root / src / org / gss_project / gss / server / webdav / milton / GSSResourceFactory.java @ 1206:292dec4eae08
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/*
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* Copyright 2011 Electronic Business Systems Ltd.
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*
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* This file is part of GSS.
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*
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* GSS is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GSS is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GSS. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.gss_project.gss.server.webdav.milton; |
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import static org.gss_project.gss.server.configuration.GSSConfigurationFactory.getConfiguration; |
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import org.gss_project.gss.common.exceptions.ObjectNotFoundException; |
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import org.gss_project.gss.common.exceptions.RpcException; |
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import org.gss_project.gss.server.domain.FileHeader; |
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import org.gss_project.gss.server.domain.Folder; |
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import org.gss_project.gss.server.domain.User; |
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import org.gss_project.gss.server.ejb.ExternalAPI; |
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import org.gss_project.gss.server.ejb.TransactionHelper; |
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import java.util.Date; |
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import java.util.concurrent.Callable; |
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import javax.naming.Context; |
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import javax.naming.InitialContext; |
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import javax.naming.NamingException; |
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import javax.rmi.PortableRemoteObject; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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import com.bradmcevoy.http.HttpManager; |
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import com.bradmcevoy.http.Resource; |
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import com.bradmcevoy.http.ResourceFactory; |
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import com.bradmcevoy.http.SecurityManager; |
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import com.ettrema.http.fs.LockManager; |
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/**
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* @author kman
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*
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*/
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public class GSSResourceFactory implements ResourceFactory { |
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private static final Logger log = LoggerFactory.getLogger(GSSResourceFactory.class); |
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public static final String OTHERS="OthersShared"; |
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SecurityManager securityManager;
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LockManager lockManager; |
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Long maxAgeSeconds;
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String contextPath;
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boolean allowDirectoryBrowsing;
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String defaultPage;
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HttpManager httpManager; |
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@Override
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public Resource getResource(String host, String url) { |
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log.debug("getResource: host: " + host + " - url:" + url); |
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url = stripContext(url); |
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if(url==null||url.trim().equals("")||url.equals("/")){ |
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url="/";
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} |
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/*//log.info("URL:"+url);
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if(url.equals("/OthersShared")||url.equals("/OthersShared/")){
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//log.info("[returning others]");
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return new GssOthersResource(host, this);
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}
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if(url.startsWith("/OthersShared")){
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}*/
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try {
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User user =null;
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if(HttpManager.request().getAuthorization()!=null && HttpManager.request().getAuthorization().getTag()==null){ |
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String username = HttpManager.request().getAuthorization().getUser();
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if(username !=null) |
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user = getService().getUserByUserName(username); |
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} |
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else if(HttpManager.request().getAuthorization()!=null&&HttpManager.request().getAuthorization().getTag()!=null){ |
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user =(User) HttpManager.request().getAuthorization().getTag(); |
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} |
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if(user==null){ |
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return new GssRootFolderResource(host, this, null,url); |
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} |
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if(url.equals("/"+OTHERS)||url.equals("/"+OTHERS+"/")){ |
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return new GssOthersResource(host, this); |
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} |
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if(url.startsWith("/"+OTHERS)&&url.split("/").length==3){ |
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String username = url.split("/")[2]; |
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User userother = getService().getUserByUserName(username); |
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if(userother!=null) |
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return new GssOtherUserResource(host, this,userother ); |
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return null; |
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} |
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if(url.startsWith("/"+OTHERS)&&url.split("/").length>3){ |
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String username = url.split("/")[2]; |
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User userother = getService().getUserByUserName(username); |
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String newUrl = url.replace("/"+OTHERS+"/"+username, ""); |
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if(userother==null) |
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return null; |
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Object r = getResourceGss(newUrl,userother);
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if(r==null){ |
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return null; |
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} |
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if(r instanceof Folder){ |
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return new GssFolderResource(host, this,r ,user); |
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} |
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else
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return new GssFileResource(host, this,r,user); |
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} |
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Object r = getResourceGss(url,user);
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if(r==null){ |
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return null; |
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} |
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if(r instanceof Folder){ |
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return new GssFolderResource(host, this,r ,user); |
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} |
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else
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return new GssFileResource(host, this,r,user); |
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} catch (RpcException e) {
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log.error("unable to access ejb service",e);
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} |
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return null; |
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} |
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public Long maxAgeSeconds(GssResource resource) { |
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return maxAgeSeconds;
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} |
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protected Object getResourceGss(String path, User user) throws RpcException{ |
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if(user ==null){ |
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if(HttpManager.request().getAuthorization()!=null && HttpManager.request().getAuthorization().getTag()==null){ |
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String username = HttpManager.request().getAuthorization().getUser();
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if(username !=null) |
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user = getService().getUserByUserName(username); |
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} |
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else if(HttpManager.request().getAuthorization()!=null&&HttpManager.request().getAuthorization().getTag()!=null){ |
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user =(User) HttpManager.request().getAuthorization().getTag(); |
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} |
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} |
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if(user==null){ |
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return null; |
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} |
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boolean exists = true; |
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Object resource = null; |
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try {
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resource = getService().getResourceAtPath(user.getId(), path, true);
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} catch (ObjectNotFoundException e) {
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exists = false;
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} catch (RpcException e) {
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return null; |
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} |
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if (!exists) {
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return null; |
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} |
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if(resource instanceof Folder){ |
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try {
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resource = getService().expandFolder((Folder) resource); |
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} catch (ObjectNotFoundException e) {
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// TODO Auto-generated catch block
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return null; |
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} |
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} |
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else if(resource instanceof FileHeader){ |
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try {
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resource = getService().expandFile((FileHeader) resource); |
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} catch (ObjectNotFoundException e) {
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// TODO Auto-generated catch block
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return null; |
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} |
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} |
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return resource;
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} |
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private String stripContext( String url ) { |
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if( this.contextPath != null && contextPath.length() > 0 ) { |
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url = url.replaceFirst( '/' + contextPath, ""); |
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log.debug( "stripped context: " + url);
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return url;
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} else {
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return url;
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} |
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} |
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/**
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* For a provided path, remove the last element and return the rest, that is
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* the path of the parent folder.
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*
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* @param path the specified path
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* @return the path of the parent folder
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* @throws ObjectNotFoundException if the provided string contains no path
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* delimiters
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*/
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protected String getParentPath(String path) throws ObjectNotFoundException { |
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int lastDelimiter = path.lastIndexOf('/'); |
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if (lastDelimiter == 0) |
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return "/"; |
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if (lastDelimiter == -1) |
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// No path found.
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throw new ObjectNotFoundException("There is no parent in the path: " + path); |
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else if (lastDelimiter < path.length() - 1) |
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// Return the part before the delimiter.
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return path.substring(0, lastDelimiter); |
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else {
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// Remove the trailing delimiter and then recurse.
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String strippedTrail = path.substring(0, lastDelimiter); |
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return getParentPath(strippedTrail);
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} |
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} |
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/**
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* A helper method that retrieves a reference to the ExternalAPI bean and
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* stores it for future use.
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*
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* @return an ExternalAPI instance
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* @throws RpcException in case an error occurs
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*/
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protected ExternalAPI getService() throws RpcException { |
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try {
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final Context ctx = new InitialContext(); |
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final Object ref = ctx.lookup(getConfiguration().getString("externalApiPath")); |
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return (ExternalAPI) PortableRemoteObject.narrow(ref, ExternalAPI.class); |
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} catch (final NamingException e) { |
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log.error("Unable to retrieve the ExternalAPI EJB", e);
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throw new RpcException("An error occurred while contacting the naming service"); |
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} |
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} |
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private void updateAccounting(final User user, final Date date, final long bandwidthDiff) { |
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try {
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new TransactionHelper<Void>().tryExecute(new Callable<Void>() { |
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@Override
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public Void call() throws Exception { |
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getService().updateAccounting(user, date, bandwidthDiff); |
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return null; |
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} |
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}); |
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} catch (RuntimeException e) { |
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throw e;
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} catch (Exception e) { |
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// updateAccounting() doesn't throw any checked exceptions
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assert false; |
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} |
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} |
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/**
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* Retrieve the securityManager.
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*
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* @return the securityManager
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*/
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public SecurityManager getSecurityManager() { |
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return securityManager;
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} |
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/**
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* Retrieve the lockManager.
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*
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* @return the lockManager
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*/
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public LockManager getLockManager() {
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return lockManager;
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} |
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/**
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* Retrieve the maxAgeSeconds.
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*
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* @return the maxAgeSeconds
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*/
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public Long getMaxAgeSeconds() { |
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return maxAgeSeconds;
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} |
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/**
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* Retrieve the contextPath.
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*
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* @return the contextPath
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*/
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public String getContextPath() { |
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return contextPath;
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} |
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/**
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* Retrieve the allowDirectoryBrowsing.
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*
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* @return the allowDirectoryBrowsing
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*/
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public boolean isAllowDirectoryBrowsing() { |
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return allowDirectoryBrowsing;
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} |
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/**
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* Retrieve the defaultPage.
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*
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* @return the defaultPage
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*/
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public String getDefaultPage() { |
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return defaultPage;
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} |
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public String getRealm(String host) { |
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return securityManager.getRealm(host);
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} |
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/**
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* Modify the securityManager.
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*
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* @param securityManager the securityManager to set
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*/
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public void setSecurityManager(SecurityManager securityManager) { |
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this.securityManager = securityManager;
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} |
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/**
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* Modify the lockManager.
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*
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* @param lockManager the lockManager to set
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*/
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public void setLockManager(LockManager lockManager) { |
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this.lockManager = lockManager;
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} |
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/**
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* Modify the maxAgeSeconds.
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*
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* @param maxAgeSeconds the maxAgeSeconds to set
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*/
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public void setMaxAgeSeconds(Long maxAgeSeconds) { |
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this.maxAgeSeconds = maxAgeSeconds;
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} |
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/**
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* Modify the contextPath.
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*
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* @param contextPath the contextPath to set
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*/
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public void setContextPath(String contextPath) { |
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this.contextPath = contextPath;
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} |
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/**
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* Modify the defaultPage.
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*
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* @param defaultPage the defaultPage to set
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*/
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public void setDefaultPage(String defaultPage) { |
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this.defaultPage = defaultPage;
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} |
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/**
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* Retrieve the httpManager.
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*
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* @return the httpManager
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*/
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public HttpManager getHttpManager() {
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return httpManager;
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} |
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/**
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* Modify the httpManager.
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*
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* @param httpManager the httpManager to set
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*/
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public void setHttpManager(HttpManager httpManager) { |
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this.httpManager = httpManager;
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} |
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public static String getUsernameFromAuthHeader(String header) { |
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String first = header.split(",")[0]; |
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int indx = first.indexOf("\""); |
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return first.substring(indx+1,first.length()-1); |
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} |
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} |