html/html/redirect.cgi

   1 #!/usr/bin/perl
   2 ###############################################################################
   3 #                                                                             #
   4 # IPFire.org - A linux based firewall                                         #
   5 # Copyright (C) 2007  Michael Tremer & Christian Schmidt                      #
   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 ###############################################################################
  21
  22 use CGI;
  23 use HTML::Entities;
  24 use HTML::Template;
  25
  26 my $swroot="/var/ipfire";
  27 my $templateroot = "/srv/web/ipfire/html/redirect-templates";
  28
  29 my %netsettings;
  30 my %filtersettings;
  31
  32 &readhash("$swroot/ethernet/settings", \%netsettings);
  33 &readhash("$swroot/urlfilter/settings", \%filtersettings);
  34
  35 # Read the template file.
  36 my $template = $filtersettings{'REDIRECT_TEMPLATE'};
  37 if (($template eq '') || (! -e "$templateroot/$template")) {
  38         $template = "legacy";
  39 }
  40 my $tmpl = HTML::Template->new(
  41         filename => "$templateroot/$template/template.html",
  42         die_on_bad_params => 0
  43 );
  44
  45 # Address where to load more resources from.
  46 $tmpl->param(ADDRESS => "http://$netsettings{'GREEN_ADDRESS'}:81");
  47
  48 # Message text 1
  49 my $msgtext1 = $filtersettings{'MSG_TEXT_1'};
  50 if ($msgtext1 eq '') {
  51         $msgtext1 = "A C C E S S &nbsp;&nbsp; D E N I E D";
  52 }
  53 $tmpl->param(MSG_TEXT_1 => $msgtext1);
  54
  55 # Message text 2
  56 my $msgtext2 = $filtersettings{'MSG_TEXT_2'};
  57 if ($msgtext2 eq '') {
  58         $msgtext2 = "Access to the requested page has been denied";
  59 }
  60 $tmpl->param(MSG_TEXT_2 => $msgtext2);
  61
  62 # Message text 3
  63 my $msgtext3 = $filtersettings{'MSG_TEXT_3'};
  64 if ($msgtext3 eq '') {
  65         $msgtext3 = "Please contact the Network Administrator if you think there has been an error";
  66 }
  67 $tmpl->param(MSG_TEXT_3 => $msgtext3);
  68
  69 # Category
  70 my $category = CGI::param("category");
  71 $tmpl->param(CATEGORY => &escape($category));
  72
  73 # URL
  74 my $url = CGI::param("url");
  75 $tmpl->param(URL => &escape($url));
  76
  77 # IP address
  78 my $ip_address = CGI::param("ip");
  79 $tmpl->param(IP_ADDRESS => &escape($ip_address));
  80
  81 # Print header
  82 print "Pragma: no-cache\n";
  83 print "Cache-control: no-cache\n";
  84 print "Connection: close\n";
  85 print "Content-type: text/html\n\n";
  86 print $tmpl->output;
  87
  88 sub escape($) {
  89         my $s = shift;
  90         return HTML::Entities::encode_entities($s);
  91 }
  92
  93 sub readhash {
  94         my $filename = $_[0];
  95         my $hash = $_[1];
  96         my ($var, $val);
  97
  98         if (-e $filename) {
  99                 open(FILE, $filename) or die "Unable to read file $filename";
 100                 while (<FILE>) {
 101                         chop;
 102                         ($var, $val) = split /=/, $_, 2;
 103                         if ($var) {
 104                                 $val =~ s/^\'//g;
 105                                 $val =~ s/\'$//g;
 106
 107                                 # Untaint variables read from hash
 108                                 $var =~ /([A-Za-z0-9_-]*)/;        $var = $1;
 109                                 $val =~ /([\w\W]*)/; $val = $1;
 110                                 $hash->{$var} = $val;
 111                         }
 112                 }
 113
 114                 close FILE;
 115         }
 116 }