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commit 3ca64932363a6562cf961ea5ed3d506f476da6ba
Author: [email protected] <[email protected]>
AuthorDate: Sun Mar 29 21:24:19 2026 -0600
feat: add per-terminal tytab freeze latch
Security layer 2: new escape sequence \033}tf\0 permanently disables
tytab in the current terminal. Programs rendering untrusted content
can call 'tytab freeze' to immunize themselves. Bypasses config check
so it works even when tytab is disabled.
Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>
---
src/bin/tytab.c | 11 ++++++++++-
src/bin/win.c | 9 +++++++++
2 files changed, 19 insertions(+), 1 deletion(-)
diff --git a/src/bin/tytab.c b/src/bin/tytab.c
index a9365c3e..0155e91f 100644
--- a/src/bin/tytab.c
+++ b/src/bin/tytab.c
@@ -9,12 +9,14 @@ print_usage(const char *argv0)
{
printf("Usage: %s " HELP_ARGUMENT_SHORT " name [NAME]\n"
" %s " HELP_ARGUMENT_SHORT " new [NAME DIR] [-- CMD...]\n"
+ " %s " HELP_ARGUMENT_SHORT " freeze\n"
"\n"
" Manage tabs and splits in Terminology.\n"
"\n"
" Commands:\n"
" name [NAME] Set panel name (omit NAME to clear)\n"
" new [NAME DIR] [-- CMD] Create a new tab\n"
+ " freeze Permanently disable tytab in this terminal\n"
"\n"
" NAME Target panel name\n"
" DIR Split direction: left, right, top, bottom (or l, r, t, b)\n"
@@ -22,7 +24,7 @@ print_usage(const char *argv0)
"\n"
HELP_ARGUMENT_DOC "\n"
"\n",
- argv0, argv0);
+ argv0, argv0, argv0);
}
static char
@@ -98,6 +100,13 @@ main(int argc, char **argv)
if (ty_write(1, tbuf, strlen(tbuf) + 1) != (signed)(strlen(tbuf) + 1))
perror("write");
}
+ else if (!strcmp(argv[1], "freeze"))
+ {
+ /* tytab freeze */
+ snprintf(tbuf, sizeof(tbuf), "%c}tf", 0x1b);
+ if (ty_write(1, tbuf, strlen(tbuf) + 1) != (signed)(strlen(tbuf) + 1))
+ perror("write");
+ }
else if (!strcmp(argv[1], "new"))
{
/* tytab new [NAME DIR] [-- CMD...] */
diff --git a/src/bin/win.c b/src/bin/win.c
index 97004dad..9b7d50ab 100644
--- a/src/bin/win.c
+++ b/src/bin/win.c
@@ -141,6 +141,7 @@ struct tag_Term
int x, y;
} down;
double last_keypress_time; /* for anti-bombing, updated on key-down */
+ Eina_Bool tytab_frozen; /* one-way latch: once set, tytab disabled forever */
int refcnt;
unsigned char hold : 1;
unsigned char unswallowed : 1;
@@ -6660,9 +6661,17 @@ _cb_command(void *data,
}
else if (cmd[0] == 't') // tab/split escape commands
{
+ if (cmd[1] == 'f') // freeze: always accepted, bypasses config
+ {
+ term->tytab_frozen = EINA_TRUE;
+ return;
+ }
+
Config *config_tc = termio_config_get(term->termio);
if (!config_tc || !config_tc->tytab)
return;
+ if (term->tytab_frozen)
+ return;
if (cmd[1] == 'n') // name panel: tn;NAME
{
--
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