refactor: normalize range checks into one clear path

This commit is contained in:
2025-12-29 15:34:33 +01:00
parent 7005e0852a
commit b203bcad78

View File

@@ -95,23 +95,32 @@ sub _is_private_ipv4 {
sub _is_private_ipv6 {
my ( $self, $ip ) = @_;
return 0 unless defined $ip;
$ip = lc($ip);
$ip =~ s/^\[|\]$//g;
return 1 if $ip eq '::1';
return 1 if $ip eq '::';
return 1
if $ip =~ /^::ffff:(127\.|192\.168\.|10\.|172\.(1[6-9]|2[0-9]|3[01])\.)/;
if ( $ip =~ /^([0-9a-f]{0,4}:)+[0-9a-f]{0,4}$/ || $ip =~ /^::/ ) {
if ( $ip =~ /^::ffff:(.+)$/ ) {
return $self->_is_private_ipv4($1) ? 1 : 0;
}
return 0 unless $ip =~ /^([0-9a-f]{0,4}:)+[0-9a-f]{0,4}$/ || $ip =~ /^::/;
my @parts = split /:/, $ip;
my $first_part = $parts[0] || '';
return 0 unless @parts > 0;
my $first_part = $parts[0] || '';
return 0 unless length($first_part) > 0;
if ( length($first_part) > 0 ) {
my $first = hex($first_part);
if ( $first >= 0xfc && $first <= 0xfd ) {
return 1;
}
if ( $first == 0xfe && @parts > 1 ) {
my $second_part = $parts[1] || '';
if ( length($second_part) > 0 ) {
@@ -121,15 +130,6 @@ sub _is_private_ipv6 {
}
}
}
}
if ( $ip =~ /^fc[0-9a-f]{2}:/i || $ip =~ /^fd[0-9a-f]{2}:/i ) {
return 1;
}
if ( $ip =~ /^fe[89ab][0-9a-f]:/i ) {
return 1;
}
}
return 0;
}