/**
* Copyright (c) 2000-present Liferay, Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 2.1 of the License, or (at your option)
* any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*/
package com.liferay.portal.kernel.portlet;
import com.liferay.portal.kernel.log.Log;
import com.liferay.portal.kernel.log.LogFactoryUtil;
import com.liferay.portal.kernel.servlet.BrowserSnifferUtil;
import com.liferay.portal.kernel.servlet.HttpHeaders;
import com.liferay.portal.kernel.util.ArrayUtil;
import com.liferay.portal.kernel.util.FileUtil;
import com.liferay.portal.kernel.util.GetterUtil;
import com.liferay.portal.kernel.util.PortalUtil;
import com.liferay.portal.kernel.util.PropsUtil;
import com.liferay.portal.kernel.util.StreamUtil;
import com.liferay.portal.kernel.util.StringBundler;
import com.liferay.portal.kernel.util.StringPool;
import com.liferay.portal.kernel.util.StringUtil;
import com.liferay.portal.kernel.util.URLCodec;
import com.liferay.portal.kernel.util.Validator;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.channels.Channels;
import java.nio.channels.FileChannel;
import javax.portlet.MimeResponse;
import javax.portlet.PortletRequest;
import javax.portlet.ResourceResponse;
import javax.servlet.http.HttpServletRequest;
/**
* @author Brian Wing Shun Chan
*/
public class PortletResponseUtil {
public static void sendFile(
PortletRequest portletRequest, MimeResponse mimeResponse,
String fileName, byte[] bytes)
throws IOException {
sendFile(portletRequest, mimeResponse, fileName, bytes, null);
}
public static void sendFile(
PortletRequest portletRequest, MimeResponse mimeResponse,
String fileName, byte[] bytes, String contentType)
throws IOException {
sendFile(
portletRequest, mimeResponse, fileName, bytes, contentType, null);
}
public static void sendFile(
PortletRequest portletRequest, MimeResponse mimeResponse,
String fileName, byte[] bytes, String contentType,
String contentDispositionType)
throws IOException {
setHeaders(
portletRequest, mimeResponse, fileName, contentType,
contentDispositionType);
write(mimeResponse, bytes);
}
public static void sendFile(
PortletRequest portletRequest, MimeResponse mimeResponse,
String fileName, InputStream inputStream)
throws IOException {
sendFile(portletRequest, mimeResponse, fileName, inputStream, null);
}
public static void sendFile(
PortletRequest portletRequest, MimeResponse mimeResponse,
String fileName, InputStream inputStream, int contentLength,
String contentType)
throws IOException {
sendFile(
portletRequest, mimeResponse, fileName, inputStream, contentLength,
contentType, null);
}
public static void sendFile(
PortletRequest portletRequest, MimeResponse mimeResponse,
String fileName, InputStream inputStream, int contentLength,
String contentType, String contentDispositionType)
throws IOException {
setHeaders(
portletRequest, mimeResponse, fileName, contentType,
contentDispositionType);
write(mimeResponse, inputStream, contentLength);
}
public static void sendFile(
PortletRequest portletRequest, MimeResponse mimeResponse,
String fileName, InputStream inputStream, String contentType)
throws IOException {
sendFile(
portletRequest, mimeResponse, fileName, inputStream, 0,
contentType);
}
public static void write(MimeResponse mimeResponse, byte[] bytes)
throws IOException {
write(mimeResponse, bytes, 0, 0);
}
public static void write(
MimeResponse mimeResponse, byte[] bytes, int offset,
int contentLength)
throws IOException {
// LEP-3122
if (!mimeResponse.isCommitted()) {
// LEP-536
if (contentLength == 0) {
contentLength = bytes.length;
}
if (mimeResponse instanceof ResourceResponse) {
ResourceResponse resourceResponse =
(ResourceResponse)mimeResponse;
resourceResponse.setContentLength(contentLength);
}
OutputStream outputStream = mimeResponse.getPortletOutputStream();
outputStream.write(bytes, offset, contentLength);
}
}
public static void write(MimeResponse mimeResponse, byte[][] bytesArray)
throws IOException {
// LEP-3122
if (mimeResponse.isCommitted()) {
return;
}
// LEP-536
long contentLength = 0;
for (byte[] bytes : bytesArray) {
contentLength += bytes.length;
}
if (mimeResponse instanceof ResourceResponse) {
ResourceResponse resourceResponse = (ResourceResponse)mimeResponse;
setContentLength(resourceResponse, contentLength);
}
OutputStream outputStream = mimeResponse.getPortletOutputStream();
for (byte[] bytes : bytesArray) {
outputStream.write(bytes);
}
}
public static void write(MimeResponse mimeResponse, File file)
throws IOException {
FileInputStream fileInputStream = new FileInputStream(file);
try (FileChannel fileChannel = fileInputStream.getChannel()) {
long contentLength = fileChannel.size();
if (mimeResponse instanceof ResourceResponse) {
ResourceResponse resourceResponse =
(ResourceResponse)mimeResponse;
setContentLength(resourceResponse, contentLength);
}
fileChannel.transferTo(
0, contentLength,
Channels.newChannel(mimeResponse.getPortletOutputStream()));
}
}
public static void write(MimeResponse mimeResponse, InputStream inputStream)
throws IOException {
write(mimeResponse, inputStream, 0);
}
public static void write(
MimeResponse mimeResponse, InputStream inputStream,
int contentLength)
throws IOException {
if (mimeResponse.isCommitted()) {
StreamUtil.cleanUp(inputStream);
return;
}
if (contentLength > 0) {
if (mimeResponse instanceof ResourceResponse) {
ResourceResponse resourceResponse =
(ResourceResponse)mimeResponse;
resourceResponse.setContentLength(contentLength);
}
}
StreamUtil.transfer(inputStream, mimeResponse.getPortletOutputStream());
}
public static void write(MimeResponse mimeResponse, String s)
throws IOException {
write(mimeResponse, s.getBytes(StringPool.UTF8));
}
protected static void setContentLength(
ResourceResponse response, long contentLength) {
response.setProperty(
HttpHeaders.CONTENT_LENGTH, String.valueOf(contentLength));
}
protected static void setHeaders(
PortletRequest portletRequest, MimeResponse mimeResponse,
String fileName, String contentType, String contentDispositionType) {
if (_log.isDebugEnabled()) {
_log.debug("Sending file of type " + contentType);
}
// LEP-2201
if (Validator.isNotNull(contentType)) {
mimeResponse.setContentType(contentType);
}
mimeResponse.setProperty(
HttpHeaders.CACHE_CONTROL, HttpHeaders.CACHE_CONTROL_PRIVATE_VALUE);
if (Validator.isNull(fileName)) {
return;
}
String contentDispositionFileName = "filename=\"" + fileName + "\"";
// If necessary for non-ASCII characters, encode based on RFC 2184.
// However, not all browsers support RFC 2184. See LEP-3127.
boolean ascii = true;
for (int i = 0; i < fileName.length(); i++) {
if (!Validator.isAscii(fileName.charAt(i))) {
ascii = false;
break;
}
}
try {
if (!ascii) {
String encodedFileName = URLCodec.encodeURL(fileName, true);
HttpServletRequest request = PortalUtil.getHttpServletRequest(
portletRequest);
if (BrowserSnifferUtil.isIe(request)) {
contentDispositionFileName =
"filename=\"" + encodedFileName + "\"";
}
else {
contentDispositionFileName =
"filename*=UTF-8''" + encodedFileName;
}
}
}
catch (Exception e) {
if (_log.isWarnEnabled()) {
_log.warn(e);
}
}
if (Validator.isNull(contentDispositionType)) {
String extension = GetterUtil.getString(
FileUtil.getExtension(fileName));
extension = StringUtil.toLowerCase(extension);
String[] mimeTypesContentDispositionInline = null;
try {
mimeTypesContentDispositionInline = PropsUtil.getArray(
"mime.types.content.disposition.inline");
}
catch (Exception e) {
mimeTypesContentDispositionInline = new String[0];
}
if (ArrayUtil.contains(
mimeTypesContentDispositionInline, extension)) {
contentDispositionType = HttpHeaders.CONTENT_DISPOSITION_INLINE;
}
else {
contentDispositionType =
HttpHeaders.CONTENT_DISPOSITION_ATTACHMENT;
}
}
StringBundler sb = new StringBundler(4);
sb.append(contentDispositionType);
sb.append(StringPool.SEMICOLON);
sb.append(StringPool.SPACE);
sb.append(contentDispositionFileName);
mimeResponse.setProperty(
HttpHeaders.CONTENT_DISPOSITION, sb.toString());
}
private static final Log _log = LogFactoryUtil.getLog(
PortletResponseUtil.class);
}