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// 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 static java.nio.charset.StandardCharsets.UTF_8;
import com.google.gerrit.httpd.HtmlDomUtil;
import com.google.gerrit.server.config.GitwebCgiConfig;
import com.google.gerrit.server.config.SitePaths;
import com.google.gerrit.util.http.CacheHeaders;
import com.google.gwtjsonrpc.server.RPCServletUtils;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import java.io.IOException;
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;
abstract class GitwebCssServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
@Singleton
static class Site extends GitwebCssServlet {
private static final long serialVersionUID = 1L;
@Inject
Site(SitePaths paths) throws IOException {
super(paths.site_css);
}
}
@Singleton
static class Default extends GitwebCssServlet {
private static final long serialVersionUID = 1L;
@Inject
Default(GitwebCgiConfig gwcc) throws IOException {
super(gwcc.getGitwebCss());
}
}
private final long modified;
private final byte[] raw_css;
private final byte[] gz_css;
GitwebCssServlet(Path src) throws IOException {
if (src != null) {
final Path dir = src.getParent();
final String name = src.getFileName().toString();
final String raw = HtmlDomUtil.readFile(dir, name);
if (raw != null) {
modified = lastModified(src);
raw_css = raw.getBytes(UTF_8);
gz_css = HtmlDomUtil.compress(raw_css);
} else {
modified = -1L;
raw_css = null;
gz_css = null;
}
} else {
modified = -1;
raw_css = null;
gz_css = null;
}
}
@Override
protected long getLastModified(HttpServletRequest req) {
return modified;
}
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse rsp) throws IOException {
if (raw_css != null) {
rsp.setContentType("text/css");
rsp.setCharacterEncoding(UTF_8.name());
final byte[] toSend;
if (RPCServletUtils.acceptsGzipEncoding(req)) {
rsp.setHeader("Content-Encoding", "gzip");
toSend = gz_css;
} else {
toSend = raw_css;
}
rsp.setContentLength(toSend.length);
rsp.setDateHeader("Last-Modified", modified);
CacheHeaders.setCacheable(req, rsp, 5, TimeUnit.MINUTES);
try (ServletOutputStream os = rsp.getOutputStream()) {
os.write(toSend);
}
} else {
CacheHeaders.setNotCacheable(rsp);
rsp.sendError(HttpServletResponse.SC_NOT_FOUND);
}
}
}
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