File 0001-Nicely-handle-errors-on-FolderCreate-T2223... of Package kolab-syncroton

File 0001-Nicely-handle-errors-on-FolderCreate-T2223.patch of Package kolab-syncroton (Revision 4a3cb9cd7d50b7fba2ee9d7f257e19b4)

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From 1d7e1237f2dd2cc3882ed0b5491ef401eddcf1d2 Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <machniak@kolabsys.com>
Date: Fri, 10 Feb 2017 11:03:18 +0100
Subject: [PATCH 1/2] Nicely handle errors on FolderCreate (T2223)

---
 lib/ext/Syncroton/Command/FolderCreate.php | 75 +++++++++++++++++++-----------
 lib/kolab_sync_backend.php                 |  8 ++++
 lib/kolab_sync_data.php                    | 16 ++++++-
 3 files changed, 72 insertions(+), 27 deletions(-)

diff --git a/lib/ext/Syncroton/Command/FolderCreate.php b/lib/ext/Syncroton/Command/FolderCreate.php
index 1654b34..222c556 100644
--- a/lib/ext/Syncroton/Command/FolderCreate.php
+++ b/lib/ext/Syncroton/Command/FolderCreate.php
@@ -10,7 +10,7 @@
  */
 
 /**
- * class to handle ActiveSync FolderSync command
+ * class to handle ActiveSync FolderCreate command
  *
  * @package     Syncroton
  * @subpackage  Command
@@ -21,14 +21,17 @@ class Syncroton_Command_FolderCreate extends Syncroton_Command_Wbxml
     protected $_documentElement     = 'FolderCreate';
     
     /**
-     *
      * @var Syncroton_Model_Folder
      */
     protected $_folder;
+
+    /**
+     * @var int
+     */
+    protected $_status;
     
     /**
      * parse FolderCreate request
-     *
      */
     public function handle()
     {
@@ -39,14 +42,23 @@ class Syncroton_Command_FolderCreate extends Syncroton_Command_Wbxml
         if ($this->_logger instanceof Zend_Log) 
             $this->_logger->debug(__METHOD__ . '::' . __LINE__ . " synckey is $syncKey");
         
-        if (!($this->_syncState = $this->_syncStateBackend->validate($this->_device, 'FolderSync', $syncKey)) instanceof Syncroton_Model_SyncState) {
-            return;
-        }
+        if (!($this->_syncState = $this->_syncStateBackend->validate($this->_device, 'FolderSync', $syncKey)) instanceof Syncroton_Model_SyncState) {
+            if ($this->_logger instanceof Zend_Log) 
+                $this->_logger->info(__METHOD__ . '::' . __LINE__ . " invalid synckey provided. FolderSync 0 needed.");
+
+            $this->_status = Syncroton_Command_FolderSync::STATUS_INVALID_SYNC_KEY;
+            return;
+        }
         
-        $folder   = new Syncroton_Model_Folder($xml);
+        $folder = new Syncroton_Model_Folder($xml);
         
-        if ($this->_logger instanceof Zend_Log)
-            $this->_logger->debug(__METHOD__ . '::' . __LINE__ . " parentId: {$folder->parentId} displayName: {$folder->displayName}");
+        if ($this->_logger instanceof Zend_Log)
+            $this->_logger->debug(__METHOD__ . '::' . __LINE__ . " parentId: {$folder->parentId} displayName: {$folder->displayName}");
+
+        if (!strlen($folder->displayName)) {
+            $this->_status = Syncroton_Command_FolderSync::STATUS_MISFORMATTED;
+            return;
+        }
         
         switch($folder->type) {
             case Syncroton_Command_FolderSync::FOLDERTYPE_CALENDAR_USER_CREATED:
@@ -73,15 +85,32 @@ class Syncroton_Command_FolderCreate extends Syncroton_Command_Wbxml
                 // unsupported type
                 return;
         }
-        
-        $dataController = Syncroton_Data_Factory::factory($folder->class, $this->_device, $this->_syncTimeStamp);
-        
-        $this->_folder = $dataController->createFolder($folder);
-        $this->_folder->class        = $folder->class;
-        $this->_folder->deviceId     = $this->_device;
-        $this->_folder->creationTime = $this->_syncTimeStamp;
-        
-        $this->_folderBackend->create($this->_folder);
+
+        try {
+            $dataController = Syncroton_Data_Factory::factory($folder->class, $this->_device, $this->_syncTimeStamp);
+
+            $this->_folder = $dataController->createFolder($folder);
+
+            if (!$this->_folder) {
+                $this->_status = Syncroton_Command_FolderSync::STATUS_UNKNOWN_ERROR;
+            } else {
+                $this->_folder->class        = $folder->class;
+                $this->_folder->deviceId     = $this->_device;
+                $this->_folder->creationTime = $this->_syncTimeStamp;
+
+                $this->_folderBackend->create($this->_folder);
+            }
+        } catch (Syncroton_Exception_Status $e) {
+            if ($this->_logger instanceof Zend_Log)
+                $this->_logger->debug(__METHOD__ . '::' . __LINE__ . " " . $e->getMessage());
+
+            $this->_status = $e->getCode();
+        } catch (Exception $e) {
+            if ($this->_logger instanceof Zend_Log)
+                $this->_logger->debug(__METHOD__ . '::' . __LINE__ . " " . $e->getMessage());
+
+            $this->_status = Syncroton_Command_FolderSync::STATUS_UNKNOWN_ERROR;
+        }
     }
     
     /**
@@ -91,14 +120,8 @@ class Syncroton_Command_FolderCreate extends Syncroton_Command_Wbxml
     {
         $folderCreate = $this->_outputDom->documentElement;
         
-        if (!$this->_syncState instanceof Syncroton_Model_SyncState) {
-            if ($this->_logger instanceof Zend_Log) 
-                $this->_logger->info(__METHOD__ . '::' . __LINE__ . " invalid synckey provided. FolderSync 0 needed.");
-            $folderCreate->appendChild($this->_outputDom->createElementNS('uri:FolderHierarchy', 'Status', Syncroton_Command_FolderSync::STATUS_INVALID_SYNC_KEY));
-            
-        } else if (!$this->_folder instanceof Syncroton_Model_Folder) {
-            $folderCreate->appendChild($this->_outputDom->createElementNS('uri:FolderHierarchy', 'Status', Syncroton_Command_FolderSync::STATUS_UNKNOWN_ERROR));
-            
+        if ($this->_status) {
+            $folderCreate->appendChild($this->_outputDom->createElementNS('uri:FolderHierarchy', 'Status', $this->_status));
         } else {
             $this->_syncState->counter++;
             $this->_syncState->lastsync = $this->_syncTimeStamp;
diff --git a/lib/kolab_sync_backend.php b/lib/kolab_sync_backend.php
index 8d2c9eb..315a803 100644
--- a/lib/kolab_sync_backend.php
+++ b/lib/kolab_sync_backend.php
@@ -993,6 +993,14 @@ class kolab_sync_backend
     }
 
     /**
+     * Return last storage error
+     */
+    public static function last_error()
+    {
+        return kolab_storage::$last_error;
+    }
+
+    /**
      * Compares two arrays
      *
      * @param array $array1
diff --git a/lib/kolab_sync_data.php b/lib/kolab_sync_data.php
index ce0353a..500ab78 100644
--- a/lib/kolab_sync_data.php
+++ b/lib/kolab_sync_data.php
@@ -305,6 +305,10 @@ abstract class kolab_sync_data implements Syncroton_Data_IData
 
         if ($parentid) {
             $parent = $this->backend->folder_id2name($parentid, $this->device->deviceid);
+
+            if ($parent === null) {
+                throw new Syncroton_Exception_Status_FolderCreate(Syncroton_Exception_Status_FolderCreate::PARENT_NOT_FOUND);
+            }
         }
 
         $name = rcube_charset::convert($display_name, kolab_sync::CHARSET, 'UTF7-IMAP');
@@ -324,7 +328,17 @@ abstract class kolab_sync_data implements Syncroton_Data_IData
             return $folder;
         }
 
-        // @TODO: throw exception
+        $errno = Syncroton_Exception_Status_FolderCreate::UNKNOWN_ERROR;
+
+        // Special case when client tries to create a subfolder of INBOX
+        // which is not possible on Cyrus-IMAP (T2223)
+        if ($parent == 'INBOX' && stripos($this->backend->last_error(), 'invalid') !== false) {
+            $errno = Syncroton_Exception_Status_FolderCreate::SPECIAL_FOLDER;
+        }
+
+        // Note: Looks like Outlook 2013 ignores any errors on FolderCreate command
+
+        throw new Syncroton_Exception_Status_FolderCreate($errno);
     }
 
     /**
-- 
2.9.3