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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/. */
#include "mozilla/WinDllServices.h"
#include <windows.h>
#include <psapi.h>
#include "mozilla/ClearOnShutdown.h"
#include "mozilla/SchedulerGroup.h"
#include "mozilla/Services.h"
#include "mozilla/StaticLocalPtr.h"
#include "mozilla/UntrustedModulesProcessor.h"
#include "nsCOMPtr.h"
#include "nsIObserverService.h"
#include "nsString.h"
#include "nsXULAppAPI.h"
namespace mozilla {
const char* DllServices::kTopicDllLoadedMainThread = "dll-loaded-main-thread";
const char* DllServices::kTopicDllLoadedNonMainThread =
"dll-loaded-non-main-thread";
/* static */
DllServices* DllServices::Get() {
static StaticLocalRefPtr<DllServices> sInstance(
[]() -> already_AddRefed<DllServices> {
RefPtr<DllServices> dllSvc(new DllServices());
// Full DLL services require XPCOM, which GMP doesn't have
if (XRE_IsGMPluginProcess()) {
dllSvc->EnableBasic();
} else {
dllSvc->EnableFull();
}
auto setClearOnShutdown = [ptr = &sInstance]() -> void {
ClearOnShutdown(ptr);
};
if (NS_IsMainThread()) {
setClearOnShutdown();
return dllSvc.forget();
}
SchedulerGroup::Dispatch(
TaskCategory::Other,
NS_NewRunnableFunction("mozilla::DllServices::Get",
std::move(setClearOnShutdown)));
return dllSvc.forget();
}());
return sInstance;
}
DllServices::~DllServices() { DisableFull(); }
void DllServices::StartUntrustedModulesProcessor(bool aIsStartingUp) {
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(!mUntrustedModulesProcessor);
mUntrustedModulesProcessor = UntrustedModulesProcessor::Create(aIsStartingUp);
}
bool DllServices::IsReadyForBackgroundProcessing() const {
return mUntrustedModulesProcessor &&
mUntrustedModulesProcessor->IsReadyForBackgroundProcessing();
}
RefPtr<UntrustedModulesPromise> DllServices::GetUntrustedModulesData() {
if (!mUntrustedModulesProcessor) {
return UntrustedModulesPromise::CreateAndReject(NS_ERROR_NOT_IMPLEMENTED,
__func__);
}
return mUntrustedModulesProcessor->GetProcessedData();
}
void DllServices::DisableFull() {
if (XRE_IsGMPluginProcess()) {
return;
}
if (mUntrustedModulesProcessor) {
mUntrustedModulesProcessor->Disable();
}
glue::DllServices::DisableFull();
}
RefPtr<ModulesTrustPromise> DllServices::GetModulesTrust(
ModulePaths&& aModPaths, bool aRunAtNormalPriority) {
if (!mUntrustedModulesProcessor) {
return ModulesTrustPromise::CreateAndReject(NS_ERROR_NOT_IMPLEMENTED,
__func__);
}
return mUntrustedModulesProcessor->GetModulesTrust(std::move(aModPaths),
aRunAtNormalPriority);
}
void DllServices::NotifyDllLoad(glue::EnhancedModuleLoadInfo&& aModLoadInfo) {
MOZ_ASSERT(NS_IsMainThread());
const char* topic;
if (aModLoadInfo.mNtLoadInfo.mThreadId == ::GetCurrentThreadId()) {
topic = kTopicDllLoadedMainThread;
} else {
topic = kTopicDllLoadedNonMainThread;
}
// We save the path to a nsAutoString because once we have submitted
// aModLoadInfo for processing there is no guarantee that the original
// buffer will continue to be valid.
nsAutoString dllFilePath(aModLoadInfo.GetSectionName());
if (mUntrustedModulesProcessor) {
mUntrustedModulesProcessor->Enqueue(std::move(aModLoadInfo));
}
nsCOMPtr<nsIObserverService> obsServ(mozilla::services::GetObserverService());
if (!obsServ) {
return;
}
obsServ->NotifyObservers(nullptr, topic, dllFilePath.get());
}
void DllServices::NotifyModuleLoadBacklog(ModuleLoadInfoVec&& aEvents) {
MOZ_ASSERT(NS_IsMainThread());
if (!mUntrustedModulesProcessor) {
return;
}
mUntrustedModulesProcessor->Enqueue(std::move(aEvents));
}
} // namespace mozilla
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