Ticket #13780: 13780-check-theme-version-on-upload.diff

wp-admin/includes/class-wp-upgrader.php

@@ -902 +902 @@
         }
 
         function check_package($source) {
-                global $wp_filesystem;
+                global $wp_filesystem, $wp_version;
 
                 if ( is_wp_error($source) )
                         return $source;
@@ -916 +916 @@
                 if ( ! file_exists( $working_directory . 'style.css' ) )
                         return new WP_Error( 'incompatible_archive', $this->strings['incompatible_archive'], __('The theme is missing the <code>style.css</code> stylesheet.') );
 
-                $info = get_file_data( $working_directory . 'style.css', array( 'Name' => 'Theme Name', 'Template' => 'Template' ) );
+                $info = get_file_data( $working_directory . 'style.css', array( 'Name' => 'Theme Name', 'Template' => 'Template', 'Requires' => 'Requires at least', ) );
 
                 if ( empty( $info['Name'] ) )
                         return new WP_Error( 'incompatible_archive', $this->strings['incompatible_archive'], __("The <code>style.css</code> stylesheet doesn't contain a valid theme header.") );
@@ -925 +925 @@
                 if ( empty( $info['Template'] ) && ! file_exists( $working_directory . 'index.php' ) )
                         return new WP_Error( 'incompatible_archive', $this->strings['incompatible_archive'], __('The theme is missing the <code>index.php</code> file.') );
 
+                // Check WordPress version requirements
+                if ( version_compare( $wp_version, $info['Requires'], '<' ) )
+                        return new WP_Error( 'incompatible_archive', $this->strings['incompatible_archive'], sprintf( __('The theme requires WordPress %s or higher. Please <a href="%s">update WordPress</a>.'), $info['Requires'], network_admin_url('update-core.php') ) );
+
                 return $source;
         }