Files
bpfire/html/cgi-bin/dnsforward.cgi
Peter Müller 66c3619872 Early spring clean: Remove trailing whitespaces, and correct licence headers
Bumping across one of our scripts with very long trailing whitespaces, I
thought it might be a good idea to clean these up. Doing so, some
missing or inconsistent licence headers were fixed.

There is no need in shipping all these files en bloc, as their
functionality won't change.

Signed-off-by: Peter Müller <peter.mueller@ipfire.org>
2022-02-18 23:54:57 +00:00

408 lines
12 KiB
Perl

#!/usr/bin/perl
###############################################################################
# #
# IPFire.org - A linux based firewall #
# Copyright (C) 2013 IPFire Development Team #
# #
# This program is free software: you can redistribute it and/or modify #
# it under the terms of the GNU General Public License as published by #
# the Free Software Foundation, either version 3 of the License, or #
# (at your option) any later version. #
# #
# This program 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 for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with this program. If not, see <http://www.gnu.org/licenses/>. #
# #
###############################################################################
use strict;
# enable only the following on debugging purpose
#use warnings;
#use CGI::Carp 'fatalsToBrowser';
require '/var/ipfire/general-functions.pl';
require "${General::swroot}/lang.pl";
require "${General::swroot}/header.pl";
#workaround to suppress a warning when a variable is used only once
my @dummy = ( ${Header::colouryellow} );
undef (@dummy);
my %cgiparams=();
my %checked=();
my %selected=();
my $errormessage = '';
my $filename = "${General::swroot}/dnsforward/config";
my $changed = 'no';
my %color = ();
my %mainsettings = ();
&General::readhash("${General::swroot}/main/settings", \%mainsettings);
&General::readhash("/srv/web/ipfire/html/themes/ipfire/include/colors.txt", \%color);
&Header::showhttpheaders();
$cgiparams{'ENABLED'} = 'off';
$cgiparams{'ACTION'} = '';
$cgiparams{'ZONE'} = '';
$cgiparams{'FORWARD_SERVERS'} = '';
$cgiparams{'REMARK'} ='';
$cgiparams{'DISABLE_DNSSEC'} = 'off';
&Header::getcgihash(\%cgiparams);
open(FILE, $filename) or die 'Unable to open config file.';
my @current = <FILE>;
close(FILE);
###
# Add / Edit entries.
#
if ($cgiparams{'ACTION'} eq $Lang::tr{'add'})
{
# Check if the entered domainname is valid.
unless (&General::validdomainname($cgiparams{'ZONE'})) {
$errormessage = $Lang::tr{'invalid domain name'};
}
my @forward_servers = split(/\,/, $cgiparams{'FORWARD_SERVERS'});
foreach my $forward_server (@forward_servers) {
# Check if the settings for the forward server are valid.
unless(&General::validip($forward_server) || &General::validfqdn($forward_server)) {
$errormessage = "$Lang::tr{'invalid ip or hostname'}: $forward_server";
last;
}
}
if ($cgiparams{'DISABLE_DNSSEC'} !~ /^(on|off)?$/) {
$errormessage = $Lang::tr{'invalid input'};
}
# Go further if there was no error.
if ( ! $errormessage)
{
# Save servers separated by |
$cgiparams{'FORWARD_SERVERS'} = join("|", @forward_servers);
# Check if a remark has been entered.
$cgiparams{'REMARK'} = &Header::cleanhtml($cgiparams{'REMARK'});
# Set to off if not enabled
if (!$cgiparams{'DISABLE_DNSSEC'}) {
$cgiparams{'DISABLE_DNSSEC'} = "off";
}
# Check if we want to edit an existing or add a new entry.
if($cgiparams{'EDITING'} eq 'no') {
open(FILE,">>$filename") or die 'Unable to open config file.';
flock FILE, 2;
print FILE "$cgiparams{'ENABLED'},$cgiparams{'ZONE'},$cgiparams{'FORWARD_SERVERS'},$cgiparams{'REMARK'},$cgiparams{'DISABLE_DNSSEC'}\n";
} else {
open(FILE, ">$filename") or die 'Unable to open config file.';
flock FILE, 2;
my $id = 0;
foreach my $line (@current)
{
$id++;
if ($cgiparams{'EDITING'} eq $id) {
print FILE "$cgiparams{'ENABLED'},$cgiparams{'ZONE'},$cgiparams{'FORWARD_SERVERS'},$cgiparams{'REMARK'},$cgiparams{'DISABLE_DNSSEC'}\n";
} else { print FILE "$line"; }
}
}
close(FILE);
undef %cgiparams;
$changed = 'yes';
} else {
# stay on edit mode if an error occur
if ($cgiparams{'EDITING'} ne 'no')
{
$cgiparams{'ACTION'} = $Lang::tr{'edit'};
$cgiparams{'ID'} = $cgiparams{'EDITING'};
}
}
# Restart unbound
&General::system('/usr/local/bin/unboundctrl', 'reload');
}
###
# Remove existing entries.
#
if ($cgiparams{'ACTION'} eq $Lang::tr{'remove'})
{
my $id = 0;
open(FILE, ">$filename") or die 'Unable to open config file.';
flock FILE, 2;
foreach my $line (@current)
{
$id++;
unless ($cgiparams{'ID'} eq $id) { print FILE "$line"; }
}
close(FILE);
# Restart unbound.
&General::system('/usr/local/bin/unboundctrl', 'reload');
}
###
# Toggle Enable/Disable for entries.
#
if ($cgiparams{'ACTION'} eq $Lang::tr{'toggle enable disable'})
{
open(FILE, ">$filename") or die 'Unable to open config file.';
flock FILE, 2;
my $id = 0;
foreach my $line (@current)
{
$id++;
unless ($cgiparams{'ID'} eq $id) { print FILE "$line"; }
else
{
chomp($line);
my @temp = split(/\,/,$line);
$temp[0] = $cgiparams{'ENABLE'};
print FILE join(",", @temp) . "\n";
}
}
close(FILE);
# Restart unbound.
&General::system('/usr/local/bin/unboundctrl', 'reload');
}
###
# Read items for edit mode.
#
if ($cgiparams{'ACTION'} eq $Lang::tr{'edit'})
{
my $id = 0;
foreach my $line (@current)
{
$id++;
if ($cgiparams{'ID'} eq $id)
{
chomp($line);
my @temp = split(/\,/,$line);
$cgiparams{'ENABLED'} = $temp[0];
$cgiparams{'ZONE'} = $temp[1];
$cgiparams{'FORWARD_SERVERS'} = join(",", split(/\|/, $temp[2]));
$cgiparams{'REMARK'} = $temp[3];
$cgiparams{'DISABLE_DNSSEC'} = ($temp[4] eq "on") ? "on" : "off";
}
}
}
$checked{'ENABLED'}{'off'} = '';
$checked{'ENABLED'}{'on'} = '';
$checked{'ENABLED'}{$cgiparams{'ENABLED'}} = "checked='checked'";
$checked{'DISABLE_DNSSEC'}{'off'} = '';
$checked{'DISABLE_DNSSEC'}{'on'} = '';
$checked{'DISABLE_DNSSEC'}{$cgiparams{'DISABLE_DNSSEC'}} = "checked='checked'";
&Header::openpage($Lang::tr{'dnsforward configuration'}, 1, '');
&Header::openbigbox('100%', 'left', '', $errormessage);
###
# Error messages layout.
#
if ($errormessage) {
&Header::openbox('100%', 'left', $Lang::tr{'error messages'});
print "<class name='base'>$errormessage\n";
print "&nbsp;</class>\n";
&Header::closebox();
}
print "<form method='post' action='$ENV{'SCRIPT_NAME'}'>\n";
my $buttontext = $Lang::tr{'add'};
if ($cgiparams{'ACTION'} eq $Lang::tr{'edit'}) {
&Header::openbox('100%', 'left', $Lang::tr{'dnsforward edit an entry'});
$buttontext = $Lang::tr{'update'};
} else {
&Header::openbox('100%', 'left', $Lang::tr{'dnsforward add a new entry'});
}
###
# Content of the main page.
#
print <<END
<table width='100%'>
<tr>
<td width='20%' class='base'>$Lang::tr{'dnsforward zone'}:&nbsp;<img src='/blob.gif' alt='*' /></td>
<td><input type='text' name='ZONE' value='$cgiparams{'ZONE'}' size='24' /></td>
<td width='30%' class='base'>$Lang::tr{'enabled'}<input type='checkbox' name='ENABLED' $checked{'ENABLED'}{'on'} /></td>
</tr>
<tr>
<td width='20%' class='base'>$Lang::tr{'dnsforward forward_servers'}:&nbsp;<img src='/blob.gif' alt='*' /></td>
<td><input type='text' name='FORWARD_SERVERS' value='$cgiparams{'FORWARD_SERVERS'}' size='24' /></td>
</tr>
</table>
<table width='100%'>
<tr>
<td width ='20%' class='base'>$Lang::tr{'remark'}:</td>
<td><input type='text' name='REMARK' value='$cgiparams{'REMARK'}' size='40' maxlength='50' /></td>
</tr>
<tr>
<td width ='20%' class='base'>$Lang::tr{'dns forward disable dnssec'}:</td>
<td><input type='checkbox' name='DISABLE_DNSSEC' $checked{'DISABLE_DNSSEC'}{'on'} /></td>
</tr>
</table>
<br>
<hr>
<table width='100%'>
<tr>
<td class='base' width='55%'><img src='/blob.gif' alt ='*' align='top' />&nbsp;$Lang::tr{'required field'}</td>
<td width='40%' align='right'>
<input type='hidden' name='ACTION' value='$Lang::tr{'add'}' />
<input type='submit' name='SUBMIT' value='$buttontext' />
</td>
</tr>
</table>
END
;
if ($cgiparams{'ACTION'} eq $Lang::tr{'edit'}) {
print "<input type='hidden' name='EDITING' value='$cgiparams{'ID'}' />\n";
} else {
print "<input type='hidden' name='EDITING' value='no' />\n";
}
&Header::closebox();
print "</form>\n";
###
# Existing rules.
#
&Header::openbox('100%', 'left', $Lang::tr{'dnsforward entries'});
print <<END
<table width='100%' class='tbl'>
<tr>
<th width='35%' class='boldbase' align='center'><b>$Lang::tr{'dnsforward zone'}</b></th>
<th width='30%' class='boldbase' align='center'><b>$Lang::tr{'dnsforward forward_servers'}</b></th>
<th width='30%' class='boldbase' align='center'><b>$Lang::tr{'remark'}</b></th>
<th width='5%' class='boldbase' colspan='3' align='center'><b>$Lang::tr{'action'}</b></th>
</tr>
END
;
# If something has happened re-read config
if($cgiparams{'ACTION'} ne '' or $changed ne 'no')
{
open(FILE, $filename) or die 'Unable to open config file.';
@current = <FILE>;
close(FILE);
}
###
# Re-read entries and highlight selected item for editing.
#
my $id = 0;
my $col="";
foreach my $line (@current)
{
$id++;
chomp($line);
my @temp = split(/\,/,$line);
my $toggle = '';
my $gif = '';
my $gdesc = '';
my $toggle = '';
my $notice = "";
# Format lists of servers
my $servers = join(", ", split(/\|/, $temp[2]));
my $disable_dnssec = $temp[4];
if($cgiparams{'ACTION'} eq $Lang::tr{'edit'} && $cgiparams{'ID'} eq $id) {
print "<tr>";
$col="bgcolor='${Header::colouryellow}'"; }
elsif ($disable_dnssec eq 'on') {
print "<tr>";
$col="bgcolor='${Header::colourred}' style='color: white'"; }
elsif ($id % 2) {
print "<tr>";
$col="bgcolor='$color{'color22'}'"; }
else {
print "<tr>";
$col="bgcolor='$color{'color20'}'"; }
if ($temp[0] eq 'on') { $gif='on.gif'; $toggle='off'; $gdesc=$Lang::tr{'click to disable'};}
else { $gif='off.gif'; $toggle='on'; $gdesc=$Lang::tr{'click to enable'}; }
if ($disable_dnssec eq "on") {
$notice = $Lang::tr{'dns forwarding dnssec disabled notice'};
}
###
# Display edit page.
#
print <<END
<td align='center' $col>$temp[1] $notice</td>
<td align='center' $col>$servers</td>
<td align='center' $col>$temp[3]</td>
<td align='center' $col>
<form method='post' name='frma$id' action='$ENV{'SCRIPT_NAME'}'>
<input type='image' name='$Lang::tr{'toggle enable disable'}' src='/images/$gif' title='$gdesc' alt='$gdesc' />
<input type='hidden' name='ID' value='$id' />
<input type='hidden' name='ENABLE' value='$toggle' />
<input type='hidden' name='ACTION' value='$Lang::tr{'toggle enable disable'}' />
</form>
</td>
<td align='center' $col>
<form method='post' name='frmb$id' action='$ENV{'SCRIPT_NAME'}'>
<input type='image' name='$Lang::tr{'edit'}' src='/images/edit.gif' title='$Lang::tr{'edit'}' alt='$Lang::tr{'edit'}' />
<input type='hidden' name='ID' value='$id' />
<input type='hidden' name='ACTION' value='$Lang::tr{'edit'}' />
</form>
</td>
<td align='center' $col>
<form method='post' name='frmc$id' action='$ENV{'SCRIPT_NAME'}'>
<input type='image' name='$Lang::tr{'remove'}' src='/images/delete.gif' title='$Lang::tr{'remove'}' alt='$Lang::tr{'remove'}' />
<input type='hidden' name='ID' value='$id' />
<input type='hidden' name='ACTION' value='$Lang::tr{'remove'}' />
</form>
</td>
</tr>
END
;
}
print "</table>\n";
###
# Print the legend at the bottom if there are any configured entries.
#
# Check if the file size is zero - no existing entries.
if ( ! -z "$filename") {
print <<END
<table>
<tr>
<td class='boldbase'>&nbsp; <b>$Lang::tr{'legend'}:</b></td>
<td>&nbsp; <img src='/images/on.gif' alt='$Lang::tr{'click to disable'}' /></td>
<td class='base'>$Lang::tr{'click to disable'}</td>
<td>&nbsp; &nbsp; <img src='/images/off.gif' alt='$Lang::tr{'click to enable'}' /></td>
<td class='base'>$Lang::tr{'click to enable'}</td>
<td>&nbsp; &nbsp; <img src='/images/edit.gif' alt='$Lang::tr{'edit'}' /></td>
<td class='base'>$Lang::tr{'edit'}</td>
<td>&nbsp; &nbsp; <img src='/images/delete.gif' alt='$Lang::tr{'remove'}' /></td>
<td class='base'>$Lang::tr{'remove'}</td>
<td>&nbsp; &nbsp; <span style="background-color: $Header::colourred">&nbsp; &nbsp;</span></td>
<td class='base'>$Lang::tr{'dnsforward dnssec disabled'}</td>
</tr>
</table>
END
;
}
&Header::closebox();
&Header::closebigbox();
&Header::closepage();