Annotation of src/usr.bin/tmux/server-fn.c, Revision 1.61
1.61 ! nicm 1: /* $OpenBSD: server-fn.c,v 1.60 2012/07/10 11:53:01 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:
42: idx = s->idx;
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
197: * clients containing this window rather than any where it is the
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;
1.24 nicm 241:
242: if (c->flags & CLIENT_SUSPENDED)
243: return;
1.1 nicm 244:
1.23 nicm 245: cmd = options_get_string(&c->session->options, "lock-command");
246: cmdlen = strlcpy(lockdata.cmd, cmd, sizeof lockdata.cmd);
247: if (cmdlen >= sizeof lockdata.cmd)
248: return;
1.31 nicm 249:
1.23 nicm 250: tty_stop_tty(&c->tty);
251: tty_raw(&c->tty, tty_term_string(c->tty.term, TTYC_SMCUP));
252: tty_raw(&c->tty, tty_term_string(c->tty.term, TTYC_CLEAR));
1.52 nicm 253: tty_raw(&c->tty, tty_term_string(c->tty.term, TTYC_E3));
1.23 nicm 254:
255: c->flags |= CLIENT_SUSPENDED;
256: server_write_client(c, MSG_LOCK, &lockdata, sizeof lockdata);
1.8 nicm 257: }
258:
259: void
260: server_kill_window(struct window *w)
261: {
1.48 nicm 262: struct session *s, *next_s;
1.8 nicm 263: struct winlink *wl;
1.31 nicm 264:
1.48 nicm 265: next_s = RB_MIN(sessions, &sessions);
266: while (next_s != NULL) {
267: s = next_s;
268: next_s = RB_NEXT(sessions, &sessions, s);
269:
1.47 nicm 270: if (session_has(s, w) == NULL)
1.8 nicm 271: continue;
1.34 nicm 272: while ((wl = winlink_find_by_window(&s->windows, w)) != NULL) {
273: if (session_detach(s, wl)) {
274: server_destroy_session_group(s);
275: break;
276: } else
277: server_redraw_session_group(s);
278: }
1.56 nicm 279:
280: if (options_get_number(&s->options, "renumber-windows"))
281: session_renumber_windows(s);
1.8 nicm 282: }
1.21 nicm 283: }
284:
285: int
1.25 nicm 286: server_link_window(struct session *src, struct winlink *srcwl,
287: struct session *dst, int dstidx, int killflag, int selectflag, char **cause)
1.21 nicm 288: {
1.25 nicm 289: struct winlink *dstwl;
290: struct session_group *srcsg, *dstsg;
291:
292: srcsg = session_group_find(src);
293: dstsg = session_group_find(dst);
294: if (src != dst && srcsg != NULL && dstsg != NULL && srcsg == dstsg) {
295: xasprintf(cause, "sessions are grouped");
296: return (-1);
297: }
1.21 nicm 298:
299: dstwl = NULL;
300: if (dstidx != -1)
301: dstwl = winlink_find_by_index(&dst->windows, dstidx);
302: if (dstwl != NULL) {
1.44 nicm 303: if (dstwl->window == srcwl->window) {
304: xasprintf(cause, "same index: %d", dstidx);
1.41 nicm 305: return (-1);
1.44 nicm 306: }
1.21 nicm 307: if (killflag) {
308: /*
309: * Can't use session_detach as it will destroy session
310: * if this makes it empty.
311: */
1.55 nicm 312: notify_window_unlinked(dst, dstwl->window);
1.37 nicm 313: dstwl->flags &= ~WINLINK_ALERTFLAGS;
1.21 nicm 314: winlink_stack_remove(&dst->lastw, dstwl);
315: winlink_remove(&dst->windows, dstwl);
316:
317: /* Force select/redraw if current. */
1.26 nicm 318: if (dstwl == dst->curw) {
1.21 nicm 319: selectflag = 1;
1.26 nicm 320: dst->curw = NULL;
321: }
1.21 nicm 322: }
323: }
324:
325: if (dstidx == -1)
326: dstidx = -1 - options_get_number(&dst->options, "base-index");
327: dstwl = session_attach(dst, srcwl->window, dstidx, cause);
328: if (dstwl == NULL)
329: return (-1);
330:
1.25 nicm 331: if (selectflag)
1.21 nicm 332: session_select(dst, dstwl->idx);
1.25 nicm 333: server_redraw_session_group(dst);
1.21 nicm 334:
335: return (0);
336: }
337:
338: void
339: server_unlink_window(struct session *s, struct winlink *wl)
340: {
341: if (session_detach(s, wl))
1.25 nicm 342: server_destroy_session_group(s);
343: else
344: server_redraw_session_group(s);
1.29 nicm 345: }
346:
347: void
348: server_destroy_pane(struct window_pane *wp)
349: {
1.51 nicm 350: struct window *w = wp->window;
351: int old_fd;
352: struct screen_write_ctx ctx;
353: struct grid_cell gc;
1.29 nicm 354:
1.51 nicm 355: old_fd = wp->fd;
1.36 nicm 356: if (wp->fd != -1) {
1.53 nicm 357: bufferevent_free(wp->event);
1.36 nicm 358: close(wp->fd);
359: wp->fd = -1;
360: }
1.29 nicm 361:
1.51 nicm 362: if (options_get_number(&w->options, "remain-on-exit")) {
363: if (old_fd == -1)
364: return;
365: screen_write_start(&ctx, wp, &wp->base);
366: screen_write_scrollregion(&ctx, 0, screen_size_y(ctx.s) - 1);
367: screen_write_cursormove(&ctx, 0, screen_size_y(ctx.s) - 1);
368: screen_write_linefeed(&ctx, 1);
369: memcpy(&gc, &grid_default_cell, sizeof gc);
370: gc.attr |= GRID_ATTR_BRIGHT;
371: screen_write_puts(&ctx, &gc, "Pane is dead");
372: screen_write_stop(&ctx);
373: wp->flags |= PANE_REDRAW;
1.29 nicm 374: return;
1.51 nicm 375: }
1.29 nicm 376:
377: layout_close_pane(wp);
378: window_remove_pane(w, wp);
379:
380: if (TAILQ_EMPTY(&w->panes))
381: server_kill_window(w);
382: else
383: server_redraw_window(w);
1.25 nicm 384: }
385:
386: void
387: server_destroy_session_group(struct session *s)
388: {
389: struct session_group *sg;
390:
391: if ((sg = session_group_find(s)) == NULL)
1.21 nicm 392: server_destroy_session(s);
1.25 nicm 393: else {
394: TAILQ_FOREACH(s, &sg->sessions, gentry)
395: server_destroy_session(s);
396: TAILQ_REMOVE(&session_groups, sg, entry);
1.60 nicm 397: free(sg);
1.25 nicm 398: }
1.19 nicm 399: }
400:
1.39 nicm 401: struct session *
402: server_next_session(struct session *s)
403: {
404: struct session *s_loop, *s_out;
405:
406: s_out = NULL;
1.47 nicm 407: RB_FOREACH(s_loop, sessions, &sessions) {
408: if (s_loop == s)
1.39 nicm 409: continue;
410: if (s_out == NULL ||
411: timercmp(&s_loop->activity_time, &s_out->activity_time, <))
412: s_out = s_loop;
413: }
414: return (s_out);
415: }
416:
1.19 nicm 417: void
418: server_destroy_session(struct session *s)
419: {
420: struct client *c;
1.39 nicm 421: struct session *s_new;
1.19 nicm 422: u_int i;
1.31 nicm 423:
1.39 nicm 424: if (!options_get_number(&s->options, "detach-on-destroy"))
425: s_new = server_next_session(s);
426: else
427: s_new = NULL;
428:
1.19 nicm 429: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
430: c = ARRAY_ITEM(&clients, i);
431: if (c == NULL || c->session != s)
432: continue;
1.39 nicm 433: if (s_new == NULL) {
434: c->session = NULL;
1.40 nicm 435: c->flags |= CLIENT_EXIT;
1.39 nicm 436: } else {
1.46 nicm 437: c->last_session = NULL;
1.39 nicm 438: c->session = s_new;
1.55 nicm 439: notify_attached_session_changed(c);
1.49 nicm 440: session_update_activity(s_new);
1.39 nicm 441: server_redraw_client(c);
442: }
1.19 nicm 443: }
1.38 nicm 444: recalculate_sizes();
1.42 nicm 445: }
446:
447: void
448: server_check_unattached (void)
449: {
450: struct session *s;
451:
452: /*
453: * If any sessions are no longer attached and have destroy-unattached
454: * set, collect them.
455: */
1.47 nicm 456: RB_FOREACH(s, sessions, &sessions) {
457: if (!(s->flags & SESSION_UNATTACHED))
1.42 nicm 458: continue;
459: if (options_get_number (&s->options, "destroy-unattached"))
460: session_destroy(s);
461: }
1.15 nicm 462: }
463:
464: void
465: server_set_identify(struct client *c)
466: {
467: struct timeval tv;
468: int delay;
469:
470: delay = options_get_number(&c->session->options, "display-panes-time");
471: tv.tv_sec = delay / 1000;
472: tv.tv_usec = (delay % 1000) * 1000L;
1.31 nicm 473:
1.54 nicm 474: if (event_initialized (&c->identify_timer))
475: evtimer_del(&c->identify_timer);
1.28 nicm 476: evtimer_set(&c->identify_timer, server_callback_identify, c);
477: evtimer_add(&c->identify_timer, &tv);
1.15 nicm 478:
479: c->flags |= CLIENT_IDENTIFY;
480: c->tty.flags |= (TTY_FREEZE|TTY_NOCURSOR);
481: server_redraw_client(c);
482: }
483:
484: void
485: server_clear_identify(struct client *c)
486: {
487: if (c->flags & CLIENT_IDENTIFY) {
488: c->flags &= ~CLIENT_IDENTIFY;
489: c->tty.flags &= ~(TTY_FREEZE|TTY_NOCURSOR);
490: server_redraw_client(c);
491: }
1.28 nicm 492: }
493:
1.30 nicm 494: /* ARGSUSED */
1.28 nicm 495: void
496: server_callback_identify(unused int fd, unused short events, void *data)
497: {
498: struct client *c = data;
499:
500: server_clear_identify(c);
1.27 nicm 501: }
502:
503: void
504: server_update_event(struct client *c)
505: {
506: short events;
507:
508: events = 0;
509: if (!(c->flags & CLIENT_BAD))
510: events |= EV_READ;
511: if (c->ibuf.w.queued > 0)
512: events |= EV_WRITE;
1.54 nicm 513: if (event_initialized(&c->event))
514: event_del(&c->event);
1.27 nicm 515: event_set(&c->event, c->ibuf.fd, events, server_client_callback, c);
1.31 nicm 516: event_add(&c->event, NULL);
1.57 nicm 517: }
518:
519: /* Push stdout to client if possible. */
520: void
521: server_push_stdout(struct client *c)
522: {
523: struct msg_stdout_data data;
524: size_t size;
525:
526: size = EVBUFFER_LENGTH(c->stdout_data);
527: if (size == 0)
528: return;
529: if (size > sizeof data.data)
530: size = sizeof data.data;
531:
532: memcpy(data.data, EVBUFFER_DATA(c->stdout_data), size);
533: data.size = size;
534:
535: if (server_write_client(c, MSG_STDOUT, &data, sizeof data) == 0)
536: evbuffer_drain(c->stdout_data, size);
537: }
538:
539: /* Push stderr to client if possible. */
540: void
541: server_push_stderr(struct client *c)
542: {
543: struct msg_stderr_data data;
544: size_t size;
545:
546: size = EVBUFFER_LENGTH(c->stderr_data);
547: if (size == 0)
548: return;
549: if (size > sizeof data.data)
550: size = sizeof data.data;
551:
552: memcpy(data.data, EVBUFFER_DATA(c->stderr_data), size);
553: data.size = size;
554:
555: if (server_write_client(c, MSG_STDERR, &data, sizeof data) == 0)
556: evbuffer_drain(c->stderr_data, size);
557: }
558:
559: /* Set stdin callback. */
560: int
561: server_set_stdin_callback(struct client *c, void (*cb)(struct client *, int,
562: void *), void *cb_data, char **cause)
563: {
564: if (c == NULL) {
565: *cause = xstrdup("no client with stdin");
566: return (-1);
567: }
568: if (c->flags & CLIENT_TERMINAL) {
569: *cause = xstrdup("stdin is a tty");
570: return (-1);
571: }
572: if (c->stdin_callback != NULL) {
573: *cause = xstrdup("stdin in use");
574: return (-1);
575: }
576:
577: c->stdin_callback_data = cb_data;
578: c->stdin_callback = cb;
579:
580: c->references++;
581:
582: if (c->stdin_closed)
583: c->stdin_callback (c, 1, c->stdin_callback_data);
1.61 ! nicm 584:
! 585: server_write_client(c, MSG_STDIN, NULL, 0);
! 586:
1.57 nicm 587: return (0);
1.1 nicm 588: }
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