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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                declare(strict_types=1);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Ely\Mojang\Response;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use ArrayAccess;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Countable;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use InvalidArgumentException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class BlockedServersCollection implements ArrayAccess, Countable { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var string[]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $hashes;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function __construct(array $hashes) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->hashes = $hashes;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function offsetExists($offset): bool { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return isset($this->hashes[$offset]);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function offsetGet($offset): string { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->hashes[$offset];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function offsetSet($offset, $value): void { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->hashes[$offset] = $value;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function offsetUnset($offset): void { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        unset($this->hashes[$offset]);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function count(): int { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return count($this->hashes);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string $serverName  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return bool  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @link https://wiki.vg/Mojang_API#Blocked_Servers  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public function isBlocked(string $serverName): bool { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        if (filter_var($serverName, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                            throw new InvalidArgumentException('Minecraft does not support IPv6, so this library too'); | 
            
            
                                                                        
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $isIp = filter_var($serverName, FILTER_VALIDATE_IP) !== false;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        foreach ($this->generateSubstitutions(mb_strtolower($serverName), $isIp) as $mask) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $hash = sha1($mask);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            if (in_array($hash, $this->hashes, true)) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                                return true;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        return false;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private function generateSubstitutions(string $input, bool $right): iterable { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        yield $input;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $parts = explode('.', $input); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        while (count($parts) > 1) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if ($right) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                array_pop($parts);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                yield implode('.', $parts) . '.*'; | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            } else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                array_shift($parts);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                yield '*.' . implode('.', $parts); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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