103 lines
3.5 KiB
Java
103 lines
3.5 KiB
Java
package org.gcube.portlets.user.reportgenerator.server.servlet;
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import java.io.DataInputStream;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import javax.servlet.ServletException;
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import javax.servlet.ServletOutputStream;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import org.gcube.application.framework.core.session.ASLSession;
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import org.gcube.application.framework.core.session.SessionManager;
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import org.gcube.common.homelibary.model.items.type.FolderItemType;
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import org.gcube.common.homelibrary.home.HomeLibrary;
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import org.gcube.common.homelibrary.home.workspace.Workspace;
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import org.gcube.common.homelibrary.home.workspace.folder.FolderItem;
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import org.gcube.common.homelibrary.home.workspace.folder.items.Report;
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import org.gcube.common.homelibrary.home.workspace.folder.items.ReportTemplate;
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import org.gcube.common.homelibrary.util.encryption.EncryptionUtil;
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import org.gcube.portal.custom.scopemanager.scopehelper.ScopeHelper;
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@SuppressWarnings("serial")
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public class DownloadEncryptedReport extends HttpServlet {
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@Override
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protected void doGet(HttpServletRequest request,
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HttpServletResponse response) throws ServletException, IOException {
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FolderItem item = null;
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File tmpFile = File.createTempFile("report", "texz");
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String fileName = null;
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InputStream data = null;
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try {
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Workspace workspace = HomeLibrary.getUserWorkspace(getASLSession(request).getUsername());
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item = (FolderItem)workspace.getItem(request.getParameter("itemId"));
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if (item.getFolderItemType() == FolderItemType.REPORT) {
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Report report = (Report)item;
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data = report.getData();
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} else {
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ReportTemplate template = (ReportTemplate)item;
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data = template.getData();
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}
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fileName = item.getName() + ".texz";
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EncryptionUtil util = new EncryptionUtil();
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FileOutputStream out = new FileOutputStream(tmpFile);
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util.encrypt(data, out);
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} catch (Exception e) {
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throw new ServletException(e);
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}
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int length = 0;
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ServletOutputStream outStream = response.getOutputStream();
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String mimetype = "application/octet-stream";
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response.setContentType(mimetype);
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response.setContentLength((int)tmpFile.length());
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// sets HTTP header
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response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");
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byte[] byteBuffer = new byte[1024];
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DataInputStream in = new DataInputStream(new FileInputStream(tmpFile));
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// reads the file's bytes and writes them to the response stream
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while ((in != null) && ((length = in.read(byteBuffer)) != -1))
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{
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outStream.write(byteBuffer,0,length);
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}
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in.close();
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outStream.close();
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}
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/**
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* the current ASLSession
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* @return .
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*/
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private ASLSession getASLSession(HttpServletRequest request) {
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String sessionID = request.getSession().getId();
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String user = (String) request.getSession().getAttribute(ScopeHelper.USERNAME_ATTRIBUTE);
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if (user == null) {
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user = "massimiliano.assante";
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request.getSession().setAttribute(ScopeHelper.USERNAME_ATTRIBUTE, user);
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SessionManager.getInstance().getASLSession(sessionID, user).setScope("/gcube/devsec");
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}
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return SessionManager.getInstance().getASLSession(sessionID, user);
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}
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}
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