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Push — master ( 390e4e...b0ec12 )
by Taosikai
12:57
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RequireAuthHandler::handle()   A

↳ Parent: RequireAuthHandler

Complexity

Conditions 3
Paths 2

Size

Total Lines 12
Code Lines 8

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
c 0
b 0
f 0
dl 0
loc 12
rs 9.4285
cc 3
eloc 8
nc 2
nop 1
1 
<?php
2 
/**
3 
 * Spike library
4 
 * @author Tao <[email protected]>
5 
 */
6 
namespace Spike\Server\Handler;
7 

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use Slince\Event\Event;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use Spike\Server\Client;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use Spike\Protocol\SpikeInterface;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use Spike\Server\EventStore;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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class RequireAuthHandler extends MessageHandler

            


            
                                                                                                            
                            
            
                                    
            
            

                
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{

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    /**

            


            
                                                                                                            
                            
            
                                    
            
            

                
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     * @var Client

            


            
                                                                                                            
                            
            
                                    
            
            

                
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     */

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    protected $client;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    /**

            


            
                                                                                                            
                            
            
                                    
            
            

                
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     * {@inheritdoc}

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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     */

            


            
                                                        
            
                                    
            
            

                
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    public function handle(SpikeInterface $message)

            


            
                                                        
            
                                    
            
            

                
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    {

            


            
                                                        
            
                                    
            
            

                
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        $clientId = $message->getHeader('Client-ID');

            


            
                                                        
            
                                    
            
            

                
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        if (!$clientId || !($client = $this->server->getClients()->findById($clientId))) {

            


            
                                                        
            
                                    
            
            

                
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            $this->getDispatcher()->dispatch(new Event(EventStore::UNAUTHORIZED_CLIENT, $this, [

            


            
                                                        
            
                                    
            
            

                
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                'clientId' => $clientId,

            


            
                                                        
            
                                    
            
            

                
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                'connection' => $this->connection

            


            
                                                        
            
                                    
            
            

                
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            ]));

            


            
                                                        
            
                                    
            
            

                
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            $this->connection->close();

            


            
                                                        
            
                                    
            
            

                
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        }

            


            
                                                        
            
                                    
            
            

                
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        $this->client = $client;

            


                            

                    
                        
                    
                    
                    
                    
                                                                                                    
                        

                            
                            
0 ignored issues

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                            show
                        


                        

                                                                                        




    

        
            Bug
    
    
    
        introduced 
                            by 
            

        

        

            
        

        

            

                

                    
                
                
            


        

    

    

        
                        

                            
                                
                            
                        

                                        
The variable $client 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. 

  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. 

  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;
}

    

    

    4. 



                        

                                                    

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    }

            


            
                                                        
            
                                    
            
            

                
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}