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/*
* Copyright (C) 2009-2010, Google Inc. and others
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0 which is available at
* https://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package org.eclipse.jgit.http.server;
import static javax.servlet.http.HttpServletResponse.SC_FORBIDDEN;
import static javax.servlet.http.HttpServletResponse.SC_INTERNAL_SERVER_ERROR;
import static javax.servlet.http.HttpServletResponse.SC_NOT_FOUND;
import static javax.servlet.http.HttpServletResponse.SC_UNAUTHORIZED;
import static org.eclipse.jgit.http.server.GitSmartHttpTools.sendError;
import static org.eclipse.jgit.http.server.ServletUtils.ATTRIBUTE_REPOSITORY;
import java.io.IOException;
import java.text.MessageFormat;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.eclipse.jgit.errors.RepositoryNotFoundException;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.transport.ServiceMayNotContinueException;
import org.eclipse.jgit.transport.resolver.RepositoryResolver;
import org.eclipse.jgit.transport.resolver.ServiceNotAuthorizedException;
import org.eclipse.jgit.transport.resolver.ServiceNotEnabledException;
/**
* Open a repository named by the path info through
* {@link org.eclipse.jgit.transport.resolver.RepositoryResolver}.
* <p>
* This filter assumes it is invoked by
* {@link org.eclipse.jgit.http.server.GitServlet} and is likely to not work as
* expected if called from any other class. This filter assumes the path info of
* the current request is a repository name which can be used by the configured
* {@link org.eclipse.jgit.transport.resolver.RepositoryResolver} to open a
* {@link org.eclipse.jgit.lib.Repository} and attach it to the current request.
* <p>
* This filter sets request attribute
* {@link org.eclipse.jgit.http.server.ServletUtils#ATTRIBUTE_REPOSITORY} when
* it discovers the repository, and automatically closes and removes the
* attribute when the request is complete.
*/
public class RepositoryFilter implements Filter {
private final RepositoryResolver<HttpServletRequest> resolver;
private ServletContext context;
/**
* Create a new filter.
*
* @param resolver
* the resolver which will be used to translate the URL name
* component to the actual
* {@link org.eclipse.jgit.lib.Repository} instance for the
* current web request.
*/
public RepositoryFilter(RepositoryResolver<HttpServletRequest> resolver) {
this.resolver = resolver;
}
/** {@inheritDoc} */
@Override
public void init(FilterConfig config) throws ServletException {
context = config.getServletContext();
}
/** {@inheritDoc} */
@Override
public void destroy() {
context = null;
}
/** {@inheritDoc} */
@Override
public void doFilter(final ServletRequest request,
final ServletResponse response, final FilterChain chain)
throws IOException, ServletException {
HttpServletRequest req = (HttpServletRequest) request;
HttpServletResponse res = (HttpServletResponse) response;
if (request.getAttribute(ATTRIBUTE_REPOSITORY) != null) {
context.log(MessageFormat.format(HttpServerText.get().internalServerErrorRequestAttributeWasAlreadySet
, ATTRIBUTE_REPOSITORY
, getClass().getName()));
sendError(req, res, SC_INTERNAL_SERVER_ERROR);
return;
}
String name = req.getPathInfo();
while (name != null && 0 < name.length() && name.charAt(0) == '/')
name = name.substring(1);
if (name == null || name.length() == 0) {
sendError(req, res, SC_NOT_FOUND);
return;
}
try (Repository db = resolver.open(req, name)) {
request.setAttribute(ATTRIBUTE_REPOSITORY, db);
chain.doFilter(request, response);
} catch (RepositoryNotFoundException e) {
sendError(req, res, SC_NOT_FOUND);
return;
} catch (ServiceNotEnabledException e) {
sendError(req, res, SC_FORBIDDEN, e.getMessage());
return;
} catch (ServiceNotAuthorizedException e) {
res.sendError(SC_UNAUTHORIZED, e.getMessage());
return;
} catch (ServiceMayNotContinueException e) {
sendError(req, res, e.getStatusCode(), e.getMessage());
return;
} finally {
request.removeAttribute(ATTRIBUTE_REPOSITORY);
}
}
}
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