Annotation of src/usr.bin/tmux/window.c, Revision 1.74
1.74 ! nicm 1: /* $OpenBSD: window.c,v 1.73 2012/03/17 18:24:07 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:
1.73 nicm 353: if (event_initialized(&w->name_timer))
354: evtimer_del(&w->name_timer);
1.38 nicm 355:
1.1 nicm 356: options_free(&w->options);
357:
358: window_destroy_panes(w);
359:
360: if (w->name != NULL)
361: xfree(w->name);
362: xfree(w);
1.72 nicm 363: }
364:
365: void
366: window_set_name(struct window *w, const char *new_name)
367: {
368: if (w->name != NULL)
369: xfree(w->name);
370: w->name = xstrdup(new_name);
1.74 ! nicm 371: notify_window_renamed(w);
1.1 nicm 372: }
373:
1.15 nicm 374: void
1.1 nicm 375: window_resize(struct window *w, u_int sx, u_int sy)
376: {
377: w->sx = sx;
378: w->sy = sy;
379: }
380:
381: void
382: window_set_active_pane(struct window *w, struct window_pane *wp)
383: {
1.59 nicm 384: if (wp == w->active)
385: return;
1.58 nicm 386: w->last = w->active;
1.1 nicm 387: w->active = wp;
1.10 nicm 388: while (!window_pane_visible(w->active)) {
1.1 nicm 389: w->active = TAILQ_PREV(w->active, window_panes, entry);
1.10 nicm 390: if (w->active == NULL)
391: w->active = TAILQ_LAST(&w->panes, window_panes);
392: if (w->active == wp)
393: return;
1.29 nicm 394: }
395: }
396:
1.66 nicm 397: struct window_pane *
398: window_get_active_at(struct window *w, u_int x, u_int y)
1.29 nicm 399: {
400: struct window_pane *wp;
401:
402: TAILQ_FOREACH(wp, &w->panes, entry) {
1.66 nicm 403: if (!window_pane_visible(wp))
1.29 nicm 404: continue;
1.66 nicm 405: if (x < wp->xoff || x > wp->xoff + wp->sx)
1.29 nicm 406: continue;
1.66 nicm 407: if (y < wp->yoff || y > wp->yoff + wp->sy)
1.29 nicm 408: continue;
1.66 nicm 409: return (wp);
410: }
411: return (NULL);
412: }
413:
414: void
415: window_set_active_at(struct window *w, u_int x, u_int y)
416: {
417: struct window_pane *wp;
418:
419: wp = window_get_active_at(w, x, y);
420: if (wp != NULL && wp != w->active)
1.29 nicm 421: window_set_active_pane(w, wp);
1.66 nicm 422: }
423:
424: struct window_pane *
425: window_find_string(struct window *w, const char *s)
426: {
427: u_int x, y;
428:
429: x = w->sx / 2;
430: y = w->sy / 2;
431:
432: if (strcasecmp(s, "top") == 0)
433: y = 0;
434: else if (strcasecmp(s, "bottom") == 0)
435: y = w->sy - 1;
436: else if (strcasecmp(s, "left") == 0)
437: x = 0;
438: else if (strcasecmp(s, "right") == 0)
439: x = w->sx - 1;
440: else if (strcasecmp(s, "top-left") == 0) {
441: x = 0;
442: y = 0;
443: } else if (strcasecmp(s, "top-right") == 0) {
444: x = w->sx - 1;
445: y = 0;
446: } else if (strcasecmp(s, "bottom-left") == 0) {
447: x = 0;
448: y = w->sy - 1;
449: } else if (strcasecmp(s, "bottom-right") == 0) {
450: x = w->sx - 1;
451: y = w->sy - 1;
452: } else
453: return (NULL);
454:
455: return (window_get_active_at(w, x, y));
1.1 nicm 456: }
457:
458: struct window_pane *
1.16 nicm 459: window_add_pane(struct window *w, u_int hlimit)
1.1 nicm 460: {
461: struct window_pane *wp;
462:
1.14 nicm 463: wp = window_pane_create(w, w->sx, w->sy, hlimit);
1.1 nicm 464: if (TAILQ_EMPTY(&w->panes))
465: TAILQ_INSERT_HEAD(&w->panes, wp, entry);
466: else
467: TAILQ_INSERT_AFTER(&w->panes, w->active, wp, entry);
468: return (wp);
469: }
470:
471: void
472: window_remove_pane(struct window *w, struct window_pane *wp)
473: {
1.57 nicm 474: if (wp == w->active) {
1.58 nicm 475: w->active = w->last;
476: w->last = NULL;
477: if (w->active == NULL) {
478: w->active = TAILQ_PREV(wp, window_panes, entry);
479: if (w->active == NULL)
480: w->active = TAILQ_NEXT(wp, entry);
481: }
482: } else if (wp == w->last)
483: w->last = NULL;
1.1 nicm 484:
485: TAILQ_REMOVE(&w->panes, wp, entry);
486: window_pane_destroy(wp);
487: }
488:
489: struct window_pane *
490: window_pane_at_index(struct window *w, u_int idx)
491: {
492: struct window_pane *wp;
493: u_int n;
494:
1.67 nicm 495: n = options_get_number(&w->options, "pane-base-index");
1.1 nicm 496: TAILQ_FOREACH(wp, &w->panes, entry) {
497: if (n == idx)
498: return (wp);
499: n++;
500: }
501: return (NULL);
1.53 nicm 502: }
503:
504: struct window_pane *
505: window_pane_next_by_number(struct window *w, struct window_pane *wp, u_int n)
506: {
507: for (; n > 0; n--) {
508: if ((wp = TAILQ_NEXT(wp, entry)) == NULL)
509: wp = TAILQ_FIRST(&w->panes);
510: }
511:
512: return (wp);
513: }
514:
515: struct window_pane *
516: window_pane_previous_by_number(struct window *w, struct window_pane *wp,
517: u_int n)
518: {
519: for (; n > 0; n--) {
520: if ((wp = TAILQ_PREV(wp, window_panes, entry)) == NULL)
521: wp = TAILQ_LAST(&w->panes, window_panes);
522: }
523:
524: return (wp);
1.13 nicm 525: }
526:
1.69 nicm 527: int
528: window_pane_index(struct window_pane *wp, u_int *i)
1.13 nicm 529: {
530: struct window_pane *wq;
1.69 nicm 531: struct window *w = wp->window;
1.13 nicm 532:
1.69 nicm 533: *i = options_get_number(&w->options, "pane-base-index");
1.13 nicm 534: TAILQ_FOREACH(wq, &w->panes, entry) {
1.69 nicm 535: if (wp == wq) {
536: return (0);
537: }
538: (*i)++;
1.13 nicm 539: }
1.69 nicm 540:
541: return (-1);
1.1 nicm 542: }
543:
544: u_int
545: window_count_panes(struct window *w)
546: {
547: struct window_pane *wp;
548: u_int n;
549:
550: n = 0;
551: TAILQ_FOREACH(wp, &w->panes, entry)
552: n++;
553: return (n);
554: }
555:
556: void
557: window_destroy_panes(struct window *w)
558: {
559: struct window_pane *wp;
560:
561: while (!TAILQ_EMPTY(&w->panes)) {
562: wp = TAILQ_FIRST(&w->panes);
563: TAILQ_REMOVE(&w->panes, wp, entry);
564: window_pane_destroy(wp);
565: }
1.61 nicm 566: }
567:
568: /* Return list of printable window flag symbols. No flags is just a space. */
569: char *
570: window_printable_flags(struct session *s, struct winlink *wl)
571: {
572: char flags[BUFSIZ];
573: int pos;
574:
575: pos = 0;
576: if (wl->flags & WINLINK_ACTIVITY)
577: flags[pos++] = '#';
578: if (wl->flags & WINLINK_BELL)
579: flags[pos++] = '!';
580: if (wl->flags & WINLINK_CONTENT)
581: flags[pos++] = '+';
582: if (wl->flags & WINLINK_SILENCE)
583: flags[pos++] = '~';
584: if (wl == s->curw)
585: flags[pos++] = '*';
586: if (wl == TAILQ_FIRST(&s->lastw))
587: flags[pos++] = '-';
588: if (pos == 0)
589: flags[pos++] = ' ';
590: flags[pos] = '\0';
591: return (xstrdup(flags));
1.1 nicm 592: }
593:
1.64 nicm 594: /* Find pane in global tree by id. */
595: struct window_pane *
596: window_pane_find_by_id(u_int id)
597: {
598: struct window_pane wp;
599:
600: wp.id = id;
601: return (RB_FIND(window_pane_tree, &all_window_panes, &wp));
602: }
603:
1.1 nicm 604: struct window_pane *
605: window_pane_create(struct window *w, u_int sx, u_int sy, u_int hlimit)
606: {
607: struct window_pane *wp;
608:
609: wp = xcalloc(1, sizeof *wp);
610: wp->window = w;
611:
1.71 nicm 612: wp->id = next_window_pane_id++;
1.64 nicm 613: RB_INSERT(window_pane_tree, &all_window_panes, wp);
614:
1.1 nicm 615: wp->cmd = NULL;
1.23 nicm 616: wp->shell = NULL;
1.1 nicm 617: wp->cwd = NULL;
618:
619: wp->fd = -1;
1.37 nicm 620: wp->event = NULL;
1.1 nicm 621:
622: wp->mode = NULL;
1.14 nicm 623:
624: wp->layout_cell = NULL;
1.1 nicm 625:
626: wp->xoff = 0;
1.42 nicm 627: wp->yoff = 0;
1.1 nicm 628:
629: wp->sx = sx;
630: wp->sy = sy;
631:
1.32 nicm 632: wp->pipe_fd = -1;
633: wp->pipe_off = 0;
1.36 nicm 634: wp->pipe_event = NULL;
1.32 nicm 635:
1.9 nicm 636: wp->saved_grid = NULL;
637:
1.1 nicm 638: screen_init(&wp->base, sx, sy, hlimit);
639: wp->screen = &wp->base;
640:
641: input_init(wp);
642:
643: return (wp);
644: }
645:
646: void
647: window_pane_destroy(struct window_pane *wp)
648: {
1.55 nicm 649: window_pane_reset_mode(wp);
650:
1.37 nicm 651: if (wp->fd != -1) {
1.70 nicm 652: bufferevent_free(wp->event);
1.1 nicm 653: close(wp->fd);
1.37 nicm 654: }
1.1 nicm 655:
656: input_free(wp);
657:
658: screen_free(&wp->base);
1.9 nicm 659: if (wp->saved_grid != NULL)
660: grid_destroy(wp->saved_grid);
1.1 nicm 661:
1.32 nicm 662: if (wp->pipe_fd != -1) {
1.70 nicm 663: bufferevent_free(wp->pipe_event);
1.32 nicm 664: close(wp->pipe_fd);
665: }
666:
1.64 nicm 667: RB_REMOVE(window_pane_tree, &all_window_panes, wp);
668:
1.1 nicm 669: if (wp->cwd != NULL)
670: xfree(wp->cwd);
1.23 nicm 671: if (wp->shell != NULL)
672: xfree(wp->shell);
1.1 nicm 673: if (wp->cmd != NULL)
674: xfree(wp->cmd);
675: xfree(wp);
676: }
677:
678: int
1.23 nicm 679: window_pane_spawn(struct window_pane *wp, const char *cmd, const char *shell,
1.21 nicm 680: const char *cwd, struct environ *env, struct termios *tio, char **cause)
1.1 nicm 681: {
1.47 nicm 682: struct winsize ws;
1.64 nicm 683: char *argv0, paneid[16];
1.47 nicm 684: const char *ptr;
685: struct termios tio2;
1.1 nicm 686:
1.37 nicm 687: if (wp->fd != -1) {
1.70 nicm 688: bufferevent_free(wp->event);
1.1 nicm 689: close(wp->fd);
1.37 nicm 690: }
1.1 nicm 691: if (cmd != NULL) {
692: if (wp->cmd != NULL)
693: xfree(wp->cmd);
694: wp->cmd = xstrdup(cmd);
695: }
1.23 nicm 696: if (shell != NULL) {
697: if (wp->shell != NULL)
698: xfree(wp->shell);
699: wp->shell = xstrdup(shell);
700: }
1.1 nicm 701: if (cwd != NULL) {
702: if (wp->cwd != NULL)
703: xfree(wp->cwd);
704: wp->cwd = xstrdup(cwd);
705: }
706:
707: memset(&ws, 0, sizeof ws);
708: ws.ws_col = screen_size_x(&wp->base);
709: ws.ws_row = screen_size_y(&wp->base);
710:
1.42 nicm 711: switch (wp->pid = forkpty(&wp->fd, wp->tty, NULL, &ws)) {
1.1 nicm 712: case -1:
713: wp->fd = -1;
714: xasprintf(cause, "%s: %s", cmd, strerror(errno));
715: return (-1);
716: case 0:
717: if (chdir(wp->cwd) != 0)
718: chdir("/");
1.25 nicm 719:
720: if (tcgetattr(STDIN_FILENO, &tio2) != 0)
721: fatal("tcgetattr failed");
722: if (tio != NULL)
723: memcpy(tio2.c_cc, tio->c_cc, sizeof tio2.c_cc);
724: tio2.c_cc[VERASE] = '\177';
725: if (tcsetattr(STDIN_FILENO, TCSANOW, &tio2) != 0)
726: fatal("tcgetattr failed");
1.18 nicm 727:
1.56 nicm 728: closefrom(STDERR_FILENO + 1);
729:
1.64 nicm 730: xsnprintf(paneid, sizeof paneid, "%%%u", wp->id);
731: environ_set(env, "TMUX_PANE", paneid);
1.47 nicm 732: environ_push(env);
1.18 nicm 733:
1.54 nicm 734: clear_signals(1);
1.1 nicm 735: log_close();
736:
1.8 nicm 737: if (*wp->cmd != '\0') {
1.24 nicm 738: /* Set SHELL but only if it is currently not useful. */
739: shell = getenv("SHELL");
1.68 nicm 740: if (checkshell(shell))
1.24 nicm 741: setenv("SHELL", wp->shell, 1);
742:
1.8 nicm 743: execl(_PATH_BSHELL, "sh", "-c", wp->cmd, (char *) NULL);
744: fatal("execl failed");
745: }
746:
747: /* No command; fork a login shell. */
1.23 nicm 748: ptr = strrchr(wp->shell, '/');
749: if (ptr != NULL && *(ptr + 1) != '\0')
1.8 nicm 750: xasprintf(&argv0, "-%s", ptr + 1);
751: else
1.23 nicm 752: xasprintf(&argv0, "-%s", wp->shell);
1.24 nicm 753: setenv("SHELL", wp->shell, 1);
1.23 nicm 754: execl(wp->shell, argv0, (char *) NULL);
1.1 nicm 755: fatal("execl failed");
756: }
757:
1.62 nicm 758: setblocking(wp->fd, 0);
759:
1.37 nicm 760: wp->event = bufferevent_new(wp->fd,
761: window_pane_read_callback, NULL, window_pane_error_callback, wp);
762: bufferevent_enable(wp->event, EV_READ|EV_WRITE);
1.1 nicm 763:
764: return (0);
765: }
766:
1.41 nicm 767: /* ARGSUSED */
1.15 nicm 768: void
1.37 nicm 769: window_pane_read_callback(unused struct bufferevent *bufev, void *data)
770: {
1.46 nicm 771: struct window_pane *wp = data;
772: char *new_data;
773: size_t new_size;
774:
775: new_size = EVBUFFER_LENGTH(wp->event->input) - wp->pipe_off;
776: if (wp->pipe_fd != -1 && new_size > 0) {
777: new_data = EVBUFFER_DATA(wp->event->input);
778: bufferevent_write(wp->pipe_event, new_data, new_size);
779: }
780:
781: input_parse(wp);
1.37 nicm 782:
1.46 nicm 783: wp->pipe_off = EVBUFFER_LENGTH(wp->event->input);
1.60 nicm 784:
785: /*
786: * If we get here, we're not outputting anymore, so set the silence
787: * flag on the window.
788: */
789: wp->window->flags |= WINDOW_SILENCE;
790: if (gettimeofday(&wp->window->silence_timer, NULL) != 0)
791: fatal("gettimeofday failed.");
1.37 nicm 792: }
793:
1.41 nicm 794: /* ARGSUSED */
1.37 nicm 795: void
796: window_pane_error_callback(
797: unused struct bufferevent *bufev, unused short what, void *data)
798: {
799: struct window_pane *wp = data;
800:
1.39 nicm 801: server_destroy_pane(wp);
1.37 nicm 802: }
803:
804: void
1.1 nicm 805: window_pane_resize(struct window_pane *wp, u_int sx, u_int sy)
806: {
807: struct winsize ws;
808:
809: if (sx == wp->sx && sy == wp->sy)
1.15 nicm 810: return;
1.1 nicm 811: wp->sx = sx;
812: wp->sy = sy;
813:
814: memset(&ws, 0, sizeof ws);
815: ws.ws_col = sx;
816: ws.ws_row = sy;
817:
818: screen_resize(&wp->base, sx, sy);
819: if (wp->mode != NULL)
820: wp->mode->resize(wp, sx, sy);
821:
822: if (wp->fd != -1 && ioctl(wp->fd, TIOCSWINSZ, &ws) == -1)
823: fatal("ioctl failed");
1.44 nicm 824: }
825:
826: /*
827: * Enter alternative screen mode. A copy of the visible screen is saved and the
828: * history is not updated
829: */
830: void
831: window_pane_alternate_on(struct window_pane *wp, struct grid_cell *gc)
832: {
833: struct screen *s = &wp->base;
834: u_int sx, sy;
835:
836: if (wp->saved_grid != NULL)
837: return;
838: if (!options_get_number(&wp->window->options, "alternate-screen"))
839: return;
840: sx = screen_size_x(s);
841: sy = screen_size_y(s);
842:
843: wp->saved_grid = grid_create(sx, sy, 0);
844: grid_duplicate_lines(wp->saved_grid, 0, s->grid, screen_hsize(s), sy);
845: wp->saved_cx = s->cx;
846: wp->saved_cy = s->cy;
847: memcpy(&wp->saved_cell, gc, sizeof wp->saved_cell);
848:
849: grid_view_clear(s->grid, 0, 0, sx, sy);
850:
851: wp->base.grid->flags &= ~GRID_HISTORY;
852:
853: wp->flags |= PANE_REDRAW;
854: }
855:
856: /* Exit alternate screen mode and restore the copied grid. */
857: void
858: window_pane_alternate_off(struct window_pane *wp, struct grid_cell *gc)
859: {
860: struct screen *s = &wp->base;
861: u_int sx, sy;
862:
863: if (wp->saved_grid == NULL)
864: return;
865: if (!options_get_number(&wp->window->options, "alternate-screen"))
866: return;
867: sx = screen_size_x(s);
868: sy = screen_size_y(s);
869:
870: /*
871: * If the current size is bigger, temporarily resize to the old size
872: * before copying back.
873: */
874: if (sy > wp->saved_grid->sy)
875: screen_resize(s, sx, wp->saved_grid->sy);
876:
877: /* Restore the grid, cursor position and cell. */
878: grid_duplicate_lines(s->grid, screen_hsize(s), wp->saved_grid, 0, sy);
879: s->cx = wp->saved_cx;
880: if (s->cx > screen_size_x(s) - 1)
881: s->cx = screen_size_x(s) - 1;
882: s->cy = wp->saved_cy;
883: if (s->cy > screen_size_y(s) - 1)
884: s->cy = screen_size_y(s) - 1;
885: memcpy(gc, &wp->saved_cell, sizeof *gc);
886:
887: /*
888: * Turn history back on (so resize can use it) and then resize back to
889: * the current size.
890: */
891: wp->base.grid->flags |= GRID_HISTORY;
892: if (sy > wp->saved_grid->sy)
893: screen_resize(s, sx, sy);
894:
895: grid_destroy(wp->saved_grid);
896: wp->saved_grid = NULL;
897:
898: wp->flags |= PANE_REDRAW;
1.1 nicm 899: }
900:
901: int
902: window_pane_set_mode(struct window_pane *wp, const struct window_mode *mode)
903: {
904: struct screen *s;
905:
1.15 nicm 906: if (wp->mode != NULL)
1.1 nicm 907: return (1);
908: wp->mode = mode;
909:
910: if ((s = wp->mode->init(wp)) != NULL)
911: wp->screen = s;
1.34 nicm 912: wp->flags |= PANE_REDRAW;
1.1 nicm 913: return (0);
914: }
915:
916: void
917: window_pane_reset_mode(struct window_pane *wp)
918: {
919: if (wp->mode == NULL)
920: return;
921:
922: wp->mode->free(wp);
923: wp->mode = NULL;
924:
925: wp->screen = &wp->base;
1.34 nicm 926: wp->flags |= PANE_REDRAW;
1.1 nicm 927: }
928:
929: void
1.51 nicm 930: window_pane_key(struct window_pane *wp, struct session *sess, int key)
1.1 nicm 931: {
1.27 nicm 932: struct window_pane *wp2;
933:
1.30 nicm 934: if (!window_pane_visible(wp))
1.3 nicm 935: return;
936:
1.1 nicm 937: if (wp->mode != NULL) {
938: if (wp->mode->key != NULL)
1.51 nicm 939: wp->mode->key(wp, sess, key);
1.27 nicm 940: return;
1.30 nicm 941: }
1.27 nicm 942:
1.30 nicm 943: if (wp->fd == -1)
944: return;
1.27 nicm 945: input_key(wp, key);
946: if (options_get_number(&wp->window->options, "synchronize-panes")) {
947: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
948: if (wp2 == wp || wp2->mode != NULL)
949: continue;
950: if (wp2->fd != -1 && window_pane_visible(wp2))
951: input_key(wp2, key);
952: }
953: }
1.1 nicm 954: }
955:
956: void
957: window_pane_mouse(
1.51 nicm 958: struct window_pane *wp, struct session *sess, struct mouse_event *m)
1.1 nicm 959: {
1.30 nicm 960: if (!window_pane_visible(wp))
1.3 nicm 961: return;
962:
1.31 nicm 963: if (m->x < wp->xoff || m->x >= wp->xoff + wp->sx)
1.1 nicm 964: return;
1.31 nicm 965: if (m->y < wp->yoff || m->y >= wp->yoff + wp->sy)
1.1 nicm 966: return;
1.31 nicm 967: m->x -= wp->xoff;
968: m->y -= wp->yoff;
1.1 nicm 969:
970: if (wp->mode != NULL) {
1.65 nicm 971: if (wp->mode->mouse != NULL &&
972: options_get_number(&wp->window->options, "mode-mouse"))
1.51 nicm 973: wp->mode->mouse(wp, sess, m);
1.30 nicm 974: } else if (wp->fd != -1)
1.31 nicm 975: input_mouse(wp, m);
1.10 nicm 976: }
977:
978: int
979: window_pane_visible(struct window_pane *wp)
980: {
981: struct window *w = wp->window;
982:
983: if (wp->xoff >= w->sx || wp->yoff >= w->sy)
984: return (0);
985: if (wp->xoff + wp->sx > w->sx || wp->yoff + wp->sy > w->sy)
986: return (0);
987: return (1);
1.1 nicm 988: }
989:
990: char *
1.5 nicm 991: window_pane_search(struct window_pane *wp, const char *searchstr, u_int *lineno)
1.1 nicm 992: {
1.4 nicm 993: struct screen *s = &wp->base;
1.5 nicm 994: char *newsearchstr, *line, *msg;
1.4 nicm 995: u_int i;
996:
1.5 nicm 997: msg = NULL;
998: xasprintf(&newsearchstr, "*%s*", searchstr);
999:
1.4 nicm 1000: for (i = 0; i < screen_size_y(s); i++) {
1001: line = grid_view_string_cells(s->grid, 0, i, screen_size_x(s));
1.5 nicm 1002: if (fnmatch(newsearchstr, line, 0) == 0) {
1003: msg = line;
1004: if (lineno != NULL)
1005: *lineno = i;
1006: break;
1007: }
1.4 nicm 1008: xfree(line);
1009: }
1.5 nicm 1010:
1011: xfree(newsearchstr);
1012: return (msg);
1.45 nicm 1013: }
1014:
1015: /* Find the pane directly above another. */
1016: struct window_pane *
1017: window_pane_find_up(struct window_pane *wp)
1018: {
1019: struct window_pane *wp2;
1020: u_int left, top;
1021:
1022: if (wp == NULL || !window_pane_visible(wp))
1023: return (NULL);
1024:
1025: top = wp->yoff;
1026: if (top == 0)
1027: top = wp->window->sy + 1;
1028: left = wp->xoff;
1029:
1030: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
1031: if (!window_pane_visible(wp2))
1032: continue;
1033: if (wp2->yoff + wp2->sy + 1 != top)
1034: continue;
1035: if (left >= wp2->xoff && left <= wp2->xoff + wp2->sx)
1036: return (wp2);
1037: }
1038: return (NULL);
1039: }
1040:
1041: /* Find the pane directly below another. */
1042: struct window_pane *
1043: window_pane_find_down(struct window_pane *wp)
1044: {
1045: struct window_pane *wp2;
1046: u_int left, bottom;
1047:
1048: if (wp == NULL || !window_pane_visible(wp))
1049: return (NULL);
1050:
1051: bottom = wp->yoff + wp->sy + 1;
1052: if (bottom >= wp->window->sy)
1053: bottom = 0;
1054: left = wp->xoff;
1055:
1056: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
1057: if (!window_pane_visible(wp2))
1058: continue;
1059: if (wp2->yoff != bottom)
1060: continue;
1061: if (left >= wp2->xoff && left <= wp2->xoff + wp2->sx)
1062: return (wp2);
1063: }
1064: return (NULL);
1065: }
1066:
1067: /*
1068: * Find the pane directly to the left of another, adjacent to the left side and
1069: * containing the top edge.
1070: */
1071: struct window_pane *
1072: window_pane_find_left(struct window_pane *wp)
1073: {
1074: struct window_pane *wp2;
1075: u_int left, top;
1076:
1077: if (wp == NULL || !window_pane_visible(wp))
1078: return (NULL);
1079:
1080: left = wp->xoff;
1081: if (left == 0)
1082: left = wp->window->sx + 1;
1083: top = wp->yoff;
1084:
1085: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
1086: if (!window_pane_visible(wp2))
1087: continue;
1088: if (wp2->xoff + wp2->sx + 1 != left)
1089: continue;
1090: if (top >= wp2->yoff && top <= wp2->yoff + wp2->sy)
1091: return (wp2);
1092: }
1093: return (NULL);
1094: }
1095:
1096: /*
1097: * Find the pane directly to the right of another, that is adjacent to the
1098: * right edge and including the top edge.
1099: */
1100: struct window_pane *
1101: window_pane_find_right(struct window_pane *wp)
1102: {
1103: struct window_pane *wp2;
1104: u_int right, top;
1105:
1106: if (wp == NULL || !window_pane_visible(wp))
1107: return (NULL);
1108:
1109: right = wp->xoff + wp->sx + 1;
1110: if (right >= wp->window->sx)
1111: right = 0;
1112: top = wp->yoff;
1113:
1114: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
1115: if (!window_pane_visible(wp2))
1116: continue;
1117: if (wp2->xoff != right)
1118: continue;
1119: if (top >= wp2->yoff && top <= wp2->yoff + wp2->sy)
1120: return (wp2);
1121: }
1122: return (NULL);
1.1 nicm 1123: }
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