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/*
* Copyright (c) 2017 Michael Krotscheck
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy
* of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.krotscheck.kangaroo.authz.admin.v1.resource;
import net.krotscheck.kangaroo.authz.admin.v1.exception.EntityRequiredException;
import net.krotscheck.kangaroo.authz.admin.v1.servlet.Config;
import net.krotscheck.kangaroo.authz.admin.v1.servlet.ServletConfigFactory;
import net.krotscheck.kangaroo.authz.common.database.entity.AbstractAuthzEntity;
import net.krotscheck.kangaroo.authz.common.database.entity.Application;
import net.krotscheck.kangaroo.authz.common.database.entity.OAuthToken;
import net.krotscheck.kangaroo.authz.common.database.entity.User;
import net.krotscheck.kangaroo.authz.oauth2.exception.RFC6749.InvalidScopeException;
import net.krotscheck.kangaroo.common.hibernate.entity.AbstractEntity;
import net.krotscheck.kangaroo.common.hibernate.id.IdUtil;
import net.krotscheck.kangaroo.common.hibernate.id.MalformedIdException;
import net.krotscheck.kangaroo.common.response.ListResponseBuilder;
import org.apache.commons.configuration.Configuration;
import org.glassfish.jersey.internal.inject.InjectionManager;
import org.hibernate.Session;
import org.hibernate.search.FullTextQuery;
import org.hibernate.search.FullTextSession;
import org.hibernate.search.SearchFactory;
import javax.inject.Inject;
import javax.inject.Named;
import javax.ws.rs.BadRequestException;
import javax.ws.rs.NotFoundException;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.SecurityContext;
import javax.ws.rs.core.UriInfo;
import java.math.BigInteger;
/**
* Abstract implementation of our common services.
*
* @author Michael Krotscheck
*/
public abstract class AbstractService {
/**
* injection manager.
*/
@Inject
private InjectionManager injector;
/**
* Servlet Configuration.
*/
@Inject
@Named(ServletConfigFactory.GROUP_NAME)
private Configuration config;
/**
* Hibernate session.
*/
@Inject
private Session session;
/**
* The hibernate search factory.
*/
@Inject
private SearchFactory searchFactory;
/**
* The hibernate fulltext session.
*/
@Inject
private FullTextSession fullTextSession;
/**
* The Security context.
*/
@Inject
private SecurityContext securityContext;
/**
* The URI info for this request.
*/
@Inject
private UriInfo uriInfo;
/**
* Retrieve the injector for this context.
*
* @return The locator.
*/
public final InjectionManager getInjector() {
return injector;
}
/**
* Set (via injection, usually) the injector for this resource.
*
* @param injector The injector.
*/
public final void setInjector(final InjectionManager injector) {
this.injector = injector;
}
/**
* Get the URI info for the current request.
*
* @return The URIInfo instance.
*/
public final UriInfo getUriInfo() {
return uriInfo;
}
/**
* Set the URI info instance for the current request.
*
* @param uriInfo The new URIInfo instance.
*/
public final void setUriInfo(final UriInfo uriInfo) {
this.uriInfo = uriInfo;
}
/**
* Get the session.
*
* @return The injected session.
*/
public final Session getSession() {
return session;
}
/**
* Set the session.
*
* @param session The session.
*/
public final void setSession(final Session session) {
this.session = session;
}
/**
* Retrieve the search factory.
*
* @return The injected search factory.
*/
public final SearchFactory getSearchFactory() {
return searchFactory;
}
/**
* Set an instance of the search factory.
*
* @param searchFactory The search factory.
*/
public final void setSearchFactory(final SearchFactory searchFactory) {
this.searchFactory = searchFactory;
}
/**
* Get the full text search session.
*
* @return The injected lucene session.
*/
public final FullTextSession getFullTextSession() {
return fullTextSession;
}
/**
* Set the full text search session.
*
* @param fullTextSession The FTSession.
*/
public final void setFullTextSession(
final FullTextSession fullTextSession) {
this.fullTextSession = fullTextSession;
}
/**
* Get the configuration.
*
* @return A configuration!
*/
public final Configuration getConfig() {
return config;
}
/**
* Set the request configuration.
*
* @param config A request configuration.
*/
public final void setConfig(final Configuration config) {
this.config = config;
}
/**
* Get the security context.
*
* @return The request security context.
*/
public final SecurityContext getSecurityContext() {
return securityContext;
}
/**
* Set a new security context.
*
* @param securityContext A new security context.
*/
public final void setSecurityContext(
final SecurityContext securityContext) {
this.securityContext = securityContext;
}
/**
* Retrieve the current user for this request.
*
* @return The current user, or null if not set.
*/
protected final User getCurrentUser() {
OAuthToken t = (OAuthToken) securityContext.getUserPrincipal();
if (t.getIdentity() != null) {
return t.getIdentity().getUser();
}
return null;
}
/**
* Return the scope required to access ALL resources on this services.
*
* @return A string naming the scope.
*/
protected abstract String getAdminScope();
/**
* Return the scope required to access resources on this service.
*
* @return A string naming the scope.
*/
protected abstract String getAccessScope();
/**
* Retrieve the admin application database entry for the current running
* test.
*
* @return The admin application, assuming it's been bootstrapped.
*/
protected final Application getAdminApplication() {
Session s = getSession();
String configId = config.getString(Config.APPLICATION_ID);
BigInteger appId = IdUtil.fromString(configId);
return s.get(Application.class, appId);
}
/**
* This method tests whether a particular entity may be accessed. This is
* the case if one of two conditions is true. The first is simple- if the
* user has the administration scope of ENTITYNAME_ADMIN, then they may
* access this entity. If they only have the ENTITYNAME scope, then they
* must also be the owner of this entity (the owner of the application to
* which this entity belongs.
*
* @param entity The entity to check.
* @param requiredScope The scope required to access this
* entity.
*/
protected final void assertCanAccess(final AbstractAuthzEntity entity,
final String requiredScope) {
// No null entities permitted.
if (entity == null) {
throw new NotFoundException();
}
// Are we the entity owner?
User u = getCurrentUser();
if (u != null && u.equals(entity.getOwner())) {
return;
}
// If we don't have the scope.
if (getSecurityContext().isUserInRole(requiredScope)) {
return;
}
// Not permitted, exit.
throw new NotFoundException();
}
/**
* Determine the appropriate owner on which we should be filtering.
*
* @param ownerId The passed-in owner id, could be null.
* @return A , or null, indicating a valid filter action.
*/
protected final User resolveOwnershipFilter(final BigInteger ownerId) {
String adminScope = getAdminScope();
if (getSecurityContext().isUserInRole(adminScope)) {
if (ownerId == null) {
return null;
}
User owner = getSession().get(User.class, ownerId);
if (owner == null) {
throw new BadRequestException();
}
return owner;
}
User currentUser = getCurrentUser();
if (currentUser == null) {
// This will catch ClientCredentials clients.
throw new InvalidScopeException();
}
if (ownerId != null && !currentUser.getId().equals(ownerId)) {
throw new InvalidScopeException();
}
return currentUser;
}
/**
* Attempt to resolve the provided ID into the requested entity type.
*
* @param roleClass The entity type to resolve.
* @param entityId The ID to resolve.
* @param The return type.
* @return The resolved entity, or an exception if it cannot be accessed.
*/
protected final T resolveFilterEntity(
final Class roleClass,
final BigInteger entityId) {
String ownerScope = getAccessScope();
String adminScope = getAdminScope();
// Resolve the entity. This will error if an entity could not be
// resolved.
T entity = resolveEntityInput(roleClass, entityId);
// If we're an admin, just return what we have so far.
if (getSecurityContext().isUserInRole(adminScope)) {
return entity;
}
// If we're not scoped, throw an exception
if (!getSecurityContext().isUserInRole(ownerScope)) {
throw new InvalidScopeException();
}
// If we don't have a current user, exit. This means that we have a
// client-credentials client with no admin scope in the token.
User currentUser = getCurrentUser();
if (currentUser == null) {
throw new InvalidScopeException();
}
// If we didn't ask for anything, return the default value.
if (entityId == null) {
return null;
}
// If we don't own the entity, bad request. This is identical to the
// above, as we cannot expose to an improperly scoped token that
// an entity might exist.
if (!currentUser.equals(entity.getOwner())) {
throw new BadRequestException();
}
return entity;
}
/**
* Execute a search query.
*
* @param klass The type to cast to.
* @param query The fulltext query to execute.
* @param offset The query offset.
* @param limit The query limit.
* @return A response with the return values of this type.
*/
protected final Response executeQuery(
final Class klass,
final FullTextQuery query,
final int offset,
final int limit) {
query.setFirstResult(offset);
query.setMaxResults(limit);
return ListResponseBuilder.builder()
.offset(offset)
.limit(limit)
.addResult(query.list())
.total(query.getResultSize())
.build();
}
/**
* Provided a type and an entity, attempts to resolve a fresh entity from
* the database session.
*
* @param requestedType The type to resolve.
* @param entity The entity.
* @param The type to return (same as type to resolve).
* @return Null if provided entity is null, otherwise entity.
*/
protected final K resolveEntityInput(
final Class requestedType,
final K entity) {
// Null value check.
if (entity == null) {
return null;
}
return resolveEntityInput(requestedType, entity.getId());
}
/**
* Provided a type and an id, attempts to resolve a fresh entity from
* the database session.
*
* @param requestedType The type to resolve.
* @param entityId The entity id.
* @param The type to return (same as type to resolve).
* @return Null if provided entity is null, otherwise entity.
*/
protected final K resolveEntityInput(
final Class requestedType,
final BigInteger entityId) {
// Sanity check
if (entityId == null) {
return null;
}
// Attempt to resolve...
K entity = getSession().get(requestedType, entityId);
if (entity == null) {
throw new MalformedIdException();
}
return entity;
}
/**
* Provided a type and an entity, requires the existence of this entity.
*
* @param requestedType The type to resolve.
* @param entity The entity.
* @param The type to return (same as type to resolve).
* @return Null if provided entity is null, otherwise entity.
*/
protected final K requireEntityInput(
final Class requestedType,
final K entity) {
K resolved = resolveEntityInput(requestedType, entity);
if (resolved == null) {
throw new EntityRequiredException();
}
return resolved;
}
}
