Club Drupal

<?php

/**

 * @file

 * Submission handling functions.

 *

 * This file is loaded when handling submissions, either submitting new,

 * editing, or viewing. It also contains all CRUD functions for submissions.

 *

 * @author Nathan Haug <nate@lullabot.com>

 */

/**

 * Given an array of submitted values, flatten it into data for a submission.

 *

 * @param $node

 *   The node object containing the current webform.

 * @param $submitted

 *   The submitted user values from the webform.

 *

 * @return array

 *   An array suitable for use in the 'data' property of a $submission object.

 */

function webform_submission_data($node, $submitted) {

  $data = array();

  foreach ($submitted as $cid => $values) {

    // Don't save pseudo-fields or pagebreaks as submitted data.

    if (!isset($node->webform['components'][$cid]) || $node->webform['components'][$cid]['type'] == 'pagebreak') {

      continue;

    }

    if (is_array($values)) {

      $data[$cid] = $values;

    }

    else {

      $data[$cid][0] = $values;

    }

  }

  return $data;

}

/**

 * Given set of $form_state values, prepare a psuedo-submission.

 *

 * @param object $node

 *   The webform node object.

 * @param object $account

 *   The user account that is creating this submission.

 * @param array $form_state

 *   The form_state containing the values for the submission.

 * @param object $prototype

 *   An existing submission that is being previewed, if any.

 *

 * @return object

 *   A new submission object, possibly for preview

 */

function webform_submission_create($node, $account, array $form_state, $is_preview = FALSE, $prototype = NULL) {

  $data = webform_submission_data($node, $form_state['values']['submitted']);

  if (is_object($prototype)) {

    $submission = clone $prototype;

    $submission->preview = $is_preview;

    $submission->data = $data;

  }

  else {

    $submission = (object) array(

      'nid' => $node->nid,

      'uid' => $account->uid,

      'sid' => NULL,

      'submitted' => REQUEST_TIME,

      'completed' => 0,

      'modified' => REQUEST_TIME,

      'remote_addr' => webform_ip_address($node),

      'is_draft' => TRUE,

      'highest_valid_page' => 0,

      'preview' => $is_preview,

      'serial' => NULL,

      'data' => $data,

    );

    drupal_alter('webform_submission_create', $submission, $node, $account, $form_state);

  }

  return $submission;

}

/**

 * Update a webform submission entry in the database.

 *

 * @param $node

 *   The node object containing the current webform.

 * @param $submission

 *   The webform submission object to be saved into the database.

 *

 * @return int

 *   The existing submission SID.

 */

function webform_submission_update($node, $submission) {

  // Allow other modules to modify the submission before saving.

  foreach (module_implements('webform_submission_presave') as $module) {

    $function = $module . '_webform_submission_presave';

    $function($node, $submission);

  }

  $submission->completed = empty($submission->completed) && !$submission->is_draft ? REQUEST_TIME : $submission->completed;

  $submission->modified = REQUEST_TIME;

  // Update the main submission info.

  drupal_write_record('webform_submissions', $submission, 'sid');

  // If is draft, only delete data for components submitted, to

  // preserve any data from form pages not visited in this submission.

  if ($submission->is_draft) {

    $submitted_cids = array_keys($submission->data);

    if ($submitted_cids) {

      db_delete('webform_submitted_data')

        ->condition('sid', $submission->sid)

        ->condition('cid', $submitted_cids, 'IN')

        ->execute();

    }

  }

  else {

    db_delete('webform_submitted_data')

      ->condition('sid', $submission->sid)

      ->execute();

  }

  // Then re-add submission data to the database.

  $submission->is_new = FALSE;

  webform_submission_insert($node, $submission);

  module_invoke_all('webform_submission_update', $node, $submission);

  return $submission->sid;

}

/**

 * Insert a webform submission entry in the database.

 *

 * @param $node

 *   The node object containing the current webform.

 * @param $submission

 *   The webform submission object to be saved into the database.

 *

 * @return int

 *   The new submission SID.

 */

function webform_submission_insert($node, $submission) {

  // The submission ID may already be set if being called as an update.

  if (!isset($submission->sid) && (!isset($submission->is_new) || $submission->is_new == FALSE)) {

    // Allow other modules to modify the submission before saving.

    foreach (module_implements('webform_submission_presave') as $module) {

      $function = $module . '_webform_submission_presave';

      $function($node, $submission);

    }

    $submission->nid = $node->webform['nid'];

    if (empty($submission->serial)) {

      $submission->serial = _webform_submission_serial_next_value($node->nid);

    }

    $submission->completed = empty($submission->completed) && !$submission->is_draft ? REQUEST_TIME : $submission->completed;

    drupal_write_record('webform_submissions', $submission);

    $is_new = TRUE;

  }

  foreach ($submission->data as $cid => $values) {

    foreach ($values as $delta => $value) {

      $data = array(

        'nid' => $node->webform['nid'],

        'sid' => $submission->sid,

        'cid' => $cid,

        'no' => $delta,

        'data' => is_null($value) ? '' : $value,

      );

      drupal_write_record('webform_submitted_data', $data);

    }

  }

  // Invoke the insert hook after saving all the data.

  if (isset($is_new)) {

    module_invoke_all('webform_submission_insert', $node, $submission);

  }

  return $submission->sid;

}

/**

 * Delete a single submission.

 *

 * @param $node

 *   The node object containing the current webform.

 * @param $submission

 *   The webform submission object to be deleted from the database.

 */

function webform_submission_delete($node, $submission) {

  // Iterate through all components and let each do cleanup if necessary.

  foreach ($node->webform['components'] as $cid => $component) {

    if (isset($submission->data[$cid])) {

      webform_component_invoke($component['type'], 'delete', $component, $submission->data[$cid]);

    }

  }

  // Delete any anonymous session information.

  if (isset($_SESSION['webform_submission'][$submission->sid])) {

    unset($_SESSION['webform_submission'][$submission->sid]);

  }

  db_delete('webform_submitted_data')

    ->condition('nid', $node->nid)

    ->condition('sid', $submission->sid)

    ->execute();

  db_delete('webform_submissions')

    ->condition('nid', $node->nid)

    ->condition('sid', $submission->sid)

    ->execute();

  module_invoke_all('webform_submission_delete', $node, $submission);

}

/**

 * Send related e-mails related to a submission.

 *

 * This function is usually invoked when a submission is completed, but may be

 * called any time e-mails should be redelivered.

 *

 * @param $node

 *   The node object containing the current webform.

 * @param $submission

 *   The webform submission object to be used in sending e-mails.

 * @param $emails

 *   (optional) An array of specific e-mail settings to be used. If omitted, all

 *   e-mails in $node->webform['emails'] will be sent.

 *

 * @return int

 *   Number of mail sent.

 */

function webform_submission_send_mail($node, $submission, $emails = NULL) {

  global $user;

  // Get the list of e-mails we'll be sending.

  $emails = isset($emails) ? $emails : $node->webform['emails'];

  // Create a themed message for mailing.

  $send_count = 0;

  foreach ($emails as $eid => $email) {

    // Continue with next email recipients array if disabled for current.

    if (!$email['status']) {

      continue;

    }

    // Set the HTML property based on availablity of MIME Mail.

    $email['html'] = ($email['html'] && webform_variable_get('webform_email_html_capable'));

    // Pass through the theme layer if using the default template.

    if ($email['template'] == 'default') {

      $email['message'] = theme(array('webform_mail_' . $node->nid, 'webform_mail', 'webform_mail_message'), array('node' => $node, 'submission' => $submission, 'email' => $email));

    }

    else {

      $email['message'] = $email['template'];

    }

    // Replace tokens in the message.

    $email['message'] = webform_replace_tokens($email['message'], $node, $submission, $email, (boolean) $email['html']);

    // Build the e-mail headers.

    $email['headers'] = theme(array('webform_mail_headers_' . $node->nid, 'webform_mail_headers'), array('node' => $node, 'submission' => $submission, 'email' => $email));

    // Assemble the From string.

    if (isset($email['headers']['From'])) {

      // If a header From is already set, don't override it.

      $email['from'] = $email['headers']['From'];

      unset($email['headers']['From']);

    }

    else {

      // Format the From address.

      $mapping = isset($email['extra']['from_address_mapping']) ? $email['extra']['from_address_mapping'] : NULL;

      $email['from'] = webform_format_email_address($email['from_address'], $email['from_name'], $node, $submission, TRUE, TRUE, NULL, $mapping);

    }

    // If requested and not already set, set Reply-To to the From and re-format From address.

    if (webform_variable_get('webform_email_replyto') &&

        empty($email['headers']['Reply-To']) &&

        ($default_from_name = webform_variable_get('webform_default_from_name')) &&

        ($default_from_address = webform_variable_get('webform_default_from_address')) &&

        ($default_from_parts = explode('@', $default_from_address)) &&

        count($default_from_parts) == 2 &&

        $default_from_parts[1] &&

        stripos($email['from'], '@' . $default_from_parts[1]) === FALSE) {

      // Message is not already being sent from the domain of the default

      // webform from address.

      $email['headers']['Reply-To'] = $email['from'];

      $email['from'] = $default_from_address;

      if (webform_variable_get('webform_email_address_format') == 'long') {

        $email_parts = webform_parse_email_address($email['headers']['Reply-To']);

        $from_name = t('!name via !site_name',

                        array(

                          '!name' => strlen($email_parts['name']) ? $email_parts['name'] : $email_parts['address'],

                          '!site_name' => $default_from_name,

                        ));

        $from_name = implode(' ', array_map('mime_header_encode', explode(' ', $from_name)));

        $email['from'] = '"' . $from_name . '" <' . $email['from'] . '>';

      }

    }

    // Update the subject if set in the themed headers.

    if (isset($email['headers']['Subject'])) {

      $email['subject'] = $email['headers']['Subject'];

      unset($email['headers']['Subject']);

    }

    else {

      $email['subject'] = webform_format_email_subject($email['subject'], $node, $submission);

    }

    // Update the to e-mail if set in the themed headers.

    if (isset($email['headers']['To'])) {

      $email['email'] = $email['headers']['To'];

      unset($email['headers']['To']);

      $addresses = array_filter(explode(',', $email['email']));

    }

    else {

      // Format the To address(es).

      $mapping = isset($email['extra']['email_mapping']) ? $email['extra']['email_mapping'] : NULL;

      $addresses = webform_format_email_address($email['email'], NULL, $node, $submission, TRUE, FALSE, NULL, $mapping);

      $email['email'] = implode(',', $addresses);

    }

    // Generate the list of addresses that this e-mail will be sent to.

    $addresses_final = array_filter($addresses, 'webform_valid_email_address');

    if (!$addresses_final) {

      continue;

    }

    // Verify that this submission is not attempting to send any spam hacks.

    foreach ($addresses_final as $address) {

      if (_webform_submission_spam_check($address, $email['subject'], $email['from'], $email['headers'])) {

        watchdog('webform', 'Possible spam attempt from @remote !message',

          array('@remote' => ip_address(), '!message' => "<br />\n" . nl2br(htmlentities($email['message']))));

        drupal_set_message(t('Illegal information. Data not submitted.'), 'error');

        return FALSE;

      }

    }

    // Consolidate addressees into one message if permitted by configuration.

    $send_increment = 1;

    if (!webform_variable_get('webform_email_address_individual')) {

      $send_increment = count($addresses_final);

      $addresses_final = array(implode(', ', $addresses_final));

    }

    // Mail the webform results.

    foreach ($addresses_final as $address) {

      $language = $user->uid ? user_preferred_language($user) : language_default();

      $mail_params = array(

        'message' => $email['message'],

        'subject' => $email['subject'],

        'headers' => $email['headers'],

        'node' => $node,

        'submission' => $submission,

        'email' => $email,

      );

      if (webform_variable_get('webform_email_html_capable')) {

        // Load attachments for the e-mail.

        $attachments = array();

        if ($email['attachments']) {

          webform_component_include('file');

          foreach ($node->webform['components'] as $component) {

            if (webform_component_feature($component['type'], 'attachment') && !empty($submission->data[$component['cid']][0])) {

              if (webform_component_implements($component['type'], 'attachments')) {

                $files = webform_component_invoke($component['type'], 'attachments', $component, $submission->data[$component['cid']]);

                if ($files) {

                  $attachments = array_merge($attachments, $files);

                }

              }

            }

          }

        }

        // Add the attachments to the mail parameters.

        $mail_params['attachments'] = $attachments;

        // Set all other properties for HTML e-mail handling.

        $mail_params['plain'] = !$email['html'];

        $mail_params['plaintext'] = $email['html'] ? NULL : $email['message'];

        $mail_params['headers'] = $email['headers'];

        if ($email['html']) {

          // MIME Mail requires this header or it will filter all text.

          $mail_params['headers']['Content-Type'] = 'text/html; charset=UTF-8';

        }

      }

      // Mail the submission.

      $message = drupal_mail('webform', 'submission', $address, $language, $mail_params, $email['from']);

      if ($message['result']) {

        $send_count += $send_increment;

      }

    }

  }

  return $send_count;

}

/**

 * Confirm form to delete a single form submission.

 *

 * @param $form

 *   The new form array.

 * @param $form_state

 *   The current form state.

 * @param $node

 *   The node for which this webform was submitted.

 * @param $submission

 *   The submission to be deleted (from webform_submitted_data).

 */

function webform_submission_delete_form($form, $form_state, $node, $submission) {

  webform_set_breadcrumb($node, $submission);

  // Set the correct page title.

  drupal_set_title(webform_submission_title($node, $submission));

  // Keep the NID and SID in the same location as the webform_client_form().

  $form['#tree'] = TRUE;

  $form['details']['nid'] = array(

    '#type' => 'value',

    '#value' => $node->nid,

  );

  $form['details']['sid'] = array(

    '#type' => 'value',

    '#value' => $submission->sid,

  );

  $question = t('Are you sure you want to delete this submission?');

  return confirm_form($form, NULL, "node/{$node->nid}/submission/{$submission->sid}", $question, t('Delete'), t('Cancel'));

}

/**

 *

 */

function webform_submission_delete_form_submit($form, &$form_state) {

  $node = node_load($form_state['values']['details']['nid']);

  $submission = webform_get_submission($form_state['values']['details']['nid'], $form_state['values']['details']['sid']);

  webform_submission_delete($node, $submission);

  drupal_set_message(t('Submission deleted.'));

  // If no destination query was supplied in the URL (for example, Edit tab),

  // redirect to the most-privledged destination.

  $form_state['redirect'] = 'node/' . $node->nid .

                            (webform_results_access($node) ? '/webform-results' : '/submissions');

}

/**

 * Menu title callback; Return the submission number as a title.

 */

function webform_submission_title($node, $submission) {

  return t('Submission #@serial', array('@serial' => $submission->serial));

}

/**

 * Menu callback; Present a Webform submission page for display or editing.

 */

function webform_submission_page($node, $submission, $format) {

  global $user;

  // Render the admin UI breadcrumb.

  webform_set_breadcrumb($node, $submission);

  // Set the correct page title.

  drupal_set_title(webform_submission_title($node, $submission));

  if ($format == 'form') {

    $output = drupal_get_form('webform_client_form_' . $node->nid, $node, $submission);

  }

  else {

    $renderable = webform_submission_render($node, $submission, NULL, $format);

    $renderable['#attached']['css'][] = drupal_get_path('module', 'webform') . '/css/webform.css';

    $output = drupal_render($renderable);

  }

  // Determine the mode in which we're displaying this submission.

  $mode = ($format != 'form') ? 'display' : 'form';

  if (strpos(request_uri(), 'print/') !== FALSE) {

    $mode = 'print';

  }

  if (strpos(request_uri(), 'printpdf/') !== FALSE) {

    $mode = 'pdf';

  }

  // Add navigation for administrators.

  if (webform_results_access($node)) {

    $navigation = theme('webform_submission_navigation', array('node' => $node, 'submission' => $submission, 'mode' => $mode));

    $information = theme('webform_submission_information', array('node' => $node, 'submission' => $submission, 'mode' => $mode));

  }

  else {

    $navigation = NULL;

    $information = NULL;

  }

  // Actions may be shown to all users.

  $actions = theme('links', array('links' => module_invoke_all('webform_submission_actions', $node, $submission), 'attributes' => array('class' => array('links', 'inline', 'webform-submission-actions'))));

  // Disable the page cache for anonymous users viewing or editing submissions.

  if (!$user->uid) {

    webform_disable_page_cache();

  }

  $page = array(

    '#theme' => 'webform_submission_page',

    '#node' => $node,

    '#mode' => $mode,

    '#submission' => $submission,

    '#submission_content' => $output,

    '#submission_navigation' => $navigation,

    '#submission_information' => $information,

    '#submission_actions' => $actions,

  );

  $page['#attached']['library'][] = array('webform', 'admin');

  return $page;

}

/**

 * Form to resend specific e-mails associated with a submission.

 */

function webform_submission_resend($form, $form_state, $node, $submission) {

  // Render the admin UI breadcrumb.

  webform_set_breadcrumb($node, $submission);

  $form['#tree'] = TRUE;

  $form['#node'] = $node;

  $form['#submission'] = $submission;

  foreach ($node->webform['emails'] as $eid => $email) {

    $mapping = isset($email['extra']['email_mapping']) ? $email['extra']['email_mapping'] : NULL;

    $addresses = webform_format_email_address($email['email'], NULL, $node, $submission, FALSE, FALSE, NULL, $mapping);

    $addresses_valid = array_map('webform_valid_email_address', $addresses);

    $valid_email = count($addresses) == array_sum($addresses_valid);

    $form['resend'][$eid] = array(

      '#type' => 'checkbox',

      '#default_value' => $valid_email && $email['status'],

      '#disabled' => !$valid_email,

    );

    $form['emails'][$eid]['email'] = array(

      '#markup' => nl2br(check_plain(implode("\n", $addresses))),

    );

    if (!$valid_email) {

      $form['emails'][$eid]['email']['#markup'] .= ' (' . t('empty or invalid') . ')';

    }

    $form['emails'][$eid]['subject'] = array(

      '#markup' => check_plain(webform_format_email_subject($email['subject'], $node, $submission)),

    );

    $form['actions'] = array('#type' => 'actions');

    $form['actions']['submit'] = array(

      '#type' => 'submit',

      '#value' => t('Resend e-mails'),

    );

    $form['actions']['cancel'] = array(

      '#type' => 'markup',

      '#markup' => l(t('Cancel'), isset($_GET['destination']) ? $_GET['destination'] : 'node/' . $node->nid . '/submission/' . $submission->sid),

    );

  }

  return $form;

}

/**

 * Validate handler for webform_submission_resend().

 */

function webform_submission_resend_validate($form, &$form_state) {

  if (count(array_filter($form_state['values']['resend'])) == 0) {

    form_set_error('emails', t('You must select at least one email address to resend submission.'));

  }

}

/**

 * Submit handler for webform_submission_resend().

 */

function webform_submission_resend_submit($form, &$form_state) {

  $node = $form['#node'];

  $submission = $form['#submission'];

  $emails = array();

  foreach ($form_state['values']['resend'] as $eid => $checked) {

    if ($checked) {

      $emails[] = $form['#node']->webform['emails'][$eid];

    }

  }

  $sent_count = webform_submission_send_mail($node, $submission, $emails);

  if ($sent_count) {

    drupal_set_message(format_plural($sent_count,

      'Successfully re-sent submission #@sid to 1 recipient.',

      'Successfully re-sent submission #@sid to @count recipients.',

      array('@sid' => $submission->sid)

    ));

  }

  else {

    drupal_set_message(t('No e-mails were able to be sent due to a server error.'), 'error');

  }

}

/**

 * Theme the node components form. Use a table to organize the components.

 *

 * @param array $variables

 *   Array with key "form" containing the form array.

 *

 * @return string

 *   Formatted HTML form, ready for display.

 *

 * @throws Exception

 */

function theme_webform_submission_resend(array $variables) {

  $form = $variables['form'];

  $header = array(t('Send'), t('E-mail to'), t('Subject'));

  $rows = array();

  if (!empty($form['emails'])) {

    foreach (element_children($form['emails']) as $eid) {

      // Add each component to a table row.

      $rows[] = array(

        drupal_render($form['resend'][$eid]),

        drupal_render($form['emails'][$eid]['email']),

        drupal_render($form['emails'][$eid]['subject']),

      );

    }

  }

  else {

    $rows[] = array(array('data' => t('This webform is currently not setup to send emails.'), 'colspan' => 3));

  }

  $output = '';

  $output .= theme('table', array('header' => $header, 'rows' => $rows, 'sticky' => FALSE, 'attributes' => array('id' => 'webform-emails')));

  $output .= drupal_render_children($form);

  return $output;

}

/**

 * Print a Webform submission for display on a page or in an e-mail.

 */

function webform_submission_render($node, $submission, $email, $format, $excluded_components = NULL) {

  $component_tree = array();

  $renderable = array();

  $page_count = 1;

  // Meta data that may be useful for modules implementing

  // hook_webform_submission_render_alter().

  $renderable['#node'] = $node;

  $renderable['#submission'] = $submission;

  $renderable['#email'] = $email;

  $renderable['#format'] = $format;

  // Set the theme function for submissions.

  $renderable['#theme'] = array('webform_submission_' . $node->nid, 'webform_submission');

  $components = $node->webform['components'];

  // Remove excluded components.

  if (is_array($excluded_components)) {

    foreach ($excluded_components as $cid) {

      unset($components[$cid]);

    }

    if (!empty($email['exclude_empty'])) {

      foreach ($submission->data as $cid => $data) {

        // Caution. Grids store their data in an array index by question key.

        if (implode($data) == '') {

          unset($components[$cid]);

        }

      }

    }

  }

  module_load_include('inc', 'webform', 'includes/webform.components');

  _webform_components_tree_build($components, $component_tree, 0, $page_count);

  // Make sure at least one field is available.

  if (isset($component_tree['children'])) {

    // Recursively add components to the form.

    $sorter = webform_get_conditional_sorter($node);

    $input_values = $sorter->executeConditionals($submission->data);

    foreach ($component_tree['children'] as $cid => $component) {

      if ($sorter->componentVisibility($cid, $component['page_num']) == webformConditionals::componentShown) {

        _webform_client_form_add_component($node, $component, NULL, $renderable, $renderable, $input_values, $format);

      }

    }

  }

  drupal_alter('webform_submission_render', $renderable);

  return $renderable;

}

/**

 * Return all the submissions for a particular node.

 *

 * @param $filters

 *   An array of filters to apply to this query. Usually in the format

 *   array('nid' => $nid, 'uid' => $uid). A single integer may also be passed

 *   in, which will be equivalent to specifying a $nid filter.

 * @param $header

 *   If the results of this fetch will be used in a sortable

 *   table, pass the array header of the table.

 * @param $pager_count

 *   Optional. The number of submissions to include in the results.

 *

 * @return array

 *   Array of submission data for a particular node.

 */

function webform_get_submissions($filters = array(), $header = NULL, $pager_count = 0) {

  return webform_get_submissions_load(webform_get_submissions_query($filters, $header, $pager_count));

}

/**

 * Returns an unexecuted webform_submissions query on for the arguments.

 *

 * This is an internal routine and not intended for use by other modules.

 *

 * @param $filters

 *   An array of filters to apply to this query. Usually in the format

 *   array('nid' => $nid, 'uid' => $uid). A single integer may also be passed

 *   in, which will be equivalent to specifying a $nid filter. 'sid' may also

 *   be included, either as a single sid or an array of sid's.

 * @param $header

 *   If the results of this fetch will be used in a sortable

 *   table, pass the array header of the table.

 * @param $pager_count

 *   Optional. The number of submissions to include in the results.

 *

 * @return QueryExtendableInterface|SelectQueryInterface

 *   The query object.

 */

function webform_get_submissions_query($filters = array(), $header = NULL, $pager_count = 0) {

  if (!is_array($filters)) {

    $filters = array('ws.nid' => $filters);

  }

  // Qualify all filters with a table alias. ws.* is assumed, except for u.uid.

  foreach ($filters as $column => $value) {

    if (strpos($column, '.') === FALSE) {

      $filters[($column == 'uid' ? 'u.' : 'ws.') . $column] = $value;

      unset($filters[$column]);

    }

  }

  // If the sid is specified, but there are none, force the query to fail

  // rather than query on an empty array.

  if (isset($filters['ws.sid']) && empty($filters['ws.sid'])) {

    $filters['ws.sid'] = 0;

  }

  // Build the list of submissions and load their basic information.

  $pager_query = db_select('webform_submissions', 'ws')

    // Ensure only one row per submission is returned. Could be more than one if

    // sorting on a column that uses multiple rows for its data.

    ->distinct()

    ->addTag('webform_get_submissions_sids')

    ->fields('ws');

  // Add each filter.

  foreach ($filters as $column => $value) {

    $pager_query->condition($column, $value);

  }

  // Join to the users table to include user name in results.

  $pager_query->leftJoin('users', 'u', 'u.uid = ws.uid');

  $pager_query->fields('u', array('name'));

  if (isset($filters['u.uid']) && $filters['u.uid'] === 0) {

    if (!empty($_SESSION['webform_submission'])) {

      $anonymous_sids = array_keys($_SESSION['webform_submission']);

      $pager_query->condition('ws.sid', $anonymous_sids, 'IN');

    }

    else {

      $pager_query->condition('ws.sid', 0);

    }

  }

  if (is_array($header)) {

    $metadata_columns = array();

    foreach ($header as $header_item) {

      $metadata_columns[] = $header_item['data'];

    }

    $sort = drupal_get_query_parameters();

    // Sort by submitted data column if order is set but not in

    // $metadata_columns.

    if (isset($sort['order']) && !in_array($sort['order'], $metadata_columns, TRUE)) {

      // Default if sort is unset or invalid.

      if (!isset($sort['sort']) || !in_array($sort['sort'], array('asc', 'desc'), TRUE)) {

        $sort['sort'] = '';

      }

      $pager_query->leftJoin('webform_component', 'wc', 'ws.nid = wc.nid AND wc.name = :form_key', array('form_key' => $sort['order']));

      $pager_query->leftJoin('webform_submitted_data', 'wsd', 'wc.nid = wsd.nid AND ws.sid = wsd.sid AND wc.cid = wsd.cid');

      $pager_query->orderBy('wsd.data', $sort['sort']);

      $pager_query->orderBy('ws.sid', 'ASC');

    }

    // Sort by metadata column.

    else {

      // Extending the query instantiates a new query object.

      $pager_query = $pager_query->extend('TableSort');

      $pager_query->orderByHeader($header);

    }

  }

  else {

    $pager_query->orderBy('ws.sid', 'ASC');

  }

  if ($pager_count) {

    // Extending the query instantiates a new query object.

    $pager_query = $pager_query->extend('PagerDefault');

    $pager_query->limit($pager_count);

  }

  return $pager_query;

}

/**

 * Retrieve and load the submissions for the specified submissions query.

 *

 * This is an internal routine and not intended for use by other modules.

 *

 * @params object $pager_query

 *   A select or extended select query containing the needed fields:

 *     webform_submissions: all fields

 *     user: name

 *

 * @return array

 *   An array of loaded webform submissions.

 */

function webform_get_submissions_load($pager_query) {

  // If the "$pager_query" is actually an unextended select query, then instead

  // of querying the webform_submissions_data table with a potentially huge

  // array of sids in an IN clause, use the select query directly as this will

  // be much faster. Extended queries don't work in join clauses. The query

  // is assumed to include the sid.

  if ($pager_query instanceof SelectQuery) {

    $submissions_query = clone $pager_query;

  }

  // Extract any filter on node id to use in an optimization below.

  foreach ($pager_query->conditions() as $index => $condition) {

    if ($index !== '#conjunction' && $condition['operator'] === '=' && ($condition['field'] === 'nid' || $condition['field'] === 'ws.nid')) {

      $nid = $condition['value'];

      break;

    }

  }

  $result = $pager_query->execute();

  $submissions = $result->fetchAllAssoc('sid');

  // If there are no submissions being retrieved, return an empty array.

  if (!$submissions) {

    return $submissions;

  }

  foreach ($submissions as $sid => $submission) {

    $submissions[$sid]->preview = FALSE;

    $submissions[$sid]->data = array();

  }

  // Query the required submission data.

  $query = db_select('webform_submitted_data', 'sd');

  $query

    ->addTag('webform_get_submissions_data')

    ->fields('sd', array('sid', 'cid', 'no', 'data'))

    ->orderBy('sd.sid', 'ASC')

    ->orderBy('sd.cid', 'ASC')

    ->orderBy('sd.no', 'ASC');

  if (isset($submissions_query)) {

    // If available, prefer joining on the subquery as it is much faster than an

    // IN clause on a large array. A subquery with the IN operator doesn't work

    // when the subquery has a LIMIT clause, requiring an inner join instead.

    $query->innerJoin($submissions_query, 'ws2', 'sd.sid = ws2.sid');

  }

  else {

    $query->condition('sd.sid', array_keys($submissions), 'IN');

  }

  // By adding the NID to this query we allow MySQL to use the primary key on

  // in webform_submitted_data for sorting (nid_sid_cid_no).

  if (isset($nid)) {

    $query->condition('sd.nid', $nid);

  }

  $result = $query->execute();

  // Convert the queried rows into submission data.

  foreach ($result as $row) {

    $submissions[$row->sid]->data[$row->cid][$row->no] = $row->data;

  }

  foreach (module_implements('webform_submission_load') as $module) {

    $function = $module . '_webform_submission_load';

    $function($submissions);

  }

  return $submissions;

}

/**

 * Return a count of the total number of submissions for a node.

 *

 * @param $nid

 *   The node ID for which submissions are being fetched.

 * @param $uid

 *   Optional; the user ID to filter the submissions by.

 * @param $is_draft

 *   Optional; NULL for all, truthy for drafts only, falsy for completed only.

 *   The default is completed submissions only.

 *

 * @return int

 *   The number of submissions.

 */

function webform_get_submission_count($nid, $uid = NULL, $is_draft = 0) {

  $counts = &drupal_static(__FUNCTION__);

  if (!isset($counts[$nid][$uid])) {

    $query = db_select('webform_submissions', 'ws')

      ->addTag('webform_get_submission_count')

      ->condition('ws.nid', $nid);

    if ($uid !== NULL) {

      $query->condition('ws.uid', $uid);

    }

    if ($uid === 0) {

      $submissions = isset($_SESSION['webform_submission']) ? $_SESSION['webform_submission'] : NULL;

      if ($submissions) {

        $query->condition('ws.sid', $submissions, 'IN');

      }

      else {

        // Intentionally never match anything if the anonymous user has no

        // submissions.

        $query->condition('ws.sid', 0);

      }

    }

    if (isset($is_draft)) {

      $query->condition('ws.is_draft', $is_draft);

    }

    $counts[$nid][$uid] = $query->countQuery()->execute()->fetchField();

  }

  return $counts[$nid][$uid];

}

/**

 * Fetch a specified submission for a webform node.

 */

function webform_get_submission($nid, $sid) {

  $submissions = &drupal_static(__FUNCTION__, array());

  // Load the submission if needed.

  if (!isset($submissions[$sid])) {

    $new_submissions = webform_get_submissions(array('nid' => $nid, 'sid' => $sid));

    $submissions[$sid] = isset($new_submissions[$sid]) ? $new_submissions[$sid] : FALSE;

  }

  return $submissions[$sid];

}

/**

 *

 */

function _webform_submission_spam_check($to, $subject, $from, $headers = array()) {

  $headers = implode('\n', (array) $headers);

  // Check if they are attempting to spam using a bcc or content type hack.

  if (preg_match('/(b?cc\s?:)|(content\-type:)/i', $to . "\n" . $subject . "\n" . $from . "\n" . $headers)) {

    // Possible spam attempt.

    return TRUE;

  }

  // Not spam.

  return FALSE;

}

/**

 * Check if the current user has exceeded the limit on this form.

 *

 * @param $node

 *   The webform node to be checked.

 * @param $account

 *   Optional parameter. Specify the account you want to check the limit

 *   against.

 *

 * @return bool

 *   Boolean TRUE if the user has exceeded their limit. FALSE otherwise.

 */

function webform_submission_user_limit_check($node, $account = NULL) {

  global $user;

  $tracking_mode = webform_variable_get('webform_tracking_mode');

  if (!isset($account)) {

    $account = $user;

  }

  // We can only check access for anonymous users through their cookies.

  if ($user->uid !== 0 && $account->uid === 0) {

    watchdog('webform', 'Unable to check anonymous user submission limit when logged in as user @uid.', array('@uid' => $user->uid), WATCHDOG_WARNING);

    return FALSE;

  }

  // Check if submission limiting is enabled.

  if ($node->webform['submit_limit'] == '-1') {

    // No check enabled.

    return FALSE;

  }

  // Fetch all the entries from the database within the submit interval with

  // this username and IP.

  $num_submissions_database = 0;

  if (!$node->webform['confidential'] &&

      ($account->uid !== 0 || $tracking_mode === 'ip_address' || $tracking_mode === 'strict')) {

    $query = db_select('webform_submissions')

      ->addTag('webform_submission_user_limit_check')

      ->condition('nid', $node->nid)

      ->condition('is_draft', 0);

    if ($node->webform['submit_interval'] != -1) {

      $query->condition('submitted', REQUEST_TIME - $node->webform['submit_interval'], '>');

    }

    if ($account->uid) {

      $query->condition('uid', $account->uid);

    }

    else {

      $query->condition('remote_addr', ip_address());

    }

    $num_submissions_database = $query->countQuery()->execute()->fetchField();

  }

  // Double check the submission history from the users machine using cookies.

  $num_submissions_cookie = 0;

  if ($account->uid === 0 && ($tracking_mode === 'cookie' || $tracking_mode === 'strict')) {

    $cookie_name = 'webform-' . $node->nid;

    if (isset($_COOKIE[$cookie_name]) && is_array($_COOKIE[$cookie_name])) {

      foreach ($_COOKIE[$cookie_name] as $key => $timestamp) {

        if ($node->webform['submit_interval'] != -1 && $timestamp <= REQUEST_TIME - $node->webform['submit_interval']) {

          // Remove the cookie if past the required time interval.

          $params = session_get_cookie_params();

          setcookie($cookie_name . '[' . $key . ']', '', 0, $params['path'], $params['domain'], $params['secure'], $params['httponly']);

        }

      }

      // Count the number of submissions recorded in cookies.

      $num_submissions_cookie = count($_COOKIE[$cookie_name]);

    }

  }

  if ($num_submissions_database >= $node->webform['submit_limit'] || $num_submissions_cookie >= $node->webform['submit_limit']) {

    // Limit exceeded.

    return TRUE;

  }

  // Limit not exceeded.

  return FALSE;

}

/**

 * Check if the total number of submissions has exceeded the limit on this form.

 *

 * @param $node

 *   The webform node to be checked.

 *

 * @return bool

 *   Boolean TRUE if the form has exceeded it's limit. FALSE otherwise.

 */

function webform_submission_total_limit_check($node) {

  // Check if submission limiting is enabled.

  if ($node->webform['total_submit_limit'] == '-1') {

    // No check enabled.

    return FALSE;

  }

  // Retrieve submission data from the database.

  $query = db_select('webform_submissions')

    ->addTag('webform_submission_total_limit_check')

    ->condition('nid', $node->nid)

    ->condition('is_draft', 0);

  if ($node->webform['total_submit_interval'] != -1) {

    $query->condition('submitted', REQUEST_TIME - $node->webform['total_submit_interval'], '>');

  }

  // Fetch all the entries from the database within the submit interval.

  $num_submissions_database = $query->countQuery()->execute()->fetchField();

  if ($num_submissions_database >= $node->webform['total_submit_limit']) {

    // Limit exceeded.

    return TRUE;

  }

  // Limit not exceeded.

  return FALSE;

}

/**

 * Preprocess function for webform-submission.tpl.php.

 */

function template_preprocess_webform_submission(&$vars) {

  $vars['node'] = $vars['renderable']['#node'];

  $vars['submission'] = $vars['renderable']['#submission'];

  $vars['email'] = $vars['renderable']['#email'];

  $vars['format'] = $vars['renderable']['#format'];

}

/**

 * Preprocess function for webform-submission-navigation.tpl.php.

 */

function template_preprocess_webform_submission_navigation(&$vars) {

  $start_path = ($vars['mode'] == 'print') ? 'print/' : 'node/';

  $previous_query = db_select('webform_submissions')

    ->condition('nid', $vars['node']->nid)

    ->condition('sid', $vars['submission']->sid, '<');

  $previous_query->addExpression('MAX(sid)');

  $next_query = db_select('webform_submissions')

    ->condition('nid', $vars['node']->nid)

    ->condition('sid', $vars['submission']->sid, '>');

  $next_query->addExpression('MIN(sid)');

  $vars['previous'] = $previous_query->execute()->fetchField();

  $vars['next'] = $next_query->execute()->fetchField();

  $vars['previous_url'] = $start_path . $vars['node']->nid . '/submission/' . $vars['previous'] . ($vars['mode'] == 'form' ? '/edit' : '');

  $vars['next_url'] = $start_path . $vars['node']->nid . '/submission/' . $vars['next'] . ($vars['mode'] == 'form' ? '/edit' : '');

}

/**

 * Preprocess function for webform-submission-navigation.tpl.php.

 */

function template_preprocess_webform_submission_information(&$vars) {

  $vars['account'] = user_load($vars['submission']->uid);

  $vars['actions'] = theme('links', module_invoke_all('webform_submission_actions', $vars['node'], $vars['submission']));

}