1 files changed, 46 insertions, 0 deletions
diff --git a/lib/private/connector/sabre/copyetagheaderplugin.php b/lib/private/connector/sabre/copyetagheaderplugin.php
new file mode 100644
index 00000000000..9f5d74654cc
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+++ b/lib/private/connector/sabre/copyetagheaderplugin.php
@@ -0,0 +1,46 @@
+<?php
+
+/**
+ * ownCloud
+ *
+ * @author Vincent Petry
+ * @copyright 2015 Vincent Petry <pvince81@owncloud.com>
+ *
+ * @license AGPL3
+ */
+
+namespace OC\Connector\Sabre;
+
+use \Sabre\HTTP\RequestInterface;
+use \Sabre\HTTP\ResponseInterface;
+
+/**
+ * Copies the "Etag" header to "OC-Etag" after any request.
+ * This is a workaround for setups that automatically strip
+ * or mangle Etag headers.
+ */
+class CopyEtagHeaderPlugin extends \Sabre\DAV\ServerPlugin {
+	/**
+	 * This initializes the plugin.
+	 *
+	 * @param \Sabre\DAV\Server $server Sabre server
+	 *
+	 * @return void
+	 */
+	public function initialize(\Sabre\DAV\Server $server) {
+		$server->on('afterMethod', array($this, 'afterMethod'));
+	}
+
+	/**
+	 * After method, copy the "Etag" header to "OC-Etag" header.
+	 *
+	 * @param RequestInterface $request request
+	 * @param ResponseInterface $response response
+	 */
+	public function afterMethod(RequestInterface $request, ResponseInterface $response) {
+		$eTag = $response->getHeader('Etag');
+		if (!empty($eTag)) {
+			$response->setHeader('OC-ETag', $eTag);
+		}
+	}
+}