From 07151e1643934de1b19c910f3b3a287ee39a610c Mon Sep 17 00:00:00 2001
From: Prasath Mani <pmani@sapient.com>
Date: Fri, 2 Nov 2018 17:48:54 +0530
Subject: [PATCH] Added Google Docs Viewer

---
 README.md           |  4 ++++
 tinyfilemanager.php | 23 +++++++++++++++++++++--
 2 files changed, 25 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 8968d1d..1cb6fbc 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,9 @@ It is a simple, fast and small file manager with single php file. It is also a w
 ## Demo
 <a href="https://tinyfilemanager.herokuapp.com" target="_blank">tinyfilemanager.herokuapp.com</a>
 
+ Login Details : admin/admin | user/12345
+
+
 ## Documents
 <a href="https://tinyfilemanager.github.io/" target="_blank">tinyfilemanager.github.io</a>
 <hr>
@@ -50,6 +53,7 @@ To enable/disable authentication set $use_auth to true or false.
 <li>:sunglasses: Support user permissions - based on session and each user root folder mapping</li>
 <li>:floppy_disk: Copy direct file URL</li>
 <li>:pencil2: Edit text formats file using advanced editor</li>
+<li>:page_facing_up: Google Drive viewer helps you preview PDF/DOC/XLS/PPT/etc. 25 MB can be previewed with the Google Drive viewer</li>
 <li>:zap: Backup files</li>
 <li>:mag_right: Search - Advanced Ajax based seach</li>
 <li>:file_folder: Exclude folders from listing</li>
diff --git a/tinyfilemanager.php b/tinyfilemanager.php
index f0110fa..272dddb 100644
--- a/tinyfilemanager.php
+++ b/tinyfilemanager.php
@@ -64,6 +64,9 @@ $upload_extensions = ''; // 'gif,png,jpg'
 //Array of files and folders excluded from listing
 $GLOBALS['exclude_items'] = array();
 
+//Google Docs Viewer
+$GLOBALS['online_viewer'] = true;
+
 // include user config php file
 if (defined('FM_CONFIG') && is_file(FM_CONFIG)) {
     include(FM_CONFIG);
@@ -845,12 +848,16 @@ if (isset($_GET['view'])) {
     $is_audio = false;
     $is_video = false;
     $is_text = false;
+    $is_onlineViewer = false;
 
     $view_title = 'File';
     $filenames = false; // for zip
     $content = ''; // for text
 
-    if ($ext == 'zip') {
+    if($GLOBALS['online_viewer'] && in_array($ext, fm_get_onlineViewer_exts())){
+        $is_onlineViewer = true;
+    }
+    elseif ($ext == 'zip') {
         $is_zip = true;
         $view_title = 'Archive';
         $filenames = fm_get_zif_info($file_path);
@@ -941,7 +948,10 @@ if (isset($_GET['view'])) {
             <b><a href="?p=<?php echo urlencode(FM_PATH) ?>"><i class="fa fa-chevron-circle-left"></i> Back</a></b>
         </p>
         <?php
-        if ($is_zip) {
+        if($is_onlineViewer) {
+            // Google docs viewer
+            echo '<iframe src="https://docs.google.com/viewer?embedded=true&hl=en&url=' . fm_enc($file_url) . '" frameborder="no" style="width:100%;min-height:460px"></iframe>';
+        } elseif ($is_zip) {
             // ZIP content
             if ($filenames !== false) {
                 echo '<code class="maxheight">';
@@ -1974,6 +1984,15 @@ function fm_get_text_names()
     );
 }
 
+/**
+ * Get audio files extensions
+ * @return array
+ */
+function fm_get_onlineViewer_exts()
+{
+    return array('doc', 'docx', 'xls', 'xlsx', 'pdf', 'ppt', 'pptx', 'ai', 'psd', 'dxf', 'xps', 'rar');
+}
+
 /**
  * Class to work with zip files (using ZipArchive)
  */