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// Copyright 2008, Google Inc.
// 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 Google 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.
#ifndef SANDBOX_SRC_BROKER_SERVICES_H__
#define SANDBOX_SRC_BROKER_SERVICES_H__
#include <list>
#include "base/basictypes.h"
#include "sandbox/src/crosscall_server.h"
#include "sandbox/src/job.h"
#include "sandbox/src/sandbox.h"
#include "sandbox/src/sharedmem_ipc_server.h"
#include "sandbox/src/win2k_threadpool.h"
#include "sandbox/src/win_utils.h"
namespace sandbox {
class PolicyBase;
// BrokerServicesBase ---------------------------------------------------------
// Broker implementation version 0
//
// This is an implementation of the interface BrokerServices and
// of the associated TargetProcess interface. In this implementation
// TargetProcess is a friend of BrokerServices where the later manages a
// collection of the former.
class BrokerServicesBase : public BrokerServices,
public SingletonBase<BrokerServicesBase> {
public:
BrokerServicesBase();
~BrokerServicesBase();
// The next four methods are the BrokerServices interface
virtual ResultCode Init();
virtual TargetPolicy* CreatePolicy();
virtual ResultCode SpawnTarget(const wchar_t* exe_path,
const wchar_t* command_line,
TargetPolicy* policy,
PROCESS_INFORMATION* target);
virtual ResultCode WaitForAllTargets();
private:
// Helper structure that allows the Broker to associate a job notification
// with a job object and with a policy.
struct JobTracker {
HANDLE job;
PolicyBase* policy;
JobTracker(HANDLE cjob, PolicyBase* cpolicy)
: job(cjob), policy(cpolicy) {
}
};
// Releases the Job and notifies the associated Policy object to its
// resources as well.
static void FreeResources(JobTracker* tracker);
// The routine that the worker thread executes. It is in charge of
// notifications and cleanup-related tasks.
static DWORD WINAPI TargetEventsThread(PVOID param);
// The completion port used by the job objects to communicate events to
// the worker thread.
HANDLE job_port_;
// Handle to a manual-reset event that is signaled when the total target
// process count reaches zero.
HANDLE no_targets_;
// Handle to the worker thread that reacts to job notifications.
HANDLE job_thread_;
// Lock used to protect the list of targets from being modified by 2
// threads at the same time.
CRITICAL_SECTION lock_;
// provides a pool of threads that are used to wait on the IPC calls.
ThreadProvider* thread_pool_;
// List of the trackers for closing and cleanup purposes.
typedef std::list<JobTracker*> JobTrackerList;
JobTrackerList tracker_list_;
DISALLOW_EVIL_CONSTRUCTORS(BrokerServicesBase);
};
} // namespace sandbox
#endif // SANDBOX_SRC_BROKER_SERVICES_H__
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