Club Drupal

<?php

/**

 * @file

 * Webform module file component.

 */

/**

 * Implements _webform_defaults_component().

 */

function _webform_defaults_file() {

  return array(

    'name' => '',

    'form_key' => NULL,

    'mandatory' => 0,

    'pid' => 0,

    'weight' => 0,

    'extra' => array(

      'filtering' => array(

        'types' => array('gif', 'jpg', 'png'),

        'addextensions' => '',

        'size' => '2 MB',

      ),

      'scheme' => 'public',

      'directory' => '',

      'progress_indicator' => 'throbber',

      'title_display' => 0,

      'description' => '',

      'attributes' => array(),

      'private' => FALSE,

    ),

  );

}

/**

 * Implements _webform_theme_component().

 */

function _webform_theme_file() {

  return array(

    'webform_edit_file_extensions' => array(

      'render element' => 'element',

      'file' => 'components/file.inc',

    ),

    'webform_display_file' => array(

      'render element' => 'element',

      'file' => 'components/file.inc',

    ),

  );

}

/**

 * Implements _webform_edit_component().

 */

function _webform_edit_file($component) {

    $form = array();

    $form['#element_validate'] = array('_webform_edit_file_check_directory');

    $form['#after_build'] = array('_webform_edit_file_check_directory');

    $form['validation']['size'] = array(

      '#type' => 'textfield',

      '#title' => t('Max upload size'),

      '#default_value' => $component['extra']['filtering']['size'],

      '#description' => t('Enter the max file size a user may upload such as 2 MB or 800 KB. Your server has a max upload size of @size.', array('@size' => format_size(file_upload_max_size()))),

      '#size' => 10,

      '#parents' => array('extra', 'filtering', 'size'),

      '#element_validate' => array('_webform_edit_file_size_validate'),

      '#weight' => 1,

    );

    $form['validation']['extensions'] = array(

      '#element_validate' => array('_webform_edit_file_extensions_validate'),

      '#parents' => array('extra', 'filtering'),

      '#theme' => 'webform_edit_file_extensions',

      '#theme_wrappers' => array('form_element'),

      '#title' => t('Allowed file extensions'),

      '#attached' => array(

        'js' => array(drupal_get_path('module', 'webform') . '/js/webform-admin.js'),

        'css' => array(drupal_get_path('module', 'webform') . '/css/webform-admin.css'),

      ),

      '#weight' => 2,

    );

    // Find the list of all currently valid extensions.

    $current_types = isset($component['extra']['filtering']['types']) ? $component['extra']['filtering']['types'] : array();

    $types = array('gif', 'jpg', 'png');

    $form['validation']['extensions']['types']['webimages'] = array(

      '#type' => 'checkboxes',

      '#title' => t('Web images'),

      '#options' => drupal_map_assoc($types),

      '#default_value' => array_intersect($current_types, $types),

    );

    $types = array('bmp', 'eps', 'tif', 'pict', 'psd');

    $form['validation']['extensions']['types']['desktopimages'] = array(

      '#type' => 'checkboxes',

      '#title' => t('Desktop images'),

      '#options' => drupal_map_assoc($types),

      '#default_value' => array_intersect($current_types, $types),

    );

    $types = array('txt', 'rtf', 'html', 'odf', 'pdf', 'doc', 'docx', 'ppt', 'pptx', 'xls', 'xlsx', 'xml');

    $form['validation']['extensions']['types']['documents'] = array(

      '#type' => 'checkboxes',

      '#title' => t('Documents'),

      '#options' => drupal_map_assoc($types),

      '#default_value' => array_intersect($current_types, $types),

    );

    $types = array('avi', 'mov', 'mp3', 'ogg', 'wav');

    $form['validation']['extensions']['types']['media'] = array(

      '#type' => 'checkboxes',

      '#title' => t('Media'),

      '#options' => drupal_map_assoc($types),

      '#default_value' => array_intersect($current_types, $types),

    );

    $types = array('bz2', 'dmg', 'gz', 'jar', 'rar', 'sit', 'tar', 'zip');

    $form['validation']['extensions']['types']['archives'] = array(

      '#type' => 'checkboxes',

      '#title' => t('Archives'),

      '#options' => drupal_map_assoc($types),

      '#default_value' => array_intersect($current_types, $types),

    );

    $form['validation']['extensions']['addextensions'] = array(

      '#type' => 'textfield',

      '#title' => t('Additional extensions'),

      '#default_value' => $component['extra']['filtering']['addextensions'],

      '#description' => t('Enter a list of additional file extensions for this upload field, separated by commas.<br /> Entered extensions will be appended to checked items above.'),

      '#size' => 20,

      '#weight' => 3,

    );

    $scheme_options = array();

    foreach (file_get_stream_wrappers(STREAM_WRAPPERS_WRITE_VISIBLE) as $scheme => $stream_wrapper) {

      $scheme_options[$scheme] = $stream_wrapper['name'];

    }

    $form['extra']['scheme'] = array(

      '#type' => 'radios',

      '#title' => t('Upload destination'),

      '#options' => $scheme_options,

      '#default_value' => $component['extra']['scheme'],

      '#description' => t('Private file storage has significantly more overhead than public files, but restricts file access to users who can view submissions.'),

      '#weight' => 4,

      '#access' => count($scheme_options) > 1,

    );

    $form['extra']['directory'] = array(

      '#type' => 'textfield',

      '#title' => t('Upload directory'),

      '#default_value' => $component['extra']['directory'],

      '#description' => t('You may optionally specify a sub-directory to store your files.'),

      '#weight' => 5,

      '#field_prefix' => 'webform/',

    );

    $form['display']['progress_indicator'] = array(

      '#type' => 'radios',

      '#title' => t('Progress indicator'),

      '#options' => array(

        'throbber' => t('Throbber'),

        'bar' => t('Bar with progress meter'),

      ),

      '#default_value' => $component['extra']['progress_indicator'],

      '#description' => t('The throbber display does not show the status of uploads but takes up less space. The progress bar is helpful for monitoring progress on large uploads.'),

      '#weight' => 16,

      '#access' => file_progress_implementation(),

      '#parents' => array('extra', 'progress_indicator'),

    );

    // TODO: Make managed_file respect the "size" parameter.

    /*

    $form['display']['width'] = array(

      '#type' => 'textfield',

      '#title' => t('Width'),

      '#default_value' => $component['extra']['width'],

      '#description' => t('Width of the file field.') . ' ' . t('Leaving blank will use the default size.'),

      '#size' => 5,

      '#maxlength' => 10,

      '#weight' => 4,

      '#parents' => array('extra', 'width')

    );

    */

    return $form;

}

/**

 * A Form API element validate function to check filesize is valid.

 */

function _webform_edit_file_size_validate($element) {

  if (!empty($element['#value'])) {

    $set_filesize = parse_size($element['#value']);

    if ($set_filesize == FALSE) {

      form_error($element, t('File size @value is not a valid filesize. Use a value such as 2 MB or 800 KB.', array('@value' => $element['#value'])));

    }

    else {

      $max_filesize = parse_size(file_upload_max_size());

      if ($max_filesize < $set_filesize) {

        form_error($element, t('An upload size of @value is too large, you are allow to upload files @max or less.', array('@value' => $element['#value'], '@max' => format_size($max_filesize))));

      }

    }

  }

}

/**

 * A Form API after build and validate function.

 *

 * Ensure that the destination directory exists and is writable.

 */

function _webform_edit_file_check_directory($element) {

  $scheme = $element['extra']['scheme']['#value'];

  $directory = $element['extra']['directory']['#value'];

  $destination_dir = file_stream_wrapper_uri_normalize($scheme . '://webform/' . $directory);

  // Sanity check input to prevent use parent (../) directories.

  if (preg_match('/\.\.[\/\\\]/', $destination_dir . '/')) {

    form_error($element['extra']['directory'], t('The save directory %directory is not valid.', array('%directory' => $directory)));

  }

  else {

    $destination_success = file_prepare_directory($destination_dir, FILE_CREATE_DIRECTORY);

    if (!$destination_success) {

      form_error($element['extra']['directory'], t('The save directory %directory could not be created. Check that the webform files directory is writable.', array('%directory' => $directory)));

    }

  }

  return $element;

}

/**

 * A Form API element validate function.

 *

 * Change the submitted values of the component so that all filtering extensions

 * are saved as a single array.

 */

function _webform_edit_file_extensions_validate($element, &$form_state) {

  // Predefined types.

  $extensions = array();

  foreach (element_children($element['types']) as $category) {

    foreach (array_keys($element['types'][$category]['#value']) as $extension) {

      if ($element['types'][$category][$extension]['#value']) {

        $extensions[] = $extension;

      }

    }

  }

  // Additional types.

  $additional_extensions = explode(',', $element['addextensions']['#value']);

  foreach ($additional_extensions as $extension) {

    $clean_extension = drupal_strtolower(trim($extension));

    if (!empty($clean_extension) && !in_array($clean_extension, $extensions)) {

      $extensions[] = $clean_extension;

    }

  }

  form_set_value($element['types'], $extensions, $form_state);

}

/**

 * Output the list of allowed extensions as checkboxes.

 */

function theme_webform_edit_file_extensions($variables) {

  $element = $variables['element'];

  // Format the components into a table.

  $rows = array();

  foreach (element_children($element['types']) as $filtergroup) {

    $row = array();

    $first_row = count($rows);

    if ($element['types'][$filtergroup]['#type'] == 'checkboxes') {

      $select_link = ' <a href="#" class="webform-select-link webform-select-link-' . $filtergroup . '">(' . t('select') . ')</a>';

      $row[] = $element['types'][$filtergroup]['#title'];

      $row[] = array('data' => $select_link, 'width' => 40);

      $row[] = array('data' => drupal_render_children($element['types'][$filtergroup]), 'class' => array('webform-file-extensions', 'webform-select-group-' . $filtergroup));

      $rows[] = array('data' => $row);

      unset($element['types'][$filtergroup]);

    }

  }

  // Add the row for additional types.

  $row = array();

  $title = $element['addextensions']['#title'];

  $element['addextensions']['#title'] = NULL;

  $row[] = array('data' => $title, 'colspan' => 2);

  $row[] = drupal_render($element['addextensions']);

  $rows[] = $row;

  $header = array(array('data' => t('Category'), 'colspan' => '2'), array('data' => t('Types')));

  // Create the table inside the form.

  $element['types']['table'] = array(

    '#theme' => 'table',

    '#header' => $header,

    '#rows' => $rows,

    '#attributes' => array('class' => array('webform-file-extensions')),

  );

  return drupal_render_children($element);

}

/**

 * Implements _webform_render_component().

 */

function _webform_render_file($component, $value = NULL, $filter = TRUE) {

  $node = isset($component['nid']) ? node_load($component['nid']) : NULL;

  // Cap the upload size according to the PHP limit.

  $max_filesize = parse_size(file_upload_max_size());

  $set_filesize = $component['extra']['filtering']['size'];

  if (!empty($set_filesize) && parse_size($set_filesize) < $max_filesize) {

    $max_filesize = parse_size($set_filesize);

  }

  $element = array(

    '#type' => 'managed_file',

    '#title' => $filter ? _webform_filter_xss($component['name']) : $component['name'],

    '#title_display' => $component['extra']['title_display'] ? $component['extra']['title_display'] : 'before',

    '#required' => $component['mandatory'],

    '#default_value' => isset($value[0]) ? $value[0] : NULL,

    '#attributes' => $component['extra']['attributes'],

    '#upload_validators' => array(

      'file_validate_size' => array($max_filesize),

      'file_validate_extensions' => array(implode(' ', $component['extra']['filtering']['types'])),

    ),

    '#pre_render' => array_merge(element_info_property('managed_file', '#pre_render'), array('webform_file_allow_access')),

    '#upload_location' => $component['extra']['scheme'] . '://webform/' . $component['extra']['directory'],

    '#progress_indicator' => $component['extra']['progress_indicator'],

    '#description' => $filter ? _webform_filter_descriptions($component['extra']['description'], $node) : $component['extra']['description'],

    '#weight' => $component['weight'],

    '#theme_wrappers' => array('webform_element'),

    '#translatable' => array('title', 'description'),

  );

  return $element;

}

/**

 * Implements _webform_submit_component().

 */

function _webform_submit_file($component, $value) {

  if (is_array($value)) {

    return !empty($value['fid']) ? $value['fid'] : '';

  }

  else {

    return !empty($value) ? $value : '';

  }

}

/**

 * Pre-render callback to allow access to uploaded files.

 *

 * Files that have not yet been saved into a submission must be accessible to

 * the user who uploaded it, but no one else. After the submission is saved,

 * access is granted through the file_usage table. Before then, we use a

 * $_SESSION value to record a user's upload.

 *

 * @see webform_file_download()

 */

function webform_file_allow_access($element) {

  if (!empty($element['#value']['fid'])) {

    $fid = $element['#value']['fid'];

    $_SESSION['webform_files'][$fid] = $fid;

  }

  return $element;

}

/**

 * Implements _webform_display_component().

 */

function _webform_display_file($component, $value, $format = 'html') {

  $fid = isset($value[0]) ? $value[0] : NULL;

  return array(

    '#title' => $component['name'],

    '#value' => $fid ? webform_get_file($fid) : NULL,

    '#weight' => $component['weight'],

    '#theme' => 'webform_display_file',

    '#theme_wrappers' => $format == 'text' ? array('webform_element_text') : array('webform_element'),

    '#format' => $format,

    '#translatable' => array('title'),

  );

}

/**

 * Format the output of text data for this component

 */

function theme_webform_display_file($variables) {

  $element = $variables['element'];

  $file = $element['#value'];

  $url = !empty($file) ? webform_file_url($file->uri) : t('no upload');

  return !empty($file) ? ($element['#format'] == 'text' ? $url : l($file->filename, $url)) : ' ';

}

/**

 * Implements _webform_delete_component().

 */

function _webform_delete_file($component, $value) {

  // Delete an individual submission file.

  if (!empty($value[0]) && ($file = webform_get_file($value[0]))) {

    file_usage_delete($file, 'webform');

    file_delete($file);

  }

}

/**

 * Implements _webform_attachments_component().

 */

function _webform_attachments_file($component, $value) {

  $file = (array) webform_get_file($value[0]);

  //This is necessary until the next release of mimemail is out, see [#1388786]

  $file['filepath'] = $file['uri'];

  $files = array($file);

  return $files;

}

/**

 * Implements _webform_analysis_component().

 */

function _webform_analysis_file($component, $sids = array()) {

  $query = db_select('webform_submitted_data', 'wsd', array('fetch' => PDO::FETCH_ASSOC))

    ->fields('wsd', array('no', 'data'))

    ->condition('nid', $component['nid'])

    ->condition('cid', $component['cid']);

  if (count($sids)) {

    $query->condition('sid', $sids, 'IN');

  }

  $nonblanks = 0;

  $sizetotal = 0;

  $submissions = 0;

  $result = $query->execute();

  foreach ($result as $data) {

    $file = webform_get_file($data['data']);

    if (isset($file->filesize)) {

      $nonblanks++;

      $sizetotal += $file->filesize;

    }

    $submissions++;

  }

  $rows[0] = array(t('Left Blank'), ($submissions - $nonblanks));

  $rows[1] = array(t('User uploaded file'), $nonblanks);

  $rows[2] = array(t('Average uploaded file size'), ($sizetotal != 0 ? (int) (($sizetotal/$nonblanks)/1024) . ' KB' : '0'));

  return $rows;

}

/**

 * Implements _webform_table_component().

 */

function _webform_table_file($component, $value) {

  $output = '';

  $file = webform_get_file($value[0]);

  if (!empty($file->fid)) {

    $output = '<a href="' . webform_file_url($file->uri) . '">' . check_plain(webform_file_name($file->uri)) . '</a>';

    $output .= ' (' . (int) ($file->filesize/1024) . ' KB)';

  }

  return $output;

}

/**

 * Implements _webform_csv_headers_component().

 */

function _webform_csv_headers_file($component, $export_options) {

  $header = array();

  // Two columns in header.

  $header[0] = array('', '');

  $header[1] = array($component['name'], '');

  $header[2] = array(t('Name'), t('Filesize (KB)'));

  return $header;

}

/**

 * Implements _webform_csv_data_component().

 */

function _webform_csv_data_file($component, $export_options, $value) {

  $file = webform_get_file($value[0]);

  return empty($file->filename) ? array('', '') : array(webform_file_url($file->uri), (int) ($file->filesize/1024));

}

/**

 * Helper function to create proper file names for uploaded file.

 */

function webform_file_name($filepath) {

  if (!empty($filepath)) {

    $info = pathinfo($filepath);

    $file_name = $info['basename'];

  }

  return isset($file_name) ? $file_name : '';

}

/**

 * Helper function to create proper URLs for uploaded file.

 */

function webform_file_url($uri) {

  if (!empty($uri)) {

    $file_url = file_create_url($uri);

  }

  return isset($file_url) ? $file_url : '';

}

/**

 * Helper function to load a file from the database.

 */

function webform_get_file($fid) {

  // Simple check to prevent loading of NULL values, which throws an entity

  // system error.

  return $fid ? file_load($fid) : FALSE;

}

/**

 * Given a submission with file_usage set, add or remove file usage entries.

 */

function webform_file_usage_adjust($submission) {

  if (isset($submission->file_usage)) {

    $files = file_load_multiple($submission->file_usage['added_fids']);

    foreach ($files as $file) {

      $file->status = 1;

      file_save($file);

      file_usage_add($file, 'webform', 'submission', $submission->sid);

    }

    $files = file_load_multiple($submission->file_usage['deleted_fids']);

    foreach ($files as $file) {

      file_usage_delete($file, 'webform', 'submission', $submission->sid);

      file_delete($file);

    }

  }

}