Annotation of src/usr.bin/tmux/server-client.c, Revision 1.72
1.72 ! nicm 1: /* $OpenBSD: server-client.c,v 1.71 2012/04/11 06:16:14 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2009 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:
1.12 nicm 21: #include <event.h>
1.1 nicm 22: #include <fcntl.h>
23: #include <string.h>
1.4 nicm 24: #include <time.h>
1.1 nicm 25: #include <paths.h>
26: #include <unistd.h>
27:
28: #include "tmux.h"
29:
1.66 nicm 30: void server_client_check_mouse(struct client *c,
31: struct window_pane *wp, struct mouse_event *mouse);
1.18 nicm 32: void server_client_handle_key(int, struct mouse_event *, void *);
1.17 nicm 33: void server_client_repeat_timer(int, short, void *);
1.36 nicm 34: void server_client_check_exit(struct client *);
1.1 nicm 35: void server_client_check_redraw(struct client *);
36: void server_client_set_title(struct client *);
1.18 nicm 37: void server_client_reset_state(struct client *);
1.36 nicm 38: void server_client_in_callback(struct bufferevent *, short, void *);
39: void server_client_out_callback(struct bufferevent *, short, void *);
40: void server_client_err_callback(struct bufferevent *, short, void *);
1.1 nicm 41:
42: int server_client_msg_dispatch(struct client *);
43: void server_client_msg_command(struct client *, struct msg_command_data *);
44: void server_client_msg_identify(
1.25 nicm 45: struct client *, struct msg_identify_data *, int);
1.1 nicm 46: void server_client_msg_shell(struct client *);
47:
48: void printflike2 server_client_msg_error(struct cmd_ctx *, const char *, ...);
49: void printflike2 server_client_msg_print(struct cmd_ctx *, const char *, ...);
50: void printflike2 server_client_msg_info(struct cmd_ctx *, const char *, ...);
51:
52: /* Create a new client. */
53: void
54: server_client_create(int fd)
55: {
56: struct client *c;
57: u_int i;
58:
1.49 nicm 59: setblocking(fd, 0);
1.1 nicm 60:
61: c = xcalloc(1, sizeof *c);
62: c->references = 0;
63: imsg_init(&c->ibuf, fd);
1.14 nicm 64: server_update_event(c);
1.25 nicm 65:
1.10 nicm 66: if (gettimeofday(&c->creation_time, NULL) != 0)
1.1 nicm 67: fatal("gettimeofday failed");
1.11 nicm 68: memcpy(&c->activity_time, &c->creation_time, sizeof c->activity_time);
1.1 nicm 69:
1.36 nicm 70: c->stdin_event = NULL;
71: c->stdout_event = NULL;
72: c->stderr_event = NULL;
1.33 nicm 73:
1.1 nicm 74: c->tty.fd = -1;
75: c->title = NULL;
76:
77: c->session = NULL;
1.45 nicm 78: c->last_session = NULL;
1.1 nicm 79: c->tty.sx = 80;
80: c->tty.sy = 24;
81:
82: screen_init(&c->status, c->tty.sx, 1, 0);
1.51 nicm 83: RB_INIT(&c->status_new);
84: RB_INIT(&c->status_old);
1.1 nicm 85:
86: c->message_string = NULL;
1.21 nicm 87: ARRAY_INIT(&c->message_log);
1.1 nicm 88:
89: c->prompt_string = NULL;
90: c->prompt_buffer = NULL;
91: c->prompt_index = 0;
92:
1.57 nicm 93: c->last_mouse.b = MOUSE_UP;
94: c->last_mouse.x = c->last_mouse.y = -1;
95:
1.17 nicm 96: evtimer_set(&c->repeat_timer, server_client_repeat_timer, c);
97:
1.1 nicm 98: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
99: if (ARRAY_ITEM(&clients, i) == NULL) {
100: ARRAY_SET(&clients, i, c);
101: return;
102: }
103: }
104: ARRAY_ADD(&clients, c);
105: log_debug("new client %d", fd);
1.72 ! nicm 106: }
! 107:
! 108: /* Open client terminal if needed. */
! 109: int
! 110: server_client_open(struct client *c, struct session *s, char **cause)
! 111: {
! 112: struct options *oo = s != NULL ? &s->options : &global_s_options;
! 113: char *overrides;
! 114:
! 115: if (!(c->flags & CLIENT_TERMINAL)) {
! 116: *cause = xstrdup ("not a terminal");
! 117: return (-1);
! 118: }
! 119:
! 120: overrides = options_get_string(oo, "terminal-overrides");
! 121: if (tty_open(&c->tty, overrides, cause) != 0)
! 122: return (-1);
! 123:
! 124: return (0);
1.1 nicm 125: }
126:
127: /* Lost a client. */
128: void
129: server_client_lost(struct client *c)
130: {
1.21 nicm 131: struct message_entry *msg;
132: u_int i;
1.1 nicm 133:
134: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
135: if (ARRAY_ITEM(&clients, i) == c)
136: ARRAY_SET(&clients, i, NULL);
137: }
138: log_debug("lost client %d", c->ibuf.fd);
139:
140: /*
141: * If CLIENT_TERMINAL hasn't been set, then tty_init hasn't been called
142: * and tty_free might close an unrelated fd.
143: */
144: if (c->flags & CLIENT_TERMINAL)
145: tty_free(&c->tty);
146:
1.65 nicm 147: if (c->stdin_event != NULL)
148: bufferevent_free(c->stdin_event);
1.49 nicm 149: if (c->stdin_fd != -1) {
150: setblocking(c->stdin_fd, 1);
1.36 nicm 151: close(c->stdin_fd);
1.49 nicm 152: }
1.65 nicm 153: if (c->stdout_event != NULL)
154: bufferevent_free(c->stdout_event);
1.49 nicm 155: if (c->stdout_fd != -1) {
156: setblocking(c->stdout_fd, 1);
1.36 nicm 157: close(c->stdout_fd);
1.49 nicm 158: }
1.65 nicm 159: if (c->stderr_event != NULL)
160: bufferevent_free(c->stderr_event);
1.49 nicm 161: if (c->stderr_fd != -1) {
162: setblocking(c->stderr_fd, 1);
1.36 nicm 163: close(c->stderr_fd);
1.49 nicm 164: }
1.33 nicm 165:
1.51 nicm 166: status_free_jobs(&c->status_new);
167: status_free_jobs(&c->status_old);
1.1 nicm 168: screen_free(&c->status);
169:
170: if (c->title != NULL)
171: xfree(c->title);
172:
1.17 nicm 173: evtimer_del(&c->repeat_timer);
174:
1.69 nicm 175: if (event_initialized(&c->identify_timer))
176: evtimer_del(&c->identify_timer);
1.15 nicm 177:
1.1 nicm 178: if (c->message_string != NULL)
179: xfree(c->message_string);
1.69 nicm 180: if (event_initialized (&c->message_timer))
181: evtimer_del(&c->message_timer);
1.21 nicm 182: for (i = 0; i < ARRAY_LENGTH(&c->message_log); i++) {
183: msg = &ARRAY_ITEM(&c->message_log, i);
184: xfree(msg->msg);
185: }
186: ARRAY_FREE(&c->message_log);
1.1 nicm 187:
188: if (c->prompt_string != NULL)
189: xfree(c->prompt_string);
190: if (c->prompt_buffer != NULL)
191: xfree(c->prompt_buffer);
192:
193: if (c->cwd != NULL)
194: xfree(c->cwd);
1.61 nicm 195:
196: environ_free(&c->environ);
1.1 nicm 197:
198: close(c->ibuf.fd);
199: imsg_clear(&c->ibuf);
1.69 nicm 200: if (event_initialized(&c->event))
201: event_del(&c->event);
1.13 nicm 202:
1.1 nicm 203: for (i = 0; i < ARRAY_LENGTH(&dead_clients); i++) {
204: if (ARRAY_ITEM(&dead_clients, i) == NULL) {
205: ARRAY_SET(&dead_clients, i, c);
206: break;
207: }
208: }
209: if (i == ARRAY_LENGTH(&dead_clients))
210: ARRAY_ADD(&dead_clients, c);
211: c->flags |= CLIENT_DEAD;
1.71 nicm 212:
213: server_add_accept(0); /* may be more file descriptors now */
1.1 nicm 214:
215: recalculate_sizes();
1.41 nicm 216: server_check_unattached();
1.19 nicm 217: server_update_socket();
1.9 nicm 218: }
219:
1.1 nicm 220: /* Process a single client event. */
221: void
1.12 nicm 222: server_client_callback(int fd, short events, void *data)
1.1 nicm 223: {
224: struct client *c = data;
1.7 nicm 225:
226: if (c->flags & CLIENT_DEAD)
227: return;
1.1 nicm 228:
229: if (fd == c->ibuf.fd) {
1.12 nicm 230: if (events & EV_WRITE && msgbuf_write(&c->ibuf.w) < 0)
1.1 nicm 231: goto client_lost;
232:
233: if (c->flags & CLIENT_BAD) {
234: if (c->ibuf.w.queued == 0)
235: goto client_lost;
236: return;
237: }
238:
1.12 nicm 239: if (events & EV_READ && server_client_msg_dispatch(c) != 0)
1.1 nicm 240: goto client_lost;
241: }
1.14 nicm 242:
1.25 nicm 243: server_update_event(c);
1.1 nicm 244: return;
245:
246: client_lost:
247: server_client_lost(c);
248: }
249:
1.16 nicm 250: /* Handle client status timer. */
251: void
252: server_client_status_timer(void)
253: {
254: struct client *c;
255: struct session *s;
256: struct timeval tv;
1.20 nicm 257: u_int i;
258: int interval;
259: time_t difference;
1.16 nicm 260:
261: if (gettimeofday(&tv, NULL) != 0)
262: fatal("gettimeofday failed");
263:
264: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
265: c = ARRAY_ITEM(&clients, i);
266: if (c == NULL || c->session == NULL)
267: continue;
268: if (c->message_string != NULL || c->prompt_string != NULL) {
269: /*
270: * Don't need timed redraw for messages/prompts so bail
271: * now. The status timer isn't reset when they are
272: * redrawn anyway.
273: */
274: continue;
275: }
276: s = c->session;
277:
278: if (!options_get_number(&s->options, "status"))
279: continue;
280: interval = options_get_number(&s->options, "status-interval");
281:
1.20 nicm 282: difference = tv.tv_sec - c->status_timer.tv_sec;
283: if (difference >= interval) {
1.51 nicm 284: status_update_jobs(c);
1.16 nicm 285: c->flags |= CLIENT_STATUS;
286: }
287: }
288: }
289:
1.66 nicm 290: /* Check for mouse keys. */
291: void
292: server_client_check_mouse(
293: struct client *c, struct window_pane *wp, struct mouse_event *mouse)
294: {
295: struct session *s = c->session;
296: struct options *oo = &s->options;
297: int statusat;
298:
299: statusat = status_at_line(c);
300:
301: /* Is this a window selection click on the status line? */
302: if (statusat != -1 && mouse->y == (u_int)statusat &&
303: options_get_number(oo, "mouse-select-window")) {
304: if (mouse->b == MOUSE_UP && c->last_mouse.b != MOUSE_UP) {
305: status_set_window_at(c, mouse->x);
1.70 nicm 306: recalculate_sizes();
1.66 nicm 307: return;
308: }
309: if (mouse->b & MOUSE_45) {
310: if ((mouse->b & MOUSE_BUTTON) == MOUSE_1) {
311: session_previous(c->session, 0);
312: server_redraw_session(s);
1.70 nicm 313: recalculate_sizes();
1.66 nicm 314: }
315: if ((mouse->b & MOUSE_BUTTON) == MOUSE_2) {
316: session_next(c->session, 0);
317: server_redraw_session(s);
1.70 nicm 318: recalculate_sizes();
1.66 nicm 319: }
320: return;
321: }
1.67 nicm 322: memcpy(&c->last_mouse, mouse, sizeof c->last_mouse);
323: return;
1.66 nicm 324: }
325:
326: /*
327: * Not on status line - adjust mouse position if status line is at the
328: * top and limit if at the bottom. From here on a struct mouse
329: * represents the offset onto the window itself.
330: */
331: if (statusat == 0 &&mouse->y > 0)
332: mouse->y--;
333: else if (statusat > 0 && mouse->y >= (u_int)statusat)
334: mouse->y = statusat - 1;
335:
336: /* Is this a pane selection? Allow down only in copy mode. */
337: if (options_get_number(oo, "mouse-select-pane") &&
338: ((!(mouse->b & MOUSE_DRAG) && mouse->b != MOUSE_UP) ||
339: wp->mode != &window_copy_mode)) {
340: window_set_active_at(wp->window, mouse->x, mouse->y);
341: server_redraw_window_borders(wp->window);
342: wp = wp->window->active; /* may have changed */
343: }
344:
345: /* Check if trying to resize pane. */
346: if (options_get_number(oo, "mouse-resize-pane"))
347: layout_resize_pane_mouse(c, mouse);
348:
349: /* Update last and pass through to client. */
350: memcpy(&c->last_mouse, mouse, sizeof c->last_mouse);
351: window_pane_mouse(wp, c->session, mouse);
352: }
353:
1.18 nicm 354: /* Handle data key input from client. */
355: void
356: server_client_handle_key(int key, struct mouse_event *mouse, void *data)
357: {
358: struct client *c = data;
359: struct session *s;
360: struct window *w;
361: struct window_pane *wp;
362: struct options *oo;
363: struct timeval tv;
364: struct key_binding *bd;
365: int xtimeout, isprefix;
366:
367: /* Check the client is good to accept input. */
368: if ((c->flags & (CLIENT_DEAD|CLIENT_SUSPENDED)) != 0)
369: return;
370: if (c->session == NULL)
371: return;
372: s = c->session;
373:
374: /* Update the activity timer. */
375: if (gettimeofday(&c->activity_time, NULL) != 0)
376: fatal("gettimeofday failed");
377: memcpy(&s->activity_time, &c->activity_time, sizeof s->activity_time);
378:
379: w = c->session->curw->window;
380: wp = w->active;
381: oo = &c->session->options;
382:
383: /* Special case: number keys jump to pane in identify mode. */
1.25 nicm 384: if (c->flags & CLIENT_IDENTIFY && key >= '0' && key <= '9') {
1.30 nicm 385: if (c->flags & CLIENT_READONLY)
386: return;
1.18 nicm 387: wp = window_pane_at_index(w, key - '0');
388: if (wp != NULL && window_pane_visible(wp))
389: window_set_active_pane(w, wp);
390: server_clear_identify(c);
391: return;
392: }
393:
394: /* Handle status line. */
1.30 nicm 395: if (!(c->flags & CLIENT_READONLY)) {
396: status_message_clear(c);
397: server_clear_identify(c);
398: }
1.18 nicm 399: if (c->prompt_string != NULL) {
1.30 nicm 400: if (!(c->flags & CLIENT_READONLY))
401: status_prompt_key(c, key);
1.18 nicm 402: return;
403: }
404:
405: /* Check for mouse keys. */
406: if (key == KEYC_MOUSE) {
1.30 nicm 407: if (c->flags & CLIENT_READONLY)
408: return;
1.66 nicm 409: server_client_check_mouse(c, wp, mouse);
1.18 nicm 410: return;
411: }
412:
413: /* Is this a prefix key? */
1.63 nicm 414: if (key == options_get_number(&c->session->options, "prefix"))
415: isprefix = 1;
416: else if (key == options_get_number(&c->session->options, "prefix2"))
417: isprefix = 1;
418: else
419: isprefix = 0;
1.18 nicm 420:
421: /* No previous prefix key. */
422: if (!(c->flags & CLIENT_PREFIX)) {
423: if (isprefix)
424: c->flags |= CLIENT_PREFIX;
425: else {
426: /* Try as a non-prefix key binding. */
1.30 nicm 427: if ((bd = key_bindings_lookup(key)) == NULL) {
428: if (!(c->flags & CLIENT_READONLY))
1.31 nicm 429: window_pane_key(wp, c->session, key);
1.30 nicm 430: } else
1.18 nicm 431: key_bindings_dispatch(bd, c);
432: }
433: return;
434: }
435:
436: /* Prefix key already pressed. Reset prefix and lookup key. */
437: c->flags &= ~CLIENT_PREFIX;
438: if ((bd = key_bindings_lookup(key | KEYC_PREFIX)) == NULL) {
439: /* If repeating, treat this as a key, else ignore. */
440: if (c->flags & CLIENT_REPEAT) {
441: c->flags &= ~CLIENT_REPEAT;
442: if (isprefix)
443: c->flags |= CLIENT_PREFIX;
1.30 nicm 444: else if (!(c->flags & CLIENT_READONLY))
1.31 nicm 445: window_pane_key(wp, c->session, key);
1.18 nicm 446: }
447: return;
448: }
449:
450: /* If already repeating, but this key can't repeat, skip it. */
451: if (c->flags & CLIENT_REPEAT && !bd->can_repeat) {
452: c->flags &= ~CLIENT_REPEAT;
453: if (isprefix)
454: c->flags |= CLIENT_PREFIX;
1.30 nicm 455: else if (!(c->flags & CLIENT_READONLY))
1.31 nicm 456: window_pane_key(wp, c->session, key);
1.18 nicm 457: return;
458: }
459:
460: /* If this key can repeat, reset the repeat flags and timer. */
461: xtimeout = options_get_number(&c->session->options, "repeat-time");
462: if (xtimeout != 0 && bd->can_repeat) {
463: c->flags |= CLIENT_PREFIX|CLIENT_REPEAT;
1.25 nicm 464:
1.18 nicm 465: tv.tv_sec = xtimeout / 1000;
466: tv.tv_usec = (xtimeout % 1000) * 1000L;
467: evtimer_del(&c->repeat_timer);
468: evtimer_add(&c->repeat_timer, &tv);
469: }
470:
471: /* Dispatch the command. */
472: key_bindings_dispatch(bd, c);
473: }
474:
1.2 nicm 475: /* Client functions that need to happen every loop. */
476: void
477: server_client_loop(void)
478: {
479: struct client *c;
480: struct window *w;
481: struct window_pane *wp;
482: u_int i;
483:
484: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
485: c = ARRAY_ITEM(&clients, i);
1.36 nicm 486: if (c == NULL)
1.2 nicm 487: continue;
488:
1.36 nicm 489: server_client_check_exit(c);
490: if (c->session != NULL) {
491: server_client_check_redraw(c);
492: server_client_reset_state(c);
493: }
1.2 nicm 494: }
495:
496: /*
497: * Any windows will have been redrawn as part of clients, so clear
498: * their flags now.
499: */
500: for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
501: w = ARRAY_ITEM(&windows, i);
502: if (w == NULL)
503: continue;
504:
505: w->flags &= ~WINDOW_REDRAW;
506: TAILQ_FOREACH(wp, &w->panes, entry)
507: wp->flags &= ~PANE_REDRAW;
508: }
509: }
510:
1.18 nicm 511: /*
512: * Update cursor position and mode settings. The scroll region and attributes
513: * are cleared when idle (waiting for an event) as this is the most likely time
514: * a user may interrupt tmux, for example with ~^Z in ssh(1). This is a
515: * compromise between excessive resets and likelihood of an interrupt.
516: *
517: * tty_region/tty_reset/tty_update_mode already take care of not resetting
518: * things that are already in their default state.
519: */
1.1 nicm 520: void
1.18 nicm 521: server_client_reset_state(struct client *c)
1.1 nicm 522: {
1.18 nicm 523: struct window *w = c->session->curw->window;
524: struct window_pane *wp = w->active;
525: struct screen *s = wp->screen;
526: struct options *oo = &c->session->options;
1.54 nicm 527: struct options *wo = &w->options;
1.66 nicm 528: int status, mode, o;
1.60 nicm 529:
530: if (c->flags & CLIENT_SUSPENDED)
531: return;
1.1 nicm 532:
533: tty_region(&c->tty, 0, c->tty.sy - 1);
534:
535: status = options_get_number(oo, "status");
536: if (!window_pane_visible(wp) || wp->yoff + s->cy >= c->tty.sy - status)
537: tty_cursor(&c->tty, 0, 0);
1.66 nicm 538: else {
539: o = status && options_get_number (oo, "status-position") == 0;
540: tty_cursor(&c->tty, wp->xoff + s->cx, o + wp->yoff + s->cy);
541: }
1.1 nicm 542:
1.50 nicm 543: /*
1.57 nicm 544: * Resizing panes with the mouse requires at least button mode to give
545: * a smooth appearance.
546: */
547: mode = s->mode;
548: if ((c->last_mouse.b & MOUSE_RESIZE_PANE) &&
549: !(mode & (MODE_MOUSE_BUTTON|MODE_MOUSE_ANY)))
550: mode |= MODE_MOUSE_BUTTON;
551:
552: /*
1.50 nicm 553: * Any mode will do for mouse-select-pane, but set standard mode if
554: * none.
555: */
1.54 nicm 556: if ((mode & ALL_MOUSE_MODES) == 0) {
557: if (TAILQ_NEXT(TAILQ_FIRST(&w->panes), entry) != NULL &&
1.55 nicm 558: options_get_number(oo, "mouse-select-pane"))
1.57 nicm 559: mode |= MODE_MOUSE_STANDARD;
560: else if (options_get_number(oo, "mouse-resize-pane"))
1.54 nicm 561: mode |= MODE_MOUSE_STANDARD;
562: else if (options_get_number(oo, "mouse-select-window"))
563: mode |= MODE_MOUSE_STANDARD;
564: else if (options_get_number(wo, "mode-mouse"))
565: mode |= MODE_MOUSE_STANDARD;
566: }
1.48 nicm 567:
568: /*
569: * Set UTF-8 mouse input if required. If the terminal is UTF-8, the
570: * user has set mouse-utf8 and any mouse mode is in effect, turn on
571: * UTF-8 mouse input. If the receiving terminal hasn't requested it
572: * (that is, it isn't in s->mode), then it'll be converted in
573: * input_mouse.
574: */
575: if ((c->tty.flags & TTY_UTF8) &&
576: (mode & ALL_MOUSE_MODES) && options_get_number(oo, "mouse-utf8"))
577: mode |= MODE_MOUSE_UTF8;
578: else
579: mode &= ~MODE_MOUSE_UTF8;
580:
581: /* Set the terminal mode and reset attributes. */
1.59 nicm 582: tty_update_mode(&c->tty, mode, s);
1.1 nicm 583: tty_reset(&c->tty);
1.17 nicm 584: }
585:
586: /* Repeat time callback. */
1.24 nicm 587: /* ARGSUSED */
1.17 nicm 588: void
589: server_client_repeat_timer(unused int fd, unused short events, void *data)
590: {
591: struct client *c = data;
592:
593: if (c->flags & CLIENT_REPEAT)
594: c->flags &= ~(CLIENT_PREFIX|CLIENT_REPEAT);
1.1 nicm 595: }
596:
1.36 nicm 597: /* Check if client should be exited. */
598: void
599: server_client_check_exit(struct client *c)
600: {
601: struct msg_exit_data exitdata;
602:
603: if (!(c->flags & CLIENT_EXIT))
604: return;
605:
606: if (c->stdout_fd != -1 && c->stdout_event != NULL &&
607: EVBUFFER_LENGTH(c->stdout_event->output) != 0)
608: return;
609: if (c->stderr_fd != -1 && c->stderr_event != NULL &&
610: EVBUFFER_LENGTH(c->stderr_event->output) != 0)
611: return;
612:
613: exitdata.retcode = c->retcode;
614: server_write_client(c, MSG_EXIT, &exitdata, sizeof exitdata);
615:
616: c->flags &= ~CLIENT_EXIT;
1.38 nicm 617: }
618:
1.1 nicm 619: /* Check for client redraws. */
620: void
621: server_client_check_redraw(struct client *c)
622: {
623: struct session *s = c->session;
624: struct window_pane *wp;
625: int flags, redraw;
626:
627: flags = c->tty.flags & TTY_FREEZE;
628: c->tty.flags &= ~TTY_FREEZE;
629:
630: if (c->flags & (CLIENT_REDRAW|CLIENT_STATUS)) {
631: if (options_get_number(&s->options, "set-titles"))
632: server_client_set_title(c);
1.12 nicm 633:
1.1 nicm 634: if (c->message_string != NULL)
635: redraw = status_message_redraw(c);
636: else if (c->prompt_string != NULL)
637: redraw = status_prompt_redraw(c);
638: else
639: redraw = status_redraw(c);
640: if (!redraw)
641: c->flags &= ~CLIENT_STATUS;
642: }
643:
644: if (c->flags & CLIENT_REDRAW) {
1.27 nicm 645: screen_redraw_screen(c, 0, 0);
646: c->flags &= ~(CLIENT_STATUS|CLIENT_BORDERS);
1.38 nicm 647: } else if (c->flags & CLIENT_REDRAWWINDOW) {
648: TAILQ_FOREACH(wp, &c->session->curw->window->panes, entry)
649: screen_redraw_pane(c, wp);
650: c->flags &= ~CLIENT_REDRAWWINDOW;
1.1 nicm 651: } else {
652: TAILQ_FOREACH(wp, &c->session->curw->window->panes, entry) {
653: if (wp->flags & PANE_REDRAW)
654: screen_redraw_pane(c, wp);
655: }
656: }
657:
1.27 nicm 658: if (c->flags & CLIENT_BORDERS)
659: screen_redraw_screen(c, 0, 1);
660:
1.1 nicm 661: if (c->flags & CLIENT_STATUS)
1.27 nicm 662: screen_redraw_screen(c, 1, 0);
1.1 nicm 663:
664: c->tty.flags |= flags;
665:
1.27 nicm 666: c->flags &= ~(CLIENT_REDRAW|CLIENT_STATUS|CLIENT_BORDERS);
1.1 nicm 667: }
668:
669: /* Set client title. */
670: void
671: server_client_set_title(struct client *c)
672: {
673: struct session *s = c->session;
674: const char *template;
675: char *title;
676:
677: template = options_get_string(&s->options, "set-titles-string");
1.25 nicm 678:
1.52 nicm 679: title = status_replace(c, NULL, NULL, NULL, template, time(NULL), 1);
1.1 nicm 680: if (c->title == NULL || strcmp(title, c->title) != 0) {
681: if (c->title != NULL)
682: xfree(c->title);
683: c->title = xstrdup(title);
684: tty_set_title(&c->tty, c->title);
685: }
686: xfree(title);
687: }
688:
1.36 nicm 689: /*
690: * Error callback for client stdin. Caller must increase reference count when
691: * enabling event!
692: */
693: void
694: server_client_in_callback(
695: unused struct bufferevent *bufev, unused short what, void *data)
696: {
697: struct client *c = data;
698:
699: c->references--;
700: if (c->flags & CLIENT_DEAD)
701: return;
702:
703: bufferevent_disable(c->stdin_event, EV_READ|EV_WRITE);
1.49 nicm 704: setblocking(c->stdin_fd, 1);
1.36 nicm 705: close(c->stdin_fd);
706: c->stdin_fd = -1;
707:
708: if (c->stdin_callback != NULL)
709: c->stdin_callback(c, c->stdin_data);
710: }
711:
712: /* Error callback for client stdout. */
713: void
714: server_client_out_callback(
715: unused struct bufferevent *bufev, unused short what, unused void *data)
716: {
717: struct client *c = data;
718:
719: bufferevent_disable(c->stdout_event, EV_READ|EV_WRITE);
1.49 nicm 720: setblocking(c->stdout_fd, 1);
1.36 nicm 721: close(c->stdout_fd);
722: c->stdout_fd = -1;
723: }
724:
725: /* Error callback for client stderr. */
726: void
727: server_client_err_callback(
728: unused struct bufferevent *bufev, unused short what, unused void *data)
729: {
730: struct client *c = data;
731:
732: bufferevent_disable(c->stderr_event, EV_READ|EV_WRITE);
1.49 nicm 733: setblocking(c->stderr_fd, 1);
1.36 nicm 734: close(c->stderr_fd);
735: c->stderr_fd = -1;
736: }
737:
1.1 nicm 738: /* Dispatch message from client. */
739: int
740: server_client_msg_dispatch(struct client *c)
741: {
742: struct imsg imsg;
743: struct msg_command_data commanddata;
744: struct msg_identify_data identifydata;
745: struct msg_environ_data environdata;
746: ssize_t n, datalen;
747:
1.8 deraadt 748: if ((n = imsg_read(&c->ibuf)) == -1 || n == 0)
749: return (-1);
1.1 nicm 750:
751: for (;;) {
752: if ((n = imsg_get(&c->ibuf, &imsg)) == -1)
753: return (-1);
754: if (n == 0)
755: return (0);
756: datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
757:
758: if (imsg.hdr.peerid != PROTOCOL_VERSION) {
759: server_write_client(c, MSG_VERSION, NULL, 0);
760: c->flags |= CLIENT_BAD;
761: imsg_free(&imsg);
762: continue;
763: }
764:
765: log_debug("got %d from client %d", imsg.hdr.type, c->ibuf.fd);
766: switch (imsg.hdr.type) {
767: case MSG_COMMAND:
768: if (datalen != sizeof commanddata)
769: fatalx("bad MSG_COMMAND size");
770: memcpy(&commanddata, imsg.data, sizeof commanddata);
771:
772: server_client_msg_command(c, &commanddata);
773: break;
774: case MSG_IDENTIFY:
775: if (datalen != sizeof identifydata)
776: fatalx("bad MSG_IDENTIFY size");
777: if (imsg.fd == -1)
778: fatalx("MSG_IDENTIFY missing fd");
779: memcpy(&identifydata, imsg.data, sizeof identifydata);
780:
1.39 nicm 781: c->stdin_fd = imsg.fd;
1.37 nicm 782: c->stdin_event = bufferevent_new(c->stdin_fd,
783: NULL, NULL, server_client_in_callback, c);
1.36 nicm 784: if (c->stdin_event == NULL)
785: fatalx("failed to create stdin event");
1.49 nicm 786: setblocking(c->stdin_fd, 0);
1.36 nicm 787:
1.1 nicm 788: server_client_msg_identify(c, &identifydata, imsg.fd);
789: break;
1.33 nicm 790: case MSG_STDOUT:
791: if (datalen != 0)
792: fatalx("bad MSG_STDOUT size");
793: if (imsg.fd == -1)
794: fatalx("MSG_STDOUT missing fd");
795:
1.36 nicm 796: c->stdout_fd = imsg.fd;
1.37 nicm 797: c->stdout_event = bufferevent_new(c->stdout_fd,
798: NULL, NULL, server_client_out_callback, c);
1.36 nicm 799: if (c->stdout_event == NULL)
800: fatalx("failed to create stdout event");
1.49 nicm 801: setblocking(c->stdout_fd, 0);
1.36 nicm 802:
1.33 nicm 803: break;
804: case MSG_STDERR:
805: if (datalen != 0)
806: fatalx("bad MSG_STDERR size");
807: if (imsg.fd == -1)
808: fatalx("MSG_STDERR missing fd");
809:
1.36 nicm 810: c->stderr_fd = imsg.fd;
1.37 nicm 811: c->stderr_event = bufferevent_new(c->stderr_fd,
812: NULL, NULL, server_client_err_callback, c);
1.36 nicm 813: if (c->stderr_event == NULL)
814: fatalx("failed to create stderr event");
1.49 nicm 815: setblocking(c->stderr_fd, 0);
1.36 nicm 816:
1.33 nicm 817: break;
1.1 nicm 818: case MSG_RESIZE:
819: if (datalen != 0)
820: fatalx("bad MSG_RESIZE size");
821:
1.32 nicm 822: if (tty_resize(&c->tty)) {
823: recalculate_sizes();
824: server_redraw_client(c);
825: }
1.1 nicm 826: break;
827: case MSG_EXITING:
828: if (datalen != 0)
829: fatalx("bad MSG_EXITING size");
830:
831: c->session = NULL;
832: tty_close(&c->tty);
833: server_write_client(c, MSG_EXITED, NULL, 0);
834: break;
835: case MSG_WAKEUP:
836: case MSG_UNLOCK:
837: if (datalen != 0)
838: fatalx("bad MSG_WAKEUP size");
839:
840: if (!(c->flags & CLIENT_SUSPENDED))
841: break;
842: c->flags &= ~CLIENT_SUSPENDED;
1.10 nicm 843:
1.11 nicm 844: if (gettimeofday(&c->activity_time, NULL) != 0)
845: fatal("gettimeofday");
1.47 nicm 846: if (c->session != NULL)
847: session_update_activity(c->session);
1.10 nicm 848:
1.1 nicm 849: tty_start_tty(&c->tty);
850: server_redraw_client(c);
851: recalculate_sizes();
852: break;
853: case MSG_ENVIRON:
854: if (datalen != sizeof environdata)
855: fatalx("bad MSG_ENVIRON size");
856: memcpy(&environdata, imsg.data, sizeof environdata);
857:
858: environdata.var[(sizeof environdata.var) - 1] = '\0';
859: if (strchr(environdata.var, '=') != NULL)
860: environ_put(&c->environ, environdata.var);
861: break;
862: case MSG_SHELL:
863: if (datalen != 0)
864: fatalx("bad MSG_SHELL size");
865:
866: server_client_msg_shell(c);
867: break;
868: default:
869: fatalx("unexpected message");
870: }
871:
872: imsg_free(&imsg);
873: }
874: }
875:
876: /* Callback to send error message to client. */
877: void printflike2
878: server_client_msg_error(struct cmd_ctx *ctx, const char *fmt, ...)
879: {
1.33 nicm 880: va_list ap;
1.1 nicm 881:
882: va_start(ap, fmt);
1.36 nicm 883: evbuffer_add_vprintf(ctx->cmdclient->stderr_event->output, fmt, ap);
1.1 nicm 884: va_end(ap);
885:
1.36 nicm 886: bufferevent_write(ctx->cmdclient->stderr_event, "\n", 1);
1.34 nicm 887: ctx->cmdclient->retcode = 1;
1.1 nicm 888: }
889:
890: /* Callback to send print message to client. */
891: void printflike2
892: server_client_msg_print(struct cmd_ctx *ctx, const char *fmt, ...)
893: {
1.33 nicm 894: va_list ap;
1.1 nicm 895:
896: va_start(ap, fmt);
1.36 nicm 897: evbuffer_add_vprintf(ctx->cmdclient->stdout_event->output, fmt, ap);
1.1 nicm 898: va_end(ap);
899:
1.36 nicm 900: bufferevent_write(ctx->cmdclient->stdout_event, "\n", 1);
1.1 nicm 901: }
902:
903: /* Callback to send print message to client, if not quiet. */
904: void printflike2
905: server_client_msg_info(struct cmd_ctx *ctx, const char *fmt, ...)
906: {
1.33 nicm 907: va_list ap;
1.1 nicm 908:
1.26 nicm 909: if (options_get_number(&global_options, "quiet"))
1.1 nicm 910: return;
911:
912: va_start(ap, fmt);
1.36 nicm 913: evbuffer_add_vprintf(ctx->cmdclient->stdout_event->output, fmt, ap);
1.1 nicm 914: va_end(ap);
915:
1.36 nicm 916: bufferevent_write(ctx->cmdclient->stdout_event, "\n", 1);
1.1 nicm 917: }
918:
919: /* Handle command message. */
920: void
921: server_client_msg_command(struct client *c, struct msg_command_data *data)
922: {
1.36 nicm 923: struct cmd_ctx ctx;
924: struct cmd_list *cmdlist = NULL;
925: int argc;
926: char **argv, *cause;
1.1 nicm 927:
928: ctx.error = server_client_msg_error;
929: ctx.print = server_client_msg_print;
930: ctx.info = server_client_msg_info;
931:
932: ctx.msgdata = data;
933: ctx.curclient = NULL;
934:
935: ctx.cmdclient = c;
936:
937: argc = data->argc;
938: data->argv[(sizeof data->argv) - 1] = '\0';
939: if (cmd_unpack_argv(data->argv, sizeof data->argv, argc, &argv) != 0) {
940: server_client_msg_error(&ctx, "command too long");
941: goto error;
942: }
943:
944: if (argc == 0) {
945: argc = 1;
946: argv = xcalloc(1, sizeof *argv);
947: *argv = xstrdup("new-session");
948: }
949:
950: if ((cmdlist = cmd_list_parse(argc, argv, &cause)) == NULL) {
951: server_client_msg_error(&ctx, "%s", cause);
952: cmd_free_argv(argc, argv);
953: goto error;
954: }
955: cmd_free_argv(argc, argv);
956:
1.36 nicm 957: if (cmd_list_exec(cmdlist, &ctx) != 1)
958: c->flags |= CLIENT_EXIT;
1.1 nicm 959: cmd_list_free(cmdlist);
960: return;
961:
962: error:
963: if (cmdlist != NULL)
964: cmd_list_free(cmdlist);
1.36 nicm 965: c->flags |= CLIENT_EXIT;
1.1 nicm 966: }
967:
968: /* Handle identify message. */
969: void
970: server_client_msg_identify(
971: struct client *c, struct msg_identify_data *data, int fd)
972: {
1.33 nicm 973: int tty_fd;
974:
1.1 nicm 975: c->cwd = NULL;
976: data->cwd[(sizeof data->cwd) - 1] = '\0';
977: if (*data->cwd != '\0')
978: c->cwd = xstrdup(data->cwd);
979:
1.33 nicm 980: if (!isatty(fd))
981: return;
982: if ((tty_fd = dup(fd)) == -1)
983: fatal("dup failed");
1.1 nicm 984: data->term[(sizeof data->term) - 1] = '\0';
1.33 nicm 985: tty_init(&c->tty, tty_fd, data->term);
1.1 nicm 986: if (data->flags & IDENTIFY_UTF8)
987: c->tty.flags |= TTY_UTF8;
988: if (data->flags & IDENTIFY_256COLOURS)
989: c->tty.term_flags |= TERM_256COLOURS;
990: else if (data->flags & IDENTIFY_88COLOURS)
991: c->tty.term_flags |= TERM_88COLOURS;
1.18 nicm 992: c->tty.key_callback = server_client_handle_key;
993: c->tty.key_data = c;
1.1 nicm 994:
995: tty_resize(&c->tty);
996:
997: c->flags |= CLIENT_TERMINAL;
998: }
999:
1000: /* Handle shell message. */
1001: void
1002: server_client_msg_shell(struct client *c)
1003: {
1004: struct msg_shell_data data;
1005: const char *shell;
1.25 nicm 1006:
1.1 nicm 1007: shell = options_get_string(&global_s_options, "default-shell");
1008:
1009: if (*shell == '\0' || areshell(shell))
1010: shell = _PATH_BSHELL;
1011: if (strlcpy(data.shell, shell, sizeof data.shell) >= sizeof data.shell)
1012: strlcpy(data.shell, _PATH_BSHELL, sizeof data.shell);
1.25 nicm 1013:
1.1 nicm 1014: server_write_client(c, MSG_SHELL, &data, sizeof data);
1015: c->flags |= CLIENT_BAD; /* it will die after exec */
1016: }
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