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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef SANDBOX_WIN_SRC_BROKER_SERVICES_H_
#define SANDBOX_WIN_SRC_BROKER_SERVICES_H_
#include <list>
#include <map>
#include <set>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/win/scoped_handle.h"
#include "sandbox/win/src/crosscall_server.h"
#include "sandbox/win/src/job.h"
#include "sandbox/win/src/sandbox.h"
#include "sandbox/win/src/sharedmem_ipc_server.h"
#include "sandbox/win/src/win2k_threadpool.h"
#include "sandbox/win/src/win_utils.h"
namespace {
struct JobTracker;
struct PeerTracker;
} // namespace
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();
// BrokerServices interface.
virtual ResultCode Init() OVERRIDE;
virtual TargetPolicy* CreatePolicy() OVERRIDE;
virtual ResultCode SpawnTarget(const wchar_t* exe_path,
const wchar_t* command_line,
TargetPolicy* policy,
PROCESS_INFORMATION* target) OVERRIDE;
virtual ResultCode WaitForAllTargets() OVERRIDE;
virtual ResultCode AddTargetPeer(HANDLE peer_process) OVERRIDE;
virtual ResultCode InstallAppContainer(const wchar_t* sid,
const wchar_t* name) OVERRIDE;
virtual ResultCode UninstallAppContainer(const wchar_t* sid) OVERRIDE;
// Checks if the supplied process ID matches one of the broker's active
// target processes
// Returns:
// true if there is an active target process for this ID, otherwise false.
bool IsActiveTarget(DWORD process_id);
private:
// 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);
// Removes a target peer from the process list if it expires.
static VOID CALLBACK RemovePeer(PVOID parameter, BOOLEAN timeout);
// 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_;
// Maps peer process IDs to the saved handle and wait event.
// Prevents peer callbacks from accessing the broker after destruction.
typedef std::map<DWORD, PeerTracker*> PeerTrackerMap;
PeerTrackerMap peer_map_;
// Provides a fast lookup to identify sandboxed processes that belong to a
// job. Consult |jobless_process_handles_| for handles of pocess without job.
std::set<DWORD> child_process_ids_;
DISALLOW_COPY_AND_ASSIGN(BrokerServicesBase);
};
} // namespace sandbox
#endif // SANDBOX_WIN_SRC_BROKER_SERVICES_H_
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