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