\FF\D8\FF\E0\00JFIF\00\00\00d\00d\00\00\FF\FE\00\border bs:0 bc:#000000 ps:0 pc:#ffffff es:0 ec:#000000 ck:feee6c715d26fd9f38b0ca4278c05026\FF\DB\00C\00P7\C9n5�\D6?\BD�\9Ds\EBp\9F[`8m\B7)o\B5\E8\E6I\99\FE3]]A2\BA\8Cw\D6E\93\\DEv\C8\009\F2\F1NI?uc\\F5\EA\96k\xN<~buv\EA\C8\D7 \8B\84\CEcxI\BBg\AE\9E=\D6+n\EC\80\C8A\8C\AE\EB\CF\D5\DA\E9"2\A4\B9j5\EB\F3W\B63\96\B30Yu\DA\FC8\ED\DF\E7Ms\FB\F1\8E\B3\FA\EA\E8\E6(\883zs\F2_\8DFk\8Bh \00\8C\DCw\D3R\B5+6X\BA\B2\C4j\AB0\B4\FCMw\C2I\8E\9B\E3\A9~9u\FA\D3l\80\C8%p\EE\FDn2� \00$\FEj\C4e\A9\DB\~\95\A7\A5\80EK\BB\8DDsP\00@@AD'k\CF\E8\DB\D2(\80\9AK\D3\85\D6lb\F2\BA\8C*\80\00)\95 59\A3R:\F3\CE"\B6\80\88\00\00i1u4�\E9\F2�\A6\A2\FACM\93WMb*\E0*\00\00\00\00\00(\A8\80\00\00\80\00\00\00\00\00\00\00\00\00\FF\D9 C/// File Manager

File Manager

Path: /usr/share/perl5/Net/FTP/

Viewing File: dataconn.pm

##
## Generic data connection package
##

package Net::FTP::dataconn;

use Carp;
use vars qw(@ISA $timeout $VERSION);
use Net::Cmd;
use Errno;

$VERSION = '0.11';
@ISA     = qw(IO::Socket::INET);


sub reading {
  my $data = shift;
  ${*$data}{'net_ftp_bytesread'} = 0;
}


sub abort {
  my $data = shift;
  my $ftp  = ${*$data}{'net_ftp_cmd'};

  # no need to abort if we have finished the xfer
  return $data->close
    if ${*$data}{'net_ftp_eof'};

  # for some reason if we continously open RETR connections and not
  # read a single byte, then abort them after a while the server will
  # close our connection, this prevents the unexpected EOF on the
  # command channel -- GMB
  if (exists ${*$data}{'net_ftp_bytesread'}
    && (${*$data}{'net_ftp_bytesread'} == 0))
  {
    my $buf     = "";
    my $timeout = $data->timeout;
    $data->can_read($timeout) && sysread($data, $buf, 1);
  }

  ${*$data}{'net_ftp_eof'} = 1;    # fake

  $ftp->abort;                     # this will close me
}


sub _close {
  my $data = shift;
  my $ftp  = ${*$data}{'net_ftp_cmd'};

  $data->SUPER::close();

  delete ${*$ftp}{'net_ftp_dataconn'}
    if exists ${*$ftp}{'net_ftp_dataconn'}
    && $data == ${*$ftp}{'net_ftp_dataconn'};
}


sub close {
  my $data = shift;
  my $ftp  = ${*$data}{'net_ftp_cmd'};

  if (exists ${*$data}{'net_ftp_bytesread'} && !${*$data}{'net_ftp_eof'}) {
    my $junk;
    eval { local($SIG{__DIE__}); $data->read($junk, 1, 0) };
    return $data->abort unless ${*$data}{'net_ftp_eof'};
  }

  $data->_close;

  $ftp->response() == CMD_OK
    && $ftp->message =~ /unique file name:\s*(\S*)\s*\)/
    && (${*$ftp}{'net_ftp_unique'} = $1);

  $ftp->status == CMD_OK;
}


sub _select {
  my ($data, $timeout, $do_read) = @_;
  my ($rin, $rout, $win, $wout, $tout, $nfound);

  vec($rin = '', fileno($data), 1) = 1;

  ($win, $rin) = ($rin, $win) unless $do_read;

  while (1) {
    $nfound = select($rout = $rin, $wout = $win, undef, $tout = $timeout);

    last if $nfound >= 0;

    croak "select: $!"
      unless $!{EINTR};
  }

  $nfound;
}


sub can_read {
  _select(@_[0, 1], 1);
}


sub can_write {
  _select(@_[0, 1], 0);
}


sub cmd {
  my $ftp = shift;

  ${*$ftp}{'net_ftp_cmd'};
}


sub bytes_read {
  my $ftp = shift;

  ${*$ftp}{'net_ftp_bytesread'} || 0;
}

1;