mirror of
https://github.com/tmux/tmux.git
synced 2024-11-16 17:39:09 +00:00
be0c79f3ad
tmux-1000. The default socket is thus /tmp/tmux-UID/default. To start a
separate server, the new -L command line option should be used: this creates a
socket in the same directory with a different name ("-L main" will create
socket called "main"). -S should only be used to place the socket outside
/tmp. This makes sockets a little more secure and a bit more convenient to use
multiple servers.
487 lines
12 KiB
C
487 lines
12 KiB
C
/* $Id: tmux.c,v 1.110 2009-03-27 15:57:10 nicm Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
|
|
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
|
|
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
|
|
#include <errno.h>
|
|
#include <pwd.h>
|
|
#include <signal.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <syslog.h>
|
|
#include <unistd.h>
|
|
|
|
#ifndef NO_PATHS_H
|
|
#include <paths.h>
|
|
#endif
|
|
|
|
#include "tmux.h"
|
|
|
|
#ifdef DEBUG
|
|
/* DragonFly uses an OpenBSD-like malloc() since 1.6 */
|
|
#if defined(__OpenBSD__) || defined(__DragonFly__)
|
|
const char *malloc_options = "AFGJPX";
|
|
#endif
|
|
#ifdef __FreeBSD__
|
|
const char *_malloc_options = "AJX";
|
|
#endif
|
|
#endif
|
|
|
|
volatile sig_atomic_t sigwinch;
|
|
volatile sig_atomic_t sigterm;
|
|
volatile sig_atomic_t sigcont;
|
|
volatile sig_atomic_t sigchld;
|
|
|
|
char *cfg_file;
|
|
struct options global_options;
|
|
struct options global_window_options;
|
|
|
|
int server_locked;
|
|
char *server_password;
|
|
time_t server_activity;
|
|
|
|
int debug_level;
|
|
int be_quiet;
|
|
time_t start_time;
|
|
char *socket_path;
|
|
|
|
__dead void usage(void);
|
|
char *makesockpath(const char *);
|
|
|
|
#ifdef NO_PROGNAME
|
|
const char *__progname = "tmux";
|
|
#endif
|
|
|
|
__dead void
|
|
usage(void)
|
|
{
|
|
fprintf(stderr, "usage: "
|
|
"%s [-2dquVv] [-f file] [-S socket-path] [command [flags]]\n",
|
|
__progname);
|
|
exit(1);
|
|
}
|
|
|
|
void
|
|
logfile(const char *name)
|
|
{
|
|
char *path;
|
|
|
|
log_close();
|
|
if (debug_level > 0) {
|
|
xasprintf(
|
|
&path, "%s-%s-%ld.log", __progname, name, (long) getpid());
|
|
log_open_file(debug_level, path);
|
|
xfree(path);
|
|
}
|
|
}
|
|
|
|
void
|
|
sighandler(int sig)
|
|
{
|
|
int saved_errno;
|
|
|
|
saved_errno = errno;
|
|
switch (sig) {
|
|
case SIGWINCH:
|
|
sigwinch = 1;
|
|
break;
|
|
case SIGTERM:
|
|
sigterm = 1;
|
|
break;
|
|
case SIGCHLD:
|
|
sigchld = 1;
|
|
break;
|
|
case SIGCONT:
|
|
sigcont = 1;
|
|
break;
|
|
}
|
|
errno = saved_errno;
|
|
}
|
|
|
|
void
|
|
siginit(void)
|
|
{
|
|
struct sigaction act;
|
|
|
|
memset(&act, 0, sizeof act);
|
|
sigemptyset(&act.sa_mask);
|
|
act.sa_flags = SA_RESTART;
|
|
|
|
act.sa_handler = SIG_IGN;
|
|
if (sigaction(SIGPIPE, &act, NULL) != 0)
|
|
fatal("sigaction failed");
|
|
if (sigaction(SIGUSR1, &act, NULL) != 0)
|
|
fatal("sigaction failed");
|
|
if (sigaction(SIGUSR2, &act, NULL) != 0)
|
|
fatal("sigaction failed");
|
|
if (sigaction(SIGINT, &act, NULL) != 0)
|
|
fatal("sigaction failed");
|
|
if (sigaction(SIGTSTP, &act, NULL) != 0)
|
|
fatal("sigaction failed");
|
|
if (sigaction(SIGQUIT, &act, NULL) != 0)
|
|
fatal("sigaction failed");
|
|
|
|
act.sa_handler = sighandler;
|
|
if (sigaction(SIGWINCH, &act, NULL) != 0)
|
|
fatal("sigaction failed");
|
|
if (sigaction(SIGTERM, &act, NULL) != 0)
|
|
fatal("sigaction failed");
|
|
if (sigaction(SIGCHLD, &act, NULL) != 0)
|
|
fatal("sigaction failed");
|
|
}
|
|
|
|
void
|
|
sigreset(void)
|
|
{
|
|
struct sigaction act;
|
|
|
|
memset(&act, 0, sizeof act);
|
|
sigemptyset(&act.sa_mask);
|
|
|
|
act.sa_handler = SIG_DFL;
|
|
if (sigaction(SIGPIPE, &act, NULL) != 0)
|
|
fatal("sigaction failed");
|
|
if (sigaction(SIGUSR1, &act, NULL) != 0)
|
|
fatal("sigaction failed");
|
|
if (sigaction(SIGUSR2, &act, NULL) != 0)
|
|
fatal("sigaction failed");
|
|
if (sigaction(SIGINT, &act, NULL) != 0)
|
|
fatal("sigaction failed");
|
|
if (sigaction(SIGTSTP, &act, NULL) != 0)
|
|
fatal("sigaction failed");
|
|
if (sigaction(SIGQUIT, &act, NULL) != 0)
|
|
fatal("sigaction failed");
|
|
if (sigaction(SIGWINCH, &act, NULL) != 0)
|
|
fatal("sigaction failed");
|
|
if (sigaction(SIGTERM, &act, NULL) != 0)
|
|
fatal("sigaction failed");
|
|
if (sigaction(SIGCHLD, &act, NULL) != 0)
|
|
fatal("sigaction failed");
|
|
}
|
|
|
|
char *
|
|
makesockpath(const char *label)
|
|
{
|
|
char base[MAXPATHLEN], *path;
|
|
struct stat sb;
|
|
u_int uid;
|
|
|
|
uid = getuid();
|
|
xsnprintf(base, MAXPATHLEN, "%s/%s-%d", _PATH_TMP, __progname, uid);
|
|
|
|
if (mkdir(base, S_IRWXU) != 0 && errno != EEXIST)
|
|
return (NULL);
|
|
|
|
if (lstat(base, &sb) != 0)
|
|
return (NULL);
|
|
if (!S_ISDIR(sb.st_mode) || sb.st_uid != uid) {
|
|
errno = EACCES;
|
|
return (NULL);
|
|
}
|
|
if ((sb.st_mode & (S_IRWXG|S_IRWXO)) != 0) {
|
|
errno = EACCES;
|
|
return (NULL);
|
|
}
|
|
|
|
xasprintf(&path, "%s/%s", base, label);
|
|
return (path);
|
|
}
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
struct client_ctx cctx;
|
|
struct msg_command_data cmddata;
|
|
struct buffer *b;
|
|
struct cmd_list *cmdlist;
|
|
struct cmd *cmd;
|
|
struct pollfd pfd;
|
|
struct hdr hdr;
|
|
const char *shell;
|
|
struct passwd *pw;
|
|
char *path, *label, *cause, *home, *pass = NULL;
|
|
char cwd[MAXPATHLEN];
|
|
int retcode, opt, flags, unlock, start_server;
|
|
|
|
unlock = flags = 0;
|
|
label = path = NULL;
|
|
while ((opt = getopt(argc, argv, "28df:L:qS:uUVv")) != -1) {
|
|
switch (opt) {
|
|
case '2':
|
|
flags |= IDENTIFY_256COLOURS;
|
|
flags &= ~IDENTIFY_88COLOURS;
|
|
break;
|
|
case '8':
|
|
flags |= IDENTIFY_88COLOURS;
|
|
flags &= ~IDENTIFY_256COLOURS;
|
|
break;
|
|
case 'f':
|
|
cfg_file = xstrdup(optarg);
|
|
break;
|
|
case 'L':
|
|
if (path != NULL) {
|
|
log_warnx("-L and -S cannot be used together");
|
|
exit(1);
|
|
}
|
|
if (label != NULL)
|
|
xfree(label);
|
|
label = xstrdup(optarg);
|
|
break;
|
|
case 'S':
|
|
if (label != NULL) {
|
|
log_warnx("-L and -S cannot be used together");
|
|
exit(1);
|
|
}
|
|
if (path != NULL)
|
|
xfree(path);
|
|
path = xstrdup(optarg);
|
|
break;
|
|
case 'q':
|
|
be_quiet = 1;
|
|
break;
|
|
case 'u':
|
|
flags |= IDENTIFY_UTF8;
|
|
break;
|
|
case 'U':
|
|
unlock = 1;
|
|
break;
|
|
case 'd':
|
|
flags |= IDENTIFY_HASDEFAULTS;
|
|
break;
|
|
case 'v':
|
|
debug_level++;
|
|
break;
|
|
case 'V':
|
|
printf("%s " BUILD "\n", __progname);
|
|
exit(0);
|
|
default:
|
|
usage();
|
|
}
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
log_open_tty(debug_level);
|
|
siginit();
|
|
|
|
options_init(&global_options, NULL);
|
|
options_set_number(&global_options, "bell-action", BELL_ANY);
|
|
options_set_number(&global_options, "buffer-limit", 9);
|
|
options_set_number(&global_options, "display-time", 750);
|
|
options_set_number(&global_options, "history-limit", 2000);
|
|
options_set_number(&global_options, "message-bg", 3);
|
|
options_set_number(&global_options, "message-fg", 0);
|
|
options_set_number(&global_options, "message-attr", GRID_ATTR_REVERSE);
|
|
options_set_number(&global_options, "prefix", META);
|
|
options_set_number(&global_options, "repeat-time", 500);
|
|
options_set_number(&global_options, "set-titles", 1);
|
|
options_set_number(&global_options, "lock-after-time", 0);
|
|
options_set_number(&global_options, "set-remain-on-exit", 0);
|
|
options_set_number(&global_options, "status", 1);
|
|
options_set_number(&global_options, "status-bg", 2);
|
|
options_set_number(&global_options, "status-fg", 0);
|
|
options_set_number(&global_options, "status-attr", GRID_ATTR_REVERSE);
|
|
options_set_number(&global_options, "status-interval", 15);
|
|
options_set_number(&global_options, "status-left-length", 10);
|
|
options_set_number(&global_options, "status-right-length", 40);
|
|
options_set_string(&global_options, "status-left", "[#S]");
|
|
options_set_string(
|
|
&global_options, "status-right", "\"#24T\" %%H:%%M %%d-%%b-%%y");
|
|
options_set_number(&global_options, "status-keys", MODEKEY_EMACS);
|
|
options_init(&global_window_options, NULL);
|
|
options_set_number(&global_window_options, "aggressive-resize", 0);
|
|
options_set_number(&global_window_options, "clock-mode-colour", 4);
|
|
options_set_number(&global_window_options, "clock-mode-style", 1);
|
|
options_set_number(&global_window_options, "force-height", 0);
|
|
options_set_number(&global_window_options, "force-width", 0);
|
|
options_set_number(&global_window_options, "automatic-rename", 1);
|
|
options_set_number(&global_window_options, "mode-bg", 3);
|
|
options_set_number(&global_window_options, "mode-fg", 0);
|
|
options_set_number(
|
|
&global_window_options, "mode-attr", GRID_ATTR_REVERSE);
|
|
options_set_number(&global_window_options, "mode-keys", MODEKEY_EMACS);
|
|
options_set_number(&global_window_options, "monitor-activity", 0);
|
|
options_set_number(&global_window_options, "utf8", 0);
|
|
options_set_number(&global_window_options, "xterm-keys", 0);
|
|
options_set_number(&global_window_options, "remain-on-exit", 0);
|
|
options_set_number(&global_window_options, "window-status-bg", 8);
|
|
options_set_number(&global_window_options, "window-status-fg", 8);
|
|
options_set_number(&global_window_options, "window-status-attr", 0);
|
|
|
|
if (cfg_file == NULL) {
|
|
home = getenv("HOME");
|
|
if (home == NULL || *home == '\0') {
|
|
pw = getpwuid(getuid());
|
|
if (pw != NULL)
|
|
home = pw->pw_dir;
|
|
endpwent();
|
|
}
|
|
xasprintf(&cfg_file, "%s/%s", home, DEFAULT_CFG);
|
|
if (access(cfg_file, R_OK) != 0) {
|
|
xfree(cfg_file);
|
|
cfg_file = NULL;
|
|
}
|
|
} else {
|
|
if (access(cfg_file, R_OK) != 0) {
|
|
log_warn("%s", cfg_file);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
if (label == NULL)
|
|
label = xstrdup("default");
|
|
if (path == NULL && (path = makesockpath(label)) == NULL) {
|
|
log_warn("can't create socket");
|
|
exit(1);
|
|
}
|
|
xfree(label);
|
|
|
|
shell = getenv("SHELL");
|
|
if (shell == NULL || *shell == '\0') {
|
|
pw = getpwuid(getuid());
|
|
if (pw != NULL)
|
|
shell = pw->pw_shell;
|
|
endpwent();
|
|
if (shell == NULL || *shell == '\0')
|
|
shell = _PATH_BSHELL;
|
|
}
|
|
options_set_string(
|
|
&global_options, "default-command", "exec %s", shell);
|
|
|
|
|
|
if (getcwd(cwd, sizeof cwd) == NULL) {
|
|
log_warn("getcwd");
|
|
exit(1);
|
|
}
|
|
options_set_string(&global_options, "default-path", "%s", cwd);
|
|
|
|
if (unlock) {
|
|
if (argc != 0) {
|
|
log_warnx("can't specify a command when unlocking");
|
|
exit(1);
|
|
}
|
|
cmdlist = NULL;
|
|
if ((pass = getpass("Password: ")) == NULL)
|
|
exit(1);
|
|
start_server = 0;
|
|
} else {
|
|
if (argc == 0) {
|
|
cmd = xmalloc(sizeof *cmd);
|
|
cmd->entry = &cmd_new_session_entry;
|
|
cmd->entry->init(cmd, 0);
|
|
|
|
cmdlist = xmalloc(sizeof *cmdlist);
|
|
TAILQ_INIT(cmdlist);
|
|
TAILQ_INSERT_HEAD(cmdlist, cmd, qentry);
|
|
} else {
|
|
cmdlist = cmd_list_parse(argc, argv, &cause);
|
|
if (cmdlist == NULL) {
|
|
log_warnx("%s", cause);
|
|
exit(1);
|
|
}
|
|
}
|
|
start_server = 0;
|
|
TAILQ_FOREACH(cmd, cmdlist, qentry) {
|
|
if (cmd->entry->flags & CMD_STARTSERVER) {
|
|
start_server = 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
memset(&cctx, 0, sizeof cctx);
|
|
if (client_init(path, &cctx, start_server, flags) != 0)
|
|
exit(1);
|
|
xfree(path);
|
|
|
|
b = buffer_create(BUFSIZ);
|
|
if (unlock) {
|
|
cmd_send_string(b, pass);
|
|
client_write_server(
|
|
&cctx, MSG_UNLOCK, BUFFER_OUT(b), BUFFER_USED(b));
|
|
} else {
|
|
cmd_list_send(cmdlist, b);
|
|
cmd_list_free(cmdlist);
|
|
client_fill_session(&cmddata);
|
|
client_write_server2(&cctx, MSG_COMMAND,
|
|
&cmddata, sizeof cmddata, BUFFER_OUT(b), BUFFER_USED(b));
|
|
}
|
|
buffer_destroy(b);
|
|
|
|
retcode = 0;
|
|
for (;;) {
|
|
pfd.fd = cctx.srv_fd;
|
|
pfd.events = POLLIN;
|
|
if (BUFFER_USED(cctx.srv_out) > 0)
|
|
pfd.events |= POLLOUT;
|
|
|
|
if (poll(&pfd, 1, INFTIM) == -1) {
|
|
if (errno == EAGAIN || errno == EINTR)
|
|
continue;
|
|
fatal("poll failed");
|
|
}
|
|
|
|
if (buffer_poll(&pfd, cctx.srv_in, cctx.srv_out) != 0)
|
|
goto out;
|
|
|
|
restart:
|
|
if (BUFFER_USED(cctx.srv_in) < sizeof hdr)
|
|
continue;
|
|
memcpy(&hdr, BUFFER_OUT(cctx.srv_in), sizeof hdr);
|
|
if (BUFFER_USED(cctx.srv_in) < (sizeof hdr) + hdr.size)
|
|
continue;
|
|
buffer_remove(cctx.srv_in, sizeof hdr);
|
|
|
|
switch (hdr.type) {
|
|
case MSG_EXIT:
|
|
case MSG_SHUTDOWN:
|
|
goto out;
|
|
case MSG_ERROR:
|
|
retcode = 1;
|
|
/* FALLTHROUGH */
|
|
case MSG_PRINT:
|
|
if (hdr.size > INT_MAX - 1)
|
|
fatalx("bad MSG_PRINT size");
|
|
log_info("%.*s",
|
|
(int) hdr.size, BUFFER_OUT(cctx.srv_in));
|
|
if (hdr.size != 0)
|
|
buffer_remove(cctx.srv_in, hdr.size);
|
|
goto restart;
|
|
case MSG_READY:
|
|
retcode = client_main(&cctx);
|
|
goto out;
|
|
default:
|
|
fatalx("unexpected command");
|
|
}
|
|
}
|
|
|
|
out:
|
|
options_free(&global_options);
|
|
options_free(&global_window_options);
|
|
|
|
close(cctx.srv_fd);
|
|
buffer_destroy(cctx.srv_in);
|
|
buffer_destroy(cctx.srv_out);
|
|
|
|
#ifdef DEBUG
|
|
xmalloc_report(getpid(), "client");
|
|
#endif
|
|
return (retcode);
|
|
}
|