org.apache.jackrabbit.webdav.security.Privilege Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.jackrabbit.webdav.security;
import org.apache.jackrabbit.webdav.DavException;
import org.apache.jackrabbit.webdav.DavServletResponse;
import org.apache.jackrabbit.webdav.xml.DomUtil;
import org.apache.jackrabbit.webdav.xml.Namespace;
import org.apache.jackrabbit.webdav.xml.XmlSerializable;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import java.util.HashMap;
import java.util.Map;
/**
* Privilege
*/
public class Privilege implements XmlSerializable {
public static final String XML_PRIVILEGE = "privilege";
/**
* Map for registered privileges
*/
private static final Map REGISTERED_PRIVILEGES = new HashMap();
//-------------------------------------< Privileges defined by RFC 3744 >---
/**
* The read privilege controls methods that return information about the
* state of the resource, including the resource's properties. Affected
* methods include GET and PROPFIND and OPTIONS.
*
* @see RFC 3744 Section 3.1. DAV:read Privilege
*/
public static final Privilege PRIVILEGE_READ = getPrivilege("read", SecurityConstants.NAMESPACE);
/**
* The write privilege controls methods that lock a resource or modify the
* content, dead properties, or (in the case of a collection) membership of
* the resource, such as PUT and PROPPATCH.
*
* @see RFC 3744 Section 3.2. DAV:write Privilege
*/
public static final Privilege PRIVILEGE_WRITE = getPrivilege("write", SecurityConstants.NAMESPACE);
/**
* The DAV:write-properties privilege controls methods that modify the dead
* properties of the resource, such as PROPPATCH. Whether this privilege may
* be used to control access to any live properties is determined by the
* implementation.
*
* @see RFC 3744 Section 3.3. DAV:write-properties Privilege
*/
public static final Privilege PRIVILEGE_WRITE_PROPERTIES = getPrivilege("write-properties", SecurityConstants.NAMESPACE);
/**
* The DAV:write-content privilege controls methods that modify the content
* of an existing resource, such as PUT.
*
* @see RFC 3744 Section 3.4. DAV:write-content Privilege
*/
public static final Privilege PRIVILEGE_WRITE_CONTENT = getPrivilege("write-content", SecurityConstants.NAMESPACE);
/**
* The DAV:unlock privilege controls the use of the UNLOCK method by a
* principal other than the lock owner (the principal that created a lock
* can always perform an UNLOCK).
*
* @see RFC 3744 Section 3.5. DAV:unlock Privilege
*/
public static final Privilege PRIVILEGE_UNLOCK = getPrivilege("unlock", SecurityConstants.NAMESPACE);
/**
* The DAV:read-acl privilege controls the use of PROPFIND to retrieve the
* DAV:acl property of the resource.
*
* @see RFC 3744 Section 3.6. DAV:read-acl Privilege
*/
public static final Privilege PRIVILEGE_READ_ACL = getPrivilege("read-acl", SecurityConstants.NAMESPACE);
/**
* The DAV:read-current-user-privilege-set privilege controls the use of
* PROPFIND to retrieve the DAV:current-user-privilege-set property of the
* resource.
*
* @see RFC 3744 Section 3.7. DAV:"read-current-user-privilege-set Privilege
*/
public static final Privilege PRIVILEGE_READ_CURRENT_USER_PRIVILEGE_SET = getPrivilege("read-current-user-privilege-set", SecurityConstants.NAMESPACE);
/**
* The DAV:write-acl privilege controls use of the ACL method to modify the
* DAV:acl property of the resource.
*
* @see RFC 3744 Section 3.8. DAV:write-acl Privilege
*/
public static final Privilege PRIVILEGE_WRITE_ACL = getPrivilege("write-acl", SecurityConstants.NAMESPACE);
/**
* The DAV:bind privilege allows a method to add a new member URL to the
* specified collection (for example via PUT or MKCOL). It is ignored for
* resources that are not collections.
*
* @see RFC 3744 Section 3.9. DAV:bind Privilege
*/
public static final Privilege PRIVILEGE_BIND = getPrivilege("bind", SecurityConstants.NAMESPACE);
/**
* The DAV:unbind privilege allows a method to remove a member URL from the
* specified collection (for example via DELETE or MOVE). It is ignored for
* resources that are not collections.
*
* @see RFC 3744 Section 3.10. DAV:unbind Privilege
*/
public static final Privilege PRIVILEGE_UNBIND = getPrivilege("unbind", SecurityConstants.NAMESPACE);
/**
* DAV:all is an aggregate privilege that contains the entire set of
* privileges that can be applied to the resource.
*
* @see RFC 3744 Section 3.11. DAV:all Privilege
*/
public static final Privilege PRIVILEGE_ALL = getPrivilege("all", SecurityConstants.NAMESPACE);
private final String privilege;
private final Namespace namespace;
/**
* Private constructor
*
* @param privilege
* @param namespace
*/
private Privilege(String privilege, Namespace namespace) {
this.privilege = privilege;
this.namespace = namespace;
}
/**
* @return The local name of this Privilege.
*/
public String getName() {
return privilege;
}
/**
* @return The namespace of this Privilege.
*/
public Namespace getNamespace() {
return namespace;
}
/**
* @see XmlSerializable#toXml(Document)
*/
public Element toXml(Document document) {
Element privEl = DomUtil.createElement(document, XML_PRIVILEGE, SecurityConstants.NAMESPACE);
DomUtil.addChildElement(privEl, privilege, namespace);
return privEl;
}
/**
* Factory method to create/retrieve a Privilege.
*
* @param privilege
* @param namespace
* @return
*/
public static Privilege getPrivilege(String privilege, Namespace namespace) {
if (privilege == null) {
throw new IllegalArgumentException("'null' is not a valid privilege.");
}
if (namespace == null) {
namespace = Namespace.EMPTY_NAMESPACE;
}
String key = "{" + namespace.getURI() + "}" + privilege;
if (REGISTERED_PRIVILEGES.containsKey(key)) {
return REGISTERED_PRIVILEGES.get(key);
} else {
Privilege p = new Privilege(privilege, namespace);
REGISTERED_PRIVILEGES.put(key, p);
return p;
}
}
/**
* Factory method to create/retrieve a Privilege from the given
* DAV:privilege element.
*
* @param privilege
* @return
*/
public static Privilege getPrivilege(Element privilege) throws DavException {
if (!DomUtil.matches(privilege, XML_PRIVILEGE, SecurityConstants.NAMESPACE)) {
throw new DavException(DavServletResponse.SC_BAD_REQUEST, "DAV:privilege element expected.");
}
Element el = DomUtil.getFirstChildElement(privilege);
return getPrivilege(el.getLocalName(), DomUtil.getNamespace(el));
}
}