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# Copyrights 1995-2017 by [Mark Overmeer <perl@overmeer.net>].
# For other contributors see ChangeLog.
# See the manual pages for details on the licensing terms.
# Pod stripped from pm file by OODoc 2.02.
package Mail::Util;
use vars '$VERSION';
$VERSION = '2.19';
use base 'Exporter';
use strict;
use Carp;
our @EXPORT_OK = qw(read_mbox maildomain mailaddress);
sub Version { our $VERSION }
my ($domain, $mailaddress);
my @sendmailcf = qw(/etc /etc/sendmail /etc/ucblib
/etc/mail /usr/lib /var/adm/sendmail);
sub read_mbox($)
{ my $file = shift;
local *FH;
open FH,'<', $file
or croak "cannot open '$file': $!\n";
local $_;
my @mbox;
my $mail = [];
my $blank = 1;
while(<FH>)
{ if($blank && /^From .*\d{4}/)
{ push @mbox, $mail if @$mail;
$mail = [ $_ ];
$blank = 0;
}
else
{ $blank = m/^$/ ? 1 : 0;
push @$mail, $_;
}
}
push @mbox, $mail if @$mail;
close FH;
wantarray ? @mbox : \@mbox;
}
sub maildomain()
{ return $domain
if defined $domain;
$domain = $ENV{MAILDOMAIN}
and return $domain;
# Try sendmail configuration file
my $config = (grep -r, map {"$_/sendmail.cf"} @sendmailcf)[0];
local *CF;
local $_;
if(defined $config && open CF, '<', $config)
{ my %var;
while(<CF>)
{ if(my ($v, $arg) = /^D([a-zA-Z])([\w.\$\-]+)/)
{ $arg =~ s/\$([a-zA-Z])/exists $var{$1} ? $var{$1} : '$'.$1/eg;
$var{$v} = $arg;
}
}
close CF;
$domain = $var{j} if defined $var{j};
$domain = $var{M} if defined $var{M};
$domain = $1
if $domain && $domain =~ m/([A-Za-z0-9](?:[\.\-A-Za-z0-9]+))/;
return $domain
if defined $domain && $domain !~ /\$/;
}
# Try smail config file if exists
if(open CF, '<', "/usr/lib/smail/config")
{ while(<CF>)
{ if( /\A\s*hostnames?\s*=\s*(\S+)/ )
{ $domain = (split /\:/,$1)[0];
last;
}
}
close CF;
return $domain
if defined $domain;
}
# Try a SMTP connection to 'mailhost'
if(eval {require Net::SMTP})
{ foreach my $host (qw(mailhost localhost))
{ # hosts are local, so short timeout
my $smtp = eval { Net::SMTP->new($host, Timeout => 5) };
if(defined $smtp)
{ $domain = $smtp->domain;
$smtp->quit;
last;
}
}
}
# Use internet(DNS) domain name, if it can be found
$domain = Net::Domain::domainname()
if !defined $domain && eval {require Net::Domain};
$domain ||= "localhost";
}
sub mailaddress(;$)
{ $mailaddress = shift if @_;
return $mailaddress
if defined $mailaddress;
# Get user name from environment
$mailaddress = $ENV{MAILADDRESS};
unless($mailaddress || $^O ne 'MacOS')
{ require Mac::InternetConfig;
no strict;
Mac::InternetConfig->import;
$mailaddress = $InternetConfig{kICEmail()};
}
$mailaddress ||= $ENV{USER} || $ENV{LOGNAME} || eval {getpwuid $>}
|| "postmaster";
# Add domain if it does not exist
$mailaddress .= '@' . maildomain
if $mailaddress !~ /\@/;
$mailaddress =~ s/(^.*<|>.*$)//g;
$mailaddress;
}
1;
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