Avoid huge exception argument logging
In some cases it might happen that you have an argument that deep down somewhere has an array with a lot of entries (think thousands). Now before we would just happily print them all. Which would fill the log. Now it will just print the first 5. And add a line that there are N more. If you are on debug level we will still print them all. Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>
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@ -315,7 +315,7 @@ class Log implements ILogger, IDataLogger {
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$app = $context['app'] ?? 'no app in context';
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$level = $context['level'] ?? ILogger::ERROR;
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$serializer = new ExceptionSerializer();
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$serializer = new ExceptionSerializer($this->config);
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$data = $serializer->serializeException($exception);
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$data['CustomMessage'] = $context['message'] ?? '--';
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@ -32,6 +32,7 @@ use OC\Core\Controller\SetupController;
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use OC\HintException;
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use OC\Security\IdentityProof\Key;
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use OC\Setup;
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use OC\SystemConfig;
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class ExceptionSerializer {
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public const methodsWithSensitiveParameters = [
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@ -88,6 +89,13 @@ class ExceptionSerializer {
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'update',
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];
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/** @var SystemConfig */
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private $systemConfig;
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public function __construct(SystemConfig $systemConfig) {
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$this->systemConfig = $systemConfig;
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}
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public const methodsWithSensitiveParametersByClass = [
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SetupController::class => [
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'run',
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@ -159,11 +167,21 @@ class ExceptionSerializer {
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$data = get_object_vars($arg);
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$data['__class__'] = get_class($arg);
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return array_map([$this, 'encodeArg'], $data);
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} elseif (is_array($arg)) {
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return array_map([$this, 'encodeArg'], $arg);
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} else {
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return $arg;
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}
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if (is_array($arg)) {
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// Only log the first 5 elements of an array unless we are on debug
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if ((int)$this->systemConfig->getValue('loglevel', 2) !== 0) {
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$elemCount = count($arg);
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if ($elemCount > 5) {
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$arg = array_slice($arg, 0, 5);
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$arg[] = 'And ' . ($elemCount - 5) . ' more entries, set log level to debug to see all entries';
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}
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}
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return array_map([$this, 'encodeArg'], $arg);
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}
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return $arg;
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}
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public function serializeException(\Throwable $exception) {
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