/usr/bin/sgclean is in squidguard 1.5-4.
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;
}
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