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Commit a7e43fcc authored by Ad Schellevis's avatar Ad Schellevis
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(legacy) refactor diag_dns.php

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src/www/diag_dns.php
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<?php
/*
Copyright (C) 2014 Deciso B.V.
Copyright (C) 2009 Jim Pingle (jpingle@gmail.com)
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
Copyright (C) 2016 Deciso B.V.
Copyright (C) 2009 Jim Pingle (jpingle@gmail.com)
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
*/
require_once("guiconfig.inc");
$host = trim($_REQUEST['host'], " \t\n\r\0\x0B[];\"'");
$host_esc = escapeshellarg($host);
if (isset($config['aliases']['alias']) && is_array($config['aliases']['alias'])) {
$a_aliases = &$config['aliases']['alias'];
} else {
$a_aliases = array();
}
$aliasname = str_replace(array(".","-"), "_", $host);
$alias_exists = false;
$counter=0;
foreach($a_aliases as $a) {
if($a['name'] == $aliasname) {
$alias_exists = true;
$id=$counter;
}
$counter++;
}
if( ($_GET['host']) && ($_GET['dialog_output']) ) {
display_host_results($host,$resolved,$dns_speeds);
exit;
}
if(isset($_POST['create_alias']) && (is_hostname($host) || is_ipaddr($host))) {
if($_POST['override'])
$override = true;
$resolved = gethostbyname($host);
$type = "hostname";
if($resolved) {
$resolved = array();
exec("/usr/bin/drill {$host_esc} A | /usr/bin/grep {$host_esc} | /usr/bin/grep -v ';' | /usr/bin/awk '{ print $5 }'", $resolved);
$isfirst = true;
foreach($resolved as $re) {
if($re <> "") {
if(!$isfirst)
$addresses .= " ";
$addresses .= rtrim($re) . "/32";
$isfirst = false;
}
}
$newalias = array();
if($override)
$alias_exists = false;
if($alias_exists == false) {
$newalias['name'] = $aliasname;
$newalias['type'] = "network";
$newalias['address'] = $addresses;
$newalias['descr'] = gettext('Created from Diagnostics-> DNS Lookup');
if($override)
$a_aliases[$id] = $newalias;
else
$a_aliases[] = $newalias;
write_config();
$createdalias = true;
}
}
}
if ($_POST) {
unset($input_errors);
$reqdfields = explode(" ", "host");
$reqdfieldsn = explode(",", "Host");
do_input_validation($_POST, $reqdfields, $reqdfieldsn, $input_errors);
if (!is_hostname($host) && !is_ipaddr($host)) {
$input_errors[] = gettext("Host must be a valid hostname or IP address.");
} else {
// Test resolution speed of each DNS server.
$dns_speeds = array();
$dns_servers = array();
exec("/usr/bin/grep nameserver /etc/resolv.conf | /usr/bin/cut -f2 -d' '", $dns_servers);
foreach ($dns_servers as $dns_server) {
$query_time = exec("/usr/bin/drill {$host_esc} " . escapeshellarg("@" . trim($dns_server)) . " | /usr/bin/grep Query | /usr/bin/cut -d':' -f2");
if($query_time == "")
$query_time = gettext("No response");
$new_qt = array();
$new_qt['dns_server'] = $dns_server;
$new_qt['query_time'] = $query_time;
$dns_speeds[] = $new_qt;
unset($new_qt);
}
}
$type = "unknown";
$resolved = "";
$ipaddr = "";
$hostname = "";
if (!$input_errors) {
if (is_ipaddr($host)) {
$type = "ip";
$resolved = gethostbyaddr($host);
$ipaddr = $host;
if ($host != $resolved)
$hostname = $resolved;
} elseif (is_hostname($host)) {
$type = "hostname";
$resolved = gethostbyname($host);
if($resolved) {
$resolved = array();
exec("/usr/bin/drill {$host_esc} A | /usr/bin/grep {$host_esc} | /usr/bin/grep -v ';' | /usr/bin/awk '{ print $5 }'", $resolved);
}
$hostname = $host;
if ($host != $resolved)
$ipaddr = $resolved[0];
}
if ($host == $resolved) {
$resolved = gettext("No record found");
}
}
}
function display_host_results ($address,$hostname,$dns_speeds) {
$map_lengths = function($element) { return strlen($element[0]); };
echo gettext("IP Address") . ": {$address} \n";
echo gettext("Host Name") . ": {$hostname} \n";
echo "\n";
$text_table = array();
$text_table[] = array(gettext("Server"), gettext("Query Time"));
if (is_array($dns_speeds)) {
foreach ($dns_speeds as $qt) {
$text_table[] = array(trim($qt['dns_server']), trim($qt['query_time']));
}
}
$col0_padlength = max(array_map($map_lengths, $text_table)) + 4;
foreach ($text_table as $text_row) {
echo str_pad($text_row[0], $col0_padlength) . $text_row[1] . "\n";
}
$resolved = array();
$dns_speeds = array();
if (!empty($_REQUEST['host'])) {
$host = trim($_REQUEST['host'], " \t\n\r\0\x0B[];\"'");
$host_esc = escapeshellarg($host);
if (!is_hostname($host) && !is_ipaddr($host)) {
$input_errors[] = gettext("Host must be a valid hostname or IP address.");
} else {
// Test resolution speed of each DNS server.
$dns_servers = array();
exec("/usr/bin/grep nameserver /etc/resolv.conf | /usr/bin/cut -f2 -d' '", $dns_servers);
foreach ($dns_servers as $dns_server) {
$query_time = exec("/usr/bin/drill {$host_esc} " . escapeshellarg("@" . trim($dns_server)) . " | /usr/bin/grep Query | /usr/bin/cut -d':' -f2");
if ($query_time == "") {
$query_time = gettext("No response");
}
$dns_speeds[] = array('dns_server' => $dns_server, 'query_time' => $query_time);
}
}
$ipaddr = "";
if (count($input_errors) == 0) {
if (is_ipaddr($host)) {
$resolved[] = " " . gethostbyaddr($host); // add a space to provide an empty type field
$ipaddr = $host;
} elseif (is_hostname($host)) {
exec("/usr/bin/drill {$host_esc} A | /usr/bin/grep 'IN' | /usr/bin/grep -v ';' | /usr/bin/awk '{ print $4 \" \" $5 }'", $resolved);
$ipaddr = explode(" ", $resolved[count($resolved)-1])[1];
}
}
}
include("head.inc"); ?>
<body>
<?php include("fbegin.inc"); ?>
<section class="page-content-main">
<div class="container-fluid">
<div class="row">
<form action="<?=$_SERVER['REQUEST_URI'];?>" method="post" name="iform" id="iform">
<section class="col-xs-12">
<div class="content-box">
<?php if (isset($input_errors) && count($input_errors) > 0) print_input_errors($input_errors); ?>
<header class="content-box-head container-fluid">
<h3><?=gettext("Resolve DNS hostname or IP");?></h3>
</header>
<div class="content-box-main">
<div class="table-responsive">
<table class="table table-striped">
<tbody>
<tr>
<td><?=gettext("Hostname or IP");?></td>
<td><input name="host" type="text" class="form-control" id="host" size="20" value="<?=htmlspecialchars($host);?>" /></td>
<?php if ($resolved && $type): ?>
<td>
<?php
$found = 0;
if(is_array($resolved)) {
foreach($resolved as $hostitem) {
if($hostitem <> "") {
echo $hostitem . "<br />";
$found++;
}
}
} else {
echo $resolved;
}
?>
</td>
<td>
<?php if($found > 0): ?>
<?php if($alias_exists): ?>
<?= sprintf(gettext('An alias already exists for the hostname %s.'), htmlspecialchars($host)) ?>. <br />
<input type="hidden" name="override" value="true"/>
<input type="submit" class="btn btn-default" name="create_alias" value="Overwrite Alias"/>
<?php else: ?>
<?php if(!$createdalias): ?>
<input type="submit" class="btn btn-default" name="create_alias" value="Create Alias"/>
<?php else: ?>
<?= sprintf(gettext('Alias created with name %s.'), htmlspecialchars($newalias['name'])) ?>
<?php endif; endif; endif; ?>
</td>
<?php else: ?>
<td></td><td></td>
<?php endif; ?>
</tr>
<?php if (!empty($_POST)): ?>
<tr>
<td><?=gettext("Resolution time per server");?></td>
<td colspan="3">
<div class="container-fluid">
<div class="row">
<form method="post" name="iform" id="iform">
<section class="col-xs-12">
<div class="content-box">
<?php if (isset($input_errors) && count($input_errors) > 0) print_input_errors($input_errors); ?>
<header class="content-box-head container-fluid">
<h3><?=gettext("Resolve DNS hostname or IP");?></h3>
</header>
<div class="table-responsive">
<table class="table table-striped">
<tbody>
<tr>
<td><?=gettext("Hostname or IP");?></td>
<td>
<input name="host" type="text" value="<?=htmlspecialchars($host);?>" />
</td>
</tr>
<?php
if (count($resolved) > 0):?>
<tr>
<td><?=gettext("Response");?></td>
<td>
<table class="table table-striped table-condensed">
<tr>
<th><?=gettext("Type");?></th>
<th><?=gettext("Address");?></th>
</tr>
<?php
foreach($resolved as $hostitem):?>
<tr>
<td><?=explode(' ',$hostitem)[0];?></td>
<td><?=explode(' ',$hostitem)[1];?></td>
</tr>
<?php
endforeach;?>
</table>
</td>
</tr>
<tr>
<td><?=gettext("Resolution time per server");?></td>
<td colspan="2">
<table class="table table-striped table-condensed">
<tr>
<th><?=gettext("Server");?></th>
<th><?=gettext("Query time");?></th>
</tr>
<table class="table table-striped">
<tr>
<th><?=gettext("Server");?></th>
<th><?=gettext("Query time");?></th>
</tr>
<?php if(is_array($dns_speeds)): foreach($dns_speeds as $qt): ?>
<tr>
<td>
<?=$qt['dns_server']?>
</td>
<td>
<?=$qt['query_time']?>
</td>
</tr>
<?php endforeach; endif; ?>
</table>
</td>
</tr>
<?php endif; ?>
<?php if (!$input_errors && $ipaddr): ?>
<tr>
<td><?=gettext("More Information:");?></td>
<td colspan="3"><a href ="/diag_ping.php?host=<?=htmlspecialchars($host)?>&amp;interface=wan&amp;count=3"><?=gettext("Ping");?></a> <br />
<a href ="/diag_traceroute.php?host=<?=htmlspecialchars($host)?>&amp;ttl=18"><?=gettext("Traceroute");?></a>
<p>
<?=gettext("NOTE: The following links are to external services, so their reliability cannot be guaranteed.");?><br /><br />
<a target="_blank" href="http://private.dnsstuff.com/tools/whois.ch?ip=<?php echo $ipaddr; ?>"><?=gettext("IP WHOIS @ DNS Stuff");?></a><br />
<a target="_blank" href="http://private.dnsstuff.com/tools/ipall.ch?ip=<?php echo $ipaddr; ?>"><?=gettext("IP Info @ DNS Stuff");?></a>
</p>
</td>
</tr>
<?php endif; ?>
</tbody>
</table>
</div>
<div class="container-fluid">
<input type="submit" class="btn btn-primary btn-fixed pull-right" value="<?=gettext("DNS Lookup");?>" />
</div>
</div>
</div>
</section>
</form>
</div>
</div>
<?php
foreach($dns_speeds as $qt): ?>
<tr>
<td><?=$qt['dns_server']?></td>
<td><?=$qt['query_time']?></td>
</tr>
<?php
endforeach; ?>
</table>
</td>
</tr>
<?php
endif;
if (!empty($ipaddr)):?>
<tr>
<td><?=gettext("More Information:");?></td>
<td>
<a href ="/diag_ping.php?host=<?=htmlspecialchars($host)?>&amp;interface=wan&amp;count=3"><?=gettext("Ping");?></a> <br />
<a href ="/diag_traceroute.php?host=<?=htmlspecialchars($host)?>&amp;ttl=18"><?=gettext("Traceroute");?></a>
<p>
<?=gettext("NOTE: The following links are to external services, so their reliability cannot be guaranteed.");?><br /><br />
<a target="_blank" href="http://private.dnsstuff.com/tools/whois.ch?ip=<?=$ipaddr; ?>"><?=gettext("IP WHOIS @ DNS Stuff");?></a><br />
<a target="_blank" href="http://private.dnsstuff.com/tools/ipall.ch?ip=<?=$ipaddr; ?>"><?=gettext("IP Info @ DNS Stuff");?></a>
</p>
</td>
</tr>
<?php
endif; ?>
</tbody>
<tfoot>
<tr>
<td></td>
<td>
<input type="submit" class="btn btn-primary btn-fixed" value="<?=gettext("DNS Lookup");?>" />
</td>
</tr>
</tfoot>
</table>
</div>
</div>
</section>
</form>
</div>
</div>
</section>
<?php include("foot.inc"); ?>
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