *wp;
1266 struct winlink *wl;
1267 struct session *s;
1268 int focus, attached, resize;
1269
1270 TAILQ_FOREACH(c, &clients, entry) {
1271 server_client_check_exit(c);
1272 if (c->session != NULL) {
1273 server_client_check_redraw(c);
1274 server_client_reset_state(c);
1275 }
1276 }
1277
1278 /*
1279 * Any windows will have been redrawn as part of clients, so clear
1280 * their flags now. Also check pane focus and resize.
1281 *
1282 * As an optimization, panes in windows that are in an attached session
1283 * but not the current window are not resized (this reduces the amount
1284 * of work needed when, for example, resizing an X terminal a
1285 * lot). Windows in no attached session are resized immediately since
1286 * that is likely to have come from a command like split-window and be
1287 * what the user wanted.
1288 */
1289 focus = options_get_number(global_options, "focus-events");
1290 RB_FOREACH(w, windows, &windows) {
1291 attached = resize = 0;
1292 TAILQ_FOREACH(wl, &w->winlinks, wentry) {
1293 s = wl->session;
1294 if (s->attached != 0)
1295 attached = 1;
1296 if (s->attached != 0 && s->curw == wl) {
1297 resize = 1;
1298 break;
1299 }
1300 }
1301 if (!attached)
1302 resize = 1;
1303 TAILQ_FOREACH(wp, &w->panes, entry) {
1304 if (wp->fd != -1) {
1305 if (focus)
1306 server_client_check_focus(wp);
1307 if (resize)
1308 server_client_check_resize(wp);
1309 }
1310 wp->flags &= ~PANE_REDRAW;
1311 }
1312 check_window_name(w);
1313 }
1314}
1315
1316/* Check if we need to force a resize. */
1317static int
1318server_client_resize_force(struct window_pane *wp)
1319{
1320 struct timeval tv = { .tv_usec = 100000 };
1321
1322 /*
1323 * If we are resizing to the same size as when we entered the loop
1324 * (that is, to the same size the application currently thinks it is),
1325 * tmux may have gone through several resizes internally and thrown
1326 * away parts of the screen. So we need the application to actually
1327 * redraw even though its final size has not changed.
1328 */
1329
1330 if (wp->flags & PANE_RESIZEFORCE) {
1331 wp->flags &= ~PANE_RESIZEFORCE;
1332 return (0);
1333 }
1334
1335 if (wp->sx != wp->osx ||
1336 wp->sy != wp->osy ||
1337 wp->sx <= 1 ||
1338 wp->sy <= 1)
1339 return (0);
1340
1341 log_debug("%s: %%%u forcing resize", __func__, wp->id);
1342 window_pane_send_resize(wp, -1);
1343
1344 evtimer_add(&wp->resize_timer, &tv);
1345 wp->flags |= PANE_RESIZEFORCE;
1346 return (1);
1347}
1348
1349/* Resize a pane. */
1350static void
1351server_client_resize_pane(struct window_pane *wp)
1352{
1353 log_debug("%s: %%%u resize to %u,%u", __func__, wp->id, wp->sx, wp->sy);
1354 window_pane_send_resize(wp, 0);
1355
1356 wp->flags &= ~PANE_RESIZE;
1357
1358 wp->osx = wp->sx;
1359 wp->osy = wp->sy;
1360}
1361
1362/* Start the resize timer. */
1363static void
1364server_client_start_resize_timer(struct window_pane *wp)
1365{
1366 struct timeval tv = { .tv_usec = 250000 };
1367
1368 if (!evtimer_pending(&wp->resize_timer, NULL))
1369 evtimer_add(&wp->resize_timer, &tv);
1370}
1371
1372/* Resize timer event. */
1373static void
1374server_client_resize_event(__unused int fd, __unused short events, void *data)
1375{
1376 struct window_pane *wp = data;
1377
1378 evtimer_del(&wp->resize_timer);
1379
1380 if (~wp->flags & PANE_RESIZE)
1381 return;
1382 log_debug("%s: %%%u timer fired (was%s resized)", __func__, wp->id,
1383 (wp->flags & PANE_RESIZED) ? "" : " not");
1384
1385 if (wp->saved_grid == NULL && (wp->flags & PANE_RESIZED)) {
1386 log_debug("%s: %%%u deferring timer", __func__, wp->id);
1387 server_client_start_resize_timer(wp);
1388 } else if (!server_client_resize_force(wp)) {
1389 log_debug("%s: %%%u resizing pane", __func__, wp->id);
1390 server_client_resize_pane(wp);
1391 }
1392 wp->flags &= ~PANE_RESIZED;
1393}
1394
1395/* Check if pane should be resized. */
1396static void
1397server_client_check_resize(struct window_pane *wp)
1398{
1399 if (~wp->flags & PANE_RESIZE)
1400 return;
1401
1402 if (!event_initialized(&wp->resize_timer))
1403 evtimer_set(&wp->resize_timer, server_client_resize_event, wp);
1404
1405 if (!evtimer_pending(&wp->resize_timer, NULL)) {
1406 log_debug("%s: %%%u starting timer", __func__, wp->id);
1407 server_client_resize_pane(wp);
1408 server_client_start_resize_timer(wp);
1409 } else
1410 log_debug("%s: %%%u timer running", __func__, wp->id);
1411}
1412
1413/* Check whether pane should be focused. */
1414static void
1415server_client_check_focus(struct window_pane *wp)
1416{
1417 struct client *c;
1418 int push;
1419
1420 /* Do we need to push the focus state? */
1421 push = wp->flags & PANE_FOCUSPUSH;
1422 wp->flags &= ~PANE_FOCUSPUSH;
1423
1424 /* If we're not the active pane in our window, we're not focused. */
1425 if (wp->window->active != wp)
1426 goto not_focused;
1427
1428 /* If we're in a mode, we're not focused. */
1429 if (wp->screen != &wp->base)
1430 goto not_focused;
1431
1432 /*
1433 * If our window is the current window in any focused clients with an
1434 * attached session, we're focused.
1435 */
1436 TAILQ_FOREACH(c, &clients, entry) {
1437 if (c->session == NULL || !(c->flags & CLIENT_FOCUSED))
1438 continue;
1439 if (c->session->attached == 0)
1440 continue;
1441
1442 if (c->session->curw->window == wp->window)
1443 goto focused;
1444 }
1445
1446not_focused:
1447 if (push || (wp->flags & PANE_FOCUSED)) {
1448 if (wp->base.mode & MODE_FOCUSON)
1449 bufferevent_write(wp->event, "\033[O", 3);
1450 notify_pane("pane-focus-out", wp);
1451 }
1452 wp->flags &= ~PANE_FOCUSED;
1453 return;
1454
1455focused:
1456 if (push || !(wp->flags & PANE_FOCUSED)) {
1457 if (wp->base.mode & MODE_FOCUSON)
1458 bufferevent_write(wp->event, "\033[I", 3);
1459 notify_pane("pane-focus-in", wp);
1460 session_update_activity(c->session, NULL);
1461 }
1462 wp->flags |= PANE_FOCUSED;
1463}
1464
1465/*
1466 * Update cursor position and mode settings. The scroll region and attributes
1467 * are cleared when idle (waiting for an event) as this is the most likely time
1468 * a user may interrupt tmux, for example with ~^Z in ssh(1). This is a
1469 * compromise between excessive resets and likelihood of an interrupt.
1470 *
1471 * tty_region/tty_reset/tty_update_mode already take care of not resetting
1472 * things that are already in their default state.
1473 */
1474static void
1475server_client_reset_state(struct client *c)
1476{
1477 struct window *w = c->session->curw->window;
1478 struct window_pane *wp = w->active, *loop;
1479 struct screen *s = wp->screen;
1480 struct options *oo = c->session->options;
1481 int mode, cursor = 0;
1482 u_int cx = 0, cy = 0, ox, oy, sx, sy;
1483
1484 if (c->flags & (CLIENT_CONTROL|CLIENT_SUSPENDED))
1485 return;
1486 if (c->overlay_draw != NULL)
1487 return;
1488 mode = s->mode;
1489
1490 tty_region_off(&c->tty);
1491 tty_margin_off(&c->tty);
1492
1493 /* Move cursor to pane cursor and offset. */
1494 cursor = 0;
1495 tty_window_offset(&c->tty, &ox, &oy, &sx, &sy);
1496 if (wp->xoff + s->cx >= ox && wp->xoff + s->cx <= ox + sx &&
1497 wp->yoff + s->cy >= oy && wp->yoff + s->cy <= oy + sy) {
1498 cursor = 1;
1499
1500 cx = wp->xoff + s->cx - ox;
1501 cy = wp->yoff + s->cy - oy;
1502
1503 if (status_at_line(c) == 0)
1504 cy += status_line_size(c);
1505 }
1506 if (!cursor)
1507 mode &= ~MODE_CURSOR;
1508 tty_cursor(&c->tty, cx, cy);
1509
1510 /*
1511 * Set mouse mode if requested. To support dragging, always use button
1512 * mode.
1513 */
1514 if (options_get_number(oo, "mouse")) {
1515 mode &= ~ALL_MOUSE_MODES;
1516 TAILQ_FOREACH(loop, &w->panes, entry) {
1517 if (loop->screen->mode & MODE_MOUSE_ALL)
1518 mode |= MODE_MOUSE_ALL;
1519 }
1520 if (~mode & MODE_MOUSE_ALL)
1521 mode |= MODE_MOUSE_BUTTON;
1522 }
1523
1524 /* Clear bracketed paste mode if at the prompt. */
1525 if (c->prompt_string != NULL)
1526 mode &= ~MODE_BRACKETPASTE;
1527
1528 /* Set the terminal mode and reset attributes. */
1529 tty_update_mode(&c->tty, mode, s);
1530 tty_reset(&c->tty);
1531}
1532
1533/* Repeat time callback. */
1534static void
1535server_client_repeat_timer(__unused int fd, __unused short events, void *data)
1536{
1537 struct client *c = data;
1538
1539 if (c->flags & CLIENT_REPEAT) {
1540 server_client_set_key_table(c, NULL);
1541 c->flags &= ~CLIENT_REPEAT;
1542 server_status_client(c);
1543 }
1544}
1545
1546/* Double-click callback. */
1547static void
1548server_client_click_timer(__unused int fd, __unused short events, void *data)
1549{
1550 struct client *c = data;
1551
1552 c->flags &= ~(CLIENT_DOUBLECLICK|CLIENT_TRIPLECLICK);
1553}
1554
1555/* Check if client should be exited. */
1556static void
1557server_client_check_exit(struct client *c)
1558{
1559 struct client_file *cf;
1560
1561 if (~c->flags & CLIENT_EXIT)
1562 return;
1563 if (c->flags & CLIENT_EXITED)
1564 return;
1565
1566 RB_FOREACH(cf, client_files, &c->files) {
1567 if (EVBUFFER_LENGTH(cf->buffer) != 0)
1568 return;
1569 }
1570
1571 if (c->flags & CLIENT_ATTACHED)
1572 notify_client("client-detached", c);
1573 proc_send(c->peer, MSG_EXIT, -1, &c->retval, sizeof c->retval);
1574 c->flags |= CLIENT_EXITED;
1575}
1576
1577/* Redraw timer callback. */
1578static void
1579server_client_redraw_timer(__unused int fd, __unused short events,
1580 __unused void *data)
1581{
1582 log_debug("redraw timer fired");
1583}
1584
1585/* Check for client redraws. */
1586static void
1587server_client_check_redraw(struct client *c)
1588{
1589 struct session *s = c->session;
1590 struct tty *tty = &c->tty;
1591 struct window_pane *wp;
1592 int needed, flags;
1593 struct timeval tv = { .tv_usec = 1000 };
1594 static struct event ev;
1595 size_t left;
1596
1597 if (c->flags & (CLIENT_CONTROL|CLIENT_SUSPENDED))
1598 return;
1599 if (c->flags & CLIENT_ALLREDRAWFLAGS) {
1600 log_debug("%s: redraw%s%s%s%s", c->name,
1601 (c->flags & CLIENT_REDRAWWINDOW) ? " window" : "",
1602 (c->flags & CLIENT_REDRAWSTATUS) ? " status" : "",
1603 (c->flags & CLIENT_REDRAWBORDERS) ? " borders" : "",
1604 (c->flags & CLIENT_REDRAWOVERLAY) ? " overlay" : "");
1605 }
1606
1607 /*
1608 * If there is outstanding data, defer the redraw until it has been
1609 * consumed. We can just add a timer to get out of the event loop and
1610 * end up back here.
1611 */
1612 needed = 0;
1613 if (c->flags & CLIENT_ALLREDRAWFLAGS)
1614 needed = 1;
1615 else {
1616 TAILQ_FOREACH(wp, &c->session->curw->window->panes, entry) {
1617 if (wp->flags & PANE_REDRAW) {
1618 needed = 1;
1619 break;
1620 }
1621 }
1622 }
1623 if (needed && (left = EVBUFFER_LENGTH(tty->out)) != 0) {
1624 log_debug("%s: redraw deferred (%zu left)", c->name, left);
1625 if (!evtimer_initialized(&ev))
1626 evtimer_set(&ev, server_client_redraw_timer, NULL);
1627 if (!evtimer_pending(&ev, NULL)) {
1628 log_debug("redraw timer started");
1629 evtimer_add(&ev, &tv);
1630 }
1631
1632 /*
1633 * We may have got here for a single pane redraw, but force a
1634 * full redraw next time in case other panes have been updated.
1635 */
1636 c->flags |= CLIENT_ALLREDRAWFLAGS;
1637 return;
1638 } else if (needed)
1639 log_debug("%s: redraw needed", c->name);
1640
1641 flags = tty->flags & (TTY_BLOCK|TTY_FREEZE|TTY_NOCURSOR);
1642 tty->flags = (tty->flags & ~(TTY_BLOCK|TTY_FREEZE)) | TTY_NOCURSOR;
1643
1644 if (~c->flags & CLIENT_REDRAWWINDOW) {
1645 /*
1646 * If not redrawing the entire window, check whether each pane
1647 * needs to be redrawn.
1648 */
1649 TAILQ_FOREACH(wp, &c->session->curw->window->panes, entry) {
1650 if (wp->flags & PANE_REDRAW) {
1651 tty_update_mode(tty, tty->mode, NULL);
1652 screen_redraw_pane(c, wp);
1653 }
1654 }
1655 }
1656
1657 if (c->flags & CLIENT_ALLREDRAWFLAGS) {
1658 if (options_get_number(s->options, "set-titles"))
1659 server_client_set_title(c);
1660 screen_redraw_screen(c);
1661 }
1662
1663 tty->flags = (tty->flags & ~(TTY_FREEZE|TTY_NOCURSOR)) | flags;
1664 tty_update_mode(tty, tty->mode, NULL);
1665
1666 c->flags &= ~(CLIENT_ALLREDRAWFLAGS|CLIENT_STATUSFORCE);
1667
1668 if (needed) {
1669 /*
1670 * We would have deferred the redraw unless the output buffer
1671 * was empty, so we can record how many bytes the redraw
1672 * generated.
1673 */
1674 c->redraw = EVBUFFER_LENGTH(tty->out);
1675 log_debug("%s: redraw added %zu bytes", c->name, c->redraw);
1676 }
1677}
1678
1679/* Set client title. */
1680static void
1681server_client_set_title(struct client *c)
1682{
1683 struct session *s = c->session;
1684 const char *template;
1685 char *title;
1686 struct format_tree *ft;
1687
1688 template = options_get_string(s->options, "set-titles-string");
1689
1690 ft = format_create(c, NULL, FORMAT_NONE, 0);
1691 format_defaults(ft, c, NULL, NULL, NULL);
1692
1693 title = format_expand_time(ft, template);
1694 if (c->title == NULL || strcmp(title, c->title) != 0) {
1695 free(c->title);
1696 c->title = xstrdup(title);
1697 tty_set_title(&c->tty, c->title);
1698 }
1699 free(title);
1700
1701 format_free(ft);
1702}
1703
1704/* Dispatch message from client. */
1705static void
1706server_client_dispatch(struct imsg *imsg, void *arg)
1707{
1708 struct client *c = arg;
1709 ssize_t datalen;
1710 struct session *s;
1711
1712 if (c->flags & CLIENT_DEAD)
1713 return;
1714
1715 if (imsg == NULL) {
1716 server_client_lost(c);
1717 return;
1718 }
1719
1720 datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1721
1722 switch (imsg->hdr.type) {
1723 case MSG_IDENTIFY_FLAGS:
1724 case MSG_IDENTIFY_TERM:
1725 case MSG_IDENTIFY_TTYNAME:
1726 case MSG_IDENTIFY_CWD:
1727 case MSG_IDENTIFY_STDIN:
1728 case MSG_IDENTIFY_ENVIRON:
1729 case MSG_IDENTIFY_CLIENTPID:
1730 case MSG_IDENTIFY_DONE:
1731 server_client_dispatch_identify(c, imsg);
1732 break;
1733 case MSG_COMMAND:
1734 server_client_dispatch_command(c, imsg);
1735 break;
1736 case MSG_RESIZE:
1737 if (datalen != 0)
1738 fatalx("bad MSG_RESIZE size");
1739
1740 if (c->flags & CLIENT_CONTROL)
1741 break;
1742 server_client_update_latest(c);
1743 server_client_clear_overlay(c);
1744 tty_resize(&c->tty);
1745 recalculate_sizes();
1746 server_redraw_client(c);
1747 if (c->session != NULL)
1748 notify_client("client-resized", c);
1749 break;
1750 case MSG_EXITING:
1751 if (datalen != 0)
1752 fatalx("bad MSG_EXITING size");
1753
1754 c->session = NULL;
1755 tty_close(&c->tty);
1756 proc_send(c->peer, MSG_EXITED, -1, NULL, 0);
1757 break;
1758 case MSG_WAKEUP:
1759 case MSG_UNLOCK:
1760 if (datalen != 0)
1761 fatalx("bad MSG_WAKEUP size");
1762
1763 if (!(c->flags & CLIENT_SUSPENDED))
1764 break;
1765 c->flags &= ~CLIENT_SUSPENDED;
1766
1767 if (c->tty.fd == -1) /* exited in the meantime */
1768 break;
1769 s = c->session;
1770
1771 if (gettimeofday(&c->activity_time, NULL) != 0)
1772 fatal("gettimeofday failed");
1773
1774 tty_start_tty(&c->tty);
1775 server_redraw_client(c);
1776 recalculate_sizes();
1777
1778 if (s != NULL)
1779 session_update_activity(s, &c->activity_time);
1780 break;
1781 case MSG_SHELL:
1782 if (datalen != 0)
1783 fatalx("bad MSG_SHELL size");
1784
1785 server_client_dispatch_shell(c);
1786 break;
1787 case MSG_WRITE_READY:
1788 server_client_dispatch_write_ready(c, imsg);
1789 break;
1790 case MSG_READ:
1791 server_client_dispatch_read_data(c, imsg);
1792 break;
1793 case MSG_READ_DONE:
1794 server_client_dispatch_read_done(c, imsg);
1795 break;
1796 }
1797}
1798
1799/* Callback when command is done. */
1800static enum cmd_retval
1801server_client_command_done(struct cmdq_item *item, __unused void *data)
1802{
1803 struct client *c = item->client;
1804
1805 if (~c->flags & CLIENT_ATTACHED)
1806 c->flags |= CLIENT_EXIT;
1807 return (CMD_RETURN_NORMAL);
1808}
1809
1810/* Handle command message. */
1811static void
1812server_client_dispatch_command(struct client *c, struct imsg *imsg)
1813{
1814 struct msg_command data;
1815 char *buf;
1816 size_t len;
1817 int argc;
1818 char **argv, *cause;
1819 struct cmd_parse_result *pr;
1820
1821 if (c->flags & CLIENT_EXIT)
1822 return;
1823
1824 if (imsg->hdr.len - IMSG_HEADER_SIZE < sizeof data)
1825 fatalx("bad MSG_COMMAND size");
1826 memcpy(&data, imsg->data, sizeof data);
1827
1828 buf = (char *)imsg->data + sizeof data;
1829 len = imsg->hdr.len - IMSG_HEADER_SIZE - sizeof data;
1830 if (len > 0 && buf[len - 1] != '\0')
1831 fatalx("bad MSG_COMMAND string");
1832
1833 argc = data.argc;
1834 if (cmd_unpack_argv(buf, len, argc, &argv) != 0) {
1835 cause = xstrdup("command too long");
1836 goto error;
1837 }
1838
1839 if (argc == 0) {
1840 argc = 1;
1841 argv = xcalloc(1, sizeof *argv);
1842 *argv = xstrdup("new-session");
1843 }
1844
1845 pr = cmd_parse_from_arguments(argc, argv, NULL);
1846 switch (pr->status) {
1847 case CMD_PARSE_EMPTY:
1848 cause = xstrdup("empty command");
1849 goto error;
1850 case CMD_PARSE_ERROR:
1851 cause = pr->error;
1852 goto error;
1853 case CMD_PARSE_SUCCESS:
1854 break;
1855 }
1856 cmd_free_argv(argc, argv);
1857
1858 cmdq_append(c, cmdq_get_command(pr->cmdlist, NULL, NULL, 0));
1859 cmdq_append(c, cmdq_get_callback(server_client_command_done, NULL));
1860
1861 cmd_list_free(pr->cmdlist);
1862 return;
1863
1864error:
1865 cmd_free_argv(argc, argv);
1866
1867 cmdq_append(c, cmdq_get_error(cause));
1868 free(cause);
1869
1870 c->flags |= CLIENT_EXIT;
1871}
1872
1873/* Handle identify message. */
1874static void
1875server_client_dispatch_identify(struct client *c, struct imsg *imsg)
1876{
1877 const char *data, *home;
1878 size_t datalen;
1879 int flags;
1880 char *name;
1881
1882 if (c->flags & CLIENT_IDENTIFIED)
1883 fatalx("out-of-order identify message");
1884
1885 data = imsg->data;
1886 datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1887
1888 switch (imsg->hdr.type) {
1889 case MSG_IDENTIFY_FLAGS:
1890 if (datalen != sizeof flags)
1891 fatalx("bad MSG_IDENTIFY_FLAGS size");
1892 memcpy(&flags, data, sizeof flags);
1893 c->flags |= flags;
1894 log_debug("client %p IDENTIFY_FLAGS %#x", c, flags);
1895 break;
1896 case MSG_IDENTIFY_TERM:
1897 if (datalen == 0 || data[datalen - 1] != '\0')
1898 fatalx("bad MSG_IDENTIFY_TERM string");
1899 c->term = xstrdup(data);
1900 log_debug("client %p IDENTIFY_TERM %s", c, data);
1901 break;
1902 case MSG_IDENTIFY_TTYNAME:
1903 if (datalen == 0 || data[datalen - 1] != '\0')
1904 fatalx("bad MSG_IDENTIFY_TTYNAME string");
1905 c->ttyname = xstrdup(data);
1906 log_debug("client %p IDENTIFY_TTYNAME %s", c, data);
1907 break;
1908 case MSG_IDENTIFY_CWD:
1909 if (datalen == 0 || data[datalen - 1] != '\0')
1910 fatalx("bad MSG_IDENTIFY_CWD string");
1911 if (access(data, X_OK) == 0)
1912 c->cwd = xstrdup(data);
1913 else if ((home = find_home()) != NULL)
1914 c->cwd = xstrdup(home);
1915 else
1916 c->cwd = xstrdup("/");
1917 log_debug("client %p IDENTIFY_CWD %s", c, data);
1918 break;
1919 case MSG_IDENTIFY_STDIN:
1920 if (datalen != 0)
1921 fatalx("bad MSG_IDENTIFY_STDIN size");
1922 c->fd = imsg->fd;
1923 log_debug("client %p IDENTIFY_STDIN %d", c, imsg->fd);
1924 break;
1925 case MSG_IDENTIFY_ENVIRON:
1926 if (datalen == 0 || data[datalen - 1] != '\0')
1927 fatalx("bad MSG_IDENTIFY_ENVIRON string");
1928 if (strchr(data, '=') != NULL)
1929 environ_put(c->environ, data);
1930 log_debug("client %p IDENTIFY_ENVIRON %s", c, data);
1931 break;
1932 case MSG_IDENTIFY_CLIENTPID:
1933 if (datalen != sizeof c->pid)
1934 fatalx("bad MSG_IDENTIFY_CLIENTPID size");
1935 memcpy(&c->pid, data, sizeof c->pid);
1936 log_debug("client %p IDENTIFY_CLIENTPID %ld", c, (long)c->pid);
1937 break;
1938 default:
1939 break;
1940 }
1941
1942 if (imsg->hdr.type != MSG_IDENTIFY_DONE)
1943 return;
1944 c->flags |= CLIENT_IDENTIFIED;
1945
1946 if (*c->ttyname != '\0')
1947 name = xstrdup(c->ttyname);
1948 else
1949 xasprintf(&name, "client-%ld", (long)c->pid);
1950 c->name = name;
1951 log_debug("client %p name is %s", c, c->name);
1952
1953#ifdef __CYGWIN__
1954 c->fd = open(c->ttyname, O_RDWR|O_NOCTTY);
1955#endif
1956
1957 if (c->flags & CLIENT_CONTROL) {
1958 close(c->fd);
1959 c->fd = -1;
1960
1961 control_start(c);
1962 c->tty.fd = -1;
1963 } else if (c->fd != -1) {
1964 if (tty_init(&c->tty, c, c->fd, c->term) != 0) {
1965 close(c->fd);
1966 c->fd = -1;
1967 } else {
1968 if (c->flags & CLIENT_UTF8)
1969 c->tty.flags |= TTY_UTF8;
1970 if (c->flags & CLIENT_256COLOURS)
1971 c->tty.term_flags |= TERM_256COLOURS;
1972 tty_resize(&c->tty);
1973 c->flags |= CLIENT_TERMINAL;
1974 }
1975 }
1976
1977 /*
1978 * If this is the first client that has finished identifying, load
1979 * configuration files.
1980 */
1981 if ((~c->flags & CLIENT_EXIT) &&
1982 !cfg_finished &&
1983 c == TAILQ_FIRST(&clients) &&
1984 TAILQ_NEXT(c, entry) == NULL)
1985 start_cfg();
1986}
1987
1988/* Handle shell message. */
1989static void
1990server_client_dispatch_shell(struct client *c)
1991{
1992 const char *shell;
1993
1994 shell = options_get_string(global_s_options, "default-shell");
1995 if (*shell == '\0' || areshell(shell))
1996 shell = _PATH_BSHELL;
1997 proc_send(c->peer, MSG_SHELL, -1, shell, strlen(shell) + 1);
1998
1999 proc_kill_peer(c->peer);
2000}
2001
2002/* Handle write ready message. */
2003static void
2004server_client_dispatch_write_ready(struct client *c, struct imsg *imsg)
2005{
2006 struct msg_write_ready *msg = imsg->data;
2007 size_t msglen = imsg->hdr.len - IMSG_HEADER_SIZE;
2008 struct client_file find, *cf;
2009
2010 if (msglen != sizeof *msg)
2011 fatalx("bad MSG_WRITE_READY size");
2012 find.stream = msg->stream;
2013 if ((cf = RB_FIND(client_files, &c->files, &find)) == NULL)
2014 return;
2015 if (msg->error != 0) {
2016 cf->error = msg->error;
2017 file_fire_done(cf);
2018 } else
2019 file_push(cf);
2020}
2021
2022/* Handle read data message. */
2023static void
2024server_client_dispatch_read_data(struct client *c, struct imsg *imsg)
2025{
2026 struct msg_read_data *msg = imsg->data;
2027 size_t msglen = imsg->hdr.len - IMSG_HEADER_SIZE;
2028 struct client_file find, *cf;
2029 void *bdata = msg + 1;
2030 size_t bsize = msglen - sizeof *msg;
2031
2032 if (msglen < sizeof *msg)
2033 fatalx("bad MSG_READ_DATA size");
2034 find.stream = msg->stream;
2035 if ((cf = RB_FIND(client_files, &c->files, &find)) == NULL)
2036 return;
2037
2038 log_debug("%s: file %d read %zu bytes", c->name, cf->stream, bsize);
2039 if (cf->error == 0) {
2040 if (evbuffer_add(cf->buffer, bdata, bsize) != 0) {
2041 cf->error = ENOMEM;
2042 file_fire_done(cf);
2043 } else
2044 file_fire_read(cf);
2045 }
2046}
2047
2048/* Handle read done message. */
2049static void
2050server_client_dispatch_read_done(struct client *c, struct imsg *imsg)
2051{
2052 struct msg_read_done *msg = imsg->data;
2053 size_t msglen = imsg->hdr.len - IMSG_HEADER_SIZE;
2054 struct client_file find, *cf;
2055
2056 if (msglen != sizeof *msg)
2057 fatalx("bad MSG_READ_DONE size");
2058 find.stream = msg->stream;
2059 if ((cf = RB_FIND(client_files, &c->files, &find)) == NULL)
2060 return;
2061
2062 log_debug("%s: file %d read done", c->name, cf->stream);
2063 cf->error = msg->error;
2064 file_fire_done(cf);
2065}
2066
2067/* Add to client message log. */
2068void
2069server_client_add_message(struct client *c, const char *fmt, ...)
2070{
2071 struct message_entry *msg, *msg1;
2072 char *s;
2073 va_list ap;
2074 u_int limit;
2075
2076 va_start(ap, fmt);
2077 xvasprintf(&s, fmt, ap);
2078 va_end(ap);
2079
2080 log_debug("message %s (client %p)", s, c);
2081
2082 msg = xcalloc(1, sizeof *msg);
2083 msg->msg_time = time(NULL);
2084 msg->msg_num = c->message_next++;
2085 msg->msg = s;
2086 TAILQ_INSERT_TAIL(&c->message_log, msg, entry);
2087
2088 limit = options_get_number(global_options, "message-limit");
2089 TAILQ_FOREACH_SAFE(msg, &c->message_log, entry, msg1) {
2090 if (msg->msg_num + limit >= c->message_next)
2091 break;
2092 free(msg->msg);
2093 TAILQ_REMOVE(&c->message_log, msg, entry);
2094 free(msg);
2095 }
2096}
2097
2098/* Get client working directory. */
2099const char *
2100server_client_get_cwd(struct client *c, struct session *s)
2101{
2102 const char *home;
2103
2104 if (!cfg_finished && cfg_client != NULL)
2105 return (cfg_client->cwd);
2106 if (c != NULL && c->session == NULL && c->cwd != NULL)
2107 return (c->cwd);
2108 if (s != NULL && s->cwd != NULL)
2109 return (s->cwd);
2110 if (c != NULL && (s = c->session) != NULL && s->cwd != NULL)
2111 return (s->cwd);
2112 if ((home = find_home()) != NULL)
2113 return (home);
2114 return ("/");
2115}
2116