Annotation of src/usr.bin/tmux/server-client.c, Revision 1.60
1.60 ! nicm 1: /* $OpenBSD: server-client.c,v 1.59 2011/05/20 19:03:58 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")) {
1.58 nicm 334: if (mouse->b == MOUSE_UP &&
335: c->last_mouse.b != MOUSE_UP) {
1.56 nicm 336: status_set_window_at(c, mouse->x);
337: return;
338: }
339: if (mouse->b & MOUSE_45) {
340: if ((mouse->b & MOUSE_BUTTON) == MOUSE_1) {
341: session_previous(c->session, 0);
342: server_redraw_session(s);
343: }
344: if ((mouse->b & MOUSE_BUTTON) == MOUSE_2) {
345: session_next(c->session, 0);
346: server_redraw_session(s);
347: }
348: return;
349: }
1.53 nicm 350: }
1.57 nicm 351: if (options_get_number(oo, "mouse-resize-pane"))
352: layout_resize_pane_mouse(c, mouse);
353: memcpy(&c->last_mouse, mouse, sizeof c->last_mouse);
1.31 nicm 354: window_pane_mouse(wp, c->session, mouse);
1.18 nicm 355: return;
356: }
357:
358: /* Is this a prefix key? */
359: keylist = options_get_data(&c->session->options, "prefix");
360: isprefix = 0;
361: for (i = 0; i < ARRAY_LENGTH(keylist); i++) {
362: if (key == ARRAY_ITEM(keylist, i)) {
363: isprefix = 1;
364: break;
365: }
366: }
367:
368: /* No previous prefix key. */
369: if (!(c->flags & CLIENT_PREFIX)) {
370: if (isprefix)
371: c->flags |= CLIENT_PREFIX;
372: else {
373: /* Try as a non-prefix key binding. */
1.30 nicm 374: if ((bd = key_bindings_lookup(key)) == NULL) {
375: if (!(c->flags & CLIENT_READONLY))
1.31 nicm 376: window_pane_key(wp, c->session, key);
1.30 nicm 377: } else
1.18 nicm 378: key_bindings_dispatch(bd, c);
379: }
380: return;
381: }
382:
383: /* Prefix key already pressed. Reset prefix and lookup key. */
384: c->flags &= ~CLIENT_PREFIX;
385: if ((bd = key_bindings_lookup(key | KEYC_PREFIX)) == NULL) {
386: /* If repeating, treat this as a key, else ignore. */
387: if (c->flags & CLIENT_REPEAT) {
388: c->flags &= ~CLIENT_REPEAT;
389: if (isprefix)
390: c->flags |= CLIENT_PREFIX;
1.30 nicm 391: else if (!(c->flags & CLIENT_READONLY))
1.31 nicm 392: window_pane_key(wp, c->session, key);
1.18 nicm 393: }
394: return;
395: }
396:
397: /* If already repeating, but this key can't repeat, skip it. */
398: if (c->flags & CLIENT_REPEAT && !bd->can_repeat) {
399: c->flags &= ~CLIENT_REPEAT;
400: if (isprefix)
401: c->flags |= CLIENT_PREFIX;
1.30 nicm 402: else if (!(c->flags & CLIENT_READONLY))
1.31 nicm 403: window_pane_key(wp, c->session, key);
1.18 nicm 404: return;
405: }
406:
407: /* If this key can repeat, reset the repeat flags and timer. */
408: xtimeout = options_get_number(&c->session->options, "repeat-time");
409: if (xtimeout != 0 && bd->can_repeat) {
410: c->flags |= CLIENT_PREFIX|CLIENT_REPEAT;
1.25 nicm 411:
1.18 nicm 412: tv.tv_sec = xtimeout / 1000;
413: tv.tv_usec = (xtimeout % 1000) * 1000L;
414: evtimer_del(&c->repeat_timer);
415: evtimer_add(&c->repeat_timer, &tv);
416: }
417:
418: /* Dispatch the command. */
419: key_bindings_dispatch(bd, c);
420: }
421:
1.2 nicm 422: /* Client functions that need to happen every loop. */
423: void
424: server_client_loop(void)
425: {
426: struct client *c;
427: struct window *w;
428: struct window_pane *wp;
429: u_int i;
430:
431: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
432: c = ARRAY_ITEM(&clients, i);
1.36 nicm 433: if (c == NULL)
1.2 nicm 434: continue;
435:
1.36 nicm 436: server_client_check_exit(c);
437: if (c->session != NULL) {
438: server_client_check_redraw(c);
439: server_client_reset_state(c);
440: }
1.2 nicm 441: }
442:
443: /*
444: * Any windows will have been redrawn as part of clients, so clear
445: * their flags now.
446: */
447: for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
448: w = ARRAY_ITEM(&windows, i);
449: if (w == NULL)
450: continue;
451:
452: w->flags &= ~WINDOW_REDRAW;
453: TAILQ_FOREACH(wp, &w->panes, entry)
454: wp->flags &= ~PANE_REDRAW;
455: }
456: }
457:
1.18 nicm 458: /*
459: * Update cursor position and mode settings. The scroll region and attributes
460: * are cleared when idle (waiting for an event) as this is the most likely time
461: * a user may interrupt tmux, for example with ~^Z in ssh(1). This is a
462: * compromise between excessive resets and likelihood of an interrupt.
463: *
464: * tty_region/tty_reset/tty_update_mode already take care of not resetting
465: * things that are already in their default state.
466: */
1.1 nicm 467: void
1.18 nicm 468: server_client_reset_state(struct client *c)
1.1 nicm 469: {
1.18 nicm 470: struct window *w = c->session->curw->window;
471: struct window_pane *wp = w->active;
472: struct screen *s = wp->screen;
473: struct options *oo = &c->session->options;
1.54 nicm 474: struct options *wo = &w->options;
1.18 nicm 475: int status, mode;
1.60 ! nicm 476:
! 477: if (c->flags & CLIENT_SUSPENDED)
! 478: return;
1.1 nicm 479:
480: tty_region(&c->tty, 0, c->tty.sy - 1);
481:
482: status = options_get_number(oo, "status");
483: if (!window_pane_visible(wp) || wp->yoff + s->cy >= c->tty.sy - status)
484: tty_cursor(&c->tty, 0, 0);
485: else
486: tty_cursor(&c->tty, wp->xoff + s->cx, wp->yoff + s->cy);
487:
1.50 nicm 488: /*
1.57 nicm 489: * Resizing panes with the mouse requires at least button mode to give
490: * a smooth appearance.
491: */
492: mode = s->mode;
493: if ((c->last_mouse.b & MOUSE_RESIZE_PANE) &&
494: !(mode & (MODE_MOUSE_BUTTON|MODE_MOUSE_ANY)))
495: mode |= MODE_MOUSE_BUTTON;
496:
497: /*
1.50 nicm 498: * Any mode will do for mouse-select-pane, but set standard mode if
499: * none.
500: */
1.54 nicm 501: if ((mode & ALL_MOUSE_MODES) == 0) {
502: if (TAILQ_NEXT(TAILQ_FIRST(&w->panes), entry) != NULL &&
1.55 nicm 503: options_get_number(oo, "mouse-select-pane"))
1.57 nicm 504: mode |= MODE_MOUSE_STANDARD;
505: else if (options_get_number(oo, "mouse-resize-pane"))
1.54 nicm 506: mode |= MODE_MOUSE_STANDARD;
507: else if (options_get_number(oo, "mouse-select-window"))
508: mode |= MODE_MOUSE_STANDARD;
509: else if (options_get_number(wo, "mode-mouse"))
510: mode |= MODE_MOUSE_STANDARD;
511: }
1.48 nicm 512:
513: /*
514: * Set UTF-8 mouse input if required. If the terminal is UTF-8, the
515: * user has set mouse-utf8 and any mouse mode is in effect, turn on
516: * UTF-8 mouse input. If the receiving terminal hasn't requested it
517: * (that is, it isn't in s->mode), then it'll be converted in
518: * input_mouse.
519: */
520: if ((c->tty.flags & TTY_UTF8) &&
521: (mode & ALL_MOUSE_MODES) && options_get_number(oo, "mouse-utf8"))
522: mode |= MODE_MOUSE_UTF8;
523: else
524: mode &= ~MODE_MOUSE_UTF8;
525:
526: /* Set the terminal mode and reset attributes. */
1.59 nicm 527: tty_update_mode(&c->tty, mode, s);
1.1 nicm 528: tty_reset(&c->tty);
1.17 nicm 529: }
530:
531: /* Repeat time callback. */
1.24 nicm 532: /* ARGSUSED */
1.17 nicm 533: void
534: server_client_repeat_timer(unused int fd, unused short events, void *data)
535: {
536: struct client *c = data;
537:
538: if (c->flags & CLIENT_REPEAT)
539: c->flags &= ~(CLIENT_PREFIX|CLIENT_REPEAT);
1.1 nicm 540: }
541:
1.36 nicm 542: /* Check if client should be exited. */
543: void
544: server_client_check_exit(struct client *c)
545: {
546: struct msg_exit_data exitdata;
547:
548: if (!(c->flags & CLIENT_EXIT))
549: return;
550:
551: if (c->stdout_fd != -1 && c->stdout_event != NULL &&
552: EVBUFFER_LENGTH(c->stdout_event->output) != 0)
553: return;
554: if (c->stderr_fd != -1 && c->stderr_event != NULL &&
555: EVBUFFER_LENGTH(c->stderr_event->output) != 0)
556: return;
557:
558: exitdata.retcode = c->retcode;
559: server_write_client(c, MSG_EXIT, &exitdata, sizeof exitdata);
560:
561: c->flags &= ~CLIENT_EXIT;
562: }
563:
1.38 nicm 564: /*
565: * Check if the client should backoff. During backoff, data from external
566: * programs is not written to the terminal. When the existing data drains, the
567: * client is redrawn.
568: *
569: * There are two backoff phases - both the tty and client have backoff flags -
570: * the first to allow existing data to drain and the latter to ensure backoff
571: * is disabled until the redraw has finished and prevent the redraw triggering
572: * another backoff.
573: */
574: void
575: server_client_check_backoff(struct client *c)
576: {
577: struct tty *tty = &c->tty;
578: size_t used;
579:
580: used = EVBUFFER_LENGTH(tty->event->output);
581:
582: /*
583: * If in the second backoff phase (redrawing), don't check backoff
584: * until the redraw has completed (or enough of it to drop below the
585: * backoff threshold).
586: */
587: if (c->flags & CLIENT_BACKOFF) {
588: if (used > BACKOFF_THRESHOLD)
589: return;
590: c->flags &= ~CLIENT_BACKOFF;
591: return;
592: }
593:
594: /* Once drained, allow data through again and schedule redraw. */
595: if (tty->flags & TTY_BACKOFF) {
596: if (used != 0)
597: return;
598: tty->flags &= ~TTY_BACKOFF;
599: c->flags |= (CLIENT_BACKOFF|CLIENT_REDRAWWINDOW|CLIENT_STATUS);
600: return;
601: }
602:
603: /* If too much data, start backoff. */
604: if (used > BACKOFF_THRESHOLD)
605: tty->flags |= TTY_BACKOFF;
606: }
607:
1.1 nicm 608: /* Check for client redraws. */
609: void
610: server_client_check_redraw(struct client *c)
611: {
612: struct session *s = c->session;
613: struct window_pane *wp;
614: int flags, redraw;
615:
616: flags = c->tty.flags & TTY_FREEZE;
617: c->tty.flags &= ~TTY_FREEZE;
618:
619: if (c->flags & (CLIENT_REDRAW|CLIENT_STATUS)) {
620: if (options_get_number(&s->options, "set-titles"))
621: server_client_set_title(c);
1.12 nicm 622:
1.1 nicm 623: if (c->message_string != NULL)
624: redraw = status_message_redraw(c);
625: else if (c->prompt_string != NULL)
626: redraw = status_prompt_redraw(c);
627: else
628: redraw = status_redraw(c);
629: if (!redraw)
630: c->flags &= ~CLIENT_STATUS;
631: }
632:
633: if (c->flags & CLIENT_REDRAW) {
1.27 nicm 634: screen_redraw_screen(c, 0, 0);
635: c->flags &= ~(CLIENT_STATUS|CLIENT_BORDERS);
1.38 nicm 636: } else if (c->flags & CLIENT_REDRAWWINDOW) {
637: TAILQ_FOREACH(wp, &c->session->curw->window->panes, entry)
638: screen_redraw_pane(c, wp);
639: c->flags &= ~CLIENT_REDRAWWINDOW;
1.1 nicm 640: } else {
641: TAILQ_FOREACH(wp, &c->session->curw->window->panes, entry) {
642: if (wp->flags & PANE_REDRAW)
643: screen_redraw_pane(c, wp);
644: }
645: }
646:
1.27 nicm 647: if (c->flags & CLIENT_BORDERS)
648: screen_redraw_screen(c, 0, 1);
649:
1.1 nicm 650: if (c->flags & CLIENT_STATUS)
1.27 nicm 651: screen_redraw_screen(c, 1, 0);
1.1 nicm 652:
653: c->tty.flags |= flags;
654:
1.27 nicm 655: c->flags &= ~(CLIENT_REDRAW|CLIENT_STATUS|CLIENT_BORDERS);
1.1 nicm 656: }
657:
658: /* Set client title. */
659: void
660: server_client_set_title(struct client *c)
661: {
662: struct session *s = c->session;
663: const char *template;
664: char *title;
665:
666: template = options_get_string(&s->options, "set-titles-string");
1.25 nicm 667:
1.52 nicm 668: title = status_replace(c, NULL, NULL, NULL, template, time(NULL), 1);
1.1 nicm 669: if (c->title == NULL || strcmp(title, c->title) != 0) {
670: if (c->title != NULL)
671: xfree(c->title);
672: c->title = xstrdup(title);
673: tty_set_title(&c->tty, c->title);
674: }
675: xfree(title);
676: }
677:
1.36 nicm 678: /*
679: * Error callback for client stdin. Caller must increase reference count when
680: * enabling event!
681: */
682: void
683: server_client_in_callback(
684: unused struct bufferevent *bufev, unused short what, void *data)
685: {
686: struct client *c = data;
687:
688: c->references--;
689: if (c->flags & CLIENT_DEAD)
690: return;
691:
692: bufferevent_disable(c->stdin_event, EV_READ|EV_WRITE);
1.49 nicm 693: setblocking(c->stdin_fd, 1);
1.36 nicm 694: close(c->stdin_fd);
695: c->stdin_fd = -1;
696:
697: if (c->stdin_callback != NULL)
698: c->stdin_callback(c, c->stdin_data);
699: }
700:
701: /* Error callback for client stdout. */
702: void
703: server_client_out_callback(
704: unused struct bufferevent *bufev, unused short what, unused void *data)
705: {
706: struct client *c = data;
707:
708: bufferevent_disable(c->stdout_event, EV_READ|EV_WRITE);
1.49 nicm 709: setblocking(c->stdout_fd, 1);
1.36 nicm 710: close(c->stdout_fd);
711: c->stdout_fd = -1;
712: }
713:
714: /* Error callback for client stderr. */
715: void
716: server_client_err_callback(
717: unused struct bufferevent *bufev, unused short what, unused void *data)
718: {
719: struct client *c = data;
720:
721: bufferevent_disable(c->stderr_event, EV_READ|EV_WRITE);
1.49 nicm 722: setblocking(c->stderr_fd, 1);
1.36 nicm 723: close(c->stderr_fd);
724: c->stderr_fd = -1;
725: }
726:
1.1 nicm 727: /* Dispatch message from client. */
728: int
729: server_client_msg_dispatch(struct client *c)
730: {
731: struct imsg imsg;
732: struct msg_command_data commanddata;
733: struct msg_identify_data identifydata;
734: struct msg_environ_data environdata;
735: ssize_t n, datalen;
736:
1.8 deraadt 737: if ((n = imsg_read(&c->ibuf)) == -1 || n == 0)
738: return (-1);
1.1 nicm 739:
740: for (;;) {
741: if ((n = imsg_get(&c->ibuf, &imsg)) == -1)
742: return (-1);
743: if (n == 0)
744: return (0);
745: datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
746:
747: if (imsg.hdr.peerid != PROTOCOL_VERSION) {
748: server_write_client(c, MSG_VERSION, NULL, 0);
749: c->flags |= CLIENT_BAD;
750: imsg_free(&imsg);
751: continue;
752: }
753:
754: log_debug("got %d from client %d", imsg.hdr.type, c->ibuf.fd);
755: switch (imsg.hdr.type) {
756: case MSG_COMMAND:
757: if (datalen != sizeof commanddata)
758: fatalx("bad MSG_COMMAND size");
759: memcpy(&commanddata, imsg.data, sizeof commanddata);
760:
761: server_client_msg_command(c, &commanddata);
762: break;
763: case MSG_IDENTIFY:
764: if (datalen != sizeof identifydata)
765: fatalx("bad MSG_IDENTIFY size");
766: if (imsg.fd == -1)
767: fatalx("MSG_IDENTIFY missing fd");
768: memcpy(&identifydata, imsg.data, sizeof identifydata);
769:
1.39 nicm 770: c->stdin_fd = imsg.fd;
1.37 nicm 771: c->stdin_event = bufferevent_new(c->stdin_fd,
772: NULL, NULL, server_client_in_callback, c);
1.36 nicm 773: if (c->stdin_event == NULL)
774: fatalx("failed to create stdin event");
1.49 nicm 775: setblocking(c->stdin_fd, 0);
1.36 nicm 776:
1.1 nicm 777: server_client_msg_identify(c, &identifydata, imsg.fd);
778: break;
1.33 nicm 779: case MSG_STDOUT:
780: if (datalen != 0)
781: fatalx("bad MSG_STDOUT size");
782: if (imsg.fd == -1)
783: fatalx("MSG_STDOUT missing fd");
784:
1.36 nicm 785: c->stdout_fd = imsg.fd;
1.37 nicm 786: c->stdout_event = bufferevent_new(c->stdout_fd,
787: NULL, NULL, server_client_out_callback, c);
1.36 nicm 788: if (c->stdout_event == NULL)
789: fatalx("failed to create stdout event");
1.49 nicm 790: setblocking(c->stdout_fd, 0);
1.36 nicm 791:
1.33 nicm 792: break;
793: case MSG_STDERR:
794: if (datalen != 0)
795: fatalx("bad MSG_STDERR size");
796: if (imsg.fd == -1)
797: fatalx("MSG_STDERR missing fd");
798:
1.36 nicm 799: c->stderr_fd = imsg.fd;
1.37 nicm 800: c->stderr_event = bufferevent_new(c->stderr_fd,
801: NULL, NULL, server_client_err_callback, c);
1.36 nicm 802: if (c->stderr_event == NULL)
803: fatalx("failed to create stderr event");
1.49 nicm 804: setblocking(c->stderr_fd, 0);
1.36 nicm 805:
1.33 nicm 806: break;
1.1 nicm 807: case MSG_RESIZE:
808: if (datalen != 0)
809: fatalx("bad MSG_RESIZE size");
810:
1.32 nicm 811: if (tty_resize(&c->tty)) {
812: recalculate_sizes();
813: server_redraw_client(c);
814: }
1.1 nicm 815: break;
816: case MSG_EXITING:
817: if (datalen != 0)
818: fatalx("bad MSG_EXITING size");
819:
820: c->session = NULL;
821: tty_close(&c->tty);
822: server_write_client(c, MSG_EXITED, NULL, 0);
823: break;
824: case MSG_WAKEUP:
825: case MSG_UNLOCK:
826: if (datalen != 0)
827: fatalx("bad MSG_WAKEUP size");
828:
829: if (!(c->flags & CLIENT_SUSPENDED))
830: break;
831: c->flags &= ~CLIENT_SUSPENDED;
1.10 nicm 832:
1.11 nicm 833: if (gettimeofday(&c->activity_time, NULL) != 0)
834: fatal("gettimeofday");
1.47 nicm 835: if (c->session != NULL)
836: session_update_activity(c->session);
1.10 nicm 837:
1.1 nicm 838: tty_start_tty(&c->tty);
839: server_redraw_client(c);
840: recalculate_sizes();
841: break;
842: case MSG_ENVIRON:
843: if (datalen != sizeof environdata)
844: fatalx("bad MSG_ENVIRON size");
845: memcpy(&environdata, imsg.data, sizeof environdata);
846:
847: environdata.var[(sizeof environdata.var) - 1] = '\0';
848: if (strchr(environdata.var, '=') != NULL)
849: environ_put(&c->environ, environdata.var);
850: break;
851: case MSG_SHELL:
852: if (datalen != 0)
853: fatalx("bad MSG_SHELL size");
854:
855: server_client_msg_shell(c);
856: break;
857: default:
858: fatalx("unexpected message");
859: }
860:
861: imsg_free(&imsg);
862: }
863: }
864:
865: /* Callback to send error message to client. */
866: void printflike2
867: server_client_msg_error(struct cmd_ctx *ctx, const char *fmt, ...)
868: {
1.33 nicm 869: va_list ap;
1.1 nicm 870:
871: va_start(ap, fmt);
1.36 nicm 872: evbuffer_add_vprintf(ctx->cmdclient->stderr_event->output, fmt, ap);
1.1 nicm 873: va_end(ap);
874:
1.36 nicm 875: bufferevent_write(ctx->cmdclient->stderr_event, "\n", 1);
1.34 nicm 876: ctx->cmdclient->retcode = 1;
1.1 nicm 877: }
878:
879: /* Callback to send print message to client. */
880: void printflike2
881: server_client_msg_print(struct cmd_ctx *ctx, const char *fmt, ...)
882: {
1.33 nicm 883: va_list ap;
1.1 nicm 884:
885: va_start(ap, fmt);
1.36 nicm 886: evbuffer_add_vprintf(ctx->cmdclient->stdout_event->output, fmt, ap);
1.1 nicm 887: va_end(ap);
888:
1.36 nicm 889: bufferevent_write(ctx->cmdclient->stdout_event, "\n", 1);
1.1 nicm 890: }
891:
892: /* Callback to send print message to client, if not quiet. */
893: void printflike2
894: server_client_msg_info(struct cmd_ctx *ctx, const char *fmt, ...)
895: {
1.33 nicm 896: va_list ap;
1.1 nicm 897:
1.26 nicm 898: if (options_get_number(&global_options, "quiet"))
1.1 nicm 899: return;
900:
901: va_start(ap, fmt);
1.36 nicm 902: evbuffer_add_vprintf(ctx->cmdclient->stdout_event->output, fmt, ap);
1.1 nicm 903: va_end(ap);
904:
1.36 nicm 905: bufferevent_write(ctx->cmdclient->stdout_event, "\n", 1);
1.1 nicm 906: }
907:
908: /* Handle command message. */
909: void
910: server_client_msg_command(struct client *c, struct msg_command_data *data)
911: {
1.36 nicm 912: struct cmd_ctx ctx;
913: struct cmd_list *cmdlist = NULL;
914: int argc;
915: char **argv, *cause;
1.1 nicm 916:
917: ctx.error = server_client_msg_error;
918: ctx.print = server_client_msg_print;
919: ctx.info = server_client_msg_info;
920:
921: ctx.msgdata = data;
922: ctx.curclient = NULL;
923:
924: ctx.cmdclient = c;
925:
926: argc = data->argc;
927: data->argv[(sizeof data->argv) - 1] = '\0';
928: if (cmd_unpack_argv(data->argv, sizeof data->argv, argc, &argv) != 0) {
929: server_client_msg_error(&ctx, "command too long");
930: goto error;
931: }
932:
933: if (argc == 0) {
934: argc = 1;
935: argv = xcalloc(1, sizeof *argv);
936: *argv = xstrdup("new-session");
937: }
938:
939: if ((cmdlist = cmd_list_parse(argc, argv, &cause)) == NULL) {
940: server_client_msg_error(&ctx, "%s", cause);
941: cmd_free_argv(argc, argv);
942: goto error;
943: }
944: cmd_free_argv(argc, argv);
945:
1.36 nicm 946: if (cmd_list_exec(cmdlist, &ctx) != 1)
947: c->flags |= CLIENT_EXIT;
1.1 nicm 948: cmd_list_free(cmdlist);
949: return;
950:
951: error:
952: if (cmdlist != NULL)
953: cmd_list_free(cmdlist);
1.36 nicm 954: c->flags |= CLIENT_EXIT;
1.1 nicm 955: }
956:
957: /* Handle identify message. */
958: void
959: server_client_msg_identify(
960: struct client *c, struct msg_identify_data *data, int fd)
961: {
1.33 nicm 962: int tty_fd;
963:
1.1 nicm 964: c->cwd = NULL;
965: data->cwd[(sizeof data->cwd) - 1] = '\0';
966: if (*data->cwd != '\0')
967: c->cwd = xstrdup(data->cwd);
968:
1.33 nicm 969: if (!isatty(fd))
970: return;
971: if ((tty_fd = dup(fd)) == -1)
972: fatal("dup failed");
1.1 nicm 973: data->term[(sizeof data->term) - 1] = '\0';
1.33 nicm 974: tty_init(&c->tty, tty_fd, data->term);
1.1 nicm 975: if (data->flags & IDENTIFY_UTF8)
976: c->tty.flags |= TTY_UTF8;
977: if (data->flags & IDENTIFY_256COLOURS)
978: c->tty.term_flags |= TERM_256COLOURS;
979: else if (data->flags & IDENTIFY_88COLOURS)
980: c->tty.term_flags |= TERM_88COLOURS;
1.18 nicm 981: c->tty.key_callback = server_client_handle_key;
982: c->tty.key_data = c;
1.1 nicm 983:
984: tty_resize(&c->tty);
985:
986: c->flags |= CLIENT_TERMINAL;
987: }
988:
989: /* Handle shell message. */
990: void
991: server_client_msg_shell(struct client *c)
992: {
993: struct msg_shell_data data;
994: const char *shell;
1.25 nicm 995:
1.1 nicm 996: shell = options_get_string(&global_s_options, "default-shell");
997:
998: if (*shell == '\0' || areshell(shell))
999: shell = _PATH_BSHELL;
1000: if (strlcpy(data.shell, shell, sizeof data.shell) >= sizeof data.shell)
1001: strlcpy(data.shell, _PATH_BSHELL, sizeof data.shell);
1.25 nicm 1002:
1.1 nicm 1003: server_write_client(c, MSG_SHELL, &data, sizeof data);
1004: c->flags |= CLIENT_BAD; /* it will die after exec */
1005: }
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