| /* |
| * 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.glue; |
| |
| import static java.lang.Integer.valueOf; |
| |
| import java.io.IOException; |
| import java.text.MessageFormat; |
| |
| import javax.servlet.Filter; |
| import javax.servlet.FilterChain; |
| import javax.servlet.FilterConfig; |
| import javax.servlet.ServletException; |
| import javax.servlet.ServletRequest; |
| import javax.servlet.ServletResponse; |
| |
| import org.eclipse.jgit.http.server.HttpServerText; |
| |
| /** |
| * Switch servlet path and path info to use another regex match group. |
| * <p> |
| * This filter is meant to be installed in the middle of a pipeline created by |
| * {@link org.eclipse.jgit.http.server.glue.MetaServlet#serveRegex(String)}. The |
| * passed request's servlet path is updated to be all text up to the start of |
| * the designated capture group, and the path info is changed to the contents of |
| * the capture group. |
| */ |
| public class RegexGroupFilter implements Filter { |
| private final int groupIdx; |
| |
| /** |
| * Constructor for RegexGroupFilter |
| * |
| * @param groupIdx |
| * capture group number, 1 through the number of groups. |
| */ |
| public RegexGroupFilter(final int groupIdx) { |
| if (groupIdx < 1) |
| throw new IllegalArgumentException(MessageFormat.format( |
| HttpServerText.get().invalidIndex, valueOf(groupIdx))); |
| this.groupIdx = groupIdx - 1; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void init(FilterConfig config) throws ServletException { |
| // Do nothing. |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void destroy() { |
| // Do nothing. |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void doFilter(final ServletRequest request, |
| final ServletResponse rsp, final FilterChain chain) |
| throws IOException, ServletException { |
| final WrappedRequest[] g = groupsFor(request); |
| if (groupIdx < g.length) |
| chain.doFilter(g[groupIdx], rsp); |
| else |
| throw new ServletException(MessageFormat.format( |
| HttpServerText.get().invalidRegexGroup, |
| valueOf(groupIdx + 1))); |
| } |
| |
| private static WrappedRequest[] groupsFor(final ServletRequest r) { |
| return (WrappedRequest[]) r.getAttribute(MetaFilter.REGEX_GROUPS); |
| } |
| } |