Wordpress 4.6
[autoinstalls/wordpress.git] / wp-admin / plugins.php
index 46d2b6115e6a4629fc6481299074ee3a28e97b1f..1d462381935d360336bf9bc84c7e90548b89a0fc 100644 (file)
 <?php
-require_once('admin.php');
+/**
+ * Plugins administration panel.
+ *
+ * @package WordPress
+ * @subpackage Administration
+ */
 
-$action = '';
-foreach( array('activate-selected', 'deactivate-selected', 'delete-selected', 'clear-recent-list') as $action_key ) {
-       if( isset($_POST[$action_key]) ) {
-               $action = $action_key;
-               break;
-       }
-}
+/** WordPress Administration Bootstrap */
+require_once( dirname( __FILE__ ) . '/admin.php' );
+
+if ( ! current_user_can('activate_plugins') )
+       wp_die( __( 'Sorry, you are not allowed to manage plugins for this site.' ) );
+
+$wp_list_table = _get_list_table('WP_Plugins_List_Table');
+$pagenum = $wp_list_table->get_pagenum();
+
+$action = $wp_list_table->current_action();
 
-if( isset($_GET['action']) )
-       $action = $_GET['action'];
+$plugin = isset($_REQUEST['plugin']) ? $_REQUEST['plugin'] : '';
+$s = isset($_REQUEST['s']) ? urlencode( wp_unslash( $_REQUEST['s'] ) ) : '';
 
-$plugin = $_REQUEST['plugin'];
+// Clean up request URI from temporary args for screen options/paging uri's to work as expected.
+$_SERVER['REQUEST_URI'] = remove_query_arg(array('error', 'deleted', 'activate', 'activate-multi', 'deactivate', 'deactivate-multi', '_error_nonce'), $_SERVER['REQUEST_URI']);
 
-if( !empty($action) ) {
-       switch( $action ) {
+wp_enqueue_script( 'updates' );
+
+if ( $action ) {
+
+       switch ( $action ) {
                case 'activate':
+                       if ( ! current_user_can('activate_plugins') )
+                               wp_die(__('Sorry, you are not allowed to activate plugins for this site.'));
+
+                       if ( is_multisite() && ! is_network_admin() && is_network_only_plugin( $plugin ) ) {
+                               wp_redirect( self_admin_url("plugins.php?plugin_status=$status&paged=$page&s=$s") );
+                               exit;
+                       }
+
                        check_admin_referer('activate-plugin_' . $plugin);
-                       $result = activate_plugin($plugin, 'plugins.php?error=true&plugin=' . $plugin);
-                       if ( is_wp_error( $result ) )
-                               wp_die( $result->get_error_message() );
-                       $recent = (array)get_option('recently_activated');
-                       if( isset($recent[ $plugin ]) ){
-                               unset($recent[ $plugin ]);
-                               update_option('recently_activated', $recent);
+
+                       $result = activate_plugin($plugin, self_admin_url('plugins.php?error=true&plugin=' . $plugin), is_network_admin() );
+                       if ( is_wp_error( $result ) ) {
+                               if ( 'unexpected_output' == $result->get_error_code() ) {
+                                       $redirect = self_admin_url('plugins.php?error=true&charsout=' . strlen($result->get_error_data()) . '&plugin=' . $plugin . "&plugin_status=$status&paged=$page&s=$s");
+                                       wp_redirect(add_query_arg('_error_nonce', wp_create_nonce('plugin-activation-error_' . $plugin), $redirect));
+                                       exit;
+                               } else {
+                                       wp_die($result);
+                               }
+                       }
+
+                       if ( ! is_network_admin() ) {
+                               $recent = (array) get_option( 'recently_activated' );
+                               unset( $recent[ $plugin ] );
+                               update_option( 'recently_activated', $recent );
+                       } else {
+                               $recent = (array) get_site_option( 'recently_activated' );
+                               unset( $recent[ $plugin ] );
+                               update_site_option( 'recently_activated', $recent );
+                       }
+
+                       if ( isset($_GET['from']) && 'import' == $_GET['from'] ) {
+                               wp_redirect( self_admin_url("import.php?import=" . str_replace('-importer', '', dirname($plugin))) ); // overrides the ?error=true one above and redirects to the Imports page, stripping the -importer suffix
+                       } else {
+                               wp_redirect( self_admin_url("plugins.php?activate=true&plugin_status=$status&paged=$page&s=$s") ); // overrides the ?error=true one above
                        }
-                       wp_redirect('plugins.php?activate=true'); // overrides the ?error=true one above
                        exit;
-                       break;
+
                case 'activate-selected':
-                       check_admin_referer('bulk-manage-plugins');
-                       activate_plugins($_POST['checked'], 'plugins.php?error=true');
+                       if ( ! current_user_can('activate_plugins') )
+                               wp_die(__('Sorry, you are not allowed to activate plugins for this site.'));
+
+                       check_admin_referer('bulk-plugins');
+
+                       $plugins = isset( $_POST['checked'] ) ? (array) $_POST['checked'] : array();
 
-                       $recent = (array)get_option('recently_activated');
-                       foreach( (array)$_POST['checked'] as $plugin => $time) {
-                               if( isset($recent[ $plugin ]) )
-                                       unset($recent[ $plugin ]);
+                       if ( is_network_admin() ) {
+                               foreach ( $plugins as $i => $plugin ) {
+                                       // Only activate plugins which are not already network activated.
+                                       if ( is_plugin_active_for_network( $plugin ) ) {
+                                               unset( $plugins[ $i ] );
+                                       }
+                               }
+                       } else {
+                               foreach ( $plugins as $i => $plugin ) {
+                                       // Only activate plugins which are not already active and are not network-only when on Multisite.
+                                       if ( is_plugin_active( $plugin ) || ( is_multisite() && is_network_only_plugin( $plugin ) ) ) {
+                                               unset( $plugins[ $i ] );
+                                       }
+                               }
                        }
-                       if( $recent != get_option('recently_activated') ) //If array changed, update it.
-                               update_option('recently_activated', $recent);
 
-                       wp_redirect('plugins.php?activate-multi=true');
+                       if ( empty($plugins) ) {
+                               wp_redirect( self_admin_url("plugins.php?plugin_status=$status&paged=$page&s=$s") );
+                               exit;
+                       }
+
+                       activate_plugins($plugins, self_admin_url('plugins.php?error=true'), is_network_admin() );
+
+                       if ( ! is_network_admin() ) {
+                               $recent = (array) get_option('recently_activated' );
+                       } else {
+                               $recent = (array) get_site_option('recently_activated' );
+                       }
+
+                       foreach ( $plugins as $plugin ) {
+                               unset( $recent[ $plugin ] );
+                       }
+
+                       if ( ! is_network_admin() ) {
+                               update_option( 'recently_activated', $recent );
+                       } else {
+                               update_site_option( 'recently_activated', $recent );
+                       }
+
+                       wp_redirect( self_admin_url("plugins.php?activate-multi=true&plugin_status=$status&paged=$page&s=$s") );
                        exit;
-                       break;
+
+               case 'update-selected' :
+
+                       check_admin_referer( 'bulk-plugins' );
+
+                       if ( isset( $_GET['plugins'] ) )
+                               $plugins = explode( ',', $_GET['plugins'] );
+                       elseif ( isset( $_POST['checked'] ) )
+                               $plugins = (array) $_POST['checked'];
+                       else
+                               $plugins = array();
+
+                       $title = __( 'Update Plugins' );
+                       $parent_file = 'plugins.php';
+
+                       wp_enqueue_script( 'updates' );
+                       require_once(ABSPATH . 'wp-admin/admin-header.php');
+
+                       echo '<div class="wrap">';
+                       echo '<h1>' . esc_html( $title ) . '</h1>';
+
+                       $url = self_admin_url('update.php?action=update-selected&amp;plugins=' . urlencode( join(',', $plugins) ));
+                       $url = wp_nonce_url($url, 'bulk-update-plugins');
+
+                       echo "<iframe src='$url' style='width: 100%; height:100%; min-height:850px;'></iframe>";
+                       echo '</div>';
+                       require_once(ABSPATH . 'wp-admin/admin-footer.php');
+                       exit;
+
                case 'error_scrape':
+                       if ( ! current_user_can('activate_plugins') )
+                               wp_die(__('Sorry, you are not allowed to activate plugins for this site.'));
+
                        check_admin_referer('plugin-activation-error_' . $plugin);
+
                        $valid = validate_plugin($plugin);
                        if ( is_wp_error($valid) )
                                wp_die($valid);
-                       error_reporting( E_ALL ^ E_NOTICE );
+
+                       if ( ! WP_DEBUG ) {
+                               error_reporting( E_CORE_ERROR | E_CORE_WARNING | E_COMPILE_ERROR | E_ERROR | E_WARNING | E_PARSE | E_USER_ERROR | E_USER_WARNING | E_RECOVERABLE_ERROR );
+                       }
+
                        @ini_set('display_errors', true); //Ensure that Fatal errors are displayed.
-                       include(WP_PLUGIN_DIR . '/' . $plugin);
+                       // Go back to "sandbox" scope so we get the same errors as before
+                       plugin_sandbox_scrape( $plugin );
+                       /** This action is documented in wp-admin/includes/plugin.php */
+                       do_action( "activate_{$plugin}" );
                        exit;
-                       break;
+
                case 'deactivate':
+                       if ( ! current_user_can('activate_plugins') )
+                               wp_die(__('Sorry, you are not allowed to deactivate plugins for this site.'));
+
                        check_admin_referer('deactivate-plugin_' . $plugin);
-                       deactivate_plugins($plugin);
-                       update_option('recently_activated', array($plugin => time()) + (array)get_option('recently_activated'));
-                       wp_redirect('plugins.php?deactivate=true');
+
+                       if ( ! is_network_admin() && is_plugin_active_for_network( $plugin ) ) {
+                               wp_redirect( self_admin_url("plugins.php?plugin_status=$status&paged=$page&s=$s") );
+                               exit;
+                       }
+
+                       deactivate_plugins( $plugin, false, is_network_admin() );
+
+                       if ( ! is_network_admin() ) {
+                               update_option( 'recently_activated', array( $plugin => time() ) + (array) get_option( 'recently_activated' ) );
+                       } else {
+                               update_site_option( 'recently_activated', array( $plugin => time() ) + (array) get_site_option( 'recently_activated' ) );
+                       }
+
+                       if ( headers_sent() )
+                               echo "<meta http-equiv='refresh' content='" . esc_attr( "0;url=plugins.php?deactivate=true&plugin_status=$status&paged=$page&s=$s" ) . "' />";
+                       else
+                               wp_redirect( self_admin_url("plugins.php?deactivate=true&plugin_status=$status&paged=$page&s=$s") );
                        exit;
-                       break;
+
                case 'deactivate-selected':
-                       check_admin_referer('bulk-manage-plugins');
-                       deactivate_plugins($_POST['checked']);
+                       if ( ! current_user_can('activate_plugins') )
+                               wp_die(__('Sorry, you are not allowed to deactivate plugins for this site.'));
+
+                       check_admin_referer('bulk-plugins');
+
+                       $plugins = isset( $_POST['checked'] ) ? (array) $_POST['checked'] : array();
+                       // Do not deactivate plugins which are already deactivated.
+                       if ( is_network_admin() ) {
+                               $plugins = array_filter( $plugins, 'is_plugin_active_for_network' );
+                       } else {
+                               $plugins = array_filter( $plugins, 'is_plugin_active' );
+                               $plugins = array_diff( $plugins, array_filter( $plugins, 'is_plugin_active_for_network' ) );
+                       }
+                       if ( empty($plugins) ) {
+                               wp_redirect( self_admin_url("plugins.php?plugin_status=$status&paged=$page&s=$s") );
+                               exit;
+                       }
+
+                       deactivate_plugins( $plugins, false, is_network_admin() );
+
                        $deactivated = array();
-                       foreach( (array)$_POST['checked'] as $plugin )
+                       foreach ( $plugins as $plugin ) {
                                $deactivated[ $plugin ] = time();
-                       update_option('recently_activated', $deactivated + (array)get_option('recently_activated'));
-                       wp_redirect('plugins.php?deactivate-multi=true');
+                       }
+
+                       if ( ! is_network_admin() ) {
+                               update_option( 'recently_activated', $deactivated + (array) get_option( 'recently_activated' ) );
+                       } else {
+                               update_site_option( 'recently_activated', $deactivated + (array) get_site_option( 'recently_activated' ) );
+                       }
+
+                       wp_redirect( self_admin_url("plugins.php?deactivate-multi=true&plugin_status=$status&paged=$page&s=$s") );
                        exit;
-                       break;
+
                case 'delete-selected':
-                       if( ! current_user_can('delete_plugins') )
-                               wp_die(__('You do not have sufficient permissions to delete plugins for this blog.'));
-                       
-                       check_admin_referer('bulk-manage-plugins');
-                       
-                       $plugins = $_REQUEST['checked']; //$_POST = from the plugin form; $_GET = from the FTP details screen.
+                       if ( ! current_user_can('delete_plugins') ) {
+                               wp_die(__('Sorry, you are not allowed to delete plugins for this site.'));
+                       }
+
+                       check_admin_referer('bulk-plugins');
+
+                       //$_POST = from the plugin form; $_GET = from the FTP details screen.
+                       $plugins = isset( $_REQUEST['checked'] ) ? (array) $_REQUEST['checked'] : array();
+                       if ( empty( $plugins ) ) {
+                               wp_redirect( self_admin_url("plugins.php?plugin_status=$status&paged=$page&s=$s") );
+                               exit;
+                       }
+
+                       $plugins = array_filter($plugins, 'is_plugin_inactive'); // Do not allow to delete Activated plugins.
+                       if ( empty( $plugins ) ) {
+                               wp_redirect( self_admin_url( "plugins.php?error=true&main=true&plugin_status=$status&paged=$page&s=$s" ) );
+                               exit;
+                       }
+
                        include(ABSPATH . 'wp-admin/update.php');
 
-                       $title = __('Delete Plugin');
                        $parent_file = 'plugins.php';
-                       
-                       if( ! isset($_REQUEST['verify-delete']) ) {
+
+                       if ( ! isset($_REQUEST['verify-delete']) ) {
                                wp_enqueue_script('jquery');
-                               require_once('admin-header.php');
+                               require_once(ABSPATH . 'wp-admin/admin-header.php');
                                ?>
                        <div class="wrap">
-                               <h2><?php _e('Delete Plugin(s)'); ?></h2>               
                                <?php
-                                       $files_to_delete = $plugin_info = array();
-                                       foreach( (array) $plugins as $plugin ) {
-                                               if( '.' == dirname($plugin) ) {
-                                                       $files_to_delete[] = WP_PLUGIN_DIR . '/' . $plugin;
-                                                       if( $data = get_plugin_data(WP_PLUGIN_DIR . '/' . $plugin) )
+                                       $plugin_info = array();
+                                       $have_non_network_plugins = false;
+                                       foreach ( (array) $plugins as $plugin ) {
+                                               $plugin_slug = dirname( $plugin );
+
+                                               if ( '.' == $plugin_slug ) {
+                                                       if ( $data = get_plugin_data( WP_PLUGIN_DIR . '/' . $plugin ) ) {
                                                                $plugin_info[ $plugin ] = $data;
+                                                               $plugin_info[ $plugin ]['is_uninstallable'] = is_uninstallable_plugin( $plugin );
+                                                               if ( ! $plugin_info[ $plugin ]['Network'] ) {
+                                                                       $have_non_network_plugins = true;
+                                                               }
+                                                       }
                                                } else {
-                                                       //Locate all the files in that folder:
-                                                       $files = list_files( WP_PLUGIN_DIR . '/' . dirname($plugin) );
-                                                       if( $files ) {
-                                                               $files_to_delete = array_merge($files_to_delete, $files);
+                                                       // Get plugins list from that folder.
+                                                       if ( $folder_plugins = get_plugins( '/' . $plugin_slug ) ) {
+                                                               foreach ( $folder_plugins as $plugin_file => $data ) {
+                                                                       $plugin_info[ $plugin_file ] = _get_plugin_data_markup_translate( $plugin_file, $data );
+                                                                       $plugin_info[ $plugin_file ]['is_uninstallable'] = is_uninstallable_plugin( $plugin );
+                                                                       if ( ! $plugin_info[ $plugin_file ]['Network'] ) {
+                                                                               $have_non_network_plugins = true;
+                                                                       }
+                                                               }
                                                        }
-                                                       //Get plugins list from that folder
-                                                       if ( $folder_plugins = get_plugins( '/' . dirname($plugin)) )
-                                                               $plugin_info = array_merge($plugin_info, $folder_plugins);
                                                }
                                        }
+                                       $plugins_to_delete = count( $plugin_info );
                                ?>
-                               <p><?php _e('Deleting the selected plugins will remove the following plugin(s) and their files:'); ?></p>
-                               <p>
-                                       <ul>
-                                               <?php 
-                                               foreach( $plugin_info as $plugin )
-                                                       echo '<li>', $plugin['Title'], ' ', __('By'), ' ', $plugin['Author'], '</li>';
+                               <?php if ( 1 == $plugins_to_delete ) : ?>
+                                       <h1><?php _e( 'Delete Plugin' ); ?></h1>
+                                       <?php if ( $have_non_network_plugins && is_network_admin() ) : ?>
+                                               <div class="error"><p><strong><?php _e( 'Caution:' ); ?></strong> <?php _e( 'This plugin may be active on other sites in the network.' ); ?></p></div>
+                                       <?php endif; ?>
+                                       <p><?php _e( 'You are about to remove the following plugin:' ); ?></p>
+                               <?php else: ?>
+                                       <h1><?php _e( 'Delete Plugins' ); ?></h1>
+                                       <?php if ( $have_non_network_plugins && is_network_admin() ) : ?>
+                                               <div class="error"><p><strong><?php _e( 'Caution:' ); ?></strong> <?php _e( 'These plugins may be active on other sites in the network.' ); ?></p></div>
+                                       <?php endif; ?>
+                                       <p><?php _e( 'You are about to remove the following plugins:' ); ?></p>
+                               <?php endif; ?>
+                                       <ul class="ul-disc">
+                                               <?php
+                                               $data_to_delete = false;
+                                               foreach ( $plugin_info as $plugin ) {
+                                                       if ( $plugin['is_uninstallable'] ) {
+                                                               /* translators: 1: plugin name, 2: plugin author */
+                                                               echo '<li>', sprintf( __( '%1$s by %2$s (will also <strong>delete its data</strong>)' ), '<strong>' . $plugin['Name'] . '</strong>', '<em>' . $plugin['AuthorName'] . '</em>' ), '</li>';
+                                                               $data_to_delete = true;
+                                                       } else {
+                                                               /* translators: 1: plugin name, 2: plugin author */
+                                                               echo '<li>', sprintf( _x('%1$s by %2$s', 'plugin' ), '<strong>' . $plugin['Name'] . '</strong>', '<em>' . $plugin['AuthorName'] ) . '</em>', '</li>';
+                                                       }
+                                               }
                                                ?>
                                        </ul>
-                               </p>
-                               <p><?php _e('Are you sure you wish to delete these files?') ?></p>
-                               <form method="post" action="<?php echo clean_url($_SERVER['REQUEST_URI']); ?>" style="display:inline;">
+                               <p><?php
+                               if ( $data_to_delete )
+                                       _e('Are you sure you wish to delete these files and data?');
+                               else
+                                       _e('Are you sure you wish to delete these files?');
+                               ?></p>
+                               <form method="post" action="<?php echo esc_url($_SERVER['REQUEST_URI']); ?>" style="display:inline;">
                                        <input type="hidden" name="verify-delete" value="1" />
-                                       <input type="hidden" name="delete-selected" value="1" />
+                                       <input type="hidden" name="action" value="delete-selected" />
                                        <?php
-                                               foreach( (array)$plugins as $plugin ) {
-                                                       $plugin = attribute_escape($plugin);
-                                                       echo "<input type='hidden' name='checked[]' value='$plugin' />";
+                                               foreach ( (array) $plugins as $plugin ) {
+                                                       echo '<input type="hidden" name="checked[]" value="' . esc_attr( $plugin ) . '" />';
                                                }
                                        ?>
-                                       <?php wp_nonce_field('bulk-manage-plugins') ?>
-                                       <input type="submit" name="submit" value="<?php _e('Yes, Delete these files') ?>" class="button" />
+                                       <?php wp_nonce_field('bulk-plugins') ?>
+                                       <?php submit_button( $data_to_delete ? __( 'Yes, delete these files and data' ) : __( 'Yes, delete these files' ), 'button', 'submit', false ); ?>
                                </form>
-                               <form method="post" action="<?php echo clean_url(wp_get_referer()); ?>" style="display:inline;">
-                                       <input type="submit" name="submit" value="<?php _e('No, Return me to the plugin list') ?>" class="button" />
+                               <?php
+                               $referer = wp_get_referer();
+                               ?>
+                               <form method="post" action="<?php echo $referer ? esc_url( $referer ) : ''; ?>" style="display:inline;">
+                                       <?php submit_button( __( 'No, return me to the plugin list' ), 'button', 'submit', false ); ?>
                                </form>
-
-                               <p><a href="#" onclick="jQuery('#files-list').toggle(); return false;"><?php _e('Click to view entire list of files which will be deleted'); ?></a></p>
-                               <div id="files-list" style="display:none;">
-                                       <ul>
-                                       <?php
-                                               foreach( (array)$files_to_delete as $file ) {
-                                                       $file = str_replace(ABSPATH, '', $file);
-                                                       echo "<li>$file</li>";
-                                               }
-                                       ?>
-                                       </ul>
-                               </div>                          
                        </div>
                                <?php
-                               require_once('admin-footer.php');
+                               require_once(ABSPATH . 'wp-admin/admin-footer.php');
                                exit;
-                       } //Endif verify-delete
-                       $delete_result = delete_plugins($plugins);
+                       } else {
+                               $plugins_to_delete = count( $plugins );
+                       } // endif verify-delete
+
+                       $delete_result = delete_plugins( $plugins );
+
+                       set_transient('plugins_delete_result_' . $user_ID, $delete_result); //Store the result in a cache rather than a URL param due to object type & length
+                       wp_redirect( self_admin_url("plugins.php?deleted=$plugins_to_delete&plugin_status=$status&paged=$page&s=$s") );
+                       exit;
 
-                       wp_cache_delete('plugins', 'plugins');
-                       break;
                case 'clear-recent-list':
-                       update_option('recently_activated', array());
+                       if ( ! is_network_admin() ) {
+                               update_option( 'recently_activated', array() );
+                       } else {
+                               update_site_option( 'recently_activated', array() );
+                       }
                        break;
        }
 }
 
-wp_enqueue_script('admin-forms');
-
-$title = __('Manage Plugins');
-require_once('admin-header.php');
+$wp_list_table->prepare_items();
+
+wp_enqueue_script('plugin-install');
+add_thickbox();
+
+add_screen_option( 'per_page', array( 'default' => 999 ) );
+
+get_current_screen()->add_help_tab( array(
+'id'           => 'overview',
+'title'                => __('Overview'),
+'content'      =>
+       '<p>' . __('Plugins extend and expand the functionality of WordPress. Once a plugin is installed, you may activate it or deactivate it here.') . '</p>' .
+       '<p>' . __( 'The search for installed plugins will search for terms in their name, description, or author.' ) . ' <span id="live-search-desc" class="hide-if-no-js">' . __( 'The search results will be updated as you type.' ) . '</span></p>' .
+       '<p>' . sprintf(
+               /* translators: %s: WordPress Plugin Directory URL */
+               __( 'If you would like to see more plugins to choose from, click on the &#8220;Add New&#8221; button and you will be able to browse or search for additional plugins from the <a href="%s" target="_blank">WordPress Plugin Directory</a>. Plugins in the WordPress Plugin Directory are designed and developed by third parties, and are compatible with the license WordPress uses. Oh, and they&#8217;re free!' ),
+               'https://wordpress.org/plugins/'
+       ) . '</p>'
+) );
+get_current_screen()->add_help_tab( array(
+'id'           => 'compatibility-problems',
+'title'                => __('Troubleshooting'),
+'content'      =>
+       '<p>' . __('Most of the time, plugins play nicely with the core of WordPress and with other plugins. Sometimes, though, a plugin&#8217;s code will get in the way of another plugin, causing compatibility issues. If your site starts doing strange things, this may be the problem. Try deactivating all your plugins and re-activating them in various combinations until you isolate which one(s) caused the issue.') . '</p>' .
+       '<p>' . sprintf(
+               /* translators: WP_PLUGIN_DIR constant value */
+               __( 'If something goes wrong with a plugin and you can&#8217;t use WordPress, delete or rename that file in the %s directory and it will be automatically deactivated.' ),
+               '<code>' . WP_PLUGIN_DIR . '</code>'
+       ) . '</p>'
+) );
+
+get_current_screen()->set_help_sidebar(
+       '<p><strong>' . __('For more information:') . '</strong></p>' .
+       '<p>' . __('<a href="https://codex.wordpress.org/Managing_Plugins#Plugin_Management" target="_blank">Documentation on Managing Plugins</a>') . '</p>' .
+       '<p>' . __('<a href="https://wordpress.org/support/" target="_blank">Support Forums</a>') . '</p>'
+);
+
+get_current_screen()->set_screen_reader_content( array(
+       'heading_views'      => __( 'Filter plugins list' ),
+       'heading_pagination' => __( 'Plugins list navigation' ),
+       'heading_list'       => __( 'Plugins list' ),
+) );
+
+$title = __('Plugins');
+$parent_file = 'plugins.php';
+
+require_once(ABSPATH . 'wp-admin/admin-header.php');
 
 $invalid = validate_active_plugins();
-if( !empty($invalid) )
-       foreach($invalid as $plugin_file => $error)
-               echo '<div id="message" class="error"><p>' . sprintf(__('The plugin <code>%s</code> has been <strong>deactivated</strong> due to an error: %s'), wp_specialchars($plugin_file), $error->get_error_message()) . '</p></div>';
+if ( ! empty( $invalid ) ) {
+       foreach ( $invalid as $plugin_file => $error ) {
+               echo '<div id="message" class="error"><p>';
+               printf(
+                       /* translators: 1: plugin file 2: error message */
+                       __( 'The plugin %1$s has been <strong>deactivated</strong> due to an error: %2$s' ),
+                       '<code>' . esc_html( $plugin_file ) . '</code>',
+                       $error->get_error_message() );
+               echo '</p></div>';
+       }
+}
 ?>
 
-<?php if ( isset($_GET['error']) ) : ?>
-       <div id="message" class="updated fade"><p><?php _e('Plugin could not be activated because it triggered a <strong>fatal error</strong>.') ?></p>
+<?php if ( isset($_GET['error']) ) :
+
+       if ( isset( $_GET['main'] ) )
+               $errmsg = __( 'You cannot delete a plugin while it is active on the main site.' );
+       elseif ( isset($_GET['charsout']) )
+               $errmsg = sprintf(__('The plugin generated %d characters of <strong>unexpected output</strong> during activation. If you notice &#8220;headers already sent&#8221; messages, problems with syndication feeds or other issues, try deactivating or removing this plugin.'), $_GET['charsout']);
+       else
+               $errmsg = __('Plugin could not be activated because it triggered a <strong>fatal error</strong>.');
+       ?>
+       <div id="message" class="error"><p><?php echo $errmsg; ?></p>
        <?php
-               if ( wp_verify_nonce($_GET['_error_nonce'], 'plugin-activation-error_' . $plugin) ) { ?>
-       <iframe style="border:0" width="100%" height="70px" src="<?php echo admin_url('plugins.php?action=error_scrape&amp;plugin=' . attribute_escape($plugin) . '&amp;_wpnonce=' . attribute_escape($_GET['_error_nonce'])); ?>"></iframe>
+               if ( ! isset( $_GET['main'] ) && ! isset( $_GET['charsout'] ) && wp_verify_nonce( $_GET['_error_nonce'], 'plugin-activation-error_' . $plugin ) ) {
+                       $iframe_url = add_query_arg( array(
+                               'action'   => 'error_scrape',
+                               'plugin'   => urlencode( $plugin ),
+                               '_wpnonce' => urlencode( $_GET['_error_nonce'] ),
+                       ), admin_url( 'plugins.php' ) );
+               ?>
+               <iframe style="border:0" width="100%" height="70px" src="<?php echo esc_url( $iframe_url ); ?>"></iframe>
        <?php
                }
        ?>
        </div>
-<?php elseif ( 'delete-selected' == $action ) :
+<?php elseif ( isset($_GET['deleted']) ) :
+               $delete_result = get_transient( 'plugins_delete_result_' . $user_ID );
+               // Delete it once we're done.
+               delete_transient( 'plugins_delete_result_' . $user_ID );
+
                if ( is_wp_error($delete_result) ) : ?>
-               <div id="message" class="updated fade"><p><?php printf( __('Plugin could not be deleted due to an error: %s'), $delete_result->get_error_message() ); ?></p></div>
+               <div id="message" class="error notice is-dismissible"><p><?php printf( __('Plugin could not be deleted due to an error: %s'), $delete_result->get_error_message() ); ?></p></div>
                <?php else : ?>
-               <div id="message" class="updated fade"><p><?php _e('The selected plugins have been <strong>deleted</strong>.'); ?></p></div>
+               <div id="message" class="updated notice is-dismissible">
+                       <p>
+                               <?php
+                               if ( 1 == (int) $_GET['deleted'] ) {
+                                       _e( 'The selected plugin has been <strong>deleted</strong>.' );
+                               } else {
+                                       _e( 'The selected plugins have been <strong>deleted</strong>.' );
+                               }
+                               ?>
+                       </p>
+               </div>
                <?php endif; ?>
 <?php elseif ( isset($_GET['activate']) ) : ?>
-       <div id="message" class="updated fade"><p><?php _e('Plugin <strong>activated</strong>.') ?></p></div>
+       <div id="message" class="updated notice is-dismissible"><p><?php _e('Plugin <strong>activated</strong>.') ?></p></div>
 <?php elseif (isset($_GET['activate-multi'])) : ?>
-       <div id="message" class="updated fade"><p><?php _e('Selected plugins <strong>activated</strong>.'); ?></p></div>
+       <div id="message" class="updated notice is-dismissible"><p><?php _e('Selected plugins <strong>activated</strong>.'); ?></p></div>
 <?php elseif ( isset($_GET['deactivate']) ) : ?>
-       <div id="message" class="updated fade"><p><?php _e('Plugin <strong>deactivated</strong>.') ?></p></div>
+       <div id="message" class="updated notice is-dismissible"><p><?php _e('Plugin <strong>deactivated</strong>.') ?></p></div>
 <?php elseif (isset($_GET['deactivate-multi'])) : ?>
-       <div id="message" class="updated fade"><p><?php _e('Selected plugins <strong>deactivated</strong>.'); ?></p></div>
+       <div id="message" class="updated notice is-dismissible"><p><?php _e('Selected plugins <strong>deactivated</strong>.'); ?></p></div>
+<?php elseif ( 'update-selected' == $action ) : ?>
+       <div id="message" class="updated notice is-dismissible"><p><?php _e('All selected plugins are up to date.'); ?></p></div>
 <?php endif; ?>
 
 <div class="wrap">
-<h2><?php _e('Plugin Management'); ?></h2>
-<p><?php _e('Plugins extend and expand the functionality of WordPress. Once a plugin is installed, you may activate it or deactivate it here.'); ?></p>
+<h1><?php echo esc_html( $title );
+if ( ( ! is_multisite() || is_network_admin() ) && current_user_can('install_plugins') ) { ?>
+ <a href="<?php echo self_admin_url( 'plugin-install.php' ); ?>" class="page-title-action"><?php echo esc_html_x('Add New', 'plugin'); ?></a>
 <?php
-
-$all_plugins = get_plugins();
-$active_plugins = array();
-$inactive_plugins = array();
-$recent_plugins = array();
-$recently_activated = (array)get_option('recently_activated');
-
-//Clean out any plugins which were deactivated over a week ago.
-foreach( $recently_activated as $key => $time )
-       if( $time + (7*24*60*60) < time() ) //1 week
-               unset($recently_activated[ $key ]);
-if( $recently_activated != get_option('recently_activated') ) //If array changed, update it.
-       update_option('recently_activated', $recently_activated);
-
-$plugins_allowedtags = array('a' => array('href' => array(),'title' => array()),'abbr' => array('title' => array()),'acronym' => array('title' => array()),'code' => array(),'em' => array(),'strong' => array());
-
-foreach( (array)$all_plugins as $plugin_file => $plugin_data) {
-
-       // Sanitize all displayed data
-       $plugin_data['Title']       = wp_kses($plugin_data['Title'], $plugins_allowedtags);
-       $plugin_data['Version']     = wp_kses($plugin_data['Version'], $plugins_allowedtags);
-       $plugin_data['Description'] = wp_kses($plugin_data['Description'], $plugins_allowedtags);
-       $plugin_data['Author']      = wp_kses($plugin_data['Author'], $plugins_allowedtags);
-       if( ! empty($plugin_data['Author']) )
-               $plugin_data['Description'] .= ' <cite>' . sprintf( __('By %s'), $plugin_data['Author'] ) . '.</cite>';
-
-       //Filter into individual sections
-       if ( is_plugin_active($plugin_file) ) {
-               $active_plugins[ $plugin_file ] = $plugin_data;
-       } else {
-               if ( isset( $recently_activated[ $plugin_file ] ) ) //Was the plugin recently activated?
-                       $recent_plugins[ $plugin_file ] = $plugin_data;
-               else
-                       $inactive_plugins[ $plugin_file ] = $plugin_data;
-       }
 }
 
+if ( strlen( $s ) ) {
+       /* translators: %s: search keywords */
+       printf( '<span class="subtitle">' . __( 'Search results for &#8220;%s&#8221;' ) . '</span>', esc_html( urldecode( $s ) ) );
+}
 ?>
+</h1>
 
 <?php
-function print_plugins_table($plugins, $context = '') {
-?>
-<table class="widefat" id="<?php echo $context ?>-plugins-table">
-       <thead>
-       <tr>
-               <th scope="col" class="check-column"><input type="checkbox" /></th>
-               <th scope="col"><?php _e('Plugin'); ?></th>
-               <th scope="col" class="num"><?php _e('Version'); ?></th>
-               <th scope="col"><?php _e('Description'); ?></th>
-               <th scope="col" class="action-links"><?php _e('Action'); ?></th>
-       </tr>
-       </thead>
-       <tbody class="plugins">
-<?php
-
-       if( empty($plugins) ) {
-               echo '<tr>
-                       <td colspan="6">' . __('No plugins to show') . '</td>
-               </tr>';
-       }
-       foreach( (array)$plugins as $plugin_file => $plugin_data) {
-               $action_links = array();
-
-               if( 'active' == $context )
-                       $action_links[] = '<a href="' . wp_nonce_url('plugins.php?action=deactivate&amp;plugin=' . $plugin_file, 'deactivate-plugin_' . $plugin_file) . '" title="' . __('Deactivate this plugin') . '" class="delete">' . __('Deactivate') . '</a>';
-               else //Available or Recently deactivated
-                       $action_links[] = '<a href="' . wp_nonce_url('plugins.php?action=activate&amp;plugin=' . $plugin_file, 'activate-plugin_' . $plugin_file) . '" title="' . __('Activate this plugin') . '" class="edit">' . __('Activate') . '</a>';
-
-               if ( current_user_can('edit_plugins') && is_writable(WP_PLUGIN_DIR . '/' . $plugin_file) )
-                       $action_links[] = '<a href="plugin-editor.php?file=' . $plugin_file . '" title="' . __('Open this file in the Plugin Editor') . '" class="edit">' . __('Edit') . '</a>';
-
-               $action_links = apply_filters('plugin_action_links', $action_links, $plugin_file, $plugin_data, $context);
-
-               echo "
-       <tr class='$context'>
-               <th scope='row' class='check-column'><input type='checkbox' name='checked[]' value='" . attribute_escape($plugin_file) . "' /></th>
-               <td class='name'>{$plugin_data['Title']}</td>
-               <td class='vers'>{$plugin_data['Version']}</td>
-               <td class='desc'><p>{$plugin_data['Description']}</p></td>
-               <td class='togl action-links'>";  
-               if ( !empty($action_links) )
-                       echo implode(' | ', $action_links);
-               echo '</td> 
-       </tr>';
-               do_action( 'after_plugin_row', $plugin_file, $plugin_data, $context );
-       }
-?>
-       </tbody>
-</table>
-<?php 
-} //End print_plugins_table()
+/**
+ * Fires before the plugins list table is rendered.
+ *
+ * This hook also fires before the plugins list table is rendered in the Network Admin.
+ *
+ * Please note: The 'active' portion of the hook name does not refer to whether the current
+ * view is for active plugins, but rather all plugins actively-installed.
+ *
+ * @since 3.0.0
+ *
+ * @param array $plugins_all An array containing all installed plugins.
+ */
+do_action( 'pre_current_active_plugins', $plugins['all'] );
 ?>
 
-<?php if ( ! empty($active_plugins) ) : ?>
-<h3 id="currently-active"><?php _e('Currently Active Plugins') ?></h3>
-<form method="post" action="<?php echo admin_url('plugins.php') ?>">
-<?php wp_nonce_field('bulk-manage-plugins') ?>
+<?php $wp_list_table->views(); ?>
 
-<div class="tablenav">
-       <div class="alignleft">
-               <input type="submit" name="deactivate-selected" value="<?php _e('Deactivate') ?>" class="button-secondary" />
-       </div>
-</div>
-<br class="clear" />
-<?php print_plugins_table($active_plugins, 'active') ?>
+<form class="search-form search-plugins" method="get">
+<?php $wp_list_table->search_box( __( 'Search Installed Plugins' ), 'plugin' ); ?>
 </form>
 
-<p><?php printf(__('If something goes wrong with a plugin and you can&#8217;t use WordPress, delete or rename that file in the <code>%s</code> directory and it will be automatically deactivated.'), WP_PLUGIN_DIR); ?></p>
-<?php endif; ?>
-
-<?php if ( ! empty($recent_plugins) ) : ?>
-<h3 id="recent-plugins"><?php _e('Recently Active Plugins') ?></h3>
-<p><?php _e('The following plugins were recently active. When a plugin has been inactive for more than 7 days it will be moved to the Inactive plugin list.') ?></p>
-<form method="post" action="<?php echo admin_url('plugins.php') ?>">
-<?php wp_nonce_field('bulk-manage-plugins') ?>
-
-<div class="tablenav">
-       <div class="alignleft">
-               <input type="submit" name="activate-selected" value="<?php _e('Activate') ?>" class="button-secondary" />
-<?php if( current_user_can('delete_plugins') ) : ?>
-               <input type="submit" name="delete-selected" value="<?php _e('Delete') ?>" class="button-secondary" />
-<?php endif; ?>
-               <input type="submit" name="clear-recent-list" value="<?php _e('Clear List') ?>" class="button-secondary" />
-       </div>
-</div>
-<br class="clear" />
-<?php print_plugins_table($recent_plugins, 'recent') ?>
-</form>
-<?php endif; ?>
+<form method="post" id="bulk-action-form">
 
-<?php if ( ! empty($inactive_plugins) ) : ?>
-<h3 id="inactive-plugins"><?php _e('Inactive Plugins') ?></h3>
-<form method="post" action="<?php echo admin_url('plugins.php') ?>">
-<?php wp_nonce_field('bulk-manage-plugins') ?>
+<input type="hidden" name="plugin_status" value="<?php echo esc_attr($status) ?>" />
+<input type="hidden" name="paged" value="<?php echo esc_attr($page) ?>" />
 
-<div class="tablenav">
-       <div class="alignleft">
-               <input type="submit" name="activate-selected" value="<?php _e('Activate') ?>" class="button-secondary" />
-<?php if( current_user_can('delete_plugins') ) : ?>
-               <input type="submit" name="delete-selected" value="<?php _e('Delete') ?>" class="button-secondary" />
-<?php endif; ?>
-       </div>
-</div>
-<br class="clear" />
-<?php print_plugins_table($inactive_plugins, 'inactive') ?>
+<?php $wp_list_table->display(); ?>
 </form>
-<?php endif; ?>
-
-<?php if ( empty($all_plugins) ) : ?>
-<p><?php _e('You do not appear to have any plugins available at this time.') ?></p>
-<?php endif; ?>
-
-<h2><?php _e('Get More Plugins'); ?></h2>
-<p><?php _e('You can find additional plugins for your site in the <a href="http://wordpress.org/extend/plugins/">WordPress plugin directory</a>.'); ?></p>
-<p><?php printf(__('To install a plugin you generally just need to upload the plugin file into your <code>%s</code> directory. Once a plugin is uploaded, you may activate it here.'), WP_PLUGIN_DIR); ?></p>
 
+       <span class="spinner"></span>
 </div>
 
 <?php
-include('admin-footer.php');
-?>
+wp_print_request_filesystem_credentials_modal();
+wp_print_admin_notice_templates();
+wp_print_update_row_templates();
+
+include(ABSPATH . 'wp-admin/admin-footer.php');