Annotation of src/usr.bin/tmux/window.c, Revision 1.72
1.72 ! nicm 1: /* $OpenBSD: window.c,v 1.71 2012/01/30 09:39:34 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:
1.37 nicm 64: void window_pane_read_callback(struct bufferevent *, void *);
65: void window_pane_error_callback(struct bufferevent *, short, void *);
66:
1.1 nicm 67: RB_GENERATE(winlinks, winlink, entry, winlink_cmp);
68:
69: int
70: winlink_cmp(struct winlink *wl1, struct winlink *wl2)
71: {
72: return (wl1->idx - wl2->idx);
1.12 nicm 73: }
74:
1.64 nicm 75: RB_GENERATE(window_pane_tree, window_pane, tree_entry, window_pane_cmp);
76:
77: int
78: window_pane_cmp(struct window_pane *wp1, struct window_pane *wp2)
79: {
80: return (wp1->id - wp2->id);
81: }
82:
1.12 nicm 83: struct winlink *
84: winlink_find_by_window(struct winlinks *wwl, struct window *w)
85: {
86: struct winlink *wl;
87:
88: RB_FOREACH(wl, winlinks, wwl) {
89: if (wl->window == w)
90: return (wl);
91: }
92:
93: return (NULL);
1.1 nicm 94: }
95:
96: struct winlink *
97: winlink_find_by_index(struct winlinks *wwl, int idx)
98: {
99: struct winlink wl;
100:
101: if (idx < 0)
102: fatalx("bad index");
103:
104: wl.idx = idx;
105: return (RB_FIND(winlinks, wwl, &wl));
106: }
107:
1.71 nicm 108: struct winlink *
109: winlink_find_by_window_id(struct winlinks *wwl, u_int id)
110: {
111: struct winlink *wl;
112:
113: RB_FOREACH(wl, winlinks, wwl) {
114: if (wl->window->id == id)
115: return (wl);
116: }
117: return NULL;
118: }
119:
1.1 nicm 120: int
1.22 nicm 121: winlink_next_index(struct winlinks *wwl, int idx)
1.1 nicm 122: {
1.22 nicm 123: int i;
1.1 nicm 124:
1.22 nicm 125: i = idx;
126: do {
1.1 nicm 127: if (winlink_find_by_index(wwl, i) == NULL)
128: return (i);
1.22 nicm 129: if (i == INT_MAX)
130: i = 0;
131: else
132: i++;
133: } while (i != idx);
134: return (-1);
1.1 nicm 135: }
136:
137: u_int
138: winlink_count(struct winlinks *wwl)
139: {
140: struct winlink *wl;
141: u_int n;
142:
143: n = 0;
144: RB_FOREACH(wl, winlinks, wwl)
145: n++;
146:
147: return (n);
148: }
149:
150: struct winlink *
1.63 nicm 151: winlink_add(struct winlinks *wwl, int idx)
1.1 nicm 152: {
153: struct winlink *wl;
154:
1.22 nicm 155: if (idx < 0) {
156: if ((idx = winlink_next_index(wwl, -idx - 1)) == -1)
157: return (NULL);
158: } else if (winlink_find_by_index(wwl, idx) != NULL)
1.1 nicm 159: return (NULL);
160:
161: wl = xcalloc(1, sizeof *wl);
162: wl->idx = idx;
163: RB_INSERT(winlinks, wwl, wl);
164:
1.63 nicm 165: return (wl);
166: }
167:
168: void
169: winlink_set_window(struct winlink *wl, struct window *w)
170: {
171: wl->window = w;
1.1 nicm 172: w->references++;
173: }
174:
175: void
176: winlink_remove(struct winlinks *wwl, struct winlink *wl)
177: {
178: struct window *w = wl->window;
179:
180: RB_REMOVE(winlinks, wwl, wl);
1.40 nicm 181: if (wl->status_text != NULL)
182: xfree(wl->status_text);
1.1 nicm 183: xfree(wl);
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: }
275: return NULL;
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;
1.42 nicm 294:
1.1 nicm 295: w->sx = sx;
296: w->sy = sy;
297:
1.38 nicm 298: queue_window_name(w);
299:
1.7 nicm 300: options_init(&w->options, &global_w_options);
1.1 nicm 301:
302: for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
303: if (ARRAY_ITEM(&windows, i) == NULL) {
304: ARRAY_SET(&windows, i, w);
305: break;
306: }
307: }
308: if (i == ARRAY_LENGTH(&windows))
309: ARRAY_ADD(&windows, w);
310: w->references = 0;
311:
312: return (w);
313: }
314:
315: struct window *
1.23 nicm 316: window_create(const char *name, const char *cmd, const char *shell,
317: const char *cwd, struct environ *env, struct termios *tio,
318: u_int sx, u_int sy, u_int hlimit,char **cause)
1.1 nicm 319: {
1.14 nicm 320: struct window *w;
321: struct window_pane *wp;
1.1 nicm 322:
323: w = window_create1(sx, sy);
1.16 nicm 324: wp = window_add_pane(w, hlimit);
1.14 nicm 325: layout_init(w);
1.23 nicm 326: if (window_pane_spawn(wp, cmd, shell, cwd, env, tio, cause) != 0) {
1.1 nicm 327: window_destroy(w);
328: return (NULL);
329: }
330: w->active = TAILQ_FIRST(&w->panes);
331: if (name != NULL) {
332: w->name = xstrdup(name);
333: options_set_number(&w->options, "automatic-rename", 0);
334: } else
335: w->name = default_window_name(w);
336: return (w);
337: }
338:
339: void
340: window_destroy(struct window *w)
341: {
342: u_int i;
343:
344: if (window_index(w, &i) != 0)
345: fatalx("index not found");
346: ARRAY_SET(&windows, i, NULL);
347: while (!ARRAY_EMPTY(&windows) && ARRAY_LAST(&windows) == NULL)
348: ARRAY_TRUNC(&windows, 1);
349:
1.14 nicm 350: if (w->layout_root != NULL)
351: layout_free(w);
352:
1.38 nicm 353: evtimer_del(&w->name_timer);
354:
1.1 nicm 355: options_free(&w->options);
356:
357: window_destroy_panes(w);
358:
359: if (w->name != NULL)
360: xfree(w->name);
361: xfree(w);
1.72 ! nicm 362: }
! 363:
! 364: void
! 365: window_set_name(struct window *w, const char *new_name)
! 366: {
! 367: if (w->name != NULL)
! 368: xfree(w->name);
! 369: w->name = xstrdup(new_name);
1.1 nicm 370: }
371:
1.15 nicm 372: void
1.1 nicm 373: window_resize(struct window *w, u_int sx, u_int sy)
374: {
375: w->sx = sx;
376: w->sy = sy;
377: }
378:
379: void
380: window_set_active_pane(struct window *w, struct window_pane *wp)
381: {
1.59 nicm 382: if (wp == w->active)
383: return;
1.58 nicm 384: w->last = w->active;
1.1 nicm 385: w->active = wp;
1.10 nicm 386: while (!window_pane_visible(w->active)) {
1.1 nicm 387: w->active = TAILQ_PREV(w->active, window_panes, entry);
1.10 nicm 388: if (w->active == NULL)
389: w->active = TAILQ_LAST(&w->panes, window_panes);
390: if (w->active == wp)
391: return;
1.29 nicm 392: }
393: }
394:
1.66 nicm 395: struct window_pane *
396: window_get_active_at(struct window *w, u_int x, u_int y)
1.29 nicm 397: {
398: struct window_pane *wp;
399:
400: TAILQ_FOREACH(wp, &w->panes, entry) {
1.66 nicm 401: if (!window_pane_visible(wp))
1.29 nicm 402: continue;
1.66 nicm 403: if (x < wp->xoff || x > wp->xoff + wp->sx)
1.29 nicm 404: continue;
1.66 nicm 405: if (y < wp->yoff || y > wp->yoff + wp->sy)
1.29 nicm 406: continue;
1.66 nicm 407: return (wp);
408: }
409: return (NULL);
410: }
411:
412: void
413: window_set_active_at(struct window *w, u_int x, u_int y)
414: {
415: struct window_pane *wp;
416:
417: wp = window_get_active_at(w, x, y);
418: if (wp != NULL && wp != w->active)
1.29 nicm 419: window_set_active_pane(w, wp);
1.66 nicm 420: }
421:
422: struct window_pane *
423: window_find_string(struct window *w, const char *s)
424: {
425: u_int x, y;
426:
427: x = w->sx / 2;
428: y = w->sy / 2;
429:
430: if (strcasecmp(s, "top") == 0)
431: y = 0;
432: else if (strcasecmp(s, "bottom") == 0)
433: y = w->sy - 1;
434: else if (strcasecmp(s, "left") == 0)
435: x = 0;
436: else if (strcasecmp(s, "right") == 0)
437: x = w->sx - 1;
438: else if (strcasecmp(s, "top-left") == 0) {
439: x = 0;
440: y = 0;
441: } else if (strcasecmp(s, "top-right") == 0) {
442: x = w->sx - 1;
443: y = 0;
444: } else if (strcasecmp(s, "bottom-left") == 0) {
445: x = 0;
446: y = w->sy - 1;
447: } else if (strcasecmp(s, "bottom-right") == 0) {
448: x = w->sx - 1;
449: y = w->sy - 1;
450: } else
451: return (NULL);
452:
453: return (window_get_active_at(w, x, y));
1.1 nicm 454: }
455:
456: struct window_pane *
1.16 nicm 457: window_add_pane(struct window *w, u_int hlimit)
1.1 nicm 458: {
459: struct window_pane *wp;
460:
1.14 nicm 461: wp = window_pane_create(w, w->sx, w->sy, hlimit);
1.1 nicm 462: if (TAILQ_EMPTY(&w->panes))
463: TAILQ_INSERT_HEAD(&w->panes, wp, entry);
464: else
465: TAILQ_INSERT_AFTER(&w->panes, w->active, wp, entry);
466: return (wp);
467: }
468:
469: void
470: window_remove_pane(struct window *w, struct window_pane *wp)
471: {
1.57 nicm 472: if (wp == w->active) {
1.58 nicm 473: w->active = w->last;
474: w->last = NULL;
475: if (w->active == NULL) {
476: w->active = TAILQ_PREV(wp, window_panes, entry);
477: if (w->active == NULL)
478: w->active = TAILQ_NEXT(wp, entry);
479: }
480: } else if (wp == w->last)
481: w->last = NULL;
1.1 nicm 482:
483: TAILQ_REMOVE(&w->panes, wp, entry);
484: window_pane_destroy(wp);
485: }
486:
487: struct window_pane *
488: window_pane_at_index(struct window *w, u_int idx)
489: {
490: struct window_pane *wp;
491: u_int n;
492:
1.67 nicm 493: n = options_get_number(&w->options, "pane-base-index");
1.1 nicm 494: TAILQ_FOREACH(wp, &w->panes, entry) {
495: if (n == idx)
496: return (wp);
497: n++;
498: }
499: return (NULL);
1.53 nicm 500: }
501:
502: struct window_pane *
503: window_pane_next_by_number(struct window *w, struct window_pane *wp, u_int n)
504: {
505: for (; n > 0; n--) {
506: if ((wp = TAILQ_NEXT(wp, entry)) == NULL)
507: wp = TAILQ_FIRST(&w->panes);
508: }
509:
510: return (wp);
511: }
512:
513: struct window_pane *
514: window_pane_previous_by_number(struct window *w, struct window_pane *wp,
515: u_int n)
516: {
517: for (; n > 0; n--) {
518: if ((wp = TAILQ_PREV(wp, window_panes, entry)) == NULL)
519: wp = TAILQ_LAST(&w->panes, window_panes);
520: }
521:
522: return (wp);
1.13 nicm 523: }
524:
1.69 nicm 525: int
526: window_pane_index(struct window_pane *wp, u_int *i)
1.13 nicm 527: {
528: struct window_pane *wq;
1.69 nicm 529: struct window *w = wp->window;
1.13 nicm 530:
1.69 nicm 531: *i = options_get_number(&w->options, "pane-base-index");
1.13 nicm 532: TAILQ_FOREACH(wq, &w->panes, entry) {
1.69 nicm 533: if (wp == wq) {
534: return (0);
535: }
536: (*i)++;
1.13 nicm 537: }
1.69 nicm 538:
539: return (-1);
1.1 nicm 540: }
541:
542: u_int
543: window_count_panes(struct window *w)
544: {
545: struct window_pane *wp;
546: u_int n;
547:
548: n = 0;
549: TAILQ_FOREACH(wp, &w->panes, entry)
550: n++;
551: return (n);
552: }
553:
554: void
555: window_destroy_panes(struct window *w)
556: {
557: struct window_pane *wp;
558:
559: while (!TAILQ_EMPTY(&w->panes)) {
560: wp = TAILQ_FIRST(&w->panes);
561: TAILQ_REMOVE(&w->panes, wp, entry);
562: window_pane_destroy(wp);
563: }
1.61 nicm 564: }
565:
566: /* Return list of printable window flag symbols. No flags is just a space. */
567: char *
568: window_printable_flags(struct session *s, struct winlink *wl)
569: {
570: char flags[BUFSIZ];
571: int pos;
572:
573: pos = 0;
574: if (wl->flags & WINLINK_ACTIVITY)
575: flags[pos++] = '#';
576: if (wl->flags & WINLINK_BELL)
577: flags[pos++] = '!';
578: if (wl->flags & WINLINK_CONTENT)
579: flags[pos++] = '+';
580: if (wl->flags & WINLINK_SILENCE)
581: flags[pos++] = '~';
582: if (wl == s->curw)
583: flags[pos++] = '*';
584: if (wl == TAILQ_FIRST(&s->lastw))
585: flags[pos++] = '-';
586: if (pos == 0)
587: flags[pos++] = ' ';
588: flags[pos] = '\0';
589: return (xstrdup(flags));
1.1 nicm 590: }
591:
1.64 nicm 592: /* Find pane in global tree by id. */
593: struct window_pane *
594: window_pane_find_by_id(u_int id)
595: {
596: struct window_pane wp;
597:
598: wp.id = id;
599: return (RB_FIND(window_pane_tree, &all_window_panes, &wp));
600: }
601:
1.1 nicm 602: struct window_pane *
603: window_pane_create(struct window *w, u_int sx, u_int sy, u_int hlimit)
604: {
605: struct window_pane *wp;
606:
607: wp = xcalloc(1, sizeof *wp);
608: wp->window = w;
609:
1.71 nicm 610: wp->id = next_window_pane_id++;
1.64 nicm 611: RB_INSERT(window_pane_tree, &all_window_panes, wp);
612:
1.1 nicm 613: wp->cmd = NULL;
1.23 nicm 614: wp->shell = NULL;
1.1 nicm 615: wp->cwd = NULL;
616:
617: wp->fd = -1;
1.37 nicm 618: wp->event = NULL;
1.1 nicm 619:
620: wp->mode = NULL;
1.14 nicm 621:
622: wp->layout_cell = NULL;
1.1 nicm 623:
624: wp->xoff = 0;
1.42 nicm 625: wp->yoff = 0;
1.1 nicm 626:
627: wp->sx = sx;
628: wp->sy = sy;
629:
1.32 nicm 630: wp->pipe_fd = -1;
631: wp->pipe_off = 0;
1.36 nicm 632: wp->pipe_event = NULL;
1.32 nicm 633:
1.9 nicm 634: wp->saved_grid = NULL;
635:
1.1 nicm 636: screen_init(&wp->base, sx, sy, hlimit);
637: wp->screen = &wp->base;
638:
639: input_init(wp);
640:
641: return (wp);
642: }
643:
644: void
645: window_pane_destroy(struct window_pane *wp)
646: {
1.55 nicm 647: window_pane_reset_mode(wp);
648:
1.37 nicm 649: if (wp->fd != -1) {
1.70 nicm 650: bufferevent_free(wp->event);
1.1 nicm 651: close(wp->fd);
1.37 nicm 652: }
1.1 nicm 653:
654: input_free(wp);
655:
656: screen_free(&wp->base);
1.9 nicm 657: if (wp->saved_grid != NULL)
658: grid_destroy(wp->saved_grid);
1.1 nicm 659:
1.32 nicm 660: if (wp->pipe_fd != -1) {
1.70 nicm 661: bufferevent_free(wp->pipe_event);
1.32 nicm 662: close(wp->pipe_fd);
663: }
664:
1.64 nicm 665: RB_REMOVE(window_pane_tree, &all_window_panes, wp);
666:
1.1 nicm 667: if (wp->cwd != NULL)
668: xfree(wp->cwd);
1.23 nicm 669: if (wp->shell != NULL)
670: xfree(wp->shell);
1.1 nicm 671: if (wp->cmd != NULL)
672: xfree(wp->cmd);
673: xfree(wp);
674: }
675:
676: int
1.23 nicm 677: window_pane_spawn(struct window_pane *wp, const char *cmd, const char *shell,
1.21 nicm 678: const char *cwd, struct environ *env, struct termios *tio, char **cause)
1.1 nicm 679: {
1.47 nicm 680: struct winsize ws;
1.64 nicm 681: char *argv0, paneid[16];
1.47 nicm 682: const char *ptr;
683: struct termios tio2;
1.1 nicm 684:
1.37 nicm 685: if (wp->fd != -1) {
1.70 nicm 686: bufferevent_free(wp->event);
1.1 nicm 687: close(wp->fd);
1.37 nicm 688: }
1.1 nicm 689: if (cmd != NULL) {
690: if (wp->cmd != NULL)
691: xfree(wp->cmd);
692: wp->cmd = xstrdup(cmd);
693: }
1.23 nicm 694: if (shell != NULL) {
695: if (wp->shell != NULL)
696: xfree(wp->shell);
697: wp->shell = xstrdup(shell);
698: }
1.1 nicm 699: if (cwd != NULL) {
700: if (wp->cwd != NULL)
701: xfree(wp->cwd);
702: wp->cwd = xstrdup(cwd);
703: }
704:
705: memset(&ws, 0, sizeof ws);
706: ws.ws_col = screen_size_x(&wp->base);
707: ws.ws_row = screen_size_y(&wp->base);
708:
1.42 nicm 709: switch (wp->pid = forkpty(&wp->fd, wp->tty, NULL, &ws)) {
1.1 nicm 710: case -1:
711: wp->fd = -1;
712: xasprintf(cause, "%s: %s", cmd, strerror(errno));
713: return (-1);
714: case 0:
715: if (chdir(wp->cwd) != 0)
716: chdir("/");
1.25 nicm 717:
718: if (tcgetattr(STDIN_FILENO, &tio2) != 0)
719: fatal("tcgetattr failed");
720: if (tio != NULL)
721: memcpy(tio2.c_cc, tio->c_cc, sizeof tio2.c_cc);
722: tio2.c_cc[VERASE] = '\177';
723: if (tcsetattr(STDIN_FILENO, TCSANOW, &tio2) != 0)
724: fatal("tcgetattr failed");
1.18 nicm 725:
1.56 nicm 726: closefrom(STDERR_FILENO + 1);
727:
1.64 nicm 728: xsnprintf(paneid, sizeof paneid, "%%%u", wp->id);
729: environ_set(env, "TMUX_PANE", paneid);
1.47 nicm 730: environ_push(env);
1.18 nicm 731:
1.54 nicm 732: clear_signals(1);
1.1 nicm 733: log_close();
734:
1.8 nicm 735: if (*wp->cmd != '\0') {
1.24 nicm 736: /* Set SHELL but only if it is currently not useful. */
737: shell = getenv("SHELL");
1.68 nicm 738: if (checkshell(shell))
1.24 nicm 739: setenv("SHELL", wp->shell, 1);
740:
1.8 nicm 741: execl(_PATH_BSHELL, "sh", "-c", wp->cmd, (char *) NULL);
742: fatal("execl failed");
743: }
744:
745: /* No command; fork a login shell. */
1.23 nicm 746: ptr = strrchr(wp->shell, '/');
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);
1.24 nicm 751: setenv("SHELL", wp->shell, 1);
1.23 nicm 752: execl(wp->shell, argv0, (char *) NULL);
1.1 nicm 753: fatal("execl failed");
754: }
755:
1.62 nicm 756: setblocking(wp->fd, 0);
757:
1.37 nicm 758: wp->event = bufferevent_new(wp->fd,
759: window_pane_read_callback, NULL, window_pane_error_callback, wp);
760: bufferevent_enable(wp->event, EV_READ|EV_WRITE);
1.1 nicm 761:
762: return (0);
763: }
764:
1.41 nicm 765: /* ARGSUSED */
1.15 nicm 766: void
1.37 nicm 767: window_pane_read_callback(unused struct bufferevent *bufev, void *data)
768: {
1.46 nicm 769: struct window_pane *wp = data;
770: char *new_data;
771: size_t new_size;
772:
773: new_size = EVBUFFER_LENGTH(wp->event->input) - wp->pipe_off;
774: if (wp->pipe_fd != -1 && new_size > 0) {
775: new_data = EVBUFFER_DATA(wp->event->input);
776: bufferevent_write(wp->pipe_event, new_data, new_size);
777: }
778:
779: input_parse(wp);
1.37 nicm 780:
1.46 nicm 781: wp->pipe_off = EVBUFFER_LENGTH(wp->event->input);
1.60 nicm 782:
783: /*
784: * If we get here, we're not outputting anymore, so set the silence
785: * flag on the window.
786: */
787: wp->window->flags |= WINDOW_SILENCE;
788: if (gettimeofday(&wp->window->silence_timer, NULL) != 0)
789: fatal("gettimeofday failed.");
1.37 nicm 790: }
791:
1.41 nicm 792: /* ARGSUSED */
1.37 nicm 793: void
794: window_pane_error_callback(
795: unused struct bufferevent *bufev, unused short what, void *data)
796: {
797: struct window_pane *wp = data;
798:
1.39 nicm 799: server_destroy_pane(wp);
1.37 nicm 800: }
801:
802: void
1.1 nicm 803: window_pane_resize(struct window_pane *wp, u_int sx, u_int sy)
804: {
805: struct winsize ws;
806:
807: if (sx == wp->sx && sy == wp->sy)
1.15 nicm 808: return;
1.1 nicm 809: wp->sx = sx;
810: wp->sy = sy;
811:
812: memset(&ws, 0, sizeof ws);
813: ws.ws_col = sx;
814: ws.ws_row = sy;
815:
816: screen_resize(&wp->base, sx, sy);
817: if (wp->mode != NULL)
818: wp->mode->resize(wp, sx, sy);
819:
820: if (wp->fd != -1 && ioctl(wp->fd, TIOCSWINSZ, &ws) == -1)
821: fatal("ioctl failed");
1.44 nicm 822: }
823:
824: /*
825: * Enter alternative screen mode. A copy of the visible screen is saved and the
826: * history is not updated
827: */
828: void
829: window_pane_alternate_on(struct window_pane *wp, struct grid_cell *gc)
830: {
831: struct screen *s = &wp->base;
832: u_int sx, sy;
833:
834: if (wp->saved_grid != NULL)
835: return;
836: if (!options_get_number(&wp->window->options, "alternate-screen"))
837: return;
838: sx = screen_size_x(s);
839: sy = screen_size_y(s);
840:
841: wp->saved_grid = grid_create(sx, sy, 0);
842: grid_duplicate_lines(wp->saved_grid, 0, s->grid, screen_hsize(s), sy);
843: wp->saved_cx = s->cx;
844: wp->saved_cy = s->cy;
845: memcpy(&wp->saved_cell, gc, sizeof wp->saved_cell);
846:
847: grid_view_clear(s->grid, 0, 0, sx, sy);
848:
849: wp->base.grid->flags &= ~GRID_HISTORY;
850:
851: wp->flags |= PANE_REDRAW;
852: }
853:
854: /* Exit alternate screen mode and restore the copied grid. */
855: void
856: window_pane_alternate_off(struct window_pane *wp, struct grid_cell *gc)
857: {
858: struct screen *s = &wp->base;
859: u_int sx, sy;
860:
861: if (wp->saved_grid == NULL)
862: return;
863: if (!options_get_number(&wp->window->options, "alternate-screen"))
864: return;
865: sx = screen_size_x(s);
866: sy = screen_size_y(s);
867:
868: /*
869: * If the current size is bigger, temporarily resize to the old size
870: * before copying back.
871: */
872: if (sy > wp->saved_grid->sy)
873: screen_resize(s, sx, wp->saved_grid->sy);
874:
875: /* Restore the grid, cursor position and cell. */
876: grid_duplicate_lines(s->grid, screen_hsize(s), wp->saved_grid, 0, sy);
877: s->cx = wp->saved_cx;
878: if (s->cx > screen_size_x(s) - 1)
879: s->cx = screen_size_x(s) - 1;
880: s->cy = wp->saved_cy;
881: if (s->cy > screen_size_y(s) - 1)
882: s->cy = screen_size_y(s) - 1;
883: memcpy(gc, &wp->saved_cell, sizeof *gc);
884:
885: /*
886: * Turn history back on (so resize can use it) and then resize back to
887: * the current size.
888: */
889: wp->base.grid->flags |= GRID_HISTORY;
890: if (sy > wp->saved_grid->sy)
891: screen_resize(s, sx, sy);
892:
893: grid_destroy(wp->saved_grid);
894: wp->saved_grid = NULL;
895:
896: wp->flags |= PANE_REDRAW;
1.1 nicm 897: }
898:
899: int
900: window_pane_set_mode(struct window_pane *wp, const struct window_mode *mode)
901: {
902: struct screen *s;
903:
1.15 nicm 904: if (wp->mode != NULL)
1.1 nicm 905: return (1);
906: wp->mode = mode;
907:
908: if ((s = wp->mode->init(wp)) != NULL)
909: wp->screen = s;
1.34 nicm 910: wp->flags |= PANE_REDRAW;
1.1 nicm 911: return (0);
912: }
913:
914: void
915: window_pane_reset_mode(struct window_pane *wp)
916: {
917: if (wp->mode == NULL)
918: return;
919:
920: wp->mode->free(wp);
921: wp->mode = NULL;
922:
923: wp->screen = &wp->base;
1.34 nicm 924: wp->flags |= PANE_REDRAW;
1.1 nicm 925: }
926:
927: void
1.51 nicm 928: window_pane_key(struct window_pane *wp, struct session *sess, int key)
1.1 nicm 929: {
1.27 nicm 930: struct window_pane *wp2;
931:
1.30 nicm 932: if (!window_pane_visible(wp))
1.3 nicm 933: return;
934:
1.1 nicm 935: if (wp->mode != NULL) {
936: if (wp->mode->key != NULL)
1.51 nicm 937: wp->mode->key(wp, sess, key);
1.27 nicm 938: return;
1.30 nicm 939: }
1.27 nicm 940:
1.30 nicm 941: if (wp->fd == -1)
942: return;
1.27 nicm 943: input_key(wp, key);
944: if (options_get_number(&wp->window->options, "synchronize-panes")) {
945: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
946: if (wp2 == wp || wp2->mode != NULL)
947: continue;
948: if (wp2->fd != -1 && window_pane_visible(wp2))
949: input_key(wp2, key);
950: }
951: }
1.1 nicm 952: }
953:
954: void
955: window_pane_mouse(
1.51 nicm 956: struct window_pane *wp, struct session *sess, struct mouse_event *m)
1.1 nicm 957: {
1.30 nicm 958: if (!window_pane_visible(wp))
1.3 nicm 959: return;
960:
1.31 nicm 961: if (m->x < wp->xoff || m->x >= wp->xoff + wp->sx)
1.1 nicm 962: return;
1.31 nicm 963: if (m->y < wp->yoff || m->y >= wp->yoff + wp->sy)
1.1 nicm 964: return;
1.31 nicm 965: m->x -= wp->xoff;
966: m->y -= wp->yoff;
1.1 nicm 967:
968: if (wp->mode != NULL) {
1.65 nicm 969: if (wp->mode->mouse != NULL &&
970: options_get_number(&wp->window->options, "mode-mouse"))
1.51 nicm 971: wp->mode->mouse(wp, sess, m);
1.30 nicm 972: } else if (wp->fd != -1)
1.31 nicm 973: input_mouse(wp, m);
1.10 nicm 974: }
975:
976: int
977: window_pane_visible(struct window_pane *wp)
978: {
979: struct window *w = wp->window;
980:
981: if (wp->xoff >= w->sx || wp->yoff >= w->sy)
982: return (0);
983: if (wp->xoff + wp->sx > w->sx || wp->yoff + wp->sy > w->sy)
984: return (0);
985: return (1);
1.1 nicm 986: }
987:
988: char *
1.5 nicm 989: window_pane_search(struct window_pane *wp, const char *searchstr, u_int *lineno)
1.1 nicm 990: {
1.4 nicm 991: struct screen *s = &wp->base;
1.5 nicm 992: char *newsearchstr, *line, *msg;
1.4 nicm 993: u_int i;
994:
1.5 nicm 995: msg = NULL;
996: xasprintf(&newsearchstr, "*%s*", searchstr);
997:
1.4 nicm 998: for (i = 0; i < screen_size_y(s); i++) {
999: line = grid_view_string_cells(s->grid, 0, i, screen_size_x(s));
1.5 nicm 1000: if (fnmatch(newsearchstr, line, 0) == 0) {
1001: msg = line;
1002: if (lineno != NULL)
1003: *lineno = i;
1004: break;
1005: }
1.4 nicm 1006: xfree(line);
1007: }
1.5 nicm 1008:
1009: xfree(newsearchstr);
1010: return (msg);
1.45 nicm 1011: }
1012:
1013: /* Find the pane directly above another. */
1014: struct window_pane *
1015: window_pane_find_up(struct window_pane *wp)
1016: {
1017: struct window_pane *wp2;
1018: u_int left, top;
1019:
1020: if (wp == NULL || !window_pane_visible(wp))
1021: return (NULL);
1022:
1023: top = wp->yoff;
1024: if (top == 0)
1025: top = wp->window->sy + 1;
1026: left = wp->xoff;
1027:
1028: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
1029: if (!window_pane_visible(wp2))
1030: continue;
1031: if (wp2->yoff + wp2->sy + 1 != top)
1032: continue;
1033: if (left >= wp2->xoff && left <= wp2->xoff + wp2->sx)
1034: return (wp2);
1035: }
1036: return (NULL);
1037: }
1038:
1039: /* Find the pane directly below another. */
1040: struct window_pane *
1041: window_pane_find_down(struct window_pane *wp)
1042: {
1043: struct window_pane *wp2;
1044: u_int left, bottom;
1045:
1046: if (wp == NULL || !window_pane_visible(wp))
1047: return (NULL);
1048:
1049: bottom = wp->yoff + wp->sy + 1;
1050: if (bottom >= wp->window->sy)
1051: bottom = 0;
1052: left = wp->xoff;
1053:
1054: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
1055: if (!window_pane_visible(wp2))
1056: continue;
1057: if (wp2->yoff != bottom)
1058: continue;
1059: if (left >= wp2->xoff && left <= wp2->xoff + wp2->sx)
1060: return (wp2);
1061: }
1062: return (NULL);
1063: }
1064:
1065: /*
1066: * Find the pane directly to the left of another, adjacent to the left side and
1067: * containing the top edge.
1068: */
1069: struct window_pane *
1070: window_pane_find_left(struct window_pane *wp)
1071: {
1072: struct window_pane *wp2;
1073: u_int left, top;
1074:
1075: if (wp == NULL || !window_pane_visible(wp))
1076: return (NULL);
1077:
1078: left = wp->xoff;
1079: if (left == 0)
1080: left = wp->window->sx + 1;
1081: top = wp->yoff;
1082:
1083: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
1084: if (!window_pane_visible(wp2))
1085: continue;
1086: if (wp2->xoff + wp2->sx + 1 != left)
1087: continue;
1088: if (top >= wp2->yoff && top <= wp2->yoff + wp2->sy)
1089: return (wp2);
1090: }
1091: return (NULL);
1092: }
1093:
1094: /*
1095: * Find the pane directly to the right of another, that is adjacent to the
1096: * right edge and including the top edge.
1097: */
1098: struct window_pane *
1099: window_pane_find_right(struct window_pane *wp)
1100: {
1101: struct window_pane *wp2;
1102: u_int right, top;
1103:
1104: if (wp == NULL || !window_pane_visible(wp))
1105: return (NULL);
1106:
1107: right = wp->xoff + wp->sx + 1;
1108: if (right >= wp->window->sx)
1109: right = 0;
1110: top = wp->yoff;
1111:
1112: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
1113: if (!window_pane_visible(wp2))
1114: continue;
1115: if (wp2->xoff != right)
1116: continue;
1117: if (top >= wp2->yoff && top <= wp2->yoff + wp2->sy)
1118: return (wp2);
1119: }
1120: return (NULL);
1.1 nicm 1121: }
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