From 0dec060543e33be3fad29d6edc54bb98ad24b19d Mon Sep 17 00:00:00 2001
From: FusionPBX <markjcrane@gmail.com>
Date: Mon, 8 Jul 2019 22:32:50 -0600
Subject: [PATCH] Update filenew.php

---
 app/edit/filenew.php | 135 +++++++++++++++++++++++++------------------
 1 file changed, 79 insertions(+), 56 deletions(-)

diff --git a/app/edit/filenew.php b/app/edit/filenew.php
index 6f93a3a8c2..5b151ac2ae 100644
--- a/app/edit/filenew.php
+++ b/app/edit/filenew.php
@@ -17,78 +17,101 @@
 
 	The Initial Developer of the Original Code is
 	Mark J Crane <markjcrane@fusionpbx.com>
-	Portions created by the Initial Developer are Copyright (C) 2008-2012
+	Portions created by the Initial Developer are Copyright (C) 2008-2019
 	the Initial Developer. All Rights Reserved.
 
 	Contributor(s):
 	Mark J Crane <markjcrane@fusionpbx.com>
 	James Rose <james.o.rose@gmail.com>
 */
-include "root.php";
-require_once "resources/require.php";
-require_once "resources/check_auth.php";
-if (permission_exists('script_editor_save')) {
-	//access granted
-}
-else {
-	echo "access denied";
-	exit;
-}
+
+//includes
+	include "root.php";
+	require_once "resources/require.php";
+	require_once "resources/check_auth.php";
+
+//check permissions
+	if (permission_exists('script_editor_save')) {
+		//access granted
+	}
+	else {
+		echo "access denied";
+		exit;
+	}
 
 //add multi-lingual support
 	$language = new text;
 	$text = $language->get();
 
-$folder = $_GET["folder"];
-$folder = str_replace ("\\", "/", $folder);
-if (substr($folder, -1) != "/") { $folder = $folder.'/'; }
-$file = $_GET["file"];
+//handle the directory and file
+	$folder = $_REQUEST["folder"];
+	$folder = str_replace ("\\", "/", $folder);
+	if (substr($folder, -1) != "/") { $folder = $folder.'/'; }
+	$file = $_REQUEST["file"];
 
-if (strlen($folder) > 0 && strlen($file) > 0) {
-	//create new file
-	$handle = fopen($folder.$file, 'wb') or die("Error!!");
-	$content = "<?php\n\n?>";
-	fwrite($handle, $content);
-	fclose($handle);
-	header("Location: fileoptions.php");
-}
-else {
-	require_once "header.php";
+//write the file or show the html form
+	if (strlen($folder) > 0 && strlen($file) > 0) {
+		//compare the tokens
+		$key_name = '/app/edit/file_new';
+		$hash = hash_hmac('sha256', $key_name, $_SESSION['keys'][$key_name]);
+		if (!hash_equals($hash, $_POST['token'])) {
+			echo "access denied";
+			exit;
+		}
 
-	echo "<br>";
-	echo "<div align='left'>";
-	echo "<form method='get' action=''>";
-	echo "<table>";
-	echo "	<tr>";
-	echo "		<td>Path:</td>";
-	echo "	</tr>";
-	echo "	<tr>";
-	echo "		<td>".$folder.$file."</td>";
-	echo "	</tr>";
-	echo "</table>";
+		//create new file
+		$handle = fopen($folder.$file, 'wb') or die("Error!!");
+		$content = "<?php\n\n?>";
+		fwrite($handle, $content);
+		fclose($handle);
+		header("Location: fileoptions.php");
+	}
+	else {
 
-	echo "<br />";
+		//create a token
+		$key_name = '/app/edit/file_new';
+		$_SESSION['keys'][$key_name] = bin2hex(random_bytes(32));
+		$_SESSION['token'] = hash_hmac('sha256', $key_name, $_SESSION['keys'][$key_name]);
 
-	echo "<table>";
-	echo "	<tr>";
-	echo "	  <td>".$text['label-file-name']."</td>";
-	echo "	</tr>";
+		//include the header
+		require_once "header.php";
 
-	echo "	<tr>";
-	echo "		<td><input type='text' name='file' value=''></td>";
-	echo "	</tr>";
+		//show the content
+		echo "<br>";
+		echo "<div align='left'>";
+		echo "<form method='POST' action=''>";
+		echo "<table>";
+		echo "	<tr>";
+		echo "		<td>Path:</td>";
+		echo "	</tr>";
+		echo "	<tr>";
+		echo "		<td>".$folder.$file."</td>";
+		echo "	</tr>";
+		echo "</table>";
 
-	echo "	<tr>";
-	echo "		<td colspan='1' align='right'>";
-	echo "			<input type='hidden' name='folder' value='$folder'>";
-	echo "			<input type='button' value='".$text['button-back']."' onclick='history.back()'><input type='submit' value='".$text['button-new-file']."'>";
-	echo "		</td>";
-	echo "	</tr>";
-	echo "</table>";
-	echo "</form>";
-	echo "</div>";
+		echo "<br />";
 
-	require_once "footer.php";
-}
+		echo "<table>";
+		echo "	<tr>";
+		echo "	  <td>".$text['label-file-name']."</td>";
+		echo "	</tr>";
 
-?>
\ No newline at end of file
+		echo "	<tr>";
+		echo "		<td><input type='text' name='file' value=''></td>";
+		echo "	</tr>";
+
+		echo "	<tr>";
+		echo "		<td colspan='1' align='right'>";
+		echo "			<input type='hidden' name='folder' value='$folder'>";
+		echo "			<input type='hidden' name='token' id='token' value='". $_SESSION['token']. "'>";
+		echo "			<input type='button' value='".$text['button-back']."' onclick='history.back()'><input type='submit' value='".$text['button-new-file']."'>";
+		echo "		</td>";
+		echo "	</tr>";
+		echo "</table>";
+		echo "</form>";
+		echo "</div>";
+
+		require_once "footer.php";
+	}
+
+?>