4 * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
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.
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.
19 #include <sys/types.h>
34 extern char *malloc_options
;
37 struct options global_options
; /* server options */
38 struct options global_s_options
; /* session options */
39 struct options global_w_options
; /* window options */
40 struct environ global_environ
;
42 struct event_base
*ev_base
;
48 char socket_path
[MAXPATHLEN
];
51 pid_t environ_pid
= -1;
54 __dead
void usage(void);
55 void parseenvironment(void);
56 char *makesocketpath(const char *);
62 "usage: %s [-28lquv] [-c shell-command] [-f file] [-L socket-name]\n"
63 " [-S socket-path] [command [flags]]\n",
69 logfile(const char *name
)
74 if (debug_level
> 0) {
75 xasprintf(&path
, "tmux-%s-%ld.log", name
, (long) getpid());
76 log_open_file(debug_level
, path
);
87 shell
= getenv("SHELL");
88 if (checkshell(shell
))
91 pw
= getpwuid(getuid());
92 if (pw
!= NULL
&& checkshell(pw
->pw_shell
))
93 return (pw
->pw_shell
);
95 return (_PATH_BSHELL
);
99 checkshell(const char *shell
)
101 if (shell
== NULL
|| *shell
== '\0' || *shell
!= '/')
105 if (access(shell
, X_OK
) != 0)
111 areshell(const char *shell
)
113 const char *progname
, *ptr
;
115 if ((ptr
= strrchr(shell
, '/')) != NULL
)
119 progname
= __progname
;
120 if (*progname
== '-')
122 if (strcmp(ptr
, progname
) == 0)
128 get_full_path(const char *wd
, const char *path
)
130 static char newpath
[MAXPATHLEN
];
131 char oldpath
[MAXPATHLEN
];
133 if (getcwd(oldpath
, sizeof oldpath
) == NULL
)
137 if (realpath(path
, newpath
) != 0)
144 parseenvironment(void)
146 char *env
, path
[256];
150 if ((env
= getenv("TMUX")) == NULL
)
153 if (sscanf(env
, "%255[^,],%ld,%d", path
, &pid
, &idx
) != 3)
155 environ_path
= xstrdup(path
);
161 makesocketpath(const char *label
)
163 char base
[MAXPATHLEN
], *path
, *s
;
168 if ((s
= getenv("TMPDIR")) == NULL
|| *s
== '\0')
169 xsnprintf(base
, sizeof base
, "%s/tmux-%u", _PATH_TMP
, uid
);
171 xsnprintf(base
, sizeof base
, "%s/tmux-%u", s
, uid
);
173 if (mkdir(base
, S_IRWXU
) != 0 && errno
!= EEXIST
)
176 if (lstat(base
, &sb
) != 0)
178 if (!S_ISDIR(sb
.st_mode
)) {
182 if (sb
.st_uid
!= uid
|| (sb
.st_mode
& (S_IRWXG
|S_IRWXO
)) != 0) {
187 xasprintf(&path
, "%s/%s", base
, label
);
192 setblocking(int fd
, int state
)
196 if ((mode
= fcntl(fd
, F_GETFL
)) != -1) {
201 fcntl(fd
, F_SETFL
, mode
);
206 shell_exec(const char *shell
, const char *shellcmd
)
208 const char *shellname
, *ptr
;
211 ptr
= strrchr(shell
, '/');
212 if (ptr
!= NULL
&& *(ptr
+ 1) != '\0')
217 xasprintf(&argv0
, "-%s", shellname
);
219 xasprintf(&argv0
, "%s", shellname
);
220 setenv("SHELL", shell
, 1);
222 setblocking(STDIN_FILENO
, 1);
223 setblocking(STDOUT_FILENO
, 1);
224 setblocking(STDERR_FILENO
, 1);
225 closefrom(STDERR_FILENO
+ 1);
227 execl(shell
, argv0
, "-c", shellcmd
, (char *) NULL
);
228 fatal("execl failed");
232 main(int argc
, char **argv
)
235 char *s
, *path
, *label
, *home
, **var
;
236 int opt
, flags
, quiet
, keys
;
239 malloc_options
= (char *) "AFGJPX";
244 login_shell
= (**argv
== '-');
245 while ((opt
= getopt(argc
, argv
, "28c:df:lL:qS:uUv")) != -1) {
248 flags
|= IDENTIFY_256COLOURS
;
249 flags
&= ~IDENTIFY_88COLOURS
;
252 flags
|= IDENTIFY_88COLOURS
;
253 flags
&= ~IDENTIFY_256COLOURS
;
256 if (shell_cmd
!= NULL
)
258 shell_cmd
= xstrdup(optarg
);
261 if (cfg_file
!= NULL
)
263 cfg_file
= xstrdup(optarg
);
271 label
= xstrdup(optarg
);
279 path
= xstrdup(optarg
);
282 flags
|= IDENTIFY_UTF8
;
294 if (shell_cmd
!= NULL
&& argc
!= 0)
297 log_open_tty(debug_level
);
299 if (!(flags
& IDENTIFY_UTF8
)) {
301 * If the user has set whichever of LC_ALL, LC_CTYPE or LANG
302 * exist (in that order) to contain UTF-8, it is a safe
303 * assumption that either they are using a UTF-8 terminal, or
304 * if not they know that output from UTF-8-capable programs may
307 if ((s
= getenv("LC_ALL")) == NULL
|| *s
== '\0') {
308 if ((s
= getenv("LC_CTYPE")) == NULL
|| *s
== '\0')
311 if (s
!= NULL
&& (strcasestr(s
, "UTF-8") != NULL
||
312 strcasestr(s
, "UTF8") != NULL
))
313 flags
|= IDENTIFY_UTF8
;
316 environ_init(&global_environ
);
317 for (var
= environ
; *var
!= NULL
; var
++)
318 environ_put(&global_environ
, *var
);
320 options_init(&global_options
, NULL
);
321 options_table_populate_tree(server_options_table
, &global_options
);
322 options_set_number(&global_options
, "quiet", quiet
);
324 options_init(&global_s_options
, NULL
);
325 options_table_populate_tree(session_options_table
, &global_s_options
);
326 options_set_string(&global_s_options
, "default-shell", "%s", getshell());
328 options_init(&global_w_options
, NULL
);
329 options_table_populate_tree(window_options_table
, &global_w_options
);
331 /* Enable UTF-8 if the first client is on UTF-8 terminal. */
332 if (flags
& IDENTIFY_UTF8
) {
333 options_set_number(&global_s_options
, "status-utf8", 1);
334 options_set_number(&global_s_options
, "mouse-utf8", 1);
335 options_set_number(&global_w_options
, "utf8", 1);
338 /* Override keys to vi if VISUAL or EDITOR are set. */
339 if ((s
= getenv("VISUAL")) != NULL
|| (s
= getenv("EDITOR")) != NULL
) {
340 if (strrchr(s
, '/') != NULL
)
341 s
= strrchr(s
, '/') + 1;
342 if (strstr(s
, "vi") != NULL
)
345 keys
= MODEKEY_EMACS
;
346 options_set_number(&global_s_options
, "status-keys", keys
);
347 options_set_number(&global_w_options
, "mode-keys", keys
);
350 /* Locate the configuration file. */
351 if (cfg_file
== NULL
) {
352 home
= getenv("HOME");
353 if (home
== NULL
|| *home
== '\0') {
354 pw
= getpwuid(getuid());
358 xasprintf(&cfg_file
, "%s/%s", home
, DEFAULT_CFG
);
359 if (access(cfg_file
, R_OK
) != 0 && errno
== ENOENT
) {
366 * Figure out the socket path. If specified on the command-line with -S
367 * or -L, use it, otherwise try $TMUX or assume -L default.
371 /* If no -L, use the environment. */
373 if (environ_path
!= NULL
)
374 path
= xstrdup(environ_path
);
376 label
= xstrdup("default");
379 /* -L or default set. */
381 if ((path
= makesocketpath(label
)) == NULL
) {
382 log_warn("can't create socket");
389 if (realpath(path
, socket_path
) == NULL
)
390 strlcpy(socket_path
, path
, sizeof socket_path
);
393 /* Set process title. */
394 setproctitle("%s (%s)", __progname
, socket_path
);
396 /* Pass control to the client. */
397 ev_base
= event_init();
398 exit(client_main(argc
, argv
, flags
));