security/sandbox/win/src/interception_internal.h@b8a032363ba2 (annotated)
security/sandbox/win/src/interception_internal.h
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | // Copyright (c) 2006-2010 The Chromium Authors. All rights reserved. |
| michael@0 | 2 | // Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 3 | // found in the LICENSE file. |
| michael@0 | 4 | |
| michael@0 | 5 | // Defines InterceptionManager, the class in charge of setting up interceptions |
| michael@0 | 6 | // for the sandboxed process. For more details see: |
| michael@0 | 7 | // http://dev.chromium.org/developers/design-documents/sandbox . |
| michael@0 | 8 | |
| michael@0 | 9 | #ifndef SANDBOX_SRC_INTERCEPTION_INTERNAL_H_ |
| michael@0 | 10 | #define SANDBOX_SRC_INTERCEPTION_INTERNAL_H_ |
| michael@0 | 11 | |
| michael@0 | 12 | #include "sandbox/win/src/sandbox_types.h" |
| michael@0 | 13 | |
| michael@0 | 14 | namespace sandbox { |
| michael@0 | 15 | |
| michael@0 | 16 | const int kMaxThunkDataBytes = 64; |
| michael@0 | 17 | |
| michael@0 | 18 | enum InterceptorId; |
| michael@0 | 19 | |
| michael@0 | 20 | // The following structures contain variable size fields at the end, and will be |
| michael@0 | 21 | // used to transfer information between two processes. In order to guarantee |
| michael@0 | 22 | // our ability to follow the chain of structures, the alignment should be fixed, |
| michael@0 | 23 | // hence this pragma. |
| michael@0 | 24 | #pragma pack(push, 4) |
| michael@0 | 25 | |
| michael@0 | 26 | // Structures for the shared memory that contains patching information |
| michael@0 | 27 | // for the InterceptionAgent. |
| michael@0 | 28 | // A single interception: |
| michael@0 | 29 | struct FunctionInfo { |
| michael@0 | 30 | size_t record_bytes; // rounded to sizeof(size_t) bytes |
| michael@0 | 31 | InterceptionType type; |
| michael@0 | 32 | InterceptorId id; |
| michael@0 | 33 | const void* interceptor_address; |
| michael@0 | 34 | char function[1]; // placeholder for null terminated name |
| michael@0 | 35 | // char interceptor[] // followed by the interceptor function |
| michael@0 | 36 | }; |
| michael@0 | 37 | |
| michael@0 | 38 | // A single dll: |
| michael@0 | 39 | struct DllPatchInfo { |
| michael@0 | 40 | size_t record_bytes; // rounded to sizeof(size_t) bytes |
| michael@0 | 41 | size_t offset_to_functions; |
| michael@0 | 42 | int num_functions; |
| michael@0 | 43 | bool unload_module; |
| michael@0 | 44 | wchar_t dll_name[1]; // placeholder for null terminated name |
| michael@0 | 45 | // FunctionInfo function_info[] // followed by the functions to intercept |
| michael@0 | 46 | }; |
| michael@0 | 47 | |
| michael@0 | 48 | // All interceptions: |
| michael@0 | 49 | struct SharedMemory { |
| michael@0 | 50 | int num_intercepted_dlls; |
| michael@0 | 51 | void* interceptor_base; |
| michael@0 | 52 | DllPatchInfo dll_list[1]; // placeholder for the list of dlls |
| michael@0 | 53 | }; |
| michael@0 | 54 | |
| michael@0 | 55 | // Dummy single thunk: |
| michael@0 | 56 | struct ThunkData { |
| michael@0 | 57 | char data[kMaxThunkDataBytes]; |
| michael@0 | 58 | }; |
| michael@0 | 59 | |
| michael@0 | 60 | // In-memory representation of the interceptions for a given dll: |
| michael@0 | 61 | struct DllInterceptionData { |
| michael@0 | 62 | size_t data_bytes; |
| michael@0 | 63 | size_t used_bytes; |
| michael@0 | 64 | void* base; |
| michael@0 | 65 | int num_thunks; |
| michael@0 | 66 | #if defined(_WIN64) |
| michael@0 | 67 | int dummy; // Improve alignment. |
| michael@0 | 68 | #endif |
| michael@0 | 69 | ThunkData thunks[1]; |
| michael@0 | 70 | }; |
| michael@0 | 71 | |
| michael@0 | 72 | #pragma pack(pop) |
| michael@0 | 73 | |
| michael@0 | 74 | } // namespace sandbox |
| michael@0 | 75 | |
| michael@0 | 76 | #endif // SANDBOX_SRC_INTERCEPTION_INTERNAL_H_ |
