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Be more strict about what names and titles we allow and reject them

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immediately when possible, but allow # again for those directly set by
commands (but not escape sequences). From Barrett Ruth in GitHub issue
5175.
This commit is contained in:
nicm
2026-06-15 21:41:39 +00:00
parent b86bd1fcd0
commit eb65331403
17 changed files with 144 additions and 81 deletions
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14
screen.c
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@@ -232,11 +232,14 @@ screen_set_cursor_colour(struct screen *s, int colour)
/* Set screen title. */
int
screen_set_title(struct screen *s, const char *title)
screen_set_title(struct screen *s, const char *title, int untrusted)
{
char *new_title;
new_title = clean_name(title, "#");
if (untrusted)
new_title = clean_name(title, "#");
else
new_title = clean_name(title, "");
if (new_title == NULL)
return (0);
free(s->title);
@@ -246,11 +249,14 @@ screen_set_title(struct screen *s, const char *title)
/* Set screen path. */
int
screen_set_path(struct screen *s, const char *path)
screen_set_path(struct screen *s, const char *path, int untrusted)
{
char *new_path;
new_path = clean_name(path, "#");
if (untrusted)
new_path = clean_name(path, "#");
else
new_path = clean_name(path, "");
if (new_path == NULL)
return (0);
free(s->path);