Fix errors reported by phpstan.

Author: ADmad

.travis.yml

@@ -17,6 +17,9 @@ matrix:
     - php: 7.1
       env: PHPCS=1 DEFAULT=0
 
+    - php: 7.1
+      env: PHPSTAN=1 DEFAULT=0
+
     - php: 5.6
       env: PREFER_LOWEST=1
 
@@ -29,13 +32,16 @@ before_script:
   - if [[ $DEFAULT = 1 ]]; then mysql -e 'CREATE DATABASE cakephp_test;'; fi
 
   - if [[ $PHPCS = 1 ]]; then composer require cakephp/cakephp-codesniffer:^3.0; fi
+  - if [[ $PHPSTAN = 1 ]]; then composer require phpstan/phpstan; fi
 
 script:
   - if [[ $DEFAULT = 1 && $TRAVIS_PHP_VERSION = 7.1 ]]; then vendor/bin/phpunit --coverage-clover=clover.xml; fi
   - if [[ $DEFAULT = 1 && $TRAVIS_PHP_VERSION != 7.1 ]]; then vendor/bin/phpunit; fi
 
   - if [[ $PHPCS = 1 ]]; then vendor/bin/phpcs -p --extensions=php --standard=vendor/cakephp/cakephp-codesniffer/CakePHP ./src ./tests; fi
 
+  - if [[ $PHPSTAN = 1 ]]; then vendor/bin/phpstan analyse -c phpstan.neon -l 5 src; fi
+
 after_success:
 - if [[ $DEFAULT = 1 && $TRAVIS_PHP_VERSION = 7.1 ]]; then bash <(curl -s https://codecov.io/bash); fi
 

phpstan.neon

@@ -0,0 +1,3 @@
+parameters:
+    ignoreErrors:
+        - '#Call to an undefined method object::getConfig\(\)#'

src/Auth/JwtAuthenticate.php

@@ -183,15 +183,15 @@ public function getPayload($request = null)
     /**
      * Get token from header or query string.
      *
-     * @param \Cake\Network\Request|null $request Request object.
+     * @param \Cake\Http\ServerRequest|null $request Request object.
      *
      * @return string|null Token string if found else null.
      */
     public function getToken($request = null)
     {
         $config = $this->_config;
 
-        if (!$request) {
+        if ($request === null) {
             return $this->_token;
         }
 
@@ -201,7 +201,10 @@ public function getToken($request = null)
         }
 
         if (!empty($this->_config['parameter'])) {
-            $this->_token = $request->getQuery($this->_config['parameter']);
+            $token = $request->getQuery($this->_config['parameter']);
+            if ($token !== null) {
+                $token = (string)$token;
+            }
         }
 
         return $this->_token;
@@ -252,7 +255,9 @@ public function unauthenticated(ServerRequest $request, Response $response)
             return;
         }
 
-        $message = $this->_error ? $this->_error->getMessage() : $this->_registry->Auth->_config['authError'];
+        $message = $this->_error
+            ? $this->_error->getMessage()
+            : $this->_registry->get('Auth')->getConfig('authError');
 
         $exception = new $this->_config['unauthenticatedException']($message);
         throw $exception;