1 files changed, 82 insertions, 0 deletions
diff --git a/security/sandbox/chromium/sandbox/win/src/sync_dispatcher.cc b/security/sandbox/chromium/sandbox/win/src/sync_dispatcher.cc
new file mode 100644
index 0000000000..d728e1d831
--- /dev/null
+++ b/security/sandbox/chromium/sandbox/win/src/sync_dispatcher.cc
@@ -0,0 +1,82 @@
+// Copyright (c) 2013 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 "sandbox/win/src/sync_dispatcher.h"
+
+#include <stdint.h>
+
+#include "base/win/windows_version.h"
+#include "sandbox/win/src/crosscall_client.h"
+#include "sandbox/win/src/interception.h"
+#include "sandbox/win/src/interceptors.h"
+#include "sandbox/win/src/ipc_tags.h"
+#include "sandbox/win/src/policy_broker.h"
+#include "sandbox/win/src/policy_params.h"
+#include "sandbox/win/src/sandbox.h"
+#include "sandbox/win/src/sync_interception.h"
+#include "sandbox/win/src/sync_policy.h"
+
+namespace sandbox {
+
+SyncDispatcher::SyncDispatcher(PolicyBase* policy_base)
+    : policy_base_(policy_base) {
+  static const IPCCall create_params = {
+      {IpcTag::CREATEEVENT, {WCHAR_TYPE, UINT32_TYPE, UINT32_TYPE}},
+      reinterpret_cast<CallbackGeneric>(&SyncDispatcher::CreateEvent)};
+
+  static const IPCCall open_params = {
+      {IpcTag::OPENEVENT, {WCHAR_TYPE, UINT32_TYPE}},
+      reinterpret_cast<CallbackGeneric>(&SyncDispatcher::OpenEvent)};
+
+  ipc_calls_.push_back(create_params);
+  ipc_calls_.push_back(open_params);
+}
+
+bool SyncDispatcher::SetupService(InterceptionManager* manager,
+                                  IpcTag service) {
+  if (service == IpcTag::CREATEEVENT) {
+    return INTERCEPT_NT(manager, NtCreateEvent, CREATE_EVENT_ID, 24);
+  }
+  return (service == IpcTag::OPENEVENT) &&
+         INTERCEPT_NT(manager, NtOpenEvent, OPEN_EVENT_ID, 16);
+}
+
+bool SyncDispatcher::CreateEvent(IPCInfo* ipc,
+                                 std::wstring* name,
+                                 uint32_t event_type,
+                                 uint32_t initial_state) {
+  const wchar_t* event_name = name->c_str();
+  CountedParameterSet<NameBased> params;
+  params[NameBased::NAME] = ParamPickerMake(event_name);
+
+  EvalResult result =
+      policy_base_->EvalPolicy(IpcTag::CREATEEVENT, params.GetBase());
+  HANDLE handle = nullptr;
+  // Return operation status on the IPC.
+  ipc->return_info.nt_status = SyncPolicy::CreateEventAction(
+      result, *ipc->client_info, *name, event_type, initial_state, &handle);
+  ipc->return_info.handle = handle;
+  return true;
+}
+
+bool SyncDispatcher::OpenEvent(IPCInfo* ipc,
+                               std::wstring* name,
+                               uint32_t desired_access) {
+  const wchar_t* event_name = name->c_str();
+
+  CountedParameterSet<OpenEventParams> params;
+  params[OpenEventParams::NAME] = ParamPickerMake(event_name);
+  params[OpenEventParams::ACCESS] = ParamPickerMake(desired_access);
+
+  EvalResult result =
+      policy_base_->EvalPolicy(IpcTag::OPENEVENT, params.GetBase());
+  HANDLE handle = nullptr;
+  // Return operation status on the IPC.
+  ipc->return_info.nt_status = SyncPolicy::OpenEventAction(
+      result, *ipc->client_info, *name, desired_access, &handle);
+  ipc->return_info.handle = handle;
+  return true;
+}
+
+}  // namespace sandbox