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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 http://mozilla.org/MPL/2.0/. */
#include "mozilla/mscom/ActivationContext.h"
#include "mozilla/Assertions.h"
#include "mozilla/DebugOnly.h"
#include "mozilla/mscom/Utils.h"
namespace mozilla {
namespace mscom {
ActivationContext::ActivationContext(WORD aResourceId)
: ActivationContext(reinterpret_cast<HMODULE>(GetContainingModuleHandle()),
aResourceId) {}
ActivationContext::ActivationContext(HMODULE aLoadFromModule, WORD aResourceId)
: mActCtx(INVALID_HANDLE_VALUE) {
ACTCTX actCtx = {sizeof(actCtx)};
actCtx.dwFlags = ACTCTX_FLAG_RESOURCE_NAME_VALID | ACTCTX_FLAG_HMODULE_VALID;
actCtx.lpResourceName = MAKEINTRESOURCE(aResourceId);
actCtx.hModule = aLoadFromModule;
Init(actCtx);
}
void ActivationContext::Init(ACTCTX& aActCtx) {
MOZ_ASSERT(mActCtx == INVALID_HANDLE_VALUE);
mActCtx = ::CreateActCtx(&aActCtx);
MOZ_ASSERT(mActCtx != INVALID_HANDLE_VALUE);
}
void ActivationContext::AddRef() {
if (mActCtx == INVALID_HANDLE_VALUE) {
return;
}
::AddRefActCtx(mActCtx);
}
ActivationContext::ActivationContext(ActivationContext&& aOther)
: mActCtx(aOther.mActCtx) {
aOther.mActCtx = INVALID_HANDLE_VALUE;
}
ActivationContext& ActivationContext::operator=(ActivationContext&& aOther) {
Release();
mActCtx = aOther.mActCtx;
aOther.mActCtx = INVALID_HANDLE_VALUE;
return *this;
}
ActivationContext::ActivationContext(const ActivationContext& aOther)
: mActCtx(aOther.mActCtx) {
AddRef();
}
ActivationContext& ActivationContext::operator=(
const ActivationContext& aOther) {
Release();
mActCtx = aOther.mActCtx;
AddRef();
return *this;
}
void ActivationContext::Release() {
if (mActCtx == INVALID_HANDLE_VALUE) {
return;
}
::ReleaseActCtx(mActCtx);
mActCtx = INVALID_HANDLE_VALUE;
}
ActivationContext::~ActivationContext() { Release(); }
#if defined(MOZILLA_INTERNAL_API)
/* static */ Result<uintptr_t, HRESULT> ActivationContext::GetCurrent() {
HANDLE actCtx;
if (!::GetCurrentActCtx(&actCtx)) {
return Result<uintptr_t, HRESULT>(HRESULT_FROM_WIN32(::GetLastError()));
}
return reinterpret_cast<uintptr_t>(actCtx);
}
/* static */
HRESULT ActivationContext::GetCurrentManifestPath(nsAString& aOutManifestPath) {
aOutManifestPath.Truncate();
SIZE_T bytesNeeded;
BOOL ok = ::QueryActCtxW(QUERY_ACTCTX_FLAG_USE_ACTIVE_ACTCTX, nullptr,
nullptr, ActivationContextDetailedInformation,
nullptr, 0, &bytesNeeded);
if (!ok) {
DWORD err = ::GetLastError();
if (err != ERROR_INSUFFICIENT_BUFFER) {
return HRESULT_FROM_WIN32(err);
}
}
auto ctxBuf = MakeUnique<BYTE[]>(bytesNeeded);
ok = ::QueryActCtxW(QUERY_ACTCTX_FLAG_USE_ACTIVE_ACTCTX, nullptr, nullptr,
ActivationContextDetailedInformation, ctxBuf.get(),
bytesNeeded, nullptr);
if (!ok) {
return HRESULT_FROM_WIN32(::GetLastError());
}
auto ctxInfo =
reinterpret_cast<ACTIVATION_CONTEXT_DETAILED_INFORMATION*>(ctxBuf.get());
// assemblyIndex is 1-based, and we want the last index, so we can just copy
// ctxInfo->ulAssemblyCount directly.
DWORD assemblyIndex = ctxInfo->ulAssemblyCount;
ok = ::QueryActCtxW(
QUERY_ACTCTX_FLAG_USE_ACTIVE_ACTCTX, nullptr, &assemblyIndex,
AssemblyDetailedInformationInActivationContext, nullptr, 0, &bytesNeeded);
if (!ok) {
DWORD err = ::GetLastError();
if (err != ERROR_INSUFFICIENT_BUFFER) {
return HRESULT_FROM_WIN32(err);
}
}
auto assemblyBuf = MakeUnique<BYTE[]>(bytesNeeded);
ok = ::QueryActCtxW(QUERY_ACTCTX_FLAG_USE_ACTIVE_ACTCTX, nullptr,
&assemblyIndex,
AssemblyDetailedInformationInActivationContext,
assemblyBuf.get(), bytesNeeded, &bytesNeeded);
if (!ok) {
return HRESULT_FROM_WIN32(::GetLastError());
}
auto assemblyInfo =
reinterpret_cast<ACTIVATION_CONTEXT_ASSEMBLY_DETAILED_INFORMATION*>(
assemblyBuf.get());
aOutManifestPath = nsDependentString(
assemblyInfo->lpAssemblyManifestPath,
(assemblyInfo->ulManifestPathLength + 1) / sizeof(wchar_t));
return S_OK;
}
#endif // defined(MOZILLA_INTERNAL_API)
ActivationContextRegion::ActivationContextRegion() : mActCookie(0) {}
ActivationContextRegion::ActivationContextRegion(
const ActivationContext& aActCtx)
: mActCtx(aActCtx), mActCookie(0) {
Activate();
}
ActivationContextRegion& ActivationContextRegion::operator=(
const ActivationContext& aActCtx) {
Deactivate();
mActCtx = aActCtx;
Activate();
return *this;
}
ActivationContextRegion::ActivationContextRegion(ActivationContext&& aActCtx)
: mActCtx(std::move(aActCtx)), mActCookie(0) {
Activate();
}
ActivationContextRegion& ActivationContextRegion::operator=(
ActivationContext&& aActCtx) {
Deactivate();
mActCtx = std::move(aActCtx);
Activate();
return *this;
}
ActivationContextRegion::ActivationContextRegion(ActivationContextRegion&& aRgn)
: mActCtx(std::move(aRgn.mActCtx)), mActCookie(aRgn.mActCookie) {
aRgn.mActCookie = 0;
}
ActivationContextRegion& ActivationContextRegion::operator=(
ActivationContextRegion&& aRgn) {
Deactivate();
mActCtx = std::move(aRgn.mActCtx);
mActCookie = aRgn.mActCookie;
aRgn.mActCookie = 0;
return *this;
}
void ActivationContextRegion::Activate() {
if (mActCtx.mActCtx == INVALID_HANDLE_VALUE) {
return;
}
#ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED
BOOL activated =
#endif
::ActivateActCtx(mActCtx.mActCtx, &mActCookie);
MOZ_DIAGNOSTIC_ASSERT(activated);
}
bool ActivationContextRegion::Deactivate() {
if (!mActCookie) {
return true;
}
BOOL deactivated = ::DeactivateActCtx(0, mActCookie);
MOZ_DIAGNOSTIC_ASSERT(deactivated);
if (deactivated) {
mActCookie = 0;
}
return !!deactivated;
}
ActivationContextRegion::~ActivationContextRegion() { Deactivate(); }
} // namespace mscom
} // namespace mozilla
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