Annotation of src/usr.bin/tmux/tmux.c, Revision 1.86
1.86 ! deraadt 1: /* $OpenBSD: tmux.c,v 1.85 2010/07/24 19:25:31 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2007 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: #include <sys/stat.h>
1.78 nicm 21: #include <sys/wait.h>
1.1 nicm 22:
23: #include <errno.h>
1.55 nicm 24: #include <event.h>
1.1 nicm 25: #include <paths.h>
26: #include <pwd.h>
27: #include <signal.h>
28: #include <stdlib.h>
29: #include <string.h>
30: #include <syslog.h>
31: #include <unistd.h>
32:
33: #include "tmux.h"
34:
35: #ifdef DEBUG
1.54 nicm 36: extern char *malloc_options;
1.1 nicm 37: #endif
38:
39: char *cfg_file;
1.63 nicm 40: struct options global_options; /* server options */
1.12 nicm 41: struct options global_s_options; /* session options */
42: struct options global_w_options; /* window options */
1.29 nicm 43: struct environ global_environ;
1.1 nicm 44:
1.78 nicm 45: struct event_base *ev_base;
46:
1.1 nicm 47: int debug_level;
48: time_t start_time;
49: char *socket_path;
1.41 nicm 50: int login_shell;
1.1 nicm 51:
1.70 nicm 52: struct env_data {
53: char *path;
54: pid_t pid;
55: u_int idx;
56: };
57:
1.1 nicm 58: __dead void usage(void);
1.70 nicm 59: void parse_env(struct env_data *);
1.1 nicm 60: char *makesockpath(const char *);
1.46 nicm 61: __dead void shell_exec(const char *, const char *);
1.1 nicm 62:
1.55 nicm 63: struct imsgbuf *main_ibuf;
64:
65: void main_signal(int, short, unused void *);
66: void main_callback(int, short, void *);
67: void main_dispatch(const char *);
68:
1.1 nicm 69: __dead void
70: usage(void)
71: {
1.4 sobrado 72: fprintf(stderr,
1.52 nicm 73: "usage: %s [-28lquv] [-c shell-command] [-f file] [-L socket-name]\n"
1.41 nicm 74: " [-S socket-path] [command [flags]]\n",
1.1 nicm 75: __progname);
76: exit(1);
77: }
78:
79: void
80: logfile(const char *name)
81: {
82: char *path;
83:
84: log_close();
85: if (debug_level > 0) {
1.32 nicm 86: xasprintf(&path, "tmux-%s-%ld.log", name, (long) getpid());
1.1 nicm 87: log_open_file(debug_level, path);
88: xfree(path);
89: }
90: }
91:
1.39 nicm 92: const char *
93: getshell(void)
94: {
95: struct passwd *pw;
96: const char *shell;
97:
98: shell = getenv("SHELL");
99: if (checkshell(shell))
100: return (shell);
101:
102: pw = getpwuid(getuid());
103: if (pw != NULL && checkshell(pw->pw_shell))
104: return (pw->pw_shell);
105:
106: return (_PATH_BSHELL);
107: }
108:
109: int
110: checkshell(const char *shell)
111: {
112: if (shell == NULL || *shell == '\0' || areshell(shell))
113: return (0);
114: if (access(shell, X_OK) != 0)
115: return (0);
116: return (1);
117: }
118:
119: int
120: areshell(const char *shell)
121: {
122: const char *progname, *ptr;
123:
124: if ((ptr = strrchr(shell, '/')) != NULL)
125: ptr++;
126: else
127: ptr = shell;
128: progname = __progname;
129: if (*progname == '-')
130: progname++;
131: if (strcmp(ptr, progname) == 0)
132: return (1);
133: return (0);
134: }
135:
1.50 nicm 136: void
1.70 nicm 137: parse_env(struct env_data *data)
1.50 nicm 138: {
1.70 nicm 139: char *env, *path_pid, *pid_idx, buf[256];
1.50 nicm 140: size_t len;
141: const char *errstr;
142: long long ll;
143:
144: data->pid = -1;
145: if ((env = getenv("TMUX")) == NULL)
146: return;
147:
1.70 nicm 148: if ((path_pid = strchr(env, ',')) == NULL || path_pid == env)
1.50 nicm 149: return;
1.70 nicm 150: if ((pid_idx = strchr(path_pid + 1, ',')) == NULL)
1.50 nicm 151: return;
1.70 nicm 152: if ((pid_idx == path_pid + 1 || pid_idx[1] == '\0'))
153: return;
154:
155: /* path */
156: len = path_pid - env;
157: data->path = xmalloc (len + 1);
158: memcpy(data->path, env, len);
159: data->path[len] = '\0';
1.50 nicm 160:
1.70 nicm 161: /* pid */
162: len = pid_idx - path_pid - 1;
1.50 nicm 163: if (len > (sizeof buf) - 1)
164: return;
1.70 nicm 165: memcpy(buf, path_pid + 1, len);
1.50 nicm 166: buf[len] = '\0';
167:
168: ll = strtonum(buf, 0, LONG_MAX, &errstr);
169: if (errstr != NULL)
170: return;
171: data->pid = ll;
172:
1.70 nicm 173: /* idx */
174: ll = strtonum(pid_idx+1, 0, UINT_MAX, &errstr);
1.50 nicm 175: if (errstr != NULL)
176: return;
177: data->idx = ll;
178: }
179:
1.1 nicm 180: char *
181: makesockpath(const char *label)
182: {
183: char base[MAXPATHLEN], *path;
184: struct stat sb;
185: u_int uid;
186:
187: uid = getuid();
1.32 nicm 188: xsnprintf(base, MAXPATHLEN, "%s/tmux-%d", _PATH_TMP, uid);
1.1 nicm 189:
190: if (mkdir(base, S_IRWXU) != 0 && errno != EEXIST)
191: return (NULL);
192:
193: if (lstat(base, &sb) != 0)
194: return (NULL);
195: if (!S_ISDIR(sb.st_mode)) {
196: errno = ENOTDIR;
197: return (NULL);
198: }
199: if (sb.st_uid != uid || (sb.st_mode & (S_IRWXG|S_IRWXO)) != 0) {
200: errno = EACCES;
201: return (NULL);
202: }
203:
204: xasprintf(&path, "%s/%s", base, label);
205: return (path);
206: }
207:
1.55 nicm 208: __dead void
209: shell_exec(const char *shell, const char *shellcmd)
210: {
211: const char *shellname, *ptr;
212: char *argv0;
213:
214: ptr = strrchr(shell, '/');
215: if (ptr != NULL && *(ptr + 1) != '\0')
216: shellname = ptr + 1;
217: else
218: shellname = shell;
219: if (login_shell)
220: xasprintf(&argv0, "-%s", shellname);
221: else
222: xasprintf(&argv0, "%s", shellname);
223: setenv("SHELL", shell, 1);
224:
225: execl(shell, argv0, "-c", shellcmd, (char *) NULL);
226: fatal("execl failed");
227: }
228:
1.1 nicm 229: int
230: main(int argc, char **argv)
231: {
1.51 nicm 232: struct cmd_list *cmdlist;
1.62 nicm 233: struct cmd *cmd;
1.51 nicm 234: enum msgtype msg;
235: struct passwd *pw;
1.63 nicm 236: struct options *oo, *so, *wo;
1.51 nicm 237: struct keylist *keylist;
1.70 nicm 238: struct env_data envdata;
1.51 nicm 239: struct msg_command_data cmddata;
240: char *s, *shellcmd, *path, *label, *home, *cause;
1.82 nicm 241: char **var;
1.51 nicm 242: void *buf;
243: size_t len;
1.64 nicm 244: int opt, flags, quiet = 0, cmdflags = 0;
1.55 nicm 245: short events;
1.54 nicm 246:
247: #ifdef DEBUG
248: malloc_options = (char *) "AFGJPX";
249: #endif
1.1 nicm 250:
1.45 nicm 251: flags = 0;
1.46 nicm 252: shellcmd = label = path = NULL;
1.70 nicm 253: envdata.path = NULL;
1.41 nicm 254: login_shell = (**argv == '-');
1.46 nicm 255: while ((opt = getopt(argc, argv, "28c:df:lL:qS:uUv")) != -1) {
1.41 nicm 256: switch (opt) {
1.1 nicm 257: case '2':
258: flags |= IDENTIFY_256COLOURS;
259: flags &= ~IDENTIFY_88COLOURS;
260: break;
261: case '8':
262: flags |= IDENTIFY_88COLOURS;
263: flags &= ~IDENTIFY_256COLOURS;
264: break;
1.46 nicm 265: case 'c':
266: if (shellcmd != NULL)
267: xfree(shellcmd);
268: shellcmd = xstrdup(optarg);
1.37 nicm 269: break;
1.1 nicm 270: case 'f':
1.42 nicm 271: if (cfg_file != NULL)
1.2 ray 272: xfree(cfg_file);
1.1 nicm 273: cfg_file = xstrdup(optarg);
1.41 nicm 274: break;
275: case 'l':
276: login_shell = 1;
1.1 nicm 277: break;
278: case 'L':
279: if (label != NULL)
280: xfree(label);
281: label = xstrdup(optarg);
282: break;
1.37 nicm 283: case 'q':
1.63 nicm 284: quiet = 1;
1.37 nicm 285: break;
1.1 nicm 286: case 'S':
287: if (path != NULL)
288: xfree(path);
289: path = xstrdup(optarg);
290: break;
291: case 'u':
292: flags |= IDENTIFY_UTF8;
293: break;
294: case 'v':
295: debug_level++;
296: break;
1.53 deraadt 297: default:
1.1 nicm 298: usage();
1.53 deraadt 299: }
300: }
1.1 nicm 301: argc -= optind;
302: argv += optind;
303:
1.46 nicm 304: if (shellcmd != NULL && argc != 0)
305: usage();
306:
1.1 nicm 307: log_open_tty(debug_level);
308:
1.15 nicm 309: if (!(flags & IDENTIFY_UTF8)) {
310: /*
311: * If the user has set whichever of LC_ALL, LC_CTYPE or LANG
312: * exist (in that order) to contain UTF-8, it is a safe
313: * assumption that either they are using a UTF-8 terminal, or
314: * if not they know that output from UTF-8-capable programs may
315: * be wrong.
316: */
317: if ((s = getenv("LC_ALL")) == NULL) {
318: if ((s = getenv("LC_CTYPE")) == NULL)
319: s = getenv("LANG");
320: }
1.26 nicm 321: if (s != NULL && (strcasestr(s, "UTF-8") != NULL ||
322: strcasestr(s, "UTF8") != NULL))
1.15 nicm 323: flags |= IDENTIFY_UTF8;
324: }
325:
1.42 nicm 326: environ_init(&global_environ);
1.62 nicm 327: for (var = environ; *var != NULL; var++)
1.42 nicm 328: environ_put(&global_environ, *var);
1.63 nicm 329:
330: options_init(&global_options, NULL);
331: oo = &global_options;
1.64 nicm 332: options_set_number(oo, "quiet", quiet);
1.65 nicm 333: options_set_number(oo, "escape-time", 500);
1.42 nicm 334:
1.12 nicm 335: options_init(&global_s_options, NULL);
1.42 nicm 336: so = &global_s_options;
337: options_set_number(so, "base-index", 0);
338: options_set_number(so, "bell-action", BELL_ANY);
339: options_set_number(so, "buffer-limit", 9);
340: options_set_string(so, "default-command", "%s", "");
1.82 nicm 341: options_set_string(so, "default-path", "%s", "");
1.42 nicm 342: options_set_string(so, "default-shell", "%s", getshell());
343: options_set_string(so, "default-terminal", "screen");
1.81 nicm 344: options_set_number(so, "detach-on-destroy", 1);
345: options_set_number(so, "display-panes-active-colour", 1);
1.42 nicm 346: options_set_number(so, "display-panes-colour", 4);
347: options_set_number(so, "display-panes-time", 1000);
348: options_set_number(so, "display-time", 750);
349: options_set_number(so, "history-limit", 2000);
350: options_set_number(so, "lock-after-time", 0);
1.45 nicm 351: options_set_string(so, "lock-command", "lock -np");
1.48 nicm 352: options_set_number(so, "lock-server", 1);
1.42 nicm 353: options_set_number(so, "message-attr", 0);
354: options_set_number(so, "message-bg", 3);
355: options_set_number(so, "message-fg", 0);
1.58 nicm 356: options_set_number(so, "message-limit", 20);
1.49 nicm 357: options_set_number(so, "mouse-select-pane", 0);
1.75 nicm 358: options_set_number(so, "pane-active-border-bg", 8);
359: options_set_number(so, "pane-active-border-fg", 2);
1.66 nicm 360: options_set_number(so, "pane-border-bg", 8);
361: options_set_number(so, "pane-border-fg", 8);
1.42 nicm 362: options_set_number(so, "repeat-time", 500);
363: options_set_number(so, "set-remain-on-exit", 0);
364: options_set_number(so, "set-titles", 0);
1.43 nicm 365: options_set_string(so, "set-titles-string", "#S:#I:#W - \"#T\"");
1.42 nicm 366: options_set_number(so, "status", 1);
367: options_set_number(so, "status-attr", 0);
368: options_set_number(so, "status-bg", 2);
369: options_set_number(so, "status-fg", 0);
370: options_set_number(so, "status-interval", 15);
371: options_set_number(so, "status-justify", 0);
372: options_set_number(so, "status-keys", MODEKEY_EMACS);
373: options_set_string(so, "status-left", "[#S]");
374: options_set_number(so, "status-left-attr", 0);
375: options_set_number(so, "status-left-bg", 8);
376: options_set_number(so, "status-left-fg", 8);
377: options_set_number(so, "status-left-length", 10);
378: options_set_string(so, "status-right", "\"#22T\" %%H:%%M %%d-%%b-%%y");
379: options_set_number(so, "status-right-attr", 0);
380: options_set_number(so, "status-right-bg", 8);
381: options_set_number(so, "status-right-fg", 8);
382: options_set_number(so, "status-right-length", 40);
383: options_set_string(so, "terminal-overrides",
384: "*88col*:colors=88,*256col*:colors=256");
385: options_set_string(so, "update-environment", "DISPLAY "
1.35 nicm 386: "WINDOWID SSH_ASKPASS SSH_AUTH_SOCK SSH_AGENT_PID SSH_CONNECTION");
1.42 nicm 387: options_set_number(so, "visual-activity", 0);
388: options_set_number(so, "visual-bell", 0);
389: options_set_number(so, "visual-content", 0);
1.44 nicm 390:
391: keylist = xmalloc(sizeof *keylist);
392: ARRAY_INIT(keylist);
393: ARRAY_ADD(keylist, '\002');
394: options_set_data(so, "prefix", keylist, xfree);
1.1 nicm 395:
1.12 nicm 396: options_init(&global_w_options, NULL);
1.42 nicm 397: wo = &global_w_options;
398: options_set_number(wo, "aggressive-resize", 0);
1.72 nicm 399: options_set_number(wo, "alternate-screen", 1);
1.42 nicm 400: options_set_number(wo, "automatic-rename", 1);
401: options_set_number(wo, "clock-mode-colour", 4);
402: options_set_number(wo, "clock-mode-style", 1);
403: options_set_number(wo, "force-height", 0);
404: options_set_number(wo, "force-width", 0);
405: options_set_number(wo, "main-pane-height", 24);
406: options_set_number(wo, "main-pane-width", 81);
407: options_set_number(wo, "mode-attr", 0);
408: options_set_number(wo, "mode-bg", 3);
409: options_set_number(wo, "mode-fg", 0);
410: options_set_number(wo, "mode-keys", MODEKEY_EMACS);
411: options_set_number(wo, "mode-mouse", 0);
412: options_set_number(wo, "monitor-activity", 0);
413: options_set_string(wo, "monitor-content", "%s", "");
414: options_set_number(wo, "window-status-attr", 0);
415: options_set_number(wo, "window-status-bg", 8);
416: options_set_number(wo, "window-status-current-attr", 0);
417: options_set_number(wo, "window-status-current-bg", 8);
418: options_set_number(wo, "window-status-current-fg", 8);
419: options_set_number(wo, "window-status-fg", 8);
1.79 nicm 420: options_set_number(wo, "window-status-alert-attr", GRID_ATTR_REVERSE);
421: options_set_number(wo, "window-status-alert-bg", 8);
422: options_set_number(wo, "window-status-alert-fg", 8);
1.60 nicm 423: options_set_string(wo, "window-status-format", "#I:#W#F");
424: options_set_string(wo, "window-status-current-format", "#I:#W#F");
1.73 nicm 425: options_set_string(wo, "word-separators", " -_@");
1.59 nicm 426: options_set_number(wo, "xterm-keys", 0);
1.62 nicm 427: options_set_number(wo, "remain-on-exit", 0);
1.47 nicm 428: options_set_number(wo, "synchronize-panes", 0);
1.42 nicm 429:
1.62 nicm 430: if (flags & IDENTIFY_UTF8) {
1.42 nicm 431: options_set_number(so, "status-utf8", 1);
432: options_set_number(wo, "utf8", 1);
433: } else {
434: options_set_number(so, "status-utf8", 0);
435: options_set_number(wo, "utf8", 0);
436: }
1.1 nicm 437:
438: if (cfg_file == NULL) {
439: home = getenv("HOME");
440: if (home == NULL || *home == '\0') {
441: pw = getpwuid(getuid());
442: if (pw != NULL)
443: home = pw->pw_dir;
444: }
445: xasprintf(&cfg_file, "%s/%s", home, DEFAULT_CFG);
1.69 nicm 446: if (access(cfg_file, R_OK) != 0 && errno == ENOENT) {
1.1 nicm 447: xfree(cfg_file);
448: cfg_file = NULL;
449: }
450: }
1.62 nicm 451:
1.68 nicm 452: /*
453: * Figure out the socket path. If specified on the command-line with
454: * -S or -L, use it, otherwise try $TMUX or assume -L default.
455: */
1.70 nicm 456: parse_env(&envdata);
1.68 nicm 457: if (path == NULL) {
458: /* No -L. Try $TMUX, or default. */
459: if (label == NULL) {
1.70 nicm 460: path = envdata.path;
461: if (path == NULL)
1.68 nicm 462: label = xstrdup("default");
463: }
464:
465: /* -L or default set. */
466: if (label != NULL) {
467: if ((path = makesockpath(label)) == NULL) {
468: log_warn("can't create socket");
469: exit(1);
470: }
471: }
1.1 nicm 472: }
1.68 nicm 473: if (label != NULL)
474: xfree(label);
1.1 nicm 475:
1.46 nicm 476: if (shellcmd != NULL) {
477: msg = MSG_SHELL;
478: buf = NULL;
479: len = 0;
1.51 nicm 480: } else {
1.70 nicm 481: cmddata.pid = envdata.pid;
482: cmddata.idx = envdata.idx;
1.62 nicm 483:
1.71 nicm 484: /* Prepare command for server. */
1.51 nicm 485: cmddata.argc = argc;
486: if (cmd_pack_argv(
487: argc, argv, cmddata.argv, sizeof cmddata.argv) != 0) {
488: log_warnx("command too long");
489: exit(1);
490: }
1.62 nicm 491:
1.51 nicm 492: msg = MSG_COMMAND;
493: buf = &cmddata;
494: len = sizeof cmddata;
495: }
1.21 nicm 496:
1.46 nicm 497: if (shellcmd != NULL)
498: cmdflags |= CMD_STARTSERVER;
499: else if (argc == 0) /* new-session is the default */
1.71 nicm 500: cmdflags |= CMD_STARTSERVER|CMD_SENDENVIRON|CMD_CANTNEST;
1.21 nicm 501: else {
502: /*
503: * It sucks parsing the command string twice (in client and
504: * later in server) but it is necessary to get the start server
505: * flag.
506: */
507: if ((cmdlist = cmd_list_parse(argc, argv, &cause)) == NULL) {
508: log_warnx("%s", cause);
509: exit(1);
1.1 nicm 510: }
1.21 nicm 511: cmdflags &= ~CMD_STARTSERVER;
1.80 nicm 512: TAILQ_FOREACH(cmd, &cmdlist->list, qentry) {
1.29 nicm 513: if (cmd->entry->flags & CMD_STARTSERVER)
1.20 nicm 514: cmdflags |= CMD_STARTSERVER;
1.29 nicm 515: if (cmd->entry->flags & CMD_SENDENVIRON)
516: cmdflags |= CMD_SENDENVIRON;
1.71 nicm 517: if (cmd->entry->flags & CMD_CANTNEST)
518: cmdflags |= CMD_CANTNEST;
1.1 nicm 519: }
1.21 nicm 520: cmd_list_free(cmdlist);
1.71 nicm 521: }
522:
523: /*
524: * Check if this could be a nested session, if the command can't nest:
525: * if the socket path matches $TMUX, this is probably the same server.
526: */
527: if (shellcmd == NULL && envdata.path != NULL &&
528: cmdflags & CMD_CANTNEST &&
529: (path == envdata.path || strcmp(path, envdata.path) == 0)) {
530: log_warnx("sessions should be nested with care. "
531: "unset $TMUX to force.");
532: exit(1);
1.1 nicm 533: }
534:
1.78 nicm 535: ev_base = event_init();
536: set_signals(main_signal);
1.77 nicm 537:
1.76 nicm 538: /* Initialise the client socket/start the server. */
539: if ((main_ibuf = client_init(path, cmdflags, flags)) == NULL)
540: exit(1);
541: xfree(path);
542:
1.77 nicm 543: imsg_compose(main_ibuf, msg, PROTOCOL_VERSION, -1, -1, buf, len);
1.74 nicm 544:
1.55 nicm 545: events = EV_READ;
546: if (main_ibuf->w.queued > 0)
547: events |= EV_WRITE;
548: event_once(main_ibuf->fd, events, main_callback, shellcmd, NULL);
549:
550: event_dispatch();
1.1 nicm 551:
1.78 nicm 552: clear_signals();
1.55 nicm 553:
554: client_main(); /* doesn't return */
555: }
1.31 nicm 556:
1.61 nicm 557: /* ARGSUSED */
1.55 nicm 558: void
559: main_signal(int sig, unused short events, unused void *data)
560: {
1.78 nicm 561: int status;
562:
1.55 nicm 563: switch (sig) {
564: case SIGTERM:
565: exit(1);
1.78 nicm 566: case SIGCHLD:
567: waitpid(WAIT_ANY, &status, WNOHANG);
568: break;
1.31 nicm 569: }
1.55 nicm 570: }
1.31 nicm 571:
1.61 nicm 572: /* ARGSUSED */
1.55 nicm 573: void
574: main_callback(unused int fd, short events, void *data)
575: {
576: char *shellcmd = data;
577:
578: if (events & EV_READ)
579: main_dispatch(shellcmd);
1.62 nicm 580:
1.55 nicm 581: if (events & EV_WRITE) {
582: if (msgbuf_write(&main_ibuf->w) < 0)
583: fatalx("msgbuf_write failed");
584: }
1.31 nicm 585:
1.55 nicm 586: events = EV_READ;
587: if (main_ibuf->w.queued > 0)
588: events |= EV_WRITE;
589: event_once(main_ibuf->fd, events, main_callback, shellcmd, NULL);
1.31 nicm 590: }
591:
1.55 nicm 592: void
593: main_dispatch(const char *shellcmd)
1.31 nicm 594: {
595: struct imsg imsg;
596: ssize_t n, datalen;
1.46 nicm 597: struct msg_shell_data shelldata;
1.84 nicm 598: struct msg_exit_data exitdata;
1.1 nicm 599:
1.55 nicm 600: if ((n = imsg_read(main_ibuf)) == -1 || n == 0)
1.31 nicm 601: fatalx("imsg_read failed");
1.1 nicm 602:
1.31 nicm 603: for (;;) {
1.55 nicm 604: if ((n = imsg_get(main_ibuf, &imsg)) == -1)
1.31 nicm 605: fatalx("imsg_get failed");
606: if (n == 0)
1.55 nicm 607: return;
1.31 nicm 608: datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
1.1 nicm 609:
1.31 nicm 610: switch (imsg.hdr.type) {
1.1 nicm 611: case MSG_EXIT:
612: case MSG_SHUTDOWN:
1.84 nicm 613: if (datalen != sizeof exitdata) {
614: if (datalen != 0)
615: fatalx("bad MSG_EXIT size");
616: exit(0);
617: }
618: memcpy(&exitdata, imsg.data, sizeof exitdata);
619: exit(exitdata.retcode);
1.1 nicm 620: case MSG_READY:
1.31 nicm 621: if (datalen != 0)
622: fatalx("bad MSG_READY size");
623:
1.55 nicm 624: event_loopexit(NULL); /* move to client_main() */
625: break;
1.31 nicm 626: case MSG_VERSION:
627: if (datalen != 0)
628: fatalx("bad MSG_VERSION size");
629:
630: log_warnx("protocol version mismatch (client %u, "
631: "server %u)", PROTOCOL_VERSION, imsg.hdr.peerid);
1.55 nicm 632: exit(1);
1.46 nicm 633: case MSG_SHELL:
634: if (datalen != sizeof shelldata)
635: fatalx("bad MSG_SHELL size");
636: memcpy(&shelldata, imsg.data, sizeof shelldata);
637: shelldata.shell[(sizeof shelldata.shell) - 1] = '\0';
1.55 nicm 638:
1.78 nicm 639: clear_signals();
1.55 nicm 640:
1.46 nicm 641: shell_exec(shelldata.shell, shellcmd);
1.1 nicm 642: default:
1.31 nicm 643: fatalx("unexpected message");
1.1 nicm 644: }
1.31 nicm 645:
646: imsg_free(&imsg);
1.1 nicm 647: }
648: }
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