--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-admin/includes/plugin.php Wed Nov 06 03:21:17 2013 +0000
@@ -0,0 +1,1851 @@
+<?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.
+ * Network: Optional. Specify "Network: true" to require that a plugin is activated
+ * across all sites in an installation. This will prevent a plugin from being
+ * activated on a single site when Multisite is enabled.
+ * * / # 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.
+ * 'Network' - Boolean. Whether the plugin can only be activated network wide.
+ *
+ * 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 Optional. If the returned data should have HTML markup applied. Defaults to true.
+ * @param bool $translate Optional. If the returned data should be translated. Defaults to true.
+ * @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',
+ 'Network' => 'Network',
+ // Site Wide Only is deprecated in favor of Network.
+ '_sitewide' => 'Site Wide Only',
+ );
+
+ $plugin_data = get_file_data( $plugin_file, $default_headers, 'plugin' );
+
+ // Site Wide Only is the old header for Network
+ if ( ! $plugin_data['Network'] && $plugin_data['_sitewide'] ) {
+ _deprecated_argument( __FUNCTION__, '3.0', sprintf( __( 'The <code>%1$s</code> plugin header is deprecated. Use <code>%2$s</code> instead.' ), 'Site Wide Only: true', 'Network: true' ) );
+ $plugin_data['Network'] = $plugin_data['_sitewide'];
+ }
+ $plugin_data['Network'] = ( 'true' == strtolower( $plugin_data['Network'] ) );
+ unset( $plugin_data['_sitewide'] );
+
+ if ( $markup || $translate ) {
+ $plugin_data = _get_plugin_data_markup_translate( $plugin_file, $plugin_data, $markup, $translate );
+ } else {
+ $plugin_data['Title'] = $plugin_data['Name'];
+ $plugin_data['AuthorName'] = $plugin_data['Author'];
+ }
+
+ return $plugin_data;
+}
+
+/**
+ * Sanitizes plugin data, optionally adds markup, optionally translates.
+ *
+ * @since 2.7.0
+ * @access private
+ * @see get_plugin_data()
+ */
+function _get_plugin_data_markup_translate( $plugin_file, $plugin_data, $markup = true, $translate = true ) {
+
+ // Sanitize the plugin filename to a WP_PLUGIN_DIR relative path
+ $plugin_file = plugin_basename( $plugin_file );
+
+ // Translate fields
+ if ( $translate ) {
+ if ( $textdomain = $plugin_data['TextDomain'] ) {
+ if ( $plugin_data['DomainPath'] )
+ load_plugin_textdomain( $textdomain, false, dirname( $plugin_file ) . $plugin_data['DomainPath'] );
+ else
+ load_plugin_textdomain( $textdomain, false, dirname( $plugin_file ) );
+ } elseif ( in_array( basename( $plugin_file ), array( 'hello.php', 'akismet.php' ) ) ) {
+ $textdomain = 'default';
+ }
+ if ( $textdomain ) {
+ foreach ( array( 'Name', 'PluginURI', 'Description', 'Author', 'AuthorURI', 'Version' ) as $field )
+ $plugin_data[ $field ] = translate( $plugin_data[ $field ], $textdomain );
+ }
+ }
+
+ // Sanitize fields
+ $allowed_tags = $allowed_tags_in_links = array(
+ 'abbr' => array( 'title' => true ),
+ 'acronym' => array( 'title' => true ),
+ 'code' => true,
+ 'em' => true,
+ 'strong' => true,
+ );
+ $allowed_tags['a'] = array( 'href' => true, 'title' => true );
+
+ // Name is marked up inside <a> tags. Don't allow these.
+ // Author is too, but some plugins have used <a> here (omitting Author URI).
+ $plugin_data['Name'] = wp_kses( $plugin_data['Name'], $allowed_tags_in_links );
+ $plugin_data['Author'] = wp_kses( $plugin_data['Author'], $allowed_tags );
+
+ $plugin_data['Description'] = wp_kses( $plugin_data['Description'], $allowed_tags );
+ $plugin_data['Version'] = wp_kses( $plugin_data['Version'], $allowed_tags );
+
+ $plugin_data['PluginURI'] = esc_url( $plugin_data['PluginURI'] );
+ $plugin_data['AuthorURI'] = esc_url( $plugin_data['AuthorURI'] );
+
+ $plugin_data['Title'] = $plugin_data['Name'];
+ $plugin_data['AuthorName'] = $plugin_data['Author'];
+
+ // Apply markup
+ if ( $markup ) {
+ if ( $plugin_data['PluginURI'] && $plugin_data['Name'] )
+ $plugin_data['Title'] = '<a href="' . $plugin_data['PluginURI'] . '" title="' . esc_attr__( 'Visit plugin homepage' ) . '">' . $plugin_data['Name'] . '</a>';
+
+ if ( $plugin_data['AuthorURI'] && $plugin_data['Author'] )
+ $plugin_data['Author'] = '<a href="' . $plugin_data['AuthorURI'] . '" title="' . esc_attr__( 'Visit author homepage' ) . '">' . $plugin_data['Author'] . '</a>';
+
+ $plugin_data['Description'] = wptexturize( $plugin_data['Description'] );
+
+ if ( $plugin_data['Author'] )
+ $plugin_data['Description'] .= ' <cite>' . sprintf( __('By %s.'), $plugin_data['Author'] ) . '</cite>';
+ }
+
+ 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 1.5.0
+ *
+ * @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";
+ }
+ closedir( $plugins_subdir );
+ }
+ } else {
+ if ( substr($file, -4) == '.php' )
+ $plugin_files[] = $file;
+ }
+ }
+ closedir( $plugins_dir );
+ }
+
+ if ( empty($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, '_sort_uname_callback' );
+
+ $cache_plugins[ $plugin_folder ] = $wp_plugins;
+ wp_cache_set('plugins', $cache_plugins, 'plugins');
+
+ return $wp_plugins;
+}
+
+/**
+ * Check the mu-plugins directory and retrieve all mu-plugin files with any plugin data.
+ *
+ * WordPress only includes mu-plugin files in the base mu-plugins directory (wp-content/mu-plugins).
+ *
+ * @since 3.0.0
+ * @return array Key is the mu-plugin file path and the value is an array of the mu-plugin data.
+ */
+function get_mu_plugins() {
+ $wp_plugins = array();
+ // Files in wp-content/mu-plugins directory
+ $plugin_files = array();
+
+ if ( ! is_dir( WPMU_PLUGIN_DIR ) )
+ return $wp_plugins;
+ if ( $plugins_dir = @ opendir( WPMU_PLUGIN_DIR ) ) {
+ while ( ( $file = readdir( $plugins_dir ) ) !== false ) {
+ if ( substr( $file, -4 ) == '.php' )
+ $plugin_files[] = $file;
+ }
+ } else {
+ return $wp_plugins;
+ }
+
+ @closedir( $plugins_dir );
+
+ if ( empty($plugin_files) )
+ return $wp_plugins;
+
+ foreach ( $plugin_files as $plugin_file ) {
+ if ( !is_readable( WPMU_PLUGIN_DIR . "/$plugin_file" ) )
+ continue;
+
+ $plugin_data = get_plugin_data( WPMU_PLUGIN_DIR . "/$plugin_file", false, false ); //Do not apply markup/translate as it'll be cached.
+
+ if ( empty ( $plugin_data['Name'] ) )
+ $plugin_data['Name'] = $plugin_file;
+
+ $wp_plugins[ $plugin_file ] = $plugin_data;
+ }
+
+ if ( isset( $wp_plugins['index.php'] ) && filesize( WPMU_PLUGIN_DIR . '/index.php') <= 30 ) // silence is golden
+ unset( $wp_plugins['index.php'] );
+
+ uasort( $wp_plugins, '_sort_uname_callback' );
+
+ return $wp_plugins;
+}
+
+/**
+ * Callback to sort array by a 'Name' key.
+ *
+ * @since 3.1.0
+ * @access private
+ */
+function _sort_uname_callback( $a, $b ) {
+ return strnatcasecmp( $a['Name'], $b['Name'] );
+}
+
+/**
+ * Check the wp-content directory and retrieve all drop-ins with any plugin data.
+ *
+ * @since 3.0.0
+ * @return array Key is the file path and the value is an array of the plugin data.
+ */
+function get_dropins() {
+ $dropins = array();
+ $plugin_files = array();
+
+ $_dropins = _get_dropins();
+
+ // These exist in the wp-content directory
+ if ( $plugins_dir = @ opendir( WP_CONTENT_DIR ) ) {
+ while ( ( $file = readdir( $plugins_dir ) ) !== false ) {
+ if ( isset( $_dropins[ $file ] ) )
+ $plugin_files[] = $file;
+ }
+ } else {
+ return $dropins;
+ }
+
+ @closedir( $plugins_dir );
+
+ if ( empty($plugin_files) )
+ return $dropins;
+
+ foreach ( $plugin_files as $plugin_file ) {
+ if ( !is_readable( WP_CONTENT_DIR . "/$plugin_file" ) )
+ continue;
+ $plugin_data = get_plugin_data( WP_CONTENT_DIR . "/$plugin_file", false, false ); //Do not apply markup/translate as it'll be cached.
+ if ( empty( $plugin_data['Name'] ) )
+ $plugin_data['Name'] = $plugin_file;
+ $dropins[ $plugin_file ] = $plugin_data;
+ }
+
+ uksort( $dropins, 'strnatcasecmp' );
+
+ return $dropins;
+}
+
+/**
+ * Returns drop-ins that WordPress uses.
+ *
+ * Includes Multisite drop-ins only when is_multisite()
+ *
+ * @since 3.0.0
+ * @return array Key is file name. The value is an array, with the first value the
+ * purpose of the drop-in and the second value the name of the constant that must be
+ * true for the drop-in to be used, or true if no constant is required.
+ */
+function _get_dropins() {
+ $dropins = array(
+ 'advanced-cache.php' => array( __( 'Advanced caching plugin.' ), 'WP_CACHE' ), // WP_CACHE
+ 'db.php' => array( __( 'Custom database class.' ), true ), // auto on load
+ 'db-error.php' => array( __( 'Custom database error message.' ), true ), // auto on error
+ 'install.php' => array( __( 'Custom install script.' ), true ), // auto on install
+ 'maintenance.php' => array( __( 'Custom maintenance message.' ), true ), // auto on maintenance
+ 'object-cache.php' => array( __( 'External object cache.' ), true ), // auto on load
+ );
+
+ if ( is_multisite() ) {
+ $dropins['sunrise.php' ] = array( __( 'Executed before Multisite is loaded.' ), 'SUNRISE' ); // SUNRISE
+ $dropins['blog-deleted.php' ] = array( __( 'Custom site deleted message.' ), true ); // auto on deleted blog
+ $dropins['blog-inactive.php' ] = array( __( 'Custom site inactive message.' ), true ); // auto on inactive blog
+ $dropins['blog-suspended.php'] = array( __( 'Custom site suspended message.' ), true ); // auto on archived or spammed blog
+ }
+
+ return $dropins;
+}
+
+/**
+ * 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, (array) get_option( 'active_plugins', array() ) ) || is_plugin_active_for_network( $plugin );
+}
+
+/**
+ * Check whether the plugin is inactive.
+ *
+ * Reverse of is_plugin_active(). Used as a callback.
+ *
+ * @since 3.1.0
+ * @see is_plugin_active()
+ *
+ * @param string $plugin Base plugin path from plugins directory.
+ * @return bool True if inactive. False if active.
+ */
+function is_plugin_inactive( $plugin ) {
+ return ! is_plugin_active( $plugin );
+}
+
+/**
+ * Check whether the plugin is active for the entire network.
+ *
+ * @since 3.0.0
+ *
+ * @param string $plugin Base plugin path from plugins directory.
+ * @return bool True, if active for the network, otherwise false.
+ */
+function is_plugin_active_for_network( $plugin ) {
+ if ( !is_multisite() )
+ return false;
+
+ $plugins = get_site_option( 'active_sitewide_plugins');
+ if ( isset($plugins[$plugin]) )
+ return true;
+
+ return false;
+}
+
+/**
+ * Checks for "Network: true" in the plugin header to see if this should
+ * be activated only as a network wide plugin. The plugin would also work
+ * when Multisite is not enabled.
+ *
+ * Checks for "Site Wide Only: true" for backwards compatibility.
+ *
+ * @since 3.0.0
+ *
+ * @param string $plugin Plugin to check
+ * @return bool True if plugin is network only, false otherwise.
+ */
+function is_network_only_plugin( $plugin ) {
+ $plugin_data = get_plugin_data( WP_PLUGIN_DIR . '/' . $plugin );
+ if ( $plugin_data )
+ return $plugin_data['Network'];
+ return false;
+}
+
+/**
+ * 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 2.5.0
+ *
+ * @param string $plugin Plugin path to main plugin file with plugin data.
+ * @param string $redirect Optional. URL to redirect to.
+ * @param bool $network_wide Whether to enable the plugin for all sites in the
+ * network or just the current site. Multisite only. Default is false.
+ * @param bool $silent Prevent calling activation hooks. Optional, default is false.
+ * @return WP_Error|null WP_Error on invalid file or null on success.
+ */
+function activate_plugin( $plugin, $redirect = '', $network_wide = false, $silent = false ) {
+ $plugin = plugin_basename( trim( $plugin ) );
+
+ if ( is_multisite() && ( $network_wide || is_network_only_plugin($plugin) ) ) {
+ $network_wide = true;
+ $current = get_site_option( 'active_sitewide_plugins', array() );
+ $_GET['networkwide'] = 1; // Back compat for plugins looking for this value.
+ } else {
+ $current = get_option( 'active_plugins', array() );
+ }
+
+ $valid = validate_plugin($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_once(WP_PLUGIN_DIR . '/' . $plugin);
+
+ if ( ! $silent ) {
+ /**
+ * Fires before a plugin is activated in activate_plugin() when the $silent parameter is false.
+ *
+ * @since 2.9.0
+ *
+ * @param string $plugin Plugin path to main plugin file with plugin data.
+ * @param bool $network_wide Whether to enable the plugin for all sites in the network
+ * or just the current site. Multisite only. Default is false.
+ */
+ do_action( 'activate_plugin', $plugin, $network_wide );
+
+ /**
+ * Fires before a plugin is activated in activate_plugin() when the $silent parameter is false.
+ *
+ * The action concatenates the 'activate_' prefix with the $plugin value passed to
+ * activate_plugin() to create a dynamically-named action.
+ *
+ * @since 2.0.0
+ *
+ * @param bool $network_wide Whether to enable the plugin for all sites in the network
+ * or just the current site. Multisite only. Default is false.
+ */
+ do_action( 'activate_' . $plugin, $network_wide );
+ }
+
+ if ( $network_wide ) {
+ $current[$plugin] = time();
+ update_site_option( 'active_sitewide_plugins', $current );
+ } else {
+ $current[] = $plugin;
+ sort($current);
+ update_option('active_plugins', $current);
+ }
+
+ if ( ! $silent ) {
+ /**
+ * Fires after a plugin has been activated in activate_plugin() when the $silent parameter is false.
+ *
+ * @since 2.9.0
+ *
+ * @param string $plugin Plugin path to main plugin file with plugin data.
+ * @param bool $network_wide Whether to enable the plugin for all sites in the network
+ * or just the current site. Multisite only. Default is false.
+ */
+ do_action( 'activated_plugin', $plugin, $network_wide );
+ }
+
+ if ( ob_get_length() > 0 ) {
+ $output = ob_get_clean();
+ return new WP_Error('unexpected_output', __('The plugin generated unexpected output.'), $output);
+ }
+ 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 2.5.0
+ *
+ * @param string|array $plugins Single plugin or list of plugins to deactivate.
+ * @param bool $silent Prevent calling deactivation hooks. Default is false.
+ * @param mixed $network_wide Whether to deactivate the plugin for all sites in the network.
+ * A value of null (the default) will deactivate plugins for both the site and the network.
+ */
+function deactivate_plugins( $plugins, $silent = false, $network_wide = null ) {
+ if ( is_multisite() )
+ $network_current = get_site_option( 'active_sitewide_plugins', array() );
+ $current = get_option( 'active_plugins', array() );
+ $do_blog = $do_network = false;
+
+ foreach ( (array) $plugins as $plugin ) {
+ $plugin = plugin_basename( trim( $plugin ) );
+ if ( ! is_plugin_active($plugin) )
+ continue;
+
+ $network_deactivating = false !== $network_wide && is_plugin_active_for_network( $plugin );
+
+ if ( ! $silent )
+ /**
+ * Fires for each plugin being deactivated in deactivate_plugins(), before deactivation
+ * and when the $silent parameter is false.
+ *
+ * @since 2.9.0
+ *
+ * @param string $plugin Plugin path to main plugin file with plugin data.
+ * @param bool $network_deactivating Whether the plugin is deactivated for all sites in the network
+ * or just the current site. Multisite only. Default is false.
+ */
+ do_action( 'deactivate_plugin', $plugin, $network_deactivating );
+
+ if ( false !== $network_wide ) {
+ if ( is_plugin_active_for_network( $plugin ) ) {
+ $do_network = true;
+ unset( $network_current[ $plugin ] );
+ } elseif ( $network_wide ) {
+ continue;
+ }
+ }
+
+ if ( true !== $network_wide ) {
+ $key = array_search( $plugin, $current );
+ if ( false !== $key ) {
+ $do_blog = true;
+ unset( $current[ $key ] );
+ }
+ }
+
+ if ( ! $silent ) {
+ /**
+ * Fires for each plugin being deactivated in deactivate_plugins(), after deactivation
+ * and when the $silent parameter is false.
+ *
+ * The action concatenates the 'deactivate_' prefix with the plugin's basename
+ * to create a dynamically-named action.
+ *
+ * @since 2.0.0
+ *
+ * @param bool $network_deactivating Whether the plugin is deactivated for all sites in the network
+ * or just the current site. Multisite only. Default is false.
+ */
+ do_action( 'deactivate_' . $plugin, $network_deactivating );
+
+ /**
+ * Fires for each plugin being deactivated in deactivate_plugins(), after deactivation
+ * and when the $silent parameter is false.
+ *
+ * @since 2.9.0
+ *
+ * @param string $plugin Plugin path to main plugin file with plugin data.
+ * @param bool $network_deactivating Whether the plugin is deactivated for all sites in the network
+ * or just the current site. Multisite only. Default is false.
+ */
+ do_action( 'deactivated_plugin', $plugin, $network_deactivating );
+ }
+ }
+
+ if ( $do_blog )
+ update_option('active_plugins', $current);
+ if ( $do_network )
+ update_site_option( 'active_sitewide_plugins', $network_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 2.6.0
+ *
+ * @param string|array $plugins
+ * @param string $redirect Redirect to page after successful activation.
+ * @param bool $network_wide Whether to enable the plugin for all sites in the network.
+ * @param bool $silent Prevent calling activation hooks. Default is false.
+ * @return bool|WP_Error True when finished or WP_Error if there were errors during a plugin activation.
+ */
+function activate_plugins( $plugins, $redirect = '', $network_wide = false, $silent = false ) {
+ if ( !is_array($plugins) )
+ $plugins = array($plugins);
+
+ $errors = array();
+ foreach ( $plugins as $plugin ) {
+ if ( !empty($redirect) )
+ $redirect = add_query_arg('plugin', $plugin, $redirect);
+ $result = activate_plugin($plugin, $redirect, $network_wide, $silent);
+ if ( is_wp_error($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 2.6.0
+ *
+ * @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('&', $checked), 'bulk-plugins');
+ if ( false === ($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 separator AND that it's 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_site_transient('update_plugins') ) {
+ unset( $current->response[ $plugin_file ] );
+ set_site_transient('update_plugins', $current);
+ }
+
+ return true;
+}
+
+/**
+ * Validate active plugins
+ *
+ * Validate all active plugins, deactivates invalid and
+ * returns an array of deactivated ones.
+ *
+ * @since 2.5.0
+ * @return array invalid plugins, plugin as key, error as value
+ */
+function validate_active_plugins() {
+ $plugins = get_option( 'active_plugins', array() );
+ // validate vartype: array
+ if ( ! is_array( $plugins ) ) {
+ update_option( 'active_plugins', array() );
+ $plugins = array();
+ }
+
+ if ( is_multisite() && is_super_admin() ) {
+ $network_plugins = (array) get_site_option( 'active_sitewide_plugins', array() );
+ $plugins = array_merge( $plugins, array_keys( $network_plugins ) );
+ }
+
+ if ( empty( $plugins ) )
+ return;
+
+ $invalid = array();
+
+ // invalid plugins get deactivated
+ foreach ( $plugins as $plugin ) {
+ $result = validate_plugin( $plugin );
+ if ( is_wp_error( $result ) ) {
+ $invalid[$plugin] = $result;
+ deactivate_plugins( $plugin, true );
+ }
+ }
+ return $invalid;
+}
+
+/**
+ * Validate the plugin path.
+ *
+ * Checks that the file exists and {@link validate_file() is valid file}.
+ *
+ * @since 2.5.0
+ *
+ * @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 );
+
+ /**
+ * Fires in uninstall_plugin() once the plugin has been uninstalled.
+ *
+ * The action concatenates the 'uninstall_' prefix with the basename of the
+ * plugin passed to {@see uninstall_plugin()} to create a dynamically-named action.
+ *
+ * @since 2.7.0
+ */
+ do_action( 'uninstall_' . $file );
+ }
+}
+
+//
+// Menu
+//
+
+/**
+ * Add a top level menu page
+ *
+ * This function takes a capability which will be used to determine whether
+ * or not a page is included in the menu.
+ *
+ * The function which is hooked in to handle the output of the page must check
+ * that the user has the required capability as well.
+ *
+ * @param string $page_title The text to be displayed in the title tags of the page when the menu is selected
+ * @param string $menu_title The text to be used for the menu
+ * @param string $capability The capability required for this menu to be displayed to the user.
+ * @param string $menu_slug The slug name to refer to this menu by (should be unique for this menu)
+ * @param callback $function The function to be called to output the content for this page.
+ * @param string $icon_url The url to the icon to be used for this menu. Using 'none' would leave div.wp-menu-image empty
+ * so an icon can be added as background with CSS.
+ * @param int $position The position in the menu order this one should appear
+ *
+ * @return string The resulting page's hook_suffix
+ */
+function add_menu_page( $page_title, $menu_title, $capability, $menu_slug, $function = '', $icon_url = '', $position = null ) {
+ global $menu, $admin_page_hooks, $_registered_pages, $_parent_pages;
+
+ $menu_slug = plugin_basename( $menu_slug );
+
+ $admin_page_hooks[$menu_slug] = sanitize_title( $menu_title );
+
+ $hookname = get_plugin_page_hookname( $menu_slug, '' );
+
+ if ( !empty( $function ) && !empty( $hookname ) && current_user_can( $capability ) )
+ add_action( $hookname, $function );
+
+ if ( empty($icon_url) ) {
+ $icon_url = 'none';
+ $icon_class = 'menu-icon-generic ';
+ } else {
+ $icon_url = set_url_scheme( $icon_url );
+ $icon_class = '';
+ }
+
+ $new_menu = array( $menu_title, $capability, $menu_slug, $page_title, 'menu-top ' . $icon_class . $hookname, $hookname, $icon_url );
+
+ if ( null === $position )
+ $menu[] = $new_menu;
+ else
+ $menu[$position] = $new_menu;
+
+ $_registered_pages[$hookname] = true;
+
+ // No parent as top level
+ $_parent_pages[$menu_slug] = false;
+
+ return $hookname;
+}
+
+/**
+ * Add a top level menu page in the 'objects' section
+ *
+ * This function takes a capability which will be used to determine whether
+ * or not a page is included in the menu.
+ *
+ * The function which is hooked in to handle the output of the page must check
+ * that the user has the required capability as well.
+ *
+ * @param string $page_title The text to be displayed in the title tags of the page when the menu is selected
+ * @param string $menu_title The text to be used for the menu
+ * @param string $capability The capability required for this menu to be displayed to the user.
+ * @param string $menu_slug The slug name to refer to this menu by (should be unique for this menu)
+ * @param callback $function The function to be called to output the content for this page.
+ * @param string $icon_url The url to the icon to be used for this menu
+ *
+ * @return string The resulting page's hook_suffix
+ */
+function add_object_page( $page_title, $menu_title, $capability, $menu_slug, $function = '', $icon_url = '') {
+ global $_wp_last_object_menu;
+
+ $_wp_last_object_menu++;
+
+ return add_menu_page($page_title, $menu_title, $capability, $menu_slug, $function, $icon_url, $_wp_last_object_menu);
+}
+
+/**
+ * Add a top level menu page in the 'utility' section
+ *
+ * This function takes a capability which will be used to determine whether
+ * or not a page is included in the menu.
+ *
+ * The function which is hooked in to handle the output of the page must check
+ * that the user has the required capability as well.
+ *
+ * @param string $page_title The text to be displayed in the title tags of the page when the menu is selected
+ * @param string $menu_title The text to be used for the menu
+ * @param string $capability The capability required for this menu to be displayed to the user.
+ * @param string $menu_slug The slug name to refer to this menu by (should be unique for this menu)
+ * @param callback $function The function to be called to output the content for this page.
+ * @param string $icon_url The url to the icon to be used for this menu
+ *
+ * @return string The resulting page's hook_suffix
+ */
+function add_utility_page( $page_title, $menu_title, $capability, $menu_slug, $function = '', $icon_url = '') {
+ global $_wp_last_utility_menu;
+
+ $_wp_last_utility_menu++;
+
+ return add_menu_page($page_title, $menu_title, $capability, $menu_slug, $function, $icon_url, $_wp_last_utility_menu);
+}
+
+/**
+ * Add a sub menu page
+ *
+ * This function takes a capability which will be used to determine whether
+ * or not a page is included in the menu.
+ *
+ * The function which is hooked in to handle the output of the page must check
+ * that the user has the required capability as well.
+ *
+ * @param string $parent_slug The slug name for the parent menu (or the file name of a standard WordPress admin page)
+ * @param string $page_title The text to be displayed in the title tags of the page when the menu is selected
+ * @param string $menu_title The text to be used for the menu
+ * @param string $capability The capability required for this menu to be displayed to the user.
+ * @param string $menu_slug The slug name to refer to this menu by (should be unique for this menu)
+ * @param callback $function The function to be called to output the content for this page.
+ *
+ * @return string|bool The resulting page's hook_suffix, or false if the user does not have the capability required.
+ */
+function add_submenu_page( $parent_slug, $page_title, $menu_title, $capability, $menu_slug, $function = '' ) {
+ global $submenu;
+ global $menu;
+ global $_wp_real_parent_file;
+ global $_wp_submenu_nopriv;
+ global $_registered_pages;
+ global $_parent_pages;
+
+ $menu_slug = plugin_basename( $menu_slug );
+ $parent_slug = plugin_basename( $parent_slug);
+
+ if ( isset( $_wp_real_parent_file[$parent_slug] ) )
+ $parent_slug = $_wp_real_parent_file[$parent_slug];
+
+ if ( !current_user_can( $capability ) ) {
+ $_wp_submenu_nopriv[$parent_slug][$menu_slug] = 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_slug] ) && $menu_slug != $parent_slug ) {
+ foreach ( (array)$menu as $parent_menu ) {
+ if ( $parent_menu[2] == $parent_slug && current_user_can( $parent_menu[1] ) )
+ $submenu[$parent_slug][] = $parent_menu;
+ }
+ }
+
+ $submenu[$parent_slug][] = array ( $menu_title, $capability, $menu_slug, $page_title );
+
+ $hookname = get_plugin_page_hookname( $menu_slug, $parent_slug);
+ 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_slug )
+ $_registered_pages[get_plugin_page_hookname( $menu_slug, 'edit.php')] = true;
+
+ // No parent as top level
+ $_parent_pages[$menu_slug] = $parent_slug;
+
+ return $hookname;
+}
+
+/**
+ * Add sub menu page to the tools main menu.
+ *
+ * This function takes a capability which will be used to determine whether
+ * or not a page is included in the menu.
+ *
+ * The function which is hooked in to handle the output of the page must check
+ * that the user has the required capability as well.
+ *
+ * @param string $page_title The text to be displayed in the title tags of the page when the menu is selected
+ * @param string $menu_title The text to be used for the menu
+ * @param string $capability The capability required for this menu to be displayed to the user.
+ * @param string $menu_slug The slug name to refer to this menu by (should be unique for this menu)
+ * @param callback $function The function to be called to output the content for this page.
+ *
+ * @return string|bool The resulting page's hook_suffix, or false if the user does not have the capability required.
+ */
+function add_management_page( $page_title, $menu_title, $capability, $menu_slug, $function = '' ) {
+ return add_submenu_page( 'tools.php', $page_title, $menu_title, $capability, $menu_slug, $function );
+}
+
+/**
+ * Add sub menu page to the options main menu.
+ *
+ * This function takes a capability which will be used to determine whether
+ * or not a page is included in the menu.
+ *
+ * The function which is hooked in to handle the output of the page must check
+ * that the user has the required capability as well.
+ *
+ * @param string $page_title The text to be displayed in the title tags of the page when the menu is selected
+ * @param string $menu_title The text to be used for the menu
+ * @param string $capability The capability required for this menu to be displayed to the user.
+ * @param string $menu_slug The slug name to refer to this menu by (should be unique for this menu)
+ * @param callback $function The function to be called to output the content for this page.
+ *
+ * @return string|bool The resulting page's hook_suffix, or false if the user does not have the capability required.
+ */
+function add_options_page( $page_title, $menu_title, $capability, $menu_slug, $function = '' ) {
+ return add_submenu_page( 'options-general.php', $page_title, $menu_title, $capability, $menu_slug, $function );
+}
+
+/**
+ * Add sub menu page to the themes main menu.
+ *
+ * This function takes a capability which will be used to determine whether
+ * or not a page is included in the menu.
+ *
+ * The function which is hooked in to handle the output of the page must check
+ * that the user has the required capability as well.
+ *
+ * @param string $page_title The text to be displayed in the title tags of the page when the menu is selected
+ * @param string $menu_title The text to be used for the menu
+ * @param string $capability The capability required for this menu to be displayed to the user.
+ * @param string $menu_slug The slug name to refer to this menu by (should be unique for this menu)
+ * @param callback $function The function to be called to output the content for this page.
+ *
+ * @return string|bool The resulting page's hook_suffix, or false if the user does not have the capability required.
+ */
+function add_theme_page( $page_title, $menu_title, $capability, $menu_slug, $function = '' ) {
+ return add_submenu_page( 'themes.php', $page_title, $menu_title, $capability, $menu_slug, $function );
+}
+
+/**
+ * Add sub menu page to the plugins main menu.
+ *
+ * This function takes a capability which will be used to determine whether
+ * or not a page is included in the menu.
+ *
+ * The function which is hooked in to handle the output of the page must check
+ * that the user has the required capability as well.
+ *
+ * @param string $page_title The text to be displayed in the title tags of the page when the menu is selected
+ * @param string $menu_title The text to be used for the menu
+ * @param string $capability The capability required for this menu to be displayed to the user.
+ * @param string $menu_slug The slug name to refer to this menu by (should be unique for this menu)
+ * @param callback $function The function to be called to output the content for this page.
+ *
+ * @return string|bool The resulting page's hook_suffix, or false if the user does not have the capability required.
+ */
+function add_plugins_page( $page_title, $menu_title, $capability, $menu_slug, $function = '' ) {
+ return add_submenu_page( 'plugins.php', $page_title, $menu_title, $capability, $menu_slug, $function );
+}
+
+/**
+ * Add sub menu page to the Users/Profile main menu.
+ *
+ * This function takes a capability which will be used to determine whether
+ * or not a page is included in the menu.
+ *
+ * The function which is hooked in to handle the output of the page must check
+ * that the user has the required capability as well.
+ *
+ * @param string $page_title The text to be displayed in the title tags of the page when the menu is selected
+ * @param string $menu_title The text to be used for the menu
+ * @param string $capability The capability required for this menu to be displayed to the user.
+ * @param string $menu_slug The slug name to refer to this menu by (should be unique for this menu)
+ * @param callback $function The function to be called to output the content for this page.
+ *
+ * @return string|bool The resulting page's hook_suffix, or false if the user does not have the capability required.
+ */
+function add_users_page( $page_title, $menu_title, $capability, $menu_slug, $function = '' ) {
+ if ( current_user_can('edit_users') )
+ $parent = 'users.php';
+ else
+ $parent = 'profile.php';
+ return add_submenu_page( $parent, $page_title, $menu_title, $capability, $menu_slug, $function );
+}
+/**
+ * Add sub menu page to the Dashboard main menu.
+ *
+ * This function takes a capability which will be used to determine whether
+ * or not a page is included in the menu.
+ *
+ * The function which is hooked in to handle the output of the page must check
+ * that the user has the required capability as well.
+ *
+ * @param string $page_title The text to be displayed in the title tags of the page when the menu is selected
+ * @param string $menu_title The text to be used for the menu
+ * @param string $capability The capability required for this menu to be displayed to the user.
+ * @param string $menu_slug The slug name to refer to this menu by (should be unique for this menu)
+ * @param callback $function The function to be called to output the content for this page.
+ *
+ * @return string|bool The resulting page's hook_suffix, or false if the user does not have the capability required.
+ */
+function add_dashboard_page( $page_title, $menu_title, $capability, $menu_slug, $function = '' ) {
+ return add_submenu_page( 'index.php', $page_title, $menu_title, $capability, $menu_slug, $function );
+}
+
+/**
+ * Add sub menu page to the posts main menu.
+ *
+ * This function takes a capability which will be used to determine whether
+ * or not a page is included in the menu.
+ *
+ * The function which is hooked in to handle the output of the page must check
+ * that the user has the required capability as well.
+ *
+ * @param string $page_title The text to be displayed in the title tags of the page when the menu is selected
+ * @param string $menu_title The text to be used for the menu
+ * @param string $capability The capability required for this menu to be displayed to the user.
+ * @param string $menu_slug The slug name to refer to this menu by (should be unique for this menu)
+ * @param callback $function The function to be called to output the content for this page.
+ *
+ * @return string|bool The resulting page's hook_suffix, or false if the user does not have the capability required.
+ */
+function add_posts_page( $page_title, $menu_title, $capability, $menu_slug, $function = '' ) {
+ return add_submenu_page( 'edit.php', $page_title, $menu_title, $capability, $menu_slug, $function );
+}
+
+/**
+ * Add sub menu page to the media main menu.
+ *
+ * This function takes a capability which will be used to determine whether
+ * or not a page is included in the menu.
+ *
+ * The function which is hooked in to handle the output of the page must check
+ * that the user has the required capability as well.
+ *
+ * @param string $page_title The text to be displayed in the title tags of the page when the menu is selected
+ * @param string $menu_title The text to be used for the menu
+ * @param string $capability The capability required for this menu to be displayed to the user.
+ * @param string $menu_slug The slug name to refer to this menu by (should be unique for this menu)
+ * @param callback $function The function to be called to output the content for this page.
+ *
+ * @return string|bool The resulting page's hook_suffix, or false if the user does not have the capability required.
+ */
+function add_media_page( $page_title, $menu_title, $capability, $menu_slug, $function = '' ) {
+ return add_submenu_page( 'upload.php', $page_title, $menu_title, $capability, $menu_slug, $function );
+}
+
+/**
+ * Add sub menu page to the links main menu.
+ *
+ * This function takes a capability which will be used to determine whether
+ * or not a page is included in the menu.
+ *
+ * The function which is hooked in to handle the output of the page must check
+ * that the user has the required capability as well.
+ *
+ * @param string $page_title The text to be displayed in the title tags of the page when the menu is selected
+ * @param string $menu_title The text to be used for the menu
+ * @param string $capability The capability required for this menu to be displayed to the user.
+ * @param string $menu_slug The slug name to refer to this menu by (should be unique for this menu)
+ * @param callback $function The function to be called to output the content for this page.
+ *
+ * @return string|bool The resulting page's hook_suffix, or false if the user does not have the capability required.
+ */
+function add_links_page( $page_title, $menu_title, $capability, $menu_slug, $function = '' ) {
+ return add_submenu_page( 'link-manager.php', $page_title, $menu_title, $capability, $menu_slug, $function );
+}
+
+/**
+ * Add sub menu page to the pages main menu.
+ *
+ * This function takes a capability which will be used to determine whether
+ * or not a page is included in the menu.
+ *
+ * The function which is hooked in to handle the output of the page must check
+ * that the user has the required capability as well.
+ *
+ * @param string $page_title The text to be displayed in the title tags of the page when the menu is selected
+ * @param string $menu_title The text to be used for the menu
+ * @param string $capability The capability required for this menu to be displayed to the user.
+ * @param string $menu_slug The slug name to refer to this menu by (should be unique for this menu)
+ * @param callback $function The function to be called to output the content for this page.
+ *
+ * @return string|bool The resulting page's hook_suffix, or false if the user does not have the capability required.
+*/
+function add_pages_page( $page_title, $menu_title, $capability, $menu_slug, $function = '' ) {
+ return add_submenu_page( 'edit.php?post_type=page', $page_title, $menu_title, $capability, $menu_slug, $function );
+}
+
+/**
+ * Add sub menu page to the comments main menu.
+ *
+ * This function takes a capability which will be used to determine whether
+ * or not a page is included in the menu.
+ *
+ * The function which is hooked in to handle the output of the page must check
+ * that the user has the required capability as well.
+ *
+ * @param string $page_title The text to be displayed in the title tags of the page when the menu is selected
+ * @param string $menu_title The text to be used for the menu
+ * @param string $capability The capability required for this menu to be displayed to the user.
+ * @param string $menu_slug The slug name to refer to this menu by (should be unique for this menu)
+ * @param callback $function The function to be called to output the content for this page.
+ *
+ * @return string|bool The resulting page's hook_suffix, or false if the user does not have the capability required.
+*/
+function add_comments_page( $page_title, $menu_title, $capability, $menu_slug, $function = '' ) {
+ return add_submenu_page( 'edit-comments.php', $page_title, $menu_title, $capability, $menu_slug, $function );
+}
+
+/**
+ * Remove a top level admin menu
+ *
+ * @since 3.1.0
+ *
+ * @param string $menu_slug The slug of the menu
+ * @return array|bool The removed menu on success, False if not found
+ */
+function remove_menu_page( $menu_slug ) {
+ global $menu;
+
+ foreach ( $menu as $i => $item ) {
+ if ( $menu_slug == $item[2] ) {
+ unset( $menu[$i] );
+ return $item;
+ }
+ }
+
+ return false;
+}
+
+/**
+ * Remove an admin submenu
+ *
+ * @since 3.1.0
+ *
+ * @param string $menu_slug The slug for the parent menu
+ * @param string $submenu_slug The slug of the submenu
+ * @return array|bool The removed submenu on success, False if not found
+ */
+function remove_submenu_page( $menu_slug, $submenu_slug ) {
+ global $submenu;
+
+ if ( !isset( $submenu[$menu_slug] ) )
+ return false;
+
+ foreach ( $submenu[$menu_slug] as $i => $item ) {
+ if ( $submenu_slug == $item[2] ) {
+ unset( $submenu[$menu_slug][$i] );
+ return $item;
+ }
+ }
+
+ return false;
+}
+
+/**
+ * Get the url to access a particular menu page based on the slug it was registered with.
+ *
+ * If the slug hasn't been registered properly no url will be returned
+ *
+ * @since 3.0
+ *
+ * @param string $menu_slug The slug name to refer to this menu by (should be unique for this menu)
+ * @param bool $echo Whether or not to echo the url - default is true
+ * @return string the url
+ */
+function menu_page_url($menu_slug, $echo = true) {
+ global $_parent_pages;
+
+ if ( isset( $_parent_pages[$menu_slug] ) ) {
+ $parent_slug = $_parent_pages[$menu_slug];
+ if ( $parent_slug && ! isset( $_parent_pages[$parent_slug] ) ) {
+ $url = admin_url( add_query_arg( 'page', $menu_slug, $parent_slug ) );
+ } else {
+ $url = admin_url( 'admin.php?page=' . $menu_slug );
+ }
+ } else {
+ $url = '';
+ }
+
+ $url = esc_url($url);
+
+ if ( $echo )
+ echo $url;
+
+ return $url;
+}
+
+//
+// Pluggable Menu Support -- Private
+//
+
+function get_admin_page_parent( $parent = '' ) {
+ global $parent_file;
+ global $menu;
+ global $submenu;
+ global $pagenow;
+ global $typenow;
+ 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 ( !empty($typenow) && ($submenu_array[2] == "$pagenow?post_type=$typenow") ) {
+ $parent_file = $parent;
+ return $parent;
+ } elseif ( $submenu_array[2] == $pagenow && empty($typenow) && ( empty($parent_file) || false === strpos($parent_file, '?') ) ) {
+ $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;
+ global $typenow;
+
+ if ( ! 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 != $submenu_array[2] ) ||
+ ( !empty($typenow) && $parent == $pagenow . '?post_type=' . $typenow)
+ )
+ ) {
+ $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 ( 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 = '' ) {
+ global $new_whitelist_options;
+
+ if ( 'misc' == $option_group ) {
+ _deprecated_argument( __FUNCTION__, '3.0', sprintf( __( 'The "%s" options group has been removed. Use another settings group.' ), 'misc' ) );
+ $option_group = 'general';
+ }
+
+ if ( 'privacy' == $option_group ) {
+ _deprecated_argument( __FUNCTION__, '3.5', sprintf( __( 'The "%s" options group has been removed. Use another settings group.' ), 'privacy' ) );
+ $option_group = 'reading';
+ }
+
+ $new_whitelist_options[ $option_group ][] = $option_name;
+ if ( $sanitize_callback != '' )
+ add_filter( "sanitize_option_{$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 = '' ) {
+ global $new_whitelist_options;
+
+ if ( 'misc' == $option_group ) {
+ _deprecated_argument( __FUNCTION__, '3.0', sprintf( __( 'The "%s" options group has been removed. Use another settings group.' ), 'misc' ) );
+ $option_group = 'general';
+ }
+
+ if ( 'privacy' == $option_group ) {
+ _deprecated_argument( __FUNCTION__, '3.5', sprintf( __( 'The "%s" options group has been removed. Use another settings group.' ), 'privacy' ) );
+ $option_group = 'reading';
+ }
+
+ $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 2.7.0
+ *
+ * @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 2.7.0
+ *
+ * @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 2.7.0
+ *
+ * @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");
+}
+
+/**
+ * Clears the Plugins cache used by get_plugins() and by default, the Plugin Update cache.
+ *
+ * @since 3.7.0
+ *
+ * @param bool $clear_update_cache Whether to clear the Plugin updates cache
+ */
+function wp_clean_plugins_cache( $clear_update_cache = true ) {
+ if ( $clear_update_cache )
+ delete_site_transient( 'update_plugins' );
+ wp_cache_delete( 'plugins', 'plugins' );
+}