From: markt <markt@13f79535-47bb-0310-9956-ffa450edef68>
Date: Sat, 7 Jun 2008 14:34:36 +0000 (+0000)
Subject: Add a new valve that works-around the broken MS WedDAV client.
X-Git-Url: https://git.internetallee.de/?a=commitdiff_plain;h=c4d242e8513a7376a6a11a443bb55a9a4e0faa47;p=tomcat7.0

Add a new valve that works-around the broken MS WedDAV client.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@664345 13f79535-47bb-0310-9956-ffa450edef68
---

diff --git a/java/org/apache/catalina/valves/WebdavFixValve.java b/java/org/apache/catalina/valves/WebdavFixValve.java
new file mode 100644
index 000000000..3b340f2c5
--- /dev/null
+++ b/java/org/apache/catalina/valves/WebdavFixValve.java
@@ -0,0 +1,78 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.catalina.valves;
+
+import java.io.IOException;
+
+import javax.servlet.ServletException;
+
+import org.apache.catalina.valves.ValveBase;
+import org.apache.catalina.connector.Request;
+import org.apache.catalina.connector.Response;
+
+/**
+ * Valve that attempts to force MS WebDAV clients connecting on port 80 to use
+ * a WebDAV client that actually works. Other workarounds that might help
+ * include:
+ * <ul>
+ *   <li>Specifing the port, even if it is port 80, when trying to connect.</li>
+ *   <li>Canceling the first authentication dialog box and then trying to
+ *       reconnect.</li>
+ * </ul>
+ * To use this valve add the following <code>&lt;Valve
+ * className="org.apache.catalina.valves.MicrosoftWebdavFixValve" /&gt;</code>
+ * to your <code>Engine</code>, <code>Host</code> or <code>Context</code> as
+ * required. Normally, this valve would be used at the <code>Context</code>
+ * level.
+ *
+ * @version $Revision: 420067 $, $Date: 2006-07-08 09:16:58 +0200 (sub, 08 srp 2006) $
+ */
+
+public class WebdavFixValve
+    extends ValveBase {
+
+    /**
+     * Check for the broken MS WebDAV client and if detected issue a re-direct
+     * that hopefully will cause the non-broken client to be used.
+     */
+    public void invoke(Request request, Response response)
+        throws IOException, ServletException {
+
+        String ua = request.getHeader("User-Agent");
+        if (ua != null && ua.contains("MiniRedir")) {
+            response.sendRedirect(buildRedirect(request));
+        } else {
+            getNext().invoke(request, response);
+        }
+    }
+
+    private String buildRedirect(Request request) {
+        StringBuffer location =
+            new StringBuffer(request.getRequestURL().length());
+        location.append(request.getScheme());
+        location.append("://");
+        location.append(request.getHost().getName());
+        location.append(':');
+        // If we include the port, even if it is 80, then MS clients will use
+        // a WebDAV client that works rather than the MiniRedir that has
+        // problems with BASIC authentication
+        location.append(request.getServerPort());
+        location.append(request.getRequestURI());
+        return location.toString();
+    }
+}