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https://github.com/casjaysdevdocker/squidguard
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➕ Added: data/htdocs/cgi-bin/blocked ➕
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Jason
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396
data/htdocs/cgi-bin/blocked
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396
data/htdocs/cgi-bin/blocked
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#! /usr/bin/perl
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#
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# Explain to the user that the URL is blocked and by which rule set
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#
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# Original by P<>l Baltzersen 1999 (pal.baltzersen@ost.eltele.no)
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# French texts thanks to Fabrice Prigent (fabrice.prigent@univ-tlse1.fr)
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# Dutch texts thanks to Anneke Sicherer-Roetman (sicherer@sichemsoft.nl)
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# German texts thanks to Buergernetz Pfaffenhofen (http://www.bn-paf.de/filter/)
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# Spanish texts thanks to Samuel García).
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# Rewrite by Christine Kronberg, 2008, to enable an easier integration of
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# other languages.
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#
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# By accepting this notice, you agree to be bound by the following
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# agreements:
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#
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# This software product, squidGuard, is copyrighted (C) 1998-2008
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# by Christine Kronberg, Shalla Secure Services. All rights reserved.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License (version 2) as
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# published by the Free Software Foundation. It is distributed in the
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# hope that it will be useful, but WITHOUT ANY WARRANTY; without even
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# the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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# PURPOSE. See the GNU General Public License (GPL) for more details.
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#
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# You should have received a copy of the GNU General Public License
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# (GPL) along with this program.
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use strict;
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use Socket;
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#
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# GLOBAL VALUES:
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#
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my ($clientaddr,$clientname,$clientuser,$clientgroup,$targetgroup,$url);
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my (@supported,$image,$redirect,$autoinaddr,$proxy,$proxymaster);
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my $lang="en";
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my (%msgconf,%title,%logo,%msg,%tab,%word);
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my ($protocol,$address,$port,$path,$refererhost,$referer);
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my %Babel = ();
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my $rechts="";
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my $links="";
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my $dummy="";
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sub getpreferedlang(@);
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sub parsequery($);
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sub status($);
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sub redirect($);
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sub content($);
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sub expires($);
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sub msg($$);
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sub gethostnames($);
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sub spliturl($);
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sub showhtml($);
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sub showimage($$$);
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sub showinaddr($$$$$);
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#
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# CONFIGURABLE OPTIONS:
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#
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# (Currently: "en", "fr", "de", "es", "nl", "no")
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@supported = (
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"en (English), ",
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"fr (Fran<61>ais), ",
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"de (Deutsch), ",
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"es (Espa<70>ol), ",
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"nl (Nederlands), ",
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"no (Norsk)."
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);
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#
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# Modifiy the values below to reflect you environment
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# The image you define with "$image" and redirect will be displayed if the unappropriate
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# url is of the type: gif, jpg, jpeg, png, mp3, mpg, mpeg, avi or mov.
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#
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$image = "/images/blocked.png"; # RELATIVE TO DOCUMENT_ROOT
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$redirect = "http://admin.your-domain/images/blocked.png"; # "" TO AVOID REDIRECTION
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$proxy = "proxy.your-domain"; # Your proxy server
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$proxymaster = "operator\@your-domain"; # The email of your proxy adminstrator
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$autoinaddr = 2; # 0|1|2;
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# 0 TO NOT REDIRECT
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# 1 TO AUTORESOLVE & REDIRECT IF UNIQUE
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# 2 TO AUTORESOLVE & REDIRECT TO FIRST NAME
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# You may wish to enter your company link and logo to be displayed on the page
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my $company = " ";
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my $companylogo = " ";
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my $squidguard = "http://www.squidguard.org";
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my $squidguardlogo = "http://www.squidguard.org/Logos/squidGuard.gif";
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########################################################################################
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#
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# SUBROUTINES:
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#
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#
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# RETURN THE FIRST SUPPORTED LANGUAGE OF THE BROWSERS PREFERRED OR THE
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# DEFAULT:
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#
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sub getpreferedlang(@) {
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my @supported = @_;
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my @languages = split(/\s*,\s*/,$ENV{"HTTP_ACCEPT_LANGUAGE"}) if(defined($ENV{"HTTP_ACCEPT_LANGUAGE"}));
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my $lang;
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my $supp;
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push(@languages,$supported[0]);
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for $lang (@languages) {
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$lang =~ s/\s.*//;
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$lang = substr($lang,0,2);
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for $supp (@supported) {
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$supp =~ s/\s.*//;
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return($lang) if ($lang eq $supp);
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}
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}
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}
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#
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# PARSE THE QUERY_STRING FOR KNOWN KEYS:
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#
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sub parsequery($) {
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my $query = shift;
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my $clientaddr = "$Babel{Unknown}";
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my $clientname = "$Babel{Unknown}";
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my $clientuser = "$Babel{Unknown}";
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my $clientgroup = "$Babel{Unknown}";
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my $targetgroup = "$Babel{Unknown}";
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my $url = "$Babel{Unknown}";
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if (defined($query)) {
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while ($query =~ /^\&?([^\&=]+)=\"([^\"]*)\"(.*)/ || $query =~ /^\&?([^\&=]+)=([^\&=]*)(.*)/) {
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my $key = $1;
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my $value = $2;
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$value = "$Babel{Unknown}" unless(defined($value) && $value && $value ne "unknown");
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$query = $3;
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if ($key =~ /^(clientaddr|clientname|clientuser|clientgroup|targetgroup|url)$/) {
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eval "\$$key = \$value";
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}
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if ($query =~ /^url=(.*)/) {
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$url = $1;
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last;
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}
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}
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}
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return($clientaddr,$clientname,$clientuser,$clientgroup,$targetgroup,$url);
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}
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#
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# PRINT HTTP STATUS HEARER:
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#
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sub status($) {
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my $status = shift;
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print "Status: $status\n";
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}
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#
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# PRINT HTTP LOCATION HEARER:
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#
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sub redirect($) {
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my $location = shift;
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print "Location: $location\n";
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}
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#
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# PRINT HTTP CONTENT-TYPE HEARER:
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#
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sub content($) {
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my $contenttype = shift;
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print "Content-Type: $contenttype\n";
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}
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#
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# PRINT HTTP LAST-MODIFIED AND EXPIRES HEADER:
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#
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sub expires($) {
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my $ttl = shift;
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my $time = time;
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my @day = ("Sun","Mon","Tue","Wed","Thu","Fri","Sat");
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my @month = ("Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec");
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my ($sec,$min,$hour,$mday,$mon,$year,$wday) = gmtime($time);
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printf "Last-Modified: %s, %d %s %d", $day[$wday],$mday,$month[$mon],$year+1900;
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printf " %02d:%02d:%02d GMT\n", $hour,$min,$sec;
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($sec,$min,$hour,$mday,$mon,$year,$wday) = gmtime($time+$ttl);
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printf "Expires: %s, %d %s %d", $day[$wday],$mday,$month[$mon],$year+1900;
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printf " %02d:%02d:%02d GMT\n", $hour,$min,$sec;
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}
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#
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# REVERSE LOOKUP AND RETURN NAMES:
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#
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sub gethostnames($) {
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my $address = shift;
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my ($name,$aliases) = gethostbyaddr(inet_aton($address), AF_INET);
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my @names;
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if (defined($name)) {
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push(@names,$name);
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if (defined($aliases) && $aliases) {
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for(split(/\s+/,$aliases)) {
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next unless(/\./);
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push(@names,$_);
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}
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}
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}
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return(@names);
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}
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#
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# SPLIT AN URL INTO PROTOCOL, ADDRESS, PORT AND PATH:
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#
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sub spliturl($) {
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my $url = shift;
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my $protocol = "";
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my $address = "";
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my $port = "";
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my $path = "";
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$url =~ /^([^\/:]+):\/\/([^\/:]+)(:\d*)?(.*)/;
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$protocol = $1 if(defined($1));
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$address = $2 if(defined($2));
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$port = $3 if(defined($3));
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$path = $4 if(defined($4));
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return($protocol,$address,$port,$path);
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}
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#
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# SEND OUT AN IMAGE:
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#
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sub showimage($$$) {
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my ($type,$file,$redirect) = @_;
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content("image/$type");
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expires(300);
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redirect($redirect) if($redirect);
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print "\n";
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open(GIF, "$ENV{\"DOCUMENT_ROOT\"}$file");
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print <GIF>;
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close(GIF)
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}
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#
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# SHOW THE INADDR ALERNATIVES WITH OPTIONAL ATOREDIRECT:
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#
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sub showinaddr($$$$$) {
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my ($targetgroup,$protocol,$address,$port,$path) = @_;
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my $msgid = $targetgroup;
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my @names = gethostnames($address);
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if($autoinaddr == 2 && @names || $autoinaddr && @names==1) {
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status("301 Moved Permanently");
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redirect("$protocol://$names[0]$port$path");
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} elsif (@names>1) {
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status("300 Multiple Choices");
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} elsif (@names) {
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status("301 Moved Permanently");
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} else {
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status("404 Not Found");
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}
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if (@names) {
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print "Content-type: text/html\n\n";
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print "<!DOCTYPE html PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\" \"http://www.w3.org/TR/REC-html40/loose.dtd\">\n";
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print "<html><head>\n";
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print "<title>$Babel{Title}</title>\n";
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print "<link rel=\"stylesheet\" type=\"text/css\" href=\"/css/proxy.css\">\n";
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print "</head>\n";
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print "<body> \n";
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expires(0);
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$msgid = "in-addr" unless(defined($msgconf{$msgid}));
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if (defined($msgconf{$msgid})) {
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print " <!-- showinaddr(\"$msgid\") -->\n";
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for (@{$msgconf{$msgid}}) {
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my @config = split(/:/);
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my $type = shift(@config);
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if ($type eq "msg") {
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msg($config[0],$config[1]);
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} elsif ($type eq "tab") {
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table(shift(@config),shift(@config),@config);
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} elsif ($type eq "alternatives") {
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print " <TABLE BORDER=0 ALIGN=CENTER>\n";
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for (@names) {
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print " <TR>\n <TH ALIGN=LEFT>\n <FONT SIZE=+1>";
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href("$protocol://$_$port$path");
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print "\n </FONT>\n </TH>\n </TR>\n";
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}
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print " </TABLE>\n\n";
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if (defined($ENV{"HTTP_REFERER"}) && $ENV{"HTTP_REFERER"} =~ /:\/\/([^\/:]+)/) {
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$refererhost = $1;
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$referer = $ENV{"HTTP_REFERER"};
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msg("H4","referermaster");
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}
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}
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}
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}
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}
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return;
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}
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########################################################################################
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#
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# MAIN PROGRAM
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#
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# To change the messages in the blocked page please refer to the corresponding babel file.
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#
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$lang = getpreferedlang(@supported);
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open (BABEL, "babel.$lang") || warn "Unable to open language file: $!\n";
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flock (BABEL, 2);
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while (<BABEL>) {
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chomp $_ ;
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($links, $rechts) = split (/=/, $_);
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$Babel{$links} = $rechts;
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}
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flock (BABEL, 8);
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close (BABEL);
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($clientaddr,$clientname,$clientuser,$clientgroup,$targetgroup,$url) = parsequery($ENV{"QUERY_STRING"});
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($protocol,$address,$port,$path) = spliturl($url);
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if ($url =~ /\.(gif|jpg|jpeg|png|mp3|mpg|mpeg|avi|mov)$/i) {
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status("403 Forbidden");
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showimage("gif",$image,$redirect);
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exit 0;
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}
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if ($targetgroup eq "in-addr") {
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showinaddr($targetgroup,$protocol,$address,$port,$path);
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}
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status("403 Forbidden");
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expires(0);
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print "Content-type: text/html\n\n";
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print "<!DOCTYPE html PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\" \"http://www.w3.org/TR/REC-html40/loose.dtd\">\n";
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print "<html><head>\n";
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print "<title>$Babel{Title}</title>\n";
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print "<link rel=\"stylesheet\" type=\"text/css\" href=\"/css/proxy.css\">\n";
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print "</head>\n";
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print "<body> \n";
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print "\n";
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print "<a href=$company>\n";
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print "<img align=left border=0 alt=\"\" src=$companylogo></a>\n";
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print "<a href=$squidguard>\n";
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print "<img align=right border=0 alt=\"\" src=$squidguardlogo></a><br><br>\n";
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print "<center>\n";
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print "<table border=0 width=80%>\n";
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print "<tr><td align=center>\n";
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print "<h2>$Babel{Msg}</h2>\n";
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print "<br><br>\n";
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print "<b>$Babel{Tabcaption}</b><br><br>\n";
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print "<table border=4>\n";
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print "<tr>\n";
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print "<td>$Babel{TabIP}</td><td> $clientaddr</td>\n";
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print "</tr>\n";
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print "<tr>\n";
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print "<td>$Babel{Tabclientname}</td><td> $clientname</td>\n";
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print "</tr>\n";
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print "<tr>\n";
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print "<td>$Babel{Tabclientuser}</td><td> $clientuser</td>\n";
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print "</tr>\n";
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print "<tr>\n";
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print "<td>$Babel{Tabclientgroup}</td><td> $clientgroup</td>\n";
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print "</tr>\n";
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print "<tr>\n";
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print "<td>$Babel{Taburl}</td><td> $url</td>\n";
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print "</tr>\n";
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print "<tr>\n";
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print "<td>$Babel{Tabtargetgroup}</td><td> $targetgroup</td>\n";
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print "</tr>\n";
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print "</table>\n";
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print "<br><br>\n";
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print "</td></tr>\n";
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print "<tr><td>\n";
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if ($targetgroup eq "in-addr") {
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print "$Babel{msginaddr}<br><br>\n";
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print "$Babel{msgnoalternatives} <U>",$address,"</U>.<br>\n";
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print "$Babel{msgwebmaster}\n";
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}
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print "<br><br>\n";
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print "$Babel{msgproxymaster} <A HREF=mailto:$proxymaster>$proxymaster</A>.<br>\n";
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print "$Babel{msgrefresh}\n";
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print "</td></tr></table>\n";
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# bottom of page
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print "</center>\n";
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print "<br><br>\n";
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print "<hr>\n";
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print "<font size=-1>\n";
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print "$Babel{msgdeflang} ",@supported, "\n";
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print "</font>\n";
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print "</body></html>\n";
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exit 0 ;
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