Re: how to enable alias resolution in Jetty in Karaf?

[Max Spring <m2...@springdot.org>]

I ended up implementing this via a ContainerRequestFilter:

     package org.example.filters;

     import org.example.engine.Engine;

     import javax.ws.rs.container.ContainerRequestContext;
     import javax.ws.rs.container.ContainerRequestFilter;
     import javax.ws.rs.core.Response;
     import java.io.IOException;

     public class OfflineModeFilter implements ContainerRequestFilter{

         private Engine engine;

         public void setEngine(Engine engine){
             this.engine = engine;
         }

         @Override
         public void filter(ContainerRequestContext requestContext) throws IOException{
             if (engine.isOfflineMode()){
                 requestContext.abortWith(Response.status(Response.Status.SERVICE_UNAVAILABLE)
                   .entity("engine offline").build()
                 );
             }
         }
     }

...and injecting the engine via Blueprint:

     <blueprint xmlns...>

       <jaxrs:server id="restService" address="/">
         <jaxrs:providers>
           <bean class="org.example.filters.OfflineModeFilter">
             <property name="engine" ref="engineSvc"/>
           </bean>
         </jaxrs:providers>
       </jaxrs:server>

       <reference id="engineSvc" interface="org.example.engine.Engine" availability="mandatory"/>

     </blueprint>

-Max


On 02/16/2018 12:22 PM, Max Spring wrote:
> I'm still on Karaf 3.0.5 and Jetty 8.1.17.v20150415 / org.ops4j.pax.web.pax-web-jetty 3.2.6.
> 
> Is there any way to enable alias resolution (i.e. Jetty following symlinks), or do I need to updgrade to a Jetty 9.x?
> 
> The relevant places I found ([1], [2]) talk about Jetty 9 and I were unable to enable alias resolution.
> 
> Thanks!
> -Max
> 
> [1] https://www.eclipse.org/jetty/documentation/9.3.x/advanced-extras.html#default-servlet-init
> [2] https://portail.capsana.ca/doc/9.4.5.v20170502/serving-aliased-files.html
> 
> 

Re: how to enable alias resolution in Jetty in Karaf?

[Max Spring <m2...@springdot.org>]

(Re-sending it due to copy/paste screw up in my earlier reply.)

I ended up implementing this by resolving symlinks and using an HttpServletRequestWrapper.

     public class FileServlet extends DefaultServlet{

         //Bean init-method
         public void initBasePath() {
             basePath = new File(System.getProperty("http.resource.base"));
         }

         @Override
         protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{
             File canonAbsBase = new File(basePath, request.getServletPath()).getCanonicalFile();

             // this "flattens" symlinks!
             String canonAbsPathInfo = new File(canonAbsBase, request.getPathInfo()).getCanonicalPath();

             String canonPathInfo = canonAbsPathInfo.substring(canonAbsBase.toString().length());

             response.setContentType(request.getPathInfo().endsWith(".html")? "text/html" : "text/plain");

             super.doGet(
               new HttpServletRequestWrapper(request){
                   @Override public String getPathInfo(){ return canonPathInfo; }
               },
               response
             );
         }
     }

This works fine for my limited use case of having symlinks only *within* the hierarchy served out by Jetty.

-Max


On 03/12/2018 05:15 PM, Max Spring wrote:
> I ended up implementing this via a ContainerRequestFilter:
> 
>      package org.example.filters;
> 
>      import org.example.engine.Engine;
> 
>      import javax.ws.rs.container.ContainerRequestContext;
>      import javax.ws.rs.container.ContainerRequestFilter;
>      import javax.ws.rs.core.Response;
>      import java.io.IOException;
> 
>      public class OfflineModeFilter implements ContainerRequestFilter{
> 
>          private Engine engine;
> 
>          public void setEngine(Engine engine){
>              this.engine = engine;
>          }
> 
>          @Override
>          public void filter(ContainerRequestContext requestContext) throws IOException{
>              if (engine.isOfflineMode()){
>                  requestContext.abortWith(Response.status(Response.Status.SERVICE_UNAVAILABLE)
>                    .entity("engine offline").build()
>                  );
>              }
>          }
>      }
> 
> ...and injecting the engine via Blueprint:
> 
>      <blueprint xmlns...>
> 
>        <jaxrs:server id="restService" address="/">
>          <jaxrs:providers>
>            <bean class="org.example.filters.OfflineModeFilter">
>              <property name="engine" ref="engineSvc"/>
>            </bean>
>          </jaxrs:providers>
>        </jaxrs:server>
> 
>        <reference id="engineSvc" interface="org.example.engine.Engine" availability="mandatory"/>
> 
>      </blueprint>
> 
> -Max
> 
> 
> On 02/16/2018 12:22 PM, Max Spring wrote:
>> I'm still on Karaf 3.0.5 and Jetty 8.1.17.v20150415 / org.ops4j.pax.web.pax-web-jetty 3.2.6.
>>
>> Is there any way to enable alias resolution (i.e. Jetty following symlinks), or do I need to updgrade to a Jetty 9.x?
>>
>> The relevant places I found ([1], [2]) talk about Jetty 9 and I were unable to enable alias resolution.
>>
>> Thanks!
>> -Max
>>
>> [1] https://www.eclipse.org/jetty/documentation/9.3.x/advanced-extras.html#default-servlet-init
>> [2] https://portail.capsana.ca/doc/9.4.5.v20170502/serving-aliased-files.html
>>
>>
>