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<?php |
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namespace ByTIC\Hello\Utility; |
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use League\OAuth2\Server\CryptKey; |
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use phpseclib\Crypt\RSA; |
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/** |
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* Class Helper |
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* @package ByTIC\Hello\Utility |
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*/ |
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class CryptHelper |
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{ |
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/** |
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* The storage location of the encryption keys. |
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* |
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* @var string |
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*/ |
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public static $keyPath; |
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/** |
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* Set the storage location of the encryption keys. |
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* |
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* @param string $path |
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* @return void |
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*/ |
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public static function loadKeysFrom($path) |
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{ |
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static::$keyPath = $path; |
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} |
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/** |
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* The location of the encryption keys. |
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* |
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* @param string $file |
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* @return string |
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*/ |
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public static function keyPath($file) |
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{ |
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$file = ltrim($file, '/\\'); |
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if (static::$keyPath) { |
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return rtrim(static::$keyPath, '/\\') . DIRECTORY_SEPARATOR . $file; |
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} |
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if (function_exists('Nip\storage_path')) { |
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return \Nip\storage_path('hello/keys/' . $file); |
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} |
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if (function_exists('storage_path')) { |
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return storage_path('hello/keys/' . $file); |
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} |
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return PathHelper::keys($file); |
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} |
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/** |
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* @param null $basePath |
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* @return bool |
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*/ |
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public static function generateKeys($basePath = null) |
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{ |
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$privateKeyName = 'oauth-private.key'; |
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$publicKeyName = 'oauth-public.key'; |
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$privateKeyPath = $basePath ? $basePath . DIRECTORY_SEPARATOR . $privateKeyName : static::keyPath($privateKeyName); |
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$publicKeyPath = $basePath ? $basePath . DIRECTORY_SEPARATOR . $publicKeyName : static::keyPath($publicKeyName); |
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$rsa = new RSA(); |
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$keys = $rsa->createKey(2048, false); |
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file_put_contents($privateKeyPath, $keys['privatekey']); |
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file_put_contents($publicKeyPath, $keys['publickey']); |
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$result = chmod($privateKeyPath, 0600); |
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$result = $result && chmod($publicKeyPath, 0600); |
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return $result; |
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} |
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/** |
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* @param $type |
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* @return CryptKey |
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*/ |
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public static function makeCryptKey($type) |
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{ |
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$configKey = null; |
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$configKey = ConfigHelper::get($type . '_key'); |
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$key = str_replace('\\n', "\n", $configKey); |
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if (!$key) { |
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$path = CryptHelper::keyPath('oauth-' . $type . '.key'); |
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if (!file_exists($path)) { |
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CryptHelper::generateKeys(dirname($path)); |
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} |
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$key = 'file://' . $path; |
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} |
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return new CryptKey($key, null, false); |
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} |
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} |
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This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVar
assignment in line 1 and the$higher
assignment in line 2 are dead. The first because$myVar
is never used and the second because$higher
is always overwritten for every possible time line.