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1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // Wow_helper.exe is a simple Win32 64-bit executable designed to help to | 5 // Wow_helper.exe is a simple Win32 64-bit executable designed to help to |
6 // sandbox a 32 bit application running on a 64 bit OS. The basic idea is to | 6 // sandbox a 32 bit application running on a 64 bit OS. The basic idea is to |
7 // perform a 64 bit interception of the target process and notify the 32-bit | 7 // perform a 64 bit interception of the target process and notify the 32-bit |
8 // broker process whenever a DLL is being loaded. This allows the broker to | 8 // broker process whenever a DLL is being loaded. This allows the broker to |
9 // setup the interceptions (32-bit) properly on the target. | 9 // setup the interceptions (32-bit) properly on the target. |
10 | 10 |
11 #include <windows.h> | 11 #include <windows.h> |
12 | 12 |
13 #include <string> | 13 #include <string> |
14 | 14 |
15 #include "base/logging.h" | |
16 #include "sandbox/wow_helper/service64_resolver.h" | 15 #include "sandbox/wow_helper/service64_resolver.h" |
17 #include "sandbox/wow_helper/target_code.h" | 16 #include "sandbox/wow_helper/target_code.h" |
18 | 17 |
19 namespace { | 18 namespace { |
20 | 19 |
21 // Grabbed from chrome/common/string_util.h | 20 // Grabbed from chrome/common/string_util.h |
22 template <class char_type> | 21 template <class char_type> |
23 inline char_type* WriteInto( | 22 inline char_type* WriteInto( |
24 std::basic_string<char_type, std::char_traits<char_type>, | 23 std::basic_string<char_type, std::char_traits<char_type>, |
25 std::allocator<char_type> >* str, | 24 std::allocator<char_type> >* str, |
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105 if (!command_line) | 104 if (!command_line) |
106 return 1; | 105 return 1; |
107 | 106 |
108 wchar_t* next; | 107 wchar_t* next; |
109 DWORD process_id = wcstoul(command_line, &next, 0); | 108 DWORD process_id = wcstoul(command_line, &next, 0); |
110 if (!process_id) | 109 if (!process_id) |
111 return 2; | 110 return 2; |
112 | 111 |
113 DWORD access = PROCESS_VM_OPERATION | PROCESS_VM_READ | PROCESS_VM_WRITE; | 112 DWORD access = PROCESS_VM_OPERATION | PROCESS_VM_READ | PROCESS_VM_WRITE; |
114 HANDLE child = ::OpenProcess(access, FALSE, process_id); | 113 HANDLE child = ::OpenProcess(access, FALSE, process_id); |
115 DCHECK(child); | |
116 if (!child) | 114 if (!child) |
117 return 3; | 115 return 3; |
118 | 116 |
119 DWORD buffer = wcstoul(next, NULL, 0); | 117 DWORD buffer = wcstoul(next, NULL, 0); |
120 if (!buffer) | 118 if (!buffer) |
121 return 4; | 119 return 4; |
122 | 120 |
123 void* thunk = reinterpret_cast<void*>(static_cast<ULONG_PTR>(buffer)); | 121 void* thunk = reinterpret_cast<void*>(static_cast<ULONG_PTR>(buffer)); |
124 | 122 |
125 const size_t kPageSize = 4096; | 123 const size_t kPageSize = 4096; |
126 return sandbox::PatchNtdll(child, thunk, kPageSize); | 124 return sandbox::PatchNtdll(child, thunk, kPageSize); |
127 } | 125 } |
128 | 126 |
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