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Java > Open Source Codes > net > sf > drftpd > master > config > Permission


1 /*
2  * This file is part of DrFTPD, Distributed FTP Daemon.
3  *
4  * DrFTPD is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License as published by
6  * the Free Software Foundation; either version 2 of the License, or
7  * (at your option) any later version.
8  *
9  * DrFTPD is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with DrFTPD; if not, write to the Free Software
16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17  */
18 package net.sf.drftpd.master.config;
19
20 import java.util.Collection JavaDoc;
21 import java.util.Iterator JavaDoc;
22
23 import net.sf.drftpd.master.usermanager.User;
24
25 /**
26  * @author mog
27  * @version $Id: Permission.java,v 1.6 2004/04/27 19:57:20 mog Exp $
28  */
29 public class Permission {
30     private Collection JavaDoc _users;
31     public Permission(Collection JavaDoc users) {
32         _users = users;
33     }
34     
35     public boolean check(User user) {
36         for (Iterator JavaDoc iter = _users.iterator(); iter.hasNext();) {
37             String JavaDoc aclUser = (String JavaDoc) iter.next();
38             boolean allow = true;
39             if (aclUser.charAt(0) == '!') {
40                 allow = false;
41                 aclUser = aclUser.substring(1);
42             }
43             if (aclUser.equals("*")) {
44                 return allow;
45             }
46             else if(aclUser.charAt(0) == '-') {
47                 //USER
48 if(aclUser.substring(1).equals(user.getUsername())) {
49                     return allow;
50                 }
51                 continue;
52             }
53             else if (aclUser.charAt(0) == '=') {
54                 //GROUP
55 if(user.isMemberOf(aclUser.substring(1))) {
56                     return allow;
57                 }
58             }
59             else {
60                 //FLAG, we don't have flags, we have groups and that's the same but multiple letters
61 if(user.isMemberOf(aclUser)) {
62                     return allow;
63                 }
64             }
65         }
66         // didn't match..
67 return false;
68     }
69
70 }
71
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