field_encrypt.install in Field Encryption 7

Insallation functions for the Field Encryption module.

File

field_encrypt.install

<?php

/**
 * @file
 * Insallation functions for the Field Encryption module.
 */

/**
 * Implements hook_enable().
 */
function field_encrypt_enable() {

  // Clear the cache of existing data.
  cache_clear_all('*', 'cache_field', TRUE);

  // Set up the new class for this bin.
  $old_cache = variable_get('cache_class_cache_field', NULL);
  variable_set('field_encrypt_old_cache', $old_cache);
  $default_cache_class = variable_get('cache_default_class', 'DrupalDatabaseCache');
  switch ($default_cache_class) {
    case 'DrupalDatabaseCache':
      variable_set('cache_class_cache_field', 'FieldEncryptDatabaseCache');
      break;
    case 'MemCacheDrupal':
      variable_set('cache_class_cache_field', 'FieldEncryptMemCacheDrupal');
      break;
  }
}

/**
 * Implements hook_disable().
 */
function field_encrypt_disable() {

  // Clear the cache of existing data.
  cache_clear_all('*', 'cache_field', TRUE);

  // Set the old class for this bin, if there was one.
  $old_cache = variable_get('field_encrypt_old_cache', NULL);
  if ($old_cache === NULL) {
    variable_del('cache_class_cache_field');
  }
  else {
    variable_set('cache_class_cache_field', $old_cache);
  }
}

/**
 * Update database schema to re-used existing field tables.
 */
function field_encrypt_update_7000() {

  // Get all the current entries.
  $results = db_select('field_encrypt', 'fe')
    ->fields('fe')
    ->execute()
    ->fetchAll();

  // Drop the old database table.
  db_drop_table('field_encrypt');
  if (count($results) > 0) {
    module_load_include('inc', 'field_encrypt');
    $fields = array();
    foreach ($results as $result) {
      if (!isset($fields[$result->field_name])) {
        $fields[$result->field_name] = field_info_field($result->field_name);
      }
      $field_info = $fields[$result->field_name];
      $data = unserialize(field_encrypt_decrypt($result->value));
      $table = key($field_info['storage']['details']['sql'][FIELD_LOAD_CURRENT]);
      unset($result->value);
      foreach ($field_info['storage']['details']['sql'][FIELD_LOAD_CURRENT][$table] as $field) {
        if (isset($data[$field])) {
          $result->{$field} = $data[$field];
        }
      }
      foreach (array(
        FIELD_LOAD_CURRENT,
        FIELD_LOAD_REVISION,
      ) as $key) {
        $table = key($field_info['storage']['details']['sql'][$key]);
        drupal_write_record($table, $result);
      }
    }
  }
  $fields = field_info_fields();
  foreach ($fields as $field_info) {
    if (isset($field_info['settings']['field_encrypt']['encrypt']) && $field_info['settings']['field_encrypt']['encrypt']) {
      module_load_include('inc', 'field_encrypt');
      $has_data = field_has_data($field_info['field_name']);
      field_encrypt_do_encrypt($field_info, $has_data);
    }
  }
}

Functions

Name	Description
field_encrypt_disable	Implements hook_disable().
field_encrypt_enable	Implements hook_enable().
field_encrypt_update_7000	Update database schema to re-used existing field tables.