140 lines
4.9 KiB
Java
140 lines
4.9 KiB
Java
/**
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*
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*/
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package org.gcube.datatransfer.resolver;
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import java.io.IOException;
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import javax.servlet.Filter;
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import javax.servlet.FilterChain;
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import javax.servlet.FilterConfig;
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import javax.servlet.ServletException;
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import javax.servlet.ServletRequest;
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import javax.servlet.ServletResponse;
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import javax.servlet.http.HttpServletRequest;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* The Class UriResolverRewriteFilter.
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*
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* @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
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* Dec 5, 2016
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*/
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public class UriResolverRewriteFilter implements Filter{
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/**
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*
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*/
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public static final String SERVLET_URI_RESOLVER = "/uri-resolver";
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private static final String PATH_SEPARATOR = "/";
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public static final String SERVLET_GEONETWORK = "/geonetwork";
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public static final String PARAMETER_FILTER_PUBLIC_IDS = "filterpublicids";
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public static final String PARAMETER_NO_AUTHENTICATION = "noauthentication";
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public static final String REQUEST_PARAMETER_SEPARATOR = "#";
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public static final String PARAMETER_SMP_ID = "smp-id";
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public static final String SERVLET_STORAGE_ID = "id";
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public static final String PARAMETER_CATALOGUE_LINK = "cl";
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public static final String SERVLET_CATALOGUE = "/catalogue";
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protected static final Logger logger = LoggerFactory.getLogger(UriResolverRewriteFilter.class);
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private FilterConfig config;
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/**
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* Gets the config.
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*
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* @return the config
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*/
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public FilterConfig getConfig() {
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return config;
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}
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/* (non-Javadoc)
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* @see javax.servlet.Filter#destroy()
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*/
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@Override
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public void destroy() {
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logger.trace("run destroy");
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}
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/* (non-Javadoc)
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* @see javax.servlet.Filter#doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse, javax.servlet.FilterChain)
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*/
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@Override
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public void doFilter(ServletRequest req, ServletResponse response, FilterChain chain) throws IOException, ServletException {
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/* wrap the request in order to read the inputstream multiple times */
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MultiReadHttpServletRequest multiReadRequest = new MultiReadHttpServletRequest((HttpServletRequest) req);
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String requestURI = multiReadRequest.getRequestURI();
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String queryString = multiReadRequest.getQueryString();
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logger.debug("Request URI: " + requestURI + ", QueryString: " +queryString+ ", Servlet path: "+multiReadRequest.getServletPath());
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//IS A REQUEST FOR GEONETWORK AUTHENTICATION? (CKAN HARVESTING?)
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if(multiReadRequest.getServletPath().startsWith(SERVLET_GEONETWORK) || multiReadRequest.getServletPath().startsWith(SERVLET_URI_RESOLVER+SERVLET_GEONETWORK)){
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logger.debug("is geonetwork request");
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GeonetworkRequestDecoder grd = new GeonetworkRequestDecoder(multiReadRequest.getServletPath(), queryString);
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logger.debug("forward to: "+grd.getNewURI());
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multiReadRequest.getRequestDispatcher(grd.getNewURI()).forward(multiReadRequest, response);
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}else if(multiReadRequest.getServletPath().startsWith(SERVLET_CATALOGUE) || multiReadRequest.getServletPath().startsWith(SERVLET_URI_RESOLVER+SERVLET_CATALOGUE)){
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logger.debug("is a catalogue request");
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int lastSlash = requestURI.lastIndexOf(PATH_SEPARATOR);
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String toCatalogueLink = requestURI.substring(lastSlash + 1, requestURI.length());
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String newURI = SERVLET_CATALOGUE + "?" + PARAMETER_CATALOGUE_LINK + "=" + toCatalogueLink;
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logger.debug("forward to: " + newURI);
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multiReadRequest.getRequestDispatcher(newURI).forward(multiReadRequest, response);
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//chain.doFilter(multiReadRequest, response);
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}else{
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//IS WORKSPACE REQUEST?
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if (queryString == null) { // IS A /XXXXX
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logger.debug("QueryString is null, is It a new SMP public uri by ID?");
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int lastSlash = requestURI.lastIndexOf(PATH_SEPARATOR);
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if (lastSlash + 1 == requestURI.length()) {
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logger.debug("'/' is last index, doFilter Request");
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// req.getRequestDispatcher("/").forward(req, res);
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chain.doFilter(multiReadRequest, response);
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}
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else {
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String toStorageID = requestURI.substring(lastSlash + 1, requestURI.length());
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// String newURI = requestURI.replace(toReplace,
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// SERVLET_RESOLVER_BY_ID+"?"+SMP_ID+"="+toReplace);
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String newURI = SERVLET_STORAGE_ID + "?" + PARAMETER_SMP_ID + "=" + toStorageID;
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logger.debug("forward to: " + newURI);
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multiReadRequest.getRequestDispatcher(newURI).forward(multiReadRequest, response);
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}
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}
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else {
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logger.debug("is NOT a SMP public uri by ID, doFilter Request");
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chain.doFilter(multiReadRequest, response);
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}
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}
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}
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/**
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* Gets the scope.
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*
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* @param scope the scope
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* @return the scope
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*/
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private static String getScope(String scope){
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logger.debug("Read scope path: "+scope);
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// String scope = servletPath.substring(servletPath.indexOf("/"), servletPath.length());
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return PATH_SEPARATOR+scope.replaceAll("_", PATH_SEPARATOR);
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}
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/* (non-Javadoc)
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* @see javax.servlet.Filter#init(javax.servlet.FilterConfig)
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*/
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@Override
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public void init(FilterConfig config) throws ServletException {
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logger.trace("run init");
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this.config = config;
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}
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}
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