| /* |
| * 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.felix.framework.security.permissionadmin; |
| |
| import java.io.IOException; |
| import java.security.AllPermission; |
| import java.security.Permission; |
| import java.security.ProtectionDomain; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.felix.framework.security.condpermadmin.ConditionalPermissionAdminImpl; |
| import org.apache.felix.framework.security.util.Permissions; |
| import org.apache.felix.framework.security.util.PropertiesCache; |
| import org.osgi.framework.Bundle; |
| import org.osgi.service.permissionadmin.PermissionAdmin; |
| import org.osgi.service.permissionadmin.PermissionInfo; |
| |
| /** |
| * This class is a relatively straight forward implementation of the PermissionAdmin service. |
| * The only somewhat involved thing is that it respects the presents of a |
| * conditionalpermissionadmin service as per spec. |
| */ |
| // TODO: Do we need this class at all or can we just emulate it using the condpermadmin? |
| public final class PermissionAdminImpl implements PermissionAdmin |
| { |
| private static final PermissionInfo[] ALL_PERMISSION = |
| new PermissionInfo[] { new PermissionInfo( |
| AllPermission.class.getName(), "", "") }; |
| |
| private final Map m_store = new HashMap(); |
| |
| private final PropertiesCache m_cache; |
| |
| private final Permissions m_permissions; |
| |
| private PermissionInfo[] m_default = null; |
| |
| public PermissionAdminImpl(Permissions permissions, PropertiesCache cache) |
| throws IOException |
| { |
| m_permissions = permissions; |
| m_cache = cache; |
| Map old = m_cache.read(PermissionInfo[].class); |
| if (old != null) |
| { |
| m_store.putAll(old); |
| } |
| } |
| |
| public PermissionInfo[] getDefaultPermissions() |
| { |
| synchronized (m_store) |
| { |
| if (m_default == null) |
| { |
| return null; |
| } |
| return (PermissionInfo[]) m_default.clone(); |
| } |
| } |
| |
| public synchronized String[] getLocations() |
| { |
| synchronized (m_store) |
| { |
| if (m_store.isEmpty()) |
| { |
| return null; |
| } |
| |
| return (String[]) m_store.keySet().toArray( |
| new String[m_store.size()]); |
| } |
| } |
| |
| public PermissionInfo[] getPermissions(String location) |
| { |
| synchronized (m_store) |
| { |
| if (m_store.containsKey(location)) |
| { |
| return (PermissionInfo[]) ((PermissionInfo[]) m_store |
| .get(location)).clone(); |
| } |
| return null; |
| } |
| } |
| |
| /** |
| * This will do the actual permission check as described in the core spec 10.2 |
| * It will respect a present condpermadmin service as described in 9.10. |
| * |
| * @param location the location of the bundle. |
| * @param bundle the bundle in question. |
| * @param permission the permission to check. |
| * @param cpai A condpermadmin if one is present else null. |
| * @param pd the protectiondomain |
| * @return Boolean.TRUE if the location is bound and the permission is |
| * granted or if there is no cpa and the default permissions imply the |
| * permission Boolean.FALSE otherwise unless the location is not bound and |
| * their is a cpa in which case null is returned. |
| */ |
| public Boolean hasPermission(String location, Bundle bundle, |
| Permission permission, ConditionalPermissionAdminImpl cpai, |
| ProtectionDomain pd) |
| { |
| PermissionInfo[] permissions = null; |
| boolean file = false; |
| synchronized (m_store) |
| { |
| if (m_store.containsKey(location)) |
| { |
| permissions = (PermissionInfo[]) m_store.get(location); |
| file = true; |
| } |
| else if ((cpai == null) || (cpai.isEmpty())) |
| { |
| if (m_default != null) |
| { |
| permissions = m_default; |
| } |
| else |
| { |
| permissions = ALL_PERMISSION; |
| } |
| } |
| } |
| if ((cpai == null) || cpai.isEmpty() || file) |
| { |
| if (check(permissions, permission, file ? bundle : null)) |
| { |
| return Boolean.TRUE; |
| } |
| } |
| |
| permissions = m_permissions.getImplicit(bundle); |
| |
| if (check(permissions, permission, bundle)) |
| { |
| return Boolean.TRUE; |
| } |
| |
| if ((cpai != null) && !file) |
| { |
| return null; |
| } |
| return Boolean.FALSE; |
| } |
| |
| private boolean check(PermissionInfo[] permissions, Permission permission, |
| Bundle bundle) |
| { |
| Permissions permissionsObject = |
| m_permissions.getPermissions(permissions); |
| |
| return permissionsObject.implies(permission, bundle); |
| } |
| |
| public void setDefaultPermissions(PermissionInfo[] permissions) |
| { |
| Object sm = System.getSecurityManager(); |
| if (sm != null) |
| { |
| ((SecurityManager) sm).checkPermission(Permissions.ALL_PERMISSION); |
| } |
| |
| synchronized (m_cache) |
| { |
| PermissionInfo[] def = null; |
| Map store = null; |
| synchronized (m_store) |
| { |
| def = m_default; |
| store = new HashMap(m_store); |
| |
| m_default = (permissions != null) ? notNull(permissions) : null; |
| } |
| |
| try |
| { |
| m_cache.write(setDefaults(store, def)); |
| } |
| catch (IOException ex) |
| { |
| synchronized (m_store) |
| { |
| m_default = def; |
| } |
| |
| ex.printStackTrace(); |
| // TODO: log this |
| throw new IllegalStateException(ex.getMessage()); |
| } |
| } |
| } |
| |
| public void setPermissions(String location, PermissionInfo[] permissions) |
| { |
| Object sm = System.getSecurityManager(); |
| if (sm != null) |
| { |
| ((SecurityManager) sm).checkPermission(Permissions.ALL_PERMISSION); |
| } |
| |
| synchronized (m_cache) |
| { |
| if (location != null) |
| { |
| Map store = null; |
| Map storeCopy = null; |
| PermissionInfo[] def = null; |
| synchronized (m_store) |
| { |
| storeCopy = new HashMap(m_store); |
| if (permissions != null) |
| { |
| m_store.put(location, notNull(permissions)); |
| } |
| else |
| { |
| m_store.remove(location); |
| } |
| store = new HashMap(m_store); |
| } |
| try |
| { |
| m_cache.write(setDefaults(store, def)); |
| } |
| catch (IOException ex) |
| { |
| synchronized (m_store) |
| { |
| m_store.clear(); |
| m_store.putAll(storeCopy); |
| } |
| |
| ex.printStackTrace(); |
| // TODO: log this |
| throw new IllegalStateException(ex.getMessage()); |
| } |
| } |
| } |
| } |
| |
| private Map setDefaults(Map store, PermissionInfo[] def) |
| { |
| if (def != null) |
| { |
| store.put("DEFAULT", def); |
| } |
| else |
| { |
| store.remove("DEFAULT"); |
| } |
| return store; |
| } |
| |
| private PermissionInfo[] notNull(PermissionInfo[] permissions) |
| { |
| List result = new ArrayList(); |
| |
| for (int i = 0; i < permissions.length; i++) |
| { |
| if (permissions[i] != null) |
| { |
| result.add(permissions[i]); |
| } |
| } |
| return (PermissionInfo[]) result.toArray(new PermissionInfo[result |
| .size()]); |
| } |
| } |