| // Copyright (C) 2009 The Android Open Source Project |
| // |
| // 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 com.google.gerrit.httpd.gitweb; |
| |
| import static com.google.gerrit.common.FileUtil.lastModified; |
| |
| import com.google.common.io.ByteStreams; |
| import com.google.gerrit.server.config.GitwebCgiConfig; |
| import com.google.gerrit.util.http.CacheHeaders; |
| import com.google.inject.Inject; |
| import com.google.inject.Singleton; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.nio.file.Files; |
| import java.nio.file.NoSuchFileException; |
| import java.nio.file.Path; |
| import java.util.concurrent.TimeUnit; |
| import javax.servlet.ServletOutputStream; |
| import javax.servlet.http.HttpServlet; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| |
| @Singleton |
| class GitLogoServlet extends HttpServlet { |
| private static final long serialVersionUID = 1L; |
| |
| private final long modified; |
| private final byte[] raw; |
| |
| @Inject |
| GitLogoServlet(GitwebCgiConfig cfg) throws IOException { |
| byte[] png; |
| Path src = cfg.getGitLogoPng(); |
| if (src != null) { |
| try (InputStream in = Files.newInputStream(src)) { |
| png = ByteStreams.toByteArray(in); |
| } catch (NoSuchFileException e) { |
| png = null; |
| } |
| modified = lastModified(src); |
| } else { |
| modified = -1; |
| png = null; |
| } |
| raw = png; |
| } |
| |
| @Override |
| protected long getLastModified(HttpServletRequest req) { |
| return modified; |
| } |
| |
| @Override |
| protected void doGet(HttpServletRequest req, HttpServletResponse rsp) throws IOException { |
| if (raw != null) { |
| rsp.setContentType("image/png"); |
| rsp.setContentLength(raw.length); |
| rsp.setDateHeader("Last-Modified", modified); |
| CacheHeaders.setCacheable(req, rsp, 5, TimeUnit.MINUTES); |
| |
| try (ServletOutputStream os = rsp.getOutputStream()) { |
| os.write(raw); |
| } |
| } else { |
| CacheHeaders.setNotCacheable(rsp); |
| rsp.sendError(HttpServletResponse.SC_NOT_FOUND); |
| } |
| } |
| } |