Annotation of src/usr.bin/tmux/server-client.c, Revision 1.23
1.23 ! nicm 1: /* $OpenBSD: server-client.c,v 1.22 2009/11/19 10:22:06 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 *);
1.1 nicm 32: void server_client_check_redraw(struct client *);
33: void server_client_set_title(struct client *);
1.18 nicm 34: void server_client_reset_state(struct client *);
1.1 nicm 35:
36: int server_client_msg_dispatch(struct client *);
37: void server_client_msg_command(struct client *, struct msg_command_data *);
38: void server_client_msg_identify(
39: struct client *, struct msg_identify_data *, int);
40: void server_client_msg_shell(struct client *);
41:
42: void printflike2 server_client_msg_error(struct cmd_ctx *, const char *, ...);
43: void printflike2 server_client_msg_print(struct cmd_ctx *, const char *, ...);
44: void printflike2 server_client_msg_info(struct cmd_ctx *, const char *, ...);
45:
46: /* Create a new client. */
47: void
48: server_client_create(int fd)
49: {
50: struct client *c;
51: int mode;
52: u_int i;
53:
54: if ((mode = fcntl(fd, F_GETFL)) == -1)
55: fatal("fcntl failed");
56: if (fcntl(fd, F_SETFL, mode|O_NONBLOCK) == -1)
57: fatal("fcntl failed");
58: if (fcntl(fd, F_SETFD, FD_CLOEXEC) == -1)
59: fatal("fcntl failed");
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);
1.1 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:
70: ARRAY_INIT(&c->prompt_hdata);
71:
72: c->tty.fd = -1;
73: c->title = NULL;
74:
75: c->session = NULL;
76: c->tty.sx = 80;
77: c->tty.sy = 24;
78:
79: screen_init(&c->status, c->tty.sx, 1, 0);
80: job_tree_init(&c->status_jobs);
81:
82: c->message_string = NULL;
1.21 nicm 83: ARRAY_INIT(&c->message_log);
1.1 nicm 84:
85: c->prompt_string = NULL;
86: c->prompt_buffer = NULL;
87: c->prompt_index = 0;
88:
1.17 nicm 89: evtimer_set(&c->repeat_timer, server_client_repeat_timer, c);
90:
1.1 nicm 91: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
92: if (ARRAY_ITEM(&clients, i) == NULL) {
93: ARRAY_SET(&clients, i, c);
94: return;
95: }
96: }
97: ARRAY_ADD(&clients, c);
98: log_debug("new client %d", fd);
99: }
100:
101: /* Lost a client. */
102: void
103: server_client_lost(struct client *c)
104: {
1.21 nicm 105: struct message_entry *msg;
106: u_int i;
1.1 nicm 107:
108: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
109: if (ARRAY_ITEM(&clients, i) == c)
110: ARRAY_SET(&clients, i, NULL);
111: }
112: log_debug("lost client %d", c->ibuf.fd);
113:
114: /*
115: * If CLIENT_TERMINAL hasn't been set, then tty_init hasn't been called
116: * and tty_free might close an unrelated fd.
117: */
118: if (c->flags & CLIENT_TERMINAL)
119: tty_free(&c->tty);
120:
121: screen_free(&c->status);
122: job_tree_free(&c->status_jobs);
123:
124: if (c->title != NULL)
125: xfree(c->title);
126:
1.17 nicm 127: evtimer_del(&c->repeat_timer);
128:
1.15 nicm 129: evtimer_del(&c->identify_timer);
130:
1.1 nicm 131: if (c->message_string != NULL)
132: xfree(c->message_string);
1.15 nicm 133: evtimer_del(&c->message_timer);
1.21 nicm 134: for (i = 0; i < ARRAY_LENGTH(&c->message_log); i++) {
135: msg = &ARRAY_ITEM(&c->message_log, i);
136: xfree(msg->msg);
137: }
138: ARRAY_FREE(&c->message_log);
1.1 nicm 139:
140: if (c->prompt_string != NULL)
141: xfree(c->prompt_string);
142: if (c->prompt_buffer != NULL)
143: xfree(c->prompt_buffer);
144: for (i = 0; i < ARRAY_LENGTH(&c->prompt_hdata); i++)
145: xfree(ARRAY_ITEM(&c->prompt_hdata, i));
146: ARRAY_FREE(&c->prompt_hdata);
147:
148: if (c->cwd != NULL)
149: xfree(c->cwd);
150:
151: close(c->ibuf.fd);
152: imsg_clear(&c->ibuf);
1.12 nicm 153: event_del(&c->event);
1.13 nicm 154:
1.1 nicm 155: for (i = 0; i < ARRAY_LENGTH(&dead_clients); i++) {
156: if (ARRAY_ITEM(&dead_clients, i) == NULL) {
157: ARRAY_SET(&dead_clients, i, c);
158: break;
159: }
160: }
161: if (i == ARRAY_LENGTH(&dead_clients))
162: ARRAY_ADD(&dead_clients, c);
163: c->flags |= CLIENT_DEAD;
164:
165: recalculate_sizes();
1.19 nicm 166: server_update_socket();
1.9 nicm 167: }
168:
1.1 nicm 169: /* Process a single client event. */
170: void
1.12 nicm 171: server_client_callback(int fd, short events, void *data)
1.1 nicm 172: {
173: struct client *c = data;
1.7 nicm 174:
175: if (c->flags & CLIENT_DEAD)
176: return;
1.1 nicm 177:
178: if (fd == c->ibuf.fd) {
1.12 nicm 179: if (events & EV_WRITE && msgbuf_write(&c->ibuf.w) < 0)
1.1 nicm 180: goto client_lost;
181:
182: if (c->flags & CLIENT_BAD) {
183: if (c->ibuf.w.queued == 0)
184: goto client_lost;
185: return;
186: }
187:
1.12 nicm 188: if (events & EV_READ && server_client_msg_dispatch(c) != 0)
1.1 nicm 189: goto client_lost;
190: }
1.14 nicm 191:
192: server_update_event(c);
1.1 nicm 193: return;
194:
195: client_lost:
196: server_client_lost(c);
197: }
198:
1.16 nicm 199: /* Handle client status timer. */
200: void
201: server_client_status_timer(void)
202: {
203: struct client *c;
204: struct session *s;
205: struct job *job;
206: struct timeval tv;
1.20 nicm 207: u_int i;
208: int interval;
209: time_t difference;
1.16 nicm 210:
211: if (gettimeofday(&tv, NULL) != 0)
212: fatal("gettimeofday failed");
213:
214: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
215: c = ARRAY_ITEM(&clients, i);
216: if (c == NULL || c->session == NULL)
217: continue;
218: if (c->message_string != NULL || c->prompt_string != NULL) {
219: /*
220: * Don't need timed redraw for messages/prompts so bail
221: * now. The status timer isn't reset when they are
222: * redrawn anyway.
223: */
224: continue;
225: }
226: s = c->session;
227:
228: if (!options_get_number(&s->options, "status"))
229: continue;
230: interval = options_get_number(&s->options, "status-interval");
231:
1.20 nicm 232: difference = tv.tv_sec - c->status_timer.tv_sec;
233: if (difference >= interval) {
1.16 nicm 234: RB_FOREACH(job, jobs, &c->status_jobs)
1.20 nicm 235: job_run(job);
1.16 nicm 236: c->flags |= CLIENT_STATUS;
237: }
238: }
239: }
240:
1.18 nicm 241: /* Handle data key input from client. */
242: void
243: server_client_handle_key(int key, struct mouse_event *mouse, void *data)
244: {
245: struct client *c = data;
246: struct session *s;
247: struct window *w;
248: struct window_pane *wp;
249: struct options *oo;
250: struct timeval tv;
251: struct key_binding *bd;
252: struct keylist *keylist;
253: int xtimeout, isprefix;
254: u_int i;
255:
256: /* Check the client is good to accept input. */
257: if ((c->flags & (CLIENT_DEAD|CLIENT_SUSPENDED)) != 0)
258: return;
259: if (c->session == NULL)
260: return;
261: s = c->session;
262:
263: /* Update the activity timer. */
264: if (gettimeofday(&c->activity_time, NULL) != 0)
265: fatal("gettimeofday failed");
266: memcpy(&s->activity_time, &c->activity_time, sizeof s->activity_time);
267:
268: w = c->session->curw->window;
269: wp = w->active;
270: oo = &c->session->options;
271:
272: /* Special case: number keys jump to pane in identify mode. */
273: if (c->flags & CLIENT_IDENTIFY && key >= '0' && key <= '9') {
274: wp = window_pane_at_index(w, key - '0');
275: if (wp != NULL && window_pane_visible(wp))
276: window_set_active_pane(w, wp);
277: server_clear_identify(c);
278: return;
279: }
280:
281: /* Handle status line. */
282: status_message_clear(c);
283: server_clear_identify(c);
284: if (c->prompt_string != NULL) {
285: status_prompt_key(c, key);
286: return;
287: }
288:
289: /* Check for mouse keys. */
290: if (key == KEYC_MOUSE) {
291: if (options_get_number(oo, "mouse-select-pane")) {
292: window_set_active_at(w, mouse->x, mouse->y);
293: wp = w->active;
294: }
295: window_pane_mouse(wp, c, mouse);
296: return;
297: }
298:
299: /* Is this a prefix key? */
300: keylist = options_get_data(&c->session->options, "prefix");
301: isprefix = 0;
302: for (i = 0; i < ARRAY_LENGTH(keylist); i++) {
303: if (key == ARRAY_ITEM(keylist, i)) {
304: isprefix = 1;
305: break;
306: }
307: }
308:
309: /* No previous prefix key. */
310: if (!(c->flags & CLIENT_PREFIX)) {
311: if (isprefix)
312: c->flags |= CLIENT_PREFIX;
313: else {
314: /* Try as a non-prefix key binding. */
315: if ((bd = key_bindings_lookup(key)) == NULL)
316: window_pane_key(wp, c, key);
317: else
318: key_bindings_dispatch(bd, c);
319: }
320: return;
321: }
322:
323: /* Prefix key already pressed. Reset prefix and lookup key. */
324: c->flags &= ~CLIENT_PREFIX;
325: if ((bd = key_bindings_lookup(key | KEYC_PREFIX)) == NULL) {
326: /* If repeating, treat this as a key, else ignore. */
327: if (c->flags & CLIENT_REPEAT) {
328: c->flags &= ~CLIENT_REPEAT;
329: if (isprefix)
330: c->flags |= CLIENT_PREFIX;
331: else
332: window_pane_key(wp, c, key);
333: }
334: return;
335: }
336:
337: /* If already repeating, but this key can't repeat, skip it. */
338: if (c->flags & CLIENT_REPEAT && !bd->can_repeat) {
339: c->flags &= ~CLIENT_REPEAT;
340: if (isprefix)
341: c->flags |= CLIENT_PREFIX;
342: else
343: window_pane_key(wp, c, key);
344: return;
345: }
346:
347: /* If this key can repeat, reset the repeat flags and timer. */
348: xtimeout = options_get_number(&c->session->options, "repeat-time");
349: if (xtimeout != 0 && bd->can_repeat) {
350: c->flags |= CLIENT_PREFIX|CLIENT_REPEAT;
351:
352: tv.tv_sec = xtimeout / 1000;
353: tv.tv_usec = (xtimeout % 1000) * 1000L;
354: evtimer_del(&c->repeat_timer);
355: evtimer_add(&c->repeat_timer, &tv);
356: }
357:
358: /* Dispatch the command. */
359: key_bindings_dispatch(bd, c);
360: }
361:
1.2 nicm 362: /* Client functions that need to happen every loop. */
363: void
364: server_client_loop(void)
365: {
366: struct client *c;
367: struct window *w;
368: struct window_pane *wp;
369: u_int i;
370:
371: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
372: c = ARRAY_ITEM(&clients, i);
373: if (c == NULL || c->session == NULL)
374: continue;
375:
1.18 nicm 376: server_client_check_redraw(c);
377: server_client_reset_state(c);
1.2 nicm 378: }
379:
380: /*
381: * Any windows will have been redrawn as part of clients, so clear
382: * their flags now.
383: */
384: for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
385: w = ARRAY_ITEM(&windows, i);
386: if (w == NULL)
387: continue;
388:
389: w->flags &= ~WINDOW_REDRAW;
390: TAILQ_FOREACH(wp, &w->panes, entry)
391: wp->flags &= ~PANE_REDRAW;
392: }
393: }
394:
1.18 nicm 395: /*
396: * Update cursor position and mode settings. The scroll region and attributes
397: * are cleared when idle (waiting for an event) as this is the most likely time
398: * a user may interrupt tmux, for example with ~^Z in ssh(1). This is a
399: * compromise between excessive resets and likelihood of an interrupt.
400: *
401: * tty_region/tty_reset/tty_update_mode already take care of not resetting
402: * things that are already in their default state.
403: */
1.1 nicm 404: void
1.18 nicm 405: server_client_reset_state(struct client *c)
1.1 nicm 406: {
1.18 nicm 407: struct window *w = c->session->curw->window;
408: struct window_pane *wp = w->active;
409: struct screen *s = wp->screen;
410: struct options *oo = &c->session->options;
411: int status, mode;
1.1 nicm 412:
413: tty_region(&c->tty, 0, c->tty.sy - 1);
414:
415: status = options_get_number(oo, "status");
416: if (!window_pane_visible(wp) || wp->yoff + s->cy >= c->tty.sy - status)
417: tty_cursor(&c->tty, 0, 0);
418: else
419: tty_cursor(&c->tty, wp->xoff + s->cx, wp->yoff + s->cy);
420:
421: mode = s->mode;
422: if (TAILQ_NEXT(TAILQ_FIRST(&w->panes), entry) != NULL &&
423: options_get_number(oo, "mouse-select-pane"))
424: mode |= MODE_MOUSE;
425: tty_update_mode(&c->tty, mode);
426: tty_reset(&c->tty);
1.17 nicm 427: }
428:
429: /* Repeat time callback. */
430: void
431: server_client_repeat_timer(unused int fd, unused short events, void *data)
432: {
433: struct client *c = data;
434:
435: if (c->flags & CLIENT_REPEAT)
436: c->flags &= ~(CLIENT_PREFIX|CLIENT_REPEAT);
1.1 nicm 437: }
438:
439: /* Check for client redraws. */
440: void
441: server_client_check_redraw(struct client *c)
442: {
443: struct session *s = c->session;
444: struct window_pane *wp;
445: int flags, redraw;
446:
447: flags = c->tty.flags & TTY_FREEZE;
448: c->tty.flags &= ~TTY_FREEZE;
449:
450: if (c->flags & (CLIENT_REDRAW|CLIENT_STATUS)) {
451: if (options_get_number(&s->options, "set-titles"))
452: server_client_set_title(c);
1.12 nicm 453:
1.1 nicm 454: if (c->message_string != NULL)
455: redraw = status_message_redraw(c);
456: else if (c->prompt_string != NULL)
457: redraw = status_prompt_redraw(c);
458: else
459: redraw = status_redraw(c);
460: if (!redraw)
461: c->flags &= ~CLIENT_STATUS;
462: }
463:
464: if (c->flags & CLIENT_REDRAW) {
465: screen_redraw_screen(c, 0);
466: c->flags &= ~CLIENT_STATUS;
467: } else {
468: TAILQ_FOREACH(wp, &c->session->curw->window->panes, entry) {
469: if (wp->flags & PANE_REDRAW)
470: screen_redraw_pane(c, wp);
471: }
472: }
473:
474: if (c->flags & CLIENT_STATUS)
475: screen_redraw_screen(c, 1);
476:
477: c->tty.flags |= flags;
478:
479: c->flags &= ~(CLIENT_REDRAW|CLIENT_STATUS);
480: }
481:
482: /* Set client title. */
483: void
484: server_client_set_title(struct client *c)
485: {
486: struct session *s = c->session;
487: const char *template;
488: char *title;
489:
490: template = options_get_string(&s->options, "set-titles-string");
491:
1.23 ! nicm 492: title = status_replace(c, NULL, template, time(NULL), 1);
1.1 nicm 493: if (c->title == NULL || strcmp(title, c->title) != 0) {
494: if (c->title != NULL)
495: xfree(c->title);
496: c->title = xstrdup(title);
497: tty_set_title(&c->tty, c->title);
498: }
499: xfree(title);
500: }
501:
502: /* Dispatch message from client. */
503: int
504: server_client_msg_dispatch(struct client *c)
505: {
506: struct imsg imsg;
507: struct msg_command_data commanddata;
508: struct msg_identify_data identifydata;
509: struct msg_environ_data environdata;
510: ssize_t n, datalen;
511:
1.8 deraadt 512: if ((n = imsg_read(&c->ibuf)) == -1 || n == 0)
513: return (-1);
1.1 nicm 514:
515: for (;;) {
516: if ((n = imsg_get(&c->ibuf, &imsg)) == -1)
517: return (-1);
518: if (n == 0)
519: return (0);
520: datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
521:
522: if (imsg.hdr.peerid != PROTOCOL_VERSION) {
523: server_write_client(c, MSG_VERSION, NULL, 0);
524: c->flags |= CLIENT_BAD;
525: imsg_free(&imsg);
526: continue;
527: }
528:
529: log_debug("got %d from client %d", imsg.hdr.type, c->ibuf.fd);
530: switch (imsg.hdr.type) {
531: case MSG_COMMAND:
532: if (datalen != sizeof commanddata)
533: fatalx("bad MSG_COMMAND size");
534: memcpy(&commanddata, imsg.data, sizeof commanddata);
535:
536: server_client_msg_command(c, &commanddata);
537: break;
538: case MSG_IDENTIFY:
539: if (datalen != sizeof identifydata)
540: fatalx("bad MSG_IDENTIFY size");
541: if (imsg.fd == -1)
542: fatalx("MSG_IDENTIFY missing fd");
543: memcpy(&identifydata, imsg.data, sizeof identifydata);
544:
545: server_client_msg_identify(c, &identifydata, imsg.fd);
546: break;
547: case MSG_RESIZE:
548: if (datalen != 0)
549: fatalx("bad MSG_RESIZE size");
550:
551: tty_resize(&c->tty);
552: recalculate_sizes();
553: server_redraw_client(c);
554: break;
555: case MSG_EXITING:
556: if (datalen != 0)
557: fatalx("bad MSG_EXITING size");
558:
559: c->session = NULL;
560: tty_close(&c->tty);
561: server_write_client(c, MSG_EXITED, NULL, 0);
562: break;
563: case MSG_WAKEUP:
564: case MSG_UNLOCK:
565: if (datalen != 0)
566: fatalx("bad MSG_WAKEUP size");
567:
568: if (!(c->flags & CLIENT_SUSPENDED))
569: break;
570: c->flags &= ~CLIENT_SUSPENDED;
1.10 nicm 571:
1.11 nicm 572: if (gettimeofday(&c->activity_time, NULL) != 0)
573: fatal("gettimeofday");
574: if (c->session != NULL) {
575: memcpy(&c->session->activity_time,
576: &c->activity_time,
577: sizeof c->session->activity_time);
578: }
1.10 nicm 579:
1.1 nicm 580: tty_start_tty(&c->tty);
581: server_redraw_client(c);
582: recalculate_sizes();
583: break;
584: case MSG_ENVIRON:
585: if (datalen != sizeof environdata)
586: fatalx("bad MSG_ENVIRON size");
587: memcpy(&environdata, imsg.data, sizeof environdata);
588:
589: environdata.var[(sizeof environdata.var) - 1] = '\0';
590: if (strchr(environdata.var, '=') != NULL)
591: environ_put(&c->environ, environdata.var);
592: break;
593: case MSG_SHELL:
594: if (datalen != 0)
595: fatalx("bad MSG_SHELL size");
596:
597: server_client_msg_shell(c);
598: break;
599: default:
600: fatalx("unexpected message");
601: }
602:
603: imsg_free(&imsg);
604: }
605: }
606:
607: /* Callback to send error message to client. */
608: void printflike2
609: server_client_msg_error(struct cmd_ctx *ctx, const char *fmt, ...)
610: {
611: struct msg_print_data data;
612: va_list ap;
613:
614: va_start(ap, fmt);
615: xvsnprintf(data.msg, sizeof data.msg, fmt, ap);
616: va_end(ap);
617:
618: server_write_client(ctx->cmdclient, MSG_ERROR, &data, sizeof data);
619: }
620:
621: /* Callback to send print message to client. */
622: void printflike2
623: server_client_msg_print(struct cmd_ctx *ctx, const char *fmt, ...)
624: {
625: struct msg_print_data data;
626: va_list ap;
627:
628: va_start(ap, fmt);
629: xvsnprintf(data.msg, sizeof data.msg, fmt, ap);
630: va_end(ap);
631:
632: server_write_client(ctx->cmdclient, MSG_PRINT, &data, sizeof data);
633: }
634:
635: /* Callback to send print message to client, if not quiet. */
636: void printflike2
637: server_client_msg_info(struct cmd_ctx *ctx, const char *fmt, ...)
638: {
639: struct msg_print_data data;
640: va_list ap;
641:
642: if (be_quiet)
643: return;
644:
645: va_start(ap, fmt);
646: xvsnprintf(data.msg, sizeof data.msg, fmt, ap);
647: va_end(ap);
648:
649: server_write_client(ctx->cmdclient, MSG_PRINT, &data, sizeof data);
650: }
651:
652: /* Handle command message. */
653: void
654: server_client_msg_command(struct client *c, struct msg_command_data *data)
655: {
656: struct cmd_ctx ctx;
657: struct cmd_list *cmdlist = NULL;
658: struct cmd *cmd;
659: int argc;
660: char **argv, *cause;
661:
662: ctx.error = server_client_msg_error;
663: ctx.print = server_client_msg_print;
664: ctx.info = server_client_msg_info;
665:
666: ctx.msgdata = data;
667: ctx.curclient = NULL;
668:
669: ctx.cmdclient = c;
670:
671: argc = data->argc;
672: data->argv[(sizeof data->argv) - 1] = '\0';
673: if (cmd_unpack_argv(data->argv, sizeof data->argv, argc, &argv) != 0) {
674: server_client_msg_error(&ctx, "command too long");
675: goto error;
676: }
677:
678: if (argc == 0) {
679: argc = 1;
680: argv = xcalloc(1, sizeof *argv);
681: *argv = xstrdup("new-session");
682: }
683:
684: if ((cmdlist = cmd_list_parse(argc, argv, &cause)) == NULL) {
685: server_client_msg_error(&ctx, "%s", cause);
686: cmd_free_argv(argc, argv);
687: goto error;
688: }
689: cmd_free_argv(argc, argv);
690:
691: if (data->pid != -1) {
692: TAILQ_FOREACH(cmd, cmdlist, qentry) {
693: if (cmd->entry->flags & CMD_CANTNEST) {
694: server_client_msg_error(&ctx,
695: "sessions should be nested with care. "
696: "unset $TMUX to force");
697: goto error;
698: }
699: }
700: }
701:
702: if (cmd_list_exec(cmdlist, &ctx) != 1)
703: server_write_client(c, MSG_EXIT, NULL, 0);
704: cmd_list_free(cmdlist);
705: return;
706:
707: error:
708: if (cmdlist != NULL)
709: cmd_list_free(cmdlist);
710: server_write_client(c, MSG_EXIT, NULL, 0);
711: }
712:
713: /* Handle identify message. */
714: void
715: server_client_msg_identify(
716: struct client *c, struct msg_identify_data *data, int fd)
717: {
718: c->cwd = NULL;
719: data->cwd[(sizeof data->cwd) - 1] = '\0';
720: if (*data->cwd != '\0')
721: c->cwd = xstrdup(data->cwd);
722:
723: data->term[(sizeof data->term) - 1] = '\0';
724: tty_init(&c->tty, fd, data->term);
725: if (data->flags & IDENTIFY_UTF8)
726: c->tty.flags |= TTY_UTF8;
727: if (data->flags & IDENTIFY_256COLOURS)
728: c->tty.term_flags |= TERM_256COLOURS;
729: else if (data->flags & IDENTIFY_88COLOURS)
730: c->tty.term_flags |= TERM_88COLOURS;
1.18 nicm 731: c->tty.key_callback = server_client_handle_key;
732: c->tty.key_data = c;
1.1 nicm 733:
734: tty_resize(&c->tty);
735:
736: c->flags |= CLIENT_TERMINAL;
737: }
738:
739: /* Handle shell message. */
740: void
741: server_client_msg_shell(struct client *c)
742: {
743: struct msg_shell_data data;
744: const char *shell;
745:
746: shell = options_get_string(&global_s_options, "default-shell");
747:
748: if (*shell == '\0' || areshell(shell))
749: shell = _PATH_BSHELL;
750: if (strlcpy(data.shell, shell, sizeof data.shell) >= sizeof data.shell)
751: strlcpy(data.shell, _PATH_BSHELL, sizeof data.shell);
752:
753: server_write_client(c, MSG_SHELL, &data, sizeof data);
754: c->flags |= CLIENT_BAD; /* it will die after exec */
755: }
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