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comparison: security/sandbox/chromium/base/win/startup_information.cc
security/sandbox/chromium/base/win/startup_information.cc
- branch
- TOR_BUG_3246
- changeset 5
- 4ab42b5ab56c
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| -1:000000000000 | 0:bdabcbe564bf |
|---|---|
| 1 // Copyright (c) 2012 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 "base/win/startup_information.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 #include "base/win/windows_version.h" | |
| 9 | |
| 10 namespace { | |
| 11 | |
| 12 typedef BOOL (WINAPI *InitializeProcThreadAttributeListFunction)( | |
| 13 LPPROC_THREAD_ATTRIBUTE_LIST attribute_list, | |
| 14 DWORD attribute_count, | |
| 15 DWORD flags, | |
| 16 PSIZE_T size); | |
| 17 static InitializeProcThreadAttributeListFunction | |
| 18 initialize_proc_thread_attribute_list; | |
| 19 | |
| 20 typedef BOOL (WINAPI *UpdateProcThreadAttributeFunction)( | |
| 21 LPPROC_THREAD_ATTRIBUTE_LIST attribute_list, | |
| 22 DWORD flags, | |
| 23 DWORD_PTR attribute, | |
| 24 PVOID value, | |
| 25 SIZE_T size, | |
| 26 PVOID previous_value, | |
| 27 PSIZE_T return_size); | |
| 28 static UpdateProcThreadAttributeFunction update_proc_thread_attribute_list; | |
| 29 | |
| 30 typedef VOID (WINAPI *DeleteProcThreadAttributeListFunction)( | |
| 31 LPPROC_THREAD_ATTRIBUTE_LIST lpAttributeList); | |
| 32 static DeleteProcThreadAttributeListFunction delete_proc_thread_attribute_list; | |
| 33 | |
| 34 } // namespace | |
| 35 | |
| 36 namespace base { | |
| 37 namespace win { | |
| 38 | |
| 39 StartupInformation::StartupInformation() { | |
| 40 memset(&startup_info_, 0, sizeof(startup_info_)); | |
| 41 | |
| 42 // Pre Windows Vista doesn't support STARTUPINFOEX. | |
| 43 if (base::win::GetVersion() < base::win::VERSION_VISTA) { | |
| 44 startup_info_.StartupInfo.cb = sizeof(STARTUPINFO); | |
| 45 return; | |
| 46 } | |
| 47 | |
| 48 startup_info_.StartupInfo.cb = sizeof(startup_info_); | |
| 49 | |
| 50 // Load the attribute API functions. | |
| 51 if (!initialize_proc_thread_attribute_list || | |
| 52 !update_proc_thread_attribute_list || | |
| 53 !delete_proc_thread_attribute_list) { | |
| 54 HMODULE module = ::GetModuleHandleW(L"kernel32.dll"); | |
| 55 initialize_proc_thread_attribute_list = | |
| 56 reinterpret_cast<InitializeProcThreadAttributeListFunction>( | |
| 57 ::GetProcAddress(module, "InitializeProcThreadAttributeList")); | |
| 58 update_proc_thread_attribute_list = | |
| 59 reinterpret_cast<UpdateProcThreadAttributeFunction>( | |
| 60 ::GetProcAddress(module, "UpdateProcThreadAttribute")); | |
| 61 delete_proc_thread_attribute_list = | |
| 62 reinterpret_cast<DeleteProcThreadAttributeListFunction>( | |
| 63 ::GetProcAddress(module, "DeleteProcThreadAttributeList")); | |
| 64 } | |
| 65 } | |
| 66 | |
| 67 StartupInformation::~StartupInformation() { | |
| 68 if (startup_info_.lpAttributeList) { | |
| 69 delete_proc_thread_attribute_list(startup_info_.lpAttributeList); | |
| 70 delete [] reinterpret_cast<BYTE*>(startup_info_.lpAttributeList); | |
| 71 } | |
| 72 } | |
| 73 | |
| 74 bool StartupInformation::InitializeProcThreadAttributeList( | |
| 75 DWORD attribute_count) { | |
| 76 if (startup_info_.StartupInfo.cb != sizeof(startup_info_) || | |
| 77 startup_info_.lpAttributeList) | |
| 78 return false; | |
| 79 | |
| 80 SIZE_T size = 0; | |
| 81 initialize_proc_thread_attribute_list(NULL, attribute_count, 0, &size); | |
| 82 if (size == 0) | |
| 83 return false; | |
| 84 | |
| 85 startup_info_.lpAttributeList = | |
| 86 reinterpret_cast<LPPROC_THREAD_ATTRIBUTE_LIST>(new BYTE[size]); | |
| 87 if (!initialize_proc_thread_attribute_list(startup_info_.lpAttributeList, | |
| 88 attribute_count, 0, &size)) { | |
| 89 delete [] reinterpret_cast<BYTE*>(startup_info_.lpAttributeList); | |
| 90 startup_info_.lpAttributeList = NULL; | |
| 91 return false; | |
| 92 } | |
| 93 | |
| 94 return true; | |
| 95 } | |
| 96 | |
| 97 bool StartupInformation::UpdateProcThreadAttribute( | |
| 98 DWORD_PTR attribute, | |
| 99 void* value, | |
| 100 size_t size) { | |
| 101 if (!startup_info_.lpAttributeList) | |
| 102 return false; | |
| 103 return !!update_proc_thread_attribute_list(startup_info_.lpAttributeList, 0, | |
| 104 attribute, value, size, NULL, NULL); | |
| 105 } | |
| 106 | |
| 107 } // namespace win | |
| 108 } // namespace base | |
| 109 |
