Annotation of src/usr.bin/tmux/server-fn.c, Revision 1.69
1.69 ! nicm 1: /* $OpenBSD: server-fn.c,v 1.68 2013/03/25 11:36:59 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:
1.60 nicm 21: #include <stdlib.h>
1.1 nicm 22: #include <string.h>
1.5 nicm 23: #include <time.h>
1.1 nicm 24: #include <unistd.h>
25:
26: #include "tmux.h"
27:
1.39 nicm 28: struct session *server_next_session(struct session *);
29: void server_callback_identify(int, short, void *);
1.28 nicm 30:
1.13 nicm 31: void
32: server_fill_environ(struct session *s, struct environ *env)
1.1 nicm 33: {
1.50 nicm 34: char var[MAXPATHLEN], *term;
35: u_int idx;
36: long pid;
37:
38: if (s != NULL) {
39: term = options_get_string(&s->options, "default-terminal");
40: environ_set(env, "TERM", term);
41:
1.67 nicm 42: idx = s->id;
1.50 nicm 43: } else
44: idx = -1;
45: pid = getpid();
46: xsnprintf(var, sizeof var, "%s,%ld,%d", socket_path, pid, idx);
47: environ_set(env, "TMUX", var);
1.58 nicm 48: }
49:
50: void
51: server_write_ready(struct client *c)
52: {
1.59 nicm 53: if (c->flags & CLIENT_CONTROL)
54: return;
1.58 nicm 55: server_write_client(c, MSG_READY, NULL, 0);
1.10 nicm 56: }
57:
1.57 nicm 58: int
1.1 nicm 59: server_write_client(
1.11 nicm 60: struct client *c, enum msgtype type, const void *buf, size_t len)
1.1 nicm 61: {
1.14 nicm 62: struct imsgbuf *ibuf = &c->ibuf;
1.57 nicm 63: int error;
1.1 nicm 64:
1.12 nicm 65: if (c->flags & CLIENT_BAD)
1.57 nicm 66: return (-1);
1.14 nicm 67: log_debug("writing %d to client %d", type, c->ibuf.fd);
1.57 nicm 68: error = imsg_compose(ibuf, type, PROTOCOL_VERSION, -1, -1,
69: (void *) buf, len);
70: if (error == 1)
71: server_update_event(c);
72: return (error == 1 ? 0 : -1);
1.1 nicm 73: }
74:
75: void
76: server_write_session(
1.11 nicm 77: struct session *s, enum msgtype type, const void *buf, size_t len)
1.1 nicm 78: {
79: struct client *c;
80: u_int i;
81:
82: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
83: c = ARRAY_ITEM(&clients, i);
84: if (c == NULL || c->session == NULL)
85: continue;
86: if (c->session == s)
87: server_write_client(c, type, buf, len);
88: }
89: }
90:
91: void
92: server_redraw_client(struct client *c)
93: {
94: c->flags |= CLIENT_REDRAW;
95: }
96:
97: void
98: server_status_client(struct client *c)
99: {
100: c->flags |= CLIENT_STATUS;
101: }
102:
103: void
104: server_redraw_session(struct session *s)
105: {
106: struct client *c;
107: u_int i;
108:
109: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
110: c = ARRAY_ITEM(&clients, i);
111: if (c == NULL || c->session == NULL)
112: continue;
113: if (c->session == s)
114: server_redraw_client(c);
115: }
116: }
117:
118: void
1.25 nicm 119: server_redraw_session_group(struct session *s)
120: {
121: struct session_group *sg;
122:
123: if ((sg = session_group_find(s)) == NULL)
124: server_redraw_session(s);
125: else {
126: TAILQ_FOREACH(s, &sg->sessions, gentry)
127: server_redraw_session(s);
128: }
129: }
130:
131: void
1.1 nicm 132: server_status_session(struct session *s)
133: {
134: struct client *c;
135: u_int i;
136:
137: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
138: c = ARRAY_ITEM(&clients, i);
139: if (c == NULL || c->session == NULL)
140: continue;
141: if (c->session == s)
142: server_status_client(c);
143: }
144: }
145:
146: void
1.25 nicm 147: server_status_session_group(struct session *s)
148: {
149: struct session_group *sg;
150:
151: if ((sg = session_group_find(s)) == NULL)
152: server_status_session(s);
153: else {
154: TAILQ_FOREACH(s, &sg->sessions, gentry)
155: server_status_session(s);
156: }
157: }
158:
159: void
1.1 nicm 160: server_redraw_window(struct window *w)
161: {
162: struct client *c;
163: u_int i;
164:
165: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
166: c = ARRAY_ITEM(&clients, i);
167: if (c == NULL || c->session == NULL)
168: continue;
169: if (c->session->curw->window == w)
170: server_redraw_client(c);
171: }
172: w->flags |= WINDOW_REDRAW;
1.33 nicm 173: }
174:
175: void
176: server_redraw_window_borders(struct window *w)
177: {
178: struct client *c;
179: u_int i;
180:
181: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
182: c = ARRAY_ITEM(&clients, i);
183: if (c == NULL || c->session == NULL)
184: continue;
185: if (c->session->curw->window == w)
186: c->flags |= CLIENT_BORDERS;
187: }
1.1 nicm 188: }
189:
190: void
191: server_status_window(struct window *w)
192: {
193: struct session *s;
194:
195: /*
196: * This is slightly different. We want to redraw the status line of any
1.65 nicm 197: * clients containing this window rather than anywhere it is the
1.1 nicm 198: * current window.
199: */
200:
1.47 nicm 201: RB_FOREACH(s, sessions, &sessions) {
202: if (session_has(s, w) != NULL)
1.1 nicm 203: server_status_session(s);
204: }
205: }
206:
207: void
208: server_lock(void)
209: {
1.23 nicm 210: struct client *c;
211: u_int i;
1.17 nicm 212:
1.1 nicm 213: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
214: c = ARRAY_ITEM(&clients, i);
215: if (c == NULL || c->session == NULL)
216: continue;
1.23 nicm 217: server_lock_client(c);
218: }
219: }
1.1 nicm 220:
1.23 nicm 221: void
222: server_lock_session(struct session *s)
223: {
224: struct client *c;
225: u_int i;
226:
227: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
228: c = ARRAY_ITEM(&clients, i);
229: if (c == NULL || c->session == NULL || c->session != s)
230: continue;
231: server_lock_client(c);
1.31 nicm 232: }
1.23 nicm 233: }
1.1 nicm 234:
1.23 nicm 235: void
236: server_lock_client(struct client *c)
237: {
238: const char *cmd;
239: size_t cmdlen;
240: struct msg_lock_data lockdata;
1.62 nicm 241:
1.64 nicm 242: if (c->flags & CLIENT_CONTROL)
1.62 nicm 243: return;
1.24 nicm 244:
245: if (c->flags & CLIENT_SUSPENDED)
246: return;
1.1 nicm 247:
1.23 nicm 248: cmd = options_get_string(&c->session->options, "lock-command");
249: cmdlen = strlcpy(lockdata.cmd, cmd, sizeof lockdata.cmd);
250: if (cmdlen >= sizeof lockdata.cmd)
251: return;
1.31 nicm 252:
1.23 nicm 253: tty_stop_tty(&c->tty);
254: tty_raw(&c->tty, tty_term_string(c->tty.term, TTYC_SMCUP));
255: tty_raw(&c->tty, tty_term_string(c->tty.term, TTYC_CLEAR));
1.52 nicm 256: tty_raw(&c->tty, tty_term_string(c->tty.term, TTYC_E3));
1.23 nicm 257:
258: c->flags |= CLIENT_SUSPENDED;
259: server_write_client(c, MSG_LOCK, &lockdata, sizeof lockdata);
1.8 nicm 260: }
261:
262: void
263: server_kill_window(struct window *w)
264: {
1.48 nicm 265: struct session *s, *next_s;
1.8 nicm 266: struct winlink *wl;
1.31 nicm 267:
1.48 nicm 268: next_s = RB_MIN(sessions, &sessions);
269: while (next_s != NULL) {
270: s = next_s;
271: next_s = RB_NEXT(sessions, &sessions, s);
272:
1.47 nicm 273: if (session_has(s, w) == NULL)
1.8 nicm 274: continue;
1.34 nicm 275: while ((wl = winlink_find_by_window(&s->windows, w)) != NULL) {
276: if (session_detach(s, wl)) {
277: server_destroy_session_group(s);
278: break;
279: } else
280: server_redraw_session_group(s);
281: }
1.56 nicm 282:
283: if (options_get_number(&s->options, "renumber-windows"))
284: session_renumber_windows(s);
1.8 nicm 285: }
1.69 ! nicm 286: recalculate_sizes();
1.21 nicm 287: }
288:
289: int
1.25 nicm 290: server_link_window(struct session *src, struct winlink *srcwl,
291: struct session *dst, int dstidx, int killflag, int selectflag, char **cause)
1.21 nicm 292: {
1.25 nicm 293: struct winlink *dstwl;
294: struct session_group *srcsg, *dstsg;
295:
296: srcsg = session_group_find(src);
297: dstsg = session_group_find(dst);
298: if (src != dst && srcsg != NULL && dstsg != NULL && srcsg == dstsg) {
299: xasprintf(cause, "sessions are grouped");
300: return (-1);
301: }
1.21 nicm 302:
303: dstwl = NULL;
304: if (dstidx != -1)
305: dstwl = winlink_find_by_index(&dst->windows, dstidx);
306: if (dstwl != NULL) {
1.44 nicm 307: if (dstwl->window == srcwl->window) {
308: xasprintf(cause, "same index: %d", dstidx);
1.41 nicm 309: return (-1);
1.44 nicm 310: }
1.21 nicm 311: if (killflag) {
312: /*
313: * Can't use session_detach as it will destroy session
314: * if this makes it empty.
315: */
1.55 nicm 316: notify_window_unlinked(dst, dstwl->window);
1.37 nicm 317: dstwl->flags &= ~WINLINK_ALERTFLAGS;
1.21 nicm 318: winlink_stack_remove(&dst->lastw, dstwl);
319: winlink_remove(&dst->windows, dstwl);
320:
321: /* Force select/redraw if current. */
1.26 nicm 322: if (dstwl == dst->curw) {
1.21 nicm 323: selectflag = 1;
1.26 nicm 324: dst->curw = NULL;
325: }
1.21 nicm 326: }
327: }
328:
329: if (dstidx == -1)
330: dstidx = -1 - options_get_number(&dst->options, "base-index");
331: dstwl = session_attach(dst, srcwl->window, dstidx, cause);
332: if (dstwl == NULL)
333: return (-1);
334:
1.25 nicm 335: if (selectflag)
1.21 nicm 336: session_select(dst, dstwl->idx);
1.25 nicm 337: server_redraw_session_group(dst);
1.21 nicm 338:
339: return (0);
340: }
341:
342: void
343: server_unlink_window(struct session *s, struct winlink *wl)
344: {
345: if (session_detach(s, wl))
1.25 nicm 346: server_destroy_session_group(s);
347: else
348: server_redraw_session_group(s);
1.29 nicm 349: }
350:
351: void
352: server_destroy_pane(struct window_pane *wp)
353: {
1.51 nicm 354: struct window *w = wp->window;
355: int old_fd;
356: struct screen_write_ctx ctx;
357: struct grid_cell gc;
1.29 nicm 358:
1.51 nicm 359: old_fd = wp->fd;
1.36 nicm 360: if (wp->fd != -1) {
1.53 nicm 361: bufferevent_free(wp->event);
1.36 nicm 362: close(wp->fd);
363: wp->fd = -1;
364: }
1.29 nicm 365:
1.51 nicm 366: if (options_get_number(&w->options, "remain-on-exit")) {
367: if (old_fd == -1)
368: return;
369: screen_write_start(&ctx, wp, &wp->base);
370: screen_write_scrollregion(&ctx, 0, screen_size_y(ctx.s) - 1);
371: screen_write_cursormove(&ctx, 0, screen_size_y(ctx.s) - 1);
372: screen_write_linefeed(&ctx, 1);
373: memcpy(&gc, &grid_default_cell, sizeof gc);
374: gc.attr |= GRID_ATTR_BRIGHT;
375: screen_write_puts(&ctx, &gc, "Pane is dead");
376: screen_write_stop(&ctx);
377: wp->flags |= PANE_REDRAW;
1.29 nicm 378: return;
1.51 nicm 379: }
1.29 nicm 380:
1.66 nicm 381: server_unzoom_window(w);
1.29 nicm 382: layout_close_pane(wp);
383: window_remove_pane(w, wp);
384:
385: if (TAILQ_EMPTY(&w->panes))
386: server_kill_window(w);
387: else
388: server_redraw_window(w);
1.25 nicm 389: }
390:
391: void
392: server_destroy_session_group(struct session *s)
393: {
394: struct session_group *sg;
395:
396: if ((sg = session_group_find(s)) == NULL)
1.21 nicm 397: server_destroy_session(s);
1.25 nicm 398: else {
399: TAILQ_FOREACH(s, &sg->sessions, gentry)
400: server_destroy_session(s);
401: TAILQ_REMOVE(&session_groups, sg, entry);
1.60 nicm 402: free(sg);
1.25 nicm 403: }
1.19 nicm 404: }
405:
1.39 nicm 406: struct session *
407: server_next_session(struct session *s)
408: {
409: struct session *s_loop, *s_out;
410:
411: s_out = NULL;
1.47 nicm 412: RB_FOREACH(s_loop, sessions, &sessions) {
413: if (s_loop == s)
1.39 nicm 414: continue;
415: if (s_out == NULL ||
416: timercmp(&s_loop->activity_time, &s_out->activity_time, <))
417: s_out = s_loop;
418: }
419: return (s_out);
420: }
421:
1.19 nicm 422: void
423: server_destroy_session(struct session *s)
424: {
425: struct client *c;
1.39 nicm 426: struct session *s_new;
1.19 nicm 427: u_int i;
1.31 nicm 428:
1.39 nicm 429: if (!options_get_number(&s->options, "detach-on-destroy"))
430: s_new = server_next_session(s);
431: else
432: s_new = NULL;
433:
1.19 nicm 434: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
435: c = ARRAY_ITEM(&clients, i);
436: if (c == NULL || c->session != s)
437: continue;
1.39 nicm 438: if (s_new == NULL) {
439: c->session = NULL;
1.40 nicm 440: c->flags |= CLIENT_EXIT;
1.39 nicm 441: } else {
1.46 nicm 442: c->last_session = NULL;
1.39 nicm 443: c->session = s_new;
1.55 nicm 444: notify_attached_session_changed(c);
1.49 nicm 445: session_update_activity(s_new);
1.39 nicm 446: server_redraw_client(c);
447: }
1.19 nicm 448: }
1.38 nicm 449: recalculate_sizes();
1.42 nicm 450: }
451:
452: void
453: server_check_unattached (void)
454: {
455: struct session *s;
456:
457: /*
458: * If any sessions are no longer attached and have destroy-unattached
459: * set, collect them.
460: */
1.47 nicm 461: RB_FOREACH(s, sessions, &sessions) {
462: if (!(s->flags & SESSION_UNATTACHED))
1.42 nicm 463: continue;
464: if (options_get_number (&s->options, "destroy-unattached"))
465: session_destroy(s);
466: }
1.15 nicm 467: }
468:
469: void
470: server_set_identify(struct client *c)
471: {
472: struct timeval tv;
473: int delay;
474:
475: delay = options_get_number(&c->session->options, "display-panes-time");
476: tv.tv_sec = delay / 1000;
477: tv.tv_usec = (delay % 1000) * 1000L;
1.31 nicm 478:
1.54 nicm 479: if (event_initialized (&c->identify_timer))
480: evtimer_del(&c->identify_timer);
1.28 nicm 481: evtimer_set(&c->identify_timer, server_callback_identify, c);
482: evtimer_add(&c->identify_timer, &tv);
1.15 nicm 483:
484: c->flags |= CLIENT_IDENTIFY;
485: c->tty.flags |= (TTY_FREEZE|TTY_NOCURSOR);
486: server_redraw_client(c);
487: }
488:
489: void
490: server_clear_identify(struct client *c)
491: {
492: if (c->flags & CLIENT_IDENTIFY) {
493: c->flags &= ~CLIENT_IDENTIFY;
494: c->tty.flags &= ~(TTY_FREEZE|TTY_NOCURSOR);
495: server_redraw_client(c);
496: }
1.28 nicm 497: }
498:
499: void
500: server_callback_identify(unused int fd, unused short events, void *data)
501: {
502: struct client *c = data;
503:
504: server_clear_identify(c);
1.27 nicm 505: }
506:
507: void
508: server_update_event(struct client *c)
509: {
510: short events;
511:
512: events = 0;
513: if (!(c->flags & CLIENT_BAD))
514: events |= EV_READ;
515: if (c->ibuf.w.queued > 0)
516: events |= EV_WRITE;
1.54 nicm 517: if (event_initialized(&c->event))
518: event_del(&c->event);
1.27 nicm 519: event_set(&c->event, c->ibuf.fd, events, server_client_callback, c);
1.31 nicm 520: event_add(&c->event, NULL);
1.57 nicm 521: }
522:
523: /* Push stdout to client if possible. */
524: void
525: server_push_stdout(struct client *c)
526: {
527: struct msg_stdout_data data;
528: size_t size;
529:
530: size = EVBUFFER_LENGTH(c->stdout_data);
531: if (size == 0)
532: return;
533: if (size > sizeof data.data)
534: size = sizeof data.data;
535:
536: memcpy(data.data, EVBUFFER_DATA(c->stdout_data), size);
537: data.size = size;
538:
539: if (server_write_client(c, MSG_STDOUT, &data, sizeof data) == 0)
540: evbuffer_drain(c->stdout_data, size);
541: }
542:
543: /* Push stderr to client if possible. */
544: void
545: server_push_stderr(struct client *c)
546: {
547: struct msg_stderr_data data;
548: size_t size;
549:
1.68 nicm 550: if (c->stderr_data == c->stdout_data) {
551: server_push_stdout(c);
552: return;
553: }
1.57 nicm 554: size = EVBUFFER_LENGTH(c->stderr_data);
555: if (size == 0)
556: return;
557: if (size > sizeof data.data)
558: size = sizeof data.data;
559:
560: memcpy(data.data, EVBUFFER_DATA(c->stderr_data), size);
561: data.size = size;
562:
563: if (server_write_client(c, MSG_STDERR, &data, sizeof data) == 0)
564: evbuffer_drain(c->stderr_data, size);
565: }
566:
567: /* Set stdin callback. */
568: int
569: server_set_stdin_callback(struct client *c, void (*cb)(struct client *, int,
570: void *), void *cb_data, char **cause)
571: {
1.65 nicm 572: if (c == NULL || c->session != NULL) {
1.57 nicm 573: *cause = xstrdup("no client with stdin");
574: return (-1);
575: }
576: if (c->flags & CLIENT_TERMINAL) {
577: *cause = xstrdup("stdin is a tty");
578: return (-1);
579: }
580: if (c->stdin_callback != NULL) {
581: *cause = xstrdup("stdin in use");
582: return (-1);
583: }
584:
585: c->stdin_callback_data = cb_data;
586: c->stdin_callback = cb;
587:
588: c->references++;
589:
590: if (c->stdin_closed)
591: c->stdin_callback (c, 1, c->stdin_callback_data);
1.61 nicm 592:
593: server_write_client(c, MSG_STDIN, NULL, 0);
594:
1.57 nicm 595: return (0);
1.66 nicm 596: }
597:
598: void
599: server_unzoom_window(struct window *w)
600: {
601: window_unzoom(w);
602: server_redraw_window(w);
603: server_status_window(w);
1.1 nicm 604: }
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