1: /* $OpenBSD$ */
2:
3: /*
4: * Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
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: #include <sys/ioctl.h>
21: #include <sys/uio.h>
22:
23: #include <errno.h>
24: #include <event.h>
25: #include <fcntl.h>
26: #include <stdlib.h>
27: #include <string.h>
28: #include <time.h>
29: #include <unistd.h>
30:
31: #include "tmux.h"
32:
33: static void server_client_free(int, short, void *);
34: static void server_client_check_focus(struct window_pane *);
35: static void server_client_check_resize(struct window_pane *);
36: static key_code server_client_check_mouse(struct client *);
37: static void server_client_repeat_timer(int, short, void *);
38: static void server_client_click_timer(int, short, void *);
39: static void server_client_check_exit(struct client *);
40: static void server_client_check_redraw(struct client *);
41: static void server_client_set_title(struct client *);
42: static void server_client_reset_state(struct client *);
43: static int server_client_assume_paste(struct session *);
44:
45: static void server_client_dispatch(struct imsg *, void *);
46: static void server_client_dispatch_command(struct client *, struct imsg *);
47: static void server_client_dispatch_identify(struct client *, struct imsg *);
48: static void server_client_dispatch_shell(struct client *);
49:
50: /* Idenfity mode callback. */
51: static void
52: server_client_callback_identify(__unused int fd, __unused short events, void *data)
53: {
54: server_client_clear_identify(data, NULL);
55: }
56:
57: /* Set identify mode on client. */
58: void
59: server_client_set_identify(struct client *c)
60: {
61: struct timeval tv;
62: int delay;
63:
64: delay = options_get_number(c->session->options, "display-panes-time");
65: tv.tv_sec = delay / 1000;
66: tv.tv_usec = (delay % 1000) * 1000L;
67:
68: if (event_initialized(&c->identify_timer))
69: evtimer_del(&c->identify_timer);
70: evtimer_set(&c->identify_timer, server_client_callback_identify, c);
71: evtimer_add(&c->identify_timer, &tv);
72:
73: c->flags |= CLIENT_IDENTIFY;
74: c->tty.flags |= (TTY_FREEZE|TTY_NOCURSOR);
75: server_redraw_client(c);
76: }
77:
78: /* Clear identify mode on client. */
79: void
80: server_client_clear_identify(struct client *c, struct window_pane *wp)
81: {
82: if (~c->flags & CLIENT_IDENTIFY)
83: return;
84: c->flags &= ~CLIENT_IDENTIFY;
85:
86: if (c->identify_callback != NULL)
87: c->identify_callback(c, wp);
88:
89: c->tty.flags &= ~(TTY_FREEZE|TTY_NOCURSOR);
90: server_redraw_client(c);
91: }
92:
93: /* Check if this client is inside this server. */
94: int
95: server_client_check_nested(struct client *c)
96: {
97: struct environ_entry *envent;
98: struct window_pane *wp;
99:
100: envent = environ_find(c->environ, "TMUX");
101: if (envent == NULL || *envent->value == '\0')
102: return (0);
103:
104: RB_FOREACH(wp, window_pane_tree, &all_window_panes) {
105: if (strcmp(wp->tty, c->ttyname) == 0)
106: return (1);
107: }
108: return (0);
109: }
110:
111: /* Set client key table. */
112: void
113: server_client_set_key_table(struct client *c, const char *name)
114: {
115: if (name == NULL)
116: name = server_client_get_key_table(c);
117:
118: key_bindings_unref_table(c->keytable);
119: c->keytable = key_bindings_get_table(name, 1);
120: c->keytable->references++;
121: }
122:
123: /* Get default key table. */
124: const char *
125: server_client_get_key_table(struct client *c)
126: {
127: struct session *s = c->session;
128: const char *name;
129:
130: if (s == NULL)
131: return ("root");
132:
133: name = options_get_string(s->options, "key-table");
134: if (*name == '\0')
135: return ("root");
136: return (name);
137: }
138:
139: /* Is this client using the default key table? */
140: int
141: server_client_is_default_key_table(struct client *c)
142: {
143: return (strcmp(c->keytable->name, server_client_get_key_table(c)) == 0);
144: }
145:
146: /* Create a new client. */
147: void
148: server_client_create(int fd)
149: {
150: struct client *c;
151:
152: setblocking(fd, 0);
153:
154: c = xcalloc(1, sizeof *c);
155: c->references = 1;
156: c->peer = proc_add_peer(server_proc, fd, server_client_dispatch, c);
157:
158: if (gettimeofday(&c->creation_time, NULL) != 0)
159: fatal("gettimeofday failed");
160: memcpy(&c->activity_time, &c->creation_time, sizeof c->activity_time);
161:
162: c->environ = environ_create();
163:
164: c->fd = -1;
165: c->cwd = NULL;
166:
167: TAILQ_INIT(&c->queue);
168:
169: c->stdin_data = evbuffer_new();
170: c->stdout_data = evbuffer_new();
171: c->stderr_data = evbuffer_new();
172:
173: c->tty.fd = -1;
174: c->title = NULL;
175:
176: c->session = NULL;
177: c->last_session = NULL;
178: c->tty.sx = 80;
179: c->tty.sy = 24;
180:
181: screen_init(&c->status, c->tty.sx, 1, 0);
182:
183: c->message_string = NULL;
184: TAILQ_INIT(&c->message_log);
185:
186: c->prompt_string = NULL;
187: c->prompt_buffer = NULL;
188: c->prompt_index = 0;
189:
190: c->flags |= CLIENT_FOCUSED;
191:
192: c->keytable = key_bindings_get_table("root", 1);
193: c->keytable->references++;
194:
195: evtimer_set(&c->repeat_timer, server_client_repeat_timer, c);
196: evtimer_set(&c->click_timer, server_client_click_timer, c);
197:
198: TAILQ_INSERT_TAIL(&clients, c, entry);
199: log_debug("new client %p", c);
200: }
201:
202: /* Open client terminal if needed. */
203: int
204: server_client_open(struct client *c, char **cause)
205: {
206: if (c->flags & CLIENT_CONTROL)
207: return (0);
208:
209: if (strcmp(c->ttyname, "/dev/tty") == 0) {
210: *cause = xstrdup("can't use /dev/tty");
211: return (-1);
212: }
213:
214: if (!(c->flags & CLIENT_TERMINAL)) {
215: *cause = xstrdup("not a terminal");
216: return (-1);
217: }
218:
219: if (tty_open(&c->tty, cause) != 0)
220: return (-1);
221:
222: return (0);
223: }
224:
225: /* Lost a client. */
226: void
227: server_client_lost(struct client *c)
228: {
229: struct message_entry *msg, *msg1;
230:
231: c->flags |= CLIENT_DEAD;
232:
233: server_client_clear_identify(c, NULL);
234: status_prompt_clear(c);
235: status_message_clear(c);
236:
237: if (c->stdin_callback != NULL)
238: c->stdin_callback(c, 1, c->stdin_callback_data);
239:
240: TAILQ_REMOVE(&clients, c, entry);
241: log_debug("lost client %p", c);
242:
243: /*
244: * If CLIENT_TERMINAL hasn't been set, then tty_init hasn't been called
245: * and tty_free might close an unrelated fd.
246: */
247: if (c->flags & CLIENT_TERMINAL)
248: tty_free(&c->tty);
249: free(c->ttyname);
250: free(c->term);
251:
252: evbuffer_free(c->stdin_data);
253: evbuffer_free(c->stdout_data);
254: if (c->stderr_data != c->stdout_data)
255: evbuffer_free(c->stderr_data);
256:
257: if (event_initialized(&c->status_timer))
258: evtimer_del(&c->status_timer);
259: screen_free(&c->status);
260:
261: free(c->title);
262: free((void *)c->cwd);
263:
264: evtimer_del(&c->repeat_timer);
265: evtimer_del(&c->click_timer);
266:
267: key_bindings_unref_table(c->keytable);
268:
269: if (event_initialized(&c->identify_timer))
270: evtimer_del(&c->identify_timer);
271:
272: free(c->message_string);
273: if (event_initialized(&c->message_timer))
274: evtimer_del(&c->message_timer);
275: TAILQ_FOREACH_SAFE(msg, &c->message_log, entry, msg1) {
276: free(msg->msg);
277: TAILQ_REMOVE(&c->message_log, msg, entry);
278: free(msg);
279: }
280:
281: free(c->prompt_string);
282: free(c->prompt_buffer);
283:
284: environ_free(c->environ);
285:
286: proc_remove_peer(c->peer);
287: c->peer = NULL;
288:
289: server_client_unref(c);
290:
291: server_add_accept(0); /* may be more file descriptors now */
292:
293: recalculate_sizes();
294: server_check_unattached();
295: server_update_socket();
296: }
297:
298: /* Remove reference from a client. */
299: void
300: server_client_unref(struct client *c)
301: {
302: log_debug("unref client %p (%d references)", c, c->references);
303:
304: c->references--;
305: if (c->references == 0)
306: event_once(-1, EV_TIMEOUT, server_client_free, c, NULL);
307: }
308:
309: /* Free dead client. */
310: static void
311: server_client_free(__unused int fd, __unused short events, void *arg)
312: {
313: struct client *c = arg;
314:
315: log_debug("free client %p (%d references)", c, c->references);
316:
317: if (!TAILQ_EMPTY(&c->queue))
318: fatalx("queue not empty");
319:
320: if (c->references == 0) {
321: free((void *)c->name);
322: free(c);
323: }
324: }
325:
326: /* Detach a client. */
327: void
328: server_client_detach(struct client *c, enum msgtype msgtype)
329: {
330: struct session *s = c->session;
331:
332: if (s == NULL)
333: return;
334:
335: notify_client("client-detached", c);
336: proc_send_s(c->peer, msgtype, s->name);
337: }
338:
339: /* Execute command to replace a client. */
340: void
341: server_client_exec(struct client *c, const char *cmd)
342: {
343: struct session *s = c->session;
344: char *msg;
345: const char *shell;
346: size_t cmdsize, shellsize;
347:
348: if (*cmd == '\0')
349: return;
350: cmdsize = strlen(cmd) + 1;
351:
352: if (s != NULL)
353: shell = options_get_string(s->options, "default-shell");
354: else
355: shell = options_get_string(global_s_options, "default-shell");
356: shellsize = strlen(shell) + 1;
357:
358: msg = xmalloc(cmdsize + shellsize);
359: memcpy(msg, cmd, cmdsize);
360: memcpy(msg + cmdsize, shell, shellsize);
361:
362: proc_send(c->peer, MSG_EXEC, -1, msg, cmdsize + shellsize);
363: free(msg);
364: }
365:
366: /* Check for mouse keys. */
367: static key_code
368: server_client_check_mouse(struct client *c)
369: {
370: struct session *s = c->session;
371: struct mouse_event *m = &c->tty.mouse;
372: struct window *w;
373: struct window_pane *wp;
374: u_int x, y, b;
375: int flag;
376: key_code key;
377: struct timeval tv;
378: enum { NOTYPE, MOVE, DOWN, UP, DRAG, WHEEL, DOUBLE, TRIPLE } type;
379: enum { NOWHERE, PANE, STATUS, BORDER } where;
380:
381: type = NOTYPE;
382: where = NOWHERE;
383:
384: log_debug("mouse %02x at %u,%u (last %u,%u) (%d)", m->b, m->x, m->y,
385: m->lx, m->ly, c->tty.mouse_drag_flag);
386:
387: /* What type of event is this? */
388: if ((m->sgr_type != ' ' &&
389: MOUSE_DRAG(m->sgr_b) &&
390: MOUSE_BUTTONS(m->sgr_b) == 3) ||
391: (m->sgr_type == ' ' &&
392: MOUSE_DRAG(m->b) &&
393: MOUSE_BUTTONS(m->b) == 3 &&
394: MOUSE_BUTTONS(m->lb) == 3)) {
395: type = MOVE;
396: x = m->x, y = m->y, b = 0;
397: log_debug("move at %u,%u", x, y);
398: } else if (MOUSE_DRAG(m->b)) {
399: type = DRAG;
400: if (c->tty.mouse_drag_flag) {
401: x = m->x, y = m->y, b = m->b;
402: log_debug("drag update at %u,%u", x, y);
403: } else {
404: x = m->lx, y = m->ly, b = m->lb;
405: log_debug("drag start at %u,%u", x, y);
406: }
407: } else if (MOUSE_WHEEL(m->b)) {
408: type = WHEEL;
409: x = m->x, y = m->y, b = m->b;
410: log_debug("wheel at %u,%u", x, y);
411: } else if (MOUSE_RELEASE(m->b)) {
412: type = UP;
413: x = m->x, y = m->y, b = m->lb;
414: log_debug("up at %u,%u", x, y);
415: } else {
416: if (c->flags & CLIENT_DOUBLECLICK) {
417: evtimer_del(&c->click_timer);
418: c->flags &= ~CLIENT_DOUBLECLICK;
419: if (m->b == c->click_button) {
420: type = DOUBLE;
421: x = m->x, y = m->y, b = m->b;
422: log_debug("double-click at %u,%u", x, y);
423: flag = CLIENT_TRIPLECLICK;
424: goto add_timer;
425: }
426: } else if (c->flags & CLIENT_TRIPLECLICK) {
427: evtimer_del(&c->click_timer);
428: c->flags &= ~CLIENT_TRIPLECLICK;
429: if (m->b == c->click_button) {
430: type = TRIPLE;
431: x = m->x, y = m->y, b = m->b;
432: log_debug("triple-click at %u,%u", x, y);
433: goto have_event;
434: }
435: }
436:
437: type = DOWN;
438: x = m->x, y = m->y, b = m->b;
439: log_debug("down at %u,%u", x, y);
440: flag = CLIENT_DOUBLECLICK;
441:
442: add_timer:
443: if (KEYC_CLICK_TIMEOUT != 0) {
444: c->flags |= flag;
445: c->click_button = m->b;
446:
447: tv.tv_sec = KEYC_CLICK_TIMEOUT / 1000;
448: tv.tv_usec = (KEYC_CLICK_TIMEOUT % 1000) * 1000L;
449: evtimer_del(&c->click_timer);
450: evtimer_add(&c->click_timer, &tv);
451: }
452: }
453:
454: have_event:
455: if (type == NOTYPE)
456: return (KEYC_UNKNOWN);
457:
458: /* Always save the session. */
459: m->s = s->id;
460:
461: /* Is this on the status line? */
462: m->statusat = status_at_line(c);
463: if (m->statusat != -1 && y == (u_int)m->statusat) {
464: w = status_get_window_at(c, x);
465: if (w == NULL)
466: return (KEYC_UNKNOWN);
467: m->w = w->id;
468: where = STATUS;
469: } else
470: m->w = -1;
471:
472: /* Not on status line. Adjust position and check for border or pane. */
473: if (where == NOWHERE) {
474: if (m->statusat == 0 && y > 0)
475: y--;
476: else if (m->statusat > 0 && y >= (u_int)m->statusat)
477: y = m->statusat - 1;
478:
479: TAILQ_FOREACH(wp, &s->curw->window->panes, entry) {
480: if ((wp->xoff + wp->sx == x &&
481: wp->yoff <= 1 + y &&
482: wp->yoff + wp->sy >= y) ||
483: (wp->yoff + wp->sy == y &&
484: wp->xoff <= 1 + x &&
485: wp->xoff + wp->sx >= x))
486: break;
487: }
488: if (wp != NULL)
489: where = BORDER;
490: else {
491: wp = window_get_active_at(s->curw->window, x, y);
492: if (wp != NULL) {
493: where = PANE;
494: log_debug("mouse at %u,%u is on pane %%%u",
495: x, y, wp->id);
496: }
497: }
498: if (where == NOWHERE)
499: return (KEYC_UNKNOWN);
500: m->wp = wp->id;
501: m->w = wp->window->id;
502: } else
503: m->wp = -1;
504:
505: /* Stop dragging if needed. */
506: if (type != DRAG && type != WHEEL && c->tty.mouse_drag_flag) {
507: if (c->tty.mouse_drag_release != NULL)
508: c->tty.mouse_drag_release(c, m);
509:
510: c->tty.mouse_drag_update = NULL;
511: c->tty.mouse_drag_release = NULL;
512:
513: /*
514: * End a mouse drag by passing a MouseDragEnd key corresponding
515: * to the button that started the drag.
516: */
517: switch (c->tty.mouse_drag_flag) {
518: case 1:
519: if (where == PANE)
520: key = KEYC_MOUSEDRAGEND1_PANE;
521: if (where == STATUS)
522: key = KEYC_MOUSEDRAGEND1_STATUS;
523: if (where == BORDER)
524: key = KEYC_MOUSEDRAGEND1_BORDER;
525: break;
526: case 2:
527: if (where == PANE)
528: key = KEYC_MOUSEDRAGEND2_PANE;
529: if (where == STATUS)
530: key = KEYC_MOUSEDRAGEND2_STATUS;
531: if (where == BORDER)
532: key = KEYC_MOUSEDRAGEND2_BORDER;
533: break;
534: case 3:
535: if (where == PANE)
536: key = KEYC_MOUSEDRAGEND3_PANE;
537: if (where == STATUS)
538: key = KEYC_MOUSEDRAGEND3_STATUS;
539: if (where == BORDER)
540: key = KEYC_MOUSEDRAGEND3_BORDER;
541: break;
542: default:
543: key = KEYC_MOUSE;
544: break;
545: }
546: c->tty.mouse_drag_flag = 0;
547:
548: return (key);
549: }
550:
551: /* Convert to a key binding. */
552: key = KEYC_UNKNOWN;
553: switch (type) {
554: case NOTYPE:
555: break;
556: case MOVE:
557: if (where == PANE)
558: key = KEYC_MOUSEMOVE_PANE;
559: if (where == STATUS)
560: key = KEYC_MOUSEMOVE_STATUS;
561: if (where == BORDER)
562: key = KEYC_MOUSEMOVE_BORDER;
563: break;
564: case DRAG:
565: if (c->tty.mouse_drag_update != NULL)
566: key = KEYC_DRAGGING;
567: else {
568: switch (MOUSE_BUTTONS(b)) {
569: case 0:
570: if (where == PANE)
571: key = KEYC_MOUSEDRAG1_PANE;
572: if (where == STATUS)
573: key = KEYC_MOUSEDRAG1_STATUS;
574: if (where == BORDER)
575: key = KEYC_MOUSEDRAG1_BORDER;
576: break;
577: case 1:
578: if (where == PANE)
579: key = KEYC_MOUSEDRAG2_PANE;
580: if (where == STATUS)
581: key = KEYC_MOUSEDRAG2_STATUS;
582: if (where == BORDER)
583: key = KEYC_MOUSEDRAG2_BORDER;
584: break;
585: case 2:
586: if (where == PANE)
587: key = KEYC_MOUSEDRAG3_PANE;
588: if (where == STATUS)
589: key = KEYC_MOUSEDRAG3_STATUS;
590: if (where == BORDER)
591: key = KEYC_MOUSEDRAG3_BORDER;
592: break;
593: }
594: }
595:
596: /*
597: * Begin a drag by setting the flag to a non-zero value that
598: * corresponds to the mouse button in use.
599: */
600: c->tty.mouse_drag_flag = MOUSE_BUTTONS(b) + 1;
601: break;
602: case WHEEL:
603: if (MOUSE_BUTTONS(b) == MOUSE_WHEEL_UP) {
604: if (where == PANE)
605: key = KEYC_WHEELUP_PANE;
606: if (where == STATUS)
607: key = KEYC_WHEELUP_STATUS;
608: if (where == BORDER)
609: key = KEYC_WHEELUP_BORDER;
610: } else {
611: if (where == PANE)
612: key = KEYC_WHEELDOWN_PANE;
613: if (where == STATUS)
614: key = KEYC_WHEELDOWN_STATUS;
615: if (where == BORDER)
616: key = KEYC_WHEELDOWN_BORDER;
617: }
618: break;
619: case UP:
620: switch (MOUSE_BUTTONS(b)) {
621: case 0:
622: if (where == PANE)
623: key = KEYC_MOUSEUP1_PANE;
624: if (where == STATUS)
625: key = KEYC_MOUSEUP1_STATUS;
626: if (where == BORDER)
627: key = KEYC_MOUSEUP1_BORDER;
628: break;
629: case 1:
630: if (where == PANE)
631: key = KEYC_MOUSEUP2_PANE;
632: if (where == STATUS)
633: key = KEYC_MOUSEUP2_STATUS;
634: if (where == BORDER)
635: key = KEYC_MOUSEUP2_BORDER;
636: break;
637: case 2:
638: if (where == PANE)
639: key = KEYC_MOUSEUP3_PANE;
640: if (where == STATUS)
641: key = KEYC_MOUSEUP3_STATUS;
642: if (where == BORDER)
643: key = KEYC_MOUSEUP3_BORDER;
644: break;
645: }
646: break;
647: case DOWN:
648: switch (MOUSE_BUTTONS(b)) {
649: case 0:
650: if (where == PANE)
651: key = KEYC_MOUSEDOWN1_PANE;
652: if (where == STATUS)
653: key = KEYC_MOUSEDOWN1_STATUS;
654: if (where == BORDER)
655: key = KEYC_MOUSEDOWN1_BORDER;
656: break;
657: case 1:
658: if (where == PANE)
659: key = KEYC_MOUSEDOWN2_PANE;
660: if (where == STATUS)
661: key = KEYC_MOUSEDOWN2_STATUS;
662: if (where == BORDER)
663: key = KEYC_MOUSEDOWN2_BORDER;
664: break;
665: case 2:
666: if (where == PANE)
667: key = KEYC_MOUSEDOWN3_PANE;
668: if (where == STATUS)
669: key = KEYC_MOUSEDOWN3_STATUS;
670: if (where == BORDER)
671: key = KEYC_MOUSEDOWN3_BORDER;
672: break;
673: }
674: break;
675: case DOUBLE:
676: switch (MOUSE_BUTTONS(b)) {
677: case 0:
678: if (where == PANE)
679: key = KEYC_DOUBLECLICK1_PANE;
680: if (where == STATUS)
681: key = KEYC_DOUBLECLICK1_STATUS;
682: if (where == BORDER)
683: key = KEYC_DOUBLECLICK1_BORDER;
684: break;
685: case 1:
686: if (where == PANE)
687: key = KEYC_DOUBLECLICK2_PANE;
688: if (where == STATUS)
689: key = KEYC_DOUBLECLICK2_STATUS;
690: if (where == BORDER)
691: key = KEYC_DOUBLECLICK2_BORDER;
692: break;
693: case 2:
694: if (where == PANE)
695: key = KEYC_DOUBLECLICK3_PANE;
696: if (where == STATUS)
697: key = KEYC_DOUBLECLICK3_STATUS;
698: if (where == BORDER)
699: key = KEYC_DOUBLECLICK3_BORDER;
700: break;
701: }
702: break;
703: case TRIPLE:
704: switch (MOUSE_BUTTONS(b)) {
705: case 0:
706: if (where == PANE)
707: key = KEYC_TRIPLECLICK1_PANE;
708: if (where == STATUS)
709: key = KEYC_TRIPLECLICK1_STATUS;
710: if (where == BORDER)
711: key = KEYC_TRIPLECLICK1_BORDER;
712: break;
713: case 1:
714: if (where == PANE)
715: key = KEYC_TRIPLECLICK2_PANE;
716: if (where == STATUS)
717: key = KEYC_TRIPLECLICK2_STATUS;
718: if (where == BORDER)
719: key = KEYC_TRIPLECLICK2_BORDER;
720: break;
721: case 2:
722: if (where == PANE)
723: key = KEYC_TRIPLECLICK3_PANE;
724: if (where == STATUS)
725: key = KEYC_TRIPLECLICK3_STATUS;
726: if (where == BORDER)
727: key = KEYC_TRIPLECLICK3_BORDER;
728: break;
729: }
730: break;
731: }
732: if (key == KEYC_UNKNOWN)
733: return (KEYC_UNKNOWN);
734:
735: /* Apply modifiers if any. */
736: if (b & MOUSE_MASK_META)
737: key |= KEYC_ESCAPE;
738: if (b & MOUSE_MASK_CTRL)
739: key |= KEYC_CTRL;
740: if (b & MOUSE_MASK_SHIFT)
741: key |= KEYC_SHIFT;
742:
743: return (key);
744: }
745:
746: /* Is this fast enough to probably be a paste? */
747: static int
748: server_client_assume_paste(struct session *s)
749: {
750: struct timeval tv;
751: int t;
752:
753: if ((t = options_get_number(s->options, "assume-paste-time")) == 0)
754: return (0);
755:
756: timersub(&s->activity_time, &s->last_activity_time, &tv);
757: if (tv.tv_sec == 0 && tv.tv_usec < t * 1000) {
758: log_debug("session %s pasting (flag %d)", s->name,
759: !!(s->flags & SESSION_PASTING));
760: if (s->flags & SESSION_PASTING)
761: return (1);
762: s->flags |= SESSION_PASTING;
763: return (0);
764: }
765: log_debug("session %s not pasting", s->name);
766: s->flags &= ~SESSION_PASTING;
767: return (0);
768: }
769:
770: /* Handle data key input from client. */
771: void
772: server_client_handle_key(struct client *c, key_code key)
773: {
774: struct mouse_event *m = &c->tty.mouse;
775: struct session *s = c->session;
776: struct window *w;
777: struct window_pane *wp;
778: struct timeval tv;
779: const char *name;
780: struct key_table *table;
781: struct key_binding bd_find, *bd;
782: int xtimeout;
783: struct cmd_find_state fs;
784:
785: /* Check the client is good to accept input. */
786: if (s == NULL || (c->flags & (CLIENT_DEAD|CLIENT_SUSPENDED)) != 0)
787: return;
788: w = s->curw->window;
789:
790: /* Update the activity timer. */
791: if (gettimeofday(&c->activity_time, NULL) != 0)
792: fatal("gettimeofday failed");
793: session_update_activity(s, &c->activity_time);
794:
795: /* Number keys jump to pane in identify mode. */
796: if (c->flags & CLIENT_IDENTIFY && key >= '0' && key <= '9') {
797: if (c->flags & CLIENT_READONLY)
798: return;
799: window_unzoom(w);
800: wp = window_pane_at_index(w, key - '0');
801: if (wp != NULL && !window_pane_visible(wp))
802: wp = NULL;
803: server_client_clear_identify(c, wp);
804: return;
805: }
806:
807: /* Handle status line. */
808: if (!(c->flags & CLIENT_READONLY)) {
809: status_message_clear(c);
810: server_client_clear_identify(c, NULL);
811: }
812: if (c->prompt_string != NULL) {
813: if (c->flags & CLIENT_READONLY)
814: return;
815: if (status_prompt_key(c, key) == 0)
816: return;
817: }
818:
819: /* Check for mouse keys. */
820: m->valid = 0;
821: if (key == KEYC_MOUSE) {
822: if (c->flags & CLIENT_READONLY)
823: return;
824: key = server_client_check_mouse(c);
825: if (key == KEYC_UNKNOWN)
826: return;
827:
828: m->valid = 1;
829: m->key = key;
830:
831: /*
832: * Mouse drag is in progress, so fire the callback (now that
833: * the mouse event is valid).
834: */
835: if (key == KEYC_DRAGGING) {
836: c->tty.mouse_drag_update(c, m);
837: return;
838: }
839: } else
840: m->valid = 0;
841:
842: /* Find affected pane. */
843: if (KEYC_IS_MOUSE(key) && m->valid)
844: wp = cmd_mouse_pane(m, NULL, NULL);
845: else
846: wp = w->active;
847:
848: /* Forward mouse keys if disabled. */
849: if (KEYC_IS_MOUSE(key) && !options_get_number(s->options, "mouse"))
850: goto forward;
851:
852: /* Treat everything as a regular key when pasting is detected. */
853: if (!KEYC_IS_MOUSE(key) && server_client_assume_paste(s))
854: goto forward;
855:
856: retry:
857: /*
858: * Work out the current key table. If the pane is in a mode, use
859: * the mode table instead of the default key table.
860: */
861: name = NULL;
862: if (wp != NULL && wp->mode != NULL && wp->mode->key_table != NULL)
863: name = wp->mode->key_table(wp);
864: if (name == NULL || !server_client_is_default_key_table(c))
865: table = c->keytable;
866: else
867: table = key_bindings_get_table(name, 1);
868: if (wp == NULL)
869: log_debug("key table %s (no pane)", table->name);
870: else
871: log_debug("key table %s (pane %%%u)", table->name, wp->id);
872:
873: /*
874: * The prefix always takes precedence and forces a switch to the prefix
875: * table, unless we are already there.
876: */
877: if ((key == (key_code)options_get_number(s->options, "prefix") ||
878: key == (key_code)options_get_number(s->options, "prefix2")) &&
879: strcmp(table->name, "prefix") != 0) {
880: server_client_set_key_table(c, "prefix");
881: server_status_client(c);
882: return;
883: }
884:
885: /* Try to see if there is a key binding in the current table. */
886: bd_find.key = key;
887: bd = RB_FIND(key_bindings, &table->key_bindings, &bd_find);
888: if (bd != NULL) {
889: /*
890: * Key was matched in this table. If currently repeating but a
891: * non-repeating binding was found, stop repeating and try
892: * again in the root table.
893: */
894: if ((c->flags & CLIENT_REPEAT) && !bd->can_repeat) {
895: server_client_set_key_table(c, NULL);
896: c->flags &= ~CLIENT_REPEAT;
897: server_status_client(c);
898: goto retry;
899: }
900:
901: /*
902: * Take a reference to this table to make sure the key binding
903: * doesn't disappear.
904: */
905: table->references++;
906:
907: /*
908: * If this is a repeating key, start the timer. Otherwise reset
909: * the client back to the root table.
910: */
911: xtimeout = options_get_number(s->options, "repeat-time");
912: if (xtimeout != 0 && bd->can_repeat) {
913: c->flags |= CLIENT_REPEAT;
914:
915: tv.tv_sec = xtimeout / 1000;
916: tv.tv_usec = (xtimeout % 1000) * 1000L;
917: evtimer_del(&c->repeat_timer);
918: evtimer_add(&c->repeat_timer, &tv);
919: } else {
920: c->flags &= ~CLIENT_REPEAT;
921: server_client_set_key_table(c, NULL);
922: }
923: server_status_client(c);
924:
925: /* Find default state if the pane is known. */
926: cmd_find_clear_state(&fs, NULL, 0);
927: if (wp != NULL) {
928: fs.s = s;
929: fs.wl = fs.s->curw;
930: fs.w = fs.wl->window;
931: fs.wp = wp;
932: cmd_find_log_state(__func__, &fs);
933:
934: if (!cmd_find_valid_state(&fs))
935: fatalx("invalid key state");
936: }
937:
938: /* Dispatch the key binding. */
939: key_bindings_dispatch(bd, c, m, &fs);
940: key_bindings_unref_table(table);
941: return;
942: }
943:
944: /*
945: * No match in this table. If repeating, switch the client back to the
946: * root table and try again.
947: */
948: if (c->flags & CLIENT_REPEAT) {
949: server_client_set_key_table(c, NULL);
950: c->flags &= ~CLIENT_REPEAT;
951: server_status_client(c);
952: goto retry;
953: }
954:
955: /* If no match and we're not in the root table, that's it. */
956: if (name == NULL && !server_client_is_default_key_table(c)) {
957: log_debug("no key in key table %s", table->name);
958: server_client_set_key_table(c, NULL);
959: server_status_client(c);
960: return;
961: }
962:
963: forward:
964: if (c->flags & CLIENT_READONLY)
965: return;
966: if (wp != NULL)
967: window_pane_key(wp, c, s, key, m);
968: }
969:
970: /* Client functions that need to happen every loop. */
971: void
972: server_client_loop(void)
973: {
974: struct client *c;
975: struct window *w;
976: struct window_pane *wp;
977: int focus;
978:
979: TAILQ_FOREACH(c, &clients, entry) {
980: server_client_check_exit(c);
981: if (c->session != NULL) {
982: server_client_check_redraw(c);
983: server_client_reset_state(c);
984: }
985: }
986:
987: /*
988: * Any windows will have been redrawn as part of clients, so clear
989: * their flags now. Also check pane focus and resize.
990: */
991: focus = options_get_number(global_options, "focus-events");
992: RB_FOREACH(w, windows, &windows) {
993: TAILQ_FOREACH(wp, &w->panes, entry) {
994: if (wp->fd != -1) {
995: if (focus)
996: server_client_check_focus(wp);
997: server_client_check_resize(wp);
998: }
999: wp->flags &= ~PANE_REDRAW;
1000: }
1001: check_window_name(w);
1002: }
1003: }
1004:
1005: /* Resize timer event. */
1006: static void
1007: server_client_resize_event(__unused int fd, __unused short events, void *data)
1008: {
1009: struct window_pane *wp = data;
1010: struct winsize ws;
1011:
1012: evtimer_del(&wp->resize_timer);
1013:
1014: if (!(wp->flags & PANE_RESIZE))
1015: return;
1016:
1017: memset(&ws, 0, sizeof ws);
1018: ws.ws_col = wp->sx;
1019: ws.ws_row = wp->sy;
1020:
1021: if (ioctl(wp->fd, TIOCSWINSZ, &ws) == -1) {
1022: #ifdef __sun
1023: /*
1024: * Some versions of Solaris apparently can return an error when
1025: * resizing; don't know why this happens, can't reproduce on
1026: * other platforms and ignoring it doesn't seem to cause any
1027: * issues.
1028: */
1029: if (errno != EINVAL && errno != ENXIO)
1030: #endif
1031: fatal("ioctl failed");
1032: }
1033:
1034: wp->flags &= ~PANE_RESIZE;
1035: }
1036:
1037: /* Check if pane should be resized. */
1038: static void
1039: server_client_check_resize(struct window_pane *wp)
1040: {
1041: struct timeval tv = { .tv_usec = 250000 };
1042:
1043: if (!(wp->flags & PANE_RESIZE))
1044: return;
1045:
1046: if (!event_initialized(&wp->resize_timer))
1047: evtimer_set(&wp->resize_timer, server_client_resize_event, wp);
1048:
1049: /*
1050: * The first resize should happen immediately, so if the timer is not
1051: * running, do it now.
1052: */
1053: if (!evtimer_pending(&wp->resize_timer, NULL))
1054: server_client_resize_event(-1, 0, wp);
1055:
1056: /*
1057: * If the pane is in the alternate screen, let the timer expire and
1058: * resize to give the application a chance to redraw. If not, keep
1059: * pushing the timer back.
1060: */
1061: if (wp->saved_grid != NULL && evtimer_pending(&wp->resize_timer, NULL))
1062: return;
1063: evtimer_del(&wp->resize_timer);
1064: evtimer_add(&wp->resize_timer, &tv);
1065: }
1066:
1067: /* Check whether pane should be focused. */
1068: static void
1069: server_client_check_focus(struct window_pane *wp)
1070: {
1071: struct client *c;
1072: int push;
1073:
1074: /* Do we need to push the focus state? */
1075: push = wp->flags & PANE_FOCUSPUSH;
1076: wp->flags &= ~PANE_FOCUSPUSH;
1077:
1078: /* If we don't care about focus, forget it. */
1079: if (!(wp->base.mode & MODE_FOCUSON))
1080: return;
1081:
1082: /* If we're not the active pane in our window, we're not focused. */
1083: if (wp->window->active != wp)
1084: goto not_focused;
1085:
1086: /* If we're in a mode, we're not focused. */
1087: if (wp->screen != &wp->base)
1088: goto not_focused;
1089:
1090: /*
1091: * If our window is the current window in any focused clients with an
1092: * attached session, we're focused.
1093: */
1094: TAILQ_FOREACH(c, &clients, entry) {
1095: if (c->session == NULL || !(c->flags & CLIENT_FOCUSED))
1096: continue;
1097: if (c->session->flags & SESSION_UNATTACHED)
1098: continue;
1099:
1100: if (c->session->curw->window == wp->window)
1101: goto focused;
1102: }
1103:
1104: not_focused:
1105: if (push || (wp->flags & PANE_FOCUSED))
1106: bufferevent_write(wp->event, "\033[O", 3);
1107: wp->flags &= ~PANE_FOCUSED;
1108: return;
1109:
1110: focused:
1111: if (push || !(wp->flags & PANE_FOCUSED))
1112: bufferevent_write(wp->event, "\033[I", 3);
1113: wp->flags |= PANE_FOCUSED;
1114: }
1115:
1116: /*
1117: * Update cursor position and mode settings. The scroll region and attributes
1118: * are cleared when idle (waiting for an event) as this is the most likely time
1119: * a user may interrupt tmux, for example with ~^Z in ssh(1). This is a
1120: * compromise between excessive resets and likelihood of an interrupt.
1121: *
1122: * tty_region/tty_reset/tty_update_mode already take care of not resetting
1123: * things that are already in their default state.
1124: */
1125: static void
1126: server_client_reset_state(struct client *c)
1127: {
1128: struct window *w = c->session->curw->window;
1129: struct window_pane *wp = w->active, *loop;
1130: struct screen *s = wp->screen;
1131: struct options *oo = c->session->options;
1132: int status, mode, o;
1133:
1134: if (c->flags & (CLIENT_CONTROL|CLIENT_SUSPENDED))
1135: return;
1136:
1137: tty_region_off(&c->tty);
1138: tty_margin_off(&c->tty);
1139:
1140: status = options_get_number(oo, "status");
1141: if (!window_pane_visible(wp) || wp->yoff + s->cy >= c->tty.sy - status)
1142: tty_cursor(&c->tty, 0, 0);
1143: else {
1144: o = status && options_get_number(oo, "status-position") == 0;
1145: tty_cursor(&c->tty, wp->xoff + s->cx, o + wp->yoff + s->cy);
1146: }
1147:
1148: /*
1149: * Set mouse mode if requested. To support dragging, always use button
1150: * mode.
1151: */
1152: mode = s->mode;
1153: if (options_get_number(oo, "mouse")) {
1154: mode &= ~ALL_MOUSE_MODES;
1155: TAILQ_FOREACH(loop, &w->panes, entry) {
1156: if (loop->screen->mode & MODE_MOUSE_ALL)
1157: mode |= MODE_MOUSE_ALL;
1158: }
1159: if (~mode & MODE_MOUSE_ALL)
1160: mode |= MODE_MOUSE_BUTTON;
1161: }
1162:
1163: /* Clear bracketed paste mode if at the prompt. */
1164: if (c->prompt_string != NULL)
1165: mode &= ~MODE_BRACKETPASTE;
1166:
1167: /* Set the terminal mode and reset attributes. */
1168: tty_update_mode(&c->tty, mode, s);
1169: tty_reset(&c->tty);
1170: }
1171:
1172: /* Repeat time callback. */
1173: static void
1174: server_client_repeat_timer(__unused int fd, __unused short events, void *data)
1175: {
1176: struct client *c = data;
1177:
1178: if (c->flags & CLIENT_REPEAT) {
1179: server_client_set_key_table(c, NULL);
1180: c->flags &= ~CLIENT_REPEAT;
1181: server_status_client(c);
1182: }
1183: }
1184:
1185: /* Double-click callback. */
1186: static void
1187: server_client_click_timer(__unused int fd, __unused short events, void *data)
1188: {
1189: struct client *c = data;
1190:
1191: c->flags &= ~(CLIENT_DOUBLECLICK|CLIENT_TRIPLECLICK);
1192: }
1193:
1194: /* Check if client should be exited. */
1195: static void
1196: server_client_check_exit(struct client *c)
1197: {
1198: if (!(c->flags & CLIENT_EXIT))
1199: return;
1200:
1201: if (EVBUFFER_LENGTH(c->stdin_data) != 0)
1202: return;
1203: if (EVBUFFER_LENGTH(c->stdout_data) != 0)
1204: return;
1205: if (EVBUFFER_LENGTH(c->stderr_data) != 0)
1206: return;
1207:
1208: proc_send(c->peer, MSG_EXIT, -1, &c->retval, sizeof c->retval);
1209: c->flags &= ~CLIENT_EXIT;
1210: }
1211:
1212: /* Check for client redraws. */
1213: static void
1214: server_client_check_redraw(struct client *c)
1215: {
1216: struct session *s = c->session;
1217: struct tty *tty = &c->tty;
1218: struct window_pane *wp;
1219: int flags, masked;
1220:
1221: if (c->flags & (CLIENT_CONTROL|CLIENT_SUSPENDED))
1222: return;
1223:
1224: if (c->flags & (CLIENT_REDRAW|CLIENT_STATUS)) {
1225: if (options_get_number(s->options, "set-titles"))
1226: server_client_set_title(c);
1227: screen_redraw_update(c); /* will adjust flags */
1228: }
1229:
1230: flags = tty->flags & (TTY_FREEZE|TTY_NOCURSOR);
1231: tty->flags = (tty->flags & ~TTY_FREEZE) | TTY_NOCURSOR;
1232:
1233: if (c->flags & CLIENT_REDRAW) {
1234: tty_update_mode(tty, tty->mode, NULL);
1235: screen_redraw_screen(c, 1, 1, 1);
1236: c->flags &= ~(CLIENT_STATUS|CLIENT_BORDERS);
1237: } else {
1238: TAILQ_FOREACH(wp, &c->session->curw->window->panes, entry) {
1239: if (wp->flags & PANE_REDRAW) {
1240: tty_update_mode(tty, tty->mode, NULL);
1241: screen_redraw_pane(c, wp);
1242: }
1243: }
1244: }
1245:
1246: masked = c->flags & (CLIENT_BORDERS|CLIENT_STATUS);
1247: if (masked != 0)
1248: tty_update_mode(tty, tty->mode, NULL);
1249: if (masked == CLIENT_BORDERS)
1250: screen_redraw_screen(c, 0, 0, 1);
1251: else if (masked == CLIENT_STATUS)
1252: screen_redraw_screen(c, 0, 1, 0);
1253: else if (masked != 0)
1254: screen_redraw_screen(c, 0, 1, 1);
1255:
1256: tty->flags = (tty->flags & ~(TTY_FREEZE|TTY_NOCURSOR)) | flags;
1257: tty_update_mode(tty, tty->mode, NULL);
1258:
1259: c->flags &= ~(CLIENT_REDRAW|CLIENT_BORDERS|CLIENT_STATUS|
1260: CLIENT_STATUSFORCE);
1261: }
1262:
1263: /* Set client title. */
1264: static void
1265: server_client_set_title(struct client *c)
1266: {
1267: struct session *s = c->session;
1268: const char *template;
1269: char *title;
1270: struct format_tree *ft;
1271:
1272: template = options_get_string(s->options, "set-titles-string");
1273:
1274: ft = format_create(NULL, FORMAT_NONE, 0);
1275: format_defaults(ft, c, NULL, NULL, NULL);
1276:
1277: title = format_expand_time(ft, template, time(NULL));
1278: if (c->title == NULL || strcmp(title, c->title) != 0) {
1279: free(c->title);
1280: c->title = xstrdup(title);
1281: tty_set_title(&c->tty, c->title);
1282: }
1283: free(title);
1284:
1285: format_free(ft);
1286: }
1287:
1288: /* Dispatch message from client. */
1289: static void
1290: server_client_dispatch(struct imsg *imsg, void *arg)
1291: {
1292: struct client *c = arg;
1293: struct msg_stdin_data stdindata;
1294: const char *data;
1295: ssize_t datalen;
1296: struct session *s;
1297:
1298: if (c->flags & CLIENT_DEAD)
1299: return;
1300:
1301: if (imsg == NULL) {
1302: server_client_lost(c);
1303: return;
1304: }
1305:
1306: data = imsg->data;
1307: datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1308:
1309: switch (imsg->hdr.type) {
1310: case MSG_IDENTIFY_FLAGS:
1311: case MSG_IDENTIFY_TERM:
1312: case MSG_IDENTIFY_TTYNAME:
1313: case MSG_IDENTIFY_CWD:
1314: case MSG_IDENTIFY_STDIN:
1315: case MSG_IDENTIFY_ENVIRON:
1316: case MSG_IDENTIFY_CLIENTPID:
1317: case MSG_IDENTIFY_DONE:
1318: server_client_dispatch_identify(c, imsg);
1319: break;
1320: case MSG_COMMAND:
1321: server_client_dispatch_command(c, imsg);
1322: break;
1323: case MSG_STDIN:
1324: if (datalen != sizeof stdindata)
1325: fatalx("bad MSG_STDIN size");
1326: memcpy(&stdindata, data, sizeof stdindata);
1327:
1328: if (c->stdin_callback == NULL)
1329: break;
1330: if (stdindata.size <= 0)
1331: c->stdin_closed = 1;
1332: else {
1333: evbuffer_add(c->stdin_data, stdindata.data,
1334: stdindata.size);
1335: }
1336: c->stdin_callback(c, c->stdin_closed,
1337: c->stdin_callback_data);
1338: break;
1339: case MSG_RESIZE:
1340: if (datalen != 0)
1341: fatalx("bad MSG_RESIZE size");
1342:
1343: if (c->flags & CLIENT_CONTROL)
1344: break;
1345: if (tty_resize(&c->tty)) {
1346: recalculate_sizes();
1347: server_redraw_client(c);
1348: }
1349: if (c->session != NULL)
1350: notify_client("client-resized", c);
1351: break;
1352: case MSG_EXITING:
1353: if (datalen != 0)
1354: fatalx("bad MSG_EXITING size");
1355:
1356: c->session = NULL;
1357: tty_close(&c->tty);
1358: proc_send(c->peer, MSG_EXITED, -1, NULL, 0);
1359: break;
1360: case MSG_WAKEUP:
1361: case MSG_UNLOCK:
1362: if (datalen != 0)
1363: fatalx("bad MSG_WAKEUP size");
1364:
1365: if (!(c->flags & CLIENT_SUSPENDED))
1366: break;
1367: c->flags &= ~CLIENT_SUSPENDED;
1368:
1369: if (c->tty.fd == -1) /* exited in the meantime */
1370: break;
1371: s = c->session;
1372:
1373: if (gettimeofday(&c->activity_time, NULL) != 0)
1374: fatal("gettimeofday failed");
1375:
1376: tty_start_tty(&c->tty);
1377: server_redraw_client(c);
1378: recalculate_sizes();
1379:
1380: if (s != NULL)
1381: session_update_activity(s, &c->activity_time);
1382: break;
1383: case MSG_SHELL:
1384: if (datalen != 0)
1385: fatalx("bad MSG_SHELL size");
1386:
1387: server_client_dispatch_shell(c);
1388: break;
1389: }
1390: }
1391:
1392: /* Callback when command is done. */
1393: static enum cmd_retval
1394: server_client_command_done(struct cmdq_item *item, __unused void *data)
1395: {
1396: struct client *c = item->client;
1397:
1398: if (~c->flags & CLIENT_ATTACHED)
1399: c->flags |= CLIENT_EXIT;
1400: return (CMD_RETURN_NORMAL);
1401: }
1402:
1403: /* Show an error message. */
1404: static enum cmd_retval
1405: server_client_command_error(struct cmdq_item *item, void *data)
1406: {
1407: char *error = data;
1408:
1409: cmdq_error(item, "%s", error);
1410: free(error);
1411:
1412: return (CMD_RETURN_NORMAL);
1413: }
1414:
1415: /* Handle command message. */
1416: static void
1417: server_client_dispatch_command(struct client *c, struct imsg *imsg)
1418: {
1419: struct msg_command_data data;
1420: char *buf;
1421: size_t len;
1422: struct cmd_list *cmdlist = NULL;
1423: int argc;
1424: char **argv, *cause;
1425:
1426: if (imsg->hdr.len - IMSG_HEADER_SIZE < sizeof data)
1427: fatalx("bad MSG_COMMAND size");
1428: memcpy(&data, imsg->data, sizeof data);
1429:
1430: buf = (char *)imsg->data + sizeof data;
1431: len = imsg->hdr.len - IMSG_HEADER_SIZE - sizeof data;
1432: if (len > 0 && buf[len - 1] != '\0')
1433: fatalx("bad MSG_COMMAND string");
1434:
1435: argc = data.argc;
1436: if (cmd_unpack_argv(buf, len, argc, &argv) != 0) {
1437: cause = xstrdup("command too long");
1438: goto error;
1439: }
1440:
1441: if (argc == 0) {
1442: argc = 1;
1443: argv = xcalloc(1, sizeof *argv);
1444: *argv = xstrdup("new-session");
1445: }
1446:
1447: if ((cmdlist = cmd_list_parse(argc, argv, NULL, 0, &cause)) == NULL) {
1448: cmd_free_argv(argc, argv);
1449: goto error;
1450: }
1451: cmd_free_argv(argc, argv);
1452:
1453: cmdq_append(c, cmdq_get_command(cmdlist, NULL, NULL, 0));
1454: cmdq_append(c, cmdq_get_callback(server_client_command_done, NULL));
1455: cmd_list_free(cmdlist);
1456: return;
1457:
1458: error:
1459: cmdq_append(c, cmdq_get_callback(server_client_command_error, cause));
1460:
1461: if (cmdlist != NULL)
1462: cmd_list_free(cmdlist);
1463:
1464: c->flags |= CLIENT_EXIT;
1465: }
1466:
1467: /* Handle identify message. */
1468: static void
1469: server_client_dispatch_identify(struct client *c, struct imsg *imsg)
1470: {
1471: const char *data, *home;
1472: size_t datalen;
1473: int flags;
1474: char *name;
1475:
1476: if (c->flags & CLIENT_IDENTIFIED)
1477: fatalx("out-of-order identify message");
1478:
1479: data = imsg->data;
1480: datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1481:
1482: switch (imsg->hdr.type) {
1483: case MSG_IDENTIFY_FLAGS:
1484: if (datalen != sizeof flags)
1485: fatalx("bad MSG_IDENTIFY_FLAGS size");
1486: memcpy(&flags, data, sizeof flags);
1487: c->flags |= flags;
1488: log_debug("client %p IDENTIFY_FLAGS %#x", c, flags);
1489: break;
1490: case MSG_IDENTIFY_TERM:
1491: if (datalen == 0 || data[datalen - 1] != '\0')
1492: fatalx("bad MSG_IDENTIFY_TERM string");
1493: c->term = xstrdup(data);
1494: log_debug("client %p IDENTIFY_TERM %s", c, data);
1495: break;
1496: case MSG_IDENTIFY_TTYNAME:
1497: if (datalen == 0 || data[datalen - 1] != '\0')
1498: fatalx("bad MSG_IDENTIFY_TTYNAME string");
1499: c->ttyname = xstrdup(data);
1500: log_debug("client %p IDENTIFY_TTYNAME %s", c, data);
1501: break;
1502: case MSG_IDENTIFY_CWD:
1503: if (datalen == 0 || data[datalen - 1] != '\0')
1504: fatalx("bad MSG_IDENTIFY_CWD string");
1505: if (access(data, X_OK) == 0)
1506: c->cwd = xstrdup(data);
1507: else if ((home = find_home()) != NULL)
1508: c->cwd = xstrdup(home);
1509: else
1510: c->cwd = xstrdup("/");
1511: log_debug("client %p IDENTIFY_CWD %s", c, data);
1512: break;
1513: case MSG_IDENTIFY_STDIN:
1514: if (datalen != 0)
1515: fatalx("bad MSG_IDENTIFY_STDIN size");
1516: c->fd = imsg->fd;
1517: log_debug("client %p IDENTIFY_STDIN %d", c, imsg->fd);
1518: break;
1519: case MSG_IDENTIFY_ENVIRON:
1520: if (datalen == 0 || data[datalen - 1] != '\0')
1521: fatalx("bad MSG_IDENTIFY_ENVIRON string");
1522: if (strchr(data, '=') != NULL)
1523: environ_put(c->environ, data);
1524: log_debug("client %p IDENTIFY_ENVIRON %s", c, data);
1525: break;
1526: case MSG_IDENTIFY_CLIENTPID:
1527: if (datalen != sizeof c->pid)
1528: fatalx("bad MSG_IDENTIFY_CLIENTPID size");
1529: memcpy(&c->pid, data, sizeof c->pid);
1530: log_debug("client %p IDENTIFY_CLIENTPID %ld", c, (long)c->pid);
1531: break;
1532: default:
1533: break;
1534: }
1535:
1536: if (imsg->hdr.type != MSG_IDENTIFY_DONE)
1537: return;
1538: c->flags |= CLIENT_IDENTIFIED;
1539:
1540: if (*c->ttyname != '\0')
1541: name = xstrdup(c->ttyname);
1542: else
1543: xasprintf(&name, "client-%ld", (long)c->pid);
1544: c->name = name;
1545: log_debug("client %p name is %s", c, c->name);
1546:
1547: #ifdef __CYGWIN__
1548: c->fd = open(c->ttyname, O_RDWR|O_NOCTTY);
1549: #endif
1550:
1551: if (c->flags & CLIENT_CONTROL) {
1552: c->stdin_callback = control_callback;
1553:
1554: evbuffer_free(c->stderr_data);
1555: c->stderr_data = c->stdout_data;
1556:
1557: if (c->flags & CLIENT_CONTROLCONTROL)
1558: evbuffer_add_printf(c->stdout_data, "\033P1000p");
1559: proc_send(c->peer, MSG_STDIN, -1, NULL, 0);
1560:
1561: c->tty.fd = -1;
1562:
1563: close(c->fd);
1564: c->fd = -1;
1565:
1566: return;
1567: }
1568:
1569: if (c->fd == -1)
1570: return;
1571: if (tty_init(&c->tty, c, c->fd, c->term) != 0) {
1572: close(c->fd);
1573: c->fd = -1;
1574: return;
1575: }
1576: if (c->flags & CLIENT_UTF8)
1577: c->tty.flags |= TTY_UTF8;
1578: if (c->flags & CLIENT_256COLOURS)
1579: c->tty.term_flags |= TERM_256COLOURS;
1580:
1581: tty_resize(&c->tty);
1582:
1583: if (!(c->flags & CLIENT_CONTROL))
1584: c->flags |= CLIENT_TERMINAL;
1585: }
1586:
1587: /* Handle shell message. */
1588: static void
1589: server_client_dispatch_shell(struct client *c)
1590: {
1591: const char *shell;
1592:
1593: shell = options_get_string(global_s_options, "default-shell");
1594: if (*shell == '\0' || areshell(shell))
1595: shell = _PATH_BSHELL;
1596: proc_send_s(c->peer, MSG_SHELL, shell);
1597:
1598: proc_kill_peer(c->peer);
1599: }
1600:
1601: /* Event callback to push more stdout data if any left. */
1602: static void
1603: server_client_stdout_cb(__unused int fd, __unused short events, void *arg)
1604: {
1605: struct client *c = arg;
1606:
1607: if (~c->flags & CLIENT_DEAD)
1608: server_client_push_stdout(c);
1609: server_client_unref(c);
1610: }
1611:
1612: /* Push stdout to client if possible. */
1613: void
1614: server_client_push_stdout(struct client *c)
1615: {
1616: struct msg_stdout_data data;
1617: size_t sent, left;
1618:
1619: left = EVBUFFER_LENGTH(c->stdout_data);
1620: while (left != 0) {
1621: sent = left;
1622: if (sent > sizeof data.data)
1623: sent = sizeof data.data;
1624: memcpy(data.data, EVBUFFER_DATA(c->stdout_data), sent);
1625: data.size = sent;
1626:
1627: if (proc_send(c->peer, MSG_STDOUT, -1, &data, sizeof data) != 0)
1628: break;
1629: evbuffer_drain(c->stdout_data, sent);
1630:
1631: left = EVBUFFER_LENGTH(c->stdout_data);
1632: log_debug("%s: client %p, sent %zu, left %zu", __func__, c,
1633: sent, left);
1634: }
1635: if (left != 0) {
1636: c->references++;
1637: event_once(-1, EV_TIMEOUT, server_client_stdout_cb, c, NULL);
1638: log_debug("%s: client %p, queued", __func__, c);
1639: }
1640: }
1641:
1642: /* Event callback to push more stderr data if any left. */
1643: static void
1644: server_client_stderr_cb(__unused int fd, __unused short events, void *arg)
1645: {
1646: struct client *c = arg;
1647:
1648: if (~c->flags & CLIENT_DEAD)
1649: server_client_push_stderr(c);
1650: server_client_unref(c);
1651: }
1652:
1653: /* Push stderr to client if possible. */
1654: void
1655: server_client_push_stderr(struct client *c)
1656: {
1657: struct msg_stderr_data data;
1658: size_t sent, left;
1659:
1660: if (c->stderr_data == c->stdout_data) {
1661: server_client_push_stdout(c);
1662: return;
1663: }
1664:
1665: left = EVBUFFER_LENGTH(c->stderr_data);
1666: while (left != 0) {
1667: sent = left;
1668: if (sent > sizeof data.data)
1669: sent = sizeof data.data;
1670: memcpy(data.data, EVBUFFER_DATA(c->stderr_data), sent);
1671: data.size = sent;
1672:
1673: if (proc_send(c->peer, MSG_STDERR, -1, &data, sizeof data) != 0)
1674: break;
1675: evbuffer_drain(c->stderr_data, sent);
1676:
1677: left = EVBUFFER_LENGTH(c->stderr_data);
1678: log_debug("%s: client %p, sent %zu, left %zu", __func__, c,
1679: sent, left);
1680: }
1681: if (left != 0) {
1682: c->references++;
1683: event_once(-1, EV_TIMEOUT, server_client_stderr_cb, c, NULL);
1684: log_debug("%s: client %p, queued", __func__, c);
1685: }
1686: }
1687:
1688: /* Add to client message log. */
1689: void
1690: server_client_add_message(struct client *c, const char *fmt, ...)
1691: {
1692: struct message_entry *msg, *msg1;
1693: char *s;
1694: va_list ap;
1695: u_int limit;
1696:
1697: va_start(ap, fmt);
1698: xvasprintf(&s, fmt, ap);
1699: va_end(ap);
1700:
1701: log_debug("message %s (client %p)", s, c);
1702:
1703: msg = xcalloc(1, sizeof *msg);
1704: msg->msg_time = time(NULL);
1705: msg->msg_num = c->message_next++;
1706: msg->msg = s;
1707: TAILQ_INSERT_TAIL(&c->message_log, msg, entry);
1708:
1709: limit = options_get_number(global_options, "message-limit");
1710: TAILQ_FOREACH_SAFE(msg, &c->message_log, entry, msg1) {
1711: if (msg->msg_num + limit >= c->message_next)
1712: break;
1713: free(msg->msg);
1714: TAILQ_REMOVE(&c->message_log, msg, entry);
1715: free(msg);
1716: }
1717: }
1718:
1719: /* Get client working directory. */
1720: const char *
1721: server_client_get_cwd(struct client *c)
1722: {
1723: struct session *s;
1724:
1725: if (c != NULL && c->session == NULL && c->cwd != NULL)
1726: return (c->cwd);
1727: if (c != NULL && (s = c->session) != NULL && s->cwd != NULL)
1728: return (s->cwd);
1729: return (".");
1730: }
1731:
1732: /* Resolve an absolute path or relative to client working directory. */
1733: char *
1734: server_client_get_path(struct client *c, const char *file)
1735: {
1736: char *path, resolved[PATH_MAX];
1737:
1738: if (*file == '/')
1739: path = xstrdup(file);
1740: else
1741: xasprintf(&path, "%s/%s", server_client_get_cwd(c), file);
1742: if (realpath(path, resolved) == NULL)
1743: return (path);
1744: free(path);
1745: return (xstrdup(resolved));
1746: }
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