public static function LdapServer::removeUnchangedAttributes in Lightweight Directory Access Protocol (LDAP) 7.2

Same name and namespace in other branches

1. 8.2 ldap_servers/LdapServer.class.php \LdapServer::removeUnchangedAttributes()

Compares 2 LDAP entries and returns the difference.

Given 2 ldap entries, old and new, removes unchanged values to avoid security errors and incorrect date modified.

Parameters

array $new_entry: LDAP entry array in form <attribute> => <value>, or <attribute> => array(<value1>, <value2>, ...).

array $old_entry: LDAP entry in form <attribute> => array('count' => N, <value1>, <value2>, ...).

Return value

array The $new_entry with unchanged attributes removed.

See also

\LdapServer::modifyLdapEntry()

1 call to LdapServer::removeUnchangedAttributes()

LdapServer::modifyLdapEntry in ldap_servers/LdapServer.class.php

Modify attributes of ldap entry.

File

ldap_servers/LdapServer.class.php, line 584

Defines server classes and related functions.

Class

LdapServer

LDAP Server Class.

Code

public static function removeUnchangedAttributes($new_entry, $old_entry) {
  foreach ($new_entry as $key => $new_val) {
    $old_value = FALSE;
    $old_value_is_scalar = FALSE;
    $key_lcase = drupal_strtolower($key);
    if (isset($old_entry[$key_lcase])) {
      if ($old_entry[$key_lcase]['count'] == 1) {
        $old_value = $old_entry[$key_lcase][0];
        $old_value_is_scalar = TRUE;
      }
      else {
        unset($old_entry[$key_lcase]['count']);
        $old_value = $old_entry[$key_lcase];
        $old_value_is_scalar = FALSE;
      }
    }

    // Identical multivalued attributes.
    if (is_array($new_val) && is_array($old_value) && count(array_diff($new_val, $old_value)) == 0) {
      unset($new_entry[$key]);
    }
    elseif ($old_value_is_scalar && !is_array($new_val) && drupal_strtolower($old_value) == drupal_strtolower($new_val)) {

      // don't change values that aren't changing to avoid false permission constraints.
      unset($new_entry[$key]);
    }
  }
  return $new_entry;
}