/*
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* Copyright 2013 gitblit.com.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.gitblit;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import javax.servlet.ServletContext;
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import javax.servlet.ServletException;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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/**
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* Handles requests for logo.png
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*
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* @author James Moger
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*
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*/
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public class LogoServlet extends HttpServlet {
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private static final long serialVersionUID = 1L;
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private static final long lastModified = System.currentTimeMillis();
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public LogoServlet() {
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super();
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}
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@Override
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protected long getLastModified(HttpServletRequest req) {
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File file = GitBlit.getFileOrFolder(Keys.web.headerLogo, "${baseFolder}/logo.png");
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if (file.exists()) {
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return Math.max(lastModified, file.lastModified());
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} else {
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return lastModified;
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}
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}
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@Override
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protected void doGet(HttpServletRequest request, HttpServletResponse response)
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throws ServletException, IOException {
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InputStream is = null;
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try {
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String contentType = null;
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File file = GitBlit.getFileOrFolder(Keys.web.headerLogo, "${baseFolder}/logo.png");
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if (file.exists()) {
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// custom logo
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ServletContext context = request.getSession().getServletContext();
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contentType = context.getMimeType(file.getName());
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response.setContentLength((int) file.length());
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response.setDateHeader("Last-Modified", Math.max(lastModified, file.lastModified()));
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is = new FileInputStream(file);
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} else {
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// default logo
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response.setDateHeader("Last-Modified", lastModified);
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is = getClass().getResourceAsStream("/logo.png");
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}
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if (contentType == null) {
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contentType = "image/png";
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}
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response.setContentType(contentType);
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OutputStream os = response.getOutputStream();
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byte[] buf = new byte[4096];
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int bytesRead = is.read(buf);
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while (bytesRead != -1) {
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os.write(buf, 0, bytesRead);
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bytesRead = is.read(buf);
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}
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os.flush();
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} catch (Exception e) {
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e.printStackTrace();
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} finally {
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is.close();
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}
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}
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}
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