Adding upstream version 1.22.4.upstream/1.22.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 232 insertions, 0 deletions

diff --git a/dselect/methods/Dselect/Method/Ftp.pm b/dselect/methods/Dselect/Method/Ftp.pm
new file mode 100644
index 0000000..c149e0e
--- /dev/null
+++ b/dselect/methods/Dselect/Method/Ftp.pm
@@ -0,0 +1,232 @@
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+=encoding utf8
+
+=head1 NAME
+
+Dselect::Method::Ftp - dselect FTP method support
+
+=head1 DESCRIPTION
+
+This module provides support functions for the FTP method.
+
+B<Note>: This is a private module, its API can change at any time.
+
+=cut
+
+package Dselect::Method::Ftp 0.01;
+
+use strict;
+use warnings;
+
+our @EXPORT = qw(
+    do_connect
+    do_mdtm
+);
+
+use Exporter qw(import);
+use Carp;
+
+eval q{
+    use Net::FTP;
+    use Data::Dumper;
+};
+if ($@) {
+    warn "Missing Net::FTP modules required by the FTP access method.\n\n";
+    exit 1;
+}
+
+sub do_connect {
+    my (%opts) = @_;
+
+    my($rpass,$remotehost,$remoteuser,$ftp);
+
+  TRY_CONNECT:
+    while(1) {
+	my $exit = 0;
+
+	if ($opts{useproxy}) {
+	    $remotehost = $opts{proxyhost};
+	    $remoteuser = $opts{username} . '@' . $opts{ftpsite};
+	} else {
+	    $remotehost = $opts{ftpsite};
+	    $remoteuser = $opts{username};
+	}
+	print "Connecting to $opts{ftpsite}...\n";
+	$ftp = Net::FTP->new($remotehost, Passive => $opts{passive});
+	if(!$ftp || !$ftp->ok) {
+	  print "Failed to connect\n";
+	  $exit = 1;
+	}
+	if (!$exit) {
+#    $ftp->debug(1);
+	    if ($opts{useproxy}) {
+		print "Login on $opts{proxyhost}...\n";
+		$ftp->_USER($opts{proxylogname});
+		$ftp->_PASS($opts{proxypassword});
+	    }
+	    print "Login as $opts{username}...\n";
+	    if ($opts{password} eq '?') {
+		    print 'Enter password for ftp: ';
+		    system('stty', '-echo');
+		    $rpass = <STDIN>;
+		    chomp $rpass;
+		    print "\n";
+		    system('stty', 'echo');
+	    } else {
+		    $rpass = $opts{password};
+	    }
+	    if(!$ftp->login($remoteuser, $rpass))
+	    { print $ftp->message() . "\n"; $exit = 1; }
+	}
+	if (!$exit) {
+	    print "Setting transfer mode to binary...\n";
+	    if(!$ftp->binary()) { print $ftp->message . "\n"; $exit = 1; }
+	}
+	if (!$exit) {
+	    print "Cd to '$opts{ftpdir}'...\n";
+	    if (!$ftp->cwd($opts{ftpdir})) {
+		print $ftp->message . "\n";
+		$exit = 1;
+	    }
+	}
+
+	if ($exit) {
+	    if (yesno ('y', 'Retry connection at once')) {
+		next TRY_CONNECT;
+	    } else {
+		die 'error';
+	    }
+	}
+
+	last TRY_CONNECT;
+    }
+
+#    if(!$ftp->pasv()) { print $ftp->message . "\n"; die 'error'; }
+
+    return $ftp;
+}
+
+##############################
+
+# assume server supports MDTM - will be adjusted if needed
+my $has_mdtm = 1;
+
+my %months = (
+    Jan => 0,
+    Feb => 1,
+    Mar => 2,
+    Apr => 3,
+    May => 4,
+    Jun => 5,
+    Jul => 6,
+    Aug => 7,
+    Sep => 8,
+    Oct => 9,
+    Nov => 10,
+    Dec => 11,
+);
+
+my $ls_l_re = qr<
+    ([^ ]+\ *){5}                       # Perms, Links, User, Group, Size
+    [^ ]+                               # Blanks
+    \ ([A-Z][a-z]{2})                   # Month name (abbreviated)
+    \ ([0-9 ][0-9])                     # Day of month
+    \ ([0-9 ][0-9][:0-9][0-9]{2})       # Filename
+>x;
+
+sub do_mdtm {
+    my ($ftp, $file) = @_;
+    my ($time);
+
+    #if ($has_mdtm) {
+	$time = $ftp->mdtm($file);
+#	my $code = $ftp->code();
+#	my $message = $ftp->message();
+#	print " [ $code: $message ] ";
+	if ($ftp->code() == 502 || # MDTM not implemented
+	    $ftp->code() == 500) { # command not understood (SUN firewall)
+	    $has_mdtm = 0;
+	} elsif (!$ftp->ok()) {
+	    return;
+	}
+    #}
+
+    if (! $has_mdtm) {
+	require Time::Local;
+
+	my @files = $ftp->dir($file);
+	if (($#files == -1) ||
+	    ($ftp->code == 550)) { # No such file or directory
+	    return;
+	}
+
+#	my $code = $ftp->code();
+#	my $message = $ftp->message();
+#	print " [ $code: $message ] ";
+
+#	print "[$#files]";
+
+	# get the date components from the output of 'ls -l'
+	if ($files[0] =~ $ls_l_re) {
+            my($month_name, $day, $year_or_time, $month, $hours, $minutes,
+	       $year);
+
+	    # what we can read
+	    $month_name = $2;
+	    $day = 0 + $3;
+	    $year_or_time = $4;
+
+	    # translate the month name into number
+	    $month = $months{$month_name};
+
+	    # recognize time or year, and compute missing one
+	    if ($year_or_time =~ /([0-9]{2}):([0-9]{2})/) {
+		$hours = 0 + $1; $minutes = 0 + $2;
+		my @this_date = gmtime(time());
+		my $this_month = $this_date[4];
+		my $this_year = $this_date[5];
+		if ($month > $this_month) {
+		    $year = $this_year - 1;
+		} else {
+		    $year = $this_year;
+		}
+	    } elsif ($year_or_time =~ / [0-9]{4}/) {
+		$hours = 0; $minutes = 0;
+		$year = $year_or_time - 1900;
+	    } else {
+		die 'cannot parse year-or-time';
+	    }
+
+	    # build a system time
+	    $time = Time::Local::timegm(0, $minutes, $hours, $day, $month, $year);
+	} else {
+	    die 'regex match failed on LIST output';
+	}
+    }
+
+    return $time;
+}
+
+=head1 CHANGES
+
+=head2 Version 0.xx
+
+This is a private module.
+
+=cut
+
+1;
+
+__END__