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<?php
/**
* Import Functions
*
* @package Widget_Importer_Exporter
* @subpackage Functions
* @copyright Copyright (c) 2013 - 2020, ChurchThemes.com, LLC
* @link https://churchthemes.com/plugins/widget-importer-exporter/
* @license https://www.gnu.org/licenses/gpl-2.0.html GPL-2.0-or-later
* @since 0.3
*/
defined('ABSPATH') || exit; // No direct access.
/**
* Process submit
*
* Process uploaded file or pasted contents. If both, use pasted content.
* If neither, show an error telling to use one or the other method.
*
* @since 1.6
*/
function wie_process_submit()
{
// Form not posted
if (empty($_POST)) {
return;
}
// Check nonce
check_admin_referer('wie_import', 'wie_import_nonce');
// Content pasted
if (! empty($_POST['wie_import_data'])) {
wie_submit_import_data();
}
// File uploaded (but not content pasted)
else if (! empty($_FILES['wie_import_file']['name'])) {
wie_upload_import_file();
}
// Nothing provided
else {
wp_die(
wp_kses(
__("You must choose a <b>.wie</b> file to upload or paste its contents.", 'widget-importer-exporter'),
array(
'b' => array(),
)
),
'',
array(
'back_link' => true,
)
);
}
}
add_action('load-tools_page_widget-importer-exporter', 'wie_process_submit');
/**
* Submit import data (copy and paste from file)
*
* If file and content both provided, uses content.
*
* @since 1.6
* @global string $wie_import_results
*/
function wie_submit_import_data()
{
global $wie_import_results;
check_admin_referer('wie_import', 'wie_import_nonce');
if (! empty($_POST['wie_import_data'])) {
$content = '';
// Get content pasted
$content = filter_var(wp_unslash($_POST['wie_import_data']), FILTER_DEFAULT);
$content = trim($content);
// Import the widget data
// Make results available for display on import/export page.
$data = json_decode($content); // Decode file contents to JSON data.
$wie_import_results = wie_import_data($data);
}
}
/**
* Upload import file
*
* If file and content provided, uses content.
*
* @since 0.3
*/
function wie_upload_import_file()
{
check_admin_referer('wie_import', 'wie_import_nonce');
if (! empty($_FILES['wie_import_file']['name'])) {
// Workaround for .wie upload issue introduced by WordPress 4.9.9 / 5.0.1.
add_filter('wp_check_filetype_and_ext', 'wie_allow_multiple_mime_types', 10, 4);
// Workaround for upload bug in WordPress 4.7.1.
// This will only be applied for WordPress 4.7.1. Other versions are not affected.
add_filter('wp_check_filetype_and_ext', 'wie_disable_real_mime_check', 10, 4);
// Uploaded file.
$uploaded_file = wp_unslash($_FILES['wie_import_file']); // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
$uploaded_file_name = isset($uploaded_file['name']) ? sanitize_file_name($uploaded_file['name']) : '';
$uploaded_file_tmp_name = isset($uploaded_file['tmp_name']) ? sanitize_file_name($uploaded_file['tmp_name']) : '';
// Check file type.
// This will also fire if no file uploaded.
$wp_filetype = wp_check_filetype_and_ext($uploaded_file_tmp_name, $uploaded_file_name, false);
if ('wie' !== $wp_filetype['ext'] && ! wp_match_mime_types( 'wie', $wp_filetype['type'] )) {
wp_die(
wp_kses(
sprintf(
/* translators: %1$s is link to resource to help with error */
__('You must upload a <b>.wie</b> file generated by this plugin (<a href="%1$s" target="_blank">help</a>).', 'widget-importer-exporter'),
'https://churchthemes.com/go/wie-import-sticky'
),
array(
'b' => array(),
'a' => array(
'href' => array(),
'target' => array(),
)
)
),
'',
array(
'back_link' => true,
)
);
}
// Check and move file to uploads dir, get file data
// Will show die with WP errors if necessary (file too large, quota exceeded, etc.).
$file_data = wp_handle_upload($uploaded_file, array(
'test_form' => false,
));
if (isset($file_data['error'])) {
wp_die(
esc_html($file_data['error']),
'',
array(
'back_link' => true,
)
);
}
// Process import file.
wie_process_import_file($file_data['file']);
}
}
/**
* Process import file
*
* This parses a file and triggers importation of its widgets.
*
* @since 0.3
* @param string $file Path to .wie file uploaded.
* @global string $wie_import_results
*/
function wie_process_import_file($file)
{
global $wie_import_results;
// File exists?
if (! file_exists($file)) {
wp_die(
esc_html__('Import file could not be found. Please try again.', 'widget-importer-exporter'),
'',
array(
'back_link' => true,
)
);
}
// Get file contents and decode.
$data = implode('', file($file));
$data = json_decode($data);
// Delete import file.
unlink($file);
// Import the widget data
// Make results available for display on import/export page.
$wie_import_results = wie_import_data($data);
}
/**
* Import widget JSON data
*
* @since 0.4
* @global array $wp_registered_sidebars
* @param object $data JSON widget data from .wie file.
* @return array Results array
*/
function wie_import_data($data)
{
global $wp_registered_sidebars;
// Have valid data?
// If no data or could not decode.
if (empty($data) || ! is_object($data)) {
wp_die(
esc_html__('Import data is invalid.', 'widget-importer-exporter'),
'',
array(
'back_link' => true,
)
);
}
// Hook before import.
do_action('wie_before_import');
$data = apply_filters('wie_import_data', $data);
// Get all available widgets site supports.
$available_widgets = wie_available_widgets();
// Get all existing widget instances.
$widget_instances = array();
foreach ($available_widgets as $widget_data) {
$widget_instances[$widget_data['id_base']] = get_option('widget_' . $widget_data['id_base']);
}
// Begin results.
$results = array();
// Loop import data's sidebars.
foreach ($data as $sidebar_id => $widgets) {
// Skip inactive widgets (should not be in export file).
if ('wp_inactive_widgets' === $sidebar_id) {
continue;
}
// Check if sidebar is available on this site.
// Otherwise add widgets to inactive, and say so.
if (isset($wp_registered_sidebars[$sidebar_id])) {
$sidebar_available = true;
$use_sidebar_id = $sidebar_id;
$sidebar_message_type = 'success';
$sidebar_message = '';
} else {
$sidebar_available = false;
$use_sidebar_id = 'wp_inactive_widgets'; // Add to inactive if sidebar does not exist in theme.
$sidebar_message_type = 'error';
$sidebar_message = esc_html__('Widget area does not exist in theme (using Inactive)', 'widget-importer-exporter');
}
// Result for sidebar
// Sidebar name if theme supports it; otherwise ID.
$results[$sidebar_id]['name'] = ! empty($wp_registered_sidebars[$sidebar_id]['name']) ? $wp_registered_sidebars[$sidebar_id]['name'] : $sidebar_id;
$results[$sidebar_id]['message_type'] = $sidebar_message_type;
$results[$sidebar_id]['message'] = $sidebar_message;
$results[$sidebar_id]['widgets'] = array();
// Loop widgets.
foreach ($widgets as $widget_instance_id => $widget) {
$fail = false;
// Get id_base (remove -# from end) and instance ID number.
$id_base = preg_replace('/-[0-9]+$/', '', $widget_instance_id);
$instance_id_number = str_replace($id_base . '-', '', $widget_instance_id);
// Does site support this widget?
if (! $fail && ! isset($available_widgets[$id_base])) {
$fail = true;
$widget_message_type = 'error';
$widget_message = esc_html__('Site does not support widget', 'widget-importer-exporter'); // Explain why widget not imported.
}
// Filter to modify settings object before conversion to array and import
// Leave this filter here for backwards compatibility with manipulating objects (before conversion to array below)
// Ideally the newer wie_widget_settings_array below will be used instead of this.
$widget = apply_filters('wie_widget_settings', $widget);
// Convert multidimensional objects to multidimensional arrays
// Some plugins like Jetpack Widget Visibility store settings as multidimensional arrays
// Without this, they are imported as objects and cause fatal error on Widgets page
// If this creates problems for plugins that do actually intend settings in objects then may need to consider other approach: https://wordpress.org/support/topic/problem-with-array-of-arrays
// It is probably much more likely that arrays are used than objects, however.
$widget = json_decode(wp_json_encode($widget), true);
// Filter to modify settings array
// This is preferred over the older wie_widget_settings filter above
// Do before identical check because changes may make it identical to end result (such as URL replacements).
$widget = apply_filters('wie_widget_settings_array', $widget);
// Does widget with identical settings already exist in same sidebar?
if (! $fail && isset($widget_instances[$id_base])) {
// Get existing widgets in this sidebar.
$sidebars_widgets = get_option('sidebars_widgets');
$sidebar_widgets = isset($sidebars_widgets[$use_sidebar_id]) ? $sidebars_widgets[$use_sidebar_id] : array(); // Check Inactive if that's where will go.
// Loop widgets with ID base.
$single_widget_instances = ! empty($widget_instances[$id_base]) ? $widget_instances[$id_base] : array();
foreach ($single_widget_instances as $check_id => $check_widget) {
// Is widget in same sidebar and has identical settings?
if (in_array("$id_base-$check_id", $sidebar_widgets, true) && (array) $widget === $check_widget) {
$fail = true;
$widget_message_type = 'warning';
// Explain why widget not imported.
$widget_message = esc_html__('Widget already exists', 'widget-importer-exporter');
break;
}
}
}
// No failure.
if (! $fail) {
// Add widget instance
$single_widget_instances = get_option('widget_' . $id_base); // All instances for that widget ID base, get fresh every time.
$single_widget_instances = ! empty($single_widget_instances) ? $single_widget_instances : array(
'_multiwidget' => 1, // Start fresh if have to.
);
$single_widget_instances[] = $widget; // Add it.
// Get the key it was given.
end($single_widget_instances);
$new_instance_id_number = key($single_widget_instances);
// If key is 0, make it 1
// When 0, an issue can occur where adding a widget causes data from other widget to load,
// and the widget doesn't stick (reload wipes it).
if ('0' === strval($new_instance_id_number)) {
$new_instance_id_number = 1;
$single_widget_instances[$new_instance_id_number] = $single_widget_instances[0];
unset($single_widget_instances[0]);
}
// Move _multiwidget to end of array for uniformity.
if (isset($single_widget_instances['_multiwidget'])) {
$multiwidget = $single_widget_instances['_multiwidget'];
unset($single_widget_instances['_multiwidget']);
$single_widget_instances['_multiwidget'] = $multiwidget;
}
// Update option with new widget.
update_option('widget_' . $id_base, $single_widget_instances);
// Assign widget instance to sidebar.
// Which sidebars have which widgets, get fresh every time.
$sidebars_widgets = get_option('sidebars_widgets');
// Avoid rarely fatal error when the option is an empty string
// https://github.com/churchthemes/widget-importer-exporter/pull/11.
if (! $sidebars_widgets) {
$sidebars_widgets = array();
}
// Use ID number from new widget instance.
$new_instance_id = $id_base . '-' . $new_instance_id_number;
// Add new instance to sidebar.
$sidebars_widgets[$use_sidebar_id][] = $new_instance_id;
// Save the amended data.
update_option('sidebars_widgets', $sidebars_widgets);
// After widget import action.
$after_widget_import = array(
'sidebar' => $use_sidebar_id,
'sidebar_old' => $sidebar_id,
'widget' => $widget,
'widget_type' => $id_base,
'widget_id' => $new_instance_id,
'widget_id_old' => $widget_instance_id,
'widget_id_num' => $new_instance_id_number,
'widget_id_num_old' => $instance_id_number,
);
do_action('wie_after_widget_import', $after_widget_import);
// Success message.
if ($sidebar_available) {
$widget_message_type = 'success';
$widget_message = esc_html__('Imported', 'widget-importer-exporter');
} else {
$widget_message_type = 'warning';
$widget_message = esc_html__('Imported to Inactive', 'widget-importer-exporter');
}
}
// Result for widget instance
$results[$sidebar_id]['widgets'][$widget_instance_id]['name'] = isset($available_widgets[$id_base]['name']) ? $available_widgets[$id_base]['name'] : $id_base; // Widget name or ID if name not available (not supported by site).
$results[$sidebar_id]['widgets'][$widget_instance_id]['title'] = ! empty($widget['title']) ? $widget['title'] : esc_html__('No Title', 'widget-importer-exporter'); // Show "No Title" if widget instance is untitled.
$results[$sidebar_id]['widgets'][$widget_instance_id]['message_type'] = $widget_message_type;
$results[$sidebar_id]['widgets'][$widget_instance_id]['message'] = $widget_message;
}
}
// Hook after import.
do_action('wie_after_import');
// Return results.
return apply_filters('wie_import_results', $results);
}