Add a sandbox API for broker handle duplication

sandbox/src/handle_interception.cc

+// 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/src/handle_interception.h"
+
+#include "base/win/scoped_handle.h"

[rvargas (doing something else), 2012/03/27 00:35:33]

remove

[jschuh, 2012/03/27 01:36:19]

Done.

+#include "sandbox/src/crosscall_client.h"
+#include "sandbox/src/ipc_tags.h"
+#include "sandbox/src/sandbox_factory.h"
+#include "sandbox/src/sandbox_nt_util.h"
+#include "sandbox/src/sharedmem_ipc_client.h"
+#include "sandbox/src/target_services.h"
+
+namespace sandbox {
+
+ResultCode DuplicateHandleProxy(HANDLE source_handle,
+                                DWORD target_process_id,
+                                HANDLE* target_handle,
+                                DWORD desired_access,
+                                BOOL inherit_handle,
+                                DWORD options) {
+  if (!ValidParameter(target_handle, sizeof(HANDLE), WRITE))

[rvargas (doing something else), 2012/03/27 00:35:33]

I wouldn't worry about this... maybe just target_handle = NULL

[jschuh, 2012/03/27 01:36:19]

Done.

+    return SBOX_ERROR_BAD_PARAMS;
+
+  void* memory = GetGlobalIPCMemory();
+  if (NULL == memory)
+    return SBOX_ERROR_NO_SPACE;
+
+  SharedMemIPCClient ipc(memory);
+  CrossCallReturn answer = {0};
+  ResultCode code = CrossCall(ipc, IPC_DUPLICATEHANDLEPROXY_TAG,
+                              source_handle, target_process_id,
+                              desired_access, inherit_handle, options,
+                              &answer);
+  if (SBOX_ALL_OK != code)
+    return code;
+
+  if (answer.win32_result) {
+    ::SetLastError(answer.nt_status);
+    return SBOX_ERROR_GENERIC;
+  }
+
+  *target_handle = answer.handle;
+  return SBOX_ALL_OK;
+}
+
+}  // namespace sandbox
+