001/*
002 * (C) Copyright 2019 Nuxeo (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     Florent Guillaume
018 */
019package org.nuxeo.ecm.core.security;
020
021import java.util.Arrays;
022
023import org.nuxeo.ecm.core.api.NuxeoPrincipal;
024import org.nuxeo.ecm.core.api.security.ACP;
025import org.nuxeo.ecm.core.api.security.Access;
026import org.nuxeo.ecm.core.api.security.SecurityConstants;
027import org.nuxeo.ecm.core.model.Document;
028import org.nuxeo.ecm.core.query.sql.model.SQLQuery;
029
030/**
031 * Security policy that prevents deletion of a document when it is under retention or has a legal hold.
032 *
033 * @since 11.1
034 */
035public class RetentionAndHoldSecurityPolicy extends AbstractSecurityPolicy {
036
037    @Override
038    public Access checkPermission(Document doc, ACP mergedAcp, NuxeoPrincipal principal, String permission,
039            String[] resolvedPermissions, String[] additionalPrincipals) {
040        if (!Arrays.asList(resolvedPermissions).contains(SecurityConstants.REMOVE)) {
041            // not checking REMOVE, ignore
042            return Access.UNKNOWN;
043        }
044        if (!doc.isUnderRetentionOrLegalHold()) {
045            return Access.UNKNOWN;
046        }
047        return Access.DENY;
048    }
049
050    @Override
051    public boolean isRestrictingPermission(String permission) {
052        // the important aspect is that we don't restrict BROWSE
053        return permission.equals(SecurityConstants.REMOVE);
054    }
055
056    @Override
057    public boolean isExpressibleInQuery(String repositoryName) {
058        return true;
059    }
060
061    @Override
062    public SQLQuery.Transformer getQueryTransformer(String repositoryName) {
063        return SQLQuery.Transformer.IDENTITY;
064    }
065
066}