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📁 ..	-	2025-02-27 15:06
📄 A.pm ## ## Package to read/write on ASCII data connections ## package Net::FTP::A; use 5.008001; use strict; use warnings; use Carp; use Net::FTP::dataconn; our @ISA = qw(Net::FTP::dataconn); our $VERSION = "3.13"; our $buf; sub read { my $data = shift; local buf = \$_[0]; shift; my $size = shift \|\| croak 'read($buf,$size,[$offset])'; my $timeout = @_ ? shift: $data->timeout; if (length(${$data}) < $size && !${$data}{'net_ftp_eof'}) { my $blksize = ${$data}{'net_ftp_blksize'}; $blksize = $size if $size > $blksize; my $l = 0; my $n; READ: { my $readbuf = defined(${$data}{'net_ftp_cr'}) ? "\015" : ''; $data->can_read($timeout) or croak "Timeout"; if ($n = sysread($data, $readbuf, $blksize, length $readbuf)) { ${$data}{'net_ftp_bytesread'} += $n; ${$data}{'net_ftp_cr'} = substr($readbuf, -1) eq "\015" ? chop($readbuf) : undef; } else { return unless defined $n; ${$data}{'net_ftp_eof'} = 1; } $readbuf =~ s/\015\012/\n/sgo; ${$data} .= $readbuf; unless (length(${$data})) { redo READ if ($n > 0); $size = length(${$data}) if ($n == 0); } } } $buf = substr(${$data}, 0, $size); substr(${$data}, 0, $size) = ''; length $buf; } sub write { my $data = shift; local buf = \$_[0]; shift; my $size = shift \|\| croak 'write($buf,$size,[$timeout])'; my $timeout = @_ ? shift: $data->timeout; my $nr = (my $tmp = substr($buf, 0, $size)) =~ tr/\r\n/\015\012/; $tmp =~ s/(?<!\015)\012/\015\012/sg if $nr; $tmp =~ s/^\015// if ${$data}{'net_ftp_outcr'}; ${$data}{'net_ftp_outcr'} = substr($tmp, -1) eq "\015"; # If the remote server has closed the connection we will be signal'd # when we write. This can happen if the disk on the remote server fills up local $SIG{PIPE} = 'IGNORE' unless ($SIG{PIPE} \|\| '') eq 'IGNORE' or $^O eq 'MacOS'; my $len = length($tmp); my $off = 0; my $wrote = 0; my $blksize = ${*$data}{'net_ftp_blksize'}; while ($len) { $data->can_write($timeout) or croak "Timeout"; $off += $wrote; $wrote = syswrite($data, substr($tmp, $off), $len > $blksize ? $blksize : $len); return unless defined($wrote); $len -= $wrote; } $size; } 1;	2.34 KB	2020-12-23 11:21
📄 E.pm package Net::FTP::E; use 5.008001; use strict; use warnings; use Net::FTP::I; our @ISA = qw(Net::FTP::I); our $VERSION = "3.13"; 1;	137 B	2020-12-23 11:21
📄 I.pm ## ## Package to read/write on BINARY data connections ## package Net::FTP::I; use 5.008001; use strict; use warnings; use Carp; use Net::FTP::dataconn; our @ISA = qw(Net::FTP::dataconn); our $VERSION = "3.13"; our $buf; sub read { my $data = shift; local buf = \$_[0]; shift; my $size = shift \|\| croak 'read($buf,$size,[$timeout])'; my $timeout = @_ ? shift: $data->timeout; my $n; if ($size > length ${$data} and !${$data}{'net_ftp_eof'}) { $data->can_read($timeout) or croak "Timeout"; my $blksize = ${$data}{'net_ftp_blksize'}; $blksize = $size if $size > $blksize; unless ($n = sysread($data, ${$data}, $blksize, length ${$data})) { return unless defined $n; ${$data}{'net_ftp_eof'} = 1; } } $buf = substr(${$data}, 0, $size); $n = length($buf); substr(${$data}, 0, $n) = ''; ${$data}{'net_ftp_bytesread'} += $n; $n; } sub write { my $data = shift; local buf = \$_[0]; shift; my $size = shift \|\| croak 'write($buf,$size,[$timeout])'; my $timeout = @_ ? shift: $data->timeout; # If the remote server has closed the connection we will be signal'd # when we write. This can happen if the disk on the remote server fills up local $SIG{PIPE} = 'IGNORE' unless ($SIG{PIPE} \|\| '') eq 'IGNORE' or $^O eq 'MacOS'; my $sent = $size; my $off = 0; my $blksize = ${$data}{'net_ftp_blksize'}; while ($sent > 0) { $data->can_write($timeout) or croak "Timeout"; my $n = syswrite($data, $buf, $sent > $blksize ? $blksize : $sent, $off); return unless defined($n); $sent -= $n; $off += $n; } $size; } 1;	1.62 KB	2020-12-23 11:21
📄 L.pm package Net::FTP::L; use 5.008001; use strict; use warnings; use Net::FTP::I; our @ISA = qw(Net::FTP::I); our $VERSION = "3.13"; 1;	137 B	2020-12-23 11:21
📄 dataconn.pm ## ## Generic data connection package ## package Net::FTP::dataconn; use 5.008001; use strict; use warnings; use Carp; use Errno; use Net::Cmd; our $VERSION = '3.13'; $Net::FTP::IOCLASS or die "please load Net::FTP before Net::FTP::dataconn"; our @ISA = $Net::FTP::IOCLASS; 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 continuously 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 defined $ftp && 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 $junk; eval { local($SIG{__DIE__}); $data->read($junk, 1, 0) }; return $data->abort unless ${$data}{'net_ftp_eof'}; } $data->_close; return unless defined $ftp; $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; __END__ =head1 NAME Net::FTP::dataconn - FTP Client data connection class =head1 SYNOPSIS # Perform IO operations on an FTP client data connection object: $num_bytes_read = $obj->read($buffer, $size); $num_bytes_read = $obj->read($buffer, $size, $timeout); $num_bytes_written = $obj->write($buffer, $size); $num_bytes_written = $obj->write($buffer, $size, $timeout); $num_bytes_read_so_far = $obj->bytes_read(); $obj->abort(); $closed_successfully = $obj->close(); =head1 DESCRIPTION Some of the methods defined in C<Net::FTP> return an object which will be derived from this class. The dataconn class itself is derived from the C<IO::Socket::INET> class, so any normal IO operations can be performed. However the following methods are defined in the dataconn class and IO should be performed using these. =over 4 =item C<read($buffer, $size[, $timeout])> Read C<$size> bytes of data from the server and place it into C<$buffer>, also performing any <CRLF> translation necessary. C<$timeout> is optional, if not given, the timeout value from the command connection will be used. Returns the number of bytes read before any <CRLF> translation. =item C<write($buffer, $size[, $timeout])> Write C<$size> bytes of data from C<$buffer> to the server, also performing any <CRLF> translation necessary. C<$timeout> is optional, if not given, the timeout value from the command connection will be used. Returns the number of bytes written before any <CRLF> translation. =item C<bytes_read()> Returns the number of bytes read so far. =item C<abort()> Abort the current data transfer. =item C<close()> Close the data connection and get a response from the FTP server. Returns I<true> if the connection was closed successfully and the first digit of the response from the server was a '2'. =back =head1 EXPORTS I<None>. =head1 KNOWN BUGS I<None>. =head1 AUTHOR Graham Barr E<lt>L<gbarr@pobox.com\|mailto:gbarr@pobox.com>E<gt>. Steve Hay E<lt>L<shay@cpan.org\|mailto:shay@cpan.org>E<gt> is now maintaining libnet as of version 1.22_02. =head1 COPYRIGHT Copyright (C) 1997-2010 Graham Barr. All rights reserved. Copyright (C) 2013-2014, 2020 Steve Hay. All rights reserved. =head1 LICENCE This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself, i.e. under the terms of either the GNU General Public License or the Artistic License, as specified in the F<LICENCE> file. =head1 VERSION Version 3.13 =head1 DATE 23 Dec 2020 =head1 HISTORY See the F<Changes> file. =cut	4.9 KB	2020-12-23 11:21

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