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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 jakarta.servlet.http.HttpServletResponse.SC_FORBIDDEN;
import static jakarta.servlet.http.HttpServletResponse.SC_INTERNAL_SERVER_ERROR;
import static jakarta.servlet.http.HttpServletResponse.SC_UNAUTHORIZED;
import static jakarta.servlet.http.HttpServletResponse.SC_UNSUPPORTED_MEDIA_TYPE;
import static org.eclipse.jgit.http.server.GitSmartHttpTools.RECEIVE_PACK;
import static org.eclipse.jgit.http.server.GitSmartHttpTools.RECEIVE_PACK_REQUEST_TYPE;
import static org.eclipse.jgit.http.server.GitSmartHttpTools.RECEIVE_PACK_RESULT_TYPE;
import static org.eclipse.jgit.http.server.GitSmartHttpTools.sendError;
import static org.eclipse.jgit.http.server.ServletUtils.ATTRIBUTE_HANDLER;
import static org.eclipse.jgit.http.server.ServletUtils.consumeRequestBody;
import static org.eclipse.jgit.http.server.ServletUtils.getInputStream;
import static org.eclipse.jgit.http.server.ServletUtils.getRepository;
import static org.eclipse.jgit.util.HttpSupport.HDR_USER_AGENT;
import java.io.IOException;
import java.text.MessageFormat;
import java.util.List;
import jakarta.servlet.Filter;
import jakarta.servlet.FilterChain;
import jakarta.servlet.FilterConfig;
import jakarta.servlet.ServletException;
import jakarta.servlet.ServletRequest;
import jakarta.servlet.ServletResponse;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.eclipse.jgit.annotations.Nullable;
import org.eclipse.jgit.errors.CorruptObjectException;
import org.eclipse.jgit.errors.PackProtocolException;
import org.eclipse.jgit.errors.UnpackException;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.transport.InternalHttpServerGlue;
import org.eclipse.jgit.transport.ReceivePack;
import org.eclipse.jgit.transport.RefAdvertiser.PacketLineOutRefAdvertiser;
import org.eclipse.jgit.transport.resolver.ReceivePackFactory;
import org.eclipse.jgit.transport.resolver.ServiceNotAuthorizedException;
import org.eclipse.jgit.transport.resolver.ServiceNotEnabledException;
/** Server side implementation of smart push over HTTP. */
class ReceivePackServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
static class InfoRefs extends SmartServiceInfoRefs {
private final ReceivePackFactory<HttpServletRequest> receivePackFactory;
InfoRefs(ReceivePackFactory<HttpServletRequest> receivePackFactory,
List<Filter> filters) {
super(RECEIVE_PACK, filters);
this.receivePackFactory = receivePackFactory;
}
@Override
protected void begin(HttpServletRequest req, Repository db)
throws IOException, ServiceNotEnabledException,
ServiceNotAuthorizedException {
ReceivePack rp = receivePackFactory.create(req, db);
InternalHttpServerGlue.setPeerUserAgent(
rp,
req.getHeader(HDR_USER_AGENT));
req.setAttribute(ATTRIBUTE_HANDLER, rp);
}
@Override
protected void advertise(HttpServletRequest req,
PacketLineOutRefAdvertiser pck) throws IOException,
ServiceNotEnabledException, ServiceNotAuthorizedException {
ReceivePack rp = (ReceivePack) req.getAttribute(ATTRIBUTE_HANDLER);
try {
rp.sendAdvertisedRefs(pck);
} finally {
rp.getRevWalk().close();
}
}
}
static class Factory implements Filter {
private final ReceivePackFactory<HttpServletRequest> receivePackFactory;
Factory(ReceivePackFactory<HttpServletRequest> receivePackFactory) {
this.receivePackFactory = receivePackFactory;
}
@Override
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
HttpServletRequest req = (HttpServletRequest) request;
HttpServletResponse rsp = (HttpServletResponse) response;
ReceivePack rp;
try {
rp = receivePackFactory.create(req, getRepository(req));
} catch (ServiceNotAuthorizedException e) {
rsp.sendError(SC_UNAUTHORIZED, e.getMessage());
return;
} catch (ServiceNotEnabledException e) {
sendError(req, rsp, SC_FORBIDDEN, e.getMessage());
return;
}
try {
req.setAttribute(ATTRIBUTE_HANDLER, rp);
chain.doFilter(req, rsp);
} finally {
req.removeAttribute(ATTRIBUTE_HANDLER);
}
}
@Override
public void init(FilterConfig filterConfig) throws ServletException {
// Nothing.
}
@Override
public void destroy() {
// Nothing.
}
}
@Nullable
private final ReceivePackErrorHandler handler;
ReceivePackServlet(@Nullable ReceivePackErrorHandler handler) {
this.handler = handler;
}
@Override
public void doPost(final HttpServletRequest req,
final HttpServletResponse rsp) throws IOException {
if (!RECEIVE_PACK_REQUEST_TYPE.equals(req.getContentType())) {
rsp.sendError(SC_UNSUPPORTED_MEDIA_TYPE);
return;
}
SmartOutputStream out = new SmartOutputStream(req, rsp, false) {
@Override
public void flush() throws IOException {
doFlush();
}
};
ReceivePack rp = (ReceivePack) req.getAttribute(ATTRIBUTE_HANDLER);
rp.setBiDirectionalPipe(false);
rsp.setContentType(RECEIVE_PACK_RESULT_TYPE);
if (handler != null) {
handler.receive(req, rsp, () -> {
rp.receiveWithExceptionPropagation(getInputStream(req), out,
null);
out.close();
});
} else {
try {
rp.receive(getInputStream(req), out, null);
out.close();
} catch (CorruptObjectException e ) {
// This should be already reported to the client.
getServletContext().log(MessageFormat.format(
HttpServerText.get().receivedCorruptObject,
e.getMessage(),
ServletUtils.identify(rp.getRepository())));
consumeRequestBody(req);
out.close();
} catch (UnpackException | PackProtocolException e) {
// This should be already reported to the client.
log(rp.getRepository(), e.getCause());
consumeRequestBody(req);
out.close();
} catch (Throwable e) {
log(rp.getRepository(), e);
if (!rsp.isCommitted()) {
rsp.reset();
sendError(req, rsp, SC_INTERNAL_SERVER_ERROR);
}
return;
}
}
}
private void log(Repository git, Throwable e) {
getServletContext().log(MessageFormat.format(
HttpServerText.get().internalErrorDuringReceivePack,
ServletUtils.identify(git)), e);
}
}
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