116 lines
2.3 KiB
Perl
116 lines
2.3 KiB
Perl
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##
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## Package to read/write on ASCII data connections
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##
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package Net::FTP::A;
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use 5.008001;
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use strict;
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use warnings;
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use Carp;
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use Net::FTP::dataconn;
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our @ISA = qw(Net::FTP::dataconn);
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our $VERSION = "3.11";
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our $buf;
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sub read {
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my $data = shift;
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local *buf = \$_[0];
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shift;
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my $size = shift || croak 'read($buf,$size,[$offset])';
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my $timeout = @_ ? shift: $data->timeout;
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if (length(${*$data}) < $size && !${*$data}{'net_ftp_eof'}) {
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my $blksize = ${*$data}{'net_ftp_blksize'};
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$blksize = $size if $size > $blksize;
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my $l = 0;
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my $n;
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READ:
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{
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my $readbuf = defined(${*$data}{'net_ftp_cr'}) ? "\015" : '';
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$data->can_read($timeout)
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or croak "Timeout";
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if ($n = sysread($data, $readbuf, $blksize, length $readbuf)) {
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${*$data}{'net_ftp_bytesread'} += $n;
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${*$data}{'net_ftp_cr'} =
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substr($readbuf, -1) eq "\015"
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? chop($readbuf)
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: undef;
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}
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else {
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return
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unless defined $n;
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${*$data}{'net_ftp_eof'} = 1;
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}
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$readbuf =~ s/\015\012/\n/sgo;
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${*$data} .= $readbuf;
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unless (length(${*$data})) {
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redo READ
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if ($n > 0);
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$size = length(${*$data})
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if ($n == 0);
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}
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}
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}
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$buf = substr(${*$data}, 0, $size);
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substr(${*$data}, 0, $size) = '';
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length $buf;
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}
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sub write {
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my $data = shift;
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local *buf = \$_[0];
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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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my $nr = (my $tmp = substr($buf, 0, $size)) =~ tr/\r\n/\015\012/;
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$tmp =~ s/(?<!\015)\012/\015\012/sg if $nr;
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$tmp =~ s/^\015// if ${*$data}{'net_ftp_outcr'};
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${*$data}{'net_ftp_outcr'} = substr($tmp, -1) eq "\015";
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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 $SIG{PIPE} = 'IGNORE'
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unless ($SIG{PIPE} || '') eq 'IGNORE'
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or $^O eq 'MacOS';
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my $len = length($tmp);
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my $off = 0;
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my $wrote = 0;
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my $blksize = ${*$data}{'net_ftp_blksize'};
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while ($len) {
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$data->can_write($timeout)
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or croak "Timeout";
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$off += $wrote;
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$wrote = syswrite($data, substr($tmp, $off), $len > $blksize ? $blksize : $len);
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return
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unless defined($wrote);
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$len -= $wrote;
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}
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$size;
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}
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1;
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