## ## Package to read/write on BINARY data connections ## package Net::FTP::I; use vars qw(@ISA $buf $VERSION); use Carp; require Net::FTP::dataconn; @ISA = qw(Net::FTP::dataconn); $VERSION = "1.12"; sub read { my $data = shift; local *buf = \$_[0]; shift; my $size = shift || croak 'read($buf,$size,[$timeout])'; my $timeout = @_ ? shift: $data->timeout; my $n; if ($size > length ${*$data} and !${*$data}{'net_ftp_eof'}) { $data->can_read($timeout) or croak "Timeout"; my $blksize = ${*$data}{'net_ftp_blksize'}; $blksize = $size if $size > $blksize; unless ($n = sysread($data, ${*$data}, $blksize, length ${*$data})) { return undef unless defined $n; ${*$data}{'net_ftp_eof'} = 1; } } $buf = substr(${*$data}, 0, $size); $n = length($buf); substr(${*$data}, 0, $n) = ''; ${*$data}{'net_ftp_bytesread'} += $n; $n; } sub write { my $data = shift; local *buf = \$_[0]; shift; my $size = shift || croak 'write($buf,$size,[$timeout])'; my $timeout = @_ ? shift: $data->timeout; # If the remote server has closed the connection we will be signal'd # when we write. This can happen if the disk on the remote server fills up local $SIG{PIPE} = 'IGNORE' unless ($SIG{PIPE} || '') eq 'IGNORE' or $^O eq 'MacOS'; my $sent = $size; my $off = 0; my $blksize = ${*$data}{'net_ftp_blksize'}; while ($sent > 0) { $data->can_write($timeout) or croak "Timeout"; my $n = syswrite($data, $buf, $sent > $blksize ? $blksize : $sent, $off); return undef unless defined($n); $sent -= $n; $off += $n; } $size; } 1;