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1 // Copyright (c) 2006-2010 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/resolver.h" | |
6 | |
7 #include <stddef.h> | |
8 | |
9 #include "base/win/pe_image.h" | |
10 #include "sandbox/win/src/sandbox_nt_util.h" | |
11 | |
12 namespace sandbox { | |
13 | |
14 NTSTATUS ResolverThunk::Init(const void* target_module, | |
15 const void* interceptor_module, | |
16 const char* target_name, | |
17 const char* interceptor_name, | |
18 const void* interceptor_entry_point, | |
19 void* thunk_storage, | |
20 size_t storage_bytes) { | |
21 if (NULL == thunk_storage || 0 == storage_bytes || | |
22 NULL == target_module || NULL == target_name) | |
23 return STATUS_INVALID_PARAMETER; | |
24 | |
25 if (storage_bytes < GetThunkSize()) | |
26 return STATUS_BUFFER_TOO_SMALL; | |
27 | |
28 NTSTATUS ret = STATUS_SUCCESS; | |
29 if (NULL == interceptor_entry_point) { | |
30 ret = ResolveInterceptor(interceptor_module, interceptor_name, | |
31 &interceptor_entry_point); | |
32 if (!NT_SUCCESS(ret)) | |
33 return ret; | |
34 } | |
35 | |
36 ret = ResolveTarget(target_module, target_name, &target_); | |
37 if (!NT_SUCCESS(ret)) | |
38 return ret; | |
39 | |
40 interceptor_ = interceptor_entry_point; | |
41 | |
42 return ret; | |
43 } | |
44 | |
45 NTSTATUS ResolverThunk::ResolveInterceptor(const void* interceptor_module, | |
46 const char* interceptor_name, | |
47 const void** address) { | |
48 DCHECK_NT(address); | |
49 if (!interceptor_module) | |
50 return STATUS_INVALID_PARAMETER; | |
51 | |
52 base::win::PEImage pe(interceptor_module); | |
53 if (!pe.VerifyMagic()) | |
54 return STATUS_INVALID_IMAGE_FORMAT; | |
55 | |
56 *address = pe.GetProcAddress(interceptor_name); | |
57 | |
58 if (!(*address)) | |
59 return STATUS_PROCEDURE_NOT_FOUND; | |
60 | |
61 return STATUS_SUCCESS; | |
62 } | |
63 | |
64 } // namespace sandbox | |
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