How to use the PermissionManager in a Confluence Plugin Rest Module
Asked by xeemed:

I tried to use the (autowired) PermissionManager in a Confluence Rest Module as follows:

```

ConfluenceUser confluenceUser = AuthenticatedUserThreadLocal.get();
if(!permissionManager.isConfluenceAdministrator(confluenceUser)) {
    throw....
}
```

If the user is not logged-in the exception is thrown and everything is fine but if the user is logged-in and has admin permissions I get a NullPointerException in the isConfluenceAdministrator method. The user object seems to be fine (and not NULL). The code is within a POST Method. I send the request from a custom settings page (location: system.admin).


Answers:
author: Hasnae
body: This is how I build rest resources in plugins, the following shows how to include the PermissionManager

```
package com.atlassian.confluence.community.rest;

import com.atlassian.annotations.security.XsrfProtectionExcluded;
import com.atlassian.confluence.security.PermissionManager;
import com.atlassian.confluence.user.AuthenticatedUserThreadLocal;
import com.atlassian.confluence.user.ConfluenceUser;
import com.atlassian.plugin.spring.scanner.annotation.imports.ComponentImport;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Response;

import static java.util.Collections.singletonMap;

@Path("/sample")
public class SampleResource {

    private final PermissionManager permissionManager;

    public SampleResource(final @ComponentImport PermissionManager permissionManager) {
        this.permissionManager = permissionManager;
    }

    @GET
    @Produces("application/json")
    @XsrfProtectionExcluded
    public Response get() {
        final ConfluenceUser currentUser = AuthenticatedUserThreadLocal.get();
        if (!permissionManager.isConfluenceAdministrator(currentUser)) {
            return Response.status(Response.Status.FORBIDDEN).build();
        }
        return Response.ok(singletonMap("username", currentUser.getName())).build();
    }
}
```

and has the following package imports on the pom file definition

```
<Import-Package>
    com.atlassian.annotations.security,
    com.atlassian.confluence.security,
    com.atlassian.confluence.user,
    com.atlassian.user,
    javax.ws.rs,
    javax.ws.rs.core,
    org.springframework.osgi.*;resolution:="optional",
    org.eclipse.gemini.blueprint.*;resolution:="optional"
</Import-Package>
```

Hope this helps

comments: author: xeemed
body: great! this works, thanks a lot. But i still need the following entry in the **META-INF/spring/plugin-context.xml**file:

```
<osgi:reference id="permissionManager" interface="com.atlassian.confluence.security.PermissionManager"/>
```

Same for you?


author: Hasnae
body: Ah right; indeed !

However I am using atlassian spring scanner, so my **plugin-context.xml** looks a bit different.

You can find the whole plugin setup here <https://bitbucket.org/viqueen/confluence-community/>


author: Steven F Behnke
body: This would likely be better asked at community.developer.atlassian.com.

I'm not sure why that method would throw an NPE because the javadoc doesn't state that it throws an NPE under desirable circumstances.


Tags: confluence-app

developer

permission

rest