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term: set_app_id() + set_window_title(): only allow printable characters

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Daniel Eklöf 2024-12-17 11:01:17 +01:00
parent 9a1b59adae
commit d523e7a676
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4 changed files with 19 additions and 6 deletions
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17
misc.c
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@ -44,8 +44,19 @@ timespec_sub(const struct timespec *a, const struct timespec *b,
}
bool
is_valid_utf8(const char *value)
is_valid_utf8_and_printable(const char *value)
{
return value != NULL &&
mbsntoc32(NULL, value, strlen(value), 0) != (size_t)-1;
char32_t *wide = ambstoc32(value);
if (wide == NULL)
return false;
for (const char32_t *c = wide; *c != U'\0'; c++) {
if (!isc32print(*c)) {
free(wide);
return false;
}
}
free(wide);
return true;
}