Line data    Source code

       1             : // Copyright (C) 2010 The Android Open Source Project
       2             : //
       3             : // Licensed under the Apache License, Version 2.0 (the "License");
       4             : // you may not use this file except in compliance with the License.
       5             : // You may obtain a copy of the License at
       6             : //
       7             : // http://www.apache.org/licenses/LICENSE-2.0
       8             : //
       9             : // Unless required by applicable law or agreed to in writing, software
      10             : // distributed under the License is distributed on an "AS IS" BASIS,
      11             : // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      12             : // See the License for the specific language governing permissions and
      13             : // limitations under the License.
      14             : 
      15             : package com.google.gerrit.httpd.gitweb;
      16             : 
      17             : import static com.google.gerrit.common.FileUtil.lastModified;
      18             : 
      19             : import com.google.common.io.ByteStreams;
      20             : import com.google.gerrit.server.config.GitwebCgiConfig;
      21             : import com.google.gerrit.util.http.CacheHeaders;
      22             : import com.google.inject.Inject;
      23             : import com.google.inject.Singleton;
      24             : import java.io.IOException;
      25             : import java.io.InputStream;
      26             : import java.nio.file.Files;
      27             : import java.nio.file.NoSuchFileException;
      28             : import java.nio.file.Path;
      29             : import java.util.concurrent.TimeUnit;
      30             : import javax.servlet.ServletOutputStream;
      31             : import javax.servlet.http.HttpServlet;
      32             : import javax.servlet.http.HttpServletRequest;
      33             : import javax.servlet.http.HttpServletResponse;
      34             : 
      35             : @Singleton
      36             : class GitwebJavaScriptServlet extends HttpServlet {
      37             :   private static final long serialVersionUID = 1L;
      38             : 
      39             :   private final long modified;
      40             :   private final byte[] raw;
      41             : 
      42             :   @Inject
      43           0 :   GitwebJavaScriptServlet(GitwebCgiConfig gitwebCgiConfig) throws IOException {
      44             :     byte[] png;
      45           0 :     Path src = gitwebCgiConfig.getGitwebJs();
      46           0 :     if (src != null) {
      47           0 :       try (InputStream in = Files.newInputStream(src)) {
      48           0 :         png = ByteStreams.toByteArray(in);
      49           0 :       } catch (NoSuchFileException e) {
      50           0 :         png = null;
      51           0 :       }
      52           0 :       modified = lastModified(src);
      53             :     } else {
      54           0 :       modified = -1;
      55           0 :       png = null;
      56             :     }
      57           0 :     raw = png;
      58           0 :   }
      59             : 
      60             :   @Override
      61             :   protected long getLastModified(HttpServletRequest req) {
      62           0 :     return modified;
      63             :   }
      64             : 
      65             :   @Override
      66             :   protected void doGet(HttpServletRequest req, HttpServletResponse rsp) throws IOException {
      67           0 :     if (raw != null) {
      68           0 :       rsp.setContentType("text/javascript");
      69           0 :       rsp.setContentLength(raw.length);
      70           0 :       rsp.setDateHeader("Last-Modified", modified);
      71           0 :       CacheHeaders.setCacheable(req, rsp, 5, TimeUnit.MINUTES);
      72             : 
      73           0 :       try (ServletOutputStream os = rsp.getOutputStream()) {
      74           0 :         os.write(raw);
      75             :       }
      76             :     } else {
      77           0 :       CacheHeaders.setNotCacheable(rsp);
      78           0 :       rsp.sendError(HttpServletResponse.SC_NOT_FOUND);
      79             :     }
      80           0 :   }
      81             : }