Annotation of src/usr.bin/tmux/server-client.c, Revision 1.56
1.56 ! nicm 1: /* $OpenBSD: server-client.c,v 1.55 2011/05/04 17:40:32 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:
1.18 nicm 30: void server_client_handle_key(int, struct mouse_event *, void *);
1.17 nicm 31: void server_client_repeat_timer(int, short, void *);
1.36 nicm 32: void server_client_check_exit(struct client *);
1.40 nicm 33: void server_client_check_backoff(struct client *);
1.1 nicm 34: void server_client_check_redraw(struct client *);
35: void server_client_set_title(struct client *);
1.18 nicm 36: void server_client_reset_state(struct client *);
1.36 nicm 37: void server_client_in_callback(struct bufferevent *, short, void *);
38: void server_client_out_callback(struct bufferevent *, short, void *);
39: void server_client_err_callback(struct bufferevent *, short, void *);
1.1 nicm 40:
41: int server_client_msg_dispatch(struct client *);
42: void server_client_msg_command(struct client *, struct msg_command_data *);
43: void server_client_msg_identify(
1.25 nicm 44: struct client *, struct msg_identify_data *, int);
1.1 nicm 45: void server_client_msg_shell(struct client *);
46:
47: void printflike2 server_client_msg_error(struct cmd_ctx *, const char *, ...);
48: void printflike2 server_client_msg_print(struct cmd_ctx *, const char *, ...);
49: void printflike2 server_client_msg_info(struct cmd_ctx *, const char *, ...);
50:
51: /* Create a new client. */
52: void
53: server_client_create(int fd)
54: {
55: struct client *c;
56: u_int i;
57:
1.49 nicm 58: setblocking(fd, 0);
1.1 nicm 59:
60: c = xcalloc(1, sizeof *c);
61: c->references = 0;
62: imsg_init(&c->ibuf, fd);
1.14 nicm 63: server_update_event(c);
1.25 nicm 64:
1.10 nicm 65: if (gettimeofday(&c->creation_time, NULL) != 0)
1.1 nicm 66: fatal("gettimeofday failed");
1.11 nicm 67: memcpy(&c->activity_time, &c->creation_time, sizeof c->activity_time);
1.1 nicm 68:
1.36 nicm 69: c->stdin_event = NULL;
70: c->stdout_event = NULL;
71: c->stderr_event = NULL;
1.33 nicm 72:
1.1 nicm 73: c->tty.fd = -1;
74: c->title = NULL;
75:
76: c->session = NULL;
1.45 nicm 77: c->last_session = NULL;
1.1 nicm 78: c->tty.sx = 80;
79: c->tty.sy = 24;
80:
81: screen_init(&c->status, c->tty.sx, 1, 0);
1.51 nicm 82: RB_INIT(&c->status_new);
83: RB_INIT(&c->status_old);
1.1 nicm 84:
85: c->message_string = NULL;
1.21 nicm 86: ARRAY_INIT(&c->message_log);
1.1 nicm 87:
88: c->prompt_string = NULL;
89: c->prompt_buffer = NULL;
90: c->prompt_index = 0;
91:
1.17 nicm 92: evtimer_set(&c->repeat_timer, server_client_repeat_timer, c);
93:
1.1 nicm 94: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
95: if (ARRAY_ITEM(&clients, i) == NULL) {
96: ARRAY_SET(&clients, i, c);
97: return;
98: }
99: }
100: ARRAY_ADD(&clients, c);
101: log_debug("new client %d", fd);
102: }
103:
104: /* Lost a client. */
105: void
106: server_client_lost(struct client *c)
107: {
1.21 nicm 108: struct message_entry *msg;
109: u_int i;
1.1 nicm 110:
111: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
112: if (ARRAY_ITEM(&clients, i) == c)
113: ARRAY_SET(&clients, i, NULL);
114: }
115: log_debug("lost client %d", c->ibuf.fd);
116:
117: /*
118: * If CLIENT_TERMINAL hasn't been set, then tty_init hasn't been called
119: * and tty_free might close an unrelated fd.
120: */
121: if (c->flags & CLIENT_TERMINAL)
122: tty_free(&c->tty);
123:
1.49 nicm 124: if (c->stdin_fd != -1) {
125: setblocking(c->stdin_fd, 1);
1.36 nicm 126: close(c->stdin_fd);
1.49 nicm 127: }
1.36 nicm 128: if (c->stdin_event != NULL)
129: bufferevent_free(c->stdin_event);
1.49 nicm 130: if (c->stdout_fd != -1) {
131: setblocking(c->stdout_fd, 1);
1.36 nicm 132: close(c->stdout_fd);
1.49 nicm 133: }
1.36 nicm 134: if (c->stdout_event != NULL)
135: bufferevent_free(c->stdout_event);
1.49 nicm 136: if (c->stderr_fd != -1) {
137: setblocking(c->stderr_fd, 1);
1.36 nicm 138: close(c->stderr_fd);
1.49 nicm 139: }
1.36 nicm 140: if (c->stderr_event != NULL)
141: bufferevent_free(c->stderr_event);
1.33 nicm 142:
1.51 nicm 143: status_free_jobs(&c->status_new);
144: status_free_jobs(&c->status_old);
1.1 nicm 145: screen_free(&c->status);
146:
147: if (c->title != NULL)
148: xfree(c->title);
149:
1.17 nicm 150: evtimer_del(&c->repeat_timer);
151:
1.15 nicm 152: evtimer_del(&c->identify_timer);
153:
1.1 nicm 154: if (c->message_string != NULL)
155: xfree(c->message_string);
1.15 nicm 156: evtimer_del(&c->message_timer);
1.21 nicm 157: for (i = 0; i < ARRAY_LENGTH(&c->message_log); i++) {
158: msg = &ARRAY_ITEM(&c->message_log, i);
159: xfree(msg->msg);
160: }
161: ARRAY_FREE(&c->message_log);
1.1 nicm 162:
163: if (c->prompt_string != NULL)
164: xfree(c->prompt_string);
165: if (c->prompt_buffer != NULL)
166: xfree(c->prompt_buffer);
167:
168: if (c->cwd != NULL)
169: xfree(c->cwd);
170:
171: close(c->ibuf.fd);
172: imsg_clear(&c->ibuf);
1.12 nicm 173: event_del(&c->event);
1.13 nicm 174:
1.1 nicm 175: for (i = 0; i < ARRAY_LENGTH(&dead_clients); i++) {
176: if (ARRAY_ITEM(&dead_clients, i) == NULL) {
177: ARRAY_SET(&dead_clients, i, c);
178: break;
179: }
180: }
181: if (i == ARRAY_LENGTH(&dead_clients))
182: ARRAY_ADD(&dead_clients, c);
183: c->flags |= CLIENT_DEAD;
184:
185: recalculate_sizes();
1.41 nicm 186: server_check_unattached();
1.19 nicm 187: server_update_socket();
1.9 nicm 188: }
189:
1.1 nicm 190: /* Process a single client event. */
191: void
1.12 nicm 192: server_client_callback(int fd, short events, void *data)
1.1 nicm 193: {
194: struct client *c = data;
1.7 nicm 195:
196: if (c->flags & CLIENT_DEAD)
197: return;
1.1 nicm 198:
199: if (fd == c->ibuf.fd) {
1.12 nicm 200: if (events & EV_WRITE && msgbuf_write(&c->ibuf.w) < 0)
1.1 nicm 201: goto client_lost;
202:
203: if (c->flags & CLIENT_BAD) {
204: if (c->ibuf.w.queued == 0)
205: goto client_lost;
206: return;
207: }
208:
1.12 nicm 209: if (events & EV_READ && server_client_msg_dispatch(c) != 0)
1.1 nicm 210: goto client_lost;
211: }
1.14 nicm 212:
1.25 nicm 213: server_update_event(c);
1.1 nicm 214: return;
215:
216: client_lost:
217: server_client_lost(c);
218: }
219:
1.16 nicm 220: /* Handle client status timer. */
221: void
222: server_client_status_timer(void)
223: {
224: struct client *c;
225: struct session *s;
226: struct timeval tv;
1.20 nicm 227: u_int i;
228: int interval;
229: time_t difference;
1.16 nicm 230:
231: if (gettimeofday(&tv, NULL) != 0)
232: fatal("gettimeofday failed");
233:
234: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
235: c = ARRAY_ITEM(&clients, i);
236: if (c == NULL || c->session == NULL)
237: continue;
238: if (c->message_string != NULL || c->prompt_string != NULL) {
239: /*
240: * Don't need timed redraw for messages/prompts so bail
241: * now. The status timer isn't reset when they are
242: * redrawn anyway.
243: */
244: continue;
245: }
246: s = c->session;
247:
248: if (!options_get_number(&s->options, "status"))
249: continue;
250: interval = options_get_number(&s->options, "status-interval");
251:
1.20 nicm 252: difference = tv.tv_sec - c->status_timer.tv_sec;
253: if (difference >= interval) {
1.51 nicm 254: status_update_jobs(c);
1.16 nicm 255: c->flags |= CLIENT_STATUS;
256: }
257: }
258: }
259:
1.18 nicm 260: /* Handle data key input from client. */
261: void
262: server_client_handle_key(int key, struct mouse_event *mouse, void *data)
263: {
264: struct client *c = data;
265: struct session *s;
266: struct window *w;
267: struct window_pane *wp;
268: struct options *oo;
269: struct timeval tv;
270: struct key_binding *bd;
271: struct keylist *keylist;
272: int xtimeout, isprefix;
273: u_int i;
274:
275: /* Check the client is good to accept input. */
276: if ((c->flags & (CLIENT_DEAD|CLIENT_SUSPENDED)) != 0)
277: return;
278: if (c->session == NULL)
279: return;
280: s = c->session;
281:
282: /* Update the activity timer. */
283: if (gettimeofday(&c->activity_time, NULL) != 0)
284: fatal("gettimeofday failed");
285: memcpy(&s->activity_time, &c->activity_time, sizeof s->activity_time);
286:
287: w = c->session->curw->window;
288: wp = w->active;
289: oo = &c->session->options;
290:
291: /* Special case: number keys jump to pane in identify mode. */
1.25 nicm 292: if (c->flags & CLIENT_IDENTIFY && key >= '0' && key <= '9') {
1.30 nicm 293: if (c->flags & CLIENT_READONLY)
294: return;
1.18 nicm 295: wp = window_pane_at_index(w, key - '0');
296: if (wp != NULL && window_pane_visible(wp))
297: window_set_active_pane(w, wp);
298: server_clear_identify(c);
299: return;
300: }
301:
302: /* Handle status line. */
1.30 nicm 303: if (!(c->flags & CLIENT_READONLY)) {
304: status_message_clear(c);
305: server_clear_identify(c);
306: }
1.18 nicm 307: if (c->prompt_string != NULL) {
1.30 nicm 308: if (!(c->flags & CLIENT_READONLY))
309: status_prompt_key(c, key);
1.18 nicm 310: return;
311: }
312:
313: /* Check for mouse keys. */
314: if (key == KEYC_MOUSE) {
1.30 nicm 315: if (c->flags & CLIENT_READONLY)
316: return;
1.54 nicm 317: if (options_get_number(oo, "mouse-select-pane") &&
318: ((!(mouse->b & MOUSE_DRAG) && mouse->b != MOUSE_UP) ||
319: wp->mode != &window_copy_mode)) {
320: /*
321: * Allow pane switching in copy mode only by mouse down
322: * (click).
323: */
1.18 nicm 324: window_set_active_at(w, mouse->x, mouse->y);
1.28 nicm 325: server_redraw_window_borders(w);
1.18 nicm 326: wp = w->active;
327: }
1.56 ! nicm 328: if (mouse->y + 1 == c->tty.sy &&
1.53 nicm 329: options_get_number(oo, "mouse-select-window") &&
330: options_get_number(oo, "status")) {
1.56 ! nicm 331: if (mouse->b == MOUSE_UP) {
! 332: status_set_window_at(c, mouse->x);
! 333: return;
! 334: }
! 335: if (mouse->b & MOUSE_45) {
! 336: if ((mouse->b & MOUSE_BUTTON) == MOUSE_1) {
! 337: session_previous(c->session, 0);
! 338: server_redraw_session(s);
! 339: }
! 340: if ((mouse->b & MOUSE_BUTTON) == MOUSE_2) {
! 341: session_next(c->session, 0);
! 342: server_redraw_session(s);
! 343: }
! 344: return;
! 345: }
1.53 nicm 346: }
1.31 nicm 347: window_pane_mouse(wp, c->session, mouse);
1.18 nicm 348: return;
349: }
350:
351: /* Is this a prefix key? */
352: keylist = options_get_data(&c->session->options, "prefix");
353: isprefix = 0;
354: for (i = 0; i < ARRAY_LENGTH(keylist); i++) {
355: if (key == ARRAY_ITEM(keylist, i)) {
356: isprefix = 1;
357: break;
358: }
359: }
360:
361: /* No previous prefix key. */
362: if (!(c->flags & CLIENT_PREFIX)) {
363: if (isprefix)
364: c->flags |= CLIENT_PREFIX;
365: else {
366: /* Try as a non-prefix key binding. */
1.30 nicm 367: if ((bd = key_bindings_lookup(key)) == NULL) {
368: if (!(c->flags & CLIENT_READONLY))
1.31 nicm 369: window_pane_key(wp, c->session, key);
1.30 nicm 370: } else
1.18 nicm 371: key_bindings_dispatch(bd, c);
372: }
373: return;
374: }
375:
376: /* Prefix key already pressed. Reset prefix and lookup key. */
377: c->flags &= ~CLIENT_PREFIX;
378: if ((bd = key_bindings_lookup(key | KEYC_PREFIX)) == NULL) {
379: /* If repeating, treat this as a key, else ignore. */
380: if (c->flags & CLIENT_REPEAT) {
381: c->flags &= ~CLIENT_REPEAT;
382: if (isprefix)
383: c->flags |= CLIENT_PREFIX;
1.30 nicm 384: else if (!(c->flags & CLIENT_READONLY))
1.31 nicm 385: window_pane_key(wp, c->session, key);
1.18 nicm 386: }
387: return;
388: }
389:
390: /* If already repeating, but this key can't repeat, skip it. */
391: if (c->flags & CLIENT_REPEAT && !bd->can_repeat) {
392: c->flags &= ~CLIENT_REPEAT;
393: if (isprefix)
394: c->flags |= CLIENT_PREFIX;
1.30 nicm 395: else if (!(c->flags & CLIENT_READONLY))
1.31 nicm 396: window_pane_key(wp, c->session, key);
1.18 nicm 397: return;
398: }
399:
400: /* If this key can repeat, reset the repeat flags and timer. */
401: xtimeout = options_get_number(&c->session->options, "repeat-time");
402: if (xtimeout != 0 && bd->can_repeat) {
403: c->flags |= CLIENT_PREFIX|CLIENT_REPEAT;
1.25 nicm 404:
1.18 nicm 405: tv.tv_sec = xtimeout / 1000;
406: tv.tv_usec = (xtimeout % 1000) * 1000L;
407: evtimer_del(&c->repeat_timer);
408: evtimer_add(&c->repeat_timer, &tv);
409: }
410:
411: /* Dispatch the command. */
412: key_bindings_dispatch(bd, c);
413: }
414:
1.2 nicm 415: /* Client functions that need to happen every loop. */
416: void
417: server_client_loop(void)
418: {
419: struct client *c;
420: struct window *w;
421: struct window_pane *wp;
422: u_int i;
423:
424: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
425: c = ARRAY_ITEM(&clients, i);
1.36 nicm 426: if (c == NULL)
1.2 nicm 427: continue;
428:
1.36 nicm 429: server_client_check_exit(c);
430: if (c->session != NULL) {
431: server_client_check_redraw(c);
432: server_client_reset_state(c);
433: }
1.2 nicm 434: }
435:
436: /*
437: * Any windows will have been redrawn as part of clients, so clear
438: * their flags now.
439: */
440: for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
441: w = ARRAY_ITEM(&windows, i);
442: if (w == NULL)
443: continue;
444:
445: w->flags &= ~WINDOW_REDRAW;
446: TAILQ_FOREACH(wp, &w->panes, entry)
447: wp->flags &= ~PANE_REDRAW;
448: }
449: }
450:
1.18 nicm 451: /*
452: * Update cursor position and mode settings. The scroll region and attributes
453: * are cleared when idle (waiting for an event) as this is the most likely time
454: * a user may interrupt tmux, for example with ~^Z in ssh(1). This is a
455: * compromise between excessive resets and likelihood of an interrupt.
456: *
457: * tty_region/tty_reset/tty_update_mode already take care of not resetting
458: * things that are already in their default state.
459: */
1.1 nicm 460: void
1.18 nicm 461: server_client_reset_state(struct client *c)
1.1 nicm 462: {
1.18 nicm 463: struct window *w = c->session->curw->window;
464: struct window_pane *wp = w->active;
465: struct screen *s = wp->screen;
466: struct options *oo = &c->session->options;
1.54 nicm 467: struct options *wo = &w->options;
1.18 nicm 468: int status, mode;
1.1 nicm 469:
470: tty_region(&c->tty, 0, c->tty.sy - 1);
471:
472: status = options_get_number(oo, "status");
473: if (!window_pane_visible(wp) || wp->yoff + s->cy >= c->tty.sy - status)
474: tty_cursor(&c->tty, 0, 0);
475: else
476: tty_cursor(&c->tty, wp->xoff + s->cx, wp->yoff + s->cy);
477:
1.50 nicm 478: /*
479: * Any mode will do for mouse-select-pane, but set standard mode if
480: * none.
481: */
1.1 nicm 482: mode = s->mode;
1.54 nicm 483: if ((mode & ALL_MOUSE_MODES) == 0) {
484: if (TAILQ_NEXT(TAILQ_FIRST(&w->panes), entry) != NULL &&
1.55 nicm 485: options_get_number(oo, "mouse-select-pane"))
1.54 nicm 486: mode |= MODE_MOUSE_STANDARD;
487: else if (options_get_number(oo, "mouse-select-window"))
488: mode |= MODE_MOUSE_STANDARD;
489: else if (options_get_number(wo, "mode-mouse"))
490: mode |= MODE_MOUSE_STANDARD;
491: }
1.48 nicm 492:
493: /*
494: * Set UTF-8 mouse input if required. If the terminal is UTF-8, the
495: * user has set mouse-utf8 and any mouse mode is in effect, turn on
496: * UTF-8 mouse input. If the receiving terminal hasn't requested it
497: * (that is, it isn't in s->mode), then it'll be converted in
498: * input_mouse.
499: */
500: if ((c->tty.flags & TTY_UTF8) &&
501: (mode & ALL_MOUSE_MODES) && options_get_number(oo, "mouse-utf8"))
502: mode |= MODE_MOUSE_UTF8;
503: else
504: mode &= ~MODE_MOUSE_UTF8;
505:
506: /* Set the terminal mode and reset attributes. */
1.1 nicm 507: tty_update_mode(&c->tty, mode);
508: tty_reset(&c->tty);
1.17 nicm 509: }
510:
511: /* Repeat time callback. */
1.24 nicm 512: /* ARGSUSED */
1.17 nicm 513: void
514: server_client_repeat_timer(unused int fd, unused short events, void *data)
515: {
516: struct client *c = data;
517:
518: if (c->flags & CLIENT_REPEAT)
519: c->flags &= ~(CLIENT_PREFIX|CLIENT_REPEAT);
1.1 nicm 520: }
521:
1.36 nicm 522: /* Check if client should be exited. */
523: void
524: server_client_check_exit(struct client *c)
525: {
526: struct msg_exit_data exitdata;
527:
528: if (!(c->flags & CLIENT_EXIT))
529: return;
530:
531: if (c->stdout_fd != -1 && c->stdout_event != NULL &&
532: EVBUFFER_LENGTH(c->stdout_event->output) != 0)
533: return;
534: if (c->stderr_fd != -1 && c->stderr_event != NULL &&
535: EVBUFFER_LENGTH(c->stderr_event->output) != 0)
536: return;
537:
538: exitdata.retcode = c->retcode;
539: server_write_client(c, MSG_EXIT, &exitdata, sizeof exitdata);
540:
541: c->flags &= ~CLIENT_EXIT;
542: }
543:
1.38 nicm 544: /*
545: * Check if the client should backoff. During backoff, data from external
546: * programs is not written to the terminal. When the existing data drains, the
547: * client is redrawn.
548: *
549: * There are two backoff phases - both the tty and client have backoff flags -
550: * the first to allow existing data to drain and the latter to ensure backoff
551: * is disabled until the redraw has finished and prevent the redraw triggering
552: * another backoff.
553: */
554: void
555: server_client_check_backoff(struct client *c)
556: {
557: struct tty *tty = &c->tty;
558: size_t used;
559:
560: used = EVBUFFER_LENGTH(tty->event->output);
561:
562: /*
563: * If in the second backoff phase (redrawing), don't check backoff
564: * until the redraw has completed (or enough of it to drop below the
565: * backoff threshold).
566: */
567: if (c->flags & CLIENT_BACKOFF) {
568: if (used > BACKOFF_THRESHOLD)
569: return;
570: c->flags &= ~CLIENT_BACKOFF;
571: return;
572: }
573:
574: /* Once drained, allow data through again and schedule redraw. */
575: if (tty->flags & TTY_BACKOFF) {
576: if (used != 0)
577: return;
578: tty->flags &= ~TTY_BACKOFF;
579: c->flags |= (CLIENT_BACKOFF|CLIENT_REDRAWWINDOW|CLIENT_STATUS);
580: return;
581: }
582:
583: /* If too much data, start backoff. */
584: if (used > BACKOFF_THRESHOLD)
585: tty->flags |= TTY_BACKOFF;
586: }
587:
1.1 nicm 588: /* Check for client redraws. */
589: void
590: server_client_check_redraw(struct client *c)
591: {
592: struct session *s = c->session;
593: struct window_pane *wp;
594: int flags, redraw;
595:
596: flags = c->tty.flags & TTY_FREEZE;
597: c->tty.flags &= ~TTY_FREEZE;
598:
599: if (c->flags & (CLIENT_REDRAW|CLIENT_STATUS)) {
600: if (options_get_number(&s->options, "set-titles"))
601: server_client_set_title(c);
1.12 nicm 602:
1.1 nicm 603: if (c->message_string != NULL)
604: redraw = status_message_redraw(c);
605: else if (c->prompt_string != NULL)
606: redraw = status_prompt_redraw(c);
607: else
608: redraw = status_redraw(c);
609: if (!redraw)
610: c->flags &= ~CLIENT_STATUS;
611: }
612:
613: if (c->flags & CLIENT_REDRAW) {
1.27 nicm 614: screen_redraw_screen(c, 0, 0);
615: c->flags &= ~(CLIENT_STATUS|CLIENT_BORDERS);
1.38 nicm 616: } else if (c->flags & CLIENT_REDRAWWINDOW) {
617: TAILQ_FOREACH(wp, &c->session->curw->window->panes, entry)
618: screen_redraw_pane(c, wp);
619: c->flags &= ~CLIENT_REDRAWWINDOW;
1.1 nicm 620: } else {
621: TAILQ_FOREACH(wp, &c->session->curw->window->panes, entry) {
622: if (wp->flags & PANE_REDRAW)
623: screen_redraw_pane(c, wp);
624: }
625: }
626:
1.27 nicm 627: if (c->flags & CLIENT_BORDERS)
628: screen_redraw_screen(c, 0, 1);
629:
1.1 nicm 630: if (c->flags & CLIENT_STATUS)
1.27 nicm 631: screen_redraw_screen(c, 1, 0);
1.1 nicm 632:
633: c->tty.flags |= flags;
634:
1.27 nicm 635: c->flags &= ~(CLIENT_REDRAW|CLIENT_STATUS|CLIENT_BORDERS);
1.1 nicm 636: }
637:
638: /* Set client title. */
639: void
640: server_client_set_title(struct client *c)
641: {
642: struct session *s = c->session;
643: const char *template;
644: char *title;
645:
646: template = options_get_string(&s->options, "set-titles-string");
1.25 nicm 647:
1.52 nicm 648: title = status_replace(c, NULL, NULL, NULL, template, time(NULL), 1);
1.1 nicm 649: if (c->title == NULL || strcmp(title, c->title) != 0) {
650: if (c->title != NULL)
651: xfree(c->title);
652: c->title = xstrdup(title);
653: tty_set_title(&c->tty, c->title);
654: }
655: xfree(title);
656: }
657:
1.36 nicm 658: /*
659: * Error callback for client stdin. Caller must increase reference count when
660: * enabling event!
661: */
662: void
663: server_client_in_callback(
664: unused struct bufferevent *bufev, unused short what, void *data)
665: {
666: struct client *c = data;
667:
668: c->references--;
669: if (c->flags & CLIENT_DEAD)
670: return;
671:
672: bufferevent_disable(c->stdin_event, EV_READ|EV_WRITE);
1.49 nicm 673: setblocking(c->stdin_fd, 1);
1.36 nicm 674: close(c->stdin_fd);
675: c->stdin_fd = -1;
676:
677: if (c->stdin_callback != NULL)
678: c->stdin_callback(c, c->stdin_data);
679: }
680:
681: /* Error callback for client stdout. */
682: void
683: server_client_out_callback(
684: unused struct bufferevent *bufev, unused short what, unused void *data)
685: {
686: struct client *c = data;
687:
688: bufferevent_disable(c->stdout_event, EV_READ|EV_WRITE);
1.49 nicm 689: setblocking(c->stdout_fd, 1);
1.36 nicm 690: close(c->stdout_fd);
691: c->stdout_fd = -1;
692: }
693:
694: /* Error callback for client stderr. */
695: void
696: server_client_err_callback(
697: unused struct bufferevent *bufev, unused short what, unused void *data)
698: {
699: struct client *c = data;
700:
701: bufferevent_disable(c->stderr_event, EV_READ|EV_WRITE);
1.49 nicm 702: setblocking(c->stderr_fd, 1);
1.36 nicm 703: close(c->stderr_fd);
704: c->stderr_fd = -1;
705: }
706:
1.1 nicm 707: /* Dispatch message from client. */
708: int
709: server_client_msg_dispatch(struct client *c)
710: {
711: struct imsg imsg;
712: struct msg_command_data commanddata;
713: struct msg_identify_data identifydata;
714: struct msg_environ_data environdata;
715: ssize_t n, datalen;
716:
1.8 deraadt 717: if ((n = imsg_read(&c->ibuf)) == -1 || n == 0)
718: return (-1);
1.1 nicm 719:
720: for (;;) {
721: if ((n = imsg_get(&c->ibuf, &imsg)) == -1)
722: return (-1);
723: if (n == 0)
724: return (0);
725: datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
726:
727: if (imsg.hdr.peerid != PROTOCOL_VERSION) {
728: server_write_client(c, MSG_VERSION, NULL, 0);
729: c->flags |= CLIENT_BAD;
730: imsg_free(&imsg);
731: continue;
732: }
733:
734: log_debug("got %d from client %d", imsg.hdr.type, c->ibuf.fd);
735: switch (imsg.hdr.type) {
736: case MSG_COMMAND:
737: if (datalen != sizeof commanddata)
738: fatalx("bad MSG_COMMAND size");
739: memcpy(&commanddata, imsg.data, sizeof commanddata);
740:
741: server_client_msg_command(c, &commanddata);
742: break;
743: case MSG_IDENTIFY:
744: if (datalen != sizeof identifydata)
745: fatalx("bad MSG_IDENTIFY size");
746: if (imsg.fd == -1)
747: fatalx("MSG_IDENTIFY missing fd");
748: memcpy(&identifydata, imsg.data, sizeof identifydata);
749:
1.39 nicm 750: c->stdin_fd = imsg.fd;
1.37 nicm 751: c->stdin_event = bufferevent_new(c->stdin_fd,
752: NULL, NULL, server_client_in_callback, c);
1.36 nicm 753: if (c->stdin_event == NULL)
754: fatalx("failed to create stdin event");
1.49 nicm 755: setblocking(c->stdin_fd, 0);
1.36 nicm 756:
1.1 nicm 757: server_client_msg_identify(c, &identifydata, imsg.fd);
758: break;
1.33 nicm 759: case MSG_STDOUT:
760: if (datalen != 0)
761: fatalx("bad MSG_STDOUT size");
762: if (imsg.fd == -1)
763: fatalx("MSG_STDOUT missing fd");
764:
1.36 nicm 765: c->stdout_fd = imsg.fd;
1.37 nicm 766: c->stdout_event = bufferevent_new(c->stdout_fd,
767: NULL, NULL, server_client_out_callback, c);
1.36 nicm 768: if (c->stdout_event == NULL)
769: fatalx("failed to create stdout event");
1.49 nicm 770: setblocking(c->stdout_fd, 0);
1.36 nicm 771:
1.33 nicm 772: break;
773: case MSG_STDERR:
774: if (datalen != 0)
775: fatalx("bad MSG_STDERR size");
776: if (imsg.fd == -1)
777: fatalx("MSG_STDERR missing fd");
778:
1.36 nicm 779: c->stderr_fd = imsg.fd;
1.37 nicm 780: c->stderr_event = bufferevent_new(c->stderr_fd,
781: NULL, NULL, server_client_err_callback, c);
1.36 nicm 782: if (c->stderr_event == NULL)
783: fatalx("failed to create stderr event");
1.49 nicm 784: setblocking(c->stderr_fd, 0);
1.36 nicm 785:
1.33 nicm 786: break;
1.1 nicm 787: case MSG_RESIZE:
788: if (datalen != 0)
789: fatalx("bad MSG_RESIZE size");
790:
1.32 nicm 791: if (tty_resize(&c->tty)) {
792: recalculate_sizes();
793: server_redraw_client(c);
794: }
1.1 nicm 795: break;
796: case MSG_EXITING:
797: if (datalen != 0)
798: fatalx("bad MSG_EXITING size");
799:
800: c->session = NULL;
801: tty_close(&c->tty);
802: server_write_client(c, MSG_EXITED, NULL, 0);
803: break;
804: case MSG_WAKEUP:
805: case MSG_UNLOCK:
806: if (datalen != 0)
807: fatalx("bad MSG_WAKEUP size");
808:
809: if (!(c->flags & CLIENT_SUSPENDED))
810: break;
811: c->flags &= ~CLIENT_SUSPENDED;
1.10 nicm 812:
1.11 nicm 813: if (gettimeofday(&c->activity_time, NULL) != 0)
814: fatal("gettimeofday");
1.47 nicm 815: if (c->session != NULL)
816: session_update_activity(c->session);
1.10 nicm 817:
1.1 nicm 818: tty_start_tty(&c->tty);
819: server_redraw_client(c);
820: recalculate_sizes();
821: break;
822: case MSG_ENVIRON:
823: if (datalen != sizeof environdata)
824: fatalx("bad MSG_ENVIRON size");
825: memcpy(&environdata, imsg.data, sizeof environdata);
826:
827: environdata.var[(sizeof environdata.var) - 1] = '\0';
828: if (strchr(environdata.var, '=') != NULL)
829: environ_put(&c->environ, environdata.var);
830: break;
831: case MSG_SHELL:
832: if (datalen != 0)
833: fatalx("bad MSG_SHELL size");
834:
835: server_client_msg_shell(c);
836: break;
837: default:
838: fatalx("unexpected message");
839: }
840:
841: imsg_free(&imsg);
842: }
843: }
844:
845: /* Callback to send error message to client. */
846: void printflike2
847: server_client_msg_error(struct cmd_ctx *ctx, const char *fmt, ...)
848: {
1.33 nicm 849: va_list ap;
1.1 nicm 850:
851: va_start(ap, fmt);
1.36 nicm 852: evbuffer_add_vprintf(ctx->cmdclient->stderr_event->output, fmt, ap);
1.1 nicm 853: va_end(ap);
854:
1.36 nicm 855: bufferevent_write(ctx->cmdclient->stderr_event, "\n", 1);
1.34 nicm 856: ctx->cmdclient->retcode = 1;
1.1 nicm 857: }
858:
859: /* Callback to send print message to client. */
860: void printflike2
861: server_client_msg_print(struct cmd_ctx *ctx, const char *fmt, ...)
862: {
1.33 nicm 863: va_list ap;
1.1 nicm 864:
865: va_start(ap, fmt);
1.36 nicm 866: evbuffer_add_vprintf(ctx->cmdclient->stdout_event->output, fmt, ap);
1.1 nicm 867: va_end(ap);
868:
1.36 nicm 869: bufferevent_write(ctx->cmdclient->stdout_event, "\n", 1);
1.1 nicm 870: }
871:
872: /* Callback to send print message to client, if not quiet. */
873: void printflike2
874: server_client_msg_info(struct cmd_ctx *ctx, const char *fmt, ...)
875: {
1.33 nicm 876: va_list ap;
1.1 nicm 877:
1.26 nicm 878: if (options_get_number(&global_options, "quiet"))
1.1 nicm 879: return;
880:
881: va_start(ap, fmt);
1.36 nicm 882: evbuffer_add_vprintf(ctx->cmdclient->stdout_event->output, fmt, ap);
1.1 nicm 883: va_end(ap);
884:
1.36 nicm 885: bufferevent_write(ctx->cmdclient->stdout_event, "\n", 1);
1.1 nicm 886: }
887:
888: /* Handle command message. */
889: void
890: server_client_msg_command(struct client *c, struct msg_command_data *data)
891: {
1.36 nicm 892: struct cmd_ctx ctx;
893: struct cmd_list *cmdlist = NULL;
894: int argc;
895: char **argv, *cause;
1.1 nicm 896:
897: ctx.error = server_client_msg_error;
898: ctx.print = server_client_msg_print;
899: ctx.info = server_client_msg_info;
900:
901: ctx.msgdata = data;
902: ctx.curclient = NULL;
903:
904: ctx.cmdclient = c;
905:
906: argc = data->argc;
907: data->argv[(sizeof data->argv) - 1] = '\0';
908: if (cmd_unpack_argv(data->argv, sizeof data->argv, argc, &argv) != 0) {
909: server_client_msg_error(&ctx, "command too long");
910: goto error;
911: }
912:
913: if (argc == 0) {
914: argc = 1;
915: argv = xcalloc(1, sizeof *argv);
916: *argv = xstrdup("new-session");
917: }
918:
919: if ((cmdlist = cmd_list_parse(argc, argv, &cause)) == NULL) {
920: server_client_msg_error(&ctx, "%s", cause);
921: cmd_free_argv(argc, argv);
922: goto error;
923: }
924: cmd_free_argv(argc, argv);
925:
1.36 nicm 926: if (cmd_list_exec(cmdlist, &ctx) != 1)
927: c->flags |= CLIENT_EXIT;
1.1 nicm 928: cmd_list_free(cmdlist);
929: return;
930:
931: error:
932: if (cmdlist != NULL)
933: cmd_list_free(cmdlist);
1.36 nicm 934: c->flags |= CLIENT_EXIT;
1.1 nicm 935: }
936:
937: /* Handle identify message. */
938: void
939: server_client_msg_identify(
940: struct client *c, struct msg_identify_data *data, int fd)
941: {
1.33 nicm 942: int tty_fd;
943:
1.1 nicm 944: c->cwd = NULL;
945: data->cwd[(sizeof data->cwd) - 1] = '\0';
946: if (*data->cwd != '\0')
947: c->cwd = xstrdup(data->cwd);
948:
1.33 nicm 949: if (!isatty(fd))
950: return;
951: if ((tty_fd = dup(fd)) == -1)
952: fatal("dup failed");
1.1 nicm 953: data->term[(sizeof data->term) - 1] = '\0';
1.33 nicm 954: tty_init(&c->tty, tty_fd, data->term);
1.1 nicm 955: if (data->flags & IDENTIFY_UTF8)
956: c->tty.flags |= TTY_UTF8;
957: if (data->flags & IDENTIFY_256COLOURS)
958: c->tty.term_flags |= TERM_256COLOURS;
959: else if (data->flags & IDENTIFY_88COLOURS)
960: c->tty.term_flags |= TERM_88COLOURS;
1.18 nicm 961: c->tty.key_callback = server_client_handle_key;
962: c->tty.key_data = c;
1.1 nicm 963:
964: tty_resize(&c->tty);
965:
966: c->flags |= CLIENT_TERMINAL;
967: }
968:
969: /* Handle shell message. */
970: void
971: server_client_msg_shell(struct client *c)
972: {
973: struct msg_shell_data data;
974: const char *shell;
1.25 nicm 975:
1.1 nicm 976: shell = options_get_string(&global_s_options, "default-shell");
977:
978: if (*shell == '\0' || areshell(shell))
979: shell = _PATH_BSHELL;
980: if (strlcpy(data.shell, shell, sizeof data.shell) >= sizeof data.shell)
981: strlcpy(data.shell, _PATH_BSHELL, sizeof data.shell);
1.25 nicm 982:
1.1 nicm 983: server_write_client(c, MSG_SHELL, &data, sizeof data);
984: c->flags |= CLIENT_BAD; /* it will die after exec */
985: }
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