1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/security/sandbox/win/src/interception_internal.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,76 @@
1.4 +// Copyright (c) 2006-2010 The Chromium Authors. All rights reserved.
1.5 +// Use of this source code is governed by a BSD-style license that can be
1.6 +// found in the LICENSE file.
1.7 +
1.8 +// Defines InterceptionManager, the class in charge of setting up interceptions
1.9 +// for the sandboxed process. For more details see:
1.10 +// http://dev.chromium.org/developers/design-documents/sandbox .
1.11 +
1.12 +#ifndef SANDBOX_SRC_INTERCEPTION_INTERNAL_H_
1.13 +#define SANDBOX_SRC_INTERCEPTION_INTERNAL_H_
1.14 +
1.15 +#include "sandbox/win/src/sandbox_types.h"
1.16 +
1.17 +namespace sandbox {
1.18 +
1.19 +const int kMaxThunkDataBytes = 64;
1.20 +
1.21 +enum InterceptorId;
1.22 +
1.23 +// The following structures contain variable size fields at the end, and will be
1.24 +// used to transfer information between two processes. In order to guarantee
1.25 +// our ability to follow the chain of structures, the alignment should be fixed,
1.26 +// hence this pragma.
1.27 +#pragma pack(push, 4)
1.28 +
1.29 +// Structures for the shared memory that contains patching information
1.30 +// for the InterceptionAgent.
1.31 +// A single interception:
1.32 +struct FunctionInfo {
1.33 + size_t record_bytes; // rounded to sizeof(size_t) bytes
1.34 + InterceptionType type;
1.35 + InterceptorId id;
1.36 + const void* interceptor_address;
1.37 + char function[1]; // placeholder for null terminated name
1.38 + // char interceptor[] // followed by the interceptor function
1.39 +};
1.40 +
1.41 +// A single dll:
1.42 +struct DllPatchInfo {
1.43 + size_t record_bytes; // rounded to sizeof(size_t) bytes
1.44 + size_t offset_to_functions;
1.45 + int num_functions;
1.46 + bool unload_module;
1.47 + wchar_t dll_name[1]; // placeholder for null terminated name
1.48 + // FunctionInfo function_info[] // followed by the functions to intercept
1.49 +};
1.50 +
1.51 +// All interceptions:
1.52 +struct SharedMemory {
1.53 + int num_intercepted_dlls;
1.54 + void* interceptor_base;
1.55 + DllPatchInfo dll_list[1]; // placeholder for the list of dlls
1.56 +};
1.57 +
1.58 +// Dummy single thunk:
1.59 +struct ThunkData {
1.60 + char data[kMaxThunkDataBytes];
1.61 +};
1.62 +
1.63 +// In-memory representation of the interceptions for a given dll:
1.64 +struct DllInterceptionData {
1.65 + size_t data_bytes;
1.66 + size_t used_bytes;
1.67 + void* base;
1.68 + int num_thunks;
1.69 +#if defined(_WIN64)
1.70 + int dummy; // Improve alignment.
1.71 +#endif
1.72 + ThunkData thunks[1];
1.73 +};
1.74 +
1.75 +#pragma pack(pop)
1.76 +
1.77 +} // namespace sandbox
1.78 +
1.79 +#endif // SANDBOX_SRC_INTERCEPTION_INTERNAL_H_
