1<?php
  2/**
  3 * Install plugin administration panel.
  4 *
  5 * @package WordPress
  6 * @subpackage Administration
  7 */
  8// TODO: Route this page via a specific iframe handler instead of the do_action below.
  9if ( ! defined( 'IFRAME_REQUEST' ) && isset( $_GET['tab'] ) && ( 'plugin-information' === $_GET['tab'] ) ) {
 10	define( 'IFRAME_REQUEST', true );
 11}
 12
 13/**
 14 * WordPress Administration Bootstrap.
 15 */
 16require_once __DIR__ . '/admin.php';
 17
 18if ( ! current_user_can( 'install_plugins' ) ) {
 19	wp_die( __( 'Sorry, you are not allowed to install plugins on this site.' ) );
 20}
 21
 22if ( is_multisite() && ! is_network_admin() ) {
 23	wp_redirect( network_admin_url( 'plugin-install.php' ) );
 24	exit;
 25}
 26
 27$wp_list_table = _get_list_table( 'WP_Plugin_Install_List_Table' );
 28$pagenum       = $wp_list_table->get_pagenum();
 29
 30if ( ! empty( $_REQUEST['_wp_http_referer'] ) ) {
 31	$location = remove_query_arg( '_wp_http_referer', wp_unslash( $_SERVER['REQUEST_URI'] ) );
 32
 33	if ( ! empty( $_REQUEST['paged'] ) ) {
 34		$location = add_query_arg( 'paged', (int) $_REQUEST['paged'], $location );
 35	}
 36
 37	wp_redirect( $location );
 38	exit;
 39}
 40
 41$wp_list_table->prepare_items();
 42
 43$total_pages = $wp_list_table->get_pagination_arg( 'total_pages' );
 44
 45if ( $pagenum > $total_pages && $total_pages > 0 ) {
 46	wp_redirect( add_query_arg( 'paged', $total_pages ) );
 47	exit;
 48}
 49
 50// Used in the HTML title tag.
 51$title       = __( 'Add Plugins' );
 52$parent_file = 'plugins.php';
 53
 54wp_enqueue_script( 'plugin-install' );
 55if ( 'plugin-information' !== $tab ) {
 56	add_thickbox();
 57}
 58
 59$body_id = $tab;
 60
 61wp_enqueue_script( 'updates' );
 62
 63/**
 64 * Fires before each tab on the Install Plugins screen is loaded.
 65 *
 66 * The dynamic portion of the hook name, `$tab`, allows for targeting
 67 * individual tabs.
 68 *
 69 * Possible hook names include:
 70 *
 71 *  - `install_plugins_pre_beta`
 72 *  - `install_plugins_pre_favorites`
 73 *  - `install_plugins_pre_featured`
 74 *  - `install_plugins_pre_plugin-information`
 75 *  - `install_plugins_pre_popular`
 76 *  - `install_plugins_pre_recommended`
 77 *  - `install_plugins_pre_search`
 78 *  - `install_plugins_pre_upload`
 79 *
 80 * @since 2.7.0
 81 */
 82do_action( "install_plugins_pre_{$tab}" );
 83
 84/*
 85 * Call the pre upload action on every non-upload plugin installation screen
 86 * because the form is always displayed on these screens.
 87 */
 88if ( 'upload' !== $tab ) {
 89	/** This action is documented in wp-admin/plugin-install.php */
 90	do_action( 'install_plugins_pre_upload' );
 91}
 92
 93get_current_screen()->add_help_tab(
 94	array(
 95		'id'      => 'overview',
 96		'title'   => __( 'Overview' ),
 97		'content' =>
 98				'<p>' . sprintf(
 99					/* translators: %s: https://wordpress.org/plugins/ */
100					__( 'Plugins hook into WordPress to extend its functionality with custom features. Plugins are developed independently from the core WordPress application by thousands of developers all over the world. All plugins in the official <a href="%s">WordPress Plugin Directory</a> are compatible with the license WordPress uses.' ),
101					__( 'https://wordpress.org/plugins/' )
102				) . '</p>' .
103				'<p>' . __( 'You can find new plugins to install by searching or browsing the directory right here in your own Plugins section.' ) . ' <span id="live-search-desc" class="hide-if-no-js">' . __( 'The search results will be updated as you type.' ) . '</span></p>',
104
105	)
106);
107get_current_screen()->add_help_tab(
108	array(
109		'id'      => 'adding-plugins',
110		'title'   => __( 'Adding Plugins' ),
111		'content' =>
112				'<p>' . __( 'If you know what you are looking for, Search is your best bet. The Search screen has options to search the WordPress Plugin Directory for a particular Term, Author, or Tag. You can also search the directory by selecting popular tags. Tags in larger type mean more plugins have been labeled with that tag.' ) . '</p>' .
113				'<p>' . __( 'If you just want to get an idea of what&#8217;s available, you can browse Featured and Popular plugins by using the links above the plugins list. These sections rotate regularly.' ) . '</p>' .
114				'<p>' . __( 'You can also browse a user&#8217;s favorite plugins, by using the Favorites link above the plugins list and entering their WordPress.org username.' ) . '</p>' .
115				'<p>' . __( 'If you want to install a plugin that you&#8217;ve downloaded elsewhere, click the Upload Plugin button above the plugins list. You will be prompted to upload the .zip package, and once uploaded, you can activate the new plugin.' ) . '</p>',
116	)
117);
118
119get_current_screen()->set_help_sidebar(
120	'<p><strong>' . __( 'For more information:' ) . '</strong></p>' .
121	'<p>' . __( '<a href="https://wordpress.org/documentation/article/plugins-add-new-screen/">Documentation on Installing Plugins</a>' ) . '</p>' .
122	'<p>' . __( '<a href="https://wordpress.org/support/forums/">Support forums</a>' ) . '</p>'
123);
124
125get_current_screen()->set_screen_reader_content(
126	array(
127		'heading_views'      => __( 'Filter plugins list' ),
128		'heading_pagination' => __( 'Plugins list navigation' ),
129		'heading_list'       => __( 'Plugins list' ),
130	)
131);
132
133/**
134 * WordPress Administration Template Header.
135 */
136require_once ABSPATH . 'wp-admin/admin-header.php';
137
138WP_Plugin_Dependencies::initialize();
139WP_Plugin_Dependencies::display_admin_notice_for_unmet_dependencies();
140WP_Plugin_Dependencies::display_admin_notice_for_circular_dependencies();
141?>
142<div class="wrap <?php echo esc_attr( "plugin-install-tab-$tab" ); ?>">
143<h1 class="wp-heading-inline">
144<?php
145echo esc_html( $title );
146?>
147</h1>
148
149<?php
150if ( ! empty( $tabs['upload'] ) && current_user_can( 'upload_plugins' ) ) {
151	printf(
152		' <a href="%s" class="upload-view-toggle page-title-action"><span class="upload">%s</span><span class="browse">%s</span></a>',
153		( 'upload' === $tab ) ? self_admin_url( 'plugin-install.php' ) : self_admin_url( 'plugin-install.php?tab=upload' ),
154		__( 'Upload Plugin' ),
155		__( 'Browse Plugins' )
156	);
157}
158?>
159
160<hr class="wp-header-end">
161
162<?php
163/*
164 * Output the upload plugin form on every non-upload plugin installation screen, so it can be
165 * displayed via JavaScript rather then opening up the devoted upload plugin page.
166 */
167if ( 'upload' !== $tab ) {
168	?>
169	<div class="upload-plugin-wrap">
170		<?php
171		/** This action is documented in wp-admin/plugin-install.php */
172		do_action( 'install_plugins_upload' );
173		?>
174	</div>
175	<?php
176	$wp_list_table->views();
177}
178
179/**
180 * Fires after the plugins list table in each tab of the Install Plugins screen.
181 *
182 * The dynamic portion of the hook name, `$tab`, allows for targeting
183 * individual tabs.
184 *
185 * Possible hook names include:
186 *
187 *  - `install_plugins_beta`
188 *  - `install_plugins_favorites`
189 *  - `install_plugins_featured`
190 *  - `install_plugins_plugin-information`
191 *  - `install_plugins_popular`
192 *  - `install_plugins_recommended`
193 *  - `install_plugins_search`
194 *  - `install_plugins_upload`
195 *
196 * @since 2.7.0
197 *
198 * @param int $paged The current page number of the plugins list table.
199 */
200do_action( "install_plugins_{$tab}", $paged );
201?>
202
203	<span class="spinner"></span>
204</div>
205
206<?php
207wp_print_request_filesystem_credentials_modal();
208wp_print_admin_notice_templates();
209
210/**
211 * WordPress Administration Template Footer.
212 */
213require_once ABSPATH . 'wp-admin/admin-footer.php';
214