On Wed, Dec 4, 2013 at 2:43 PM, Krzesimir Nowak <[email protected]> wrote:
> Users of validate_* passing "0" might get failures on correct name
> because of coercion of "0" to false in code like:
> die_error(500, "invalid ref") unless (check_ref_format ("0"));
I would say that the problem was that validate_sth() subroutines returned
value of parameter if it was valid, which could be a problem if said value is
false-ish (e.g. validate_refname("0"), or validate_pathname("0")).
Returning undef on invalid data newer was a problem, using 'return $input;'
on valid input was, especially that validate_sth() functions were ever used
in a conditional:
if (!validate_sth($param)) {
die_error(...)
}
While at it validate_sth() is not a best name for boolean predicate:
is_valid_sth() would be better, I think.
> Signed-off-by: Krzesimir Nowak <[email protected]>
> ---
> gitweb/gitweb.perl | 45 +++++++++++++++++++++++++--------------------
> 1 file changed, 25 insertions(+), 20 deletions(-)
>
> diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
> index 67415b9..3434602 100755
> --- a/gitweb/gitweb.perl
> +++ b/gitweb/gitweb.perl
> @@ -1419,63 +1419,68 @@ sub href {
> ## validation, quoting/unquoting and escaping
>
> sub validate_action {
> - my $input = shift || return undef;
> - return undef unless exists $actions{$input};
> - return $input;
> + my $input = shift;
> +
> + return 0 unless defined $input;
> + return 0 unless exists $actions{$input};
> + return 1;
> }
The only change that needs to be doe is replacing
return $input;
with
return 1;
--
Jakub Narebski
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