1 /**
2 * This file Copyright (c) 2012-2018 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.security.app.dialog.field.validator;
35
36 import info.magnolia.cms.security.MgnlUserManager;
37 import info.magnolia.cms.security.SecuritySupport;
38 import info.magnolia.cms.security.UserManager;
39 import info.magnolia.ui.vaadin.integration.jcr.JcrNewNodeAdapter;
40 import info.magnolia.ui.vaadin.integration.jcr.JcrNodeAdapter;
41
42 import javax.jcr.RepositoryException;
43
44 import org.apache.commons.lang3.StringUtils;
45 import org.slf4j.Logger;
46 import org.slf4j.LoggerFactory;
47
48 import com.vaadin.v7.data.Item;
49 import com.vaadin.v7.data.validator.AbstractStringValidator;
50
51 /**
52 * Ensures uniqueness of the user name.
53 */
54 public class UniqueUserNameValidator extends AbstractStringValidator {
55
56 private static final Logger log = LoggerFactory.getLogger(UniqueUserNameValidator.class);
57
58 private final Item item;
59 private SecuritySupport securitySupport;
60
61 public UniqueUserNameValidator(Item item, String errorMessage, SecuritySupport securitySupport) {
62 super(errorMessage);
63 this.item = item;
64 this.securitySupport = securitySupport;
65 }
66
67 @Override
68 protected boolean isValidValue(String value) {
69
70 if (item instanceof JcrNodeAdapter) {
71 // If we're editing an existing node then its allowed to use the current username of course
72 if (!(item instanceof JcrNewNodeAdapter)) {
73 try {
74 String currentName = ((JcrNodeAdapter)item).getJcrItem().getName();
75 if (StringUtils.equals(value, currentName)) {
76 return true;
77 }
78 } catch (RepositoryException e) {
79 log.error("Exception occurred getting node name of node [{}]", ((JcrNodeAdapter) item).getItemId(), e);
80 return false;
81 }
82 }
83
84 // In the case of JcrNewNodeAdapter this is path of the parent node, but that's enough
85 String path;
86 try {
87 path = ((JcrNodeAdapter) item).getJcrItem().getPath();
88 } catch (RepositoryException e) {
89 log.error("Exception getting path of node [{}]", ((JcrNodeAdapter) item).getItemId(), e);
90 return false;
91 }
92
93 UserManager userManager = securitySupport.getUserManager(getRealmName(path));
94 if (!(userManager instanceof MgnlUserManager) || !((MgnlUserManager) userManager).isAllowCrossRealmDuplicateNames()) {
95 // if allow duplicate names across realms is not supported by usermanager or when it's disallowed
96 userManager = securitySupport.getUserManager();
97 }
98
99 // Check if user with such name already exists
100 if (userManager.getUser(value) == null) {
101 return true;
102 }
103 }
104 return false;
105 }
106
107 private String getRealmName(String path) {
108 path = path.substring(1); // remove slash from the beginning of the string
109 int idx = path.indexOf("/");
110 if (idx == -1) {
111 return path;
112 }
113 return StringUtils.substringBefore(path, "/");
114 }
115 }