/**
*
* @param array $current_import
* @return bool
*/
function import(array $current_import)
{
// fetch the remote content
$html = wp_remote_get($current_import['file']);
// Something failed
if (is_wp_error($html)) {
$redirect_url = get_admin_url(get_current_blog_id(), '/tools.php?page=pb_import');
error_log('\\PressBooks\\Import\\Html import error, wp_remote_get() ' . $html->get_error_message());
$_SESSION['pb_errors'][] = $html->get_error_message();
$this->revokeCurrentImport();
\Pressbooks\Redirect\location($redirect_url);
}
$url = parse_url($current_import['file']);
// get parent directory (with forward slash e.g. /parent)
$path = dirname($url['path']);
$domain = $url['scheme'] . '://' . $url['host'] . $path;
// get id (there will be only one)
$id = array_keys($current_import['chapters']);
// front-matter, chapter, or back-matter
$post_type = $this->determinePostType($id[0]);
$chapter_parent = $this->getChapterParent();
$body = $this->kneadandInsert($html['body'], $post_type, $chapter_parent, $domain);
// Done
return $this->revokeCurrentImport();
}
/**
* Runs activation function and sets up default WP options for new blog,
* a.k.a. when a registered user creates a new blog
*
* @param int $blog_id
* @param int $user_id
*
* @see add_action( 'wpmu_new_blog', ... )
*/
function wpmuNewBlog($blog_id, $user_id)
{
$this->blog_id = (int) $blog_id;
$this->user_id = (int) $user_id;
switch_to_blog($this->blog_id);
if (!$this->isBookSetup()) {
$this->wpmuActivate();
array_walk($this->opts, function ($v, $k) {
if (empty($v)) {
delete_option($k);
} else {
update_option($k, $v);
}
});
wp_cache_flush();
}
// Set current metadata version to skip redundant upgrade routines
update_option('pressbooks_metadata_version', \Pressbooks\Metadata::$currentVersion);
flush_rewrite_rules(false);
do_action('pressbooks_new_blog');
restore_current_blog();
if (is_user_logged_in()) {
(new \Pressbooks\Catalog())->deleteCache();
\Pressbooks\Redirect\location(get_admin_url($this->blog_id));
}
}
/**
* Imports user selected chapters from an instance of PB
*
* @param array $chapters
* Array(
[5] => Array(
[222] => chapter
)
[14] => Array(
[164] => front-matter
)
)
* @return type
*/
function import(array $chapters)
{
$this->chapters = $chapters;
$chapters_to_import = $this->getChapters();
libxml_use_internal_errors(true);
foreach ($chapters_to_import as $new_post) {
// Load HTMl snippet into DOMDocument using UTF-8 hack
$utf8_hack = '<?xml version="1.0" encoding="UTF-8"?>';
$doc = new \DOMDocument();
$doc->loadHTML($utf8_hack . $new_post['post_content']);
// Download images, change image paths
$doc = $this->scrapeAndKneadImages($doc);
$html = $doc->saveXML($doc->documentElement);
// Remove auto-created <html> <body> and <!DOCTYPE> tags.
$html = preg_replace('/^<!DOCTYPE.+?>/', '', str_replace(array('<html>', '</html>', '<body>', '</body>'), array('', '', '', ''), $html));
$import_post = array('post_title' => $new_post['post_title'], 'post_content' => $html, 'post_type' => $new_post['post_type'], 'post_status' => $new_post['post_status']);
// set post parent
if ('chapter' == $new_post['post_type']) {
$post_parent = $this->getChapterParent();
$import_post['post_parent'] = $post_parent;
}
// woot, woot!
$pid = wp_insert_post($import_post);
// check for errors, redirect and record
if (is_wp_error($pid)) {
error_log('\\PBT\\Import\\PBImport()->import error at `wp_insert_post()`: ' . $pid->get_error_message());
\PBT\Search\ApiSearch::revokeCurrentImport();
\Pressbooks\Redirect\location(get_bloginfo('url') . '/wp-admin/admin.php?page=api_search_import');
}
// set post metadata
$this->setPostMeta($pid, $new_post);
\Pressbooks\Book::consolidatePost($pid, get_post($pid));
}
return \PBT\Search\ApiSearch::revokeCurrentImport();
}
/**
* Force the user to edit custom-css posts in our custom editor.
*/
function redirect_css_editor()
{
$post_id = absint(@$_REQUEST['post']);
if (!$post_id) {
return;
// Do nothing
}
$post = get_post($post_id);
if (!$post) {
return;
// Do nothing
}
if ('custom-css' != $post->post_type) {
return;
// Do nothing
}
$redirect_url = get_admin_url(get_current_blog_id(), '/themes.php?page=pb_custom_css&slug=' . $post->post_name);
\Pressbooks\Redirect\location($redirect_url);
}
/**
* Catch form submissions
*
* @see pressbooks/templates/admin/import.php
*/
public static function formSubmit()
{
// --------------------------------------------------------------------------------------------------------
// Sanity check
if (false == static::isFormSubmission() || false == current_user_can('edit_posts')) {
// Don't do anything in this function, bail.
return;
}
// --------------------------------------------------------------------------------------------------------
// Determine at what stage of the import we are and do something about it
$redirect_url = get_admin_url(get_current_blog_id(), '/tools.php?page=pb_import');
$current_import = get_option('pressbooks_current_import');
// Revoke
if (@$_GET['revoke'] && check_admin_referer('pb-revoke-import')) {
self::revokeCurrentImport();
\Pressbooks\Redirect\location($redirect_url);
}
// only html import uses a url, not a file path
if (0 !== strcmp($current_import['type_of'], 'html')) {
// Appends 'last part' of the path to the dynamic first part of the path ($upload_dir)
$upload_dir = wp_upload_dir();
$current_import['file'] = trailingslashit($upload_dir['path']) . basename($current_import['file']);
}
if (@$_GET['import'] && is_array(@$_POST['chapters']) && is_array($current_import) && isset($current_import['file']) && check_admin_referer('pb-import')) {
// --------------------------------------------------------------------------------------------------------
// Do Import
@set_time_limit(300);
$ok = false;
switch ($current_import['type_of']) {
case 'epub':
$importer = new Epub\Epub201();
$ok = $importer->import($current_import);
break;
case 'wxr':
$importer = new Wordpress\Wxr();
$ok = $importer->import($current_import);
break;
case 'odt':
$importer = new Odf\Odt();
$ok = $importer->import($current_import);
break;
case 'docx':
$importer = new Ooxml\Docx();
$ok = $importer->import($current_import);
break;
case 'html':
$importer = new Html\Xhtml();
$ok = $importer->import($current_import);
}
$msg = "Tried to import a file of type {$current_import['type_of']} and ";
$msg .= $ok ? 'succeeded :)' : 'failed :(';
self::log($msg, $current_import);
if ($ok) {
// Success! Redirect to organize page
$success_url = get_admin_url(get_current_blog_id(), '/admin.php?page=pressbooks');
\Pressbooks\Redirect\location($success_url);
}
} elseif (@$_GET['import'] && !@empty($_FILES['import_file']['name']) && @$_POST['type_of'] && check_admin_referer('pb-import')) {
// --------------------------------------------------------------------------------------------------------
// Set the 'pressbooks_current_import' option
$allowed_file_types = array('epub' => 'application/epub+zip', 'xml' => 'application/xml', 'odt' => 'application/vnd.oasis.opendocument.text', 'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document');
$overrides = array('test_form' => false, 'mimes' => $allowed_file_types);
if (!function_exists('wp_handle_upload')) {
require_once ABSPATH . 'wp-admin/includes/file.php';
}
$upload = wp_handle_upload($_FILES['import_file'], $overrides);
if (!empty($upload['error'])) {
// Error, redirect back to form
$_SESSION['pb_notices'][] = $upload['error'];
\Pressbooks\Redirect\location($redirect_url);
}
$ok = false;
switch ($_POST['type_of']) {
case 'wxr':
$importer = new Wordpress\Wxr();
$ok = $importer->setCurrentImportOption($upload);
break;
case 'epub':
$importer = new Epub\Epub201();
$ok = $importer->setCurrentImportOption($upload);
break;
case 'odt':
$importer = new Odf\Odt();
$ok = $importer->setCurrentImportOption($upload);
break;
case 'docx':
$importer = new Ooxml\Docx();
$ok = $importer->setCurrentImportOption($upload);
break;
}
$msg = "Tried to upload a file of type {$_POST['type_of']} and ";
$msg .= $ok ? 'succeeded :)' : 'failed :(';
self::log($msg, $upload);
if (!$ok) {
// Not ok?
$_SESSION['pb_errors'][] = sprintf(__('Your file does not appear to be a valid %s.', 'pressbooks'), strtoupper($_POST['type_of']));
unlink($upload['file']);
}
} elseif (@$_GET['import'] && 'html' === @$_POST['type_of'] && check_admin_referer('pb-import')) {
// check if it's a valid url
if (false == filter_var($_POST['import_html'], FILTER_VALIDATE_URL)) {
$_SESSION['pb_errors'][] = __('Your URL does not appear to be valid', 'pressbooks');
\Pressbooks\Redirect\location($redirect_url);
}
// HEAD request, check for a valid response from server
$remote_head = wp_remote_head($_POST['import_html']);
// Something failed
if (is_wp_error($remote_head)) {
error_log('\\Pressbooks\\Modules\\Import::formSubmit html import error, wp_remote_head()' . $remote_head->get_error_message());
$_SESSION['pb_errors'][] = $remote_head->get_error_message();
\Pressbooks\Redirect\location($redirect_url);
}
// weebly.com (and likely some others) prevent HEAD requests, but allow GET requests
if (200 !== $remote_head['response']['code'] && 405 !== $remote_head['response']['code']) {
$_SESSION['pb_errors'][] = __('The website you are attempting to reach is not returning a successful response header on a HEAD request: ', 'pressbooks') . $remote_head['response']['code'];
\Pressbooks\Redirect\location($redirect_url);
}
// ensure the media type is HTML (not JSON, or something we can't deal with)
if (false === strpos($remote_head['headers']['content-type'], 'text/html') && false === strpos($remote_head['headers']['content-type'], 'application/xhtml+xml')) {
$_SESSION['pb_errors'][] = __('The website you are attempting to reach is not returning HTML content', 'pressbooks');
\Pressbooks\Redirect\location($redirect_url);
}
// GET http request
$body = wp_remote_get($_POST['import_html']);
// check for wp error
if (is_wp_error($body)) {
$error_message = $body->get_error_message();
error_log('\\Pressbooks\\Modules\\Import::formSubmit error, import_html' . $error_message);
$_SESSION['pb_errors'][] = $error_message;
\Pressbooks\Redirect\location($redirect_url);
}
// check for a successful response code on GET request
if (200 !== $body['response']['code']) {
$_SESSION['pb_errors'][] = __('The website you are attempting to reach is not returning a successful response on a GET request: ', 'pressbooks') . $body['response']['code'];
\Pressbooks\Redirect\location($redirect_url);
}
// add our url
$body['url'] = $_POST['import_html'];
$importer = new Html\Xhtml();
$ok = $importer->setCurrentImportOption($body);
$msg = "Tried to upload a file of type {$_POST['type_of']} and ";
$msg .= $ok ? 'succeeded :)' : 'failed :(';
self::log($msg, $body['headers']);
if (!$ok) {
// Not ok?
$_SESSION['pb_errors'][] = sprintf(__('Your file does not appear to be a valid %s.', 'pressbooks'), strtoupper($_POST['type_of']));
}
}
// Default, back to form
\Pressbooks\Redirect\location($redirect_url);
}
/**
* Uses v1/api to get an array of public books from a PB instance
*
* @param string $endpoint API url
* @return array of books
* [2] => Array(
* [title] => Brad can has book
* [author] => Brad Payne
* [license] => cc-by-sa
* )
* [5] => Array(
* [title] => Help, I'm a Book!
* [author] => Frank Zappa
* [license] => cc-by-nc-sa
* )
*/
static function getPublicBooks($endpoint, $search = '')
{
$books = array();
$current_book = get_current_blog_id();
$domain = parse_url($endpoint, PHP_URL_HOST);
$titles = !empty($search) ? '?titles=' . $search : '';
// build the url, get list of public books
$public_books = wp_remote_get($endpoint . 'books' . '/' . $titles);
if (is_wp_error($public_books)) {
error_log('\\PBT\\Search\\getPublicBooks error: ' . $public_books->get_error_message());
\Pressbooks\Redirect\location(get_bloginfo('url') . '/wp-admin/admin.php?page=api_search_import');
}
$public_books_array = json_decode($public_books['body'], true);
// something goes wrong at the API level/response
if (0 == $public_books_array['success']) {
return;
}
// a valid response
if (false !== $public_books_array) {
foreach ($public_books_array['data'] as $id => $val) {
$books[$id] = array('title' => $public_books_array['data'][$id]['book_meta']['pb_title'], 'author' => $public_books_array['data'][$id]['book_meta']['pb_author'], 'license' => $public_books_array['data'][$id]['book_meta']['pb_book_license'], 'domain' => $domain);
if (0 === strcmp('all-rights-reserved', $books[$id]['license'])) {
unset($books[$id]);
}
}
}
// don't return results from the book where the search is happening, only if searching this instance of PB
if (isset($books[$current_book]) && $endpoint == network_home_url()) {
unset($books[$current_book]);
}
if (!empty($books)) {
// cache public books for 12 hours
set_transient('pbt-public-books-' . $domain, $books, 43200);
}
return $books;
}
/**
* Add Book by URL
*/
static function formAddByUrl()
{
check_admin_referer('bulk-books');
// Nonce auto-generated by WP_List_Table
$catalog = new static();
$user_id = $catalog->getUserId();
// Set Redirect URL
if (get_current_user_id() != $user_id) {
$redirect_url = get_admin_url(get_current_blog_id(), '/index.php?page=pb_catalog&user_id=' . $user_id);
} else {
$redirect_url = get_admin_url(get_current_blog_id(), '/index.php?page=pb_catalog');
}
$url = parse_url(\Pressbooks\Sanitize\canonicalize_url($_REQUEST['add_book_by_url']));
$main = parse_url(network_site_url());
if (strpos($url['host'], $main['host']) === false) {
$_SESSION['pb_errors'][] = __('Invalid URL.', 'pressbooks');
\Pressbooks\Redirect\location($redirect_url);
}
if ($url['host'] == $main['host']) {
// Get slug using the path
$slug = str_replace($main['path'], '', $url['path']);
$slug = trim($slug, '/');
$slug = explode('/', $slug);
$slug = $slug[0];
} else {
// Get slug using host
$slug = str_replace($main['host'], '', $url['host']);
$slug = trim($slug, '.');
$slug = explode('.', $slug);
$slug = $slug[0];
}
$book_id = get_id_from_blogname($slug);
if (!$book_id) {
$_SESSION['pb_errors'][] = __('No book found.', 'pressbooks');
\Pressbooks\Redirect\location($redirect_url);
}
// if ( ! get_blog_option( $book_id, 'blog_public' ) ) {
// $_SESSION['pb_errors'][] = __( 'Book is not public', 'pressbooks' );
// \Pressbooks\Redirect\location( $redirect_url );
// }
$catalog->saveBook($book_id, array());
$catalog->deleteCache();
// Ok!
$_SESSION['pb_notices'][] = __('Settings saved.');
// Redirect back to form
\Pressbooks\Redirect\location($redirect_url);
}
/**
* Redirect away from (what we consider) bad WordPress admin pages
*/
function redirect_away_from_bad_urls()
{
if (is_super_admin()) {
return;
// Do nothing
}
$check_against_url = parse_url((is_ssl() ? 'http://' : 'https://') . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'], PHP_URL_PATH);
$redirect_url = get_site_url(get_current_blog_id(), '/wp-admin/');
// ---------------------------------------------------------------------------------------------------------------
// If user is on post-new.php, check for valid post_type
if (preg_match('~/wp-admin/post-new\\.php$~', $check_against_url)) {
if (!in_array(@$_REQUEST['post_type'], \Pressbooks\PostType\list_post_types())) {
$_SESSION['pb_notices'][] = __('Unsupported post type.', 'pressbooks');
\Pressbooks\Redirect\location($redirect_url);
}
}
// ---------------------------------------------------------------------------------------------------------------
// Don't let user go to any of these pages, under any circumstance
$restricted = array('edit-tags', 'export', 'import', 'link-(manager|add)', 'nav-menus', 'options-(discussion|media|permalink|reading|writing)', 'plugin-(install|editor)', 'theme-editor', 'update-core', 'widgets');
// Todo: Fine grained control over: options-general.php
$expr = '~/wp-admin/(' . implode('|', $restricted) . ')\\.php$~';
if (preg_match($expr, $check_against_url)) {
$_SESSION['pb_notices'][] = __('You do not have sufficient permissions to access that URL.', 'pressbooks');
\Pressbooks\Redirect\location($redirect_url);
}
}
/**
* Save custom CSS to database (and filesystem)
*
* @see pressbooks/templates/admin/custom-css.php
*/
static function formSubmit()
{
if (false == static::isFormSubmission() || false == current_user_can('edit_theme_options')) {
// Don't do anything in this function, bail.
return;
}
// Process form
if ('yes' == @$_GET['customcss'] && isset($_POST['my_custom_css']) && check_admin_referer('pb-custom-css')) {
$slug = isset($_POST['slug']) ? $_POST['slug'] : 'web';
$redirect_url = get_admin_url(get_current_blog_id(), '/themes.php?page=pb_custom_css&slug=' . $slug);
if (md5(NONCE_KEY . @$_POST['post_id']) != @$_POST['post_id_integrity']) {
// A hacker trying to overwrite posts?.
error_log('\\Pressbooks\\CustomCss::formSubmit error: unexpected value for post_id_integrity');
\Pressbooks\Redirect\location($redirect_url . '&customcss_error=true');
}
// Write to database
$my_post = array('ID' => absint($_POST['post_id']), 'post_content' => static::cleanupCss($_POST['my_custom_css']));
$response = wp_update_post($my_post, true);
if (is_wp_error($response)) {
// Something went wrong?
error_log('\\Pressbooks\\CustomCss::formSubmit error, wp_update_post(): ' . $response->get_error_message());
\Pressbooks\Redirect\location($redirect_url . '&customcss_error=true');
}
// Write to file
$my_post['post_content'] = stripslashes($my_post['post_content']);
// We purposely send \\A0 to WordPress, but we want to send \A0 to the file system
$filename = static::getCustomCssFolder() . sanitize_file_name($slug . '.css');
file_put_contents($filename, $my_post['post_content']);
// Update "version"
update_option('pressbooks_last_custom_css', time());
// Ok!
\Pressbooks\Redirect\location($redirect_url);
}
}
/**
* Catch form submissions
*
* @see pressbooks/templates/admin/export.php
*/
static function formSubmit()
{
if (false == static::isFormSubmission() || false == current_user_can('edit_posts')) {
// Don't do anything in this function, bail.
return;
}
// Set locale to UTF8 so escapeshellcmd() doesn't strip valid characters.
setlocale(LC_CTYPE, 'UTF8', 'en_US.UTF-8');
putenv('LC_CTYPE=en_US.UTF-8');
// Override some WP behaviours when exporting
\Pressbooks\Sanitize\fix_audio_shortcode();
// Download
if (!empty($_GET['download_export_file'])) {
$filename = sanitize_file_name($_GET['download_export_file']);
static::downloadExportFile($filename);
}
// Delete
if (isset($_POST['delete_export_file']) && isset($_POST['filename']) && check_admin_referer('pb-delete-export')) {
$filename = sanitize_file_name($_POST['filename']);
$path = static::getExportFolder();
unlink($path . $filename);
delete_transient('dirsize_cache');
/** @see get_dirsize() */
\Pressbooks\Redirect\location(get_admin_url(get_current_blog_id(), '/admin.php?page=pb_export'));
}
// Export
if ('yes' == @$_GET['export'] && is_array(@$_POST['export_formats']) && check_admin_referer('pb-export')) {
// --------------------------------------------------------------------------------------------------------
// Define modules
$x = $_POST['export_formats'];
$modules = array();
if (isset($x['pdf'])) {
$modules[] = '\\Pressbooks\\Modules\\Export\\Prince\\Pdf';
}
if (isset($x['print_pdf'])) {
$modules[] = '\\Pressbooks\\Modules\\Export\\Prince\\PrintPdf';
}
if (isset($x['mpdf'])) {
$modules[] = '\\Pressbooks\\Modules\\Export\\Mpdf\\Pdf';
}
if (isset($x['epub'])) {
$modules[] = '\\Pressbooks\\Modules\\Export\\Epub\\Epub201';
// Must be set before MOBI
}
if (isset($x['epub3'])) {
$modules[] = '\\Pressbooks\\Modules\\Export\\Epub\\Epub3';
// Must be set before MOBI
}
if (isset($x['mobi'])) {
if (!isset($x['epub'])) {
// Make sure Epub source file is generated
$modules[] = '\\Pressbooks\\Modules\\Export\\Epub\\Epub201';
// Must be set before MOBI
}
$modules[] = '\\Pressbooks\\Modules\\Export\\Mobi\\Kindlegen';
// Must be set after EPUB
}
if (isset($x['icml'])) {
$modules[] = '\\Pressbooks\\Modules\\Export\\InDesign\\Icml';
}
if (isset($x['xhtml'])) {
$modules[] = '\\Pressbooks\\Modules\\Export\\Xhtml\\Xhtml11';
}
if (isset($x['wxr'])) {
$modules[] = '\\Pressbooks\\Modules\\Export\\WordPress\\Wxr';
}
if (isset($x['vanillawxr'])) {
$modules[] = '\\Pressbooks\\Modules\\Export\\WordPress\\VanillaWxr';
}
if (isset($x['odt'])) {
$modules[] = '\\Pressbooks\\Modules\\Export\\Odt\\Odt';
}
// --------------------------------------------------------------------------------------------------------
// Clear cache? Range is 1 hour.
$last_export = get_option('pressbooks_last_export');
$within_range = time() - $last_export;
if ($within_range > 60 * 60) {
\Pressbooks\Book::deleteBookObjectCache();
update_option('pressbooks_last_export', time());
}
// --------------------------------------------------------------------------------------------------------
// Do Export
@set_time_limit(300);
$redirect_url = get_admin_url(get_current_blog_id(), '/admin.php?page=pb_export');
$conversion_error = array();
$validation_warning = array();
$outputs = array();
foreach ($modules as $module) {
/** @var \Pressbooks\Modules\Export\Export $exporter */
$exporter = new $module(array());
if (!$exporter->convert()) {
$conversion_error[$module] = $exporter->getOutputPath();
} else {
if (!$exporter->validate()) {
$validation_warning[$module] = $exporter->getOutputPath();
}
}
// Add to outputs array
$outputs[$module] = $exporter->getOutputPath();
// Stats hook
do_action('pressbooks_track_export', substr(strrchr($module, '\\'), 1));
}
delete_transient('dirsize_cache');
/** @see get_dirsize() */
// --------------------------------------------------------------------------------------------------------
// MOBI cleanup
if (isset($x['mobi']) && !isset($x['epub'])) {
unlink($outputs['\\Pressbooks\\Modules\\Export\\Epub\\Epub201']);
}
// --------------------------------------------------------------------------------------------------------
// No errors?
if (empty($conversion_error) && empty($validation_warning)) {
// Ok!
\Pressbooks\Redirect\location($redirect_url);
}
// --------------------------------------------------------------------------------------------------------
// Error exceptions
if (isset($validation_warning['\\Pressbooks\\Modules\\Export\\Prince\\Pdf'])) {
// The PDF is garbage and we don't want the user to have it.
// Delete file. Report error instead of warning.
unlink($validation_warning['\\Pressbooks\\Modules\\Export\\Prince\\Pdf']);
$conversion_error['\\Pressbooks\\Modules\\Export\\Prince\\Pdf'] = $validation_warning['\\Pressbooks\\Modules\\Export\\Prince\\Pdf'];
unset($validation_warning['\\Pressbooks\\Modules\\Export\\Prince\\Pdf']);
}
if (isset($validation_warning['\\Pressbooks\\Modules\\Export\\Prince\\PrintPdf'])) {
// The PDF is garbage and we don't want the user to have it.
// Delete file. Report error instead of warning.
unlink($validation_warning['\\Pressbooks\\Modules\\Export\\Prince\\PrintPdf']);
$conversion_error['\\Pressbooks\\Modules\\Export\\Prince\\PrintPdf'] = $validation_warning['\\Pressbooks\\Modules\\Export\\Prince\\PrintPdf'];
unset($validation_warning['\\Pressbooks\\Modules\\Export\\Prince\\PrintPdf']);
}
// --------------------------------------------------------------------------------------------------------
// Errors :(
if (count($conversion_error)) {
// Conversion error
\Pressbooks\Redirect\location($redirect_url . '&export_error=true');
}
if (count($validation_warning)) {
// Validation warning
\Pressbooks\Redirect\location($redirect_url . '&export_warning=true');
}
}
}
/**
*
*/
function restrict_access()
{
global $wpdb;
$user = wp_get_current_user();
$restricted = $wpdb->get_results("SELECT * FROM {$wpdb->sitemeta} WHERE meta_key = 'pressbooks_network_managers'");
if ($restricted) {
$restricted = maybe_unserialize($restricted[0]->meta_value);
} else {
$restricted = array();
}
$check_against_url = parse_url((is_ssl() ? 'http://' : 'https://') . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'], PHP_URL_PATH);
$redirect_url = get_site_url() . '/wp-admin/network/';
// ---------------------------------------------------------------------------------------------------------------
// Don't let user go to any of these pages, under any circumstances
$restricted_urls = array('themes', 'theme-(install|editor)', 'plugins', 'plugin-(install|editor)', 'settings', 'update-core', 'upgrade');
$expr = '~/wp-admin/network/(' . implode('|', $restricted_urls) . ')\\.php$~';
if (in_array($user->ID, $restricted) && preg_match($expr, $check_against_url)) {
\Pressbooks\Redirect\location($redirect_url);
}
}