Annotation of src/usr.bin/tmux/window.c, Revision 1.82
1.82 ! nicm 1: /* $OpenBSD: window.c,v 1.81 2012/07/08 07:27:32 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
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:
22: #include <errno.h>
23: #include <fcntl.h>
1.5 nicm 24: #include <fnmatch.h>
1.1 nicm 25: #include <paths.h>
1.8 nicm 26: #include <pwd.h>
1.1 nicm 27: #include <signal.h>
28: #include <stdint.h>
29: #include <stdlib.h>
30: #include <string.h>
31: #include <termios.h>
32: #include <unistd.h>
33: #include <util.h>
34:
35: #include "tmux.h"
36:
37: /*
1.14 nicm 38: * Each window is attached to a number of panes, each of which is a pty. This
1.1 nicm 39: * file contains code to handle them.
40: *
41: * A pane has two buffers attached, these are filled and emptied by the main
42: * server poll loop. Output data is received from pty's in screen format,
43: * translated and returned as a series of escape sequences and strings via
44: * input_parse (in input.c). Input data is received as key codes and written
45: * directly via input_key.
46: *
47: * Each pane also has a "virtual" screen (screen.c) which contains the current
48: * state and is redisplayed when the window is reattached to a client.
49: *
50: * Windows are stored directly on a global array and wrapped in any number of
51: * winlink structs to be linked onto local session RB trees. A reference count
52: * is maintained and a window removed from the global list and destroyed when
53: * it reaches zero.
54: */
55:
56: /* Global window list. */
57: struct windows windows;
58:
1.64 nicm 59: /* Global panes tree. */
60: struct window_pane_tree all_window_panes;
1.71 nicm 61: u_int next_window_pane_id;
62: u_int next_window_id;
1.64 nicm 63:
1.75 nicm 64: void window_pane_timer_callback(int, short, void *);
1.37 nicm 65: void window_pane_read_callback(struct bufferevent *, void *);
66: void window_pane_error_callback(struct bufferevent *, short, void *);
67:
1.1 nicm 68: RB_GENERATE(winlinks, winlink, entry, winlink_cmp);
69:
70: int
71: winlink_cmp(struct winlink *wl1, struct winlink *wl2)
72: {
73: return (wl1->idx - wl2->idx);
1.12 nicm 74: }
75:
1.64 nicm 76: RB_GENERATE(window_pane_tree, window_pane, tree_entry, window_pane_cmp);
77:
78: int
79: window_pane_cmp(struct window_pane *wp1, struct window_pane *wp2)
80: {
81: return (wp1->id - wp2->id);
82: }
83:
1.12 nicm 84: struct winlink *
85: winlink_find_by_window(struct winlinks *wwl, struct window *w)
86: {
87: struct winlink *wl;
88:
89: RB_FOREACH(wl, winlinks, wwl) {
90: if (wl->window == w)
91: return (wl);
92: }
93:
94: return (NULL);
1.1 nicm 95: }
96:
97: struct winlink *
98: winlink_find_by_index(struct winlinks *wwl, int idx)
99: {
100: struct winlink wl;
101:
102: if (idx < 0)
103: fatalx("bad index");
104:
105: wl.idx = idx;
106: return (RB_FIND(winlinks, wwl, &wl));
107: }
108:
1.71 nicm 109: struct winlink *
110: winlink_find_by_window_id(struct winlinks *wwl, u_int id)
111: {
112: struct winlink *wl;
113:
114: RB_FOREACH(wl, winlinks, wwl) {
115: if (wl->window->id == id)
116: return (wl);
117: }
1.78 nicm 118: return (NULL);
1.71 nicm 119: }
120:
1.1 nicm 121: int
1.22 nicm 122: winlink_next_index(struct winlinks *wwl, int idx)
1.1 nicm 123: {
1.22 nicm 124: int i;
1.1 nicm 125:
1.22 nicm 126: i = idx;
127: do {
1.1 nicm 128: if (winlink_find_by_index(wwl, i) == NULL)
129: return (i);
1.22 nicm 130: if (i == INT_MAX)
131: i = 0;
132: else
133: i++;
134: } while (i != idx);
135: return (-1);
1.1 nicm 136: }
137:
138: u_int
139: winlink_count(struct winlinks *wwl)
140: {
141: struct winlink *wl;
142: u_int n;
143:
144: n = 0;
145: RB_FOREACH(wl, winlinks, wwl)
146: n++;
147:
148: return (n);
149: }
150:
151: struct winlink *
1.63 nicm 152: winlink_add(struct winlinks *wwl, int idx)
1.1 nicm 153: {
154: struct winlink *wl;
155:
1.22 nicm 156: if (idx < 0) {
157: if ((idx = winlink_next_index(wwl, -idx - 1)) == -1)
158: return (NULL);
159: } else if (winlink_find_by_index(wwl, idx) != NULL)
1.1 nicm 160: return (NULL);
161:
162: wl = xcalloc(1, sizeof *wl);
163: wl->idx = idx;
164: RB_INSERT(winlinks, wwl, wl);
165:
1.63 nicm 166: return (wl);
167: }
168:
169: void
170: winlink_set_window(struct winlink *wl, struct window *w)
171: {
172: wl->window = w;
1.1 nicm 173: w->references++;
174: }
175:
176: void
177: winlink_remove(struct winlinks *wwl, struct winlink *wl)
178: {
179: struct window *w = wl->window;
180:
181: RB_REMOVE(winlinks, wwl, wl);
1.82 ! nicm 182: free(wl->status_text);
! 183: free(wl);
1.1 nicm 184:
1.63 nicm 185: if (w != NULL) {
186: if (w->references == 0)
187: fatal("bad reference count");
188: w->references--;
189: if (w->references == 0)
190: window_destroy(w);
191: }
1.1 nicm 192: }
193:
194: struct winlink *
1.41 nicm 195: winlink_next(struct winlink *wl)
1.1 nicm 196: {
197: return (RB_NEXT(winlinks, wwl, wl));
198: }
199:
200: struct winlink *
1.41 nicm 201: winlink_previous(struct winlink *wl)
1.1 nicm 202: {
203: return (RB_PREV(winlinks, wwl, wl));
1.52 nicm 204: }
205:
206: struct winlink *
1.53 nicm 207: winlink_next_by_number(struct winlink *wl, struct session *s, int n)
1.52 nicm 208: {
209: for (; n > 0; n--) {
210: if ((wl = RB_NEXT(winlinks, wwl, wl)) == NULL)
1.53 nicm 211: wl = RB_MIN(winlinks, &s->windows);
1.52 nicm 212: }
213:
214: return (wl);
215: }
216:
217: struct winlink *
1.53 nicm 218: winlink_previous_by_number(struct winlink *wl, struct session *s, int n)
1.52 nicm 219: {
220: for (; n > 0; n--) {
221: if ((wl = RB_PREV(winlinks, wwl, wl)) == NULL)
1.53 nicm 222: wl = RB_MAX(winlinks, &s->windows);
1.52 nicm 223: }
224:
225: return (wl);
1.1 nicm 226: }
227:
228: void
229: winlink_stack_push(struct winlink_stack *stack, struct winlink *wl)
230: {
231: if (wl == NULL)
232: return;
233:
234: winlink_stack_remove(stack, wl);
1.28 nicm 235: TAILQ_INSERT_HEAD(stack, wl, sentry);
1.1 nicm 236: }
237:
238: void
239: winlink_stack_remove(struct winlink_stack *stack, struct winlink *wl)
240: {
241: struct winlink *wl2;
242:
243: if (wl == NULL)
244: return;
1.42 nicm 245:
1.28 nicm 246: TAILQ_FOREACH(wl2, stack, sentry) {
1.1 nicm 247: if (wl2 == wl) {
1.28 nicm 248: TAILQ_REMOVE(stack, wl, sentry);
1.1 nicm 249: return;
250: }
251: }
252: }
253:
254: int
255: window_index(struct window *s, u_int *i)
256: {
257: for (*i = 0; *i < ARRAY_LENGTH(&windows); (*i)++) {
258: if (s == ARRAY_ITEM(&windows, *i))
259: return (0);
260: }
261: return (-1);
262: }
263:
264: struct window *
1.71 nicm 265: window_find_by_id(u_int id)
266: {
267: struct window *w;
268: u_int i;
269:
270: for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
271: w = ARRAY_ITEM(&windows, i);
272: if (w->id == id)
273: return (w);
274: }
1.78 nicm 275: return (NULL);
1.71 nicm 276: }
277:
278: struct window *
1.1 nicm 279: window_create1(u_int sx, u_int sy)
280: {
281: struct window *w;
282: u_int i;
283:
1.38 nicm 284: w = xcalloc(1, sizeof *w);
1.71 nicm 285: w->id = next_window_id++;
1.1 nicm 286: w->name = NULL;
287: w->flags = 0;
288:
289: TAILQ_INIT(&w->panes);
290: w->active = NULL;
1.14 nicm 291:
1.17 nicm 292: w->lastlayout = -1;
1.14 nicm 293: w->layout_root = NULL;
1.77 nicm 294: TAILQ_INIT(&w->layout_list);
1.42 nicm 295:
1.1 nicm 296: w->sx = sx;
297: w->sy = sy;
298:
1.7 nicm 299: options_init(&w->options, &global_w_options);
1.79 nicm 300: if (options_get_number(&w->options, "automatic-rename"))
301: queue_window_name(w);
1.1 nicm 302:
303: for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
304: if (ARRAY_ITEM(&windows, i) == NULL) {
305: ARRAY_SET(&windows, i, w);
306: break;
307: }
308: }
309: if (i == ARRAY_LENGTH(&windows))
310: ARRAY_ADD(&windows, w);
311: w->references = 0;
312:
313: return (w);
314: }
315:
316: struct window *
1.23 nicm 317: window_create(const char *name, const char *cmd, const char *shell,
318: const char *cwd, struct environ *env, struct termios *tio,
319: u_int sx, u_int sy, u_int hlimit,char **cause)
1.1 nicm 320: {
1.14 nicm 321: struct window *w;
322: struct window_pane *wp;
1.1 nicm 323:
324: w = window_create1(sx, sy);
1.16 nicm 325: wp = window_add_pane(w, hlimit);
1.14 nicm 326: layout_init(w);
1.23 nicm 327: if (window_pane_spawn(wp, cmd, shell, cwd, env, tio, cause) != 0) {
1.1 nicm 328: window_destroy(w);
329: return (NULL);
330: }
331: w->active = TAILQ_FIRST(&w->panes);
332: if (name != NULL) {
333: w->name = xstrdup(name);
334: options_set_number(&w->options, "automatic-rename", 0);
335: } else
336: w->name = default_window_name(w);
337: return (w);
338: }
339:
340: void
341: window_destroy(struct window *w)
342: {
343: u_int i;
344:
345: if (window_index(w, &i) != 0)
346: fatalx("index not found");
347: ARRAY_SET(&windows, i, NULL);
348: while (!ARRAY_EMPTY(&windows) && ARRAY_LAST(&windows) == NULL)
349: ARRAY_TRUNC(&windows, 1);
350:
1.14 nicm 351: if (w->layout_root != NULL)
352: layout_free(w);
353:
1.73 nicm 354: if (event_initialized(&w->name_timer))
355: evtimer_del(&w->name_timer);
1.38 nicm 356:
1.1 nicm 357: options_free(&w->options);
358:
359: window_destroy_panes(w);
360:
1.82 ! nicm 361: free(w->name);
! 362: free(w);
1.72 nicm 363: }
364:
365: void
366: window_set_name(struct window *w, const char *new_name)
367: {
1.82 ! nicm 368: free(w->name);
1.72 nicm 369: w->name = xstrdup(new_name);
1.74 nicm 370: notify_window_renamed(w);
1.1 nicm 371: }
372:
1.15 nicm 373: void
1.1 nicm 374: window_resize(struct window *w, u_int sx, u_int sy)
375: {
376: w->sx = sx;
377: w->sy = sy;
378: }
379:
380: void
381: window_set_active_pane(struct window *w, struct window_pane *wp)
382: {
1.59 nicm 383: if (wp == w->active)
384: return;
1.58 nicm 385: w->last = w->active;
1.1 nicm 386: w->active = wp;
1.10 nicm 387: while (!window_pane_visible(w->active)) {
1.1 nicm 388: w->active = TAILQ_PREV(w->active, window_panes, entry);
1.10 nicm 389: if (w->active == NULL)
390: w->active = TAILQ_LAST(&w->panes, window_panes);
391: if (w->active == wp)
392: return;
1.29 nicm 393: }
394: }
395:
1.66 nicm 396: struct window_pane *
397: window_get_active_at(struct window *w, u_int x, u_int y)
1.29 nicm 398: {
399: struct window_pane *wp;
400:
401: TAILQ_FOREACH(wp, &w->panes, entry) {
1.66 nicm 402: if (!window_pane_visible(wp))
1.29 nicm 403: continue;
1.66 nicm 404: if (x < wp->xoff || x > wp->xoff + wp->sx)
1.29 nicm 405: continue;
1.66 nicm 406: if (y < wp->yoff || y > wp->yoff + wp->sy)
1.29 nicm 407: continue;
1.66 nicm 408: return (wp);
409: }
410: return (NULL);
411: }
412:
413: void
414: window_set_active_at(struct window *w, u_int x, u_int y)
415: {
416: struct window_pane *wp;
417:
418: wp = window_get_active_at(w, x, y);
419: if (wp != NULL && wp != w->active)
1.29 nicm 420: window_set_active_pane(w, wp);
1.66 nicm 421: }
422:
423: struct window_pane *
424: window_find_string(struct window *w, const char *s)
425: {
426: u_int x, y;
427:
428: x = w->sx / 2;
429: y = w->sy / 2;
430:
431: if (strcasecmp(s, "top") == 0)
432: y = 0;
433: else if (strcasecmp(s, "bottom") == 0)
434: y = w->sy - 1;
435: else if (strcasecmp(s, "left") == 0)
436: x = 0;
437: else if (strcasecmp(s, "right") == 0)
438: x = w->sx - 1;
439: else if (strcasecmp(s, "top-left") == 0) {
440: x = 0;
441: y = 0;
442: } else if (strcasecmp(s, "top-right") == 0) {
443: x = w->sx - 1;
444: y = 0;
445: } else if (strcasecmp(s, "bottom-left") == 0) {
446: x = 0;
447: y = w->sy - 1;
448: } else if (strcasecmp(s, "bottom-right") == 0) {
449: x = w->sx - 1;
450: y = w->sy - 1;
451: } else
452: return (NULL);
453:
454: return (window_get_active_at(w, x, y));
1.1 nicm 455: }
456:
457: struct window_pane *
1.16 nicm 458: window_add_pane(struct window *w, u_int hlimit)
1.1 nicm 459: {
460: struct window_pane *wp;
461:
1.14 nicm 462: wp = window_pane_create(w, w->sx, w->sy, hlimit);
1.1 nicm 463: if (TAILQ_EMPTY(&w->panes))
464: TAILQ_INSERT_HEAD(&w->panes, wp, entry);
465: else
466: TAILQ_INSERT_AFTER(&w->panes, w->active, wp, entry);
467: return (wp);
468: }
469:
470: void
471: window_remove_pane(struct window *w, struct window_pane *wp)
472: {
1.57 nicm 473: if (wp == w->active) {
1.58 nicm 474: w->active = w->last;
475: w->last = NULL;
476: if (w->active == NULL) {
477: w->active = TAILQ_PREV(wp, window_panes, entry);
478: if (w->active == NULL)
479: w->active = TAILQ_NEXT(wp, entry);
480: }
481: } else if (wp == w->last)
482: w->last = NULL;
1.1 nicm 483:
484: TAILQ_REMOVE(&w->panes, wp, entry);
485: window_pane_destroy(wp);
486: }
487:
488: struct window_pane *
489: window_pane_at_index(struct window *w, u_int idx)
490: {
491: struct window_pane *wp;
492: u_int n;
493:
1.67 nicm 494: n = options_get_number(&w->options, "pane-base-index");
1.1 nicm 495: TAILQ_FOREACH(wp, &w->panes, entry) {
496: if (n == idx)
497: return (wp);
498: n++;
499: }
500: return (NULL);
1.53 nicm 501: }
502:
503: struct window_pane *
504: window_pane_next_by_number(struct window *w, struct window_pane *wp, u_int n)
505: {
506: for (; n > 0; n--) {
507: if ((wp = TAILQ_NEXT(wp, entry)) == NULL)
508: wp = TAILQ_FIRST(&w->panes);
509: }
510:
511: return (wp);
512: }
513:
514: struct window_pane *
515: window_pane_previous_by_number(struct window *w, struct window_pane *wp,
516: u_int n)
517: {
518: for (; n > 0; n--) {
519: if ((wp = TAILQ_PREV(wp, window_panes, entry)) == NULL)
520: wp = TAILQ_LAST(&w->panes, window_panes);
521: }
522:
523: return (wp);
1.13 nicm 524: }
525:
1.69 nicm 526: int
527: window_pane_index(struct window_pane *wp, u_int *i)
1.13 nicm 528: {
529: struct window_pane *wq;
1.69 nicm 530: struct window *w = wp->window;
1.13 nicm 531:
1.69 nicm 532: *i = options_get_number(&w->options, "pane-base-index");
1.13 nicm 533: TAILQ_FOREACH(wq, &w->panes, entry) {
1.69 nicm 534: if (wp == wq) {
535: return (0);
536: }
537: (*i)++;
1.13 nicm 538: }
1.69 nicm 539:
540: return (-1);
1.1 nicm 541: }
542:
543: u_int
544: window_count_panes(struct window *w)
545: {
546: struct window_pane *wp;
547: u_int n;
548:
549: n = 0;
550: TAILQ_FOREACH(wp, &w->panes, entry)
551: n++;
552: return (n);
553: }
554:
555: void
556: window_destroy_panes(struct window *w)
557: {
558: struct window_pane *wp;
559:
560: while (!TAILQ_EMPTY(&w->panes)) {
561: wp = TAILQ_FIRST(&w->panes);
562: TAILQ_REMOVE(&w->panes, wp, entry);
563: window_pane_destroy(wp);
564: }
1.61 nicm 565: }
566:
567: /* Return list of printable window flag symbols. No flags is just a space. */
568: char *
569: window_printable_flags(struct session *s, struct winlink *wl)
570: {
571: char flags[BUFSIZ];
572: int pos;
573:
574: pos = 0;
575: if (wl->flags & WINLINK_ACTIVITY)
576: flags[pos++] = '#';
577: if (wl->flags & WINLINK_BELL)
578: flags[pos++] = '!';
579: if (wl->flags & WINLINK_CONTENT)
580: flags[pos++] = '+';
581: if (wl->flags & WINLINK_SILENCE)
582: flags[pos++] = '~';
583: if (wl == s->curw)
584: flags[pos++] = '*';
585: if (wl == TAILQ_FIRST(&s->lastw))
586: flags[pos++] = '-';
587: if (pos == 0)
588: flags[pos++] = ' ';
589: flags[pos] = '\0';
590: return (xstrdup(flags));
1.1 nicm 591: }
592:
1.64 nicm 593: /* Find pane in global tree by id. */
594: struct window_pane *
595: window_pane_find_by_id(u_int id)
596: {
597: struct window_pane wp;
598:
599: wp.id = id;
600: return (RB_FIND(window_pane_tree, &all_window_panes, &wp));
601: }
602:
1.1 nicm 603: struct window_pane *
604: window_pane_create(struct window *w, u_int sx, u_int sy, u_int hlimit)
605: {
606: struct window_pane *wp;
607:
608: wp = xcalloc(1, sizeof *wp);
609: wp->window = w;
610:
1.71 nicm 611: wp->id = next_window_pane_id++;
1.64 nicm 612: RB_INSERT(window_pane_tree, &all_window_panes, wp);
613:
1.1 nicm 614: wp->cmd = NULL;
1.23 nicm 615: wp->shell = NULL;
1.1 nicm 616: wp->cwd = NULL;
617:
618: wp->fd = -1;
1.37 nicm 619: wp->event = NULL;
1.1 nicm 620:
621: wp->mode = NULL;
1.14 nicm 622:
623: wp->layout_cell = NULL;
1.1 nicm 624:
625: wp->xoff = 0;
1.42 nicm 626: wp->yoff = 0;
1.1 nicm 627:
628: wp->sx = sx;
629: wp->sy = sy;
630:
1.32 nicm 631: wp->pipe_fd = -1;
632: wp->pipe_off = 0;
1.36 nicm 633: wp->pipe_event = NULL;
1.32 nicm 634:
1.9 nicm 635: wp->saved_grid = NULL;
636:
1.1 nicm 637: screen_init(&wp->base, sx, sy, hlimit);
638: wp->screen = &wp->base;
639:
640: input_init(wp);
641:
642: return (wp);
643: }
644:
645: void
646: window_pane_destroy(struct window_pane *wp)
647: {
1.55 nicm 648: window_pane_reset_mode(wp);
649:
1.76 nicm 650: if (event_initialized(&wp->changes_timer))
651: evtimer_del(&wp->changes_timer);
1.75 nicm 652:
1.37 nicm 653: if (wp->fd != -1) {
1.70 nicm 654: bufferevent_free(wp->event);
1.1 nicm 655: close(wp->fd);
1.37 nicm 656: }
1.1 nicm 657:
658: input_free(wp);
659:
660: screen_free(&wp->base);
1.9 nicm 661: if (wp->saved_grid != NULL)
662: grid_destroy(wp->saved_grid);
1.1 nicm 663:
1.32 nicm 664: if (wp->pipe_fd != -1) {
1.70 nicm 665: bufferevent_free(wp->pipe_event);
1.32 nicm 666: close(wp->pipe_fd);
667: }
668:
1.64 nicm 669: RB_REMOVE(window_pane_tree, &all_window_panes, wp);
670:
1.82 ! nicm 671: free(wp->cwd);
! 672: free(wp->shell);
! 673: free(wp->cmd);
! 674: free(wp);
1.1 nicm 675: }
676:
677: int
1.23 nicm 678: window_pane_spawn(struct window_pane *wp, const char *cmd, const char *shell,
1.21 nicm 679: const char *cwd, struct environ *env, struct termios *tio, char **cause)
1.1 nicm 680: {
1.47 nicm 681: struct winsize ws;
1.64 nicm 682: char *argv0, paneid[16];
1.47 nicm 683: const char *ptr;
684: struct termios tio2;
1.1 nicm 685:
1.37 nicm 686: if (wp->fd != -1) {
1.70 nicm 687: bufferevent_free(wp->event);
1.1 nicm 688: close(wp->fd);
1.37 nicm 689: }
1.1 nicm 690: if (cmd != NULL) {
1.82 ! nicm 691: free(wp->cmd);
1.1 nicm 692: wp->cmd = xstrdup(cmd);
693: }
1.23 nicm 694: if (shell != NULL) {
1.82 ! nicm 695: free(wp->shell);
1.23 nicm 696: wp->shell = xstrdup(shell);
697: }
1.1 nicm 698: if (cwd != NULL) {
1.82 ! nicm 699: free(wp->cwd);
1.1 nicm 700: wp->cwd = xstrdup(cwd);
701: }
702:
703: memset(&ws, 0, sizeof ws);
704: ws.ws_col = screen_size_x(&wp->base);
705: ws.ws_row = screen_size_y(&wp->base);
706:
1.42 nicm 707: switch (wp->pid = forkpty(&wp->fd, wp->tty, NULL, &ws)) {
1.1 nicm 708: case -1:
709: wp->fd = -1;
710: xasprintf(cause, "%s: %s", cmd, strerror(errno));
711: return (-1);
712: case 0:
713: if (chdir(wp->cwd) != 0)
714: chdir("/");
1.25 nicm 715:
716: if (tcgetattr(STDIN_FILENO, &tio2) != 0)
717: fatal("tcgetattr failed");
718: if (tio != NULL)
719: memcpy(tio2.c_cc, tio->c_cc, sizeof tio2.c_cc);
720: tio2.c_cc[VERASE] = '\177';
721: if (tcsetattr(STDIN_FILENO, TCSANOW, &tio2) != 0)
722: fatal("tcgetattr failed");
1.18 nicm 723:
1.56 nicm 724: closefrom(STDERR_FILENO + 1);
725:
1.64 nicm 726: xsnprintf(paneid, sizeof paneid, "%%%u", wp->id);
727: environ_set(env, "TMUX_PANE", paneid);
1.47 nicm 728: environ_push(env);
1.18 nicm 729:
1.54 nicm 730: clear_signals(1);
1.1 nicm 731: log_close();
732:
1.80 nicm 733: setenv("SHELL", wp->shell, 1);
734: ptr = strrchr(wp->shell, '/');
735:
1.8 nicm 736: if (*wp->cmd != '\0') {
1.80 nicm 737: /* Use the command. */
738: if (ptr != NULL && *(ptr + 1) != '\0')
739: xasprintf(&argv0, "%s", ptr + 1);
740: else
741: xasprintf(&argv0, "%s", wp->shell);
742: execl(wp->shell, argv0, "-c", wp->cmd, (char *) NULL);
1.8 nicm 743: fatal("execl failed");
744: }
745:
746: /* No command; fork a login shell. */
1.23 nicm 747: if (ptr != NULL && *(ptr + 1) != '\0')
1.8 nicm 748: xasprintf(&argv0, "-%s", ptr + 1);
749: else
1.23 nicm 750: xasprintf(&argv0, "-%s", wp->shell);
751: execl(wp->shell, argv0, (char *) NULL);
1.1 nicm 752: fatal("execl failed");
753: }
754:
1.62 nicm 755: setblocking(wp->fd, 0);
756:
1.37 nicm 757: wp->event = bufferevent_new(wp->fd,
758: window_pane_read_callback, NULL, window_pane_error_callback, wp);
759: bufferevent_enable(wp->event, EV_READ|EV_WRITE);
1.1 nicm 760:
761: return (0);
1.75 nicm 762: }
763:
764: void
765: window_pane_timer_start(struct window_pane *wp)
766: {
767: struct timeval tv;
768:
769: tv.tv_sec = 0;
770: tv.tv_usec = 1000;
771:
772: evtimer_del(&wp->changes_timer);
773: evtimer_set(&wp->changes_timer, window_pane_timer_callback, wp);
774: evtimer_add(&wp->changes_timer, &tv);
775: }
776:
777: void
778: window_pane_timer_callback(unused int fd, unused short events, void *data)
779: {
780: struct window_pane *wp = data;
781: struct window *w = wp->window;
782: u_int interval, trigger;
783:
784: interval = options_get_number(&w->options, "c0-change-interval");
785: trigger = options_get_number(&w->options, "c0-change-trigger");
786:
787: if (wp->changes_redraw++ == interval) {
788: wp->flags |= PANE_REDRAW;
789: wp->changes_redraw = 0;
790:
791: }
792:
793: if (trigger == 0 || wp->changes < trigger) {
794: wp->flags |= PANE_REDRAW;
795: wp->flags &= ~PANE_DROP;
796: } else
797: window_pane_timer_start(wp);
798: wp->changes = 0;
1.1 nicm 799: }
800:
1.41 nicm 801: /* ARGSUSED */
1.15 nicm 802: void
1.37 nicm 803: window_pane_read_callback(unused struct bufferevent *bufev, void *data)
804: {
1.46 nicm 805: struct window_pane *wp = data;
806: char *new_data;
807: size_t new_size;
808:
809: new_size = EVBUFFER_LENGTH(wp->event->input) - wp->pipe_off;
810: if (wp->pipe_fd != -1 && new_size > 0) {
811: new_data = EVBUFFER_DATA(wp->event->input);
812: bufferevent_write(wp->pipe_event, new_data, new_size);
813: }
814:
815: input_parse(wp);
1.37 nicm 816:
1.46 nicm 817: wp->pipe_off = EVBUFFER_LENGTH(wp->event->input);
1.60 nicm 818:
819: /*
820: * If we get here, we're not outputting anymore, so set the silence
821: * flag on the window.
822: */
823: wp->window->flags |= WINDOW_SILENCE;
824: if (gettimeofday(&wp->window->silence_timer, NULL) != 0)
825: fatal("gettimeofday failed.");
1.37 nicm 826: }
827:
1.41 nicm 828: /* ARGSUSED */
1.37 nicm 829: void
830: window_pane_error_callback(
831: unused struct bufferevent *bufev, unused short what, void *data)
832: {
833: struct window_pane *wp = data;
834:
1.39 nicm 835: server_destroy_pane(wp);
1.37 nicm 836: }
837:
838: void
1.1 nicm 839: window_pane_resize(struct window_pane *wp, u_int sx, u_int sy)
840: {
841: struct winsize ws;
842:
843: if (sx == wp->sx && sy == wp->sy)
1.15 nicm 844: return;
1.1 nicm 845: wp->sx = sx;
846: wp->sy = sy;
847:
848: memset(&ws, 0, sizeof ws);
849: ws.ws_col = sx;
850: ws.ws_row = sy;
851:
852: screen_resize(&wp->base, sx, sy);
853: if (wp->mode != NULL)
854: wp->mode->resize(wp, sx, sy);
855:
856: if (wp->fd != -1 && ioctl(wp->fd, TIOCSWINSZ, &ws) == -1)
857: fatal("ioctl failed");
1.44 nicm 858: }
859:
860: /*
861: * Enter alternative screen mode. A copy of the visible screen is saved and the
862: * history is not updated
863: */
864: void
865: window_pane_alternate_on(struct window_pane *wp, struct grid_cell *gc)
866: {
867: struct screen *s = &wp->base;
868: u_int sx, sy;
869:
870: if (wp->saved_grid != NULL)
871: return;
872: if (!options_get_number(&wp->window->options, "alternate-screen"))
873: return;
874: sx = screen_size_x(s);
875: sy = screen_size_y(s);
876:
877: wp->saved_grid = grid_create(sx, sy, 0);
878: grid_duplicate_lines(wp->saved_grid, 0, s->grid, screen_hsize(s), sy);
879: wp->saved_cx = s->cx;
880: wp->saved_cy = s->cy;
881: memcpy(&wp->saved_cell, gc, sizeof wp->saved_cell);
882:
883: grid_view_clear(s->grid, 0, 0, sx, sy);
884:
885: wp->base.grid->flags &= ~GRID_HISTORY;
886:
887: wp->flags |= PANE_REDRAW;
888: }
889:
890: /* Exit alternate screen mode and restore the copied grid. */
891: void
892: window_pane_alternate_off(struct window_pane *wp, struct grid_cell *gc)
893: {
894: struct screen *s = &wp->base;
895: u_int sx, sy;
896:
897: if (wp->saved_grid == NULL)
898: return;
899: if (!options_get_number(&wp->window->options, "alternate-screen"))
900: return;
901: sx = screen_size_x(s);
902: sy = screen_size_y(s);
903:
904: /*
905: * If the current size is bigger, temporarily resize to the old size
906: * before copying back.
907: */
908: if (sy > wp->saved_grid->sy)
909: screen_resize(s, sx, wp->saved_grid->sy);
910:
911: /* Restore the grid, cursor position and cell. */
912: grid_duplicate_lines(s->grid, screen_hsize(s), wp->saved_grid, 0, sy);
913: s->cx = wp->saved_cx;
914: if (s->cx > screen_size_x(s) - 1)
915: s->cx = screen_size_x(s) - 1;
916: s->cy = wp->saved_cy;
917: if (s->cy > screen_size_y(s) - 1)
918: s->cy = screen_size_y(s) - 1;
919: memcpy(gc, &wp->saved_cell, sizeof *gc);
920:
921: /*
922: * Turn history back on (so resize can use it) and then resize back to
923: * the current size.
924: */
925: wp->base.grid->flags |= GRID_HISTORY;
926: if (sy > wp->saved_grid->sy)
927: screen_resize(s, sx, sy);
928:
929: grid_destroy(wp->saved_grid);
930: wp->saved_grid = NULL;
931:
932: wp->flags |= PANE_REDRAW;
1.1 nicm 933: }
934:
935: int
936: window_pane_set_mode(struct window_pane *wp, const struct window_mode *mode)
937: {
938: struct screen *s;
939:
1.15 nicm 940: if (wp->mode != NULL)
1.1 nicm 941: return (1);
942: wp->mode = mode;
943:
944: if ((s = wp->mode->init(wp)) != NULL)
945: wp->screen = s;
1.34 nicm 946: wp->flags |= PANE_REDRAW;
1.1 nicm 947: return (0);
948: }
949:
950: void
951: window_pane_reset_mode(struct window_pane *wp)
952: {
953: if (wp->mode == NULL)
954: return;
955:
956: wp->mode->free(wp);
957: wp->mode = NULL;
958:
959: wp->screen = &wp->base;
1.34 nicm 960: wp->flags |= PANE_REDRAW;
1.1 nicm 961: }
962:
963: void
1.51 nicm 964: window_pane_key(struct window_pane *wp, struct session *sess, int key)
1.1 nicm 965: {
1.27 nicm 966: struct window_pane *wp2;
967:
1.30 nicm 968: if (!window_pane_visible(wp))
1.3 nicm 969: return;
970:
1.1 nicm 971: if (wp->mode != NULL) {
972: if (wp->mode->key != NULL)
1.51 nicm 973: wp->mode->key(wp, sess, key);
1.27 nicm 974: return;
1.30 nicm 975: }
1.27 nicm 976:
1.30 nicm 977: if (wp->fd == -1)
978: return;
1.27 nicm 979: input_key(wp, key);
980: if (options_get_number(&wp->window->options, "synchronize-panes")) {
981: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
982: if (wp2 == wp || wp2->mode != NULL)
983: continue;
984: if (wp2->fd != -1 && window_pane_visible(wp2))
985: input_key(wp2, key);
986: }
987: }
1.1 nicm 988: }
989:
990: void
991: window_pane_mouse(
1.51 nicm 992: struct window_pane *wp, struct session *sess, struct mouse_event *m)
1.1 nicm 993: {
1.30 nicm 994: if (!window_pane_visible(wp))
1.3 nicm 995: return;
996:
1.31 nicm 997: if (m->x < wp->xoff || m->x >= wp->xoff + wp->sx)
1.1 nicm 998: return;
1.31 nicm 999: if (m->y < wp->yoff || m->y >= wp->yoff + wp->sy)
1.1 nicm 1000: return;
1.31 nicm 1001: m->x -= wp->xoff;
1002: m->y -= wp->yoff;
1.1 nicm 1003:
1004: if (wp->mode != NULL) {
1.65 nicm 1005: if (wp->mode->mouse != NULL &&
1006: options_get_number(&wp->window->options, "mode-mouse"))
1.51 nicm 1007: wp->mode->mouse(wp, sess, m);
1.30 nicm 1008: } else if (wp->fd != -1)
1.31 nicm 1009: input_mouse(wp, m);
1.10 nicm 1010: }
1011:
1012: int
1013: window_pane_visible(struct window_pane *wp)
1014: {
1015: struct window *w = wp->window;
1016:
1017: if (wp->xoff >= w->sx || wp->yoff >= w->sy)
1018: return (0);
1019: if (wp->xoff + wp->sx > w->sx || wp->yoff + wp->sy > w->sy)
1020: return (0);
1021: return (1);
1.1 nicm 1022: }
1023:
1024: char *
1.5 nicm 1025: window_pane_search(struct window_pane *wp, const char *searchstr, u_int *lineno)
1.1 nicm 1026: {
1.4 nicm 1027: struct screen *s = &wp->base;
1.5 nicm 1028: char *newsearchstr, *line, *msg;
1.4 nicm 1029: u_int i;
1030:
1.5 nicm 1031: msg = NULL;
1032: xasprintf(&newsearchstr, "*%s*", searchstr);
1033:
1.4 nicm 1034: for (i = 0; i < screen_size_y(s); i++) {
1035: line = grid_view_string_cells(s->grid, 0, i, screen_size_x(s));
1.5 nicm 1036: if (fnmatch(newsearchstr, line, 0) == 0) {
1037: msg = line;
1038: if (lineno != NULL)
1039: *lineno = i;
1040: break;
1041: }
1.82 ! nicm 1042: free(line);
1.4 nicm 1043: }
1.5 nicm 1044:
1.82 ! nicm 1045: free(newsearchstr);
1.5 nicm 1046: return (msg);
1.45 nicm 1047: }
1048:
1049: /* Find the pane directly above another. */
1050: struct window_pane *
1051: window_pane_find_up(struct window_pane *wp)
1052: {
1053: struct window_pane *wp2;
1054: u_int left, top;
1055:
1056: if (wp == NULL || !window_pane_visible(wp))
1057: return (NULL);
1058:
1059: top = wp->yoff;
1060: if (top == 0)
1061: top = wp->window->sy + 1;
1062: left = wp->xoff;
1063:
1064: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
1065: if (!window_pane_visible(wp2))
1066: continue;
1067: if (wp2->yoff + wp2->sy + 1 != top)
1068: continue;
1069: if (left >= wp2->xoff && left <= wp2->xoff + wp2->sx)
1070: return (wp2);
1071: }
1072: return (NULL);
1073: }
1074:
1075: /* Find the pane directly below another. */
1076: struct window_pane *
1077: window_pane_find_down(struct window_pane *wp)
1078: {
1079: struct window_pane *wp2;
1080: u_int left, bottom;
1081:
1082: if (wp == NULL || !window_pane_visible(wp))
1083: return (NULL);
1084:
1085: bottom = wp->yoff + wp->sy + 1;
1086: if (bottom >= wp->window->sy)
1087: bottom = 0;
1088: left = wp->xoff;
1089:
1090: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
1091: if (!window_pane_visible(wp2))
1092: continue;
1093: if (wp2->yoff != bottom)
1094: continue;
1095: if (left >= wp2->xoff && left <= wp2->xoff + wp2->sx)
1096: return (wp2);
1097: }
1098: return (NULL);
1099: }
1100:
1101: /*
1102: * Find the pane directly to the left of another, adjacent to the left side and
1103: * containing the top edge.
1104: */
1105: struct window_pane *
1106: window_pane_find_left(struct window_pane *wp)
1107: {
1108: struct window_pane *wp2;
1109: u_int left, top;
1110:
1111: if (wp == NULL || !window_pane_visible(wp))
1112: return (NULL);
1113:
1114: left = wp->xoff;
1115: if (left == 0)
1116: left = wp->window->sx + 1;
1117: top = wp->yoff;
1118:
1119: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
1120: if (!window_pane_visible(wp2))
1121: continue;
1122: if (wp2->xoff + wp2->sx + 1 != left)
1123: continue;
1124: if (top >= wp2->yoff && top <= wp2->yoff + wp2->sy)
1125: return (wp2);
1126: }
1127: return (NULL);
1128: }
1129:
1130: /*
1131: * Find the pane directly to the right of another, that is adjacent to the
1132: * right edge and including the top edge.
1133: */
1134: struct window_pane *
1135: window_pane_find_right(struct window_pane *wp)
1136: {
1137: struct window_pane *wp2;
1138: u_int right, top;
1139:
1140: if (wp == NULL || !window_pane_visible(wp))
1141: return (NULL);
1142:
1143: right = wp->xoff + wp->sx + 1;
1144: if (right >= wp->window->sx)
1145: right = 0;
1146: top = wp->yoff;
1147:
1148: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
1149: if (!window_pane_visible(wp2))
1150: continue;
1151: if (wp2->xoff != right)
1152: continue;
1153: if (top >= wp2->yoff && top <= wp2->yoff + wp2->sy)
1154: return (wp2);
1155: }
1156: return (NULL);
1.81 nicm 1157: }
1158:
1159: /* Clear alert flags for a winlink */
1160: void
1161: winlink_clear_flags(struct winlink *wl)
1162: {
1163: struct winlink *wm;
1164: struct session *s;
1165: struct window *w;
1166: u_int i;
1167:
1168: for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
1169: if ((w = ARRAY_ITEM(&windows, i)) == NULL)
1170: continue;
1171:
1172: RB_FOREACH(s, sessions, &sessions) {
1173: if ((wm = session_has(s, w)) == NULL)
1174: continue;
1175:
1176: if (wm->window != wl->window)
1177: continue;
1178: if ((wm->flags & WINLINK_ALERTFLAGS) == 0)
1179: continue;
1180:
1181: wm->flags &= ~WINLINK_ALERTFLAGS;
1182: server_status_session(s);
1183: }
1184: }
1.1 nicm 1185: }
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