/* 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 "sandboxTarget.h"

#include "mozilla/CpuInfo.h"
#include "mozilla/SandboxSettings.h"
#include "sandbox/win/src/sandbox.h"

namespace mozilla {

// We need to define this function out of line so that clang-cl doesn't inline
// it.
/* static */
SandboxTarget* SandboxTarget::Instance() {
  static SandboxTarget sb;
  return &sb;
}

void SandboxTarget::StartSandbox() {
  if (mTargetServices) {
    mTargetServices->LowerToken();
    NotifyStartObservers();
  }
}

void SandboxTarget::LowerContentSandbox() {
  if (GetEffectiveContentSandboxLevel() > 7) {
    // Libraries required by Network Security Services (NSS).
    ::LoadLibraryW(L"freebl3.dll");
    ::LoadLibraryW(L"softokn3.dll");
    // Cache value that is retrieved from a registry entry.
    (void)GetCpuFrequencyMHz();
  }

  StartSandbox();
}

void SandboxTarget::NotifyStartObservers() {
  for (auto&& obs : mStartObservers) {
    if (!obs) {
      continue;
    }

    obs();
  }

  mStartObservers.clear();
}

}  // namespace mozilla