| /* |
| * 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.lib.Repository; |
| import org.eclipse.jgit.storage.file.ObjectDirectory; |
| |
| /** 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(); |
| } |
| } |