Annotation of src/usr.bin/tmux/window.c, Revision 1.86
1.86 ! nicm 1: /* $OpenBSD: window.c,v 1.85 2012/10/25 11:14:46 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:
1.84 nicm 185: if (w != NULL)
186: window_remove_ref(w);
1.1 nicm 187: }
188:
189: struct winlink *
1.41 nicm 190: winlink_next(struct winlink *wl)
1.1 nicm 191: {
192: return (RB_NEXT(winlinks, wwl, wl));
193: }
194:
195: struct winlink *
1.41 nicm 196: winlink_previous(struct winlink *wl)
1.1 nicm 197: {
198: return (RB_PREV(winlinks, wwl, wl));
1.52 nicm 199: }
200:
201: struct winlink *
1.53 nicm 202: winlink_next_by_number(struct winlink *wl, struct session *s, int n)
1.52 nicm 203: {
204: for (; n > 0; n--) {
205: if ((wl = RB_NEXT(winlinks, wwl, wl)) == NULL)
1.53 nicm 206: wl = RB_MIN(winlinks, &s->windows);
1.52 nicm 207: }
208:
209: return (wl);
210: }
211:
212: struct winlink *
1.53 nicm 213: winlink_previous_by_number(struct winlink *wl, struct session *s, int n)
1.52 nicm 214: {
215: for (; n > 0; n--) {
216: if ((wl = RB_PREV(winlinks, wwl, wl)) == NULL)
1.53 nicm 217: wl = RB_MAX(winlinks, &s->windows);
1.52 nicm 218: }
219:
220: return (wl);
1.1 nicm 221: }
222:
223: void
224: winlink_stack_push(struct winlink_stack *stack, struct winlink *wl)
225: {
226: if (wl == NULL)
227: return;
228:
229: winlink_stack_remove(stack, wl);
1.28 nicm 230: TAILQ_INSERT_HEAD(stack, wl, sentry);
1.1 nicm 231: }
232:
233: void
234: winlink_stack_remove(struct winlink_stack *stack, struct winlink *wl)
235: {
236: struct winlink *wl2;
237:
238: if (wl == NULL)
239: return;
1.42 nicm 240:
1.28 nicm 241: TAILQ_FOREACH(wl2, stack, sentry) {
1.1 nicm 242: if (wl2 == wl) {
1.28 nicm 243: TAILQ_REMOVE(stack, wl, sentry);
1.1 nicm 244: return;
245: }
246: }
247: }
248:
249: int
250: window_index(struct window *s, u_int *i)
251: {
252: for (*i = 0; *i < ARRAY_LENGTH(&windows); (*i)++) {
253: if (s == ARRAY_ITEM(&windows, *i))
254: return (0);
255: }
256: return (-1);
257: }
258:
259: struct window *
1.71 nicm 260: window_find_by_id(u_int id)
261: {
262: struct window *w;
263: u_int i;
264:
265: for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
266: w = ARRAY_ITEM(&windows, i);
267: if (w->id == id)
268: return (w);
269: }
1.78 nicm 270: return (NULL);
1.71 nicm 271: }
272:
273: struct window *
1.1 nicm 274: window_create1(u_int sx, u_int sy)
275: {
276: struct window *w;
277: u_int i;
278:
1.38 nicm 279: w = xcalloc(1, sizeof *w);
1.71 nicm 280: w->id = next_window_id++;
1.1 nicm 281: w->name = NULL;
282: w->flags = 0;
283:
284: TAILQ_INIT(&w->panes);
285: w->active = NULL;
1.14 nicm 286:
1.17 nicm 287: w->lastlayout = -1;
1.14 nicm 288: w->layout_root = NULL;
1.77 nicm 289: TAILQ_INIT(&w->layout_list);
1.42 nicm 290:
1.1 nicm 291: w->sx = sx;
292: w->sy = sy;
293:
1.7 nicm 294: options_init(&w->options, &global_w_options);
1.79 nicm 295: if (options_get_number(&w->options, "automatic-rename"))
296: queue_window_name(w);
1.1 nicm 297:
298: for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
299: if (ARRAY_ITEM(&windows, i) == NULL) {
300: ARRAY_SET(&windows, i, w);
301: break;
302: }
303: }
304: if (i == ARRAY_LENGTH(&windows))
305: ARRAY_ADD(&windows, w);
306: w->references = 0;
307:
308: return (w);
309: }
310:
311: struct window *
1.23 nicm 312: window_create(const char *name, const char *cmd, const char *shell,
313: const char *cwd, struct environ *env, struct termios *tio,
314: u_int sx, u_int sy, u_int hlimit,char **cause)
1.1 nicm 315: {
1.14 nicm 316: struct window *w;
317: struct window_pane *wp;
1.1 nicm 318:
319: w = window_create1(sx, sy);
1.16 nicm 320: wp = window_add_pane(w, hlimit);
1.14 nicm 321: layout_init(w);
1.23 nicm 322: if (window_pane_spawn(wp, cmd, shell, cwd, env, tio, cause) != 0) {
1.1 nicm 323: window_destroy(w);
324: return (NULL);
325: }
326: w->active = TAILQ_FIRST(&w->panes);
327: if (name != NULL) {
328: w->name = xstrdup(name);
329: options_set_number(&w->options, "automatic-rename", 0);
330: } else
331: w->name = default_window_name(w);
332: return (w);
333: }
334:
335: void
336: window_destroy(struct window *w)
337: {
338: u_int i;
339:
340: if (window_index(w, &i) != 0)
341: fatalx("index not found");
342: ARRAY_SET(&windows, i, NULL);
343: while (!ARRAY_EMPTY(&windows) && ARRAY_LAST(&windows) == NULL)
344: ARRAY_TRUNC(&windows, 1);
345:
1.14 nicm 346: if (w->layout_root != NULL)
347: layout_free(w);
348:
1.73 nicm 349: if (event_initialized(&w->name_timer))
350: evtimer_del(&w->name_timer);
1.38 nicm 351:
1.1 nicm 352: options_free(&w->options);
353:
354: window_destroy_panes(w);
355:
1.82 nicm 356: free(w->name);
357: free(w);
1.84 nicm 358: }
359:
360: void
361: window_remove_ref(struct window *w)
362: {
363: if (w->references == 0)
364: fatal("bad reference count");
365: w->references--;
366: if (w->references == 0)
367: window_destroy(w);
1.72 nicm 368: }
369:
370: void
371: window_set_name(struct window *w, const char *new_name)
372: {
1.82 nicm 373: free(w->name);
1.72 nicm 374: w->name = xstrdup(new_name);
1.74 nicm 375: notify_window_renamed(w);
1.1 nicm 376: }
377:
1.15 nicm 378: void
1.1 nicm 379: window_resize(struct window *w, u_int sx, u_int sy)
380: {
381: w->sx = sx;
382: w->sy = sy;
383: }
384:
385: void
386: window_set_active_pane(struct window *w, struct window_pane *wp)
387: {
1.59 nicm 388: if (wp == w->active)
389: return;
1.58 nicm 390: w->last = w->active;
1.1 nicm 391: w->active = wp;
1.10 nicm 392: while (!window_pane_visible(w->active)) {
1.1 nicm 393: w->active = TAILQ_PREV(w->active, window_panes, entry);
1.10 nicm 394: if (w->active == NULL)
395: w->active = TAILQ_LAST(&w->panes, window_panes);
396: if (w->active == wp)
397: return;
1.29 nicm 398: }
399: }
400:
1.66 nicm 401: struct window_pane *
402: window_get_active_at(struct window *w, u_int x, u_int y)
1.29 nicm 403: {
404: struct window_pane *wp;
405:
406: TAILQ_FOREACH(wp, &w->panes, entry) {
1.66 nicm 407: if (!window_pane_visible(wp))
1.29 nicm 408: continue;
1.66 nicm 409: if (x < wp->xoff || x > wp->xoff + wp->sx)
1.29 nicm 410: continue;
1.66 nicm 411: if (y < wp->yoff || y > wp->yoff + wp->sy)
1.29 nicm 412: continue;
1.66 nicm 413: return (wp);
414: }
415: return (NULL);
416: }
417:
418: void
419: window_set_active_at(struct window *w, u_int x, u_int y)
420: {
421: struct window_pane *wp;
422:
423: wp = window_get_active_at(w, x, y);
424: if (wp != NULL && wp != w->active)
1.29 nicm 425: window_set_active_pane(w, wp);
1.66 nicm 426: }
427:
428: struct window_pane *
429: window_find_string(struct window *w, const char *s)
430: {
431: u_int x, y;
432:
433: x = w->sx / 2;
434: y = w->sy / 2;
435:
436: if (strcasecmp(s, "top") == 0)
437: y = 0;
438: else if (strcasecmp(s, "bottom") == 0)
439: y = w->sy - 1;
440: else if (strcasecmp(s, "left") == 0)
441: x = 0;
442: else if (strcasecmp(s, "right") == 0)
443: x = w->sx - 1;
444: else if (strcasecmp(s, "top-left") == 0) {
445: x = 0;
446: y = 0;
447: } else if (strcasecmp(s, "top-right") == 0) {
448: x = w->sx - 1;
449: y = 0;
450: } else if (strcasecmp(s, "bottom-left") == 0) {
451: x = 0;
452: y = w->sy - 1;
453: } else if (strcasecmp(s, "bottom-right") == 0) {
454: x = w->sx - 1;
455: y = w->sy - 1;
456: } else
457: return (NULL);
458:
459: return (window_get_active_at(w, x, y));
1.1 nicm 460: }
461:
462: struct window_pane *
1.16 nicm 463: window_add_pane(struct window *w, u_int hlimit)
1.1 nicm 464: {
465: struct window_pane *wp;
466:
1.14 nicm 467: wp = window_pane_create(w, w->sx, w->sy, hlimit);
1.1 nicm 468: if (TAILQ_EMPTY(&w->panes))
469: TAILQ_INSERT_HEAD(&w->panes, wp, entry);
470: else
471: TAILQ_INSERT_AFTER(&w->panes, w->active, wp, entry);
472: return (wp);
473: }
474:
475: void
476: window_remove_pane(struct window *w, struct window_pane *wp)
477: {
1.57 nicm 478: if (wp == w->active) {
1.58 nicm 479: w->active = w->last;
480: w->last = NULL;
481: if (w->active == NULL) {
482: w->active = TAILQ_PREV(wp, window_panes, entry);
483: if (w->active == NULL)
484: w->active = TAILQ_NEXT(wp, entry);
485: }
486: } else if (wp == w->last)
487: w->last = NULL;
1.1 nicm 488:
489: TAILQ_REMOVE(&w->panes, wp, entry);
490: window_pane_destroy(wp);
491: }
492:
493: struct window_pane *
494: window_pane_at_index(struct window *w, u_int idx)
495: {
496: struct window_pane *wp;
497: u_int n;
498:
1.67 nicm 499: n = options_get_number(&w->options, "pane-base-index");
1.1 nicm 500: TAILQ_FOREACH(wp, &w->panes, entry) {
501: if (n == idx)
502: return (wp);
503: n++;
504: }
505: return (NULL);
1.53 nicm 506: }
507:
508: struct window_pane *
509: window_pane_next_by_number(struct window *w, struct window_pane *wp, u_int n)
510: {
511: for (; n > 0; n--) {
512: if ((wp = TAILQ_NEXT(wp, entry)) == NULL)
513: wp = TAILQ_FIRST(&w->panes);
514: }
515:
516: return (wp);
517: }
518:
519: struct window_pane *
520: window_pane_previous_by_number(struct window *w, struct window_pane *wp,
521: u_int n)
522: {
523: for (; n > 0; n--) {
524: if ((wp = TAILQ_PREV(wp, window_panes, entry)) == NULL)
525: wp = TAILQ_LAST(&w->panes, window_panes);
526: }
527:
528: return (wp);
1.13 nicm 529: }
530:
1.69 nicm 531: int
532: window_pane_index(struct window_pane *wp, u_int *i)
1.13 nicm 533: {
534: struct window_pane *wq;
1.69 nicm 535: struct window *w = wp->window;
1.13 nicm 536:
1.69 nicm 537: *i = options_get_number(&w->options, "pane-base-index");
1.13 nicm 538: TAILQ_FOREACH(wq, &w->panes, entry) {
1.69 nicm 539: if (wp == wq) {
540: return (0);
541: }
542: (*i)++;
1.13 nicm 543: }
1.69 nicm 544:
545: return (-1);
1.1 nicm 546: }
547:
548: u_int
549: window_count_panes(struct window *w)
550: {
551: struct window_pane *wp;
552: u_int n;
553:
554: n = 0;
555: TAILQ_FOREACH(wp, &w->panes, entry)
556: n++;
557: return (n);
558: }
559:
560: void
561: window_destroy_panes(struct window *w)
562: {
563: struct window_pane *wp;
564:
565: while (!TAILQ_EMPTY(&w->panes)) {
566: wp = TAILQ_FIRST(&w->panes);
567: TAILQ_REMOVE(&w->panes, wp, entry);
568: window_pane_destroy(wp);
569: }
1.61 nicm 570: }
571:
572: /* Return list of printable window flag symbols. No flags is just a space. */
573: char *
574: window_printable_flags(struct session *s, struct winlink *wl)
575: {
576: char flags[BUFSIZ];
577: int pos;
578:
579: pos = 0;
580: if (wl->flags & WINLINK_ACTIVITY)
581: flags[pos++] = '#';
582: if (wl->flags & WINLINK_BELL)
583: flags[pos++] = '!';
584: if (wl->flags & WINLINK_CONTENT)
585: flags[pos++] = '+';
586: if (wl->flags & WINLINK_SILENCE)
587: flags[pos++] = '~';
588: if (wl == s->curw)
589: flags[pos++] = '*';
590: if (wl == TAILQ_FIRST(&s->lastw))
591: flags[pos++] = '-';
592: if (pos == 0)
593: flags[pos++] = ' ';
594: flags[pos] = '\0';
595: return (xstrdup(flags));
1.1 nicm 596: }
597:
1.64 nicm 598: /* Find pane in global tree by id. */
599: struct window_pane *
600: window_pane_find_by_id(u_int id)
601: {
602: struct window_pane wp;
603:
604: wp.id = id;
605: return (RB_FIND(window_pane_tree, &all_window_panes, &wp));
606: }
607:
1.1 nicm 608: struct window_pane *
609: window_pane_create(struct window *w, u_int sx, u_int sy, u_int hlimit)
610: {
611: struct window_pane *wp;
612:
613: wp = xcalloc(1, sizeof *wp);
614: wp->window = w;
615:
1.71 nicm 616: wp->id = next_window_pane_id++;
1.64 nicm 617: RB_INSERT(window_pane_tree, &all_window_panes, wp);
618:
1.1 nicm 619: wp->cmd = NULL;
1.23 nicm 620: wp->shell = NULL;
1.1 nicm 621: wp->cwd = NULL;
622:
623: wp->fd = -1;
1.37 nicm 624: wp->event = NULL;
1.1 nicm 625:
626: wp->mode = NULL;
1.14 nicm 627:
628: wp->layout_cell = NULL;
1.1 nicm 629:
630: wp->xoff = 0;
1.42 nicm 631: wp->yoff = 0;
1.1 nicm 632:
633: wp->sx = sx;
634: wp->sy = sy;
635:
1.32 nicm 636: wp->pipe_fd = -1;
637: wp->pipe_off = 0;
1.36 nicm 638: wp->pipe_event = NULL;
1.32 nicm 639:
1.9 nicm 640: wp->saved_grid = NULL;
641:
1.1 nicm 642: screen_init(&wp->base, sx, sy, hlimit);
643: wp->screen = &wp->base;
644:
645: input_init(wp);
646:
647: return (wp);
648: }
649:
650: void
651: window_pane_destroy(struct window_pane *wp)
652: {
1.55 nicm 653: window_pane_reset_mode(wp);
654:
1.76 nicm 655: if (event_initialized(&wp->changes_timer))
656: evtimer_del(&wp->changes_timer);
1.75 nicm 657:
1.37 nicm 658: if (wp->fd != -1) {
1.70 nicm 659: bufferevent_free(wp->event);
1.1 nicm 660: close(wp->fd);
1.37 nicm 661: }
1.1 nicm 662:
663: input_free(wp);
664:
665: screen_free(&wp->base);
1.9 nicm 666: if (wp->saved_grid != NULL)
667: grid_destroy(wp->saved_grid);
1.1 nicm 668:
1.32 nicm 669: if (wp->pipe_fd != -1) {
1.70 nicm 670: bufferevent_free(wp->pipe_event);
1.32 nicm 671: close(wp->pipe_fd);
672: }
673:
1.64 nicm 674: RB_REMOVE(window_pane_tree, &all_window_panes, wp);
675:
1.82 nicm 676: free(wp->cwd);
677: free(wp->shell);
678: free(wp->cmd);
679: free(wp);
1.1 nicm 680: }
681:
682: int
1.23 nicm 683: window_pane_spawn(struct window_pane *wp, const char *cmd, const char *shell,
1.21 nicm 684: const char *cwd, struct environ *env, struct termios *tio, char **cause)
1.1 nicm 685: {
1.47 nicm 686: struct winsize ws;
1.64 nicm 687: char *argv0, paneid[16];
1.47 nicm 688: const char *ptr;
689: struct termios tio2;
1.1 nicm 690:
1.37 nicm 691: if (wp->fd != -1) {
1.70 nicm 692: bufferevent_free(wp->event);
1.1 nicm 693: close(wp->fd);
1.37 nicm 694: }
1.1 nicm 695: if (cmd != NULL) {
1.82 nicm 696: free(wp->cmd);
1.1 nicm 697: wp->cmd = xstrdup(cmd);
698: }
1.23 nicm 699: if (shell != NULL) {
1.82 nicm 700: free(wp->shell);
1.23 nicm 701: wp->shell = xstrdup(shell);
702: }
1.1 nicm 703: if (cwd != NULL) {
1.82 nicm 704: free(wp->cwd);
1.1 nicm 705: wp->cwd = xstrdup(cwd);
706: }
707:
708: memset(&ws, 0, sizeof ws);
709: ws.ws_col = screen_size_x(&wp->base);
710: ws.ws_row = screen_size_y(&wp->base);
711:
1.42 nicm 712: switch (wp->pid = forkpty(&wp->fd, wp->tty, NULL, &ws)) {
1.1 nicm 713: case -1:
714: wp->fd = -1;
715: xasprintf(cause, "%s: %s", cmd, strerror(errno));
716: return (-1);
717: case 0:
718: if (chdir(wp->cwd) != 0)
719: chdir("/");
1.25 nicm 720:
721: if (tcgetattr(STDIN_FILENO, &tio2) != 0)
722: fatal("tcgetattr failed");
723: if (tio != NULL)
724: memcpy(tio2.c_cc, tio->c_cc, sizeof tio2.c_cc);
725: tio2.c_cc[VERASE] = '\177';
726: if (tcsetattr(STDIN_FILENO, TCSANOW, &tio2) != 0)
727: fatal("tcgetattr failed");
1.18 nicm 728:
1.56 nicm 729: closefrom(STDERR_FILENO + 1);
730:
1.64 nicm 731: xsnprintf(paneid, sizeof paneid, "%%%u", wp->id);
732: environ_set(env, "TMUX_PANE", paneid);
1.47 nicm 733: environ_push(env);
1.18 nicm 734:
1.54 nicm 735: clear_signals(1);
1.1 nicm 736: log_close();
737:
1.80 nicm 738: setenv("SHELL", wp->shell, 1);
739: ptr = strrchr(wp->shell, '/');
740:
1.8 nicm 741: if (*wp->cmd != '\0') {
1.80 nicm 742: /* Use the command. */
743: if (ptr != NULL && *(ptr + 1) != '\0')
744: xasprintf(&argv0, "%s", ptr + 1);
745: else
746: xasprintf(&argv0, "%s", wp->shell);
747: execl(wp->shell, argv0, "-c", wp->cmd, (char *) NULL);
1.8 nicm 748: fatal("execl failed");
749: }
750:
751: /* No command; fork a login shell. */
1.23 nicm 752: if (ptr != NULL && *(ptr + 1) != '\0')
1.8 nicm 753: xasprintf(&argv0, "-%s", ptr + 1);
754: else
1.23 nicm 755: xasprintf(&argv0, "-%s", wp->shell);
756: execl(wp->shell, argv0, (char *) NULL);
1.1 nicm 757: fatal("execl failed");
758: }
759:
1.62 nicm 760: setblocking(wp->fd, 0);
761:
1.37 nicm 762: wp->event = bufferevent_new(wp->fd,
763: window_pane_read_callback, NULL, window_pane_error_callback, wp);
764: bufferevent_enable(wp->event, EV_READ|EV_WRITE);
1.1 nicm 765:
766: return (0);
1.75 nicm 767: }
768:
769: void
770: window_pane_timer_start(struct window_pane *wp)
771: {
772: struct timeval tv;
773:
774: tv.tv_sec = 0;
775: tv.tv_usec = 1000;
776:
777: evtimer_del(&wp->changes_timer);
778: evtimer_set(&wp->changes_timer, window_pane_timer_callback, wp);
779: evtimer_add(&wp->changes_timer, &tv);
780: }
781:
782: void
783: window_pane_timer_callback(unused int fd, unused short events, void *data)
784: {
785: struct window_pane *wp = data;
786: struct window *w = wp->window;
787: u_int interval, trigger;
788:
789: interval = options_get_number(&w->options, "c0-change-interval");
790: trigger = options_get_number(&w->options, "c0-change-trigger");
791:
792: if (wp->changes_redraw++ == interval) {
793: wp->flags |= PANE_REDRAW;
794: wp->changes_redraw = 0;
795:
796: }
797:
798: if (trigger == 0 || wp->changes < trigger) {
799: wp->flags |= PANE_REDRAW;
800: wp->flags &= ~PANE_DROP;
801: } else
802: window_pane_timer_start(wp);
803: wp->changes = 0;
1.1 nicm 804: }
805:
1.41 nicm 806: /* ARGSUSED */
1.15 nicm 807: void
1.37 nicm 808: window_pane_read_callback(unused struct bufferevent *bufev, void *data)
809: {
1.46 nicm 810: struct window_pane *wp = data;
811: char *new_data;
812: size_t new_size;
813:
814: new_size = EVBUFFER_LENGTH(wp->event->input) - wp->pipe_off;
815: if (wp->pipe_fd != -1 && new_size > 0) {
816: new_data = EVBUFFER_DATA(wp->event->input);
817: bufferevent_write(wp->pipe_event, new_data, new_size);
818: }
819:
820: input_parse(wp);
1.37 nicm 821:
1.46 nicm 822: wp->pipe_off = EVBUFFER_LENGTH(wp->event->input);
1.60 nicm 823:
824: /*
825: * If we get here, we're not outputting anymore, so set the silence
826: * flag on the window.
827: */
828: wp->window->flags |= WINDOW_SILENCE;
829: if (gettimeofday(&wp->window->silence_timer, NULL) != 0)
830: fatal("gettimeofday failed.");
1.37 nicm 831: }
832:
1.41 nicm 833: /* ARGSUSED */
1.37 nicm 834: void
835: window_pane_error_callback(
836: unused struct bufferevent *bufev, unused short what, void *data)
837: {
838: struct window_pane *wp = data;
839:
1.39 nicm 840: server_destroy_pane(wp);
1.37 nicm 841: }
842:
843: void
1.1 nicm 844: window_pane_resize(struct window_pane *wp, u_int sx, u_int sy)
845: {
846: struct winsize ws;
847:
848: if (sx == wp->sx && sy == wp->sy)
1.15 nicm 849: return;
1.1 nicm 850: wp->sx = sx;
851: wp->sy = sy;
852:
853: memset(&ws, 0, sizeof ws);
854: ws.ws_col = sx;
855: ws.ws_row = sy;
856:
857: screen_resize(&wp->base, sx, sy);
858: if (wp->mode != NULL)
859: wp->mode->resize(wp, sx, sy);
860:
861: if (wp->fd != -1 && ioctl(wp->fd, TIOCSWINSZ, &ws) == -1)
862: fatal("ioctl failed");
1.44 nicm 863: }
864:
865: /*
866: * Enter alternative screen mode. A copy of the visible screen is saved and the
867: * history is not updated
868: */
869: void
870: window_pane_alternate_on(struct window_pane *wp, struct grid_cell *gc)
871: {
872: struct screen *s = &wp->base;
873: u_int sx, sy;
874:
875: if (wp->saved_grid != NULL)
876: return;
877: if (!options_get_number(&wp->window->options, "alternate-screen"))
878: return;
879: sx = screen_size_x(s);
880: sy = screen_size_y(s);
881:
882: wp->saved_grid = grid_create(sx, sy, 0);
883: grid_duplicate_lines(wp->saved_grid, 0, s->grid, screen_hsize(s), sy);
884: wp->saved_cx = s->cx;
885: wp->saved_cy = s->cy;
886: memcpy(&wp->saved_cell, gc, sizeof wp->saved_cell);
887:
888: grid_view_clear(s->grid, 0, 0, sx, sy);
889:
890: wp->base.grid->flags &= ~GRID_HISTORY;
891:
892: wp->flags |= PANE_REDRAW;
893: }
894:
895: /* Exit alternate screen mode and restore the copied grid. */
896: void
897: window_pane_alternate_off(struct window_pane *wp, struct grid_cell *gc)
898: {
899: struct screen *s = &wp->base;
900: u_int sx, sy;
901:
902: if (wp->saved_grid == NULL)
903: return;
904: if (!options_get_number(&wp->window->options, "alternate-screen"))
905: return;
906: sx = screen_size_x(s);
907: sy = screen_size_y(s);
908:
909: /*
910: * If the current size is bigger, temporarily resize to the old size
911: * before copying back.
912: */
913: if (sy > wp->saved_grid->sy)
914: screen_resize(s, sx, wp->saved_grid->sy);
915:
916: /* Restore the grid, cursor position and cell. */
917: grid_duplicate_lines(s->grid, screen_hsize(s), wp->saved_grid, 0, sy);
918: s->cx = wp->saved_cx;
919: if (s->cx > screen_size_x(s) - 1)
920: s->cx = screen_size_x(s) - 1;
921: s->cy = wp->saved_cy;
922: if (s->cy > screen_size_y(s) - 1)
923: s->cy = screen_size_y(s) - 1;
924: memcpy(gc, &wp->saved_cell, sizeof *gc);
925:
926: /*
927: * Turn history back on (so resize can use it) and then resize back to
928: * the current size.
929: */
930: wp->base.grid->flags |= GRID_HISTORY;
931: if (sy > wp->saved_grid->sy)
932: screen_resize(s, sx, sy);
933:
934: grid_destroy(wp->saved_grid);
935: wp->saved_grid = NULL;
936:
937: wp->flags |= PANE_REDRAW;
1.1 nicm 938: }
939:
940: int
941: window_pane_set_mode(struct window_pane *wp, const struct window_mode *mode)
942: {
943: struct screen *s;
944:
1.15 nicm 945: if (wp->mode != NULL)
1.1 nicm 946: return (1);
947: wp->mode = mode;
948:
949: if ((s = wp->mode->init(wp)) != NULL)
950: wp->screen = s;
1.34 nicm 951: wp->flags |= PANE_REDRAW;
1.1 nicm 952: return (0);
953: }
954:
955: void
956: window_pane_reset_mode(struct window_pane *wp)
957: {
958: if (wp->mode == NULL)
959: return;
960:
961: wp->mode->free(wp);
962: wp->mode = NULL;
963:
964: wp->screen = &wp->base;
1.34 nicm 965: wp->flags |= PANE_REDRAW;
1.1 nicm 966: }
967:
968: void
1.51 nicm 969: window_pane_key(struct window_pane *wp, struct session *sess, int key)
1.1 nicm 970: {
1.27 nicm 971: struct window_pane *wp2;
972:
1.30 nicm 973: if (!window_pane_visible(wp))
1.3 nicm 974: return;
975:
1.1 nicm 976: if (wp->mode != NULL) {
977: if (wp->mode->key != NULL)
1.51 nicm 978: wp->mode->key(wp, sess, key);
1.27 nicm 979: return;
1.30 nicm 980: }
1.27 nicm 981:
1.30 nicm 982: if (wp->fd == -1)
983: return;
1.27 nicm 984: input_key(wp, key);
985: if (options_get_number(&wp->window->options, "synchronize-panes")) {
986: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
987: if (wp2 == wp || wp2->mode != NULL)
988: continue;
989: if (wp2->fd != -1 && window_pane_visible(wp2))
990: input_key(wp2, key);
991: }
992: }
1.1 nicm 993: }
994:
995: void
996: window_pane_mouse(
1.51 nicm 997: struct window_pane *wp, struct session *sess, struct mouse_event *m)
1.1 nicm 998: {
1.30 nicm 999: if (!window_pane_visible(wp))
1.3 nicm 1000: return;
1001:
1.31 nicm 1002: if (m->x < wp->xoff || m->x >= wp->xoff + wp->sx)
1.1 nicm 1003: return;
1.31 nicm 1004: if (m->y < wp->yoff || m->y >= wp->yoff + wp->sy)
1.1 nicm 1005: return;
1.31 nicm 1006: m->x -= wp->xoff;
1007: m->y -= wp->yoff;
1.1 nicm 1008:
1009: if (wp->mode != NULL) {
1.65 nicm 1010: if (wp->mode->mouse != NULL &&
1011: options_get_number(&wp->window->options, "mode-mouse"))
1.51 nicm 1012: wp->mode->mouse(wp, sess, m);
1.30 nicm 1013: } else if (wp->fd != -1)
1.86 ! nicm 1014: input_mouse(wp, sess, m);
1.10 nicm 1015: }
1016:
1017: int
1018: window_pane_visible(struct window_pane *wp)
1019: {
1020: struct window *w = wp->window;
1021:
1022: if (wp->xoff >= w->sx || wp->yoff >= w->sy)
1023: return (0);
1024: if (wp->xoff + wp->sx > w->sx || wp->yoff + wp->sy > w->sy)
1025: return (0);
1026: return (1);
1.1 nicm 1027: }
1028:
1029: char *
1.5 nicm 1030: window_pane_search(struct window_pane *wp, const char *searchstr, u_int *lineno)
1.1 nicm 1031: {
1.4 nicm 1032: struct screen *s = &wp->base;
1.5 nicm 1033: char *newsearchstr, *line, *msg;
1.4 nicm 1034: u_int i;
1035:
1.5 nicm 1036: msg = NULL;
1037: xasprintf(&newsearchstr, "*%s*", searchstr);
1038:
1.4 nicm 1039: for (i = 0; i < screen_size_y(s); i++) {
1040: line = grid_view_string_cells(s->grid, 0, i, screen_size_x(s));
1.5 nicm 1041: if (fnmatch(newsearchstr, line, 0) == 0) {
1042: msg = line;
1043: if (lineno != NULL)
1044: *lineno = i;
1045: break;
1046: }
1.82 nicm 1047: free(line);
1.4 nicm 1048: }
1.5 nicm 1049:
1.82 nicm 1050: free(newsearchstr);
1.5 nicm 1051: return (msg);
1.45 nicm 1052: }
1053:
1054: /* Find the pane directly above another. */
1055: struct window_pane *
1056: window_pane_find_up(struct window_pane *wp)
1057: {
1058: struct window_pane *wp2;
1059: u_int left, top;
1060:
1061: if (wp == NULL || !window_pane_visible(wp))
1062: return (NULL);
1063:
1064: top = wp->yoff;
1065: if (top == 0)
1066: top = wp->window->sy + 1;
1067: left = wp->xoff;
1068:
1069: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
1070: if (!window_pane_visible(wp2))
1071: continue;
1072: if (wp2->yoff + wp2->sy + 1 != top)
1073: continue;
1074: if (left >= wp2->xoff && left <= wp2->xoff + wp2->sx)
1075: return (wp2);
1076: }
1077: return (NULL);
1078: }
1079:
1080: /* Find the pane directly below another. */
1081: struct window_pane *
1082: window_pane_find_down(struct window_pane *wp)
1083: {
1084: struct window_pane *wp2;
1085: u_int left, bottom;
1086:
1087: if (wp == NULL || !window_pane_visible(wp))
1088: return (NULL);
1089:
1090: bottom = wp->yoff + wp->sy + 1;
1091: if (bottom >= wp->window->sy)
1092: bottom = 0;
1093: left = wp->xoff;
1094:
1095: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
1096: if (!window_pane_visible(wp2))
1097: continue;
1098: if (wp2->yoff != bottom)
1099: continue;
1100: if (left >= wp2->xoff && left <= wp2->xoff + wp2->sx)
1101: return (wp2);
1102: }
1103: return (NULL);
1104: }
1105:
1106: /*
1107: * Find the pane directly to the left of another, adjacent to the left side and
1108: * containing the top edge.
1109: */
1110: struct window_pane *
1111: window_pane_find_left(struct window_pane *wp)
1112: {
1113: struct window_pane *wp2;
1114: u_int left, top;
1115:
1116: if (wp == NULL || !window_pane_visible(wp))
1117: return (NULL);
1118:
1119: left = wp->xoff;
1120: if (left == 0)
1121: left = wp->window->sx + 1;
1122: top = wp->yoff;
1123:
1124: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
1125: if (!window_pane_visible(wp2))
1126: continue;
1127: if (wp2->xoff + wp2->sx + 1 != left)
1128: continue;
1129: if (top >= wp2->yoff && top <= wp2->yoff + wp2->sy)
1130: return (wp2);
1131: }
1132: return (NULL);
1133: }
1134:
1135: /*
1136: * Find the pane directly to the right of another, that is adjacent to the
1137: * right edge and including the top edge.
1138: */
1139: struct window_pane *
1140: window_pane_find_right(struct window_pane *wp)
1141: {
1142: struct window_pane *wp2;
1143: u_int right, top;
1144:
1145: if (wp == NULL || !window_pane_visible(wp))
1146: return (NULL);
1147:
1148: right = wp->xoff + wp->sx + 1;
1149: if (right >= wp->window->sx)
1150: right = 0;
1151: top = wp->yoff;
1152:
1153: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
1154: if (!window_pane_visible(wp2))
1155: continue;
1156: if (wp2->xoff != right)
1157: continue;
1158: if (top >= wp2->yoff && top <= wp2->yoff + wp2->sy)
1159: return (wp2);
1160: }
1161: return (NULL);
1.81 nicm 1162: }
1163:
1164: /* Clear alert flags for a winlink */
1165: void
1166: winlink_clear_flags(struct winlink *wl)
1167: {
1168: struct winlink *wm;
1169: struct session *s;
1170: struct window *w;
1171: u_int i;
1172:
1173: for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
1174: if ((w = ARRAY_ITEM(&windows, i)) == NULL)
1175: continue;
1176:
1177: RB_FOREACH(s, sessions, &sessions) {
1178: if ((wm = session_has(s, w)) == NULL)
1179: continue;
1180:
1181: if (wm->window != wl->window)
1182: continue;
1183: if ((wm->flags & WINLINK_ALERTFLAGS) == 0)
1184: continue;
1185:
1186: wm->flags &= ~WINLINK_ALERTFLAGS;
1187: server_status_session(s);
1188: }
1189: }
1.83 nicm 1190: }
1191:
1192: /* Set the grid_cell with fg/bg/attr information when window is in a mode. */
1193: void
1194: window_mode_attrs(struct grid_cell *gc, struct options *oo)
1195: {
1.85 nicm 1196: memcpy(gc, &grid_default_cell, sizeof *gc);
1.83 nicm 1197: colour_set_fg(gc, options_get_number(oo, "mode-fg"));
1198: colour_set_bg(gc, options_get_number(oo, "mode-bg"));
1199: gc->attr |= options_get_number(oo, "mode-attr");
1.1 nicm 1200: }
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