ceae12b2bc97da3af78a52c6e5bb129f59cc0e30
[people/teissler/ipfire-2.x.git] / config / urlfilter / redirect_wrapper
1 #!/usr/bin/perl
2 ###############################################################################
3 # #
4 # IPFire.org - A linux based firewall #
5 # Copyright (C) 2007-2012 IPFire Team <info@ipfire.org> #
6 # #
7 # This program is free software: you can redistribute it and/or modify #
8 # it under the terms of the GNU General Public License as published by #
9 # the Free Software Foundation, either version 3 of the License, or #
10 # (at your option) any later version. #
11 # #
12 # This program is distributed in the hope that it will be useful, #
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of #
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
15 # GNU General Public License for more details. #
16 # #
17 # You should have received a copy of the GNU General Public License #
18 # along with this program. If not, see <http://www.gnu.org/licenses/>. #
19 # #
20 # Based on Steffen Schoch (sschoch@users.sourceforge.net) #
21 # #
22 ###############################################################################
23
24 use strict;
25 use IPC::Open2;
26 use IO::Handle;
27
28 my $redirectors;
29
30 require '/var/ipfire/general-functions.pl';
31
32 my %proxysettings=();
33 $proxysettings{'ENABLE_FILTER'} = 'off';
34 $proxysettings{'ENABLE_CLAMAV'} = 'off';
35 $proxysettings{'ENABLE_UPDXLRATOR'} = 'off';
36 &General::readhash("${General::swroot}/proxy/settings", \%proxysettings);
37
38 # define here your redirectors (use a comma sperated list)
39 if ( $proxysettings{'ENABLE_FILTER'} eq 'on' && $proxysettings{'ENABLE_CLAMAV'} eq 'on' && $proxysettings{'ENABLE_UPDXLRATOR'} eq 'on' ){$redirectors = [ '/usr/bin/squidGuard', '/usr/bin/squidclamav', '/usr/sbin/updxlrator' ];}
40 elsif ( $proxysettings{'ENABLE_FILTER'} eq 'on' && $proxysettings{'ENABLE_CLAMAV'} eq 'on' && $proxysettings{'ENABLE_UPDXLRATOR'} eq 'off' ){$redirectors = [ '/usr/bin/squidGuard', '/usr/bin/squidclamav' ];}
41 elsif ( $proxysettings{'ENABLE_FILTER'} eq 'on' && $proxysettings{'ENABLE_CLAMAV'} eq 'off' && $proxysettings{'ENABLE_UPDXLRATOR'} eq 'on' ){$redirectors = [ '/usr/bin/squidGuard', '/usr/sbin/updxlrator' ];}
42 elsif ( $proxysettings{'ENABLE_FILTER'} eq 'on' && $proxysettings{'ENABLE_CLAMAV'} eq 'off' && $proxysettings{'ENABLE_UPDXLRATOR'} eq 'off' ){$redirectors = [ '/usr/bin/squidGuard' ];}
43 elsif ( $proxysettings{'ENABLE_FILTER'} eq 'off' && $proxysettings{'ENABLE_CLAMAV'} eq 'on' && $proxysettings{'ENABLE_UPDXLRATOR'} eq 'on' ){$redirectors = [ '/usr/bin/squidclamav', '/usr/sbin/updxlrator' ];}
44 elsif ( $proxysettings{'ENABLE_FILTER'} eq 'off' && $proxysettings{'ENABLE_CLAMAV'} eq 'on' && $proxysettings{'ENABLE_UPDXLRATOR'} eq 'off' ){$redirectors = [ '/usr/bin/squidclamav' ];}
45 elsif ( $proxysettings{'ENABLE_FILTER'} eq 'off' && $proxysettings{'ENABLE_CLAMAV'} eq 'off' && $proxysettings{'ENABLE_UPDXLRATOR'} eq 'on' ){$redirectors = [ '/usr/sbin/updxlrator' ];}
46 else { $redirectors = [ '/usr/bin/squidGuard', '/usr/sbin/updxlrator' ];}
47
48 # Attention: keep in mind that the order of your redirectors is important.
49 # It doesn't make sense to scan for viruses on pages you restrict access to...
50 # So place first your tools which restrict access, then the tools which do the
51 # content filtering!
52
53 ##### no need to change anything below this line #####
54
55 # init
56 $| = 1;
57 STDOUT->autoflush(1);
58 my $line;
59 my $return;
60 my $i;
61 my $debug=0; # enable only for debugging
62
63 if ( -e "/var/ipfire/proxy/enable_redirector_debug" ){
64 $debug = 1;
65 writetolog("Urlfilter = ".$proxysettings{'ENABLE_FILTER'}." Clamav = ".$proxysettings{'ENABLE_CLAMAV'}." Updxlrator = ".$proxysettings{'ENABLE_UPDXLRATOR'});
66 }
67
68 # open progamms
69 my $pidlist = [];
70 my $rlist = [];
71 my $wlist = [];
72
73 for($i = 0; $i < @$redirectors; $i++) {
74 $pidlist->[$i] = open2($rlist->[$i], $wlist->[$i], $redirectors->[$i]);
75 if ($debug){
76 writetolog("Current redirector is ".$redirectors->[$i]." number ".$i." PID ".$pidlist->[$i]);
77 }
78 }
79
80 # wait for data...
81 while($line = <>) {
82 $return = "";
83
84 for($i = 0; $i < @$redirectors; $i++) {
85 $wlist->[$i]->print($line);
86 $return = $rlist->[$i]->getline;
87
88 if ( $return eq "Processing file and database" ){
89 system("logger -t ipfire 'Emergency - squidGuard not initialised please run squidGuard -C all'");
90 }
91
92 if ($debug){
93 my $dline = $line;my $dreturn = $return;chomp $dline;chomp $dreturn;
94 if ( $return eq $line or $return eq "\n" or $return eq "" ){
95 writetolog("Request equals result by ".$redirectors->[$i]." ".$dline);
96 }
97 else {
98 writetolog($redirectors->[$i]." answers ".$dreturn."\n Querried ".$dline);
99 }
100 }
101
102 # break if redirector changes data
103 if($return ne "\n" and $return ne $line ){
104 if ( $redirectors->[$i] ne "/usr/sbin/updxlrator"){
105 if ($debug){
106 writetolog($redirectors->[$i]." is stopping querry because block was found.");
107 }
108 $i = @$redirectors;
109 }
110 }
111 }
112 print $return;
113 }
114
115 exit 0;
116
117 sub writetolog {
118 open(DATEI, ">>/var/log/squid/redirector_debug") || die "Unable to acces file /var/log/squid/redirector_debug";
119 my $log = shift;
120 print DATEI $log."\n";
121 close(DATEI);
122 }