Annotation of src/usr.bin/tmux/tmux.c, Revision 1.82
1.82 ! nicm 1: /* $OpenBSD: tmux.c,v 1.81 2010/06/27 00:22:22 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: int main_exitval;
65:
66: void main_signal(int, short, unused void *);
67: void main_callback(int, short, void *);
68: void main_dispatch(const char *);
69:
1.1 nicm 70: __dead void
71: usage(void)
72: {
1.4 sobrado 73: fprintf(stderr,
1.52 nicm 74: "usage: %s [-28lquv] [-c shell-command] [-f file] [-L socket-name]\n"
1.41 nicm 75: " [-S socket-path] [command [flags]]\n",
1.1 nicm 76: __progname);
77: exit(1);
78: }
79:
80: void
81: logfile(const char *name)
82: {
83: char *path;
84:
85: log_close();
86: if (debug_level > 0) {
1.32 nicm 87: xasprintf(&path, "tmux-%s-%ld.log", name, (long) getpid());
1.1 nicm 88: log_open_file(debug_level, path);
89: xfree(path);
90: }
91: }
92:
1.39 nicm 93: const char *
94: getshell(void)
95: {
96: struct passwd *pw;
97: const char *shell;
98:
99: shell = getenv("SHELL");
100: if (checkshell(shell))
101: return (shell);
102:
103: pw = getpwuid(getuid());
104: if (pw != NULL && checkshell(pw->pw_shell))
105: return (pw->pw_shell);
106:
107: return (_PATH_BSHELL);
108: }
109:
110: int
111: checkshell(const char *shell)
112: {
113: if (shell == NULL || *shell == '\0' || areshell(shell))
114: return (0);
115: if (access(shell, X_OK) != 0)
116: return (0);
117: return (1);
118: }
119:
120: int
121: areshell(const char *shell)
122: {
123: const char *progname, *ptr;
124:
125: if ((ptr = strrchr(shell, '/')) != NULL)
126: ptr++;
127: else
128: ptr = shell;
129: progname = __progname;
130: if (*progname == '-')
131: progname++;
132: if (strcmp(ptr, progname) == 0)
133: return (1);
134: return (0);
135: }
136:
1.50 nicm 137: void
1.70 nicm 138: parse_env(struct env_data *data)
1.50 nicm 139: {
1.70 nicm 140: char *env, *path_pid, *pid_idx, buf[256];
1.50 nicm 141: size_t len;
142: const char *errstr;
143: long long ll;
144:
145: data->pid = -1;
146: if ((env = getenv("TMUX")) == NULL)
147: return;
148:
1.70 nicm 149: if ((path_pid = strchr(env, ',')) == NULL || path_pid == env)
1.50 nicm 150: return;
1.70 nicm 151: if ((pid_idx = strchr(path_pid + 1, ',')) == NULL)
1.50 nicm 152: return;
1.70 nicm 153: if ((pid_idx == path_pid + 1 || pid_idx[1] == '\0'))
154: return;
155:
156: /* path */
157: len = path_pid - env;
158: data->path = xmalloc (len + 1);
159: memcpy(data->path, env, len);
160: data->path[len] = '\0';
1.50 nicm 161:
1.70 nicm 162: /* pid */
163: len = pid_idx - path_pid - 1;
1.50 nicm 164: if (len > (sizeof buf) - 1)
165: return;
1.70 nicm 166: memcpy(buf, path_pid + 1, len);
1.50 nicm 167: buf[len] = '\0';
168:
169: ll = strtonum(buf, 0, LONG_MAX, &errstr);
170: if (errstr != NULL)
171: return;
172: data->pid = ll;
173:
1.70 nicm 174: /* idx */
175: ll = strtonum(pid_idx+1, 0, UINT_MAX, &errstr);
1.50 nicm 176: if (errstr != NULL)
177: return;
178: data->idx = ll;
179: }
180:
1.1 nicm 181: char *
182: makesockpath(const char *label)
183: {
184: char base[MAXPATHLEN], *path;
185: struct stat sb;
186: u_int uid;
187:
188: uid = getuid();
1.32 nicm 189: xsnprintf(base, MAXPATHLEN, "%s/tmux-%d", _PATH_TMP, uid);
1.1 nicm 190:
191: if (mkdir(base, S_IRWXU) != 0 && errno != EEXIST)
192: return (NULL);
193:
194: if (lstat(base, &sb) != 0)
195: return (NULL);
196: if (!S_ISDIR(sb.st_mode)) {
197: errno = ENOTDIR;
198: return (NULL);
199: }
200: if (sb.st_uid != uid || (sb.st_mode & (S_IRWXG|S_IRWXO)) != 0) {
201: errno = EACCES;
202: return (NULL);
203: }
204:
205: xasprintf(&path, "%s/%s", base, label);
206: return (path);
207: }
208:
1.55 nicm 209: __dead void
210: shell_exec(const char *shell, const char *shellcmd)
211: {
212: const char *shellname, *ptr;
213: char *argv0;
214:
215: ptr = strrchr(shell, '/');
216: if (ptr != NULL && *(ptr + 1) != '\0')
217: shellname = ptr + 1;
218: else
219: shellname = shell;
220: if (login_shell)
221: xasprintf(&argv0, "-%s", shellname);
222: else
223: xasprintf(&argv0, "%s", shellname);
224: setenv("SHELL", shell, 1);
225:
226: execl(shell, argv0, "-c", shellcmd, (char *) NULL);
227: fatal("execl failed");
228: }
229:
1.1 nicm 230: int
231: main(int argc, char **argv)
232: {
1.51 nicm 233: struct cmd_list *cmdlist;
1.62 nicm 234: struct cmd *cmd;
1.51 nicm 235: enum msgtype msg;
236: struct passwd *pw;
1.63 nicm 237: struct options *oo, *so, *wo;
1.51 nicm 238: struct keylist *keylist;
1.70 nicm 239: struct env_data envdata;
1.51 nicm 240: struct msg_command_data cmddata;
241: char *s, *shellcmd, *path, *label, *home, *cause;
1.82 ! nicm 242: char **var;
1.51 nicm 243: void *buf;
244: size_t len;
1.64 nicm 245: int opt, flags, quiet = 0, cmdflags = 0;
1.55 nicm 246: short events;
1.54 nicm 247:
248: #ifdef DEBUG
249: malloc_options = (char *) "AFGJPX";
250: #endif
1.1 nicm 251:
1.45 nicm 252: flags = 0;
1.46 nicm 253: shellcmd = label = path = NULL;
1.70 nicm 254: envdata.path = NULL;
1.41 nicm 255: login_shell = (**argv == '-');
1.46 nicm 256: while ((opt = getopt(argc, argv, "28c:df:lL:qS:uUv")) != -1) {
1.41 nicm 257: switch (opt) {
1.1 nicm 258: case '2':
259: flags |= IDENTIFY_256COLOURS;
260: flags &= ~IDENTIFY_88COLOURS;
261: break;
262: case '8':
263: flags |= IDENTIFY_88COLOURS;
264: flags &= ~IDENTIFY_256COLOURS;
265: break;
1.46 nicm 266: case 'c':
267: if (shellcmd != NULL)
268: xfree(shellcmd);
269: shellcmd = xstrdup(optarg);
1.37 nicm 270: break;
1.1 nicm 271: case 'f':
1.42 nicm 272: if (cfg_file != NULL)
1.2 ray 273: xfree(cfg_file);
1.1 nicm 274: cfg_file = xstrdup(optarg);
1.41 nicm 275: break;
276: case 'l':
277: login_shell = 1;
1.1 nicm 278: break;
279: case 'L':
280: if (label != NULL)
281: xfree(label);
282: label = xstrdup(optarg);
283: break;
1.37 nicm 284: case 'q':
1.63 nicm 285: quiet = 1;
1.37 nicm 286: break;
1.1 nicm 287: case 'S':
288: if (path != NULL)
289: xfree(path);
290: path = xstrdup(optarg);
291: break;
292: case 'u':
293: flags |= IDENTIFY_UTF8;
294: break;
295: case 'v':
296: debug_level++;
297: break;
1.53 deraadt 298: default:
1.1 nicm 299: usage();
1.53 deraadt 300: }
301: }
1.1 nicm 302: argc -= optind;
303: argv += optind;
304:
1.46 nicm 305: if (shellcmd != NULL && argc != 0)
306: usage();
307:
1.1 nicm 308: log_open_tty(debug_level);
309:
1.15 nicm 310: if (!(flags & IDENTIFY_UTF8)) {
311: /*
312: * If the user has set whichever of LC_ALL, LC_CTYPE or LANG
313: * exist (in that order) to contain UTF-8, it is a safe
314: * assumption that either they are using a UTF-8 terminal, or
315: * if not they know that output from UTF-8-capable programs may
316: * be wrong.
317: */
318: if ((s = getenv("LC_ALL")) == NULL) {
319: if ((s = getenv("LC_CTYPE")) == NULL)
320: s = getenv("LANG");
321: }
1.26 nicm 322: if (s != NULL && (strcasestr(s, "UTF-8") != NULL ||
323: strcasestr(s, "UTF8") != NULL))
1.15 nicm 324: flags |= IDENTIFY_UTF8;
325: }
326:
1.42 nicm 327: environ_init(&global_environ);
1.62 nicm 328: for (var = environ; *var != NULL; var++)
1.42 nicm 329: environ_put(&global_environ, *var);
1.63 nicm 330:
331: options_init(&global_options, NULL);
332: oo = &global_options;
1.64 nicm 333: options_set_number(oo, "quiet", quiet);
1.65 nicm 334: options_set_number(oo, "escape-time", 500);
1.42 nicm 335:
1.12 nicm 336: options_init(&global_s_options, NULL);
1.42 nicm 337: so = &global_s_options;
338: options_set_number(so, "base-index", 0);
339: options_set_number(so, "bell-action", BELL_ANY);
340: options_set_number(so, "buffer-limit", 9);
341: options_set_string(so, "default-command", "%s", "");
1.82 ! nicm 342: options_set_string(so, "default-path", "%s", "");
1.42 nicm 343: options_set_string(so, "default-shell", "%s", getshell());
344: options_set_string(so, "default-terminal", "screen");
1.81 nicm 345: options_set_number(so, "detach-on-destroy", 1);
346: options_set_number(so, "display-panes-active-colour", 1);
1.42 nicm 347: options_set_number(so, "display-panes-colour", 4);
348: options_set_number(so, "display-panes-time", 1000);
349: options_set_number(so, "display-time", 750);
350: options_set_number(so, "history-limit", 2000);
351: options_set_number(so, "lock-after-time", 0);
1.45 nicm 352: options_set_string(so, "lock-command", "lock -np");
1.48 nicm 353: options_set_number(so, "lock-server", 1);
1.42 nicm 354: options_set_number(so, "message-attr", 0);
355: options_set_number(so, "message-bg", 3);
356: options_set_number(so, "message-fg", 0);
1.58 nicm 357: options_set_number(so, "message-limit", 20);
1.49 nicm 358: options_set_number(so, "mouse-select-pane", 0);
1.75 nicm 359: options_set_number(so, "pane-active-border-bg", 8);
360: options_set_number(so, "pane-active-border-fg", 2);
1.66 nicm 361: options_set_number(so, "pane-border-bg", 8);
362: options_set_number(so, "pane-border-fg", 8);
1.42 nicm 363: options_set_number(so, "repeat-time", 500);
364: options_set_number(so, "set-remain-on-exit", 0);
365: options_set_number(so, "set-titles", 0);
1.43 nicm 366: options_set_string(so, "set-titles-string", "#S:#I:#W - \"#T\"");
1.42 nicm 367: options_set_number(so, "status", 1);
368: options_set_number(so, "status-attr", 0);
369: options_set_number(so, "status-bg", 2);
370: options_set_number(so, "status-fg", 0);
371: options_set_number(so, "status-interval", 15);
372: options_set_number(so, "status-justify", 0);
373: options_set_number(so, "status-keys", MODEKEY_EMACS);
374: options_set_string(so, "status-left", "[#S]");
375: options_set_number(so, "status-left-attr", 0);
376: options_set_number(so, "status-left-bg", 8);
377: options_set_number(so, "status-left-fg", 8);
378: options_set_number(so, "status-left-length", 10);
379: options_set_string(so, "status-right", "\"#22T\" %%H:%%M %%d-%%b-%%y");
380: options_set_number(so, "status-right-attr", 0);
381: options_set_number(so, "status-right-bg", 8);
382: options_set_number(so, "status-right-fg", 8);
383: options_set_number(so, "status-right-length", 40);
384: options_set_string(so, "terminal-overrides",
385: "*88col*:colors=88,*256col*:colors=256");
386: options_set_string(so, "update-environment", "DISPLAY "
1.35 nicm 387: "WINDOWID SSH_ASKPASS SSH_AUTH_SOCK SSH_AGENT_PID SSH_CONNECTION");
1.42 nicm 388: options_set_number(so, "visual-activity", 0);
389: options_set_number(so, "visual-bell", 0);
390: options_set_number(so, "visual-content", 0);
1.44 nicm 391:
392: keylist = xmalloc(sizeof *keylist);
393: ARRAY_INIT(keylist);
394: ARRAY_ADD(keylist, '\002');
395: options_set_data(so, "prefix", keylist, xfree);
1.1 nicm 396:
1.12 nicm 397: options_init(&global_w_options, NULL);
1.42 nicm 398: wo = &global_w_options;
399: options_set_number(wo, "aggressive-resize", 0);
1.72 nicm 400: options_set_number(wo, "alternate-screen", 1);
1.42 nicm 401: options_set_number(wo, "automatic-rename", 1);
402: options_set_number(wo, "clock-mode-colour", 4);
403: options_set_number(wo, "clock-mode-style", 1);
404: options_set_number(wo, "force-height", 0);
405: options_set_number(wo, "force-width", 0);
406: options_set_number(wo, "main-pane-height", 24);
407: options_set_number(wo, "main-pane-width", 81);
408: options_set_number(wo, "mode-attr", 0);
409: options_set_number(wo, "mode-bg", 3);
410: options_set_number(wo, "mode-fg", 0);
411: options_set_number(wo, "mode-keys", MODEKEY_EMACS);
412: options_set_number(wo, "mode-mouse", 0);
413: options_set_number(wo, "monitor-activity", 0);
414: options_set_string(wo, "monitor-content", "%s", "");
415: options_set_number(wo, "window-status-attr", 0);
416: options_set_number(wo, "window-status-bg", 8);
417: options_set_number(wo, "window-status-current-attr", 0);
418: options_set_number(wo, "window-status-current-bg", 8);
419: options_set_number(wo, "window-status-current-fg", 8);
420: options_set_number(wo, "window-status-fg", 8);
1.79 nicm 421: options_set_number(wo, "window-status-alert-attr", GRID_ATTR_REVERSE);
422: options_set_number(wo, "window-status-alert-bg", 8);
423: options_set_number(wo, "window-status-alert-fg", 8);
1.60 nicm 424: options_set_string(wo, "window-status-format", "#I:#W#F");
425: options_set_string(wo, "window-status-current-format", "#I:#W#F");
1.73 nicm 426: options_set_string(wo, "word-separators", " -_@");
1.59 nicm 427: options_set_number(wo, "xterm-keys", 0);
1.62 nicm 428: options_set_number(wo, "remain-on-exit", 0);
1.47 nicm 429: options_set_number(wo, "synchronize-panes", 0);
1.42 nicm 430:
1.62 nicm 431: if (flags & IDENTIFY_UTF8) {
1.42 nicm 432: options_set_number(so, "status-utf8", 1);
433: options_set_number(wo, "utf8", 1);
434: } else {
435: options_set_number(so, "status-utf8", 0);
436: options_set_number(wo, "utf8", 0);
437: }
1.1 nicm 438:
439: if (cfg_file == NULL) {
440: home = getenv("HOME");
441: if (home == NULL || *home == '\0') {
442: pw = getpwuid(getuid());
443: if (pw != NULL)
444: home = pw->pw_dir;
445: }
446: xasprintf(&cfg_file, "%s/%s", home, DEFAULT_CFG);
1.69 nicm 447: if (access(cfg_file, R_OK) != 0 && errno == ENOENT) {
1.1 nicm 448: xfree(cfg_file);
449: cfg_file = NULL;
450: }
451: }
1.62 nicm 452:
1.68 nicm 453: /*
454: * Figure out the socket path. If specified on the command-line with
455: * -S or -L, use it, otherwise try $TMUX or assume -L default.
456: */
1.70 nicm 457: parse_env(&envdata);
1.68 nicm 458: if (path == NULL) {
459: /* No -L. Try $TMUX, or default. */
460: if (label == NULL) {
1.70 nicm 461: path = envdata.path;
462: if (path == NULL)
1.68 nicm 463: label = xstrdup("default");
464: }
465:
466: /* -L or default set. */
467: if (label != NULL) {
468: if ((path = makesockpath(label)) == NULL) {
469: log_warn("can't create socket");
470: exit(1);
471: }
472: }
1.1 nicm 473: }
1.68 nicm 474: if (label != NULL)
475: xfree(label);
1.1 nicm 476:
1.46 nicm 477: if (shellcmd != NULL) {
478: msg = MSG_SHELL;
479: buf = NULL;
480: len = 0;
1.51 nicm 481: } else {
1.70 nicm 482: cmddata.pid = envdata.pid;
483: cmddata.idx = envdata.idx;
1.62 nicm 484:
1.71 nicm 485: /* Prepare command for server. */
1.51 nicm 486: cmddata.argc = argc;
487: if (cmd_pack_argv(
488: argc, argv, cmddata.argv, sizeof cmddata.argv) != 0) {
489: log_warnx("command too long");
490: exit(1);
491: }
1.62 nicm 492:
1.51 nicm 493: msg = MSG_COMMAND;
494: buf = &cmddata;
495: len = sizeof cmddata;
496: }
1.21 nicm 497:
1.46 nicm 498: if (shellcmd != NULL)
499: cmdflags |= CMD_STARTSERVER;
500: else if (argc == 0) /* new-session is the default */
1.71 nicm 501: cmdflags |= CMD_STARTSERVER|CMD_SENDENVIRON|CMD_CANTNEST;
1.21 nicm 502: else {
503: /*
504: * It sucks parsing the command string twice (in client and
505: * later in server) but it is necessary to get the start server
506: * flag.
507: */
508: if ((cmdlist = cmd_list_parse(argc, argv, &cause)) == NULL) {
509: log_warnx("%s", cause);
510: exit(1);
1.1 nicm 511: }
1.21 nicm 512: cmdflags &= ~CMD_STARTSERVER;
1.80 nicm 513: TAILQ_FOREACH(cmd, &cmdlist->list, qentry) {
1.29 nicm 514: if (cmd->entry->flags & CMD_STARTSERVER)
1.20 nicm 515: cmdflags |= CMD_STARTSERVER;
1.29 nicm 516: if (cmd->entry->flags & CMD_SENDENVIRON)
517: cmdflags |= CMD_SENDENVIRON;
1.71 nicm 518: if (cmd->entry->flags & CMD_CANTNEST)
519: cmdflags |= CMD_CANTNEST;
1.1 nicm 520: }
1.21 nicm 521: cmd_list_free(cmdlist);
1.71 nicm 522: }
523:
524: /*
525: * Check if this could be a nested session, if the command can't nest:
526: * if the socket path matches $TMUX, this is probably the same server.
527: */
528: if (shellcmd == NULL && envdata.path != NULL &&
529: cmdflags & CMD_CANTNEST &&
530: (path == envdata.path || strcmp(path, envdata.path) == 0)) {
531: log_warnx("sessions should be nested with care. "
532: "unset $TMUX to force.");
533: exit(1);
1.1 nicm 534: }
535:
1.78 nicm 536: ev_base = event_init();
537: set_signals(main_signal);
1.77 nicm 538:
1.76 nicm 539: /* Initialise the client socket/start the server. */
540: if ((main_ibuf = client_init(path, cmdflags, flags)) == NULL)
541: exit(1);
542: xfree(path);
543:
1.77 nicm 544: imsg_compose(main_ibuf, msg, PROTOCOL_VERSION, -1, -1, buf, len);
1.74 nicm 545:
1.55 nicm 546: events = EV_READ;
547: if (main_ibuf->w.queued > 0)
548: events |= EV_WRITE;
549: event_once(main_ibuf->fd, events, main_callback, shellcmd, NULL);
550:
551: main_exitval = 0;
552: event_dispatch();
1.1 nicm 553:
1.78 nicm 554: clear_signals();
1.55 nicm 555:
556: client_main(); /* doesn't return */
557: }
1.31 nicm 558:
1.61 nicm 559: /* ARGSUSED */
1.55 nicm 560: void
561: main_signal(int sig, unused short events, unused void *data)
562: {
1.78 nicm 563: int status;
564:
1.55 nicm 565: switch (sig) {
566: case SIGTERM:
567: exit(1);
1.78 nicm 568: case SIGCHLD:
569: waitpid(WAIT_ANY, &status, WNOHANG);
570: break;
1.31 nicm 571: }
1.55 nicm 572: }
1.31 nicm 573:
1.61 nicm 574: /* ARGSUSED */
1.55 nicm 575: void
576: main_callback(unused int fd, short events, void *data)
577: {
578: char *shellcmd = data;
579:
580: if (events & EV_READ)
581: main_dispatch(shellcmd);
1.62 nicm 582:
1.55 nicm 583: if (events & EV_WRITE) {
584: if (msgbuf_write(&main_ibuf->w) < 0)
585: fatalx("msgbuf_write failed");
586: }
1.31 nicm 587:
1.55 nicm 588: events = EV_READ;
589: if (main_ibuf->w.queued > 0)
590: events |= EV_WRITE;
591: event_once(main_ibuf->fd, events, main_callback, shellcmd, NULL);
1.31 nicm 592: }
593:
1.55 nicm 594: void
595: main_dispatch(const char *shellcmd)
1.31 nicm 596: {
597: struct imsg imsg;
598: ssize_t n, datalen;
599: struct msg_print_data printdata;
1.46 nicm 600: struct msg_shell_data shelldata;
1.1 nicm 601:
1.55 nicm 602: if ((n = imsg_read(main_ibuf)) == -1 || n == 0)
1.31 nicm 603: fatalx("imsg_read failed");
1.1 nicm 604:
1.31 nicm 605: for (;;) {
1.55 nicm 606: if ((n = imsg_get(main_ibuf, &imsg)) == -1)
1.31 nicm 607: fatalx("imsg_get failed");
608: if (n == 0)
1.55 nicm 609: return;
1.31 nicm 610: datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
1.1 nicm 611:
1.31 nicm 612: switch (imsg.hdr.type) {
1.1 nicm 613: case MSG_EXIT:
614: case MSG_SHUTDOWN:
1.31 nicm 615: if (datalen != 0)
616: fatalx("bad MSG_EXIT size");
617:
1.55 nicm 618: exit(main_exitval);
1.1 nicm 619: case MSG_ERROR:
620: case MSG_PRINT:
1.31 nicm 621: if (datalen != sizeof printdata)
1.1 nicm 622: fatalx("bad MSG_PRINT size");
1.31 nicm 623: memcpy(&printdata, imsg.data, sizeof printdata);
624: printdata.msg[(sizeof printdata.msg) - 1] = '\0';
1.21 nicm 625:
626: log_info("%s", printdata.msg);
1.55 nicm 627: if (imsg.hdr.type == MSG_ERROR)
628: main_exitval = 1;
1.31 nicm 629: break;
1.1 nicm 630: case MSG_READY:
1.31 nicm 631: if (datalen != 0)
632: fatalx("bad MSG_READY size");
633:
1.55 nicm 634: event_loopexit(NULL); /* move to client_main() */
635: break;
1.31 nicm 636: case MSG_VERSION:
637: if (datalen != 0)
638: fatalx("bad MSG_VERSION size");
639:
640: log_warnx("protocol version mismatch (client %u, "
641: "server %u)", PROTOCOL_VERSION, imsg.hdr.peerid);
1.55 nicm 642: exit(1);
1.46 nicm 643: case MSG_SHELL:
644: if (datalen != sizeof shelldata)
645: fatalx("bad MSG_SHELL size");
646: memcpy(&shelldata, imsg.data, sizeof shelldata);
647: shelldata.shell[(sizeof shelldata.shell) - 1] = '\0';
1.55 nicm 648:
1.78 nicm 649: clear_signals();
1.55 nicm 650:
1.46 nicm 651: shell_exec(shelldata.shell, shellcmd);
1.1 nicm 652: default:
1.31 nicm 653: fatalx("unexpected message");
1.1 nicm 654: }
1.31 nicm 655:
656: imsg_free(&imsg);
1.1 nicm 657: }
658: }