1 files changed, 194 insertions, 0 deletions
diff --git a/security/sandbox/common/test/SandboxTestingChild.cpp b/security/sandbox/common/test/SandboxTestingChild.cpp
new file mode 100644
index 0000000000..3a9d61556c
--- /dev/null
+++ b/security/sandbox/common/test/SandboxTestingChild.cpp
@@ -0,0 +1,194 @@
+/* -*- 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 "SandboxTestingChild.h"
+#include "SandboxTestingChildTests.h"
+#include "SandboxTestingThread.h"
+#include "mozilla/ipc/Endpoint.h"
+#include "mozilla/ipc/UtilityProcessSandboxing.h"
+#include "mozilla/ipc/UtilityProcessChild.h"
+
+#ifdef XP_LINUX
+#  include "mozilla/Sandbox.h"
+#endif
+
+#include "nsXULAppAPI.h"
+
+namespace mozilla {
+
+StaticRefPtr<SandboxTestingChild> SandboxTestingChild::sInstance;
+
+bool SandboxTestingChild::IsTestThread() { return mThread->IsOnThread(); }
+
+void SandboxTestingChild::PostToTestThread(
+    already_AddRefed<nsIRunnable>&& runnable) {
+  mThread->Dispatch(std::move(runnable));
+}
+
+/* static */
+bool SandboxTestingChild::Initialize(
+    Endpoint<PSandboxTestingChild>&& aSandboxTestingEndpoint) {
+  MOZ_ASSERT(!sInstance);
+  SandboxTestingThread* thread = SandboxTestingThread::Create();
+  if (!thread) {
+    return false;
+  }
+  sInstance =
+      new SandboxTestingChild(thread, std::move(aSandboxTestingEndpoint));
+  thread->Dispatch(NewRunnableMethod<Endpoint<PSandboxTestingChild>&&>(
+      "SandboxTestingChild::Bind", sInstance.get(), &SandboxTestingChild::Bind,
+      std::move(aSandboxTestingEndpoint)));
+  return true;
+}
+
+/* static */
+SandboxTestingChild* SandboxTestingChild::GetInstance() {
+  MOZ_ASSERT(sInstance, "Must initialize SandboxTestingChild before using it");
+  return sInstance;
+}
+
+SandboxTestingChild::SandboxTestingChild(
+    SandboxTestingThread* aThread, Endpoint<PSandboxTestingChild>&& aEndpoint)
+    : mThread(aThread) {}
+
+SandboxTestingChild::~SandboxTestingChild() = default;
+
+void SandboxTestingChild::Bind(Endpoint<PSandboxTestingChild>&& aEndpoint) {
+  MOZ_RELEASE_ASSERT(mThread->IsOnThread());
+  DebugOnly<bool> ok = aEndpoint.Bind(this);
+  MOZ_ASSERT(ok);
+
+#ifdef XP_LINUX
+  bool sandboxCrashOnError = SetSandboxCrashOnError(false);
+#endif
+
+  if (XRE_IsContentProcess()) {
+    RunTestsContent(this);
+  }
+
+  if (XRE_IsRDDProcess()) {
+    RunTestsRDD(this);
+  }
+
+  if (XRE_IsGMPluginProcess()) {
+    RunTestsGMPlugin(this);
+  }
+
+  if (XRE_IsSocketProcess()) {
+    RunTestsSocket(this);
+  }
+
+  if (XRE_IsGPUProcess()) {
+    RunTestsGPU(this);
+  }
+
+  if (XRE_IsUtilityProcess()) {
+    RefPtr<ipc::UtilityProcessChild> s = ipc::UtilityProcessChild::Get();
+    MOZ_ASSERT(s, "Unable to grab a UtilityProcessChild");
+    switch (s->mSandbox) {
+      case ipc::SandboxingKind::GENERIC_UTILITY:
+        RunTestsGenericUtility(this);
+#ifdef MOZ_APPLEMEDIA
+        [[fallthrough]];
+      case ipc::SandboxingKind::UTILITY_AUDIO_DECODING_APPLE_MEDIA:
+#endif
+#ifdef XP_WIN
+        [[fallthrough]];
+      case ipc::SandboxingKind::UTILITY_AUDIO_DECODING_WMF:
+#endif
+        RunTestsUtilityAudioDecoder(this, s->mSandbox);
+        break;
+
+      default:
+        MOZ_ASSERT(false, "Invalid SandboxingKind");
+        break;
+    }
+  }
+
+#ifdef XP_LINUX
+  SetSandboxCrashOnError(sandboxCrashOnError);
+#endif
+
+  // Tell SandboxTest that this process is done with all tests.
+  SendTestCompleted();
+}
+
+void SandboxTestingChild::ActorDestroy(ActorDestroyReason aWhy) {
+  MOZ_ASSERT(mThread->IsOnThread());
+  NS_DispatchToMainThread(NS_NewRunnableFunction(
+      "SandboxChildDestroyer", []() { SandboxTestingChild::Destroy(); }));
+}
+
+void SandboxTestingChild::Destroy() {
+  MOZ_ASSERT(NS_IsMainThread());
+  MOZ_ASSERT(sInstance);
+  sInstance = nullptr;
+}
+
+ipc::IPCResult SandboxTestingChild::RecvShutDown() {
+  Close();
+  return IPC_OK();
+}
+
+void SandboxTestingChild::ReportNoTests() {
+  SendReportTestResults("dummy_test"_ns, /* passed */ true,
+                        "The test framework fails if there are no cases."_ns);
+}
+
+template <typename F>
+void SandboxTestingChild::ErrnoTest(const nsCString& aName, bool aExpectSuccess,
+                                    F&& aFunction) {
+  int status = aFunction() >= 0 ? 0 : errno;
+  PosixTest(aName, aExpectSuccess, status);
+}
+
+template <typename F>
+void SandboxTestingChild::ErrnoValueTest(const nsCString& aName,
+                                         int aExpectedErrno, F&& aFunction) {
+  int status = aFunction() >= 0 ? 0 : errno;
+  PosixTest(aName, aExpectedErrno == 0, status, Some(aExpectedErrno));
+}
+
+void SandboxTestingChild::PosixTest(const nsCString& aName, bool aExpectSuccess,
+                                    int aStatus, Maybe<int> aExpectedError) {
+  nsAutoCString message;
+  bool passed;
+
+  // The "expected" arguments are a little redundant.
+  MOZ_ASSERT(!aExpectedError || aExpectSuccess == (*aExpectedError == 0));
+
+  // Decide whether the test passed, and stringify the actual result.
+  if (aStatus == 0) {
+    message = "Succeeded"_ns;
+    passed = aExpectSuccess;
+  } else {
+    message = "Error: "_ns;
+    message += strerror(aStatus);
+    if (aExpectedError) {
+      passed = aStatus == *aExpectedError;
+    } else {
+      passed = !aExpectSuccess;
+    }
+  }
+
+  // If something unexpected happened, mention the expected result.
+  if (!passed) {
+    message += "; expected ";
+    if (aExpectSuccess) {
+      message += "success";
+    } else {
+      message += "error";
+      if (aExpectedError) {
+        message += ": ";
+        message += strerror(*aExpectedError);
+      }
+    }
+  }
+
+  SendReportTestResults(aName, passed, message);
+}
+
+}  // namespace mozilla