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/*
* ====================================================================
* Project: openMDX/Core, http://www.openmdx.org/
* Description: URL Decoder
* Owner: OMEX AG, Switzerland, http://www.omex.ch
* ====================================================================
*
* This software is published under the BSD license as listed below.
*
* Copyright (c) 2019, OMEX AG, Switzerland
* 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 the openMDX team 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.
*
* ------------------
*
* This product includes software developed by other organizations as
* listed in the NOTICE file.
*/
package org.openmdx.base.naming;
import org.openmdx.base.exception.RuntimeServiceException;
import org.openmdx.kernel.exception.BasicException;
import org.openmdx.kernel.xri.XRIAuthorities;
/**
* URL Decoder
*/
public class URLDecoder {
/**
* Constructor
*
* @param contextURL
* the context URL without trailing '/'
*/
public URLDecoder(String contextURL) {
this.contextURL = contextURL;
}
/**
* the context URL without trailing '/'
*/
private final String contextURL;
/**
* Extracts the URL encoded XRI by adding the openMDX authority sub-segment if necessary
*
* @param url
* the encoded URL
*
* @return the decoded XRI
*
* @throws NullPointerException
* if either argument is {@code null}
* @throws RuntimeServiceException
* if the {@code url} does not start with the {@code contextURL}
*/
public Path decode(String url) {
if (!url.startsWith(contextURL)) {
throw new RuntimeServiceException(
BasicException.Code.DEFAULT_DOMAIN,
BasicException.Code.BAD_PARAMETER,
"The URL does not start with the expected context URL",
new BasicException.Parameter("contextURL", contextURL),
new BasicException.Parameter("url", url)
);
}
return new Path(prependFirstSubsegmentIfNecessary(url.substring(contextURL.length())));
}
private String prependFirstSubsegmentIfNecessary(String pathInfo) {
if (pathInfo.isEmpty()) {
return XRIAuthorities.OPENMDX_AUTHORITY;
}
final String tail = pathInfo.substring(1);
if (tail.startsWith(XRIAuthorities.OPENMDX_AUTHORITY)) {
return tail;
}
final String separator = tail.startsWith("!") ? "" : "*";
return XRIAuthorities.OPENMDX_AUTHORITY + separator + tail;
}
/**
* Retrieve the context URL.
*
* @return Returns the context URL
*/
public String getContextURL() {
return this.contextURL;
}
}
