148 lines
4.3 KiB
Java
148 lines
4.3 KiB
Java
package org.gcube.smartgears.handlers.application.request;
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import static org.gcube.smartgears.handlers.application.request.RequestError.application_failed_error;
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import static org.gcube.smartgears.handlers.application.request.RequestError.application_unavailable_error;
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import static org.gcube.smartgears.handlers.application.request.RequestError.invalid_request_error;
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import java.util.Objects;
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import java.util.Set;
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import org.gcube.common.security.ContextBean;
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import org.gcube.common.security.ContextBean.Type;
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import org.gcube.common.security.providers.SecretManagerProvider;
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import org.gcube.common.security.secrets.Secret;
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import org.gcube.smartgears.Constants;
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import org.gcube.smartgears.configuration.Mode;
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import org.gcube.smartgears.configuration.container.ContainerConfiguration;
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import org.gcube.smartgears.context.application.ApplicationContext;
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import org.gcube.smartgears.handlers.application.RequestEvent;
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import org.gcube.smartgears.handlers.application.RequestHandler;
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import org.gcube.smartgears.handlers.application.ResponseEvent;
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import org.gcube.smartgears.security.secrets.SecretFactory;
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import org.gcube.smartgears.security.secrets.exceptions.SecretNotFoundException;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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public class RequestValidator extends RequestHandler {
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private static Logger log = LoggerFactory.getLogger(RequestValidator.class);
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private ApplicationContext appContext;
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@Override
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public String getName() {
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return Constants.request_validation;
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}
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@Override
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public void handleRequest(RequestEvent call) {
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log.trace("executing request validator ON REQUEST");
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appContext = call.context();
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SecretManagerProvider.set(getSecret(call));
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validateAgainstLifecycle(call);
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rejectUnauthorizedCalls(call);
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if (appContext.container().configuration().mode()!=Mode.offline) {
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validateScopeCall();
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validatePolicy(call);
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}
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}
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@Override
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public void handleResponse(ResponseEvent e) {
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log.debug("resetting all the Thread local for this call.");
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SecretManagerProvider.reset();
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}
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private void validateAgainstLifecycle(RequestEvent call) {
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switch(appContext.lifecycle().state()) {
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case stopped :
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application_unavailable_error.fire(); break;
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case failed:
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application_failed_error.fire(); break;
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default:
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//nothing to do, but avoids warnings
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}
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}
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private void validateScopeCall() {
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String context = SecretManagerProvider.get().getContext();
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if (context == null) {
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log.warn("rejecting unscoped call to {}",appContext.name());
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invalid_request_error.fire("call is unscoped");
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}
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ContextBean bean = new ContextBean(context);
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ContainerConfiguration conf = appContext.container().configuration();
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Set<String> allowedContexts =appContext.authorizationProvider().getContexts();
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if (!allowedContexts.contains(context) &&
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!(conf.authorizeChildrenContext() && bean.is(Type.VRE)
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&& allowedContexts.contains(bean.enclosingScope().toString()) ) ) {
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log.warn("rejecting call to {} in invalid context {}, allowed context are {}",appContext.name(),context,allowedContexts);
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invalid_request_error.fire(appContext.name()+" cannot be called in scope "+context);
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}
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}
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private void rejectUnauthorizedCalls(RequestEvent call){
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Secret secret = SecretManagerProvider.get();
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if (secret == null){
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log.warn("rejecting call to {}, authorization required",appContext.name());
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RequestError.request_not_authorized_error.fire(appContext.name()+": authorization required");
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}
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}
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@Override
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public String toString() {
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return getName();
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}
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private void validatePolicy(RequestEvent call){
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//TODO: must be re-thought
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}
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private Secret getSecret(RequestEvent call){
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Secret secret = null;
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for (SecretFactory<? extends Secret> factory: call.context().allowedSecretFactories()) {
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try {
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secret = factory.create(call.request());
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break;
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} catch (SecretNotFoundException e) {
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log.info("authorization for secret {} not found", factory.getSecretClass().getName());
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} catch (Throwable t) {
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log.warn("generic error creating secret {}", factory.getSecretClass().getName(), t);
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}
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}
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if (Objects.isNull(secret))
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RequestError.request_not_authorized_error.fire("call not authorized");
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if (!secret.isValid())
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RequestError.request_not_authorized_error.fire("authorization with secret "+secret.getClass().getSimpleName()+" is not valid ");
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return secret;
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}
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}
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