Adding uninstall hook to decrypt data.

webform_encrypt.install

@@ -6,9 +6,33 @@
  * module.
  */
 
+/**
+ * Implementation of hook_disable().
+ */
+function webform_encrypt_disable() {
+  drupal_set_message(t('Webform Encrypt has been disabled. However, all submitted data is still encrypted. Please !link to decrypt all data.', array(
+    '!link' => l(t('uninstall the module'), 'admin/modules/uninstall'),
+  )));
+}
+
 /**
  * Implementation of hook_uninstall().
  */
 function webform_encrypt_uninstall() {
   variable_del('webform_encrypt_match_user');
+
+  // Decrypt all encrypted form values.
+  $components = array();
+  $query = db_query('SELECT nid, cid, extra FROM {webform_component}');
+  while ($row = db_fetch_object($query)) {
+    $components[$row->nid . ':' . $row->cid] = unserialize($row->extra);
+  }
+  $query = db_query('SELECT nid, sid, cid, no, data FROM {webform_submitted_data}');
+  while ($row = db_fetch_object($query)) {
+    $key = $row->nid . ':' . $row->cid;
+    if (!empty($components[$key]['encrypt']) && is_array(@unserialize($row->data))) {
+      $row->data = decrypt($row->data, array('base64' => TRUE));
+      drupal_write_record('webform_submitted_data', $row, array('nid', 'sid', 'cid', 'no'));
+    }
+  }
 }