1 files changed, 93 insertions, 0 deletions
diff --git a/security/sandbox/chromium/sandbox/win/src/handle_dispatcher.cc b/security/sandbox/chromium/sandbox/win/src/handle_dispatcher.cc
new file mode 100644
index 0000000000..611e33d2a6
--- /dev/null
+++ b/security/sandbox/chromium/sandbox/win/src/handle_dispatcher.cc
@@ -0,0 +1,93 @@
+// Copyright (c) 2012 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/handle_dispatcher.h"
+
+#include <stdint.h>
+
+#include "base/win/scoped_handle.h"
+#include "sandbox/win/src/handle_interception.h"
+#include "sandbox/win/src/handle_policy.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/sandbox_nt_util.h"
+#include "sandbox/win/src/sandbox_types.h"
+#include "sandbox/win/src/sandbox_utils.h"
+
+namespace sandbox {
+
+HandleDispatcher::HandleDispatcher(PolicyBase* policy_base)
+    : policy_base_(policy_base) {
+  static const IPCCall duplicate_handle_proxy = {
+      {IpcTag::DUPLICATEHANDLEPROXY,
+       {VOIDPTR_TYPE, UINT32_TYPE, UINT32_TYPE, UINT32_TYPE}},
+      reinterpret_cast<CallbackGeneric>(
+          &HandleDispatcher::DuplicateHandleProxy)};
+
+  ipc_calls_.push_back(duplicate_handle_proxy);
+}
+
+bool HandleDispatcher::SetupService(InterceptionManager* manager,
+                                    IpcTag service) {
+  // We perform no interceptions for handles right now.
+  switch (service) {
+    case IpcTag::DUPLICATEHANDLEPROXY:
+      return true;
+
+    default:
+      return false;
+  }
+}
+
+bool HandleDispatcher::DuplicateHandleProxy(IPCInfo* ipc,
+                                            HANDLE source_handle,
+                                            uint32_t target_process_id,
+                                            uint32_t desired_access,
+                                            uint32_t options) {
+  static NtQueryObject QueryObject = NULL;
+  if (!QueryObject)
+    ResolveNTFunctionPtr("NtQueryObject", &QueryObject);
+
+  // Get a copy of the handle for use in the broker process.
+  HANDLE handle_temp;
+  if (!::DuplicateHandle(ipc->client_info->process, source_handle,
+                         ::GetCurrentProcess(), &handle_temp,
+                         0, FALSE, DUPLICATE_SAME_ACCESS | options)) {
+    ipc->return_info.win32_result = ::GetLastError();
+    return false;
+  }
+  options &= ~DUPLICATE_CLOSE_SOURCE;
+  base::win::ScopedHandle handle(handle_temp);
+
+  // Get the object type (32 characters is safe; current max is 14).
+  BYTE buffer[sizeof(OBJECT_TYPE_INFORMATION) + 32 * sizeof(wchar_t)];
+  OBJECT_TYPE_INFORMATION* type_info =
+      reinterpret_cast<OBJECT_TYPE_INFORMATION*>(buffer);
+  ULONG size = sizeof(buffer) - sizeof(wchar_t);
+  NTSTATUS error =
+      QueryObject(handle.Get(), ObjectTypeInformation, type_info, size, &size);
+  if (!NT_SUCCESS(error)) {
+    ipc->return_info.nt_status = error;
+    return false;
+  }
+  type_info->Name.Buffer[type_info->Name.Length / sizeof(wchar_t)] = L'\0';
+
+  CountedParameterSet<HandleTarget> params;
+  params[HandleTarget::NAME] = ParamPickerMake(type_info->Name.Buffer);
+  params[HandleTarget::TARGET] = ParamPickerMake(target_process_id);
+
+  EvalResult eval = policy_base_->EvalPolicy(IpcTag::DUPLICATEHANDLEPROXY,
+                                             params.GetBase());
+  ipc->return_info.win32_result =
+      HandlePolicy::DuplicateHandleProxyAction(eval, handle.Get(),
+                                               target_process_id,
+                                               &ipc->return_info.handle,
+                                               desired_access, options);
+  return true;
+}
+
+}  // namespace sandbox
+