Annotation of src/usr.bin/tmux/server-client.c, Revision 1.70
1.70 ! nicm 1: /* $OpenBSD: server-client.c,v 1.69 2012/03/17 18:24:07 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
19: #include <sys/types.h>
20:
1.12 nicm 21: #include <event.h>
1.1 nicm 22: #include <fcntl.h>
23: #include <string.h>
1.4 nicm 24: #include <time.h>
1.1 nicm 25: #include <paths.h>
26: #include <unistd.h>
27:
28: #include "tmux.h"
29:
1.66 nicm 30: void server_client_check_mouse(struct client *c,
31: struct window_pane *wp, struct mouse_event *mouse);
1.18 nicm 32: void server_client_handle_key(int, struct mouse_event *, void *);
1.17 nicm 33: void server_client_repeat_timer(int, short, void *);
1.36 nicm 34: void server_client_check_exit(struct client *);
1.1 nicm 35: void server_client_check_redraw(struct client *);
36: void server_client_set_title(struct client *);
1.18 nicm 37: void server_client_reset_state(struct client *);
1.36 nicm 38: void server_client_in_callback(struct bufferevent *, short, void *);
39: void server_client_out_callback(struct bufferevent *, short, void *);
40: void server_client_err_callback(struct bufferevent *, short, void *);
1.1 nicm 41:
42: int server_client_msg_dispatch(struct client *);
43: void server_client_msg_command(struct client *, struct msg_command_data *);
44: void server_client_msg_identify(
1.25 nicm 45: struct client *, struct msg_identify_data *, int);
1.1 nicm 46: void server_client_msg_shell(struct client *);
47:
48: void printflike2 server_client_msg_error(struct cmd_ctx *, const char *, ...);
49: void printflike2 server_client_msg_print(struct cmd_ctx *, const char *, ...);
50: void printflike2 server_client_msg_info(struct cmd_ctx *, const char *, ...);
51:
52: /* Create a new client. */
53: void
54: server_client_create(int fd)
55: {
56: struct client *c;
57: u_int i;
58:
1.49 nicm 59: setblocking(fd, 0);
1.1 nicm 60:
61: c = xcalloc(1, sizeof *c);
62: c->references = 0;
63: imsg_init(&c->ibuf, fd);
1.14 nicm 64: server_update_event(c);
1.25 nicm 65:
1.10 nicm 66: if (gettimeofday(&c->creation_time, NULL) != 0)
1.1 nicm 67: fatal("gettimeofday failed");
1.11 nicm 68: memcpy(&c->activity_time, &c->creation_time, sizeof c->activity_time);
1.1 nicm 69:
1.36 nicm 70: c->stdin_event = NULL;
71: c->stdout_event = NULL;
72: c->stderr_event = NULL;
1.33 nicm 73:
1.1 nicm 74: c->tty.fd = -1;
75: c->title = NULL;
76:
77: c->session = NULL;
1.45 nicm 78: c->last_session = NULL;
1.1 nicm 79: c->tty.sx = 80;
80: c->tty.sy = 24;
81:
82: screen_init(&c->status, c->tty.sx, 1, 0);
1.51 nicm 83: RB_INIT(&c->status_new);
84: RB_INIT(&c->status_old);
1.1 nicm 85:
86: c->message_string = NULL;
1.21 nicm 87: ARRAY_INIT(&c->message_log);
1.1 nicm 88:
89: c->prompt_string = NULL;
90: c->prompt_buffer = NULL;
91: c->prompt_index = 0;
92:
1.57 nicm 93: c->last_mouse.b = MOUSE_UP;
94: c->last_mouse.x = c->last_mouse.y = -1;
95:
1.17 nicm 96: evtimer_set(&c->repeat_timer, server_client_repeat_timer, c);
97:
1.1 nicm 98: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
99: if (ARRAY_ITEM(&clients, i) == NULL) {
100: ARRAY_SET(&clients, i, c);
101: return;
102: }
103: }
104: ARRAY_ADD(&clients, c);
105: log_debug("new client %d", fd);
106: }
107:
108: /* Lost a client. */
109: void
110: server_client_lost(struct client *c)
111: {
1.21 nicm 112: struct message_entry *msg;
113: u_int i;
1.1 nicm 114:
115: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
116: if (ARRAY_ITEM(&clients, i) == c)
117: ARRAY_SET(&clients, i, NULL);
118: }
119: log_debug("lost client %d", c->ibuf.fd);
120:
121: /*
122: * If CLIENT_TERMINAL hasn't been set, then tty_init hasn't been called
123: * and tty_free might close an unrelated fd.
124: */
125: if (c->flags & CLIENT_TERMINAL)
126: tty_free(&c->tty);
127:
1.65 nicm 128: if (c->stdin_event != NULL)
129: bufferevent_free(c->stdin_event);
1.49 nicm 130: if (c->stdin_fd != -1) {
131: setblocking(c->stdin_fd, 1);
1.36 nicm 132: close(c->stdin_fd);
1.49 nicm 133: }
1.65 nicm 134: if (c->stdout_event != NULL)
135: bufferevent_free(c->stdout_event);
1.49 nicm 136: if (c->stdout_fd != -1) {
137: setblocking(c->stdout_fd, 1);
1.36 nicm 138: close(c->stdout_fd);
1.49 nicm 139: }
1.65 nicm 140: if (c->stderr_event != NULL)
141: bufferevent_free(c->stderr_event);
1.49 nicm 142: if (c->stderr_fd != -1) {
143: setblocking(c->stderr_fd, 1);
1.36 nicm 144: close(c->stderr_fd);
1.49 nicm 145: }
1.33 nicm 146:
1.51 nicm 147: status_free_jobs(&c->status_new);
148: status_free_jobs(&c->status_old);
1.1 nicm 149: screen_free(&c->status);
150:
151: if (c->title != NULL)
152: xfree(c->title);
153:
1.17 nicm 154: evtimer_del(&c->repeat_timer);
155:
1.69 nicm 156: if (event_initialized(&c->identify_timer))
157: evtimer_del(&c->identify_timer);
1.15 nicm 158:
1.1 nicm 159: if (c->message_string != NULL)
160: xfree(c->message_string);
1.69 nicm 161: if (event_initialized (&c->message_timer))
162: evtimer_del(&c->message_timer);
1.21 nicm 163: for (i = 0; i < ARRAY_LENGTH(&c->message_log); i++) {
164: msg = &ARRAY_ITEM(&c->message_log, i);
165: xfree(msg->msg);
166: }
167: ARRAY_FREE(&c->message_log);
1.1 nicm 168:
169: if (c->prompt_string != NULL)
170: xfree(c->prompt_string);
171: if (c->prompt_buffer != NULL)
172: xfree(c->prompt_buffer);
173:
174: if (c->cwd != NULL)
175: xfree(c->cwd);
1.61 nicm 176:
177: environ_free(&c->environ);
1.1 nicm 178:
179: close(c->ibuf.fd);
180: imsg_clear(&c->ibuf);
1.69 nicm 181: if (event_initialized(&c->event))
182: event_del(&c->event);
1.13 nicm 183:
1.1 nicm 184: for (i = 0; i < ARRAY_LENGTH(&dead_clients); i++) {
185: if (ARRAY_ITEM(&dead_clients, i) == NULL) {
186: ARRAY_SET(&dead_clients, i, c);
187: break;
188: }
189: }
190: if (i == ARRAY_LENGTH(&dead_clients))
191: ARRAY_ADD(&dead_clients, c);
192: c->flags |= CLIENT_DEAD;
193:
194: recalculate_sizes();
1.41 nicm 195: server_check_unattached();
1.19 nicm 196: server_update_socket();
1.9 nicm 197: }
198:
1.1 nicm 199: /* Process a single client event. */
200: void
1.12 nicm 201: server_client_callback(int fd, short events, void *data)
1.1 nicm 202: {
203: struct client *c = data;
1.7 nicm 204:
205: if (c->flags & CLIENT_DEAD)
206: return;
1.1 nicm 207:
208: if (fd == c->ibuf.fd) {
1.12 nicm 209: if (events & EV_WRITE && msgbuf_write(&c->ibuf.w) < 0)
1.1 nicm 210: goto client_lost;
211:
212: if (c->flags & CLIENT_BAD) {
213: if (c->ibuf.w.queued == 0)
214: goto client_lost;
215: return;
216: }
217:
1.12 nicm 218: if (events & EV_READ && server_client_msg_dispatch(c) != 0)
1.1 nicm 219: goto client_lost;
220: }
1.14 nicm 221:
1.25 nicm 222: server_update_event(c);
1.1 nicm 223: return;
224:
225: client_lost:
226: server_client_lost(c);
227: }
228:
1.16 nicm 229: /* Handle client status timer. */
230: void
231: server_client_status_timer(void)
232: {
233: struct client *c;
234: struct session *s;
235: struct timeval tv;
1.20 nicm 236: u_int i;
237: int interval;
238: time_t difference;
1.16 nicm 239:
240: if (gettimeofday(&tv, NULL) != 0)
241: fatal("gettimeofday failed");
242:
243: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
244: c = ARRAY_ITEM(&clients, i);
245: if (c == NULL || c->session == NULL)
246: continue;
247: if (c->message_string != NULL || c->prompt_string != NULL) {
248: /*
249: * Don't need timed redraw for messages/prompts so bail
250: * now. The status timer isn't reset when they are
251: * redrawn anyway.
252: */
253: continue;
254: }
255: s = c->session;
256:
257: if (!options_get_number(&s->options, "status"))
258: continue;
259: interval = options_get_number(&s->options, "status-interval");
260:
1.20 nicm 261: difference = tv.tv_sec - c->status_timer.tv_sec;
262: if (difference >= interval) {
1.51 nicm 263: status_update_jobs(c);
1.16 nicm 264: c->flags |= CLIENT_STATUS;
265: }
266: }
267: }
268:
1.66 nicm 269: /* Check for mouse keys. */
270: void
271: server_client_check_mouse(
272: struct client *c, struct window_pane *wp, struct mouse_event *mouse)
273: {
274: struct session *s = c->session;
275: struct options *oo = &s->options;
276: int statusat;
277:
278: statusat = status_at_line(c);
279:
280: /* Is this a window selection click on the status line? */
281: if (statusat != -1 && mouse->y == (u_int)statusat &&
282: options_get_number(oo, "mouse-select-window")) {
283: if (mouse->b == MOUSE_UP && c->last_mouse.b != MOUSE_UP) {
284: status_set_window_at(c, mouse->x);
1.70 ! nicm 285: recalculate_sizes();
1.66 nicm 286: return;
287: }
288: if (mouse->b & MOUSE_45) {
289: if ((mouse->b & MOUSE_BUTTON) == MOUSE_1) {
290: session_previous(c->session, 0);
291: server_redraw_session(s);
1.70 ! nicm 292: recalculate_sizes();
1.66 nicm 293: }
294: if ((mouse->b & MOUSE_BUTTON) == MOUSE_2) {
295: session_next(c->session, 0);
296: server_redraw_session(s);
1.70 ! nicm 297: recalculate_sizes();
1.66 nicm 298: }
299: return;
300: }
1.67 nicm 301: memcpy(&c->last_mouse, mouse, sizeof c->last_mouse);
302: return;
1.66 nicm 303: }
304:
305: /*
306: * Not on status line - adjust mouse position if status line is at the
307: * top and limit if at the bottom. From here on a struct mouse
308: * represents the offset onto the window itself.
309: */
310: if (statusat == 0 &&mouse->y > 0)
311: mouse->y--;
312: else if (statusat > 0 && mouse->y >= (u_int)statusat)
313: mouse->y = statusat - 1;
314:
315: /* Is this a pane selection? Allow down only in copy mode. */
316: if (options_get_number(oo, "mouse-select-pane") &&
317: ((!(mouse->b & MOUSE_DRAG) && mouse->b != MOUSE_UP) ||
318: wp->mode != &window_copy_mode)) {
319: window_set_active_at(wp->window, mouse->x, mouse->y);
320: server_redraw_window_borders(wp->window);
321: wp = wp->window->active; /* may have changed */
322: }
323:
324: /* Check if trying to resize pane. */
325: if (options_get_number(oo, "mouse-resize-pane"))
326: layout_resize_pane_mouse(c, mouse);
327:
328: /* Update last and pass through to client. */
329: memcpy(&c->last_mouse, mouse, sizeof c->last_mouse);
330: window_pane_mouse(wp, c->session, mouse);
331: }
332:
1.18 nicm 333: /* Handle data key input from client. */
334: void
335: server_client_handle_key(int key, struct mouse_event *mouse, void *data)
336: {
337: struct client *c = data;
338: struct session *s;
339: struct window *w;
340: struct window_pane *wp;
341: struct options *oo;
342: struct timeval tv;
343: struct key_binding *bd;
344: int xtimeout, isprefix;
345:
346: /* Check the client is good to accept input. */
347: if ((c->flags & (CLIENT_DEAD|CLIENT_SUSPENDED)) != 0)
348: return;
349: if (c->session == NULL)
350: return;
351: s = c->session;
352:
353: /* Update the activity timer. */
354: if (gettimeofday(&c->activity_time, NULL) != 0)
355: fatal("gettimeofday failed");
356: memcpy(&s->activity_time, &c->activity_time, sizeof s->activity_time);
357:
358: w = c->session->curw->window;
359: wp = w->active;
360: oo = &c->session->options;
361:
362: /* Special case: number keys jump to pane in identify mode. */
1.25 nicm 363: if (c->flags & CLIENT_IDENTIFY && key >= '0' && key <= '9') {
1.30 nicm 364: if (c->flags & CLIENT_READONLY)
365: return;
1.18 nicm 366: wp = window_pane_at_index(w, key - '0');
367: if (wp != NULL && window_pane_visible(wp))
368: window_set_active_pane(w, wp);
369: server_clear_identify(c);
370: return;
371: }
372:
373: /* Handle status line. */
1.30 nicm 374: if (!(c->flags & CLIENT_READONLY)) {
375: status_message_clear(c);
376: server_clear_identify(c);
377: }
1.18 nicm 378: if (c->prompt_string != NULL) {
1.30 nicm 379: if (!(c->flags & CLIENT_READONLY))
380: status_prompt_key(c, key);
1.18 nicm 381: return;
382: }
383:
384: /* Check for mouse keys. */
385: if (key == KEYC_MOUSE) {
1.30 nicm 386: if (c->flags & CLIENT_READONLY)
387: return;
1.66 nicm 388: server_client_check_mouse(c, wp, mouse);
1.18 nicm 389: return;
390: }
391:
392: /* Is this a prefix key? */
1.63 nicm 393: if (key == options_get_number(&c->session->options, "prefix"))
394: isprefix = 1;
395: else if (key == options_get_number(&c->session->options, "prefix2"))
396: isprefix = 1;
397: else
398: isprefix = 0;
1.18 nicm 399:
400: /* No previous prefix key. */
401: if (!(c->flags & CLIENT_PREFIX)) {
402: if (isprefix)
403: c->flags |= CLIENT_PREFIX;
404: else {
405: /* Try as a non-prefix key binding. */
1.30 nicm 406: if ((bd = key_bindings_lookup(key)) == NULL) {
407: if (!(c->flags & CLIENT_READONLY))
1.31 nicm 408: window_pane_key(wp, c->session, key);
1.30 nicm 409: } else
1.18 nicm 410: key_bindings_dispatch(bd, c);
411: }
412: return;
413: }
414:
415: /* Prefix key already pressed. Reset prefix and lookup key. */
416: c->flags &= ~CLIENT_PREFIX;
417: if ((bd = key_bindings_lookup(key | KEYC_PREFIX)) == NULL) {
418: /* If repeating, treat this as a key, else ignore. */
419: if (c->flags & CLIENT_REPEAT) {
420: c->flags &= ~CLIENT_REPEAT;
421: if (isprefix)
422: c->flags |= CLIENT_PREFIX;
1.30 nicm 423: else if (!(c->flags & CLIENT_READONLY))
1.31 nicm 424: window_pane_key(wp, c->session, key);
1.18 nicm 425: }
426: return;
427: }
428:
429: /* If already repeating, but this key can't repeat, skip it. */
430: if (c->flags & CLIENT_REPEAT && !bd->can_repeat) {
431: c->flags &= ~CLIENT_REPEAT;
432: if (isprefix)
433: c->flags |= CLIENT_PREFIX;
1.30 nicm 434: else if (!(c->flags & CLIENT_READONLY))
1.31 nicm 435: window_pane_key(wp, c->session, key);
1.18 nicm 436: return;
437: }
438:
439: /* If this key can repeat, reset the repeat flags and timer. */
440: xtimeout = options_get_number(&c->session->options, "repeat-time");
441: if (xtimeout != 0 && bd->can_repeat) {
442: c->flags |= CLIENT_PREFIX|CLIENT_REPEAT;
1.25 nicm 443:
1.18 nicm 444: tv.tv_sec = xtimeout / 1000;
445: tv.tv_usec = (xtimeout % 1000) * 1000L;
446: evtimer_del(&c->repeat_timer);
447: evtimer_add(&c->repeat_timer, &tv);
448: }
449:
450: /* Dispatch the command. */
451: key_bindings_dispatch(bd, c);
452: }
453:
1.2 nicm 454: /* Client functions that need to happen every loop. */
455: void
456: server_client_loop(void)
457: {
458: struct client *c;
459: struct window *w;
460: struct window_pane *wp;
461: u_int i;
462:
463: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
464: c = ARRAY_ITEM(&clients, i);
1.36 nicm 465: if (c == NULL)
1.2 nicm 466: continue;
467:
1.36 nicm 468: server_client_check_exit(c);
469: if (c->session != NULL) {
470: server_client_check_redraw(c);
471: server_client_reset_state(c);
472: }
1.2 nicm 473: }
474:
475: /*
476: * Any windows will have been redrawn as part of clients, so clear
477: * their flags now.
478: */
479: for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
480: w = ARRAY_ITEM(&windows, i);
481: if (w == NULL)
482: continue;
483:
484: w->flags &= ~WINDOW_REDRAW;
485: TAILQ_FOREACH(wp, &w->panes, entry)
486: wp->flags &= ~PANE_REDRAW;
487: }
488: }
489:
1.18 nicm 490: /*
491: * Update cursor position and mode settings. The scroll region and attributes
492: * are cleared when idle (waiting for an event) as this is the most likely time
493: * a user may interrupt tmux, for example with ~^Z in ssh(1). This is a
494: * compromise between excessive resets and likelihood of an interrupt.
495: *
496: * tty_region/tty_reset/tty_update_mode already take care of not resetting
497: * things that are already in their default state.
498: */
1.1 nicm 499: void
1.18 nicm 500: server_client_reset_state(struct client *c)
1.1 nicm 501: {
1.18 nicm 502: struct window *w = c->session->curw->window;
503: struct window_pane *wp = w->active;
504: struct screen *s = wp->screen;
505: struct options *oo = &c->session->options;
1.54 nicm 506: struct options *wo = &w->options;
1.66 nicm 507: int status, mode, o;
1.60 nicm 508:
509: if (c->flags & CLIENT_SUSPENDED)
510: return;
1.1 nicm 511:
512: tty_region(&c->tty, 0, c->tty.sy - 1);
513:
514: status = options_get_number(oo, "status");
515: if (!window_pane_visible(wp) || wp->yoff + s->cy >= c->tty.sy - status)
516: tty_cursor(&c->tty, 0, 0);
1.66 nicm 517: else {
518: o = status && options_get_number (oo, "status-position") == 0;
519: tty_cursor(&c->tty, wp->xoff + s->cx, o + wp->yoff + s->cy);
520: }
1.1 nicm 521:
1.50 nicm 522: /*
1.57 nicm 523: * Resizing panes with the mouse requires at least button mode to give
524: * a smooth appearance.
525: */
526: mode = s->mode;
527: if ((c->last_mouse.b & MOUSE_RESIZE_PANE) &&
528: !(mode & (MODE_MOUSE_BUTTON|MODE_MOUSE_ANY)))
529: mode |= MODE_MOUSE_BUTTON;
530:
531: /*
1.50 nicm 532: * Any mode will do for mouse-select-pane, but set standard mode if
533: * none.
534: */
1.54 nicm 535: if ((mode & ALL_MOUSE_MODES) == 0) {
536: if (TAILQ_NEXT(TAILQ_FIRST(&w->panes), entry) != NULL &&
1.55 nicm 537: options_get_number(oo, "mouse-select-pane"))
1.57 nicm 538: mode |= MODE_MOUSE_STANDARD;
539: else if (options_get_number(oo, "mouse-resize-pane"))
1.54 nicm 540: mode |= MODE_MOUSE_STANDARD;
541: else if (options_get_number(oo, "mouse-select-window"))
542: mode |= MODE_MOUSE_STANDARD;
543: else if (options_get_number(wo, "mode-mouse"))
544: mode |= MODE_MOUSE_STANDARD;
545: }
1.48 nicm 546:
547: /*
548: * Set UTF-8 mouse input if required. If the terminal is UTF-8, the
549: * user has set mouse-utf8 and any mouse mode is in effect, turn on
550: * UTF-8 mouse input. If the receiving terminal hasn't requested it
551: * (that is, it isn't in s->mode), then it'll be converted in
552: * input_mouse.
553: */
554: if ((c->tty.flags & TTY_UTF8) &&
555: (mode & ALL_MOUSE_MODES) && options_get_number(oo, "mouse-utf8"))
556: mode |= MODE_MOUSE_UTF8;
557: else
558: mode &= ~MODE_MOUSE_UTF8;
559:
560: /* Set the terminal mode and reset attributes. */
1.59 nicm 561: tty_update_mode(&c->tty, mode, s);
1.1 nicm 562: tty_reset(&c->tty);
1.17 nicm 563: }
564:
565: /* Repeat time callback. */
1.24 nicm 566: /* ARGSUSED */
1.17 nicm 567: void
568: server_client_repeat_timer(unused int fd, unused short events, void *data)
569: {
570: struct client *c = data;
571:
572: if (c->flags & CLIENT_REPEAT)
573: c->flags &= ~(CLIENT_PREFIX|CLIENT_REPEAT);
1.1 nicm 574: }
575:
1.36 nicm 576: /* Check if client should be exited. */
577: void
578: server_client_check_exit(struct client *c)
579: {
580: struct msg_exit_data exitdata;
581:
582: if (!(c->flags & CLIENT_EXIT))
583: return;
584:
585: if (c->stdout_fd != -1 && c->stdout_event != NULL &&
586: EVBUFFER_LENGTH(c->stdout_event->output) != 0)
587: return;
588: if (c->stderr_fd != -1 && c->stderr_event != NULL &&
589: EVBUFFER_LENGTH(c->stderr_event->output) != 0)
590: return;
591:
592: exitdata.retcode = c->retcode;
593: server_write_client(c, MSG_EXIT, &exitdata, sizeof exitdata);
594:
595: c->flags &= ~CLIENT_EXIT;
1.38 nicm 596: }
597:
1.1 nicm 598: /* Check for client redraws. */
599: void
600: server_client_check_redraw(struct client *c)
601: {
602: struct session *s = c->session;
603: struct window_pane *wp;
604: int flags, redraw;
605:
606: flags = c->tty.flags & TTY_FREEZE;
607: c->tty.flags &= ~TTY_FREEZE;
608:
609: if (c->flags & (CLIENT_REDRAW|CLIENT_STATUS)) {
610: if (options_get_number(&s->options, "set-titles"))
611: server_client_set_title(c);
1.12 nicm 612:
1.1 nicm 613: if (c->message_string != NULL)
614: redraw = status_message_redraw(c);
615: else if (c->prompt_string != NULL)
616: redraw = status_prompt_redraw(c);
617: else
618: redraw = status_redraw(c);
619: if (!redraw)
620: c->flags &= ~CLIENT_STATUS;
621: }
622:
623: if (c->flags & CLIENT_REDRAW) {
1.27 nicm 624: screen_redraw_screen(c, 0, 0);
625: c->flags &= ~(CLIENT_STATUS|CLIENT_BORDERS);
1.38 nicm 626: } else if (c->flags & CLIENT_REDRAWWINDOW) {
627: TAILQ_FOREACH(wp, &c->session->curw->window->panes, entry)
628: screen_redraw_pane(c, wp);
629: c->flags &= ~CLIENT_REDRAWWINDOW;
1.1 nicm 630: } else {
631: TAILQ_FOREACH(wp, &c->session->curw->window->panes, entry) {
632: if (wp->flags & PANE_REDRAW)
633: screen_redraw_pane(c, wp);
634: }
635: }
636:
1.27 nicm 637: if (c->flags & CLIENT_BORDERS)
638: screen_redraw_screen(c, 0, 1);
639:
1.1 nicm 640: if (c->flags & CLIENT_STATUS)
1.27 nicm 641: screen_redraw_screen(c, 1, 0);
1.1 nicm 642:
643: c->tty.flags |= flags;
644:
1.27 nicm 645: c->flags &= ~(CLIENT_REDRAW|CLIENT_STATUS|CLIENT_BORDERS);
1.1 nicm 646: }
647:
648: /* Set client title. */
649: void
650: server_client_set_title(struct client *c)
651: {
652: struct session *s = c->session;
653: const char *template;
654: char *title;
655:
656: template = options_get_string(&s->options, "set-titles-string");
1.25 nicm 657:
1.52 nicm 658: title = status_replace(c, NULL, NULL, NULL, template, time(NULL), 1);
1.1 nicm 659: if (c->title == NULL || strcmp(title, c->title) != 0) {
660: if (c->title != NULL)
661: xfree(c->title);
662: c->title = xstrdup(title);
663: tty_set_title(&c->tty, c->title);
664: }
665: xfree(title);
666: }
667:
1.36 nicm 668: /*
669: * Error callback for client stdin. Caller must increase reference count when
670: * enabling event!
671: */
672: void
673: server_client_in_callback(
674: unused struct bufferevent *bufev, unused short what, void *data)
675: {
676: struct client *c = data;
677:
678: c->references--;
679: if (c->flags & CLIENT_DEAD)
680: return;
681:
682: bufferevent_disable(c->stdin_event, EV_READ|EV_WRITE);
1.49 nicm 683: setblocking(c->stdin_fd, 1);
1.36 nicm 684: close(c->stdin_fd);
685: c->stdin_fd = -1;
686:
687: if (c->stdin_callback != NULL)
688: c->stdin_callback(c, c->stdin_data);
689: }
690:
691: /* Error callback for client stdout. */
692: void
693: server_client_out_callback(
694: unused struct bufferevent *bufev, unused short what, unused void *data)
695: {
696: struct client *c = data;
697:
698: bufferevent_disable(c->stdout_event, EV_READ|EV_WRITE);
1.49 nicm 699: setblocking(c->stdout_fd, 1);
1.36 nicm 700: close(c->stdout_fd);
701: c->stdout_fd = -1;
702: }
703:
704: /* Error callback for client stderr. */
705: void
706: server_client_err_callback(
707: unused struct bufferevent *bufev, unused short what, unused void *data)
708: {
709: struct client *c = data;
710:
711: bufferevent_disable(c->stderr_event, EV_READ|EV_WRITE);
1.49 nicm 712: setblocking(c->stderr_fd, 1);
1.36 nicm 713: close(c->stderr_fd);
714: c->stderr_fd = -1;
715: }
716:
1.1 nicm 717: /* Dispatch message from client. */
718: int
719: server_client_msg_dispatch(struct client *c)
720: {
721: struct imsg imsg;
722: struct msg_command_data commanddata;
723: struct msg_identify_data identifydata;
724: struct msg_environ_data environdata;
725: ssize_t n, datalen;
726:
1.8 deraadt 727: if ((n = imsg_read(&c->ibuf)) == -1 || n == 0)
728: return (-1);
1.1 nicm 729:
730: for (;;) {
731: if ((n = imsg_get(&c->ibuf, &imsg)) == -1)
732: return (-1);
733: if (n == 0)
734: return (0);
735: datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
736:
737: if (imsg.hdr.peerid != PROTOCOL_VERSION) {
738: server_write_client(c, MSG_VERSION, NULL, 0);
739: c->flags |= CLIENT_BAD;
740: imsg_free(&imsg);
741: continue;
742: }
743:
744: log_debug("got %d from client %d", imsg.hdr.type, c->ibuf.fd);
745: switch (imsg.hdr.type) {
746: case MSG_COMMAND:
747: if (datalen != sizeof commanddata)
748: fatalx("bad MSG_COMMAND size");
749: memcpy(&commanddata, imsg.data, sizeof commanddata);
750:
751: server_client_msg_command(c, &commanddata);
752: break;
753: case MSG_IDENTIFY:
754: if (datalen != sizeof identifydata)
755: fatalx("bad MSG_IDENTIFY size");
756: if (imsg.fd == -1)
757: fatalx("MSG_IDENTIFY missing fd");
758: memcpy(&identifydata, imsg.data, sizeof identifydata);
759:
1.39 nicm 760: c->stdin_fd = imsg.fd;
1.37 nicm 761: c->stdin_event = bufferevent_new(c->stdin_fd,
762: NULL, NULL, server_client_in_callback, c);
1.36 nicm 763: if (c->stdin_event == NULL)
764: fatalx("failed to create stdin event");
1.49 nicm 765: setblocking(c->stdin_fd, 0);
1.36 nicm 766:
1.1 nicm 767: server_client_msg_identify(c, &identifydata, imsg.fd);
768: break;
1.33 nicm 769: case MSG_STDOUT:
770: if (datalen != 0)
771: fatalx("bad MSG_STDOUT size");
772: if (imsg.fd == -1)
773: fatalx("MSG_STDOUT missing fd");
774:
1.36 nicm 775: c->stdout_fd = imsg.fd;
1.37 nicm 776: c->stdout_event = bufferevent_new(c->stdout_fd,
777: NULL, NULL, server_client_out_callback, c);
1.36 nicm 778: if (c->stdout_event == NULL)
779: fatalx("failed to create stdout event");
1.49 nicm 780: setblocking(c->stdout_fd, 0);
1.36 nicm 781:
1.33 nicm 782: break;
783: case MSG_STDERR:
784: if (datalen != 0)
785: fatalx("bad MSG_STDERR size");
786: if (imsg.fd == -1)
787: fatalx("MSG_STDERR missing fd");
788:
1.36 nicm 789: c->stderr_fd = imsg.fd;
1.37 nicm 790: c->stderr_event = bufferevent_new(c->stderr_fd,
791: NULL, NULL, server_client_err_callback, c);
1.36 nicm 792: if (c->stderr_event == NULL)
793: fatalx("failed to create stderr event");
1.49 nicm 794: setblocking(c->stderr_fd, 0);
1.36 nicm 795:
1.33 nicm 796: break;
1.1 nicm 797: case MSG_RESIZE:
798: if (datalen != 0)
799: fatalx("bad MSG_RESIZE size");
800:
1.32 nicm 801: if (tty_resize(&c->tty)) {
802: recalculate_sizes();
803: server_redraw_client(c);
804: }
1.1 nicm 805: break;
806: case MSG_EXITING:
807: if (datalen != 0)
808: fatalx("bad MSG_EXITING size");
809:
810: c->session = NULL;
811: tty_close(&c->tty);
812: server_write_client(c, MSG_EXITED, NULL, 0);
813: break;
814: case MSG_WAKEUP:
815: case MSG_UNLOCK:
816: if (datalen != 0)
817: fatalx("bad MSG_WAKEUP size");
818:
819: if (!(c->flags & CLIENT_SUSPENDED))
820: break;
821: c->flags &= ~CLIENT_SUSPENDED;
1.10 nicm 822:
1.11 nicm 823: if (gettimeofday(&c->activity_time, NULL) != 0)
824: fatal("gettimeofday");
1.47 nicm 825: if (c->session != NULL)
826: session_update_activity(c->session);
1.10 nicm 827:
1.1 nicm 828: tty_start_tty(&c->tty);
829: server_redraw_client(c);
830: recalculate_sizes();
831: break;
832: case MSG_ENVIRON:
833: if (datalen != sizeof environdata)
834: fatalx("bad MSG_ENVIRON size");
835: memcpy(&environdata, imsg.data, sizeof environdata);
836:
837: environdata.var[(sizeof environdata.var) - 1] = '\0';
838: if (strchr(environdata.var, '=') != NULL)
839: environ_put(&c->environ, environdata.var);
840: break;
841: case MSG_SHELL:
842: if (datalen != 0)
843: fatalx("bad MSG_SHELL size");
844:
845: server_client_msg_shell(c);
846: break;
847: default:
848: fatalx("unexpected message");
849: }
850:
851: imsg_free(&imsg);
852: }
853: }
854:
855: /* Callback to send error message to client. */
856: void printflike2
857: server_client_msg_error(struct cmd_ctx *ctx, const char *fmt, ...)
858: {
1.33 nicm 859: va_list ap;
1.1 nicm 860:
861: va_start(ap, fmt);
1.36 nicm 862: evbuffer_add_vprintf(ctx->cmdclient->stderr_event->output, fmt, ap);
1.1 nicm 863: va_end(ap);
864:
1.36 nicm 865: bufferevent_write(ctx->cmdclient->stderr_event, "\n", 1);
1.34 nicm 866: ctx->cmdclient->retcode = 1;
1.1 nicm 867: }
868:
869: /* Callback to send print message to client. */
870: void printflike2
871: server_client_msg_print(struct cmd_ctx *ctx, const char *fmt, ...)
872: {
1.33 nicm 873: va_list ap;
1.1 nicm 874:
875: va_start(ap, fmt);
1.36 nicm 876: evbuffer_add_vprintf(ctx->cmdclient->stdout_event->output, fmt, ap);
1.1 nicm 877: va_end(ap);
878:
1.36 nicm 879: bufferevent_write(ctx->cmdclient->stdout_event, "\n", 1);
1.1 nicm 880: }
881:
882: /* Callback to send print message to client, if not quiet. */
883: void printflike2
884: server_client_msg_info(struct cmd_ctx *ctx, const char *fmt, ...)
885: {
1.33 nicm 886: va_list ap;
1.1 nicm 887:
1.26 nicm 888: if (options_get_number(&global_options, "quiet"))
1.1 nicm 889: return;
890:
891: va_start(ap, fmt);
1.36 nicm 892: evbuffer_add_vprintf(ctx->cmdclient->stdout_event->output, fmt, ap);
1.1 nicm 893: va_end(ap);
894:
1.36 nicm 895: bufferevent_write(ctx->cmdclient->stdout_event, "\n", 1);
1.1 nicm 896: }
897:
898: /* Handle command message. */
899: void
900: server_client_msg_command(struct client *c, struct msg_command_data *data)
901: {
1.36 nicm 902: struct cmd_ctx ctx;
903: struct cmd_list *cmdlist = NULL;
904: int argc;
905: char **argv, *cause;
1.1 nicm 906:
907: ctx.error = server_client_msg_error;
908: ctx.print = server_client_msg_print;
909: ctx.info = server_client_msg_info;
910:
911: ctx.msgdata = data;
912: ctx.curclient = NULL;
913:
914: ctx.cmdclient = c;
915:
916: argc = data->argc;
917: data->argv[(sizeof data->argv) - 1] = '\0';
918: if (cmd_unpack_argv(data->argv, sizeof data->argv, argc, &argv) != 0) {
919: server_client_msg_error(&ctx, "command too long");
920: goto error;
921: }
922:
923: if (argc == 0) {
924: argc = 1;
925: argv = xcalloc(1, sizeof *argv);
926: *argv = xstrdup("new-session");
927: }
928:
929: if ((cmdlist = cmd_list_parse(argc, argv, &cause)) == NULL) {
930: server_client_msg_error(&ctx, "%s", cause);
931: cmd_free_argv(argc, argv);
932: goto error;
933: }
934: cmd_free_argv(argc, argv);
935:
1.36 nicm 936: if (cmd_list_exec(cmdlist, &ctx) != 1)
937: c->flags |= CLIENT_EXIT;
1.1 nicm 938: cmd_list_free(cmdlist);
939: return;
940:
941: error:
942: if (cmdlist != NULL)
943: cmd_list_free(cmdlist);
1.36 nicm 944: c->flags |= CLIENT_EXIT;
1.1 nicm 945: }
946:
947: /* Handle identify message. */
948: void
949: server_client_msg_identify(
950: struct client *c, struct msg_identify_data *data, int fd)
951: {
1.33 nicm 952: int tty_fd;
953:
1.1 nicm 954: c->cwd = NULL;
955: data->cwd[(sizeof data->cwd) - 1] = '\0';
956: if (*data->cwd != '\0')
957: c->cwd = xstrdup(data->cwd);
958:
1.33 nicm 959: if (!isatty(fd))
960: return;
961: if ((tty_fd = dup(fd)) == -1)
962: fatal("dup failed");
1.1 nicm 963: data->term[(sizeof data->term) - 1] = '\0';
1.33 nicm 964: tty_init(&c->tty, tty_fd, data->term);
1.1 nicm 965: if (data->flags & IDENTIFY_UTF8)
966: c->tty.flags |= TTY_UTF8;
967: if (data->flags & IDENTIFY_256COLOURS)
968: c->tty.term_flags |= TERM_256COLOURS;
969: else if (data->flags & IDENTIFY_88COLOURS)
970: c->tty.term_flags |= TERM_88COLOURS;
1.18 nicm 971: c->tty.key_callback = server_client_handle_key;
972: c->tty.key_data = c;
1.1 nicm 973:
974: tty_resize(&c->tty);
975:
976: c->flags |= CLIENT_TERMINAL;
977: }
978:
979: /* Handle shell message. */
980: void
981: server_client_msg_shell(struct client *c)
982: {
983: struct msg_shell_data data;
984: const char *shell;
1.25 nicm 985:
1.1 nicm 986: shell = options_get_string(&global_s_options, "default-shell");
987:
988: if (*shell == '\0' || areshell(shell))
989: shell = _PATH_BSHELL;
990: if (strlcpy(data.shell, shell, sizeof data.shell) >= sizeof data.shell)
991: strlcpy(data.shell, _PATH_BSHELL, sizeof data.shell);
1.25 nicm 992:
1.1 nicm 993: server_write_client(c, MSG_SHELL, &data, sizeof data);
994: c->flags |= CLIENT_BAD; /* it will die after exec */
995: }
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