[PATCH] run-parts: permit dot in file name

[tito]

On Thu, 13 May 2021 11:01:09 +0200
Ján Sáreník <jajomojo at gmail.com> wrote:

> See
> https://gist.github.com/andyshinn/3ae01fa13cb64c9d36e7#gistcomment-2044506
> --- debianutils/run_parts.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/debianutils/run_parts.c b/debianutils/run_parts.c
> index 585a4b58f..d2a7f4a08 100644
> --- a/debianutils/run_parts.c
> +++ b/debianutils/run_parts.c
> @@ -119,7 +119,7 @@ static bool invalid_name(const char *c)
>  {
>         c = bb_basename(c);
> 
> -       while (*c && (isalnum(*c) || *c == '_' || *c == '-'))
> +     while (*c && (isalnum(*c) || *c == '_' || *c == '-' || *c =='.'))
>                  c++;
> 
>         return *c; /* TRUE (!0) if terminating NUL is not reached */
> --
> 2.25.1

Hi,
at a first glance it seems to me that with this patch also hidden files
(files starting with a dot) are valid names and I suspect this is not acceptable.
Maybe something like:

p = c  =  bb_basename(c);

while (*c && (isalnum(*c) || *c == '_' || *c == '-' || (*c =='.' && c != p)))
                  c++;

or 

 c  =  bb_basename(c);
 
if ( *c == '.  ')
	return *c:

Both untested.

Ciao,
Tito