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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.jdisc.http.server.jetty;
import com.yahoo.container.jdisc.RequestView;
import com.yahoo.container.jdisc.utils.CapabilityRequiringRequestHandler;
import com.yahoo.jdisc.Request;
import com.yahoo.jdisc.ResourceReference;
import com.yahoo.jdisc.Response;
import com.yahoo.jdisc.handler.ContentChannel;
import com.yahoo.jdisc.handler.DelegatedRequestHandler;
import com.yahoo.jdisc.handler.RequestHandler;
import com.yahoo.jdisc.handler.ResponseHandler;
import com.yahoo.jdisc.http.HttpRequest;
import com.yahoo.jdisc.http.HttpResponse;
import com.yahoo.security.tls.MissingCapabilitiesException;
import com.yahoo.security.tls.TransportSecurityUtils;
import com.yahoo.slime.Slime;
import com.yahoo.slime.SlimeUtils;
import javax.net.ssl.SSLSession;
import java.net.URI;
import java.nio.ByteBuffer;
import java.util.Optional;
import static com.yahoo.yolean.Exceptions.uncheck;
/**
* Request handler wrapper that enforces required capabilities as specified by underlying {@link CapabilityRequiringRequestHandler}.
*
* @author bjorncs
*/
class CapabilityEnforcingRequestHandler implements DelegatedRequestHandler {
private final RequestHandler wrapped;
CapabilityEnforcingRequestHandler(RequestHandler wrapped) { this.wrapped = wrapped; }
@Override
public ContentChannel handleRequest(Request req, ResponseHandler responseHandler) {
var capabilityRequiringHandler =
DelegatedRequestHandler.resolve(CapabilityRequiringRequestHandler.class, wrapped).orElse(null);
var requiredCapabilities = capabilityRequiringHandler != null
? capabilityRequiringHandler.requiredCapabilities(new View(req))
: CapabilityRequiringRequestHandler.DEFAULT_REQUIRED_CAPABILITY.toCapabilitySet();
var authCtx = Optional.ofNullable(req.context().get(RequestUtils.JDISC_REQUEST_SSLSESSION))
.flatMap(s -> TransportSecurityUtils.getConnectionAuthContext((SSLSession) s))
.orElse(null);
// Connection auth context will not be available if handler is bound to:
// 1) server with custom TLS configuration.
// 2) server without TLS (http)
if (authCtx != null) {
var peer = Optional.ofNullable(((HttpRequest)req).getRemoteAddress())
.map(Object::toString).orElse("<unknown>");
String method = ((HttpRequest) req).getMethod().name();
try {
authCtx.verifyCapabilities(requiredCapabilities, method, req.getUri().getPath(), peer);
} catch (MissingCapabilitiesException e) {
int code = HttpResponse.Status.FORBIDDEN;
var resp = new Response(code);
resp.headers().add("Content-Type", "application/json");
ContentChannel ch = responseHandler.handleResponse(resp);
var slime = new Slime();
var root = slime.setObject();
root.setString("error-code", Integer.toString(code));
root.setString("message", "Missing required capabilities");
ch.write(ByteBuffer.wrap(uncheck(() -> SlimeUtils.toJsonBytes(slime))), null);
ch.close(null);
return null;
}
}
return wrapped.handleRequest(req, responseHandler);
}
@Override public void release() { wrapped.release(); }
@Override public RequestHandler getDelegate() { return wrapped; }
@Override public void handleTimeout(Request request, ResponseHandler handler) { wrapped.handleRequest(request, handler); }
@Override public ResourceReference refer() { return wrapped.refer(); }
@Override public ResourceReference refer(Object context) { return wrapped.refer(context); }
private static class View implements RequestView {
private final HttpRequest req;
View(Request req) { this.req = (HttpRequest) req; }
@Override public HttpRequest.Method method() { return req.getMethod(); }
@Override public URI uri() { return req.getUri(); }
}
}
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