Annotation of src/usr.bin/tmux/server-client.c, Revision 1.57
1.57 ! nicm 1: /* $OpenBSD: server-client.c,v 1.56 2011/05/04 18:10:28 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:
1.57 ! nicm 92: c->last_mouse.b = MOUSE_UP;
! 93: c->last_mouse.x = c->last_mouse.y = -1;
! 94:
1.17 nicm 95: evtimer_set(&c->repeat_timer, server_client_repeat_timer, c);
96:
1.1 nicm 97: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
98: if (ARRAY_ITEM(&clients, i) == NULL) {
99: ARRAY_SET(&clients, i, c);
100: return;
101: }
102: }
103: ARRAY_ADD(&clients, c);
104: log_debug("new client %d", fd);
105: }
106:
107: /* Lost a client. */
108: void
109: server_client_lost(struct client *c)
110: {
1.21 nicm 111: struct message_entry *msg;
112: u_int i;
1.1 nicm 113:
114: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
115: if (ARRAY_ITEM(&clients, i) == c)
116: ARRAY_SET(&clients, i, NULL);
117: }
118: log_debug("lost client %d", c->ibuf.fd);
119:
120: /*
121: * If CLIENT_TERMINAL hasn't been set, then tty_init hasn't been called
122: * and tty_free might close an unrelated fd.
123: */
124: if (c->flags & CLIENT_TERMINAL)
125: tty_free(&c->tty);
126:
1.49 nicm 127: if (c->stdin_fd != -1) {
128: setblocking(c->stdin_fd, 1);
1.36 nicm 129: close(c->stdin_fd);
1.49 nicm 130: }
1.36 nicm 131: if (c->stdin_event != NULL)
132: bufferevent_free(c->stdin_event);
1.49 nicm 133: if (c->stdout_fd != -1) {
134: setblocking(c->stdout_fd, 1);
1.36 nicm 135: close(c->stdout_fd);
1.49 nicm 136: }
1.36 nicm 137: if (c->stdout_event != NULL)
138: bufferevent_free(c->stdout_event);
1.49 nicm 139: if (c->stderr_fd != -1) {
140: setblocking(c->stderr_fd, 1);
1.36 nicm 141: close(c->stderr_fd);
1.49 nicm 142: }
1.36 nicm 143: if (c->stderr_event != NULL)
144: bufferevent_free(c->stderr_event);
1.33 nicm 145:
1.51 nicm 146: status_free_jobs(&c->status_new);
147: status_free_jobs(&c->status_old);
1.1 nicm 148: screen_free(&c->status);
149:
150: if (c->title != NULL)
151: xfree(c->title);
152:
1.17 nicm 153: evtimer_del(&c->repeat_timer);
154:
1.15 nicm 155: evtimer_del(&c->identify_timer);
156:
1.1 nicm 157: if (c->message_string != NULL)
158: xfree(c->message_string);
1.15 nicm 159: evtimer_del(&c->message_timer);
1.21 nicm 160: for (i = 0; i < ARRAY_LENGTH(&c->message_log); i++) {
161: msg = &ARRAY_ITEM(&c->message_log, i);
162: xfree(msg->msg);
163: }
164: ARRAY_FREE(&c->message_log);
1.1 nicm 165:
166: if (c->prompt_string != NULL)
167: xfree(c->prompt_string);
168: if (c->prompt_buffer != NULL)
169: xfree(c->prompt_buffer);
170:
171: if (c->cwd != NULL)
172: xfree(c->cwd);
173:
174: close(c->ibuf.fd);
175: imsg_clear(&c->ibuf);
1.12 nicm 176: event_del(&c->event);
1.13 nicm 177:
1.1 nicm 178: for (i = 0; i < ARRAY_LENGTH(&dead_clients); i++) {
179: if (ARRAY_ITEM(&dead_clients, i) == NULL) {
180: ARRAY_SET(&dead_clients, i, c);
181: break;
182: }
183: }
184: if (i == ARRAY_LENGTH(&dead_clients))
185: ARRAY_ADD(&dead_clients, c);
186: c->flags |= CLIENT_DEAD;
187:
188: recalculate_sizes();
1.41 nicm 189: server_check_unattached();
1.19 nicm 190: server_update_socket();
1.9 nicm 191: }
192:
1.1 nicm 193: /* Process a single client event. */
194: void
1.12 nicm 195: server_client_callback(int fd, short events, void *data)
1.1 nicm 196: {
197: struct client *c = data;
1.7 nicm 198:
199: if (c->flags & CLIENT_DEAD)
200: return;
1.1 nicm 201:
202: if (fd == c->ibuf.fd) {
1.12 nicm 203: if (events & EV_WRITE && msgbuf_write(&c->ibuf.w) < 0)
1.1 nicm 204: goto client_lost;
205:
206: if (c->flags & CLIENT_BAD) {
207: if (c->ibuf.w.queued == 0)
208: goto client_lost;
209: return;
210: }
211:
1.12 nicm 212: if (events & EV_READ && server_client_msg_dispatch(c) != 0)
1.1 nicm 213: goto client_lost;
214: }
1.14 nicm 215:
1.25 nicm 216: server_update_event(c);
1.1 nicm 217: return;
218:
219: client_lost:
220: server_client_lost(c);
221: }
222:
1.16 nicm 223: /* Handle client status timer. */
224: void
225: server_client_status_timer(void)
226: {
227: struct client *c;
228: struct session *s;
229: struct timeval tv;
1.20 nicm 230: u_int i;
231: int interval;
232: time_t difference;
1.16 nicm 233:
234: if (gettimeofday(&tv, NULL) != 0)
235: fatal("gettimeofday failed");
236:
237: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
238: c = ARRAY_ITEM(&clients, i);
239: if (c == NULL || c->session == NULL)
240: continue;
241: if (c->message_string != NULL || c->prompt_string != NULL) {
242: /*
243: * Don't need timed redraw for messages/prompts so bail
244: * now. The status timer isn't reset when they are
245: * redrawn anyway.
246: */
247: continue;
248: }
249: s = c->session;
250:
251: if (!options_get_number(&s->options, "status"))
252: continue;
253: interval = options_get_number(&s->options, "status-interval");
254:
1.20 nicm 255: difference = tv.tv_sec - c->status_timer.tv_sec;
256: if (difference >= interval) {
1.51 nicm 257: status_update_jobs(c);
1.16 nicm 258: c->flags |= CLIENT_STATUS;
259: }
260: }
261: }
262:
1.18 nicm 263: /* Handle data key input from client. */
264: void
265: server_client_handle_key(int key, struct mouse_event *mouse, void *data)
266: {
267: struct client *c = data;
268: struct session *s;
269: struct window *w;
270: struct window_pane *wp;
271: struct options *oo;
272: struct timeval tv;
273: struct key_binding *bd;
274: struct keylist *keylist;
275: int xtimeout, isprefix;
276: u_int i;
277:
278: /* Check the client is good to accept input. */
279: if ((c->flags & (CLIENT_DEAD|CLIENT_SUSPENDED)) != 0)
280: return;
281: if (c->session == NULL)
282: return;
283: s = c->session;
284:
285: /* Update the activity timer. */
286: if (gettimeofday(&c->activity_time, NULL) != 0)
287: fatal("gettimeofday failed");
288: memcpy(&s->activity_time, &c->activity_time, sizeof s->activity_time);
289:
290: w = c->session->curw->window;
291: wp = w->active;
292: oo = &c->session->options;
293:
294: /* Special case: number keys jump to pane in identify mode. */
1.25 nicm 295: if (c->flags & CLIENT_IDENTIFY && key >= '0' && key <= '9') {
1.30 nicm 296: if (c->flags & CLIENT_READONLY)
297: return;
1.18 nicm 298: wp = window_pane_at_index(w, key - '0');
299: if (wp != NULL && window_pane_visible(wp))
300: window_set_active_pane(w, wp);
301: server_clear_identify(c);
302: return;
303: }
304:
305: /* Handle status line. */
1.30 nicm 306: if (!(c->flags & CLIENT_READONLY)) {
307: status_message_clear(c);
308: server_clear_identify(c);
309: }
1.18 nicm 310: if (c->prompt_string != NULL) {
1.30 nicm 311: if (!(c->flags & CLIENT_READONLY))
312: status_prompt_key(c, key);
1.18 nicm 313: return;
314: }
315:
316: /* Check for mouse keys. */
317: if (key == KEYC_MOUSE) {
1.30 nicm 318: if (c->flags & CLIENT_READONLY)
319: return;
1.54 nicm 320: if (options_get_number(oo, "mouse-select-pane") &&
321: ((!(mouse->b & MOUSE_DRAG) && mouse->b != MOUSE_UP) ||
322: wp->mode != &window_copy_mode)) {
323: /*
324: * Allow pane switching in copy mode only by mouse down
325: * (click).
326: */
1.18 nicm 327: window_set_active_at(w, mouse->x, mouse->y);
1.28 nicm 328: server_redraw_window_borders(w);
1.18 nicm 329: wp = w->active;
330: }
1.56 nicm 331: if (mouse->y + 1 == c->tty.sy &&
1.53 nicm 332: options_get_number(oo, "mouse-select-window") &&
333: options_get_number(oo, "status")) {
1.56 nicm 334: if (mouse->b == MOUSE_UP) {
335: status_set_window_at(c, mouse->x);
336: return;
337: }
338: if (mouse->b & MOUSE_45) {
339: if ((mouse->b & MOUSE_BUTTON) == MOUSE_1) {
340: session_previous(c->session, 0);
341: server_redraw_session(s);
342: }
343: if ((mouse->b & MOUSE_BUTTON) == MOUSE_2) {
344: session_next(c->session, 0);
345: server_redraw_session(s);
346: }
347: return;
348: }
1.53 nicm 349: }
1.57 ! nicm 350: if (options_get_number(oo, "mouse-resize-pane"))
! 351: layout_resize_pane_mouse(c, mouse);
! 352: memcpy(&c->last_mouse, mouse, sizeof c->last_mouse);
1.31 nicm 353: window_pane_mouse(wp, c->session, mouse);
1.18 nicm 354: return;
355: }
356:
357: /* Is this a prefix key? */
358: keylist = options_get_data(&c->session->options, "prefix");
359: isprefix = 0;
360: for (i = 0; i < ARRAY_LENGTH(keylist); i++) {
361: if (key == ARRAY_ITEM(keylist, i)) {
362: isprefix = 1;
363: break;
364: }
365: }
366:
367: /* No previous prefix key. */
368: if (!(c->flags & CLIENT_PREFIX)) {
369: if (isprefix)
370: c->flags |= CLIENT_PREFIX;
371: else {
372: /* Try as a non-prefix key binding. */
1.30 nicm 373: if ((bd = key_bindings_lookup(key)) == NULL) {
374: if (!(c->flags & CLIENT_READONLY))
1.31 nicm 375: window_pane_key(wp, c->session, key);
1.30 nicm 376: } else
1.18 nicm 377: key_bindings_dispatch(bd, c);
378: }
379: return;
380: }
381:
382: /* Prefix key already pressed. Reset prefix and lookup key. */
383: c->flags &= ~CLIENT_PREFIX;
384: if ((bd = key_bindings_lookup(key | KEYC_PREFIX)) == NULL) {
385: /* If repeating, treat this as a key, else ignore. */
386: if (c->flags & CLIENT_REPEAT) {
387: c->flags &= ~CLIENT_REPEAT;
388: if (isprefix)
389: c->flags |= CLIENT_PREFIX;
1.30 nicm 390: else if (!(c->flags & CLIENT_READONLY))
1.31 nicm 391: window_pane_key(wp, c->session, key);
1.18 nicm 392: }
393: return;
394: }
395:
396: /* If already repeating, but this key can't repeat, skip it. */
397: if (c->flags & CLIENT_REPEAT && !bd->can_repeat) {
398: c->flags &= ~CLIENT_REPEAT;
399: if (isprefix)
400: c->flags |= CLIENT_PREFIX;
1.30 nicm 401: else if (!(c->flags & CLIENT_READONLY))
1.31 nicm 402: window_pane_key(wp, c->session, key);
1.18 nicm 403: return;
404: }
405:
406: /* If this key can repeat, reset the repeat flags and timer. */
407: xtimeout = options_get_number(&c->session->options, "repeat-time");
408: if (xtimeout != 0 && bd->can_repeat) {
409: c->flags |= CLIENT_PREFIX|CLIENT_REPEAT;
1.25 nicm 410:
1.18 nicm 411: tv.tv_sec = xtimeout / 1000;
412: tv.tv_usec = (xtimeout % 1000) * 1000L;
413: evtimer_del(&c->repeat_timer);
414: evtimer_add(&c->repeat_timer, &tv);
415: }
416:
417: /* Dispatch the command. */
418: key_bindings_dispatch(bd, c);
419: }
420:
1.2 nicm 421: /* Client functions that need to happen every loop. */
422: void
423: server_client_loop(void)
424: {
425: struct client *c;
426: struct window *w;
427: struct window_pane *wp;
428: u_int i;
429:
430: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
431: c = ARRAY_ITEM(&clients, i);
1.36 nicm 432: if (c == NULL)
1.2 nicm 433: continue;
434:
1.36 nicm 435: server_client_check_exit(c);
436: if (c->session != NULL) {
437: server_client_check_redraw(c);
438: server_client_reset_state(c);
439: }
1.2 nicm 440: }
441:
442: /*
443: * Any windows will have been redrawn as part of clients, so clear
444: * their flags now.
445: */
446: for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
447: w = ARRAY_ITEM(&windows, i);
448: if (w == NULL)
449: continue;
450:
451: w->flags &= ~WINDOW_REDRAW;
452: TAILQ_FOREACH(wp, &w->panes, entry)
453: wp->flags &= ~PANE_REDRAW;
454: }
455: }
456:
1.18 nicm 457: /*
458: * Update cursor position and mode settings. The scroll region and attributes
459: * are cleared when idle (waiting for an event) as this is the most likely time
460: * a user may interrupt tmux, for example with ~^Z in ssh(1). This is a
461: * compromise between excessive resets and likelihood of an interrupt.
462: *
463: * tty_region/tty_reset/tty_update_mode already take care of not resetting
464: * things that are already in their default state.
465: */
1.1 nicm 466: void
1.18 nicm 467: server_client_reset_state(struct client *c)
1.1 nicm 468: {
1.18 nicm 469: struct window *w = c->session->curw->window;
470: struct window_pane *wp = w->active;
471: struct screen *s = wp->screen;
472: struct options *oo = &c->session->options;
1.54 nicm 473: struct options *wo = &w->options;
1.18 nicm 474: int status, mode;
1.1 nicm 475:
476: tty_region(&c->tty, 0, c->tty.sy - 1);
477:
478: status = options_get_number(oo, "status");
479: if (!window_pane_visible(wp) || wp->yoff + s->cy >= c->tty.sy - status)
480: tty_cursor(&c->tty, 0, 0);
481: else
482: tty_cursor(&c->tty, wp->xoff + s->cx, wp->yoff + s->cy);
483:
1.50 nicm 484: /*
1.57 ! nicm 485: * Resizing panes with the mouse requires at least button mode to give
! 486: * a smooth appearance.
! 487: */
! 488: mode = s->mode;
! 489: if ((c->last_mouse.b & MOUSE_RESIZE_PANE) &&
! 490: !(mode & (MODE_MOUSE_BUTTON|MODE_MOUSE_ANY)))
! 491: mode |= MODE_MOUSE_BUTTON;
! 492:
! 493: /*
1.50 nicm 494: * Any mode will do for mouse-select-pane, but set standard mode if
495: * none.
496: */
1.54 nicm 497: if ((mode & ALL_MOUSE_MODES) == 0) {
498: if (TAILQ_NEXT(TAILQ_FIRST(&w->panes), entry) != NULL &&
1.55 nicm 499: options_get_number(oo, "mouse-select-pane"))
1.57 ! nicm 500: mode |= MODE_MOUSE_STANDARD;
! 501: else if (options_get_number(oo, "mouse-resize-pane"))
1.54 nicm 502: mode |= MODE_MOUSE_STANDARD;
503: else if (options_get_number(oo, "mouse-select-window"))
504: mode |= MODE_MOUSE_STANDARD;
505: else if (options_get_number(wo, "mode-mouse"))
506: mode |= MODE_MOUSE_STANDARD;
507: }
1.48 nicm 508:
509: /*
510: * Set UTF-8 mouse input if required. If the terminal is UTF-8, the
511: * user has set mouse-utf8 and any mouse mode is in effect, turn on
512: * UTF-8 mouse input. If the receiving terminal hasn't requested it
513: * (that is, it isn't in s->mode), then it'll be converted in
514: * input_mouse.
515: */
516: if ((c->tty.flags & TTY_UTF8) &&
517: (mode & ALL_MOUSE_MODES) && options_get_number(oo, "mouse-utf8"))
518: mode |= MODE_MOUSE_UTF8;
519: else
520: mode &= ~MODE_MOUSE_UTF8;
521:
522: /* Set the terminal mode and reset attributes. */
1.1 nicm 523: tty_update_mode(&c->tty, mode);
524: tty_reset(&c->tty);
1.17 nicm 525: }
526:
527: /* Repeat time callback. */
1.24 nicm 528: /* ARGSUSED */
1.17 nicm 529: void
530: server_client_repeat_timer(unused int fd, unused short events, void *data)
531: {
532: struct client *c = data;
533:
534: if (c->flags & CLIENT_REPEAT)
535: c->flags &= ~(CLIENT_PREFIX|CLIENT_REPEAT);
1.1 nicm 536: }
537:
1.36 nicm 538: /* Check if client should be exited. */
539: void
540: server_client_check_exit(struct client *c)
541: {
542: struct msg_exit_data exitdata;
543:
544: if (!(c->flags & CLIENT_EXIT))
545: return;
546:
547: if (c->stdout_fd != -1 && c->stdout_event != NULL &&
548: EVBUFFER_LENGTH(c->stdout_event->output) != 0)
549: return;
550: if (c->stderr_fd != -1 && c->stderr_event != NULL &&
551: EVBUFFER_LENGTH(c->stderr_event->output) != 0)
552: return;
553:
554: exitdata.retcode = c->retcode;
555: server_write_client(c, MSG_EXIT, &exitdata, sizeof exitdata);
556:
557: c->flags &= ~CLIENT_EXIT;
558: }
559:
1.38 nicm 560: /*
561: * Check if the client should backoff. During backoff, data from external
562: * programs is not written to the terminal. When the existing data drains, the
563: * client is redrawn.
564: *
565: * There are two backoff phases - both the tty and client have backoff flags -
566: * the first to allow existing data to drain and the latter to ensure backoff
567: * is disabled until the redraw has finished and prevent the redraw triggering
568: * another backoff.
569: */
570: void
571: server_client_check_backoff(struct client *c)
572: {
573: struct tty *tty = &c->tty;
574: size_t used;
575:
576: used = EVBUFFER_LENGTH(tty->event->output);
577:
578: /*
579: * If in the second backoff phase (redrawing), don't check backoff
580: * until the redraw has completed (or enough of it to drop below the
581: * backoff threshold).
582: */
583: if (c->flags & CLIENT_BACKOFF) {
584: if (used > BACKOFF_THRESHOLD)
585: return;
586: c->flags &= ~CLIENT_BACKOFF;
587: return;
588: }
589:
590: /* Once drained, allow data through again and schedule redraw. */
591: if (tty->flags & TTY_BACKOFF) {
592: if (used != 0)
593: return;
594: tty->flags &= ~TTY_BACKOFF;
595: c->flags |= (CLIENT_BACKOFF|CLIENT_REDRAWWINDOW|CLIENT_STATUS);
596: return;
597: }
598:
599: /* If too much data, start backoff. */
600: if (used > BACKOFF_THRESHOLD)
601: tty->flags |= TTY_BACKOFF;
602: }
603:
1.1 nicm 604: /* Check for client redraws. */
605: void
606: server_client_check_redraw(struct client *c)
607: {
608: struct session *s = c->session;
609: struct window_pane *wp;
610: int flags, redraw;
611:
612: flags = c->tty.flags & TTY_FREEZE;
613: c->tty.flags &= ~TTY_FREEZE;
614:
615: if (c->flags & (CLIENT_REDRAW|CLIENT_STATUS)) {
616: if (options_get_number(&s->options, "set-titles"))
617: server_client_set_title(c);
1.12 nicm 618:
1.1 nicm 619: if (c->message_string != NULL)
620: redraw = status_message_redraw(c);
621: else if (c->prompt_string != NULL)
622: redraw = status_prompt_redraw(c);
623: else
624: redraw = status_redraw(c);
625: if (!redraw)
626: c->flags &= ~CLIENT_STATUS;
627: }
628:
629: if (c->flags & CLIENT_REDRAW) {
1.27 nicm 630: screen_redraw_screen(c, 0, 0);
631: c->flags &= ~(CLIENT_STATUS|CLIENT_BORDERS);
1.38 nicm 632: } else if (c->flags & CLIENT_REDRAWWINDOW) {
633: TAILQ_FOREACH(wp, &c->session->curw->window->panes, entry)
634: screen_redraw_pane(c, wp);
635: c->flags &= ~CLIENT_REDRAWWINDOW;
1.1 nicm 636: } else {
637: TAILQ_FOREACH(wp, &c->session->curw->window->panes, entry) {
638: if (wp->flags & PANE_REDRAW)
639: screen_redraw_pane(c, wp);
640: }
641: }
642:
1.27 nicm 643: if (c->flags & CLIENT_BORDERS)
644: screen_redraw_screen(c, 0, 1);
645:
1.1 nicm 646: if (c->flags & CLIENT_STATUS)
1.27 nicm 647: screen_redraw_screen(c, 1, 0);
1.1 nicm 648:
649: c->tty.flags |= flags;
650:
1.27 nicm 651: c->flags &= ~(CLIENT_REDRAW|CLIENT_STATUS|CLIENT_BORDERS);
1.1 nicm 652: }
653:
654: /* Set client title. */
655: void
656: server_client_set_title(struct client *c)
657: {
658: struct session *s = c->session;
659: const char *template;
660: char *title;
661:
662: template = options_get_string(&s->options, "set-titles-string");
1.25 nicm 663:
1.52 nicm 664: title = status_replace(c, NULL, NULL, NULL, template, time(NULL), 1);
1.1 nicm 665: if (c->title == NULL || strcmp(title, c->title) != 0) {
666: if (c->title != NULL)
667: xfree(c->title);
668: c->title = xstrdup(title);
669: tty_set_title(&c->tty, c->title);
670: }
671: xfree(title);
672: }
673:
1.36 nicm 674: /*
675: * Error callback for client stdin. Caller must increase reference count when
676: * enabling event!
677: */
678: void
679: server_client_in_callback(
680: unused struct bufferevent *bufev, unused short what, void *data)
681: {
682: struct client *c = data;
683:
684: c->references--;
685: if (c->flags & CLIENT_DEAD)
686: return;
687:
688: bufferevent_disable(c->stdin_event, EV_READ|EV_WRITE);
1.49 nicm 689: setblocking(c->stdin_fd, 1);
1.36 nicm 690: close(c->stdin_fd);
691: c->stdin_fd = -1;
692:
693: if (c->stdin_callback != NULL)
694: c->stdin_callback(c, c->stdin_data);
695: }
696:
697: /* Error callback for client stdout. */
698: void
699: server_client_out_callback(
700: unused struct bufferevent *bufev, unused short what, unused void *data)
701: {
702: struct client *c = data;
703:
704: bufferevent_disable(c->stdout_event, EV_READ|EV_WRITE);
1.49 nicm 705: setblocking(c->stdout_fd, 1);
1.36 nicm 706: close(c->stdout_fd);
707: c->stdout_fd = -1;
708: }
709:
710: /* Error callback for client stderr. */
711: void
712: server_client_err_callback(
713: unused struct bufferevent *bufev, unused short what, unused void *data)
714: {
715: struct client *c = data;
716:
717: bufferevent_disable(c->stderr_event, EV_READ|EV_WRITE);
1.49 nicm 718: setblocking(c->stderr_fd, 1);
1.36 nicm 719: close(c->stderr_fd);
720: c->stderr_fd = -1;
721: }
722:
1.1 nicm 723: /* Dispatch message from client. */
724: int
725: server_client_msg_dispatch(struct client *c)
726: {
727: struct imsg imsg;
728: struct msg_command_data commanddata;
729: struct msg_identify_data identifydata;
730: struct msg_environ_data environdata;
731: ssize_t n, datalen;
732:
1.8 deraadt 733: if ((n = imsg_read(&c->ibuf)) == -1 || n == 0)
734: return (-1);
1.1 nicm 735:
736: for (;;) {
737: if ((n = imsg_get(&c->ibuf, &imsg)) == -1)
738: return (-1);
739: if (n == 0)
740: return (0);
741: datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
742:
743: if (imsg.hdr.peerid != PROTOCOL_VERSION) {
744: server_write_client(c, MSG_VERSION, NULL, 0);
745: c->flags |= CLIENT_BAD;
746: imsg_free(&imsg);
747: continue;
748: }
749:
750: log_debug("got %d from client %d", imsg.hdr.type, c->ibuf.fd);
751: switch (imsg.hdr.type) {
752: case MSG_COMMAND:
753: if (datalen != sizeof commanddata)
754: fatalx("bad MSG_COMMAND size");
755: memcpy(&commanddata, imsg.data, sizeof commanddata);
756:
757: server_client_msg_command(c, &commanddata);
758: break;
759: case MSG_IDENTIFY:
760: if (datalen != sizeof identifydata)
761: fatalx("bad MSG_IDENTIFY size");
762: if (imsg.fd == -1)
763: fatalx("MSG_IDENTIFY missing fd");
764: memcpy(&identifydata, imsg.data, sizeof identifydata);
765:
1.39 nicm 766: c->stdin_fd = imsg.fd;
1.37 nicm 767: c->stdin_event = bufferevent_new(c->stdin_fd,
768: NULL, NULL, server_client_in_callback, c);
1.36 nicm 769: if (c->stdin_event == NULL)
770: fatalx("failed to create stdin event");
1.49 nicm 771: setblocking(c->stdin_fd, 0);
1.36 nicm 772:
1.1 nicm 773: server_client_msg_identify(c, &identifydata, imsg.fd);
774: break;
1.33 nicm 775: case MSG_STDOUT:
776: if (datalen != 0)
777: fatalx("bad MSG_STDOUT size");
778: if (imsg.fd == -1)
779: fatalx("MSG_STDOUT missing fd");
780:
1.36 nicm 781: c->stdout_fd = imsg.fd;
1.37 nicm 782: c->stdout_event = bufferevent_new(c->stdout_fd,
783: NULL, NULL, server_client_out_callback, c);
1.36 nicm 784: if (c->stdout_event == NULL)
785: fatalx("failed to create stdout event");
1.49 nicm 786: setblocking(c->stdout_fd, 0);
1.36 nicm 787:
1.33 nicm 788: break;
789: case MSG_STDERR:
790: if (datalen != 0)
791: fatalx("bad MSG_STDERR size");
792: if (imsg.fd == -1)
793: fatalx("MSG_STDERR missing fd");
794:
1.36 nicm 795: c->stderr_fd = imsg.fd;
1.37 nicm 796: c->stderr_event = bufferevent_new(c->stderr_fd,
797: NULL, NULL, server_client_err_callback, c);
1.36 nicm 798: if (c->stderr_event == NULL)
799: fatalx("failed to create stderr event");
1.49 nicm 800: setblocking(c->stderr_fd, 0);
1.36 nicm 801:
1.33 nicm 802: break;
1.1 nicm 803: case MSG_RESIZE:
804: if (datalen != 0)
805: fatalx("bad MSG_RESIZE size");
806:
1.32 nicm 807: if (tty_resize(&c->tty)) {
808: recalculate_sizes();
809: server_redraw_client(c);
810: }
1.1 nicm 811: break;
812: case MSG_EXITING:
813: if (datalen != 0)
814: fatalx("bad MSG_EXITING size");
815:
816: c->session = NULL;
817: tty_close(&c->tty);
818: server_write_client(c, MSG_EXITED, NULL, 0);
819: break;
820: case MSG_WAKEUP:
821: case MSG_UNLOCK:
822: if (datalen != 0)
823: fatalx("bad MSG_WAKEUP size");
824:
825: if (!(c->flags & CLIENT_SUSPENDED))
826: break;
827: c->flags &= ~CLIENT_SUSPENDED;
1.10 nicm 828:
1.11 nicm 829: if (gettimeofday(&c->activity_time, NULL) != 0)
830: fatal("gettimeofday");
1.47 nicm 831: if (c->session != NULL)
832: session_update_activity(c->session);
1.10 nicm 833:
1.1 nicm 834: tty_start_tty(&c->tty);
835: server_redraw_client(c);
836: recalculate_sizes();
837: break;
838: case MSG_ENVIRON:
839: if (datalen != sizeof environdata)
840: fatalx("bad MSG_ENVIRON size");
841: memcpy(&environdata, imsg.data, sizeof environdata);
842:
843: environdata.var[(sizeof environdata.var) - 1] = '\0';
844: if (strchr(environdata.var, '=') != NULL)
845: environ_put(&c->environ, environdata.var);
846: break;
847: case MSG_SHELL:
848: if (datalen != 0)
849: fatalx("bad MSG_SHELL size");
850:
851: server_client_msg_shell(c);
852: break;
853: default:
854: fatalx("unexpected message");
855: }
856:
857: imsg_free(&imsg);
858: }
859: }
860:
861: /* Callback to send error message to client. */
862: void printflike2
863: server_client_msg_error(struct cmd_ctx *ctx, const char *fmt, ...)
864: {
1.33 nicm 865: va_list ap;
1.1 nicm 866:
867: va_start(ap, fmt);
1.36 nicm 868: evbuffer_add_vprintf(ctx->cmdclient->stderr_event->output, fmt, ap);
1.1 nicm 869: va_end(ap);
870:
1.36 nicm 871: bufferevent_write(ctx->cmdclient->stderr_event, "\n", 1);
1.34 nicm 872: ctx->cmdclient->retcode = 1;
1.1 nicm 873: }
874:
875: /* Callback to send print message to client. */
876: void printflike2
877: server_client_msg_print(struct cmd_ctx *ctx, const char *fmt, ...)
878: {
1.33 nicm 879: va_list ap;
1.1 nicm 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: /* Callback to send print message to client, if not quiet. */
889: void printflike2
890: server_client_msg_info(struct cmd_ctx *ctx, const char *fmt, ...)
891: {
1.33 nicm 892: va_list ap;
1.1 nicm 893:
1.26 nicm 894: if (options_get_number(&global_options, "quiet"))
1.1 nicm 895: return;
896:
897: va_start(ap, fmt);
1.36 nicm 898: evbuffer_add_vprintf(ctx->cmdclient->stdout_event->output, fmt, ap);
1.1 nicm 899: va_end(ap);
900:
1.36 nicm 901: bufferevent_write(ctx->cmdclient->stdout_event, "\n", 1);
1.1 nicm 902: }
903:
904: /* Handle command message. */
905: void
906: server_client_msg_command(struct client *c, struct msg_command_data *data)
907: {
1.36 nicm 908: struct cmd_ctx ctx;
909: struct cmd_list *cmdlist = NULL;
910: int argc;
911: char **argv, *cause;
1.1 nicm 912:
913: ctx.error = server_client_msg_error;
914: ctx.print = server_client_msg_print;
915: ctx.info = server_client_msg_info;
916:
917: ctx.msgdata = data;
918: ctx.curclient = NULL;
919:
920: ctx.cmdclient = c;
921:
922: argc = data->argc;
923: data->argv[(sizeof data->argv) - 1] = '\0';
924: if (cmd_unpack_argv(data->argv, sizeof data->argv, argc, &argv) != 0) {
925: server_client_msg_error(&ctx, "command too long");
926: goto error;
927: }
928:
929: if (argc == 0) {
930: argc = 1;
931: argv = xcalloc(1, sizeof *argv);
932: *argv = xstrdup("new-session");
933: }
934:
935: if ((cmdlist = cmd_list_parse(argc, argv, &cause)) == NULL) {
936: server_client_msg_error(&ctx, "%s", cause);
937: cmd_free_argv(argc, argv);
938: goto error;
939: }
940: cmd_free_argv(argc, argv);
941:
1.36 nicm 942: if (cmd_list_exec(cmdlist, &ctx) != 1)
943: c->flags |= CLIENT_EXIT;
1.1 nicm 944: cmd_list_free(cmdlist);
945: return;
946:
947: error:
948: if (cmdlist != NULL)
949: cmd_list_free(cmdlist);
1.36 nicm 950: c->flags |= CLIENT_EXIT;
1.1 nicm 951: }
952:
953: /* Handle identify message. */
954: void
955: server_client_msg_identify(
956: struct client *c, struct msg_identify_data *data, int fd)
957: {
1.33 nicm 958: int tty_fd;
959:
1.1 nicm 960: c->cwd = NULL;
961: data->cwd[(sizeof data->cwd) - 1] = '\0';
962: if (*data->cwd != '\0')
963: c->cwd = xstrdup(data->cwd);
964:
1.33 nicm 965: if (!isatty(fd))
966: return;
967: if ((tty_fd = dup(fd)) == -1)
968: fatal("dup failed");
1.1 nicm 969: data->term[(sizeof data->term) - 1] = '\0';
1.33 nicm 970: tty_init(&c->tty, tty_fd, data->term);
1.1 nicm 971: if (data->flags & IDENTIFY_UTF8)
972: c->tty.flags |= TTY_UTF8;
973: if (data->flags & IDENTIFY_256COLOURS)
974: c->tty.term_flags |= TERM_256COLOURS;
975: else if (data->flags & IDENTIFY_88COLOURS)
976: c->tty.term_flags |= TERM_88COLOURS;
1.18 nicm 977: c->tty.key_callback = server_client_handle_key;
978: c->tty.key_data = c;
1.1 nicm 979:
980: tty_resize(&c->tty);
981:
982: c->flags |= CLIENT_TERMINAL;
983: }
984:
985: /* Handle shell message. */
986: void
987: server_client_msg_shell(struct client *c)
988: {
989: struct msg_shell_data data;
990: const char *shell;
1.25 nicm 991:
1.1 nicm 992: shell = options_get_string(&global_s_options, "default-shell");
993:
994: if (*shell == '\0' || areshell(shell))
995: shell = _PATH_BSHELL;
996: if (strlcpy(data.shell, shell, sizeof data.shell) >= sizeof data.shell)
997: strlcpy(data.shell, _PATH_BSHELL, sizeof data.shell);
1.25 nicm 998:
1.1 nicm 999: server_write_client(c, MSG_SHELL, &data, sizeof data);
1000: c->flags |= CLIENT_BAD; /* it will die after exec */
1001: }
![[BACK]](/icons/back.gif){kind=icon}
Return to server-client.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / tmux