/* Provenance: openssl/openssl hash_dir (fixed).
 * repo: openssl/openssl
 * commit: 2c9c35870601b4a44d86ddbf512b38df38285cfa
 * parent: abebcec7b1a30fbb1fd5c5cbbe8817690c139163
 * commit_url: https://github.com/openssl/openssl/commit/2c9c35870601b4a44d86ddbf512b38df38285cfa
 * cve: CVE-2022-2068
 * license: Apache-2.0
 * function: hash_dir
 * relpath: tools/c_rehash.in
 */

sub hash_dir {
    my $dir = shift;
    my %hashlist;

    print "Doing $dir\n";

    if (!chdir $dir) {
        print STDERR "WARNING: Cannot chdir to '$dir', $!\n";
        return;
    }

    opendir(DIR, ".") || print STDERR "WARNING: Cannot opendir '.', $!\n";
    my @flist = sort readdir(DIR);
    closedir DIR;
    if ( $removelinks ) {
        # Delete any existing symbolic links
        foreach (grep {/^[\da-f]+\.r{0,1}\d+$/} @flist) {
            if (-l $_) {
                print "unlink $_\n" if $verbose;
                unlink $_ || warn "Can't unlink $_, $!\n";
            }
        }
    }
    FILE: foreach $fname (grep {/\.(pem)|(crt)|(cer)|(crl)$/} @flist) {
        # Check to see if certificates and/or CRLs present.
        my ($cert, $crl) = check_file($fname);
        if (!$cert && !$crl) {
            print STDERR "WARNING: $fname does not contain a certificate or CRL: skipping\n";
            next;
        }
        link_hash_cert($fname) if ($cert);
        link_hash_crl($fname) if ($crl);
    }

    chdir $pwd;
}