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<?php
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/*
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diag_dns.php
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Copyright (C) 2009 Jim Pingle (jpingle@gmail.com)
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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$pgtitle = "Diagnostics: DNS";
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require("guiconfig.inc");
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/* Cheap hack to support both $_GET and $_POST */
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if ($_GET['host'])
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$_POST = $_GET;
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if ($_POST) {
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unset($input_errors);
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$reqdfields = explode(" ", "host");
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$reqdfieldsn = explode(",", "Host");
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do_input_validation($_POST, $reqdfields, $reqdfieldsn, &$input_errors);
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$host = trim($_POST['host']);
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if (!(is_hostname($host) || is_ipaddr($host))) {
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$input_errors[] = "Host must be a valid hostname or IP address.";
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}
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$type = "unknown";
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$resolved = "";
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$ipaddr = "";
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$hostname = "";
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if (!$input_errors) {
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if (is_ipaddr($host)) {
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$type = "ip";
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$resolved = gethostbyaddr($host);
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$ipaddr = $host;
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if ($host != $resolved)
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$hostname = $resolved;
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} elseif (is_hostname($host)) {
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$type = "hostname";
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$resolved = gethostbyname($host);
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$hostname = $host;
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if ($host != $resolved)
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$ipaddr = $resolved;
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}
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if ($host == $resolved) {
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$resolved = "No record found";
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}
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}
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}
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include("head.inc"); ?>
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<body link="#000000" vlink="#000000" alink="#000000">
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<? include("fbegin.inc"); ?>
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<table width="100%" border="0" cellpadding="0" cellspacing="0">
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<tr>
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<td>
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<?php if ($input_errors) print_input_errors($input_errors); ?>
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<form action="diag_dns.php" method="post" name="iform" id="iform">
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<table width="100%" border="0" cellpadding="6" cellspacing="0">
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<tr>
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<td width="22%" valign="top" class="vncellreq">Hostname or IP</td>
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<td width="78%" class="vtable">
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<?=$mandfldhtml;?><input name="host" type="text" class="formfld" id="host" size="20" value="<?=htmlspecialchars($host);?>">
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<? if ($resolved && $type) { ?>
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= <?php echo $resolved; ?>
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<? } ?>
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</td>
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</tr>
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<?php if (!$input_errors && $ipaddr) { ?>
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<tr>
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<td width="22%" valign="top">More Information:</td>
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<td width="78%" class="vtable">
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NOTE: These links are to external services, so their reliability cannot be guaranteed.<br/><br/>
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<a href="http://private.dnsstuff.com/tools/whois.ch?ip=<?php echo $ipaddr; ?>">IP WHOIS @ DNS Stuff</a><br />
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<a href="http://private.dnsstuff.com/tools/ipall.ch?ip=<?php echo $ipaddr; ?>">IP Info @ DNS Stuff</a>
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</td>
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</tr>
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<?php } ?>
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<tr>
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<td width="22%" valign="top"> </td>
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<td width="78%">
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<input name="Submit" type="submit" class="formbtn" value="DNS Lookup">
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</td>
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</tr>
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</table>
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</form>
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</td></tr></table>
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<?php include("fend.inc"); ?>
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