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package org.openslx.taskmanager.tasks;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.URL;
import java.net.URLConnection;
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.FilenameUtils;
import org.openslx.satserver.util.Util;
import org.openslx.taskmanager.api.AbstractTask;
import com.google.gson.annotations.Expose;
public class DownloadFile extends AbstractTask
{
@Expose
private String url = null;
@Expose
private String destination = null;
private Output status = new Output();
private static final String[] ALLOWED_DIRS =
{ "/srv/openslx/www/boot/" };
@Override
protected boolean initTask()
{
this.setStatusObject( status );
if ( this.url == null ) {
status.error = "No URL given.";
return false;
}
this.destination = FilenameUtils.normalize( this.destination );
if ( this.destination == null || !Util.startsWith( this.destination, ALLOWED_DIRS ) || this.destination.endsWith( "/" ) ) {
status.error = "File not in allowed directory";
return false;
}
return true;
}
@Override
protected boolean execute()
{
URLConnection connection = null;
BufferedInputStream in = null;
FileOutputStream fout = null;
try {
File dest = new File( this.destination );
FileUtils.forceMkdir( new File( dest.getParent() ) );
FileUtils.deleteQuietly( dest );
connection = new URL( this.url ).openConnection();
in = new BufferedInputStream( connection.getInputStream() );
fout = new FileOutputStream( dest );
status.size = connection.getContentLengthLong();
final byte data[] = new byte[ 9000 ];
int count;
while ( ( count = in.read( data, 0, data.length ) ) != -1 ) {
fout.write( data, 0, count );
status.complete += count;
if ( status.size > 0 )
status.progress = (int) ( 100l * status.complete / status.size );
}
return true;
} catch ( IOException e ) {
status.error = "Download error: " + e.toString();
FileUtils.deleteQuietly( new File( this.destination ) );
return false;
} finally {
Util.multiClose( in, fout );
}
}
/**
* Output - contains additional status data of this task
*/
@SuppressWarnings( "unused" )
private static class Output
{
protected String error = null;
protected long size = -1;
protected long complete = 0;
protected int progress = 0;
}
}
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