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POP3.pm
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# Net::POP3.pm
#
# Copyright (c) 1995-1997 Graham Barr <gbarr@ti.com>. All rights reserved.
# This program is free software; you can redistribute it and/or
# modify it under the same terms as Perl itself.
package Net::POP3;
use strict;
use IO::Socket;
use vars qw(@ISA $VERSION $debug);
use Net::Cmd;
use Carp;
use Net::Config;
$VERSION = do { my @r=(q$Revision: 1.1 $=~/\d+/g); sprintf "%d."."%02d"x$#r,@r};
@ISA = qw(Net::Cmd IO::Socket::INET);
sub new
{
my $self = shift;
my $type = ref($self) || $self;
my $host = shift if @_ % 2;
my %arg = @_;
my $hosts = defined $host ? [ $host ] : $NetConfig{pop3_hosts};
my $obj;
my $h;
foreach $h (@{$hosts})
{
$obj = $type->SUPER::new(PeerAddr => ($host = $h),
PeerPort => $arg{Port} || 'pop3(110)',
Proto => 'tcp',
Timeout => defined $arg{Timeout}
? $arg{Timeout}
: 120
) and last;
}
return undef
unless defined $obj;
${*$obj}{'net_pop3_host'} = $host;
$obj->autoflush(1);
$obj->debug(exists $arg{Debug} ? $arg{Debug} : undef);
unless ($obj->response() == CMD_OK)
{
$obj->close();
return undef;
}
$obj;
}
##
## We don't want people sending me their passwords when they report problems
## now do we :-)
##
sub debug_text { $_[2] =~ /^(pass|rpop)/i ? "$1 ....\n" : $_[2]; }
sub login
{
@_ >= 1 && @_ <= 3 or croak 'usage: $pop3->login( USER, PASS )';
my($me,$user,$pass) = @_;
if(@_ <= 2)
{
require Net::Netrc;
$user ||= (getpwuid($>))[0];
my $m = Net::Netrc->lookup(${*$me}{'net_pop3_host'},$user);
$m ||= Net::Netrc->lookup(${*$me}{'net_pop3_host'});
$pass = $m ? $m->password || ""
: "";
}
$me->user($user) and
$me->pass($pass);
}
sub user
{
@_ == 2 or croak 'usage: $pop3->user( USER )';
$_[0]->_USER($_[1]);
}
sub pass
{
@_ == 2 or croak 'usage: $pop3->pass( PASS )';
my($me,$pass) = @_;
return undef
unless($me->_PASS($pass));
$me->message =~ /(\d+)\s+message/io;
${*$me}{'net_pop3_count'} = $1 || 0;
}
sub reset
{
@_ == 1 or croak 'usage: $obj->reset()';
my $me = shift;
return 0
unless($me->_RSET);
if(defined ${*$me}{'net_pop3_mail'})
{
local $_;
foreach (@{${*$me}{'net_pop3_mail'}})
{
delete $_->{'net_pop3_deleted'};
}
}
}
sub last
{
@_ == 1 or croak 'usage: $obj->last()';
return undef
unless $_[0]->_LAST && $_[0]->message =~ /(\d+)/;
return $1;
}
sub top
{
@_ == 2 || @_ == 3 or croak 'usage: $pop3->top( MSGNUM [, NUMLINES ])';
my $me = shift;
return undef
unless $me->_TOP($_[0], $_[1] || 0);
$me->read_until_dot;
}
sub popstat
{
@_ == 1 or croak 'usage: $pop3->popstat()';
my $me = shift;
return ()
unless $me->_STAT && $me->message =~ /(\d+)\D+(\d+)/;
($1 || 0, $2 || 0);
}
sub list
{
@_ == 1 || @_ == 2 or croak 'usage: $pop3->list( [ MSGNUM ] )';
my $me = shift;
return undef
unless $me->_LIST(@_);
if(@_)
{
$me->message =~ /\d+\D+(\d+)/;
return $1 || undef;
}
my $info = $me->read_until_dot;
my %hash = ();
map { /(\d+)\D+(\d+)/; $hash{$1} = $2; } @$info;
return \%hash;
}
sub get
{
@_ == 2 or croak 'usage: $pop3->get( MSGNUM )';
my $me = shift;
return undef
unless $me->_RETR(@_);
$me->read_until_dot;
}
sub delete
{
@_ == 2 or croak 'usage: $pop3->delete( MSGNUM )';
$_[0]->_DELE($_[1]);
}
sub _USER { shift->command('USER',$_[0])->response() == CMD_OK }
sub _PASS { shift->command('PASS',$_[0])->response() == CMD_OK }
sub _RPOP { shift->command('RPOP',$_[0])->response() == CMD_OK }
sub _RETR { shift->command('RETR',$_[0])->response() == CMD_OK }
sub _DELE { shift->command('DELE',$_[0])->response() == CMD_OK }
sub _TOP { shift->command('TOP', @_)->response() == CMD_OK }
sub _LIST { shift->command('LIST',@_)->response() == CMD_OK }
sub _NOOP { shift->command('NOOP')->response() == CMD_OK }
sub _RSET { shift->command('RSET')->response() == CMD_OK }
sub _LAST { shift->command('LAST')->response() == CMD_OK }
sub _QUIT { shift->command('QUIT')->response() == CMD_OK }
sub _STAT { shift->command('STAT')->response() == CMD_OK }
sub close
{
my $me = shift;
return 1
unless (ref($me) && defined fileno($me));
$me->_QUIT && $me->SUPER::close;
}
sub quit { shift->close }
sub DESTROY
{
my $me = shift;
if(fileno($me))
{
$me->reset;
$me->quit;
}
}
##
## POP3 has weird responses, so we emulate them to look the same :-)
##
sub response
{
my $cmd = shift;
my $str = $cmd->getline() || return undef;
my $code = "500";
$cmd->debug_print(0,$str)
if ($cmd->debug);
if($str =~ s/^\+OK\s+//io)
{
$code = "200"
}
else
{
$str =~ s/^\+ERR\s+//io;
}
${*$cmd}{'net_cmd_resp'} = [ $str ];
${*$cmd}{'net_cmd_code'} = $code;
substr($code,0,1);
}
1;
__END__
=head1 NAME
Net::POP3 - Post Office Protocol 3 Client class (RFC1081)
=head1 SYNOPSIS
use Net::POP3;
# Constructors
$pop = Net::POP3->new('pop3host');
$pop = Net::POP3->new('pop3host', Timeout => 60);
=head1 DESCRIPTION
This module implements a client interface to the POP3 protocol, enabling
a perl5 application to talk to POP3 servers. This documentation assumes
that you are familiar with the POP3 protocol described in RFC1081.
A new Net::POP3 object must be created with the I<new> method. Once
this has been done, all POP3 commands are accessed via method calls
on the object.
=head1 EXAMPLES
Need some small examples in here :-)
=head1 CONSTRUCTOR
=over 4
=item new ( [ HOST, ] [ OPTIONS ] )
This is the constructor for a new Net::POP3 object. C<HOST> is the
name of the remote host to which a POP3 connection is required.
If C<HOST> is not given, then the C<POP3_Host> specified in C<Net::Config>
will be used.
C<OPTIONS> are passed in a hash like fashion, using key and value pairs.
Possible options are:
B<Timeout> - Maximum time, in seconds, to wait for a response from the
POP3 server (default: 120)
B<Debug> - Enable debugging information
=back
=head1 METHODS
Unless otherwise stated all methods return either a I<true> or I<false>
value, with I<true> meaning that the operation was a success. When a method
states that it returns a value, failure will be returned as I<undef> or an
empty list.
=over 4
=item user ( USER )
Send the USER command.
=item pass ( PASS )
Send the PASS command. Returns the number of messages in the mailbox.
=item login ( [ USER [, PASS ]] )
Send both the the USER and PASS commands. If C<PASS> is not given the
C<Net::POP3> uses C<Net::Netrc> to lookup the password using the host
and username. If the username is not specified then the current user name
will be used.
Returns the number of messages in the mailbox.
=item top ( MSGNUM [, NUMLINES ] )
Get the header and the first C<NUMLINES> of the body for the message
C<MSGNUM>. Returns a reference to an array which contains the lines of text
read from the server.
=item list ( [ MSGNUM ] )
If called with an argument the C<list> returns the size of the message
in octets.
If called without arguments a reference to a hash is returned. The
keys will be the C<MSGNUM>'s of all undeleted messages and the values will
be their size in octets.
=item get ( MSGNUM )
Get the message C<MSGNUM> from the remote mailbox. Returns a reference to an
array which contains the lines of text read from the server.
=item last ()
Returns the highest C<MSGNUM> of all the messages accessed.
=item popstat ()
Returns an array of two elements. These are the number of undeleted
elements and the size of the mbox in octets.
=item delete ( MSGNUM )
Mark message C<MSGNUM> to be deleted from the remote mailbox. All messages
that are marked to be deleted will be removed from the remote mailbox
when the server connection closed.
=item reset ()
Reset the status of the remote POP3 server. This includes reseting the
status of all messages to not be deleted.
=item quit ()
Quit and close the connection to the remote POP3 server. Any messages marked
as deleted will be deleted from the remote mailbox.
=back
=head1 NOTES
If a C<Net::POP3> object goes out of scope before C<quit> method is called
then the C<reset> method will called before the connection is closed. This
means that any messages marked to be deleted will not be.
=head1 SEE ALSO
L<Net::Netrc>
L<Net::Cmd>
=head1 AUTHOR
Graham Barr <gbarr@ti.com>
=head1 COPYRIGHT
Copyright (c) 1995-1997 Graham Barr. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=cut