1 /**
2 * This file Copyright (c) 2003-2010 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.security;
35
36 import java.io.Serializable;
37 import java.util.List;
38
39 import org.apache.commons.lang.StringUtils;
40
41
42 /**
43 * @author Sameer Charles
44 * @version $Id: AccessManagerImpl.java 32667 2010-03-13 00:37:06Z gjoseph $
45 */
46 public class AccessManagerImpl implements AccessManager, Serializable {
47
48 private static final long serialVersionUID = 222L;
49
50 private List<Permission> userPermissions;
51
52 /**
53 * Check if the given path has specified permissions
54 * @param path
55 * @param permissions
56 * @return true if the given path has this permissions
57 */
58 public boolean isGranted(String path, long permissions) {
59 if (StringUtils.isEmpty(path)) {
60 path = "/"; //$NON-NLS-1$
61 }
62
63 long currentPermission = getPermissions(path);
64 boolean granted = (currentPermission & permissions) == permissions;
65
66 return granted;
67 }
68
69 /**
70 * Set list of permissions for this access manager
71 * @param permissions list of values assigned to this access manager
72 */
73 public void setPermissionList(List<Permission> permissions) {
74 this.userPermissions = permissions;
75 }
76
77 /**
78 * Get permission list assigned to this access manager
79 */
80 public List<Permission> getPermissionList() {
81 return this.userPermissions;
82 }
83
84 /**
85 * Get permissions assigned to the given path.
86 * @param path
87 * @see info.magnolia.cms.security.Permission
88 * @return highest permission assigned to this path
89 */
90 public long getPermissions(String path) {
91 if (userPermissions == null) {
92 return Permission.NONE;
93 }
94 long permission = 0;
95 int patternLength = 0;
96 for (Permission p : userPermissions) {
97 if (p.match(path)) {
98 int l = p.getPattern().getLength();
99 if (patternLength == l && (permission < p.getPermissions())) {
100 permission = p.getPermissions();
101 } else if (patternLength < l) {
102 patternLength = l;
103 permission = p.getPermissions();
104 }
105 }
106 }
107 return permission;
108 }
109 }