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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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