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<?php // phpcs:ignore WordPress.Files.FileName.InvalidClassFileName
/**
 * Plugins Library
 *
 * Helper functions for installing and activating plugins.
 *
 * Used by the REST API
 *
 * @autounit api plugins
 */

require_once 'class.jetpack-automatic-install-skin.php';

/**
 * Plugins management tools.
 */
class Jetpack_Plugins {

/**
	 * Install and activate a plugin.
	 *
	 * @since 5.8.0
	 *
	 * @param string $slug Plugin slug.
	 *
	 * @return bool|WP_Error True if installation succeeded, error object otherwise.
	 */
	public static function install_and_activate_plugin( $slug ) {
		$plugin_id = self::get_plugin_id_by_slug( $slug );

if ( ! $plugin_id ) {
			$installed = self::install_plugin( $slug );
			if ( is_wp_error( $installed ) ) {
				return $installed;
			}
			$plugin_id = self::get_plugin_id_by_slug( $slug );
		} elseif ( is_plugin_active( $plugin_id ) ) {
			return true; // Already installed and active.
		}

if ( ! current_user_can( 'activate_plugins' ) ) {
			return new WP_Error( 'not_allowed', __( 'You are not allowed to activate plugins on this site.', 'jetpack' ) );
		}

$activated = activate_plugin( $plugin_id );
		if ( is_wp_error( $activated ) ) {
			return $activated;
		}

return true;
	}

/**
	 * Install a plugin.
	 *
	 * @since 5.8.0
	 *
	 * @param string $slug Plugin slug.
	 *
	 * @return bool|WP_Error True if installation succeeded, error object otherwise.
	 */
	public static function install_plugin( $slug ) {
		if ( is_multisite() && ! current_user_can( 'manage_network' ) ) {
			return new WP_Error( 'not_allowed', __( 'You are not allowed to install plugins on this site.', 'jetpack' ) );
		}

$skin     = new Jetpack_Automatic_Install_Skin();
		$upgrader = new Plugin_Upgrader( $skin );
		$zip_url  = self::generate_wordpress_org_plugin_download_link( $slug );

$result = $upgrader->install( $zip_url );

if ( is_wp_error( $result ) ) {
			return $result;
		}

$plugin     = self::get_plugin_id_by_slug( $slug );
		$error_code = 'install_error';
		if ( ! $plugin ) {
			$error = __( 'There was an error installing your plugin', 'jetpack' );
		}

if ( ! $result ) {
			$error_code = $upgrader->skin->get_main_error_code();
			$message    = $upgrader->skin->get_main_error_message();
			$error      = $message ? $message : __( 'An unknown error occurred during installation', 'jetpack' );
		}

if ( ! empty( $error ) ) {
			if ( 'download_failed' === $error_code ) {
				// For backwards compatibility: versions prior to 3.9 would return no_package instead of download_failed.
				$error_code = 'no_package';
			}

return new WP_Error( $error_code, $error, 400 );
		}

return (array) $upgrader->skin->get_upgrade_messages();
	}

/**
	 * Get WordPress.org zip download link from a plugin slug
	 *
	 * @param string $plugin_slug Plugin slug.
	 */
	protected static function generate_wordpress_org_plugin_download_link( $plugin_slug ) {
		return "https://downloads.wordpress.org/plugin/$plugin_slug.latest-stable.zip";
	}

/**
	 * Get the plugin ID (composed of the plugin slug and the name of the main plugin file) from a plugin slug.
	 *
	 * @param string $slug Plugin slug.
	 */
	public static function get_plugin_id_by_slug( $slug ) {
		// Check if get_plugins() function exists. This is required on the front end of the
		// site, since it is in a file that is normally only loaded in the admin.
		if ( ! function_exists( 'get_plugins' ) ) {
			require_once ABSPATH . 'wp-admin/includes/plugin.php';
		}

/** This filter is documented in wp-admin/includes/class-wp-plugins-list-table.php */
		$plugins = apply_filters( 'all_plugins', get_plugins() );
		if ( ! is_array( $plugins ) ) {
			return false;
		}

foreach ( $plugins as $plugin_file => $plugin_data ) {
			if ( self::get_slug_from_file_path( $plugin_file ) === $slug ) {
				return $plugin_file;
			}
		}

return false;
	}

/**
	 * Get the plugin slug from the plugin ID (composed of the plugin slug and the name of the main plugin file)
	 *
	 * @param string $plugin_file Plugin file (ID -- e.g. hello-dolly/hello.php).
	 */
	protected static function get_slug_from_file_path( $plugin_file ) {
		// Similar to get_plugin_slug() method.
		$slug = dirname( $plugin_file );
		if ( '.' === $slug ) {
			$slug = preg_replace( '/(.+)\.php$/', '$1', $plugin_file );
		}

return $slug;
	}

/**
	 * Get the activation status for a plugin.
	 *
	 * @since 8.9.0
	 *
	 * @param string $plugin_file The plugin file to check.
	 * @return string Either 'network-active', 'active' or 'inactive'.
	 */
	public static function get_plugin_status( $plugin_file ) {
		if ( is_plugin_active_for_network( $plugin_file ) ) {
			return 'network-active';
		}

if ( is_plugin_active( $plugin_file ) ) {
			return 'active';
		}

return 'inactive';
	}

/**
	 * Returns a list of all plugins in the site.
	 *
	 * @since 8.9.0
	 * @uses get_plugins()
	 *
	 * @return array
	 */
	public static function get_plugins() {
		if ( ! function_exists( 'get_plugins' ) ) {
			require_once ABSPATH . 'wp-admin/includes/plugin.php';
		}
		/** This filter is documented in wp-admin/includes/class-wp-plugins-list-table.php */
		$plugins = apply_filters( 'all_plugins', get_plugins() );

if ( is_array( $plugins ) && ! empty( $plugins ) ) {
			foreach ( $plugins as $plugin_slug => $plugin_data ) {
				$plugins[ $plugin_slug ]['active'] = in_array(
					self::get_plugin_status( $plugin_slug ),
					array( 'active', 'network-active' ),
					true
				);
			}
			return $plugins;
		}

return array();
	}
}

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