Club Drupal

<?php

/**

 * @file

 * masquerade.install

 *

 * Install, uninstall and update hooks for the Masquarade module.

 */

/**

 * Implements hook_schema().

 *

 * @return array

 */

function masquerade_schema() {

  return array(

    'masquerade' => array(

      'description' => 'Each masquerading user has their session recorded into the masquerade table. Each record represents a masquerading user.',

      'fields' => array(

        'sid' => array(

          'description' => 'The current session for this masquerading user corresponding to their {sessions}.sid.',

          'type' => 'varchar',

          'length' => '64',

          'not null' => TRUE,

          'default' => ''),

        'uid_from' => array(

          'description' => 'The {users}.uid corresponding to a session.',

          'type' => 'int',

          'not null' => TRUE,

          'default' => 0,

          'disp-width' => '10'),

        'uid_as' => array(

          'description' => 'The {users}.uid this session is masquerading as.',

          'type' => 'int',

          'not null' => TRUE,

          'default' => 0,

          'disp-width' => '10'),

      ),

      'indexes' => array(

        'sid' => array('sid', 'uid_from'),

        'sid_2' => array('sid', 'uid_as'),

      ),

    ),

    'masquerade_users' => array(

      'description' => 'Per-user permission table granting permissions to switch as a specific user.',

      'fields' => array(

        'uid_from' => array(

          'description' => 'The {users}.uid that can masquerade as {masquerade_users}.uid_to.',

          'type' => 'int',

          'not null' => TRUE,

          'default' => 0,

          'disp-width' => 10,

        ),

        'uid_to' => array(

          'description' => 'The {users}.uid that {masquerade_users}.uid_from can masquerade as.',

          'type' => 'int',

          'not null' => TRUE,

          'default' => 0,

          'disp-width' => 10,

        ),

      ),

      'primary key' => array('uid_from', 'uid_to'),

    ),

  );

}

/**

 * Implements hook_install().

 */

function masquerade_install() {

  db_update('system')

    ->fields(array('weight' => -10))

    ->condition('name', 'masquerade')

    ->execute();

}

/**

 * Implements hook_uninstall().

 */

function masquerade_uninstall() {

  variable_del('masquerade_test_user');

  variable_del('masquerade_admin_roles');

  variable_del('masquerade_quick_switches');

}

/**

 * Reformat variable value.

 */

function masquerade_update_6001() {

  variable_set('masquerade_quick_switches', implode(',', variable_get('masquerade_quick_switches', array())));

}

/**

 * Make the sid column match the length of the core sessions table (64 characters).

 */

function masquerade_update_6002() {

  db_drop_index('masquerade', 'sid');

  db_drop_index('masquerade', 'sid_2');

  db_change_field('masquerade', 'sid', 'sid', array(

    'type' => 'varchar',

    'length' => '64',

    'not null' => TRUE,

    'default' => '')

  );

  db_add_index('masquerade', 'sid', array('sid', 'uid_from'));

  db_add_index('masquerade', 'sid_2', array('sid', 'uid_as'));

}

/**

 * Change masquerade_quick_switches variable to store a serialized array of

 * user ID's. Reverts update 6001.

 */

function masquerade_update_6003() {

  $users = variable_get('masquerade_quick_switches', NULL);

  if (!empty($users)) {

    $user_ids = drupal_explode_tags($users);

    if (!empty($user_ids)) {

      variable_set('masquerade_quick_switches', $user_ids);

    }

  }

  else {

    variable_del('masquerade_quick_switches');

  }

}

/**

 * Set the weight of the masquerade module to -10, but only if it hasn't

 * previously been changed.

 */

function masquerade_update_6004() {

  db_update('system')

    ->fields(array('weight' => -10))

    ->condition('name', 'masquerade')

    ->execute();

}

/**

 * Add a table storing specific user pairings a user can masquerade as.

 */

function masquerade_update_6005() {

  $schema = array(

    'masquerade_users' => array(

      'fields' => array(

        'uid_from' => array(

          'type' => 'int',

          'not null' => TRUE,

          'default' => 0,

          'disp-width' => 10,

        ),

        'uid_to' => array(

          'type' => 'int',

          'not null' => TRUE,

          'default' => 0,

          'disp-width' => 10,

        ),

      ),

      'primary key' => array('uid_from', 'uid_to'),

    )

  );

  db_create_table('masquerade_users', $schema['masquerade_users']);

}

/**

 * Update masquerade block delta.

 */

function masquerade_update_7000() {

  db_update('block')

    ->fields(array('delta' => 'masquerade'))

    ->condition('module', 'masquerade')

    ->condition('delta', 0)

    ->execute();

}

/**

 * Update masquerade block caching.

 */

function masquerade_update_7001() {

  db_update('block')

    ->fields(array('cache' => DRUPAL_NO_CACHE))

    ->condition('module', 'masqurade')

    ->condition('delta', 'masquerade')

    ->execute();

}