Web.Admin/2014/wordpress/wp-admin/includes/plugin.php
<?php
/**
* WordPress Plugin Administration API
*
* @package WordPress
* @subpackage Administration
*/
/**
* Parse the plugin contents to retrieve plugin's metadata.
*
* The metadata of the plugin's data searches for the following in the plugin's
* header. All plugin data must be on its own line. For plugin description, it
* must not have any newlines or only parts of the description will be displayed
* and the same goes for the plugin data. The below is formatted for printing.
*
* <code>
* /*
* Plugin Name: Name of Plugin
* Plugin URI: Link to plugin information
* Description: Plugin Description
* Author: Plugin author's name
* Author URI: Link to the author's web site
* Version: Must be set in the plugin for WordPress 2.3+
* Text Domain: Optional. Unique identifier, should be same as the one used in
* plugin_text_domain()
* Domain Path: Optional. Only useful if the translations are located in a
* folder above the plugin's base path. For example, if .mo files are
* located in the locale folder then Domain Path will be "/locale/" and
* must have the first slash. Defaults to the base folder the plugin is
* located in.
* * / # Remove the space to close comment
* </code>
*
* Plugin data returned array contains the following:
* 'Name' - Name of the plugin, must be unique.
* 'Title' - Title of the plugin and the link to the plugin's web site.
* 'Description' - Description of what the plugin does and/or notes
* from the author.
* 'Author' - The author's name
* 'AuthorURI' - The authors web site address.
* 'Version' - The plugin version number.
* 'PluginURI' - Plugin web site address.
* 'TextDomain' - Plugin's text domain for localization.
* 'DomainPath' - Plugin's relative directory path to .mo files.
*
* Some users have issues with opening large files and manipulating the contents
* for want is usually the first 1kiB or 2kiB. This function stops pulling in
* the plugin contents when it has all of the required plugin data.
*
* The first 8kiB of the file will be pulled in and if the plugin data is not
* within that first 8kiB, then the plugin author should correct their plugin
* and move the plugin data headers to the top.
*
* The plugin file is assumed to have permissions to allow for scripts to read
* the file. This is not checked however and the file is only opened for
* reading.
*
* @link http://trac.wordpress.org/ticket/5651 Previous Optimizations.
* @link http://trac.wordpress.org/ticket/7372 Further and better Optimizations.
* @since 1.5.0
*
* @param string $plugin_file Path to the plugin file
* @param bool $markup If the returned data should have HTML markup applied
* @param bool $translate If the returned data should be translated
* @return array See above for description.
*/
function get_plugin_data( $plugin_file, $markup = true, $translate = true ) {
$default_headers = array(
'Name' => 'Plugin Name',
'PluginURI' => 'Plugin URI',
'Version' => 'Version',
'Description' => 'Description',
'Author' => 'Author',
'AuthorURI' => 'Author URI',
'TextDomain' => 'Text Domain',
'DomainPath' => 'Domain Path'
);
$plugin_data = get_file_data( $plugin_file, $default_headers, 'plugin' );
//For backward compatibility by default Title is the same as Name.
$plugin_data['Title'] = $plugin_data['Name'];
if ( $markup || $translate )
$plugin_data = _get_plugin_data_markup_translate( $plugin_file, $plugin_data, $markup, $translate );
return $plugin_data;
}
function _get_plugin_data_markup_translate($plugin_file, $plugin_data, $markup = true, $translate = true) {
//Translate fields
if( $translate && ! empty($plugin_data['TextDomain']) ) {
if( ! empty( $plugin_data['DomainPath'] ) )
load_plugin_textdomain($plugin_data['TextDomain'], false, dirname($plugin_file). $plugin_data['DomainPath']);
else
load_plugin_textdomain($plugin_data['TextDomain'], false, dirname($plugin_file));
foreach ( array('Name', 'PluginURI', 'Description', 'Author', 'AuthorURI', 'Version') as $field )
$plugin_data[ $field ] = translate($plugin_data[ $field ], $plugin_data['TextDomain']);
}
//Apply Markup
if ( $markup ) {
if ( ! empty($plugin_data['PluginURI']) && ! empty($plugin_data['Name']) )
$plugin_data['Title'] = '<a href="' . $plugin_data['PluginURI'] . '" title="' . __( 'Visit plugin homepage' ) . '">' . $plugin_data['Name'] . '</a>';
else
$plugin_data['Title'] = $plugin_data['Name'];
if ( ! empty($plugin_data['AuthorURI']) && ! empty($plugin_data['Author']) )
$plugin_data['Author'] = '<a href="' . $plugin_data['AuthorURI'] . '" title="' . __( 'Visit author homepage' ) . '">' . $plugin_data['Author'] . '</a>';
$plugin_data['Description'] = wptexturize( $plugin_data['Description'] );
if( ! empty($plugin_data['Author']) )
$plugin_data['Description'] .= ' <cite>' . sprintf( __('By %s'), $plugin_data['Author'] ) . '.</cite>';
}
$plugins_allowedtags = array('a' => array('href' => array(),'title' => array()),'abbr' => array('title' => array()),'acronym' => array('title' => array()),'code' => array(),'em' => array(),'strong' => array());
// Sanitize all displayed data
$plugin_data['Title'] = wp_kses($plugin_data['Title'], $plugins_allowedtags);
$plugin_data['Version'] = wp_kses($plugin_data['Version'], $plugins_allowedtags);
$plugin_data['Description'] = wp_kses($plugin_data['Description'], $plugins_allowedtags);
$plugin_data['Author'] = wp_kses($plugin_data['Author'], $plugins_allowedtags);
return $plugin_data;
}
/**
* Get a list of a plugin's files.
*
* @since 2.8.0
*
* @param string $plugin Plugin ID
* @return array List of files relative to the plugin root.
*/
function get_plugin_files($plugin) {
$plugin_file = WP_PLUGIN_DIR . '/' . $plugin;
$dir = dirname($plugin_file);
$plugin_files = array($plugin);
if ( is_dir($dir) && $dir != WP_PLUGIN_DIR ) {
$plugins_dir = @ opendir( $dir );
if ( $plugins_dir ) {
while (($file = readdir( $plugins_dir ) ) !== false ) {
if ( substr($file, 0, 1) == '.' )
continue;
if ( is_dir( $dir . '/' . $file ) ) {
$plugins_subdir = @ opendir( $dir . '/' . $file );
if ( $plugins_subdir ) {
while (($subfile = readdir( $plugins_subdir ) ) !== false ) {
if ( substr($subfile, 0, 1) == '.' )
continue;
$plugin_files[] = plugin_basename("$dir/$file/$subfile");
}
@closedir( $plugins_subdir );
}
} else {
if ( plugin_basename("$dir/$file") != $plugin )
$plugin_files[] = plugin_basename("$dir/$file");
}
}
@closedir( $plugins_dir );
}
}
return $plugin_files;
}
/**
* Check the plugins directory and retrieve all plugin files with plugin data.
*
* WordPress only supports plugin files in the base plugins directory
* (wp-content/plugins) and in one directory above the plugins directory
* (wp-content/plugins/my-plugin). The file it looks for has the plugin data and
* must be found in those two locations. It is recommended that do keep your
* plugin files in directories.
*
* The file with the plugin data is the file that will be included and therefore
* needs to have the main execution for the plugin. This does not mean
* everything must be contained in the file and it is recommended that the file
* be split for maintainability. Keep everything in one file for extreme
* optimization purposes.
*
* @since unknown
*
* @param string $plugin_folder Optional. Relative path to single plugin folder.
* @return array Key is the plugin file path and the value is an array of the plugin data.
*/
function get_plugins($plugin_folder = '') {
if ( ! $cache_plugins = wp_cache_get('plugins', 'plugins') )
$cache_plugins = array();
if ( isset($cache_plugins[ $plugin_folder ]) )
return $cache_plugins[ $plugin_folder ];
$wp_plugins = array ();
$plugin_root = WP_PLUGIN_DIR;
if( !empty($plugin_folder) )
$plugin_root .= $plugin_folder;
// Files in wp-content/plugins directory
$plugins_dir = @ opendir( $plugin_root);
$plugin_files = array();
if ( $plugins_dir ) {
while (($file = readdir( $plugins_dir ) ) !== false ) {
if ( substr($file, 0, 1) == '.' )
continue;
if ( is_dir( $plugin_root.'/'.$file ) ) {
$plugins_subdir = @ opendir( $plugin_root.'/'.$file );
if ( $plugins_subdir ) {
while (($subfile = readdir( $plugins_subdir ) ) !== false ) {
if ( substr($subfile, 0, 1) == '.' )
continue;
if ( substr($subfile, -4) == '.php' )
$plugin_files[] = "$file/$subfile";
}
}
} else {
if ( substr($file, -4) == '.php' )
$plugin_files[] = $file;
}
}
}
@closedir( $plugins_dir );
@closedir( $plugins_subdir );
if ( !$plugins_dir || empty($plugin_files) )
return $wp_plugins;
foreach ( $plugin_files as $plugin_file ) {
if ( !is_readable( "$plugin_root/$plugin_file" ) )
continue;
$plugin_data = get_plugin_data( "$plugin_root/$plugin_file", false, false ); //Do not apply markup/translate as it'll be cached.
if ( empty ( $plugin_data['Name'] ) )
continue;
$wp_plugins[plugin_basename( $plugin_file )] = $plugin_data;
}
uasort( $wp_plugins, create_function( '$a, $b', 'return strnatcasecmp( $a["Name"], $b["Name"] );' ));
$cache_plugins[ $plugin_folder ] = $wp_plugins;
wp_cache_set('plugins', $cache_plugins, 'plugins');
return $wp_plugins;
}
/**
* Check whether the plugin is active by checking the active_plugins list.
*
* @since 2.5.0
*
* @param string $plugin Base plugin path from plugins directory.
* @return bool True, if in the active plugins list. False, not in the list.
*/
function is_plugin_active($plugin) {
return in_array( $plugin, apply_filters( 'active_plugins', get_option( 'active_plugins' ) ) );
}
/**
* Attempts activation of plugin in a "sandbox" and redirects on success.
*
* A plugin that is already activated will not attempt to be activated again.
*
* The way it works is by setting the redirection to the error before trying to
* include the plugin file. If the plugin fails, then the redirection will not
* be overwritten with the success message. Also, the options will not be
* updated and the activation hook will not be called on plugin error.
*
* It should be noted that in no way the below code will actually prevent errors
* within the file. The code should not be used elsewhere to replicate the
* "sandbox", which uses redirection to work.
* {@source 13 1}
*
* If any errors are found or text is outputted, then it will be captured to
* ensure that the success redirection will update the error redirection.
*
* @since unknown
*
* @param string $plugin Plugin path to main plugin file with plugin data.
* @param string $redirect Optional. URL to redirect to.
* @return WP_Error|null WP_Error on invalid file or null on success.
*/
function activate_plugin($plugin, $redirect = '') {
$current = get_option('active_plugins');
$plugin = plugin_basename(trim($plugin));
$valid = validate_plugin($plugin);
if ( is_wp_error($valid) )
return $valid;
if ( !in_array($plugin, $current) ) {
if ( !empty($redirect) )
wp_redirect(add_query_arg('_error_nonce', wp_create_nonce('plugin-activation-error_' . $plugin), $redirect)); // we'll override this later if the plugin can be included without fatal error
ob_start();
@include(WP_PLUGIN_DIR . '/' . $plugin);
$current[] = $plugin;
sort($current);
do_action( 'activate_plugin', trim( $plugin) );
update_option('active_plugins', $current);
do_action( 'activate_' . trim( $plugin ) );
do_action( 'activated_plugin', trim( $plugin) );
ob_end_clean();
}
return null;
}
/**
* Deactivate a single plugin or multiple plugins.
*
* The deactivation hook is disabled by the plugin upgrader by using the $silent
* parameter.
*
* @since unknown
*
* @param string|array $plugins Single plugin or list of plugins to deactivate.
* @param bool $silent Optional, default is false. Prevent calling deactivate hook.
*/
function deactivate_plugins($plugins, $silent= false) {
$current = get_option('active_plugins');
if ( !is_array($plugins) )
$plugins = array($plugins);
foreach ( $plugins as $plugin ) {
$plugin = plugin_basename($plugin);
if( ! is_plugin_active($plugin) )
continue;
if ( ! $silent )
do_action( 'deactivate_plugin', trim( $plugin ) );
$key = array_search( $plugin, (array) $current );
if ( false !== $key )
array_splice( $current, $key, 1 );
//Used by Plugin updater to internally deactivate plugin, however, not to notify plugins of the fact to prevent plugin output.
if ( ! $silent ) {
do_action( 'deactivate_' . trim( $plugin ) );
do_action( 'deactivated_plugin', trim( $plugin ) );
}
}
update_option('active_plugins', $current);
}
/**
* Activate multiple plugins.
*
* When WP_Error is returned, it does not mean that one of the plugins had
* errors. It means that one or more of the plugins file path was invalid.
*
* The execution will be halted as soon as one of the plugins has an error.
*
* @since unknown
*
* @param string|array $plugins
* @param string $redirect Redirect to page after successful activation.
* @return bool|WP_Error True when finished or WP_Error if there were errors during a plugin activation.
*/
function activate_plugins($plugins, $redirect = '') {
if ( !is_array($plugins) )
$plugins = array($plugins);
$errors = array();
foreach ( (array) $plugins as $plugin ) {
if ( !empty($redirect) )
$redirect = add_query_arg('plugin', $plugin, $redirect);
$result = activate_plugin($plugin, $redirect);
if ( is_wp_error($result) )
$errors[$plugin] = $result;
}
if ( !empty($errors) )
return new WP_Error('plugins_invalid', __('One of the plugins is invalid.'), $errors);
return true;
}
/**
* Remove directory and files of a plugin for a single or list of plugin(s).
*
* If the plugins parameter list is empty, false will be returned. True when
* completed.
*
* @since unknown
*
* @param array $plugins List of plugin
* @param string $redirect Redirect to page when complete.
* @return mixed
*/
function delete_plugins($plugins, $redirect = '' ) {
global $wp_filesystem;
if( empty($plugins) )
return false;
$checked = array();
foreach( $plugins as $plugin )
$checked[] = 'checked[]=' . $plugin;
ob_start();
$url = wp_nonce_url('plugins.php?action=delete-selected&verify-delete=1&' . implode('&', $checked), 'bulk-manage-plugins');
if ( false === ($credentials = request_filesystem_credentials($url)) ) {
$data = ob_get_contents();
ob_end_clean();
if( ! empty($data) ){
include_once( ABSPATH . 'wp-admin/admin-header.php');
echo $data;
include( ABSPATH . 'wp-admin/admin-footer.php');
exit;
}
return;
}
if ( ! WP_Filesystem($credentials) ) {
request_filesystem_credentials($url, '', true); //Failed to connect, Error and request again
$data = ob_get_contents();
ob_end_clean();
if( ! empty($data) ){
include_once( ABSPATH . 'wp-admin/admin-header.php');
echo $data;
include( ABSPATH . 'wp-admin/admin-footer.php');
exit;
}
return;
}
if ( ! is_object($wp_filesystem) )
return new WP_Error('fs_unavailable', __('Could not access filesystem.'));
if ( is_wp_error($wp_filesystem->errors) && $wp_filesystem->errors->get_error_code() )
return new WP_Error('fs_error', __('Filesystem error'), $wp_filesystem->errors);
//Get the base plugin folder
$plugins_dir = $wp_filesystem->wp_plugins_dir();
if ( empty($plugins_dir) )
return new WP_Error('fs_no_plugins_dir', __('Unable to locate WordPress Plugin directory.'));
$plugins_dir = trailingslashit( $plugins_dir );
$errors = array();
foreach( $plugins as $plugin_file ) {
// Run Uninstall hook
if ( is_uninstallable_plugin( $plugin_file ) )
uninstall_plugin($plugin_file);
$this_plugin_dir = trailingslashit( dirname($plugins_dir . $plugin_file) );
// If plugin is in its own directory, recursively delete the directory.
if ( strpos($plugin_file, '/') && $this_plugin_dir != $plugins_dir ) //base check on if plugin includes directory seperator AND that its not the root plugin folder
$deleted = $wp_filesystem->delete($this_plugin_dir, true);
else
$deleted = $wp_filesystem->delete($plugins_dir . $plugin_file);
if ( ! $deleted )
$errors[] = $plugin_file;
}
if ( ! empty($errors) )
return new WP_Error('could_not_remove_plugin', sprintf(__('Could not fully remove the plugin(s) %s'), implode(', ', $errors)) );
// Force refresh of plugin update information
if ( $current = get_transient('update_plugins') ) {
unset( $current->response[ $plugin_file ] );
set_transient('update_plugins', $current);
}
return true;
}
function validate_active_plugins() {
$check_plugins = apply_filters( 'active_plugins', get_option('active_plugins') );
// Sanity check. If the active plugin list is not an array, make it an
// empty array.
if ( !is_array($check_plugins) ) {
update_option('active_plugins', array());
return;
}
//Invalid is any plugin that is deactivated due to error.
$invalid = array();
// If a plugin file does not exist, remove it from the list of active
// plugins.
foreach ( $check_plugins as $check_plugin ) {
$result = validate_plugin($check_plugin);
if ( is_wp_error( $result ) ) {
$invalid[$check_plugin] = $result;
deactivate_plugins( $check_plugin, true);
}
}
return $invalid;
}
/**
* Validate the plugin path.
*
* Checks that the file exists and {@link validate_file() is valid file}.
*
* @since unknown
*
* @param string $plugin Plugin Path
* @return WP_Error|int 0 on success, WP_Error on failure.
*/
function validate_plugin($plugin) {
if ( validate_file($plugin) )
return new WP_Error('plugin_invalid', __('Invalid plugin path.'));
if ( ! file_exists(WP_PLUGIN_DIR . '/' . $plugin) )
return new WP_Error('plugin_not_found', __('Plugin file does not exist.'));
$installed_plugins = get_plugins();
if ( ! isset($installed_plugins[$plugin]) )
return new WP_Error('no_plugin_header', __('The plugin does not have a valid header.'));
return 0;
}
/**
* Whether the plugin can be uninstalled.
*
* @since 2.7.0
*
* @param string $plugin Plugin path to check.
* @return bool Whether plugin can be uninstalled.
*/
function is_uninstallable_plugin($plugin) {
$file = plugin_basename($plugin);
$uninstallable_plugins = (array) get_option('uninstall_plugins');
if ( isset( $uninstallable_plugins[$file] ) || file_exists( WP_PLUGIN_DIR . '/' . dirname($file) . '/uninstall.php' ) )
return true;
return false;
}
/**
* Uninstall a single plugin.
*
* Calls the uninstall hook, if it is available.
*
* @since 2.7.0
*
* @param string $plugin Relative plugin path from Plugin Directory.
*/
function uninstall_plugin($plugin) {
$file = plugin_basename($plugin);
$uninstallable_plugins = (array) get_option('uninstall_plugins');
if ( file_exists( WP_PLUGIN_DIR . '/' . dirname($file) . '/uninstall.php' ) ) {
if ( isset( $uninstallable_plugins[$file] ) ) {
unset($uninstallable_plugins[$file]);
update_option('uninstall_plugins', $uninstallable_plugins);
}
unset($uninstallable_plugins);
define('WP_UNINSTALL_PLUGIN', $file);
include WP_PLUGIN_DIR . '/' . dirname($file) . '/uninstall.php';
return true;
}
if ( isset( $uninstallable_plugins[$file] ) ) {
$callable = $uninstallable_plugins[$file];
unset($uninstallable_plugins[$file]);
update_option('uninstall_plugins', $uninstallable_plugins);
unset($uninstallable_plugins);
include WP_PLUGIN_DIR . '/' . $file;
add_action( 'uninstall_' . $file, $callable );
do_action( 'uninstall_' . $file );
}
}
//
// Menu
//
function add_menu_page( $page_title, $menu_title, $access_level, $file, $function = '', $icon_url = '', $position = NULL ) {
global $menu, $admin_page_hooks, $_registered_pages;
$file = plugin_basename( $file );
$admin_page_hooks[$file] = sanitize_title( $menu_title );
$hookname = get_plugin_page_hookname( $file, '' );
if (!empty ( $function ) && !empty ( $hookname ) && current_user_can( $access_level ) )
add_action( $hookname, $function );
if ( empty($icon_url) ) {
$icon_url = 'images/generic.png';
} elseif ( is_ssl() && 0 === strpos($icon_url, 'http://') ) {
$icon_url = 'https://' . substr($icon_url, 7);
}
$new_menu = array ( $menu_title, $access_level, $file, $page_title, 'menu-top ' . $hookname, $hookname, $icon_url );
if ( NULL === $position ) {
$menu[] = $new_menu;
} else {
$menu[$position] = $new_menu;
}
$_registered_pages[$hookname] = true;
return $hookname;
}
function add_object_page( $page_title, $menu_title, $access_level, $file, $function = '', $icon_url = '') {
global $_wp_last_object_menu;
$_wp_last_object_menu++;
return add_menu_page($page_title, $menu_title, $access_level, $file, $function, $icon_url, $_wp_last_object_menu);
}
function add_utility_page( $page_title, $menu_title, $access_level, $file, $function = '', $icon_url = '') {
global $_wp_last_utility_menu;
$_wp_last_utility_menu++;
return add_menu_page($page_title, $menu_title, $access_level, $file, $function, $icon_url, $_wp_last_utility_menu);
}
function add_submenu_page( $parent, $page_title, $menu_title, $access_level, $file, $function = '' ) {
global $submenu;
global $menu;
global $_wp_real_parent_file;
global $_wp_submenu_nopriv;
global $_registered_pages;
$file = plugin_basename( $file );
$parent = plugin_basename( $parent);
if ( isset( $_wp_real_parent_file[$parent] ) )
$parent = $_wp_real_parent_file[$parent];
if ( !current_user_can( $access_level ) ) {
$_wp_submenu_nopriv[$parent][$file] = true;
return false;
}
// If the parent doesn't already have a submenu, add a link to the parent
// as the first item in the submenu. If the submenu file is the same as the
// parent file someone is trying to link back to the parent manually. In
// this case, don't automatically add a link back to avoid duplication.
if (!isset( $submenu[$parent] ) && $file != $parent ) {
foreach ( (array)$menu as $parent_menu ) {
if ( $parent_menu[2] == $parent && current_user_can( $parent_menu[1] ) )
$submenu[$parent][] = $parent_menu;
}
}
$submenu[$parent][] = array ( $menu_title, $access_level, $file, $page_title );
$hookname = get_plugin_page_hookname( $file, $parent);
if (!empty ( $function ) && !empty ( $hookname ))
add_action( $hookname, $function );
$_registered_pages[$hookname] = true;
// backwards-compatibility for plugins using add_management page. See wp-admin/admin.php for redirect from edit.php to tools.php
if ( 'tools.php' == $parent )
$_registered_pages[get_plugin_page_hookname( $file, 'edit.php')] = true;
return $hookname;
}
/**
* Add sub menu page to the tools main menu.
*
* @param string $page_title
* @param unknown_type $menu_title
* @param unknown_type $access_level
* @param unknown_type $file
* @param unknown_type $function
* @return unknown
*/
function add_management_page( $page_title, $menu_title, $access_level, $file, $function = '' ) {
return add_submenu_page( 'tools.php', $page_title, $menu_title, $access_level, $file, $function );
}
function add_options_page( $page_title, $menu_title, $access_level, $file, $function = '' ) {
return add_submenu_page( 'options-general.php', $page_title, $menu_title, $access_level, $file, $function );
}
function add_theme_page( $page_title, $menu_title, $access_level, $file, $function = '' ) {
return add_submenu_page( 'themes.php', $page_title, $menu_title, $access_level, $file, $function );
}
function add_users_page( $page_title, $menu_title, $access_level, $file, $function = '' ) {
if ( current_user_can('edit_users') )
$parent = 'users.php';
else
$parent = 'profile.php';
return add_submenu_page( $parent, $page_title, $menu_title, $access_level, $file, $function );
}
function add_dashboard_page( $page_title, $menu_title, $access_level, $file, $function = '' ) {
return add_submenu_page( 'index.php', $page_title, $menu_title, $access_level, $file, $function );
}
function add_posts_page( $page_title, $menu_title, $access_level, $file, $function = '' ) {
return add_submenu_page( 'edit.php', $page_title, $menu_title, $access_level, $file, $function );
}
function add_media_page( $page_title, $menu_title, $access_level, $file, $function = '' ) {
return add_submenu_page( 'upload.php', $page_title, $menu_title, $access_level, $file, $function );
}
function add_links_page( $page_title, $menu_title, $access_level, $file, $function = '' ) {
return add_submenu_page( 'link-manager.php', $page_title, $menu_title, $access_level, $file, $function );
}
function add_pages_page( $page_title, $menu_title, $access_level, $file, $function = '' ) {
return add_submenu_page( 'edit-pages.php', $page_title, $menu_title, $access_level, $file, $function );
}
function add_comments_page( $page_title, $menu_title, $access_level, $file, $function = '' ) {
return add_submenu_page( 'edit-comments.php', $page_title, $menu_title, $access_level, $file, $function );
}
//
// Pluggable Menu Support -- Private
//
function get_admin_page_parent( $parent = '' ) {
global $parent_file;
global $menu;
global $submenu;
global $pagenow;
global $plugin_page;
global $_wp_real_parent_file;
global $_wp_menu_nopriv;
global $_wp_submenu_nopriv;
if ( !empty ( $parent ) && 'admin.php' != $parent ) {
if ( isset( $_wp_real_parent_file[$parent] ) )
$parent = $_wp_real_parent_file[$parent];
return $parent;
}
/*
if ( !empty ( $parent_file ) ) {
if ( isset( $_wp_real_parent_file[$parent_file] ) )
$parent_file = $_wp_real_parent_file[$parent_file];
return $parent_file;
}
*/
if ( $pagenow == 'admin.php' && isset( $plugin_page ) ) {
foreach ( (array)$menu as $parent_menu ) {
if ( $parent_menu[2] == $plugin_page ) {
$parent_file = $plugin_page;
if ( isset( $_wp_real_parent_file[$parent_file] ) )
$parent_file = $_wp_real_parent_file[$parent_file];
return $parent_file;
}
}
if ( isset( $_wp_menu_nopriv[$plugin_page] ) ) {
$parent_file = $plugin_page;
if ( isset( $_wp_real_parent_file[$parent_file] ) )
$parent_file = $_wp_real_parent_file[$parent_file];
return $parent_file;
}
}
if ( isset( $plugin_page ) && isset( $_wp_submenu_nopriv[$pagenow][$plugin_page] ) ) {
$parent_file = $pagenow;
if ( isset( $_wp_real_parent_file[$parent_file] ) )
$parent_file = $_wp_real_parent_file[$parent_file];
return $parent_file;
}
foreach (array_keys( (array)$submenu ) as $parent) {
foreach ( $submenu[$parent] as $submenu_array ) {
if ( isset( $_wp_real_parent_file[$parent] ) )
$parent = $_wp_real_parent_file[$parent];
if ( $submenu_array[2] == $pagenow ) {
$parent_file = $parent;
return $parent;
} else
if ( isset( $plugin_page ) && ($plugin_page == $submenu_array[2] ) ) {
$parent_file = $parent;
return $parent;
}
}
}
if ( empty($parent_file) )
$parent_file = '';
return '';
}
function get_admin_page_title() {
global $title;
global $menu;
global $submenu;
global $pagenow;
global $plugin_page;
if ( isset( $title ) && !empty ( $title ) ) {
return $title;
}
$hook = get_plugin_page_hook( $plugin_page, $pagenow );
$parent = $parent1 = get_admin_page_parent();
if ( empty ( $parent) ) {
foreach ( (array)$menu as $menu_array ) {
if ( isset( $menu_array[3] ) ) {
if ( $menu_array[2] == $pagenow ) {
$title = $menu_array[3];
return $menu_array[3];
} else
if ( isset( $plugin_page ) && ($plugin_page == $menu_array[2] ) && ($hook == $menu_array[3] ) ) {
$title = $menu_array[3];
return $menu_array[3];
}
} else {
$title = $menu_array[0];
return $title;
}
}
} else {
foreach (array_keys( $submenu ) as $parent) {
foreach ( $submenu[$parent] as $submenu_array ) {
if ( isset( $plugin_page ) &&
($plugin_page == $submenu_array[2] ) &&
(($parent == $pagenow ) || ($parent == $plugin_page ) || ($plugin_page == $hook ) || (($pagenow == 'admin.php' ) && ($parent1 != $submenu_array[2] ) ) )
) {
$title = $submenu_array[3];
return $submenu_array[3];
}
if ( $submenu_array[2] != $pagenow || isset( $_GET['page'] ) ) // not the current page
continue;
if ( isset( $submenu_array[3] ) ) {
$title = $submenu_array[3];
return $submenu_array[3];
} else {
$title = $submenu_array[0];
return $title;
}
}
}
if ( !isset($title) || empty ( $title ) ) {
foreach ( $menu as $menu_array ) {
if ( isset( $plugin_page ) &&
($plugin_page == $menu_array[2] ) &&
($pagenow == 'admin.php' ) &&
($parent1 == $menu_array[2] ) )
{
$title = $menu_array[3];
return $menu_array[3];
}
}
}
}
return $title;
}
function get_plugin_page_hook( $plugin_page, $parent_page ) {
$hook = get_plugin_page_hookname( $plugin_page, $parent_page );
if ( has_action($hook) )
return $hook;
else
return null;
}
function get_plugin_page_hookname( $plugin_page, $parent_page ) {
global $admin_page_hooks;
$parent = get_admin_page_parent( $parent_page );
$page_type = 'admin';
if ( empty ( $parent_page ) || 'admin.php' == $parent_page || isset( $admin_page_hooks[$plugin_page] ) ) {
if ( isset( $admin_page_hooks[$plugin_page] ) )
$page_type = 'toplevel';
else
if ( isset( $admin_page_hooks[$parent] ))
$page_type = $admin_page_hooks[$parent];
} else if ( isset( $admin_page_hooks[$parent] ) ) {
$page_type = $admin_page_hooks[$parent];
}
$plugin_name = preg_replace( '!\.php!', '', $plugin_page );
return $page_type.'_page_'.$plugin_name;
}
function user_can_access_admin_page() {
global $pagenow;
global $menu;
global $submenu;
global $_wp_menu_nopriv;
global $_wp_submenu_nopriv;
global $plugin_page;
global $_registered_pages;
$parent = get_admin_page_parent();
if ( !isset( $plugin_page ) && isset( $_wp_submenu_nopriv[$parent][$pagenow] ) )
return false;
if ( isset( $plugin_page ) ) {
if ( isset( $_wp_submenu_nopriv[$parent][$plugin_page] ) )
return false;
$hookname = get_plugin_page_hookname($plugin_page, $parent);
if ( !isset($_registered_pages[$hookname]) )
return false;
}
if ( empty( $parent) ) {
if ( isset( $_wp_menu_nopriv[$pagenow] ) )
return false;
if ( isset( $_wp_submenu_nopriv[$pagenow][$pagenow] ) )
return false;
if ( isset( $plugin_page ) && isset( $_wp_submenu_nopriv[$pagenow][$plugin_page] ) )
return false;
if ( isset( $plugin_page ) && isset( $_wp_menu_nopriv[$plugin_page] ) )
return false;
foreach (array_keys( $_wp_submenu_nopriv ) as $key ) {
if ( isset( $_wp_submenu_nopriv[$key][$pagenow] ) )
return false;
if ( isset( $plugin_page ) && isset( $_wp_submenu_nopriv[$key][$plugin_page] ) )
return false;
}
return true;
}
if ( isset( $plugin_page ) && ( $plugin_page == $parent ) && isset( $_wp_menu_nopriv[$plugin_page] ) )
return false;
if ( isset( $submenu[$parent] ) ) {
foreach ( $submenu[$parent] as $submenu_array ) {
if ( isset( $plugin_page ) && ( $submenu_array[2] == $plugin_page ) ) {
if ( current_user_can( $submenu_array[1] ))
return true;
else
return false;
} else if ( $submenu_array[2] == $pagenow ) {
if ( current_user_can( $submenu_array[1] ))
return true;
else
return false;
}
}
}
foreach ( $menu as $menu_array ) {
if ( $menu_array[2] == $parent) {
if ( current_user_can( $menu_array[1] ))
return true;
else
return false;
}
}
return true;
}
/* Whitelist functions */
/**
* Register a setting and its sanitization callback
*
* @since 2.7.0
*
* @param string $option_group A settings group name. Should correspond to a whitelisted option key name.
* Default whitelisted option key names include "general," "discussion," and "reading," among others.
* @param string $option_name The name of an option to sanitize and save.
* @param unknown_type $sanitize_callback A callback function that sanitizes the option's value.
* @return unknown
*/
function register_setting($option_group, $option_name, $sanitize_callback = '') {
return add_option_update_handler($option_group, $option_name, $sanitize_callback);
}
/**
* Unregister a setting
*
* @since 2.7.0
*
* @param unknown_type $option_group
* @param unknown_type $option_name
* @param unknown_type $sanitize_callback
* @return unknown
*/
function unregister_setting($option_group, $option_name, $sanitize_callback = '') {
return remove_option_update_handler($option_group, $option_name, $sanitize_callback);
}
/**
* {@internal Missing Short Description}}
*
* @since unknown
*
* @param unknown_type $option_group
* @param unknown_type $option_name
* @param unknown_type $sanitize_callback
*/
function add_option_update_handler($option_group, $option_name, $sanitize_callback = '') {
global $new_whitelist_options;
$new_whitelist_options[ $option_group ][] = $option_name;
if ( $sanitize_callback != '' )
add_filter( "sanitize_option_{$option_name}", $sanitize_callback );
}
/**
* {@internal Missing Short Description}}
*
* @since unknown
*
* @param unknown_type $option_group
* @param unknown_type $option_name
* @param unknown_type $sanitize_callback
*/
function remove_option_update_handler($option_group, $option_name, $sanitize_callback = '') {
global $new_whitelist_options;
$pos = array_search( $option_name, (array) $new_whitelist_options );
if ( $pos !== false )
unset( $new_whitelist_options[ $option_group ][ $pos ] );
if ( $sanitize_callback != '' )
remove_filter( "sanitize_option_{$option_name}", $sanitize_callback );
}
/**
* {@internal Missing Short Description}}
*
* @since unknown
*
* @param unknown_type $options
* @return unknown
*/
function option_update_filter( $options ) {
global $new_whitelist_options;
if ( is_array( $new_whitelist_options ) )
$options = add_option_whitelist( $new_whitelist_options, $options );
return $options;
}
add_filter( 'whitelist_options', 'option_update_filter' );
/**
* {@internal Missing Short Description}}
*
* @since unknown
*
* @param unknown_type $new_options
* @param unknown_type $options
* @return unknown
*/
function add_option_whitelist( $new_options, $options = '' ) {
if( $options == '' ) {
global $whitelist_options;
} else {
$whitelist_options = $options;
}
foreach( $new_options as $page => $keys ) {
foreach( $keys as $key ) {
if ( !isset($whitelist_options[ $page ]) || !is_array($whitelist_options[ $page ]) ) {
$whitelist_options[ $page ] = array();
$whitelist_options[ $page ][] = $key;
} else {
$pos = array_search( $key, $whitelist_options[ $page ] );
if ( $pos === false )
$whitelist_options[ $page ][] = $key;
}
}
}
return $whitelist_options;
}
/**
* {@internal Missing Short Description}}
*
* @since unknown
*
* @param unknown_type $del_options
* @param unknown_type $options
* @return unknown
*/
function remove_option_whitelist( $del_options, $options = '' ) {
if( $options == '' ) {
global $whitelist_options;
} else {
$whitelist_options = $options;
}
foreach( $del_options as $page => $keys ) {
foreach( $keys as $key ) {
if ( isset($whitelist_options[ $page ]) && is_array($whitelist_options[ $page ]) ) {
$pos = array_search( $key, $whitelist_options[ $page ] );
if( $pos !== false )
unset( $whitelist_options[ $page ][ $pos ] );
}
}
}
return $whitelist_options;
}
/**
* Output nonce, action, and option_page fields for a settings page.
*
* @since 2.7.0
*
* @param string $option_group A settings group name. This should match the group name used in register_setting().
*/
function settings_fields($option_group) {
echo "<input type='hidden' name='option_page' value='" . esc_attr($option_group) . "' />";
echo '<input type="hidden" name="action" value="update" />';
wp_nonce_field("$option_group-options");
}
?>