Adding upstream version 110.0.1.upstream/110.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 299 insertions, 0 deletions

diff --git a/ipc/glue/UtilityProcessChild.cpp b/ipc/glue/UtilityProcessChild.cpp
new file mode 100644
index 0000000000..93dacfa28e
--- /dev/null
+++ b/ipc/glue/UtilityProcessChild.cpp
@@ -0,0 +1,299 @@
+/* -*- 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 "UtilityProcessChild.h"
+
+#include "mozilla/ipc/UtilityProcessManager.h"
+#include "mozilla/ipc/UtilityProcessSandboxing.h"
+#include "mozilla/dom/ContentParent.h"
+#include "mozilla/dom/JSOracleChild.h"
+#include "mozilla/dom/MemoryReportRequest.h"
+#include "mozilla/ipc/CrashReporterClient.h"
+#include "mozilla/ipc/Endpoint.h"
+#include "mozilla/AppShutdown.h"
+#include "mozilla/Preferences.h"
+#include "mozilla/RemoteDecoderManagerParent.h"
+
+#if defined(XP_LINUX) && defined(MOZ_SANDBOX)
+#  include "mozilla/Sandbox.h"
+#endif
+
+#if defined(MOZ_SANDBOX) && defined(MOZ_DEBUG) && defined(ENABLE_TESTS)
+#  include "mozilla/SandboxTestingChild.h"
+#endif
+
+#include "mozilla/Telemetry.h"
+
+#if defined(XP_WIN)
+#  include "mozilla/WinDllServices.h"
+#endif
+
+#include "nsDebugImpl.h"
+#include "nsIXULRuntime.h"
+#include "nsThreadManager.h"
+#include "GeckoProfiler.h"
+
+#include "mozilla/ipc/ProcessChild.h"
+#include "mozilla/FOGIPC.h"
+#include "mozilla/glean/GleanMetrics.h"
+
+#include "mozilla/Services.h"
+
+namespace mozilla::ipc {
+
+using namespace layers;
+
+static StaticMutex sUtilityProcessChildMutex;
+static StaticRefPtr<UtilityProcessChild> sUtilityProcessChild
+    MOZ_GUARDED_BY(sUtilityProcessChildMutex);
+
+UtilityProcessChild::UtilityProcessChild() {
+  nsDebugImpl::SetMultiprocessMode("Utility");
+}
+
+UtilityProcessChild::~UtilityProcessChild() = default;
+
+/* static */
+RefPtr<UtilityProcessChild> UtilityProcessChild::GetSingleton() {
+  MOZ_ASSERT(XRE_IsUtilityProcess());
+  if (AppShutdown::IsInOrBeyond(ShutdownPhase::XPCOMShutdownFinal)) {
+    return nullptr;
+  }
+  StaticMutexAutoLock lock(sUtilityProcessChildMutex);
+  if (!sUtilityProcessChild) {
+    sUtilityProcessChild = new UtilityProcessChild();
+  }
+  return sUtilityProcessChild;
+}
+
+/* static */
+RefPtr<UtilityProcessChild> UtilityProcessChild::Get() {
+  StaticMutexAutoLock lock(sUtilityProcessChildMutex);
+  return sUtilityProcessChild;
+}
+
+bool UtilityProcessChild::Init(mozilla::ipc::UntypedEndpoint&& aEndpoint,
+                               const nsCString& aParentBuildID,
+                               uint64_t aSandboxingKind) {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  // Initialize the thread manager before starting IPC. Otherwise, messages
+  // may be posted to the main thread and we won't be able to process them.
+  if (NS_WARN_IF(NS_FAILED(nsThreadManager::get().Init()))) {
+    return false;
+  }
+
+  // Now it's safe to start IPC.
+  if (NS_WARN_IF(!aEndpoint.Bind(this))) {
+    return false;
+  }
+
+  // This must be checked before any IPDL message, which may hit sentinel
+  // errors due to parent and content processes having different
+  // versions.
+  MessageChannel* channel = GetIPCChannel();
+  if (channel && !channel->SendBuildIDsMatchMessage(aParentBuildID.get())) {
+    // We need to quit this process if the buildID doesn't match the parent's.
+    // This can occur when an update occurred in the background.
+    ipc::ProcessChild::QuickExit();
+  }
+
+  // Init crash reporter support.
+  ipc::CrashReporterClient::InitSingleton(this);
+
+  if (NS_FAILED(NS_InitMinimalXPCOM())) {
+    return false;
+  }
+
+  mSandbox = (SandboxingKind)aSandboxingKind;
+
+  profiler_set_process_name(nsCString("Utility Process"));
+
+  // Notify the parent process that we have finished our init and that it can
+  // now resolve the pending promise of process startup
+  SendInitCompleted();
+
+  RunOnShutdown(
+      [] {
+        StaticMutexAutoLock lock(sUtilityProcessChildMutex);
+        sUtilityProcessChild = nullptr;
+      },
+      ShutdownPhase::XPCOMShutdownFinal);
+
+  return true;
+}
+
+#if defined(XP_MACOSX) && defined(MOZ_SANDBOX)
+extern "C" {
+void CGSShutdownServerConnections();
+};
+#endif
+
+mozilla::ipc::IPCResult UtilityProcessChild::RecvInit(
+    const Maybe<FileDescriptor>& aBrokerFd,
+    const bool& aCanRecordReleaseTelemetry) {
+  // Do this now (before closing WindowServer on macOS) to avoid risking
+  // blocking in GetCurrentProcess() called on that platform
+  mozilla::ipc::SetThisProcessName("Utility Process");
+
+#if defined(MOZ_SANDBOX)
+#  if defined(XP_MACOSX)
+  // Close all current connections to the WindowServer. This ensures that the
+  // Activity Monitor will not label the content process as "Not responding"
+  // because it's not running a native event loop. See bug 1384336.
+  CGSShutdownServerConnections();
+
+#  elif defined(XP_LINUX)
+  int fd = -1;
+  if (aBrokerFd.isSome()) {
+    fd = aBrokerFd.value().ClonePlatformHandle().release();
+  }
+
+  SetUtilitySandbox(fd, mSandbox);
+
+#  endif  // XP_MACOSX/XP_LINUX
+#endif    // MOZ_SANDBOX
+
+#if defined(XP_WIN)
+  if (aCanRecordReleaseTelemetry) {
+    RefPtr<DllServices> dllSvc(DllServices::Get());
+    dllSvc->StartUntrustedModulesProcessor(false);
+  }
+#endif  // defined(XP_WIN)
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult UtilityProcessChild::RecvPreferenceUpdate(
+    const Pref& aPref) {
+  Preferences::SetPreference(aPref);
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult UtilityProcessChild::RecvInitProfiler(
+    Endpoint<PProfilerChild>&& aEndpoint) {
+  mProfilerController = ChildProfilerController::Create(std::move(aEndpoint));
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult UtilityProcessChild::RecvRequestMemoryReport(
+    const uint32_t& aGeneration, const bool& aAnonymize,
+    const bool& aMinimizeMemoryUsage, const Maybe<FileDescriptor>& aDMDFile,
+    const RequestMemoryReportResolver& aResolver) {
+  nsPrintfCString processName("Utility (pid: %" PRIPID
+                              ", sandboxingKind: %" PRIu64 ")",
+                              base::GetCurrentProcId(), mSandbox);
+
+  mozilla::dom::MemoryReportRequestClient::Start(
+      aGeneration, aAnonymize, aMinimizeMemoryUsage, aDMDFile, processName,
+      [&](const MemoryReport& aReport) {
+        Unused << GetSingleton()->SendAddMemoryReport(aReport);
+      },
+      aResolver);
+  return IPC_OK();
+}
+
+#if defined(MOZ_SANDBOX) && defined(MOZ_DEBUG) && defined(ENABLE_TESTS)
+mozilla::ipc::IPCResult UtilityProcessChild::RecvInitSandboxTesting(
+    Endpoint<PSandboxTestingChild>&& aEndpoint) {
+  if (!SandboxTestingChild::Initialize(std::move(aEndpoint))) {
+    return IPC_FAIL(
+        this, "InitSandboxTesting failed to initialise the child process.");
+  }
+  return IPC_OK();
+}
+#endif
+
+mozilla::ipc::IPCResult UtilityProcessChild::RecvFlushFOGData(
+    FlushFOGDataResolver&& aResolver) {
+  glean::FlushFOGData(std::move(aResolver));
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult UtilityProcessChild::RecvTestTriggerMetrics(
+    TestTriggerMetricsResolver&& aResolve) {
+  mozilla::glean::test_only_ipc::a_counter.Add(
+      nsIXULRuntime::PROCESS_TYPE_UTILITY);
+  aResolve(true);
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult UtilityProcessChild::RecvTestTelemetryProbes() {
+  const uint32_t kExpectedUintValue = 42;
+  Telemetry::ScalarSet(Telemetry::ScalarID::TELEMETRY_TEST_UTILITY_ONLY_UINT,
+                       kExpectedUintValue);
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult
+UtilityProcessChild::RecvStartUtilityAudioDecoderService(
+    Endpoint<PUtilityAudioDecoderParent>&& aEndpoint) {
+  mUtilityAudioDecoderInstance = new UtilityAudioDecoderParent();
+  if (!mUtilityAudioDecoderInstance) {
+    return IPC_FAIL(this, "Failing to create UtilityAudioDecoderParent");
+  }
+
+  mUtilityAudioDecoderInstance->Start(std::move(aEndpoint));
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult UtilityProcessChild::RecvStartJSOracleService(
+    Endpoint<PJSOracleChild>&& aEndpoint) {
+  mJSOracleInstance = new mozilla::dom::JSOracleChild();
+  if (!mJSOracleInstance) {
+    return IPC_FAIL(this, "Failing to create JSOracleParent");
+  }
+
+  mJSOracleInstance->Start(std::move(aEndpoint));
+  return IPC_OK();
+}
+
+void UtilityProcessChild::ActorDestroy(ActorDestroyReason aWhy) {
+  if (AbnormalShutdown == aWhy) {
+    NS_WARNING("Shutting down Utility process early due to a crash!");
+    ipc::ProcessChild::QuickExit();
+  }
+
+  // Send the last bits of Glean data over to the main process.
+  glean::FlushFOGData(
+      [](ByteBuf&& aBuf) { glean::SendFOGData(std::move(aBuf)); });
+
+#ifndef NS_FREE_PERMANENT_DATA
+  ProcessChild::QuickExit();
+#else
+
+  if (mProfilerController) {
+    mProfilerController->Shutdown();
+    mProfilerController = nullptr;
+  }
+
+  uint32_t timeout = 0;
+  if (mUtilityAudioDecoderInstance) {
+    mUtilityAudioDecoderInstance = nullptr;
+    timeout = 10 * 1000;
+  }
+
+  // Wait until all RemoteDecoderManagerParent have closed.
+  // It is still possible some may not have clean up yet, and we might hit
+  // timeout. Our xpcom-shutdown listener should take care of cleaning the
+  // reference of our singleton.
+  //
+  // FIXME: Should move from using AsyncBlockers to proper
+  // nsIAsyncShutdownService once it is not JS, see bug 1760855
+  mShutdownBlockers.WaitUntilClear(timeout)->Then(
+      GetCurrentSerialEventTarget(), __func__, [&]() {
+#  ifdef XP_WIN
+        {
+          RefPtr<DllServices> dllSvc(DllServices::Get());
+          dllSvc->DisableFull();
+        }
+#  endif  // defined(XP_WIN)
+
+        ipc::CrashReporterClient::DestroySingleton();
+        XRE_ShutdownChildProcess();
+      });
+#endif    // NS_FREE_PERMANENT_DATA
+}
+
+}  // namespace mozilla::ipc