| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.jackrabbit.oak.security.authorization.permission; |
| |
| import org.apache.jackrabbit.oak.spi.security.authorization.permission.Permissions; |
| import org.apache.jackrabbit.oak.spi.security.authorization.restriction.RestrictionPattern; |
| import org.apache.jackrabbit.oak.spi.security.privilege.PrivilegeBits; |
| import org.apache.jackrabbit.oak.spi.security.privilege.PrivilegeConstants; |
| |
| final class ReadStatus { |
| |
| private static final int THIS = 1; |
| private static final int PROPERTIES = 2; |
| private static final int CHILD_NODES = 4; |
| private static final int THIS_PROPERTIES = THIS | PROPERTIES; |
| private static final int ALL = THIS | PROPERTIES | CHILD_NODES; |
| |
| static final ReadStatus ALLOW_THIS = new ReadStatus(THIS, true); |
| static final ReadStatus ALLOW_THIS_PROPERTIES = new ReadStatus(THIS_PROPERTIES, true); |
| static final ReadStatus ALLOW_ALL = new ReadStatus(ALL, true); |
| static final ReadStatus DENY_THIS = new ReadStatus(THIS, false); |
| static final ReadStatus DENY_THIS_PROPERTIES = new ReadStatus(THIS_PROPERTIES, false); |
| static final ReadStatus DENY_ALL = new ReadStatus(ALL, false); |
| |
| private static final PrivilegeBits READ_BITS = PrivilegeBits.BUILT_IN.get(PrivilegeConstants.JCR_READ); |
| private static final PrivilegeBits READ_PROPERTIES_BITS = PrivilegeBits.BUILT_IN.get(PrivilegeConstants.REP_READ_PROPERTIES); |
| |
| private final int status; |
| private final boolean isAllow; |
| |
| private ReadStatus(int status, boolean isAllow) { |
| this.status = status; |
| this.isAllow = isAllow; |
| } |
| |
| static ReadStatus create(PermissionEntry pe, long permission, boolean skipped) { |
| /* |
| best effort: read status is only calculated if |
| - no permission entries have been filtered out (e.g. an entry that |
| only applies to certain properties and thus not to the target tree itself) |
| - the target does not define access control content |
| - the matching entry doesn't contain any restrictions |
| */ |
| if (skipped || permission == Permissions.READ_ACCESS_CONTROL || pe.restriction != RestrictionPattern.EMPTY) { |
| return (pe.isAllow) ? ALLOW_THIS : DENY_THIS; |
| } else { |
| if (pe.privilegeBits.includes(READ_BITS)) { |
| return (pe.isAllow) ? ALLOW_ALL : DENY_ALL; |
| } else if (pe.privilegeBits.includes(READ_PROPERTIES_BITS)) { |
| return (pe.isAllow) ? ALLOW_THIS_PROPERTIES : DENY_THIS_PROPERTIES; |
| } else { |
| return (pe.isAllow) ? ALLOW_THIS : DENY_THIS; |
| } |
| } |
| } |
| |
| boolean allowsThis() { |
| return isAllow && ((status & THIS) == THIS); |
| } |
| |
| boolean allowsProperties() { |
| return isAllow && ((status & PROPERTIES) == PROPERTIES); |
| } |
| |
| boolean allowsAll() { |
| // NOTE: calculation of allows-all requires knowledge of permissions defined in the subtree |
| return false; |
| } |
| } |