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>
35 extern char *malloc_options
;
38 struct options global_options
; /* server options */
39 struct options global_s_options
; /* session options */
40 struct options global_w_options
; /* window options */
41 struct environ global_environ
;
43 struct event_base
*ev_base
;
49 char socket_path
[MAXPATHLEN
];
52 pid_t environ_pid
= -1;
53 int environ_session_id
= -1;
55 __dead
void usage(void);
56 void parseenvironment(void);
57 char *makesocketpath(const char *);
63 "usage: %s [-28lquv] [-c shell-command] [-f file] [-L socket-name]\n"
64 " [-S socket-path] [command [flags]]\n",
70 logfile(const char *name
)
74 if (debug_level
> 0) {
75 xasprintf(&path
, "tmux-%s-%ld.log", name
, (long) getpid());
76 log_open(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
)
131 static char newpath
[MAXPATHLEN
];
134 fd
= open(".", O_RDONLY
);
139 if (chdir(wd
) == 0) {
140 if (realpath(path
, newpath
) == 0)
152 parseenvironment(void)
154 char *env
, path
[256];
158 if ((env
= getenv("TMUX")) == NULL
)
161 if (sscanf(env
, "%255[^,],%ld,%d", path
, &pid
, &id
) != 3)
163 environ_path
= xstrdup(path
);
165 environ_session_id
= id
;
169 makesocketpath(const char *label
)
171 char base
[MAXPATHLEN
], realbase
[MAXPATHLEN
], *path
, *s
;
176 if ((s
= getenv("TMUX_TMPDIR")) != NULL
&& *s
!= '\0')
177 xsnprintf(base
, sizeof base
, "%s/", s
);
178 else if ((s
= getenv("TMPDIR")) != NULL
&& *s
!= '\0')
179 xsnprintf(base
, sizeof base
, "%s/tmux-%u", s
, uid
);
181 xsnprintf(base
, sizeof base
, "%s/tmux-%u", _PATH_TMP
, uid
);
183 if (mkdir(base
, S_IRWXU
) != 0 && errno
!= EEXIST
)
186 if (lstat(base
, &sb
) != 0)
188 if (!S_ISDIR(sb
.st_mode
)) {
192 if (sb
.st_uid
!= uid
|| (sb
.st_mode
& (S_IRWXG
|S_IRWXO
)) != 0) {
197 if (realpath(base
, realbase
) == NULL
)
198 strlcpy(realbase
, base
, sizeof realbase
);
200 xasprintf(&path
, "%s/%s", realbase
, label
);
205 setblocking(int fd
, int state
)
209 if ((mode
= fcntl(fd
, F_GETFL
)) != -1) {
214 fcntl(fd
, F_SETFL
, mode
);
219 shell_exec(const char *shell
, const char *shellcmd
)
221 const char *shellname
, *ptr
;
224 ptr
= strrchr(shell
, '/');
225 if (ptr
!= NULL
&& *(ptr
+ 1) != '\0')
230 xasprintf(&argv0
, "-%s", shellname
);
232 xasprintf(&argv0
, "%s", shellname
);
233 setenv("SHELL", shell
, 1);
235 setblocking(STDIN_FILENO
, 1);
236 setblocking(STDOUT_FILENO
, 1);
237 setblocking(STDERR_FILENO
, 1);
238 closefrom(STDERR_FILENO
+ 1);
240 execl(shell
, argv0
, "-c", shellcmd
, (char *) NULL
);
241 fatal("execl failed");
245 main(int argc
, char **argv
)
248 char *s
, *path
, *label
, *home
, **var
;
249 int opt
, flags
, quiet
, keys
;
252 malloc_options
= (char *) "AFGJPX";
255 setlocale(LC_TIME
, "");
259 login_shell
= (**argv
== '-');
260 while ((opt
= getopt(argc
, argv
, "2c:Cdf:lL:qS:uUv")) != -1) {
263 flags
|= IDENTIFY_256COLOURS
;
267 shell_cmd
= xstrdup(optarg
);
270 if (flags
& IDENTIFY_CONTROL
)
271 flags
|= IDENTIFY_TERMIOS
;
273 flags
|= IDENTIFY_CONTROL
;
277 cfg_file
= xstrdup(optarg
);
284 label
= xstrdup(optarg
);
291 path
= xstrdup(optarg
);
294 flags
|= IDENTIFY_UTF8
;
306 if (shell_cmd
!= NULL
&& argc
!= 0)
309 if (!(flags
& IDENTIFY_UTF8
)) {
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
317 if ((s
= getenv("LC_ALL")) == NULL
|| *s
== '\0') {
318 if ((s
= getenv("LC_CTYPE")) == NULL
|| *s
== '\0')
321 if (s
!= NULL
&& (strcasestr(s
, "UTF-8") != NULL
||
322 strcasestr(s
, "UTF8") != NULL
))
323 flags
|= IDENTIFY_UTF8
;
326 environ_init(&global_environ
);
327 for (var
= environ
; *var
!= NULL
; var
++)
328 environ_put(&global_environ
, *var
);
330 options_init(&global_options
, NULL
);
331 options_table_populate_tree(server_options_table
, &global_options
);
332 options_set_number(&global_options
, "quiet", quiet
);
334 options_init(&global_s_options
, NULL
);
335 options_table_populate_tree(session_options_table
, &global_s_options
);
336 options_set_string(&global_s_options
, "default-shell", "%s", getshell());
338 options_init(&global_w_options
, NULL
);
339 options_table_populate_tree(window_options_table
, &global_w_options
);
341 /* Enable UTF-8 if the first client is on UTF-8 terminal. */
342 if (flags
& IDENTIFY_UTF8
) {
343 options_set_number(&global_s_options
, "status-utf8", 1);
344 options_set_number(&global_s_options
, "mouse-utf8", 1);
345 options_set_number(&global_w_options
, "utf8", 1);
348 /* Override keys to vi if VISUAL or EDITOR are set. */
349 if ((s
= getenv("VISUAL")) != NULL
|| (s
= getenv("EDITOR")) != NULL
) {
350 if (strrchr(s
, '/') != NULL
)
351 s
= strrchr(s
, '/') + 1;
352 if (strstr(s
, "vi") != NULL
)
355 keys
= MODEKEY_EMACS
;
356 options_set_number(&global_s_options
, "status-keys", keys
);
357 options_set_number(&global_w_options
, "mode-keys", keys
);
360 /* Locate the configuration file. */
361 if (cfg_file
== NULL
) {
362 home
= getenv("HOME");
363 if (home
== NULL
|| *home
== '\0') {
364 pw
= getpwuid(getuid());
368 xasprintf(&cfg_file
, "%s/.tmux.conf", home
);
369 if (access(cfg_file
, R_OK
) != 0 && errno
== ENOENT
) {
376 * Figure out the socket path. If specified on the command-line with -S
377 * or -L, use it, otherwise try $TMUX or assume -L default.
381 /* If no -L, use the environment. */
383 if (environ_path
!= NULL
)
384 path
= xstrdup(environ_path
);
386 label
= xstrdup("default");
389 /* -L or default set. */
391 if ((path
= makesocketpath(label
)) == NULL
) {
392 fprintf(stderr
, "can't create socket\n");
398 strlcpy(socket_path
, path
, sizeof socket_path
);
401 /* Set process title. */
402 setproctitle("%s (%s)", __progname
, socket_path
);
404 /* Pass control to the client. */
405 ev_base
= event_init();
406 exit(client_main(argc
, argv
, flags
));