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https://github.com/tmate-io/tmate.git
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Sockets in /tmp are now created in a subdirectory named, tmux-UID, eg
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.
This commit is contained in:
Nicholas Marriott
parent
0cb069a6b1
commit
be0c79f3ad
12
CHANGES
12
CHANGES
@ -1,3 +1,13 @@
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27 March 2009
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* Sockets in /tmp are now created in a subdirectory named, tmux-UID, eg
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tmux-1000. The default socket is thus /tmp/tmux-UID/default. To start a
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separate server, the new -L command line option should be used: this creates
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a socket in the same directory with a different name ("-L main" will create
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socket called "main"). -S should only be used to place the socket outside
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/tmp. This makes sockets a little more secure and a bit more convenient to
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use multiple servers.
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21 March 2009
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* New session flag "set-remain-on-exit" to set remain-on-exit flag for new
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@ -1132,7 +1142,7 @@
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(including mutt, emacs). No status bar yet and no key remapping or other
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customisation.
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$Id: CHANGES,v 1.259 2009-03-21 12:44:05 nicm Exp $
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$Id: CHANGES,v 1.260 2009-03-27 15:57:09 nicm Exp $
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LocalWords: showw utf UTF fulvio ciriaco joshe OSC APC gettime abc DEF OA clr
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LocalWords: rivo nurges lscm Erdely eol smysession mysession ek dstname RB ms
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1
TODO
1
TODO
@ -96,3 +96,4 @@
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- refer to windows by name etc (duplicates? fnmatch?)
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- n/p repeat is annoying, turn off
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- repeat should be a key flag and should be configurable (bind -r)
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- document -L and update socket path bits in tmux.1
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38
server.c
38
server.c
@ -1,4 +1,4 @@
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/* $Id: server.c,v 1.127 2009-03-27 08:46:02 nicm Exp $ */
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/* $Id: server.c,v 1.128 2009-03-27 15:57:10 nicm Exp $ */
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/*
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* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
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@ -43,7 +43,7 @@
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/* Client list. */
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struct clients clients;
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int server_main(const char *, int);
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int server_main(int);
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void server_shutdown(void);
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void server_child_signal(void);
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void server_fill_windows(struct pollfd **);
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@ -59,7 +59,7 @@ void server_check_redraw(struct client *);
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void server_redraw_locked(struct client *);
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void server_check_timers(struct client *);
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void server_second_timers(void);
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int server_update_socket(const char *);
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int server_update_socket(void);
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/* Create a new client. */
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struct client *
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@ -127,6 +127,9 @@ server_start(const char *path)
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mode_t mask;
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int n, fd, pair[2], mode;
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char *cause;
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#ifndef NO_SETPROCTITLE
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char rpathbuf[MAXPATHLEN];
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#endif
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/* The first client is special and gets a socketpair; create it. */
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if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pair) != 0)
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@ -170,17 +173,20 @@ server_start(const char *path)
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log_warnx("%s", cause);
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exit(1);
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}
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logfile("server");
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#ifndef NO_SETPROCTITLE
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setproctitle("server (%s)", path);
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#endif
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log_debug("server started, pid %ld", (long) getpid());
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log_debug("socket path %s", socket_path);
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#ifndef NO_SETPROCTITLE
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if (realpath(socket_path, rpathbuf) == NULL)
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strlcpy(rpathbuf, socket_path, sizeof rpathbuf);
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setproctitle("server (%s)", rpathbuf);
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#endif
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memset(&sa, 0, sizeof sa);
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sa.sun_family = AF_UNIX;
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size = strlcpy(sa.sun_path, path, sizeof sa.sun_path);
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size = strlcpy(sa.sun_path, socket_path, sizeof sa.sun_path);
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if (size >= sizeof sa.sun_path) {
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errno = ENAMETOOLONG;
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fatal("socket failed");
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@ -207,7 +213,7 @@ server_start(const char *path)
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server_create_client(pair[1]);
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n = server_main(path, fd);
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n = server_main(fd);
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#ifdef DEBUG
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xmalloc_report(getpid(), "server");
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#endif
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@ -216,7 +222,7 @@ server_start(const char *path)
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/* Main server loop. */
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int
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server_main(const char *srv_path, int srv_fd)
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server_main(int srv_fd)
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{
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struct window *w;
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struct pollfd *pfds, *pfd;
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@ -263,7 +269,7 @@ server_main(const char *srv_path, int srv_fd)
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/* Update socket permissions. */
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xtimeout = INFTIM;
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if (sigterm || server_update_socket(srv_path) != 0)
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if (sigterm || server_update_socket() != 0)
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xtimeout = 100;
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/* Do the poll. */
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@ -337,7 +343,9 @@ server_main(const char *srv_path, int srv_fd)
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key_bindings_free();
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close(srv_fd);
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unlink(srv_path);
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unlink(socket_path);
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xfree(socket_path);
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options_free(&global_options);
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options_free(&global_window_options);
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@ -996,7 +1004,7 @@ server_second_timers(void)
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/* Update socket execute permissions based on whether sessions are attached. */
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int
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server_update_socket(const char *path)
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server_update_socket()
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{
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struct session *s;
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u_int i;
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@ -1015,9 +1023,9 @@ server_update_socket(const char *path)
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if (n != last) {
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last = n;
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if (n != 0)
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chmod(path, S_IRWXU);
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chmod(socket_path, S_IRWXU);
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else
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chmod(path, S_IRUSR|S_IWUSR);
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chmod(socket_path, S_IRUSR|S_IWUSR);
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}
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return (n);
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85
tmux.c
85
tmux.c
@ -1,4 +1,4 @@
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/* $Id: tmux.c,v 1.109 2009-03-21 12:44:06 nicm Exp $ */
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/* $Id: tmux.c,v 1.110 2009-03-27 15:57:10 nicm Exp $ */
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/*
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* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
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@ -17,6 +17,7 @@
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <errno.h>
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#include <pwd.h>
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@ -58,9 +59,10 @@ time_t server_activity;
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int debug_level;
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int be_quiet;
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time_t start_time;
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const char *socket_path;
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char *socket_path;
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__dead void usage(void);
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char *makesockpath(const char *);
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#ifdef NO_PROGNAME
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const char *__progname = "tmux";
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@ -173,6 +175,34 @@ sigreset(void)
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fatal("sigaction failed");
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}
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char *
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makesockpath(const char *label)
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{
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char base[MAXPATHLEN], *path;
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struct stat sb;
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u_int uid;
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uid = getuid();
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xsnprintf(base, MAXPATHLEN, "%s/%s-%d", _PATH_TMP, __progname, uid);
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if (mkdir(base, S_IRWXU) != 0 && errno != EEXIST)
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return (NULL);
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if (lstat(base, &sb) != 0)
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return (NULL);
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if (!S_ISDIR(sb.st_mode) || sb.st_uid != uid) {
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errno = EACCES;
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return (NULL);
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}
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if ((sb.st_mode & (S_IRWXG|S_IRWXO)) != 0) {
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errno = EACCES;
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return (NULL);
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}
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xasprintf(&path, "%s/%s", base, label);
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return (path);
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}
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int
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main(int argc, char **argv)
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{
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@ -185,13 +215,13 @@ main(int argc, char **argv)
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struct hdr hdr;
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const char *shell;
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struct passwd *pw;
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char *path, *cause, *home, *pass = NULL;
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char rpath[MAXPATHLEN], cwd[MAXPATHLEN];
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char *path, *label, *cause, *home, *pass = NULL;
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char cwd[MAXPATHLEN];
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int retcode, opt, flags, unlock, start_server;
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unlock = flags = 0;
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path = NULL;
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while ((opt = getopt(argc, argv, "28df:qS:uUVv")) != -1) {
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label = path = NULL;
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while ((opt = getopt(argc, argv, "28df:L:qS:uUVv")) != -1) {
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switch (opt) {
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case '2':
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flags |= IDENTIFY_256COLOURS;
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@ -204,7 +234,22 @@ main(int argc, char **argv)
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case 'f':
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cfg_file = xstrdup(optarg);
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break;
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case 'L':
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if (path != NULL) {
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log_warnx("-L and -S cannot be used together");
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exit(1);
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}
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if (label != NULL)
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xfree(label);
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label = xstrdup(optarg);
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break;
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case 'S':
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if (label != NULL) {
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log_warnx("-L and -S cannot be used together");
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exit(1);
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}
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if (path != NULL)
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xfree(path);
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path = xstrdup(optarg);
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break;
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case 'q':
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@ -299,26 +344,13 @@ main(int argc, char **argv)
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}
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}
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if (path == NULL) {
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xasprintf(&path,
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"%s/%s-%lu", _PATH_TMP, __progname, (u_long) getuid());
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if (label == NULL)
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label = xstrdup("default");
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if (path == NULL && (path = makesockpath(label)) == NULL) {
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log_warn("can't create socket");
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exit(1);
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}
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if (realpath(path, rpath) == NULL) {
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if (errno != ENOENT) {
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log_warn("%s", path);
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exit(1);
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}
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/*
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* Linux appears to fill in the buffer fine but then returns
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* ENOENT if the file doesn't exist. But since it returns an
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* error, we can't rely on the buffer. Grr.
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*/
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if (strlcpy(rpath, path, sizeof rpath) >= sizeof rpath) {
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log_warnx("%s: %s", path, strerror(ENAMETOOLONG));
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exit(1);
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}
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}
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xfree(path);
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xfree(label);
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shell = getenv("SHELL");
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if (shell == NULL || *shell == '\0') {
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@ -374,8 +406,9 @@ main(int argc, char **argv)
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}
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memset(&cctx, 0, sizeof cctx);
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if (client_init(rpath, &cctx, start_server, flags) != 0)
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if (client_init(path, &cctx, start_server, flags) != 0)
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exit(1);
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xfree(path);
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b = buffer_create(BUFSIZ);
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if (unlock) {
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4
tmux.h
4
tmux.h
@ -1,4 +1,4 @@
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/* $Id: tmux.h,v 1.280 2009-03-21 12:44:06 nicm Exp $ */
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/* $Id: tmux.h,v 1.281 2009-03-27 15:57:10 nicm Exp $ */
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/*
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* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
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@ -1022,7 +1022,7 @@ extern time_t server_activity;
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extern int debug_level;
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extern int be_quiet;
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extern time_t start_time;
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extern const char *socket_path;
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extern char *socket_path;
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void logfile(const char *);
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void siginit(void);
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void sigreset(void);
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