Annotation of src/usr.bin/tmux/server-client.c, Revision 1.66
1.66 ! nicm 1: /* $OpenBSD: server-client.c,v 1.65 2012/01/29 02:22:11 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 *);
1.40 nicm 35: void server_client_check_backoff(struct client *);
1.1 nicm 36: void server_client_check_redraw(struct client *);
37: void server_client_set_title(struct client *);
1.18 nicm 38: void server_client_reset_state(struct client *);
1.36 nicm 39: void server_client_in_callback(struct bufferevent *, short, void *);
40: void server_client_out_callback(struct bufferevent *, short, void *);
41: void server_client_err_callback(struct bufferevent *, short, void *);
1.1 nicm 42:
43: int server_client_msg_dispatch(struct client *);
44: void server_client_msg_command(struct client *, struct msg_command_data *);
45: void server_client_msg_identify(
1.25 nicm 46: struct client *, struct msg_identify_data *, int);
1.1 nicm 47: void server_client_msg_shell(struct client *);
48:
49: void printflike2 server_client_msg_error(struct cmd_ctx *, const char *, ...);
50: void printflike2 server_client_msg_print(struct cmd_ctx *, const char *, ...);
51: void printflike2 server_client_msg_info(struct cmd_ctx *, const char *, ...);
52:
53: /* Create a new client. */
54: void
55: server_client_create(int fd)
56: {
57: struct client *c;
58: u_int i;
59:
1.49 nicm 60: setblocking(fd, 0);
1.1 nicm 61:
62: c = xcalloc(1, sizeof *c);
63: c->references = 0;
64: imsg_init(&c->ibuf, fd);
1.14 nicm 65: server_update_event(c);
1.25 nicm 66:
1.10 nicm 67: if (gettimeofday(&c->creation_time, NULL) != 0)
1.1 nicm 68: fatal("gettimeofday failed");
1.11 nicm 69: memcpy(&c->activity_time, &c->creation_time, sizeof c->activity_time);
1.1 nicm 70:
1.36 nicm 71: c->stdin_event = NULL;
72: c->stdout_event = NULL;
73: c->stderr_event = NULL;
1.33 nicm 74:
1.1 nicm 75: c->tty.fd = -1;
76: c->title = NULL;
77:
78: c->session = NULL;
1.45 nicm 79: c->last_session = NULL;
1.1 nicm 80: c->tty.sx = 80;
81: c->tty.sy = 24;
82:
83: screen_init(&c->status, c->tty.sx, 1, 0);
1.51 nicm 84: RB_INIT(&c->status_new);
85: RB_INIT(&c->status_old);
1.1 nicm 86:
87: c->message_string = NULL;
1.21 nicm 88: ARRAY_INIT(&c->message_log);
1.1 nicm 89:
90: c->prompt_string = NULL;
91: c->prompt_buffer = NULL;
92: c->prompt_index = 0;
93:
1.57 nicm 94: c->last_mouse.b = MOUSE_UP;
95: c->last_mouse.x = c->last_mouse.y = -1;
96:
1.17 nicm 97: evtimer_set(&c->repeat_timer, server_client_repeat_timer, c);
98:
1.1 nicm 99: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
100: if (ARRAY_ITEM(&clients, i) == NULL) {
101: ARRAY_SET(&clients, i, c);
102: return;
103: }
104: }
105: ARRAY_ADD(&clients, c);
106: log_debug("new client %d", fd);
107: }
108:
109: /* Lost a client. */
110: void
111: server_client_lost(struct client *c)
112: {
1.21 nicm 113: struct message_entry *msg;
114: u_int i;
1.1 nicm 115:
116: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
117: if (ARRAY_ITEM(&clients, i) == c)
118: ARRAY_SET(&clients, i, NULL);
119: }
120: log_debug("lost client %d", c->ibuf.fd);
121:
122: /*
123: * If CLIENT_TERMINAL hasn't been set, then tty_init hasn't been called
124: * and tty_free might close an unrelated fd.
125: */
126: if (c->flags & CLIENT_TERMINAL)
127: tty_free(&c->tty);
128:
1.65 nicm 129: if (c->stdin_event != NULL)
130: bufferevent_free(c->stdin_event);
1.49 nicm 131: if (c->stdin_fd != -1) {
132: setblocking(c->stdin_fd, 1);
1.36 nicm 133: close(c->stdin_fd);
1.49 nicm 134: }
1.65 nicm 135: if (c->stdout_event != NULL)
136: bufferevent_free(c->stdout_event);
1.49 nicm 137: if (c->stdout_fd != -1) {
138: setblocking(c->stdout_fd, 1);
1.36 nicm 139: close(c->stdout_fd);
1.49 nicm 140: }
1.65 nicm 141: if (c->stderr_event != NULL)
142: bufferevent_free(c->stderr_event);
1.49 nicm 143: if (c->stderr_fd != -1) {
144: setblocking(c->stderr_fd, 1);
1.36 nicm 145: close(c->stderr_fd);
1.49 nicm 146: }
1.33 nicm 147:
1.51 nicm 148: status_free_jobs(&c->status_new);
149: status_free_jobs(&c->status_old);
1.1 nicm 150: screen_free(&c->status);
151:
152: if (c->title != NULL)
153: xfree(c->title);
154:
1.17 nicm 155: evtimer_del(&c->repeat_timer);
156:
1.15 nicm 157: evtimer_del(&c->identify_timer);
158:
1.1 nicm 159: if (c->message_string != NULL)
160: xfree(c->message_string);
1.15 nicm 161: evtimer_del(&c->message_timer);
1.21 nicm 162: for (i = 0; i < ARRAY_LENGTH(&c->message_log); i++) {
163: msg = &ARRAY_ITEM(&c->message_log, i);
164: xfree(msg->msg);
165: }
166: ARRAY_FREE(&c->message_log);
1.1 nicm 167:
168: if (c->prompt_string != NULL)
169: xfree(c->prompt_string);
170: if (c->prompt_buffer != NULL)
171: xfree(c->prompt_buffer);
172:
173: if (c->cwd != NULL)
174: xfree(c->cwd);
1.61 nicm 175:
176: environ_free(&c->environ);
1.1 nicm 177:
178: close(c->ibuf.fd);
179: imsg_clear(&c->ibuf);
1.12 nicm 180: event_del(&c->event);
1.13 nicm 181:
1.1 nicm 182: for (i = 0; i < ARRAY_LENGTH(&dead_clients); i++) {
183: if (ARRAY_ITEM(&dead_clients, i) == NULL) {
184: ARRAY_SET(&dead_clients, i, c);
185: break;
186: }
187: }
188: if (i == ARRAY_LENGTH(&dead_clients))
189: ARRAY_ADD(&dead_clients, c);
190: c->flags |= CLIENT_DEAD;
191:
192: recalculate_sizes();
1.41 nicm 193: server_check_unattached();
1.19 nicm 194: server_update_socket();
1.9 nicm 195: }
196:
1.1 nicm 197: /* Process a single client event. */
198: void
1.12 nicm 199: server_client_callback(int fd, short events, void *data)
1.1 nicm 200: {
201: struct client *c = data;
1.7 nicm 202:
203: if (c->flags & CLIENT_DEAD)
204: return;
1.1 nicm 205:
206: if (fd == c->ibuf.fd) {
1.12 nicm 207: if (events & EV_WRITE && msgbuf_write(&c->ibuf.w) < 0)
1.1 nicm 208: goto client_lost;
209:
210: if (c->flags & CLIENT_BAD) {
211: if (c->ibuf.w.queued == 0)
212: goto client_lost;
213: return;
214: }
215:
1.12 nicm 216: if (events & EV_READ && server_client_msg_dispatch(c) != 0)
1.1 nicm 217: goto client_lost;
218: }
1.14 nicm 219:
1.25 nicm 220: server_update_event(c);
1.1 nicm 221: return;
222:
223: client_lost:
224: server_client_lost(c);
225: }
226:
1.16 nicm 227: /* Handle client status timer. */
228: void
229: server_client_status_timer(void)
230: {
231: struct client *c;
232: struct session *s;
233: struct timeval tv;
1.20 nicm 234: u_int i;
235: int interval;
236: time_t difference;
1.16 nicm 237:
238: if (gettimeofday(&tv, NULL) != 0)
239: fatal("gettimeofday failed");
240:
241: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
242: c = ARRAY_ITEM(&clients, i);
243: if (c == NULL || c->session == NULL)
244: continue;
245: if (c->message_string != NULL || c->prompt_string != NULL) {
246: /*
247: * Don't need timed redraw for messages/prompts so bail
248: * now. The status timer isn't reset when they are
249: * redrawn anyway.
250: */
251: continue;
252: }
253: s = c->session;
254:
255: if (!options_get_number(&s->options, "status"))
256: continue;
257: interval = options_get_number(&s->options, "status-interval");
258:
1.20 nicm 259: difference = tv.tv_sec - c->status_timer.tv_sec;
260: if (difference >= interval) {
1.51 nicm 261: status_update_jobs(c);
1.16 nicm 262: c->flags |= CLIENT_STATUS;
263: }
264: }
265: }
266:
1.66 ! nicm 267: /* Check for mouse keys. */
! 268: void
! 269: server_client_check_mouse(
! 270: struct client *c, struct window_pane *wp, struct mouse_event *mouse)
! 271: {
! 272: struct session *s = c->session;
! 273: struct options *oo = &s->options;
! 274: int statusat;
! 275:
! 276: statusat = status_at_line(c);
! 277:
! 278: /* Is this a window selection click on the status line? */
! 279: if (statusat != -1 && mouse->y == (u_int)statusat &&
! 280: options_get_number(oo, "mouse-select-window")) {
! 281: if (mouse->b == MOUSE_UP && c->last_mouse.b != MOUSE_UP) {
! 282: status_set_window_at(c, mouse->x);
! 283: return;
! 284: }
! 285: if (mouse->b & MOUSE_45) {
! 286: if ((mouse->b & MOUSE_BUTTON) == MOUSE_1) {
! 287: session_previous(c->session, 0);
! 288: server_redraw_session(s);
! 289: }
! 290: if ((mouse->b & MOUSE_BUTTON) == MOUSE_2) {
! 291: session_next(c->session, 0);
! 292: server_redraw_session(s);
! 293: }
! 294: return;
! 295: }
! 296: }
! 297:
! 298: /*
! 299: * Not on status line - adjust mouse position if status line is at the
! 300: * top and limit if at the bottom. From here on a struct mouse
! 301: * represents the offset onto the window itself.
! 302: */
! 303: if (statusat == 0 &&mouse->y > 0)
! 304: mouse->y--;
! 305: else if (statusat > 0 && mouse->y >= (u_int)statusat)
! 306: mouse->y = statusat - 1;
! 307:
! 308: /* Is this a pane selection? Allow down only in copy mode. */
! 309: if (options_get_number(oo, "mouse-select-pane") &&
! 310: ((!(mouse->b & MOUSE_DRAG) && mouse->b != MOUSE_UP) ||
! 311: wp->mode != &window_copy_mode)) {
! 312: window_set_active_at(wp->window, mouse->x, mouse->y);
! 313: server_redraw_window_borders(wp->window);
! 314: wp = wp->window->active; /* may have changed */
! 315: }
! 316:
! 317: /* Check if trying to resize pane. */
! 318: if (options_get_number(oo, "mouse-resize-pane"))
! 319: layout_resize_pane_mouse(c, mouse);
! 320:
! 321: /* Update last and pass through to client. */
! 322: memcpy(&c->last_mouse, mouse, sizeof c->last_mouse);
! 323: window_pane_mouse(wp, c->session, mouse);
! 324: }
! 325:
1.18 nicm 326: /* Handle data key input from client. */
327: void
328: server_client_handle_key(int key, struct mouse_event *mouse, void *data)
329: {
330: struct client *c = data;
331: struct session *s;
332: struct window *w;
333: struct window_pane *wp;
334: struct options *oo;
335: struct timeval tv;
336: struct key_binding *bd;
337: int xtimeout, isprefix;
338:
339: /* Check the client is good to accept input. */
340: if ((c->flags & (CLIENT_DEAD|CLIENT_SUSPENDED)) != 0)
341: return;
342: if (c->session == NULL)
343: return;
344: s = c->session;
345:
346: /* Update the activity timer. */
347: if (gettimeofday(&c->activity_time, NULL) != 0)
348: fatal("gettimeofday failed");
349: memcpy(&s->activity_time, &c->activity_time, sizeof s->activity_time);
350:
351: w = c->session->curw->window;
352: wp = w->active;
353: oo = &c->session->options;
354:
355: /* Special case: number keys jump to pane in identify mode. */
1.25 nicm 356: if (c->flags & CLIENT_IDENTIFY && key >= '0' && key <= '9') {
1.30 nicm 357: if (c->flags & CLIENT_READONLY)
358: return;
1.18 nicm 359: wp = window_pane_at_index(w, key - '0');
360: if (wp != NULL && window_pane_visible(wp))
361: window_set_active_pane(w, wp);
362: server_clear_identify(c);
363: return;
364: }
365:
366: /* Handle status line. */
1.30 nicm 367: if (!(c->flags & CLIENT_READONLY)) {
368: status_message_clear(c);
369: server_clear_identify(c);
370: }
1.18 nicm 371: if (c->prompt_string != NULL) {
1.30 nicm 372: if (!(c->flags & CLIENT_READONLY))
373: status_prompt_key(c, key);
1.18 nicm 374: return;
375: }
376:
377: /* Check for mouse keys. */
378: if (key == KEYC_MOUSE) {
1.30 nicm 379: if (c->flags & CLIENT_READONLY)
380: return;
1.66 ! nicm 381: server_client_check_mouse(c, wp, mouse);
1.18 nicm 382: return;
383: }
384:
385: /* Is this a prefix key? */
1.63 nicm 386: if (key == options_get_number(&c->session->options, "prefix"))
387: isprefix = 1;
388: else if (key == options_get_number(&c->session->options, "prefix2"))
389: isprefix = 1;
390: else
391: isprefix = 0;
1.18 nicm 392:
393: /* No previous prefix key. */
394: if (!(c->flags & CLIENT_PREFIX)) {
395: if (isprefix)
396: c->flags |= CLIENT_PREFIX;
397: else {
398: /* Try as a non-prefix key binding. */
1.30 nicm 399: if ((bd = key_bindings_lookup(key)) == NULL) {
400: if (!(c->flags & CLIENT_READONLY))
1.31 nicm 401: window_pane_key(wp, c->session, key);
1.30 nicm 402: } else
1.18 nicm 403: key_bindings_dispatch(bd, c);
404: }
405: return;
406: }
407:
408: /* Prefix key already pressed. Reset prefix and lookup key. */
409: c->flags &= ~CLIENT_PREFIX;
410: if ((bd = key_bindings_lookup(key | KEYC_PREFIX)) == NULL) {
411: /* If repeating, treat this as a key, else ignore. */
412: if (c->flags & CLIENT_REPEAT) {
413: c->flags &= ~CLIENT_REPEAT;
414: if (isprefix)
415: c->flags |= CLIENT_PREFIX;
1.30 nicm 416: else if (!(c->flags & CLIENT_READONLY))
1.31 nicm 417: window_pane_key(wp, c->session, key);
1.18 nicm 418: }
419: return;
420: }
421:
422: /* If already repeating, but this key can't repeat, skip it. */
423: if (c->flags & CLIENT_REPEAT && !bd->can_repeat) {
424: c->flags &= ~CLIENT_REPEAT;
425: if (isprefix)
426: c->flags |= CLIENT_PREFIX;
1.30 nicm 427: else if (!(c->flags & CLIENT_READONLY))
1.31 nicm 428: window_pane_key(wp, c->session, key);
1.18 nicm 429: return;
430: }
431:
432: /* If this key can repeat, reset the repeat flags and timer. */
433: xtimeout = options_get_number(&c->session->options, "repeat-time");
434: if (xtimeout != 0 && bd->can_repeat) {
435: c->flags |= CLIENT_PREFIX|CLIENT_REPEAT;
1.25 nicm 436:
1.18 nicm 437: tv.tv_sec = xtimeout / 1000;
438: tv.tv_usec = (xtimeout % 1000) * 1000L;
439: evtimer_del(&c->repeat_timer);
440: evtimer_add(&c->repeat_timer, &tv);
441: }
442:
443: /* Dispatch the command. */
444: key_bindings_dispatch(bd, c);
445: }
446:
1.2 nicm 447: /* Client functions that need to happen every loop. */
448: void
449: server_client_loop(void)
450: {
451: struct client *c;
452: struct window *w;
453: struct window_pane *wp;
454: u_int i;
455:
456: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
457: c = ARRAY_ITEM(&clients, i);
1.36 nicm 458: if (c == NULL)
1.2 nicm 459: continue;
460:
1.36 nicm 461: server_client_check_exit(c);
462: if (c->session != NULL) {
463: server_client_check_redraw(c);
464: server_client_reset_state(c);
465: }
1.2 nicm 466: }
467:
468: /*
469: * Any windows will have been redrawn as part of clients, so clear
470: * their flags now.
471: */
472: for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
473: w = ARRAY_ITEM(&windows, i);
474: if (w == NULL)
475: continue;
476:
477: w->flags &= ~WINDOW_REDRAW;
478: TAILQ_FOREACH(wp, &w->panes, entry)
479: wp->flags &= ~PANE_REDRAW;
480: }
481: }
482:
1.18 nicm 483: /*
484: * Update cursor position and mode settings. The scroll region and attributes
485: * are cleared when idle (waiting for an event) as this is the most likely time
486: * a user may interrupt tmux, for example with ~^Z in ssh(1). This is a
487: * compromise between excessive resets and likelihood of an interrupt.
488: *
489: * tty_region/tty_reset/tty_update_mode already take care of not resetting
490: * things that are already in their default state.
491: */
1.1 nicm 492: void
1.18 nicm 493: server_client_reset_state(struct client *c)
1.1 nicm 494: {
1.18 nicm 495: struct window *w = c->session->curw->window;
496: struct window_pane *wp = w->active;
497: struct screen *s = wp->screen;
498: struct options *oo = &c->session->options;
1.54 nicm 499: struct options *wo = &w->options;
1.66 ! nicm 500: int status, mode, o;
1.60 nicm 501:
502: if (c->flags & CLIENT_SUSPENDED)
503: return;
1.1 nicm 504:
505: tty_region(&c->tty, 0, c->tty.sy - 1);
506:
507: status = options_get_number(oo, "status");
508: if (!window_pane_visible(wp) || wp->yoff + s->cy >= c->tty.sy - status)
509: tty_cursor(&c->tty, 0, 0);
1.66 ! nicm 510: else {
! 511: o = status && options_get_number (oo, "status-position") == 0;
! 512: tty_cursor(&c->tty, wp->xoff + s->cx, o + wp->yoff + s->cy);
! 513: }
1.1 nicm 514:
1.50 nicm 515: /*
1.57 nicm 516: * Resizing panes with the mouse requires at least button mode to give
517: * a smooth appearance.
518: */
519: mode = s->mode;
520: if ((c->last_mouse.b & MOUSE_RESIZE_PANE) &&
521: !(mode & (MODE_MOUSE_BUTTON|MODE_MOUSE_ANY)))
522: mode |= MODE_MOUSE_BUTTON;
523:
524: /*
1.50 nicm 525: * Any mode will do for mouse-select-pane, but set standard mode if
526: * none.
527: */
1.54 nicm 528: if ((mode & ALL_MOUSE_MODES) == 0) {
529: if (TAILQ_NEXT(TAILQ_FIRST(&w->panes), entry) != NULL &&
1.55 nicm 530: options_get_number(oo, "mouse-select-pane"))
1.57 nicm 531: mode |= MODE_MOUSE_STANDARD;
532: else if (options_get_number(oo, "mouse-resize-pane"))
1.54 nicm 533: mode |= MODE_MOUSE_STANDARD;
534: else if (options_get_number(oo, "mouse-select-window"))
535: mode |= MODE_MOUSE_STANDARD;
536: else if (options_get_number(wo, "mode-mouse"))
537: mode |= MODE_MOUSE_STANDARD;
538: }
1.48 nicm 539:
540: /*
541: * Set UTF-8 mouse input if required. If the terminal is UTF-8, the
542: * user has set mouse-utf8 and any mouse mode is in effect, turn on
543: * UTF-8 mouse input. If the receiving terminal hasn't requested it
544: * (that is, it isn't in s->mode), then it'll be converted in
545: * input_mouse.
546: */
547: if ((c->tty.flags & TTY_UTF8) &&
548: (mode & ALL_MOUSE_MODES) && options_get_number(oo, "mouse-utf8"))
549: mode |= MODE_MOUSE_UTF8;
550: else
551: mode &= ~MODE_MOUSE_UTF8;
552:
553: /* Set the terminal mode and reset attributes. */
1.59 nicm 554: tty_update_mode(&c->tty, mode, s);
1.1 nicm 555: tty_reset(&c->tty);
1.17 nicm 556: }
557:
558: /* Repeat time callback. */
1.24 nicm 559: /* ARGSUSED */
1.17 nicm 560: void
561: server_client_repeat_timer(unused int fd, unused short events, void *data)
562: {
563: struct client *c = data;
564:
565: if (c->flags & CLIENT_REPEAT)
566: c->flags &= ~(CLIENT_PREFIX|CLIENT_REPEAT);
1.1 nicm 567: }
568:
1.36 nicm 569: /* Check if client should be exited. */
570: void
571: server_client_check_exit(struct client *c)
572: {
573: struct msg_exit_data exitdata;
574:
575: if (!(c->flags & CLIENT_EXIT))
576: return;
577:
578: if (c->stdout_fd != -1 && c->stdout_event != NULL &&
579: EVBUFFER_LENGTH(c->stdout_event->output) != 0)
580: return;
581: if (c->stderr_fd != -1 && c->stderr_event != NULL &&
582: EVBUFFER_LENGTH(c->stderr_event->output) != 0)
583: return;
584:
585: exitdata.retcode = c->retcode;
586: server_write_client(c, MSG_EXIT, &exitdata, sizeof exitdata);
587:
588: c->flags &= ~CLIENT_EXIT;
1.38 nicm 589: }
590:
1.1 nicm 591: /* Check for client redraws. */
592: void
593: server_client_check_redraw(struct client *c)
594: {
595: struct session *s = c->session;
596: struct window_pane *wp;
597: int flags, redraw;
598:
599: flags = c->tty.flags & TTY_FREEZE;
600: c->tty.flags &= ~TTY_FREEZE;
601:
602: if (c->flags & (CLIENT_REDRAW|CLIENT_STATUS)) {
603: if (options_get_number(&s->options, "set-titles"))
604: server_client_set_title(c);
1.12 nicm 605:
1.1 nicm 606: if (c->message_string != NULL)
607: redraw = status_message_redraw(c);
608: else if (c->prompt_string != NULL)
609: redraw = status_prompt_redraw(c);
610: else
611: redraw = status_redraw(c);
612: if (!redraw)
613: c->flags &= ~CLIENT_STATUS;
614: }
615:
616: if (c->flags & CLIENT_REDRAW) {
1.27 nicm 617: screen_redraw_screen(c, 0, 0);
618: c->flags &= ~(CLIENT_STATUS|CLIENT_BORDERS);
1.38 nicm 619: } else if (c->flags & CLIENT_REDRAWWINDOW) {
620: TAILQ_FOREACH(wp, &c->session->curw->window->panes, entry)
621: screen_redraw_pane(c, wp);
622: c->flags &= ~CLIENT_REDRAWWINDOW;
1.1 nicm 623: } else {
624: TAILQ_FOREACH(wp, &c->session->curw->window->panes, entry) {
625: if (wp->flags & PANE_REDRAW)
626: screen_redraw_pane(c, wp);
627: }
628: }
629:
1.27 nicm 630: if (c->flags & CLIENT_BORDERS)
631: screen_redraw_screen(c, 0, 1);
632:
1.1 nicm 633: if (c->flags & CLIENT_STATUS)
1.27 nicm 634: screen_redraw_screen(c, 1, 0);
1.1 nicm 635:
636: c->tty.flags |= flags;
637:
1.27 nicm 638: c->flags &= ~(CLIENT_REDRAW|CLIENT_STATUS|CLIENT_BORDERS);
1.1 nicm 639: }
640:
641: /* Set client title. */
642: void
643: server_client_set_title(struct client *c)
644: {
645: struct session *s = c->session;
646: const char *template;
647: char *title;
648:
649: template = options_get_string(&s->options, "set-titles-string");
1.25 nicm 650:
1.52 nicm 651: title = status_replace(c, NULL, NULL, NULL, template, time(NULL), 1);
1.1 nicm 652: if (c->title == NULL || strcmp(title, c->title) != 0) {
653: if (c->title != NULL)
654: xfree(c->title);
655: c->title = xstrdup(title);
656: tty_set_title(&c->tty, c->title);
657: }
658: xfree(title);
659: }
660:
1.36 nicm 661: /*
662: * Error callback for client stdin. Caller must increase reference count when
663: * enabling event!
664: */
665: void
666: server_client_in_callback(
667: unused struct bufferevent *bufev, unused short what, void *data)
668: {
669: struct client *c = data;
670:
671: c->references--;
672: if (c->flags & CLIENT_DEAD)
673: return;
674:
675: bufferevent_disable(c->stdin_event, EV_READ|EV_WRITE);
1.49 nicm 676: setblocking(c->stdin_fd, 1);
1.36 nicm 677: close(c->stdin_fd);
678: c->stdin_fd = -1;
679:
680: if (c->stdin_callback != NULL)
681: c->stdin_callback(c, c->stdin_data);
682: }
683:
684: /* Error callback for client stdout. */
685: void
686: server_client_out_callback(
687: unused struct bufferevent *bufev, unused short what, unused void *data)
688: {
689: struct client *c = data;
690:
691: bufferevent_disable(c->stdout_event, EV_READ|EV_WRITE);
1.49 nicm 692: setblocking(c->stdout_fd, 1);
1.36 nicm 693: close(c->stdout_fd);
694: c->stdout_fd = -1;
695: }
696:
697: /* Error callback for client stderr. */
698: void
699: server_client_err_callback(
700: unused struct bufferevent *bufev, unused short what, unused void *data)
701: {
702: struct client *c = data;
703:
704: bufferevent_disable(c->stderr_event, EV_READ|EV_WRITE);
1.49 nicm 705: setblocking(c->stderr_fd, 1);
1.36 nicm 706: close(c->stderr_fd);
707: c->stderr_fd = -1;
708: }
709:
1.1 nicm 710: /* Dispatch message from client. */
711: int
712: server_client_msg_dispatch(struct client *c)
713: {
714: struct imsg imsg;
715: struct msg_command_data commanddata;
716: struct msg_identify_data identifydata;
717: struct msg_environ_data environdata;
718: ssize_t n, datalen;
719:
1.8 deraadt 720: if ((n = imsg_read(&c->ibuf)) == -1 || n == 0)
721: return (-1);
1.1 nicm 722:
723: for (;;) {
724: if ((n = imsg_get(&c->ibuf, &imsg)) == -1)
725: return (-1);
726: if (n == 0)
727: return (0);
728: datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
729:
730: if (imsg.hdr.peerid != PROTOCOL_VERSION) {
731: server_write_client(c, MSG_VERSION, NULL, 0);
732: c->flags |= CLIENT_BAD;
733: imsg_free(&imsg);
734: continue;
735: }
736:
737: log_debug("got %d from client %d", imsg.hdr.type, c->ibuf.fd);
738: switch (imsg.hdr.type) {
739: case MSG_COMMAND:
740: if (datalen != sizeof commanddata)
741: fatalx("bad MSG_COMMAND size");
742: memcpy(&commanddata, imsg.data, sizeof commanddata);
743:
744: server_client_msg_command(c, &commanddata);
745: break;
746: case MSG_IDENTIFY:
747: if (datalen != sizeof identifydata)
748: fatalx("bad MSG_IDENTIFY size");
749: if (imsg.fd == -1)
750: fatalx("MSG_IDENTIFY missing fd");
751: memcpy(&identifydata, imsg.data, sizeof identifydata);
752:
1.39 nicm 753: c->stdin_fd = imsg.fd;
1.37 nicm 754: c->stdin_event = bufferevent_new(c->stdin_fd,
755: NULL, NULL, server_client_in_callback, c);
1.36 nicm 756: if (c->stdin_event == NULL)
757: fatalx("failed to create stdin event");
1.49 nicm 758: setblocking(c->stdin_fd, 0);
1.36 nicm 759:
1.1 nicm 760: server_client_msg_identify(c, &identifydata, imsg.fd);
761: break;
1.33 nicm 762: case MSG_STDOUT:
763: if (datalen != 0)
764: fatalx("bad MSG_STDOUT size");
765: if (imsg.fd == -1)
766: fatalx("MSG_STDOUT missing fd");
767:
1.36 nicm 768: c->stdout_fd = imsg.fd;
1.37 nicm 769: c->stdout_event = bufferevent_new(c->stdout_fd,
770: NULL, NULL, server_client_out_callback, c);
1.36 nicm 771: if (c->stdout_event == NULL)
772: fatalx("failed to create stdout event");
1.49 nicm 773: setblocking(c->stdout_fd, 0);
1.36 nicm 774:
1.33 nicm 775: break;
776: case MSG_STDERR:
777: if (datalen != 0)
778: fatalx("bad MSG_STDERR size");
779: if (imsg.fd == -1)
780: fatalx("MSG_STDERR missing fd");
781:
1.36 nicm 782: c->stderr_fd = imsg.fd;
1.37 nicm 783: c->stderr_event = bufferevent_new(c->stderr_fd,
784: NULL, NULL, server_client_err_callback, c);
1.36 nicm 785: if (c->stderr_event == NULL)
786: fatalx("failed to create stderr event");
1.49 nicm 787: setblocking(c->stderr_fd, 0);
1.36 nicm 788:
1.33 nicm 789: break;
1.1 nicm 790: case MSG_RESIZE:
791: if (datalen != 0)
792: fatalx("bad MSG_RESIZE size");
793:
1.32 nicm 794: if (tty_resize(&c->tty)) {
795: recalculate_sizes();
796: server_redraw_client(c);
797: }
1.1 nicm 798: break;
799: case MSG_EXITING:
800: if (datalen != 0)
801: fatalx("bad MSG_EXITING size");
802:
803: c->session = NULL;
804: tty_close(&c->tty);
805: server_write_client(c, MSG_EXITED, NULL, 0);
806: break;
807: case MSG_WAKEUP:
808: case MSG_UNLOCK:
809: if (datalen != 0)
810: fatalx("bad MSG_WAKEUP size");
811:
812: if (!(c->flags & CLIENT_SUSPENDED))
813: break;
814: c->flags &= ~CLIENT_SUSPENDED;
1.10 nicm 815:
1.11 nicm 816: if (gettimeofday(&c->activity_time, NULL) != 0)
817: fatal("gettimeofday");
1.47 nicm 818: if (c->session != NULL)
819: session_update_activity(c->session);
1.10 nicm 820:
1.1 nicm 821: tty_start_tty(&c->tty);
822: server_redraw_client(c);
823: recalculate_sizes();
824: break;
825: case MSG_ENVIRON:
826: if (datalen != sizeof environdata)
827: fatalx("bad MSG_ENVIRON size");
828: memcpy(&environdata, imsg.data, sizeof environdata);
829:
830: environdata.var[(sizeof environdata.var) - 1] = '\0';
831: if (strchr(environdata.var, '=') != NULL)
832: environ_put(&c->environ, environdata.var);
833: break;
834: case MSG_SHELL:
835: if (datalen != 0)
836: fatalx("bad MSG_SHELL size");
837:
838: server_client_msg_shell(c);
839: break;
840: default:
841: fatalx("unexpected message");
842: }
843:
844: imsg_free(&imsg);
845: }
846: }
847:
848: /* Callback to send error message to client. */
849: void printflike2
850: server_client_msg_error(struct cmd_ctx *ctx, const char *fmt, ...)
851: {
1.33 nicm 852: va_list ap;
1.1 nicm 853:
854: va_start(ap, fmt);
1.36 nicm 855: evbuffer_add_vprintf(ctx->cmdclient->stderr_event->output, fmt, ap);
1.1 nicm 856: va_end(ap);
857:
1.36 nicm 858: bufferevent_write(ctx->cmdclient->stderr_event, "\n", 1);
1.34 nicm 859: ctx->cmdclient->retcode = 1;
1.1 nicm 860: }
861:
862: /* Callback to send print message to client. */
863: void printflike2
864: server_client_msg_print(struct cmd_ctx *ctx, const char *fmt, ...)
865: {
1.33 nicm 866: va_list ap;
1.1 nicm 867:
868: va_start(ap, fmt);
1.36 nicm 869: evbuffer_add_vprintf(ctx->cmdclient->stdout_event->output, fmt, ap);
1.1 nicm 870: va_end(ap);
871:
1.36 nicm 872: bufferevent_write(ctx->cmdclient->stdout_event, "\n", 1);
1.1 nicm 873: }
874:
875: /* Callback to send print message to client, if not quiet. */
876: void printflike2
877: server_client_msg_info(struct cmd_ctx *ctx, const char *fmt, ...)
878: {
1.33 nicm 879: va_list ap;
1.1 nicm 880:
1.26 nicm 881: if (options_get_number(&global_options, "quiet"))
1.1 nicm 882: return;
883:
884: va_start(ap, fmt);
1.36 nicm 885: evbuffer_add_vprintf(ctx->cmdclient->stdout_event->output, fmt, ap);
1.1 nicm 886: va_end(ap);
887:
1.36 nicm 888: bufferevent_write(ctx->cmdclient->stdout_event, "\n", 1);
1.1 nicm 889: }
890:
891: /* Handle command message. */
892: void
893: server_client_msg_command(struct client *c, struct msg_command_data *data)
894: {
1.36 nicm 895: struct cmd_ctx ctx;
896: struct cmd_list *cmdlist = NULL;
897: int argc;
898: char **argv, *cause;
1.1 nicm 899:
900: ctx.error = server_client_msg_error;
901: ctx.print = server_client_msg_print;
902: ctx.info = server_client_msg_info;
903:
904: ctx.msgdata = data;
905: ctx.curclient = NULL;
906:
907: ctx.cmdclient = c;
908:
909: argc = data->argc;
910: data->argv[(sizeof data->argv) - 1] = '\0';
911: if (cmd_unpack_argv(data->argv, sizeof data->argv, argc, &argv) != 0) {
912: server_client_msg_error(&ctx, "command too long");
913: goto error;
914: }
915:
916: if (argc == 0) {
917: argc = 1;
918: argv = xcalloc(1, sizeof *argv);
919: *argv = xstrdup("new-session");
920: }
921:
922: if ((cmdlist = cmd_list_parse(argc, argv, &cause)) == NULL) {
923: server_client_msg_error(&ctx, "%s", cause);
924: cmd_free_argv(argc, argv);
925: goto error;
926: }
927: cmd_free_argv(argc, argv);
928:
1.36 nicm 929: if (cmd_list_exec(cmdlist, &ctx) != 1)
930: c->flags |= CLIENT_EXIT;
1.1 nicm 931: cmd_list_free(cmdlist);
932: return;
933:
934: error:
935: if (cmdlist != NULL)
936: cmd_list_free(cmdlist);
1.36 nicm 937: c->flags |= CLIENT_EXIT;
1.1 nicm 938: }
939:
940: /* Handle identify message. */
941: void
942: server_client_msg_identify(
943: struct client *c, struct msg_identify_data *data, int fd)
944: {
1.33 nicm 945: int tty_fd;
946:
1.1 nicm 947: c->cwd = NULL;
948: data->cwd[(sizeof data->cwd) - 1] = '\0';
949: if (*data->cwd != '\0')
950: c->cwd = xstrdup(data->cwd);
951:
1.33 nicm 952: if (!isatty(fd))
953: return;
954: if ((tty_fd = dup(fd)) == -1)
955: fatal("dup failed");
1.1 nicm 956: data->term[(sizeof data->term) - 1] = '\0';
1.33 nicm 957: tty_init(&c->tty, tty_fd, data->term);
1.1 nicm 958: if (data->flags & IDENTIFY_UTF8)
959: c->tty.flags |= TTY_UTF8;
960: if (data->flags & IDENTIFY_256COLOURS)
961: c->tty.term_flags |= TERM_256COLOURS;
962: else if (data->flags & IDENTIFY_88COLOURS)
963: c->tty.term_flags |= TERM_88COLOURS;
1.18 nicm 964: c->tty.key_callback = server_client_handle_key;
965: c->tty.key_data = c;
1.1 nicm 966:
967: tty_resize(&c->tty);
968:
969: c->flags |= CLIENT_TERMINAL;
970: }
971:
972: /* Handle shell message. */
973: void
974: server_client_msg_shell(struct client *c)
975: {
976: struct msg_shell_data data;
977: const char *shell;
1.25 nicm 978:
1.1 nicm 979: shell = options_get_string(&global_s_options, "default-shell");
980:
981: if (*shell == '\0' || areshell(shell))
982: shell = _PATH_BSHELL;
983: if (strlcpy(data.shell, shell, sizeof data.shell) >= sizeof data.shell)
984: strlcpy(data.shell, _PATH_BSHELL, sizeof data.shell);
1.25 nicm 985:
1.1 nicm 986: server_write_client(c, MSG_SHELL, &data, sizeof data);
987: c->flags |= CLIENT_BAD; /* it will die after exec */
988: }
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