[14489] | 1 | ## $Id: //depot/libnet/Net/FTP/I.pm#13 $
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| 2 | ## Package to read/write on BINARY data connections
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| 3 | ##
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| 4 |
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| 5 | package Net::FTP::I;
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| 6 |
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| 7 | use vars qw(@ISA $buf $VERSION);
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| 8 | use Carp;
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| 9 |
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| 10 | require Net::FTP::dataconn;
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| 11 |
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| 12 | @ISA = qw(Net::FTP::dataconn);
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| 13 | $VERSION = "1.12";
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| 14 |
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| 15 | sub read {
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| 16 | my $data = shift;
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| 17 | local *buf = \$_[0]; shift;
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| 18 | my $size = shift || croak 'read($buf,$size,[$timeout])';
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| 19 | my $timeout = @_ ? shift : $data->timeout;
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| 20 |
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| 21 | my $n;
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| 22 |
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| 23 | if ($size > length ${*$data} and !${*$data}{'net_ftp_eof'}) {
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| 24 | $data->can_read($timeout) or
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| 25 | croak "Timeout";
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| 26 |
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| 27 | my $blksize = ${*$data}{'net_ftp_blksize'};
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| 28 | $blksize = $size if $size > $blksize;
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| 29 |
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| 30 | unless ($n = sysread($data, ${*$data}, $blksize, length ${*$data})) {
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| 31 | return undef unless defined $n;
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| 32 | ${*$data}{'net_ftp_eof'} = 1;
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| 33 | }
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| 34 | }
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| 35 |
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| 36 | $buf = substr(${*$data},0,$size);
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| 37 |
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| 38 | $n = length($buf);
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| 39 |
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| 40 | substr(${*$data},0,$n) = '';
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| 41 |
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| 42 | ${*$data}{'net_ftp_bytesread'} += $n;
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| 43 |
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| 44 | $n;
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| 45 | }
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| 46 |
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| 47 | sub write {
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| 48 | my $data = shift;
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| 49 | local *buf = \$_[0]; shift;
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| 50 | my $size = shift || croak 'write($buf,$size,[$timeout])';
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| 51 | my $timeout = @_ ? shift : $data->timeout;
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| 52 |
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| 53 | # If the remote server has closed the connection we will be signal'd
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| 54 | # when we write. This can happen if the disk on the remote server fills up
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| 55 |
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| 56 | local $SIG{PIPE} = 'IGNORE' unless $^O eq 'MacOS';
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| 57 | my $sent = $size;
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| 58 | my $off = 0;
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| 59 |
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| 60 | my $blksize = ${*$data}{'net_ftp_blksize'};
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| 61 | while($sent > 0) {
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| 62 | $data->can_write($timeout) or
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| 63 | croak "Timeout";
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| 64 |
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| 65 | my $n = syswrite($data, $buf, $sent > $blksize ? $blksize : $sent ,$off);
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| 66 | return undef unless defined($n);
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| 67 | $sent -= $n;
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| 68 | $off += $n;
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| 69 | }
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| 70 |
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| 71 | $size;
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| 72 | }
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| 73 |
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| 74 | 1;
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