| // Copyright (C) 2013 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.pgm.http.jetty; |
| |
| import static java.nio.charset.StandardCharsets.ISO_8859_1; |
| |
| import com.google.common.base.Strings; |
| import com.google.common.flogger.FluentLogger; |
| import com.google.gerrit.util.http.CacheHeaders; |
| import java.io.IOException; |
| import javax.servlet.ServletOutputStream; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| import org.eclipse.jetty.http.HttpHeader; |
| import org.eclipse.jetty.http.HttpStatus; |
| import org.eclipse.jetty.server.HttpConnection; |
| import org.eclipse.jetty.server.Request; |
| import org.eclipse.jetty.server.handler.ErrorHandler; |
| |
| class HiddenErrorHandler extends ErrorHandler { |
| private static final FluentLogger logger = FluentLogger.forEnclosingClass(); |
| |
| @Override |
| public void handle( |
| String target, Request baseRequest, HttpServletRequest req, HttpServletResponse res) |
| throws IOException { |
| HttpConnection conn = HttpConnection.getCurrentConnection(); |
| baseRequest.setHandled(true); |
| try { |
| log(req); |
| } finally { |
| reply(conn, res); |
| } |
| } |
| |
| private void reply(HttpConnection conn, HttpServletResponse res) throws IOException { |
| byte[] msg = message(conn); |
| res.setHeader(HttpHeader.CONTENT_TYPE.asString(), "text/plain; charset=ISO-8859-1"); |
| res.setContentLength(msg.length); |
| try { |
| CacheHeaders.setNotCacheable(res); |
| } finally { |
| try (ServletOutputStream out = res.getOutputStream()) { |
| out.write(msg); |
| } |
| } |
| } |
| |
| private static byte[] message(HttpConnection conn) { |
| String msg; |
| if (conn == null) { |
| msg = ""; |
| } else { |
| msg = conn.getHttpChannel().getResponse().getReason(); |
| if (msg == null) { |
| msg = HttpStatus.getMessage(conn.getHttpChannel().getResponse().getStatus()); |
| } |
| } |
| return msg.getBytes(ISO_8859_1); |
| } |
| |
| private static void log(HttpServletRequest req) { |
| Throwable err = (Throwable) req.getAttribute("javax.servlet.error.exception"); |
| if (err != null) { |
| String uri = req.getRequestURI(); |
| if (!Strings.isNullOrEmpty(req.getQueryString())) { |
| uri += "?" + req.getQueryString(); |
| } |
| logger.atSevere().withCause(err).log("Error in %s %s", req.getMethod(), uri); |
| } |
| } |
| } |