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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.controller.restapi.filter;
import com.yahoo.component.annotation.Inject;
import com.yahoo.jdisc.Response;
import com.yahoo.jdisc.http.HttpRequest;
import com.yahoo.jdisc.http.filter.DiscFilterRequest;
import com.yahoo.jdisc.http.filter.security.base.JsonSecurityRequestFilterBase;
import com.yahoo.vespa.hosted.controller.Controller;
import com.yahoo.vespa.hosted.controller.api.role.Action;
import com.yahoo.vespa.hosted.controller.api.role.Enforcer;
import com.yahoo.vespa.hosted.controller.api.role.Role;
import com.yahoo.vespa.hosted.controller.api.role.SecurityContext;
import java.util.Optional;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* A security filter protects all controller apis.
*
* @author bjorncs
*/
public class ControllerAuthorizationFilter extends JsonSecurityRequestFilterBase {
private static final Logger log = Logger.getLogger(ControllerAuthorizationFilter.class.getName());
private final Enforcer enforcer;
@Inject
public ControllerAuthorizationFilter(Controller controller) {
this.enforcer = new Enforcer(controller.system());
}
@Override
public Optional<ErrorResponse> filter(DiscFilterRequest request) {
try {
Optional<SecurityContext> securityContext = Optional.ofNullable((SecurityContext)request.getAttribute(SecurityContext.ATTRIBUTE_NAME));
if (securityContext.isEmpty())
return Optional.of(new ErrorResponse(Response.Status.UNAUTHORIZED, "Access denied - not authenticated"));
Action action = Action.from(HttpRequest.Method.valueOf(request.getMethod()));
// Avoid expensive look-ups when request is always legal.
if (enforcer.allows(Role.everyone(), action, request.getUri()))
return Optional.empty();
Set<Role> roles = securityContext.get().roles();
if (roles.stream().anyMatch(role -> enforcer.allows(role, action, request.getUri())))
return Optional.empty();
}
catch (Exception e) {
log.log(Level.WARNING, "Exception evaluating access control: ", e);
}
return Optional.of(new ErrorResponse(Response.Status.FORBIDDEN, "Access denied"));
}
}
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