Merge branch 'obsd-master' into master

cmd-refresh-client.c

@@ -225,7 +225,7 @@ cmd_refresh_client_exec(struct cmd *self, struct cmdq_item *item)
 	}
 
 	if (args_has(args, 'l')) {
-		tty_putcode_ptr2(&tc->tty, TTYC_MS, "", "?");
+		tty_send_osc52_query(&tc->tty);
 		return (CMD_RETURN_NORMAL);
 	}
 

input.c

@@ -2235,15 +2235,19 @@ input_enter_dcs(struct input_ctx *ictx)
 static int
 input_dcs_dispatch(struct input_ctx *ictx)
 {
+	struct window_pane	*wp = ictx->wp;
 	struct screen_write_ctx	*sctx = &ictx->ctx;
 	u_char			*buf = ictx->input_buf;
 	size_t			 len = ictx->input_len;
 	const char		 prefix[] = "tmux;";
 	const u_int		 prefixlen = (sizeof prefix) - 1;
 
+	if (wp == NULL)
+		return (0);
 	if (ictx->flags & INPUT_DISCARD)
 		return (0);
-
+	if (!options_get_number(ictx->wp->options, "allow-passthrough"))
+		return (0);
 	log_debug("%s: \"%s\"", __func__, buf);
 
 	if (len >= prefixlen && strncmp(buf, prefix, prefixlen) == 0)

options-table.c

@@ -800,6 +800,14 @@ const struct options_table_entry options_table[] = {
 		  "linked to ('off')."
 	},
 
+	{ .name = "allow-passthrough",
+	  .type = OPTIONS_TABLE_FLAG,
+	  .scope = OPTIONS_TABLE_WINDOW|OPTIONS_TABLE_PANE,
+	  .default_num = 0,
+	  .text = "Whether applications are allowed to use the escape sequence "
+	          "to bypass tmux."
+	},
+
 	{ .name = "allow-rename",
 	  .type = OPTIONS_TABLE_FLAG,
 	  .scope = OPTIONS_TABLE_WINDOW|OPTIONS_TABLE_PANE,

tmux.1

@@ -4406,6 +4406,13 @@ The default is on.
 Available pane options are:
 .Pp
 .Bl -tag -width Ds -compact
+.It Xo Ic allow-passthrough
+.Op Ic on | off
+.Xc
+Allow programs in the pane to bypass
+.Nm
+using a terminal escape sequence (\eePtmux;...\ee\e\e).
+.Pp
 .It Xo Ic allow-rename
 .Op Ic on | off
 .Xc

tmux.h

@@ -1278,6 +1278,7 @@ LIST_HEAD(tty_terms, tty_term);
 struct tty {
 	struct client	*client;
 	struct event	 start_timer;
+	struct event	 query_timer;
 
 	u_int		 sx;
 	u_int		 sy;
@@ -1321,7 +1322,7 @@ struct tty {
 #define TTY_NOBLOCK 0x8
 #define TTY_STARTED 0x10
 #define TTY_OPENED 0x20
-/* 0x40 unused */
+#define TTY_OSC52QUERY 0x40
 #define TTY_BLOCK 0x80
 #define TTY_HAVEDA 0x100
 #define TTY_HAVEXDA 0x200
@@ -2174,6 +2175,7 @@ void	tty_reset(struct tty *);
 void	tty_region_off(struct tty *);
 void	tty_margin_off(struct tty *);
 void	tty_cursor(struct tty *, u_int, u_int);
+void	tty_send_osc52_query(struct tty *);
 void	tty_putcode(struct tty *, enum tty_code_code);
 void	tty_putcode1(struct tty *, enum tty_code_code, int);
 void	tty_putcode2(struct tty *, enum tty_code_code, int, int);

tty-keys.c

@@ -1217,6 +1217,11 @@ tty_keys_clipboard(__unused struct tty *tty, const char *buf, size_t len,
 	buf++;
 	end--;
 
+	/* If we did not request this, ignore it. */
+	if (~tty->flags & TTY_OSC52QUERY)
+		return (0);
+	tty->flags &= ~TTY_OSC52QUERY;
+
 	/* It has to be a string so copy it. */
 	copy = xmalloc(end + 1);
 	memcpy(copy, buf, end);

tty.c

@@ -83,6 +83,8 @@ static void	tty_check_overlay_range(struct tty *, u_int, u_int, u_int,
 #define TTY_BLOCK_START(tty) (1 + ((tty)->sx * (tty)->sy) * 8)
 #define TTY_BLOCK_STOP(tty) (1 + ((tty)->sx * (tty)->sy) / 8)
 
+#define TTY_QUERY_TIMEOUT 5
+
 void
 tty_create_log(void)
 {
@@ -307,7 +309,7 @@ tty_start_tty(struct tty *tty)
 {
 	struct client	*c = tty->client;
 	struct termios	 tio;
-	struct timeval	 tv = { .tv_sec = 3 };
+	struct timeval	 tv = { .tv_sec = TTY_QUERY_TIMEOUT };
 
 	setblocking(c->fd, 0);
 	event_add(&tty->event_in, NULL);
@@ -2917,3 +2919,26 @@ tty_default_attributes(struct tty *tty, const struct grid_cell *defaults,
 	gc.bg = bg;
 	tty_attributes(tty, &gc, defaults, palette);
 }
+
+static void
+tty_query_timer_callback(__unused int fd, __unused short events, void *data)
+{
+	struct tty	*tty = data;
+
+	tty->flags &= ~TTY_OSC52QUERY;
+}
+
+void
+tty_send_osc52_query(struct tty *tty)
+{
+	struct timeval	 tv = { .tv_sec = TTY_QUERY_TIMEOUT };
+
+	if ((~tty->flags & TTY_STARTED) || (tty->flags & TTY_OSC52QUERY))
+		return;
+	tty_putcode_ptr2(tty, TTYC_MS, "", "?");
+	tty->flags |= TTY_OSC52QUERY;
+
+	evtimer_set(&tty->query_timer, tty_query_timer_callback, tty);
+	evtimer_add(&tty->query_timer, &tv);
+}
+