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70 lines
1.6 KiB
70 lines
1.6 KiB
##
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## Package to read/write on BINARY data connections
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##
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package Net::FTP::I;
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use vars qw(@ISA $buf $VERSION);
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use Carp;
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require Net::FTP::dataconn;
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@ISA = qw(Net::FTP::dataconn);
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$VERSION = "1.08"; # $Id: //depot/libnet/Net/FTP/I.pm#6$
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sub read {
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my $data = shift;
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local *buf = \$_[0]; shift;
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my $size = shift || croak 'read($buf,$size,[$timeout])';
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my $timeout = @_ ? shift : $data->timeout;
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$data->can_read($timeout) or
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croak "Timeout";
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my($b,$n,$l);
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my $blksize = ${*$data}{'net_ftp_blksize'};
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$blksize = $size if $size > $blksize;
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while(($l = length(${*$data})) < $size) {
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$n += ($b = sysread($data, ${*$data}, $blksize, $l));
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last unless $b;
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}
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$n = $size < ($l = length(${*$data})) ? $size : $l;
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$buf = substr(${*$data},0,$n);
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substr(${*$data},0,$n) = '';
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${*$data}{'net_ftp_bytesread'} += $n if $n;
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${*$data}{'net_ftp_eof'} = 1 unless $n;
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$n;
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}
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sub write {
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my $data = shift;
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local *buf = \$_[0]; shift;
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my $size = shift || croak 'write($buf,$size,[$timeout])';
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my $timeout = @_ ? shift : $data->timeout;
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$data->can_write($timeout) or
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croak "Timeout";
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# If the remote server has closed the connection we will be signal'd
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# when we write. This can happen if the disk on the remote server fills up
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local $SIG{PIPE} = 'IGNORE';
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my $sent = $size;
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my $off = 0;
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while($sent > 0) {
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my $n = syswrite($data, $buf, $sent,$off);
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return undef unless defined($n);
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$sent -= $n;
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$off += $n;
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}
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$size;
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}
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1;
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