Compare.php at Network Configuration Store

<?php

require_once('./CS_Includes.inc.php');

$compareForm = null;

try {
	CS::Check($_GET['from'], CSA_EMPTY|CSA_THROW, 'DeviceCompare with no from_id');
	CS::Check($_GET['to'], CSA_EMPTY|CSA_THROW, 'DeviceCompare with no to_id');

	if ($_GET['to'] < 1)
		throw new CSCompareNoCurrException();
	if ($_GET['from'] < 1)
		throw new CSCompareNoPrevException();
	if ($_GET['from'] > $_GET['to'])
		throw new CSCompareBackwardException();

	//
	// Initialise our CSDevice and get the configuration data
	//
	$oldFile = new CSConfig($_GET['from']);
	$newFile = new CSConfig($_GET['to']);

	//
	// Build the differ
	//
	$differ = new CSFileDiff($oldFile, $newFile);
	$diffs =& $differ->getDifferences();

	//
	// Now build the info form
	//
	$compareForm = new CSForm('Compare.php');
	$compareForm->SetFormControlClass('FormControlAreaNoPad');

	// Check if we are in diffWin and load controls accordingly.
	//
	if (isset($_GET['diffwin']))
	{
		$compareForm->AddButton(new CSFormControl(CSF_BUTTON, array('value' => 'Close',
						'onclick' => 'window.close();')));
		$compareForm->AddButton(new CSFormControl(CSF_BUTTON, array('value' => 'Open NCS',
						'onclick' => 'window.location.href=\''.$CS->GetOption('url').'\';')));
	}
	else
	{
		$compareForm->AddButton(new CSFormControl(CSF_BUTTON, array('value' => 'Back',
						'onclick' => 'history.back(1);')));
		$compareForm->AddButton(new CSFormControl(CSF_BUTTON, array('value' => 'Open in New',
						'onclick' => 'openDiff(\''.$oldFile->revision_id.'\', \''.$newFile->revision_id.'\');')));
	}
}
catch (Exception $e) {
	CS::Abort($e);
}

CS::PrintHtmlHeader();

?>

<body id="Main">

	<a name="top"></a><h1>Compare Configuration on "<?php echo $oldFile->getParent()->hostname; ?>"</h1>
	<table id="Compare" width="300">
		<tr><td class="Rem">Removed Text</td><td class="RemEmpty">&nbsp;</td></tr>
		<tr><td class="Chg" colspan="2" align="center">Changed Text</td></tr>
		<tr><td class="AddEmpty">&nbsp;</td><td class="Add">Added Text</td></tr>
	</table>
	<?php $compareForm->InsertHtml(); ?>


	<?php if ($differ->FilesEqual()): ?>

		<p>Configuration revisions are equal!</p>

	<?php else: ?>

		<table id="Compare" width="100%">
			<tr class="Revision"><td>Revision <?php echo $oldFile->revision; ?> (<?php echo $oldFile->created; ?>)</td>
				<td>Revision <?php echo $newFile->revision; ?> (<?php echo $newFile->created; ?>)</td></tr>

<?php
			foreach($diffs as $diffHeader)
			{
				echo '<tr class="Header"><td>Line '.$diffHeader['oldline'].'</td>'.
					'<td>Line '.$diffHeader['newline'].'</td></tr>';

				$differ->InsertDifference($diffHeader);
			}
?>
		</table>

		<p><a href="#top">Top of Page</a></p>

	<?php endif; ?>

</body>
</html>