Failed Conditions
Pull Request — master (#4)
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unknown
05:19
created

src/Controller.php (1 issue)

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<?php
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namespace Jasny;
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use Psr\Http\Message\ServerRequestInterface;
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use Psr\Http\Message\ResponseInterface;
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/**
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 * Controller
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 */
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abstract class Controller
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{
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    /**
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     * Server request
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     * @var ServerRequestInterface
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     **/
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    protected $request = null;
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    /**
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     * Response
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     * @var ResponseInterface
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     **/
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    protected $response = null;
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    /**
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     * Run the controller
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     *
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     * @return ResponseInterface
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     */
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    abstract public function run();
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    /**
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     * Get request, set for controller
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     *
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     * @return ServerRequestInterface
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     */
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    public function getRequest()
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    {
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        return $this->request;
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    }
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    /**
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     * Get response. set for controller
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     *
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     * @return ResponseInterface
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     */
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    public function getResponse()
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    {
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        return $this->response;
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    }
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    /**
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     * Run the controller as function
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     *
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     * @param ServerRequestInterface $request
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     * @param ResponseInterface      $response
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     * @return ResponseInterface
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     */
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    public function __invoke(ServerRequestInterface $request, ResponseInterface $response)
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    {
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        $this->request = $request;
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        $this->response = $response;
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        return $this->run();
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    }
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    /**
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     * Check if response is 2xx succesful, or empty
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     * 
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     * @return boolean
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     */
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    public function isSuccessful()
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    {
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        $code = $this->getResponseStatusCode();
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        return !$code || ($code >= 200 && $code < 300);
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    }
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    /**
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     * Check if response is a 3xx redirect
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     * 
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     * @return boolean
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     */
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    public function isRedirection()
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    {
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        $code = $this->getResponseStatusCode();
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        return $code >= 300 && $code < 400;
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    }
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    /**
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     * Check if response is a 4xx client error
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     * 
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     * @return boolean
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     */
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    public function isClientError()
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    {
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        $code = $this->getResponseStatusCode();
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        return $code >= 400 && $code < 500;
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    }
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    /**
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     * Check if response is a 5xx redirect
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     * 
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     * @return boolean
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     */
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    public function isServerError()
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    {
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        return $this->getResponseStatusCode() >= 500;
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    }   
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    /**
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      * Check if response is 4xx or 5xx error
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      *
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      * @return boolean
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      */
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     public function isError()
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     {
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         return $this->isClientError() || $this->isServerError();
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     }
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    /**
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     * Encode data to send to client
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     *
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     * @param mixed $data
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     * @return string
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     */
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    public function encodeData($data)
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    {
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        $response = $this->getResponse();
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        $invalid = !$response || 
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            !($type = $response->getHeaderLine('Content-Type')) ||
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            !in_array($type, ['application/json', 'text/xml', 'application/xml'], true);
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        if ($invalid) {
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            throw new \RuntimeException("Valid content type is not set in response for encoding data");            
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        }
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        switch ($type) {
0 ignored issues
show
The variable $type does not seem to be defined for all execution paths leading up to this point.

If you define a variable conditionally, it can happen that it is not defined for all execution paths.

Let’s take a look at an example:

function myFunction($a) {
    switch ($a) {
        case 'foo':
            $x = 1;
            break;

        case 'bar':
            $x = 2;
            break;
    }

    // $x is potentially undefined here.
    echo $x;
}

In the above example, the variable $x is defined if you pass “foo” or “bar” as argument for $a. However, since the switch statement has no default case statement, if you pass any other value, the variable $x would be undefined.

Available Fixes

  1. Check for existence of the variable explicitly:

    function myFunction($a) {
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
        }
    
        if (isset($x)) { // Make sure it's always set.
            echo $x;
        }
    }
    
  2. Define a default value for the variable:

    function myFunction($a) {
        $x = ''; // Set a default which gets overridden for certain paths.
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
        }
    
        echo $x;
    }
    
  3. Add a value for the missing path:

    function myFunction($a) {
        switch ($a) {
            case 'foo':
                $x = 1;
                break;
    
            case 'bar':
                $x = 2;
                break;
    
            // We add support for the missing case.
            default:
                $x = '';
                break;
        }
    
        echo $x;
    }
    
Loading history...
141 7
            case 'application/json': 
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                return $this->encodeDataAsJson($data);                            
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            case 'text/xml':
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            case 'application/xml':
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                return $this->encodeDataAsXml($data);
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        }
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    } 
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    /**
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     * Encode data as xml
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     *
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     * @param \SimpleXMLElement $data
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     * @return string
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     */
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    protected function encodeDataAsXml(\SimpleXMLElement $data)
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    {
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        return $data->asXML();
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    }
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    /**
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     * Encode data as json
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     *
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     * @param mixed
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     * @return string
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     */
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    protected function encodeDataAsJson($data)
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    {
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        $data = json_encode($data);
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        return $this->isJsonp() ? 
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            $this->getRequest()->getQueryParams()['callback'] . '(' . $data . ')' : 
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            $data;
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    }
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    /**
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     * Check if we should respond with jsonp
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     *
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     * @return boolean
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     */
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    protected function isJsonp()
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    {
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        $request = $this->getRequest();
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        return $request && !empty($request->getQueryParams()['callback']);
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    }
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     /**
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      * Get status code of response
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      *
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      * @return int
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      */
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     protected function getResponseStatusCode()
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     {
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        $response = $this->getResponse();
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        return $response ? $response->getStatusCode() : 0;
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     }
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}
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