diff options
Diffstat (limited to 'gerrit-httpd/src/main/java/com/google/gerrit/httpd/raw/LegacyGerritServlet.java')
-rw-r--r-- | gerrit-httpd/src/main/java/com/google/gerrit/httpd/raw/LegacyGerritServlet.java | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/gerrit-httpd/src/main/java/com/google/gerrit/httpd/raw/LegacyGerritServlet.java b/gerrit-httpd/src/main/java/com/google/gerrit/httpd/raw/LegacyGerritServlet.java new file mode 100644 index 0000000000..5a72230931 --- /dev/null +++ b/gerrit-httpd/src/main/java/com/google/gerrit/httpd/raw/LegacyGerritServlet.java @@ -0,0 +1,82 @@ +// 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.raw; + +import com.google.gerrit.httpd.HtmlDomUtil; +import com.google.gwt.user.server.rpc.RPCServletUtils; +import com.google.inject.Inject; +import com.google.inject.Singleton; + +import java.io.FileNotFoundException; +import java.io.IOException; +import java.io.OutputStream; + +import javax.servlet.ServletContext; +import javax.servlet.http.HttpServlet; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; + +/** + * Redirects from {@code /Gerrit#foo} to {@code /#foo} in JavaScript. + * <p> + * This redirect exists to convert the older /Gerrit URL into the more modern + * URL format which does not use a servlet name for the host page. We cannot do + * the redirect here in the server side, as it would lose any history token that + * appears in the URL. Instead we send an HTML page which instructs the browser + * to replace the URL, but preserve the history token. + */ +@SuppressWarnings("serial") +@Singleton +public class LegacyGerritServlet extends HttpServlet { + private final byte[] raw; + private final byte[] compressed; + + @Inject + LegacyGerritServlet(final ServletContext servletContext) throws IOException { + final String pageName = "LegacyGerrit.html"; + final String doc = HtmlDomUtil.readFile(getClass(), pageName); + if (doc == null) { + throw new FileNotFoundException("No " + pageName + " in webapp"); + } + + raw = doc.getBytes(HtmlDomUtil.ENC); + compressed = HtmlDomUtil.compress(raw); + } + + @Override + protected void doGet(final HttpServletRequest req, + final HttpServletResponse rsp) throws IOException { + final byte[] tosend; + if (RPCServletUtils.acceptsGzipEncoding(req)) { + rsp.setHeader("Content-Encoding", "gzip"); + tosend = compressed; + } else { + tosend = raw; + } + + rsp.setHeader("Expires", "Fri, 01 Jan 1980 00:00:00 GMT"); + rsp.setHeader("Pragma", "no-cache"); + rsp.setHeader("Cache-Control", "no-cache, must-revalidate"); + rsp.setContentType("text/html"); + rsp.setCharacterEncoding(HtmlDomUtil.ENC); + rsp.setContentLength(tosend.length); + final OutputStream out = rsp.getOutputStream(); + try { + out.write(tosend); + } finally { + out.close(); + } + } +} |