Initialize the bootstrap sandbox in the browser process.

content/browser/bootstrap_sandbox_mac.cc

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "content/browser/bootstrap_sandbox_mac.h"
+
+#include "base/logging.h"
+#include "base/mac/mac_util.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/singleton.h"
+#include "content/common/sandbox_init_mac.h"
+#include "content/public/browser/browser_child_process_observer.h"
+#include "content/public/browser/child_process_data.h"
+#include "content/public/common/sandbox_type_mac.h"
+#include "sandbox/mac/bootstrap_sandbox.h"
+
+namespace content {
+
+namespace {
+
+// This class is responsible for creating the BootstrapSandbox global
+// singleton, as well as registering all associated policies with it.
+class BootstrapSandboxPolicy : public BrowserChildProcessObserver {
+ public:
+  static BootstrapSandboxPolicy* GetInstance();
+
+  sandbox::BootstrapSandbox* sandbox() const {
+    return sandbox_.get();
+  }
+
+  // BrowserChildProcessObserver:
+  virtual void BrowserChildProcessHostDisconnected(
+      const ChildProcessData& data) OVERRIDE;
+  virtual void BrowserChildProcessCrashed(
+      const ChildProcessData& data) OVERRIDE;
+
+ private:
+  friend struct DefaultSingletonTraits<BootstrapSandboxPolicy>;
+  BootstrapSandboxPolicy();
+  virtual ~BootstrapSandboxPolicy();
+
+  void RegisterSandboxPolicies();
+  void RegisterNPAPIPolicy();
+
+  scoped_ptr<sandbox::BootstrapSandbox> sandbox_;
+};
+
+BootstrapSandboxPolicy* BootstrapSandboxPolicy::GetInstance() {
+  return Singleton<BootstrapSandboxPolicy>::get();
+}
+
+void BootstrapSandboxPolicy::BrowserChildProcessHostDisconnected(
+      const ChildProcessData& data) {
+  sandbox()->ChildDied(data.handle);
+}
+
+void BootstrapSandboxPolicy::BrowserChildProcessCrashed(
+      const ChildProcessData& data) {
+  sandbox()->ChildDied(data.handle);
+}
+
+BootstrapSandboxPolicy::BootstrapSandboxPolicy()
+    : sandbox_(sandbox::BootstrapSandbox::Create()) {
+  CHECK(sandbox_.get());
+  BrowserChildProcessObserver::Add(this);
+  RegisterSandboxPolicies();
+}
+
+BootstrapSandboxPolicy::~BootstrapSandboxPolicy() {
+  BrowserChildProcessObserver::Remove(this);
+}
+
+void BootstrapSandboxPolicy::RegisterSandboxPolicies() {
+  RegisterNPAPIPolicy();
+}
+
+void BootstrapSandboxPolicy::RegisterNPAPIPolicy() {
+  sandbox::BootstrapSandboxPolicy policy;
+  policy.default_rule = sandbox::Rule(sandbox::POLICY_ALLOW);
+  policy.rules[kBootstrapPortNameForNPAPIPlugins] =
+      sandbox::Rule(sandbox_->real_bootstrap_port());
+  sandbox_->RegisterSandboxPolicy(SANDBOX_TYPE_NPAPI, policy);
+}
+
+}  // namespace
+
+bool ShouldEnableBootstrapSandbox() {
+  return base::mac::IsOSMountainLionOrEarlier() ||
+         base::mac::IsOSMavericks();
+}
+
+sandbox::BootstrapSandbox* GetBootstrapSandbox() {
+  return BootstrapSandboxPolicy::GetInstance()->sandbox();
+}
+
+}  // namespace content