/*
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* Copyright 2016 Red Hat, Inc. and/or its affiliates
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* and other contributors as indicated by the @author tags.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.keycloak.protocol.cas.mappers;
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import org.keycloak.models.*;
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import org.keycloak.models.utils.RoleUtils;
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import java.util.Map;
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import java.util.Set;
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import java.util.function.Predicate;
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import java.util.stream.Collectors;
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import java.util.stream.Stream;
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/**
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* Base class for mapping of user role mappings to an ID and Access Token claim.
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*
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* @author <a href="mailto:thomas.darimont@gmail.com">Thomas Darimont</a>
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*/
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abstract class AbstractUserRoleMappingMapper extends AbstractCASProtocolMapper {
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/**
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* Returns a stream with roles that come from:
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* <ul>
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* <li>Direct assignment of the role to the user</li>
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* <li>Direct assignment of the role to any group of the user or any of its parent group</li>
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* <li>Composite roles are expanded recursively, the composite role itself is also contained in the returned stream</li>
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* </ul>
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* @param user User to enumerate the roles for
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*/
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public Stream<RoleModel> getAllUserRolesStream(UserModel user) {
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return Stream.concat(
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user.getRoleMappings().stream(),
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user.getGroups().stream()
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.flatMap(this::groupAndItsParentsStream)
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.flatMap(g -> g.getRoleMappings().stream()))
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.flatMap(RoleUtils::expandCompositeRolesStream);
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}
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/**
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* Returns stream of the given group and its parents (recursively).
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* @param group
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* @return
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*/
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private Stream<GroupModel> groupAndItsParentsStream(GroupModel group) {
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Stream.Builder<GroupModel> sb = Stream.builder();
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while (group != null) {
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sb.add(group);
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group = group.getParent();
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}
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return sb.build();
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}
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/**
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* Retrieves all roles of the current user based on direct roles set to the user, its groups and their parent groups.
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* Then it recursively expands all composite roles, and restricts according to the given predicate {@code restriction}.
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* If the current client sessions is restricted (i.e. no client found in active user session has full scope allowed),
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* the final list of roles is also restricted by the client scope. Finally, the list is mapped to the token into
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* a claim.
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*/
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protected void setAttribute(Map<String, Object> attributes, ProtocolMapperModel mappingModel, UserSessionModel userSession,
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Predicate<RoleModel> restriction, String prefix) {
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String rolePrefix = prefix == null ? "" : prefix;
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UserModel user = userSession.getUser();
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// get a set of all realm roles assigned to the user or its group
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Stream<RoleModel> clientUserRoles = getAllUserRolesStream(user).filter(restriction);
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boolean dontLimitScope = userSession.getAuthenticatedClientSessions().values().stream().anyMatch(cs -> cs.getClient().isFullScopeAllowed());
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if (! dontLimitScope) {
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Set<RoleModel> clientRoles = userSession.getAuthenticatedClientSessions().values().stream()
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.flatMap(cs -> cs.getClient().getScopeMappings().stream())
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.collect(Collectors.toSet());
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clientUserRoles = clientUserRoles.filter(clientRoles::contains);
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}
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Set<String> realmRoleNames = clientUserRoles
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.map(m -> rolePrefix + m.getName())
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.collect(Collectors.toSet());
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setPlainAttribute(attributes, mappingModel, realmRoleNames);
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}
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}
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