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✏️ Editing: dpkg+

#! /usr/bin/perl
#
# 1999 (c) Piotr Roszatycki <dexter@debian.org>
# This software is under GNU license
# last modification: 1999-12-08
#
# dpkg

sub quote {
    $_ = shift(@_);
    s/([^\w\/.+-])/\\$1/g;
    return($_);
}

sub bt
{
    my ($dt) = @_;
    my (@time);
    @time = localtime($dt);
    $bt = sprintf "%02d-%02d-%d %02d:%02d", $time[4] + 1, $time[3],
		  $time[5] + 1900, $time[2], $time[1];
    return $bt;
}

sub ft
{
    my ($f) = @_;
    return "d" if -d $f;
    return "l" if -l $f;
    return "p" if -p $f;
    return "S" if -S $f;
    return "b" if -b $f;
    return "c" if -c $f;
    return "-";
}

sub fm
{
    my ($n) = @_;
    my ($m);

if( $n & 0400 ) {
       $m .= "r";
    } else {
       $m .= "-";
    }
    if( $n & 0200 ) {
       $m .= "w";
    } else {
       $m .= "-";
    }
    if( $n & 04000 ) {
       $m .= "s";
    } elsif( $n & 0100 ) {
       $m .= "x";
    } else {
       $m .= "-";
    }

if( $n & 0040 ) {
       $m .= "r";
    } else {
       $m .= "-";
    }
    if( $n & 0020 ) {
       $m .= "w";
    } else {
       $m .= "-";
    }
    if( $n & 02000 ) {
       $m .= "s";
    } elsif( $n & 0010 ) {
       $m .= "x";
    } else {
       $m .= "-";
    }

if( $n & 0004 ) {
       $m .= "r";
    } else {
       $m .= "-";
    }
    if( $n & 0002 ) {
       $m .= "w";
    } else {
       $m .= "-";
    }
    if( $n & 01000 ) {
       $m .= "t";
    } elsif( $n & 0001 ) {
       $m .= "x";
    } else {
       $m .= "-";
    }

return $m;
}

sub ls {
    my ($file,$path,$mode) = @_;

if (-f $file) {
	my @stat = stat(_);
	# mode, nlink, uid, gid, size, mtime, filename
	printf "%s %d %d %d %d %s %s\n", $mode || ft($file).fm($stat[2] & 07777),
	  $stat[3], $stat[4], $stat[5], $stat[7], bt($stat[9]), $path;
    }
}

$DATE=bt(time());

sub list
{
    my ($pkg, $fn, $dn, $sz, $bt);
    my %debs = ();
    my %sects = ();

my($diversions,$architecture);
    chop($diversions = `dpkg-divert --list 2>/dev/null`);
    chop($architecture = `dpkg-architecture 2>/dev/null`);
    chop($list = `dpkg -l '*' 2>/dev/null`);
    chop($getselections = `dpkg --get-selections 2>/dev/null`);
    chop($audit = `dpkg --audit 2>/dev/null`);
    $sz = length($diversions);
    print "-r--r--r-- 1 root root $sz $DATE DIVERSIONS\n";
    $sz = length($architecture);
    print "-r--r--r-- 1 root root $sz $DATE ARCHITECTURE\n";
    $sz = length($list);
    print "-r--r--r-- 1 root root $sz $DATE LIST\n";
    $sz = length($getselections);
    print "-r--r--r-- 1 root root $sz $DATE GET-SELECTIONS\n";
    $sz = length($audit);
    print "-r--r--r-- 1 root root $sz $DATE AUDIT\n";
    $sz = length($pressconfigure);
    print "-r-xr--r-- 1 root root $sz $DATE CONFIGURE\n";
    $sz = length($pressremove);
    print "-r-xr--r-- 1 root root $sz $DATE REMOVE\n";
    $sz = length($pressclearavail);
    print "-r-xr--r-- 1 root root $sz $DATE CLEAR-AVAIL\n";
    $sz = length($pressforgetoldunavail);
    print "-r-xr--r-- 1 root root $sz $DATE FORGET-OLD-UNAVAIL\n";
    ls("/var/lib/dpkg/status","STATUS","-r--r--r--");
    # ls("/var/lib/dpkg/available","AVAILABLE","-r--r--r--");

print "drwxr-xr-x 1 root root 0 $DATE all\n";

open STAT, "/var/lib/dpkg/status"
       or exit 1;
    while( <STAT> ) {
       chop;
       if( /^([\w-]*): (.*)/ ) {
           $pkg = $2 if( lc($1) eq 'package' );
           $debs{$pkg}{lc($1)} = $2;
       }
    }
    close STAT;

foreach $pkg (sort keys %debs) {
       next if $debs{$pkg}{status} =~ /not-installed/;
       $fn = $debs{$pkg}{package}. "_". $debs{$pkg}{version};
       $dn = $debs{$pkg}{section};
       if( ! $dn ) {
           $dn = "unknown";
       } elsif( $dn =~ /^(non-us)$/i ) {
           $dn .= "/main";
       } elsif( $dn !~ /\// ) {
           $dn = "main/". $dn;
       }
       unless( $sects{$dn} ) {
           my $sub = $dn;
           while( $sub =~ s!^(.*)/[^/]*$!$1! ) {
               unless( $sects{$sub} ) {
                   print "drwxr-xr-x 1 root root 0 $DATE $sub/\n";
                   $sects{$sub} = 1;
               }
           }
           print "drwxr-xr-x 1 root root 0 $DATE $dn/\n";
           $sects{$dn} = 1;
       }
       $sz = $debs{$pkg}{'status'} =~ /config-files/ ? 0 : $debs{$pkg}{'installed-size'} * 1024;
       @stat = stat("/var/lib/dpkg/info/".$debs{$pkg}{package}.".list");
       $bt = bt($stat[9]);
       print "-rw-r--r-- 1 root root $sz $bt $dn/$fn.debd\n";
       print "lrwxrwxrwx 1 root root $sz $bt all/$fn.debd -> ../$dn/$fn.debd\n";
    }
}

sub copyout
{
    my($archive,$filename) = @_;
    my $qfilename = quote($filename);
    if( $archive eq 'DIVERSIONS' ) {
       system("dpkg-divert --list > $qfilename 2>/dev/null");
    } elsif( $archive eq 'ARCHITECTURE' ) {
       system("dpkg-architecture > $qfilename 2>/dev/null");
    } elsif( $archive eq 'LIST' ) {
       system("dpkg -l '*' > $qfilename 2>/dev/null");
    } elsif( $archive eq 'AUDIT' ) {
       system("dpkg --audit > $qfilename 2>/dev/null");
    } elsif( $archive eq 'GET-SELECTIONS' ) {
       system("dpkg --get-selections > $qfilename 2>/dev/null");
    } elsif( $archive eq 'STATUS' ) {
       system("cp /var/lib/dpkg/status $qfilename");
    } elsif( $archive eq 'AVAILABLE' ) {
       system("cp /var/lib/dpkg/available $qfilename");
    } elsif( $archive eq 'CONFIGURE' ) {
       open O, ">$filename";
       print O $pressconfigure;
       close O;
    } elsif( $archive eq 'REMOVE' ) {
       open O, ">$filename";
       print O $pressremove;
       close O;
    } elsif( $archive eq 'CLEAR-AVAIL' ) {
       open O, ">$filename";
       print O $pressclearavail;
       close O;
    } elsif( $archive eq 'FORGET-OLD-UNAVAIL' ) {
       open O, ">$filename";
       print O $pressforgetoldunavail;
       close O;
    } else {
       open O, ">$filename";
       print O $archive, "\n";
       close O;
    }
}

# too noisy but less dangerouse
sub copyin
{
    my($archive,$filename) = @_;
    my $qfilename = quote($filename);
    if( $archive =~ /\.deb$/ ) {
       system("dpkg -i $qfilename>/dev/null");
    } else {
       die "extfs: cannot create regular file \`$archive\': Permission denied\n";
    }
}

sub run
{
    my($archive,$filename) = @_;
    if( $archive eq 'CONFIGURE' ) {
       system("dpkg --pending --configure");
    } elsif( $archive eq 'REMOVE' ) {
       system("dpkg --pending --remove");
    } elsif( $archive eq 'CLEAR-AVAIL' ) {
       system("dpkg --clear-avail");
    } elsif( $archive eq 'FORGET-OLD-UNAVAIL' ) {
       system("dpkg --forget-old-unavail");
    } else {
       die "extfs: $filename: command not found\n";
    }
}

# Disabled - too dangerous and too noisy
sub rm_disabled
{
    my($archive) = @_;
    if( $archive =~ /\.debd?$/ ) {
       my $qname = quote($archive);
       $qname =~ s%.*/%%g;
       $qname =~ s%_.*%%g;
       system("if dpkg -s $qname | grep ^Status | grep -qs config-files; \
           then dpkg --purge $qname>/dev/null; \
           else dpkg --remove $qname>/dev/null; fi");
       die("extfs: $archive: Operation not permitted\n") if $? != 0;
    } else {
       die "extfs: $archive: Operation not permitted\n";
    }
}

$pressconfigure=<<EOInstall;

WARNING
     Don\'t use this method if you are not willing to configure all
                     non configured packages.

This is not a real file. It is a way to configure all non configured packages.

To configure packages go back to the panel and press Enter on this file.

EOInstall

$pressremove=<<EOInstall;

WARNING
     Don\'t use this method if you are not willing to remove all 
                      unselected packages.

This is not a real file. It is a way to remove all unselected packages.

To remove packages go back to the panel and press Enter on this file.

EOInstall

$pressforgetoldunavail=<<EOInstall;

WARNING
     Don\'t use this method if you are not willing to forget about
                 uninstalled unavailable packages.

This is not a real file. It is a way to forget about uninstalled
unavailable packages.

To forget this information go back to the panel and press Enter on this file.

EOInstall

$pressclearavail=<<EOInstall;

WARNING
     Don\'t use this method if you are not willing to erase the existing
           information about what packages are available.

This is not a real file. It is a way to erase the existing information
about what packages are available.

To clear this information go back to the panel and press Enter on this file.

EOInstall

# override any locale for dates
$ENV{"LC_ALL"}="C";

if ($ARGV[0] eq "list") { list(); exit(0); }
elsif ($ARGV[0] eq "copyout") { copyout($ARGV[2], $ARGV[3]); exit(0); }
elsif ($ARGV[0] eq "copyin") { copyin($ARGV[2], $ARGV[3]); exit(0); }
elsif ($ARGV[0] eq "run") { run($ARGV[2],$ARGV[3]); exit(0); }
#elsif ($ARGV[0] eq "rm") { rm($ARGV[2]); exit(0); }
exit(1);

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