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plugin.php
File metadata and controls
1892 lines (1664 loc) · 65 KB
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<?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.
*
* /*
* 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
* load_plugin_textdomain()
* 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
*
* 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 https://core.trac.wordpress.org/ticket/5651 Previous Optimizations.
* @link https://core.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'] . '">' . $plugin_data['Name'] . '</a>';
if ( $plugin_data['AuthorURI'] && $plugin_data['Author'] )
$plugin_data['Author'] = '<a href="' . $plugin_data['AuthorURI'] . '">' . $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 ( ( $network_wide && ! isset( $current[ $plugin ] ) ) || ( ! $network_wide && ! 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();
wp_register_plugin_realpath( WP_PLUGIN_DIR . '/' . $plugin );
$_wp_plugin_file = $plugin;
include_once( WP_PLUGIN_DIR . '/' . $plugin );
$plugin = $_wp_plugin_file; // Avoid stomping of the $plugin variable in a plugin.
if ( ! $silent ) {
/**
* Fires before a plugin is activated.
*
* If a plugin is silently activated (such as during an update),
* this hook does not fire.
*
* @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, $network_wide );
/**
* Fires as a specific plugin is being activated.
*
* This hook is the "activation" hook used internally by
* {@see register_activation_hook()}. The dynamic portion of the
* hook name, `$plugin`, refers to the plugin basename.
*
* If a plugin is silently activated (such as during an update),
* this hook does not fire.
*
* @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.
*
* If a plugin is silently activated (such as during an update),
* this hook does not fire.
*
* @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 before a plugin is deactivated.
*
* If a plugin is silently deactivated (such as during an update),
* this hook does not fire.
*
* @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 ( ! $silent ) {
/**
* Fires as a specific plugin is being deactivated.
*
* This hook is the "deactivation" hook used internally by
* {@see register_deactivation_hook()}. The dynamic portion of the
* hook name, `$plugin`, refers to the plugin basename.
*
* If a plugin is silently deactivated (such as during an update),
* this hook does not fire.
*
* @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 after a plugin is deactivated.
*
* If a plugin is silently deactivated (such as during an update),
* this hook does not fire.
*
* @since 2.9.0
*
* @param string $plugin Plugin basename.
* @param bool $network_deactivating Whether the plugin is deactivated for all sites in the network
* or just the current site. Multisite only. Default 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 Single plugin or list of plugins to activate.
* @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 list of plugins.
*
* @since 2.6.0
*
* @param array $plugins List of plugins to delete.
* @param string $deprecated Deprecated.
* @return bool|null|WP_Error True on success, false is $plugins is empty, WP_Error on failure.
* Null if filesystem credentials are required to proceed.
*/
function delete_plugins( $plugins, $deprecated = '' ) {
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 );
$plugin_translations = wp_get_installed_translations( 'plugins' );
$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;
continue;
}
// Remove language files, silently.
$plugin_slug = dirname( $plugin_file );
if ( '.' !== $plugin_slug && ! empty( $plugin_translations[ $plugin_slug ] ) ) {
$translations = $plugin_translations[ $plugin_slug ];
foreach ( $translations as $translation => $data ) {
$wp_filesystem->delete( WP_LANG_DIR . '/plugins/' . $plugin_slug . '-' . $translation . '.po' );
$wp_filesystem->delete( WP_LANG_DIR . '/plugins/' . $plugin_slug . '-' . $translation . '.mo' );
}
}
}
// Remove deleted plugins from the plugin updates list.
if ( $current = get_site_transient('update_plugins') ) {
// Don't remove the plugins that weren't deleted.
$deleted = array_diff( $plugins, $errors );
foreach ( $deleted as $plugin_file ) {
unset( $current->response[ $plugin_file ] );
}
set_site_transient( 'update_plugins', $current );
}
if ( ! empty($errors) )
return new WP_Error('could_not_remove_plugin', sprintf(__('Could not fully remove the plugin(s) %s.'), implode(', ', $errors)) );
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() && current_user_can( 'manage_network_plugins' ) ) {
$network_plugins = (array) get_site_option( 'active_sitewide_plugins', array() );
$plugins = array_merge( $plugins, array_keys( $network_plugins ) );
}
if ( empty( $plugins ) )
return array();
$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);
wp_register_plugin_realpath( WP_PLUGIN_DIR . '/' . dirname( $file ) );
include( WP_PLUGIN_DIR . '/' . dirname($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);
wp_register_plugin_realpath( WP_PLUGIN_DIR . '/' . $file );
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.