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/**
* Copyright (C) 2006-2017 Apache Software Foundation (https://sourceforge.net/p/webdav-servlet, https://github.com/Commonjava/webdav-handler)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.sf.webdav.methods;
import static net.sf.webdav.WebdavStatus.SC_METHOD_NOT_ALLOWED;
import static net.sf.webdav.WebdavStatus.SC_NOT_FOUND;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Locale;
import net.sf.webdav.StoredObject;
import net.sf.webdav.exceptions.WebdavException;
import net.sf.webdav.locking.ResourceLocks;
import net.sf.webdav.spi.IMimeTyper;
import net.sf.webdav.spi.ITransaction;
import net.sf.webdav.spi.IWebdavStore;
import net.sf.webdav.spi.WebdavRequest;
import net.sf.webdav.spi.WebdavResponse;
public class DoGet
extends DoHead
{
private static org.slf4j.Logger LOG = org.slf4j.LoggerFactory.getLogger( DoGet.class );
public DoGet( final IWebdavStore store, final String dftIndexFile, final String insteadOf404, final ResourceLocks resourceLocks,
final IMimeTyper mimeTyper, final boolean contentLengthHeader )
{
super( store, dftIndexFile, insteadOf404, resourceLocks, mimeTyper, contentLengthHeader );
}
@Override
protected void doBody( final ITransaction transaction, final WebdavResponse resp, final String path )
{
try
{
final StoredObject so = _store.getStoredObject( transaction, path );
if ( so.isNullResource() )
{
final String methodsAllowed = DeterminableMethod.determineMethodsAllowed( so );
resp.addHeader( "Allow", methodsAllowed );
resp.sendError( SC_METHOD_NOT_ALLOWED );
return;
}
final OutputStream out = resp.getOutputStream();
final InputStream in = _store.getResourceContent( transaction, path );
try
{
int read = -1;
final byte[] copyBuffer = new byte[BUF_SIZE];
while ( ( read = in.read( copyBuffer, 0, copyBuffer.length ) ) != -1 )
{
out.write( copyBuffer, 0, read );
}
}
finally
{
// flushing causes a IOE if a file is opened on the webserver
// client disconnected before server finished sending response
try
{
in.close();
}
catch ( final Exception e )
{
LOG.warn( "Closing InputStream causes Exception!\n" + e.toString() );
}
try
{
out.flush();
out.close();
}
catch ( final Exception e )
{
LOG.warn( "Flushing OutputStream causes Exception!\n" + e.toString() );
}
}
}
catch ( final Exception e )
{
LOG.trace( e.toString() );
}
}
@Override
protected void folderBody( final ITransaction transaction, final String path, final WebdavResponse resp, final WebdavRequest req )
throws IOException, WebdavException
{
final StoredObject so = _store.getStoredObject( transaction, path );
if ( so == null )
{
resp.sendError( SC_NOT_FOUND, req.getRequestURI() );
}
else
{
if ( so.isNullResource() )
{
final String methodsAllowed = DeterminableMethod.determineMethodsAllowed( so );
resp.addHeader( "Allow", methodsAllowed );
resp.sendError( SC_METHOD_NOT_ALLOWED );
return;
}
if ( so.isFolder() )
{
// TODO some folder response (for browsers, DAV tools
// use propfind) in html?
final DateFormat shortDF = getDateTimeFormat( req.getLocale() );
resp.setContentType( "text/html" );
resp.setCharacterEncoding( "UTF8" );
final OutputStream out = resp.getOutputStream();
String[] children = _store.getChildrenNames( transaction, path );
children = children == null ? new String[] {} : children;
// FIXME Use a content template for this!!
final StringBuilder childrenTemp = new StringBuilder();
childrenTemp.append( "Content of folder" );
childrenTemp.append( path );
childrenTemp.append( "" );
childrenTemp.append( "" );
childrenTemp.append( getHeader( transaction, path, resp, req ) );
childrenTemp.append( "
" );
childrenTemp.append( getFooter( transaction, path, resp, req ) );
childrenTemp.append( "" );
out.write( childrenTemp.toString()
.getBytes( "UTF-8" ) );
}
}
}
/**
* Return the CSS styles used to display the HTML representation
* of the webdav content.
*
* @return String returning the CSS style sheet used to display result in html format
*/
protected String getCSS()
{
// The default styles to use
String retVal =
"body {\n" + " font-family: Arial, Helvetica, sans-serif;\n" + "}\n" + "h1 {\n" + " font-size: 1.5em;\n" + "}\n" + "th {\n"
+ " background-color: #9DACBF;\n" + "}\n" + "table {\n" + " border-top-style: solid;\n" + " border-right-style: solid;\n"
+ " border-bottom-style: solid;\n" + " border-left-style: solid;\n" + "}\n" + "td {\n" + " margin: 0px;\n" + " padding-top: 2px;\n"
+ " padding-right: 5px;\n" + " padding-bottom: 2px;\n" + " padding-left: 5px;\n" + "}\n" + "tr.even {\n"
+ " background-color: #CCCCCC;\n" + "}\n" + "tr.odd {\n" + " background-color: #FFFFFF;\n" + "}\n" + "";
try
{
// Try loading one via class loader and use that one instead
final ClassLoader cl = getClass().getClassLoader();
final InputStream iStream = cl.getResourceAsStream( "webdav.css" );
if ( iStream != null )
{
// Found css via class loader, use that one
final StringBuilder out = new StringBuilder();
final byte[] b = new byte[4096];
for ( int n; ( n = iStream.read( b ) ) != -1; )
{
out.append( new String( b, 0, n ) );
}
retVal = out.toString();
}
}
catch ( final Exception ex )
{
LOG.error( "Error in reading webdav.css", ex );
}
return retVal;
}
/**
* Return this as the Date/Time format for displaying Creation + Modification dates
*
* @param browserLocale
* @return DateFormat used to display creation and modification dates
*/
protected DateFormat getDateTimeFormat( final Locale browserLocale )
{
return SimpleDateFormat.getDateTimeInstance( SimpleDateFormat.SHORT, SimpleDateFormat.MEDIUM, browserLocale );
}
/**
* Return the header to be displayed in front of the folder content
*
* @param transaction
* @param path
* @param resp
* @param req
* @return String representing the header to be display in front of the folder content
*/
protected String getHeader( final ITransaction transaction, final String path, final WebdavResponse resp, final WebdavRequest req )
{
return "
Content of folder " + path + "
";
}
/**
* Return the footer to be displayed after the folder content
*
* @param transaction
* @param path
* @param resp
* @param req
* @return String representing the footer to be displayed after the folder content
*/
protected String getFooter( final ITransaction transaction, final String path, final WebdavResponse resp, final WebdavRequest req )
{
return "";
}
}
