Complex classes like Bouncer often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Bouncer, and based on these observations, apply Extract Interface, too.
1 | <?php |
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14 | class Bouncer |
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15 | { |
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16 | |||
17 | const NICE = 'nice'; |
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18 | const OK = 'ok'; |
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19 | const SUSPICIOUS = 'suspicious'; |
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20 | const BAD = 'bad'; |
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21 | |||
22 | const ROBOT = 'robot'; |
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23 | const BROWSER = 'browser'; |
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24 | const UNKNOWN = 'unknown'; |
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25 | |||
26 | /** |
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27 | * @var string|object |
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28 | */ |
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29 | protected $profile; |
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30 | |||
31 | /** |
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32 | * @var boolean |
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33 | */ |
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34 | protected $throwExceptions = false; |
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35 | |||
36 | /** |
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37 | * @var boolean |
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38 | */ |
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39 | protected $logErrors = true; |
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40 | |||
41 | /** |
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42 | * @var boolean |
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43 | */ |
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44 | protected $cookieName = 'bsid'; |
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45 | |||
46 | /** |
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47 | * @var \Bouncer\Cache\CacheInterface |
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48 | */ |
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49 | protected $cache; |
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50 | |||
51 | /** |
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52 | * @var \Bouncer\Logger\LoggerInterface |
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53 | */ |
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54 | protected $logger; |
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55 | |||
56 | /** |
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57 | * @var Request |
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58 | */ |
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59 | protected $request; |
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60 | |||
61 | /** |
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62 | * @var array |
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63 | */ |
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64 | protected $analyzers = array(); |
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65 | |||
66 | /** |
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67 | * @var Identity |
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68 | */ |
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69 | protected $identity; |
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70 | |||
71 | /** |
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72 | * Store metadata about the handling of the request |
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73 | * |
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74 | * @var array |
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75 | */ |
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76 | protected $connection = array(); |
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77 | |||
78 | /** |
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79 | * @var boolean |
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80 | */ |
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81 | protected $started = false; |
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82 | |||
83 | /** |
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84 | * @var boolean |
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85 | */ |
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86 | protected $ended = false; |
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87 | |||
88 | public function __construct(array $options = array()) |
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89 | { |
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90 | if (!empty($options)) { |
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91 | $this->setOptions($options); |
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92 | } |
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93 | |||
94 | // Load Profile |
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95 | if (!$this->profile) { |
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96 | $this->profile = new \Bouncer\Profile\Standard; |
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97 | } |
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98 | call_user_func_array(array($this->profile, 'load'), array($this)); |
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99 | } |
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100 | |||
101 | /* |
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102 | * Set the supported options |
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103 | */ |
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104 | public function setOptions(array $options = array()) |
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119 | |||
120 | /** |
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121 | * @throw Exception |
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122 | */ |
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123 | public function error($message) |
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132 | |||
133 | /** |
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134 | * @return \Bouncer\Cache\CacheInterface |
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135 | */ |
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136 | public function getCache($reportError = false) |
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147 | |||
148 | /** |
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149 | * @return \Bouncer\Logger\LoggerInterface |
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150 | */ |
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151 | public function getLogger($reportError = false) |
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162 | |||
163 | /** |
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164 | * @return Request |
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165 | */ |
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166 | public function getRequest() |
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176 | |||
177 | /** |
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178 | * @return string |
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179 | */ |
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180 | public function getUserAgent() |
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184 | |||
185 | /** |
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186 | * @return string |
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187 | */ |
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188 | public function getAddr() |
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192 | |||
193 | /** |
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194 | * @return array |
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195 | */ |
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196 | public function getHeaders() |
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210 | |||
211 | /** |
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212 | * @return array |
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213 | */ |
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214 | public function getCookies() |
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222 | |||
223 | /** |
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224 | * Return the current session id |
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225 | * |
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226 | * @return string|null |
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227 | */ |
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228 | public function getSession() |
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234 | |||
235 | /** |
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236 | * Return the protocol of the request: HTTP/1.0 or HTTP/1.1 |
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237 | * |
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238 | * @return string|null |
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239 | */ |
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240 | public function getProtocol() |
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246 | |||
247 | /** |
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248 | * @return Identity |
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249 | */ |
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250 | public function getIdentity() |
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307 | |||
308 | public function getConnection() |
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316 | |||
317 | /* |
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318 | * Init the connection with id, time and start. |
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319 | */ |
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320 | public function initConnection() |
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327 | |||
328 | /* |
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329 | * Complete the connection with end, exec_time, memory_usage and response_status. |
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330 | */ |
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331 | public function completeConnection() |
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356 | |||
357 | /* |
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358 | * Register an analyzer for a given type. |
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359 | * |
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360 | * @param string |
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361 | * @param callable |
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362 | * @param int |
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363 | */ |
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364 | public function registerAnalyzer($type, callable $callable, $priority = 100) |
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368 | |||
369 | /* |
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370 | * Process Analyzers for a given type. Return the modified array or object. |
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371 | * |
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372 | * @param string |
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373 | * @param array|object |
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374 | * |
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375 | * @return array|object |
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376 | */ |
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377 | protected function processAnalyzers($type, $value) |
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388 | |||
389 | /* |
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390 | * Start a Bouncer session |
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391 | */ |
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392 | public function start() |
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407 | |||
408 | /* |
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409 | * Set a cookie containing the session id |
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410 | */ |
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411 | public function initSession() |
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423 | |||
424 | /* |
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425 | * Throttle if Identity status is suspicious. |
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426 | */ |
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427 | public function throttle() |
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448 | |||
449 | /* |
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450 | * Ban if Identity status is bad. |
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451 | */ |
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452 | public function ban() |
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460 | |||
461 | /* |
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462 | * Complete the connection then attempt to log. |
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463 | */ |
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464 | public function end() |
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482 | |||
483 | /* |
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484 | * Log the connection to the logging backend. |
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485 | */ |
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486 | public function log() |
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497 | |||
498 | // Static |
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499 | |||
500 | public static function unavailable() |
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509 | |||
510 | public static function hash($string) |
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514 | |||
515 | } |
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516 |
In PHP, under loose comparison (like
==
, or!=
, orswitch
conditions), values of different types might be equal.For
string
values, the empty string''
is a special case, in particular the following results might be unexpected: