1 /**
2 * This file Copyright (c) 2012 Magnolia International
3 * Ltd. (http://www.magnolia-cms.com). All rights reserved.
4 *
5 *
6 * This file is dual-licensed under both the Magnolia
7 * Network Agreement and the GNU General Public License.
8 * You may elect to use one or the other of these licenses.
9 *
10 * This file is distributed in the hope that it will be
11 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
12 * implied warranty of MERCHANTABILITY or FITNESS FOR A
13 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
14 * Redistribution, except as permitted by whichever of the GPL
15 * or MNA you select, is prohibited.
16 *
17 * 1. For the GPL license (GPL), you can redistribute and/or
18 * modify this file under the terms of the GNU General
19 * Public License, Version 3, as published by the Free Software
20 * Foundation. You should have received a copy of the GNU
21 * General Public License, Version 3 along with this program;
22 * if not, write to the Free Software Foundation, Inc., 51
23 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
24 *
25 * 2. For the Magnolia Network Agreement (MNA), this file
26 * and the accompanying materials are made available under the
27 * terms of the MNA which accompanies this distribution, and
28 * is available at http://www.magnolia-cms.com/mna.html
29 *
30 * Any modifications to this file must keep this entire header
31 * intact.
32 *
33 */
34 package info.magnolia.cms.core;
35
36 import java.util.Map;
37
38 import javax.jcr.RepositoryException;
39
40 import org.apache.jackrabbit.core.SessionImpl;
41 import org.apache.jackrabbit.core.cache.GrowingLRUMap;
42 import org.apache.jackrabbit.core.id.ItemId;
43 import org.apache.jackrabbit.core.id.PropertyId;
44 import org.apache.jackrabbit.spi.Path;
45 import org.slf4j.Logger;
46 import org.slf4j.LoggerFactory;
47
48 /**
49 * Permissions granting access to all users to root Caches the result of resolving paths from ids, the caching implementation based {@link org.apache.jackrabbit.core.security.authorization.principalbased.ACLProvider.CompiledPermissionImpl}. See {@link MagnoliaAccessProvider#canAccessRoot()} for details.
50 */
51 public class RootOnlyPermissions extends DefaultACLBasedPermissions {
52
53 @SuppressWarnings("unchecked")
54 private final Map<ItemId, Boolean> readCache = new GrowingLRUMap(1024, 5000);
55 private final Object monitor = new Object();
56
57 private static final Logger log = LoggerFactory.getLogger(RootOnlyPermissions.class);
58
59 public RootOnlyPermissions(SessionImpl systemSession) {
60 super(null, systemSession, null);
61 this.session = systemSession;
62 }
63
64 @Override
65 public boolean canRead(Path itemPath, ItemId itemId) throws RepositoryException {
66
67 if (itemPath == null) {
68
69 // we deal only with permissions on nodes
70 if (!itemId.denotesNode()) {
71 itemId = ((PropertyId) itemId).getParentId();
72 }
73
74 synchronized (monitor) {
75
76 if (readCache.containsKey(itemId)) {
77 return readCache.get(itemId);
78 }
79
80 itemPath = session.getHierarchyManager().getPath(itemId);
81
82 boolean canRead = "/".equals(pathResolver.getJCRPath(itemPath));
83 readCache.put(itemId, canRead);
84 return canRead;
85 }
86 }
87
88 String path = pathResolver.getJCRPath(itemPath);
89 log.debug("Read request for " + path + " :: " + itemId);
90 return "/".equals(pathResolver.getJCRPath(itemPath));
91 }
92
93 @Override
94 public boolean grants(Path absPath, int permissions) throws RepositoryException {
95 return "/".equals(pathResolver.getJCRPath(absPath));
96 }
97 }