Changeset 25540 for trunk/src/wp-admin/includes/update.php

Timestamp:

09/21/2013 06:48:20 AM (12 years ago)

Author:

dd32

Message:

Upgrader: Perform a MD5 file verification check on the files during upgrade. This ensures that both a Partial upgrade build can be used, and that all the files were copied into place correctly.
Props pento for initial patch. Fixes #18201

File:

• trunk/src/wp-admin/includes/update.php (modified) (1 diff)

trunk/src/wp-admin/includes/update.php

@@ -88 +88 @@
 }
 
+/**
+ * Gets and caches the checksums for the given versions of WordPress
+ *
+ * @since 3.7.0
+ *
+ * @param $version string|array A single version, or an array of versions to fetch
+ *
+ * @return bool|array False on failure, otherwise the array of checksums, keyed by version
+ */
+function get_core_checksums( $version ) {
+    if ( ! is_array( $version ) )
+        $version = array( $version );
+
+    $return = array();
+
+    // Check to see if we have cached copies available, if we do, no need to request them
+    foreach ( $version as $i => $v ) {
+        if ( $checksums = get_site_transient( "core_checksums_$v" ) ) {
+            unset( $version[ $i ] );
+            $return[ $v ] = $checksums;
+        }
+    }
+
+    // We had cached copies for all of the versions!
+    if ( empty( $version ) )
+        return $return;
+
+    $url = 'http://api.wordpress.org/core/checksums/1.0/?' . http_build_query( array( 'version' => $version ), null, '&' );
+
+    if ( wp_http_supports( array( 'ssl' ) ) )
+        $url = set_url_scheme( $url, 'https' );
+
+    $options = array(
+        'timeout' => ( ( defined('DOING_CRON') && DOING_CRON ) ? 30 : 3 ),
+    );
+
+    $response = wp_remote_get( $url, $options );
+
+    if ( is_wp_error( $response ) || 200 != wp_remote_retrieve_response_code( $response ) )
+        return false;
+
+    $body = trim( wp_remote_retrieve_body( $response ) );
+    $body = json_decode( $body, true );
+
+    if ( ! is_array( $body ) || ! isset( $body['checksums'] ) || ! is_array( $body['checksums'] ) )
+        return false;
+
+    // Cache the checksums for later
+    foreach ( $version as $v ) {
+        set_site_transient( "core_checksums_$v", $body['checksums'][ $v ], HOUR_IN_SECONDS );
+        $return[ $v ] = $body['checksums'][ $v ];
+    }
+
+    // If the API didn't return anything for a version, explicitly set it's return value to false
+    foreach ( $return as $v => $r ) {
+        if ( empty( $r ) )
+            $return[ $v ] = false;
+    }
+
+    return $return;
+}
+
 function dismiss_core_update( $update ) {
     $dismissed = get_site_option( 'dismissed_update_core' );