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1.17 ! nicm 1: /* $OpenBSD: server-client.c,v 1.16 2009/11/04 23:42:51 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:
30: void server_client_handle_data(struct client *);
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 *);
34:
35: int server_client_msg_dispatch(struct client *);
36: void server_client_msg_command(struct client *, struct msg_command_data *);
37: void server_client_msg_identify(
38: struct client *, struct msg_identify_data *, int);
39: void server_client_msg_shell(struct client *);
40:
41: void printflike2 server_client_msg_error(struct cmd_ctx *, const char *, ...);
42: void printflike2 server_client_msg_print(struct cmd_ctx *, const char *, ...);
43: void printflike2 server_client_msg_info(struct cmd_ctx *, const char *, ...);
44:
45: /* Create a new client. */
46: void
47: server_client_create(int fd)
48: {
49: struct client *c;
50: int mode;
51: u_int i;
52:
53: if ((mode = fcntl(fd, F_GETFL)) == -1)
54: fatal("fcntl failed");
55: if (fcntl(fd, F_SETFL, mode|O_NONBLOCK) == -1)
56: fatal("fcntl failed");
57: if (fcntl(fd, F_SETFD, FD_CLOEXEC) == -1)
58: fatal("fcntl failed");
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);
1.1 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:
69: ARRAY_INIT(&c->prompt_hdata);
70:
71: c->tty.fd = -1;
72: c->title = NULL;
73:
74: c->session = NULL;
75: c->tty.sx = 80;
76: c->tty.sy = 24;
77:
78: screen_init(&c->status, c->tty.sx, 1, 0);
79: job_tree_init(&c->status_jobs);
80:
81: c->message_string = NULL;
82:
83: c->prompt_string = NULL;
84: c->prompt_buffer = NULL;
85: c->prompt_index = 0;
86:
1.17 ! nicm 87: evtimer_set(&c->repeat_timer, server_client_repeat_timer, c);
! 88:
1.1 nicm 89: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
90: if (ARRAY_ITEM(&clients, i) == NULL) {
91: ARRAY_SET(&clients, i, c);
92: return;
93: }
94: }
95: ARRAY_ADD(&clients, c);
96: log_debug("new client %d", fd);
97: }
98:
99: /* Lost a client. */
100: void
101: server_client_lost(struct client *c)
102: {
103: u_int i;
104:
105: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
106: if (ARRAY_ITEM(&clients, i) == c)
107: ARRAY_SET(&clients, i, NULL);
108: }
109: log_debug("lost client %d", c->ibuf.fd);
110:
111: /*
112: * If CLIENT_TERMINAL hasn't been set, then tty_init hasn't been called
113: * and tty_free might close an unrelated fd.
114: */
115: if (c->flags & CLIENT_TERMINAL)
116: tty_free(&c->tty);
117:
118: screen_free(&c->status);
119: job_tree_free(&c->status_jobs);
120:
121: if (c->title != NULL)
122: xfree(c->title);
123:
1.17 ! nicm 124: evtimer_del(&c->repeat_timer);
! 125:
1.15 nicm 126: evtimer_del(&c->identify_timer);
127:
1.1 nicm 128: if (c->message_string != NULL)
129: xfree(c->message_string);
1.15 nicm 130: evtimer_del(&c->message_timer);
1.1 nicm 131:
132: if (c->prompt_string != NULL)
133: xfree(c->prompt_string);
134: if (c->prompt_buffer != NULL)
135: xfree(c->prompt_buffer);
136: for (i = 0; i < ARRAY_LENGTH(&c->prompt_hdata); i++)
137: xfree(ARRAY_ITEM(&c->prompt_hdata, i));
138: ARRAY_FREE(&c->prompt_hdata);
139:
140: if (c->cwd != NULL)
141: xfree(c->cwd);
142:
143: close(c->ibuf.fd);
144: imsg_clear(&c->ibuf);
1.12 nicm 145: event_del(&c->event);
1.13 nicm 146:
1.1 nicm 147: for (i = 0; i < ARRAY_LENGTH(&dead_clients); i++) {
148: if (ARRAY_ITEM(&dead_clients, i) == NULL) {
149: ARRAY_SET(&dead_clients, i, c);
150: break;
151: }
152: }
153: if (i == ARRAY_LENGTH(&dead_clients))
154: ARRAY_ADD(&dead_clients, c);
155: c->flags |= CLIENT_DEAD;
156:
157: recalculate_sizes();
1.9 nicm 158: }
159:
1.1 nicm 160: /* Process a single client event. */
161: void
1.12 nicm 162: server_client_callback(int fd, short events, void *data)
1.1 nicm 163: {
164: struct client *c = data;
1.7 nicm 165:
166: if (c->flags & CLIENT_DEAD)
167: return;
1.1 nicm 168:
169: if (fd == c->ibuf.fd) {
1.12 nicm 170: if (events & EV_WRITE && msgbuf_write(&c->ibuf.w) < 0)
1.1 nicm 171: goto client_lost;
172:
173: if (c->flags & CLIENT_BAD) {
174: if (c->ibuf.w.queued == 0)
175: goto client_lost;
176: return;
177: }
178:
1.12 nicm 179: if (events & EV_READ && server_client_msg_dispatch(c) != 0)
1.1 nicm 180: goto client_lost;
181: }
1.14 nicm 182:
183: server_update_event(c);
1.1 nicm 184: return;
185:
186: client_lost:
187: server_client_lost(c);
188: }
189:
1.16 nicm 190: /* Handle client status timer. */
191: void
192: server_client_status_timer(void)
193: {
194: struct client *c;
195: struct session *s;
196: struct job *job;
197: struct timeval tv;
198: u_int i, interval;
199:
200: if (gettimeofday(&tv, NULL) != 0)
201: fatal("gettimeofday failed");
202:
203: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
204: c = ARRAY_ITEM(&clients, i);
205: if (c == NULL || c->session == NULL)
206: continue;
207: if (c->message_string != NULL || c->prompt_string != NULL) {
208: /*
209: * Don't need timed redraw for messages/prompts so bail
210: * now. The status timer isn't reset when they are
211: * redrawn anyway.
212: */
213: continue;
214: }
215: s = c->session;
216:
217: if (!options_get_number(&s->options, "status"))
218: continue;
219: interval = options_get_number(&s->options, "status-interval");
220:
221: if (tv.tv_sec - c->status_timer.tv_sec >= interval) {
222: RB_FOREACH(job, jobs, &c->status_jobs)
223: job_run(job);
224: c->flags |= CLIENT_STATUS;
225: }
226: }
227: }
228:
1.2 nicm 229: /* Client functions that need to happen every loop. */
230: void
231: server_client_loop(void)
232: {
233: struct client *c;
234: struct window *w;
235: struct window_pane *wp;
236: u_int i;
237:
238: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
239: c = ARRAY_ITEM(&clients, i);
240: if (c == NULL || c->session == NULL)
241: continue;
242:
1.3 nicm 243: server_client_handle_data(c);
1.16 nicm 244: if (c->session != NULL)
1.6 nicm 245: server_client_check_redraw(c);
1.2 nicm 246: }
247:
248: /*
249: * Any windows will have been redrawn as part of clients, so clear
250: * their flags now.
251: */
252: for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
253: w = ARRAY_ITEM(&windows, i);
254: if (w == NULL)
255: continue;
256:
257: w->flags &= ~WINDOW_REDRAW;
258: TAILQ_FOREACH(wp, &w->panes, entry)
259: wp->flags &= ~PANE_REDRAW;
260: }
261: }
262:
263: /* Handle data input or output from client. */
1.1 nicm 264: void
265: server_client_handle_data(struct client *c)
266: {
267: struct window *w;
268: struct window_pane *wp;
269: struct screen *s;
270: struct options *oo;
1.17 ! nicm 271: struct timeval tv, tv_now;
1.1 nicm 272: struct key_binding *bd;
273: struct keylist *keylist;
274: struct mouse_event mouse;
275: int key, status, xtimeout, mode, isprefix;
276: u_int i;
277:
1.17 ! nicm 278: /* Get the time for the activity timer. */
1.10 nicm 279: if (gettimeofday(&tv_now, NULL) != 0)
280: fatal("gettimeofday failed");
1.1 nicm 281: xtimeout = options_get_number(&c->session->options, "repeat-time");
282:
283: /* Process keys. */
284: keylist = options_get_data(&c->session->options, "prefix");
285: while (tty_keys_next(&c->tty, &key, &mouse) == 0) {
286: if (c->session == NULL)
287: return;
288: w = c->session->curw->window;
289: wp = w->active; /* could die */
290: oo = &c->session->options;
291:
1.10 nicm 292: /* Update activity timer. */
1.11 nicm 293: memcpy(&c->activity_time, &tv_now, sizeof c->activity_time);
1.10 nicm 294: memcpy(&c->session->activity_time,
295: &tv_now, sizeof c->session->activity_time);
296:
1.1 nicm 297: /* Special case: number keys jump to pane in identify mode. */
298: if (c->flags & CLIENT_IDENTIFY && key >= '0' && key <= '9') {
299: wp = window_pane_at_index(w, key - '0');
300: if (wp != NULL && window_pane_visible(wp))
301: window_set_active_pane(w, wp);
302: server_clear_identify(c);
303: continue;
304: }
305:
306: status_message_clear(c);
307: server_clear_identify(c);
308: if (c->prompt_string != NULL) {
309: status_prompt_key(c, key);
310: continue;
311: }
312:
313: /* Check for mouse keys. */
314: if (key == KEYC_MOUSE) {
315: if (options_get_number(oo, "mouse-select-pane")) {
316: window_set_active_at(w, mouse.x, mouse.y);
317: wp = w->active;
318: }
319: window_pane_mouse(wp, c, &mouse);
320: continue;
321: }
322:
323: /* Is this a prefix key? */
324: isprefix = 0;
325: for (i = 0; i < ARRAY_LENGTH(keylist); i++) {
326: if (key == ARRAY_ITEM(keylist, i)) {
327: isprefix = 1;
328: break;
329: }
330: }
331:
332: /* No previous prefix key. */
333: if (!(c->flags & CLIENT_PREFIX)) {
334: if (isprefix)
335: c->flags |= CLIENT_PREFIX;
336: else {
337: /* Try as a non-prefix key binding. */
338: if ((bd = key_bindings_lookup(key)) == NULL)
339: window_pane_key(wp, c, key);
340: else
341: key_bindings_dispatch(bd, c);
342: }
343: continue;
344: }
345:
346: /* Prefix key already pressed. Reset prefix and lookup key. */
347: c->flags &= ~CLIENT_PREFIX;
348: if ((bd = key_bindings_lookup(key | KEYC_PREFIX)) == NULL) {
349: /* If repeating, treat this as a key, else ignore. */
350: if (c->flags & CLIENT_REPEAT) {
351: c->flags &= ~CLIENT_REPEAT;
352: if (isprefix)
353: c->flags |= CLIENT_PREFIX;
354: else
355: window_pane_key(wp, c, key);
356: }
357: continue;
358: }
359:
360: /* If already repeating, but this key can't repeat, skip it. */
361: if (c->flags & CLIENT_REPEAT && !bd->can_repeat) {
362: c->flags &= ~CLIENT_REPEAT;
363: if (isprefix)
364: c->flags |= CLIENT_PREFIX;
365: else
366: window_pane_key(wp, c, key);
367: continue;
368: }
369:
370: /* If this key can repeat, reset the repeat flags and timer. */
371: if (xtimeout != 0 && bd->can_repeat) {
372: c->flags |= CLIENT_PREFIX|CLIENT_REPEAT;
373:
1.17 ! nicm 374: tv.tv_sec = xtimeout / 1000;
! 375: tv.tv_usec = (xtimeout % 1000) * 1000L;
! 376: evtimer_del(&c->repeat_timer);
! 377: evtimer_add(&c->repeat_timer, &tv);
1.1 nicm 378: }
379:
380: /* Dispatch the command. */
381: key_bindings_dispatch(bd, c);
382: }
383: if (c->session == NULL)
384: return;
385: w = c->session->curw->window;
386: wp = w->active;
387: oo = &c->session->options;
388: s = wp->screen;
389:
390: /*
391: * Update cursor position and mode settings. The scroll region and
392: * attributes are cleared across poll(2) as this is the most likely
393: * time a user may interrupt tmux, for example with ~^Z in ssh(1). This
394: * is a compromise between excessive resets and likelihood of an
395: * interrupt.
396: *
397: * tty_region/tty_reset/tty_update_mode already take care of not
398: * resetting things that are already in their default state.
399: */
400: tty_region(&c->tty, 0, c->tty.sy - 1);
401:
402: status = options_get_number(oo, "status");
403: if (!window_pane_visible(wp) || wp->yoff + s->cy >= c->tty.sy - status)
404: tty_cursor(&c->tty, 0, 0);
405: else
406: tty_cursor(&c->tty, wp->xoff + s->cx, wp->yoff + s->cy);
407:
408: mode = s->mode;
409: if (TAILQ_NEXT(TAILQ_FIRST(&w->panes), entry) != NULL &&
410: options_get_number(oo, "mouse-select-pane"))
411: mode |= MODE_MOUSE;
412: tty_update_mode(&c->tty, mode);
413: tty_reset(&c->tty);
1.17 ! nicm 414: }
! 415:
! 416: /* Repeat time callback. */
! 417: void
! 418: server_client_repeat_timer(unused int fd, unused short events, void *data)
! 419: {
! 420: struct client *c = data;
! 421:
! 422: if (c->flags & CLIENT_REPEAT)
! 423: c->flags &= ~(CLIENT_PREFIX|CLIENT_REPEAT);
1.1 nicm 424: }
425:
426: /* Check for client redraws. */
427: void
428: server_client_check_redraw(struct client *c)
429: {
430: struct session *s = c->session;
431: struct window_pane *wp;
432: int flags, redraw;
433:
434: flags = c->tty.flags & TTY_FREEZE;
435: c->tty.flags &= ~TTY_FREEZE;
436:
437: if (c->flags & (CLIENT_REDRAW|CLIENT_STATUS)) {
438: if (options_get_number(&s->options, "set-titles"))
439: server_client_set_title(c);
1.12 nicm 440:
1.1 nicm 441: if (c->message_string != NULL)
442: redraw = status_message_redraw(c);
443: else if (c->prompt_string != NULL)
444: redraw = status_prompt_redraw(c);
445: else
446: redraw = status_redraw(c);
447: if (!redraw)
448: c->flags &= ~CLIENT_STATUS;
449: }
450:
451: if (c->flags & CLIENT_REDRAW) {
452: screen_redraw_screen(c, 0);
453: c->flags &= ~CLIENT_STATUS;
454: } else {
455: TAILQ_FOREACH(wp, &c->session->curw->window->panes, entry) {
456: if (wp->flags & PANE_REDRAW)
457: screen_redraw_pane(c, wp);
458: }
459: }
460:
461: if (c->flags & CLIENT_STATUS)
462: screen_redraw_screen(c, 1);
463:
464: c->tty.flags |= flags;
465:
466: c->flags &= ~(CLIENT_REDRAW|CLIENT_STATUS);
467: }
468:
469: /* Set client title. */
470: void
471: server_client_set_title(struct client *c)
472: {
473: struct session *s = c->session;
474: const char *template;
475: char *title;
476:
477: template = options_get_string(&s->options, "set-titles-string");
478:
479: title = status_replace(c, template, time(NULL));
480: if (c->title == NULL || strcmp(title, c->title) != 0) {
481: if (c->title != NULL)
482: xfree(c->title);
483: c->title = xstrdup(title);
484: tty_set_title(&c->tty, c->title);
485: }
486: xfree(title);
487: }
488:
489: /* Dispatch message from client. */
490: int
491: server_client_msg_dispatch(struct client *c)
492: {
493: struct imsg imsg;
494: struct msg_command_data commanddata;
495: struct msg_identify_data identifydata;
496: struct msg_environ_data environdata;
497: ssize_t n, datalen;
498:
1.8 deraadt 499: if ((n = imsg_read(&c->ibuf)) == -1 || n == 0)
500: return (-1);
1.1 nicm 501:
502: for (;;) {
503: if ((n = imsg_get(&c->ibuf, &imsg)) == -1)
504: return (-1);
505: if (n == 0)
506: return (0);
507: datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
508:
509: if (imsg.hdr.peerid != PROTOCOL_VERSION) {
510: server_write_client(c, MSG_VERSION, NULL, 0);
511: c->flags |= CLIENT_BAD;
512: imsg_free(&imsg);
513: continue;
514: }
515:
516: log_debug("got %d from client %d", imsg.hdr.type, c->ibuf.fd);
517: switch (imsg.hdr.type) {
518: case MSG_COMMAND:
519: if (datalen != sizeof commanddata)
520: fatalx("bad MSG_COMMAND size");
521: memcpy(&commanddata, imsg.data, sizeof commanddata);
522:
523: server_client_msg_command(c, &commanddata);
524: break;
525: case MSG_IDENTIFY:
526: if (datalen != sizeof identifydata)
527: fatalx("bad MSG_IDENTIFY size");
528: if (imsg.fd == -1)
529: fatalx("MSG_IDENTIFY missing fd");
530: memcpy(&identifydata, imsg.data, sizeof identifydata);
531:
532: server_client_msg_identify(c, &identifydata, imsg.fd);
533: break;
534: case MSG_RESIZE:
535: if (datalen != 0)
536: fatalx("bad MSG_RESIZE size");
537:
538: tty_resize(&c->tty);
539: recalculate_sizes();
540: server_redraw_client(c);
541: break;
542: case MSG_EXITING:
543: if (datalen != 0)
544: fatalx("bad MSG_EXITING size");
545:
546: c->session = NULL;
547: tty_close(&c->tty);
548: server_write_client(c, MSG_EXITED, NULL, 0);
549: break;
550: case MSG_WAKEUP:
551: case MSG_UNLOCK:
552: if (datalen != 0)
553: fatalx("bad MSG_WAKEUP size");
554:
555: if (!(c->flags & CLIENT_SUSPENDED))
556: break;
557: c->flags &= ~CLIENT_SUSPENDED;
1.10 nicm 558:
1.11 nicm 559: if (gettimeofday(&c->activity_time, NULL) != 0)
560: fatal("gettimeofday");
561: if (c->session != NULL) {
562: memcpy(&c->session->activity_time,
563: &c->activity_time,
564: sizeof c->session->activity_time);
565: }
1.10 nicm 566:
1.1 nicm 567: tty_start_tty(&c->tty);
568: server_redraw_client(c);
569: recalculate_sizes();
570: break;
571: case MSG_ENVIRON:
572: if (datalen != sizeof environdata)
573: fatalx("bad MSG_ENVIRON size");
574: memcpy(&environdata, imsg.data, sizeof environdata);
575:
576: environdata.var[(sizeof environdata.var) - 1] = '\0';
577: if (strchr(environdata.var, '=') != NULL)
578: environ_put(&c->environ, environdata.var);
579: break;
580: case MSG_SHELL:
581: if (datalen != 0)
582: fatalx("bad MSG_SHELL size");
583:
584: server_client_msg_shell(c);
585: break;
586: default:
587: fatalx("unexpected message");
588: }
589:
590: imsg_free(&imsg);
591: }
592: }
593:
594: /* Callback to send error message to client. */
595: void printflike2
596: server_client_msg_error(struct cmd_ctx *ctx, const char *fmt, ...)
597: {
598: struct msg_print_data data;
599: va_list ap;
600:
601: va_start(ap, fmt);
602: xvsnprintf(data.msg, sizeof data.msg, fmt, ap);
603: va_end(ap);
604:
605: server_write_client(ctx->cmdclient, MSG_ERROR, &data, sizeof data);
606: }
607:
608: /* Callback to send print message to client. */
609: void printflike2
610: server_client_msg_print(struct cmd_ctx *ctx, const char *fmt, ...)
611: {
612: struct msg_print_data data;
613: va_list ap;
614:
615: va_start(ap, fmt);
616: xvsnprintf(data.msg, sizeof data.msg, fmt, ap);
617: va_end(ap);
618:
619: server_write_client(ctx->cmdclient, MSG_PRINT, &data, sizeof data);
620: }
621:
622: /* Callback to send print message to client, if not quiet. */
623: void printflike2
624: server_client_msg_info(struct cmd_ctx *ctx, const char *fmt, ...)
625: {
626: struct msg_print_data data;
627: va_list ap;
628:
629: if (be_quiet)
630: return;
631:
632: va_start(ap, fmt);
633: xvsnprintf(data.msg, sizeof data.msg, fmt, ap);
634: va_end(ap);
635:
636: server_write_client(ctx->cmdclient, MSG_PRINT, &data, sizeof data);
637: }
638:
639: /* Handle command message. */
640: void
641: server_client_msg_command(struct client *c, struct msg_command_data *data)
642: {
643: struct cmd_ctx ctx;
644: struct cmd_list *cmdlist = NULL;
645: struct cmd *cmd;
646: int argc;
647: char **argv, *cause;
648:
649: ctx.error = server_client_msg_error;
650: ctx.print = server_client_msg_print;
651: ctx.info = server_client_msg_info;
652:
653: ctx.msgdata = data;
654: ctx.curclient = NULL;
655:
656: ctx.cmdclient = c;
657:
658: argc = data->argc;
659: data->argv[(sizeof data->argv) - 1] = '\0';
660: if (cmd_unpack_argv(data->argv, sizeof data->argv, argc, &argv) != 0) {
661: server_client_msg_error(&ctx, "command too long");
662: goto error;
663: }
664:
665: if (argc == 0) {
666: argc = 1;
667: argv = xcalloc(1, sizeof *argv);
668: *argv = xstrdup("new-session");
669: }
670:
671: if ((cmdlist = cmd_list_parse(argc, argv, &cause)) == NULL) {
672: server_client_msg_error(&ctx, "%s", cause);
673: cmd_free_argv(argc, argv);
674: goto error;
675: }
676: cmd_free_argv(argc, argv);
677:
678: if (data->pid != -1) {
679: TAILQ_FOREACH(cmd, cmdlist, qentry) {
680: if (cmd->entry->flags & CMD_CANTNEST) {
681: server_client_msg_error(&ctx,
682: "sessions should be nested with care. "
683: "unset $TMUX to force");
684: goto error;
685: }
686: }
687: }
688:
689: if (cmd_list_exec(cmdlist, &ctx) != 1)
690: server_write_client(c, MSG_EXIT, NULL, 0);
691: cmd_list_free(cmdlist);
692: return;
693:
694: error:
695: if (cmdlist != NULL)
696: cmd_list_free(cmdlist);
697: server_write_client(c, MSG_EXIT, NULL, 0);
698: }
699:
700: /* Handle identify message. */
701: void
702: server_client_msg_identify(
703: struct client *c, struct msg_identify_data *data, int fd)
704: {
705: c->cwd = NULL;
706: data->cwd[(sizeof data->cwd) - 1] = '\0';
707: if (*data->cwd != '\0')
708: c->cwd = xstrdup(data->cwd);
709:
710: data->term[(sizeof data->term) - 1] = '\0';
711: tty_init(&c->tty, fd, data->term);
712: if (data->flags & IDENTIFY_UTF8)
713: c->tty.flags |= TTY_UTF8;
714: if (data->flags & IDENTIFY_256COLOURS)
715: c->tty.term_flags |= TERM_256COLOURS;
716: else if (data->flags & IDENTIFY_88COLOURS)
717: c->tty.term_flags |= TERM_88COLOURS;
718:
719: tty_resize(&c->tty);
720:
721: c->flags |= CLIENT_TERMINAL;
722: }
723:
724: /* Handle shell message. */
725: void
726: server_client_msg_shell(struct client *c)
727: {
728: struct msg_shell_data data;
729: const char *shell;
730:
731: shell = options_get_string(&global_s_options, "default-shell");
732:
733: if (*shell == '\0' || areshell(shell))
734: shell = _PATH_BSHELL;
735: if (strlcpy(data.shell, shell, sizeof data.shell) >= sizeof data.shell)
736: strlcpy(data.shell, _PATH_BSHELL, sizeof data.shell);
737:
738: server_write_client(c, MSG_SHELL, &data, sizeof data);
739: c->flags |= CLIENT_BAD; /* it will die after exec */
740: }