Annotation of src/usr.bin/tmux/window.c, Revision 1.69
1.69 ! nicm 1: /* $OpenBSD: window.c,v 1.68 2011/09/25 18:53:04 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;
61: u_int next_window_pane;
62:
1.37 nicm 63: void window_pane_read_callback(struct bufferevent *, void *);
64: void window_pane_error_callback(struct bufferevent *, short, void *);
65:
1.1 nicm 66: RB_GENERATE(winlinks, winlink, entry, winlink_cmp);
67:
68: int
69: winlink_cmp(struct winlink *wl1, struct winlink *wl2)
70: {
71: return (wl1->idx - wl2->idx);
1.12 nicm 72: }
73:
1.64 nicm 74: RB_GENERATE(window_pane_tree, window_pane, tree_entry, window_pane_cmp);
75:
76: int
77: window_pane_cmp(struct window_pane *wp1, struct window_pane *wp2)
78: {
79: return (wp1->id - wp2->id);
80: }
81:
1.12 nicm 82: struct winlink *
83: winlink_find_by_window(struct winlinks *wwl, struct window *w)
84: {
85: struct winlink *wl;
86:
87: RB_FOREACH(wl, winlinks, wwl) {
88: if (wl->window == w)
89: return (wl);
90: }
91:
92: return (NULL);
1.1 nicm 93: }
94:
95: struct winlink *
96: winlink_find_by_index(struct winlinks *wwl, int idx)
97: {
98: struct winlink wl;
99:
100: if (idx < 0)
101: fatalx("bad index");
102:
103: wl.idx = idx;
104: return (RB_FIND(winlinks, wwl, &wl));
105: }
106:
107: int
1.22 nicm 108: winlink_next_index(struct winlinks *wwl, int idx)
1.1 nicm 109: {
1.22 nicm 110: int i;
1.1 nicm 111:
1.22 nicm 112: i = idx;
113: do {
1.1 nicm 114: if (winlink_find_by_index(wwl, i) == NULL)
115: return (i);
1.22 nicm 116: if (i == INT_MAX)
117: i = 0;
118: else
119: i++;
120: } while (i != idx);
121: return (-1);
1.1 nicm 122: }
123:
124: u_int
125: winlink_count(struct winlinks *wwl)
126: {
127: struct winlink *wl;
128: u_int n;
129:
130: n = 0;
131: RB_FOREACH(wl, winlinks, wwl)
132: n++;
133:
134: return (n);
135: }
136:
137: struct winlink *
1.63 nicm 138: winlink_add(struct winlinks *wwl, int idx)
1.1 nicm 139: {
140: struct winlink *wl;
141:
1.22 nicm 142: if (idx < 0) {
143: if ((idx = winlink_next_index(wwl, -idx - 1)) == -1)
144: return (NULL);
145: } else if (winlink_find_by_index(wwl, idx) != NULL)
1.1 nicm 146: return (NULL);
147:
148: wl = xcalloc(1, sizeof *wl);
149: wl->idx = idx;
150: RB_INSERT(winlinks, wwl, wl);
151:
1.63 nicm 152: return (wl);
153: }
154:
155: void
156: winlink_set_window(struct winlink *wl, struct window *w)
157: {
158: wl->window = w;
1.1 nicm 159: w->references++;
160: }
161:
162: void
163: winlink_remove(struct winlinks *wwl, struct winlink *wl)
164: {
165: struct window *w = wl->window;
166:
167: RB_REMOVE(winlinks, wwl, wl);
1.40 nicm 168: if (wl->status_text != NULL)
169: xfree(wl->status_text);
1.1 nicm 170: xfree(wl);
171:
1.63 nicm 172: if (w != NULL) {
173: if (w->references == 0)
174: fatal("bad reference count");
175: w->references--;
176: if (w->references == 0)
177: window_destroy(w);
178: }
1.1 nicm 179: }
180:
181: struct winlink *
1.41 nicm 182: winlink_next(struct winlink *wl)
1.1 nicm 183: {
184: return (RB_NEXT(winlinks, wwl, wl));
185: }
186:
187: struct winlink *
1.41 nicm 188: winlink_previous(struct winlink *wl)
1.1 nicm 189: {
190: return (RB_PREV(winlinks, wwl, wl));
1.52 nicm 191: }
192:
193: struct winlink *
1.53 nicm 194: winlink_next_by_number(struct winlink *wl, struct session *s, int n)
1.52 nicm 195: {
196: for (; n > 0; n--) {
197: if ((wl = RB_NEXT(winlinks, wwl, wl)) == NULL)
1.53 nicm 198: wl = RB_MIN(winlinks, &s->windows);
1.52 nicm 199: }
200:
201: return (wl);
202: }
203:
204: struct winlink *
1.53 nicm 205: winlink_previous_by_number(struct winlink *wl, struct session *s, int n)
1.52 nicm 206: {
207: for (; n > 0; n--) {
208: if ((wl = RB_PREV(winlinks, wwl, wl)) == NULL)
1.53 nicm 209: wl = RB_MAX(winlinks, &s->windows);
1.52 nicm 210: }
211:
212: return (wl);
1.1 nicm 213: }
214:
215: void
216: winlink_stack_push(struct winlink_stack *stack, struct winlink *wl)
217: {
218: if (wl == NULL)
219: return;
220:
221: winlink_stack_remove(stack, wl);
1.28 nicm 222: TAILQ_INSERT_HEAD(stack, wl, sentry);
1.1 nicm 223: }
224:
225: void
226: winlink_stack_remove(struct winlink_stack *stack, struct winlink *wl)
227: {
228: struct winlink *wl2;
229:
230: if (wl == NULL)
231: return;
1.42 nicm 232:
1.28 nicm 233: TAILQ_FOREACH(wl2, stack, sentry) {
1.1 nicm 234: if (wl2 == wl) {
1.28 nicm 235: TAILQ_REMOVE(stack, wl, sentry);
1.1 nicm 236: return;
237: }
238: }
239: }
240:
241: int
242: window_index(struct window *s, u_int *i)
243: {
244: for (*i = 0; *i < ARRAY_LENGTH(&windows); (*i)++) {
245: if (s == ARRAY_ITEM(&windows, *i))
246: return (0);
247: }
248: return (-1);
249: }
250:
251: struct window *
252: window_create1(u_int sx, u_int sy)
253: {
254: struct window *w;
255: u_int i;
256:
1.38 nicm 257: w = xcalloc(1, sizeof *w);
1.1 nicm 258: w->name = NULL;
259: w->flags = 0;
260:
261: TAILQ_INIT(&w->panes);
262: w->active = NULL;
1.14 nicm 263:
1.17 nicm 264: w->lastlayout = -1;
1.14 nicm 265: w->layout_root = NULL;
1.42 nicm 266:
1.1 nicm 267: w->sx = sx;
268: w->sy = sy;
269:
1.38 nicm 270: queue_window_name(w);
271:
1.7 nicm 272: options_init(&w->options, &global_w_options);
1.1 nicm 273:
274: for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
275: if (ARRAY_ITEM(&windows, i) == NULL) {
276: ARRAY_SET(&windows, i, w);
277: break;
278: }
279: }
280: if (i == ARRAY_LENGTH(&windows))
281: ARRAY_ADD(&windows, w);
282: w->references = 0;
283:
284: return (w);
285: }
286:
287: struct window *
1.23 nicm 288: window_create(const char *name, const char *cmd, const char *shell,
289: const char *cwd, struct environ *env, struct termios *tio,
290: u_int sx, u_int sy, u_int hlimit,char **cause)
1.1 nicm 291: {
1.14 nicm 292: struct window *w;
293: struct window_pane *wp;
1.1 nicm 294:
295: w = window_create1(sx, sy);
1.16 nicm 296: wp = window_add_pane(w, hlimit);
1.14 nicm 297: layout_init(w);
1.23 nicm 298: if (window_pane_spawn(wp, cmd, shell, cwd, env, tio, cause) != 0) {
1.1 nicm 299: window_destroy(w);
300: return (NULL);
301: }
302: w->active = TAILQ_FIRST(&w->panes);
303: if (name != NULL) {
304: w->name = xstrdup(name);
305: options_set_number(&w->options, "automatic-rename", 0);
306: } else
307: w->name = default_window_name(w);
308: return (w);
309: }
310:
311: void
312: window_destroy(struct window *w)
313: {
314: u_int i;
315:
316: if (window_index(w, &i) != 0)
317: fatalx("index not found");
318: ARRAY_SET(&windows, i, NULL);
319: while (!ARRAY_EMPTY(&windows) && ARRAY_LAST(&windows) == NULL)
320: ARRAY_TRUNC(&windows, 1);
321:
1.14 nicm 322: if (w->layout_root != NULL)
323: layout_free(w);
324:
1.38 nicm 325: evtimer_del(&w->name_timer);
326:
1.1 nicm 327: options_free(&w->options);
328:
329: window_destroy_panes(w);
330:
331: if (w->name != NULL)
332: xfree(w->name);
333: xfree(w);
334: }
335:
1.15 nicm 336: void
1.1 nicm 337: window_resize(struct window *w, u_int sx, u_int sy)
338: {
339: w->sx = sx;
340: w->sy = sy;
341: }
342:
343: void
344: window_set_active_pane(struct window *w, struct window_pane *wp)
345: {
1.59 nicm 346: if (wp == w->active)
347: return;
1.58 nicm 348: w->last = w->active;
1.1 nicm 349: w->active = wp;
1.10 nicm 350: while (!window_pane_visible(w->active)) {
1.1 nicm 351: w->active = TAILQ_PREV(w->active, window_panes, entry);
1.10 nicm 352: if (w->active == NULL)
353: w->active = TAILQ_LAST(&w->panes, window_panes);
354: if (w->active == wp)
355: return;
1.29 nicm 356: }
357: }
358:
1.66 nicm 359: struct window_pane *
360: window_get_active_at(struct window *w, u_int x, u_int y)
1.29 nicm 361: {
362: struct window_pane *wp;
363:
364: TAILQ_FOREACH(wp, &w->panes, entry) {
1.66 nicm 365: if (!window_pane_visible(wp))
1.29 nicm 366: continue;
1.66 nicm 367: if (x < wp->xoff || x > wp->xoff + wp->sx)
1.29 nicm 368: continue;
1.66 nicm 369: if (y < wp->yoff || y > wp->yoff + wp->sy)
1.29 nicm 370: continue;
1.66 nicm 371: return (wp);
372: }
373: return (NULL);
374: }
375:
376: void
377: window_set_active_at(struct window *w, u_int x, u_int y)
378: {
379: struct window_pane *wp;
380:
381: wp = window_get_active_at(w, x, y);
382: if (wp != NULL && wp != w->active)
1.29 nicm 383: window_set_active_pane(w, wp);
1.66 nicm 384: }
385:
386: struct window_pane *
387: window_find_string(struct window *w, const char *s)
388: {
389: u_int x, y;
390:
391: x = w->sx / 2;
392: y = w->sy / 2;
393:
394: if (strcasecmp(s, "top") == 0)
395: y = 0;
396: else if (strcasecmp(s, "bottom") == 0)
397: y = w->sy - 1;
398: else if (strcasecmp(s, "left") == 0)
399: x = 0;
400: else if (strcasecmp(s, "right") == 0)
401: x = w->sx - 1;
402: else if (strcasecmp(s, "top-left") == 0) {
403: x = 0;
404: y = 0;
405: } else if (strcasecmp(s, "top-right") == 0) {
406: x = w->sx - 1;
407: y = 0;
408: } else if (strcasecmp(s, "bottom-left") == 0) {
409: x = 0;
410: y = w->sy - 1;
411: } else if (strcasecmp(s, "bottom-right") == 0) {
412: x = w->sx - 1;
413: y = w->sy - 1;
414: } else
415: return (NULL);
416:
417: return (window_get_active_at(w, x, y));
1.1 nicm 418: }
419:
420: struct window_pane *
1.16 nicm 421: window_add_pane(struct window *w, u_int hlimit)
1.1 nicm 422: {
423: struct window_pane *wp;
424:
1.14 nicm 425: wp = window_pane_create(w, w->sx, w->sy, hlimit);
1.1 nicm 426: if (TAILQ_EMPTY(&w->panes))
427: TAILQ_INSERT_HEAD(&w->panes, wp, entry);
428: else
429: TAILQ_INSERT_AFTER(&w->panes, w->active, wp, entry);
430: return (wp);
431: }
432:
433: void
434: window_remove_pane(struct window *w, struct window_pane *wp)
435: {
1.57 nicm 436: if (wp == w->active) {
1.58 nicm 437: w->active = w->last;
438: w->last = NULL;
439: if (w->active == NULL) {
440: w->active = TAILQ_PREV(wp, window_panes, entry);
441: if (w->active == NULL)
442: w->active = TAILQ_NEXT(wp, entry);
443: }
444: } else if (wp == w->last)
445: w->last = NULL;
1.1 nicm 446:
447: TAILQ_REMOVE(&w->panes, wp, entry);
448: window_pane_destroy(wp);
449: }
450:
451: struct window_pane *
452: window_pane_at_index(struct window *w, u_int idx)
453: {
454: struct window_pane *wp;
455: u_int n;
456:
1.67 nicm 457: n = options_get_number(&w->options, "pane-base-index");
1.1 nicm 458: TAILQ_FOREACH(wp, &w->panes, entry) {
459: if (n == idx)
460: return (wp);
461: n++;
462: }
463: return (NULL);
1.53 nicm 464: }
465:
466: struct window_pane *
467: window_pane_next_by_number(struct window *w, struct window_pane *wp, u_int n)
468: {
469: for (; n > 0; n--) {
470: if ((wp = TAILQ_NEXT(wp, entry)) == NULL)
471: wp = TAILQ_FIRST(&w->panes);
472: }
473:
474: return (wp);
475: }
476:
477: struct window_pane *
478: window_pane_previous_by_number(struct window *w, struct window_pane *wp,
479: u_int n)
480: {
481: for (; n > 0; n--) {
482: if ((wp = TAILQ_PREV(wp, window_panes, entry)) == NULL)
483: wp = TAILQ_LAST(&w->panes, window_panes);
484: }
485:
486: return (wp);
1.13 nicm 487: }
488:
1.69 ! nicm 489: int
! 490: window_pane_index(struct window_pane *wp, u_int *i)
1.13 nicm 491: {
492: struct window_pane *wq;
1.69 ! nicm 493: struct window *w = wp->window;
1.13 nicm 494:
1.69 ! nicm 495: *i = options_get_number(&w->options, "pane-base-index");
1.13 nicm 496: TAILQ_FOREACH(wq, &w->panes, entry) {
1.69 ! nicm 497: if (wp == wq) {
! 498: return (0);
! 499: }
! 500: (*i)++;
1.13 nicm 501: }
1.69 ! nicm 502:
! 503: return (-1);
1.1 nicm 504: }
505:
506: u_int
507: window_count_panes(struct window *w)
508: {
509: struct window_pane *wp;
510: u_int n;
511:
512: n = 0;
513: TAILQ_FOREACH(wp, &w->panes, entry)
514: n++;
515: return (n);
516: }
517:
518: void
519: window_destroy_panes(struct window *w)
520: {
521: struct window_pane *wp;
522:
523: while (!TAILQ_EMPTY(&w->panes)) {
524: wp = TAILQ_FIRST(&w->panes);
525: TAILQ_REMOVE(&w->panes, wp, entry);
526: window_pane_destroy(wp);
527: }
1.61 nicm 528: }
529:
530: /* Return list of printable window flag symbols. No flags is just a space. */
531: char *
532: window_printable_flags(struct session *s, struct winlink *wl)
533: {
534: char flags[BUFSIZ];
535: int pos;
536:
537: pos = 0;
538: if (wl->flags & WINLINK_ACTIVITY)
539: flags[pos++] = '#';
540: if (wl->flags & WINLINK_BELL)
541: flags[pos++] = '!';
542: if (wl->flags & WINLINK_CONTENT)
543: flags[pos++] = '+';
544: if (wl->flags & WINLINK_SILENCE)
545: flags[pos++] = '~';
546: if (wl == s->curw)
547: flags[pos++] = '*';
548: if (wl == TAILQ_FIRST(&s->lastw))
549: flags[pos++] = '-';
550: if (pos == 0)
551: flags[pos++] = ' ';
552: flags[pos] = '\0';
553: return (xstrdup(flags));
1.1 nicm 554: }
555:
1.64 nicm 556: /* Find pane in global tree by id. */
557: struct window_pane *
558: window_pane_find_by_id(u_int id)
559: {
560: struct window_pane wp;
561:
562: wp.id = id;
563: return (RB_FIND(window_pane_tree, &all_window_panes, &wp));
564: }
565:
1.1 nicm 566: struct window_pane *
567: window_pane_create(struct window *w, u_int sx, u_int sy, u_int hlimit)
568: {
569: struct window_pane *wp;
570:
571: wp = xcalloc(1, sizeof *wp);
572: wp->window = w;
573:
1.64 nicm 574: wp->id = next_window_pane++;
575: RB_INSERT(window_pane_tree, &all_window_panes, wp);
576:
1.1 nicm 577: wp->cmd = NULL;
1.23 nicm 578: wp->shell = NULL;
1.1 nicm 579: wp->cwd = NULL;
580:
581: wp->fd = -1;
1.37 nicm 582: wp->event = NULL;
1.1 nicm 583:
584: wp->mode = NULL;
1.14 nicm 585:
586: wp->layout_cell = NULL;
1.1 nicm 587:
588: wp->xoff = 0;
1.42 nicm 589: wp->yoff = 0;
1.1 nicm 590:
591: wp->sx = sx;
592: wp->sy = sy;
593:
1.32 nicm 594: wp->pipe_fd = -1;
595: wp->pipe_off = 0;
1.36 nicm 596: wp->pipe_event = NULL;
1.32 nicm 597:
1.9 nicm 598: wp->saved_grid = NULL;
599:
1.1 nicm 600: screen_init(&wp->base, sx, sy, hlimit);
601: wp->screen = &wp->base;
602:
603: input_init(wp);
604:
605: return (wp);
606: }
607:
608: void
609: window_pane_destroy(struct window_pane *wp)
610: {
1.55 nicm 611: window_pane_reset_mode(wp);
612:
1.37 nicm 613: if (wp->fd != -1) {
1.1 nicm 614: close(wp->fd);
1.37 nicm 615: bufferevent_free(wp->event);
616: }
1.1 nicm 617:
618: input_free(wp);
619:
620: screen_free(&wp->base);
1.9 nicm 621: if (wp->saved_grid != NULL)
622: grid_destroy(wp->saved_grid);
1.1 nicm 623:
1.32 nicm 624: if (wp->pipe_fd != -1) {
625: close(wp->pipe_fd);
1.36 nicm 626: bufferevent_free(wp->pipe_event);
1.32 nicm 627: }
628:
1.64 nicm 629: RB_REMOVE(window_pane_tree, &all_window_panes, wp);
630:
1.1 nicm 631: if (wp->cwd != NULL)
632: xfree(wp->cwd);
1.23 nicm 633: if (wp->shell != NULL)
634: xfree(wp->shell);
1.1 nicm 635: if (wp->cmd != NULL)
636: xfree(wp->cmd);
637: xfree(wp);
638: }
639:
640: int
1.23 nicm 641: window_pane_spawn(struct window_pane *wp, const char *cmd, const char *shell,
1.21 nicm 642: const char *cwd, struct environ *env, struct termios *tio, char **cause)
1.1 nicm 643: {
1.47 nicm 644: struct winsize ws;
1.64 nicm 645: char *argv0, paneid[16];
1.47 nicm 646: const char *ptr;
647: struct termios tio2;
1.1 nicm 648:
1.37 nicm 649: if (wp->fd != -1) {
1.1 nicm 650: close(wp->fd);
1.37 nicm 651: bufferevent_free(wp->event);
652: }
1.1 nicm 653: if (cmd != NULL) {
654: if (wp->cmd != NULL)
655: xfree(wp->cmd);
656: wp->cmd = xstrdup(cmd);
657: }
1.23 nicm 658: if (shell != NULL) {
659: if (wp->shell != NULL)
660: xfree(wp->shell);
661: wp->shell = xstrdup(shell);
662: }
1.1 nicm 663: if (cwd != NULL) {
664: if (wp->cwd != NULL)
665: xfree(wp->cwd);
666: wp->cwd = xstrdup(cwd);
667: }
668:
669: memset(&ws, 0, sizeof ws);
670: ws.ws_col = screen_size_x(&wp->base);
671: ws.ws_row = screen_size_y(&wp->base);
672:
1.42 nicm 673: switch (wp->pid = forkpty(&wp->fd, wp->tty, NULL, &ws)) {
1.1 nicm 674: case -1:
675: wp->fd = -1;
676: xasprintf(cause, "%s: %s", cmd, strerror(errno));
677: return (-1);
678: case 0:
679: if (chdir(wp->cwd) != 0)
680: chdir("/");
1.25 nicm 681:
682: if (tcgetattr(STDIN_FILENO, &tio2) != 0)
683: fatal("tcgetattr failed");
684: if (tio != NULL)
685: memcpy(tio2.c_cc, tio->c_cc, sizeof tio2.c_cc);
686: tio2.c_cc[VERASE] = '\177';
687: if (tcsetattr(STDIN_FILENO, TCSANOW, &tio2) != 0)
688: fatal("tcgetattr failed");
1.18 nicm 689:
1.56 nicm 690: closefrom(STDERR_FILENO + 1);
691:
1.64 nicm 692: xsnprintf(paneid, sizeof paneid, "%%%u", wp->id);
693: environ_set(env, "TMUX_PANE", paneid);
1.47 nicm 694: environ_push(env);
1.18 nicm 695:
1.54 nicm 696: clear_signals(1);
1.1 nicm 697: log_close();
698:
1.8 nicm 699: if (*wp->cmd != '\0') {
1.24 nicm 700: /* Set SHELL but only if it is currently not useful. */
701: shell = getenv("SHELL");
1.68 nicm 702: if (checkshell(shell))
1.24 nicm 703: setenv("SHELL", wp->shell, 1);
704:
1.8 nicm 705: execl(_PATH_BSHELL, "sh", "-c", wp->cmd, (char *) NULL);
706: fatal("execl failed");
707: }
708:
709: /* No command; fork a login shell. */
1.23 nicm 710: ptr = strrchr(wp->shell, '/');
711: if (ptr != NULL && *(ptr + 1) != '\0')
1.8 nicm 712: xasprintf(&argv0, "-%s", ptr + 1);
713: else
1.23 nicm 714: xasprintf(&argv0, "-%s", wp->shell);
1.24 nicm 715: setenv("SHELL", wp->shell, 1);
1.23 nicm 716: execl(wp->shell, argv0, (char *) NULL);
1.1 nicm 717: fatal("execl failed");
718: }
719:
1.62 nicm 720: setblocking(wp->fd, 0);
721:
1.37 nicm 722: wp->event = bufferevent_new(wp->fd,
723: window_pane_read_callback, NULL, window_pane_error_callback, wp);
724: bufferevent_enable(wp->event, EV_READ|EV_WRITE);
1.1 nicm 725:
726: return (0);
727: }
728:
1.41 nicm 729: /* ARGSUSED */
1.15 nicm 730: void
1.37 nicm 731: window_pane_read_callback(unused struct bufferevent *bufev, void *data)
732: {
1.46 nicm 733: struct window_pane *wp = data;
734: char *new_data;
735: size_t new_size;
736:
737: new_size = EVBUFFER_LENGTH(wp->event->input) - wp->pipe_off;
738: if (wp->pipe_fd != -1 && new_size > 0) {
739: new_data = EVBUFFER_DATA(wp->event->input);
740: bufferevent_write(wp->pipe_event, new_data, new_size);
741: }
742:
743: input_parse(wp);
1.37 nicm 744:
1.46 nicm 745: wp->pipe_off = EVBUFFER_LENGTH(wp->event->input);
1.60 nicm 746:
747: /*
748: * If we get here, we're not outputting anymore, so set the silence
749: * flag on the window.
750: */
751: wp->window->flags |= WINDOW_SILENCE;
752: if (gettimeofday(&wp->window->silence_timer, NULL) != 0)
753: fatal("gettimeofday failed.");
1.37 nicm 754: }
755:
1.41 nicm 756: /* ARGSUSED */
1.37 nicm 757: void
758: window_pane_error_callback(
759: unused struct bufferevent *bufev, unused short what, void *data)
760: {
761: struct window_pane *wp = data;
762:
1.39 nicm 763: server_destroy_pane(wp);
1.37 nicm 764: }
765:
766: void
1.1 nicm 767: window_pane_resize(struct window_pane *wp, u_int sx, u_int sy)
768: {
769: struct winsize ws;
770:
771: if (sx == wp->sx && sy == wp->sy)
1.15 nicm 772: return;
1.1 nicm 773: wp->sx = sx;
774: wp->sy = sy;
775:
776: memset(&ws, 0, sizeof ws);
777: ws.ws_col = sx;
778: ws.ws_row = sy;
779:
780: screen_resize(&wp->base, sx, sy);
781: if (wp->mode != NULL)
782: wp->mode->resize(wp, sx, sy);
783:
784: if (wp->fd != -1 && ioctl(wp->fd, TIOCSWINSZ, &ws) == -1)
785: fatal("ioctl failed");
1.44 nicm 786: }
787:
788: /*
789: * Enter alternative screen mode. A copy of the visible screen is saved and the
790: * history is not updated
791: */
792: void
793: window_pane_alternate_on(struct window_pane *wp, struct grid_cell *gc)
794: {
795: struct screen *s = &wp->base;
796: u_int sx, sy;
797:
798: if (wp->saved_grid != NULL)
799: return;
800: if (!options_get_number(&wp->window->options, "alternate-screen"))
801: return;
802: sx = screen_size_x(s);
803: sy = screen_size_y(s);
804:
805: wp->saved_grid = grid_create(sx, sy, 0);
806: grid_duplicate_lines(wp->saved_grid, 0, s->grid, screen_hsize(s), sy);
807: wp->saved_cx = s->cx;
808: wp->saved_cy = s->cy;
809: memcpy(&wp->saved_cell, gc, sizeof wp->saved_cell);
810:
811: grid_view_clear(s->grid, 0, 0, sx, sy);
812:
813: wp->base.grid->flags &= ~GRID_HISTORY;
814:
815: wp->flags |= PANE_REDRAW;
816: }
817:
818: /* Exit alternate screen mode and restore the copied grid. */
819: void
820: window_pane_alternate_off(struct window_pane *wp, struct grid_cell *gc)
821: {
822: struct screen *s = &wp->base;
823: u_int sx, sy;
824:
825: if (wp->saved_grid == NULL)
826: return;
827: if (!options_get_number(&wp->window->options, "alternate-screen"))
828: return;
829: sx = screen_size_x(s);
830: sy = screen_size_y(s);
831:
832: /*
833: * If the current size is bigger, temporarily resize to the old size
834: * before copying back.
835: */
836: if (sy > wp->saved_grid->sy)
837: screen_resize(s, sx, wp->saved_grid->sy);
838:
839: /* Restore the grid, cursor position and cell. */
840: grid_duplicate_lines(s->grid, screen_hsize(s), wp->saved_grid, 0, sy);
841: s->cx = wp->saved_cx;
842: if (s->cx > screen_size_x(s) - 1)
843: s->cx = screen_size_x(s) - 1;
844: s->cy = wp->saved_cy;
845: if (s->cy > screen_size_y(s) - 1)
846: s->cy = screen_size_y(s) - 1;
847: memcpy(gc, &wp->saved_cell, sizeof *gc);
848:
849: /*
850: * Turn history back on (so resize can use it) and then resize back to
851: * the current size.
852: */
853: wp->base.grid->flags |= GRID_HISTORY;
854: if (sy > wp->saved_grid->sy)
855: screen_resize(s, sx, sy);
856:
857: grid_destroy(wp->saved_grid);
858: wp->saved_grid = NULL;
859:
860: wp->flags |= PANE_REDRAW;
1.1 nicm 861: }
862:
863: int
864: window_pane_set_mode(struct window_pane *wp, const struct window_mode *mode)
865: {
866: struct screen *s;
867:
1.15 nicm 868: if (wp->mode != NULL)
1.1 nicm 869: return (1);
870: wp->mode = mode;
871:
872: if ((s = wp->mode->init(wp)) != NULL)
873: wp->screen = s;
1.34 nicm 874: wp->flags |= PANE_REDRAW;
1.1 nicm 875: return (0);
876: }
877:
878: void
879: window_pane_reset_mode(struct window_pane *wp)
880: {
881: if (wp->mode == NULL)
882: return;
883:
884: wp->mode->free(wp);
885: wp->mode = NULL;
886:
887: wp->screen = &wp->base;
1.34 nicm 888: wp->flags |= PANE_REDRAW;
1.1 nicm 889: }
890:
891: void
1.51 nicm 892: window_pane_key(struct window_pane *wp, struct session *sess, int key)
1.1 nicm 893: {
1.27 nicm 894: struct window_pane *wp2;
895:
1.30 nicm 896: if (!window_pane_visible(wp))
1.3 nicm 897: return;
898:
1.1 nicm 899: if (wp->mode != NULL) {
900: if (wp->mode->key != NULL)
1.51 nicm 901: wp->mode->key(wp, sess, key);
1.27 nicm 902: return;
1.30 nicm 903: }
1.27 nicm 904:
1.30 nicm 905: if (wp->fd == -1)
906: return;
1.27 nicm 907: input_key(wp, key);
908: if (options_get_number(&wp->window->options, "synchronize-panes")) {
909: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
910: if (wp2 == wp || wp2->mode != NULL)
911: continue;
912: if (wp2->fd != -1 && window_pane_visible(wp2))
913: input_key(wp2, key);
914: }
915: }
1.1 nicm 916: }
917:
918: void
919: window_pane_mouse(
1.51 nicm 920: struct window_pane *wp, struct session *sess, struct mouse_event *m)
1.1 nicm 921: {
1.30 nicm 922: if (!window_pane_visible(wp))
1.3 nicm 923: return;
924:
1.31 nicm 925: if (m->x < wp->xoff || m->x >= wp->xoff + wp->sx)
1.1 nicm 926: return;
1.31 nicm 927: if (m->y < wp->yoff || m->y >= wp->yoff + wp->sy)
1.1 nicm 928: return;
1.31 nicm 929: m->x -= wp->xoff;
930: m->y -= wp->yoff;
1.1 nicm 931:
932: if (wp->mode != NULL) {
1.65 nicm 933: if (wp->mode->mouse != NULL &&
934: options_get_number(&wp->window->options, "mode-mouse"))
1.51 nicm 935: wp->mode->mouse(wp, sess, m);
1.30 nicm 936: } else if (wp->fd != -1)
1.31 nicm 937: input_mouse(wp, m);
1.10 nicm 938: }
939:
940: int
941: window_pane_visible(struct window_pane *wp)
942: {
943: struct window *w = wp->window;
944:
945: if (wp->xoff >= w->sx || wp->yoff >= w->sy)
946: return (0);
947: if (wp->xoff + wp->sx > w->sx || wp->yoff + wp->sy > w->sy)
948: return (0);
949: return (1);
1.1 nicm 950: }
951:
952: char *
1.5 nicm 953: window_pane_search(struct window_pane *wp, const char *searchstr, u_int *lineno)
1.1 nicm 954: {
1.4 nicm 955: struct screen *s = &wp->base;
1.5 nicm 956: char *newsearchstr, *line, *msg;
1.4 nicm 957: u_int i;
958:
1.5 nicm 959: msg = NULL;
960: xasprintf(&newsearchstr, "*%s*", searchstr);
961:
1.4 nicm 962: for (i = 0; i < screen_size_y(s); i++) {
963: line = grid_view_string_cells(s->grid, 0, i, screen_size_x(s));
1.5 nicm 964: if (fnmatch(newsearchstr, line, 0) == 0) {
965: msg = line;
966: if (lineno != NULL)
967: *lineno = i;
968: break;
969: }
1.4 nicm 970: xfree(line);
971: }
1.5 nicm 972:
973: xfree(newsearchstr);
974: return (msg);
1.45 nicm 975: }
976:
977: /* Find the pane directly above another. */
978: struct window_pane *
979: window_pane_find_up(struct window_pane *wp)
980: {
981: struct window_pane *wp2;
982: u_int left, top;
983:
984: if (wp == NULL || !window_pane_visible(wp))
985: return (NULL);
986:
987: top = wp->yoff;
988: if (top == 0)
989: top = wp->window->sy + 1;
990: left = wp->xoff;
991:
992: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
993: if (!window_pane_visible(wp2))
994: continue;
995: if (wp2->yoff + wp2->sy + 1 != top)
996: continue;
997: if (left >= wp2->xoff && left <= wp2->xoff + wp2->sx)
998: return (wp2);
999: }
1000: return (NULL);
1001: }
1002:
1003: /* Find the pane directly below another. */
1004: struct window_pane *
1005: window_pane_find_down(struct window_pane *wp)
1006: {
1007: struct window_pane *wp2;
1008: u_int left, bottom;
1009:
1010: if (wp == NULL || !window_pane_visible(wp))
1011: return (NULL);
1012:
1013: bottom = wp->yoff + wp->sy + 1;
1014: if (bottom >= wp->window->sy)
1015: bottom = 0;
1016: left = wp->xoff;
1017:
1018: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
1019: if (!window_pane_visible(wp2))
1020: continue;
1021: if (wp2->yoff != bottom)
1022: continue;
1023: if (left >= wp2->xoff && left <= wp2->xoff + wp2->sx)
1024: return (wp2);
1025: }
1026: return (NULL);
1027: }
1028:
1029: /*
1030: * Find the pane directly to the left of another, adjacent to the left side and
1031: * containing the top edge.
1032: */
1033: struct window_pane *
1034: window_pane_find_left(struct window_pane *wp)
1035: {
1036: struct window_pane *wp2;
1037: u_int left, top;
1038:
1039: if (wp == NULL || !window_pane_visible(wp))
1040: return (NULL);
1041:
1042: left = wp->xoff;
1043: if (left == 0)
1044: left = wp->window->sx + 1;
1045: top = wp->yoff;
1046:
1047: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
1048: if (!window_pane_visible(wp2))
1049: continue;
1050: if (wp2->xoff + wp2->sx + 1 != left)
1051: continue;
1052: if (top >= wp2->yoff && top <= wp2->yoff + wp2->sy)
1053: return (wp2);
1054: }
1055: return (NULL);
1056: }
1057:
1058: /*
1059: * Find the pane directly to the right of another, that is adjacent to the
1060: * right edge and including the top edge.
1061: */
1062: struct window_pane *
1063: window_pane_find_right(struct window_pane *wp)
1064: {
1065: struct window_pane *wp2;
1066: u_int right, top;
1067:
1068: if (wp == NULL || !window_pane_visible(wp))
1069: return (NULL);
1070:
1071: right = wp->xoff + wp->sx + 1;
1072: if (right >= wp->window->sx)
1073: right = 0;
1074: top = wp->yoff;
1075:
1076: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
1077: if (!window_pane_visible(wp2))
1078: continue;
1079: if (wp2->xoff != right)
1080: continue;
1081: if (top >= wp2->yoff && top <= wp2->yoff + wp2->sy)
1082: return (wp2);
1083: }
1084: return (NULL);
1.1 nicm 1085: }
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