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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
#ifndef mozilla_LoaderAPIInterfaces_h
#define mozilla_LoaderAPIInterfaces_h
#include "nscore.h"
#include "mozilla/glue/SharedSection.h"
#include "mozilla/ModuleLoadInfo.h"
#include "mozilla/ProcessType.h"
namespace mozilla {
namespace nt {
class NS_NO_VTABLE LoaderObserver {
public:
/**
* Notification that a DLL load has begun.
*
* @param aContext Outparam that allows this observer to store any context
* information pertaining to the current load.
* @param aRequestedDllName The DLL name requested by whatever invoked the
* loader. This name may not match the effective
* name of the DLL once the loader has completed
* its path search.
*/
virtual void OnBeginDllLoad(void** aContext,
PCUNICODE_STRING aRequestedDllName) = 0;
/**
* Query the observer to determine whether the DLL named |aLSPLeafName| needs
* to be substituted with another module, and substitute the module handle
* when necessary.
*
* @return true when substitution occurs, otherwise false
*/
virtual bool SubstituteForLSP(PCUNICODE_STRING aLSPLeafName,
PHANDLE aOutHandle) = 0;
/**
* Notification that a DLL load has ended.
*
* @param aContext The context that was set by the corresponding call to
* OnBeginDllLoad
* @param aNtStatus The NTSTATUS returned by LdrLoadDll
* @param aModuleLoadInfo Telemetry information that was gathered about the
* load.
*/
virtual void OnEndDllLoad(void* aContext, NTSTATUS aNtStatus,
ModuleLoadInfo&& aModuleLoadInfo) = 0;
/**
* Called to inform the observer that it is no longer active and, if
* necessary, call aNext->OnForward() with any accumulated telemetry
* information.
*/
virtual void Forward(LoaderObserver* aNext) = 0;
/**
* Receives a vector of module load telemetry from a previous LoaderObserver.
*/
virtual void OnForward(ModuleLoadInfoVec&& aInfo) = 0;
};
class NS_NO_VTABLE LoaderAPI {
public:
/**
* Construct a new ModuleLoadInfo structure and notify the LoaderObserver
* that a library load is beginning.
*/
virtual ModuleLoadInfo ConstructAndNotifyBeginDllLoad(
void** aContext, PCUNICODE_STRING aRequestedDllName) = 0;
/**
* Query to determine whether the DLL named |aLSPLeafName| needs to be
* substituted with another module, and substitute the module handle when
* necessary.
*
* @return true when substitution occurs, otherwise false
*/
virtual bool SubstituteForLSP(PCUNICODE_STRING aLSPLeafName,
PHANDLE aOutHandle) = 0;
/**
* Notification that a DLL load has ended.
*/
virtual void NotifyEndDllLoad(void* aContext, NTSTATUS aLoadNtStatus,
ModuleLoadInfo&& aModuleLoadInfo) = 0;
/**
* Given the address of a mapped section, obtain the name of the file that is
* backing it.
*/
virtual AllocatedUnicodeString GetSectionName(void* aSectionAddr) = 0;
using InitDllBlocklistOOPFnPtr = LauncherVoidResultWithLineInfo (*)(
const wchar_t*, HANDLE, const IMAGE_THUNK_DATA*, const GeckoProcessType);
using HandleLauncherErrorFnPtr = void (*)(const LauncherError&, const char*);
/**
* Return a pointer to winlauncher's function.
* Used by sandboxBroker::LaunchApp.
*/
virtual InitDllBlocklistOOPFnPtr GetDllBlocklistInitFn() = 0;
virtual HandleLauncherErrorFnPtr GetHandleLauncherErrorFn() = 0;
virtual SharedSection* GetSharedSection() = 0;
};
struct WinLauncherServices final {
nt::LoaderAPI::InitDllBlocklistOOPFnPtr mInitDllBlocklistOOP;
nt::LoaderAPI::HandleLauncherErrorFnPtr mHandleLauncherError;
SharedSection* mSharedSection;
WinLauncherServices()
: mInitDllBlocklistOOP(nullptr),
mHandleLauncherError(nullptr),
mSharedSection(nullptr) {}
};
} // namespace nt
} // namespace mozilla
#endif // mozilla_LoaderAPIInterfaces_h
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