svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.compat / org.gvsig.compat.se / src / main / java / org / gvsig / compat / se / net / SEDownloader.java @ 40559
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/**
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* gvSIG. Desktop Geographic Information System.
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*
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* Copyright (C) 2007-2013 gvSIG Association.
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*
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* This program is free software; you can redistribute it and/or
|
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* modify it under the terms of the GNU General Public License
|
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* as published by the Free Software Foundation; either version 3
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* of the License, or (at your option) any later version.
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*
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* This program 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 this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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* For any additional information, do not hesitate to contact us
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* at info AT gvsig.com, or visit our website www.gvsig.com.
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*/
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package org.gvsig.compat.se.net; |
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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*
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* This program is free software; you can redistribute it and/or
|
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* modify it under the terms of the GNU General Public License
|
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* as published by the Free Software Foundation; either version 2
|
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* of the License, or (at your option) any later version.
|
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*
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* This program 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 this program; if not, write to the Free Software
|
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*
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* For more information, contact:
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*
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* Generalitat Valenciana
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* Conselleria d'Infraestructures i Transport
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* Av. Blasco Ib??ez, 50
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* 46010 VALENCIA
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* SPAIN
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*
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* +34 963862235
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* gvsig@gva.es
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* www.gvsig.gva.es
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*
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* or
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*
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* IVER T.I. S.A
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* Salamanca 50
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* 46005 Valencia
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* Spain
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*
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* +34 963163400
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* dac@iver.es
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*/
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import java.io.BufferedOutputStream; |
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import java.io.DataInputStream; |
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import java.io.DataOutputStream; |
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import java.io.File; |
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import java.io.FileNotFoundException; |
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import java.io.FileOutputStream; |
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import java.io.IOException; |
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import java.io.OutputStreamWriter; |
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import java.net.ConnectException; |
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import java.net.HttpURLConnection; |
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import java.net.URI; |
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import java.net.URL; |
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import java.net.UnknownHostException; |
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import java.security.KeyManagementException; |
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import java.security.NoSuchAlgorithmException; |
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import java.util.Hashtable; |
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import java.util.prefs.Preferences; |
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import javax.net.ssl.HttpsURLConnection; |
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import javax.net.ssl.SSLContext; |
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import javax.net.ssl.TrustManager; |
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import javax.net.ssl.X509TrustManager; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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import org.gvsig.compat.net.ICancellable; |
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/**
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* Clase con m?todos de utilidad en el protocolo WMS
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*
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* @authors Laura D?az, jaume dominguez faus
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*/
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public class SEDownloader implements org.gvsig.compat.net.Downloader{ |
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String characters;
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boolean canceled;
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final long latency = 500; |
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private static int count = 0; |
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private static Logger LOG = LoggerFactory.getLogger(SEDownloader.class); |
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/**
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* Used to cancel a group of files
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* <b>key</b>: Group id, <b>value</b>: Boolean (true if
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* the group has to be canceled. Otherwise it is
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* false)
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*/
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Hashtable canceledGroup = new Hashtable(); |
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/**
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* <b>key</b>: URL, <b>value</b>: path to the downloaded file.
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*/
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Hashtable cachedURItoFile;
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Exception downloadException;
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final String tempDirectoryPath = System.getProperty("java.io.tmpdir")+"/tmp-andami"; |
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public SEDownloader() {
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super();
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characters = "";
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for (int j = 32; j<=127; j++){ |
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characters += (char) j;
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} |
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characters += "?????????????????????????????????????????????????\n\r\f\t??";
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} |
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/**
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* Return the content of a file that has been created
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* from a URL using the HTTP GET protocol
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* @param url
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* The URL
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* @return
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* File containing this URL's content or null if no file was found.
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*/
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private File getPreviousDownloadedURL(URL url){ |
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return getPreviousDownloaded(url);
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} |
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/**
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* Return the content of a file that has been created
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* from a URL using the HTTP POST protocol
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* @param url
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* The URL
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* @param data
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* The data to send on the query
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* @return
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* File containing this URL's content or null if no file was found.
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*/
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private File getPreviousDownloadedURL(URL url, String data) { |
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if(data == null) |
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return getPreviousDownloaded(url);
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return getPreviousDownloaded(url.toString() + data);
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} |
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/**
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* Returns the content of a URL as a file from the file system.<br>
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* <p>
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* If the URL has been already downloaded in this session and notified
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* to the system using the static <b>Utilities.addDownloadedURL(URL)</b>
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* method, it can be restored faster from the file system avoiding to
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* download it again.
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* </p>
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* @param url
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* @return File containing this URL's content or null if no file was found.
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*/
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private File getPreviousDownloaded(Object theurl) { |
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File f = null; |
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Object thekey = null; |
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try {
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if (theurl instanceof URL) { |
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thekey = ((URL) theurl).toURI();
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} else {
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thekey = theurl; |
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} |
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} catch (Exception e) { |
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LOG.info("Warning: did not check url: " + theurl, e);
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return null; |
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} |
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if (cachedURItoFile != null && cachedURItoFile.containsKey(thekey)) { |
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String filePath = (String) cachedURItoFile.get(thekey); |
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f = new File(filePath); |
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if (!f.exists())
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return null; |
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} |
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return f;
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} |
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/**
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* Adds an URL to the table of downloaded files for further uses. If the URL
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* already exists in the table its filePath value is updated to the new one and
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* the old file itself is removed from the file system.
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*
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* @param url
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* @param filePath
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*/
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void addDownloadedURL(URL url, String filePath) { |
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if (cachedURItoFile == null) |
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cachedURItoFile = new Hashtable(); |
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URI theuri = null; |
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try {
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theuri = url.toURI(); |
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} catch (Exception e) { |
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LOG.info("Warning: did not cache bad url: " + url, e);
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return;
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} |
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String fileName = (String) cachedURItoFile.put(theuri, filePath); |
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//JMV: No se puede eliminar el anterior porque puede que alguien lo
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// este usando
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/*
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if (fileName!=null){
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File f = new File(fileName);
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if (f.exists())
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f.delete();
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}
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*/
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} |
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/**
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* Downloads an URL into a temporary file that is removed the next time the
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* tempFileManager class is called, which means the next time gvSIG is launched.
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*
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* @param url
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* @param name
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* @return
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* @throws IOException
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* @throws ServerErrorResponseException
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* @throws ConnectException
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* @throws UnknownHostException
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*/
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public synchronized File downloadFile(URL url, String name, ICancellable cancel) throws IOException,ConnectException, UnknownHostException { |
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File f = null; |
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if ((f = getPreviousDownloadedURL(url)) == null) { |
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File tempDirectory = new File(tempDirectoryPath); |
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if (!tempDirectory.exists())
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tempDirectory.mkdir(); |
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f = new File(calculateFileName(name)); |
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if (cancel == null) { |
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cancel = new ICancellable() {
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public boolean isCanceled() { |
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return false; |
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} |
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public Object getID(){ |
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return SEDownloader.class.getName();
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} |
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}; |
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} |
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Monitor monitorObj = new Monitor(this, cancel); |
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Thread downloader = new Thread(new Downloader(this, url, f, cancel.getID())); |
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Thread monitor = new Thread(monitorObj); |
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monitor.start(); |
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downloader.start(); |
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while(!getCanceled(cancel.getID()) && downloader.isAlive()) {
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try {
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Thread.sleep(latency);
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} catch (InterruptedException e) { |
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LOG.error("Error", e);
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} |
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} |
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try {
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monitorObj.setFinish(true);
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monitor.join(); |
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downloader.join(); |
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} catch (InterruptedException e1) { |
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LOG.warn(e1.getMessage()); |
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} |
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downloader = null;
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monitor = null;
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if (getCanceled(cancel.getID()))
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return null; |
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downloader = null;
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monitor = null;
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if (this.downloadException != null) { |
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Exception e = this.downloadException; |
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if (e instanceof FileNotFoundException) |
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throw (IOException) e; |
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else if (e instanceof IOException) |
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throw (IOException) e; |
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else if (e instanceof ConnectException) |
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throw (ConnectException) e; |
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else if (e instanceof UnknownHostException) |
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throw (UnknownHostException) e; |
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} |
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} else {
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LOG.info(url.toString() + " cached at '" + f.getAbsolutePath() + "'"); |
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} |
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return f;
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} |
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private String calculateFileName(String name) { |
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count ++; |
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int index = name.lastIndexOf("."); |
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if (index > 0){ |
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return tempDirectoryPath + "/" + name.substring(0,index) + System.currentTimeMillis() + count + |
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name.substring(index, name.length()); |
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} |
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return tempDirectoryPath + "/" + name + System.currentTimeMillis() + count; |
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} |
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/**
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* Downloads a URL using the HTTP Post protocol
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* @param url
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* The server URL
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* @param data
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* The data to send in the request
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* @param name
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* A common name for all the retrieved files
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* @param cancel
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* Used to cancel the downloads
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* @return
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* The retrieved file
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* @throws IOException
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* @throws ConnectException
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* @throws UnknownHostException
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*/
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public synchronized File downloadFile(URL url, String data, String name, ICancellable cancel) throws IOException,ConnectException, UnknownHostException{ |
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File f = null; |
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if ((f = getPreviousDownloadedURL(url,data)) == null) { |
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File tempDirectory = new File(tempDirectoryPath); |
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if (!tempDirectory.exists())
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tempDirectory.mkdir(); |
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f = new File(calculateFileName(name)); |
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if (cancel == null) { |
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cancel = new ICancellable() {
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public boolean isCanceled() { |
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return false; |
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} |
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public Object getID(){ |
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return SEDownloader.class.getName();
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} |
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}; |
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} |
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Monitor monitorObj = new Monitor(this, cancel); |
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Thread downloader = new Thread(new Downloader(this, url, data, f, cancel.getID())); |
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Thread monitor = new Thread(monitorObj); |
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monitor.start(); |
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downloader.start(); |
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while(!getCanceled(cancel.getID()) && downloader.isAlive()) {
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try {
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Thread.sleep(latency);
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} catch (InterruptedException e) { |
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LOG.error("Error", e);
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} |
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} |
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try {
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monitorObj.setFinish(true);
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monitor.join(); |
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downloader.join(); |
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} catch (InterruptedException e1) { |
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LOG.warn(e1.getMessage()); |
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} |
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downloader = null;
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monitor = null;
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if (getCanceled(cancel.getID()))
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return null; |
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if (this.downloadException!=null) { |
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Exception e = this.downloadException; |
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if (e instanceof FileNotFoundException) |
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throw (IOException) e; |
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else if (e instanceof IOException) |
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throw (IOException) e; |
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else if (e instanceof ConnectException) |
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throw (ConnectException) e; |
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else if (e instanceof UnknownHostException) |
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throw (UnknownHostException) e; |
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} |
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} else {
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LOG.info(url.toString() + " cached at '" + f.getAbsolutePath() + "'"); |
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} |
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return f;
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} |
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/**
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* Try if a group of downloads has been canceled
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* @param groupId
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* Group id
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* @return
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* If the group has been canceled
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*/
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protected boolean getCanceled(Object groupId) { |
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Object obj = canceledGroup.get(groupId);
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if (obj != null) { |
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return ((Boolean)obj).booleanValue(); |
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} |
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return false; |
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} |
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|
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/**
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* Cancel a group of downloads
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* @param groupId
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* Group id
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* @param isCanceled
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* if the group has to be canceled
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*/
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protected void setCanceled(Object groupId, boolean isCanceled) { |
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if (groupId == null) { |
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groupId = SEDownloader.class.getName(); |
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} |
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canceledGroup.put(groupId,new Boolean(isCanceled)); |
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} |
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|
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/**
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* Cleans every temporal file previously downloaded.
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*/
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public void cleanUpTempFiles() { |
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try{
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File tempDirectory = new File(tempDirectoryPath); |
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|
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File[] files = tempDirectory.listFiles(); |
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if (files!=null) { |
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for (int i = 0; i < files.length; i++) { |
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// s?lo por si en un futuro se necesitan crear directorios temporales
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if (files[i].isDirectory()) deleteDirectory(files[i]);
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files[i].delete(); |
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} |
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} |
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tempDirectory.delete(); |
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} catch (Exception e) { } |
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|
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} |
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/**
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* Recursive directory delete.
|
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* @param f
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*/
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private void deleteDirectory(File f) { |
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File[] files = f.listFiles(); |
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for (int i = 0; i < files.length; i++) { |
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if (files[i].isDirectory())
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deleteDirectory(files[i]); |
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files[i].delete(); |
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} |
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|
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} |
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|
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|
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/**
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* Remove an URL from the system cache. The file will remain in the file
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* system for further eventual uses.
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* @param request
|
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*/
|
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public void removeURL(URL url) { |
| 463 |
|
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URI theuri = null; |
| 465 |
|
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try {
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theuri = url.toURI(); |
| 468 |
} catch (Exception e) { |
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LOG.info("Warning: did not remove bad url: " + url, e);
|
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return;
|
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} |
| 472 |
|
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|
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if (cachedURItoFile != null && cachedURItoFile.containsKey(theuri)) |
| 475 |
cachedURItoFile.remove(theuri); |
| 476 |
} |
| 477 |
|
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/**
|
| 479 |
* Remove an URL from the system cache. The file will remain in the file
|
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* system for further eventual uses.
|
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* @param request
|
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*/
|
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public void removeURL(Object url) { |
| 484 |
if (cachedURItoFile != null && cachedURItoFile.containsKey(url)) |
| 485 |
cachedURItoFile.remove(url); |
| 486 |
} |
| 487 |
} |
| 488 |
|
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final class Monitor implements Runnable { |
| 490 |
ICancellable c; |
| 491 |
private volatile boolean finish = false; |
| 492 |
SEDownloader downloader; |
| 493 |
private static Logger LOG = LoggerFactory.getLogger(Monitor.class); |
| 494 |
|
| 495 |
public Monitor(SEDownloader downloader, ICancellable cancel) { |
| 496 |
downloader.setCanceled(cancel.getID(),false);
|
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this.c = cancel;
|
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this.downloader = downloader;
|
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} |
| 500 |
|
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public void run() { |
| 502 |
while (!c.isCanceled() && !getFinish()) {
|
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try {
|
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Thread.sleep(downloader.latency);
|
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} catch (InterruptedException e) { |
| 506 |
LOG.error("Error", e);
|
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} |
| 508 |
} |
| 509 |
|
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/* WARNING!! This works because only one download is being processed at once.
|
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* You could prefer to start several transfers simultaneously. If so, you
|
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* should consideer using a non-static variable such is Utilities.canceled to
|
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* control when and which transfer in particular has been canceled.
|
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*
|
| 515 |
* The feature of transfer several files is at the moment under study. We are
|
| 516 |
* planning to add an intelligent system that will give you a lot of services
|
| 517 |
* and ease-of-use. So, we encourage you to wait for it instead of write your
|
| 518 |
* own code.
|
| 519 |
*/
|
| 520 |
if(c.isCanceled())
|
| 521 |
downloader.setCanceled(c.getID(), true);
|
| 522 |
} |
| 523 |
|
| 524 |
public synchronized void setFinish(boolean value) { |
| 525 |
finish = value; |
| 526 |
} |
| 527 |
|
| 528 |
public synchronized boolean getFinish() { |
| 529 |
return finish;
|
| 530 |
} |
| 531 |
} |
| 532 |
|
| 533 |
final class Downloader implements Runnable { |
| 534 |
private URL url = null; |
| 535 |
private File dstFile = null; |
| 536 |
private Object groupID = null; |
| 537 |
private String data = null; |
| 538 |
private SEDownloader downloader = null; |
| 539 |
private static Logger LOG = LoggerFactory.getLogger(Downloader.class); |
| 540 |
|
| 541 |
public Downloader(SEDownloader downloader, URL url, File dstFile, Object groupID) { |
| 542 |
this.url = url;
|
| 543 |
this.dstFile = dstFile;
|
| 544 |
this.groupID = groupID;
|
| 545 |
this.downloader = downloader;
|
| 546 |
downloader.downloadException = null;
|
| 547 |
} |
| 548 |
|
| 549 |
public Downloader(SEDownloader downloader, URL url, String data, File dstFile, Object groupID) { |
| 550 |
this.url = url;
|
| 551 |
this.data = data;
|
| 552 |
this.dstFile = dstFile;
|
| 553 |
this.groupID = groupID;
|
| 554 |
this.downloader = downloader;
|
| 555 |
downloader.downloadException = null;
|
| 556 |
} |
| 557 |
|
| 558 |
public void run() { |
| 559 |
LOG.info("downloading '" + url.toString() + "' to: " + dstFile.getAbsolutePath()); |
| 560 |
if (data != null){ |
| 561 |
LOG.info("using POST, request = " + data);
|
| 562 |
} |
| 563 |
// getting timeout from preferences in milliseconds.
|
| 564 |
Preferences prefs = Preferences.userRoot().node( "gvsig.downloader" ); |
| 565 |
// by default 1 minute (60000 milliseconds.
|
| 566 |
int timeout = prefs.getInt("timeout", 60000); |
| 567 |
|
| 568 |
DataOutputStream dos;
|
| 569 |
try {
|
| 570 |
DataInputStream is;
|
| 571 |
OutputStreamWriter os = null; |
| 572 |
HttpURLConnection connection = null; |
| 573 |
//If the used protocol is HTTPS
|
| 574 |
if (url.getProtocol().equals("https")) { |
| 575 |
disableHttsValidation(); |
| 576 |
} |
| 577 |
connection = (HttpURLConnection)url.openConnection();
|
| 578 |
connection.setUseCaches(false);
|
| 579 |
connection.setConnectTimeout(timeout); |
| 580 |
//If it uses a HTTP POST
|
| 581 |
if (data != null) { |
| 582 |
connection.setRequestProperty("SOAPAction", "post"); |
| 583 |
connection.setRequestMethod("POST");
|
| 584 |
connection.setDoOutput(true);
|
| 585 |
connection.setRequestProperty("Content-Type", "text/xml; charset=UTF-8"); |
| 586 |
os = new OutputStreamWriter(connection.getOutputStream()); |
| 587 |
os.write(data); |
| 588 |
os.flush(); |
| 589 |
is = new DataInputStream(connection.getInputStream()); |
| 590 |
}else{
|
| 591 |
is = new DataInputStream(url.openStream()); |
| 592 |
} |
| 593 |
|
| 594 |
dos = new DataOutputStream( new BufferedOutputStream(new FileOutputStream(dstFile))); |
| 595 |
byte[] buffer = new byte[1024 * 4]; |
| 596 |
|
| 597 |
|
| 598 |
long readed = 0; |
| 599 |
for (int i = is.read(buffer); !downloader.getCanceled(groupID) && i>0; i = is.read(buffer)){ |
| 600 |
dos.write(buffer, 0, i);
|
| 601 |
readed += i; |
| 602 |
|
| 603 |
} |
| 604 |
if(os != null) { |
| 605 |
os.close(); |
| 606 |
} |
| 607 |
dos.close(); |
| 608 |
is.close(); |
| 609 |
is = null;
|
| 610 |
dos = null;
|
| 611 |
if (downloader.getCanceled(groupID)) {
|
| 612 |
LOG.info("[RemoteServices] '" + url + "' CANCELED."); |
| 613 |
dstFile.delete(); |
| 614 |
dstFile = null;
|
| 615 |
} else {
|
| 616 |
downloader.addDownloadedURL(url, dstFile.getAbsolutePath()); |
| 617 |
} |
| 618 |
} catch (Exception e) { |
| 619 |
LOG.info("Error downloading", e);
|
| 620 |
downloader.downloadException = e; |
| 621 |
} |
| 622 |
} |
| 623 |
|
| 624 |
/**
|
| 625 |
* This method disables the Https certificate validation.
|
| 626 |
* @throws KeyManagementException
|
| 627 |
* @throws NoSuchAlgorithmException
|
| 628 |
*/
|
| 629 |
private void disableHttsValidation() throws KeyManagementException, NoSuchAlgorithmException{ |
| 630 |
// Create a trust manager that does not validate certificate chains
|
| 631 |
TrustManager[] trustAllCerts = new TrustManager[] { |
| 632 |
new X509TrustManager() { |
| 633 |
public java.security.cert.X509Certificate[] getAcceptedIssuers() { |
| 634 |
return null; |
| 635 |
} |
| 636 |
public void checkClientTrusted( |
| 637 |
java.security.cert.X509Certificate[] certs, String authType) { |
| 638 |
} |
| 639 |
public void checkServerTrusted( |
| 640 |
java.security.cert.X509Certificate[] certs, String authType) { |
| 641 |
} |
| 642 |
} |
| 643 |
}; |
| 644 |
|
| 645 |
// Install the all-trusting trust manager
|
| 646 |
SSLContext sc = SSLContext.getInstance("SSL"); |
| 647 |
sc.init(null, trustAllCerts, new java.security.SecureRandom()); |
| 648 |
HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
|
| 649 |
} |
| 650 |
} |