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Plugin_Upgrader::check_package( string $source )

Check a source package to be sure it contains a plugin.

Description

This function is added to the ‘upgrader_source_selection’ filter by Plugin_Upgrader::install().

Parameters

$source

(string) (Required) The path to the downloaded package source.

Return

(string|WP_Error) The source as passed, or a WP_Error object if no plugins were found.

Source

File: wp-admin/includes/class-plugin-upgrader.php

public function check_package( $source ) {
		global $wp_filesystem;

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

		$working_directory = str_replace( $wp_filesystem->wp_content_dir(), trailingslashit( WP_CONTENT_DIR ), $source );
		if ( ! is_dir( $working_directory ) ) { // Sanity check, if the above fails, let's not prevent installation.
			return $source;
		}

		// Check the folder contains at least 1 valid plugin.
		$plugins_found = false;
		$files         = glob( $working_directory . '*.php' );
		if ( $files ) {
			foreach ( $files as $file ) {
				$info = get_plugin_data( $file, false, false );
				if ( ! empty( $info['Name'] ) ) {
					$plugins_found = true;
					break;
				}
			}
		}

		if ( ! $plugins_found ) {
			return new WP_Error( 'incompatible_archive_no_plugins', $this->strings['incompatible_archive'], __( 'No valid plugins were found.' ) );
		}

		return $source;
	}

Changelog

Version Description
3.3.0 Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/classes/plugin_upgrader/check_package