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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 #include "sandbox/wow_helper/service64_resolver.h" | 5 #include "sandbox/wow_helper/service64_resolver.h" |
| 6 | 6 |
| 7 #include "base/logging.h" | |
| 8 #include "base/scoped_ptr.h" | 7 #include "base/scoped_ptr.h" |
| 9 #include "sandbox/wow_helper/target_code.h" | 8 #include "sandbox/wow_helper/target_code.h" |
| 10 | 9 |
| 11 namespace { | 10 namespace { |
| 12 #pragma pack(push, 1) | 11 #pragma pack(push, 1) |
| 13 | 12 |
| 14 const BYTE kMovEax = 0xB8; | 13 const BYTE kMovEax = 0xB8; |
| 15 const BYTE kMovEdx = 0xBA; | 14 const BYTE kMovEdx = 0xBA; |
| 16 const USHORT kCallPtrEdx = 0x12FF; | 15 const USHORT kCallPtrEdx = 0x12FF; |
| 17 const BYTE kRet = 0xC2; | 16 const BYTE kRet = 0xC2; |
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| 234 // action is the same as for a target function. | 233 // action is the same as for a target function. |
| 235 return ResolveTarget(interceptor_module, interceptor_name, | 234 return ResolveTarget(interceptor_module, interceptor_name, |
| 236 const_cast<void**>(address)); | 235 const_cast<void**>(address)); |
| 237 } | 236 } |
| 238 | 237 |
| 239 // In this case all the work is done from the parent, so resolve is | 238 // In this case all the work is done from the parent, so resolve is |
| 240 // just a simple GetProcAddress. | 239 // just a simple GetProcAddress. |
| 241 NTSTATUS Service64ResolverThunk::ResolveTarget(const void* module, | 240 NTSTATUS Service64ResolverThunk::ResolveTarget(const void* module, |
| 242 const char* function_name, | 241 const char* function_name, |
| 243 void** address) { | 242 void** address) { |
| 244 DCHECK(address); | |
| 245 if (NULL == module) | 243 if (NULL == module) |
| 246 return STATUS_UNSUCCESSFUL; | 244 return STATUS_UNSUCCESSFUL; |
| 247 | 245 |
| 248 *address = ::GetProcAddress(bit_cast<HMODULE>(module), function_name); | 246 *address = ::GetProcAddress(bit_cast<HMODULE>(module), function_name); |
| 249 | 247 |
| 250 if (NULL == *address) | 248 if (NULL == *address) |
| 251 return STATUS_UNSUCCESSFUL; | 249 return STATUS_UNSUCCESSFUL; |
| 252 | 250 |
| 253 return STATUS_SUCCESS; | 251 return STATUS_SUCCESS; |
| 254 } | 252 } |
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| 338 // and now change the function to intercept, on the child | 336 // and now change the function to intercept, on the child |
| 339 if (!::WriteProtectedChildMemory(process_, target_, &local_service, | 337 if (!::WriteProtectedChildMemory(process_, target_, &local_service, |
| 340 sizeof(local_service))) | 338 sizeof(local_service))) |
| 341 return STATUS_UNSUCCESSFUL; | 339 return STATUS_UNSUCCESSFUL; |
| 342 | 340 |
| 343 return STATUS_SUCCESS; | 341 return STATUS_SUCCESS; |
| 344 } | 342 } |
| 345 | 343 |
| 346 } // namespace sandbox | 344 } // namespace sandbox |
| 347 | 345 |
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