--- /dev/null
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\filefield_sources\Plugin\FilefieldSource\Attach.
+ */
+
+namespace Drupal\filefield_sources\Plugin\FilefieldSource;
+
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\filefield_sources\FilefieldSourceInterface;
+use Drupal\Core\Field\WidgetInterface;
+use Drupal\Component\Utility\NestedArray;
+use Drupal\Core\Site\Settings;
+use Drupal\Core\Template\Attribute;
+
+/**
+ * A FileField source plugin to allow use of files within a server directory.
+ *
+ * @FilefieldSource(
+ * id = "attach",
+ * name = @Translation("File attach from server directory"),
+ * label = @Translation("File attach"),
+ * description = @Translation("Select a file from a directory on the server."),
+ * weight = 3
+ * )
+ */
+class Attach implements FilefieldSourceInterface {
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function value(array &$element, &$input, FormStateInterface $form_state) {
+ if (!empty($input['filefield_attach']['filename'])) {
+ $instance = entity_load('field_config', $element['#entity_type'] . '.' . $element['#bundle'] . '.' . $element['#field_name']);
+ $filepath = $input['filefield_attach']['filename'];
+
+ // Check that the destination is writable.
+ $directory = $element['#upload_location'];
+ $mode = Settings::get('file_chmod_directory', FILE_CHMOD_DIRECTORY);
+
+ // This first chmod check is for other systems such as S3, which don't
+ // work with file_prepare_directory().
+ if (!drupal_chmod($directory, $mode) && !file_prepare_directory($directory, FILE_CREATE_DIRECTORY)) {
+ \Drupal::logger('filefield_sources')->log(E_NOTICE, 'File %file could not be copied, because the destination directory %destination is not configured correctly.', array(
+ '%file' => $filepath,
+ '%destination' => drupal_realpath($directory),
+ ));
+ drupal_set_message(t('The specified file %file could not be copied, because the destination directory is not properly configured. This may be caused by a problem with file or directory permissions. More information is available in the system log.', array('%file' => $filepath)), 'error');
+ return;
+ }
+
+ // Clean up the file name extensions and transliterate.
+ $original_filepath = $filepath;
+ $new_filepath = filefield_sources_clean_filename($filepath, $instance->getSetting('file_extensions'));
+ rename($filepath, $new_filepath);
+ $filepath = $new_filepath;
+
+ // Run all the normal validations, minus file size restrictions.
+ $validators = $element['#upload_validators'];
+ if (isset($validators['file_validate_size'])) {
+ unset($validators['file_validate_size']);
+ }
+
+ // Save the file to the new location.
+ if ($file = filefield_sources_save_file($filepath, $validators, $directory)) {
+ if (!in_array($file->id(), $input['fids'])) {
+ $input['fids'][] = $file->id();
+ }
+
+ // Delete the original file if "moving" the file instead of copying.
+ if ($element['#filefield_sources_settings']['source_attach']['attach_mode'] !== FILEFIELD_SOURCE_ATTACH_MODE_COPY) {
+ @unlink($filepath);
+ }
+ }
+
+ // Restore the original file name if the file still exists.
+ if (file_exists($filepath) && $filepath != $original_filepath) {
+ rename($filepath, $original_filepath);
+ }
+
+ $input['filefield_attach']['filename'] = '';
+ }
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function process(array &$element, FormStateInterface $form_state, array &$complete_form) {
+ $settings = $element['#filefield_sources_settings']['source_attach'];
+ $field_name = $element['#field_name'];
+ $instance = entity_load('field_config', $element['#entity_type'] . '.' . $element['#bundle'] . '.' . $field_name);
+
+ $element['filefield_attach'] = array(
+ '#weight' => 100.5,
+ '#theme' => 'filefield_sources_element',
+ '#source_id' => 'attach',
+ // Required for proper theming.
+ '#filefield_source' => TRUE,
+ );
+
+ $path = static::getDirectory($settings);
+ $options = static::getAttachOptions($path, $instance->getSetting('file_extensions'));
+
+ // If we have built this element before, append the list of options that we
+ // had previously. This allows files to be deleted after copying them and
+ // still be considered a valid option during the validation and submit.
+ $triggering_element = $form_state->getTriggeringElement();
+ $property = array(
+ 'filefield_sources',
+ $field_name,
+ 'attach_options',
+ );
+ if (!isset($triggering_element) && $form_state->has($property)) {
+ $attach_options = $form_state->get($property);
+ $options = $options + $attach_options;
+ }
+ // On initial form build and rebuilds after processing input, save the
+ // original list of options so they can be restored in the line above.
+ else {
+ $form_state->set(array('filefield_sources', $field_name, 'attach_options'), $options);
+ }
+
+ $description = t('This method may be used to attach files that exceed the file size limit. Files may be attached from the %directory directory on the server, usually uploaded through FTP.', array('%directory' => realpath($path)));
+
+ // Error messages.
+ if ($options === FALSE || empty($settings['path'])) {
+ $attach_message = t('A file attach directory could not be located.');
+ $attach_description = t('Please check your settings for the %field field.', array('%field' => $instance->getLabel()));
+ }
+ elseif (!count($options)) {
+ $attach_message = t('There currently are no files to attach.');
+ $attach_description = $description;
+ }
+
+ if (isset($attach_message)) {
+ $element['filefield_attach']['attach_message'] = array(
+ '#markup' => $attach_message,
+ );
+ $element['filefield_attach']['#description'] = $attach_description;
+ }
+ else {
+ $validators = $element['#upload_validators'];
+ if (isset($validators['file_validate_size'])) {
+ unset($validators['file_validate_size']);
+ }
+ $description .= '<br />' . filefield_sources_element_validation_help($validators);
+ $element['filefield_attach']['filename'] = array(
+ '#type' => 'select',
+ '#options' => $options,
+ );
+ $element['filefield_attach']['#description'] = $description;
+ }
+ $class = '\Drupal\file\Element\ManagedFile';
+ $ajax_settings = [
+ 'callback' => [$class, 'uploadAjaxCallback'],
+ 'options' => [
+ 'query' => [
+ 'element_parents' => implode('/', $element['#array_parents']),
+ ],
+ ],
+ 'wrapper' => $element['upload_button']['#ajax']['wrapper'],
+ 'effect' => 'fade',
+ ];
+ $element['filefield_attach']['attach'] = [
+ '#name' => implode('_', $element['#parents']) . '_attach',
+ '#type' => 'submit',
+ '#value' => t('Attach'),
+ '#validate' => [],
+ '#submit' => ['filefield_sources_field_submit'],
+ '#limit_validation_errors' => [$element['#parents']],
+ '#ajax' => $ajax_settings,
+ ];
+
+ return $element;
+ }
+
+ /**
+ * Theme the output of the attach element.
+ */
+ public static function element($variables) {
+ $element = $variables['element'];
+ if (isset($element['attach_message'])) {
+ $output = $element['attach_message']['#markup'];
+ }
+ elseif (isset($element['filename'])) {
+ // Get rendered options.
+ $options = form_select_options($element['filename']);
+ $option_output = '';
+ foreach ($options as $key => $value) {
+ $option_output .= '<option value=' . $value["value"] . '>' . $value["label"] . '</option>';
+ }
+ // Get rendered select.
+ $size = !empty($element['filename']['#size']) ? ' size="' . $element['filename']['#size'] . '"' : '';
+ $element['filename']['#attributes']['class'][] = 'form-select';
+ $multiple = !empty($element['#multiple']);
+ $output = '<select name="' . $element['filename']['#name'] . '' . ($multiple ? '[]' : '') . '"' . ($multiple ? ' multiple="multiple" ' : '') . new Attribute($element['filename']['#attributes']) . ' id="' . $element['filename']['#id'] . '" ' . $size . '>' . $option_output . '</select>';
+ }
+
+ $output .= drupal_render($element['attach']);
+ $element['#children'] = $output;
+ $element['#theme_wrappers'] = array('form_element');
+ return '<div class="filefield-source filefield-source-attach clear-block">' . drupal_render($element) . '</div>';
+ }
+
+ /**
+ * Get directory from settings.
+ *
+ * @param array $settings
+ * Attach source's settings.
+ * @param object $account
+ * User to replace token.
+ *
+ * @return string
+ * Path that contains files to attach.
+ */
+ protected static function getDirectory(array $settings, $account = NULL) {
+ $account = isset($account) ? $account : \Drupal::currentUser();
+ $path = $settings['path'];
+ $absolute = !empty($settings['absolute']);
+
+ // Replace user level tokens.
+ // Node level tokens require a lot of complexity like temporary storage
+ // locations when values don't exist. See the filefield_paths module.
+ if (\Drupal::moduleHandler()->moduleExists('token')) {
+ $token = \Drupal::token();
+ $path = $token->replace($path, array('user' => $account));
+ }
+
+ return $absolute ? $path : file_default_scheme() . '://' . $path;
+ }
+
+ /**
+ * Get attach options.
+ *
+ * @param string $path
+ * Path to scan files.
+ * @param string $extensions
+ * Path to scan files.
+ *
+ * @return array
+ * List of options.
+ */
+ protected static function getAttachOptions($path, $extensions = FALSE) {
+ if (!file_prepare_directory($path, FILE_CREATE_DIRECTORY)) {
+ drupal_set_message(t('Specified file attach path %path must exist or be writable.', array('%path' => $path)), 'error');
+ return FALSE;
+ }
+
+ $options = array();
+ $pattern = !empty($extensions) ? '/\.(' . strtr($extensions, ' ', '|') . ')$/' : '/.*/';
+ $files = file_scan_directory($path, $pattern);
+
+ if (count($files)) {
+ $options = array('' => t('-- Select file --'));
+ foreach ($files as $file) {
+ $options[$file->uri] = str_replace($path . '/', '', $file->uri);
+ }
+ natcasesort($options);
+ }
+
+ return $options;
+ }
+
+ /**
+ * Implements hook_filefield_source_settings().
+ */
+ public static function settings(WidgetInterface $plugin) {
+ $settings = $plugin->getThirdPartySetting('filefield_sources', 'filefield_sources', array(
+ 'source_attach' => array(
+ 'path' => FILEFIELD_SOURCE_ATTACH_DEFAULT_PATH,
+ 'absolute' => FILEFIELD_SOURCE_ATTACH_RELATIVE,
+ 'attach_mode' => FILEFIELD_SOURCE_ATTACH_MODE_MOVE,
+ ),
+ ));
+
+ $return['source_attach'] = array(
+ '#title' => t('File attach settings'),
+ '#type' => 'details',
+ '#description' => t('File attach allows for selecting a file from a directory on the server, commonly used in combination with FTP.') . ' <strong>' . t('This file source will ignore file size checking when used.') . '</strong>',
+ '#element_validate' => array(array(get_called_class(), 'filePathValidate')),
+ '#weight' => 3,
+ );
+ $return['source_attach']['path'] = array(
+ '#type' => 'textfield',
+ '#title' => t('File attach path'),
+ '#default_value' => $settings['source_attach']['path'],
+ '#size' => 60,
+ '#maxlength' => 128,
+ '#description' => t('The directory within the <em>File attach location</em> that will contain attachable files.'),
+ );
+ if (\Drupal::moduleHandler()->moduleExists('token')) {
+ $return['source_attach']['tokens'] = array(
+ '#theme' => 'token_tree',
+ '#token_types' => array('user'),
+ );
+ }
+ $return['source_attach']['absolute'] = array(
+ '#type' => 'radios',
+ '#title' => t('File attach location'),
+ '#options' => array(
+ FILEFIELD_SOURCE_ATTACH_RELATIVE => t('Within the files directory'),
+ FILEFIELD_SOURCE_ATTACH_ABSOLUTE => t('Absolute server path'),
+ ),
+ '#default_value' => $settings['source_attach']['absolute'],
+ '#description' => t('The <em>File attach path</em> may be with the files directory (%file_directory) or from the root of your server. If an absolute path is used and it does not start with a "/" your path will be relative to your site directory: %realpath.', array('%file_directory' => drupal_realpath(file_default_scheme() . '://'), '%realpath' => realpath('./'))),
+ );
+ $return['source_attach']['attach_mode'] = array(
+ '#type' => 'radios',
+ '#title' => t('Attach method'),
+ '#options' => array(
+ FILEFIELD_SOURCE_ATTACH_MODE_MOVE => t('Move the file directly to the final location'),
+ FILEFIELD_SOURCE_ATTACH_MODE_COPY => t('Leave a copy of the file in the attach directory'),
+ ),
+ '#default_value' => isset($settings['source_attach']['attach_mode']) ? $settings['source_attach']['attach_mode'] : 'move',
+ );
+
+ return $return;
+ }
+
+ /**
+ * Validate file path.
+ *
+ * @param array $element
+ * Form element.
+ * @param \Drupal\Core\Form\FormStateInterface $form_state
+ * Form state.
+ * @param array $complete_form
+ * Complete form.
+ */
+ public static function filePathValidate(array &$element, FormStateInterface $form_state, array &$complete_form) {
+ $parents = $element['#parents'];
+ array_pop($parents);
+ $input_exists = FALSE;
+
+ // Get input of the whole parent element.
+ $input = NestedArray::getValue($form_state->getValues(), $parents, $input_exists);
+ if ($input_exists) {
+ // Only validate if this source is enabled.
+ if (!$input['sources']['attach']) {
+ return;
+ }
+
+ // Strip slashes from the end of the file path.
+ $filepath = rtrim($element['path']['#value'], '\\/');
+ $form_state->setValueForElement($element['path'], $filepath);
+ $filepath = static::getDirectory($input['source_attach']);
+
+ // Check that the directory exists and is writable.
+ if (!file_prepare_directory($filepath, FILE_CREATE_DIRECTORY)) {
+ $form_state->setError($element['path'], t('Specified file attach path %path must exist or be writable.', array('%path' => $filepath)));
+ }
+ }
+ }
+
+}