зеркало из https://github.com/mozilla/gecko-dev.git
96 строки
3.0 KiB
C++
96 строки
3.0 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* vim: sw=4 ts=4 et :
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GMP_LOADER_H__
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#define GMP_LOADER_H__
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#include <stdint.h>
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#include "prlink.h"
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#include "gmp-entrypoints.h"
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#include "mozilla/UniquePtr.h"
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#if defined(XP_MACOSX) && defined(MOZ_GMP_SANDBOX)
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#include "mozilla/Sandbox.h"
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#endif
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namespace mozilla {
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namespace gmp {
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class SandboxStarter {
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public:
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virtual ~SandboxStarter() {}
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virtual bool Start(const char* aLibPath) = 0;
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#if defined(XP_MACOSX) && defined(MOZ_GMP_SANDBOX)
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// On OS X we need to set Mac-specific sandbox info just before we start the
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// sandbox, which we don't yet know when the GMPLoader and SandboxStarter
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// objects are created.
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virtual void SetSandboxInfo(MacSandboxInfo* aSandboxInfo) = 0;
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#endif
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};
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// Interface that adapts a plugin to the GMP API.
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class GMPAdapter {
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public:
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virtual ~GMPAdapter() {}
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// Sets the adapted to plugin library module.
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// Note: the GMPAdapter is responsible for calling PR_UnloadLibrary on aLib
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// when it's finished with it.
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virtual void SetAdaptee(PRLibrary* aLib) = 0;
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// These are called in place of the corresponding GMP API functions.
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virtual GMPErr GMPInit(const GMPPlatformAPI* aPlatformAPI) = 0;
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virtual GMPErr GMPGetAPI(const char* aAPIName,
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void* aHostAPI,
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void** aPluginAPI,
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uint32_t aDecryptorId) = 0;
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virtual void GMPShutdown() = 0;
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};
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// Encapsulates activating the sandbox, and loading the GMP.
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// Load() takes an optional GMPAdapter which can be used to adapt non-GMPs
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// to adhere to the GMP API.
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class GMPLoader {
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public:
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GMPLoader();
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// Activates the sandbox, then loads the GMP library. If aAdapter is
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// non-null, the lib path is assumed to be a non-GMP, and the adapter
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// is initialized with the lib and the adapter is used to interact with
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// the plugin.
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bool Load(const char* aUTF8LibPath,
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uint32_t aLibPathLen,
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const GMPPlatformAPI* aPlatformAPI,
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GMPAdapter* aAdapter = nullptr);
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// Retrieves an interface pointer from the GMP.
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GMPErr GetAPI(const char* aAPIName,
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void* aHostAPI,
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void** aPluginAPI,
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uint32_t aDecryptorId);
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// Calls the GMPShutdown function exported by the GMP lib, and unloads the
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// plugin library.
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void Shutdown();
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#if defined(XP_MACOSX) && defined(MOZ_GMP_SANDBOX)
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// On OS X we need to set Mac-specific sandbox info just before we start the
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// sandbox, which we don't yet know when the GMPLoader and SandboxStarter
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// objects are created.
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void SetSandboxInfo(MacSandboxInfo* aSandboxInfo);
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#endif
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bool CanSandbox() const;
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private:
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UniquePtr<SandboxStarter> mSandboxStarter;
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UniquePtr<GMPAdapter> mAdapter;
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};
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} // namespace gmp
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} // namespace mozilla
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#endif // GMP_LOADER_H__
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