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   1  <?php
   2  
   3  function color_requirements($phase) {
   4    $requirements = array();
   5  
   6    if ($phase == 'runtime') {
   7      // Check GD library
   8      if (function_exists('imagegd2')) {
   9        $info = gd_info();
  10        $requirements['gd'] = array(
  11          'value' => $info['GD Version'],
  12        );
  13  
  14        // Check PNG support
  15        if (function_exists('imagecreatefrompng')) {
  16          $requirements['gd']['severity'] = REQUIREMENT_OK;
  17        }
  18        else {
  19          $requirements['gd']['severity'] = REQUIREMENT_ERROR;
  20          $requirements['gd']['description'] = t('The GD library for PHP is enabled, but was compiled without PNG support. Please check the <a href="@url">PHP image documentation</a> for information on how to correct this.', array('@url' => 'http://www.php.net/manual/en/ref.image.php'));
  21        }
  22      }
  23      else {
  24        $requirements['gd'] = array(
  25          'value' => t('Not installed'),
  26          'severity' => REQUIREMENT_ERROR,
  27          'description' => t('The GD library for PHP is missing or outdated. Please check the <a href="@url">PHP image documentation</a> for information on how to correct this.', array('@url' => 'http://www.php.net/manual/en/ref.image.php')),
  28        );
  29      }
  30      $requirements['gd']['title'] = t('GD library');
  31    }
  32  
  33    return $requirements;
  34  }
  35  
  36  /**
  37   * Warn site administrator if unsafe CSS color codes are found in the database.
  38   */
  39  function color_update_6001() {
  40    $ret = array();
  41    $result = db_query("SELECT name FROM {variable} WHERE name LIKE 'color_%_palette'");
  42    while ($variable = db_fetch_array($result)) {
  43      $palette = variable_get($variable['name'], array());
  44      foreach ($palette as $key => $color) {
  45        if (!preg_match('/^#([a-f0-9]{3}){1,2}$/iD', $color)) {
  46          drupal_set_message('Some of the custom CSS color codes specified via the color module are invalid. Please examine the themes which are making use of the color module at the <a href="'. url('admin/appearance/settings') .'">Appearance settings</a> page to verify their CSS color values.', 'warning');
  47        }
  48      }
  49    }
  50    return $ret;
  51  }