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// Copyright 2008 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.gerrit.server;
import com.google.gerrit.client.rpc.NotSignedInException;
import com.google.gerrit.client.rpc.SignInRequired;
import com.google.gerrit.git.WorkQueue;
import com.google.gwtjsonrpc.server.JsonServlet;
import com.google.gwtjsonrpc.server.SignedToken;
import com.google.gwtjsonrpc.server.XsrfException;
import com.google.gwtorm.client.OrmException;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Base JSON servlet to ensure the current user is not forged.
*/
public abstract class GerritJsonServlet extends JsonServlet<GerritCall> {
@SuppressWarnings("unchecked")
public static final GerritCall getCurrentCall() {
return JsonServlet.<GerritCall> getCurrentCall();
}
private GerritServer server;
@Override
public void init(final ServletConfig config) throws ServletException {
super.init(config);
try {
server = GerritServer.getInstance();
} catch (OrmException e) {
throw new ServletException("Cannot configure GerritServer", e);
} catch (XsrfException e) {
throw new ServletException("Cannot configure GerritServer", e);
}
}
@Override
public void destroy() {
WorkQueue.terminate();
super.destroy();
}
@Override
protected SignedToken createXsrfSignedToken() throws XsrfException {
try {
return GerritServer.getInstance().getXsrfToken();
} catch (OrmException e) {
throw new XsrfException("Cannot configure GerritServer", e);
}
}
@Override
protected GerritCall createActiveCall(final HttpServletRequest req,
final HttpServletResponse resp) {
return new GerritCall(server, req, resp);
}
@Override
protected void preInvoke(final GerritCall call) {
super.preInvoke(call);
if (call.isComplete()) {
return;
}
if (call.getMethod().getAnnotation(SignInRequired.class) != null) {
// If SignInRequired is set on this method we must have both a
// valid XSRF token *and* have the user signed in. Doing these
// checks also validates that they agree on the user identity.
//
if (!call.requireXsrfValid()) {
return;
}
if (call.getAccountId() == null) {
call.onFailure(new NotSignedInException());
return;
}
}
}
@Override
protected abstract Object createServiceHandle() throws Exception;
}
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