Author: markt
Date: Fri May  8 12:32:11 2015
New Revision: 1678339

URL: http://svn.apache.org/r1678339
Log:
Fix https://bz.apache.org/bugzilla/show_bug.cgi?id=54618
Add the HSTS header by default as recommended by RFC 7527

Added:
    tomcat/trunk/java/org/apache/catalina/filters/HttpHeaderSecurityFilter.java 
  (with props)
Modified:
    tomcat/trunk/conf/web.xml
    tomcat/trunk/java/org/apache/catalina/filters/Constants.java
    tomcat/trunk/java/org/apache/catalina/filters/CorsFilter.java
    tomcat/trunk/java/org/apache/catalina/filters/FilterBase.java
    tomcat/trunk/java/org/apache/catalina/filters/LocalStrings.properties
    tomcat/trunk/webapps/docs/config/filter.xml

Modified: tomcat/trunk/conf/web.xml
URL: 
http://svn.apache.org/viewvc/tomcat/trunk/conf/web.xml?rev=1678339&r1=1678338&r2=1678339&view=diff
==============================================================================
--- tomcat/trunk/conf/web.xml (original)
+++ tomcat/trunk/conf/web.xml Fri May  8 12:32:11 2015
@@ -395,6 +395,29 @@
 
   <!-- ================== Built In Filter Definitions ===================== -->
 
+  <!-- A filter that sets various security related HTTP Response headers.   -->
+  <!-- This filter supports the following initialization parameters         -->
+  <!-- (default values are in square brackets):                             -->
+  <!--                                                                      -->
+  <!--   hstsEnabled         Should the HTTP Strict Transport Security      -->
+  <!--                       (HSTS) header be added to the response? See    -->
+  <!--                       RFC 6797 for more information on HSTS. [true]  -->
+  <!--                                                                      -->
+  <!--   hstsMaxAgeSeconds   The max age value that should be used in the   -->
+  <!--                       HSTS header. Negative values will be treated   -->
+  <!--                       as zero. [0]                                   -->
+  <!--                                                                      -->
+  <!--   hstsIncludeSubDomains                                              -->
+  <!--                       Should the includeSubDomains parameter be      -->
+  <!--                       included in the HSTS header.                   -->
+  <!--                                                                      -->
+
+    <filter>
+        <filter-name>httpHeaderSecurity</filter-name>
+        
<filter-class>org.apache.catalina.filters.HttpHeaderSecurityFilter</filter-class>
+        <async-supported>true</async-supported>
+    </filter>
+
   <!-- A filter that sets character encoding that is used to decode -->
   <!-- parameters in a POST request -->
 <!--
@@ -483,6 +506,13 @@
 
   <!-- ==================== Built In Filter Mappings ====================== -->
 
+  <!-- The mapping for the HTTP header security Filter -->
+    <filter-mapping>
+        <filter-name>httpHeaderSecurity</filter-name>
+        <url-pattern>/*</url-pattern>
+        <dispatcher>REQUEST</dispatcher>
+    </filter-mapping>
+
   <!-- The mapping for the Set Character Encoding Filter -->
 <!--
     <filter-mapping>

Modified: tomcat/trunk/java/org/apache/catalina/filters/Constants.java
URL: 
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/catalina/filters/Constants.java?rev=1678339&r1=1678338&r2=1678339&view=diff
==============================================================================
--- tomcat/trunk/java/org/apache/catalina/filters/Constants.java (original)
+++ tomcat/trunk/java/org/apache/catalina/filters/Constants.java Fri May  8 
12:32:11 2015
@@ -25,8 +25,6 @@ package org.apache.catalina.filters;
  */
 public final class Constants {
 
-    public static final String Package = "org.apache.catalina.filters";
-
     public static final String CSRF_NONCE_SESSION_ATTR_NAME =
         "org.apache.catalina.filters.CSRF_NONCE";
 

Modified: tomcat/trunk/java/org/apache/catalina/filters/CorsFilter.java
URL: 
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/catalina/filters/CorsFilter.java?rev=1678339&r1=1678338&r2=1678339&view=diff
==============================================================================
--- tomcat/trunk/java/org/apache/catalina/filters/CorsFilter.java (original)
+++ tomcat/trunk/java/org/apache/catalina/filters/CorsFilter.java Fri May  8 
12:32:11 2015
@@ -79,9 +79,7 @@ import org.apache.tomcat.util.res.String
 public final class CorsFilter implements Filter {
 
     private static final Log log = LogFactory.getLog(CorsFilter.class);
-
-    private static final StringManager sm =
-            StringManager.getManager(Constants.Package);
+    private static final StringManager sm = 
StringManager.getManager(CorsFilter.class);
 
 
     /**

Modified: tomcat/trunk/java/org/apache/catalina/filters/FilterBase.java
URL: 
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/catalina/filters/FilterBase.java?rev=1678339&r1=1678338&r2=1678339&view=diff
==============================================================================
--- tomcat/trunk/java/org/apache/catalina/filters/FilterBase.java (original)
+++ tomcat/trunk/java/org/apache/catalina/filters/FilterBase.java Fri May  8 
12:32:11 2015
@@ -35,8 +35,7 @@ import org.apache.tomcat.util.res.String
  */
 public abstract class FilterBase implements Filter {
 
-    protected static final StringManager sm =
-        StringManager.getManager(Constants.Package);
+    protected static final StringManager sm = 
StringManager.getManager(FilterBase.class);
 
     protected abstract Log getLogger();
 

Added: 
tomcat/trunk/java/org/apache/catalina/filters/HttpHeaderSecurityFilter.java
URL: 
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/catalina/filters/HttpHeaderSecurityFilter.java?rev=1678339&view=auto
==============================================================================
--- tomcat/trunk/java/org/apache/catalina/filters/HttpHeaderSecurityFilter.java 
(added)
+++ tomcat/trunk/java/org/apache/catalina/filters/HttpHeaderSecurityFilter.java 
Fri May  8 12:32:11 2015
@@ -0,0 +1,124 @@
+/*
+ * 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.filters;
+
+import java.io.IOException;
+
+import javax.servlet.FilterChain;
+import javax.servlet.FilterConfig;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.http.HttpServletResponse;
+
+import org.apache.juli.logging.Log;
+import org.apache.juli.logging.LogFactory;
+
+/**
+ * Provides a single configuration point for security measures that required 
the
+ * addition of one or more HTTP headers to the response.
+ */
+public class HttpHeaderSecurityFilter extends FilterBase {
+
+    private static final Log log = 
LogFactory.getLog(HttpHeaderSecurityFilter.class);
+
+    // HSTS
+    private static final String HSTS_HEADER_NAME = "Strict-Transport-Security";
+    private boolean hstsEnabled = true;
+    private int hstsMaxAgeSeconds = 0;
+    private boolean hstsIncludeSubDomains = false;
+    private String hstsHeaderValue;
+
+
+    @Override
+    public void init(FilterConfig filterConfig) throws ServletException {
+        super.init(filterConfig);
+
+        // Build HSTS header value
+        StringBuilder hstsValue = new StringBuilder("max-age=");
+        hstsValue.append(hstsMaxAgeSeconds);
+        if (hstsIncludeSubDomains) {
+            hstsValue.append(";includeSubDomains");
+        }
+        hstsHeaderValue = hstsValue.toString();
+    }
+
+
+    @Override
+    public void doFilter(ServletRequest request, ServletResponse response,
+            FilterChain chain) throws IOException, ServletException {
+
+        if (response.isCommitted()) {
+            throw new 
ServletException(sm.getString("httpHeaderSecurityFilter.committed"));
+        }
+
+        // HSTS
+        if (hstsEnabled && request.isSecure() && response instanceof 
HttpServletResponse) {
+            ((HttpServletResponse) response).addHeader(HSTS_HEADER_NAME, 
hstsHeaderValue);
+        }
+
+        chain.doFilter(request, response);
+    }
+
+
+    @Override
+    protected Log getLogger() {
+        return log;
+    }
+
+
+    @Override
+    protected boolean isConfigProblemFatal() {
+        // This filter is security related to configuration issues always
+        // trigger a failure.
+        return true;
+    }
+
+
+    public boolean isHstsEnabled() {
+        return hstsEnabled;
+    }
+
+
+    public void setHstsEnabled(boolean hstsEnabled) {
+        this.hstsEnabled = hstsEnabled;
+    }
+
+
+    public int getHstsMaxAgeSeconds() {
+        return hstsMaxAgeSeconds;
+    }
+
+
+    public void setHstsMaxAgeSeconds(int hstsMaxAgeSeconds) {
+        if (hstsMaxAgeSeconds < 0) {
+            hstsMaxAgeSeconds = 0;
+        } else {
+            this.hstsMaxAgeSeconds = hstsMaxAgeSeconds;
+        }
+    }
+
+
+    public boolean isHstsIncludeSubDomains() {
+        return hstsIncludeSubDomains;
+    }
+
+
+    public void setHstsIncludeSubDomains(boolean hstsIncludeSubDomains) {
+        this.hstsIncludeSubDomains = hstsIncludeSubDomains;
+    }
+}

Propchange: 
tomcat/trunk/java/org/apache/catalina/filters/HttpHeaderSecurityFilter.java
------------------------------------------------------------------------------
    svn:eol-style = native

Propchange: 
tomcat/trunk/java/org/apache/catalina/filters/HttpHeaderSecurityFilter.java
------------------------------------------------------------------------------
    svn:mime-type = text/plain

Modified: tomcat/trunk/java/org/apache/catalina/filters/LocalStrings.properties
URL: 
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/catalina/filters/LocalStrings.properties?rev=1678339&r1=1678338&r2=1678339&view=diff
==============================================================================
--- tomcat/trunk/java/org/apache/catalina/filters/LocalStrings.properties 
(original)
+++ tomcat/trunk/java/org/apache/catalina/filters/LocalStrings.properties Fri 
May  8 12:32:11 2015
@@ -40,4 +40,5 @@ expiresFilter.filterInitialized=Filter i
 expiresFilter.expirationHeaderAlreadyDefined=Request "{0}" with response 
status "{1}" content-type "{2}", expiration header already defined
 expiresFilter.skippedStatusCode=Request "{0}" with response status "{1}" 
content-type "{1}", skip expiration header generation for given status
 
+httpHeaderSecurityFilter.committed=Unable to add HTTP headers since response 
is already committed on entry to the HTTP header security Filter
 remoteIpFilter.invalidLocation=Failed to modify the rewrite location [{0}] to 
use scheme [{1}] and port [{2}]
\ No newline at end of file

Modified: tomcat/trunk/webapps/docs/config/filter.xml
URL: 
http://svn.apache.org/viewvc/tomcat/trunk/webapps/docs/config/filter.xml?rev=1678339&r1=1678338&r2=1678339&view=diff
==============================================================================
--- tomcat/trunk/webapps/docs/config/filter.xml (original)
+++ tomcat/trunk/webapps/docs/config/filter.xml Fri May  8 12:32:11 2015
@@ -697,6 +697,56 @@ FINE: Request "/docs/config/manager.html
 
 </section>
 
+<section name="HTTP Header Security Filter">
+
+  <subsection name="Introduction">
+
+    <p>There are a number of HTTP headers that can be added to the response to
+    improve the security of the connection. This filter provides a mechanism 
for
+    adding those headers. Note that security related headers with more complex
+    requirements, like CORS, are implemted as separate Filters.</p>
+
+  </subsection>
+
+  <subsection name="Filter Class Name">
+
+    <p>The filter class name for the HTTP Header Security Filter is
+    <strong><code>org.apache.catalina.filters.HttpHeaderSecurityFilter</code>
+    </strong>.</p>
+
+  </subsection>
+
+  <subsection name="Initialisation parameters">
+
+    <p>The HTTP Header Security Filter supports the following initialization
+    parameters:</p>
+
+    <attributes>
+
+      <attribute name="hstsEnabled" required="false">
+        <p>Will an HTTP Strict Transport Security (HSTS) header be added to the
+        response. See <a href="http://tools.ietf.org/html/rfc6797";>RFC 6797</a>
+        for further details of HSTS. If not specified, the default value of
+        <code>true</code> will be used.</p>
+      </attribute>
+
+      <attribute name="hstsMaxAgeSeconds" required="false">
+        <p>The max age value that should be used in the HSTS header. Negative
+        values will be treated as zero. If not specified, the default value of
+        <code>0</code> will be used.</p>
+      </attribute>
+
+      <attribute name="hstsIncludeSubDomains" required="false">
+        <p>Should the includeSubDomains parameter be included in the HSTS
+        header.</p>
+      </attribute>
+
+    </attributes>
+
+  </subsection>
+
+</section>
+
 <section name="Remote Address Filter">
 
   <subsection name="Introduction">



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