/usr/share/perl5/Net/DNS/Mailbox.pm is in libnet-dns-perl 1.07-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 | package Net::DNS::Mailbox;
#
# $Id: Mailbox.pm 1406 2015-10-05 08:25:49Z willem $
#
use vars qw($VERSION);
$VERSION = (qw$LastChangedRevision: 1406 $)[1];
=head1 NAME
Net::DNS::Mailbox - DNS mailbox representation
=head1 SYNOPSIS
use Net::DNS::Mailbox;
$mailbox = new Net::DNS::Mailbox('user@example.com');
$address = $mailbox->address;
=head1 DESCRIPTION
The Net::DNS::Mailbox module implements a subclass of DNS domain name
objects representing the DNS coded form of RFC822 mailbox address.
=cut
use strict;
use integer;
use Carp;
use base qw(Net::DNS::DomainName);
=head1 METHODS
=head2 new
$mailbox = new Net::DNS::Mailbox('John Doe <john.doe@example.com>');
$mailbox = new Net::DNS::Mailbox('john.doe@example.com');
$mailbox = new Net::DNS::Mailbox('john\.doe.example.com');
Creates a mailbox object representing the RFC822 mail address specified by
the character string argument. An encoded domain name is also accepted for
backward compatibility with Net::DNS 0.68 and earlier.
The argument string consists of printable characters from the 7-bit
ASCII repertoire.
=cut
sub new {
my $class = shift;
local $_ = shift;
croak 'undefined mail address' unless defined $_;
s/^.*<//g; # strip excess on left
s/>.*$//g; # strip excess on right
s/\\\@/\\064/g; # disguise escaped @
s/("[^"]*)\@([^"]*")/$1\\064$2/g; # disguise quoted @
my ( $mbox, @host ) = split /\@/; # split on @ if present
for ( $mbox ||= '' ) {
s/^.*"(.*)".*$/$1/; # strip quotes
s/\\\./\\046/g; # disguise escaped dot
s/\./\\046/g if @host; # escape dots in local part
}
bless __PACKAGE__->SUPER::new( join '.', $mbox, @host ), $class;
}
=head2 address
$address = $mailbox->address;
Returns a character string containing the RFC822 mailbox address
corresponding to the encoded domain name representation described
in RFC1035 section 8.
=cut
sub address {
return unless defined wantarray;
my @label = shift->label;
local $_ = shift(@label) || return '<>';
s/\\\\//g; # delete escaped \
s/\\\d\d\d//g; # delete non-printable
s/\\\./\./g; # unescape dots
s/[\\"]//g; # delete \ "
s/^(.*)$/"$1"/ if /["(),:;<>@\[\\\]]/; # quote local part
return $_ unless scalar(@label);
join '@', $_, join '.', @label;
}
########################################
=head1 DOMAIN NAME COMPRESSION AND CANONICALISATION
The Net::DNS::Mailbox1035 and Net::DNS::Mailbox2535 subclass
packages implement RFC1035 domain name compression and RFC2535
canonicalisation.
=cut
package Net::DNS::Mailbox1035;
use base qw(Net::DNS::Mailbox);
sub encode { &Net::DNS::DomainName1035::encode; }
package Net::DNS::Mailbox2535;
use base qw(Net::DNS::Mailbox);
sub encode { &Net::DNS::DomainName2535::encode; }
1;
__END__
########################################
=head1 COPYRIGHT
Copyright (c)2009,2012 Dick Franks.
All rights reserved.
=head1 LICENSE
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted, provided
that the above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear in supporting
documentation, and that the name of the author not be used in advertising
or publicity pertaining to distribution of the software without specific
prior written permission.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
=head1 SEE ALSO
L<perl>, L<Net::DNS>, L<Net::DNS::DomainName>, RFC1035, RFC5322 (RFC822)
=cut
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