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comparison: security/sandbox/win/src/resolver.cc
security/sandbox/win/src/resolver.cc
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| -1:000000000000 | 0:dcb03ac858f8 |
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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 "base/win/pe_image.h" | |
| 8 #include "sandbox/win/src/sandbox_nt_util.h" | |
| 9 | |
| 10 namespace sandbox { | |
| 11 | |
| 12 NTSTATUS ResolverThunk::Init(const void* target_module, | |
| 13 const void* interceptor_module, | |
| 14 const char* target_name, | |
| 15 const char* interceptor_name, | |
| 16 const void* interceptor_entry_point, | |
| 17 void* thunk_storage, | |
| 18 size_t storage_bytes) { | |
| 19 if (NULL == thunk_storage || 0 == storage_bytes || | |
| 20 NULL == target_module || NULL == target_name) | |
| 21 return STATUS_INVALID_PARAMETER; | |
| 22 | |
| 23 if (storage_bytes < GetThunkSize()) | |
| 24 return STATUS_BUFFER_TOO_SMALL; | |
| 25 | |
| 26 NTSTATUS ret = STATUS_SUCCESS; | |
| 27 if (NULL == interceptor_entry_point) { | |
| 28 ret = ResolveInterceptor(interceptor_module, interceptor_name, | |
| 29 &interceptor_entry_point); | |
| 30 if (!NT_SUCCESS(ret)) | |
| 31 return ret; | |
| 32 } | |
| 33 | |
| 34 ret = ResolveTarget(target_module, target_name, &target_); | |
| 35 if (!NT_SUCCESS(ret)) | |
| 36 return ret; | |
| 37 | |
| 38 interceptor_ = interceptor_entry_point; | |
| 39 | |
| 40 return ret; | |
| 41 } | |
| 42 | |
| 43 NTSTATUS ResolverThunk::ResolveInterceptor(const void* interceptor_module, | |
| 44 const char* interceptor_name, | |
| 45 const void** address) { | |
| 46 DCHECK_NT(address); | |
| 47 if (!interceptor_module) | |
| 48 return STATUS_INVALID_PARAMETER; | |
| 49 | |
| 50 base::win::PEImage pe(interceptor_module); | |
| 51 if (!pe.VerifyMagic()) | |
| 52 return STATUS_INVALID_IMAGE_FORMAT; | |
| 53 | |
| 54 *address = pe.GetProcAddress(interceptor_name); | |
| 55 | |
| 56 if (!(*address)) | |
| 57 return STATUS_PROCEDURE_NOT_FOUND; | |
| 58 | |
| 59 return STATUS_SUCCESS; | |
| 60 } | |
| 61 | |
| 62 } // namespace sandbox |
