src/applications/settings/setting/PhabricatorMonospacedFontSetting.php

   1 <?php
   2
   3 final class PhabricatorMonospacedFontSetting
   4   extends PhabricatorStringSetting {
   5
   6   const SETTINGKEY = 'monospaced';
   7
   8   public function getSettingName() {
   9     return pht('Monospaced Font');
  10   }
  11
  12   public function getSettingPanelKey() {
  13     return PhabricatorDisplayPreferencesSettingsPanel::PANELKEY;
  14   }
  15
  16   protected function getSettingOrder() {
  17     return 500;
  18   }
  19
  20   protected function getControlInstructions() {
  21     return pht(
  22       'You can customize the font used when showing monospaced text, '.
  23       'including source code. You should enter a valid CSS font declaration '.
  24       'like: `13px Consolas`');
  25   }
  26
  27   public function validateTransactionValue($value) {
  28     if (!strlen($value)) {
  29       return;
  30     }
  31
  32     $filtered = self::filterMonospacedCSSRule($value);
  33     if ($filtered !== $value) {
  34       throw new Exception(
  35         pht(
  36           'Monospaced font value "%s" is unsafe. You may only enter '.
  37           'letters, numbers, spaces, commas, periods, hyphens, '.
  38           'forward slashes, and double quotes',
  39           $value));
  40     }
  41   }
  42
  43   public static function filterMonospacedCSSRule($monospaced) {
  44     // Prevent the user from doing dangerous things.
  45     return preg_replace('([^a-z0-9 ,"./-]+)i', '', $monospaced);
  46   }
  47
  48 }