XOOPS /
XoopsCore
| Total Complexity | 59 |
| Total Lines | 601 |
| Duplicated Lines | 0 % |
| Coverage | 98.73% |
| Changes | 0 | ||
Complex classes like Sanitizer 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.
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 Sanitizer, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 30 | class Sanitizer extends SanitizerConfigurable |
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| 31 | { |
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| 32 | /** |
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| 33 | * @var array default configuration values |
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| 34 | */ |
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| 35 | protected static $defaultConfiguration = [ |
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| 36 | 'enabled' => true, |
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| 37 | 'prefilters' => [], |
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| 38 | 'postfilters' => ['embed', 'clickable'], |
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| 39 | ]; |
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| 40 | |||
| 41 | /** |
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| 42 | * @var bool Have extensions been loaded? |
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| 43 | */ |
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| 44 | protected $extensionsLoaded = false; |
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| 45 | |||
| 46 | /** |
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| 47 | * @var ShortCodes |
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| 48 | */ |
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| 49 | protected $shortcodes; |
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| 50 | |||
| 51 | /** |
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| 52 | * @var array |
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| 53 | */ |
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| 54 | protected $patterns = array(); |
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| 55 | |||
| 56 | /** |
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| 57 | * @var Configuration |
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| 58 | */ |
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| 59 | protected $config; |
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| 60 | |||
| 61 | /** |
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| 62 | * @var Sanitizer The reference to *Singleton* instance of this class |
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| 63 | */ |
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| 64 | private static $instance; |
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| 65 | |||
| 66 | /** |
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| 67 | * Returns the *Singleton* instance of this class. |
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| 68 | * |
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| 69 | * @return Sanitizer The *Singleton* instance. |
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| 70 | */ |
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| 71 | 106 | public static function getInstance() |
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| 72 | { |
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| 73 | 106 | if (null === static::$instance) { |
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Bug
introduced
by
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| 74 | static::$instance = new static(); |
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| 75 | } |
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| 76 | |||
| 77 | 106 | return static::$instance; |
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| 78 | } |
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| 79 | |||
| 80 | /** |
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| 81 | * Construct - protected to enforce singleton. The singleton pattern minimizes the |
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| 82 | * impact of the expense of the setup logic. |
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| 83 | */ |
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| 84 | 1 | protected function __construct() |
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| 85 | { |
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| 86 | 1 | $this->shortcodes = new ShortCodes(); |
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| 87 | 1 | $this->config = new Configuration(); |
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| 88 | 1 | } |
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| 89 | |||
| 90 | /** |
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| 91 | * get our ShortCodes instance. This is intended for internal use, as it is just the bare instance. |
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| 92 | * |
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| 93 | * @see getShortCodes |
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| 94 | * |
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| 95 | * @return ShortCodes |
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| 96 | * |
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| 97 | * @throws \ErrorException |
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| 98 | */ |
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| 99 | 75 | public function getShortCodesInstance() |
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| 100 | { |
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| 101 | 75 | return $this->shortcodes; |
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| 102 | } |
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| 103 | |||
| 104 | /** |
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| 105 | * get our ShortCodes instance, but make sure extensions are loaded so caller can extend and override |
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| 106 | * |
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| 107 | * @return ShortCodes |
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| 108 | * |
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| 109 | * @throws \ErrorException |
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| 110 | */ |
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| 111 | 11 | public function getShortCodes() |
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| 112 | { |
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| 113 | 11 | $this->registerExtensions(); |
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| 114 | 11 | return $this->shortcodes; |
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| 115 | } |
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| 116 | |||
| 117 | /** |
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| 118 | * Add a preg_replace_callback pattern and callback |
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| 119 | * |
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| 120 | * @param string $pattern a pattern as used in preg_replace_callback |
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| 121 | * @param callable $callback callback to do processing as used in preg_replace_callback |
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| 122 | * |
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| 123 | * @return void |
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| 124 | */ |
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| 125 | 1 | public function addPatternCallback($pattern, $callback) |
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| 126 | { |
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| 127 | 1 | $this->patterns[] = ['pattern' => $pattern, 'callback' => $callback]; |
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| 128 | 1 | } |
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| 129 | |||
| 130 | /** |
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| 131 | * Replace emoticons in a string with smiley images |
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| 132 | * |
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| 133 | * @param string $text text to filter |
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| 134 | * |
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| 135 | * @return string |
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| 136 | */ |
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| 137 | 16 | public function smiley($text) |
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| 138 | { |
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| 139 | 16 | $response = \Xoops::getInstance()->service('emoji')->renderEmoji($text); |
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| 140 | 16 | return $response->isSuccess() ? $response->getValue() : $text; |
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| 141 | } |
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| 142 | |||
| 143 | |||
| 144 | /** |
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| 145 | * Turn bare URLs and email addresses into links |
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| 146 | * |
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| 147 | * @param string $text text to filter |
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| 148 | * |
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| 149 | * @return string |
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| 150 | */ |
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| 151 | 2 | public function makeClickable($text) |
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| 152 | { |
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| 153 | 2 | return $this->executeFilter('clickable', $text); |
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| 154 | } |
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| 155 | |||
| 156 | /** |
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| 157 | * Convert linebreaks to <br /> tags |
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| 158 | * |
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| 159 | * This is used instead of PHP's built-in nl2br() because it removes the line endings, replacing them |
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| 160 | * with br tags, while the built in just adds br tags and leaves the line endings. We don't want to leave |
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| 161 | * those, as something may try to process them again. |
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| 162 | * |
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| 163 | * @param string $text text |
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| 164 | * |
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| 165 | * @return string |
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| 166 | */ |
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| 167 | 17 | public function nl2Br($text) |
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| 170 | } |
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| 171 | |||
| 172 | /** |
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| 173 | * Convert special characters to HTML entities |
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| 174 | * |
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| 175 | * Character set is locked to 'UTF-8', double_encode to true |
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| 176 | * |
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| 177 | * @param string $text string being converted |
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| 178 | * @param int $quote_style ENT_QUOTES | ENT_SUBSTITUTE will forced |
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| 179 | * |
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| 180 | * @return string |
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| 181 | */ |
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| 182 | 76 | public function htmlSpecialChars($text, $quote_style = ENT_QUOTES) |
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| 183 | { |
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| 184 | 76 | $text = htmlspecialchars($text, $quote_style | ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8', false); |
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| 185 | 76 | return $text; |
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| 186 | } |
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| 187 | |||
| 188 | /** |
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| 189 | * Convert special characters to HTML entities with special attention to quotes for strings which |
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| 190 | * may be used in a javascript context. |
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| 191 | * |
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| 192 | * Escape double quote as \x22 , single as \x27, and then send to htmlSpecialChars(). |
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| 193 | * |
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| 194 | * @param string $text string being converted |
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| 195 | * |
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| 196 | * @return string |
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| 197 | */ |
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| 198 | 12 | public function escapeForJavascript($text) |
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| 199 | { |
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| 200 | 12 | $text = str_replace(["'", '"'], ['\x27', '\x22'], $text); |
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| 201 | 12 | return $this->htmlSpecialChars($text); |
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| 202 | } |
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| 203 | |||
| 204 | /** |
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| 205 | * Escape any brackets ([]) to make them invisible to ShortCodes |
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| 206 | * |
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| 207 | * @param string $text string to escape |
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| 208 | * |
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| 209 | * @return string |
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| 210 | */ |
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| 211 | 1 | public function escapeShortCodes($text) |
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| 212 | { |
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| 213 | 1 | $text = str_replace(['[', ']'], ['[', ']'], $text); |
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| 214 | 1 | return $text; |
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| 215 | } |
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| 216 | |||
| 217 | /** |
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| 218 | * Reverses htmlSpecialChars() |
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| 219 | * |
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| 220 | * @param string $text htmlSpecialChars encoded text |
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| 221 | * |
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| 222 | * @return string |
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| 223 | */ |
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| 224 | 4 | public function undoHtmlSpecialChars($text) |
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| 225 | { |
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| 226 | 4 | return htmlspecialchars_decode($text, ENT_QUOTES); |
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| 227 | } |
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| 228 | |||
| 229 | /** |
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| 230 | * Apply extension specified transformation, such as ShortCodes, to the supplied text |
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| 231 | * |
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| 232 | * @param string $text text to filter |
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| 233 | * @param bool $allowImage Allow images in the text? On FALSE, uses links to images. |
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| 234 | * |
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| 235 | * @return string |
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| 236 | */ |
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| 237 | 15 | protected function xoopsCodeDecode($text, $allowImage = false) |
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| 258 | } |
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| 259 | |||
| 260 | /** |
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| 261 | * Filters data for display |
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| 262 | * |
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| 263 | * @param string $text text to filter for display |
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| 264 | * @param bool $html allow html? |
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| 265 | * @param bool $smiley allow smileys? |
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| 266 | * @param bool $xcode allow xoopscode (and shortcodes)? |
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| 267 | * @param bool $image allow inline images? |
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| 268 | * @param bool $br convert linebreaks? |
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| 269 | * |
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| 270 | * @return string |
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| 271 | */ |
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| 272 | 15 | public function filterForDisplay($text, $html = false, $smiley = true, $xcode = true, $image = true, $br = true) |
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| 273 | { |
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| 274 | 15 | $config = $this->getConfig(); |
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| 275 | |||
| 276 | 15 | foreach ((array) $config['prefilters'] as $filter) { |
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| 277 | $text = $this->executeFilter($filter, $text); |
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| 278 | } |
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| 279 | |||
| 280 | 15 | if (!(bool) $html) { |
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| 281 | // html not allowed, so escape any special chars |
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| 282 | // don't mess with quotes or shortcodes will fail |
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| 283 | 14 | $text = htmlspecialchars($text, ENT_NOQUOTES | ENT_SUBSTITUTE, 'UTF-8', false); |
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| 284 | } |
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| 285 | |||
| 286 | 15 | if ($xcode) { |
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| 287 | 15 | $text = $this->prefilterCodeBlocks($text); |
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| 288 | 15 | $text = $this->xoopsCodeDecode($text, (bool) $image); |
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| 289 | } |
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| 290 | 15 | if ((bool) $smiley) { |
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| 291 | // process smiley |
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| 292 | 15 | $text = $this->smiley($text); |
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| 293 | } |
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| 294 | 15 | if ((bool) $br) { |
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| 295 | 15 | $text = $this->nl2Br($text); |
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| 296 | } |
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| 297 | 15 | if ($xcode) { |
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| 298 | 15 | $text = $this->postfilterCodeBlocks($text); |
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| 299 | } |
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| 300 | |||
| 301 | 15 | foreach ((array) $config['postfilters'] as $filter) { |
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| 302 | 15 | $text = $this->executeFilter($filter, $text); |
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| 303 | } |
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| 304 | |||
| 305 | 15 | return $text; |
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| 306 | } |
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| 307 | |||
| 308 | /** |
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| 309 | * Filters textarea form data submitted for preview |
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| 310 | * |
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| 311 | * @param string $text text to filter for display |
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| 312 | * @param bool $html allow html? |
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| 313 | * @param bool $smiley allow smileys? |
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| 314 | * @param bool $xcode allow xoopscode? |
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| 315 | * @param bool $image allow inline images? |
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| 316 | * @param bool $br convert linebreaks? |
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| 317 | * |
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| 318 | * @return string |
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| 319 | * |
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| 320 | * @todo remove as it adds no value |
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| 321 | */ |
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| 322 | 1 | public function displayTarea($text, $html = false, $smiley = true, $xcode = true, $image = true, $br = true) |
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| 323 | { |
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| 324 | 1 | return $this->filterForDisplay($text, $html, $smiley, $xcode, $image, $br); |
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| 325 | } |
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| 326 | |||
| 327 | /** |
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| 328 | * Filters textarea form data submitted for preview |
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| 329 | * |
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| 330 | * @param string $text text to filter for preview |
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| 331 | * @param int $html allow html? |
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| 332 | * @param int $smiley allow smileys? |
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| 333 | * @param int $xcode allow xoopscode? |
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| 334 | * @param int $image allow inline images? |
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| 335 | * @param int $br convert linebreaks? |
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| 336 | * |
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| 337 | * @return string |
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| 338 | * |
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| 339 | * @todo remove as it adds no value |
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| 340 | */ |
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| 341 | 1 | public function previewTarea($text, $html = 0, $smiley = 1, $xcode = 1, $image = 1, $br = 1) |
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| 342 | { |
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| 343 | 1 | return $this->filterForDisplay($text, $html, $smiley, $xcode, $image, $br); |
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| 344 | } |
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| 345 | |||
| 346 | /** |
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| 347 | * Replaces banned words in a string with their replacements |
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| 348 | * |
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| 349 | * @param string $text text to censor |
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| 350 | * |
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| 351 | * @return string |
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| 352 | */ |
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| 353 | 7 | public function censorString($text) |
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| 354 | { |
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| 355 | 7 | return $this->executeFilter('censor', $text); |
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| 356 | } |
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| 357 | |||
| 358 | /** |
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| 359 | * Encode [code] elements as base64 to prevent processing of contents by other filters |
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| 360 | * |
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| 361 | * @param string $text text to filter |
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| 362 | * |
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| 363 | * @return string |
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| 364 | */ |
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| 365 | 15 | protected function prefilterCodeBlocks($text) |
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| 366 | { |
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| 367 | 15 | $patterns = "/\[code([^\]]*?)\](.*)\[\/code\]/sU"; |
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| 368 | 15 | $text = preg_replace_callback( |
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| 369 | 15 | $patterns, |
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| 370 | 15 | function ($matches) { |
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| 371 | 1 | return '[code' . $matches[1] . ']' . base64_encode($matches[2]). '[/code]'; |
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| 372 | 15 | }, |
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| 373 | 15 | $text |
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| 374 | ); |
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| 375 | |||
| 376 | 15 | return $text; |
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| 377 | } |
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| 378 | |||
| 379 | /** |
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| 380 | * convert code blocks, previously processed by prefilterCodeBlocks(), for display |
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| 381 | * |
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| 382 | * @param string $text text to filter |
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| 383 | * |
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| 384 | * @return string |
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| 385 | */ |
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| 386 | 15 | protected function postfilterCodeBlocks($text) |
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| 387 | { |
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| 388 | 15 | $patterns = "/\[code([^\]]*?)\](.*)\[\/code\]/sU"; |
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| 389 | 15 | $text = preg_replace_callback( |
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| 390 | 15 | $patterns, |
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| 391 | 15 | function ($matches) { |
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| 392 | return '<div class=\"xoopsCode\">' . |
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| 393 | 1 | $this->executeFilter( |
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| 394 | 1 | 'syntaxhighlight', |
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| 395 | 1 | str_replace('\\\"', '\"', base64_decode($matches[2])), |
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| 396 | 1 | $matches[1] |
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| 397 | 1 | ) . '</div>'; |
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| 398 | 15 | }, |
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| 399 | 15 | $text |
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| 400 | ); |
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| 401 | |||
| 402 | 15 | return $text; |
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| 403 | } |
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| 404 | |||
| 405 | /** |
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| 406 | * listExtensions() - get list of active extensions |
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| 407 | * |
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| 408 | * @return string[] |
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| 409 | */ |
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| 410 | 23 | public function listExtensions() |
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| 411 | { |
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| 412 | 23 | $list = []; |
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| 413 | 23 | foreach ($this->config as $name => $configs) { |
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| 414 | 23 | if (((bool) $configs['enabled']) && $configs['type'] === 'extension') { |
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| 415 | 23 | $list[] = $name; |
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| 416 | } |
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| 417 | } |
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| 418 | 23 | return $list; |
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| 419 | } |
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| 420 | |||
| 421 | /** |
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| 422 | * Provide button and javascript code used by the DhtmlTextArea |
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| 423 | * |
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| 424 | * @param string $extension extension name |
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| 425 | * @param string $textAreaId dom element id |
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| 426 | * |
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| 427 | * @return string[] editor button as HTML, supporting javascript |
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| 428 | */ |
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| 429 | 4 | public function getDhtmlEditorSupport($extension, $textAreaId) |
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| 430 | { |
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| 431 | 4 | return $this->loadExtension($extension)->getDhtmlEditorSupport($textAreaId); |
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| 432 | } |
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| 433 | |||
| 434 | /** |
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| 435 | * getConfig() - get the configuration for a component (extension, filter, sanitizer) |
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| 436 | * |
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| 437 | * @param string $componentName get the configuration for component of this name |
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| 438 | * |
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| 439 | * @return array |
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| 440 | */ |
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| 441 | 74 | public function getConfig($componentName = 'sanitizer') |
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| 442 | { |
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| 443 | 74 | return $this->config->get(strtolower($componentName), []); |
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| 444 | } |
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| 445 | |||
| 446 | /** |
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| 447 | * registerExtensions() |
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| 448 | * |
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| 449 | * This sets up the shortcode processing that will be applied to text to be displayed |
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| 450 | * |
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| 451 | * @return void |
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| 452 | */ |
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| 453 | 26 | protected function registerExtensions() |
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| 454 | { |
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| 455 | 26 | if (!$this->extensionsLoaded) { |
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| 456 | 20 | $this->extensionsLoaded = true; |
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| 457 | 20 | $extensions = $this->listExtensions(); |
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| 458 | |||
| 459 | // we need xoopscode to be called first |
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| 460 | 20 | $key = array_search('xoopscode', $extensions); |
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| 461 | 20 | if ($key !== false) { |
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| 462 | 20 | unset($extensions[$key]); |
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| 463 | } |
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| 464 | 20 | $this->registerExtension('xoopscode'); |
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| 465 | |||
| 466 | 20 | foreach ($extensions as $extension) { |
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| 467 | 20 | $this->registerExtension($extension); |
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| 468 | } |
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| 469 | |||
| 470 | /** |
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| 471 | * Register any custom shortcodes |
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| 472 | * |
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| 473 | * Listeners will be passed the ShortCodes object as the single argument, and should |
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| 474 | * call $arg->addShortcode() to add any shortcodes |
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| 475 | * |
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| 476 | * NB: The last definition for a shortcode tag wins. Defining a shortcode here, with |
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| 477 | * the same name as a standard system shortcode will override the system definition. |
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| 478 | * This feature is very powerful, so play nice. |
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| 479 | */ |
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| 480 | 20 | \Xoops::getInstance()->events()->triggerEvent('core.sanitizer.shortcodes.add', $this->shortcodes); |
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| 481 | } |
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| 482 | 26 | } |
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| 483 | |||
| 484 | /** |
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| 485 | * Load a named component from specification in configuration |
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| 486 | * |
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| 487 | * @param string $name name of component to load |
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| 488 | * |
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| 489 | * @return object|null |
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| 490 | */ |
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| 491 | 42 | protected function loadComponent($name) |
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| 492 | { |
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| 493 | 42 | $component = null; |
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| 494 | 42 | $config = $this->getConfig($name); |
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| 495 | 42 | if (isset($config['configured_class']) && class_exists($config['configured_class'])) { |
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| 496 | 39 | $component = new $config['configured_class']($this); |
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| 497 | } |
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| 498 | 42 | return $component; |
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| 499 | } |
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| 500 | |||
| 501 | /** |
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| 502 | * Load an extension by name |
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| 503 | * |
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| 504 | * @param string $name extension name |
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| 505 | * |
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| 506 | * @return Sanitizer\ExtensionAbstract |
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| 507 | */ |
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| 508 | 23 | protected function loadExtension($name) |
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| 509 | { |
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| 510 | 23 | $extension = $this->loadComponent($name); |
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| 511 | 23 | if (!($extension instanceof Sanitizer\ExtensionAbstract)) { |
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| 512 | 2 | $extension = new Sanitizer\NullExtension($this); |
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| 513 | } |
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| 514 | 23 | return $extension; |
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| 515 | } |
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| 516 | |||
| 517 | /** |
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| 518 | * Load a filter by name |
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| 519 | * |
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| 520 | * @param string $name name of filter to load |
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| 521 | * |
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| 522 | * @return Sanitizer\FilterAbstract |
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| 523 | */ |
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| 524 | 37 | protected function loadFilter($name) |
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| 525 | { |
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| 526 | 37 | $filter = $this->loadComponent($name); |
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| 527 | 37 | if (!($filter instanceof Sanitizer\FilterAbstract)) { |
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| 528 | 2 | $filter = new Sanitizer\NullFilter($this); |
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| 529 | } |
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| 530 | 37 | return $filter; |
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| 531 | } |
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| 532 | |||
| 533 | /** |
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| 534 | * execute an extension |
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| 535 | * |
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| 536 | * @param string $name extension name |
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| 537 | * |
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| 538 | * @return mixed |
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| 539 | */ |
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| 540 | 20 | protected function registerExtension($name) |
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| 545 | } |
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| 546 | |||
| 547 | /** |
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| 548 | * execute a filter |
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| 549 | * |
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| 550 | * @param string $name extension name |
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| 551 | * |
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| 552 | * @return mixed |
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| 553 | */ |
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| 554 | 37 | public function executeFilter($name) |
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| 555 | { |
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| 556 | 37 | $filter = $this->loadFilter($name); |
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| 557 | 37 | $args = array_slice(func_get_args(), 1); |
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| 558 | 37 | return call_user_func_array(array($filter, 'applyFilter'), $args); |
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| 559 | } |
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| 560 | |||
| 561 | /** |
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| 562 | * Filter out possible malicious text with the textfilter filter |
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| 563 | * |
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| 564 | * @param string $text text to filter |
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| 565 | * @param bool $force force filtering |
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| 566 | * |
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| 567 | * @return string filtered text |
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| 568 | */ |
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| 569 | 2 | public function textFilter($text, $force = false) |
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| 570 | { |
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| 571 | 2 | return $this->executeFilter('textfilter', $text, $force); |
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| 572 | } |
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| 573 | |||
| 574 | /** |
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| 575 | * Filter out possible malicious text with the xss filter |
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| 576 | * |
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| 577 | * @param string $text text to filter |
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| 578 | * |
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| 579 | * @return string filtered text |
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| 580 | */ |
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| 581 | 2 | public function filterXss($text) |
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| 582 | { |
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| 583 | 2 | return $this->executeFilter('xss', $text); |
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| 584 | } |
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| 585 | |||
| 586 | /** |
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| 587 | * Test a string against an enumeration list. |
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| 588 | * |
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| 589 | * @param string $text string to check |
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| 590 | * @param string[] $enumSet strings to match (case insensitive) |
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| 591 | * @param string $default default value is no match |
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| 592 | * @param bool $firstLetter match first letter only |
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| 593 | * |
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| 594 | * @return mixed matched string, or default if no match |
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| 595 | */ |
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| 596 | 1 | public function cleanEnum($text, $enumSet, $default = '', $firstLetter = false) |
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| 614 | } |
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| 615 | |||
| 616 | /** |
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| 617 | * Force a component to be enabled. |
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| 618 | * |
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| 619 | * Note: This is intended to support testing, and is not recommended for any regular use |
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| 620 | * |
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| 621 | * @param string $name component to enable |
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| 622 | */ |
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| 623 | 19 | public function enableComponentForTesting($name) |
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| 624 | { |
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| 625 | 19 | if ($this->config->has($name)) { |
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| 631 | } |
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| 632 | 19 | } |
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| 633 | } |
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| 634 |
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