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/* Copyright (c) 2005-2007 Jan S. Rellermeyer
* Information and Communication Systems Research Group (IKS),
* Department of Computer Science, ETH Zurich.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - Neither the name of ETH Zurich nor the names of its contributors may be
* used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
package ch.ethz.iks.slp.impl;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Locale;
import ch.ethz.iks.slp.ServiceLocationException;
import ch.ethz.iks.slp.ServiceURL;
/**
* deregister a service from a DA.
*
* @author Jan S. Rellermeyer, IKS, ETH Zürich
* @since 0.1
*/
class ServiceDeregistration extends SLPMessage {
/**
* the service url.
*/
ServiceURL url;
/**
* the scopes.
*/
List scopeList;
/**
* the attributes.
*/
List attList;
/**
* create a new ServiceDeregistration.
*
* @param serviceURL
* the ServiceURL.
* @param scopes
* a List of scopes.
* @param attributes
* the attributes.
* @param theLocale
* the locale.
*/
ServiceDeregistration(final ServiceURL serviceURL, final List scopes,
final List attributes, final Locale theLocale) {
funcID = SRVDEREG;
locale = theLocale;
if (serviceURL == null) {
throw new IllegalArgumentException("serviceURL must not be null");
}
url = serviceURL;
scopeList = scopes;
if (scopeList == null) {
scopeList = Arrays.asList(new String[] { "default" });
}
attList = attributes;
if (attList == null) {
attList = new ArrayList();
}
}
/**
* parse a ServiceDeregistration from an input stream.
*
* @param input
* the stream.
* @throws ServiceLocationException
* if something goes wrong.
*/
public ServiceDeregistration(final DataInputStream input)
throws ServiceLocationException, IOException {
scopeList = stringToList(input.readUTF(), ",");
url = ServiceURL.fromBytes(input);
attList = stringToList(input.readUTF(), ",");
if (SLPCore.CONFIG.getSecurityEnabled()) {
if (!verify()) {
throw new ServiceLocationException(
ServiceLocationException.AUTHENTICATION_FAILED,
"Authentication failed for " + toString());
}
}
}
/**
* get the bytes from a ServiceDeregistration:
* <p>
*
* <pre>
* 0 1 2 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Service Location header (function = SrvDeReg = 4) |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Length of <scope-list> | <scope-list> \
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | URL Entry \
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Length of <tag-list> | <tag-list> \
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* </pre>.
* </p>
*
* @return the bytes.
* @throws ServiceLocationException
* in case of IO errors.
*/
protected void writeTo(final DataOutputStream out) throws IOException {
super.writeHeader(out, getSize());
out.writeUTF(listToString(scopeList, ","));
url.writeTo(out);
out.writeUTF(listToString(attList, ","));
}
/**
* get the length of the message.
*
* @return the length of the message.
* @see ch.ethz.iks.slp.impl.SLPMessage#getSize()
*/
int getSize() {
return getHeaderSize() + 2 + listToString(scopeList, ",").length()
+ url.getLength() + 2
+ listToString(attList, ",").length();
}
/**
* sign this ServiceDeregistration.
*
* @param spiList
* a List of SPIs.
* @throws ServiceLocationException
* in case of IO errors.
*/
void sign(final List spiList) throws ServiceLocationException {
url.sign(spiList);
}
/**
* verify the ServiceDeregistration.
*
* @return true if it could be verified.
* @throws ServiceLocationException
* in case of IO errors.
*/
boolean verify() throws ServiceLocationException {
if (!url.verify()) {
return false;
}
return true;
}
}
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