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SemanticWebBuilder Portal API components and utilities
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/*
* SemanticWebBuilder es una plataforma para el desarrollo de portales y aplicaciones de integración,
* colaboración y conocimiento, que gracias al uso de tecnología semántica puede generar contextos de
* información alrededor de algún tema de interés o bien integrar información y aplicaciones de diferentes
* fuentes, donde a la información se le asigna un significado, de forma que pueda ser interpretada y
* procesada por personas y/o sistemas, es una creación original del Fondo de Información y Documentación
* para la Industria INFOTEC, cuyo registro se encuentra actualmente en trámite.
*
* INFOTEC pone a su disposición la herramienta SemanticWebBuilder a través de su licenciamiento abierto al público (‘open source’),
* en virtud del cual, usted podrá usarlo en las mismas condiciones con que INFOTEC lo ha diseñado y puesto a su disposición;
* aprender de él; distribuirlo a terceros; acceder a su código fuente y modificarlo, y combinarlo o enlazarlo con otro software,
* todo ello de conformidad con los términos y condiciones de la LICENCIA ABIERTA AL PÚBLICO que otorga INFOTEC para la utilización
* del SemanticWebBuilder 4.0.
*
* INFOTEC no otorga garantía sobre SemanticWebBuilder, de ninguna especie y naturaleza, ni implícita ni explícita,
* siendo usted completamente responsable de la utilización que le dé y asumiendo la totalidad de los riesgos que puedan derivar
* de la misma.
*
* Si usted tiene cualquier duda o comentario sobre SemanticWebBuilder, INFOTEC pone a su disposición la siguiente
* dirección electrónica:
* http://www.semanticwebbuilder.org
*/
package org.semanticwb.portal.resources;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.ProtocolException;
import java.net.URISyntaxException;
import java.net.URL;
import java.text.DecimalFormat;
import java.util.UUID;
import javax.activation.MimetypesFileTypeMap;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import org.semanticwb.Logger;
import org.semanticwb.SWBException;
import org.semanticwb.SWBPortal;
import org.semanticwb.SWBUtils;
import org.semanticwb.model.Resource;
import org.semanticwb.portal.api.GenericAdmResource;
import org.semanticwb.portal.api.SWBParamRequest;
import org.semanticwb.portal.api.SWBResourceException;
import org.semanticwb.portal.api.SWBResourceURL;
import org.w3c.dom.DOMException;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
/**
* Administra la descarga de contenidos, en forma de archivos de file system,
* incrementando un contador de las descargas realizadas del archivo asociado.
*
* @author Jorge Alberto Jiménez
*/
public class FileDownload extends GenericAdmResource
{
static class FileInfo
{
String content_length;
String content_type;
}
/*private static boolean isURL(String urlDownloadnew)
{
try
{
new URL(urlDownloadnew).;
return true;
}
catch (MalformedURLException e)
{
return false;
}
}*/
private static final long K = 1024;
private static final long M = K * K;
private static final long G = M * K;
private static final long T = G * K;
public static String convertToStringRepresentation(final long value)
{
final long[] dividers = new long[]
{
T, G, M, K, 1
};
final String[] units = new String[]
{
"TB", "GB", "MB", "KB", "B"
};
if (value < 1)
{
throw new IllegalArgumentException("Invalid file size: " + value);
}
String result = null;
for (int i = 0; i < dividers.length; i++)
{
final long divider = dividers[i];
if (value >= divider)
{
result = format(value, divider, units[i]);
break;
}
}
return result;
}
private static String format(final long value,
final long divider,
final String unit)
{
final double result
= divider > 1 ? (double) value / (double) divider : (double) value;
return new DecimalFormat("#,##0.#").format(result) + " " + unit;
}
private static String getFileName(URL url)
{
String file;
try
{
file = url.toURI().getPath();
}
catch (URISyntaxException ex)
{
return null;
}
int pos2 = file.lastIndexOf("/");
if (pos2 != -1)
{
file = file.substring(pos2 + 1);
if (file.contains("."))
{
return file;
}
else
{
return null;
}
}
else
{
return null;
}
}
private static boolean isURL(String urlDownloadnew)
{
try
{
new URL(urlDownloadnew);
return true;
}
catch (MalformedURLException e)
{
return false;
}
}
private static void download(URL url, OutputStream out)
{
HttpURLConnection connection;
try
{
connection = (HttpURLConnection) url.openConnection();
}
catch (IOException ex)
{
log.debug(ex);
return;
}
try
{
connection.setRequestMethod("GET");
}
catch (ProtocolException ex)
{
log.debug(ex);
return;
}
connection.setConnectTimeout(60000); //60 secs
connection.setReadTimeout(60000); //60 secs
try
{
if (connection.getResponseCode() != 200)
{
return;
}
}
catch (IOException ex)
{
log.debug(ex);
return;
}
InputStream stream;
try
{
stream = connection.getInputStream();
}
catch (IOException ex)
{
log.debug(ex);
return;
}
byte[] buffer = new byte[1024];
int read;
try
{
read = stream.read(buffer);
}
catch (IOException ex)
{
log.debug(ex);
return;
}
while (read != -1)
{
try
{
out.write(buffer, 0, read);
}
catch (IOException ex)
{
log.debug(ex);
return;
}
try
{
read = stream.read(buffer);
}
catch (IOException ex)
{
log.debug(ex);
return;
}
}
try
{
stream.close();
}
catch (IOException ex)
{
log.debug(ex);
return;
}
try
{
out.close();
}
catch (IOException ex)
{
log.debug(ex);
}
}
private static FileInfo getInfo(URL urlDownloadnew)
{
try
{
//URL urlDownloadnew = new URL("http://www.diputados.gob.mx/LeyesBiblio/pdf/111.pdf");
HttpURLConnection connection = (HttpURLConnection) urlDownloadnew.openConnection();
connection.setRequestMethod("HEAD");
connection.setConnectTimeout(60000); //60 secs
connection.setReadTimeout(60000); //60 secs
if (connection.getResponseCode() != 200)
{
return null;
}
String contentLength = connection.getHeaderField("Content-Length");
String contentType = connection.getHeaderField("Content-Type");
/*System.out.println("c: " + contentLength);
System.out.println("contentType: " + contentType);*/
FileInfo info = new FileInfo();
info.content_length = contentLength;
info.content_type = contentType;
return info;
}
catch (IOException e)
{
return null;
}
}
javax.xml.transform.Templates tpl;
private static final Logger log = SWBUtils.getLogger(FileDownload.class);
@Override
public void setResourceBase(Resource base)
{
try
{
super.setResourceBase(base);
}
catch (SWBResourceException e)
{
log.error("Error while setting resource base: " + base.getId() + "-" + base.getTitle(), e);
}
if (!"".equals(base.getAttribute("template", "").trim()))
{
try
{
tpl = SWBUtils.XML.loadTemplateXSLT(SWBPortal.getFileFromWorkPath(base.getWorkPath() + "/" + base.getAttribute("template").trim()));
}
catch (TransformerConfigurationException e)
{
log.error("Error while loading resource template: " + base.getId(), e);
}
catch (SWBException e)
{
log.error("Error while loading resource template: " + base.getId(), e);
}
}
//System.out.println("template: " + tpl);
if (tpl == null)
{
try
{
tpl = SWBUtils.XML.loadTemplateXSLT(SWBPortal.getAdminFileStream("/swbadmin/xsl/FileDownload/WBFileDownload.xslt"));
//System.out.println("template por defecto: " + tpl);
}
catch (TransformerConfigurationException e)
{
log.error("Error while loading default resource template: " + base.getId(), e);
}
}
}
//@Override
public void doView(javax.servlet.http.HttpServletRequest request,
javax.servlet.http.HttpServletResponse response,
SWBParamRequest reqParams) throws SWBResourceException, java.io.IOException
{
MimetypesFileTypeMap mimeTypesMap = new MimetypesFileTypeMap();
Resource base = this.getResourceBase();
try
{
String fileName = base.getAttribute("fileName", "").trim();
if (reqParams.getAction() == null || !reqParams.getAction().equals("download"))
{
SWBResourceURL wburl = reqParams.getRenderUrl();
wburl.setCallMethod(SWBResourceURL.Call_DIRECT);
wburl.setAction("download");
String text = base.getAttribute("text", "");
String architecture = base.getAttribute("architecture", "");
String historyUrl = base.getAttribute("historyUrl", "");
String fileName1 = base.getAttribute("fileName1", null);
if (fileName1 != null && !fileName1.trim().isEmpty() && (fileName1.startsWith("http://") || fileName1.startsWith("https://")) && isURL(fileName1))
{
URL url = new URL(fileName1);
String nameFileURL = getFileName(url);
if (nameFileURL != null)
{
FileInfo info = getInfo(url);
Document dom = SWBUtils.XML.getNewDocument();
Element el = dom.createElement("FileDownload");
el.setAttribute("text", text);
el.setAttribute("name", nameFileURL);
if (base.getAttribute("fileName1_uri", null) == null)
{
String uuid = UUID.randomUUID().toString();
base.setAttribute("fileName1_uri", uuid);
}
String uuid = base.getAttribute("fileName1_uri");
el.setAttribute("path", wburl.toString() + "/uridoc/" + uuid);
int length = 0;
if (info.content_length != null)
{
length = Integer.parseInt(info.content_length);
}
String ext = "SIN EXTENSION";
int pos = nameFileURL.lastIndexOf(".");
if (pos != -1)
{
ext = nameFileURL.substring(pos);
}
String size = "0";
if (length > 0)
{
size = convertToStringRepresentation(length);
}
el.setAttribute("length", size);
el.setAttribute("nHits", "" + base.getHits());
el.setAttribute("url", historyUrl);
el.setAttribute("tArchitecture", architecture);
el.setAttribute("textension", ext);
dom.appendChild(el);
if (tpl == null)
{
if (!"".equals(base.getAttribute("template", "").trim()))
{
try
{
tpl = SWBUtils.XML.loadTemplateXSLT(SWBPortal.getFileFromWorkPath(base.getWorkPath() + "/" + base.getAttribute("template").trim()));
}
catch (TransformerConfigurationException e)
{
log.error("Error while loading resource template: " + base.getId(), e);
}
catch (SWBException e)
{
log.error("Error while loading resource template: " + base.getId(), e);
}
}
else
{
//System.out.println("template: " + tpl);
try
{
InputStream input = SWBPortal.getAdminFileStream("/swbadmin/xsl/FileDownload/WBFileDownload.xslt");
if (input != null)
{
tpl = SWBUtils.XML.loadTemplateXSLT(input);
//} else {
// System.out.println("\nInputStream NULO!, no encuentra: /swbadmin/xsl/FileDownload/WBFileDownload.xslt");
}
}
catch (TransformerConfigurationException e)
{
log.error("Error while loading default resource template: " + base.getId(), e);
}
}
}
response.getWriter().print(SWBUtils.XML.transformDom(tpl, dom));
}
}
else
{
if(fileName==null || fileName.trim().isEmpty())
{
return;
}
fileName = SWBPortal.getWorkPath() + base.getWorkPath() + "/" + fileName;
java.io.File file = new java.io.File(fileName);
if(!file.exists())
{
return;
}
int pos = fileName.lastIndexOf("/");
if (pos > - 1)
{
fileName = fileName.substring(pos + 1);
}
String ext = "";
pos = fileName.lastIndexOf(".");
if (pos > -1)
{
ext = fileName.substring(pos);
}
Document dom = SWBUtils.XML.getNewDocument();
Element el = dom.createElement("FileDownload");
el.setAttribute("text", text);
el.setAttribute("name", fileName);
el.setAttribute("path", wburl.toString() + "/doc/" + base.getAttribute("fileName", "").trim());
String size = "0";
if (file.length() > 0)
{
size = convertToStringRepresentation(file.length());
}
el.setAttribute("length", size);
el.setAttribute("nHits", "" + base.getHits());
el.setAttribute("url", historyUrl);
el.setAttribute("tArchitecture", architecture);
el.setAttribute("textension", ext);
dom.appendChild(el);
//System.out.println("El DOM a utilizar: " + SWBUtils.XML.domToXml(dom));
/**
* Por ahora *
*/
if (tpl == null)
{
if (!"".equals(base.getAttribute("template", "").trim()))
{
try
{
tpl = SWBUtils.XML.loadTemplateXSLT(SWBPortal.getFileFromWorkPath(base.getWorkPath() + "/" + base.getAttribute("template").trim()));
}
catch (TransformerConfigurationException e)
{
log.error("Error while loading resource template: " + base.getId(), e);
}
catch (SWBException e)
{
log.error("Error while loading resource template: " + base.getId(), e);
}
}
else
{
//System.out.println("template: " + tpl);
try
{
InputStream input = SWBPortal.getAdminFileStream("/swbadmin/xsl/FileDownload/WBFileDownload.xslt");
if (input != null)
{
tpl = SWBUtils.XML.loadTemplateXSLT(input);
//} else {
// System.out.println("\nInputStream NULO!, no encuentra: /swbadmin/xsl/FileDownload/WBFileDownload.xslt");
}
}
catch (TransformerConfigurationException e)
{
log.error("Error while loading default resource template: " + base.getId(), e);
}
}
}
response.getWriter().print(SWBUtils.XML.transformDom(tpl, dom));
}
}
else
{
int pos = request.getRequestURI().indexOf("/uridoc/");
if (pos != -1)
{
String uri = request.getRequestURI().substring(pos + 8);
if (uri == null || uri.trim().isEmpty())
{
return;
}
if (base.getAttribute("fileName1_uri", null) == null)
{
String uuid = UUID.randomUUID().toString();
base.setAttribute("fileName1_uri", uuid);
}
String uuid2 = base.getAttribute("fileName1_uri", null);
if (!uri.equals(uuid2))
{
return;
}
String fileName1 = base.getAttribute("fileName1", null);
URL url = new URL(fileName1);
if (fileName1 != null && !fileName1.trim().isEmpty() && isURL(fileName1))
{
String nameFileURL = getFileName(url);
if (nameFileURL != null)
{
FileInfo info = getInfo(url);
String contentLength = "0";
if (info.content_length != null)
{
contentLength = "" + Integer.parseInt(info.content_length);
}
String contentType;
if (info.content_type != null)
{
contentType = info.content_type;
}
else
{
contentType=mimeTypesMap.getContentType(nameFileURL);
if(contentType==null)
{
contentType = "application/binary";
}
}
response.setHeader("Content-Length", contentLength);
response.setHeader("Content-Disposition", "attachment;filename=" + nameFileURL);
response.setContentType(contentType);
base.addHit(request, reqParams.getUser(), reqParams.getWebPage());
download(url, response.getOutputStream());
return;
}
else
{
return;
}
}
else
{
return;
}
}
pos = request.getRequestURI().indexOf("/doc/");
if (pos > -1)
{
fileName = request.getRequestURI().substring(pos + 5);
}
response.setHeader("Content-Disposition", "attachment;filename=" + fileName);
fileName = SWBPortal.getWorkPath() + base.getWorkPath() + "/" + fileName;
java.io.File file = new java.io.File(fileName);
response.setHeader("Content-Length", file.length() + "");
String mimeType=mimeTypesMap.getContentType(file);
if(mimeType==null)
{
mimeType="application/binary";
}
response.setContentType(mimeType);
base.addHit(request, reqParams.getUser(), reqParams.getWebPage());
SWBUtils.IO.copyStream(new FileInputStream(fileName), response.getOutputStream());
}
}
catch (IOException e)
{
log.error("At responding file download request", e);
}
catch (NumberFormatException e)
{
log.error("At responding file download request", e);
}
catch (TransformerException e)
{
log.error("At responding file download request", e);
}
catch (DOMException e)
{
log.error("At responding file download request", e);
}
}
}
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