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- /*
- * Copyright (C) 2009-2010, Google Inc.
- * and other copyright owners as documented in the project's IP log.
- *
- * This program and the accompanying materials are made available
- * under the terms of the Eclipse Distribution License v1.0 which
- * accompanies this distribution, is reproduced below, and is
- * available at http://www.eclipse.org/org/documents/edl-v10.php
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted provided that the following
- * conditions are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * - Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials provided
- * with the distribution.
- *
- * - Neither the name of the Eclipse Foundation, Inc. nor the
- * names of its contributors may be used to endorse or promote
- * products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
- package org.eclipse.jgit.http.server;
-
- import static javax.servlet.http.HttpServletResponse.SC_NOT_FOUND;
- import static javax.servlet.http.HttpServletResponse.SC_NOT_MODIFIED;
- import static org.eclipse.jgit.http.server.ServletUtils.getRepository;
- import static org.eclipse.jgit.util.HttpSupport.HDR_ETAG;
- import static org.eclipse.jgit.util.HttpSupport.HDR_IF_MODIFIED_SINCE;
- import static org.eclipse.jgit.util.HttpSupport.HDR_IF_NONE_MATCH;
- import static org.eclipse.jgit.util.HttpSupport.HDR_LAST_MODIFIED;
-
- import java.io.File;
- import java.io.FileNotFoundException;
- import java.io.IOException;
-
- import javax.servlet.ServletException;
- import javax.servlet.http.HttpServlet;
- import javax.servlet.http.HttpServletRequest;
- import javax.servlet.http.HttpServletResponse;
-
- import org.eclipse.jgit.internal.storage.file.ObjectDirectory;
- import org.eclipse.jgit.lib.Repository;
-
- /** Sends any object from {@code GIT_DIR/objects/??/0 38}, or any pack file. */
- abstract class ObjectFileServlet extends HttpServlet {
- private static final long serialVersionUID = 1L;
-
- static class Loose extends ObjectFileServlet {
- private static final long serialVersionUID = 1L;
-
- Loose() {
- super("application/x-git-loose-object");
- }
-
- @Override
- String etag(final FileSender sender) throws IOException {
- return Long.toHexString(sender.getLastModified());
- }
- }
-
- private static abstract class PackData extends ObjectFileServlet {
- private static final long serialVersionUID = 1L;
-
- PackData(String contentType) {
- super(contentType);
- }
-
- @Override
- String etag(final FileSender sender) throws IOException {
- return sender.getTailChecksum();
- }
- }
-
- static class Pack extends PackData {
- private static final long serialVersionUID = 1L;
-
- Pack() {
- super("application/x-git-packed-objects");
- }
- }
-
- static class PackIdx extends PackData {
- private static final long serialVersionUID = 1L;
-
- PackIdx() {
- super("application/x-git-packed-objects-toc");
- }
- }
-
- private final String contentType;
-
- ObjectFileServlet(final String contentType) {
- this.contentType = contentType;
- }
-
- abstract String etag(FileSender sender) throws IOException;
-
- @Override
- public void doGet(final HttpServletRequest req,
- final HttpServletResponse rsp) throws IOException {
- serve(req, rsp, true);
- }
-
- @Override
- protected void doHead(final HttpServletRequest req,
- final HttpServletResponse rsp) throws ServletException, IOException {
- serve(req, rsp, false);
- }
-
- private void serve(final HttpServletRequest req,
- final HttpServletResponse rsp, final boolean sendBody)
- throws IOException {
- final File obj = new File(objects(req), req.getPathInfo());
- final FileSender sender;
- try {
- sender = new FileSender(obj);
- } catch (FileNotFoundException e) {
- rsp.sendError(SC_NOT_FOUND);
- return;
- }
-
- try {
- final String etag = etag(sender);
- final long lastModified = (sender.getLastModified() / 1000) * 1000;
-
- String ifNoneMatch = req.getHeader(HDR_IF_NONE_MATCH);
- if (etag != null && etag.equals(ifNoneMatch)) {
- rsp.sendError(SC_NOT_MODIFIED);
- return;
- }
-
- long ifModifiedSince = req.getDateHeader(HDR_IF_MODIFIED_SINCE);
- if (0 < lastModified && lastModified < ifModifiedSince) {
- rsp.sendError(SC_NOT_MODIFIED);
- return;
- }
-
- if (etag != null)
- rsp.setHeader(HDR_ETAG, etag);
- if (0 < lastModified)
- rsp.setDateHeader(HDR_LAST_MODIFIED, lastModified);
- rsp.setContentType(contentType);
- sender.serve(req, rsp, sendBody);
- } finally {
- sender.close();
- }
- }
-
- private static File objects(final HttpServletRequest req) {
- final Repository db = getRepository(req);
- return ((ObjectDirectory) db.getObjectDatabase()).getDirectory();
- }
- }
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