Prep for custom error pages

apps/jetty/java/src/net/i2p/servlet/I2PErrorHandler.java

@@ -1,16 +1,31 @@
 package net.i2p.servlet;
 
-import org.eclipse.jetty.ee8.nested.ErrorHandler;
+import java.io.File;
+
+import org.eclipse.jetty.ee8.servlet.ErrorPageErrorHandler;
+
+import net.i2p.I2PAppContext;
 
 /**
  *  Customize the error page.
  *
  *  @since Jetty 12
  */
-public class I2PErrorHandler extends ErrorHandler
+public class I2PErrorHandler extends ErrorPageErrorHandler
 {
+    private final File _docroot;
+
     public I2PErrorHandler() {
+        this(new File(I2PAppContext.getGlobalContext().getConfigDir(), "eepsite/docroot"));
+    }
+
+    public I2PErrorHandler(String docroot) {
+        this(new File(docroot));
+    }
+
+    public I2PErrorHandler(File docroot) {
         super();
+        _docroot = docroot;
         setShowServlet(false);
         setShowStacks(false);
     }

installer/resources/eepsite/contexts/base-context.xml

@@ -9,8 +9,11 @@ to serve static html files and images.
 -->
 
 <Configure class="org.eclipse.jetty.ee8.servlet.ServletContextHandler">
+  <New id="baseroot" class="java.lang.String">
+    <Arg>./eepsite/docroot</Arg>
+  </New>
   <Set name="contextPath">/</Set>
-  <Set name="baseResourceAsString">./eepsite/docroot/</Set>
+  <Set name="baseResourceAsString"><Ref refid="baseroot" /></Set>
   <Call name="setInitParameter">
     <Arg>org.eclipse.jetty.servlet.Default.cacheControl</Arg>
     <Arg>max-age=3600,public</Arg>
@@ -26,7 +29,9 @@ to serve static html files and images.
   </Call>
   <Call name="setErrorHandler">
     <Arg>
-      <New class="net.i2p.servlet.I2PErrorHandler" />
+      <New class="net.i2p.servlet.I2PErrorHandler">
+        <Arg><Ref refid="baseroot" /></Arg>
+      </New>
     </Arg>
   </Call>
 </Configure>

installer/resources/eepsite/contexts/cgi-context.xml

@@ -32,13 +32,11 @@
 -->
 
 <Configure class="org.eclipse.jetty.server.handler.ContextHandler">
-  <New id="root" class="java.lang.String">
+  <New id="cgiroot" class="java.lang.String">
     <Arg>./eepsite/cgi-bin</Arg>
   </New>
-
   <Set name="contextPath">/cgi-bin</Set>
-  <Set name="baseResourceAsString"><Ref refid="root" /></Set>
-
+  <Set name="baseResourceAsString"><Ref refid="cgiroot" /></Set>
   <Set name="handler">
     <New class="org.eclipse.jetty.server.handler.PathMappingsHandler">
       <Call name="addMapping">
@@ -50,7 +48,7 @@
             <Arg>(https?)://([^/]+)(.*)</Arg>
             <!-- host:port ignored since if using a domain socket, but argument must be here -->
             <Arg>http://localhost:9000$3</Arg>
-            <Arg><Ref refid="root" /></Arg>
+            <Arg><Ref refid="cgiroot" /></Arg>
 
             <Set name="scriptPattern"><Call class="java.util.regex.Pattern" name="compile"><Arg>/cgi-bin(.+)</Arg></Call></Set>
             <Set name="fastCGISecure">false</Set>