new: [debug] Added an on-demand sync debug to assist some debug sessions

- very primitives, simply concatenates events to be pushed into a file

app/Model/Event.php

@@ -1179,6 +1179,16 @@ class Event extends AppModel
         $request = $this->setupSyncRequest($server);
         $uri = $url . '/events' . $this->__getLastUrlPathComponent($urlPath);
         $data = json_encode($event);
+        if (!empty(Configure::read('Security.sync_audit'))) {
+            $pushLogEntry = sprintf(
+                "==============================================================\n\n[%s] Pushing Event #%d to Server #%d:\n\n%s\n\n",
+                date("Y-m-d H:i:s"),
+                $event['Event']['id'],
+                $server['Server']['id'],
+                $data
+            );
+            file_put_contents(APP . 'files/scripts/tmp/debug_server_' . $server['Server']['id'] . '.log', $pushLogEntry, FILE_APPEND);
+        }
         $response = $HttpSocket->post($uri, $data, $request);
         return $this->__handleRestfulEventToServerResponse($response, $newLocation, $newTextBody);
     }

app/Model/Server.php

@@ -1241,6 +1241,15 @@ class Server extends AppModel
                             'test' => 'testForEmpty',
                             'type' => 'string',
                             'null' => true
+                        ),
+                        'sync_audit' => array(
+                            'level' => 1,
+                            'description' => __('Enable this setting to create verbose logs of synced event data for debugging reasons. Logs are saved in your MISP directory\'s app/files/scripts/tmp/ directory.'),
+                            'value' => false,
+                            'errorMessage' => '',
+                            'test' => 'testBoolFalse',
+                            'type' => 'boolean',
+                            'null' => true
                         )
                 ),
                 'SecureAuth' => array(