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+#!/usr/bin/perl
+
+# Perl version of Christoph Lameter's debpkg program.
+# Written by Julian Gilbey, December 1998.
+
+# Copyright 1999, Julian Gilbey
+#
+# 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/>.
+
+# All this program does is to check that it is either running as root
+# or setuid root, and then exec dpkg with the command line options.
+
+# As this may be running setuid, we make sure to clean out the
+# environment before we go further. Also wise for building the
+# packages, anyway. We don't put /usr/local/bin in the PATH as Debian
+# programs will presumably be built without the use of any locally
+# installed programs. This could be changed, but in which case,
+# you probably want to add /usr/local/bin at the END so that you don't
+# get any unexpected behaviour.
+
+use 5.003;
+use strict;
+use warnings;
+use File::Basename;
+
+my $progname = basename($0);
+
+# Predeclare functions
+sub fatal($);
+
+my $usage = "Usage: $progname --help|--version|dpkg-options\n";
+
+my $version = <<"EOF";
+This is $progname, from the Debian devscripts package, version ###VERSION###
+This code is copyright 1999 by Julian Gilbey, all rights reserved.
+Based on code by Christoph Lameter.
+This program comes with ABSOLUTELY NO WARRANTY.
+You are free to redistribute this code under the terms of the
+GNU General Public License, version 2 or later.
+EOF
+
+##
+## handle command-line options
+##
+if (!@ARGV) { print STDERR $usage; exit 1; }
+if ($ARGV[0] eq '--help') { print $usage; exit 0; }
+if ($ARGV[0] eq '--version') { print $version; exit 0; }
+
+# We *do* preserve locale variables; dpkg should know how to handle
+# them, and anyone running this with root privileges has total power
+# over the system anyway, so doesn't really need to worry about forging
+# locale data. We don't try to preserve TEXTDOMAIN and the like.
+foreach my $var (keys %ENV) {
+ delete $ENV{$var}
+ unless $var =~ /^(PATH|TERM|HOME|LOGNAME|LANG)$/
+ or $var =~ /^LC_[A-Z]+$/;
+}
+
+$ENV{'PATH'} = "/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11";
+# $ENV{'PATH'} = "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11";
+$ENV{'TERM'} = 'dumb' unless defined $ENV{'TERM'};
+
+# Pick up superuser privileges if we are running setuid root
+if ($< != 0 && $> == 0) { $< = $>; }
+fatal "debpkg is only useful if it is run by root or setuid root!"
+ if $< != 0;
+
+# Pick up group 'root'
+$( = $) = 0;
+
+# @ARGV is tainted, so we need to untaint it. Don't bother doing any
+# checking; anyone running this as root can do anything anyway.
+my @clean_argv = map { /^(.*)$/ && $1; } @ARGV;
+exec 'dpkg', @clean_argv or fatal "Couldn't exec dpkg: $!\n";
+
+###### Subroutines
+
+sub fatal($) {
+ my ($pack, $file, $line);
+ ($pack, $file, $line) = caller();
+ (my $msg = "$progname: fatal error at line $line:\n@_\n") =~ tr/\0//d;
+ $msg =~ s/\n\n$/\n/;
+ die $msg;
+}