ZP-1229 Add new optional parameter to Syncobject.equals() for strict type...

ZP-1229  Add new optional parameter to Syncobject.equals() for strict type checking, and undo the global change made to use strict checking introduced by ZP-1088. Released under the Affero GNU General Public License (AGPL) version 3.

src/lib/core/changesmemorywrapper.php

@@ -267,7 +267,7 @@ class ChangesMemoryWrapper extends HierarchyCache implements IImportChanges, IEx
                 // The Zarafa/Kopano HierarchyExporter exports all kinds of changes for folders (e.g. update no. of unread messages in a folder).
                 // These changes are not relevant for the mobiles, as something changes but the relevant displayname and parentid
                 // stay the same. These changes will be dropped and are not sent!
-                if ($folder->equals($this->GetFolder($folder->serverid))) {
+                if ($folder->equals($this->GetFolder($folder->serverid),false,true)) {
                     ZLog::Write(LOGLEVEL_DEBUG, sprintf("ChangesMemoryWrapper->ImportFolderChange(): Change for folder '%s' will not be sent as modification is not relevant.", $folder->displayname));
                     return false;
                 }

src/lib/syncobjects/syncobject.php

@@ -95,9 +95,11 @@ abstract class SyncObject extends Streamer {
      *
      * @see SyncObject
      * @param SyncObject $odo other SyncObject
+     * @param boolean $log flag to turn on logging
+     * @param boolean $strictTypeCompare to enforce type matching 
      * @return boolean
      */
-    public function equals($odo, $log = false) {
+    public function equals($odo, $log = false, $strictTypeCompare = false) {
         if ($odo === false)
             return false;
 
@@ -131,11 +133,18 @@ abstract class SyncObject extends Streamer {
             }
             else {
                 if (isset($this->$val) && isset($odo->$val)) {
+                    if ($strictTypeCompare){
                         if ($this->$val !== $odo->$val){
+                            ZLog::Write(LOGLEVEL_DEBUG, sprintf("SyncObject->equals() false on field '%s': '%s' != '%s' using strictTypeCompare", $val, Utils::PrintAsString($this->$val), Utils::PrintAsString($odo->$val)));
+                            return false;
+                        }
+                    } else {
+                        if ($this->$val != $odo->$val){
                             ZLog::Write(LOGLEVEL_DEBUG, sprintf("SyncObject->equals() false on field '%s': '%s' != '%s'", $val, Utils::PrintAsString($this->$val), Utils::PrintAsString($odo->$val)));
                             return false;
                         }
                     }
+                }
                 else if (!isset($this->$val) && !isset($odo->$val)) {
                     continue;
                 }