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Add an option (default off) to control the passthrough escape sequence.

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Like set-clipboard and allow-rename it is safer to forbid this by
default.
This commit is contained in:
nicm 2022-02-15 13:11:29 +00:00 committed by Nicholas Marriott
parent 190b88fcab
commit eabbc80b75
3 changed files with 26 additions and 7 deletions
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6
input.c
View File

@ -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)

20
options-table.c
View File

@ -301,7 +301,7 @@ const struct options_table_entry options_table[] = {
.choices = options_table_extended_keys_list,
.default_num = 0,
.text = "Whether to request extended key sequences from terminals "
"that support it."
"that support it."
},
{ .name = "focus-events",
@ -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,
@ -988,7 +996,7 @@ const struct options_table_entry options_table[] = {
.choices = options_table_pane_border_lines_list,
.default_num = PANE_LINES_SINGLE,
.text = "Type of characters used to draw pane border lines. Some of "
"these are only supported on terminals with UTF-8 support."
"these are only supported on terminals with UTF-8 support."
},
{ .name = "pane-border-status",
@ -1040,7 +1048,7 @@ const struct options_table_entry options_table[] = {
.choices = options_table_popup_border_lines_list,
.default_num = BOX_LINES_SINGLE,
.text = "Type of characters used to draw popup border lines. Some of "
"these are only supported on terminals with UTF-8 support."
"these are only supported on terminals with UTF-8 support."
},
{ .name = "remain-on-exit",
@ -1170,7 +1178,7 @@ const struct options_table_entry options_table[] = {
.scope = OPTIONS_TABLE_WINDOW,
.default_num = 1,
.text = "Whether xterm-style function key sequences should be sent. "
"This option is no longer used."
"This option is no longer used."
},
/* Hook options. */
@ -1218,8 +1226,8 @@ const struct options_table_entry options_table[] = {
OPTIONS_TABLE_HOOK("client-active", ""),
OPTIONS_TABLE_HOOK("client-attached", ""),
OPTIONS_TABLE_HOOK("client-detached", ""),
OPTIONS_TABLE_HOOK("client-focus-in", ""),
OPTIONS_TABLE_HOOK("client-focus-out", ""),
OPTIONS_TABLE_HOOK("client-focus-in", ""),
OPTIONS_TABLE_HOOK("client-focus-out", ""),
OPTIONS_TABLE_HOOK("client-resized", ""),
OPTIONS_TABLE_HOOK("client-session-changed", ""),
OPTIONS_TABLE_PANE_HOOK("pane-died", ""),

7
tmux.1
View File

@ -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