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// Copyright 2014 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_SRC_PROCESS_MITIGATIONS_WIN32K_DISPATCHER_H_
#define SANDBOX_SRC_PROCESS_MITIGATIONS_WIN32K_DISPATCHER_H_
#include <map>
#include <string>
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/synchronization/lock.h"
#include "sandbox/win/src/crosscall_server.h"
#include "sandbox/win/src/ipc_tags.h"
#include "sandbox/win/src/sandbox_policy_base.h"
namespace sandbox {
// Class to maintain a reference to a OPM protected output handle.
class ProtectedVideoOutput
: public base::RefCountedThreadSafe<ProtectedVideoOutput> {
public:
ProtectedVideoOutput(HANDLE handle) : handle_(handle) {}
HANDLE handle() { return handle_; }
private:
friend class base::RefCountedThreadSafe<ProtectedVideoOutput>;
~ProtectedVideoOutput();
HANDLE handle_;
DISALLOW_COPY_AND_ASSIGN(ProtectedVideoOutput);
};
// This class sets up intercepts for the Win32K lockdown policy which is set
// on Windows 8 and beyond.
class ProcessMitigationsWin32KDispatcher : public Dispatcher {
public:
explicit ProcessMitigationsWin32KDispatcher(PolicyBase* policy_base);
~ProcessMitigationsWin32KDispatcher() override;
// Dispatcher interface.
bool SetupService(InterceptionManager* manager, IpcTag service) override;
bool EnumDisplayMonitors(IPCInfo* ipc, CountedBuffer* buffer);
bool GetMonitorInfo(IPCInfo* ipc, void* monitor, CountedBuffer* buffer);
bool GetSuggestedOPMProtectedOutputArraySize(IPCInfo* ipc,
std::wstring* device_name);
bool CreateOPMProtectedOutputs(IPCInfo* ipc,
std::wstring* device_name,
CountedBuffer* protected_outputs);
bool GetCertificateSize(IPCInfo* ipc,
std::wstring* device_name,
void* protected_output);
bool GetCertificate(IPCInfo* ipc,
std::wstring* device_name,
void* protected_output,
void* shared_buffer_handle,
uint32_t shared_buffer_size);
bool DestroyOPMProtectedOutput(IPCInfo* ipc, void* protected_output);
bool GetOPMRandomNumber(IPCInfo* ipc,
void* protected_output,
CountedBuffer* random_number);
bool SetOPMSigningKeyAndSequenceNumbers(IPCInfo* ipc,
void* protected_output,
CountedBuffer* parameters);
bool ConfigureOPMProtectedOutput(IPCInfo* ipc,
void* protected_output,
void* shared_buffer_handle);
bool GetOPMInformation(IPCInfo* ipc,
void* protected_output,
void* shared_buffer_handle);
private:
scoped_refptr<ProtectedVideoOutput> GetProtectedVideoOutput(
HANDLE handle,
bool destroy_output);
PolicyBase* policy_base_;
std::map<HANDLE, scoped_refptr<ProtectedVideoOutput>> protected_outputs_;
base::Lock protected_outputs_lock_;
DISALLOW_COPY_AND_ASSIGN(ProcessMitigationsWin32KDispatcher);
};
} // namespace sandbox
#endif // SANDBOX_SRC_PROCESS_MITIGATIONS_WIN32K_DISPATCHER_H_
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