summaryrefslogtreecommitdiff
path: root/Master/tlpkg/tlperl.straw/lib/Net/FTP/dataconn.pm
diff options
context:
space:
mode:
authorNorbert Preining <preining@logic.at>2010-02-28 09:36:33 +0000
committerNorbert Preining <preining@logic.at>2010-02-28 09:36:33 +0000
commit5589232e99f0fa13868111280c5b64ce9dc25730 (patch)
tree28f2e6ff422108ac87934aff9c3fc5911963625c /Master/tlpkg/tlperl.straw/lib/Net/FTP/dataconn.pm
parenta6f5de6eed80d66fbd23ceabda7edf22b8162236 (diff)
add a tlperl.straw directory for public inspection
git-svn-id: svn://tug.org/texlive/trunk@17235 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Master/tlpkg/tlperl.straw/lib/Net/FTP/dataconn.pm')
-rwxr-xr-xMaster/tlpkg/tlperl.straw/lib/Net/FTP/dataconn.pm124
1 files changed, 124 insertions, 0 deletions
diff --git a/Master/tlpkg/tlperl.straw/lib/Net/FTP/dataconn.pm b/Master/tlpkg/tlperl.straw/lib/Net/FTP/dataconn.pm
new file mode 100755
index 00000000000..e7645cbd930
--- /dev/null
+++ b/Master/tlpkg/tlperl.straw/lib/Net/FTP/dataconn.pm
@@ -0,0 +1,124 @@
+##
+## Generic data connection package
+##
+
+package Net::FTP::dataconn;
+
+use Carp;
+use vars qw(@ISA $timeout $VERSION);
+use Net::Cmd;
+use Errno;
+
+$VERSION = '0.11';
+@ISA = qw(IO::Socket::INET);
+
+
+sub reading {
+ my $data = shift;
+ ${*$data}{'net_ftp_bytesread'} = 0;
+}
+
+
+sub abort {
+ my $data = shift;
+ my $ftp = ${*$data}{'net_ftp_cmd'};
+
+ # no need to abort if we have finished the xfer
+ return $data->close
+ if ${*$data}{'net_ftp_eof'};
+
+ # for some reason if we continously open RETR connections and not
+ # read a single byte, then abort them after a while the server will
+ # close our connection, this prevents the unexpected EOF on the
+ # command channel -- GMB
+ if (exists ${*$data}{'net_ftp_bytesread'}
+ && (${*$data}{'net_ftp_bytesread'} == 0))
+ {
+ my $buf = "";
+ my $timeout = $data->timeout;
+ $data->can_read($timeout) && sysread($data, $buf, 1);
+ }
+
+ ${*$data}{'net_ftp_eof'} = 1; # fake
+
+ $ftp->abort; # this will close me
+}
+
+
+sub _close {
+ my $data = shift;
+ my $ftp = ${*$data}{'net_ftp_cmd'};
+
+ $data->SUPER::close();
+
+ delete ${*$ftp}{'net_ftp_dataconn'}
+ if exists ${*$ftp}{'net_ftp_dataconn'}
+ && $data == ${*$ftp}{'net_ftp_dataconn'};
+}
+
+
+sub close {
+ my $data = shift;
+ my $ftp = ${*$data}{'net_ftp_cmd'};
+
+ if (exists ${*$data}{'net_ftp_bytesread'} && !${*$data}{'net_ftp_eof'}) {
+ my $junk;
+ $data->read($junk, 1, 0);
+ return $data->abort unless ${*$data}{'net_ftp_eof'};
+ }
+
+ $data->_close;
+
+ $ftp->response() == CMD_OK
+ && $ftp->message =~ /unique file name:\s*(\S*)\s*\)/
+ && (${*$ftp}{'net_ftp_unique'} = $1);
+
+ $ftp->status == CMD_OK;
+}
+
+
+sub _select {
+ my ($data, $timeout, $do_read) = @_;
+ my ($rin, $rout, $win, $wout, $tout, $nfound);
+
+ vec($rin = '', fileno($data), 1) = 1;
+
+ ($win, $rin) = ($rin, $win) unless $do_read;
+
+ while (1) {
+ $nfound = select($rout = $rin, $wout = $win, undef, $tout = $timeout);
+
+ last if $nfound >= 0;
+
+ croak "select: $!"
+ unless $!{EINTR};
+ }
+
+ $nfound;
+}
+
+
+sub can_read {
+ _select(@_[0, 1], 1);
+}
+
+
+sub can_write {
+ _select(@_[0, 1], 0);
+}
+
+
+sub cmd {
+ my $ftp = shift;
+
+ ${*$ftp}{'net_ftp_cmd'};
+}
+
+
+sub bytes_read {
+ my $ftp = shift;
+
+ ${*$ftp}{'net_ftp_bytesread'} || 0;
+}
+
+1;