/hudson-core/src/main/java/hudson/security/SparseACL.java
http://github.com/hudson/hudson · Java · 109 lines · 62 code · 16 blank · 31 comment · 8 complexity · 1c18d664236a4dd3b4aa14b141b5a9c5 MD5 · raw file
- /*
- * The MIT License
- *
- * Copyright (c) 2004-2009, Sun Microsystems, Inc., Kohsuke Kawaguchi
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
- package hudson.security;
- import org.acegisecurity.Authentication;
- import org.acegisecurity.acls.sid.Sid;
- import java.util.ArrayList;
- import java.util.List;
- import java.util.logging.Logger;
- import static java.util.logging.Level.FINE;
- /**
- * Accses control list.
- *
- * @author Kohsuke Kawaguchi
- */
- public class SparseACL extends SidACL {
- public static final class Entry {
- // Sid has value-equality semantics
- //TODO: review and check whether we can do it private
- public final Sid sid;
- public final Permission permission;
- public final boolean allowed;
- public Entry(Sid sid, Permission permission, boolean allowed) {
- this.sid = sid;
- this.permission = permission;
- this.allowed = allowed;
- }
- public Sid getSid() {
- return sid;
- }
- public Permission getPermission() {
- return permission;
- }
- public boolean isAllowed() {
- return allowed;
- }
- }
- private final List<Entry> entries = new ArrayList<Entry>();
- private ACL parent;
- public SparseACL(ACL parent) {
- this.parent = parent;
- }
- public void add(Entry e) {
- entries.add(e);
- }
- public void add(Sid sid, Permission permission, boolean allowed) {
- add(new Entry(sid,permission,allowed));
- }
- @Override
- public boolean hasPermission(Authentication a, Permission permission) {
- if(a==SYSTEM) return true;
- Boolean b = _hasPermission(a,permission);
- if(b!=null) return b;
- if(parent!=null) {
- if(LOGGER.isLoggable(FINE))
- LOGGER.fine("hasPermission("+a+","+permission+") is delegating to parent ACL: "+parent);
- return parent.hasPermission(a,permission);
- }
- // the ultimate default is to reject everything
- return false;
- }
- @Override
- protected Boolean hasPermission(Sid p, Permission permission) {
- for( ; permission!=null; permission=permission.impliedBy ) {
- for (Entry e : entries) {
- if(e.permission==permission && e.sid.equals(p))
- return e.allowed;
- }
- }
- return null;
- }
- private static final Logger LOGGER = Logger.getLogger(SparseACL.class.getName());
- }