1// Copyright 2013 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "sandbox/win/src/service_resolver.h"
6
7#include "base/win/pe_image.h"
8#include "sandbox/win/src/internal_types.h"
9#include "sandbox/win/src/sandbox_nt_util.h"
10
11namespace sandbox {
12
13NTSTATUS ServiceResolverThunk::ResolveInterceptor(
14    const void* interceptor_module,
15    const char* interceptor_name,
16    const void** address) {
17  // After all, we are using a locally mapped version of the exe, so the
18  // action is the same as for a target function.
19  return ResolveTarget(interceptor_module, interceptor_name,
20                       const_cast<void**>(address));
21}
22
23// In this case all the work is done from the parent, so resolve is
24// just a simple GetProcAddress.
25NTSTATUS ServiceResolverThunk::ResolveTarget(const void* module,
26                                             const char* function_name,
27                                             void** address) {
28  if (NULL == module)
29    return STATUS_UNSUCCESSFUL;
30
31  base::win::PEImage module_image(module);
32  *address = module_image.GetProcAddress(function_name);
33
34  if (NULL == *address) {
35    NOTREACHED_NT();
36    return STATUS_UNSUCCESSFUL;
37  }
38
39  return STATUS_SUCCESS;
40}
41
42void ServiceResolverThunk::AllowLocalPatches() {
43  ntdll_base_ = ::GetModuleHandle(kNtdllName);
44}
45
46}  // namespace sandbox
47