# Net::POP3.pm## Copyright (c) 1995-1997 Graham Barr <gbarr@pobox.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 = "2.24"; # $Id: //depot/libnet/Net/POP3.pm#24 $@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 @localport = exists $arg{ResvPort} ? ( LocalPort => $arg{ResvPort} ): (); my $h; foreach $h (@{$hosts}) { $obj = $type->SUPER::new(PeerAddr => ($host = $h), PeerPort => $arg{Port} || 'pop3(110)', Proto => 'tcp', @localport, 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}{'net_pop3_banner'} = $obj->message; $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) { ($user, $pass) = $me->_lookup_credentials($user); } $me->user($user) and $me->pass($pass);}sub apop{ @_ >= 1 && @_ <= 3 or croak 'usage: $pop3->apop( USER, PASS )'; my($me,$user,$pass) = @_; my $banner; my $md; if (eval { local $SIG{__DIE__}; require Digest::MD5 }) { $md = Digest::MD5->new(); } elsif (eval { local $SIG{__DIE__}; require MD5 }) { $md = MD5->new(); } else { carp "You need to install Digest::MD5 or MD5 to use the APOP command"; return undef; } return undef unless ( $banner = (${*$me}{'net_pop3_banner'} =~ /(<.*>)/)[0] ); if (@_ <= 2) { ($user, $pass) = $me->_lookup_credentials($user); } $md->add($banner,$pass); return undef unless($me->_APOP($user,$md->hexdigest)); $me->_get_mailbox_count();}sub user{ @_ == 2 or croak 'usage: $pop3->user( USER )'; $_[0]->_USER($_[1]) ? 1 : undef;}sub pass{ @_ == 2 or croak 'usage: $pop3->pass( PASS )'; my($me,$pass) = @_; return undef unless($me->_PASS($pass)); $me->_get_mailbox_count();}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 = $me->read_until_dot or return undef; my %hash = map { (/(\d+)\D+(\d+)/) } @$info; return \%hash;}sub get{ @_ == 2 or @_ == 3 or croak 'usage: $pop3->get( MSGNUM [, FH ])'; my $me = shift; return undef unless $me->_RETR(shift); $me->read_until_dot(@_);}sub getfh{ @_ == 2 or croak 'usage: $pop3->getfh( MSGNUM )'; my $me = shift; return unless $me->_RETR(shift); return $me->tied_fh;}sub delete{ @_ == 2 or croak 'usage: $pop3->delete( MSGNUM )'; $_[0]->_DELE($_[1]);}sub uidl{ @_ == 1 || @_ == 2 or croak 'usage: $pop3->uidl( [ MSGNUM ] )'; my $me = shift; my $uidl; $me->_UIDL(@_) or return undef; if(@_) { $uidl = ($me->message =~ /\d+\s+([\041-\176]+)/)[0]; } else { my $ref = $me->read_until_dot or return undef; my $ln; $uidl = {}; foreach $ln (@$ref) { my($msg,$uid) = $ln =~ /^\s*(\d+)\s+([\041-\176]+)/; $uidl->{$msg} = $uid; } } return $uidl;}sub ping{ @_ == 2 or croak 'usage: $pop3->ping( USER )'; my $me = shift; return () unless $me->_PING(@_) && $me->message =~ /(\d+)\D+(\d+)/; ($1 || 0, $2 || 0);}sub _lookup_credentials{ my ($me, $user) = @_; require Net::Netrc; $user ||= eval { local $SIG{__DIE__}; (getpwuid($>))[0] } || $ENV{NAME} || $ENV{USER} || $ENV{LOGNAME}; my $m = Net::Netrc->lookup(${*$me}{'net_pop3_host'},$user); $m ||= Net::Netrc->lookup(${*$me}{'net_pop3_host'}); my $pass = $m ? $m->password || "" : ""; ($user, $pass);}sub _get_mailbox_count{ my ($me) = @_; my $ret = ${*$me}{'net_pop3_count'} = ($me->message =~ /(\d+)\s+message/io) ? $1 : ($me->popstat)[0]; $ret ? $ret : "0E0";}sub _STAT { shift->command('STAT')->response() == CMD_OK }sub _LIST { shift->command('LIST',@_)->response() == CMD_OK }sub _RETR { shift->command('RETR',$_[0])->response() == CMD_OK }sub _DELE { shift->command('DELE',$_[0])->response() == CMD_OK }sub _NOOP { shift->command('NOOP')->response() == CMD_OK }sub _RSET { shift->command('RSET')->response() == CMD_OK }sub _QUIT { shift->command('QUIT')->response() == CMD_OK }sub _TOP { shift->command('TOP', @_)->response() == CMD_OK }sub _UIDL { shift->command('UIDL',@_)->response() == CMD_OK }sub _USER { shift->command('USER',$_[0])->response() == CMD_OK }sub _PASS { shift->command('PASS',$_[0])->response() == CMD_OK }sub _APOP { shift->command('APOP',@_)->response() == CMD_OK }sub _PING { shift->command('PING',$_[0])->response() == CMD_OK }sub _RPOP { shift->command('RPOP',$_[0])->response() == CMD_OK }sub _LAST { shift->command('LAST')->response() == CMD_OK }sub quit{ my $me = shift; $me->_QUIT; $me->close;}sub DESTROY{ my $me = shift; if(defined fileno($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 NAMENet::POP3 - Post Office Protocol 3 Client class (RFC1939)=head1 SYNOPSIS use Net::POP3; # Constructors $pop = Net::POP3->new('pop3host'); $pop = Net::POP3->new('pop3host', Timeout => 60); if ($pop->login($username, $password) > 0) { my $msgnums = $pop->list; # hashref of msgnum => size foreach my $msgnum (keys %$msgnums) { my $msg = $pop->get($msgnum); print @$msg; $pop->delete($msgnum); } } $pop->quit;=head1 DESCRIPTIONThis module implements a client interface to the POP3 protocol, enablinga perl5 application to talk to POP3 servers. This documentation assumesthat you are familiar with the POP3 protocol described in RFC1939.A new Net::POP3 object must be created with the I<new> method. Oncethis has been done, all POP3 commands are accessed via method callson the object.=head1 CONSTRUCTOR=over 4=item new ( [ HOST, ] [ OPTIONS ] )This is the constructor for a new Net::POP3 object. C<HOST> is thename 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<ResvPort> - If given then the socket for the C<Net::POP3> objectwill be bound to the local port given using C<bind> when the socket iscreated.B<Timeout> - Maximum time, in seconds, to wait for a response from thePOP3 server (default: 120)B<Debug> - Enable debugging information=back=head1 METHODSUnless 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 methodstates that it returns a value, failure will be returned as I<undef> or anempty 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 USER and PASS commands. If C<PASS> is not given theC<Net::POP3> uses C<Net::Netrc> to lookup the password using the hostand username. If the username is not specified then the current user namewill be used.Returns the number of messages in the mailbox. However if there are nomessages on the server the string C<"0E0"> will be returned. This iswill give a true value in a boolean context, but zero in a numeric context.If there was an error authenticating the user then I<undef> will be returned.=item apop ( [ USER [, PASS ]] )Authenticate with the server identifying as C<USER> with password C<PASS>.Similar to L</login>, but the password is not sent in clear text.To use this method you must have the Digest::MD5 or the MD5 module installed,otherwise this method will return I<undef>.=item top ( MSGNUM [, NUMLINES ] )Get the header and the first C<NUMLINES> of the body for the messageC<MSGNUM>. Returns a reference to an array which contains the lines of textread from the server.=item list ( [ MSGNUM ] )If called with an argument the C<list> returns the size of the messagein octets.If called without arguments a reference to a hash is returned. Thekeys will be the C<MSGNUM>'s of all undeleted messages and the values willbe their size in octets.=item get ( MSGNUM [, FH ] )Get the message C<MSGNUM> from the remote mailbox. If C<FH> is not giventhen get returns a reference to an array which contains the lines oftext read from the server. If C<FH> is given then the lines returnedfrom the server are printed to the filehandle C<FH>.=item getfh ( MSGNUM )As per get(), but returns a tied filehandle. Reading from thisfilehandle returns the requested message. The filehandle will returnEOF at the end of the message and should not be reused.=item last ()Returns the highest C<MSGNUM> of all the messages accessed.=item popstat ()Returns a list of two elements. These are the number of undeletedelements and the size of the mbox in octets.=item ping ( USER )Returns a list of two elements. These are the number of new messagesand the total number of messages for C<USER>.=item uidl ( [ MSGNUM ] )Returns a unique identifier for C<MSGNUM> if given. If C<MSGNUM> is notgiven C<uidl> returns a reference to a hash where the keys are themessage numbers and the values are the unique identifiers.=item delete ( MSGNUM )Mark message C<MSGNUM> to be deleted from the remote mailbox. All messagesthat are marked to be deleted will be removed from the remote mailboxwhen the server connection closed.=item reset ()Reset the status of the remote POP3 server. This includes reseting thestatus of all messages to not be deleted.=item quit ()Quit and close the connection to the remote POP3 server. Any messages markedas deleted will be deleted from the remote mailbox.=back=head1 NOTESIf a C<Net::POP3> object goes out of scope before C<quit> method is calledthen the C<reset> method will called before the connection is closed. Thismeans that any messages marked to be deleted will not be.=head1 SEE ALSOL<Net::Netrc>,L<Net::Cmd>=head1 AUTHORGraham Barr <gbarr@pobox.com>=head1 COPYRIGHTCopyright (c) 1995-1997 Graham Barr. All rights reserved.This program is free software; you can redistribute it and/or modifyit under the same terms as Perl itself.=for html <hr>I<$Id: //depot/libnet/Net/POP3.pm#24 $>=cut