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1 // Copyright (c) 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 #ifndef SANDBOX_WOW_HELPER_SERVICE64_RESOLVER_H__ | |
6 #define SANDBOX_WOW_HELPER_SERVICE64_RESOLVER_H__ | |
7 | |
8 #include <stddef.h> | |
9 | |
10 #include "base/macros.h" | |
11 #include "sandbox/win/src/nt_internals.h" | |
12 #include "sandbox/win/src/resolver.h" | |
13 | |
14 namespace sandbox { | |
15 | |
16 // This is the concrete resolver used to perform service-call type functions | |
17 // inside ntdll.dll (64-bit). | |
18 class Service64ResolverThunk : public ResolverThunk { | |
19 public: | |
20 // The service resolver needs a child process to write to. | |
21 explicit Service64ResolverThunk(HANDLE process) | |
22 : process_(process), ntdll_base_(NULL) {} | |
23 virtual ~Service64ResolverThunk() {} | |
24 | |
25 // Implementation of Resolver::Setup. | |
26 virtual NTSTATUS Setup(const void* target_module, | |
27 const void* interceptor_module, | |
28 const char* target_name, | |
29 const char* interceptor_name, | |
30 const void* interceptor_entry_point, | |
31 void* thunk_storage, | |
32 size_t storage_bytes, | |
33 size_t* storage_used); | |
34 | |
35 // Implementation of Resolver::ResolveInterceptor. | |
36 virtual NTSTATUS ResolveInterceptor(const void* module, | |
37 const char* function_name, | |
38 const void** address); | |
39 | |
40 // Implementation of Resolver::ResolveTarget. | |
41 virtual NTSTATUS ResolveTarget(const void* module, | |
42 const char* function_name, | |
43 void** address); | |
44 | |
45 // Implementation of Resolver::GetThunkSize. | |
46 virtual size_t GetThunkSize() const; | |
47 | |
48 protected: | |
49 // The unit test will use this member to allow local patch on a buffer. | |
50 HMODULE ntdll_base_; | |
51 | |
52 // Handle of the child process. | |
53 HANDLE process_; | |
54 | |
55 private: | |
56 // Returns true if the code pointer by target_ corresponds to the expected | |
57 // type of function. Saves that code on the first part of the thunk pointed | |
58 // by local_thunk (should be directly accessible from the parent). | |
59 virtual bool IsFunctionAService(void* local_thunk) const; | |
60 | |
61 // Performs the actual patch of target_. | |
62 // local_thunk must be already fully initialized, and the first part must | |
63 // contain the original code. The real type of this buffer is ServiceFullThunk | |
64 // (yes, private). remote_thunk (real type ServiceFullThunk), must be | |
65 // allocated on the child, and will contain the thunk data, after this call. | |
66 // Returns the apropriate status code. | |
67 virtual NTSTATUS PerformPatch(void* local_thunk, void* remote_thunk); | |
68 | |
69 DISALLOW_COPY_AND_ASSIGN(Service64ResolverThunk); | |
70 }; | |
71 | |
72 } // namespace sandbox | |
73 | |
74 | |
75 #endif // SANDBOX_WOW_HELPER_SERVICE64_RESOLVER_H__ | |
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