96 lines
1.8 KiB
Perl
96 lines
1.8 KiB
Perl
##
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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 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 = sprintf("1.%02d",(q$Id: //depot/libnet/Net/FTP/A.pm#6$ =~ /#(\d+)/)[0]);
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sub read
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{
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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,$size,[$offset])';
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my $timeout = @_ ? shift : $data->timeout;
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${*$data} ||= "";
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my $l = 0;
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READ:
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{
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$data->can_read($timeout) or
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croak "Timeout";
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$buf = ${*$data};
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${*$data} = "";
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my $n = sysread($data, $buf, $size, length $buf);
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return $n
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if($n < 0);
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${*$data}{'net_ftp_bytesread'} += $n;
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${*$data}{'net_ftp_eof'} = 1 unless $n;
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$buf =~ s/(\015)?(?!\012)\Z//so;
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${*$data} = $1 || "";
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$buf =~ s/\015\012/\n/sgo;
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$l = length($buf);
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redo READ
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if($l == 0 && $n > 0);
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if($n == 0 && $l == 0)
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{
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$buf = ${*$data};
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${*$data} = "";
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$l = length($buf);
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}
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}
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return $l;
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}
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sub write
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{
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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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# What is previous pkt ended in \015 or not ??
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my $tmp;
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($tmp = substr($buf,0,$size)) =~ s/(?!\015)\012/\015\012/sg;
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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 $len = length($tmp);
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my $off = 0;
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my $wrote = 0;
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while($len) {
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$off += $wrote;
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$wrote = syswrite($data, substr($tmp,$off), $len);
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return $wrote
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if $wrote <= 0;
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$len -= $wrote;
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}
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return $size;
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}
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1;
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