This file is indexed.

/usr/bin/sgclean is in squidguard 1.4-4build1.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
#!/usr/bin/perl -w
#
#
# usage: sgclean.pl squidGuard.conf
#
# sgclean.pl removes redundant entries in domain files and url files
#
# although sgclean.pl makes a backup of the old files, it's always a
# good idea to make your own backup before running the program
#
# By  Lars Erik HÃ¥land 1999 (leh@nimrod.no)
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License (version 2) as
# published by the Free Software Foundation.  It 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 (GPL) for more details.
#  
# You should have received a copy of the GNU General Public License
# (GPL) along with this program.
#

use strict;

use DB_File;
use Fcntl;

my $VERSION = "1.0.0";

my $tmpfile = "/var/tmp/squidGuard.db";
my $tmpfile_delete = "/var/tmp/squidGuard.delete.db";
my $config = shift;

usage() if(!defined $config);

my $files = sg_config($config);

$| = 1;

for(keys %$files){
  sg_clean($_,$files->{$_});
}

sub sg_clean {
  my $file = shift;
  my $type = shift;
  print STDERR "cleaning $type $file\n";
  open(F,$file) || die "can't open $type file $file: $!";
  open(W,">$file.$$") || die "can't write to $file.$$: $!";
  sg_clean_dbfiles();
  my(%SG,%SGD);
  tie(%SG, 'DB_File',$tmpfile,O_RDWR|O_CREAT,0640,$DB_BTREE);
  tie(%SGD, 'DB_File',$tmpfile_delete,O_RDWR|O_CREAT,0640,$DB_BTREE);
  my $count = 1;
  my $i = 0;
  print STDERR "loading... ";
  while(<F>){
    chomp;
    my($url,$redirect) = split;
    $redirect = "" if(!defined $redirect);
    $SG{$url} = $redirect;
    $count++;
  }
  close(F);
  print STDERR "complete loading\n";
  print STDERR "cleaning";
  my($url,$redirect);
  while (($url,$redirect) = each %SG) {
    my $keep = undef;
    if($type eq "domainlist"){
      $keep = sg_clean_domain($url,\%SG,1);
    } elsif($type eq "urllist"){
      $keep = sg_clean_url($url,\%SG,1);
    }
    if(!defined $keep){
      $SGD{$url}++;
    }
    if($i % 100 == 0){
      my $p = ($i * 100)/$count;
      print STDERR "." if(int($p) % 10 == 0);
    }
    $i++;
  }
  print STDERR "complete cleaning\n";
  print STDERR "updating file";
  $i = 0;
  while (($url,$redirect) = each %SG) {
    next if(defined $SGD{$url});
    my $line = "$url" . ($redirect ? " $redirect\n" : "\n");
    print W "$line";
    if($i % 100 == 0){
      my $p = ($i * 100)/$count;
      print STDERR "." if(int($p) % 10 == 0);
    }
    $i++;
  }
  print "complete updating\n";
  close(W);
  sg_update_files($file);
  untie(%SG);
  untie(%SGD);
  sg_clean_dbfiles();
}

sub sg_clean_domain {
  my $domain = shift;
  my $tie = shift;
  my $exists_ok = shift;
  my $parts = [split(/[.]/,$domain)];
  my $d = "";
  for(reverse @$parts){
    $d = "$_$d";
    if(defined $tie->{$d}){
      if($domain eq $d){
        #print "$domain exists, skipping\n";
        return 1 if($exists_ok);
      } else {
        #print "$domain is subdomain of $d, skipping\n";
      }
      return undef;
    }
    $d = ".$d";
  }
  return 1;
}

sub sg_clean_url {
  my $url = shift;
  my $tie = shift;
  my $exists_ok = shift;
  my $parts = [split(/[\/]/,$url)];
  my $d = "";
  for(@$parts){
    $d = "$d$_";
    if(defined $tie->{$d}){
      if($url eq $d){
        #print "$url exists, skipping\n";
        return 1 if($exists_ok);
      } else {
        #print "$url is part of $d, skipping\n";
      }
      return undef;
    }
    $d = "$d/";
  }
  return 1;
}


sub sg_config {
  my $file = shift;
  open(F,$file) || die "can't open sgconfigfile $file: $!";
  my $dbhome = undef;
  my $dest = undef;
  my $files = {};
  while(<F>){
    chomp;
    if(/^\s*dbhome\s+(\S+)/){
      $dbhome = $1;
    }
    if(/^\s*(dest|destination)\s+(\S+)/){
      $dest = $2;
    }
    if(/^\s*(urllist|domainlist)\s+(\S+)/){
      my $type = $1;
      my $file = $2;
      if(!defined $dest){
        printf("Error in configfile line $.\n");
        next;
      }
      $file = "$dbhome/$file" if(defined $dbhome and $file !~ /^\//);
      $files->{$file}=$type;
    }
  }
  close(F);
  return $files;
}

sub sg_clean_dbfiles {
  if(-e "$tmpfile"){
    unlink("$tmpfile") || warn "can't remove $tmpfile: $!";
  }
  if(-e "$tmpfile_delete"){
    unlink("$tmpfile_delete")|| warn "can't remove $tmpfile_delete: $!";
  }
}

sub sg_update_files {
  my $file = shift;
  if(-e "$file"){
    system("cp $file $file.old");
  }
  if(-e "$file.$$"){
    rename("$file.$$",$file) || warn "can't rename $file.$$ to $file: $!";
  }
}

sub usage {
  print "Usage: $0 configfile\n";
  exit;
}