| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  | namespace AsyncPHP\Icicle\Database\Connector; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  | use AsyncPHP\Doorman\Handler; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  | use AsyncPHP\Doorman\Task; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  | use AsyncPHP\Remit\Client; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  | use AsyncPHP\Remit\Client\ZeroMqClient; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  | use AsyncPHP\Remit\Location\InMemoryLocation; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  | use AsyncPHP\Remit\Server; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  | use AsyncPHP\Remit\Server\ZeroMqServer; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  | use Aura\Sql\ExtendedPdo; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  | use Icicle\Loop; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  | use PDO; | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 15 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 16 |  |  | final class DoormanConnectorHandler implements Handler | 
            
                                                                        
                            
            
                                    
            
            
                | 17 |  |  | { | 
            
                                                                        
                            
            
                                    
            
            
                | 18 |  |  |     /** | 
            
                                                                        
                            
            
                                    
            
            
                | 19 |  |  |      * @inheritdoc | 
            
                                                                        
                            
            
                                    
            
            
                | 20 |  |  |      * | 
            
                                                                        
                            
            
                                    
            
            
                | 21 |  |  |      * @param Task $task | 
            
                                                                        
                            
            
                                    
            
            
                | 22 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  |     public function handle(Task $task) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  |         $config = $task->getData(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  |         if ($config["driver"] === "mysql") { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  |             $config += [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  |                 "host" => "127.0.0.1", | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  |                 "port" => 3306, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  |                 "charset" => "utf8", | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  |                 "socket" => null, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  |             ]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  |         if ($config["remit"]["driver"] === "zeromq") { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  |             $config["remit"]["server"] += [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  |                 "host" => "127.0.0.1", | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  |             ]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  |             $config["remit"]["client"] += [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  |                 "host" => "127.0.0.1", | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  |             ]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  |             $server = new ZeroMqServer( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  |                 new InMemoryLocation( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  |                     $config["remit"]["client"]["host"], | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  |                     $config["remit"]["client"]["port"] | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  |                 ) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  |             ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  |             $client = new ZeroMqClient( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  |                 new InMemoryLocation( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  |                     $config["remit"]["server"]["host"], | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  |                     $config["remit"]["server"]["port"] | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  |                 ) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  |             ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  |         $connection = new ExtendedPdo( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  |             new PDO($this->newConnectionString($config), $config["username"], $config["password"]) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  |         ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  |         $server->addListener("q", function ($query, $values, $id) use ($client, $connection) { | 
                            
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                | 65 |  |  |             $client->emit("r", [$connection->fetchAll($query, $values), $id]); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  |         }); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  |         $server->addListener("d", function () use ($connection, $server, $client) { | 
                            
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                | 69 |  |  |             $client->emit("dd"); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 |  |  |             try { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 |  |  |                 $connection->disconnect(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  |             } catch (Exception $exception) { | 
                            
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                | 74 |  |  |                 // TODO: find an elegant way to deal with this | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  |             $server->disconnect(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 78 |  |  |             $client->disconnect(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 |  |  |             Loop\stop(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 |  |  |         }); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 82 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  |         Loop\periodic(0, function () use ($server) { | 
                            
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                | 84 |  |  |             $server->tick(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 85 |  |  |         }); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 87 |  |  |         Loop\run(); | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 88 |  |  |     } | 
            
                                                                        
                            
            
                                    
            
            
                | 89 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 90 |  |  |     /** | 
            
                                                                        
                            
            
                                    
            
            
                | 91 |  |  |      * Returns a new dsn string, for PDO to connect to the database with. | 
            
                                                                        
                            
            
                                    
            
            
                | 92 |  |  |      * | 
            
                                                                        
                            
            
                                    
            
            
                | 93 |  |  |      * @param array $config | 
            
                                                                        
                            
            
                                    
            
            
                | 94 |  |  |      * | 
            
                                                                        
                            
            
                                    
            
            
                | 95 |  |  |      * @return string | 
            
                                                                        
                            
            
                                    
            
            
                | 96 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 97 |  |  |     private function newConnectionString(array $config) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 98 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 99 |  |  |         if ($config["driver"] === "mysql") { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 100 |  |  |             return "mysql:host={$config['host']};port={$config['port']};dbname={$config['schema']};unix_socket={$config['socket']};charset={$config['charset']}"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 101 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 102 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 103 |  |  |         if ($config["driver"] === "pgsql") { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 104 |  |  |             return "pgsql:host={$config['host']};port={$config['port']};dbname={$config['schema']}"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 105 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 106 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 107 |  |  |         if ($config["driver"] === "sqlite") { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 108 |  |  |             return "sqlite:{$config['file']}"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 109 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 110 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 111 |  |  |         if ($config["driver"] === "sqlsrv") { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 112 |  |  |             return "sqlsrv:Server={$config['host']},{$config['port']};Database={$config['schema']}"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 113 |  |  |         } | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 114 |  |  |     } | 
            
                                                        
            
                                    
            
            
                | 115 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 116 |  |  |  | 
            
                        
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:
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
Check for existence of the variable explicitly:
Define a default value for the variable:
Add a value for the missing path: