Annotation of src/usr.bin/tmux/server-fn.c, Revision 1.133
1.133 ! nicm 1: /* $OpenBSD: server-fn.c,v 1.132 2021/08/17 16:19:00 nicm Exp $ */
1.1 nicm 2:
3: /*
1.98 nicm 4: * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
1.1 nicm 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>
1.90 nicm 20: #include <sys/queue.h>
1.112 nicm 21: #include <sys/wait.h>
1.90 nicm 22: #include <sys/uio.h>
1.1 nicm 23:
1.90 nicm 24: #include <imsg.h>
1.60 nicm 25: #include <stdlib.h>
1.1 nicm 26: #include <string.h>
1.5 nicm 27: #include <time.h>
1.1 nicm 28: #include <unistd.h>
29:
30: #include "tmux.h"
31:
1.100 nicm 32: static struct session *server_next_session(struct session *);
1.101 nicm 33: static void server_destroy_session_group(struct session *);
1.58 nicm 34:
35: void
1.1 nicm 36: server_redraw_client(struct client *c)
37: {
1.116 nicm 38: c->flags |= CLIENT_ALLREDRAWFLAGS;
1.1 nicm 39: }
40:
41: void
42: server_status_client(struct client *c)
43: {
1.116 nicm 44: c->flags |= CLIENT_REDRAWSTATUS;
1.1 nicm 45: }
46:
47: void
48: server_redraw_session(struct session *s)
49: {
50: struct client *c;
51:
1.84 nicm 52: TAILQ_FOREACH(c, &clients, entry) {
1.1 nicm 53: if (c->session == s)
54: server_redraw_client(c);
55: }
56: }
57:
58: void
1.25 nicm 59: server_redraw_session_group(struct session *s)
60: {
61: struct session_group *sg;
62:
1.104 nicm 63: if ((sg = session_group_contains(s)) == NULL)
1.25 nicm 64: server_redraw_session(s);
65: else {
66: TAILQ_FOREACH(s, &sg->sessions, gentry)
67: server_redraw_session(s);
68: }
69: }
70:
71: void
1.1 nicm 72: server_status_session(struct session *s)
73: {
74: struct client *c;
75:
1.84 nicm 76: TAILQ_FOREACH(c, &clients, entry) {
1.1 nicm 77: if (c->session == s)
78: server_status_client(c);
79: }
80: }
81:
82: void
1.25 nicm 83: server_status_session_group(struct session *s)
84: {
85: struct session_group *sg;
86:
1.104 nicm 87: if ((sg = session_group_contains(s)) == NULL)
1.25 nicm 88: server_status_session(s);
89: else {
90: TAILQ_FOREACH(s, &sg->sessions, gentry)
91: server_status_session(s);
92: }
93: }
94:
95: void
1.1 nicm 96: server_redraw_window(struct window *w)
97: {
98: struct client *c;
99:
1.84 nicm 100: TAILQ_FOREACH(c, &clients, entry) {
101: if (c->session != NULL && c->session->curw->window == w)
1.1 nicm 102: server_redraw_client(c);
103: }
1.33 nicm 104: }
105:
106: void
107: server_redraw_window_borders(struct window *w)
108: {
109: struct client *c;
110:
1.84 nicm 111: TAILQ_FOREACH(c, &clients, entry) {
112: if (c->session != NULL && c->session->curw->window == w)
1.116 nicm 113: c->flags |= CLIENT_REDRAWBORDERS;
1.33 nicm 114: }
1.1 nicm 115: }
116:
117: void
118: server_status_window(struct window *w)
119: {
120: struct session *s;
121:
122: /*
123: * This is slightly different. We want to redraw the status line of any
1.65 nicm 124: * clients containing this window rather than anywhere it is the
1.1 nicm 125: * current window.
126: */
127:
1.47 nicm 128: RB_FOREACH(s, sessions, &sessions) {
1.83 nicm 129: if (session_has(s, w))
1.1 nicm 130: server_status_session(s);
131: }
132: }
133:
134: void
135: server_lock(void)
136: {
1.23 nicm 137: struct client *c;
1.17 nicm 138:
1.84 nicm 139: TAILQ_FOREACH(c, &clients, entry) {
140: if (c->session != NULL)
141: server_lock_client(c);
1.23 nicm 142: }
143: }
1.1 nicm 144:
1.23 nicm 145: void
146: server_lock_session(struct session *s)
147: {
148: struct client *c;
149:
1.84 nicm 150: TAILQ_FOREACH(c, &clients, entry) {
151: if (c->session == s)
152: server_lock_client(c);
1.31 nicm 153: }
1.23 nicm 154: }
1.1 nicm 155:
1.23 nicm 156: void
157: server_lock_client(struct client *c)
158: {
1.72 nicm 159: const char *cmd;
1.62 nicm 160:
1.64 nicm 161: if (c->flags & CLIENT_CONTROL)
1.62 nicm 162: return;
1.24 nicm 163:
164: if (c->flags & CLIENT_SUSPENDED)
165: return;
1.1 nicm 166:
1.91 nicm 167: cmd = options_get_string(c->session->options, "lock-command");
1.111 nicm 168: if (*cmd == '\0' || strlen(cmd) + 1 > MAX_IMSGSIZE - IMSG_HEADER_SIZE)
1.23 nicm 169: return;
1.31 nicm 170:
1.23 nicm 171: tty_stop_tty(&c->tty);
172: tty_raw(&c->tty, tty_term_string(c->tty.term, TTYC_SMCUP));
173: tty_raw(&c->tty, tty_term_string(c->tty.term, TTYC_CLEAR));
1.52 nicm 174: tty_raw(&c->tty, tty_term_string(c->tty.term, TTYC_E3));
1.23 nicm 175:
176: c->flags |= CLIENT_SUSPENDED;
1.110 nicm 177: proc_send(c->peer, MSG_LOCK, -1, cmd, strlen(cmd) + 1);
1.114 nicm 178: }
179:
180: void
181: server_kill_pane(struct window_pane *wp)
182: {
183: struct window *w = wp->window;
184:
185: if (window_count_panes(w) == 1) {
1.127 nicm 186: server_kill_window(w, 1);
1.114 nicm 187: recalculate_sizes();
188: } else {
189: server_unzoom_window(w);
1.126 nicm 190: server_client_remove_pane(wp);
1.114 nicm 191: layout_close_pane(wp);
192: window_remove_pane(w, wp);
193: server_redraw_window(w);
194: }
1.8 nicm 195: }
196:
197: void
1.127 nicm 198: server_kill_window(struct window *w, int renumber)
1.8 nicm 199: {
1.127 nicm 200: struct session *s, *s1;
201: struct winlink *wl;
1.48 nicm 202:
1.127 nicm 203: RB_FOREACH_SAFE(s, sessions, &sessions, s1) {
1.83 nicm 204: if (!session_has(s, w))
1.8 nicm 205: continue;
1.127 nicm 206:
1.78 nicm 207: server_unzoom_window(w);
1.34 nicm 208: while ((wl = winlink_find_by_window(&s->windows, w)) != NULL) {
209: if (session_detach(s, wl)) {
210: server_destroy_session_group(s);
211: break;
212: } else
213: server_redraw_session_group(s);
214: }
1.56 nicm 215:
1.127 nicm 216: if (renumber)
217: server_renumber_session(s);
1.8 nicm 218: }
1.69 nicm 219: recalculate_sizes();
1.21 nicm 220: }
221:
1.127 nicm 222: void
223: server_renumber_session(struct session *s)
224: {
225: struct session_group *sg;
226:
227: if (options_get_number(s->options, "renumber-windows")) {
228: if ((sg = session_group_contains(s)) != NULL) {
229: TAILQ_FOREACH(s, &sg->sessions, gentry)
230: session_renumber_windows(s);
231: } else
232: session_renumber_windows(s);
233: }
234: }
235:
236: void
237: server_renumber_all(void)
238: {
239: struct session *s;
240:
241: RB_FOREACH(s, sessions, &sessions)
242: server_renumber_session(s);
243: }
244:
1.21 nicm 245: int
1.25 nicm 246: server_link_window(struct session *src, struct winlink *srcwl,
1.76 nicm 247: struct session *dst, int dstidx, int killflag, int selectflag,
248: char **cause)
1.21 nicm 249: {
1.25 nicm 250: struct winlink *dstwl;
251: struct session_group *srcsg, *dstsg;
252:
1.104 nicm 253: srcsg = session_group_contains(src);
254: dstsg = session_group_contains(dst);
1.25 nicm 255: if (src != dst && srcsg != NULL && dstsg != NULL && srcsg == dstsg) {
256: xasprintf(cause, "sessions are grouped");
257: return (-1);
258: }
1.21 nicm 259:
260: dstwl = NULL;
261: if (dstidx != -1)
262: dstwl = winlink_find_by_index(&dst->windows, dstidx);
263: if (dstwl != NULL) {
1.44 nicm 264: if (dstwl->window == srcwl->window) {
265: xasprintf(cause, "same index: %d", dstidx);
1.41 nicm 266: return (-1);
1.44 nicm 267: }
1.21 nicm 268: if (killflag) {
269: /*
270: * Can't use session_detach as it will destroy session
271: * if this makes it empty.
272: */
1.102 nicm 273: notify_session_window("window-unlinked", dst,
274: dstwl->window);
1.37 nicm 275: dstwl->flags &= ~WINLINK_ALERTFLAGS;
1.21 nicm 276: winlink_stack_remove(&dst->lastw, dstwl);
277: winlink_remove(&dst->windows, dstwl);
278:
279: /* Force select/redraw if current. */
1.26 nicm 280: if (dstwl == dst->curw) {
1.21 nicm 281: selectflag = 1;
1.26 nicm 282: dst->curw = NULL;
283: }
1.21 nicm 284: }
285: }
286:
287: if (dstidx == -1)
1.91 nicm 288: dstidx = -1 - options_get_number(dst->options, "base-index");
1.21 nicm 289: dstwl = session_attach(dst, srcwl->window, dstidx, cause);
290: if (dstwl == NULL)
291: return (-1);
292:
1.25 nicm 293: if (selectflag)
1.21 nicm 294: session_select(dst, dstwl->idx);
1.25 nicm 295: server_redraw_session_group(dst);
1.21 nicm 296:
297: return (0);
298: }
299:
300: void
301: server_unlink_window(struct session *s, struct winlink *wl)
302: {
303: if (session_detach(s, wl))
1.25 nicm 304: server_destroy_session_group(s);
305: else
306: server_redraw_session_group(s);
1.29 nicm 307: }
308:
309: void
1.102 nicm 310: server_destroy_pane(struct window_pane *wp, int notify)
1.29 nicm 311: {
1.51 nicm 312: struct window *w = wp->window;
313: struct screen_write_ctx ctx;
314: struct grid_cell gc;
1.129 nicm 315: int remain_on_exit;
1.133 ! nicm 316: const char *s;
! 317: char *expanded;
! 318: u_int sx = screen_size_x(&wp->base);
! 319: u_int sy = screen_size_y(&wp->base);
1.29 nicm 320:
1.36 nicm 321: if (wp->fd != -1) {
1.53 nicm 322: bufferevent_free(wp->event);
1.118 nicm 323: wp->event = NULL;
1.36 nicm 324: close(wp->fd);
325: wp->fd = -1;
326: }
1.29 nicm 327:
1.129 nicm 328: remain_on_exit = options_get_number(wp->options, "remain-on-exit");
329: if (remain_on_exit != 0 && (~wp->flags & PANE_STATUSREADY))
330: return;
331: switch (remain_on_exit) {
332: case 0:
333: break;
334: case 2:
335: if (WIFEXITED(wp->status) && WEXITSTATUS(wp->status) == 0)
336: break;
337: /* FALLTHROUGH */
338: case 1:
1.112 nicm 339: if (wp->flags & PANE_STATUSDRAWN)
340: return;
341: wp->flags |= PANE_STATUSDRAWN;
342:
1.133 ! nicm 343: gettimeofday(&wp->dead_time, NULL);
1.102 nicm 344: if (notify)
345: notify_pane("pane-died", wp);
346:
1.133 ! nicm 347: s = options_get_string(wp->options, "remain-on-exit-format");
! 348: if (*s != '\0') {
! 349: screen_write_start_pane(&ctx, wp, &wp->base);
! 350: screen_write_scrollregion(&ctx, 0, sy - 1);
! 351: screen_write_cursormove(&ctx, 0, sy - 1, 0);
! 352: screen_write_linefeed(&ctx, 1, 8);
! 353: memcpy(&gc, &grid_default_cell, sizeof gc);
! 354:
! 355: expanded = format_single(NULL, s, NULL, NULL, NULL, wp);
! 356: format_draw(&ctx, &gc, sx, expanded, NULL, 0);
! 357: free(expanded);
! 358:
! 359: screen_write_stop(&ctx);
1.112 nicm 360: }
1.133 ! nicm 361: wp->base.mode &= ~MODE_CURSOR;
1.112 nicm 362:
1.51 nicm 363: wp->flags |= PANE_REDRAW;
1.29 nicm 364: return;
1.51 nicm 365: }
1.29 nicm 366:
1.102 nicm 367: if (notify)
368: notify_pane("pane-exited", wp);
369:
1.66 nicm 370: server_unzoom_window(w);
1.126 nicm 371: server_client_remove_pane(wp);
1.29 nicm 372: layout_close_pane(wp);
373: window_remove_pane(w, wp);
1.97 nicm 374:
1.29 nicm 375: if (TAILQ_EMPTY(&w->panes))
1.127 nicm 376: server_kill_window(w, 1);
1.29 nicm 377: else
378: server_redraw_window(w);
1.25 nicm 379: }
380:
1.101 nicm 381: static void
1.25 nicm 382: server_destroy_session_group(struct session *s)
383: {
384: struct session_group *sg;
1.71 nicm 385: struct session *s1;
1.25 nicm 386:
1.104 nicm 387: if ((sg = session_group_contains(s)) == NULL)
1.21 nicm 388: server_destroy_session(s);
1.25 nicm 389: else {
1.71 nicm 390: TAILQ_FOREACH_SAFE(s, &sg->sessions, gentry, s1) {
1.25 nicm 391: server_destroy_session(s);
1.120 nicm 392: session_destroy(s, 1, __func__);
1.71 nicm 393: }
1.25 nicm 394: }
1.19 nicm 395: }
396:
1.100 nicm 397: static struct session *
1.39 nicm 398: server_next_session(struct session *s)
399: {
1.130 nicm 400: struct session *s_loop, *s_out = NULL;
1.39 nicm 401:
1.47 nicm 402: RB_FOREACH(s_loop, sessions, &sessions) {
403: if (s_loop == s)
1.39 nicm 404: continue;
405: if (s_out == NULL ||
406: timercmp(&s_loop->activity_time, &s_out->activity_time, <))
407: s_out = s_loop;
408: }
409: return (s_out);
410: }
411:
1.130 nicm 412: static struct session *
413: server_next_detached_session(struct session *s)
414: {
415: struct session *s_loop, *s_out = NULL;
416:
417: RB_FOREACH(s_loop, sessions, &sessions) {
418: if (s_loop == s || s_loop->attached)
419: continue;
420: if (s_out == NULL ||
421: timercmp(&s_loop->activity_time, &s_out->activity_time, <))
422: s_out = s_loop;
423: }
424: return (s_out);
425: }
426:
1.19 nicm 427: void
428: server_destroy_session(struct session *s)
429: {
430: struct client *c;
1.39 nicm 431: struct session *s_new;
1.130 nicm 432: int detach_on_destroy;
1.31 nicm 433:
1.130 nicm 434: detach_on_destroy = options_get_number(s->options, "detach-on-destroy");
435: if (detach_on_destroy == 0)
1.39 nicm 436: s_new = server_next_session(s);
1.130 nicm 437: else if (detach_on_destroy == 2)
438: s_new = server_next_detached_session(s);
1.39 nicm 439: else
440: s_new = NULL;
1.84 nicm 441: TAILQ_FOREACH(c, &clients, entry) {
442: if (c->session != s)
1.19 nicm 443: continue;
1.132 nicm 444: server_client_set_session(c, s_new);
1.131 nicm 445: if (s_new == NULL)
1.40 nicm 446: c->flags |= CLIENT_EXIT;
1.19 nicm 447: }
1.38 nicm 448: recalculate_sizes();
1.42 nicm 449: }
450:
451: void
1.75 nicm 452: server_check_unattached(void)
1.42 nicm 453: {
454: struct session *s;
455:
456: /*
457: * If any sessions are no longer attached and have destroy-unattached
458: * set, collect them.
459: */
1.47 nicm 460: RB_FOREACH(s, sessions, &sessions) {
1.115 nicm 461: if (s->attached != 0)
1.42 nicm 462: continue;
1.91 nicm 463: if (options_get_number (s->options, "destroy-unattached"))
1.120 nicm 464: session_destroy(s, 1, __func__);
1.42 nicm 465: }
1.66 nicm 466: }
467:
468: void
469: server_unzoom_window(struct window *w)
470: {
1.113 nicm 471: if (window_unzoom(w) == 0)
1.80 nicm 472: server_redraw_window(w);
1.1 nicm 473: }
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