Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
| 1 | <?php |
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| 30 | class Driver extends DriverAbstract |
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| 31 | { |
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| 32 | use PathSeekerTrait; |
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| 33 | |||
| 34 | /** |
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| 35 | * |
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| 36 | */ |
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| 37 | const FILE_DIR = 'files'; |
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| 38 | |||
| 39 | /** |
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| 40 | * Driver constructor. |
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| 41 | * @param array $config |
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| 42 | * @throws phpFastCacheDriverException |
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| 43 | */ |
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| 44 | public function __construct(array $config = []) |
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| 52 | |||
| 53 | /** |
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| 54 | * @return bool |
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| 55 | */ |
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| 56 | public function driverCheck() |
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| 57 | { |
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| 58 | return is_writable($this->getFileDir()) || @mkdir($this->getFileDir(), $this->setChmodAuto(), true); |
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| 59 | } |
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| 60 | |||
| 61 | /** |
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| 62 | * @param \Psr\Cache\CacheItemInterface $item |
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| 63 | * @return mixed |
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| 64 | * @throws \InvalidArgumentException |
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| 65 | */ |
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| 66 | protected function driverWrite(CacheItemInterface $item) |
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| 104 | |||
| 105 | /** |
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| 106 | * @param \Psr\Cache\CacheItemInterface $item |
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| 107 | * @return mixed |
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| 108 | */ |
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| 109 | protected function driverRead(CacheItemInterface $item) |
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| 110 | { |
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| 111 | /** |
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| 112 | * Check for Cross-Driver type confusion |
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| 113 | */ |
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| 114 | $file_path = $this->getFilePath($item->getKey()); |
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| 115 | if (!file_exists($file_path)) { |
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| 116 | return null; |
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| 117 | } |
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| 118 | |||
| 119 | $content = $this->readfile($file_path); |
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| 120 | $object = $this->decode($content); |
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| 121 | |||
| 122 | if ($this->driverUnwrapTime($object)->getTimestamp() < time()) { |
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| 123 | @unlink($file_path); |
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| 124 | |||
| 125 | return null; |
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| 126 | } |
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| 127 | |||
| 128 | return $object; |
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| 129 | |||
| 130 | } |
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| 131 | |||
| 132 | /** |
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| 133 | * @param \Psr\Cache\CacheItemInterface $item |
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| 134 | * @return bool |
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| 135 | * @throws \InvalidArgumentException |
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| 136 | */ |
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| 137 | protected function driverDelete(CacheItemInterface $item) |
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| 153 | |||
| 154 | /** |
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| 155 | * @return bool |
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| 156 | */ |
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| 157 | protected function driverClear() |
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| 161 | |||
| 162 | /** |
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| 163 | * @return bool |
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| 164 | */ |
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| 165 | protected function driverConnect() |
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| 169 | |||
| 170 | /** |
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| 171 | * @param string $optionName |
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| 172 | * @param mixed $optionValue |
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| 173 | * @return bool |
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| 174 | * @throws \InvalidArgumentException |
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| 175 | */ |
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| 176 | public static function isValidOption($optionName, $optionValue) |
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| 199 | |||
| 200 | /** |
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| 201 | * @return array |
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| 202 | */ |
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| 203 | public static function getValidOptions() |
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| 207 | |||
| 208 | /** |
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| 209 | * @return array |
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| 210 | */ |
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| 211 | public static function getRequiredOptions() |
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| 215 | |||
| 216 | /******************** |
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| 217 | * |
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| 218 | * PSR-6 Extended Methods |
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| 219 | * |
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| 220 | *******************/ |
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| 221 | |||
| 222 | /** |
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| 223 | * @return driverStatistic |
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| 224 | * @throws \phpFastCache\Exceptions\phpFastCacheCoreException |
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| 225 | * @throws \phpFastCache\Exceptions\phpFastCacheDriverException |
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| 226 | */ |
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| 227 | View Code Duplication | public function getStats() |
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| 243 | } |
$this->getFileDir()can contain request data and is used in file manipulation context(s) leading to a potential security vulnerability.General Strategies to prevent injection
In general, it is advisable to prevent any user-data to reach this point. This can be done by white-listing certain values:
if ( ! in_array($value, array('this-is-allowed', 'and-this-too'), true)) { throw new \InvalidArgumentException('This input is not allowed.'); }For numeric data, we recommend to explicitly cast the data: