File Coverage

blib/lib/ParseUtil/Domain.pm

Criterion	Covered	Total	%
statement	146	146	100.0
branch	39	42	92.8
condition	8	9	88.8
subroutine	17	17	100.0
pod	2	2	100.0
total	212	216	98.1

package ParseUtil::Domain;
$ParseUtil::Domain::VERSION = '2.426';
# VERSION

require Exporter;
our @ISA = qw(Exporter);

use Modern::Perl;
use Carp;
use autobox;
use autobox::Core;
use List::MoreUtils qw/any/;
use Net::IDN::Encode ':all';
use Net::IDN::Punycode ':all';
use Net::IDN::Nameprep;
#use Smart::Comments;

use ParseUtil::Domain::ConfigData;
our @EXPORT = qw(parse_domain puny_convert);
our %EXPORT_TAGS = (parse => [qw/parse_domain/], simple => [qw/puny_convert/]);

sub parse_domain  {
    my $name = shift;
    ### testing : $name
    my @name_segments = $name->split(qr{\Q@\E});
    ### namesegments : \@name_segments

    my @segments = $name_segments[-1]->split(qr/[\.\x{FF0E}\x{3002}\x{FF61}]/);
    ### executing with : $name
    my ( $zone, $zone_ace, $domain_segments ) =
      _find_zone( \@segments )->slice(qw/zone zone_ace domain/);

    ### found zone : $zone
    ### found zone_ace : $zone_ace

    my $puny_processed = _punycode_segments( $domain_segments, $zone );
    my ( $domain_name, $name_ace ) = $puny_processed->slice(qw/name name_ace/);
    ### puny processed : $puny_processed
    ### joining name slices : $domain_name
    $puny_processed->{name} = [ $domain_name, $zone ]->join('.')
      if $domain_name;
    $puny_processed->{name_ace} = [ $name_ace, $zone_ace ]->join('.')
      if $name_ace;
    @{$puny_processed}{qw/zone zone_ace/} = ( $zone, $zone_ace );

    # process .name "email" domains
    if ( @name_segments > 1 ) {
        my $punycoded_name = _punycode_segments( [ $name_segments[0] ], $zone );
        my ( $domain, $domain_ace ) =
          $punycoded_name->slice(qw/domain domain_ace/);

        $puny_processed->{domain} =
          [ $domain, $puny_processed->{domain} ]->join('@');
        if ($domain_ace) {
            $puny_processed->{domain_ace} =
              [ $domain_ace, $puny_processed->{domain_ace} ]->join('@');

        }
    }
    return $puny_processed;

}

sub puny_convert {
    my $domain = shift;
    my @keys;
    if ( $domain =~ /\.?xn--/ ) {
        @keys = qw/domain zone/;
    }
    else {
        @keys = qw/domain_ace zone_ace/;
    }
    my $parsed        = parse_domain($domain);
    my $parsed_domain = $parsed->slice(@keys)->join(".");

    return $parsed_domain;
}

sub _find_zone {
    my $domain_segments = shift;

    my $tld_regex = ParseUtil::Domain::ConfigData->tld_regex();
    ### Domain Segments: $domain_segments
    my $tld  = $domain_segments->pop;
    my $sld  = $domain_segments->pop;
    my $thld = $domain_segments->pop;

    my ( $possible_tld, $possible_thld );
    my ( $sld_zone_ace, $tld_zone_ace ) =
      map { domain_to_ascii( nameprep $_) } $sld, $tld;
    my $thld_zone_ace;
    $thld_zone_ace = domain_to_ascii( nameprep $thld) if $thld;
    if ( $tld =~ /^de$/ ) {
        ### is a de domain
        $possible_tld = join "." => $tld, _puny_encode($sld);
    }
    else {
        $possible_tld = join "." => $tld_zone_ace, $sld_zone_ace;
        $possible_thld = join "." => $possible_tld,
          $thld_zone_ace
          if $thld_zone_ace;
    }
    my ( $zone, @zone_params );

    # first checking for third level domain
    if ( $possible_thld and $possible_thld =~ /\A$tld_regex\z/ ) {
        ### $possible_thld: $possible_thld
        my $zone_ace = join "." => $thld_zone_ace, $sld_zone_ace, $tld_zone_ace;
        $zone = join "." => $thld, $sld, $tld;
        push @zone_params, zone_ace => $zone_ace;
    }
    elsif ( $possible_tld =~ /\A$tld_regex\z/ ) {
        ### possible_tld: $possible_tld
        push @{$domain_segments}, $thld;
        my $zone_ace = join "." => $sld_zone_ace, $tld_zone_ace;
        $zone = join "." => $sld, $tld;
        push @zone_params, zone_ace => $zone_ace;
    }
    elsif ( $tld_zone_ace =~ /\A$tld_regex\z/ ) {
        ### tld_zone_ace: $tld_zone_ace
        push @{$domain_segments}, $thld if $thld;
        push @{$domain_segments}, $sld;
        push @zone_params, zone_ace => $tld_zone_ace;
        $zone = $tld;
    }
    croak "Could not find tld." unless $zone;
    my $unicode_zone = domain_to_unicode($zone);
    return {
        zone   => $unicode_zone,
        domain => $domain_segments,
        @zone_params
    };
}

sub _punycode_segments {
    my ( $domain_segments, $zone ) = @_;

    my @name_prefix;
    if ( not $zone or $zone !~ /^(?:de|fr|pm|re|tf|wf|yt)$/ ) {
        my $puny_encoded = [];
        foreach my $segment ( @{$domain_segments} ) {
            croak "Error processing domain."
              . " Please report to package maintainer."
              if not defined $segment
              or $segment eq '';
            my $nameprepped = nameprep( lc $segment );
            my $ascii       = domain_to_ascii($nameprepped);
            push @{$puny_encoded}, $ascii;
        }
        my $puny_decoded =
          [ map { domain_to_unicode($_) } @{$puny_encoded} ];
        croak "Undefined mapping!"
          if any { lc $_ ne nameprep( lc $_ ) } @{$puny_decoded};

        my $domain     = $puny_decoded->join(".");
        my $domain_ace = $puny_encoded->join(".");

        my $processed_name     = _process_name_part($puny_decoded);
        my $processed_name_ace = _process_name_part($puny_encoded);
        @{$processed_name_ace}{qw/name_ace prefix_ace/} =
          delete @{$processed_name_ace}{qw/name prefix/};

        return {
            domain     => $domain,
            domain_ace => $domain_ace,
            %{$processed_name},
            %{$processed_name_ace}
        };
    }

    # Avoid nameprep step for certain tlds
    my $puny_encoded =
      [ map { _puny_encode( lc $_ ) } @{$domain_segments} ];
    my $puny_decoded       = [ map { _puny_decode($_) } @{$puny_encoded} ];
    my $domain             = $puny_decoded->join(".");
    my $domain_ace         = $puny_encoded->join(".");
    my $processed_name     = _process_name_part($puny_decoded);
    my $processed_name_ace = _process_name_part($puny_encoded);
    @{$processed_name_ace}{qw/name_ace prefix_ace/} =
      delete @{$processed_name_ace}{qw/name prefix/};
    return {
        domain     => $domain,
        domain_ace => $domain_ace,
        %{$processed_name},
        %{$processed_name_ace}
    };

}

sub _process_name_part {
    my $processed = shift;
    my @name_prefix;
    my $name   = $processed->pop;
    my $prefix = $processed->join(".");
    push @name_prefix, name   => $name   if $name;
    push @name_prefix, prefix => $prefix if $prefix;
    return {@name_prefix};
}

sub _puny_encode {
    my $unencoded = shift;

    ### encoding : $unencoded
    # quick check to make sure that domain should be decoded
    my $temp_unencoded = nameprep $unencoded;
    ### namepreped : $temp_unencoded
    my $test_encode = domain_to_ascii($temp_unencoded);
    return $unencoded if $test_encode eq $unencoded;
    return "xn--" . encode_punycode($unencoded);
}

sub _puny_decode {
    my $encoded = shift;
    return $encoded
      unless $encoded =~ /xn--/;
    $encoded =~ s/^xn--//;
    ### decoding : $encoded
    my $test_decode = decode_punycode($encoded);
    ### test decode : $test_decode
    return $encoded if $encoded eq $test_decode;
    return decode_punycode($encoded);

}

1;

__END__

=encoding utf8

=head1 NAME

ParseUtil::Domain - Domain parser and puny encoder/decoder.


=for HTML <a href="https://travis-ci.org/heytrav/ParseUtil-Domain"><img src="https://travis-ci.org/heytrav/ParseUtil-Domain.svg?branch=remove-utf8"></a>


=head1 SYNOPSIS

  use ParseUtil::Domain ':parse';

    my $processed = parse_domain("somedomain.com");
    #$processed:
    #{
        #domain => 'somedomain',
        #domain_ace => 'somedomain',
        #zone => 'com',
        #zone_ace => 'com'
    #}


=head1 DESCRIPTION


This purpose of this module is to parse a domain name into its respective name and tld. Note that
the I<tld> may actually refer to a second- or third-level domain, e.g. co.uk or
plc.co.im.  It also provides respective puny encoded and decoded versions of
the parsed domain.

This module uses TLD data from the L<Public Suffix List|http://publicsuffix.org/list/> which is included with this
distribution.


=head1 INTERFACE


=head2 parse_domain


=over 2

=item
parse_domain(string)


=over 3

=item
Examples:


   1. parse_domain('somedomain.com');

    Result:
    {
        domain     => 'somedomain',
        zone       => 'com',
        domain_ace => 'somedomain',
        zone_ace   => 'com'
    }

  2. parse_domain('test.xn--o3cw4h');

    Result:
    {
        domain     => 'test',
        zone       => 'ไทย',
        domain_ace => 'test',
        zone_ace   => 'xn--o3cw4h'
    }

  3. parse_domain('bloß.co.at');

    Result:
    {
        domain     => 'bloss',
        zone       => 'co.at',
        domain_ace => 'bloss',
        zone_ace   => 'co.at'
    }

  4. parse_domain('bloß.de');

    Result:
    {
        domain     => 'bloß',
        zone       => 'de',
        domain_ace => 'xn--blo-7ka',
        zone_ace   => 'de'
    }

  5. parse_domain('www.whatever.com');

   Result:
    {
        domain     => 'www.whatever',
        zone       => 'com',
        domain_ace => 'www.whatever',
        zone_ace   => 'com',
        name       => 'whatever',
        name_ace   => 'whatever',
        prefix     => 'www',
        prefix_ace => 'www'
    }

=back



=back

=head2 puny_convert

Toggles a domain between puny encoded and decoded versions.


   use ParseUtil::Domain ':simple';

   my $result = puny_convert('bloß.de');
   # $result: xn--blo-7ka.de

   my $reverse = puny_convert('xn--blo-7ka.de');
   # $reverse: bloß.de






=head1 DEPENDENCIES

=over 3


=item
L<Net::IDN::Encode>


=item
L<Net::IDN::Punycode>


=item
L<Regexp::Assemble::Compressed>


=item
The L<Public Suffix List|http://publicsuffix.org/list/>.


=back


=head1 CHANGES


=over 3


=item *
Added extra I<prefix> and I<name> fields to output to separate the actual registered part of the domain from subdomains (or things like I<www>).

=item *
Updated with latest version of the public suffix list.

=item *
Added a bunch of new TLDs (nTLDs).



=back

=head1 LICENSE

This software is copyright (c) 2014 by Trav Holton <[e-mail]>.

This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.

Terms of the Perl programming language system itself

a) the GNU General Public License as published by the Free
   Software Foundation; either version 1, or (at your option) any
   later version, or
b) the "Artistic License"

--- The GNU General Public License, Version 1, February 1989 ---

This software is Copyright (c) 2014 by Trav Holton <[e-mail]>.

This is free software, licensed under:

  The GNU General Public License, Version 1, February 1989

                    GNU GENERAL PUBLIC LICENSE
                     Version 1, February 1989

 Copyright (C) 1989 Free Software Foundation, Inc.
 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.

                            Preamble

  The license agreements of most software companies try to keep users
at the mercy of those companies.  By contrast, our General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users.  The
General Public License applies to the Free Software Foundation's
software and to any other program whose authors commit to using it.
You can use it for your programs, too.

  When we speak of free software, we are referring to freedom, not
price.  Specifically, the General Public License is designed to make
sure that you have the freedom to give away or sell copies of free
software, that you receive source code or can get it if you want it,
that you can change the software or use pieces of it in new free
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  To protect your rights, we need to make restrictions that forbid
anyone to deny you these rights or to ask you to surrender the rights.
These restrictions translate to certain responsibilities for you if you
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  For example, if you distribute copies of a such a program, whether
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  We protect your rights with two steps: (1) copyright the software, and
(2) offer you this license which gives you legal permission to copy,
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  Also, for each author's protection and ours, we want to make certain
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  The precise terms and conditions for copying, distribution and
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                    GNU GENERAL PUBLIC LICENSE
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

  0. This License Agreement applies to any program or other work which
contains a notice placed by the copyright holder saying it may be
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Mere aggregation of another independent work with the Program (or its
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                     END OF TERMS AND CONDITIONS

        Appendix: How to Apply These Terms to Your New Programs

  If you develop a new program, and you want it to be of the greatest
possible use to humanity, the best way to achieve this is to make it
free software which everyone can redistribute and change under these
terms.

  To do so, attach the following notices to the program.  It is safest to
attach them to the start of each source file to most effectively convey
the exclusion of warranty; and each file should have at least the
"copyright" line and a pointer to where the full notice is found.

    <one line to give the program's name and a brief idea of what it does.>
    Copyright (C) 19yy  <name of author>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 1, or (at your option)
    any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
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Also add information on how to contact you by electronic and paper mail.

If the program is interactive, make it output a short notice like this
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The hypothetical commands `show w' and `show c' should show the
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c'; they could even be mouse-clicks or menu items--whatever suits your
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You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary.  Here a sample; alter the names:

  Yoyodyne, Inc., hereby disclaims all copyright interest in the
  program `Gnomovision' (a program to direct compilers to make passes
  at assemblers) written by James Hacker.

  <signature of Ty Coon>, 1 April 1989
  Ty Coon, President of Vice

That's all there is to it!


--- The Artistic License 1.0 ---

This software is Copyright (c) 2014 by Trav Holton <[e-mail]>.

This is free software, licensed under:

  The Artistic License 1.0

The Artistic License

Preamble

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from the programs of this Package do not automatically fall under the copyright
of this Package, but belong to whomever generated them, and may be sold
commercially, and may be aggregated with this Package.

7. C or perl subroutines supplied by you and linked into this Package shall not
be considered part of this Package.

8. The name of the Copyright Holder may not be used to endorse or promote
products derived from this software without specific prior written permission.

9. THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.

The End