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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
parent f85208602d
commit 5076beb009
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 static int
input_dcs_dispatch(struct input_ctx *ictx) input_dcs_dispatch(struct input_ctx *ictx)
{ {
struct window_pane *wp = ictx->wp;
struct screen_write_ctx *sctx = &ictx->ctx; struct screen_write_ctx *sctx = &ictx->ctx;
u_char *buf = ictx->input_buf; u_char *buf = ictx->input_buf;
size_t len = ictx->input_len; size_t len = ictx->input_len;
const char prefix[] = "tmux;"; const char prefix[] = "tmux;";
const u_int prefixlen = (sizeof prefix) - 1; const u_int prefixlen = (sizeof prefix) - 1;
if (wp == NULL)
return (0);
if (ictx->flags & INPUT_DISCARD) if (ictx->flags & INPUT_DISCARD)
return (0); return (0);
if (!options_get_number(ictx->wp->options, "allow-passthrough"))
return (0);
log_debug("%s: \"%s\"", __func__, buf); log_debug("%s: \"%s\"", __func__, buf);
if (len >= prefixlen && strncmp(buf, prefix, prefixlen) == 0) if (len >= prefixlen && strncmp(buf, prefix, prefixlen) == 0)

20
options-table.c
View File

@@ -302,7 +302,7 @@ const struct options_table_entry options_table[] = {
.choices = options_table_extended_keys_list, .choices = options_table_extended_keys_list,
.default_num = 0, .default_num = 0,
.text = "Whether to request extended key sequences from terminals " .text = "Whether to request extended key sequences from terminals "
"that support it." "that support it."
}, },
{ .name = "focus-events", { .name = "focus-events",
@@ -801,6 +801,14 @@ const struct options_table_entry options_table[] = {
"linked to ('off')." "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", { .name = "allow-rename",
.type = OPTIONS_TABLE_FLAG, .type = OPTIONS_TABLE_FLAG,
.scope = OPTIONS_TABLE_WINDOW|OPTIONS_TABLE_PANE, .scope = OPTIONS_TABLE_WINDOW|OPTIONS_TABLE_PANE,
@@ -989,7 +997,7 @@ const struct options_table_entry options_table[] = {
.choices = options_table_pane_border_lines_list, .choices = options_table_pane_border_lines_list,
.default_num = PANE_LINES_SINGLE, .default_num = PANE_LINES_SINGLE,
.text = "Type of characters used to draw pane border lines. Some of " .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", { .name = "pane-border-status",
@@ -1041,7 +1049,7 @@ const struct options_table_entry options_table[] = {
.choices = options_table_popup_border_lines_list, .choices = options_table_popup_border_lines_list,
.default_num = BOX_LINES_SINGLE, .default_num = BOX_LINES_SINGLE,
.text = "Type of characters used to draw popup border lines. Some of " .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", { .name = "remain-on-exit",
@@ -1171,7 +1179,7 @@ const struct options_table_entry options_table[] = {
.scope = OPTIONS_TABLE_WINDOW, .scope = OPTIONS_TABLE_WINDOW,
.default_num = 1, .default_num = 1,
.text = "Whether xterm-style function key sequences should be sent. " .text = "Whether xterm-style function key sequences should be sent. "
"This option is no longer used." "This option is no longer used."
}, },
/* Hook options. */ /* Hook options. */
@@ -1219,8 +1227,8 @@ const struct options_table_entry options_table[] = {
OPTIONS_TABLE_HOOK("client-active", ""), OPTIONS_TABLE_HOOK("client-active", ""),
OPTIONS_TABLE_HOOK("client-attached", ""), OPTIONS_TABLE_HOOK("client-attached", ""),
OPTIONS_TABLE_HOOK("client-detached", ""), OPTIONS_TABLE_HOOK("client-detached", ""),
OPTIONS_TABLE_HOOK("client-focus-in", ""), OPTIONS_TABLE_HOOK("client-focus-in", ""),
OPTIONS_TABLE_HOOK("client-focus-out", ""), OPTIONS_TABLE_HOOK("client-focus-out", ""),
OPTIONS_TABLE_HOOK("client-resized", ""), OPTIONS_TABLE_HOOK("client-resized", ""),
OPTIONS_TABLE_HOOK("client-session-changed", ""), OPTIONS_TABLE_HOOK("client-session-changed", ""),
OPTIONS_TABLE_PANE_HOOK("pane-died", ""), OPTIONS_TABLE_PANE_HOOK("pane-died", ""),

7
tmux.1
View File

@@ -4403,6 +4403,13 @@ The default is on.
Available pane options are: Available pane options are:
.Pp .Pp
.Bl -tag -width Ds -compact .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 .It Xo Ic allow-rename
.Op Ic on | off .Op Ic on | off
.Xc .Xc