new: [fatal error] logging added

- helps administrators to easily see what went wrong in terms of timeouts / oom issues

app/Config/bootstrap.default.php

@@ -180,3 +180,7 @@ CakeLog::config('error', array(
 CakePlugin::loadAll(array(
 	'CakeResque' => array('bootstrap' => true)
 ));
+
+
+// Enable the additional exception logging for certain failures (timeouts, out of memory, etc)
+Configure::write('Exception.renderer', 'AppExceptionRenderer');

app/Error/AppExceptionRenderer.php

@@ -0,0 +1,77 @@
+<?php
+
+App::uses('ExceptionRenderer', 'Error');
+
+class AppExceptionRenderer extends ExceptionRenderer {
+
+    public function __construct($exception) {
+        $this->controller = $this->_getController($exception);
+
+        if (method_exists($this->controller, 'appError')) {
+            $this->controller->appError($exception);
+            return;
+        }
+        $method = $template = Inflector::variable(str_replace('Exception', '', get_class($exception)));
+        $code = $exception->getCode();
+
+        $methodExists = method_exists($this, $method);
+        if ($exception instanceof CakeException && !$methodExists) {
+            $this->_customErrorLogging($exception);
+            $method = '_cakeError';
+            if (empty($template) || $template === 'internalError') {
+                $template = 'error500';
+            }
+        } elseif ($exception instanceof PDOException) {
+            $method = 'pdoError';
+            $template = 'pdo_error';
+            $code = 500;
+        } elseif (!$methodExists) {
+            $method = 'error500';
+            if ($code >= 400 && $code < 500) {
+                $method = 'error400';
+            }
+        }
+
+        $isNotDebug = !Configure::read('debug');
+        if ($isNotDebug && $method === '_cakeError') {
+            $method = 'error400';
+        }
+        if ($isNotDebug && $code == 500) {
+            $method = 'error500';
+        }
+        $this->template = $template;
+        $this->method = $method;
+        $this->error = $exception;
+    }
+
+    protected function _customErrorLogging($exception): bool
+    {
+        $message = $exception->getMessage();
+        $errorDetection = [
+            'Maximum execution time of' => 'timeout',
+            'Allowed memory size of' => 'out of memory'
+        ];
+        $user = $this->controller->Auth->user();
+        $ua = env('HTTP_USER_AGENT');
+        $source = $this->controller->IndexFilter->isRest() ? 'API' : 'web UI';
+        if (strpos($ua, 'MISP ') !== false) {
+            $source = 'MISP sync';
+        }
+        foreach ($errorDetection as $search => $errorName) {
+            if (strpos($message, $search) !== false) {
+                $logMessage = sprintf(
+                    '%s %s error triggered by User %s (%s) via the %s on %s.',
+                    date('Y-m-d H:i:s'),
+                    $errorName,
+                    $user['id'],
+                    $user['email'],
+                    $source,
+                    $this->controller->request->here()
+                );
+                file_put_contents(LOGS . 'fatal_error.log', $logMessage . PHP_EOL, FILE_APPEND);
+                return true;
+            }
+        }
+        return true;
+    }
+}