From a138c19e3500f95a8c431dc0a8fe05da75da4930 Mon Sep 17 00:00:00 2001
From: Colin Stewart <costdev@git.wordpress.org>
Date: Wed, 6 Sep 2023 18:28:59 +0000
Subject: [PATCH] Upgrade/Install: Check plugin compatibility during bulk
 upgrades.

Previously, bulk upgrades did not verify that a plugin package was compatible with the site's WordPress version or the server's PHP version. This could lead to incompatible updates being installed, causing various compatibility issues and errors.

This change implements the following checks:
- If available, the API response's `requires` and `requires_php` values are checked for compatibility. This saves time, diskspace, memory and file operations by failing the upgrade before the package is downloaded and unpacked.
- If the API check passes, the downloaded and unpacked package is verified using `Plugin_Upgrader::check_package()` to ensure a plugin file is present, and the plugin's "RequiresWP" and "RequiresPHP" headers are compatible, if present. This ensures that a mismatch between the API response and the plugin file's headers does not cause an incompatible plugin to be installed.

Props salcode, afragen, mukesh27, iammehedi1, zunaid321, johnbillion, SergeyBiryukov, costdev.
Fixes #59198.

git-svn-id: https://develop.svn.wordpress.org/trunk@56525 602fd350-edb4-49c9-b593-d223f7449a82
---
 .../includes/class-plugin-upgrader.php        | 68 ++++++++++++++-----
 1 file changed, 52 insertions(+), 16 deletions(-)

diff --git a/src/wp-admin/includes/class-plugin-upgrader.php b/src/wp-admin/includes/class-plugin-upgrader.php
index 0bb711f019..48eaee6390 100644
--- a/src/wp-admin/includes/class-plugin-upgrader.php
+++ b/src/wp-admin/includes/class-plugin-upgrader.php
@@ -274,6 +274,8 @@ class Plugin_Upgrader extends WP_Upgrader {
 	 * @since 2.8.0
 	 * @since 3.7.0 The `$args` parameter was added, making clearing the plugin update cache optional.
 	 *
+	 * @global string $wp_version The WordPress version string.
+	 *
 	 * @param string[] $plugins Array of paths to plugin files relative to the plugins directory.
 	 * @param array    $args {
 	 *     Optional. Other arguments for upgrading several plugins at once.
@@ -283,6 +285,8 @@ class Plugin_Upgrader extends WP_Upgrader {
 	 * @return array|false An array of results indexed by plugin file, or false if unable to connect to the filesystem.
 	 */
 	public function bulk_upgrade( $plugins, $args = array() ) {
+		global $wp_version;
+
 		$defaults    = array(
 			'clear_update_cache' => true,
 		);
@@ -343,23 +347,55 @@ class Plugin_Upgrader extends WP_Upgrader {
 
 			$this->skin->plugin_active = is_plugin_active( $plugin );
 
-			$result = $this->run(
-				array(
-					'package'           => $r->package,
-					'destination'       => WP_PLUGIN_DIR,
-					'clear_destination' => true,
-					'clear_working'     => true,
-					'is_multi'          => true,
-					'hook_extra'        => array(
-						'plugin'      => $plugin,
-						'temp_backup' => array(
-							'slug' => dirname( $plugin ),
-							'src'  => WP_PLUGIN_DIR,
-							'dir'  => 'plugins',
+			if ( isset( $r->requires ) && ! is_wp_version_compatible( $r->requires ) ) {
+				$result = new WP_Error(
+					'incompatible_wp_required_version',
+					sprintf(
+						/* translators: 1: Current WordPress version, 2: WordPress version required by the new plugin version. */
+						__( 'Your WordPress version is %1$s, however the new plugin version requires %2$s.' ),
+						$wp_version,
+						$r->requires
+					)
+				);
+
+				$this->skin->before( $result );
+				$this->skin->error( $result );
+				$this->skin->after();
+			} elseif ( isset( $r->requires_php ) && ! is_php_version_compatible( $r->requires_php ) ) {
+				$result = new WP_Error(
+					'incompatible_php_required_version',
+					sprintf(
+						/* translators: 1: Current PHP version, 2: PHP version required by the new plugin version. */
+						__( 'The PHP version on your server is %1$s, however the new plugin version requires %2$s.' ),
+						PHP_VERSION,
+						$r->requires_php
+					)
+				);
+
+				$this->skin->before( $result );
+				$this->skin->error( $result );
+				$this->skin->after();
+			} else {
+				add_filter( 'upgrader_source_selection', array( $this, 'check_package' ) );
+				$result = $this->run(
+					array(
+						'package'           => $r->package,
+						'destination'       => WP_PLUGIN_DIR,
+						'clear_destination' => true,
+						'clear_working'     => true,
+						'is_multi'          => true,
+						'hook_extra'        => array(
+							'plugin'      => $plugin,
+							'temp_backup' => array(
+								'slug' => dirname( $plugin ),
+								'src'  => WP_PLUGIN_DIR,
+								'dir'  => 'plugins',
+							),
 						),
-					),
-				)
-			);
+					)
+				);
+				remove_filter( 'upgrader_source_selection', array( $this, 'check_package' ) );
+			}
 
 			$results[ $plugin ] = $result;