Annotation of src/usr.bin/tmux/window.c, Revision 1.67
1.67 ! nicm 1: /* $OpenBSD: window.c,v 1.66 2011/06/05 10:53:05 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:
489: u_int
490: window_pane_index(struct window *w, struct window_pane *wp)
491: {
492: struct window_pane *wq;
493: u_int n;
494:
1.67 ! nicm 495: n = options_get_number(&w->options, "pane-base-index");
1.13 nicm 496: TAILQ_FOREACH(wq, &w->panes, entry) {
497: if (wp == wq)
498: break;
499: n++;
500: }
501: return (n);
1.1 nicm 502: }
503:
504: u_int
505: window_count_panes(struct window *w)
506: {
507: struct window_pane *wp;
508: u_int n;
509:
510: n = 0;
511: TAILQ_FOREACH(wp, &w->panes, entry)
512: n++;
513: return (n);
514: }
515:
516: void
517: window_destroy_panes(struct window *w)
518: {
519: struct window_pane *wp;
520:
521: while (!TAILQ_EMPTY(&w->panes)) {
522: wp = TAILQ_FIRST(&w->panes);
523: TAILQ_REMOVE(&w->panes, wp, entry);
524: window_pane_destroy(wp);
525: }
1.61 nicm 526: }
527:
528: /* Return list of printable window flag symbols. No flags is just a space. */
529: char *
530: window_printable_flags(struct session *s, struct winlink *wl)
531: {
532: char flags[BUFSIZ];
533: int pos;
534:
535: pos = 0;
536: if (wl->flags & WINLINK_ACTIVITY)
537: flags[pos++] = '#';
538: if (wl->flags & WINLINK_BELL)
539: flags[pos++] = '!';
540: if (wl->flags & WINLINK_CONTENT)
541: flags[pos++] = '+';
542: if (wl->flags & WINLINK_SILENCE)
543: flags[pos++] = '~';
544: if (wl == s->curw)
545: flags[pos++] = '*';
546: if (wl == TAILQ_FIRST(&s->lastw))
547: flags[pos++] = '-';
548: if (pos == 0)
549: flags[pos++] = ' ';
550: flags[pos] = '\0';
551: return (xstrdup(flags));
1.1 nicm 552: }
553:
1.64 nicm 554: /* Find pane in global tree by id. */
555: struct window_pane *
556: window_pane_find_by_id(u_int id)
557: {
558: struct window_pane wp;
559:
560: wp.id = id;
561: return (RB_FIND(window_pane_tree, &all_window_panes, &wp));
562: }
563:
1.1 nicm 564: struct window_pane *
565: window_pane_create(struct window *w, u_int sx, u_int sy, u_int hlimit)
566: {
567: struct window_pane *wp;
568:
569: wp = xcalloc(1, sizeof *wp);
570: wp->window = w;
571:
1.64 nicm 572: wp->id = next_window_pane++;
573: RB_INSERT(window_pane_tree, &all_window_panes, wp);
574:
1.1 nicm 575: wp->cmd = NULL;
1.23 nicm 576: wp->shell = NULL;
1.1 nicm 577: wp->cwd = NULL;
578:
579: wp->fd = -1;
1.37 nicm 580: wp->event = NULL;
1.1 nicm 581:
582: wp->mode = NULL;
1.14 nicm 583:
584: wp->layout_cell = NULL;
1.1 nicm 585:
586: wp->xoff = 0;
1.42 nicm 587: wp->yoff = 0;
1.1 nicm 588:
589: wp->sx = sx;
590: wp->sy = sy;
591:
1.32 nicm 592: wp->pipe_fd = -1;
593: wp->pipe_off = 0;
1.36 nicm 594: wp->pipe_event = NULL;
1.32 nicm 595:
1.9 nicm 596: wp->saved_grid = NULL;
597:
1.1 nicm 598: screen_init(&wp->base, sx, sy, hlimit);
599: wp->screen = &wp->base;
600:
601: input_init(wp);
602:
603: return (wp);
604: }
605:
606: void
607: window_pane_destroy(struct window_pane *wp)
608: {
1.55 nicm 609: window_pane_reset_mode(wp);
610:
1.37 nicm 611: if (wp->fd != -1) {
1.1 nicm 612: close(wp->fd);
1.37 nicm 613: bufferevent_free(wp->event);
614: }
1.1 nicm 615:
616: input_free(wp);
617:
618: screen_free(&wp->base);
1.9 nicm 619: if (wp->saved_grid != NULL)
620: grid_destroy(wp->saved_grid);
1.1 nicm 621:
1.32 nicm 622: if (wp->pipe_fd != -1) {
623: close(wp->pipe_fd);
1.36 nicm 624: bufferevent_free(wp->pipe_event);
1.32 nicm 625: }
626:
1.64 nicm 627: RB_REMOVE(window_pane_tree, &all_window_panes, wp);
628:
1.1 nicm 629: if (wp->cwd != NULL)
630: xfree(wp->cwd);
1.23 nicm 631: if (wp->shell != NULL)
632: xfree(wp->shell);
1.1 nicm 633: if (wp->cmd != NULL)
634: xfree(wp->cmd);
635: xfree(wp);
636: }
637:
638: int
1.23 nicm 639: window_pane_spawn(struct window_pane *wp, const char *cmd, const char *shell,
1.21 nicm 640: const char *cwd, struct environ *env, struct termios *tio, char **cause)
1.1 nicm 641: {
1.47 nicm 642: struct winsize ws;
1.64 nicm 643: char *argv0, paneid[16];
1.47 nicm 644: const char *ptr;
645: struct termios tio2;
1.1 nicm 646:
1.37 nicm 647: if (wp->fd != -1) {
1.1 nicm 648: close(wp->fd);
1.37 nicm 649: bufferevent_free(wp->event);
650: }
1.1 nicm 651: if (cmd != NULL) {
652: if (wp->cmd != NULL)
653: xfree(wp->cmd);
654: wp->cmd = xstrdup(cmd);
655: }
1.23 nicm 656: if (shell != NULL) {
657: if (wp->shell != NULL)
658: xfree(wp->shell);
659: wp->shell = xstrdup(shell);
660: }
1.1 nicm 661: if (cwd != NULL) {
662: if (wp->cwd != NULL)
663: xfree(wp->cwd);
664: wp->cwd = xstrdup(cwd);
665: }
666:
667: memset(&ws, 0, sizeof ws);
668: ws.ws_col = screen_size_x(&wp->base);
669: ws.ws_row = screen_size_y(&wp->base);
670:
1.42 nicm 671: switch (wp->pid = forkpty(&wp->fd, wp->tty, NULL, &ws)) {
1.1 nicm 672: case -1:
673: wp->fd = -1;
674: xasprintf(cause, "%s: %s", cmd, strerror(errno));
675: return (-1);
676: case 0:
677: if (chdir(wp->cwd) != 0)
678: chdir("/");
1.25 nicm 679:
680: if (tcgetattr(STDIN_FILENO, &tio2) != 0)
681: fatal("tcgetattr failed");
682: if (tio != NULL)
683: memcpy(tio2.c_cc, tio->c_cc, sizeof tio2.c_cc);
684: tio2.c_cc[VERASE] = '\177';
685: if (tcsetattr(STDIN_FILENO, TCSANOW, &tio2) != 0)
686: fatal("tcgetattr failed");
1.18 nicm 687:
1.56 nicm 688: closefrom(STDERR_FILENO + 1);
689:
1.64 nicm 690: xsnprintf(paneid, sizeof paneid, "%%%u", wp->id);
691: environ_set(env, "TMUX_PANE", paneid);
1.47 nicm 692: environ_push(env);
1.18 nicm 693:
1.54 nicm 694: clear_signals(1);
1.1 nicm 695: log_close();
696:
1.8 nicm 697: if (*wp->cmd != '\0') {
1.24 nicm 698: /* Set SHELL but only if it is currently not useful. */
699: shell = getenv("SHELL");
700: if (shell == NULL || *shell == '\0' || areshell(shell))
701: setenv("SHELL", wp->shell, 1);
702:
1.8 nicm 703: execl(_PATH_BSHELL, "sh", "-c", wp->cmd, (char *) NULL);
704: fatal("execl failed");
705: }
706:
707: /* No command; fork a login shell. */
1.23 nicm 708: ptr = strrchr(wp->shell, '/');
709: if (ptr != NULL && *(ptr + 1) != '\0')
1.8 nicm 710: xasprintf(&argv0, "-%s", ptr + 1);
711: else
1.23 nicm 712: xasprintf(&argv0, "-%s", wp->shell);
1.24 nicm 713: setenv("SHELL", wp->shell, 1);
1.23 nicm 714: execl(wp->shell, argv0, (char *) NULL);
1.1 nicm 715: fatal("execl failed");
716: }
717:
1.62 nicm 718: setblocking(wp->fd, 0);
719:
1.37 nicm 720: wp->event = bufferevent_new(wp->fd,
721: window_pane_read_callback, NULL, window_pane_error_callback, wp);
722: bufferevent_enable(wp->event, EV_READ|EV_WRITE);
1.1 nicm 723:
724: return (0);
725: }
726:
1.41 nicm 727: /* ARGSUSED */
1.15 nicm 728: void
1.37 nicm 729: window_pane_read_callback(unused struct bufferevent *bufev, void *data)
730: {
1.46 nicm 731: struct window_pane *wp = data;
732: char *new_data;
733: size_t new_size;
734:
735: new_size = EVBUFFER_LENGTH(wp->event->input) - wp->pipe_off;
736: if (wp->pipe_fd != -1 && new_size > 0) {
737: new_data = EVBUFFER_DATA(wp->event->input);
738: bufferevent_write(wp->pipe_event, new_data, new_size);
739: }
740:
741: input_parse(wp);
1.37 nicm 742:
1.46 nicm 743: wp->pipe_off = EVBUFFER_LENGTH(wp->event->input);
1.60 nicm 744:
745: /*
746: * If we get here, we're not outputting anymore, so set the silence
747: * flag on the window.
748: */
749: wp->window->flags |= WINDOW_SILENCE;
750: if (gettimeofday(&wp->window->silence_timer, NULL) != 0)
751: fatal("gettimeofday failed.");
1.37 nicm 752: }
753:
1.41 nicm 754: /* ARGSUSED */
1.37 nicm 755: void
756: window_pane_error_callback(
757: unused struct bufferevent *bufev, unused short what, void *data)
758: {
759: struct window_pane *wp = data;
760:
1.39 nicm 761: server_destroy_pane(wp);
1.37 nicm 762: }
763:
764: void
1.1 nicm 765: window_pane_resize(struct window_pane *wp, u_int sx, u_int sy)
766: {
767: struct winsize ws;
768:
769: if (sx == wp->sx && sy == wp->sy)
1.15 nicm 770: return;
1.1 nicm 771: wp->sx = sx;
772: wp->sy = sy;
773:
774: memset(&ws, 0, sizeof ws);
775: ws.ws_col = sx;
776: ws.ws_row = sy;
777:
778: screen_resize(&wp->base, sx, sy);
779: if (wp->mode != NULL)
780: wp->mode->resize(wp, sx, sy);
781:
782: if (wp->fd != -1 && ioctl(wp->fd, TIOCSWINSZ, &ws) == -1)
783: fatal("ioctl failed");
1.44 nicm 784: }
785:
786: /*
787: * Enter alternative screen mode. A copy of the visible screen is saved and the
788: * history is not updated
789: */
790: void
791: window_pane_alternate_on(struct window_pane *wp, struct grid_cell *gc)
792: {
793: struct screen *s = &wp->base;
794: u_int sx, sy;
795:
796: if (wp->saved_grid != NULL)
797: return;
798: if (!options_get_number(&wp->window->options, "alternate-screen"))
799: return;
800: sx = screen_size_x(s);
801: sy = screen_size_y(s);
802:
803: wp->saved_grid = grid_create(sx, sy, 0);
804: grid_duplicate_lines(wp->saved_grid, 0, s->grid, screen_hsize(s), sy);
805: wp->saved_cx = s->cx;
806: wp->saved_cy = s->cy;
807: memcpy(&wp->saved_cell, gc, sizeof wp->saved_cell);
808:
809: grid_view_clear(s->grid, 0, 0, sx, sy);
810:
811: wp->base.grid->flags &= ~GRID_HISTORY;
812:
813: wp->flags |= PANE_REDRAW;
814: }
815:
816: /* Exit alternate screen mode and restore the copied grid. */
817: void
818: window_pane_alternate_off(struct window_pane *wp, struct grid_cell *gc)
819: {
820: struct screen *s = &wp->base;
821: u_int sx, sy;
822:
823: if (wp->saved_grid == NULL)
824: return;
825: if (!options_get_number(&wp->window->options, "alternate-screen"))
826: return;
827: sx = screen_size_x(s);
828: sy = screen_size_y(s);
829:
830: /*
831: * If the current size is bigger, temporarily resize to the old size
832: * before copying back.
833: */
834: if (sy > wp->saved_grid->sy)
835: screen_resize(s, sx, wp->saved_grid->sy);
836:
837: /* Restore the grid, cursor position and cell. */
838: grid_duplicate_lines(s->grid, screen_hsize(s), wp->saved_grid, 0, sy);
839: s->cx = wp->saved_cx;
840: if (s->cx > screen_size_x(s) - 1)
841: s->cx = screen_size_x(s) - 1;
842: s->cy = wp->saved_cy;
843: if (s->cy > screen_size_y(s) - 1)
844: s->cy = screen_size_y(s) - 1;
845: memcpy(gc, &wp->saved_cell, sizeof *gc);
846:
847: /*
848: * Turn history back on (so resize can use it) and then resize back to
849: * the current size.
850: */
851: wp->base.grid->flags |= GRID_HISTORY;
852: if (sy > wp->saved_grid->sy)
853: screen_resize(s, sx, sy);
854:
855: grid_destroy(wp->saved_grid);
856: wp->saved_grid = NULL;
857:
858: wp->flags |= PANE_REDRAW;
1.1 nicm 859: }
860:
861: int
862: window_pane_set_mode(struct window_pane *wp, const struct window_mode *mode)
863: {
864: struct screen *s;
865:
1.15 nicm 866: if (wp->mode != NULL)
1.1 nicm 867: return (1);
868: wp->mode = mode;
869:
870: if ((s = wp->mode->init(wp)) != NULL)
871: wp->screen = s;
1.34 nicm 872: wp->flags |= PANE_REDRAW;
1.1 nicm 873: return (0);
874: }
875:
876: void
877: window_pane_reset_mode(struct window_pane *wp)
878: {
879: if (wp->mode == NULL)
880: return;
881:
882: wp->mode->free(wp);
883: wp->mode = NULL;
884:
885: wp->screen = &wp->base;
1.34 nicm 886: wp->flags |= PANE_REDRAW;
1.1 nicm 887: }
888:
889: void
1.51 nicm 890: window_pane_key(struct window_pane *wp, struct session *sess, int key)
1.1 nicm 891: {
1.27 nicm 892: struct window_pane *wp2;
893:
1.30 nicm 894: if (!window_pane_visible(wp))
1.3 nicm 895: return;
896:
1.1 nicm 897: if (wp->mode != NULL) {
898: if (wp->mode->key != NULL)
1.51 nicm 899: wp->mode->key(wp, sess, key);
1.27 nicm 900: return;
1.30 nicm 901: }
1.27 nicm 902:
1.30 nicm 903: if (wp->fd == -1)
904: return;
1.27 nicm 905: input_key(wp, key);
906: if (options_get_number(&wp->window->options, "synchronize-panes")) {
907: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
908: if (wp2 == wp || wp2->mode != NULL)
909: continue;
910: if (wp2->fd != -1 && window_pane_visible(wp2))
911: input_key(wp2, key);
912: }
913: }
1.1 nicm 914: }
915:
916: void
917: window_pane_mouse(
1.51 nicm 918: struct window_pane *wp, struct session *sess, struct mouse_event *m)
1.1 nicm 919: {
1.30 nicm 920: if (!window_pane_visible(wp))
1.3 nicm 921: return;
922:
1.31 nicm 923: if (m->x < wp->xoff || m->x >= wp->xoff + wp->sx)
1.1 nicm 924: return;
1.31 nicm 925: if (m->y < wp->yoff || m->y >= wp->yoff + wp->sy)
1.1 nicm 926: return;
1.31 nicm 927: m->x -= wp->xoff;
928: m->y -= wp->yoff;
1.1 nicm 929:
930: if (wp->mode != NULL) {
1.65 nicm 931: if (wp->mode->mouse != NULL &&
932: options_get_number(&wp->window->options, "mode-mouse"))
1.51 nicm 933: wp->mode->mouse(wp, sess, m);
1.30 nicm 934: } else if (wp->fd != -1)
1.31 nicm 935: input_mouse(wp, m);
1.10 nicm 936: }
937:
938: int
939: window_pane_visible(struct window_pane *wp)
940: {
941: struct window *w = wp->window;
942:
943: if (wp->xoff >= w->sx || wp->yoff >= w->sy)
944: return (0);
945: if (wp->xoff + wp->sx > w->sx || wp->yoff + wp->sy > w->sy)
946: return (0);
947: return (1);
1.1 nicm 948: }
949:
950: char *
1.5 nicm 951: window_pane_search(struct window_pane *wp, const char *searchstr, u_int *lineno)
1.1 nicm 952: {
1.4 nicm 953: struct screen *s = &wp->base;
1.5 nicm 954: char *newsearchstr, *line, *msg;
1.4 nicm 955: u_int i;
956:
1.5 nicm 957: msg = NULL;
958: xasprintf(&newsearchstr, "*%s*", searchstr);
959:
1.4 nicm 960: for (i = 0; i < screen_size_y(s); i++) {
961: line = grid_view_string_cells(s->grid, 0, i, screen_size_x(s));
1.5 nicm 962: if (fnmatch(newsearchstr, line, 0) == 0) {
963: msg = line;
964: if (lineno != NULL)
965: *lineno = i;
966: break;
967: }
1.4 nicm 968: xfree(line);
969: }
1.5 nicm 970:
971: xfree(newsearchstr);
972: return (msg);
1.45 nicm 973: }
974:
975: /* Find the pane directly above another. */
976: struct window_pane *
977: window_pane_find_up(struct window_pane *wp)
978: {
979: struct window_pane *wp2;
980: u_int left, top;
981:
982: if (wp == NULL || !window_pane_visible(wp))
983: return (NULL);
984:
985: top = wp->yoff;
986: if (top == 0)
987: top = wp->window->sy + 1;
988: left = wp->xoff;
989:
990: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
991: if (!window_pane_visible(wp2))
992: continue;
993: if (wp2->yoff + wp2->sy + 1 != top)
994: continue;
995: if (left >= wp2->xoff && left <= wp2->xoff + wp2->sx)
996: return (wp2);
997: }
998: return (NULL);
999: }
1000:
1001: /* Find the pane directly below another. */
1002: struct window_pane *
1003: window_pane_find_down(struct window_pane *wp)
1004: {
1005: struct window_pane *wp2;
1006: u_int left, bottom;
1007:
1008: if (wp == NULL || !window_pane_visible(wp))
1009: return (NULL);
1010:
1011: bottom = wp->yoff + wp->sy + 1;
1012: if (bottom >= wp->window->sy)
1013: bottom = 0;
1014: left = wp->xoff;
1015:
1016: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
1017: if (!window_pane_visible(wp2))
1018: continue;
1019: if (wp2->yoff != bottom)
1020: continue;
1021: if (left >= wp2->xoff && left <= wp2->xoff + wp2->sx)
1022: return (wp2);
1023: }
1024: return (NULL);
1025: }
1026:
1027: /*
1028: * Find the pane directly to the left of another, adjacent to the left side and
1029: * containing the top edge.
1030: */
1031: struct window_pane *
1032: window_pane_find_left(struct window_pane *wp)
1033: {
1034: struct window_pane *wp2;
1035: u_int left, top;
1036:
1037: if (wp == NULL || !window_pane_visible(wp))
1038: return (NULL);
1039:
1040: left = wp->xoff;
1041: if (left == 0)
1042: left = wp->window->sx + 1;
1043: top = wp->yoff;
1044:
1045: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
1046: if (!window_pane_visible(wp2))
1047: continue;
1048: if (wp2->xoff + wp2->sx + 1 != left)
1049: continue;
1050: if (top >= wp2->yoff && top <= wp2->yoff + wp2->sy)
1051: return (wp2);
1052: }
1053: return (NULL);
1054: }
1055:
1056: /*
1057: * Find the pane directly to the right of another, that is adjacent to the
1058: * right edge and including the top edge.
1059: */
1060: struct window_pane *
1061: window_pane_find_right(struct window_pane *wp)
1062: {
1063: struct window_pane *wp2;
1064: u_int right, top;
1065:
1066: if (wp == NULL || !window_pane_visible(wp))
1067: return (NULL);
1068:
1069: right = wp->xoff + wp->sx + 1;
1070: if (right >= wp->window->sx)
1071: right = 0;
1072: top = wp->yoff;
1073:
1074: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
1075: if (!window_pane_visible(wp2))
1076: continue;
1077: if (wp2->xoff != right)
1078: continue;
1079: if (top >= wp2->yoff && top <= wp2->yoff + wp2->sy)
1080: return (wp2);
1081: }
1082: return (NULL);
1.1 nicm 1083: }
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