feat(jdk8): move files to new folder to avoid resources compiled.
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295
jdkSrc/jdk8/com/sun/jmx/snmp/IPAcl/AclImpl.java
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295
jdkSrc/jdk8/com/sun/jmx/snmp/IPAcl/AclImpl.java
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/*
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* Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package com.sun.jmx.snmp.IPAcl;
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import java.security.Principal;
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import java.security.acl.Acl;
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import java.security.acl.AclEntry;
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import java.security.acl.NotOwnerException;
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import java.io.Serializable;
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import java.security.acl.Permission;
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import java.util.Vector;
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import java.util.Enumeration;
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/**
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* Represent an Access Control List (ACL) which is used to guard access to http adaptor.
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* <P>
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* It is a data structure with multiple ACL entries. Each ACL entry, of interface type
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* AclEntry, contains a set of permissions and a set of communities associated with a
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* particular principal. (A principal represents an entity such as a host or a group of host).
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* Additionally, each ACL entry is specified as being either positive or negative.
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* If positive, the permissions are to be granted to the associated principal.
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* If negative, the permissions are to be denied.
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*
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* @see java.security.acl.Acl
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*/
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class AclImpl extends OwnerImpl implements Acl, Serializable {
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private static final long serialVersionUID = -2250957591085270029L;
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private Vector<AclEntry> entryList = null;
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private String aclName = null;
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/**
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* Constructs the ACL with a specified owner
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*
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* @param owner owner of the ACL.
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* @param name name of this ACL.
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*/
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public AclImpl (PrincipalImpl owner, String name) {
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super(owner);
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entryList = new Vector<>();
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aclName = name;
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}
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/**
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* Sets the name of this ACL.
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*
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* @param caller the principal invoking this method. It must be an owner
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* of this ACL.
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* @param name the name to be given to this ACL.
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*
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* @exception NotOwnerException if the caller principal is not an owner
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* of this ACL.
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* @see java.security.Principal
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*/
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@Override
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public void setName(Principal caller, String name)
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throws NotOwnerException {
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if (!isOwner(caller))
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throw new NotOwnerException();
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aclName = name;
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}
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/**
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* Returns the name of this ACL.
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*
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* @return the name of this ACL.
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*/
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@Override
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public String getName(){
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return aclName;
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}
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/**
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* Adds an ACL entry to this ACL. An entry associates a principal (e.g., an individual or a group)
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* with a set of permissions. Each principal can have at most one positive ACL entry
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* (specifying permissions to be granted to the principal) and one negative ACL entry
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* (specifying permissions to be denied). If there is already an ACL entry
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* of the same type (negative or positive) already in the ACL, false is returned.
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*
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* @param caller the principal invoking this method. It must be an owner
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* of this ACL.
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* @param entry the ACL entry to be added to this ACL.
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* @return true on success, false if an entry of the same type (positive
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* or negative) for the same principal is already present in this ACL.
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* @exception NotOwnerException if the caller principal is not an owner of
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* this ACL.
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* @see java.security.Principal
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*/
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@Override
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public boolean addEntry(Principal caller, AclEntry entry)
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throws NotOwnerException {
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if (!isOwner(caller))
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throw new NotOwnerException();
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if (entryList.contains(entry))
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return false;
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/*
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for (Enumeration e = entryList.elements();e.hasMoreElements();){
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AclEntry ent = (AclEntry) e.nextElement();
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if (ent.getPrincipal().equals(entry.getPrincipal()))
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return false;
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}
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*/
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entryList.addElement(entry);
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return true;
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}
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/**
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* Removes an ACL entry from this ACL.
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*
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* @param caller the principal invoking this method. It must be an owner
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* of this ACL.
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* @param entry the ACL entry to be removed from this ACL.
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* @return true on success, false if the entry is not part of this ACL.
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* @exception NotOwnerException if the caller principal is not an owner
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* of this Acl.
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* @see java.security.Principal
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* @see java.security.acl.AclEntry
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*/
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@Override
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public boolean removeEntry(Principal caller, AclEntry entry)
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throws NotOwnerException {
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if (!isOwner(caller))
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throw new NotOwnerException();
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return (entryList.removeElement(entry));
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}
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/**
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* Removes all ACL entries from this ACL.
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*
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* @param caller the principal invoking this method. It must be an owner
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* of this ACL.
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* @exception NotOwnerException if the caller principal is not an owner of
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* this Acl.
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* @see java.security.Principal
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*/
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public void removeAll(Principal caller)
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throws NotOwnerException {
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if (!isOwner(caller))
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throw new NotOwnerException();
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entryList.removeAllElements();
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}
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/**
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* Returns an enumeration for the set of allowed permissions for
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* the specified principal
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* (representing an entity such as an individual or a group).
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* This set of allowed permissions is calculated as follows:
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* <UL>
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* <LI>If there is no entry in this Access Control List for the specified
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* principal, an empty permission set is returned.</LI>
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* <LI>Otherwise, the principal's group permission sets are determined.
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* (A principal can belong to one or more groups, where a group is a group
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* of principals, represented by the Group interface.)</LI>
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* </UL>
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* @param user the principal whose permission set is to be returned.
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* @return the permission set specifying the permissions the principal
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* is allowed.
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* @see java.security.Principal
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*/
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@Override
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public Enumeration<Permission> getPermissions(Principal user){
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Vector<Permission> empty = new Vector<>();
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for (Enumeration<AclEntry> e = entryList.elements();e.hasMoreElements();){
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AclEntry ent = e.nextElement();
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if (ent.getPrincipal().equals(user))
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return ent.permissions();
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}
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return empty.elements();
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}
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/**
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* Returns an enumeration of the entries in this ACL. Each element in the
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* enumeration is of type AclEntry.
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*
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* @return an enumeration of the entries in this ACL.
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*/
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@Override
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public Enumeration<AclEntry> entries(){
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return entryList.elements();
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}
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/**
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* Checks whether or not the specified principal has the specified
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* permission.
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* If it does, true is returned, otherwise false is returned.
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* More specifically, this method checks whether the passed permission
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* is a member of the allowed permission set of the specified principal.
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* The allowed permission set is determined by the same algorithm as is
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* used by the getPermissions method.
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*
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* @param user the principal, assumed to be a valid authenticated Principal.
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* @param perm the permission to be checked for.
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* @return true if the principal has the specified permission,
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* false otherwise.
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* @see java.security.Principal
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* @see java.security.Permission
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*/
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@Override
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public boolean checkPermission(Principal user,
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java.security.acl.Permission perm) {
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for (Enumeration<AclEntry> e = entryList.elements();e.hasMoreElements();){
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AclEntry ent = e.nextElement();
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if (ent.getPrincipal().equals(user))
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if (ent.checkPermission(perm)) return true;
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}
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return false;
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}
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/**
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* Checks whether or not the specified principal has the specified
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* permission.
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* If it does, true is returned, otherwise false is returned.
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* More specifically, this method checks whether the passed permission
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* is a member of the allowed permission set of the specified principal.
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* The allowed permission set is determined by the same algorithm as is
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* used by the getPermissions method.
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*
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* @param user the principal, assumed to be a valid authenticated Principal.
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* @param community the community name associated with the principal.
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* @param perm the permission to be checked for.
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* @return true if the principal has the specified permission, false
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* otherwise.
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* @see java.security.Principal
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* @see java.security.Permission
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*/
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public boolean checkPermission(Principal user, String community,
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java.security.acl.Permission perm) {
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for (Enumeration<AclEntry> e = entryList.elements();e.hasMoreElements();){
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AclEntryImpl ent = (AclEntryImpl) e.nextElement();
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if (ent.getPrincipal().equals(user))
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if (ent.checkPermission(perm) && ent.checkCommunity(community)) return true;
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}
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return false;
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}
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/**
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* Checks whether or not the specified community string is defined.
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*
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* @param community the community name associated with the principal.
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*
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* @return true if the specified community string is defined, false
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* otherwise.
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* @see java.security.Principal
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* @see java.security.Permission
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*/
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public boolean checkCommunity(String community) {
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for (Enumeration<AclEntry> e = entryList.elements();e.hasMoreElements();){
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AclEntryImpl ent = (AclEntryImpl) e.nextElement();
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if (ent.checkCommunity(community)) return true;
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}
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return false;
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}
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/**
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* Returns a string representation of the ACL contents.
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*
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* @return a string representation of the ACL contents.
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*/
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@Override
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public String toString(){
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return ("AclImpl: "+ getName());
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}
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}
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