delete file hook

3 files changed, 104 insertions, 0 deletions

diff --git a/appinfo/application.php b/appinfo/application.php
index 0e06449..e83a0e9 100644
--- a/appinfo/application.php
+++ b/appinfo/application.php
@@ -42,6 +42,7 @@ use OCA\Onlyoffice\Controller\EditorController;
 use OCA\Onlyoffice\Controller\SettingsController;
 use OCA\Onlyoffice\Crypt;
 use OCA\Onlyoffice\DirectEditor;
+use OCA\Onlyoffice\Hooks;
 
 class Application extends App {
 
@@ -216,5 +217,8 @@ class Application extends App {
                 $c->query("IManager")
             );
         });
+
+
+        Hooks::connectHooks();
     }
 }
diff --git a/lib/fileversions.php b/lib/fileversions.php
index cc327e0..1c3a9c0 100644
--- a/lib/fileversions.php
+++ b/lib/fileversions.php
@@ -254,4 +254,27 @@ class FileVersions {
             $logger->logException($e, ["message" => "saveHistory: save $fileId history error", "app" => self::$appName]);
         }
     }
+
+    /**
+     * Delete all versions of file
+     *
+     * @param string $ownerId - file owner id
+     * @param string $fileId - file id
+     */
+    public static function deleteAllVersions($ownerId, $fileId) {
+        $logger = \OC::$server->getLogger();
+
+        $logger->debug("deleteAllVersions $ownerId $fileId", ["app" => self::$appName]);
+
+        if ($ownerId === null || $fileId === null) {
+            return;
+        }
+
+        list ($view, $path) = self::getView($ownerId, $fileId);
+        if ($view === null) {
+            return;
+        }
+
+        $view->unlink($path);
+    }
 }
diff --git a/lib/hooks.php b/lib/hooks.php
new file mode 100644
index 0000000..b0ab0cc
--- /dev/null
+++ b/lib/hooks.php
@@ -0,0 +1,77 @@
+<?php
+/**
+ *
+ * (c) Copyright Ascensio System SIA 2020
+ *
+ * This program is a free software product.
+ * You can redistribute it and/or modify it under the terms of the GNU Affero General Public License
+ * (AGPL) version 3 as published by the Free Software Foundation.
+ * In accordance with Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
+ * that Ascensio System SIA expressly excludes the warranty of non-infringement of any third-party rights.
+ *
+ * This program is distributed WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * For details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
+ *
+ * You can contact Ascensio System SIA at 20A-12 Ernesta Birznieka-Upisha street, Riga, Latvia, EU, LV-1050.
+ *
+ * The interactive user interfaces in modified source and object code versions of the Program
+ * must display Appropriate Legal Notices, as required under Section 5 of the GNU AGPL version 3.
+ *
+ * Pursuant to Section 7(b) of the License you must retain the original Product logo when distributing the program.
+ * Pursuant to Section 7(e) we decline to grant you any rights under trademark law for use of our trademarks.
+ *
+ * All the Product's GUI elements, including illustrations and icon sets, as well as technical
+ * writing content are licensed under the terms of the Creative Commons Attribution-ShareAlike 4.0 International.
+ * See the License terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
+ *
+ */
+
+namespace OCA\Onlyoffice;
+
+use OC\Files\Filesystem;
+
+use OCP\Util;
+
+/**
+ * The class to handle the filesystem hooks
+ *
+ * @package OCA\Onlyoffice
+ */
+class Hooks {
+
+    /**
+     * Application name
+     *
+     * @var string
+     */
+    private static $appName = "onlyoffice";
+
+    public static function connectHooks() {
+        // Listen file deletion
+        Util::connectHook("OC_Filesystem", "delete", Hooks::class, "fileDelete");
+    }
+
+    /**
+     * Erase versions of deleted file
+     *
+     * @param array $params - hook params
+     */
+    public static function fileDelete($params) {
+        $filePath = $params[Filesystem::signal_param_path];
+        if (empty($filePath)) {
+            return;
+        }
+
+        try {
+            $ownerId = Filesystem::getOwner($filePath);
+
+            $fileInfo = Filesystem::getFileInfo($filePath);
+            $fileId = $fileInfo->getId();
+
+            FileVersions::deleteAllVersions($ownerId, $fileId);
+        } catch (\Exception $e) {
+            \OC::$server->getLogger()->logException($e, ["message" => "Hook: fileDelete " . json_encode($params), "app" => self::$appName]);
+        }
+    }
+}