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
)
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
, &id
) != 3)
155 environ_path
= xstrdup(path
);
157 environ_session_id
= id
;
161 makesocketpath(const char *label
)
163 char base
[MAXPATHLEN
], realbase
[MAXPATHLEN
], *path
, *s
;
168 if ((s
= getenv("TMUX_TMPDIR")) != NULL
&& *s
!= '\0')
169 xsnprintf(base
, sizeof base
, "%s/", s
);
170 else if ((s
= getenv("TMPDIR")) != NULL
&& *s
!= '\0')
171 xsnprintf(base
, sizeof base
, "%s/tmux-%u", s
, uid
);
173 xsnprintf(base
, sizeof base
, "%s/tmux-%u", _PATH_TMP
, uid
);
175 if (mkdir(base
, S_IRWXU
) != 0 && errno
!= EEXIST
)
178 if (lstat(base
, &sb
) != 0)
180 if (!S_ISDIR(sb
.st_mode
)) {
184 if (sb
.st_uid
!= uid
|| (sb
.st_mode
& (S_IRWXG
|S_IRWXO
)) != 0) {
189 if (realpath(base
, realbase
) == NULL
)
190 strlcpy(realbase
, base
, sizeof realbase
);
192 xasprintf(&path
, "%s/%s", realbase
, label
);
197 setblocking(int fd
, int state
)
201 if ((mode
= fcntl(fd
, F_GETFL
)) != -1) {
206 fcntl(fd
, F_SETFL
, mode
);
211 shell_exec(const char *shell
, const char *shellcmd
)
213 const char *shellname
, *ptr
;
216 ptr
= strrchr(shell
, '/');
217 if (ptr
!= NULL
&& *(ptr
+ 1) != '\0')
222 xasprintf(&argv0
, "-%s", shellname
);
224 xasprintf(&argv0
, "%s", shellname
);
225 setenv("SHELL", shell
, 1);
227 setblocking(STDIN_FILENO
, 1);
228 setblocking(STDOUT_FILENO
, 1);
229 setblocking(STDERR_FILENO
, 1);
230 closefrom(STDERR_FILENO
+ 1);
232 execl(shell
, argv0
, "-c", shellcmd
, (char *) NULL
);
233 fatal("execl failed");
237 main(int argc
, char **argv
)
240 char *s
, *path
, *label
, *home
, **var
;
241 int opt
, flags
, quiet
, keys
;
244 malloc_options
= (char *) "AFGJPX";
247 setlocale(LC_TIME
, "");
251 login_shell
= (**argv
== '-');
252 while ((opt
= getopt(argc
, argv
, "2c:Cdf:lL:qS:uUv")) != -1) {
255 flags
|= IDENTIFY_256COLOURS
;
259 shell_cmd
= xstrdup(optarg
);
262 if (flags
& IDENTIFY_CONTROL
)
263 flags
|= IDENTIFY_TERMIOS
;
265 flags
|= IDENTIFY_CONTROL
;
269 cfg_file
= xstrdup(optarg
);
276 label
= xstrdup(optarg
);
283 path
= xstrdup(optarg
);
286 flags
|= IDENTIFY_UTF8
;
298 if (shell_cmd
!= NULL
&& argc
!= 0)
301 if (!(flags
& IDENTIFY_UTF8
)) {
303 * If the user has set whichever of LC_ALL, LC_CTYPE or LANG
304 * exist (in that order) to contain UTF-8, it is a safe
305 * assumption that either they are using a UTF-8 terminal, or
306 * if not they know that output from UTF-8-capable programs may
309 if ((s
= getenv("LC_ALL")) == NULL
|| *s
== '\0') {
310 if ((s
= getenv("LC_CTYPE")) == NULL
|| *s
== '\0')
313 if (s
!= NULL
&& (strcasestr(s
, "UTF-8") != NULL
||
314 strcasestr(s
, "UTF8") != NULL
))
315 flags
|= IDENTIFY_UTF8
;
318 environ_init(&global_environ
);
319 for (var
= environ
; *var
!= NULL
; var
++)
320 environ_put(&global_environ
, *var
);
322 options_init(&global_options
, NULL
);
323 options_table_populate_tree(server_options_table
, &global_options
);
324 options_set_number(&global_options
, "quiet", quiet
);
326 options_init(&global_s_options
, NULL
);
327 options_table_populate_tree(session_options_table
, &global_s_options
);
328 options_set_string(&global_s_options
, "default-shell", "%s", getshell());
330 options_init(&global_w_options
, NULL
);
331 options_table_populate_tree(window_options_table
, &global_w_options
);
333 /* Enable UTF-8 if the first client is on UTF-8 terminal. */
334 if (flags
& IDENTIFY_UTF8
) {
335 options_set_number(&global_s_options
, "status-utf8", 1);
336 options_set_number(&global_s_options
, "mouse-utf8", 1);
337 options_set_number(&global_w_options
, "utf8", 1);
340 /* Override keys to vi if VISUAL or EDITOR are set. */
341 if ((s
= getenv("VISUAL")) != NULL
|| (s
= getenv("EDITOR")) != NULL
) {
342 if (strrchr(s
, '/') != NULL
)
343 s
= strrchr(s
, '/') + 1;
344 if (strstr(s
, "vi") != NULL
)
347 keys
= MODEKEY_EMACS
;
348 options_set_number(&global_s_options
, "status-keys", keys
);
349 options_set_number(&global_w_options
, "mode-keys", keys
);
352 /* Locate the configuration file. */
353 if (cfg_file
== NULL
) {
354 home
= getenv("HOME");
355 if (home
== NULL
|| *home
== '\0') {
356 pw
= getpwuid(getuid());
360 xasprintf(&cfg_file
, "%s/.tmux.conf", home
);
361 if (access(cfg_file
, R_OK
) != 0 && errno
== ENOENT
) {
368 * Figure out the socket path. If specified on the command-line with -S
369 * or -L, use it, otherwise try $TMUX or assume -L default.
373 /* If no -L, use the environment. */
375 if (environ_path
!= NULL
)
376 path
= xstrdup(environ_path
);
378 label
= xstrdup("default");
381 /* -L or default set. */
383 if ((path
= makesocketpath(label
)) == NULL
) {
384 fprintf(stderr
, "can't create socket\n");
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
));